JP2000021465A - Electrical wire connecting compression sleeve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To apply a compression sleeve even to a connection, when cutting an executed jumper wire in a place close to a main track, and to expand an applying range by forming an inside diameter of an area which reaches one end side from the central part and an inside diameter of an area reaching the other end side from the central part as large/small different diameters, and forming an expanding slot on the partial peripheral surface of an inside diameter large area. SOLUTION: The inside diameter of an area (one-half side) 1a reaching one end side from the central part and an inside diameter of an area (the other half side) 1b reaching the other end side from the central part are formed as large/small different diameters. An expanding slot 3a which extends in the lengthwise direction to the central side from the sleeve end surface side is formed on the partial peripheral surface of one half side 1a of an inside diameter large area of a compression sleeve. Thus, when connecting an executed jumper wire cut in a place close to a main track, the sleeve one half side 1a of an inside diameter large area is assigned to the jumper wire curved end part of the small round part, and the other one half side 1b of an inside diameter small area of the sleeve is assigned to the jumper wire curved end part of the large round part. The expanding slot 3a expands a compressible range width of the sleeve by a quantity, corresponding to the width.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a compression sleeve for connecting electric wires.

[0002]

2. Description of the Related Art Conventionally, compression sleeves for connecting electric wires are:
One half and the other half of the sleeve length direction have the same inner diameter. This causes the following problem when the already-constructed jumper wire is cut and connected at a position shifted from the central region.

[0003] The already installed jumper wire generally has a small radius on the main line side (the end of the already installed jumper line) and a large radius on the opposite side (the center region side of the already installed jumper line) (Fig. 4). reference). In FIG. 4, reference numeral 5 denotes a jumper line, and reference numeral 6 denotes a connection location of the jumper line 5.

[0004] For insertion of the wire at the curved end of a small radius, a sleeve having a large inner diameter is suitable, and for the wire at the curved end of the large radius, the radius of the curved end is smaller than that of the small wire. A sleeve with an inner diameter is suitable.

[0005] In the case of a sleeve having the same inside diameter on one half side and the other half side in the length direction, a sleeve having an inside diameter suitable for the wire at the curved end of a small radius has a too large inside diameter for the wire at the curved end of the large radius. With sleeves that are inadequate and suitable for large radiused end wires, the small radiused end wires may be difficult or impossible to insert.

That is, a compression sleeve having the same inner diameter on one half side and the other half side is not suitable for connection of a jumper wire cut at a position close to the main line.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the above-mentioned problems of the prior art. That is, the present invention is intended to expand the applicable range of the compression sleeve so that the present invention can be applied to the connection in the case where the already installed jumper wire is cut at a position near the main line.

[0008]

According to the present invention, in order to solve the above-mentioned problems, the inner diameter of a region extending from the central portion to one end of the compression sleeve for electric wire connection and the inner diameter of the region extending from the central portion to the other end are increased or decreased. A split groove extending in the length direction from the end face side to the center side is formed on a part of the peripheral surface of the region having the different diameter and the larger inner diameter. Preferably, the split groove is wedge-shaped with a wide end face of the sleeve.

[0009]

Embodiments of the present invention will be described with reference to the drawings. The compression sleeve 1 for electric wire connection has an inner diameter of a region (hereinafter, referred to as a half side) 1a extending from the center to one end and an inner diameter of a region (hereinafter, referred to as the other half) 1b extending from the center to the other end. Different diameters are used.

A split groove 3a is formed on a part of the circumferential surface of the half side 1a of the compression sleeve 1 having a larger inner diameter, extending in the length direction from the sleeve end face side to the center side. A split groove 3b extending in the length direction from the sleeve end face side to the center side may also be formed on a partial peripheral surface of one half side, that is, the other half side 1b having a smaller inner diameter.

Preferably, the split groove 3a on the circumferential surface of the half 1a having the larger inner diameter of the sleeve 1 has a wedge shape with a wide end surface of the sleeve 1. In the drawing, reference numeral 4 denotes a stopper for regulating the insertion depth of the electric wire 2.

The inner diameter of one half 1a of the sleeve 1 and the other half 1
The fact that the inner diameter of b is different from the inner diameter of b is that the partial groove 3a extending in the length direction from the end face side to the center side is formed on a part of the circumferential surface of the half side 1a having the larger inner diameter, and the following result is obtained. Bring.

If the inside diameter of the one half 1a of the sleeve 1 and the inside of the other half 1b are different from each other, when connecting an already installed jumper wire cut near the main line, the one half 1a of the sleeve 1 having the larger inside diameter is Allotted to the curved end of the small jumper wire, and the one half 1b of the smaller inner diameter of the sleeve 1
Can be used for the large jumper wire curved end of the radius.

A split groove 3a extending in a predetermined direction formed on a part of the circumferential surface of one half 1a of the sleeve 1 increases the width of the compressible range of the sleeve 1 by an amount corresponding to the width of the split groove 3a. That is, in the conventional sleeve having no split groove, the compressible range is invariable determined by the sleeve diameter, but in the sleeve of the present invention, the diameter can be substantially changed within the width of the split groove 3a. The range that can be compressed is expanded. The expansion of the compressible range of the sleeve results in a wider range of application of the sleeve to the radius of the jumper curve end.

If the inner diameters of the one half and the other half of the compression sleeve are different from each other, only the two compressible ranges are available for the large and small inner diameters. The effect of expanding the range cannot be obtained.

On the contrary, in the present invention, the compressible range of the sleeve is widened as described above. Here, it is achieved to expand the application range of the sleeve to the radius of the jumper wire curved end.

Thus, the present invention achieves the object of enabling the compression sleeve to be applied to the connection of a jumper wire cut at a position near the main line.

Since the compression sleeve of the present invention has the above-described functions, it is particularly suitable for the indirect hot-line construction method (a method of working with an insulating operating rod at a location away from the hot wire).

When the split groove 3b is also formed on one half side of the smaller inner diameter of the sleeve 1, that is, on a partial peripheral surface of the other half side 1b, the other half 1b also has a curved end of the jumper wire curved end. Of the sleeve 1 is expanded.

When the split groove 3a on a part of the peripheral surface of the sleeve 1 has a wide wedge shape on the end face side of the sleeve 1, not only the insertion of the connected electric wire 2 in the length direction of the sleeve 1 but also the cut groove 3a is formed. The connecting wire 2 can be inserted from the side of the sleeve 1, so that the applicable range of the sleeve 1 can be further expanded.

The compression sleeve according to the present invention can be used not only for jumper wires (jumper sleeves) but also in all tension-free locations.

[0022]

As apparent from the above description, according to the present invention, the following effects are achieved.

1. The applicable range of the compression sleeve for electric wire connection can be expanded as compared with the related art.

2. The compression sleeve can also be applied to the connection of the jumper wire cut near the main line.

3. It is possible to provide a compression sleeve particularly suitable for the indirect hot-line method.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a compression sleeve according to the present invention.

FIG. 2 is a right side view of the compression sleeve shown in FIG.

FIG. 3 shows a left side view of the compression sleeve of FIG. 1;

FIG. 4 is a perspective view of a jumper wire.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compression sleeve 1a Sleeve half side 1b Sleeve other half side 2 Electric wire 3a Split groove 3b Split groove

Claims (3)

[Claims] An inner diameter of a region extending from a central portion to one end is different from an inner diameter of a region extending from the central portion to the other end, and an end surface is provided on a partial peripheral surface of a region having a larger inner diameter. A compression sleeve for connecting electric wires, wherein a split groove extending in a length direction from a side to a center side is formed. 2. An inner diameter of a region extending from the central portion to one end and an inner diameter of a region extending from the central portion to the other end are different in diameter from each other. A compression sleeve for connecting electric wires, wherein a split groove extending in the length direction is formed on the side. 3. A split groove on a part of a peripheral surface of a region having a larger inner diameter has a wide wedge shape on a sleeve end surface side.
A compression sleeve for connecting an electric wire as described in the above.