CN202434261U - Cable - Google Patents
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- Publication number
- CN202434261U CN202434261U CN2012200597589U CN201220059758U CN202434261U CN 202434261 U CN202434261 U CN 202434261U CN 2012200597589 U CN2012200597589 U CN 2012200597589U CN 201220059758 U CN201220059758 U CN 201220059758U CN 202434261 U CN202434261 U CN 202434261U
- Authority
- CN
- China
- Prior art keywords
- cable
- heart yearn
- power supply
- cable according
- core line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a cable (100) which comprises core wires, a metallic shielding layer enclosed outside the core wires, and an insulating sheath (51) coated outside the metallic shielding layer, wherein the core wires only include two signal core wires and a power core wire (21); and the metallic shielding layer comprises an inner metallic shielding layer (41) and an outer metallic shielding layer (42) which are respectively used for grounded shielding of a power supply and a cable. The cable provided by the utility model has reduced core wires therein, as a result, the overall size of the cable is reduced and the cable is more flexible.
Description
Technical field
The utility model relates to a kind of cable, refers in particular to a kind of USB cable.
Background technology
Along with the computer hardware develop rapidly; Ancillary equipment is increasing; Keyboard, mouse, modulator-demodulator, printer, scanner are well-known already; Digital camera, MP3/MP4 walkman come one after another, and so many equipment all is to insert through the USB interface of standardization, unification and personal computer; As everyone knows, USB is the abbreviation of English Universal Serial BUS, and Chinese implication is " USB ".Current, the application of USB interface is very extensive, and its development trend has substantial connection with between the user naturally.USB interface is since 1.0 versions come out; Its transmission rate is merely 12Mbps, is improved to 2.0 versions thereafter, and this USB2.0 has been increased to 480Mbps with data transfer between devices speed; Than USB1.0 standard fast about 40 times; The raising of speed means exactly that for user's largest benefit the user can use external equipment more efficiently, and the peripheral equipment with multiple speed can be connected on the circuit of USB2.0, and bottleneck effect takes place when need not the concern of data transmission.
USB has four transmission lines according to agreement one, and wherein two are used for transmitting the 5v power supply, and two other is a pair of, is used for transmitting the difference serial signal.The standard transmission cable that meets the USB host-host protocol has generally included two power lines and two signal line.Therefore the standard transmission cable is more widely used owing to have function of supplying power.For example; A kind of USB cable is arranged in the prior art; It comprises that two specifications are the heart yearn that is used for transmission signals and two heart yearns that are used to transmit power supply that specification is 24AWG of 28AWG, and signal core line and power supply heart yearn outside coat screen, and the screen outside then is the outer quilt of insulation.This cable external diameter is about 3.8mm, and because internal core is more, causes the intensity of cable big relatively, wire rod flexible less.
The utility model content
The purpose of the utility model provides a kind of cable with reduced size and ability transmission signals and power supply.
For reaching aforementioned purpose, the utility model adopts following technical scheme:
A kind of cable comprises the metal screen layer that heart yearn is outer with being centered around heart yearn and is coated on the outer insulation sheath of metal screen layer; It is characterized in that: said heart yearn only comprises the power supply heart yearn of two bars heart yearns and a transmission positive electricity, and said metal screen layer comprises inner metal shield layer, the outer metal screen layer that is respectively applied for power ground and the shielding of cable integral ground.
As the further improvement of the utility model, said inner metal shield layer, outer metal screen layer are coaxial arrangement.
As the further improvement of the utility model, said power supply heart yearn, two bars heart yearns cable along the line extend axially and cable radially triangularity arrange.
As the further improvement of the utility model, said inner metal shield layer is used to transmit negative electricity.
As the further improvement of the utility model, said power supply heart yearn is thick than signal core line.
As the further improvement of the utility model, the specification of said power supply heart yearn is 24AWG, and the specification of signal core line is 28AWG.
As the further improvement of the utility model, said signal core line is used for differential signal transmission, the source core line transmission+5V voltage of transmitting electricity.
As the further improvement of the utility model, the external diameter of said cable greater than 3.1mm less than 3.3mm.
As the further improvement of the utility model, the clad metal aluminium foil is gone back in said signal core line, power supply heart yearn outside.
Compared with prior art, the utility model cable adopts inside and outside double-level-metal screen, reduces the quantity of cable internal core wire, and the cable overall dimensions is reduced, and can make cable soft more; In addition, double-deck metal screen layer can also effectively improve shield effectiveness.
Description of drawings
Fig. 1 is the schematic cross-section of the utility model cable.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, the utility model is described in detail below in conjunction with accompanying drawing and specific embodiment.
As shown in Figure 1; The utility model cable 100 is the USB cable; Cable 100 comprises a pair of signal core line 11,12 that is used for differential signal transmission; Be used to transmit the power supply heart yearn 21 of positive electricity (+5V voltage), the axial consistent direction of signal core line 11,12 and power supply heart yearn 21 edges and cable 100 is extended, and two bars heart yearns 11,12 and power supply heart yearn 21 triangularity that makes progress in the footpath of cable 100 is arranged. Signal core line 11,21 and power supply heart yearn 21 include the metal inner wire and are coated on the outer core insulation layer of inner wire.The metal inner wire can be materials such as copper, aluminium, and the core insulation layer can be the PE insulating material.The specification of signal core line 11,21 is 28AWG, and the specification of power supply heart yearn 21 is 24AWG, and power supply heart yearn 21 wants thick than signal core line 11,21.
The heart yearn of the utility model cable 100 only comprises the power supply heart yearn 21 of aforementioned two bars heart yearns 11,12 and an aforementioned transmission positive electricity, has reduced the quantity of cable internal core wire.
Inner metal shield layer 41, outer metal screen layer 42 are respectively applied for as the transmission negative electricity and realize power ground and the whole earth shield of cable.Adopt inside and outside double-level-metal screen can effectively improve shield effectiveness.
The external diameter of cable 100 be 3.2+/-0.1mm, the external diameter of cable more of the prior art (3.8+/-0.1mm) bigger reducing arranged, cable 100 is soft more simultaneously.In addition, cable structure is simple relatively, is convenient to manufacture.
In sum; More than be merely the preferred embodiment of the utility model; Should not limit the scope of the utility model with this; Be that every simple equivalent of being done according to the utility model claims and utility model description changes and modifies, all should still belong in the scope that the utility model patent contains.
Claims (9)
1. a cable comprises the metal screen layer that heart yearn is outer with being centered around heart yearn and is coated on the outer insulation sheath of metal screen layer; It is characterized in that: said heart yearn only comprises the power supply heart yearn of two bars heart yearns and a transmission positive electricity, and said metal screen layer comprises inner metal shield layer, the outer metal screen layer that is respectively applied for power ground and the shielding of cable integral ground.
2. cable according to claim 1 is characterized in that: said inner metal shield layer, outer metal screen layer are coaxial arrangement.
3. cable according to claim 1 is characterized in that: said power supply heart yearn, two bars heart yearns cable along the line extend axially and cable radially triangularity arrange.
4. cable according to claim 1 is characterized in that: said inner metal shield layer is used to transmit negative electricity.
5. cable according to claim 1 is characterized in that: said power supply heart yearn is thick than signal core line.
6. cable according to claim 5 is characterized in that: the specification of said power supply heart yearn is 24AWG, and the specification of signal core line is 28AWG.
7. cable according to claim 1 is characterized in that: said signal core line is used for differential signal transmission, the source core line transmission+5V voltage of transmitting electricity.
8. cable according to claim 1 is characterized in that: the external diameter of said cable greater than 3.1mm less than 3.3mm.
9. cable according to claim 1 is characterized in that: the clad metal aluminium foil is gone back in said signal core line, power supply heart yearn outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200597589U CN202434261U (en) | 2012-02-23 | 2012-02-23 | Cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200597589U CN202434261U (en) | 2012-02-23 | 2012-02-23 | Cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202434261U true CN202434261U (en) | 2012-09-12 |
Family
ID=46783689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200597589U Expired - Fee Related CN202434261U (en) | 2012-02-23 | 2012-02-23 | Cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202434261U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464949A (en) * | 2014-12-17 | 2015-03-25 | 深圳市蜀星光实业有限公司 | Multiplex type combined cable applied to security and protection monitoring and wiring method thereof |
| CN104575851A (en) * | 2013-10-17 | 2015-04-29 | 大连德昌线缆有限公司 | Bus provided with mutually replaced return cables and shielding layers |
| CN106601364A (en) * | 2015-10-19 | 2017-04-26 | 富士康(昆山)电脑接插件有限公司 | USB-Type C cable |
| CN113674916A (en) * | 2020-05-14 | 2021-11-19 | 华为技术有限公司 | Data transmission cable and related equipment |
-
2012
- 2012-02-23 CN CN2012200597589U patent/CN202434261U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575851A (en) * | 2013-10-17 | 2015-04-29 | 大连德昌线缆有限公司 | Bus provided with mutually replaced return cables and shielding layers |
| CN104464949A (en) * | 2014-12-17 | 2015-03-25 | 深圳市蜀星光实业有限公司 | Multiplex type combined cable applied to security and protection monitoring and wiring method thereof |
| CN106601364A (en) * | 2015-10-19 | 2017-04-26 | 富士康(昆山)电脑接插件有限公司 | USB-Type C cable |
| CN113674916A (en) * | 2020-05-14 | 2021-11-19 | 华为技术有限公司 | Data transmission cable and related equipment |
| CN113674916B (en) * | 2020-05-14 | 2023-04-28 | 华为技术有限公司 | Data transmission cable and related equipment |
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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: 20120912 Termination date: 20150223 |
|
| EXPY | Termination of patent right or utility model |