JP5917451B2 - Wiring box - Google Patents

Description

  The present invention relates to a fireproof structure wiring box installed in a wall surface for mounting wiring devices such as switches and outlets.

  A conventional fireproof structure wiring box has a wiring box body made of a metal material in which a cover mounting portion having a screw hole protruding inward at an opening is formed, and a wiring device mounted by the cover mounting portion of the wiring box body And a ring-shaped first and second sealing material attached to the surface of the cover body.

  The fireproof structure wiring box constructed in this way is used to attach the wiring device by a screw screwed into the screw hole of the cover body, so that the screw for attaching the wiring device is inserted into the wiring inserted in the wiring box body, and is insulated. There were defects that caused defects, electric leakage, short circuit, and could cause fire.

JP 2013-27108 A

  In view of the conventional drawbacks as described above, the present invention has a problem that even if a screw is screwed into a screw hole of a cover in order to attach a wiring device, the screw is stuck into the wiring inserted into the wiring box body. It is an object of the present invention to provide a wiring box that can be reliably prevented and can maintain a fireproof structure.

  The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.

  However, the drawings are for explanation only and do not limit the technical scope of the present invention.

In order to achieve the above object, the present invention provides a wiring box body made of a metal material in which a cable insertion hole is formed in a side wall, or one or both of knock holes for forming a cable insertion hole are formed, A cover portion for attaching a wiring device to the wiring box body having a mounting portion whose lower end portion has an inverted chevron shape attached to the upper opening of the wiring box body integrally or in a fixed state, and an attachment portion for the cover portion A projection formed on the bottom surface of the wiring box body corresponding to the upper surface and projecting in a mountain shape, and a cover cylinder in which the lower end is locked by the projection and the upper end is locked by the mounting portion of the cover And constitutes a wiring box.

As is clear from the above description, the present invention has the following effects.
(1) According to claim 1, even if a screw for attaching the wiring device is screwed to the attachment portion of the cover portion with the cover cylinder, it is reliably prevented that the screw is stuck into the wiring inserted into the wiring box body. can do.

Therefore, it is possible to reliably prevent problems that may cause a fire due to poor insulation, electric leakage, and short circuit due to the installation of the wiring device.
(2) According to the above (1), the cover tube can be attached only by being locked to the attaching portion of the cover portion and the mountain-shaped protruding portion formed on the bottom surface of the wiring box body.

Therefore, it is easy to mount and can be mounted in a short time.
(3) According to the above (1), the installation of the cover cylinder does not form a hole or notch through which a flame enters from the outside, so that the fireproof structure can be reliably maintained.
(4) In claim 2, the same effects as in the above (1) to (3) can be obtained.

The front view of the 1st form for carrying out the present invention. The top view of the 1st form for carrying out the present invention. The rear view of the 1st form for carrying out the present invention. Sectional drawing in alignment with line 4-4 in FIG. Explanatory drawing of a wiring box main body. Explanatory drawing of the cover member as a cover part of the 1st form for implementing this invention. Explanatory drawing of the state attached to the attachment member of the 1st form for implementing this invention. Explanatory drawing of the state detected with the magnetic force detector of the 1st form for implementing this invention. Explanatory drawing of the attachment state of the wiring fixture of the 1st form for implementing this invention. The front view of the 2nd form for carrying out the present invention. The top view of the 2nd form for carrying out the present invention. The rear view of the 2nd form for carrying out the present invention. The side view of the 2nd form for carrying out the present invention. Sectional drawing which follows the 14-14 line | wire of FIG. The front view of the 3rd form for carrying out the present invention. The top view of the 3rd form for carrying out the present invention. Sectional drawing which follows the 17-17 line | wire of FIG. The front view of the 4th form for carrying out the present invention. The top view of the 4th form for carrying out the present invention. Sectional drawing which follows the 20-20 line of FIG.

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

  In the first embodiment for carrying out the present invention shown in FIGS. 1 to 9, reference numeral 1 denotes a wiring box of the present invention having a fireproof structure, and the wiring box 1 is a box-shaped wiring box body made of a metal material such as steel. 2 and cable insertion holes formed in the side walls 2a, 2a, 2a, 2a of the wiring box body 2 can be formed, and the side walls 2a, 2a, 2a, 2a are thin walls 3 until use. Screws for attaching the integrated knock holes 4, 4, 4, 4 and a cover member as a cover portion formed so as to protrude from the opposite side surface of the opening 2b of the wiring box body 2 to the inside. Cover part attachment pieces 6 and 6 in which holes 5 are formed, and long hole-like screw insertion holes 8, 8, 8 and 8 fixed to the cover part attachment pieces 6 and 6 with screws 7 and 7 are formed. Cover member 9 as a cover part made of a metal material such as steel The sensor 10 protrudes inwardly from the substantially central portion of the cover member 9 and is fixed to the upper surface with sensors 10 and 10 using a doughnut-shaped magnet for confirming the embedded position. Mounting portions 12, 12 having screw holes 11, 11 to be screwed, and protrusions 13 whose upper surfaces formed on the bottom surface of the wiring box body 2 corresponding to the mounting portions 12, 12 protrude in a mountain shape, 13 and the cover cylinders 14 and 14 whose lower ends are locked by the protrusions 13 and 13 and whose upper ends are locked to the mounting portions 12 and 12 of the cover member 9, and the bottom surface of the wiring box body 2 and Normally, the wiring box body 2 that is closed on the side wall and is opened by pressing with a screwdriver or the like is used to fix the wiring box body 2 to a mounting member 15 such as a pillar or wall surface with tapping screws 16 and 16. Attached is constituted by a dowel holes 17,17,17,17.

  In the wiring box 1 having the above-described configuration, necessary mounting knock holes 17 and 17 of the wiring box body 2 are opened using a screwdriver or the like according to the mounting portion, and tapping screws 16 and 16 are provided in the opened knock holes 17 and 17. By inserting, the mounting member 15 is screwed and fixed.

  Also, the wiring holes 18 are opened to the knock holes 4 and 4 of the wiring box body 2 and the fireproof connectors 20 and 20 to which the flexible tubes 19 and 19 into which the wirings 18 and 18 are inserted are connected to the wiring box 2. Install so that it is housed inside.

  In this state, as shown in FIG. 7, the wiring box 1 is covered with a wall plate 21 at the top.

  In this state, the position of the sensors 10 and 10 is specified using the magnetic force detector 22 considered by the present applicant, the wall plate 21 of the part is cut and removed, and the opening of the wiring box 1 is opened.

  In this state, after the wires 18 and 18 in the wiring box body 2 are connected to the wiring device 23, the cover member 9 is attached with the tapping screws 24 and 24 through the screw insertion holes 25 and 25 of the wiring device 23. The wiring device 23 and the wiring box 1 can be fixed by screwing with the parts 12 and 12.

  At this time, the tapping screws 24 and 24 screwed to the attachment portions 12 and 12 of the cover member 9 move in the cover cylinders 14 and 14, so that they do not contact the wires 18 and 18 in the wiring box body 2, Short circuit and disconnection can be surely prevented.

[Different forms for carrying out the invention]
Next, different modes for carrying out the present invention shown in FIGS. 10 to 20 will be described. In the description of the different embodiments for carrying out the present invention, the same components as those in the first embodiment for carrying out the present invention are denoted by the same reference numerals, and redundant description is omitted.

  In the second embodiment for carrying out the present invention shown in FIGS. 10 to 14, the main difference from the first embodiment for carrying out the present invention is that the upper ends of the three sides are bent inward, The side wall 2a that is fixed by welding or the like covering one side surface and the upper end of the side wall 2a are bent inward to integrally form the wiring box body 2A and the cover portion 9A. The same effect as the first embodiment for carrying out the present invention can be obtained.

  The third embodiment for carrying out the present invention shown in FIGS. 15 to 17 is mainly different from the second embodiment for carrying out the present invention in that the wiring box main body 2B is a box for two pieces. In the middle of the cover portion 9B, locking grooves 27 and 27 for locking the partition wall 26 are formed, and the lower portion of the partition wall 26 is supported on the bottom surface of the wiring box body 2B. The wiring box 1B configured as described above has the same function and effect as the second embodiment for carrying out the present invention in that the two pairs of supporting protrusions 28, 28, 28, 28 are formed. can get.

  The fourth embodiment for carrying out the present invention shown in FIGS. 18 to 20 is mainly different from the first embodiment for carrying out the present invention in that there are two wiring box main bodies 2C, Even in the wiring box 1C configured in this way, the book is used in that the cover member 9C is used as two cover parts attached so as to cover the outer periphery of the opening 2b of the wiring box body 2C. The same effect as the first embodiment for carrying out the invention can be obtained.

Note that the present invention can be similarly applied to the wiring boxes for three, four, and five other than the above embodiments.
Further, all the cable insertion holes formed in the side wall may be formed by knock holes, may be cable insertion holes that are opened in advance, or may be ones in which knock holes and cable insertion holes are formed.

  The present invention is used in the industry for manufacturing wiring boxes.

1, 1A, 1B, 1C: wiring box,
2, 2A, 2B: Wiring box body,
3: Thin part 4: Knock hole,
5: Screw hole, 6: Cover part mounting piece,
7: Screw, 8: Screw insertion hole,
9, 9A, 9B, 9C: Cover member as a cover part 10: Sensor, 11: Screwing hole,
12: mounting portion, 13: protrusion,
14: Cover cylinder, 15: Mounting member,
16: Tapping screw, 17: Knock hole,
18: Wiring, 19: Flexible tube,
20: Fireproof connector, 21: Wall board,
22: Magnetic force detector, 23: Wiring device,
24: Tapping screw, 25: Screw insertion hole,
26: partition wall, 27: locking groove,
28: Supporting protrusion.

Claims (2)

A wiring box body made of a metal material in which one or both of a cable insertion hole is formed in the side wall, or a knock hole for forming the cable insertion hole, and an upper opening of the wiring box body are integrated or A cover portion for attaching a wiring device to the wiring box body having an attachment portion whose lower end portion has an inverted chevron shape attached in a fixed state, and formed on the bottom surface of the wiring box body corresponding to the attachment portion of the cover portion A wiring box comprising: a protruding portion whose upper surface protrudes in a mountain shape; and a cover cylinder whose lower end portion is locked by the protruding portion and whose upper end portion is locked by the mounting portion of the cover portion. . The cable insertion hole that can be formed on the side wall of the wiring box body is a thin part and integrated with the side wall until it is used, and a donut-shaped magnet for checking the embedded position is attached to the mounting part of the cover part. The wiring box according to claim 1, wherein the sensor used is provided.

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