Installation structure of wiring device

Abstract

To provide an installation structure of a wiring apparatus capable of easily coping with a difference in the position of a screwed part without damaging a screwing part or the like during installation.SOLUTION: At the edge of the opening 12 of the frame body 11 for installation, belt-like screwing pieces 20 and 20 which are bent in the front and rear direction are projected into the opening 12. A first screw fastening part 21, a second screw fastening part 22, a third screw fastening part 23, a fourth screw fastening part 24, and a fifth screw fastening part 25 are provided in order from the 20a part of the base part in each screw fastening piece 20 toward the tip of the screw fastening piece 20. The screwing portion to be screwed can be selected from the first screwing portion 21 to the fifth screwing portion 25 according to the distance in the front-rear direction to the screwed portions 32, 32 of the switch box 31 disposed in the wall. The selected screwing part is abutted on the parts 32, 32 to be screwed according to screwing of the selected screwing part to the parts 32, 32 to be screwed.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an installation structure for installing wiring equipment used as, for example, a power outlet device. [Background technology]

[0002] Conventionally, an installation structure for installing wiring devices on a wall surface or the like has been devised, for example, as described in Patent Document 1. That is, in this installation structure, wiring devices are attached to a metal installation frame, and the installation frame is screwed to a switch box located behind it (for example, buried in the wall). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-253020 Summary of the Invention [Problem to be solved by the invention]

[0004] Typically, the distance between the installation frame and the switch box in the longitudinal direction varies depending on the installation site, due to factors such as wall thickness. Therefore, in some cases, a gap may form between the screw-fastening portion on the installation frame and the screw-receiving portion on the switch box. If a screw is attempted despite this gap, the screw may be damaged, potentially damaging either the screw-fastening portion or the screw-receiving portion, or both. Therefore, the installation process becomes extremely cumbersome if the screw torque must be adjusted appropriately to prevent damage to the screw-fastening portion. Another possible solution is to prepare multiple types of installation frames with different screw-fastening positionings to account for the difference in the distance between the screw-fastening portion and the screw-receiving portion, and use them depending on the wall thickness, but this approach entails high manufacturing and management costs.

[0005] Therefore, the present invention has been made in consideration of the above problems, and aims to provide an installation structure for wiring devices that can easily accommodate differences in the position of the screwed portion without damaging the screwed portion or the like during installation. [Means for solving the problem]

[0006] In order to achieve the above object, the invention described in claim 1 of the present invention is an installation structure for wiring equipment in which a screw-fastening portion is provided on an installation frame body on which wiring equipment is attached, and a screw-received portion is provided on the installation side on which the wiring equipment is to be installed, and the wiring equipment is installed by screwing the screw-fastening portion from the front side of the screw-fastening portion, and a band-shaped screw-fastening piece that bends in the front-to-rear direction protrudes in a predetermined direction from the installation frame body, and a plurality of screw-fastening portions are provided between the base and the tip of the screw-fastening piece, with the screw-fastening portion being at different distances from the base, so that the screw-fastening portion to be screwed can be selected depending on the distance in the front-to-rear direction to the screw-fastened portion, and the screw-fastening portion abuts the screw-fastened portion as the selected screw-fastening portion is screwed into the screw-fastened portion. According to a second aspect of the present invention, the screw fastening piece has an elongated screw fastening hole extending across the plurality of screw fastening portions. [Effects of the Invention]

[0007] According to the present invention, a strip-shaped screw fastening piece that bends in the front-rear direction is protruded in a predetermined direction from an installation frame body. Furthermore, multiple screw fastening portions are provided between the base and tip of the screw fastening piece, each at a different distance from the base. The screw fastening portion to be screwed can be selected depending on the front-rear distance to the screwed portion. Furthermore, when the selected screw fastening portion is screwed into the screwed portion, the screw fastening portion abuts the screwed portion. Therefore, even if the front-rear distance to the screwed portion varies depending on the installation site, no gap is generated between the screw fastening portion and the screwed portion during installation, effectively preventing damage to the screw fastening portion or the screwed portion. Furthermore, there is no need to adjust the torque for each installation site, simplifying the installation process. Furthermore, there is no need to prepare multiple types of installation frame bodies, reducing manufacturing and management costs. Furthermore, according to the invention described in claim 2, a long screw hole extending across multiple screw portions is drilled in the screw piece, which allows for fine adjustment of the screw position, thereby further improving the workability of the installation work. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is an exploded perspective explanatory view showing the installation structure of the wiring box. [Figure 2] FIG. 2 is an explanatory diagram showing the installation frame body from the front side. [Figure 3] FIG. 4 is an explanatory diagram showing the installation frame body from the right side. [Figure 4] FIG. 3 is an explanatory diagram showing a cross section taken along line AA in FIG. 2. [Figure 5] 10A and 10B are explanatory diagrams showing the state in which each screw-fastening portion of the screw-fastening piece is abutted against the portion to be screwed and screwed in, where (a) shows the first screw-fastening portion, (b) shows the second screw-fastening portion, and (c) shows the third screw-fastening portion abutting against the portion to be screwed. [Figure 6]An explanatory diagram showing the state in which each screw-fastening portion of the screw-fastening piece is abutted against the portion to be screwed and screwed in, where (a) shows the fourth screw-fastening portion and (b) shows the fifth screw-fastening portion abutting against the portion to be screwed. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wiring box installation structure according to an embodiment of the present invention will be described in detail below with reference to the drawings.

[0010] FIG. 1 is an explanatory perspective view showing an exploded view of the installation structure of the wiring box 1. FIG. 2 is an explanatory view showing the installation frame body 11 from the front. FIG. 3 is an explanatory view showing the installation frame body 11 from the right side. FIG. 4 is an explanatory view showing a cross section taken along line AA in FIG. 2. FIG. 5 is an explanatory view showing the state in which each screwing portion of the screwing piece 20 is abutted against the screwed portion 32 and screwed in, where (a) shows the first screwing portion 21, (b) shows the second screwing portion 22, and (c) shows the third screwing portion 23. FIG. 6 is an explanatory view showing the state in which each screwing portion of the screwing piece 20 is abutted against the screwed portion 32 and screwed in, where (a) shows the fourth screwing portion 24, and (b) shows the fifth screwing portion 25.

[0011] The wiring box 1 is used as a component of a so-called outlet device. The front of the wiring box 1 is provided with sockets 2, 2 for inserting the blades of a plug (not shown). The wiring box 1 is attached to a metal installation frame 11. A rectangular opening 12 (as viewed from the front) capable of accommodating the wiring box 1 is provided in the center of the installation frame 11. The periphery of the opening 12 functions as abutment 13 for abutting against a wall surface during installation. Mounting pieces 14, 14 protrude rearward from the upper and lower edges of the opening 12 for screwing the wiring box 1. Furthermore, screw fastening pieces 20, 20 are provided on both left and right ends of the upper edge of the opening 12 for screwing to a switch box 31. The switch box 31 is a conventionally known box-shaped box with a top, bottom, left side, right side, and back, and an open front. The edges of the front opening are provided with screw-receiving portions 32, 32 for screwing the installation frame 11.

[0012] The screw fastening piece 20 is formed in a strip shape extending downward from the upper edge of the opening 12 and is an elastic piece that can bend in the front-to-rear direction. The screw fastening piece 20 includes a base 20a that slopes downward toward the rear, a first screw fastening portion 21 extending from the tip of the base 20a, a second screw fastening portion 22 extending from the tip of the first screw fastening portion 21, a third screw fastening portion 23 extending from the tip of the second screw fastening portion 22, a fourth screw fastening portion 24 extending from the tip of the third screw fastening portion 23, and a fifth screw fastening portion 25 extending from the tip of the fourth screw fastening portion. The screw fastening piece 20 is bent forward in stages for each of the screw fastening portions 21 to 25 from the tip of the base 20a to the fifth screw fastening portion 25, and is sloped forward as it slopes downward toward the fifth screw fastening portion 25. Furthermore, an elongated screw hole 26 extending from the first screw portion 21 to the fifth screw portion 25 is drilled in the center of the screw piece 20 in the left-right direction. The angle between the base 20a and the first screw portion 21 is 165°, and the angle between the first screw portion 21 and the second screw portion 22 is 169°. The angle between the second screw portion 22 and the third screw portion 23 is 172°, and the angle between the third screw portion 23 and the fourth screw portion 24 is 173°. The angle between the fourth screw portion 24 and the fifth screw portion 25 is 165°.

[0013] Here, the installation work of the wiring box 1 will be described. First, the switch box 31 is fixed in an installation hole (not shown) in the wall with the screw-receiving portions 32 facing forward. Meanwhile, with the wiring box 1 housed in the opening 12, the wiring box 1 is screwed to the mounting pieces 14, 14, integrating the wiring box 1 and the installation frame body 11. Next, the abutting portions 13 are abutted against the wall surface around the installation hole, and installation screws 50 are screwed into the screw-receiving portions 32 through the screw holes 26, 26. As described below, the installation frame body 11 is screwed to the switch box 31 with the screw-receiving portions 20 abutting against the screw-receiving portions 32, 32, and the installation of the wiring box 1 is complete.

[0014] When screwing the installation frame body 11 to the switch box 31, if the longitudinal distance from the surface of the wall to the screwed portion 32 is 5.5 mm, the installation screw 50 is screwed into the screwed portion 32 at the upper end of the screw hole 26. Then, as shown in FIG. 5( a), the installation frame body 11 is screwed to the switch box 31 with the first screwed portion 21 abutting against the screwed portion 32. On the other hand, if the longitudinal distance from the surface of the wall to the screwed portion 32 is 9.5 mm, the installation screw 50 is screwed into the screwed portion 32 slightly below the upper end of the screw hole 26. Then, as shown in FIG. 5( b), the installation frame body 11 is screwed to the switch box 31 with the second screwed portion 22 abutting against the screwed portion 32. Furthermore, if the front-to-rear distance from the surface of the wall to the screwed portion 32 is 12.5 mm, the installation screw 50 is screwed into the screwed portion 32 slightly above the vertical center of the screw hole 26. Then, as shown in FIG. 5(c), the installation frame body 11 is screwed to the switch box 31 with the third screwed portion 23 abutting against the screwed portion 32.

[0015] Furthermore, when screwing the installation frame body 11 to the switch box 31, if the front-to-back distance from the wall surface to the screwed portion 32 is 15 mm, the installation screw 50 is screwed into the screwed portion 32 at approximately the vertical center of the screw hole 26. Then, as shown in FIG. 6( a), the installation frame body 11 is screwed to the switch box 31 with the fourth screwing portion 24 abutting against the screwed portion 32. Furthermore, if the front-to-back distance from the wall surface to the screwed portion 32 is 21 mm, the installation screw 50 is screwed into the screwed portion 32 at the bottom of the screw hole 26. Then, as shown in FIG. 6( b), the installation frame body 11 is screwed to the switch box 31 with the fifth screwing portion 25 abutting against the screwed portion 32.

[0016] According to the installation structure for the wiring box 1 having the above-described configuration, strip-shaped screw fastening pieces 20, 20 that bend in the front-rear direction are provided on the edges of the opening 12 of the installation frame body 11 and protrude into the opening 12. Furthermore, five screw fastening portions, namely, a first screw fastening portion 21, a second screw fastening portion 22, a third screw fastening portion 23, a fourth screw fastening portion 24, and a fifth screw fastening portion 25, are provided in this order from the base 20a of each screw fastening piece 20 toward the tip of the screw fastening piece 20, each at different distances from the base 20a. The screw fastening portion to be screwed can be selected from the first screw fastening portion 21 to the fifth screw fastening portion 25 depending on the front-rear distance to the screwed portions 32, 32 of the switch box 31 disposed within the wall. Furthermore, as the selected screw fastening portion is screwed into the screwed portions 32, 32, the selected screw fastening portion abuts against the screwed portions 32, 32.

[0017] Therefore, even if the distance to the screwed portions 32, 32 in the front-to-rear direction varies depending on the installation site due to factors such as wall thickness, no gaps will be created between the screwed portions and the screwed portions 32 during installation. This effectively prevents damage to the screwed pieces 20 and the screwed portions 32. Furthermore, there is no need to adjust the torque for each installation site, which simplifies the installation process. Furthermore, there is no need to prepare multiple types of installation frame bodies, which reduces manufacturing and management costs.

[0018] Furthermore, since the screw fixing piece 20 has a long screw fixing hole 26 extending from the first screw fixing portion 21 to the fifth screw fixing portion 25, it is possible to fine-tune the screw fixing position, thereby further improving the workability of the installation work.

[0019] The installation structure of the wiring device according to the present invention is not limited to the above-described embodiment, and the structure of the screw fastening piece and the screwed portion can be appropriately changed as needed within the scope of the present invention.

[0020] For example, in the above embodiment, the screw fastening pieces are located on both the left and right sides of the wiring device within the opening provided in the installation frame body, but the screw fastening pieces may be located on both the top and bottom sides, or the screw fastening pieces may be configured to be located on the outside of the abutment portion rather than within the opening, and the position and number of the screw fastening pieces can be designed and modified as appropriate. Furthermore, in the above embodiment, a plurality of screw fastening portions are provided continuously from the first screw fastening portion toward the tip end side, but it is of course also possible to provide screw fastening portions intermittently.

[0021] Furthermore, in the above embodiment, only one elongated screw hole extending from the first screw portion to the fifth screw portion is provided as a screw hole for screwing, but it is also possible to configure it so that a screw hole is provided for each screw portion (i.e., the same number of screw holes as the number of screw portions are provided), or to configure it so that a first screw hole extending from the first screw portion to the third screw portion and a second screw hole extending from the fourth screw portion to the fifth screw portion are provided, and the shape and number of the screw holes can also be changed as appropriate. It goes without saying that the number of screw portions is not limited to five. Furthermore, in the above embodiment, the installation to a screwed portion provided on a switch box embedded in a wall is described, but the present invention can also be suitably adopted as an installation structure for installation to a screwed portion provided outside a wall. Additionally, in the above embodiment, a wiring device used as an outlet device has been described, but the present invention can also be suitably employed as an installation structure for other wiring devices, such as a lighting switch device. [Explanation of symbols]

[0022] 1··Wiring box (wiring device), 11··Installation frame body, 12··Opening, 14··Mounting piece, 20··Screw fastening piece, 20a··Base, 21··First screw fastening portion, 22··Second screw fastening portion, 23··Third screw fastening portion, 24··Fourth screw fastening portion, 25··Fifth screw fastening portion, 26··Screw fastening hole, 31··Switch box (installed side), 32··Screwed portion, 50··Installation screw.

Claims

1. A wiring device installation structure in which a screw fastening portion is provided on an installation frame body to which a wiring device is attached, and a screwed portion is provided on an installation side on which the wiring device is to be installed, and the wiring device is installed by screwing the screw fastening portion from a front side of the screwed portion, a belt-shaped screw fastening piece that is flexible in the front-rear direction is provided on the installation frame body in a predetermined direction, and a plurality of the screw fastening portions are provided at different distances from the base between the base and the tip of the screw fastening piece, The wiring device installation structure is characterized in that the screw-fastening portion to be screwed can be selected depending on the distance in the front-to-rear direction to the screw-receiving portion, and the screw-fastening portion abuts against the screw-receiving portion as the selected screw-fastening portion is screwed into the screw-receiving portion.

2. 2. The wiring device installation structure according to claim 1, wherein the screw fastening piece has an elongated screw fastening hole extending across the plurality of screw fastening portions.

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