JP2001298838A - Insulating cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulating cover which can secure a creeping distance between a live part and an insulated object, is excellent in an attachment work and is low in a manufacturing cost. SOLUTION: An elastic winding part 11 is wound around a wire 20 of an insulated object starting from its one end, while its outside is wrapped successively by a winding part 12 so as to form an approximately cylindrical shape. A flange part 10 and the winding part 12 are engaged with each other by an engagement button 21 to be attached to the wire 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulating cover for eliminating a ground fault or short circuit failure due to bird and animal contact between an object to be insulated, such as an ultra-high voltage power transmission line of a tower and components of the tower, and a support.

[0002]

2. Description of the Related Art Conventionally, there has been no spiral-shaped heat-shrinkable insulating tape on an object to be insulated, such as an ultrahigh-voltage power transmission line of a tower or a tower component, without an insulating cover for preventing a ground fault or a short-circuit failure. A method of shrinking the heat-shrinkable insulating tape with heat and attaching the heat-shrinkable insulating tape to an insulating object has been employed.

[0003]

However, in the conventional method, the outer diameter of the wrapping of the heat-shrinkable insulating tape is different depending on the installation operator, and the fixed distance between the object to be insulated and the heat-shrinkable insulating tape is constant. Creepage distance could not be secured. In addition, an operation for shrinking the heat-shrinkable insulating tape is required, and there is a problem in workability.

Therefore, an object of the present invention is to solve the above-mentioned problems, and to secure a constant creepage distance with an object to be insulated,
Another object of the present invention is to provide an insulating cover which is excellent in terms of mounting work and inexpensive in manufacturing.

[0005]

Means for Solving the Problems and Effects of the Invention
The features of the present invention made to solve the above problems will be described in detail. According to the invention of claim 1, a plate-shaped winding portion having elasticity capable of winding an object to be insulated is respectively extended from one end of the flange portion in different directions, and one end of the winding portion is As a starting point, it is wound around the object to be insulated so as to have a substantially cylindrical shape, and the flange portion and the other end of the wound portion are locked and attached to the object to be insulated.

According to the insulating cover of the first aspect, since the plate-shaped wrapping portion has elasticity, one end of one plate-shaped wrapped portion extending in one direction from one end of the flange portion is provided. Is wound around the object to be insulated from the starting point so as to be substantially cylindrical, and the flange portion and the other end of the winding portion can be locked to be attached to the object to be insulated.

At this time, since the insulating cover has the flange portion, the mounting position of the flange portion and the other end of the wrapping portion is determined, and the outer diameter of the wrapping does not differ depending on the mounting operator. A constant creepage distance can be secured. Further, since the mounting operator determines the mounting position based on the position of the flange portion, the position of the mouth where the other end of the flange portion and the winding portion are fitted is regulated by the mounting direction of the flange portion. When installing,
The mouth can be set in any direction.

In addition, the work can be efficiently performed because it can be attached to the object to be insulated with a structure that only locks the flange portion and the plate-shaped winding portion. Further, in order to wind the insulating cover around the object to be insulated, it is necessary to form the insulating cover into a substantially cylindrical shape as shown in FIG. 2, but such a shape is difficult to manufacture.

However, since the insulating cover according to the first aspect has elasticity and flexibility, it is easy to manufacture a mold by making it into a plate shape, and it can be manufactured at low cost. Note that the plate-shaped winding portion includes a shape that can be wound around an insulating object, such as a flat plate, a curved plate, or a corrugated plate.

Next, according to a second aspect of the present invention, a second flange portion is provided at the other end of the winding portion, and the second flange portion is locked with the second flange portion. It is characterized by. According to the insulating cover of the second aspect, since the locking can be performed between the flange portion and the second flange portion,
The mounting shape is more stable, and it is easy to mount and remove.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments of the present invention will be described with reference to the drawings in order to further clarify the embodiments of the present invention. First Embodiment FIGS. 1 to 3 show an insulating cover according to a first embodiment of the present invention. FIG. 1 is a front view showing a state in which the cover is attached to an electric wire to be insulated. 2 is FIG.
3 is an enlarged cross-sectional view of the AA section, and FIG. 3 is a view showing a state in which the insulating cover of FIG. 2 is opened.

The insulating cover 1 is made of an insulating material having elasticity, such as silicon rubber and ethylene propylene rubber, having withstand voltage performance and weather resistance.
, Flat plate-like winding portions 11 and 12 extend in different directions. In the present embodiment, each of the flange portions 10 extends at a right angle, but the winding portion 11 and the winding portion 12 may extend in different directions, and the angle is not particularly limited.

Holes 17 and 18 are formed in the flange 10 and the end of the winding portion 12 at corresponding positions at regular intervals. In this insulating cover 1, the mounting operator determines the position of the flange portion 10, winds around the electric wire 20 starting from one end of the winding portion 11, winds the electric wire 20, and sequentially winds the outside thereof with the winding portion 12. Then, the wire 20 is wound around the electric wire 20 so as to have a substantially cylindrical shape. If the winding portion 11 is long with respect to the diameter of the electric wire 20, the end portion may be appropriately cut and used.

The winding portion 11 is attached to one end of an electric wire 20 with an adhesive tape or a hook (not shown).
The winding portions 11 and 12 are wound in this order. next,
Hole 1 provided at the end of flange 10 and winding 12
The lock buttons 21 are inserted into the locks 7 and 18 and locked, and attached to the electric wire 20.

For this reason, since it can be easily locked by the locking button 21, attachment and detachment to and from the electric wire 20 are easy. In this embodiment, the locking buttons 21 are provided in the holes 17 and 18.
Is inserted and locked, but the ends of the flange portion 10 and the winding portion 12 may be locked with an adhesive or an adhesive tape.

The flange portions 10 of the winding portions 11 and 12
A convex portion 15 is provided on the surface on the side opposite to the above. The shape and position of the projection 15 are not particularly limited.
12 may be provided with bulges, waveforms, clouds, or the like at regular intervals, or bulges at regular intervals may be provided only on the surface on the side opposite to the winding part 11 side as shown in FIG.

For this reason, a certain gap is formed between the electric wire 20 and the inner wrapping portion 11 and between the inner wrapping portion 11 and the outer wrapping portion 12, so that the creepage distance can be secured, and rainwater can be secured at this portion. Can be drained naturally. In this embodiment, the flange portion 10 has a plate shape.
5, as shown in FIG. 5, the peripheral portion of the hole 17 is cut or formed into such a shape from the time of molding.
The periphery of the second hole 18 may have the same shape, and the locking button 21 may be inserted into this portion to reduce the air resistance of the insulating cover 1.

Although the winding portions 11 and 12 are also flat plates, they may be curved plates or corrugated plates, and may be plates having both ends curved as shown in FIG. further,
The protrusions 15 may also be provided on one surface or both surfaces. Second Embodiment Next, FIGS. 7 and 8 show an insulating cover according to a second embodiment of the present invention. FIG. 7 is an enlarged view showing a state where the cover is attached to an electric wire to be insulated. FIG. 8 is a sectional view showing a state where the insulating cover of FIG. 7 is opened.

The insulating cover 30 according to the present embodiment
The second flange portion 40 is provided at the end of the second flange. Therefore, the insulating cover 30 is provided with the electric wire 50
And the outside thereof is wound around the winding portion 32 to be wound around the electric wire. Next, a locking button 47 is inserted into holes 44 and 45 provided in the flange portion 41 and the second flange portion 40 and locked, and attached to the electric wire 50. For this reason,
The mounting shape is more stable, and it is easy to mount and remove. Third Embodiment FIG. 9 shows an insulating cover according to a third embodiment of the present invention.

The insulating cover 60 of this embodiment is provided with triangular ribs 65, 66, 67 at a part of a winding portion 61. When the ribs 65, 66, 67 are wound around the electric wire 70, which is an object to be insulated, the ribs 65 facing upward improve the snow break. That is, the inclination of the rib 65 makes it easier for snow to fall upward, and prevents snow from being accumulated on the insulating cover 60.

Further, a rib 6 slightly obliquely downward from the side.
6, 67 makes the drainage better. That is, the ribs 66, 67 do not cause water droplets to fall from the tips of the ribs 66, 67 and directly drop onto the insulating cover 60. Fourth Embodiment FIG. 10 shows an insulating cover according to a fourth embodiment of the present invention.

The insulating cover 80 of this embodiment is provided with a spiral groove 87 at the winding portion 82 and the flange portion 85 so as to reduce air resistance. For this reason, the layer of the air flow changes from the case where the winding part 82 and the flange part 85 are flat, and the air resistance is reduced.

In the present invention, various improvements can be freely made without departing from the gist thereof.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which an insulating cover is attached to an electric wire.

FIG. 2 is an enlarged cross-sectional view taken along a line AA in FIG.

FIG. 3 is a view showing a state where an insulating cover of FIG. 2 is opened.

FIG. 4 is a view showing an example in which the shape and position of a convex portion are changed.

FIG. 5 is a front view in which shapes of a flange portion and a winding portion are changed.

FIG. 6 is a view showing an example in which the shape of a winding portion is changed.

FIG. 7 is an enlarged sectional view showing a state in which the insulating cover of the second embodiment is attached to an electric wire.

8 is a view showing a state in which an insulating cover of FIG. 7 is opened.

FIG. 9 is an enlarged sectional view showing a state where ribs are provided.

FIG. 10 is a front view showing a state in which spiral grooves are provided.

[Explanation of symbols]

1, 30, 60, 80 ... insulating cover, 10, 41, 8
5 ... Flange part, 11, 12, 32, 33, 61, 82
... winding part, 15 ... convex part, 40 ... second flange part, 6
5, 66, 67 ... rib, 87 ... spiral groove

Claims (2)

[Claims] 1. An elastic plate-like wrapping portion capable of winding an object to be insulated is extended from one end of a flange portion in a different direction, and one end of the wrapping portion is used as a starting point. An insulating cover which is wound around an object to be insulated so as to have a substantially cylindrical shape, and is attached to the object by locking the flange portion and the other end of the wound portion. 2. The insulation according to claim 1, wherein a second flange portion is provided at the other end of the winding portion, and the flange portion and the second flange portion are locked. Cover.