JP3109270U - Signal transmission cable structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a signal transmission cable structure in which high and low frequencies do not interfere with each other and are not affected by the outside world.
SOLUTION: One or more outer covering layers 30, a core member 20 having two transmission media each provided with an insulating layer, and a layer provided between the core member 20 and the outer covering layer 30 are provided. The above-described metal woven layer 42 and the intermediate material layer 40 composed of the PVC conductive layer 41 covered with the paper wrapper layer 43 constitute a multi-core conductor structure.
[Selection] Figure 2

Description

  The present invention relates to the structure of a signal transmission cable, is not affected by magnetic fields and static electricity, and has low attenuation due to low attenuation, and is particularly suitable for stereo speakers, guitar wires, and microphones.

Signal transmission cables having a known structure are roughly divided into those using a single conductor or those using a multi-core conductor. An example of a known structure using a single conductor is a copper shaft cable structure as shown in FIG. 1. The feature is that the insulator covered by the conductor 1 is extruded into a circular tube state. PE2 and further composed of an aluminum mylar tape 3, a copper wire knitted layer 4, and a PVC envelope 5.

However, as a defect of the known structure, the insulation effect of the PE pipe described above as an example cannot be said to be excellent, and the copper wire woven layer shuts out appreciation from the outside world by 100%. Since this is impossible, it is easily affected by magnetic fields, high frequencies, static electricity, etc., and distortion and reflection are likely to occur during transmission. In view of these drawbacks, the signal transmission cable structure of the present invention is provided so that high and low frequencies are transmitted separately, do not interfere with each other, and reproduce a more realistic sound without being affected by a magnetic field or static electricity. To do.

It is mainly composed of a core part, an intermediate material layer, and one or more outer coating layers.
The core part is two transmission media each provided with an insulating layer. In the intermediate material, the intermediate part is provided between the core part and the outer coating layer. It is composed of a coated PVC conductive layer.

  According to the present invention, a multi-core conductor (pure silver conductor and enamel single crystal unidirectional pure copper conductor) in the core part is insulated by a PE insulating layer and a PE foam layer, respectively, and an appropriate interval is opened between the two conductors. Thus, the high and low frequencies of the signal are transmitted separately, and the high and low frequencies do not interfere with each other, thereby reducing the skin effect. Furthermore, since the intermediate material layer (PVC conductive layer, silver wire woven layer, PTEF layer) has a shielding action against the outside world, it can effectively prevent the generation of a magnetic field, prevent the influence of static electricity, etc. Depending on the paper layer, cotton yarn filling layer, etc., the degree of flexibility increased and the appearance molding became easier. As a whole, the attenuation was reduced, and the quality could be improved more realistically.

As shown in FIG. 2, the first embodiment of the present invention is a three-dimensional external view of a guitar wire. A core material portion 20 is coated with a pure silver conductor 21 with a PE insulating layer 22, and the PE insulating layer 22 is further enameled. It is covered with a crystal unidirectional pure copper conductor 23. Further, a PE foam layer 24 is provided on the outer side. Therefore, both the pure silver conductor 21 and the enamel single crystal unidirectional pure copper conductor 23 are insulated from each other. An intermediate material 40 composed of a layer 41, a silver wire knitted fabric layer 42, and a wrapping paper layer 43 is provided, and finally the outermost layer is formed by a first outer coating layer 30 and a second outer coating layer 31 composed of polyvinyl chloride. Is covered to form a complete signal transmission cable.

  As shown in FIG. 3, in the second embodiment, the core material portion 20 is coated with a pure silver conductor 21 with a PE insulating layer 22, and the outer side of the PE insulating layer 22 is further enamel single crystal unidirectional pure copper conductor 23, It is covered with a PE foam layer 24 to insulate both the pure silver conductor 21 and the enamel single crystal unidirectional pure copper conductor 23. On the outside of the PE foam layer 24, an PVC conductive layer 41, a silver wire woven layer 42, a PTFE (rolled with foamed Teflon (registered trademark) tape) layer 44, and an intermediate material 40 composed of the silver wire woven layer 45 are formed. Finally, the outermost part is covered with the first outer covering layer 30 and the second outer covering layer 31 made of polyvinyl chloride, thereby forming a complete signal transmission cable.

As shown in FIG. 4, in the third embodiment, a microphone line structure is used, and the core material portion 20 has a pure silver conductor 21 covered with a PE insulating layer 22, and the PE insulating layer 22 is further made of a single enamel single crystal. Covered with a directional pure copper conductor 23 and a PE foam layer 24, the two conductors of the pure silver conductor 21 and the enamel single crystal single-direction pure copper conductor 23 are insulated, respectively. In addition, the filling layer 46 wraps the core part 20 inside to make the entire wire flexible and easy to mold. Further, the entire intermediate material 40 is wrapped with the silver wire woven layer 45 and the wrapping layer 43, and finally the first outer covering layer 30 composed of polyvinyl chloride covers the outermost side, thereby forming a complete signal transmission cable. .

It is a three-dimensional external view of a signal transmission cable having a known structure. It is a whole structure exploded view of the 1st example of the present invention. It is a whole structure exploded view of the second embodiment of the present invention. It is a whole structure exploded view of the third embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conductor 2 PE insulating layer 3 Aluminum mylar tape 4 Copper wire woven layer 5 PVC covering body 20 Core material part 21 Pure silver conductor 22 PE insulating layer 23 Enamel single crystal unidirectional pure copper conductor 24 PE foam layer 30 First outer covering layer 31 Second outer coating layer 40 Intermediate material 41 PVC conductive layer 42 Silver wire woven layer 43 Paper wrapper layer 44 PTFE layer 45 Silver wire woven layer 46 Filling layer

Claims (8)

In the structure of signal transmission cable mainly composed of core part, intermediate material layer, outer coating layer,
A core part having two transmission media each provided with an insulating layer;
One or more outer coating layers;
An intermediate material layer comprising a PVC conductive layer provided between the core material portion and the outer coating layer and coated with one or more metal wire woven layers and a paper wrapper layer;
A signal transmission cable structure that reliably transmits signals regardless of the level of the signal due to the structure of the multicore conductor described above. 2. The structure of a signal transmission cable according to claim 1, wherein one of the core parts is a pure silver conductor, and the outside of the pure silver conductor is covered with a PE insulating layer.   2. The enamel single crystal unidirectional pure copper conductor is another one of the core parts, and the outer surface of the enamel single crystal unidirectional pure copper conductor is covered with a PE insulating layer. Structure of signal transmission cable.   2. The structure of a signal transmission cable according to claim 1, wherein the one or more metal wire knitted layers are silver wire.   2. The structure of a signal transmission cable according to claim 1, wherein the intermediate material is a PVC conductive layer, and the metal wire woven layer and the wrapping paper layer constitute a guitar wire structure.   2. The structure of a signal transmission cable according to claim 1, wherein the intermediate material comprises a PVC conductive layer, a metal wire woven layer, a PTEF layer and a metal wire woven layer to form a visual transmission cable structure.   2. The structure of a signal transmission cable according to claim 1, wherein the core parts are independent of each other and constitute a structure of a microphone wire. 8. The structure of a signal transmission cable according to claim 7, wherein the intermediate material is composed of a PVC conductive layer, a cotton yarn filling layer, a metal wire knitted layer and a paper wrapper layer.

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