CN2938337Y - 5-type and 6-type shielded cable in integral wiring - Google Patents
5-type and 6-type shielded cable in integral wiring Download PDFInfo
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- CN2938337Y CN2938337Y CN 200620043519 CN200620043519U CN2938337Y CN 2938337 Y CN2938337 Y CN 2938337Y CN 200620043519 CN200620043519 CN 200620043519 CN 200620043519 U CN200620043519 U CN 200620043519U CN 2938337 Y CN2938337 Y CN 2938337Y
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- aluminium foil
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Abstract
The utility model relates to a 5 class and 6 class shielding cable in composite electrical wiring, which comprises an outer jacket (70), a core (80), a first monolayer aluminum foil (90), a second monolayer aluminum foil (100) between the jacket (70) and the jumping-off point of the second monolayer aluminum foil (100) which is connected with the end of the first monolayer aluminum foil (90). The useful effect of the utility model is that the shielding performance of the cable is greatly improved, the installation is convenient; the connection of the shielding cable is simplified, the installation time is reduced and the installation is as simple as the UTP.
Description
Technical field
The utility model relates to 5 classes and 6 type shielding cables in a kind of comprehensive wiring, relates in particular to aluminium foil structure in this 5 class and the 6 type shielding cables.
Background technology
Comprehensive wiring is in a kind of modular, building that flexibility is high or the information transfer channel between the groups of building.It can make voice, data, vision facilities and message exchange equipment and other information management systems be connected with each other, and these equipment are connected with external communication network.It also comprises all cables between building outside wiring network or telecommunication line and the application system equipment and relevant link.Comprehensive wiring is made up of the parts of variety classes and specification, comprising: transmission medium, relevant connection hardware (as distributing frame, connector, socket, plug, adapter) and electic protection are not equipped with etc.These parts can be used to make up various distribution subsystems, and they all have concrete purposes separately, installation not only easy to implement, and can the graceful upgrade with the variation of demand.
But along with the change of time and network application, everybody recognizes that deeply wiring system is the basis of intelligent building, and in close relations with information network mainly lays particular emphasis on the construction of multimedia integration Network Transmission such as phone, data, picture and text, image.Wiring system performance rate and standard are constantly being improved and upgrading along with the development of network communications technology.
There is the High-frequency Interference that distribution box and power distribution network produce in the comprehensive wiring network in inside, building, the Harmonic Interference that the high power motor electric spark produces, the interference sources such as recurrent pulses that the ringing current of fluorescent tube, electronic starter, mains switch, telephone network, messaging device produce should adopt shielding harness in the time can not keeping personal distance.There are interference sources such as radar, radio transition equipment, mobile telephone base station, high-tension bus-bar, electric railway, lightning strike area in the comprehensive wiring network in the outside, building.
The radio wave band frequency that examination is thought of us constantly develops the confusion that is caused.Increasing of household radio device, mobile phone and comprise other wireless communication mode user's of WLAN (wireless local area network) continuous growth.Federal Communications Commission FCC auctions the 1850-1990MHz frequency band recently on a grand scale.Though these frequencies also are not suitable for most of networks, the service supplier has been reflected the trend that develops to wireless service significantly to the enthusiasm of current auction.The use of 0-100MHz wave band comprises sea-freight, public security and fire alarm communication, AM and FM part bandwidth, ham radio, D level civil band or the like.Because the technology sustainable development of wireless telecommunications can estimate that radio wave has brought the more information pollution.So just present, how under the situation that guarantees transmission requirement, guarantee to comprise fail safe, confidentiality and network failure prevented to become matter of utmost importance.
How could prevent electromagnetic interference effectively? experiment shows that the electromagnetic wave that frequency surpasses 5MHz can only see through the thick aluminium foil of 38 μ m.If allow the thickness of screen surpass 38 μ m, just allow to see through screen and enter the frequency of electromagnetic interference of cable inside mainly below 5MHz.And effectively offset for the principle that the low-frequency disturbance below the 5MHz can be used multiple twin.
The shield wiring system that comes from Europe adds metal screen layer in the outside of common non-shield wiring system, utilize the reflection, absorption of metal screen layer and the function that skin effect realizes preventing electromagnetic interference and electromagnetic radiation, shielding harness has fully utilized the equilibrium principle of twisted-pair feeder and the shielding action of screen.Thereby has extraordinary electromagnetic compatibility (EMC) characteristic.
By Figure 1A as seen: existing 5 type shielding cables comprise: outermost sheath 10, core 20 and the screen between core 20 and sheath 10: individual layer aluminium foil 3; Comprise conductor 201, outer insulating barrier 202, ground wire 203, the tearing rope 204 of conductor in the core 20.
By Figure 1B as seen: existing 6 type shielding cables comprise: outermost sheath 40, core 50 and the screen between core 50 and sheath 40: individual layer aluminium foil 60; Comprise the cross 505 between insulating barrier 502, ground wire 503, tearing rope 504 and the insulating barrier outside conductor outside conductor 501, the conductor in the core 50.
No matter be that 5 type shielding cables or 6 type shielding cables have only one deck because of screen, in installation and use, easily cause aluminium foil overlap joint gap, the shield effectiveness instability of electromagnetic interference (EMI), shield effectiveness is not high.
During installation, because of making every effort to shield effectiveness preferably, need turn over aluminium foil could ground connection.Installing like this can be inconvenient, but destroys screen easily, reduces shield effectiveness.
Because of turning down screen inevitably, the cable that can cause certain-length is not in shadow.
Aluminium foil can open during burning, makes inner PE insulation heart yearn be easy to burning, and coefficient of safety is not high.
Summary of the invention
The utility model technical issues that need to address have provided 5 classes and 6 type shielding cables in a kind of comprehensive wiring, are intended to solve above-mentioned defective.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: outermost sheath, core and the first individual layer aluminium foil between core and sheath; Also be included in the second individual layer aluminium foil between the sheath and the first individual layer aluminium foil; The end of the starting point of the described second individual layer aluminium foil and the first individual layer aluminium foil joins.
Compared with prior art, the beneficial effects of the utility model are: not only improved the shielding properties of cable greatly, provide the installation aspect high convenience simultaneously; Simplify the connection of shielded type cable greatly, saved the set-up time, the same simple with the installation of unshielded twisted pair (UTP) cable.
Description of drawings
Figure 1A is prior art 5 type shielding cable profiles;
Figure 1B is prior art 6 type shielding cable profiles;
Fig. 2 A is 5 type shielding cable profiles in the utility model;
Fig. 2 B is 6 type shielding cable profiles in the utility model;
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
By Fig. 2 A, Fig. 2 B as seen: the utility model comprises: outermost sheath 70, core 80 and the first individual layer aluminium foil 90 between core 80 and sheath 70; Also be included in the second individual layer aluminium foil 100 between the sheath 70 and the first individual layer aluminium foil 90; The end of the starting point of the described second individual layer aluminium foil 100 and the first individual layer aluminium foil 90 joins;
The overlapping of the described second individual layer aluminium foil 100 and the first individual layer aluminium foil 90 is 180 degree.
The utility model has adopted the unique bilayer in the current whole world to indulge alclad paper tinsel shielding construction, the i.e. aluminium foil that vertical double-baging 〉=25um is thick in the outside of UTP cable, the vertical pack arrangement of this bilayer both can avoid cable crooked or when being heated screen small slit appears, reduce transfger impedance again, improved shield effectiveness.Aspect electric property, 5 class netting twines have surmounted the requirement of TIA/EIA 568B fully in the utility model, and six class netting twines have passed through DELTA, UL, and the authentication of third party's independent experiment chambers such as ETL, its performance satisfies the six class standard requirement of TIA/EIA 568B fully.The double-layer aluminum-foil of the utility model uniqueness provides more superior EMC performance.
Aspect installation, screen of the present utility model is made up of two-layer aluminium foil.Exactly because this double-layer aluminum-foil structure not only has than individual layer aluminium foil cable more performance, and has simplified the connection of shielded type cable greatly, has saved the set-up time, make the installation of double-layer aluminum-foil FTP cable equally simple with the installation of UTP cable.Double-layer aluminum-foil is by two-layer aluminium foil (conductor layer) and spread on its surperficial plastic film (insulating barrier) formation, and conductor layer is relative.When cable becomes end, can easily cable jacket and outside one deck screen be removed, expose the inside one deck screen, conductor layer is outside.
Longer shield effectiveness: because ground wire just directly is exposed after removing oversheath, can connect easily, the internal layer aluminium foil can be to inner cable protection to the end constantly.
Consider from the aspect of electromagnetic compatibility (EMC), the screen of cable must with large-area metal surface around contacting, promptly so-called 360o ground connection (Grounding).In the utility model, only need and to get final product on the gloomy patented product Clip-onTM of the inside one deck screen card Nike cable conductor frame, the assurance shielded type cable is all realized 360 ° around ground connection (Grounding) at distributing frame and telecommunications outlet, can never produce so-called " antenna effect ".This Clip-onTM cable conductor frame and modularization distribution board integrate.
Better flame retardant effect: aluminium foil can play the effect of heat dispersing.When having only one deck aluminium foil, sheath is lighted, and the aluminium foil of the inside will open, and inner PE heart yearn will blaze up.If two-layer aluminium foil is arranged, outside one deck aluminium foil opens, and because of the inside layer aluminium foil and skin are that 180 degree are overlapping, the inside one deck can not open, and still can protect inner PE insulation heart yearn.
Making the utility model and use two sleeve forming moulds, is 180 degree thereby make the lap position of ectonexine plastic-aluminum band.
Claims (2)
1. 5 classes and 6 type shielding cables in the comprehensive wiring comprise: outermost sheath (70), core (80) and the first individual layer aluminium foil (90) between core (80) and sheath (70); It is characterized in that: also be included in the second individual layer aluminium foil (100) between the sheath (70) and the first individual layer aluminium foil (90); The end of the starting point of the described second individual layer aluminium foil (100) and the first individual layer aluminium foil (90) joins.
2. 5 classes and 6 type shielding cables in the comprehensive wiring according to claim 1 is characterized in that: the described second individual layer aluminium foil (100) is 180 degree with the overlapping of the first individual layer aluminium foil (90).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620043519 CN2938337Y (en) | 2006-06-30 | 2006-06-30 | 5-type and 6-type shielded cable in integral wiring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620043519 CN2938337Y (en) | 2006-06-30 | 2006-06-30 | 5-type and 6-type shielded cable in integral wiring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2938337Y true CN2938337Y (en) | 2007-08-22 |
Family
ID=38362363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620043519 Expired - Fee Related CN2938337Y (en) | 2006-06-30 | 2006-06-30 | 5-type and 6-type shielded cable in integral wiring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2938337Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841997A (en) * | 2010-05-20 | 2010-09-22 | 华北电力大学 | Method for filtering unshielded measuring cable of power system |
| CN103700995A (en) * | 2009-04-23 | 2014-04-02 | 北卡罗来纳科姆斯科普公司 | Assembly and system of data communication cables and connectors |
-
2006
- 2006-06-30 CN CN 200620043519 patent/CN2938337Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700995A (en) * | 2009-04-23 | 2014-04-02 | 北卡罗来纳科姆斯科普公司 | Assembly and system of data communication cables and connectors |
| CN101841997A (en) * | 2010-05-20 | 2010-09-22 | 华北电力大学 | Method for filtering unshielded measuring cable of power system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NEXANS KDDI ( SHANGHAI ) CABLE CO., LTD. Free format text: FORMER NAME OR ADDRESS: SHANGHAI NEXANS CABLE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 82, Lane 135, South Chen Road, Shanghai, China: 200436 Patentee after: Nexans Communication (Shanghai) Cable Co., Ltd. Address before: 82, Lane 135, South Chen Road, Shanghai, China: 200436 Patentee before: Shanghai Nexans Kanghua Cable Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070822 |