JPH0127372Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a wire cover attachment tool for attaching a sleeve-shaped wire cover to the outer periphery of an overhead power distribution line or the like.

Electric wire covers are attached to the outer periphery of electric wires to protect overhead power distribution lines from contacting trees, buildings, etc. and damaging them. As shown in Fig. 1, this electric wire cover is a cylindrical piece made entirely of a composite material of hard plastic or soft plastic, and is divided into radial sections along its length. A widening cut 2 is provided, and a fastener 3 is provided in a portion of the cut 2 that is fitted in a concave and convex manner so as to be openable and closable.

To attach such an electric wire cover 1 to the outer circumference of an electric wire, gradually widen the opening width of the cut 2 from one end of the cylindrical shape, insert the electric wire into the opening, and then insert the electric wire into the opening while maintaining this state. The cover 1 is pushed and moved along the length of the wire, but at this time, the cut 2 is forced to move considerably against the restoring force (elastic reaction force) of the wire cover 1, as shown in Figure 2. It becomes necessary to open the opening over the length (distance X+Y).

However, in reality, the cut 2 opens in the range indicated by the distance X and slides along the outer peripheral surface of the electric wire 4.
Although the engagement acts to deepen, the cut 2 does not open sufficiently in the range indicated by distance Y due to the elastic restoring force of the wire cover 1, and therefore the wire cover 1 tends to come off the outer periphery of the wire 4. becomes stronger.
For this reason, if the wire cover 1 is forcibly bent as shown in FIG.
There was a risk that the entire wire would come off the wire 4, and therefore, no matter how much the wire cover 1 was pushed and moved, it would not be attached as expected.

The present invention was made based on the above background,
The purpose is to provide a wire cover attachment tool that can efficiently and easily attach the wire cover to the outer circumference of the wire.

Hereinafter, the present invention will be explained based on FIGS. 3 and 4.

FIG. 3 shows an embodiment of the wire cover mounting tool 10 according to the present invention, which includes a base plate 11 for vertically fixing the wire 4 on the surface thereof, and a base plate 11 for fixing the wire cover 4 vertically.
It has a basic structure consisting of a tongue-like piece 13 that projects in an inclined state in the length direction of the base plate 11 with an appropriate opening angle θ so as to form a slight gap 12 between the base plate 11 and the base plate 11 .

The substrate portion 11 has a semicircular groove 14 formed on its inner surface with a radius of curvature substantially matching the radius of the electric wire 4, and the radius of curvature of the outer surface thereof is less than half the inner diameter of the electric wire cover 1. It is shaped like a gutter.

Further, the tongue-like piece 13 is arranged in the gap 12 having an opening angle θ between the wire cover 13 and the base plate 11.
In order to guide the cut 2 of the wire cover 1, its base end 13' is fixed integrally to the outer surface of the base plate 11 with screws 15, and the cut 2 of the wire cover 1 is attached to the base end 13'. A guide portion 16 is formed to smoothly spread the material.

A case in which the wire cover 1 is mounted on the wire 4 using the wire cover mounting tool having the following configuration will be described below.

First, as shown in FIG. 4A, after fixing the base plate 11 of the wire cover mounting tool 10 along the longitudinal direction to the surface of the wire 4 using an appropriate fastener 17 such as a wire, band, or adhesive tape, In order to open the cut 2, the portion of the electric wire cover 1 having the cut 2 is guided into the gap 12 between the base plate 11 and the tongue-like piece 13, as shown by arrow B. Keeping the wire cover 1 as it is, push it further in the direction of arrow B. Then, cut 2
The guide portion 16 of the tongue-like piece 13 has large separated openings on both left and right sides and begins to wrap around the outer periphery of the electric wire 4 as shown in FIG. 4B. In this state, the wire cover 1 is such that the cut 2 easily slides along the outer peripheral surface of the wire 4 and tends to close the opening and come off due to restoring force, as in the range shown by distance Y in FIG. On the other hand, a part of the cut enters the gap 12 as shown by the two-dot chain line in FIG.
Since the wire cover 1 is held down from the inside by the tip of the wire cover 1, it is in a stable state where it can only move in the length direction, so as long as the cutout 2 remains fitted into the gap 12, the wire cover 1 will continue to move. This prevents it from escaping in a direction away from the electric wire 4.

Next, as shown in FIG. 4C, the wire cover 1 is further moved in the direction of the arrow B, and while the fastener 3 of the cut 2 that is about to be brought together (closed) by the restoring force is fitted, the wire cover 1 is moved as shown in FIGS. 4D and 4C. As shown in FIG. 4E, the electric wire covers 1 are sequentially placed over the electric wires 4, and the fasteners 17 are removed when the installation is completed.

As is clear from the above explanation, the wire cover attachment device according to the present invention uses the guide portion to spread out the cut of the wire cover that is fitted onto the tongue-like piece, and then extends the cut on the board until the cut covers approximately half of the wire. By sliding the cover along the outer surface of the wire, the distance between the cuts is widened until it is equal to or larger than the diameter of the wire, and then the wire cover is placed over the wire and comes into contact with it.
This prevents the tip of the slit from hitting the wire surface and damaging it, and also prevents the slit from sliding off the wire surface due to the elastic reaction force of the wire cover mounting tool, making it possible to efficiently and easily attach the wire cover to the outer periphery of the wire. It can be coated with

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an example of a wire cover, FIG. 2 is an explanatory diagram of an example of how the wire cover is attached, and FIG. 3 is a diagram showing an embodiment of the wire cover mounting tool according to the present invention. A front view of the section, B is a bottom view, C is a bottom view.
is a sectional view taken along line C-C of A, Figures 4 A to E
FIG. 1 is a process explanatory diagram of a mounting operation using the wire cover mounting tool of the present invention. 1...Electric wire cover, 2...Cut, 4...Electric wire,
10...Electric wire cover mounting tool, 11...Base part, 1
2... Gap, 13... Tongue, 14... Groove, 16...
...Guide portion, 17...Fastening tool.

Claims (1)

[Scope of utility model registration request] A wire cover mounting tool for attaching a cylindrical wire cover provided with a fastener that can be opened and closed in the longitudinal direction to the outer periphery of the wire using the opening of the fastener, the wire cover being attached in the longitudinal direction of the surface of the wire 4 a base plate 11 fixed longitudinally along the base plate 11; a tongue-shaped piece 13 having a proximal end fixed to the outer surface of the base plate 11 and protruding in an inclined state in the same direction as the base plate 11 with an appropriate opening angle θ; The outer surface of the base plate 11 is formed in a semicircular shape similar to the surface shape of the electric wire 4, and the outer surface of the base plate 11 is formed between the outer surface of the base plate 11 and the base end of the tongue 13. A wire cover mounting tool characterized in that a guide portion 16 is formed to spread out the cutout 2 of the wire cover 1 fitted therein.