CN217444152U

CN217444152U - Anti-loose anti-bending thin-diameter coaxial cable

Info

Publication number: CN217444152U
Application number: CN202220295534.1U
Authority: CN
Inventors: 杨兆文; 王成旺; 宋斌; 蔡长威; 刘书鑫
Original assignee: Zhejiang Products Zhongda Cable Co ltd
Current assignee: Zhejiang Products Zhongda Cable Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-09-16
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses a thin footpath coaxial cable of locking anti bending that looses, including the inner conductor, cross-linking fluororubber porous insulator, compound area is moulded to copper winds the package shielding layer, the copper line winds package shielding layer and fluororesin restrictive coating, compound area is moulded to copper is taken the one-way spiral of compound area to take to cover around the package structure for copper around the package shielding layer, copper is moulded compound area including the copper foil layer in the outside and the inboard PET thin layer, the copper foil layer outside is provided with thermoplastic polyurethane interior adhesive linkage, the copper line is formed and spiral angle is 70 degrees to 85 degrees for the one-way spiral winding of a plurality of tinned copper wires around the package shielding layer, the copper line is provided with the outer adhesive linkage of thermoplastic polyurethane around package shielding layer outside, the external diameter of fluororesin restrictive coating is 0.85mm to 3.6 mm. The cable is manufactured based on small diameter and light weight, the bending resistance is better, the shielding layer is not easy to loosen, the noise shielding performance is stable, and the cable is durable in use.

Description

Anti-loose anti-bending thin-diameter coaxial cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a locking anti bending thin footpath coaxial cable that looses.

Background

Coaxial cables are one of the main varieties of wire cables. The coaxial cable needs to have good flexibility and shielding performance. Industrial applications field environments are complex and electromagnetic noise radiation or conduction (EMI) can significantly interfere with the proper operation of equipment, and in this process, an important class of carriers for electromagnetic noise propagation are the various cables used in production line equipment. For example, in an automated industrial manufacturing line, electrical connection and control of small robots, electronic machines, and the like are required to be applied to highly flexible coaxial cables, which must also have good electrical characteristics for long-distance transmission. However, after the ordinary coaxial cable is repeatedly bent, the copper wire shielding layer is easily loosened, so that the shielding density is reduced, and thus, the shielding effect is unstable, and the electrical characteristics are greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a thin footpath coaxial cable of locking anti bending that looses, based on the preparation of thin footpath lightweight, anti bending nature is better, and the shielding layer is difficult for appearing loosely, and noise shielding performance is stable, durable use.

The utility model discloses a make above-mentioned technical problem solve through following technical scheme.

The loose-proof bending-resistant thin-diameter coaxial cable comprises an inner conductor, a cross-linked fluororubber porous insulator, a copper-plastic composite tape wrapping shielding layer, a copper wire wrapping shielding layer and a fluororesin sheath layer, wherein the cross-linked fluororubber porous insulator, the copper-plastic composite tape wrapping shielding layer, the copper wire wrapping shielding layer and the fluororesin sheath layer are sequentially coated outside the inner conductor, a plurality of through holes are formed in a cross-linked fluororubber body, the thickness of the cross-linked fluororubber porous insulator is not less than 0.35mm, the copper-plastic composite tape wrapping shielding layer is of a copper-plastic composite tape one-way spiral lapping and wrapping structure, the copper-plastic composite tape comprises an outer copper foil layer and an inner PET (polyethylene terephthalate) film layer, a thermoplastic polyurethane inner bonding layer is arranged outside the copper foil layer, the copper wire wrapping shielding layer is formed by winding a plurality of tinned copper wires in a one-way in a spiral mode, the spiral angle of the copper wires is 70-plastic composite tape, the copper wire wrapping shielding layer is provided with a thermoplastic polyurethane outer bonding layer, the thermoplastic polyurethane inner bonding layer and the thermoplastic polyurethane bonding layer are both 1 mu m to 3 mu m in thickness m, the outer diameter of the fluororesin sheath layer is 0.85mm to 3.6 mm.

Preferably, the inner conductor is formed by stranding a plurality of tinned copper monofilaments, and the wire diameter of each tinned copper monofilament is 0.04mm to 0.12 mm.

Preferably, the outer diameter of the inner conductor is not more than 1.8 mm.

Preferably, the inner conductor lay length is 4 to 10 times the outer diameter of the inner conductor.

Preferably, the thickness of the copper foil layer is 6 μm to 8 μm.

Preferably, the thickness of the PET film layer is not less than 10 times of the thickness of the copper foil layer.

Preferably, the thickness of the crosslinked fluororubber porous insulator is not more than 1.5 mm.

Preferably, the cross-linked fluororubber porous insulator has a porosity of 20% to 40%.

Preferably, the fluororesin sheath layer has a thickness of 0.1mm to 1.6 mm.

Preferably, the fluororesin sheath layer is a PFA, FEP or PTFE sheath layer.

The utility model has the advantages that:

1. the outer cladding crosslinked fluororubber porous insulator of inner conductor can bear the lateral pressure when crooked, improves the pliability and the bending resistance of cable, through forming a plurality of through-holes on the crosslinked fluororubber body, on the basis of keeping electric insulation clearance distance, the cable insulation material weight that has significantly reduced helps realizing the light weight preparation of cable, reduces use cost.

2. Through copper-plastic composite tape around package shielding layer, the copper line forms shielding conductor around package shielding layer jointly, the copper foil layer can effectually fill the copper line and weave the space that forms around package shielding layer, effectual reduction signal attenuation, reinforcing shielding performance, improve anti-interference performance, through set up the interior adhesive linkage of thermoplastic polyurethane in the copper foil layer outside, make copper foil layer and copper line be connected around package shielding layer driving fit, and the copper line sets up the outer adhesive linkage of thermoplastic polyurethane around package shielding layer outside, the copper line bonds with fluororesin restrictive coating around package shielding layer as an organic wholely, effectually prevent that the copper line from easily taking place loose problem around package shielding layer tinning copper wire after suffering the repeatability bending, help improving the pliability and the bending resistance characteristic of cable, guarantee noise shielding's stability, durable use is better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.

Reference numerals: 1-inner conductor, 2-cross-linked fluororubber porous insulator, 3-copper plastic composite tape lapping shielding layer, 4-copper wire lapping shielding layer, 5-fluororesin sheath layer and 6-through hole.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the utility model discloses locking anti bending thin footpath coaxial cable that looses, including inner conductor 1 and the cladding in proper order the compound area is moulded to cross-linking fluororubber porous insulator 2, copper of inner conductor 1 outside around package shielding layer 3, copper line around package shielding layer 4 and fluororesin restrictive coating 5. Specifically, the inner conductor 1 is formed by stranding a plurality of tinned copper monofilaments, the wire diameter of each tinned copper monofilament is 0.04mm to 0.12mm, and further, the lay length of the inner conductor 1 is 4 to 10 times of the outer diameter of the inner conductor 1. The outer diameter of the inner conductor 1 is not more than 1.8 mm.

The cross-linked fluorine rubber porous insulator 2 is formed with a plurality of through holes 6 on the cross-linked fluorine rubber body, and further, the porosity of the cross-linked fluorine rubber porous insulator 2 is 20% to 40%. The thickness of the cross-linked fluorine rubber porous insulator 2 is not less than 0.35mm, and further, the thickness of the cross-linked fluorine rubber porous insulator 2 is not more than 1.5 mm. The copper-plastic composite tape lapping and shielding layer 3 is of a copper-plastic composite tape one-way spiral lapping and covering lapping structure, the copper-plastic composite tape comprises an outer copper foil layer and an inner PET (polyethylene terephthalate) film layer, specifically, the thickness of the copper foil layer is 6-8 mu m, and the thickness of the PET film layer is not less than 10 times of that of the copper foil layer. And a thermoplastic polyurethane inner bonding layer is arranged outside the copper foil layer. The copper wire is formed by winding a plurality of tinned copper wires in a unidirectional spiral mode, and the spiral angle is 70-85 degrees. And a thermoplastic polyurethane outer bonding layer is arranged outside the copper wire wrapping shielding layer 4. The thickness of the thermoplastic polyurethane inner bonding layer and the thickness of the thermoplastic polyurethane outer bonding layer are both 1-3 mu m. The outer diameter of the fluororesin sheath layer 5 is 0.85mm to 3.6 mm. The fluororesin sheathing layer 5 is, for example, a PFA, FEP or PTFE sheathing layer, and the thickness of the fluororesin sheathing layer 5 is 0.1mm to 1.6 mm.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. Prevent loose anti crooked thin footpath coaxial cable, characterized by: the copper-plastic composite tape winding and shielding layer comprises an inner conductor (1), and a cross-linked fluororubber porous insulator (2), a copper-plastic composite tape winding and shielding layer (3), a copper wire winding and shielding layer (4) and a fluororesin sheath layer (5) which are sequentially coated outside the inner conductor (1), wherein the cross-linked fluororubber porous insulator (2) is a cross-linked fluororubber body on which a plurality of through holes (6) are formed, the thickness of the cross-linked fluororubber porous insulator (2) is not less than 0.35mm, the copper-plastic composite tape winding and shielding layer (3) is a copper-plastic composite tape unidirectional spiral lapping and covering winding structure, the copper-plastic composite tape comprises an outer copper foil layer and an inner PET film layer, a thermoplastic polyurethane inner bonding layer is arranged outside the copper foil layer, the copper foil layer winding and shielding layer (4) is formed by unidirectional spiral winding of a plurality of tinned copper wires, and the spiral angle is 70-85 degrees, and an outer thermoplastic polyurethane bonding layer is arranged outside the copper wire winding and shielding layer (4), the thickness of the thermoplastic polyurethane inner bonding layer and the thickness of the thermoplastic polyurethane outer bonding layer are both 1-3 mu m, and the outer diameter of the fluororesin sheath layer (5) is 0.85-3.6 mm.

2. The loose-proof, bend-resistant, thin-diameter coaxial cable of claim 1, wherein: the inner conductor (1) is formed by stranding a plurality of tinned copper monofilaments, and the wire diameter of each tinned copper monofilament is 0.04 mm-0.12 mm.

3. The loose-proof, bend-resistant, thin-diameter coaxial cable of claim 2, wherein: the lay length of the inner conductor (1) is 4 to 10 times of the outer diameter of the inner conductor (1).

4. The loose-proof, bend-resistant, thin-diameter coaxial cable of claim 1, wherein: the outer diameter of the inner conductor (1) is not more than 1.8 mm.

5. The loose-proof, bend-resistant, thin-diameter coaxial cable of claim 1, wherein: the thickness of the copper foil layer is 6-8 μm.

6. The loose-proof, bend-resistant, thin-diameter coaxial cable of claim 1, wherein: the thickness of the PET film layer is not less than 10 times of that of the copper foil layer.

7. The loose-proof, bend-resistant, thin-diameter coaxial cable of claim 1, wherein: the thickness of the cross-linked fluorine rubber porous insulator (2) is not more than 1.5 mm.

8. The loose-proof, bend-resistant, thin-diameter coaxial cable of claim 1, wherein: the porosity of the crosslinked fluororubber porous insulator (2) is 20% to 40%.

9. The loose-proof, bend-resistant, thin-diameter coaxial cable of claim 1, wherein: the thickness of the fluororesin sheath layer (5) is 0.1mm to 1.6 mm.

10. The loose-proof, bend-resistant, thin-diameter coaxial cable of claim 1, wherein: the fluororesin sheath layer (5) is a PFA, FEP or PTFE sheath layer.