JP2011223812A - Wire support structure for distribution board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire support structure for a distribution board in which, even when an opening which is opened to a top plate terminal of a cabinet so as to insert a wire without bending it is formed in an upper part of the cabinet, deformation of the cabinet can be suppressed and wires can be bundled and fixed at appropriate parts without providing any support metal fitting inside the cabinet.SOLUTION: Rod-shaped wire guide metal fittings 3 with which slits 11 are provided at appropriate parts are erected and disposed at right and left side parts inside a distribution board 1, upper parts of the wire guide metal fittings 3 are protruded from an opening 20 formed on a top plate 2a of a cabinet 2, and wires 4 sent from the distribution board 1 are sent out while being supported and fixed to the wire guide metal fittings 3. Inside the cabinet 2, the wire guide metal fittings 3 are arranged vertically, concatenated and mounted to a back plate of the cabinet 2.

Description

  The present invention relates to an electric distribution board support structure for a distribution board that supports electric wires sent in and from the distribution board.

The distribution board is usually installed on the wall surface, and the electric wires sent from the distribution board are mainly arranged toward the ceiling. And then, laid toward each electrical equipment and power supply device, the conventional electric wires arranged in this way are provided with an opening in the top panel of the distribution board cabinet, and arranged from the opening toward the ceiling It was done. At this time, an electric wire fixing member such as a space duct is installed in the space between the distribution board and the ceiling in order to bind and support the arranged electric wires (for example, see Patent Document 1). FIG. 8 shows an example of this, and shows a configuration in which a box-shaped space duct 32 for supporting an electric wire is connected to a top plate of a distribution board 31 provided with an opening 30 for inserting an electric wire on the top plate of the cabinet. ing.
Moreover, the electric wires in the distribution board were fixed by arranging support fittings at appropriate locations and binding and fixing the electric wires (for example, see Patent Document 2).

JP 2000-50456 A Japanese Utility Model Publication No. 7-42984

However, since the top plate of the cabinet is also a structural material of the cabinet, there is a problem that if the opening is formed large, the strength of the cabinet is reduced and deformation occurs, making it difficult to close the distribution board door. For this reason, the opening portion is formed small leaving the peripheral portion, and when the electric wire is inserted into the opening portion, the electric wire has to be bent in and out according to the width of the remaining peripheral portion.
Also, in the cabinet, the wires were bound and fixed using the support brackets installed in advance, so the place to fix was limited, and when the wire support brackets are arranged at the inner bottom of the cabinet, Fixing work was troublesome, and as the number of wires increased, it was more difficult to fix the bundles.

  Therefore, in view of such problems, the present invention can suppress the deformation of the cabinet even if an opening that opens to the top plate end of the cabinet is formed at the top of the cabinet so that the wire can be inserted without bending. It is another object of the present invention to provide a distribution board electric wire support structure capable of performing bundling and fixing of electric wires at appropriate locations without providing support metal fittings in the cabinet.

In order to solve the above-mentioned problem, the electric wire support structure for the distribution board according to the invention of claim 1 is provided with a rod-shaped electric wire guide fitting provided with electric wire support portions at appropriate positions on the left and right side portions in the distribution board. Each of them is arranged upright, and the upper part of the wire guide fitting protrudes from the opening formed in the top panel of the distribution board cabinet, and the wire sent from the distribution board is supported and fixed to the wire guide fitting and sent out. It is characterized by.
According to this configuration, the electric wire guide fitting can support the electric wire in the distribution board and the electric wire sent out from the distribution board at an appropriate place, and a member for supporting the electric wire is separately provided in the distribution board. There is no need to provide it, and a support member such as a space duct for supporting the exposed electric wire is not necessary. And an electric wire can be arrange | positioned in a straight line from the inside of a distribution board to the exterior of a distribution board by arranging an electric wire along an electric wire guide metal fitting, and an electric wire can be arrange | positioned smoothly.

According to a second aspect of the present invention, in the configuration according to the first aspect, the wire guide fitting is longer than the height of the cabinet, and is arranged over the entire upper and lower regions in the cabinet, and is connected and fixed to the back plate of the cabinet. It is characterized by that.
According to this configuration, the electric wire can be supported and fixed at the left and right sides at any part in the cabinet. And since an electric wire guide metal fitting is connected with the backplate of a cabinet, even if an opening part is expanded to a top-plate edge part, it becomes possible to prevent a deformation | transformation of a cabinet without applying a stress to a top plate.

According to a third aspect of the present invention, in the configuration according to the first or second aspect, the wire guide fitting is a frame having a substantially U-shaped cross-section with one side opened, and the wire guide fittings arranged on the left and right are These are characterized in that they are installed with their open surfaces facing each other.
According to this configuration, since the open surface of the wire guide fitting faces inward, it is possible to maintain both the strength of the wire guide fitting and the ease of supporting the wire. Moreover, since the electric wire supported by the electric wire guide metal fitting is difficult to see from the front and the side, it is preferable from the viewpoint of beauty.

According to a fourth aspect of the present invention, in the configuration according to any one of the first to third aspects, the electric wire support portion provided in the electric wire guide fitting is a plurality of through holes formed in pairs.
According to this configuration, the electric wire can be bound and fixed by inserting a binding member such as an insulation lock through the pair of through holes, and the electric wire can be smoothly fixed and fixed.

According to the present invention, since it is possible to support the wires in the distribution board and the wires sent from the distribution board, there is no need to separately provide a member for supporting the wires in the distribution board, and the wires are exposed. For example, a support member such as a space duct for supporting the electric wire is not necessary. And an electric wire can be arrange | positioned in a straight line from the inside of a distribution board to the exterior of a distribution board by arranging an electric wire along an electric wire guide metal fitting, and an electric wire can be arrange | positioned smoothly.
Further, since the wire guide fitting is connected to the back plate of the cabinet, no stress is applied to the top plate, and it is possible to prevent the cabinet from being deformed even if the opening is enlarged to the top plate end.

It is a perspective explanatory view of a distribution board which shows an example of an electric wire support structure of a distribution board concerning the present invention. It is a right view of FIG. (A) is a top view of FIG. 1, (b) is the A section enlarged view. An electric wire guide metal fitting is shown, (a) is a perspective view and (b) is a top view. It is explanatory drawing which shows a mode that a cover frame is mounted | worn on the electricity distribution panel upper part. It is an isometric view explanatory drawing of the distribution board which provided the reinforcement board between the electric wire guide metal fittings. The other shape of an electric wire guide metal fitting is shown, (a), (b) is a perspective view, (c) is a top view. The electric wire support structure of the conventional distribution board is shown, and a mode that the space duct is installed on the distribution board is shown.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described in detail with reference to the drawings. 1 to 3 show an example of an electric wire support structure for a distribution board according to the present invention, FIG. 1 is a perspective explanatory view of the distribution board, FIG. 2 is a right side view of the distribution board in FIG. It is a top view of the electricity distribution panel of FIG. In each figure, 1 is a distribution board, 2 is a cabinet constituting the box of distribution board 1, 3 is a wire guide fitting, 4 is an electric wire, and distribution board 1 is in cabinet 2, main breaker 5 and branch The breaker 6 is stored and used. Each figure shows a state in which the door plate that closes the front surface of the cabinet 2 is removed.

  The wire guide fitting 3 is configured as shown in FIG. 4 (a) is a perspective view, FIG. 4 (b) is a plan view, and as shown in FIG. 4, the wire guide fitting 3 is a rod-like body formed by bending a steel plate into a substantially U-shape, It has a side plate 3a arranged toward the side of the distribution board 1, a front plate 3b arranged towards the front, and a back plate 3c arranged towards the rear, and one side is opened. Is formed.

A plurality of slit holes 11 that are long in the front-rear direction are formed in the side plate 3a, and screw holes 12 that are used for attaching a cover frame, which will be described later, are provided in the front plate 3b. Further, the back plate 3c is provided with bolt insertion holes 13 at appropriate locations for bolting to the cabinet 2 and bolting the exposed upper part to the wall surface. Two slit holes 11 are formed at predetermined intervals so as to form a pair, and a plurality of slit holes 11 are provided above and below the side plate 3a.
Further, when the wire guide fitting 3 is assembled to the cabinet 2, a stepped portion 14 is formed on the side plate 3 a so that the slit hole 11 forming surface does not come into contact with the side surface of the cabinet 2 and it is difficult to bind the wires 4. Has been.

  The wire guide fitting 3 configured in this way is attached to the cabinet 2 to support the wire 4 as shown in FIG. This will be specifically described below. First, the rectangular opening 20 for inserting the wire guide fitting 3 into the top plate 2a of the cabinet 2 is formed. The opening part 20 is opened to the edge part of the top plate 2a on either side of the top plate 2a without leaving an edge. In forming the opening 20, it is preferable that a slit is formed in accordance with the outline of the opening 20 when the cabinet 2 is manufactured, and the opening 20 can be easily formed by punching.

  Next, the wire guide fitting 3 is inserted into the formed opening 20. The wire guide fitting 3 is inserted from above and inserted until the lower end of the wire guide fitting 3 contacts the bottom of the cabinet 2 or near the bottom. The wire guide fitting 3 is formed to be sufficiently longer than the height of the cabinet 2 and is arranged so that one opened side surface faces inward. The wire guide fittings 3 and 3 used on the left and right are of the same shape, and one of them is inverted and used.

  The inserted wire guide fitting 3 is fixed to the cabinet 2 at least at two locations, upper and lower. Specifically, in the cabinet 2, as shown in FIG. 1, a wood plate mounting bracket 21 for mounting a breaker or the like is mounted on the inner bottom portion which is the back plate of the cabinet 2. As shown in the enlarged view of part A in FIG. 5B, a bolt 22 protruding forward is assembled, the back plate 3c is fixed by the bolt 22 and the nut 23, and the wire guide fitting 3 is attached.

As a result, as shown in FIG. 1, an electric wire support structure is formed from the inside of the distribution board 1 to the upper outside, and the electric wires 4 connected to the electric devices in the distribution board 1 are bound and fixed to the electric wire guide fitting 3. . Specifically, the electric wires 4a connected to the main breaker 5 and the electric wires 4b of the individual branch breakers 6 are arranged in the lateral direction toward the right or left closer wire guide fitting 3, and then supported by the electric wire guide fitting 3. And pulled upwards.
In the meantime, a binding member such as an insulok is inserted into a pair of slit holes 11 provided in the side plate 3a of the wire guide fitting 3, and appropriate portions of the wire 4 are bound and fixed. At this time, if the wire guide fitting 3 exposed upward is set to a length that reaches the ceiling, the wire 4 can be satisfactorily supported in a straight line up to the ceiling. FIG. 3 shows a state in which the electric wire 4 is bound and fixed to the electric wire guide fitting 3 by the binding member 18.

In this way, the wire guide fitting 3 can support the wires 4 inside the distribution board 1 and the wires sent from the distribution board 1 at appropriate places, and support the wires in the distribution board. There is no need to separately provide a member, and a support member such as a space duct for supporting the exposed electric wire 4 is not necessary. And by making the electric wire 4 run along the electric wire guide fitting 3, the electric wire can be arranged in a straight line from the distribution board to the outside of the distribution board, and the electric wire 4 can be arranged smoothly.
Moreover, since the electric wire guide metal fitting 3 is arrange | positioned up and down in the cabinet 2, the electric wire 4 can be supported and fixed by the left-right side part in any site | part. Since the wire guide fitting 3 is connected to the back plate of the cabinet 2, no stress is applied to the top plate 2a, and deformation of the cabinet 2 is prevented even if the opening 20 is expanded to the end of the top plate 2a. It becomes possible.
Furthermore, since the wire guide fitting 3 is formed in a substantially U-shaped cross section and the opened side faces inward, the strength maintenance of the wire guide fitting 3 and the ease of supporting the wire can be made compatible, Since the electric wire 4 supported by the electric wire guide metal fitting 3 is difficult to see from the front and the side, it is preferable from an aesthetic point of view.
In addition, the electric wire 4 can be bound and fixed by inserting the binding member 18 such as an insulation lock through the pair of through holes, and the electric wire 4 can be fixed and fixed smoothly.

  FIG. 5 shows a configuration in which the cover frame 8 is attached to the exposed portion of the wire support structure having the above-described configuration to cover the exposed wire guide fitting 3. The cover frame 8 has a front surface and left and right side surfaces, is formed in a U shape, and is formed with a size that matches the width of the cabinet 2 and the depth of the wire guide fitting 3. The cover frame 8 is pressed from the front against a pair of exposed wire guide fittings 3, 3 above the distribution board 1 and corresponds to the screw holes 12 provided in the front plate 3 b of the wire guide fitting 3. It fixes by screwing through the hole 8a provided in this way. As a result, the wire guide metal fitting 3 exposed above the distribution board 1 is covered with the cover frame 8 and can be made into a form that is aesthetically preferable.

  FIG. 6 shows a configuration in which a reinforcing plate 9 is passed between the left and right wire guide fittings 3 and 3. The left and right ends of the reinforcing plate 9 are bolted to bolt insertion holes 13 formed in the back plate 3 c of the wire guide fitting 3 and connected to the left and right wire guide fittings 3. Further, the reinforcing plate 9 is formed with a rectangular hole 9a in an appropriate portion so that the electric wire 4 can be bound and fixed through an insulation lock or the like. By providing the reinforcing plate 9 in this manner, it is possible to reinforce the exposed portion of the three wire guide metal tools, and even when the exposed portion is long, the occurrence of distortion or the like can be prevented. Moreover, the electric wire 4 can be fixed to the reinforcing plate 9 and the degree of freedom of the electric wire fixing portion is increased.

Further, FIG. 7 shows another shape of the wire guide fitting 3, wherein (a) and (b) are perspective views seen from different directions, and (c) is a plan view. In FIG. 7, a plurality of long holes 11 a which are long in the front and rear are provided at the same interval without forming a pair of holes for inserting the binding member 8 in pairs. And the string-like cut-and-raised piece 25 is spanned in the front-rear direction at the center of each long hole 11a, and the side plate 3a is formed flat without providing the step 14 shown in FIG.
The cut-and-raised piece 25 is formed by being retracted in one step with respect to the side plate 3a, and a vertical gap S is formed between the side plate 3a and the cut-and-raised piece 25.
By providing the string-like cut-and-raised piece in this way, the binding member such as the insulation lock can fix the electric wire simply by inserting it into the gap S, and the binding fixing operation becomes easy.

  In the above embodiment, when the wire guide fitting 3 is fixed, the back plate 3 c is fixed to the bolt 22 provided on the board mounting bracket 21 using the nut 23, but the side plate 3 a is attached to the side surface of the cabinet 2. It may be fixed by screwing.

  1 .... distribution panel, 2..cabinet, 2a ... top plate, 3 .... wire guide bracket, 4 .... electric wire, 8 .... cover frame, 9 .... reinforcement frame, 11 .... slit hole (through hole) ), 11a... Long hole (through hole) 18..

Claims (4)

On the left and right sides of the distribution board, rod-shaped electric wire guide fittings with electric wire support portions provided at appropriate locations are arranged upright, and the electric wire guide fittings are opened from the openings formed in the top panel of the distribution board cabinet. Protruding the top,
An electric wire support structure for a distribution board, wherein the electric wire sent from the distribution board is supported and fixed to the electric wire guide fitting. The electric wire of the distribution board according to claim 1, wherein the electric wire guide fitting is longer than the height of the cabinet, is arranged over the entire upper and lower regions in the cabinet, and is connected and fixed to a back plate of the cabinet. Support structure. The wire guide fitting is a frame having a substantially U-shaped cross-section with one open side, and the wire guide fittings arranged on the left and right are installed with their open surfaces facing each other. Item 3. A distribution board electric wire support structure according to item 1 or 2. The electric wire support structure for a distribution board according to any one of claims 1 to 3, wherein the electric wire support portion provided in the electric wire guide fitting is a plurality of through holes formed in pairs.

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