CN208570202U - Screened coaxial cable - Google Patents
Screened coaxial cable Download PDFInfo
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- CN208570202U CN208570202U CN201820817738.0U CN201820817738U CN208570202U CN 208570202 U CN208570202 U CN 208570202U CN 201820817738 U CN201820817738 U CN 201820817738U CN 208570202 U CN208570202 U CN 208570202U
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- coaxial cable
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Abstract
The utility model provides a kind of screened coaxial cable, including inner conductor, insulating layer, shielded layer, outer conductor and sheath.The insulating layer includes foaming layer, and inorganic filler is distributed in foaming layer.Shielded layer includes double-layer aluminum-foil.Wherein, between inner conductor and shielded layer, outer conductor is set between shielded layer and sheath insulating layer.Screened coaxial cable provided by the utility model is decayed small while guaranteeing working frequency.
Description
Technical field
The utility model relates to field of cable technology, relate more specifically to a kind of screened coaxial cable.
Background technique
With gradually accelerating development for wireless communication, for the demand day of the high-performance high-frequency coaxial cable of network installation
Benefit increases.To coaxial cable, more stringent requirements are proposed for this, and decaying wants small while guaranteeing working frequency.It is particularly used in
Coaxial cable in mobile communication base station, working frequency range need to be increased to 6000MHz or more.And existing coaxial cable is generally adopted
Use copper pipe as shielded layer, although shielding properties is higher, can only direct bending forming, and it is expensive.
Utility model content
The utility model in order to overcome the prior art at least one is insufficient, provide one kind while guaranteeing working frequency
Small coaxial cable is wanted in decaying.
To achieve the goals above, the utility model provides a kind of screened coaxial cable, including inner conductor, insulating layer, screen
Cover layer, outer conductor and sheath.Insulating layer includes foaming layer, and inorganic filler is distributed in foaming layer.Shielded layer includes double-layer aluminum-foil.
Wherein, between inner conductor and shielded layer, outer conductor is set between shielded layer and sheath insulating layer.
Optionally, inorganic filler is calcium carbonate, talcum powder, mica, kaolin, silica, diatomite, wollastonite and charcoal
Any one in black, inorganic filler are added during foaming layer is molding.
Optionally, inner conductor includes layers of copper and aluminium core, layers of copper between aluminium core and insulating layer, layers of copper using plating or from
The method of son sputtering is applied on the outside of aluminium core.
Optionally, the copper content in inner flat conductor volume is 40wt%, and the conductivity of inner conductor is 60%IACS or more.
Optionally, double-layer aluminum-foil includes the first aluminium foil layer, polyester layer and the second aluminium foil layer, and polyester layer is set to the first aluminium foil layer
And second between aluminium foil layer.
Optionally, foaming layer is polythene physics foaming layer, and the material weight of physical blowing layer is 14kg/km.
Optionally, the thickness of sheath is 2.72mm~2.76mm, insulating layer in 0.76mm~0.95mm, the diameter of inner conductor
With a thickness of 2.15mm~2.35mm.
Optionally, sheath is pe sheath or pvc sheath.
Optionally, outer conductor is knitted to form with hard state alloy wire, and the pitch of outer conductor is not more than 21.4mm.
Optionally, hard state alloy wire is aluminum-alloy wire.
In conclusion the insulating layer in screened coaxial cable provided by the utility model is the foaming for being filled with inorganic filler
Layer, it is excellent insulator that foaming layer is not only non-conductive, can be effectively isolated inner conductor and outer conductor, meanwhile, foaming layer or good
Good shielded layer and double-layer aluminum-foil is worked in coordination, and low signal attenuation is dropped.Inorganic filler is filled in foaming layer, can not only make valence
Lattice substantially reduce, and after being added to inorganic filler, also reduce the aperture of foaming layer, further increase the shielding of foaming layer
Performance.
Meanwhile screened coaxial cable provided by the utility model uses the inner conductor of copper clad aluminum, compared to the structure of full aluminium
For, electric conductivity is more excellent, and for the structure compared to full copper, price is more cheap.
For above and other objects, features and advantages of the utility model can be clearer and more comprehensible, preferable reality is cited below particularly
Example is applied, and cooperates attached drawing, is described in detail below.
Detailed description of the invention
Fig. 1 is the schematic diagram for the screened coaxial cable that the embodiments of the present invention provide.
Specific embodiment
Embodiment one
Please refer to Fig. 1.The utility model embodiment one provides a kind of screened coaxial cable, including inner conductor 1, insulating layer 4,
Shielded layer 5, outer conductor 7 and sheath 6.Insulating layer 4 includes foaming layer, and inorganic filler 8 is distributed in foaming layer.Shielded layer 5 includes
Double-layer aluminum-foil.Wherein, between inner conductor 1 and shielded layer 5, outer conductor 7 is set between shielded layer 5 and sheath 6 insulating layer 4.
The insulating layer 4 in screened coaxial cable that the utility model embodiment one provides is the foaming for being filled with inorganic filler 8
Layer, it is excellent insulator that foaming layer is not only non-conductive, can be effectively isolated inner conductor 1 and outer conductor 7, meanwhile, foaming layer is still
Good shielded layer 5 and double-layer aluminum-foil are worked in coordination, and low signal attenuation is dropped.Inorganic filler is filled in gap in foaming layer
8, price can not only be made to substantially reduce, and after being added to inorganic filler 8, also reduce the aperture of foaming layer, further increase
The shielding properties of foaming layer.
In this present embodiment, inorganic filler 8 is calcium carbonate, and inorganic filler 8 is added during foaming layer is molding.But
The utility model does not do any restriction to the type of inorganic filler 8, and in other embodiments, inorganic filler 8 can also be talcum
Any one in powder, mica, kaolin, silica, diatomite, wollastonite and carbon black.Compare other inorganic fillers 8,
Calcium carbonate is cheap, relatively conventional.This screened coaxial cable signal when 1Ghz front end decays to 4.23dB, meets
Actual use standard coaxial cable signal when 1Ghz front end decays to 4.25dB requirement below.As calcium carbonate adds
Dosage gradually increases, and the diameter of the abscess of foaming layer is gradually reduced, this is because after being added to the inorganic fillers such as calcium carbonate,
The viscosity and modulus of foamed substrate all increase, and during growth, resistance increases abscess, and the speed of growth of abscess reduces, because
The diameter of this abscess reduces.
In this present embodiment, inner conductor 1 includes layers of copper 3 and aluminium core 2, and layers of copper 3 is between aluminium core 2 and insulating layer 4, layers of copper
3 are applied to 2 outside of aluminium core using electric plating method.But the utility model does not do any restriction to the coating method of copper, in
In other embodiments, layers of copper 3 can also be applied to 2 outside of aluminium core using the method for ion sputtering.Layers of copper 3 is coated on aluminium core
On the outside of 2, for the structure compared to full aluminium, electric conductivity is more excellent, and for the structure compared to full copper, price is more cheap.
In this present embodiment, the copper content in 1 unit volume of inner conductor is 40wt%, and the conductivity of inner conductor 1 is 60%
IACS or more.The conductivity of inner conductor 1 is just able to satisfy the demand of as-is data transmission in 60%IACS or more.
In this present embodiment, double-layer aluminum-foil includes the first aluminium foil layer, polyester layer and the second aluminium foil layer, and polyester layer is set to first
Between aluminium foil layer and the second aluminium foil layer.Double-layer aluminum-foil includes two layers of aluminium foil, has the function of dual shield.
In this present embodiment, foaming layer is polythene physics foaming layer, and the material weight of physical blowing layer is 14kg/km.Poly- second
Alkene physical blowing layer process is more mature, and difficulty of processing is low.
In this present embodiment, sheath 6 with a thickness of 0.76mm, the diameter of inner conductor 1 is 2.72mm, the thickness of insulating layer 4
For 2.15mm.
In this present embodiment, sheath 6 is pe sheath 6, but the utility model does not do any limit to the type of sheath 6
Fixed, in other embodiments, sheath 6 can also be pvc sheath 6.Pe sheath 6 is highly resistant to extraneous ultraviolet light
Etc. other factors interference, reduce aging, increase screened coaxial cable use the time.
In this present embodiment, outer conductor 7 is formed with aluminum-alloy wire, and the pitch of outer conductor 7 is not more than 21.4mm.But this reality
Any restriction is not done with the novel type to outer conductor 7, and in other embodiments, outer conductor 7 can also be other hard state alloys
Silk.
In this present embodiment, the outside of inner conductor 1 is equipped with corrosion barrier layer 5.The surface of inner conductor 1 is equipped with corrosion barrier layer
5, the contact of inner conductor 1 with extraneous corrosive medium is reduced, increase inner conductor 1 uses the time.
The impedance of screened coaxial cable in this implementation is the Ω of 48 Ω~52, and insulation pressure resistance is 2500DC/min, insulated electro
Resistance is not less than 1000M Ω/km, and 1 D.C. resistance of inner conductor is not more than 4.6 Ω/km.
Embodiment two
The structure in inner conductor 1, insulating layer 4, shielded layer 5, outer conductor 7 and sheath 6 and embodiment one in embodiment two
With shape all, identical part is repeated no more, only different piece is explained below using being identically numbered in this.
In this present embodiment, sheath 6 with a thickness of 0.95mm, the diameter of inner conductor 1 is 2.76mm, the thickness of insulating layer 4
For 2.35mm.
Embodiment three
The structure in inner conductor 1, insulating layer 4, shielded layer 5, outer conductor 7 and sheath 6 and embodiment one in embodiment three
With shape all, identical part is repeated no more, only different piece is explained below using being identically numbered in this.
In this present embodiment, sheath 6 with a thickness of 0.82mm, the diameter of inner conductor 1 is 2.74mm, the thickness of insulating layer 4
For 2.25mm.
Example IV
The structure in inner conductor 1, insulating layer 4, shielded layer 5, outer conductor 7 and sheath 6 and embodiment one in example IV
With shape all, identical part is repeated no more, only different piece is explained below using being identically numbered in this.
In this present embodiment, inorganic filler 8 is silica.This screened coaxial cable signal when 1Ghz front end
Decay to 4.22dB.Using silica as inorganic filler 8, actual use standard coaxial cable is also able to satisfy in 1Ghz front end
When signal decay to 4.25dB requirement below.
It will be understood by those skilled in the art that in exposure of the invention, term " on ", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion meaning
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore above-mentioned term should not be understood as pair
The limitation of invention.
Although the utility model is disclosed above by preferred embodiment, it is not intended to limit the utility model, it is any
This known those skilled in the art can make some changes and embellishment without departing from the spirit and scope of the utility model, therefore this is practical
Novel protection scope is subject to view claims range claimed.
Claims (10)
1. a kind of screened coaxial cable characterized by comprising
Inner conductor；
Inorganic filler is distributed in the foaming layer in insulating layer, including foaming layer；
Shielded layer, including double-layer aluminum-foil；
Outer conductor；And
Sheath；
Wherein, the insulating layer is between the inner conductor and the shielded layer, the outer conductor be set to the shielded layer and
Between the sheath.
2. screened coaxial cable described in accordance with the claim 1, which is characterized in that the inorganic filler be calcium carbonate, talcum powder,
Any one in mica, kaolin, silica, diatomite, wollastonite and carbon black, the inorganic filler is in the foaming layer
It is added during molding.
3. screened coaxial cable described in accordance with the claim 1, which is characterized in that the inner conductor includes layers of copper and aluminium core, institute
Layers of copper is stated between the aluminium core and the insulating layer, the layers of copper is applied to institute using the method for plating or ion sputtering
It states on the outside of aluminium core.
4. screened coaxial cable described in accordance with the claim 3, which is characterized in that the conductivity of the inner conductor is 60%IACS
More than.
5. screened coaxial cable described in accordance with the claim 1, which is characterized in that the double-layer aluminum-foil include the first aluminium foil layer,
Polyester layer and the second aluminium foil layer, the polyester layer are set between first aluminium foil layer and second aluminium foil layer.
6. screened coaxial cable described in accordance with the claim 1, which is characterized in that the foaming layer is polythene physics foaming
Layer, the material weight of the physical blowing layer are 14kg/km.
7. screened coaxial cable described in accordance with the claim 1, which is characterized in that the thickness of the sheath 0.76mm~
0.95mm, the diameter of the inner conductor are 2.72mm~2.76mm, the insulating layer with a thickness of 2.15mm~2.35mm.
8. screened coaxial cable described in accordance with the claim 1, which is characterized in that the sheath is pe sheath or polychlorostyrene second
Alkene sheath.
9. screened coaxial cable described in accordance with the claim 1, which is characterized in that the outer conductor weaves shape with hard state alloy wire
At the pitch of the outer conductor is not more than 21.4mm.
10. screened coaxial cable according to claim 9, which is characterized in that the hard state alloy wire is aluminum-alloy wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820817738.0U CN208570202U (en) | 2018-05-29 | 2018-05-29 | Screened coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820817738.0U CN208570202U (en) | 2018-05-29 | 2018-05-29 | Screened coaxial cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208570202U true CN208570202U (en) | 2019-03-01 |
Family
ID=65482863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820817738.0U Active CN208570202U (en) | 2018-05-29 | 2018-05-29 | Screened coaxial cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208570202U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110610780A (en) * | 2019-09-30 | 2019-12-24 | 富士康(昆山)电脑接插件有限公司 | Cable with a flexible connection |
| CN112285501A (en) * | 2020-10-23 | 2021-01-29 | 广东电网有限责任公司广州供电局 | High-voltage lead shielding device, ranging system and method |
-
2018
- 2018-05-29 CN CN201820817738.0U patent/CN208570202U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110610780A (en) * | 2019-09-30 | 2019-12-24 | 富士康(昆山)电脑接插件有限公司 | Cable with a flexible connection |
| CN112285501A (en) * | 2020-10-23 | 2021-01-29 | 广东电网有限责任公司广州供电局 | High-voltage lead shielding device, ranging system and method |
| CN112285501B (en) * | 2020-10-23 | 2024-03-01 | 广东电网有限责任公司广州供电局 | High-voltage lead shielding device, ranging system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: High shielding coaxial cable plug Effective date of registration: 20200721 Granted publication date: 20190301 Pledgee: Zhejiang Zhuji Rural Commercial Bank Co., Ltd. Lipu sub branch Pledgor: ZHEJIANG COMMSPACE CABLE Co.,Ltd. Registration number: Y2020330000519 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210724 Granted publication date: 20190301 Pledgee: Zhejiang Zhuji Rural Commercial Bank Co., Ltd. Lipu sub branch Pledgor: ZHEJIANG COMMSPACE CABLE Co.,Ltd. Registration number: Y2020330000519 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Shielded coaxial cable Effective date of registration: 20210729 Granted publication date: 20190301 Pledgee: Zhejiang Zhuji Rural Commercial Bank Co., Ltd. Lipu sub branch Pledgor: ZHEJIANG COMMSPACE CABLE Co.,Ltd. Registration number: Y2021330001035 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |