High-strength ultra-thin cable

Abstract

The utility model belongs to the technical field of cables, and particularly relates to a high-strength ultra-thin cable. The cable provided by the utility model comprises four groups of wire cores, and a cable protection sleeve is arranged outside the wire cores. A steel core is arranged in the center of the four groups of wire cores, and the four groups of wire cores are twisted together around the steel core. According to the utility model, the bending radian of the cable can be limited through the additionally arranged steel core, so that the situation that the bending fatigue of the cable is reduced due to excessive bending of the cable is avoided, and meanwhile, the overall strength of the cable can be improved and the bending fatigue of the cable is prevented through twisting the wire cores together. Besides, the exterior of the wire core is wrapped with a water-blocking wrapping tape, and the waterproof isolation sleeve and the filled water-blocking rubber can effectively play a water-blocking role, thereby preventing external water from entering the cable to cause short circuit and even fire, effectively playing a role in protecting the cable, and improving the service life of the cable. The waterproof wrapping tape further improves the waterproof effect of the cable.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, and in particular relates to a high-strength and ultra-thin cable. Background Art

[0002] A cable is a conductive material used to transmit electrical energy, communication signals or data. It is usually composed of one or more electrical conductors (such as copper or aluminum wires) that are wrapped in insulating materials to prevent current leakage and protect the cable from the external environment. Ultra-fine cables usually refer to cables with very small diameters. These cables are designed for specific application scenarios, such as micro devices, precision instruments, endoscopes in medical equipment, or other space-constrained environments. These cables are capable of transmitting power and data, and due to their small size, they provide better flexibility and ease of wiring without sacrificing performance.

[0003] A high-strength, thin-diameter cable is disclosed in a Chinese utility model patent with announcement number CN220106067U. When the cable is bent and stressed, the stress is mainly borne by the aramid yarn layer inside the cable core, and the stress is borne by the center body and the mesh layer outside, thereby improving the bending fatigue resistance of the cable and making it suitable for use in occasions requiring reciprocating motion; a fireproof layer is arranged on the outermost layer to improve the overall wear resistance and tear resistance of the cable as well as the fire retardant performance.

[0004] However, when the thin-diameter cable is in use, it is easy to break during the reciprocating motion due to its small diameter, thus causing certain dangers.

[0005] In summary, there is a need for an ultra-thin cable with high strength and bending resistance. Utility Model Content

[0006] The utility model aims to provide a high-strength ultra-fine cable. The ultra-fine cable can limit the bending curvature of the cable by adding a steel core, thereby avoiding excessive bending of the cable to reduce its bending fatigue. At the same time, by twisting the wire cores together, the overall strength can be improved to prevent the cable from bending fatigue.

[0007] The technical solution adopted by the utility model to solve the above problems is: a high-strength ultra-thin cable, comprising: a wire core, the wire core is arranged in four groups, and a cable protective sleeve is arranged outside the wire core;

[0008] A steel core is arranged at the center of the four groups of wire cores and the four groups of wire cores are twisted together around the steel core.

[0009] The core of a cable usually refers to the part of the cable that conducts current or signals. It is the core component of the cable and is responsible for the actual transmission of power or data. The cable sheath is a protective covering on the outer layer of the cable, designed to protect the core from physical damage, chemical corrosion, moisture intrusion, UV exposure, and other environmental factors that may negatively affect the performance of the cable.

[0010] Among them, the steel core in the cable structure refers to the steel conductor located in the center of the cable. Its characteristics are that it provides additional strength and support while still allowing the cable to transmit electrical energy or signals. The steel core can be a single steel wire or multiple steel wires twisted together. The steel core provides extremely high mechanical strength, allowing the cable to withstand greater tensile forces and external pressures, reducing the risk of breakage under multiple bending conditions. And the twisted structure of the core allows the cable to maintain a certain degree of elasticity when subjected to force, which helps to absorb and disperse length changes or other forms of mechanical stress caused by temperature changes or other external factors.

[0011] A further preferred technical solution is that the wire core includes a conductor and a protective sheath layer arranged outside the conductor.

[0012] A further preferred technical solution is that the protective sleeve layer includes, from the outside to the inside, an outer jacket, a shielding layer and an insulating layer.

[0013] Among them, the jacket is the outermost part of the cable, which is directly exposed to the external environment. Its main function is to provide physical protection to prevent the internal structure of the cable from mechanical damage, chemical corrosion, moisture intrusion and ultraviolet radiation. The materials commonly used for the jacket include polyvinyl chloride (PVC), polyethylene (PE), cross-linked polyethylene (XLPE) and rubber. The shielding layer is located between the jacket and the insulation layer. Its main function is to reduce electromagnetic interference and protect the signal transmission inside the cable from the influence of external electromagnetic fields. At the same time, it also prevents the electromagnetic field generated by the cable itself from interfering with surrounding equipment. The shielding layer is usually made of metal materials, such as copper tape, copper wire, aluminum foil, etc., or it can be a metal braided mesh. The insulation layer is a layer of material wrapped around the cable conductor. Its main function is to prevent current leakage and ensure that electrical energy is safely and effectively transmitted from one end to another. The insulation layer material needs to have high electrical insulation performance. Common materials include polyethylene (PE), cross-linked polyethylene (XLPE), rubber and PVC. The thickness and material type of the insulation layer depend on the voltage level and application scenario that the cable needs to withstand.

[0014] A further preferred technical solution is that the shielding layer is a metal braided mesh made of tinned soft copper wires.

[0015] A further preferred technical solution is that: the outside of the wire core is wrapped with a water-blocking tape.

[0016] Among them, water-blocking tape is a material specially designed to prevent moisture penetration in cables or wires. It is usually applied to the outside of the cable core. The purpose of this tape is to add a waterproof layer to the cable structure to prevent moisture from spreading along the cable, especially when the cable is damaged or damp. This is essential to maintain the performance of the cable and extend its service life. Water-blocking tape is a strip made of special materials that are highly waterproof. The material of the water-blocking tape can be polymer, rubber or other synthetic materials. These materials have been specially treated to effectively prevent moisture from entering the cable.

[0017] A further preferred technical solution is that the gaps between the wire cores are filled with flame retardant fillers.

[0018] Among them, flame retardant fillers are special materials used to fill the gaps between wire cores in cable manufacturing. Their main purpose is to improve the safety performance of cables in the event of fire. This filler slows down the spread of fire and increases the integrity of the cable structure, thereby providing valuable time for emergency evacuation and fire control. These fillers are usually made of chemicals with flame retardant properties, such as flame retardant-treated polymers, mineral fillers, etc. They are not easy to burn and can produce less smoke and harmful gases during combustion.

[0019] A further preferred technical solution is that the cable protective sheath comprises, from the outside to the inside, a flame retardant outer sheath, a waterproof isolation sheath and a polyethylene inner layer.

[0020] Among them, the flame retardant outer sheath is the outermost protective layer of the cable, which is usually made of materials with flame retardant properties. Its main function is to prevent the spread of flames in the event of a fire and reduce the smoke and harmful gases produced by the fire. The materials of the flame retardant outer sheath can include PVC, chlorinated polyethylene (CPE), chlorosulfonated polyethylene (CSPE), and various composite materials containing flame retardants, etc. These materials can form a carbonized layer at high temperatures, thereby isolating oxygen and delaying the spread of fire. The waterproof isolation sleeve is located in the middle layer of the cable. Its main purpose is to prevent moisture from penetrating into the cable and protect the inner conductor from moisture or water. This layer is usually made of rubber, special polymers, or materials with waterproof additives, and has good waterproof sealing properties. The polyethylene inner layer is a layer of insulating material that is close to the cable conductor. It mainly provides electrical insulation to prevent short circuits or current leakage. Polyethylene (PE) is a commonly used cable insulation material because it has excellent electrical properties such as high electrical insulation strength, low dielectric constant and dielectric loss. Polyethylene also has good chemical stability, wear resistance and flexibility, and is suitable for a variety of environments.

[0021] A further preferred technical solution is that a heat insulating lining is also provided inside the polyethylene inner layer.

[0022] Among them, the thermal insulation lining is located on the inner side of the polyethylene inner layer, close to the conductor of the cable. Its main function is to provide additional thermal insulation protection and reduce the impact of heat generated by the conductor during operation on other parts of the cable, especially to prevent overheating from damaging insulating layer materials such as polyethylene.

[0023] A further preferred technical solution is that an interlayer is provided between the waterproof isolation sleeve and the polyethylene inner layer.

[0024] A further preferred technical solution is that the interior of the interlayer is filled with water-blocking rubber.

[0025] Among them, water-blocking rubber is a rubber material with excellent waterproof properties, which can effectively prevent water from passing through its channels. This material usually has high elasticity, chemical resistance and environmental aging resistance, making it excellent in waterproof protection. Water-blocking rubber can be made of different types of rubber, including natural rubber (NR), styrene-butadiene rubber (SBR), butyl rubber (IIR), ethylene-propylene rubber (EPDM), etc.

[0026] In summary, the utility model has the following benefits:

[0027] 1. The utility model can limit the bending curvature of the cable by adding a steel core, thereby avoiding the reduction of bending fatigue of the cable due to excessive bending. At the same time, by twisting the wire cores together, the overall strength can be improved to prevent the cable from bending fatigue.

[0028] 2. The utility model can effectively play a role of water blocking by providing a waterproof isolation sleeve and filling water-blocking rubber, thereby preventing external moisture from entering the cable to cause a short circuit or even a fire, effectively protecting the cable. The provided water-blocking tape further improves the waterproof effect of the cable.

[0029] 3. The utility model increases the coverage by adding a shielding layer made of tinned soft copper wire, thereby enhancing the anti-magnetic and anti-interference performance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0031] Figure 2 This is a schematic diagram of the vertical section of the three-dimensional structure of the cable protection cover of the utility model;

[0032] Figure 3 It is a schematic diagram of the vertical section three-dimensional structure of the protective cover layer of the utility model.

[0033] In the accompanying drawings, the components represented by the reference numerals are as follows: DETAILED DESCRIPTION

[0034] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0035] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0036] Example:

[0037] Please combine Figure 1-3 , a high-strength ultra-thin cable of this embodiment includes:

[0038] Four groups of wire cores 1, a cable protective sleeve 2 is added to the outside of the four groups of wire cores 1, a steel core 3 is added to the center of the four groups of wire cores 1 and the four groups of wire cores 1 are twisted together around the steel core 3, and the outside of the four groups of wire cores 1 is wrapped with a water-blocking tape 205. The added steel core 3 can limit the bending curvature of the cable, thereby avoiding the reduction of its bending fatigue due to excessive bending of the cable. By twisting the wire cores 1 together, the overall strength can be improved, and the bending fatigue of the cable can be further prevented. The gaps between the four groups of wire cores 1 are filled with flame-retardant fillers 4, which can improve the flame-retardant and fire-proof effect of the cable;

[0039] The cable protective sheath 2 includes, from the outside to the inside, a flame retardant outer sheath 201, a waterproof isolation sheath 202, a polyethylene inner layer 203 and a thermal insulation lining 204. An interlayer is arranged between the waterproof isolation sheath 202 and the polyethylene inner layer 203. The interior of the interlayer is filled with a water-blocking rubber filling 206, which can improve the waterproof effect of the cable.

[0040] The wire core 1 includes a conductor 101 and a protective sheath layer 102 arranged outside the conductor 101 .

[0041] The protective sleeve layer 102 includes, from the outside to the inside, an outer jacket 1021 , a shielding layer 1022 and an insulating layer 1023 .

[0042] The implementation principle of a high-strength ultra-fine cable in the embodiment of the present application is as follows: the flame-retardant outer sheath 201 and the thermal insulation lining 204 can improve the fire retardancy of the cable, the waterproof isolation sleeve 202, the water-blocking rubber filling 206 and the water-blocking tape 205 can improve the waterproof effect of the cable, and the added steel core 3 can limit the bending curvature of the cable, thereby avoiding excessive bending of the cable and reducing its bending fatigue. At the same time, by twisting the wire core 1 together, its overall strength can be improved, further preventing the cable from bending fatigue, and the flame-retardant filler 4 can improve the flame retardant effect of the cable.

[0043] In addition, a further improvement is that the shielding layer 1022 is made of tinned soft copper wires, which can increase the coverage area, thereby enhancing the anti-magnetic and anti-interference performance of the cable.

[0044] In addition, the same or similar element symbols are used to refer to the same or similar parts or steps in the drawings and descriptions as much as possible. The drawings are presented in simplified form and are not drawn to exact scale. For convenience and clarity only, directional terms such as top, bottom, left, right, upward, above, above, below, below, behind, and in front may be used with respect to the drawings. These and similar directional terms should not be construed as limiting the scope of the present disclosure in any way.

Claims

1. A high-strength ultra-thin cable, characterized in that: include: Wire cores (1), the wire cores (1) being arranged in four groups, and the outside of the wire cores (1) being provided with a cable protective sheath (2); A steel core (3) is provided at the center of the four groups of wire cores (1), and the four groups of wire cores (1) are twisted together around the steel core (3).

2. A high-strength ultra-thin cable according to claim 1, characterized in that: The wire core (1) comprises a conductor (101) and a protective sheath layer (102) arranged outside the conductor (101).

3. A high-strength ultra-thin cable according to claim 2, characterized in that: The protective sleeve layer (102) comprises, from the outside to the inside, an outer jacket (1021), a shielding layer (1022) and an insulating layer (1023).

4. A high-strength ultra-thin cable according to claim 3, characterized in that: The shielding layer (1022) is a metal braided mesh made of tinned soft copper wires.

5. A high-strength ultra-thin cable according to claim 1, characterized in that: The outside of the wire core (1) is wrapped with a water-blocking tape (205).

6. A high-strength ultra-thin cable according to claim 1, characterized in that: The gaps between the wire cores (1) are filled with flame retardant fillers (4).

7. A high-strength ultra-thin cable according to claim 1, characterized in that: The cable protective sheath (2) comprises, from the outside to the inside, a flame-retardant outer sheath (201), a waterproof isolation sheath (202), and a polyethylene inner layer (203).

8. A high-strength ultra-thin cable according to claim 7, characterized in that: A heat insulating lining (204) is also provided on the inner side of the polyethylene inner layer (203).

9. A high-strength ultra-thin cable according to claim 7, characterized in that: An interlayer is provided between the waterproof isolation sleeve (202) and the polyethylene inner layer (203).

10. A high-strength ultra-thin cable according to claim 9, characterized in that: The interior of the interlayer is filled with water-blocking rubber (206).

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