CN203397763U - Bending-resistant four-pair digital communication cable - Google Patents
Bending-resistant four-pair digital communication cable Download PDFInfo
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- CN203397763U CN203397763U CN201320408497.1U CN201320408497U CN203397763U CN 203397763 U CN203397763 U CN 203397763U CN 201320408497 U CN201320408497 U CN 201320408497U CN 203397763 U CN203397763 U CN 203397763U
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Abstract
The utility model discloses a bending-resistant four-pair digital communication cable which comprises four twisted pairs, and a cross skeleton which comprises first, second, third and fourth cavities formed by the later blade and the vertical blade. The four twisted pairs are in the four cavities respectively. The surfaces of the four twisted pairs are each wrapped by an aluminum foil shielding layer longitudinally, and a polyester band wraps the first, second, third and fourth twisted pairs and the external surface of the cross skeleton. The external surface of the polyester band is wrapped up by an aluminum foil shielding layer, and a plurality of cotton threads are filled between the polyester band and the four twisted pairs and the cross skeleton. The external surface of the aluminum foil shielding layer is wrapped up by an inner sheath layer, and the external surface of the inner sheath layer is wrapped up by an oversheath layer. The bending-resistant four-pair digital communication cable improves tensile strength, reduces the echo losses of eight types of digital cables, and attenuation of characteristic impedance and crosstalk.
Description
Technical field
The utility model relates to 8 class digital cable fields, is specifically related to a kind of counter-bending four demand pairs word communications cables.
Background technology
The fast development of network technology, people are also more and more higher to the requirement of comprehensive wiring system performance.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, more easily produce electromagnetic radiation and capacitive coupling.Simultaneously, in surrounding environment, can constantly there is new electromagnetic interference source to produce, the radiation of the higher generation of network operating frequency is also more serious, and the equilibrium response of the non-shadow data cable of UTP has been not enough to offset electromagnetic radiation and the extraneous electromagnetic interference (Electro Magnetic Compatibility in the time of only meeting 30～40MHz transfer of data) of express network itself, adopt shield technology can effectively prevent that outside electromagnetic interference from entering cable inside (skin effect of metal screen layer), stop cable internal signal to external radiation (reflection effect of metal screen layer) simultaneously.Because the competition of each manufacturer is also more and more fierce, how to guarantee, under the minimum prerequisite of manufacturing cost, to improve the first-time qualification rate of product, the performance index that farthest improve and improve product seem particularly important.
Utility model content
The utility model object is to provide a kind of counter-bending four demand pairs word communications cables, when these counter-bending four demand pairs word communications cables have improved tensile strength, has also greatly improved return loss, characteristic impedance and the crosstalk attenuation of 8 class digital cables; And owing to forming four inner chambers, reduced by every pair of phase-splitting shielding operation that line shields respectively, thereby improved production efficiency.
For achieving the above object, the technical solution adopted in the utility model is: a kind of counter-bending four demand pairs word communications cables, comprising: eight copper conductors, and this copper conductor is outer insulating layer coating all; In described eight copper conductors, two copper conductors form the first strand to line, and two copper conductors form the second strand to line; Two copper conductors form the 3rd strand to line; Two copper conductors form the 4th strand to line;
" ten " character skeleton being formed 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 form thus, described the first strand is positioned at described the first cavity to line, described the second strand is positioned at described the second cavity to line, described the 3rd strand is positioned at described the 3rd cavity to line, and described the 4th strand is positioned at described the 4th cavity to line;
Described the first strand is 15 ~ 15.5mm to the pitch of line, and described the second strand is 13.5 ~ 13.9mm to the pitch of line, and described the 3rd strand is 14.2 ~ 14.6mm to the pitch of line, and described the 4th strand is 12.7 ~ 13.1mm to the pitch of line;
Described the first strand to line, the second strand to line, the 3rd strand to line, the 4th strand to the line equal vertical foil shielding layer that is surrounded by of outer surface separately;
One polyester belt is wrapped to twist line and " ten " character skeleton outer surface line, the 4th line, the 3rd strand line, the second strand in described the first strand;
Described polyester belt and described the first strand are twisted being filled with some cotton threads between line and " ten " character skeleton line, the 4th line, the 3rd strand line, the second strand;
One foil shielding layer is coated on described polyester belt outer surface;
One inner restrictive coating is coated on described foil shielding layer outer surface;
One external sheath layer is coated on described inner restrictive coating outer surface.
Further improved technical scheme in technique scheme is as follows:
1. in such scheme, described the first strand is 15.2mm to the pitch of line, and described the second strand is 13.7mm to the pitch of line, and described the 3rd strand is 14.5mm to the pitch of line, and described the 4th strand is 13mm to the pitch of line.
2. in such scheme, described translamella sheet and perpendicular blade length are separately 5.5 ~ 6mm.
3. in such scheme, described translamella sheet and perpendicular blade thickness are separately 0.75 ~ 0.8 mm.
Because technique scheme is used, the utility model compared with prior art has following advantages and effect:
The counter-bending four demand pairs word communications cables of the utility model, formed four new closed inner chamber shielding cavities and first strand to the pitch of line, be 15 ~ 15.5mm, described the second strand is 13.5 ~ 13.9mm to the pitch of line, described the 3rd strand is 14.2 ~ 14.6mm to the pitch of line, described the 4th strand is 12.7 ~ 13.1mm to the pitch of line, it utilizes reflection, absorption and skin effect realize and prevent electromagnetic interference and electromagnetic radiation, effectively prevent that external electromagnetic interference from entering cable, also stop internal signal to radiate simultaneously, disturb the work of miscellaneous equipment, improved greatly the return loss of 8 class digital cables, characteristic impedance and crosstalk attenuation, and due to the formation of inner chamber shielding mode, reduced by every pair of phase-splitting shielding operation that line shields respectively, thereby improved production efficiency, reduced raw material input cost.
Accompanying drawing explanation
Accompanying drawing 1 is the counter-bending four demand pairs word communications cable structural representations of the utility model.
In above accompanying drawing: 1, copper conductor; 2, insulating barrier; 3, the first strand is to line; 4, the 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, polyester belt; 11, foil shielding layer; 12, inner restrictive coating; 13, external sheath layer; 14, foil shielding layer; 15, cotton thread.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment: a kind of counter-bending four demand pairs word communications cables, comprising: eight copper conductors 1, this copper conductor 1 is outer insulating layer coating 2 all; In described eight copper conductors 1, two copper conductors form the first strand 3, two copper conductors of line are formed to the second strand to line 4; Two copper conductors form the 3rd strand to line 5; Two copper conductors form the 4th strand to line 6;
" ten " character skeleton 9 being formed 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 forms thus, described the first strand is positioned at described the first cavity to line 3, described the second strand is positioned at described the second cavity to line 4, described the 3rd strand is positioned at described the 3rd cavity to line 5, and described the 4th strand is positioned at described the 4th cavity to line 6;
Described the first strand is 15 ~ 15.5mm to the pitch of line 3, and described the second strand is 13.5 ~ 13.9mm to the pitch of line 4, and described the 3rd strand is 14.2 ~ 14.6mm to the pitch of line 5, and described the 4th strand is 12.7 ~ 13.1mm to the pitch of line 6;
Described the first strand to line 3, the second strand to line 4, the 3rd strand to line 5, the 4th strand to the line 6 equal vertical foil shielding layer 14 that is surrounded by of outer surface separately;
One polyester belt 10 is wrapped to twist line 6 and " ten " character skeleton 9 outer surfaces line 5, the 4th line 4, the 3rd strand line 3, the second strand in described the first strand;
Described polyester belt 10 and described the first strand are twisted being filled with some cotton threads 15 between line 6 and " ten " character skeleton 9 line 5, the 4th line 4, the 3rd strand line 3, the second strand;
One foil shielding layer 11 is coated on described polyester belt 10 outer surfaces;
One inner restrictive coating 12 is coated on described foil shielding layer 11 outer surfaces;
One external sheath layer 13 is coated on described inner restrictive coating 12 outer surfaces.
Above-mentioned the first strand is 15.2mm to the pitch of line 3, and described the second strand is 13.7mm to the pitch of line 4, and described the 3rd strand is 14.5mm to the pitch of line 5, and described the 4th strand is 13mm to the pitch of line 6.
Above-mentioned translamella sheet 7 and perpendicular blade 8 length d 1 is separately 5.5 ~ 6mm.
Above-mentioned translamella sheet 7 and perpendicular blade 8 thickness d 4 is separately 0.75 ~ 0.8 mm.
While adopting the above-mentioned counter-bending four demand pairs word communications cable, formed four new closed inner chamber shielding cavities and first strand to the pitch of line, be 15 ~ 15.5mm, described the second strand is 13.5 ~ 13.9mm to the pitch of line, described the 3rd strand is 14.2 ~ 14.6mm to the pitch of line, described the 4th strand is 12.7 ~ 13.1mm to the pitch of line, it utilizes reflection, absorption and skin effect realize and prevent electromagnetic interference and electromagnetic radiation, effectively prevent that external electromagnetic interference from entering cable, also stop internal signal to radiate simultaneously, disturb the work of miscellaneous equipment, improved greatly the return loss of 8 class digital cables, characteristic impedance and crosstalk attenuation, and due to the formation of inner chamber shielding mode, reduced by every pair of phase-splitting shielding operation that line shields respectively, thereby improved production efficiency, reduced raw material input cost, be specially: return loss performance: >=36.0dB/100m, far above 23.0 dB/100m that stipulate in 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, far away higher than 100 ± (15 Ω～40 Ω) stipulating in normative reference, near-end fade performance (20 ℃): during >=87.9dB/100m(1200MHz), during far above 69.8 dB/100m(1200MHz of normative reference regulation), than standard-required, improve 18.1 dB, far-end fade performance (20 ℃): during >=77.9dB/100m(1200MHz), during far above 46.3 dB/100m(1200MHz of normative reference regulation), than normative reference, require to improve 31.6 dB, secondly, restrictive coating is comprised of inner restrictive coating and the external sheath layer that is positioned at its outer surface, has very large tensile strength, improves the useful life of cable.
Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection range of the present utility model.
Claims (4)
1. counter-bending four demand pairs word communications cables, is characterized in that: comprising: eight copper conductors (1), and this copper conductor (1) is outer insulating layer coating (2) all; In described eight copper conductors (1), two copper conductors form the first strand to line (3), and two copper conductors form the second strand to line (4); Two copper conductors form the 3rd strand to line (5); Two copper conductors form the 4th strand to line (6);
" ten " character skeleton (9) being formed 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) form thus, described the first strand is positioned at described the first cavity to line (3), described the second strand is positioned at described the second cavity to line (4), described the 3rd strand is positioned at described the 3rd cavity to line (5), and described the 4th strand is positioned at described the 4th cavity to line (6);
Described the first strand is 15 ~ 15.5mm to the pitch of line (3), and described the second strand is 13.5 ~ 13.9mm to the pitch of line (4), and described the 3rd strand is 14.2 ~ 14.6mm to the pitch of line (5), and described the 4th strand is 12.7 ~ 13.1mm to the pitch of line (6);
Described the first strand to line (3), the second strand to line (4), the 3rd strand to line (5), the 4th strand to line (6) the equal vertical foil shielding layer (14) that is surrounded by of outer surface separately;
One polyester belt (10) is wrapped to twist line (6) and " ten " character skeleton (9) outer surface line (5), the 4th line (4), the 3rd strand line (3), the second strand in described the first strand;
Described polyester belt (10) and described the first strand are twisted being filled with some cotton threads (15) between line (6) and " ten " character skeleton (9) line (5), the 4th line (4), the 3rd strand line (3), the second strand;
One foil shielding layer (11) is coated on described polyester belt (10) outer surface;
One inner restrictive coating (12) is coated on described foil shielding layer (11) outer surface;
One external sheath layer (13) is coated on described inner restrictive coating (12) outer surface.
2. the counter-bending four demand pairs word communications cables according to claim 1, it is characterized in that: described the first strand is 15.2mm to the pitch of line (3), described the second strand is 13.7mm to the pitch of line (4), described the 3rd strand is 14.5mm to the pitch of line (5), and described the 4th strand is 13mm to the pitch of line (6).
3. the counter-bending four demand pairs word communications cables according to claim 1, is characterized in that: described translamella sheet (7) and perpendicular blade (8) length are separately 5.5 ~ 6mm.
4. the counter-bending four demand pairs word communications cables according to claim 1, is characterized in that: described translamella sheet (7) and perpendicular blade (8) thickness are separately 0.75 ~ 0.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320408497.1U CN203397763U (en) | 2013-07-10 | 2013-07-10 | Bending-resistant four-pair digital communication cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320408497.1U CN203397763U (en) | 2013-07-10 | 2013-07-10 | Bending-resistant four-pair digital communication cable |
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| Publication Number | Publication Date |
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| CN203397763U true CN203397763U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320408497.1U Expired - Lifetime CN203397763U (en) | 2013-07-10 | 2013-07-10 | Bending-resistant four-pair digital communication cable |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887011A (en) * | 2014-03-21 | 2014-06-25 | 浙江一舟电子科技股份有限公司 | Large-pair-number shielding cable |
| CN104064277A (en) * | 2014-06-30 | 2014-09-24 | 江苏亨通线缆科技有限公司 | Anti-electromagnetic interference network cable |
| CN104183332A (en) * | 2014-05-22 | 2014-12-03 | 中国科学院城市环境研究所 | Composite material shielding power cable |
| CN105355317A (en) * | 2015-12-08 | 2016-02-24 | 浙江兆龙线缆有限公司 | Line pair shielding mechanism of CAT8 line shielding structure |
-
2013
- 2013-07-10 CN CN201320408497.1U patent/CN203397763U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887011A (en) * | 2014-03-21 | 2014-06-25 | 浙江一舟电子科技股份有限公司 | Large-pair-number shielding cable |
| CN103887011B (en) * | 2014-03-21 | 2016-09-21 | 浙江一舟电子科技股份有限公司 | A kind of big logarithm shielded cable |
| CN104183332A (en) * | 2014-05-22 | 2014-12-03 | 中国科学院城市环境研究所 | Composite material shielding power cable |
| CN104064277A (en) * | 2014-06-30 | 2014-09-24 | 江苏亨通线缆科技有限公司 | Anti-electromagnetic interference network cable |
| CN104064277B (en) * | 2014-06-30 | 2016-06-01 | 江苏亨通线缆科技有限公司 | Electromagnetism interference network cable |
| CN105355317A (en) * | 2015-12-08 | 2016-02-24 | 浙江兆龙线缆有限公司 | Line pair shielding mechanism of CAT8 line shielding structure |
| CN105355317B (en) * | 2015-12-08 | 2017-08-29 | 浙江兆龙线缆有限公司 | The line of eight class line shielding constructions is to shielding body |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |