JPH05276630A - Round-type wiring instrument - Google Patents

Abstract

PURPOSE:To prevent a bad operation without a fall in the outer appearance. CONSTITUTION:A round-type wiring instrument is constituted of a plate frame, a switch, an inner frame, a handle 22 and an outer frame 28. In this instrument, the inner frame is installed on the plate frame, being deviated from the central position so that a space S formed between the outer surface of the handle 22 and the outer frame 28 is narrower at the handle rotation supporting side and wider at the handle pressing side. When pressing the handle 22, care should be taken so as not to cause the handle 22 to be caught on the outer frame 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a round-shaped wiring device for mounting a device such as a switch 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 that has an opening in the center and is fixed to the construction surface, and a switch that can be detachably mounted inside the plate frame opening and detachable It is composed of a middle frame to be mounted on the switch, a handle for detachably mounting the switch on the upper surface of the switch, and a decorative frame to be mounted on the plate with the handle positioned inside. Conventionally, when the middle frame is attached to the plate frame, the middle frame is attached to the plate frame so that the center of the plate frame and the center of the middle frame match, and as shown in FIG. 11, the center line of the decorative frame 28 and the handle. The center line of 22 matches, and a gap S having the same width is formed between the decorative frame 28 and the handle 22 over the entire circumference. That is, the width A of the gap S on the side that is the fulcrum of rotation when the handle 22 is rotated is the same as the width B of the gap S on the side that pushes and operates the handle 22.

[0003]

Incidentally, the handle 2
When the user operates 2, the right side moves back and forth with the left side of FIG. 11 as a fulcrum, so that the handle 22 is all caught on the right side. For this reason, if the width B of the gap S on the right side is narrow as in the above-mentioned conventional example, an operation error of the handle 22 occurs. If the gap S provided between the decorative frame 28 and the handle 22 is unnecessarily wide, the appearance will be deteriorated.

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 capable of preventing a defective operation without deteriorating the appearance.

[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 which is detachably mounted in the opening 2 and in which the switch 14 is detachably mounted inside, and a handle 22 for operating the switch 14 which is detachably mounted on the upper surface of the switch 14.
In the round wiring device including the decorative frame 28 that is mounted on the plate frame 1 with the handle 22 positioned inside, the gap S formed between the outer periphery of the handle 22 and the decorative frame 28 is The middle frame 9 is attached to the plate frame 1 while being displaced so that the side that serves as the pivot point becomes narrower and the side that presses the handle 22 becomes wider.

[0006]

According to the above construction, since the gap S on the side where the handle 22 is pushed is widened, the handle 22 is prevented from being caught on the decorative frame 28 when the handle 22 is pushed, and the operation is performed. No defects will occur.

[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 disposed in the middle frame 4, 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 4. 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 in the case of a switch 14 such as a piano-operated push button switch. Two sets of locking holes 13 are provided on both sides, and two switches 14 are mounted. You can do it. Since the middle frame 9 is shared between the case where two switches 14 are mounted and the case where one switch is mounted, 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
7, which shows the back surface of the decorative frame 28, a rib 31 for guiding when fitting the plate frame 1 is formed around the back surface of the decorative frame 28, and a rib for hiding the inside along the opening 27. 32
Are integrally formed.

In the assembly, the switch 14 can be fixed to the plate frame 1 by the procedure of mounting the switch 14 on the middle frame 9 and mounting the middle frame 9 on the plate frame 1. By the way, the switch 14 has a structure as shown in FIG. That is, the push button 33 that is pushed by the handle 22 and is movable in the vertical direction, the spring 34 that biases the push button 33 upward, and the spring 34 that is biased by the spring 34 and is movable laterally on the lower surface of the push button 33. Slider 3 installed
5 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.

When the middle frame 9 is attached to the plate frame 1, it is attached by locking the locking claws 10 of the middle frame 9 into the locking recesses 11 of the plate frame 1. The positions of the locking claws 10 to the locking recesses 11 are shifted so that the center of the middle frame 9 is attached to the rotation fulcrum side of the handle 22 so as to be slightly displaced from the center. By attaching the middle frame 9 in this manner, the handle 22 is attached so that the center of the handle 22 deviates from the center of the decorative frame 28. That is, as shown in FIG. 1, the center line b of the handle 22 is deviated from the center line a of the decorative frame 28, and the gap S between the decorative frame 28 and the handle 22 is on the rotation fulcrum side of the handle 22. It is narrow and wide on the side of the operating mark 23 of the handle 22. The width A of the gap S on the turning fulcrum side of the handle 22 is narrow, and the width B of the gap S on the operation mark 23 side is wide.
As a result, when the operating mark 23 of the handle 22 is pressed to operate the handle 22, the handle 22 is moved to the decorative frame 2.
The handle 22 can be smoothly operated without being caught on the 8.

As shown in FIG. 5, the fireproof panel 16 is formed by bending the claws 21 at four locations on the outer periphery of the fireproof panel.
The outer surface of the claw 21 is formed by cutting and raising the alligator 54. 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 54 is locked to the inner side surface of the hole 20, so that the fireproof panel 16 is securely attached to the plate frame 1. Can be fixed to.

Further, on the outer peripheral portion of the fireproof panel 16, square holes 51 are formed at four locations for the purpose of releasing the locking claws 29 of the decorative frame 28. 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.

[0024]

As described above, according to the present invention, the plate frame is formed so that the gap formed between the outer periphery of the handle and the decorative frame becomes narrower on the side serving as the pivot fulcrum of the handle and wider on the side for pressing the handle. Since the inner frame is mounted with a shift, the handle will not get caught in the decorative frame when the handle is pushed, even if the gap between the decorative frame and the handle does not deteriorate the appearance. In addition, there is no possibility that an operation error may occur when the handle is operated.

[Brief description of drawings]

FIG. 1 is a plan view showing a main part of an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing an entire embodiment of the present invention.

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 a plan view of a conventional example.

[Explanation of symbols]

 1 Plate Frame 2 Opening 9 Middle Frame 14 Switch 22 Handle 28 Decorative Frame S Gap

Claims (1)

[Claims] 1. A round plate frame having an opening at substantially the center and fixed to a construction surface, and a middle frame detachably mounted on the opening of the plate frame and detachably mounting a switch inside. In a round wiring device equipped with a handle for detachably mounting the switch on the upper surface of the switch and a decorative frame to be mounted on the plate frame with the handle positioned inside, the outer periphery of the handle and the decorative frame A circular wiring characterized in that the inner frame is mounted so as to be displaced with respect to the plate frame so that the gap formed between the plate frame becomes narrower on the side serving as the pivot of the handle and wide on the side for pressing the handle. Instrument.