JP2013165050A - Screwless terminal portion structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a screwless terminal base such that connection electric wire release tools provided for respective polarities can be mounted for the correct polarities when the screwless terminal base is assembled, the connection electrode release tools being electrically safe as products.SOLUTION: There is provided a structure of a screwless terminal base for multiple polarities which is formed by forming wall portions for partitioning off electric wire connection terminal portions of the respective polarities side by side in the side-by-side arrangement direction of the electric wire connection terminals, the structure being characterized in including mounting preventing means for connection electric wire releasing tool for another polarity that prevents a connection electric wire releasing tool for another polarity from being mounted on the electric wire connection terminal portion for one polarity.

Description

The present invention relates to a structure of a screwless terminal portion for connecting an electric wire, and more specifically, erroneously mounting a connecting wire releasing tool for releasing the connection of an electric wire connected to the screwless terminal portion to another pole. The present invention relates to a structure of a screwless terminal portion to be prevented.

As disclosed in Patent Document 1, as a general screwless terminal block, a main body having an insertion hole for an electric wire, a metal fitting folded into a U-shape accommodated inside the main body, and a metal fitting A terminal block having a leaf spring that is housed in a letter-shaped shape and presses an electric wire against the inner surface of a metal fitting is well known. In this terminal block, when the electric wire is inserted into the insertion hole of the main body, the electric wire slides between the leaf spring and the connection portion while being pressed against the connection portion of the metal fitting by the elastic force of the leaf spring. And an electric wire is hold | maintained in the state pressed by the connection part of the metal metal fitting by the leaf | plate spring.

When the electric wire is pulled out, as shown in FIG. 2 of Patent Document 1, by pushing the release button 40, the leaf spring pressing the conductive portion 51 is elastically deformed downward, and the conductive portion of the electric wire A gap is formed between 51 and the leaf spring 30, the lock by the leaf spring that has bitten into the electric wire is released, and the wire is pulled out. The release button 40 is provided in common for each pole as shown in FIG. 1 of Patent Document 1, and when the release button 40 is pushed in, the lock by the leaf spring of each pole is released.

In addition, as an example of a screwless terminal in which a release button is provided for each pole, Patent Document 2 discloses a terminal assembly 1 including release buttons 32 provided independently for each pole. In the terminal assembly 1, the pushing operation of the release button 32 provided on one pole does not affect the other pole. That is, when pulling out the electric wires connected to each pole of the terminal assembly 1, the connected electric wires can be pulled out by pushing the release button 32 for each pole.

JP 2000-182684 A JP 2004-14152 A

In such a screwless terminal block, when the polarity of the terminal to which the electric wire is connected is determined, if the polarity is connected incorrectly, there is a possibility that the connected load device or the like is electrically affected. That is, for example, when the electric wires are connected with different voltage electrodes and neutral electrodes, the connected load device may not operate or may fail. In addition, when signal lines are connected, there is a possibility that correct signal transmission cannot be performed. Therefore, it is conceivable to distinguish the release button of each pole in the screwless terminal block for each pole (for example, the release button is color-coded for each pole, or the polarity is displayed). If the mounting position on the base is wrong, there is a risk that the wiring will actually be wrong even if the wires are connected according to the polarity indication.

Therefore, the present invention solves the above-described problems, and when assembling the screwless terminal block, the connecting wire release tool provided for each pole can be attached to the correct pole, and the product is electrically It is an object of the present invention to provide a structure of a screwless terminal block having a safe connecting wire release tool.

The structure of the screwless terminal block provided with the connecting wire release tool according to the present invention is configured to solve the above-described problems,
The wall part separating the electric wire connecting terminal parts of each pole is a structure of a multipolar screwless terminal block formed by being juxtaposed in the juxtaposed direction of the electric wire connecting terminals,
It is characterized in that it is equipped with means for preventing attachment of a connecting wire release tool for other electrodes, which prevents the connecting wire release tool for other electrodes from being attached to the own electrode with respect to the wire connecting terminal part of the own electrode. Good.

According to such a configuration, when assembling the screwless terminal block, it is possible to provide a screwless terminal block structure including a connecting wire release tool having excellent electrical safety as a product without being assembled with different polarities. .

Further, the wearing prevention means includes
The wall portion separating the non-threaded terminal portion of the own pole and the unthreaded terminal portion of the other pole;
You may comprise by providing in the said connecting wire release tool itself.

According to such a configuration, it is not necessary to provide a new additional component in addition to the components constituting the original screwless terminal block, and it is not necessary to configure the mounting prevention means, and the screwless terminal provided with the connection wire release tool at low cost. A platform structure can be provided.

In addition, when arranging the connecting wire release tool for other poles on its own pole side,
First mounting preventing means provided on the wall;
A second mounting preventing means provided in the connection wire release tool,
By abutting interference,
The connecting wire release tool for the other electrode may be prevented from being attached to the own electrode side.

According to such a configuration, when assembling the screwless terminal block, it is clearly understood that it is in a state where a connecting wire releaser that is not suitable for its own pole is attached, and an error in assembling with a different polarity is made. It can be reduced as much as possible.

In addition, the first mounting preventing means provided on the wall portion includes a wall recess formed in the wall portion,
When connecting the connection wire release tool for other poles to the specified position of the connection wire release tool for the own pole,
A contact interference portion as a second mounting preventing means that contacts and interferes with the wall recess is formed,
The connecting wire release tool for the other electrode may be prevented from being attached to the own electrode side.

According to such a configuration, the concave portion is formed in the wall portion, and the connection wire release tool is provided with the wall portion concave portion and the contact interference portion, so that the connection wire release device for the other electrode can be surely secured with a simple configuration. It can be prevented from being mounted on the pole side.

In addition, the first mounting preventing means provided on the wall portion includes a wall protruding portion formed on the wall portion,
When connecting the connection wire release tool for other poles to the specified position of the connection wire release tool for the own pole,
A contact interference part as a second mounting preventing means that contacts and interferes with the wall projecting part is formed,
The connecting wire release tool for the other electrode may be prevented from being attached to the own electrode side.

According to such a configuration, the projecting portion is formed on the wall portion, and the connecting wire release tool is provided with the wall projecting portion and the abutting interference portion, so that the connecting wire release device for the other electrode can be surely provided with a simple configuration. Can be prevented from being attached to the self-polar side.

In addition, when connecting the self-polarizing connection wire release tool to the predetermined position,
Protrusions or recesses are formed at locations that do not interfere with the first mounting preventing means provided on the wall,
You may comprise as a characteristic that mounting | wearing to the self-polar side is permitted.

According to such a configuration, when the connecting wire release tool is suitable for its own pole at the time of assembly, as described above, the components can be mounted at a predetermined position without causing interference with each other. The terminal block can be manufactured without increasing the number of terms.

As described above, according to the present invention, at the time of assembling the screwless terminal block, the connecting wire release tool provided for each pole can be attached to the correct pole, and the erroneous connection of the wires due to the assembly error is suppressed. It is possible to provide a structure of a screwless terminal block having an electrically safe connecting wire releaser as a product.

The external appearance block diagram of the screwless terminal block which shows 1st embodiment of this invention is shown. Explanatory drawing when the case of a terminal block is removed is shown. The positional relationship of the connection electric wire release tool and wall part in a case is shown. The internal explanatory drawing of the screwless terminal block which shows 2nd embodiment is shown. The internal explanatory drawing of the screwless terminal block which shows 3rd embodiment is shown. The screwless terminal block in a prior art example is shown. The screwless terminal block in a prior art example is shown.

1st Embodiment of the structure of the screwless terminal block provided with the connection wire release tool of this invention is described using FIGS. 1-3.

(First embodiment)
FIG. 1 shows an external configuration diagram of a screwless terminal block 1 provided with a connecting wire release tool. The screwless terminal block 1 provided with the connection wire release tool is configured such that the outer shell of the container body is a combination of a case A10, a case B11, and a case C12. Is sandwiched between the case A10 and the case B11.

The vessel body is formed in a substantially rectangular parallelepiped shape, and on one surface a side of the vessel body, an insertion hole for the electric wires (electric wire insertion holes 20 and 21) is arranged in parallel in the direction in which the terminals are arranged. In addition, the terminal is formed in a direction substantially perpendicular to the parallel arrangement direction of the terminals toward the inside of the container. A terminal plate that is electrically connected to the electric wire inserted from the electric wire insertion hole is disposed on the side of the surface b facing the surface a. On the surface c side of the vessel body, connection wire release tools 30 and 31 that are pressed when the connected wires are removed to release the connection of the wires are formed by exposing the operation portion to the outside of the vessel body.

In FIG. 2, the external view when case A10 and case B11 are removed is shown in the container body of the screwless terminal block 1 provided with the said connection wire release tool. The container has a structure in which each pole is insulated in the parallel arrangement direction of the terminals by the wall portion of the case C12. In each of the poles, one of the poles corresponding to the wire insertion hole 20 is provided with a screwless terminal to which the wire inserted from the wire insertion hole 20 is connected and a connection wire release tool 30, and the wire insertion hole 21. The other pole corresponding to is provided with a screwless terminal to which an electric wire inserted from the electric wire insertion hole 21 is connected and a connection electric wire release tool 31.

Next, the front side terminal portion insulated by the wall portion of the case C12 will be described. The screwless terminal to which the electric wire is connected is formed of a metal terminal fitting 50 having a terminal plate 51 which is bent and formed in a substantially U shape when viewed from the insertion hole side of the electric wire and is connected to the outside at one end, It is comprised from the chain | strand-shaped spring 40 which is arrange | positioned inside the U-shape of the terminal metal fitting 50, and presses the inserted electric wire inside the U-shape of the said metal fitting. Both end portions of the chain spring 40 are inclined in the inner direction of the vessel body. Among them, the one end portion 40a located on the inner side is formed so as not to be caught on the core wire of the electric wire when the tip is folded back and the electric wire is removed. The other end portion 40b located outside is not folded back, and when a force is applied in the direction of pulling out the wire, it is displaced into the core wire and elastically displaced in the direction in which the chain spring spreads. Has a stopping action.

The gap between the chain spring 40 and the U-shaped inner side of the terminal fitting 50 is configured to be narrower than the diameter of the core wire of the electric wire. When connecting an electric wire to the screwless terminal, the core wire of the electric wire inserted from the electric wire insertion holes 20 and 21 is inserted into the gap between the U-shaped inner side of the metal fitting 51 and the chain spring 40. At the same time, the chain spring is bent in a contracting direction, and the core of the electric wire is inserted into the inside of the terminal fitting 50 while being pressed inside the U-shape by the restoring elastic force of the chain spring. When inserted to a predetermined position, the core wire is connected to and held by the terminal fitting by the elastic force of the chain spring 40.

In FIG. 2, the connection wire release tool 30 is disposed above the end portion 40 b of the chain spring 40. When the electric wire is pulled out, the connecting wire release tool 30 is operated to be pushed downward to abut against the end portion 40b of the chain spring 40, and from the state where the core wire of the electric wire is connected and held. Bend to shrink. When the force that presses the electric wire to the inside of the U-shape of the metal fitting 50 decreases and is pressed to the extent that the cord does not bite into the core wire, the action of preventing the electric wire from being pulled out by the end portion 40b of the chain spring 40 is obtained. Finally, you can unplug the wires. In addition, it is the same structure also about the terminal part of the back side insulated by the wall part of the said case C12 in FIG.

Next, the structure of the mounting preventing means for preventing the other-pole connecting wire release tool from being mounted on the own electrode with respect to the own-electrode electric wire connecting terminal portion will be described with reference to FIG.

FIG. 3A shows the positional relationship between the connecting wire releasing tool and the wall portion in each case when the case A10, the case B11, and the case C12 are normally combined, and the connecting wire releasing in FIG. It is principal part sectional drawing seen from the arrow direction in the AA of the screwless terminal block structure 1 provided with the tool. FIG. 3B is a view showing the positional relationship of the connection wire releaser 30 with respect to the case C12 and the positional relationship of the connection wire releaser 31 with respect to the case B11. For the description of the mounting prevention means, the side of the connection wire release tool 30 is the self-polar side, and the side of the connection wire release tool 31 is the other pole side.

First, the form comprised as a mounting | wearing prevention means from the recessed part provided in the wall part of the case, and the protrusion part provided in the connection electric wire release tool is demonstrated.
In the wall portion of the case C12 on the own pole side, a wall recess 121 as a first attachment preventing means is formed at the place where the connection electrode release tool 30 on the own pole side is arranged. In addition, the connection wire releaser 30 on the own pole side is formed with a protruding portion 302 of the connection wire releaser at a position corresponding to the wall recess of the case C12. On the own pole side, the protrusion 302 is formed in the vicinity of the substantially central portion of the connection wire release tool 30 in the wire insertion direction of the container.

The length of the protrusion 302 is set so as to fit within the depth of the recess of the wall recess 121, and the size of the gap between the connection wire release tool 30 and the case A10 and the case C12 is as follows. It is provided smaller than the length of the protrusion 302. In addition, the shape of the said wall part recessed part 121 is long and thin so that the displacement of the said protrusion part 302 which follows the displacement when pushing in the connection electric wire release tool 30 at the time of extraction of an electric wire may be avoided.

A wall concave portion 111 is formed in the wall portion of the case B11 on the other pole side at a place where the connection wire release tool 31 on the other pole side is disposed. Further, the connecting wire releasing tool 31 on the other pole side is formed with a protruding portion 312 of the connecting wire releasing tool as the second mounting preventing means at a position corresponding to the concave portion of the wall portion of the case B11.

Similarly to the protrusion 302, the length of the protrusion 312 is provided so as to fit into the depth of the recess of the wall recess 111, and the connection wire release tool 31, the case B11, and the case The size of the gap with C12 is set smaller than the length of the protrusion 312. In addition, the shape of the said wall part recessed part 111 is long and thin so that the displacement of the said protrusion part 312 following the displacement when pushing in the connection electric wire release tool 31 at the time of extraction of an electric wire may be avoided.

The protruding portion 312 on the other pole side is a portion deviated from the substantially central portion of the connection wire release tool 31 in the wire insertion direction of the container body, and from the position where the wall recess portion 121 in the case C12 is provided. The protrusion 301 is formed in the biased portion.

Now, when the connecting wire release tool 31 on the other pole side is attached instead of the connection wire release tool 30 on the own pole side, the protruding portion 312 of the connection wire release tool 31 is formed as a second attachment preventing means. The position does not correspond to the formation position of the wall recess 121 as the first mounting preventing means on the self-polar side. That is, the protrusion 312 does not enter the wall recess 121, and the protrusion 312 contacts and interferes with the wall surface of the case C12. Accordingly, when the case C12 is combined with the case A10, the connection wire release tool 31 is sandwiched between the cases, and the case A10 cannot be completely combined with the case C12.

In this way, when assembling a screwless terminal block equipped with a connection wire release tool, it can be recognized when the terminal block is assembled that the connection wire release tool 31 on the other pole side has been mistakenly assembled, It is possible to provide a screwless terminal block provided with a safe connection wire release tool.

(Second embodiment)
In the second embodiment, the positional relationship between the concave portion and the protruding portion in the first embodiment described above is changed. That is, the wall protrusions 122 and 112 are formed in the case C12 and the case B11, while the connection wire releasers 30 and 31 are formed with the recesses 303 and 313 at positions corresponding to the wall protrusions. is there. With reference to FIG. 4, the structure of the mounting preventing means for preventing the connecting electrode releasing tool for the other electrode from being mounted on the own electrode with respect to the own electrode electric wire connecting terminal portion will be described.

FIG. 4A is a diagram showing the positional relationship between the connecting wire releaser and the wall portion in each case when the case A10, the case B11, and the case C12 are normally combined and configured as in FIG. It is principal part sectional drawing seen from the arrow direction in the AA line of the screwless terminal block structure 1 provided with the connection electric wire release tool in 1. FIG. FIG. 4B is a diagram showing the positional relationship of the connection wire release tool 30 with respect to the case C12 and the positional relationship of the connection wire release tool 31 with respect to the case B11. For the description of the mounting prevention means, the side of the connection wire release tool 30 is the self-polar side, and the side of the connection wire release tool 31 is the other pole side.

First, the form comprised as a mounting | wearing prevention means from the wall part protrusion part provided in the wall part of the case and the recessed part provided in the connection electric wire release tool is demonstrated.
On the wall portion of the case C12 on the own pole side, a wall projection 122 as a first attachment preventing means is formed at the place where the connection wire release tool 30 on the own pole side is disposed. Further, the connection wire release tool 30 on the own pole side is formed with a recess 303 of the connection wire release tool at a position corresponding to the protruding portion of the wall portion of the case C12. On the own pole side, the concave portion 303 is formed in the vicinity of the substantially central portion of the connection wire release tool 30 in the wire insertion direction of the container.

Further, the length of the wall protruding portion 122 is provided so as to fit into the depth of the concave portion 303, and the size of the gap between the connecting wire releaser 30 and the case A10 and the case C12 is set as the protruding portion. It is smaller than the length of 122. In addition, the shape of the said recessed part 122 is long and thin so that it may not contact | abut on the wall part protrusion part 122, when pushing in the connection electric wire release tool 30 at the time of extraction of an electric wire.

A wall protrusion 112 is formed on the wall of the case B11 on the other pole side at the place where the connection wire release tool 31 on the other pole side is disposed. Further, the connecting wire releasing tool 31 on the other pole side is provided with a recessed portion 313 of the connecting wire releasing tool as the second mounting preventing means at a position corresponding to the wall recessed portion of the case B11.

Similarly to the protruding portion 302, the length of the wall protruding portion 112 is provided so as to fit into the depth of the recess of the recessed portion 313, and the connection wire release tool 31, the case B11, and the case The size of the gap with C12 is set smaller than the length of the wall protrusion 112. In addition, the shape of the said recessed part 313 is long and thin so that it may not contact | abut to the wall part protrusion part 112, when pushing in the connection electric wire release tool 31 at the time of extraction of an electric wire.

The concave portion 313 of the connection wire release tool 31 on the other pole side is a portion deviated from the substantially central portion of the connection wire release tool 31 in the wire insertion direction of the container, and the wall protruding portion in the case C12 It is provided in a portion deviated from the position where 122 is provided.

When the connecting wire release tool 31 on the other pole side is attached instead of the connection wire release tool 30 on the own pole side, the formation position of the recess 313 of the connection wire release tool 31 as the second attachment preventing means. However, it does not correspond to the formation position of the wall protrusion 122 as the first mounting preventing means on the self-polar side. That is, the protrusion 122 does not enter the recess 313, the protrusion 122 abuts against the side surface of the connection wire release tool 31, and covers the cover A about the length of the protrusion 122 when the cover A10 is combined with the cover C12. Comes up. Accordingly, when the case C12 is combined with the case A10, the connection wire release tool 31 is sandwiched between the cases, and the case A10 cannot be completely combined with the case C12.

In this way, when assembling a screwless terminal block equipped with a connection wire release tool, it can be recognized when the terminal block is assembled that the connection wire release tool 31 on the other pole side has been mistakenly assembled, It is possible to provide a screwless terminal block provided with a safe connection wire release tool.

(Third embodiment)
In the third embodiment, the first embodiment and the second embodiment described above are combined. That is, while the wall recesses 121 and 111 and the wall protrusions 122 and 112 are formed in the case C12 and the case B11, the connection wire release tools 30 and 31 correspond to the wall recesses and the wall protrusions, respectively. Projections 302 and 312 and recesses 303 and 313 are formed at positions. With reference to FIG. 5, the structure of the mounting preventing means for preventing the connecting electrode release tool for the other electrode from being mounted on the own electrode with respect to the own-electrode electric wire connecting terminal portion will be described.

FIG. 5A shows the positions of the connecting wire releasing tool and the wall portion in each case when the case A10, the case B11, and the case C12 are normally combined and configured as in FIGS. It is principal part sectional drawing which looked at the relationship from the arrow direction in the AA line of the screwless terminal block structure 1 provided with the connection wire release tool in FIG. FIG. 5B is a diagram showing the positional relationship of the connection wire release tool 30 with respect to the case C12 and the positional relationship of the connection wire release tool 31 with respect to the case B11. For the description of the mounting prevention means, the side of the connection wire release tool 30 is the self-polar side, and the side of the connection wire release tool 31 is the other pole side.

On the wall portion of the case C12 on the own pole side, a wall recessed portion 121 and a wall protruding portion 122 are formed as a first mounting preventing means at a place where the connected electrode release tool 30 on the own pole side is disposed. In addition, the connection wire release tool 30 on the own pole side has a protrusion 302 of the connection wire release tool formed at a position corresponding to the wall recess of the case C12, and a position corresponding to the wall protrusion of the case C12. In FIG. 5, a recess 303 of the connecting wire release tool is formed. On the own pole side, the protrusion 302 is formed in the vicinity of the substantially central portion of the connection wire release tool 30 in the wire insertion direction of the container.

Further, the length of the protruding portion 302 is set so as to fit into the depth of the recess of the wall recess 121, and the length of the wall protruding portion 122 is set to fit into the depth of the recess 303. Is provided. In addition, the size of the gap between the connecting wire release tool 30 and the case A10 and the case C12 is provided smaller than the length of the protruding portion 302 and is set smaller than the length of the protruding portion 122. In addition, the shape of the said wall part recessed part 121 and the shape of the said recessed part 122 are the displacement of the said protrusion part 302 and the shape of the wall part protrusion part 122 which follow the displacement when pushing in the connection electric wire release tool 30 at the time of extraction of an electric wire. The shape is long and narrow so that it can be avoided.

On the wall portion of the case B11 on the other pole side, a wall recess portion 111 and a wall protrusion portion 112 are formed at a place where the connection electrode release tool 31 on the other pole side is disposed. Further, the connecting wire releasing tool 31 on the other pole side is formed with a protruding portion 312 and a recessed portion 313 of the connecting wire releasing tool as the second mounting preventing means at a position corresponding to the wall recessed portion of the case B11.

Similarly to the protrusion 302, the length of the protrusion 312 is provided so as to fit into the depth of the recess of the wall recess 111, and the length of the wall protrusion 112 is the length of the recess 313. It is provided so as to fit into the depth of the recess.
In addition, the size of the gap between the connection wire release tool 31 and the case B11 and the case C12 is provided smaller than the length of the projecting portion 312 and smaller than the length of the wall projecting portion 112. In addition, the shape of the said wall part recessed part 111 and the shape of the said recessed part 313 are the shape of the displacement of the said protrusion part 312 and the shape of the wall part protrusion part 112 which follow the displacement when pushing in the connection electric wire release tool 31 at the time of extraction of an electric wire. The shape is long and narrow so that it can be avoided.

The protruding portion 312 and the recessed portion 313 of the connection wire release tool 31 on the other pole side are portions that are deviated from the substantially central portion of the connection wire release tool 31 in the wire insertion direction of the container, and in the case C12. It is provided in a portion deviated from the position where the wall recess 121 is provided and the position where the wall protrusion 122 is provided.

Now, when the connecting wire release tool 31 on the other pole side is attached instead of the connection wire release tool 30 on the own pole side, the protruding portion 312 of the connection wire release tool 31 is formed as a second attachment preventing means. In addition to the fact that the position does not correspond to the formation position of the wall recess 121 as the first mounting preventing means on the own pole side, the formation position of the recess 313 of the connecting wire release tool 31 is the same as that on the own pole side. It does not correspond to the formation position of the protrusion 122.
That is, the protrusion 312 does not enter the wall recess 121, and the protrusion 312 contacts and interferes with the wall surface of the case C12. Further, the protrusion 122 does not enter the recess 313, and the protrusion 122 abuts on and interferes with the side surface of the connection wire release tool 31.
For this reason, when the cover A10 is combined with the cover C12, the cover A is lifted by the length of the protrusion 122.
Accordingly, when the case C12 is combined with the case A10, the connection wire release tool 31 is sandwiched between the cases, and the case A10 cannot be completely combined with the case C12.

In this way, when assembling a screwless terminal block equipped with a connection wire release tool, it can be recognized when the terminal block is assembled that the connection wire release tool 31 on the other pole side has been mistakenly assembled, It is possible to provide a screwless terminal block provided with a safe connection wire release tool.

In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

For example, in the third embodiment described above, the wall recess 111, the protrusion 312, the wall protrusion 112, and the recess can be used as a modification that makes it impossible to dispose the connecting wire release tool 31 on the other pole side on the own pole side. The thing which eliminated 313 can be considered. In this modification, when it is going to arrange | position the connection electric wire release tool 31 of the other pole side on the own pole side, the side part of the connection electric wire release tool 31 contact | abuts to the protrusion part 122 in an own pole side, and appropriate arrangement | positioning is carried out. Be disturbed. On the other hand, when it is going to arrange | position the connection electric wire release tool 30 of the own pole side on the other pole side, the protrusion part in the connection electric wire release tool 30 of the own pole side contacts case B11 in the other pole side, and appropriate arrangement | positioning Is disturbed. Thus, you may comprise by changing the combination of the protrusion part and recessed part in the connection electric wire release tool in 3rd embodiment, and the protrusion part and recessed part in a case.

As another modified example, in the third embodiment, the connecting wire releaser and the case may be formed by changing the length of the protrusion and the depth of the recess. In this case, it is possible to arrange the protrusions and the recesses at the same position without providing the positions where the protrusions and the recesses are deviated in the electric wire insertion direction.

1 Screwless terminal block with connecting wire release tool 10 Case A
11 Case B
12 Case C
20 Wire insertion hole 21 Wire insertion hole 30 Connection wire release tool 31 Connection wire release tool 301 Chain spring pressing portion 40 Chain spring 50 Metal fitting 60 Electric wire 111 Wall recess 121 Wall recess 312 Projection 302 Projection 313 Wall recess 303 Wall recess 112 Projection 122 Projection

Claims (6)

The wall part separating the electric wire connecting terminal parts of each pole is a structure of a multipolar screwless terminal block formed by being juxtaposed in the juxtaposed direction of the electric wire connecting terminals,
It is characterized in that it is provided with means for preventing attachment of a connecting wire release tool for other electrodes, which prevents the connecting wire release tool for other electrodes from being attached to the own electrode with respect to the wire connecting terminal part of the own electrode. Screwless terminal block structure with connecting wire release tool. The wearing prevention means includes
The wall portion separating the non-threaded terminal portion of the own pole and the unthreaded terminal portion of the other pole;
The screwless terminal block structure provided with the connection wire release tool according to claim 1, which is provided on the connection wire release device itself. When arranging the connecting wire release tool for other poles on its own pole side,
First mounting preventing means provided on the wall;
A second mounting preventing means provided in the connection wire release tool,
By abutting interference,
3. The screwless terminal block structure having a connection wire release tool according to claim 2, wherein the connection wire release tool for the other electrode is prevented from being attached to the self-electrode side. While the first mounting preventing means provided on the wall portion includes a wall recess formed in the wall portion,
When connecting the connection wire release tool for other poles to the specified position of the connection wire release tool for the own pole,
A contact interference portion as a second mounting preventing means that contacts and interferes with the wall recess is formed,
4. The screwless terminal block structure having a connection wire release tool according to claim 3, wherein the connection wire release tool for the other electrode is prevented from being mounted on the own electrode side. While the first mounting preventing means provided on the wall portion comprises a wall protruding portion formed on the wall portion,
When connecting the connection wire release tool for other poles to the specified position of the connection wire release tool for the own pole,
A contact interference part as a second mounting preventing means that contacts and interferes with the wall projecting part is formed,
4. The screwless terminal block structure having a connection wire release tool according to claim 3, wherein the connection wire release tool for the other electrode is prevented from being mounted on the own electrode side. When connecting the self-polarization connection wire release tool to the specified position of the self-polarization connection wire release tool,
Protrusions or recesses are formed at locations that do not interfere with the first mounting preventing means provided on the wall,
The screwless terminal block structure provided with the connecting wire releaser according to any one of claims 3 to 5, wherein the terminal block structure is allowed to be mounted on a self-polar side.

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