JP2016046933A - Wiring box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiring box surely preventing a cable from being damaged by a tip of screw which is used to fix a wiring accessory on a cover body, where the tip of the screw goes inside a cover tube so that, in a conventional case, the tip presses and contacts the cable in the wiring box.SOLUTION: The wiring box comprises: a wiring box body having one or both of a cable insertion hole and/or a knock hole capable of forming a cable insertion hole on a side wall thereof; a cover body having at least two or more of fitting parts with a screw insertion hole to fit a wiring accessory, in which the wiring accessory is fitted on an upper opening portion of the wiring box body integrally or in a fixing condition; and cover tubes fitted respectively at least two or more fitting parts of the cover body to cover a tip of screw to be screwed into the fitting parts so that the cover tubes can prevent a cable in the wiring box body from being damaged.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a wiring box installed in a wall surface for mounting a wiring device such as a switch or an outlet.

  A conventional wiring box has at least two or more screw holes for mounting a wiring box body having a cable insertion hole formed in a side wall and a wiring device attached to an upper opening of the wiring box body. It is comprised with the cover body which has an attaching part.

  In the wiring box configured in this way, after the cable inserted inside the cable insertion hole of the wiring box body is routed to the wiring device, the wiring device is screwed into the screw holes of at least two mounting portions of the cover body. Are fixed by screwing.

  When fixing this wiring device to the cover body, the tip of the screw protrudes from the mounting part into the wiring box body, and damages the cable in the wiring box body, causing electric leakage and short circuit (short), There was a major drawback of causing a fire.

JP 2010-288401 A JP 2008-61499 A

  In view of the above-described conventional drawbacks, the present invention is such that when the wiring device is screwed to the cover body, the tip of the screw enters the cover tube, and the tip of the screw is placed in the wiring box as in the prior art. An object of the present invention is to provide a wiring box that can prevent the cable from being pressed against the cable and reliably prevent the cable from being damaged.

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 main body in which either or both of a cable insertion hole and a knock hole capable of forming a cable insertion hole are formed in a side wall, and an upper portion of the wiring box main body. A cover body having at least two or more mounting portions formed with screw insertion holes for mounting wiring devices mounted integrally or fixedly on the opening, and at least two or more mounting portions of the cover body; A wiring box is constituted by a cover tube that covers the tip of each screw that is screwed into the mounting portion and that prevents the cable in the wiring box body from being damaged.

As is clear from the above description, the present invention has the following effects.
(1) According to the first aspect, when the screw is screwed into the screw hole of the attachment portion of the cover body in order to attach the wiring device to the cover body, the tip end portion of the screw can be moved in the cover tube.
Therefore, it is possible to reliably prevent the leading end of the screw fixing the wiring device from being damaged, causing a leak, a short circuit (short circuit), and a fire.
(2) According to the above (1), since it is only necessary to attach the cover tube to at least two attachment portions of the cover body, it is possible to carry out relatively easily and to attach the cover tube to the wiring box body. No processing is required and it can be manufactured at low cost.
(3) In claim 2, the same effects as in the above (1) and (2) can be obtained, and the cover tube can be securely fixed to the attachment portion of the cover body.
(4) Claims 3 and 4 can provide the same effects as in the above (1) and (2).

The front view of the 1st form for carrying out the present invention. Sectional drawing which follows the 2-2 line of FIG. The front view of the wiring box main body of the 1st form for carrying out the present invention. Sectional drawing which follows the 4-4 line of FIG. The front view of the cover body of the 1st form for carrying out the present invention. Sectional drawing which follows the 6-6 line of FIG. The top view of the cover body which attached the cover tube of the 1st form for implementing this invention. The side view of the cover body which attached the cover tube of the 1st form for implementing this invention. The front view of the state which attached the wiring fixture of the 1st form for implementing this invention. Sectional drawing which follows the 10-10 line of FIG. The front view of the 2nd form for carrying out the present invention. Sectional drawing which follows the 12-12 line of FIG. Sectional drawing of the state which attached the wiring fixture of the 2nd form for implementing this invention. The front view of the 3rd form for carrying out the present invention. FIG. 15 is a sectional view taken along line 15-15 in FIG. 14; Sectional drawing of the state which attached the wiring fixture of the 3rd form for implementing this invention. The front view of the 4th form for carrying out the present invention. FIG. 18 is a sectional view taken along line 18-18 in FIG. 17; Sectional drawing of the state which attached the wiring fixture of the 4th form for implementing this invention. The front view of the 5th form for carrying out the present invention. Sectional drawing which follows the 21-21 line of FIG. Explanatory drawing of a pair of U-shaped clamping piece. Explanatory drawing of the cover tube in which a pair of latching piece was formed. The front view of the 6th form for carrying out the present invention. FIG. 25 is a sectional view taken along line 25-25 in FIG. 24; The top view of a partition wall. The side view of a partition wall. The front view of the 7th form for implementing this invention. FIG. 29 is a sectional view taken along line 29-29 in FIG. 28; The top view of a different partition wall. The side view of a different partition wall.

  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 FIG. 1 to FIG. 10, 1 is a wiring box of the present invention, and this wiring box 1 has cable insertion holes formed in the side walls 2a, 2a, 2a, 2a. Wiring box body made of a metal box in the shape of a square box in which knock holes 3, 3, 3, 3 having outer peripheral portions connected by thin portions 2b are formed and a plurality of screw insertion holes 4 are formed on the bottom surface 5, cover mounting pieces 7, 7 having screw holes 6 formed so as to protrude inward on the upper opening 5 a side of the wiring box body 5, and the cover mounting pieces 7, 7 to the wiring box body 5. A frame-shaped cover member 10 made of a metal material in which screw insertion holes 9 and 9 attached by screws 8 and 8 are formed so as to be in contact with the end portion of the upper opening 5a, and a center of the cover member 10 facing each other. To install the wiring device formed at the position Wiring device mounting pieces 12, 12 in which screw insertion holes 11 serving as inclined surfaces with a lower central upper surface are formed, and the upper part bonded and fixed to the lower surface of the wiring device mounting pieces 12, 12 with an adhesive 13 are expanded. The upper portions of the cover tubes 14 and 14 can be clamped by protruding outward from both ends of the cover tubes 14 and 14 and the wiring device mounting pieces 12 and 12 and bending them with a tool such as a nipper. The cover tube sandwiching pieces 15, 15 that can be formed, and the donut-shaped detection magnets 16, 16 that are bonded and fixed to the upper surfaces of the wiring device attaching pieces 12, 12.

  In the wiring box 1 having the above-described structure, the knock hole 3 of the part to be used is opened with a screwdriver or the like to form the cable insertion hole 3A, and the building installation part of the part where the wiring box 1 is embedded as shown in FIG. 17 is fixed with screws 18, 18, 18, 18 inserted into a plurality of screw insertion holes 4, 4, 4, 4 on the bottom surface of the wiring box body 5.

  In addition, before and after installing the wiring box body 5 on the installation portion 17 of the building, the end portion of the electric cable 19 to be wired by the wiring box body 5 is housed inside.

  At this time, the cable insertion hole 3A of the wiring box body 5 is wired using the fireproof connector 21 to which the flexible tube 20 is attached, and the cover body 10 is connected with the screws 8, 8 using the screw insertion holes 9, 9. Secure with screws.

In this state, the wiring box 1 is covered with the wall plate 22.
After this work, the inventor considers the wiring box 1 embedded in the wall plate 22 from above the wall plate 22, and detects the positions of the donut-shaped magnets 16, 16 with a manufactured wiring box detector or the like, The inventor considers the detected position and forms a hole 23 in the wall plate 22 using a box hole cutter or the like, which is a wiring box drilling jig manufactured by the inventor. After wiring with the tool 24, the screws 18, 18 of the wiring tool 24 are screwed into the screw insertion holes 11, 11 of the wiring tool mounting pieces 12, 12 of the cover body 10 and fixed.

  At this time, the tips of the screws 18 and 18 that pass through the screw insertion holes 11 and 11 of the wiring device mounting pieces 12 and 12 of the cover body 10 automatically enter and enter the cover tubes 14 and 14. Without contacting the electric cable 19 in the box body 5, the electric cable 19 can be reliably prevented from being damaged by the screws 18 and 18.

[Different forms for carrying out the invention]
Next, different modes for carrying out the present invention shown in FIGS. 11 to 31 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. 11 to 13, 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, A side wall 2a fixed by welding or the like covering one side, and an upper end portion thereof are bent inward to integrally form the wiring box body 5A and the cover body 10A, and the wiring device in which the screw insertion holes 11 and 11 are formed. In the wiring box 1A configured as described above, the present invention is implemented in that the upper portions of the cover tubes 14 and 14 are clamped and fixed to the lower surfaces of the attachment pieces 12 and 12 by the cover tube clamping pieces 15 and 15. Therefore, the same effect as the first embodiment can be obtained.

  The third embodiment for carrying out the present invention shown in FIGS. 14 to 16 is mainly different from the first embodiment for carrying out the present invention in that there are two wiring box bodies 5B, Wiring device mounting pieces 12, 12, 12, 12 in which two cover bodies 10B covering the outer peripheral portion of the opening 5b of the wiring box body 5B and the screw insertion holes 11 of the two cover bodies 10B are formed. The wiring box 1B configured as described above is used to implement the present invention in that the adhesive tube 13 is bonded and fixed to the upper surface of the inclined surface 14a of the cover tubes 14, 14, 14, and 14 on the lower surface of the wiring box 1B. The same effect as the first embodiment can be obtained.

  The fourth embodiment for carrying out the present invention shown in FIGS. 17 to 19 is mainly different from the third embodiment for carrying out the present invention in that a screw insertion hole 11 of the cover body 10B is formed. Spiral grooves 25, 25, 25, 25 are formed in the outer peripheral portions of the screw insertion holes 11, 11, 11, 11 of the wiring device mounting pieces 12, 12, 12, 12, and the spiral grooves 25, 25, 25, 25 are formed. Even if the wiring box 1C is constructed in this way, the upper part of the inclined surfaces 14a, 14a, 14a, 14a of the cover tubes 14, 14, 14, 14 is screwed and fixed to The same effect as the third embodiment for carrying out the invention can be obtained.

  The fifth embodiment for carrying out the present invention shown in FIGS. 20 to 23 is mainly different from the first embodiment for carrying out the present invention, in that a C-shape is formed on the expanded upper portion. The outer peripheral portion of the screw insertion holes 11 and 11 of the wiring device mounting pieces 12 and 12 in which the cover tube 14A in which a pair of locking pieces 26 and 26 are formed is used and the screw insertion holes 11 and 11 of the cover body 10 are formed. A pair of U-shaped clamping pieces 27, 27 for clamping the pair of locking pieces 26, 26 of the cover tube 14A and the upper portion of the cover tube 14A so as to communicate with the screw insertion holes 11, 11 are used. Thus, even with the wiring box 1D configured as described above, the same effects as those of the first embodiment for carrying out the present invention can be obtained.

  The pair of locking pieces 26, 26 of the cover tube 14 </ b> A and the pair of U-shaped sandwiching pieces 27, 27 of the cover body 10 are sandwiched between the upper portion of the cover tube 14 </ b> A by inserting screws of the cover body 10. When pressed so as to communicate with the holes 11, 11, the pair of U-shaped sandwiching pieces 27, 27 are bent downward, and a pair of locking pieces 26, inside the pair of sandwiching pieces 27, 27, 26 is performed by entering.

  The sixth embodiment for carrying out the present invention shown in FIGS. 24 to 27 is mainly different from the fifth embodiment for carrying out the present invention in that two wiring box main bodies 5B and this wiring are used. Two cover bodies 10C that cover the outer peripheral portion of the opening 5b of the box body 5B and have partition wall locking grooves 28, 28 formed in the inner central portion, and the partition wall locking grooves of the cover body 10C 28 and 28, both ends are inserted and the partition wall 29 that divides the wiring box main body 5B into two parts is used. Even in the wiring box 1E configured in this way, the first embodiment for carrying out the present invention is used. 5 can be obtained by dividing the wiring box body 5B into two by the partition wall 29.

  As shown in FIGS. 26 and 27, the partition wall 29 has a thickness dimension in which both end portions are inserted into the partition wall locking grooves 28, 28, and both end portions are inserted into the partition wall locking grooves 28, 28. The partition wall body 30 is formed so that it can be moved in the up-down direction in a state in which it is inserted, and is folded when used for a wiring box body having a low height at a position near the lower portion of the partition wall body 30. Bend-cutting groove 31 formed so that it can be cut by cutting, locking pieces 32, 32 formed at the upper ends of both ends of the partition wall body 30, and a lower position of this one locking piece 32. The stopper piece 33 is formed so as to enter the bottom surface of the cover body 10C when moved in the direction of the one locking piece 32 formed to be positioned.

  The seventh embodiment for carrying out the present invention shown in FIGS. 28 to 31 is mainly different from the sixth embodiment for carrying out the present invention in that three wiring box bodies 5C and this wiring are used. Three cover bodies 10D that cover the outer peripheral portion of the opening 5c of the box body 5C and that have partition wall locking grooves 28, 28, 28, 28 formed in the inner central portion, and a partition of the cover body 10D The wiring box 1F configured in this way is also used in that the partition walls 29 and 29 are inserted into the wall locking grooves 28, 28, 28, and 28 to divide the wiring box body 5C into three parts. The same effects as those of the fifth embodiment for carrying out the present invention can be obtained, and the wiring box main body 5C can be divided into three parts by the partition walls 29 and 29.

The partition walls 29, 29 may be formed as shown in FIGS. 26 and 27, or as shown in FIGS. 30 and 31, the partition wall locking grooves 28, 28, 28 may be used. , 28 when both ends are inserted into a partition wall body 30A formed in a thickness dimension and the wiring box body having a low height at a position near the lower portion of the partition wall body 30A is bent and cut. Bending and cutting groove 31 formed so as to be removed, notches 34 and 34 formed in the vertical direction at upper positions near both ends of the partition wall main body 30A, and the notches 34 and 34 Are formed by elastic locking pieces 35, 35 formed by bending the inner upper portion of the partition wall in the opposite direction, and inserting both end portions of the partition wall main bodies 30A, 30A into the partition wall locking grooves 28, 28, 28, 28. By Elastic locking pieces 35,35,35,35 locked by applying pressing the sides of the partition wall locking grooves 28,28,28,28 elastically.
In addition, although each embodiment which implements this invention demonstrated what used the wiring box main body and cover body which were formed using the metal material, this invention is not restricted to this, In order to attach a wiring apparatus to a wiring box main body. If it is a wiring box body made of a synthetic resin material in which no nut cylinder is formed, it can be used similarly.

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

1, 1A, 1B, 1C, 1D, 1E, 1F: wiring box,
2a: side wall, 2b: thin part,
3: knock hole, 3A: cable insertion hole,
4: Screw insertion hole,
5, 5A, 5B, 5C: Wiring box body,
5a: opening, 6: screw hole,
7: Cover mounting piece, 8: Screw,
9: Screw insertion hole,
10, 10A, 10B, 10C, 10D: cover body,
11: Screw insertion hole, 12: Wiring fixture mounting piece,
13: Adhesive 14, 14A: Cover tube,
15: Cover tube clamping piece, 16: Magnet,
17: Installation part, 18: Screw,
19: Electric cable, 20: Flexible tube,
21: Fireproof connector, 22: Wall board,
23: hole, 24: wiring device,
25: Spiral groove, 26: Locking piece,
27: clamping piece, 28: partition wall locking groove,
29: Partition wall 30, 30A: Partition wall body,
31: groove for bending and cutting, 32: locking piece,
33: Stopper piece, 34: Notch,
35: Elastic locking piece.

Claims (5)

A wiring box body in which one or both of a cable insertion hole or a cable insertion hole in which a cable insertion hole can be formed on the side wall is formed, and the wiring box body is attached to the upper opening of the wiring box body integrally or in a fixed state. A cover body having at least two or more attachment portions formed with screw insertion holes for attaching the wiring device, and screwed into the attachment portions respectively attached to at least two or more attachment portions of the cover body A wiring box comprising: a cover tube that covers a tip portion of a screw and prevents damage to a cable in the wiring box body. Attach the upper part of the cover tube, which is formed in at least two attachment parts of the cover body, to sandwich the upper part of the cover tube so as to communicate with the screw insertion hole, and to the upper part of the sandwiched part 2. A wiring box according to claim 1, wherein a cover tube formed with a piece is used. A clamping piece formed on each of at least two attachment portions of the cover body and sandwiching the upper portion of the cover tube with the upper portion expanded, and a contact portion between the upper portion of the cover tube and the attachment portion The wiring box according to claim 1, wherein the cover tube is attached to the attachment portion with an adhesive that adheres and fixes the wire. 2. The wiring box according to claim 1, wherein the cover tube is attached by a clamping piece formed on each of at least two mounting portions of the cover body and sandwiching the upper portion of the cover tube having an expanded upper portion. . The cover tubes attached to at least two attachment portions of the cover body are fixed with an adhesive, or a screw portion is formed on the bottom surface of the at least two attachment portions, and the upper portion of the cover tube is screwed to the screw portion. The wiring box according to claim 1, wherein the wiring box is fixed together.

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