CN217086172U

CN217086172U - Flexible pressure-resistant connection type flat cable

Info

Publication number: CN217086172U
Application number: CN202220861526.9U
Authority: CN
Inventors: 高旭皓; 王成旺; 李清华; 吴英俊; 蔡长威
Original assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Current assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-07-29
Anticipated expiration: 2032-04-14

Abstract

The utility model discloses a soft withstand voltage connects type flat cable, include by the oval inner conductor layer of a plurality of copper monofilament transposition and sticis formation, the outer electroplating of inner conductor layer forms tin-plated outer conductor layer, the inner conductor layer major axis is no longer than 2.8mm, the inner conductor layer minor axis is 1:2 to 1:5 with the major axis ratio, the outside cladding has in proper order of the tin-plated outer conductor layer to wind the covering in the polyimide, the polyamide imide is outer around the covering, foaming fluororesin inner sheath and the crowded package oversheath of fluororesin, is 30 mu m to 80 mu m around the covering thickness in the polyimide, the polyamide imide is outer around the covering thickness for 20 mu m to 45 mu m. The flat cable is good in flexibility and higher in pressing strength, and is firmly connected with the wiring terminal in a press-fitting mode, and the reliability of electrical connection is guaranteed.

Description

Flexible pressure-resistant connection type flat cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a soft withstand voltage connects flat cable of type.

Background

When the tail end of a communication equipment cable is connected, the communication equipment cable needs to be applied to the wiring terminal, when the communication cable is installed in a crimping mode with the wiring terminal, the contact area between the wiring terminal and a cable conductor is not enough due to improper operation, connection is not firm, the electric connectivity is poor, and faults are easy to cause.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a soft withstand voltage connects flat cable of type, and the pliability is good, and it is higher to press intensity, ensures with binding post pressure equipment firm in connection, guarantee electrical connection's reliability.

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

The flexible pressure-resistant flat cable comprises an oval inner conductor layer formed by twisting and pressing a plurality of copper single wires, wherein a tinned outer conductor layer is formed on the outer surface of the inner conductor layer in an electroplating mode, the long axis of the inner conductor layer is not more than 2.8mm, the ratio of the short axis to the long axis of the inner conductor layer is 1:2 to 1:5, a polyimide inner wrapping layer, a polyamideimide outer wrapping layer, a foamed fluororesin inner sheath and a fluororesin extruding outer sheath are sequentially wrapped outside the tinned outer conductor layer, the thickness of the polyimide inner wrapping layer is 30-80 mu m, and the thickness of the polyamideimide outer wrapping layer is 20-45 mu m.

Preferably, the diameter of the copper monofilament is 0.05mm to 0.12 mm.

Preferably, the tin-plated outer conductor layer has a thickness of 30 to 60 μm.

Preferably, the thickness ratio of the polyimide inner wrapping layer to the polyamide imide outer wrapping layer is 1:1 to 2: 1.

Preferably, the foamed fluororesin inner jacket has a thickness of 0.15 to 0.8 mm.

Preferably, the thickness of the fluororesin extruded outer sheath is 0.15mm to 1.6 mm.

Preferably, the polyimide inner wrapping layer and the polyamide imide outer wrapping layer are both in lapping and wrapping structures and have the same wrapping direction.

Preferably, the capping rate is 25% to 40%.

Preferably, the foamed fluororesin inner jacket is a PFA, FEP or PTFE foamed insulating jacket.

Preferably, the fluorine resin extruded outer sheath is a PFA, FEP or PTFE insulating sheath.

The utility model has the advantages that:

1. form the tinned outer conductor layer at the inner conductor layer surface through electroplating, optimize the tinned outer conductor layer thickness, on the basis of guaranteeing flexible ability for the driving fit becomes whole between the copper monofilament, can not appear loosely, possesses higher tensile strength and is pressing intensity, with binding post pressure equipment firm in connection, ensures the reliability of electrical characteristics.

2. Increase in the polyimide between outer conductor layer and foaming fluororesin inner sheath around covering and polyamideimide outward around the covering, the polyimide is around the covering and has high insulating properties, and thermal stability is excellent, helps improving the high temperature resistant grade of cable, and the polyamideimide outward winds the covering pliability good, and is corrosion-resistant, has good low temperature resistance, and mechanical properties is excellent, helps improving the stretch-proofing performance and the low temperature resistant characteristic of cable.

3. The foamed fluororesin inner sheath and the fluororesin extruded outer sheath are adopted, the thickness proportion is optimally designed, the layers are mutually reinforced structural layers, the tensile strength and the elongation of the fluororesin extruded outer sheath are greater than those of the foamed fluororesin inner sheath, the flexibility and the bending resistance of the cable are improved, and the flexibility of the cable installation process is favorably improved.

Drawings

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

In the figure: the copper-clad composite material comprises 1-copper monofilament, 2-inner conductor layer, 3-tin-plated outer conductor layer, 4-polyimide inner wrapping layer, 5-polyamide-imide outer wrapping layer, 6-foamed fluororesin inner jacket and 7-fluororesin extruded outer jacket.

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, the flexible pressure-resistant flat cable according to the embodiment of the present invention includes an oval inner conductor layer 2 formed by twisting and compressing a plurality of copper monofilaments 1, preferably, the diameter of each copper monofilament 1 is 0.05mm to 0.12 mm. The outer surface of the inner conductor layer 2 is electroplated to form a tin-plated outer conductor layer 3, and preferably, the thickness of the tin-plated outer conductor layer 3 is 30-60 μm. The long axis of the inner conductor layer 2 is not more than 2.8mm, and the ratio of the short axis to the long axis of the inner conductor layer 2 is 1:2 to 1: 5.

The outside of the tinned outer conductor layer 3 is sequentially coated with a polyimide inner wrapping layer 4, a polyamide-imide outer wrapping layer 5, a foamed fluororesin inner sheath 6 and a fluororesin extruded outer sheath 7. The thickness of the polyimide inner wrapping layer 4 is 30-80 microns, the thickness of the polyamide imide outer wrapping layer 5 is 20-45 microns, further, the thickness ratio of the polyimide inner wrapping layer 4 to the polyamide imide outer wrapping layer 5 is 1: 1-2: 1, further, the polyimide inner wrapping layer 4 and the polyamide imide outer wrapping layer 5 are both in lapping and wrapping structures and are in the same lapping direction, and the lapping rate is 25-40%. The foamed fluororesin inner sheath 6 is, for example, a PFA, FEP or PTFE foamed insulating sheath, and the foamed fluororesin inner sheath 6 has a thickness of 0.15mm to 0.8 mm. The fluororesin extruded outer sheath 7 is, for example, a PFA, FEP or PTFE insulating sheath, and the thickness of the fluororesin extruded outer sheath 7 is 0.15mm to 1.6 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. Flexible pressure-resistant type flat cable, characterized by: the anti-corrosion conductive wire comprises an oval inner conductor layer (2) formed by stranding and pressing a plurality of copper monofilaments (1), a tinned outer conductor layer (3) is formed on the outer surface of the inner conductor layer (2) in an electroplating mode, the long axis of the inner conductor layer (2) is not more than 2.8mm, the ratio of the short axis to the long axis of the inner conductor layer (2) is 1:2 to 1:5, a polyimide inner wrapping layer (4), a polyamideimide outer wrapping layer (5), a foamed fluororesin inner sheath (6) and a fluororesin extruding outer sheath (7) are sequentially wrapped outside the tinned outer conductor layer (3), the thickness of the polyimide inner wrapping layer (4) is 30 mu m to 80 mu m, and the thickness of the polyamideimide outer wrapping layer (5) is 20 mu m to 45 mu m.

2. The flexible, pressure-resistant, flat cable according to claim 1, wherein: the wire diameter of the copper monofilament (1) is 0.05 mm-0.12 mm.

3. The flexible, pressure-resistant, flat cable according to claim 1, wherein: the thickness of the tin-plated outer conductor layer (3) is 30 to 60 [ mu ] m.

4. The flexible, pressure-resistant, flat cable according to claim 1, wherein: the thickness ratio of the polyimide inner wrapping layer (4) to the polyamide imide outer wrapping layer (5) is 1: 1-2: 1.

5. The flexible, pressure-resistant, flat cable according to claim 1, wherein: the thickness of the inner sheath (6) of the foaming fluororesin is 0.15mm to 0.8 mm.

6. The flexible, pressure-resistant, flat cable according to claim 1, wherein: the thickness of the fluororesin extruded outer sheath (7) is 0.15mm to 1.6 mm.

7. The flexible, pressure-resistant, flat cable according to claim 1, wherein: the polyimide inner wrapping layer (4) and the polyamide imide outer wrapping layer (5) are both covered wrapping structures and have the same wrapping direction.

8. The flexible, pressure-resistant, flat cable according to claim 7, wherein: the overlapping rate is 25% to 40%.

9. The flexible, pressure-resistant, flat cable according to claim 1, wherein: the inner foamed fluororesin sheath (6) is a PFA, FEP or PTFE foamed insulating sheath.

10. The flexible, pressure-resistant, flat cable according to claim 1, wherein: the fluororesin extruded outer sheath (7) is a PFA, FEP or PTFE insulating sheath.