CN204516470U - A kind of shadow data cable - Google Patents
A kind of shadow data cable Download PDFInfo
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- CN204516470U CN204516470U CN201520183774.2U CN201520183774U CN204516470U CN 204516470 U CN204516470 U CN 204516470U CN 201520183774 U CN201520183774 U CN 201520183774U CN 204516470 U CN204516470 U CN 204516470U
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- cable
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- shadow data
- data cable
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Abstract
The utility model is applicable to a kind of technical field of cable, disclose a kind of shadow data cable, comprise some bar insulation cables, conductive shielding layer, earth cable and metal screen layer, insulated cable is separate, conductive shielding layer voluble wrapping forms bunch of cables in insulated cable periphery, earth cable is wound in the periphery of whole bunch of cables, and metal screen layer is coated on the periphery of earth cable.A kind of shadow data cable that the utility model provides, screen is wrapped in the periphery of insulated cable, the interference electromagnetic wave in external world when transmitting in order to shielded signal, and earth cable is wrapped in this screen periphery, not only reduce the interference signal that insulated cable produces, and reduce the diameter of bunch of cables, thus reduce the diameter of data cable entirety, simultaneously, screen in order to isolated pulse voltage is wrapped in the periphery of earth cable, thus dual shield layer is separated from each other, avoid influencing each other of screen, substantially increase shield effectiveness.
Description
[technical field]
The utility model relates to a kind of cable, particularly a kind of shadow data cable.
[background technology]
Data cable is through being usually used in the signal transmission in electronic equipment or computer.Generally often earth cable is wound bunch of cables together with signal cable at data cable; the many employings of data cable of the prior art many signal cables and earth cable are wound cable core mutually; again at cable core periphery parcel screen or protective sleeve, to reduce line transmission attenuation constant.But this structure still has deficiency, one is in data transmission procedure, and in signal cable, the signal of different frequency always can disturb mutually, and the earth cable be mutually wound around with it can strengthen interference signal; Two is interference that data cable not only can be subject to external electromagnetic ripple, but also is likely subject to the impact of pulse voltage.
For above-mentioned technical problem, prior art adopts symmetrical structure to solve the former, and namely quantity and the signal cable of earth cable are consistent, with in and interference signal, the transmission quality of raising data cable; Adopt dual shield layer to solve the latter, isolated electromagnetic wave and pulse voltage, improve the anti-interference of data cable simultaneously.But symmetrical structure adds earth cable, the diameter of cable core entirety is increased, thus the diameter of data cable is also increased, and which increases scope shared by data cable, limit the application of data cable in the electronic equipment of compact; Meanwhile, dual shield layer to be still in the structure and to contact with each other, and both are interfered with each other in the shield.Greatly have impact on shield effectiveness.
[utility model content]
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of shadow data cable, and it is intended to solve larger, the overall technical problem that shield effectiveness is not good, transmission quality is lower of data cable diameter of the prior art.
For achieving the above object, the utility model proposes a kind of shadow data cable, comprise some bar insulation cables, conductive shielding layer, earth cable and metal screen layer, described insulated cable is separate, described conductive shielding layer voluble wrapping forms bunch of cables in insulated cable periphery, described earth cable is wound in the periphery of whole bunch of cables, and described metal screen layer is coated on the periphery of earth cable.
As preferably, the quantity of described insulated cable is two, and the mutual pair twist of described insulated cable forms insulation bundle.
As preferably, described conductive shielding layer is PET film.
As preferably, described earth cable adopts the drain wire of 0.5TC.
As preferably, described metal screen layer is aluminium foil.
As preferably, be also provided with protective sleeve in described metal screen layer periphery.
As preferably, described insulated cable adopts coaxial cable, comprise the conductor of centering and the insulating barrier of parcel conductor, described insulating barrier comprises insulation endothelium, foaming layer and insulation sheath from the inside to surface successively, and described insulation endothelium, foaming layer and insulation sheath are all inter-adhesive by extrusion die.
As preferably, the frothing percentage of described foaming layer is 50%.
As preferably, the diameter of described conductor is 0.49mm ~ 0.51mm, and the diameter of described insulated cable is 1.36mm ~ 1.40mm, and described conductive shielding layer and the thickness of metal screen layer are all no more than 1.4mm.
The beneficial effects of the utility model: compared with prior art, a kind of shadow data cable that the utility model provides, rational in infrastructure, screen is wrapped in the periphery of insulated cable, the interference electromagnetic wave in external world when transmitting in order to shielded signal, and earth cable is wrapped in this screen periphery, namely earth cable and insulated cable do not contact with each other, not only reduce the interference signal that insulated cable produces, and reduce the diameter of bunch of cables, thus reduce the diameter of data cable entirety, simultaneously, screen in order to isolated pulse voltage is wrapped in the periphery of earth cable, thus dual shield layer is separated from each other, avoid influencing each other of screen, substantially increase shield effectiveness.
Feature of the present utility model and advantage will be described in detail by reference to the accompanying drawings by embodiment.
[accompanying drawing explanation]
Fig. 1 is the generalized section of the utility model embodiment;
Fig. 2 is the generalized section of the insulated cable of the utility model embodiment.
[embodiment]
For making the purpose of this utility model, technical scheme and advantage clearly understand, below by accompanying drawing and embodiment, the utility model is further elaborated.But should be appreciated that, specific embodiment described herein, only in order to explain the utility model, is not limited to scope of the present utility model.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present utility model.
Consult Fig. 1, the utility model embodiment provides a kind of shadow data cable, comprise some bar insulation cables 1, conductive shielding layer 2, earth cable 3 and metal screen layer 4, insulated cable 1 is separate, conductive shielding layer 2 voluble wrapping forms bunch of cables in insulated cable 1 periphery, earth cable 3 is wound in the periphery of whole bunch of cables, and metal screen layer 4 is coated on the periphery of earth cable 3.
In the utility model embodiment, alternating floor conductive shielding layer 2 between insulated cable 1 and earth cable 3, thus it is inner to make the interference signal in insulated cable 1 be shielded in conductive shielding layer 2, reduce the impact of earth cable 3 on interference signal, thus ensure that the transmission quality of data cable.
Because conductive shielding layer 2 can ensure that the signal of different frequency transmits with cable within the specific limits, therefore, the producer without the need to adopting symmetrical structure to improve the transmission quality of data cable, thus can reduce the diameter of data cable entirety.Certainly, for the signal of overfrequency scope or special purpose, the producer still can adopt symmetrical structure to ensure that signal can not distortion, and now, many earth cables 3 are all wound in the periphery of whole bunch of cables.
Particularly, the quantity of insulated cable 1 is two, and insulated cable 1 mutually pair twist forms insulation bundle.Certainly, the producer can adjust the quantity of insulated cable 1 according to actual needs, is not limited in the present embodiment.
Now, the utility model embodiment is triplen, is bunch of cables, earth cable 3 and metal screen layer 4 from inside to outside successively, and wherein, the periphery of bunch of cables is coated with conductive shielding layer 2.That is, the utility model embodiment adopts conductive shielding layer 2 and this dual shield Rotating fields of metal screen layer 4, in order to shield extraneous electromagnetic wave and pulse voltage respectively, earth cable 3 is located between the two, on the one hand screen is not contacted with each other, avoid screen to influence each other, improve the shield effectiveness of dual shield layer; On the other hand, the metal screen layer 4 of shielding pulse voltage is placed in periphery, makes pulse voltage not only will pass metal screen layer 4, also will contact with earth cable 3, make pulse voltage have passed through secondary shield, improve the interference free performance of data cable pulse voltage.
Further, conductive shielding layer 2 is PET film, and earth cable 3 adopts the drain wire of 0.5TC, and metal screen layer 4 is aluminium foil.
Wherein, protective sleeve 5 can also be provided with in metal screen layer 4 periphery.
Consult Fig. 2, insulated cable 1 adopts coaxial cable, comprise the conductor 11 of centering and the insulating barrier 12 of parcel conductor 11, insulating barrier 12 comprises insulation endothelium 13, foaming layer 14 and insulation sheath 15 from the inside to surface successively, and insulation endothelium 13, foaming layer 14 and insulation sheath 15 are all inter-adhesive by extrusion die.
The insulated cable 1 of the utility model embodiment adopts three-layer co-extruded machine insulation endothelium 13, foaming layer 14 and insulation sheath 15 to be extruded simultaneously, avoids in prior art the structure adopting adhering layer inter-adhesive, improves the stability of insulating barrier 12.
Wherein, the frothing percentage of foaming layer 14 is 50%.In this kind of structure, foaming layer 14 adopts low-density polythene material, adopts XK1098 as the agent of nucleation masterbatch, makes insulated cable 1 have good pliability.
In the utility model embodiment, conductor 11 adopts diameter to be the tinned copper wire of 0.49mm ~ 0.51mm, the diameter of insulated cable 1 entirety is 1.36mm ~ 1.40mm, the thickness of conductive shielding layer 2 and metal screen layer 4 is all no more than 1.4mm, data cable is made not to be only applicable to the transfer of data of computer-internal, but also the data cube computation between the electronic equipment being applicable to compact.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace or improvement etc., all should be included within protection range of the present utility model.
Claims (9)
1. a shadow data cable, it is characterized in that: comprise some bar insulation cables (1), conductive shielding layer (2), earth cable (3) and metal screen layer (4), described insulated cable (1) is separate, described conductive shielding layer (2) voluble wrapping forms bunch of cables in insulated cable (1) periphery, described earth cable (3) is wound in the periphery of whole bunch of cables, and described metal screen layer (4) is coated on the periphery of earth cable (3).
2. a kind of shadow data cable as claimed in claim 1, is characterized in that: the quantity of described insulated cable (1) is two, and described insulated cable (1) mutually pair twist forms insulation bundle.
3. a kind of shadow data cable as claimed in claim 1, is characterized in that: described conductive shielding layer (2) is PET film.
4. a kind of shadow data cable as claimed in claim 1, is characterized in that: described earth cable (3) adopts the drain wire of 0.5TC.
5. a kind of shadow data cable as claimed in claim 1, is characterized in that: described metal screen layer (4) is aluminium foil.
6. a kind of shadow data cable according to any one of claim 1 to 5, is characterized in that: be also provided with protective sleeve (5) in described metal screen layer (4) periphery.
7. a kind of shadow data cable according to any one of claim 1 to 5, it is characterized in that: described insulated cable (1) adopts coaxial cable, comprise the conductor (11) of centering and the insulating barrier (12) of parcel conductor (11), described insulating barrier (12) comprises insulation endothelium (13), foaming layer (14) and insulation sheath (15) from the inside to surface successively, and described insulation endothelium (13), foaming layer (14) and insulation sheath (15) are all inter-adhesive by extrusion die.
8. a kind of shadow data cable as claimed in claim 6, is characterized in that: the frothing percentage of described foaming layer (14) is 50%.
9. a kind of shadow data cable as claimed in claim 6, it is characterized in that: the diameter of described conductor (11) is 0.49mm ~ 0.51mm, the diameter of described insulated cable (1) is 1.36mm ~ 1.40mm, and described conductive shielding layer (2) and the thickness of metal screen layer (4) are all no more than 1.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520183774.2U CN204516470U (en) | 2015-03-30 | 2015-03-30 | A kind of shadow data cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520183774.2U CN204516470U (en) | 2015-03-30 | 2015-03-30 | A kind of shadow data cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204516470U true CN204516470U (en) | 2015-07-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520183774.2U Expired - Fee Related CN204516470U (en) | 2015-03-30 | 2015-03-30 | A kind of shadow data cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204516470U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107799211A (en) * | 2016-09-06 | 2018-03-13 | 品威电子国际股份有限公司 | Flexible flat cable structure and flexible flat cable fixing structure for electrical connector |
-
2015
- 2015-03-30 CN CN201520183774.2U patent/CN204516470U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107799211A (en) * | 2016-09-06 | 2018-03-13 | 品威电子国际股份有限公司 | Flexible flat cable structure and flexible flat cable fixing structure for electrical connector |
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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: 20150729 |
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| CF01 | Termination of patent right due to non-payment of annual fee |