CN212010525U

CN212010525U - Anti-torsion thin-diameter multi-core cable

Info

Publication number: CN212010525U
Application number: CN202020825804.6U
Authority: CN
Inventors: 高旭皓; 江平; 黄建卫; 王成旺; 王毅; 王登峰; 邵千俊
Original assignee: Zhejiang Products Zhongda Cable Co ltd; Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Current assignee: Zhejiang Products Zhongda Cable Co ltd; Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-11-24
Anticipated expiration: 2030-05-18

Abstract

The utility model discloses a thin footpath multicore cable of antitorque transition, cable core constitute by the concentric transposition of a plurality of coaxial insulation sinle silk, the cable core outside in proper order the cladding have the fluororesin to wind band layer, copper plastic composite band around package shielding layer and oversheath, coaxial insulation sinle silk includes the insulated wire core that inner conductor and a plurality of PFA resin filler line strand formation with one heart, the outside cladding in proper order of insulated wire core has inner insulating layer, metal to weave shielding layer and outer insulating layer, the inner conductor external diameter is 0.04mm to 0.15mm, PFA resin filler line external diameter is 0.03mm to 0.1mm, the fluororesin winds the band layer for the clearance around the package structure, copper plastic composite band takes the lid structure around the package shielding layer for copper plastic composite band. On the basis of the small-diameter manufacture, the flexibility and the torsion resistance of the multi-core cable are ensured, the occurrence of wire breakage is effectively prevented, and the multi-core cable is durable in use.

Description

Anti-torsion thin-diameter multi-core cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to an antitorque transition thin footpath multicore cable.

Background

Multi-core cables are one of the main varieties of cables. The multi-core cable is required to be applied to multi-core cables with good flexibility in electrical connection and control of electronic machines, medical equipment and the like, and the multi-core cables are also developed towards the direction of thinning and flexibility in the trend of miniaturization development of industrial machine equipment, so that higher requirements are provided for the multi-core cables. The commonly applied multi-core cable insulation layer is usually made of foaming resin, has weak mechanical strength, is not tear-resistant, and hinders the diameter-reducing manufacturing quality of the cable.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a thin footpath multicore cable of antitorque commentaries on classics type, on the basis of thin footpath change preparation, ensures the pliability and the antitorque commentaries on classics characteristic of multicore cable, effectively prevents that the broken string from appearing, durable use.

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

The anti-torsion thin-diameter multi-core cable comprises a cable core and is characterized in that the cable core is formed by concentrically twisting a plurality of coaxial insulating wire cores, a fluororesin winding tape layer, a copper-plastic composite tape winding shielding layer and an outer sheath are sequentially wrapped outside the cable core, each coaxial insulating wire core comprises an inner conductor and an insulating wire core body formed by concentrically twisting a plurality of PFA resin filling wires, an inner insulating layer, a metal woven shielding layer and an outer insulating layer are sequentially wrapped outside the insulating wire core body, the outer diameter of the inner conductor is 0.04mm to 0.15mm, the outer diameter of the PFA resin filling wire is 0.03mm to 0.1mm, the fluororesin winding tape layer is of a gap winding structure, and the copper-plastic composite tape winding shielding layer is of a copper-plastic composite tape cover winding structure.

Preferably, the inner conductor is formed by bundling a plurality of tinned copper monofilaments, and the diameter of each tinned copper monofilament is 0.02mm to 0.05 mm.

Preferably, the fluororesin wrapping tape layer is made of a PTFE resin tape.

Preferably, the copper-plastic composite belt comprises an outer layer of copper foil belt and an inner layer of PTFE resin.

Preferably, the thickness of the copper-plastic composite tape wrapping shielding layer is 0.1mm to 0.3 mm.

Preferably, the outer sheath has a thickness of 0.5mm to 1.65 mm.

Preferably, the outer sheath is a PVC sheath.

Preferably, the metal braided shielding layer is formed by weaving inner layer tin-plated copper monofilaments and outer layer tin-plated copper monofilaments in a reverse spiral winding mode, and the diameter of each inner layer tin-plated copper monofilament is smaller than that of each outer layer tin-plated copper monofilament.

Preferably, the inner insulating layer has a thickness of 8 to 30 μm.

Preferably, the inner insulating layer and the outer insulating layer are both FEP, PFA or ETFE resin insulating layers.

The utility model has the advantages that:

1. the insulated wire core body of the coaxial insulated wire core is formed by concentrically twisting the inner conductor and the PFA resin filling wire, a space gap is formed among the inner conductor, the PFA resin filling wire and the inner insulating layer, the flexibility is good, the tensile strength is increased, wire breakage is prevented, the torque force in the twisting and bending process is effectively reduced, and the torsion resistance of the cable is improved. The metal braided shielding layer of the coaxial insulated wire core is formed by braiding inner-layer tinned copper monofilaments and outer-layer tinned copper monofilaments in a reverse spiral winding mode, the diameters of the inner-layer tinned copper monofilaments are smaller than those of the outer-layer tinned copper monofilaments, improvement of flexibility of a cable is facilitated, the braiding density of the inner-layer tinned copper monofilaments is large and helps to prevent internal high-frequency signals from leaking to the outside, the electrical resistance of the outer-layer tinned copper monofilaments is small, and interference from external signals is restrained. And, the diameter of the inner layer tinned copper monofilament is different from that of the outer layer tinned copper monofilament, so that the weaving gap can be effectively reduced, the friction phenomenon generated between the tinned copper monofilaments is greatly reduced, the noise shielding characteristic is improved, the flexibility and the torsion resistance of the cable are increased, and the phenomenon of wire breakage is not easy to occur.

2. Copper is moulded compound area and is taken the lid around the package structure around the package shielding layer for copper is moulded compound area, can effectually restrain inside signal or noise leakage to outside and restrain the interference that comes from the external signal, copper is moulded compound area and is included outer and the PET film inlayer of copper foil tape, make this shielding layer be difficult for appearing the fracture phenomenon, and simultaneously, fluororesin is around the package band layer for the clearance around the package structure, fluororesin area coefficient of friction is little, the pliability is good, help reducing the stress concentration that copper is moulded compound area around the package shielding layer, reduce the torque capacity, improve antitorque commentaries on classics nature and durability and usability.

Drawings

FIG. 1 is a schematic cross-sectional structural view of an embodiment of the present application;

fig. 2 is a schematic cross-sectional structure view of a coaxial insulated wire core according to an embodiment of the present application.

In the figure: 1-coaxial insulated wire core, 11-inner conductor, 12-PFA resin filling wire, 13-inner insulating layer, 14-metal woven shielding layer, 15-outer insulating layer, 2-fluororesin wrapping tape layer, 3-copper-plastic composite tape wrapping shielding layer and 4-outer sheath.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1, in the anti-twisting thin-diameter multi-core cable according to the embodiment of the present invention, the cable core is formed by concentrically twisting a plurality of coaxial insulated wire cores 1. As shown in fig. 2, the coaxial insulated wire core 1 includes an insulated wire core body formed by concentrically twisting an inner conductor 11 and a plurality of PFA resin filler wires 12, specifically, the inner conductor 11 is formed by bundling a plurality of tin-plated copper monofilaments, and the diameter of each tin-plated copper monofilament is 0.02mm to 0.05 mm. The outer diameter of the inner conductor 11 is 0.04mm to 0.15mm, and the outer diameter of the PFA resin filling line 12 is 0.03mm to 0.1 mm. The outside cladding in proper order of insulated wire core has interior insulating layer 13, metal woven shield 14 and outer insulating layer 15, and specific theory, metal woven shield 14 is that inner layer tinned copper monofilament and outer tinned copper monofilament are reverse spiral winding each other and weave the constitution, inner layer tinned copper monofilament diameter is less than outer tinned copper monofilament diameter. The thickness of the inner insulating layer 13 is preferably 8 to 30 μm. The inner insulating layer 13 and the outer insulating layer 15 are made of, for example, FEP, PFA, or ETFE resin.

The cable core is externally coated with a fluororesin winding band layer 2, a copper-plastic composite band winding shielding layer 3 and an outer sheath 4 in sequence, the fluororesin winding band layer 2 is a gap winding structure, and the copper-plastic composite band winding shielding layer 3 is a copper-plastic composite band lapping and covering winding structure. The fluororesin wrapping tape layer 2 is, for example, a PTFE resin tape. In one embodiment, the copper-plastic composite tape comprises an outer layer of copper foil tape and an inner layer of PTFE resin. Further, the thickness of the copper-plastic composite tape wrapping shielding layer 3 is 0.1mm to 0.3 mm. In one embodiment, the outer sheath 4 is a PVC sheath. Further, the outer sheath 4 has a thickness of 0.5mm to 1.65 mm.

While the invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the claims of the present application belong to the protection scope of the present invention.

Claims

1. Antitorque commentaries on classics type thin footpath multicore cable, characterized by: the cable core comprises a plurality of coaxial insulated wire cores (1) with one heart transposition, the cable core outside has the cladding in proper order that the fluororesin winds band layer (2), the compound area of copper plastics winds around package shielding layer (3) and oversheath (4), coaxial insulated wire core (1) includes the insulated wire core body that inner conductor (11) and a plurality of PFA resin filler (12) with one heart transposition formed, insulated wire core body outside has inner insulating layer (13), metal to weave shielding layer (14) and outer insulating layer (15) with one heart, inner conductor (11) external diameter is 0.04mm to 0.15mm, PFA resin filler (12) external diameter is 0.03mm to 0.1mm, the fluororesin winds band layer (2) around the package structure for the clearance, the compound area of copper plastics winds the package shielding layer (3) and takes the cover structure for the compound area of copper plastics.

2. The twist resistant, small diameter, multi-core cable of claim 1, wherein: the inner conductor (11) is formed by bundling a plurality of tinned copper monofilaments, and the diameter of each tinned copper monofilament is 0.02 mm-0.05 mm.

3. The twist resistant, small diameter, multi-core cable of claim 1, wherein: the fluororesin wrapping tape layer (2) adopts a PTFE resin tape.

4. The twist resistant, small diameter, multi-core cable of claim 1, wherein: the copper-plastic composite belt comprises a copper foil belt outer layer and a PTFE resin inner layer.

5. The twist resistant, small diameter, multi-core cable of claim 1, wherein: the thickness of the copper-plastic composite tape lapping shielding layer (3) is 0.1mm to 0.3 mm.

6. The twist resistant, small diameter, multi-core cable of claim 1, wherein: the thickness of the outer sheath (4) is 0.5mm to 1.65 mm.

7. The twist resistant, small diameter, multi-core cable of claim 1, wherein: the outer sheath (4) is a PVC sheath.

8. The twist resistant, small diameter, multi-core cable of claim 1, wherein: the metal braided shielding layer (14) is formed by weaving inner-layer tin-plated copper monofilaments and outer-layer tin-plated copper monofilaments in a reverse spiral winding mode, and the diameter of each inner-layer tin-plated copper monofilament is smaller than that of each outer-layer tin-plated copper monofilament.

9. The twist resistant, small diameter, multi-core cable of claim 1, wherein: the thickness of the inner insulating layer (13) is 8 to 30 μm.

10. The twist resistant, small diameter, multi-core cable of claim 1, wherein: the inner insulating layer (13) and the outer insulating layer (15) are both FEP, PFA or ETFE resin insulating layers.