JP2585939Y2 - Cable trough joints - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a concrete cable trough used for underground wiring and the like, and a cable trough joint used for connecting a synthetic resin trough.

[0002]

2. Description of the Related Art As cable troughs for underground wiring and the like include those made of concrete and those made of synthetic resin, there are cases where it is desired to connect a synthetic resin trough to an existing concrete cable trough. For this purpose, a connection member called a joint has conventionally been used.
By the way, the synthetic resin trough has a convex connecting portion at one end and a concave connecting portion at the other end, and has different shapes at both ends. Since the shape of the joint opening corresponds to the shape of one end of the synthetic resin trough, conventionally one end of the synthetic resin trough must always be inserted into the joint and used. There was the inconvenience of having to do it. Also, in the case where it is desired to cut the synthetic resin trough at the center portion due to the layout, it is impossible to connect the cut portion to the concrete cable trough with the conventional joint.

[0003]

SUMMARY OF THE INVENTION The present invention has been completed to solve the above-mentioned conventional problems and to provide a cable trough joint capable of freely connecting a synthetic resin trough to a concrete cable trough. It was done.

[0004]

SUMMARY OF THE INVENTION The joint of the cable trough according to the present invention, which has been made to solve the above problems, is as follows.
The end portion of the joint body is expanded in three steps, and a first connection portion having a width corresponding to the trunk portion of the synthetic resin trough and a second connection portion having a width corresponding to the convex connection portion of the synthetic resin trough. And a third connecting portion having a width corresponding to the concave connecting portion of the synthetic resin trough.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the illustrated embodiments. In FIG. 1, reference numeral 1 denotes a concrete or synthetic resin joint body having substantially the same size as a concrete cable trough, and a connecting portion 2 for connection to the concrete cable trough is formed at one end thereof. The other end is sequentially expanded so as to be able to receive a synthetic resin trough, and a first connection portion 3, a second connection portion 4, and a third connection portion 5 are formed in this order from the inside. ing.

As shown in FIGS. 2 and 3, the first connecting portion 3
Corresponds to the width of the trunk 7 of the synthetic resin trough 6,
The cut body 7 can be received as it is. As shown in FIGS. 4 and 5, the second connection portion 4 has a width corresponding to the convex connection portion 8 formed at one end of the synthetic resin trough 6. Since the convex connecting portion 8 has a projection 9 in the center of the lower surface thereof, a concave portion 10 for receiving the projection 9 is also formed in the center of the lower surface of the second connecting portion 4. As shown in FIGS. 6 and 7, the third connection portion 5 has a width corresponding to the concave connection portion 11 formed at the other end of the synthetic resin trough 6. The concave connecting portion 11 has the widest width because it is for receiving the convex connecting portion 8 of the adjacent synthetic resin trough 6.
Therefore, the third connection part 5 is expanded most greatly.

[0007]

The thus constructed joint of the cable trough of the present invention is used for a connection portion between a concrete cable trough and a synthetic resin trough 6, and the connection portion 2 of the joint body 1 is connected to the concrete cable trough. And a synthetic resin trough 6 is connected using the opposite end. At this time, when the convex connecting portion 8 of the synthetic resin trough 6 comes to the joint side, the connection may be made using the second connecting portion 4 as shown in FIGS. When the concave connecting portion 11 of the resin trough 6 comes to the joint side, as shown in FIGS.
The connection may be made using the third connection unit 5. As described above, when it is desired to cut and connect the synthetic resin trough 6 from the middle of the synthetic resin trough 6 for convenience of layout, not at either end of the synthetic resin trough 6, as shown in FIGS. The connection may be made using the first connection unit 3.

[0008]

As described above, if the joint of the cable trough of the present invention is used, the concrete cable trough has a convex connecting portion 8 side of the synthetic resin trough 6.
Any part of the concave connecting part 11 side and the cut body part 7 can be freely connected, and the man-hour for cable laying work can be greatly reduced. Therefore, the present invention is a cable trough joint that solves the conventional problems,
Its practical value is extremely large.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a state where the trough is connected to a trunk of a synthetic resin trough using a first connection part.

FIG. 3 is a sectional view of FIG. 2;

FIG. 4 is a perspective view showing a state where the protruding connection portion of the synthetic resin trough is connected using the second connection portion.

FIG. 5 is a sectional view of FIG. 4;

FIG. 6 is a perspective view showing a state in which a third connection portion is connected to a concave connection portion of a synthetic resin trough.

FIG. 7 is a sectional view of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Joint main body 3 1st connection part 4 2nd connection part 5 3rd connection part 6 Synthetic resin trough 7 Body 8 Convex connection 11 Concave connection

Claims (1)

(57) [Scope of request for utility model registration] 1. An end of a joint body is expanded in three steps,
A first connecting portion having a width corresponding to the body portion of the synthetic resin trough, and a second connecting portion having a width corresponding to the convex connecting portion of the synthetic resin trough.
And a third connecting portion having a width corresponding to the concave connecting portion of the synthetic resin trough.