Anti-puncture shielding wire

Abstract

The utility model relates to the field of electric wires, in particular to an anti-puncture shielding electric wire. Comprising a conductor, an insulating layer, an anti-puncture layer, a metal braid layer and a sheath layer, the conductor, the insulating layer and the anti-puncture layer are sequentially lapped from inside to outside to form an insulating wire core, at least one insulating wire core is coated with the metal braid layer, and the metal braid layer is lapped with the sheath layer; the thickness of the anti-puncture layer ranges from 0.02 mm to 0.2 mm. According to the utility model, the anti-puncture layer structure is additionally arranged, the anti-puncture layer is made of a material with hardness higher than that of the insulating layer, and synchronous extrusion and tight adhesion are realized, so that the surface strength of the insulating layer can be improved, the risk of short circuit caused by puncturing the insulating layer by metal wires is effectively improved, the driving safety is guaranteed, and the service life of the product is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of electric wires, in particular to a puncture-proof shielded electric wire. Background Art

[0002] At present, with the rapid development of various industries, the application of wires is becoming more and more extensive, and at the same time, higher requirements are put forward for the performance of wires in all aspects. The current low-voltage shielded automotive wires are mainly composed of conductors, insulation layers, metal braided layers, and sheath layers. The braided layer directly contacts the insulation layer. When the wire harness is processed or the vehicle is vibrated, the metal wires in the braided layer will be broken. When the broken wires are vibrated, bent, etc., there is a chance that they will pierce the insulation skin, causing a short circuit, affecting the vehicle function and driving safety. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a puncture-proof shielded electric wire to reduce the risk of puncture.

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

[0005] A puncture-proof shielded electric wire comprises a conductor, an insulating layer, an anti-puncture layer, a metal braided layer and a sheath layer. The conductor, the insulating layer and the anti-puncture layer are sequentially wrapped from the inside to the outside to form an insulating core, at least one insulating core is covered with the metal braided layer, and the sheath layer is wrapped outside the metal braided layer; the thickness of the anti-puncture layer is 0.02 mm-0.2 mm.

[0006] Furthermore, the puncture-proof layer is a PVC plastic layer.

[0007] Furthermore, the puncture-proof layer and the insulating layer are a double-layer co-extruded structure.

[0008] Furthermore, the conductor is a stranded conductor or a monofilament conductor.

[0009] Furthermore, the insulating wire cores are 1-6 cores.

[0010] Furthermore, the cross-sectional area of ​​the conductor is 0.22-1.0 mm 2 The thickness of the insulating layer is 0.05-1.0 mm, and the thickness of the sheath layer is 0.5 mm-2.0 mm.

[0011] The advantages of the utility model are: the utility model increases the puncture-proof layer structure; the puncture-proof layer is made of a material with higher hardness than the insulating layer; synchronous extrusion and tight adhesion can improve the surface strength of the insulating layer, effectively improve the short-circuit risk caused by the metal wire piercing the insulating layer, ensure driving safety, and increase the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] The numbers in the figure are: conductor 1, insulation layer 2, anti-puncture layer 3, metal braided layer 4, and sheath layer 5. DETAILED DESCRIPTION

[0015] In the description of the present invention, it should be understood that the description indicating the orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" 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.

[0017] The technical solution of the utility model is as follows:

[0018] See also Figure 1 As shown, the utility model is a puncture-proof shielded wire, comprising a conductor 1, an insulating layer 2, an anti-puncture layer 3, a metal braided layer 4, and a sheath layer 5. The conductor 1, the insulating layer 2, and the anti-puncture layer 3 are sequentially wrapped from the inside to the outside to form an insulating core, at least one of the insulating cores is coated with the metal braided layer 4, and the metal braided layer 4 is wrapped with the sheath layer 5; the thickness of the anti-puncture layer 3 is 0.02mm-0.2mm.

[0019] In a specific embodiment, the insulating layer 2 is made of polyvinyl chloride or silicone rubber, and the puncture-proof layer 3 is a PVC plastic layer. A puncture-proof layer 3 with a greater hardness is extruded outside the insulating layer 2 to reduce the risk of puncture.

[0020] In a specific embodiment, the puncture-proof layer 3 and the insulating layer 2 are double-layer co-extruded structures, using a core mold, an inner mold sleeve, and an outer mold sleeve, and the two layers are extruded simultaneously, so that the puncture-proof layer 3 and the insulating layer can be tightly adhered together to avoid delamination during the pulling process.

[0021] The specific production process (taking twisted copper wire as an example) is as follows:

[0022] (1) Conductor production: 8.0 copper rod is drawn into 1.6, 1.8 or 2.0mm copper wire on a large drawing machine, and then drawn into 0.15-0.40mm copper wire on a medium drawing machine, and then twisted on a wire bundling machine with a twisting pitch of 12mm-70mm.

[0023] (2) Insulated wire core production: After twisting, the insulation layer and the puncture-proof layer are extruded simultaneously on the extruder (the plastic insulation layer and the puncture-proof layer are wrapped on the conductor); the thickness of the insulation layer is 0.05-1.0 mm, and the thickness of the puncture-proof layer is 0.02-0.2 mm.

[0024] (3) After extrusion, the insulated wire core is twisted on a twisting machine with a twisting pitch of 12 mm to 70 mm.

[0025] (4) Production of metal braided layer: After the twisted wires are completed, the metal shielding layer is woven on a metal shielding braiding machine. The number of copper wires in the braided layer is 3-9, and the diameter of the copper wires is 0.05mm-0.20mm.

[0026] (5) Sheath production: After braiding is completed, the braided wire core is extruded on an extruder with a sheath thickness of 0.5mm-2.0mm.

[0027] 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. A puncture-proof shielded electric wire, characterized in that: It includes a conductor, an insulating layer, an anti-puncture layer, a metal braided layer, and a sheath layer. The conductor, the insulating layer, and the anti-puncture layer are sequentially wrapped from the inside to the outside to form an insulated wire core. At least one of the insulating wire cores is coated with the metal braided layer, and the sheath layer is wrapped outside the metal braided layer. The thickness of the anti-puncture layer is 0.02mm-0.2mm.

2. The puncture-proof shielded electric wire according to claim 1, characterized in that: The puncture-proof layer is a PVC plastic layer.

3. The puncture-proof shielded electric wire according to claim 1, characterized in that: The puncture-proof layer and the insulating layer are a double-layer co-extruded structure.

4. The puncture-resistant shielded electric wire according to claim 1, characterized in that: The conductor is a stranded conductor or a monofilament conductor.

5. The puncture-proof shielded electric wire according to claim 1, characterized in that: The insulated wire cores are 1-6 cores.

6. The puncture-resistant shielded electric wire according to claim 1, characterized in that: The cross-sectional area of ​​the conductor is 0.22-1.0 mm 2 The thickness of the insulating layer is 0.05-1.0 mm, and the thickness of the sheath layer is 0.5 mm-2.0 mm.

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