CN102436873A - Shield 8-class digital cable provided with skeleton structure - Google Patents
Shield 8-class digital cable provided with skeleton structure Download PDFInfo
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- CN102436873A CN102436873A CN2011104428908A CN201110442890A CN102436873A CN 102436873 A CN102436873 A CN 102436873A CN 2011104428908 A CN2011104428908 A CN 2011104428908A CN 201110442890 A CN201110442890 A CN 201110442890A CN 102436873 A CN102436873 A CN 102436873A
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Abstract
The invention discloses a shield 8-class digital cable provided with a skeleton structure. The digital cable comprises a cross-shaped skeleton composed of a transverse blade and a vertical blade, wherein the cross-shaped skeleton is provided with a first cavity, a second cavity, a third cavity and a fourth cavity which are formed by the transverse blade and the vertical blade; a first twisting alignment, a second twisting alignment, a third twisting alignment and a fourth twisting alignment are respectively positioned in the first cavity, the second cavity, the third cavity and the fourth cavity; a cross-shaped bifacial aluminum tape skeleton the surface of which is coated with second aluminum foil layers is embedded in the cross-shaped skeleton, and the cross-shaped bifacial aluminum tape skeleton is composed of a transverse aluminum tape and a vertical aluminum tape; the lengths of the transverse aluminum tape and the vertical aluminum tape are greater than those of the transverse blade and the vertical blade, so that the end parts of the transverse aluminum tape and the vertical aluminum tape are extended out from the end face of the cross-shaped skeleton and then are connected with the inner surface of a total shielding layer; and the second aluminum foil layers on the surfaces of the transverse aluminum tape and the vertical aluminum tape are electrically contacted with a first aluminum foil layer. The digital cable provided by the invention has the advantages of improving the return loss, characteristic impedance and crosstalk attenuation due to the formation of a cavity shielding manner, and improving the production efficiency.
Description
Technical field
The present invention relates to the high-speed data cable field, be specifically related to a kind of 8 types of digital cables of shielding with skeleton structure.
Background technology
Along with the high speed development of data communication and information technology, the improving constantly of the fast development of network technology and computing power, people are also increasingly high to the comprehensive wiring system performance demands.From traditional audio frequency copper core pair twist local cable to today up to gigabit than local area network technology, along with network rate improves day by day, mean the raising of operating frequency, be easy to generate electromagnetic radiation and capacitive coupling more.Simultaneously; Can constantly there be new electromagnetic interference source to produce in the surrounding environment; The radiation of the high more generation of network work frequency is also serious more; And the equilibrium response of the non-shadow data cable of UTP has been not enough to offset the electromagnetic radiation and the extraneous electromagnetic interference (Electro Magnetic Compatibility in the time of only satisfying 30～40MHz transfer of data) of express network itself; Adopt shield technology can prevent effectively that then outside electromagnetic interference from getting into cable inner (skin effect of metal screen layer), stops the cable internal signal to external radiation (reflection effect of metal screen layer) simultaneously.Because the competition of each manufacturer is more and more fierce also, how to guarantee under the minimum prerequisite of manufacturing cost, to improve the first-time qualification rate of product, farthest improve and improve the performance of products index and seem particularly important.
The following technical scheme of prior art: adopt " ten " character skeleton of forming by translamella sheet and perpendicular blade; The said translamella sheet of " ten " character skeleton, perpendicular blade form the first, second, third and the 4th cavity thus; Said first strand coats the single face foil shielding layer outward and is positioned at said first cavity line; Said second strand coats the single face foil shielding layer outward and is positioned at said second cavity line; Said the 3rd strand coats the single face foil shielding layer outward and is positioned at said the 3rd cavity line, and said the 4th strand coats the single face foil shielding layer outward and is positioned at said the 4th cavity line.But under the high workload frequency, all there are defective in return loss (RL), characteristic impedance (Z0) and crosstalk attenuation performance.
Summary of the invention
The object of the invention provides a kind of 8 types of digital cables of shielding with skeleton structure, and 8 types of digital cables of this shielding have improved return loss, characteristic impedance and the crosstalk attenuation of 8 types of digital cables greatly; And because the formation of inner chamber shielding mode has reduced by every pair of phase-splitting shielding operation that line shields respectively, thereby has improved production efficiency.
For achieving the above object, the technical scheme that the present invention adopts is: a kind of 8 types of digital cables of shielding with skeleton structure comprise: eight copper conductors, all outer insulating layer coating of this copper conductor; Two copper conductors are formed first strand to line in said eight copper conductors, and two copper conductors are formed second strand to line; Two copper conductors are formed the 3rd strand to line; Two copper conductors are formed the 4th strand to line;
" ten " character skeleton of forming by translamella sheet and perpendicular blade; This " ten " character skeleton has the first, second, third and the 4th cavity that translamella sheet and perpendicular blade thus form; Said first strand is positioned at said first cavity to line; Said second strand is positioned at said second cavity to line, and said the 3rd strand is positioned at said the 3rd cavity to line, and said the 4th strand is positioned at said the 4th cavity to line;
Total screen that the surface has first aluminium foil layer coat said first strand to line, second strand to line, the 3rd strand to line, the 4th strand to line and " ten " character skeleton;
Flame retardant sheath layer is coated on said total screen surface; Said " ten " character skeleton is embedded with the two-sided aluminium strip skeleton of " ten " font of surface-coated second aluminium foil layer; The two-sided aluminium strip skeleton of this " ten " font is made up of horizontal aluminium strip and perpendicular aluminium strip; The length of this horizontal aluminium strip and perpendicular aluminium strip is all greater than the length of translamella sheet and perpendicular blade, thereby makes horizontal aluminium strip and perpendicular aluminium strip extend out and be connected to said total screen inner surface from said " ten " character skeleton end face in the end separately;
Said first aluminium foil layer is positioned at total screen inner surface, said horizontal aluminium strip and perpendicular aluminium strip separately the surface second aluminium foil layer therewith first aluminium foil layer electrically contact.
Further improved technical scheme in the technique scheme is following:
1. in the such scheme, the total screen of braiding that formed by some copper wires braidings is between said total screen and flame retardant sheath layer.
2. in the such scheme; Said horizontal aluminium strip and perpendicular aluminium strip length separately are 5.2 ± 0.02 mm; Said translamella sheet and perpendicular blade length separately are 5.0 ± 0.02 mm; Said horizontal aluminium strip and perpendicular aluminium strip thickness separately are 0.2 ± 0.01 mm, and said translamella sheet and perpendicular blade thickness separately are 0.7 ± 0.02 mm.
Because the technique scheme utilization, the present invention compared with prior art has advantage and effect:
1, the present invention shields 8 types of digital cables; In total screen, four new closed inner chamber shielding cavities have been formed; Add the shielding construction that total shielding of aluminium foil and woven shield form; It utilizes reflection, absorption and the skin effect of metal screen layer to realize preventing electromagnetic interference and electromagnetic radiation, prevents that effectively external electromagnetic interference from getting into cable, also stops internal signal to radiate simultaneously; Disturb the work of miscellaneous equipment, improved return loss, characteristic impedance and the crosstalk attenuation of 8 types of digital cables greatly; And, reduced the raw material input cost because the formation of inner chamber shielding mode has reduced by every pair of phase-splitting shielding operation that line shields respectively, thereby improved production efficiency; Be specially: return loss performance: >=36.0dB/100m, far above 23.0 dB/100m that stipulate in the normative reference, rich amount reaches 13 dB; Characteristic impedance (Z0) 1～100MHz:100 ± 5 Ω, 100～600MHz:100 ± 10 Ω, 600～1200MHz:100 ± 15 Ω, the stability of its characteristic impedance, be higher than far away stipulate in the normative reference 100 ± (15 Ω～40 Ω); Near-end fade performance (20 ℃): >=87.9dB/100m (during 1200MHz), 69.8 dB/100m (during 1200MHz) far above the normative reference regulation improve 18.1 dB than standard-required; Far-end fade performance (20 ℃): >=77.9dB/100m (during 1200MHz); Far above 46.3 dB/100m (during 1200MHz) of normative reference regulation, require to improve 31.6 dB than normative reference.
2, the present invention shields 8 types of digital cable production efficiencys than original (original mean pitch is 11.6mm) raising 40.5%, and twists right comprehensive Haul Rate and reduce by 2.6% than original (original mean pitch is 11.6mm), and raw material drop into corresponding reduction by 2.6% like this; And owing to the introducing of intracavity shielding construction, reduced the unit screen of every pair of line, obtained bigger room for promotion on the cost, through calculating, the integrated cost of patent of the present invention has reduced nearly 38% than original product.At last, the skeleton blade of the band aluminium strip layer of patent of the present invention can prevent cable in the process of twisting, because the instability of equipment tension force, and individual wire appears to running out of " ten " word cavity, cause properties of product defective.
Description of drawings
Accompanying drawing 1 is 8 types of digital cable structural representations of existing shielding;
Accompanying drawing 2 shields 8 types of digital cable structural representations for the present invention;
Accompanying drawing 3 is skeleton structure structural representation of the present invention;
Accompanying drawing 4 is shielding cavity structural representation of the present invention.
In the above accompanying drawing: 1, copper conductor; 2, insulating barrier; 3, first strand is to line; 4, second strand is to line; 5, the 3rd strand is to line; 6, the 4th strand is to line; 7, translamella sheet; 8, perpendicular blade; 9, " ten " character skeleton; 10, first aluminium foil layer; 11, total screen; 12, flame retardant sheath layer; 13, second aluminium foil layer; 14, the two-sided aluminium strip skeleton of " ten " font; 15, horizontal aluminium strip; 16, perpendicular aluminium strip; 17, weave total screen.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Embodiment: a kind of 8 types of digital cables of shielding with skeleton structure comprise: eight copper conductors 1, all outer insulating layer coating 2 of this copper conductor 1; Two copper conductors are formed first strand 3, two copper conductors of line are formed second strand to line 4 in said eight copper conductors 1; Two copper conductors are formed the 3rd strand to line 5; Two copper conductors are formed the 4th strand to line 6;
" ten " character skeleton 9 of forming by translamella sheet 7 and perpendicular blade 8; This " ten " character skeleton 9 has the first, second, third and the 4th cavity that translamella sheet thus 7 and perpendicular blade 8 form; Said first strand is positioned at said first cavity to line 3; Said second strand is positioned at said second cavity to line 4, and said the 3rd strand is positioned at said the 3rd cavity to line 5, and said the 4th strand is positioned at said the 4th cavity to line 6;
The surface has said first strand of total screen 11 coatings of first aluminium foil layer 10 line 3, second strand is twisted line 6 and " ten " character skeleton 9 line the 5, the 4th line 4, the 3rd strand;
Flame retardant sheath layer 12 is coated on said total screen 11 surfaces; Said " ten " character skeleton 9 is embedded with the two-sided aluminium strip skeleton 14 of " ten " font of surface-coated second aluminium foil layer 13; The two-sided aluminium strip skeleton 14 of this " ten " font is made up of with perpendicular aluminium strip 16 horizontal aluminium strip 15; The length of this horizontal aluminium strip 15 and perpendicular aluminium strip 16 is all greater than the length of translamella sheet 7 and perpendicular blade 8, thereby makes horizontal aluminium strip 15 and perpendicular aluminium strip 16 extend out and be connected to said total screen 11 inner surfaces from said " ten " character skeleton 9 end faces in the end separately;
Said first aluminium foil layer 10 is positioned at total screen 11 inner surfaces, said horizontal aluminium strip 15 and perpendicular aluminium strip 16 separately the surface second aluminium foil layer 13 therewith first aluminium foil layer 10 electrically contact.
The one total screen 17 of braiding that formed by the braiding of some copper wires is between said total screen 11 and flame retardant sheath layer 12.
Above-mentioned horizontal aluminium strip 15 is 5.2 ± 0.02 mm with perpendicular aluminium strip 16 length d 2 separately; Said translamella sheet 7 is 5.0 ± 0.02 mm with perpendicular blade 8 length d 1 separately; Said horizontal aluminium strip 15 is 0.2 ± 0.01 mm with perpendicular aluminium strip 16 thickness d 3 separately, and said translamella sheet 7 is 0.7 ± 0.02 mm with perpendicular blade 8 thickness d 4 separately.
When adopting above-mentioned 8 types of digital cables of shielding with skeleton structure; In total screen, four new closed inner chamber shielding cavities have been formed; Add the shielding construction that total shielding of aluminium foil and woven shield form; It utilizes reflection, absorption and the skin effect of metal screen layer to realize preventing electromagnetic interference and electromagnetic radiation, prevents that effectively external electromagnetic interference from getting into cable, also stops internal signal to radiate simultaneously; Disturb the work of miscellaneous equipment, improved return loss, characteristic impedance and the crosstalk attenuation of 8 types of digital cables greatly; And, reduced the raw material input cost because the formation of inner chamber shielding mode has reduced by every pair of phase-splitting shielding operation that line shields respectively, thereby improved production efficiency; Be specially: return loss performance: >=36.0dB/100m, far above 23.0 dB/100m that stipulate in the normative reference, rich amount reaches 13 dB; Characteristic impedance (Z0) 1～100MHz:100 ± 5 Ω, 100～600MHz:100 ± 10 Ω, 600～1200MHz:100 ± 15 Ω, the stability of its characteristic impedance, be higher than far away stipulate in the normative reference 100 ± (15 Ω～40 Ω); Near-end fade performance (20 ℃): >=87.9dB/100m (during 1200MHz), 69.8 dB/100m (during 1200MHz) far above the normative reference regulation improve 18.1 dB than standard-required; Far-end fade performance (20 ℃): >=77.9dB/100m (during 1200MHz); Far above 46.3 dB/100m (during 1200MHz) of normative reference regulation, require to improve 31.6 dB than normative reference; Secondly; 8 types of digital cable production efficiencys of present embodiment shielding improve 40.5% than original (original mean pitch is 11.6mm); And twist right comprehensive Haul Rate and reduce by 2.6% than original (original mean pitch is 11.6mm), raw material drop into corresponding reduction by 2.6% like this; And owing to the introducing of intracavity shielding construction, reduced the unit screen of every pair of line, obtained bigger room for promotion on the cost, through calculating, the integrated cost of patent of the present invention has reduced nearly 38% than original product.At last, the skeleton blade of the band aluminium strip layer of patent of the present invention can prevent cable in the process of twisting, because the instability of equipment tension force, and individual wire appears to running out of " ten " word cavity, cause properties of product defective.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (3)
1. 8 types of digital cables of shielding with skeleton structure is characterized in that: comprising: eight copper conductors (1), all outer insulating layer coating of this copper conductor (1) (2); Two copper conductors are formed first strand to line (3) in said eight copper conductors (1), and two copper conductors are formed second strand to line (4); Two copper conductors are formed the 3rd strand to line (5); Two copper conductors are formed the 4th strand to line (6);
" ten " character skeleton (9) of forming by translamella sheet (7) and perpendicular blade (8); This " ten " character skeleton (9) has the first, second, third and the 4th cavity that translamella sheet (7) and perpendicular blade (8) thus form; Said first strand is positioned at said first cavity to line (3); Said second strand is positioned at said second cavity to line (4), and said the 3rd strand is positioned at said the 3rd cavity to line (5), and said the 4th strand is positioned at said the 4th cavity to line (6);
The surface has said first strand of total screen (11) coating of first aluminium foil layer (10) line (3), second strand is twisted line (6) and " ten " character skeleton (9) line (5), the 4th line (4), the 3rd strand;
Flame retardant sheath layer (12) is coated on said total screen (11) surface; It is characterized in that: said " ten " character skeletons (9) are embedded with the two-sided aluminium strip skeleton of " ten " font (14) of surface-coated second aluminium foil layer (13); This two-sided aluminium strip skeleton of " ten " font (14) is made up of horizontal aluminium strip (15) and perpendicular aluminium strip (16); The length of this horizontal aluminium strip (15) and perpendicular aluminium strip (16) is all greater than the length of translamella sheet (7) and perpendicular blade (8), thereby makes horizontal aluminium strip (15) and perpendicular aluminium strip (16) extend out and be connected to said total screen (11) inner surface from said " ten " character skeletons (9) end face in the end separately;
Said first aluminium foil layer (10) is positioned at total screen (11) inner surface, said horizontal aluminium strip (15) and perpendicular aluminium strip (16) separately the surface second aluminium foil layer (13) therewith first aluminium foil layer (10) electrically contact.
2. 8 types of digital cables of shielding according to claim 1 is characterized in that: one weaves the total screen of braiding (17) that forms by some copper wires is positioned between said total screen (11) and the flame retardant sheath layer (12).
3. 8 types of digital cables of shielding according to claim 1; It is characterized in that: said horizontal aluminium strip (15) and perpendicular aluminium strip (16) length (d2) separately is 5.2 ± 0.02 mm; Said translamella sheet (7) and perpendicular blade (8) length (d1) separately is 5.0 ± 0.02 mm; Said horizontal aluminium strip (15) and perpendicular aluminium strip (16) thickness (d3) separately is 0.2 ± 0.01 mm, and said translamella sheet (7) and perpendicular blade (8) thickness (d4) separately is 0.7 ± 0.02 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104428908A CN102436873A (en) | 2011-12-27 | 2011-12-27 | Shield 8-class digital cable provided with skeleton structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104428908A CN102436873A (en) | 2011-12-27 | 2011-12-27 | Shield 8-class digital cable provided with skeleton structure |
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| Publication Number | Publication Date |
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| CN102436873A true CN102436873A (en) | 2012-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104428908A Pending CN102436873A (en) | 2011-12-27 | 2011-12-27 | Shield 8-class digital cable provided with skeleton structure |
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| CN (1) | CN102436873A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065719A (en) * | 2012-12-10 | 2013-04-24 | 浙江一舟电子科技股份有限公司 | Improvement structure with more than six types of cables |
| CN103971807A (en) * | 2014-04-24 | 2014-08-06 | 安徽徽宁电器仪表集团有限公司 | Rubber flexible cable |
| CN104021847A (en) * | 2014-06-26 | 2014-09-03 | 苏州胜信光电科技有限公司 | Data cable with internal isolating and shielding and production equipment thereof |
| CN104240838A (en) * | 2014-09-22 | 2014-12-24 | 华迅工业(苏州)有限公司 | Shielding eight-type symmetric data cable for Ethernet |
| CN106531341A (en) * | 2016-12-03 | 2017-03-22 | 安徽中润电缆集团股份有限公司 | Bending resisting multi-core antimagnetic shielding core |
| CN107230532A (en) * | 2016-03-25 | 2017-10-03 | 华迅工业(苏州)有限公司 | A kind of Ethernet CAT8 F/UTP symmetrical data cables |
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| US6566605B1 (en) * | 1995-09-15 | 2003-05-20 | Nexans | Multiple pair cable with individually shielded pairs that is easy to connect |
| JPH1153958A (en) * | 1997-07-29 | 1999-02-26 | Oki Densen Kk | Wideband pair type metallic cable |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065719A (en) * | 2012-12-10 | 2013-04-24 | 浙江一舟电子科技股份有限公司 | Improvement structure with more than six types of cables |
| CN103971807A (en) * | 2014-04-24 | 2014-08-06 | 安徽徽宁电器仪表集团有限公司 | Rubber flexible cable |
| CN104021847A (en) * | 2014-06-26 | 2014-09-03 | 苏州胜信光电科技有限公司 | Data cable with internal isolating and shielding and production equipment thereof |
| CN104021847B (en) * | 2014-06-26 | 2017-02-15 | 苏州胜信光电科技有限公司 | Data cable with internal isolating and shielding and production equipment thereof |
| CN104240838A (en) * | 2014-09-22 | 2014-12-24 | 华迅工业(苏州)有限公司 | Shielding eight-type symmetric data cable for Ethernet |
| CN107230532A (en) * | 2016-03-25 | 2017-10-03 | 华迅工业(苏州)有限公司 | A kind of Ethernet CAT8 F/UTP symmetrical data cables |
| CN106531341A (en) * | 2016-12-03 | 2017-03-22 | 安徽中润电缆集团股份有限公司 | Bending resisting multi-core antimagnetic shielding core |
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Application publication date: 20120502 |