Double-shielding video transmission cable

Abstract

The utility model discloses a double-shielding video transmission cable which comprises a wire harness, the wire harness is composed of a plurality of video transmission wires and a functional ground wire, the video transmission wires are twisted in pairs, a conductive plastic shielding layer is extruded outside the wire harness, the conductive plastic shielding layer gathers the wire harness, a metal wire shielding layer is woven outside the conductive plastic shielding layer, and the functional ground wire is woven outside the metal wire shielding layer. And a sheath is extruded outside the metal wire shielding layer. Compared with the prior art, the cable is easy to process, and good in anti-interference performance, durability, reliability and softness.

Description

Technical Field

[0001] The utility model belongs to the field of signal transmission, and particularly relates to a double-shielded video transmission cable for transmitting audio and video signals. Background Art

[0002] A video transmission line is a data cable for transmitting audio and video signals. Its structure from the inside to the outside includes a wire harness, a metal wire braid layer, an aluminum foil polyester tape, and a sheath. The wire harness is composed of a video transmission line and a functional ground wire. The video transmission line mainly transmits audio and video signals, while the main function of the functional ground wire is to detect and control the information interaction between devices. Due to the structure of "metal wire braid layer + aluminum foil polyester tape" adopted by the existing video transmission line, the finished wire is relatively hard, with poor hand feeling, and the braiding of the metal wire braid layer and the aluminum foil polyester tape is time-consuming, resulting in low production efficiency.

[0003] In view of the above problems, the patent document CN201549249U discloses a special anti-interference integrated multimedia cable for cars, which discloses that a video transmission unit is formed by covering a video transmission line group with a conductive plastic shielding layer, and the video transmission unit, together with a power transmission wire and an audio transmission unit, is successively covered by a conductive plastic shielding layer and a sheath. The finished cable has good softness and good anti-interference performance, but the finished cable has low mechanical strength, poor durability and reliability. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the problems existing in the existing video transmission cables, and provide a double-shielded video transmission cable that is easy to process, and has good anti-interference performance, durability, reliability and softness.

[0005] The technical solution adopted by the utility model to solve its technical problems: The double-shielded video transmission cable includes a wire harness, which is composed of multiple video transmission lines and functional ground wires. The video transmission lines are paired and twisted. A conductive plastic shielding layer is extruded outside the wire harness to bundle the wire harness. A metal wire shielding layer is braided outside the conductive plastic shielding layer, and a sheath is extruded outside the metal wire shielding layer.

[0006] Optionally, the wire harness is composed of 10 video transmission lines and 5 or 10 functional ground wires.

[0007] Optionally, the sheath is a double-layer plastic sheath.

[0008] Usage method and principle of the present utility model: A conductive plastic shielding layer is used to bundle the wire harness into a single wire, and then a metal wire shielding layer is woven outside it, improving the weaving efficiency. In addition, the conductive plastic shielding layer and the sheath adopt an extrusion process, making the processing of the cable more convenient and fast, thus making the overall cable easy to process; the combination of the "conductive plastic shielding layer + metal wire shielding layer" gives the overall cable good anti-interference performance; the combination of the "conductive plastic shielding layer + sheath" gives the overall cable better softness; due to the metal wire shielding layer in the cable, the overall cable has good mechanical strength, durability and reliability.

[0009] Compared with the prior art, the present utility model has at least the following beneficial effects: The present utility model is easy to process, and has good anti-interference performance, durability, reliability and softness. Brief Description of the Drawings

[0010] Figure 1 It is a schematic cross-sectional structure diagram of the present utility model;

[0011] The reference numerals in the drawings are described as follows: video transmission line 1, functional ground wire 2, conductive plastic shielding layer 3, metal wire shielding layer 4, sheath 5. Detailed Embodiment

[0012] Embodiment 1, the present utility model will be further described below in conjunction with Figure 1 A double-shielded video transmission cable, including a wire harness. The wire harness is composed of 10 video transmission lines 1 and 5 or 10 functional ground wires 2. The video transmission lines are paired and twisted. A conductive plastic shielding layer 3 is extruded outside the wire harness. Conductive plastic is a functional polymer material obtained by mixing resin and conductive substances and processed by plastic processing methods, mainly applied in fields such as electronics, integrated circuit packaging, and electromagnetic wave shielding. The conductive plastic shielding layer bundles the wire harness, and a metal wire shielding layer 4 is woven outside the conductive plastic shielding layer, and a sheath 5 is extruded outside the metal wire shielding layer.

[0013] In order to further improve the softness of the cable, the sheath adopts a double-layer plastic sheath.

[0014] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model.

Claims

1. Double-shielded video transmission cable, including a wire harness, the wire harness consists of multiple video transmission lines (1) and functional ground wires (2), the video transmission lines are paired and twisted, characterized in that: The outer extrusion of the wire harness has a conductive plastic shielding layer (3). The conductive plastic shielding layer bundles the wire harness. A wire mesh shielding layer (4) is braided outside the conductive plastic shielding layer, and a sheath (5) is extruded outside the wire mesh shielding layer.

2. The double-shielded video transmission cable according to claim 1, wherein: The wire harness is composed of 10 video transmission lines and 5 or 10 functional ground wires.

3. The double-shielded video transmission cable according to claim 1, wherein: The sheath is a double-layer plastic sheath.

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