JP3130741U - Connector and distribution board - Google Patents

Abstract

Disclosed is a connector and a distribution board that can easily absorb a displacement in height of a breaker terminal block and can be easily connected.
A connector 10 is attached to face a terminal block 4 of a breaker 3 attached to a distribution board 1. The connector 10 forms the first wall portion 12 and the second wall portion 13 facing each other. A long hole 121 facing the breaker 3 is formed in the first wall 12, and an opening 131 for inserting the bus bar 5 is formed in the second wall 13. The connector 10 is mounted with a flexible connection bar 20 formed by laminating a plurality of thin copper plates. The connection bar 20 is formed by the connection bar main body portion 21 (the body portion 201, the first terminal portion 202, the second terminal portion 203) and the connection terminal portion 22. The first terminal portion 202 is inserted through the long hole 121 and connected to the input terminal portion 41 of the breaker 3, and the bus bar side terminal portion (connecting terminal portion 22) is disposed in the opening 131 to connect to the bus bar 5. Connecting.
[Selection] Figure 1

Description

  The present invention relates to a connector for connecting a branch breaker and a bus, and a distribution board for storing the branch breaker, a bus bar, and the connector.

  Generally, a distribution breaker is arranged on the distribution board. Since the branch breaker is provided with a switch part by external operation, it is necessary to install the branch breaker so that the switch part of the branch breaker can protrude from the surface cover surface of the distribution board. On the other hand, the size of the branch breaker varies depending on its capacity. When storing various branch breakers in the set distribution board, the branch breaker is supported by the height adjustment stand. The height position of the terminal block of the branch breaker was to be adjusted.

  However, since it is time-consuming to adjust the height position of the branching breaker, improvement related to the connector and distribution board for connecting the branching breaker and the bus bar is conventionally disclosed in Patent Document 1. It was proposed. According to this, the distribution board contains a connector for connecting the branch breaker and the bus bar. The distribution board is placed on a stand for height adjustment. The connector is formed so as to support a connection bar that connects the branch breaker and the bus bar. That is, in the connector, a hole is formed in one facing wall and one end of the connecting bar can be inserted to connect to the branch breaker, and an opening is formed in the other wall to connect the bus bar. The other end of the connection bar is connected to the bus bar.

  The connection bar consists of a branch breaker side terminal part, a bus bar side terminal part, and a connecting part that connects both terminal parts, and has a step in the height direction by bending one copper plate by press working. Is formed. The step is formed in a plurality of types having different step sizes according to the height of the terminal block.

  Further, a plurality of holes in one wall portion formed in the connector are formed in the vertical direction when the vertical direction to the surface of the distribution board is defined as the vertical direction. Then, either hole is used in accordance with the height of the terminal block, and a connection bar having an appropriate level difference is selected and used.

The connection bar is attached to the connector by removing the detachable side wall and inserting it from the side of the connector. As a result, even if the height position of the terminal block of the branch breaker is different, mounting the selected selection bar in one of the holes increases the degree of freedom of mounting the connection bar with one connector. Can be used. And since a connection bar is not connected to another connection conductor for height adjustment by this, manufacture of a distribution board can be made easy.
Utility Model Registration No. 3113256

  However, in the conventional connector disclosed in Patent Document 1, since the connection bar to be attached to the connector is formed by pressing one copper plate, the degree of freedom of attachment of the connection bar in the connector is increased. However, there was a limit to the height adjustment. In other words, since a plurality of types of connection bars must be formed, a plurality of molds had to be manufactured at the time of pressing, and a height adjustment base on which a branch breaker was placed was also required. . Therefore, depending on the case, it could not be accommodated in a distribution board whose height was limited.

This invention solves the above-mentioned subject, and aims at providing a connector and a distribution board which can be connected to a branch breaker with one connection bar which can secure permissible current. is there. Therefore, the connector and distribution board according to the present invention are
According to the first aspect of the present invention, there is provided a connector for connecting a breaker disposed on a distribution board and a bus bar, the first wall having a hole, and the second wall having an opening. And a case main body having a detachable side wall portion between the first wall portion and the second wall portion, and a hole portion of the first wall portion being inserted through the hole. And a connection bar connected to the bus bar inserted into the opening of the second wall, and having one end connected to the breaker, and the connection bar is flexible And having a body portion and terminal portions disposed at both ends of the body portion.

  The invention according to claim 2 is characterized in that the connecting bar is formed by laminating thin copper plates, and the body portion and the terminal portion are integrally formed.

  The invention according to claim 3 is characterized in that the connection bar includes a terminal portion in which thin copper plates are laminated and a body portion formed in a flat knitted shape connected to the terminal portion.

The distribution board according to claim 4 has a first wall portion having a hole portion and a second wall portion having an opening portion on opposing surfaces, and the first wall portion and the A case main body formed with a detachable side wall portion between the second wall portion, a body portion formed with flexibility, and a terminal portion disposed at both ends of the body portion And a connecting bar having one terminal portion inserted through the hole of the first wall portion and projecting from the main body case, and one terminal portion of the connecting bar Is connected to the breaker,
And a bus bar inserted into the opening of the second wall portion and connected to the other terminal portion of the connection bar.

  The distribution board according to claim 5 is characterized in that the connector is equipped with a connection bar formed by laminating thin copper plates.

  In the connector according to the present invention, the side wall is removed and the connection bar is attached. At this time, one end of the connection bar is inserted from the hole of the first wall portion to protrude from the connector, and the other end of the connection bar is disposed in the opening of the second wall portion. The connection bar is formed with flexibility. After attaching the removed side wall portion to the case body, the connection bar is bent so that one end of the connection bar protruding from the hole portion of the first wall portion can be connected to a desired terminal portion of the terminal block of the breaker. In the second wall portion, a bus bar is inserted into the opening to connect to the other end of the connection bar. As a result, the breaker and the bus bar are connected by the connector.

  As described above, in the connector of the present invention, the connection bar can be bent and one end thereof can be connected to the breaker. Therefore, even if the height of the terminal block of the breaker is different, adjustment is performed without using other members. be able to. In addition, since only one type of connection bar is manufactured, it is only necessary to manufacture one type of die for pressing, and the manufacturing cost can be reduced. In addition, since it is possible to delete the table for placing the breaker, which has been conventionally required, the production cost of the distribution board can be reduced.

  In addition, by laminating a plurality of thin copper plates, the connection bar formed to have a predetermined thickness and width dimension is a cross-sectional area of the laminated bar formed of a single sheet having the same thickness and width dimension and its longitudinal cut surface. Will not change. However, if the current flowing through the conductor has the same cross-sectional area, the larger the surface area of the outer peripheral surface surrounding the conductor is, the more the current flows (that is, the current density becomes higher). The allowable current can be made larger than that of a connection bar formed of a single copper plate having the same cross-sectional area. Therefore, when a connector having the same allowable current is manufactured, it is possible to manufacture more compactly using a connection bar formed by laminating thin copper plates than using a connection bar made of a single copper plate.

  Further, in this device, if both terminal portions of the laminated bar are formed by laminating thin copper plates, the body portion may be formed integrally with both terminal portions by laminating thin copper plates, Even if the body portion is formed in a flat knitted shape, it can be applied to any of them.

  Next, the connector and distribution board of the embodiment will be described in detail based on the drawings. 1-2 show a part of a distribution board, and FIGS. 3-4 show a connector. The distribution board 1 accommodates a branch breaker (hereinafter simply referred to as a breaker) 3, a connector 10, and a bus bar 5. A protective cover 7 is disposed above the breaker 3 and the connector 10 so that the switch portion 31 of the breaker 3 can protrude. In the following description, the direction (vertical direction in FIG. 1) perpendicular to the surface of the distribution board 1 is defined as the vertical direction.

  In the breaker 3, terminal blocks 4 are formed on both the left and right sides, and a plurality of input terminal portions 41 are formed on the terminal block 4. A connector 10 is disposed at a position facing one terminal block 4.

  The connector 10 is formed of a synthetic resin insulator, and has a case body 11 formed in a substantially rectangular parallelepiped as shown in FIG. 3, and a first wall portion 12 on a surface facing the breaker 3. The second wall 13 is formed on the opposite side of the first wall 12. Side wall portions 14 and 15 are disposed between the first wall portion 12 and the second wall portion 13, and one side wall portion 14 is formed as a detachable mounting wall portion. The first wall portion 12 and the second wall portion 13 are formed as a single case 18 in which the other side wall portion 15, the ceiling wall 16, and the bottom wall portion 17 are integrally formed. The attachment wall portion 14 is attached to the side portion.

  The first wall portion 12 has a plurality of elongated holes 121 that are elongated in the horizontal direction in the vertical direction, and the second wall portion 13 has a plurality of openings 131 that are elongated in the horizontal direction in the vertical direction. Is formed. One end of the long hole 121 is closed by the side edge of the first wall 12, and the other end opens the side edge of the first wall 12. The opening 131 is formed so that both edges of the second wall 13 are opened and the bus bar 5 can be inserted in the width direction. Support plate portions 111 for supporting the connection bar 20 are formed near the respective openings 131 in the case body 11 at positions lower than the openings 131 (see FIG. 1). The nut 15 is accommodated in the side wall 15 by forming two nut accommodation holes 151 in the vicinity of the opposite corners, and the screw insertion hole 141 for inserting the screw 19 is provided in the mounting wall 14. It is formed in the position which opposes. The screw 19 is fastened to the nut 152 via a cylindrical screw insertion portion 153 formed in the side wall portion 15.

  As shown in FIG. 4, the case main body 11 is arranged in parallel according to the number of input terminal portions 41 formed on the terminal block 4 of the breaker 3. In this case, the plurality of case bodies 11 are fastened by fastening the nuts 152 accommodated in the nut housing holes 151 of the final case body 11 using the screws 19 having a length corresponding to the plurality of case bodies 11. . That is, in FIG. 4, the screw 152 inserted through the screw insertion portions 153A and 153B from the mounting wall portion 14A side of the front case main body 11A is installed in the nut storage hole 151B of the rear case main body 11B. It will be concluded with.

  As shown in FIGS. 5 to 6, the connection bar 20 includes a connection bar main body 21 formed of a body portion 201, a first terminal portion 202 and a second terminal portion 203 disposed at both ends of the body portion 201, and And a connection terminal portion 22 of a conductor which is attached to the second terminal portion 203 and holds the bus bar 5. The first terminal portion 202 is inserted into the elongated hole 121 of the first wall portion 12 as a breaker-side terminal portion, and protrudes outward from the first wall portion 12. A screw insertion hole 204 for connecting to the input terminal portion 41 of the breaker 3 is formed in the first terminal portion 202.

  A screw insertion hole 205 for fixing the connection terminal portion 22 is formed in the second terminal portion 203. The connection terminal portion 22 includes an upper terminal portion 222 and a lower terminal portion 223 that are formed in a dish shape with a concave portion 221 in the center in the longitudinal direction, and the upper terminal portion 222 and the lower terminal portion 223 are opposite to each other. It is formed by being overlapped in a state directed in the direction. That is, by joining the concave portion 221 of the upper terminal portion 222 and the concave portion 221 of the lower terminal portion 223, one end portion forms a gap that can hold the second terminal portion 203 of the connection bar body 21, and the other end portion The part forms a gap that can hold the bus bar 5.

  The second terminal portion 203 and the connection terminal portion 22 are arranged as bus bar side terminal portions, and the connection terminal portion 22 extends to the vicinity of the second wall portion 13 so that the connection terminal portion 22 extends to the second wall portion 13. Is disposed in the opening 131. The lower terminal portion 223 of the connection terminal portion 22 is supported by the support plate portion 111 of the case main body 11 and is disposed slightly above the lower side of the opening portion 131 and between the end portion of the upper terminal portion 222 and the bus bar 5. The clearance for inserting is secured. Note that the upper terminal portion 222 and the lower terminal portion 223 of the connection terminal portion 22 are formed of leaf springs, and the end portions on the bus bar 5 side are slightly bent in a direction approaching each other in a natural state. Therefore, by inserting the bus bar 5 into the gap between the upper terminal portion 222 and the lower terminal portion 223, the bus bar 5 is pressed by the urging force of the upper terminal portion 222 and the lower terminal portion 223 to narrow the bus bar 5 Can have.

  The connection bar main body 21 of the connection bar 20 is formed by laminating a plurality of thin copper plates. As shown in FIG. 5, the body portion 201 may be covered with a cylindrical insulating cover 23. As a result, the laminated thin copper plates can be integrated together, and the connection bar main bodies 21 protruding from the first wall portion 12 can be insulated even if they are likely to contact each other.

  The thin copper plate according to the embodiment has a thickness of 1 mm and a width of 20 mm, for example, and is formed by stacking 5 to 6 sheets.

  Generally, the allowable current of a conductor is expressed by current density × cross-sectional area. It is well known that when a current flows through a conductor, the current density increases as the outer peripheral surface of the conductor around which the current passes increases, and a large amount of current flows. Therefore, when the cross-sectional area (thickness x width) of the set conductor is the same, a conductor obtained by stacking a plurality of thin copper plates is compared with a conductor formed by stacking a plurality of thin copper plates and a conductor formed by one sheet. In this case, the current density becomes higher and a larger amount of current flows. Therefore, the allowable current can be increased. This is also apparent from Table 1 (extracted from the catalog of “Hitachi Electric Copper Products” manufactured by Hitachi Cable).

表１によれば、導体のサイズが３(厚み)×２５(幅)の場合の許容電流は２６０Ａで示され、２枚の場合は４４０Ａで示されている。６(厚み)×２５(幅)の場合の許容電流は３９０Ａで示されていている。これによって、積み重ねた導体の方が１枚の導体に比べて許容電流が約１．１３倍と大きくなっていることが分かる。

According to Table 1, when the conductor size is 3 (thickness) × 25 (width), the allowable current is indicated by 260A, and in the case of two conductors, it is indicated by 440A. The allowable current in the case of 6 (thickness) × 25 (width) is indicated by 390A. As a result, it can be seen that the allowable current of the stacked conductors is about 1.13 times that of the single conductor.

  In addition, the connection bar 20 is not limited to the above-mentioned form, You may arrange | position the 2nd terminal part 203 in the opening part 131 directly via a connection means. In this case, as the first connecting means, an upper terminal formed by extending the tip of the second terminal portion 203 to the vicinity of the second wall portion 13 and curving one end above the second terminal portion 203. You may wear. At this time, if the lower end portion of the curved end portion is brought into contact with the second terminal portion 203 and fixed to the second terminal portion 203, the other end portion is connected to the second terminal portion 203. 5 can be formed.

  As the second connection means, for example, the upper terminal described as the first connection means includes the lower horizontal plate portion and the upper horizontal plate portion extending from the lower horizontal plate portion to the second wall portion 13 side. Form in steps. The lower horizontal plate portion may be fixed to the body portion 201 of the connection bar 20 with a screw so that a gap is provided between the upper horizontal plate portion and the bus bar side terminal portion. Moreover, you may comprise so that a bus bar mounted in the bus bar side terminal part of a connection bar may be pressed from upper direction using a cam and a link instead of an upper terminal.

  Next, the connection of the breaker 3 and the bus bar 5 using the connector 10 configured as described above will be described.

  First, the breaker 3 is mounted on the distribution board 1. Next, the connection bar 20 formed by the connection bar main body 21 and the connection terminal portion 22 is attached to the connector 10 and attached to the distribution board 1. At this time, along the number of input terminal portions 41 arranged in parallel with the breaker 3, the case body 11 corresponding to the number of the connector 10 is arranged in parallel.

  When attaching the connection bar 20 to the connector 10, the breaker-side terminal portion 202 of the connection bar 20 is connected to the first wall portion from the side portion side of the case main body 11 with the attachment wall portion 14 removed from the case main body 11. 12 are inserted into any one of the long holes 121. At this time, the connection bar 20 is appropriately bent by hand or a tool in accordance with the long hole 121 and the opening 131 used. When a plurality of case bodies 11 are arranged in parallel, the mounting wall portion 14 of each case body 11 is removed, and one or more connection bars 20 are attached to each case body 11. The breaker side terminal portion 202 of the connection bar 20 is mounted so as to protrude from the first wall portion 12, and the bus bar side terminal portion (second terminal portion 203 and connection terminal portion 22) is attached to the support plate portion 111 of the case body 11. It is disposed in the vicinity of a position where it abuts against the second wall portion 13 of the case body 11 while being supported.

  When the connector 10 is attached at a position facing the breaker 3, the bus bar 5 is inserted into the predetermined opening 131 of the second wall portion 13 and connected to the bus bar side terminal portion of the connection bar 20. The bus bar 5 is held in the gap between the upper terminal portion 222 and the lower terminal portion 223 of the connection terminal portion 22.

  Thereafter, the breaker side terminal portion 202 of the connection bar 20 is connected to the input terminal portion 41 of the breaker 3. At this time, if the height positions of the terminal block 4 of the breaker 3 and the breaker-side terminal portion 202 of the connection bar 20 protruding from the connector 10 are shifted, the body portion 201 of the connection bar 20 is removed by hand or a tool. The breaker-side terminal portion 202 is inserted into the input terminal portion 41 after being bent appropriately and used so as to be substantially horizontal. Then, the screw is inserted into the screw insertion hole 204 and fastened.

  As described above, since the connector 10 of the embodiment is formed by laminating thin copper plates, the connector 10 can be flexed freely, and the terminal block 4 of the breaker 3 and the long hole 121 of the connector 20 Even if the position is shifted, it can be easily connected. Therefore, since the breaker 3 can be mounted on the distribution board 1 without adjusting the height position of the breaker 3, a height adjustment base for adjusting the height with the connector 10 is not required. Moreover, since the connection bar main body 21 can be manufactured by one type, the mold for manufacturing the connection bar main body 21 can be manufactured in one piece, and the manufacturing cost can be reduced.

  Furthermore, since the allowable current of the connection bar 20 can be increased by forming the connection bar main body 21 by laminating a plurality of thin copper plates, the connector 10 itself can be made compact. That is, for example, since the connection terminal for 400A can be connected to the dimension of the connector 10 for 200A, the distribution board 1 itself can be made compact.

  In addition, the connector of this invention is not limited to the above-mentioned form. For example, as shown in FIG. 7, a connection bar 30 provided with a flexible flat knitted body portion may be attached. The connection bar 30 according to FIG. 7 is formed of a flat knitted body portion 301, and a first terminal portion 302 and a second terminal portion 303 disposed at both ends of the body portion 301. At this time, the second terminal portion 303 may be disposed in the opening 131 of the second wall portion 13 as it is, or the connection terminal portion 21 may be mounted as in the above-described form. The first terminal portion 302 and the second terminal portion 303 are formed by laminating thin copper plates having the dimensions shown in the above embodiment. In this case, large bending of the connection bar 30 can be performed by the body portion 301, and slight bending can be performed by the first terminal portion 302. This connection bar 30 can also increase the allowable current.

It is a partial cross section figure which shows the distribution board of the state which connected the breaker and the bus-bar with the connector of this invention. It is the same top view. It is a perspective view which shows the connector of one form of this invention. It is a perspective view which shows the state which connected two connectors of FIG. FIG. 4 is an exploded perspective view showing a connection bar and a cylindrical insulating cover covering the connection bar in FIG. 3. It is a front view which shows the state which bent the connection bar of FIG. It is a perspective view which shows another form of a connection bar.

Explanation of symbols

1, distribution board 3, breaker 4, terminal block 5, bus bar 7, protective cover 10, connector 11, case body 12, first wall 121, long hole (hole)
13, second wall 131, opening 14, mounting wall 20, connection bar 201, body 202, breaker side terminal (first terminal)
203, 2nd terminal part 21, connection bar main body 22, connection terminal part 222, upper terminal part 223, lower terminal part

Claims (5)

A connector for connecting a breaker disposed on a distribution board and a bus bar,
A first wall portion having a hole portion and a second wall portion having an opening portion are provided on opposing surfaces, and is detachable between the first wall portion and the second wall portion. A case body with a side wall,
A connection bar that is inserted through the hole of the first wall portion and has one end connected to the breaker and the other end connected to the bus bar inserted into the opening of the second wall portion;
Configured with
The connection bar is formed with flexibility, and has a body portion and terminal portions disposed at both ends of the body portion.   The connector according to claim 1, wherein the connecting bar is formed by laminating thin copper plates, and the body portion and the terminal portion are integrally formed.   2. The connector according to claim 1, wherein the connection bar includes a terminal portion formed by laminating thin copper plates and a body portion formed in a flat knitted shape connected to the terminal portion. A first wall portion having a hole portion and a second wall portion having an opening portion are provided on opposing surfaces, and is detachable between the first wall portion and the second wall portion. A case main body formed with a side wall; a body formed with flexibility; a body part; and terminal parts disposed at both ends of the body part; and one of the terminal parts A connector having a connection bar inserted through the hole of the first wall and projecting from the main body case;
A breaker to which one of the terminal portions of the connection bar is connected;
A bus bar inserted into the opening of the second wall and connected to the other terminal of the connection bar;
A distribution board characterized in that it is configured to include. The distribution board according to claim 4, wherein the connector is equipped with a connection bar formed by laminating thin copper plates.

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