JP3354166B2 - Wiring equipment - 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 for arranging devices such as switches and outlets on a construction surface.

[0002]

2. Description of the Related Art A round wiring device has recently been proposed because a hole formed in a construction surface is changed from a square shape to a round shape to facilitate a drilling operation. This type of round wiring equipment has a round plate frame that has an opening in the approximate center and is fixed to the construction surface, and is fitted into the opening of the plate frame and detachably attached to the plate frame And a switch fitted in the middle frame and detachably mounted on the middle frame, a decorative frame for covering the front surface of the plate frame, and the like.

[0003]

However, since the middle frame, the plate frame, and the body of the device made of synthetic resin are expected to shrink during molding, they are set to the basic dimensions where a gap occurs when they are fitted to each other. is there. For this reason, there is a problem that rattling occurs when actually assembled and assembled. In the case of this type of switch with a switch attached, a handle for operating the switch hits when the middle frame shifts to a side with poor conditions, resulting in malfunction.

[0004] The present invention has been made in view of the above problems, and an object of the present invention is to provide a container for a middle frame.
It is an object of the present invention to provide a wiring device that can be attached without rattling .

[0005]

In order to achieve the above object, the wiring device of the present invention has an opening 2 substantially at the center and is fixed to a construction surface.
The plate frame 1 to be fixed and the opening 2 of the plate frame 1
Middle frame that is fitted and detachably mounted on plate frame 1
9 and detachably mounted on the middle frame 9 by being fitted in the middle frame 9
Equipment such as switch 14 and outlet 55
A wiring device, wherein the device is locked to a locking projection 15 on a middle frame 9.
Attach by locking the hole 13 to prevent rattling on the inner surface of the middle frame 9
The dowel B for stopping is protrudingly provided and the dowel B for preventing rattling is used as an instrument.
Characterized in that it comes into contact with the outer surface of.

A round plate frame 1 having an opening 2 substantially at the center and fixed to a construction surface, and an opening 2 of the plate frame 1
An inner frame 9 that is fitted inside and detachably attached to the plate frame 1, and a switch equipped with a switch 14 and an outlet 55 that is detachably attached to the inner frame 9 and fitted into the inner frame 9. Type wiring device, the device is attached to the inner frame 9 by locking the locking projections 15 and the locking holes 13, and the dowel B for preventing rattling is protrudingly provided on the inner surface of the inner frame 9. It is also preferable that the anti-rattle dowel B is formed in contact with the outer surface of the device.

[0007]

According to the above construction, the dowel B for preventing rattling of the inner surface of the middle frame 9 is brought into contact with the outer surface of the device, so that the device can be attached to the middle frame 9 without rattling.

[0008]

FIG. 1 is an exploded perspective view showing an entire embodiment of the present invention. As shown in FIG. 3, the plate frame 1 disposed on the front side of the construction surface is formed in a round shape, and has an opening 2 formed substantially at the center. Legs 3 having a U-shaped cross section are integrally formed on both sides of the rear surface of the plate frame 1 so that the legs 3 are inserted into circular holes formed in the construction surface.

A screw 5 having a screw 4 made of synthetic resin at its base is inserted through the insertion hole 6 of the plate frame 1 and the leg 3. It is screwed. And by tightening screw 5,
The construction material is sandwiched between the periphery of the rear surface of the plate frame 1 and the clip 7 which is turned so as to protrude outward, and the plate frame 1 is attached to the construction material. Further, screw holes 8 for directly screwing to the construction surface are formed on both sides of the plate frame 1.

At four corners of a middle frame 9 which is removably mounted in the opening 2 of the plate frame 1, locking claws 10 are provided as shown in FIG.
Are integrally formed, a locking recess 11 is formed inside the opening 2 of the plate frame 1, the middle frame 9 is arranged in the opening 2 of the plate frame 1, and the locking claw 10 is engaged. The middle frame 9 is detachably attached to the plate frame 1 by being inserted and locked in the recess 11.

A switch 14 is provided in the middle frame 4. A pair of locking projections 15 protruding from both sides of the switch 14 are inserted into and locked in the locking holes 13 of the middle frame 4. , Switch 14 is detachably mounted on the middle frame 9. The middle frame 9 is large enough to mount two switches 14, but in the present embodiment, one switch 14 is mounted. In this case, the locking projections 15 of the switch 14 are locked in the two locking holes 13 inside the middle frame 9.

The middle frame 9 is used for a switch 14 such as a piano-operated push button switch.
Two sets of locking holes 13 are formed on both sides,
Can be attached to two. Switch 14 to 2
The inner locking hole 13 is formed longer than the outer locking hole 13 in order to adjust the pitch so that the middle frame 9 is shared between the case where one is mounted and the case where one is mounted.

Further, a bending deformation preventing projection C protrudes from an outer surface at the center in the longitudinal direction of one side piece 12 of the middle frame 9.
When the inner frame 9 is fitted into the opening 2 of the plate frame 1 and attached, the bending deformation preventing projection C comes into contact with the inner surface of the plate frame 1. Accordingly, even when the handle 22 of the switch 14 is pressed to apply an external force and the side piece 12 receives a force to spread outward, the deformation can be prevented by the bending deformation prevention projection C. Then, the middle frame 9 is widened, and the locking of the locking hole 13 and the locking projection 15 is released, so that the switch 1
4 does not come off.

In addition, as shown in FIG. 2, rattling preventing dowels A projecting outward are provided at appropriate places on the outer surface of the inner frame 9 (eight outer surfaces in this embodiment). When the frame 9 is fitted into the opening 2 of the plate frame 1 and attached, the dowel A for preventing rattling is in contact with the inner surface of the plate frame 1 so that the inner frame 9 is attached to the plate frame 1 without rattling. And the middle frame 9 can be positioned and mounted at a predetermined position.

A dowel B for preventing rattling, which protrudes inward as shown in FIG. 2, is provided at an appropriate position on the inner surface of the middle frame 9 (four inner positions in this embodiment). The dowel B for preventing rattling when the fitting 14 is fitted in the middle frame 9 is attached to the outer surface of the switch 14 and the switch 1 is attached to the middle frame 9.
The switch 14 can be mounted without rattling and the switch 14 can be positioned and mounted at a predetermined position.

A metal fireproof panel 16 as shown in FIG. 5 is mounted on the front surface of the plate frame 1, and a hole 17 for exposing the switch 14 is formed in the center. In addition, around the refractory plate 16, the screw 5
And a semicircular hole 19 for escaping a screw screwed into the screw hole 8 are formed.
Holes 2 of the plate frame 1 are provided at four places around the periphery of the fireproof panel 16.
The hook 21 is formed so as to be inserted and locked at 0.

An operation handle 22 detachably mounted on the upper surface of the switch 14 is formed in a disk shape, and an operation mark 23 for pushing operation with a fingertip is formed on one end of the handle 22. A display window 24 is formed at the other end of the handle 22. A display unit 25 for lighting and displaying is provided on the upper surface of the switch 14. A lens 26 for condensing the light of the display and transmitting the light to the display window 24 is provided on the handle 2.
2 is attached to the lower surface.

A decorative frame 28 having an opening 27 slightly larger than the handle 22 is formed in a round frame shape. As shown in FIG. 7, a locking claw 29 is integrally formed on the back surface. ing. The locking claw 29 is inserted and locked in a locking recess 30 formed in the plate frame 1 so that the decorative frame 28 is detachably mounted.

As shown in FIG. 7 showing the back of the decorative frame 28, a rib 31 is formed around the back of the decorative frame 28 for guiding the fitting frame 31 into the plate frame 1.
A rib 32 for concealing the inside is integrally formed along.

In the assembly, the switch 14 can be fixed to the plate frame 1 in the procedure of mounting the switch 14 on the intermediate frame 9 and mounting the intermediate frame 9 on the plate frame 1.

The switch 14 has a structure as shown in FIG. That is, a push button 33 that can be moved in the vertical direction by being pushed by the handle 22, a spring 34 that urges the push button 33 upward, and a laterally movably moved by the spring 34 to the lower surface of the push button 33. The slider 35 includes a mounted slider 35, a reversing handle 36 that reverses when the slider 35 moves downward, and the like.

When the slider 35 moves downward, the engaging projection 37 of the reversing handle 36 is urged to rotate the reversing handle 36, and the rotation of the reversing handle 36 causes the engaging projection 37 to engage with the slider 35. By pressing the joint, the slider 35 is moved in the horizontal direction. When the reversing handle 36 rotates and reverses, the coil spring 3
The opening / closing plate 40 connected at 9 is inverted, and the contact is switched.

Next, the mounting structure and operation of the handle 22 will be described. 8 to 10, the handle 22
Fulcrum rib 4 having elasticity at the time of instrument operation on one end side of the lower surface of
A pair of stopper ribs 42 are provided on the other end side, and a pair of stopper ribs 42 having elasticity at the time of operation return are provided on the other end side. A rib 43 serving as a stopper at the time of operation is formed outside the stopper rib 42, and an action point rib 44 for pressing the projection 45 of the push button 33 of the switch 14 integrally projects at the center of the lower surface of the handle 22. It is set up.

A handle 2 is provided at one end of the upper surface of the switch 14.
A recess 46 into which the two fulcrum ribs 41 are inserted and supported is formed, and a recess 47 into which the stopper rib 42 is inserted is formed at the other end. Here, the handle 22 has the edge 42a of the stopper rib 42 locked at the inner corner,
The handle 22 is prevented from falling off.

When the operation mark 23 of the handle 22 is pressed with a fingertip, as shown in FIGS. 8 and 10, the rotation is made about the fulcrum rib 41 and the action point rib 44 is moved to the projection 45 of the push button 33 of the switch 14. To open and close the switch 14 as described above. When the pushing operation of the handle 22 is stopped, the handle 22 returns, and the contact keeps its state. When the handle 22 is pressed again, the push button 33 is pressed and the contact is reversed and returned.

As shown in FIG. 5, the refractory panel 16 is formed by bending the claws 21 at four places on the outer peripheral portion of the refractory panel 16 and the outer surfaces of the claws 21 are cut and raised by the claws 54. Has formed. Therefore, when the refractory panel 16 is mounted on the front surface of the plate frame 1 and the claws 21 are inserted into the holes 20, the claws 5
4 is locked to the inner surface of the hole 20 so that the fireproof panel 16
Can be securely fixed to the plate frame 1.

On the outer peripheral portion of the fireproof panel 16, square holes 51 are formed at four places for escape for inserting the locking claws 29 of the decorative frame 28. Therefore, the decorative frame 28 can be attached to the plate frame 1 without the fire panel 16 being in the way.
Can be fixed.

Further, a square hole 17 is formed in the center of the fireproof panel 16 as described above, so that the front surface of the switch 14 is exposed from the hole 17 to facilitate operation. Further, the shape of the hole 17 can be processed according to the shape of the instrument used.

The size of the hole 18 through which the screw 5 is inserted is larger than the head of the screw 5, so that there is a possibility that the fireproof panel 16 alone may fall off. Therefore, a convex portion 52 is provided so as to project inward from both sides of the inner edge of the hole 18. Convex part 52
Since the distance between them is smaller than the head of the screw 5, the head of the screw 5 is hooked on the projection 52, so that the fireproof panel 16 alone can be prevented from falling off.

On the other hand, when the plate frame 1 is directly attached to the construction surface, the holes 19 of the refractory panel 16 through which screws are inserted also have the same convex portions 53 as those described above. Also in this case, the single fireproof panel 16 can be prevented from falling off.

A tongue-shaped convex portion 53 is formed in the hole 19 of the fireproof panel 16. When the plate frame 1 is directly attached to the construction surface with a screw, the convex portion 53 receives the head of the screw. ,
The plate frame 1 together with the fireproof panel 16 can be attached to the construction surface. Therefore, even if a synthetic resin molded part such as the decorative frame 28 burns in the event of a fire, the fireproof panel 16 is fixed to the construction surface with screws, so that the mounting holes on the construction surface are not exposed. , Can prevent the spread of flame.

Next, another embodiment of the present invention will be described with reference to FIG. In this embodiment, an outlet 55 is used instead of the switch 14 as an instrument, and the cover 55a and the body 5 are used.
5b is assembled to the assembly frame 56 for assembling and joining.
Is formed. An elastic piece is provided on one side piece 12 of the middle frame 9 so that one locking projection 15 of the outlet 55 can be locked freely, and the other locking projection 15 is locked with a pair of locking pieces of the other side piece 12. The holes 13 are inserted and locked. This configuration is the same as the structure of a general wiring device mounting frame. When the outlet 55 is removed, the outlet 55 can be removed by bending the elastic piece outward with the tip of a screwdriver or the like.

Also in the case of this embodiment, a dowel A for preventing rattling is provided on the outer surface of the middle frame 9 so that the middle frame 9 is fitted into the opening 2 of the plate frame 1 and attached. The dowel A for preventing sticking can be attached to the inner surface of the plate frame 1 so as not to rattle. A dowel B for preventing rattling is protruded from the inner surface of the inner frame 9, and the dowel B for preventing rattling comes into contact with the outer surface of the outlet 55 when the outlet 55 is fitted in the inner frame 9 and attached. Outlet 55
It can be installed without rattling.

The refractory panel 16 is basically the same as the above embodiment, except that a step portion 60 is provided at the center of the refractory panel 16 by one step. Further, a through hole 57 into which the tip of a driver or the like is inserted is formed in the outer periphery of the step portion 60.

In this embodiment, since the outlet 55 is attached, a decorative cover 59 is used in place of the handle 22 of the above embodiment, and the decorative cover 59 is used.
Are detachably attached to the middle frame 9. This makeup cover 5
In the center of 9 is a hole 58 for exposing the outlet 55
Is provided.

[0036]

As described above, according to the present invention, the ratchet preventing dowel is provided on the inner surface of the middle frame so that the rattle preventing dowel is in contact with the outer surface of the appliance. Can be mounted without rattling, so that
There is no play between the frame and the device , so that these members can be positioned and mounted in a predetermined position. In particular, in the case of a switch series equipped with a switch as a device, the handle is operated. The operation failure at the time is eliminated.

[Brief description of the drawings]

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

2A and 2B show a middle frame of the above, wherein FIG. 2A is a plan view, FIG. 2B is a front view, and FIG. 2C is a side view.

FIG. 3 is an enlarged perspective view of a plate frame and a clip metal according to the first embodiment.

FIG. 4 is an enlarged perspective view of the middle frame and the switch according to the first embodiment;

FIG. 5 is an enlarged perspective view of the refractory panel and screws according to the first embodiment.

FIG. 6 is an enlarged perspective view of the decorative frame and the handle of the above.

FIG. 7 is a rear view of the decorative frame.

FIG. 8 is a cross-sectional view of the switch.

FIG. 9 is a sectional view of the handle.

FIG. 10 is a sectional view of the whole assembled state of the above.

FIG. 11 is an exploded perspective view of another embodiment of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plate frame 2 Opening 9 Medium frame 14 Switch 55 Outlet A Dowel for preventing rattling B Dowel for preventing rattling

Continuing from the front page (72) Inventor Masaaki Nakamura 2856 Shiratsuka-cho, Tsu-shi, Mie Prefecture Asahi Denki Kogyo Co., Ltd. (72) Inventor Shigenori Kato 2856 Shiratsuka-cho, Tsu-shi Mie Prefecture Asahi Denki Kogyo Co., Ltd. (56) Reference Document JP-A-1-103113 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02G 3/02

Claims (2)

(57) [Claims] 1. An apparatus having an opening at a substantially center and fixed to a construction surface.
Plate frame and the plate frame
A middle frame detachably attached to the plate frame, and inside the middle frame
Switches and controls that are embedded and detachably attached to the middle frame
A wiring device equipped with a device such as a cent
On the inner surface of the middle frame
The dowel for rattling prevention is provided by projecting the dowel for rattling.
Characterized in that the wire is in contact with the outer surface of the device
Utensils. 2. An apparatus having an opening at a substantially center and fixed to a construction surface.
Into a round plate frame and into the opening of the plate frame
A middle frame that is rarely detachably attached to the plate frame, and a middle frame
Switch that is fitted inside and detachably attached to the middle frame
A round wiring device equipped with devices such as
And attach the device to the middle frame by locking the locking projections and locking holes.
And a dowel is provided on the inner surface of the middle frame to prevent rattling.
It is characterized in that the dowel for preventing rattling is in contact with the outer surface of the device.
Wiring equipment to be considered.