JP2528179Y2 - Plate frame for wiring equipment - Google Patents

Description

[Detailed description of the present invention] [Industrial application field] In the present invention, the opening surface of the embedding hole such as a wall surface is arranged on an alligator,
The present invention relates to a wiring device plate frame to which a switch, an outlet, and the like are mounted.

[Prior Art] FIG. 7 is a sectional view of a main part of a conventional plate frame main body 1 '. In order to improve the aesthetic appearance during mounting, a step is formed on a side portion so that the plate frame main body 1' is adapted to the mounting surface. 41 is provided, and the inside part is made thin throughout. However, when the thickness is thin, the strength is inferior. Therefore, as shown in FIG. 8, the front portion of the central portion is thickened to be thick. Reference numeral 6 'denotes a mounting hole for screw insertion for mounting the plate frame main body 1' on a mounting surface.

FIG. 9 shows the mounting state of the plate frame main body 1 '. A wiring device such as a switch and an outlet 3 is detachably attached to the plate frame main body, and is connected by wiring on the back side of the outlet 3. The plate frame main body 1 'is mounted on the mounting surface with screws 42 and scissors fittings 43. The screws 42 are inserted through the mounting holes 6', and the scissor fittings are used.
By screwing into the plate 43, the construction material 44 is sandwiched between the back surface of the plate frame main body 1 'and the scissors fitting 43, and the plate frame main body 1' is fixed.

[Problem to be Solved by the Invention] However, as shown in FIG. 10, when the attachment is attempted with the scissors fitting 43, the head of the screw 42 hits the fleshed portion 45, and the opening of the scissors fitting 43 decreases. , There is a problem that it becomes difficult to attach.

The present invention is provided in view of the above points,
An object of the present invention is to provide a wiring device plate frame for the purpose of improving workability and improving the appearance at the time of installation.

Means for Solving the Problems According to the present invention, a recess for allowing the head of a screw to escape when the screw is inserted obliquely into the mounting hole is communicated with the mounting hole at the front opening edge of the mounting hole. It is provided.

[Operation] Even when the screw is inserted obliquely into the mounting hole, the head of the screw is released by the recess, and the opening of the mounting bracket, for example, is increased to improve the mounting workability of the plate frame body. As well as improving the aesthetic appearance during mounting.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, the overall configuration of the plate frame main body 1 will be described.
1 to 5, as shown in FIG. 1, a plate frame main body 1 made of synthetic resin is formed in a substantially Japanese character and flat, and an opening 2 is formed at a center portion with a center piece 31 as a boundary. I have two. An outlet 3 as a wiring device is exposed to the opening 2 so that its front surface is exposed, and is detachably attached to the plate frame main body 1. The outlet 3 has a body 3a and a cover 3b connected to each other by a pair of metal assembly frames 4, and a pair of locking pieces 5 are formed from side end surfaces of the assembly frame 4, respectively. In addition, outlet 3
A switch may be used instead of. The outlet 3 has a size corresponding to one standardized wiring appliance module, and the opening 2 of the plate frame main body 1 has a size to which three outlets 3 can be attached. Therefore, a total of six outlets 3 can be attached to the plate frame main body 1.

The plate frame main body 1 is installed in front of an opening surface of an embedding box buried in a wall surface or the like. Holes 6 and 7 are respectively formed. A movable portion 34 is formed on both sides of the plate frame main body 1 as described later,
The fixing part 33 is formed on the base 31.

First, the movable section 34 will be described. Plate frame body 1
In the side pieces 8 on both sides, the inner piece 9 and the outer piece 10 are integrally formed in parallel with a gap therebetween. In the gap between the side pieces 9 and 10, a flexible bending piece 11 whose upper and lower ends are integrated with the plate frame body 1 is formed. At two places on both sides of the bending piece 11, the inner surfaces of the both sides pieces 9 and 10 are connected by bridging pieces 12 and 13. A slit 14 is formed in the outer piece 10 to form a thin piece 15 having a thinner inner portion, and the bridging piece 12 is coupled to the thin piece 15 to make the flexible piece 11 bend easily. The bending piece 11 is formed so as to bend in the lateral direction as shown by the arrow in FIG. Therefore, since the bending piece 11 has only a lateral displacement, a structure in which the bending piece 11 has rigidity can be easily obtained.

As shown in FIG. 2 as viewed from the rear side, three sets of a pair of recesses 16 are formed on the inner surface of the bending piece 11, and as shown in FIG. Locking piece 5 of outlet 3
Is a step 17 to be locked. The rear end of the bending piece 11 is formed to protrude rearward from the outer piece 10, and the step 17 is formed rearward than the outer piece 10.

Next, the fixing portion 33 will be described. As shown in FIGS. 3 (d) and 4, a fixing rib 19 is integrally formed on the back surface of the central piece 31 of the plate frame main body 1. On both sides of the central piece 31, the following configuration is made corresponding to each opening 2. Since both surfaces of the fixing rib 19 are formed symmetrically, only one surface will be described. A recess 20 that penetrates the front and rear is formed on the fixing rib 19 side, and a pair of step portions 21 is provided on the back side of the recess 20.
Are formed. The step part 21 is a front plate 31a of the central piece 31.
Is formed behind the rear surface of the socket 3 to lock the locking piece 5 of the outlet 3. As shown in FIG. 4, an inclined surface 22 is formed on the back of the fixing rib 19 corresponding to the step portion 21 on the side surface, and the locking piece 5 of the outlet 3 comes into contact with the inclined surface 22. As a result, the bending piece 11 is bent outward by the other locking piece 5.

The front surface of the plate frame body 1 is recessed one step from the surroundings,
A decorative plate 23 is detachably mounted on the front surface. That is, a plurality of engaging pieces 24 are integrally provided on the back surface of the decorative plate 23, and an engaging hole 25 for engaging with the engaging pieces 24 is formed in the plate frame body 1. The decorative plate 23 has an opening window 26 for exposing the front surface of the outlet 3 having the blade insertion hole.
In this embodiment, a decorative plate 23 for one wiring device is used according to each opening 2. Therefore, it is sufficient to use the decorative plate 23 provided with the opening windows 26 corresponding to the number of wiring devices used according to the number of wiring devices used. At the four corners of the plate frame main body 1, there are locking holes for mounting a fireproof plate.
27 are drilled.

Between the pair of recesses 20 of the central piece 31 of the plate frame main body 1, an insertion hole 29 for inserting a driver 28 for releasing the outlet 3 is provided penetrating in the front-rear direction. As shown in FIG. 5, a chamfered portion 30 is formed on the inner side surface of the insertion hole 29 to increase the degree of freedom of the driver 28.

Next, an operation of attaching and detaching the outlet 3 to and from the plate frame main body 1 will be described. First, as shown in FIG. 4, one locking piece 5 of the outlet 3 is inserted and locked into the step 17 on the bending piece 11 side, and the other locking piece 5 is fitted along the inclined surface 22 of the fixing rib 19. To the front. The outlet 3 is moved toward the bending piece 11 by abutting and making contact with the inclined surface 22. Therefore, one locking piece 5 urges the bending piece 11 outward to bend. When the other locking piece 5 climbs over the inclined surface 22 and locks on the stepped portion 21, the outlet 3 returns to the inside of FIG. 17,2
The outlet 3 is attached to the plate frame main body 1 while being locked to 1 and in contact with the back surface of the plate frame main body 1. That is, one of the locking pieces 5 of the outlet 3 is first inserted into the movable piece 34 on the movable side 34 on the flexible piece 11 side, and the movable side flexible piece 11 is moved outward by the inclined surface 22 of the fixed section 33 on the fixed side. It is a structure that is pushed out and fitted. That is, the locking piece 5
The bending piece 11 on the side of the step 17 for inserting and locking the first is bent in the lateral direction, and the side of the fixing rib 19 on the side of the step 21 to be inserted later is not bent. The same applies to the installation of the outlet 3 in the other opening 2.

Next, when the outlet 3 is detached from the plate frame main body 1, the following operation is performed. That is, the driver from the front
28 is inserted into the insertion hole 29, and as shown in FIG. 5, the tip of the driver 28 abuts against the end face of the assembly frame 4 between the locking pieces 5,
Fold the driver 28 outward as shown by the dashed line in the figure. Then, the outlet 3 is urged toward the bending piece 11 side by the driver 28, and the locking piece 5 is removed from the step 22,
The outlet 3 can be easily removed from the plate frame main body 1. At this time, since the chamfered portion 30 forms a void, the degree of freedom of the driver 28 can be increased, and the driver 28 can be easily removed. Also, if the insertion hole 29 itself is enlarged to facilitate release, the strength of the central piece 31 is reduced by the size of the insertion hole 29, but the strength of the central piece 31 is reduced because only the chamfer is performed. Without this, the outlet 3 can be easily released. Where the driver 28
It is also possible to shift the outlet 3 to the bending piece 11 side by hand without using, and release it.

As described above, in the present embodiment, the movable portion 34 is formed symmetrically around the fixed portion 33 formed on the fixed rib 19, and the fixed portion 33 formed on the central piece 31 does not bend. Therefore, the fixing rib 19 can be shared. In addition, since the shape of the fixing rib 19 can be formed symmetrically on both sides, the thickness of the fixing rib 19 can be increased compared to the case where the movable part and the fixed part are separately formed on the central piece, and the strength of the central piece 31 is improved. Can be done.

As shown in the hatched portion in FIG. 3 (d), a substantially letter-shaped rib 32 is provided on the periphery of the opening 2, and the rib 32 increases the strength of the plate frame main body 1. That is, the strength of the plate frame main body 1 against the pressing of the wiring device, the tightening of the mounting screw to the embedded hole box, and the like is improved.

Next, the gist of the present invention will be described. As shown in FIG. 1, the upper and lower outer sides of the mounting hole 6 through which the screw 42 is inserted are provided with a substantially semicircular recess 6a communicating with the mounting hole 6.
Is recessed. Therefore, as shown in FIG.
When the plate frame main body 1 is fixedly mounted on the mounting surface by the screws 42 and the scissors 43 that pass through the mounting holes 6, when the screws 42 are inserted obliquely, the heads of the screws 42 escape to the recesses 6a. Thus, the scissors fitting 43 can be fully opened and attached.

The plate frame main body 1 of the above embodiment has a so-called double module size, but in the case of FIG. 6, a so-called standardized wiring device module has a size of three so-called two modules. The size of a single module is shown. Since each component is the same as in the previous embodiment, the description is omitted. Also,
Although the insertion hole 29 is not shown in FIG. 6, it may be provided.

[Effects of the Invention] As described above, the present invention allows a recess for releasing the head of a screw when the screw is inserted obliquely to the mounting hole to communicate with the mounting hole at the front opening edge of the mounting hole. Even if the screw is inserted obliquely into the mounting hole, the head of the screw is released by the recess, and the mounting of the plate frame body is enlarged, for example, by opening the scissors metal fittings. Therefore, the scissors can be attached, and the effect of improving the aesthetic appearance and the workability can be achieved at the same time.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention, FIG. 2 is a perspective view of a main part of the bending piece as viewed from the back, and FIGS.
(D) is a front view of the plate frame main body, and FIG.
Fig. 3 (a) is a broken bottom view of the A-E 'line of Fig.
FIG. 4 is a cross-sectional view and a rear view of the line F-I ′, FIG. 4 is a cross-sectional view showing an attached state of the above, FIG.
FIG. 6 is an exploded perspective view of another embodiment, FIG. 7 is a cross-sectional view of a main part of a conventional example, FIG. 8 is a cross-sectional view of a main part of the same, FIG. FIG. 10 is an enlarged sectional view of a main part of the above. 1 is a plate frame main body, 2 is an opening, 6 is a mounting hole, 6a is a recess, 23 is a decorative plate, and 42 is a screw.

Claims (1)

(57) [Scope of request for utility model registration] 1. A plate frame main body having a decorative plate mounted on a front surface, an opening for exposing a wiring device at a central portion, and an opening surface of an embedding hole screwed and fixed with an alligator screw,
Wiring device having mounting means for detachably mounting the wiring device on both sides of the opening of the plate frame main body, and mounting holes for screw insertion for mounting the plate frame main body above and below the opening. In the plate frame for use, a recess for allowing the head of the screw to escape when the screw is inserted obliquely to the mounting hole is provided at the front opening edge of the mounting hole in communication with the mounting hole. Plate frame for wiring equipment.