JPS6134661Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a shielding tape for electric wires, and its purpose is to prevent oxidation and damage to the metal surface forming the conductive layer and to facilitate terminal treatment. It is something.

That is, in the present invention, a conductive layer made of a highly conductive metal is provided on the surface of a base film made of plastic film, and a drain wire is fixed to the conductive layer along its longitudinal direction. On the other hand, the gist is that the conductive layer and drain line are constructed so that the coating film is polymerized.

Hereinafter, specific embodiments of the present invention will be described with reference to the illustrative drawings. Fig. 1 is a drawing showing a state in which a part of the electric wire A is peeled off, and in the drawing, 1 and 1 are a plurality of wires insulated through coatings 1' and 1' made of vinyl, etc. Conductor, 2 is both conductor 1,1
3 is a shielding tape according to the present invention, and 4 is a sheath forming an outer skin.

2 and 3 are drawings showing a first embodiment of the shielding tape 3 according to the present invention, and 3' indicates a base film. The base film 3' is formed by providing a long strip of plastic film as a material.
The conductive layer 5 is formed by depositing a highly conductive metal such as copper or aluminum on the surface of the base film 3', or by laminating a highly conductive metal foil such as copper or aluminum on the surface of the base film 3'. form. A drain wire 6 is fixed onto the conductive layer 5 along its longitudinal direction, and a plastic film is pasted onto the conductive layer 5 so as to tightly cover the conductive layer 5 and the drain wire 6. The coating film 7 is formed by the following steps. FIG. 4 is a drawing showing another embodiment, in which a base film 3' and a covering film 7 are integrally formed.

Although not shown in the drawings, it is possible to use a semiconductive material such as conductive vinyl as the coating film 7, and to polymerize the semiconductive material on the conductive layer 5 as the coating film 7. As the coating 7, for example, iron,
It is possible to form the coating film 7 by vapor depositing or laminating a metal such as nickel, and to polymerize the coating film 7 on the conductive layer 5.

The semiconducting material can also be obtained by relatively sparsely depositing a highly conductive metal such as copper or aluminum on the film, in addition to the conductive vinyl.

The present invention is constructed as described above.
With the above configuration, it has become possible to mechanically and chemically protect the conductive layer formed of a highly conductive metal. That is, in the present invention, as described above, by overlapping the coating film on the conductive layer formed of a highly conductive metal on the surface of the base film, mechanical damage to the conductive layer is prevented. It is possible to prevent damage to the conductive layer due to external pressure, and as a result, it has become possible to prevent nozzles from occurring due to damage to the conductive layer.

In addition, in the present invention, as mentioned above, the coating film is polymerized in close contact with the conductive layer formed of a highly conductive metal, thereby blocking air contact with the conductive layer. As a result, oxidation of the conductive layer can be prevented, and as a result, an excellent electrostatic shielding effect can be obtained.

In addition, in the present invention, as described above, the drain wire is fixed to the conductive layer along its longitudinal direction, and the drain wire is integrally covered with the coating film, thereby achieving the same effect. It has now become possible to easily perform terminal processing of the shield tape, that is, connection work to connectors, terminal boards, etc.

In other words, in the case of conventional shielding tapes, when connecting the terminal portion to a connector, terminal board, etc., each drain wire should be carefully connected to avoid contact with other drain wires covered within the same cable. The work of inserting an insulating converter tube into the end of the drain wire is normally done as part of the terminal processing work, but the work of inserting an insulating converter tube into the end of the drain wire is The reality is that it is not easy, and it is extremely troublesome.

However, in the case of the shield tape according to the present invention, as shown in FIG. 5, by cutting off the end of the shield tape except for the part where the drain wire is covered, The state where the part is surrounded by the tape and the coating film, that is, the same state as when the insulating tube is inserted into the end part of the drain wire in the shield tape of the conventional structure,
It has become possible to obtain the shield tape by simply cutting off the end of the shield tape except for the part to which the drain wire is fixed.

By forming the coating film using a semiconductive material such as conductive vinyl, in addition to the above effects, it is possible to slow down sudden changes in potential, and as a result, vibration noise can be reduced. It became possible to prevent the occurrence of

Furthermore, by forming a coating film on the base film by vapor depositing or laminating metal such as iron or nickel, it is possible to obtain a magnetic shielding effect in addition to the above-mentioned effects.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a state in which a part of the electric wire using the shielding tape according to the present invention is peeled off;
3 and 3 are drawings showing the first embodiment, in which FIG. 2 is an enlarged perspective view showing the unfolded state, and FIG. 3 is a sectional view of the same side. FIG. 4 is an enlarged view of the second embodiment in an expanded state, and FIG. 5 is an enlarged perspective view of the operating state of terminal processing in the first embodiment. A...Electric wire, 1...Conducting wire, 1'...Coating, 2...
... Intermediate material, 3 ... Shield tape, 3' ... Base film, 4 ... Sheath, 5 ... Conductive layer, 6 ...
Drain wire, 7... coating film.

Claims (1)

[Claims for Utility Model Registration] (1) A conductive layer is provided on the surface of the base film, a drain wire is fixed to the conductive layer along the longitudinal direction of the tape, and the conductive layer and drain wire are coated. Shield tape for electric wires made of polymerized film. (2) The shielding tape for electric wires according to claim 1 of the utility model registration claim, wherein the coating film is formed of a semiconductive material such as conductive vinyl. (3) The shielding tape for electric wires according to claim 1, wherein the coating film is formed by depositing or laminating a conductive metal such as iron or nickel.