JP7398346B2 - Installation structure of cover and wiring equipment - Google Patents

Description

The present invention relates to a cover for a wiring device installed in a through hole formed in a wall material, and an installation structure for the wiring device.

Generally, when wiring devices such as outlets and switches are installed in the wall material of a building, a through hole is formed in the wall material, and the wiring device is placed so as to face the wall surface through the wall material. Wiring is placed in the space behind the wall. This installation structure has sound insulation properties that suppress sound leakage through the through-holes in the wall materials, and in the event of a fire, toxic gases, flames, smoke, etc. can flow into the space through the through-holes in the wall materials. Alternatively, for the purpose of providing fire resistance to prevent leakage, it is necessary to take measures to close the through holes for installing wiring equipment without leaving any gaps.

For example, Patent Document 1 discloses a sound insulation device that is installed behind a wall so as to cover a through hole formed in a wall material and for fixing a wiring device to the front side of the wall. Hereinafter, in the relevant paragraph, the code of Patent Document 1 is shown in parentheses. The sound insulation device (100) includes a sound insulation cover (110) installed on the back of the wall so as to close the through hole (12), and a sound insulation cover (110) installed on the back of the wall from the wall surface through the through hole (12). A wiring fixture fixture (120) is placed on the wall surface and fixes the wiring fixture (13) to the wall surface. The sound insulation cover (110) includes a cover body (111) formed in the shape of a bottomed box and having a bottom wall (111a) and side walls (111b) made of a sound insulation material. The cover main body (111) has an opening (opening 114) on the front surface facing the bottom wall (111a), an accommodating part (113) for accommodating the wiring fixture fixture (120), and an opening (112). A contact portion (114) that extends along the outer periphery of the wiring fixture (114) and contacts the back surface of the wall at the front surface, and when the wiring fixture (13) is fixed to the wiring fixture fixture (120), the wiring fixture (13) and A clamped part (115) is clamped together with the wall material (11) by a wiring fixture fixture (120). The wiring fixture fixture (120) consists of a rigid flat frame (121) having a rectangular opening (121a) in the center. In order to install the wiring device (13) on the wall material (11) through the through hole (12) formed in the wall material (13), the through hole (12) formed in the wall material (11) must be installed. Place the sound insulating cover (110) from the front of the wall to the back of the wall, insert the wiring fixture fixture (120) into the through hole (12) from the wall front to the back of the wall, and attach the wiring fixture fixture (120). It is housed in the housing part (113) of the cover body (111). Then, with the contact part (114) on the front surface of the flange (111c) in contact with the periphery of the through hole (12) on the back of the wall, connect the clamped part (115) of the cover body (111) to the wiring fixture (13). The wiring fixture (13) is fixed to the wiring fixture fixture (120) so as to be sandwiched together with the wall material (11) by the wiring fixture fixture (120) and the wiring fixture fixture (120).

JP 2019-110618 Publication

In the conventional wiring device installation method as in Patent Document 1, a cover (sound insulating cover) is placed behind a wall through a through hole and temporarily fixed, and then a wiring device fixing tool is inserted into the housing part of the sound insulating cover through the through hole. need to be placed. In other words, in the conventional construction method, the work of passing the cover and the wiring fixture fixture through the through holes must be performed twice, so there is room for improvement in workability. Furthermore, when the through-hole is relatively small relative to the wiring fixture fixture, it may be difficult to place the wiring fixture fixture from the front of the wall through the through-hole to the back of the wall. That is, the problem is to solve the operational problems of the prior art and to further improve the installation work of wiring devices.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a cover and a wiring device installation structure that enable easier construction of a wiring device installation structure. It's about doing.

The cover according to claim 1 is a cover that is installed behind a wall so as to fix a wiring device through a through hole formed in a wall material and close the through hole,
It is formed into a box shape with a bottom and has a bottom wall and side walls made of a flexible material, and has an opening that opens at the front surface opposite to the bottom wall, and an opening that extends along the outer periphery of the opening and connects the front surface to the back surface of the wall. a cover body having an abutting flange;
at least a pair of fixing members integrally formed with the cover body and spaced apart from each other across the center of the opening;
It is characterized in that the region between the pair of fixing members can be bent and deformed.

A cover according to a second aspect of the present invention is the cover according to the first aspect, wherein a part of each of the fixing members is disposed within a wall thickness of the flange of the cover main body.

A third aspect of the present invention provides a cover according to the first aspect, in which a portion of each fixing member is joined to a rear surface of the flange of the cover body.

The cover according to claim 4 is the cover according to claim 1, in which each of the fixing members is integrally joined to the front surface of the flange of the cover main body, and the front surface of the flange has a part that contacts the back surface of the wall. The fixing member is characterized in that a contact surface that contacts the contact surface and a joint surface that is set back from the contact surface and to which the fixing member is joined are formed.

According to the cover according to claim 5, in addition to the effect of the invention according to claim 4, the front surface of the fixing member is located behind the contact surface.

The cover according to claim 6 is the cover according to any one of claims 1 to 5, in which at least a part of each of the fixing members is exposed to the front surface of the cover main body through the opening, and A feature is that a screw hole for fixing the wiring device with a screw is provided in the exposed part of the fixing member.

The cover according to claim 7 is the cover according to any one of claims 1 to 6, wherein the cover main body is formed of an elastic material having sound insulation properties and/or thermal expansion properties. shall be.

The cover according to claim 8 is the cover according to any one of claims 1 to 7, wherein the side wall of the cover main body has a bellows shape in which peaks and valleys continue alternately. It is characterized by

The cover according to claim 9 is the cover according to any one of claims 1 to 8, characterized in that the fixing member is made of a hard material made of hard synthetic resin or metal.

The wiring device installation structure according to claim 10 includes a wall material having a wall surface and a wall back surface in which a through hole is formed;
The cover according to any one of claims 1 to 8 installed behind a wall;
a wiring fixture fixed to the wall material via a fixing member of the cover,
The wiring device and the fixing member sandwich the wall material with the front surface of the flange of the cover in contact with the periphery of the through hole on the back surface of the wall.

According to the cover according to claim 1, the pair of fixing members are integrally formed with the cover main body, the pair of fixing members are arranged to be spaced apart from each other across the center of the opening, and the cover The area between the pair of fixing members of the main body is configured to be bendable. In other words, since the cover body and the fixing member are integrally formed, the user can simply move the cover to the back of the wall through the through hole and install the cover in a state where the wiring equipment can be fixed. . Furthermore, even though the through hole is smaller than the cover, by bending the cover body, the cover can be reliably passed through the through hole. Therefore, the cover of the present invention makes it possible to more easily and reliably form an installation structure for a through hole in a wall material.

According to the cover according to claim 2, in addition to the effect of the invention according to claim 1, when the cover is placed behind a wall through the through hole and the flange is brought into contact with the back surface of the wall, the fixing member and the wiring By sandwiching part of the wall material and the flange thickness between the device and the device, the cover can be more easily installed behind the wall while the through hole is more reliably closed.

According to the cover of claim 3, in addition to the effect of the invention of claim 1, when the cover is placed behind a wall through the through hole and the flange is brought into contact with the back of the wall, the fixing member and the wiring By sandwiching the entire thickness of the wall material and flange between the device and the device, the cover can be more easily installed behind the wall while the through hole is more reliably closed.

According to the cover of claim 4, in addition to the effect of the invention of claim 1, the cover is placed on the back of the wall through the through hole, and the flange is brought into contact with the back of the wall to connect the fixing member and the wiring device. By sandwiching the wall material between them, the cover can be more easily installed behind the wall with the through hole closed.

According to the cover of claim 5, in addition to the effect of the invention of claim 4, the cover is disposed behind the wall through the through hole, and the flange is brought into contact with the back surface of the wall to connect the fixing member and the wiring fixture. When the wall material is held between the flange and the flange, the flange can be more reliably brought into close contact with the back surface of the wall by utilizing the force that draws the fixing member (positioned back from the contact surface) toward the front surface. That is, the cover can be more easily installed behind the wall while the through hole is more reliably closed.

According to the cover according to claim 6, in addition to the effects of the invention according to any one of claims 1 to 5, the screw hole of the fixing member is exposed to the front surface of the cover, so that the wiring device can be screwed with respect to the cover. It is easy to fix.

According to the cover according to claim 7, in addition to the effects of the invention according to any one of claims 1 to 6, the cover main body is made of a sound insulating material, thereby reducing noise from the through hole of the wall material (cover installation location). By effectively suppressing sound leakage and/or by using a thermally expandable material for the cover body, in the event of a fire, the volume of the cover body can thermally expand to effectively close the through hole.

According to the cover according to claim 8, in addition to the effects of the invention according to any one of claims 1 to 7, the side wall of the cover main body can be freely expanded and contracted in the height direction due to the bellows shape. Therefore, the cover body can be easily expanded and contracted in the front and rear directions with a simple structure.

According to the cover according to claim 9, in addition to the effects of the invention according to any one of claims 1 to 8, since the fixing member is made of a hard material, the wall material can be fixed with stronger force by the fixing member and the wiring device. It becomes possible to apply pressure.

According to the wiring device installation structure according to claim 10, it is possible to more easily and reliably close the through hole while exhibiting the effects of the invention according to any one of claims 1 to 9.

(a) A schematic perspective view seen from the front and (b) a schematic perspective view seen from the back of a cover according to an embodiment of the present invention. (a) Plan view, (b) Front view, (c) Side view, and (d) Back view of the cover of FIG. 1. AA sectional view of the cover in FIG. 2. BB sectional view of the cover in FIG. 2. FIG. 3 is a sectional view taken along line CC of the cover in FIG. 2. 1 is a schematic cross-sectional view of an installation structure for a wiring device according to an embodiment of the present invention. FIG. 7 is an exploded perspective view of the installation structure of FIG. 6; FIG. 2 is a schematic diagram showing a step of arranging a cover from the wall surface to the back side of the wall through the through hole in a method of installing a wiring device through a through hole formed in a wall material. FIG. 3 is a schematic diagram showing a process of fixing a wiring device to a cover in a method of installing a wiring device through a through hole formed in a wall material. FIG. 3 is a schematic cross-sectional view of an installation structure for a wiring device according to another embodiment of the present invention. FIG. 3 is a schematic diagram showing a cover according to another embodiment of the present invention. FIG. 3 is a schematic diagram showing a cover according to another embodiment of the present invention. (a) A schematic perspective view seen from the front and (b) a schematic perspective view seen from the back of a cover according to another embodiment of the present invention. (a) Plan view, (b) Front view, (c) Side view, and (d) Back view of the cover of FIG. 13. 15 is a DD sectional view of the cover in FIG. 14. FIG. 15 is a sectional view taken along line EE of the cover in FIG. 14. FIG. 15 is a sectional view taken along line FF of the cover in FIG. 14. FIG. 6 is a schematic enlarged sectional view of an installation structure for a wiring device according to another embodiment of the present invention.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. Note that the shapes in the figures referred to in the following description are conceptual diagrams or schematic diagrams for explaining preferred shapes and dimensions, and the dimensional ratios etc. do not necessarily match the actual dimensional ratios. That is, the present invention is not limited to the dimensional ratios in the drawings.

The cover 100 according to an embodiment of the present invention seals the through hole 12 when installing the wiring device 13 to the wall material 11 through the through hole 12 formed in the wall material 11 that constitutes a hollow wall. It is often used. When sealing the through hole 12 with the cover 100, the cover 100 may be provided with sound insulation properties to prevent deterioration of the sound insulation performance due to the formation of the through hole 12. Additionally or alternatively, the cover 100 may be provided with fire resistance to prevent the inflow and outflow of toxic gases, smoke, flames, etc. generated in the event of a fire. Moreover, the installation structure 10 of this embodiment is a structure in which the wiring fixture 13 is installed on the wall material 11 by the cover 100 of this embodiment.

FIGS. 1A and 1B are schematic perspective views of the cover 100 of this embodiment as seen from the front and back. 2(a) to (d) are a plan view, a front view, a side view, and a rear view of the cover 100. FIG. 3 to 5 are an AA sectional view, a BB sectional view, and a CC sectional view of the cover 100.

The cover 100 of the present embodiment includes a cover main body 110 formed of a flexible material in the shape of a bottomed box with an opening on the front, and (at least) a pair of fixed plates (fixed plates) integrally formed on the cover main body 110. member) 120.

The cover main body 110 includes a bottom wall 111 in the shape of a substantially rectangular flat plate that defines the rear surface, side walls 112 erected from the four sides of the bottom wall 111 to the front side, and a predetermined length extending inward from the front ends of all the side walls 112. It is integrally constructed with the flange 113. Each side wall 112 has a bellows shape in which a plurality of pairs of peaks and valleys are alternately continuous. By deforming the bellows-shaped side wall 112 in the height (standing) direction, the cover main body 110 can be expanded and contracted back and forth.

Further, in this embodiment, the bottom wall 111 of the cover body 110 is formed thicker than the side walls 112. As a result, the relatively thick bottom wall 111 effectively insulates the sound propagating in the front direction of the wall material 11, and the relatively thin side wall 112 ensures high elasticity of the cover body 110. In this embodiment, the thickness of the bottom wall 111 is 2 mm, and the thickness of the side wall 112 and flange 113 is 1 mm. In order to experience an improvement in sound insulation performance against sound propagating in the front-rear direction, the thickness of the bottom wall is preferably about 1.5 times or more than the thickness of the side walls. That is, the cover 100 may be provided with sound insulation properties. Further, on the outer surface of the bottom wall 111, a display section 111a is formed to display the position at which a cut is made for passing the wires of the wiring device 13. When the cable is routed to pass through the bottom wall 111, the bottom wall 111 can be cut using a cutter or the like using the display portion 111a as a mark. Furthermore, the thickness of the cover 100 can be arbitrarily determined depending on the installation environment, and it goes without saying that the bottom wall 111 and the side walls 112 may have the same thickness.

An opening 114 is provided inside the flange 113 of the cover body 110 and has a substantially oval shape on the front surface facing the bottom wall 111 . In other words, the flange 113 forms a peripheral edge surrounding the entire circumference of the opening 114. It is preferable that the shape of the opening 114 corresponds to the shape of the through hole 12 formed in the wall material 11. Further, a housing portion 115 surrounded by a peripheral wall (bottom wall 111, side wall 112) is formed inside the cover body 110. The accommodating portion 115 is a space for accommodating a part of the wiring device 13 as desired. A contact surface 113 a that extends annularly along the outer periphery of the opening 114 is formed on the front surface of the flange 113 . The contact surface 113a is configured in a planar shape so that the front surface contacts the periphery of the through hole 12 on the back surface of the wall all around without a gap. Preferably, double-sided tape may be placed on the front surface of the contact surface 113a as a sticking means (not shown). By pasting the pasting means around the periphery of the through hole 12, the cover 100 can be temporarily held at a predetermined position on the back surface of the wall. Also, as will be described later, a part of the flange 113 (a portion that overlaps with the fixing plate 120) is a part of the flange 113 that is held between the back surface of the wall and the fixing plate 120 when the wiring device 13 is fixed to the fixing plate 120. Becomes a department.

The cover main body 110 of this embodiment is made of high specific gravity and high hardness rubber as a sound insulating material, and may be integrally manufactured by a vulcanization molding method. That is, the cover body 110 may be formed of an elastic material having high sound insulation performance. Thereby, the cover 100 can function as a sound insulating cover. Incidentally, as the high hardness rubber, ethylene propylene diene rubber (EPDM) is used, and a rubber having a specific gravity of 2 or more and a hardness of 85 to 95 is used. Further, the hardness of the rubber is measured by a measurement method using a durometer (JIS K6253), which is a measurement method used for vulcanized rubber. The cover body 110 may be made of rubber whose hardness is measured using a type D durometer for high hardness. The hardness of the cover main body 110 is preferably set to 85 or higher so that when sound generated on the wall surface side propagates to the cover 100, the cover main body 110 can be suppressed from vibrating due to the sound. Further, the hardness of the cover body 110 is preferably set to 85 or more in order to maintain the shape of the cover body 110 (particularly, the flange 113). Further, the hardness of the cover body 110 is preferably set to 95 or less so that the cover body 110 can be easily deformed.

Further, the cover main body 110 of this embodiment may be integrally molded with a heat-expandable material that can maintain its shape as a fireproof material. More specifically, the thermally expandable material is a thermally expandable rubber, and this thermally expandable rubber is an expandable material whose volume expands to more than twice its volume before heating when exposed to high heat (e.g., 300°C or higher). It is made by mixing rubber (expanded graphite) and molding it into a predetermined shape (having gone through a molding process), and then going through a vulcanization process. Note that the vulcanization process is a process in which heat is applied to the rubber that has undergone the molding process to cause a vulcanization (crosslinking) reaction or an adhesive reaction to obtain a product having rubber elasticity. The cover body 110 maintains its bottomed box shape due to the thermally expandable rubber itself. Thereby, the cover 100 can function as a fireproof cover. Alternatively, the cover body 110 may be formed of a non-thermal expandable fire-resistant material such as flame-retardant rubber or flame-retardant resin.

Furthermore, the cover 100 may be formed of a fire-resistant material having sound-insulating properties so as to have both the above-described properties of sound-insulating properties and fire-resistant properties. Alternatively, cover 100 may be formed of a material that does not have any of the above characteristics.

The fixing plate 120 is a rigid fixing member for fastening and fixing the wiring device 13 with screws 125. The pair of fixing plates 120, 120 are each formed integrally with the cover main body 110, and are spaced apart from each other across the center of the opening 114. Further, the pair of fixing plates 120, 120 are arranged at the upper end and lower end of the opening 114 in the longitudinal direction, respectively, and are provided as a pair at opposing positions with the opening 114 interposed therebetween. The pair of fixing plates 120, 120 are spaced apart or separated from each other in the longitudinal direction, and a gap is formed on the opening 114 between which the wiring device 13 can be placed.

Each fixed plate 120 includes a rectangular plate portion 121 of a predetermined thickness made of a hard material. The plate-like portion 121 of each fixing plate 120 is provided with a screw hole 124 into which a screw 125 is screwed. Note that the plate-like portion 121 only needs to have sufficient rigidity to fix the wiring device 13 by tightening the screws 125, and the hard material forming the plate-like portion 121 may be made of hard synthetic resin, metal, wood, etc. can be selected.

As shown in FIGS. 4 and 5, each fixing plate 120 is integrally fixed to the cover body 110 by being partially embedded within the thickness of the flange 113 of the cover body 110. On the other hand, a portion of the fixing plate 120 extends within the opening 114. That is, the plate-like portion 121 of the fixing plate 120 includes an exposed portion 122 exposed from the opening 114 to the front side, and an overlapping portion 123 that overlaps integrally with the flange 113. The screw hole 124 of each fixing plate 120 is formed in the exposed portion 122 so as not to overlap the flange 113. The pair of screw holes 124 are located on the long axis of the opening 114 and face the front side from the opening 114. On the other hand, the overlapping portion 123 is located behind the abutting surface 113a of the flange 113, and can function to press the flange 113 against the back surface of the wall and bring it into close contact in the installation structure 10 described below. That is, the front surface of the fixing plate 120 is positioned backward from the contact surface 113a of the flange 113.

In the present embodiment, the cover 100 is formed integrally with a relatively flexible cover body 110 made of synthetic resin and a pair of fixing plates 120 made of relatively hard synthetic resin by double molding. It is something. That is, the cover 100 is composed of a flexible region that can be elastically bent and deformed, and two separate rigid regions. The rigid regions are spaced apart from each other at two locations on the upper end side and the lower end side of the front surface of the cover 100, and a flexible region exists between these regions. Therefore, the cover 100 can be bent at the central portion in the longitudinal direction and elastically deformed into a compact shape.

Next, with reference to FIGS. 6 and 7, the installation structure 10 for the wiring device 13 constructed using the cover 100 of this embodiment will be described. FIG. 6 is a schematic cross-sectional view showing the installation structure 10. FIG. 7 is an exploded perspective view of the installation structure 10.

As shown in FIG. 6, in the installation structure 10 of this embodiment, the wiring fixture 13 is installed on the wall material 11 so as to face the wall surface through the through hole 12. That is, the installation structure 10 of this embodiment includes a wall material 11 having a wall surface and a wall back surface in which through holes 12 are formed, a cover 100 installed on the back of the wall, and a fixing plate 120 of the cover 100. and a wiring fixture 13 fixed to the wall material 11. The wiring fixture 13 may be selected from any fixture installed on the wall material 11, such as an outlet, a switch, and a lighting device. The wiring device 13 includes a mounting frame portion 13a fixed to a fixing plate 120 via a screw hole 13c, and a main body portion 13b supported by the mounting frame portion 13a. The mounting frame portion 13a has a frame shape that can come into contact with the periphery of the through hole 12 of the wall material 11 from the wall surface, and is larger than the through hole 12.

In the installation structure 10, the cover 100 is arranged in the back wall space so that the opening 114 of the cover 100 communicates with the through hole 12, and the contact surface 113a on the front side of the flange 113 of the cover body 110 is connected to the periphery of the through hole 12 on the back side of the wall. The through hole 12 is closed by the cover 100. As a result, the cover 100 seals and separates the wall surface space from the wall back space in the through hole 12. A part of the wiring device 13 (main body part 13b) is arranged in the housing part 115 of the cover 100. In this embodiment, the shape of the through hole 12 and the shape of the opening 114 are almost the same. Further, exposed portions 122 of the pair of fixing plates 120 face the front through the opening 114 and the through hole 12. Then, screws 125 are screwed into the screw holes 13c and 124 with the screw holes 13c of the mounting frame 13a and the screw holes 124 of the fixing plate 120 aligned in the depth direction of the through hole 12. Due to the fastening force of the screws 125, the overlapping portion 123 of the plate-like portion 121 of the fixing plate 120 and the mounting frame portion 13a of the wiring device 13 can ) is being squeezed. In other words, the contact surface 113a of the flange 113 is in close contact with the back surface of the wall with strong force, and the through hole 12 is sealed by the cover body 110 without any gap. As a result, in the installation structure 10, the wiring fixture 13 is installed on the wall material 11 with the through hole 12 closed with the cover 100.

When the installation structure 10 is provided for sound insulation, the sound insulation cover 100 closes the through hole 12, so that the through hole 12 is sealed with the sound insulation material without any gaps. As a result, the cover 100 effectively suppresses deterioration in sound insulation due to the installation of the wiring device 13.

When the installation structure 10 is provided for fireproof purposes, the fireproof cover 100 closes the through-hole 12 so that toxic gas, smoke, flames, etc. generated by a fire can pass through the through-hole 12 to the back of the wall. To effectively prevent toxic gas, smoke, flame, etc. from flowing into a space or from flowing into a wall surface space from the back side of a wall. In addition, even if a severe fire occurs from the front side of the wall, such as the wiring equipment 13 melting due to heat, the cover body 110 thermally expands several times and closes the through hole 12, allowing toxic gas, smoke, flame, etc. to penetrate. It is possible to more reliably prevent the liquid from flowing out into another space through the hole 12.

Next, with reference to FIGS. 8 and 9, a method of installing the wiring fixture 13 to the wall material 11 through the through hole 12 formed in the wall material 11 in order to construct the installation structure 10 of this embodiment. Explain. In addition, for convenience of explanation, depiction of the main body portion 13b of the wiring device 13 is omitted in the drawings.

First, as shown in FIG. 8, the cover 100 is placed from the front side of the wall to the back side of the wall through the through hole 12 formed in the wall material 11. More specifically, the cover 100 is crushed in the front-rear direction (the direction in which the side walls 112 are erected), and the cover 100 is deformed by being bent approximately in half in the flexible region between the pair of fixed plates 120, 120. . Thereby, the entire cover 100 can be temporarily deformed to a size that allows it to pass through the through hole 12 or a compact shape that allows it to pass through easily. After the deformed cover 100 is passed through the through hole 12, it is elastically returned to its original shape and placed in the space behind the wall. Preferably, in the space behind the wall, the cover 100 is temporarily held at a predetermined position behind the wall by pasting the contact surface 113a of the flange 113 to the periphery of the through hole 12 on the back surface of the wall using adhesive means (double-sided tape). Can be done.

Next, as shown in FIG. 9, the wiring fixture 13 is fixed to the pair of fixing plates 120 with screws 125 so that the wall material 11 is sandwiched between the wiring fixture 13 and the fixing plate 120. More specifically, with the contact surface 113a on the front surface of the flange 113 in contact with the periphery of the through hole 12 on the back side of the wall, the wiring device is inserted into the pair of screw holes 124, 124 facing from the through hole 12 toward the front side of the wall. Attach the mounting frame portion 13a of the wiring device 13 to the wall surface so that the pair of screw holes 13c, 13c of the wiring device 13 are aligned. Next, the screws 125 are screwed into the upper and lower screw holes 13c and 124, respectively. By strongly tightening the screws 125, the wiring device 13 and the fixing plate 120 are drawn toward each other, and the clamped portion of the flange 113 can be pinched by the wiring device 13 and the fixing plate 120 together with the wall material 11. This fastening force allows the abutment surface 113a to be more reliably pressed (adhered) to the back surface of the wall with a strong force, thereby sealing the space between the wall material 11 and the flange 113 without any gaps. As a result, the wiring device 13 can be installed on the wall material 11 while the through hole 12 is closed with the cover 100.

Note that, as in the installation structure 10' shown in FIG. 10, in order to add sound insulation performance, a sound-absorbing filling member 117 made of a foaming material such as foamed urethane is sprayed onto the inner surface of the cover main body 110 to at least fill the housing portion 115. Some spaces may be additionally filled or supplemented. Alternatively, as the filling member 117, in place of foamed urethane, at least a portion of the space of the housing portion 115 may be filled with heat-resistant putty or thermally expandable putty in order to improve fire resistance. Thermal-expandable putty is a clay-like thermally-expandable heat-resistant sealing material, and this thermal-expandable putty is an expanding material that expands to more than twice its volume before heating when exposed to high heat (e.g., 300°C or higher). (expanded graphite) etc.

Hereinafter, the effects of the cover 100 according to one embodiment of the present invention will be described.

According to the cover 100 of this embodiment, the pair of fixing plates 120, 120 are integrally formed with the cover body 110, and the pair of fixing plates 120, 120 are spaced apart from each other with the center of the opening 114 in between. The area between the pair of fixing plates 120 of the cover body 110 is configured to be bendable. That is, since the cover body 110 and the fixing plate 120 are integrally formed, the user can simply move the cover 100 to the back of the wall through the through hole 12 and the cover 100 can be fixed to the wiring fixture 13. can be installed behind the wall. Furthermore, although the through hole 12 is smaller than the cover 100, by bending the cover main body 110 at the flexible region between the pair of fixing plates 120, the cover 100 is temporarily deformed into a compact shape, and the through hole is 12 allows for easy passage. In addition, in the cover 100 of this embodiment, the screw holes 124 of the fixing plate 120 are exposed through the opening 114 on the front surface of the cover main body 110, so that the wiring device 13 can be screwed when constructing the installation structure 10. 125 makes it easy to fix. Furthermore, when the cover 100 is placed behind the wall through the through hole 12 and the flange 113 is brought into contact with the back surface of the wall, a portion of the wall material 11 and the flange 113 is disposed between the fixing plate 120 and the wiring fixture 13. By clamping the cover 100, the cover 100 can be more easily installed behind the wall while the through hole 12 is more reliably closed. Therefore, the cover 100 of this embodiment allows the installation structure 10 to be formed more easily and reliably in the through hole 12 of the wall material 11.

The present invention is not limited to the embodiments described above, and can take various embodiments and modifications. Hereinafter, a plurality of modified examples of the present invention will be described. In each embodiment, components having the same last two digits have the same or similar features unless otherwise specified, and their description will be partially omitted.

(1) The cover of the present invention is not limited to the above embodiments, and can take various forms. For example, the fixing member does not need to be embedded within the thickness of the cover body. A cover 200 according to the second embodiment shown in FIG. 11 includes a cover main body 210 and a pair of fixing plates 220. A portion of each fixing plate 220 is joined to the rear surface of the flange 213 of the cover body 210. That is, the fixing plate 220 may be integrally formed on the back surface of the flange 213 of the cover body 210 by adhesive. The plate-shaped portion 221 of the fixing plate 220 has an exposed portion 222 exposed from the opening 214 to the front side, and an overlapping portion 223 that adheres to the flange 213. Further, the front surface of the fixing plate 220 is located backward from the contact surface 213a of the flange 213. When the cover 200 is placed on the back of the wall through the through hole and the flange 213 is brought into contact with the back of the wall, the wall material and the flange 213 are held between the overlapping part 223 of the fixing plate 220 and the wiring device. The cover 200 can be more easily installed behind the wall while the through hole is more reliably closed.

(2) The cover of the present invention is not limited to the above embodiments, and can take various forms. For example, the fixing member is not limited to the shape of the above embodiment. A cover 300 according to the third embodiment shown in FIG. 12 includes a cover main body 310 and a pair of fixing members 320. In this embodiment, each fixing member 320 has a U-shaped plate portion 321 obtained by cutting the frame in half. A portion of the plate-like portion 321 is embedded within the thickness of the flange 313 of the cover body 310. That is, the plate-like portion 321 has an exposed portion 322 and an overlapping portion 323. Further, the front surface of the fixing member 320 is positioned backward from the contact surface 313a of the flange 313. In this embodiment, since the overlapping portion 323 has a U-shape, when installing the cover 300, the flange 313 can be pressed over a wider area against the back surface of the wall, and can be brought into closer contact with the wall more reliably. Further, the plate-like portion 321 of the fixing member 320 is provided with a locking portion 326 that projects forward. The locking portion 326 is an arcuate protrusion that is formed to follow the shape of the inner peripheral surface of the through hole 12 . By bringing the pair of locking portions 326 into contact with the inner peripheral surface of the through hole 12, the installation position of the cover 300 on the wall material can be determined.

(3) The installation structure of the cover and wiring device of the present invention is not limited to the above embodiments, and may take various forms. For example, the fixing member does not need to be arranged on the back side of the flange of the cover body. 13 to 17 show a cover 400 according to a fourth embodiment. Moreover, FIG. 18 shows the installation structure 40.

The cover 400 includes a cover body 410 and a pair of fixing plates 420. An opening 414 having a substantially rectangular shape is provided inside the flange 413 of the cover body 410 on the front surface facing the bottom wall 411 . The opening 414 was defined to be smaller than the shape of the through hole in its long axis (vertical direction in front view). The front surface of the flange 413 includes a contact surface 413a that extends annularly along the outer periphery of the opening 414, and a pair of contact surfaces that extend backward from the contact surface 413a and to which the rear surface of the fixing plate 420 is joined. A bonding surface 413b is formed. The pair of joint surfaces 413b, 413b are recessed in the upper and lower edges of the flange 413 adjacent to the opening 414. The distance that the joint surface 413b recedes was suitably determined to be greater than the thickness of the fixed plate 420. As a result, as shown in FIGS. 15 and 17, the front surface of the plate-like portion 421 of the fixing plate 420 is located behind the contact surface 413a of the flange 413. Further, as shown in FIG. 16, the fixing plate 420 does not extend into the opening 414, but is joined to the front surface of the flange 413, so that the entire front surface of the plate-shaped portion 421 is exposed to the front side. It forms part 422. A screw hole 424 is formed approximately in the center of the exposed portion 422 of each fixing plate 420. This screw hole 424 is closed by the flange 413 on the rear side. In this embodiment, the screw hole 424 is formed in the form of a tapped hole, but the form of the screw hole is not limited in the present invention.

In this embodiment, the cover body 410 is made of rubber, and the fixing plate 420 is made of a metal plate. The fixing plate 420 was adhered to the cover body 410 by vulcanization adhesion with rubber so as to prevent peeling, lifting, cracking, tearing, etc.

FIG. 18 shows an installation structure 40 for a wiring device 43 in which a through hole 42 is closed by a cover 400. In the installation structure 40, the cover 400 is arranged in the space behind the wall so that the opening 414 of the cover 400 communicates with the through hole 42, and the contact surface 413a on the front surface of the flange 413 of the cover body 410 is connected to the periphery of the through hole 42 on the back surface of the wall. The through hole 42 is closed by a cover 400. As a result, the cover 400 seals and separates the wall surface space from the wall back space in the through hole 42. Further, the screw holes 424 of the pair of fixing plates 420 face the front through the through holes 42. Then, with the screw hole of the wiring device 43 and the screw hole 424 of the fixing plate 420 aligned in the depth direction of the through hole 12, a screw 425 is screwed into the communicating screw hole. Due to the fastening force of the screws 425, a part of the flange 413 is deformed, and the fixing plate 420, which was originally retracted, moves to the front side and comes into direct pressure contact with the back surface of the wall. In this way, by utilizing the force that draws the fixing plate 420 toward the front surface, the abutment surface 413a of the flange 413 can be more reliably brought into close contact with the back surface of the wall. The wall material 41 is held between the fixing plate 420 and the wiring fixture 43 (without intervening the thickness of the flange 413). As a result, in the installation structure 40, the wiring fixture 43 is installed on the wall material 41 with the through hole 42 closed with the cover 400.

Note that in this embodiment, the front surface of the flange 413 and the front surface of the fixing plate 420 may be arranged on the same plane. Even in such a case, it is possible to close the through hole 42 with the wiring fixture 43 installed by bringing the contact surface 413a of the flange 413 into contact with the back surface of the wall.

(4) The shape and dimensions of the cover main body of the present invention are not limited to the above embodiments. The opening of the cover main body does not have to be oval, and may be selected from any shape such as a rectangle or other polygon. Further, the bellows structure of the side wall may be omitted. Further, the cover main body is not limited to a rectangular shape when viewed from the front, and may have an arbitrary shape such as a circular shape. Further, the bottom wall of the cover body is not limited to a planar shape, and may have any shape such as a concave surface or a convex surface.

(5) The cover of the present invention is not limited to the above embodiments, and can take various forms. In the embodiment described above, the pair of fixing members are integrally formed on the cover body, but other fixing members may be additionally provided as long as there is an area where the cover body can be bent.

The present invention is not limited to the embodiments and modifications described above, but can be implemented in various forms within the technical scope of the present invention.

10 Installation structure 11 Wall material 12 Through hole 13 Wiring fixture 13a Mounting frame 13b Main body 13c Screw hole 100 Cover 110 Cover main body 111 Bottom wall 111a Display section 112 Side wall 113 Flange 113a Contact surface 114 Opening section 115 Accommodation section 117 Filling member /Sound absorbing member 120 Fixed plate (fixed member)
121 Plate-shaped part 122 Exposed part 123 Overlapping part 124 Screw hole 125 Screw

Claims (10)

A cover that fixes a wiring device through a through hole formed in a wall material and is installed behind the wall so as to close the through hole,
It is formed into a box shape with a bottom and has a bottom wall and side walls made of a flexible material, and has an opening that opens at the front surface opposite to the bottom wall, and an opening that extends along the outer periphery of the opening and connects the front surface to the back surface of the wall. a cover body having an abutting flange;
at least a pair of fixing members integrally formed with the cover body and spaced apart from each other across the center of the opening;
A cover that is bendable and deformable in a region between the pair of fixing members. The cover according to claim 1, wherein a portion of each of the fixing members is disposed within the wall thickness of the flange of the cover body. The cover according to claim 1, wherein a portion of each of the fixing members is joined to a rear surface of the flange of the cover body. Each of the fixing members is integrally joined to the front surface of the flange of the cover main body, and the front surface of the flange has a contact surface that contacts the back surface of the wall, and a contact surface that is set back from the contact surface and includes the fixing member. 2. The cover according to claim 1, further comprising a joining surface to which the parts are joined. 5. The cover according to claim 4, wherein the front surface of the fixing member is located behind the abutting surface. At least a portion of each fixing member is exposed to the front surface of the cover body through the opening, and a screw hole for fixing a wiring device with a screw is provided in the exposed portion of the fixing member. Cover according to any one of claims 1 to 5, characterized in that: 7. The cover according to claim 1, wherein the cover body is made of an elastic material having sound insulation properties and/or thermal expansion properties. The cover according to any one of claims 1 to 7, wherein the side wall of the cover body has a bellows shape in which peaks and valleys are alternately continuous. 9. The cover according to claim 1, wherein the fixing member is made of a hard material made of hard synthetic resin or metal. A wall material having a wall surface and a wall back surface in which a through hole is formed;
The cover according to any one of claims 1 to 9 installed behind a wall;
a wiring fixture fixed to the wall material via a fixing member of the cover,
An installation structure for a wiring device, characterized in that the wiring device and the fixing member sandwich the wall material with the front surface of the flange of the cover in contact with the periphery of the through hole on the back side of the wall.

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