JP2011188693A - Airtight structure of distribution board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an airtight structure of a distribution board wherein such a situation that there is a cross beam in the wall surface to which a distributed board is attached and thereby the opening height dimension of a wiring hole must be smaller than a predetermined dimension can be coped with one type of separator. <P>SOLUTION: A wiring hole 11 formed in the wall surface 10 is closed airtightly by means of an airtight member 13 and a separator 17. The airtight member 13 holds a wire 6 by an airtight member 14 and fixes a frame 15 to the wiring hole 11, and the separator 17 is formed substantially in the shape of a plate and fixed to close between the airtight members 13 attached above and below the wiring hole 11. The separator 17 is provided with two parallel slit grooves 17d in the horizontal direction, and when a cross beam 18 is provided in the wall 10 at the position where the airtight member 13 is attached and thereby the wiring hole 11 must be formed with a small height dimension, the height dimension is reduced by breaking the separator 17 by the slit grooves 17d and then removing the intermediate part so that the airtight member 13 and the separator 17 can be attached. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an airtight structure when a distribution board is attached to a wall surface of a house.

  In recent years, houses have been required to have high heat-tightness due to their heat insulation performance, and the air-tightness measures are required for the distribution boards attached to the walls. In view of this, the present applicant has proposed an airtight structure in which a wire inserted through a wiring hole on a wall surface is sandwiched by an airtight member and the airtight member is fitted into the wiring hole and closed. The airtight member is formed by providing an airtight material inside the frame that is divided and formed to hold the electric wire. The frame is stretched around the entire edge of the frame on the front side of the frame. It consists of the heel part.

  However, in the structure of Patent Document 1, since the wiring hole on the wall surface is opened according to the airtight member, there is a problem that the wiring hole becomes small and wiring is difficult. Therefore, in order to solve the problem, the present applicant has proposed a structure in Patent Document 2 in which a wiring hole on the wall surface is greatly opened to facilitate wiring and the wiring hole is closed with an airtight member and a separator. In the distribution board used for this, an opening is formed in almost the entire back surface of the base, and the wiring hole for wiring to the branch breaker has a size that matches the installation space and wiring space of the branch breaker. It is formed. And an airtight member is provided in the up-and-down position of a wiring hole according to the wiring space of the branch breaker arrange | positioned at 2 steps | paragraphs, and a separator is provided so that an airtight member may be plugged up. Depending on the type of distribution board, branching breakers are provided in the horizontal direction, so the horizontal dimensions are different, but the height dimensions are constant, and the height dimensions of the wiring holes do not change. The dimensions were decided.

Japanese Patent Laying-Open No. 2007-336686 (FIG. 3) Japanese Patent Laying-Open No. 2010-22172 (FIG. 7)

  However, depending on the housing structure of the house, when installing the distribution board, there are cases where a horizontal column is provided in the wall surface so as to overlap the position of the wiring space of the branch breaker. Although the hole must be opened with a small height, there is a problem in that the separator cannot be attached because the separator is formed with a predetermined height. In order to cope with this, there is a problem that a separator having a small height has to be manufactured, the cost increases, inventory management becomes complicated, and a sudden response on site is not possible.

  According to the first aspect of the present invention, the wiring hole is formed in the wall surface for connecting the electric wire to the breaker housed in the distribution board, and the electric wire inserted through the wiring hole is sandwiched by the airtight member to form the wiring hole. An airtight structure of a distribution board that is closed together with a substantially plate-like separator is characterized in that the height of the separator can be reduced.

  According to the invention described in claim 2, in the airtight structure of the distribution board according to claim 1, the separator is provided with a slit groove.

  According to a third aspect of the present invention, in the airtight structure of the distribution board according to the first aspect, two separators are overlapped and slidable by a slide mechanism.

  According to the first aspect of the present invention, a separator having a small height dimension is provided even when there is a horizontal column in the wall surface to which the distribution board is attached and the opening height dimension of the wiring hole must be smaller than a predetermined dimension. There is an effect that it can be handled by one type of separator without requiring it separately, reducing the cost, making inventory management not complicated, and enabling a quick response on site.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, since the separator is broken by the slit groove, it can be easily reduced and can be manufactured at a low cost with a simple structure.

  According to the invention of claim 3, in addition to the effect of the invention of claim 1, the height dimension of the separator can be reduced by a simple operation, and the height dimension of the separator according to the wiring hole. There is an effect that can be finely adjusted.

It is a front view of the state which showed the distribution board which concerns on this invention, and removed the front cover of the distribution board. It is a disassembled perspective view before attaching an airtight member and a separator to a wiring hole. It is a perspective view of the state where an airtight member was opened. It is a perspective view of the state where an airtight member was closed. It is a perspective view of a separator. It is a perspective view of the state where an airtight member and a separator were attached to a wiring hole. It is the front view of the state where the distribution space where the wiring space of a branch breaker overlaps with the horizontal pillar in a wall is shown, and the front cover of the distribution board was removed. It is a perspective view of the state which divided the separator with the slit groove and removed the middle part. FIG. 9 is a perspective view of a state in which the separator of FIG. 8 is butted with a slit groove. FIG. 10 is a perspective view of a state where the separator and the airtight member of FIG. 9 are attached to the wiring hole. It is a disassembled perspective view before attaching the separator and airtight member which concern on 2nd Example of this invention to a wiring hole. It is a back perspective view of the separator which concerns on 2nd Example of this invention. It is a back surface perspective view of the separator which made the height dimension small from the state of FIG.

  In order to perform wiring to the branch breaker of the distribution board, the wiring hole formed in the wall surface is closed with an airtight member and a separator to be airtight. The airtight member is configured by holding an airtight material in a frame body including a frame portion and a flange portion, and the frame body is fixed to the wiring hole by sandwiching the electric wire with the airtight material. The separator is formed in a substantially plate shape and is fixed so as to close between the airtight members attached to the upper and lower sides of the wiring hole. When the separator is provided with two straight slit grooves in parallel in the horizontal direction and a horizontal column is provided on the wall where the airtight member is originally attached, the height of the wiring hole must be reduced. Is divided by a slit groove to remove the intermediate portion, thereby reducing the height dimension so that the airtight member and the separator can be attached.

  A first embodiment of an airtight structure of a distribution board according to the present invention will be described with reference to the accompanying drawings of FIGS.

  In the distribution board 1, a front cover (not shown) and a base 2 constitute a substantially box-like case, and a main breaker 4 and a plurality of branch breakers 5 are attached to the base 2 having an open front. The base 2 has an opening 2a formed in substantially the entire back surface so that the electric wire 6 can be inserted therethrough. The base 2 is provided with a plurality of rails 7 in the vertical direction, a panel 8 is provided between the rails 7, and devices are mounted on the panel 8. The branch breakers 5 are provided in parallel in two upper and lower stages, and a wiring space is provided between the secondary side terminal of the branch breaker 5 and the upper and lower side surfaces of the base 2.

  A rectangular wiring hole 11 is formed in the wall surface 10 of the house to which the distribution board 1 is attached in order to wire the branch breaker 5, and the wiring hole 11 is large enough to match the installation space and the wiring space of the branch breaker 5. Formed. Two airtight members 13 and one separator 17 are attached in order to make the wiring hole 11 airtight with the electric wire 6 inserted.

  The airtight member 13 is composed of an airtight material 14 divided and formed by a soft material such as sponge in order to sandwich the electric wire 6, and a resin frame 15 that holds the airtight material 14, and the frame 15 has a substantially rectangular tube shape. Frame portion 15a and a flange portion 15b stretched around the entire edge of the front edge of the frame portion 15a. A packing (not shown) is attached to the back surface of the flange portion 15b so as to improve airtightness. The divided frame body 15 is provided with a hinge 15c at one end so as to be freely opened and closed, and at the other end, a locking projection 15d and a locking piece 15f formed with a hole 15e to be locked to the locking projection 15d. Is provided and can be engaged and disengaged. The frame 15 is provided with two fixing corners 15g for fixing, and a fixing piece 15h is screwed to the fixing screw 15g. The fixing piece 15h is housed in the frame portion 15a. When the fixing screw 15g is turned in the tightening direction, the fixing piece 15h protrudes outward from the frame portion 15a. When further tightened, the fixing piece 15h protrudes from the frame portion 15a. That is, it moves in a direction approaching the flange 15b. Thereby, the wall material 10 is pinched | interposed and fixed by the collar part 15b and the fixing piece 15f at the time of the attachment to the wall surface 10. As shown in FIG. Further, the fixing piece 15f moves in a direction away from the flange portion 15b by turning the fixing screw 15g in a loosening direction, and finally the fixing piece 15f can be removed by being housed in the frame portion 15a.

  The separator 17 has a substantially plate shape and is sized so as to block between the two airtight members 13 attached to the upper and lower positions of the wiring hole 11. 10 is formed with a flange portion 17b to be attached to 10. A packing (not shown) is attached to the back surface of the flange portion 17b so as to improve airtightness. In addition, a locking claw 17c is formed at the upper and lower positions of the left and right reinforcing ribs 17a of the separator 17, and the locking claw 17c can be locked to the wall member 10 when temporarily attached to the wiring hole 11. Yes. Further, the separator 17 has two linear slit grooves 17d formed in parallel in the horizontal direction, and the height dimension can be reduced by dividing the slit groove 17d and extracting the intermediate portion.

  To attach the airtight member 13 and the separator 17, first, the electric wire 6 connected to the branch breaker 5 is vertically distributed according to the branch breaker 5 to be connected. And after arrange | positioning the electric wire 6 to the open airtight member 13, the frame 15 is closed and the electric wire 6 is clamped and fixed. After that, the left and right flanges 17b of the separator 17 are brought into contact with the wiring holes 11 of the wall surface 10, the locking claws 17c are locked to the wall material 10, and the separator 17 is first attached. And the fixing screw 15g of the airtight member 13 is tightened and attached. As a result, the separator 17 is fixed so that both upper and lower ends are pressed by the flange portion 15b of the airtight member 13 and cannot be removed. When the attachment of the airtight member 13 and the separator 17 is completed, the base 2 of the distribution board 1 is attached to the wall surface 10, and wiring is performed to the branch breaker 5. After wiring, the front cover is attached to the base 2 of the distribution board 1.

  Further, when the horizontal column 18 is provided in the wall surface 10 so as to overlap the position of the wiring space of the branch breaker 5 when the distribution board 1 is attached to the wall surface 10 of the house, the wiring hole 11 overlaps with the horizontal column 18. The height is made small so that it does not become. Then, the height dimension of the separator 17 is reduced to correspond to the reduced wiring hole 11. In order to reduce the height dimension of the separator 17, first, the separator 17 is divided by the two slit grooves 17 d to remove the intermediate portion of the separator 17. And the separator 17 uses the upper and lower parts from which the intermediate part is removed, and attaches the slit grooves 17d of the upper and lower separators 17 in abutment. The attachment method is the above-described method, and finally, the butted portion of the slit groove 17d is closed with a tape to perform airtightness.

  In the present embodiment, the slit groove 17d of the separator 17 is two, but a plurality of slit grooves 17d may be used. The attachment of the separator 17 is not limited to a method in which the separator 17 is temporarily fixed to the wall material 10 with the locking claw 17c and is pressed and fixed with the airtight member 13; Absent.

  A second embodiment of the airtight structure of the distribution board according to the present invention will be described with reference to the accompanying drawings of FIGS. In addition, the same part as Example 1 attaches | subjects the same code | symbol, and abbreviate | omits description.

  This embodiment is different from the first embodiment in that the slit groove is not provided in the separator, and two substantially plate-like separators composed of the first separator and the second separator are overlapped and slidably connected by a slide mechanism. .

  The separator 27 has thin plate-like rail portions 27aa on both left and right ends of the first separator 27a, and a U-shaped rail portion 27ba is formed on the second separator 27b provided on the first separator 27a. The rail portion 27aa and the rail portion 27ba of the second separator 27b are fitted together so that both can be slid in the vertical direction. In addition, a plurality of concave portions 27ab are formed along the rail portion 27aa of the first separator 27a, and the height of the separator 27 is finely adjusted stepwise by engaging the convex portions 27bb formed on the second separator 27b. can do.

  Packing (not shown) is attached to the left and right ends of the back side of the first separator 27 a and the second separator 27 b, and the packing is attached to the wiring hole 11 so as to contact the wall surface 10. When the horizontal pillar 18 is provided in the wall surface 10 so as to overlap the position of the wiring space of the branch breaker 5 and the wiring hole 11 is formed small, the slide mechanism is adjusted and the height of the separator 27 is reduced. To do. An airtight member 13 in which the electric wire 6 is inserted and held is attached above and below the separator 27.

  There is no limitation on the slide mechanism of the separator, and the height of the separator may be adjusted steplessly.

6 Electric Wire 10 Wall 11 Wiring Hole 13 Airtight Member 17 Separator 17a Reinforcement Rib 17b Gutter 17c Locking Claw 17d Slit Groove 18 Horizontal Column

Claims (3)

  A wiring hole is formed in the wall surface to connect the electric wire to the breaker housed in the distribution board, and the electric wire inserted into the wiring hole is sandwiched by an airtight member, and the wiring hole is closed together with a substantially plate-like separator. In the airtight structure of the distribution board, the separator can be reduced in height.   The airtight structure of the distribution board according to claim 1, wherein the separator is provided with a slit groove.   2. The airtight structure of a distribution board according to claim 1, wherein two separators are overlapped to be slidable by a slide mechanism.

Images