JP2010277732A - Terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal device having improved assembling workability without increasing the number of members when plurally installed. <P>SOLUTION: The terminal device 1 includes a case 2, a quick connection terminal 17, and first and second extension pieces 44, 45. The case 2 is formed of an insulating material in an approximately rectangular box shape, and includes one or more insertion holes 51 passing therethrough. The quick connection terminal 17 includes locking springs 3 arranged in the case 2 in opposition to the insertion holes 51 so that wires inserted through the insertion holes 51 are connected thereto. The first and second extension pieces 44, 45 are formed of conductive materials into rectangular plate shapes while extending from both longitudinal ends of the case 2 to the outside in parallel to the bottom of the case 2. The first and second extension pieces 44, 45 are electrically connected to the quick connection terminal 17 in the case 2. The first and second extension pieces 44, 45 have hole portions 9 through which screws are inserted. The first extension piece 44 is arranged nearer the bottom of the case 2 by an equivalent of the thickness of the second extension piece 45, than the second extension piece 45. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a so-called quick-connect terminal device that connects electric wires without using screws.

2. Description of the Related Art Conventionally, a so-called quick-connect terminal device that can connect electric wires without using screws has been provided. And this type of terminal device is installed in a distribution board installed indoors such as a house, for example, and electrically through a ground terminal and an electric wire of a power outlet distributed from each branch breaker of the distribution board. By connecting, the electrical equipment connected to the power outlet is grounded.

As an example of such a terminal device, there is one described in Patent Document 1, and the terminal device 80 is shown in FIGS. As shown in FIG. 5, the terminal device 80 includes a case 81, a quick connection terminal 84 (not shown in FIG. 5), and a pair of extending pieces 85 and 85.

As shown in FIG. 5, the case 81 is formed in a substantially rectangular box shape as a whole by an insulating material, and is formed in a box-shaped upper case 82 having an opening on one side and an elongated rectangular plate shape, and the upper case 82.
And a lower case 83 which is a bottom portion of the case 81 attached so as to close the opening. In addition, four insertion holes 82b are provided in the upper wall portion 82a of the upper case 82 so as to penetrate the upper case 82.
The left and right wall portions 82c and 82d are respectively provided with recesses 82e (shown only on the left wall portion 82c side) that are recessed upward.

As shown in FIG. 6, the quick connection terminal 84 has four lock springs 84a (only one is shown in FIG. 6).
And a terminal plate 84b. The lock spring 84a widens the distance between the central piece 84c, which is the central portion of the strip formed of an electrically conductive material having elasticity, and the central piece 84c by bending one end of the strip into an approximately L shape. In this way, the locking piece 84d is inclined, and the other end portion of the band plate is bent into a substantially S shape, so that the pressing piece 84e is elastic in the thickness direction of the central piece 84c. The terminal plate 84b is formed in a U-shape that opens upward when viewed from the front of FIG. 6 using a conductive material, and is connected by a connecting piece 84f formed in a rectangular plate shape and the connecting piece 84f. The terminal piece 84g and the contact piece 84h are opposed to each other.

As shown in FIG. 6, the four lock springs 84a abut the center piece 84c against the contact piece 84h of the terminal plate 84b, and connect the lock piece 84d and the pressing piece 84e to the terminal piece 84g of the terminal plate 84b. The contact piece 84h and the terminal piece 84g so as to face the four insertion holes 82b.
Between.

As shown in FIG. 5, the pair of extending pieces 85, 85 are formed in a flat rectangular plate shape with a conductive material, and extend outward in parallel with the lower case 83 through the recess 82 e of the upper case 82. And is electrically connected to the quick connection terminal 84 in the case 81. Each of the pair of extending pieces 85, 85 has a hole 85a through which a screw 86 is inserted. A nut (not shown) in which a screw hole (not shown) is formed facing the hole 85a is embedded in the lower case 83, and two screws 86 that pass through the holes 85a and 85a are embedded. , 86 are screwed into the screw holes, so that the extension pieces 85, 85 and the lower case 83 are fixed.

As shown in FIG. 7, the terminal device 80 is attached, for example, in the vicinity of the branch breaker 88 in the distribution board 87. As shown in FIG. 6, one end of the electric wire 89 is inserted into the insertion hole 82 b, and the other end (not shown) is the ground of the power outlet (not shown) corresponding to each branch breaker 88. Connected to the terminal. One end portion of the electric wire 89 inserted at this time is pressed and urged to the terminal piece 84g of the terminal plate 84b by the pressing piece 84e of the lock spring 84a.
The electric wire 89 and the quick connection terminal 84 are electrically connected. Further, the electric wire 89 is locked and connected to the quick connection terminal 84 by the leading end of the locking piece 84d of the locking spring 84a biting into the one end and locking. Therefore, the terminal device 80 can connect the electric wire 89 without using a screw,
Excellent wiring workability.

By the way, the terminal device 80 is provided with four lock springs 84a per one, and there is one lock spring 84a corresponding to one branch breaker 88. For example, if there are twelve branch breakers 88 arranged in the distribution board 87, it is necessary to attach a maximum of three terminal devices 80. When a plurality of terminal devices 80 are mounted in the distribution board 87 in this way, the terminal device 80 has the longitudinal directions of the cases 81 facing each other in the left-right direction, as shown in FIG. They are juxtaposed in the left-right direction with the ends joined together. At this time, the adjacent extended pieces 85, 8
The connecting plate 9 is formed in a rectangular plate shape from a conductive material by two screws 86, 86 respectively inserted through 5.
Adjacent terminal devices 80 are connected to each other by screwing zero. And all the adjacent terminal devices 80 are connected by the connection plate 90, so that the quick connection terminals 84 in all the terminal devices 80 are electrically connected through the extension piece 85 and the connection plate 90. . still,
A ground wire (not shown) is connected to any one of the extending pieces 85 among the plurality of terminal devices 80 described above.
6 is screwed. Electrical equipment distributed from each branch breaker 88 is grounded through this grounding wire.

Japanese Patent Laid-Open No. 2000-244383

However, when a plurality of conventional terminal devices 80 are mounted in the distribution board 87, it is necessary to newly prepare the connection plate 90 as described above, and there is a problem that the number of members increases. Further, it is necessary to screw the connection plate 90 with two screws 86, 86, and there is a problem that the assembling workability is poor.

The present invention has been made in view of the above-described reasons, and an object of the present invention is to provide a terminal device that can improve assembly workability without increasing the number of members even when a plurality of devices are installed.

In order to achieve the above object, the invention of claim 1 is a case in which an insulating material is formed in a substantially rectangular box shape and one or more insertion holes are provided therethrough, and the case is opposed to the insertion holes. A fast connection terminal that locks and connects an electric wire inserted through the insertion hole, and is formed into a flat rectangular plate shape by a conductive material, and from the both longitudinal ends of the case to the outside. A first and a second extending piece that extend in parallel with the bottom of the case and are electrically connected to the quick-connection terminal in the case; Each has a hole through which a screw is inserted, and the first extension piece is approximately the thickness of the second extension piece with respect to the second extension piece. It is arrange | positioned near the said bottom part.

According to this invention, since the first extension piece is disposed closer to the bottom of the case by the thickness of the second extension piece than the second extension piece, For example, when mounting a plurality of terminal devices in a distribution board, the first extension piece of one terminal device and the other terminal while the bottoms of the cases of adjacent terminal devices are flush with each other The second extension piece of the apparatus can be overlapped so that the center portions of the holes coincide with each other. And 1
The adjacent cases can be connected to each other by inserting the screws of the book into the holes. Therefore, the assembly workability can be improved without increasing the number of members even when a plurality of devices are installed.

According to a second aspect of the present invention, in the first aspect of the present invention, the screw hole for contacting the first extension piece from the bottom side of the case and screwing the screw through the hole portion is provided. A terminal block is provided.

According to this invention, the terminal block having the screw hole for contacting the first extending piece from the bottom side of the case and for screwing the screw through the hole is provided. Therefore, for example, when a plurality of terminal devices are mounted in the distribution board, the first extending piece of one adjacent terminal device and the second extending piece of the other terminal device are connected to each other. When the holes are overlapped so that the center portions of the holes coincide with each other, one case of the screw is inserted into each of the holes and then screwed into the screw hole of the terminal block. It can connect more firmly and can improve contact reliability.

The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, the case is provided with attachment means for detachably attaching to the distribution board.

According to the present invention, since the case is provided with attachment means for detachably attaching to the distribution board, no tool is required for attachment and removal, and the workability is excellent.

In the present invention, there is an effect that assembly workability can be improved without increasing the number of members even when a plurality of installations are provided.

It is front sectional drawing of embodiment of this invention. It is a disassembled perspective view in the same as the above. (A) And (b) is explanatory drawing when connecting and attaching two terminal devices in the same in a distribution board. It is a perspective view when it attaches in the electricity distribution board in the same as the above, and a ground wire and an electric wire are connected. It is a perspective view of the conventional terminal device described in patent documents 1. It is a left side sectional view in the same. It is explanatory drawing when connecting and attaching the some terminal device same as the above in a distribution board.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. In the following description, the vertical and horizontal directions are defined in FIG. FIG. 1 is a front sectional view of the terminal device 1 shown in FIG. The terminal device 1 of this embodiment is shown in FIG.
2 and 2, the case 2, the quick connection terminal 17, and the first and second extending pieces 44 and 45.
With.

As shown in FIG. 1 and FIG. 2, the case 2 is formed in a substantially rectangular box shape as a whole by an insulating material, and is formed in a box-shaped upper case 5 that is open on one side and an elongated rectangular plate shape. It is comprised from the lower case 6 which is the bottom part of the case 2 attached so that the opening of the upper case 5 may be plugged up.

As shown in FIGS. 1 and 2, six insertion holes 51 are provided in the upper wall portion 5 a of the upper case 5 at regular intervals from the center in the front-rear direction toward the rear. In front of the six insertion holes 51, as shown in FIG.

As shown in FIG. 2, a pair of locking holes 53 penetrating each other are provided in parallel in the left-right direction below the front wall portion 5 b and the rear wall portion 5 c of the upper case 5. Further, a pair of stepped portions 54 serving as attachment means for detachably attaching to a mounting board 10 of a distribution board, which will be described later, project from the pair of locking holes 53 in the left-right direction. In the lower peripheral edge portion of the left wall portion 2d and the right wall portion 2e of the upper case 5, there are provided recesses 55 that are recessed upward, and the rear portion of the recess 55 has an elongated rectangular shape upward. The insertion ports 56 that are notched are respectively provided.

As shown in FIG. 2, a pair of claw portions 61 that protrude upward and elastically engage with the engagement holes 53 of the above-described upper case 5 are provided on the peripheral edges of the front and rear ends of the lower case 6 one by one. . As shown in FIGS. 1 and 2, a terminal block 16 formed in a substantially rectangular tube shape is integrally provided at the right end of the lower case 6, and the upper end of the terminal block 16 is A nut 7 in which a screw hole 8 is drilled is embedded.

As illustrated in FIGS. 1 and 2, the quick connection terminal 17 includes six lock springs 3 and a terminal plate 4. The six lock springs 3 include a central piece 33 which is a central portion of a strip formed of an electrically conductive material having elasticity, and a central piece 33 formed by bending one end of the strip into an approximately L shape. The locking piece 31 is inclined so as to widen the distance, and the other end portion of the band plate is bent into a substantially S shape, and the pressing piece 32 is elastic in the thickness direction of the central piece 33.

As shown in FIG. 2, the terminal plate 4 is formed in a U-shape that opens upward when viewed from the left side with a conductive material. The contact piece 42 and the terminal piece 43 are connected by 41 and face each other. Further, the terminal plate 4 has a first extension piece 44 and a second extension piece formed by bending the right end portion and the left end portion of the terminal piece 43 forward and further bending the upper end portion thereof outward in the left-right direction. Each of the extending pieces 45 is disposed. And
Holes 9 and 9 are respectively provided in the first and second extending pieces 44 and 45. However, the first extending piece 44 and the second extending piece 45 have different vertical positions as described above, as shown in FIG.
The first extending piece 44 has a lower bent position so as to be disposed closer to the lower case 6 by the thickness of the second extending piece 45 than the second extending piece 45. In addition, the 1st extension piece 44 and the 2nd extension piece 45 of this embodiment are mutually the same shape, and thickness width is also made equal.

Next, the assembly procedure of the terminal device 1 of this embodiment will be described. First, the six lock springs 3 are inserted toward the connecting piece 41 of the terminal plate 4. At this time, the central piece 33 of the lock spring 3 is connected to the terminal plate 4.
The locking piece 31 and the pressing piece 32 are opposed to the terminal piece 43 of the terminal plate 4. Next, the first extension piece 44 and the screw hole 8 of the terminal block 16 are opposed to each other while the hole portion 9 of the first extension piece 44 is opposed to the first extension piece 44.
The connecting piece 41 of the terminal plate 4 is placed on the lower case 6 with the extending piece 44 in contact with the upper end of the terminal block 16. Next, the opening surface of the upper case 5 is directed downward so that the insertion ports 56, 5 of the upper case 5 are directed downward.
6 is lowered toward the lower case 6 while being fitted into the left and right ends of the terminal piece 43 of the terminal plate 4. Then, the claw portions 61 of the lower case 6 are inserted into the opening of the upper case 5 while being bent inward by elastic deformation, and are respectively locked in the locking holes 53 of the upper case 5 by elastic return force. The upper case 5 and the lower case 6 are coupled by the locking, and the six lock springs 3 and the terminal plate 4 are accommodated in the case 2. Further, the six lock springs 3 are arranged in the case 2 so as to face the six insertion holes 51. As shown in FIG. 1, the first and second extending pieces 44 and 45 are connected to the case 2.
Each of the left and right end portions of each of the two members extends outward in parallel with the lower case 6.

Next, two terminal devices 1 according to the present embodiment are prepared (hereinafter referred to as terminal devices 1A and 1B), and a procedure for attaching them to the mounting base 10 disposed in these distribution boards (not shown). Will be described with reference to FIG. The terminal device 1B is quite common with the terminal device 1 described above, whereas
The terminal device 1A is partially different from the terminal device 1B and the terminal device 1 described above, and a terminal block 16 that contacts the second extending piece 45 is also provided at the left end portion of the lower case 6 thereof. Distribution board mounting base 1
As shown in FIG. 3A, 0 is formed in a substantially elongated rectangular plate shape as a whole by a synthetic resin material. At the both ends in the front-rear direction of the mounting base 10, the elongated rectangular plate-like side pieces 10 a, 1 are provided across the left and right ends.
0a is extended and the groove part 10b for inserting terminal device 1A, 1B by this is formed. The side pieces 10a, 10a are each provided with four receiving portions 10c penetrating in the front-rear direction.

First, as shown in FIG. 3A, the terminal block 1 that contacts the second extending piece 45 of the terminal device 1A.
The terminal device 1 </ b> A and the mounting base 10 are aligned in the longitudinal direction with 6 facing the left end side of the mounting base 10. Next, the terminal device 1A is pressed and inserted into the groove portion 10b while the lower case 6 of the terminal device 1A and the groove portion 10b of the mounting base 10 are opposed to each other. Then, the step part 54 of the upper case 5 has side pieces 10a,
10a is slid downward while being bent outward in the front-rear direction by elastic deformation. When the stepped portion 54 reaches the receiving portion 10c, the side pieces 10a, 10a return to their original state by the elastic return force, and the stepped portion 54 is fitted into the receiving portion 10c, so that the terminal device 1A is attached to the mounting base 10. The screw 11 is attached by being inserted into the hole 9 of the second extending piece 45 of the terminal device 1 </ b> A and screwed into the screw hole 8 of the terminal block 16.

Next, the second extending piece 45 of the terminal device 1B is opposed to the first extending piece 44 of the terminal device 1A, and the longitudinal directions of the terminal device 1B and the mounting base 10 are aligned. And the terminal device 1 mentioned above
Similarly to A, the terminal device 1B is attached to the mounting base 10 by inserting the terminal device 1B into the groove 10b while pressing the lower case 6 of the terminal device 1B and the groove 10b of the mounting base 10 facing each other. The screw 13 is inserted into the hole 9 of the first extending piece 44 of the terminal device 1B and is inserted into the terminal block 16.
It is attached by screwing into the screw hole 8.

Here, the first extending piece 44 of the terminal device 1A is disposed closer to the lower case 6 by the thickness width of the second extending piece 45 than the second extending piece 45 of the terminal device 1B. Therefore, the first extension piece 44 of the terminal device 1A and the second extension piece 45 of the terminal device 1B are arranged with the lower cases 6 and 6 of the adjacent terminal devices 1A and 1B being flush with each other. In addition, they can be overlapped so that the center portions of the hole portions 9 and 9 coincide with each other. Then, by inserting the screw 12 into the two holes 9 and 9 and screwing into the screw hole 8 of the terminal block 16 of the terminal device 1A, as shown in FIG.
The terminal device 1A and the terminal device 1B are connected and electrically connected. Terminal devices 1A, 1
When removing B from the mounting base 10, the screws 12 are screwed back to release the side pieces 10 a, 1 of the mounting base 10.
While manually expanding 0a in the front-rear direction, the stepped portion 54 of the terminal device 1B is first received by the receiving portion 10c.
The terminal device 1B may be removed in the same manner after the terminal device 1B is detached from the terminal device and removed.

And the terminal device 1 attached in the distribution board is wired as shown in FIG. That is, one end of the electric wire 14 (only three wires are shown in FIG. 4) is connected to the terminal device 1 (the terminal device 1A in FIG. 4).
Are inserted through the insertion holes 51 respectively. The other end of the wire 14 is a branch breaker (
It is connected to a ground terminal of a power outlet (not shown) corresponding to the not shown. The one end portion of the inserted electric wire 14 is pressed against the terminal piece 43 of the terminal plate 4 by the pressing piece 32 of the corresponding lock spring 3 in the case 2, and the locking piece 31 bites into the one end portion. The lock is connected by locking. In order to detach the electric wire 14 from the terminal device 1, the locking piece 31 is pressed downward by, for example, engaging a minus driver in a groove 52 provided in front of each insertion hole 51. Can be canceled.

Further, the second extension piece 45 on the left end side of the terminal device 1A has a ground wire 1 as shown in FIG.
5 is connected. A round terminal 15a is provided at the tip of the connecting wire 15, and the screw 1
1 is inserted through the hole of the round terminal 15a and the hole 9 of the second extending piece 45 and screwed into the screw hole 8, whereby the ground wire 15 is fixed to the terminal device 1A.

Hereinafter, the operation of the terminal device 1 of this embodiment attached in this way will be described. As described in the prior art, the terminal device 80 described in Patent Document 1 requires a new connection plate 90 when a plurality of terminal devices 80 are mounted in the distribution board 87, and there is a problem that the number of members increases. There is a problem that assembly workability is poor because it is necessary to screw the connection plate 90 with two screws 86 and 86. On the other hand, the terminal device 1 of the present embodiment has the first and second extending pieces 4.
The first extending piece 44 is disposed closer to the lower case 6 than the second extending piece 45 by the thickness width of the second extending piece 45. Accordingly, as described above, for example, when two terminal devices 1A and 1B are installed in the distribution board, the first extension piece 44 of the terminal device 1A and the adjacent lower cases 6 and 6 are flush with each other. The second extending piece 45 of the terminal device 1B can be overlaid so that the center portions of the hole portions 9 and 9 coincide with each other. The terminal device 1A and the terminal device 1B can be coupled and electrically connected by simply screwing one location with one screw 12. Therefore, the assembly workability can be improved without increasing the number of members even when a plurality of devices are installed.

In the above description, the case where the two terminal devices 1A and 1B are attached to the mounting base 10 and connected is described as an example. However, the present invention is not limited to this, and a large number of terminal devices 1A, 1B, 1C,. It is also possible to connect them. However, in this case as well, the terminal device 1A having two terminal blocks 16 is first attached to the left end portion of the mounting base 10, and 1B having only one terminal base 16 is later installed.
, 1C,..., 1C... Are always arranged at both left and right ends of the mounting base 10, so that the ground wire 15 can be connected to the end side of the mounting base 10, and the overall appearance can be obtained. Can also be better.

DESCRIPTION OF SYMBOLS 1 Terminal device 2 Case 3 Lock spring 9 Hole part 17 Quick-connection terminal 44 1st extension piece 45 2nd extension piece 51 Insertion hole

Claims (3)

A case formed of an insulating material in a substantially rectangular box shape and having one or more insertion holes penetrating therethrough, and an electric wire disposed in the case facing each of the insertion holes and inserted through the insertion hole. A quick-connect terminal that is locked and connected, and is formed into a flat rectangular plate shape using a conductive material, and extends from both ends in the longitudinal direction of the case to the outside in parallel with the bottom of the case, and in the case First and second extending pieces electrically connected to the quick connection terminal,
Each of the first and second extending pieces is provided with a hole through which a screw is inserted, and the first extending piece is connected to the second extending piece with respect to the second extending piece. The terminal device, wherein the terminal device is disposed closer to the bottom of the case by a thickness width of the protruding piece. A terminal block having a screw hole for contacting the first extending piece from the bottom side of the case and for screwing the screw through the hole is provided. The terminal device according to claim 1. The terminal device according to claim 1, wherein the case is provided with attachment means for detachably attaching to the distribution board.

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