A coaxial cable with high tensile strength

Abstract

The utility model relates to cable technical field, concretely is a kind of coaxial cable with high tensile property, including center conductor, the outside of center conductor is equipped with fixed insulating layer, the outside of insulating layer is equipped with fixed shielding layer, the outside of shielding layer is equipped with fixed inner protective layer, the outside of inner protective layer is equipped with fixed outer protective layer, reinforcing structure is embedded between outer protective layer and inner protective layer, and the outer wall of outer protective layer is equipped with tensile deformation groove;Beneficial effects are that: reinforcing rib is embedded between inner protective layer and outer protective layer, forms independent tensile layer, and the function of center conductor, insulating layer and shielding layer is decoupled, avoid that pulling force is directly transmitted to signal transmission core component;Through the corrugated groove of outer protective layer, energy is absorbed by arc surface deformation when tensioning, avoid that outer protective layer is directly broken, while maintaining cable overall flexibility.

Description

Technical Field

[0001] This utility model relates to the field of cables, specifically a coaxial cable with high tensile strength. Background Technology

[0002] In fields such as communications, power transmission, and industrial control, coaxial cables serve as a critical signal transmission medium, and their performance directly affects the stability and reliability of the system.

[0003] However, traditional coaxial cables face the following technical bottlenecks in complex applications: Traditional coaxial cables typically rely on a single material (such as copper or plastic) to withstand tensile force. Under dynamic loads (such as robotic arm movements) or high-strength tensile conditions, they are prone to breakage due to material fatigue, leading to signal interruption or equipment damage. In existing technologies, some cables improve tensile strength by increasing the outer layer thickness, but this reduces cable flexibility, making it difficult to adapt to installation requirements in confined spaces or with frequent bending. In high-voltage environments (such as building wiring) or mechanical compression scenarios, the outer protective layer of traditional cables is prone to cracking due to localized stress concentration. These cracks may extend along the inner wall of the protective layer to the insulation or shielding layer, causing signal leakage or short-circuit risks. Utility Model Content

[0004] The purpose of this invention is to provide a coaxial cable with high tensile strength to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coaxial cable with high tensile strength, comprising a central conductor, an insulating layer fixedly sleeved on the outside of the central conductor, a shielding layer fixedly sleeved on the outside of the insulating layer, an inner protective layer fixedly sleeved on the outside of the shielding layer, an outer protective layer fixedly sleeved on the outside of the inner protective layer, a reinforcing structure embedded between the outer protective layer and the inner protective layer, and a tensile deformation groove provided on the outer wall of the outer protective layer.

[0006] Preferably, the outer wall of the inner protective layer is provided with a reserved groove, which is U-shaped. There are multiple reserved grooves, which are distributed circumferentially around the inner protective layer as the central axis, and the reinforcing structure is fixed in the reserved groove.

[0007] Preferably, the reinforcing structure includes reinforcing ribs, and the reinforcing ribs and the reserved grooves correspond one-to-one.

[0008] Preferably, the reinforcing rib is selected from at least one of aramid fiber and metal wire.

[0009] Preferably, a buffer structure is provided between the inner protective layer and the outer protective layer, and the buffer structure and the reinforcing structure are distributed alternately.

[0010] Preferably, the buffer structure includes a side groove and a rubber strip fixed between the side groove and the outer protective layer. The side groove is an arc-shaped groove, which is opened on the outer ring surface of the inner protective layer. Multiple side grooves are provided, and the rubber strip is fixed between the side groove and the inner wall of the outer protective layer.

[0011] Preferably, the tensile deformation groove includes a corrugated groove, which is an arc-shaped annular groove. Multiple corrugated grooves are provided, and the multiple corrugated grooves are arranged at equal intervals and of equal size along the long side of the outer protective layer.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The coaxial cable with high tensile strength proposed in this utility model has a reinforcing rib embedded between the inner and outer protective layers to form an independent tensile layer, which decouples the functions of the central conductor, insulation layer and shielding layer, and avoids the tensile force being directly transmitted to the core signal transmission components; the corrugated groove of the outer protective layer absorbs energy through the arc deformation during tension, preventing the outer protective layer from breaking directly, while maintaining the overall flexibility of the cable. Attached Figure Description Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 3 This is a front view of the structure of this utility model; Figure 4 for Figure 3 Sectional view of the structure at point AA; Figure 5 This is a schematic diagram of the inner protective layer structure of this utility model; Figure 6 This is a schematic diagram of the outer protective layer structure of this utility model.

[0013] In the diagram: 1. Center conductor; 2. Insulation layer; 3. Shielding layer; 4. Inner protective layer; 5. Outer protective layer; 6. Reserved groove; 7. Reinforcing rib; 8. Side groove; 9. Rubber connecting strip; 10. Corrugated groove. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] Please see Figures 1-6This utility model provides a technical solution: a coaxial cable with high tensile strength, comprising a central conductor 1, an insulating layer 2 fixedly sleeved on the outside of the central conductor 1, a shielding layer 3 fixedly sleeved on the outside of the insulating layer 2, and an inner protective layer 4 fixedly sleeved on the outside of the shielding layer 3. The inner protective layer 4 can be made of modified polyethylene material, which has high tensile strength and can effectively protect the inner shielding layer 3 and the insulating layer 2 from external environmental corrosion. The thickness of the inner protective layer 4 can be controlled between 1.2mm and 1.5mm to ensure sufficient structural strength and prevent deformation of the reserved groove 6 and the side groove 8 due to external pressure. An outer protective layer 5 is fixedly sleeved on the outside of the inner protective layer 4. The outer protective layer 5 can be made of a blend of thermoplastic elastomer and polyvinyl chloride, which has good flexibility and wear resistance. A reinforcing structure is embedded between the outer protective layer 5 and the inner protective layer 4. The outer wall of the inner protective layer 4 has a pre-drilled groove 6, which is U-shaped. Multiple pre-drilled grooves 6 are evenly distributed circumferentially around the inner protective layer 4. The reinforcing structure is fixed within the pre-drilled groove 6. The reinforcing structure includes reinforcing ribs 7, which correspond one-to-one with the pre-drilled groove 6. The diameter of the reinforcing ribs in the pre-drilled groove 6 is 1.2 to 1.5 times the diameter of the groove, ensuring that the reinforcing ribs are tightly embedded and will not easily come out during installation and use. The reinforcing ribs 7 are made of at least one of aramid fiber and metal wire. The reinforcing ribs 7 are embedded in the pre-drilled groove 6, and after the outer protective layer 5 is fitted over the inner protective layer 4, the outer protective layer 5 covers the reinforcing ribs 7. The addition of the reinforcing ribs 7 creates multiple reinforcing structures between the inner and outer protective layers 4, thereby improving the overall tensile strength of the coaxial cable. When aramid fiber is selected for reinforcing rib 7, the surface of the aramid fiber is modified and coated with a coupling agent. The coating thickness is 0.5μm~1μm, which can improve the adhesion between the fiber and the outer and inner protective layers, prevent the reinforcing rib from sliding relative to the groove when under stress, and ensure stable tensile performance.

[0016] A buffer structure is provided between the inner protective layer 4 and the outer protective layer 5, with the buffer structure and reinforcing structure distributed alternately. The buffer structure includes a side groove 8 and a rubber connecting strip 9 fixed between the side groove 8 and the outer protective layer 5. The side groove 8 is an arc-shaped groove, which is opened on the outer ring surface of the inner protective layer 4. There are multiple side grooves 8. The rubber connecting strip 9 is fixed between the side groove 8 and the inner wall of the outer protective layer 5. The number of rubber connecting strips 9 in each side groove 8 is not limited and is selected according to the curvature of the side groove 8. After the side groove 8 opened on the outer ring surface of the inner protective layer 4 is covered by the outer protective layer 5, the gap between the outer protective layer 5 and the side groove 8 forms a buffer cavity. When the coaxial cable is squeezed, the buffer cavity provides buffering, reducing the probability of the central conductor 1 being crushed. In addition, the buffer cavity can also break the cracks on the outer wall of the outer protective layer 5, preventing the cracks on the outer wall of the outer protective layer 5 from extending to the inner ring surface of the outer protective layer 5. The inner walls of the reserved groove 6 and the side groove 8 are coated with an anti-corrosion coating, such as epoxy resin, with a coating thickness of 0.1mm~0.2mm, to prevent cement slurry, dust and other contaminants from entering the inner protective layer 4 during construction and affecting the performance of the cable.

[0017] The outer protective layer 5 has tensile deformation grooves on its outer wall. These grooves include corrugated grooves 10, which are arc-shaped annular grooves. Multiple corrugated grooves 10 are arranged at equal intervals and of equal size along the long side of the outer protective layer 5. The outer protective layer 5 is produced using a corrugated extrusion die, and the extrusion temperature is the same as that of the inner protective layer. During extrusion, the corrugated grooves 10 are directly processed through the corrugated forming structure on the die, avoiding damage to the outer protective layer caused by subsequent secondary processing. After extrusion, the outer protective layer is cooled in a shaping sleeve. The addition of the corrugated grooves 10 causes deformation of the arc surface of the corrugated grooves 10 when the coaxial cable is tensioned, which to some extent prevents the outer protective layer 5 from being broken under tension.

[0018] The number of corrugated grooves should be selected based on the cable's outer diameter. For example, when the cable's outer diameter is 10mm~15mm, the number of corrugated grooves should be set to 3 to 6 per 10mm length, with a spacing of 1.6mm~3mm between adjacent grooves and a depth of 0.8mm~1.0mm. This parameter design can simultaneously ensure the strength and flexibility of the outer protective layer structure, reducing the minimum bending radius of the cable to 8 times the cable's outer diameter, meeting the installation requirements of confined spaces and frequent bending.

[0019] Detailed instructions for using this high tensile strength coaxial cable: Before installation, check the cable's appearance for damage, ensuring the outer protective layer (5) is undamaged, the corrugated groove (10) is undeformed, and the reinforcing ribs (7) are not loose. Select appropriate tools based on the installation scenario, such as dedicated wire strippers, cable clamps, and insulating tape. Simultaneously, measure the installation path length and allow 10% to 15% extra length when cutting the cable to avoid excessive stress due to stretching.

[0020] When laying cables, slowly unfold them along the preset path, avoiding sudden pulling or twisting to prevent misalignment between the reinforcing rib 7 and the reserved groove 6. At bends, ensure the bending radius is at least 8 times the cable's outer diameter to prevent deformation of the buffer cavity due to pressure between the inner protective layer 4 and the outer protective layer 5. Secure the cable with cable clamps every 50-100 cm, avoiding the buffer structure (area of ​​the side groove 8 and rubber connecting strip 9) to prevent localized stress concentration. When stripping the outer protective layer 5, use a dedicated wire stripping tool, ensuring the reserved groove 6 and side groove 8 on the outer wall of the inner protective layer 4 remain intact. When crimping connectors, ensure the crimping force is evenly distributed to prevent deformation of the inner protective layer 4 due to excessive localized pressure, which could affect the buffer cavity's function.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coaxial cable with high tensile strength, comprising a center conductor (1), an insulation layer (2) fixedly sleeved on the outside of the center conductor (1), a shielding layer (3) fixedly sleeved on the outside of the insulation layer (2), and an inner protective layer (4) fixedly sleeved on the outside of the shielding layer (3), characterized in that: An outer protective layer (5) is fixedly fitted on the outside of the inner protective layer (4). A reinforcing structure is embedded between the outer protective layer (5) and the inner protective layer (4), and the outer wall of the outer protective layer (5) is provided with a tensile deformation groove.

2. The coaxial cable with high tensile strength according to claim 1, characterized in that: The outer wall of the inner protective layer (4) is provided with a reserved groove (6). The reserved groove (6) is in the shape of a "U". There are multiple reserved grooves (6). The multiple reserved grooves (6) are distributed in a circle around the inner protective layer (4) as the central axis. The reinforcing structure is fixed in the reserved groove (6).

3. A coaxial cable with high tensile strength according to claim 2, characterized in that: The reinforcing structure includes reinforcing ribs (7), and the reinforcing ribs (7) and the reserved grooves (6) correspond one-to-one.

4. A coaxial cable with high tensile strength according to claim 3, characterized in that: The reinforcing rib (7) is selected from at least one of aramid fiber and metal wire.

5. A coaxial cable with high tensile strength according to claim 1, characterized in that: A buffer structure is provided between the inner protective layer (4) and the outer protective layer (5), and the buffer structure and the reinforcing structure are distributed alternately.

6. A coaxial cable with high tensile strength according to claim 5, characterized in that: The buffer structure includes a side groove (8) and a rubber strip (9) fixed between the side groove (8) and the outer protective layer (5). The side groove (8) is an arc-shaped groove. The side groove (8) is opened on the outer ring surface of the inner protective layer (4). There are multiple side grooves (8). The rubber strip (9) is fixed between the side groove (8) and the inner wall of the outer protective layer (5).

7. A coaxial cable with high tensile strength according to claim 1, characterized in that: The tensile deformation groove includes a corrugated groove (10), which is an arc-shaped annular groove. Multiple corrugated grooves (10) are provided, and the multiple corrugated grooves (10) are arranged at equal distances and of equal size along the long side of the outer protective layer (5).

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