JPS6056369B2 - Auxiliary tape for connecting plastic cables - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an auxiliary tape for use in connecting cables with plastic sources.

Conventionally, the first method for connecting cables as described above is
The method shown in the figure is known.

That is, the connection 5 of the plastic source cables 5, 5
After covering A with the plastic sleeve 6, a heat-shrinkable tape 8 is wrapped under tension around the outside of the portion where the end of the plastic sleeve 6 overlaps with the cable sheath 7, and then the heat-shrinkable tape 8 is fixed. The end of the plastic sleeve is heated from the outside using a heating means (not shown) such as a torch lamp, gas burner, or hot air blower to heat-fuse the end of the plastic sleeve onto the cable sheath. At this time, the heat-shrinkable tape 8 is heated and shrinks, pressing the end of the plastic sleeve onto the cable sheath. Therefore, according to the above-mentioned method, when heating the heat-shrinkable tape, it is difficult to control the amount of heating because it is performed using a heating means such as a torch lamp, gas burner, or hot air blower, and it is difficult to control the amount of heating, and it is difficult to heat the heat-shrinkable tape. There are some drawbacks that require The object of the present invention is to provide an auxiliary tape for connecting plastic source cables, which can advantageously overcome the aforementioned drawbacks.

Next, the present invention will be explained in detail using illustrated examples.

2 and 3 show an example of the first invention, in which thin electrode wires 2A, 2A and 2B, 2B are arranged on both sides of the stretchable cloth tape 1 along its longitudinal direction, respectively. The two electrode wires 2A, 2A and 2B, 2B are attached to one side of the elastic cloth tape and the other side. It is exposed alternately on the sides.

With this configuration, the contact area of the electrode wire with the conductive tape 3 is approximately doubled compared to the case where one electrode wire is sewn to each side of the elastic cloth tape so as to be exposed alternately on the front and back sides. be able to. Furthermore, the sewing strength against heat can be improved compared to the case where electrode wires and fiber threads are used as upper threads and lower threads to be sewn onto a stretchable cloth tape. In the case of Fig. 3, one electrode wire extends continuously along the tape surface in the distance between the zigzag bending points, but the electrode wire as the upper thread and the bobbin thread extend between the bending points. The electrode wires may be alternately exposed in series along the tapered surface. The stretchable cloth tape 1 is woven with heat-resistant fibers, and the fibers intersect diagonally with respect to the longitudinal direction of the cloth tape.

Therefore, when this cloth tape is pulled in the longitudinal direction, it will stretch up to a certain amount, but will not stretch beyond that due to the tensile strength of the fibers. Furthermore, the electrode wires 2A, 2
A stretchable conductive tape 3 is integrally laminated on one side of the bound stretchable cloth tape 1 of B.

The conductive tape 3 is made of, for example, a silicone rubber tape or a crosslinked polyethylene tape mixed with conductive powder that generates heat due to electrical resistance. Therefore, as shown in FIG. 1, this auxiliary connection tape is wound and fixed under tension around the end of the plastic sleeve 6 located on the cable sheath 7 or the joint of the plastic sleeve 6, and then the electrode wire is When electricity is applied (voltage is applied) between 2A and 2B, the conductive tape 3 generates heat due to electrical resistance, and this heat melts the ends of the cable sheath 7 and the plastic sleeve or the seams of the plastic sleeve 6. wear.

At this time, the electrically conductive tape 3 is heated in its stretched state and contracts to return to its original state, and the force of this shrinking force presses the plastic sleeve 6 toward the center of the cable.

and the ends of the cable sheath 7 and the plastic sleeve 6 or the ends of the plastic sleeve 6. After the seam is sufficiently heat-sealed, the auxiliary connecting tape is removed. 4 and 5 show an example of the second invention,
In the structure shown in FIG. 3, a heat-resistant rubber tape 4 is further integrally laminated on the back surface of the elastic cloth tape 1, that is, the surface on which the conductive tape 5 is not laminated.

According to the first aspect of the invention, electrode wires 2A and 2B consisting of upper and lower threads are sewn and secured to the stretchable cloth tape 1 in a wavy manner along its longitudinal direction, and furthermore, one side of the tape 1 Since the stretchable conductive tape 3 is integrally laminated on the surface of Since variations in the amount of stretching can be eliminated, the plastic sleeve can always be heat-sealed onto the cable sheath in a uniform state.

(2) Since the cloth tape is laminated integrally with the conductive tape, the tear strength of the conductive tape at high temperatures is improved, and the amount of elongation of the conductive tape is always constant.
It is possible to obtain constant electrical resistance heat. According to the second invention, since a heat-resistant rubber tape is further integrally laminated on the back side of the elastic cloth tape in the first invention, the heat generation of the conductive tape may be uneven in temperature due to some reason. Even if the plastic sleeve is heated at a uniform temperature, the heat-resistant rubber tape acts as a heat-uniforming material, so the plastic sleeve can be heated at a uniform temperature.

[Brief explanation of drawings]

Fig. 1 is a cutaway front view showing a conventional plastic sheathed cable connection method, Fig. 2 is a plan view showing an elastic cloth tape in the first invention, and Fig. 3 is an embodiment of the first invention. FIG. 4 is a plan view showing an embodiment of the second invention, and FIG. 5 is a sectional view taken along the line AN in FIG. 4. In the figure, 1 is a stretchable cloth tape, 2A and 2B are electrode wires, 3 is a stretchable conductive tape, and 4 is a heat-resistant rubber tape.

Claims (1)

[Scope of Claims] 1. Electrode wires 2A and 2B consisting of an upper thread and a lower thread are sewn and fixed to a stretchable cloth tape 1 and extend in a wavy manner along its longitudinal direction, and are further fixed to one surface of the tape 1. An auxiliary tape for connecting a plastic sheathed cable, which is made by integrally laminating a stretchable conductive tape 3 on a plastic sheathed cable. 2 Electrode wires 2A and 2B consisting of an upper thread and a lower thread are sewn and secured to the elastic cloth tape 1 in a wavy manner along its longitudinal direction, and furthermore, one surface of the tape 1 is provided with an elastic material. An auxiliary tape for connecting a plastic sheathed cable, comprising a conductive tape 3 integrally laminated and a heat-resistant rubber tape 4 integrally laminated on the other side of the tape 1.