JPH0274107A - Decorative structure of wiring accessory - Google Patents

Abstract

PURPOSE:To enable application on both switches associated with a large or a small handle by arranging a decorative cover at the inside of a plate window made in a decorative plate and providing a section engagable with an inner frame to the decorative cover. CONSTITUTION:Decoration covering the circumferential edge of a burying hole is made with a plate frame 1 arranged to cover the circumferential edge of the burying hole, a decorative plate 2 arranged at the front face side of the plate frame 1 and an intermediate frame 3 for pressing the plate frame 1 against the fixing face and holding the decorative plate. In case of a switch, the intermediate frame 3 is not exposed to the outside if a switch handle having same area as the plate window 21 of the decorative plate 2 is employed. When a small switch handle is employed, a decorative cover 4 is mounted at the inside of the plate window 21.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a decorative structure for a wiring device that decorates the mounting surface around the wiring device embedded in the mounting surface such as a wall surface.

[Prior Art] Conventionally, a wiring device has been used in which a recessed box that holds a mounting frame is fitted into a recessed hole formed in a mounting surface such as a wall, and a wiring device such as a switch or an outlet is attached to the mounting frame. The mounting structure is known.

In this type of mounting structure, in order to prevent the embedding hole and the mounting frame from being exposed and to obtain a desirable appearance, the parts other than the exposed parts of the wiring device are usually covered with a decorative plate.

By the way, there are two types of switches: those that are provided with a small handle that allows a plurality of switches to be provided on the decorative plate, and those that are provided with a large handle that occupies almost the entire area of the decorative plate. Specifications have also been matched for other wiring devices such as electrical outlets.

[Problems to be Solved by the Invention] When applying decorative plates to wiring devices having two types of specifications, there is a problem in that decorative plates with different dimensions must be prepared for each specification.

The present invention aims to solve the above problems, and provides a decorative structure for wiring devices that can be applied to wiring devices with different specifications while using decorative plates with the same specifications. be.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes an opening window that exposes a part of the wiring device housed in the embedded hole formed in the mounting surface such as the wall surface. a plate frame disposed around the embedded hole, a decorative plate provided with a plate window disposed so as to cover the plate frame and exposing a part of the wiring device, and a decorative plate fixed to the mounting surface. The plate frame is sandwiched between the inner frame and the mounting surface, and the decorative cover is disposed inside the plate window of the decorative plate and has an engaging portion for the inner frame. It is inserted between the plate and mechanically connected to the plate frame.

[Function] According to the above configuration, the decorative cover is disposed inside the plate window formed in the decorative plate, and the decorative cover is provided with an engaging portion for the inner frame, so that it can be used as a switch with a large handle. By forming the plate window to correspond to the corresponding specifications and attaching a decorative cover to the decorative plate as necessary, it is possible to make the switch correspond to the specifications corresponding to a switch with a small handle.

[Embodiment] The wiring device is attached to a mounting frame that can be attached to an embedded box, and the embedded box is housed in an embedded hole drilled in a mounting surface such as a wall surface. The mounting frame is set so that up to three wiring devices of unit size can be mounted. Embedded boxes, mounting frames, and wiring equipment are 1. J
It is standardized by IS standards and Wiring Equipment Industry Association standards, and is well known.

By the way, when a mounting frame is attached to an embedded box and a wiring device is attached to the mounting frame, the embedded box and the mounting frame will be exposed to the outside, which can be unsightly. Because of this, the periphery of the embedded hole is decorated. As shown in FIGS. 1 and 2, such decoration includes a plate frame 1 disposed to cover the periphery of the embedded hole, and a decorative plate 2 disposed on the front side of the plate frame 1. and an inner frame 3 which presses the plate frame 1 against the mounting surface and holds the decorative plate 2. The plate frame 1 and the decorative plate 2 are made of synthetic resin, and the middle frame 3 is formed by punching out a steel plate. Here, the middle frame 3 conventionally used is formed by die-casting, but in this example, it is formed by punching a steel plate to improve processing accuracy and stabilize quality. The finishing process that was necessary for Ikast and 1. This eliminates the need for manual deburring work, reducing manufacturing costs.

The plate frame 1 is formed along the periphery of the embedded hole, and has an opening window 11 formed in the center of the plate frame 1.
Wiring equipment is exposed through it. Plate frame 1 (7) Projecting walls 1 and 2 are formed on the front surface over the entire circumference. Positioning holes 13 are provided at the center of each side on the outside of the projecting wall 12.
is formed.

The decorative plate 2 is a plate window 2 that exposes wiring devices.
1 at the center, the outer circumferential edge is formed in the same shape as the outer circumferential edge of the plate frame 1, and the inner circumferential edge is located inside the inner circumferential edge of the plate frame 1. As shown in FIG. 2(e), the peripheral portion of the decorative plate 2 has a front wall 22, an inner peripheral wall 23, and an outer peripheral wall 24, and is formed in a substantially U-shaped cross section with an open back side. At a portion of the outer peripheral wall 24 corresponding to the positioning hole 13 of the plate frame 1,
A positioning projection 25 is provided to protrude, and when the decorative plate 2 is placed on the front side of the plate frame 1, the positioning hole 13
By fitting the positioning protrusion 25 into the plate frame 1
This is so that the decorative plate 2 is positioned relative to the base plate 2.

The middle frame 3 has a horizontal piece 3 between each end of a pair of vertical pieces 31.
2 to form a rectangular frame shape, and an insertion hole 33 is bored at each corner. The middle frame 3 can be fixed to the mounting frame by inserting the plate screws 14 through the second insertion hole 33] 7 to fit the wiring device.

Here, the peripheral part of the middle frame 3 is set to sandwich the inner peripheral part of the plate frame 1 between a mounting surface such as a wall surface, and the middle frame 3 can be fixed to the mounting frame with plate screws 14. As a result, the plate frame 1 is also fixed at the same time. Further, a ring-shaped fastener 15 provided on the back side of the middle frame 3 is attached to the plate screw 14, and a ring-shaped fastener 15 provided on the back side of the middle frame 3 is attached to the plate screw 14.
is held so that it does not fall off. Each vertical piece 3 of the middle frame 3
Projecting ribs 34 projecting toward the decorative plate 2 in the thickness direction are formed on the outer edges of each frame 1. When the decorative plate 2 is arranged on the front side of the inner frame 3, the projecting ribs 34 It is arranged along the inner surface of the inner circumferential wall 23 of the plate 2 . In addition, the plate frame 1 in the thickness direction is provided at both ends of each horizontal piece 32 of the middle frame 3 via a stepped portion 35.
A fixing piece 36 extends from the side, and an insertion hole 37 is bored in the fixing piece 36. By inserting the fixing screw 26, which is a tapping screw, into the back side of the decorative plate 2 through this insertion hole 37, the inner frame 3 can be attached to the decorative plate 2.
It is fixed to .

According to the above configuration, first, the middle frame 3 is fixed to the back surface of the decorative plate 2 with the fixing screws 26, and then the plate frame 1 is sandwiched between the middle frame 3 and a mounting surface such as a wall surface. The inner frame 3 can be fixed using the plate screws 14 to the mounting frame of the wiring device, which has been fixed to the mounting surface in advance. Here, since the insertion hole 33 is formed so as to be exposed inside the plate window 21 of the decorative plate 2, the plate screw 14 can be tightened from the front of the decorative plate 2. In this way, the plate frame 1 and the decorative plate 2 can be fixed to the mounting surface via the middle frame 3.

When the wiring device is a switch, by using a switch handle having the same area as the plate window 21 of the decorative plate 2, a good appearance can be obtained without exposing the inner frame 3 to the outside. Further, when using a normal small switch handle, a decorative cover 4 is attached to the inside of the plate window 21. The decorative cover 4 is made of synthetic resin and has a rectangular frame shape with an exposure window 41 in the center, and is provided with a plurality of leg pieces 42 protruding toward the back side at the side periphery. An engaging pawl 43 is formed at the tip of the leg piece 42, and the engaging pawl 43 engages with the inner peripheral edge of the vertical piece 31 of the middle frame 3, as shown in FIG. An inclined surface 38 that slopes toward the front outer side is formed at a portion of the middle frame 3 that engages with the engagement claw 43, and is configured to guide the engagement claw 43. However, if the exposure window 41 of the decorative cover 4 is formed to match a small switch handle or outlet, the inner frame 3 can be hidden by the decorative cover 4 even though a small wiring device is used. It is possible. An engaging notch 44 is formed on the peripheral edge of the decorative cover 4 that is different from the protruding side edge of the leg piece 42, and the decorative cover 4 can be easily removed by inserting a jig such as a screwdriver and prying it. It is possible.

In the above embodiment, the decorative plate 2 and the middle frame 3 are connected by the fixing screws 14, but as shown in FIG. After inserting the boss 27 into the through hole 39 formed in the hole 39, the boss 27 may be crushed by heat.

[Example 2] In this example, the width dimension is approximately twice that of Example 1, and the decorative plate 2 is provided with two plate windows 21. Both plate windows 21 are separated by a partition bar 28, and a middle vertical piece 31a is formed in the middle frame 3 at a position that matches the partition bar 28. A through hole 39 is bored in the middle vertical piece 31a, and the boss 27 provided protruding from the back side of the partition bar 28 of the decorative plate 2 is inserted through the through hole 39, as shown in FIG. By crushing with heat, the partition bar 28 and the middle vertical piece 31a are brought into close contact with each other.Other than the six different dimensions, the other configurations are the same as in Example 1, but according to this example, Two large switch handles can be used in one place.

Furthermore, the width dimension is approximately three times that of Example 1, the decorative plate 2 is provided with two partition bars 28, and the inner frame 3 is provided with a middle vertical piece 31a.
By providing two switch handles, it is possible to use three large switch handles at one power point. Further, the switch may be combined with other wiring devices such as an outlet, or a wiring device using a large switch handle and a wiring device using a small switch handle may be used together.

[Effects of the Invention] As described above, the present invention includes a frontage window that exposes a part of the wiring device housed in the embedded hole formed in the mounting surface such as a wall surface, The plate frame is fixed to the mounting surface and is fixed to the mounting surface.The plate frame is fixed to the mounting surface and is fixed to the mounting surface. and a decorative cover disposed inside the plate window of the decorative plate and provided with an engaging portion for the intermediate frame,
The inner frame is inserted between the plate frame and the decorative plate and mechanically connected to the plate frame, and the decorative cover is arranged inside the plate window formed in the decorative plate. Since a retaining part is provided for the frame, the plate window can be formed to correspond to the specifications equivalent to a switch with a large handle, and if necessary, a decorative cover can be attached to the decorative plate to make it smaller. It has the advantage that it can be made to correspond to specifications equivalent to a switch with a handle. As a result, regardless of whether the switch is compatible with a switch using a large handle or a switch with a small handle, it is possible to handle it simply by attaching and removing the decorative cover.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view showing one embodiment of the present invention, Figure 2 (
a) to (d) are the front view, partially cutaway side view, partially cutaway bottom view, and rear view of the same as above with the decorative cover removed, and Figures 3(a) and (b) are the main parts of the same as above, respectively. 4(a) and 4(b) are process diagrams showing a method of joining the decorative plate and the inner frame by heat bonding, and FIG. FIG. 6 is an exploded perspective view showing another embodiment of the invention. FIG. 6 is an exploded perspective view showing still another embodiment of the invention. 1... Plate frame, 2... Decorative plate, 3...
Middle frame, 4... Decorative cover, 11... Opening window, 21.
... Plate window, 38 ... Sloped surface, 42 ... Leg piece,
43... Engaging claw. Taka Mikami Patent Attorney Ishi 1) Cho Nachi 4 (b)

Claims (1)

[Claims] (1) A plate frame provided with an opening window that exposes a part of the wiring device housed in the embedded hole formed in the mounting surface such as a wall, and arranged around the embedded hole, and a plate frame. a decorative plate provided with a plate window disposed to cover the wiring device and exposing a part of the wiring device; an inner frame fixed to the mounting opening and sandwiching the plate frame between the mounting surface; and the decorative plate. a decorative cover disposed inside the plate window and having an engaging portion for the middle frame, the middle frame being inserted between the plate frame and the decorative plate and mechanically coupled to the plate frame. A decorative structure of a wiring device characterized by: