WO2022108176A1 - Circuit breaker and circuit breaker assembly including same - Google Patents

Abstract

Disclosed are a circuit breaker and a circuit breaker assembly including same. A circuit breaker assembly according to an embodiment of the present invention comprises a circuit breaker and a casing in which the circuit breaker is coupled and accommodated. The casing has a circuit breaker coupling unit to which the circuit breaker is slidably coupled. The circuit breaker coupling unit has a blocking plate for preventing the circuit breaker from arbitrarily moving. The circuit breaker has a movement restriction unit for preventing a random movement. The movement restriction unit includes a plurality of members which are link-coupled and elastically coupled to each other. The movement restriction unit is operated by means of only an operation of a handle unit and an operation of a connector fastening unit. Therefore, the coupling and separation of the circuit breaker and the circuit breaker assembly can only be performed by a plurality of steps of operation so as to improve the reliability and safety of the work.

Description

Circuit breaker and circuit breaker assembly comprising same

The present invention relates to a circuit breaker and a circuit breaker assembly including the same, and more particularly, to a circuit breaker having a structure capable of allowing or restricting withdrawal of a circuit breaker from a casing depending on a connection state of a control power plug, and a circuit breaker assembly including the same .

A vacuum circuit breaker is a device provided to block a circuit when an abnormal current such as an overcurrent, a short circuit, or a ground fault occurs in an extra-high voltage or high voltage distribution line.

The vacuum circuit breaker can be operated in closed state or tripped state. In the closed state, the vacuum circuit breaker is energized with an external power source or load. In the trip state, the vacuum circuit breaker is disconnected from external power or load.

The vacuum circuit breaker is used assembled in the casing. The casing is provided with a separate jack that is energably coupled to the vacuum circuit breaker. Power of the vacuum circuit breaker may be transmitted through the jack.

The vacuum interrupter may be slidably coupled to the casing. That is, after the vacuum circuit breaker is slid and coupled to the casing, the jack is coupled and operated.

At this time, the coupling state of the jack and the vacuum circuit breaker must be maintained while the vacuum circuit breaker is operating. This is due to the possibility of damage and malfunction of the vacuum circuit breaker when the coupling state is arbitrarily released.

However, the conventional vacuum circuit breaker has an interlock structure for maintaining the state of the accommodated mechanism, but does not include a separate structure for maintaining the coupled state of the jack.

Accordingly, there is a fear that the coupled jack may be arbitrarily separated from the vacuum circuit breaker according to the coupling and separation of the vacuum circuit breaker, vibration generated during the operation of the vacuum circuit breaker, or a change in the position of the vacuum circuit breaker.

In this case, the inside of the jack may be disconnected, the reliability of the control power supply may be deteriorated, and the output of the signal transmitted by the vacuum circuit breaker to the outside may also be unstable due to wiring or incomplete contact.

Korean Patent Document No. 10-1470048 discloses a pull-out device for a vacuum circuit breaker having a double locking function. Specifically, the present invention discloses a pull-out device for a vacuum circuit breaker having a structure that can automatically double lock a cross member and a rail in a state in which the truck is separated from the cross member.

However, the pull-out device of the vacuum circuit breaker having such a structure has a limitation in suggesting only a method for maintaining the coupling state between the cross member and the rail. That is, the prior literature does not disclose a consideration for a method for stably maintaining the energization state of the jack and the vacuum circuit breaker for energization with an external control power source.

Korean Patent Document No. 10-0852436 discloses a door and input interlock device of a vacuum circuit breaker. Specifically, a door and an input interlock device of a vacuum circuit breaker having a structure in which the vacuum circuit breaker is able to withdraw and withdraw only when the door is closed only at a power off position display unit is disclosed.

However, the prior literature also does not suggest a method for preventing arbitrary separation of a jack connected to an external control power supply and energization of the vacuum circuit breaker.

That is, the prior documents only suggest a method for preventing the vacuum circuit breaker from being arbitrarily separated from the rail. There is no consideration for

[Prior art literature]

[Patent Literature]

(Patent Document 1) Korean Patent Document No. 10-1470048 (2014.12.05.)

(Patent Document 2) Korean Patent Document No. 10-0852436 (2008.08.14.)

An object of the present invention is to provide a circuit breaker having a structure capable of solving the above-described problems and a circuit breaker assembly including the same.

First, an object of the present invention is to provide a circuit breaker having a structure that can prevent arbitrary movement in a state in which a member for transmitting external control power is coupled, and a circuit breaker assembly including the same.

Another object of the present invention is to provide a circuit breaker having a structure in which movement can be controlled by interlocking with a member for transmitting external control power, and a circuit breaker assembly including the same.

Another object of the present invention is to provide a circuit breaker having a structure that can prevent arbitrary movement of the circuit breaker operating in various modes, and a circuit breaker assembly including the same.

Another object of the present invention is to provide a circuit breaker having a structure in which arbitrary movement can be effectively prevented and a circuit breaker assembly including the same.

In addition, an object of the present invention is to provide a circuit breaker having a structure that is easy to be coupled to and separated from a casing, and a circuit breaker assembly including the same.

In order to achieve the above object, the present invention, a cart unit; a limiting plate movably coupled to the cart in a first direction and in a second direction opposite to the first direction; a rotation link unit rotatably coupled to the cart unit and linked to the limit plate; a vertical link portion coupled to the rotation link portion and extending in a third direction; and a connector connected to the vertical link unit and moved together with the vertical link unit in the third direction and a fourth direction opposite to the third direction, wherein the limiting plate includes the first direction and the second direction. When moving in any one of the two directions, the cart part overlaps with a blocking plate positioned outside the fourth direction in a fifth direction, and moves in the other one of the first direction and the second direction When done, the blocking plate and the circuit breaker spaced apart along the fifth direction are provided.

In addition, the blocking plate of the circuit breaker may include: a blocking extension extending in the fifth direction and formed to have a predetermined height; and a blocking protrusion continuous with the blocking extension and formed to have a height greater than that of the blocking extension, wherein the limiting plate includes a locking protrusion extending toward the blocking plate from one side facing the blocking plate And, the end in the direction in which the locking protrusion extends may be positioned higher than the height of the blocking extension, and positioned lower than the height of the blocking protrusion.

In addition, when the connector of the circuit breaker is moved in the fourth direction and the rotation link part is rotated, the blocking plate is moved in one of the first direction and the second direction to move the blocking protrusion and the engaging part. The protrusions may be disposed to overlap in the fifth direction.

In addition, the limiting plate of the circuit breaker may include: a first portion extending in the first direction and the second direction; a second portion continuous with the first portion and extending in the first direction and the second direction; and a coupling groove partially surrounded by the first part and the second part and receiving an operation handle part movably coupled to the cart part.

In addition, the rotation link portion of the circuit breaker includes a pressing pin rotatably coupled to the restriction plate, wherein the restriction plate is recessed in the outer periphery of the second part, and a pin insertion unit in which the pressing pin is accommodated. may include

In addition, the breaker may include: a frame positioned outside the cart part in the third direction to be connected to the cart part, and to which the vertical link part is movably coupled in the third direction and the fourth direction; and a lifting frame coupled to the connector and movably coupled to the frame in the third and fourth directions together with the connector.

In addition, the vertical link portion of the breaker, a head portion connected to the lifting frame; a vertical extension part connected to the head part and extending between the lifting frame and the rotation link part; and a link connection part connected to the vertical extension part and the rotation link part, respectively.

In addition, the vertical link portion of the circuit breaker may include a return spring positioned outside the head portion in the fourth direction to elastically support the head portion.

In addition, the rotation link portion of the circuit breaker, a link body extending between the vertical link portion and the limiting plate; a first link coupled to the link body and the vertical link unit, respectively; and a second link coupled to the link body and the limiting plate, respectively.

In addition, the first link of the breaker may convert the movement of the vertical link unit into rotation of the link body, and the second link may convert the rotation of the link body into movement of the limit plate.

In addition, the breaker includes a fastening member for movably coupling the restriction plate to the cart unit, the restriction plate comprising: a first portion extending in the first direction and the second direction; and a second portion continuous with the first portion and extending in the first direction and the second direction, wherein at least one of the first portion and the second portion has the first direction and the second portion A movable groove extending in two directions to which the fastening member is coupled may be formed.

In addition, the present invention, the casing is formed with a space therein; and a circuit breaker that is slidably coupled to the casing and is drawn into or withdrawn into the space, wherein the casing includes a rail portion positioned below the introduced circuit breaker and extending in the front-rear direction; and a blocking plate positioned on one side of the rail part in the width direction and extending in the front-rear direction, the height of the front end being higher than the height of the rear end, the circuit breaker being able to conduct electricity with an external control power source a connector connected to and provided to be able to ascend and descend in an up-down direction; a vertical link unit extending in the vertical direction and connected to the connector to be lifted and lowered together with the connector; a rotary link unit coupled to the vertical link unit and rotated according to the elevation of the vertical link unit; and a limiting plate positioned above the rail part and linked to the rotation link part and moved to the left or right according to the rotation of the rotation link part, wherein the limit plate protrudes toward the rail part, and the and a lower end of the blocker plate is positioned lower than the front side end and higher than the rear side end.

In addition, the circuit breaker of the circuit breaker assembly is introduced into the casing from the front side of the casing, the upper side of the rail portion, located on the front side of the rail portion, the upper side of the first groove portion open; and an operation handle portion located on the rear side of the rail portion, the second groove portion having an open upper side formed thereon, the circuit breaker extending toward the front side, and movably coupled in the vertical direction; and an insertion protrusion that is connected to the manipulation handle part, is lifted together with the manipulation handle part, and is inserted into the first groove part or the second groove part.

In addition, the circuit breaker is slidably coupled to the casing, the body portion facing the rail portion; and a lifting spring provided in the body portion to elastically support the insertion protrusion, wherein when the manipulation handle part is pressed upward, the lifting spring may store a restoring force.

According to an embodiment of the present invention, the following effects can be achieved.

First, the external control power is applied to the circuit breaker by detachably coupled to the jack (jack) connector. The connector is coupled to the elevating frame provided to be elevating. The elevating frame is coupled to a vertical link unit coupled to the cart to enable elevating in the vertical direction.

The vertical link unit is coupled to a rotation link unit that is rotatably coupled to the cart unit. The rotation link unit is coupled to a limit plate coupled to the cart unit to be movable in the left and right directions. The rotary link unit converts the vertical link unit's vertical movement into rotational movement, and then converts it to the left-right movement of the limiting plate.

A blocking plate is provided on the left or right side of the restriction plate. When the jack is connected to the connector and the components are activated, the limit plate is moved in the direction toward the blocking plate. The moved limiting plate and blocking plate overlap in the front-rear direction. In this state, the circuit breaker does not move in the direction of separation from the casing.

When the jack is disconnected from the connector and the components are operated in opposite directions, the limiting plate is moved in the opposite direction to the blocking plate. The moved limiting plate and blocking plate are spaced apart in the front-rear direction and do not overlap. In the above state, the circuit breaker may be moved in a direction to be separated from the casing.

Accordingly, the movement of the circuit breaker may be permitted or restricted depending on whether the jack is coupled to the connector. Furthermore, if a jack is connected to the connector, the breaker will not be randomly disconnected from the casing until the jack is disconnected.

As a result, malfunction and damage of the circuit breaker due to arbitrary separation of the connector and the jack can be prevented.

In addition, the casing is provided with a rail portion extending in a direction in which the circuit breaker is inserted and drawn out. A plurality of locking grooves are formed on the upper surface of the rail unit. A plurality of locking grooves are respectively formed at positions corresponding to the mode in which the circuit breaker is operated.

The circuit breaker has a lifting unit positioned to face the rail unit. The lifting unit includes an insertion protrusion that is moved in the vertical direction to be inserted into or withdrawn from any one of the plurality of locking grooves.

The lifting unit is connected to the operation handle unit. The operation handle part is provided on the circuit breaker to be movable in the vertical direction, and one end thereof is exposed to the outside of the circuit breaker.

Accordingly, the operator may position the circuit breaker to operate in a specific mode and insert the insertion protrusion into any one of the plurality of locking grooves by manipulating the operation handle.

When moving the circuit breaker, the operator manipulates the operation handle to withdraw the insertion protrusion from any one of the grooves. Accordingly, the circuit breaker may slide along the rail portion. Accordingly, the circuit breaker operating in a specific mode does not move arbitrarily.

In addition, when the circuit breaker is to be moved, the purpose can be easily achieved by withdrawing the insertion protrusion from the locking groove portion. Insertion and withdrawal of the insertion protrusion are linked with the movement of the manipulation handle part exposed to the outside. Therefore, the operator can easily control whether the circuit breaker moves by manipulating the operation handle.

In addition, the movement of the circuit breaker can be controlled in multiple stages by the above-described configuration. That is, the circuit breaker can be moved only when all conditions related to whether the insertion protrusion is inserted into the locking groove and whether the connector and the jack are coupled to each other are satisfied.

Therefore, compared to the case where the movement of the circuit breaker is restricted by a single means, work reliability can be improved. Furthermore, it is possible to improve the control convenience of the circuit breaker and prevent an accident caused by the arbitrary movement of the circuit breaker.

In addition, the rail portion on which the circuit breaker is mounted is provided with an inclined surface. The inclined surface extends toward the direction in which insertion of the circuit breaker is started, and extends downward. That is, the inclined surface guides the circuit breaker from the lower side.

Accordingly, the circuit breaker can be easily inserted into and withdrawn from the casing. Accordingly, work convenience may be improved.

1 is a perspective view showing a circuit breaker assembly according to an embodiment of the present invention.

FIG. 2 is a plan view illustrating the breaker assembly of FIG. 1 ;

FIG. 3 is a front view of the breaker assembly of FIG. 1 ;

4 is a perspective view illustrating a casing provided in the circuit breaker assembly of FIG. 1 .

Fig. 5 is a plan view showing the casing of Fig. 4;

6 is a perspective view illustrating a circuit breaker coupling unit provided in the casing of FIG. 4 .

FIG. 7 is a front view showing the circuit breaker coupling part of FIG. 6 .

8 is a left side view (a) and a right side view (b) illustrating the circuit breaker coupling portion of FIG. 6 .

9 is a plan view (a) and a bottom view (b) illustrating the circuit breaker coupling portion of FIG. 6 .

10 is a perspective view illustrating a circuit breaker provided in the circuit breaker assembly of FIG. 1 .

Fig. 11 is a plan view showing the circuit breaker of Fig. 10;

Fig. 12 is a front view showing the circuit breaker of Fig. 10;

Fig. 13 is a side view showing the circuit breaker of Fig. 10;

Fig. 14 is a bottom view showing the circuit breaker of Fig. 10;

Fig. 15 is a perspective view showing the internal configuration of the circuit breaker of Fig. 10;

16 is a perspective view illustrating a cart unit and a movement limiting unit provided in the circuit breaker of FIG. 10 .

17 is a front view illustrating a cart unit and a movement limiting unit provided in the circuit breaker of FIG. 10 .

18 is a cross-sectional view taken along line A-A' showing a cart unit and a movement limiting unit provided in the circuit breaker of FIG. 10 .

19 is a front cross-sectional view illustrating a cart unit and a movement limiting unit provided in the circuit breaker of FIG.

20 is a perspective view (a) and a front view (b) illustrating a limiting plate provided in the circuit breaker of FIG. 10 .

21 to 24 are bottom perspective views illustrating a cart unit and a movement limiting unit provided in the circuit breaker of FIG. 10 .

25 is a perspective view illustrating a state in which the circuit breaker of FIG. 10 is coupled to the casing of FIG. 4 .

26 is a perspective view illustrating a state in which arbitrary separation of the circuit breaker is prevented by the blocking plate provided in the casing of FIG. 4 and the limiting plate provided in the circuit breaker of FIG. 10 .

Hereinafter, the circuit breaker 20 and the circuit breaker assembly 1 including the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following description, in order to clarify the characteristics of the present invention, descriptions of some components may be omitted.

1. Definition of terms

The term "breaker" used in the following description means any device that is connected to a power source and a load to be energized, respectively, and can allow or cut off the conduction of the power source and the load. In one embodiment, the circuit breaker may be provided as a vacuum circuit breaker or an air circuit breaker.

The term “energized” used in the following description refers to a state in which two or more different members can receive current or electrical signals from each other. In an embodiment, the energized state may be formed in a wired manner by a conducting wire member or the like, or may be formed in a wireless manner by Wi-Fi or Bluetooth.

The term “jack” used in the following description means a member provided to connect two or more different members to be energized.

In an embodiment, the jack may be detachably coupled to a connector provided on one member and energized. The jack may be electrically connected to another member by a conducting wire member or the like.

That is, when the jack is detachably coupled to the connector, any one member including the connector and the other member to which the jack is connected by a conducting wire member may be electrically connected to each other.

In the following description, the term “spaced apart along a specific direction” refers to a state in which they are arranged so as not to overlap along the specific direction. For example, being spaced apart along the front-rear direction means that they are arranged so as not to overlap along the front-rear direction.

The terms "upper side", "lower side", "left", "right", "front side" and "rear side" used in the following description refer to FIGS. 1, 4, 6, 10, 16, and FIG. 16 and the coordinate system shown in FIGS. 21 to 26 will be understood.

2. Description of the configuration of the circuit breaker assembly 1 according to the embodiment of the present invention

1 to 3 , the circuit breaker assembly 1 according to an embodiment of the present invention includes a casing 10 and a circuit breaker 20 .

The casing 10 forms the outline of the circuit breaker assembly 1 . The circuit breaker 20 may be slidably coupled to the casing 10 . In the illustrated embodiment, the circuit breaker 20 is introduced into the casing 10 by sliding to the front side. In addition, the circuit breaker 20 is pulled out from the casing 10 by sliding to the rear side.

When the jack is detachably coupled to the circuit breaker 20 after the circuit breaker 20 slides in by a predetermined distance, arbitrary withdrawal of the circuit breaker 20 can be prevented.

In addition, in the circuit breaker assembly 1 according to the embodiment of the present invention, the jack must be coupled to the circuit breaker 20 in order to move further after the circuit breaker 20 slides in by the predetermined distance.

Furthermore, in the circuit breaker assembly 1 according to the embodiment of the present invention, when the jack coupled to the introduced circuit breaker 20 is not separated, the introduced circuit breaker 20 is not arbitrarily drawn out from the casing 10 .

Hereinafter, each configuration of the circuit breaker assembly 1 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

(1) Description of the configuration of the casing 10

4 to 9 , the circuit breaker assembly 1 according to an embodiment of the present invention includes a casing 10 .

The casing 10 forms the outline of the circuit breaker assembly 1 . A space is formed inside the casing 10 to accommodate the circuit breaker 20 . The circuit breaker 20 accommodated in the space may be electrically connected to an external control power source by the jack.

The casing 10 is preferably formed of a material having sufficient rigidity. This is to prevent damage to the accommodated circuit breaker 20 due to an external impact. In one embodiment, the casing 10 may be formed of a material such as stainless steel.

In the illustrated embodiment, the casing 10 has a rectangular cross section and has a rectangular prism shape extending in the vertical direction. The shape of the casing 10 may be changed according to the shape of the circuit breaker 20 accommodated therein or the surrounding environment in which the circuit breaker assembly 1 is installed.

In the illustrated embodiment, the casing 10 includes a base 100 , a vertical portion 200 and a circuit breaker coupling portion 300 .

The base 100 forms the lower side of the casing 10 . A vertical portion 200 and a circuit breaker coupling portion 300 are positioned on the base 100 .

The base 100 supports the circuit breaker 20 inserted into the casing 10 from the lower side. That is, the circuit breaker 20 may be slidably moved in the extension direction of the base 100 in a state in which it is seated on the base 100 , in the illustrated embodiment, in the front-rear direction.

The base 100 may have any shape capable of supporting the circuit breaker 20 from the lower side. In the illustrated embodiment, the base 100 is formed in a rectangular plate shape extending in the left-right direction and the front-rear direction.

A vertical portion 200 is positioned above the base 100 . The vertical portion 200 has its lower side coupled to the base 100 and extends upward in the direction opposite to the base 100 , in the illustrated embodiment.

The circuit breaker coupling part 300 is positioned on the upper side of the base 100 . The circuit breaker coupling part 300 may be fixedly coupled to the base 100 . The circuit breaker coupling part 300 supports the circuit breaker 20 accommodated in the casing 10 to be slidably moved in the front and rear directions.

In the illustrated embodiment, the base 100 includes a horizontal plate 110 , a support member 120 , and an accommodation space 130 .

The horizontal plate 110 forms the outer shape of the base 100 . The horizontal plate 110 is coupled with other components of the casing 10 , the vertical portion 200 and the circuit breaker coupling portion 300 in the illustrated embodiment. The horizontal plate 110 may support the components from the lower side.

The horizontal plate 110 is coupled with other components of the base 100 . In the illustrated embodiment, the horizontal plate 110 is coupled to the support member 120 and the receiving space (130).

As the name suggests, the horizontal plate 110 is provided in a plate shape. In the illustrated embodiment, the horizontal plate 110 extends in the front-rear and left-right directions, and is provided in a rectangular plate shape having a thickness in the vertical direction. The shape of the horizontal plate 110 may be changed to any shape capable of performing the above-described functions.

In any one of the extending directions of the horizontal plate 110 , each corner in the left and right directions in the illustrated embodiment is coupled to the support member 120 . In addition, the accommodating space 130 is formed on the upper side of the horizontal plate 110 in the thickness direction, and in the vertical direction in the illustrated embodiment.

The support member 120 is a portion coupled to the ground or the bottom surface of the installation location of the base 100. The support member 120 supports the horizontal plate 110 so that the horizontal plate 110 is spaced apart from the ground or the bottom surface by a predetermined distance.

The support member 120 is coupled to the horizontal plate 110 . In addition, a plurality of support members 120 may be provided. The plurality of support members 120 may be spaced apart from each other and coupled to respective corners of the horizontal plate 110 in the extending direction.

In one embodiment, the support member 120 and the horizontal plate 110 may be fastened by a screw member or the like.

In the illustrated embodiment, two support members 120 are provided, respectively, positioned at the left and right corners of the horizontal plate 110 . The support member 120 may be fixedly coupled to each corner of the horizontal plate 110 .

The plurality of support members 120 are positioned to face each other with the horizontal plate 110 interposed therebetween. In other words, the plurality of support members 120 are positioned to face each other with the accommodation space 130 , the vertical part 200 and the circuit breaker coupling part 300 interposed therebetween.

The support member 120 may be provided in any shape capable of supporting the horizontal plate 110 . In the illustrated embodiment, the support member 120 includes a first portion extending in an up-down direction and a second portion continuous with the first portion, and extending in a left-right direction parallel to the ground or the floor surface.

The support member 120 may extend in any one of the directions in which the horizontal plate 110 extends. In the illustrated embodiment, the support member 120 extends in the front-rear direction, which is the direction in which the left edge and the right edge of the horizontal plate 110 extend.

In an embodiment, an extended length of the support member 120 may be longer than an extended length of the horizontal plate 110 . Accordingly, the area in which the support member 120 comes into contact with the ground or the bottom surface is also increased, so that the support member 120 can stably support the horizontal plate 110 .

An accommodating space 130 is formed between the upper side of the horizontal plate 110 and the plurality of support members 120 .

The accommodation space 130 is a space in which the circuit breaker 20 is accommodated. The accommodation space 130 may be defined as a space formed inside the casing 10 .

The accommodation space 130 is located above the horizontal plate 110 . In addition, the accommodation space 130 may be surrounded by the horizontal plate 110 and the vertical portion 200 .

Specifically, in the illustrated embodiment, the lower side of the receiving space 130 is surrounded by the horizontal plate (110). In addition, the left and right sides of the rear of the receiving space 130 are surrounded by the first plate 210 of the vertical portion 200 , and the rear side is surrounded by the second plate 220 of the vertical portion 200 .

A portion of the accommodating space 130 surrounded by other members and a different portion are in communication with the outside. The circuit breaker 20 may enter the accommodation space 130 in any one direction among the other parts.

In the illustrated embodiment, the front side of the accommodation space 130 , the left and right sides of the front and the upper side communicate with the outside. At this time, the circuit breaker 20 may enter the accommodation space 130 through the front side of the accommodation space 130 .

In addition, the entered circuit breaker 20 is directed toward the accommodation space 130 by the circuit breaker coupling part 300 coupled to the horizontal plate 110 surrounding the lower side of the accommodation space 130 and the opposite direction, shown In the illustrated embodiment, it may be slidably moved in the front-rear direction. A detailed description thereof will be provided later.

The vertical portion 200 partially surrounds the circuit breaker 20 inserted into the casing 10 . The vertical portion 200 includes various configurations for the circuit breaker 20 to conduct electricity with an external control power source, power source, or load.

In addition, the vertical portion 200 is fixed so that the circuit breaker 20 accommodated in the accommodation space 130 does not swing randomly. The coupled state of the circuit breaker 20 and the casing 10 may be stably maintained by the vertical portion 200 .

The vertical part 200 is coupled to the base 100 . Specifically, one end of the vertical portion 200 facing the base 100, the lower end in the illustrated embodiment is coupled to the horizontal plate (110). In an embodiment, the vertical part 200 may be fixedly coupled to the base 100 .

The vertical portion 200 is positioned to be biased toward one side of the extending direction of the horizontal plate 110 . In the illustrated embodiment, the vertical portion 200 is biased toward the rear side of the horizontal plate 110 .

The vertical portion 200 may be partially surrounded by the support member 120 . In the illustrated embodiment, the left and right sides of the vertical portion 200 are partially covered by the support member 120 .

The vertical portion 200 is formed to extend upward in the direction opposite to the base 100, in the illustrated embodiment.

A space is formed inside the vertical part 200 . The space may be surrounded by the first plate 210 , the second plate 220 , and the reinforcing member 230 constituting the vertical part 200 .

One side of the space, in the illustrated embodiment the front side, is open. The coupled circuit breaker 20 may be partially accommodated in the space formed inside the vertical portion 200 .

In the illustrated embodiment, the vertical portion 200 has a quadrangular prism shape in which the front side and the upper side are open, the left and right sides are closed, and the rear side is partially open. The shape of the vertical part 200 may be changed according to the shape of the circuit breaker 20 .

In the illustrated embodiment, the vertical portion 200 includes a first plate 210 , a second plate 220 , a reinforcing member 230 , a guide rail 240 , and a guide part 250 .

The first plate 210 forms both sides of the vertical portion 200 , left and right in the illustrated embodiment.

The first plate 210 is coupled to the base 100 . Specifically, the lower side of the first plate 210 is coupled to the horizontal plate 110 and the support member 120 , respectively. For the coupling, a screw member or a rivet member may be provided.

A plurality of first plates 210 may be provided. The plurality of first plates 210 may be spaced apart from each other to form respective sides of the vertical portion 200 , respectively. In the illustrated embodiment, two first plates 210 are provided to face the space formed inside the vertical part 200 .

The first plate 210 extends in two different directions. In the illustrated embodiment, the first plate 210 is provided in a rectangular plate shape having a vertical extension length longer than a front-rear extension length and a left-right direction thickness.

The first plate 210 is connected to the second plate 220 and the reinforcing member 230 , respectively. The second plate 220 and the reinforcing member 230 may extend between the plurality of first plates 210 , and respective ends may be coupled to the plurality of first plates 210 , respectively.

The second plate 220 forms the other side of the vertical portion 200 , the rear side in the illustrated embodiment.

The second plate 220 is coupled to the first plate 210 . Specifically, the second plate 220 extends between the plurality of first plates 210 , and respective ends in the extending direction thereof are respectively coupled to the plurality of first plates 210 . In the illustrated embodiment, the second plate 220 extends in the left-right direction, so that each end in the left-right direction is coupled to the first plate 210 , respectively.

The rigidity of the vertical portion 200 may be reinforced by the second plate 220 .

The reinforcing member 230 forms the other side of the vertical portion 200 , the front side in the illustrated embodiment.

The reinforcing member 230 is disposed to partially cover the front side of the vertical portion 200 . That is, the width of the reinforcing member 230 is shorter than the vertical extension length of the first plate 210 .

The reinforcing member 230 is coupled to the first plate 210 . Specifically, the reinforcing member 230 extends between the plurality of first plates 210 , and respective ends in the extending direction thereof are respectively coupled to the plurality of first plates 210 . In the illustrated embodiment, the reinforcing member 230 extends in the left and right directions, and each end of the reinforcing member 230 in the left and right directions is coupled to the first plate 210 , respectively.

Accordingly, the rigidity of the vertical portion 200 in the front-rear direction and the vertical direction may be reinforced by the second plate 220 and the reinforcing member 230 .

The guide rail 240 guides the sliding movement of the circuit breaker 20 accommodated in the casing 10 . By the guide rail 240 , the circuit breaker 20 may slide along a preset path in a direction toward the vertical portion 200 or in a direction opposite to that, in the illustrated embodiment, in the front-rear direction.

The guide rail 240 is formed to extend in the direction in which the circuit breaker 20 will slide, in the illustrated embodiment, in the front-rear direction. One end of the guide rail 240 in the extending direction, the front end in the illustrated embodiment may be located biased toward the front side of the horizontal plate (110). The other end in the extension direction of the guide rail 240 , the rear end in the illustrated embodiment may be positioned to be biased toward the rear side of the horizontal plate 110 .

A plurality of guide rails 240 may be formed. A plurality of guide rails 240 are spaced apart from each other. The plurality of guide rails 240 may slidably support the circuit breaker 20 at different positions.

In the illustrated embodiment, two guide rails 240 are provided, including a first guide rail 241 and a second guide rail 242 . The first guide rail 241 slidably supports the circuit breaker 20 on the left side. The second guide rail 242 slidably supports the circuit breaker 20 from the right side.

In the illustrated embodiment, the guide rail 240 is formed with a space extending in its extension direction, that is, in the front-rear direction. The wheel part 720 provided in the cart part 700 of the circuit breaker 20 is rotatably accommodated in the space. The wheel part 720 may be rotated in a direction in which the guide rail 240 extends, that is, in a front-rear direction, while being accommodated in the space.

The height of the space, that is, the length in the vertical direction may be determined according to the diameter of the wheel part 720 .

The guide unit 250 guides the circuit breaker 20 coupled to the casing 10 so that it can slide to an accurate position in the width direction, and in the left and right directions in the illustrated embodiment.

The guide part 250 is coupled to the base 100 . Specifically, the guide unit 250 is coupled to the upper side of the horizontal plate (110).

The guide unit 250 extends in the direction in which the guide rail 240 extends, in the illustrated embodiment, in the front-rear direction. It will be understood that the extension direction of the guide part 250 is the same as the direction in which the circuit breaker 20 slides.

In this case, the extension length of the guide part 250 may be shorter than the extension length of the guide rail 240 . In addition, the guide part 250 may be positioned to overlap the guide rail 240 in the left and right directions.

In other words, the front end of the guide part 250 may be located at the rear end of the guide rail 240 than the front end. In addition, the rear end of the guide part 250 may be located on the front side than the rear end of the guide rail 240 .

The guide part 250 is positioned between the plurality of guide rails 240 . In the illustrated embodiment, the guide part 250 is positioned between the first guide rail 241 on the left and the second guide rail 242 on the right. In an embodiment, the distance between the guide part 250 and each of the guide rails 241 and 242 may be the same.

The insertion guide part 730 provided in the cart part 700 of the circuit breaker 20 is located above the guide part 250 . In other words, the guide part 250 is disposed to overlap the insertion guide part 730 in the vertical direction.

The circuit breaker coupling part 300 is positioned adjacent to the guide part 250 .

The circuit breaker coupling part 300 is a part to which the circuit breaker 20 accommodated in the casing 10 is slidably coupled. The circuit breaker 20 may slide forward and backward in the illustrated embodiment in a state coupled to the circuit breaker coupling part 300 .

The circuit breaker coupling part 300 is positioned between the plurality of guide rails 240 . In the illustrated embodiment, the circuit breaker coupling part 300 is positioned between the first guide rail 241 positioned on the left and the second guide rail 242 positioned on the right.

In addition, the circuit breaker coupling part 300 is positioned adjacent to the guide part 250 . In the illustrated embodiment, the circuit breaker coupling part 300 is positioned between the first guide rail 241 and the guide part 250 positioned on the left.

The circuit breaker coupling unit 300 is formed to extend in the direction in which the guide rail 240 extends, in the illustrated embodiment, in the front-rear direction. In this case, the extension length of the circuit breaker coupling part 300 may be shorter than the extension length of the guide rail 240 .

The circuit breaker coupling part 300 is coupled to the base 100 . Specifically, the circuit breaker coupling part 300 is coupled to the horizontal plate 110 of the base 100 . In one embodiment, the circuit breaker coupling unit 300 may be fixedly coupled to the horizontal plate 110 by a separate fastening member.

The circuit breaker coupling part 300 may limit the sliding movement of the circuit breaker 20 . Specifically, after the circuit breaker 20 is slid by a predetermined distance in the direction to be coupled to the casing 10, the circuit breaker coupling part 300 restricts the circuit breaker 20 from being further moved unless additional manipulation is involved. .

When the additional operation is performed, the circuit breaker coupling part 300 allows the additional sliding movement of the circuit breaker 20 . Accordingly, the circuit breaker 20 can be moved to a position where it can be operated.

To this end, the circuit breaker coupling part 300 may be in contact with or spaced apart from the movement limiting part 800 provided in the circuit breaker 20 . The contact or separation is achieved by manipulating the cart 700 while the circuit breaker 20 slides along the circuit breaker coupling portion 300 . A detailed description thereof will be provided later.

6 to 9 , the circuit breaker coupling part 300 includes a rail part 310 , an inclined surface 320 , a locking groove part 330 , and a blocking plate 340 .

The rail part 310 forms the body of the circuit breaker coupling part 300 . The rail unit 310 is formed to extend in the direction in which the guide rail 240 extends, in the illustrated embodiment, in the front-rear direction. The circuit breaker 20 may slide along the rail portion 310 in a direction toward the vertical portion 200 or in a direction opposite to that, in the illustrated embodiment, in the front-rear direction.

It will be understood that the extension length of the circuit breaker coupling part 300 may be determined according to the length of the rail part 310 extending therefrom.

In the illustrated embodiment, the rail part 310 includes an upper surface 311 and a side surface 312 .

The upper surface 311 forms one side opposite to the horizontal plate 110 among each side surface of the rail part 310, and in the illustrated embodiment, the upper surface is formed. The upper surface 311 covers the space formed inside the rail part 310 from the upper side.

The upper surface 311 is formed to extend in the direction in which the guide rail 240 extends, in the illustrated embodiment, in the front-rear direction. In addition, the upper surface 311 has a width in a direction facing each of the plurality of guide rails 240, in the left-right direction in the illustrated embodiment.

That is, in the illustrated embodiment, the upper surface 311 is provided in the form of a rectangular plate having a length in the front-rear direction is longer than an extension length in the left-right direction and a thickness in the vertical direction. The shape of the upper surface 311 may be changed according to the shape of the circuit breaker coupling part 300 .

A locking groove 330 is formed on the upper surface 311 . The insertion protrusion 815 penetrating through the guide bracket 814 of the movement limiting part 800 is inserted into or drawn out from the locking groove part 330 . Accordingly, the sliding movement of the circuit breaker 20 may be restricted or allowed.

In the above embodiment, a plurality of locking grooves 330 may be formed. That is, in the illustrated embodiment, a first groove portion 331 is formed at the front end of the upper surface 311 . In addition, a second groove portion 332 is formed through and adjacent to the rear end of the upper surface 311 .

The insertion protrusion 815 of the movement limiting part 800 is inserted in each of the grooves 331 and 332 to be withdrawn. Accordingly, the circuit breaker 20 can be maintained in a test position or a service position. A detailed description thereof will be provided later.

The upper surface 311 may be located at a predetermined height. In the illustrated embodiment, the height of the upper surface 311 may be defined as the second height h2. The second height h2 may be defined as a vertical distance between a portion where the base 100 or the side surface 312 is coupled to the base 100 and an upper end of the upper surface 311 .

In this case, the second height h2 may be formed to be higher than the first height h1, which is the maximum height of the inclined surface 320 . That is, the height in the vertical direction of the upper surface 311 is higher than the height in the vertical direction of the flat portion of the inclined surface 320 . In an embodiment, the second height h2 may be higher than the first height h1 by 2 mm.

Accordingly, as will be described later, the length at which the manipulation handle part 740 must be moved upward in order for the insertion protrusion 815 to be withdrawn from the first groove part 331 is determined by the length of the insertion protrusion 815 being the second groove part 332 . It is shorter than the length at which the manipulation handle part 740 has to be moved upward in order to be withdrawn from the .

As a result, the circuit breaker 20 may be separated from the casing 10 in a state in which the jack (not shown) is separated from the connector 410 so that the limiting plate 820 does not contact the blocking plate 340 . A detailed description thereof will be provided later.

Each edge of the width direction of the upper surface 311, the left edge and the right edge in the illustrated embodiment, the side 312 is formed to extend. In addition, an inclined surface 320 is provided at one edge in the longitudinal direction of the upper surface 311 , a front side edge in the illustrated embodiment.

The side surface 312 forms the other side of each side of the rail unit 310 , left and right sides in the illustrated embodiment. The side surface 312 covers the space formed inside the rail part 310 from the left and right sides.

The side surface 312 is formed to extend in the direction in which the guide rail 240 extends, in the illustrated embodiment, in the front-rear direction. In addition, the side surface 312 has a width in a direction facing the horizontal plate 110 and a direction opposite thereto, in the vertical direction in the illustrated embodiment.

That is, in the illustrated embodiment, the side surface 312 is provided in a rectangular plate shape having a length in the front-rear direction is longer than an extension length in the vertical direction and a width in the left-right direction. The shape of the side surface 312 may be changed according to the shape of the circuit breaker coupling part 300 .

The side surface 312 is continuous with the upper surface 311 . The side surface 312 forms a predetermined angle with the upper surface 311 and may extend in a direction opposite to the upper surface 311, downward in the illustrated embodiment. In an embodiment, the predetermined angle may be a right angle.

The side 312 is coupled to the horizontal plate 110 . Specifically, the side 312 may be coupled to the horizontal plate 110 on one side opposite to the upper surface 311 , and the lower side in the illustrated embodiment. The side surface 312 may be coupled to the horizontal plate 110 at a predetermined angle. In an embodiment, the predetermined angle may be a right angle.

A plurality of side surfaces 312 may be provided. In the illustrated embodiment, two side surfaces 312 are provided so as to be spaced apart from each other in the thickness direction, that is, in the left-right direction.

A blocking plate 340 may be coupled to the outside of any one of the side surfaces 312 among the plurality of side surfaces 312 . In the illustrated embodiment, the blocking plate 340 is coupled to the side 312 located on the right side. In this embodiment, the blocking plate 340 is located adjacent to the front side end of the side 312 located on the right side.

The inclined surface 320 guides the circuit breaker 20 coupled to the casing 10 from the lower side. The circuit breaker 20 slides along the inclined surface 320 and can be easily entered into the rail unit 310 .

Specifically, the insertion protrusion 815 of the movement limiter 800 is seated on the inclined surface 320 and can be moved in the front-rear direction. At this time, the inclined surface 320 and the insertion protrusion 815 may be maintained in a contact state. In addition, as will be described later, the insertion protrusion 815 is elastically supported by the elevating spring 816 .

Accordingly, the insertion protrusion 815 may be moved toward the rear side while in contact with the inclined surface 320 while pressing the elevating spring 816 . In addition, when the circuit breaker 20 is moved to the front side, the insertion protrusion 815 is pressed downward (ie, in the direction toward the inclined surface 320 ) by the lifting spring 816 and is moved downward.

That is, the insertion protrusion 815 is maintained in contact with the inclined surface 320 and may be moved in the front-rear direction.

The inclined surface 320 is spaced apart from the upper surface 311 of the rail part 310 . In the illustrated embodiment, the inclined surface 320 is spaced apart from one end of the extending direction of the upper surface 311, that is, the front end. An opening in which the inclined surface 320 and the one end of the upper surface 311 are spaced apart from each other may be defined as a first groove portion 331 .

The inclined surface 320 is continuous with the side surface 312 of the rail unit 310 . In one embodiment, the end of the inclined surface 320 in the width direction, each end in the left and right direction in the illustrated embodiment may be coupled to the side 312, respectively.

In other words, the inclined surface 320 is positioned between the plurality of side surfaces 312 and is respectively coupled to the plurality of side surfaces 312 .

The inclined surface 320 is formed to extend obliquely toward the horizontal plate 110 . Specifically, the inclined surface 320 is formed to extend from the front end of the upper surface 311, inclined downward toward the front side.

In other words, the inclined surface 320 extends at a predetermined angle with the upper surface 311 . In an embodiment, the predetermined angle may be an obtuse angle.

Accordingly, the inclined surface 320 is formed so that the height of the front side in the illustrated embodiment (ie, the distance from the horizontal plate 110) is lower than the height of the rear side in one side of the extension direction.

Accordingly, the insertion protrusion 815 moved in contact with the inclined surface 320 increases in height toward the direction in which the circuit breaker 20 is coupled to the casing 10 (ie, the rear side).

In addition, it will be understood that the height of the insertion protrusion 815 decreases in the direction in which the circuit breaker 20 is separated from the casing 10 (ie, the front side).

The inclined surface 320 is formed to extend in the same direction as the upper surface 311, in the front-rear direction in the illustrated embodiment, and is provided in a rectangular plate shape having a width in the left-right direction. The shape of the inclined surface 320 may be changed to any shape capable of guiding the insertion protrusion 815 of the circuit breaker 20 from the lower side.

The insertion protrusion 815 of the circuit breaker 20 is inserted or withdrawn into the locking groove portion 330 . The insertion protrusion 815 inserted into the locking groove 330 is not arbitrarily drawn out unless an external force is applied.

Accordingly, the circuit breaker 20 may be maintained at a position where the insertion protrusion 815 is inserted into the locking groove portion 330 . As a result, any movement of the circuit breaker 20 is prevented, so that the operational reliability and service life of the circuit breaker assembly 1 can be improved.

Insertion of the insertion protrusion 815 may be achieved by the restoring force stored by the lifting spring 816 being pressed. In addition, withdrawal of the insertion protrusion 815 may be achieved by manipulating the operation handle unit 740 provided in the cart unit 700 . A detailed description thereof will be provided later.

The locking groove part 330 is located on one side of the rail part 310 opposite to the base 100, and on the upper side in the illustrated embodiment. The one side of the locking groove part 330, the upper side in the illustrated embodiment, is formed to be open, and communicates with the space formed inside the rail part 310 .

In an embodiment in which a separate space is not formed inside the rail part 310 , the locking groove part 330 may be recessed in the upper surface 311 .

In the illustrated embodiment, the locking groove 330 has a rectangular shape extending in the front-rear direction and the left-right direction. In addition, the locking groove portion 330 is depressed by a predetermined depth in the direction toward the horizontal plate 110, toward the lower side in the illustrated embodiment.

The shape of the locking groove 330 may be any shape into which the insertion protrusion 815 can be inserted and withdrawn.

A plurality of locking grooves 330 may be provided. The plurality of locking grooves 330 may be positioned to be spaced apart from each other in the direction in which the upper surface 311 extends, and in the front-rear direction in the illustrated embodiment.

In the illustrated embodiment, the locking groove portion 330 is provided with two including the first groove portion 331 and the second groove portion 332 . The first groove portion 331 is relatively positioned on the front side compared to the second groove portion 332 .

Accordingly, it will be understood that as the circuit breaker 20 coupled to the rail part 310 moves toward the vertical part 200 , the insertion protrusion 815 may be inserted into the first groove part 331 first.

Meanwhile, as the circuit breaker 20 is moved, the insertion protrusion 815 may be positioned at at least four different points.

Specifically, as the insertion of the circuit breaker 20 is started, the insertion protrusion 815 may be positioned between the inclined surface 320 and the first groove 331 . Also, when the circuit breaker 20 moves, the insertion protrusion 815 may be inserted into the first groove portion 331 .

The insertion protrusion 815 drawn out from the first groove portion 331 after the manipulation process is performed may be positioned between the first groove portion 331 and the second groove portion 332 according to the movement of the circuit breaker 20 . Furthermore, when the movement of the circuit breaker 20 further proceeds, the insertion protrusion 815 may be inserted into the second groove portion 332 .

At this time, at a position where the insertion protrusion 815 is inserted into the first groove portion 331 , the circuit breaker 20 may be operated in a test mode. Accordingly, the position at which the insertion protrusion 815 is inserted into the first groove portion 331 may be defined as a test position.

In addition, at a position where the insertion protrusion 815 is inserted into the second groove portion 332 , the circuit breaker 20 may be operated in a service mode. Accordingly, the position at which the insertion protrusion 815 is inserted into the second groove portion 332 may be defined as a service position.

In particular, the circuit breaker 20 according to an embodiment of the present invention can prevent arbitrary separation of the coupled jack when the insertion protrusion 815 is moved between the first groove portion 331 and the second groove portion 332 . have. This is achieved by the movement limiter 800 to be described later, a detailed description thereof will be described later.

The blocking plate 340 constrains the circuit breaker 20 to be movable in a direction drawn out from the casing 10 only after a predetermined operation process. Specifically, the blocking plate 340 is in contact with or spaced apart from the limiting plate 820 of the movement limiting unit 800 by the predetermined manipulation process.

When the blocking plate 340 and the limiting plate 820 are in contact with each other, the circuit breaker 20 is not moved in the direction in which it is drawn out from the casing 10 , that is, the front side in the illustrated embodiment.

In addition, when the blocking plate 340 is spaced apart from the limiting plate 820 , the circuit breaker 20 may be moved to the front side to be withdrawn from the casing 10 .

The contact and separation of the blocking plate 340 and the limiting plate 820 may be achieved by manipulating the operation handle portion 740 , the rotary link portion 850 , and the vertical link portion 860 of the cart portion 700 . A detailed description thereof will be provided later.

The blocking plate 340 extends in the same direction as the rail unit 310 , in the front-rear direction in the illustrated embodiment. The blocking plate 340 may be provided in the form of a plate extending in the extending direction, that is, in the front-rear direction, having a width in the vertical direction, and having a thickness in the left-right direction.

That is, the blocking plate 340 may be formed in a plate shape similar to the side surface 312 of the rail unit 310 .

The blocking plate 340 is positioned adjacent to the rail unit 310 . Also, the blocking plate 340 may be positioned between the rail part 310 and the guide part 250 .

In the illustrated embodiment, the blocking plate 340 is coupled to the side surface 312 positioned in the direction (ie, the right side) toward the guide unit 250 among the side surfaces 312 of the rail unit 310 . The position of the blocking plate 340 may be changed according to the position of the restriction plate 820 of the movement limiter 800 .

In the illustrated embodiment, the blocking plate 340 includes a blocking extension 341 and a blocking projection 342 .

The blocking extension 341 forms the body of the blocking plate 340 . The blocking extension part 341 is formed to extend in the direction in which the rail part 310 extends, in the illustrated embodiment, in the front-rear direction.

The extension length of the blocking extension part 341 may be the same as the extension length of the side surface 312 of the rail part 310 .

The blocking extension 341 is formed to have a predetermined height, that is, a length in the vertical direction in the illustrated embodiment. A height of the blocking extension 341 may be defined as a first length l1 .

In this case, the first length l1 of the blocking extension part 341 may be shorter than the first height h1 of the rail part 310 . Also, the first length l1 of the blocking extension 341 may be shorter than the second length l2 of the blocking protrusion 342 .

In other words, the height of the upper end of the blocking extension 341 is formed to be lower than the height of the upper end of the blocking protrusion 342 .

Accordingly, the blocking extension 341 is positioned below the locking protrusion 828 of the limiting plate 820 and spaced apart from the limiting plate 820 . As will be described later, the locking protrusion 828 is located at the lowermost side of the limiting plate 820 . Accordingly, it will be appreciated that the blocking extension 341 does not contact the limiting plate 820 .

That is, the movement of the circuit breaker 20 may be limited by the contact between the blocking projection 342 and the locking projection 828 .

The blocking protrusion 342 is in contact with or spaced apart from the restriction plate 820 to allow or limit the sliding movement of the restriction plate 820 and the blocker 20 included therein. Specifically, the blocking protrusion 342 restricts the direction in which the circuit breaker 20 is drawn out from the casing 10 , which is moved toward the front side in the illustrated embodiment.

The blocking protrusion 342 is located at one end in the direction in which the blocking extension 341 extends. In the illustrated embodiment, the blocking projection 342 is located at the front side end of the blocking extension 341 . The blocking projection 342 is continuous with the end of the blocking extension 341 .

The blocking protrusion 342 may extend in the direction in which the blocking extension 341 extends, in the illustrated embodiment, in the front-rear direction. In addition, the blocking protrusion 342 is formed to have a predetermined height, and a length in the vertical direction in the illustrated embodiment. A height of the blocking protrusion 342 may be defined as a second length l2 .

In this case, the second length l2 of the blocking protrusion 342 may be less than or equal to the first height h1 of the rail unit 310 . Also, the second length l2 of the blocking protrusion 342 may be longer than the first length l1 of the blocking extension 341 .

In other words, the height of the upper end of the blocking protrusion 342 is formed to be higher than the height of the upper end of the blocking extension 341 .

Accordingly, when the limiter plate 820 is moved to the front side in the illustrated embodiment in the direction in which the circuit breaker 20 is withdrawn from the casing 10 in a state where the limiting plate 820 is disposed at a specific position, the locking protrusion 828 of the limiting plate 820 is is in contact with the blocking protrusion 342 . Accordingly, the movement of the circuit breaker 20 may be restricted.

As will be described later, the movement of the blocking plate 340 is interlocked with the operation of the mechanism structure 400 and the movement limiter 800 . That is, the movement of the blocking plate 340 is operated in communication with whether the jack is coupled to the connector 410 . As a result, whether or not the circuit breaker 20 is drawn out depends on whether the connector 410 and the jack are coupled.

As will be described later, in a state in which the jack is coupled to the connector 410 , the blocking plate 340 is disposed at a position in contact with the limiting plate 820 . Accordingly, in a state in which the jack is coupled to the connector 410 , the circuit breaker 20 is not arbitrarily separated from the casing 10 .

As a result, the operational reliability of the circuit breaker 20 can be improved, and the working stability can be improved. A detailed description of the specific process in which the slide movement of the circuit breaker 20 is restricted and allowed will be described later.

(2) Description of the configuration of the circuit breaker 20

10 to 24 , the circuit breaker assembly 1 according to the embodiment of the present invention includes a circuit breaker 20 .

The circuit breaker 20 is electrically connected to an external control power source, power source, or load. The circuit breaker 20 may be operated by an external control power source to allow or cut off current between the power source and the load.

Accordingly, malfunction and damage to the load connected to the circuit breaker 20 to be energized can be prevented.

The circuit breaker 20 is accommodated in the casing 10 . Specifically, the circuit breaker 20 is accommodated in the receiving space 130 of the base 100 . The circuit breaker 20 accommodated inside the casing 10 may be partially surrounded by the vertical portion 200 .

The circuit breaker 20 is electrically connected to an external control power source by the jack.

The circuit breaker 20 may be slidably moved from the inside of the casing 10 toward the vertical portion 200 or in a direction opposite to the vertical portion 200 . That is, the circuit breaker 20 may be moved to the front side or the rear side in the illustrated embodiment.

To this end, the circuit breaker 20 is slidably connected to the guide rail 240 , the guide part 250 , and the circuit breaker coupling part 300 , respectively.

In addition, the breaker 20 according to an embodiment of the present invention may be allowed or limited in sliding movement depending on whether the jack is coupled. Accordingly, arbitrary separation of the jack coupled to the circuit breaker 20 can be prevented, thereby preventing the circuit breaker 20 and the load from being burned out.

In the illustrated embodiment, the circuit breaker 20 has a rectangular cross section and has a rectangular prism shape having a predetermined height. The shape of the circuit breaker 20 may be changed according to the shape of the casing 10 and the surrounding environment in which the circuit breaker assembly 1 is to be provided.

A part of the outer shape of the circuit breaker 20 may be formed by a housing (not shown). The housing (not shown) may be formed of an insulating material. This is to prevent the circuit breaker 20 from being arbitrarily energized with an external control power source, power source, or load.

In the illustrated embodiment, the circuit breaker 20 includes a mechanism structure 400 , a blocking portion 500 , a terminal portion 600 , a cart portion 700 , and a movement limiting portion 800 .

Hereinafter, each configuration of the circuit breaker 20 will be described in detail with reference to the accompanying drawings, but the cart unit 700 and the movement limiting unit 800 will be described as separate clauses.

The mechanism structure 400 is operated by an external control power source to operate the circuit breaker 20 in a closed state or a trip state.

The mechanism structure 400 is electrically connected to an external control power source. The connection may be achieved by detachably coupling the jack to a connector 410 to be described later.

The mechanism structure 400 is accommodated in the housing (not shown) of the circuit breaker 20 .

In this case, some components of the mechanism structure 400 may be partially exposed to the outside of the housing (not shown). In the illustrated embodiment, the connector 410 is exposed on the upper side of the housing (not shown), so that the jack can be detachably coupled.

In the illustrated embodiment, the mechanism structure 400 includes a connector 410 , a connector fastening portion 420 , a frame 430 , a mechanism 440 , and a lifting frame 450 .

The connector 410 is a part in which the mechanism 440 of the mechanism structure 400 is electrically connected to an external control power source. Through the connector 410 , a control signal for actuating the mechanism 440 may be input.

The jack is detachably coupled to the connector 410 . At this time, when the jack is coupled or separated, the connector fastening part 420 provided on the outside of the connector 410 and the lifting frame 450 connected thereto are operated.

The movement limiter 800 is operated so that the circuit breaker 20 can slide in a direction toward the vertical portion 200 or in a direction opposite to the vertical portion 200 in conjunction with the operation. A detailed description thereof will be provided later.

The connector 410 is located on one side of the mechanism structure 400 opposite the base 100 , in the illustrated embodiment, on the upper side. The connector 410 may be exposed above the housing (not shown) and the frame 430 . The connector 410 is through-coupled to the opening formed through the horizontal frame 431 .

The connector 410 is coupled to the lifting frame 450 . The connector 410 may be lifted up and down together with the elevating frame 450 according to whether the jack is coupled or not.

The connector 410 is coupled through the frame 430 . Specifically, the connector 410 is coupled through the opening formed through the horizontal frame 431 of the frame 430 .

A connector fastening part 420 is provided on the outside of the connector 410 .

The connector fastening part 420 maintains coupling between the connector 410 and the jack. When the connector 410 and the jack are coupled, the connector 410 and the jack are not arbitrarily separated unless the connector fastening part 420 is operated separately.

The connector fastening part 420 is located outside the connector 410 . In the illustrated embodiment, the connector fastening part 420 is located on the upper side of the mechanism structure 400 , and is positioned to surround the front side, the rear side, the left and the right side of the connector 410 .

The connector fastening part 420 is coupled through the frame 430 . Specifically, the connector fastening part 420 is coupled through the opening formed through the horizontal frame 431 of the frame 430 .

The connector fastening part 420 is connected to the lifting frame 450 . The connector fastening part 420 may be raised and lowered together with the elevating frame 450 .

When the jack is coupled to the connector 410 , the connector fastening part 420 presses the lifting frame 450 . Accordingly, the vertical link unit 860 of the movement limiter 800 connected to the lifting frame 450 and the limiting plate 820 connected thereto may be moved.

When the connector 410 and the jack are separated, the connector fastening part 420 is raised together with the lifting frame 450 . Accordingly, the vertical link unit 860 of the movement limiter 800 connected to the lifting frame 450 and the limiting plate 820 connected thereto may be moved.

At this time, it will be understood that the moving directions of the vertical link unit 860 and the limiting plate 820 in each case will be opposite to each other.

As a result, depending on whether the connector 410 is coupled or not, the limiting plate 820 and the blocking plate 340 are in contact to limit the withdrawal of the circuit breaker 20, or the limiting plate 820 and the blocking plate 340 are spaced apart. Withdrawal of the circuit breaker 20 may be permitted.

The connector fastening part 420 may be exposed to the upper side of the housing (not shown) and the frame 430 . The connector fastening part 420 is through-coupled to the opening formed through the horizontal frame 431 .

In the illustrated embodiment, the connector fastening part 420 includes a side plate 421 and a locking bar 422 .

The side plates 421 are located on both sides of the connector 410, respectively, in the left and right directions in the illustrated embodiment. The side plate 421 movably supports the locking bar 422 .

A plurality of side plates 421 may be provided. The plurality of side plates 421 may be spaced apart from each other and disposed to face each other. In the illustrated embodiment, two side plates 421 are provided, respectively, disposed on the left and right sides with the connector 410 therebetween.

The side plate 421 is coupled to the lifting frame 450 . The side plate 421 may be lifted up and down together with the elevating frame 450 .

The side plate 421 is coupled through the horizontal frame 431 . Specifically, the side plate 421 is through-coupled to the opening formed through the horizontal frame 431 .

In the illustrated embodiment, the side plate 421 is formed in a plate shape in which an extension length in the vertical direction is longer than an extension length in the front-rear direction. The shape of the side plate 421 may be any shape capable of slidably supporting the locking bar 422 .

A fastening hole 421a is provided in the side plate 421 .

A locking bar 422 is movably inserted and coupled to the fastening hole 421a. That is, the locking bar 422 is coupled to the side plate 421 to be slidably movable along the fastening hole 421a.

The fastening hole 421a may extend in a direction in which the locking bar 422 is rotated. In the illustrated embodiment, the fastening hole 421a is formed in a circular arc shape with its center located at the lower side.

Accordingly, the engaging bar 422 coupled thereto may also be rotated clockwise or counterclockwise by the arc shape.

The locking bar 422 is movably coupled to the side plate 421 to restrain or release the jack coupled to the connector 410 .

The locking bar 422 may be divided into a plurality of parts. That is, the locking bar 422 may be divided into a first part operated by an operator and a second part connected to each end of the first part and slidably coupled to the fastening hole 421a.

The second part may be formed in a direction opposite to the frame 430 , and an upper end thereof in the illustrated embodiment may be formed in a hook shape. Accordingly, the jack coupled to the connector 410 may be constrained by the hook shape, so that the coupled state with the connector 410 may be stably maintained.

The first portion forms a front side of the locking bar 422 , and extends in a direction in which a plurality of side plates 421 are spaced apart from each other, in the left-right direction in the illustrated embodiment. The second part is located at an end in each direction in which the first part extends, in the illustrated embodiment at each end of the left and right sides. The second part is slidably coupled to each of the plurality of side plates 421 .

In this case, each end of the first part and the second part may be link-coupled to each other. Accordingly, the rotation direction of the first part and the rotation direction of the second part may be opposite to each other.

In addition, each end of the first part and the second part may be elastically coupled by an elastic member (not shown). The elastic member (not shown) may provide a restoring force so that the locking bar 422 is maintained at a position that restrains the jack.

That is, in the embodiment illustrated in FIG. 10 , the first portion of the locking bar 422 is pressed downward, and the second part of the locking bar 422 is rotated to the rear side. In the above state, the elastic member (not shown) is pressed and stores a restoring force.

Also, in the embodiment shown in FIG. 10 , since the hook portion of the second part is located adjacent to the rear end of the fastening hole 421a, it will be understood that the jack is in a state capable of being coupled to the connector 410 . will be.

Although not shown, when the force applied to the first portion of the locking bar 422 is released, the elastic member (not shown) is restored to its original shape. At this time, by the elastic member (not shown), the first part of the locking bar 422 is rotated upward, and the second part is rotated forward.

Accordingly, it will be understood that in the above state, since the hook portion of the second portion is positioned adjacent to the front end of the fastening hole 421a , the jack remains coupled to the connector 410 .

The elastic member (not shown) may be provided in any shape that can be deformed to store a restoring force and transmit the stored restoring force to another member. In an embodiment, the elastic member (not shown) may be provided as a torsion spring.

Accordingly, when the jack is coupled to the connector 410 , arbitrary separation between the connector 410 and the jack by the locking bar 422 may be prevented.

Frame 430 forms the remainder of the contour of mechanism structure 400 . In the illustrated embodiment, the frame 430 forms the top, left, right portions and rear sides of the outline of the mechanism structure 400 .

The frame 430 is coupled to other components of the mechanism structure 400 and the movement limiter 800 . Specifically, a connector 410 , a connector fastening part 420 , and a lifting frame 450 are coupled to the frame 430 . In addition, the vertical link unit 860 is coupled to the frame 430 to be liftable.

A space is formed inside the frame 430 . In the space, other components of the mechanism structure 400 and the movement limiter 800 are accommodated. Specifically, the mechanism 440 and the vertical link unit 860 are accommodated in the space formed inside the frame 430 .

In the illustrated embodiment, the frame 430 includes a horizontal frame 431 , a vertical frame 432 , a rear frame 433 , and a bracket 434 .

The horizontal frame 431 forms one side of the frame 430 , the upper side in the illustrated embodiment.

An opening is formed through the inside of the horizontal frame 431 . A connector 410 and a connector fastening part 420 may pass through the opening. Accordingly, the connector 410 and the connector fastening part 420 may be exposed to the upper side of the frame 430 .

In the illustrated embodiment, the horizontal frame 431 is formed in a rectangular plate shape in which the extended length in the left and right directions is longer than the extended length in the front and rear directions. Each corner of the horizontal frame 431 in the left and right direction is continuous with the vertical frame 432 . The edge of the rear side of the horizontal frame 431 is continuous with the rear frame 433 .

The horizontal frame 431 is coupled to the elevating frame 450 . Specifically, the elevating frame 450 may be coupled to the horizontal frame 431 so as to be elevating with respect to the horizontal frame 431 .

The vertical frame 432 forms the other side of the frame 430 , left and right in the illustrated embodiment.

The vertical frame 432 is continuous with the horizontal frame 431 . In the illustrated embodiment, an upper edge of the vertical frame 432 is continuous with each edge of the horizontal frame 431 in the left-right direction.

The vertical frame 432 is continuous with the rear frame 433 . In the illustrated embodiment, the rear side corners of the vertical frame 432 are continuous with each of the left and right corners of the rear frame 433, respectively.

The vertical frame 432 supports the elevating frame 450 to be elevating. The elevating frame 450 may be lifted up and down in a state coupled to the vertical frame 432 .

A plurality of vertical frames 432 may be provided. The plurality of vertical frames 432 may face each other with a space formed inside the frame 430 and a mechanism 440 accommodated in the space therebetween.

In the illustrated embodiment, two vertical frames 432 are provided to form the left and right sides of the frame 430 , respectively.

The rear frame 433 forms the other other side of the frame 430 , the rear side in the illustrated embodiment.

The rear frame 433 is continuous with the horizontal frame 431 . In the illustrated embodiment, the upper edge of the rear frame 433 is continuous with the rear side edge of the horizontal frame 431 .

The rear frame 433 is continuous with the vertical frame 432 . In the illustrated embodiment, each corner in the left and right direction of the rear frame 433 is continuous with the front side corner of the vertical frame 432 , respectively.

Accordingly, a space surrounded by the horizontal frame 431 , the vertical frame 432 , and the rear frame 433 is formed inside the frame 430 .

A bracket 434 is coupled to the rear frame 433 .

The bracket 434 supports the vertical link unit 860 of the movement limiting unit 800 to be elevating. The bracket 434 is accommodated in a space formed inside the frame 430 and is coupled to the rear frame 433 .

A portion of the bracket 434 may be spaced apart from the rear frame 433 . A vertical extension portion 861 of the vertical link portion 860 may pass through a space in which the one portion of the bracket 434 is spaced apart from the rear frame 433 to be elevating.

The lifting frame 450 is lifted up and down in the vertical direction according to whether the connector 410 and the jack are fastened.

Specifically, when the connector 410 and the jack are fastened, the lifting frame 450 is lowered downward. In addition, when the connector 410 and the jack are separated, the lifting frame 450 is raised upward.

The mechanism 440 is operated by receiving a control signal from an external control power source. As the mechanism 440 is actuated, the breaker 20 may be actuated to either the closed state or the trip state.

Mechanism 440 is accommodated in a space formed inside of frame 430 . Mechanism 440 is electrically connected to connector 410 . Control signals may be communicated to the mechanism 440 via a connector 410 coupled to the jack.

The process of operating the mechanism 440 and thus the process of operating the circuit breaker 20 in the closed state or trip state is a well-known technique, and thus a detailed description thereof will be omitted.

In one embodiment, the mechanism 440 may elastically support the lifting frame 450 .

The elevating frame 450 is coupled to the horizontal frame 431 so as to be elevating. The lifting frame 450 may be lifted in a direction toward the horizontal frame 431 or in a direction opposite to the horizontal frame 431 .

The elevating frame 450 is coupled to the vertical frame 432 so as to be elevating. The elevating frame 450 may be elevated in the vertical direction in a state in which each end in the extending direction, left and right directions in the illustrated embodiment, is coupled to the vertical frame 432 .

The lifting frame 450 is connected to the connector 410 and the connector fastening part 420 . The lifting frame 450 is lowered together with the connector 410 and the connector fastening part 420 as the jack is coupled to the connector 410 and pressed. In addition, the lifting frame 450 is raised together with the connector 410 and the connector fastening part 420 as the connector 410 and the jack are separated.

The lifting frame 450 is connected to the vertical link unit 860 of the movement limiter 800 . Specifically, the lifting frame 450 is coupled to the head portion 862 of the vertical link portion 860, it may be lifted together.

* The lifting frame 450 is elastically supported by the vertical link portion 860 of the movement limiter 800 . Specifically, the lifting frame 450 is elastically supported by the return spring 864 of the vertical link portion 860 .

When the jack is separated from the connector 410 , the lifting frame 450 may be raised to its original position by the restoring force provided by the return spring 864 .

A detailed description of a process in which the elevating frame 450 is elevated as the jack is coupled or separated from the connector 410 will be described later.

In the illustrated embodiment, the elevating frame 450 is provided in a plate shape having a length in the left and right direction longer than an extension length in the front-rear direction and a thickness in the vertical direction. The elevating frame 450 may have any shape that can be elevated and elevated together with the connector 410 and the connector fastening part 420 by being elevatingly coupled to the horizontal frame 431 .

When the circuit breaker 20 is operated in the closed state, the circuit breaker 500 connects the circuit breaker 20 and an external power source or load to be energized. In addition, when the circuit breaker 20 operates in a trip state, the circuit breaker 500 cuts off electricity between the circuit breaker 20 and an external power source or load.

The blocking portion 500 is coupled to the mechanism 440 . When the mechanism 440 is rotatably operated, the blocking unit 500 connected thereto is also operated so that the fixed contact (not shown) and the movable contact (not shown) are spaced apart from each other.

Accordingly, the cut-off unit 500 may be cut off from energization with an external power source or load.

The blocking unit 500 is connected to an external power source or a load to be energized. The connection is achieved by the terminal unit 600 energably connected to the blocking unit 500 . The blocking unit 500 is electrically connected to the terminal unit 600 .

A plurality of blocking units 500 may be provided. The plurality of blocking units 500 may be physically and electrically spaced apart from each other so that currents in different phases may pass therethrough. In the illustrated embodiment, the blocking unit 500 is provided with three including the first blocking unit 510 , the second blocking unit 520 , and the third blocking unit 530 .

The plurality of blocking units 500 are electrically connected to the plurality of terminal units 600 , respectively. In the illustrated embodiment, the first to third blocking parts 510 , 520 , and 530 are electrically connected to the first to third terminal parts 610 , 620 , and 630 , respectively.

The terminal unit 600 is electrically connected to an external power source or load. In addition, the terminal unit 600 is electrically connected to the blocking unit 500 .

A plurality of terminal units 600 may be provided. The plurality of terminal units 600 may be physically and electrically spaced apart from each other so that currents in different phases may pass therethrough. In the illustrated embodiment, three terminal parts 600 are provided, including a first terminal part 610 , a second terminal part 620 , and a third terminal part 630 .

As described above, the plurality of terminal units 600 are respectively energably connected to the plurality of blocking units 500 .

This is due to the fact that the current passed through the circuit breaker 20 according to the embodiment of the present invention is three-phase. Accordingly, it will be understood that the number of the blocking units 500 and the number of the terminal units 600 may be changed according to the phase of the current being conducted.

In this case, a plurality of first to third terminal parts 610 , 620 , and 630 may be provided, respectively. In the illustrated embodiment, two first to third terminal parts 610 , 620 , and 630 are provided, respectively, and are spaced apart from each other in the vertical direction to be coupled to the first to third blocking parts 510 , 520 and 530 , respectively. .

Each of the two first to third terminal parts (610, 620, 630) is supplied with an external power source, and the other of the two first to third terminal parts (610, 620, 630) is supplied with an external load. It will be understood that possibly connected.

3. Description of the configuration of the cart unit 700 according to an embodiment of the present invention

Referring back to FIGS. 10 to 19 and 21 to 24 , the circuit breaker 20 according to an embodiment of the present invention includes a cart unit 700 .

The cart unit 700 supports each component provided in the circuit breaker 20 from the lower side. Each component provided in the circuit breaker 20 may be seated or coupled to the cart unit 700 .

The cart 700 is coupled to the casing 10 . Specifically, the cart unit 700 is slidably coupled to the guide rail 240 , the guide unit 250 and the circuit breaker coupling unit 300 . The cart unit 700 may be slidably moved in the direction in which the circuit breaker 20 is inserted and withdrawn from the state coupled to the casing 10 , in the illustrated embodiment, to the front side or the rear side.

In particular, the cart unit 700 according to an embodiment of the present invention, together with a movement limiting unit 800 to be described later, may slide or be limited in movement depending on whether the connector 410 and the jack are coupled.

Hereinafter, a cart unit 700 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the illustrated embodiment, the cart part 700 includes a body part 710 , a wheel part 720 , an insertion guide part 730 , and an operation handle part 740 .

The body portion 710 forms a lower body of the cart portion 700 . The body portion 710 is combined with other components of the cart portion 700 , in the illustrated embodiment, the wheel portion 720 , the insertion guide portion 730 , and the manipulation handle portion 740 .

In addition, the body 710 may be combined with other components provided in the circuit breaker 20 . In the illustrated embodiment, the body portion 710 is coupled to the mechanism structure 400 , the blocking portion 500 , the terminal portion 600 , and the movement limiting portion 800 to support them.

In the illustrated embodiment, the body portion 710 extends in the front-rear and left-right directions, and is provided in a rectangular plate shape having a thickness in the vertical direction. The shape of the body portion 710 may be changed to any shape capable of performing the above-described functions.

In any one of the extension directions of the body 710 , the wheel unit 720 is rotatably coupled to each corner in the left and right directions in the illustrated embodiment.

In addition, the insertion guide part 730 and the operation handle part 740 are coupled to the other one of the extension directions of the body part 710 , the front side edge in the illustrated embodiment. In particular, the manipulation handle unit 740 is coupled to the corner so as to be lifted up and down in the vertical direction.

One side of the body portion 710 opposite to the mechanism structure 400, the lower side of the body portion 710 in the illustrated embodiment, the movement limiting portion 800 is accommodated and coupled.

In the illustrated embodiment, the body portion 710 includes a first support plate 711 and a second support plate 712 .

The first support plate 711 is coupled to one edge of the body portion 710, the front side in the illustrated embodiment. The first support plate 711 forms a part of the vertical direction of the one side of the body portion 710 . In the illustrated embodiment, the first support plate 711 forms the front left side of the body portion 710 .

The first support plate 711 extends at a predetermined angle with the horizontal portion of the body 710 . In an embodiment, the first support plate 711 may extend perpendicularly to a horizontal portion of the body 710 .

The first support plate 711 extends downward in a direction opposite to the mechanism structure 400 , in the illustrated embodiment. In this case, it is preferable that the lower end of the first support plate 711 is extended enough to be positioned above the portion where the wheel part 720 is in contact with the ground or the floor.

In other words, the lower end of the first support plate 711 does not contact the ground or the floor surface.

The first support plate 711 extends in any one of the directions in which the horizontal portion of the body 710 extends, in the illustrated embodiment, in the left and right directions. That is, the first support plate 711 is a plate shape having a length in the left-right direction, a width in the up-down direction, and a thickness in the front-back direction.

The extended length of the first support plate 711 , that is, the length in the left and right direction, may be shorter than the length in the left and right direction of the horizontal portion of the body 710 . This is due to the fact that, in addition to the first support plate 711 , the second support plate 712 and the insertion guide part 730 are provided at the front side edge of the horizontal plane portion of the body part 710 .

The first support plate 711 is disposed in parallel with the second support plate 712 in the extending direction of the insertion guide part 730 interposed therebetween, and in the left-right direction in the illustrated embodiment. In an embodiment, the first support plate 711 may be formed and disposed symmetrically with the second support plate 712 with respect to the insertion guide part 730 .

One side of the first support plate 711 facing the base 100 of the casing 10, a recess is formed in the lower side in the illustrated embodiment. The groove may be formed to have a higher position than the circuit breaker coupling part 300 .

* Therefore, when the circuit breaker 20 is moved in the front-rear direction, the first support plate 711 and the circuit breaker coupling part 300 do not come into contact.

The first support plate 711 is spaced apart from each other along the second support plate 712 and its extension direction, and in the left-right direction in the illustrated embodiment. An insertion guide part 730 is positioned between the first support plate 711 and the second support plate 712 .

A first support groove 711a and a second guide groove 711b are formed inside the first support plate 711 (best shown in FIG. 12 ).

A pressing pin 856 of the rotary link unit 850 is movably through-coupled to the first guide groove 711a.

The first guide groove 711a is formed through the thickness direction of the first support plate 711 , in the front-rear direction in the illustrated embodiment. In addition, the first guide groove 711a is formed to extend in the direction in which the rotary link unit 850 moves, in the illustrated embodiment, in the left and right direction.

At this time, the pressing pin 856 is moved in an arc as the rotary link unit 850 is operated. Accordingly, the first guide groove 711a may be formed in an arc shape with a center of the first guide groove 711a positioned on the upper side and having a central angle of a predetermined size.

Also, the extension length of the first guide groove 711a may be determined according to the distance at which the limiting plate 820 connected thereto is moved to be in contact with and spaced apart from the blocking plate 340 as the rotation link part 850 is operated.

That is, the first guide groove 711a may extend by a distance between a position where the locking protrusion 828 of the limiting plate 820 contacts the blocking protrusion 342 of the blocking plate 340 and a position where it is spaced apart.

In the illustrated embodiment, the first guide groove 711a is located biased to the right side of the first support plate 711 . In addition, the first support plate 711 is located below the second connection part 855 of the rotation link part 850 .

A second guide groove 711b is formed on the left side of the first guide groove 711a.

The operation handle part 740 is movably coupled through the second guide groove 711b.

The second guide groove 711b is formed through the thickness direction of the first support plate 711 in the front-rear direction in the illustrated embodiment. In addition, the second guide groove 711b is formed to extend in the direction in which the manipulation handle unit 740 moves, in the illustrated embodiment, in the vertical direction.

As will be described later, the manipulation handle unit 740 is connected to the lifting unit 810 . As the manipulation handle unit 740 is vertically manipulated, the insertion protrusion 815 may be inserted into or withdrawn from the locking groove unit 330 .

In the illustrated embodiment, the second guide groove 711b is located adjacent to the central portion of the first support plate 711 . In addition, the second guide groove 711b is located on the left side of the first guide groove 711a, spaced apart from the first guide groove 711a.

The second guide groove 711b extends in the vertical direction by a predetermined length. In this case, the extended length of the second guide groove 711b may be determined according to the distance the insertion protrusion 815 needs to be moved upward in order to be completely drawn out into the locking groove portion 330 .

The second guide groove 711b may be partially covered by the limiting plate 820 . In the illustrated embodiment, when the limiting plate 820 is moved to the left, the upper side of the second guide groove 711b is partially covered.

In the above situation, the manipulation handle portion 740 can be moved only between the lower end of the limiting plate 820 and the lower end of the second guide groove 711b.

Meanwhile, as described above, the circuit breaker coupling part 300 may be formed to have different heights along the extending direction thereof. Therefore, in a state where the limiting plate 820 partially covers the second guide groove 711b, the manipulation handle part 740 is moved to a height at which the insertion protrusion 815 can be withdrawn from the first groove part 331 . can

Conversely, in the above state, the manipulation handle part 740 cannot be moved to a height at which the insertion protrusion 815 can be withdrawn from the second groove part 332 .

Accordingly, in a state in which the limiting plate 820 partially covers the second guide groove 711b, the circuit breaker 20 moves in the direction (ie, the front side) drawn out from the casing 10 in the test position. can be

Similarly, in a state in which the limiting plate 820 partially covers the second guide groove 711b, the circuit breaker 20 cannot be moved from the service position.

As will be described later, considering that the limiting plate 820 partially covers the second guide groove 711b in a state in which the jack is separated from the connector 410, only in this state, the circuit breaker 20 is connected to the casing ( It will be understood that 10) can be moved.

The second support plate 712 is located on the one side edge of the body portion 710, the front side in the illustrated embodiment. The second support plate 712 forms the remaining portion in the vertical direction of the one side of the body portion 710 . In the illustrated embodiment, the second support plate 712 forms the front right side of the body portion 710 .

The second support plate 712 extends at a predetermined angle with the horizontal portion of the body 710 . In one embodiment, the second support plate 712 may extend perpendicularly to the horizontal portion of the body portion 710 .

The second support plate 712 extends in a direction opposite to the mechanism structure 400 , in the illustrated embodiment, downward. At this time, it is preferable that the lower end of the second support plate 712 extends so that the wheel portion 720 is positioned above the portion in contact with the ground or the floor.

In other words, the lower end of the second support plate 712 does not contact the ground or the floor surface.

The second support plate 712 extends in any one of the directions in which the horizontal portion of the body 710 extends, in the illustrated embodiment, in the left and right directions. That is, the second support plate 712 is a plate having a length in the left-right direction, a width in the up-down direction, and a thickness in the front-back direction.

The extended length of the second support plate 712 , that is, the length in the left-right direction may be shorter than the length in the left-right direction of the horizontal portion of the body 710 .

The second support plate 712 is disposed in parallel with the first support plate 711 in the extending direction of the insertion guide part 730 interposed therebetween, in the left-right direction in the illustrated embodiment. In an embodiment, the second support plate 712 may be formed and disposed symmetrically with the first support plate 711 with respect to the insertion guide part 730 .

The wheel part 720 is rotated so that the circuit breaker 20 can be slidably moved in the direction accommodated in the casing 10 or the direction with which the casing 10 is drawn out, in the illustrated embodiment, in the front-rear direction.

The wheel part 720 is rotatably coupled to the body part 710 . The wheel part 720 rotatably supports the body part 710 and other components of the cart part 700 .

The wheel unit 720 may be provided in any shape that can be rotated to move the cart unit 700 . In the illustrated embodiment, the wheel portion 720 is formed by stacking a plurality of disks.

A plurality of wheel units 720 may be provided. The plurality of wheel parts 720 may be rotatably coupled to the body part 710 at different positions. In the illustrated embodiment, four wheel parts 720 are provided. Among them, a pair of wheel parts 720 are positioned to be spaced apart from each other in the front-rear direction of the left edge of the body part 710 . In addition, the other pair of wheel parts 720 are positioned to be spaced apart from each other in the front-rear direction of the right edge of the body part 710 .

The wheel part 720 is rotatably coupled to the guide rail 240 . Specifically, the wheel part 720 is formed inside the guide rail 240 and is accommodated in a space extending in the extension direction of the guide rail 240 (ie, the front-rear direction). The wheel part 720 may be rotated clockwise or counterclockwise in the space of the guide rail 240 .

As described above, a plurality of wheel parts 720 are provided. In addition, a plurality of guide rails 240 are also provided. Accordingly, different pairs of wheel parts 720 rotatably coupled to different sides of the body part 710 may be rotatably coupled to spaces formed inside different guide rails 240 , respectively.

The insertion guide part 730 is a part gripped by the operator when the cart part 700 is coupled to the casing 10 . The operator may hold the insertion guide unit 730 to control the cart unit 700 , and thereby insert the circuit breaker 20 into the casing 10 .

The insertion guide part 730 is coupled to the body part 710 . Specifically, the insertion guide portion 730 is coupled to one side of the body portion 710 opposite to the mechanism structure 400, the lower side of the body portion 710 in the illustrated embodiment.

The insertion guide part 730 extends in any one of the directions in which the body part 710 extends, and in the front-rear direction in the illustrated embodiment. The upper side of the insertion guide unit 730 is coupled to the lower side of the body unit 710 , and one side of the extension direction, in the illustrated embodiment, the front side end may be exposed toward the front side of the body unit 710 .

The end at which the insertion guide part 730 is exposed to the outside of the body part 710 may be provided with a bar that can be gripped by a user. That is, in the illustrated embodiment, the end of the insertion guide portion 730 includes two plate members each coupled to the body portion 710 and disposed to face each other and a bar extending between the two plate members.

An operator may grip the bar to easily control the movement of the cart unit 700 .

The insertion guide part 730 may be positioned between the first support plate 711 and the second support plate 712 . In an embodiment, the insertion guide part 730 may be positioned to be spaced apart from each other by the same distance from the first support plate 711 and the second support plate 712 along the left and right directions of the body part 710 .

In other words, the insertion guide portion 730 may be located in the middle portion along the left and right direction of the body portion (710).

The operation handle unit 740 is operated to move in the direction toward the mechanism structure 400 or in the opposite direction, in the illustrated embodiment, in the vertical direction. The movement limiting unit 800 is operated by the manipulation of the manipulation handle unit 740 , so that the movement of the cart unit 700 in the front-rear direction may be permitted or restricted.

The operation handle part 740 is coupled to the first support plate 711 . Specifically, the manipulation handle unit 740 is coupled through the second guide groove 711b formed through the first support plate 711 .

The manipulation handle unit 740 extends in any one of the directions in which the body unit 710 extends, in the illustrated embodiment, in the front-rear direction. The manipulation handle part 740 is exposed to one side of the extension direction, and the front end in the illustrated embodiment is exposed to the front side of the body part 710 . The operator may grip the front end to move the manipulation handle unit 740 in the vertical direction.

The operation handle unit 740 may be coupled to the insertion protrusion 815 of the lifting unit 810 at the other end of the extended direction, and the rear end in the illustrated embodiment. When the manipulation handle unit 740 is operated upward or downward, the insertion protrusion 815 may also be moved upward or downward to be inserted into or withdrawn from the engaging groove 330 .

Accordingly, the operator may limit or allow the movement of the circuit breaker 20 by lifting the operation handle portion 740 .

The manipulation handle unit 740 may be maintained at a position manipulated by an operator. Specifically, the operation handle unit 740 may be maintained at the position operated by the operator as long as no additional external force is applied.

4. Description of the configuration of the movement limiter 800 according to an embodiment of the present invention

Referring back to FIGS. 10 to 24 , the circuit breaker 20 according to an embodiment of the present invention includes a movement limiting unit 800 .

The movement limiter 800 may be operated by an operator to allow or restrict movement of the circuit breaker 20 in a direction accommodated in the casing 10 or in a direction drawn out from the casing 10 .

The movement limiting unit 800 is coupled to the mechanism structure 400 and the cart unit 700 . In addition, the movement limiter 800 is coupled to the mechanism structure 400 and the cart 700 to be moved or rotatably moved in the vertical direction, the front-back direction, the left-right direction.

The movement limiter 800 is connected to the mechanism structure 400 . When the mechanism structure 400 is operated, the movement limiter 800 may be operated in conjunction with the operation.

The movement limiting unit 800 is connected to the cart unit 700 . When the cart unit 700 is operated, the movement limiter 800 may be operated in conjunction with the operation.

In particular, the movement limiter 800 according to an embodiment of the present invention may allow movement of the circuit breaker 20 through at least two steps.

Therefore, compared to the case where the circuit breaker 20 is moved by a single step, the coupling state between the connector 410 and the jack can be stably maintained.

In addition, as the movement of the circuit breaker 20 is allowed through a plurality of steps, a situation in which the circuit breaker 20 is arbitrarily moved due to an operator's erroneous operation can be prevented.

Accordingly, the operation of the circuit breaker 20 and the operation reliability and stability of the operator may be improved. Furthermore, damage to the circuit breaker 20 due to an unexpected accident can be prevented.

Hereinafter, the movement limiter 800 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the illustrated embodiment, the movement limiting unit 800 includes a lifting unit 810 , a limiting plate 820 , a fastening member 840 , a rotating link unit 850 , and a vertical link unit 860 .

The lifting unit 810 is raised and lowered together with the lifting of the operation handle unit 740 . The insertion protrusion 815 is inserted into or withdrawn from any one of the locking grooves 330 according to the elevation of the lifting unit 810 .

That is, any one of the above-described plurality of steps is performed by the lifting unit 810 . Accordingly, the circuit breaker 20 may be slidably moved in the direction accommodated in the casing 10 or the withdrawal direction, that is, in the front-rear direction.

The lifting unit 810 is coupled to the cart unit 700 . Specifically, the lifting unit 810 is coupled to one side of the body portion 710 opposite to the mechanism structure 400, to the lower side in the illustrated embodiment, so as to be lifted in the vertical direction.

The lifting unit 810 is connected to the manipulation handle unit 740 . The lifting unit 810 may be moved in the vertical direction together with the manipulation handle unit 740 .

In the illustrated embodiment, the lifting unit 810 includes an extension bar 811 , a shaft portion 812 , a support protrusion 813 , a guide bracket 814 , an insertion protrusion 815 , and a lifting spring 816 .

The extension bar 811 is connected to the manipulation handle unit 740 and moves in the vertical direction in conjunction with the lifting and lowering of the manipulation handle unit 740 .

The extension bar 811 extends in the same direction as the extension direction of the manipulation handle unit 740 , in the illustrated embodiment, in the front-rear direction. One end of the extension bar 811 facing the manipulation handle unit 740 , in the illustrated embodiment, the front end is connected to the rear end of the manipulation handle unit 740 .

In this case, a separate member (not shown) for interlocking their lifting and lowering may be provided between the extension bar 811 and the manipulation handle unit 740 .

The other end in the direction in which the extension bar 811 extends, in the illustrated embodiment, the rear end is rotatably coupled to the shaft portion 812 . The extension bar 811 may be rotated in a clockwise or counterclockwise direction about the shaft portion 812 .

A plurality of extension bars 811 may be provided. The plurality of extension bars 811 are spaced apart from each other and disposed to face each other. In the illustrated embodiment, two extension bars 811 are provided and are respectively connected to the manipulation handle unit 740 and the shaft unit 812 . The plurality of extension bars 811 may be rotated together in association with the lifting and lowering of the manipulation handle unit 740 .

The extension bar 811 is coupled to the guide bracket 814 . Specifically, the extension bar 811 is coupled to the guide bracket 814 by the guide protrusion 811a to be liftable.

The extension bar 811 is coupled to the insertion protrusion 815 . The extension bar 811 may be rotated together with the insertion protrusion 815 .

The extension bar 811 is elastically supported by a lifting spring 816 . When the extension bar 811 is moved upward, the lifting spring 816 is compressed to store a restoring force.

In the illustrated embodiment, the extension bar 811 includes a guide protrusion 811a.

The guide protrusion 811a is movably coupled to the guide bracket 814 to guide the elevation of the extension bar 811 .

The guide protrusion 811a is located on the outside of the extension bar 811 . In the illustrated embodiment, the guide protrusion 811a is positioned in a direction opposite to the direction in which the plurality of extension bars 811 face each other. That is, the guide protrusion 811a is positioned on the left side of the extension bar 811 positioned on the left side and on the right side of the extension bar 811 positioned on the right side, respectively.

The guide protrusion 811a may be formed to protrude outward by a predetermined length from the position of the extension bar 811 .

The guide protrusion 811a is movably coupled to the guide bracket 814 . Specifically, the guide protrusion 811a is movably coupled to the elevating guide groove 814a formed in the vertical direction on the guide bracket 814 .

When the manipulation handle unit 740 is lifted in the vertical direction, the extension bar 811 and the guide protrusion 811a are also lifted in the vertical direction. At this time, the extension bar 811 is lifted while maintaining the guide protrusion 811a coupled to the guide bracket 814 .

Accordingly, the extension bar 811 may be raised and lowered only in the vertical direction without being moved arbitrarily in other directions.

The shaft portion 812 functions as a rotation shaft on which the extension bar 811 is rotated.

The shaft portion 812 is rotatably coupled to the extension bar 811 . In the illustrated embodiment, the shaft portion 812 is rotatably coupled to the other end in the extending direction of the extension bar 811, that is, the rear end. The shaft portion 812 may be rotatably through-coupled with the plurality of extension bars 811 , respectively.

The shaft portion 812 is rotatably coupled through the support protrusion 813 . The shaft portion 812 may be rotatably supported by the support protrusion 813 .

In the illustrated embodiment, the shaft portion 812 has a circular cross-section and a cylindrical shape extending in the left-right direction. The shape of the shaft portion 812 may be any shape that can be rotatably through-coupled with the extension bar 811 and the support protrusion 813 , respectively.

The support protrusion 813 rotatably supports the shaft portion 812 . A shaft portion 812 is rotatably coupled through the support protrusion 813 .

The support protrusion 813 is coupled to one side of the body portion 710 opposite to the mechanism structure 400 , to the lower side in the illustrated embodiment. The support protrusion 813 may be formed to extend downward from the lower surface of the body portion 710 .

The support protrusion 813 is located adjacent to the rear side end of the extension bar 811 . The support protrusion 813 may be positioned between the plurality of extension bars 811 .

The guide bracket 814 partially surrounds the extension bar 811 . The guide bracket 814 guides the elevation according to the rotation of the extension bar 811 .

A space is formed inside the guide bracket 814 . The insertion protrusion 815 is accommodated in the space to be liftable. The guide bracket 814 may guide the elevation of the insertion protrusion 815 according to the rotation of the extension bar 811 .

The guide bracket 814 may be disposed adjacent to a position where the manipulation handle unit 740 and the extension bar 811 are coupled. In the illustrated embodiment, the guide bracket 814 partially surrounds a portion of the extension bar 811 adjacent to the portion where the operation handle unit 740 and the extension bar 811 are coupled.

The guide bracket 814 is coupled to one side of the body portion 710 opposite to the mechanism structure 400 , to the lower side in the illustrated embodiment.

The guide bracket 814 is formed penetrating in the direction in which the extension bar 811 extends, in the illustrated embodiment, in the front-rear direction. That is, the front side and the rear side of the guide bracket 814 are open and communicate with the outside. The extension bar 811 may pass through the front side and the rear side of the guide bracket 814 .

Elevating guide grooves 814a extending in the vertical direction are formed in the portion where the guide bracket 814 is coupled to the lower side of the body 710, left and right surfaces in the illustrated embodiment. A guide protrusion 811a is inserted and coupled to the elevating guide groove 814a. The guide protrusion 811a may be moved in the vertical direction along the elevating guide groove 814a.

A through-hole is formed in the portion of the guide bracket 814 facing the one side, that is, the lower side of the body portion 710 , in the illustrated embodiment, the lower side. An insertion protrusion 815 is movably coupled to the through hole in an up-down direction.

The lower surface of the guide bracket 814 may be spaced apart from the upper surface 311 of the rail unit 310 . That is, the lower surface of the guide bracket 814 is located adjacent to the upper surface 311 of the rail part 310, but may not be in contact.

Accordingly, when the circuit breaker 20 is inserted into the casing 10 , friction between the guide bracket 814 and the rail part 310 does not occur, so that the durability of the circuit breaker assembly 1 can be increased.

The insertion protrusion 815 is inserted into or withdrawn from the locking groove 330 . Accordingly, movement of the circuit breaker 20 may be permitted or restricted.

Specifically, when the insertion protrusion 815 is inserted into the locking groove portion 330 , the movement of the circuit breaker 20 is limited. In addition, when the insertion protrusion 815 is withdrawn from the locking groove portion 330 , the movement of the circuit breaker 20 is permitted.

The insertion protrusion 815 is coupled to the extension bar 811 . The insertion protrusion 815 may be lifted together as the extension bar 811 is lifted. That is, the vertical movement of the insertion protrusion 815 may be achieved as the manipulation handle unit 740 and the extension bar 811 connected thereto move in the vertical direction.

The insertion protrusion 815 is accommodated in a space formed inside the guide bracket 814 . In addition, the insertion protrusion 815 is through-coupled to the one side of the guide bracket 814, a through hole formed through the lower surface in the illustrated embodiment.

The insertion protrusion 815 is accommodated in the space of the guide bracket 814 to be elevating. The insertion protrusion 815 may be raised and lowered together with the manipulation handle unit 740 and the extension bar 811 connected thereto.

The insertion protrusion 815 is elastically supported by a lifting spring 816 .

The lifting spring 816 elastically supports the insertion protrusion 815 that is raised and lowered together with the operation handle unit 740 . The lifting spring 816 presses the insertion protrusion 815 downward, that is, in a direction toward the breaker coupling part 300 . Accordingly, the insertion protrusion 815 inserted into the locking groove portion 330 is not arbitrarily drawn out.

When the manipulation handle unit 740 is operated upward, the extension bar 811 and the insertion protrusion 815 connected to the manipulation handle unit 740 move upward together. At this time, the lifting spring 816 is pressed by the extension bar 811 or the insertion protrusion 815 to deform the shape and store the restoring force.

* When the external force applied to the operation handle unit 740 is extinguished, the lifting spring 816 is restored to its original shape and provides the stored restoring force to the insertion protrusion 815 . At this time, the restoring force is downward, that is, in a direction toward the circuit breaker coupling part 300 . Accordingly, the insertion protrusion 815 may be maintained while being inserted into the locking groove portion 330 .

Therefore, in the embodiment shown in FIGS. 21 to 24 , it will be understood that the insertion protrusion 815 is withdrawn from the locking groove 330 by applying an external force to the manipulation handle part 740 .

The lifting spring 816 may be provided in any form capable of storing the restoring force by shape deformation and transmitting the stored restoring force to the outside. In the illustrated embodiment, the elevating spring 816 is provided as a coil spring.

The limiting plate 820 is moved in the direction in which the first support plate 711 extends, in the illustrated embodiment, in the left-right direction to contact or separate from the blocking plate 340 . When the limiting plate 820 comes into contact with the blocking plate 340 , the movement of the circuit breaker 20 in the direction in which it is withdrawn from the casing 10 , that is, toward the front side is restricted.

The limiting plate 820 is movably coupled to the body 710 . Specifically, the limiting plate 820 is coupled to the inner side of the first support plate 711, the rear side in the illustrated embodiment, movably in the left and right direction. The coupling is achieved by means of a fastening member 840 .

The limiting plate 820 may be moved according to the elevation of the vertical link unit 860 . Specifically, when the vertical link unit 860 is raised and lowered in the vertical direction, the rotation link unit 850 connected to the vertical link unit 860 is rotated clockwise or counterclockwise.

Accordingly, the limit plate 820 connected to the rotation link unit 850 may be moved left or right.

In this case, when the limiting plate 820 is moved to the right, it may be understood that it is moved in a direction toward the blocking plate 340 . That is, when the limiting plate 820 is moved to the right, the limiting plate 820 and the blocking plate 340 come into contact with each other. Accordingly, the movement to the front side of the circuit breaker 20 is restricted.

Also, it may be understood that when the limiting plate 820 is moved to the left, it is moved in a direction opposite to the blocking plate 340 . That is, when the limiting plate 820 is moved to the left, the limiting plate 820 and the blocking plate 340 are spaced apart. Accordingly, movement to the front side of the circuit breaker 20 is permitted.

The limiting plate 820 is connected to the rotation link unit 850 . Elevation of the vertical link unit 860 is converted into horizontal movement of the limiting plate 820 by the rotary link unit 850 . In an embodiment, the limit plate 820 may be link-coupled to the rotation link unit 850 .

In the illustrated embodiment, the limiting plate 820 is link-coupled with the second link 853 of the rotary link unit 850 . The link engagement is achieved by means of press pins 856 .

In the embodiment shown in FIG. 20 , the limiting plate 820 includes a first portion 821 , a second portion 822 , an engaging groove 823 , a limiting protrusion 824 , a first moving groove 825 , and a first 2 includes a moving groove 826 , a pin insertion portion 827 , and a locking projection 828 .

The first portion 821 forms a portion facing the body portion 710 among portions of the limiting plate 820 , in the illustrated embodiment, the upper side. The first portion 821 extends in the direction in which the first support plate 711 extends, in the illustrated embodiment, in the left-right direction.

The first portion 821 is movably coupled to the first support plate 711 . The coupling is achieved by a first fastening member 841 .

The first portion 821 is continuous with the second portion 822 . Specifically, the lower right portion of the first portion 821 is continuous with the upper left portion of the second portion 822 .

A limiting protrusion 824 is positioned at one end in the direction in which the first portion 821 extends, in the illustrated embodiment, at the left end. The limiting protrusion 824 is formed to protrude downward from the left end of the first portion 821 toward the manipulation handle unit 740 , in the illustrated embodiment.

In the illustrated embodiment, the first portion 821 is formed in a rectangular plate shape in which the length extended in the left and right direction is longer than the extension length in the vertical direction. The first portion 821 may be provided in any shape capable of being movably coupled to the first support plate 711 .

A first moving groove 825 is formed through the inside of the first part 821 in the thickness direction, in the illustrated embodiment, in the front-rear direction.

The first portion 821 partially surrounds the engaging groove 823 which is a space in which the operation handle portion 740 is located. In the illustrated embodiment, the first portion 821 surrounds the upper side of the engaging groove 823 .

In a state in which the limiting plate 820 is moved to the right so that the limiting plate 820 and the blocking plate 340 do not overlap in the front-rear direction, the first portion 821 may partially cover the second guide groove 711b. have.

In the above state, the distance at which the manipulation handle part 740 moves upward is reduced, but since the limiting plate 820 and the blocking plate 340 do not come into contact with each other, the circuit breaker 20 is moved in the direction in which it is drawn out from the casing 10 . It can be as described above.

The second portion 822 forms a portion opposite to the body portion 710 among portions of the limiting plate 820 , the lower side in the illustrated embodiment. The second portion 822 is formed to extend in the direction in which the first support plate 711 or the first portion 821 extends, in the illustrated embodiment, in the left-right direction.

The second portion 822 is movably coupled to the first support plate 711 . The engagement is achieved by a second fastening member 842 .

The second portion 822 is continuous with the first portion 821 . Specifically, the upper left portion of the second portion 822 is continuous with the lower right portion of the first portion 821 .

That is, the first portion 821 and the second portion 822 are disposed to be alternated with each other in the vertical direction.

In the illustrated embodiment, the second portion 822 is formed in a rectangular plate shape in which the length extended in the left and right direction is longer than the extension length in the vertical direction. In this case, the length in which the second part 822 extends in the left-right direction may be longer than the length in which the first part 821 extends in the left-right direction.

The second portion 822 may be provided in any shape capable of being movably coupled to the first support plate 711 .

A second moving groove 826 is formed through the inside of the second portion 822 in the thickness direction, in the illustrated embodiment, in the front-rear direction.

The lower end of the second portion 822 may be located above the upper end of the blocking protrusion 342 of the blocking plate 340 . That is, the lower end of the second portion 822 does not contact the blocking plate 340 .

On one side of the second part 822 opposite to the first part 821 , a pin insertion part 827 is recessed on the lower right side in the illustrated embodiment. The pressing pin 856 of the rotary link unit 850 is inserted into the pin insertion unit 827 .

Accordingly, when the rotation link unit 850 is rotated, the second portion 822 and the limiting plate 820 may be pressed by the pressing pin 856 to move left or right.

The second portion 822 partially surrounds the engaging groove 823 which is a space in which the operation handle portion 740 is located. In the illustrated embodiment, the second portion 822 surrounds the right side of the engagement groove 823 .

The end of the second portion 822 surrounding the coupling groove 823, the left portion in the illustrated embodiment may be formed to be rounded so that its upper side is convex to the lower side.

The coupling groove 823 is a space into which the manipulation handle part 740 coupled through the first support plate 711 is inserted. The manipulation handle unit 740 may be moved in the direction opposite to the direction toward the first portion 821 in the state inserted into the coupling groove 823, and in the vertical direction in the illustrated embodiment. The manipulation handle unit 740 is received through the coupling groove 823 in the front-rear direction.

The engaging groove 823 is partially surrounded by the first portion 821 , the second portion 822 , and the limiting projection 824 . In the illustrated embodiment, an upper side of the engaging groove 823 is surrounded by a first portion 821 , and a right side of the engaging groove 823 is surrounded by a second portion 822 . The left side of the engaging groove 823 is partially surrounded by a limiting projection 824 .

The remaining portion of the coupling groove 823 communicates with the outside. In the illustrated embodiment, the remaining portion and the lower side of the left side of the coupling groove 823 communicates with the outside.

The limiting projection 824 prevents any detachment of the operation handle portion 740 received in the engagement groove 823 . In addition, the limiting protrusion 824 prevents any movement of the limiting plate 820 when the manipulation handle portion 740 is not operated.

The limiting projection 824 is continuous with the first portion 821 . In the illustrated embodiment, the limiting projection 824 is formed to protrude downward from the left end of the first portion 821 .

The limiting projection 824 partially surrounds the engaging groove 823 . In the illustrated embodiment, the limiting projection 824 partially surrounds the upper left side of the engaging groove 823 .

Due to the restriction protrusion 824 , movement of the restriction plate 820 may be restricted in a state in which the manipulation handle unit 740 is moved upwardly. In addition, the manipulation handle part 740 inserted into the coupling groove 823 may not be arbitrarily separated from the coupling groove 823 .

Specifically, when the limiting plate 820 is moved to the right by a predetermined distance in the above state, the limiting protrusion 824 comes into contact with the manipulation handle part 740 . Accordingly, the limiting plate 820 is no longer moved to the right.

When the manipulation handle unit 740 is operated to move downward, even if the limit plate 820 is moved to the right, the manipulation handle unit 740 is connected through the engaging groove 823 through the opening (ie, the opening formed on the left side) of the engaging groove 823 . It can be withdrawn to the outside of (823).

The first moving groove 825 is a portion to which the first fastening member 841 for movably coupling the first portion 821 to the first support plate 711 is coupled. The first moving groove 825 is formed through the inside of the first portion 821 in the thickness direction (ie, the front-rear direction).

The first moving groove 825 is formed to extend in the direction in which the first portion 821 extends, in the illustrated embodiment, in the left-right direction. The extended length of the first moving groove 825 may be determined according to a distance that the limiting plate 820 needs to be moved in order to contact and separate from the blocking plate 340 .

That is, the limit plate 820 is blocked when one end (ie, the left end) of the first moving groove 825 toward the coupling groove 823 is in contact with the first fastening member 841 among the ends in the extending direction. It is in contact with the plate 340 .

In addition, when the other end (ie, the right end) opposite to the coupling groove 823 among the ends in the extending direction of the first moving groove 825 comes into contact with the first fastening member 841, the limiting plate 820 is formed. It is spaced apart from the blocking plate 340 .

A first fastening member 841 is movably through-coupled to the first moving groove 825 . At this time, the first fastening member 841 is also coupled through the first groove 711a of the first support plate 711 and does not move. Accordingly, it will be understood that the above-described moving process is a relative movement of the first portion 821 with respect to the first fastening member 841 .

The first moving groove 825 is positioned adjacent to the second moving groove 826 . In the illustrated embodiment, the first moving groove 825 is located on the upper side of the second moving groove 826, biased to the left.

It will be understood that the positional relationship of the first moving groove 825 and the second moving groove 826 is similar to the relative positional relationship of the first part 821 and the second part 822 .

The second moving groove 826 is a portion to which the second fastening member 842 for movably coupling the second portion 822 to the first support plate 711 is coupled. The second moving groove 826 is formed through the inside of the second portion 822 in the thickness direction (ie, the front-rear direction).

The second moving groove 826 is formed to extend in the direction in which the second portion 822 extends, in the illustrated embodiment, in the left-right direction. The extended length of the second moving groove 826 may be determined according to a distance that the limiting plate 820 needs to be moved in order to contact and separate the blocking plate 340 .

That is, the second moving groove 826 is a limiting plate 820 when one end (ie, the left end) of the ends in the extending direction in the direction toward the coupling groove 823 comes into contact with the second fastening member 842 . is in contact with the blocking plate 340 .

In addition, when the other end of the second moving groove 826 in the extending direction, which is opposite to the coupling groove 823, comes into contact with the second fastening member 842, the limiting plate 820 is connected to the blocking plate 340 are spaced apart

A second fastening member 842 is movably through-coupled to the second moving groove 826 . At this time, the second fastening member 842 is also coupled through the second groove 711b of the first support plate 711 and does not move. Accordingly, it will be understood that the above-described movement process is also a relative movement of the second portion 822 with respect to the second fastening member 842 .

The pin insertion unit 827 is a space into which the pressing pin 856 of the rotation link unit 850 is inserted. In the illustrated embodiment, the pin insert 827 is recessed on the right side of the lower surface of the second portion 822 .

When the rotation link unit 850 is operated, the inserted pressing pin 856 presses any one of the inner surfaces surrounding the pin insertion unit 827 . Accordingly, the restriction plate 820 may be moved left or right.

The locking protrusion 828 is a portion at which the limiting plate 820 is in contact with or spaced apart from the blocking plate 340 .

Specifically, when the limiting plate 820 is moved to the left, the locking protrusion 828 is spaced apart from the blocking plate 340 in the front-rear direction. In the above state, the circuit breaker 20 may be moved in the direction (ie, the front side) withdrawn from the casing 10 .

In addition, when the limiting plate 820 is moved to the right, the locking protrusion 828 overlaps the blocking plate 340 in the front-rear direction.

In the above state, when the circuit breaker 20 is moved in the direction to be drawn out from the casing 10 (ie, the front side), the locking protrusion 828 and the blocking protrusion 342 of the blocking plate 340 come into contact with each other. As a result, the circuit breaker 20 is not pulled out of the casing 10 .

The locking protrusion 828 is formed to protrude from the lower surface of the second portion 822 . In addition, the locking protrusion 828 is located on one side of the direction in which the second part 822 extends, and on the left side in the illustrated embodiment.

As the locking projection 828 protrudes from the lower surface of the second portion 822 , the lower end of the locking projection 828 is positioned lower than the lower surface of the second portion 822 . In this case, the lower end of the locking protrusion 828 is positioned lower than the upper end of the blocking protrusion 342 of the blocking plate 340 .

As described above, the lower surface of the second part 822 is located above the blocking protrusion 342 of the blocking plate 340 . Accordingly, the second portion 822 and the blocking plate 340 do not come into contact with each other.

On the other hand, the lower end of the locking protrusion 828 is positioned lower than the upper end of the blocking protrusion 342 . Accordingly, when the breaker 20 moves in the front-rear direction while the locking protrusion 828 and the blocking plate 340 are disposed to overlap in the front-rear direction, the locking protrusion 828 and the blocking protrusion 342 come into contact with each other.

Accordingly, depending on the relative positions of the limiting plate 820 and the blocking plate 340 , withdrawal of the circuit breaker 20 may be permitted or restricted.

A detailed description of a process in which the operation handle unit 740 is lifted and operated, and the vertical link unit 860 and the rotation link unit 850 are operated to allow and restrict the movement of the circuit breaker 20 will be described later.

The fastening member 840 movably couples the restriction plate 820 to the cart unit 700 . The limiting plate 820 may be moved in a left and right direction relative to the fastening member 840 while being coupled to the fastening member 840 . The fastening member 840 is through-coupled to the first support plate 711 and the limit plate 820 .

The fastening member 840 may be provided in any shape capable of coupling two or more members to be movable relative to each other. In an embodiment, the fastening member 840 may be provided as a screw member including a washer.

A plurality of fastening members 840 may be provided. The plurality of fastening members 840 may be respectively through-coupled to the limiting plate 820 and the first supporting plate 711 at different positions.

In the illustrated embodiment, the fastening member 840 includes a first fastening member 841 and a second fastening member 842 .

The first fastening member 841 is coupled to the first portion 821 of the limiting plate 820 to fasten the limiting plate 820 to the first supporting plate 711 to be movable in the left and right directions.

The first fastening member 841 is through-coupled to the first support plate 711 and the first portion 821 . Specifically, the first fastening member 841 is through-coupled to the first groove 711a formed in the first support plate 711 and the first moving groove 825 formed in the first portion 821 .

As the limiting plate 820 moves in the left and right directions, the first fastening member 841 may contact both ends of the first moving groove 825 . Accordingly, the movement distance of the limiting plate 820 may be limited.

The second fastening member 842 is coupled to the second portion 822 of the limiting plate 820 to fasten the limiting plate 820 to the first supporting plate 711 to be movable in the left and right directions.

The second fastening member 842 is through-coupled to the first support plate 711 and the second portion 822 . Specifically, the second fastening member 842 is through-coupled to the second groove 711b formed in the first support plate 711 and the second moving groove 826 formed in the second portion 822 .

As the limiting plate 820 moves in the left-right direction, the second fastening member 842 may contact both ends of the second moving groove 826 . Accordingly, the movement distance of the limiting plate 820 may be limited.

The rotary link unit 850 converts vertical movement of the vertical link unit 860 into horizontal movement. Accordingly, the limiting plate 820 may be moved in the left and right directions by the vertical movement of the vertical link unit 860 .

The rotary link unit 850 is connected to the vertical link unit 860 . The rotary link unit 850 is rotated by vertical movement of the vertical link unit 860 .

The rotation link unit 850 is connected to the limiting plate 820 . The rotation of the rotary link unit 850 may be converted into a left-right movement of the limiting plate 820 .

The rotation link part 850 is rotatably coupled to one side of the body part 710 opposite to the mechanism structure 400, to the lower side in the illustrated embodiment.

In the illustrated embodiment, the rotary link unit 850 includes a link body 851 , a first link 852 , a second link 853 , a first connection unit 854 , a second connection unit 855 , and a pressing pin ( 856).

The link body 851 forms the body of the rotary link part 850 . The link body 851 connects the limit plate 820 and the vertical link part 860 . The link body 851 extends between the limit plate 820 and the vertical link portion 860 . In the illustrated embodiment, the link body 851 extends in the front-rear direction.

The link body 851 is rotatably coupled to the body portion 710 . The link body 851 may be rotated clockwise or counterclockwise in a state coupled to the body 710 .

The link body 851 is link-coupled to the first link 852 that is link-coupled to the vertical link unit 860 . Accordingly, the link body 851 may be rotated by vertical movement of the vertical link unit 860 .

The link body 851 is link-coupled to the second link 853 that is link-coupled to the limiting plate 820 . Accordingly, the rotation of the link body 851 may be converted into the movement of the limit plate 820 in the left and right direction.

The first link 852 connects the link body 851 and the vertical link unit 860 . The first link 852 is link-coupled to the link body 851 and the vertical link unit 860, respectively. Specifically, the first link 852 is link-coupled to the link connection part 863 located below the vertical link part 860 .

When the vertical link unit 860 is raised or lowered, the first link 852 is rotated clockwise or counterclockwise. Accordingly, the link body 851 coupled to the first link 852 may also be rotated clockwise or counterclockwise.

The second link 853 connects the link body 851 and the limiting plate 820 . The second link 853 is link-coupled to the link body 851 and the limiting plate 820 , respectively.

When the link body 851 is rotated clockwise or counterclockwise, the second link 853 may be moved left or right or rotated clockwise or counterclockwise. Accordingly, the limit plate 820 coupled to the second link 853 may be moved toward the left or right.

The first connecting portion 854 link-couples the first link 852 and the link connecting portion 863 . The first connecting portion 854 is rotatably coupled to the first link 852 and the link connecting portion 863, respectively.

A second connection 855 rotatably couples the second link 853 and the first support plate 711 (best shown in FIGS. 12 and 17 ). That is, the second connection part 855 functions as a rotation axis of the second link 853 .

The pressing pin 856 is coupled to the second link 853 to transmit the rotation of the second link 853 to the limiting plate 820 .

The pressure pin 856 is rotatably coupled to the second link 853 . The pressure pin 856 may not rotate regardless of the rotation of the second link 853 .

The pressure pin 856 is coupled with the limit plate 820 . Specifically, the pressure pin 856 is inserted and coupled to the pin insertion portion 827 of the limiting plate 820 . As the second link 853 rotates, the pressure pin 858 presses the limit plate 820 in a left or right direction.

Accordingly, the locking protrusion 828 of the limiting plate 820 and the blocking protrusion 342 of the blocking plate 340 are disposed to overlap in the front-rear direction or to be spaced apart from each other, so that the withdrawal of the breaker 20 is restricted or allowed can be

The vertical link unit 860 is elevated by interlocking with the vertical movement of the elevating frame 450 as the jack is coupled to or separated from the connector 410 . Elevation of the vertical link unit 860 is converted into a rotational movement of the rotary link unit 850 . Accordingly, the limiting plate 820 may be moved in the left and right directions by the elevation of the elevation frame 450 .

The vertical link unit 860 is connected to the lifting frame 450 . The vertical link unit 860 may be raised or lowered by the vertical movement of the elevating frame 450 .

The vertical link unit 860 is connected to the rotation link unit 850 . The vertical movement of the vertical link unit 860 may be converted into a clockwise or counterclockwise rotation of the rotary link unit 850 .

The vertical link unit 860 is coupled to the mechanism structure 400 to be elevating. Specifically, the vertical link unit 860 is coupled to the rear frame 433 to be elevating. At this time, the bracket 434 is provided for the coupling of the vertical link unit 860 as described above.

In the illustrated embodiment, the vertical link portion 860 includes a vertical extension portion 861 , a head portion 862 , a link connection portion 863 , and a return spring 864 .

The vertical extension part 861 connects the lifting frame 450 and the rotation link part 850 . The vertical extension portion 861 extends between the lifting frame 450 and the rotation link portion 850 . In the illustrated embodiment, the vertical extension portion 861 extends in the vertical direction.

The vertical extension portion 861 is coupled to the rear frame 433 so as to be liftable. Specifically, the vertical extension portion 861 is coupled to the rear frame 433 by a bracket 434 to be elevating. The vertical extension portion 861 may move upward or downward while being coupled to the bracket 434 .

The vertical extension portion 861 is coupled to the head portion 862 coupled to the lifting frame 450 . When the lifting frame 450 and the head portion 862 connected thereto are lifted, the vertical extension portion 861 may be lifted together with the head portion 862 .

The vertical extension part 861 is link-coupled to the link connection part 863 connected to the rotation link part 850 . The vertical movement of the vertical extension part 861 may be converted into rotation of the rotary link part 850 by the link connection part 863 .

The head part 862 connects the vertical extension part 861 and the lifting frame 450 . The head portion 862 is coupled to the vertical extension portion 861 and the lifting frame 450 , respectively.

The head part 862 may be moved in the vertical direction together with the lifting frame 450 . Accordingly, the vertical extension portion 861 connected to the head portion 862 may also be moved in the vertical direction.

The head portion 862 is elastically supported by a return spring 864 . Accordingly, the lifting frame 450 coupled to the head portion 862 may also be elastically supported by the return spring 864 .

The link connection part 863 connects the vertical extension part 861 and the rotation link part 850 . Specifically, the link connection part 863 is link-coupled to the vertical extension part 861 and the first link 852, respectively.

When the vertical extension part 861 moves in the vertical direction, the link connection part 863 moves in the vertical direction. Accordingly, the first link 852 connected to the link connection part 863 is rotated clockwise or counterclockwise. The rotation is converted into left-right movement of the limiting plate 820 by the link body 851 and the second link 853 .

The return spring 864 stores the restoring force for returning the head portion 862 and the lifting frame 450 connected thereto to the original position, that is, to the position before the connector 410 is pressed and moved downward.

The return spring 864 is deformed in shape as the jack is coupled to the connector 410 and the elevating frame 450 is moved downward, and may store restoring force.

In addition, when the jack is separated from the connector 410 , the stored restoring force is provided to the lifting frame 450 to return the lifting frame 450 to its original position.

In the illustrated embodiment, the return spring 864 is provided in the form of a coil spring. The return spring 864 may be provided in any form capable of storing a restoring force by shape deformation and providing the stored restoring force to another member.

In the illustrated embodiment, the return spring 864 extends in an up-down direction. The upper end of the return spring 864 is connected to the head portion 862 and the lifting frame 450 connected thereto, and elastically supports them. The lower end of the return spring 864 may be supported by any component provided in the mechanism structure 400 .

5. Description of the process in which the movement of the circuit breaker 20 is restricted or allowed according to an embodiment of the present invention

The circuit breaker assembly 1 according to an embodiment of the present invention may allow or limit the movement of the circuit breaker 20 coupled to the casing 10 according to a plurality of steps.

In particular, in the circuit breaker 20 according to an embodiment of the present invention, whether the jack and the connector 410 are coupled and whether the circuit breaker 20 moves is interlocked. Accordingly, in the state in which the jack is coupled, the circuit breaker 20 is arbitrarily separated from the casing 10 or is not moved.

As a result, the coupling state of the jack and the connector 410 is stably maintained, and damage and malfunction of the components of the circuit breaker 20 that may occur during arbitrary separation can be prevented. Accordingly, the operational reliability of the circuit breaker assembly 1 may be improved, the service life may be increased, and the operator's working convenience may be improved.

Hereinafter, again with reference to FIGS. 4, 6, and 21 to 26 , a process in which the circuit breaker 20 of the circuit breaker assembly 1 according to an embodiment of the present invention is coupled to the casing 10 and the movement is restricted will be described in detail. explain in detail.

(1) Description of the initial stage in which the circuit breaker 20 is coupled to the casing 10

Referring to FIG. 4 , the casing 10 in a state in which the circuit breaker 20 is separated is shown.

As described above, the circuit breaker 20 may be coupled to the casing 10 at various positions to be slidably moved.

That is, each of the wheel parts 720 is rotatably inserted into the plurality of guide rails 240 . In addition, the insertion guide part 730 is positioned above the guide part 250 , and its left and right sides are positioned to surround the left and right sides of the guide part 250 .

In addition, the lifting unit 810 is positioned above the rail unit 310 , and the insertion protrusion 815 is disposed to protrude toward the rail unit 310 .

At this time, the front side of the rail part 310 , that is, at an initial position where the circuit breaker 20 is coupled to the casing 10 , is provided with an inclined surface 320 that extends to the front side and is inclined downwardly.

Accordingly, the circuit breaker 20 , specifically, the lifting unit 810 may be guided by the inclined surface 320 and smoothly enter the rail unit 310 . Accordingly, the circuit breaker 20 can easily enter the accommodation space 130 .

(2) Description of one step in which the movement of the circuit breaker 20 is restricted and allowed

21 to 24 , the manipulation handle unit 740 and the lifting unit 810 provided in the circuit breaker 20 are illustrated.

The manipulation handle unit 740 is coupled to the body unit 710 to be movable in the vertical direction. In addition, one end of the manipulation handle unit 740 in the extending direction (a rear end in the illustrated embodiment) extends downward of the body unit 710 and is connected to the extension bar 811 .

Accordingly, the vertical movement of the manipulation handle unit 740 is linked with the vertical movement of the extension bar 811 and the insertion protrusion 815 coupled to the extension bar 811 .

When the manipulation handle unit 740 is operated to move upward, the extension bar 811 and the insertion protrusion 815 are also moved upward. Accordingly, the lower end of the insertion protrusion 815 is spaced apart from the upper surface 311 of the rail unit 310 .

In the above state, since the circuit breaker 20 and the rail part 310 are spaced apart from each other, the circuit breaker 20 may be moved in the direction in which it is inserted into or withdrawn from the casing 10 , and in the front-rear direction in the illustrated embodiment.

After the circuit breaker 20 is moved to a position for operating in the test mode and the driving mode, the operation handle part 740 is moved downward to maintain the position of the circuit breaker 20 .

As described above, the position where the insertion protrusion 815 is inserted into the first groove portion 331 can be defined as the test position, and the position where the insertion projection 815 is inserted into the second groove portion 332 can be defined as the driving position. As described above (see Fig. 6).

In addition, when the manipulation handle unit 740 is pressed upward, the lifting spring 816 is pressed and deformed to store the restoring force, and when the external force applied to the manipulation handle unit 740 is extinguished, the lifting spring 816 is inserted by the restoring force. The projection 815 and the operation handle portion 740 are also moved downward as described above.

In the above state, the circuit breaker 20 cannot be moved in the direction in which the insertion protrusion 815 and the locking groove 330 are coupled to each other in the direction to be inserted or drawn into the casing 10, in the illustrated embodiment, in the front-rear direction.

Accordingly, the occurrence of an accident that may be caused by the breaker 20 coupled to the casing 10 being moved arbitrarily can be prevented.

(3) Description of the different steps in which withdrawal of circuit breaker 20 is restricted and permitted.

25 and 26 , the mechanism structure 400 and the movement limiter 800 provided in the circuit breaker 20 are shown.

The elevating frame 450 is coupled to the frame 430 so as to be elevating in the vertical direction. In addition, the connector 410 and the connector fastening part 420 may be coupled to the lifting frame 450 to move vertically together with the lifting frame 450 .

The lifting frame 450 is connected to the vertical link unit 860 of the movement limiter 800 . In addition, the vertical link unit 860 is connected to the limiting plate 820 by the rotation link unit 850 .

Accordingly, when the lifting frame 450 is moved in the vertical direction, the limit plate 820 may be moved in the left and right directions to contact or separate from the blocking plate 340 .

In the following description, it is assumed that the circuit breaker 20 is disposed at or inside the position for operating in the test mode, that is, at a position where the circuit breaker 20 is further inserted into the casing 10 .

That is, it is assumed that the circuit breaker 20 is disposed at a position where it can come into contact with the rear side of the blocking protrusion 342 of the blocking plate 340 when the restriction plate 820 is moved.

When the jack is coupled to the connector 410 , the connector 410 and the lifting frame 450 connected thereto are moved downward. Accordingly, the vertical extension 861 connected to the lifting frame 450 is also moved downward.

Accordingly, by the link connection part 863 connected to the vertical extension part 861 , the lifting and lowering is converted into a rotational motion of the rotary link part 850 . The rotation link unit 850 is rotated in any one of a clockwise direction and a counterclockwise direction.

Accordingly, the limiting plate 820 connected to the second link 853 is moved toward the blocking plate 340, in the illustrated embodiment, toward the right.

Accordingly, when the jack is coupled to the connector 410 , the locking protrusion 828 of the limiting plate 820 overlaps the blocking protrusion 342 in the front-rear direction.

That is, the circuit breaker 20 may be moved in a direction toward the inside of the casing 10 (ie, the rear side), but does not move in a direction (ie, the front side) withdrawn from the casing 10 .

As a result, in a state in which the jack is coupled to the connector 410 , the circuit breaker 20 is not drawn out from the casing 10 .

In addition, when the connector 410 and the jack are separated, the connector 410 and the lifting frame 450 connected thereto are moved upward. Accordingly, the vertical extension portion 861 connected to the lifting frame 450 is also moved upward.

As described above, the restoring force for the movement may be provided by the return spring 864 .

Accordingly, by the link connection part 863 connected to the vertical extension part 861 , the lifting and lowering is converted into a rotational motion of the rotary link part 850 . The rotation link unit 850 is rotated in the other one of a clockwise direction and a counterclockwise direction.

Accordingly, the limiting plate 820 connected to the second link 853 is moved in a direction opposite to the blocking plate 340, in the illustrated embodiment, toward the left.

Accordingly, when the jack is separated from the connector 410 , the locking protrusion 828 of the limiting plate 820 is spaced apart from the blocking protrusion 342 in the front-rear direction.

That is, the circuit breaker 20 may be moved in a direction toward the inside of the casing 10 (ie, the rear side) or a direction drawn out from the casing 10 (ie, the front side).

As described above, in the circuit breaker assembly 1 according to the embodiment of the present invention, the initial coupling of the casing 10 and the circuit breaker 20 can be easily performed.

In addition, the circuit breaker assembly 1 according to the embodiment of the present invention is interlocked with whether the circuit breaker 20 is disposed at a position operated in a specific mode or whether the connector 410 and the jack are connected to the circuit breaker 20. Whether to move can be controlled.

Accordingly, the operational reliability of the circuit breaker assembly 1 can be improved, and safety accidents and product damage caused by erroneous operation and the like can be prevented.

Although the above has been described with reference to the preferred embodiment of the present invention, those of ordinary skill in the art can variously modify and change the present invention within the scope without departing from the spirit and scope of the present invention described in the claims below. You will understand that you can.

[Explanation of code]

1: Breaker assembly

10: casing

20: vacuum circuit breaker

100: base

110: horizontal plate

120: support member

130: accommodation space

200: vertical

210: first edition

220: second edition

230: reinforcing member

240: guide rail

241: first guide rail

242: second guide rail

250: guide unit

300: breaker coupling part

310: rail unit

311: upper surface

312: side

320: slope

330: locking groove

331: first groove

332: second groove

340: blocking plate

341: blocking extension

342: blocking protrusion

400: mechanism structure

410: connector

420: connector fastening part

421: side plate

421a: fastening hole

422: jam bar

430: frame

431: horizontal frame

432: vertical frame

433: rear frame

434: bracket

440: mechanism

450: elevating frame

500: block

510: first blocking unit

520: second blocking unit

530: third blocking unit

600: terminal part

610: first terminal unit

620: second terminal unit

630: third terminal unit

700: cart

710: body part

711: first support plate

711a: first guide groove (left and right)

711b: second guide groove (up and down)

712: second support plate

720: wheel part

730: insertion guide unit

740: operation handle unit

800: movement limiter

810: elevator

811: extension bar

811a: guide turn

812: shaft

813: support projection

814: guide bracket

814a: elevating guide groove

815: insertion protrusion

816: elevating spring

820: limit plate

821: first part

822: second part

823: mating groove

824: limiting protrusion

825: first moving home

826: second moving groove

827: pin insert

828: catch protrusion

840: fastening member

841: first fastening member

842: second fastening member

850: rotation link unit

851: link body

852: first link

853: second link

854: first connection part

855: second connection part

856: press pin

860: vertical link unit

861: vertical extension

862: head

863: link connection

864: return spring

h1: first height

h2: second height

l1: first length

l2: second length

Claims (14)

cart unit; a limiting plate movably coupled to the cart in a first direction and in a second direction opposite to the first direction; a rotation link unit rotatably coupled to the cart unit and linked to the limit plate; a vertical link portion coupled to the rotation link portion and extending in a third direction; and and a connector connected to the vertical link unit and moved together with the vertical link unit in the third direction and in a fourth direction opposite to the third direction, The limiting plate is When moving in any one of the first direction and the second direction, the cart part overlaps with a blocking plate located outside the fourth direction in a fifth direction, When moving in the other one of the first direction and the second direction, the blocking plate and the blocking plate are spaced apart along the fifth direction, breaker. According to claim 1, The blocking plate is a blocking extension extending in the fifth direction and having a predetermined height; and It is continuous with the blocking extension and includes a blocking protrusion formed to have a height longer than that of the blocking extension, The limiting plate is and a locking protrusion extending toward the blocking plate from one side facing the blocking plate, The end in the direction in which the locking protrusion extends is, Doedoe located higher than the height of the blocking extension, located lower than the height of the blocking projection, breaker. 3. The method of claim 2, When the connector is moved in the fourth direction and the rotation link unit is rotated, The blocking plate is moved in any one of the first direction and the second direction so that the blocking protrusion and the locking protrusion are arranged to overlap in the fifth direction, According to claim 1, The limiting plate is a first portion extending in the first direction and the second direction; a second portion continuous with the first portion and extending in the first direction and the second direction; and and an engaging groove partially surrounded by the first and second portions, wherein an operation handle portion movably coupled to the cart portion is accommodated; breaker. 5. The method of claim 4, The rotary link unit, and a pressing pin rotatably coupled to the limiting plate; The limiting plate is It is formed recessed in the outer periphery of the second portion, comprising a pin insertion portion in which the pressing pin is accommodated, breaker. According to claim 1, a frame positioned outside the cart part in the third direction and connected to the cart part, the vertical link part being movably coupled in the third direction and the fourth direction; and and a lifting frame coupled to the connector and coupled to the frame to be movable in the third direction and the fourth direction together with the connector, breaker. 7. The method of claim 6, The vertical link unit, a head unit connected to the elevating frame; a vertical extension part connected to the head part and extending between the lifting frame and the rotation link part; and Containing a link connecting portion respectively connected to the vertical extension portion and the rotary link portion, breaker. 8. The method of claim 7, The vertical link portion, and a return spring positioned outside the head part in the fourth direction to elastically support the head part, breaker. According to claim 1, The rotary link unit, a link body extending between the vertical link part and the limiting plate; a first link coupled to the link body and the vertical link unit, respectively; and and a second link coupled to the link body and the limiting plate, respectively, breaker. 10. The method of claim 9, The first link is Converting the movement of the vertical link portion to rotation of the link body, The second link is converting the rotation of the link body into movement of the limiting plate, breaker. The method of claim 1, and a fastening member for movably coupling the restriction plate to the cart unit, The limiting plate is a first portion extending in the first direction and the second direction; and and a second portion continuous with the first portion and extending in the first direction and the second direction, In any one or more of the first part and the second part, A moving groove extending in the first direction and the second direction to which the fastening member is coupled is formed, breaker. a casing with a space formed therein; and It is slidably coupled to the casing and includes a circuit breaker that is drawn into or drawn out into the space, The casing is a rail portion positioned below the retracted circuit breaker and extending in the front-rear direction; and It is located on one side in the width direction of the rail part, and extending in the front-rear direction, the height of the front end includes a blocking plate higher than the height of the rear end, the circuit breaker, a connector that is energably connected to an external control power source and is provided so as to be able to move up and down in the vertical direction; a vertical link unit extending in the vertical direction and connected to the connector to be lifted and lowered together with the connector; a rotary link unit coupled to the vertical link unit and rotated according to the elevation of the vertical link unit; and It is located on the upper side of the rail unit and is link-coupled with the rotating link unit, and includes a limiting plate that is moved to the left or right according to the rotation of the rotating link unit, The limiting plate is protruding toward the rail portion, the lower end of which is lower than the front end of the blocking plate and positioned higher than the rear end of the blocking plate, breaker assembly. 13. The method of claim 12, The circuit breaker is drawn into the casing from the front side of the casing, On the upper side of the rail part, a first groove portion positioned on the front side of the rail portion and having an open upper side; and It is located on the rear side of the rail part, and a second groove part with an open upper side is formed, the circuit breaker, an operation handle portion extending in the front side and movably coupled in the vertical direction; and and an insertion protrusion connected to the operation handle portion, lifted together with the operation handle portion, and inserted into the first groove portion or the second groove portion, breaker assembly. 14. The method of claim 13, the circuit breaker, a body portion slidably coupled to the casing and facing the rail portion; and It is provided on the body portion and includes a lifting spring for elastically supporting the insertion protrusion, When the operation handle portion is pressed upward, the lifting spring stores the restoring force, breaker assembly.

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