JP2018102032A - Coating stripper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating stripper which can easily peel off a coating and can reduce a work amount.SOLUTION: A coating stripper 1 for stripping a coating member of an insulator in an electric wire, includes: a main body portion 10 having a wire insertion hole 11 into which an electric wire is inserted; and a plurality of blades 30, provided in a body, with each distance becoming shorter as going in a direction in which the electric wire is inserted, having a blade portion at an end portion in the direction in which the electric wire is inserted, the blade portion peeling off the coating member when pulled out in a direction opposite to the direction in which the electric wire is inserted.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a coating stripper.

  For example, an electric wire stripper provided with a holding mechanism that can hold the stripped coating waste is known. (For example, patent document 1).

JP 2000-288271 A

  The electric wire stripping device according to Patent Document 1 can spirally strip the insulated wire coating. The electric wire stripper includes a holding mechanism that holds the covering scraps that have been spirally peeled off. Thereby, since covering waste is collected without falling on the ground, it is possible to ensure the problem of dust and the safety of workers on the ground.

  However, the electric wire stripper according to Patent Document 1 is configured to remove the coating by rotating the blade. That is, since the work for rotating the blade is required, the work amount may increase.

  The main present invention that solves the above-mentioned problems is a coating stripper that strips a coating member of an insulator in an electric wire, and is provided inside a main body portion having an electric wire insertion hole into which the electric wire is inserted, and the main body portion. Each of the distances becomes shorter as it goes in the direction in which the electric wire is inserted, and has a blade at the end in the direction in which the electric wire is inserted, and is pulled out in a direction opposite to the direction in which the electric wire is inserted. And a plurality of blades that peel off the covering member when the blade portion is removed.

  Other features of the present invention will become apparent from the accompanying drawings and the description of this specification.

  According to the present invention, since the coating can be easily peeled off by inserting and pulling out the electric wire, the amount of work can be reduced.

It is a perspective view which shows the coating stripping tool which concerns on this embodiment. It is a figure which shows the state which looked at the coating stripping tool which concerns on this embodiment toward + X direction. It is a figure which shows the state which looked at the inside of the main-body part of the coating stripper which concerns on this embodiment toward the -X direction. It is a perspective view which shows the blade of the coating stripping tool which concerns on this embodiment. It is a figure which shows the state which looked at the AA cross section of the coating stripping tool which concerns on this embodiment toward + Z direction. It is a figure which shows the operation state which looked at the AA cross section of the operation | movement condition of the coating stripper which concerns on this embodiment toward the + Z direction.

  At least the following matters will become apparent from the description of this specification and the accompanying drawings. In the following description, the X axis is an axis along the longitudinal direction of the main body, the Y axis is an axis orthogonal to the X axis and the Z axis, and the Z axis is an axis orthogonal to the X axis and the Y axis. 1 to 6, the same members will be described with the same numerals. Further, the direction along the X axis may be referred to as “X direction”, the direction along the Y axis may be referred to as “Y direction”, and the direction along the Z axis may be referred to as “Z direction”. Further, in each of “X direction”, “Y direction”, and “Z direction”, “+” may be attached to the + side, and “−” may be attached to the − side.

=== Configuration ===
Hereinafter, the structure of the coating stripping tool 1 according to the present embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a perspective view showing a coating stripping tool 1 according to the present embodiment. FIG. 2 is a diagram illustrating a state in which the stripping tool 1 according to the present embodiment is viewed in the + X direction. FIG. 3 is a diagram illustrating a state in which the inside of the main body portion 10 of the coating stripping tool 1 according to the present embodiment is viewed in the −X direction. FIG. 4 is a perspective view showing the blade 30 of the coating stripping tool 1 according to the present embodiment. FIG. 5 is a diagram illustrating a state in which the AA cross section of the coating stripping tool 1 according to the present embodiment is viewed in the + Z direction.

  The coating stripping tool 1 is a tool for stripping the coating 101 of the electric wire 100 by using the force for pulling out the electric wire 100 by inserting the tip of the electric wire 100 into the insertion hole 11. The electric wire 100 basically assumes a high voltage underline, but is not limited to this, and includes a low voltage electric wire and a high voltage electric wire. The covering stripping tool 1 is basically connected to the tip of an existing operation rod (not shown) and used for indirect hot wire work. The stripping tool 1 is not limited to the use of indirect hot wire work, but may be used for work of stripping the coating 101 of the electric wire 100 in a no-voltage state. The covering stripping tool 1 includes a main body portion 10, a connecting portion 20, a blade 30, and a spring 40.

<< Main body 10 >>
The main body 10 is a member that has a blade 30 therein and into which the electric wire 100 is inserted. The main body 10 is formed of, for example, an insulating plastic material and has a substantially quadrangular prism shape with a hollow inside. The main body 10 has an insertion hole 11 on the −X end face. The insertion hole 11 is a part into which the electric wire 100 is inserted. The insertion hole 11 is a hole having a substantially circular shape having an extent to which the electric wire 100 can be inserted, for example. The main body 10 has a connecting portion 20 (described later) connected and fixed to the + X end face. The main body 10 has an extraction portion 12 on any of the surfaces surrounding the surface including the insertion hole 11. The take-out portion 12 has a structure that can be opened and closed, and is a portion that takes out the coating 101 that is peeled off and left inside the main body portion 10. When the extraction part 12 opens, it is provided in the part close | similar to the connection part 20 so that the blade 30 mentioned later may not be exposed from the window.

  In addition, in the above, although the main-body part 10 was described as having a substantially quadrangular prism shape, it is not limited to this. The shape may be a substantially cylindrical shape or a substantially polygonal column shape as long as the insertion hole 11 and the extraction portion 12 can be provided.

  In addition, in the above, although the main-body part 10 was described as the connection part 20 being connected and fixed to + X end surface, it does not limit the place connected. For example, it may be connected to the -Y end surface and may be connected and fixed to a portion that does not overlap the insertion hole 11 and the extraction portion 12.

<< connecting part 20 >>
The connecting portion 20 is a member that is detachably connected to the tip of an insulating operation rod (not shown). The connecting portion 20 is formed of, for example, a plastic material, and has, for example, a hollow substantially cylindrical shape with one end opened. The connecting portion 20 has a substantially T-shaped cut 21 on the peripheral surface. The substantially T-shaped notch 21 is fitted with a protrusion (not shown) at the tip of the insulating operating rod. The connecting portion 20 is fixedly connected to the main body portion 10 at the other end opposite to the open one end.

  In addition, although it described as having the substantially T-shaped cut 21 in the above, it does not need to have the substantially T-shaped cut 21. This is because when the operator does not use it by fitting it to the tip of the insulating operation rod, it is sufficient that the operator can operate it by directly grasping the main body.

<< blade 30 >>
The blade 30 is a member that bites into the covering 101 of the electric wire 100 inserted into the main body 10 and peels off the covering 101 when the electric wire 100 is pulled out. As shown in FIG. 4, the blade 30 is formed of, for example, a stainless steel material, and has a flat plate shape that is curved along the peripheral surface of the electric wire 100 inserted into the main body 10, for example.

  As shown in FIG. 2, for example, one end of the blade 30 is fixedly connected to the inner surface of the main body 10 along the periphery of the insertion hole 11 of the main body 10. As a method of fixed connection, for example, a groove (not shown) is provided around the insertion hole 11 and one end of the blade 30 is engaged with the groove. The blade 30 is formed of a small blade 31 having a sharp portion at the other end. The blade 30 is provided so that the blade 30 moves away from the inner surface of the main body 10 as it goes from one end to the other end. For example, four blades 30 are arranged at substantially equal intervals, and the small blades 31 are provided so as to contact the entire circumference of the peripheral surface of the inserted electric wire 100. That is, the four blades 30 are arranged so as to approach toward the outer peripheral surface of the electric wire 100 into which the respective blades 30 facing each other are inserted in the + X direction from one end.

  In addition, in the above, although the blade 30 was described as stainless steel, it is not limited to this. For example, it may be made of steel, as long as it is a hard material having a sharply shaped small blade that bites into the coating 101.

  In the above description, the blade 30 is described as engaging one end, but the present invention is not limited to this. For example, one end of the blade 30 and the inner surface of the main body 10 may be fixed with an adhesive.

  In the above description, four blades 30 are described as being arranged at equal intervals, but the present invention is not limited to this. For example, the number of blades 30 may be two, and in this case, each blade 30 is arranged along the insertion hole 11 with a 180-degree curve. That is, the number of blades 30 is not limited.

<< Spring 40 >>
The spring 40 is a member that elastically biases the blade 30 in a direction away from the inner surface of the main body 10. The spring 40 is formed of a hard steel wire, for example, and is a compression coil spring, for example. At least one spring 40 is provided for one blade 30.

  As shown in FIG. 3, the spring 40 has one end connected to the inner surface of the main body 10 and the other end connected to the blade 30. The spring 40 elastically biases the blade 30 toward the electric wire 100, and the other end is connected to a portion close to the tip of the blade 30 so that the small blade 31 bites into the coating 101 of the electric wire 100.

  As shown in FIG. 5, when the electric wire 100 is inserted, a force is applied to the spring 40 from the blade 30 toward the inner surface of the main body. That is, the spring 40 acts in a direction to contract against the elastic force.

  In the above description, at least one spring 40 is provided for one blade 30, but the present invention is not limited to this. For example, it may be composed of two or more.

  In addition, in the above, although the coating stripping tool 1 was described as having the spring 40, it is not limited to this. For example, the spring 40 may not be provided. In that case, the blade 30 is relatively short, has elasticity, and is arranged so as to go to the outer peripheral surface of the electric wire as it goes in the direction in which the electric wire 100 is inserted. . That is, the blade 30 is provided so as to press the small blade 31 toward the peripheral surface of the electric wire 100 by its own elastic force when the electric wire 100 is inserted.

=== Operation ===
Hereinafter, the operation of the stripping tool 1 in the present embodiment will be described with reference to FIGS. 6 (A) to 6 (C) are diagrams illustrating an operation state of the operation state of the stripping tool 1 according to the present embodiment as viewed in the + Z direction along the AA cross section.

  First, the worker confirms the electric wire 100 (hereinafter, referred to as “target electric wire 100”) from which the coating 101 is peeled off. The worker connects the tip of an insulating operating rod (not shown) to the connecting portion 20 of the coating stripper 1. The connection to the insulating operating rod is performed by fitting a projection (not shown) at the tip of the insulating operating rod into the substantially T-shaped groove of the connecting portion 20. The operator confirms that the tip of the operating rod and the covering stripper 1 are connected and cannot be removed. Thereby, the worker can perform the indirect hot-line work using the operation rod.

  Next, the worker inserts the tip of the target electric wire 100 into the insertion hole 11 of the coating stripper 1. As shown in FIG. 6A, the worker inserts the tip of the target electric wire 100 into the insertion hole 11 of the coating stripper 1. As shown in FIG. 6B, when the target electric wire 100 is inserted to the back (+ X direction) of the main body 10, the blade 30 receives a force from the target electric wire 100 and moves toward the inner surface of the main body 10. . As the blade 30 moves, a force is applied to the spring 40 from the blade 30 toward the inner surface of the main body. That is, the spring 40 acts in a direction to contract against the elastic force. Therefore, the spring 40 is elastically biased toward the target electric wire 100. The blade 30 is elastically biased from the spring 40, so that the small blade 31 bites into the coating 101 of the target electric wire 100.

  Next, the worker pulls out the target electric wire 100 from the covering stripper 1. As shown in FIG. 6C, since the small blade 31 bites into the coating 101 of the target electric wire 100, the coating 101 on the + X side is peeled off from the target electric wire 100 than the portion where the small blade 31 bites. . The worker checks whether the covering 101 of the extracted target electric wire 100 is peeled off. The worker takes out the covering 101 of the target electric wire 100 that has been peeled off from the take-out portion 12.

=== Summary ===
As described above, the coating stripping tool 1 according to the present embodiment is the coating stripping tool 1 that strips the insulating coating 101 in the electric wire 100, and has the main body 10 having the insertion hole 11 into which the electric wire 100 is inserted. And each distance is shortened as it goes in the direction in which the electric wire 100 is inserted, and has a small blade 31 at the end in the direction in which the electric wire 100 is inserted. And a plurality of blades 30 from which the small blade 31 peels off the coating 101 when pulled out in the direction opposite to the insertion direction. According to this embodiment, even when the electric wire 100 is curved, the shape of the inserted electric wire 100 is corrected to a straight line, and is not affected by the bending, and the coating 101 of the electric wire 100 is not affected. The blade 30 bites in and the coating 101 can be peeled off.

  Moreover, in the coating stripping tool 1 according to the present embodiment, the main body unit 10 includes an extraction unit 12 for removing the stripped coating 101. According to the present embodiment, since the peeled coating 101 can be easily taken out to the outside, work efficiency is improved.

  Moreover, in the coating stripping tool 1 according to the present embodiment, the main body portion 10 includes a connecting portion 20 that is connected to an insulating operation rod on the side opposite to the insertion hole 11. According to this embodiment, since an insulative operating rod can be used, indirect hot-line work can be performed.

  Moreover, in the coating stripping tool 1 according to the present embodiment, the blade 30 has a curved shape along the outer peripheral surface of the electric wire 100. According to this embodiment, in the electric wire 100, it is possible to reduce the unstrip of the coating 101, so that the work efficiency can be improved.

  Moreover, the coating stripping tool 1 according to the present embodiment further includes a spring 40 that elastically biases the blade 30 in a direction toward the outer peripheral surface of the electric wire 100. According to this embodiment, since the blade 30 can easily bite into the covering 101 of the electric wire 100, work efficiency can be improved.

  In addition, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Cover stripping tool 10 Main-body part 11 Insertion hole 20 Connection part 30 Blade 31 Small blade 100 Electric wire 101 Covering

Claims (5)

A stripping tool for stripping off a coating member of an insulator in an electric wire,
A main body having an electric wire insertion hole into which the electric wire is inserted;
Each distance is shortened as it goes in the direction in which the electric wire is inserted, provided in the main body, and has an edge in the direction in which the electric wire is inserted, and the electric wire is inserted. A plurality of blades by which the blade part peels off the covering member when pulled out in a direction opposite to the direction;
The stripping tool characterized by comprising. The said main-body part is further equipped with the extraction part for removing the said coating | coated member stripped off, The coating stripping tool of Claim 1 characterized by the above-mentioned. The said main-body part is further provided with the connection part connected with an insulating operating rod on the opposite side to the said electric wire insertion hole, The stripping tool of Claim 1 or Claim 2 characterized by the above-mentioned. The said blade exhibits the shape curved along the outer peripheral surface of the said electric wire. The covering stripping tool as described in any one of Claim 1 thru | or 3 characterized by the above-mentioned. The covering stripping tool according to any one of claims 1 to 4, further comprising a spring that elastically biases the blade in a direction toward the outer peripheral surface of the electric wire.

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