JPS5821456Y2 - communication cable - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a communication cable used in telephone exchanges and the like.

As shown in FIGS. 1 and 2, in conventional communication cables, the sheathing portions of a large number of core wires 1 are colored in different colors, and dot marks 1a to 1n of different types are printed on the sheathing portions, respectively. The core wires 1 can be identified, and the core wires 1 are arranged in concentric circles in an orderly manner by the cable jacket 10.

As mentioned above, conventional communication cables have a large number of core wires 1 arranged in concentric circles, but the arrangement order may shift during the manufacturing process, and when only core wires with the same dot mark are taken out. There is a problem that cannot be confirmed unless all the core wires in that part are taken out.

Furthermore, cable wiring workers usually try to improve work efficiency by grouping together multiple core wires that are appropriate for the job, but since those core wires must be selected in advance, There is a problem that the work is time consuming.

In view of this problem, the present invention makes it possible to twist the core wires for each dot mark of the same type and select the desired core wire without disassembling all the core wires, thereby increasing the reliability of manufacturing operations. The purpose is to provide a communication cable that can improve performance and wiring work.

Next, an example of implementation of the present invention will be described with reference to FIGS. 3 and 4.

3 and 4, in the communication cable of the present invention, one to several dot marks 1a to 1n are intermittently printed on the coated portion of each core wire 1, which is colored according to color.

This point is similar to the conventional example. In the present invention, the core wires 1 are assembled according to the type of dot marks 1a to 1n to form core wire assemblies AN, respectively.

Each of the core wire aggregates AN is bound by, for example, gently twisting the core wires 1a to 1n.

A communication cable is constructed by arranging each core wire assembly AN in a concentric circle and bundling them together with the cable jacket 10.

Since the communication cable of the present invention is constructed as described above, for example, if only the core wires with one dot mark 1a printed on them are to be taken out, they can be taken out all at once by selecting the core wire assembly A. It can be done extremely easily and quickly.

Therefore, it is no longer necessary to check the other core wires one by one, and even if you take out the desired core wire assembly, the other core wires will not fall apart, so the wiring work can be completed more quickly. I can do it.

Furthermore, by forming blocks into individual dot marks 1a to 1n, cables can be manufactured without being concerned with the arrangement order deviations that occur in the prior art, so there is no need to consider the positioning of the core wires.

As described above, according to the present invention, the wiring work can be performed easily and quickly, and the cost can be reduced accordingly.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing one end side of a conventional communication cable, Fig. 2 is a simplified sectional view taken along line II-II in Fig. 1, and Fig. 3 is an explanatory diagram showing one end side of a conventional communication cable.
The figure is an explanatory diagram showing one end side of the communication cable of the present invention.
The figure is a simplified sectional view taken along the line ■■-IV in FIG. 3. 1... Core wire, 1a-1n... Dot mark, A-N... Core wire assembly, 10...
・Cable jacket.

Claims (1)

[Scope of utility model registration request] In a communication cable in which the sheathing portion of each core wire is colored in a different color and dot marks for identification are printed on the sheath portion for each type, and these are bundled with a cable jacket, each core wire is marked with dot marks of the same type. A communication cable characterized in that the core wires are twisted together to form core wire assemblies, and the core wire assemblies are bundled by the cable jacket.