CN109979673A - A kind of data cable and its manufacturing method - Google Patents
A kind of data cable and its manufacturing method Download PDFInfo
- Publication number
- CN109979673A CN109979673A CN201910123565.1A CN201910123565A CN109979673A CN 109979673 A CN109979673 A CN 109979673A CN 201910123565 A CN201910123565 A CN 201910123565A CN 109979673 A CN109979673 A CN 109979673A
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- CN
- China
- Prior art keywords
- layer
- periphery
- metal foil
- data
- data lines
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
- H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
- H01B13/266—Bending and adhesively bonding of a metallic screen
Abstract
The present invention relates to a kind of data cable and its manufacturing methods.The data cable includes: more data lines arranged in parallel, has the core being constructed from a material that be electrically conducting and is located at the exodermis of the core periphery；Protective layer surrounds the more data lines and the periphery of the data line is arranged in；Shielded layer; to wind the periphery that overlapping mode is located at the protective layer; the shielded layer has the first metal foil layer positioned inside, is located in the middle insulating layer and the second metal foil layer positioned at outside, and the first adjacent metal foil layer and the second metal foil layer mutually partially overlap.According to above structure, the electromagnetic shielding performance to external electromagnetic interference can be improved.
Description
Technical field
The present invention relates to technical field of cables, specifically, being related to a kind of electromagnetic shielding improved to external electromagnetic interference
The data cable and its manufacturing method of performance.
Background technique
With the high speed development of multimedia technology, people propose increasingly higher demands to multimedia transmission quality, especially
Its demand to high-definition multimedia increases, and the multimedia of simple transmission video or audio signal is no longer satisfied present society
The demand of meeting.HDMI wire, that is, high-definition multimedia interface line is High Definition Multimedia Interface
Abbreviation, is a kind of digitized video/audio interface technology, can transmit uncompressed HD video and multichannel sound to high-quality
Frequency evidence；Simultaneously without carrying out D/A or analog/digital conversion before signal transmits, it is ensured that the video-audio signal of best quality
Transmission.HDMI cable generally comprises data cable as shown in Figure 1 as data line.
Fig. 1 is the cross-sectional view for indicating data cable in the prior art, and Fig. 2 is to indicate internal shield in the prior art
Winding overlap schematic diagram.As shown in Figures 1 and 2, data cable in the prior art includes that two data being parallel to each other pass
Defeated line 1, the ground line 2 being made of metallic conductor are coated on data line 1 and the shielded layer 3 being grounded on the outside of 2 and are located at
The protective layer 4 in 3 outside of shielded layer.Wherein, data line 1 includes the core 11 being made of plain conductor and is coated on core
The exodermis 12 in external week.It is arranged near the data line 1 along the length direction of data line 1 in ground line 2
Afterwards, it is wrapped around in the outside shielded layer 3 of two data lines 1 and ground line 2.Then, in the outside of shielded layer 3 shape again
At protective layer 4, to prevent the opening during bending and is twisted of shielded layer 3.
Shielded layer 3 includes the insulating layer 32 positioned at the first metal foil layer 31 of inside and positioned at outside, the first metal foil layer
31 play the role of shielding from external electromagnetic interference.The shielded layer 3 is spirally wound on two in such a way that successively overlapped
The outside of data line 1 and ground line 2.As shown in Fig. 2, first metal foil layer 31 is located at line during winding shielded layer 3
On the inside of cable, the mode that insulating layer 32 is located at outside is wound, a side edge of the first metal foil layer 31 and the insulation wound before
The edge part of layer 32 mutually overlaps contact, moreover, another lateral edge portion of the first metal foil layer 31 is contacted with ground line 2.As a result,
External electromagnetic interference can be passed to cable inner by the insulating layer 32 between the first metal foil layer 31 after winding, to data
The data-signal transmitted in transmission line 1 interferes.Especially when data line 1 transmits the vision signal of high frequency, external electromagnetic
The influence of interference can become apparent from.
In addition, in actual use, being grounded 2 tension can make two data lines 1 will in entire cable length
They are inconsistently separated, and are fluctuated up and down so as to cause the impedance of data line.Reduce in this way keep impedance minimum and
Thus consistency needed for maximum value produces negative effect to signal integrity.In addition, the position of ground line can cause to manufacture
Problem cannot terminate ground line with automatic method or single line termination.In this way, when data line and ground line be not same
When in plane, they cannot be terminated simultaneously.Therefore, most of ground lines in data cable are manual terminations or utilize secondary
Technique.
Summary of the invention
In order to solve the above problem, the present invention provides the screen improved while one kind does not have ground line to external electromagnetic interference
Cover the data cable of performance.
Data cable of the present invention includes: more data lines arranged in parallel, is had by conductive material
The core of composition and the exodermis for being located at the core periphery；Protective layer surrounds the more data lines and is arranged in
The periphery of the data line；Shielded layer, to wind the periphery that overlapping mode is located at the protective layer, the shielded layer has
Positioned inside the first metal foil layer, be located in the middle insulating layer and positioned at second metal foil layer in outside, adjacent first
Metal foil layer and the second metal foil layer mutually partially overlap.
In addition, a kind of data cable manufacturing method of the present invention is the following steps are included: more data lines are put down
Row is placed；Protective layer is formed in the periphery for the more data lines being placed in parallel；It is formed in the periphery of the protective layer
Shielded layer, the shielded layer have the first metal foil layer positioned inside, are located in the middle insulating layer and positioned at the of outside
Two metal foil layers, also, adjacent first metal foil layer and second metal foil layer 33 mutually part overlaps.
According to the data cable of above structure, can be realized it is as described below the utility model has the advantages that
(1) cancel ground line in data cable, can prevent data line caused by ground line in cable length
Frequently separation, so that data line is by tighter constraint, to generate more consistent impedance value.
(2) protective layer is formed in the periphery of data line, tighter and bigger constraint can be provided for data line
Thus a possibility that low signal attenuation sharply increases drops in power.
(3) due to shielded layer it is adjacent between the first metal foil layer and the second metal foil layer mutually partially overlap,
Complete shielded layer area increases, and improves the interference free performance to external electromagnetic interference.
Detailed description of the invention
By the way that embodiment is described in conjunction with following accompanying drawings, features described above of the invention and technological merit will become
More understands and be readily appreciated that.
Fig. 1 is the cross-sectional view for indicating data cable in the prior art；
Fig. 2 is the schematic diagram for indicating the winding bridging arrangement of internal shield in the prior art；
Fig. 3 is the cross-sectional view for indicating data cable of the present invention；
Fig. 4 is the schematic diagram for indicating the winding bridging arrangement of the internal shield of data cable of the present invention；
Specific embodiment
The embodiment of data cable and its manufacturing method of the present invention described below with reference to the accompanying drawings.This field
Those of ordinary skill will recognize, without departing from the spirit and scope of the present invention, can use a variety of different sides
Formula or combinations thereof is modified described embodiment.Therefore, attached drawing and description are regarded as illustrative in nature, rather than are used
In limitation scope of protection of the claims.In addition, in the present specification, attached drawing is drawn not in scale, and identical attached drawing mark
Note indicates identical part.
Fig. 3 is the cross-sectional view for the data cable for indicating that first embodiment of the invention is related to.As shown in Fig. 2, the present invention the
The data cable that one embodiment is related to includes positioned at innermost two data lines 1, is coated on two data lines 1
Outside protective layer 4 and be wound shielded layer 3 in the outside of the protective layer 4.Wherein, each data line 1 include by
The core 11 that plain conductor is constituted and the exodermis 12 for being coated on 11 periphery of core.Core 11 is either by a plain conductor
The single line conductor of composition is also possible to the twisted wire structure being made of the more wires being mutually twisted.It can be subtracted using lay configuration
The displacement of small core 11 stablizes structure and configured transmission, ductility with higher.Preferably, core material can make
With copper, and there is BTA (benzotriazole) layer in the outer application of the core 11.BTA can be in core as a kind of copper inhibitor
11 surfaces form thin film, avoid corroding.
Two data lines 1 are arranged to after being parallel to each other, form protective layer in the outside of two data lines 1
4, which can for example be formed by resin material, for protecting data line 1 and making itself and exterior insulation.Preferably,
The protective layer 4 can be mylar tape, and local coating has bonding agent on the polyester film adhesive tape.
Protective layer 4, which can be, is spirally wound on two radicals according to transmission for strip mylar tape in the way of spiral winding
The outside of line 1 is formed, and is also possible to be integrally formed in the periphery of data line 1 using resin coating processes.According to above-mentioned knot
Structure forms protective layer 4 due to not including individually ground line, and in the periphery of data line 1, can provide tightlier and more
Thus a possibility that low signal attenuation sharply increases drops in big restraining force.
In addition, being equipped with shielded layer 3 in the periphery of protective layer 4.As shown in figure 4, the shielded layer 3 includes positioned at the of inside
One metal foil layer 31 is located in the middle insulating layer 32 and the second metal foil layer 33 positioned at outside.Preferably, first metal foil
Layer 31 and the second metal foil layer 33 positioned at outside can be made of metal materials such as aluminium, copper, and it is (complete that insulating layer 12 can be FEP
Fluoroethylene-propylene copolymer) material, mylar tape etc. formed.
The shielded layer 3 is the periphery that the shielding band of strip is spirally wound on to protective layer 4 in such a way that successively overlapped
And form, during the winding process, a side edge of the first metal foil layer 31 of shielded layer 3 and the side of the second metal foil layer 33
Edge part mutually overlaps, so that adjacent 33 mutual electrical contact of the first metal foil layer 31 and the second metal foil layer.In this way, same
The data cable of the prior art shown in Fig. 2 is compared, and is increased the area of complete shielded layer, is improved to external electromagnetic interference
Shield effectiveness.
In addition, when data cable of the present invention is used for such as HDMI cable, it can be in the outside of the data cable
(outside for being usually distributed multiple data cables of setting) is equipped with the external shielding layer 5 being made of metal material, the external shielding layer 5
Such as it can be and reticular structure is woven into using the tin plating multiply soft copper silk by annealing.At this point, being located at outside shielded layer 3
Second metal foil layer 33 of side is in electrical contact with external shielding layer 5, therefore, the first metal foil layer 31 of the shielded layer 3 of mutual electrical contact,
Second metal foil layer 33 and external shielding layer 5 form complete shielding construction, so that external electromagnetic interference is difficult to enter into data
Cable inner and the transmission performance for interfering the high-frequency signal in data line.
The present invention also provides a kind of manufacturing methods for manufacturing above-mentioned data cable.In the following, the manufacturing method is described in detail.
Firstly, two data lines 1 are placed in parallel.It is in close contact at this point, two data lines 1 are preferred, but
Predetermined distance can be kept each other.
Then, protective layer 4 is formed in the outside for above-mentioned two data lines 1 being placed in parallel.Protective layer 4 can be benefit
The outside that strip mylar tape is spirally wound on two data lines 1 is formed with spiral winding mode, is also possible to
The periphery of data line 1 is integrally formed in using resin coating processes.
Then, protective layer 4 periphery formed include positioned inside the first metal foil layer, be located in the middle insulating layer,
Positioned at the shielded layer 3 of second metal foil layer in outside.The shielded layer 3 is by the shielding band of strip by part spiral shell in a manner of overlapped
Rotation is wrapped in the periphery of protective layer 4 and is formed.In shielded layer 3, adjacent 33 phase of the first metal foil layer 31 and the second metal foil layer
It partially overlaps and is in electrical contact between mutually.
The data cable made using the above manufacturing method is transmitted due to not including individually ground line, and in data
The periphery of line 1 forms protective layer 4, can provide tighter and bigger restraining force, and what thus drop low signal attenuation sharply increased can
It can property.In addition, the data cable compared with technology is compared, the area of complete shielded layer is increased, is improved dry to external electromagnetic
The shield effectiveness disturbed.
In the above embodiment, it is illustrated by taking the data cable comprising two data lines as an example, but need not
Doubt, data cable of the invention can include one or more data line in inside.Moreover, it relates to data
The material of each component in cable, can be not limited to the above embodiments in the material that enumerates, other well known material can be used
Material is constituted.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of data cable characterized by comprising
More data lines arranged in parallel have the core being constructed from a material that be electrically conducting and are located at the core periphery
Exodermis；
Protective layer surrounds the more data lines and the periphery of the data line is arranged in；
Shielded layer, to wind the periphery that overlapping mode is located at the protective layer, the shielded layer has the first gold medal positioned inside
Belong to layers of foil, be located in the middle insulating layer and the second metal foil layer positioned at outside, adjacent the first metal foil layer and the second gold medal
Belong to layers of foil mutually partially to overlap.
2. data cable according to claim 1, which is characterized in that
Include two data lines arranged in parallel.
3. data cable according to claim 1 or 2, which is characterized in that
The protective layer is that the mylar tape comprising bonding agent is wrapped in the periphery of the more data lines and is formed.
4. data cable according to claim 1 or 2, which is characterized in that
The protective layer is the periphery that the more data lines are integrally formed using resin coated technique.
5. data cable according to claim 1 or 2, which is characterized in that
In the outside of the shielded layer, the external shielding layer being constructed from a material that be electrically conducting can also be set, the external shielding layer with it is described
Second metal foil layer in the outside of shielded layer is in electrical contact.
6. a kind of data cable manufacturing method, which comprises the following steps:
More data lines are placed in parallel；
Protective layer is formed in the periphery for the more data lines being placed in parallel；
Shielded layer is formed in the periphery of the protective layer, during the shielded layer has the first metal foil layer positioned inside, is located at
Between insulating layer and the second metal foil layer positioned at outside, also, adjacent first metal foil layer and second gold medal
Belong to layers of foil mutually partially to overlap.
7. data cable manufacturing method according to claim 6, which is characterized in that
The protective layer is that the mylar tape comprising bonding agent is wrapped in the periphery of the more data lines and is formed.
8. data cable manufacturing method according to claim 6, which is characterized in that
The protective layer is the periphery that the more data lines are integrally formed using resin coated technique.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910123565.1A CN109979673A (en) | 2019-02-18 | 2019-02-18 | A kind of data cable and its manufacturing method |
| PCT/CN2019/095216 WO2020168671A1 (en) | 2019-02-18 | 2019-07-09 | Data cable and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910123565.1A CN109979673A (en) | 2019-02-18 | 2019-02-18 | A kind of data cable and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109979673A true CN109979673A (en) | 2019-07-05 |
Family
ID=67077116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910123565.1A Pending CN109979673A (en) | 2019-02-18 | 2019-02-18 | A kind of data cable and its manufacturing method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109979673A (en) |
| WO (1) | WO2020168671A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020168671A1 (en) * | 2019-02-18 | 2020-08-27 | 济宁市海富电子科技有限公司 | Data cable and manufacturing method thereof |
| CN112712916A (en) * | 2019-10-25 | 2021-04-27 | 矢崎总业株式会社 | Communication cable and wire harness |
| CN114930472A (en) * | 2020-01-14 | 2022-08-19 | 莫列斯有限公司 | Multilayer shielded ground cable and related methods |
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| CN109979673A (en) * | 2019-02-18 | 2019-07-05 | 济宁市海富电子科技有限公司 | A kind of data cable and its manufacturing method |
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2019
- 2019-02-18 CN CN201910123565.1A patent/CN109979673A/en active Pending
- 2019-07-09 WO PCT/CN2019/095216 patent/WO2020168671A1/en active Application Filing
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| CN2842670Y (en) * | 2005-11-09 | 2006-11-29 | 李明斌 | Novel high-definition multi-media interface digital-code signal transmission cable |
| CN201673723U (en) * | 2010-05-21 | 2010-12-15 | 河北华通线缆集团有限公司 | Square cable for telecommunication equipment |
| CN202258420U (en) * | 2011-09-05 | 2012-05-30 | 深圳立讯精密工业股份有限公司 | High-speed signal transmission cable |
| CN208045183U (en) * | 2018-03-22 | 2018-11-02 | 富士康(昆山)电脑接插件有限公司 | Core wire group and the cable for using the core wire group |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020168671A1 (en) * | 2019-02-18 | 2020-08-27 | 济宁市海富电子科技有限公司 | Data cable and manufacturing method thereof |
| CN112712916A (en) * | 2019-10-25 | 2021-04-27 | 矢崎总业株式会社 | Communication cable and wire harness |
| CN114930472A (en) * | 2020-01-14 | 2022-08-19 | 莫列斯有限公司 | Multilayer shielded ground cable and related methods |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020168671A1 (en) | 2020-08-27 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190705 |
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| RJ01 | Rejection of invention patent application after publication |