JP3433528B2 - Insulation support and 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 an insulating support for mounting a wiring device such as a switch or an outlet on a wiring box in an insulating state, and a wiring device using the insulating support.

[0002]

2. Description of the Related Art Conventionally, in a wiring device, an electric wire guided to a wiring box installed on a wall surface or the like is electrically connected to a wiring device such as a switch or an outlet, and the wiring device is attached to a support to connect the electric wire or the wiring device. In the wiring box, the support is attached to the wiring box, and the plate is attached to cover the front surface of the support.

As the support, there is an insulating support for preventing the leakage current of the wiring equipment from flowing through the support to the wiring box or the wall surface. The insulating support has a structure in which the whole is made of an insulator, a structure in which a metal support body is insulated, and the like, but the structure in which the whole is made of an insulator has a weak point in strength.

Conventionally, an insulating support having a structure for insulating a metal support body is disclosed in, for example, Japanese Patent Publication No. 56-33928.
As described in Japanese Patent Laid-Open Publication No. 2004-53242, an insulator is attached to a metal support body to insulate it. The insulator shall be provided with fold-back portions at both longitudinal ends of the cover that covers the back side of the support body that is attached to the wiring box, and each fold-back portion should be folded back to the front side of the support body and attached to the cover side. Is attached to the support body.

Further, FIG. 14 shows a state in which the insulating support 1 is attached to the wiring box 2 with screws 3. further,
FIG. 15 shows a positioning structure of the insulating support 1 and the plate 4. The insulating support 1 is provided with a positioning base 1b at the edge of the plate mounting hole 1a, and the mounting hole 4a of the plate 4 is provided.
Pins 4b that engage with both sides of the positioning base 1b are provided at the edge of the protrusion.

[0006]

However, since the conventional insulating support has a structure in which a separately molded insulating body is adhered to the support body, the strength of the bonding of the insulator to the support body is insufficient and the support as a whole is not supported. There is a problem in the lack of strength.

Further, as shown in FIG. 14, the wiring box 2 is formed with a recess 2a for positioning and fitting the insulating support 1. However, when the wiring box 2 is out of the standard, the insulating support 1 is longer. In this case, both ends of the insulating support 1 in the longitudinal direction protrude from the recess 2a, and the tightening of the screw 3 causes the insulating support 1 to be deformed.
Problems such as not being attached occur.

Further, as shown in FIG. 15, the positioning is performed by the positioning base 1b of the insulating support 1, the plate 4 and the pin 4b, but there is a problem that the pin 4b is easily broken.

The present invention has been made in view of the above points, and an insulating support capable of increasing the bonding strength between an insulator and a support and the strength of the entire support,
An object of the present invention is to provide an insulating support that can cope with different wiring boxes, an insulating support that can reliably position the plate, and a wiring device that uses these insulating supports.

[0010]

Means for Solving the Problems] The insulating support according to claim 1, wherein the center has an elongated opening, Rutotomoni provided wiring device attachment section for attaching the wiring device to the opening, both
The side edges and a metal support member bent portion is formed to protrude forward; having an opening Ru exposing the openings and wiring devices attached portion of the support member, the entire periphery of the support member An insulator integrally formed by insert molding with covering ;
The area inside both edges of the insulator,
Along the longitudinal sides of the front of the mouth and support
It is formed integrally with the insulator so as to cover the bent part of the body.
With ribs;

[0011] insulating support 請 Motomeko 2 described claim 1
In serial mounting of the insulating support, the insulator plate-like projection for the plate positioned on opposite sides of the mounting hole for plate mounting is one which is formed integrally.

[0012] insulating support according to claim 3, wherein the claim 1
Alternatively, in the insulating support described in 2 , the insulator has tapered surfaces formed at corners at both ends in the longitudinal direction on the mounting surface side of the wiring device.

A wiring device according to a fourth aspect comprises a wiring device; and the insulating support according to any one of the first to third aspects, which is attached to the wiring device.

A wiring device according to claim 5 is a wiring device;
An insulating support according to any one of claims 1 to 3 to which the wiring device is attached; and a plate attached to cover the insulating support.

[0015]

In the insulation support according to the first aspect, since the insulator is integrally formed by insert molding so as to cover the entire circumference of the support body, the strength of the bond between the insulator and the support body and the strength of the support as a whole. Is high. Furthermore, since the ribs along each side are formed integrally in the longitudinal direction of the opening of the support member in the insulator, the higher strength of the whole support. In addition, the ribs on the insulation support
Provided in an area that is inside from both side edges of the support body
Is formed so that the entire insulation support is wide.
It becomes easier to contact both side edges of the wiring box.
The adhesion strength can be increased.

The insulation support according to claim 2 , wherein
In addition to the action of one SL placing insulating support, since the insulator plate-like projection for the plate positioned on opposite sides of the mounting hole for plate mounting is formed integrally, at the time of plate mounting, protrusions Positioning can be performed reliably without breaking.

[0017] In the insulating support of claim 3, wherein, in addition to the effect of the insulating support of claim 1 or 2, wherein the tapered surface on the corner portion of the longitudinal end portions in the mounting surface side of the wiring devices to an insulator formed Therefore, even if the support length is slightly longer than the length of the support accommodating portion of the wiring box, the tapered surface can avoid contact with the edge of the support accommodating portion, and can correspond to a nonstandard wiring box. .

In the wiring device according to the fourth aspect , by using the insulating support according to any one of the first aspect and the third aspect , the strength is high when the insulating support is attached to the wiring device.

In the wiring device according to the fifth aspect , by using the insulating support according to any one of the first aspect and the third aspect , it is possible to obtain an effect that the wiring device can be firmly held.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an embodiment of the present invention will be described below with reference to FIGS.

As shown in FIGS. 7 and 8, the wiring device includes a plurality of switches 11 as wiring equipment and an insulating support.
It consists of 12 and plate 13. Then, as shown in FIG. 12, this wiring device is attached to a wiring box 14 as a wiring device installed on a wall surface or the like.

As shown in FIGS. 7 and 8, the switch 11 is provided with an oscillating switch body 22 on the front surface of the switch body 21 with the center as a fulcrum. The switch contact in the switch body 21 can be switched by pushing the side toward the switch body 21 side. On both sides of the switch body 21, the switch body 21 is held and the insulation support 12
A mounting bracket 23 for mounting on is attached.

The insulating support 12 is shown in FIGS.
As shown in (1), a vertically long metal support body 31 is integrally formed by insert molding so as to cover the entire circumference with an insulator 32.

The inside of the support body 31 is exposed from the insulator 32, and a vertically long opening is formed at the center of the exposed portion of the support body 31.
33 is formed, and wiring device attachment portions 34, to which the three switches 11 are attached via the attachment fittings 23, are arranged in parallel in the opening 33 at three positions in the vertical direction. Each wiring equipment attachment part 34
Is formed with an engaging portion 35 on one side of the opening 33 with which the mounting bracket 23 on one side of the switch 11 is engaged, and on the other side with a caulking portion which is caulkingly engaged with the mounting bracket 23 on the other side of the switch 11. 36 are formed. At the upper and lower edges of the opening 33, the front surface 31 of the support body 31
A protrusion 37 protruding to a is formed along the edge of the opening 33.

At both upper and lower ends of the support body 31, there are formed horizontally long hole portions 38 for attaching to the wiring box 14, and attachment holes 39 for attaching the plate 13.
Are formed. A female screw is formed on the inner circumference of the support body 31 facing the mounting hole 39 . The sides of the intake Tsukeana 39, mounting holes 40 for wood screw is formed.

Bent portions 31A projecting forward are formed on both side edges of the support body 31.

The insulator 32 is made of an insulative material such as PP (polypropylene), and has a front surface 31 of the support body 31.
It is integrally formed by insert molding so as to cover a, the back surface 31b and the entire circumference of the outer peripheral surface. Inside the insulator 32, the opening 33 of the support 31 and the wiring device mounting portion around the opening 33 are provided.
An opening 41 is formed to expose 34 and the like, and ribs that cover the bent portion 31A of the support body 31 are formed along both sides of the front surface of the opening 41.
42 is integrally formed to project.

At the upper and lower ends of the insulator 32, mounting holes 39, 40,
43 are formed respectively. The mounting hole 43 is for mounting on the wiring box 14, and is formed in a horizontally elongated hole shape so as to cover the inner periphery of the hole portion 38 of the support body 31. At the hole edge portion 44 on the front surface side of the mounting hole 43, a joint portion 45 that is joined to the front surface of the support body 31.
Are formed. The joint portion 45 is firmly engaged with the protrusion 37. In addition, a rectangular mount 46 is provided on the front side of the mounting hole 39.
Are slightly projected, and plate-shaped projections 47 for plate positioning are integrally projected on both sides of the mounting base 46.

Rear side of the insulator 32 (wiring equipment mounting surface side)
Thus, tapered surfaces 48 are formed at the corners of the upper and lower ends.
Also, the identification piece 49 is located downward from the center of the lower end of the insulator 32 on the back side.
Are formed to project.

As shown in FIGS. 7 to 11, the plate 13 includes a plate main body 51 that covers the switch 11 and the insulating support 12, and a switch operating body 52 provided in the center of the plate main body 51 facing the switch 11. Composed of.

The plate body 51 is made of a material having a strong weather resistance to ultraviolet rays such as AES, and a curved surface portion 53 is formed at the center of the front surface in the left-right direction, and the positions of the three switches 11 are located at the center of the curved surface portion 53. A vertically elongated opening 54 is formed corresponding to the above, and a mounting hole 55 is formed above and below the opening 54 at a position corresponding to the mounting hole 39 of the insulating support 12. Boss portions 56 of the respective mounting holes 55 are formed on the back surface of the plate body 51 so as to be fittable between the protrusions 47 of the insulating support 12. Further, a mounting edge portion 57 projecting to the back side is formed on the periphery of the plate body 51, and the mounting edge portion 57 is formed.
A packing 58 that is in close contact with the wiring box 14 is attached to the. The packing 58 has a notch 59 through which the identification piece 49 is inserted.

The switch operating body 52 is transparent or translucent, is made of a material such as elastomer, and liquid-tightly closes the opening 54 of the plate body 51. The switch operating body 52 is divided into three switch operating portions 61 corresponding to the positions of the three switches 11. Each switch operation part 61
Is formed with an operation surface portion 62 that covers the front surface of the switch 11, and rising edge portions 63,
64 are formed respectively.

In the wiring box 14, the electric wire on the power source side and the electric wire on the load side such as a lighting fixture are guided, an opening 71 is formed in the center of the front surface, and the insulating support 12 is formed at the edge of the opening 71. Recesses 72 are formed to fit both ends in the longitudinal direction, and screw holes 73 are formed in each of the recesses 72 at positions corresponding to the mounting holes 43 of the insulating support 12.

Next, the operation of this embodiment will be described.

First, in assembling the wiring device, the electric wire guided to the wiring box 14 is drawn out through the opening 71 and electrically connected to each switch 11, and each switch 11 is attached to each wiring device mounting portion 34 of the insulating support 12. While mounting the electric wire and each switch 11 inside through the opening 71 of the wiring box 14, both ends of the insulating support 12 in the longitudinal direction are fitted into the recesses 72 of the wiring box 14, and the mounting holes of the insulating support 12 are attached.
The screw 81 is screwed into the screw hole 73 of the wiring box 14 through 43, and the insulating support 12 is tightened and fixed to the wiring box 14.

At this time, as shown in FIG. 12, when the wiring box 14 is out of the standard, even if the length of the insulating support 12 is longer than the distance between the recesses 72, the insulating support 12 is longer.
Since tapered surfaces 48 are formed at both longitudinal ends of
This tapered surface 48 can avoid contact with the edge of the recess 72, prevent deformation of the insulating support 12, and cope with differences in the wiring boxes 14.

Further, the plate 13 is covered so as to cover the front surface of the insulating support 12, the boss portion 56 projecting from the back surface of the plate 13 is fitted between the pair of protrusions 47 of the insulating support 12, and the inside of the opening 54 is formed. Insert each switch 11 into.
Then, the screw 82 is screwed into the mounting hole 39 of the insulating support 12 through the mounting hole 55 of the plate 13, and the plate 13 is fastened and fixed to the insulating support 12. As a result, the packing 58 of the plate 13 comes into close contact with the wiring box 14.

Further, the identification piece 49 of the insulating support 12 is exposed to the outside from the notch 59 of the packing 58, and it is identified that the insulating support 12 is attached.

Each switch 11 faces the inside of each switch operating portion 61 of the switch operating body 52 of the plate 13, and the switch body 22 of each switch 11 can be visually recognized through the transparent or semitransparent switch operating body 52. .

Through the operation surface portion 62 of the switch operation portion 61,
By pushing the side of the switch 11 projecting forward of the switch body 22, the switch body 22 swings and the switch contacts in the switch 11 are switched. When the pushing operation is released, the switch operating portion 61 is restored to the state before the pushing operation by the restoring force of the switch operating portion 61, especially the restoring force of the rising edge portions 63 and 64.

Further, since the screw 81 for fixing the insulating support 12 to the wiring box 14 is fitted in the mounting hole 43 formed by the insulator 32, the metal support body to which the screw 81 and the switch 11 are attached is attached. It does not conduct to 31 and has insulation.

In the wiring device constructed as described above, the insulator 32 of the insulating support 12 is integrally formed by insert molding so as to cover the entire circumference of the support body 31, so that the support body 31 can be formed as in the conventional case. It is not necessary to attach the insulator 32 to the insulating member 32, and it is possible to increase the bonding strength between the insulator 32 and the support member 31 and the strength of the entire support. Further, the lateral width of the insulating support 12 becomes wider and comes into contact with both side edges of the wiring box 14, and the wide surface of the insulating support 12 is joined to the wiring box 14 to enhance the mounting strength.

Moreover, since the ribs 42 are integrally formed on the insulator 32 of the insulating support 12 along both sides of the opening 33 of the support body 31, the strength of the support as a whole can be further increased.

Further, since the plate-shaped projections 47 for plate positioning are integrally formed on both sides of the mounting holes 39 for plate mounting in the insulator 32 of the insulating support 12, when the plate 13 is mounted, The protrusion 47 is not broken, and the positioning can be reliably performed.

The identification piece 49 of the insulating support 12 may or may not be provided.

The wiring device is not limited to the switch, and may be an outlet or the like. In the case of an outlet, a plate having a window hole in the center is used.

[0047]

According to the insulating support of claim 1,
Since the insulator is integrally formed by insert molding so as to cover the entire circumference of the support body, it is possible to increase the bonding strength between the insulator and the support body and the strength of the support as a whole.
Further , the insulator should be placed in the longitudinal direction of the opening of the support body .
Since the ribs are integrally formed along both sides of the shaft , the strength of the entire support can be increased. Furthermore,
On the edge support, the ribs are inward from both edges of the support body
Since it is designed to be installed in a certain area,
Wider edge support, both sides of the wiring box
It becomes easier to make contact with and the mounting strength can be increased.

[0048] According to an insulating support according to claim 2, in addition to the effect of the insulating support of claim 1 Symbol placement, the plate-like projection for the plate positioned on opposite sides of the mounting hole of the plate mounted on the insulator Since it is integrally formed, the projection is not broken when the plate is attached, and the positioning can be performed reliably.

According to the insulation support of claim 3 , in addition to the effect of the insulation support of claim 1 or 2 , the insulator has a taper surface at the corners of both ends in the longitudinal direction on the mounting surface side of the wiring device. Since the support length is formed, even if the support length is a little longer than the length of the support housing part of the wiring box, this tapered surface prevents contact with the edge of the support housing part, and Can handle.

According to the wiring device of the fourth aspect, by using the insulating support according to any of the first to third aspects, it is possible to increase the strength when the insulating support is attached to the wiring device.

According to the wiring device of the fifth aspect, by using the insulating support according to any of the first to third aspects, it is possible to obtain an effect that the wiring device can be firmly held.

[Brief description of drawings]

FIG. 1 is a front view of an insulating support according to an embodiment of the present invention.

FIG. 2 is a rear view of the insulation support according to the above embodiment.

FIG. 3 is a side view of the insulating support according to the above embodiment.

FIG. 4 is a bottom view of the insulating support according to the above embodiment.

FIG. 5 is a vertical sectional view of a part of the insulation support according to the above embodiment.

FIG. 6 is a cross-sectional view of a part of the insulation support according to the above embodiment.

FIG. 7 is a vertical cross-sectional view of a wiring device using the insulating support of the above-mentioned embodiment.

FIG. 8 is a transverse cross-sectional view of a wiring device using the insulating support of the above embodiment.

FIG. 9 is a front view of the plate of the above embodiment.

FIG. 10 is a rear view of a plate combined with the insulating support of the above embodiment.

FIG. 11 is a bottom view of the plate of the above embodiment.

FIG. 12 is a cross-sectional view of a state in which the insulation support of the above embodiment is attached to a wiring box.

FIG. 13 is a perspective view of a part of the insulation support according to the above embodiment.

FIG. 14 is a cross-sectional view of a conventional insulation support attached to a wiring box.

FIG. 15 is a perspective view of a part of a conventional insulating support.

[Explanation of symbols]

11 Switch as wiring device 12 Insulation support 13 Plate 14 Wiring box as wiring device 31 Support body 31A bent portion 32 Insulator 33 Opening of support body 34 Wiring equipment mounting portion 41 Insulation opening 42 Rib 47 Protrusion 48 Tapered surface

Claims (5)

(57) [Claims] 1. A has an elongated opening in the center, providing a wiring device attachment section for attaching the wiring device to the opening Rutotomo
In a bent portion is formed metallic support member which projects forward in the side edge portions; has an opening that was exposed is <br/> openings and wiring devices attached portion of the support member an insulating body formed integrally over the entire circumference of the support body by insert molding; an inner space than both side edges of the insulator, opening of the insulator
Along the longitudinal sides of the front of the mouth and support
It is formed integrally with the insulator so as to cover the bent part of the body.
Insulating support characterized by having ribs and; Wherein the insulator includes an insulating support according to claim 1 Symbol mounting plate-shaped projection for the plate positioned on opposite sides of the mounting hole for plate mounting is characterized in that it is formed integrally. Wherein the insulator includes an insulating support according to claim 1 or 2, wherein the tapered surface on the corner portion of the longitudinal end portions in the mounting surface side of the wiring devices are formed. 4. A wiring device and; interconnection apparatus characterized by having a; insulating support and the interconnect device claims 1 attached to 3, wherein any one. 5. A wiring device comprising: a wiring device; an insulating support according to any one of claims 1 to 3 to which the wiring device is attached; and a plate attached to cover the insulating support.