JPH05276628A - Round-type wiring instrument - Google Patents

Abstract

PURPOSE:To install an outer frame on a plate frame without looseness. CONSTITUTION:A round-type wiring instrument is constituted of a plate frame 1, an inner frame, a switch, a plug socket, and a outer frame 28. In this instrument, a dowel 71 for preventing looseness is formed at an appropriate place on an outer face of a rising edge 70 which is formed extending over the entire outer face of the plate frame 1. A circumferential wall 31 hanging down extending over the entire outer surface of the outer frame 28 is engaged with the outer surface of the rising edge 70 of the plate frame 1 and the dowel 71 is caused to abut the inner face of the circumferential wall 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a round wiring device for arranging devices such as switches and outlets on a construction surface.

[0002]

2. Description of the Related Art Recently, a round wiring device has been proposed because a hole to be bored on a construction surface is changed from a square shape to a round shape, which facilitates the drilling work. In this type of round wiring equipment, a round plate frame having an opening in the center and fixed to the construction surface and a plate frame that is fitted into the opening of the plate frame and is detachably attached to the plate frame. It is configured by a middle frame, a device such as a switch or an outlet that is fitted into the middle frame and is detachably attached to the middle frame, and a decorative frame that covers the front surface of the plate frame. The decorative frame is fitted and attached to the front surface of the plate frame.

[0003]

However, since the plate frame and the decorative frame are formed of a synthetic resin molded product, they are expected to shrink during molding, so the basic size is set so that a gap is generated when they are assembled into each other and assembled. There is. Therefore, there is a problem that rattling occurs when actually assembled and assembled. In this type of switch-equipped switch as the device, when the decorative frame is displaced to the side where the condition is bad, the handle for operating the switch hits and malfunctions.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a round wiring device that can be attached to a plate frame without rattling the decorative frame. To provide.

[0005]

In order to achieve the above-mentioned object, the circular wiring apparatus of the present invention comprises a circular plate frame 1 having an opening 2 at substantially the center and fixed to a construction surface, and a plate frame 1 of the plate frame 1. A middle frame 9 that is fitted into the opening 2 and is detachably attached to the plate frame 1, and a device such as a switch 14 and an outlet 55 that is fitted into the middle frame 9 and detachably attached to the middle frame 9. In a round wiring device having a decorative frame 28 fitted on the front surface of the plate frame 1, the rattling of the outer surface of the rising edge 70 provided over the entire circumference of the plate frame 1 is prevented in place. A dowel 71 is provided in a protruding manner, and a peripheral wall 31 hanging down over the entire circumference of the decorative frame 28 is fitted onto the outer periphery of the rising edge 70 of the plate frame 1 and a rattle prevention dowel 71 is provided.
Is abutted against the inner surface of the peripheral wall 31.

[0006]

According to the above construction, the rattling prevention dowels 71 are provided at appropriate places on the outer surface of the rising edge 70 provided over the entire outer periphery of the plate frame 1, and the entire outer periphery of the decorative frame 28 is provided. The decorative wall 28 is prevented from rattling by fitting the peripheral wall 31 hanging down over the outer periphery of the rising edge 70 of the plate frame 1 and contacting the rattling prevention dowel 71 with the inner surface of the peripheral wall 31. It can be attached so that the dowel 71 does not rattle.

[0007]

FIG. 2 is an exploded perspective view showing the whole one embodiment of the present invention. The plate frame 1 arranged on the front surface of the construction surface is formed in a round shape as shown in FIG. 3, and an opening 2 is formed at the substantially center thereof. Legs 3 having a U-shaped cross section are integrally projected on both sides of the back surface of the plate frame 1, and the legs 3 are inserted into circular holes formed on the construction surface.

A screw 5 having a screw 4 made of synthetic resin attached to the base thereof is inserted into the through hole 6 of the plate frame 1 and the leg 3, and the tip of the screw 5 is attached to the sandwich metal fitting 7 arranged at the lower end of the leg 3. It is screwed. And by tightening the screw 5,
The plate frame 1 is attached to the building material by sandwiching the building material with the periphery of the back surface of the plate frame 1 and the sandwiching metal member 7 which is rotated so as to project outward. Further, on both sides of the plate frame 1, screw holes 8 for directly screwing the building frame are drilled.

As shown in FIG. 4, locking claws 10 are provided at the four corners of the middle frame 9 which is detachably mounted in the opening 2 of the plate frame 1.
Are integrally formed with each other, 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 arranged in the middle frame 9, and a pair of locking protrusions 15 projecting from both sides of the switch 14 are inserted and locked in the locking holes 13 of the middle frame 9. The switch 14 is detachably attached to the middle frame 9. The middle frame 9 has a size such that two switches 14 can be mounted, 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 provided on both sides, and a switch 14
Two can be attached. Switch 14 to 2
Since the middle frame 9 is shared between the case where one piece is attached and the case where one piece is attached, the inner locking hole 13 is formed longer than the outer one for pitch adjustment.

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 thereof. In addition, the screws 5 are provided around the fireproof plate 16.
A circular hole 18 for escaping the screw hole and a semicircular hole 19 for escaping the screw screwed into the screw hole 8 are formed.
The holes 2 of the plate frame 1 are provided at four locations on the periphery of the fireproof panel 16.
A claw 21 which is inserted and locked at 0 is formed.

An operating handle 22 detachably attached to the upper surface of the switch 14 is formed in a disk shape, and an operating mark 23 for pushing with a fingertip is formed at one end of the handle 22. A display window 24 is formed on the other end side of the handle 22. A display unit 25 for lit display is provided on the upper surface of the switch 14, and a lens 26 that collects the light of this display and transmits it 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, and as shown in FIG. 7, locking claws 29 are 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 can be detachably mounted. In addition, the makeup frame 28
As shown in FIG. 7 showing the rear face of the decorative frame 28, a peripheral wall 31 is formed around the rear face of the decorative frame 28 for guiding when it is fitted with the plate frame 1, and a rib for concealing the inside is formed along the opening 27. 32
Are integrally formed.

A rising edge 70 is formed on the upper surface of the outer periphery of the plate frame 1 so as to project upward over the entire circumference, and when the decorative frame 28 is fitted on the front surface of the plate frame 1, it rises. On the outer periphery of the edge 70, the peripheral wall 31 of the decorative frame 28
Is located. Plate frame 1 and decorative frame 2
Reference numeral 8 is a synthetic resin molded product, and in consideration of shrinkage at the time of molding, a basic dimension in which a gap is formed between the inner surface of the peripheral wall 31 of the decorative frame 28 and the outer surface of the rising edge 70 of the plate frame 1. Is set to.

In the case of the present invention, as shown in FIG. 1, a rattling prevention dowel 71 is projected on the outer surface of the rising edge 70 of the plate frame 1, and when the decorative frame 28 is fitted on the plate frame 1. The rattling prevention dowel 71 is attached to the inner surface of the peripheral wall 31 of the decorative frame 28 so that the decorative frame 28 does not rattle. In the case of the present embodiment, two rattling prevention dowels 71 are provided on the outer periphery of the rising edge 70, and are provided at positions of 180 ° rotational symmetry. The A dimension between the outer surfaces of the two rattling prevention dowels 71 is set to be the same as the B dimension which is the inner diameter of the peripheral wall 31, or the A dimension is set to be slightly larger.

By the way, the switch 14 has a structure as shown in FIG. That is, a push button 33 that is pushed by the handle 22 and is movable in the vertical direction, a spring 34 that biases the push button 33 upward, and a push button 33 that is biased by the spring 34 and is movable laterally on the lower surface of the push button 33. It is composed of a slider 35 mounted and a reversing handle 36 and the like which is reversed by the downward movement of the slider 35.

When the slider 35 moves downward, the engaging protrusion 37 of the reversing handle 36 is urged to rotate the reversing handle 36, and the engaging protrusion 37 engages with the slider 35 by the rotation of the reversing handle 36. The joint portion is pushed to move the slider 35 laterally. When the reversing handle 36 rotates and reverses, the coil spring 3
The open / close plate 40 connected at 9 is inverted to switch the contacts.

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 operation of the instrument on one end side of the lower surface of the
A pair of stopper ribs 42 is provided vertically on the other end side, and a pair of stopper ribs 42 having elasticity at the time of operation return are vertically provided. A rib 43 serving as a stopper at the time of operation is formed on the outside of the stopper rib 42, and an action point rib 44 for pressing the protrusion 45 of the push button 33 of the switch 14 is integrally projected at the center of the lower surface of the handle 22. It is set up.

The handle 2 is attached to one end of the upper surface of the switch 14.
A recess 46 into which the second fulcrum rib 41 is inserted and supported is formed, and a recess 47 into which the stopper rib 42 is inserted is formed on the other end side. Here, in the handle 22, the edge 42a of the stopper rib 42 is locked to the inner corner,
The handle 22 is prevented from coming off. When the operation mark 23 of the handle 22 is pushed with a fingertip, as shown in FIGS. 8 and 10, the fulcrum rib 41 is rotated as a fulcrum, and the action point rib 44 presses the protrusion 45 of the push button 33 of the switch 14. hand,
The switch 14 is opened and closed as described above. When the pushing operation of the handle 22 is stopped, the handle 22 returns and the contact holds the state. When the handle 22 is pushed again, the push button 33 is pressed and the contacts are reversed and returned.

As shown in FIG. 5, the fire-resistant panel 16 is formed by bending the claws 21 at four locations on the outer peripheral portion of the fire-resistant panel 16, and the outer surface of the claw 21 is cut and raised by the alligator 54. Is forming. Therefore, when the fireproof panel 16 is mounted on the front surface of the plate frame 1 and the claw 21 is inserted into the hole 20, the claw portion 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.

Further, in the outer peripheral portion of the fireproof panel 16, square holes 51 are formed at four locations for the purpose of allowing the locking claws 29 of the decorative frame 28 to pass therethrough. Therefore, the decorative frame 28 is attached to the plate frame 1 without disturbing the fireproof panel 16.
Can be fixed to. Further, as described above, a square hole 17 is formed in the center of the fireproof panel 16 so that the front surface of the switch 14 is exposed from the hole 17 so that it can be easily operated. Further, the shape of the hole 17 can be processed according to the shape of the instrument used.

Further, the size of the hole 18 through which the screw 5 is inserted is larger than the head of the screw 5, so that the fireproof panel 16 alone may fall off. Therefore, the protrusions 52 are provided so as to project inward from both sides of the inner edge of the hole 18. Convex portion 52
Since the dimension between them is smaller than the head of the screw 5, the head of the screw 5 is caught by the convex portion 52, so that the refractory 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 same convex portion 53 as the above is formed in the hole 19 of the fireproof panel 16 through which the screw is inserted. Also in this case, the fireproof panel 16 alone can be prevented from falling off. Next, another embodiment of the present invention will be described with reference to FIG. In this embodiment, an outlet 5 is used as a device instead of the switch 14.
5, the engaging projection 15 is formed on the assembly frame 56 for assembling and coupling the cover 55a and the body 55b. An elastic piece is provided on one side piece 12 of the middle frame 9 to provide an outlet 5
One of the locking protrusions 15 of 5 is lockable, and the other locking protrusion 15 is inserted and locked in the pair of locking holes 13 of the other side piece 12. This structure is the same as the structure of the mounting frame for general wiring equipment, and the outlet 55
When removing, the outlet 55 can be removed by bending the elastic piece outward with the tip of a screwdriver or the like.

Also in this embodiment, a rattling prevention dowel 71 is provided on the rising edge 70 of the plate frame 1, and when the decorative frame 28 is fitted on the plate frame 1, the inner surface of the peripheral wall 31 of the decorative frame 28 is covered. The decorative frame 28 can be attached so that the rattle prevention dowel 71 does not come in contact with the decorative frame 28. The fireproof panel 16 is basically the same as that of the above-mentioned embodiment, but a stepped portion 60 which is raised by one step is provided at the center of the fireproof panel 16. Further, a through hole 57 for inserting the tip of a driver or the like is formed in the outer periphery of the step portion 60.

Further, in the case of the present embodiment, since the outlet 55 is attached, the decorative cover 59 is used instead of the handle 22 of the above-mentioned embodiment, and the decorative cover 59 is used.
Is detachably attached to the middle frame 9. This makeup cover 5
A hole 58 for exposing the outlet 55 is provided in the center of 9.
Is provided. FIG. 12 shows another embodiment. In the case of this embodiment, the decorative plate A in which the decorative frame 28 and the decorative cover 59 are integrated is used. Again,
Anti-rattle dowel 7 on rising edge 70 of plate frame 1
1 is provided, and the decorative plate 28 can be attached so that the rattling prevention dowel 71 abuts on the inner surface of the peripheral wall 31 of the decorative frame 28 when the decorative plate A is fitted on the plate frame 1. ..

[0027]

As described above, according to the present invention, the rattling prevention dowels are provided at appropriate positions on the outer surface of the rising edge provided over the entire outer circumference of the plate frame as described above, and the outer circumference of the decorative frame is provided over the entire circumference. Since the peripheral wall that hangs down is fitted on the outer periphery of the rising edge of the plate frame and the rattling prevention dowel is in contact with the inner surface of the peripheral wall, the rising edge and the peripheral wall when the decorative frame is fitted on the plate frame. Even if the basic dimensions are such that a gap is created between the decorative frame and the rattling prevention dowel, the decorative frame can be attached so that it does not rattle when it comes into contact with the inner surface of the peripheral wall. Since it can be attached without rattling, the decorative frame can be accurately attached at a predetermined position, and in particular, in the case of a switch series with a switch attached as an instrument, there is no operation failure when operating the handle. Ah .

[Brief description of drawings]

1A and 1B show an essential part of an embodiment of the present invention, FIG. 1A is a plan view of an essential part of a plate frame, and FIG.

FIG. 2 is an exploded perspective view showing the whole of the above.

FIG. 3 is an enlarged perspective view of the plate frame and the sandwich metal fitting of the same.

FIG. 4 is an enlarged perspective view of the middle frame and the switch of the same.

FIG. 5 is an enlarged perspective view of the above fireproof panel and screws.

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

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

FIG. 8 is a sectional view of the above switch.

FIG. 9 is a sectional view of the above handle.

FIG. 10 is a cross-sectional view of an entire assembled state of the above.

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

FIG. 12 is a perspective view of a decorative plate according to still another embodiment of the same.

[Explanation of symbols]

 1 Plate Frame 2 Opening 9 Middle Frame 14 Switch 28 Decorative Frame 31 Peripheral Wall 55 Outlet 70 Rising Edge 71 Rattling Prevention Dowel

Front page continuation (72) Inventor Shigenori Kato 2856 Shiratsuka-cho, Tsu City, Mie Prefecture Asahi Denki Kogyo Co., Ltd.

Claims (1)

[Claims] 1. A round plate frame having an opening at substantially the center and fixed to a construction surface, a middle frame fitted in the opening of the plate frame and detachably attached to the plate frame, and a middle frame. In a round wiring device including a device such as a switch or an outlet that is fitted inside and is detachably attached to the middle frame, and a decorative frame that is fitted on the front surface of the plate frame, the entire circumference of the outer periphery of the plate frame. A rattling-preventing dowel is provided in a proper position on the outer surface of the rising edge provided over the outer circumference of the decorative frame, and a peripheral wall that hangs over the entire circumference of the decorative frame is fitted on the outer circumference of the rising edge of the plate frame. A round-shaped wiring device characterized in that the rattling prevention dowel is brought into contact with the inner surface of the peripheral wall.