JP2019155452A - Compression die and compression tool - Google Patents

Abstract

To provide a compression die which can prevent injury of a worker who assists crimping when multiple electric wires are connected to improve safety during the work.SOLUTION: A compression die (first compression die 120) according to the invention is attached to a compression tool 100 and compresses a sleeve 104. A structure of the compression die includes: a pedestal 130 fixed to a body part 110 of the compression tool 100; a compression part 140 which is slidably fixed to the pedestal 130 and compresses the sleeve 104; and an elastic member 150 which biases the compression part 140 to the sleeve 104.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a compression die for compressing a sleeve, and a compression tool to which such a compression die is attached.

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

  The transformer and the low-voltage main line are connected via a pull-up line. Specifically, on the transformer side, the secondary lead wire extends. Connect to this a pull-up line up to the low-voltage main line. When connecting them, the secondary lead wire and the pull-up wire coating are partly peeled to expose the core wire, and the core wire is inserted from both sides of a metal C-shaped cylindrical member called a sleeve and overlapped. Combine. Thereafter, the secondary lead wire and the pull-up wire are connected by crimping the sleeve.

  As a tool for crimping the above-described sleeve, the hydraulic compression tool of Patent Document 1 can be exemplified. 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.

  As the above-described sleeve, for example, a C-type sleeve hydraulic compression tool as in Patent Document 2 can be cited. In Patent Document 2, a C-shaped sleeve is disposed between a compression head and a piston, and a branch wire and an electric wire are inserted into the C-shaped sleeve. Then, by bringing the handle and the main body closer, the C-shaped sleeve is compressed by the compression head and the piston, and the branch wire and the wire are fixed.

Japanese Patent Laid-Open No. 11-25310 JP 2010-228083 A

  As described in Patent Document 2, the operation 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 performs the crimping operation of the sleeve.

  In order to prevent the finger of the other worker who performs the crimping operation from being caught by the compression tool, in the hydraulic compression tool of Patent Document 2, a support portion where 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 the injury of the worker (the other worker) who performs the crimping operation among the two workers engaged in the operation of connecting the plurality of electric wires can be prevented.

  However, although the technique of Patent Document 2 can prevent the injury of the worker who performs the crimping operation, the safety of one worker who is the worker who supports the sleeve and the worker who assists the crimping operation. Is not considered at all. For this reason, 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 can prevent injury of an operator who assists a crimping operation when connecting a plurality of electric wires, and a compression die that can improve safety during operation and It aims to provide a compression tool.

  In order to solve the above-mentioned problems, a typical structure of a compression die according to the present invention is a compression die that is attached to a compression tool and compresses a sleeve, and is slidable on a pedestal fixed to the compression tool and the pedestal And a compression portion that compresses the sleeve, and an elastic member that biases the compression portion against the sleeve.

  According to the above configuration, the sleeve is temporarily held by the compression portion when the compression portion is urged against the sleeve by the elastic member. Thereby, the worker who assists the compression work does not need to hold the sleeve when performing the compression work. For this reason, the worker does not get a finger caught during the compression work. Therefore, it is possible to prevent the injury of the worker who assists 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 a compression tool according to the present invention is a compression tool for compressing a sleeve, wherein the compression die is used for at least one of a pair of compression dies. . The components corresponding to the technical idea of the compression die described above and the description thereof can be applied to the compression tool.

  According to the present invention, it is possible to provide a compression die and a compression tool capable of preventing injury of an operator who assists a crimping operation when connecting a plurality of electric wires and improving safety during operation. be able to.

It is a figure which shows the compression tool concerning this embodiment. It is a figure explaining the compression die | dye shown in FIG. It is a figure explaining the usage method of the compression tool of this embodiment.

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

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

  A 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 110, and a first compression die 120 and a second compression die 160, which are two compression dies, are attached to the main body 110.

  FIG. 2 is a diagram illustrating the compression die shown in FIG. 2A is an overall perspective view of the compression die, and FIG. 2B is a cross-sectional perspective view of the first compression die 120 of FIG. 2A. 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 not a conventional product, that is, the one to which the present invention is not applied. Accordingly, in the present embodiment, the first compression die 120 will be described after the second compression die 160 is first described.

  A first compression die 120 and a 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 includes a sandwiching portion 162, a step portion 164, and a restriction groove 166.

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

  The restriction groove 166 is a groove formed on the outer peripheral surface 160 b of the second compression die 160. When a later-described restricting member is fitted in the restricting groove 166, the lateral movement of the second compression die 160 relative to the main body 110 is restricted.

  Next, the 1st compression die 120 which is a compression die of this embodiment is explained. As shown in FIG. 2A, the first compression die 120 includes a pedestal 130, a compression unit 140, and an elastic member 150. The pedestal 130 holds the compression unit 140 and the elastic member 150, and is fixed to the main body 110 (see FIG. 1) of the compression tool 100.

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

  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 112 a (see FIG. 1) of the main body 110 is engaged with the stepped portion 134. Thereby, the pedestal 130 and the first compression die 120 are attached to the main body 110.

  The restriction groove 136 is a groove formed on the outer peripheral surface 130 b of the pedestal 130. When a later-described restricting member is fitted in the restricting groove 136, lateral movement of the base 130 and 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 disposed 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 a pin 138 and compresses the sleeve 104. Specifically, the compression unit 140 includes a clamping unit 142, an insertion hole 144, and a notch 146. The clamping part 142 has a clamping 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 unit 140, and the pin 138 described above is inserted therethrough. The notch 146 is formed on a surface facing the pedestal 130, and the elastic member 150 is disposed here.

  The elastic member 150 is disposed from the notch 139 of the pedestal 130 to the notch 146 of the compression unit 140, and biases the compression unit 140 against the sleeve 104. In the present embodiment, a spring is illustrated as the elastic member 150. However, it is not limited to this, It is also possible to employ | adopt other known members as an elastic member.

  FIG. 3 is a diagram illustrating a method for using the compression tool 100 of the present embodiment. In order to facilitate understanding, FIGS. 3A to 3C show a state at the AA cross-sectional position of FIG. As described above, in the compression tool 100 of this embodiment, the pedestal 130 and the second compression die 160 in FIG. 2A are attached to the main body 110 by sliding and moving in the lateral direction with respect to the main body 110. . And the slide of the horizontal direction of the base 130 and the 2nd compression die 160 is controlled by the control member 170 shown to 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 portion 110, and the compression portion 140 of the first compression die 120 moves with respect to the main body portion 110. Specifically, as shown in FIG. 3A, when the compression unit 140 is pushed into 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 part 140 in which the slide hole 132 is inserted moves to the base 130. At this time, the elastic member 150 is in a contracted state.

  As shown in FIG. 3A, when the compression unit 140 is pushed toward the base 130, the plurality of electric wires 102 are inserted between the holding unit 162 of the second compression die 160 and the holding unit 142 of the compression unit 140. A sleeve 104 is disposed. When the compressed compression unit 140 is released, the elastic member 150 urges the compression unit 140 against the sleeve 104. As a result, as shown in FIG. 3B, the holding groove 142 a of the compression unit 140 comes into contact with the sleeve 104, and the sleeve 104 is held between the holding unit 162 of the second compression die 160 and the holding unit 142 of the compression unit 140. Is done.

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

  When the sleeve 104 is temporarily held by the second compression die 160 and the compression unit 140 as shown in FIG. 3B, oil is filled into the compression tool 100 by a hydraulic pump (not shown). Thereby, the base 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 comes into contact with the compression unit 140, and the pedestal 130 pushes the compression unit 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 unit 140, and the connection work of the plurality 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. Thus, the operator does not need to hold the sleeve 104 when performing the compression work. For this reason, an operator's finger is not pinched by compression part 140 and the 2nd compression die 160 at the time of compression work. Therefore, it is possible to prevent the injury of the worker who assists the compression work, and it is possible to improve the safety during the work.

  In addition, in this embodiment, the structure which applies this invention only to the 1st compression die 120 among the two (a pair) compression die with which the compression tool 100 is provided was 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. .

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within 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.

DESCRIPTION OF SYMBOLS 100 ... Compression tool, 102 ... Electric wire, 104 ... Sleeve, 110 ... Main-body part, 112b ... Engagement part, 120 ... 1st compression die, 130 ... Base, 130b ... Outer peripheral surface, 132 ... Slide hole, 134 ... Step part 136 ... Restriction groove, 138 ... Pin, 139 ... Notch, 140 ... Compression part, 140a ... Side face, 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 ... clamping portion, 162a ... clamping groove, 164 ... stepped portion, 166 ... regulating groove, 170 ... regulating member

Claims (2)

A compression die attached to a compression tool to compress the sleeve,
A base fixed to the compression tool;
A compression section that is slidably fixed to the pedestal and compresses the sleeve;
An elastic member for urging the compression portion against the sleeve;
A compression die comprising: A compression tool for compressing a sleeve,
A compression tool using the compression die according to claim 1 as at least one of a pair of compression dies.

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