JP2017028865A - Distribution panel and branch breaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distribution panel capable of performing addition/change work of a branch breaker and further capable of also easily implementing an attaching/detaching operation of the branch breaker without turning off a trunk breaker, and the branch breaker.SOLUTION: A linear part of a trunk bar 1 is configured by enclosing three faces of a front face that is directed towards a front side of the distribution panel, and side faces at both sides of the front face with covers 3. Among the covers, a cover 3 disposed on the front face to which a branch breaker 2 is connected includes a plurality of door members 32 including a plurality of doors 32a which are disposed correspondingly to a connection position of the branch breaker 2. The door 32a is opened/closed while being interlocked with attachment/detachment of the branch breaker 2. In the branch breaker 2, on the other hand, a power supply side terminal 23 of a housing is provided in a projection 25 that protrudes further backwards from an upper side of a back part of a housing 21 and on a bottom face of the projection 25, a pair of terminal fittings 10 is provided for connecting to the trunk bar 1 of the distribution panel.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a distribution board for branching and supplying power to individual electrical devices in a dwelling unit, and a branch breaker assembled to the distribution board.

In a distribution board such as a distribution board for housing, the part connecting the branch breaker of the main bar connected to the secondary side of the main breaker is arranged in a straight line, and the branch breakers are arranged on both sides of this straight line part. Are connected directly or via a branch bar (see, for example, Patent Document 1).
Because the main breaker bar is connected to the branch breaker in this way, the live part is exposed, but the part exposed on the front side of the distribution board is covered with a cover to prevent accidental contact with the operator. However, when adding or changing a branch breaker, this cover is removed and the main bar connection is exposed. Therefore, to prevent an electric shock, turn off the main breaker and open the main bar. The entire work was separated from the commercial power source.

JP 2009-195020 A

  As described above, in the conventional distribution board, when the branch breaker is added or changed, all the electric circuits are cut off and all the electric devices are turned off. Therefore, pre-adjustment and post-adjustment after power failure recovery are necessary, which is a troublesome work. Also, the branch breaker mounting / removal operation is also an operation in a narrow distribution board, so it is not a simple operation.

  Therefore, in view of such problems, the present invention enables a work for adding / changing a branch breaker without turning off the main breaker, and further allows a branch breaker to be easily attached and detached, The purpose is to provide a branch breaker.

In order to solve the above-mentioned problem, the invention of claim 1 is characterized in that the main bar connected to the secondary side of the main breaker has a straight portion for connecting the branch breaker and is provided on at least one side of the straight portion. A distribution board in which branch breakers are arranged and connected to the main bar, and the straight part of the main bar consists of a front surface facing the front of the distribution board and three sides on both sides surrounded by a blocking member. The closing member disposed on the surface connecting the branch breaker includes a door disposed in accordance with the connection position of the branch breaker, and the door is opened and closed in conjunction with the attachment / detachment of the branch breaker.
According to this configuration, when the branch breaker is removed, the door of that portion is closed, and the surface not related to the mounting of the branch breaker is always closed by the closing member, so that the main bar is not exposed. Therefore, even if the branch breaker is attached or detached while the main bar is charged, an electric shock accident can be prevented, and an unexpected accident can be prevented without turning the main breaker off during the branch breaker attaching / detaching operation.

According to a second aspect of the present invention, in the configuration of the first aspect, the main bar is composed of three copper bars arranged in parallel, and the three copper bars are vertically or perpendicular to the arrangement direction. They are arranged side by side in the left-right direction, the width direction of each copper bar is the front-rear direction of the distribution board, and the surface to which the branch breaker is connected faces the front of the distribution board, and the front closure member is the door It is characterized by comprising.
According to this configuration, since the front side of the distribution board is used as the breaker connection surface, the branch breaker attachment / detachment operation is a front / rear operation, which is not a lateral operation with respect to the main trunk bar as in the prior art. Easy to do.

The invention according to claim 3 is a branch breaker having an operation handle for turning on / off the electric circuit on the upper surface of the casing, a power supply side terminal on the rear side, and a load side terminal on the front side. A pair of terminal fittings for connecting to two copper bars of the main bar of the distribution board according to claim 2, provided on a protruding portion that protrudes further rearward from above the back portion of the power distribution board. It is characterized by comprising.
According to this configuration, the power supply side terminal can be connected to the main bar by pushing down the branch breaker (when viewed from the distribution board, pushing from the front). Compared to work in a narrow work space that is operated laterally, it is possible to work in a wide space and easy to attach and detach. Further, since the main bar can be arranged at the rear of the casing, the casing of the branch breaker can be arranged adjacent to the main bar as in the conventional case, and the amount of forward protrusion does not increase greatly.

According to a fourth aspect of the present invention, in the configuration of the third aspect, one of the pair of terminal fittings of the power supply side terminal is fixedly arranged, and the other terminal fitting is assembled to a position changing means provided on the protruding portion. Thus, it is characterized in that it is formed so as to be movable before and after one terminal fitting.
According to this configuration, if one terminal fitting is connected to the central bar among the three main bars arranged in parallel to the distribution board, the other terminal fitting is connected to the left and right of the central bar. Either bar can be connected, and there is no need to provide a switching mechanism on the main bar side.

According to a fifth aspect of the present invention, in the configuration according to the third or fourth aspect, the projecting portion is formed with a width that is approximately a half of the width of the housing, and the side surface is continuous from one side surface of the housing. It is characterized by having.
According to this configuration, when the branch breakers are arranged on the left and right of the main bar in the distribution board, the two branch breakers are assembled with the width of one branch breaker if they are arranged so as to overlap each other. it can. Therefore, the branch breaker can be arranged efficiently.

According to a sixth aspect of the present invention, in the distribution board according to the second aspect, the branch breaker according to any one of the third to fifth aspects is assembled.
According to this configuration, since the main bar is not exposed due to the presence of the closing member regardless of the presence or absence of the branch breaker, the branch breaker can be added or changed without turning off the main breaker. Moreover, since the attachment / detachment operation is performed from the front side of the main bar, the branch breaker can be attached / detached easily by the operation in the front / rear direction.

According to the distribution board of the present invention, when the branch breaker is removed, the door of that portion is closed, and the surface not related to the mounting of the branch breaker is always closed by the closing member, so that the main bar may be exposed. Absent. Therefore, even if the branch breaker is attached or detached while the main bar is charged, an electric shock accident can be prevented, and an unexpected accident can be prevented without turning the main breaker off during the branch breaker attaching / detaching operation.
Further, according to the branch breaker of the present invention, the power supply side terminal can be connected to the main bar by pushing down the branch breaker (when viewed from the distribution board, the push-in operation from the front). Thus, it is possible to work in a wide space compared to work in a narrow work space operated in the horizontal direction in the distribution board, and it is easy to attach and detach. Further, since the main bar can be arranged at the rear of the casing, the casing of the branch breaker can be arranged adjacent to the main bar as in the conventional case, and the amount of forward protrusion does not increase greatly.

It is a perspective view which shows an example of the distribution board which concerns on this invention, and shows the branch breaker to mount | wear with the main bar straight line part which connects a branch breaker. In the structure of FIG. 1, it is the figure which exposed the main bar | burr, (a) is a front view, (b) is a bottom view, (c) is a bottom view equipped with the branch breaker. A branch breaker is shown, (a) is a perspective view, (b) is a side view. It is the perspective view which rotated the power supply side terminal of the branch breaker. It is the perspective view which expanded a part of FIG. It is explanatory drawing which shows the latching relationship of a branch breaker and a door member.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a main part showing an example of a distribution board according to the present invention, and shows a branch breaker mounting portion formed in a straight shape of a main bar. In FIG. 1, 1 is a main bar, 2 is a branch breaker, 3 is a cover as a closing member that covers the main bar, and in FIG. 1, the main bar 1 is arranged vertically and the branch breaker 2 is mounted on the left and right sides thereof. Is shown.
The main bar 1 is arranged from the secondary side of a main circuit breaker (not shown) and is composed of three strip-shaped copper bars. The three copper bars are arranged so as to overlap in the thickness direction and have side surfaces facing the front of the distribution board, and have branch breaker connecting portions arranged in a straight line as shown in FIG. Here, the main bar 1 composed of a single-phase three-wire electric circuit is shown, and three copper bars of two voltage phase copper bars 1a and 1c on the left and right and a neutral phase copper bar 1b in the center extend vertically. Has been configured.

  The cover 3 that covers the main bar 1 is composed of two side plates 31 that cover both side surfaces of the main bar 1 and a plurality of door members 32 that cover the front surface. It is connected via a connecting piece 3a that forms a part, and is integrally formed of a metal plate. The door member 32 constitutes a breaker insertion portion that connects the branch breaker 2 to the main trunk bar 1 and is disposed on an open front surface that includes an opening surrounded by the side plate 31 and the connecting plate 3a.

The door member 32 is formed of an insulating member, and includes a pair of doors 32a that opens inward. One door 32a corresponds to the connection of one branch breaker 2. A frame 32 c in the longitudinal direction of the door member 32 is a rotation axis of the door 32 a and is pivotally attached to the side plate 31.
The door member 32 is formed in accordance with the width of the branch breaker 2 to be mounted, and one door 32a of the pair of doors 32a is used for connecting the branch breaker 2 disposed on the left side, for example. One door 32a is used to connect the branch breaker 2 arranged on the right side so as to face each other. A plurality of door members 32 are continuously arranged in the front opening of the cover 3.
In addition, in FIG. 1, a mode that the upper door 32a of the uppermost door member 32 is opened and the branch breaker 2 is connected is shown.

  2 shows a state in which the door member 32 other than the uppermost door member 32 is removed in the state of FIG. 1 and the main bar 1 is exposed, (a) is a front view, (b) is a bottom view, and (c). These are bottom views of the state which completed the connection of the branch breaker 2. FIG. As shown in FIG. 2, the front side of the main bar 1 is a connection surface with the branch breaker 2, and the branch breaker 2 is connected by pushing from the front to the rear of the distribution board.

  FIG. 3 shows the branch breaker 2, (a) is a perspective view seen from the rear, and (b) is a side view. An operation handle 22 for performing an on / off operation is provided on the upper surface of the casing 21, and a power supply side terminal 23 is disposed on the rear side, and a load side terminal (shown in FIG. 2) 24 is disposed on the front side. The power supply side terminal 23 is provided on a protruding portion 25 that protrudes further rearward from above the back portion of the housing 21, and a pair of terminal fittings 10 (first terminal fitting 10 a and second terminal fitting 10 b) are provided on the lower surface of the protruding portion 25. It protrudes downward and is provided.

In addition, at the front and rear end portions of the protruding portion 25, an opening pin 26 for opening the door 32a when connecting to the main bar 1 is provided. The opening pin 26 is formed so as to be inserted into a predetermined opening hole 32 b (shown in FIG. 1) provided in the door member 32, and protrudes downward from the terminal fitting 10.
The terminal fitting 10 is formed by a clamping piece that clamps the main bar 1, and the load side terminal is configured by a screw terminal that screws the branch cable ().

One terminal fitting (first terminal fitting 10a) of the power supply side terminal 23 corresponds to the neutral phase copper bar 1b arranged at the center of the main bar 1 composed of three copper bars, and is fixedly arranged. On the other hand, the other terminal fitting (second terminal fitting 10b) is formed to be movable so as to correspond to both of the two voltage phase copper bars 1a and 1c of the main bar 1.
Specifically, in the vicinity of the first terminal fitting 10 a formed at substantially the center of the protruding portion 25, a surface having a rotation axis in the vertical direction perpendicular to the upper surface of the housing 21 and parallel to the upper surface of the housing 21. A rotating member 28 that rotates 180 degrees is provided, and the second terminal fitting 10 b is disposed at the tip of the rotating member 28. Therefore, one of the two voltage phase copper bars 1a and 1c to be connected can be selected in a state in which the tip of the rotating member 28 is directed rearward and a state in which the rotating member 28 is rotated forward 180 degrees and directed forward. Yes. FIG. 4 shows a state in which the rotating member 28 is rotated halfway.

  Next, the structure of the cover 3 and the door member 32 will be described with reference to FIGS. FIG. 5 is an enlarged perspective explanatory view of the branch breaker 2 in the state of FIG. 2 and a portion to which the branch breaker 2 is attached. When the branch breaker 2 is brought close to the door member 32 as shown in FIG. The opening pin 26 is inserted into the branch breaker 2 in the opening hole 32b.

  FIG. 6 is an explanatory view of the door member 32 as viewed from the side, and shows a state where the branch breaker 2 is inserted partway. As shown in FIG. 6, a door closing mechanism 35 including a pair of coil springs 35 a for each door member 32 is provided inside the side plate 31. In the closing mechanism 35, coil springs 35a are provided for the individual doors 32a, and are accommodated and held in the front-rear direction of the distribution board. At the tip of the coil spring 35a, a door support piece 36 having an engaging recess 36a that contacts the back of the door 32a and engages the door opening pin 26 is disposed. In addition, in FIG. 6, the structure which has arrange | positioned two door closing mechanism parts 35 is shown.

  When the branch breaker 2 is mounted, the door opening pin 26 pushes down the door support piece 36 of the door closing mechanism 35 as described above, thereby releasing the door closing state by the door closing mechanism 35 and opening the door 32a. When the mounting operation of the branch breaker 2 is advanced in this way, the terminal fitting 10 comes into contact with the corresponding main bar 1 and is further inserted to be gripped and connected. FIG. 2 (c) shows the state of connection in this way.

  Here, the formation position of the protrusion part 25 of the branch breaker 2 is demonstrated. The projecting portion 25 of the branch breaker 2 is half the width of the branch breaker 2 and is disposed so as to be biased to one side. By comprising in this way, when the branch breaker 2 is opposingly arranged on the right and left of the main bar 1, the protrusion part 25 can be arrange | positioned and the branch breakers 2 can be arrange | positioned linearly. Further, two branch breakers 2, 2 arranged to face each other can be inserted into one door member 32 and connected to the main bar 1. As described above, when the branch breakers 2 are arranged on the left and right of the main bar 1 in the distribution board, the two branch breakers 2 are arranged in the width of one branch breaker 2 by overlapping the protrusions 25 with each other. Can be arranged efficiently.

  If the branch breaker 2 is extracted from this state, the door 32 is closed by the action of the closing member 35, so that the main trunk bar 1 is not exposed.

In this way, when the branch breaker 2 is removed, the door 32a of that portion is closed, and the surface not related to the mounting of the branch breaker 2 is always closed by the cover 3, so that the main bar 1 is not exposed. Therefore, even if the branch breaker 2 is attached / detached while the main bar 1 is charged, an electric shock can be prevented, and an unexpected accident can be prevented without turning off the main breaker during the attachment / detachment of the branch breaker 2. .
In addition, since the power supply side terminal can be connected to the main bar 1 by pushing downward the branch breaker 2 (when viewed from the distribution board, it is pushed from the front) Compared to work in a narrow work space that is operated in the horizontal direction, it is possible to work in a wide space and easy to attach and detach. Further, since the main bar 1 can be arranged behind the case 21, the case 21 of the branch breaker 2 can be arranged adjacent to the main bar 1 as in the prior art, and the amount of forward protrusion does not increase greatly. .
Further, if one terminal fitting 10a of the two terminal fittings 10a, 10b of the power supply side terminal 23 is connected to the central neutral phase copper bar 10b of the three main bars 1, the other The terminal fitting 10b can be connected to any of the left and right voltage phase copper bars 10a and 10c, and there is no need to provide a switching mechanism on the main bar 1 side.
Further, when the branch breakers 2 are arranged on the left and right of the main bar 1 in the distribution board, if the two projecting portions 25 are arranged so as to overlap each other, the two branch breakers 2 are formed with the width of one branch breaker 2. The branch breaker 2 can be efficiently arranged.

  In the above-described embodiment, the configuration in which the branch breaker 2 is mounted from the front by arranging the three main bars 1 so as to face the front of the distribution board has been described. However, the main bar 1 is overlapped in the front-rear direction. In this case, the door member 32 is disposed on the side surface of the cover 3, and the front surface is always closed. Further, the power supply side terminal 23 of the branch breaker 2 is formed on the back portion of the casing 21 so as to face rearward.

  1 .... trunk bar, 1a ... voltage phase copper bar, 1b ... neutral phase copper bar, 1c ... voltage phase copper bar, 2 .... branch breaker, 3 .... cover (blocking member), 10 ... terminal Metal fitting, 21..Case, 22..Operating handle, 23..Power supply side terminal, 24..Load side terminal, 25..Projection, 26 .... Door pin, 28 .... Rotating member (position changing means) ), 31 .. side plate (closing member), 32 .. door member (closing member), 32 a .. door, 32 b .. opening hole, 35 .. door closing mechanism, 35 a.

Claims (6)

The main bar connected to the secondary side of the main breaker has a straight portion for connecting the branch breaker, and the branch breakers are arranged on at least one side of the straight portion and connected to the main bar. An electrical panel,
The straight portion of the main bar is composed of three surfaces, a front surface facing the front of the distribution board and two side surfaces on both sides thereof, surrounded by a blocking member, of which the blocking member disposed on the surface connecting the branch breaker is a branch breaker The door is arranged according to the connection position of
The distribution board characterized in that the door opens and closes in conjunction with the attachment and detachment of the branch breaker. The main bar is composed of three copper bars arranged in parallel, and the three copper bars are arranged side by side in the vertical and horizontal directions perpendicular to the arrangement direction, and the width of each copper bar. The direction is the front-rear direction of the distribution board,
2. The distribution board according to claim 1, wherein a surface connecting the branch breaker is a front surface facing the front of the distribution board, and the closing member on the front surface includes the door. A branch breaker having an operation handle for turning on / off the electric circuit on the upper surface of the housing, a power supply side terminal at the rear, and a load side terminal at the front;
The power supply side terminal is provided in a protruding portion that protrudes further rearward from above the back portion of the housing, and is formed on the lower surface of the protruding portion with two coppers of the main bar of the distribution board according to claim 2. A branch breaker comprising a pair of terminal fittings for connection to a bar.   One of the pair of terminal fittings of the power supply side terminal is fixedly arranged, and the other terminal fitting is assembled to a position changing means provided on the projecting portion so as to be movable forward and backward of the one terminal fitting. The branch breaker according to claim 3, wherein the branch breaker is formed.   5. The projecting portion is formed with a width that is approximately one half of the width of the housing, and has a side surface that continues from one side surface of the housing. Branch breaker described.   The distribution board according to claim 2, wherein the branch breaker according to any one of claims 3 to 5 is assembled.

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