Wiring device plate and wiring device assembly

Abstract

The present invention provides a wiring device plate and a wiring device assembly, and the purpose is to improve the degree of freedom of design. The wiring device plate (10) has a first plate (1) and a second plate (2). The first plate (1) and the second plate (2) are both installed on the wiring device in such a way that the front surface of the wiring device is located on the inner side of the first opening window (11) and the second opening window when viewed from the front. A portion of the second plate (2) overlaps with the first plate (1) in the front-to-back direction. The second plate (2) has an outer peripheral portion (24) protruding from the outer peripheral edge of the first plate (1) in a direction intersecting the front-to-back direction. The wiring device plate (10) also has a step portion (14) between the outer peripheral edge of the first plate (1) and the outer peripheral portion (24) of the second plate (2), and the step portion constitutes a step in the front-to-back direction.

Description

[0001] The present application is a divisional application of an application with a filing date of 2017.11.28, an application number of 201711217760.8, and an invention name of “Plate for wiring device and wiring device assembly”. Technical Field

[0002] The present invention generally relates to a wiring fixture plate and a wiring fixture assembly, and more particularly, to a wiring fixture plate and a wiring fixture assembly to be mounted on a wiring fixture. Background Art

[0003] Conventionally, there is a known socket installed on a construction surface, for example, as disclosed in Document 1 (Japanese Patent Application Publication No. 2009-238533). In the socket described in Document 1, a decorative plate is mounted on an assembly frame used to install the socket on a construction surface. The decorative plate has an exposure hole that exposes the front surface of a cover of the socket provided with a plug insertion port to the front.

[0004] With respect to a wiring fixture plate such as a decorative plate used in a socket (wiring fixture) of the above-mentioned conventional example, it is desired to improve the degree of freedom in designing the wiring fixture plate in terms of, for example, size, shape, and / or design. Summary of the invention

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wiring fixture plate and a wiring fixture assembly that can improve the degree of freedom in design.

[0006] A wiring device plate according to one technical solution of the present invention comprises a first plate and a second plate. The first plate has a first opening window penetrating the first plate in the front-to-back direction. The second plate has a second opening window penetrating the second plate in the front-to-back direction, and the second plate is located behind the first plate. The first plate is mounted on the wiring device in such a manner that the front surface of the wiring device is located inside the first opening window when viewed from the front. The second plate is mounted on the wiring device in such a manner that the front surface of the wiring device is located inside the second opening window when viewed from the front. A portion of the second plate overlaps the first plate in the front-to-back direction. The second plate has an outer peripheral portion protruding from the outer peripheral edge of the first plate in a direction intersecting the front-to-back direction. The wiring device plate also has a step portion between the outer peripheral edge of the first plate and the outer peripheral portion of the second plate, the step portion constituting a step in the front-to-back direction.

[0007] A wiring device assembly according to one aspect of the present invention includes the wiring device plate described above and a wiring device to which the wiring device plate is mounted. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a perspective view showing the installed state of the wiring device plate and the wiring device assembly according to the first embodiment.

[0009] Figure 2 It is a front view of the first plate and the second plate in the wiring device plate.

[0010] Figure 3 This is an exploded perspective view of the wiring device plate.

[0011] Figure 4 This is an exploded perspective view of the wiring device assembly.

[0012] Figure 5 This is a plan view of the first plate and the second plate in the wiring fixture plate as viewed from the left.

[0013] Figure 6 This is a plan view of the first plate and the second plate in the wiring fixture plate as viewed from above.

[0014] Figure 7 This is a plan view of the wiring fixture plate as viewed from the rear.

[0015] Figure 8 This is a perspective view of the first plate and the third plate in the wiring fixture plate as viewed from the rear.

[0016] Fig. 9 This is an enlarged perspective view of the first plate and the second plate in the wiring fixture plate as viewed from the rear.

[0017] Fig. 10A This is an enlarged exploded perspective view of the wiring device plate as viewed from the rear.

[0018] Fig. 10B This is an enlarged perspective view of the wiring fixture plate as viewed from the rear.

[0019] Fig.11 This is a plan view of the wiring device assembly as viewed from the left.

[0020] Fig.12 This is an enlarged plan view of the first plate and the second plate in the wiring fixture plate as viewed from the left.

[0021] Fig.13 This is an enlarged plan view of the first plate and the second plate in the wiring fixture plate as viewed from the left.

[0022] Fig.14 It is an exploded perspective view of the wiring device plate and the wiring device assembly according to the second embodiment.

[0023] Fig.15 It is an exploded perspective view of a wiring device plate and a wiring device assembly according to a third embodiment.

[0024] Description of Reference Numerals

[0025] 1 1st plate; 11 1st opening window; 14 step portion; 15 protruding wall; 151 mounting recess; 152 1st recess; 19 gap; 2 2nd plate; 21 2nd opening window; 24 outer peripheral portion; 25 mounting protrusion; 26 2nd recess; 3, 300 3rd plate; 31, 301 3rd opening window; 36 protrusion; 5, 500 wiring device; 10 plate for wiring device; 101, 102, 103 wiring device assembly; A1 construction surface. DETAILED DESCRIPTION

[0026] (Implementation Method 1)

[0027] (1) Summary

[0028] First, use Figure 1 to Figure 4 , an overview of the wiring device plate 10 and the wiring device assembly 101 according to the present embodiment will be described.

[0029] The wiring device assembly 101 of the present embodiment includes a wiring device plate 10 and a wiring device 5 mounted on the wiring device plate 10. In the present embodiment, the wiring device 5 is a switch, but may be a socket or the like as shown in Embodiment 2 described later.

[0030] The wiring device 5 is installed on the construction surface A1 (here, the wall surface of the building) in a state where the wires are electrically connected to the wiring device 5. The wiring device 5 is an embedded wiring device and is installed on the construction surface A1 using a mounting frame 4. Specifically, the wiring device 5 is installed on the construction surface A1 by fixing the mounting frame 4 on which the wiring device 5 is installed relative to, for example, an embedded box. The embedded box mentioned here is a box-shaped member with one side open, and is set in the wall in a manner such that the above-mentioned one side is exposed from the construction hole formed on the construction surface A1.

[0031] The wiring device plate 10 is configured to cover the mounting frame 4 when the wiring device 5 is installed on the construction surface A1. That is, by installing the wiring device plate 10 on the wiring device 5, the wiring device plate 10 can be used to cover the mounting frame 4 and other parts that are not desired to be exposed to the outside, so that the front surface of the wiring device 5 is exposed to the outside. In addition, the wiring device plate 10 has an appearance for making the wiring device 5 inconspicuous in an environment where the wiring device 5 is installed.

[0032] The wiring device plate 10 has a first plate 1 and a second plate 2. The second plate 2 is located closer to the construction surface A1 than the first plate 1 in a direction orthogonal to the construction surface A1 (front-rear direction). In addition, a portion of the second plate 2 overlaps with the first plate 1 in the front-rear direction. The second plate has an outer peripheral portion 24 that protrudes from the outer peripheral edge of the first plate 1 in a direction intersecting the front-rear direction. Moreover, the wiring device plate 10 also has a step portion 14 between the outer peripheral edge of the first plate 1 and the outer peripheral portion 24 of the second plate 2, and the step portion 14 constitutes a step in the front-rear direction.

[0033] Therefore, the wiring device plate 10 of the present embodiment can have a three-dimensional design utilizing the step portion 14 in addition to a planar design utilizing the outer peripheral portion 24 of the second plate 2, thereby increasing the degree of freedom in design.

[0034] (2) Details

[0035] Hereinafter, the wiring device plate 10 and the wiring device assembly 101 of the present embodiment will be described in detail. In the following description, when the wiring device 5 is installed on the building wall surface as the construction surface A1, the direction perpendicular to the construction surface A1 is referred to as the "front-rear direction", the first plate 1 side when viewed from the second plate 2 is referred to as the "front", and the second plate 2 side when viewed from the first plate 1 is referred to as the "rear". In addition, in the following description, the direction perpendicular to the front-rear direction and parallel to the horizontal direction is referred to as the "left-right direction", the right side when viewing the wiring device plate 10 from the front is referred to as the "right", and the left side is referred to as the "left". Moreover, the direction perpendicular to both the front-rear direction and the left-right direction, that is, the direction perpendicular to the horizontal plane is referred to as the "up-down direction", and the upper side when viewing the wiring device plate 10 from the front is referred to as the "upper side", and the lower side is referred to as the "lower side".

[0036] Here, the arrows indicating "front", "rear", "up", "down", "left", and "right" in the drawings are only marked for explanation and do not exist with the entity. In addition, the above directions do not limit the use direction of the wiring device plate 10 and the wiring device assembly 101. For example, when the wiring device 5 is installed on the ground, the "front and back direction" becomes a direction orthogonal to the horizontal plane, and the left and right direction and the up and down direction become directions parallel to the horizontal plane.

[0037] like Figure 1 to Figure 4As shown, the wiring device assembly 101 of the present embodiment includes a wiring device plate 10, a mounting frame 4, and a wiring device 5. In the present embodiment, the wiring device plate 10, the mounting frame 4, and the wiring device 5 are installed on the construction surface A1 in such a manner that the length direction of the wiring device plate 10 is parallel to the horizontal plane (that is, in the horizontal direction). Of course, the wiring device plate 10, the mounting frame 4, and the wiring device 5 may be installed on the construction surface A1 in such a manner that the length direction of the wiring device plate 10 is orthogonal to the horizontal plane (that is, in the longitudinal direction).

[0038] The wiring device plate 10 has a first plate 1, a second plate 2, and a third plate 3. In the present embodiment, the first plate 1, the second plate 2, and the third plate 3 are combined together by combining the first plate 1 and the second plate 2, and combining the first plate 1 and the third plate 3. In addition, in the present embodiment, the first plate 1, the second plate 2, and the third plate 3 are all formed of the same resin (for example, a thermoplastic resin such as PC (Polycarbonate), ABS resin, or ASA resin). Of course, the first plate 1, the second plate 2, and the third plate 3 may be formed of different resins. In addition, the first plate 1, the second plate 2, and the third plate 3 may be formed of materials other than the above-mentioned resins.

[0039] The first plate 1 is formed into a rectangular frame shape that is long in the left-right direction when viewed from the front, and has a first opening window 11 that is long in the left-right direction. The first opening window 11 penetrates the first plate 1 along the front-back direction. In addition, the first plate 1 has a pair of first longitudinal pieces 12 that are opposite to each other in the left-right direction across the first opening window 11, and a pair of first transverse pieces 13 that are opposite to each other in the up-down direction across the first opening window 11. The pair of first longitudinal pieces 12 connects the two ends in the left-right direction of the upper first transverse piece 13 of the pair of first transverse pieces 13 and the two ends in the left-right direction of the lower first transverse piece 13. In other words, the first plate 1 is formed to surround the first opening window 11 using a pair of first longitudinal pieces 12 and a pair of first transverse pieces 13. In the following description, it is assumed that the pair of first transverse pieces 13 also includes a connecting portion connected to the pair of first longitudinal pieces 12. That is, in the present embodiment, the up-down dimensions of the pair of first longitudinal pieces 12 are substantially equal to the up-down dimensions of the first opening window 11 .

[0040] like Figure 5 , Figure 6As shown, the first plate 1 is formed so that the front surface is closer to the rear edge as it approaches the two end edges in the up-down direction. Specifically, a pair of first longitudinal pieces 12 are formed in a manner substantially parallel to a plane orthogonal to the front-back direction (in other words, the construction surface A1). On the other hand, the first transverse piece 13 on the upper side is formed so as to bend closer to the construction surface A1 as it approaches the upper end edge of the first plate 1. In addition, the first transverse piece 13 on the lower side is formed so as to bend closer to the construction surface A1 as it approaches the lower end edge of the first plate 1.

[0041] like Figure 7 , Figure 8 As shown, a protruding wall 15 protruding rearward is integrally formed on the rear surface of the first plate 1. In other words, the first plate 1 has a protruding wall 15 protruding rearward from the rear surface of the first plate 1. The protruding wall 15 is provided to extend along the outer peripheral edge of the first plate 1 and to cover the entire circumference. The protruding wall 15 is formed with a size that can accommodate the third plate 3 in the inner area surrounded by the protruding wall 15 when viewed from the rear. In addition, the protruding wall 15 is formed with a size that can be accommodated in the inner area of ​​the second opening window 21 of the second plate 2 when viewed from the rear.

[0042] like Figure 8 As shown, a plurality of rectangular mounting recesses 151 are provided on the protruding wall 15. Two mounting recesses 151 are provided on each of the upper and lower walls of the protruding wall 15, and one mounting recess 151 is provided on each of the left and right walls of the protruding wall 15. The mounting recesses 151 provided on the upper and lower walls of the protruding wall 15 penetrate the upper and lower walls in the up-down direction. In addition, the mounting recesses 151 provided on the left and right walls of the protruding wall 15 penetrate the left and right walls in the left-right direction. The plurality of mounting recesses 151 are provided at the following positions, namely: in a state where the first plate 1 and the second plate 2 are combined with each other, the plurality of mounting protrusions 25 (to be described later) of the second plate 2 are respectively embedded in the plurality of mounting recesses 151 (refer to Fig. 9 ).

[0043] In addition, if Figure 8As shown, a first recess 152 is provided in the left wall of the protruding wall 15. The first recess 152 is the rear end edge of the left wall of the protruding wall 15, and is formed in a rectangular shape that is recessed forward in the central part in the up-down direction. The first recess 152 is provided at the following position: when the first plate 1 and the third plate 3 are combined with each other, the first limiting portion 361 of the protrusion 36 (to be described later) of the third plate 3 is embedded in the first recess 152. That is, the protruding wall 15 has the first recess 152 that is provided at a position on the left side (one side) of the first opening window 11 in the left-right direction (the first direction orthogonal to the front-back direction) and is recessed forward. Moreover, the third plate 3 has the protrusion 36 (the first limiting portion 361) located on the inner side of the first recess 152. In this structure, when the first plate 1 and the third plate 3 are combined with each other, the convex portion 36 is located inside the first concave portion 152, so that the first plate 1 and the third plate 3 can be restricted from moving in the short-side direction (up-down direction). Therefore, in this structure, the first plate 1 and the third plate 3 are not easily misaligned with each other.

[0044] like Figure 7 , Figure 8 As shown, a plurality of hooking protrusions 16 are integrally formed on the rear surface of the first plate 1. A hooking protrusion 16 is provided near each of the four corners of the first opening window 11, and the hooking protrusion 16 is formed in a shape protruding rearward. The plurality of hooking protrusions 16 are configured to be hooked on the edges of the plurality of mounting holes 34 (to be described later) when they are respectively inserted into the plurality of mounting holes 34 of the third plate 3.

[0045] like Figure 8 As shown, a plurality of ribs 17 are integrally formed on the rear surface of the first plate member 1. A pair of ribs 17 is provided on each side in the left-right direction across the first opening window 11, and the ribs 17 are formed in a shape protruding toward the rear. The front-to-back direction dimensions of the plurality of ribs 17 are smaller than the front-to-back direction dimensions of the plurality of hook protrusions 16. The plurality of ribs 17 are configured to contact the front surface of the third plate member 3 when the first plate member 1 and the third plate member 3 are combined with each other. That is, the plurality of ribs 17 have the following function, namely, to set a certain gap between the first plate member 1 and the third plate member 3 when the first plate member 1 and the third plate member 3 are combined with each other.

[0046] like Figure 8As shown, a plurality of positioning protrusions 18 are integrally formed on the rear surface of the first plate 1. A pair of positioning protrusions 18 are provided along the left and right side edges of the first plate 1, and a positioning protrusion 18 is provided along the upper and lower side edges of the first plate 1. The positioning protrusions 18 are formed in a shape protruding toward the rear. The plurality of positioning protrusions 18 are provided at the following positions, that is, when the first plate 1 and the second plate 2 are combined with each other, the plurality of positioning protrusions 18 are respectively embedded in the plurality of positioning recesses 27 (to be described later) of the second plate 2.

[0047] The second plate 2 is formed into a rectangular frame shape that is long in the left-right direction when viewed from the front, and has a second opening window 21 that is long in the left-right direction. The second opening window 21 penetrates the second plate 2 in the front-back direction. When viewed from the front, the second plate 2 is larger than the first plate 1 (see FIG. Figure 2 ). In addition, when observed from the front, the second opening window 21 is larger than the first opening window 11. The second plate 2 has a pair of second longitudinal pieces 22 that are opposite to each other in the left-right direction across the second opening window 21 and a pair of second transverse pieces 23 that are opposite to each other in the up-down direction across the second opening window 21. The pair of second longitudinal pieces 22 connects the two ends in the left-right direction of the second transverse piece 23 on the upper side of the pair of second transverse pieces 23 and the two ends in the left-right direction of the second transverse piece 23 on the lower side. In other words, the second plate 2 is formed to surround the second opening window 21 using a pair of second longitudinal pieces 22 and a pair of second transverse pieces 23. In the following description, it is assumed that the pair of second transverse pieces 23 also includes a connecting portion connected to the pair of second longitudinal pieces 22. In other words, in the present embodiment, the up-down dimensions of the pair of second longitudinal pieces 22 are substantially equal to the up-down dimensions of the second opening window 21.

[0048] like Figure 5 , Figure 6 As shown, the second plate 2 is formed so that the dimension (thickness) in the front-to-back direction becomes smaller as it approaches the two end edges in the up-down direction. Specifically, a pair of second longitudinal pieces 22 are formed in a manner substantially parallel to a plane orthogonal to the front-to-back direction (in other words, the construction surface A1). On the other hand, the second transverse piece 23 on the upper side is formed so that the dimension (thickness) in the front-to-back direction becomes smaller as it approaches the upper end edge of the second plate 2. In addition, the second transverse piece 23 on the lower side is formed so that the dimension (thickness) in the front-to-back direction becomes smaller as it approaches the lower end edge of the second plate 2.

[0049] Here, the front surface of the second plate 2 is flush with the front surfaces of the pair of second longitudinal pieces 22. In addition, as described above, the pair of second longitudinal pieces 22 are formed substantially parallel to the construction surface A1. That is, in this embodiment, the front surface of the second plate 2 is formed flat in the left-right direction.

[0050] In addition, the front-to-back dimension of a pair of second longitudinal pieces 22 of the second plate 2 is larger than the front-to-back dimension of a pair of first longitudinal pieces 12 of the first plate 1. In other words, the front-to-back dimension (thickness) of the short side (second longitudinal piece 22) of the outer periphery 24 (to be described later) of the second plate 2 is thicker than the front-to-back dimension (thickness) of the short side (first longitudinal piece 12) of the outer periphery of the first plate 1. In this structure, the strength of the second plate 2 can be improved by thickening the thickness of the short side of the outer periphery 24 of the second plate 2. In addition, in this structure, even if the thickness of the short side of the outer periphery 24 of the second plate 2 is thickened, the appearance does not change much, so it is still possible to expect the effect that the wiring device plate 10 is easy to look thinner. The effect that the wiring device plate 10 is easy to look thinner is described in detail in the item "(4) Effect".

[0051] like Figure 3 , Fig. 9 As shown, the second plate 2 has a plurality of mounting protrusions 25. Specifically, one mounting protrusion 25 is provided on each of the pair of second longitudinal pieces 22, and two mounting protrusions 25 are provided on each of the pair of second transverse pieces 23. The mounting protrusion 25 of the second longitudinal piece 22 provided on the left side protrudes to the right from the inner peripheral edge of the second longitudinal piece 22 on the left side. The mounting protrusion 25 of the second longitudinal piece 22 provided on the right side protrudes to the left from the inner peripheral edge of the second longitudinal piece 22 on the right side. In addition, a pair of mounting protrusions 25 provided on the second transverse piece 23 on the upper side protrude downward from the inner peripheral edge of the second transverse piece 23 on the upper side, respectively. A pair of mounting protrusions 25 provided on the second transverse piece 23 on the lower side protrude upward from the inner peripheral edge of the second transverse piece 23 on the lower side, respectively.

[0052] The plurality of mounting recesses 151 of the first plate 1 are provided at such positions that, when the first plate 1 and the second plate 2 are combined with each other, the plurality of mounting protrusions 25 of the second plate 2 are respectively embedded in the plurality of mounting recesses 151 of the first plate 1. That is, one of the protruding wall 15 and the second plate 2 (here, the second plate 2) has the mounting protrusion 25 protruding in the direction orthogonal to the front-rear direction. In addition, the other of the protruding wall 15 and the second plate 2 (here, the protruding wall 15) has the mounting recess 151 for the mounting protrusion 25 to be arranged inside. In this structure, compared with a structure in which the first plate 1 and the second plate 2 are combined with each other in the front-rear direction, the strength against the external force acting on the wiring device plate 10 in the front-rear direction can be improved. Therefore, in this structure, the stability of the wiring device plate 10 during use can be improved. On the contrary, if the first plate 1 and the second plate 2 are connected to each other in the front-to-back direction, a portion with a smaller dimension (thickness) in the front-to-back direction will be generated because a groove recessed toward the front is required to be provided in the first plate 1 or a groove recessed toward the back is required to be provided in the second plate 2. In this case, there is a possibility that the strength of the first plate 1 or the second plate 2 is reduced.

[0053] In addition, if Fig. 10A , Fig. 10B As shown, the second recess 26 is provided on the second longitudinal piece 22 on the left side. The second recess 26 is formed in a rectangular shape that is recessed forward at the rear end edge of the second longitudinal piece 22 on the left side and in the central part in the up-down direction. In addition, the second recess 26 faces the first recess 152 when the first plate 1 and the second plate 2 are combined with each other. Moreover, the second recess 26 is provided at the following position, that is, when the first plate 1, the second plate 2 and the third plate 3 are combined together, the second limiting portion 362 (to be described later) of the protrusion 36 of the third plate 3 is embedded in the second recess 26. That is, the second plate 2 has the second recess 26 that is provided at a position opposite to the first recess 152 and is recessed forward. Moreover, the protrusion 36 (the second limiting portion 362) is located on the inner side of the second recess 26. In this structure, when the second plate 2 and the third plate 3 are combined with each other, the convex portion 36 is located inside the second concave portion 26, so that the movement of the second plate 2 and the third plate 3 in the short-side direction (up-down direction) can be restricted. Therefore, in this structure, it is difficult for the second plate 2 and the third plate 3 to be misaligned with each other. In addition, in this structure, for example, by inserting a tool such as a flat-blade screwdriver or a fingernail between the convex portion 36 and the bottom of the second concave portion 26, the third plate 3 can be easily removed from the second plate 2 using the principle of leverage.

[0054] In addition, the up-down dimension of the second recess 26 is smaller than the up-down dimension of the first recess 152. In other words, in the second direction (up-down direction) orthogonal to the front-rear direction and the first direction (left-right direction), the dimension of the second recess 26 is smaller than the dimension of the first recess 152. In this structure, by making the width dimension (up-down dimension) of the portion (first limiting portion 361) of the protrusion 36 embedded in the first recess 152 larger, the strength of the protrusion 36 can be ensured. In addition, in this structure, by making the width dimension (up-down dimension) of the portion (second limiting portion 362) of the protrusion 36 embedded in the second recess 26 smaller, the portion exposed to the outside can be made smaller, so that it is difficult to damage the appearance of the wiring device plate 10.

[0055] In addition, if Figure 3 As shown, a plurality of positioning recesses 27 are provided on the second plate 2. A pair of positioning recesses 27 are provided on each of the pair of second longitudinal pieces 22, and a positioning recess 27 is provided on each of the pair of second transverse pieces 23, and the positioning recesses 27 are recessed toward the rear. The plurality of positioning recesses 27 are provided at the following positions, that is, when the first plate 1 and the second plate 2 are combined with each other, the plurality of positioning protrusions 18 of the first plate 1 are respectively embedded in the plurality of positioning recesses 27.

[0056] The third plate member 3 is formed into a rectangular frame shape that is long in the left-right direction when viewed from the front, and has a third opening window 31 that is long in the left-right direction. The third opening window 31 penetrates the third plate member 3 along the front-back direction. In addition, the third plate member 3 has a pair of third longitudinal pieces 32 that are opposite to each other in the left-right direction across the third opening window 31, and a pair of third transverse pieces 33 that are opposite to each other in the up-down direction across the third opening window 31. The pair of third longitudinal pieces 32 connects the two end portions in the left-right direction of the upper third transverse piece 33 of the pair of third transverse pieces 33 and the two end portions in the left-right direction of the lower third transverse piece 33. In other words, the third plate member 3 is formed to surround the third opening window 31 using a pair of third longitudinal pieces 32 and a pair of third transverse pieces 33.

[0057] like Figure 7 , Figure 8 As shown, a plurality of mounting holes 34 are provided on the third plate 3. One mounting hole 34 is provided near each of the four corners of the third plate 3, and the mounting holes 34 penetrate the third plate 3 in the front-rear direction. The plurality of mounting holes 34 are provided at positions such that, when the first plate 1 and the third plate 3 overlap each other, the plurality of mounting holes 34 are respectively opposite to the plurality of hooking protrusions 16 of the first plate 1.

[0058] like Figure 7 , Figure 8As shown, a pair of circular threaded holes 35 are provided on the third plate 3. The pair of threaded holes 35 are provided one each at the central portion in the up-down direction of the pair of third longitudinal pieces 32, and penetrate the third longitudinal pieces 32 along the front-back direction. The pair of threaded holes 35 are provided at the following positions: when the third plate 3 and the mounting frame 4 are overlapped with each other, the pair of threaded holes 35 are respectively opposite to the pair of coupling holes 423 (to be described later).

[0059] like Fig. 10A , Fig. 10B As shown, the third plate 3 has a convex portion 36. The convex portion 36 is provided at the outer peripheral edge of the third longitudinal piece 32 on the left side and at the center in the vertical direction, and the convex portion 36 protrudes rearward and leftward. The convex portion 36 has a first restricting portion 361 and a second restricting portion 362.

[0060] The first limiting portion 361 protrudes rearward from the outer peripheral edge of the third longitudinal piece 32 on the left side and is formed in a rectangular shape. The first limiting portion 361 is located inside the first recess 152 of the first plate 1 when the first plate 1 and the third plate 3 are combined with each other. In addition, the vertical dimension of the first limiting portion 361 is slightly smaller than the vertical dimension of the first recess 152.

[0061] The second limiting portion 362 protrudes to the left from the rear end edge of the first limiting portion 361 and is formed in a rectangular shape. The second limiting portion 362 is located inside the second recess 26 of the second plate 2 when the first plate 1, the second plate 2, and the third plate 3 are combined. In addition, the vertical dimension of the second limiting portion 362 is slightly smaller than the vertical dimension of the second recess 26. Moreover, the vertical dimension of the second limiting portion 362 is smaller than the vertical dimension of the first limiting portion 361.

[0062] like Figure 4 As shown, the mounting frame 4 is formed into a rectangular frame shape that is long in the left-right direction and has a rectangular opening window 41. The mounting frame 4 has a pair of longitudinal pieces 42 that are opposite to each other in the left-right direction across the opening window 41, and a pair of transverse pieces 43 that are opposite to each other in the up-down direction across the opening window 41. The pair of longitudinal pieces 42 connects the two ends in the left-right direction of the upper transverse piece 43 and the two ends in the left-right direction of the lower transverse piece 43 in the pair of transverse pieces 43. In other words, the mounting frame 4 is formed so that the opening window 41 is surrounded by the pair of longitudinal pieces 42 and the pair of transverse pieces 43.

[0063] The pair of longitudinal pieces 42 each have an oblong first fixing hole 421, a pair of circular second fixing holes 422, and a circular coupling hole 423. The first fixing hole 421 is a hole that penetrates the longitudinal piece 42 in the front-to-back direction and through which a fixing screw for fixing the mounting frame 4 to an embedded box or the like passes. The pair of second fixing holes 422 are holes that penetrate the longitudinal piece 42 in the front-to-back direction and through which a fixing screw for directly mounting the mounting frame 4 on the construction surface A1 passes. The coupling hole 423 is provided so as to penetrate the longitudinal piece 42 in the front-to-back direction on a platform 424 that protrudes forward from the front surface of the longitudinal piece 42. The coupling hole 423 is a hole through which a fixing screw for fixing the wiring device plate 10 to the mounting frame 4 passes.

[0064] Each of the pair of horizontal pieces 43 has at least one pair of rectangular mounting holes 431. The mounting holes 431 penetrate the horizontal piece 43 in the vertical direction. The mounting holes 431 are holes for fixing the wiring fixture 5 to the mounting frame 4 by fitting the mounting claws 513 (described later) of the wiring fixture 5 into the mounting holes 431.

[0065] In this embodiment, each of the pair of horizontal pieces 43 has three pairs of mounting holes 431. That is, in this embodiment, the mounting frame 4 is configured to be able to mount three device bodies 51 of unit sizes described later side by side in the left-right direction. In other words, any number of wiring devices 5 in the range of 1 to 3 can be mounted on the mounting frame 4. Here, one wiring device 5 is mounted on the mounting frame 4.

[0066] The wiring device 5 is a so-called piano-key switch, such as Figure 4 As shown, the wiring device 5 has a device body 51 and a switch button 52 for operating the switch. The wiring device 5 is electrically connected in the middle of a power supply circuit that electrically connects a power source and a load (e.g., a lighting device). When the contact of the wiring device 5 is closed, power is supplied from the power source to the load, and when the contact of the wiring device 5 is disconnected, the power supply from the power source to the load is cut off.

[0067] The device body 51 is formed in a unit size that can be mounted on the mounting frame 4 to a maximum of three units, and contains parts such as a lamp, a pair of terminal boards, and contacts for opening and closing the circuit between the pair of terminal boards. In addition, a key 511 is mounted on the front of the device body 51 in a state that it can move in the front-back direction. The key 511 is configured to switch the state of the contact (open / close) each time the key 511 is pressed. The front surface of the key 511 is exposed from the device body 51 and can be pressed by the switch button 52.

[0068] A light-transmitting rectangular lampshade 512 is mounted on the upper side of the front surface of the device body 51. The lampshade 512 transmits the light emitted by the lamp housed in the device body 51 and emits the light emitted by the lamp to the outside. In this embodiment, as the lamp, for example, a light-emitting diode that emits green light when the contact is closed and a light-emitting diode that emits red light when the contact is open can be used.

[0069] The device body 51 has two pairs of mounting claws 513. A pair of mounting claws 513 is provided on each of the two side surfaces in the up-down direction of the device body 51. The device body 51 is inserted into the opening window 41 of the mounting frame 4 and the two pairs of mounting claws 513 are used to mount the device body 51 on the mounting frame 4, thereby mounting the wiring device 5 on the mounting frame 4. Specifically, the pair of mounting claws 513 located on the upper side surface of the device body 51 are respectively engaged with the pair of mounting holes 431 of the upper horizontal piece 43 of the mounting frame 4. Furthermore, the pair of mounting claws 513 located on the lower side surface of the device body 51 are respectively engaged with the pair of mounting holes 431 of the lower horizontal piece 43 of the mounting frame 4, thereby mounting the device body 51 on the mounting frame 4.

[0070] The switch button 52 is formed in a rectangular shape that is long in the left-right direction. The switch button 52 is formed in a size that can be accommodated in the first opening window 11, the second opening window 21, and the third opening window 31. In the present embodiment, the switch button 52 is a single button used when only one wiring device 5 is installed on the installation frame 4.

[0071] The switch button 52 is mounted on the device body 51 in a manner covering the front surface of the device body 51. Specifically, a pair of columnar shafts 514 are provided on the upper side of the front surface of the device body 51. The pair of shafts 514 are provided on the left and right sides of the lampshade 512. Moreover, a bearing portion for mounting the pair of shafts 514 is provided on the rear surface of the switch button 52 and at a position opposite to the pair of shafts 514 of the device body 51. By holding the pair of shafts 514 in the bearing portion, the switch button 52 can be rotated with the pair of shafts 514 as a fulcrum. In other words, the switch button 52 is configured to be rotatable with (a pair of) shafts 514 that are orthogonal to the front-rear direction as a fulcrum.

[0072] The switch button 52 has a flat portion 521 and a protruding portion 522. The front surface of the flat portion 521 is a surface substantially parallel to a plane perpendicular to the front-rear direction when the switch button 52 is not operated (see Fig.11). The protrusion 522 is provided at the lower end of the flat portion 521, and protrudes forward more than the flat portion 521 over the entire length in the left-right direction. In other words, the protrusion 522 is provided at the end of the flat portion 521 opposite to the end on the axis 514 side, and protrudes forward more than the flat portion 521 over the entire length in the direction along the axis 514. In addition, the protrusion 522 is formed in a manner that the more it goes to the lower side, that is, the closer it is to the lower edge of the switch button 52, the more it protrudes forward.

[0073] When the protrusion 522 of the switch button 52 is pushed backward, the switch button 52 rotates around the portion supported by the pair of shafts 514. Thus, by pushing the key 511 with the switch button 52, the state (open / closed) of the contact is switched.

[0074] Here, for the switch button without the protrusion 522, considering the ease of pressing, it is considered to increase the front-to-back dimension of the flat portion 521. In this case, by making the flat portion 521 protrude forward as a whole, the ease of pressing the switch button is improved, but the effect of making the wiring device assembly look thinner when viewed from the top and bottom direction or the left and right direction cannot be expected. On the other hand, in the switch button without the protrusion 522, when the front-to-back dimension of the flat portion 521 is reduced considering the effect of making the wiring device assembly look thinner, although the effect of making the wiring device assembly look thinner can be expected, it is difficult to press the switch button. In contrast, the switch button 52 of the present embodiment has the protrusion 522, so the ease of pressing the switch button 52 can be improved. In addition, in the switch button 52 of the present embodiment, since only the protrusion 522 can be made to protrude forward and the front-to-back dimension of the flat portion 521 can be reduced, the effect of making the wiring device assembly 101 look thinner can be expected.

[0075] An oblong light-transmitting portion 523 is provided on the upper side of the switch button 52 and in the center in the left-right direction. The light-transmitting portion 523 is formed by embedding a light-transmitting member inside a hole that penetrates the switch button 52 in the front-back direction. The light-transmitting portion 523 transmits the light emitted from the lampshade 512, thereby emitting the light emitted from the electric lamp to the outside.

[0076] Therefore, the user can confirm the position of the wiring device assembly 101 even in the dark by looking at the light-transmitting portion 523. In addition, the user can know the state of the contact of the wiring device 5, that is, the working state of the load, by observing the color of the light-transmitting portion 523. For example, when the light of the electric lamp is green, the light-transmitting portion 523 emits green light, so the user can know that the load is working.

[0077] (3) Assembly method and structure of wiring device panel

[0078] The wiring device plate 10 of the present embodiment is assembled as follows. It is assumed that the pair of coupling holes 423 of the mounting frame 4 and the pair of threaded holes 35 of the third plate 3 are overlapped and fastened with fixing screws respectively, so that the third plate 3 is pre-installed on the mounting frame 4. First, the user presses the second plate 2 against the first plate 1 from the rear. As a result, the multiple mounting protrusions 25 of the second plate 2 are respectively engaged with the multiple mounting recesses 151 of the first plate 1, thereby combining the first plate 1 and the second plate 2 with each other (first step). In addition, at this time, the multiple positioning protrusions 18 of the first plate 1 are respectively located in the multiple positioning recesses 27 of the second plate 2, thereby limiting the movement of the first plate 1 and the second plate 2 in the short side direction (up and down direction) and the long side direction (left and right direction) relative to each other. Moreover, at this time, the second plate 2 is located on the outside of the protruding wall 15 of the first plate 1.

[0079] Next, the user presses the first plate 1 combined with the second plate 2 against the third plate 3 from the front. As a result, the plurality of hooking protrusions 16 of the first plate 1 are respectively inserted into the plurality of mounting holes 34 of the third plate 3. Furthermore, by hooking the plurality of hooking protrusions 16 on the edges of the plurality of mounting holes 34, the first plate 1 and the third plate 3 are combined with each other (step 2). At this time, the first limiting portion 361 of the protrusion 36 of the third plate 3 is located in the first recess 152 of the first plate 1, thereby limiting the movement of the first plate 1 and the third plate 3 in the short-side direction (up-down direction) relative to each other. In addition, at this time, the third plate 3 is located on the inner side of the protruding wall 15 of the first plate 1. Furthermore, the second limiting portion 362 of the protrusion 36 of the third plate 3 is located in the second recess 26 of the second plate 2, thereby limiting the movement of the second plate 2 and the third plate 3 in the short-side direction (up-down direction) relative to each other.

[0080] As described above, the user performs the first step and the second step to combine the first plate 1 , the second plate 2 , and the third plate 3 , thereby assembling the wiring device plate 10 .

[0081] In the present embodiment, when the wiring device plate 10 is mounted on the mounting frame 4, the front surface of the wiring device 5 (here, the front surface of the switch button 52) is exposed to the outside through the first opening window 11, the second opening window 21, and the third opening window 31. That is, the first plate 1 is mounted on the wiring device 5 in such a manner that the front surface of the wiring device 5 is located on the inner side of the first opening window 11 when viewed from the front. Similarly, the second plate 2 is mounted on the wiring device 5 in such a manner that the front surface of the wiring device 5 is located on the inner side of the second opening window 21 when viewed from the front. Similarly, the third plate 3 is mounted on the wiring device 5 in such a manner that the front surface of the wiring device 5 is located on the inner side of the third opening window 31 when viewed from the front.

[0082] In this embodiment, the first plate 1 and the second plate 2 are not directly mounted on the wiring fixture 5, but are indirectly mounted on the wiring fixture 5 using the third plate 3 and the mounting frame 4. In addition, the third plate 3 is not directly mounted on the wiring fixture 5, but is indirectly mounted on the wiring fixture 5 using the mounting frame 4.

[0083] Here, if Figure 1 As shown in FIG. 1 , when the first plate 1 and the second plate 2 are combined with each other, the second plate 2 is located behind the first plate 1. Figure 2 As shown, the pair of first longitudinal pieces 12 and the pair of first transverse pieces 13 of the first plate member 1 overlap with the pair of second longitudinal pieces 22 and the pair of second transverse pieces 23 of the second plate member 2 in the front-to-back direction in a manner that covers a portion of the pair of second longitudinal pieces 22 and the pair of second transverse pieces 23 of the second plate member 2. In other words, a portion of the second plate member 2 overlaps with the first plate member 1 in the front-to-back direction.

[0084] Moreover, if Figure 2 As shown, the outer peripheral shape of the second plate 2 is larger than the outer peripheral shape of the first plate 1, so when the first plate 1 and the second plate 2 are combined with each other, when viewed from the front, the second plate 2 protrudes outwards than the first plate 1. In other words, the second plate 2 has an outer peripheral portion 24 protruding from the outer peripheral edge of the first plate 1 in a direction intersecting the front-rear direction (here, upward, downward, leftward, or rightward).

[0085] In addition, in this embodiment, if Figure 2 As shown, the peripheral portion 24 is provided over the entire circumference of the second plate 2. That is, in the present embodiment, the second plate 2 protrudes outward over the entire circumference relative to the first plate 1 when viewed from the front. In this structure, compared with a case where the peripheral portion 24 is provided intermittently along the outer periphery of the second plate 2, the appearance of the wiring device plate 10 can be improved.

[0086] Moreover, if Figure 1 , Figure 5 As shown, in a state where the first plate 1 and the second plate 2 are combined with each other, there is a step between the front surface of the outer peripheral edge of the first plate 1 and the front surface of the outer peripheral portion 24 of the second plate 2. That is, the wiring device plate 10 also has a step portion 14 constituting a step in the front-to-back direction between the outer peripheral edge of the first plate 1 and the outer peripheral portion 24 of the second plate.

[0087] Furthermore, in the present embodiment, the first plate 1 is stacked on the front surface of the second plate 2. Therefore, in the present embodiment, the dimension of the step portion 14 in the front-to-back direction is greater than or equal to the dimension of the outer periphery of the first plate 1 in the front-to-back direction. In this structure, while ensuring the strength of the first plate 1, it is expected that the wiring device plate 10 can be made to look thinner.

[0088] In addition, in this embodiment, if Fig.12 As shown, the rear end of the outer periphery of the first plate 1 is formed into a shape with rounded corners when viewed from above. Therefore, a gap 19 is provided between the outer periphery of the first plate 1 and the outer periphery 24 of the second plate 2. In other words, the wiring device plate 10 of the present embodiment has a gap 19 between the outer periphery of the first plate 1 and the outer periphery 24 of the second plate 2 in the front-to-back direction. In this structure, for example, by inserting a tool such as a flat-blade screwdriver or a fingernail into the gap 19, it is easy to remove the first plate 1 from the second plate 2 using the principle of leverage. In addition, in this structure, it is easier for the user to focus on the first plate 1 than in a case where there is no gap 19, and as a result, it can be expected that the wiring device plate 10 will be easier to look thinner.

[0089] Furthermore, when the first plate 1, the second plate 2, and the third plate 3 are combined together, the third plate 3 is covered by the first plate 1 when viewed from the front. That is, the first plate 1 is mounted on the third plate 3 in such a manner as to cover the entire area of ​​the front surface of the third plate 3. In this structure, when the first plate 1 and the third plate 3 are combined with each other, it becomes difficult for the third plate 3 to protrude rearwards than the first plate 1. That is, it is easy to accommodate the third plate 3 within the front-to-back dimension (thickness) of the first plate 1. Therefore, in this structure, the wiring device plate 10 can be easily formed thinner.

[0090] In addition, when the first plate 1, the second plate 2, and the third plate 3 are combined, the third plate 3 is located inside the second opening window 21 (see Figure 7 ). Moreover, the second plate 2 is located outside the protruding wall 15, and the third plate 3 is located inside the protruding wall 15. In other words, the protruding wall 15 is located between the second plate 2 and the third plate 3. In this structure, compared with a case where there is no protruding wall 15, the strength against the external force acting on the first plate 1 in the front-rear direction can be improved.

[0091] Moreover, if Figure 5 , Figure 6As shown, the first plate 1 is formed so that the distance between the front surface and the construction surface A1 in the front-to-back direction becomes smaller as it approaches the two end edges in the up-down direction. Specifically, a pair of first longitudinal pieces 12 are formed in a manner substantially parallel to a plane orthogonal to the front-to-back direction (in other words, the construction surface A1). On the other hand, the first transverse piece 13 on the upper side is formed so as to bend so that the distance between the front surface and the construction surface A1 in the front-to-back direction becomes smaller as it approaches the upper end edge of the first plate 1. In addition, the first transverse piece 13 on the lower side is formed so as to bend so that the distance between the front surface and the construction surface A1 in the front-to-back direction becomes smaller as it approaches the lower end edge of the first plate 1.

[0092] In addition, if Figure 5 , Figure 6 As shown, the second plate 2 is formed so that the distance in the front-to-back direction between the front surface and the construction surface A1 becomes smaller as it approaches the two end edges in the up-down direction (the first direction orthogonal to the front-to-back direction). Specifically, a pair of second longitudinal pieces 22 are formed in a manner substantially parallel to a plane orthogonal to the front-to-back direction (in other words, the construction surface A1). On the other hand, the second transverse piece 23 on the upper side is formed so as to bend so that the distance in the front-to-back direction between the front surface and the construction surface A1 becomes smaller as it approaches the upper end edge of the second plate 2. In addition, the second transverse piece 23 on the lower side is formed so that the distance in the front-to-back direction between the front surface and the construction surface A1 becomes smaller as it approaches the lower end edge of the second plate 2.

[0093] (4) Effect

[0094] The wiring device plate 10 of the present embodiment has an outer peripheral portion 24 of the second plate 2, that is, when viewed from the front, the second plate 2 protrudes outward more than the first plate 1. Therefore, for the wiring device plate 10 of the present embodiment, it is possible to perform a planar design utilizing the outer peripheral portion 24 by increasing or decreasing the protruding amount of the outer peripheral portion 24 from the first plate 1. In addition, in the wiring device plate 10 of the present embodiment, the first plate 1 and the second plate 2 overlap in the front-to-back direction. Moreover, a step portion 14 is provided between the outer peripheral edge of the first plate 1 and the outer peripheral portion 24 of the second plate 2. Therefore, in the wiring device plate 10 of the present embodiment, by increasing or decreasing the front-to-back dimension of the step portion 14 in combination with the design of the outer peripheral portion 24, it is also possible to perform a three-dimensional design utilizing the outer peripheral portion 24 and the step portion 14. Therefore, in the wiring device plate 10 of the present embodiment, the degree of freedom in design can be improved compared to a structure in which the first plate 1 and the second plate 2 are simply arranged on the same plane.

[0095] In addition, it is preferred that the wiring device plate is integrated into the surrounding environment when it is set on the construction surface, and is not too conspicuous. Therefore, it is preferred that the wiring device plate protrudes from the construction surface less, that is, the front-to-back dimension appears smaller (appears thinner). Here, the wiring device plate 10 of this embodiment is a structure in which the first plate 1 and the second plate 2 are overlapped in the front-to-back direction, so the front-to-back dimension (thickness) becomes larger, which is also considered to violate the condition of appearing thinner.

[0096] However, the wiring device plate 10 of the present embodiment has the step portion 14, so it can be expected that the wiring device plate 10 is easy to look thinner. That is, in the present embodiment, due to the presence of the step portion 14, the user is more likely to focus on the first plate 1 than the second plate 2, creating an illusion that the protrusion from the construction surface A1 is smaller, so that the wiring device plate 10 is easy to look thinner. In this way, in the wiring device plate 10 of the present embodiment, while having the advantage of increasing the degree of freedom of design, it can be expected that the wiring device plate 10 is easy to look thinner.

[0097] Moreover, in the wiring device plate 10 of the present embodiment, the first plate 1 and the second plate 2 overlap in the front-to-back direction. That is, the portion of the second plate 2 that is not covered by the first plate 1 is only the peripheral portion 24, and therefore, the portion of the second plate 2 that is blocked by the first plate 1 can be designed more freely. Therefore, in the wiring device plate 10 of the present embodiment, for example, by increasing the left-right dimension of the portion covered by the first plate 1 in the second longitudinal piece 22 of the second plate 2 without changing the protruding amount of the peripheral portion 24, the strength of the second plate 2 can be improved. Alternatively, by increasing the up-down dimension of the portion covered by the first plate 1 in the second transverse piece 23, the strength of the second plate 2 can be improved.

[0098] In addition, in the wiring device plate 10 of the present embodiment, the first plate 1 and the second plate 2 are both formed so that the closer they are to the two end edges in the first direction (up and down direction), the smaller the distance between the front surface and the construction surface A1. Therefore, when the wiring device plate 10 of the present embodiment is installed on the construction surface A1, at the junction between the first plate 1 and the construction surface A1 and at the junction between the second plate 2 and the construction surface A1, the protrusion amount of the first plate 1 and the second plate 2 from the construction surface A1 can be reduced. In other words, when the wiring device plate 10 of the present embodiment is installed on the construction surface A1, the protrusion amount of the wiring device plate 10 from the construction surface A1 can be reduced. Therefore, in the wiring device plate 10 of the present embodiment, the boundary between the wiring device plate 10 and the construction surface A1 is not easy to be conspicuous, so it can be expected that the wiring device plate 10 is easy to look thinner.

[0099] Furthermore, in the wiring device plate 10 of the present embodiment, it is difficult to generate steps at the boundary between the first plate 1 and the construction surface A1 and at the boundary between the second plate 2 and the construction surface A1, so it is difficult for external stress to act on the wiring device plate 10. That is, the wiring device plate 10 of the present embodiment can also improve the strength against external stress.

[0100] Here, the front surface of the first plate 1 is flush with the front surface of a pair of first longitudinal pieces 12. In addition, the pair of first longitudinal pieces 12 is formed in a manner substantially parallel to the construction surface A1. That is, in the present embodiment, the front surface of the first plate 1 is formed flat in the second direction (left-right direction) orthogonal to the front-back direction and the first direction (up-down direction). In addition, the front surface of the second plate 2 is flush with the front surface of a pair of second longitudinal pieces 22. Moreover, the pair of second longitudinal pieces 22 is formed in a manner substantially parallel to the construction surface A1. That is, in the present embodiment, the front surfaces of the first plate 1 and the second plate 2 are each formed flat in the second direction (left-right direction) orthogonal to the front-back direction and the first direction (up-down direction). In this structure, compared with a structure in which the outer periphery of the front surface of each of the first plate 1 and the second plate 2 is curved over the entire circumference, the first plate 1 and the second plate 2 are easy to leave an impression on the user.

[0101] In addition, if Figure 5 As shown, in the present embodiment, the front surfaces of the first plate 1 and the second plate 2 are respectively formed to be convex toward the front. Moreover, in a state where the first plate 1 and the second plate 2 are combined with each other, the front surface of the first plate 1 is curved along the front surface of the second plate 2. In this structure, the appearance can be improved compared with a structure in which the front surface of the first plate 1 is not curved along the front surface of the second plate 2. For example, if the curvature of the front surface of the first plate 1 and the curvature of the front surface of the second plate 2 are not approximately equal, the first plate 1 and the second plate 2 will lose a sense of unity, and there is a possibility that the appearance will be impaired.

[0102] In addition, in this embodiment, if Fig.13 As shown, the front end portion 2A of the outer periphery of the second plate 2 is formed into a shape with rounded corners when viewed from above. That is, the rear end portion 1A of the outer periphery of the first plate 1 and the front end portion 2A of the outer periphery of the second plate 2 both have a curvature greater than zero. In this structure, compared with the case where the rear end portion 1A of the outer periphery of the first plate 1 and the front end portion 2A of the outer periphery of the second plate 2 are sharp, it can be expected that the effect of being easy to look thinner can be expected.

[0103] In addition, in this embodiment, if Figure 6As shown, both ends of the second plate 2 in the left-right direction are formed into a shape cut along a plane obliquely rearward. Therefore, both ends of the second plate 2 in the left-right direction have end faces 28 along the oblique rearward direction, respectively. That is, both end faces of the second plate 2 in the second direction (left-right direction) that are orthogonal to the front-to-back direction and the first direction (up-down direction) face rearward. In this structure, even when the construction surface A1 is rough, when the wiring device plate 10 is installed on the construction surface A1, the gap generated between the wiring device plate 10 and the construction surface A1 is not easily noticeable, thereby improving the appearance. In addition, as Figure 7 As shown, in this embodiment, the second concave portion 26 is provided on the second longitudinal piece 22 on the left side of the second plate member 2, and the convex portion 36 is exposed to the outside from the second concave portion 26. Therefore, if the end surface 28 is facing the rear, the second concave portion 26 and the convex portion 36 are difficult to see when viewed from the front, which can improve the appearance.

[0104] (Variation Example)

[0105] In addition, in the wiring device plate 10 of the present embodiment, the reflectivity of light of the second plate 2 may be smaller than the reflectivity of light of the first plate 1. Specifically, a white coating having a relatively large reflectivity of light may be applied to the front surface of the first plate 1, and a black coating having a relatively small reflectivity of light may be applied to the front surface of the second plate 2. In this structure, the user is more likely to notice the first plate 1 than the second plate 2, and it is possible to expect an effect that the wiring device plate 10 is easier to look thinner. Of course, the colors of the first plate 1 and the second plate 2 are not limited to the combination of white and black, and may be, for example, a combination of white and silver or white and cobalt blue, or a combination of gray and silver. In addition, the colors of the first plate 1 and the second plate 2 may be, for example, a combination of shades of the same color such as white. In addition, the color is not limited to the coating, and may be, for example, the color of the first plate 1 and the second plate 2 itself.

[0106] In the present embodiment, the first plate 1, the second plate 2, and the third plate 3 are formed of independent members, but other structures may be used. For example, the first plate 1 and the second plate 2 may be formed integrally.

[0107] In the present embodiment, the protruding wall 15 is continuously formed over the entire circumference of the first plate 1 , but other structures are also possible. For example, the protruding wall 15 may have a plurality of walls, and these walls may be arranged at intervals along the outer periphery of the first plate 1 .

[0108] In the present embodiment, the wiring device 5 is a piano-type switch, but may be a so-called cabinet-type (seesaw-type) switch.

[0109] Furthermore, although the wiring device assembly 101 of the present embodiment has a configuration including only one wiring device 5 , it may also have a configuration including a plurality of wiring devices 5 .

[0110] In addition, in the present embodiment, the wiring device plate 10 is a rectangular shape when viewed from the front, but may be a square shape when viewed from the front. In addition, the wiring device plate 10 may not be a rectangular shape when viewed from the front, for example, it may be a circular shape or a polygonal shape when viewed from the front.

[0111] In addition, in the present embodiment, the first opening window 11, the second opening window 21, and the third opening window 31 are all rectangular in shape when viewed from the front, but may also be square in shape when viewed from the front. In addition, the first opening window 11, the second opening window 21, and the third opening window 31 may not be rectangular in shape when viewed from the front, and may be, for example, circular or polygonal in shape when viewed from the front. In other words, the first opening window 11, the second opening window 21, and the third opening window 31 may all be in a shape that allows the user to see the front surface of the wiring device 5 from the outside.

[0112] In addition, in the wiring device plate 10 of the present embodiment, the second plate 2 may have a recessed portion that is recessed rearward along the entire circumference of the outer peripheral edge of the second opening window 21. Furthermore, the first plate 1 may be placed on the recessed portion of the second plate 2. In this structure, the front-to-back dimension (thickness) of the wiring device plate 10 can be reduced by an amount corresponding to the front-to-back dimension of the recessed portion.

[0113] (5) Summary

[0114] As described above, the wiring device plate 10 of the first technical solution has a first plate 1 and a second plate 2. The first plate 1 has a first opening window 11 that penetrates the first plate 1 along the front-to-back direction. The second plate 2 has a second opening window 21 that penetrates the second plate 2 along the front-to-back direction, and the second plate 2 is located behind the first plate 1. The first plate 1 is mounted on the wiring device 5 in such a manner that the front surface of the wiring device 5 is located on the inner side of the first opening window 11 when viewed from the front. The second plate 2 is mounted on the wiring device 5 in such a manner that the front surface of the wiring device 5 is located on the inner side of the second opening window 21 when viewed from the front. A portion of the second plate 2 overlaps with the first plate 1 in the front-to-back direction. The second plate 2 has an outer peripheral portion 24 that protrudes from the outer peripheral edge of the first plate 1 in a direction intersecting the front-to-back direction. The wiring device plate 10 further includes a step portion 14 between the outer peripheral edge of the first plate 1 and the outer peripheral portion 24 of the second plate 2 , and the step portion 14 constitutes a step in the front-rear direction.

[0115] According to this structure, while having the advantage of improving the degree of freedom in design, it is expected that the wiring device plate 10 can be easily made to look thin.

[0116] In addition, in the wiring fixture plate 10 according to the second embodiment of the present invention, the longitudinal dimension (thickness) of the step portion 14 is greater than or equal to the longitudinal dimension (thickness) of the outer peripheral edge of the first plate 1 .

[0117] This structure can ensure the strength of the first plate 1 and make the wiring device plate 10 look thinner. However, this structure is not essential, and the front-to-back dimension of the step portion 14 may be smaller than the front-to-back dimension of the outer peripheral edge of the first plate 1.

[0118] Furthermore, in addition to the first or second aspect, the wiring fixture plate 10 according to the third aspect has a gap 19 between the outer peripheral edge of the first plate 1 and the outer peripheral portion 24 of the second plate 2 in the front-rear direction.

[0119] With this structure, the first plate 1 can be easily removed from the second plate 2 using a jig such as a flat-blade screwdriver or a fingernail. In addition, with this structure, it can be expected that the wiring device plate 10 is easy to look thinner than when there is no gap 19. However, this structure is not essential, and the wiring device plate 10 may not have the gap 19.

[0120] In addition, based on any one of the first to third technical solutions, in the wiring device plate 10 of the fourth technical solution, both the first plate 1 and the second plate 2 are rectangular in shape when viewed from the front. The thickness of the short side (second longitudinal piece 22) of the outer peripheral portion 24 of the second plate 2 in the front-to-back direction is thicker than the thickness of the short side (first longitudinal piece 12) of the outer peripheral edge of the first plate 1 in the front-to-back direction.

[0121] With this structure, by increasing the front-to-back dimension of the outer peripheral portion 24 of the second plate 2, the strength of the second plate 2 is improved, and the wiring device plate 10 can be expected to be thinner. However, this structure is not necessary, and the thickness of the short side of the outer peripheral portion 24 of the second plate 2 in the front-to-back direction may be the same as the thickness of the short side of the outer peripheral edge of the first plate 1 in the front-to-back direction or thinner than the thickness of the short side of the outer peripheral edge of the first plate 1 in the front-to-back direction.

[0122] Furthermore, based on any one of the first to fourth technical solutions, the wiring device plate 10 of the fifth technical solution further includes a third plate 3 having a third opening window 31 penetrating the third plate 3 in the front-rear direction. The third plate 3 is mounted on the wiring device 5 in such a manner that the front surface of the wiring device 5 is located inside the third opening window 31 when viewed from the front. The first plate 1 is mounted on the third plate 3 in such a manner that the entire area of ​​the front surface of the third plate 3 is covered.

[0123] With this structure, the strength of the wiring device plate 10 can be improved by combining the third plate 3 with the first plate 1 and the second plate 2. In addition, with this structure, when the first plate 1 and the third plate 3 are combined with each other, the third plate 3 is less likely to protrude rearward than the first plate 1, so it is easy to form the wiring device plate 10 thinner. However, this structure is not necessary, and the wiring device plate 10 may not have the third plate 3. In this case, it is also possible to have a structure in which the first plate 1 is directly mounted on the mounting frame 4. In addition, even in the case where the wiring device plate 10 has the third plate 3, it is also possible that the first plate 1 does not cover the entire area of ​​the front surface of the third plate 3.

[0124] Furthermore, based on the fifth technical solution, in the wiring device plate 10 of the sixth technical solution, the third plate 3 is located inside the second opening window 21. The first plate 1 has a protruding wall 15 protruding rearward from the rear surface of the first plate 1. The protruding wall 15 extends along the outer peripheral edge of the first plate 1 and is located between the second plate 2 and the third plate 3.

[0125] This structure can improve the strength against external forces acting on the first plate 1 in the front-rear direction, compared with a case without the protruding wall 15 . However, this structure is not essential, and the first plate 1 may not have the protruding wall 15 .

[0126] Furthermore, based on the sixth technical solution, in the wiring device plate 10 of the seventh technical solution, one of the protruding wall 15 and the second plate 2 has a mounting protrusion 25 protruding in a direction orthogonal to the front-rear direction. The other of the protruding wall 15 and the second plate 2 has a mounting recess 151, and the mounting protrusion 25 is located inside the mounting recess 151.

[0127] This structure can improve the strength against external forces acting on the wiring device plate 10 in the front-rear direction, and as a result, can improve the stability of the wiring device plate 10 during use. However, this structure is not essential, and the protruding wall 15 and the second plate 2 may not have the mounting protrusion 25 and the mounting recess 151.

[0128] In addition, based on the sixth or seventh technical solution, in the wiring device plate 10 of the eighth technical solution, the protruding wall 15 has a first recessed portion 152. The first recessed portion 152 is provided at a position (left side) of a pair of positions across the first opening window 11 in a first direction (left-right direction) orthogonal to the front-rear direction and is recessed forward. The third plate 3 has a convex portion 36 (first restricting portion 361), and the convex portion 36 is located inside the first recessed portion 152.

[0129] With this structure, the first plate 1 and the third plate 3 are less likely to be misaligned with each other. However, this structure is not essential, and the protruding wall 15 and the third plate 3 may not have the first concave portion 152 and the convex portion 36, respectively.

[0130] In addition, in the wiring device plate 10 of the ninth technical solution, the second plate 2 has a second recess 26. The second recess 26 is provided at a position opposite to the first recess 152 and is recessed forward. The protrusion 36 (second restricting portion 362) is located inside the second recess 26.

[0131] With this structure, it is difficult for the second plate 2 and the third plate 3 to be misaligned with each other. In addition, with this structure, it is possible to ensure that it is difficult for the first plate 1 and the third plate 3 and the second plate 2 and the third plate 3 to be misaligned with each other using one member (convex portion 36). Moreover, with this structure, it is easy to remove the third plate 3 from the second plate 2 using a tool such as a flat-blade screwdriver or a fingernail. However, this structure is not necessary, and the second plate 2 may not have the second concave portion 26.

[0132] Furthermore, based on the ninth technical solution, in the wiring device plate 10 of the tenth technical solution, the size of the second recess 26 is smaller than the size of the first recess 152 in the second direction (up and down direction) orthogonal to the front-to-back direction and the first direction (left-right direction).

[0133] This structure ensures the strength of the protrusion 36 and does not deteriorate the appearance of the wiring device plate 10. However, this structure is not essential, and the size of the second recess 26 may be the same as or larger than the size of the first recess 152 in the second direction.

[0134] Furthermore, in addition to any one of the first to tenth aspects, in the wiring device plate 10 according to the eleventh aspect, the light reflectance of the second plate 2 is lower than the light reflectance of the first plate 1 .

[0135] With this structure, the user can easily notice the first plate 1 compared to the second plate 2, and the wiring device plate 10 can be expected to be thinner. However, this structure is not necessary, and the reflectivity of light of the second plate 2 may be the same as the reflectivity of light of the first plate 1 or greater than the reflectivity of light of the first plate 1.

[0136] Furthermore, in the wiring device plate 10 according to the twelfth invention, in addition to any one of the first to eleventh inventions, the outer peripheral portion 24 is provided on the entire circumference of the second plate 2 .

[0137] This structure can improve the appearance of the wiring device plate 10 compared to a case where the peripheral portion 24 is provided intermittently along the outer periphery of the second plate 2. However, this structure is not essential, and the peripheral portion 24 may be provided intermittently along the outer periphery of the second plate 2.

[0138] Furthermore, based on any one of the first to twelfth technical solutions, in the wiring device plate 10 of the thirteenth technical solution, the wiring device 5 is installed on the construction surface A1. The first plate 1 and the second plate 2 are both formed so that the distance between the front surface and the construction surface A1 in the front-to-back direction becomes smaller as they approach the two end edges in the first direction (up-down direction) perpendicular to the front-to-back direction.

[0139] According to this structure, when the wiring fixture plate 10 is attached to the installation surface A1, the protrusion amount from the installation surface A1 can be reduced, so the wiring fixture plate 10 can be expected to have an effect of being able to easily look thin.

[0140] Furthermore, based on the thirteenth technical solution, in the wiring device plate 10 of the fourteenth technical solution, the front surfaces of the first plate 1 and the second plate 2 are respectively formed flat in the second direction (left-right direction) orthogonal to the front-back direction and the first direction (up-down direction).

[0141] With this structure, the first plate 1 and the second plate 2 are easier to leave an impression on the user than with a structure in which the outer peripheral edges of the front surfaces of the first plate 1 and the second plate 2 are curved over the entire circumference. However, this structure is not necessary, and the front surfaces of the first plate 1 and the second plate 2 may not be formed flat in the second direction. For example, the first plate 1 and the second plate 2 may be formed so that the distance between the front surface and the construction surface A1 in the front-back direction becomes smaller as they approach the two end edges in the second direction.

[0142] Furthermore, in the wiring fixture plate 10 according to a fifteenth invention in addition to the thirteenth invention or the fourteenth invention, the front surface of the first plate 1 is curved along the front surface of the second plate 2 .

[0143] This structure can improve the appearance compared with a structure in which the front surface of the first plate 1 is not curved along the front surface of the second plate 2. However, this structure is not essential, and the front surface of the first plate 1 may not be curved along the front surface of the second plate 2.

[0144] In addition, based on any one of the thirteenth to fifteenth technical solutions, in the wiring device plate 10 of the sixteenth technical solution, the rear end portion 1A of the outer periphery of the first plate 1 and the front end portion 2A of the outer periphery of the second plate 2 both have a curvature greater than zero.

[0145] With this structure, it is expected that the outer peripheral rear end 1A of the first plate 1 and the outer peripheral front end 2A of the second plate 2 are sharp, and the effect of being easy to look thinner can be expected. However, this structure is not necessary, and the outer peripheral rear end 1A of the first plate 1 and the outer peripheral front end 2A of the second plate 2 may be sharp.

[0146] In addition, based on any one of the thirteenth to sixteenth technical schemes, in the wiring device plate 10 of the seventeenth technical scheme, the two end surfaces of the second plate 2 in the second direction (left-right direction) orthogonal to the front-to-back direction and the first direction (up-down direction) face rearward.

[0147] With this structure, even if the construction surface A1 is rough with unevenness, when the wiring device plate 10 is installed on the construction surface A1, the gap between the wiring device plate 10 and the construction surface A1 is not easily noticeable, thereby improving the appearance. However, this structure is not necessary, and the two end surfaces of the second plate 2 in the second direction may be surfaces along the front-back direction and face forward. In addition, the two end surfaces of the second plate 2 in the first direction may face backward.

[0148] Furthermore, the wiring device assembly 101 according to the eighteenth invention comprises the wiring device plate 10 according to any one of the first to seventeenth inventions and the wiring device 5 to which the wiring device plate 10 is mounted.

[0149] According to this structure, it is possible to realize the wiring device assembly 101 which has the advantage of improving the degree of freedom in design and can expect the effect of making the wiring device plate 10 easy to look thin.

[0150] In addition, on the basis of the eighteenth technical solution, in the wiring device assembly 101 of the nineteenth technical solution, the wiring device 5 is a switch. The wiring device assembly 101 also has a switch button 52 for operating the switch. The switch button 52 is configured to be able to rotate with the axis 514 orthogonal to the front-to-back direction as a fulcrum. The switch button 52 has a flat portion 521 and a protrusion 522, and the protrusion 522 is provided at one end (lower end) of the flat portion 521 on the opposite side of one end on the axis 514 side. The protrusion 522 protrudes forward more than the flat portion 521 over the entire length in the direction (left-right direction) along the axis 514.

[0151] This structure can improve the ease of pushing the switch button 52, and can also be expected to make the wiring device assembly 101 look thinner. However, this structure is not essential, and the switch button 52 may be composed of only the flat portion 521, for example.

[0152] (Implementation Method 2)

[0153] Below, use Fig.14 A wiring device assembly 102 according to Embodiment 2 will be described. Since the basic structure of the wiring device assembly 102 according to this embodiment is the same as that of the wiring device assembly 101 (including modifications) according to Embodiment 1, the same reference numerals are used for the same parts and description thereof will be omitted.

[0154] like Fig.14 As shown, the wiring device assembly 102 of this embodiment is different from the embodiment 1 in that it has a wiring device 500 instead of the wiring device 5. In addition, the wiring device assembly 102 of this embodiment is different from the embodiment 1 in that it has a third plate 300 instead of the third plate 3 and the mounting frame 4. In addition, the present embodiment is different from the embodiment 1 in that only the front surface of the wiring device 500 as a socket is exposed to the outside, so the size of the first opening window 11 of the first plate 1 is smaller than the size of the first opening window 11 of the embodiment 1.

[0155] The third plate 300 is formed of, for example, a resin into a rectangular frame shape that is long in the left-right direction. In addition, the third plate 300 is formed with the same size as the mounting frame 4 of the first embodiment. The third plate 300 has a third opening window 301, a pair of third longitudinal pieces 302, a pair of third transverse pieces 303, and a plurality of (four in this case) mounting holes 304. In addition, the third plate 300 has a plurality of (two in this case) first fixing holes 305, a plurality of (four in this case) second fixing holes 306, and a plurality of groups (three in this case) of mounting portions 307. In addition, the third plate 300 has a convex portion 36, similar to the third plate 3 of the first embodiment, but illustration thereof is omitted. In addition, the size of the third opening window 301 of the third plate 300 is smaller than the size of the third opening window 31 of the first embodiment.

[0156] Here, the third plate 300 has the functions of both the third plate 3 of the first embodiment and the mounting frame 4 of the first embodiment. That is, the third opening window 301, the third vertical piece 302, the third horizontal piece 303 and the mounting hole 304 of the third plate 300 correspond to the third opening window 31, the third vertical piece 32, the third horizontal piece 33 and the mounting hole 34 of the third plate 3 of the first embodiment, respectively. In addition, the first fixing hole 305 and the second fixing hole 306 of the third plate 300 correspond to the first fixing hole 421 and the second fixing hole 422 of the mounting frame 4 of the first embodiment, respectively.

[0157] The plurality of mounting portions 307 each have a structure for mounting the wiring fixture 500 on the third plate 300. In the present embodiment, the plurality of mounting portions 307 have hooking grooves for hooking mounting claws 505 (described later) of the wiring fixture 500, but illustration thereof is omitted.

[0158] The wiring device 500 is an outlet connected to the plug of the electrical device and used to supply power to the electrical device. In the present embodiment, the wiring device 500 is a two-port type outlet with a grounding electrode and capable of being connected to two plugs at the same time. The wiring device 500 has a body formed by combining a device body 501 and a cover 502. The body accommodates parts such as a plug blade receiving member and a terminal board. A plurality of insertion holes 503 are formed on the front surface of the cover 502. By inserting the pins or plug blades of the plug of the electrical device into the above-mentioned plurality of insertion holes 503, the electrical device is electrically connected to the wiring device 500. In the present embodiment, the wiring device 500 has two groups of three insertion holes 503 in order to match a plug having a pair of power poles (L pole and N pole) and a grounding pole.

[0159] The device body 501 and the cover 502 are combined together by a rectangular frame-shaped mounting member 504 that is long in the left-right direction. The mounting member 504 has a plurality of (four in this case) mounting claws 505. Therefore, the wiring device 500 is mounted on the third plate 300 by hooking the plurality of mounting claws 505 of the mounting member 504 on the plurality of mounting portions 307 of the third plate 300, respectively.

[0160] The wiring device assembly 102 of this embodiment, like the wiring device assembly 101 of the first embodiment, can achieve an advantage of improving the degree of freedom in design and can also expect the effect of making the wiring device plate 10 look thinner.

[0161] In addition, the wiring device 500 is not limited to a two-port type socket. For example, the wiring device 500 can be a single-port type socket or a socket that can be connected to multiple plugs. In addition, the number of wiring devices 500 installed on the third plate 300 is not limited to one, and can also be two or more.

[0162] (Implementation method 3)

[0163] Below, use Fig.15 A wiring device assembly 103 according to Embodiment 3 will be described. The wiring device assembly 103 according to this embodiment has the same basic structure as the wiring device assembly 101 according to Embodiment 1 (including modifications), and therefore, the same reference numerals are used for the same parts and description thereof is omitted.

[0164] like Fig.15 As shown, the wiring device assembly 103 of the present embodiment is different from that of the embodiment 1 in the shape of the mounting frame 4. Furthermore, the wiring device assembly 103 of the present embodiment is different from that of the embodiment 1 in that it has a wiring device 500 in addition to the wiring device 5. Furthermore, the wiring device 5 is different from the embodiment 1 in that it has a switch button 53 instead of the switch button 52. Furthermore, the wiring device 500 is different from the embodiment 2 in that it is a single-port type socket. Furthermore, the wiring device 500 has a decorative cover 54 for a single-port type socket. The decorative cover 54 has an opening window 541. The opening window 541 penetrates the decorative cover 54 in the front-to-back direction so that the front surface of the wiring device 500 is exposed to the outside.

[0165] The central parts of a pair of horizontal pieces 43 of the mounting frame 4 in the left-right direction are connected to each other by a connecting piece 44. The opening window 41 is divided into a first opening part 411 and a second opening part 412 in the left-right direction by the connecting piece 44. In the present embodiment, the front surface of the wiring device 5 is located at the first opening part 411, and the front surface of the wiring device 500 is located at the second opening part 412. A mounting part 45 is provided on the inner peripheral edge of the upper horizontal piece 43 facing the second opening part 412. Similarly, a mounting part 45 is provided on the inner peripheral edge of the lower horizontal piece 43 facing the second opening part 412. These mounting parts 45 have the same function as the mounting part 307 of Embodiment 2. That is, the wiring device 500 is mounted on the mounting frame 4 by hooking the plurality of mounting claws 505 of the mounting piece 504 on the plurality of mounting parts 45 of the mounting frame 4, respectively.

[0166] The switch button 53 is a three-purpose button used when three wiring devices 5 are mounted on the mounting frame 4. The switch button 53 has a flat portion 531, a protruding portion 532, and a light-transmitting portion 533. The flat portion 531, the protruding portion 532, and the light-transmitting portion 533 correspond to the flat portion 521, the protruding portion 522, and the light-transmitting portion 523 of the switch button 52 of the first embodiment, respectively.

[0167] The wiring device assembly 103 of this embodiment, like the wiring device assembly 101 of the first embodiment, can achieve an advantage of improving the degree of freedom in design and can also achieve an effect of making the wiring device plate 10 look thinner.

[0168] In addition, the number of the wiring fixtures 500 mounted on the mounting frame 4 is not limited to one, but may be plural. In addition, the number of the wiring fixtures 5 mounted on the mounting frame 4 is not limited to one, but may be plural.

[0169] Here, in the above-mentioned embodiments 1 to 3, the wiring device 5, 500 is not limited to indoor use, and may be an outdoor device used outside a building. In addition, the wiring device 500 may not have a grounding electrode, for example, it may be a socket for AC 100V or DC. Moreover, the wiring device 500 is not limited to a socket suitable for type A and type C plugs, for example, it may be a socket connected only to type A plugs, or a socket that can be connected to type B, type BF, type C, type O, etc. plugs.

[0170] Furthermore, the wiring device 5, 500 is not limited to the above-mentioned switch and socket, and may be, for example, a human sensor or a timer, etc. Moreover, the wiring device 5, 500 may be a combination of two or more functions of a socket, a switch, a human sensor, a timer, etc., such as a socket with a human sensor.

[0171] In addition, the wiring device 5, 500 is not limited to a structure in which the rear portion is buried in the wall (buried type), but can also be a structure in which the entirety is exposed and is set on the wall (exposed type). In addition, the installation frame 4 is not limited to a structure fixed to an embedded box, and can also be a structure installed on the construction surface A1 using clamping accessories, etc.

[0172] The wiring device plate 10 and wiring device assemblies 101 to 103 of embodiments 1 to 3 are described above. However, the embodiments 1 to 3 described above are only one of various embodiments of the present invention. As long as the purpose of the present invention can be achieved, the above-mentioned embodiments 1 to 3 (including modified examples) can be modified in various ways according to design, etc.

Claims

1. A wiring device plate, characterized in that: The wiring device plate has: a first plate member made of resin, having a first opening window penetrating the first plate member in the front-rear direction; and A second plate made of resin having a second opening window penetrating the second plate in the front-rear direction, The second plate has an outer peripheral portion protruding from the outer peripheral edge of the first plate in a direction intersecting the front-rear direction. The first plate has a protruding wall protruding rearward from a rear surface of the first plate. The protruding wall is formed integrally with the rear surface, The protruding wall has a mounting recess, The mounting recess is arranged on a side surface of the protruding wall along the front-rear direction. The second plate has a mounting protrusion that is embedded in the mounting recess. The mounting protrusion is arranged on a side surface of the second plate along the front-rear direction. The mounting protrusion is formed integrally with the side surface.

2. The wiring fixture plate according to claim 1, wherein: The wiring device plate further comprises a third plate having a third opening window penetrating the third plate in the front-rear direction. The third plate is attached to the wiring fixture so that the front surface of the wiring fixture is located inside the third opening window when viewed from the front.

3. The wiring fixture plate according to claim 2, wherein: The first plate is mounted on the third plate in such a manner that the front surface of the wiring device is located inside the first opening window when viewed from the front. The second plate is attached to the third plate via the first plate such that the front surface of the wiring device is located inside the second opening window when viewed from the front.

4. The wiring fixture plate according to any one of claims 1 to 3, characterized in that: The light reflectivity of the second plate is lower than the light reflectivity of the first plate.

5. A wiring device assembly, characterized in that: The wiring device assembly comprises: The wiring fixture plate according to any one of claims 1 to 4; and A wiring device for mounting the wiring device plate.

6. A wiring device plate, characterized in that: The wiring device plate has: a first plate member made of resin, having a first opening window penetrating the first plate member in the front-rear direction; and A second plate made of resin having a second opening window penetrating the second plate in the front-rear direction, The second plate has an outer peripheral portion protruding from the outer peripheral edge of the first plate in a direction intersecting the front-rear direction. The first plate has a protruding wall protruding rearward from a rear surface of the first plate. The protruding wall is formed integrally with the rear surface, The protruding wall is formed with a size that can be accommodated in the inner area of ​​the second opening window of the second plate when viewed from the rear. The first plate also has a positioning protrusion protruding rearward from the rear surface of the first plate. The positioning protrusion is formed integrally with the rear surface, The positioning protrusion is located at an outer side than the protruding wall. The second plate has a positioning recess into which the positioning protrusion is inserted.

7. The wiring fixture plate according to claim 6, wherein: The wiring device plate further comprises a third plate having a third opening window penetrating the third plate in the front-rear direction. The third plate is attached to the wiring fixture so that the front surface of the wiring fixture is located inside the third opening window when viewed from the front.

8. The wiring fixture plate according to claim 7, wherein: The first plate is mounted on the third plate in such a manner that the front surface of the wiring device is located inside the first opening window when viewed from the front. The second plate is attached to the third plate via the first plate such that the front surface of the wiring device is located inside the second opening window when viewed from the front.

9. The wiring fixture plate according to any one of claims 6 to 8, characterized in that: The light reflectivity of the second plate is lower than the light reflectivity of the first plate.

10. A wiring device assembly, characterized in that: The wiring device assembly comprises: The wiring fixture plate according to any one of claims 6 to 9; and A wiring device for mounting the wiring device plate.

11. A plate for a wiring device, characterized in that: The wiring device plate has: A first plate having a first opening window penetrating the first plate in a front-to-rear direction; a second plate member having a second opening window penetrating the second plate member in a front-to-rear direction; as well as a third plate member having a third opening window penetrating the third plate member in the front-rear direction, The first plate has a protruding wall protruding rearward from a rear surface of the first plate. The protruding wall is provided to extend along the outer peripheral edge of the first plate and to cover the entire circumference. The protruding wall is formed with a size that can be accommodated in the inner area of ​​the second opening window of the second plate when viewed from the rear. The protruding wall is formed to have a size that allows the third plate to be accommodated in an inner area surrounded by the protruding wall when viewed from the rear. The second plate has an outer peripheral portion protruding from the outer peripheral edge of the first plate in a direction intersecting the front-rear direction.

12. The wiring fixture plate according to claim 11, wherein: The light reflectivity of the second plate is lower than the light reflectivity of the first plate.

13. A wiring device assembly, characterized in that: The wiring device assembly comprises: The wiring device plate according to claim 11 or 12; and A wiring device for mounting the wiring device plate.

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