CN105355317A - Line pair shielding mechanism of CAT8 line shielding structure - Google Patents
Line pair shielding mechanism of CAT8 line shielding structure Download PDFInfo
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- CN105355317A CN105355317A CN201510893592.9A CN201510893592A CN105355317A CN 105355317 A CN105355317 A CN 105355317A CN 201510893592 A CN201510893592 A CN 201510893592A CN 105355317 A CN105355317 A CN 105355317A
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Abstract
The invention belongs to the cable appliance technology field, and particularly relates to a line pair shielding mechanism of a CAT8 line shielding structure. The invention discloses a line pair shielding mechanism of the CAT8 line shielding structure, and the line pair shielding mechanism comprises four line pairs; the four line pairs are distributed and installed in the form of a pairing structure; each line pair comprises two single-wire conductors and the outside of each single-wire conductor is wrapped with an insulating layer; the outside of each line pair is wrapped with an aluminum foil in a winding and wrapping way, making the aluminum foil clad along the pairing structure of the line pairs; and a hot melt aluminum foil band is additionally disposed outside each aluminum foil. The beneficial effects of the present invention are that the line pair internal signal leakage is reduced to the minimum degree, so that the signal integrity is guaranteed; the aluminum foils and the line pairs are adhered to each other more tightly; the stability of the line pair structure is raised; and the probability of generating a signal peak value is reduced.
Description
Technical field
The invention belongs to cable apparatus technical field, particularly relate to a kind of line of eight class line shielding constructions to shielding body.
Background technology
At conventional line in shielded cable, aluminum foil shielded mode is generally based on vertical bag, but this structural design, be applicable to the product of below 1GHz.Due to vertical pack arrangement, the shaping rear neither one external force of aluminium foil makes it fix, therefore aluminium foil has the release of a power after shaping, healing up of aluminium foil is easily stuck up out, when signal frequency reaches more than 1GHz, suitable short of wavelength, to such an extent as to the screen of vertical pack arrangement heals up, gap has been enough to more than 1GHz signal wavelength and has passed, signals leakiness is caused to be formed, the distortion of signal.CAT8 test frequency reaches 2GHz, and the aluminium foil of traditional vertical packet mode is coated, and the signal wavelength of 2GHz has been enough to healing up through aluminium foil under vertical packet mode, causes signals leakiness, and signal produces spike.
Summary of the invention
The object of the invention is to solve above-described technical problem, a kind of gap that heals up making aluminium foil coated is provided to reduce to minimum, the internal leakage signal of line is made to be reduced to minimum degree, ensure the integrality of signal, make aluminium foil and line tightr to laminating, improve the stability of line to structure, reduce the line of eight class line shielding constructions of the probability that signal peak produces to shielding body, its technical scheme is as follows:
The line of eight class line shielding constructions is to shielding body, it is characterized in that, the line of eight described class line shielding constructions comprises four groups of lines pair to shielding body, four groups of described lines are arranged in pair twist structure distribution, the line often organized is to comprising two single line conductors, and each single line conductor outer wrap has insulating barrier, and the outside often organizing line right adopts wrapped mode to be coated with aluminium foil, make aluminium foil coated along the pair twist structure that line is right, aluminium foil outside is equipped with one deck hot melt aluminium foil band.
Optimal way is, described insulating barrier comprises internal layer, intermediate layer and skin, and described internal layer is linea low density PE layer, and internal layer contacts with single line conductor, and described intermediate layer is foaming structure layer, and described skin is high density PE layer.
Optimal way is, described aluminium foil adopts that bilayer is oppositely wrapped is often organizing line to outside.
The line of eight class line shielding constructions provided by the invention is to shielding body, and in order to ensure the qualified of cross-talk, 4 groups of lines to the structure adopting pair twist, and in order to ensure minimizing of electromagnetic interference influence between line pair, use aluminum foil shielded structure; And in order to the joint gap making aluminium foil coated little as far as possible, then adopt the coated aluminium foil of wrapped mode, make aluminium foil along line to coated tight of pair twist structure, the Duplication of aluminium foil reaches more than 40% in addition; At aluminium foil additional one deck hot melt aluminium foil band, the clad structure of aluminium foil can be fixed, deformation can not be produced because of follow-up operation, and the gap that internal layer aluminium foil heals up is capped completely, the leakage of line to signal is reduced at utmost.
The present invention further have employed the single line structure of skin foam skin to insulating barrier: the internal layer (endothelium) of insulating barrier adopts linea low density PE to improve insulation and the adhesive force of single line conductor on the one hand, makes the structure of following process conductor and insulation more stable; The intermediate layer of insulating barrier adopts foaming structure to reduce the dielectric constant of insulation on the one hand, reduces the decay of signal; The skin (crust) of insulation is high density PE on the one hand, improves the anti-pressure ability of single line, the single line conductor distortion preventing the pressure of subsequent handling from causing.
The further line of the present invention adopts wrapped pattern to shielding: make aluminium foil and line to laminating more closely, improve the stability of line to structure, reduce the probability that signal peak produces.
The further line of the present invention uses double-deck reverse wrapped aluminium foil to shielding construction: the possibility of leakage signal is dropped to minimum level, greatly improves the index of NEXT.
The invention has the beneficial effects as follows: the gap that heals up making aluminium foil coated reduces to minimum, make the internal leakage signal of line be reduced to minimum degree, ensure the integrality of signal, make aluminium foil and line tightr to laminating, improve the stability of line to structure, reduce the probability that signal peak produces.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of eight class line shielding constructions.
Fig. 2 is the schematic diagram of insulating barrier.
Fig. 3 is schematic diagram of the present invention.
Embodiment
Embodiment is illustrated below in conjunction with Fig. 1 to Fig. 3:
As shown in Figure 1 to Figure 3, eight class line shielding constructions, eight described class line shielding constructions comprise four groups of lines to 1, four groups of described lines are arranged in pair twist structure distribution 1, the line often organized comprises two single line conductors 2 to 1, and each single line conductor 2 outer wrap has insulating barrier 3, often organize line to 1 outside adopt wrapped mode to be coated with aluminium foil 4, make aluminium foil 4 coated to the pair twist structure of 1 along line, aluminium foil 4 outside is equipped with one deck hot melt aluminium foil band 5; Four groups of described lines are wrapped up by braid 61, and the outside of described braid 6 is provided with one deck sheath 7.
Optimal way is, described insulating barrier 3 comprises internal layer 31, intermediate layer 32 and outer 33, and described internal layer 31 is linea low density PE layer, and internal layer 31 contacts with single line conductor 2, and described intermediate layer 32 is foaming structure layer, and described skin 33 is high density PE layer.
Optimal way is, described aluminium foil adopts that bilayer is oppositely wrapped is often organizing line to outside.
Optimal way is, described braid is tinned copper braid.
Reach 2GHz for CAT8 test frequency, the aluminium foil of traditional vertical packet mode is coated, and the signal wavelength of 2GHz has been enough to healing up through aluminium foil under vertical packet mode, causes signals leakiness, and signal produces spike.Therefore we reduce the coated size of healing up of aluminium foil as much as possible.The mode that aluminium foil is coated, change into wrapped from vertical bag, make the structure of aluminium foil and twisted pair wire more fit like this, heal up and will diminish.In addition structurally, then outside aluminium foil, increase one deck self-adhesion aluminium foil strip hot in nature, the structure making aluminium foil coated is on the one hand more stable, and aluminium foil heals up also can not produce deformation in subsequent handling; On the other hand internal layer aluminium foil is healed up to be completely covered, to make the internal leakage signal of line be reduced to minimum degree.Consider effectiveness, the additional tin-coated copper braid shielded of cable core, form the data cable structure of S/FTP structure.
In order to ensure the qualified of cross-talk, 4 groups of lines to the structure adopting pair twist, and in order to ensure minimizing of electromagnetic interference influence between line pair, use aluminum foil shielded structure; And in order to the joint gap making aluminium foil coated little as far as possible, then adopt the coated aluminium foil of wrapped mode, make aluminium foil along line to coated tight of pair twist structure, the Duplication of aluminium foil reaches more than 40% in addition; At aluminium foil additional one deck hot melt aluminium foil band, the clad structure of aluminium foil can be fixed, deformation can not be produced because of follow-up operation, and the gap that internal layer aluminium foil heals up is capped completely, make the leakage of line to signal be reduced at utmost; Prevent outside electromagnetic interference, adopt total shielding construction, select tin-coated copper braided overall-shielding, shielding rate >=60%, obtain the maximization of anti-electromagnetic interference effect, last cable core squeezes the outer quilt of one deck outward, protection cable.
Claims (3)
1. the line of eight class line shielding constructions is to shielding body, it is characterized in that, the line of eight described class line shielding constructions comprises four groups of lines pair to shielding body, four groups of described lines are arranged in pair twist structure distribution, the line often organized is to comprising two single line conductors, and each single line conductor outer wrap has insulating barrier, and the outside often organizing line right adopts wrapped mode to be coated with aluminium foil, make aluminium foil coated along the pair twist structure that line is right, aluminium foil outside is equipped with one deck hot melt aluminium foil band.
2. the line of eight class line shielding constructions as claimed in claim 1 is to shielding body, it is characterized in that, described insulating barrier comprises internal layer, intermediate layer and skin, described internal layer is linea low density PE layer, internal layer contacts with single line conductor, described intermediate layer is foaming structure layer, and described skin is high density PE layer.
3. the line of eight class line shielding constructions as claimed in claim 1 is to shielding body, it is characterized in that, described aluminium foil adopts that bilayer is oppositely wrapped is often organizing line to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510893592.9A CN105355317B (en) | 2015-12-08 | 2015-12-08 | The line of eight class line shielding constructions is to shielding body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510893592.9A CN105355317B (en) | 2015-12-08 | 2015-12-08 | The line of eight class line shielding constructions is to shielding body |
Publications (2)
| Publication Number | Publication Date |
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| CN105355317A true CN105355317A (en) | 2016-02-24 |
| CN105355317B CN105355317B (en) | 2017-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510893592.9A Active CN105355317B (en) | 2015-12-08 | 2015-12-08 | The line of eight class line shielding constructions is to shielding body |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201359878Y (en) * | 2009-01-13 | 2009-12-09 | 昆山信昌电线电缆有限公司 | Symmetric paralleled network cable |
| CN201655414U (en) * | 2010-05-10 | 2010-11-24 | 天津亿鑫通科技股份有限公司 | Multicore 3G communication cable |
| CN102231303A (en) * | 2011-04-19 | 2011-11-02 | 江苏通鼎光电科技有限公司 | Shielding digital communication cable |
| CN103474166A (en) * | 2013-08-23 | 2013-12-25 | 安徽埃克森科技集团有限公司 | Cable for high voltage Ethernet |
| CN203397763U (en) * | 2013-07-10 | 2014-01-15 | 江苏亨通线缆科技有限公司 | Bending-resistant four-pair digital communication cable |
| CN205230657U (en) * | 2015-12-08 | 2016-05-11 | 浙江兆龙线缆有限公司 | Eight types of line shielding structure's wire pair shielding body |
-
2015
- 2015-12-08 CN CN201510893592.9A patent/CN105355317B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201359878Y (en) * | 2009-01-13 | 2009-12-09 | 昆山信昌电线电缆有限公司 | Symmetric paralleled network cable |
| CN201655414U (en) * | 2010-05-10 | 2010-11-24 | 天津亿鑫通科技股份有限公司 | Multicore 3G communication cable |
| CN102231303A (en) * | 2011-04-19 | 2011-11-02 | 江苏通鼎光电科技有限公司 | Shielding digital communication cable |
| CN203397763U (en) * | 2013-07-10 | 2014-01-15 | 江苏亨通线缆科技有限公司 | Bending-resistant four-pair digital communication cable |
| CN103474166A (en) * | 2013-08-23 | 2013-12-25 | 安徽埃克森科技集团有限公司 | Cable for high voltage Ethernet |
| CN205230657U (en) * | 2015-12-08 | 2016-05-11 | 浙江兆龙线缆有限公司 | Eight types of line shielding structure's wire pair shielding body |
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| Publication number | Publication date |
|---|---|
| CN105355317B (en) | 2017-08-29 |
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| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: Shilin Industrial Zone 313215 Zhejiang province Huzhou city Deqing County town Patentee after: Zhejiang megabon interconnect Polytron Technologies Inc Address before: Shilin Industrial Zone 313200 Zhejiang province Huzhou city Deqing County town Zhejiang Zhaolong Cable Co. Ltd. Patentee before: Zhejiang Zhaolong Cable Co., Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Line pair shielding mechanism of CAT8 line shielding structure Effective date of registration: 20180326 Granted publication date: 20170829 Pledgee: Zhejiang Deqing rural commercial bank Limited by Share Ltd Pledgor: Zhejiang megabon interconnect Polytron Technologies Inc Registration number: 2018980000046 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200410 Granted publication date: 20170829 Pledgee: Zhejiang Deqing rural commercial bank Limited by Share Ltd Pledgor: ZHEJIANG ZHAOLONG INTERCONNECTION TECHNOLOGY Co.,Ltd. Registration number: 2018980000046 |