CN219497369U

CN219497369U - Soft heat-resistant compression-resistant flat cable

Info

Publication number: CN219497369U
Application number: CN202320490638.2U
Authority: CN
Inventors: 李清华; 吴英俊; 蔡长威; 刘书鑫; 王礼国
Original assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Current assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-08-08
Anticipated expiration: 2033-03-15

Abstract

The utility model discloses a soft heat-resistant pressure-resistant flat cable, which comprises three copper monofilaments which are transversely arranged at intervals in a row, two longitudinally arranged copper strands are abutted between adjacent copper monofilaments to form an inner conductor layer together, a tinned outer conductor layer is formed on the outer surface of the inner conductor layer by electroplating, a polyimide wrapping layer, an XLPE inner insulating layer, an ETFE outer insulating layer, a nylon wire anti-torsion wrapping layer and a polyurethane outer sheath are sequentially wrapped outside the tinned outer conductor layer, and a PPS resin core material is filled between the polyimide wrapping layer and the tinned outer conductor layer. The flat cable core is balanced and stable in structure, better in flexibility, resistant to extrusion deformation, higher in pressing strength, firm in press-fitting connection, and capable of improving reliability of electric connection.

Description

Soft heat-resistant compression-resistant flat cable

Technical Field

The application relates to the technical field of cables, in particular to a soft heat-resistant compression-resistant flat cable.

Background

When the terminal of the communication equipment cable is connected, the terminal needs to be applied, when the communication cable is in crimping installation with the terminal, the contact area between the terminal and a cable wire is not enough easily caused by improper operation, the connection is not firm, the electrical connectivity is poor, and faults are easy to cause. Moreover, the inner conductor is mostly in a circular section, and is easy to deform when being extruded and bent, so that the wire core structure is unstable, the thermal stability is poor, and the electrical characteristics are greatly influenced.

Disclosure of Invention

The utility model provides a to the not enough of prior art, the technical problem who solves provides a soft heat-resisting pressure-resistant flat cable, and cable core structure is balanced stable, and the pliability is better, and resistant extrusion warp, compression strength is higher, ensures press-fitting firm in connection, improves electrical connection's reliability.

The technical problems are solved by the following technical scheme.

The soft heat-resistant compression-resistant flat cable comprises three copper monofilaments which are transversely arranged at intervals in a row, two longitudinally arranged copper strands are arranged between the adjacent copper monofilaments in an abutting mode, an inner conductor layer is formed together, a tinned outer conductor layer is formed on the outer surface of the inner conductor layer in an electroplating mode, a polyimide wrapping layer, an XLPE inner insulating layer, an ETFE outer insulating layer, a nylon wire anti-torsion wrapping layer and a polyurethane outer sheath are sequentially wrapped outside the tinned outer conductor layer, and a PPS resin core material is filled between the polyimide wrapping layer and the tinned outer conductor layer.

Preferably, the transverse amplitude of the inner conductor layer is not more than 2.8mm, and the ratio of the longitudinal amplitude to the transverse amplitude of the inner conductor layer is 1:2 to 1:3.

Preferably, the polyimide wrap layer has a thickness of 35 μm to 80 μm.

Preferably, the tin-plated outer conductor layer has a thickness of 40 μm to 60 μm.

Preferably, the copper monofilament and the copper stranded wire are elliptical conductors with equal cross sections.

Preferably, the copper stranded wire is formed by stranding and compacting a plurality of soft copper wires.

Preferably, the XLPE inner insulation layer and the ETFE outer insulation layer together have a thickness of 0.3mm to 1.8mm.

Preferably, the polyimide wrapping layer is a polyimide resin tape lapping and wrapping structure, and the lapping rate is 20% to 30%.

Preferably, the nylon wire anti-torsion wrapping layer is an inner and outer double-layer nylon strand wire mutually reverse spiral winding and braiding structure, and the winding distances are different.

Preferably, the polyurethane outer sheath has a thickness of 0.45mm to 5mm.

The beneficial effects of this application:

1. the cable adopts three copper monofilaments and four copper stranded wires to form the inner conductor structure balanced stable, and copper monofilaments and copper stranded wires mix and make the pliability of inner conductor better, and oval conductor cross-section structure is able to bear the extrusion deformation, forms the tinned outer conductor layer through electroplating in the outer surface of inner conductor layer, optimizes tinned outer conductor layer thickness for copper monofilaments and copper stranded wires are the driving fit and become whole, can not appear loosely, possess higher tensile strength and compression strength, press-fit firm in connection with binding post, ensure electrical property's reliability.

2. Through increasing polyimide around the covering to pack PPS resin core material between tinned outer conductor layer and polyimide around the covering, polyimide around the covering has high insulating properties, and thermal stability is excellent, helps improving the high temperature resistant grade of cable, and PPS resin has excellent heat resistance and high mechanical strength, improves the thermal stability of cable, strengthens mechanical strength.

3. By increasing the nylon wire anti-torsion cladding, the tensile resistance of the cable is improved, the local stress concentration of the inner conductor layer is reduced, the torque force is reduced, and the torsion resistance and the bending resistance of the cable are greatly improved.

Drawings

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

Reference numerals illustrate:

1-copper monofilament, 2-copper stranded wire, 3-inner conductor layer, 4-tinned outer conductor layer, 5-polyimide cladding layer, 6-XLPE inner insulation layer, 7-ETFE outer insulation layer, 8-nylon wire anti-torsion wrapping layer, 9-polyurethane outer sheath and 10-PPS resin core material.

Detailed Description

The terminology used in the description of the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application, as will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, the flexible heat-resistant and pressure-resistant flat cable according to the embodiment of the application includes three copper monofilaments 1 transversely arranged at intervals in a row, two copper strands 2 arranged longitudinally are abutted between adjacent copper monofilaments 1 to form an inner conductor layer 3 together, further, the copper monofilaments 1 and the copper strands 2 are oval conductors with uniform cross sections, specifically, the copper strands 2 are formed by twisting and compacting a plurality of soft copper wires. The transverse amplitude of the inner conductor layer 3 is not more than 2.8mm, and the ratio of the longitudinal amplitude to the transverse amplitude of the inner conductor layer 3 is 1:2 to 1:3. The outer surface of the inner conductor layer 3 is electroplated to form a tin-plated outer conductor layer 4, and further, the tin-plated outer conductor layer 4 has a thickness of 40-60 μm. The outside of the tinned outer conductor layer 4 is sequentially coated with a polyimide wrapping layer 5, an XLPE inner insulating layer 6, an ETFE outer insulating layer 7, a nylon wire anti-torsion wrapping layer 8 and a polyurethane outer sheath 9, and a PPS resin core material 10 is filled between the polyimide wrapping layer 5 and the tinned outer conductor layer 4. The polyimide clad layer 5 has a thickness of 35 μm to 80 μm. The XLPE inner insulation layer 6 and the ETFE outer insulation layer 7 together have a thickness of 0.3mm to 1.8mm. In one embodiment, the polyimide clad layer 5 is a polyimide resin tape lapping structure and the lapping rate is 20% to 30%. In one embodiment, the nylon wire anti-torsion wrapping layer 8 is formed by mutually reversely spirally winding and braiding inner and outer double-layer nylon strands, and the winding distances are different. The polyurethane outer sheath 9 has a thickness of 0.45mm to 5mm.

Finally, it should be noted that: the foregoing examples are merely specific embodiments of the present application, and are not intended to limit the scope of the present application, but the present application is not limited thereto, and those skilled in the art will appreciate that while the foregoing examples are described in detail, the present application is not limited thereto. Any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or make equivalent substitutions for some of the technical features within the technical scope of the disclosure of the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims

1. The flexible heat-resistant compression-resistant flat cable is characterized in that: including three copper monofilament (1) transversely be a row interval arrangement and butt between the adjacent copper monofilament (1) arrange two vertically arranged copper stranded conductor (2) and form inner conductor layer (3) jointly, inner conductor layer (3) surface electroplate and form tinned outer conductor layer (4), tinned outer conductor layer (4) outside cladding has polyimide around covering (5), XLPE inner insulation layer (6), ETFE outer insulation layer (7), nylon wire anti-torsion around covering (8) and polyurethane oversheath (9) in proper order, polyimide around covering (5) with be filled with PPS resin core material (10) between tinned outer conductor layer (4).

2. The flexible heat-resistant and pressure-resistant flat cable according to claim 1, wherein: the transverse amplitude of the inner conductor layer (3) is not more than 2.8mm, and the ratio of the longitudinal amplitude to the transverse amplitude of the inner conductor layer (3) is 1:2 to 1:3.

3. The flexible heat-resistant and pressure-resistant flat cable according to claim 1, wherein: the polyimide cladding (5) has a thickness of 35 μm to 80 μm.

4. The flexible heat-resistant and pressure-resistant flat cable according to claim 1, wherein: the tin-plated outer conductor layer (4) has a thickness of 40 μm to 60 μm.

5. The flexible heat-resistant and pressure-resistant flat cable according to claim 1, wherein: the copper monofilament (1) and the copper stranded wire (2) are elliptical conductors with equal cross sections.

6. The flexible heat-resistant and pressure-resistant flat cable according to claim 1, wherein: the copper stranded wires (2) are formed by stranding and compacting a plurality of soft copper wires.

7. The flexible heat-resistant and pressure-resistant flat cable according to claim 1, wherein: the XLPE inner insulation layer (6) and the ETFE outer insulation layer (7) together have a thickness of 0.3mm to 1.8mm.

8. The flexible heat-resistant and pressure-resistant flat cable according to claim 1, wherein: the polyimide wrapping layer (5) is a polyimide resin tape covering wrapping structure, and the covering rate is 20-30%.

9. The flexible heat-resistant and pressure-resistant flat cable according to claim 1, wherein: the nylon wire anti-torsion wrapping layer (8) is of an inner and outer double-layer nylon strand yarn mutually reverse spiral winding and weaving structure and has different winding distances.

10. The flexible heat-resistant and pressure-resistant flat cable according to claim 1, wherein: the thickness of the polyurethane outer sheath (9) is 0.45mm to 5mm.