JP3090436B2 - Wiring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring device comprising a plate frame, a wiring device, and a decorative plate.

FIG. 11 shows a conventional example, in which a fixed rib 53 on the fixed side is provided on one side of a plate frame 50, and a flexible piece 51 on the movable side is provided on the other side of the plate frame 50. By bending the socket, one of the locking pieces 5 of the outlet 3 is bent.
Is fixed to the step portion 54 of the fixing rib 53, and the other locking piece 5 is locked to the step portion 52 of the flexible piece 51, so that the outlet 3 as a wiring device is attached to the plate frame 50. In FIG. 11, reference numeral 55 denotes an inclined surface provided on the bending piece 51.

[0003]

In such a conventional example, if the rigidity of the flexible piece 51 is insufficient, the flexible piece 51 is easily bent and deformed, and the step 52 and the fixing rib 53 of the flexible piece 51 are formed.
The locking piece 5 is easily released from the stepped portion 54, and a problem arises in the strength of attaching the wiring device to the plate frame 50.

[0004] The present invention has been made in view of the above points, and an object of the present invention is to provide a wiring device capable of firmly attaching a wiring device to a plate frame.

[0005]

Wiring apparatus according to the present invention SUMMARY OF THE INVENTION The flange portion provided with a locking hole of a plurality of the mounting holes and fire the plate mounting opening sized to be mounted side by side wiring devices In the elongated opening formed in the flange portion, the first step portion is provided at a plurality of positions in the longitudinal direction, and both ends are integrated with the flange portion and a part of the longitudinal direction is formed. Side surfaces on both sides are joined to the flange by bridging pieces, and a second piece corresponding to a flexible piece formed along one side edge of the opening and through holes formed in the flange at a plurality of locations in the longitudinal direction. stepped portion is provided in Rutotomoni inclined distally from the second step portion
A plate frame having a surface provided and having fixing ribs formed along the other side edge of the opening, and a body and a cover are formed by assembling a body with a metal assembling frame so as to project from both sides, respectively. One of the locking pieces provided on the assembly frame is locked to the first step portion, and the other locking piece is fixed to the first step.
By contacting the inclined surface of the
The bending piece was pressed and bent by one of the locking pieces locked to the step
Later, by locking the other locking piece to the second step, a wiring device attached to the opening of the plate frame and an opening window of a size corresponding to the number of wiring devices attached to the opening are formed. And a decorative plate mounted on the front surface of the flange of the plate frame by engaging an engagement piece projecting from the rear surface with an engagement hole provided in the flange of the plate frame. It is characterized by becoming. The invention according to claim 2 is characterized in that the flange of the plate frame is provided with an insertion hole for inserting a driver for unlocking the second step and the locking piece of the wiring device. It is assumed that. The invention according to claim 3 is characterized in that the flange of the plate frame is provided with a slit so that a thin piece to which the bridging piece is connected is formed between the thin piece and the elongated opening.

[0006]

When the wiring device is attached to the opening of the plate frame, the locking pieces on both sides of the wiring device are respectively locked to the first step of the bending piece and the second step of the fixing rib. Since a part of the longitudinal side of the flexible piece whose both ends are integrated with the flange is joined to the flange by a bridging piece, the rigidity of the flexible piece is increased by the bridging piece so that it is not easily bent and deformed. Has become.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3, a plate frame 1 made of a synthetic resin is formed flat, and an opening 2 is provided at a central portion thereof.
Has a flange portion 8 around it. An outlet 3 as a wiring device is detachably mounted on the plate frame 1 with its front surface exposed at the opening 2. Outlet 3 is body 3a
The cover 3b and the cover 3b are joined by a pair of metal assembly frames 4, and a pair of locking pieces 5 project from the side end surfaces of the assembly frame 4, respectively. Note that a switch may be used instead of the outlet 3. The outlet 3 has a size corresponding to one standardized wiring appliance module, and the opening 2 of the plate frame 1 has a size to which three outlets 3 can be attached.

The plate frame 1 is installed in front of the opening surface of an embedding box embedded in a wall or the like.
Elongated and circular mounting holes 6 and 7 are formed in the upper and lower portions of the flange 8 of the plate frame 1 respectively. An elongated opening 9 is formed in the flange 8 of the plate frame 1 along one side edge in the longitudinal direction of the opening 2, and a bending piece 11 is provided in the elongated opening 9. The flexible piece 11 is a piece having flexibility in which both upper and lower ends are integrated with the flange 8 of the plate frame 1 at both ends of the elongated opening 9, and is formed along one side edge of the opening 2. . The bending piece 11 is connected to the flange 8 and the bridging pieces 12 and 13 at two locations on both sides in the longitudinal direction. A slit 14 is formed in the flange 8 outside the elongated opening 9 to form a thin piece 15 having a thin inner portion, and the bridging piece 12 is coupled to the thin piece 15 to bend the flexible piece 11. Making it easier. This bending piece 1
1 is formed so as to bend in the lateral direction as indicated 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. 4 as viewed from the rear side, three sets of a pair of through holes 16 are formed on the inner surface of the bending piece 11, and as shown in FIG. Is a step 17 to which the locking piece 5 of the outlet 3 is 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.

As shown in FIGS. 2 and 3, a fixing rib 19 is integrally formed on the back surface of the flange 8 of the plate frame 1 along the other side edge of the opening 2 in the longitudinal direction. The flange 8 is provided with a through-hole 20 penetrating the fixing rib 19, and three pairs of steps 21 are formed on the back side of the through-hole 20. The step portion 21 is formed behind the back surface of the flange portion 8, and locks the locking piece 5 of the outlet 3. Further, as shown in FIG.
An inclined surface 22 is formed on the back corresponding to the step portion 21, and the engaging piece 5 of the outlet 3 abuts along the inclined surface 22, so that the bending piece 11 is formed on the other engaging piece 5. Is bent outward.

The front surface of the plate frame 1 is recessed one step from the periphery, and a decorative plate 23 is detachably mounted on the front surface. That is, the decorative plate 23
On the back surface, six engaging pieces 24 are integrally protruded, and an engaging hole 25 for engaging with the engaging pieces 24 is formed in the flange 8 of the plate frame 1. An opening window 26 is provided at the center of the decorative plate 23 to expose 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. Therefore,
Depending on the number of wiring devices used, a decorative plate 23 provided with opening windows 26 corresponding to the number of wiring devices may be used. Also,
At four corners of the plate frame 1, locking holes 27 for mounting a refractory plate are formed.

A pair of through holes 20 in the flange 8 of the plate frame 1
Between the driver 28 when the outlet 3 is released
An insertion hole 29 for inserting a through hole is provided so as to penetrate in the front-rear direction. As shown in FIG. 5, a chamfered portion 30 is provided 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 1 will be described. First, as shown in FIG. 2, one of the locking pieces 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 fixed to the fixing rib 1.
9 to the front side along the inclined surface 22. The outlet 3 is moved toward the bending piece 11 by abutting and making contact with the inclined surface 22. For this reason, one locking piece 5 urges the bending piece 11 outward to bend. Then, when the other locking piece 5 gets over the inclined surface 22 and is inserted and locked in the stepped portion 21, the outlet 3 is reset by the return force of the bending piece 11 as shown in FIG.
To the right, the two locking pieces 5 are locked to the steps 17 and 21 and abut on the back surface of the plate frame 1, so that the outlet 3 is mounted on the plate frame 1. That is,
One of the locking pieces 5 of the outlet 3 is inserted into the movable-side bending piece 11 first, and the movable-side bending piece 11 is pushed outward by the fixed-side inclined surface 22 and fitted therein. That is, the bending piece 1 on the side of the step portion 17 into which the locking piece 5 is inserted and locked first.
1 is bent in the lateral direction so that the fixing rib 19 on the side of the step portion 21 to be inserted later is not bent.

Next, when the outlet 3 is removed from the plate frame 1, the following procedure is performed. That is, the driver 28 is inserted into the insertion hole 29 from the front, and as shown in FIG.
The tip of the driver 28 is brought into contact with the end face of the assembly frame 4 between the locking pieces 5, and the driver 28 is turned outward as shown by a two-dot chain line in the figure. Then, outlet 3 by the driver 28 is urged deforming pieces 11 side, step portions 21 a locking piece 5
By detaching the outlet 3, the outlet 3 can be easily removed from the plate frame 1. At this time, since the chamfered portion 30 forms a space, 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 the release, the strength of the flange 8 is reduced by the size of the insertion hole 29, but since the chamfer is only performed, the strength of the flange 8 is not reduced. The outlet 3 can be easily released. Here, it is also possible to shift the outlet 3 by hand toward the bending piece 11 without using the screwdriver 28 to release the outlet.

FIGS. 6 to 10 show another embodiment. In the previous embodiment, three outlets 3 each having a size equivalent to one standardized wiring appliance module can be mounted. In this embodiment, two openings 2 are provided side by side and three outlets 3 are provided. 2 wiring devices can be mounted. That is, the plate frame 1 is formed in a substantially Japanese character shape, the openings 2 are formed on both sides of the central piece 31, and the flange 8 having the flexible piece 11 is formed symmetrically around the fixed-side central piece 31. This is basically the same as the previous embodiment.

Here, as shown in FIG. 7, a step portion 21 and an inclined surface 22 having the same functions as those described above are formed on both side surfaces of the fixing rib 19 formed on the back surface of the central piece 31 of the plate frame 1, respectively. It is. As shown in FIG. 10, chamfered portions 30 are formed symmetrically on both sides of the insertion hole 29 into which the driver 28 is inserted. That is, the plate frame 1 of this embodiment has a structure in which the plate of the previous embodiment is formed symmetrically with respect to the center piece 31. The decorative plate 23 has a shape corresponding to the size of the plate frame 1.

As shown in FIG. 7, the outlet 3 is attached by first inserting and locking the locking piece 5 of the outlet 3 with the step 17 of the bending piece 11 on both sides, and thereafter, fixing the central fixing rib 19.
Along the inclined surface 22 in the same manner as in the previous embodiment. Further, as shown by a hatched portion in FIG. 9 (b), a substantially day-shaped rib 32 is provided on the periphery of the opening 2, and the strength of the plate frame 1 is increased by the rib 32. That is, the strength of the plate frame 1 against the pressing of the wiring device, the tightening of the box screw to the embedding box, and the like is improved.

[0017]

As described above, according to the present invention, the locking pieces on both sides of the wiring device are respectively engaged with the first step of the bending piece and the second step of the fixing rib provided on the flange of the plate frame. By attaching the wiring device to the opening of the plate frame by stopping, the longitudinal portion of the flexible piece whose both ends are integrated with the flange is joined to the flange by the bridging piece. The rigidity can be increased by the bridging pieces, the flexure can be easily flexed so as not to be deformed, and the wiring device can be firmly attached to the plate frame. In addition, one lock of wiring equipment
One piece is locked to the first step and the other piece is fixed.
By abutting on the inclined surface of the
Press the bending piece with one of the locking pieces locked to the step
And then lock the other locking piece to the second step
The fixed rib with the inclined surface does not bend,
Bends laterally so that the fasteners on both sides of the wiring
The stop piece can be locked to the first step and the second step.
It is difficult to release the locking of the locking piece
Things.

Further, the opening of the plate frame is formed in a size that allows a plurality of wiring devices to be mounted side by side, and an opening window having a size corresponding to the number of wiring devices mounted in the opening is provided. Is formed, the plate frame can be shared regardless of whether one or a plurality of wiring devices are attached.

Also, the decorative plate is mounted on the front surface of the flange of the plate frame by engaging the engaging piece projecting from the rear surface with the engaging hole provided in the flange of the plate frame. The attachment and detachment of the decorative plate can be easily performed by the combining means.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the mounting state of the above.

FIG. 3 is a rear view of the plate frame.

FIG. 4 is a perspective view of a main part of the bending piece as viewed from the back.

FIG. 5 is an operation explanatory view of the above.

FIG. 6 is an exploded perspective view of another embodiment of the present invention.

FIG. 7 is a cross-sectional view showing the mounting state of the above.

FIG. 8 (a) is a front view of the plate frame of the above, and FIG. 8 (b) is a cross-sectional view of FIG.

9A is a cross-sectional view taken along the line F-I ′ of FIG. 8A, and FIG. 9B is a rear view of the plate frame.

FIG. 10 is an operation explanatory view of the above.

FIG. 11 is a sectional view of a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Plate frame 2 Opening 3a Body 3b Cover 4 Assembly frame 5 Locking piece 6 Mounting hole 7 Mounting hole 8 Flange 11 Flexure piece 12 Bridge piece 14 Slit 17 First step 19 Fixing rib 20 Through hole 21 Second Step 22 Inclined surface 23 Decorative plate 24 Engagement piece 25 Engagement hole 26 Open window 27 Fireproof plate mounting hole 29 Insertion hole

Continuation of the front page (56) References JP-A-1-1100010 (JP, A) JP-A-60-241707 (JP, A) JP-A-1-198209 (JP, A) Jpn. , U) Fully open 1979-155918 (JP, U) Fully open sho 59-161321 (JP, U) Fully open sho 60-66213 (JP, U) Fully open 1987-654519 (JP, U) 1-69310 (JP, U) Hikaru 1-81609 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02G 3/00-3/04

Claims (3)

(57) [Claims] 1. A synthetic resin having an opening large enough to mount a plurality of wiring devices side by side, a mounting hole, and a flange provided with a locking hole for mounting a fireproof plate. In the elongated opening formed in the flange portion, first step portions are provided at a plurality of locations in the longitudinal direction, both ends are integrated with the flange portion, and both sides of a part of the longitudinal direction are formed by bridging pieces. combined with parts, one deflection and pieces formed along the side edges of the opening, the second step portion corresponds to the through hole formed in the flange portion is provided at a plurality of positions in the longitudinal direction Rutotomoni From this second step
An inclined surface is provided on the distal end side, having a fixing rib formed along the other side edge of the opening, a plate frame, and a body and a cover assembled by a metal assembly frame, each formed from both sides. One of the locking pieces provided on the assembly frame so as to protrude is locked to the first step portion , and the other locking piece is locked.
When the stop piece comes into contact with the inclined surface of the fixing rib,
Therefore, the bending piece is pressed by one of the locking pieces locked to the first step portion.
And then the other locking piece is locked to the second step.
By forming a wiring device attached to the opening of the plate frame and an opening window of a size corresponding to the number of wiring devices attached to the opening, an engaging piece projecting from the back surface is formed by a plate. A decorative plate mounted on a front surface of the flange of the plate frame by engaging with an engagement hole provided in the flange of the frame. 2. The flange of the plate frame is provided with an insertion hole for inserting a driver for unlocking the second step and the locking piece of the wiring device. Item 1
The wiring device according to item 1. 3. The flange of the plate frame is provided with a slit such that a thin piece to which the bridging piece is connected is formed between the flange and the elongated opening. Wiring equipment.