Torsion-resistant anti-fatigue automobile wire

Abstract

The utility model discloses a torsion-resistant anti-fatigue automobile wire in the technical field of automobile wires, which comprises a core wire, the core wire comprises a plurality of layers of stranded conductors, the outermost layer of each stranded conductor is coated with an isolation belt, the outer surface of each isolation belt is coated with a first insulating layer, the first insulating layer is coated with a second insulating layer, and the second insulating layer is coated with a third insulating layer. A supporting layer is also arranged between the first insulating layer and the second insulating layer; the automobile wire is high in torsion resistance and fatigue resistance, has good bendability and flexibility, keeps certain strength and rigidity, is good in safety performance, and is suitable for being used in circuit layout in an automobile.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive electric wires, in particular to a torsion-resistant and fatigue-resistant automotive electric wire. Background Art

[0002] Automotive wires are an important part of the automotive electrical system, responsible for transmitting electrical energy, driving various electrical devices and transmitting control signals. With the development of automotive technology, there are more and more electrical devices, and the complexity of the electrical system is also increasing, so automotive wires need to have higher performance.

[0003] Traditional automotive wires are prone to wear and tear due to the material characteristics of the conductor and insulation layer during frequent twisting and bending, leading to wire failure. In addition, long-term use and environmental factors can also cause fatigue and fracture of wires, affecting the normal operation of the car. Utility Model Content

[0004] The utility model aims to overcome the defects in the prior art, provide a torsion-resistant and fatigue-resistant automobile wire, improve the torsion-resistant and anti-fracture performance of the wire, and increase the service life of the wire.

[0005] The purpose of the utility model is achieved as follows: a torsion-resistant and fatigue-resistant automotive wire comprises a core wire, the core wire comprises a multi-layer twisted conductor, an isolation tape is coated on the outermost layer of the twisted conductor, the outer surface of the isolation tape is coated with a first insulating layer, the outer surface of the first insulating layer is wrapped with a second insulating layer, and a support layer is further provided between the first insulating layer and the second insulating layer.

[0006] Furthermore, the multi-layer twisted conductor is made of tinned copper wires twisted in a 1-6-12-18 pattern, and each layer is left-twisted.

[0007] Furthermore, the isolation tape is made of a high temperature resistant reinforced non-woven fabric material, the inner surface of the isolation tape is closely attached to the outermost layer of the multi-layer twisted conductor, and the thickness of the isolation tape is 0.05 mm.

[0008] Furthermore, the first insulating layer is a silicone rubber insulating layer, and the second insulating layer is a polyvinyl chloride insulating layer.

[0009] Furthermore, a support belt is provided in the support layer, and a plurality of the support belts are provided in a circular array at equal intervals in the support layer. The support belt is woven from carbon fiber twill, has a circular cross-section, and has a diameter of 0.05-1 mm.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] First, the conductors are twisted in the form of 1-6-12-18, with each layer twisted to the left. The conductors are twisted in the same direction to improve the roundness of the wire surface, reduce friction loss, reduce the DC resistance and copper consumption of the conductor, and improve the conductor's conductivity.

[0012] Second, a support belt is provided between the first insulating layer and the second insulating layer, so that the wire can effectively disperse stress when twisted and bent, reduce local stress concentration, extend the service life of the wire, and quickly restore the wire to its original shape after being squeezed and deformed by external force, reduce fatigue damage, and improve the reliability and safety of the wire.

[0013] Third, the electric wire of the utility model has a simple structure, is made of readily available materials, and has a low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of the automobile electric wire of the utility model.

[0015] In the above figure, 1 is the conductor, 2 is the isolation tape, 3 is the first insulating layer, 4 is the support tape, and 5 is the second insulating layer. DETAILED DESCRIPTION

[0016] like Figure 1 The torsion-resistant and fatigue-resistant automotive wire shown in the figure includes a core wire, which includes a multi-layer twisted conductor 1. The outermost layer of the twisted conductor 1 is coated with an isolation tape 2. The outer surface of the isolation tape 2 is coated with a first insulating layer 3. The outside of the first insulating layer 3 is wrapped with a second insulating layer 5. A supporting layer is also provided between the first insulating layer 3 and the second insulating layer 5.

[0017] The multi-layer stranded conductor 1 is made of tinned copper wires twisted in the form of 1-6-12-18, and each layer is twisted in the left direction; the conductor 1 is twisted in the same direction, which not only takes into account the requirements of flexibility and tensile strength, but also ensures the stability of the wire operation.

[0018] The isolation tape 2 is made of high-temperature resistant reinforced non-woven fabric. The inner surface of the isolation tape 2 is tightly attached to the outermost layer of the multi-layer twisted conductor 1. The thickness of the isolation tape 2 is 0.05 mm. The isolation tape 2 is used to homogenize the electric field generated by the conductor 1 inside the wire, and can prevent the conductor 1 from breaking, thereby reducing line losses.

[0019] The first insulating layer 3 is a silicone rubber insulating layer, and the second insulating layer 5 is a polyvinyl chloride insulating layer; the silicone rubber has excellent insulating properties, which can effectively prevent current leakage and electric shock hazards, and has high insulation strength. It can also provide reliable insulation protection in high voltage environments, and has a wide temperature adaptability range. It has high heat resistance and cold resistance. It can maintain good mechanical properties and electrical insulation properties in low temperature environments, and improve the fatigue resistance of wires. Silicone rubber also has excellent elasticity and flexibility, and can adapt to multiple torsion usage environments; the polyvinyl chloride insulation layer can ensure that the wire has high mechanical strength while taking into account flame retardancy, salt spray resistance, mildew resistance, and avoid cracking; the double insulation layer is set to enhance the overall strength and durability of the wire and protect the internal conductor from the influence of the external environment.

[0020] A support belt 4 is provided in the support layer. A plurality of support belts 4 are provided in the support layer in a circular array at equal intervals. The support belt 4 is formed by carbon fiber twill weaving. The cross-section of the support belt 4 is circular, and the diameter of the support belt 4 is 0.05~1mm. The support belt 4 provides additional torsional and bending stiffness for the overall structure of the wire, disperses the force, reduces local stress concentration, and improves the service life of the wire. The carbon fiber twill weave is that the carbon fiber weft and the carbon fiber warp are obliquely crossed according to a certain rule to form a twill texture, which has good bendability and flexibility, while also maintaining a certain strength and rigidity, thereby improving the safety of the wire.

[0021] When the utility model is working, the conductor 1 made of tinned copper wire is twisted in four layers according to the arrangement of "1-6-12-18", each layer is twisted in the left direction, a conductor is arranged at the center, 6 conductors are twisted in the left direction around its periphery, 12 conductors are twisted in the left direction on the periphery of the 6 conductors, and 18 conductors are twisted in the left direction on the periphery of the 12 conductors. The conductors 1 of each layer are in close contact with each other, and then an isolation tape 2 made of non-woven fabric is wrapped around the periphery of the twisted conductor 1 to equalize the electric field, avoid cable core breakage, and reduce line loss; the first insulating layer 3 and the second insulating layer 5 are coated on the outside of the isolation tape 4 to protect the wires from the influence of the external environment and increase the overall strength and durability of the wires. In order to improve the torsion resistance and fatigue resistance of the wire, the device sets a support layer between the first insulating layer 3 and the second insulating layer 5. A plurality of support belts 4 made of carbon fiber twill weave are arranged in a circular array at equal intervals in the support layer. The support belts 4 provide additional torsion and bending stiffness for the overall structure of the wire, disperse the force, reduce local stress concentration, and improve the service life of the wire. The carbon fiber twill weave is that the carbon fiber weft and the carbon fiber warp are obliquely crossed according to a certain rule to form a twill texture, which has good bendability and flexibility, while also maintaining a certain strength and rigidity, improving the safety of the wire. The automobile wire of the utility model has a simple structure, is easy to obtain manufacturing materials, has a low manufacturing cost, and is suitable for use in the wiring of the internal automobile.

[0022] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A torsion-resistant and fatigue-resistant automotive wire, comprising a core wire, characterized in that: The core wire includes a multi-layer twisted conductor, the outermost layer of the twisted conductor is coated with an isolation tape, the outer surface of the isolation tape is coated with a first insulating layer, the outside of the first insulating layer is wrapped with a second insulating layer, and a support layer is provided between the first insulating layer and the second insulating layer; the isolation tape is made of a high-temperature resistant reinforced non-woven fabric material, the inner surface of the isolation tape is tightly attached to the outermost layer of the multi-layer twisted conductor, and the thickness of the isolation tape is 0.05mm; a support tape is provided in the support layer, and a plurality of support tapes are provided in a circular array at equal intervals in the support layer, and the support tape is woven from carbon fiber twill.

2. The torsion-resistant and fatigue-resistant automotive wire according to claim 1, characterized in that: The multi-layer stranded conductor is made of tinned copper wires twisted in a 1-6-12-18 pattern, and each layer is left-twisted.

3. The torsion-resistant and fatigue-resistant automotive wire according to claim 1, characterized in that: The first insulating layer is a silicone rubber insulating layer, and the second insulating layer is a polyvinyl chloride insulating layer.

4. The torsion-resistant and fatigue-resistant automotive wire according to claim 1, characterized in that: The cross section of the support belt is circular, and the diameter of the support belt is 0.05-1 mm.

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