JPS5827737B2 - Electrical wiring box cable connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a cable connection device for an electrical wiring box that inserts and fixes electric wires into the electrical wiring box in a method of directly burying cables in concrete IJ-1-, for example, in indoor wiring of concrete buildings. Regarding.

Conventionally, indoor wiring that looks like concrete milk is made of metal pipes,
Alternatively, hard vinyl pipes have been buried in concrete and wiring has been routed inside.

However, in order to cope with the recent sharp increase in labor wages and price increases in the construction industry, it has been desired to save labor and materials in the electric T1 as well.

Recently, however, it has become common practice to bury cables directly in concrete.

In this case, when connecting the cable to the electrical wiring box, there is a risk that concrete milk may enter the interior of the electrical wiring box through the wire passage hole into the knocker 1 of the electrical wiring box.

In order to prevent the intrusion of concrete milk, a complicated device is required at the connection part, which has the drawback of requiring a lot of trouble.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a cable connection device for an electrical wiring box that can easily prevent concrete milk from entering the electrical wiring box using a simple device. purpose.

Embodiments of the present invention will be described in detail below with reference to the drawings.

That is, as shown in FIG. 1 a+b, the connector device has a connector tube body made of, for example, hard plastic, inserted into the concave fitting portion 2 of a connector cover 1 made of a flexible material such as rubber or plastic. It is constructed by fitting the convex fitting portions 4 of 3 into each other.

As shown in FIG. 2 a+b, the connector cover 1 has a groove-shaped gate-like fitting part 2 formed along the inner wall of the substantially central part of the cylindrical instep, and a single force of the concave fitting part 2 is applied to the fitting part 2. A cable enveloping part 6 having a wire passage hole 5 is formed integrally with the cable enveloping part 6 protruding into a gradually tapered cylindrical shape on the side, and a skirt-like enveloping part 7 is provided on the other force side of the recessed fitting part 2. is formed integrally with a protrusion.

Moreover, the connection fitting cylinder 3 is shown in FIGS. 3a, I), and C.
As shown in the figure, it is formed into a cylindrical shape with a wire passage hole, and tongue-like protrusions 8 and 9 are provided at two points on the outward side of the end to be inserted into the knockout hole of the electrical wiring box. It is formed by gradually increasing the protrusion length.

Around the protrusions 8 and 9 are U-shaped sulins l-10 and 1.
1 is formed.

A convex fitting portion 4 is integrally formed on the outer surface of the end where the projections 8 and 9 are formed and the other end on the reaction side along the circumferential surface.

That is, as shown in FIG. 1a, 1), after fitting the convex fitting part 4 of the connector sleeve 3 into the concave fitting part 2 of the connector cover 1, As shown in FIGS. 4a and 4b, the cable wrapping part 6 having the wire passage hole 5 is turned over and folded into the recessed fitting part 2 and the skirt-like covering part 7, and then,
As shown in FIG. 5a + 1), after the cable 12 is passed through the wire passage hole 5 of the cable containing part 6, the end of the connector cylinder 3 is inserted into the knock alarm of the electrical wiring box 13. 1. Insert the tongue-shaped protrusions 8, 9 into the holes by pressing them and then press-fitting them.

After this insertion, the tongue-shaped protrusions 8 and 9 protrude to their original positions and serve as a collar to prevent removal, and they also fit tightly against the outer wall of the skirt-like covering part 7 or around the knockout hole of the electrical wiring box 13. do.

In this case, the cable containing part 6 is turned over into the wire passage hole of the connecting body 3 that is provided so as to pass through the knockout hole.
or inserted.

Thereafter, as shown in FIG.
As shown in FIGS. d+e, the cable 12 can be protruded and accommodated in the wire passage hole 5.

Thereafter, the cable 12 is fixed by tightening the tip of the protruding cable wrapping part 6 with, for example, tape.

In this case, by adjusting the amount of bowing of the cable 12, the amount of the cable 12 inside the electrical wiring box 13 can be adjusted.

As shown in Fig. 5d, leave a folded part inside out at one end of the protruding cable wrapping part 6, and then tighten the tip of the doubled cable wrapping part 6 with tape or the like. It's okay.

Note that it is not necessary to tighten the tip end of the cable containing portion 6 with tape or the like after the cable is wired.

In addition, after inserting and attaching the connection fitting cylinder 3 fitted to the connection cover 1 into the hole in the knocker 1 of the electrical wiring box, the cable is routed through the enclosing part 6 having the wire passage hole 5. Good too.

Note that the connector cylindrical body is not limited to the configuration of the above embodiment, and may have a convex fitting portion formed on the outer surface of the end, into which the connector cover is inserted and locked into the knockout hole of the electrical wiring box. That's good.

As described above, according to the present invention, the connector cylindrical body fitted with the connector cover is inserted into the knockout hole of the electrical wiring box, and the cable is inserted into the inclusion part having the wire passage hole of the connector cover. The cable can be attached to the electrical wiring box by simply inserting it, making cable installation extremely easy.

Moreover, a hole is inserted into the inclusion part of the connector cover that has the wire passage hole.
Since the pull is tightly wrapped and the skirt-like covering of the connector covering is in close contact with the outer wall of the electrical wiring box around the knocker 1 to hole, the conch IJ-1-milk is tightly wrapped inside the electrical wiring box. can be prevented from invading.

Furthermore, by folding back the packaging part with the wire passage hole of the connector cover inward and passing the cable through it,
The amount of cable inserted into the electrical wiring box can be easily adjusted.

In addition, the cable enclosing part is inserted into the electrical wiring box with the cable turned upside down, and then the cable is pulled out and the cable enclosing part is pulled out of the electrical wiring box, so there is no cable encasing part inside the box. Since there is no residue left and there are no obstructions, it can be used widely and any wiring devices can be easily attached.Furthermore, the wrapping part is flexible, so it is easy to fit.
There are advantages such as the round diameter of the T-pull and the fact that there is no need to make a special one for the flat type, so it can be used for both purposes.

In this case, if it is not necessary, the cable may be connected while being inserted in the box in the force direction.

[Brief explanation of drawings]

Figures 1a and 1] are front and side views showing one embodiment of the present invention, and Figures 2a and b are connectors according to the present invention. FIG. 3a is a side view and a sectional view showing one example of a covering. b r c is a side view, a front view, and a top view showing an example of the connector cylindrical body according to the present invention, and Fig. 4 a and b are a side view and a front view showing an example of use of the connector cover according to the present invention. , Figure 5a
"'-e is a cross-sectional view showing an example of use of one embodiment of the present invention. 1... Connector cover, 2... Concave fitting portion, 3... ... Connector cylinder, 4 ... Convex fitting part, 5 ... Wiring hole, 6 ... Cable wrapping part, γ ...... Skirt-like covering part, 8.9...
...Protrusion, 12...Cable, 13...
...Electrical wiring box.

Claims (1)

[Claims] 1. A connector cylinder which is inserted and locked into a knockout hole of an electrical wiring box, has a convex fitting portion formed on the outer surface of its end, and is provided with a wire passage hole passing through the knockout hole; A concave fitting part into which the shaped fitting part is fitted is formed, and a cable containing part is formed in the body and has a wire passage hole that protrudes freely on one side of the concave fitting part and can be turned over. a connector covering body made of a flexible material integrally formed with a skirt-like covering part that protrudes toward the other force side of the fitting part and has an end abutted against the wall surface of the box; 1. A cable connection device for an electrical wiring box, characterized in that an inverted cable containing part is inserted into a wire passage hole of a concrete cylindrical body, and a cable is passed through the wire passage hole of the cable containing part.