JPS62287511A - Conductor for acoustic/image equipment and manufacture thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention and Field of Industrial Application] This invention provides sound 'Il!' for stereo, VTR, etc. This relates to conductors used for wiring equipment and imaging equipment.

[Prior Art] Conventionally, various conductors have been studied as electric wires for use in this type of application. In recent years, it has become desirable for conductors to have a small amount of organic matter, including components such as oxygen.

[Problems to be Solved by the Invention] However, it is difficult to maintain the entire conductor as high purity copper. This is because, for example, when a raw material ingot made of high-purity electrical tone is remelted or cast, in many cases, foreign material or foreign matter gets mixed in, making it impossible to maintain high purity. . In the end, conventional conductors for audio/visual equipment were unable to provide good quality audio and visual quality.

Therefore, an object of the present invention is to provide a conductor for an image device and a method for manufacturing the same, which can produce high-quality images.

[Means for Solving the Problems] The conductor for image equipment according to the present invention has a purity of 99.
The surface of more than 99% of the copper wire is coated with copper with a purity of more than 99°999%.

Further, the method for manufacturing a conductor for audio/image equipment according to the present invention is characterized in that the surface of a copper wire with a purity of 99.99% or more is coated with copper with a purity of 99.999% or more by a vapor phase method. do.

[Operations and Effects of the Invention] High-frequency signal currents for sound, images, etc. flow near the surface layer of a conductor due to the skin effect. The inventor of the present application paid attention to this fact.

That is, according to the conductor of the present invention, the core material has a purity of 99.
Although it is made of 99% or more copper, the surface layer portion through which a high frequency signal current flows is made of high purity copper with a purity of 99.999% or more. Therefore, the high-frequency current flows under small alternating current resistance and without causing a phase difference due to the influence of impurity elements.

Thus, by using the conductor for audio/image equipment according to the present invention, it is possible to produce high quality sound and images.

In addition, since the core metal and the coating metal are the same copper, I
The exposed wire becomes electrochemically stable and the risk of corrosion from the end face can be reduced. Roughly speaking, the ability of the core metal and the deposited gold 1 to become dense is also good.

Coating with copper having a purity of 99.999% or more is achieved by a vapor phase method, an i8 dipping method, a wire drawing process, or the like.

On the other hand, according to the method according to the present invention, C
Coated with copper with a purity of 99.999% or higher.

Coating by the gas phase method allows for easier purification and cleaning control than other coating methods. Therefore, the surface of the core member can be easily coated with clean and highly pure copper containing no foreign matter.

As the coating method using the vapor phase method, physical vapor deposition such as sputtering method and chemical vapor deposition such as plasma CVD method are employed1!17. If coating is performed by sputtering, a wide variety of materials can be nailed with strong adhesion. Furthermore, coating by chemical vapor deposition utilizes a gas that is difficult to generate, and enables high-quality deposition with high purity.

By gas phase method. After coating with zero-purity copper, cold plastic working is preferably performed so that the cross-sectional area reduction rate is 20 to 90%. This plastic working improves the quality of the sound and images obtained.

If the area reduction rate is less than 20%, the improvement effect on sound and images will not be very sufficient. Such an improvement effect is almost saturated when the area reduction rate is about 90%. Therefore, if the area reduction ratio exceeds 90%, further improvement effects cannot be achieved, and instead, the flexibility is reduced.

[Example] Example 1 The surface of a copper wire with f111 degree of 99.99% was coated with a purity of 99.99% by vacuum evaporation. ．． Coated with 999% copper. Thus j
! The obtained conductor was cold-worked using a die at +iJ so that the reduction in cross-sectional area was 70%. FIG. 1 is a sectional view showing a conductor 1 obtained in this manner. The core part 2 is made of copper with a purity of 99.99%, and the surface part 3 is made of copper with a purity of 99.9%.
It is 99% copper. Further, the outer diameter was 0.12 mm, and the thickness of the high-purity copper coating was 0.01 mm.

In order to use this conductor 1 as a wiring wire for a VTR,
As shown in Figure 2, it was processed into an electric wire as a 7-strand conductor.

And VTR? The condition of the tel/image was compared with that of a conventional electric wire made of a conductor of the same wire diameter made of a non-rope-resistant copper soft material. As a result, when Conductor 1, which is an example of the present invention obtained as described above, was used, the sound was extremely rich and clear, and the image was clear.

Example 2 The surface of a copper wire with a purity of 99.99% was coated with copper with a purity of 99.999% by the plasma CVD method to produce a curved force body 4 as shown in FIG. 'f this
i 17u,! When processed and used as a lead material for a stereo i~ transistor, the i? N was clear and good quality sound effects were obtained.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing a conductor that is divided by 1!7 according to the first embodiment. FIG. 2 is a cross-sectional view of a stranded conductor using the conductor 1 shown in FIG. FIG. 3 is a cross-sectional view of the lζ tape-shaped conductor obtained in Example 2. (26 others, Figure 2)

Claims (5)

[Claims] (1) On the surface of copper wire with a purity of 99.99% or more,
．． A conductor for audio/image equipment that is coated with over 999% copper. (2) A method for manufacturing a conductor for audio/image equipment, which comprises coating the surface of a copper wire with a purity of 99.99% or more with copper having a purity of 99.999% or more by a vapor phase method. (3) The method for manufacturing a conductor for audio/image equipment according to claim 2, wherein the coating by the vapor phase method is performed by a sputtering method. (4) The method for manufacturing a conductor for audio/image equipment according to claim 2, wherein the coating by the vapor phase method is performed by a chemical vapor deposition method. (5) After the coating process, the cross-sectional area reduction rate is 20 to 90%.
A method for manufacturing a conductor for audio/image equipment according to claims 2 to 4, wherein cold plastic working is performed so that the conductor falls within the range of .