CN217361150U

CN217361150U - Flexible pressure-resistant communication cable

Info

Publication number: CN217361150U
Application number: CN202220296183.6U
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: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-09-02
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses a withstand voltage switch-on signal cable of soft type, including the central core of counterpoint type wholly aromatic copolyamide tensile fiber, a plurality of line footpaths are 0.08mm to 0.15mm copper monofilament around the outside spiral winding of the central core of counterpoint type wholly aromatic copolyamide tensile fiber and form the inner conductor layer, the external diameter of the central core of counterpoint type wholly aromatic copolyamide tensile fiber is three to six times of copper monofilament line footpath, electroplate at the inner conductor surface and form the tinned outer conductor layer, the inner conductor layer external diameter is no more than 1mm, tinned outer conductor layer thickness is 30 mu m to 85 mu m, the tinned outer conductor layer outside has the crowded package outer insulating layer of foaming fluororesin and fluororesin in proper order and the thickness ratio is 1:1 to 1.5: 1. This communication cable pliability is good, and tensile strength is higher with the intensity of pressing, can ensure with binding post pressure equipment firm in connection, guarantees electrical connection's reliability.

Description

Flexible pressure-resistant communication cable

Technical Field

The application belongs to the technical field of cables, and particularly relates to a flexible type voltage-resistant communication 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 crimping mode with the wiring terminal, the contact area between the wiring terminal and a cable conductor is not enough, the connection is not firm, the electric connectivity is poor, and faults are easy to cause due to the fact that the communication cable is not operated properly and easily.

SUMMERY OF THE UTILITY MODEL

This application is not enough to prior art, and the technical problem that solve provides a withstand voltage switch-on communication cable of soft type, and the pliability is good, and tensile strength is higher with pressing intensity, can ensure with binding post pressure equipment firm in connection, guarantee electrical connection's reliability.

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

The soft type voltage-resistant communication cable comprises a para-position type wholly aromatic copolyamide tensile fiber central core material, wherein a plurality of copper monofilaments with the wire diameter of 0.08-0.15 mm are spirally wound around the outside of the para-position type wholly aromatic copolyamide tensile fiber central core material to form an inner conductor layer, the outer diameter of the para-position type wholly aromatic copolyamide tensile fiber central core material is three-six times of the wire diameter of the copper monofilaments, a tinned outer conductor layer is formed by electroplating on the outer surface of the inner conductor layer, the outer diameter of the inner conductor layer is not more than 1mm, the thickness of the tinned outer conductor layer is 30-85 micrometers, a foamed fluororesin inner insulating layer and a fluororesin extruded outer insulating layer are sequentially coated outside the tinned outer conductor layer, and the thickness ratio of the foamed fluororesin inner insulating layer to the fluororesin extruded outer insulating layer is 1: 1-1.5: 1.

Preferably, the copper monofilament lay length is five to ten times the outer diameter of the inner conductor layer.

Preferably, the outer diameter of the inner conductor layer is not less than 0.45 mm.

Preferably, the fluororesin is extruded to have a thickness of 0.15mm to 0.85 mm.

Preferably, the foamed fluororesin inner insulating layer and the fluororesin extruded outer insulating layer have a total thickness of 0.3mm to 1.6 mm.

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

Preferably, the fluorine resin extrusion coating outer insulating layer is a PFA, FEP or PTFE insulating layer.

Preferably, the tin-plated outer conductor layer has a thickness of 45 to 55 μm.

Preferably, the thickness ratio of the foamed fluororesin inner insulating layer to the fluororesin extruded outer insulating layer is 1.1:1 to 1.25: 1.

Preferably, the inner conductor layer has a spiral angle of 30 to 40 degrees.

The beneficial effect of this application:

1. the central core material is the para-type wholly aromatic copolyamide tensile fiber, the flexibility is good, the tensile elastic modulus is large, the tensile strength of the inner conductor layer is improved, the inner conductor layer can better bear the lateral pressure of a cable during bending, deformation and filament breakage are not prone to occurring, the bending resistance is enhanced, and good electrical performance is guaranteed.

2. Form the tinned outer conductor layer at the inner conductor layer surface that copper monofilament spiral winding formed through electroplating, rational design copper monofilament line footpath optimizes the tinned outer conductor layer thickness, on the basis of guaranteeing pliability 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, improves the reliability of electrical characteristic.

3. The insulating layer adopts the crowded package outer insulating layer of foaming fluororesin inner insulating layer and fluororesin, optimizes the thickness proportion, each other is the reinforcement structure layer, and the tensile strength and the elongation of the crowded package outer insulating layer of fluororesin are greater than the foaming fluororesin inner insulating layer, and the bending resistance is better, and the difficult tear phenomenon that appears is favorable to the nimble installation of cable.

Drawings

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

Description of reference numerals:

1-para-type wholly aromatic copolyamide tensile fiber central core material, 2-inner conductor layer, 3-tinned outer conductor layer, 4-foamed fluororesin inner insulating layer and 5-fluororesin extruded 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 flexible pressure-resistant communication cable according to the embodiment of the present application includes a positioning-type wholly aromatic copolyamide drawn fiber center core 1, and a plurality of copper monofilaments having a diameter of 0.08mm to 0.15mm are spirally wound around the outside of the positioning-type wholly aromatic copolyamide drawn fiber center core 1 to form an inner conductor layer 2, and specifically, the spiral angle of the inner conductor layer 2 is 30 degrees to 40 degrees. The outer diameter of the core material 1 of the para-type wholly aromatic copolyamide drawn fiber is three to six times the wire diameter of the copper monofilament, and the lay length of the copper monofilament is five to ten times the outer diameter of the inner conductor layer 2. The outer diameter of the inner conductor layer 2 is not more than 1mm, and further, the outer diameter of the inner conductor layer 2 is not less than 0.45 mm. And electroplating the outer surface of the inner conductor layer 2 to form a tinned outer conductor layer 3, wherein the thickness of the tinned outer conductor layer 3 is 30-85 μm, and further, the thickness of the tinned outer conductor layer 3 is 45-55 μm.

The tin-plated outer conductor layer 3 is coated with a foamed fluororesin inner insulating layer 4 and a fluororesin extruded outer insulating layer 5 in this order, and the foamed fluororesin inner insulating layer 4 is, for example, a PFA, FEP or PTFE foamed insulating layer. The fluororesin is extruded with an outer insulation layer 5 such as PFA, FEP or PTFE insulation. The thickness ratio of the foamed fluororesin inner insulating layer 4 to the fluororesin extruded outer insulating layer 5 is 1:1 to 1.5:1, and further, the thickness ratio of the foamed fluororesin inner insulating layer 4 to the fluororesin extruded outer insulating layer 5 is 1.1:1 to 1.25: 1. Specifically, the thickness of the fluororesin extruded outer insulation layer 5 is 0.15mm to 0.85 mm. The total thickness of the foamed fluororesin inner insulating layer 4 and the fluororesin extruded outer insulating layer 5 is 0.3mm to 1.6 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. The flexible pressure-resistant communication cable is characterized in that: comprises a core material (1) of a para-type wholly aromatic copolyamide drawn fiber, a plurality of copper monofilaments with the wire diameter of 0.08mm to 0.15mm are spirally wound around the outside of the core material (1) of the para-type wholly aromatic copolyamide drawn fiber to form an inner conductor layer (2), the outer diameter of the core material (1) is three to six times of the diameter of the copper monofilament, the outer surface of the inner conductor layer (2) is electroplated to form a tinned outer conductor layer (3), the outer diameter of the inner conductor layer (2) is not more than 1mm, the thickness of the tin-plated outer conductor layer (3) is 30-85 μm, the outer part of the tin-plated outer conductor layer (3) is sequentially coated with a foamed fluororesin inner insulating layer (4) and a fluororesin extruded outer insulating layer (5), the thickness ratio of the foamed fluororesin inner insulating layer (4) to the fluororesin extruded outer insulating layer (5) is 1:1 to 1.5: 1.

2. The flexible, crimp-resistant communications cable of claim 1, wherein: the copper monofilament lay length is five to ten times of the outer diameter of the inner conductor layer (2).

3. The flexible, crimp-resistant communications cable of claim 1, wherein: the outer diameter of the inner conductor layer (2) is not less than 0.45 mm.

4. The flexible, crimp-resistant communications cable of claim 1, wherein: the thickness of the fluororesin extruded outer insulating layer (5) is 0.15mm to 0.85 mm.

5. The flexible, crimp-resistant communications cable of claim 1, wherein: the total thickness of the foamed fluororesin inner insulating layer (4) and the fluororesin extruded outer insulating layer (5) is 0.3mm to 1.6 mm.

6. The flexible, crimp-resistant communications cable of claim 1, wherein: the foamed fluororesin inner insulating layer (4) is a PFA, FEP or PTFE foamed insulating layer.

7. The flexible, crimp-resistant communications cable of claim 1, wherein: the fluororesin extruded outer insulating layer (5) is a PFA, FEP or PTFE insulating layer.

8. The flexible, crimp-resistant communications cable of claim 1, wherein: the thickness of the tin-plated outer conductor layer (3) is 45-55 μm.

9. The flexible, crimp-resistant communications cable of claim 1, wherein: the thickness ratio of the foamed fluororesin inner insulating layer (4) to the fluororesin extruded outer insulating layer (5) is 1.1:1 to 1.25: 1.

10. The flexible, crimp-resistant communications cable of claim 1, wherein: the spiral angle of the inner conductor layer (2) is 30 to 40 degrees.