JPH09180848A - Connection method of covered wires - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection method capable of restricting and preventing generated corrosion and corrosive action of conductor parts of covered wires by taking extremely simple action. SOLUTION: In the connection method of covered wires 1 and 2, conductor parts 4 and 5 of a plurality of covered wires 1 and 2 are pressure-welded and connected with each other. Here, each of the conductor parts 4 and 5 is exposed by stripping a specified covering material 3 of each of covered wires 4 and 5, each of the conductor parts 4 and 5 is integrally pressure-welded and connected by means of a joint terminal 6, and conductive paste is applied and permeated to the joint terminal 6 and each of the conductive parts 4 and 5. Thereafter, generated corrosion and corrosion of each of the conductor parts 4 and 5 are effectively prevented by winding an insulation tape 7 around the connection area of each of the conductor parts 4 and 5 including the joint terminal 6 and coating and protecting said connection area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a covered electric wire, and more particularly to a method for connecting a covered electric wire which prevents corrosion of a conductor portion exposed by peeling a covering material with time.

[0002]

2. Description of the Related Art Conventionally, as disclosed in, for example, Japanese Patent Application Laid-Open No. 5-21125, a joint is formed so that an intermediate portion or a terminal portion of each conductor portion exposed by peeling off a covering material of a plurality of covered electric wires is overlapped. A method of crimping and connecting with terminals was known. 2 and 3 are perspective views of a connection area according to the conventional connection method. The plurality of covered electric wires 1 and 2 are separated from each other by a predetermined length (near the middle portion of the covered electric wire 1 and near the end of the covered electric wire 2) of the covering material 3 to an appropriate length.
The exposed conductor portions 4 and 5 were integrally crimped and connected by the joint terminal 6 so as to overlap each other. After a while
The connection area composed of the joint terminal 6 and the conductor portions 4 and 5 was constructed such that the insulating tape 7 was wound and protected.

[0003]

However, in the above-mentioned conventional connecting method, the conductor portion is oxidized by the penetration of sulfurous acid gas, ammonia gas, etc. contained in the outside air from the winding gap of the insulating tape, Further, while pitting corrosion occurs, since the covered electric wire contains a considerable amount of water, there is a drawback that the corrosive action of the conductor portion is promoted.

It is an object of the present invention to solve the above-mentioned problems of the prior art and to provide a connection method capable of suppressing and preventing the rusting and corrosive action of the conductor portion by an extremely simple procedure. .

[0005]

SUMMARY OF THE INVENTION The object of the present invention is as follows.
A connection method for crimping and connecting conductor portions of a plurality of covered electric wires to each other, wherein a predetermined covering material of each covered electric wire is peeled off to expose each conductor portion, and the conductor portions are integrally formed by joint terminals. By crimping and connecting to the joint terminal and each exposed conductor portion, a conductive paste is applied and permeated, and then an insulating tape is wound around each conductor portion connection area including the joint terminal to This is achieved by a method for connecting a covered electric wire, which is characterized by covering and protecting the connection area.

Further, the object of the present invention is achieved by a method for connecting a covered electric wire, wherein the conductive paste contains a silver-based filler material.

According to the method for connecting covered electric wires of the present invention, a predetermined covering material of a plurality of covered electric wires is peeled off to expose each conductor portion,
A conductive filler material that constitutes a sub-component of the conductive paste, since the conductive paste is impregnated into the joint terminal and the exposed conductive parts by integrally crimping and connecting the conductive parts with a joint terminal. Maintains good conductivity in the connection area, and the synthetic resin material that constitutes the main component of the conductive paste that has penetrated into the wire bundle of the joint terminal and conductor block the invasion and movement of outside air and water content. . Further, an insulating tape wound around each conductor portion connection area including the joint terminal covers the connection area,
Protect.

Furthermore, the method of connecting the covered electric wire of the present invention is
The conductive paste containing a silver-based filler material,
It shortens the curing time during the coating and penetration.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a method for connecting covered electric wires according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a perspective view of a connection area during connection processing for explaining the connection method of the present invention, and the appearance after completion thereof is equivalent to the appearance perspective view of the conventional method shown in FIG. According to the connection method of the present invention, a plurality of covered electric wires 1 and 2 are separated from each other by a predetermined length (near the middle portion of the covered electric wire 1 and near the end portion of the covered electric wire 2) to a suitable length. Although the exposed conductor portions 4 and 5 are integrally crimped and connected so as to be overlapped by the joint terminal 6, they are equivalent to the conventional method, but there is a significant difference in the subsequent processing steps.

That is, when the joint terminal 6 integrally crimps and connects the conductor portions 4 and 5, the surface and the inner surface of the joint terminal 6 and the exposed surface of the wire bundle forming the conductor portions 4 and 5 are brought inward. , Respectively, to spray-apply and permeate the conductive paste 8 using the spray gun 9.

The conductive paste 8 is a liquid or semi-solid material containing a matrix material as a main component and a conductive filler material as a secondary component. The matrix resin is a thermoplastic resin composed of polyvinyl acetate, which is dissolved in an organic solvent such as benzene, acetone, alcohol ester, ethyl alcohol, or ketone, or obtained by emulsion polymerization of an aqueous solution of polyvinyl alcohol and vinyl acetate, or a polyvinyl acrylate ester. Resin: Liquid thermosetting resin made of epoxy, urethane resin, etc .; Thermosetting resin made of phenol resin, etc. dissolved in alcohol solvent; Liquid light or electron beam curing resin made of modified acrylic resin; It The conductive filler material is made of a metal-based or carbon-based filler material. As the metal-based filler material, particles of gold, silver, copper, aluminum, nickel, alloys thereof, oxides, fibers, whiskers, and flakes are used. As the carbon-based filler material, particulate carbon black, fibrous carbon fiber or graphite fiber, carbonaceous whiskers, flake-shaped natural graphite powder or artificial graphite powder is used, and 10 to 90 relative to the matrix resin.
It is added in the range of wt%.

In the conductive paste applied in the method for connecting the covered electric wire of the present invention having the above-mentioned structure, the conductive filler material which constitutes a sub-component of the conductive paste maintains good conductivity in the connection area, and The synthetic resin material that constitutes the main component of the conductive paste that has penetrated into the wire bundles of the joint terminal 6 and the conductor portions 4 and 5 blocks the invasion and movement of outside air and contained water.

After that, an insulating tape 7 is wound around the connection areas of the conductor portions 4 and 5 including the joint terminal 6 to cover and protect the connection areas. In order to quickly perform the winding process of the insulating tape 7, a conductive paste that can shorten the curing time is desirable, and for that purpose, a conductive paste containing a silver-based filler material is preferable.

The conductive paste is not limited to spraying with a spray gun, but may be changed to a treatment method such as brush coating or pouring.

[0015]

According to the method of connecting covered electric wires of the present invention, the predetermined covering material 3 of a plurality of covered electric wires 1 and 2 is peeled off and the conductor portions 4,
5 is exposed, and the conductor terminals 4 and 5 are connected by the joint terminal 6.
Are integrally crimped and connected to the inner and outer surfaces of the joint terminal 6 and the exposed surface of the wire bundle of the conductor portions 4 and 5,
Since the conductive paste is applied and permeated respectively, the conductive filler material constituting the sub-component of the conductive paste maintains good conductivity in the connection area and the joint terminal 6
And the synthetic resin material that constitutes the main component of the conductive paste that has penetrated into the wire bundle of the conductors 4 and 5 is contained in the outside air containing the harmful gas for rust prevention or in the covered electric wires 1 and 2 and the conductor together with the gas. Since the invasion or movement of water that promotes the corrosion of the parts 4 and 5 is blocked and prevented, it is possible to effectively prevent the rust and corrosion of the conductor parts 4 and 5 due to the peeling of the coating material 3. It was

Further, the method of connecting the covered electric wire of the present invention is
The conductive paste containing the silver-based filler material shortens the curing time at the time of coating and permeating the conductive paste, and enables the insulating tape 7 to be wound more quickly.

[Brief description of the drawings]

FIG. 1 is a perspective view of a connection area being processed by a method for connecting a covered electric wire according to the present invention.

FIG. 2 is a perspective view of a connection area being processed by a conventional method for connecting a covered electric wire.

FIG. 3 is an external perspective view of a connection area after completion by conventional connection methods and the present invention.

[Explanation of symbols]

 1, 2 Coated wire 3 Covering material 4, 5 Conductor part 6 Joint terminal 7 Insulation tape 8 Spray gun

Claims (2)

[Claims] 1. A conductor portion (4, 5) of a plurality of covered electric wires (1, 2)
Connection method of crimping each other by crimping each other, peeling off a predetermined covering material (3) of each covered electric wire (1, 2) to expose each conductor part (4, 5), and a joint terminal (6) The conductor portions (4, 5) are integrally crimped and connected by means of the joint terminal (6) and the exposed conductor portions (4, 5).
For 5), apply and infiltrate a conductive paste, and then wind an insulating tape (7) around the connection area of each conductor part (4, 5) including the joint terminal (6) and connect the connection area. A method for connecting covered electric wires (1, 2), characterized by covering and protecting. 2. The method for connecting the coated electric wires (1, 2) according to claim 1, wherein the conductive paste contains a silver-based filler material.