JPH02311113A - Plate frame for wiring instrument - Google Patents

Abstract

PURPOSE:To enable mounting even on a small burying hole by projecting size in the front and rear direction of the peripheral section of a plate frame body to a section rearer than a member on the inside and preventing a contact with a clamp face, etc., of the member on the inside. CONSTITUTION:Sire in the front and rear direction of a plate frame body 1 is formed in size larger than the sire of not only a flexible piece 11 but also a fixed rib 19, and the fixed rib 19 is not projected from the rear of the plate frame body l. The end face of the rear section of the fixed rib 19 and the rear of the plate frame body I may also be shaped in the same surface. Accordingly, when the plate frame body 1 is installed on the opening surface side of a burying hole, the fixed rib 19 is not abutted against a clamp face and the plate frame body 1 can be mounted even when the burying hole has size, into which a receptacle 3 is introduced, and is made smaller than size between the flexible piece 11 and the fixed rib 19.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a plate frame for a wiring device, which is disposed along the opening surface of an embedded hole in a wall surface, etc., and on which a switch, an outlet, etc. is attached. .

[Prior Art] Fig. 1O shows a conventional example, in which a plate frame main body 50 has a fixed rib 53 on one side and a flexible piece 51 on the movable side on the other side. An inclined surface 55 for inserting an outlet 3, which is a wiring device, is formed on the 1n cut piece 51. In this conventional example, one of the locking pieces 5 of the outlet 3 is first inserted and locked into the stepped portion 54 of the fixing tab 53 on the fixed side, and then the other locking piece 5 is inserted into the inclined surface 55 of the flexible piece 51. By abutting and running along the flexible piece 51, the flexible piece 51 is bent outward and is locked to the stepped portion 52 of the flexible piece 51.

[Problems to be Solved by the Invention] In such a conventional example, the flexible piece 51 on the movable side had two functions: a flexible structure and a structure having an inclined surface 55 for inserting an instrument. It is unreasonable,
There was a problem in that it was difficult to provide rigidity to the flexible piece 51.

Furthermore, the conventional plate frame main body 50 is formed thinly, and the fixed rib 53 and the flexible piece 5 are separated from the plate frame main body 50.
1 were both protruding from the back.

Therefore, if the dimension between the fixed rib 53 and the flexible piece 51 becomes large and the embedding hole is small, even if a wiring device is inserted, the fixed rib 53 or the flexible piece 51 will hit the mounting surface and the embedded box will not fit. There was a problem that the plate frame main body 50 could not be attached.

The present invention has been provided in view of the above-mentioned points, and has a flexible structure on the movable side and a sloped surface for inserting instruments on the fixed side, so that the functions are divided and the flexible piece on the movable side is provided with a flexible structure. It is an object of the present invention to provide a plate frame for a wiring device which has rigidity and can be installed even if the embedding hole is small.

[Means for solving the problems] The present invention forms a plate frame body that has a decorative plate attached to the front surface, has an opening in the center that exposes the wiring device, and covers the opening surface of the embedding hole. A flexible piece that is visible in the lateral direction is integrally formed on one side piece of the plate frame body in parallel with the side piece, and one locking piece that protrudes from both sides of the wiring device is attached to the flexible piece. The plate frame body forms a first stepped portion for insertion and locking, and forms an inclined surface along which the other locking piece of the wiring device comes into contact with and causes the bending piece to bend outward by one of the locking pieces. A second step portion is formed on the other side piece, and a second step portion is formed on the front side of the inclined surface to insert and lock the other locking piece that has gone over the inclined surface, and The dimension in this direction is made to protrude rearward from the inner member.

In addition, the plate frame body is capable of mounting three wiring devices each having the size of one standardized wiring device module.

Furthermore, the plate frame body is capable of mounting three wiring devices each having the size of one standardized wiring device module, for a total of six devices in parallel.

[Function] With the above configuration, one locking piece of the wiring device is locked to the first step of the flexible piece on the movable side, and the other locking piece is brought into contact with and aligned with the inclined surface on the fixed side. Then, bend the flexible piece in the horizontal direction, and when the locking piece climbs over the slope, the flexible piece returns and the picture body stopper locks on both steps, and the wiring device is attached to the plate frame body. Furthermore, the length of the peripheral part of the plate frame main body in the front-rear direction is made to protrude rearwardly from the inner member to prevent the inner member from hitting the mounting surface or the like.

In addition, by making the plate frame body into which three wiring devices of the size of one standardized wiring device module can be attached, up to three wiring devices can be attached to one plate frame body. Improves workability.

In addition, 3 wiring devices the size of one standardized wiring device module are connected in parallel for a total of 6111 units! By making the plate frame main body attachable, up to six wiring devices can be attached to one plate frame main body, improving the workability of the devices.

[Embodiments] Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3, a plate frame main body 1 made of synthetic resin is formed flat and has an opening 2 in the center. A receptacle 3 as a wiring device is detachably attached to the plate frame main body 1 with its front surface exposed through the opening 2. In the outlet socket 3, a body 3a and a cover 3b are connected by a pair of metal assembly frames 4, and a pair of locking pieces 5 are respectively protruded from the side end surfaces of the assembly frames 4. Note that a switch may be used instead of the outlet 3. This outlet 3 is the size of one standardized wiring equipment module, and the opening 2 of the plate frame body 1 is
It is sized so that it can be worn individually.

This plate frame main body 1 is installed in front of the opening surface of an embedded box embedded in a wall surface, etc., and there are long hole-shaped and circular mounting holes 6, 7 at the top and bottom of the plate frame main body 1. are drilled in each. One side piece 8 of the plate frame main body 1 is formed integrally with an inner piece 9 and an outer piece 10 in parallel with each other with a gap therebetween. A flexible piece 11 whose upper and lower ends are integrated with the plate frame body 1 is formed in the gap between the side pieces 9 and 10. This flexible piece 11 is connected to the inner surfaces of the side pieces 9 and 10 at two places on both sides by bridging pieces 12 and 13. A slit 14 is formed in the outer piece 10, and the inner part is made into a thin piece 15, and the bridging piece 12 is connected to this thin piece 15, making the flexible piece 11 easy to bend. This bending piece 11 is formed so as to be bent laterally as shown by the arrow in FIG. Therefore, since the bending piece 11 has only lateral displacement, the bending piece 1
1 can be easily constructed to have rigidity.

As shown in FIG. 4 when viewed from the back side, three pairs of recesses 16 are formed on the inner surface of the flexible piece 11, and as shown in FIG. It has a stepped portion 17 on which the locking piece 5 of the outlet socket 3 locks. The rear end portion of the flexible piece 11 is formed to protrude rearwardly from the outer piece 10, and the stepped portion 17 is formed rearwardly from the outer piece IO.

As shown in FIGS. 1 and 3, a fixing rib 19 is integrally formed on the back surface of the other side piece 18 of the plate frame body 1. As shown in FIGS. The side piece 18 has a recess 2 inserted into the fixing rib 19 side.
0 is bored, and a pair of stepped portions 21 are provided on the back side of the recess 20.
A group is formed.

The stepped portion 21 is formed behind the back surface of the side piece 18 and is adapted to lock the locking piece 5 of the outlet socket 3. Also,
As shown in FIG. 1, an inclined surface 22 is formed on the inside of the fixing rib 19 and at the back corresponding to the stepped portion 21, and the locking piece 5 of the outlet 3 comes into contact with this inclined surface 22. By touching and following along, the other stopper piece 5 causes the bending piece 11 to bend outward.

The front surface of the plate frame body 1 is recessed one step from the surroundings, and a decorative plate 23 is detachably attached to the front surface. That is, six engaging pieces 24 are integrally protruded from the back surface of the decorative plate 23, and an engaging hole 25 that engages with the engaging pieces 24 is formed in the plate frame body 1. In the center of the decorative plate 23, there is an opening window 26 for exposing the front surface of the outlet 3 having the plug blade insertion hole.
is the provision. In this embodiment, a decorative plate 23 for one wiring device is used. Therefore, depending on the number of wiring devices used, a decorative plate 23 provided with opening windows 26 suitable for the number of wiring devices used may be used. Further, locking holes 27 for mounting a fireproof plate are bored at the four corners of the plate frame main body 1.

An insertion hole 29 is provided between the pair of recesses 20 on the side piece 18 side of the plate frame body 1 so as to penetrate in the front-rear direction for inserting a screwdriver 28 for releasing the outlet 3. As shown in FIG. 5, a chamfered portion 30 is provided on the inner side surface of this insertion hole 29 in order to increase the degree of freedom of the driver 28.

Here, the dimensions of the plate frame main body 1 in the front-rear direction are:
As shown in Fig. 1, 5 flexible pieces 11 as well as fixed ribs
9, so that the fixing rib 19 does not protrude from the back surface of the plate frame body 1.

Further, the rear end surface of the fixing rib 19 and the back surface of the plate frame main body 1 may be flush with each other.
When installing on the opening side of the embedded hole, even if the embedded hole is large enough to accommodate the outlet 3 and is smaller than the dimension between the flexible piece 11 and the fixing rib 19, the fixing rib 19 will not touch the mounting surface and will not touch the plate. It is to which the frame body 1 can be attached.

Next, we will explain how to attach and detach the outlet 3 to the plate frame main body 1. First, as shown in FIG. the other locking piece 5 on the inclined surface 22 of the fixing rib 19.
Move it to the front side along. By coming into contact with and running along this inclined surface 22, the outlet 3 moves toward the flexible piece 11 side. Therefore, one of the locking pieces urges the bending piece 11 outward and bends it. When the other locking piece 5 passes over the inclined surface 22 and is inserted and locked into the stepped portion 21, the outlet 3 returns to the right in FIG. The outlet 3 is attached to the plate frame body 1 by being locked to the stepped portion 17° 21 and abutting against the back surface of the plate frame body 1. That is, one locking piece 5 of the outlet 3 is first attached to the flexible piece 11 side on the movable side.
Insert the flexible piece 1 on the movable side by the inclined surface 22 on the fixed side.
1 is pushed out and fitted.

In other words, the flexible piece 11 on the step part 17 side where the locking piece 5 is inserted and locked first is bent in the lateral direction, and the fixing rib 19 side on the step part 21 side, into which the locking piece 5 is inserted later, is not bent.

Next, when removing the outlet 3 from the plate frame main body 1, do it as follows:
8 into the insertion hole 29, as shown in FIG. Then, use the screwdriver 28 to open the outlet 3.
is biased toward the flexible piece 11 side, and by removing the locking piece 5 from the stepped portion 22, the outlet socket 3 can be easily removed from the plate frame main body 1. At this time, since a space is formed by the chamfered portion 30, the degree of freedom of the driver 28 can be increased, and the driver 28 can be easily installed and removed. Furthermore, if the insertion hole 29 itself is enlarged to facilitate release, the strength of the side piece 18 will be reduced by the enlarged insertion hole 29, but since only the chamfering is done, the strength of the side piece 18 will be reduced. The outlet 3 can be easily disconnected without any trouble.

, it is also possible to release the socket by manually shifting the outlet 3 toward the flexible piece 11 without using the screwdriver 28.

[Embodiment 2] FIGS. 6 to 9 show another embodiment. In the previous embodiment, the structure was such that three outlets 3 of the size of one standardized wiring device module could be installed, but in this embodiment, two openings 2 are arranged side by side, and three outlets 3 can be attached. The structure allows two sets of wiring devices to be attached. That is, the plate frame body 1
is formed in a date-and-hour shape, with openings 2 formed on both sides of the central piece 31, and side pieces 8 having flexible pieces 11 formed symmetrically with the central piece 31 on the fixed side as a boundary; This embodiment is basically the same as the previous embodiment.

Here, as shown in FIG. 7, on both sides of the fixing rib 19 formed on the back surface of the central piece 31 of the plate frame main body 1, a stepped portion 21 and an inclined surface 22 having the same functions as those described above are formed. be. Further, as shown in FIG. 9, the driver 28
Chamfered portions 30 are formed symmetrically on both sides of the insertion hole 29 into which the insertion hole 29 is inserted. In other words, the plate frame main body 1 of this embodiment has a structure in which the central piece 31 is a border (symmetrically formed) compared to that of the previous embodiment. The shape is sized to match the size of the vehicle.

To install the outlet 3, as shown in FIG.
2 in the same manner as in the previous embodiment. Furthermore, as shown in the shaded area in FIG.
This increases the strength of the plate frame body 1. In other words,
The strength of the plate frame main body 1 against pressure from wiring tools, tightening of box screws into the embedded box, etc. is improved.

Also in this embodiment, the plate frame body 1 has a thickness such that the fixing ribs 19 and the like do not protrude from the back surface of the plate frame body 1.

[Effects of the Invention] As described above, the present invention forms a plate frame main body having a decorative plate attached to the front surface, an opening for exposing the wiring device in the center, and covering the opening surface of the embedding hole. , a flexible piece that is visible in the lateral direction is integrally formed on one side piece of the plate frame body parallel to the side piece, and one locking piece protruding from both sides of the wiring device is inserted into the flexible piece. The other side of the grate frame body forms a first step to be locked, and the sloped surface along which the other locking piece of the wiring device contacts and bends the bending piece outward by one locking piece is attached to the other side of the grate frame main body. The flexible piece on the movable side is formed on the side piece, and also has a second step portion on the front side of the slope that inserts and locks the other locking piece that has climbed over the slope. Insert and lock one of the locking pieces of the wiring device into the first step of the wiring device, and align the other locking piece against the slope of the fixed side to bend the flexible piece in the lateral direction. When the stop piece climbs over the slope, the flexible piece returns and the picture body stop piece is locked to both steps, allowing the wiring device to be attached to the grate frame body. Since the flexible piece only needs to have a lateral bending structure, it is possible to have a rigid structure for the flexible piece, and since the fixed side is formed with an inclined surface, This has the effect of reducing the insertion force of the wiring device.

In addition, by making the front and rear dimensions of the peripheral part of the plate frame body protrude backwards from the inner members, it is possible to prevent the inner members from hitting the mounting surface, etc. When installing on the opening side of the embedded hole, even if the embedded hole is just large enough to fit the wiring device,
Since the internal members do not touch the mounting surface, the plate frame main body can be mounted.

In addition, by making the plate frame body into which three wiring devices of the size of one standardized wiring device module can be attached, up to three wiring devices can be attached to one plate frame body. Improves workability.

Furthermore, by making the plate frame body capable of mounting 3 wiring devices the size of one standardized wiring device module, a total of 6 wiring devices in parallel, a maximum of 6 wiring devices can be attached to one plate frame body. This improves the workability of the equipment.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the embodiment of the present invention in the first state of storage, Fig. 2 is an exploded perspective view of the same, Fig. 3 is a rear view of the plate frame main body of the above, and Fig. 4 is a bending piece of the above. 5 is an explanatory diagram of the operation of the same as the above, FIG. 6 is an exploded perspective view of the implementation rIA2 of the same as the above, FIG. 7 is a cross-sectional view showing the installation state of the same as the above, and FIG. a) to (d) are a front view of the same plate frame body as above, a broken bottom view taken along lines A to E' in No. 8 [W (a), and a cross section taken along lines F to I' in Fig. 8 (a). FIG. 9 is an explanatory diagram of the same operation as above, and FIG. 10 is a sectional view of the conventional example. 1 is a plate frame main body, 2 is an opening, 5 is a locking piece, 8 is a side piece, 11 is a bending piece, 17 is a first step part, 18 is a side piece, 2
1 is a second step, 22 is an inclined surface, and 23 is a decorative plate. Agent Patent Attorney Ishi 1) Length 71... Plate frame body - Opening 5... Locking piece 8... Side piece 11... Flexible piece 17... First step 18 ...Side piece 21...Second stepped portion Fig. 3 Fig. 4 Fig. 5 Fig. 7 Fig. 9 Fig. 10

Claims (3)

[Claims] (1) A decorative plate is attached to the front side, a plate frame body is formed which has an opening in the center to expose the wiring device and covers the opening side of the embedded hole, and one side piece of the plate frame body is A flexible piece having flexibility in the lateral direction is integrally formed in parallel with the side piece, and a first step portion is provided on the flexible piece for inserting and locking one of the locking pieces protruding from both sides of the wiring device. An inclined surface is formed on the other side piece of the plate frame main body, and the other side piece of the plate frame main body is formed with an inclined surface along which the other side piece of the wiring device comes into contact with and bends the flexible piece outwardly by one piece of the piece. A second step part is formed on the front side of the inclined surface, into which the other locking piece that has climbed over the inclined surface is inserted and locked, and the dimension in the front-rear direction of the peripheral part of the plate frame body is set to be more rearward than the inner member. A plate frame for a wiring device, characterized in that the plate frame protrudes from the side. (2) The plate frame for a wiring device according to claim 1, characterized in that the plate frame main body is capable of mounting three wiring devices each having the size of one standardized wiring device module. (3) The plate frame for a wiring device according to claim 1, characterized in that the plate frame main body is capable of mounting three wiring devices each having the size of one standardized wiring device module, a total of six in parallel. .