JPS6035139Y2 - paper interposed cable - Google Patents

Description

[Detailed description of the invention] The present invention relates to a paper-interposed cable, particularly a paper-interposed cable that has excellent flexibility and has a good finished outer diameter. This invention relates to a paper-interposed cable with a good finished outer diameter.

Conventionally, in the production of multi-core cable cables, as shown in Figure 1, a plurality of cable cores 1 are twisted and assembled, and intervening strings are inserted between the twisting intervals 2 and 3 of each core as necessary. However, a tape 4 is further wound around the outer periphery to make the cross section approximately circular.In recent years, from the viewpoint of production efficiency and economy, paper tape has been used in place of the intervening string with a string-like bottom shape. I'm starting to do that.

In this case, the paper tape is fed out from a bobbin attached to a twisting machine and formed into a string shape by a guide pipe supported by a batten. Even if it is wound, it is difficult to finish, and furthermore, it has the disadvantage of low flexibility.

This invention was made to solve the above-mentioned difficulties.
That is, in FIG. 1, a plurality of twisted wire cores 1. 1
．． 1, each of the twisting gaps 2, 2, 2 is filled with an inclusion, and the multi-core cable is formed into a substantially circular cross section by the restraining tape winding layer 4. The present invention relates to a paper-interposed cable characterized in that the inclusions to be filled are formed by paper tapes each formed into a string shape with a plurality of guide pipes.

An embodiment of the present invention will be described below with reference to the drawings.

In Figure 2, cable core 1. 1. The paper tapes inserted at each twisting interval in 1 are shaped into strings with a substantially circular or elliptical cross section by adjusting the amount of paper tape as appropriate, and form five divided string-like aggregates 2at, 2b, 2c. ,
They are arranged as 2d and 2e.

The string-like aggregate has a cross-sectional area such that a portion of the cross-section is outside the circumcircle of each wire core 1 so that the cross-section of the cable becomes circular when the restraining tape is wound. In particular, it is preferable that the assembly 2c disposed at the center of the stranding interval has a substantially elliptical cross section with its long axis in the diametrical direction of the cable.

In this case, the guide pipe attached to the batten is shaped to have a circular opening on the paper tape inlet side and an oval opening with approximately the same area on the outlet side, making it easy to insert the paper tape. And it is possible to prevent the paper from running out.

FIG. 3 shows a cross section of the cable after the restraining tape 4 has been wound.

In FIGS. 2 and 3, the same parts as in FIG. 1 are indicated by the same symbols.

As described above, the paper-interposed cable of the present invention has advantages such as excellent flexibility and a good cross-sectional shape.

[Brief explanation of the drawing]

FIG. 1 is an explanatory cross-sectional view of a paper-interposed cable, and FIGS. 2 and 3 are cross-sectional views of the paper-interposed cable of the present invention before and after winding with a restraining tape, respectively. 1... Wire core, 2... Twisting interval, 4...
. . . Pressing tape winding layer, 2a to 2e . . . String-like aggregate.

Claims (1)

[Claims for Utility Model Registration] 1. A multi-core cable in which a plurality of twisted wire cores are filled with inclusions at each twist interval, and the bottom is shaped to have a substantially circular cross-section with a restraining tape winding layer, A paper-interposed cable characterized in that the inclusions filled in each of the twisting intervals are each made of a paper tape whose bottom is shaped like a string with a plurality of guide pipes. 2. The paper-interposed cable according to claim 1, wherein the string-shaped paper tape has a substantially elliptical cross section with a long axis in the cable diameter direction at the center of each twisting gap.