Novel coaxial cable structure for vehicle

Abstract

The utility model relates to a novel coaxial cable structure for a vehicle, which sequentially comprises a wire core, a metal wrapping tape, a shielding layer and a sheath layer from inside to outside, and the wire core is composed of a 7 / 0.26 bare copper conductor and a foaming PP insulating layer and has the outer diameter of 2.02-2.18 mm; the metal wrapping tape is a layer of double-sided metal wrapping tape wrapping the outside of the wire core; the shielding layer is formed by weaving tinned copper-clad aluminum alloy on the surface of a metal wrapping tape, and 16 ingots and 5 tinned copper-clad aluminum alloy conductors with the monofilament diameter of 0.101-0.200 mm are evenly attached to the surface of the metal wrapping tape. According to the coaxial cable shielding structure for the vehicle, the defect that the cost of the existing coaxial cable for the vehicle is high is overcome, the copper weight consumption is reduced, meanwhile, the related agreement of the USCAR17 standard on wires is met, the stability of the coaxial cable is improved, and the stability and the reliability of signal transmission are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of coaxial cables, and specifically refers to a novel coaxial cable structure for vehicles. Background Art

[0002] Coaxial cable is already a very mature product. It is named because the central copper wire and the mesh conductive layer are coaxial. Together, they form a transmission loop for current. Coaxial cable is mainly used to transmit radio frequency signals or high-definition camera signals, because when high-frequency current is transmitted through ordinary wires, ordinary wires actually radiate signals like radio antennas, resulting in transmission signal power loss, so the received signal strength will be significantly weakened.

[0003] As modern cars integrate assisted autonomous driving and intelligent assistance, people's demand for smart cockpits is also increasing, which is reflected in the mutual penetration of human-machine interaction, making the application of automotive coaxial cables more extensive. Traditional automotive coaxial cables generally use metal tape and tinned copper braided wire structure as the outer conductor. Although the shielding performance of the outer conductor using metal tape and tinned copper braided wire structure is very good, it greatly increases the cost of coaxial cables in an era of rapidly rising copper prices. Therefore, more challenges are posed in terms of how to reduce costs. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a novel coaxial cable structure for vehicles, which can reduce the copper weight by 32.9%, making the wire material lighter and reducing the cost.

[0005] The utility model is achieved in this way:

[0006] A new type of automotive coaxial cable structure, from inside to outside, includes: wire core, metal tape, shielding layer, sheath layer,

[0007] The wire core is composed of a 7 / 0.26 bare copper conductor and a foamed PP insulation layer and has an outer diameter of 2.02 to 2.18 mm;

[0008] The metal tape is a double-sided metal tape coated on the outside of the wire core;

[0009] The shielding layer is woven on the surface of the metal tape with tinned copper clad aluminum alloy, and 16 ingots of 5 single wires with a diameter of 0.101-0.200 mm are used to evenly adhere to the surface of the metal tape.

[0010] Furthermore, the sheath layer is made of PVC material.

[0011] The utility model has the advantages that: the shielding structure of the vehicle coaxial cable of the utility model overcomes the high cost of the existing vehicle coaxial cable, reduces the copper weight, and achieves the following advantages:

[0012] 1. The wire is lighter:

[0013] Traditional automotive coaxial data cables use a metal tape + tinned copper braided shielding structure to increase shielding effectiveness. The density of a tinned copper wire single wire 0.10TD is 8.89g / cm3, while the density of a tinned copper clad aluminum alloy is 5.18g / cm3. The utility model uses a tinned copper clad aluminum alloy shielding layer. Under the same braiding density, the utility model uses a tinned copper clad aluminum alloy shielding to achieve the same shielding effect as a tinned copper shielding, while the copper weight can be reduced by 32.9%, making the wire lighter.

[0014] 2. Reduce costs:

[0015] The braided structure of the utility model adopts 16 spindles and 5 single wires with a diameter of 0.101-0.200 mm, which can reduce the cost by 10%, thereby obtaining a more competitive cost.

[0016] 3. Improved the structural stability of the cable:

[0017] The utility model adopts a PVC sheath, which can protect the cable from physical damage and chemical corrosion, and increase the stability and reliability of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Reference numerals:

[0021] 1- conductor, 2- insulation layer, 3- metal tape, 4- shielding layer, 5- sheath layer. DETAILED DESCRIPTION

[0022] like Figure 1 As shown, a novel coaxial cable structure for automobiles includes, from inside to outside, a wire core, a metal tape 3, a shielding layer 4, and a sheath layer 5.

[0023] The wire core is composed of a 7 / 0.26 bare copper conductor 1 and a foamed PP insulation layer 2, and has an outer diameter of 2.02 to 2.18 mm;

[0024] The metal tape 3 is a double-sided metal tape coated on the outside of the wire core;

[0025] The shielding layer 4 is a tinned copper-clad aluminum alloy braided on the surface of the metal tape 3, and 16 ingots of 5 single wires with a diameter of 0.101-0.200 mm are used to evenly adhere to the surface of the metal tape 3.

[0026] The sheath layer 5 is made of PVC material.

[0027] The utility model weaves a tinned copper clad aluminum alloy braid on the surface of the metal tape, and uses 16 spindles of 5 single-filament tinned copper clad aluminum alloy conductors with a diameter of 0.101 to 0.20 mm to evenly fit on the surface of the metal tape to minimize electromagnetic interference. PVC and other materials are used to cover the outer surface of the cable to protect the cable and improve the strength and stability of the cable. The PVC sheath has the characteristics of high wear resistance, aging resistance, high temperature resistance and chemical corrosion resistance, and can effectively protect the cable. A lower-cost automotive cable and a cable structure with the same performance EMC shielding effectiveness, as well as the protection of a PVC sheath, are obtained, while meeting the relevant provisions on wire materials in the USCAR17 standard, increasing the stability of the coaxial cable, and ensuring stable and reliable signal transmission.

[0028] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A new type of automotive coaxial cable structure, from inside to outside, includes: Wire core, metal tape, shielding layer, sheath layer, characterized by: The wire core is composed of a 7 / 0.26 bare copper conductor and a foamed PP insulation layer and has an outer diameter of 2.02 to 2.18 mm; The metal tape is a double-sided metal tape coated on the outside of the wire core; The shielding layer is woven on the surface of the metal tape with tinned copper clad aluminum alloy, and 16 ingots of 5 single wires with a diameter of 0.101-0.200 mm are used to evenly adhere to the surface of the metal tape.

2. A novel vehicle coaxial cable structure as claimed in claim 1, characterized in that :The sheath layer is made of PVC material.

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