JPH08197623A - Elastic self-contracting tube support body and covering method - Google Patents

Abstract

PURPOSE: To easily move a self-contracting tube from a support body onto a cable so as to contract and correctly align a position for contraction. CONSTITUTION: In an elastic self-contracting tube support body, a thin part 1b is formed on an outer peripheral face of a support body consisting of a hollow cylinder, a spherical rotary body 3 is provided on the whole surface of the thin part, and the top of it is covered with an expanded elastic self- contracting tube 2 and held. In a covering method of the elastic self-contracting tube, a cable connecting part is inserted into the hollow of the support body 1, the end part of the support body 1 is aligned with a predetermined position of the cable connecting part, and the support body 1 is pulled out while the elastic self-contracting tube 2 is being moved onto the cable connecting part, so as to contract at a predetermined position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shrinkable tube used for connecting a wire or cable.

[0002]

2. Description of the Related Art A shrinkable tube is used for easily covering a connecting portion such as an electric wire / cable or a pipe for corrosion prevention and insulation. Nowadays, elastic self-contracting tubing is often used which provides a shrink coating without the application of heat. It is quite difficult to easily cover such a cable connecting portion with such an elastic self-shrinking tube, because the tube has elasticity, and therefore various ideas have been proposed. For example, the actual exploitation 64-192
In Japanese Patent Publication No. 3, the outer peripheral surface of the cylindrical hollow body 5 is covered with an extra length of a thin plastic tube 6 as shown in FIG. 2, and the extra length of the thin plastic tube 6 is covered by one of the cylindrical hollow bodies 5. A double tube 9 in which a tube 8 having rubber-like elasticity is rolled back from one end and a lubricant layer 10 is interposed between the layers, on a hollow support body 7 that is rolled back inside at its end and inserted to the other end. Is expanded in the radial direction,
The elastic self-contractile tube 8 is arranged and supported so that the turning end of the double tube 9 and the turning end of the thin plastic tube 6 on the cylindrical hollow body 7 are coaxially aligned. Are configured.

That is, in the first step, the lubricant layer 10 in the middle of the double tube 9 which is the expanded elastic self-contracting tube is slid to advance the upper elastic self-contracting tube to elastically move it on the cable. The structure is such that a half of the self-contracting tube is covered, and then, as a second step, the hollow support 7 is pulled out from the elastic self-contracting tube on the lower side to cover it.

[0004]

In the elastic self-shrinkable tube having the above-mentioned structure, since the elastic self-shrinkable tube is double-folded, it is necessary to move the upper layer of the tube and shrink it onto the cable. However, in that case, it is difficult to accurately position the cable.

The present invention has been made in view of the above circumstances, and the self-contracting tube can be easily moved from the support body onto the cable to be contracted, and the contraction position is accurately adjusted. It is an object of the present invention to provide an elastic self-shrinkable tube support that can be used and a coating method using the same.

[0006]

SUMMARY OF THE INVENTION According to the present invention, in a support for an expanded elastic self-contracting tube, a thin-walled portion is formed on the outer peripheral surface of a support made of a hollow cylinder, and the entire surface of the thin-walled portion is formed. A support for an elastic self-contracting tube, which is provided with a spherical rotating body, and is covered with an expanded elastic self-contracting tube to hold it. Further, the cable connecting portion is inserted into the hollow portion of the support body, the end portion of the support body is aligned and arranged at a predetermined position of the cable connecting portion, and the elasticity is held on the support body via a spherical rotating body. This is a method of coating an elastic self-contracting tube, in which the elastic self-contracting tube is contracted to a predetermined position by pulling out the support while moving the self-contracting tube over the cable connecting portion.

[0007]

[Operation] Since one end of the self-contracting tube is provided to the end of the support body with a spherical rotating body so that it can be easily moved, positioning of the self-contracting tube on the cable connection becomes extremely easy. The movement of the self-shrinkable tube can be easily performed, and the shrinkage of the self-shrinkable tube becomes uniform in the covering portion, so that an excellent connection portion can be formed.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing the structure of the elastic self-shrinkable tube support of the embodiment. That is, a thin-walled portion 1a is formed on the outer periphery of a cylindrical hollow support 1 made of polyethylene or the like, and a spherical rotating body 3 having a diameter of 3 mm is provided on the entire surface of the thin-walled portion 1a. Elastic self-shrinkable tube 2 made of synthetic rubber such as propylene rubber
Is expanded and held. It is desirable that the material of the rotating body 3 is made of polyethylene or the like having a good releasability.

The end portion 1b of the elastic self-shrinkable tube support 1 thus constructed is moved so as to be aligned with the end portion of the set position on the cable connecting portion inserted into the hollow portion of the support 1. The elastic self-contractile tube 2 on the support body 1 is pulled out while moving the elastic self-contractile tube 2 on the support body 1 from the end 1b of the cylindrical hollow body support body 1 onto the cable connection portion. Can be easily shrunk and coated in place on the cable connection.

[0010]

As described above, according to the elastic self-shrinkable tube support of the present invention, the spherical self-shrinkable tube is expanded on the cylindrical hollow support 1 by expanding the elastic self-shrinkable tube. The elastic self-contractile tube can be smoothly moved to a desired position on the cable connection portion because the elastic self-contractile tube is held. In addition, by using the elastic self-contractile tube support configured as described above, it is easy to align the cable connection part inserted in the hollow part of the support at a predetermined position. The elastic self-shrinking tube can be uniformly shrunk.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the structure of an elastic self-shrinkable tube support of an embodiment,

FIG. 2 is a cross-sectional view showing a configuration of a conventional elastic self-shrinkable tube.

[Explanation of symbols]

 1,7 Cylindrical hollow support 1a Thin-walled part 1b End part 2,9 Elastic self-contractile tube 3 Spherical rotating body 5 Cylindrical hollow body 6 Thin-walled plastic tube

Claims (2)

[Claims] 1. In a support for an expanded elastic self-shrinking tube, a thin wall portion is formed on the outer peripheral surface of a support body made of a hollow cylinder, and a spherical rotating body is provided on the entire surface of this thin wall portion. A support for an elastic self-contracting tube, characterized in that it is configured to cover and hold an elastic self-contracting tube expanded above. 2. A cable connecting portion is inserted into a hollow portion of the support body, an end portion of the support body is aligned and arranged at a predetermined position of the cable connecting portion, and is held on the support body through a spherical rotating body. A method for covering an elastic self-contractile tube, characterized in that the elastic self-contractile tube is contracted to a predetermined position by pulling out the support while moving the elastic self-contractile tube on the cable connection part.