JP7047505B2 - Compression dies and tools - Google Patents

Description

The present invention relates to a compression die that compresses a sleeve and a compression tool to which such compression die is attached.

The electricity generated at the power plant of the electric power company and transformed at the substation is transmitted through the high-voltage line stretched over the electric pole. After that, it is transformed from the voltage at the time of transmission (for example, 6600V) to the voltage used by the consumer (for example, 100V or 200V) by the transformer mounted on the utility pole, and is supplied to the consumer from the low voltage main line through the service line. ..

The transformer and the low voltage main line are connected via a pocket track. Specifically, on the transformer side, the secondary side lead wire extends. Connect the pull-up line to the low-voltage main line to this. When connecting them, the secondary lead wire and the pull-up wire coating are partially stripped off to expose the core wire, and the core wire is inserted from both sides of a metal C-shaped tubular member called a sleeve and stacked. Match. Then, by crimping the sleeve, the secondary lead wire and the pull-up wire are connected.

Examples of the tool for crimping the sleeve described above include the hydraulic compression tool of Patent Document 1. The hydraulic compression tool of Patent Document 1 is a so-called automatic compression tool in which hydraulic oil is sent from a hydraulic source (compressor) to operate a piston.

Examples of the sleeve described above include a C-type sleeve hydraulic compression tool as in Patent Document 2. In Patent Document 2, a C-shaped sleeve is arranged between the compression head and the piston, and the branch electric wire and the electric wire are inserted inside the C-shaped sleeve. Then, by bringing the handle and the main body close to each other, the C-shaped sleeve is compressed by the compression head and the piston, and the branch electric wire and the electric wire are fixed.

Japanese Unexamined Patent Publication No. 11-251030 Japanese Unexamined Patent Publication No. 2010-228083

As described in Patent Document 2, the work of connecting a plurality of electric wires using a compression tool is generally performed by two workers. At this time, one worker supports the sleeve so that the sleeve does not fall out of the compression tool. The other worker grips the handle and crimps the sleeve.

In order to prevent the finger of the other worker performing the crimping work from being caught in the compression tool, in the hydraulic compression tool of Patent Document 2, the support portion in which the handle is swingably supported in the main body is covered with the compression tool cover. ing. According to the technique of Patent Document 2, it is considered that it is possible to prevent the injury of the worker (the other worker) who performs the crimping work among the two workers engaged in the work of connecting a plurality of electric wires.

However, although the technique of Patent Document 2 can prevent the injury of the worker who performs the crimping work, the safety of the worker who supports the sleeve and the worker who assists the crimping work is maintained. No consideration is given to it. Therefore, if the two workers are not sufficiently coordinated, when the other worker tries to crimp the sleeve, the finger of one worker may be caught in the crimping tool.

In view of such a problem, the present invention has a compression die and a compression die capable of preventing injuries to workers who assist crimping work when connecting a plurality of electric wires and improving safety during work. It is intended to provide compression tools.

In order to solve the above problems, a typical configuration of the compression die according to the present invention is a compression die that is attached to a compression tool to compress the sleeve, and has a pedestal fixed to the compression tool and slidable to the pedestal. It is characterized by including a compression portion fixed to the sleeve and compressing the sleeve, and an elastic member for urging the compression portion against the sleeve.

According to the above configuration, the sleeve is temporarily held by the compression portion by urging the compression portion against the sleeve by the elastic member. As a result, the worker who assists the compression work does not need to hold the sleeve when performing the compression work. Therefore, the worker does not get his finger caught during the compression operation. Therefore, it is possible to prevent injuries to workers who assist the compression work, and it is possible to improve the safety during the work.

In order to solve the above problems, a typical configuration of the compression tool according to the present invention is a compression tool that compresses a sleeve, and is characterized in that the above compression dies are used for at least one of a pair of compression dies. .. The components corresponding to the above-mentioned technical idea in the compression die and the description thereof can also be applied to the compression tool.

INDUSTRIAL APPLICABILITY According to the present invention, there is provided a compression die and a compression tool capable of preventing an injury of a worker who assists a crimping operation when connecting a plurality of electric wires and enhancing safety during the operation. be able to.

It is a figure which shows the compression tool which concerns on this embodiment. It is a figure explaining the compression die shown in FIG. It is a figure explaining the use method of the compression tool of this embodiment.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiment are merely examples for facilitating the understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and the drawings, elements having substantially the same function and configuration are designated by the same reference numerals to omit duplicate description, and elements not directly related to the present invention are not shown. do.

FIG. 1 is a diagram showing a compression tool 100 according to the present embodiment. Hereinafter, the compression tool 100 shown in FIG. 1 will be described in detail, and the compression die (first compression die 120 described later) according to the present embodiment will also be described.

The compression tool 100 shown in FIG. 1 is a tool for compressing a sleeve 104 through which a plurality of electric wires 102 are inserted. As shown in FIG. 1, the compression tool 100 of the present embodiment has a main body portion 110, and two compression dies, a first compression die 120 and a second compression die 160, are attached to the main body portion 110.

FIG. 2 is a diagram illustrating the compression die shown in FIG. 2 (a) is an overall perspective view of the compression die, and FIG. 2 (b) is a cross-sectional perspective view of the first compression die 120 of FIG. 2 (a). Of the two compression dies shown in FIG. 2A, the first compression die 120 is a compression die to which the present invention is applied, and the second compression die 160 is a conventional product, that is, the present invention is not applied. Therefore, in the present embodiment, the second compression die 160 will be described first, and then the first compression die 120 will be described.

The first compression die 120 and the second compression die 160 shown in FIG. 2A are attached to the main body 110 of the compression tool 100 to compress the sleeve 104. The second compression die 160 is a semi-cylindrical member and has a holding portion 162, a step portion 164, and a regulation groove 166.

The sandwiching portion 162 has a sandwiching groove 162a through which the sleeve 104 is inserted. The step portion 164 is a step formed at the boundary between the flat surface 160a and the outer peripheral surface 160b of the second compression die 160. By sliding the second compression die 160 laterally with respect to the main body 110, the engaging portion 112b (see FIG. 1) of the main body 110 engages with the step portion 164. As a result, the second compression die 160 is attached to the main body 110.

The regulation groove 166 is a groove formed on the outer peripheral surface 160b of the second compression die 160. By fitting the regulating member described later into the regulating groove 166, the lateral sliding movement of the second compression die 160 with respect to the main body 110 is restricted.

Next, the first compression die 120, which is the compression die of the present embodiment, will be described. As shown in FIG. 2A, the first compression die 120 has a pedestal 130, a compression portion 140, and an elastic member 150. The pedestal 130 holds the compression portion 140 and the elastic member 150, and is fixed to the main body portion 110 (see FIG. 1) of the compression tool 100.

The pedestal 130 has a slide hole 132, a step portion 134, and a regulation groove 136. The slide hole 132 is an elongated hole formed at a position corresponding to the insertion hole 144 of the compression portion 140 described later. By inserting the pin 138 into the insertion hole 144 of the slide hole 132 and the compression unit 140, the compression unit 140 is slidably fixed to the pedestal 130.

The step portion 134 is a step formed above and below each of the pair of slide holes 132. By sliding the pedestal 130 laterally with respect to the main body 110, the engaging portion 112a (see FIG. 1) of the main body 110 engages with the step portion 134. As a result, the pedestal 130 and thus the first compression die 120 are attached to the main body 110.

The regulation groove 136 is a groove formed on the outer peripheral surface 130b of the pedestal 130. By fitting the regulating member described later into the regulating groove 136, the lateral sliding movement of the pedestal 130 and thus the first compression die 120 with respect to the main body 110 is restricted. Further, as shown in FIG. 2B, a notch 139 in which the elastic member 150 is arranged is formed on the surface of the pedestal 130 facing the compression portion 140.

The compression unit 140 is slidably fixed to the pedestal 130 by the pin 138 to compress the sleeve 104. In particular, the compression section 140 has a pinch section 142, an insertion hole 144 and a notch 146. The sandwiching portion 142 has a sandwiching groove 142a through which the sleeve 104 is inserted. The insertion hole 144 is a hole formed in the side surface 140a of the compression portion 140, through which the pin 138 described above is inserted. The notch 146 is formed on a surface facing the pedestal 130, and the elastic member 150 is arranged therein.

The elastic member 150 is arranged from the notch 139 of the pedestal 130 to the notch 146 of the compression portion 140, and urges the compression portion 140 against the sleeve 104. In this embodiment, a spring is exemplified as the elastic member 150. However, the present invention is not limited to this, and other known members can be adopted as the elastic member.

FIG. 3 is a diagram illustrating a method of using the compression tool 100 of the present embodiment. For ease of understanding, FIGS. 3 (a) to 3 (c) show the state of FIG. 2 (a) at the AA cross-sectional position. As described above, in the compression tool 100 of the present embodiment, the pedestal 130 and the second compression die 160 of FIG. 2A are attached to the main body 110 by sliding them laterally with respect to the main body 110. .. Then, the lateral slide of the pedestal 130 and the second compression die 160 is restricted by the restricting member 170 shown in FIG. 3 (a).

In the compression tool 100 of the present embodiment, the second compression die 160 does not move with respect to the main body 110, and the compression portion 140 of the first compression die 120 moves with respect to the main body 110. Specifically, first, as shown in FIG. 3A, when the compression portion 140 is pushed toward the pedestal 130, the pin 138 moves in the slide hole 132 of the pedestal 130, and the insertion hole 144 (FIG. 2B). The compression portion 140 through which the slide hole 132 is inserted moves toward the pedestal 130. At this time, the elastic member 150 is in a contracted state.

When the compression portion 140 is pushed toward the pedestal 130 as shown in FIG. 3A, a plurality of electric wires 102 are inserted between the sandwiching portion 162 of the second compression die 160 and the sandwiching portion 142 of the compression portion 140. The sleeve 104 is placed. Then, when the compressed portion 140 pushed in is released, the elastic member 150 urges the compressed portion 140 against the sleeve 104. As a result, as shown in FIG. 3B, the sandwiching groove 142a of the compression portion 140 abuts on the sleeve 104, and the sleeve 104 is sandwiched by the sandwiching portion 162 of the second compression die 160 and the sandwiching portion 142 of the compression portion 140. Will be done.

According to the above configuration, by urging the compression portion 140 against the sleeve 104 by the elastic member 150, the sleeve 104 can be temporarily held by being sandwiched by the second compression die 160 and the compression portion 140. Therefore, the worker who assists the compression work does not need to hold the sleeve 104.

As shown in FIG. 3B, after the sleeve 104 is temporarily held by the second compression die 160 and the compression portion 140, the inside of the compression tool 100 is filled with oil by a hydraulic pump (not shown). As a result, the pedestal 130 of the first compression die 120 gradually approaches the second compression die 160. The elastic member 150 is compressed as it approaches, the pedestal 130 eventually comes into contact with the compression portion 140, and the pedestal 130 further pushes the compression portion 140. Then, as shown in FIG. 3C, the sleeve 104 is compressed by the sandwiching portion 162 of the second compression die 160 and the sandwiching portion 142 of the compression portion 140, and the connection work of the plurality of 102 is completed.

As described above, in the compression tool 100 of the present embodiment, the sleeve 104 is temporarily held by the compression unit 140 and the second compression die 160 as shown in FIG. 3 (b), and is therefore shown in FIG. 3 (c). It is not necessary for the worker to hold the sleeve 104 when performing the compression work. Therefore, the operator's fingers are not pinched by the compression unit 140 and the second compression die 160 during the compression operation. Therefore, it is possible to prevent injuries to workers who assist the compression work, and it is possible to improve the safety during the work.

In this embodiment, a configuration in which the present invention is applied only to the first compression die 120 among the two (pair) compression dies included in the compression tool 100 is illustrated. However, the present invention is not limited to this, and the present invention may be applied to the second compression die 160, or the present invention may be applied to both the first compression die 120 and the second compression die 160. ..

Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such an embodiment. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the claims, which naturally belong to the technical scope of the present invention. Understood.

The present invention can be used as a compression die for compressing a sleeve and a compression tool to which such a compression die is attached.

100 ... compression tool, 102 ... electric wire, 104 ... sleeve, 110 ... main body, 112b ... engaging part, 120 ... first compression die, 130 ... pedestal, 130b ... outer peripheral surface, 132 ... slide hole, 134 ... stepped part, 136 ... Restriction groove, 138 ... Pin, 139 ... Notch, 140 ... Compression part, 140a ... Side surface, 142 ... Holding part, 142a ... Holding groove, 144 ... Insertion hole, 146 ... Notch, 150 ... Elastic member, 160 ... Second Compression die, 160a ... flat surface, 160b ... outer peripheral surface, 162 ... sandwiching portion, 162a ... sandwiching groove, 164 ... stepped portion, 166 ... regulating groove, 170 ... regulating member

Claims (2)

A compression die that is attached to a compression tool to compress the sleeve.
The pedestal fixed to the main body of the compression tool and
A compression unit that is slidably fixed to the pedestal and compresses the sleeve,
An elastic member that urges the compression portion against the sleeve,
A pair of insertion holes, which are holes formed on both sides of the elastic member on the side surface of the compression portion,
Equipped with
The pedestal portion includes a pair of slide holes which are elongated holes formed at positions corresponding to the pair of insertion holes, and a pair of step portions which are steps formed above and below each of the pair of slide holes. Have,
The pair of stepped portions are compression dies characterized in that they engage with an engaging portion provided on the main body portion . A compression tool that compresses the sleeve
A compression tool according to claim 1, wherein the compression die according to claim 1 is used for at least one of the pair of compression dies.

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