JPS5835007B2 - End treatment method for rubber/plastic insulated metal sheath cables - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention particularly relates to an improved end treatment method for rubber-plastic insulated metal sheathed cables.

Normally, when cables are transported or stored by being wound around a drum or the like, it is necessary to apply appropriate waterproofing treatment to the ends of the cables in order to prevent water from entering the ends.

Furthermore, when installing the cable, it is necessary to perform sufficient integration treatment between the metal sheath and the cable core in order to prevent misalignment between the two.

Incidentally, when installing a cable, the metal sheath is often subjected to large friction, which causes the metal sheath to elongate in the length direction, causing a misalignment between the two. It is.

In view of the above points, conventionally, as shown in FIG.
A method of folding the metal sheath 2 over the end circumference and fixing it on the end circumference of the metal sheath 2 with a binding line 4, and then fitting a predetermined waterproof cap 5 over these circumferences for waterproofing. has been adopted.

In the figure, 6 is a rubber/plastic insulator, 7 is a semiconducting layer, 8 is a rubber/plastic sheath, 8 is a corrugated metal sheath made of aluminum or iron, 9 is a rubber/plastic anticorrosion layer, and 10 is a waterproof layer. 11 is a bind wire, and 12 is a waterproof compound.

However, in the edge treatment method carried out as described above, the insulator 3, the semiconducting layer 6, the sheath 8 and the 2
Not only did it have to be peeled off, but it was also necessary to fold the end of the conductor 3 over the two circumferences of the metal sheath and bind it with the binding wire 4, which was obviously complicated and required a lot of man-hours. .

The present invention aims to simplify the complicated work that is a drawback of the prior art.

That is, the gist of the method is to compress the end of a rubber/plastic insulated metal sheathed cable to be treated to the extent that the metal sheath is embedded in the inner cable core, and to fix the metal sheath and cable core to each other; Furthermore, after a waterproof member is interposed in the recess on the surface of the end of the cable formed by the compression, a waterproof cap is fitted over the periphery of the end of the cable to perform waterproof treatment.

Next, the present invention will be explained in detail with reference to FIG. 2 of the accompanying drawings.

Note that the following examples are merely illustrative of the present invention, and it goes without saying that the present invention is not to be interpreted in a limited manner by these examples.

Also, in Figure 2, the same numbers as in Figure 1 are
Each may be interpreted as referring to something that is the same as or similar to the one in the same figure.

That is, in this embodiment, first, for example, 5
~10 mrn, except for square dice to round dice (not particularly shown).

) to compress the entire cable.

Here, the compression must be performed to such an extent that the metal sheath 2 of the cable sinks into the inner cable core 1.

Thus, the metal sheath 2 and cable core 1 are fixed to each other.

Next, since the anti-corrosion layer 9 of the compressed portion A is damaged, this portion A is appropriately repaired using a waterproof tape 13 or the like.

At this time, the waterproof tape 13 is wound so as to be the same as or slightly larger than the outer diameter of the anticorrosive layer 9, thereby improving the watertightness between the anticorrosive layer 9 and the waterproof cap 5, which will be described later.

Thereafter, a predetermined waterproof cap 5 is fitted around the end of the cable, and a predetermined waterproofing treatment is applied to complete the work.

Now, according to the end treatment method of this embodiment carried out in this manner, fixing between the metal sheath 2 and the cable core 1 can be accomplished by simply compressing the ends of the cable all at once using any compressor. Therefore, the work can be significantly simplified compared to the conventional technique.

Incidentally, according to the inventors' confirmation, the conventional method required 90 minutes/one end/one person's time, while the method of this embodiment required 20 minutes/one end. /It took only one person's time.

In the above embodiment, the entire cable is compressed from above the anti-corrosion layer, but it is also possible to remove the anti-corrosion layer at the compression part and compress from above the metal sheath, or in the above embodiment, the cable is compressed only at one location. However, it goes without saying that compression may be performed at two or more locations.

It goes without saying that these matters essentially belong to the technical scope of the present invention.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a conventional end treatment method for this type of rubber/plastic insulated metal sheath cable, and FIG. 2 is an explanatory diagram of an embodiment of the end treatment method for a rubber/plastic insulated metal sheath cable of the present invention. . 1: Cable core, 2: Metal sheath, 3: Conductor, 5: Waterproof cap, 13: Waterproof tape wrapping layer, A: Compression part.

Claims (1)

[Claims] 1. Compress the end of the rubber/plastic insulated metal sheathed cable to be processed to the extent that the metal sheath is embedded in the inner cable core to fix the metal system and the cable core, and further compress the cable formed by the above compression. An end treatment of a rubber/plastic insulated metal sheathed cable, characterized in that a waterproof member is interposed in a recess on the end surface of the cable, and then a waterproof cap is fitted over the circumference of the end of the cable to perform waterproof treatment. Law.