JPH06276640A - Covering mending cover for electric wire - Google Patents

Abstract

PURPOSE:To provide a covering mending cover which is used to mend a spot where an insulating covering is stripped off and the core is exposed to connect a by-pass electric wire, by a by-pass construction method for stringing work. CONSTITUTION:A pair of electric-wire covering cover bodies 1 has required inside diameter, is made out of synthetic resin material, and is composed of half cylindrical substances 2 split linearly in the longitudinal direction and having protruding segments 3a and 3b at their cut end edges facing each other. And, electric-wire grasping parts 4 fittable to the outside diameter of the core of an insulated electric wire A are provided at the centers of the inner peripheral surfaces of the half cylinders 2. Besides, the protruding segments 3a and 3b have protruding streaks 5 and recessed grooves 6 respectively provided in the centers facing each other, to secure a creeping distance, and have hooking claws 9 and joining holes 10 for joining them in a freely joinable or removable way, provided at both end parts facing each other. Besides, flat recessed parts 11 into which a flat board such as a square-bar standard screwdriver, etc., can be inserted are provided in the intermediate parts between the hooking claws 9 and the joining holes 10 and between the protruding streaks 5 and the recessed grooves 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a so-called bypass law in which work is carried out without interrupting the electric current during overhead wire construction. In order to connect a bypass electric wire, the insulation coating is stripped to leave the core wire bare and the bypass wire is used. The present invention relates to an electric wire covering repair cover for repairing an electric wire by connecting an electric wire, performing an overhead wire work, and removing the bypass electric wire after the completion of the work and attaching the bypass wire to the exposed portion of the core wire.

[0002]

2. Description of the Related Art Conventionally, such electric wire covering / repairing covers having various structures have been used, but all of them are fixed so that the cover attached to the electric wire does not move after repairing. However, if we look at this from the standpoint of removal for repair work, which is a contradictory relationship, the more the function of the former is improved, the more difficult it is to remove the latter. It will be.

[0003]

As described above, the conventional electric wire covering / recovering cover does not take into consideration attachment during use or detachment during reuse, and it is a high place with poor scaffolding, and insulating gloves. A cover that overcomes adverse conditions such as having to wear a work piece, is easy to remove during re-construction, is easy to install when installing for repair, and does not move after repairing Is strongly desired. Therefore, the present invention intends to provide a coated repair cover for an electric wire which can satisfy all such demands.

[0004]

A cover repair cover for electric wire according to the present invention has a required inner diameter and length, and a protruding piece on a cut edge of a half-divided cylinder which is linearly divided in a longitudinal direction. The main body of the cover is made of synthetic resin, and the wire clamping part that matches the outer diameter of the core of the insulated wire is provided in the center of the inner peripheral surface of the cylindrical body. In addition to the concavo-convex portions to be secured, opposite end portions are provided with engaging portions that engage with each other in a disengageable manner, and a flat plate such as a flat-blade screwdriver is provided between these engaging portions and the irregular portion. It is configured by providing a flat recess that can be inserted.

[0005]

According to the electric wire covering and repairing cover of the present invention having the above-described structure, after the completion of the overhead wire work, the insulating main body is clamped by the insulating mat when the insulating covering of the overhead wire is attached to the peeling point, and the projecting pieces of the cover main body are separated from each other. Expand and insert the widened cut edge into the overhead wire, and position it so that the wire holding part provided on the cover body matches the peeling point of the insulating coating provided on the overhead wire. When the insulating coatings on both ends of the peeling point are clamped by the electric wire clamping part and the insulating mat is once removed from the cover body, the expansion of the protruding piece of the cover body is released. Then, if the central portion of the protruding piece is sandwiched from the ground with an insulating cot, the concave and convex portions opposed to the central portion of the protruding piece are engaged with each other, and both sides of the cover body are further sandwiched by the insulating cot. If this is done, the engaging parts on opposite sides of the uneven part will engage and the installation will be completed, and the wire coating will be held in a state where it will not move by pinching the core wire in the wire pinching part at the coating stripping point of the overhead wire. The repair cover is securely fixed, and at the same time, the creepage distance can be secured by the uneven portion provided opposite to the protruding piece, and a sufficient insulating function is maintained.

[0006] In addition, in the above-mentioned insulated yatsuko, long rods called hot sticks are attached to the two handle portions, respectively, and are work tools formed so that work from a high place can be performed by operation from the ground. Is. And when doing rain work on the overhead line at the same place, if you pry it in a state where you insert the blade tip of a flat-blade screwdriver into the flat recess of the cover repair cover for the electric wire that is attached to the flat-wire and rotate the flat-blade screwdriver. The engagement of the engaging portion is released, and further, the engagement of the concave-convex portion is released, so that the protruding piece can be expanded. Therefore, if the cover body is moved in one direction from the installation location on the overhead wire, the core wire at the location where the insulation coating is peeled off is exposed, so rain work of bypass construction can be easily performed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the drawing, reference numeral 1 is a half-divided cylindrical body 2 which has a required inner diameter and length and which is linearly divided in the longitudinal direction, is provided with protruding pieces 3a and 3b opposite to each other, and is integrally molded with a synthetic resin material. It is a cover body that is formed by
An electric wire holding portion 4 having an inner diameter that matches the core wire C is provided.
The length of the wire holding portion 4 is set so that the ends of the insulating coating B are brought into contact with both ends of the exposed portion of the core wire C and the cover body 1 is not displaced without taping. (See Figure 8)

Further, as shown in FIG. 3, a plurality of pairs of protrusions 5 for securing a creepage distance and recessed grooves 6 for receiving the protrusions 5 are provided on the protrusions 3a and 3b, respectively. As shown in FIG. 4, a fitting portion 7 having one hook 7'and the other recess 7 "is provided in the central portion of the lowermost position of the protrusion 5 and the groove 6 to form the protrusions 3a and 3b. The central joint is not opened, and vertical drainage holes 8 are provided at the left and right ends of each ridge 5 so that rainwater and the like flowing into the cover body 1 can flow out.

Further, a pair of locking claws 9 and engaging holes 10 for engaging the locking claws 9 are provided at opposite ends of the projecting pieces 3a and 3b with a space therebetween, and the locking claws 9 are also provided. , 9 and the engaging holes 10, 10 are provided with a flat recess 11 into which the blade tip of the flat head screwdriver D is inserted.

Further, two ridges 12, 12 for preventing the inflow of water are provided around each of the left and right ends of the inner surface of the cover body 1. Further, a trapezoidal flat surface 14 is formed at a central position on the outer side of the projecting piece 3b, and a hole 13 is formed in the lower portion of the flat surface.

In the electric wire coated repair cover of the present invention thus formed, the projecting pieces 3a and 3b are expanded to each other, and the hole 13 of the trapezoidal flat surface 14 provided in the projecting piece 3b is shown in FIG. As described above, one jig J attached to each blade of the insulating cot P was inserted, and the other jig J of the insulating cot P was inserted between the expanded protruding pieces 3a and 3b. In this state, the insulating mat P is raised above the ground, the gap between the cut edges widened as shown in FIG. 6 is inserted into the overhead wire, and the insulating coating B after the overhead wire construction is peeled off to expose the exposed core wire C. After being sandwiched by the wire holding portion 4 of No. 1, the insulating cot P is once removed from the projecting piece 3b to release the expansion of the projecting pieces 3a, 3b, and the flat surface 14 of the central portion of the projecting pieces 3a, 3b is insulated. It is sandwiched by Yatco P and each ridge 5 and groove 6
In addition, the fitting portion 7 is engaged, and the projecting pieces 3a and 3b are further engaged.
If the left and right ends of the cover body 1 are respectively sandwiched by the insulating cots P, the locking claws 9 provided at opposite ends of the cover body 1 are engaged with the engagement holes 10 and the cover body 1 is not moved without being moved. Securely attached to.

When the work such as the bypass method is to be carried out again at the portion repaired by the repair cover in this way, the flat recesses 11 and 11 provided at both ends of the projecting pieces 3a and 3b are cured at the tip of the insulating cot. If a flat-blade screwdriver D is attached instead of the tool J, and the blade edge is inserted into the flat recessed portion 11 and rotated as shown by the arrow in FIG. 7, the respective blades provided on the projecting pieces 3a and 3b of the cover body 1 are removed. The engagement between the locking claw 9 and the engagement hole 10 is released, and following this, the engagement between the protrusions 5, the recessed grooves 6 and the fitting portion 7 is released respectively, and the diameter of the wire holding portion 4 is reduced. Since the jig is expanded, one of the jigs J of the insulating hat P is fitted into the hole 13 of the flat surface 14 of the trapezoid provided on the projecting piece 3b, and the insulating hat P is moved to the left or right, so that the repair cover is moved to the left or right. The repair cover can be removed from the overhead line Not be, performed rework is to expose the peeling point of the covered electric wire.

[0013]

As described above, the electric wire coated repair cover of the present invention can be easily attached to an overhead wire and the work efficiency is improved. Moreover, it can be fixed without misalignment during use, and can reliably cover the peeling point of the insulation coating to ensure sufficient safety performance, and also secure a creepage distance to fully demonstrate the insulation function. . Then, if necessary, insert the blade tip of a flat-blade screwdriver into the flat recesses provided at both ends of the protruding piece and rotate it like a prying to easily release the engaged state and expand the diameter of the wire holding part. Since the cover body can be moved on the overhead line, it can be conveniently performed without removing the cover body even when reconstructing the bypass line construction method of the overhead line.

[Brief description of drawings]

FIG. 1 is a perspective view of a cover body viewed from one side surface.

FIG. 2 is a perspective view of the cover body seen from the other side surface.

FIG. 3 is a perspective view of a state in which the cover body is vertically cut to show the inner surface.

4 is a sectional view taken along the line AA of FIG.

FIG. 5 is a perspective view showing a state in which the cover body is held by an insulating jack.

6 is a perspective view showing a state in which the electric wire is covered with the repair cover in the state shown in FIG.

FIG. 7 is an explanatory diagram of a state in which a flat-blade screwdriver is inserted into the flat concave portion to release the state in which the electric wire is attached and fixed.

FIG. 8 is a cross-sectional view of a main part in a use state.

[Explanation of symbols]

 1 Cover Main Body 2 Cylindrical Body 3a, 3b Projecting Piece 4 Wire Clamping Section 5 Projection 6 Recessed Groove 9 Locking Claw 10 Engagement Hole A Insulated Wire D Minus Driver

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kei Akiyama 2 at 1302 Koya, Seki City, Gifu Prefecture (72) Inventor Koji Kajimoto 4-2-6 Sakuradai, Seki City, Gifu Prefecture

Claims (1)

[Claims] 1. A cover body, which has a required inner diameter and length, is formed of a synthetic resin material, and a protruding body is provided opposite to each other at a cut edge of a half-divided cylinder which is linearly divided in a longitudinal direction. The inner part of the inner surface of the cylindrical body is provided with a wire holding part that matches the outer diameter of the core of the insulated wire. An electric wire covering and repairing cover is provided with a pair of engaging portions to be engaged with and disengageable from each other, and a flat concave portion into which a flat plate such as a flat-blade screwdriver can be inserted between the engaging portions and the concave-convex portion. .