CN206163193U - Semi -flexible coaxial cable - Google Patents
Semi -flexible coaxial cable Download PDFInfo
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- CN206163193U CN206163193U CN201620963193.5U CN201620963193U CN206163193U CN 206163193 U CN206163193 U CN 206163193U CN 201620963193 U CN201620963193 U CN 201620963193U CN 206163193 U CN206163193 U CN 206163193U
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- coaxial cable
- flexible coaxial
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Abstract
The utility model relates to a semi -flexible coaxial cable, include by interior inner conductor, insulating layer, internal shield layer, external shielding layer and the sheath that sets gradually outside to, the insulating layer for low -density polytetrafluoroethylene film around covering or expanded polyethylene insulating layer. Compared with the prior art, the utility model has the advantages of the electric property of cable can be guaranteed, the reliability of cable can be guaranteed again.
Description
Technical field
The utility model belongs to semi-flexible coaxial cable technical field, and in particular to a kind of semi-flexible coaxial cable.
Background technology
At present, the insulation of semi-flexible coaxial cable uses " real core teflon insulation " and " lotus root shape polytetrafluoroethylene (PTFE)
Insulation ", and the shortcoming of both insulation is all apparent.The dielectric constant of " real core teflon insulation " is larger (left 2.1
It is right), its decay larger (comparing under the identical construction of cable and size) is so resulted in, and it is the extremely important of cable to decay
An electricity function index.So the cable of this class formation has larger defect in electric property." lotus root shape polytetrafluoroethyl-ne
Alkene insulate " special process is adopted when insulation is pushed so as to and insulation forms hollow lotus root shape, effectively reduces the dielectric of cable
Constant, reduces the decay of cable.But because the hollow parts in its insulation are produced, space is larger, and cable end face is exposed
When, have aqueous vapor and dust is entered in cable, so as to the electric property for causing cable is deteriorated.In addition in cable bend, by
Do not support in the insulation of sweep, cause insulation deformation larger, so that the standing wave of cable and phase place produce larger changing
Become, affect the transmission of signal.
The content of the invention
The purpose of this utility model is exactly the defect in order to overcome above-mentioned prior art to exist and provides one kind and both can guarantee that
The electric property of cable, can guarantee that the semi-flexible coaxial cable of the reliability of cable again.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of semi-flexible coaxial cable, including the inner wire, insulating barrier, internal shield, the external shield that set gradually from inside to outside
Layer and sheath, described insulating barrier is low-density polytetrafluoroethylene film lapping layer or polyethylene foamed insulating barrier.
Preferably, described low-density polytetrafluoroethylene film lapping layer adopts density for 0.5～1.9g/cm3It is low close
Degree polytetrafluoroethylene film lapping layer.
It is further preferred that described low-density polytetrafluoroethylene film lapping layer adopts density for 0.7～1.6g/cm3
Low-density polytetrafluoroethylene film lapping layer.
Preferably, described polyethylene foamed insulating barrier be extrude physically foamed pe insulation layer in the conductor or
Chemical blowing polyethylene layer.
Preferably, described inner wire is bare copper wire, copper-clad aluminum conductor, silver-coated copper wire or tinned wird.
Preferably, described internal shield be using vertical bag or the copper foil-clad layer around packet mode, silver-plated Copper Foil clad,
Copper moulds thin-film cladding layer or aluminium plastic membrane clad.
Preferably, described external shielding layer is proof copper-wire braided layer, tincopper fuse wire braided armor, silver-gilt copper wire braiding layer or alloy
Silk braiding layer.
Preferably, described internal shield and external shielding layer are welded to connect by wicking process.
Preferably, described sheath is fluoroplastics sheath or vistanex sheath.
Compared with prior art, the utility model has the advantages that：
Insulation of the present utility model employs that low-density polytetrafluoroethylene film is wrapped or knot of polyethylene foamed insulating barrier
The density of structure mode, low-density polytetrafluoroethylene film and polyethylene foamed is very uniform, so reducing cable
While dielectric constant, in turn ensure that cable has stable architectural characteristic.Semi-flexible coaxial cable before is cannot be simultaneously simultaneous
2 points more than turning round and look at, semi-flexible coaxial cable of the present utility model both ensure that the electric property of cable, and cable is can guarantee that again
Reliability.
The utility model preferred density is 0.3～0.4g/cm3Haircut bubble polyethylene layer or chemical blowing polyethylene
Insulating barrier is reducing the cable dielectric constant of semi-flexible coaxial cable and is ensureing that cable has stable architectural characteristic as insulating barrier
While, reduce cable weight.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure, 1 is inner wire, and 2 is insulating barrier, and 3 is internal shield, and 4 is external shielding layer, and 5 is sheath.
Specific embodiment
Below in conjunction with the accompanying drawings the utility model is described in detail with specific embodiment.
Embodiment 1
A kind of semi-flexible coaxial cable, as shown in figure 1, including the inner wire 1, insulating barrier 2, the interior screen that set gradually from inside to outside
Cover layer 3, external shielding layer 4 and sheath 5.Wherein, inner wire 1 be bare copper wire, copper-clad aluminum conductor, silver-coated copper wire or tinned wird, this reality
Apply the example preferably silver-coated copper wire of a diameter of 1.35mm；Insulating barrier 2 is 0.5～1.9g/cm3Low-density polytetrafluoroethylene film around
Covering, this enforcement selects 0.7～1.6g/cm3Low-density polytetrafluoroethylene film it is wrapped in the conductor formed insulating barrier 2；
Internal shield 3 is using vertical bag or the copper foil-clad layer around packet mode, silver-plated Copper Foil clad, copper modeling thin-film cladding layer or plastic-aluminum
Thin-film cladding layer, the present embodiment preferably indulges the Copper Foil of packet mode；External shielding layer 4 is proof copper-wire braided layer, tincopper fuse wire braided armor, plating
Silver-bearing copper silk braiding layer or B alloy wire braiding layer, the preferred tinned copper wire of the present embodiment is worked out to form external shielding layer 4, and by internal shield
3 and external shielding layer 4 by wicking process be welded together；Sheath is fluoroplastics sheath or vistanex sheath, this reality
Apply preferred perfluoroethylene-propylene sheath.
The preparation technology flow process of the semi-flexible coaxial cable is：
(1) it is 0.7～1.6g/cm with density3The wrapped plating in a diameter of 1.35mm of low-density polytetrafluoroethylene film
In silver-copper wire；
(2) with the vertical bag of Copper Foil on low-density polytetrafluoroethylene film lapping layer, while being entered to it with tinned copper wire braiding
Row is reinforced；
(3) cable is carried out into wicking process；
(4) sheath extrusion molding, sheath material is perfluoroethylene-propylene.
Embodiment 2
The present embodiment is substantially the same manner as Example 1, and it is that polyethylene foamed is exhausted that difference is the insulating barrier 2 of the present embodiment
Edge layer, polyethylene foamed layer can be physically foamed pe insulation layer or chemical blowing polyethylene layer.The present embodiment is excellent
Select physically foamed pe insulation layer.
Technological process is：
(1) pass through physical blowing extrusion molding on the copper cash of a diameter of 1.78mm with special physical blowing polyethylene, foam
The density of polyethylene layer is 0.3～0.4g/cm3。
(2) with the vertical bag of Copper Foil on insulating barrier 2, while being reinforced to it with tinned copper wire braiding.
(3) cable is carried out into wicking process, makes Copper Foil be welded together with tincopper fuse wire braided armor.
(4) sheath extrusion molding, sheath material is polyethylene.
Claims (6)
1. a kind of semi-flexible coaxial cable, it is characterised in that including the inner wire, insulating barrier, the inner shield that set gradually from inside to outside
Layer, external shielding layer and sheath, described insulating barrier is low-density polytetrafluoroethylene film lapping layer or polyethylene foamed insulating barrier,
Described internal shield is using vertical bag or the copper foil-clad layer around packet mode, silver-plated Copper Foil clad, copper modeling thin-film cladding layer
Or aluminium plastic membrane clad, described external shielding layer is proof copper-wire braided layer, tincopper fuse wire braided armor, silver-gilt copper wire braiding layer or conjunction
Spun gold braiding layer, described internal shield and external shielding layer is welded to connect by wicking process.
2. a kind of semi-flexible coaxial cable according to claim 1, it is characterised in that described low-density polytetrafluoroethylene (PTFE) is thin
Film lapping layer adopts density for 0.5～1.9g/cm3Low-density polytetrafluoroethylene film lapping layer.
3. a kind of semi-flexible coaxial cable according to claim 2, it is characterised in that described low-density polytetrafluoroethylene (PTFE) is thin
Film lapping layer adopts density for 0.7～1.6g/cm3Low-density polytetrafluoroethylene film lapping layer.
4. a kind of semi-flexible coaxial cable according to claim 1, it is characterised in that described polyethylene foamed insulating barrier is
Extrude physically foamed pe insulation layer in the conductor or chemical blowing polyethylene layer.
5. a kind of semi-flexible coaxial cable according to claim 1, it is characterised in that described inner wire is bare copper wire, copper
Alclad line, silver-coated copper wire or tinned wird.
6. a kind of semi-flexible coaxial cable according to claim 1, it is characterised in that described sheath be fluoroplastics sheath or
Vistanex sheath.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620806671 | 2016-07-28 | ||
| CN2016208066711 | 2016-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206163193U true CN206163193U (en) | 2017-05-10 |
Family
ID=58649394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620963193.5U Active CN206163193U (en) | 2016-07-28 | 2016-08-26 | Semi -flexible coaxial cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206163193U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686484A (en) * | 2019-02-21 | 2019-04-26 | 上海立鲲光电科技有限公司 | A kind of coaxial cable and its production equipment and method |
| CN112735668A (en) * | 2020-12-04 | 2021-04-30 | 华为技术有限公司 | Coaxial cable and communication equipment |
-
2016
- 2016-08-26 CN CN201620963193.5U patent/CN206163193U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686484A (en) * | 2019-02-21 | 2019-04-26 | 上海立鲲光电科技有限公司 | A kind of coaxial cable and its production equipment and method |
| CN112735668A (en) * | 2020-12-04 | 2021-04-30 | 华为技术有限公司 | Coaxial cable and communication equipment |
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