JPH0441729Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a protective pipe joint for wiring, and more specifically, a joint that can be newly installed without cutting the cables etc. housed in the existing protective pipe for wiring. Regarding protective pipe joints for wiring.

[Conventional technology]

When wiring communication cables etc. underground, conventionally one wiring protective tube was used for one cable, but in recent years, as shown in Figure 10 A and B, the interior is lined with a partition wall A. Cable C is stored in wiring protection tube B that is divided into several compartments,
Wiring began to be done.

Incidentally, it often becomes necessary to subsequently provide a manhole in a conduit laid by the above-mentioned wiring protection tube or to connect a branch wiring.

However, no pipe joint has been developed that can be connected to such a wiring protection pipe having a partition wall inside to add a manhole or the like without cutting the cable.

[Problems with conventional technology]

As mentioned above, there is a need for the development of a pipe joint that can be connected to a protective pipe for wiring that has a partition wall inside, and that can also be used to add manholes, etc., without cutting the cable that has already been installed.

[Problems solved by invention]

In view of the above-mentioned problems, this idea was developed for wiring that can be quickly installed without cutting the cable at all when connecting a manhole or branch wiring to an existing wiring protection conduit that has a partition wall inside. It was created for the purpose of providing protective pipe joints.

[Technology to solve problems]

That is, the protective pipe joint for wiring of this invention has a socket for receiving one end of a protective pipe for wiring having an internal partition wall, and has one or more split parts in the axial direction, the other end of which is formed with an enlarged diameter. The plastic shell is provided with the same number of cable insertion holes as the inner partition sections of the wiring protective tube, and all of the insertion holes are separable so as to be releasable to the outside. It is characterized by comprising a closed cap body at the enlarged diameter end of the outer shell body, and a split sleeve that can be fitted and fixed into each insertion hole of the cap body and fitted around the outer circumference of the cable.

〔Example〕

Next, this invention will be explained using examples.

FIG. 1 is a perspective view of an embodiment of this invention, and FIG. 2 is an exploded perspective view of the embodiment.

The protective pipe joint G for wiring of this invention has a socket 1A for receiving one end _B1 of a protective pipe B for wiring having an internal partition wall A, and the other end 1B is formed to have an enlarged diameter. or 2 or more (the example shown is one)
_A plastic outer _shell 1 is provided with cable insertion holes 3 . A closed cap 4 of the enlarged diameter end 1B of the plastic outer shell 1, which can be divided by dividing lines 4A...4A so that all of the parts 3 can be opened to the outside Q, and each of the insertion holes 3 of this closed cap 4 ...3
The split sleeve 5...5 is fitted and fixed inside the cable C, and is fitted around the outer periphery of the cable C.

In the above, the plastic outer shell 1 has two parts 2 as shown in FIG. 3, and may have a two-part structure.
Furthermore, although not shown, it may be divided into three or more parts.

In addition, as shown in FIG. 2, the closed cap 4 is
As a configuration in which all the insertion holes 3...3 are opened to the outside, the central part of the insertion holes 3...3 is divided into a divided piece 4B.
In addition, in addition to having a structure in which a divided piece 4C is provided in one insertion hole 3, the closing cap 4 is made into two divided bodies 4D, 4D, and is combined with a central divided piece 4B, as shown in FIG. It may also be used as a configuration.

Further, the opening shape of each insertion hole 3...3 is made into an oval shape as shown in the figure, and the split sleeve 5 that fits therein has a seat 5A that fits into the oval hole as shown in FIG. , 5A are integrally formed, and the cable insertion hole 3' is provided at a position eccentric to the seats 5A, 5A, it is convenient because the eccentricity of the insertion position of the cable C can be adjusted by rotating the sleeve. be.

Although the above-mentioned embodiment shows the case of a partitioned pipe whose interior is partitioned into four sections, the same method can be applied even if the pipe is partitioned into two sections as shown in FIG.

The embodiment shown in Fig. 9 has the same configuration as the above embodiment except that the number of cables C is 2, so the same numbers used in Figs. 1 to 4 are shown in the figure, and the details are Further explanation will be omitted.

[Effect]

Next, the operation of the protective pipe joint 1 for wiring of this invention will be explained.

When adding a manhole etc. to the existing wiring protection tube B, cut only the external wiring protection tube B to a specified length without cutting the cable C stored inside, as shown in Figure 5. Remove.

Since the plastic outer shell 1 has a split 2 inserted therein, the outer shell 1 can be attached onto the cable C by pushing out the split 2 using the elasticity of the plastic as shown in Fig. 6. is completed, divided by 2
At the same time, the socket 1A is connected to the wiring protective tube B, and the installation is completed.

Furthermore, if the closing cap 4 is divided into divided pieces 4B, 4C, etc. as shown in FIG. 7, it is possible to fit the cable C into each insertion hole 3 from the outside, and after fitting, each divided piece 4B , 4C, etc., are fitted and fixed in place.

The split sleeves 5...5 can be fitted to cover the outer surface of each cable C as shown in FIG. 3 and secure it.

In this case, if the insertion holes 3...3 are oval holes and the split sleeves 5...5 are provided with oval seats to fit them, the area around the axis of the split sleeves 5...5
A 180° rotation allows adjustment of the separation distance between each cable.

After attaching each divided member, if they are fixed with adhesive or a fastening member, assembly of the wiring protection pipe joint 1 is completed.

Thereafter, the protective pipe joint 1 for wiring is fixed to a peripheral wall of a manhole or the like.

The two-section partitioned pipe shown in FIG. 9 is also installed in the same manner as above.

〔effect〕

As explained above, when a manhole etc. is subsequently added to the existing protective pipe B for wiring, this invention allows the joint to be connected without cutting the cable, making the construction much easier than before. It becomes easier.

[Brief description of the drawings]

Fig. 1 is a perspective view of an embodiment of this invention, Fig. 2 is an exploded perspective view of the embodiment, Fig. 3 is an end view of another embodiment, and Fig. 4 is a split front view of yet another embodiment. FIG. 5 is a perspective view of main parts of still another embodiment, and FIG.
FIG. 8 is an explanatory diagram of the operation of the embodiment, FIG. 9 is an explanatory diagram of the conventional example, and FIGS. 10A and 10B are perspective views of the conventional example.

Claims (1)

[Scope of utility model registration request] a plastic outer shell having one or more splits in the axial direction and having a socket for receiving one end of a wiring protective tube having an internal partition wall and having an enlarged diameter at the other end; Closure of the enlarged diameter end of the plastic outer shell, which is provided with the same number of cable insertion holes as the internal partition sections of the wiring protection tube, and is separable so that all of the insertion holes can be released to the outside. A protective pipe joint for wiring comprising a cap body and a split sleeve that can be fitted and fixed into each insertion hole of the cap body and fitted around the outer circumference of a cable.