Cover and wiring instrument installation apparatus

Abstract

To provide a cover having a variable front-rear length of a peripheral wall portion and improved routing performance for wiring materials.SOLUTION: A cover is installed in a wall rear side or wall opening in a state where its front side faces a wall surface for a wall of a building. The cover comprises a peripheral wall portion which extends from a front end to a rear end, defines an internal space on the wall rear side and has an opening at the front end so that the internal space faces the wall surface, and an extension plate portion which extends outward from an outer circumferential surface of the peripheral wall portion at the front end side of the peripheral wall portion. The peripheral wall portion includes a non-deformable region that continuously extends from the front end and does not deform in the front-rear direction, and a deformable region that is disposed adjacent to the rear side of the non-deformable region and expands and contracts in the front-rear direction. In the non-deformable region, an introduction portion is formed for introducing a wiring material into the internal space.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cover to be installed in a wall hole drilled in a wall of a building, and a wiring device installation device including the cover. [Background technology]

[0002] Generally, when wiring devices such as outlets and switches are installed on the wall of a building, a wall hole is formed in the wall, the wiring device is placed through the wall so that it faces the wall surface, and wiring material wired in the space behind the wall is connected to the wiring device. In this installation structure, measures are required to completely seal the wall hole used to install the wiring device in order to prevent sound leakage into the room on the wall surface side through the wall hole and to prevent air currents such as cold air and warm air behind the wall, as well as dust and dirt, from entering the room on the wall surface side.

[0003] For example, Patent Document 1 discloses a dustproof gasket for a box that separates the interior of a box installed within a wall from the indoor side. In the following paragraphs, the reference numerals of Patent Document 1 are indicated in parentheses. The dustproof gasket (P1) is molded from a soft synthetic resin material such as soft PVC, or a rubber material made from synthetic or natural rubber. It consists of a box-shaped main body (1) with one open side and a fixed flange plate (2) extending outward from the entire periphery of the opening. The bottom wall (3) of the main body (1) of the dustproof gasket (P1) is integrally provided with multiple tubular wire insertion holes (4) through which electric wires can be inserted in an airtight manner. The peripheral wall (5) of the main body (1) is shaped like a bellows and is expandable and contractible. Therefore, the distance (L) between the fixed flange plate (2) and the bottom wall (3) of the dustproof gasket (P1), i.e., the depth of the main body (1), is variable. The fixing flange plate (2) is provided with a pair of fixing screw insertion holes (6). The electric wire insertion portion (4) protrudes from the inside of the bottom wall (3), and a thin plate (4a) for isolating the outside is integrally formed on the outer portion of the electric wire insertion portion (4). The thin plate (4a) is broken during use. An example of how the dustproof gasket (P1) is used is as follows: Outside a box (B1) installed behind a wall, a retaining plate (7) is placed between the fixing flange plate (2) of the dustproof gasket (P1) and the fixture mounting frame (11) to which the outlet (10) is attached. An electric wire (13) drawn out from an electric conduit (12) is inserted from the outside to the inside of the electric wire insertion portion (4) of the dustproof gasket (P1), and the tip of the electric wire (13) is connected to the wiring fixture, the outlet (10). Thereafter, when the outlet (10) connected to the electric wire (13) is inserted into the main body (1) of the dustproof packing (P1), if the thickness of the outlet (10) is smaller than the depth of the main body (1), the main body (1) remains in its original state, but if the thickness of the outlet (10) is greater than the depth of the main body (1), the main body (1) is extended by the minimum required length.When the main body (1) of the dustproof packing (P1) is inserted into the box (B1) and the outlet (10) is inserted into the main body (1) of the dustproof packing (P1), if the main body (1) of the dustproof packing (P1) remains in its original state, the peripheral wall (5) is appropriately compressed according to the amount of excess length of the electric wires (13) housed in the box (B1), the degree of bending, etc. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 7-274346 Summary of the Invention [Problem to be solved by the invention]

[0005] The cover (dustproof gasket) of Patent Document 1 has a peripheral wall of the cover body that is expandable, allowing the depth of the body to be adjusted in the front-to-rear direction of the wall hole. However, with this cover, the entire peripheral wall is bellows-shaped, so the wire insertion portion must be formed on one side of the bottom wall of the cover body, which presents a problem of limited flexibility in routing the wiring. In particular, behind a wall, where space is often narrow in the front-to-rear direction, when the wiring is introduced into the cover through the wire insertion portion on the bottom wall, the bending angle of the wiring becomes steep, making it difficult to route the wiring.

[0006] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a cover in which the front-to-rear length of the peripheral wall portion of the cover is variable and which improves the ease of handling of wiring material, and a wiring device installation device equipped with such a cover. [Means for solving the problem]

[0007] (Configuration 1) The cover of configuration 1 is a cover that is installed behind a wall or in a wall hole with the front facing the wall of a building, a peripheral wall portion extending from a front end to a rear end, defining an internal space behind the wall, and having an opening at the front end that exposes the internal space to the wall surface; an extension plate portion extending outward from the outer circumferential surface of the peripheral wall portion at a front end side of the peripheral wall portion, The peripheral wall portion is provided with a non-deformation area that extends continuously from the front end and does not deform in the front-to-back direction, and a deformation area that is arranged side by side to the rear of the non-deformation area and that expands and contracts in the front-to-back direction, and the non-deformation area is characterized in that an introduction portion is formed for introducing wiring material into the internal space.

[0008] (Configuration 2) The cover of configuration 2 is characterized in that, in the cover of configuration 1, the non-deformation region is provided with a plurality of reinforcing ribs extending in the front-to-rear direction, and the introduction portion is sandwiched between adjacent reinforcing ribs.

[0009] (Configuration 3) The cover of configuration 3 is the cover of configuration 1 or 2, characterized in that the deformation region has a bellows shape that is stretchable in the front-to-rear direction, and the natural length in the front-to-rear direction is greater than half the maximum stretched length.

[0010] (Configuration 4) The wiring device installation device of configuration 4 is a wiring device installation device for installing a wiring device in a wall hole drilled in a wall of a building, A cover of any of configurations 1 to 3; a wiring device fixing body that is installed in the wall hole and to which the wiring device is fixed, the cover further includes a bottom wall portion that closes a rear end of the peripheral wall portion, and the wiring apparatus fixture can be housed in the internal space through the opening, The deformation region has a bellows shape that can expand and contract back and forth, When the deformation region is at its natural length, the rear end of the wiring device fixing body housed in the internal space and the bottom wall portion are spaced apart in the front-to-rear direction, and the deformation region is capable of being shortened and deformed so as to move the bottom wall portion forward from its natural length.

[0011] (Configuration 5) The wiring device installation device of configuration 5 is a wiring device installation device for installing a wiring device in a wall hole drilled in a wall of a building, A cover of any of configurations 1 to 3; a wiring device fixing body that is installed in the wall hole and to which the wiring device is fixed, the cover further includes a bottom wall portion that closes a rear end surface of the peripheral wall portion, and the wiring apparatus fixture can be housed in the internal space through the opening, The wiring apparatus fixing body includes a side wall portion, a front opening portion that opens in front of the side wall portion, a wiring apparatus attachment portion for fixing the wiring apparatus through the front opening portion, and a through-hole portion that allows a wiring material to be inserted into and out of the side wall portion, The side wall portion of the wiring apparatus fixing body is accommodated in the internal space of the cover, and the introduction portion and the through-hole portion are at least partially connected inward and outward directions when the opening of the cover and the front opening of the wiring apparatus fixing body are arranged on the same plane.

[0012] (Configuration 6) A wiring apparatus installation device of configuration 6 is the wiring apparatus installation device of configuration 5, wherein the wiring apparatus fixture is composed of a deep fixture extending a first length in the front-rear direction and a shallow fixture extending a second length in the front-rear direction that is shorter than the first length, and either the deep fixture or the shallow fixture is selected for use; The deep-type fixed body and the shallow-type fixed body are characterized in that, when the opening and the front opening of the cover are arranged on the same plane, the introduction portion and the through-hole portion are configured to be at least partially connected in the inward and outward directions.

[0013] (Configuration 7) The wiring device installation device of configuration 7 is a wiring device installation device for installing a wiring device in a wall hole drilled in a wall of a building, A cover of any of configurations 1 to 3; a wiring device fixing body that is installed in the wall hole and to which the wiring device is fixed, The wiring apparatus fixing body includes a side wall portion, a front opening portion that opens in front of the side wall portion, and a through-hole portion that allows a wiring material to be inserted into and out of the side wall portion, The cover is configured so that, when the cover is disposed inside the side wall portion through the front opening, an extension plate portion of the cover abuts against a front surface of the wiring apparatus fixing body, The cover is characterized in that, when the cover is disposed inside the side wall portion, the introduction portion and the through-hole portion are at least partially inwardly and outwardly communicated with each other. [Effects of the Invention]

[0014] According to the cover of configuration 1, the peripheral wall portion of the cover is composed of a non-deformable region that extends continuously from the front end and does not deform in the front-to-rear direction, and a deformable region that is arranged behind the non-deformable region and expands and contracts in the front-to-rear direction. This allows the front-to-rear length of the peripheral wall portion to be adjusted depending on the size of the wiring device to be installed in the wall hole and the front-to-rear space of the space behind the wall. Furthermore, the non-deformable region of the peripheral wall portion is formed with an introduction portion for introducing wiring material into the interior space. By providing the introduction portion on the peripheral wall portion of the cover, when introducing wiring material from the external space behind the wall into the interior space of the peripheral wall portion, it is possible to utilize the relatively larger vertical and horizontal spaces (perpendicular to the front-to-rear direction) for routing the wiring material compared to the front-to-rear space behind the wall. This provides greater flexibility in routing the wiring material. Furthermore, because the position of the introduction portion is determined based on the extension plate portion, the introduction portion can be always positioned in a consistent position when the cover is installed in the wall hole, allowing for standardization of installation. Therefore, the cover of the present invention allows the front-to-rear length of the peripheral wall portion of the cover to be changed, and also makes it possible to improve the ease of handling of wiring materials.

[0015] According to the cover of configuration 2, in addition to the effects of the invention of configuration 1, multiple reinforcing ribs are formed to sandwich the introduction portion of the non-deformation area, so that when the wiring material is introduced into the internal space through the introduction portion, deformation of the non-deformation area of ​​the peripheral wall can be suppressed without hindering the deformation of the deformation area.

[0016] According to the cover of configuration 3, in addition to the effects of the invention of configuration 1 or 2, the natural length in the front-to-rear direction of the deformation region forming the bellows shape is greater than half the maximum extension length, so that an internal space having a predetermined front-to-rear depth is secured in the initial state, and the peripheral wall portion can be expanded and contracted front-to-rear as needed.

[0017] The wiring device installation device of configuration 4 can achieve the effects of any one of the inventions of configurations 1 to 3. Furthermore, when the accordion-shaped deformation region is at its natural length, the rear end of the wiring device fixture housed in the internal space and the bottom wall are spaced apart in the front-to-rear direction, and the deformation region can be shortened to move the bottom wall forward from its natural length. That is, even when the cover is in its initial state, the wiring device fixture can be accommodated with ample space in the internal space of the cover, providing ample space for accommodating excess wiring material introduced into the internal space. Furthermore, because the cover has a sufficient shortening capacity when the wiring device fixture is housed in the internal space of the cover, the cover can be shortened to a compact size depending on the front-to-rear width of the back of the wall. Therefore, the wiring device installation device of the present invention can improve the workability of installing wiring devices on a wall.

[0018] The wiring apparatus installation device of configuration 5 can achieve the effects of any one of the inventions of configurations 1 to 3. Furthermore, the side wall portion of the wiring apparatus fixture is accommodated in the internal space of the cover, and the introduction portion and the through-hole portion are at least partially inwardly and outwardly communicated with each other when the opening of the cover and the front opening of the wiring apparatus fixture are arranged on the same plane. This allows the wiring material to be arranged in a substantially linear manner so as to pass through the introduction portion and the through-hole portion, further improving the ease of handling the wiring material. Therefore, the wiring apparatus installation device of the present invention improves the ease of handling the wiring material and makes it possible to improve the workability of installing wiring apparatuses on walls.

[0019] According to the wiring device installation device of configuration 6, in addition to the effect of the invention of configuration 5, the user can select either a deep fixture or a thin fixture depending on the size of the space behind the wall and install the wiring device on the wall. Moreover, regardless of whether a deep fixture or a thin fixture is selected, the wiring material can be arranged in a substantially straight line so as to pass through the introduction portion and the through-hole portion, which can further improve the ease of handling of the wiring material.

[0020] The wiring apparatus installation device of configuration 7 can achieve the effects of any one of configurations 1 to 3. The cover is configured so that, when the cover is disposed inside the side wall through the front opening of the wiring apparatus fixture, the extension plate portion of the cover abuts against the front surface of the wiring apparatus fixture. When the cover is disposed inside the side wall, the introduction portion and the through-hole portion at least partially communicate inward and outward directions. This allows the wiring material to be arranged in a substantially linear manner so as to pass through the introduction portion and the through-hole portion, further improving the ease of handling the wiring material. Therefore, the wiring apparatus installation device of the present invention improves the ease of handling the wiring material and improves the workability of installing wiring apparatuses on walls. [Brief explanation of the drawings]

[0021] [Figure 1]1 is an exploded perspective view of a wiring apparatus installation device according to an embodiment (first embodiment) of the present invention. [Figure 2] 2 is a schematic perspective view of a wiring box (wiring apparatus fixing body) of the wiring apparatus installation device of FIG. 1. [Figure 3] FIG. 2 is a schematic perspective view of a cover of the wiring device installation device of FIG. 1. [Figure 4] (a) Front view and (b) rear view of the cover in Figure 3. [Figure 5] (a) Plan view and (b) side view of the cover of Figure 3. [Figure 6] 6 is a cross-sectional view of the cover shown in FIG. 5 along line AA. [Figure 7] BB cross section of the cover in Figure 5. [Figure 8] In the cover of FIG. 6, (a) shows the extended state from the natural length, and (b) shows the shortened state. [Figure 9] 1 is a perspective view of an installation structure using a wiring apparatus installation device according to one embodiment (first embodiment) of the present invention; [Figure 10] FIG. 10 is a front view of the wiring device installation device of FIG. 9. [Figure 11] 11 is a cross-sectional view of the wiring device installation structure shown in FIG. 10 . [Figure 12] 11 is a DD cross-sectional view of the wiring device installation structure of FIG. [Figure 13] 12 is a cross-sectional view showing another example (shallow fixed body) of the wiring device installation structure of FIG. 11. [Figure 14] 10 is a schematic diagram showing a method of constructing an installation structure using a wiring device installation device according to one embodiment of the present invention, illustrating the process of temporarily fixing the cover to the fixing surface of the pillar material and accommodating a wiring box in the internal space of the cover. FIG. [Figure 15] 10 is a schematic diagram showing a method of constructing an installation structure using a wiring device installation device according to one embodiment of the present invention, illustrating the process of fixing a wiring box housed in a temporarily fixed cover to a fixed surface of a pillar material. FIG. [Figure 16] FIG. 10 is an exploded perspective view of a wiring apparatus installation device according to another embodiment (second embodiment) of the present invention. [Figure 17] FIG. 17 is a schematic perspective view of a cover of the wiring apparatus installation device of FIG. 16. [Figure 18](a) Plan view and (b) side view of the cover of Figure 17. [Figure 19] FIG. 10 is a front view of a wiring apparatus installation structure using a wiring apparatus installation device according to another embodiment (second embodiment) of the present invention. [Figure 20] 20 is an E-E cross-sectional view of the wiring device installation structure of FIG. 19; DETAILED DESCRIPTION OF THE INVENTION

[0022] An embodiment of the present invention will be described below with reference to the drawings. Note that the shapes of the drawings referred to in the following description are conceptual or schematic diagrams for explaining preferred shapes and dimensions, and the dimensional ratios do not necessarily correspond to the actual dimensional ratios. In other words, the present invention is not limited to the dimensional ratios in the drawings.

[0023] [First embodiment] A cover 130 according to one embodiment of the present invention is used to seal the space between the wall surface and the space behind the wall when a wiring device 13 is installed in the wall 11 through a wall hole 12 formed in the wall 11, which constitutes a hollow wall. Preferably, the cover 130 functions to prevent airflows such as cold and warm air behind the wall, as well as dust and other particles, from flowing into the room on the wall surface side. Furthermore, when the cover 130 seals the wall hole 12, sound insulation properties may be imparted to the cover 130 to prevent a decrease in sound insulation properties due to the formation of the wall hole 12. Additionally or alternatively, fire resistance may be imparted to the cover 130 to prevent the inflow and outflow of toxic gases, smoke, flames, and the like generated in the event of a fire. Here, the wiring device 13 may be selected from any device installed in the wall 11, such as an outlet, a switch, or a lighting device. 9, the wiring device 13 is exemplified as a power outlet and includes a mounting frame 13a fixed to a wiring device mounting portion 114 of a wiring box 110 with screws via screw holes 13c, and a main body 13b supported by the mounting frame 13a. The wiring device 13 is configured so that wiring material 14, such as an electric cable, is connected to the back side of the main body 13b. Generally, a decorative cover 19 is attached to the front of the wiring device 13 to cover the periphery of the wiring device 13 from the front side of the wall.

[0024] A wiring device installation device 100 of this embodiment is a device for installing a wiring device 13 in a wall hole 12 drilled in a wall 11 of a building. FIG. 1 is an exploded perspective view of the wiring device installation device 100 of one embodiment of the present invention. As shown in FIG. 1, the wiring device installation device 100 includes a wiring box 110 as a wiring device fixing body that is installed in the wall hole 12 and to which the wiring device 13 is fixed, and a cover 130 for sealing the space between the wall surface space and the wall back space. The wiring device 13 may be fixed integrally to the wiring device fixing body. The installation structure 10 of this embodiment is a structure in which the wiring device 13 is installed on the wall 11 by the wiring device installation device 100 of this embodiment.

[0025] Referring to FIG. 2, a wiring box 110 exemplified as a wiring device fixture of the present invention will be described. FIG. 2 is a schematic perspective view of the wiring box 110. The wiring box 110 is a rectangular box with a bottom and is configured to accommodate a portion of the wiring device 13 and wiring material 14 therein. The wiring box 110 includes a rectangular annular side wall 111, a front opening 112 that opens in front of the side wall 111, and a rear wall 113 that closes the rear side of the side wall 111. In the wiring box 110 of this embodiment, the vertical (longitudinal) sides of the side wall 111 are longer than the horizontal (width) sides. The front opening 112 is formed inside the rectangular frame and is configured so that the internal space of the wiring box 110 faces the front side (wall surface side).

[0026] Furthermore, a wiring apparatus mounting portion 114 for fixing the wiring apparatus 13 through the front opening 112 is provided on the front surface of the wiring box 110. The wiring apparatus mounting portion 114 is a pair of screw holes formed above and below the front opening 112. That is, the wiring apparatus mounting portion 114 is configured so that a user can mount the wiring apparatus 13 from the front side of the wall through the wall opening 12 with screws. In this embodiment, the wiring apparatus mounting portion 114 is capable of mounting one wiring apparatus 13.

[0027] The side wall 111 is provided with through-holes 115 through which the wiring materials 14 can be inserted between the inside and outside. In this embodiment, two through-holes 115 are formed in each of a pair of vertical (vertical) side surfaces of the side wall 111. Each through-hole 115 is a hole large enough to insert one or more wiring materials 14. The through-holes 115 may be closed with a closing plate when not in use. In this case, the closing plate is punched out when the box is in use. Furthermore, a fixing portion 116 is provided on a side surface of the side wall 111 facing the width direction for fixing the wiring box 110 to a fixing surface. The fixing portion 116 is a through-hole extending in the front-to-rear direction into which a screw is driven. In this embodiment, as shown in FIG. 9 , the side surface adjacent to the front or rear surface of the pillar 15 is defined as the fixing surface 16.

[0028] Furthermore, alignment portions 118 for aligning the fixing position of the wiring box 110 are provided on the front surface of the frame surrounding the front opening 112. The alignment portions 118 are formed at the middle positions in the longitudinal and width directions, respectively, and consist of marks pointing to the outside of the frame. The alignment portions 118 are configured to indicate the center position of the wiring box 110 when viewed from the front. Specifically, by aligning the alignment portions 118 with the marking lines 17 drawn based on the reference position of the fixing surface 16 of the pillar material 15 of the building, the wiring box 110 can be installed in the reference position (a predetermined height position).

[0029] Next, a cover 130 according to one embodiment of the present invention will be described with reference to Figures 3 to 8. Figure 3 is a schematic perspective view of the cover 130 according to this embodiment. Figures 4(a) and 4(b) are a front view and a rear view of the cover 130. Figures 5(a) and 5(b) are a plan view and a side view of the cover 130. Figures 6 and 7 are AA and BB cross-sectional views of the cover 130. Figures 8(a) and 8(b) are plan views showing the extended and retracted states of the cover 130.

[0030] The cover 130 of this embodiment is made of a flexible material and is formed in the shape of a bottomed box with an opening at the front. The cover 130 is installed behind a wall with its front facing the wall surface and is configured to seal the wall surface space and the wall back space. As shown in FIGS. 3 to 7 , the cover 130 includes a peripheral wall portion 131 that extends from its front end to its rear end, defines an internal space behind the wall, and has an opening 132 at its front end that exposes the internal space to the wall surface; a flat bottom wall portion 133 that closes the rear end surface of the peripheral wall portion 131; and a rectangular frame-shaped flange portion (extending plate portion) 134 that extends outward from the outer periphery of the peripheral wall portion 131 on the front end side of the peripheral wall portion 131. The peripheral wall portion 131, the bottom wall portion 133, and the flange portion 134 are integrally formed.

[0031] The peripheral wall portion 131 has a rectangular ring shape in a front view that separates the interior and exterior. The opening 132 is defined by the inner circumferential surface of the peripheral wall portion 131 in a front view and connects the interior space with the exterior space. The opening 132 has a rectangular shape with long sides in the vertical direction. In this embodiment, the opening 132 is large enough to allow the wiring box 110 to pass through the opening 132 into the interior space. In other words, the opening 132 is larger than the front opening 112 of the wiring box 110. In this embodiment, the interior space separated by the peripheral wall portion 131 is large enough to accommodate the entire wiring box 110. Furthermore, in this embodiment, the peripheral wall portion 131 defines an internal storage space that allows relative movement of the wiring box 110 along the longitudinal direction (the extension direction of the fixed surface 16) when the wiring box 110 is accommodated therein.

[0032] The peripheral wall 131 is provided with a non-deformable region 131a that extends continuously from the front end and does not deform in the front-to-rear direction, and a deformable region 131b that is arranged behind the non-deformable region 131a and expands and contracts in the front-to-rear direction. The non-deformable region 131a is a flat, annular wall. As shown in FIG. 8, the deformable region 131b has a bellows shape that can expand and contract in the front-to-rear direction from its natural length. That is, the volume of the internal space can be expanded or contracted in the front-to-rear direction by the deformable region 131b expanding and contracting in the front-to-rear direction. FIG. 8(a) shows the deformable region 131b expanded to its maximum expanded length, and FIG. 8(b) shows the deformable region 131b contracted to its minimum contracted length. The deformable region 131b has a natural length L in the front-to-rear direction, and as shown in FIG. 8(a), it has a maximum expanded length L+ΔL1 and a minimum contracted length L-ΔL2. Here, the natural length L in the front-rear direction is greater than half the maximum extended length ((L+ΔL1) / 2). As will be described later, in this embodiment, when the deformation region 131b is at its natural length, the rear wall 113 and the bottom wall 133 of the wiring box 110 housed in the internal space are spaced apart in the front-rear direction, and the deformation region 131b can be shortened and deformed so as to move the bottom wall 133 forward from its natural length.

[0033] The non-deformation region 131a of the peripheral wall 131 has an introduction portion 135 for introducing the wiring 14 into the internal space. In this embodiment, the introduction portion 135 is formed only on two longitudinal side surfaces of the peripheral wall 131 (i.e., the top and bottom surfaces of the peripheral wall 131). Two introduction portions 135 are formed on each side surface. Each introduction portion 135 is a circular inwardly recessed portion that opens when the wiring 14 is inserted and remains closed when the wiring 14 is not inserted. The introduction portion 135 may be opened by cutting along the circular recess or by a notch. Here, since the introduction portion 135 is formed in the non-deformation region 131a, when the cover 130 is installed in the wall hole 12, the introduction portion 135 can always be positioned at a fixed position relative to the front end of the cover 130 or the flange portion 134, based on the front-to-rear distance between the flange portion 134 and the introduction portion 135. In addition, the position of each introduction section 135 is determined so that it is at least partially opposite each corresponding through-hole section 115 when the side wall section 111 of the wiring box 110 is accommodated in the internal space of the cover 130 and the opening section 132 and the front opening section 112 are arranged on the same plane.

[0034] Additionally, the non-deformation region 131a of the peripheral wall portion 131 is provided with a plurality of reinforcing ribs 136 extending in the front-to-rear direction. In this embodiment, three reinforcing ribs 136 are provided on each of the top and bottom surfaces of the peripheral wall portion 131. Specifically, two reinforcing ribs 136 are formed on both ends in the width direction, and one reinforcing rib 136 is formed in the center in the width direction. The introduction portion 135 is sandwiched between adjacent reinforcing ribs 136. The reinforcing ribs 136 structurally reinforce the periphery of the introduction portion 135, and thereby function to suppress deformation of the non-deformation region 131a without impeding deformation of the deformation region 131b when the wiring material 14 is introduced into the internal space through the introduction portion 135.

[0035] The flange portion 134 is an extending plate portion that protrudes by a predetermined size from the outer peripheral surface of the peripheral wall portion 131 at the front end position. The flange portion 134 is annular so as to surround the entire circumference of the opening 132, and its front surface is configured to abut the entire periphery of the wall hole 12. In other words, an abutment surface that extends annularly along the outer periphery of the opening 132 is formed on the front surface of the flange portion 134. The abutment surface is configured as a flat surface so that the front surface abuts the entire periphery of the wall hole 12 on the back surface of the wall without any gaps. In addition, the back surface of the flange portion 134 is positioned so that the cover 130 abuts against the side surface (front surface) of the pillar material 15. As described below, the flange portion 134 can be temporarily fixed to the fixed surface 16 by positioning the cover 130 at a predetermined position on the pillar material 15 using temporary fixing means such as adhesive tape or double-sided tape.

[0036] Furthermore, an indicator 137 is provided on the front surface of the flange 134 to indicate the fixing position of the cover 130. The indicators 137 are formed at intermediate positions in the longitudinal and width directions, and consist of triangular marks pointing outward from the flange 134. The indicators 137 are configured to indicate the center position of the cover 130 in a front view. For example, by aligning the indicators 137 with the marking lines 17 of the pillars 15 of the building, the cover 130 can be positioned and installed at a predetermined height.

[0037] The cover 130 of this embodiment is made of a flexible material that can adhere to a wall surface or the like so as to function as a packing. In particular, the cover 130 is preferably made of a soft synthetic resin that is transparent and flexible. For example, the cover 130 may be manufactured by forming a soft synthetic resin material such as polyvinyl chloride resin, polypropylene resin, or synthetic rubber into a predetermined shape by press molding or vacuum molding.

[0038] Alternatively, the cover 130 may be configured to have the following functionality.

[0039] The cover 130 of this embodiment may be formed from a high-specific gravity, high-hardness rubber as a sound-insulating material and integrally manufactured by a vulcanization molding method. That is, the cover 130 may be formed from an elastic material with high sound-insulating properties. This allows the cover 130 to function as a sound-insulating cover. The high-hardness rubber used is ethylene propylene diene rubber (EPDM), which has a specific gravity of 2 or more and a hardness of 85 to 95. The hardness of the rubber is measured using a durometer (JIS K6253), a measurement method used for vulcanized rubber. The cover 130 may be manufactured from rubber whose hardness is measured using a type D durometer for high hardness. The hardness of the cover 130 is preferably set to 85 or more so that vibration of the cover 130 due to sound propagating to the cover 130 from the surface of the wall is suppressed. Furthermore, the hardness of the cover 130 is preferably set to 85 or more in order to maintain the shape of the cover 130 (particularly the flange portion 134). Furthermore, the hardness of the cover 130 is preferably set to 95 or less in order to make the cover 130 easily deformable.

[0040] Furthermore, the cover 130 of this embodiment may be integrally molded from a heat-expandable material capable of maintaining its shape as a fire-resistant material. More specifically, the heat-expandable material is heat-expandable rubber. This heat-expandable rubber is formed by mixing an expansion agent (expandable graphite) that expands to more than twice its volume when exposed to high heat (e.g., 300°C or higher), molding the rubber into a predetermined shape (through a molding process), and then vulcanizing the rubber. The vulcanization process involves applying heat to the rubber that has undergone the molding process, causing a vulcanization (crosslinking) reaction or an adhesion reaction, resulting in a product with rubber elasticity. The heat-expandable rubber itself maintains the bottomed box shape of the cover 130. This allows the cover 130 to function as a fire-resistant cover. Alternatively, the cover 130 may be formed from a non-heat-expandable fire-resistant material such as flame-retardant rubber or flame-retardant resin. Furthermore, the cover 130 may be formed from a fire-resistant material with sound-insulating properties so as to combine the aforementioned sound-insulating and fire-resistant properties.

[0041] Next, an installation structure 10 for a wiring device 13 constructed by the wiring device installation device 100 of this embodiment will be described with reference to Figs. 9 to 12. Fig. 9 is a schematic perspective view showing the installation structure 10. Fig. 10 is a front view of the installation structure 10. Fig. 11 is a CC cross-sectional view of the installation structure 10. Fig. 12 is a DD cross-sectional view of the installation structure 10.

[0042] The installation structure 10 of this embodiment is a structure in which a wiring device 13 is installed in a hollow wall having walls 11, 18 erected on the front and rear sides of a pillar 15, which is a structure extending in the extension direction, through a wall hole 12 formed in the front wall 11. As shown in FIG. 9 , one of the sides of the pillar 15 adjacent to the front or rear side is set as a fixing surface 16, and a wiring box 110 and a cover 130 are fixed to the fixing surface 16 with screws. Specifically, screws pass through a fixing portion 116 of the wiring box 110 and a peripheral wall portion 131 of the cover 130 and are screwed into the pillar 15, thereby fixing the wiring box 110 and the cover 130 integrally to the fixing surface 16. Furthermore, a reference position (a reference height position) for installing the wiring box 110 as a wall-back installation body is determined in the extension direction of the fixing surface 16 based on a predetermined planned installation position of the wiring device 13 within the wall 11. A scribed line 17 is marked on at least the front surface of the side surface of the pillar material 15 based on the reference position. Then, the wiring box 110 is installed in a state aligned based on the scribed line 17. Specifically, the point indicated by the alignment portion 118 of the wiring box 110 and the scribed line 17 are positioned at the same height. Then, as shown in FIG. 10 , the wiring device 13 is fixed to the wiring device mounting portion 114 of the wiring box 110 through the wall hole 12. At this time, the mounting frame portion 13a of the wiring device 13 abuts against the periphery of the wall hole 12 from the front side, and the screws are screwed into the wiring device mounting portion 114 through the screw holes 13c, whereby the wall 11 is sandwiched between the wiring device 13 and the wiring box 110.

[0043] 11 and 12 , in the installation structure 10, the entire wiring box 110 is housed in the internal space of the cover 130, and the front surface (contact surface) of the flange portion 134 of the cover 130 abuts against the rear surface of the wall 11 (the peripheral edge of the wall hole 12). The annular flange portion 134 abuts against the entire peripheral edge of the wall hole 12, and the peripheral wall portion 131 and bottom wall portion 133 of the cover 130, together with the wiring box 110, cover the entire wall hole 12 from behind. In addition, the front surface of the frame surrounding the front opening 112 of the wiring box 110 also abuts against the peripheral edge of the wall hole 12. In other words, the side wall portion 111 of the wiring box 110 is housed in the internal space of the cover 130, and the opening 132 of the cover 130 and the front opening 112 of the wiring box 110 are arranged on the same plane. In the installation structure 10, the wall surface space (indoor space) and the back-of-wall space are sealed in a substantially airtight state (except for the insertion holes for the wiring material 14). In this embodiment, the deformation region 131b of the peripheral wall portion 131 of the cover 130 remains at its natural length, and the rear end (outer surface of the rear wall portion 113) of the wiring box 110 housed in the interior space is spaced apart in the front-to-rear direction from the inner surface of the bottom wall portion 133 of the cover 130. From this state, the deformation region 131b may be shortened to move the bottom wall portion 133 forward until the outer surface of the bottom wall portion 133 abuts against the rear wall portion 113. Although not shown, if the wiring box 110 is deeper, the deformation region 131b may be elongated to move the bottom wall portion 133 rearward, thereby allowing the wiring box 110 to be housed in the interior space.

[0044] In addition, in the installation structure 10, wiring material 14 as a cable is connected to the wiring fixture 13. As shown in FIG. 11 , when the wiring box 110 and the cover 130 are installed against the wall 11, the through-hole portion 115 of the wiring box 110 and the introduction portion 135 of the cover 130 are at least partially inwardly and outwardly communicated. The wiring material 14 extending into the space behind the wall is introduced into the internal space of the cover 130 through the open introduction portion 135 and is drawn into the internal space of the wiring box 110 through the through-hole portion 115 opposite the introduction portion 135. In the installation structure 10 of this embodiment, the wiring material 14 is wired in a substantially straight line so as to pass through the introduction portion 135 and the through-hole portion 115, which are opposed to each other vertically. That is, in the installation structure 10, the wiring material 14 is wired without any sharp bends, which can be said to improve the manageability of the wiring material 14.

[0045] FIG. 13 shows an installation structure 10′ using a wiring device installation device 100′ as another example. In the installation structure 10′ of FIG. 13, the distance between the front wall 11′ where the wall hole 12 is formed and the rear wall 18′ is small, and a shallow second wiring box 110′ (shallow fixed body) is selected. That is, the wiring device fixing body constituting the wiring device installation device 100′ may be composed of a wiring box (deep fixed body) 110 extending a first length in the front-rear direction and a second wiring box (shallow fixed body) 110′ extending a second length in the front-rear direction that is shorter than the first length. Either one may be selected and used based on the front-rear size of the back-of-wall space. In both the wiring box (deep fixed body) 110 and the second wiring box (shallow fixed body) 110', the introduction portion 135 and the through-hole portion 115 are configured to at least partially communicate inward and outward directions when the opening 132 and the front opening 112 of the cover 130 are arranged on the same plane. In other words, the inner ranges of the introduction portion 135 and the through-hole portion 115 overlap. In addition, in the installation structure 10' of FIG. 13, the deformation region 131b of the peripheral wall portion 131 of the cover 130 is deformed to shorten, and the bottom wall portion 133 is moved forward so as not to interfere with the rear wall 18'.

[0046] Next, a method for constructing an installation structure 10 using a wiring device installation device 100 according to one embodiment will be described with reference to FIGS. 14 and 15 . First, based on a predetermined planned installation position of the wiring device 13 within the wall surface of the wall 11, a reference position indicating a position for fixing the wiring box 110 to the fixing surface 16 of the pillar 15 is determined in the extension direction (height direction) of the fixing surface 16. Based on this reference position, a marking line 17 is applied to the side surface (front surface and / or fixing surface 16) of the pillar 15. In this embodiment, this marking line 17 corresponds to the center position in the height (vertical) direction of the wiring device 13 and the wiring box 110 to be installed. In other words, by aligning the alignment portion 118 of the wiring box 110 with the marking line 17, the wiring device 13 can be installed in a predetermined planned installation position.

[0047] As shown in FIG. 14 , the cover 130 is applied to the pillar 15 by abutting the back surface of the flange 134 against the front surface of the pillar 15 and abutting one side of the peripheral wall 131 against the fixed surface 16. Next, the flange 134 is attached to the front surface of the pillar 15 using temporary fixing means 139, such as adhesive tape or double-sided tape, to temporarily fix the cover 130 to the fixed surface 16. At this time, it is preferable to align the indication portion 137 of the cover 130 with the scribed line 17. The cover 130 may also be permanently fixed to the fixed surface 16 with screws or the like. Furthermore, since the flange 134 of the cover 130 is transparent, alignment is easy. Next, the wiring box 110 is grasped from the front side of the wall and inserted into the internal space inside the peripheral wall 131 through the opening 132 of the cover 130. When the cover 130 and the wiring box 110 are arranged, the deformation region 131b of the peripheral wall portion 131 may be expanded or contracted depending on the depth of the wiring box 110 and the front-to-rear width of the space behind the wall.

[0048] 15 , with the alignment portion 118 of the wiring box 110 aligned with the scribed line 17, a screw is screwed from the inside to the outside into the fixing portion 116. The screw is inserted from the front opening 112, penetrates the fixing portion 116 and the peripheral wall portion 131 of the cover 130, and is driven into the fixing surface 16.

[0049] Then, one or more introduction portions 135 for introducing wiring 14 wired behind the wall are selected, and insertion holes are formed in the introduction portions 135. It is preferable to introduce the tip portion of wiring 14 into the internal space of cover 130 via introduction portion 135, and then pass wiring 14 through through-hole portion 115 of wiring box 110, thereby drawing wiring 14 into the internal space of wiring box 110. Note that because the position of introduction portion 135 is determined based on flange portion 134, introduction portion 135 can always be positioned in a fixed position when cover 130 is installed relative to wall hole 12, making it possible to standardize installation.

[0050] Next, walls 11 and 18 are erected on the front and rear surfaces of the pillar 15, respectively, to form a hollow wall. At this time, the front surface of the flange portion 134 of the cover 130 is abutted against the rear surface of the wall 11. A portion of the flange portion 134 of the cover 130 is sandwiched between the rear surface of the wall 11 and the front surface of the pillar 15. A wall hole 12 is formed at a predetermined position in the front wall 11, and the wiring device mounting portion 114 of the wiring box 110 faces the wall surface through the wall hole 12. The drilling position of the wall hole 12 may be determined by detecting the position of the magnetic boss 119 of the box 110 from the wall surface. At this point, the front and rear spaces separated by the cover 130 are airtightly sealed. After the wall hole 12 is formed, the magnetic boss 119 in the center of the wiring box 110 is broken off. Next, the wiring material 14 is pulled out toward the wall surface, and the tip of the wiring material 14 is connected to the wiring device 13. Then, the wiring device 13 is fixed to the wiring device mounting portion 114 with screws, whereby the installation structure 10 can be constructed.

[0051] The following describes the effects of the cover 130 and the wiring apparatus installation device 100 according to one embodiment of the present invention.

[0052] According to the cover 130 of this embodiment, the peripheral wall portion 131 is composed of a non-deformable region 131a that extends continuously from the front end and does not deform in the front-rear direction, and a deformable region 131b that is arranged behind the non-deformable region 131a and expands and contracts in the front-rear direction. This allows the front-rear length of the peripheral wall portion 131 to be adjusted depending on the size of the wiring device 13 to be installed in the wall hole 12 and the front-rear space of the space behind the wall. Furthermore, the non-deformable region 131a of the peripheral wall portion 131 has an introduction portion 135 formed therein for introducing the wiring material 14 into the interior space. By providing the introduction portion 135 on the peripheral wall portion 131 of the cover 130, it is possible to utilize the relatively larger vertical and horizontal space (perpendicular to the front-rear direction) for routing the wiring material 14 when introducing the wiring material 14 from the external space behind the wall into the interior space of the peripheral wall portion 131, compared to the front-rear space behind the wall. This allows for greater flexibility in routing the wiring material 14. Furthermore, because the position of the introduction portion 135 in the front-to-rear direction is determined based on the flange portion 134, when the cover 130 is installed in the wall hole 12, the introduction portion 135 can always be positioned in a fixed position, making it possible to standardize installation. Therefore, the cover 130 of this embodiment allows the front-to-rear length of the peripheral wall portion 131 of the cover 130 to be variable, and also makes it possible to improve the ease of handling of the wiring material 14.

[0053] Furthermore, with the wiring apparatus installation device 100 of this embodiment, the side wall portion 111 of the wiring box 110 is accommodated in the internal space of the cover 130, and with the opening 132 of the cover 130 and the front opening 112 of the wiring box 110 arranged on the same plane, the introduction portion 135 and the through-hole portion 115 are at least partially inwardly and outwardly communicated. This allows the wiring material 14 to be arranged in a substantially linear manner so as to pass through the introduction portion 135 and the through-hole portion 115, further improving the ease of handling of the wiring material 14. Therefore, the wiring apparatus installation device 100 of this embodiment improves the ease of handling of the wiring material 14 and makes it possible to improve the workability of installing the wiring apparatus 13 on the wall 11.

[0054] [Second embodiment] Next, a wiring apparatus installation device 200 and a cover 230 according to another embodiment (second embodiment) of the present invention will be described with reference to Figures 16 to 20. Among the components represented by three-digit reference numbers in Figures 16 to 20, those with the same last two digits have the same or similar features unless otherwise specified, and the description thereof will be partially omitted.

[0055] A wiring device installation device 200 according to a second embodiment of the present invention is a device for installing a wiring device 23 in a wall hole 22 drilled in a wall 21 of a building. FIG. 16 is an exploded perspective view of the wiring device installation device 200. As shown in FIG. 16, the wiring device installation device 200 includes a wiring box 210 as a wiring device fixture that is installed in the wall hole 22 and to which a wiring device 23 is fixed, and a cover 230 for sealing the space between the wall surface and the space behind the wall. While the wiring device installation device 100 according to the first embodiment is configured to house the wiring box 110 in the internal space of the cover 130, the wiring device installation device 200 according to the second embodiment is configured to house the cover 230 in the internal space of the wiring box 210, thereby sealing the space between the wall surface and the space behind the wall.

[0056] As shown in FIG. 16 , the wiring box 210 has a configuration corresponding to the box (B1) described in Patent Document 1. The wiring box 210 is a rectangular box with a bottom, and is configured to accommodate a part of the wiring fixture 23 and the wiring material 24 therein. The wiring box 210 includes a side wall 211, a front opening 212 that opens in front of the side wall 211, and a rear wall 213 that closes the rear side of the side wall 211. The front opening 212 is formed inside the rectangular front wall, and is configured so that the internal space of the wiring box 210 faces the front side (wall surface side). The front opening 212 is also defined inside a cylindrical wall that protrudes forward from the front wall.

[0057] A wiring apparatus mounting portion 214 for fixing the wiring apparatus 23 through the front opening 212 is provided on the front surface of the wiring box 210. The wiring apparatus mounting portion 214 is a pair of screw holes formed above and below the front opening 212. That is, the wiring apparatus mounting portion 214 is configured so that a user can mount the wiring apparatus 23 from the front side of the wall through the wall hole 22 with screws. In this embodiment, the wiring apparatus mounting portion 214 is capable of mounting one wiring apparatus 23.

[0058] The side wall 211 is also provided with through-holes 215 that allow the wiring 24 to pass through from the inside to the outside. In this embodiment, two through-holes 215 are formed on each of all side surfaces of the side wall 211. Each through-hole 215 is closed by a closing plate when not in use, and when in use, the closing plate is punched out to form an insertion hole. As shown in FIG. 18 , a connector 215a is attached to the open through-hole 215, and the connector 215a is connected to a conduit arranged outside the wiring box 210 behind the wall. In this embodiment, although not shown, a fixing portion may be provided on the rear wall 213 of the wiring box 210 and configured to be supported by a support installed so as to extend from the side surface of a pillar material, for example.

[0059] FIG. 17 is a schematic perspective view of the cover 230 of this embodiment. FIGS. 18(a) and 18(b) are a plan view and a side view of the cover 230. As shown in FIGS. 17 and 18, the cover 230 of this embodiment is made of a flexible material and is formed in a box shape with a bottom and an opening at the front. The cover 230 is installed behind a wall with its front facing the wall surface and is configured to seal the wall surface space and the wall back space. The cover 230 includes a peripheral wall portion 231 that extends from its front end to its rear end, defines an internal space behind the wall, and has an opening 232 at its front end that exposes the internal space to the wall surface; a flat bottom wall portion 233 that closes the rear end surface of the peripheral wall portion 231; and a rectangular frame-shaped flange portion (extending plate portion) 234 that extends outward from the outer periphery of the peripheral wall portion 231 at the front end side of the peripheral wall portion 231. As in the first embodiment, the peripheral wall portion 231 is provided with a non-deformation region 231a that extends continuously from the front end and does not deform in the front-to-rear direction, and a deformation region 231b that is arranged next to the rear of the non-deformation region 231a and that expands and contracts in the front-to-rear direction.

[0060] In the cover 230 of this embodiment, the rectangular annular peripheral wall portion 231 has a shape and dimensions that allow it to be inserted into the internal space of the side wall portion 211 through the front opening 212 of the wiring box 210. The flange portion 234 is formed to cover the entire periphery of the front opening 212. That is, the rear surface of the flange portion 234 is configured to abut against the front surface of the cylindrical wall that forms the periphery of the front opening 212 of the wiring box 210. More preferably, the flange portion 234 is formed to cover the entire periphery of the wall opening 22 from the front by abutting the rear surface of the flange portion 234 against the periphery of the wall opening 22. Furthermore, the flange portion 234 is formed with through holes 234a through which screws for attaching the wiring fixture 23 to the wiring fixture attachment portion 214 can pass.

[0061] The non-deformation region 231a of the peripheral wall 231 has an introduction portion 235 for introducing the wiring 24 into the internal space. In this embodiment, the introduction portion 235 is formed on all side surfaces of the peripheral wall 231. Two introduction portions 235 are formed on each side surface. Each introduction portion 235 is a circular inwardly recessed portion that opens when the wiring 24 is inserted and remains closed when the wiring 24 is not inserted. The introduction portion 235 may be opened by cutting along the circular recess or by a notch. Here, since the introduction portion 235 is formed in the non-deformation region 231a, when the cover 230 is installed in the wall hole 22, the introduction portion 235 can always be positioned at a fixed position relative to the front end of the cover 230 or the flange portion 234, based on the distance between the flange portion 234 and the introduction portion 235. The position of each introduction section 235 is determined so that when the peripheral wall section 231 of the cover 230 is accommodated in the internal space of the wiring box 210 and the flange section 234 of the cover 230 abuts against the front edge of the wiring box 210 (the periphery of the front opening 212), it will at least partially face each corresponding through-hole section 215.

[0062] Additionally, the non-deformation region 231a of the peripheral wall portion 231 is provided with a plurality of reinforcing ribs 236 extending in the front-to-rear direction. In this embodiment, three or four reinforcing ribs 236 are provided on each of all side surfaces of the peripheral wall portion 231. Specifically, two reinforcing ribs 236 are formed on both sides of each reinforcing rib 236, and the introduction portion 235 is sandwiched between adjacent reinforcing ribs 236. The reinforcing ribs 236 structurally reinforce the periphery of the introduction portion 235, and thereby function to suppress deformation of the non-deformation region 231a without impeding deformation of the deformation region 231b when the wiring material 24 is introduced into the internal space through the introduction portion 235.

[0063] Next, an installation structure 20 for a wiring device 23 constructed by a wiring device installation device 200 of this embodiment will be described with reference to Figures 19 and 20. Figure 19 is a front view of the installation structure 20. Figure 20 is an E-E cross-sectional view of the installation structure 20.

[0064] The installation structure 20 is a structure in which a wiring device 23 is installed through a wall hole 22 formed in a wall 21, which is a structure extending in the extension direction. A wiring box 210 is fixed to the wall 21 through the wall hole 22 while being supported by a support body (not shown) arranged behind the wall. As shown in Fig. 20 , a mounting frame portion 23a of the wiring device 23 abuts against the periphery of the wall hole 22 from the front side, and a screw is threaded into a wiring device mounting portion 214 through a screw hole 23c, whereby the wall 21 is sandwiched between the wiring device 23 and the wiring box 210.

[0065] As shown in FIG. 20 , in the installation structure 20, the cover 230 is entirely housed in the internal space of the wiring box 210, and the rear surface (contact surface) of the flange portion 234 of the cover 230 abuts against the front surface of the wall 21 (the periphery of the wall hole 22) and the front surface of the wiring box 210 (the periphery of the front opening 212). In other words, the cover 230 covers the wall hole 22 and the front opening 212, thereby simultaneously closing them. In the installation structure 20, the wall surface space (indoor space) and the back-of-wall space are substantially airtightly sealed (except for the insertion holes for the wiring material 24). In this embodiment, the deformation region 231b of the peripheral wall portion 231 of the cover 230 remains at its natural length, and the rear wall portion 213 of the wiring box 210 and the rear end of the cover 230 (the outer surface of the bottom wall portion 233) are spaced apart in the front-rear direction. From this state, the deformation region 231b may be elongated and deformed in the front-rear direction.

[0066] In the installation structure 20, the wiring 24 serving as a cable is connected to the wiring fixture 23. As shown in FIG. 20 , when the wiring box 210 and the cover 230 are installed on the wall 21, the through-holes 215 of the wiring box 210 and the guiding portions 235 of the cover 230 are at least partially inwardly and outwardly communicated with each other. The wiring 24 inserted into the conduit 24a extending into the space behind the wall is drawn into the internal space of the wiring box 120 via the connector 215a and the through-holes 215 and is introduced into the internal space of the cover 230 via the guiding portion 235 that faces the through-holes 215 and is open. In the installation structure 20 of this embodiment, the wiring 24 is routed in a substantially straight line so as to pass through the guiding portions 235 and the through-holes 215 that face each other vertically. That is, in the installation structure 20, the wiring 24 is routed without any sharp bends, improving the ease of handling of the wiring 24.

[0067] Therefore, similarly to the first embodiment, the cover 230 of this embodiment has a variable front-to-rear length of the peripheral wall portion 231 of the cover 230, and can improve the ease of handling the wiring material 24. Similarly to the first embodiment, the wiring apparatus installation device 200 of this embodiment can improve the ease of handling the wiring material 24 and can improve the workability of installing the wiring apparatus 23 on the wall 21.

[0068] The present invention is not limited to the above-described embodiment, and various modifications are possible.

[0069] (1) The cover of the present invention is not limited to the configuration of the above embodiment. The cover may have an introduction portion provided in the bottom wall portion in addition to the introduction portion provided in the non-deformation region of the peripheral wall portion. In the wiring apparatus installation device, the through-hole portion formed in the rear wall portion of the wiring apparatus fixture and the introduction portion are configured to at least partially communicate in the inward and outward directions, thereby enabling the wiring material to be wired in a substantially linear manner in the front-to-rear direction.

[0070] (2) The wiring apparatus installation device of the present invention is not limited to the configuration of the above-described embodiment. While the wiring apparatus fixing body is exemplified as a wiring box, it may take various forms as long as it has at least the function of fixing a wiring apparatus. For example, the wiring apparatus fixing body may be a frame-shaped body having an annular side wall with an open rear (no rear wall). Furthermore, although the wiring box in the above-described embodiment is capable of mounting one wiring apparatus, it may be configured to mount multiple wiring apparatuses.

[0071] (3) The cover and wiring apparatus installation device of the present invention are not limited to the configurations of the above-described embodiments. In the above-described embodiments, the cover is configured so that its peripheral wall portion is disposed in the back space of the wall with the extension plate portion (flange portion) abutting the rear surface of the wall or the front surface of the wall. However, for example, if the wall is thick, the cover and / or wiring apparatus fixture may be installed only in the internal space of the wall hole. Alternatively, the internal space of the wall hole may be interpreted as part of the back space of the wall.

[0072] (4) The shape and dimensions of the cover of the present invention are not limited to the above-described embodiment. The opening and / or the extending plate of the cover do not have to be rectangular, and may be selected from any shape, such as a circle, an oval, or another polygon. Furthermore, the peripheral wall and / or the bottom wall of the cover are not limited to a flat shape, and may be any shape, such as a concave or convex curved surface.

[0073] The present invention is not limited to the above-described embodiments and modifications, and can be implemented in various forms within the technical scope of the present invention. [Explanation of symbols]

[0074] 10 Installation structure 11 Wall 12 wall hole 13 Wiring devices 14 Wiring material 15 Pillar material 16 Fixed surface 17 Scribing line (reference position) 18 Wall 19 Makeup Cover 100 Wiring equipment installation equipment 110 Wiring box (wiring device fixing body) 111 Side wall 112 Front opening 113 Rear wall 114 Wiring device mounting part 115 Through hole 116 Fixed part 118 Alignment section 119 Magnet boss 130 Cover 131 Peripheral wall section 131a Non-deformed region 131b Deformation region 132 Opening 133 Bottom wall 134 Flange portion (extension plate portion) 135 Introduction 136 Reinforcing rib 137 Instruction section 139 Temporary fixing means

Claims

1. A cover that is installed behind a wall or in a wall hole with the front facing the wall of a building, a peripheral wall portion extending from a front end to a rear end, defining an internal space behind the wall, and having an opening at the front end that exposes the internal space to the wall surface; an extension plate portion extending outward from the outer circumferential surface of the peripheral wall portion at a front end side of the peripheral wall portion, A cover characterized in that the peripheral wall portion is provided with a non-deformation area that extends continuously from the front end and does not deform in the front-to-back direction, and a deformation area that is arranged side by side to the rear of the non-deformation area and that expands and contracts in the front-to-back direction, and the non-deformation area has an introduction portion formed therein for introducing wiring material into the internal space.

2. The cover according to claim 1, wherein the non-deformation region is provided with a plurality of reinforcing ribs extending in the front-rear direction, and the guide portion is sandwiched between adjacent reinforcing ribs.

3. 3. The cover according to claim 1, wherein the deformation region has a bellows shape that is stretchable in the front-rear direction, and the natural length in the front-rear direction is greater than half the maximum stretched length.

4. A wiring device installation device for installing a wiring device in a wall hole drilled in a wall of a building, A cover according to claim 1 or 2; a wiring device fixing body that is installed in the wall hole and to which the wiring device is fixed, the cover further includes a bottom wall portion that closes a rear end of the peripheral wall portion, and the wiring apparatus fixture can be housed in the internal space through the opening, The deformation region has a bellows shape that can expand and contract back and forth, a rear end of the wiring device fixture housed in the internal space and the bottom wall portion spaced apart in the front-to-rear direction when the deformation region is at its natural length, and the deformation region is capable of being shortened and deformed so as to move the bottom wall portion forward from the natural length.

5. A wiring device installation device for installing a wiring device in a wall hole drilled in a wall of a building, A cover according to claim 1 or 2; a wiring device fixing body that is installed in the wall hole and to which the wiring device is fixed, the cover further includes a bottom wall portion that closes a rear end surface of the peripheral wall portion, and the wiring apparatus fixture can be housed in the internal space through the opening, The wiring apparatus fixing body includes a side wall portion, a front opening portion that opens in front of the side wall portion, a wiring apparatus attachment portion for fixing the wiring apparatus through the front opening portion, and a through-hole portion that allows a wiring material to be inserted into and out of the side wall portion, a wiring apparatus installation device, characterized in that the side wall portion of the wiring apparatus fixing body is accommodated in the internal space of the cover, and the introduction portion and the through-hole portion are at least partially inwardly and outwardly communicated with each other in a state in which the opening of the cover and the front opening of the wiring apparatus fixing body are arranged on the same plane.

6. the wiring apparatus fixing body is composed of a deep fixing body extending a first length in the front-rear direction and a shallow fixing body extending a second length in the front-rear direction that is shorter than the first length, and either the deep fixing body or the shallow fixing body is selected for use; The wiring device installation device of claim 5, wherein the deep fixing body and the shallow fixing body are configured so that the introduction portion and the through-hole portion are at least partially connected inward and outward directions when the opening and the front opening of the cover are arranged on the same plane.

7. A wiring device installation device for installing a wiring device in a wall hole drilled in a wall of a building, A cover according to claim 1 or 2; a wiring device fixing body that is installed in the wall hole and to which the wiring device is fixed, The wiring apparatus fixing body includes a side wall portion, a front opening portion that opens in front of the side wall portion, and a through-hole portion that allows a wiring material to be inserted into and out of the side wall portion, The cover is configured so that, when the cover is disposed inside the side wall portion through the front opening, an extension plate portion of the cover abuts against a front surface of the wiring apparatus fixing body, A wiring apparatus installation device, characterized in that, when the cover is disposed inside the side wall portion, the introduction portion and the through-hole portion are at least partially inwardly and outwardly communicated with each other.

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