Vehicle-mounted Ethernet cable with bandwidth of 25GHz

Abstract

The utility model relates to the technical field of network cables, in particular to a bandwidth 25GHz vehicle-mounted Ethernet cable, which is characterized in that an inner coating layer is extruded on the periphery of a core wire, a first shielding layer is wrapped on the periphery of the inner coating layer, and filling strips are arranged on two opposite sides of the periphery of the first shielding layer. The cable further comprises a second shielding layer and a sheath layer which are wrapped on the peripheries of the first shielding layer and the filling strips, and each core wire comprises a single silver-plated soft copper conductor, an insulating inner layer and an insulating outer layer, wherein the insulating inner layer and the insulating outer layer sequentially wrap the silver-plated soft copper conductor. The effects of impedance matching and signal attenuation reduction are achieved through the inner coating layer, the first shielding layer and the filling strip guarantee the shielding effect of the wire rod and protect the wire rod from generating gaps and deformation when the wire rod is bent, and the adopted single silver-plated soft copper conductor has better conductivity. And the silver coating on the surface of the conductor has the characteristic of high temperature resistance, so that the signal transmission is more stable, and the wire rod can ensure the authenticity and stability of signal transmission in a complex environment in a vehicle when the bandwidth is 25GHz.

Description

Technical Field

[0001] The present application relates to the field of network cable technology, and in particular to a 25 GHz bandwidth vehicle-mounted Ethernet cable. Background Art

[0002] In-vehicle Ethernet cables are used to transmit signals between devices in the car. With the increasing demand for intelligent vehicles, the complexity of vehicle architecture and functions is constantly increasing, and the equipment and wiring inside the car are also becoming more and more complex. The traditional twisted pair signal cable has poor bending resistance. In the complex environment inside the car, it cannot guarantee the authenticity and stability of the transmitted signal at a bandwidth of 25GHz, and it is difficult to meet the needs of increasing the data transmission bandwidth of existing vehicles and changing the communication mode. Utility Model Content

[0003] In order to solve the above technical problems, the present application provides a 25GHz in-vehicle Ethernet cable, comprising two core wires placed side by side, an inner sheath layer extruded on the outer periphery of the core wire, a first shielding layer wrapped around the outer periphery of the inner sheath layer, filling strips are arranged on the outer periphery of the first shielding layer along the opposite sides of the two core wires in the side-by-side direction, and also includes a second shielding layer and a sheath layer wrapped around the outer periphery of the first shielding layer and the filling strip, 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.

[0004] Preferably, the wire diameter of the silver-plated soft copper conductor is 0.40-0.45 mm, and the silver-plated soft copper conductor is obtained 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.

[0005] Preferably, the inner layer has a thickness of 0.15-0.18 mm.

[0006] Preferably, the insulating inner layer is a Teflon physical foaming layer, and the insulating outer layer is a Teflon solid layer.

[0007] Preferably, the first shielding layer comprises an aluminum layer and a polyester tape wrapped around the outer periphery of the inner sheath layer.

[0008] Preferably, the second shielding layer includes an aluminum foil layer and a braided layer.

[0009] Preferably, the braided layer is braided with tinned soft copper wires with a diameter of 0.1-0.15 mm, and the braiding density is greater than 85%.

[0010] As can be seen from the above, the following beneficial effects can be obtained by applying the present application: an inner sheath is formed by extruding an inner sheath around the core wire, a first shielding layer is wrapped around the inner sheath, a filling strip is arranged outside the first shielding layer, a second shielding layer and a sheath are wrapped around the first shielding layer and the filling strip, 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. By extruding an inner sheath 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, thereby achieving impedance matching and reducing signal attenuation. The first shielding layer ensures the shielding effect of the wire while protecting the wire from gaps and deformation when bent, thereby ensuring that the wire bandwidth attenuates before 25GHz and no resonance point occurs. The single silver-plated soft copper conductor used has better conductivity, lower impedance, and can provide smaller attenuation. The silver plating layer on the surface of the conductor is resistant to high temperatures, making the signal transmission more stable, so that the wire can ensure the authenticity and stability of the transmission signal at a bandwidth of 25GHz in the complex environment inside the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] 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.

[0012] Figure 1 This is a schematic diagram of a 25 GHz bandwidth in-vehicle Ethernet cable according to an embodiment of the present application. DETAILED DESCRIPTION

[0013] 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.

[0014] Example

[0015] In order to solve the above technical problems, this embodiment provides a 25GHz bandwidth vehicle Ethernet cable, such as Figure 1As shown, it includes two core wires 10 placed side by side, the two core wires 10 are placed in parallel, 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, and a filling strip 40 is arranged on the outer periphery of the first shielding layer 30 on opposite sides along the direction of the two core wires 10 side by side. It also includes a second shielding layer 50 and a sheath layer 60 wrapped around the first shielding layer 30 and the filling strip 40. The core wire 10 includes a single silver-plated soft copper conductor 11, an insulating inner layer 12 and an insulating outer layer 13 sequentially coated on the silver-plated soft copper conductor 11. By extruding a layer of inner sheath 20 outside the two core wires 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 achieving impedance matching and reducing signal attenuation. The first shielding layer 30 ensures the shielding effect of the wire while protecting the wire from gaps and deformation when bent, thereby ensuring that the wire bandwidth attenuates before 25 GHz and no resonance point occurs. The built-in filling strip 40 makes the wire round as a whole and can greatly improve the wire's resistance to bending. The single silver-plated soft copper conductor 11 has better conductivity, lower impedance, and can provide smaller attenuation. 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 25 GHz in the complex environment inside the car.

[0016] Specifically, the wire diameter of the silver-plated soft copper conductor 11 is 0.40-0.45mm, 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 1.2-1.4μm. Preferably, the wire diameter of the silver-plated soft copper conductor 11 is 0.41mm, and the thickness of the silver layer is 1.2μm. Among them, the insulating inner layer 12 is a Teflon physical foaming layer with a foaming degree of 35%, and the insulating outer layer 13 is a Teflon solid layer. The silver-plated soft copper conductor 11 is protected by a double-layer insulation structure. The Teflon insulation coating structure will not melt or be scratched when extruded at high temperature, thereby making the wire signal transmission more stable.

[0017] Furthermore, the two core wires 10 are placed in parallel, and the two core wires 10 are uniformly coated with modified polypropylene through an extruder, so that the two core wires 10 form an inner layer 20, wherein the thickness of the inner layer 20 is 0.15-0.18 mm, preferably 0.15 mm. The inner layer 20 makes the two core wires 10 more stable, and the modified polypropylene material selected for the inner layer 20 has a relative dielectric constant of 2.2 and a hardness of 50D, which effectively increases the distance between the silver-plated soft copper conductor 11 and the first shielding layer 30, and ensures the stability of the distance, thereby achieving impedance matching and reducing the effect of signal attenuation.

[0018] Furthermore, the first shielding layer 30 includes an aluminum layer 31 and a polyester tape 32 wrapped around the outer periphery of the inner quilt layer 20. One side of the aluminum layer 31 is an aluminum foil, and the other side is a plastic layer coated with hot melt adhesive. When wrapping longitudinally, the aluminum foil faces inward and the hot melt adhesive layer faces outward, and then two layers of self-adhesive polyester tape 32 are wrapped to ensure the structural stability of the shielding layer.

[0019] Furthermore, the filling strip 40 uses aramid yarn as a filling material, and is arranged on opposite sides of the outer periphery of the first shielding layer 30 along the direction in which the two core wires 10 are arranged side by side, so that the wire is as close to a circle as possible, and at the same time, the bending resistance of the wire is greatly improved, so that it has better anti-bending fatigue characteristics, thereby increasing the service life of the wire.

[0020] Furthermore, the second shielding layer 50 includes an aluminum foil layer 51 and a braided layer 52. The braided layer 52 is woven from tinned soft copper wire with a diameter of 0.1-0.15 mm, wherein the tinned soft copper wire is 0.1 mm tinned soft copper wire, and its braiding density is greater than 85%. The double-layer shielding design of the aluminum foil layer 51 and the braided layer 52 can greatly improve the shielding effectiveness of the wire, so that the wire is not affected by external interference signals during use, and can ensure the authenticity and stability of the transmission signal at a bandwidth of 25 GHz. The sheath layer 60 uses a modified thermoplastic elastomer material specially used for automotive wires, which can work for a long time in a temperature range of 40°C to 105°C, has excellent oil resistance, temperature resistance, flame retardancy and other properties, and can achieve perfect protection of the signal core wire.

[0021] In summary, the present application scheme forms an inner sheath by extruding an inner sheath around the core wire, a first shielding layer is wrapped around the inner sheath, a filling strip is arranged on the outside of the first shielding layer, a second shielding layer and a sheath layer are wrapped around the first shielding layer and the filling strip, and the core wire includes a single silver-plated soft copper conductor, an insulating inner layer and an insulating outer layer which are sequentially coated on the silver-plated soft copper conductor. By extruding an inner sheath 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, thereby achieving impedance matching and reducing the effect of signal attenuation. The first shielding layer ensures the shielding effect of the wire while protecting the wire from gaps and deformation when it is bent, thereby ensuring that the wire bandwidth will not resonate before 25GHz. The single silver-plated soft copper conductor used has better conductivity, lower impedance, and can provide smaller attenuation. The silver-plated layer on the surface of the conductor has the characteristics 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.

[0022] 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 25GHz bandwidth automotive Ethernet cable, characterized by: The invention 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 direction in which the two core wires (10) are arranged side by side, 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) which are sequentially coated on the silver-plated soft copper conductor (11).

2. The 25 GHz bandwidth vehicle Ethernet cable according to claim 1, characterized in that: The wire diameter of the silver-plated soft copper conductor (11) is 0.40-0.45 mm. The silver-plated soft copper conductor (11) is obtained 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 inner lining layer (20) has a thickness of 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 circumference of the inner jacket 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 braided with tinned soft copper wires with a diameter of 0.1-0.15 mm, and its braiding density is greater than 85%.

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