CN203444860U - Low-loss shielding category-8 digital communication cable - Google Patents
Low-loss shielding category-8 digital communication cable Download PDFInfo
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- CN203444860U CN203444860U CN201320409555.2U CN201320409555U CN203444860U CN 203444860 U CN203444860 U CN 203444860U CN 201320409555 U CN201320409555 U CN 201320409555U CN 203444860 U CN203444860 U CN 203444860U
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Abstract
The utility model discloses a low-loss shielding category-8 digital communication cable. The low-loss shielding category-8 digital communication cable includes four twisted wires and a cross-shaped skeleton composed by a transverse blade and a vertical blade, and the cross-shaped skeleton has four cavities formed by the transverse blade and the vertical blade. A first twisted wire is placed in a first cavity, a second twisted wire is placed in a second cavity, a third twisted wire is placed in a third cavity, and a fourth twisted wire is placed in a fourth cavity. An aluminum foil shielding layer wraps the outer surfaces of the first twisted wire, the second twisted wire, the third twisted wire, the fourth twisted wire and the cross-shaped skeleton. An inner sheath layer wraps the outer surface of the aluminum foil shielding layer, an outer sheath layer wraps the outer surface of the inner sheath layer, and a metal braiding layer is arranged between the inner sheath layer and the outer sheath layer. According to the low-loss shielding category-8 digital communication cable, return loss, characteristic impedance and crosstalk attenuation of the category-8 digital cable are greatly improved, and split-phase shielding processes for respectively shielding each pair of wires are reduced so as to raise the production efficiency.
Description
Technical field
The utility model relates to 8 class digital cable fields, is specifically related to a kind of low-loss shield type 8 class digital communication cables.
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 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 low-loss shield type 8 class digital communication cables, and these shield type 8 class digital communication cables have improved return loss, characteristic impedance and the crosstalk attenuation of 8 class digital cables greatly; 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 low-loss shield type 8 class digital communication 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;
One foil shielding layer is coated on described the first strand line, the second strand is twisted line and " ten " character skeleton outer surface line, the 4th line, the 3rd strand;
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, and a wire sheathing is between described inner restrictive coating and external sheath layer.
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:
1. the utility model low-loss shield type 8 class digital communication cables, 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.
2. the utility model low-loss shield type 8 class digital communication cables, its 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, one wire sheathing is between described inner restrictive coating and external sheath layer and due to the introducing of intracavity shielding construction, reduced by every pair of unit screen that line is right, on cost, obtained larger room for promotion, through calculating, the integrated cost of capital and interest has reduced nearly 38% than original product.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model low-loss shield type 8 class digital communication cable structure schematic diagrames;
Accompanying drawing 2 is the utility model " ten " character skeleton structural representation.
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, wire sheathing; 11, foil shielding layer; 12, inner restrictive coating; 13, external sheath layer.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment: a kind of low-loss shield type 8 class digital communication 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;
One foil shielding layer 11 is coated on described the first strand line 3, the second strand is twisted line 6 and " ten " character skeleton 9 outer surfaces line 5, the 4th line 4, the 3rd strand;
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, and a wire sheathing 10 is between described inner restrictive coating 12 and external sheath layer 13.
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 above-mentioned low-loss shield type 8 class digital communication 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, secondly, low-loss shield type 8 class digital communication cables, its 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, one wire sheathing, between described inner restrictive coating and external sheath layer and due to the introducing of intracavity shielding construction, has reduced by every pair of unit screen that line is right, has obtained larger room for promotion on cost, through calculating, the integrated cost of capital and interest has reduced nearly 38% than original product.
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. low-loss shield type 8 class digital communication 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);
One foil shielding layer (11) is coated on described the first strand line (3), the second strand is twisted line (6) and " ten " character skeleton (9) outer surface line (5), the 4th line (4), the 3rd strand;
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, and a wire sheathing (10) is positioned between described inner restrictive coating (12) and external sheath layer (13).
2. low-loss shield type 8 class digital communication 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. low-loss shield type 8 class digital communication cables according to claim 1, is characterized in that: described translamella sheet (7) and perpendicular blade (8) length are separately 5.5 ~ 6mm.
4. low-loss shield type 8 class digital communication 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 |
|---|---|---|---|
| CN201320409555.2U CN203444860U (en) | 2013-07-10 | 2013-07-10 | Low-loss shielding category-8 digital communication cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320409555.2U CN203444860U (en) | 2013-07-10 | 2013-07-10 | Low-loss shielding category-8 digital communication cable |
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| Publication Number | Publication Date |
|---|---|
| CN203444860U true CN203444860U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320409555.2U Expired - Lifetime CN203444860U (en) | 2013-07-10 | 2013-07-10 | Low-loss shielding category-8 digital communication cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971820A (en) * | 2014-04-24 | 2014-08-06 | 安徽徽宁电器仪表集团有限公司 | Communication cable |
-
2013
- 2013-07-10 CN CN201320409555.2U patent/CN203444860U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971820A (en) * | 2014-04-24 | 2014-08-06 | 安徽徽宁电器仪表集团有限公司 | Communication cable |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140219 |
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| CX01 | Expiry of patent term |