JPH054216Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention relates to a wire connecting device for electrically connecting the ends of a pair of electric wires, such as a power transmission line.

(Prior Art) As shown in FIG. 5, for example, a conventional electric wire connecting device cuts off the insulating covering 2 of a pair of electric wires 1 to expose the core wires 3, and connects the core wires 3 of both electric wires 1. The ends are connected by a conductive connection sleeve 4, and an insulating sleeve cover 5 is attached, which surrounds the connection sleeve 4 and the like and covers the outer periphery of the sheath 2 of both electric wires 1 at both ends. Both ends of this sleeve cover 5 are fixed to the coverings 2 of both electric wires 1 by wrapping fusion tape 6 around them. Note that this fusion tape 6 develops fusion properties due to the winding force, and is fused to the outer periphery of the sheath 2 of the electric wire 1 and the sleeve cover 5, and the fused tape 6 is fused together. do.

(Problems to be Solved by the Invention) By the way, for example, butyl rubber, etc. contained in the fusion layer of the fusion tape 6 may sag and flow out when the environmental temperature is high.

Therefore, in the conventional electric wire connecting device, butyl rubber etc. that have dripped and flowed out from the fusion tape 6 enter the inside of the sleeve cover 5 from between the sheath 2 of the electric wire 1 and the end of the sleeve cover 5, and 2 and may adhere to the surface of the core wire 3 or the connection sleeve 4. If dust that enters the sleeve cover 5 adheres to the core wire 3 of the electric wire 1 or the surface of the connection sleeve 4, or if salt adheres to the core wire 3 of the electric wire 1 or the surface of the connection sleeve 4, or if salt adheres to the core wire 3 of the electric wire 1 or the surface of the connection sleeve 4, The surfaces of the core wire 3 of the electric wire 1 and the connection sleeve 4 are susceptible to corrosion, and this corrosion increases electrical resistance. Note that if butyl rubber or the like does not adhere to the core wire 3 of the electric wire 1 or the connection sleeve 4, corrosion is unlikely to occur.

The present invention was developed in view of the above-mentioned problems, and prevents butyl rubber, etc. of the fusion layer from transmitting through the wire sheathing and adhering to the electrical connection parts, thereby reducing the increase in electrical resistance due to corrosion. The purpose of the present invention is to provide a wire connecting device that suppresses the heat loss and has good insulation properties.

[Structure of the idea]

(Means for Solving the Problems) The present invention provides a core wire 12 with a covering member 1 having insulation properties.
3, the wire connecting device connects the ends of a pair of electric wires 11 coated with a wire 11 in an electrically connected state. and a covering sleeve 16 that has a shape-retaining property in a cylindrical shape with both circumferential edges overlapped, surrounds the connection sleeve 14, and is attached to the outer periphery of the covering 13 of both the electric wires 11; It has insulating properties and shape retention in a cylindrical shape with overlapping circumferential edges, is longer than the covering sleeve 16 in the longitudinal direction of the electric wire, surrounds the covering sleeve 16, and has both the electric wires 11 The sleeve cover 18 is formed to be longer than the sleeve cover 18 in the longitudinal direction of the electric wire, and a self-fusing compound layer 23 is continuously formed on the periphery of the sleeve cover 18. and a cover body 20 having insulating properties that is wound and fused around the outer periphery of the covering body 13 of both electric wires 11.

(Function) In the present invention, a pair of electric wires 11 are connected to a connecting sleeve 1.
4, and then cover the outer periphery of the connecting portion with both circumferential edges of the covering sleeve 16 opened, thereby creating a cylindrical state in which both circumferential edges overlap due to the shape retention of the covering sleeve 16. Both ends of the covering sleeve 16 are respectively attached to the outer circumferences of the coverings 13 of both electric wires 11. Similarly, a sleeve cover 18 is attached to the outer periphery of the covering sleeve 16. After that, a cover body 20 is attached to the outer periphery of the sleeve cover 18.
By winding the cover body 20 , the cover body 20 is fixed by the fusion action of the self-fusion compound layer 23 . Then, the core wires 12 of both electric wires 11 are connected to the connecting sleeve 14.
A covering sleeve 16 covers the electrical connection parts connected by the
The sleeve cover 18 and the cover body 20 are triple-covered to ensure high insulation, and the sheathing sleeve 16 of different lengths is provided around the outer periphery of the sheathing body 13 of the electric wire 11.
The sleeve cover 18 is double-covered to prevent the butyl rubber or the like contained in the self-bonding compound layer 23 from being transmitted through the sheath 13 of the electric wire 11 and attached to the continuous connection portion.

(Embodiment) Hereinafter, the configuration of an embodiment of the present invention will be described with reference to FIGS. 1 to 4.

In Figures 1 and 2, 11 is an electric wire;
A conductive core wire 12 is covered with a covering 13 made of an insulating material such as polyethylene.

Further, 14 is a connection sleeve made of a conductive metal material such as copper or aluminum,
Fixing holes 15 are provided at both ends to fit and fix the core wires 12 of both electric wires 11, respectively.

Reference numeral 16 denotes a covering sleeve, which is made of an insulating material such as polyethylene, has a shape-retaining property in a cylindrical state in which both edges 16a of a slit provided along the cylindrical axis direction are overlapped, and has a shape-retaining property. Reduced diameter portions 1 surround the sleeve 14 and are located at both ends.
7 is attached to the outer periphery of the covering body 13 of both electric wires 11.

Reference numeral 18 denotes a sleeve cover, which is made of an insulating material such as polyethylene and is made longer in the longitudinal direction of the electric wire than the covering sleeve 16, and has a cylindrical shape overlapping both edges 18a of a slit provided along the axial direction of the cylinder. It has shape retention properties, surrounds the covering sleeve 16, and the reduced diameter portions 19 at both ends are attached to the outer periphery of the covering 13 of both the electric wires 11.

Furthermore, 20 is a cover body, and a sleeve cover 1
It is formed longer in the longitudinal direction of the electric wire than 8, and
As shown in FIGS. 3 and 4, outer layers 22 having insulation properties such as chloropyrene rubber are formed on both sides of an intermediate layer 21 made of polyethylene, and the peripheral edge of one of the outer layers 22 is A self-bonding compound layer 23 is continuously provided at a location shifted inward. This cover body 20 is adapted to be wrapped around the sleeve cover 18 and the outer periphery of both electric wires 11, and in FIG. 3, both long side edges 20a are in the winding direction, and both short side ends are 20
b corresponds to the axial direction of the electric wire 11.

In order to connect the ends of the pair of electric wires 11, first, the core wire 12 from which the sheath 13 of each electric wire 11 has been cut is inserted into the fixing holes 15 on both sides of the connection sleeve 14.
, and the core wire 12 is tightened and fixed from the outside of the connection sleeve 14 using a compression jig.

Then, while opening both edges 16a of the slit of the covering sleeve 16, the connecting sleeve 14 and the outside of the electric wires 11 on both sides are covered. As a result, due to the shape-retaining property of the covering sleeve 16 to return to its original shape, the diameter of both edges 16a is reduced so as to overlap, and the diameter-reduced portions 1 at both ends are reduced.
7 is attached to the outer periphery of the covering body 13 of both electric wires 11, respectively.

Next, while opening both edges 18a of the slit of the sleeve cover 18, the covering sleeve 16 and the outside of the electric wires 11 on both sides are covered. As a result, due to the shape retention of the sleeve cover 18 to return to its original shape, both edges 18a are reduced in diameter so as to overlap, and the reduced diameter portions 19 at both ends are connected to the covering sleeve 16 of the covering body 13 of both electric wires 11. It is applied to the outer periphery of the outer end side than the application position of .

Next, the cover body 20 is wrapped around the sleeve cover 18 and the outer periphery of the electric wires 11 on both sides, with the self-fusing compound layer 23 facing inside. At this time, the winding is performed so that both edges 20a overlap in the winding direction, and the self-fusing compound layer 2 of both ends 20b is
3 is wrapped around both electric wires 11 on the outside of both ends of the sleeve cover 18. This winding force applies pressure to the self-fusing compound layer 23 to create fusing properties, and both edges 20a are fused to the outside of the sleeve cover 18 along the axial direction, and both ends 20b is fused to the outer periphery of the electric wire 11.

As described above, after connecting the pair of electric wires 11 with the connection sleeve 14, the electrically connected portions can be easily covered by simply covering them with the covering sleeve 16 and the sleeve cover 18, and wrapping the cover body 20 around them. In addition, since the electrically connected portion is triple-covered by the covering sleeve 16, sleeve cover 18, and cover body 20, insulation is good, and the self-fusing compound layer 23 of the cover body 20 provides good insulation. The internal side, ie the electrical connection part, is sealed and waterproof.

Furthermore, even if, for example, the environmental temperature is high and, for example, butyl rubber, etc. contained in the self-fusing compound layer 23 of the cover body 20 sag and flow out, the reduced diameter part 1 of the sleeve cover 18 is attached to the outer periphery of the sheath 13 of the electric wire 11.
9 and the reduced diameter portion 17 of the covering cover 16, it is possible to prevent butyl rubber etc. from traveling along the outer periphery of the covering 13 of the electric wire 11 and adhering to the core wire 12 and the connecting sleeve 14, core wire 1
2 and the connection sleeve 14 can be prevented from corrosion, and an increase in electrical resistance can be suppressed.

Furthermore, by making the cover body 20 have a multilayer structure including an intermediate layer 21 such as polyethylene,
Self-bonding compound layer 2 on the surface of the cover body 20
It can prevent the butyl rubber etc. mentioned in 3 from seeping out.

[Effect of idea]

According to the present invention, after covering the electrical connection part where the core wires of a pair of electric wires are connected with the connection sleeve with the sheathing sleeve and the sleeve cover, the cover body having the self-fusing compound layer is wrapped around the electrical connection part, and the
The electrical connection part can be easily covered, and since a covering sleeve and a sleeve cover of different lengths are attached to the outer periphery of the wire covering, for example, butyl rubber etc. contained in the self-bonding compound layer can be used. It is possible to double prevent the wire from being transmitted through the wire sheathing and attaching to the core wire, etc., to prevent the corrosion of the wire core wire and the connection sleeve, and to suppress the increase in electrical resistance. Triple covering with the sleeve cover and cover body ensures high insulation.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing one embodiment of the wire connecting device of the present invention, Fig. 2 is an enlarged sectional view thereof, Fig. 3 is a developed view of its cover body, Fig. 4 is a sectional view thereof, and Fig. 5
The figure is a sectional view of a conventional wire connecting device. DESCRIPTION OF SYMBOLS 11... Electric wire, 12... Core wire, 13... Covering body, 14... Connection sleeve, 16... Covering sleeve, 18... Sleeve cover, 20... Cover body, 23... Self-fusion compound layer.

Claims (1)

[Claims for Utility Model Registration] A wire connecting device that electrically connects the ends of a pair of electric wires, each of which has a core wire covered with an insulating covering, comprising: a conductive wire that connects the core wires of both wires; a connection sleeve having insulation properties and shape retention in a cylindrical state with overlapping circumferential edges, surrounding the connection sleeve and surrounding the outer periphery of the covering of both electric wires; A covering sleeve to be applied, and a cylindrical shape retaining property having insulating properties and overlapping both edges in the circumferential direction, being longer than the covering sleeve in the longitudinal direction of the wire, and surrounding the covering sleeve. and a sleeve cover that is attached to the outer periphery of the covering of both the electric wires, and a sleeve cover that is longer than the sleeve cover in the longitudinal direction of the electric wire and has a self-fusion compound layer continuously formed on the peripheral edge, and the sleeve cover and An electric wire connecting device comprising: a cover body having an insulating property that is wound and fused around the outer periphery of the covering body of both electric wires.