JPH019220Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a support rod attachment part formed integrally with a box, and particularly to a structure for easily and reliably attaching a box such as an outlet box or a switch box to a support rod.

BACKGROUND OF THE INVENTION In buildings such as double ceilings or partition walls of houses, electrical wiring boxes such as outlet boxes and switch boxes are often fixed to support rods. Conventionally, when fixing the box, a separate U-shaped metal fitting is fitted into the support rod, and then the metal fitting is attached to the box. However, this method has disadvantages such as requiring a separate metal fitting.

The present invention was devised in view of these circumstances, and its purpose is to simply and reliably attach a box to a support rod without requiring separate metal fittings.

The feature of the present invention is that the hook portion for hooking the support rod is made integrally with the outer wall of the box, and has a screw that presses the hook portion from the inside of the box toward the inner surface of the hook portion. With the support rod hooked on the hook like this,
Since the screw is fastened from inside the box and the tip of the screw presses the support rod toward the inner surface of the hook, the support rod can be easily and reliably attached to the outside wall of the box. .

To further explain the structure of the present invention, reference numeral 1 denotes a box such as an outlet box or a switch box for electrical wiring, which is integrally molded of, for example, resin. Reference numeral 2 designates a hook portion formed integrally with the outer wall of the box 1, and is hooked onto a support rod 3 as shown in FIG. The support rod 3 is shown in Figures 1 and 2.
In the case of the example shown in the figure, the same reinforcing bars as the reinforcing bars 8 that are the supports of the concrete wall are used, but the reinforcing bars are not limited to this, and may be simple round bars, square bars, or even hanging bolts. Numeral 7 is a screw that is fastened to the periphery of the hook part 2 from inside the box 1, and includes screws, tapping screws, bolts, etc. in addition to commonly used screws.

In the case of the examples shown in FIGS. 1 to 4, the hook portion 2 is constructed by protruding from the outer wall of the box 1 with hook-shaped protrusions 2a spaced apart by a predetermined length and oriented in opposite directions. There is. In the case of the example shown in FIGS. 1 to 4, the screw hole 4 is provided at the intermediate position between the protrusions 2a and 2a as shown in FIG. 1 Screw 7 from inside
, and screw this screw 7 into the screw hole 4 to fix it, thereby pressing the support rod 3 toward the inner surface of the hook part 2 with the screw tip 7a as shown in FIG.
Thus, the box 1 is attached to the support rod 3. In this example, there is a screw hole 4 between the protrusions 2a, but instead of this, a tapping screw may be used as the screw 7, and this tapping screw may be screwed directly into the outer wall of the box 1. In the case of this example in which the protrusions 2a serving as the hook portions 2 are provided protruding in opposite directions, the support rod 3 can be hooked more reliably. good.

In the example shown in FIGS. 5 and 6, the hook portion 2 is constructed by protruding ring-shaped projections 2a from the outer wall of the box 1 at a predetermined distance. In the case of this example, with the ring-shaped protrusion 2b as the hook part 2 fitted and hooked onto the support rod 3, the screw 7 is screwed into the outer wall of the box 1 from inside the box 1, thereby tightening the screw 7. Tip 7
The box 1 is attached to the support rod 3 by pressing the support rod 3 toward the inner surface of the hook portion 2 at step a.

In the case of the example shown in FIG. 7, the hook part 2 is constructed by protruding a hook-shaped projection 2c from the outer wall of the box 1, and screws a screw 7 directly under this projection 2c. The screw tip 7a is configured to press the support rod 3 against the inner surface of the hook portion 2.

By the way, by turning the screw, the amount of screw advance and retraction can be adjusted continuously and steplessly. Similarly, in the present invention, since the support rod 3 is pressed by the screw 7 fixed to the periphery of the hook portion 2, by turning the screw 7 appropriately, the amount of screw advance and retreat of the screw 7 can be continuously adjusted steplessly. Can be adjusted. Therefore, even if the diameter of the support rod 3 is somewhat large or small, by turning the screw 7, the support rod 3 can be moved to the tip 7 of the screw without being affected by the diameter.
a can be reliably pressed, and the support rod 3 can be reliably tightened. Also, by adjusting the turning of the screw 7, the support rod 3 can be tightened firmly by turning the screw 7 firmly, and by turning the screw 7 loosely, the support rod 3 can be tightened more loosely. The degree of tightening can be easily adjusted. As described above, in the present invention, the box 1 can be reliably attached to the support rod 3 with a very simple structure, such as just fixing the screw 7 on the periphery of the hook portion 2, and the tightening of the support rod 3 can be done easily. There is an advantage that the degree can be adjusted arbitrarily.

1, 2, and 6 show typical usage examples when the box 1 is attached to the support rod 3 using the structure according to the present invention. The box 1 is fixed using reinforcing bars 8 or auxiliary bars, which are the supports of the concrete wall provided between the temporary frames 12 and 13, as support rods.

By the way, in the past it was thought to attach the conduit itself to the reinforcing bar 8, but if the conduit is connected to the box 1 attached to the reinforcing bar 8 as in the present invention, the conduit can be made of resin or the like. Box 1 does not move even if a flexible conduit is used. That is, the present invention is particularly suitable for connecting a flexible conduit to the box 1.

Fig. 8 shows a different usage example. In this example, the suspension bolt for hanging the ceiling board 11 is used as the support rod 3 in the space C of the double ceiling of the house, and the box is attached to the support rod 3 in the space. 1 is fixed.
Note that 10 is a conduit. FIG. 9 shows a further different usage example. In this example, the box 1 is placed between the vertical pillars 14, 14 by installing the support rod 3 between the vertical pillars 14, 14 that constitute the room wall. Fixed.

[Brief explanation of the drawing]

Figures 1 to 4 are examples of the present invention, and Figures 1 and 2 are a perspective view and a side view of the box bridged through a support rod hooked to the hook, and Figure 3
The figure is an enlarged perspective view of the vicinity of the hook, and FIG. 4 is a longitudinal sectional side view of the same. 5 and 6 show different examples of the present invention; FIG. 5 is a sectional view of the vicinity of the hook, and FIG. 6 is a view corresponding to FIG. 1. FIG. 7 is a further different example of the present invention, and is a sectional view of the vicinity of the hook. 8th
The figure is a side view when the present invention is used in a space with a double ceiling, and FIG. 9 is a perspective view when the present invention is used between pillars forming a room wall. In the figure, 1 is the box, 2 is the hook, 7 is the screw,
3 indicates a support rod.

Claims (1)

[Scope of Claim for Utility Model Registration] (a) A hook part that is made integrally with the outer wall of the box and hooks the support rod in an erected state; (b) A hook part that is fixed from inside the box to the periphery of the hook part,
A structure of a support rod attachment part of a box, comprising a screw that presses the support rod toward the inner surface of the hook part at the tip of the screw.