CN201402673Y - Coaxial cable used under low frequency condition - Google Patents
Coaxial cable used under low frequency condition Download PDFInfo
- Publication number
- CN201402673Y CN201402673Y CN2009200957563U CN200920095756U CN201402673Y CN 201402673 Y CN201402673 Y CN 201402673Y CN 2009200957563 U CN2009200957563 U CN 2009200957563U CN 200920095756 U CN200920095756 U CN 200920095756U CN 201402673 Y CN201402673 Y CN 201402673Y
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- coaxial cable
- low frequency
- frequency condition
- metal composite
- cable
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Abstract
The utility model relates to a coaxial cable used under low frequency condition, which belongs to the technical field of communication cable. The coaxial cable used under low frequency condition comprises a conductor, an insulation layer wrapping the conductor, a metal composite belt shielding layer wrapping the insulation layer, and an outer sheath wrapping the shielding layer. The coaxial cableis characterized in that the shielding layer consists of two-layered metal composite belts, and a copper ground wire between the two-layered metal composite belts. The coaxial cable has the advantagesof low cost, reduced weight, stable shielding layer structure, stable electrical performance and the like, and can meet the requirement of cable transmission.
Description
Technical field
The utility model belongs to technical field of communication cables, particularly relates to the coaxial cable that uses under a kind of low frequency condition.
Background technology
At present, coaxial cable is mainly used in the higher-frequency transmission system of communication apparatus.The structure of known coaxial cable is: inner wire is coated with solid insulating barrier, and insulating barrier has the outer conductor of metal knitted pattern outward, and outer conductor is coated with sheath.Though the coaxial cable of this structure can be realized the signal transmission of equipment, the whole cable size is bigger than normal, therefore requires the box sizes of communication apparatus also bigger, and cost is higher.Follow-on coaxial cable adopts foamed insulation or foaming and solid skin combined insulation, and outer conductor still adopts braid shielded, though cable dimension reduces to some extent, cost is still higher, and using property data is wasted to some extent under the low frequency condition.
Summary of the invention
The utility model provides the coaxial cable that (general 4MHz is following) uses under a kind of low frequency condition for solving the problem that prior art exists.
The utility model purpose provides a kind of saving cable cost, alleviates cable weight, and double-deck aluminum composite belt shielding improves the coaxial cable that uses under the low frequency condition of the characteristics such as electric property stability under the cable low frequency condition.
The coaxial cable that uses under the utility model low frequency condition adopts following technical scheme:
The coaxial cable that uses under a kind of low frequency condition, comprise the insulating barrier of conductor, coating conductor, the metal compound belt screen of coated insulation layer and the oversheath composition that coats screen, be characterized in: screen is made up of the double-level-metal composite band, between the double-level-metal composite band copper cash is arranged.
The coaxial cable that uses under the utility model low frequency condition can also adopt following technical measures:
The coaxial cable that uses under the described low frequency condition is characterized in: screen is formed by the double-level-metal composite band is wrapped.
The coaxial cable that uses under the described low frequency condition is characterized in: place the copper ground wire in the middle of the double-level-metal composite band.
The coaxial cable that uses under the described low frequency condition is characterized in: the insulating barrier of coating conductor is foaming-Pi insulating barrier or skin-foaming-Pi insulating barrier.
The coaxial cable that uses under the described low frequency condition is characterized in: coaxial cable is the many multicore coaxial cables that are combined into, and multicore coaxial cable is coated with plastic film.
Advantage that the utlity model has and good effect:
The coaxial cable that uses under the low frequency condition, owing to adopt the utility model brand-new technology scheme, therefore, have following characteristics: the coaxial cable that uses under the low frequency condition, because frequency is low, cable attenuation was just smaller originally, therefore adopted aluminum composite belt to add the copper ground wire and formed outer conductor, can satisfy cable transmission decay requirement, thereby can reduce cost by more traditional braided outer conductor cable.But the individual layer aluminum composite belt adds copper ground wire outer conductor structural cable, the physical dimension less stable, thereby cause the cable properties impedance unstable under the low frequency condition, excursion is bigger.After adopting this use novel cable, screen adds the copper ground wire by the single-layer metal composite band and becomes the double-level-metal composite band and add the copper ground configurations, improved the structural stability of screen greatly, substantially under the prerequisite that does not have to improve at cable cost, characteristic impedance stability improves greatly under the cable low frequency condition.Satisfy the cable transmission requirement.
Description of drawings
Fig. 1 is a multicore coaxial cable structural representation of the present utility model;
Fig. 2 is the structural representation of single core coaxial cable among Fig. 1.
Among the figure: 1, single core coaxial cable; 1-1, inner wire; 1-2, bubble skin insulating barrier; 1-3, metal compound belt; 1-4, copper ground wire; 1-5, metal compound belt; 1-6, inner sheath; 2, the total screen of aluminum composite belt; 3, nonwoven fabrics; 4, weave total screen; 5, restrictive coating; 6, tear line.
Embodiment
For further understanding technology contents of the present utility model, characteristics and effect, enumerate following example now, and conjunction with figs. is described in detail as follows:
Embodiment
With reference to accompanying drawing 1 and Fig. 2.
The coaxial cable that uses under a kind of low frequency condition has the insulating barrier of conductor, coating conductor, and the insulating barrier of coating conductor is foaming-Pi insulating barrier or skin-foaming-Pi insulating barrier.The coated insulation layer has the metal compound belt screen, and screen is formed by the double-level-metal composite band is wrapped, and metal covering is corresponding, places the copper earth connection in the middle of the double-level-metal composite band.Coaxial cable is 8 multicore coaxial cables that are combined into, the oversheath that multicore coaxial cable is coated with woven shield and coats screen.
The concrete structure of present embodiment:
8 single coaxial cable 1 are the total screen 4 of braiding outside the aluminum composite belt screen 2 by aluminum composite belt screen 2 parcels, and cable core central longitudinal bag is filled nonwoven fabrics 3, so that the cable rounding; Outside the total shielding 4 of braiding is restrictive coating 5 and tear line 6.
Fig. 2 is the detailed icon of the single coaxial cable 1 of Fig. 1, and inner wire 1-1 outer surface coats the bubble skin insulating barrier 1-2 by foaming layer and nonfoamed layer combination form, and foaming layer is in the same place with the nonfoamed layer tight adhesion.Be coated with metal compound belt 1-3 at insulating barrier, copper ground wire 1-4, the outer conductor that metal compound belt 1-5 combines, this combination outer conductor Stability Analysis of Structures, improve the characteristic impedance stability under the cable low frequency condition, and reduce than the outer conductor decay that the single-layer metal composite band adds the copper ground wire, copper ground wire 1-4 can make the electric charge on the metal compound belt import the earth smoothly.Be coated with inner sheath 1-6 at combination outer conductor (1-3,1-4,1-5).
This low high frequency coaxial cable embodiment is 8 core coaxial cables, and both the center was provided with 1, was provided with 7 on every side.Can also make coaxial cables such as 7 cores, 16 cores, 32 cores, 42 cores as required.
Claims (5)
1. the coaxial cable that uses under the low frequency condition, comprise the insulating barrier of conductor, coating conductor, the metal compound belt screen of coated insulation layer and the oversheath composition that coats screen, it is characterized in that: screen is made up of the double-level-metal composite band, and the copper ground wire is arranged between the double-level-metal composite band.
2. according to the coaxial cable that uses under the described low frequency condition of claim 1, it is characterized in that: screen is formed by the double-level-metal composite band is wrapped.
3. according to the coaxial cable that uses under claim 1 or the 2 described low frequency conditions, it is characterized in that: double-level-metal composite band central longitudinal is put the copper ground wire.
4. according to the coaxial cable that uses under the described low frequency condition of claim 1, it is characterized in that: the insulating barrier of coating conductor is foaming-Pi insulating barrier or skin-foaming-Pi insulating barrier.
5. according to the coaxial cable that uses under the described low frequency condition of claim 1, it is characterized in that: coaxial cable is the many multicore coaxial cables that are combined into, and multicore coaxial cable is coated with plastic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200957563U CN201402673Y (en) | 2009-03-05 | 2009-03-05 | Coaxial cable used under low frequency condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200957563U CN201402673Y (en) | 2009-03-05 | 2009-03-05 | Coaxial cable used under low frequency condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201402673Y true CN201402673Y (en) | 2010-02-10 |
Family
ID=41662473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200957563U Expired - Fee Related CN201402673Y (en) | 2009-03-05 | 2009-03-05 | Coaxial cable used under low frequency condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201402673Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866718A (en) * | 2010-06-13 | 2010-10-20 | 常熟泓淋电线电缆有限公司 | Coaxial cable for low frequency |
-
2009
- 2009-03-05 CN CN2009200957563U patent/CN201402673Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866718A (en) * | 2010-06-13 | 2010-10-20 | 常熟泓淋电线电缆有限公司 | Coaxial cable for low frequency |
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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: 20100210 Termination date: 20140305 |