CN222580801U - A 25GHz bandwidth automotive Ethernet cable - Google Patents

Abstract

The present application relates to the field of network cable technology, and in particular to a 25GHz bandwidth vehicle Ethernet cable, which is formed by extruding an inner sheath layer on the outer periphery of the core wire, a first shielding layer is wrapped around the outer periphery of the inner sheath layer, and filling strips are arranged on opposite sides of the outer periphery of the first shielding layer, and also includes a second shielding layer and a sheath layer wrapped around the outer periphery of the first shielding layer and the filling strips, and the core wire includes a single silver-plated soft copper conductor, an insulating inner layer and an insulating outer layer sequentially coated on the silver-plated soft copper conductor. The inner sheath layer is used to achieve impedance matching and reduce signal attenuation. The first shielding layer and the filling strips ensure the shielding effect of the wire while protecting the wire from gaps and deformation when it is bent. The single silver-plated soft copper conductor used has better conductivity, and the silver-plated layer on the surface of the conductor has the characteristic of high temperature resistance, which makes the signal transmission more stable, so that the wire can ensure the authenticity and stability of the transmission signal when the bandwidth is 25GHz in the complex environment inside the car.

Description

Bandwidth 25GHz vehicle-mounted Ethernet cable

Technical Field

The application relates to the technical field of network cables, in particular to a vehicle-mounted Ethernet cable with a bandwidth of 25 GHz.

Background

The vehicle-mounted Ethernet cable is used for signal transmission between devices in an automobile, along with the improvement of the intelligent requirements of the automobile, the complexity of the architecture and functions of the automobile is continuously improved, and the devices and wiring in the automobile are also more and more complicated. The whole wire of the traditional twisted pair signal wire has poor bending resistance, can not ensure the reality and stability of a transmission signal under the complex environment in a vehicle at the bandwidth of 25GHz, and is difficult to meet the requirements on the improvement of the data transmission bandwidth and the change of the communication mode of the existing vehicle.

Disclosure of utility model

In order to solve the technical problems, the application provides a bandwidth 25GHz vehicle-mounted Ethernet cable, which comprises two core wires which are arranged side by side, wherein an inner coating layer is extruded on the periphery of the core wires, a first shielding layer is wrapped around the periphery of the inner coating layer, filling strips are arranged on the periphery of the first shielding layer along two opposite sides of the side by side directions of the core wires, the bandwidth 25GHz vehicle-mounted Ethernet cable further comprises a second shielding layer and a sheath layer which are wrapped around the peripheries of the first shielding layer and the filling strips, and the core wires comprise a single silver-plated soft copper conductor, and an insulating inner layer and an insulating outer layer which are sequentially wrapped on the silver-plated soft copper conductor.

Preferably, the wire diameter of the silver-plated soft copper conductor is 0.40-0.45mm, and the silver-plated soft copper conductor is uniformly plated with a silver layer on the surface of a copper wire, wherein the thickness of the silver layer is 1.2-1.4 mu m.

Preferably, the thickness of the inner coating layer is 0.15-0.18mm.

Preferably, the insulating inner layer is a teflon physical foaming layer, and the insulating outer layer is a teflon solid layer.

Preferably, the first shielding layer comprises an aluminum layer and a polyester tape wrapped around the outer periphery of the inner quilt layer.

Preferably, the second shielding layer includes an aluminum foil layer and a braid layer.

Preferably, the braiding layer is formed by braiding tinned soft copper wires with the diameter of 0.1-0.15mm, and the braiding density is more than 85%.

The application has the beneficial effects that the inner coating layer is formed by extruding the outer periphery of the core wire, the first shielding layer is wrapped around the outer periphery of the inner coating layer, the filling strips are arranged outside the first shielding layer, the second shielding layer and the sheath layer are wrapped around the outer periphery of the first shielding layer and the filling strips, and the core wire comprises a single silver-plated soft copper conductor, and an insulating inner layer and an insulating outer layer which are sequentially coated on the silver-plated soft copper conductor. Through extruding an inner coating layer outside the two core wires, the distance between the silver-plated soft copper conductor and the first shielding layer is effectively increased, and the stability of the distance is ensured, so that the effects of impedance matching and reducing signal attenuation are realized. The shielding effect of the wire rod is guaranteed through the first shielding layer, the wire rod is protected from gaps and deformation under the bending condition, so that the bandwidth of the wire rod is guaranteed to be attenuated before 25GHz, resonance points are avoided, a single silver-plated soft copper conductor is better in conductivity and smaller in impedance, smaller attenuation can be provided, and the silver-plated layer on the surface of the conductor is high-temperature resistant, so that signal transmission is more stable, and the wire rod can guarantee reality and stability of a transmission signal in the bandwidth of 25GHz under a complex environment in a vehicle.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present application or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from them without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic diagram of a bandwidth 25GHz vehicle-mounted ethernet cable according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Examples

In order to solve the above-mentioned technical problem, this embodiment provides a bandwidth 25GHz vehicle-mounted ethernet cable, as shown in fig. 1, including two core wires 10 placed side by side, two core wires 10 are placed in parallel, an inner coating 20 is formed by extruding at the periphery of the core wires 10, a first shielding layer 30 is wrapped around the periphery of the inner coating 20, filling strips 40 are provided at opposite sides of the periphery of the first shielding layer 30 along the side by side direction of the two core wires 10, and further including a second shielding layer 50 and a sheath layer 60 wrapped around the peripheries of the first shielding layer 30 and the filling strips 40, wherein the core wires 10 include a single silver-plated soft copper conductor 11, an insulating inner layer 12 and an insulating outer layer 13 which are sequentially wrapped around the silver-plated soft copper conductor 11. By extruding an inner coating 20 outside the two cores 10, the distance between the silver-plated soft copper conductor 11 and the first shielding layer 30 is effectively increased, and the stability of the distance is ensured, thereby realizing the effects of impedance matching and reducing signal attenuation. The first shielding layer 30 ensures that the wire is prevented from being in gaps and deformation under the bending condition, so that the bandwidth of the wire is ensured to be attenuated before 25GHz, resonance points are not generated, the built-in filling strip 40 enables the whole round wire to be and the bending resistance of the wire to be greatly improved, the adopted single silver-plated soft copper conductor 11 is better in conductivity and smaller in impedance, smaller attenuation can be provided, and the silver-plated layer on the surface of the conductor is higher in high temperature resistance, so that signal transmission is more stable, and the wire can ensure reality and stability of a transmission signal under the complex environment in a vehicle when the bandwidth is 25 GHz.

Specifically, the wire diameter of the silver-plated soft copper conductor 11 is 0.40-0.45mm, and the silver layer is uniformly plated on the surface of the copper wire by the silver-plated soft copper conductor 11, and the thickness of the silver layer is 1.2-1.4 mu m. Preferably, the silver-plated soft copper conductor 11 has a wire diameter of 0.41mm and a silver layer thickness of 1.2 μm. Wherein, insulating inlayer 12 is indisputable fluorine dragon physical foam layer, and the foaming degree is 35%, and insulating skin 13 is indisputable fluorine dragon solid layer, protects silver-plated soft copper conductor 11 through bilayer insulation structure, and the cladding material structure can not appear melting, the condition such as scratch when the high temperature is extruded in indisputable fluorine dragon insulation to make wire rod signal transmission more stable.

Further, the two core wires 10 are placed in parallel, and the two core wires 10 are uniformly coated by using the modified polypropylene through an extruder, so that the two core wires 10 form the inner coating layer 20, wherein the thickness of the inner coating layer 20 is 0.15-0.18mm, preferably 0.15mm. The two core wires 10 are more stable through the inner coating 20, the relative dielectric constant of the modified polypropylene material selected by the inner coating 20 is 2.2, the hardness is 50D, the distance between the silver-plated soft copper conductor 11 and the first shielding layer 30 is effectively increased, the stability of the distance is ensured, and therefore the effects of impedance matching and reducing signal attenuation are achieved.

Further, the first shielding layer 30 includes an aluminum layer 31 and a polyester tape 32 wrapped around the outer circumference of the inner coating layer 20. One side of the aluminum layer 31 is aluminum foil, and the other side is a plastic layer coated with hot melt adhesive. The aluminum foil is inwards when longitudinally wrapped, the hot melt adhesive layer is outwards, and then two layers of self-adhesive polyester tapes 32 are wrapped, so that the structural stability of the shielding layer is ensured.

Further, the filler strips 40 are made of aramid fiber, and the filler strips 40 are arranged on two opposite sides of the periphery of the first shielding layer 30 along the side-by-side direction of the two core wires 10, so that the wire is as close to a round shape as possible, and meanwhile, the bending resistance of the wire can be greatly improved, the wire has better bending fatigue resistance, and the service life of the wire is prolonged.

Further, the second shielding layer 50 includes an aluminum foil layer 51 and a braid 52. The braid 52 is braided by tin-plated soft copper wires with the diameter of 0.1-0.15mm, wherein the tin-plated soft copper wires are 0.1mm tin-plated soft copper wires, and the braiding density is more than 85%. The shielding effectiveness of the wire can be greatly improved through the double-layer shielding design of the aluminum foil layer 51 and the weaving layer 52, so that the wire is not influenced by external interference signals when in use, and the reality and stability of transmission signals can be ensured at the bandwidth of 25 GHz. The sheath layer 60 is made of a modified thermoplastic elastomer material special for the automobile wire, can work for a long time within the temperature range of 40-105 ℃, has excellent oil resistance, temperature resistance, flame retardance and the like, and can realize perfect protection of the signal core wire.

In summary, according to the scheme of the application, the inner coating layer is formed on the outer periphery of the core wire by extrusion, the first shielding layer is wrapped on the outer periphery of the inner coating layer, the filling strips are arranged on the outer side of the first shielding layer, the second shielding layer and the sheath layer are wrapped on the outer periphery of the first shielding layer and the filling strips, and the core wire comprises a single silver-plated soft copper conductor, and an insulating inner layer and an insulating outer layer which are sequentially wrapped on the silver-plated soft copper conductor. Through extruding an inner coating layer outside the two core wires, the distance between the silver-plated soft copper conductor and the first shielding layer is effectively increased, and the stability of the distance is ensured, so that the effects of impedance matching and reducing signal attenuation are realized. The shielding effect of the wire rod is guaranteed through the first shielding layer, the wire rod is protected from gaps and deformation under the bending condition, so that the bandwidth of the wire rod is guaranteed to be attenuated before 25GHz, resonance points are avoided, a single silver-plated soft copper conductor is better in conductivity and smaller in impedance, smaller attenuation can be provided, and the silver-plated layer on the surface of the conductor is high-temperature resistant, so that signal transmission is more stable, and the wire rod can guarantee reality and stability of a transmission signal in the bandwidth of 25GHz under a complex environment in a vehicle.

The above-described embodiments do not limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the above embodiments should be included in the scope of the present invention.

Claims (7)

1. A 25 GHz bandwidth vehicle Ethernet cable, characterized in that it comprises two core wires (10) placed side by side, an inner sheath (20) is extruded on the outer periphery of the core wire (10), a first shielding layer (30) is wrapped around the outer periphery of the inner sheath (20), a filling strip (40) is arranged on the outer periphery of the first shielding layer (30) along the opposite sides of the parallel direction of the two core wires (10), and also comprises a second shielding layer (50) and a sheath layer (60) wrapped around the outer periphery of the first shielding layer (30) and the filling strip (40), wherein the core wire (10) comprises a single silver-plated soft copper conductor (11), an insulating inner layer (12) and an insulating outer layer (13) sequentially wrapped around the silver-plated soft copper conductor (11). 2. The 25 GHz bandwidth vehicle Ethernet cable according to claim 1 is characterized in that: the wire diameter of the silver-plated soft copper conductor (11) is 0.40-0.45 mm, and the silver-plated soft copper conductor (11) is formed by uniformly electroplating a silver layer on the surface of the copper wire, and the thickness of the silver layer is 1.2-1.4 μm. 3. The 25 GHz bandwidth vehicle Ethernet cable according to claim 1, characterized in that the thickness of the inner layer (20) is 0.15-0.18 mm. 4. The 25 GHz bandwidth vehicle Ethernet cable according to claim 1, characterized in that the insulating inner layer (12) is a Teflon physical foaming layer, and the insulating outer layer (13) is a Teflon solid layer. 5. The 25 GHz bandwidth vehicle Ethernet cable according to claim 1, characterized in that the first shielding layer (30) comprises an aluminum layer (31) and a polyester tape (32) wrapped around the outer periphery of the inner layer (20). 6. The 25 GHz bandwidth vehicle Ethernet cable according to claim 1, characterized in that the second shielding layer (50) comprises an aluminum foil layer (51) and a braided layer (52). 7. The 25 GHz bandwidth vehicle Ethernet cable according to claim 6, characterized in that the braided layer (52) is woven from tinned soft copper wires with a diameter of 0.1-0.15 mm, and the braiding density is greater than 85%.