JPH041661Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a molded branch connection for a cable.

[Technical background of the invention and its problems] FIG. 10 shows a molded branch connection at the terminal of a conventional three-core cable.

In the same figure, main cable 1 and branch cable 2
The conductor is connected to each core through a C-shaped sleeve 3, and after being insulated with an insulating tape 4, a soft vinyl chloride resin mixture is molded through a mold to form an integral vinyl mold body 5. There is.

Therefore, the end portion 1a of the main cable protruding outward from the vinyl mold body 5 is provided with a metal mold to prevent the main cable from moving when a mold is attached during vinyl molding and a vinyl chloride resin mixture is press-fitted into the mold. This is necessary to extend the mold to the outside and hold it in place. Therefore, the end portion 1a of the main cable is unnecessary after the vinyl mold body 5 is formed, but in order to prevent water from seeping in from this end portion 1a, a vinyl cap 6 is fitted and it is held down with an insulating tape 7. It has been treated to make it waterproof.

However, the conventional molded branch connection described above not only requires time and effort to waterproof the end of the main cable, but also has the disadvantage that an extra main cable is required for molding.

[Purpose of the invention] The present invention was made in view of the above circumstances, and its purpose is to provide a cable branch connection part that does not require an extra main cable and can simplify the branch connection work. .

[Summary of the invention] In other words, the cable branch connection part of the invention is as follows:
The conductors of the main cable terminal and the branch cable terminal are aligned and connected to form a conductor connection part, and an insulating spacer extending outward from the molded coating is connected to this conductor connection part, and the main cable terminal is connected to the main cable terminal. By embedding it in the mold coating, the insulating spacer can hold the main cable end during molding.

[Embodiments of the invention] Hereinafter, embodiments of the invention will be described based on the drawings. 1 to 3 are diagrams showing an embodiment of the present invention. In these figures, reference numeral 10 is a main cable, and 11 is a branch cable, each of which has three cores. The main cable 10 and the branch cable 11 are conductor-connected to each core via a C-shaped sleeve 12, and the excess length of each core is cut off. The conductor connection portions 13a, 13b, and 13c of each core are positioned offset in the length direction, and further electrically separated by a Y-shaped insulating spacer 14.

An insulating spacer 15 having a circular cross section is connected to the outermost conductor connection portion 13a. The conductor connection portions 13a, 13b, 13c of each core of the main cable 10 and branch cable 11 and the insulating spacers 14, 15 are covered with adhesive vinyl tape 16.
The vinyl molded body 17 is wrapped and fixed by a mold, and is covered with a vinyl molded body 17 formed by attaching a mold (not shown) thereon. The insulating spacer 15 with a circular cross section is connected to the main cable 1 when the mold is installed.
0 and branch cable 11 so that they do not move. After molding,
The outwardly extending portion 15a of the molded body 17 is cut off to match the end surface of the molded body 17, as shown in FIG.

The terminal ends of the main cable 10 and the branch cable 11 are each embedded in a molded coating in a liquid-tight manner.

One insulating spacer 14 is made of EP rubber, and the other insulating spacer 15 is made of polyvinyl chloride, which is the same material, in consideration of adhesion to the vinyl mold body 17. 5 to 9 are diagrams showing other embodiments of the present invention, and parts common to those in FIG. 1 are given the same reference numerals.
This embodiment differs from the embodiment shown in FIG. 1 only in the structure of the insulating spacer. That is, main cable 1
0 and the conductor connection part 1 of each core of the branch cable 11
An insulating spacer 14 for insulating and isolating 3a, 13b, and 13c and an insulating spacer 15 having a circular cross section and extending outward from the molded body 17 are integrally constructed. In this case, during molding, the force for retaining the end of the main cable 10 outside the mold is large, and more stable molding can be performed. Note that the other configurations are the same as those of the embodiment shown in FIG. 1, so explanations thereof will be omitted.

[Effects of the invention] As described above, the cable branch connection part of the invention connects the conductor connection part with an insulating spacer that extends outside the molded covering, and the main cable terminal and the branch cable terminal are connected inside the molded covering. Since the insulating spacer is embedded in the main cable end portion during molding, the insulating spacer can be used to hold down the main cable end portion, and there is no need to lengthen the cable end portion. Therefore, the entire branch connection can be made compact. Furthermore, since waterproofing of the cable terminals can be omitted, branch connection work can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view showing an embodiment of the cable branch connection part according to the present invention, and FIG.
FIG. 3 is a cross-sectional view taken along the line of FIG. 1, FIG. 4 is a front view showing a part of the same embodiment, and FIG. 5 shows another embodiment of the present invention. 6 is a cross-sectional view taken along the line of FIG. 5, FIG. 7 is a front view showing the main parts of the embodiment, and FIG. 8 is a cross-sectional view taken along the line of FIG. FIG. 9 is a cross-sectional view taken along the line - in FIG. 7, and FIG. 10 is a vertical cross-sectional view showing a branch connection portion of a conventional cable. 10... Main cable, 11... Branch cable,
13a, 13b, 13c...conductor connection portion, 14,
15...Insulating spacer, 17...Mold body.

Claims (1)

[Scope of utility model registration request] The conductors of the main cable end and the branch cable end are connected at the cable branch connection part, which is formed by attaching a mold to the outer periphery of the conductor connection part between the main cable and the branch cable and its vicinity, and applying a mold coating. said conductor connection portion is formed in said conductor connection portion, said conductor connection portion is connected to an insulating spacer extending outward from the molded sheath, and said main cable terminal is embedded within the molded sheath. Branch connection.