JPS6041612Y2 - Electrical cable for hanging - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hanging electric cable that is laid vertically and supported in a suspended state for the purpose of supplying power to each floor of a building.

FIG. 1 shows an example of a conventional hanging electric cable.

That is, in the conventional hanging electric cable, a plurality of individually insulated cable cores 1 are twisted together, and a pair of metsenger wires 3 are placed along both sides of this cable core twisted body 2, and these are connected in common. It had a structure in which it was covered with a cable sheath 4 and integrated.

However, in such a structure, when the cable core twisted body 2 and the cable sheath 4 have different expansion and contraction characteristics when the cable core twisted body 2 and the cable sheath 4 are repeatedly expanded and contracted, a gap is created between the two, and the cable core twisted body 2 is There was a drawback that the cable sheath 4 could no longer support its own weight, and the cable core twisted body 2 would slide down under its own weight.

An object of the present invention is to provide a hanging electrical cable that can prevent the cable core twisting body from slipping down with respect to the cable core even if the cable core twisting body expands and contracts.

Hereinafter, specific examples of the present invention will be explained in detail with reference to the drawings.

As shown in FIGS. 2 and 3, the hanging electric cable of this embodiment has three cable cores 1 and an interposer 5 twisted together to form a circular cross section.

On the outer periphery of such a cable core twisted body 2 having a circular cross section, a stopper strip 6 is tightly wound in an open helical manner so as to be bitten into the interposer 5 and also to protrude from the outer periphery.

A pair of metsenger wires 3 are placed at a predetermined interval on both sides of the cable core twisted body 2 around which the stopper strip 6 is wound, and these and the cable core twisted body 2 are formed by extrusion coating of plastic or the like. It is integrated with a cable sheath 4.

The stopper strip 6 bites into the inner surface of the cable sheath 4 and is locked to the cable sheath 4.

In such hanging electric cables, the stopper strip is tightly wound in an open spiral around the outer periphery of the twisted cable core, and is bitten into the inner surface of the cable sheath.
It is possible to prevent the cable core twisted body from slipping down with respect to the cable sheath.

FIG. 4 shows another embodiment of the hanging electric cable according to the present invention.

In this embodiment, two stopper strips 6 are provided on the outer periphery of the twisted cable core assembly 2 whose cross section is S゜circular due to the presence of an interposition.
The only difference from the above-mentioned embodiments is that they are tightly attached in an open helical manner so as to intersect with each other, and the rest of the structure is the same.

In this way, the surface of the twisted cable assembly 2 has more irregularities, and it is possible to more reliably prevent the cable core twisted assembly 2 from falling off the cable sheath 4.

As explained above, in the hanging electric cable according to the present invention, the stopper strip is tightly wound in an open spiral around the outer periphery of the cable core twisted body, which has a circular cross section by twisting the intervening material. Since the strips are bitten into the cable sheath, it is possible to prevent the cable core twisted body from slipping off against the cable sheath.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a conventional hanging electric cable, Fig. 2 is a cross-sectional view showing an embodiment of the hanging electric cable according to the present invention, and Fig. 3 is a line taken along line X-X in Fig. 2. 4 is a longitudinal sectional view showing another embodiment of the hanging electric cable according to the present invention. 1... Cable core, 2... Cable core twisted combination, 3... Metsenger wire,
4...Cable sheath, 5...Intervention,
6... Stopper strip.

Claims (1)

[Scope of utility model registration request] In a hanging electrical cable in which a cable core twisted body and a mesh wire placed along the cable core are integrally connected by a cable sheath, the cable core twisted body has an intervening part twisted together and a cross section of S゛. For hanging, the cable core has a circular shape, and a stopper strip is tightly wound in an open spiral around the outer periphery of the cable core twisted body, and the stopper strip is bitten into the inner surface of the cable sheath. electric cable.