JPH0928016A - Resin box for wiring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely detect the buried position of a resin box for wiring with a simple structure by annularly arranging a metallic tape on the peripheral edge of the opening of the main body of the resin box. SOLUTION: A metallic tape 2 is annularly arranged at the nearest position to the opening of a box main body 1 on the outer peripheral side face of the main body 1. The tape 2 is wound so that both ends of the tape 2 can overlap another and, at the joint 15 of the tape 2, the upper and lower tapes 2 are electrically connected to each other by thrusting a needle, etc., into the inside part of the tape 2 from the surface part of the tape 2. Therefore, when the tape 2 wound around the outer peripheral side face of the opening of the box main body 1 is detected from the surface of a wall with a metal detector, the outer line of the box can be clearly and surely detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring resin box, and more particularly to a wiring resin box embedded in a wall of a structure.

[0002]

2. Description of the Related Art A box made of a resin for wiring (hereinafter simply referred to as a box) has an opening on one side, and is arranged such that this opening is located on the back side of a wall. Note that, here, such an attached state is expressed as “embedded”. The embedding position of the box thus buried in the wall is determined by mounting a metal member on the box and detecting the metal member from the front side of the wall by a metal detector. An example of the structure of a box that can be detected by a metal detector is disclosed in Japanese Utility Model Publication No. 59-26750. This box has a substantially rectangular opening, and a metal foil as a detection member is attached to a short side of the opening in a direction along the short side. In this case, the position of the short side of the box can be known by the reaction of the metal foil.

However, in such a structure, since the metal foil is only provided on the short side, the response to the metal detector is weak, and the outline of the box cannot be detected clearly. In addition, the conventional structure with metal foil attached
Although it is simple, the metal foil easily breaks or peels off during transportation or construction, which deteriorates the detection performance and makes it difficult to detect the buried position, and repairing the metal foil takes time. Furthermore, for example, if the box is buried behind the wall so that the short side is up and down and the long side is left and right, it is easy to detect by moving the metal detector vertically, but it is difficult to detect if it is moved horizontally. .

Another conventional example is disclosed in Japanese Utility Model Laid-Open Publication No. 51-65.
There is a box disclosed in Japanese Patent Publication No. 299. A metal frame having a substantially U-shaped cross section is fitted into the box along the periphery of the opening. According to this structure, there is no problem such that the detection member is broken or peeled off and the detection performance is degraded, and the metal frame is disposed along the periphery of the opening.
It is considered that the detection performance is improved as compared with the above-described conventional example.

[0005]

However, the latter structure has the following problems. The structure of the metal frame is relatively complicated, and there are many inconveniences such as troublesome manufacturing and mounting in a box, and an increase in manufacturing cost. If the dimensional accuracy of the peripheral edge of the box and the metal frame is incorrect, it will be difficult to attach the metal frame to the box,
In some cases, the fitting may not be possible.

[0006] Since a part of the metal frame is located on the inner surface side of the box, there is a high possibility that the metal frame comes into electrical contact with objects such as wiring equipment and electric wires housed in the box.
The same problem occurs in the former structure described above.) In addition, since the inner part of the metal frame protrudes into the box by the thickness of the inner part, this part may interfere with the housing of wiring equipment, electric wires, etc. in the box body, or damage the housing. There is a problem that the possibility of occurrence is high.

The problem to be solved by the present invention is to reliably detect the embedded position of the wiring resin box with a simple structure. Another problem to be solved by the present invention is to improve productivity in addition to the above problems.
Still another object to be solved by the present invention is to prevent the detection member from coming into contact with a wiring device or the like stored in the box.

[0008]

According to a first aspect of the present invention, there is provided a wiring resin box which is a wiring resin box which is embedded in a wall of a building and which comprises a box body and a metal tape. The box body has an opening, and can be disposed so that the opening faces the back surface of the wall. The metal tape is arranged in a ring shape around the periphery of the opening, and is for detecting the embedded position of the box body.

In this case, since the metal tape is annularly arranged on the periphery of the opening, the contour of the box can be clearly detected by moving the metal detector in any of the up, down, left and right directions. Moreover, the structure is simple because the metal tape is only wound around the periphery of the opening. A wiring resin box according to a second aspect is the wiring resin box according to the first aspect, wherein an adhesive layer is provided on a surface of the metal tape that comes into contact with the box body. In this case, since the work for attaching the metal tape to the box body is easy, the productivity is excellent.

A wiring resin box according to a third aspect is the wiring resin box according to the first or second aspect, wherein the metal tape is provided on an end face of the opening so as not to overlap the opening. There is. In this case, it is possible to avoid electrical contact between the metal tape and the stored items such as wiring equipment and electric wires accommodated in the box. A wiring resin box according to a fourth aspect is the wiring resin box according to the first or second aspect, wherein the metal tape is provided on an outer peripheral side surface of the box body. In this case, it is possible to avoid electrical contact between the metal tape and the contained items such as wiring equipment and electric wires accommodated in the box, and it is easy to attach the tape.

A wiring resin box according to a fifth aspect of the present invention is the wiring resin box according to any one of the first to fourth aspects, in which a seam portion in which both ends of the metal tape overlap each other electrically. There is continuity. As a method of making the electrical connection, for example, it is preferable to pierce a seam portion where both ends of the tape are overlapped with a needle. Here, in the box according to the present invention, since the metal tape is annularly arranged at the periphery of the opening of the box body, it is easy to detect the contour of the opening, but in order to detect it more clearly, the metal tape is used. It is preferable that the tape is electrically connected in an annular shape. Therefore, in the wiring resin box according to the fifth aspect, the metal tape is electrically connected in an annular shape, and in this case, a strong magnetic flux is generated and the reaction with the metal detector becomes strong. For this reason,
It is possible to detect the contour of the opening of the wiring resin box more clearly. Further, the range of the detectable depth (the distance from the wall to the box main body) also increases.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wiring resin box (hereinafter simply referred to as a box) according to an embodiment of the present invention will be described below with reference to FIG. This box has a rectangular box body 1 having an opening on one side, and a metal tape 2 attached to the outer peripheral side surface of the box body 1.

The box body 1 includes a bottom portion 5 to which wiring equipment and the like are attached, and a pair of long side wall portions 6 and 7 facing each other.
It has a pair of opposing short side walls 8 and 9. A plurality of elongated screw insertion holes 10 are formed on the long side walls 6 and 7 so as to face each other. This screw insertion hole 10 is
It is a hole through which a screw for attaching the box to a support or the like of the building is inserted. Further, two knockouts 11 for passing electric wires are formed in the short side wall portions 8 and 9. Further, on the inner surface side of each of the short side wall portions 8, 9, cylindrical screw insertion portions 12, 13 for mounting a plate member such as a wiring device mounting frame are formed so as to protrude inward. A nut (not shown) is embedded in the screw insertion portions 12 and 13. The nut is embedded through a hole 14 formed inwardly from the outer surface of the short side wall portions 8 and 9.

The metal tape 2 is annularly provided on the outer peripheral side surface of the box body 1 at a position closest to the opening. The metal tape 2 is an aluminum tape or the like.
(See FIG. 2). In addition, the width is set to a width that does not cause inconvenience due to the screw insertion hole 10 and the knockout 11 on each side wall. The metal tape 2 is wound so that both ends overlap each other.
The seam portion 15 is projected by a needle or the like from the surface of the tapes that are overlaid on each other, and the upper and lower tapes are electrically connected as shown in an enlarged view in FIG.

When manufacturing such a box, a box body 1 manufactured by resin molding is prepared and a nut 14 is embedded in the screw insertion portions 12 and 13 using a hole 14 in the box body 1. . Next, the metal tape 2 is wound around the outer peripheral side surface of the box body 1. On this occasion,
The metal tape 2 is wound so that one end and the other end overlap. Further, the metal tape 2 is pushed with a needle or the like against the overlapping seam portion 15 as described above, so that the upper and lower tapes are electrically connected.

The case where the box thus obtained is attached to the construction will be described with reference to FIG. In the use form shown in FIG.
1 is provided, but the body edge 21 may not be provided. When the body edge 21 is provided, the distance between the box body 1 and the wall material 22 is increased by the thickness of the body edge 21.

First, the box is arranged so that its long side wall portion abuts on the side surface of the column 20, and the opening is flush with the surface of the column 20. Then, a screw is passed through the screw insertion hole 10 of the box, and the tip of this screw is
The box is fixed to the column 20 by screwing it to zero. Thereafter, the wall member 22 is attached so as to cover the opening of the box. Then, the metal tape 2 wound on the outer peripheral side surface of the opening of the box from the surface of the wall material 22 is detected using a metal detector. By this detection, the outline of the box can be clearly and reliably known.

Next, based on the contour of the box obtained by the detection operation, a hole is made in the wall material 22 along the opening, and the plate member is attached from the surface of the wall material. The attachment of the plate member is performed by nuts embedded in the cylindrical screw insertion portions 12 and 13 provided in the box body 1 and screws screwed to the nuts. In such an embodiment, it is possible to clearly detect the contour of the opening of the buried box body, and therefore when making a hole corresponding to the opening in the wall, efficiently and appropriately make a hole of a suitable size. be able to. Further, the distance between the box body 1 and the surface of the wall member 22 is increased by the thickness of the body edge 21, but the metal tape 2 is electrically conducted, and the reaction to the metal detector becomes strong. So it can be detected well.

Further, the metal tape 2 is the box body 1
Since it does not cover the peripheral edge of the opening, no hindrance occurs when wiring equipment, electric wires, and the like are accommodated in the box body, and they do not come into contact with the metal tape to cause an electrical problem. [Modification] The metal tape 2 may be provided on the end face of the opening peripheral edge of the box body 1 as shown in FIG. In this case, the width of the metal tape 2 can be appropriately set within a detectable range, and it is sufficient if the peripheral edge of the opening is not covered.

In the above embodiment, the nut is embedded through the hole 14 formed inward from the outer surface of the short side wall portions 8 and 9, but the nut embedding structure is as follows.
It is not particularly limited to the above-mentioned embodiment, and may be embedded in a conventional manner. The opening of the box body 1 is not limited to a rectangular shape, but may be a square, for example. The design of other details can be changed as appropriate without affecting the gist of the present invention.

[0021]

With the wiring resin box according to the present invention, the buried position can be reliably detected with a simple structure. Further, when an adhesive layer is provided on the surface of the metal tape that comes into contact with the box main body, the operation of attaching the metal tape to the box main body is easy, and the productivity is excellent.

Further, by providing a metal tape on the end face of the opening so as not to overlap the opening or on the outer peripheral side surface of the box body, the metal tape and the contents accommodated in the box are electrically connected. You can avoid contact with. In addition, by electrically connecting the joint portions where both ends of the metal tape overlap each other, a strong magnetic flux can be generated, and the reaction to the metal detector can be enhanced.

[Brief description of drawings]

FIG. 1 is a perspective view of a wiring resin box according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which the metal tape according to the present invention is conductive.

FIG. 3 is a cross-sectional view showing a usage form of the wiring resin box according to the present invention.

FIG. 4 is a perspective view of a wiring resin box according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box body 2 Metal tape 5 Bottom part 6, 7 Long side wall part 8, 9 Short side wall part 12, 13 Screw insertion part 15 Joint part 16 Adhesive layer

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Satoshi Tanoi 1048, Kadoma, Kadoma-shi, Osaka Prefecture Matsushita Electric Works, Ltd.

Claims (5)

[Claims] 1. A wiring resin box to be embedded in a wall of a building, the box body having an opening, the box main body being disposable so as to face the back surface of the wall, and the opening. A resin box for wiring, which is annularly arranged around the periphery of the box and has a metal tape for detecting the embedded position of the box body. 2. The resin box for wiring according to claim 1, wherein an adhesive layer is provided on a surface of the metal tape that comes into contact with the box body. 3. The wiring resin box according to claim 1, wherein the metal tape is provided on an end surface of the opening so as not to overlap the opening. 4. The resin box for wiring according to claim 1, wherein the metal tape is provided on an outer peripheral side surface of the box body. 5. The seam portion where both ends of the metal tape overlap each other is electrically connected.
The resin box for wiring according to any one of 1.