JPH0152965B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a wiring device, such as a power outlet,
This invention relates to a wiring device for attaching a wiring device such as a switch to a building surface such as a wall using an insulating support, and to a structure in which the insulating support for attaching the device body to the building surface can be confirmed from the outside of the device body.

[Technical background of the invention and its problems]

Conventionally, this type of wiring device has a structure in which the wiring device body is attached via a metal support to a metal embedded box that is embedded and fixed in a construction surface such as a wall, but in this conventional structure, something is attached to the embedded box. If this happens, the support that supports the device body could become charged via the fastening screw that secures this support to the implant box. For this reason, supports molded from insulating materials have recently come to be used instead of metal supports. However, the use of this insulating support has the disadvantage that it cannot be discerned from the outside.

For this reason, a structure has been proposed in which a protrusion is provided on the front surface of the insulating support, which can be seen through a viewing hole formed in the instrument body, as described in Japanese Patent Application Laid-open No. 55-66877. However, with this structure, the support requires protrusions that protrude to the front, making it impossible to use conventional insulating supports, and the protrusions protruding from the front of the supports get in the way, making it impossible to stack them, and they break easily, making them difficult to handle. Moreover, the tightening condition of the mounting screws attached to the main body of the insulating support device cannot be confirmed from the outside.

[Purpose of the invention]

The present invention addresses the above-mentioned drawbacks, and allows wiring that allows the use of the insulating support and the tightening state of the mounting screws to be easily confirmed from the outside without changing the structure or shape of the conventional insulating support. It provides equipment.

[Summary of the invention]

The present invention focuses on the fact that the insulating support approaches the instrument body by tightening the mounting screw that attaches the instrument body to the insulating support. an insulating support having a mounting protrusion into which a mounting screw is screwed, and an insulating support provided with a mounting hole for mounting to a construction surface on the inside of the protrusion; a recess is formed around the mounting hole of the instrument body; A transparent part is formed in this recess to see through the mounting protrusion of the support, and when the mounting screw is tightened, the back of the instrument body approaches the front of the support, and the transparent part shows the presence of the support and the tightened state of the mounting screw. It is made so that it can be visually recognized.

[Embodiments of the invention]

The structure of one embodiment of the present invention will be explained with reference to the drawings.

Reference numeral 1 denotes an instrument main body molded from synthetic resin, and the main body 1 has a plate portion 2 and a hollow bulging portion 3 that bulges forward from the plate portion 2 and is open at the bottom. An outlet body 4 is installed in this bulging portion 3, and the plug blade insertion hole of this outlet body 4 is connected to the lower opening 5 of the main body 1.
is being forced to face Also, the bulging portion 3 of this main body 1
Attachment holes 6 and 7 are formed in the upper part of the plate part 2 and the lower part of the plate part 2, respectively. Further, a recess 8 _a is formed on the front surface of the plate portion 2 of the instrument body 1 around the mounting hole 7, and a hole-shaped transparent portion 8 is formed in the recess 8 _a .

Further, a hood 9 is provided in the lower opening 5 of the main body 1.

Next, 10 is a packing molded from soft vinyl chloride resin, etc., and a groove 12 is formed on the front periphery of this packing 10, into which a stepped edge 11 formed on the back side periphery of the main body 1 is fitted. ing.
Further, a projecting edge 14 is formed on the periphery of the back surface of the packing 10 facing the construction surface 13. Furthermore, a through hole 15 is formed in the upper part of this packing 10 in correspondence with the upper mounting hole 6 of the main body 1, and ribs 16 are located at the lower side of this through hole 15 and protrude from both sides. An opening 17 is formed from the bottom of the rib 16 to the lower end.

Next, reference numeral 18 denotes an insulating support having an opening 38 in the center, which is molded of synthetic resin to a size that fits into the ridge 14 of the packing 10, and the main body 1 is attached to the upper and lower front surfaces of the support 18. holes 6,7
Mounting protrusions 19 and 20 are formed corresponding to the positions of , and screw through holes 23 and 24 are formed in these protrusions 19 and 20, respectively, through which mounting screws 21 and 22 inserted through the mounting holes 6 and 7 are inserted. This screw through hole 23,
Nuts 27 and 28 are provided on the rear side of 24 to tighten and screw together the mounting screws 21 and 22, respectively.

Also, mounting holes 31 and 32 for fixing screws 29 and 30 are formed in this support 18 near the inside of the mounting protrusions 19 and 20, respectively, and the fixing screws 29 and 30 inserted through these mounting holes 31 and 32, respectively, are attached to the construction surface 13. The support 18 is attached to the construction surface 13 by screwing into screw holes 36 and 37 of an embedded box 35 embedded and fixed therein.

Next, the operation of this embodiment will be explained.

Fixing screws 29 and 30 inserted through attachment holes 31 and 32 are screwed into screw holes 36 and 37 to fix the insulating support 18 to the construction surface 13 or the box 35 embedded and fixed to the construction surface 13. Next, the electric wire drawn out from the opening 38 of the support 18 is connected to the terminal portion of the outlet body 4 inside the main body 1 through the opening 17 of the packing 10. Then Patsuking 10
The support 18 is brought into contact with the projecting edge 14 of the construction surface 13.
Then, the stepped edge 11 is packed 10
Mounting screws 21 and 22 inserted through the mounting holes 6 and 7 of the main body 1, respectively, which are engaged with the grooves 12 on the front surface of the
are inserted into the nuts 27 and 28 through the screw through holes 23 and 24 of the mounting protrusions 19 and 20 of the support 18, thereby fixing the main body 1. This lower mounting screw 22
By tightening, the main body 1 approaches the front surface of the support 18, and the see-through section 8 approaches the mounting protrusion 20 of the support 18, allowing the see-through section 8 to visually check the tightening state of the mounting screw 22 and to prevent the use of the support 18. Can be distinguished.

Although the above embodiments have been described with reference to an electrical outlet, the present invention is not limited to electrical outlets and can be applied to various wiring devices such as switches and terminal terminals.

Note that although the transparent portion 8 of the main body 1 is formed in the shape of a hole, it may be formed as a notch or may be formed of a transparent material.

〔Effect of the invention〕

According to the present invention, a see-through portion through which the mounting protrusion of the support can be seen is formed in the recess formed around the mounting hole of the instrument body, so that when the mounting screw is tightened, the instrument body approaches the support, and the see-through portion supports the support. Since the transparent part is formed in a recessed part and is formed in a part where the wall thickness of the instrument body is thin, the tightening condition of the mounting screw can be easily checked from the outside of the main body, and the insulating support can be easily checked. The use can be identified from the outside of the main body, and since the transparent part is located in the recess, the transparent part is not noticeable, improving the appearance, and unlike conventional devices, there is no need to use a special support using identification protrusions. It is possible to use conventional insulating supports as is, and can be obtained at low cost.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a wiring device showing an embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view of the same when the insulating support and the instrument main body are separated, and FIG. 3 is a plan view of the same. DESCRIPTION OF SYMBOLS 1... Instrument main body, 6, 7... Mounting hole of instrument main body 1, 8... Transparent part, 8 _a ... Recessed part, 18... Insulating support, 19, 20... Mounting protrusion, 21, 22
...Mounting screw, 31, 32...Insulation support 18
mounting hole.

Claims (1)

[Claims] 1. An insulating support that has an instrument body with a mounting hole formed therein, a mounting protrusion into which a mounting screw inserted through the attachment hole of the instrument body is screwed, and a mounting hole provided inside this protrusion for attachment to a construction surface. A wiring device comprising: a recess formed around the mounting hole of the device main body; and a see-through portion through which the mounting protrusion of the support can be seen through the recess.