JP2002027648A - Electrical wire branching/supporting appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the weight of an electrical-wire branch appliance, which is fitted to a suspension wire which hangs an electrical wire between utility poles and used for branching the covered electrical wire, and saves work by simplifying anchoring and fixing of the covered electrical wire to the suspension wire. SOLUTION: The branching/supporting appliance contains a branch metal appliance, which has united body and is composed of wound parts 11 formed by making the both sides of a wire-like substance into spirals having inside diameters slightly smaller than the outside diameter of the suspension wire, and an anchor appliance locking part 12 formed by swelling it at approximately the center part of the wire-like substance. The wound parts 11 on both sides are wound on the suspension wire and fixed. Moreover, the branching/supporting appliance contains an electrical-wire anchoring appliance 2, composed of an anchoring part 22 formed by folding another wire-like substance back, and an electrical-wire holding part 21 formed more on the tip side than on the anchoring part 22 of the wire-like substance in to spirals, having inside diameters smaller than the outside diameter of the covered branch wire. The anchor appliance 2 is locked in the locking part 12 of the metal appliance 1, and the holding part 21 winds round and holds the branched covered electrical wire.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire branching device which is attached to a suspension line stretched between electric poles and is used for branching a covered electric wire.

[0002]

2. Description of the Related Art Conventionally, in order to supply electricity to each electric consumer from a covered electric wire of a trunk line which is erected using a telephone pole, the covered electric wire is often branched. With respect to the prior art, Japanese Patent Laid-Open No. 59-63917 discloses a method in which a lead-in arm is fixed to a utility pole, a lead-in branch line is attached to this arm via an insulator, and each branch line is drawn out. In order to fix low-voltage overhead lead-in wires to messenger wires and structures, a DV made of porcelain is used.
Wire drawing fasteners are also used (JP-A-56-6618).
No. JP-A-9-224320).

JP-A-8-289450 discloses that a main cable attached to a main messenger wire is connected by a connection box, and an electric wire branched in the connection box is attached to a branch messenger wire branched from the main messenger wire. Power is distributed, but a clamp is provided at the tip of the branch messenger wire to serve as a retaining tool.The main messenger wire is sandwiched between a pair of gripping metal fittings and bolted. Fix it with bolts, and on this tongue,
The branch messenger wire is fixed by the above-mentioned clamp.

[0004] In another method, a metal branch made of a steel plate is attached to a branching point on a suspension wire or a messenger wire by bolting, and then, on a ceramic porcelain insulator, for each wire of the coated electric wire. It has also been known that a wrap insulator is connected to the above-mentioned branch hardware by a hook after being wound and fixed with a string or the like, thereby branching the covered electric wire. The use of the stranded insulators was intended to withstand the tension of the insulated wire between the branch point and the electric customer for electrical protection.

[0005] In recent years, in the branching work, the number of suspension lines has increased, and in addition, the branching point has been frequently relocated or expanded after being mounted. In order to simplify the work and save labor, Wire branch supports are becoming necessary.

[0006]

However, in the conventional branch support, a slightly large branch metal piece is fastened and fixed to the suspension line with a bolt or the like, or a branch metal part or a grip metal part is previously assembled at an intermediate portion of the suspension line. Since a plurality of covered electric wires are wound around a ceramic insulator and fixed with a cord or the like, the work is complicated and the fixing of the covered electric wire is complicated. Such work requires labor and labor due to the removal, relocation, and expansion of branch points, which is uneconomical.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an electric wire branching support having a simple structure, thereby simplifying the anchoring of a covered electric wire to a suspension line. The purpose of the present invention is to reduce the weight of the branching tool and to save labor, and at the same time, to improve the long-term electrical and mechanical reliability of the branching support.

[0008]

According to the present invention, there is provided an electric wire branch support comprising: a winding portion formed on both sides of a linear body into a spiral having a spiral inner diameter slightly smaller than an outer diameter of a suspension line; A retaining member engaging portion having a substantially central portion formed to bulge; The branching support further includes an electric wire anchoring device that is engaged with the anchoring device engaging portion, and the helical winding portions on both sides are wound around and fixed to the suspension wire to suspend the wire held by the electric wire anchoring device. It is fixed to the line.

In the branch metal fitting, the spiral winding portions on both sides are wound around the suspension line, and when the retaining member engaging portion is pulled in either direction, the spiral winding portion on one of the spiral winding portions on both sides is formed. A tensile stress is generated between the suspension and the suspension line, and the frictional force therebetween causes the spirally wound portion to tighten the suspension line, and as a result, the branch metal fitting is fixed to the suspension line.

[0010] Further, the branch support has a retaining portion formed by folding a separate linear body, and a smaller diameter than the outer diameter of the above-mentioned branch-covered electric wire at a position ahead of the retaining portion of the linear body. A wire holding portion formed into a spiral having a spiral inner diameter. In the electric wire retaining tool, the retaining portion is engaged with the retaining device engaging portion of the branch metal fitting, and the wire holding portion is wound around the branched electric wire and holds the wire.

[0011] When the insulated wire branched in this way is fixed to the suspension wire, in the wire anchoring device, when a tensile force acts on the insulated wire, the tensile force between the insulated wire and the helical wire body of the wire holding portion. Then, the spiral wire body expands and contracts the inner diameter, and the coated electric wire is fixed to the electric wire holding portion by the frictional force with the coated electric wire. This tension of the insulated wire generates a pulling force on the suspension line from the wire holding section through the wire retaining device, and the branch support is fixed to the suspension line for the reason described above, and the insulated wire is fixed to the suspension line. Will be done.

Further, the branch support preferably includes a fitting which is interposed between the above-mentioned wire retaining portion to be engaged and the retainer engaging portion. The fitting prevents wear and breakage of the linear members of the retaining portion and the retaining device engaging portion that intersect each other. Preferably, the fitting is formed of an insulator, and the insulator blocks an electric leakage to the suspension line in the case of an electrical short circuit of the wire retaining portion due to a damage of the covering layer of the covered electric wire. In this way, the fitting can guarantee mechanical strength and electrical insulation performance.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A branch metal fitting 1 of an electric wire branching support is
As illustrated in FIG. 1, a hard wire is used as the linear body 10, and both sides of the wire are spirally formed and the winding portion 1 is formed.
1 and 11 are formed, and an anchor engaging portion 12 is formed at a substantially central portion by swelling and pulling out the strand.

The winding portions 11 and 11 are wound around the hanging wire 5 and fixed, and have a spiral inner diameter slightly smaller than the outer diameter of the hanging wire 5. Each of the winding portions on both sides is formed of a spiral body several times, and in use, a suspension wire is inserted into the spiral inner diameter side.

The retaining member engaging portion 12 of the branch fitting 1 is formed between the winding portions 11 on both sides by drawing a wire in a U-shape outside the spiral center of the winding portion. In this way, the size of the electric wire anchoring tool 2 is adjusted so that the wires intersect via the fitting.

As the linear body used for the branch fitting 1, a hard wire, for example, a hard wire such as a hard steel wire can be used. It is preferable that the linear body itself has corrosion resistance or its surface has been subjected to corrosion-resistant processing having excellent weather resistance.

As shown in FIG. 2, the other electric wire anchoring tool 2 comprises an anchoring portion 22 formed by folding a linear body and an electric wire holding portion 21 spirally formed on the tip side of the anchoring portion. I have. As will be described later, the retaining portion 22 is adjusted to a dimension and shape in which the fitting 3 is provided between the opposing wires of the retaining portion.

The other electric wire holding portion 21 is formed in a spiral having a spiral inner diameter smaller than the outer diameter of the coated electric wire, and inserts and holds the coated electric wire 6.

As shown in FIG. 2A, the electric wire anchoring tool 2 may have a wire holding portion 21 formed in a spiral shape only on one side of the anchoring portion 22, or as shown in FIG. 2B. As described above, the wire holding portions 21 and 2
1 may be provided.

The wire used in the wire anchoring tool 2 can also be a hard wire, for example, a hard wire such as a hard steel wire. It is preferable that the linear body is made of a corrosion-resistant material, or that the surface of the linear body is subjected to corrosion-resistant processing having excellent weather resistance.

It is preferable that the fitting 3 is fixed to the retaining portion 22 in advance, and the fitting 3 is fitted with a fitting ring 31 as the fitting 3 shown in FIG. ing. The fitting wheel 31 is made of a disc-shaped or cylindrical insulator.

In this example, the fitting wheel 31 has a peripheral groove on the outer periphery, and the element wire 20 of the retaining portion 22 is fitted into the peripheral groove.
Fixed. Such a disk-shaped fitting wheel 31 has a through hole 38 substantially in the center portion thereof.
Then, the linear body of the branch fitting 1 is inserted, and the retainer engaging portion 12 is inserted and held.

FIGS. 3B and 3C show the retaining portions 22 of the electric wire anchoring tool 2 corresponding to FIGS. 2A and 2B, respectively.
Is shown by a U-shaped fitting 32 and integrated. FIG. 3D shows a cross section of the retaining portion 22 of the electric wire retaining tool 2.

The U-shaped fitting 32 has an outer shape substantially U-shaped or V-shaped, and is made of this insulator.
The inside of the hook 2 forms a hook portion 39, and the hook portion 39 is engaged with the hook portion 39 by being hooked on the retaining member engaging portion 12 during use.

Such a fitting 3 is formed of an insulator. As the insulator, insulators or other insulating materials such as ceramics and polymers can be used.

FIG. 4 shows the entire electric wire branching support assembly assembled by engaging the electric wire anchoring tool 2 with the branch metal fitting 1. In this example, the anchoring part 12 of the branch metal fitting 1 is fitted with a fitting ring. 31 through the through hole 38. Further, the element wire of the retaining portion 22 of the electric wire retaining tool 2 is fitted into and engaged with the peripheral groove of the outer periphery of the fitting wheel 31.

In such a branch fitting 1, at the time of use, as shown in FIG. 5, the winding portions 11, 11 on both sides of the anchoring portion 12 of the branch fitting 1 are fixed to desired positions of the hanging wire 5. I do. For fixing, it is only necessary to wind the spiral element wire of the suspension wire winding unit 11 around the suspension wire 5.

As a result, the electric wire anchor 2 is connected to the branch metal fitting 1.
, And the branch-coated wire 6 is fixed to the wire holding portion 21 on the front side of the retaining portion 22. This fixing is performed by attaching the wire holding portion 21 to the branch insulated wire 6.
Is formed by winding the spiral wire.

When the branch insulated wire 6 is stretched in a tension state, the spiral wire of the wire holding portion 21 tightens and fixes the branch insulated wire 6 due to the tension.
Pulls the branch fitting 1, via the retaining tool engaging portion 12,
The spiral wire of the winding portion 11 wound around the suspension line is fixed to the suspension line by tightening the suspension line 5 without causing the suspension line winding portion 11 to slip. Winding part 11 of branch metal fittings,
11 are on both sides of the retaining member engaging portion 12, the winding portion 11 in which the tension is applied to the suspension line 5 with respect to the tension in the left and right directions with respect to the retaining member engaging portion 12, The wire 5 can be tightened.

FIGS. 6 and 7 show another embodiment of the present invention. In FIG. 6 and FIG.
a and 2b) are shown below. FIG. 6 shows that the branch fitting 1 is provided with one retaining tool engaging portion 12 slightly wider between the hanging wire winding portions 11 on both sides, and in this example, a disc-shaped fitting wheel 31 is provided. , The two electric wire anchors 2a, 2b are locked.

FIG. 7 shows two anchor engaging portions 12 between the suspension wire winding portions 11 on both sides of one branch fitting 1.
a and 12b are provided with the directions in which they protrude in opposite directions, and each of the retaining member engaging portions 12a and 12b is provided with an electric wire retaining member 2a, 2b via a disk-shaped insulator 31, respectively.
Is locked.

FIG. 8 shows the use of the branch fitting 1 having the two electric wire anchoring tools 2a and 2b. A branch in which the helical wires of the hanging wire winding portions 11 and 11 are wound around the hanging wire 5 is shown. Since the fastener engaging portions 12a and 12b swell in opposite directions in the metal fitting 1, two electric wire fasteners 2a and 2b are provided.
They are locked by the retaining member engaging portions 12a and 12b, respectively. An electric wire anchor 2a is fixed to one of the anchor engaging portions 12a. In this example, the electric wire anchor 2a is used to stretch the branch insulated wire 6a in the horizontal direction. Another electric wire anchoring tool 2b is fixed to the engaging portion 12b, and in this example, the electric wire anchoring tool 2b is used for hanging the branch coated electric wire 6b directly below.

As described above, the branch fitting 1 is provided with one or more anchoring portions and two or more wire anchoring members 2a and 2b at the anchoring portion, so that a desired wire on the suspension line can be formed. When the branch fitting 1 is attached to the position, two or more covered wires can be branched and the covered wires can be stretched in desired directions.

[0034]

The branch support bracket of the present invention has a very simple structure, can be easily attached to an arbitrary position of a mounted suspension line, and can easily branch a branch wire branched from the middle of the wire. Can be held. Moreover, the work of attaching the branch support metal to the suspension wire and the work of attaching the insulated wire to the branch support are all performed only by winding the spiral wire without damaging the covering of each wire of the insulated wire. Can be easily fixed.

In addition to the new installation of the branch point of the electric wire, the transfer and expansion of the branch position can be performed without using a special hand tool or the like.
Easy removal and installation. It is possible to sufficiently cope with the addition of the branch position.

As described above, the branch support bracket of the present invention is effective in reducing the weight of the bracket, can exert its power in simplifying the operation and saving labor, and furthermore, has an electrical and mechanical advantage. Excellent in terms of reliability.

[Brief description of the drawings]

FIG. 1 is an external view of a branch fitting of an electric wire branch support according to an embodiment of the present invention.

FIGS. 2A and 2B show the appearance of an electric wire anchoring device of the electric wire branch support according to the embodiment of the present invention (A and B).

FIG. 3 shows the appearance (A, B, C) of the electric wire anchoring device with the insulator attached thereto, and a cross-sectional view (D) of the electric wire anchoring device including the insulator, according to the embodiment of the present invention. .

FIG. 4 shows the appearance of the wire branch support according to the embodiment of the present invention.

FIG. 5 is an external view in which a covered electric wire is supported by the electric wire branch support according to the embodiment of the present invention.

FIG. 6 shows an appearance of another electric wire branch support according to the embodiment of the present invention.

FIG. 7 shows an appearance of another electric wire branch support according to the embodiment of the present invention.

FIG. 8 is an external view in which two covered electric wires are supported by the electric wire branching support according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric wire branching fitting 11 Winding part 12 Retaining tool engaging part 2 Electric wire retaining tool 21 Wire holding part 3 Fitting tool 31 Fitting ring 5 Suspension wire 6 Insulated wire

Claims (6)

[Claims] 1. An electric wire branching support attached to a suspension line between struts to support a branch covered electric wire branched from a covered electric wire, wherein the branching supporter is a suspension line on both sides of a linear body. A wrapping part formed into a spiral having a helical inner diameter slightly smaller than the outer diameter of the helical member, and a retaining member engaging part formed by bulging a substantially central portion of the linear body. The electric wire branching support device further comprises an electric wire anchoring device that is engaged with the anchoring device engaging portion, and the spiral winding portions on both sides are fixedly wound around the suspension line. 2. The electric wire anchoring device according to claim 1, wherein the wire retaining member is formed by folding a separate linear body, and a spiral smaller than the outer diameter of the branch insulated wire at a position forward of the retaining portion of the linear body. An electric wire holding portion formed in a spiral having an inner diameter, wherein the electric wire anchoring tool is such that the anchoring portion is engaged with the anchoring tool engaging portion of the branch metal fitting, and the wire holding portion is attached to the branched wire. The branch support according to claim 1, wherein the branch support is wound and held. 3. The branch support according to claim 2, wherein the wire branch support includes a fitting that is interposed between the retaining part and the retaining part engaging part that are engaged with each other. 4. The fitting device according to claim 1, wherein the bent retaining portion has an outer diameter for fitting the outer periphery of the insulator, and a through hole through which the linear body of the retaining device engaging portion penetrates inside the insulator. 4. The branch support according to claim 3, wherein the branch support has an insulator. 5. The branch support according to claim 4, wherein the fitting is disposed along the inside of the folded retaining portion. 6. The branch support according to claim 4, wherein the insulator is made of a polymer or a ceramic.