JP3436545B2 - Wiring equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring device for disposing devices such as switches and outlets on a construction surface. 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. And this kind of wiring equipment is a plate frame fixed to the building material, a middle frame mounted inside the plate frame and mounting a device such as a switch, an operation handle mounted on the switch, And a decorative plate mounted on the plate frame. [0003] A scissor fitting is screwably mounted on the tip of a screw inserted from the front of the plate frame, and by rotating the screw, the construction material is sandwiched between the back of the plate frame and the front of the scissor fitting. , The plate frame was fixed to the construction material. [0004] In such a conventional wiring device, since the area of the scissors is small, there are the following problems. That is, when the appliance is used as an outlet, when the cord is forcibly pulled out by attaching to a thin gypsum board (9 mm, 12 mm, or the like), the scissor fittings cut into the wall and come off. [0005] The present invention has been made in view of the above points, and has as its object to provide a wiring device using scissor fittings having high mounting strength. According to a first aspect of the present invention, there is provided a plate frame having an opening at a substantially center and fixed to a construction surface, and a plate frame which is detachably attached to the opening of the plate frame and is provided inside. A middle frame for detachably mounting devices such as switches and outlets, a decorative plate that exposes the front of the device and is detachably mounted on the front of the plate frame, and a screw attached to the tip of a screw inserted from the front of the plate frame. It is equipped with scissor metal fittings that can be freely mounted, and by rotating the screw, the construction material can be held between the back of the plate frame and the front of the scissor metal and the plate frame can be fixed to the construction material. A scissor fitting is formed in order to increase the contact area, and two locking holes are provided on each side of the inner frame for mounting two instruments, one for each instrument.
By piercing, two sets of two instruments are pierced, and
In order to share the middle frame between the case where one piece is mounted and the case where one piece is mounted, a total of eight holes are drilled on each side of the middle frame.
When attaching one device to the center of the middle frame of the locking holes
In which the inner four engagement holes that are used and the outer four width than we formed long. [0007] Since the contact area of the scissors with the building material is increased and the force applied to the building surface is dispersed, sufficient strength is ensured even when the cord is forcibly pulled out. be able to. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of the whole, in which a plate frame 1 disposed on the front side of a construction surface is formed in a round shape, and an opening 2 is formed substantially in the center. On both sides of the back surface of the plate frame 1, legs 3 each having a U-shaped cross section for inserting holes in the construction surface are integrally provided. A screw 5 with a screw 4 made of synthetic resin mounted on its base is provided through an insertion hole 6 of the plate frame 1, and a scissor fitting 7 is screwed to the tip of the screw 5 so as to be able to advance freely. is there. By tightening the screw 5 disposed inside the leg 3, by holding the building material in the back and surrounding scissors fitting 7 of the plate frame 1, the plate frame 1 is disposed in erecting surface. Screw holes 8 for screwing directly to the construction surface are formed on both sides of the plate frame 1. Here, the size (the contact area of the construction surface) of the scissors metal fitting 7 of the present invention is made larger than before. Conventionally, the horizontal length between the screw hole and the end is 15 mm and the vertical direction is 8 mm, but the area is increased to 18.5 x 10.5 mm to increase the contact area with the construction surface. ing. Therefore, since the force applied to the wall surface is dispersed, it is possible to secure sufficient strength against forcibly pulling out the cord when the appliance is used as an outlet. Inside the opening 2 of the plate frame 1, a middle frame 9 is provided.
Instruments such as switches and outlets through the Ru is detachably attached. Locking claws 10 are integrally formed on both sides of both sides of the middle frame 9, and locking recesses 11 into which the locking claws 10 are inserted and locked are formed inside the opening 2 of the plate frame 1. Is formed. A pair of locking holes 1 are formed in side pieces 12 on both sides of the middle frame 9.
3 are perforated. A switch 14 is provided inside the middle frame 9 of the present embodiment , and a pair of locking projections 15 protruding on both sides of the switch 14
The switch 14 is detachably attached to the middle frame 9 by being inserted and locked in the third frame 3. The middle frame 9 is large enough to mount two switches 14, but in the case of FIG. 1, one switch 14 is mounted. In this case, the switch 1 is inserted into the two locking holes 13 inside the middle frame 9.
The fourth locking projection 15 is locked. The middle frame 9 is used when the instrument is a piano-operated push button switch 14, and is provided with a locking hole 1
3 is provided with two sets on both sides so that two switches 14 can be mounted. In order to share the middle frame 9 between the case where two switches 14 are mounted and the case where one switch 14 is mounted, the width of the inner locking hole 13 is made longer than that of the outside in order to adjust the pitch. A metal fireproof panel 16 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 the periphery, a circular hole 18 for screw 5 escape and a screw hole 8
A semicircular hole 19 for escape is formed. Claws 21 are formed at four places on the peripheral edge of the refractory panel 16 to be inserted and locked in the holes 20 of the plate frame 1. An operation handle 22 detachably mounted on the upper surface of the switch 14 is formed in a round shape, and a recess 23 for pushing operation with a fingertip is formed on one end side.
A display window 24 is formed at the other end. Switch 14
A display unit 25 for lighting and displaying is provided on the upper surface of the steering wheel 22, and a lens 26 for condensing the light of the display and transmitting the light to the display window 24 is attached to the lower surface of the handle 22. The decoration plate 28 bored slightly larger opening 27 than the handle 22 on the inside, it is formed in a round shape frame shape, as shown in FIG. 2, formed claw 29 on the back surface is integrally Have been. The locking claw 29 is inserted and locked in a locking recess 30 formed in the plate frame 1 so that the decorative plate 28 is detachably mounted on the plate frame 1. FIG. 2 shows the back of the decorative plate 28.
As shown in FIG. 3, a guide rib 31 is formed around the rear surface of the decorative plate 28 at the time of fitting with the plate frame 1.
Further, a rib 32 for hiding the inside is integrally formed along the opening 27. For assembly, the switch 14 is attached to the middle frame 9
, And the device such as the switch 14 can be fixed to the plate frame 1 in a procedure of mounting the middle frame 9 to the plate frame 1. Although the switch 14 is used as an appliance in FIG. 1, an outlet can of course be used. When an outlet is used, a decorative cover having a hole in the center is used instead of the handle 22 so as to expose the plug insertion hole. The switch 14 has a structure as shown in FIG. That is, the push button 33 which can be moved in the vertical direction by being pushed by the handle 22, a spring 34 for urging the push button 33 upward, and a laterally movably mounted on the lower surface of the push button 33 urged by the spring 34. And a reversing handle 36 that reverses when the slider 35 moves downward. 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 38, the slider 35 is moved in the lateral direction. When the reversing handle 36 rotates and reverses, the open / close plate 40 connected by the coil spring 39 reverses and switches the contact. Next, the mounting structure and operation of the handle 22 will be described. 3 to 5, a fulcrum rib 41 having elasticity at the time of instrument operation is provided on one end side of the lower surface of the handle 22.
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 during operation is provided outside the stopper rib 42.
An action point rib 44 for pressing the protrusion 45 of the push button 33 of the switch 14 is integrally provided at the center of the lower surface of the handle 22. As shown in FIGS. 1 and 3, a recess 46 is formed at one end of the upper surface of the switch 14 for inserting and supporting the fulcrum rib 41 of the handle 22, and a stopper rib 42 is formed at the other end. Is formed therein. Here, the handle 22 is connected to the edge 4 of the stopper rib 42.
2a is locked to the inner corner of the concave portion 47 to prevent the handle 22 from coming off. When the depression 23 of the handle 22 is pressed with a fingertip, as shown in FIGS. 3 and 5, the pivot 23 is rotated about the fulcrum rib 41, and the action point rib 44 is pushed by the push button 3 of the switch 14.
The switch 14 is opened and closed as described above by pressing the third protrusion 45. When the pressing 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. According to the first aspect of the present invention, as described above, a plate frame having an opening at substantially the center and fixed to a construction surface, a plate frame which is detachably attached to the opening of the plate frame, and A middle frame for detachably mounting devices such as switches and outlets, a decorative plate that exposes the front of the device and is detachably mounted on the front of the plate frame, and a screw attached to the tip of a screw inserted from the front of the plate frame. It is equipped with a scissor fitting that is mounted to move freely, and by rotating the screw, the construction material can be held between the back of the plate frame and the front of the scissor fitting and the plate frame can be fixed to the construction material, and the construction material and since those of forming a scissors fitting in order to increase the contact area, the contact area of the building material of the scissors fitting is increased, since the force applied to erecting surface is dispersed, even when unplugged code to forcibly, Enough strength Is achieved. In addition, two locking holes for mounting two instruments are provided on both sides of the inner frame for each set of one instrument.
By drilling two sets of two instruments, two pieces of equipment are installed
To use the middle frame for both
A total of 8 locking holes drilled 4 on each side of the frame
Of these, it is used when installing one device in the center of the middle frame
That since the inner four engagement holes formed outside the four it found from the width long, it is possible to share the middle frame in the case of mounting one to the case of mounting two instruments.

[Brief description of the drawings] FIG. 1 is an overall exploded perspective view of an embodiment of the present invention. FIG. 2 is a rear view of the decorative plate according to the first embodiment. FIG. 3 is a sectional view of the switch. FIG. 4 is a sectional view of the handle. FIG. 5 is an overall sectional view of the same. [Explanation of symbols] 1 Plate frame 2 opening 7 Scissor fittings 9 middle frame 14 switches 28 Makeup plate

──────────────────────────────────────────────────続 き Continued on 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 Pref. 56) References JP-A-1-103113 (JP, A) JP-A-3-54312 (JP, U) JP-A-2-60416 (JP, U) JP-A-61-126723 (JP, U) (58) ) Surveyed field (Int.Cl. ⁷ , DB name) H02G 3/00-3/04

Claims (1)

(57) [Claims] [Claim 1] A plate frame having an opening at substantially the center and fixed to a construction surface, and a switch, an outlet and the like removably attached to the opening of the plate frame and inside the plate frame. An inner frame for detachably mounting the appliance, a decorative plate that exposes the front of the appliance and is detachably attached to the front of the plate frame, and is attached to the tip of a screw inserted from the front of the plate frame so as to be freely screwed. It is equipped with a scissor fitting, and by rotating the screw, the construction material can be held between the back of the plate frame and the front of the scissor fitting and the plate frame can be fixed to the construction material, increasing the contact area with the construction material. Form scissors metal fittings on both sides of the middle frame,
A set of locking holes for mounting two instruments, one set per instrument
Two for each instrument by drilling two for each
In order to share the middle frame between the case where two units are mounted and the case where one device is mounted, four holes are drilled on both sides of the center frame.
Out of a total of 8 locking holes, set the instrument in the center of the middle frame
Four inner locking holes used when installing one
Four wiring devices, characterized in that formed it found than the width long.