JPS6025764B2 - Terminal processing method for power/optical fiber composite cable - Google Patents

Description

Detailed Description of the Invention The present invention relates to a power/optical fiber composite cable (hereinafter referred to as This relates to a terminal processing method for composite cables (simply referred to as composite cables).

The terminal treatment for composite cables is usually as shown in Figure 1.
This is done in the same way as conventional power cable terminations.

That is, the power cable 3 and the optical fiber cable 4 are taken out from the terminal of the composite cable 1 via the branch pipe 2, the power cable 3 is terminal-treated, and the optical fiber cable 4 is connected to an appropriate device 5. In this case, the length from which the optical fiber cable 4 can be taken out is the sum of the length from the branch pipe 2 to the terminal portion 6 of the power cable 3 and the extra length of the composite cable 1. Considering economic efficiency, it is desirable that the laying length of the composite cable 1 be as short as possible, and it is usually less than 2 to 3 skins. Therefore, the length that the optical fiber cable 4 can be taken out is about 4 to 5 inches at most, and if the device 5 to be connected is further away than this, it is necessary to connect the cable 4 via the connection part 7. However, the position of the above-mentioned connection part 7 is limited by the above-mentioned extra length of installation, and the position thereof is not necessarily suitable for installation of the connection part 7, for example, it is inconvenient for assembly work or maintenance work. It can be a strange place.

Especially when the power cable terminal stands up inside the cubicle, it is difficult to route the optical fiber inside the cubicle with a sufficient bending radius, and even if it is possible to assemble and maintain the power cable terminal, This causes inconvenience to the work and may even damage the optical fiber cable. The object of the present invention is to provide a method for processing the terminals of a composite cable that solves the above-mentioned problems.

Embodiments of the present invention will be described below with reference to FIGS. 2 to 4.

That is, at the terminal of the composite cable 1, the power cable 3 is taken out through the branch pipe 2 as before, but the optical fiber cable 4 is cut and removed without being taken out from the terminal, and the required distance 1 from the terminal of the composite cable 1 to its base end is The sheath of the composite cable 1 is peeled off at a position close to the center, the optical fiber cable 4 is cut at the peeled part 8, the cut end 4a on the proximal end side is taken out, and it is spliced with the connecting part 7 or without splicing. Connect directly to device 5.

The above-mentioned distance 1 is determined as appropriate depending on the installation location so that the connection portion 7 can be located at a position where it does not interfere with assembly, maintenance work, etc.

Further, the cut length of the peeling portion 8 is set to be long enough to connect the optical fiber cable 4 taken out from this portion directly to the device 5 or to the connecting portion 7. To take out the optical fiber cable 4 from the stripping section 8, as shown in FIG. 3, it is cut as close to the front end of the stripping section 8 as possible, and the cable is untwisted while being taken out.

Thereafter, in the stripping section 8, the power cable 3 from which the sheath has been stripped is subjected to a double-covering process using protective tape, protective tube compound, etc., and the cut end 4 of the optical fiber cable 4 is
In a, a branch pipe 9 as shown in FIG. 4, for example, is fitted into the double-covered part and taken out from the branch part 10.

Further, instead of the branch pipe 9 described above, the exposed portion of the optical fiber cable 4 may be treated with epoxy hardening putty or the like. The composite cable terminal processing method according to the present invention, as described above, strips the sheath of the composite cable at a position appropriately distanced from the terminal of the composite cable toward the base end, and cuts the optical fiber cable at the stripped portion. Since the cut end of the optical fiber cable is taken out and branched, the branching position of the optical fiber cable can be selected at any position, and the connection to equipment or connection for addition can be made by taking out the power cable. This can be done without any length restrictions and can solve all the conventional problems at once. In addition, it is possible to perform optical fiber cable branching work completely independently of power cable terminal assembly work. For example, even if there is a delay in installing cubicles for power cables, work related to optical fiber cables can be performed. It also has the effect of shortening the construction period.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an explanatory diagram of a conventional terminal processing method, Fig. 2 is an explanatory diagram of the terminal processing method of the present invention, Fig. 3 is a partially enlarged view of the same, and Fig. 4 is an illustration of a branch pipe. FIG.

1...Composite cable, 2...Branch pipe,
3... Power cable, 4... Optical fiber cable, 4a... Cut end, 5... Equipment, 6...
...terminal, 7 ... connection part, 8 ... peeling part, 9 ... branch pipe, 10 ... branch part.

Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. Strip the sheath of the composite cable at a position that is an appropriate distance away from the terminal of the power/optical fiber composite cable, cut only the optical fiber cable at this peeled part, and cut the cut end on the base end side. 1. A method for terminal processing a power/optical fiber composite cable, characterized in that the power cable is taken out and branched, and the power cable is terminated at the terminal of the composite cable.