Coaxial data cable for vehicle intelligent driving system

Abstract

The utility model provides a coaxial data cable for a vehicle intelligent driving system, which comprises a cable core, the cable core comprises a plurality of protective sleeves, the inner side walls of the plurality of protective sleeves are provided with a plurality of keels, the plurality of protective sleeves are internally provided with a plurality of binding cores, the plurality of binding cores are internally provided with copper wires, and the copper wires are connected with the keels. The plurality of protection sleeves are circumferentially arranged around one of the protection sleeves, when the data cable is bent, the protection sleeves and the binding cores provide acting force in the opposite direction for the data cable, the toughness of the data cable is improved, the keels in the protection sleeves can prevent the data cable from being excessively bent, and the service life of the data cable is prolonged. The protection sleeve can prevent the copper wires from being damaged due to friction among the plurality of copper wires in the use process, so that the conduction efficiency is reduced, when the data cable is bent, the plurality of binding cores can prevent the copper wires from being directly contacted with the protection sleeve to cause abrasion, and meanwhile, the binding cores can also improve the tensile strength and the extrusion resistance of the data cable, so that the data cable is more flexible. And the copper conductor is further protected.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle cables, in particular to a coaxial data cable for a vehicle intelligent driving system. Background Art

[0002] Coaxial data cables are widely used in the field of vehicle intelligent driving. They can achieve high-speed and stable data transmission, enabling a large amount of information collected by sensors such as cameras and radars to be quickly and accurately delivered to the processing unit. With excellent anti-interference performance, they can ensure signal quality in the complex electromagnetic environment of vehicles, reduce distortion. At the same time, their connections are stable and can adapt to vibrations and temperature changes during vehicle driving. In addition, they support the connection of multiple intelligent driving-related devices, promoting the coordinated operation of each device, and providing key data transmission guarantees for the safe and reliable operation of vehicle intelligent driving.

[0003] In the existing coaxial data cable for a vehicle intelligent driving system, the inner skin layer directly wraps the copper wire. During use, due to the bending of the coaxial data cable, the direct wrapping of the copper wire by the inner skin layer will cause gaps between the copper wire and the inner skin layer, which may cause the copper wire to rotate and rub, resulting in wear of the copper wire and deterioration of its conduction efficiency.

[0004] Therefore, it is necessary to provide a new coaxial data cable for a vehicle intelligent driving system to solve the above technical problems. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides a coaxial data cable for a vehicle intelligent driving system.

[0006] The coaxial data cable for a vehicle intelligent driving system provided by the utility model includes: a cable core, an insulating layer is wrapped outside the cable core, a shielding layer is wrapped outside the insulating layer, and an outer protective layer is wrapped outside the shielding layer;

[0007] The cable core includes a plurality of protective sleeves. A plurality of keels are provided on the inner side walls of the plurality of protective sleeves. A plurality of binding cores are provided in the plurality of protective sleeves. A copper wire is provided in the plurality of binding cores. The plurality of protective sleeves are arranged in a circular pattern around one of the protective sleeves.

[0008] Preferably, the insulating layer includes an outer skin layer, a foaming layer, and an inner skin layer. The inner skin layer is wrapped on the surface of the cable core. The foaming layer is wrapped on the surface of the inner skin layer. The outer skin layer is wrapped on the surface of the foaming layer.

[0009] Preferably, the shielding layer includes a metal foil layer and a metal braided mesh layer. The metal foil layer is wrapped on the surface of the outer skin layer. The metal braided mesh layer is wrapped on the surface of the metal foil layer.

[0010] Preferably, the outer protective layer is coated on the surface of the metal braided mesh layer.

[0011] Preferably, the metal foil layer is a single-sided aluminum-plastic composite tape, and the material of the metal braided mesh layer is tinned annealed soft copper wire.

[0012] Preferably, the binding core includes aramid fiber.

[0013] Preferably, the materials of the inner skin layer, the foaming layer and the outer skin layer are all polyethylene or polypropylene.

[0014] Preferably, the material of the outer protective layer is polyvinyl chloride.

[0015] Compared with the related art, the coaxial data cable for a vehicle intelligent driving system provided by the present utility model has the following beneficial effects:

[0016] The present utility model provides a coaxial data cable for a vehicle intelligent driving system. When the coaxial data cable is bent, the protective sleeve and the binding core provide a reaction force in the opposite direction to the coaxial data cable, increasing the toughness of the coaxial data cable. At the same time, the keel in the protective sleeve can prevent the coaxial data cable from being bent excessively, and the protective sleeve can prevent friction between multiple copper wires during use, resulting in damage to the copper wires and a reduction in the conduction efficiency. At the same time, multiple binding cores play a role in limiting and protecting the copper wires. When the coaxial data cable is bent, the multiple binding cores can prevent the copper wires from coming into direct contact with the protective sleeve and causing wear. At the same time, the binding cores can also increase the tensile strength and anti-extrusion ability of the coaxial data cable, further protecting the copper wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the coaxial data cable for a vehicle intelligent driving system provided by the present utility model;

[0018] Figure 2 is a cross-sectional view of the coaxial data cable for a vehicle intelligent driving system provided by the present utility model;

[0019] Figure 3 is Figure 1 the enlarged view at the position a shown.

[0020] Reference numerals in the figures: 1, outer protective layer; 2, shielding layer; 21, metal braided mesh layer; 22, metal foil layer; 3, insulating layer; 31, outer skin layer; 32, foaming layer; 33, inner skin layer; 4, cable core; 41, copper wire; 42, binding core; 43, protective sleeve; 44, keel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0022] Please refer toFigures 1-3 , wherein, Figure 1 is a schematic diagram of the overall structure of the coaxial data cable for the vehicle intelligent driving system provided by the present utility model; Figure 2 is a cross-sectional view of the coaxial data cable for the vehicle intelligent driving system provided by the present utility model; Figure 3 is a sectional view of the coaxial data cable for the vehicle intelligent driving system provided by the present utility model.

[0023] In the specific implementation process, as Figures 1-3 shown, it includes: a cable core 4, an insulating layer 3 is wrapped outside the cable core 4, a shielding layer 2 is wrapped outside the insulating layer 3, and an outer sheath 1 is wrapped outside the shielding layer 2;

[0024] The cable core 4 includes a plurality of protective sleeves 43, a plurality of keels 44 are arranged on the inner side walls of the plurality of protective sleeves 43, a plurality of binding cores 42 are arranged in the plurality of protective sleeves 43, a copper wire 41 is arranged in the plurality of binding cores 42, and the plurality of protective sleeves 43 are arranged in a spiral stranded arrangement around one of the protective sleeves 43;

[0025] It should be noted that the spiral stranding between the plurality of protective sleeves 43 increases the contact area between the protective sleeves 43. When the protective sleeves 43 are squeezed, the stress area is more dispersed, so that the protective sleeves 43 are not prone to relative sliding, avoiding the damage of the protective sleeves 43 caused by the friction between the protective sleeves 43. At the same time, a plurality of keels 44 are arranged on the inner side walls of the plurality of protective sleeves 43. When the coaxial data cable for the vehicle intelligent driving system is bent, the keels 44 can prevent the copper wire 41 from breaking due to excessive bending of the coaxial data cable. The binding core 42 can increase the toughness, tensile performance and anti-extrusion ability of the coaxial data cable, and can further protect the copper wire 41.

[0026] The insulating layer 3 includes an outer skin layer 31, a foaming layer 32 and an inner skin layer 33. The inner skin layer 33 is wrapped on the surface of the cable core 4, the foaming layer 32 is wrapped on the surface of the inner skin layer 33, and the outer skin layer 31 is wrapped on the surface of the foaming layer 32;

[0027] It should be noted that the material of the inner skin layer 33 is low-density polypropylene or low-density polyethylene, the material of the foaming layer 32 is low-density polypropylene or low-density polyethylene, and the material of the outer skin layer 31 is polyethylene or high-density polypropylene;

[0028] Generally, it is considered that the density of low-density polypropylene is less than 0.90 g / cm 3 ; the density of high-density polypropylene is above 0.90 g / cm 3 ; the density of low-density polyethylene is between 0.91 - 0.93 g / cm 3 ; the density of high-density polyethylene is generally greater than 0.94 g / cm 3, commonly between 0.94 - 0.97 g / cm 3 ;

[0029] When the inner skin layer 33 and the foaming layer 32 are made of lower density polypropylene or lower density polyethylene, within a certain range, the dielectric constant of the lower density polypropylene or lower density polyethylene will also decrease as the density decreases, thereby reducing the attenuation of the signal during transmission, enabling the vehicle to more accurately obtain the signal sent by the console during the intelligent driving process. However, the density cannot be too low. Polyethylene or polypropylene with too low density may cause the uniformity of the insulating layer 3 to deteriorate, thereby affecting the stability of the electrical performance;

[0030] The outer skin layer 31 made of polyethylene or higher density polypropylene can make the coaxial data cable have better mechanical strength and anti-extrusion ability, and can further protect the foaming layer 32, the inner skin layer 33 and the cable core 4. At the same time, during the signal conduction process, the cable core 4 will generate heat, and the higher density polypropylene can still better maintain the performance of the inner skin layer 33 in a high-temperature environment, preventing the coaxial data cable from becoming unstable due to the high heat generated during long-term vehicle driving.

[0031] The shielding layer 2 includes a metal foil layer 22 and a metal braided mesh layer 21. The metal foil layer 22 is coated on the surface of the outer skin layer 31, and the metal braided mesh layer 21 is coated on the surface of the metal foil layer 22.

[0032] The material of the outer protective layer 1 is polyvinyl chloride. The outer protective layer 1 is coated on the surface of the metal braided mesh layer 21. Polyvinyl chloride has a low cost and has good properties such as wear resistance and corrosion resistance, and also has the functions of waterproofing and moisture-proofing.

[0033] The metal foil layer 22 is a single-sided aluminum-plastic composite tape, and the material of the metal braided mesh layer 21 is tinned annealed soft copper wire;

[0034] The binding core 42 includes aramid fiber.

[0035] It should be noted that the single-sided aluminum-plastic composite tape refers to a strip material composed of a composite of aluminum foil and plastic film. It is compounded by dry offset printing. One side is aluminum foil and the other side is plastic film, and it has the functions of insulating on one side and conducting electricity on the other side, and can better shield the interference of external electromagnetic fields on the signal conduction of the cable core 4;

[0036] The tinned annealed soft copper wire refers to a layer of tin being plated on the annealed copper wire to enhance the flexibility and ductility of the copper wire while also enhancing the antioxidant and corrosion resistance of the copper wire, thereby increasing the service life of the coaxial data cable.

[0037] The working principle provided by the present utility model is as follows: The coaxial data cable for the vehicle intelligent driving system is usually installed in the vehicle body, vehicle base or console. At this time, the outer sheath 1 of the coaxial data cable plays a role in preventing damage due to friction between coaxial data cables, anti-corrosion, moisture-proof and waterproof. At the same time, the metal braided mesh layer 21 and the metal foil layer 22 of the shielding layer 2 can better shield electromagnetic waves and prevent electromagnetic waves from affecting the signal transmission in the cable core 4. The insulating layer 3 increases the flexibility, ductility and heat resistance of the coaxial data cable, and also has a low dielectric constant, reducing the attenuation of the cable core 4 during signal conduction, so that the components in the vehicle can obtain the signals sent by the console faster and more accurately. When installing the coaxial data cable for the vehicle intelligent driving system, it is usually bent to increase its length and avoid the copper wire 41 from breaking due to the influence of thermal expansion and contraction caused by temperature changes. When the coaxial data cable is bent, multiple protective sleeves 43 are arranged in a spiral twist, increasing the contact area between the protective sleeves 43, thus increasing the area of friction between the protective sleeves 43, and preventing the protective sleeves 43 from being damaged due to friction caused by relative sliding. The inner side wall of the protective sleeve 43 is provided with multiple keels 44 to prevent the coaxial data cable from being bent excessively and causing the copper wire 41 to break. At the same time, multiple binding cores 42 are arranged in the protective sleeve 43, and the multiple binding cores 42 are arranged in a circular pattern around the copper wire 41 to prevent the copper wire 41 from directly contacting the protective sleeve 43 and avoid damage to the copper wire 41 caused by friction. The binding cores 42 enhance the tensile strength and anti-extrusion ability of the coaxial data cable, and can further protect the copper wire 41 and extend the service life of the coaxial data cable.

[0038] The circuits and controls involved in the present utility model are all prior arts and will not be elaborated here.

[0039] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A coaxial data cable for a vehicle intelligent driving system, characterized in that, It includes a cable core (4), the cable core (4) is coated with an insulating layer (3), the insulating layer (3) is coated with a shielding layer (2), and the shielding layer (2) is coated with an outer sheath (1); The cable core (4) includes a plurality of protective sleeves (43), a plurality of keels (44) are arranged on the inner side walls of the plurality of protective sleeves (43), a plurality of binding cores (42) are arranged in the plurality of protective sleeves (43), a copper wire (41) is arranged in the plurality of binding cores (42), and the plurality of protective sleeves (43) are arranged in a circular arrangement around one of the protective sleeves (43).

2. The coaxial data cable for a vehicle intelligent driving system according to claim 1, wherein The insulating layer (3) includes an outer skin layer (31), a foaming layer (32) and an inner skin layer (33), the inner skin layer (33) is coated on the surface of the cable core (4), the foaming layer (32) is coated on the surface of the inner skin layer (33), and the outer skin layer (31) is coated on the surface of the foaming layer (32).

3. The coaxial data cable for a vehicle intelligent driving system according to claim 2, wherein, The shielding layer (2) includes a metal foil layer (22) and a metal braided mesh layer (21), the metal foil layer (22) is coated on the surface of the outer skin layer (31), and the metal braided mesh layer (21) is coated on the surface of the metal foil layer (22).

4. The coaxial data cable for a vehicle intelligent driving system according to claim 3, characterized in that, The outer sheath (1) is coated on the surface of the metal braided mesh layer (21).

5. The coaxial data cable for a vehicle intelligent driving system according to claim 4, wherein, The metal foil layer (22) is a single-sided aluminum-plastic composite tape, and the material of the metal braided mesh layer (21) is tinned annealed soft copper wire.

6. The coaxial data cable for a vehicle intelligent driving system according to claim 5, characterized in that, The binding core (42) includes aramid fiber.

7. The coaxial data cable for a vehicle intelligent driving system according to claim 6, characterized in that, The materials of the inner skin layer (33), the foaming layer (32) and the outer skin layer (31) are all polyethylene or polypropylene.

8. The coaxial data cable for a vehicle intelligent driving system according to claim 7, characterized in that The material of the outer sheath (1) is polyvinyl chloride.

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