CN201251954Y - High interference-resistance communication cable - Google Patents
High interference-resistance communication cable Download PDFInfo
- Publication number
- CN201251954Y CN201251954Y CNU2008202336568U CN200820233656U CN201251954Y CN 201251954 Y CN201251954 Y CN 201251954Y CN U2008202336568 U CNU2008202336568 U CN U2008202336568U CN 200820233656 U CN200820233656 U CN 200820233656U CN 201251954 Y CN201251954 Y CN 201251954Y
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- cable
- communication cable
- layer
- foil
- antijam communication
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- Expired - Fee Related
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- Communication Cables (AREA)
Abstract
The utility model provides a high interference-resistance communication cable, which comprises a cable core, a binding layer, an aluminum foil shielding layer, a drainage lead, an aluminum belt shielding layer and a jacket layer. The aluminum foil shielding layer is combined with the aluminum belt shielding layer, thereby improving the shielding effect of the cable, and improving the interference resistant capacity. Moreover, the dual-layer shielding structure is adopted to form the shielding structure with double insurance, thereby resolving the waste for the aluminum belt shielding layer is once broken during the construction or the application process of the cable.
Description
Technical field
The utility model relates to a kind of telecommunication cable, relates in particular to a kind of high antijam communication cable.
Background technology
Along with the high speed development of modern communications cause, the popularization of digital communication and information superhighway, a large amount of high-frequency transmission modes are used, and this will produce a large amount of stronger electromagnetic interference.Therefore, interference free performance to telecommunication cable is had higher requirement, especially in the intensive occasion of some signals, traditional city communication cable is difficult to meet the demands aspect anti-interference, be easy to cause the distorted signals transmitted, so be badly in need of improving the interference free performance of telecommunication cable, a kind of telecommunication cable with high anti-interfering performance be provided.
Summary of the invention
At above problem, the utility model provides a kind of high antijam communication cable, comprise cable core, described cable core is coated with belting layer, described belting layer outsourcing cladded aluminum foil screen, and described cable axially is provided with drain wire in described foil shielding layer outer, wherein also is coated with aluminium strip screen and restrictive coating successively at the described foil shielding layer and the described drain wire outside.
Above-mentioned high antijam communication cable, wherein, described cable core comprises one or more groups to the line group, described stranded the forming of lead that the line group is surrounded by insulating barrier by two outsides.
Above-mentioned high antijam communication cable, wherein, described to employing copper of the lead in line group and the described drain wire or copper cladding aluminum conductor.
Above-mentioned high antijam communication cable, wherein, described foil shielding layer forms by two-sided aluminium foil is wrapped.
Above-mentioned high antijam communication cable, wherein, described aluminium strip shielding thickness is 0.2-0.6mm.
Above-mentioned high antijam communication cable, wherein, described aluminium strip shielding thickness is 0.3mm.
Description of drawings
Fig. 1 is the cross section structure schematic diagram according to the high antijam communication cable of an embodiment of the present utility model.
Fig. 2 is the cross section structure schematic diagram of copper cladding aluminum conductor.
Embodiment
Fig. 1 is the cross section structure schematic diagram according to the high antijam communication cable of an embodiment of the present utility model.
As shown in Figure 1, the high antijam communication cable in the present embodiment comprises from inside to outside successively: cable core 4, belting layer 5, foil shielding layer 6, drain wire 7, aluminium strip screen 8, restrictive coating 9.
In the present embodiment, cable core 4 comprises N group (N 〉=1) to line group 3, every group line group 3 is made up of by different pitches are stranded two leads 1 that are coated with insulating barrier 2, for convenience of description, has only drawn one of them among Fig. 1 to the line group.Be extruded with insulating barrier 2 outside the every lead 1, the material of insulating barrier 2 is elected polyethylene as in the present embodiment.
The cable core 4 outer belting layers 5 that are provided with, belting layer 5 outer overlapping coating foil shielding layers 6.Being provided with one deck thickness outside the foil shielding layer 6 is two-sided plastic-coated aluminium strip overlapping vertical aluminium strip screen 8 that packs behind embossing of 0.3mm.Be provided with drain wire 7 between foil shielding layer 6 and aluminium strip screen 8, this drain wire axially is provided with along cable.The aluminium strip screen 8 outer restrictive coatings 9 that extrude the layer of polyethylene material.
In the present embodiment, lead 1 and the drain wire 7 preferred copper cladding aluminum conductors that adopt had both been saved more rare copper resource, reduced cable cost, simultaneously because the kelvin effect of transmission signals does not influence communication quality again.Certainly, do not get rid of it and can use common copper conductor or other lead yet.The structure of copper cladding aluminum conductor tightly coats copper layer 11 as shown in Figure 2 outside aluminium core 10.Belting layer 5 can improve construction of cable integrality and stability for the overlapping wrapped one side of multi-layered polyester band in the utility model, and the higher specific insulation of polyester belt can improve the insulation property of cable on the other hand.
Alternatively, can also coat folded line band, be used for the reinforced insulation effect in the inboard of belting layer 5.
In the utility model, coat one deck aluminium strip screen again, compare the shield effectiveness that has improved cable core, strengthened the interference free performance of cable with the traditional communication cable in the outside of foil shielding layer.By contrast, adopt its shield effectiveness of cable of foil shielding layer poor separately, and adopt the cable of aluminium strip screen separately because the harder shortage pliability of aluminium strip, and will can suitably reduce the thickness of aluminium strip screen after the two combination, thereby not only guaranteed pliability but also improved interference free performance.And, adopt double-layer shielding structure, formed the shielding construction of dual fail-safe, the internal layer aluminium foil can solve when cable construction or use, in case aluminium strip screen fracture failure must be scrapped the waste that causes to inner cable protection to the end constantly.
When ground connection, remove oversheath after, the direct ground connection of drain wire has been simplified the connection of shielded type cable greatly, has saved the set-up time.Generally when cable splice, remove APL aluminum plastic laminate composite sheath layer after, screen also just has been removed, and so just causes the place of continuing not have shielding protection.This structural cable when continuing, remove APL aluminum plastic laminate composite sheath layer after, unclamp aluminium foil and carry out after heart yearn continues, again aluminium foil is twined and coats the position of continuing and can recover shielding layer structure.
In addition, the aluminium strip that adopts is indulged the bag shielding mode usually, and stiffness is bad, when installing or use, problems such as cracking, opening occur easily, causes leakage signal, anti-interference inefficacy.Generally, want to strengthen shield effectiveness, increase al zone thickness merely and will increase bending radius, cause difficulty of construction to strengthen, therefore add aluminum foil shielded in the aluminium strip shielding construction, can reach shield effectiveness increases, but the effect that bending radius does not strengthen.And the individual layer aluminium foil is wrapped, easily causes aluminium foil overlap joint gap in production and use, the shield effectiveness instability of electromagnetic interference, and shield effectiveness is not high, and the cable shield effect stability that the utility model provides is reliable, has overcome above shortcoming.
Though, in conjunction with the thick two-sided plastic-coated aluminium strip overlapping vertical aluminium strip screen that packs behind embossing of 0.3mm the utility model is described above, but in actual applications, aluminium strip screen in the utility model can be chosen as the thickness that is fit to arbitrarily, 0.2-0.4mm for example, 0.4-0.6mm etc.Even, can be uneven for the described aluminium strip screen of some special applications thickness along the circumferential direction.
Although above concrete description exemplary embodiment of the present utility model, the one of ordinary skilled in the art can not break away from the multiple change of making under the spirit or scope situation of the present utility model these disclosed embodiments.Be appreciated that above-mentioned specification comprises or accompanying drawing shown in all the elements only be illustrative rather than definitive thereof.Do not breaking away under the mental condition of the present utility model that limits by appended claims, can make change in details or the structure the utility model.
Claims (7)
1. one kind high antijam communication cable is characterized in that,
Comprise cable core, described cable core is coated with belting layer, described belting layer outsourcing cladded aluminum foil screen, and drain wire axially is set at the described cable in described foil shielding layer outer, wherein also be coated with aluminium strip screen and restrictive coating successively at the described foil shielding layer and the described drain wire outside.
2. the described high antijam communication cable of claim 1 is characterized in that described cable core comprises one or more groups to the line group, described stranded the forming of lead that the line group is surrounded by insulating barrier by two outsides.
3. the described high antijam communication cable of claim 2 is characterized in that, describedly can adopt copper or copper cladding aluminum conductor to the lead in line group and the described drain wire.
4. the described high antijam communication cable of claim 1 is characterized in that described foil shielding layer forms by two-sided aluminium foil is wrapped.
5. the described high antijam communication cable of claim 1 is characterized in that described aluminium strip shielding thickness is 0.2-0.6mm.
6. the described high antijam communication cable of claim 1 is characterized in that described aluminium strip shielding thickness is 0.3mm.
7. the described high antijam communication cable of claim 1 is characterized in that, also coats folded line band in described belting layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202336568U CN201251954Y (en) | 2008-12-24 | 2008-12-24 | High interference-resistance communication cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202336568U CN201251954Y (en) | 2008-12-24 | 2008-12-24 | High interference-resistance communication cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201251954Y true CN201251954Y (en) | 2009-06-03 |
Family
ID=40747627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202336568U Expired - Fee Related CN201251954Y (en) | 2008-12-24 | 2008-12-24 | High interference-resistance communication cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201251954Y (en) |
-
2008
- 2008-12-24 CN CNU2008202336568U patent/CN201251954Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20141224 |
|
| EXPY | Termination of patent right or utility model |