CN107732539A - A kind of computer and its protection type USB interface structure - Google Patents
A kind of computer and its protection type USB interface structure Download PDFInfo
- Publication number
- CN107732539A CN107732539A CN201710933550.2A CN201710933550A CN107732539A CN 107732539 A CN107732539 A CN 107732539A CN 201710933550 A CN201710933550 A CN 201710933550A CN 107732539 A CN107732539 A CN 107732539A
- Authority
- CN
- China
- Prior art keywords
- usb interface
- block
- protective
- protection
- fixed block
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/44—Means for preventing access to live contacts
- H01R13/447—Shutter or cover plate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5213—Covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
- H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/181—Enclosures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/06—Connectors or connections adapted for particular applications for computer periphery
Landscapes
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
The present invention proposes a kind of protection type USB interface structure, including USB interface body and protector, USB interface body one end is provided with USB interface, protector includes protective cover, protective cover has the protection chamber of both ends open, the protection end opening of chamber first is located on the outside of USB interface, protection chamber second end opening is provided with the first protective block for being used to block the protection end opening of chamber second positioned opposite, second protective block, first protective block first end is rotatablely connected by the first tumbler and protection cavity wall, second protective block first end protects cavity wall to be rotatablely connected by the second tumbler and protective cover, first the second end of protective block is bonded with the activity of second the second end of protective block.This hair at the position of USB interface and air contact by setting protector; the first protective block and the second protective block of protective cover port are blocked in installation at the protective cover port of protector; it can be very good to protecting to make troubles USB interface to external equipments such as grafting mouse, keyboards.
Description
Technical field
The present invention relates to field of computer technology, more particularly to a kind of computer and its protection type USB interface structure.
Background technology
Sci-tech product of the computer as modern society, it is a kind of modern electronic computer device for supercomputing, can
To carry out numerical computations, logical calculated can be carried out again, be that can be run according to program also with store-memory function, automatic,
The modernization intelligent electronic device of high speed processing mass data, is made up of hardware system and software systems.In each of computer
In individual hardware, one of which is it is very common that what safeguard measure USB interface, USB interface are without mostly during use
, USB interface be mostly it is exposed not only influence the attractive in appearance of computer in atmosphere, while inside can accumulate dust, and have very much can
Interface can be blocked with thing by naughty child.
The content of the invention
Based on technical problem present in background technology, the present invention proposes a kind of computer and its protection type USB interface
Structure.
A kind of protection type USB interface structure proposed by the present invention, including USB interface body and protector, USB interface sheet
Body one end is provided with USB interface, and protector includes protective cover, and protective cover has the protection chamber of both ends open, protects chamber first end
Opening is located on the outside of USB interface, and protection chamber second end opening is used to block the protection end opening of chamber second provided with positioned opposite
The first protective block, the second protective block, the first protective block first end is rotatablely connected by the first tumbler and protection cavity wall, the
Two protective block first ends protect cavity wall to be rotatablely connected by the second tumbler and protective cover, first the second end of protective block and second
The activity fitting of the end of protective block second.
Preferably, protect the first end opening of chamber upper and lower ends respectively by the first flexible connector, the second flexible connector
With the telescopic connection of USB interface.
Preferably, USB interface outer upper end is fixed with the first fixed block, and the first fixed block is provided with the first through hole, the
One flexible connector includes the second fixed block, the first spacing slide bar and the first adjustable spring, the second fixed block and is fixed on protection chamber
On inwall, the first spacing slide bar is connected with the second fixed block and is located at the second fixed block close to the first fixed block side, the first limit
The central axis of position slide bar overlaps with the central axis of the first through hole, and the diameter of the first spacing slide bar is less than the first through hole
Diameter, the first adjustable spring is sleeved on the first spacing slide bar, the first adjustable spring both ends respectively with the first fixed block, second
Fixed block connects.
Preferably, lower end is fixed with the 3rd fixed block on the outside of USB interface, and the 3rd fixed block is provided with the second through hole, the
Two flexible connectors include the 4th fixed block, the second spacing slide bar and the second adjustable spring, and the 4th fixed block is fixed on protection chamber
On inwall, the second spacing slide bar is connected with the 4th fixed block and is located at the 4th fixed block close to the 3rd fixed block side, the second limit
The central axis of position slide bar overlaps with the central axis of the second through hole, and the diameter of the second spacing slide bar is less than the second through hole
Diameter, the second adjustable spring is sleeved on the second spacing slide bar, the second adjustable spring both ends respectively with the 3rd fixed block, the 4th
Fixed block connects.
Preferably, the first protective block, second the second end of protective block are enclosed with rubber layer.
Preferably, the length of protective cover is not less than 1cm.
The present invention also proposes a kind of computer, including above-mentioned protection type USB interface structure.
The protection type USB interface structure that this hair proposes, by setting protection dress at the position of USB interface and air contact
Put, the first protective block and the second protective block for blocking protective cover port are installed at the protective cover port of protector, can be very
Good is protected USB interface, and the first protective block, the second protective block are passed through into the first tumbler, the second tumbler respectively
It is rotatably installed on protective cover, it is possible to achieve the mutual folding of the first protective block, the second protective block is set, so in the mistake used
In journey easily, will not be made troubles to external equipments such as grafting mouse, keyboards, moreover it is possible to there is good protective effect, it is practical
Property is very strong；The present invention by protective cover by the first flexible connector, the second flexible connector and the telescopic connection of USB interface, can
So that when in use, when the USB joint insertion USB interface of external equipment, the first protective block, the second protective block to be strutted first, when
First protective block, the second protective block are respectively enterd in the first accommodating groove, the second accommodating groove, by external force by protective cover along first
It is mutually clamped in spacing slide bar, the second spacing slide bar push-in USB interface, spills that USB interface, convenient mouse, keyboard etc. is external to be set
Standby grafting.
Brief description of the drawings
Fig. 1 is a kind of structural representation of protection type USB interface structure proposed by the present invention；
Fig. 2 is the structural representation of protective cover in a kind of protection type USB interface structure proposed by the present invention；
Fig. 3 is the structural representation of (the first back-moving spring in a kind of protection type USB interface structure proposed by the present invention；
Fig. 4 is the structural representation of second back-moving spring in a kind of protection type USB interface structure proposed by the present invention；
Fig. 5 is a kind of structural representation of computer proposed by the present invention.
Embodiment
Reference picture 1- Fig. 5, the present invention propose a kind of computer, including protection type USB interface structure, protection type USB interface
Structure includes USB interface body and protector；Wherein：
USB interface body one end is provided with usb 1, and upper and lower ends are respectively fixed with the first fixed block on the outside of usb 1
9th, the 3rd fixed block 10, the first fixed block 9 are provided with the first through hole 91, and the 3rd fixed block 10 is provided with the second through hole 101.
Protector includes protective cover 2, and the length of protective cover 2 is not less than 1cm, and protective cover 2 has the protection of both ends open
Chamber 21, the protection end opening of chamber 21 first is located on the outside of usb 1 and the protection end opening upper and lower ends of chamber 21 first pass through respectively
The first flexible flexible connector 4 of connector 3, second is provided with phase with the telescopic connection of usb 1, the protection end opening of chamber 21 second
To the first protective block 5, the second protective block 6 that are used to block the protection end opening of chamber 21 second of arrangement, the protection inwall of chamber 21 is provided with
For storing the first protective block 5, the first accommodating groove 22 of the second protective block 6, the second accommodating groove 23, the first end of the first protective block 5
It is rotatablely connected by the first tumbler 7 and protection chamber 21 inwall, the first end of the second protective block 6 passes through the second tumbler 8 and protection
The protection chamber 21 inwall rotation connection of cover 2, the end of the first protective block 5 second are bonded with the activity of the end of the second protective block 6 second, the first protection
Block 5, the end of the second protective block 6 second are enclosed with rubber layer.
In a particular embodiment, the first flexible connector 3 includes the second fixed block 31, the first spacing slide bar 32 and first is stretched
Contracting spring 33, the second fixed block 31 are fixed on the protection inwall of chamber 21, and the first spacing slide bar 32 is connected simultaneously with the second fixed block 31
Positioned at the second fixed block 31 close to the side of the first fixed block 9, the central axis of the first spacing slide bar 32 and the first through hole 91
Central axis is overlapped, and the diameter of the first spacing slide bar 32 is less than the diameter of the first through hole 91, and the first adjustable spring 33 is set with
On the first spacing slide bar 32, the both ends of the first adjustable spring 33 are connected with the first fixed block 9, the second fixed block 31 respectively.
In a particular embodiment, the second flexible connector 4 includes the 4th fixed block 41, the second spacing slide bar 42 and second is stretched
Contracting spring 43, the 4th fixed block 41 are fixed on the protection inwall of chamber 21, and the second spacing slide bar 42 is connected simultaneously with the 4th fixed block 41
Positioned at the 4th fixed block 41 close to the side of the 3rd fixed block 10, the central axis and the second through hole 101 of the second spacing slide bar 42
Central axis overlap, and the diameter of the second spacing slide bar 42 be less than the second through hole 101 diameter, the second 43 sets of adjustable spring
On the second spacing slide bar 42, the both ends of the second adjustable spring 43 are connected with the 3rd fixed block 10, the 4th fixed block 41 respectively.
In a particular embodiment, the first tumbler 7 includes the first fixed pin shaft 71 and (the first back-moving spring 72, and first fixes
Bearing pin 71 is rotatably installed in the first accommodating groove 22, and (the first back-moving spring 72 is sleeved on the first fixed pin shaft 71, and first resets
Spring 72 is provided with the first spring card article 721 positioned opposite, second spring card article 722, and the is fixed with the first accommodating groove 22
One fixture block 24, the first spring card article 721 fix the first fixture block 24 of interspersed connection, and second spring card article 722 fixes interspersed connection the
One protective block 5.
In a particular embodiment, the second tumbler 8 includes the second fixed pin shaft 81 and second back-moving spring 82, and second fixes
Bearing pin 81 is rotatably installed in the second accommodating groove 23, and second back-moving spring 82 is sleeved on the second fixed pin shaft 81, and second resets
Spring 82 is provided with the 3rd spring card article 821 positioned opposite, the 4th spring card article 822, and the is fixed with the second accommodating groove 23
Two fixture blocks 25, the 3rd spring card article 821 fix the second fixture block 25 of interspersed connection, and the 4th spring card article 822 fixes interspersed connection the
Two protective blocks 6.
In a particular embodiment, the coefficient of elasticity of the first adjustable spring 33 and the coefficient of elasticity phase of the second adjustable spring 43
Deng the coefficient of elasticity of (the first back-moving spring 72 is equal with the coefficient of elasticity of second back-moving spring 82, and (the first back-moving spring 72,
The coefficient of elasticity of two back-moving springs 82 is less than the first adjustable spring 33, the coefficient of elasticity of the second adjustable spring 43, and it is multiple to work as first
When position spring 72, second back-moving spring 82 reach maximum flexibility deformation, the first adjustable spring 33, the second adjustable spring 43 start to send out
Raw elastic deformation.
A kind of protection type USB interface structure proposed by the present invention, by being set at the position of usb 1 and air contact
Protector, the first protective block 5 for blocking the port of protective cover 2 and the second protection are installed at the port of protective cover 2 of protector
Block 6, be can be very good usb 1 to protecting, and the first protective block 5, the second protective block 6 are rotated by first respectively
Part 8, the second tumbler 9 are rotatably installed on protective cover 2, it is possible to achieve the mutual folding of the first protective block 5, the second protective block 6
Set, so during use easily, will not be made troubles to external equipments such as grafting mouse, keyboards, moreover it is possible to have
Good protective effect, practicality are very strong；The present invention by protective cover by the first flexible connector 3, second stretch connector 4 with
The telescopic connection of usb 1, when the USB joint insertion usb 1 of external equipment, first can be prevented first when in use
Protecting block 5, the second protective block 6 strut, when the first protective block 5, the second protective block 6 respectively enter the storage of the first accommodating groove 22, second
In groove 23, protective cover 2 is pushed into usb 1 and mutually blocked along the first spacing slide bar 32, the second spacing slide bar 42 by external force
Close, spill the grafting of the external equipment such as usb 1, convenient mouse, keyboard.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (7)
1. a kind of protection type USB interface structure, it is characterised in that including USB interface body and protector, USB interface body
One end is provided with USB interface (1), and protector includes protective cover (2), and protective cover (2) has the protection chamber (21) of both ends open, prevents
The shield end opening of chamber (21) first is located on the outside of USB interface (1), and protection chamber (21) second end opening is provided with positioned opposite be used for
The first protective block (5), the second protective block (6) of the protection end opening of chamber (21) second are blocked, the first protective block (5) first end passes through
First tumbler (7) with protection chamber (21) inwall rotation connection, the second protective block (6) first end by the second tumbler (8) with
Protective cover (2) protection chamber (21) inwall rotation connection, the end of the first protective block (5) second and the activity of the end of the second protective block (6) second
Fitting.
2. protection type USB interface structure according to claim 1, it is characterised in that on the protection end opening of chamber (21) first
Lower both ends pass through the first flexible connector (3), the second flexible connector (4) and USB interface (1) telescopic connection respectively.
3. protection type USB interface structure according to claim 2, it is characterised in that USB interface (1) outer upper end is fixed
There is the first fixed block (9), the first fixed block (9) is provided with the first through hole (91), and it is solid that the first flexible connector (3) includes second
Determine block (31), the first spacing slide bar (32) and the first adjustable spring (33), the second fixed block (31) is fixed in protection chamber (21)
On wall, the first spacing slide bar (32) is connected with the second fixed block (31) and positioned at the second fixed block (31) close to the first fixed block
(9) side, the central axis of the first spacing slide bar (32) overlaps with the central axis of the first through hole (91), and the first spacing cunning
The diameter of bar (32) is less than the diameter of the first through hole (91), and the first adjustable spring (33) is sleeved on the first spacing slide bar (32)
On, the first adjustable spring (33) both ends are connected with the first fixed block (9), the second fixed block (31) respectively.
4. protection type USB interface structure according to claim 2, it is characterised in that lower end is fixed on the outside of USB interface (1)
There is the 3rd fixed block (10), the 3rd fixed block (10) is provided with the second through hole (101), and the second flexible connector (4) includes the
Four fixed blocks (41), the second spacing slide bar (42) and the second adjustable spring (43), the 4th fixed block (41) are fixed on protection chamber
(21) on inwall, the second spacing slide bar (42) is connected with the 4th fixed block (41) and consolidated positioned at the 4th fixed block (41) close to the 3rd
Determine block (10) side, the central axis of the second spacing slide bar (42) overlaps with the central axis of the second through hole (101), and second
The diameter of spacing slide bar (42) is less than the diameter of the second through hole (101), and the second adjustable spring (43) is sleeved on the second spacing cunning
On bar (42), the second adjustable spring (43) both ends are connected with the 3rd fixed block (10), the 4th fixed block (41) respectively.
5. the protection type USB interface structure according to any one of claim 1-4, it is characterised in that the first protective block
(5), the end of the second protective block (6) second is enclosed with rubber layer.
6. the protection type USB interface structure according to any one of claim 1-4, it is characterised in that the length of protective cover (2)
Degree is not less than 1cm.
7. a kind of computer, it is characterised in that including the protection type USB interface structure as described in claim any one of 1-6.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610969316.0A CN106549257A (en) | 2016-11-06 | 2016-11-06 | A kind of USB interface of computer structure with preventer |
| CN2016109693160 | 2016-11-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107732539A true CN107732539A (en) | 2018-02-23 |
| CN107732539B CN107732539B (en) | 2019-06-04 |
Family
ID=58394027
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610969316.0A Pending CN106549257A (en) | 2016-11-06 | 2016-11-06 | A kind of USB interface of computer structure with preventer |
| CN201710933971.5A Active CN107742800B (en) | 2016-11-06 | 2017-10-10 | A kind of protection type USB interface structure |
| CN201710933550.2A Active CN107732539B (en) | 2016-11-06 | 2017-10-10 | A kind of computer and its protection type USB interface structure |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610969316.0A Pending CN106549257A (en) | 2016-11-06 | 2016-11-06 | A kind of USB interface of computer structure with preventer |
| CN201710933971.5A Active CN107742800B (en) | 2016-11-06 | 2017-10-10 | A kind of protection type USB interface structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN106549257A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109890162A (en) * | 2019-04-12 | 2019-06-14 | Oppo广东移动通信有限公司 | The housing unit and electronic equipment of electronic equipment |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019061229A1 (en) * | 2017-09-29 | 2019-04-04 | 深圳传音通讯有限公司 | Usb interface sealing device and terminal |
| CN107919566B (en) * | 2017-11-16 | 2023-09-01 | 镇江奥博通信设备有限公司 | Network electric appliance connector with protection function |
| CN108321611A (en) * | 2018-01-29 | 2018-07-24 | 宋盈盈 | A kind of USB charging interface |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1499675A (en) * | 2002-11-05 | 2004-05-26 | ̩�Ƶ�������˾ | Electrical connector with shutter |
| CN201700001U (en) * | 2009-12-25 | 2011-01-05 | 杭州谱菲通信技术有限公司 | Network card with telescopic hidden type USB head cover |
| US20120270440A1 (en) * | 2011-04-22 | 2012-10-25 | John Mezzalingua Associates, Inc. | Coaxial cable connector having slotted post member |
| CN104795689A (en) * | 2015-05-11 | 2015-07-22 | 海盐壳锐水族用品有限公司 | Power supply equipment with telescopic dustproof cover and use method of power supply equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104658786A (en) * | 2013-11-21 | 2015-05-27 | 上海航空电器有限公司 | Automatic reset type protective cover |
| CN205172262U (en) * | 2015-10-26 | 2016-04-20 | 宁波华德汽车零部件有限公司 | Oil filler hole door damping opening mechanism |
-
2016
- 2016-11-06 CN CN201610969316.0A patent/CN106549257A/en active Pending
-
2017
- 2017-10-10 CN CN201710933971.5A patent/CN107742800B/en active Active
- 2017-10-10 CN CN201710933550.2A patent/CN107732539B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1499675A (en) * | 2002-11-05 | 2004-05-26 | ̩�Ƶ�������˾ | Electrical connector with shutter |
| CN201700001U (en) * | 2009-12-25 | 2011-01-05 | 杭州谱菲通信技术有限公司 | Network card with telescopic hidden type USB head cover |
| US20120270440A1 (en) * | 2011-04-22 | 2012-10-25 | John Mezzalingua Associates, Inc. | Coaxial cable connector having slotted post member |
| CN104795689A (en) * | 2015-05-11 | 2015-07-22 | 海盐壳锐水族用品有限公司 | Power supply equipment with telescopic dustproof cover and use method of power supply equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109890162A (en) * | 2019-04-12 | 2019-06-14 | Oppo广东移动通信有限公司 | The housing unit and electronic equipment of electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107742800A (en) | 2018-02-27 |
| CN107742800B (en) | 2019-08-23 |
| CN107732539B (en) | 2019-06-04 |
| CN106549257A (en) | 2017-03-29 |
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