Low-loss coaxial cable

Abstract

The utility model discloses a low-loss coaxial cable, which comprises an inner conductor, an inner insulator arranged on the outer side of the inner conductor, a plurality of first spiral grooves arranged on the outer side of the inner insulator, an outer insulator arranged on the outer side of the inner insulator, and second spiral grooves arranged on the inner side of the outer insulator and corresponding to the first spiral grooves. Tensile steel wires are arranged in the first spiral groove and the second spiral groove, a shielding layer is arranged on the outer side of the outer insulator, and a protective sleeve is arranged on the outer side of the shielding layer. The inner-layer insulator and the outer-layer insulator provided by the utility model provide double electrical isolation, effectively prevent signal loss and interference, and the tensile steel wires are arranged between the inner-layer insulator and the outer-layer insulator, so that the tensile and anti-pressure capabilities of the cable are effectively enhanced, and the cable is more stable and not easy to deform when subjected to external force. And loss or faults caused by physical stress are reduced.

Description

Technical Field

[0001] The utility model relates to a low-loss coaxial cable. Background Art

[0002] In the context of the rapid development of current technologies, the performance requirements for cables are getting higher and higher. Cables not only need to have efficient signal transmission capabilities, but also good anti-external interference performance, and at the same time, sufficient mechanical strength must be ensured to adapt to various complex usage environments.

[0003] During the installation and operation of cables, they often face numerous challenges. Mechanical damage is one of the common problems. Excessive bending, stretching or compression may damage the conductors and insulation layers of the cables, affecting their performance and possibly increasing transmission losses. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a low-loss coaxial cable to solve the problems raised in the above background art.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] A low-loss coaxial cable includes an inner conductor. An inner insulator is arranged outside the inner conductor. A plurality of first spiral grooves are arranged outside the inner insulator. An outer insulator is arranged outside the inner insulator. Second spiral grooves corresponding to the first spiral grooves are arranged inside the outer insulator. Tensile steel wires are arranged in the first spiral grooves and the second spiral grooves. A shielding layer is arranged outside the outer insulator. A protective sleeve is arranged outside the shielding layer.

[0007] Preferably, spiral protrusions are arranged on the inner insulator between two adjacent first spiral grooves.

[0008] Preferably, spiral grooves corresponding to the spiral protrusions are arranged on the outer insulator between two adjacent second spiral grooves.

[0009] Preferably, four first spiral grooves are provided.

[0010] Preferably, the four first spiral grooves are arranged on the inner insulator and are evenly distributed along its circumferential direction.

[0011] Preferably, four spiral protrusions are provided.

[0012] Preferably, the four spiral protrusions are arranged on the inner insulator and are evenly distributed along its circumferential direction.

[0013] Preferably, the cross-sections of the first spiral grooves and the second spiral grooves are both semi-circular. Half of the tensile steel wire is arranged in the first spiral groove, and the other half of the tensile steel wire is arranged in the second spiral groove.

[0014] Advantageous technical effects of the present utility model:

[0015] The inner and outer two layers of insulators provided by the present utility model provide double electrical isolation, effectively preventing signal loss and interference. A tensile steel wire is arranged between the inner and outer two layers of insulators, effectively enhancing the tensile and compressive resistance of the cable, making it more stable when subjected to external forces, not easily deformed, and reducing losses or failures caused by physical stress. Moreover, the spiral tensile steel wire can bear the forces from all directions more evenly than ordinary straight steel wires, enabling the cable to better maintain a circular shape when bent, reducing the performance degradation caused by deformation, and improving the durability and reliability of the cable. Description of the drawings

[0016] Figure 1 Schematic diagram of the coaxial cable structure of the embodiment of the present utility model;

[0017] Figure 2 Schematic cross-sectional view of the coaxial cable of the embodiment of the present utility model;

[0018] Figure 3 Schematic diagram of the inner insulator structure of the embodiment of the present utility model;

[0019] Figure 4 Schematic diagram of the outer insulator structure of the embodiment of the present utility model.

[0020] In the figure: 1, inner conductor; 2, inner insulator; 3, first spiral groove; 4, outer insulator; 5, second spiral groove; 6, tensile steel wire; 7, shielding layer; 8, protective sleeve; 9, spiral protrusion; 10, spiral groove. Detailed implementation manners

[0021] To make the technical solutions of the present utility model clearer and more definite for those skilled in the art, the present utility model will be further described in detail below in conjunction with the embodiments and the drawings, but the implementation manners of the present utility model are not limited thereto.

[0022] As Figures 1-4 shown, the low-loss coaxial cable provided in this embodiment includes an inner conductor 1, an inner insulator 2 is arranged outside the inner conductor 1, a plurality of first spiral grooves 3 are arranged outside the inner insulator 2, an outer insulator 4 is arranged outside the inner insulator 2, a second spiral groove 5 corresponding to the first spiral groove 3 is arranged inside the outer insulator 4, a tensile steel wire 6 is arranged in the first spiral groove 3 and the second spiral groove 5, the tensile steel wire 6 enhances the mechanical strength of the cable, enabling it to resist external pulling and pressure and maintain the physical stability of the cable. The spiral structure of the tensile steel wire 6 is more conducive to maintaining the shape of the cable when bent, reducing the performance degradation caused by deformation. A shielding layer 7 is arranged outside the outer insulator 4, and a protective sleeve 8 is arranged outside the shielding layer 7.

[0023] In this embodiment, as Figure 1 shown, between two adjacent first spiral grooves 3, spiral protrusions 9 are provided on the inner insulator 2, and between two adjacent second spiral grooves 5, spiral grooves 10 corresponding to the spiral protrusions 9 are provided on the outer insulator 4, which can reduce the relative movement between the inner insulator 2 and the outer insulator 4, thereby reducing the loss or performance degradation caused by friction or displacement.

[0024] In this embodiment, as Figure 2 shown, there are four first spiral grooves 3, and the four first spiral grooves 3 are on the inner insulator 2 and are evenly distributed along its circumferential direction. Each first spiral groove 3 is provided with a tensile steel wire 6, making the structure of the cable more solid and capable of better resisting the impact of external forces.

[0025] In this embodiment, as Figure 2 shown, there are four spiral protrusions 9, and the four spiral protrusions 9 are on the inner insulator 2 and are evenly distributed along its circumferential direction. The uniform distribution of the spiral protrusions 9 helps to increase the contact area between the inner insulator 2 and the outer insulator 4, thereby increasing the frictional force between them, enabling the inner and outer insulators to be more firmly combined together, making the cable more stable when subjected to external forces and not easily deformed.

[0026] In this embodiment, as Figure 1 shown, the cross-sections of both the first spiral groove 3 and the second spiral groove 5 are semi-circular. Half of the tensile steel wire 6 is arranged in the first spiral groove 3, and the other half of the tensile steel wire 6 is arranged in the second spiral groove 5. This symmetrical design helps to balance the internal structure of the cable and improve the overall stability and durability.

[0027] In summary, in this embodiment, the inner and outer two-layer insulators provided in this embodiment provide double electrical isolation, effectively preventing signal loss and interference. The tensile steel wire 6 is arranged between the inner and outer two-layer insulators, effectively enhancing the tensile and compressive resistance of the cable, making it more stable when subjected to external forces, not easily deformed, and reducing the loss or failure caused by physical stress. And the spiral tensile steel wire 6 can bear the forces from all directions more evenly than ordinary straight steel wires, enabling the cable to better maintain a circular shape when bent, reducing the performance degradation caused by deformation, and improving the durability and reliability of the cable.

[0028] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the scope disclosed by the present invention, according to the technical solution and its concept of the present invention, makes equivalent substitutions or changes, all belong to the protection scope of the present invention.

Claims

1. A low-loss coaxial cable, characterized in that: The invention comprises an inner conductor (1), an inner insulator (2) is arranged on the outer side of the inner conductor (1), a plurality of first spiral grooves (3) are arranged on the outer side of the inner insulator (2), an outer insulator (4) is arranged on the outer side of the inner insulator (2), a second spiral groove (5) corresponding to the first spiral groove (3) is arranged on the inner side of the outer insulator (4), tensile steel wires (6) are arranged in the first spiral groove (3) and the second spiral groove (5), a shielding layer (7) is arranged on the outer side of the outer insulator (4), and a protective sleeve (8) is arranged on the outer side of the shielding layer (7).

2. A low-loss coaxial cable according to claim 1, characterized in that: A spiral protrusion (9) is provided on the inner insulator (2) between two adjacent first spiral grooves (3).

3. A low-loss coaxial cable according to claim 2, characterized in that: A spiral groove (10) corresponding to the spiral protrusion (9) is provided on the outer insulator (4) between two adjacent second spiral grooves (5).

4. A low-loss coaxial cable according to claim 1, characterized in that: Four first spiral grooves (3) are provided.

5. A low-loss coaxial cable according to claim 4, characterized in that: The four first spiral grooves (3) are on the inner insulator (2) and are evenly distributed along its circumference.

6. A low-loss coaxial cable according to claim 2, characterized in that: Four spiral protrusions (9) are provided.

7. A low-loss coaxial cable according to claim 6, characterized in that: The four spiral protrusions (9) are on the inner insulator (2) and are evenly distributed along its circumference.

8. The low-loss coaxial cable according to claim 1, characterized in that: The cross-sections of the first spiral groove (3) and the second spiral groove (5) are both semicircular; half of the tensile steel wire (6) is arranged in the first spiral groove (3), and the other half of the tensile steel wire (6) is arranged in the second spiral groove (5).

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