JP2014135201A - Sleeve for wire connection and wire connection method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sleeve for wire connection ensuring reliable compression work while reducing occurrence of failure.SOLUTION: A sleeve 1 for wire connection includes a tubular first compression part 10 having an insertion hole 12 into which the tip of a first wire is inserted, and a C-shaped second compression part 20 integrated with the first compression part 10 and having an opening 22 into which a second wire is inserted. The insertion hole 12 has one closed end, and after the first wire is inserted into the insertion hole 12 from the other end thereof, and held by the first compression part 10 by compressing the first compression part 10, the second wire is inserted from the opening 22 and the second compression part 20 is compressed to hold the second wire by the second compression part 20.

Description

  The present invention relates to an electric wire connecting sleeve and an electric wire connecting method for connecting electric wires.

  Conventionally, a C-type sleeve has been generally used as an electric wire connecting sleeve. Two electric wires are accommodated in the C-type sleeve, and the C-type sleeve is compressed and tightened by a compression fixing device. The wires are held in an electrically connected state.

  Conventionally, various types of sleeves other than the C-type sleeve have been proposed as the wire connection sleeve. For example, Patent Literature 1 discloses a cylindrical clamping device having a 6-shaped cross section for clamping two conductive wires.

Utility Model Registration No. 3114133

  However, although it is necessary to support the two inserted wires to prevent them from shifting at the time of compression, since the compressor is held in one hand, one wire that can be supported or C It will support the mold sleeve itself.

  For this reason, when one electric wire is supported, the other electric wire may be displaced, and when the C-shaped sleeve itself is supported, a hand may be caught during compression.

  Also in the technique described in Patent Document 1, there is a possibility that the electric wire is displaced, and there is a possibility that a defect may occur due to compression including the covered portion of the electric wire.

  An object of the present invention is to provide an electric wire connecting sleeve and an electric wire connecting method which solve such problems and realize the compression work reliably and reduce the occurrence of defects.

  In order to achieve the above object, the present invention has the following configuration.

  (1) A cylindrical first compression portion having an insertion hole into which the tip of the first electric wire is inserted, and a first compression portion formed in parallel to the insertion hole and having an opening into which the second electric wire is inserted. 2 compression portions, one end of the insertion hole is closed, and the second compression portion shares a part of the side surface of the first compression portion and extends in an arc from the shared side surface. It further has an extending piece, and the opening is formed between the tip of the extending piece and the side surface.

  (2) A wire connection method for connecting two wires using the wire connection sleeve of (1), wherein the first wire is inserted from the other end of the insertion hole and the first compression is performed. A step of sandwiching the first electric wire in the first compression portion by compressing the portion, and a step of inserting the second electric wire from the opening and compressing the second compression portion to the second compression portion. And a step of clamping the second electric wire.

  According to (1) and (2), when the first wire is inserted into the first compression section, the tip of the first wire stops at the back of the insertion hole, so the wire connecting sleeve is the first wire. Therefore, it is not necessary for the worker to support the wire connection sleeve as in the prior art. Moreover, since the front-end | tip part of the 1st electric wire does not protrude from the 1st compression part, generation | occurrence | production of the malfunction that the skin covering part of an electric wire compresses with being inserted in the 1st compression part can be prevented. it can. Moreover, it becomes possible to perform each connection operation | work of a 1st electric wire and a 2nd electric wire reliably by compressing in a 2nd compression part after the compression in a 1st compression part. This can reduce the occurrence of defects.

  According to the present invention, it is possible to reliably perform the compression work and reduce the occurrence of defects.

It is a perspective view which shows the external appearance of the sleeve 1 for electric wire connection in 1st Embodiment of this invention. It is a front view of the sleeve 1 for electric wire connection. It is explanatory drawing which shows the connection process of the electric wire using the sleeve 1 for electric wire connection of 1st Embodiment. It is explanatory drawing which shows the connection process of the electric wire using the sleeve 1 for electric wire connection of 1st Embodiment. It is explanatory drawing which shows the connection process of the electric wire using the sleeve 1 for electric wire connection of 1st Embodiment. It is explanatory drawing which shows the connection process of the electric wire using the sleeve 1 for electric wire connection of 1st Embodiment. It is explanatory drawing which shows the connection process of the electric wire using the sleeve 1 for electric wire connection of 1st Embodiment. It is a plane which shows the principal part structure of the sleeve 1 for electric wire connection in 2nd Embodiment of this invention. It is explanatory drawing which shows the connection process of the electric wire using the sleeve 1 for electric wire connection in 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
FIG. 1 is a perspective view showing an appearance of a wire connecting sleeve 1 according to the first embodiment of the present invention. The wire connection sleeve 1 connects two electric wires 100 to each other, and includes a first compression unit 10 to which a first electric wire is connected and a second compression unit 20 to which a second electric wire is connected. I have.

  The 1st compression part 10 is provided with the 1st compression part main body 10a of the substantially rectangular parallelepiped shape extended in a longitudinal direction, and the insertion hole 12 formed in this 1st compression part main body 10a.

  Both end surfaces of the first compression section main body 10a are substantially rectangular, and one long side swells in an arc shape. For convenience of explanation, among the four side surfaces of the first compression section main body 10a, the side surface bulging in an arc shape is the outer surface, the side surface facing the outer surface is the inner surface, and one of the two side surfaces between the outer surface and the inner surface is the upper surface. The other will be referred to as the lower surface.

  The insertion hole 12 is a cylindrical hole extending from one end surface of the first compression body 10a toward the other end surface, and one end of the insertion hole 12 is open and the other end is closed. Has been. The diameter of the insertion hole 12 is set to a size that allows the tip of the electric wire to be inserted. Thus, the 1st compression part 10 is formed in the cylinder type which has the non-penetrating insertion hole 12. FIG.

  The second compression unit 20 includes an extending piece 20 a extending from the first compression unit 10 and an opening 22.

  The extending piece 20a extends along the lower surface in a direction perpendicular to the insertion hole 12 from the lower surface side end of the inner surface of the first compression body 10a. The distal end portion of the extending piece 20a is bent in an arc shape, and the distal end faces the upper surface side end portion of the inner surface of the first compression portion main body 10a.

  The opening 22 is formed of a space formed between the upper surface side end of the inner surface of the first compression section main body 10a and the tip of the extending piece 20a, and the width of the opening 22 is set to a size that allows insertion of an electric wire. ing.

  Here, the first compression unit 10 and the second compression unit 20 share a portion on the inner surface side of the first compression unit 10. For this reason, the 2nd compression part 20 is formed in the C shape by the portion by the side of the inner surface of the 1st compression part 10, and extended piece 20a, when it sees from the front.

  Further, an inner space 24 extending in parallel to the insertion hole 12 is formed by the inner surface of the first compression section main body 10a and the inner surface of the extending piece 20a. For this reason, the electric wire can be inserted into the internal space 24 through the opening 22. Moreover, the longitudinal direction both sides of the internal space 24 are open | released to the magnitude | size which can insert the front-end | tip part of an electric wire. For this reason, the front-end | tip part of an electric wire can be inserted in the internal space 24 also from the longitudinal direction both sides of the 2nd compression part 20. As shown in FIG.

  FIG. 2 is a front view of the wire connecting sleeve 1. As shown in FIG. 2, the wire connecting sleeve 1 is formed in a substantially six-letter shape when the insertion hole 12 is viewed in the axial direction. The first electric wire 100 is arranged in the insertion hole 12, and the second electric wire 200 is arranged in the internal space 24.

Next, an electric wire connecting process using the electric wire connecting sleeve 1 will be described.
First, the worker removes the skin covering of the tip portions of the first electric wire 100 and the second electric wire 200 to expose the copper wire. At this time, the length of the copper wire exposed in the first electric wire 100 is set to be slightly longer than the depth of the insertion hole 12. Next, the worker inserts the copper wire into the insertion hole 12 until the copper wire comes into contact with the end portion of the insertion hole 12, as shown in FIGS. 3 (a) and 3 (b). Next, as shown in FIG. 4, the worker compresses the first compression unit 10 by sandwiching the upper surface and the lower surface of the first compression unit main body 10 a using the compression fixing device 40. At this time, the insertion hole 12 of the first compression unit 10 is deformed as shown in FIG. 5A, so that the electric wire 100 is sandwiched by the first compression unit 10.

  Next, as shown in FIGS. 5A and 5B, the worker connects the copper wire of the second electric wire 200 from the opening 22 or the longitudinal end of the second compression portion 20 to the internal space. 24. Next, as shown in FIG. 6, the worker compresses the second compression unit 20 using the compression fixing device 40. At this time, the extension piece 20 a of the second compression unit 20 is deformed, so that the electric wire 200 is sandwiched by the second compression unit 20. Thereby, the two electric wires 100 and 200 are connected by the electric wire connecting sleeve 1.

  By the way, the connection process shown in FIGS. 3-6 peels off the skin covering of the front-end | tip part of the 2nd electric wire 200, and opens 22 or 2nd compression part with respect to the 2nd compression part 20 in the exposed copper wire. 20 is inserted into the internal space 24 from the end in the longitudinal direction. On the other hand, in the connecting step shown in FIG. 7, a part of the cover of the middle part of the second electric wire 200 is peeled off, and the exposed copper wire is attached to the second compression unit 20.

When attaching the wire connecting sleeve 1 to the middle portion of the second electric wire 200, first, as shown in FIG. 3, the first electric wire 100 is attached to the first compressing portion 10 and compressed, and then FIG. As shown in a), the middle portion of the copper wire exposed in the second electric wire 200 is inserted into the internal space 24 through the opening 22 of the second compression section 20 and positioned in the internal space 24. And the 2nd compression part 20 is compressed as shown in FIG.7 (b). Thereby, the two electric wires 100 and 200 are connected by the electric wire connecting sleeve 1.
[Second Embodiment]

  FIG. 8 is a perspective view showing an appearance of the wire connecting sleeve 1 according to the second embodiment of the present invention. In addition, about the member same as the member in 1st Embodiment shown in FIG. 1, or the member of the same function, detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  The wire connection sleeve 1 in the first embodiment shown in FIG. 1 is closed at the other end of the insertion hole 12, whereas the wire connection sleeve 1 in the second embodiment shown in FIG. Instead of the insertion hole 12 shown in FIG. 1, a through hole 13 having both ends opened is provided.

Then, when connecting the two electric wires 100 and 200 using the electric wire connecting sleeve 1, the worker first attaches the cap 50 to one end of the through hole 13 as shown in FIG. And close. Thereafter, the electric wires 100 and 200 are inserted into the electric wire connecting sleeve 1 and compressed in the same manner as the steps shown in FIGS. Thereby, the two electric wires 100 and 200 are connected by the electric wire connecting sleeve 1. The cap 50 may be attached or removed as it is after the compression of the first compression unit 10 and the compression of the second compression unit 20 are completed.
Instead of the cap 50, one end of the through hole 13 may be sealed with an adhesive tape.

  As described above, according to the present embodiment configured as described above, when the first electric wire 100 is inserted into the first compression portion 10, the tip of the first electric wire 100 stops at the back of the insertion hole 12, The wire connection sleeve is supported by the first electric wire, so that the operator does not need to support the wire connection sleeve 1. Moreover, since the front-end | tip part of the 1st electric wire 100 does not protrude from the 1st compression part 10, the malfunction that the skin covering part of the electric wire 100 compresses with being inserted in the 1st compression part 10 generate | occur | produces. Can be prevented. In addition, by performing the compression in the second compression unit 20 after the compression in the first compression unit 10, it is possible to reliably perform the connection work of the first electric wire 100 and the second electric wire 200. Thereby, it is possible to reduce the occurrence of connection failure.

  Further, when performing work such as transformer suspension, one of the wires can be inserted into the first compression portion 10 of the wire connection sleeve 1 and compressed on the ground. Thus, since it becomes possible to carry out separately the compression work to the wire connection sleeve 1 of the first wire and the compression work to the wire connection sleeve 1 of the second wire, depending on the work content It becomes possible to improve workability by the worker.

DESCRIPTION OF SYMBOLS 1 Wire connection sleeve 10 1st compression part 10a 1st compression part main body 12 Insertion hole 13 Through-hole 20 2nd compression part 20a Extension piece 22 Opening 24 Internal space 40 Compression fixing apparatus 50 Cap 100, 200 Electric wire

Claims (2)

A cylindrical first compression part having an insertion hole into which the tip of the first electric wire is inserted, and a second compression part having an opening formed in parallel to the insertion hole and into which the second electric wire is inserted And
One end of the insertion hole is open and the other end is closed;
The second compression part has a part of a side surface of the first compression part, and further includes an extending piece extending in an arc shape from the shared side surface,
The wire connection sleeve, wherein the opening is formed between a tip of the extending piece and the side surface. A wire connecting method for connecting two wires using the wire connecting sleeve according to claim 1,
Inserting the first electric wire from one end of the insertion hole and compressing the first compression portion to clamp the first electric wire in the first compression portion;
A step of inserting a second electric wire from the opening and compressing the second compression portion to clamp the second electric wire in the second compression portion.

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