JP2002325334A - Cover for embedded wiring box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent concrete from flowing into a box and abutting on the front face of a rotating plate, when the box is embedded in the concrete, in a cover for the embedded wiring box, to which the rotating plate having an opening for attaching electrical components on a front face of a box body is attached rotatably. SOLUTION: The rotating plate C, having the opening B for attaching the electrical components on the front face of the box body A, is rotatably attached to the cover for the embedded wiring box. When the cover for embedded wiring box covers the front face of the box body A, it also covers from the outside to the outer circumferential edge of the rotating plate B, and the cover for embedded wiring box has a shape and a size which can prevent the concrete from abutting on the front face of the rotating plate B, when the embedded wiring box is embedded in the concrete. A locking part 2, lockable to the box body A, is formed on an inner face 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for embedding various embedded wiring boxes such as an outlet box, an outlet box and a switch box in concrete (for example, in a concrete wall or ceiling). The present invention relates to a cover for a buried type wiring box for preventing inflow of inflow.

[0002]

2. Description of the Related Art The cover for the embedded wiring box has various shapes depending on the type of the embedded wiring box used.
A structure having a structure has been developed and put into practical use, and an example thereof is a cover X for an embedded wiring box as shown in FIG. The cover X is used for an embedded wiring box Y as shown in FIG. Therefore, the embedded wiring box Y shown in FIG. 13 will be described, and then the embedded wiring box cover X shown in FIG. 13 will be described.

[0003] As shown in FIG. 14, a buried wiring box Y shown in FIG.
And a rotating plate C rotatably mounted in the direction of the arrow in the figure. The box body A has a round hole E for mounting the rotary plate C on the front surface thereof, and a connection port F for connecting a conduit on the side surface.

[0004] The rotating plate C has an opening B at the center thereof for mounting an electric part (not shown) such as an electric switch or an outlet connected to an electric cable or the like drawn into the box body A. It is a disc, and is fitted in a round hole E opened in the box body A so as to be rotatable in the direction of the arrow in the figure. When the embedded wiring box Y is buried in a state in which it is inclined in one of the arrow directions in the figure due to the pressure of concrete or the carelessness of an operator at the time of embedding, the rotating plate C is The direction of the opening B is corrected to a predetermined direction by rotating in the other direction of the arrow, so that the electrical component can be attached in a good appearance. As shown in FIG. 14, a peripheral wall G is raised around the opening B so as to surround the opening B, and electrical components fitted inside the peripheral wall G are provided above and below the opening B. A screw hole H for screwing is formed.

[0005] A conventional embedded wiring box cover X shown in FIG. 13 has a shape capable of fitting inside the peripheral wall G of the embedded wiring box Y and closing the opening B as shown in FIG. A lock pin J inserted into the screw hole H is provided on a surface (inner surface) facing the opening B when fitted inside the peripheral wall G. Are integrally formed with the cover X on the outer surface thereof.
A knob K is provided so as to be gripped when fitted into or detached from the inside of the body.

[0006] The conventional embedded type wiring box cover X
Is used as follows: First, as shown in FIG. 13, the embedded wiring box cover X is attached to the embedded wiring box Y.
And the opening B is closed. At this time, it goes without saying that the fixing pins J of the cover X are inserted into the screw holes H to temporarily fix the cover X. Next, as shown in FIG. 15, the embedded wiring box Y to which the cover X is attached is arranged in the concrete casting space M surrounded by the form L, and fixed at a predetermined position by any means. After that, concrete is poured into the casting space M. When the concrete hardens, remove the formwork L,
The cover X is removed from the embedded wiring box Y. Next, if necessary, the rotating plate C of the embedded wiring box Y is rotated to correct the direction of the opening B, and an electric component is attached to the opening B and screwed.

[0007]

The conventional cover for a buried wiring box has the following problems. (1) As shown in FIG. 15, when the embedded wiring box Y to which the embedded wiring box cover X is attached is disposed in the concrete casting space M, the inner surface N of the form L is formed by the opening. 13 and 14, the clearance between the inner surface N of the form L and the front surface of the rotary plate C is equal to the height of the peripheral wall G. Occurs. Therefore, concrete is cast on the front surface of the rotating plate C so as to surround the peripheral wall G (FIG. 16). As a result, in order to correct the direction of the opening B by rotating the rotating plate C in one of the directions shown by arrows in the drawing after removing the form L, the concrete (particularly, the peripheral wall) cast on the front surface of the rotating plate C is required. All or part of the concrete placed around G) must be removed (it must be removed). (2) The concrete cast on the front surface of the rotating plate C may enter the joint P between the rotating plate C and the box body A. In this case, even if the concrete on the front surface of the rotating plate C is removed. The rotating plate C does not rotate or does not rotate smoothly even if it rotates.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cover for an embedded wiring box in which a rotating plate having an opening for mounting an electric component is rotatably mounted on a front surface of a box body. When embedding a box in concrete, not only prevent concrete from flowing into the box, but also prevent concrete from being poured into the front surface of the rotating plate, and rotate the rotating plate later. An object of the present invention is to provide a cover for an embedded wiring box which does not need to remove concrete at the time.

The first embedded wiring box cover of the present application is a buried wiring in which a rotating plate C having an opening B for mounting an electric component is rotatably mounted on the front surface of a box body A. A cover for a box. When the cover is put on the front surface of the box body A, it covers the outer periphery of the rotating plate B to the outside, and when the embedded wiring box is embedded in concrete, the concrete is placed on the front surface of the rotating plate B. Are formed in a shape and a size that can prevent them from being cast.

The second embedded wiring box cover according to the present application is the first embedded wiring box cover, wherein the inner surface 1 has a locking portion 2 which can be locked to the box body A on the inner surface 1. It is.

[0011]

(Embodiment 1) An example of an embodiment of a cover for an embedded wiring box according to the present invention will be described.
The embedded wiring box cover (hereinafter referred to as “cover 10”) according to the present embodiment is used for the embedded wiring box Y (hereinafter referred to as “box Y”) illustrated in FIG. PP (Polypropylene) and PE (Polyethylene)
And the like. Less than,
The specific structure of the cover 10 of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of the cover 10 and the box Y, FIG. 2 is a perspective view of the state where the cover 10 is mounted on the box Y, and FIG.
4 is a front view of the cover 10, FIG. 5 is a rear view thereof, FIG. 6 is a right side view thereof, FIG. 7 is a left side view thereof, FIG. 8 is a plan view thereof, and FIG. FIG. 10 is a bottom view of FIG.
FIG. 11 is a sectional view taken along the line AA of FIG.

The cover 10 of the present invention, as shown in FIG.
A closing plate 12 that can be repeatedly attached and detached to and from the box Y shown in FIG. 14 and that can cover the opening B of the box Y from above and close it when the device is mounted, and an inner side raised from the periphery of the closing plate 12 The side wall 14, a covering plate 16 continuously connected from the upper end of the inner side wall 14 to the outside, and an outer side wall 18 raised from a peripheral edge of the covering plate 16 to a surface having the inner side wall 14 are injection-molded. To form a substantially circular outer shape (front shape) as a whole.

As shown in FIG. 3, the closing plate 12 is fitted into the inside of a peripheral wall G formed around the opening B of the box Y with almost no gap so that the opening B can be closed. Is formed. Specifically, it has the same or substantially the same shape as the inner shape of the peripheral wall G (see FIG. 1), and has a width (W ₁ ) of 47.0 mm and a height (H ₁ ) of 97.6 m shown in FIG.
m. As shown in FIGS. 1, 2, 10, etc., a thin plate-like knob 21 is provided on the outer surface 20 of the closing plate 12 so as to protrude in the width direction when the cover 10 is attached to or detached from the box Y. ing. Also, as shown in FIG. 3, FIG. 5, FIG.
Above and below the inner surface 1, bar-shaped locking portions 2 (locking pins 2) that are inserted and screwed into the screw holes H (FIG. 1) of the box Y when the cover 10 is mounted on the box Y are parallel. It is projected.

As shown in FIGS. 1, 5, 11 and the like, the inner side wall 14 is vertically raised from the peripheral edge of the closing plate 12 toward the front, and as shown in FIG. 12 is fitted inside the peripheral wall G of the box Y and the opening B is closed, the outer peripheral surface 30 is in contact with the inner peripheral surface Q of the peripheral wall G (see FIG. 1) without a gap, and It is designed to prevent intrusion of concrete. As shown in FIG. 11, the inner side wall 14 is formed to be slightly thicker (4.0 mm) than the outer side wall 18. However, the inner side wall 14 and the outer side wall 18 need not necessarily have different thicknesses. However, they may be of the same thickness,
May be thinner than the outer side wall 18.

The covering plate 16 is formed flat from the upper part of the inner side wall 14 to the outside as shown in FIGS. 1, 4, 11 and the like. As described above, the box Y is formed in a shape and a size capable of covering from the outside of the peripheral wall G to the arc-shaped projections R protruding from the four corners of the front surface. That is, it is formed in a shape and size that can cover not only the entire front surface of the rotating plate C in the box Y and the joint P between the rotating plate C and the box main body A but also further outside (up to the arc-shaped projection R). I have. Specifically, the width (W ₂ ) shown in FIG.
The height (H ₂ ) is 4.0 mm and the height (H ₂ ) is 107.0 mm.

As shown in FIGS. 5, 10 and 11, two reinforcing plates 4 are provided on the inner surface of the covering plate 16 between the outer side wall 18 and the inner side wall 14 so as to surround the inner side wall 14.
When the opening B is closed by fitting the closing plate 12 and the inner side wall 14 inside the peripheral wall G as shown in FIG. The upper surface O of the peripheral wall G is fitted into the gap 41 between
(FIG. 1) abuts against the inner surface of the cover plate 16.

The outer side wall 18 is shown in FIGS.
As shown in FIG.
It stands upright to the side of the side with the edge. As shown in FIG. 5, the outer side wall 18 is composed of a combination of a linear portion and an arc portion. When the cover 10 is mounted on the box Y as shown in FIG. A lower end 50 (FIG. 10) covers a part of both side surfaces in the width direction of the box Y from the outside thereof and is in close contact with it, and the inner lower end 51 (FIG. 11) of the latter protrudes from four front corners of the box Y. Of the arc-shaped projection R from the outside thereof so as to be in close contact with it. As a result, the entire front surface of the rotary plate C in the box Y and the joint P between the rotary plate C and the box main body A are accommodated in the space surrounded by the outer side wall 18, the covering plate 16, and the reinforcing plate 40, and the semi-sealed state Covered.

As shown in FIG. 5, arcuate concave portions 53 are formed at two opposing portions of the outer side wall 18, and when the cover 10 is mounted on the box Y as shown in FIG. The cylindrical screw hole U protruding forward from the front of the box Y is avoided so as to be in close contact with the front of the box Y.

When the cover 10 of the present invention having the above structure is used, for example, the following is performed. (1) The box Y (FIG. 2) to which the cover 10 is attached is arranged in the casting space M (FIG. 15) by a method similar to the conventional method. At this time, the cover plate 16 of the cover 10 contacts the inner surface of the form L. (2) Then, concrete is poured into the mold L, and after curing, the mold L is removed and the cover 10 is removed from the box Y. When the cover 10 is removed from the box Y, no concrete is naturally cast on the inside of the arc-shaped projection R covered by the cover 10 on the front surface of the box Y. That is, unlike the case where the conventional cover X shown in FIG. 13 is used, a situation (FIG. 16) in which concrete is cast also on the front surface of the rotating plate C cannot occur, and as shown in FIG. The entire front surface of the peripheral wall G and the outer side of the rotating plate C, and furthermore, the joint P between the rotating plate C and the box body A is exposed to the outside. (3) If necessary, rotate the rotating plate C to correct the direction of the opening B. At this time, the entire front surface of the peripheral wall G and the outer rotating plate C, and the joint P between the rotating plate C and the box body A are exposed to the outside. The rotating plate C can be rotated without the need. (4) After rotating the rotary plate C to correct the direction of the opening B, the outer side of the peripheral wall G is dressed with mortar or the like.

(Embodiment 2) The shape and size of the embedded wiring box cover according to the present invention shown in the drawings are merely examples, and concrete is inserted into the embedded wiring box at the time of embedding by closing the opening of the embedded wiring box. Any shape and size that can prevent intrusion and cover the outer periphery of the rotating plate beyond the outer peripheral edge can be appropriately changed according to the shape and size of the box used. For example, the outer shape of the embedded wiring box cover of the present invention may be any shape such as a circle, an ellipse, a square, a polygon, etc., as long as the above condition is satisfied.

The embedded wiring box to be used is not limited to the one shown in the figure. A rotating plate having an opening for mounting an electric component is rotatably mounted on the front surface of the box body, and the rotating plate is rotated. An embedded wiring box having a rotation mechanism capable of correcting the direction of the opening by causing the wiring box to have a shape and structure other than those described above may be used.

[0022]

The first embedded-type wiring box cover of the present application has the following effects. (1) When placed on the front surface of the box body, it covers the outer peripheral edge of the rotating plate to the outside, so that concrete is poured into the front surface of the rotating plate when the embedded wiring box is embedded in concrete. Since the shape and size are such that concrete can be prevented from entering through the opening, it is necessary to remove the concrete cast on the front surface of the rotating plate in order to rotate the rotating plate. Thus, the advantage of the embedded wiring box that the rotating plate can be rotated to correct the direction of the opening can be maximized. (2) Concrete is prevented from entering the joint between the box body and the rotating plate, so that the rotating plate does not rotate even if the concrete cast on the front of the rotating plate is removed, or the rotating plate rotates smoothly. The inconvenience of not rotating can be reliably prevented. (3) Since it is detachable from the embedded wiring box, one cover can be used repeatedly, which is economical.

The second cover for the embedded wiring box of the present application has the following effects. (1) Since the locking portion for locking to the box body is formed on the inner surface, the cover for the embedded wiring box attached to the box does not accidentally come off the box or displace. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an embedded wiring box cover of the present invention and an embedded wiring box in which the cover is used.

FIG. 2 is a perspective view showing a state in which the cover shown in FIG. 1 is attached to a box.

FIG. 3 is a longitudinal sectional view showing a state where the cover shown in FIG. 1 is mounted on a box.

FIG. 4 is a front view of the cover shown in FIG. 1;

FIG. 5 is a rear view of the cover shown in FIG. 1;

FIG. 6 is a right side view of the cover shown in FIG. 1;

FIG. 7 is a left side view of the cover shown in FIG. 1;

FIG. 8 is a plan view of the cover shown in FIG. 1;

FIG. 9 is a bottom view of the cover shown in FIG. 1;

FIG. 10 is a sectional view taken along line AA of FIG. 5;

FIG. 11 is a sectional view taken along line BB of FIG. 5;

FIG. 12 is an explanatory view showing a state where the embedded wiring box shown in FIG. 1 is embedded using the embedded wiring box cover of the present invention shown in FIG. 1;

FIG. 13 is a perspective view showing an example of a conventional cover for an embedded wiring box and an embedded wiring box.

FIG. 14 is an exploded perspective view showing the structure of the box shown in FIG. 13;

FIG. 15 is an explanatory view showing a state where the embedded wiring box is arranged in a concrete casting space.

FIG. 16 is an explanatory view showing a state in which the embedded wiring box shown in FIG. 13 is embedded using the conventional embedded wiring box cover shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner surface 2 Locking part A Box body B Opening C Rotating plate

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Katsuhiko Shirogane F-term in Furukawa Electric Co., Ltd. 2-6-1 Marunouchi, Chiyoda-ku, Tokyo 4E360 AB03 AB12 AB31 BC05 EA05 ED02 ED03 ED27 EE02 FA08 GA23 GA46 GA53 GB94 5G357 CA06 CB04 CC01 CC05 CD02 CE02 CF05 5G361 AA03 AB10 AC02 AC06 AC10 AD01 AE01

Claims (2)

[Claims] 1. A rotating plate (C) having an opening (B) for mounting an electric component on a front surface of a box body (A).
Is mounted on the front surface of the box body (A) so as to cover the outer periphery of the rotating plate (B) to the outside, so that the embedded wiring box is mounted. A cover having a shape and a size capable of preventing concrete from being poured into the front surface of the rotating plate (B) when the cover is embedded in concrete. 2. A cover for an embedded wiring box according to claim 1, wherein a locking portion (2) capable of locking to the box body (A) is formed on the inner surface (1). Cover for embedded wiring box.