Automobile wire capable of avoiding adhesion of insulated wire cores

Abstract

The utility model provides an automobile wire capable of avoiding insulation wire core adhesion, comprising a cabling wire core, a shielding layer and a sheath layer, the cabling wire core comprises two insulation wire cores and a tinned conductor which are twisted, the twisting pitch is 45mm, each insulation wire core comprises a conductor and an insulation layer wrapping the conductor; the shielding layer is made of foamed plastic, the inner surface of the foamed plastic is coated with an aluminum foil layer, the thickness of the shielding layer is 0.15 mm, and the shielding layer wraps the outer surface of the cabling wire core; the sheath layer wraps the outer surface of the shielding layer. The automobile wire capable of preventing the insulated wire cores from being adhered can play roles in shielding, heat insulation and extrusion pressure buffering at the same time, can reduce the heat influence of the sheath on the insulated wire cores in the sheath extrusion process, can reduce the rejection rate, can reduce the labor cost and the material cost, and can improve the production efficiency.

Description

Technical Field

[0001] The utility model relates to the field of automobile electric wires, in particular to an automobile electric wire which can prevent the insulation core from sticking. Background Art

[0002] The shielding layer of current metal foil shielded wires is generally composed of aluminum foil + PET film, with a thickness of about 0.03mm. During the production process, due to the high temperature of the extruder head in the sheath extrusion process, some even reach 180°C. During this process, the high-temperature sheath will be close to the shielding layer, and the shielding layer will be quickly heated, and the thermal insulation effect can be ignored). For the insulated wire cores after twisting with an insulation temperature resistance of 100°C or below, the insulation skin will be softened by the high temperature during the process of passing through the head and being wrapped by the sheath layer. In addition, the wire cores are close to each other after twisting, and the pressure of the sheath material extrusion causes the insulation cores to adhere to each other. When the wires are connected to the terminals, it affects the customer to peel off the insulation skin. In severe cases, the insulation skin thickness may be insufficient, resulting in high voltage breakdown and a large amount of waste. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an automotive wire that can avoid the adhesion of the insulating core, which can simultaneously play the role of shielding, heat insulation, and buffering extrusion pressure, and can reduce the thermal effect of the sheath on the insulating core during the sheath extrusion process, thereby reducing the scrap rate, reducing labor costs and material costs, and improving production efficiency.

[0004] The utility model is implemented as follows: an automobile electric wire for preventing the insulating wire core from sticking, comprising

[0005] The cable core comprises two insulated wire cores and a tinned conductor twisted together, the twisting pitch is 45 mm, and each of the insulated wire cores comprises a conductor and an insulating layer wrapped outside the conductor;

[0006] The shielding layer is made of foamed plastic, the inner surface of the foamed plastic is coated with an aluminum foil layer, the shielding layer has a thickness of 0.15 mm, and is wrapped around the outer surface of the cable core;

[0007] The sheath layer is wrapped around the outer surface of the shielding layer.

[0008] Furthermore, the coating thickness of the aluminum foil layer is 0.02 mm.

[0009] Furthermore, the insulation layer of the insulating core is made of PVC material with a temperature resistance level of -40°C to 80°C.

[0010] Furthermore, the thinnest thickness of the sheath layer is 0.32 mm, and it is made of PVC material with a temperature resistance level of -40°C to 105°C.

[0011] Furthermore, the diameter of the insulated core is 1.62 mm, the diameter of the tinned conductor is 0.98 mm, and the diameter of the sheath layer is 4.2 mm.

[0012] The utility model has the advantages that a shielding layer is arranged on the outer surface of the cable core, and the shielding layer is obtained by coating an aluminum foil layer on the inner surface of the foamed plastic, and the thickness is 0.15mm. During the sheath extrusion process, the shielding layer can simultaneously play the role of shielding, heat insulation and buffering the extrusion pressure, thereby reducing the thermal influence of the sheath layer on the insulated core. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0014] Figure 1 The utility model is a structural schematic diagram of an automobile electric wire for preventing the insulating wire core from sticking.

[0015] Description of the accompanying drawings: cable core 1, insulated core 11, conductor 111, insulating layer 112, tinned conductor 12, shielding layer 2, foamed plastic 21, aluminum foil layer 22, sheath layer 3. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] The technical problem to be solved by the utility model is that during the sheath extrusion process of the electric wire, the temperature of the machine head is relatively high, and the insulating layer of the insulating core thereof will be softened by the high temperature. In addition, the insulating cores are tightly attached to each other after being twisted, and the pressure of the sheath material extrusion causes the insulating cores to adhere to each other. In severe cases, the thickness of the insulation skin may be insufficient, resulting in high voltage breakdown and a large amount of waste.

[0018] The overall idea of ​​solving the technical problem of the utility model is: a shielding layer is arranged on the outer surface of the cable core, and the shielding layer is composed of foamed plastic and an aluminum foil layer, and the thickness is 0.15mm. The aluminum foil layer has a shielding effect, and the heat insulation effect is increased by increasing the thickness. The foamed plastic has a buffering pressure effect during the extrusion process. It can play the role of shielding, heat insulation and buffering extrusion pressure during the sheath extrusion process, thereby reducing the thermal influence of the sheath layer on the insulating core.

[0019] like Figure 1 As shown, an automotive electric wire for preventing the insulating wire core from sticking together comprises a cable core 1, a shielding layer 2 and a sheath layer 3;

[0020] The cable core 1 is composed of two insulated cores 11 and a tinned conductor 12 twisted together, with a twisting pitch of 45 mm. Each of the insulated cores 11 includes a conductor 111 and an insulating layer 112 wrapped around the conductor 111; the insulating layer 112 is made of PVC material with a temperature resistance grade of -40°C to 80°C, the diameter of the insulated core 11 is 1.62 mm, the diameter of the tinned conductor 12 is 0.98 mm, and the tinned conductor is a tinned copper stranded wire.

[0021] The shielding layer 2 is wrapped around the outer surface of the cable core 1 and is made of foamed plastic 21. The inner surface of the foamed plastic 21 is coated with an aluminum foil layer 22. The thickness of the shielding layer 2 is 0.15 mm, and the coating thickness of the aluminum foil layer 22 is 0.02 mm.

[0022] The sheath layer 3 is wrapped around the outer surface of the shielding layer 2. The thinnest thickness of the sheath layer 3 is 0.32 mm, and the diameter is 4.2 mm. The sheath layer 3 is made of PVC material with a temperature resistance level of -40°C to 105°C.

[0023] The utility model arranges a shielding layer 2 on the outer surface of the cable core 1. The shielding layer 2 is obtained by coating an aluminum foil layer 22 on the inner surface of a foamed plastic 21, and the thickness is 0.15 mm. During the sheath extrusion process, the shielding layer 2 can simultaneously play the role of shielding, heat insulation and buffering the extrusion pressure, thereby reducing the thermal effect of the sheath layer on the insulated core, reducing the scrap rate, reducing labor costs and material costs, and improving production efficiency.

[0024] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. An automotive electric wire for preventing insulated wire cores from sticking together, characterized in that: include The cable core comprises two insulated wire cores and a tinned conductor twisted together, the twisting pitch is 45 mm, and each of the insulated wire cores comprises a conductor and an insulating layer wrapped outside the conductor; The shielding layer is made of foamed plastic, the inner surface of the foamed plastic is coated with an aluminum foil layer, the shielding layer has a thickness of 0.15 mm, and is wrapped around the outer surface of the cable core; The sheath layer is wrapped around the outer surface of the shielding layer.

2. The automotive electric wire for preventing insulation cores from sticking according to claim 1, characterized in that: The coating thickness of the aluminum foil layer is 0.02 mm.

3. The automotive electric wire for preventing insulation cores from sticking according to claim 1, characterized in that: The insulating layer of the insulating core is made of PVC material with a temperature resistance level of -40°C to 80°C.

4. The automotive electric wire for preventing insulation cores from sticking according to claim 1, characterized in that: The thinnest thickness of the sheath layer is 0.32 mm, and it is made of PVC material with a temperature resistance level of -40°C to 105°C.

5. The automotive electric wire for preventing insulation cores from sticking according to claim 1, characterized in that: The diameter of the insulated wire core is 1.62 mm, the diameter of the tinned conductor is 0.98 mm, and the diameter of the sheath layer is 4.2 mm.

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