Radio frequency coaxial cable

Abstract

The invention provides a radio frequency coaxial cable which comprises a central torsion-resistant frame, an inner conductor, an insulating layer, a shielding layer and a plurality of protective layers. The inner conductor is assembled on the central torsion-resistant frame, the insulating layer wraps the outer side of the inner conductor, and the shielding layer wraps the outer side of the insulating layer. The multiple protective layers comprise at least two protective layers made of different materials, the innermost layer is an elastic layer, and the outermost layer is a wear-resistant layer. Compared with the prior art, the cable has the following beneficial technical effects: through the design of the central torsion-resistant frame and the multiple protection layers, external torsion force is effectively resisted, the internal structure of the cable is protected from being damaged, the wear resistance, weather resistance and other performance of the cable are greatly improved, and the cable can stably work in various environments.

Description

Technical Field

[0001] The invention belongs to the technical field of coaxial cables, and in particular relates to a radio frequency coaxial cable. Background Art

[0002] With the rapid development of information technology, the field of communication has undergone tremendous changes. Among them, coaxial cable, as a key transmission medium, has become increasingly prominent in data transmission and signal transmission. With its excellent transmission performance and wide range of applications, coaxial cables have become an indispensable part of modern communication systems. They are widely used in radio and television, mobile communications, satellite communications, military communications, local area networks and other fields, providing a solid foundation for high-speed and large-capacity data transmission.

[0003] However, despite the important role coaxial cables play in the field of communications, they face a series of challenges in actual installation and use. Traditional coaxial cables lack effective structural design to resist external physical influences, and often suffer from adverse factors such as twisting, bending and wear, resulting in performance degradation and shortened life. These problems not only affect the transmission quality of signals, but also increase maintenance costs and system instability. Summary of the invention

[0004] In order to solve the above technical problems, the present invention is solved by the following technical solutions.

[0005] A radio frequency coaxial cable comprises a central torsion frame, an inner conductor, an insulating layer, a shielding layer and a multi-layer protective layer. The inner conductor is mounted on the central torsion frame, the insulating layer is wrapped around the outer side of the inner conductor, and the shielding layer is wrapped around the outer side of the insulating layer. The multi-layer protective layer comprises at least two protective layers of different materials, the innermost layer is an elastic layer, and the outermost layer is a wear-resistant layer.

[0006] As a preferred technical solution for a radio frequency coaxial cable, specifically, the central anti-torsion frame is made of flexible plastic. The central anti-torsion frame includes a frame core, and a plurality of anti-torsion parts are arranged on the frame core, and assembly grooves for assembling inner conductors are formed between the anti-torsion parts. The anti-torsion parts include a plurality of equidistantly distributed anti-torsion blocks, and anti-torsion grooves are formed between the anti-torsion blocks. When the cable is twisted, the anti-torsion part is deformed, the anti-torsion groove is closed, and the anti-torsion blocks are squeezed together to prevent the cable from being further twisted and damaged.

[0007] As a preferred technical solution for a radio frequency coaxial cable, specifically, the ratio of the width of the anti-torsion groove at the notch to the width at the groove bottom is less than 2 / 1. This design can improve the cable's anti-torsion and bending performance while ensuring that the cable can be flexibly bent within a certain degree.

[0008] As a preferred technical solution for a radio frequency coaxial cable, specifically, an anti-torsion cushion layer is provided between the inner conductor and the assembly groove. The cushion layer is made of elastic material and can provide buffering when the cable is subjected to twisting force, thereby reducing direct pressure on the inner conductor.

[0009] As a preferred technical solution for radio frequency coaxial cable, specifically, a plurality of axially arranged heat dissipation protrusions are arranged on the outer surface of the elastic layer, a heat dissipation cavity hole is arranged in the heat dissipation protrusion, and the heat dissipation cavity hole is filled with a heat conductive medium. The thickness of other protective layers located outside the elastic layer at the heat dissipation cavity hole corresponding to the heat dissipation cavity hole is less than the thickness at other positions. This technical solution helps the cable to dissipate heat.

[0010] As a preferred technical solution of a radio frequency coaxial cable, specifically, the shielding layer is a metal braided mesh, and the metal braided mesh is made of copper wire or silver-plated copper wire. The shielding layer can effectively prevent electromagnetic interference and protect the stability of internal signal transmission.

[0011] As a preferred technical solution for a radio frequency coaxial cable, specifically, the elastic layer is made of a polyurethane elastic material, and the elastic layer can absorb the stress generated when the cable is twisted, thereby improving the anti-twisting performance of the cable and preventing the cable from being damaged due to bending.

[0012] As a preferred technical solution for a radio frequency coaxial cable, specifically, the wear-resistant layer is made of polytetrafluoroethylene material, which can improve the wear resistance of the cable and extend the service life of the cable. The wear-resistant layer can improve the wear resistance of the cable and extend the service life of the cable.

[0013] As a preferred technical solution of a radio frequency coaxial cable, specifically, the protective layer further includes an outer sheath, the wear-resistant layer is wrapped in the outer sheath, and the outer sheath is made of a weather-resistant material. The outer sheath can protect the cable from the influence of the external environment and improve the weather resistance and service life of the cable.

[0014] Compared with the prior art, the present application has the following beneficial technical effects: through the design of a central torsion frame and multiple protective layers, it can effectively resist external twisting forces, protect the internal structure of the cable from damage, and greatly improve the wear resistance, weather resistance and other properties of the cable, so that the cable can work stably in various environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A cross-sectional view of a RF coaxial cable.

[0016] Figure 2 It is a schematic diagram of the longitudinal section of the radio frequency coaxial cable.

[0017] Figure 3 It is an axial cross-sectional view of the RF coaxial cable.

[0018] The following is a description of the markings in the accompanying drawings of the specification:

[0019] 10. Central torsion-resistant frame; 11. Frame core; 12. Assembly groove; 13. Torsion-resistant block; 14. Torsion-resistant groove; 15. Through hole; 20. Inner conductor; 21. Torsion-resistant cushion layer; 30. Insulation layer; 40. Shielding layer; 50. Elastic layer; 51. Heat dissipation protrusion; 52. Heat dissipation cavity hole; 60. Wear-resistant layer; 70. Outer protective layer. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] In the following embodiments, the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of the present invention, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and therefore cannot be understood as limiting the present invention. In addition, the terms: first, second, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meaning of the above terms in this practicality according to the specific circumstances.

[0023] Reference Figures 1 to 3 A radio frequency coaxial cable comprises a central torsion frame, an inner conductor, an insulating layer, a shielding layer and a multi-layer protective layer. The inner conductor is mounted on the central torsion frame, the insulating layer is wrapped around the outer side of the inner conductor, and the shielding layer is wrapped around the outer side of the insulating layer. The multi-layer protective layer comprises at least two protective layers of different materials, the innermost layer is an elastic layer, and the outermost layer is a wear-resistant layer.

[0024] Wherein, the central anti-torsion frame is made of flexible plastic. The central anti-torsion frame includes a frame core, and a plurality of anti-torsion parts are arranged on the frame core, and assembly grooves for assembling inner conductors are formed between the anti-torsion parts. The anti-torsion part includes a plurality of equidistantly distributed anti-torsion blocks, and anti-torsion grooves are formed between the anti-torsion blocks. When the cable is twisted, the anti-torsion part is deformed, the anti-torsion groove is closed, and the anti-torsion blocks are squeezed together to prevent the cable from being further twisted and damaged. The ratio of the width at the notch of the anti-torsion groove to the width at the bottom of the groove is less than 2 / 1. This design can improve the anti-torsion and bending performance of the cable while ensuring that the cable can be flexibly bent within a certain degree. A through hole is arranged in the middle of the central anti-torsion frame. The through hole is conducive to improving the heat dissipation of the cable.

[0025] In order to further improve the cable's anti-twisting performance, a torsion-resistant cushion layer is arranged between the inner conductor and the central torsion-resistant frame. The cushion layer is made of highly elastic material and can provide buffering when the cable is subjected to torsion force, reduce direct pressure on the inner conductor, and protect the internal structure of the cable from damage.

[0026] In terms of cable material, the shielding layer is a metal braided mesh, and the metal braided mesh is made of copper wire or silver-plated copper wire. The shielding layer can effectively prevent electromagnetic interference and protect the stability of internal signal transmission. The elastic layer is made of polyurethane elastic material, and the elastic layer can absorb the stress generated when the cable is twisted, improve the anti-twisting performance of the cable, and prevent the cable from being damaged due to bending. The wear-resistant layer is made of polytetrafluoroethylene material, which can improve the wear resistance of the cable and extend the service life of the cable. The wear-resistant layer can improve the wear resistance of the cable and extend the service life of the cable.

[0027] The thickness of the elastic layer is greater than that of the wear-resistant layer, and a plurality of axially arranged heat dissipation protrusions are arranged on the outer surface of the elastic layer. A heat dissipation cavity is arranged in the heat dissipation protrusion, and the heat dissipation cavity is filled with a heat-conducting medium. The thickness of other protective layers located outside the elastic layer at the heat dissipation cavity corresponding to the heat dissipation cavity is less than the thickness at other positions. This technical solution helps to quickly disperse the concentrated heat to the entire elastic layer and even a wider area, and dissipate the heat outward through the thinner thickness of the protective layer, reducing aging, deformation and other problems caused by high temperature.

[0028] In addition, the protective layer also includes an outer sheath, the wear-resistant layer is wrapped in the outer sheath, and the outer sheath is made of weather-resistant material. The outer sheath can protect the cable from the influence of the external environment and improve the weather resistance and service life of the cable. The surface of the outer sheath also has an anti-ultraviolet (UV) treatment to enhance its weather resistance and prevent aging and performance degradation due to long-term exposure to sunlight. This treatment can significantly improve the durability of the cable in outdoor environments and maintain the flexibility and protective performance of the outer sheath.

[0029] The multiple protective layers are bonded to each other by hot melt adhesive or chemical adhesive to ensure close bonding and overall stability between the layers. This bonding method can not only provide good mechanical strength, but also maintain stability under different environmental conditions, prevent the intrusion of moisture and corrosive substances, thereby further improving the service life and reliability of the cable.

[0030] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A radio frequency coaxial cable, characterized in that: It includes a central torsion frame, an inner conductor, an insulating layer, a shielding layer and a multi-layer protective layer; the inner conductor is assembled on the central torsion frame, the insulating layer is wrapped around the outer side of the inner conductor, and the shielding layer is wrapped around the outer side of the insulating layer; the multi-layer protective layer includes at least two layers of protective layers made of different materials, the innermost layer is an elastic layer, and the outermost layer is a wear-resistant layer.

2. A radio frequency coaxial cable according to claim 1, characterized in that: The central anti-torsion frame is made of flexible plastic; the central anti-torsion frame includes a frame core, a plurality of anti-torsion parts are arranged on the frame core, and assembly grooves for assembling inner conductors are formed between the anti-torsion parts; the anti-torsion parts include a plurality of equidistantly distributed anti-torsion blocks, and anti-torsion grooves are formed between the anti-torsion blocks.

3. A radio frequency coaxial cable according to claim 2, characterized in that: The width of the anti-torsion groove at the notch opening is less than 2 / 1 of the width at the groove bottom.

4. The radio frequency coaxial cable according to claim 2, characterized in that: An anti-torsion cushion layer is arranged between the inner conductor and the assembly groove, and the cushion layer is made of elastic material.

5. The radio frequency coaxial cable according to claim 2, characterized in that: The outer surface of the elastic layer is provided with a plurality of axially arranged heat dissipation protrusions, the heat dissipation protrusions are provided with heat dissipation cavities, and the heat dissipation cavities are filled with heat-conducting medium. The thickness of other protective layers located outside the elastic layer at the heat dissipation cavities corresponding to the heat dissipation cavities is smaller than the thickness at other positions.

6. The radio frequency coaxial cable according to claim 1, characterized in that: The shielding layer is a metal braided mesh, and the metal braided mesh is made of copper wire or silver-plated copper wire.

7. The radio frequency coaxial cable according to claim 1, characterized in that: The elastic layer is made of polyurethane elastic material.

8. The radio frequency coaxial cable according to claim 1, characterized in that: The wear-resistant layer is made of polytetrafluoroethylene material.

9. The radio frequency coaxial cable according to claim 1, characterized in that: The protective layer also includes an outer sheath, the wear-resistant layer is wrapped in the outer sheath, and the outer sheath is made of weather-resistant material.

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