High-weather-resistance radio frequency cable
By using a multi-strand inner conductor and a specific material insulation sheath, the problem of short service life of coaxial radio frequency cables in harsh environments has been solved, thus improving the cable's weather resistance and service life.
Patent Information
- Application Number
- CN202422940492.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Existing coaxial RF cables have a short lifespan in harsh environments and are prone to oxidation and corrosion, resulting in high replacement costs.
The cable employs a multi-strand inner conductor structure, with insulation and sheathing layers made of specific materials, including an inner isolation layer, an outer isolation layer, and a sheath layer. It utilizes materials such as polytetrafluoroethylene, tin-plated copper-clad copper, cross-linked polyethylene, polyurethane, and acrylonitrile-butadiene-styrene copolymer to enhance the cable's weather resistance and protective performance.
It significantly improves the flexibility, signal stability, and mechanical strength of cables, extends their service life, adapts to harsh environments, and reduces replacement costs.
Smart Images
Figure CN223513668U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to cable technical field especially relates to a high weatherability radio frequency cable. BACKGROUND
[0002] Coaxial cable is a kind of wire and signal transmission line, generally is caused by four layers of material: the innermost is a conductive copper wire, the outside of wire has a layer of plastic (as insulator, dielectric) around, and the insulator has a layer of thin mesh conductive body (generally copper or alloy) outside, then the conductive body is the outermost insulating material as the outer skin. Coaxial cable can be used for analog signal and digital signal transmission, suitable for a variety of applications, of which the most important are cable television transmission, long distance telephone transmission, short distance connection between computer systems and local area network etc.
[0003] Weatherability refers to the fading, discoloration, cracking, powdering and strength reduction and a series of aging phenomena of plastic products due to the influence of external conditions such as sunlight, temperature change, wind and rain.
[0004] The coaxial radio frequency cable in the prior art is in contact with the external environment for a long time during use, especially when the cable is arranged in a position with a relatively harsh climate environment, the cable body is continuously eroded by the external environment, so that the service life of the cable body is continuously reduced, and after long-term use, the cable surface is prone to oxidation, corrosion and other phenomena, and even the outer skin is broken and cracked, so that the service life of the cable cannot be guaranteed. When the cable is damaged, the cable needs to be replaced, but the replacement cost is high, which greatly increases the budget cost of the user. In view of this, we propose a high weatherability radio frequency cable. SUMMARY
[0005] The utility model discloses a high weatherability radio frequency cable to solve the problem in the background art.
[0006] Therefore, the utility model provides a high weatherability radio frequency cable, which comprises:
[0007] A plurality of inner conductors are provided with an inner isolation layer on the outer side, the inner isolation layer is filled with a filling layer inside and on the outer side of the plurality of inner conductors, the outer side of the inner isolation layer is covered with an outer conductor, the outer side of the outer conductor is covered with a first sheath layer, the outer side of the first sheath layer is covered with an outer isolation layer, and the outer side of the outer isolation layer is covered with a second sheath layer.
[0008] In the above technical solution, further, the inner conductor is composed of a copper core and a first insulating layer wrapped outside the copper core, the copper core adopts oxygen-free fine copper material, the copper core is twisted by multiple copper strips, and the side wall of the copper core in the same inner conductor is provided with a color separation belt, and the colors of the color separation belts in the multiple inner conductors are different.
[0009] In the above technical solution, further, the material of the inner isolation layer is polytetrafluoroethylene material, the inner isolation layer tightly wraps the multiple inner conductors and the filling layer, and the thickness of the inner isolation layer is 2-4 mm.
[0010] In the above technical solution, further, the material of the outer conductor is tinned copper clad copper material, the outer conductor is formed by weaving double-layered tinned copper clad copper wires, and the thickness of the outer conductor is 1-1.5 mm.
[0011] In the above technical solution, further, the material of the first sheath layer is cross-linked polyethylene material, and the thickness of the first sheath layer is 0.8-1 mm.
[0012] In the above technical solution, further, the material of the outer isolation layer is polyurethane material, and the thickness of the outer isolation layer is 1-1.3 mm.
[0013] In the above technical solution, further, the material of the second sheath layer is acrylonitrile-butadiene-styrene copolymer material, and the thickness of the second sheath layer is 2-3 mm.
[0014] The high-weather-resistance radio frequency cable has the advantages that:
[0015] 1. The high-weather-resistance radio frequency cable is provided with multiple inner conductors, and the inner conductors are twisted to form an inner conductor, compared with the traditional radio frequency cable in which an inner conductor is formed by a single wire, the inner conductor formed by the multiple inner conductors has obvious advantages in flexibility, phase stability, reduction of signal interference, adaptation to high-frequency signal transmission, mechanical strength and durability, etc.
[0016] The high-weather-resistance radio frequency cable is provided with an outer isolation layer and a second sheath layer, the material of the outer isolation layer is polyurethane material, the material of the second sheath layer is acrylonitrile-butadiene-styrene copolymer material, the polyurethane material has better stability, chemical resistance, resilience and mechanical properties than the PVC foaming material, has smaller compression deformation, the acrylonitrile-butadiene-styrene copolymer has good weather resistance, wide adaptation range and excellent wear resistance and oxidation resistance, can provide excellent protection for the cable, and greatly prolongs the service life of the cable; compared with the traditional radio frequency cable, the cable can be applied to various harsh external environments, and the shortcoming that the traditional radio frequency cable is not applicable to harsh environments is improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is one of the schematic diagrams of the overall structure of the utility model.
[0018] Figure 2 It is the second schematic diagram of the overall structure in the utility model (under the state of top view).
[0019] Figure 3 It is the overall structure section of the utility model.
[0020] The marks in the figure represent:
[0021] 1, inner conductor; 2, filling layer; 3, inner isolation layer; 4, outer conductor; 5, first sheath layer; 6, outer isolation layer; 7, second sheath layer. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.
[0023] Embodiment 1:
[0024] Please refer to Figure 1 - Figure 2 As shown in the figure, the embodiment provides a high-weather-resistant radio frequency cable, which comprises:
[0025] A plurality of inner conductors 1, the outer side of the plurality of inner conductors 1 is provided with an inner isolation layer 3, the inner isolation layer 3 is filled with a filling layer 2 inside and at the outer side of the plurality of inner conductors 1, the outer side of the inner isolation layer 3 is covered with an outer conductor 4, the outer side of the outer conductor 4 is covered with a first sheath layer 5, the outer side of the first sheath layer 5 is covered with an outer isolation layer 6, and the outer side of the outer isolation layer 6 is covered with a second sheath layer 7.
[0026] Among them, the plurality of inner conductors 1 is in a twisted state at the center of the cable, thereby forming an internal conductor part in the radio frequency cable, by setting the plurality of inner conductors 1 and making the inner conductor 1 twisted to form an internal conductor, compared with the traditional radio frequency cable which only forms an internal conductor by a single wire, the internal conductor formed by the plurality of inner conductors 1 in the present application has significant advantages in flexibility, phase stability, reducing signal interference, adapting to high-frequency signal transmission, mechanical strength and durability, etc.
[0027] In addition, by arranging the outer isolation layer 6 and the second sheath layer 7, the outer isolation layer 6 has good waterproof and heat insulation performance, has superior fireproof performance, and can play an excellent protection role on the inner layers, the second sheath layer 7 has good wear resistance, weather resistance and oxidation resistance, and can prolong the service life of the cable body.
[0028] Embodiment 2:
[0029] The embodiment provides a high-weather-resistance radio frequency cable, in addition to comprising the technical scheme of the above embodiment, further has the following technical features, the inner conductor 1 is composed of a copper core and a first insulation layer wrapped outside the copper core, the copper core adopts oxygen-free fine copper material, the copper core is twisted by a plurality of copper strips, the side wall of the copper core in the same inner conductor 1 is provided with a color separation belt, and the colors of the color separation belts in the plurality of inner conductors 1 are different.
[0030] Among them, the inner conductor 1 twisted by a plurality of oxygen-free copper wires has strong flexibility, can meet that the cable is suitable for places with high cable flexibility, and improves the application range of the cable.
[0031] Embodiment 3:
[0032] The embodiment provides a high-weather-resistance radio frequency cable, in addition to comprising the technical scheme of the above embodiment, further has the following technical features, the material of the inner isolation layer 3 is polytetrafluoroethylene material, the inner isolation layer 3 tightly wraps the plurality of inner conductors 1 and the filling layer 2, and the thickness of the inner isolation layer 3 is 2-4 mm.
[0033] Among them, polytetrafluoroethylene has high heat resistance and low temperature resistance, can still maintain good flexibility and strength even in a higher or lower environment, in addition, polytetrafluoroethylene has very low dielectric loss, is very suitable for insulation protection in the high-frequency signal transmission process, polytetrafluoroethylene also has excellent chemical inertness, has good resistance to many chemical substances, polytetrafluoroethylene as a medium between the inner conductor 1 and the outer conductor 4 has more stable structural performance and insulation performance, and can effectively reduce the mutual interference between the outer conductor 4 and the inner conductor twisted by the plurality of inner conductors 1.
[0034] Embodiment 4:
[0035] The embodiment provides a high-weather-resistance radio frequency cable, in addition to comprising the technical scheme of the above embodiment, further has the following technical features, the outer conductor 4 is a double-layer complex tin-plated copper wrapped copper wire braid, and the thickness of the outer conductor 4 is 1-1.5 mm.
[0036] The inner conductor 1 is formed by weaving double-layer complex tin-plated copper copper wires, so that the inner conductor 1 has higher strength, and a layer of synthetic mica layer is filled between the inner isolation layer 3 and the outer conductor 4, and the radio frequency signal in the inner conductor is blocked through cooperation with the outer conductor 4, so as to prevent the radio frequency signal from leaking and being affected by external bad factors.
[0037] Embodiment 5:
[0038] The embodiment provides a high-weather-resistance radio frequency cable, in addition to the technical scheme of the above-mentioned embodiment, further has the following technical features, the material of the first sheath layer 5 is cross-linked polyethylene material, the thickness of the first sheath layer 5 is 0.8-1mm.
[0039] The first sheath layer 5 can protect the cable core part from being eroded by external substances, thereby prolonging the service life of the cable, in addition, the first sheath layer 5 also has a buffering effect and a static electricity elimination effect, can absorb the mechanical stress and vibration generated in the operation of the cable, reduce the damage to the cable core part, and ensure the safe operation of the cable, and the cross-linked polyethylene material can isolate the electric field of the cable core part, so that the electric breakdown in the cable is avoided.
[0040] Embodiment 6:
[0041] The embodiment provides a high-weather-resistance radio frequency cable, in addition to the technical scheme of the above-mentioned embodiment, further has the following technical features, the material of the first sheath layer 5 is cross-linked polyethylene material, the thickness of the first sheath layer 5 is 0.8-1mm.
[0042] The polyurethane material has better stability, chemical resistance, resilience and mechanical properties than the PVC foaming material, and has smaller compression deformation.
[0043] Embodiment 7:
[0044] The embodiment provides a high-weather-resistance radio frequency cable, in addition to the technical scheme of the above-mentioned embodiment, further has the following technical features, the material of the first sheath layer 5 is cross-linked polyethylene material, the thickness of the first sheath layer 5 is 0.8-1mm.
[0045] The acrylonitrile-butadiene-styrene copolymer has good weather resistance, wide application range, excellent wear resistance and oxidation resistance, can play an excellent protection effect on the cable in the application, greatly enhances the service life of the cable, and in addition, compared with the traditional radio frequency cable, the cable can be applied to various harsh external environments, and the disadvantage that the traditional radio frequency cable is not applicable to harsh environments is improved.
[0046] The embodiments of the present application are described above with reference to the drawings, and the embodiments and features in the embodiments of the present application can be combined with each other without conflict, and the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are only illustrative but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection of the present application.
Claims
1. A high weather-resistant radio frequency cable, characterized in that, include: A multi-strand inner conductor (1) is provided with an inner isolation layer (3) on the outside of the multi-strand inner conductor (1). A filling layer (2) is filled inside the inner isolation layer (3) and located on the outside of the multi-strand inner conductor (1). An outer conductor (4) is covered on the outside of the inner isolation layer (3). A first sheath layer (5) is covered on the outside of the outer conductor (4). An outer isolation layer (6) is covered on the outside of the first sheath layer (5). A second sheath layer (7) is covered on the outside of the outer isolation layer (6).
2. The high weather-resistant radio frequency cable according to claim 1, characterized in that, The inner conductor (1) consists of a copper core and a first insulating layer wrapped around the outside of the copper core. The copper core is made of oxygen-free refined copper and is made of multiple strands of copper strips twisted together. Color-separating strips are provided on the sidewalls of the copper core in the same inner conductor (1), and the color-separating strips in the multiple strands of the inner conductor (1) are different colors.
3. The high weather-resistant radio frequency cable according to claim 1, characterized in that, The inner isolation layer (3) is made of polytetrafluoroethylene. The inner isolation layer (3) tightly wraps the multiple inner conductors (1) and the filling layer (2). The thickness of the inner isolation layer (3) is 2-4 mm.
4. The high weather-resistant radio frequency cable according to claim 1, characterized in that, The outer conductor (4) is made of tin-plated copper-clad copper material. The outer conductor (4) is formed by double-layer double-layer tin-plated copper-clad copper wire braiding. The thickness of the outer conductor (4) is 1-1.5mm.
5. A high weather-resistant radio frequency cable according to claim 1, characterized in that, The first sheath layer (5) is made of cross-linked polyethylene and has a thickness of 0.8-1mm.
6. A high weather-resistant radio frequency cable according to claim 1, characterized in that, The outer isolation layer (6) is made of polyurethane and has a thickness of 1-1.3 mm.
7. The high weather-resistant radio frequency cable according to claim 1, characterized in that, The second sheath layer (7) is made of acrylonitrile-butadiene-styrene copolymer and has a thickness of 2-3 mm.