JP2005073369A - Main line branch board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a main line branch board in which even a terminal larger than a specified size can be connected electrically with the secondary terminal while ensuring a sufficient insulation spatial distance without providing an interconnection terminal block. <P>SOLUTION: The main line branch board comprises a plurality of buses 10(A-C) extending vertically, a plurality of circuit breakers 17 arranged vertically while directing the primary terminal 17b toward the bus 10(A-C) side, and branch conductors 23L and 23R for electrically connecting the primary terminals 17a of the circuit breakers 17, respectively, with the buses 10(A-C) wherein a branch line 37 is connected electrically with the secondary terminal 17c of the circuit breaker 17 through a terminal 35. Connecting conductors 34(A-D) having one end part 34a being connected with the secondary terminal 17c of the circuit breaker 17 and the other end part 34b being connected with the terminal 35 are provided and the other end parts 34b of vertically adjacent connecting conductors 34(A-D) are arranged alternately in the depth direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a trunk branch board having a circuit breaker.

  In general, the main branch board includes a plurality of bus bars extending in the vertical direction, a plurality of wiring circuit breakers arranged in parallel in the vertical direction with the primary side terminal facing the bus side, and A branch conductor that electrically connects the primary side terminal to the busbar and a branch line that electrically connects to the secondary side terminal of the circuit breaker are provided (see, for example, Patent Documents 1 and 2).

  By the way, when the terminal crimped to the branch line is electrically connected to the secondary terminal of the circuit breaker, the vertical interval of the secondary terminal is set in advance, Only terminals having a size specified by the manufacturer can be connected. If terminals having a size larger than the specified size are connected, a sufficient insulation space distance cannot be secured.

For this reason, in order to use a thick branch line, when connecting a terminal of a size larger than the specified size, it is necessary to separately provide a terminal block for relay connection.
Japanese Patent Laid-Open No. 11-18216 JP 2002-34109 A

  However, if the relay connection terminal block is provided separately, the connection for electrically connecting the secondary terminal of the circuit breaker for wiring and the secondary connection terminal block to the relay connection terminal block Further lines and the like are required, the number of parts increases, the number of connecting steps increases, and the cost increases.

  In addition, it is necessary to secure an installation space for the relay connection terminal block, and there is a problem that heat generation increases as the number of electrical connection points increases.

  The present invention has been made to solve the above-described problem. Even if the terminal is larger than the specified size, the secondary terminal is provided with a sufficient insulation space distance without providing a relay connection terminal block. The present invention provides a trunk branch board that can be electrically connected.

In order to solve the above-described problems, the present invention includes a plurality of bus bars extending in the vertical direction, a plurality of circuit breakers arranged in parallel in the vertical direction with the primary side terminal facing the bus side, A branch conductor that electrically connects the primary side terminal of the circuit breaker to the bus, and the secondary terminal of the circuit breaker is electrically connected to the branch line via the terminal. In the main branch board
One end of the wiring breaker is connected to the secondary terminal, and the other end of the connecting conductor is connected to the terminal. The other ends of the connecting conductors adjacent in the vertical direction are staggered in the depth direction. It is intended to provide a trunk branch board characterized by being set to be.

  According to the present invention, the other end of the connecting conductor having one end connected to the secondary side terminal of the circuit breaker for wiring is set so that the other end adjacent to the vertical direction is staggered in the depth direction. Therefore, even if a terminal larger in size than the terminal specified by the manufacturer of the circuit breaker for wiring is connected to the branch line, the connecting conductor must be connected while securing a sufficient insulation space distance in the depth direction. The terminal of the branch line can be electrically connected to the secondary terminal of the circuit breaker.

  Further, in order to make the other end portions of the connecting conductors staggered in the depth direction, a part or all of the connecting conductors may be bent, for example, in a Z-shape. There is no need to provide a separate stand, and there is no need for parts for mounting this relay connection terminal block, connection lines for electrically connecting the secondary terminal of the circuit breaker for wiring and the terminal block for relay connection, etc. As a result, the number of parts is reduced and the number of connecting steps is slightly increased, so that the cost can be reduced.

  Further, it is not necessary to secure a space for installing the relay connection terminal block as in the prior art, and the number of electrical connection points does not increase so much, so heat generation is reduced.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an open-type main branch board 1 to which protective panels 2 and 3 are attached, in which (a) is a plan view, (b) is a front view, and (c) is a right side view. 2 is an open-type trunk board 1 with the protective panels 2 and 3 removed, where (a) is a plan view, (b) is a front view, (c) is a right side view, and FIG. It is a rear view of 2 (b).

  Referring to the plan sectional view of FIG. 4, the main branching board 1 includes a plurality of (four in this embodiment) vertical frames 5 (A to D) and upper ends of the vertical frames 5 (A to D). There is provided a vertically-long rectangular branch board body 8 composed of a panel-like upper frame 6 to be connected and a panel-like lower frame 7 that connects the lower ends of the vertical frames 5 (A to D).

  The rear vertical frames 5C and 5D are located at the corners between the rear edge portions and the left and right side edge portions of the upper and lower frames 6 and 7, and the front vertical frames 5A and 5B are located on the upper and lower frames 6 and 7, respectively. It is located on the left and right side edges deeper than the front edge.

  In the inside of the above-mentioned branch board body 8, between the left vertical frames 5A and 5C and the right vertical frames 5B and 5D, it is located behind the front vertical frames 5A and 5B and extends in the vertical direction. Phase buses 10 (A to C) are provided, and each bus bar 10 (A to C) is arranged in a staircase pattern shifted in the front-rear direction and the left-right direction.

  The lower surface of the upper frame 6 and the upper surface of the lower frame 7 corresponding to the arrangement positions of the buses 10 (A to C) are the rear view of FIGS. 4 and 5A and the side view of FIG. , An independent L-shaped bracket 11 is fixed by bolts and nuts 12 for each bus 10 (A to C).

  Each of the bus bars 10 (A to C) is formed on the bracket 11 corresponding to an upper end portion and a lower end portion in a state where a vertical slit (gap) 10c is formed between the pair of left and right conductive materials 10a and 10b. The bolts 26 that are applied from the rear and are prevented from rotating by the anti-rotation metal fittings 25 that are fitted to the rear surfaces of the respective bus bars 10 (A to C) are inserted through the through holes of the brackets 11 from the slits 10c and forward. By projecting and screwing the nut 27 into the projecting bolt 26 from the front, the upper end portion and the lower end portion of each bus bar 10 (A to C) are fixed to the respective brackets 11.

  A power supply side entrance conductor 15 [see FIG. 2A] is electrically connected to each of the buses 10 (A to C).

  In front of the left and right front vertical frames 5A and 5B, a plurality of (11 in each embodiment, left and right) circuit breakers 17 are operated in the vertical direction with the switch (operation unit) 17a being operated sideways. The circuit breakers 17 for wiring are arranged on the front surfaces of the front vertical frames 5A and 5B via a mounting base 18 (see FIG. 4) attached by hooks 19 and screws 19a. Each is fixed with a fixing screw (not shown). An insulating barrier attachment / spacer 40 capable of attaching an insulating barrier projecting in the left-right direction is interposed in each of the gaps, so that internal impurities can be blinded by the spacer function.

  Each of the wiring breakers 17 of the left front vertical frame 5A has three primary terminals 17b directed to the right (inside), secondary terminals 17c directed to the left (outside), and the right front vertical In each circuit breaker 17 of the frame 5B, three primary side terminals 17b are directed to the left side (inside), and the secondary side terminal 17c is directed to the right side (outside).

  Each primary terminal 17b of each of the left circuit breakers 17 on the left side is electrically fixed with one end of a branch conductor 23L bent in an inverted Z shape in plan view in FIG. At the same time, one end of a branch conductor 23R bent in a Z shape in a plan view of FIG. 4 is fixed to each primary side terminal 17b of each right circuit breaker 17 by a bolt 24. Are electrically connected.

  The other ends of the branch conductors 23L of the left wiring circuit breakers 17 are respectively applied to the corresponding bus bars 10 (A to C) from the front, and the branches of the right wiring circuit breakers 17 are branched. The other end of the conductor 23R is applied to the other end of the corresponding branch conductor 23L from the front.

  Then, the bolts 26 that are prevented from rotating by the anti-rotation metal fittings 25 fitted to the rear surfaces of the respective bus bars 10 (A to C) are inserted through the through holes at the other ends of the branch conductors 23L and 23R from the slit 10c. By projecting forward and screwing a nut 27 into the projecting bolt 26 from the front, the other end portions of the branch conductors 23L and 23R are fixed and electrically connected to the bus bars 10 (A to C). become.

  As shown in detail in FIG. 6, the interval t in the vertical direction of the secondary terminal 17c of each wiring breaker 17 is set in advance, and when the crimp terminal is electrically connected, the vertical position Only crimp terminals of a size specified by the manufacturer of the circuit breaker for wiring can be connected so that the crimp terminals do not interfere with each other.

  However, in order to use the thick branch line 37, there is a case where it is desired to connect the crimp terminal 35 having a size larger than the specified size.

  Therefore, the crimp terminals 35 are not directly connected to the secondary terminals 17c of the wiring breakers 17 but are connected via the connecting conductors 34 (A, B).

  That is, the connecting conductor 34 (A, B) is provided with a linear connecting conductor 34A and a connecting conductor 34B bent in a Z shape, and each secondary side terminal 17c of each circuit breaker 17 is provided. In FIG. 6, one end portion 34a of each of the connecting conductors 34A, 34B is alternately arranged in the vertical direction in FIG. 6 in the order of Z-shaped connecting conductor 34B, linear connecting conductor 34A, Z-shaped connecting conductor 34B,. Are fixed with bolts 28 and electrically connected.

  Accordingly, the other end portions 34b of the connecting conductors 34A and 34B adjacent in the vertical direction are staggered in the depth direction.

  When the bolts and nuts 36 are fixed and electrically connected to the other end portions 34b of the connecting conductors 34A and 34B, which are staggered in the depth direction, via the crimp terminals 35 having a size larger than the specified size, Of the crimp terminals 35 do not interfere with each other.

  A first protective panel 2 that is fitted between the inner side surfaces of the left and right circuit breakers 17 and between the lower surface of the upper frame 6 and the upper surface of the lower frame 7 is provided on the front side of the branch board body 8. The first protective panel 2 has a lower edge portion of the positioning pin 31 inserted into a positioning hole (not shown specifically) formed on the upper surface of the lower frame 7, and the upper edge portion of the first protective panel 2 is connected to the upper frame 6. The bolt 30 is detachably fixed to cover the front side of the bus 10 (A to C), the branch conductors 23L and 23R, and the primary terminal 17b of the circuit breaker 17 for wiring.

  The left and right second protection panels 3 are fitted between the outer surfaces of the left and right circuit breakers 17 and between the lower surface of the upper frame 6 and the upper surface of the lower frame 7 and project laterally from the branch board body 8. The upper and lower portions of each second protective panel 3 are provided above the first stage circuit breaker 17 and the eleventh stage circuit breaker 17 along the upper frame 6 and the lower frame 7, respectively. Upper and lower arm portions 3a and 3b extending downward to the vicinity of the side edge of the first protective panel 2 are formed.

  A hinge pin 3c is provided at the tip of each arm portion 3a, 3b, and a hinge hole (not shown specifically) formed on each of the lower surface of the upper frame 6 and the upper surface of the lower frame 7 with the hinge pins 3c. The second protective panel 3 is supported by the upper frame 6 and the lower frame 7 so as to be opened and closed by the hinge pin 3c. In the closed position (see the solid line in FIG. 1A), the wiring breaker 17 is connected. The front side of the secondary side terminal 17c of the wiring breaker 17 is opened at the open position (see the two-dot chain line in FIG. 1A). The second protective panel 3 is fixed to the upper frame 6 and the lower frame 7 with bolts 32 in the closed position.

  The said 1st protection panel 2 and the 2nd protection panel 3 cover the front side of the switchboard main body 8 in the state which exposed the switch (operation part) 17a of each circuit breaker 17 so that operation was possible. A blank cover 33 covers the gap between the stage circuit breaker 17 and the upper arm portion 3 a of the second protective panel 3.

  According to the trunk branch board 1 configured as described above, the other end of the linear connecting conductor 34A and the Z-shaped connecting conductor 34B in which one end 34a is connected to the secondary terminal 17c of the circuit breaker 17 for wiring. 34b is the case where the crimping terminal 35 larger in size than the terminal specified by the manufacturer of the circuit breaker for wiring is connected to the branch line 37 because the other end portions 34b adjacent in the vertical direction are staggered in the depth direction. Even if there is a sufficient insulation space distance in the depth direction, the crimping terminal 35 of the branch line 37 is electrically connected to each secondary terminal 17c of each circuit breaker 17 via the connecting conductors 34A and 34B. Will be able to connect.

  Further, in order to make the other end portions 34b of the connecting conductors 34 (A, B) alternate in the depth direction, a part of the connecting conductors 34B of the connecting conductors 34 (A, B) is bent in a Z-shape. Therefore, there is no need to provide a separate terminal block for relay connection as in the past, and the secondary terminal of the circuit breaker for connecting the terminal block for relay connection and the terminal block for relay connection A connection line or the like for electrically connecting the terminals is not necessary, the number of parts is reduced, and the number of connection steps is slightly increased, so that the cost can be reduced.

  Further, it is not necessary to secure a space for installing the relay connection terminal block as in the prior art, and the number of electrical connection points does not increase so much, so heat generation is reduced.

  FIG. 7 shows a connecting conductor 34 (C, D) according to a modified example. The connecting conductor 34 (C, D) includes a first connecting conductor 34 C bent in a Z-shape and a larger Z-shape. A bent second connecting conductor 34D is provided, and the secondary side terminals 17c of the respective circuit breakers 17 are alternately arranged in the vertical direction. In FIG. 7, the first connecting conductor 34C and the second connecting conductor are provided. 34D, the first connecting conductor 34C,... Are fixed in electrical connection by fixing one end 34a of each connecting conductor 34C, 34D with a bolt 28.

  Accordingly, the other end portions 34b of the connecting conductors 34C and 34D adjacent in the vertical direction are staggered in the depth direction.

  When the bolts and nuts 36 are respectively fixed and electrically connected to the other end portions 34b of the connecting conductors 34C and 34D, which are staggered in the depth direction, via the crimp terminals 35 having a size larger than the specified size, Of the crimp terminals 35 do not interfere with each other.

  In this case, in order to make the other end portions 34b of the connecting conductors 34 (C, D) alternate in the depth direction, the entire connecting conductors 34 (C, D) are bent in a Z-shape. become.

  In the above-described embodiment, the circuit breaker 17 for wiring is provided on both sides of the branch board main body 8, but the type in which the circuit breaker 17 for wiring is provided on either side of the branch board main body 8 may be used.

FIG. 2 is a main branch board with a protection panel attached, (a) is a plan view, (b) is a front view, and (c) is a right side view. It is the trunk line branch board which removed the protection panel, (a) is a top view, (b) is a front view, (c) is a right view. FIG. 3 is a rear view of FIG. It is a plane sectional view of a main line branch board. It is the fixing structure of a bus-bar, (a) is a rear view, (b) is a side view. The positional relationship of a connecting conductor and a crimp terminal is shown, (a) is a top view, (b) is a front view, (c) is a side view. The positional relationship of the connection conductor and crimp terminal of a modification is shown, (a) is a top view, (b) is a front view, (c) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Trunk branch board 8 Branch board main body 17 Circuit breaker 17b Primary side terminal 17c Secondary side terminal 23L, 23R Branch conductor 34 (AD) Connecting conductor 34a One end part 34b Other end part 35 Crimp terminal 37 Branch line

Claims (1)

A plurality of bus bars extending in the vertical direction, a plurality of circuit breakers arranged in parallel in the vertical direction with the primary side terminal facing the bus side, and the primary side terminals of the circuit breakers for the bus A branch conductor electrically connected to the secondary side terminal of the circuit breaker for wiring, in a trunk branch board in which the branch line is electrically connected via the terminal,
One end of the wiring breaker is connected to the secondary terminal, and the other end of the connecting conductor is connected to the terminal. The other ends of the connecting conductors adjacent in the vertical direction are staggered in the depth direction. A trunk branch board characterized by being set to be.

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