JPH0984224A - Distribution board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distribution board in which sufficient insulation distances of connection bars can be obtained without using a large enclosure and using an insulating cover. SOLUTION: A distribution board has an enclosure 8, a main breaker 1, a branch breaker 3, main bars 2a-2c and connection bars 4a-4c with which the main bars 2a-2c are connected to the output terminals 6 of the main breaker 1. The middle part planes of the voltage side connection bars 4a and 4c which are connected to the output terminals 6 of both sides of the breaker 1 are perpendicular to the bottom 7 of the enclosure 8, The middle part plane of the neutral side connection bar 4b which is connected to the center output terminal 6 of the main breaker 1 is in parallel with the bottom 7 of the enclosure 8 and so placed as to have more distance than the voltage side connection bars 4a and 4c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board applied to general households and the like.

[0002]

2. Description of the Related Art FIG. 15 shows a conventional example. That is, this distribution board is provided with an intermediate portion 101 of an L-shaped feed bar 100 that connects a main breaker (not shown) and a main bar (not shown) connected to a branch breaker (not shown). A plane is formed vertically on the bottom of a box (not shown) as shown, and one end 102 is connected to the output terminal of the main breaker and the other end 103
Is to be connected to the main bar. Also the feed bar 10
An insulating cover 104 is attached to insulate the zero intermediate portions 101.

[0003]

In this distribution board, the plane of the intermediate portion 101 of the feed bar 100 is perpendicular to the bottom of the box body, but if the space is narrowed, an insulating cover for insulating between the feed bars 100 is provided. There was a drawback that 104 was required.
Further, if the distance between the intermediate portions 101 of the feed bar 100 is increased, there is a drawback that the box body itself becomes large.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a distribution board in which the feed bar can be sufficiently insulated without increasing the size of the box and requiring an insulating cover. is there.

[0005]

According to a first aspect of the present invention, there is provided a distribution board according to claim 1, which has a box and a three-pole input / output terminal at both ends, is attached to the bottom of the box, and has a central input terminal as an electric circuit. A main breaker connected to the neutral line and having input terminals on both sides connected to the voltage line of the electric circuit, a plurality of branch breakers mounted on the bottom of the box alongside the main breaker, and an array of these branch breakers. A main bar connected to the input terminal of the branch breaker, and three feed bars connecting the output terminal of the main breaker and the main bar, the main bar being arranged in the bottom of the box body along the direction; Of the feed bar, the voltage side feed bar connected to the output terminals on both sides of the main breaker has a plane in the middle thereof perpendicular to the bottom of the box, and is connected to the central output terminal of the main breaker. The feed bar on the neutral side is Plane The inter is characterized in that it is located away from the bottom than the feed bar of the voltage-side parallel to the bottom of the box body.

According to the distribution board of the first aspect, the main breaker and the branch breaker are connected through the feed bar and the main bar. In this case, the plane of the middle portion of the feed bar on the voltage side is perpendicular to the bottom of the box body, and the plane of the middle portion of the feed bar on the neutral side is parallel to the bottom portion of the box body and more than the feed bar on the voltage side. Since it is also placed away from the bottom part, the insulation interval between the middle parts of the feed bar can be made wider than before, the box can be downsized, and extra members such as an insulation cover are unnecessary. .

The distribution board of claim 2 is the same as that of claim 1.
The box body is provided with an insulating portion for partitioning an intermediate portion of the voltage side feed bar and an intermediate portion of the neutral side feed bar. According to the distribution board of the second aspect, in addition to the effect of the first aspect, the insulation between the feed bars can be more surely achieved by the insulating portion.

According to a third aspect of the present invention, there is provided a distribution board according to the first or second aspect, in which an intermediate portion of the feed bar on the voltage side is covered with an intermediate portion of the feed bar on the neutral side. According to the distribution board of claim 3, in addition to the effect of claim 1 or claim 2, even if the worker tries to touch the middle part of the feed bar, it is connected to the central output terminal of the main breaker. Only the feed bar on the neutral side can be touched, and it is hard to get an electric shock, so it is safe.

According to a fourth aspect of the present invention, there is provided a distribution board according to the third aspect.
The insulating portion is made higher than the height of the intermediate portion of the voltage side feed bar. According to the distribution board of claim 4, in addition to the effect of claim 3, even if the feed bar on the neutral side is deformed to the feed bar on the voltage side, the feed bar on the neutral side hits the insulating portion, so that the voltage is applied. Side feed bar is less likely to come into contact and the risk of short circuit is reduced.

The distribution board of claim 5 is the same as that of claim 3.
The insulating portion is in contact with the center-side feed bar. According to the distribution board of claim 5, in addition to the effect of claim 3, the feed bar on the neutral side is less likely to be deformed to the feed bar side on the voltage side.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described with reference to FIGS. That is, this distribution board has a main breaker 1, main bars 2a to 2c, a branch breaker 3, feed bars 4a to 4c, and a box 8.
First, the box body 8 is the bar support member 1 of the main bars 2c to 2c.
In order to mount 9, the main breaker 1 and the branch breaker 3 are mounted and mounted on the wall surface of the building. This box 8
Has a pair of locking portions 71, 72 having a base portion protruding from the bottom portion and a tip protruding in the opposite direction. The locking portion 71 is provided integrally with the mounting portion 62 of the branch breaker 3. The mounting table 62 is formed in a stripe shape in the horizontal direction of the bottom portion 7 of the box body 8, a plurality of fitting recesses 70 are formed on the side surface thereof, and a locking portion 71 is formed inside the fitting recesses 70. ing. Locking part 72
Is formed by forming a projecting portion on the bottom portion 7 of the box body 8 facing the locking portion 71 and forming a recess on the surface facing the locking portion 71.

Further, in order to support the branch breaker 3, there are provided substantially L-shaped hooking portions 51 and 52 which are projectingly provided on the bottom portion 7 of the box body 8 and whose tips extend upward (in the direction of the arrow). And mounting portions 59 and 62 projecting from the
It has a mounting hole 63 (FIG. 11) formed in. Hook part 5
There are a plurality of hooks 51 and 52, and the tips of the hooks 51 and 52 form guide tapers 53 on the bottom 7 side for guiding hooks 54 and 57, which will be described later. In addition, the mounting portions 59 and 62 are hook portions 51,
It is formed to be higher than 52, and the plurality of mounting portions 59 are formed in a conical trapezoidal shape, and a mounting hole 63 is formed in the center. A female screw may be formed in advance in the mounting hole 63, or tapping may be performed by screwing the screw 27. The mounting portion 62 is formed integrally with the pair of hook portions 52.

The box body 8 is formed such that the wiring opening 10 is formed in the upper portion and the bottom portion 7 by breaking the knockout plate. Reference numeral 11 is a mounting hole, and 12 is a cover locking portion for locking the cover 9 detachably. The cover 9 that covers the box body 8 has holes 43 through which the handles 1a and 3a of the main breaker 1 and the branch breaker 3 pass.

The main breaker 1 has three pole input / output terminals 5,
It has 6 at both ends and is attached to the bottom portion 7 of the box body 8, and the central input terminal 5 is connected to the neutral line of the electric line, and the input terminals 5 on both sides are connected to the voltage line of the electric line. This main breaker 1 is arranged on the left side of the box body 8 when viewed from the front, and is attached to the mounting plate 13
Is attached to the box body 8 with screws 15. The three-pole input terminal 5 of the main breaker 1 is provided at the upper end near the wiring opening 10, and the three-pole output terminal 6 is provided at the lower end.

Three main bars 2a to 2c are arranged on the bottom portion 7 of the box body 8 along the arrangement direction of the branch breakers 3 and connected to the input terminals 23 of the branch breakers 3. That is, the three trunk bars 2 a to 2 c are arranged laterally of the trunk breaker 1 so as to be orthogonal to the side surface 16 of the trunk breaker 1 and extend in the longitudinal direction of the mounting portion 62. The central bar 2b of the main bars 2a to 2c is the other bar 2a,
2c is arranged higher than the 2c in the direction away from the bottom 7, and the bars 2a and 2c on both sides are staggered from each other.
c is lower than the central bar 2b, but higher than the bar 2a. The bars 2a and 2c are voltage bars and are formed in a strip plate shape, and the bars 2b are neutral bars and are formed in a flat corrugated strip plate shape. A terminal screw 17 is provided at a position facing the branch breaker 3. A connecting piece 18 is connected to the screw 17.

The bar support member 19 has a non-elastic locking piece 73 that locks to the locking portion 72 and an elastic locking piece 74 that locks to the locking portion 72, and is mounted on the bottom 7 so as not to come off. Has been done. The non-elastic locking piece 73 is projectingly provided on one side surface of the bar supporting member 19, has a guide taper 75 whose tip is narrowed on the upper surface, and locks so as to fit in the recess of the locking portion 72. It also serves to position the bars 2a to 2c in the longitudinal direction.
The elastic locking piece 74 has a base end portion 74a protruding from the side surface of the bar support member 19, an intermediate portion 74b positioned parallel to the side surface of the bar support member 19, and a pawl 74 that locks the locking portion 71 at the tip.
The intermediate portion 74b is fitted in the fitting concave portion 70 of the locking portion 71 (FIG. 10).

The main bars 2a to 2c are bar holders 19.
And the bars 2a and 2c are fixed on both sides of the bottom of the bar holder 19 in the above-described staggered configuration.
Is held by a claw 21 on a support base 20 in the center of the bar holder 19 and is higher than the other bars 2a and 2c. 22
Is a cover plate mounting post, 40 is a cover plate,
Reference numeral 46 is a holding claw that holds the cover plate 40.

The plurality of branch breakers 3 are the main breakers 1
Are attached to the bottom portion 7 of the box body 8 side by side. That is, the plurality of branch breakers 3 are disposed on the upper side along the trunk bars 2a to 2c, and the input terminals 2 are connected to the trunk bars 2a to 2c.
3 are connected by a connecting piece 23. The side surface 24 of the branch breaker 3 on the side of the main breaker 1 is located on the extension line on the other end 30b side of the central feed bar 4b, which will be described later, that is, on the bar connection side.

The mounting plate 25 is for mounting the branch breaker 3 and has hooking pieces 54 and 57 for temporary fixing which are hooked on the hooking portions 51 and 52, and is mounted and mounted on the mounting portions 59 and 62. It is screwed into the hole 63 with a screw 27. The hooking piece 57 is formed by cutting and raising a hook-shaped hooking hook that hooks on the hooking portion 52, and the hooking piece 54 bends the side portion of the mounting plate 25 toward the bottom portion 7 and fits into the hooking portion 51. A fitting hole 55 is formed, and the tip 56 of the hooking piece 54 is in contact with the bottom portion 7 of the box body 8. Reference numeral 58 is a positioning portion of the branch breaker 3 formed by cutting and bending, and 64 is a screw hole for mounting the branch breaker 3.

The branch breaker 3 is attached to the attachment plate 25 with screws 26, and the attachment plate 25 is attached to the box body 8 with screws 27. On the other hand, the input terminal 23 of the branch breaker 3
Includes a neutral bar 2b and a voltage bar 2
The connection piece 18 of a or 2c is connected to input 100V, or the connection piece 18 of the bars 2a and 2c is connected to input 200V.

The feed bars 4a to 4c connect the output terminal 6 of the main breaker 1 and the main bars 2a to 2c. Of the feed bars 4a to 4c, the voltage-side feed bars 4a and 4c connected to the output terminals 6 on both sides of the main breaker 1 have a plane in the middle thereof which is perpendicular to the bottom 7 of the box body 8 and the main breaker. The feed bar 4b on the neutral side, which is connected to the output terminal 6 at the center of 1, is arranged such that the plane of its middle portion is parallel to the bottom 7 of the box 8 and is farther from the bottom 7 than the feed bars 4a, 4c on the voltage side. Has been done. Further, the insulating portion 4 for partitioning the intermediate portion of the voltage side feed bars 4a and 4c and the intermediate portion of the neutral side feed bar 4b.
5 is provided in the box body 8, and this insulating portion 45 is in the shape of a wall plate and is erected on the bottom portion 7 and is formed higher than the height of the intermediate portion of the voltage side feed bars 4a and 4b. Further, the intermediate portions of the feed bars 4a and 4b on the voltage side and the upper portion of the insulating portion 45 are covered with the intermediate portions of the feed bar 4b on the neutral side.

The three feed bars 4a to 4c have one end 29 at each end.
a to 29c are connected to the output terminal 6 of the main breaker 1 and the other ends 30a to 30c extend along the side surface 16 of the main breaker 1, and the ends 28a to 28c of the main bars 2a to 2c.
And cross the feed bar 4a-4c and bar 2-
2c and connection portions 31a to 31c. These feed bars 4a to 4c are formed by bending a flat plate, and are substantially L-shaped consisting of one piece 32 and the other piece 33 as shown in FIG. 4, and the feed bars 4a and 4c form an intermediate portion. The plane of one piece 32 is formed in a vertical posture, and the plane of the other piece 33 is formed in a horizontal posture.
In order to run the feed bars 4a to 4c over 6, one piece 32
The feed bar 4c is longer than the feed bar 4c
a is longer. Further, the feed bar 4b is formed such that both the one piece 32 and the other piece 33 forming an intermediate portion have a horizontal plane, and the one piece 32 is the one piece 32 of the feed bars 4a and 4c.
And the other piece 33 has an intermediate length between the other pieces 33 of the feed bars 4a and 4c. And each feed bar 4
Since one end of a to 4c is connected to the output terminal 6, the step bending portion 4
Notches are formed through 1a to 41c, and the other ends of the feed bars 4a and 4b are formed with stepped bent portions 42a and 42b in opposite directions so as to overlap with the main bars 2a to 2c, and the connection portions 31a to 41b are formed at the tips thereof. A hole is formed to pass the connection screw 31c. It should be noted that holes matching these holes are also formed in the ends 28a to 28c of the main bar 2a to 2c.

According to this embodiment, the feed bars 4a ...
4c and the main bar 2a-2c through the main breaker 1
And the branch breaker 3 are connected. In this case, the plane of the middle portion of the feed bars 4a, 4c on the voltage side is perpendicular to the bottom portion 7 of the box body 8, and the plane of the middle portion of the feed bar 4b on the neutral side is parallel to the bottom portion 7 of the box body 8. Voltage side feed bars 4a, 4c
Since it is arranged farther from the bottom portion 7, the insulation interval between the intermediate portions of the feed bar can be made wider than in the conventional case, the box body 8 can be downsized, and extra members such as an insulation cover are not required. Will be needed.

The insulating portion 4 for partitioning the middle portion of the voltage side feed bars 4a and 4c and the middle portion of the neutral side feed bar 4b.
Since 5 is provided in the box body 8, insulation between the feed bars 4a to 4c can be ensured by the insulating portion 45. Further, since the intermediate portion of the feed bar 4b on the neutral side is covered above the intermediate portion of the feed bar 4a, 4c on the voltage side, even if the worker tries to touch the intermediate portion of the feed bar 4a, 4c, the master breaker Only the feed bar 4b on the neutral side connected to the output terminal 6 at the center of 1 can be touched, and it is difficult to receive an electric shock, so that safety can be achieved.

Further, the insulating portion 45 is connected to the voltage side feed bar 4a,
Since the feed bar 4b on the neutral side is deformed to the feed bars 4a, 4c on the voltage side because the feed bar 4b on the neutral side is deformed to the feed bars 4a and 4c on the voltage side, the feed bar 4b on the neutral side hits the insulating portion 45, so It becomes difficult to contact the feed bars 4a and 4c, and the risk of short circuit is reduced. A second embodiment of the present invention is shown in FIG. That is, in this distribution board, the insulating portion 45 is in contact with the middle portion of the feeding bar 4b on the center side in the first embodiment.

According to this embodiment, the feed bar 4b on the neutral side is less likely to be deformed to the feed bars 4a, 4c on the voltage side. Others are the same as those in the first embodiment.

[0027]

According to the distribution board of claim 1, the plane of the intermediate portion of the feed bar on the voltage side is perpendicular to the bottom of the box,
Since the plane of the middle part of the feed bar on the neutral side is parallel to the bottom of the box body and is arranged farther from the bottom than the feed bar on the voltage side, the insulation distance between the middle parts of the feed bar is smaller than in the conventional case. There is an effect that it can be widely used, the box can be downsized, and an extra member such as an insulating cover is unnecessary.

According to the distribution board of a second aspect, in the first aspect, the box portion is provided with an insulating portion for partitioning an intermediate portion of the voltage side feed bar and an intermediate portion of the neutral side feed bar. In addition to the effects of the first aspect, the insulation between the feed bars can be ensured by the insulating portion. According to the distribution board of claim 3, in claim 1 or claim 2, the intermediate part of the feed bar on the voltage side is covered with the intermediate part of the feed bar on the neutral side. In addition to the effect of claim 2, even if an operator tries to touch the middle portion of the feed bar, only the neutral feed bar connected to the output terminal at the center of the main breaker can be touched, and it is difficult to receive an electric shock. You can be safe.

According to the distribution board of claim 4, in the claim 3, the insulating portion is made higher than the height of the intermediate portion of the feed bar on the voltage side. Therefore, in addition to the effect of claim 3, the neutral side is provided. Even if the feed bar is deformed to the voltage side feed bar side, the neutral side feed bar hits the insulating portion, so that it is difficult to contact the voltage side feed bar and the possibility of short circuit is reduced. Claim 5
According to the distribution board of claim 3, in the third aspect, the insulating portion is in contact with the center side feed bar. Therefore, in addition to the effect of the third aspect, the neutral side feed bar is disposed on the voltage side feed bar side. It becomes difficult to deform.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a first embodiment of the present invention. It is the fragmentary sectional view which looked at a branch breaker from the right side.

FIG. 2 is a partial cross-sectional view of a branch breaker as viewed from the right side.

FIG. 3 is a partial plan view of a distribution board.

FIG. 4 is a plan view with a cover removed.

FIG. 5 is a perspective view of the mounting plate viewed from the back side.

FIG. 6 is a partial cross-sectional view of a branch breaker of a distribution board as viewed from the left side.

FIG. 7 is a partially enlarged view of FIG.

FIG. 8 is a horizontal sectional view of a distribution board.

FIG. 9 is a cutaway perspective view of a bar.

FIG. 10 is a partial plan view thereof.

FIG. 11 is a plan view of a box body.

FIG. 12 is a perspective view with a cover removed.

FIG. 13 is a perspective view with a cover closed.

FIG. 14 is a partial cross-sectional view showing an insulating portion of the second embodiment.

FIG. 15 is an explanatory diagram showing a conventional feed bar.

[Explanation of symbols]

 1 Main Breaker 2a to 2c Main Bar 3 Branch Breaker 4a to 4c Feed Bar 5 Input Terminal 6 Output Terminal 7 Bottom 8 Box 23 Output Terminal 45 Insulation Part

Claims (5)

[Claims] 1. A box and a three-pole input / output terminal at both ends are attached to the bottom of the box, the central input terminal is connected to the neutral wire of the electric line, and the input terminals on both sides are the electric line of the electric line. A main breaker connected to the voltage line, and a plurality of branch breakers attached to the bottom of the box side by side with the main breaker,
Three main bars connected to the input terminals of the branch breakers, which are arranged at the bottom of the box body along the arrangement direction of the branch breakers, connect the output terminals of the main breaker and the main bar. A feed bar, of the feed bar, the voltage side feed bar connected to the output terminals on both sides of the main breaker, the plane of the middle portion is perpendicular to the bottom of the box body, The neutral side feed bar connected to the central output terminal is characterized in that the plane of the middle part thereof is parallel to the bottom of the box and is arranged farther from the bottom than the voltage side feed bar. A distribution board that does. 2. The distribution board according to claim 1, wherein the box body is provided with an insulating portion for partitioning an intermediate portion of the voltage side feed bar and an intermediate portion of the neutral side feed bar. 3. The distribution board according to claim 1, wherein an upper portion of an intermediate portion of the voltage side feed bar is covered with an intermediate portion of the neutral side feed bar. 4. The distribution board according to claim 3, wherein the insulating portion is higher than a height of an intermediate portion of the voltage side feed bar. 5. The distribution board according to claim 3, wherein the insulating portion is in contact with the center-side feed bar.