JPH055795Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to an outlet box that is embedded and attached to a concrete wall of a structure.

[Background technology]

Outlet boxes for installing wiring devices are often installed by being buried in the walls of structures with one side open. When the wall to be buried is concrete, the conventional outlet box is, for example, as shown in Fig. 4,
It was designed to be attached and fixed to this as a support. This outlet box 21 has a structure in which a plurality of clamps 24 are integrally provided on the end face thereof. The outlet box 21 connects the reinforcing bars 22 that are stretched vertically and horizontally inside the concrete via the clamps 24.
It is fixed to . This fixation is done by clamp 2
Insert the reinforcing bar 2 into the screw hole 23 provided on the end face of 4.
This is done by inserting the screw 25 while holding down the screw 25. In this case, outlet box 2
1 is placed so that its opening surface is flush with the concrete surface. Various wiring devices can be attached to the opening surface.
After the outlet box 21 is fixed to the reinforcing bars 22, a temporary frame (not shown) for pouring concrete is installed so as to be in close contact with the opening surface of the outlet box 21. In this case, since the thickness of concrete varies depending on the structure or location, the distance between the temporary frame and the reinforcing bars is often not constant after the reinforcing bars are assembled. In such cases, the outlet box 21 shown in Figure 4 does not have a means to delicately adjust the attachment position to the reinforcing bars, so if the opening surface cannot be brought into close contact with the temporary frame. occurred. If there was a gap between the opening surface of the outlet box and the temporary frame, there was a problem that when pouring concrete into the temporary frame, slurry-like concrete would get into the outlet box, making it difficult to install wiring equipment. .

[Purpose of invention]

In view of the above points, this invention allows the installation position to be adjusted when attaching the outlet box to the support, which is a structural member of the structure, and also allows it to be attached to the temporary frame used for pouring concrete. To provide an outlet box which allows the opening surface of the outlet box to be brought into close contact with the surface of the outlet box.

[Disclosure of invention]

In order to achieve the above object, this invention includes a box made of a synthetic resin material, one surface of which is provided with an opening for attaching a wiring device, and the box adjacent to this opening surface. In an outlet box that is provided with a clamp on the outside of the side surface for fixing the box to a support that is a structural member of the building, the clamp is separate from the box, and the clamp is attached to the box. The slideable clamps are arranged on opposite sides of the outside of the box, and each clamp has a The outlet box is characterized by comprising a recess into which the clamp is fitted so as to be movable along the outlet, and a fastening means for fixing the clamp to the support in the recess.

This will be explained in detail below with reference to the drawings showing one embodiment thereof.

1 and 3 show an outlet box (hereinafter simply referred to as "box") 1 according to this invention.

This box 1 consists of a box body 1a having an opening on one side (upper surface) for attaching a wiring device (not shown) such as a switch, and a clamp 4 for attaching the box 1 to a support 7. It's summery. This box body 1a is provided with knockouts 2 of different shapes on the side surface adjacent to the opening surface and on the bottom surface 10 facing the opening surface, and guide portions 3 having hook-shaped portions at each corner of the outer side surface.
It is equipped with The guide part 3 does not necessarily need to be provided at the corner of the box 1a, but if it is done this way, as will be described later, after the clamp 4 is attached to the guide part 3 and the box 1 is fixed to the reinforcing bar 7, it can be placed inside the temporary frame. This is preferable because it makes it difficult for Box 1 to move when pouring concrete into the concrete. Guide section 3
has a surface for guiding the clamp 4 attached thereto, and has a stopper 11 at its upper end. The guide surface has a rack-shaped portion 3a in which recesses are repeatedly formed at regular intervals in the depth direction of the box 1a. The stopper 11 is provided to prevent the clamp 4 from jumping out onto the opening surface of the box body 1a when it is attached to the guide portion 3. Rack-shaped part 3 of guide part 3
As will be described later, a is adapted to guide the clamp 4 in the depth direction of the box body 1a by slidingly contacting the inner end surface of the clamp 4.

The clamp 4 has a generally E-shape as a whole, as shown in FIGS. 2a and 2b. An arcuate recess 5 for fixing the box 1 to the support 7 on one end surface thereof.
are provided, and a number of protrusions 6 are provided on the other end surface to fit into the recesses of the rack-shaped portions 3a of the guide portions 3 provided at the corners of the box body 1a. The number of recesses 5 is not particularly limited, and may be one or more. On the other hand, in the case of a concrete wall of a building, for example, the support body 7 may be a reinforcing bar stretched inside the wall. In order to attach the box 1 to the reinforcing bar 7 serving as the support, the recess 5 of the clamp 4 is first fitted into the reinforcing bar 7, as shown in FIGS. 1a and 1b. At this time, the fitting position of the recess 5 relative to the reinforcing bar 7 may be adjusted along the reinforcing bar 7 so that the clamp 4 is placed at a position corresponding to each corner of the box 1a. Next, a tapping screw 9 serving as a fastener is inserted into a hole 8 bored in an overhanging piece 4a provided at the center of one end surface of the clamp 4. At this time, the back surface of this screw head presses down on the reinforcing bar 7, so that the box 1 can be fixed to the reinforcing bar 7. It goes without saying that the fastener is not limited to a tapping screw.

A large number of the protrusions 6 are formed on the other end surface of the clamp 4, and the apex angle L of each protrusion 6 is 90°. It is adapted to fit into a recess in the rack-shaped portion 3a. In order to fix the clamp 4 to the box body 1a, as described above, the convex part 6 on the end face of the clamp 4 and the concave part of the rack-shaped part 3a in the guide part 3 are fitted together, and then the tapping which is a fastening device is used. The screws 13 are inserted through the long holes 12 formed on the side surface of the clamp 4 and the holes 14 provided on the side surface of the box body 1a. FIG. 1a shows the mounting position of the clamp 4 relative to the box body 1a changed on the left and right sides thereof. The fitting position between the clamp 4 and the box body 1a can be changed by loosening the tapping screws 9 and 13. Figure 1b shows the tapping screw 13.
Represents a somewhat relaxed state. The hole 14 provided on the side surface of the box 1a is formed in an overhang 15 provided at the center of the side surface.

As described above, since the elongated hole 12 is formed in the side surface of the clamp 4, the clamp 4 can be easily slid and attached to the guide portion 3 provided on the outer side surface of the box body. This means that the box body 1a can be slid relatively in the depth direction, so even if the distance between the assembled reinforcing bars 7 and the temporary frame for pouring concrete varies depending on the location, the box body 1a can be slid relatively in the depth direction. This allows the opening surface of the body 1a to be securely brought into close contact with the temporary frame.

Note that the shape of the convex portion 6 on the end surface of the clamp 4 is not necessarily limited to having an apex angle, and may be semicircular or wavy. As for the number, as shown in the figure, there is no need to provide a large number of them, and it may be just one. In short, this convex portion 6 is
It is sufficient if it can fit into the recess of the rack-shaped portion 3a of the guide portion 3 of the box. Furthermore, the convex portion may be provided on the rack-shaped portion 3a of the guide portion 3, and the recessed portion may be provided on the end face of the clamp 4. If the structure is such that the uneven surfaces fit together, the contact area between the box body 1a and the clamp 4 mounting portion will increase, and a stronger fit will be realized, which will improve the connection between the two. This is preferable since rattling is less likely to occur between the two. However, the box body 1a
When attaching the clamp 4 to the guide part 3 of the box, it is not limited to the combination of concave and convex shapes repeatedly formed at equal intervals as shown above. A protrusion that fits into the clamp may be provided on the end surface of the clamp. The point is that both should be slidably attached.

[Effect of idea]

Since the box according to this invention has the above-mentioned structure, for example, when it is attached to a reinforcing bar inside a concrete wall, its mounting position can be adjusted, and it can be used as a temporary frame for pouring concrete. The opening surface of the box can be reliably brought into close contact with the surface of the object. As a result, when pouring concrete, it becomes possible to sufficiently prevent slurry concrete from entering the box, and the work of attaching wiring devices to the opening surface of the box is not hindered.

In particular, clamps that can slide in the depth direction of the box are arranged on both opposing sides of the outside of the box, such as the four corners of the box, so that the It can be installed and fixed reliably and stably. That is, if only one side of the box is fixed to the support, there is a possibility that the box may move on the opposite side that is not fixed. Even if the opening surface of the box body is placed in close contact with the temporary frame for concrete pouring, when concrete pouring pressure is applied, there is a risk that concrete will enter from the opening surface of the box body on the unfixed sides. . Therefore, as in this invention, it is absolutely necessary to fix not only one side of the box but also both opposing sides to a support via a clamp.

In this way, when attaching a box to a support using a plurality of clamps, it is necessary to adjust the attachment positions of the clamps with respect to the support such as reinforcing bars. That is, the mounting intervals and positions of supports such as reinforcing bars may be slightly shifted. Therefore, if the mounting position of the clamp with respect to the support is not appropriate, the box may not be able to be mounted in close contact with the temporary frame for concrete pouring even if the clamp is adjusted to slide in the depth direction.

In this invention, the clamp is equipped with a recess that is fitted into the clamp so that it can move along the support, and a fastening means that fixes the clamp to the support in this recess, making it easy to attach multiple clamps to the support. By shifting the fitting position of the recess with respect to the support, the positions of multiple clamps can be adjusted independently, and all clamps can be installed in the most appropriate position according to the arrangement of the support. .

In other words, in this invention, by combining the position adjustment means of adjusting the recess along the support, that is, the mounting position of the clamp, and adjusting the slide of the clamp in the depth direction of the box, it is possible to install it embedded in the concrete structure. It is necessary to securely and firmly attach the outlet box to be placed in the temporary frame with the opening surface of the box in tight contact with the temporary frame so that there are no gaps even when concrete is placed. It can be done.

[Brief explanation of the drawing]

Fig. 1a is a front view of the box according to this invention (view from arrow E in Fig. 3a), Fig. 1b is D in Fig. 3a
2A is a front view of the clamp provided in the box according to this invention, FIG. 2B is a right side view of the clamp shown in FIG. Figure b is a front view of the box in figure a, Figure c is a cutaway plan view of the box in figure a.
-A sectional view and FIG. 4 are perspective views showing the conventional box in use. 1... Outlet box, 1a... Box body,
4... Clamp, 7... Support (reinforcing bar).

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A box body made of a synthetic resin material, with an opening on one side for attaching a wiring device, and a box body adjacent to this opening surface. In an outlet box, the outer side surface is provided with a clamp for fixing the box to a support that is a structural member of the structure, and the clamp is separate from the box and is attached to the box. The slideable clamps are arranged on opposite sides of the outside of the box, and each clamp has a support attached to the support. 1. An outlet box characterized by comprising a recess into which the clamp is fitted so as to be movable along the recess, and a fastening means for fixing the clamp to the support in the recess. (2) A guide portion is provided at the corner of the outer side surface of the box, and has a surface that guides the clamp in the depth direction of the box by slidingly contacting the inner end surface of the clamp, and the guide surface and One of the inner end surfaces of the clamp is provided with recesses that are repeatedly formed at equal intervals, and the other is provided with protrusions that fit into these recesses. The first claim for utility model registration that is positioned
Outlet boxes as described in section.