Waterproof cable for chassis of cross-country vehicle

Abstract

The utility model relates to the technical field of automobile cables, in particular to a waterproof cable for a cross-country automobile chassis, which comprises a middle core, a conductor structure, an insulation structure and a sheath layer. The middle core is a cylinder made of a high-molecular moisture-absorbing and water-blocking material; the conductor structure is attached to the outer side of the middle core in a surrounding mode and is formed by multiple stranding of six copper stranded wires. Each copper stranded wire is formed by regularly stranding 7 groups of 7 / 0.08 mm wires by adopting a 1 + 6 structure, and the stranding pitch diameter ratio is 11-13 times; each group of 7 / 0.08 mm wires are stranded by adopting a bunching structure according to the pitch diameter ratio of 12-15 times; the surface of each copper stranded wire is also coated with a fluororesin coating; the insulating structure wraps the conductor structure and comprises a polytetrafluoroethylene film attached to the conductor structure and an expanded polytetrafluoroethylene film on the outer side of the polytetrafluoroethylene film. And the sheath layer is made of a waterproof rubber material and wraps the outer side of the insulation structure. According to the utility model, good waterproof, dustproof and corrosion-resistant performance of the cross-country vehicle chassis cable is realized, and driving safety and stable operation of an electrical system can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile cables, in particular to a waterproof cable for an off-road automobile chassis. Background Art

[0002] With the increasing degree of automobile electronics and intelligence, the connecting cables between electrical equipment in the chassis of off-road vehicles are required to have higher protection performance. Especially in the face of complex road environments and extreme climatic conditions, the cables must have good waterproof, dustproof and corrosion resistance to ensure driving safety and stable operation of the electrical system. Utility Model Content

[0003] In view of the defects in the prior art, the utility model proposes an off-road vehicle chassis waterproof cable to solve the above technical problems.

[0004] The utility model is achieved in this way:

[0005] A waterproof cable for an off-road vehicle chassis, comprising an intermediate core, a conductor structure, an insulating structure and a sheath layer; the intermediate core is a cylindrical shape made of a high molecular moisture-absorbing and water-blocking material; the conductor structure is wrapped around and attached to the outer side of the intermediate core, and is formed by multiple twisting of 6 copper strands; each copper strand is formed by regular twisting of 7 groups of 7 / 0.08 mm conductors in a 1+6 structure, with a twisted pitch ratio of 11-13 times; each group of 7 / 0.08 mm conductors is twisted in a bundled structure at a pitch ratio of 12-15 times; and a layer of fluororesin coating is also coated on the surface of each copper strand;

[0006] The insulating structure is coated on the outside of the conductor structure, including a polytetrafluoroethylene film arranged in contact with the conductor structure and an expanded polytetrafluoroethylene film on the outside thereof;

[0007] The sheath layer is made of waterproof rubber material and is wrapped around the outside of the insulation structure.

[0008] Furthermore, the fluororesin coating has a thickness of 0.05 mm to 0.10 mm.

[0009] Furthermore, the polytetrafluoroethylene film has a width of 15-20 mm, a thickness of 0.05 mm, and an overlap rate of 50%-55%.

[0010] Furthermore, the expanded polytetrafluoroethylene has a width of 18-22 mm, a thickness of 0.035 mm, and an overlap rate of 66%-70%.

[0011] Furthermore, the size of the sheath layer is 0.5mm-0.8mm.

[0012] The utility model has the following advantages and technical effects:

[0013] (1) The utility model is provided with an intermediate core and adopts a unique conductor structure, thereby enhancing the moisture and water resistance of the cable itself and improving the performance of the conductor in a humid or underwater environment: due to the internal water-absorbing material and waterproof sealing structure, the moisture that penetrates into the conductor can be effectively removed to prevent the moisture from damaging the conductor, thereby improving the performance of the conductor in a humid or underwater environment.

[0014] Prolong the service life of the conductor: It can remove moisture that penetrates into the conductor, which can effectively slow down the damage of the conductor due to moisture or corrosion, thereby extending the service life of the conductor.

[0015] Improve the reliability of electronic equipment or systems: It can improve the operating reliability of electronic equipment or systems in humid, underwater or high humidity environments, and reduce failures or damage caused by moisture or corrosion of conductors.

[0016] (2) The use of insulating materials that are both waterproof and breathable improves the long-term stability of the cable in a humid environment. The expanded polytetrafluoroethylene material enables continuous internal and external gas exchange, allowing the heat generated by the cable conductor when heated for a long time to be dissipated in time, effectively improving the high temperature and high humidity environment inside the conductor, and further improving the service life of the cable under harsh environmental conditions;

[0017] (3) Based on the actual working conditions of the off-road vehicle chassis, a targeted cable structure was proposed to improve the service life and environmental performance of the cable under high temperature and high humidity conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic cross-sectional view of the waterproof cable of the utility model.

[0019] In the figure: 1. middle core; 2. conductor; 3. insulation structure; 31. polytetrafluoroethylene film; 32. expanded polytetrafluoroethylene film; 4. sheath layer. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0021] like Figure 1 As shown, the utility model discloses an off-road vehicle chassis waterproof cable, comprising a middle core 1, a conductor structure 2, an insulation structure 3 and a sheath layer 4;

[0022] The intermediate core 1 is cylindrical and made of a high molecular weight moisture-absorbing and water-blocking material, which can provide a stable structure when the conductors are twisted and absorb moisture in time when the conductor surface is damp.

[0023] The conductor structure 2 surrounds and fits on the outside of the middle core, and is composed of 6 copper stranded wires; each copper stranded wire is composed of 7 groups of 7 / 0.08mm wires twisted in a regular 1+6 structure, with a twisted pitch ratio of 11-13 times. Each group of 7 / 0.08mm wires is twisted in a bundled structure at a pitch ratio of 12-15 times.

[0024] The surface of each copper stranded wire is coated with a 0.05mm-0.10mm thick fluororesin coating to ensure that the conductor can maintain good electrical conductivity and corrosion resistance in a humid environment.

[0025] The insulating structure 3 is coated on the outside of the conductor structure, including a polytetrafluoroethylene film 31 arranged in contact with the conductor structure 2 and an expanded polytetrafluoroethylene film (ePTFE) 32 on the outside thereof; the polytetrafluoroethylene film 31 is formed by sintering and cutting the polymer insulating material PTFE; wherein the polymer insulating material PTFE has excellent high and low temperature resistance, ensuring the stability of signal transmission under extreme conditions; the expanded polytetrafluoroethylene film (ePTFE) 32 has a special fibrous microporous structure, high mechanical properties, small pore size, and waterproof and breathable properties. The expanded polytetrafluoroethylene film is made of a polymer microporous waterproof film material formed by pushing, puffing and stretching, and has selective permeability, allowing gas molecules to pass through but preventing water molecules from invading, ensuring good exchange between the inside of the cable and the external environment while avoiding the entry of water molecules, thereby preventing the conductor from overheating and avoiding excessive heat during long-term use. The polytetrafluoroethylene film has a width of 15-20mm, a thickness of 0.05mm, and an overlap rate of 50%-55%.

[0026] The expanded polytetrafluoroethylene (ePTFE) has a width of 18-22 mm, a thickness of 0.035 mm, and an overlap rate of 66%-70%.

[0027] The sheath layer 4 is made of waterproof rubber material and wrapped around the outside of the insulation structure. The sheath layer has excellent water resistance and weather resistance. This structural design can effectively prevent moisture from invading the interior of the cable and ensure the electrical performance of the cable in a humid or underwater environment. The size of the sheath layer is 0.5-0.8mm.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An off-road vehicle chassis waterproof cable, comprising an intermediate core, a conductor structure, an insulation structure and a sheath layer; Features: The middle core is cylindrical and made of a high molecular moisture-absorbing and water-blocking material; the conductor structure is wrapped around and attached to the outside of the middle core, and is composed of 6 copper stranded wires; each copper stranded wire is composed of 7 groups of 7 / 0.08mm wires twisted in a regular 1+6 structure, with a twisted pitch ratio of 11-13 times; each group of 7 / 0.08mm wires is twisted in a bundled structure at a pitch ratio of 12-15 times; and a layer of fluororesin coating is also coated on the surface of each copper stranded wire; The insulating structure is coated on the outside of the conductor structure, including a polytetrafluoroethylene film arranged in contact with the conductor structure and an expanded polytetrafluoroethylene film on the outside thereof; The sheath layer is made of waterproof rubber material and is wrapped around the outside of the insulation structure.

2. The off-road vehicle chassis waterproof cable according to claim 1, characterized in that: The thickness of the fluororesin coating is 0.05 mm-0.10 mm.

3. The off-road vehicle chassis waterproof cable according to claim 1, characterized in that: The polytetrafluoroethylene film has a width of 15-20 mm, a thickness of 0.05 mm, and an overlap rate of 50%-55%.

4. The off-road vehicle chassis waterproof cable according to claim 1, characterized in that: The expanded polytetrafluoroethylene has a width of 18-22 mm, a thickness of 0.035 mm, and an overlap rate of 66%-70%.

5. The off-road vehicle chassis waterproof cable according to claim 1, characterized in that: The size of the sheath layer is 0.5mm-0.8mm.

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