High-shielding coaxial cable for vehicle

Abstract

The utility model discloses a high-shielding coaxial cable for a vehicle, which comprises an inner conductor, an insulating layer arranged on the outer side of the inner conductor, a high-temperature-resistant layer arranged on the outer side of the insulating layer, an inner shielding layer arranged on the outer side of the high-temperature-resistant layer, an alloy plating layer arranged on the outer side of the inner shielding layer, and the thickness of the alloy plating layer is 100-500 microns. The alloy coating is a metal tin and metal zinc alloy layer, an outer shielding layer is arranged on the outer side of the alloy coating, a waterproof layer is arranged on the outer side of the outer shielding layer, and a protective layer is arranged on the outer side of the waterproof layer. The coaxial cable is simple in structure and good in waterproof and high-temperature-resistant performance, the metal wire braid layer is wrapped in all directions through tinning, the shielding effect of the coaxial cable is effectively improved, and the phenomenon of high-frequency signal loss is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coaxial cables, in particular to a high-shielding coaxial cable for vehicles. Background Art

[0002] The coaxial cable for automotive use has excellent electrical, mechanical and environmental properties, namely good shielding, small standing wave, low attenuation, wide temperature, high frequency, high reliability, good bending flexibility, etc. The shielding of automotive coaxial cable can be distinguished from the appearance. There are two main types, one is the metal wire braiding form, and the other is the metal wire braiding plus the internal longitudinal metal composite film. The former has a simple process, and its main material is metal wire, which is highly flexible and has strong adaptability to bending and forming. Its mesh structure characteristics enable lower frequency signals to be better shielded and protected. Its disadvantage is that this gap structure has a large loss on high-frequency signals, the attenuation effect of the cable is obvious, and the shielding effect is obviously insufficient. The latter has improved shielding performance and transmission effect, but this cannot fundamentally improve the fact that the mesh gap causes loss of high-frequency signals. In addition, due to the existence of gaps in the braided layer, it also leads to poor sealing of moisture. For this reason, we propose a high-shielded automotive coaxial cable. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a high-shielding automotive coaxial cable. The utility model solves the problem that the metal wire braiding form has a large loss on high-frequency signals, the cable has a significant attenuation effect, the shielding effect is obviously insufficient, the metal wire braiding plus the internal longitudinal metal composite film cannot fundamentally improve the mesh gap and the loss of high-frequency signals. In addition, due to the gaps in the braided layer, it also leads to poor sealing of moisture.

[0004] A high-shielded vehicle coaxial cable in the utility model comprises an inner conductor, an insulating layer is arranged on the outer side of the inner conductor, a high-temperature resistant layer is arranged on the outer side of the insulating layer, an inner shielding layer is arranged on the outer side of the high-temperature resistant layer, an alloy plating layer is arranged on the outer side of the inner shielding layer, the thickness of the alloy plating layer is 100μm~500um, the alloy plating layer is a metal tin and metal zinc alloy layer, an outer shielding layer is arranged on the outer side of the alloy plating layer, a waterproof layer is arranged on the outer side of the outer shielding layer, and a protective layer is arranged on the outer side of the waterproof layer.

[0005] In the above solution, the insulating layer and the protective layer are both silicone rubber layers, and the thinnest point of the insulating layer is not less than 80% of the nominal insulation thickness.

[0006] In the above solution, the inner shielding layer is a metal wire braided layer.

[0007] In the above solution, the outer shielding layer is an aluminum foil layer.

[0008] In the above solution, a metal reinforcing wire is provided on the side of the protective layer close to the waterproof layer.

[0009] In the above solution, the waterproof layer is an acrylic material layer.

[0010] The advantages and beneficial effects of the utility model are as follows: the utility model provides a high-shielded automotive coaxial cable, the alloy plating layer uses metal tin as the main material, and the tinning work is completed by passing the inner conductor wrapped with the inner shielding layer through the tin liquid. The alloy plating layer can fill the gap inside the inner shielding layer, and the alloy plating layer wraps the inner shielding layer in all directions, so that there is no gap inside the inner shielding layer, thereby effectively ensuring the shielding performance of the coaxial cable. This kind of coaxial cable has a simple structure, good waterproof and high temperature resistance, and the metal wire braided layer is wrapped in all directions by tin plating, which effectively improves the shielding effect of the coaxial cable and avoids the phenomenon of high-frequency signal loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a cross-sectional view of the utility model.

[0014] In the figure: 1. Inner conductor 2. Insulation layer 3. High temperature resistant layer 4. Inner shielding layer

[0015] 5. Alloy plating 6. Outer shielding layer 7. Waterproof layer 8. Protective layer

[0016] 9. Metal reinforcement wire. DETAILED DESCRIPTION

[0017] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0018] like Figure 1-2As shown, the utility model is a high-shielded automotive coaxial cable, comprising an inner conductor 1, an insulating layer 2 is provided on the outer side of the inner conductor 1, the setting of the insulating layer 2 effectively guarantees the overall insulation performance of the coaxial cable, a high-temperature resistant layer 3 is provided on the outer side of the insulating layer 2, the setting of the high-temperature resistant layer 3 effectively increases the high-temperature resistance of the coaxial cable, an inner shielding layer 4 is provided on the outer side of the high-temperature resistant layer 3, an alloy plating layer 5 is provided on the outer side of the inner shielding layer 4, the thickness of the alloy plating layer 5 is 100μm~500um, the alloy plating layer 5 is a metal tin and metal zinc alloy layer, the alloy plating layer 5 uses metal tin as the main material, and the tinning work is completed by passing the inner conductor 1 wrapped with the inner shielding layer 4 through the inside of the tin liquid, the alloy plating layer 5 can fill the gap inside the inner shielding layer 4, so that there is no gap inside the inner shielding layer 4, thereby effectively ensuring the shielding performance of the coaxial cable, an outer shielding layer 6 is provided on the outer side of the alloy plating layer 5, a waterproof layer 7 is provided on the outer side of the outer shielding layer 6, the waterproof layer 7 effectively increases the waterproof performance of the coaxial cable, and a protective layer 8 is provided on the outer side of the waterproof layer 7.

[0019] The insulating layer 2 and the protective layer 8 are both silicone rubber layers, and the thinnest point of the insulating layer 2 is not less than 80% of the nominal insulation thickness.

[0020] The inner shielding layer 4 is a metal wire braided layer.

[0021] The outer shielding layer 6 is an aluminum foil layer, and the provision of the aluminum foil layer further improves the shielding performance of the coaxial cable.

[0022] The protective layer 8 is provided with a metal reinforcing wire 9 on one side close to the waterproof layer 7 , and the metal reinforcing wire 9 effectively increases the overall structural strength of the coaxial cable.

[0023] The alloy coating 5 contains 80% to 90% metal tin, 10% to 20% metal zinc, and 1% other metals.

[0024] The waterproof layer 7 is an acrylic material layer.

[0025] Specifically, in the present invention, the alloy plating 5 uses metallic tin as the main material, the metallic tin content is 80% to 90%, the metallic zinc content is 10% to 20%, and the other metals are 1%. The tin plating work is completed by passing the inner conductor 1 wrapped with the inner shielding layer 4 through the tin liquid. The alloy plating 5 can fill the gaps inside the inner shielding layer 4. The alloy plating 5 wraps the inner shielding layer 4 in all directions, so that there is no gap inside the inner shielding layer 4, thereby effectively ensuring the shielding performance of the coaxial cable.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A highly shielded automotive coaxial cable, comprising an inner conductor (1), characterized in that: An insulating layer (2) is provided on the outer side of the inner conductor (1), a high temperature resistant layer (3) is provided on the outer side of the insulating layer (2), an inner shielding layer (4) is provided on the outer side of the high temperature resistant layer (3), an alloy plating layer (5) is provided on the outer side of the inner shielding layer (4), the alloy plating layer (5) has a thickness of 100 μm to 500 μm, and the alloy plating layer (5) is a metal tin and metal zinc alloy layer, an outer shielding layer (6) is provided on the outer side of the alloy plating layer (5), a waterproof layer (7) is provided on the outer side of the outer shielding layer (6), and a protective layer (8) is provided on the outer side of the waterproof layer (7).

2. A highly shielded vehicle coaxial cable according to claim 1, characterized in that: The insulating layer (2) and the protective layer (8) are both silicone rubber layers, and the thinnest point of the insulating layer (2) is not less than 80% of the nominal insulation thickness.

3. A highly shielded vehicle coaxial cable according to claim 1, characterized in that: The inner shielding layer (4) is a metal wire braided layer.

4. The high-shield vehicle coaxial cable according to claim 1, characterized in that: The outer shielding layer (6) is an aluminum foil layer.

5. The high-shield vehicle coaxial cable according to claim 1, characterized in that: The protective layer (8) is provided with a metal reinforcing wire (9) on one side close to the waterproof layer (7).

6. The high-shield vehicle coaxial cable according to claim 1, characterized in that: The waterproof layer (7) is an acrylic material layer.

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