JPH0729692Y2 - Insulated wire needle electrode trace cover - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover for easily and easily repairing an exposed portion of a core wire by a through hole formed in an insulation coating of an insulated wire in a bypass construction method of an overhead wire.

[0002]

2. Description of the Related Art Conventionally, in the case of an accident such as an overhead line, it is necessary to put a work site in a non-voltage state for safety, but it is impossible to stop power transmission to a work site other than the work site. By-pass construction is being carried out according to the following procedure across the line. The insulated wire is stripped off at two predetermined places to expose the core wire. Attach the clamp connected to the exposed part of the core wire by the bypass cable and turn on the power. Open the division switch at the construction site and put the construction site into a non-voltage state before performing the construction. When the work is completed, remove the non-voltage condition, turn on the power, and remove the bypass cable. Repair the exposed wire of the insulated wire so that it is not dangerous. Of these procedures, the first peeling of the insulation coating and the last repair are particularly dangerous, so a method of energizing the electrodes by screwing the electrodes through the insulation coating without peeling the insulation coating is performed. However, in this method as well, a through hole remains in the screwed-in portion of the electrode and the core wire is exposed, so it is necessary to repair this. Then, the insulating cover used for such a purpose has a cover main body provided with an opening having a width narrower than the diameter of the insulated electric wire to be mounted by dividing the upper part of the cylindrical body in the longitudinal direction, and a detachable knob for the cover main body. For example, the one constructed by combining the members is an actual flatbed 2
It is known from JP-A-102618.

[0003]

As shown in the drawings, the embodiments and the operation thereof, the knob member has a substantially T-shaped cross section and is composed of a knob and a mounting portion. It is attached to the outer wall of the cover body by the adhesive sheet provided on the surface, the knob member is sandwiched between the cots, the cover body is brought into contact with the insulated wire, and when it is pushed in as it is, the mounting opening of the cover body is expanded by the insulated wire Then installed,
Next, it is used to twist and remove the knob member, but this is because the knob member is formed separately from the cover body and is detachably attached, so when pushing the cover body into the insulated wire However, there is a problem in terms of workability in that when the pressing member is pressed with a strong force, the picking member may be displaced or separated, which makes mounting on the insulated wire extremely difficult. Therefore, the object of the present invention is to solve the problem of workability when mounting on such an insulated wire, and after mounting, it is possible to easily remove the knob piece integrally formed with the cover body by twisting it. The present invention provides an insulating cover that can be used.

[0004]

An embodiment of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 is a cover main body formed of an insulating plastic material. The upper surface of the cylindrical body is divided into straight lines in the longitudinal direction, and an opening 2 having a width narrower than the diameter of the insulated electric wire 8 to be mounted is provided. Ribs 3 and 3 that bend outward are provided at both edges of the opening 2. The ribs 3 make it easy to insert the opening 2 into the insulated electric wire 8 and maintain the strength after the insertion into the insulated electric wire 8. The inner diameter of the inner wall 4 of the cover body 1 is set to be slightly larger than the diameter of the insulated electric wire 8. An insulating adhesive 5 is applied to almost the entire inner wall 4 to a predetermined thickness, and a release paper (not shown) is applied to the surface. ) Is applied to protect it. Reference numeral 6 denotes a knob piece projecting in the center of the outer wall at a position facing the opening 2 of the cover main body 1. The knob piece 6 is formed in a rectangular plate shape, and a root 7 having a small cross-sectional area is easily provided by screwing. ing.

The use of the cover A of the present invention thus formed will be described. As shown in FIG. 4, the insulated wire 8 has a through hole 11 which is a trace of the needle electrode that penetrates the insulating coating 9 and reaches the core wire 10. When the cover A is attached to close the through hole 11, The gripping piece 6 is finally sandwiched between the gripping tools 12 having such an insulating handle, and the through hole 1
When the opening 2 of the cover body 1 is brought into contact with the insulated electric wire 8 and pushed in around the center 1, the opening 2 is expanded and the cover body 1 is mounted on the insulated electric wire 8 and the adhesive 5 applied to the inner wall 4 is used. The through hole 11 is closed and the repair is completed. Next, when the knob 6 is twisted, the root 7 having a small cross-sectional area is twisted and cut, and the knob 6 can be easily separated from the cover body 1.

As shown in FIG. 5, the knob 6 has a through hole 13
Is an example in which the cover A is installed.
When the picking piece 6 is twisted off after being attached to the insulated electric wire 8, the hooking piece can be passed through the through hole 13 and twisted to separate the picking piece 6 more easily than that of the above embodiment. .

FIG. 6 is an enlarged cross-sectional view of an essential part of an embodiment in which the root 7 of the knob 6 is formed in a rhombic cross section.
Although this embodiment has a high strength in parallel, the knob 6 is easier to cut when twisted, so the knob 6 can be more easily separated.

[0008]

As described above, according to the present invention, since the knob piece is formed integrally with the cover body,
When installing on an insulated wire, it can be installed reliably and with good workability.
Further, this workability is synergistically improved by the elasticity of the ribs provided along both edges of the opening. Further, the knob can be easily twisted and cut off to be removed after being attached to the insulated wire.

[Brief description of drawings]

FIG. 1 is a perspective view of a cover.

FIG. 2 is a side view of a cover.

FIG. 3 is a front view of a cover.

FIG. 4 is a perspective view illustrating a state in which a cover is attached to an insulated wire.

FIG. 5 is a front view of a cover showing another embodiment.

6 is an enlarged cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 Cover Main Body 2 Opening 3,3 Rib 4 Inner Wall 5 Adhesive 6 Picking Piece 7 Root 8 Insulated Wire

Claims (3)

[Scope of utility model registration request] 1. A cover main body is provided in which an upper surface of a cylindrical body is divided in a longitudinal direction, an opening having a width narrower than a diameter of an insulated electric wire to be mounted is provided, and a rib bending outwardly is extended along the opening. A needle electrode trace cover for an insulated wire, in which an insulating adhesive is applied to the inner wall surface of the cover body, and a knob easily protruding by screwing is provided on the lower surface of the outer wall of the cover body. 2. The needle electrode trace cover for an insulated wire according to claim 1, wherein a through hole is formed in the knob piece. 3. The needle electrode trace cover for an insulated wire according to claim 1, wherein a root for connecting the knob to the cover body is formed in a rhombic cross section.