JP7628366B2 - Distribution boards and covering materials - Google Patents

Description

The present invention relates to a distribution board and a covering member.

As described in Patent Document 1, a distribution board is known that has a wiring port on the rear side for pulling in wiring. Such a distribution board is used by connecting cables pulled out from behind the wall through holes provided in the installation surface such as a wall to the distribution equipment inside the distribution board. For this reason, these distribution boards are equipped with wiring ports that extend over almost the entire rear surface of the body member that is fixed to the installation surface such as a wall.

In recent years, the spread of electrical equipment has led to more opportunities to use electricity than ever before. This has resulted in demands such as changing the trunk capacity, increasing the number of branch circuits, and adding functions for solar power generation and EVs and PHEVs. In addition, because panels such as switchboards and distribution boards deteriorate due to the effects of the external environment after many years of use, it is recommended that panels that have been used for a certain period of time be replaced.

JP 2018-107997 A

On the other hand, new distribution boards are often smaller than conventional ones with the same performance. This is because the equipment installed inside them is often smaller. However, the wall where the existing distribution board was installed still has holes for pulling out the cables from behind the wall, and if a new, smaller distribution board is installed in the same position, there is a risk that these holes and the mounting holes where the existing distribution board was installed will become exposed.

To solve this problem, it is possible to install a replacement distribution board that is the same size as the existing one or larger. In this way, the hole in the wall will be covered by the replacement distribution board. However, the distribution board has a wiring port that spans almost the entire back surface of the body member. Because there are few obstacles in front of this wiring port, there is a risk that foreign objects such as dust and pests will get into the distribution board through holes in the installation surface such as the wall. It also does not look very good.

The inventor of this case has thoroughly investigated this issue and attempted to solve it. The problem that this invention aims to solve is to make it possible to partially block the wiring port of a distribution board.

To solve the above problem, a distribution board is provided with a wiring port on the rear side for pulling in wiring, with multiple mounting holes on the periphery of the wiring port, and a covering member having a plate-shaped covering part that covers the portion of the wiring port that is located to the right or left of the power distribution device attached to the distribution board, from the top of the wiring port to the bottom of the wiring port.

It is also preferable that the left and right width of the covering member be an integer multiple of the left and right width of the branch breaker.

It is also preferable that the covering member be configured with a dividing section that can be used to separate the branch breaker at an integer multiple of the left and right width.

It is also preferable that the covering member has flexible mounting protrusions on both ends, and that the covering member is fixed by pushing the mounting protrusions into the mounting holes.

The covering member is attached to a distribution board that has a wiring port on the back side for pulling in wiring, and includes a plate-shaped covering portion that can cover the wiring port from the top to the bottom, and an attachment portion that is used to attach the covering member.

The present invention allows the wiring port of a distribution board to be partially blocked.

1 is a perspective view of a distribution board according to an embodiment, with a cover that is normally attached to a body member and forms the outer shape of the front side removed. FIG. 2 is a front view of the structure shown in FIG. 1 . FIG. FIG. 13 is a diagram showing an example of a power distribution device attached to a mounting base. 13 is a diagram showing an example in which a covering member is attached to the left side of a power distribution device. FIG. FIG. 2 is a perspective view of a covering member attached in the embodiment shown in FIG. 1 . 7 is a perspective view of the covering member shown in FIG. 6 as seen from the opposite side. FIG. 8 is a cross-sectional view showing an example in which the covering member shown in FIGS. 6 and 7 is attached. 13 is a diagram showing an example in which a covering member is also attached to the rear side of the power distribution device. FIG. FIG. 13 is a perspective view showing a modified example of the covering member. 11 is a perspective view of the covering member shown in FIG. 10 as viewed from the opposite side. FIG. 12 is a cross-sectional view showing an example in which the covering member shown in FIGS. 10 and 11 is attached. FIG. 2 is a perspective view showing an example of a covering member formed in a generally flat plate shape. 14 is a perspective view of the covering member shown in FIG. 13 as viewed from the opposite side. FIG. 15 is a cross-sectional view showing an example in which the covering member shown in FIGS. 13 and 14 is attached. 11 is a perspective view showing an example of a covering member having an attachment portion formed in the short side direction. FIG. 17 is a perspective view of the covering member shown in FIG. 16 as seen from the opposite side. FIG. 18 is a perspective view showing an example in which the covering member shown in FIGS. 16 and 17 is attached. This is a cross-sectional view taken along line XIX-XIX of Figure 18.

The following describes an embodiment of the invention. As can be seen from Figs. 1 to 4, the distribution board 1 of this embodiment has a wiring port 12 for pulling in wiring on the back side. This distribution board 1 has a plurality of mounting holes 13 on the periphery of the wiring port 12, and is equipped with a covering member 70 having a plate-shaped covering portion 71 that covers the portion of the wiring port 12 located to the right or left of the power distribution device 21 attached to the distribution board 1 from the upper part of the wiring port 12 to the lower part of the wiring port 12. This makes it possible to partially block the wiring port 12 of the distribution board 1.

Here, we will start by explaining the overview of the distribution board 1. The distribution board 1 has a body member 11 that is fixed to an installation surface such as a wall. As can be seen from FIG. 3, this body member 11 is provided with a wiring port 12 for pulling in wiring from the rear side of the distribution board 1. In addition, the periphery of this wiring port 12 is provided with multiple mounting holes 13.

The distribution board 1 is equipped with power distribution equipment 21 such as a main breaker 21a and a branch breaker 21b. In the embodiment, as can be seen from FIG. 4, a mounting base 22 on which the power distribution equipment 21 is attached is fixed to the body member 11, and the power distribution equipment 21 is mounted on the distribution board 1. Note that the power distribution equipment 21 may be fixed to the mounting base 22 fixed to the body member 11.

There are various methods for fixing the mounting base 22 to the body member 11, but in the example shown in Figures 1 and 2, the mounting rail 23 is fixed to the body member 11 using some of the multiple mounting holes 13 provided around the periphery of the wiring port 12, and the mounting base 22 is fixed to this mounting rail 23. In this example, the mounting base 22 is fixed so that it spans two mounting rails 23, but this is not a necessary configuration. For example, the mounting base 22 may be fixed to the body member 11 using the mounting holes 13 provided on the left and right ends of the wiring port 12 and the mounting holes 13 provided in the mounting rail 23.

When using a distribution board 1 that is large in the left-right direction, if the components required for fixing the power distribution equipment 21, such as the mounting base 22, are simply fixed to the body member 11, some of the wiring ports 12 located to the right or left of the mounting base 22 may appear large from the front side. In the present invention, a covering member 70 is used to cover such parts, that is, some of the wiring ports 12. In the example shown in FIG. 2, the covering member 70 is attached to the right side of the power distribution equipment 21, and in the example shown in FIG. 5, the covering member 70 is attached to the left side of the power distribution equipment 21.

The covering member 70 shown in Figures 6 and 7 has a plate-shaped covering portion 71 that can cover the wiring port 12 from the top to the bottom. The covering member 70 also has an attachment portion 72 that is used to attach the covering member 70 to a body member 11 or the like. More specifically, the mounting portions 72 are provided on both ends of a plate-shaped member that has the plate-shaped covering portion 71. The mounting portion 72 has a mounting surface 72a that can face the mounting hole 13. The mounting surface 72a also has a mounting protrusion 72b that can be inserted into the mounting hole 13.

In the example shown in Figures 6 and 7, the mounting portion 72 and the covering portion 71 can be positioned so that they are offset toward the rear, so the portion formed by the mounting portion 72, the covering portion 71, and the connection portion 73 connecting them is configured to have a hat shape in a side view. If the covering portion 71 is configured to be positioned toward the rear side of the mounting portion 72, a large space can be secured inside the distribution board 1.

In the example shown in Figures 6 and 7, in order to enable the covering portion 71 to be positioned on the rear side, the covering portion 71 is configured to be shifted relative to the mounting portion 72 toward the side where the mounting protrusion 72b extends from the mounting surface 72a.

In addition, in the embodiment, the covering member 70 is disposed adjacent to the mounting rail 23 having the cutout 23a on the rear side, but since the covering portion 71 is disposed on the rear side of the mounting portion 72, when wiring the power distribution devices 21 attached to the distribution board 1, the cable can be passed through the cutout 23a (see Figures 1 and 8). Therefore, it is possible to achieve a structure that makes it easy to wire inside the distribution board 1 while covering the unused parts of the wiring port 12.

Incidentally, the covering member 70 of the embodiment is made of a resin material. If the covering member 70 is made of a resin material, the mounting protrusion 72b can be made flexible, and the covering member 70 can be fixed simply by inserting the mounting protrusion 72b into the mounting hole 13. Note that the covering member 70 does not necessarily have to be made of a resin material, and may be made of a metal, for example.

The covering member 70 of the embodiment can be easily attached by pushing the mounting protrusions 72b of the covering member 70 into the mounting holes 13 provided around the wiring port 12 of the body member 11, whereby the mounting protrusions 72b deform and fit into the mounting holes 13. It can also be easily removed. Note that such mounting protrusions 72b are not essential. The covering member 70 may be fixed to the body member 11, etc., using screws, bushing material, etc.

The width of the covering member 70 is preferably an integer multiple of the width of the branch breaker 21b. The spacing between the mounting holes 13 located on the periphery of the wiring port 12 is the same as the width of the branch breaker 21b. For this reason, when mounting the mounting rail 23, etc., the mounting rail 23 can be selected to be mounted offset by an integer multiple of the width of the branch breaker 21b. This offset corresponds to the offset in the left-right direction (or up-down direction in some cases) of the opening to be blocked. Therefore, if the width of the covering member 70 is formed to be an integer multiple of the width of the branch breaker 21b, it is possible to cover most of the desired area by using one or more covering members 70.

The example covering member 70 shown in Figures 6 and 7 is made by arranging two covering members each having a width equivalent to two circuits of branch breaker 21b, i.e., the covering member 70 has a width four times the width of branch breaker 21b.

The covering member 70 of the embodiment is structured with a dividing portion 75 that can be used to separate the branch breaker 21b at an integer multiple of its left-right width. In the example shown in Figures 6 and 7, one covering member 70 is formed with a width equivalent to four circuits of the branch breaker 21b, and the covering member 70 is easily separated in half (i.e., the width equivalent to two circuits of the branch breaker 21b).

In the example shown in Figures 6 and 7, a slit is made at the location where it can be separated to become the dividing section 75. If a guide such as a slit is made in the covering member 70, it can be separated without using scissors or tools, and the required width can be adjusted appropriately.

As can be seen from the example shown in FIG. 9, the covering member 70 can be used not only to cover the wiring ports 12 located to the right or left of the power distribution equipment 21 attached to the distribution board 1, but also to cover the wiring ports 12 on the rear side of the installation position of the power distribution equipment 21.

Some distribution boards 1 have mounting holes 13 with different mounting positions in the front-to-rear direction. In this case, the mounting holes 13 located at the front can be used to secure the mounting base 22 to which the power distribution equipment 21 is fixed, and the mounting holes 13 located at the rear can be used to attach the covering member 70. In this way, the wiring port 12 can be covered by the covering member 70 on the back side of the mounting base 22.

It is preferable that the covering member 70 be capable of being partially machined to have cut portions 74, such as slits or holes. For example, if the cut portions 74 can be provided in the covering member 70 using scissors or a tool, when the amount of wiring to be pulled into the power distribution device 21 is small, the wiring can be passed through the cut portions 74 provided in part of the covering member 70, making it easier to perform wiring work while increasing the covered area. This can also improve the airtightness of the distribution board 1.

Incidentally, the covering member 70 can have various configurations other than those shown in Figures 6 and 7, and examples of these are described below. The example shown in Figures 10 and 11 is a configuration in which the covering portion 71 of the covering member 70 can be positioned forward of the mounting portion 72. With such a configuration, it is possible to position the covering portion 71 forward of the cutout portion 23a of the mounting rail 23, thereby further improving airtightness (see Figure 12).

In the example shown in Figures 10 and 11, the covering portion 71 of the covering member 70 can be positioned forward of the mounting portion 72, so the covering portion 71 is configured to be shifted relative to the mounting portion 72 on the side opposite to the side where the mounting protrusion 72b extends from the mounting surface 72a.

Also, as shown in Figs. 13 and 14, the covering portion 71 and the attachment portion 72 may be configured to be located on the same plane. In the example shown in Figs. 13 and 14, both ends of the flat portion are the attachment portion 72, and the center of the flat portion is the covering portion 71. With such a simple configuration, it is not bulky and is convenient for carrying multiple covering members 70. When the covering member 70 of this example is attached, it becomes as shown in Fig. 15.

In addition, in the examples so far, the mounting portion 72 has been provided at the longitudinal end of the covering member 70, but the mounting portion 72 may be formed at the lateral end of the covering member 70 (see Figures 16 and 17). In this case, the mounting protrusions 72b formed on the mounting portion 72 may be attached to the left and right sides of the wiring port 12 or to the mounting holes 13 provided in the mounting rail 23 (see Figures 18 and 19). Also, a configuration in which the mounting portion 72 is provided at both the longitudinal end and the lateral end may be used.

The present invention has been described above using the embodiments as examples, but the present invention is not limited to the above embodiments and can be in various forms. For example, the covering portion 71 of the covering member 70 does not necessarily have to be rectangular in front view, and it is sufficient that it covers the upper part of the wiring port 12 and the lower part of the wiring port 12, and it can also be a different shape.

Reference Signs List 1: Distribution board 12: Wiring port 13: Mounting hole 21: Power distribution device 21b: Branch breaker 70: Covering member 71: Covering portion 72: Mounting portion 72b: Mounting protrusion 75: Split portion

Claims (2)

A distribution board having a wiring port for drawing in wiring on the rear side,
A plurality of mounting holes are provided around the wiring port above and below the wiring port ,
A covering member having a plate-shaped covering portion that covers a portion of the wiring port located to the right or left of the power distribution device attached to the distribution board from an upper portion to a lower portion of the wiring port ,
A mounting rail is provided for supporting the power distribution device.
A distribution board in which the covering member that is not used to support power distribution equipment is attached using a mounting hole different from a mounting hole used to attach the mounting rail . A covering member that is attached to a distribution board having a wiring port on the rear side for drawing in wiring,
The wiring port is provided with a plate-shaped covering portion capable of covering the wiring port from the top to the bottom, and an attachment portion used to attach the covering member ,
A covering member that allows the plate-shaped covering portion to be positioned on the rear side of the distribution board relative to the mounting portion .

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