CN107706562B - Terminal block holding device - Google Patents

Abstract

a terminal block buckling device comprises a terminal block body and a buckling handle. The terminal block body includes a slot for inserting the circuit board and two through holes perpendicular to the slot. The buckling handle is arranged on the terminal block body and is provided with a force applying arm, a clamping part connected with one end of the force applying arm, a fulcrum connected with the other end of the force applying arm and an elastic arm arranged between the clamping part and the force applying arm. The clamping part moves to a locking state and a releasing state under the linkage action of the elastic arm so as to effectively increase the anti-drawing force between the clamping part and the circuit board.

Description

Terminal block holding device

technical field

The invention relates to a terminal block holding device, in particular to a terminal block holding device for simultaneously coupling circuit boards and cables (Board to Wires).

Background technique

Terminal Block (Terminal Block) is a common connection component, which has been widely used in industrial communication with increasingly large amount of information, industrial equipment with closer integration between equipment, and electric power to improve the reliability and safety of the power system. Industry, more highly automated industrial control and other fields. Terminal block is a kind of power line, control line and or data transmission line used to connect two or more groups. For example, in an industrial control system, such as power supplies, automatic power-off devices, servo motor drivers, etc., it is usually necessary to use dozens to hundreds of terminal blocks to achieve frequent replacement of product types, and at the same time There is free scheduling and automatic or manual production to achieve the purpose of efficient production of small batches and multiple specifications in the most suitable way.

There is an existing terminal block, one side of which is coupled to two or more sets of power lines, control lines or data transmission lines, and the other side is coupled to a board to wire terminal block of a circuit board for Such as signal transmission or power transmission and other purposes. However, the coupling between the above-mentioned terminal block and the circuit board is easily affected by vibration or other factors, so that the contact between the circuit board and the terminal block is poor, causing the two to loosen, or even detach and break the circuit, so that each node cannot work normally. .

In view of this, how to improve the pull-out resistance between the existing terminal block and the circuit board and maintain the stability and reliability of signal transmission or power transmission is the goal of the inventors to solve and improve the above-mentioned prior art.

Contents of the invention

One of the objectives of the present invention is to provide a terminal block retaining device that effectively increases the pull-out resistance.

Another object of the present invention is to provide a terminal block holding device that automatically holds the circuit board, saves labor and effectively shortens the force displacement.

To achieve the above purpose, the present invention provides a terminal block holding device, which holds a circuit board provided with at least one positioning hole. The terminal block holding device includes a terminal block body and a holding handle. The terminal block body includes a slot for inserting the circuit board, two through holes perpendicular to the slot, and a column arranged between the two through holes. The buckle handle is arranged on the terminal block body, and the buckle handle has a force applying arm, a locking part connected to one end of the force applying arm, a point connected to the other end of the force applying arm, and is arranged between the locking part and the force applying arm An elastic arm, wherein the locking part is moved to a locked state and a released state by the linkage action of the elastic arm.

Preferably, when the circuit board is inserted into the slot and collides with the locking part, the locking part moves from the released state to the positioning hole holding the circuit board in the locked state. When the terminal block body moves, the locking part moves from the locked state to the released state, so as to break away from the positioning hole.

Preferably, the above-mentioned buckle handle also has a neck connecting the above-mentioned locking part and the above-mentioned force arm, a guide hole formed on the neck, and one end of the neck is facing toward the opening of the slot. Extend a head.

Preferably, the locking portion is disposed on the lower edge of the head, and the locking portion further has an inclined surface corresponding to the opening direction of the slot.

Preferably, one end of the above-mentioned elastic arm is connected to the above-mentioned neck, and the other end is a free end, and the free end is arranged obliquely in a direction away from the above-mentioned force applying arm.

Preferably, the terminal block body further has a cylinder disposed between the two through holes, and the guide hole is used for inserting the cylinder so that the neck can relatively move along the cylinder.

Preferably, two corresponding platforms are respectively extended on the same side of the neck and the force-applying arm, and each of the platforms is arranged opposite to the above-mentioned through holes and abuts against the above-mentioned terminal block body in a position-limiting manner.

Preferably, the thickness of the neck portion is smaller than the width of the force applying arm.

Preferably, the length of the force applying arm is greater than the length of the elastic arm, and the shape of the force applying arm is slightly arc-shaped. One side of the force applying arm has a plurality of convex lines, and the other side has a reinforcing rib.

Preferably, the terminal block body is further provided with a fulcrum hole for accommodating the fulcrum.

Preferably, the above-mentioned fulcrum has a rod connected to the force-applying arm and a top connected to the rod, and the size of the top is larger than that of the rod.

Preferably, the cross-sectional shape of the top is a circle, and the shape of the fulcrum hole is a circular hole corresponding to the shape of the top.

Preferably, the present invention further includes a fixing plate covering and positioning the above-mentioned buckle handle.

Preferably, the side wall of the terminal block body further has a plurality of assembling columns parallel to a column between the two through holes, and the fixing plate is further provided with a plurality of assembling holes corresponding to each of the assembling columns.

Preferably, the above-mentioned terminal block body is composed of a plurality of support bases stacked on each other, and each support base is provided with a wire-setting chamber for accommodating a disk spring, a conductive terminal inserted in the above-mentioned slot, and a movable A pressing block against the disc spring.

The present invention also has the following effects, because the force application point of the present invention is located in the middle of the buckle handle, that is to say, one end of the force application arm, the fulcrum is fixed on the terminal block body, and the other end of the force application arm, the locking part can It moves together with the force arm to control the movement of the locking part to the release state (position). Therefore, in the process of operating the buckle handle, it can indeed achieve labor-saving, fast, and shorten the displacement of the force arm, effectively making the overall structure reach The effect of shrinkage and compactness can be applied to equipment with increasingly narrow spaces.

The elastic arm of the present invention is located between the engaging portion and the fulcrum, that is, above the force application arm. In a specific embodiment, the elastic arm obliquely abuts against the bottom of the terminal block body, so that the locking part of the buckle handle maintains a locked state (position) in the slot. When the force applying arm is moved toward the terminal block body by pressing or other suitable means, the locking part is driven to move from the locked state to the released state until it breaks away from the positioning hole of the circuit board. At this time, when the force of pressing the force-applying arm is released, the elastic arm returns elastically to drive the catch portion of the buckle handle to return from the released state (position) to the locked state (position).

In a specific embodiment, the locking part has a slope corresponding to the circuit board. When the circuit board is inserted into the slot and touches the locking part, the circuit board can smoothly pass over the slope and make the locking part move from the released state to the locked state. The positioning holes for holding the circuit board. Therefore, the present invention can automatically hold the circuit board by inserting the circuit board to increase the pull-out resistance, and can quickly and effortlessly separate from the circuit board by pressing the force-applying arm.

Description of drawings

FIG. 1 is an exploded view illustrating a terminal block holding device of the present invention.

FIG. 2 is a perspective view illustrating the buckle handle of the present invention.

FIG. 3 is a perspective view illustrating the terminal block holding device of the present invention.

FIG. 4 is a perspective view illustrating that the terminal block holding device of the present invention is coupled to a circuit board.

5 is a cross-sectional view illustrating the terminal block holding device of the present invention before being inserted into a circuit board.

FIG. 6 is a cross-sectional view illustrating the terminal block holding device of the present invention after being plugged into a circuit board.

7 is a cross-sectional view illustrating the terminal block holding device of the present invention before it is separated from the circuit board.

FIG. 8 is a cross-sectional view showing the terminal block holding device of the present invention separated from the circuit board.

【Description of main component symbols】

10 circuit boards;

20 positioning holes;

30 lead points;

100 terminal block holding device;

110 terminal block body;

112 pedestals;

114 disc springs;

116 line chambers;

118 conductive terminals;

120 pressing blocks;

122 sockets;

124 slots;

126 insertion ports;

128 through holes;

130 cylinders;

132 assembled columns;

134 fulcrum holes;

150 fixed plates;

152 assembly holes;

200 buckle handle;

202 locking part;

204 neck;

206 head;

208 guide holes;

210 elastic arm;

212 free ends;

214 platforms;

216 slopes;

220 pivots;

222 rods;

224 top;

230 force arm;

232 embossed;

234 ribs;

L locked state; and

R release state.

Detailed ways

The detailed description and technical content of the present invention are described below with accompanying drawings. However, the attached drawings are only for reference and illustration, and are not intended to limit the present invention.

Referring to FIGS. 1 to 5 , the present invention provides a terminal block holding device 100 for holding a circuit board 10 provided with at least one positioning hole 20 and a plurality of contact points 30 . The terminal block holding device 100 includes a terminal block body 110 and a holding handle 200 . The circuit board 10 shown in the figure includes but is not limited to a printed circuit board (PCB), a flexible circuit board (Flexible Print Circuit; FPC) or other suitable circuit boards. Each contact point 30 is preferably distributed on the corresponding two surfaces of the circuit board 10, and is used to electrically connect with the corresponding conductive terminal 118 in the terminal block body 110, and to connect with the cable inserted into the other side of the terminal block body 110 (not shown in the figure). ) to achieve the purpose of signal transmission or power transmission. The buckle handle 200 is preferably provided corresponding to the positioning hole 20 of the circuit board 10 and the number is two respectively. The following only takes a single buckle handle 200 as an example for illustration.

The terminal block body 110 includes a slot 124 for inserting the circuit board 10 , two through holes 128 perpendicular to the slot 124 , and a post 130 disposed between the two through holes 128 . As shown in FIG. 1 , FIG. 3 and FIG. 4 , the terminal block body 110 is composed of a corresponding number of stacked support bases 112 according to the number of cables to be coupled (not shown).

Each pedestal 112 made of plastic or other suitable materials is respectively provided with a wire-setting chamber 116 accommodating a disc spring 114, a conductive terminal 118 inserted in the slot 124 and a movable counter disc. A pressing piece 120 of type spring 114. One side of the pressing block 120 is provided with a wire insertion opening 122 communicating with the wire placement chamber 116 for inserting cables (not shown), wherein the disc spring 114 and the conductive terminal 118 are electrically connected to each other in the wire placement chamber 116. sexual contact. The internal structure and related operations of the terminal block body 110 are known in the art, and will not be repeated here.

The buckle handle 200, which is preferably integrally made of plastic or other suitable materials, is disposed on the terminal block body 110. The buckle handle 200 has a force applying arm 230, a locking part 202 connected to one end of the force applying arm 230, and a connecting force applying arm 230. The fulcrum 220 at the other end of the arm 230 , an elastic arm 210 disposed between the engaging portion 202 and the force applying arm 230 , and a guiding hole 208 sleeved on the cylinder 130 . The locking part 202 is moved to a locked state L and a released state R by the linkage action of the elastic arm 210 .

The terminal block body 110 also defines a fulcrum hole 134 for accommodating the fulcrum 220 . The fulcrum 220 has a rod portion 222 connected to the force applying arm 230 and a top 224 connected to the rod portion 222 . The dimensions of the top portion 224 are greater than the dimensions of the stem portion 222 . The section shape of the top 224 is a circle, and the shape of the fulcrum hole 134 is a circular hole corresponding to the shape of the top 224 to fix the fulcrum 220 in the fulcrum hole 134 .

When the guide hole 208 is sleeved on the column body 130 and the fulcrum 220 is assembled in the fulcrum hole 134 , one end of the elastic arm 210 is preferably abutted against the bottom end of the terminal block body 110 . At this time, the locking portion 202 of the buckle handle 200 is in the locked state L, as shown in FIG. 6 . In the embodiment shown in FIG. 1 , FIG. 3 and FIG. 4 , it further includes a fixing plate 150 covering and positioning the buckle handle 200 . The side wall of the terminal block body 110 also has a plurality of assembly columns 132 parallel to the columns 130, and the fixing plate 150 is provided with a plurality of assembly holes 152 opposite to each assembly column 132, so that the fixing plate 150 can fix the buckle handle 200 in the terminal block body 110 . Further, one side wall of each support base 112 is protruded with an assembly column 132, and the other side wall is formed with an assembly hole 152, so that each support base 112 is stacked on top of each other to form a terminal block body of a required length. 110.

In detail, the elastic arm 230 of this embodiment is located between the engaging portion 202 and the fulcrum 220 , that is, above the force applying arm 230 . In the embodiment shown in FIG. 4 , the elastic arm 230 obliquely touches the bottom of the terminal block body 110 , so that the locking portion 202 of the handle 200 maintains a locked state (position) L in the slot 124 . When the force arm 230 is moved toward the terminal block body 110 by pressing or other suitable means, the engaging portion 202 is driven to move from the locked state L to the released state R until it disengages from the positioning hole 20 of the circuit board 10 . At this time, when the force of pressing the force applying arm 230 is released, the elastic arm 230 returns elastically to drive the locking portion 202 of the buckle handle 200 to return from the released state (position) R to the locked state (position) L.

As shown in FIG. 1 and FIG. 2 , the buckle handle 200 also has a neck portion 204 connected between the locking portion 202 and the force application arm 230 . The neck 204 is preferably upright connected to the force application arm 230 and one end of the neck 204 extends toward the opening of the socket 124 (ie, the insertion opening 126 ) and a head 206 extends. The locking part 202 is arranged on the lower edge of the head 206, and the locking part 202 also has a slope 216 corresponding to the direction of the insertion port 126 of the slot 124, so that the circuit board 10 can smoothly cross the slope 216 and make the locking part 202 from The positioning hole 20 holding the circuit board 10 moves from the released state R to the locked state L, as shown in FIG. 6 .

One end of the elastic arm 210 is connected to the neck 204, and the other end is a free end 212. The free end 212 is inclined away from the force applying arm 230. The free end 212 of the terminal block remains in contact with the bottom end of the terminal block body 110 and is tilted (locked state L). The guide hole 208 is formed in the neck 204 , and is used for inserting and limiting the cylinder 130 so that the neck 204 moves relatively along the cylinder 130 . Therefore, since the guide hole 208 can relatively move along the post 130 , the engaging portion 202 can move in the slot 124 stably and reliably.

Corresponding two platforms 214 also extend on the same side of the neck 204 and the force arm 230 respectively, and each platform 214 is arranged opposite to each through hole 128 and abuts against the terminal block body 110 in a limitable position, wherein the thickness of the neck 204 is less than The width of the force arm 230 . In addition, the diameter of the through hole 128 near the head 206 is larger than the diameter of the through hole 128 near the neck 204 . That is to say, the size of the through hole 128 located below the terminal block body 110 is the same as that of the neck portion 204 , so that the displacement of the engaging portion 202 in the slot 124 is more stable and reliable.

Please also refer to FIG. 6, the length of the force applying arm 230 is greater than the length of the elastic arm 210, and the shape of the force applying arm 230 is slightly arc-shaped, so as to have a distance from the bottom end of the terminal block body 110 (not shown in the figure). ). One side of the force applying arm 230 has a plurality of convex grooves 232 for the operator to apply force; the other side has a reinforcing rib 234 to increase the strength of the force applying arm 230 .

The operation method of the terminal block holding device 100 of the present invention will be further described below, please refer to FIG. 5 to FIG. 8 . As shown in FIGS. 5 and 6 , when the circuit board 10 is inserted into the slot 124 from the insertion port 126 and touches the locking portion 202, the circuit board 10 can smoothly cross the slope 216 and move the locking portion 202 from the released state R to The holding positioning hole 20 in the locked state L. At this time, the conductive terminals 118 of the terminal block body 110 can be electrically connected to the conductive points 30 of the circuit board 10 . In this embodiment, the circuit board 10 can be automatically held by inserting the circuit board 10 , so as to effectively increase the pull-out force of the terminal block holding device 100 of this embodiment.

As shown in FIG. 7 and FIG. 8 , when the operator, for example, presses the force applying arm 230 and moves toward the terminal block body 110 , the force applying arm 230 and the neck 204 will drive the locking part 202 from locking in the slot 124 The state L moves to the release state R until it is out of the positioning hole 20 . At this time, the elastic arm 210 is pressed from the inclined state to form the state of parallel force applying arm 230 . When the operator releases the force applying arm 230 , the elastic arm 210 returns from the released state L to the locked state R because of the release of the elasticity. Therefore, during the operation of the terminal block holding device 100 of this embodiment, it is very convenient and fast to install or separate the circuit board 10 , and achieve the effect of saving labor and effectively shortening the force displacement.

Since the force application point of this embodiment is located in the middle of the buckle handle 200, that is to say, one end of the force application arm 230, the fulcrum 220 is fixed on the fulcrum hole 134 of the terminal block body 110, and the other end of the force application arm 230 is locked. The part 202 can move together with the force applying arm 230 to control the locking part 202 to move to the locked state L or the released state R. Therefore, in the process of operating the buckle handle 110, it is possible to save labor and shorten the displacement of the force-applying arm 230, effectively making the overall structure smaller and compact (tightening), and then it can be applied to equipment or systems in increasingly narrow spaces. middle.

To sum up, the embodiments disclosed herein should be regarded as illustrating the present invention rather than limiting the present invention. The scope of protection of the present invention shall be defined by the scope of the patent claims, including their legal equivalents, and not limited by the foregoing description.

Claims (11)

1. The utility model provides a terminal block detains holds device, detains and holds a circuit board that is equipped with at least a locating hole, its characterized in that this terminal block detains and holds the device and include:

A terminal block body including a slot for inserting the circuit board and two through holes perpendicular to the slot, a column being disposed between the two through holes, the terminal block body further having a supporting point hole; and

The buckling handle is arranged on the terminal block body and is provided with a force applying arm, a neck part connected with one end of the force applying arm, a head part connected with the neck part and extending towards the opening direction of the slot and a clamping part connected with the head part, the other end of the force applying arm is connected with a fulcrum, an elastic arm is arranged between the neck part and the force applying arm, the neck part is provided with a guide hole, the fulcrum is pivoted with the fulcrum hole, and the guide hole is used for the column body to be inserted and limited so that the neck part relatively moves along the column body;

when the circuit board is inserted into the slot and abuts against the clamping part, the clamping part moves from a release state to a locking state to hold the positioning hole of the circuit board, and when the force applying arm moves towards the terminal table body, the clamping part moves from the locking state to the release state to be separated from the positioning hole.

2. the apparatus of claim 1, wherein the engaging portion is disposed on a lower edge of the head portion, and the engaging portion further has an inclined surface corresponding to an opening direction of the slot.

3. The terminal block retaining device of claim 1, wherein one end of said resilient arm is connected to said neck portion and the other end is a free end, said free end being disposed in a direction away from said force applying arm.

4. The terminal block fastening device according to claim 1, wherein two corresponding platforms respectively extend from the same side of the neck portion and the force applying arm, and each platform is disposed opposite to each through hole and can be abutted against the terminal block body in a limited manner.

5. The terminal block retaining device of claim 1, wherein the thickness of the neck portion is less than the width of the force applying arm.

6. The apparatus of claim 1, wherein the length of the force arm is greater than the length of the elastic arm, and the force arm is formed in a substantially arc shape, and has a plurality of ribs on one side and a reinforcing rib on the other side.

7. The terminal block retaining device of claim 1, wherein the fulcrum has a rod portion connected to the force applying arm and a top portion connected to the rod portion, the top portion having a dimension greater than the rod portion.

8. the terminal block retaining device of claim 7, wherein said top section is circular in shape and said fulcrum hole is circular in shape corresponding to said top section.

9. the terminal block retaining device of claim 1, further comprising a retaining plate that covers and positions the retaining handle.

10. The apparatus of claim 9, wherein the sidewall of the terminal block body further has a plurality of assembling posts parallel to a post between the two through holes, and the fixing plate further has a plurality of assembling holes corresponding to the assembling posts.

11. the device of claim 1, wherein the terminal body is formed by stacking a plurality of supporting bases, each supporting base having a wire-receiving chamber for receiving a disc spring, a conductive terminal inserted into the slot, and a press-stopping block movably abutting against the disc spring.