CN217008693U

CN217008693U - Pressure-resistant connection type conductive fiber flat cable

Info

Publication number: CN217008693U
Application number: CN202220459529.XU
Authority: CN
Inventors: 邵千俊; 王登峰; 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: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-07-19
Anticipated expiration: 2032-03-04

Abstract

The utility model discloses a pressure-resistant connection type conductive fiber flat cable which comprises six copper monofilament conductors which are arranged in a row and have axes positioned on the same plane to form an inner conductor layer, wherein the outer diameter of each copper monofilament conductor is not less than 0.5mm, the outer surface of the inner conductor layer is sequentially coated with a conductive fiber winding layer and a tinned outer conductor layer to form a cable core, the outer part of the cable core is sequentially coated with a foamed polyethylene inner insulating layer, a thermoplastic polyurethane bonding layer and a silane-grafted cross-linked linear high-density polyethylene outer insulating layer, the conductive fiber winding layer is of a conductive fiber bundle spiral winding structure, the thickness of the tinned outer conductor layer is 45-80 mu m, and the silane-grafted cross-linked linear high-density polyethylene outer insulating layer is in a long oval shape and the length of a short axis is 0.85-2.6 mm. The flat cable has better pressing strength, ensures firm press-fitting connection with the wiring terminal, and has better electrical connection reliability.

Description

Pressure-resistant connection type conductive fiber flat cable

Technical Field

The application belongs to the technical field of cables, and particularly relates to a pressure-resistant connection type flat conductive fiber cable.

Background

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

SUMMERY OF THE UTILITY MODEL

This application is not enough to prior art, and the technical problem that solve provides a withstand voltage type conductive fiber flat cable, has better intensity of pressing, ensures with binding post pressure equipment firm in connection, and the electrical connection reliability is better.

The present application solves the above-mentioned problems by the following technical solutions.

Withstand voltage connects type conductive fiber flat cable, including being one row of six copper monofilament conductors that arrange and the axis is located the coplanar and forming the inner conductor layer, copper monofilament conductor external diameter is not less than 0.5mm, the inner conductor layer surface coats conductive fiber winding layer and tinned outer conductor layer in proper order and forms the cable core, the cable core outside cladding has foamed polyethylene inner insulating layer, thermoplastic polyurethane adhesive linkage and silane grafting crosslinking linear high density polyethylene outer insulating layer in proper order, conductive fiber winding layer is conductive fiber bundle spiral winding structure, tinned outer conductor layer thickness is 45 mu m to 80 mu m, silane grafting crosslinking linear high density polyethylene outer insulating layer is oblong and minor axis length is 0.85mm to 2.6 mm.

Preferably, the tin-plated outer conductor layer has a thickness of 55 to 70 μm.

Preferably, the conductive fiber bundle is formed by twisting polyacrylonitrile-based carbon fibers and coating a copper conductive coating.

Preferably, the polyacrylonitrile-based carbon fiber has a wire diameter of not more than 18 μm.

Preferably, the conductive fiber winding layer is a structure in which two sets of conductive fiber bundles are spirally wound in opposite directions, and the spiral angle is 40 to 55 degrees.

Preferably, the foamed polyethylene inner insulation layer is a foamed polyethylene resin layer having a foaming ratio of 70% to 85%.

Preferably, the thickness of the thermoplastic polyurethane bonding layer is 8 μm to 15 μm.

Preferably, the thickness ratio of the foamed polyethylene inner insulation layer to the silane-grafted crosslinked linear high-density polyethylene outer insulation layer is 1:1 to 1.5: 1.

Preferably, the thickness of the foamed polyethylene inner insulation layer is 0.15mm to 0.9 mm.

Preferably, the foamed polyethylene inner insulation layer and the silane-grafted crosslinked linear high-density polyethylene outer insulation layer have a total thickness of 0.3mm to 1.8 mm.

The beneficial effect of this application:

1. the conductive fiber winding layer is formed on the outer surface of the inner conductor layer through the winding of the conductive fiber bundles, so that the looseness among the copper monofilament conductors is effectively prevented, the copper monofilament conductors are closely combined into an integral structure through coating the tinned outer conductor layer, the pressing strength is improved, the press-fitting connection with the wiring terminal is firm, and the reliable electrical characteristics after the press-fitting are ensured.

2. The conductive fiber bundle is formed by twisting polyacrylonitrile-based carbon fibers and coating a copper conductive coating, and a tinned outer conductor layer is easily covered outside the copper conductive coating in a sealing manner, so that the connection is firm, the electrical characteristics are stable, and the conductive fiber bundle is durable in use.

3. The foamed polyethylene inner insulating layer and the silane grafted cross-linked linear high-density polyethylene outer insulating layer are bonded into a whole through the thermoplastic polyurethane bonding layer, the tensile strength and the elongation of the outer insulating layer are greater than those of the inner insulating layer, the thickness design is optimized, the outer insulating layer serves as a reinforcing structural layer of the inner insulating layer to form a protection effect, the mechanical strength and the electrical insulating property are improved, and the durability and the usability are better.

Drawings

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

Description of reference numerals:

the cable comprises a 1-copper monofilament conductor, a 2-inner conductor layer, a 3-tinned outer conductor layer, a 4-foamed polyethylene inner insulating layer, a 5-thermoplastic polyurethane adhesive layer and a 6-silane grafted cross-linked linear high-density polyethylene outer insulating layer.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, the pressure-resistant type flat conductive fiber cable of the embodiment of the application comprises six copper monofilament conductors 1 arranged in a row and having axes located on the same plane to form an inner conductor layer 2, wherein the outer diameter of each copper monofilament conductor 1 is not less than 0.5mm, and the outer surface of the inner conductor layer 2 is sequentially coated with a conductive fiber winding layer and a tinned outer conductor layer 3 to form a cable core. The conductive fiber winding layer is of a conductive fiber bundle spiral winding structure, specifically, the conductive fiber bundle is formed by stranding polyacrylonitrile-based carbon fibers and coating the polyacrylonitrile-based carbon fibers with a copper conductive coating, and further, the wire diameter of the polyacrylonitrile-based carbon fibers is not more than 18 mu m. The conductive fiber winding layer is of a structure that two groups of conductive fiber bundles are mutually reverse spirally wound, and the spiral angle is 40-55 degrees.

The cable core is coated with a foamed polyethylene inner insulating layer 4, a thermoplastic polyurethane bonding layer 5 and a silane grafted cross-linked linear high-density polyethylene outer insulating layer 6 in sequence, the thickness of the tin-plated outer conductor layer 3 is 45-80 μm, and further, the thickness of the tin-plated outer conductor layer 3 is 55-70 μm. The silane grafted cross-linked linear high-density polyethylene outer insulation layer 6 is in an oblong shape, and the length of a short shaft is 0.85mm to 2.6 mm. The thickness of the thermoplastic polyurethane adhesive layer 5 is preferably 8 μm to 15 μm. The foamed polyethylene inner insulation layer 4 is a foamed polyethylene resin layer having a foaming ratio of 70% to 85%. The thickness ratio of the foamed polyethylene inner insulating layer 4 to the silane-grafted crosslinked linear high-density polyethylene outer insulating layer 6 is preferably 1:1 to 1.5:1, specifically, the thickness of the foamed polyethylene inner insulating layer 4 is 0.15mm to 0.9mm, and the total thickness of the foamed polyethylene inner insulating layer 4 and the silane-grafted crosslinked linear high-density polyethylene outer insulating layer 6 is 0.3mm to 1.8 mm.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. Withstand voltage connects type conductive fiber flat cable, characterized by: including being one row of arranging and six copper monofilament conductor (1) that the axis is located the coplanar form inner conductor layer (2), copper monofilament conductor (1) external diameter is not less than 0.5mm, inner conductor layer (2) surface cladding conductive fiber winding layer and tin-plating outer conductor layer (3) in proper order form the cable core, the cable core outside cladding has foamed polyethylene inner insulating layer (4), thermoplastic polyurethane adhesive linkage (5) and silane grafting crosslinking linear high density polyethylene outer insulating layer (6) in proper order, conductive fiber winding layer is conductive fiber bundle spiral winding structure, tin-plating outer conductor layer (3) thickness is 45 mu m to 80 mu m, silane grafting crosslinking linear high density polyethylene outer insulating layer (6) are long ellipse shape and minor axis length and are 0.85mm to 2.6 mm.

2. The pressure-resistance type flat cable of conductive fibers according to claim 1, wherein: the thickness of the tin-plated outer conductor layer (3) is 55-70 μm.

3. The pressure-resistant type conductive fiber flat cable according to claim 1, wherein: the conductive fiber bundle is formed by twisting polyacrylonitrile-based carbon fibers and coating copper conductive coatings.

4. The pressure-resistant type conductive fiber flat cable according to claim 3, wherein: the wire diameter of the polyacrylonitrile-based carbon fiber is not more than 18 mu m.

5. The pressure-resistance type flat cable of conductive fibers according to claim 1, wherein: the conductive fiber winding layer is of a structure that two groups of conductive fiber bundles are mutually reverse spirally wound, and the spiral angle is 40-55 degrees.

6. The pressure-resistant type conductive fiber flat cable according to claim 1, wherein: the foamed polyethylene inner insulation layer (4) is a foamed polyethylene resin layer with a foaming rate of 70-85%.

7. The pressure-resistant type conductive fiber flat cable according to claim 1, wherein: the thickness of the thermoplastic polyurethane bonding layer (5) is 8-15 mu m.

8. The pressure-resistance type flat cable of conductive fibers according to claim 1, wherein: the thickness ratio of the foamed polyethylene inner insulating layer (4) to the silane-grafted cross-linked linear high-density polyethylene outer insulating layer (6) is 1:1 to 1.5: 1.

9. The pressure-resistance type flat cable of conductive fibers according to claim 1, wherein: the thickness of the foamed polyethylene inner insulation layer (4) is 0.15mm to 0.9 mm.

10. The pressure-resistant type conductive fiber flat cable according to claim 1, wherein: the total thickness of the foamed polyethylene inner insulating layer (4) and the silane grafted cross-linked linear high-density polyethylene outer insulating layer (6) is 0.3mm to 1.8 mm.