High-efficiency anti-interference vehicle-mounted multimedia audio-video wire rod

Abstract

The utility model relates to the technical field of vehicle-mounted cables, in particular to a high-efficiency anti-interference vehicle-mounted multimedia audio-video wire rod. A plurality of signal line groups and control identification lines are wound around the power line, then the power line is sequentially coated with the wrapping layer, the braiding layer and the outer coating layer, the tinned copper wires are braided on the periphery of the power line, the tinned copper wires are braided on the periphery of the power line so as to play a shielding role, and the influence of current transmission on signal transmission of the signal line groups is reduced. Each signal wire group comprises a pair-twisted signal core wire and a first hot-melting double-sided aluminum foil layer wrapping the periphery of the signal core wire, the first hot-melting double-sided aluminum foil layer is used for shielding in a hot-melting double-sided aluminum foil wrapping mode, the inner layer and the outer layer form a complete shielding layer after the double-sided aluminum foil is wrapped, and the hot-melting aluminum foil can be adhered after being heated, so that the signal core wire is shielded. The structure of the differential signal pair is more stable, the wire rod can meet the high-speed transmission requirement, meanwhile, the wire rod has the advantages of being efficient in interference resistance, stable in signal transmission, high in durability and the like, and the influence of the electromagnetic environment in an automobile can be effectively resisted.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle-mounted cables, and in particular to a highly efficient and anti-interference vehicle-mounted multimedia audio and video cable. Background Art

[0002] With the popularization of new energy vehicles and the continuous development of technology, the cost of automobiles has been reduced, the degree of automobile intelligence and networking has been continuously improved, and the communication demand between various electronic devices such as sensors and controllers in the car is growing. However, traditional in-vehicle multimedia audio and video cables are usually wrapped with a shielding structure. This cable has many deficiencies in anti-interference ability, signal transmission rate, etc., and it is difficult to meet the high requirements of modern car audio and video systems. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the present application provides a high-efficiency, anti-interference in-vehicle multimedia audio and video cable, comprising a power cord located in the center, a plurality of signal wire groups and a control identification wire wrapped around the power cord, and a winding layer, a braided layer and an outer layer sequentially wrapped around the periphery, wherein the periphery of the power cord is woven with tinned copper wires, the signal wire group comprises a twisted pair of signal core wires, and a first hot-melt double-sided aluminum foil layer wrapped around the periphery of the signal core wires.

[0004] Preferably, the diameter of the tinned copper wire is 0.1-0.2 mm.

[0005] Preferably, the signal core wire includes a plurality of twisted tinned conductors and an insulating layer covering the tinned conductors.

[0006] Preferably, the control identification line is distributed between the signal line group and the wrapping layer.

[0007] Preferably, the power line, signal line group and control identification line are twisted into a cable with a twisting pitch of 80-90 mm.

[0008] Preferably, the braided layer is woven by conductive copper wires.

[0009] Preferably, the control identification line includes a central conductor, and an inner coating layer and a second hot-melt double-sided aluminum foil layer coated on the central conductor.

[0010] Preferably, the wrapping layer is wrapped with double-sided aluminum foil, and the wrapping layer is in contact and conduction with the braided layer, the first hot-melt double-sided aluminum foil layer and the second hot-melt double-sided aluminum foil layer, and the first hot-melt double-sided aluminum foil layer is in contact and conduction with the tinned copper wire.

[0011] As can be seen from the above, the following beneficial effects can be obtained by applying the present application: by wrapping a plurality of signal line groups and control identification lines around the power line, and then sequentially coating the wrapping layer, the braiding layer and the outer layer, the outer periphery of the power line is woven with tinned copper wire, and the tinned copper wire is woven around the outer periphery of the power line to play a shielding role, thereby reducing the influence of current transmission on the signal transmission of the signal line group. The signal line group includes a twisted pair of signal core wires, and a first hot-melt double-sided aluminum foil layer wrapped around the outer periphery of the signal core wire. The first hot-melt double-sided aluminum foil layer is wrapped by hot-melt double-sided aluminum foil as a shield. After the double-sided aluminum foil is wrapped, the inner and outer layers form a complete shielding layer. The hot-melt aluminum foil will bond after heating, making the structure of the differential signal pair more stable, so that the wire material not only meets the high-speed transmission requirements, but also has the advantages of high efficiency anti-interference, stable signal transmission, strong durability, etc., and can effectively resist the influence of the electromagnetic environment inside the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the description of the embodiments of the present application or the prior art are briefly introduced below. Obviously, the drawings described below are only part of the embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0013] Figure 1 This is a schematic diagram of the structure of a highly efficient anti-interference vehicle-mounted multimedia audio and video cable according to an embodiment of the present application;

[0014] Figure 2 This is a schematic diagram of the structure of a signal line group according to an embodiment of the present application;

[0015] Figure 3 This is a schematic diagram of the control identification line structure of an embodiment of the present application. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] Example

[0018] In order to solve the above technical problems, this embodiment provides a highly efficient anti-interference vehicle-mounted multimedia audio and video cable, such as Figure 1-3As shown, it includes a power line 10 located in the center, a plurality of signal line groups 20 and a control identification line 30 wrapped around the power line 10, and a wrapping layer 40, a braided layer 50 and an outer layer 60 wrapped around the periphery in sequence. The periphery of the power line 10 is woven with tinned copper wires 70. By weaving the tinned copper wires 70 around the periphery of the power line 10, a shielding effect is played to reduce the influence of current transmission on the signal transmission of the signal line group 20. The signal line group 20 includes a twisted signal core wire 21 and a first hot-melt double-sided aluminum foil layer 22 wrapped around the periphery of the signal core wire 21. The first hot-melt double-sided aluminum foil layer 22 is wrapped by hot-melt double-sided aluminum foil as a shield. After the double-sided aluminum foil is wrapped, the inner and outer layers form a complete shielding layer. The hot-melt aluminum foil will bond after heating, making the structure of the differential signal pair more stable, so that the wire material not only meets the high-speed transmission requirements, but also has the advantages of high efficiency anti-interference, stable signal transmission, strong durability, etc., and can effectively resist the influence of the electromagnetic environment inside the car.

[0019] Specifically, the signal core wire 21 includes a plurality of twisted tinned conductors 211 and an insulating layer 212 covering the tinned conductors 211. There are 7 tinned conductors 211, and the twisted structure is 1 in the center and 6 around the periphery. The insulating layer 212 is made of modified foamed PP material. The foamed PP material has a small dielectric constant. While ensuring the small SI requirement of the wire, the wire diameter can be smaller, and the material has good temperature resistance and can meet the requirements of -40 to 105°C.

[0020] Furthermore, a first hot-melt double-sided aluminum foil layer 22 is wrapped around the outer periphery of the insulating layer 212 of the signal core wire 21. The first hot-melt double-sided aluminum foil layer 22 plays a shielding role, and the hot-melt aluminum foil will adhere after heating, making the structure of the differential signal pair more stable.

[0021] Furthermore, the control identification line 30 includes a central conductor 31, an inner layer 32 and a second hot-melt double-sided aluminum foil layer 33 coated on the central conductor 31. The inner layer 32 is a modified PP material, and the central conductor 31 is 7 tinned conductors, and its twisted structure is 1 in the center and 6 around the periphery. The structure of the second hot-melt double-sided aluminum foil layer 33 is the same as that of the first hot-melt double-sided aluminum foil layer 22, and a double-conductor aluminum foil is used as a shielding structure to make the structure of the differential signal pair more stable, improve the anti-interference ability of the wire, and ensure the signal transmission rate.

[0022] In the above solution, the wire diameter of the tinned copper wire 70 is 0.1-0.2 mm, and the tinned copper wire 70 is wrapped around the power cord 10 by an oblique wrapping structure. In some embodiments, the tinned copper wire 70 can be used as a negative electrode of the GND power supply, and the tinned copper wire 70 and the braided layer 50 can be used together as a ground wire, reducing the use of a separate ground wire core wire, saving space and reducing costs.

[0023] Furthermore, the power line 10, the signal line group 20 and the control identification line 30 are twisted into a cable with a twisting pitch of 80-90mm. To ensure that the overall structure of the wire is round, a layer of wrapping layer 40 is wound after the cable is formed. The wrapping layer 40 is wrapped with double-sided aluminum foil, and then a braided layer 50 is woven with conductive copper wire. Finally, an outer layer 60 is extruded. The outer layer 60 is made of flame-retardant PVC material with a temperature resistance of -40 to 105°C and a hardness of 85A, which is used for fixed structure and protection, so that the wire has the advantages of high efficiency and anti-interference, stable signal transmission, strong durability, etc., can effectively resist the influence of the electromagnetic environment inside the car, ensure the clarity and stability of audio and video signals, and the transmission rate can reach up to 80Gbps, supporting 16K@60Hz or two 8K@120Hz video outputs. At the same time, its excellent durability and flame retardant properties also improve the safety of the vehicle.

[0024] In the above scheme, the control identification line 30 is distributed between the signal line group 20 and the wrapping layer 40, and the wrapping layer 40 is wrapped with double-sided aluminum foil, and the double-sided aluminum foil of the wrapping layer 40 is in contact and conduction with the braided layer 50, the first hot-melt double-sided aluminum foil layer 22 and the second hot-melt double-sided aluminum foil layer 33 respectively, and the first hot-melt double-sided aluminum foil layer 22 is in contact and conduction with the tinned copper wire 70. Such a design can make the entire wire form an integral shielding structure, obtain better EM I performance, and thus achieve the effect of efficient anti-interference. The wire not only meets the high-speed transmission requirements, but also has the advantages of efficient anti-interference, stable signal transmission, strong durability, etc., and can effectively resist the influence of the electromagnetic environment inside the car.

[0025] In summary, the present application scheme wraps a number of signal line groups and control identification lines around the power line, and then sequentially covers the wrapping layer, the braiding layer and the outer layer. The outer periphery of the power line is woven with tinned copper wire. By weaving the tinned copper wire around the outer periphery of the power line, a shielding effect is achieved, thereby reducing the impact of current transmission on the signal transmission of the signal line group. The signal line group includes a twisted pair of signal core wires, and a first hot-melt double-sided aluminum foil layer wrapped around the outer periphery of the signal core wire. The first hot-melt double-sided aluminum foil layer is wrapped with hot-melt double-sided aluminum foil as a shield. After the double-sided aluminum foil is wrapped, the inner and outer layers form a complete shielding layer. The hot-melt aluminum foil will bond after heating, making the structure of the differential signal pair more stable, so that the wire material not only meets the high-speed transmission requirements, but also has the advantages of high efficiency anti-interference, stable signal transmission, strong durability, etc., and can effectively resist the influence of the electromagnetic environment inside the car.

[0026] The above-described implementation methods do not constitute a limitation on the protection scope of the technical solution. Any modification, equivalent replacement and improvement made within the spirit and principle of the above-described implementation methods shall be included in the protection scope of the technical solution.

Claims

1. A highly efficient anti-interference vehicle-mounted multimedia audio and video cable, characterized by: The invention comprises a power line (10) located in the center, a plurality of signal line groups (20) and a control identification line (30) wrapped around the power line (10), and a wrapping layer (40), a braided layer (50) and an outer layer (60) wrapped around the periphery in sequence, wherein the periphery of the power line (10) is braided with tinned copper wires (70), and the signal line group (20) comprises a twisted pair of signal core wires (21), and a first hot-melt double-sided aluminum foil layer (22) wrapped around the periphery of the signal core wires (21).

2. The high-efficiency anti-interference vehicle-mounted multimedia audio-visual cable according to claim 1, characterized in that: The tinned copper wire (70) has a wire diameter of 0.1-0.2 mm.

3. The high-efficiency anti-interference vehicle-mounted multimedia audio-visual cable according to claim 1, characterized in that: The signal core wire (21) comprises a plurality of twisted tinned conductors (211) and an insulating layer (212) covering the tinned conductors (211).

4. The high-efficiency anti-interference vehicle-mounted multimedia audio-visual cable according to claim 1, characterized in that: The control identification line (30) is distributed between the signal line group (20) and the wrapping layer (40).

5. The high-efficiency anti-interference vehicle-mounted multimedia audio-visual cable according to claim 1, characterized in that: The power line (10), the signal line group (20) and the control identification line (30) are twisted into a cable, and the twisting pitch is 80-90 mm.

6. The high-efficiency anti-interference vehicle-mounted multimedia audio-visual cable according to claim 1, characterized in that: The braided layer (50) is braided by conductive copper wires.

7. The high-efficiency anti-interference vehicle-mounted multimedia audio-visual cable according to claim 6, characterized in that: The control identification line (30) comprises a central conductor (31), an inner coating layer (32) and a second hot-melt double-sided aluminum foil layer (33) covering the central conductor (31).

8. The high-efficiency anti-interference vehicle-mounted multimedia audio-visual cable according to claim 7, characterized in that: The wrapping layer (40) is wrapped with double-sided aluminum foil, and the wrapping layer (40) is in contact and conduction with the braided layer (50), the first hot-melt double-sided aluminum foil layer (22) and the second hot-melt double-sided aluminum foil layer (33), and the first hot-melt double-sided aluminum foil layer (22) is in contact and conduction with the tinned copper wire (70).

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