CN105405529B

CN105405529B - Data transmission cable

Info

Publication number: CN105405529B
Application number: CN201510459859.3A
Authority: CN
Inventors: 陈亿昌
Original assignee: Alltop Electronics Suzhou Co Ltd; Alltop Technology Co Ltd
Current assignee: Liquan Technology Taicang Co ltd
Priority date: 2015-07-30
Filing date: 2015-07-30
Publication date: 2019-04-05
Anticipated expiration: 2035-07-30
Also published as: CN105405529A

Abstract

The present invention provides a data transmission cable, which includes a wire group. The wire group includes a first wire and a second wire arranged side by side and adjacent to each other. The first wire and the second wire respectively have a first conductor at the center, a first cladding layer covering the periphery of the first conductor, and a second cladding layer covering the periphery of the first cladding layer. Wherein, the dielectric constant of the first cladding layer is lower than that of the second cladding layer.

Description

Data transmission cable

Technical field

It is higher the present invention relates to a kind of data transmission cable more particularly to a kind of data transmission efficiency and effectively anti-tampering Data transmission cable.

Background technique

In 3C industry, transmission cable can be used as the medium being electrically connected between two electronic devices and can be stable progress Desired signal transmits operation, and therefore, transmission cable is generally applicable to various electronic devices.Wherein with USB, HDMI, The transmission cable of the interfaces such as DVI, Displayport connection is high with transmission rate, distance is remote, quality is high and is liked by masses, Usage quantity also increasingly increases.There is a plurality of plain conductor inside the equal transmission cables, coat insulating layer outside plain conductor, with Short circuit phenomenon occurs between isolation metal signal conducting wire；In addition, a metal shielding layer can be coated outside each signal conductor, with The crosstalk phenomenon of anti-stop signal part, and shield external signal interference.But with the development of computer technology, computer is hard The speed of the electronic product datas such as disk and mainboard transmission is more and more fast, and transmission frequency is also higher and higher, the amount of radiation of electromagnetic wave It increases, in high frequency, ultra-high-frequency data transmission field, ideal shield effectiveness, nothing has been not achieved in traditional shielding material Method meets the requirement of Electro Magnetic Compatibility.

Therefore, it is necessary to be improved to existing technology, to overcome the above technical problem.

A kind of summary of the invention data higher the purpose of the present invention is to provide data transmission efficiency and effectively anti-tampering pass Defeated cable.

To solve to realize above-mentioned purpose, the present invention adopts the following technical scheme: a kind of data transmission cable comprising conducting wire Group, the conducting wire group include the first conducting wire and the second conducting wire side by side and being disposed adjacent, the first conducting wire in the conducting wire group and Second conducting wire is Difference signal pair, first conducting wire and the second conducting wire be respectively provided with the first conductor positioned at center position, The first clad for being coated on the first conductor periphery and the second clad for being coated on the first clad periphery, wherein described the The dielectric coefficient of one clad is lower than the dielectric coefficient of the second clad, and second clad is to inhale wave layer.

As a further improvement of the present invention, the data transmission cable further includes that the third being set on the outside of conducting wire group is led Line, the privates, the first conducting wire and the second conducting wire are arranged side by side.

As a further improvement of the present invention, the privates has the second conductor and packet positioned at center position Cover the third clad of the second conductor periphery.

As a further improvement of the present invention, the diameter of second conductor different from the first conducting wire and the second conducting wire first The diameter of conductor.

As a further improvement of the present invention, the data transmission cable further includes being coated on conducting wire group simultaneously and third is led External coating on the outside of line to be positioned.

As a further improvement of the present invention, the material of first clad, the second clad and external coating is not Together.

As a further improvement of the present invention, the data transmission cable further includes covering conducting wire group and privates simultaneously Cover film of the upper side and lower side to be positioned.

As a further improvement of the present invention, the data transmission cable includes several spaced conducting wire groups, And aforementioned several spaced conducting wire groups are arranged side by side.

As a further improvement of the present invention, in several conducting wire groups, each conducting wire group two sides are provided with the third and lead Line.

Compared with prior art, the present invention is by the way that the dielectric coefficient for being located at the first clad of inside on the outside of conducting wire to be arranged For the dielectric coefficient lower than the second clad for being located at outside, the can be so provided by lesser first clad of dielectric coefficient The preferable signal transmission environment of one conductor, and the external world can be effectively suppressed in when the second clad is using dielectric coefficient higher suction wave layer Electromagnetic interference effectively completely cuts off the first conductor and the external world, guarantees high frequency, ultra-high frequency signal transmission.

Detailed description of the invention Fig. 1 is the stereoscopic schematic diagram of one preferred embodiment of data transmission cable of the present invention.

Fig. 2 is the cross-sectional view of data transmission cable shown in Fig. 1.

Specific embodiment

A preferred embodiment of data transmission cable 100 of the present invention is shown also referring to Fig. 1 and Fig. 2.The data Transmission cable 100 includes at least a conducting wire group 1.The conducting wire group 1 includes the first conducting wire 11 and second side by side and being disposed adjacent Conducting wire 12.First conducting wire 11 and the second conducting wire 12 are Difference signal pair, can be used for transmitting high-frequency signal.

It please refers to shown in Fig. 1 and Fig. 2, first conducting wire 11 and the second conducting wire 12 are respectively provided with positioned at center position First conductor 13, the first clad 14 for being coated on 13 periphery of the first conductor, the second packet for being coated on 14 periphery of the first clad Coating 15.In the present invention, the dielectric coefficient of first clad 14 is lower than the dielectric coefficient of the second clad 15.Wherein, First clad 14 may be configured as dielectric coefficient close to air, so that the impedance of the first clad 14 is smaller, so as to mention For the preferable signal transmission environment of the first conductor 13, the propagation delay of signal is reduced, reduces the crosstalk between signal, guarantees signal High speed effectively transmit, reduce signal decaying.In addition, to be set as dielectric coefficient relatively high for second clad 15, specifically Wave layer is inhaled to be made of the absorbing material by caning absorb electromagnetic wave, thus, it is possible to absorb extraneous radiation using the suction wave layer 15 Electromagnetic wave, effective inhibition outside electromagnetic interference, to the first conductor 13 and it is extraneous effectively completely cut off, guarantee high frequency, hyperfrequency Signal transmission；In addition, the suction wave layer 15 also has the performances such as light weight, heatproof, moisture-proof, anticorrosive, and then it can effectively protect The first conductor 13 positioned inside extends the service life of data transmission cable 100 of the present invention.

Further, the data transmission cable 100 further includes the privates 2 for being set to the outside of conducting wire group 1, and described the Three wires 2 can be used as the signal interference that earth lead further eliminates 1 outside of conducting wire group, also can be changed use according to demand On the way.The privates 2, the first conducting wire 11 and the second conducting wire 12 are disposed adjacent side by side, i.e., its axis is in the same plane, Make the whole shape of the data transmission cable 100 in flat.

The privates 2 have positioned at center position the second conductor 21 and cladding the second conductor 21 periphery the Three clads 22.The diameter of second conductor 21 different from the first conducting wire 11 and the first conductor 13 of the second conducting wire 12 diameter, The diameter of i.e. described second conductor 21 can be adjusted according to the impedance match situation of Difference signal pair, can for more than or less than The diameter of first conductor 13 of the first conducting wire 11 and the second conducting wire 12.

Further, the data transmission cable 100 further includes the first conducting wire 11, the second conducting wire to the conducting wire group 1 12 and the privates 2 carry out relative positioning and protection serving 3.The serving 3 can be while be coated on conducting wire group 1 With the external coating in the outside of privates 2, or the upper side and lower side of conducting wire group 1 and privates 2 is covered simultaneously to be determined The cover film of position.The material of first clad 14, the second clad 15 and serving 3 is different.

Incorporated by reference to shown in Fig. 1 and Fig. 2, in the present embodiment, the data transmission cable 100 is arranged including several intervals The conducting wire group 1.Several conducting wire groups 1 may include being used for transmission the Difference signal pair of high-frequency signal and being used for transmission low frequency signal Signal pair.Further, privates 2 can be respectively set in each 1 two sides of conducting wire group, which can be used as ground connection Conducting wire further eliminates the signal interference between adjacent wires group 1；It certainly, can also be according to demand as power lead etc..It is aforementioned Several spaced conducting wire groups 1 and privates 2 recline setting side by side and mutually, and its axis be located at it is same flat On face, make the shape of cable entirety in flat.

In conclusion the present invention is by will be located at the first clad 14 of inside on the outside of the first conducting wire 11 and the second conducting wire 12 Dielectric coefficient be set below the dielectric coefficient of the second clad 15 positioned at outside, so can be lesser by dielectric coefficient First clad 14 provides the preferable signal transmission environment of the first conductor 13, and the second clad 15 is higher using dielectric coefficient Outside electromagnetic interference can be effectively suppressed when inhaling wave layer, the first conductor 13 and the external world are effectively completely cut off, guarantee high frequency, hyperfrequency Signal transmission.

It should be understood that above embodiments are merely to illustrate the present invention and not limit technical side described in the invention Case, although this specification is referring to the above embodiments, the present invention has been described in detail, the common skill of this field Art personnel should be appreciated that person of ordinary skill in the field still can modify or equivalently replace the present invention, and All do not depart from the technical solution and its improvement of the spirit and scope of the present invention, should all cover in scope of the presently claimed invention It is interior.

Claims

1. A data transmission cable, comprising a wire group, the wire group comprising a first wire and a second wire arranged side by side and adjacent, characterized in that: the first wire and the second wire respectively have a central position the first conductor, the first cladding layer covering the periphery of the first conductor, and the second cladding layer covering the periphery of the first cladding layer, the dielectric constant of the first cladding layer is lower than the first cladding layer The dielectric coefficient of the second cladding layer, the second cladding layer is a wave absorbing layer.

2 . The data transmission cable according to claim 1 , wherein the first wire and the second wire in the wire group are differential signal pairs, and the data transmission cable further comprises a The third conducting wire, the third conducting wire, the first conducting wire and the second conducting wire are all arranged side by side.

3 . The data transmission cable of claim 2 , wherein the third wire has a second conductor at the center and a third coating layer covering the periphery of the second conductor. 4 .

4. The data transmission cable of claim 3, wherein the diameter of the second conductor is different from the diameter of the first conductor and the diameter of the first conductor of the second conductor.

5 . The data transmission cable of claim 2 , wherein the data transmission cable further comprises an outer covering that is simultaneously coated on the outside of the wire group and the third wire for positioning. 6 .

6 . The data transmission cable according to claim 5 , wherein the materials of the first coating layer, the second coating layer and the outer coating layer are all different. 7 .

7 . The data transmission cable of claim 2 , wherein the data transmission cable further comprises a cover film covering both the upper and lower sides of the wire group and the third wire for positioning. 8 .

8. The data transmission cable according to any one of claims 2 to 7, wherein the data transmission cable comprises a plurality of the wire groups arranged at intervals, and the plurality of the wire groups arranged at intervals Set side by side.

9 . The data transmission cable of claim 8 , wherein in the plurality of wire groups, the third wires are disposed on both sides of each wire group. 10 .