Bending-resistant flexible cable

Abstract

The utility model relates to the technical field of cables, and discloses an anti-bending flexible cable, which comprises a protective layer, three wire cores are arranged in the protective layer, an insulating layer is coated on the surface of each wire core, a shielding layer is coated on the surface of each insulating layer, and a filling layer is filled in the protective layer. According to the bending-resistant flexible cable, the spiral spring is arranged outside the protection layer to form a firm protection barrier, when the cable is bent by external force, the spiral spring can absorb and disperse stress and reduce deformation and damage in the cable, and meanwhile, the elastic characteristic of the spiral spring enables the cable to quickly restore to the original shape after being bent, so that the bending resistance of the cable is improved. By adopting the design, the bending resistance of the cable is improved, the service life of the cable is prolonged, and the external structure of the cable is arranged to be oblate, so that the bending radius can be reduced, and the extrusion and friction on the cable in the bending process can be further reduced.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a flexible cable resistant to bending. Background Technology

[0002] A cable is an electrical energy or signal transmission device, consisting of one or more mutually insulated conductors and an outer insulating protective layer, used to transmit electricity or information from one place to another. Among them, the flexural cable is a type of cable designed to withstand frequent bending and torsion, and it has high flexibility and abrasion resistance.

[0003] Because existing cables have poor bending resistance, they are easily damaged when frequently bent or twisted, and they have no resilience. This leads to a significant reduction in the service life of the cables. Furthermore, when used in complex environments, the cable sheath is easily damaged by external factors such as friction and compression, which can cause short circuits or open circuits in the internal circuitry, affecting the normal use of the cables. Utility Model Content

[0004] The technical problem to be solved by this utility model is that existing cables have poor bending resistance, are easily damaged when frequently bent or twisted, and lack resilience. Therefore, we propose a flexible cable with bending resistance.

[0005] To achieve the above objectives, this application adopts the following technical solution: a bend-resistant flexible cable, comprising a protective layer, three conductors installed inside the protective layer, an insulation layer covering the surface of the conductors, a shielding layer covering the surface of the insulation layer, a filler layer filling the interior of the protective layer, a helical spring slidably connected to the surface of the protective layer, an elastic buffer layer covering the surface of the helical spring, a gel layer covering the surface of the elastic buffer layer, a honeycomb shell covering the surface of the gel layer, and a weather-resistant coating sprayed onto the surface of the honeycomb shell.

[0006] Preferably, the material of the helical spring is carbon steel.

[0007] Preferably, the elastic buffer layer is made of polyurethane.

[0008] Preferably, the gel layer is made of silicone gel.

[0009] Preferably, the honeycomb shell is made of high-density polyethylene.

[0010] Preferably, the weather-resistant coating is made of polyester coating material.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] In this invention, by setting a helical spring on the outside of the protective layer, the bending elasticity and resilience of the cable can be effectively improved. The helical spring is tightly attached to the outer surface of the protective layer, forming a solid protective barrier. When the cable is bent by external force, the helical spring can absorb and disperse the stress, reducing the deformation and damage inside the cable. At the same time, the elastic characteristics of the helical spring allow the cable to quickly return to its original shape after bending, maintaining good performance. This design not only improves the cable's bending resistance but also extends its service life. In addition, the flattened round shape of the cable's external structure can reduce the bending radius, further reducing the compression and friction experienced by the cable during bending. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of the bend-resistant flexible cable of this utility model;

[0014] Figure 2 This is a schematic diagram of the disassembled structure of the bend-resistant flexible cable of this utility model;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the bend-resistant flexible cable of this utility model;

[0016] Figure 4 This is a schematic diagram of the anti-bending flexible cable helical spring structure of this utility model.

[0017] Legend: 1. Protective layer; 2. Core wire; 3. Insulation layer; 4. Shielding layer; 5. Filler layer; 6. Helical spring; 7. Elastic buffer layer; 8. Gel layer; 9. Honeycomb outer shell; 10. Weather-resistant coating. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0019] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this utility model provides a technical solution: a flexible cable resistant to bending, including a protective layer 1, three conductors 2 installed inside the protective layer 1, an insulation layer 3 covering the surface of the conductors 2, a shielding layer 4 covering the surface of the insulation layer 3, a filling layer 5 filling the interior of the protective layer 1, a helical spring 6 slidably connected to the surface of the protective layer 1, an elastic buffer layer 7 covering the surface of the helical spring 6, a gel layer 8 covering the surface of the elastic buffer layer 7, a honeycomb shell 9 covering the surface of the gel layer 8, and a weather-resistant coating 10 sprayed onto the surface of the honeycomb shell 9. By setting the helical spring 6 on the outside of the protective layer 1, it is possible to... To effectively improve the bending elasticity and resilience of the cable, the helical spring 6 is tightly fitted to the outer surface of the protective layer 1, forming a robust protective barrier. When the cable is bent by external force, the helical spring 6 can absorb and disperse the stress, reducing internal deformation and damage to the cable. At the same time, the elastic characteristics of the helical spring 6 allow the cable to quickly return to its original shape after bending, maintaining good performance. This design not only improves the cable's bending resistance but also extends its service life. In addition, the flat and round shape of the cable's external structure reduces the bending radius, further reducing the compression and friction experienced by the cable during bending.

[0020] Reference Figure 1 and Figure 2 As shown in this embodiment, the material of the helical spring 6 is carbon steel, which has high strength, good elasticity, and low cost. The high strength of carbon steel makes the cable less prone to breakage when subjected to large tensile or compressive forces, ensuring the overall reliability and safety of the cable. At the same time, the good elasticity of carbon steel allows the cable to have a certain buffering and recovery ability when subjected to external forces, further improving the cable's bending resistance.

[0021] Reference Figure 2 As shown in this embodiment: the elastic buffer layer 7 is made of polyurethane. By setting the elastic buffer layer 7, polyurethane has excellent wear resistance, corrosion resistance and good elasticity, which can further enhance the cable's bending resistance and service life. The elastic buffer layer 7 tightly wraps the outside of the helical spring 6 to form an additional outer layer, which can not only effectively resist the erosion of the external environment, but also provide additional support and buffer when the cable is bent, further reducing stress concentration and damage inside the cable. In addition, polyurethane material also has good self-lubricating properties, which can reduce the frictional resistance of the cable during bending and movement, making the cable smoother and more flexible during use.

[0022] Reference Figure 2As shown, in this embodiment, the gel layer 8 is made of silicone gel. Silicone gel, as a high-performance material, possesses excellent heat resistance, cold resistance, and good electrical insulation properties. In cable design, the introduction of silicone gel not only improves the overall insulation effect of the cable but also significantly enhances its stability in high or low temperature environments.

[0023] Reference Figure 2 and Figure 3 As shown in this embodiment: the honeycomb shell 9 is made of high-density polyethylene. By setting the honeycomb shell 9, high-density polyethylene, as a lightweight and tough material, has excellent mechanical strength and wear resistance. In the cable structure, using high-density polyethylene as the material of the honeycomb shell 9 can not only effectively enhance the overall structural strength of the cable, but also significantly improve the cable's tensile and tear resistance, making it suitable for use in outdoor or harsh environments. Moreover, it has a low cost and is suitable for large-scale production. The honeycomb structure can evenly distribute external loads, providing excellent compressive and impact resistance. The structure is both robust and flexible, can withstand repeated bending, and is not easily broken.

[0024] Reference Figure 2 As shown in this embodiment, the weather-resistant coating 10 is made of polyester coating material. By spraying the weather-resistant coating 10 onto the outside of the honeycomb shell 9, the polyester coating material, as a high-performance coating material, has excellent wear resistance, corrosion resistance and weather resistance. The polyester coating material can form a strong outer layer, effectively resisting moisture, chemicals and physical wear in the external environment, thereby extending the service life of the cable. In addition, the polyester coating material also has good flexibility, which can maintain the flexibility and stability of the cable when bending, further improving the bending resistance of the cable.

[0025] Working Principle: By installing a helical spring 6 on the outside of the protective layer 1, the bending elasticity and resilience of the cable can be effectively improved. The helical spring 6 is tightly attached to the outer surface of the protective layer 1, forming a solid protective barrier. When the cable is bent by external force, the helical spring 6 can absorb and disperse stress, reducing internal deformation and damage to the cable. At the same time, the elastic characteristics of the helical spring 6 allow the cable to quickly return to its original shape after bending, maintaining good performance. This design not only improves the cable's bending resistance but also extends its service life. Furthermore, the flattened oval shape of the cable's external structure reduces the bending radius, further reducing the compression and friction experienced by the cable during bending. The protective layer 1 is made of carbon steel, which has high strength and good elasticity. The low cost and high strength of carbon steel make the cable less prone to breakage under significant tensile or compressive forces, ensuring overall reliability and safety. Simultaneously, the good elasticity of carbon steel provides the cable with a certain degree of buffering and recovery capability when subjected to external forces, further improving its bending resistance. The addition of an elastic buffer layer 7, made of polyurethane, which boasts excellent wear resistance, corrosion resistance, and elasticity, further enhances the cable's bending resistance and service life. This elastic buffer layer 7 tightly wraps around the helical spring 6, forming an additional outer layer that not only effectively resists external environmental corrosion but also provides extra support and buffering during cable bending, further reducing internal stress concentration and damage. In addition, polyurethane materials have good self-lubricating properties, which can reduce the frictional resistance of the cable during bending and movement, making the cable smoother and more flexible during use. By setting a gel layer 8, made of silicone gel, a high-performance material with excellent heat resistance, cold resistance, and good electrical insulation properties, the introduction of silicone gel in cable design not only improves the overall insulation effect of the cable but also significantly enhances its stability in high or low temperature environments. Furthermore, by setting a honeycomb outer shell 9, made of high-density polyethylene, a lightweight yet tough material with excellent mechanical strength and wear resistance, high-density polyethylene is used as the honeycomb outer shell in the cable structure. The material of the honeycomb outer shell 9 not only effectively enhances the overall structural strength of the cable but also significantly improves its tensile and tear resistance, making it suitable for outdoor or harsh environments. It is also cost-effective, suitable for mass production. The honeycomb structure evenly distributes external loads, providing excellent compressive and impact resistance. The structure is both robust and flexible, able to withstand repeated bending without easily breaking. A weather-resistant coating 10 is sprayed onto the exterior of the honeycomb outer shell 9. This coating is made of polyester, a high-performance coating material with excellent abrasion resistance, corrosion resistance, and weather resistance. The polyester coating forms a robust outer layer that effectively resists moisture, chemicals, and physical abrasion from the external environment, thereby extending the cable's service life.Furthermore, the polyester coating material possesses excellent flexibility, maintaining the cable's flexibility and stability during bending, further enhancing its resistance to bending.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A kink-resistant flexible electrical cable comprising a protective layer (1), characterized in that: The inside of the protective layer (1) is internally provided with three wire cores (2), the surface of the wire core (2) is coated with an insulating layer (3), the surface of the insulating layer (3) is coated with a shielding layer (4), the inside of the protective layer (1) is filled with a filling layer (5), the surface of the protective layer (1) is slidingly connected with a spiral spring (6), the surface of the spiral spring (6) is coated with an elastic buffer layer (7), the surface of the elastic buffer layer (7) is coated with a gel layer (8), the surface of the gel layer (8) is coated with a honeycomb shell (9), and the surface of the honeycomb shell (9) is sprayed with a weather-resistant coating (10).

2. A kink-resistant flexible electrical cable according to claim 1, wherein: The material of the spiral spring (6) is carbon steel.

3. The kink-resistant flexible electrical cable of claim 1, wherein: The material of the elastic buffer layer (7) is polyurethane.

4. The kink-resistant flexible electrical cable of claim 1, wherein: The material of the gel layer (8) is silicone gel.

5. The kink-resistant, flexible electrical cable of claim 1, wherein: The material of the honeycomb shell (9) is high-density polyethylene.

6. The kink-resistant, flexible electrical cable of claim 1, wherein: The material of the weather-resistant coating (10) is polyester coating material.

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