JP4025603B2 - Box fixing bracket for wiring box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wiring box inter-column fixing bracket used for attaching a wiring box such as an outlet box to an inter-column.
[0002]
[Prior art]
Conventionally, an inter-column fixing bracket for wiring boxes such as outlet boxes is composed of an inter-column fixing portion fixed to the inter-column and an arm portion protruding horizontally from the inter-column fixing portion, and a slide hole is provided in the arm portion in the horizontal direction. The wiring box is fixed to the arm portion by inserting the bolt into the bolt insertion hole provided in the bottom wall of the wiring box and the slide hole of the arm portion and tightening the nut.
[0003]
Since the wiring bracket fixing bracket for wiring is provided with a slide hole in the arm portion in the horizontal direction, loosening the bolts and nuts that secure the wiring box to the arm portion makes the wiring box the slide hole of the arm portion. It is possible to adjust the mounting position by moving in the width direction of the stud.
[0004]
[Problems to be solved by the invention]
By the way, if the box fixing bracket for wiring box is fixed to the stud, depending on the construction site, there is not enough gap between the arm part protruding in the horizontal direction from the fixing part and the wall surface of the building on the back. In a state where the box fixing bracket for the box is fixed to the stud, there is a problem that it is difficult to perform the operation of inserting a tool or a hand into the gap between the arm portion and the back surface of the fixing bolt or nut and tightening.
[0005]
Therefore, the present invention provides a front surface of the wiring box without inserting a hand or a tool on the back side of the arm portion protruding in the horizontal direction from the stud fixing portion even when there is no gap with the wall surface of the building on the back side. It is an object of the present invention to provide a wiring box inter-column fixing bracket that can easily fix the wiring box to the arm portion from the side with a single screw.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention includes a spacer fixing portion fixed to a spacer and an arm protruding in a horizontal direction from the spacer fixing portion, and a slide hole is provided in the arm in the horizontal direction. In the wiring box fixing bracket for wiring box, a fixing plate is attached to the back of the arm portion so that it can be slid with respect to the arm portion by engaging claws, and this fixing plate is formed on the bottom wall of the wiring box An engaging projection inserted into one of the pair of mounting holes at the horizontal position through the slide hole of the arm part, and a screw from the other mounting hole of the wiring box through the slide hole of the arm part A screw fixing part is provided.
[0007]
The wiring box inter-column fixing bracket having the above structure can be used even when there is no sufficient gap between the back surface of the arm portion protruding in the horizontal direction from the inter-column fixing portion and the wall surface of the building with the inter-column fixing portion fixed to the inter-column. The fixing plate is attached to the back of the arm, and the engaging projection of this fixing plate protrudes to the front of the arm through the slide hole of the arm, so push the wiring box from the front of the arm. Put the engaging projection of the fixing plate into one mounting hole of the wiring box, and tighten the screw from the other mounting hole to the screw fixing part on the back of the arm part through the slide hole. The wiring box is fixed to the arm portion so as not to be rotatable.
[0008]
As described above, the fixing operation of the wiring box to the arm portion is performed so that the engaging protrusion of the fixing plate mounted on the back surface of the arm portion fits into one of the pair of mounting holes in the horizontal position of the wiring box. Therefore, it is only necessary to screw one fixing screw from the front side of the wiring box to the fixing plate of the wiring box attached to the back surface of the arm portion.
[0009]
Moreover, since the metal arm part is sandwiched between the synthetic resin wiring box and the fixing plate by forming the fixing plate to be mounted on the back surface of the arm part with synthetic resin, the wiring box and the stud The insulation between them becomes high.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a wiring box inter-column fixing bracket 1 according to the present invention will be described.
The wiring box 20 is formed of a synthetic resin and includes a rectangular bottom wall 21 and four side walls 22. On the bottom wall 21 and the side wall 22, four knockout holes 23 for inserting electric wires are formed on the bottom wall 21 and two on each side wall 22. In addition, a total of four mounting holes 24 are formed in the bottom wall 21 of the wiring box 20 on two orthogonal lines, that is, two each.
[0011]
A wiring box inter-column fixing bracket 1 according to the present invention includes an inter-column fixing portion 2 fixed to the inter-column 10 and an arm portion 3 protruding in a horizontal direction from the inter-column fixing portion 2.
[0012]
An appropriate structure can be selected for the stud fixing part 2 according to the type of the stud 10. For example, in the embodiment shown in FIG. 1 to FIG. 4, as the stud fixing part 2, outside the opening surface of the lightweight stud 10. The part 10a is sandwiched between the connecting plate 2a and the sandwiching plate 2b, and the connecting plate 2a and the sandwiching plate 2b are fixed with bolts 2c. Further, when attaching to the back surface of the lightweight stud 10, the connecting plate 2a is removed without using the connecting plate 2a and the bolt 2c, and the stud fixing portion 2 is placed at a predetermined position on the back of the lightweight stud 10 and sandwiched. It is also possible to screw and fix a tapping screw into a screw hole 2d provided in the plate 2b.
[0013]
The arm portion 3 is integrally formed so as to be bent at a right angle with respect to the sandwiching plate 2b of the stud fixing portion 2, and a slide hole 3a is formed in the horizontal direction.
[0014]
A fixing plate 4 is mounted on the back surface of the arm portion 3 so as to be slidable with respect to the arm portion 3. The fixing plate 4 is made of synthetic resin, and four engaging claws 4 a that grip the arm portion 3 are formed at both ends of the upper and lower sides of the fixing plate 4. As shown in FIG. 2, the four engaging claws 4 a are configured so that there is no gap between the wiring box 20 and the arm portion 3 in a state where the wiring box 20 is fixed to the arm portion 3. The bottom wall 21 is formed so as to be positioned in the recess of the knockout hole 23.
[0015]
On the front surface of the fixing plate 4, an engagement protrusion 4 b that is inserted into one of a pair of mounting holes 24 formed in the bottom wall 21 of the wiring box 20 through the slide hole 3 a of the arm portion 3. Is forming. Further, the fixing plate 4 is provided with a screw fixing portion 4c for fixing the screw from the other mounting hole 24 of the wiring box 20 through the slide hole 3a of the arm portion 3 along with the engaging protrusion 4b. . A small hole is formed in the screw fixing portion 4c so that the tapping screw 13 can be easily tightened.
[0016]
The wiring box inter-column fixing bracket 1 having the above structure is used in the following manner with the fixing plate 4 mounted on the back surface of the arm portion 3.
[0017]
First, the stud fixing part 2 is fixed to the stud 10 by turning the bolt 2c according to the installation height of the wiring box. Thereafter, the wiring box 20 is pressed from the front side of the arm portion 3 so that the engaging protrusion 4b of the fixing plate 4 fits into one mounting hole 24 of the wiring box 20. The tapping screw 13 is screwed into the screw fixing portion 4 c on the back surface of the arm portion 3 through the slide hole 3 a of the arm portion 3 from the other mounting hole 24. Since the wiring box 20 is slidable in the width direction along the slide hole 3a of the arm portion 3 before the tapping screw 13 is fastened and fixed, the wiring box 20 is positioned in the width direction. Then, as shown in FIG. 2, the tapping screw 13 is fastened and fixed.
[0018]
As shown in FIG. 2, the tapping screw 13 is positioned so as not to contact the slide hole 3 a of the arm portion 3 in a state where the tapping screw 13 is fastened and fixed. Therefore, by making the fixing plate 4 made of synthetic resin, even if there is an electrical contact with the tapping screw 13 in the wiring box 20, insulation is achieved by the fixing plate 4, so The accident that electricity flows into 10 can be prevented.
In addition, in FIG. 4, the code | symbol 11 has shown the wall surface of the building.
[0019]
【The invention's effect】
As described above, according to the wiring box inter-column fixing bracket according to the present invention, with the arm portion fixed to the inter-column, the wiring box is attached to the arm portion using a single screw. Since it can be performed from the front side of the box, workability is extremely good.
Further, in the wiring box inter-column fixing bracket according to the present invention, the fixing plate is made of synthetic resin and positioned so that the tapping screw does not contact the slide hole of the arm portion. Even if there is electrical contact therewith, there is an effect that insulation can be achieved by the fixing plate.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an example of use of a wiring box inter-column fixing bracket according to the present invention.
FIG. 2 is a front view showing a mounting state of the example of FIG.
3A is a partial cross-sectional view taken along the line AA in FIG. 2, and FIG. 3B is a partial cross-sectional view taken along the line BB in FIG. 2;
4 is a cross-sectional plan view showing the attachment state of FIG. 2. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wiring box inter-column fixing | fixed metal fitting 2 Inter-column fixing | fixed part 2a Connecting plate 2b Clamping plate 2c Bolt 2d Screw hole 3 Arm part 3a Slide hole 4 Fixing plate 4a Engagement nail | claw 4b Engagement protrusion 4c Screw fixing | fixed part 10 13 Tapping screw 20 Wiring box 21 Bottom wall 22 Side wall 23 Knockout hole 24 Mounting hole

Claims (2)

In the wiring box inter-column fixing bracket, which is composed of an inter-column fixing portion fixed to the inter-column and an arm portion protruding in a horizontal direction from the inter-column fixing portion. The fixing plate is slidably attached to the arm portion by gripping the arm portion with the engaging claw, and the fixing plate is attached to one of the pair of mounting holes in the horizontal position formed on the bottom wall of the wiring box. A wiring comprising: an engaging projection inserted through a slide hole of an arm portion; and a screw fixing portion fixed by a screw from the other mounting hole of the wiring box through the slide hole of the arm portion. Box fixing bracket for box. 2. A wiring box inter-column fixing bracket according to claim 1, wherein the fixing plate mounted on the rear surface of the arm portion is made of synthetic resin.

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