CN201984899U - Multilayer shielding 7-category data cable - Google Patents
Multilayer shielding 7-category data cable Download PDFInfo
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- CN201984899U CN201984899U CN2010206867281U CN201020686728U CN201984899U CN 201984899 U CN201984899 U CN 201984899U CN 2010206867281 U CN2010206867281 U CN 2010206867281U CN 201020686728 U CN201020686728 U CN 201020686728U CN 201984899 U CN201984899 U CN 201984899U
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Abstract
The utility model relates to a data cable in the electronic information technology field, in particular to a data cable with high-shielding performance and used for the high-speed transmission of super-capacity audio-frequency, video-frequency, images, and other data signals, and provides a multilayer shielding 7-category data cable. The data cable comprises a PVC protective layer, a main shielding layer and four groups of line pairs, wherein the PVC protective layer is arranged on the outer layer of the data cable, the main shielding layer is arranged inside the PVC protective layer, a tearing rope is arranged between the main shielding layer and the PVC protective layer, the four groups of line pairs are arranged in the main shielding layer, and each group of line pairs comprises two conducting wires and a slave shielding layer wrapping the two conducting wires, further each conducting wire comprises a copper conductor, a first solid PE (Poly Ethylene) insulation layer, a high physical foaming layer and a second solid PE insulation layer from the inside out sequentially. The data cable provided by the utility model effectively reduces loss of signals transmitted in conductors and improves integral anti-electromagnetic interference and signal crosstalk performance of the data cable.
Description
Technical field
The utility model relates to the data cable of electronic information technical field, relates in particular to the multiple shield high-performance data cable of the high-speed transfer of data-signals such as the audio frequency that is used for vast capacity, video, image.
Background technology
Along with the continuous development of information network, information communication is more and more frequent, and the information exchange capacity is also increasing.Data cable is the important transmission medium of the network information, is faced with new technological change and innovation, will improve transmission rate on the one hand, satisfies the transmission and the exchange of big capacity information, will improve transmission stability on the other hand, guarantees the quality of message transmission.
Ethernet came out over more than 30 year, network transmission speed has improved nearly thousand times, FDX Ethernet (10Mbps), 100 m ethernet (100Mbps), 802.3u Fast Ethernet (1000Mbps) have been experienced, ten thousand mbit ethernets (10Gbps) till now, also will develop to 100,000 mbit ethernets (100Gbps) future.From present information transmission technology development, ten thousand mbit ethernets will be the direction and the trend of the networking coming years, and the demand that is fit to the high-speed data transmission cable of ten thousand mbit ethernets in the coming five years increases fast.
The development of the research and development of data cable and manufacturing and Ethernet synchronously, manufacturer releases 3 classes (10Mbps), 5 classes (100Mbps) surpass five classes and 6 classes (1000Mbps), for information network construction and upgrading play an important role.For adapting to the application of ten thousand mbit ethernets, converge and group system as high-speed data communication network, data center, the networking of vast capacity storage, financial transaction system, the supercomputing of government, medical health field and university research system, and have higher requirement to the shielding properties of data cable in fields such as the very high military affairs of shielding requirements, Aeronautics and Astronautics.
And existing 6 its transmission frequencies of class data cable of widely applying are relatively low, and therefore in product structure design, heart yearn is generally the solid plastic insulation, outside non-shielding or the single-layer metal paper tinsel shielding construction of adopting.Such structural design when transmission bandwidth surpasses into 250MHz, is difficult to guarantee that product has performances such as good electric and transmission performance and anti-electromagnetic interference.
The utility model content
In order to satisfy the application requirements of the big capacity of data cable, two-forty, and solve the electromagnetic interference problem of the inside and outside of cable, make cable have better antinoise signal string, reduce the phenomenons such as error code in the transfer of data around performance.The purpose of this utility model provides a kind of multilayer screen cable for seven kinds of data, and this data cable has reduced the loss of signal in the conductor transmission effectively, has improved the whole anti-electromagnetic interference capability and the antinoise signal crosstalk performance of product.
In order to realize above-mentioned purpose, the utility model has adopted following technical scheme:
A kind of multilayer screen cable for seven kinds of data; this data cable is by the PVC protective layer; total screen and four groups of lines are to forming; the PVC protective layer is positioned at the skin of data cable; total screen is arranged in the PVC protective layer; between total screen and PVC protective layer, be provided with and tear rope; described four groups of lines are to being arranged in total screen; four groups of lines are to being made of two leads and sub-shield respectively; sub-shield with two wrapped in wire together, described lead is followed successively by copper conductor from inside to outside; the first solid PE insulating barrier; the high physical foaming froth bed and the second solid PE insulating barrier.
As preferably, above-mentioned total screen selects for use area coverage greater than 38% wire braid.As preferred again, it is the wire braid of 38%-60% that described total screen is selected area coverage for use.As most preferably, it is 45% wire braid that described total screen is selected area coverage for use.
As preferably, above-mentioned sub-shield is selected the super thin metal paper tinsel for use.
As preferably, above-mentioned high physical foaming froth bed is the froth bed of gas foam degrees 45%-70%.As preferred again, described high physical foaming froth bed is the froth bed of gas foam degrees 58%.
The utility model has following characteristics owing to adopted technique scheme:
1, the purpose of design high physical foaming insulation system, changed the insulation system of conductor, changing three layers of (solid PE layer+froth bed+solid PE layer) insulating barrier into by the solid PE insulation of individual layer forms, reduced the dielectric constant of dielectric, thereby the insulation property of conductor have been improved, reduce the loss during signal transmits effectively in conductor, reduced the delay distortion of transfer of data, thereby satisfied the application requirements of the big capacity of 7 class data cables, two-forty.
2, adopt the total points double layer screen, the sub-shield of internal layer can solve the line of cable inside to a crosstalk problem, add the double layer screen that outer field total screen constitutes, solve the electromagnetic interference problem of the inside and outside portion of cable, effectively improve the whole anti-electromagnetic interference capability and the antinoise signal crosstalk performance of product, reduced the phenomenons such as error code in the transfer of data.
The utility model product the key technical indexes:
(1) decay (ATT) :≤50dB/100m (600MHz)
(2) near-end crosstalk power and (PSNEXT) :≤58dB/100m (600MHz)
(3) characteristic impedance (NEXT): 100 ± 15 Ω (4-100MHz)
100±22Ω(100-200MHz)
100±25Ω(200-600MHz)
(4) return loss (RL): 〉=17.3dB/100m (600MHz)
Description of drawings
Fig. 1 is a structural representation of the present utility model
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is done a detailed description.
A kind of multilayer screen cable for seven kinds of data as shown in Figure 1; this data cable is made up of 3 PVC protective layer 1, total screen 2 and four groups of lines; PVC protective layer 1 is positioned at the skin of data cable; total screen 2 is arranged in the PVC protective layer 1; select the wire braid of area coverage 45% for use, between total screen 2 and PVC protective layer 1, be provided with one and tear rope 10.Described four groups of lines are arranged in total screen 23, four groups of lines are made of two leads 5 and sub-shield 4 respectively 3, sub-shield 4 is selected the super thin metal paper tinsel for use, sub-shield 4 is bundled together two leads 5, described lead 5 is followed successively by copper conductor 6, the first solid PE insulating barrier 7, high physical foaming froth bed 8 and the second solid PE insulating barrier 9 from inside to outside, and high physical foaming froth bed 8 is the froth bed of gas foam degrees 58%.
Claims (7)
1. multilayer screen cable for seven kinds of data; it is characterized in that: this data cable is by PVC protective layer (1); total screen (2) and four groups of lines are formed (3); PVC protective layer (1) is positioned at the skin of data cable; total screen (2) is arranged in the PVC protective layer (1); between total screen (2) and PVC protective layer (1), be provided with and tear rope (10); described four groups of lines are arranged in total screen (2) (3); four groups of lines are made of two leads (5) and sub-shield (4) respectively (3); sub-shield (4) is bundled together two leads (5), and described lead (5) is followed successively by copper conductor (6) from inside to outside; the first solid PE insulating barrier (7); the high physical foaming froth bed (8) and the second solid PE insulating barrier (9).
2. a kind of multilayer screen cable for seven kinds of data according to claim 1 is characterized in that: total screen (2) selects for use area coverage greater than 38% wire braid.
3. a kind of multilayer screen cable for seven kinds of data according to claim 2 is characterized in that: it is 38% to 60% wire braid that total screen (2) is selected area coverage for use.
4. a kind of multilayer screen cable for seven kinds of data according to claim 3 is characterized in that: it is 45% wire braid that total screen (2) is selected area coverage for use.
5. according to the described a kind of multilayer screen cable for seven kinds of data of any claim of claim 1～4, it is characterized in that: sub-shield (4) is selected the super thin metal paper tinsel for use.
6. according to the described a kind of multilayer screen cable for seven kinds of data of any claim of claim 1～4, it is characterized in that: high physical foaming froth bed (8) is the froth bed of gas foam degrees 45%～70%.
7. a kind of multilayer screen cable for seven kinds of data according to claim 6 is characterized in that: high physical foaming froth bed (8) is the froth bed of gas foam degrees 58%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206867281U CN201984899U (en) | 2010-12-29 | 2010-12-29 | Multilayer shielding 7-category data cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206867281U CN201984899U (en) | 2010-12-29 | 2010-12-29 | Multilayer shielding 7-category data cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201984899U true CN201984899U (en) | 2011-09-21 |
Family
ID=44612355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206867281U Expired - Lifetime CN201984899U (en) | 2010-12-29 | 2010-12-29 | Multilayer shielding 7-category data cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201984899U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751994A (en) * | 2013-12-25 | 2015-07-01 | 江苏亨通线缆科技有限公司 | Category excess 7 digital cable for network data transmission |
| CN104751998B (en) * | 2013-12-25 | 2017-01-25 | 江苏亨通线缆科技有限公司 | Super VII data transmission cable for ships |
-
2010
- 2010-12-29 CN CN2010206867281U patent/CN201984899U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751994A (en) * | 2013-12-25 | 2015-07-01 | 江苏亨通线缆科技有限公司 | Category excess 7 digital cable for network data transmission |
| CN104751994B (en) * | 2013-12-25 | 2017-01-25 | 江苏亨通线缆科技有限公司 | Category excess 7 digital cable for network data transmission |
| CN104751998B (en) * | 2013-12-25 | 2017-01-25 | 江苏亨通线缆科技有限公司 | Super VII data transmission cable for ships |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110921 |