JP4385976B2 - Distribution board - Google Patents

Description

  The present invention relates to a distribution board in which branch breakers are arranged side by side in two upper and lower rows.

  This type of conventional distribution board (see Patent Document 1) is used for a single-phase three-wire wiring path, and is disposed on the front side of the distribution board with a central conductive bar as a neutral pole. In addition, there are three conductive bars arranged on the back side with two upper and lower conductive bars as voltage electrodes, and branch breakers are arranged side by side on both upper and lower sides across the three conductive bars. . Each branch breaker is connected to the conductive bar of the neutral electrode and the conductive bar of the voltage electrode close to the installation position via each connection part, or connected to the conductive bar of the two voltage electrodes via each connection part. Have been.

However, when each branch breaker is connected to one neutral pole and one voltage pole, the voltage pole is always connected to the conductive bar closer to each branch breaker, and the conductive bar farther from each branch breaker. There was a problem that could not be connected.
JP-A-9-74622

  The present invention has been made in view of such a reason, and an object of the present invention is to provide a distribution board that can be easily connected at any voltage pole regardless of whether the branch breaker is upper or lower. There is.

  The distribution board according to the present invention has a plurality of branch breakers in which the first internal unit blocks are arranged in a line in the box, and the input terminals of the branch breakers are arranged on one side of the line and the output terminals are opposite to each other. Line up on the side. The second internal unit block has a plurality of branch breakers arranged in a line in the box, and the input terminals of the branch breakers are arranged on one side of the line and the output terminals are arranged on the opposite side. Are arranged in parallel with the branch breaker row of the first internal block. The plurality of first branch bars are arranged along the input terminal side of the first internal unit block and connected to the input terminal of the first internal unit block. The plurality of second branch bars are arranged along the input terminal side of the second internal unit block and connected to the input terminal of the second internal unit block. The plurality of main bars pass between the first inner block and the bottom plate of the box and intersect the direction in which the branch breakers of the first inner block are arranged to cross the first branch bar and the second branch bar. Connected to the branch bar.

  In the above configuration, the first internal block has a main breaker at a position where the main bar intersects, and the main bar is connected to an output terminal of the main breaker.

In the above configuration, the plurality of main bars are juxtaposed in the arrangement direction of the branch breakers of the first internal unit block, each formed by an elongated conductive plate, and the thickness direction thereof faces the bottom plate of the box And the longitudinal direction intersects the arrangement direction of the branch breakers of the first internal unit block,
The first branch bar and the second branch bar are each formed by an elongated conductive plate, the width direction is opposed to the bottom plate of the box, and the longitudinal direction is the first inner block and the second inner block. A main body in the direction in which the branch breakers are arranged, a main connecting portion provided on the main body and connected to the main bar, and protruding from the main body toward the branch breaker and connected to the input terminal of the branch breaker And a branch connection portion.

In the above-described configuration, the plurality of main bars are arranged on one end side of the first internal block in the arrangement direction of the branch breakers,
The plurality of first branch bars and the plurality of second branch bars are juxtaposed in a direction approaching and separating from the input terminals of the branch breakers of the first internal unit block and the second internal unit block, and the main trunk Cross the bar,
The input of one of the plurality of first branch bars and the plurality of second branch bars in the connection relationship between the plurality of first branch bars and the plurality of second branch bars and the main bar. The other branch bar adjacent to the opposite side of the terminal is connected to the other main bar adjacent to the other end side of the branch breaker in the arrangement direction of the one main bar to which the one branch bar is connected. Have

In the above configuration, the first internal unit block has a substrate to which the branch breaker is attached at a position spaced from the bottom plate of the box.
The plurality of main bars are supported by an insulating member having a plurality of storage portions that are individually stored separately.
The insulating member is attached to the substrate between the bottom plate and the substrate;
The main bar is disposed between the insulating member and the substrate.

In the above configuration, the main trunk connection portion and the main trunk bar have holes through which connection screws pass,
The insulating member forms a nut housing recess that houses a nut into which the connection screw is screwed, and a screw loose insertion recess that communicates with the nut housing recess and at which a tip of the thread portion of the connection screw is located. A screw-disposed protrusion that is formed and protrudes toward the bottom plate of the box, and the screw-disposed protrusion is formed on the bottom plate of the box with the insulating member attached to the first inner block. It protrudes to the position where it abuts.

  According to the distribution board of the present invention, since the plurality of branch bars are divided for each of the first internal unit block and the second internal unit block having a plurality of branch breakers, the branch breaker of which internal unit block is used. However, any voltage electrode can be easily connected. In addition, since the main bar intersects the first internal unit block, the first branch bar and the second branch bar can be easily connected to the main bar. In addition, since the main bar is disposed between the first internal unit block and the bottom plate of the box, a branch breaker or other member is also disposed on the first internal unit block on the surface side of the main bar. This can save space.

  When the main breaker is provided at the position of the main bar of the inner unit block, the main breaker can also be arranged integrally with the first inner unit block, so that further space saving can be achieved and the main bar can be easily connected. .

  Since the thickness direction of the main bar faces the bottom plate, the main circuit breaker and each branch bar can be connected to the main bar from the opening side of the box, and the connection work to the main bar becomes easy. In addition, since the width direction of each branch bar is the bottom plate direction, when the number of poles increases and the number of branch bars increases, it can be dealt with by arranging them in the thickness direction, thereby saving space. .

  Due to the connection relationship between the main bar and the branch bar, when connecting each branch bar to the main bar, the main connection part can be prevented from intersecting the main body of each branch bar without forming each branch bar in a complicated manner. Each branch bar can be easily formed, and insulation of each branch bar can be easily secured.

  By attaching the insulating member that holds the main bar to the substrate, the first internal unit block, the second internal unit block, the insulating member, and the main bar can be integrated, and the attachment and detachment work to the box becomes easy.

  Since the screw placement protrusion abuts against the bottom plate, when removing each member connected to the main bar with the connection screw, the pressing force can be absorbed by the bottom plate of the box, and the insulating member is not easily destroyed. .

  A first embodiment of the present invention will be described with reference to FIGS. This distribution board is installed, for example, in a three-phase four-wire wiring path that connects a load between the voltage electrodes U, V, and W and the neutral electrode N. In the distribution board, a first internal unit block 2 and a second internal unit block 3 are arranged in a box 1.

  The box 1 is a one-sided opening box having a bottom plate 6 and upper, lower, left and right side plates 7 to 10 erected from the four circumferences.

  The first internal unit block 2 has a plurality of branch breakers 20 arranged in the direction of the left and right side plates 9 and 10 of the box 1 with the individual output terminals 4 and 5 in the direction of the upper and lower side plates 7 and 8 of the box 1. Side by side. The substrate 11 is attached to a connecting piece provided on the bottom plate side of the internal unit side plate 12 disposed along the inner sides of the left and right side plates 9 and 10 by screws 21, and the substrate 11 is positioned at a distance from the bottom plate 6. Yes. The inner side plate 12 has a locking piece 13 to be locked to the upper side of the left and right side plates 9 and 10 of the box 1 at the opening side end, and the locking piece 13 is attached to the side plates 9 and 10 of the box 1 by screws 14. Installed.

  A plurality of two-pole branch breakers 20 are arranged in a row on the substrate 11, and a main breaker 15 is installed at one end in the arrangement direction. Both the branch breaker 20 and the main breaker 15 have the input terminals 4 and 15a arranged on one side in the arrangement direction and the output terminals 5 and 15b arranged on the other side. As shown in FIG. 2, a mounting claw 17 is formed on one side in the width direction of the substrate 11, a locking piece 18 is cut and raised at an intermediate portion, and a pressing portion 19 is provided on the lower side. The mounting recess on the input terminal 4 side of the branch breaker 20 is engaged with the mounting claw 17, the locking piece 18 is engaged with the recess on the bottom, and the output terminal 5 side is pressed and fixed by the pressing portion 19. The main breaker 15 is also attached to the substrate 11 in the same manner as the branch breaker 20.

  The second internal unit block 3 has the same configuration as the first internal unit block 2 except that the main breaker 15 is not provided and that the branch breaker 20 is provided at the position of the main breaker 15. It is. The second internal unit block 3 is arranged in parallel with the first internal unit block 2 with a predetermined wiring interval, and is attached to the same internal unit side plate 12 with screws 21.

  The plurality of first branch bars 23 to 26 have a main body formed of an elongated conductive plate and extend in the juxtaposition direction of the branch breakers 20 on the input terminal 4 side of each branch breaker 20 of the first internal unit block 2. And the width direction one side is arrange | positioned as the shape which opposes the baseplate 6 of the box 1. As shown in FIG. The main body includes a main connection portion 31 connected to main bars 27 to 30 described later, and a branch connection portion 32 protruding from the main body to each branch breaker 20 side and connected to the input terminal 4 of each branch breaker 20. is doing. Each of the first branch bars 23 to 26 is formed so as to be closer to the branch breaker 20, and the main connection portion 31 is bent at the end of the main breaker 15 toward the side plate 7 from the input terminal 15 a of the main breaker 15. Thus, the plate thickness direction is directed to the bottom plate 6 of the box 1, and a hole 31a is formed at the center thereof. A neutral pole branch bar 26 is disposed closest to the branch breaker 20.

  The plurality of second branch bars 34 to 37 have the same configuration as the first branch bars 23 to 26, but are longer than the first branch bars 23 to 26 due to the absence of the main breaker 15, and have a larger number of branch connections. .

  The plurality of main bars 27 to 30 pass from the input terminal 15a side at the position of the main breaker 15 of the first internal unit block 2 through the first internal unit block 2 and the bottom plate 6 of the box 1 to the second internal unit. It protrudes to the container block 3 side and is connected to each first branch bar 23 to 26 and each second branch bar 34 to 37. Each of the main bars 27 to 30 is formed of an elongated conductive plate, and one side in the thickness direction of the main bars 27 to 30 faces the bottom plate 6 of the box body 1 and is arranged in parallel in the direction in which the branch breakers 20 are arranged. A connecting piece 40 connected to the output terminal 15b of the main breaker 15 is provided in the middle portion of each main bar 27-30. The connecting piece 40 is disposed so as to stand on the main bars 27 to 30, bends the connecting piece 47 at the end close to the main bars 27 to 30 and forms a connecting hole 46, from the main bars 27 to 30. The output terminal connection 42 is bent at the far end. The screw 41 is passed through the connecting piece connecting hole 45 and the connecting hole 46 aligned therewith. A long hole 43 is formed in the width direction at both ends of the main bars 27 to 30, and a positioning hole 44 and a connection piece connecting hole 45 are provided in the middle part. Connection screws 49 are respectively passed through the long holes 43.

  Each of the main bars 27 to 30 is supported by an insulating member 52 having a plurality of storage portions 51 for separating and storing them individually. The insulating member 52 is the base plate 11 at the position of the main breaker 15 and the bottom plate of the box 1. 6 is arranged. The insulating member 52 has mounting pieces 53 protruding on both sides, and the mounting pieces 53 are locked to the hole edges of the substrate 11 through holes formed by cutting and raising the locking pieces 18 of the substrate 11, and screws 54 (FIG. 1). ). The storage portions 51 of the insulating member 52 are sequentially shifted in the longitudinal direction by the mutual distance between the branch bars 23 to 26 and 34 to 37 so as to correspond to the main connection portions 31 of the branch bars 23 to 26 and 34 to 37. Is arranged. The main bars 27 to 30 and the branch bars 23 to 26 and 34 to 37 are connected to the main bar 27 with the branch bars 23 and 34, the main bar 28 with the branch bars 24 and 35, and the main bar 29. The branch bars 25 and 36 are connected, and the branch bars 26 and 37 are connected to the main bar 30. That is, a branch bar adjacent to one branch bar, which is located on the side opposite to the input terminal 4 of the branch breaker 20, is a main bar adjacent to the main bar connected to the one branch bar. The other end of the first internal unit block 2 in the arrangement direction of the branch breakers, that is, the one located closer to the end opposite to the main breaker 15 is connected. As a result, the insulating member 52 is located at the position corresponding to the main connection portion 31 of each branch bar in each storage portion 51 in the order of the storage portion 51 farthest from the storage portion 51 closest to the branch breaker 20. The order is close to 7. In a state where each main bar 27-30 is housed in the insulating member 52, the main bar 27-30 is positioned between the insulating member 52 and the first internal unit block 2 so that the insulating member 52 is placed in the first internal unit block 2. Are attached to. In this case, each housing 51 of the insulating member 52 is provided with a protrusion 59, and the positioning holes 44 of the main bars 27 to 30 are fitted into the protrusion 59 for positioning.

  The nut 56 into which the threaded portion of the connecting screw 49 that passes through the main connecting portion 31 of each branch bar 23 to 26, 34 to 37 and the main connecting bar 27 to 30 is screwed and the nut 57 to which the screw 41 is screwed are insulated. Housed in member 52. That is, as shown in FIG. 6, a nut storage recess 60 that stores the nuts 56, 57 in a non-rotatable manner in each storage portion 51, and a screw that is communicated with the nut storage recess 60 and has a screw portion disposed at the tip. A screw disposing protrusion 62 that has a loose insertion recess 61 and protrudes toward the bottom plate 6 of the box 1 is formed. The nut 56 is formed with a screw hole 56a serving as a screwing portion shifted from the nut center to one side in the longitudinal direction of the branch bar. The amount of eccentricity is determined so that when the nut 56 is inverted, the position of the input terminal 4 of the branch breaker is different from that of another type of branch breaker such as a one-pole branch breaker. The screw arrangement projecting portion 62 is formed so as to project to a position where it contacts the bottom plate 6 of the box 1 with the insulating member 52 attached to the first inner unit block 2.

  The first cover 64 is inserted and covered between the branch bars 23 to 26 and 34 to 37 of the first internal unit block 2 and the second internal unit block 3. The second cover 65 covers the exposed portions of the branch bars 23 to 26 and 34 to 37 by locking holes 67 provided in the first cover 64 facing the claws 66 to the claws 66. The third cover 68 is inserted into and covered with the ends of the branch bars 23 to 26 of the first internal unit block 2 on the main connection part side. The fourth cover 70 covers the ends of the branch bars 23 to 26 opposite to the main connection portion 31 and is fixed to the substrate 11 with screws 31. The fifth cover 72 covers the connection pieces 40 of the main bars 27 to 30 and the main connection portion side ends of the second internal unit block 3, and is formed on the claws 73 on the claws 73 formed on both sides of the insulating member 52. The hole 74 is locked and attached. The insulating plate 75 is interposed between the main bars 27 to 30 of the insulating member 52 and the cut-and-raised portions of the locking pieces 18 of the substrate 11, and the holes 77 of the insulating plate 75 are formed in the claws 76 formed on the insulating member 52. Lock and fix.

  FIG. 12 shows a state in which the box 1 of the distribution board is closed with a lid 78, and has a translucent portion 79 through which the handles of the branch breaker 20 and the main breaker 15 can be seen.

  According to this embodiment, since the branch bars 23 to 26 and 34 to 37 are provided for the branch breakers 20 of the upper and lower first internal unit blocks 2 and the second internal unit block 3, the upper and lower branch breakers 20 are used. Any voltage electrode can be easily connected. Further, since the main bars 27 to 30 protrude from the upper side of the branch breakers 23 to 26 of the first internal unit block 2 to the second internal unit block 3 side, the first branch bars 23 to 26 and the second branch bar 34 to 37 can be easily connected to the main bars 27 to 30. Further, since the main bars 27 to 30 are disposed between the first inner unit block 2 and the bottom plate 6 of the box 1, the main breaker 15 is also provided on the substrate 11 on the surface side of the main bars 27 to 30. Further, a branch breaker or other member can be provided, and space can be saved.

  The main breaker 15 can also be integrated and disposed via the first internal unit block 2 and the second internal unit block 3 and the internal unit side plate 12, and further space saving can be achieved.

  The main breaker 15 and the branch bars 23 to 26 can be connected to the main bars 27 to 30 from the opening side of the box 1, and the connection work to the main bars 27 to 30 becomes easy. Moreover, since the width direction of each branch bar 23-26 is made into the direction which faces the bottom plate 6, when the number of poles increases and the number of branch bars increases, it can respond by arranging in parallel in the thickness direction. Space saving can be achieved.

  When connecting each of the branch bars 23 to 26 and 34 to 37 to the main bar 27 to 30, the main connection part 31 can be connected to each branch bar 23 without forming the branch bars 23 to 26 and 34 to 37 in a complicated manner. Since it can be made not to cross | intersect the main body of -26, 34-37, each branch bar 23-26, 34-37 can be formed easily and insulation ensuring of each branch bar 23-26, 34-37 can be performed easily.

  Since the 1st internal unit block 2, the 2nd internal unit block 3, the insulating member 52, and the main bars 27-30 can be integrated, the attachment or detachment operation | work to the box 1 becomes easy.

  When removing each member connected to the main bars 27 to 30 with the screws 41 and 49, the pressing force can be absorbed by the bottom plate 6 of the box body by the screw disposing projections 62 contacting the bottom plate 6. The insulating member 52 is not easily destroyed.

  The main bars 27 to 30 can pass through not only the first internal unit block 2 but also the lower side of the second internal unit block 3, and the branch bars 34 to 37 are arranged below the second internal unit block 3. It is also possible to arrange.

It is a front view of the state which opened the cover of the distribution board of one Embodiment of this invention, and removed the cover. It is the AA sectional view. It is a perspective view of the state which removed the cover etc. of the main bar. FIG. It is a top view of a main bar. It is sectional drawing of a main bar. It is a disassembled perspective view of the state which removed the main breaker of the 1st internal unit block. It is a perspective view of the assembly state. It is a disassembled perspective view of a 2nd internal unit block. It is a perspective view of the assembly state. It is a front view in the state where the lid of the distribution board was opened. It is a front view of the state where the lid of the distribution board was closed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Box 2 1st internal unit block 3 2nd internal unit block 4 Input terminal 5 Output terminal 6 Bottom plate 11 Board | substrate 15 Master breaker 20 Branch breaker
23-26 1st branch bar 27-30 Main bar
31 Main connection portion 32 Branch connection portions 34 to 37 Second branch bar 49 Connection screw 51 Storage portion 52 Insulating member 56 Nut 60 Nut storage recess 61 Screw loose insertion recess 62 Screw arrangement protrusion

Claims (6)

  A first internal unit block having a box and a plurality of branch breakers arranged in a line in the box, wherein the input terminals of the branch breakers are arranged on one side of the line and the output terminals are arranged on the opposite side; A plurality of branch breakers arranged in a line in the box, the input terminals of the branch breakers being arranged on one side of the line, and the output terminals being arranged on the opposite side, the row of branch breakers being the first A second internal unit block arranged in parallel with the branch breaker row of the internal unit block, and the input terminal of the first internal unit block arranged along the input terminal side of the first internal unit block A plurality of first branch bars connected to the input terminal side of the second internal unit block and a plurality of second branch bars connected to the input terminal of the second internal unit block , The first inner block and the box A distribution board comprising a plurality of main bars connected to the first branch bar and the second branch bar across the board and intersecting with the direction in which the branch breakers of the first internal block are arranged .   The distribution board according to claim 1, wherein the first internal unit block has a main breaker at a position where the main bar intersects, and the main bar is connected to an output terminal of the main breaker. The plurality of main bars are juxtaposed in the direction in which the branch breakers of the first inner block are arranged, and each is formed by an elongated conductive plate, the thickness direction of which faces the bottom plate of the box, and the longitudinal direction is Intersect the direction of the branch breakers of the first internal block,
The first branch bar and the second branch bar are each formed by an elongated conductive plate, the width direction is opposed to the bottom plate of the box, and the longitudinal direction is the first inner block and the second inner block. A main body in the direction in which the branch breakers are arranged, a main connecting portion provided on the main body and connected to the main bar, and protruding from the main body toward the branch breaker and connected to the input terminal of the branch breaker The distribution board according to claim 2, further comprising a branch connection portion. The plurality of main bars are arranged on one end side of the branching breakers in the first inner block in the arrangement direction,
The plurality of first branch bars and the plurality of second branch bars are juxtaposed in a direction approaching and separating from the input terminals of the branch breakers of the first internal unit block and the second internal unit block, and the main trunk Cross the bar,
The input of one of the plurality of first branch bars and the plurality of second branch bars in the connection relationship between the plurality of first branch bars and the plurality of second branch bars and the main bar. The other branch bar adjacent to the opposite side of the terminal is connected to the other main bar adjacent to the other end side of the branch breaker in the arrangement direction of the one main bar to which the one branch bar is connected. The distribution board according to claim 3. The first internal unit block has a substrate to which the branch breaker is attached at a position spaced from the bottom plate of the box.
The plurality of main bars are supported by an insulating member having a plurality of storage portions that are individually stored separately.
The insulating member is attached to the substrate between the bottom plate and the substrate;
The distribution board according to claim 4, wherein the main bar is disposed between the insulating member and the substrate. The main connection part and the main bar have holes through which connection screws pass,
The insulating member forms a nut housing recess that houses a nut into which the connection screw is screwed, and a screw loose insertion recess that communicates with the nut housing recess and at which a tip of the thread portion of the connection screw is located. A screw-disposed protrusion that is formed and protrudes toward the bottom plate of the box, and the screw-disposed protrusion is formed on the bottom plate of the box with the insulating member attached to the first inner block. The distribution board according to claim 5, wherein the distribution board is projected to a contact position.

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