JPH02311110A - Plate frame for wiring instrument - Google Patents

Abstract

PURPOSE:To increase instrument holding strength by shortening the size of a bridging piece connecting a flexible piece and a side piece and reducing the twist of the flexible piece due to pushing from the face of a wiring instrument. CONSTITUTION:An internal piece 9 and an external piece 10 are formed integrally in parallel through a clearance in side pieces 8 on both sides of a plate frame body 1. A flexible piece 11, upper and lower ends of which are unified with the plate frame body 1 and which has flexibility, is shaped in the clearance between both side pieces 9, 10. The internal side faces of both side pieces 9, 10 are bonded by bridging pieces 12, 13 at two positions on both sides of the flexible piece 11. A slit 14 is shaped to the external piece 10, the external piece 10 is formed in a thin piece 15, a section on the inside of which is thinned, the bridging piece 12 is combined with the thin piece 15, and the flexible piece 11 is easy to be deflected. The size S of the briding piece 12 is shortened, thus reducing the revolution of the bridging piece 12 at a time when a receptacle is pushed from a face, then increasing instrument holding strength.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is applied 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. It is.

[Prior Art] FIG. 8 shows a conventional example, in which a plate frame main body 5° has a fixed rib 53 on one side and a flexible piece 51 on the movable side on the other side. This flexible piece 51 is formed with a tilted surface 55 for inserting the outlet 3 which is a wiring device.

In this conventional example, one of the locking pieces 5 of the outlet 3 is first inserted and locked into the step portion 54 on the fixed side, and then the other locking piece 5
By abutting against and following the inclined surface 55 of the bending piece 51,
The bending piece 51 is bent toward the outside C so that it is locked to a stepped portion 52 of the bending piece 51.

[Problems to be Solved by the Invention] In such a conventional example, when pressure is applied from the front of the wiring device after installing the wiring device such as the outlet 3, the flexible piece 5
There was a problem in that the cable 1 twisted in the direction in which the wiring device came off and sank down, causing the wiring device to come off.

In addition, when removing the outlet 3 attached to the plate frame body 50 (as shown in FIG. 9, insert the flathead screwdriver 28 between the flexible piece 51 and the outlet 3, and move the screwdriver 28 in the direction of the arrow in the figure. As shown, bend the flexible piece 51 toward the outlet 3 side and bend the flexible piece 51 outward.
2 and the locking piece 5, and the outlet 3 is removed. However, since it has an end-removal structure that bends the bending piece 51, it is difficult to remove.

Figure 10 shows a plate frame main body 50 with an rfI dual structure.
In this case, the flexible piece 5 forming the inclined surface 55
1 was protruding from both sides of the back, which caused problems such as hitting the box cover of the embedding hole during construction.

The present invention has been provided in view of the above-mentioned points, and it reduces the twisting of the flexible piece due to pressure from the front of the wiring device, increases the strength of holding the device, and facilitates the removal of the wiring device. provides a plate frame for a wiring device whose purpose is to prevent the box cover of the embedded hole from hitting the box cover during construction.

[Means for Solving the Problems] The present invention includes a horizontally flexible flexible piece that is integrally formed on one side piece of the plate frame main body in parallel with the side piece, and a wiring device attached to the flexible piece. Forms a stepped part into which one of the locking pieces protruding from both sides is inserted and locked, and when the other locking piece of the wiring device comes into contact with and follows, one of the locking pieces moves the upper and flexible pieces outward. A locking portion for inserting and locking the other locking piece is formed on the other side piece of the plate frame main body, and the dimensions of the bridging piece connecting the bending piece and the side piece are shortened. This is a characteristic feature.

In addition, the opening of the plate frame body is connected to the 2
A locking part for locking a locking piece of a wiring device installed in each opening on both sides is formed symmetrically on this central piece, and when the wiring device is shifted laterally outward, the locking part An insertion hole is drilled through which a tool such as a screwdriver is inserted to release the lock between the locking piece and the locking piece.

Furthermore, a rib is provided to protrude rearwardly from the plate frame body to form an inclined surface that deflects the flexible piece outward when the locking piece of the wiring device comes into contact with and follows the locking part of the central piece. ,
It is characterized in that the amount of backward protrusion of the flexible pieces provided on both sides of the grate frame body is reduced.

[Function] With the above configuration, the dimension of the bridging piece that connects the flexible piece and the side piece is shortened, and twisting of the flexible piece due to pressure from the front of the wiring device is reduced.

Further, the wiring device is moved outward and laterally using a tool such as a screwdriver inserted through the insertion hole to release the locking between the locking portion and the locking piece.

Furthermore, a rib with an inclined surface that protrudes backward is provided on the center piece of the plate frame main body, and flexible pieces with a reduced amount of protrusion towards the back are provided on both side pieces. The protrusion dimension in this direction is kept to a minimum.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. First, the structure of the entire plate frame will be explained. In Figures 2 to 5, it is made of synthetic resin.

The plate frame main body 1 is formed flat in the shape of a date and time, and has two openings 2 in the center with a central piece 31 as a border.A receptacle 3 as a wiring device is inserted into the opening 2. The front surface is exposed and it is detachably attached to the plate frame body 1.

The outlet socket 3 has a body 3a and a cover 3b connected to each other by a pair of metal assembly frames 4G, and a pair of locking pieces 5 protrude from the side end surfaces of the assembly frames 4, respectively. In addition, outlet 3
This outlet 3 may be a switch instead. The outlet 3 is the size of one standardized wiring equipment module, and the opening 2 of the plate frame body 1 is sized to accommodate three outlets 3. Therefore, a total of six outlets 3 can be attached to this plate frame body 1.

This plate frame body 1 is installed in front of the opening surface of an embedded box embedded in a wall surface, etc., and the plate frame body 1 has slot-shaped and circular mounting holes above and below the opening 2. A hole 6.7 is drilled in each case. As will be described later, movable parts 34 are formed on both sides of the plate frame main body 1, and a fixed part 33 is formed in the central piece 31 at the center.

First, the movable part 34 will be explained. Plate frame body 1
In the side pieces 8 on both sides, an inner piece 9 and an outer piece 10 are integrally formed in parallel with each other with a gap therebetween. This side piece 9.10
A visible flexible piece 11 whose upper and lower ends are integrated with the plate frame body 1 is formed in the gap between the plates. This bending piece 1
At two places on both sides of 1, the inner surface of both side pieces 9.10 and bridging piece 1
It is joined at 2°13. The outer piece 10 has a slit 14
A thin piece 15 is formed, and the inner part is thinner.
The bridging piece 12 is bonded to this thin piece 15, making the bending piece 11 easy to bend. This bending piece 11
It is formed to bend laterally as shown by the arrow in the figure. Therefore, since the bending piece 11 can only be displaced in the lateral direction, it is possible to easily provide a structure in which the bending piece 11 has 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 to which the locking pieces of the outlet 3 lock. 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 10.

Next, the fixing portion 33 will be explained. A fixing rib 19 is integrally formed on the back surface of the center piece 31 of the plate frame body 1, as shown in FIGS. 3 and 5(d). center piece 3
There are ovals on both sides of 1 corresponding to each opening 2 as shown below. Note that since both sides of the fixed rib 19 are formed symmetrically, the - side will be described. A recess 20 is formed on the fixed rib 19 side to be inserted back and forth, and three pairs of step portions 21 are formed on the back side of the recess 20. It is formed behind the back surface and is adapted to lock the locking piece 5 of the outlet 3. Also,
As shown in FIG. 3, an inclined surface 22 is formed on the back side of the fixed rib 19 corresponding to the stepped portion 21, and the locking piece 5 of the outlet 3 contacts and follows this inclined surface 22. By doing so, the flexible piece 11 is bent outward by the other locking piece 5.
, the inclined surface 22, etc. constitute a locking portion.

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, a plurality of retaining pieces 24 are integrally provided on the back surface of the decorative plate 23, and these engaging pieces 24
An engagement hole 25 that engages with the plate frame body 1 is bored in the plate frame body 1. The decorative plate 23 is provided with an opening window 26 for exposing the front surface of the outlet 3 having the plug blade insertion hole. In this embodiment, a decorative plate 23 for one wiring device is used for each opening 2. Therefore, depending on the number of wiring devices to be used, it is sufficient to use a decorative plate 23 provided with opening windows 26 corresponding to the number of wiring devices to be used.Furthermore, the four corners of the plate frame body 1 are provided with locking holes for attaching fireproof plates. A hole 27 is bored in the hole 27.

Between the pair of recesses 20 in the center piece 31 of the plate frame body 1, insertion holes 29 for inserting a screwdriver 28 for releasing the outlet 3 are provided so as to pass through the holes 29 in the front-rear direction. As shown in FIG. 6, 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.

Next, the operation of attaching and detaching the outlet 3 to the plate frame body 1 will be explained. First, as shown in FIG. 3, one locking piece 5 of the outlet 3 is inserted and locked into the step 17 on the flexible piece 11 side, and the other locking piece 5 is inserted along the slope 22 of the fixing rib 19. and move it to the front side. 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 5 urges the bending piece 11 outward and bends it. When the other locking piece 5 climbs over the slope 22 and locks on the step 21, the receptacle 3 returns to the inside of FIG. The outlet 3 is attached to the plate frame main body 1 by being locked to the plate frame main body 1 and in contact with the back surface of the plate frame main body 1. That is, one locking piece 5 of the outlet 3 is first inserted into the flexible piece 11 side of the movable part 34, which is the movable side, and the flexible piece 11 on the movable side is pushed outward by the inclined surface 22 of the fixed part 33, which is the fixed side. It has a structure that 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. Therefore, when inserting the instrument, the outer bending piece 11 is bent by the central inclined surface 22 to fit the instrument, so that the insertion force can be reduced. The same applies to the attachment of the outlet 3 in the other opening 2.

Next, when removing the outlet 3 from the plate frame main body 1, do it as follows:
8 into the insertion hole 29, and as shown in FIG. Then, the outlet 3 is urged toward the flexible piece 11 by the driver 28, and by removing the locking piece 5 from the stepped portion 22, the outlet 3 can be easily removed from the plate frame main body 1. In other words, the tip of the screwdriver 28 is used to push out the outlet 3 to remove it.At this time, since a space is formed by the chamfered portion 30, the degree of freedom of the driver 28 can be increased.
Easy to remove. Furthermore, if the insertion hole 29 itself is enlarged to facilitate release, the strength of the center piece 31 will be reduced by the enlarged insertion hole 29, but since it is only chamfered, the strength of the center piece 31 will be reduced. The outlet 3 can be easily disconnected without any trouble. Here, it is also possible to release the outlet by manually shifting the outlet 3 toward the flexible piece 11 without using the driver 28. Furthermore, driver 2
The tool is not limited to 8, but any other tool may be used as long as it has a flat tip.

Incidentally, on the periphery of the opening 2, as shown in the shaded area in FIG. 5(d), a date-shaped rib 32 is provided, and this rib 32 increases the strength of the plate frame body 1. In other words, the strength of the plate frame main body 1 is improved against the pressure of wiring equipment, the tightening of box screws to the embedded box, and the like.

FIG. 1 is an enlarged front view of a main part showing the gist of the present invention, and shows a connection portion between a flexible piece 11 and an outer piece 10 by a bridging piece 12. In this embodiment, the dimension S of the bridging piece 12 is shortened to reduce rotation of the bridging piece 12 when pressure is applied to the outlet 3 from the front, and to increase the device holding strength.

As shown in FIG.
1, no fixed side ribs are formed on both sides, and only the movable parts 34 are formed on both sides, so that the protrusion dimension toward the back on both sides is reduced. That is, as shown in FIG. 7, a cross-sectional view of the main part of the flexible piece 11 constituting the movable part 34 is shown, and the amount of protrusion of the lower part 11a of the flexible piece 11 that protrudes from the back surface of the plate frame main body 1 is reduced. There is. That is, since the bending piece 11 only has the function of bending in the lateral direction, and there is no need to form the inclined surface 22 like the fixed rib 19,
The amount of protrusion of the movable part 34 is significantly smaller than that of the fixed part 33. Therefore, both sides of the back side of the plate frame main body 1 do not come into contact with the box cover of the embedding hole, and the plate frame main body 1 can be reliably attached to the box cover.

[Effects of the Invention] As described above, the present invention includes a flexible piece that is visible in the lateral direction and is integrally formed on one side piece of the plate frame main body in parallel with the side piece, and a wiring device is attached to the flexible piece. A step part is formed for inserting and locking one of the locking pieces protruding from both sides, and the other locking piece of the wiring device comes into contact with and follows, thereby bending the flexible piece outward by one of the locking pieces. At the same time, a locking portion for inserting and locking the other locking piece is formed on the other side piece of the plate frame main body, and the dimensions of the bridging piece connecting the bending piece and the side piece are shortened. Therefore, it is possible to shorten the dimensions of the bridging piece that connects the flexible piece and the side piece, reduce twisting of the flexible piece due to pressure from the front of the wiring device, and raise the device holding device of the plate frame body. It has the effect that it can.

In addition, the opening of the plate frame body is connected to the 2
A locking part for locking a locking piece of a wiring device installed in each opening on both sides is formed symmetrically on this central piece, and when the wiring device is shifted laterally outward, the locking part Since this device has an insertion hole through which a tool such as a screwdriver can be inserted to release the locking piece from the locking piece, the wiring device can be moved laterally outward using the tool inserted through the insertion hole. hand,
By releasing the lock between the locking portion and the locking piece, it becomes easier to remove the wiring device compared to the conventional method in which the flexible piece is bent.

Furthermore, a rib is provided to protrude rearwardly from the plate frame body to form an inclined surface that deflects the flexible piece outward when the locking piece of the wiring device comes into contact with and follows the locking part of the central piece. ,
By reducing the amount of backward protrusion of the flexible pieces provided on both sides of the plate frame body, the protrusion dimension on both sides of the back side of the plate frame body can be minimized, and the box of the embedded hole can be minimized. It can be installed without touching the cover.

[Brief explanation of the drawing]

Fig. 1 is a front view of the main parts of the embodiment of the present invention, Fig. 2 is an exploded perspective view of the entire same as above, Fig. 3 is a sectional view showing the installation state of the above, Fig. 4 is a rear view of the bending piece of the same as above. A perspective view of the main parts seen from
Figures 5(a) to 5(d) are a front view of the same plate frame body as above, a bottom view taken along the A-E'' line in Figure 5(a), and F to I' in Figure 5(a). A sectional view and a back view of the line, FIG. 6 is an explanatory diagram of the same operation as above, FIG. 7 is a sectional view of the main part of the same as above, FIG. 8 is a sectional view of the conventional example, FIG. 9 is an explanatory diagram of the same as above, Fig. 10 is a bottom view of another 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, 12 is a bridge piece, and 17 is a stepped part. , 22 is an inclined surface, 23 is a decorative plate, and 29 is an insertion hole. Agent Patent Attorney Stone 1) Length 71...Plate frame body 2...-Opening 8...Side piece 11... Flexing piece 12...Bridging piece JSB diagram Figure 4 Figure 6 Figure 7 Figure 8 Figure 9

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 stepped portion is formed on the flexible piece for inserting and locking one of the locking pieces protruding from both sides of the wiring device, By touching and following the other locking piece of the wiring device, one of the locking pieces bends the above-mentioned flexible piece outward, and the other locking piece is inserted and the locking part is inserted into the plate frame body. A plate frame for a wiring device, characterized in that a bridging piece formed on the other side piece and connecting the flexible piece and the side piece is short in size. (2) Connect the opening of the plate frame body to 2 through the center piece.
A locking part for locking a locking piece of a wiring device installed in each opening on both sides is formed symmetrically on this central piece, and when the wiring device is shifted laterally outward, the locking part 2. The plate frame for a wiring device according to claim 1, further comprising an insertion hole through which a tool such as a screwdriver for releasing the lock between the locking piece and the locking piece is inserted. (3) A rib is provided to protrude rearward from the plate frame body to form an inclined surface that bends the flexible piece outward when the locking piece of the wiring device contacts and follows the locking part of the central piece. death,
3. The plate frame for a wiring device according to claim 2, wherein the amount of backward protrusion of the flexible pieces provided on both sides of the plate frame body is reduced.