JP2003244806A - Distribution board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a distribution board which secures the insulation performance of an inside cover and holds the inside cover firmly when a breaker is opened and closed. <P>SOLUTION: This distribution board has a metal box 1 having an opening on one side, a main breaker 2 and a branch breakers 3 in the metal box 1, an inside cover 4 having windows 23 and 24 through which handles 2a and 3a of the main breaker 2 and the branch breakers 3 protrude and is attached to the box 1 so as to close the opening of the box 1, and a metal outside cover 5 which is rotatably attached to the box 1 so as to cover the inside cover 4. The inside cover 4 has an insulating panel 29, which has the windows 23 and 24 and is placed on the center side of the opening of the box 1 corresponding to the main breaker 2 and the branch breakers 3, and a metal frame member 30 provided with the insulating panel 29 fixed on the opening edge of the box 1. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board using a metal box body.

[0002]

2. Description of the Related Art As a conventional example, there is one disclosed in JP-A-11-155206.

This is a box body having a metal box body having a one-sided opening, a main breaker and a branch breaker disposed in the box body, and a window hole through which a handle of the main breaker and the branch breaker is projected. Is provided with an inner lid that is attached so as to close the opening, and a metal outer lid that is rotatably attached to the box body so as to cover the inner lid.

[0004]

However, since the inner lid is formed by bending a piece of metal, if the electric wire connected to each breaker accidentally comes off and comes into contact with the inner lid, the breaker is opened or closed. There was a drawback that you could get an electric shock if your hand touched the inner lid.

Generally, in a distribution board having such a metal box body, a ground wire is connected to the bottom of the box body to prevent electric shock. A person may forget to connect the ground wire or the ground wire may come off.

Therefore, the object of the present invention was made in view of the above circumstances, and an object of the present invention is to achieve insulation of the inner lid when the breaker is opened and closed and to firmly hold the inner lid. It is to provide an electric board.

[0007]

According to a first aspect of the present invention, there is provided a distribution board in which a metal box body having a one-side opening, a main breaker and a branch breaker arranged in the box body, and the main breaker and the branch breaker are provided. In a distribution board having a lid having a window hole for projecting a handle and closing the opening of the box body, the lid has the window hole, the main breaker and the branch. An insulating panel provided on the center side of the opening of the box body corresponding to the breaker, and a metal frame member attached to the opening edge of the box body by attaching the insulating panel. Is.

According to the distribution board of the first aspect, since the central portion of the lid corresponding to each breaker is insulative, the electric wire connected to each breaker accidentally comes off and comes into contact with the insulative panel. Insulation can be achieved when the breaker is opened and closed, and since the outside is made of metal, the inner lid can be strengthened.

According to a second aspect of the present invention, there is provided a distribution board according to the first aspect, in which a pair of mounting frames are attached to two opposite sides of the opening green of the metal frame member, and the insulating frame is attached to the pair of mounting frames. The sex panel is detachably attached.

According to the distribution board of claim 2, claim 1
In addition to the same effect as above, since the insulating panel is detachably attached to the pair of mounting frames, the insulating panel can be easily attached to the metal frame member.

According to a third aspect of the present invention, there is provided a distribution board according to the second aspect, wherein a hole is formed at an opening edge of the metal frame member, and a projection that fits into the hole is formed at the pair of mounting frames. One sandwiching piece and a second sandwiching piece that sandwiches the metal frame member from both front and back surfaces are formed together with the first sandwiching piece.

According to the distribution board of claim 3, claim 2
In addition to the same effect as above, the mounting frame can be attached with one touch by inserting the mounting frame from the opening edge of the metal frame member so as to sandwich the front and back surfaces of the metal frame member. The work of attaching becomes easy.

According to a fourth aspect of the present invention, there is provided a distribution board according to the second or third aspect, wherein the insulating panel is a first panel corresponding to a main breaker and a second panel corresponding to a branch breaker.
It is divided into panels and.

According to the distribution board of claim 4, claim 2
In addition to the same effect as in claim 3, even when the number of branch breakers is changed, the first panel corresponding to the main breaker is shared and only the second panel corresponding to the branch breaker is changed according to the number of branch breakers. All that is required is to make the first panel corresponding to the main breaker common.

According to a fifth aspect of the present invention, there is provided a distribution board according to the fourth aspect, in which at least one of the first panel and the second panel is slid and attached to the metal frame member.

According to the distribution board of claim 5, claim 4
In addition to the same effect as above, the first panel or the second panel is attached by sliding to the mounting frame, so there is no need to bend and attach both sides facing the mounting frame, and prevent the panel from being damaged. it can.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. That is, this distribution board has a metal box body 1 with one opening, a main breaker 2 and a branch breaker 3 arranged in the box body 1, an inner lid 4, and an outer lid 5.
Have.

The metal box body 1 has mounting holes 7 for mounting a wall surface or the like at the bottom, knocking out portions 8 for wire passages at the upper and lower positions of the bottom, and a reverse hat-shaped cross section at the center of the bottom. The mounting plate 9 is fixed by welding or the like. A large number of screw holes 12 are formed at predetermined positions in the mounting plate 9 corresponding to various branch breakers 3. The hook portions 11 of the receiving plate 10 are hooked on both ends of the attaching plate 9, and the receiving plate 10 is attached to the attaching plate 9 by tightening a part of the screw hole 12 with a screw 13, and the inner lid attaching member 14 is attached to the receiving plate 10. It is standing. Further, a plurality of knockout holes 16 for passing wires are formed on the side wall 15 at the top of the box body 1,
A brim 17 is formed at the opening edge of the box body 1 so as to project inward. Reference numeral 18 is a ground connection portion provided on the bottom.

The main breaker 2 and the branch breaker 3 are attached to the board 20. A large number of branch breakers 3 are arranged vertically in two horizontal rows. The main breaker 2 is arranged at the left end of the branch breaker 3 in the arrangement direction.
The main breaker 2 and the branch breaker 3 are connected via a bar (not shown) arranged along the branch breaker 3 and a conductor connecting the bar and the output end of the main breaker 2. Both ends of the substrate 20 are attached to the receiving plate 10 by being hooked by the hook portions 60 and screwed by the screws 22.

The inner lid 4 has window holes 23, 2 through which the handles 2a, 3a of the main breaker 2 and the branch breaker 3 project.
4 is attached so as to close the opening of the box body 1. In the embodiment, the left and right sides of the inner lid 4 are attached to the upper end of the inner lid attaching member 14 by the attachments 25. The inner lid 4 is placed on the upper end portion of the inner lid mounting member 14, and the mounting tool 25 is configured such that a slide piece (not shown) is slid on the locking portion of the inner lid mounting member 14 to be mounted. FIG. 6 is a front view of the state where the inner lid 4 is attached, and the handles 2a, 3a of the main breaker 2 and the branch breaker 3 appear in the window holes 23, 24. Reference numeral 50 is a display unit such as a branch breaker.

The inner lid 4 of the embodiment will be described in detail below.
The inner lid 4 has window holes 23 and 24, and an insulating panel 29 arranged on the opening center side of the box body 1 corresponding to the main breaker 2 and the branch breaker 3, and this insulating panel 29 is attached. And a metal frame member 30 arranged at the opening edge of the box body 1. As shown in FIGS. 3 to 5, the metal frame member 30 has a pair of mounting frames 31 attached to two opposing sides (upper and lower sides in the drawing) of the opening green, and the insulating panels 29 are attached to the pair of mounting frames 31. Is detachably attached. When the insulating panel 29 is detachably attached to the pair of mounting frames 31 as described above,
The insulating panel 29 can be easily attached to the metal frame member 30. In this case, a hole 33 is formed at the opening edge of the metal frame member 30, and a pair of mounting frames 31 is formed with a projection 34 that fits into the hole 33. The 2nd which sandwiches the frame making member 30 from both front and back sides
The holding piece 36 is formed. In this way, the mounting frame 31 can be inserted with one touch by inserting the mounting frame 31 from the opening edge of the metal frame member 30 so as to sandwich the front and back surfaces of the metal frame member 30, and thus the mounting frame 31 can be made of metal. Frame member 30
The work of attaching to is easy. The protrusion 34 is the first holding piece 3
The surface of the groove formed between 5 and the second sandwiching piece 36 facing the opening side is inclined so that the metal frame member 30 can be easily inserted and easily inserted into the hole 33 and difficult to be removed from the hole 33. On the side of the mounting frame 31 opposite to the sandwiching pieces 35, 36, a plurality of projecting pieces 42 projecting inward of the opening of the metal frame member 30 are formed at regular intervals in the longitudinal direction.

The insulating panel 29 has a plurality of hook-shaped locking pieces 43 formed on the back surfaces on both sides, and the width of the locking pieces 43 is set to the protruding piece 42.
The width is such that it can be inserted in between, and at a position where the insulating panel 29 is slightly displaced in the longitudinal direction of the mounting frame 31 from the mounting position on the metal frame member 30, a predetermined interval is set so as to be the position between the projecting pieces 42. Formed (see FIG. 7). The insulating panel 29 is the first panel 39 corresponding to the main breaker 2.
And a second panel 40 corresponding to the branch breaker 3 are divided and configured. In this way, when the number of branch breakers is changed, the first panel 39 corresponding to the main breaker 2 is shared, and only the second panel 40 corresponding to the branch breaker 3 is changed according to the number of branch breakers 3. Good, the first panel 39 corresponding to the main breaker 2 can be shared.

In this case, the first and second panels 39, 4
At least one of 0 is slid to mount frame 31
When it is attached, it is not necessary to bend and attach both sides facing the mounting frame 31, and it is possible to prevent the panel from being damaged. Explaining with reference to FIGS. 7 to 10, FIG. 7 is a front view of the inner lid, and the second piece 40 is slightly displaced from the mounting position so that the locking piece 43 is located between the projecting pieces 42.
A state in which the panel 40 is placed on the projecting piece 42 of the metal frame member 30 is shown, and FIG. 8 is a rear view thereof. FIG. 9 shows the second panel 4
FIG. 10 is a rear view of the state in which 0 is slid to move to the mounting position and the locking piece 43 is locked to the projecting piece 42, and FIG. 10 is a front view thereof. The first panel 39 is attached by bending the first panel 39 and locking the locking piece 43 to the projecting piece 42.

The outer lid 5 is made of metal and is rotatably attached to the box body 1 so as to cover the inner lid 4. Box 1 in the embodiment
A screw hole 51 is formed in the collar 17 of the collar 17 so that the opening frame 52 has the screw 5
3 is attached to the screw hole 51. The outer lid 5 is the opening frame 5
2 is rotatably attached to the side portion of the outer lid 5 by a hinge 54, an elastic locking portion 55 is provided at the rotating end of the outer lid 5, and the elastic locking portion 55 is disengaged from a hook receiving portion 56 provided in the opening frame 52. I try to hook it freely. Since the opening frame 52 is larger than the inner lid 4, the inner lid 4 can be attached and detached with the outer lid 5 opened.

According to this embodiment, since the central portions of the inner lid 4 corresponding to the breakers 2 and 3 are insulative, the electric wires connected to the breakers 2 and 3 are accidentally disconnected and the insulating panel is formed. Even if it comes into contact with 29 or the metal outer lid 5, insulation at the time of opening and closing the breaker can be achieved and safety against electric shock can be achieved, and since the outer side of the inner lid 4 is made of metal, the inner lid 4 is firmly fixed. Can be

[0026]

According to the distribution board of the first aspect, since the central portion of the lid corresponding to each breaker is insulative, the electric wire connected to each breaker accidentally comes off and comes into contact with the insulative panel. Even if the breaker is opened / closed, insulation can be achieved, and since the outside is made of metal, the inner lid can be strengthened.

According to the distribution board of claim 2, claim 1
In addition to the same effect as above, since the insulating panel is detachably attached to the pair of mounting frames, the insulating panel can be easily attached to the metal frame member.

According to the distribution board of claim 3, claim 2
In addition to the same effect as above, the mounting frame can be attached with one touch by inserting the mounting frame from the opening edge of the metal frame member so as to sandwich the front and back surfaces of the metal frame member. The work of attaching becomes easy.

According to the distribution board of claim 4, claim 2
In addition to the same effect as in claim 3, even when the number of branch breakers is changed, the first panel corresponding to the main breaker is shared and only the second panel corresponding to the branch breaker is changed according to the number of branch breakers. All that is required is to make the first panel corresponding to the main breaker common.

According to the distribution board of claim 5, claim 4
In addition to the same effect as above, the first panel or the second panel is attached by sliding to the mounting frame, so there is no need to bend and attach both sides facing the mounting frame, and prevent the panel from being damaged. it can.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view of a distribution board with an outer lid opened.

FIG. 3 is an exploded perspective view of an inner lid.

FIG. 4 is a sectional view of an inner lid.

FIG. 5 is a partially enlarged view thereof.

FIG. 6 is a front view of the distribution board without an outer lid with an inner lid attached.

FIG. 7 is a front view showing a state where a second panel of the inner lid is slid.

FIG. 8 is a rear view of the same.

FIG. 9 is a rear view showing a state where the second panel is moved to the mounting position and the first panel is mounted.

FIG. 10 is a front view thereof.

[Explanation of symbols]

1 box 2 Master breaker 2a handle 3-branch breaker 3a handle 4 Inner lid 5 outer lid 23 windows 24 windows 29 Insulating panel 30 Metal frame member 31 mounting frame 33 holes 34 Protrusion 35 1st clamping piece 36 Second clamping piece 39 First panel 40 Second Panel 42 Projection piece 43 Locking piece

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kengo Matsui             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works             Within the corporation

Claims (5)

[Claims] 1. A metal box body having a one-sided opening, a main breaker and a branch breaker arranged in the box body, and a window hole through which a handle of each of the main breaker and the branch breaker is projected, and the box body is provided. A distribution board provided with a lid attached so as to close the opening, wherein the lid has the window hole and is disposed on an opening center side of the box body corresponding to the main breaker and the branch breaker. And a metal frame member attached to the insulating panel and arranged at the opening edge of the box body. 2. A pair of mounting frames are attached to the two sides of the metal frame member facing the opening green, and the insulating panels are detachably attached to the pair of mounting frames. Distribution board. 3. A first sandwiching piece having a hole formed in an opening edge of the metal frame member and a projection fitting in the hole in the pair of mounting frames, and the metal together with the first sandwiching piece. The distribution board according to claim 2, wherein a second holding piece that holds the frame member from both front and back sides is formed. 4. The distribution board according to claim 2, wherein the insulating panel is divided into a first panel corresponding to a main breaker and a second panel corresponding to a branch breaker. 5. The distribution board according to claim 4, wherein at least one of the first panel and the second panel is slid and attached to the metal frame member.