JP2011083162A - Protective cover for ground line attaching portion and attaching method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protective cover for a ground line attaching portion, which can be easily positioned at a portion in which an insulating coating of an insulated electric cable is partially removed, is easily unstranded, hardly generates permanent distortion and can be easily wound around the insulated electric cable; and to provide an attaching method thereof. <P>SOLUTION: The protective cover 100 for a ground line attaching portion, on which an insulating sheet having predetermined elasticity is cylindrically wound has: a plurality of electric cable fitting ribs 20 closely contacting the circumferential surface of an electric cable portion 50 within the length of finishing covering the circumferential surface of the electric cable portion 50 in which the insulating coating of the insulated electric cable is partially removed subsequent to a winding start portion 10 of the cylindrically superimposed winding, and further has a saw-like boss 40 for facilitating the winding of the electric cable portion 50 within the length of one round of the electric cable portion 50 in which the insulating coating of the insulated electric cable is partially removed from a winding finish portion 30 of the superimposed winding having a rib shape. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a protective cover that again insulates a portion of an insulated wire from which the insulation coating has been partially removed, and more specifically, to a location where the insulation coating has been partially removed and a ground wire has been temporarily attached. The present invention relates to a protective cover for a grounding wire attachment point and a method for attaching the protective cover for repair.

  FIG. 4 is a structural diagram of a conventional protective cover for a grounding wire attachment location. FIG. 4B shows a longitudinal sectional view of a protective cover 200 for a conventional grounding wire attachment portion that is rolled up in a spiral shape, and has a plurality of wire fitting ribs 20 inside. 4a is a cross-sectional view taken along the line XX shown in FIG. 4b, and shows the positional relationship between the winding start portion 10, the plurality of wire fitting ribs 20, and the cover front end portion 60. It is shown.

  FIG. 5 is an attachment work process diagram showing the attachment work of the protective cover for the conventional ground wire attachment location. In FIG. 5a, the conventional ground wire attachment point protective cover 200 is attached by attaching a high-pressure glove 70 used for hot wire work and spreading the cover tip 60 rolled in advance in a spiral shape with a finger. The insulation coating of the insulated wire is removed, and the wire is inserted into the wire portion 50 to which the ground wire is connected.

  In FIG. 5b, after the cover front end portion 60 is spread with a finger and inserted into the electric wire portion 50 (arrow 3), the protective cover 200 is further unwound and wound around the electric wire portion 50 (arrow 4). As described above, in the work with the high-pressure glove 70 attached, the fingertips do not fit, and the protective cover 200 becomes hard in the cold season in winter. In addition, when the winding operation is performed, the electric wire portion 50 must be greatly expanded, so that permanent distortion occurs, the protective cover 200 is difficult to return to its original state, the tightening force is reduced, and a plurality of electric wires provided for preventing movement. There was a concern that the fitting rib 20 would not be in close contact with the wire portion 50 and the protective cover 200 would move.

  In Patent Literature 1, the insulated wire cover device 10 forms an insulating cylindrical body 30 by overlapping an insulating sheet having elasticity around the jumper wire 1 in the circumferential direction 39, and temporarily fixes the overlapping portion 31. In addition, an insulating adhesive is applied to the overlapping portion 31, and the temporary fastening structure 35 forms a recess 23 extending in the longitudinal direction of the insulating cylindrical body 30 on the inner surface of the outer insulating sheet 33 of the overlapping portion 31. There is a description that a convex part 24 extending in the longitudinal direction of the insulating cylindrical body 30 is formed on the outer surface of the inner insulating sheet 32 of the inner part 31 and can be fitted between the concave part 23 and the convex part 24.

JP 2007-14123 A

  The present invention has been made to solve such a problem, and an object of the present invention is to easily position the insulated wire in the part where the insulation coating is partially removed, and to unravel the protective cover. Provided is a protective cover for a grounding wire attachment location that can be easily wound around an insulated wire without causing permanent distortion, and a method for attaching the protective cover.

  The protective cover for the ground wire attachment location of the present invention is a protective cover for the ground wire attachment location for repairing a location where the insulation coating of the insulated wire is partially removed and the ground wire is temporarily attached. Within a length of time until the end of covering the circumferential surface of the electric wire part, in which the insulating sheet having a predetermined elasticity is formed by being rolled up in a cylindrical shape and the insulation coating is partially removed from the winding start part of the lap winding A plurality of wire fitting ribs closely contacting the circumferential surface of the wire portion, the winding end portion of the lap winding has a rib shape, and the insulation coating is partially provided from the winding end portion of the lap winding having the rib shape It has a saw-like boss within a length that goes around the circumferential surface of the electric wire part removed.

  The method for attaching the protective cover for the ground wire attachment location according to the present invention includes the protective cover for the ground wire attachment location for repairing the location where the ground wire is temporarily attached after the insulation coating of the insulated wire is partially removed. The protective cover for the ground wire attachment portion according to claim 1 is applied to the protective cover for the ground wire attachment portion, and the electric wire portion from which the insulation coating of the insulated wire has been removed is applied. , The step of pressing the winding end of the rib-shaped lap winding of the protective cover for the grounding wire attachment point, and the rotation while pressing the protective cover for the grounding wire attachment point against the wire part from which the insulation coating of the insulated wire has been removed Multiple steps formed within the length from the step of releasing the winding and covering the circumferential surface of the electric wire part from which the insulation coating has been partially removed from the winding start part of the overwrapping of the protective cover for the ground wire attachment point Electric wire If ribs, characterized in that it comprises the steps of: in close contact with the circumferential surface of the wire section.

  According to the present invention, it is easy to position the insulated wire to the part where the insulation coating is partially removed, and the protective cover is easily unraveled and does not cause permanent distortion. It is possible to provide a protective cover for a grounding wire attachment point and a method of attaching the same. This facilitates winter work with high-pressure gloves and eliminates the possibility of movement of the protective cover.

FIG. 3 is a structural diagram of a protective cover for a ground wire attachment point according to the present invention. The structure figure which shows the saw-like boss | hub of the protective cover for ground wire attachment locations of this invention. The attachment work process figure which shows the attachment work of the protective cover for ground wire attachment location of this invention. FIG. 6 is a structural diagram of a conventional protective cover for a grounding wire attachment point. The attachment work process figure which shows the attachment work of the protection cover for the conventional grounding wire attachment location.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a structural diagram of a protective cover for a grounding wire attachment location according to the present invention. FIG. 1 b shows a longitudinal sectional view of the protective cover 100 for a grounding wire attachment location in which an insulating sheet having a predetermined elasticity is rolled up in a cylindrical shape. Within the protective cover 100 for the ground wire attachment location, the electric wire portion 50 is within the length until the circumferential surface of the electric wire portion 50 from which the insulation coating of the insulated wire shown in FIG. The plurality of electric wire fitting ribs 20 are in close contact with the circumferential surface.

  FIG. 1a is a cross-sectional view taken along the line XX shown in FIG. 1b, showing a cross section taken along the line XX, and a plurality of winding start portions 10 in which an insulating sheet having a predetermined elasticity is wound in a cylindrical shape. The positional relationship of the electric wire fitting rib 20, the saw-like boss 40 that facilitates winding around the electric wire portion 50, and the winding end portion 30 of the rib-shaped lap winding is shown.

  FIG. 2 is a structural diagram showing a saw-shaped boss that facilitates winding around the electric wire portion of the protective cover for the ground wire attachment portion of the present invention. In FIG. 2a, the protective cover 100 for the ground wire attachment point makes a round around the circumferential surface of the electric wire portion 50 from which the insulation coating shown in FIG. 5a is partially removed from the winding end portion 30 of the lap winding having a rib shape. A saw-like boss 40 is provided within the length to be processed. FIG. 2 b is an enlarged view of the boss showing the shape of the saw-like boss 40. This boss saw shape can minimize slippage on the circumferential surface of the electric wire portion 50, so that the protective cover 100 can be easily wound around the electric wire portion 50 and movement of the protective cover 100 occurs. No fear of doing.

  FIG. 3 is an attachment work process diagram showing the attachment work of the protective cover for the ground wire attachment location of the present invention. FIG. 3a shows a step of pressing the winding end portion 10 of the lap winding in the shape of a rib of the protective cover 100 for the ground wire attachment portion against the electric wire portion 50 from which the insulating coating of the insulated electric wire has been removed. The end of the rib of the winding end portion 10 of the lap winding is hooked on the wire portion 50 where the insulation coating of the insulated wire is partially removed and the ground wire is temporarily attached. And press downward at an angle of about 45 °. Due to the shape effect of the ribs, the winding end portion 10 of the lap winding can be easily positioned, hooked and pressed on the electric wire portion 50.

  FIG. 3B shows a step of releasing the lap winding by applying rotation while pressing the protective cover 100 for the ground wire attachment portion against the electric wire portion 50 from which the insulation coating of the insulated electric wire has been removed. The protective cover 100 is rotated in the direction of the arrow 1 while pressing the protective cover 100 against the electric wire portion 50 to release the overlapping winding. Since the rib of the winding end portion 10 of the lap winding reliably catches the electric wire portion 50, the protective cover 100 is easily rotated in the direction of the arrow 1 to release the lap winding, and the boss 40 contacts the electric wire portion 50. start. In FIG. 3 c, the boss 40 further contacts the electric wire portion 50, and the frictional force with the electric wire portion 50 increases, so that the protective cover 100 can be easily attached to the electric wire portion 50.

  FIG. 3d shows a plurality of lines formed within a length until the circumferential surface of the electric wire part 50 from which the insulation coating has been partially removed is completely covered from the winding start part 10 of the lap winding of the protective cover 100 for the ground wire attachment point. This shows a step in which the electric wire fitting rib 20 is in close contact with the circumferential surface of the electric wire portion 50. At the stage where the protective cover 100 has made a circuit around the circumferential surface of the electric wire portion 50, the unwinding of the lap winding is only the portion of the electric wire fitting rib 20, and is easily unraveled. The remaining portion of the unwound wire fitting rib 20 is lifted by the rib of the winding end portion 10 of the lap winding and slid under the rib, whereby the attachment of the protective cover 100 is completed.

  As described above, according to the present invention, it is easy to position the insulated wire to the portion where the insulation coating is partially removed, and the protective cover can be easily unraveled, without causing permanent distortion, and easily. It is possible to provide a protective cover for a grounding wire attachment point that can be wound around an insulated wire and a method for attaching the protective cover. Accordingly, the protective cover 100 can be easily rotated and wound by the frictional force of the boss 40 by positioning with the ribs of the winding end portion 10 of the lap winding, so that the wire portion 50 is wound with the minimum unwinding amount. It becomes possible. For this reason, the work in winter wearing high-pressure gloves is facilitated, and there is no possibility that the protective cover moves.

DESCRIPTION OF SYMBOLS 10 Winding start part of lap winding 20 Electric wire fitting rib 30 Winding end part of lap winding 40 Saw-shaped boss
DESCRIPTION OF SYMBOLS 50 Electric wire part 60 Cover front-end | tip part 70 High voltage | pressure glove 100 Protective cover for grounding wire attachment locations by this invention 200 Conventional protective cover for grounding wire attachment locations

Claims (2)

A protective cover for a ground wire attachment location for repairing a location where the insulation coating of the insulated wire is partially removed and the ground wire is temporarily attached,
An insulating sheet having a predetermined elasticity is formed by being rolled in a cylindrical shape,
A plurality of wire fitting ribs that are in close contact with the circumferential surface of the wire portion within a length from the winding start portion of the lap winding to the end of covering the circumferential surface of the wire portion from which the insulating coating has been partially removed Have
The winding end portion of the lap winding has a rib shape,
A grounding wire mounting having a saw-like boss within a length that goes around the circumferential surface of the electric wire portion from which the insulating coating is partially removed from the winding end portion of the lap winding having the rib shape Protective cover for locations. A method of attaching a protective cover for a grounding wire attachment location for repairing a location where a grounding wire is temporarily attached after the insulation coating of the insulated wire is partially removed,
The protective cover for the ground wire attachment location according to claim 1 is applied to the protective cover for the ground wire attachment location,
A step of pressing a winding end portion of the lap winding in the shape of a rib of the protective cover for the ground wire attachment portion to the electric wire portion from which the insulation coating of the insulated electric wire has been removed;
Applying the rotation while pressing the protective cover for the ground wire attachment point against the portion where the insulation coating of the insulated wire has been removed, and releasing the overlapping winding;
A plurality of wire-fitting ribs formed within a length from the start of wrapping of the protective cover for the ground wire attachment point to the end of covering the circumferential surface of the wire portion from which the insulating coating has been partially removed Closely contacting the circumferential surface of the electric wire part;
A method of attaching a protective cover for a grounding wire attachment point, characterized by comprising:

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