JP6625091B2 - Wiring box and cover for wiring box - Google Patents

Description

  The present invention relates to a wiring box installed in a wall surface or the like for mounting a wiring device such as a switch, and a wiring box cover used for the wiring box.

  Conventionally, as a wiring box of this type, a wiring box body having a knock hole or the like in which a cable insertion hole can be formed in a side wall, and a wiring box attached to an upper opening of the wiring box body for mounting wiring equipment. Wiring consisting of a cover body having a mounting portion, and a cover tube attached to the mounting portion of the cover body and covering a tip end of a screw screwed into the mounting portion and preventing damage to a cable in the wiring box body. A box is known (Patent Document 1).

  However, in such a wiring box, if the cover tube (cable protection member) is attached, the cable inside the wiring box body will be damaged by the screws, resulting in electric leakage and short circuit (short circuit), and fire However, there is a risk that the cable protection member may come off, and if the cable protection member comes off, the cable inside the wiring box main body could not be protected.

  Also, since the cable protection member is formed separately from the cover body and is attached later, for example, with an adhesive, not only the problem of poor adhesion, but also a plurality of mounting steps are required, so that assembly costs and material costs are required. However, there was a drawback that the cost was high.

JP-A-2006-046933

  The present invention has been made in view of the above-described conventional drawbacks, and has as its object to provide a wiring box and a wiring box cover that can prevent the cable protection member from falling off the cover body and can be manufactured at low cost.

The above and other objects and novel features of the present invention will become more completely apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are merely for explanation and do not limit the technical scope of the present invention.

In order to achieve the above object, a wiring box of the present invention includes a wiring box body and a wiring box cover integrally formed or provided on the front surface of the wiring box body and having an opening of a predetermined shape. The wiring box cover, wherein the wiring box cover has at least a pair of wiring device mounting portions formed with screw holes for mounting wiring devices, and the wiring device mounting portion has the screw holes. A metal cable protection member for protecting the cable so that the screw does not directly interfere with the cable housed in the wiring box main body when the screw is screwed in from outside is formed by bending, and the metal cable protection member is formed. Comprises a protective wall formed by bending from a protruding tip end of the wiring device mounting portion, and extending toward an inner bottom surface of the wiring box body; Protection walls of a central protective wall provided on the opposite wiring device attachment side, Ri Do a pair of side protecting walls formed bent in opposite to each other from both ends of the central protective wall, the metal The cable protection member has a bottom portion bent and formed to face the bottom surface of the wiring box body, and a screw hole is formed in the bottom portion .

Further, the wiring box cover of the present invention is a wiring box cover attached to the opening of the wiring box main body, wherein the wiring box cover has at least one pair of screw holes for mounting wiring equipment. It has a wiring device mounting portion, and the wiring device mounting portion is provided with the cable so that the screw does not directly interfere with the cable stored in the wiring box main body when a screw is screwed into the screw hole from outside. A metal cable protection member to be protected is formed by bending, and the metal cable protection member is formed by bending from a protruding tip end of the wiring device mounting portion, and extends toward an inner bottom surface of the wiring box body. The protective wall is provided with a central protective wall provided on the opposite side of the wiring device mounting portion, and a central protective wall provided at both ends of the central protective wall. Ri Do and a formed pair of side protecting wall folded toward state, the metallic cable protection member has a bottom portion bent formed to the bottom surface facing the wiring box body, bottom surface Is formed with a screw hole .

As is clear from the above description, the following effects can be obtained in the present invention.
(1) In each of the first and fifth aspects of the present invention, when a screw is screwed into a screw hole of an attaching portion of the cover body to attach the wiring device to the cover body, the screw is protected by the cable protecting member. The tip can be prevented from hitting the cable.
Therefore, it is possible to reliably prevent the cable from being damaged, causing an electric leakage and a short circuit (short circuit) to cause a fire.
(2) Since the cable protection member is formed integrally with the wiring device mounting portion, the cable protection member can be reliably prevented from being damaged without the cable protection member falling off.
(3) Since the cable protection member is formed integrally with the wiring device mounting portion, the cost for manufacturing a separate cable protection member and the cost for assembling are not required, so that the cable protection member can be manufactured at low cost.
(4) Conventionally, the cable protection member can be formed of a material discarded when forming the opening of the wiring box cover.
(5) There is no need to form a flange or the like for attaching the wiring box cover to the front surface of the wiring box main body, and the wiring box main body can be manufactured at low cost.
( 6 ) In each of the inventions according to claims 2 and 6 , the same effects as in the above (1) to ( 5 ) are obtained, and the sensor is buried in the wall surface by a sensor that detects the magnetic force generated by the magnet. It is possible to reliably detect a wiring box and the like.
( 7 ) In each of the inventions according to claims 3 and 7 , the same effects as those of (1) to ( 6 ) can be obtained, and the invention can be used as a so-called wiring box for two or three wiring boxes. Can be.
(8) Also in the invention according to claim 4 , the same effects as in the above (1) to (7) are obtained, and a sliding mechanism that can move the wiring box body in the front-rear direction is provided. The cover can be brought into close contact with the inside of the wall surface.

  Therefore, fire resistance can be improved.

1 to 8 are explanatory diagrams showing a first embodiment of the present invention.
FIG. 9 to FIG. 12 are explanatory views showing a second embodiment of the present invention.
FIGS. 13 to 16 are explanatory diagrams showing a third embodiment of the present invention.
17 and 18 are explanatory views showing a third embodiment of the present invention (cover fixed).
The front view of the wiring box of 1st Embodiment. FIG. 2 is a sectional view taken along line 2-2 of FIG. 1. The front view of the cover for wiring boxes. FIG. 4 is a sectional view taken along line 4-4 of FIG. 3. Explanatory drawing of the state which forms a cable protection member. Explanatory drawing of a slide mechanism. FIG. 2 is a front view of a state where a wiring device is attached. FIG. 8 is a sectional view taken along line 8-8 of FIG. 7. The front view of the wiring box of 2nd Embodiment. FIG. 12 is a sectional view taken along line 12-12 of FIG. 11. The front view of the cover for wiring boxes. FIG. 12 is a sectional view taken along line 12-12 of FIG. 11. The front view of the wiring box of 3rd Embodiment. FIG. 14 is a sectional view taken along the line 14-14 in FIG. 13; The front view of the cover for wiring boxes. FIG. 16 is a sectional view taken along line 16-16 of FIG. 15. The front view of the wiring box of 4th Embodiment. FIG. 18 is a sectional view taken along line 18-18 of FIG. 17;

Hereinafter, the present invention will be described in detail with reference to the drawings for carrying out the present invention.
In the first embodiment for carrying out the present invention shown in FIGS. 1 to 8, reference numeral 1 denotes a wiring box installed inside a wall 3 of a building or the like for mounting a wiring device 2 such as a switch.
As shown in FIGS. 1 and 2, the wiring box 1 has a knock hole 4 in which a cable insertion hole can be formed in a side wall, and a plurality of through holes 5 in this embodiment, and a pair of through holes 5 in this embodiment. A wiring box cover 6 attached to the wiring box body 6 made of a metal material having a box shape and a substantially rectangular shape in a front view and attached to the opening 8 of the wiring box body 6 by screws 7 passing through the through holes 5. 9.

  As shown in FIGS. 3 and 4, the wiring box cover 9 is a cover having a substantially rectangular shape in front view (substantially the same shape as the wiring box body 6 in front view) and having a substantially square opening 10 in a substantially central portion. At least one pair of a main body 11 and a screw hole 12 for mounting the wiring device 2 provided near the edge of the opening 10, and in this embodiment, a wiring device mounting portion opposed via the pair of openings 10. 13 and a cable 15 housed inside the wiring box body 6 when the screw 14 is screwed into the screw hole 12 and is integrally formed on the rear side of the wiring device mounting portion 13. And a cable protection member 16 that protects the cable 15 so that the cable 15 does not hit.

The pair of wiring device mounting portions 13 includes a pair of substantially donut-shaped magnets 18 each having a through hole 17 so as not to close the screw hole 12. It is formed in a concave shape so as not to protrude forward from the cover body 11. In the present embodiment, the recess is formed such that the front surface of the magnet 18 and the front surface of the cover main body 11 are substantially flush. In addition, both sides of the wiring device mounting portion 13 are openings 10 which are largely cut out so that the cover main body 11 does not affect the magnetic force of the magnet 18.
By providing such a pair of magnets 18, even after the wiring box 1 is buried inside the wall surface 3 of the building, the magnetic force of the magnet 18 is detected using a sensor or the like, so that the wiring box 1 The position can be reliably detected.

  As shown in FIG. 5, in the present embodiment, when the opening 10 of the cover main body 11 is punched out, the cable protection member 16 leaves a metal plate so as to extend from the wiring device mounting portion 13 to the center. The portion is bent at a substantially right angle, and a cable protection member 16 is formed on the rear side of the wiring device mounting portion 13 so as to be integrated with the wiring device mounting portion 13.

  In the present embodiment, the cable protection member 16 is provided with a protection wall surface 19 that is bent from the protruding tip end of the wiring device mounting portion 13 and extends toward the inner bottom surface of the wiring box body. The protective wall surface 19 includes a central protective wall surface 19a provided on the side of the wiring device mounting portion facing the wiring device, and a pair of side protective wall surfaces 19b formed by bending both ends of the central protective wall surface 19a so as to face each other. When the cable 16 is stored in the wiring box body 6, the protection wall 19 prevents the cable from entering in the axial direction of the screw hole 13 of the wiring device mounting portion 13, and the screw 14 is screwed into the screw hole 12. At this time, the cable 16 is protected so that the screw 14 does not directly interfere with the cable 15 housed inside the wiring box body 6.

  It is preferable that the cable protection member 19 has a pair of side protection wall surfaces 19b. However, even if the cable protection member 19 has only the center protection wall surface 19a, the interference prevention effect can be obtained. The cable protection member 19 may be configured.

  The central protection wall surface 19a of the cable protection member 16 is bent at a substantially right angle near the lower end to form a bottom surface portion 20, and a screw hole 21 is formed in the bottom surface portion 20. The screw hole 21 is formed so as to be coaxial with the through hole 5 of the wiring box body 6, and the screw 7 passing through the through hole 5 of the wiring box body 6 is screwed with the screw hole 21 of the cover body 11. Then, the wiring box cover 9 is attached to the wiring box body 6.

  On one side surface of the wiring box body 6, the wiring box body 6 can be slid in the front-rear direction, and the wiring box cover 9 can be slid so as to come into contact with the inside of the wall surface 3 of the building in surface contact. The slide mechanism 22 is provided.

  As shown in FIG. 6, the slide mechanism 22 includes an engagement piece 23 fixed to one side surface of the wiring box main body 6 and a mounting plate 24 engaged with the engagement piece and fixed inside the wall of the building. It is composed of

  The engaging piece 23 is formed in a substantially hat-shaped steel shape when viewed from the front, and the upper and lower projecting pieces 25 are formed with long holes 26, respectively. The engaging piece 23 is fixed to one side surface of the wiring box main body 6 by welding in the present embodiment.

  The upper and lower protruding pieces 25 of the engaging piece 23 are engaged with the engaged portion 27 of the mounting plate 24 so as to be slidable in the front-rear direction. The stopper pin 28 provided on the 24 is inserted. As a result, the wiring box 1 to which the engagement pieces 23 are fixed is fixed to the wall surface of the building in a state in which it can be moved in the front-rear direction by the length of the long hole 26. In this embodiment, a screw is used as the stopper pin 28, and the mounting plate 24 has a screw hole into which the screw is screwed.

  By mounting the wiring box 1 of the present invention inside the wall surface 3 of the building using such a slide mechanism 21, when the screw 14 is screwed into the screw hole 12 when the wiring device 2 is mounted, the wiring box 1 is moved forward. (Wall side), the wiring box cover 9 adheres to the inside of the wall surface 3 of the building in a surface contact state, and it is possible to prevent a gap from being formed between the inside of the wall surface and the wiring box cover 9, and fire resistance Can be enhanced.

  As shown in FIGS. 7 and 8, the wiring box 1 having the above configuration is fixed via a slide mechanism 21 to an installation portion of a building where the wiring box 1 is installed. At this time, the knock hole 4 of the wiring box body 6 is opened by a tool or the like, and the cable 15 is inserted into the opened knock hole 4 (cable insertion hole) using a fireproof connector 30 to which a flexible tube 29 is attached. Wired.

After the cable 15 and the wiring device 2 are wired, the wiring device 2 is screwed into the screw hole 12 of the wiring device mounting portion 13 so that the wiring box cover 9 attached to the wiring box 1 is moved toward the wall surface. The wiring device 2 is fixed to the outside of the wall surface while sliding.
By mounting in this manner, the opening 2 of the wiring box 1 comes into close contact with the wall plate 26, so that it is possible to reliably prevent a fire from entering the wiring box 1.

[Different modes for carrying out the invention]
Next, different embodiments for implementing the present invention shown in FIGS. 9 to 18 will be described. In the description of these different embodiments for carrying out the present invention, the same components as those in the first embodiment for carrying out the present invention will be assigned the same reference numerals and overlapping explanations will be omitted.

  In the second embodiment for carrying out the present invention shown in FIGS. 9 to 12, the main difference from the first embodiment for carrying out the present invention is that The wiring box body 6A and the cover body 11A formed in two pairs (two pairs of wiring device mounting portions 13; a total of four places) having Even with the cover 9A, the same operation and effect as those of the first embodiment for implementing the present invention can be obtained, and the cover 9A can be used as a so-called two wiring box.

  In the present embodiment, two pairs of the wiring device mounting portions 13 are formed, but the magnets 18 are provided only in any one pair of the wiring device mounting portions 13. By providing the magnet 18 in this manner, the sensor can reliably detect the wiring box 1A buried in the wall without interference of magnetic force.

  A slit 31 into which a partition wall can be inserted is formed in the cover main body 11A of the wiring box cover 9A, and a fire-resistant partition wall can be inserted and used as necessary.

  Note that the wiring device mounting portion 13 where the magnet 18 is not provided (hereinafter, referred to as a “wiring device mounting portion 13a”) is not formed in a concave shape and is in a substantially flat state. Further, both sides of the wiring device mounting portion 13 are largely cut out so that the cover main body 11A does not affect the magnetic force of the magnet 18, but since the magnet 18 is not arranged in the wiring device mounting portion 13a, Notches need not be provided on both sides.

  The third embodiment for carrying out the present invention shown in FIGS. 13 to 16 is different from the second embodiment for carrying out the present invention mainly in that a wiring device mounting portion 13 is provided at a predetermined interval in the left-right direction. A wiring box 1B and a wiring box 1B configured as described above are used in that a wiring box main body 6B and a cover main body 11B formed in three pairs (three pairs of wiring device mounting portions 13, three in total) having Even with the cover 9B, the same operation and effect as those of the first embodiment for carrying out the present invention can be obtained, and the cover 9B can be used as a so-called three wiring box.

  Also in this embodiment, a slit 31 into which a partition wall can be inserted is formed in the cover main body 11B of the wiring box cover 9B.

  The fourth embodiment for carrying out the present invention shown in FIGS. 17 and 18 is different from the first embodiment for carrying out the present invention mainly in that a wiring box cover 9C is integrally formed. With the wiring box 1C using the wiring box main body 6C, the same operation and effect as those of the first embodiment for implementing the present invention can be obtained even with such a wiring box.

In such a wiring box 1A, a wiring box body and a cover body are integrally formed by bending an iron plate, forging, casting, or the like.
In the embodiment of the present invention, the cable protection member is bent and formed so as to be integrated with the wiring device mounting portion. However, the wiring device mounting portion and the cable protection member are integrally formed by forging or casting. May be formed.

  In addition, although the wiring box and the wiring box cover provided with the magnet have been described, the magnet may not necessarily be provided and may not have the slide mechanism.

  Furthermore, in the embodiment of the present invention, the wiring box having three to three pairs of wiring device mounting portions and the cover for wiring boxes (so-called one to three) have been described. For example, a wiring box having four or five pairs and a wiring box cover (for four or five) may be used.

  INDUSTRIAL APPLICATION This invention is utilized in the industry which manufactures a wiring box and a cover for wiring boxes.

1, 1A, 1B, 1C: wiring box,
2: Wiring equipment 3: Building wall,
4: knock hole, 5: through hole,
6: Wiring box body, 7: Screw,
8: Opening,
9, 9A, 9B: Cover for wiring box,
10: Opening, 11: Cover body,
12: Screw hole, 13: Wiring fixture mounting part,
14: Screw, 15: Cable,
16: cable protection member, 17: through hole,
18: magnet, 19: protective wall,
20: bottom part, 21: screw hole,
22: slide mechanism, 23: engagement piece,
24: mounting plate, 25: protrusion,
26: long hole, 27: engaged portion,
28: stopper pin, 29: flexible tube,
30: fire resistant connector, 31: slit.

Claims (7)

A wiring box body and a wiring box cover integrally formed or provided on the front surface of the wiring box body, and having a predetermined-shaped opening, wherein the wiring box cover includes: At least one pair of wiring device mounting portions formed with screw holes for mounting wiring devices is provided in the wiring box main body when screws are screwed into the screw holes from outside. A metal cable protection member that protects the cable so that the screw does not directly interfere with the formed cable is formed by bending, and the metal cable protection member is formed by bending from a protruding tip end of the wiring device mounting portion. And a protective wall extending toward the inner bottom surface of the wiring box main body, and the protective wall is provided on the side of the facing wiring device mounting portion. A central protective wall consists of a pair of side protecting walls formed bent in opposite to each other from both ends of the central protective wall, said metal cable protective member, so as to face the bottom of the wiring box body A wiring box having a bent bottom surface portion and a screw hole formed in the bottom surface portion . The at least one pair of wiring device mounting portions is provided with a pair of magnets having through holes so as not to block the screw holes, and the wiring device mounting portion provided with the pair of magnets is stepped down to the rear side. The wiring box according to claim 1, wherein The wiring box according to claim 1 , wherein at least two pairs of the wiring device mounting portions are formed at predetermined intervals in the left-right direction. A wiring mechanism is provided on a side surface of the wiring box main body so that the wiring box main body can be slid in the front-rear direction and the wiring box cover can be slid so as to abut on a wall surface of the building in a surface contact state. The wiring box according to any one of claims 1 to 3 , wherein A wiring box cover attached to an opening of a wiring box main body, wherein the wiring box cover has at least one pair of wiring device mounting portions formed with screw holes for mounting a wiring device. A metal cable protection member for protecting the cable so that the screw does not directly interfere with the cable housed in the wiring box body when the screw is screwed into the screw hole from the outside is formed on the mounting portion. The metal cable protection member is provided with a protection wall formed by bending from a protruding tip end of the wiring device mounting portion and extending toward an inner bottom surface of the wiring box body, and the protection wall faces each other. A central protective wall provided on the wiring device mounting portion side, and a pair of side portions formed by bending both ends of the central protective wall so as to face each other. Ri Do from the protection wall, wherein the metal cable protection member has a bottom portion bent formed to the bottom surface facing the wiring box body, the bottom surface portion, wiring screw hole is formed Box cover. The at least one pair of wiring device mounting portions is provided with a pair of magnets having through holes so as not to block the screw holes, and the wiring device mounting portion provided with the pair of magnets is stepped down to the rear side. 6. The cover for a wiring box according to claim 5, wherein: 7. The wiring box cover according to claim 5 , wherein at least two pairs of the wiring device mounting portions are formed at predetermined intervals in the left-right direction. 8.

Images