Bending-resistant coaxial cable

Abstract

The utility model relates to the technical field of coaxial cables, and discloses a bending-resistant coaxial cable, which comprises a cable, a first inner conductor is arranged in the cable, a plurality of second inner conductors are arranged on the outer surface of the first inner conductor in a surrounding manner, and a first insulating layer is arranged between the first inner conductor and the second inner conductors. A plurality of different protection layer structures are arranged outside the cable to achieve different effects, the layers of inner conductors are separated through the first insulating layers, the layered structure can effectively utilize space, efficient transmission of various signals is achieved in one cable, the insulating layers can improve the signal transmission safety of the cable, and the service life of the cable is prolonged. The electromagnetic shielding enhancement layer can effectively prevent external electromagnetic signals from interfering transmission signals in the cable, the waterproof layer can effectively prevent moisture from entering the cable, the protection layer can prevent the internal structure of the cable from being damaged, external physical abrasion, chemical corrosion and ultraviolet irradiation to a certain degree are resisted, and the service life of the cable is prolonged.

Description

Technical Field

[0001] This practical application is in the field of coaxial cable technology, specifically a bend-resistant coaxial cable. Background Technology

[0002] With the rapid development of modern communication technology, the requirements for signal transmission quality and stability are becoming increasingly stringent. Whether in the construction of wired communication networks or in signal connections between various electronic devices, reliable transmission media are essential. Coaxial cable, as a widely used signal transmission cable, plays a crucial role in many fields such as television broadcasting, communication base stations, and computer networks. For example, in 5G communication base stations, high-frequency signals need to be transmitted efficiently between the base station and the antenna to ensure accurate transmission and reception of high-speed data. Traditional coaxial cables have significant shortcomings when facing complex operating environments and frequent bending. Furthermore, traditional coaxial cables lack a multi-layered protective structure, making them susceptible to damage and reducing their lifespan. When the cable is bent, the outer protective layer bends along with it to provide protection and prevent damage to the internal structure of the coaxial cable.

[0003] Therefore, a utility model of a bend-resistant coaxial cable is proposed to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a bend-resistant coaxial cable to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bend-resistant coaxial cable, comprising a cable, wherein an inner conductor one is disposed inside the cable, and a plurality of inner conductors two are disposed around the outer surface of the inner conductor one, an insulation layer one is disposed between the inner conductor one and the inner conductors two, an insulation layer two is disposed on the outer surface of the cable, an electromagnetic shielding enhancement layer is disposed on the outer surface of the insulation layer two, a waterproof layer is disposed on the outer surface of the electromagnetic shielding enhancement layer, and a protective layer is disposed on the outer surface of the waterproof layer.

[0006] Preferably, a polyimide insulating layer is disposed inside the second insulating layer, and a polyvinyl chloride insulating layer is disposed inside the second insulating layer near the polyimide insulating layer, wherein the polyimide insulating layer and the polyvinyl chloride insulating layer have the same thickness.

[0007] Preferably, a nickel-zinc ferrite thin film layer is disposed inside the electromagnetic shielding enhancement layer, and a copper braided mesh layer is disposed inside the electromagnetic shielding enhancement layer near the nickel-zinc ferrite thin film layer.

[0008] Preferably, the waterproof layer has a polyurea coating inside, and the thickness of the polyurea coating is less than the thickness of the cable.

[0009] Preferably, a silicone rubber layer is disposed inside the protective layer, and a polycarbonate layer is disposed inside the protective layer near the silicone rubber layer, wherein the silicone rubber layer and the polycarbonate layer have the same thickness.

[0010] Preferably, the thickness of the protective layer is less than the thickness of the cable, and the thickness of the electromagnetic shielding enhancement layer is less than the thickness of the cable.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model features multiple different protective layers on the outside of the cable to achieve different effects. The conductors in each layer are separated by an insulation layer. This layered structure can effectively utilize space and achieve efficient transmission of multiple signals in a single cable. The insulation layer can increase the security of cable signal transmission, the electromagnetic shielding enhancement layer can effectively prevent external electromagnetic signals from interfering with the signals transmitted inside the cable, the waterproof layer can effectively prevent moisture from entering the cable, and the protective layers can prevent damage to the internal structure of the cable, resist external physical wear, chemical corrosion, and a certain degree of ultraviolet radiation, thus extending the service life of the cable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the coaxial cable of this utility model;

[0014] Figure 2 This is a schematic diagram of the polyimide insulation layer and the polyvinyl chloride insulation layer of this utility model;

[0015] Figure 3 This is a schematic diagram of the nickel-zinc ferrite thin film layer and the copper woven mesh layer of this utility model;

[0016] Figure 4 This is a schematic diagram of the waterproof layer and polyurea coating of this utility model;

[0017] Figure 5 This is a schematic diagram of the silicone rubber layer and polycarbonate layer of this utility model.

[0018] The image shows:

[0019] In the diagram: 1. Cable; 2. Inner conductor two; 3. Insulation layer one; 4. Insulation layer two; 5. Electromagnetic shielding reinforcement layer; 6. Waterproof layer; 7. Protective layer; 8. Polyimide insulation layer; 9. Polyvinyl chloride insulation layer; 10. Nickel-zinc ferrite film layer; 11. Copper braided mesh layer; 12. Polyurea coating; 13. Silicone rubber layer; 14. Polycarbonate layer; 15. Inner conductor one. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-5 A bend-resistant coaxial cable includes a cable 1. The cable 1 has an inner conductor 15 inside, and multiple inner conductors 2 surround the outer surface of the inner conductor 15. An insulation layer 3 is disposed between the inner conductors 15 and the inner conductors 2. An insulation layer 4 is disposed on the outer surface of the cable 1. An electromagnetic shielding reinforcement layer 5 is disposed on the outer surface of the insulation layer 4. A waterproof layer 6 is disposed on the outer surface of the electromagnetic shielding reinforcement layer 5. A protective layer 7 is disposed on the outer surface of the waterproof layer 6. The inner conductors are separated by the insulation layer 3, which can be made of polyethylene. This layered structure effectively utilizes space, enabling efficient transmission of multiple signals within a single cable 1. The multiple protective layers 7 outside the cable 1 provide protection. The insulation layer increases the signal transmission security of the cable 1, the shielding layer effectively prevents interference from external electromagnetic signals, the waterproof layer 6 effectively prevents moisture from entering the cable 1, and the protective layer 7 prevents damage to the internal structure of the cable 1, resists external physical wear, chemical corrosion, and a certain degree of ultraviolet radiation, extending the service life of the cable 1.

[0022] In this embodiment, preferably, a polyimide insulation layer 8 is disposed inside the second insulation layer 4, and a polyvinyl chloride insulation layer 9 is disposed inside the second insulation layer 4 near the polyimide insulation layer 8. The polyimide insulation layer 8 and the polyvinyl chloride insulation layer 9 have the same thickness. The polyimide insulation layer 8 is used as the inner layer, mainly utilizing its high insulation performance and stability in harsh environments to ensure the signal transmission safety of the cable 1 in special environments. The outer layer is a polyvinyl chloride insulation layer 9. The mechanical properties of the polyvinyl chloride insulation layer 9 can protect the cable 1 from external mechanical damage, such as scratches and compression that may be encountered during the laying of the cable 1. At the same time, the polyvinyl chloride insulation layer 9 can also prevent external chemicals from corroding the inner polyimide insulation layer 8 to a certain extent, thereby enhancing the overall durability of the cable 1.

[0023] In this embodiment, preferably, a nickel-zinc ferrite thin film layer 10 is disposed inside the electromagnetic shielding enhancement layer 5, and a copper braided mesh layer 11 is disposed inside the electromagnetic shielding enhancement layer near the nickel-zinc ferrite thin film layer 10. The combination of the nickel-zinc ferrite thin film layer and the copper braided mesh layer 11 provides good absorption capability for high-frequency electromagnetic interference, while the copper braided mesh has excellent conductivity and can reflect and reduce external electromagnetic interference. This combination can provide wider bandwidth electromagnetic shielding, effectively prevent external electromagnetic signals from interfering with the signals transmitted in the cable 1, and also reduce signal leakage in the cable 1, ensuring the confidentiality and integrity of signal transmission.

[0024] In this embodiment, preferably, a polyurea coating 12 is provided inside the waterproof layer 6. The thickness of the polyurea coating 12 is less than the thickness of the cable 1. The waterproof layer 6 can be made of a material such as the polyurea coating 12. The polyurea coating 12 has excellent waterproof performance and can form a continuous and seamless waterproof layer 6, effectively preventing moisture from entering the interior of the cable 1. At the same time, it also has good chemical corrosion resistance and flexibility, and will not break due to bending of the cable 1.

[0025] In this embodiment, preferably, a silicone rubber layer 13 is disposed inside the protective layer 7, and a polycarbonate layer 14 is disposed inside the protective layer 7 near the silicone rubber layer 13. The silicone rubber layer 13 and the polycarbonate layer 14 have the same thickness. In addition to good elasticity, silicone rubber also has excellent high and low temperature resistance and electrical insulation. The inner silicone rubber layer 13 buffers bending stress and prevents damage to the internal structure of the cable 1. The outer polycarbonate layer 14 resists external physical wear, chemical corrosion and a certain degree of ultraviolet radiation, thus extending the service life of the cable 1.

[0026] In this embodiment, preferably, the thickness of the protective layer 7 is less than the thickness of the cable 1, and the thickness of the shielding layer is less than the thickness of the cable 1. When the thickness of the electromagnetic shielding enhancement layer 5 is less than the thickness of the cable 1, this helps to make more rational use of material resources. The thinner shielding layer reduces the overall weight of the cable 1, which can reduce the overall load of the equipment, reduce energy consumption, and make it easier to operate during installation. When the thickness of the protective layer 7 is smaller, the flexibility of the cable 1 will be improved. The cable 1 often needs to be bent during use. An excessively thick protective layer 7 will increase the rigidity of the cable 1, causing the protective layer 7 to break or the internal structure to be damaged when the cable 1 is bent. A thinner protective layer 7 can better adapt to the bending of the cable and ensure the normal use of the cable 1.

[0027] In this embodiment, a testing device for a bend-resistant coaxial cable protects the cable 1 through a multi-layered structure, enabling the cable 1 to achieve efficient transmission of various signals. The device provides different levels of protection for the cable 1: an insulation layer increases the signal transmission security, a shielding layer 5 effectively prevents external electromagnetic signals from interfering with the signals transmitted within the cable 1, a waterproof layer 6 effectively prevents moisture from entering the cable 1, and a protective layer 7 prevents damage to the internal structure of the cable 1 and resists external physical wear and chemical corrosion, thereby improving the cable 1's protective and toughness functions and extending its service life.

[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A bend-resistant coaxial cable, comprising a cable (1), characterized in that: The cable (1) has an inner conductor (15) inside, and multiple inner conductors (2) surround the outer surface of the inner conductor (15). An insulation layer (3) is provided between the inner conductor (15) and the inner conductors (2). An insulation layer (4) is provided on the outer surface of the cable (1). An electromagnetic shielding enhancement layer (5) is provided on the outer surface of the insulation layer (4). A waterproof layer (6) is provided on the outer surface of the electromagnetic shielding enhancement layer (5). A protective layer (7) is provided on the outer surface of the waterproof layer (6). The second insulating layer (4) is provided with a polyimide insulating layer (8) inside, and a polyvinyl chloride insulating layer (9) is provided inside the second insulating layer (4) near the polyimide insulating layer (8). The polyimide insulating layer (8) and the polyvinyl chloride insulating layer (9) have the same thickness. The electromagnetic shielding enhancement layer (5) has a nickel-zinc ferrite thin film layer (10) inside, and a copper braided mesh layer (11) is provided inside the electromagnetic shielding enhancement layer (5) near the nickel-zinc ferrite thin film layer (10). The waterproof layer (6) is provided with a polyurea coating (12) inside, and the thickness of the polyurea coating (12) is less than the thickness of the cable (1); The protective layer (7) has a silicone rubber layer (13) inside, and a polycarbonate layer (14) is provided inside the protective layer (7) near the silicone rubber layer (13). The silicone rubber layer (13) and the polycarbonate layer (14) have the same thickness.

2. The bend-resistant coaxial cable according to claim 1, characterized in that: The thickness of the protective layer (7) is less than the thickness of the cable (1), and the thickness of the electromagnetic shielding enhancement layer (5) is less than the thickness of the cable (1).

Images