JP2018006070A - Terminal board - Google Patents

Abstract

A terminal block capable of shortening a power failure time in a cable switching operation is provided. According to one embodiment, a terminal block includes a first conductor that can be electrically connected to a first circuit and a second conductor that can be electrically connected to a second circuit. A terminal block base, a first terminal block including a single first terminal that can be electrically connected to the first wiring, and a single second terminal that can be electrically connected to the second wiring And a second terminal block. The first terminal block and the second terminal block are detachable from the terminal base. [Selection] Figure 1

Description

  Embodiments described herein relate generally to a terminal block.

  Conventionally, cable renewal work is performed, for example, in the following procedure in renewal work for existing electrical equipment in a plant. First, (1) the existing cable is disconnected from the terminal block, and (2) the existing cable is pulled out. Then, (3) after the new cable is inserted, (4) the terminal processing of the cable is performed. After that, (5) the terminal-treated cable is connected to the terminal block.

  The existing cable attached to the terminal block includes a power cable, and if the existing cable is disconnected for each terminal block, it is necessary to power-down the existing electrical product during the cable switching operation. Therefore, the power outage time becomes longer.

JP 2006-344393 A

  The embodiment provides a terminal block capable of reducing the power failure time in the cable switching operation.

  The terminal block according to the embodiment includes a terminal block base including a first conductor that can be electrically connected to the first circuit, and a second conductor that can be electrically connected to the second circuit. The first terminal block including a single first terminal that can be electrically connected to the first wiring, and the second including a single second terminal that can be electrically connected to the second wiring. A terminal block. The first terminal block and the second terminal block are detachable from the terminal block base. When the first terminal block is attached to the terminal block base, the first terminal is When the first wiring is electrically connected to the first circuit by connecting to the first conductor, and the second terminal block is attached to the base, the second terminal is connected to the second conductor. The second wiring is electrically connected to the second circuit by connecting to the second circuit.

  In this embodiment, each terminal block block having a single terminal can be detachably connected to the terminal block base and removed. Therefore, when one terminal block is removed, even if the power cable is connected to the other terminal block, the switching operation of one terminal block is performed before and after that. Therefore, power outage time can be shortened.

It is a perspective view which illustrates the terminal block concerning a 1st embodiment. It is a partial exploded assembly figure of the terminal block of 1st Embodiment. FIG. 3A is a perspective view of a part of the terminal block. FIG. 3B is a cross-sectional view taken along plane A in FIG. FIG. 3C is a bottom view of a part of the terminal block. It is a top view of a part of terminal block of a 1st embodiment. FIG. 5A and FIG. 5B are perspective views illustrating a method of using the terminal block of the first embodiment. FIG. 6 is a partially exploded view illustrating a terminal block according to a second embodiment. FIG. 10 is a partially exploded view illustrating a terminal block according to a modification of the second embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The drawings are schematic or conceptual, and the relationship between the thickness and width of each part, the size ratio between the parts, and the like are not necessarily the same as actual ones. Further, even when the same part is represented, the dimensions and ratios may be represented differently depending on the drawings.
In the present specification and drawings, the same elements as those described above with reference to the previous drawings are denoted by the same reference numerals, and detailed description thereof is omitted as appropriate.

(First embodiment)
FIG. 1 is a perspective view illustrating a terminal block according to this embodiment.
FIG. 2 is a partially exploded view of the terminal block of the present embodiment.
FIG. 3A is a perspective view of a part of the terminal block. FIG. 3B is a cross-sectional view taken along plane A in FIG. FIG. 3C is a bottom view of a part of the terminal block.
FIG. 4 is a plan view of a part of the terminal block of the present embodiment.
As shown in FIGS. 1 and 2, the terminal block 10 of the present embodiment includes a terminal block base 11 and a terminal block block 20. A plurality of terminal block blocks 20 are connected to the terminal block base 11. In this example, 12 terminal block blocks 20 are arranged on the terminal block base 11 in the X-axis direction and two in the Y-axis direction. The number of the terminal block 20 in the X axis direction can be arbitrarily set. The number of terminal block 20 in the Y-axis direction is one or two.

  Each terminal block 20 is detachably attached to the terminal block base 11. As will be described later, a concave portion is provided on the bottom surface of the terminal block block 20, and a convex portion 13 is provided on the surface of the terminal block base 11. The terminal block 20 is fixed to the terminal block base 11 by fitting these concave and convex portions 13 together.

  Base wall portions 14 are provided on the side surfaces of the terminal block blocks 20 at both ends in the X-axis direction among the plurality of terminal block blocks 20 arranged on the terminal block base 11. The base wall portion 14 is connected to the end portion of the terminal block base 11. Engaging convex portions 11 a are provided at both ends along the X-axis of the terminal base 11. An engagement recess 14 a is provided at an end of the base wall portion 14 attached to the terminal block base 11. The base wall portion 14 is fixed to the terminal block base 11 by engaging the engaging convex portion 11a and the engaging concave portion 14a with each other. The base wall portion 14 supports the terminal block block 20 so as not to drop off. The base wall portion 14 is formed of an insulating material such as resin.

  A drop-off prevention lock 18 is provided across the terminal block 20 arranged in the X-axis direction via the base wall portions 14 on both sides in the X-axis direction. The drop-off prevention lock 18 is provided so that the terminal block 20 arranged in the X-axis direction does not drop off. The dropout prevention lock 18 is made of an insulating material such as resin. The dropout prevention lock 18 has low elasticity. The drop-off prevention lock 18 is biased toward the inside formed in a U shape by the low elasticity of the resin. The terminal block 20 is supported by a drop prevention lock 18 that is biased in the X-axis direction.

  As shown in FIG. 3A, the terminal block 20 includes a block main body 21, screws 22, a cover 23, and an insulating wall portion 24.

  A pattern surface 28 is provided on the side surface of the block main body 21. The pattern surface 28 may be provided on all the side surfaces parallel to the Z axis, or may be provided on one side surface. In the case of being provided on one side, when the terminal block block 20 is attached to the terminal block base 11, a side that can be visually recognized from the outside is selected.

  A unique pattern is applied to the pattern surface 28 for each terminal block 20. The pattern provided on the pattern surface 28 only needs to be able to visually distinguish between the terminal block blocks 20, and the pattern includes characters such as simple colors, numbers, and English letters. For example, a certain terminal block block 20 is colored by a single red color, and the other terminal block block 20 is colored by a single blue color. The pattern of the pattern surface 28 is formed by sticking or painting on a part or all of the side surface of the block main body 21 with a seal. The pattern of the pattern surface 28 is not limited to a planar pattern, and may be formed by unevenness provided on the side surface of the block main body 21.

  As shown in FIG. 3B, the block main body 21 has an internal thread portion 25 provided in the direction along the Z axis. The screw 22 is a male screw and can be screwed into the female screw portion 25. The screw 22 and the female screw portion 25 are made of a conductive material. The female screw portion 25 is provided from the surface of the block main body 21 toward the bottom surface.

  As shown in FIG. 3C, a conductive portion 27 connected to the bottom of the female screw portion 25 is provided on the bottom surface of the block main body 21. A concave portion 26 is formed in the conductive portion 27. The concave portion 26 is fitted into the convex portion 13 formed on the terminal block base 11 to fix the terminal block block 20 to the terminal block base 11.

  The terminal block 20 is provided with an insulating wall portion 24 so as to surround the head of the screw 22 when the screw 22 is screwed. Further, the terminal block 20 is provided with a cover 23 so as to cover the head of the screw 22. By providing the cover 23 and the insulating wall 24, the terminal block 20 contacts the terminal processing portion of the adjacent cable after the terminal block 20 having the cable attached to the screw 22 is attached to the terminal block base 11. To prevent short circuit accidents.

  As shown in FIG. 4, the connection conductor 12 is provided on the surface of the terminal block base 11 on which the terminal block block 20 is attached. The connection conductor 12 is electrically connected by contacting a conductive portion 27 provided on the bottom surface of the terminal block 20. The terminal block blocks 20 connected to the connection conductor 12 having the same potential can also be connected. In this example, the terminal block blocks 20 adjacent in the Y-axis direction are electrically connected. Electrical connection between the terminal block blocks 20 can be arbitrarily set by the connection conductor 12 on the terminal block base 11.

  The base material of the terminal block base 11 is formed of an insulating material. The connection conductor 12 is formed of a conductive material, for example, copper or an alloy containing copper.

  For example, the convex portion 13 is formed on the base material of the terminal block base 11. The connection conductor 12 is formed so as to cover the convex portion formed on the base material. In addition, you may make it not provide a connection conductor in the part of the convex part formed in the base material.

  The shape of the projection 13 formed on the terminal block base 11 in the XY plan view is the same as the shape of the corresponding recess 26 in the XY plan view. The XY plan view shapes of the convex portion 13 and the concave portion 26 are different for each terminal block 20. For example, as shown in FIG. 4, the convex portions 13 provided at positions corresponding to the respective terminal block blocks 20 of the terminal block base 11 are formed in a circular shape, a square shape, a triangular shape, a rhombus shape, or the like in the XY plan view. The XY plan view of the recess 26 of the terminal block 20 connected to each position is also formed into a circle, a rectangle, a triangle, a rhombus, or the like. In the terminal block base 11, in order to identify the position corresponding to the terminal block block 20, the convex portion 13 corresponding to one terminal block block 20 is not limited to one convex shape, and is provided as a plurality of convex shapes. Also good. When the convex part 13 is two triangles, the terminal block 20 has two triangular concave parts 26 at corresponding positions.

  In the above-described example, the convex portion 13 is formed on the terminal block base 11 and is fixed to each other by fitting with the concave portion 26 formed on the terminal block block 20. Instead of this, a concave portion may be formed in the terminal block base 11, and a convex portion that fits into the concave portion may be formed in the terminal block block 20.

The usage method of the terminal block of this embodiment is demonstrated.
FIG. 5A and FIG. 5B are perspective views illustrating a method of using the terminal block of the first embodiment.
In the terminal block of the present embodiment, the terminal block block 20 is detachably attached to the terminal block base 11. The terminal block 20 is attached to a position where the shape of the concave portion 26 and the shape of the convex portion of the terminal block base 11 coincide.

  When a cable is attached to the terminal block 10, the terminal-treated cable is connected to the block main body 21 in advance by screws 22 and fixed to the terminal block block 20. The terminal block 20 to which the cable is attached is attached to a corresponding position on the terminal block base 11. Corresponding positions of the terminal block base 11 are identified by the shapes of the concave portions 26 and the convex portions 13.

  As shown in FIG. 5 (a), with the cable 2 attached to each terminal block block 20 in advance, the tester 4 is used to check the continuity test of the cable and the electrical connection state with the terminal block block 20 of the cable. Can be tested.

  After the continuity is confirmed, each terminal block 20 is attached to the terminal block base 11 together with the cable 2.

  After all the terminal block blocks 20 are attached to the terminal block base, the drop prevention lock 18 is attached.

  When removing the cable 2 from the terminal block 10, the drop prevention lock 18 is first removed.

  As shown in FIG.5 (b), the terminal block 20 can be removed one by one, and the terminal block to which the cable was previously attached can be attached whenever it removes. When the terminal block 20 is to be removed, the pattern of the pattern surface 28 and the function of the cable (for example, a power cable or a signal cable) are made to correspond on the circuit diagram etc. Can be determined.

  The cable 2 may be removed from the removed terminal block block 20, another cable that has undergone terminal processing may be attached, and the terminal block base 11 may be attached again.

The effect of the terminal block of this embodiment will be described.
In the terminal block 10 of the present embodiment, each terminal block block 20 can be detachably attached to and removed from the terminal block base 11. Therefore, cable connection and replacement work can be performed in a live line state, it is not necessary to cut off the power supply, and the power failure time can be shortened. Further, since the terminal block base 20 can be connected together with the terminal block base after the cable screwing operation is performed in advance, the cable connection operation is facilitated even in a narrow place and the work man-hours can be reduced. .

  Since the terminal block 20 and the terminal block base 11 have the concave portions 26 and the convex portions 13 that fit into the corresponding positions, the connection is made when the terminal block block 20 to which the cable is attached is attached to the corresponding positions. It can be made difficult to make mistakes.

  Furthermore, since the pattern surfaces 28 of the plurality of terminal block blocks 20 are different from each other, it is possible to reduce cable connection errors by matching the connection destination of the connected cable with the pattern of the pattern surface 28.

(Second Embodiment)
FIG. 6 is a partially exploded view illustrating the terminal block according to this embodiment.
In the terminal block 110 of this embodiment, the number of terminals to which the cable is attached can be expanded.
As shown in FIG. 6, the terminal block 110 includes a terminal block base 111 and an additional terminal block base 112. The extension terminal block base 112 is detachably connected to the terminal block base 111. The terminal block base 111 has engaging convex portions 111a at both ends in the X-axis direction. The extension terminal block base 112 has an engaging recess 112a at one end in the X-axis direction. The engagement recess 112a is engaged and fixed to the engagement protrusion 111a. The extension terminal block base 112 engages with the terminal block base 111 to expand the area of the terminal block base.

  The extension terminal block base 112 has an engaging protrusion 112b at the end opposite to the end where the engaging recess 112a is formed. The engaging convex portion 112 b is engaged with the engaging concave portion 14 a of the base wall portion 14. The engaging convex portion 111a, the engaging concave portion 112a, and the engaging convex portion 112b are formed of the same material as the terminal block base 111 and the additional terminal block base 112, respectively. The extension terminal block base 112 may be formed of the same material as the terminal block base 111 or may be formed of a different material.

  In addition, the convex part and recessed part for mutual engagement are not restricted to the above-mentioned case. For example, the terminal block base may have an engagement concave portion, and the additional terminal block base may have an engagement convex portion.

  The drop-off prevention lock 118 has a length corresponding to the number of terminal block blocks 20 with an additional length in the X-axis direction. The drop prevention lock 118 is attached after the terminal block block 20 is attached to the terminal block base 111 and the additional terminal block base 112.

The usage method of the terminal block 110 of this embodiment is demonstrated.
When attaching a cable to the terminal block 110, first, the cable is attached to the terminal block block 20 as in the case of the first embodiment. The terminal block block 20 to which the cable is attached is attached to the terminal block base 111.

  The extension terminal block base 112 is fixed to the terminal block base 111 by engaging the engagement recess 112 a of the extension terminal block base 112 with the engagement protrusion 111 a of the terminal block base 111.

  The terminal block block 20 to which the cable is previously attached is attached to the extension terminal block base 112.

  The base wall portion 14 is attached to the open side surface of the terminal block block 20 attached to the extension terminal block base 112.

  The order of each of the above steps may be changed. For example, after attaching the extension terminal block base 112 to the terminal block base 111, all the terminal block blocks 20 may be mounted. Further, after the extension terminal block base 112 is attached to the terminal block base 111, the base wall portion 14 may be attached to the extension terminal block base 112, and then the terminal block block 20 may be attached.

  When removing a cable from the terminal block 110, it can carry out similarly to the case of 1st Embodiment. In order to remove the cable, after the terminal block block 20 is removed, the additional terminal block base 112 can be further detached from the terminal block base 111 to return to the state before the expansion, and then the terminal block block 20 can be attached again. .

(Modification)
The expansion terminal block base is not limited to being provided for every two rows in the Y-axis direction, but can be added for one row in the X-axis direction.
FIG. 7 is a partially exploded view illustrating a terminal block according to this modification.
As shown in FIG. 7, the terminal block 210 of this modification further includes an additional terminal block base 212. The extension terminal block base 212 is divided into areas adjacent in the Y-axis direction. The extension terminal block base 212 has portions 213 and 214. The portion 213 includes an engaging convex portion 213a, an engaging concave portion 213b, and an engaging convex portion 213c. The portion 214 has an engagement recess 214a, an engagement recess 214b, and an engagement protrusion 214c. The portions 213 and 214 can be fixed to each other by engaging the engaging convex portion 213a and the engaging concave portion 214a.

  The portions 213 of the additional terminal block base 212 are engaged and fixed to each other by the engagement recess 213 b and the engagement protrusion 111 a of the terminal block base 111. The portions 214 are engaged and fixed to each other by the engagement recess 214b and the terminal block base engagement projection 111a.

  The engaging convex portion 213c of the portion 213 and the engaging convex portion 214c of the portion 214 are respectively engaged and fixed to the two engaging concave portions 14a of the base wall portion 14.

  The portions 213 and 214 of the extension terminal block base 212 can be detachably attached. The extension terminal block base 212 can be detachably attached to the terminal block base 111.

  The terminal block 20 after the expansion is supported by the dropout prevention lock 218 so as not to drop off.

  Since the terminal block 210 of the present modification includes the additional terminal block base 212 that can be divided, the terminal block block 20 to which the cable is previously attached is attached to the divided portion 213 or the portion 214, and the terminal block 210 The part 213 or the part 214 to which the base block 20 is attached can be sequentially attached to the terminal base 111. The number of mounting steps can be reduced as compared to mounting the terminal block 20 one by one.

  According to the embodiment described above, the terminal processing and screwing work of the cable can be performed before the power failure, and a terminal block that shortens the power failure time can be realized.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and the equivalents thereof. Further, the above-described embodiments can be implemented in combination with each other.

  2 cable, 4 tester, 10 terminal block, 11 terminal block base, 12 connecting conductor, 13 conductor protrusion, 14 base wall, 18 drop-off prevention lock, 20 terminal block block, 21 block body, 22 screw, 23 cover, 24 Insulating wall, 25 female thread, 26 recess, 27 conductive part, 28 pattern surface, 110, 210 terminal block, 111, 211 terminal block base, 112, 212 extension terminal block base, 213, 214 part

Claims (6)

A terminal block base comprising: a first conductor that can be electrically connected to the first circuit; and a second conductor that can be electrically connected to the second circuit;
A first terminal block including a single first terminal that can be electrically connected to the first wiring;
A second terminal block including a single second terminal that can be electrically connected to the second wiring;
With
The first terminal block and the second terminal block are detachable from the terminal block base, respectively.
When the first terminal block is attached to the terminal block base, the first terminal is connected to the first conductor to electrically connect the first wiring to the first circuit;
A terminal block for electrically connecting the second wiring to the second circuit by connecting the second terminal to the second conductor when the second terminal block is attached to the base. The terminal block base is
A first protrusion on a surface to which the first terminal block is attached and detached;
A second protrusion on a surface on which the second terminal block is attached and detached;
The first terminal block is
A first recess on a surface to be attached to and detached from the terminal block base;
The second terminal block is
A second recess on the surface to be attached to and detached from the terminal block base;
By connecting the first convex portion with the first concave portion, the terminal block base and the first terminal block block are connected,
By connecting the second convex portion with the second concave portion, the terminal block base and the second terminal block block are connected,
The terminal block according to claim 1, wherein the first convex portion has a shape different from that of the second convex portion. The terminal block base is
A third recess on a surface to which the first terminal block is attached and detached;
A fourth recess on a surface to which the second terminal block is attached and detached,
The first terminal block is
Having a third protrusion on the surface to be attached to and detached from the terminal block base;
The second terminal block is
Having a fourth protrusion on the surface to be attached to and detached from the terminal block base;
By connecting the third concave portion with the third convex portion, the terminal block base and the first terminal block block are connected,
By connecting the fourth concave portion with the fourth convex portion, the terminal block base and the second terminal block block are connected,
The terminal block according to claim 1, wherein the third convex portion has a shape different from that of the fourth convex portion.   The first terminal block and the second terminal block have different surfaces from the surface attached to and detached from the terminal block base, and the different surfaces of the first terminal block and the second terminal block. Are terminal blocks according to any one of claims 1 to 3, each having a different pattern. An extension terminal block base provided at an end of the terminal block base;
A third terminal block block detachably connected to the extension terminal block base;
The terminal block according to any one of claims 1 to 4, further comprising: An insulating first cover member covering the first terminal;
An insulating second cover member covering the second terminal;
The terminal block according to any one of claims 1 to 5, further comprising:

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