JP2000285758A - Bypass wire and protective cover of pin insulator for anchoring the bypass wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent ground-fault accidents caused by having birds nesting on an upper part of a utility pole, on which a bypass wire is laid. SOLUTION: This protective cover A used for covering a bypass wire W laid between end parts of two wires E, E coming from fore and hind of an upper part of a utility post P, is made up by molding a tubular cover body 1 out of a flexible resin, and providing an incision 5 in a lower end part of the cover body 1 so that it can be opened along the longitudinal direction, and the bypass wire W is adapted to be spaced apart from an inner circumferential surface of the cover body 1 with a fixed distance kept therebetween.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guard wire for preventing a ground fault accident caused by nesting of birds on an electric pole on which a guard wire is erected, and a protective cover for a pin insulator for retaining the trim wire. It is about.

[0002] Here, the wraparound wire refers to an electric pole on which an electric wire (main line) is erected, where the ends of two electric wires coming from the front and rear of the electric pole are respectively locked by clamps moored to the electric pole. It refers to a lead wire that is inserted between the two clamps to connect the wires to each other, and the border wire is generally secured to a pin insulator erected on the arm using a bind wire. The connection portion between the electric wire and the wrapping wire in each of the clamps is usually covered with a clamp cover.

[0003]

2. Description of the Related Art Heretofore, birds such as crows often nest on the upper part of a utility pole on which a wraparound wire is provided.

[0004]

However, recently,
In some cases, a metal material such as a wire is mixed in the nesting material, and the wire comes into contact with the edging wire and a cover of a portion connecting the edging wire, and a ground fault accident occurs frequently.

Accordingly, the present invention has been made to solve the above-mentioned problems, and a ground fault is reliably prevented by attaching a wrapping wire and a bind wire attached to a pin insulator for retaining the wrapping wire. SUMMARY OF THE INVENTION It is an object of the present invention to provide a protective cover for a binding wire attached to a trimming wire and a pin insulator for retaining the trimming wire.

[0006]

In order to achieve the above object, a protective cover for an electric wire according to the present invention is provided on an electric wire provided between two ends of electric wires coming from the front and rear of an upper part of a pole. A protective cover to be attached, wherein a cylindrical cover main body is formed of a flexible synthetic resin, and a cutout is provided at a lower end portion of the cover main body so as to be openable and scalable along a longitudinal direction. And the inner peripheral surface of the cover main body are held at a predetermined distance from each other. The cover body is flexible and preferably a flame-retardant synthetic resin, for example a flame-retardant polyethylene. By using the flexible synthetic resin in this way, even if the edging line is curved, it is well adapted to its shape, and the edging line and the inner peripheral surface of the cover body are nested on the outer peripheral surface of the cover body. The wire is held at a predetermined interval so as not to cause a ground fault even if the wire contacts the ground wire, so that a ground fault accident is reliably prevented.

[0007] The protective cover for the binding wire attached to the pin insulator for holding the edging wire is a pin insulator for holding the edging wire installed between two ends of the electric wires coming from the front and rear of the upper part of the pole. A protective cover to be attached, the cover being formed of a synthetic resin, the cover being attached to a cap portion of the pin insulator and a neck portion located below the cap portion and anchoring an edging wire; and the body cover. And an insertion portion provided on one side of the portion and communicated with the insertion portion and through which the edging wire is inserted. The protective cover for the edging wire according to claim 1 is engaged and connected to both ends of the insertion portion. And a configuration in which an engaging portion is provided. This protective cover is also preferably made of flame-retardant synthetic resin. If the protective cover is attached to the pin insulator, and furthermore, the protective cover attached to the front and rear wrap around the pin insulator is engaged with and connected to both ends of the insertion portion, the pin insulator can be connected. In addition, the entire front and rear edge lines can also be covered, thereby more completely preventing ground faults.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an embodiment of a wrapping line according to the present invention and a protective cover for a binding wire attached to a pin insulator for retaining the wrapping line. FIG.
2 is a perspective view of a protective cover of the edging line, and FIG.
It is a line sectional view. In the figure, 1 is a synthetic resin having flexibility and flame retardancy, for example, flame retardant polyethylene,
Moreover, the cover body is formed in a horizontally long tubular shape with an inconspicuous color having weather resistance, and its outer peripheral wall is formed in a bellows shape by repeating irregularities having an arc-shaped cross section so that it can be freely bent. Both end surfaces of the cover main body 1 are covered with a cover plate portion 2, and a circular through hole 3 is opened in each cover plate portion 2. Reference numeral 4 denotes a notch-shaped engaging concave portion provided on the upper side of each cover plate portion 2 and on the outer peripheral edge of each through hole 3. The through holes 3 and 3 and the engaging recess 4 are for connecting to a pin insulator C described later.

A notch 5 is provided at the lower end of the cover body 1 so as to be openable along the longitudinal direction so as to be openable. The overlapped edge overlaps the inside of one of the divided edges from the top on the other inner peripheral surface. The part 6 is extended. Protruding pieces 7, 7 extending downward at appropriate intervals are provided at the respective divided edges so as to face each other, and locking holes 8, 7 formed in communication with the respective projecting pieces 7, 7 are provided.
By inserting and connecting the connecting pin 9 to the cut 8, the cut 5 is not opened unnecessarily.

Further, the inner diameter of the cover main body 1 is selected within a range in which, when the cover main body 1 is attached to an edge turning wire W described later, a wire, which is a nesting material, comes into contact with the outer peripheral surface of the cover main body 1 and does not cause a ground fault. Depending on the length of the portion to which the edging line W is attached, the cover body 1 is cut and used halfway.

Reference numeral 10 is attached to the edging line W so that the inner peripheral surface of the cover body 1 attached to the edging line W and the edging line W are held at a predetermined interval. And is formed of a synthetic resin. As shown in FIG. 3, the spacer 10 comprises an annular frame 11 having an outer diameter slightly smaller than the inner diameter of the cover body 1. The lower ends of the annular frame 11 are separated and curved inwardly toward each other. The extension pieces 11a and 11b are extended. An arc-shaped small-diameter grip portion 12 which is located at substantially the center of the annular frame 11 and is fitted to the edging line W is provided integrally with the tip of one of the extension pieces 11a. An arc-shaped large-diameter gripping portion 13 which is also located substantially at the center of the tip.
Are provided integrally. The two types of small-diameter / large-diameter gripping portions 12 and 13 are provided in order to be able to be used in correspondence with any of the wrapping lines W having different thicknesses. Also, the center of the upper part of the annular frame 11 and the respective extension pieces 11a,
A support piece portion 14 is provided on the outer surface of the support member 11b to support the cover main body 1 in contact with the inner peripheral wall. 11c
Are arranged substantially concentrically in the gap inside the annular frame 11,
It is an obstruction frame for preventing small animals such as birds from passing through the gap.

Reference numeral B denotes a protective cover for the binding wire attached to the pin insulator C to which the edging wire W is fastened, which is a flame-retardant synthetic resin, for example, a flame-retardant polyethylene as described above. It is molded with an inconspicuous color having weather resistance. As shown in FIGS. 4 and 5, the protective cover B of the pin insulator is provided with a cap portion C1 of the pin insulator C and a neck portion C2 located below the cap portion C1 and holding the edging line W.
And has a hollow main body cover portion 15 to be attached thereto, and a lower end surface thereof is opened so as to be attached. In addition, a horizontal insertion portion 17 that communicates with the internal space 16 and through which the edging wire W is inserted is integrally provided on one side of the main body cover portion 15.

The insertion portion 17 has a cylindrical shape with both ends opened, and the left and right half insertion portions 17a, 1 along its longitudinal direction.
7b. At each upper end edge, there is provided a projecting projection 18a, 18b joined to each other and having a plurality of engaging projections 19 on the inner surface of one of the projections 18a. The engagement with the engagement recess 20 prevents the displacement of the two shaft support pieces 18a and 18b. Further, as shown in FIG.
The hinge member 21 is fitted so as to wrap around the outside in a state where b is joined. As a result, the hinge portion 22 is formed, and one left half insertion portion 1 is inserted through the hinge portion 22.
The lower side of 7b is freely opened and closed.

The outside diameter of the insertion portion 17 is the same as that of the cover body 1.
The inner periphery of both ends of the insertion portion 17 is provided with a gooseneck-shaped annular flange portion 23 as an engaging portion that engages with the through hole 3. A gripping piece for opening the left half insertion portion 17b on one outer side of the main body cover portion 15 and the insertion portion 17 so that the protection cover B for the pin insulator can be easily attached to the pin insulator C. 24
Are protruding.

The present invention will be described with reference to the use of a protective cover for a binding wire having the above-mentioned structure and attached to a pin insulator for holding the border wire and the pin insulator. As shown in FIG. 6, a power pole P is usually provided with an arm R on an upper portion thereof. A mounting bracket S is attached to the arm R in an orthogonal shape, and ends of two electric wires E, E coming from the front and rear of the utility pole P are moored at both ends thereof via a tension insulator G and a clamp K. You. A wrapping wire W for connecting a mutual electric wire is provided between the front and rear clamps K, K. Almost the center of the edging wire W is fixed to a pin insulator C erected on the upper surface of the arm R.

Therefore, as shown in FIGS. 7 and 8, first, the protection cover B of the pin insulator is pinched with both fingers 24, 24 with fingers to open the insertion portion 17, and the insertion portion 17 is wrapped around the wire. At the same time, the main body cover 15 is attached to the pin insulator C from the lower end opening. Next, as shown in FIGS. 7 and 9, the lower end is pushed into the front and rear wrapping lines W of the pin insulator C, and the small-diameter grip portion 12 is fitted thereto, whereby the plurality of spacers 10
Attach. When the edging line is thicker than this, large-diameter gripper 1
Use 3. Then, the cover main body 1 is expanded at the divided edge so as to cover each spacer 10, and the protective cover A of the wraparound line is attached to the wraparound line W.

At this time, the facing through holes 3, 3 of the two cover bodies 1 are fitted to both ends of the insertion portion 17 such that the annular flange 23 is located inside and the engaging recesses 4, 4 are located in the hinge 22. Then, the connecting pins 9 are inserted into the locking holes 8 of the projecting pieces 7 and connected to each other. As a result, as shown in FIG. 7, the upper or lower supporting piece 14 of each spacer 10 supports the inner peripheral wall of each cover main body 1, and each of the cover main bodies 1 is connected to the rim line W and its inner peripheral surface. Are held at a predetermined interval.

Further, since the protection covers A, A of the wrap around the pin insulator are connected before and after the protection cover B of the pin insulator, the pin insulator C and the entire wrap around the front and back of the pin insulator C are covered in series, and the nesting is performed. A ground fault accident caused by contact of the wire material can be reliably prevented in a wide range. If the pin insulator C is not provided, the protective cover A for the wraparound wire alone can be used alone, and the function of preventing a ground fault can be sufficiently exhibited.

In this embodiment, the protective cover A for the wraparound line is covered with the wraparound line W via the spacer 10, but instead of the spacer 10, a support having the same function is provided. The member may be formed integrally with the cover body 1, whereby the molding is simple and the mounting operation can be performed quickly and easily.

[0020]

As described above, the protective cover for the wrapping wire according to the present invention is a protection cover to be attached to the wrapping wire provided over the telephone pole, and is formed of a flexible synthetic resin. The wire is a nesting material because the curved wire is familiar with the curved wire and the inner circumferential surface of the cover body is held at a predetermined distance between the wire and the inner peripheral surface of the cover body. Even if touching the protective cover, the distance from the edging line is sufficiently maintained, and the ground fault is reliably prevented.

If a protective cover for the pin insulator is used, and the protective cover is attached to the pin insulator and the protective cover for the wrapping wire is connected to the front and rear thereof, the front and rear edges including the pin insulator are provided. The entire circumference can also be covered, which also reliably prevents ground faults.

[Brief description of the drawings]

FIG. 1 is a perspective view of a protective cover for a wraparound line.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a perspective view of a spacer.

FIG. 4 is a perspective view of a protection cover of the pin insulator.

FIG. 5 is a perspective view as viewed from the back side.

FIG. 6 is a perspective view of a state where both protective covers are used.

FIG. 7 is an enlarged front sectional view of the main part.

FIG. 8 is a sectional view taken along line YY of FIG. 7;

FIG. 9 is a sectional view taken along line ZZ of FIG. 7;

[Explanation of symbols]

 Reference Signs List 1 cover body 5 notch 15 body cover part 17 insertion part 22 hinge part 23 engaging part (annular flange part) A protection cover for edging wire B protection cover for pin insulator C pin insulator C1 cap part C2 neck part E electric wire P telephone pole W Edge line

Claims (2)

[Claims] 1. A protective cover to be attached to an edging wire provided between two ends of electric wires coming from the front and rear of an upper part of a telephone pole, wherein a cylindrical cover body is formed of a synthetic resin having flexibility. A notch is provided at the lower end of the cover body so as to be openable and splayable along the longitudinal direction, and the edging line and the inner peripheral surface of the cover body are held at a predetermined distance therebetween. Protective cover for the border line. 2. A protective cover to be attached to a pin insulator for holding an edging wire provided between two wire ends coming from the front and rear of an upper part of a utility pole, the cover being formed of synthetic resin and being a cap of the pin insulator. A main body cover portion which is attached to the lower portion and the neck portion which is located below the cap portion and anchors the rim line, and a rim line which is provided in communication with one side of the main body cover portion and is inserted therethrough. An insertion portion is provided, and an engagement portion is provided at both ends of the insertion portion, the engagement portion being engaged with and connected to the protective cover of the edging wire according to claim 1. Protection cover for pin insulator.