JPH049880B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a plating electrode wire body used directly as a plating electrode or connected to a plating electrode.

<Conventional technology> Conventionally, this type of copper (Cu), zinc (Zn), nickel (Ni), chromium (Cr), titanium (Ti), tin (Sn)
Alternatively, for plating electrode wire bodies used for plating gold (Au), silver (Ag), etc., the rubber or resin covering of the covered wire is removed to expose the core wire, and this is made into a part of the electrode body. After inserting into the hole provided and bonding with the electrode body by soldering and making it integral, the wire joint part of the electrode body and the entire exposed wire are coated with soft vinyl chloride resin. is commonly used.

However, with this type of product, there is a problem that peeling occurs between the bonding part of the electrode body made of vinyl chloride resin coated in a series, and the plating liquid gradually penetrates inside and corrodes the wire, so it is not always sufficient. It wasn't something.

Therefore, as a means to solve this problem, as shown in Japanese Patent Publication No. 57-10195, for example, a bare electric wire whose coating has been peeled off as described above is inserted into the hole of the round bar electrode body, and the The electrode body is squeezed and crimped from the outside of the part, and the two are crimped together, and a covering layer of hard vinyl chloride is formed to cover the outside of the crimped part and the root part of the inserted bare wire, and the outer surface of the covering layer is Since then, an electrode for galling has been invented and proposed in which the entire remaining bare wire is covered with a layer of acid- and alkali-resistant resin such as a soft vinyl chloride resin.

<Problems to be Solved by the Invention> However, this invented electrode for rattling is not much different from the conventional general ones as described above. This is just a coating, and as expected, a peeling phenomenon occurs between the electrode body and the coating resin, and the plating liquid gradually penetrates into the inside, and the penetrated plating liquid immediately comes into contact with the bare wire, causing damage to the wire. This method has the problem of corroding bare electric wires, and the conventional problem has not yet been sufficiently solved.

Therefore, in order to solve such conventional problems, the present invention provides a means for preventing the plating liquid from penetrating into the inside of the protective coating, instead of relying only on the adhesion of the resin material to the edges as in the past. It has a structure that actively holds it under strong pressure from the outside to prevent peeling, and also has a protective structure that prevents the plating liquid from reaching the internal wires even if the plating liquid penetrates inside the coating, and furthermore, The purpose is to improve productivity during manufacturing.

<Means for Solving the Problems> The structure of the present invention for achieving the object will be explained with reference to FIGS. 1 to 5 corresponding to the embodiments. 1' or in the wire connection hole 1a drilled on one end side of the electrode terminal 1 connected to the electrode body, a bare wire portion k obtained by peeling off the covering of the covered wire K and a covered end portion e adjacent thereto are inserted. The outer peripheral portion 1b of the inserted portion forming the hole 1a
is compressed under pressure and reduced and deformed 2 so that the two are integrally connected, and the wire sheathing part is connected to the outer peripheral part of the reduction deformation part 2 and the covered end e of the covered electric wire K located inside the reduction deformation part 2. A resin coating 3 is integrally applied to the outer circumferential portion of f by a dipping process, and the outer circumferential portion is further coated with a heat-meltable resin layer 5 and a heat-shrinkable tube layer 4. It has a heavy coating structure.

<Function> Since the present invention has such a structure, the resin coating 3 does not rely on its own adhesive properties, but its outer peripheral portion is actively protected by the resin layer 5 heated and melted. Furthermore, the outer peripheral part is wrapped and held in a compressed state by a heat-shrinkable tube layer 4, and the connecting wire K is not a bare wire but a covered wire itself, and a part of the covering portion is e
is inserted into the wire connection hole 1a, and the outer periphery of the wire is compressed and compressed in the hole. Since it does not reach the wires, it is possible to improve the lifespan.

<Examples> Examples of the present invention will be described below based on the drawings.

1 to 5 are diagrams showing a first embodiment of the present invention, in which FIG. 1 is a product, and FIGS. 2 to 5 are diagrams showing the manufacturing process over time. This embodiment is an embodiment in which a metal connecting body for connecting a conductive wire is an electrode terminal having a mounting bolt hole 1b at one end for mounting to a plating electrode plate (not shown). The electrode terminal 1 is made of brass, and the part where the bolt hole 1b is formed is shaped like a flat plate, and the other end is shaped like a round bar, and as shown in FIG. A round hole 1a for connecting an electric wire is formed. The conductive wire connected thereto is a covered wire K coated with rubber, and one end of the wire is stripped of its covering within a range shorter than the depth of the circular hole 1a to form a bare wire portion K. The end of the wire K thus obtained is inserted into the round hole 1a of the terminal 1 up to the covered end e, and the outer periphery of the round hole 1a is compressed using a high-pressure compressor to reduce the size as shown in Fig. 3. After deformation 2, these electric wires K
and the terminal 1 are integrally connected and an electrical connection is made, and then the flat connection part of the terminal 1 is protected with glycerin or the like, and the electric wire covering connected to the terminal 1 is placed in a heat-molten rubber liquid. The rubber coating 3 is applied in a continuous manner over the outer periphery of the reduced deformation 2 of the terminal 1 and the outer periphery of the covered portion f of the covered wire K connected thereto, as shown in FIG. 4. Since this coating layer is formed by a dipping process rather than a simple coating, a complete adhesion coating can be instantaneously applied to the stepped portion 3a between the terminal 1 and the wire coating part f without creating any gaps, as shown in Fig. 4. be able to.

Next, as shown in FIG. 5, a concentric cylindrical double tube having a heat-shrinkable tube 4 whose outer circumference is made of nylon and a heat-melting layer 5 made of polyamide bonded to its inner surface is placed on the resin coating layer 3. The outer periphery is heated using a heating device such as a hot gun.

By this heating operation, as shown in FIG. 1, the heat-shrinkable tube 4 is heated and shrunk, and
When the hot melt layer 5 is melted, a portion remains between the tube 4 and the resin coating layer 3 due to the contraction pressure of the tube 4, and a portion flows out to the outer end of the tube 4 and onto the coating of the electric wire K. Masses 5a and 5b are formed on the terminal 1 to cover both longitudinal ends of the resin coating layer 3, and at the same time, the outer peripheral surface of the resin coating layer 3 is compressed and tightened by the contraction pressure of the heat shrink tube 4. let it hold.

Reference numeral 6 shown at the right end in the figure is a terminal connected to the other end of the electric wire K by crimping.

The embodiment shown in FIG. 6 shows another embodiment, in which an electrode main body 1' in which a metal connecting body connected to one end of a conductive wire K is formed into a round bar-shaped zinc electrode portion 1c at the tip side. This is an example. In this case, as in the case of the above embodiment, a round hole 1a for connecting the electric wire is formed on the other end side of the electrode body 1', and one end of the covered electric wire K is covered with the bare electric wire part k. The end e is also inserted at the same time, and the outer periphery of the circular hole 1a is compressed under pressure, so that the covered end e of the covered wire K is also held directly on the electrode body 1'. The other covering means were formed in the same manner as in the first embodiment.

In this way, the connector to the covered wire K according to the present invention may be a terminal for attachment to the electrode body shown in the first embodiment, or may be the electrode body itself.

In addition, the material for the resin coating 3 may be polyvinyl chloride, ABS, or other resins in addition to rubber.
The material for the heat-melting resin layer 5 may be polyamide, low-temperature-melting nylon, adhesive, or other materials, and the material for the heat-shrinkable tube may include high-temperature nylon. In any case, these materials are selected and used so that they do not deteriorate or are not easily deteriorated by a plating solution such as chromic acid.

Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structure of these embodiments. It can be implemented with appropriate modification within the scope of achieving the following effects.

<Effects of the Invention> As is already clear from the above description, the present invention has the following effects:
By using the wire sheath itself without stripping the sheath of the insulated wire, it is possible to omit the stripping process and the subsequent sheathing of the entire wire. The wire is inserted into the hole of the metal connection body and crimped to protect the bare wire portion into the hole, and further,
A triple coating of a resin coating layer, a heat-fusible resin layer, and a heat-shrinkable tube layer is applied to the connection portion between the metal connection body and the coated wire, and the resin coating layer is compressed and held from the outer circumference by the surface tube layer. As a result, it is possible to ensure the protection of the bare wire portion that makes the electrical connection between the metal connection body and the coated conductor wire, and almost certainly prevent it from being corroded by the plating solution. As a result, it has become possible to make it durable for long-term use.

[Brief explanation of drawings]

1 to 5 show the first embodiment of the present invention, and FIG. 1 is a partially cutaway plan view of the product;
2 to 5 are partially cutaway plan views showing the manufacturing means over time, and FIG. 6 is a partially cutaway plan view showing a product of another embodiment. In the figure, 1 is the electrode terminal, 1' is the electrode body, 1
a is a wire connection hole, 1b is an outer circumferential portion, 2 is a shrinking deformation portion, 3 is a resin coating layer, 4 is a heat-shrinkable tube, 5
is a hot-melt resin layer, K is a covered wire, e is a covered end, and f is a covered portion.

Claims (1)

[Scope of Claims] 1. A bare electric wire portion with the covering of the covered electric wire K peeled off in the electric wire connection hole 1a drilled on one end side of the electrode body 1' for metal plating or the electrode terminal 1 connected to the electrode body. k and the adjacent covering end e are inserted, and the outer circumferential portion 1b of the portion where the hole 1a is formed is pressurized and compressed to be reduced and deformed 2, so that the two are integrally connected, and the outer circumference of the reduced and deformed portion 2 is and the outer periphery of the wire sheathing part f which is connected to the sheathing end e of the covered wire K located in the reduced deformation part 2 are integrally coated with a resin coating 3 by dipping, and the outer periphery is further heated. An electrode wire body for plating double coated with a melted heat-meltable resin layer 5 and a heat-shrinkable heat-shrinkable tube layer 4. 2. The electrode wire body for plating according to claim 1, wherein the connecting body connected to the covered electric wire K is the electrode terminal 1. 3. The electrode wire body for plating according to claim 1, wherein the connecting body connected to the covered electric wire K is the electrode body 1'. 4. The electrode wire body for plating according to claim 1, wherein the material of the resin coating 3 is rubber. 5. The electrode wire body for plating according to claim 1, wherein the material of the resin coating 3 is polyvinyl chloride. 6. The electrode wire body for plating according to claim 1, wherein the hot-melt resin layer 5 is made of polyamide. 7. The electrode wire body for plating according to claim 1, wherein the hot-melting resin layer 5 is made of low-temperature melting nylon. 8. The plating electrode wire body according to claim 1, wherein the heat-shrinkable tube layer 4 is made of high-density polyethylene. 9. The electrode wire body for plating according to claim 1, wherein the heat-shrinkable tube layer 4 is made of high-temperature nylon.