CN216412747U

CN216412747U - Multilayer film-wound high-speed signal wire

Info

Publication number: CN216412747U
Application number: CN202122960740.8U
Authority: CN
Inventors: 李清; 刘亚兵
Original assignee: Hisetec Electronic Co Ltd
Current assignee: Hisetec Electronic Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-04-29
Anticipated expiration: 2031-11-29

Abstract

The utility model discloses a multilayer film-wound high-speed signal wire which comprises a core wire, an insulating layer, a first shielding layer, a second shielding layer, a ground wire and an outer coating layer which are sequentially distributed from inside to outside, wherein the core wire comprises a conductor and an inner insulating layer coated on the outer side of the conductor, the insulating layer is coated on the outer sides of a pair of core wires, the first shielding layer is coated on the outer side of the insulating layer, the second shielding layer is coated on the outer side of the first shielding layer, the number of the ground wires is two, the two ground wires are symmetrically distributed on two sides of the second shielding layer, the outer coating layer is coated on the outer sides of the second shielding layer and the ground wires, and the inner insulating layer and the insulating layer are both PTFE thin films. The PTFE film is used as the inner insulating layer and the outer insulating layer, the wire outer diameter value of the high-speed signal wire is reduced, the outer diameter value of the finished wire after processing is reduced relative to the traditional wire, the space occupancy rate of the signal wire is reduced, the signal wire can be used in a smaller space, the signal wire is softer, and the signal wire is more favorable for the installation and winding operation of the signal wire.

Description

Multilayer film-wound high-speed signal wire

Technical Field

The utility model relates to the technical field of signal cables, in particular to a multilayer film-wound high-speed signal line.

Background

With the popularization and application of technologies such as big data, cloud computing and 5G, the requirement on the transmission speed of data is higher and higher, and the requirement on the transmission speed of a data transmission line is also higher and higher. Therefore, data transmission lines capable of transmitting data at high speed are becoming increasingly important in the market. Meanwhile, because present electronic products are often developed towards light, thin and small directions, in order to be used in cooperation with the electronic products and be convenient for storage, the softness requirement of the data transmission line is higher and higher. It is often desirable that the data transmission lines be both flexible and easily bendable. The insulation of the traditional high-speed signal line is generally made of PP and FEP materials, the dielectric coefficient of the PP material is 2.2-2.6, the dielectric coefficient of the FEP material is 2.1, the core wire is thick in insulation, so that the cable is hard, and the use requirements of people on high-speed transmission and flexibility of the signal line cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multilayer film-wound high-speed signal line.

According to one aspect of the utility model, the multilayer film-wound high-speed signal line comprises a core wire, an insulating layer, a first shielding layer, a second shielding layer, a ground wire and an outer coating layer which are sequentially distributed from inside to outside, wherein the core wire comprises a conductor and an inner insulating layer coated on the outer side of the conductor, the insulating layer is coated on the outer sides of a pair of core wires, the first shielding layer is coated on the outer side of the insulating layer, the second shielding layer is coated on the outer side of the first shielding layer, the number of the ground wires is two, the two ground wires are symmetrically distributed on two sides of the second shielding layer, the outer coating layer is coated on the outer sides of the second shielding layer and the ground wire, and the inner insulating layer and the insulating layer are both PTFE films.

The utility model has the beneficial effects that: according to the utility model, the PTFE film is used as the inner insulating layer and the outer insulating layer, so that the wire outer diameter value of the high-speed signal wire is reduced, the outer diameter value of the finished wire after processing is reduced relative to the traditional wire, the space occupancy rate of the signal wire is reduced, the signal wire can be used in a smaller space, and the signal wire is softer, so that the signal wire is more beneficial to the installation and winding operation of the signal wire; the first shielding layer and the second shielding layer are arranged, so that the shielding effect of the signal line on external interference signals can be improved, and the accuracy and the fluency of data transmission of the signal line can be improved.

In some embodiments, the conductor is any one of a copper conductor, a silver-plated copper conductor, and a tin-plated copper conductor. The conductor is any one of a copper conductor, a silver-plated copper conductor and a tin-plated copper conductor, and can better transmit data at high speed.

In some embodiments, the inner insulating layer is a PTFE membrane. The dielectric coefficient of the PTFE film is 1.8, the PTFE film can meet higher signal transmission rate and has soft characteristic. Use the PTFE film as the internal insulation layer, reduced the thickness of internal insulation layer, on the basis of guaranteeing insulating effect, make the signal line more soft, easily accomodate and buckle.

In some embodiments, the insulating layer is a PTFE film, and the insulating layer covers the outer sides of the two core wires in a spirally wound manner. The dielectric coefficient of the PTFE film is 1.8, the PTFE film can meet higher signal transmission rate and has soft characteristic. Use the PTFE film as the insulating layer, reduced the thickness of insulating layer, reduced the whole external diameter value of signal line, on the basis of guaranteeing insulating effect, make the signal line more soft, easily accomodate and buckle.

In some embodiments, the first shielding layer is an aluminum foil, the first shielding layer is wrapped outside the insulating layer in a longitudinal wrapping manner, and the conductive surface of the first shielding layer faces the second shielding layer. The first shielding layer is made of aluminum foil, so that the effect of well shielding external signals is achieved, the error rate of data transmission can be reduced, the stability of high-frequency signal transmission is ensured, and the smoothness of high-speed data transmission is ensured.

In some embodiments, the second shielding layer is an aluminum foil, the second shielding layer is wrapped outside the first shielding layer in a longitudinal wrapping manner, and the conductive surface of the second shielding layer faces the outer layer. The second shielding layer is made of aluminum foil, so that the effect of well shielding external signals is achieved, the error rate of data transmission can be reduced, the stability of high-frequency signal transmission is ensured, and the smoothness of high-speed data transmission is ensured.

In some embodiments, the centers of the cross sections of the two ground wires and the centers of the cross sections of the two conductors are on the same horizontal straight line. The two ground wires lead the current to the ground, so that the ground protection effect is achieved, and the use safety of the signal wire is improved.

In some embodiments, the outer layer is an FEP sheath, and the outer layer is wrapped outside the second shielding layer and the two ground wires in an extrusion molding manner. The FEP sheath protects all layers inside the FEP sheath, and prevents the signal wire from being damaged and corroded mechanically.

Drawings

FIG. 1 is a cross-sectional view of a multilayer film-wound high speed signal line in accordance with an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to examples.

Referring to fig. 1, the present invention provides a multilayer film-wound high-speed signal line, which includes a core wire 1, an insulating layer 2, a first shielding layer 3, a second shielding layer 4, a ground wire 5, and an outer layer 6, which are sequentially arranged from inside to outside.

The core wires 1 are two in number, which are in contact with each other and extend in the longitudinal direction. Each core wire 1 includes a conductor 11 and an inner insulating layer 12 that covers the conductor 11 in a spirally wound manner. The conductor 11 is any one of a copper conductor, a silver-plated copper conductor, and a tin-plated copper conductor. The conductor 11 is used to transmit high-speed signals. The inner insulating layer 12 is a PTFE film. The dielectric coefficient of the PTFE film is 1.8, the high-demand signal transmission rate can be met, and the PTFE film is soft and used as an inner insulating layer, occupies small wire outer diameter value and has good bending degree. The inner insulating layers 12 of the two core wires 1 are in contact with each other.

The insulating layer 2 is a PTFE film, and covers the outer sides of the two core wires 1 in a spiral winding mode to tightly press the two core wires 1. The first shielding layer 3 is an aluminum foil and is wrapped outside the insulating layer 2 in a longitudinal wrapping manner, and the conductive surface of the first shielding layer 3 faces the second shielding layer 4. The second shielding layer 4 is an aluminum foil and is wrapped outside the first shielding layer 3 in a longitudinal wrapping manner, and the conductive surface of the second shielding layer 4 faces the outer covering layer 6. The first shielding layer 3 and the second shielding layer 4 play a role in shielding external signal interference.

The number of the ground wires 5 is two, the two ground wires 5 are symmetrically distributed on the left side and the right side of the second shielding layer 4, and the centers of the cross sections of the two ground wires 4 and the centers of the cross sections of the two conductors 11 are on the same horizontal straight line. The outer layer 6 is an FEP sheath, and the FEP sheath covers the second shielding layer 4 and the outer sides of the two ground wires 5 in an extrusion molding manner to press the ground wires 5 and the second shielding layer 4. The FEP sheath protects all layers inside the FEP sheath, and prevents the signal wire from being damaged and corroded mechanically.

The above description is only for the embodiments of the present invention, and it is obvious to those skilled in the art that various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. The multilayer film-wound high-speed signal wire is characterized by comprising a core wire, an insulating layer, a first shielding layer, a second shielding layer, a ground wire and an outer coating layer which are sequentially distributed from inside to outside, wherein the core wire comprises a conductor and an inner insulating layer coated on the outer side of the conductor, the insulating layer is coated on the outer sides of a pair of core wires, the first shielding layer is coated on the outer side of the insulating layer, the second shielding layer is coated on the outer side of the first shielding layer, the number of the ground wires is two, the two ground wires are symmetrically distributed on two sides of the second shielding layer, the outer coating layer is coated on the outer sides of the second shielding layer and the ground wire, and the inner insulating layer and the insulating layer are PTFE thin films.

2. A multi-layer film-wound high-speed signal wire as claimed in claim 1, wherein the conductor is any one of a copper conductor, a silver-plated copper conductor, and a tin-plated copper conductor.

3. A multi-layer film-wound high-speed signal wire as claimed in claim 1, wherein the inner insulating layer is wrapped around the outer side of the conductor in a spiral winding manner.

4. The multi-layer film-wound high-speed signal wire as claimed in claim 1, wherein the insulating layer is wrapped around the two core wires in a spiral winding manner.

5. The multi-layer film-wound high-speed signal wire as claimed in claim 1, wherein the first shielding layer is an aluminum foil, the first shielding layer is longitudinally wrapped on the outside of the insulating layer, and a conductive surface of the first shielding layer faces the second shielding layer.

6. The multi-layer film-wound high-speed signal wire as claimed in claim 1, wherein the second shielding layer is an aluminum foil, the second shielding layer is wrapped outside the first shielding layer in a longitudinal wrapping manner, and a conductive surface of the second shielding layer faces the outer layer.

7. A multi-layer film-wound high-speed signal wire as claimed in claim 1, wherein the centers of the cross-sections of the two ground lines and the two conductors are on the same horizontal straight line.

8. The multi-layer film-wound high-speed signal wire of claim 1, wherein the outer layer is an FEP sheath, and the outer layer is extruded to cover the outer sides of the second shielding layer and the two ground wires.