High-temperature-resistant superfine composite metal stranded environment-friendly high-strength electric wire for automobile instrument

Abstract

The utility model discloses a high-temperature-resistant superfine composite metal stranded environment-friendly high-strength electric wire for an automobile instrument, which comprises an electric wire main body, and the electric wire main body comprises an outer protective layer, an inner protective layer arranged in the outer protective layer, and a conductor layer arranged in the inner protective layer. The outer protection layer comprises a magnesium chloride coating arranged on the outer surface of the electric wire and polyimide connected in the magnesium chloride coating, and the inner protection layer comprises glass fibers fixedly connected in the polyimide, nylon fibers distributed in the glass fibers in a staggered mode and silicone rubber arranged in the nylon fibers. The conductor layer comprises polyvinyl chloride fixedly connected in the silicone rubber and a copper wire arranged in the polyvinyl chloride. According to the utility model, the problems that the wire is used in a specific low-current area in an automobile body and an instrument desk, but a wire core in the conventional wire for the automobile instrument is made of copper wires, but the production cost of the wire is high and resources are wasted due to the high price of the copper wires are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wires, in particular to a high-temperature resistant ultra-fine composite metal twisted environmentally friendly high-strength electric wire for automobile instruments. Background Art

[0002] In the car body instrument, a common wire is called instrument harness. The instrument harness is the electrical system component inside the vehicle dashboard. The instrument harness plays an important role in transmitting data, power supply and control, and fault diagnosis in the car body instrument system. It connects various instruments and electrical components to ensure that the driver can easily understand the status and performance of the vehicle.

[0003] However, it still has the following disadvantages in actual use:

[0004] This wire is used in specific low-current areas in the car body and dashboard, but the cores of existing automotive instrument wires are all made of copper wires. However, due to the high price of copper, the production cost of the wires is high, which leads to a waste of resources.

[0005] Therefore, a new high-temperature resistant ultra-fine composite metal twisted environmentally friendly high-strength wire for automotive instruments is proposed to solve the above problems. Utility Model Content

[0006] Technical issues to be solved

[0007] The purpose of the utility model is to provide a high-temperature resistant ultra-fine composite metal twisted environmentally friendly high-strength electric wire for automobile instruments, so as to solve the problem proposed in the above background technology that the electric wire is used in specific low-current areas in the automobile body and instrument panel, but the wire core inside the existing automobile instrument wire is composed of copper wire, but due to the high price of copper, the production cost of the wire is high, which will lead to a waste of resources.

[0008] Technical Solution

[0009] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0010] The utility model is a high temperature resistant ultra-fine composite metal twisted environmentally friendly high strength electric wire for automobile instruments, comprising:

[0011] The wire body comprises an outer sheath, an inner sheath arranged inside the outer sheath, and a conductor layer arranged inside the inner sheath.

[0012] The outer sheath comprises a magnesium chloride coating arranged on the outer surface of the electric wire and polyimide connected to the inside of the magnesium chloride coating.

[0013] Furthermore, the inner protective layer includes glass fibers fixedly connected to the inside of the polyimide, nylon fibers staggeredly distributed inside the glass fibers, and silicone rubber arranged inside the nylon fibers.

[0014] Furthermore, the conductor layer includes polyvinyl chloride fixedly connected to the inside of the silicone rubber, copper wire arranged inside the polyvinyl chloride, and steel wire arranged in the center of the polyvinyl chloride.

[0015] Furthermore, the central position of the electric wire is a steel wire, the outer steel wires and copper wires of the central steel wire are arranged at intervals, and the three outer steel wires and three copper wires are twisted together, and the twisting direction is left.

[0016] Furthermore, the copper wire is a tinned soft round copper wire with a purity of more than 99.99%, the steel wire is high-strength carbon steel, the cross-sectional area of ​​a single copper wire is 0.158 square millimeters, and the cross-sectional area of ​​a single steel wire is 0.158 square millimeters.

[0017] Furthermore, the four steel wires and the three copper wires form a wire core of the electric wire, the wire core concentricity is greater than or equal to 90%, and the polyvinyl chloride insulation is produced by thin-wall extrusion.

[0018] Beneficial Effects

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1. The utility model adopts polyvinyl chloride, copper wire and steel wire, all of which are environmentally friendly materials. The product is environmentally friendly and has no harmful effects on the environment and people. The conductor is made of a composite twisted copper and steel. While meeting the current passability requirements, it can not only ensure the overall columnar force of the wire, but also reduce the cost by 70%. At the same time, the conductor structure still adopts a regular twisted structure, and the conductor stability is excellent.

[0021] 2. Based on beneficial effect 1, by setting polyimide, magnesium chloride coating, glass fiber, nylon fiber and silicone rubber, a variety of materials are set on the outside of the wire, so that the wire has excellent heat resistance and cold resistance, also has excellent mechanical strength and solvent resistance, and increases the strength and wear resistance of the wire, while at the same time can improve the high temperature resistance of the wire.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic diagram of the electric wire of the utility model;

[0025] Figure 2 This is a cross-sectional view of the electric wire of the utility model.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Outer sheath; 11. Polyimide; 12. Magnesium chloride coating;

[0028] 2. Inner protective layer; 21. Glass fiber; 22. Nylon fiber; 23. Silicone rubber;

[0029] 3. Conductor layer; 31. Polyvinyl chloride; 32. Copper wire; 33. Steel wire. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0032] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0033] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Example 1

[0035] See also Figure 1-Figure 2 As shown, this embodiment is a high temperature resistant ultra-fine composite metal twisted environmentally friendly high strength wire for automobile instruments, comprising:

[0036] The wire body includes an outer sheath 1, an inner sheath 2 arranged inside the outer sheath 1, and a conductor layer 3 arranged inside the inner sheath 2.

[0037] The outer sheath 1 includes a magnesium chloride coating 12 disposed on the outer surface of the wire and a polyimide 11 connected to the inside of the magnesium chloride coating 12;

[0038] The magnesium chloride coating 12 has high heat resistance. Applying the magnesium chloride coating 12 can improve the high temperature resistance of the wire, which allows the wire to operate in a high temperature environment without causing the melting or failure of the insulating material. The polyimide 11 has excellent heat resistance, chemical resistance and electrical properties. They can operate for a long time at extremely high temperatures and have excellent mechanical strength and solvent resistance.

[0039] The inner protective layer 2 includes glass fibers 21 fixedly connected to the inside of the polyimide 11, nylon fibers 22 staggeredly distributed inside the glass fibers 21, and silicone rubber 23 arranged inside the nylon fibers 22;

[0040] The glass fiber 21 surrounds the polyimide 11, and the nylon fiber 22 is interlaced inside the glass fiber 21. The glass fiber 21 and the nylon fiber 22 are woven inside the wire, which can provide a certain degree of tensile and compressive resistance, and protect the wire from external physical damage.

[0041] The center of the wire is a steel wire 33, and the outer steel wires 33 and the copper wires 32 of the center steel wire 33 are arranged alternately, and the three outer steel wires 33 and the three copper wires 32 are twisted with each other, and the twisting direction is left;

[0042] The conductor single wire is twisted in layers, and the number of conductors is three copper wires 32 plus four steel wires 33. The conductor has a regular twisted structure of one steel wire 33 plus three steel wires 33 plus three copper wires 32. The outer copper wires 32 and steel wires 33 are arranged alternately, and the twisting direction is left-handed, so as to ensure that the conductor has a stable structure when bent, and the columnar force remains unchanged when the cross-section is reduced;

[0043] The center of the wire is a steel wire 33, and the outer steel wires 33 and the copper wires 32 of the center steel wire 33 are arranged alternately, and the three outer steel wires 33 and the three copper wires 32 are twisted with each other, and the twisting direction is left;

[0044] An insulating layer is uniformly extruded outside the conductor. The insulation adopts new polyvinyl chloride 31 material. The temperature range is: -40~+105℃. The thinnest point of the insulation is not less than 80% of the nominal thickness of the insulation.

[0045] Working principle:

[0046] The conductor is a composite stranded conductor composed of three copper wires 32 and four steel wires 33. The conductor has a 1+6 regular stranded structure, and an insulating layer is uniformly extruded outside the conductor. The insulation adopts a new polyvinyl chloride 31 material and is produced by thin-wall extrusion. The new polyvinyl chloride 31 material adopts a new plasticizer to reduce the processing temperature during the extrusion process, so that the small molecules produced by degradation under the original high temperature can maintain their original properties at a lower temperature, thereby reducing the atomization result of this material.

[0047] In addition, the glass fiber 21 surrounds the polyimide 11, and the nylon fiber 22 is interlaced inside the glass fiber 21. The glass fiber 21 and the nylon fiber 22 are woven inside the wire, which can provide a certain degree of tensile and compressive resistance, and protect the wire from external physical damage.

[0048] At the same time, the magnesium chloride coating 12 has high heat resistance. Applying the magnesium chloride coating 12 can improve the high temperature resistance of the wire, which allows the wire to operate in a high temperature environment without causing the melting or failure of the insulating material. The polyimide 11 has excellent heat resistance, chemical resistance and electrical properties. They can operate for a long time at extremely high temperatures and have excellent mechanical strength and solvent resistance.

[0049] All materials of this structure are environmentally friendly materials. The product is environmentally friendly and has no harmful effects on the environment and people. The conductor is made of a composite twisted copper and steel. While meeting the current passability requirements, it can not only ensure the overall columnar force of the wire, but also reduce the cost by 70%. At the same time, the conductor structure still adopts a regular twisted structure, the conductor stability is excellent, and the wire has excellent heat resistance and cold resistance, as well as excellent mechanical strength and solvent resistance, and increases the strength and wear resistance of the wire, while improving the high temperature resistance of the wire.

[0050] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high temperature resistant ultra-fine composite metal twisted environmentally friendly high strength wire for automobile instruments, characterized in that: include: An electric wire body, the electric wire body comprising an outer sheath (1), an inner sheath (2) arranged inside the outer sheath (1), and a conductor layer (3) arranged inside the inner sheath (2). The outer protective layer (1) comprises a magnesium chloride coating (12) arranged on the outer surface of the electric wire and a polyimide (11) connected to the inside of the magnesium chloride coating (12).

2. The high temperature resistant ultra-fine composite metal stranded environmentally friendly high strength wire for automobile instrument according to claim 1, characterized in that: The inner protective layer (2) comprises glass fibers (21) fixedly connected to the inside of the polyimide (11), nylon fibers (22) staggeredly distributed inside the glass fibers (21), and silicone rubber (23) arranged inside the nylon fibers (22).

3. The high temperature resistant ultra-fine composite metal twisted environmentally friendly high strength wire for automobile instrument according to claim 1, characterized in that: The conductor layer (3) comprises polyvinyl chloride (31) fixedly connected to the inside of the silicone rubber (23), a copper wire (32) arranged inside the polyvinyl chloride (31), and a steel wire (33) arranged at the center of the polyvinyl chloride (31).

4. The high temperature resistant ultra-fine composite metal stranded environmentally friendly high strength wire for automobile instrument according to claim 3, characterized in that: The center of the electric wire is a steel wire (33), the outer steel wires (33) and the copper wires (32) of the center steel wire (33) are arranged at intervals, and the three outer steel wires (33) and the three copper wires (32) are twisted together, and the twisting direction is left.

5. The high temperature resistant ultra-fine composite metal stranded environmentally friendly high strength electric wire for automobile instrument according to claim 3, characterized in that: The copper wire (32) is a tinned soft round copper wire with a purity of more than 99.99%, and the steel wire (33) is high-strength carbon steel. The cross-sectional area of ​​a single copper wire (32) is 0.158 square millimeters, and the cross-sectional area of ​​a single steel wire (33) is 0.158 square millimeters.

6. The high temperature resistant ultra-fine composite metal twisted environmentally friendly high strength electric wire for automobile instrument according to claim 3, characterized in that: Four steel wires (33) and three copper wires (32) form the wire core of the electric wire, the concentricity of the wire core is greater than or equal to 90%, and the insulation of polyvinyl chloride (31) is produced by thin-wall extrusion.

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