Distribution board

Abstract

To provide a distribution board on which electric connection can be easily established.SOLUTION: A distribution board includes: a terminal base 2 that includes a primary-side terminal portion 2A which is electrically connected to a primary-side power transmitting member 7, and a secondary-side terminal portion 2B which is electrically connected to the primary-side terminal portion 2A; a circuit breaker 4 that includes a power supply terminal portion 40 to which power is supplied; a connection conductor 3 that includes a primary-side portion 30 which is electrically connected to the secondary-side terminal portion 2B and a secondary-side portion 31 which is electrically connected to the power supply terminal portion 40, and that electrically connects the terminal base 2 to the circuit breaker 4; and a case 5 in which the terminal base 2, the circuit breaker 4, and the connection conductor 3 are accommodated. The connection conductor 3 is formed into a plate-like shape having one end side on which the primary-side portion 30 is disposed and the other end side on which the secondary-side portion 31 is disposed. The primary-side portion 30 includes a one end-side insertion portion to be inserted to the secondary-side terminal portion 2B. At the secondary-side terminal portion 2B, when the one end-side insertion portion is inserted thereto, electrical connection between the terminal base 2 and the connection conductor 3 is established.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a distribution board.

Background Art

[0002] As a conventional distribution board, there is one described in Patent Document 1. This distribution board includes, inside a box body, a switch for emergency equipment, a connection terminal body that is connected to a power supply circuit introduced into the box body and incorporated in a terminal block, and a feed wire having one end connected to an input end of the switch for emergency equipment and the other end connected to the connection terminal body. The connection terminal body includes a frame member formed of a conductive material, and the frame member includes a protruding piece and a fixing screw screwed into the protruding piece. According to this distribution board, with the fixing screw inserted through the other end of the feed wire, by tightening the fixing screw, the feed wire is connected to the connection terminal body, and electricity supplied from outside the box body through the power supply circuit can be supplied to the switch for emergency equipment through the connection terminal body and the feed wire.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the distribution board described in Patent Document 1 above, in order to supply electricity from the power supply circuit to the switch for emergency equipment, the connection terminal body and the switch for emergency equipment are electrically connected via the feed wire. Therefore, in the distribution board described in Patent Document 1 above, it is necessary to route the feed wire inside the box body, and it takes time to electrically connect the connection terminal body and the switch for emergency equipment.

[0005] In addition, in order to supply electricity from the power supply circuit to the emergency equipment switch, it is necessary to electrically connect the feeder line and the connection terminal body. Here, in the distribution board described in Patent Document 1, in order to electrically connect the feeder line and the connection terminal body, after inserting the fixing screw through the other end of the feeder line, it is necessary to screw the fixing screw into the protruding piece. Therefore, in the distribution board described in Patent Document 1, it takes time to electrically connect the feeder line and the connection terminal body. Note that the above problems can occur not only in the emergency equipment switch but also in switches (circuit breakers) such as main switches and branch switches in general.

[0006] Therefore, an object of the present invention is to provide a distribution board that enables easy electrical connection.

Means for Solving the Problems

[0007] The present invention includes a terminal block having a primary terminal portion electrically connected to a primary side power transmission member for transmitting electricity, a secondary terminal portion electrically connected to the primary terminal portion, a circuit breaker having a power supply terminal portion to which electricity is supplied, a primary side portion electrically connected to the secondary terminal portion, and a secondary side portion electrically connected to the power supply terminal portion, a connection conductor for electrically connecting the terminal block and the circuit breaker, and a case for housing the terminal block, the circuit breaker, and the connection conductor. The connection conductor is configured in a plate shape with the primary side portion at one end side and the secondary side portion at the other end side. The primary side portion of the connection conductor includes an insertion portion at one end to be inserted into the secondary terminal portion. The secondary terminal portion is configured to electrically connect the terminal block and the connection conductor when the insertion portion at one end is inserted. This is a distribution board characterized by this.

[0008] According to the distribution board having the above configuration, since the connection conductor is configured in a plate shape, it is not necessary to route the connection conductor in the case. Also, since the insertion portion at one end, which is the primary side portion of the connection conductor, is inserted into the secondary terminal portion, the terminal block and the connection conductor can be electrically connected, so that the electrical connection between the terminal block and the connection conductor can be facilitated.

[0009] Also, in the distribution board of the present invention, a plurality of the circuit breakers are housed in the case, the connection conductor electrically connects the terminal block and the plurality of circuit breakers, and a plurality of other-end insertion portions to be inserted into respective power supply terminal portions of the plurality of circuit breakers are formed on the other-end side of the connection conductor. The power supply terminal portion may be configured to electrically connect the circuit breaker and the connection conductor when the other-end insertion portion is inserted therein.

[0010] According to the distribution board having the above configuration, by inserting each other-end insertion portion into the corresponding power supply terminal portion, the plurality of circuit breakers and the connection conductor can be electrically connected, so that the electrical connection between the plurality of circuit breakers and the connection conductor can be facilitated.

Advantages of the Invention

[0011] As described above, according to the present invention, since the terminal block and the connection conductor can be electrically connected, a distribution board capable of facilitating electrical connection can be provided.

Brief Description of the Drawings

[0012]

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Embodiments for Carrying Out the Invention

[0013] Hereinafter, the distribution board 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 19. The distribution board 1 of the present embodiment is, for example, a distribution board installed in a house, and is used to distribute and supply the electricity drawn into the house from a transmission and distribution line through an external device such as a watt-hour meter to loads such as electrical appliances in the house. As shown in FIG. 1, this distribution board 1 includes a terminal block 2 electrically connected to a primary side power transmission member 7 that sends electricity, a circuit breaker 4 capable of interrupting a circuit for supplying electricity to a load, a connection conductor 3 that electrically connects the terminal block 2 and the circuit breaker 4, and a case 5 that houses the terminal block 2, the circuit breaker 4, and the connection conductor 3. Note that in FIG. 1, for easier understanding of the configuration of the distribution board 1, the distribution board 1 with the inside of the case 5 opened is shown for convenience.

[0014] Hereinafter, in the distribution board 1, the "left-right direction" corresponds to the left and right in FIG. 1, the "up-down direction" corresponds to the up and down, and the "front-back direction" corresponds to the direction orthogonal to the up-down and left-right directions (the front and back directions of the paper surface in FIG. 1). Also, the primary side terminal portion 2A side of the terminal block 2 is specified as the "primary side", and the secondary side terminal portion 2B side is specified as the "secondary side" as the "primary and secondary direction", and the terminal portion 21b side of the L1 pole is specified as the "L1 side", and the terminal portion 21c side of the L2 pole is specified as the "L2 side" as the "L1, L2 direction". Note that in the present embodiment, it is set such that the "left-right direction" is the same direction as the "L1, L2 direction", and the "up-down direction" is the same direction as the "primary and secondary direction", but depending on the orientation of the terminal block 2, for example, the "left-right direction" may be the "primary and secondary direction", and the "up-down direction" may be set as the "L1, L2 direction". Also, the positions of the terminal portion 21b of the L1 pole and the terminal portion 21c of the L2 pole of the terminal block 2 may be opposite. In this case, the L1 side and the right side, and the L2 side and the left side are set in the same direction.

[0015] As shown in FIG. 1, the terminal block 2 includes a primary-side terminal portion 2A electrically connected to the primary-side power transmission member 7 and a secondary-side terminal portion 2B electrically connected to the connection conductor 3. The terminal block 2 of the present embodiment includes a terminal portion 21 electrically connecting the primary side (power supply side) and the secondary side (load side), and a base 20 to which the terminal portion 21 is attached. In the terminal block 2 of the present embodiment, as shown in FIGS. 1 and 2, three terminal portions 21a, 21b, and 21c are provided on the base 20. Therefore, the terminal block 2 of the present embodiment is a three-pole type in which 21a is the N pole, 21b is the L1 pole, and 21c is the L2 pole. These three terminal portions 21a, 21b, and 21c are arranged side by side in the L1 and L2 directions.

[0016] As shown in FIGS. 2 to 11, the base 20 of the present embodiment includes a base body 200 attached to the case 5 and a wall portion 201 provided on the base body 200. The base body 200 includes a primary-side base portion 2000 located on the primary side in the primary and secondary directions of the terminal block 2 and a secondary-side base portion 2001 located on the secondary side opposite to the primary-side base portion 2000. Since the base 20 of the present embodiment has insulating properties, it can prevent an operator from touching and getting an electric shock.

[0017] In the primary-side base portion 2000 of the present embodiment, as shown in FIGS. 2, 5, and 10, the primary-side end face 2000a is formed in a convex shape protruding to the primary side. Further, as shown in FIGS. 3, 5, and 11, the primary-side base portion 2000 includes a primary accommodation portion 2000B in which a primary-side portion 210 described later is accommodated when the terminal portion 21 is attached to the base body 200. The primary accommodation portion 2000B is formed by drilling from the front surface of the primary-side base portion 2000 to the rear side. Specifically, as shown in FIGS. 3 and 11, the primary accommodation portion 2000B of the present embodiment is composed of a female portion accommodation hole 2000Ba in which the female portion 210A is accommodated and a male portion insertion hole 2000Bb into which the male portion 210B is inserted. In the present embodiment, the female portion accommodation hole 2000Ba is formed wider than the male portion insertion hole 2000Bb in the L1 and L2 directions and in the primary and secondary directions. On the other hand, the male portion insertion hole 2000Bb communicates with the female portion accommodation hole 2000Ba and is formed longer than the female portion accommodation hole 2000Ba on the rear side.

[0018] In this embodiment, as shown in FIG. 3, three primary accommodating portions 2000B are formed in the L1 and L2 directions. And, as shown in FIG. 5, the central primary accommodating portion 2000B in the L1 and L2 directions is arranged on the primary side more than the other primary accommodating portions 2000B. Note that, in the primary side base portion 2000 of this embodiment, a fixing portion (screw hole) 2000A for fixing the central terminal portion 21a in the L1 and L2 directions to the base main body 200 is formed.

[0019] The secondary side base portion 2001 of this embodiment includes a secondary accommodating portion 2001B for accommodating a secondary side portion 211, which will be described later, as shown in FIGS. 2, 8 to 11. This secondary accommodating portion 2001B is formed by drilling from the front surface of the secondary side base portion 2001 to the rear side. Also, in this embodiment, three secondary accommodating portions 2001B are formed in the L1 and L2 directions. In particular, the central secondary accommodating portion 2001B is arranged on the primary side more than the other secondary accommodating portions 2001B.

[0020] In the secondary side base portion 2001 of this embodiment, as shown in FIGS. 5 and 11, fixing portions (screw holes) 2001A for fixing the terminal portions 21b and 21c at both ends in the L1 and L2 directions to the base main body 200 are formed. Further, in the secondary side base portion 2001 of this embodiment, as shown in FIGS. 2, 5, 8 to 10, two mounting holes 2001C penetrating in the front-rear direction, which are used when mounting the base 20 to the case 5 (bottom plate portion 50), are formed.

[0021] In the secondary side base portion 2001 of this embodiment, as shown in FIGS. 2, 5, 8, and 9, the secondary side end surface 2001a is formed flat. In this secondary side end surface 2001a, as shown in FIGS. 2, 4, 8 to 11, communication holes 2001D extending in the primary and secondary directions and communicating with the secondary accommodating portion 2001B are formed. In this embodiment, three communication holes 2001Da, 2001Db, and 2001Dc are provided in the L1 and L2 directions. Further, in this embodiment, the central secondary accommodating portion 2001B is formed to the primary side more than the other secondary accommodating portions 2001B. Therefore, the central communication hole 2001Da in the L1 and L2 directions is formed longer on the primary side than the other communication holes 2001Db and 2001Dc.

[0022] The wall portion 201 isolates the juxtaposed terminal portions 21 from each other. In the base 20 of the present embodiment, as shown in FIGS. 3, 4, 6 to 11, the wall portion 201 protrudes forward and extends in the primary and secondary directions. Further, the wall portion 201 of the present embodiment includes two end wall portions 2010 provided at both ends in the L1 and L2 directions and two partition wall portions 2011 that partition the three terminal portions 21. The end wall portion 2010 of the present embodiment protrudes forward of the partition wall portion 2011, as shown in FIGS. 6, 7, and 11. On the other hand, the partition wall portion 2011 of the present embodiment is formed longer on the primary side than the end wall portion 2010, as shown in FIGS. 2, 6, 7, 10, and 11. Therefore, the primary side end face 2000a of the primary side base portion 2000 of the present embodiment is formed in a convex shape, as shown in FIGS. 2 and 5. Further, the partition wall portion 2011 of the present embodiment is formed thicker than the end wall portion 2010 in the L1 and L2 directions, as shown in FIGS. 2 to 4, 8 to 10.

[0023] The partition wall portion 2011 of the present embodiment includes a mounting portion 2012 for mounting a short-circuit member 6 described later on its front surface, as shown in FIGS. 2 to 4, 8 to 11. This mounting portion 2012 includes a placement portion 2012a for placing the short-circuit member 6 described later and a protruding portion 2012b protruding from the placement portion 2012a, as shown in FIGS. 9 and 11. This placement portion 2012a protrudes forward from the partition wall portion 2011. Further, the placement portion 2012a of the present embodiment has a flat secondary side surface. On the other hand, the protruding portion 2012b protrudes from the placement portion 2012a to the secondary side. Note that this mounting portion 2012 can be provided on a portion other than the partition wall portion 2011 as long as it supports the short-circuit member 6 arranged to short-circuit the terminal portions 21 (21b, 21c) located at both ends among the three terminal portions 21 from below, and can have a configuration other than the configuration including the placement portion 2012a and the protruding portion 2012b.

[0024] The terminal part 21 is attached to the base body 200. In the present embodiment, as shown in FIG. 2, three terminal parts 21 (21a, 21b, 21c) are arranged side by side on the base body 200 in the L1 and L2 directions. To avoid redundant explanations, hereinafter, one terminal part 21 will be described and applied to the other two terminal parts 21. As shown in FIG. 2, the terminal part 21 includes a primary side part 210 on the power supply side (primary side) as the primary side terminal part 2A, a secondary side part 211 on the load side (secondary side) as the secondary side terminal part 2B, and an electrical connection part 212 that electrically connects the primary side part 210 and the secondary side part 211.

[0025] The primary side part 210 fixes the end of the primary side power transmission member 7 to the terminal block 2. The primary side part 210 of the present embodiment is attached to the primary side base part 2000 by being housed in the primary housing part 2000B as shown in FIGS. 3 and 11. Specifically, the primary side part 210 of the present embodiment includes a female part 210A (specifically, a female screw member formed with a female screw) housed in the female part housing hole 2000Ba, and a male part 210B (specifically, a male screw member formed with a male screw, a washer through which the male screw member is inserted, and a pressing member) that is attached to the female part 210A and inserted into the male part insertion hole 2000Bb.

[0026] The secondary side portion 211 fixes the connection conductor 3 to the terminal block 2. As shown in FIGS. 2, 8, 9, and 11, this secondary side portion 211 is attached to the secondary base portion 2001 by being housed in the secondary housing portion 2001B. Specifically, the secondary side portion 211 of the present embodiment is formed in a cylindrical shape and includes a frame body 2110 having a hole portion 2110a and an insertion hole 2110b orthogonal to the hole portion 2110a, and an insertion member 2111 (specifically, a bolt) that is inserted into the hole portion 2110a of the frame body 2110 from a direction (front side) orthogonal to the direction in which the frame body 2110 extends (specifically, the primary and secondary directions) through the insertion hole 2110b. The frame body 2110 (specifically, the hole portion 2110a of the frame body 2110) of the present embodiment is housed in the secondary housing portion 2001B so as to communicate with the communication hole 2001D of the secondary base portion 2001, as shown in FIG. 11. Further, the insertion member 2111 of the present embodiment is arranged in the secondary housing portion 2001B in a state of extending in the front-rear direction.

[0027] The electrical connection portion 212 electrically connects the primary side power transmission member 7 and the connection conductor 3, as shown in FIGS. 1 and 16. This electrical connection portion 212 is composed of a plate-like member having conductivity (specifically, a copper plate). Further, as shown in FIGS. 2 and 11, this electrical connection portion 212 is arranged on the base body 200 so as to span the primary side base portion 2000 and the secondary side base portion 2001. Furthermore, as shown in FIGS. 3, 4, 8, and 11, this electrical connection portion 212 includes a primary side connection portion 2121 that electrically connects to the primary side power transmission member 7 and a secondary side connection portion 2122 that electrically connects to the connection conductor 3. In the present embodiment, three electrical connection portions 212 are arranged in parallel in the L1 and L2 directions. In particular, the central electrical connection portion 212 is arranged on the primary side with respect to the other electrical connection portions 212, as shown in FIG. 2. Also, as shown in FIGS. 8 and 11, the electrical connection portion 212 is attached to the base body 200 by fixing the fixing member 22 inserted through the electrical connection portion 212 to the fixing portions 2000A and 2001A.

[0028] As shown in FIGS. 3 and 11, the primary connection portion 2121 is disposed on the primary base portion 2000 so as to overlap the primary housing portion 2000B. This primary connection portion 2121 communicates with the primary housing portion 2000B and includes a male insertion hole 2121a through which the male portion 210B constituting the primary side portion 210 can be inserted.

[0029] In this embodiment, the primary terminal portion 2A is formed by screwing the male portion 210B inserted into the male insertion hole 2121a of the primary connection portion 2121 with the female portion 210A housed in the primary housing portion 2000B. Therefore, as shown in FIG. 3, the primary terminal portion 2A of this embodiment is configured as a so-called "insertion type" terminal portion that fixes by inserting the male portion 210B (male screw member) through the end portion of the primary power transmission member 7.

[0030] As shown in FIGS. 8 and 11, the secondary connection portion 2122 is disposed on the secondary base portion 2001 by being inserted into the hole portion 2110a of the frame body 2110 from the primary side. Further, this secondary connection portion 2122 is disposed along the frame body 2110 on the rear side within the hole portion 2110a. In this embodiment, as shown in FIG. 11, by inserting the secondary connection portion 2122 into the hole portion 2110a of the frame body 2110, the secondary terminal portion 2B is formed. Further, the secondary terminal portion 2B of this embodiment is configured as a secondary insertion portion into which the one-end side insertion portion 300 described later can be inserted. Specifically, this secondary terminal portion 2B is configured as a "clamping type" terminal portion that electrically connects by clamping the one-end side insertion portion 300 of the inserted connection conductor 3. Note that, as the "clamping type" terminal portion, in addition to the one in which the insertion member 2111 and the secondary connection portion 2122 clamp the one-end side insertion portion 300, for example, the insertion member 2111 and the hole portion 2110a of the frame body 2110 are not provided, and the secondary end surface 2001a side of the secondary connection portion 2122 is bent toward the primary side, and this bent portion presses the one-end side insertion portion 300 against the frame body 2110 side, so that the one-end side insertion portion 300 may be clamped by the secondary connection portion 2122 and the frame body 2110 (specifically, a quick-connect terminal).

[0031] As described above, the terminal portion 21 of the present embodiment includes a primary-side terminal portion 2A and a secondary-side terminal portion 2B. Also, as shown in FIG. 11, the primary-side terminal portion 2A and the secondary-side terminal portion 2B of the present embodiment include an electrical connection portion 212 (specifically, the primary-side terminal portion 2A includes a primary-side connection portion 2121, and the secondary-side terminal portion 2B includes a secondary-side connection portion 2122). Therefore, the primary-side terminal portion 2A and the secondary-side terminal portion 2B are electrically connected via the electrical connection portion 212. In the present embodiment, three primary-side terminal portions 2A (specifically, the primary-side terminal portions 2A of the N pole, L1 pole, and L2 pole) are provided on the primary-side base portion 2000, and three secondary-side terminal portions 2B (specifically, the secondary-side terminal portions 2B of the N pole, L1 pole, and L2 pole) are provided on the secondary-side base portion 2001. Further, each of the primary-side terminal portion 2A and the secondary-side terminal portion 2B of the N pole (at the center in the L1, L2 direction) is arranged more on the primary side than the other primary-side terminal portions 2A and secondary-side terminal portions 2B.

[0032] As shown in FIGS. 12 to 15, the connection conductor 3 is composed of a plate-shaped conductor having conductivity (specifically, a copper plate). The connection conductor 3 of the present embodiment includes a primary-side portion 30 electrically connected to the secondary-side terminal portion 2B, a secondary-side portion 31 electrically connected to a power supply terminal portion 40 described later, and a conductor main body 32 electrically connecting the primary-side portion 30 and the secondary-side portion 31. That is, the connection conductor 3 of the present embodiment is a member including the primary-side portion 30, the secondary-side portion 31, and the conductor main body 32 by bending a single copper plate. In the distribution board 1 of the present embodiment, as shown in FIGS. 1, 12, and 15, a plurality (specifically, three poles of the L1 pole, L2 pole, and N pole) of connection conductors 3 (3a, 3b, 3c) are arranged, and these connection conductors 3 are attached to the conductor attachment portion 501 of the case 5, so that they are arranged in the case 5.

[0033] The primary side portion 30 of the connection conductor 3 is arranged on one end side (the left side shown in FIGS. 1 and 12) rather than the secondary side portion 31. As shown in FIGS. 13 and 15, this primary side portion 30 (30a, 30b, 30c) includes an end side insertion portion 300 (300a, 300b, 300c) inserted into the secondary side terminal portion 2B, and an end side connection portion 301 (301a, 301b, 301c) connecting the end side insertion portion 300 and a conductor main body 32 described later. The end side insertion portion 300 of the present embodiment extends in a direction (specifically, downward) perpendicular to the conductor main body 32 extending in the left-right direction as shown in FIG. 12. In particular, in the present embodiment, the end side insertion portion 300a of the connection conductor 3a of the N pole extends downward more than the end side insertion portions 300b and 300c of the other connection conductors 3b and 3c. Further, as shown in FIGS. 12 to 15, the end side insertion portion 300 (300a, 300b, 300c) is formed such that the length (thickness) in the front-rear direction is shorter than the length (width) in the left-right direction. Furthermore, as shown in FIGS. 12, 13, and 15, the lower side of the end side insertion portion 300 (300a, 300b, 300c) of the present embodiment is formed such that the length in the left-right direction becomes shorter.

[0034] When the end side insertion portion 300 is inserted into the secondary side terminal portion 2B (secondary side insertion portion), the terminal block 2 and the connection conductor 3 are electrically connected. In the present embodiment, as shown in FIG. 16, the end side insertion portion 300 (300b) is inserted into the hole portion 2110a of the frame body 2110 from the secondary side and clamped by the insertion member 2111, so as to contact the secondary side connection portion 2122, and the terminal block 2 and the connection conductor 3 are electrically connected.

[0035] The end side connection portion 301 (301a, 301b, 301c) connects the end side insertion portion 300 extending downward and the conductor main body 32 (32a, 32b, 32c) extending in the left-right direction as shown in FIGS. 13 to 15. This end side connection portion 301 (301a, 301b, 301c) extends forward from the end on the side opposite to the side (lower side) inserted into the secondary side terminal portion 2B among the end side insertion portions 300 (300a, 300b, 300c), and is connected to the conductor main body 32 (32a, 32b, 32c).

[0036] The secondary side portion 31 of the connection conductor 3 is disposed on the other end side (the right side in FIGS. 1 and 12) than the primary side portion 30. That is, the connection conductor 3 is a member in which the primary side portion 30 is disposed on one end side and the secondary side portion 31 is disposed on the other end side. The secondary side portion 31 includes an other end side insertion portion 310 (310a, 310b, 310c) inserted into the power supply terminal portion 40, and an other end side connection portion 311 (311a, 311b, 311c) that connects the other end side insertion portion 310 and the conductor main body 32. As shown in FIG. 12, the other end side insertion portion 310 extends in a direction (specifically, downward) orthogonal to the conductor main body 32 extending in the left-right direction. By being inserted into the power supply terminal portion 40 described later, the other end side insertion portion 310 is configured as a so-called "plug-in terminal" that electrically connects the circuit breaker 4 and the connection conductor 3. Further, as shown in FIGS. 12, 13, and 15, a plurality of the other end side insertion portions 310 are arranged in the left-right direction in the present embodiment. Specifically, the other end side insertion portion 310 of the present embodiment includes a first other end side insertion portion 310A having a length (thickness) in the front-rear direction longer than the length (width) in the left-right direction, and a second other end side insertion portion 310B having a length (thickness) in the front-rear direction shorter than the length (width) in the left-right direction.

[0037] In the case of the present embodiment, as shown in FIG. 15, the connection conductor 3a of the N pole includes a first other end side insertion portion 310Aa as the other end side insertion portion 310 behind the conductor main body 32a. On the other hand, the connection conductors 3b and 3c of the L1 pole and the L2 pole include both the first other end side insertion portions 310Ab and 310Ac and the second other end side insertion portions 310Bb and 310Bc. Further, in the connection conductors 3b and 3c of the L1 pole and the L2 pole, the first other end side insertion portions 310Ab and 310Ac are located in front of the conductor main bodies 32b and 32c, and the second other end side insertion portions 310Bb and 310Bc are located behind the conductor main bodies 32b and 32c. And in each of the connection conductors 3b and 3c, the first other end side insertion portions 310Ab and 310Ac and the second other end side insertion portions 310Bb and 310Bc are alternately arranged in the left-right direction. In the present embodiment, as shown in FIG. 12, the first other end side insertion portion 310Ab and the second other end side insertion portion 310Bc, and the first other end side insertion portion 310Ac and the second other end side insertion portion 310Bb are arranged overlapping each other in the front-rear direction.

[0038] The other-end connection part 311 connects the other-end insertion part 310 and the conductor main body 32. Specifically, as shown in FIG. 15, the other-end connection part 311 of the present embodiment includes a first other-end connection part 311A (311Aa, 311Ab, 311Ac) that connects the conductor main body 32 and the first other-end insertion part 310A, and a second other-end connection part 311B (311Bb, 311Bc) that connects the conductor main body 32 and the second other-end insertion part 310B.

[0039] The conductor main body 32 extends within the case 5. As shown in FIG. 1, the conductor main body 32 (32a, 32b, 32c) of the present embodiment extends in the left-right direction above the terminal block 2 and the circuit breaker 4 within the case 5. Therefore, as shown in FIGS. 12 and 15, the conductor main body 32 of the present embodiment is formed in a substantially straight line shape. Further, this conductor main body 32 is connected to the one-end insertion part 300 and the other-end insertion part 310 via the one-end connection part 301 and the other-end connection part 311. In the present embodiment, as shown in FIGS. 14 and 15, the conductor main body 32a of the N pole is formed such that the length (width) in the vertical direction is longer than the length (thickness) in the front-rear direction, while the conductor main bodies 32b of the L1 pole and 32c of the L2 pole are formed such that the length (thickness) in the vertical direction is shorter than the length (width) in the front-rear direction.

[0040] The circuit breaker 4 is electrically connected to the terminal block 2 via the connection conductor 3. This circuit breaker 4 switches between conduction and non-conduction of the connected connection conductor 3 and the load device (for example, an electrical appliance) according to the open state and closed state of the handle. Specifically, as shown in FIG. 1, the circuit breaker 4 of the present embodiment is a branch breaker 4a. Also, in the present embodiment, a plurality (six) of branch breakers 4a are arranged in parallel in the left-right direction within the case 5.

[0041] On one side of the circuit breaker 4 (specifically, the upper side in FIG. 1), a power supply terminal portion 40 for supplying electricity is provided. This power supply terminal portion 40 is configured as a power supply insertion portion into which the other end side insertion portion 310 can be inserted. Therefore, the secondary side portion 31 of the connection conductor 3 (specifically, the other end side insertion portion 310) is inserted into this power supply terminal portion 40 (power supply insertion portion). Specifically, in the power supply terminal portion 40 of the present embodiment, a combination of the second other end side insertion portion 310Bb of the connection conductor 3b of the L1 pole and the first other end side insertion portions 310Ac, 310Aa of the connection conductors 3c, 3a of the L2 pole or N pole, or a combination of the second other end side insertion portion 310Bc of the connection conductor 3c of the L2 pole and the first other end side insertion portions 310Ac, 310Aa of the connection conductors 3b, 3a of the L1 pole or N pole is inserted. Here, the power supply terminal portion 40 of the present embodiment is configured as a so-called "plug-in type" terminal portion. Therefore, when the secondary side portion 31 of the connection conductor 3 (specifically, the other end side insertion portion 310) is inserted into the power supply terminal portion 40, the connection conductor 3 and the circuit breaker 4 are electrically connected.

[0042] The case 5 is rectangular and includes a bottom plate portion 50 and a rectangular frame portion 51 as shown in FIGS. 1 and 16. The bottom plate portion 50 is configured to be able to mount the terminal block 2 and the circuit breaker 4. Specifically, in the bottom plate portion 50 of the present embodiment, the terminal block 2 and the circuit breaker 4 are mounted on the front surface. Note that the bottom plate portion 50 of the present embodiment is formed in a rectangular shape where the left-right direction is longer than the up-down direction.

[0043] In the bottom plate portion 50, a window portion 500 that connects the inside and outside of the case 5 is formed by cutting out a part thereof. In the present embodiment, an insertion window portion 500a for passing the primary side power transmission member 7 into the case 5 from the outside and an insertion window portion 500b for leading out a load wiring (not shown) that extends from the load side terminal portion of the circuit breaker 4 and is connected to the load to the outside of the case 5 are provided. And the insertion window portion 500a and the insertion window portion 500b are arranged side by side in the same direction (left - right direction). Specifically, the insertion window portion 500a is disposed between the second frame side portion 510b described later and the terminal block 2 attached to the bottom plate portion 50, and the insertion window portion 500b is disposed between the second frame side portion 510b and the circuit breaker 4 attached to the bottom plate portion 50. In the present embodiment, as shown in FIG. 1, the insertion window portion 500a is disposed on the left side of the insertion window portion 500b.

[0044] In the bottom plate portion 50 of the present embodiment, a conductor attachment portion 501 for attaching the connection conductor 3 is provided. This conductor attachment portion 501 is provided along the longitudinal direction of a frame side portion (the first frame side portion 510a) described later. Further, this conductor attachment portion 501 is disposed on the side of the first frame side portion 510a with respect to the window portion 500.

[0045] The frame portion 51 includes four frame side portions (the first frame side portion 510a, the second frame side portion 510b, and two connection frame side portions 510c that connect the first frame side portion 510a and the second frame side portion 510b) that are respectively raised by protruding forward from the four outer peripheral edge portions of the rectangular bottom plate portion 50, and forms the outer peripheral wall of the case 5. Therefore, in the present embodiment, the first frame side portion 510a and the second frame side portion 510b are disposed opposite to each other in the vertical direction, and the two connection frame side portions 510c are disposed opposite to each other in the horizontal direction.

[0046] As shown in FIGS. 1 and 16, the primary power transmission member 7 of the present embodiment is inserted into the case 5 through the insertion window portion 500a and is electrically connected to the primary terminal portion 2A of the terminal block 2. This primary power transmission member 7 is formed as a linear wiring (specifically, a conductive wire). Further, as shown in FIG. 16, at the end of this primary power transmission member 7, a crimp terminal (specifically, a round crimp terminal) is attached by crimping (specifically, caulking), thereby being configured as an insertion terminal 70 through which the male portion 210B (male screw) can be inserted. Specifically, this insertion terminal 70 is formed in a flat plate shape having conductivity and includes an insertion hole 700 through which the male portion 210B can be inserted.

[0047] As shown in FIG. 16, the insertion terminal 70 of the present embodiment is fixed by the primary side portion 210 in a state of being overlapped with the primary side connection portion 2121. Specifically, with the insertion terminal 70 and the primary side connection portion 2121 overlapped so that the insertion hole 700 and the male portion insertion hole 2121a communicate with each other, the male portion 210B (male screw) is inserted into the communicating male portion insertion hole 2121a and the insertion hole 700, and the male portion 210B is screwed into the female portion 210A. Thereby, the insertion terminal 70 and the primary side connection portion 2121 can be electrically connected, and the insertion terminal 70 can be fixed by the primary side portion 210 (specifically, the male portion 210B and the female portion 210A). Therefore, the primary power transmission member 7 is electrically connected to the primary terminal portion 2A. In the present embodiment, as shown in FIG. 1, each of the three primary power transmission members 7 is electrically connected to the three primary terminal portions 2A.

[0048] As described above, in the distribution board 1 of the present embodiment, as shown in FIG. 1, the primary power transmission member 7 is connected from the primary side (power supply side) to the terminal block 2, and the connection conductor 3 is connected to the secondary side of the terminal block 2, and this connection conductor 3 is connected to the circuit breaker 4.

[0049] In this embodiment, as shown in FIG. 1, the terminal block 2, the circuit breaker 4, and the connection conductor 3 are housed in the case 5. The terminal block 2 and the circuit breaker 4 are housed in the case 5 by being attached to the bottom plate portion 50. Specifically, the terminal block 2 and the circuit breaker 4 are attached to the bottom plate portion 50 below the conductor attachment portion 501 and along the longitudinal direction (specifically, the left - right direction) of one frame side portion (the first frame side portion 510a). Therefore, the terminal block 2 and the circuit breaker 4 are arranged in parallel in the case 5. Also, the terminal block 2 and the circuit breaker 4 are attached above the window portion 500 on the bottom plate portion 50. In this embodiment, the terminal block 2 is provided on the left side of the circuit breaker 4.

[0050] Further, the secondary - side terminal portion 2B of the terminal block 2 and the power - supply terminal portion 40 of the circuit breaker 4 are arranged so as to face in the same direction (specifically, the upper side) in a direction (specifically, the up - down direction) orthogonal to the direction in which the terminal block 2 and the circuit breaker 4 are arranged in parallel (specifically, the left - right direction). Specifically, in this embodiment, the secondary - side terminal portion 2B and the power - supply terminal portion 40 are arranged facing the first frame side portion 510a, and the connection conductor 3 can be connected from the same direction.

[0051] As shown in FIG. 1, the secondary - side terminal portion 2B and the power - supply terminal portion 40 are arranged at the same position in the same direction. Here, in this embodiment, the terminal block 2 includes three terminal portions 21 each having a primary - side terminal portion 2A arranged on the primary side and a secondary - side terminal portion 2B arranged on the secondary side. Also, the three terminal portions 21 are arranged side by side in the direction in which the terminal block 2 and the circuit breaker 4 are arranged in parallel. On the other hand, the terminal portion 21a at the center in the parallel - arrangement direction is arranged closer to the primary side than the other two terminal portions 21b and 21c. Therefore, in this embodiment, the secondary - side terminal portions 2B of the other two terminal portions 21b and 21c are arranged at the same position in the same direction (in this embodiment, the up - down direction) as the power - supply terminal portion 40.

[0052] The connection conductor 3 is attached to the conductor attachment portion 501 of the case 5 and is housed in the case 5. Here, the conductor attachment portion 501 of the present embodiment is disposed between the terminal block 2 and the circuit breaker 4 and the first frame side portion 510a, and is provided along the longitudinal direction of the first frame side portion 510a. Therefore, the connection conductor 3 attached to the conductor attachment portion 501 is disposed between the terminal block 2 and the circuit breaker 4 and the first frame side portion 510a, and extends along the longitudinal direction of the first frame side portion 510a. Further, the connection conductor 3 is attached to the conductor attachment portion 501 in a state where one end side (primary side portion 30) is on the left side and the other end side (secondary side portion 31) is on the right side. Therefore, one end side insertion portion 300 extending in a direction (lower side) orthogonal to the conductor main body 32 protrudes toward the secondary side terminal portion 2B, and the other end side insertion portion 310 protrudes toward the power supply terminal portion 40.

[0053] In the present embodiment, as shown in FIGS. 18 and 19, a short-circuit member 6 may be attached to the terminal block 2. This short-circuit member 6 is used to electrically connect a plurality of terminal portions 21. The short-circuit member 6 of the present embodiment is used when converting a three-pole type (single-layer 3-wire type) terminal block 2 into a two-pole type (single-layer 2-wire type). Further, the short-circuit member 6 includes a connection portion 60 disposed on the front side of a pair of partition wall portions 2011, 2011 of the terminal block 2 so as to span between the terminal portions 21b and 21c at both ends among the three terminal portions 21a, 21b, and 21c, and a pair of extension portions 61 provided at both ends of the connection portion 60 and extending along the partition wall portion 2011 toward the terminal portions 21b and 21c at both ends to connect the respective terminal portions 21b and 21c. Note that the short-circuit member 6 of the present embodiment is formed of a conductive plate-like member (specifically, a copper plate).

[0054] As shown in FIG. 17, the connecting portion 60 is formed in a long plate shape. Specifically, the length of the connecting portion 60 is substantially equal to the distance between two of the three primary side terminal portions 2A arranged side by side (specifically, the primary side terminal portions 2Ab and 2Ac of the L1 pole and the L2 pole). Further, as shown in FIGS. 17 and 18, the connecting portion 60 of the present embodiment includes a supported portion 600 that is supported (supported from below) by the mounting portion 2012 when mounted on the terminal block 2. In the connecting portion 60 of the present embodiment, a short edge 60c that connects the long edge 60b on the side opposite to the long edge 60a where the supported portion 600 is formed is formed in a tapered shape that narrows the longitudinal interval of the connecting portion 60 as it progresses from the long edge 60a where the supported portion 600 is formed to the long edge 60b on the opposite side.

[0055] The supported portion 600 is provided so as to protrude between two extending portions 61 extending from both end sides at the long edge 60a of the connecting portion 60. Further, as shown in FIG. 18, when the short-circuit member 6 is attached to the terminal block 2, the supported portion 600 is disposed at a position overlapping the mounting portion 2012 in the front-rear direction. In the present embodiment, the length of the supported portion 600 (long edge 600a) is formed to be substantially the same as the distance between the two mounting portions 2012 provided on the terminal block 2. And this supported portion 600 is formed thinner than the distance between the front surface of the partition wall portion 2011 and the protruding portion 2012b. Therefore, as shown in FIG. 19, the supported portion 600 can be disposed between the front surface of the partition wall portion 2011 and the protruding portion 2012b. Further, the long edge 600a of the supported portion 600 of the present embodiment is formed flat. Therefore, when the short-circuit member 6 is attached to the mounting portion 2012, the long edge 600a of the supported portion 600 can be placed on the placement portion 2012a.

[0056] As shown in FIG. 17, the connection part 60 of the present embodiment is provided with a notch part 601. This notch part 601 is formed on the long edge 60b opposite to the long edge 60a of the connection part 60. Further, as shown in FIG. 18, this notch part 601 is formed at a position overlapping with the secondary accommodation part 2001B in the center in the L1 and L2 directions in the front-rear direction when the short-circuit member 6 is attached to the terminal block 2. Therefore, even after the short-circuit member 6 is attached, the operation of the insertion member 2111 accommodated in the secondary accommodation part 2001B can be facilitated.

[0057] The short-circuit member 6 includes an extension part 61 extending from the connection part 60. As shown in FIG. 17, this extension part 61 extends from the end of the long edge 60a of the connection part 60. Specifically, as shown in FIG. 19, when the connection part 60 is attached in the left-right direction of the terminal block 2, the extension part 61 extends from the connection part 60 so that the extension part 61 extends rearward. Further, as shown in FIG. 17, this extension part 61 includes a one-way extension part 610 extending from one end of the connection part 60 and an other-way extension part 611 extending from the other end. And the extension length of this extension part 61 is substantially the same as the distance from the front surface of the partition wall part 2011 to the electrical connection part 212 arranged on the base body 200, as shown in FIG. 19. Furthermore, this extension part 61 includes a terminal connection part 61b (6101, 6111) connected to the terminal part 21 and a connection part 61a (6100, 6110) connecting the connection part 60 and the terminal connection part 61b.

[0058] The terminal connection part 61b of this embodiment is electrically connected to the primary side terminal part 2A. As shown in FIG. 17, this terminal connection part 61b extends in a direction orthogonal to the longitudinal direction of the connection part 60 (specifically, the lower side in FIG. 18). In this embodiment, terminal connection parts 61b (6101, 6111) extend from both ends of the longitudinal direction of the connection part 60, respectively. Also, this terminal connection part 61b is formed in a flat plate shape. Therefore, as shown in FIG. 19, it can be overlapped with the primary side terminal part 2A (specifically, the primary side connection part 2121). In addition, since the terminal connection part 61b (short-circuit member 6) of this embodiment has conductivity, by overlapping the terminal connection part 61b and the primary side terminal part 2A, the terminal connection part 61b (short-circuit member 6) and the primary side connection part 2121 (primary side terminal part 2A) can be electrically connected. Further, as shown in FIG. 17, insertion holes 61d (specifically, insertion hole 6101A from one terminal connection part 6101 and insertion hole 6111A from the other terminal connection part 6111) for inserting the male part 210B of the primary side part 210 are formed in this terminal connection part 61b. Therefore, as shown in FIG. 19, in a state where the terminal connection part 61b (specifically, one terminal connection part 6101) is overlapped with the primary side connection part 2121, by inserting the male part 210B into the insertion hole 61d (6101A), the terminal connection part 61b can be fixed to the primary side terminal part 2A. Also, the short-circuit member 6 of this embodiment is provided with two terminal connection parts 61b. Therefore, by connecting each of the two terminal connection parts 61b to the primary side terminal parts 2Ab, 2Ac of the L1 pole and the L2 pole, the terminal parts 21b, 21c of the L1 pole and the L2 pole can be electrically connected.

[0059] As described above, according to the distribution board 1 having the above configuration, since the connection conductor 3 is configured in a plate shape, there is no need to route the connection conductor 3 in the case 5. Also, since the one-end side insertion part 300, which is the primary side part 30 of the connection conductor 3, is inserted into the secondary side terminal part 2B, the terminal block 2 and the connection conductor 3 can be electrically connected, so that the electrical connection between the terminal block 2 and the connection conductor 3 can be facilitated.

[0060] Specifically, in a conventional distribution board, it was necessary to route the feed wire connecting the terminal block and the circuit breaker inside the case (specifically, bend and form the feed wire according to the wiring space). In contrast, in the distribution board 1 of the present embodiment, as shown in FIGS. 1, 12 to 15, the connection conductor 3 is formed by bending a single conductor (copper plate) so as to include a conductor main body 32 extending in the left-right direction inside the distribution board 1, a primary side portion 30, and a secondary side portion 31. Therefore, if the connection conductor 3 of the present embodiment is arranged in the case 5, the primary side portion 30 is arranged so as to be connectable to the secondary side terminal portion 2B of the terminal block 2, and the secondary side portion 31 is arranged so as to be connectable to the power supply terminal portion 40 of the circuit breaker 4. Thus, there is no need to bend and form the conductor in consideration of the positions of the terminal block 2 and the circuit breaker 4, etc. Moreover, by inserting one end side insertion portion 300 of the primary side portion 30 into the secondary side terminal portion 2B (the secondary side terminal portion 2B configured as a secondary side insertion portion into which the one end side insertion portion 300 can be inserted), the terminal block 2 and the connection conductor 3 can be electrically connected. Therefore, the electrical connection between the terminal block 2 and the connection conductor 3 can be facilitated.

[0061] Furthermore, in the present embodiment, as shown in FIG. 16, the insertion member 2111 is inserted into the hole portion 2110a from the front side through the insertion hole 2110b. Therefore, by moving the insertion member 2111 backward, the interval in the front-rear direction within the hole portion 2110a can be narrowed. Thus, with the connection conductor 3 inserted into the hole portion 2110a of the frame body 2110, by moving the insertion member 2111 backward, the one end side insertion portion 300 can be pushed toward the secondary side connection portion 2122, and the surface contact between the one end side insertion portion 300 and the secondary side connection portion 2122 can be made more reliable. Also, in the front-rear direction, the insertion member 2111 and the frame body 2110 sandwich the one end side insertion portion 300 and the secondary side connection portion 2122, thereby suppressing the one end side insertion portion 300 from coming out of the frame body 2110. That is, since the secondary side terminal portion 2B is a terminal portion of the "clamping method" that clamps the one end side insertion portion 300, the connection work is simple and reliable electrical connection can be achieved.

[0062] In addition, in the present embodiment, the secondary side portion 31 of the connection conductor 3 is provided with an other-end-side insertion portion 310. As shown in FIG. 1, the other-end-side insertion portion 310 is inserted into the power supply terminal portion 40 (the power supply terminal portion 40 configured as a power supply insertion portion into which the other-end-side insertion portion 310 can be inserted), thereby electrically connecting the circuit breaker 4 and the connection conductor 3. Therefore, the electrical connection between the circuit breaker 4 and the connection conductor 3 can be facilitated. Specifically, since the other-end-side insertion portion 310 is configured as a "plug-in terminal" and the power supply terminal portion 40 is configured as a terminal portion of a "plug-in method", the electrical connection between the other-end-side insertion portion 310 and the power supply terminal portion 40 can be easily performed.

[0063] In addition, in the distribution board 1 of the present embodiment, the primary side terminal portion 2A of the terminal block 2 is configured as a so-called "insertion method" terminal portion, and the secondary side terminal portion 2B is configured as a so-called "clamping method" terminal portion. Therefore, different types of terminals can be electrically connected to the primary side terminal portion 2A and the secondary side terminal portion 2B of the terminal block 2, respectively.

[0064] In addition, in the present embodiment, the end portion of the primary side power transmission member 7 is configured as an insertion terminal 70, and one side of the circuit breaker 4 (specifically, the power supply terminal portion 40) is configured as a terminal portion of a "plug-in method". Therefore, the primary side power transmission member 7 and the circuit breaker 4 cannot be directly electrically connected. On the other hand, in the distribution board 1 of the present embodiment, in the terminal block 2 connected to the circuit breaker 4 via the connection conductor 3, the primary side terminal portion 2A is configured as a terminal portion of an "insertion method", so that it is configured to be connectable to the primary side power transmission member 7. Therefore, by connecting the insertion terminal 70 of the primary side power transmission member 7 to the primary side terminal portion 2A, the primary side power transmission member 7 and the circuit breaker 4 with different connection modes can be electrically connected via the terminal block 2 and the connection conductor 3.

[0065] In addition, in the distribution board 1 of the present embodiment, by inserting each other-end-side insertion portion 310 into the corresponding power supply terminal portion 40, the plurality of circuit breakers 4 and the connection conductor 3 can be electrically connected, so that the electrical connection structure between the plurality of circuit breakers 4 and the connection conductor 3 can be simplified. Specifically, in the distribution board 1 of the present embodiment, the connection conductor 3 is provided with a plurality of other-end-side insertion portions 310, and each of these other-end-side insertion portions 310 is configured as a so-called "plug-in terminal", and the power supply terminal portion 40 of each branch breaker is configured as a "plug-in type" terminal portion. Therefore, electrical connection can be achieved by inserting each other-end-side insertion portion 310 into the power supply terminal portion 40. Thus, the electrical connection structure between the connection conductor 3 and the plurality of circuit breakers 4 can be simplified.

[0066] In the distribution board 1 of the present embodiment, when the short-circuit member 6 is attached to the terminal block 2, as shown in FIG. 18, by supporting the supported portion 600 at the attachment portion 2012, the fall of the short-circuit member 6 can be prevented. Specifically, as shown in FIG. 19, by placing the long edge 600a of the supported portion 600 on the placement portion 2012a, the fall of the short-circuit member 6 can be prevented, and by arranging the supported portion 600 between the front surface of the partition wall portion 2011 and the protruding portion 2012b, the fall accompanying the movement of the short-circuit member 6 in the front-rear direction (front side) can be prevented.

[0067] In addition, as shown in FIGS. 8 and 11, the communication hole 2001D formed in the secondary-side base portion 2001 communicates with the hole portion 2110a of the frame body 2110 housed in the secondary housing portion 2001B. Therefore, by inserting the one-end-side insertion portion 300 into the communication hole 2001D, the one-end-side insertion portion 300 can be inserted into the secondary-side terminal portion 2B.

[0068] In addition, in the present embodiment, as shown in FIG. 12, the one-end-side insertion portion 300 is formed such that the length in the left-right direction becomes narrower as it advances downward. Therefore, it is easy to insert the one-end-side insertion portion 300 into the communication hole 2001D and the secondary-side terminal portion 2B (specifically, the hole portion 2110a of the frame body 2110).

[0069] Also, in the present embodiment, as shown in FIG. 12, one - end - side insertion portion 300a of the connection conductor 3a of the N - pole is formed longer on the lower side than the other one - end - side insertion portions 300b and 300c. Further, in the terminal block 2 of the present embodiment, as shown in FIG. 2, the central secondary accommodation portion 2001B in the L1 and L2 directions is arranged on the primary side rather than the other secondary accommodation portions 2001B. In addition, the central communication hole 2001Da in the L1 and L2 directions is formed longer on the primary side than the other communication holes 2001Db and 2001Dc. Therefore, in the present embodiment, since the length of the one - end - side insertion portion 300a connected to the central secondary - side terminal portion 2B in the L1 and L2 directions is longer than the other one - end - side insertion portions 300b and 300c, it is possible to suppress the one - end - side insertion portion 300a from coming off, and thus suppress the open - phase associated with the coming - off of the one - end - side insertion portion 300a.

[0070] Also, in the present embodiment, as shown in FIGS. 2 and 5, the primary - side end face 2000a and the secondary - side end face 2001a of the terminal block 2 are configured to have different shapes. Specifically, the primary - side end face 2000a is formed in a convex shape, and the secondary - side end face 2001a is formed flat. Therefore, an error can be prevented when the terminal block 2 is attached to the case 5.

[0071] Also, the connection conductor 3 of the present embodiment is formed by bending a plate - like conductor (specifically, a copper plate). Specifically, as shown in FIG. 15, a copper plate is bent so that a linear plate - like conductor body 32 and a primary - side portion 30 and a secondary - side portion 31 extend in a direction orthogonal to the conductor body 32. Therefore, the connection conductor 3 can be easily molded. Further, in the present embodiment, as shown in FIGS. 1, 12 to 14, in the front - to - back direction, three conductor bodies 32 are arranged so as to overlap. Thus, space saving within the case 5 can be achieved.

[0072] In the distribution board 1 of the present embodiment, the terminal block 2 and the circuit breaker 4 are arranged side by side. The secondary terminal portion 2B of the terminal block 2 and the power supply terminal portion 40 of the circuit breaker 4 are arranged so as to face in the same direction in a direction orthogonal to the side-by-side direction (so that they can be connected to the connection conductor 3 from the same direction). Therefore, in the distribution board 1 of the present embodiment, since the secondary terminal portion 2B and the power supply terminal portion 40 face in the same direction, the connection conductor 3 can be connected from the same direction, and the connection structure of the connection conductor 3 is simplified.

[0073] Further, in the distribution board 1 of the present embodiment, the secondary terminal portion 2B and the power supply terminal portion 40 are arranged at the same position in the same direction. Therefore, in the distribution board 1 of the present embodiment, in the direction in which the terminal block 2 and the circuit breaker 4 are arranged side by side, the connection conductor 3 can be configured linearly, so that the connection structure can be simplified.

[0074] Further, in the distribution board 1 of the present embodiment, the terminal block 2 includes three terminal portions 21 each having a primary terminal portion 2A arranged on the primary side and a secondary terminal portion 2B arranged on the secondary side. The three terminal portions 21 are arranged side by side in the direction in which the terminal block 2 and the circuit breaker 4 are arranged side by side (side-by-side direction). The terminal portion 21 at the center in the side-by-side direction is arranged closer to the primary side with respect to the other two terminal portions 21. The secondary terminal portions 2B of the other two terminal portions 21 are arranged at the same position in the same direction as the power supply terminal portion 40. Therefore, in the distribution board 1 of the present embodiment, the width in the side-by-side direction between the terminal portions 21 is reduced, and the connection conductor 3 can be configured linearly in the side-by-side direction between the terminal portions 21, so that the connection structure is simplified.

[0075] Further, the case 5 of the present embodiment is rectangular and includes a bottom plate portion 50 and a rectangular frame portion 51. The bottom plate portion 50 is configured to be able to attach the terminal block 2 and the circuit breaker 4, and an insertion window portion 500a for inserting the primary side power transmission member 7 from the outside into the case 5 is formed in the bottom plate portion 50. Further, the frame portion 51 includes four frame side portions that rise from the four outer peripheral edge portions of the bottom plate portion 50, respectively, and forms the outer peripheral wall of the case 5. In addition, the terminal block 2 and the circuit breaker 4 are attached to the bottom plate portion 50 side by side along the longitudinal direction of one frame side portion (the first frame side portion 510a). And the secondary side terminal portion 2B of the terminal block 2 and the power supply terminal portion 40 of the circuit breaker 4 are directed toward the first frame side portion 510a. Also, a connection conductor 3 is disposed between the terminal block 2 and the circuit breaker 4 and the first frame side portion 510a. Further, in this connection conductor 3, the conductor main body 32 extends along the longitudinal direction of the first frame side portion 510a, one end side insertion portion 300 protrudes toward the secondary side terminal portion 2B, and the other end side insertion portion 310 protrudes toward the power supply terminal portion 40. In addition, an insertion window portion 500a for inserting the primary side power transmission member 7 into the case 5 is formed between the second frame side portion 510b disposed opposite to the first frame side portion 510a of the frame portion 51 and the terminal block 2. Therefore, according to the distribution board 1 of the present embodiment, with the first frame side portion 510a facing upward and the second frame side portion 510b facing downward, in the state where the distribution board 1 is attached, the primary side power transmission member 7 can be connected to the terminal block 2 in the space on the side opposite to the side (upper side) where the connection conductor 3 is disposed (the space on the second frame side portion 510b side, which is the lower side), so that the installation work of the distribution board 1 becomes easy.

[0076] Also, in the distribution board 1 of the present embodiment, an insertion window portion 500b for leading out the load wiring to the outside of the case 5 is disposed between the second frame side portion 510b disposed opposite to the first frame side portion 510a of the frame portion 51 and the circuit breaker 4. Therefore, with the first frame side portion 510a facing upward and the second frame side portion 510b facing downward, in the state where the distribution board 1 is attached, the load wiring can be connected to the circuit breaker 4 and led out to the outside of the case 5 in the space on the side opposite to the side (upper side) where the connection conductor 3 is disposed (the space on the second frame side portion 510b side, which is the lower space), so that the installation work of the distribution board 1 becomes easy.

[0077] In addition, in this embodiment, within the case 5, the terminal block 2 and the circuit breaker 4 are arranged side by side in the longitudinal direction (left - right direction) of the first frame side portion 510a. Then, the insertion window portion 500a is arranged between the second frame side portion 510b and the terminal block 2, and the insertion window portion 500b is arranged between the second frame side portion 510b and the circuit breaker 4. Thus, the insertion window portion 500a and the insertion window portion 500b are arranged side by side in the longitudinal direction (left - right direction) of the second frame side portion 510b. Therefore, since the terminal block 2 and the circuit breaker 4 are arranged side by side in the longitudinal direction of the first frame side portion 510a, and the insertion window portion 500a and the insertion window portion 500b are arranged side by side in the longitudinal direction of the second frame side portion 510b, the connection between the primary - side power - transmission member 7 inserted into the case 5 through the insertion window portion 500a and the terminal block 2 and the connection between the load wiring going out of the case 5 through the insertion window portion 500b and the circuit breaker 4 do not interfere with each other, and the installation work of the distribution board 1 becomes easy.

[0078] Subsequently, the distribution board 1 of the second embodiment will be described with reference to FIGS. 20 to 24. In the description of the distribution board 1 of the second embodiment, the description of the points overlapping with the description of the distribution board 1 of the first embodiment will be omitted.

[0079] As shown in FIG. 20, the distribution board 1 of the second embodiment is different from the first embodiment in that, in addition to the branch breaker 4a as the circuit breaker 4, it is provided with a main breaker 4b that switches between conduction and non - conduction to the branch breaker 4a according to the open state and the closed state of the handle. Specifically, in the second embodiment, in addition to the main breaker 4b being arranged on the primary side of a plurality of branch breakers 4a, the main breaker 4b is electrically connected to the terminal block 2 via the connection conductor 3. Also, in this embodiment, the main breaker 4b is electrically connected to a plurality of branch breakers 4a.

[0080] The power supply terminal portion 40 provided on the primary side of the main breaker 4b of the present embodiment is configured as a terminal portion of an "insertion method" that is inserted into and fixed to the secondary side portion 31 of the connection conductor 3. Specifically, as shown in FIG. 24, this power supply terminal portion 40 includes a fixing portion 41 that fixes the secondary side portion 31 of the connection conductor 3 to the main breaker 4b, and a plate-shaped electrical conductor 42 (specifically, a copper plate) that has conductivity and is electrically connected to the secondary side portion 31 of the connection conductor 3. Further, the fixing portion 41 is composed of a fixing member 410 (specifically, a fixing screw) that fixes the secondary side portion 31 of the connection conductor 3 to the power supply terminal portion 40, and a fixing accommodation portion 411 that accommodates the fixing member 410. An insertion hole 420 through which the fixing member 410 can be inserted is formed in the electrical conductor 42. Further, as shown in FIG. 24, the power supply terminal portion 40 of the present embodiment is configured by accommodating the fixing member 410 inserted through the insertion hole 420 in the fixing accommodation portion 411 with the electrical conductor 42 overlapped on the fixing accommodation portion 411 so that the fixing accommodation portion 411 and the insertion hole 420 communicate with each other. Note that three power supply terminal portions 40 are arranged on the primary side of the main breaker 4b of the present embodiment.

[0081] As shown in FIG. 21, the connection conductor 3 of the second embodiment has a different shape from that of the first embodiment. First, the three connection conductors 3 (3a, 3b, 3c) of the second embodiment are different from the first embodiment in that they have substantially the same shape as shown in FIGS. 21 to 23. Further, the three connection conductors 3 of the second embodiment are also different from the second embodiment in that, as shown in FIG. 22, the height in the front-rear direction is formed to be the same. Therefore, as shown in FIG. 20, in the case 5, the three conductor bodies 32a, 32b, and 32c are arranged side by side in the vertical direction.

[0082] As shown in FIGS. 20 to 23, one end insertion portion 300 of the second embodiment is formed in a straight plate shape extending in the vertical direction. On the other hand, the secondary side portion 31 of the connection conductor 3 of the second embodiment (specifically, the portion connected to the conductor main body 32 via the other end side connection portion 311) is configured as an insertion terminal portion 312 as shown in FIGS. 21 and 23. Specifically, a fixing member insertion portion 312a for inserting a fixing member 410 is formed in the insertion terminal portion 312 in a flat plate-shaped conductive member (specifically, a copper plate). Further, as shown in FIGS. 20 to 22, the conductor main body 32 of the second embodiment is formed such that the length (thickness) in the vertical direction is shorter than the length (width) in the front-rear direction.

[0083] When electrically connecting the connection conductor 3 of the second embodiment and the main breaker 4b, as shown in FIG. 24, the secondary side portion 31 (specifically, the insertion terminal portion 312) of the connection conductor 3 is overlapped with the electric conductor 42 of the power supply terminal portion 40. Then, the fixing member 410 is inserted through the insertion hole 420 of the electric conductor 42 and the fixing member insertion portion 312a, and the fixing member 410 is accommodated in the fixing accommodation portion 411. Thereby, the connection conductor 3 and the main breaker 4b are electrically connected, and the secondary side portion 31 of the connection conductor 3 is fixed to the main breaker 4b.

[0084] As described above, according to the distribution board 1 of the second embodiment, similarly to the distribution board 1 of the first embodiment, it is not necessary to route the connection conductor 3 in the case 5, and the one end insertion portion 300, which is the primary side portion 30 of the connection conductor 3, is inserted into the secondary side terminal portion 2B, so that the terminal block 2 and the connection conductor 3 can be electrically connected. Therefore, the electrical connection between the terminal block 2 and the connection conductor 3 can be facilitated.

[0085] Further, in the distribution board 1 of the second embodiment, as shown in FIGS. 21 to 23, since the shapes of the three connection conductors 3 are formed to be substantially the same, the connection conductors 3 are easy to form. Furthermore, in the second embodiment, since the length (thickness) of the conductor main body 32 in the vertical direction is shorter than the length (width) in the front-rear direction, the vertical width of the case 5 occupied by one conductor main body 32 can be reduced. Therefore, as shown in FIG. 20, the three connection conductors 3 can be arranged side by side in the case 5.

[0086] Also, according to the distribution board 1 of the second embodiment, as shown in FIG. 20, in order to align the primary power transmission member 7 inserted into the case 5 through the window portion 500 with the direction of the power supply terminal portion 40 of the circuit breaker 4 (specifically, the main breaker 4b), it is not necessary to route it inside the case 5. Specifically, as shown in FIG. 20, the primary power transmission member 7 inserted into the case 5 from the window portion 500 on the lower side of the case 5 is connected to the primary side terminal portion 2A of the terminal block 2, so that electricity from the primary power transmission member 7 can be supplied to the main breaker 4b through the terminal block 2 and the connection conductor 3. Therefore, the length of the primary power transmission member 7 inserted into the case 5 can be shortened, and it is not necessary to route the primary power transmission member 7 inside the case 5, which can reduce the work burden on the operator.

[0087] Note that the distribution board of the present invention is not limited to the above first and second embodiments, and various modifications can of course be made without departing from the gist of the invention.

[0088] In the above first and second embodiments, a distribution board installed in a house is cited as an example, but the distribution board of the present invention is not limited to this, and it may be other distribution boards (for example, distribution boards installed in buildings or factories, or distribution boards for supplying electricity to distribution boards).

[0089] Also, in the distribution boards 1 of the above first and second embodiments, the left-right direction is formed longer than the up-down direction, but it is not limited to this, and a distribution board in which the up-down direction is longer than the left-right direction may also be used. In this case, for example, the terminal block 2, the connection conductor 3, and the circuit breaker 4 may be arranged in this order from the upper side inside the case 5.

[0090] Also, in the above first and second embodiments, the primary power transmission member 7 inserted into the case 5 through the window portion 500 is electrically connected to the terminal block 2, but it is not limited to this. For example, inside the case 5, a circuit breaker or a switch disconnector may be arranged on the primary side (power supply side) of the terminal block 2, and the primary power transmission member led out from the circuit breaker or the switch disconnector may be electrically connected to the terminal block.

[0091] In the first embodiment described above, a case where a plurality of branch breakers 4a are arranged as the circuit breaker 4 and the plurality of branch breakers 4a are electrically connected to the terminal block 2 via the connection conductor 3 has been described. However, the present invention is not limited to this. For example, a plurality of main breakers may be arranged as the circuit breaker 4, and the plurality of main breakers may be electrically connected to the terminal block 2 via the connection conductor 3. Further, as the plurality of circuit breakers 4, both a main breaker and a branch breaker may be provided. Furthermore, the circuit breaker 4 may be other than a main breaker or a branch breaker (for example, an emergency switch).

[0092] In the first embodiment, the number of circuit breakers 4 (specifically, a main breaker or a branch breaker) electrically connected to the terminal block 2 via the connection conductor 3 may be one.

[0093] Also, the connection conductor 3 of the first embodiment may be changed to the structure shown in FIGS. 25 to 27. That is, in the three connection conductors 3 shown in FIGS. 25 to 27, the shapes of the connection conductors 3b and 3c of the L1 pole and the L2 pole and the number of the secondary side portions 31 of the connection conductor 3 are different from those of the first embodiment.

[0094] Specifically, in the connection conductor 3c of the L2 pole, as shown in FIG. 27, convex portions 320c (specifically, two convex portions 320c on the front side and three convex portions 320c on the rear side) protruding in both the front-rear directions of the conductor main body 32c are formed. On the other hand, in the connection conductor 3b of the L1 pole, two convex portions 320b protruding on the front side of the conductor main body 32b are formed. Therefore, as shown in FIGS. 25 to 27, in the connection conductors 3b and 3c of the L1 pole and the L2 pole different from the first embodiment, by forming the convex portions 320b and 320c on the conductor main bodies 32b and 32c to increase the volumes of the conductor main bodies 32b and 32c, the strength of the connection conductors 3b and 3c can be increased, the heat dissipation of the connection conductors 3b and 3c can be increased, and a rapid temperature rise of the connection conductors 3b and 3c can be prevented. As shown in FIGS. 25 and 27, the primary side portion 30 and the secondary side portion 31 of the connection conductor 3b are formed on the front side of the conductor main body 32b.

[0095] Also, in the connection conductors 3b and 3c between the L1 pole and the L2 pole in FIGS. 25 to 27, four insertion portions on the other end side are provided as the secondary side portions 31. Therefore, when connecting the three connection conductors shown in FIGS. 25 to 27 to the circuit breaker, the secondary side portions 31 of the connection conductors 3b and 3c between the L1 pole and the L2 pole are connected to the four power supply terminal portions.

[0096] Also, in the first and second embodiments, as shown in FIGS. 1 and 20, cross-shaped recesses were formed on the front surfaces of the male portion 210B, the insertion member 2111, and the fixing member 22. However, the present invention is not limited to this, and for example, hexagonal recesses may be formed.

[0097] Also, in the first and second embodiments, the terminal portion 21a at the center (N pole) in the terminal block 2 (specifically, the primary side terminal portion 2Aa and the secondary side terminal portion) was arranged on the primary side rather than the other terminal portions 21b and 21c (specifically, the primary side terminal portions 2Ab and 2Ac and the secondary side terminal portions respectively). However, the present invention is not limited to this, and for example, the central secondary side terminal portion may be arranged at the same position as the other secondary side terminal portions. In this case, it is conceivable to form the central communication hole 2001Da to have the same length as the other communication holes 2001Db and 2001Dc.

[0098] Furthermore, the same applies to the primary side terminal portion 2Aa, and it may be arranged at the same position as the other primary side terminal portions 2Ab and 2Ac in the primary and secondary directions. In this case, it is conceivable that the primary side end face 2000a is formed flat.

[0099] Also, in the first and second embodiments, in addition to the secondary side end face 2001a of the terminal block 2 being formed flat, the central secondary side terminal portion is arranged on the primary side rather than the other secondary side terminal portions, so that the central communication hole 2001Da is formed longer on the primary side than the other communication holes 2001Db and 2001Dc. However, the present invention is not limited to this, and for example, the secondary side end face 2001a may be formed concave so as to recess the portion of the central communication hole 2001Da.

Explanation of Reference Numerals

[0100] 1: Distribution board, 2: Terminal block, 2A: Primary terminal part, 2B: Secondary terminal part, 20: Base, 200: Base body, 2000: Primary base part, 2000A: Fixing part, 2000B: Primary accommodating part, 2000a: Primary end face, 2001: Secondary base part, 2001A: Fixing part, 2001B: Secondary accommodating part, 2001C: Mounting hole, 2001D: Communication hole, 2001Da: Central communication hole, 2001Db: L1-side communication hole, 2001Dc: L2-side communication hole, 2001a: Secondary end face, 201: Wall part, 2010: End wall part, 2011: Partition wall part, 2012: Mounting part, 2012a: Placing part, 2012b: Protruding part, 21: Terminal part, 21a: N-pole terminal part, 21b: L1-pole terminal part, 21c: L2-pole terminal part, 210: Primary side part, 210A: Female part, 210B: Male part, 211: Secondary side part, 2110: Frame body, 2110a: Hole part, 2110b: Insertion hole, 2111: Insertion member, 212: Electrical connection part, 2121: Primary side connection part, 2121a: Male part insertion through hole, 2122: Secondary side connection part, 22: Fixing member, 3: Connection conductor, 30: Primary side part, 300: One end side insertion part, 301: One end side communication part, 31: Secondary side part, 310: The other end side insertion part, 310A: First other end side insertion part, 310B: Second other end side insertion part, 311: The other end side communication part, 311A: First other end side communication part, 311B: Second other end side communication part, 312: Insertion terminal part, 312a: Fixing member insertion through hole, 32: Conductor body, 4: Circuit breaker, 4a: Branch breaker, 4b: Main breaker, 40: Power supply terminal part, 41: Fixing part, 410: Fixing member, 411: Fixing accommodating part, 42: Electrical conductor, 420: Insertion through hole, 5: Case, 50: Bottom plate part, 500: Window part, 501: Conductor mounting part, 51: Frame part, 6: Short circuit member, 60: Communication part, 600: Supported part, 600a: Long edge of the supported part, 601: Notch part, 61: Extending part, 61a: Connecting part, 61b: Terminal connection part, 61d: Insertion through hole, 610: One side extending part, 611: The other side extending part, 7: Primary side power transmission member, 70: Insertion terminal, 700: Insertion through hole

Claims

【Claim 1】 A terminal block including three terminal portions having a primary-side terminal portion electrically connected to a primary-side power transmission member for transmitting electricity and a secondary-side terminal portion electrically connected to the primary-side terminal portion, and a base on which the three terminal portions are arranged side by side in a row direction; A circuit breaker including a power supply terminal portion to which electricity is supplied; A connection conductor including a primary-side portion electrically connected to the secondary-side terminal portion and a secondary-side portion electrically connected to the power supply terminal portion, the connection conductor electrically connecting the terminal block and the circuit breaker; A case housing the terminal block, the circuit breaker, and the connection conductor; The connection conductor is configured in a plate shape in which the primary-side portion is disposed at one end side and the secondary-side portion is disposed at the other end side; The primary-side portion of the connection conductor includes an insertion portion at one end side to be inserted into the secondary-side terminal portion; The secondary-side terminal portion is configured to electrically connect the terminal block and the connection conductor when the insertion portion at one end side is inserted; The three terminal portions are arranged on the base such that the primary-side terminal portions and the secondary-side terminal portions are arranged side by side in the row direction; Among the three terminal portions, the terminal portion located at the center in the row direction has both the primary-side terminal portion and the secondary-side terminal portion shifted to the primary side or both the primary-side terminal portion and the secondary-side terminal portion shifted to the secondary side with respect to the other two terminal portions. A distribution board characterized by the above.

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