CN110469579A - A kind of reciprocating lock-stopping hinge - Google Patents
A kind of reciprocating lock-stopping hinge Download PDFInfo
- Publication number
- CN110469579A CN110469579A CN201910939262.7A CN201910939262A CN110469579A CN 110469579 A CN110469579 A CN 110469579A CN 201910939262 A CN201910939262 A CN 201910939262A CN 110469579 A CN110469579 A CN 110469579A
- Authority
- CN
- China
- Prior art keywords
- lock
- closing piece
- rotary drive
- lock tooth
- stopping hinge
- 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.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C17/00—Sofas; Couches; Beds
- A47C17/86—Parts or details for beds, sofas or couches only not fully covered in a single one of the sub-groups A47C17/02, A47C17/04, A47C17/38, A47C17/52, A47C17/64, or A47C17/84; Drawers in or under beds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/10—Arrangements for locking
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nursing (AREA)
- Pivots And Pivotal Connections (AREA)
- Hinges (AREA)
Abstract
The present invention is a kind of reciprocating lock-stopping hinge, belong to sofa accessory technical field, it includes being run using jam plate, movable closing piece, elastic compression device and the single deck tape-recorder bit pattern of rotary drive plate arc locked groove cooperation so that engaging or being detached between lock tooth, effective operation is carried out on the different directions of y1 and h1 to obtain lockup state and return shelves state, the present invention runs smoothly, crosses shelves change it is smooth it is flexible, easy for assembly and operation angle is big.
Description
Technical field
The invention belongs to sofa accessory technical fields, refer to a kind of reciprocating lock-stopping hinge.
Background technique
With the modernization development of society, sofa has stepped into every family, and lock-stopping hinge can allow sofa to exist
The angle of the most comfortable is adjusted in certain angle.Existing sofa hinge has following three due to the not perfect of structure:
First, when rotating operation, is unstable, and stability is poor, easy break-down；Second, structure is complicated, cross shelves change it is not flexible, processing and
It is big to assemble difficulty；Third, arc locked groove are arranged inside with the lock tooth on movable closing piece, and operation angle is restricted.
Summary of the invention
The object of the present invention is to provide one kind to run smoothly, cross shelves change it is smooth it is flexible, easy for assembly and operation angle is big
Reciprocating lock-stopping hinge.
The object of the present invention is achieved like this:
A kind of reciprocating lock-stopping hinge, including jam plate, movable closing piece, elastic compression device and rotary drive plate, jam plate and rotation
Driving plate is hinged by locating shaft, and the jam plate includes the left locking plate a and right locking plate b being hinged, in left locking plate a and right lock
An arc locked groove is offered on piece b, and the stroke to partially overlap with the arc locked groove is offered on the rotary drive plate
Slot, the stroke groove include neutral gear portion a and cross shelves portion b, and the movable closing piece is embedded in two arc locked grooves and stroke groove simultaneously
It is interior；
The first lock tooth a is formed in the outer arc side of arc locked groove, and the second lock tooth a is provided on the outer end face of movable closing piece,
The elastic compression device, which acts on movable closing piece, engages the second lock tooth a with the first lock tooth a on the jam plate；
The first lock tooth a includes tip surface line and root surface line, and the neutral gear portion a is located at the outer of root surface line
The inside that shelves portion b is located at tip surface line is crossed in side；When outer masterpiece is on rotary drive plate, rotary drive plate is around positioning
Axis is that the direction y rotating operation is done in axle center, and when movable closing piece is located at neutral gear portion a, the engagement of the second lock tooth a and the first lock tooth a are done
Relative motion, when the operation of movable closing piece was stuck in shelves portion b, the second lock tooth a is detached from the first lock tooth a；In outer masterpiece for rotating
When in driving plate, rotary drive plate is that axle center is done during the direction h rotates around locating shaft, and movable closing piece is in elastic compression
Neutral gear portion a is fallen back under the elastic force of device, the second lock tooth a and the first lock tooth a are meshed at this time.
In above-mentioned reciprocating lock-stopping hinge, the elastic compression device is torque spring, torque spring fixed setting
On rotary drive plate, torque spring, which is resisted against on the inner face of movable closing piece, forces the second lock tooth a to nibble with the first lock tooth a phase
It closes.
In above-mentioned reciprocating lock-stopping hinge, there are two spring fixed columns for setting on the rotary drive plate, described
The both ends of torque spring be fixed on the spring fixed column, the medial end portions of torque spring are compressed part, which abuts
On the inner face of the movable closing piece.
In above-mentioned reciprocating lock-stopping hinge, the compressed part is face contact with the inner face place of abutting of movable closing piece
Structure.
In above-mentioned reciprocating lock-stopping hinge, there are two spring fixed columns for setting on the rotary drive plate, described
One end of torque spring be that compressed part, compressed part are connected on the inner face of the movable closing piece, the other end of torque spring
It is resisted against on one of spring fixed column, the medial end portions of the torque spring are fixed on another spring fixed column.
In above-mentioned reciprocating lock-stopping hinge, the compressed part is in the contact structures that M type is formed, with movable closing piece
It is more than two point contact structures at inner face abutting.
In above-mentioned reciprocating lock-stopping hinge, where the plane and gear centre line where the flank of tooth of the activity closing piece
Plane make an angle alpha respectively and angle β, wherein the angle of angle α be less than angle β angle.
In above-mentioned reciprocating lock-stopping hinge, the engagement relative motion angle of the second lock tooth a and the first lock tooth a
It is 90 ° -270 °.
In above-mentioned reciprocating lock-stopping hinge, the rotary drive plate includes symmetrically arranged left driving piece and right drive
Movable plate, left driving piece and right driving piece are separately positioned on the outside of left locking plate a and right locking plate b, in left driving piece and right driving piece
Outside be respectively arranged with left cover cover and right cover cover.
In above-mentioned reciprocating lock-stopping hinge, it is provided with positioning protrusion on the left cover cover and right cover cover, on a left side
Driving piece and right driving on piece offer card slot compatible with positioning protrusion or card hole c.
In above-mentioned reciprocating lock-stopping hinge, the left cover cover, left driving piece, left locking plate a, right locking plate b, right driving
Piece and right cover cover are successively threaded through on the locating shaft.
In above-mentioned reciprocating lock-stopping hinge, be provided in the middle part of the left cover cover and right cover cover be recessed inwardly it is convex
Platform.
The present invention compared with prior art it is prominent and beneficial have the technical effect that the present invention run smoothly, cross shelves change it is smooth
Flexibly, easy for assembly and operation angle is big.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is structural blast schematic diagram of the invention.
Fig. 3 is partial structure diagram of the invention.
Fig. 4 is the partial enlarged view in the portion F in Fig. 3 of the present invention.
Fig. 5 is the structural schematic diagram of arc locked groove in the present invention.
Fig. 6 is the partial structure diagram in the present invention with traffic direction.
Fig. 7 is structural blast schematic diagram one of the invention.
Fig. 8 is structural schematic diagram one of the invention.
Fig. 9 is the structural schematic diagram one of the movable closing piece of structure of the invention.
Figure 10 is the partial enlarged view in Fig. 9 of the present invention at A.
Meaning represented by figure label:
1- jam plate；The left locking plate of 11a-；The right locking plate of 11b-；1100- arc locked groove；1100a- first locks tooth；2- activity closing piece；
2100a- second locks tooth；3- elastic compression device；31- compressed part；4- rotary drive plate；4100- stroke groove；4100a- neutral gear
Portion;4100b- crosses a grade portion;4100c- card slot or card hole；The left driving piece of 41-；The right driving piece of 42-；5- locating shaft；6- spring is fixed
Column；71- left cover cover；72- right cover cover；7- positioning protrusion；7100- boss；8- tip surface line；9- root surface line.
Specific embodiment
The invention will be further described combined with specific embodiments below:
A kind of reciprocating lock-stopping hinge, as Figure 1-10 shows, including jam plate 1, movable closing piece 2, elastic compression device 3 and rotation are driven
Movable plate 4, jam plate 1 and rotary drive plate 4 are hinged by locating shaft 5, the jam plate 1 include the left locking plate 11a being hinged and
Right locking plate 11b, offers an arc locked groove 1100 on left locking plate 11a and right locking plate 11b, on the rotary drive plate 4
Offer the stroke groove 4100 to partially overlap with the arc locked groove 1100, the stroke groove 4100 include neutral gear portion 4100a and
Shelves portion 4100b is crossed, the movable closing piece 2 is embedded in two arc locked grooves 1100 and stroke groove 4100 simultaneously；
The first lock tooth 1100a is formed in the outer arc side of arc locked groove 1100, and is provided on the outer end face of movable closing piece 2
Two lock tooth 2100a, the elastic compression device 3, which acts on movable closing piece 2, to be made on the second lock tooth 2100a and the jam plate 1
First lock tooth 1100a engagement；
The first lock tooth 1100a includes tip surface line 8 and root surface line 9, and the neutral gear portion 4100a is located at tooth root
The inside that shelves portion 4100b is located at tip surface line 8 is crossed in the outside of camberline 9；When outer masterpiece is on rotary drive plate 4, rotation
Turning driving plate 4 around locating shaft 5 is that the direction y1 rotating operation is done in axle center, when movable closing piece 2 is located at neutral gear portion 4100a, second
Relative motion is done in the engagement of the lock of lock tooth 2100a and first tooth 1100a, when the operation of movable closing piece 2 was stuck in shelves portion 4100b, the
Two lock tooth 2100a are detached from the first lock tooth 1100a；When outer masterpiece is on rotary drive plate 4, rotary drive plate 4 is around positioning
Axis 5 is that axle center is done during the direction h1 rotates, and movable closing piece 2 falls back to neutral gear portion under the elastic force of elastic compression device 3
4100a, the second lock tooth 2100a and the first lock tooth 1100a are meshed at this time.In the present invention, the direction y1 rotating operation is positioning lock
Only direction, the direction h1 rotating operation are go back to shelves direction, and needing back shelves to carry out reciprocating action need to first make the movable operation of closing piece 2 to mistake
Detent is carried out on shelves portion 4100b.The present invention takes single deck tape-recorder bit pattern to design, that is, crosses shelves portion 4100b, breaks through the limitation of gear section and lacks
It falls into.Overall structure shift of the present invention is quickly smooth flexible, runs accuracy, symmetry and center allelism are very good.
Preferably, the elastic compression device 3 is torque spring, torque spring is fixed on rotary drive plate 4,
Torque spring, which is resisted against on the inner face of movable closing piece 2, forces the second lock tooth 2100a to be meshed with the first lock tooth 1100a.It is described
Rotary drive plate 4 on setting there are two spring fixed column 6, the both ends of the torque spring are fixed on the spring fixed column
On 6, the medial end portions of torque spring are compressed part 31, which is connected on the inner face of the movable closing piece 2.Described
Compressed part 41 is surface contact structure with the inner face place of abutting of movable closing piece 2.In the present invention, torque spring is Leftward/rightward rotating bullet
Spring, still maintains a horizontal plane running when can guarantee spring stress, increase forced area using two the number of turns springs, improve stress
Balanced and stability.
Preferably, spring fixed column 6 there are two being arranged on the rotary drive plate 4, the one of the torque spring
End is compressed part 31, compressed part 31 is connected on the inner face of the movable closing piece 2, and the other end of torque spring is against wherein
On one spring fixed column 6, the medial end portions of the torque spring are fixed on another spring fixed column 6；The compressed part
31 contact structures formed in M type are more than two point contact structures with the inner face place of abutting of movable closing piece 2.This hair
Bright compressed part uses Multi-contact, but 1 points are contacted, so that abutting more with the inner face of movable closing piece 2
Stablize,
Stress equalization and stability are improved, guarantees torque spring without departing from operation area；Meanwhile improving readjustment shelves compatible degree and steady
Qualitative, the shelves process guarantee of returning does not occur trip stop phenomenon, and the torque spring of above-mentioned technical proposal can use thinner diameter, this reality
The preferred diameter 0.6mm spring diameter of example is applied, noise when rotation is significantly reduced, meanwhile, improve the spirit of product Secondary Design
Activity, shape size can be adjusted flexibly.
Referring to Fig. 9 and Figure 10, preferably, plane and gear centre line place where the flank of tooth of the activity closing piece 2
Plane make an angle alpha respectively and angle β, wherein the angle of angle α be less than angle β angle.Movable closing piece 2 of the invention is adopted
It can reinforce the occlusion degree of tooth with above scheme, not take off tooth, increase product pressure-bearing dynamics.
Preferably, the engagement relative motion angle of the described second lock tooth 2100a and the first lock tooth 1100a be 90 °-
270°.Operation angle can be further limited in 90 ° -180 °.The present invention is equipped with outwardly using movable closing piece 2, no
Only enable to the assembling of entire product more convenient, so that operation angle is bigger, and operation is more steady, it is more suitable to cross shelves
It is smooth flexible.
Preferably, the rotary drive plate 4 includes symmetrically arranged left driving piece 41 and right driving piece 42, left driving
Piece 41 and right driving piece 42 are separately positioned on the outside of left locking plate 11a and right locking plate 11b, in left driving piece 41 and right driving piece 42
Outside be respectively arranged with left cover cover 71 and right cover cover 72.The left cover cover 71 and right cover cover 72 being arranged in the present invention can prevent bullet
Power pressing device 3 preferred herein is that torque spring and movable closing piece 2 are axial from normal running track in the process of running
Be detached from, improve traveling comfort, while also playing the effect of protection elastic compression device 3 and movable closing piece 2, have compared with
Good dust-proof effect.
Preferably, positioning protrusion 7 is provided on the left cover cover 71 and right cover cover 72, on left driving piece 41 and the right side
Card slot compatible with positioning protrusion 7 or card hole 4100c are offered on driving piece 42.In the present invention, in the process of running, use
Torque spring with left cover cover 71 and when right cover cover 72, torque spring can be further ensured that without departing from so that torsion
Spring is abutted against with movable closing piece 2 always.
Preferably, the left cover cover 71, left driving piece 41, left locking plate 11a, right locking plate 11b, right driving piece 42 and the right side
Housing 72 is successively threaded through on the locating shaft 5.
Preferably, the middle part of the left cover cover 71 and right cover cover 72 is provided with the boss 7100 being recessed inwardly.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore: it is all according to
The equivalence changes that structure of the invention, shape, principle are done, should all be covered by within protection scope of the present invention.
Claims (12)
1. a kind of reciprocating lock-stopping hinge, including jam plate (1), movable closing piece (2), elastic compression device (3) and rotary drive plate
(4), jam plate (1) and rotary drive plate (4) are hinged by locating shaft (5), it is characterised in that: the jam plate (1) includes phase
Hinged left locking plate (11a) and right locking plate (11b), offers an arc locked groove on left locking plate (11a) and right locking plate (11b)
(1100), the stroke groove (4100) to partially overlap with the arc locked groove (1100) is offered on the rotary drive plate (4),
The stroke groove (4100) includes neutral gear portion (4100a) and crosses shelves portion (4100b), and the movable closing piece (2) is embedded in two simultaneously
In a arc locked groove (1100) and stroke groove (4100)；
The first lock tooth (1100a) is formed in the outer arc side of arc locked groove (1100), is set on the outer end face of movable closing piece (2)
Be equipped with the second lock tooth (2100a), the elastic compression device (3) act on movable closing piece (2) make the second lock tooth (2100a) with
The first lock tooth (1100a) engagement on the jam plate (1)；
First lock tooth (1100a) includes tip surface line (8) and root surface line (9), the neutral gear portion (4100a)
Positioned at the outside of root surface line (9), the inside that shelves portion (4100b) is located at tip surface line (8) is crossed；In outer masterpiece for rotating
When in driving plate (4), rotary drive plate (4) is that the direction y1 rotating operation is done in axle center around locating shaft (5), when movable closing piece (2)
When positioned at neutral gear portion (4100a), relative motion is done in the engagement of the second lock tooth (2100a) and the first lock tooth (1100a), works as active lock
When block (2) operation was stuck in shelves portion (4100b), the second lock tooth (2100a) is detached from the first lock tooth (1100a)；It is used in outer masterpiece
When on rotary drive plate (4), rotary drive plate (4) is that activity during the direction h1 rotates is done in axle center around locating shaft (5)
Closing piece (2) falls back to neutral gear portion (4100a) under the elastic force of elastic compression device (3), at this time the second lock tooth (2100a) and first
Lock tooth (1100a) is meshed.
2. reciprocating lock-stopping hinge according to claim 1, it is characterised in that: the elastic compression device (3) is torsion
Spring, torque spring are fixed on rotary drive plate (4), and torque spring, which is resisted against on the inner face of movable closing piece (2), compels
Make the second lock tooth (2100a) lock tooth (1100a) with first to be meshed.
3. reciprocating lock-stopping hinge according to claim 2, it is characterised in that: be arranged on the rotary drive plate (4)
There are two spring fixed column (6), the both ends of the torque spring are fixed on the spring fixed column (6), torque spring
Medial end portions are compressed part (31), which is connected on the inner face of the movable closing piece (2).
4. reciprocating lock-stopping hinge according to claim 3, it is characterised in that: the compressed part (41) and movable closing piece
It (2) is surface contact structure at inner face abutting.
5. reciprocating lock-stopping hinge according to claim 2, it is characterised in that: be arranged on the rotary drive plate (4)
There are two spring fixed column (6), one end of the torque spring is compressed part (31), compressed part (31) is connected to the activity
On the inner face of closing piece (2), the other end of torque spring is resisted against on one of spring fixed column (6), the torsion bullet
The medial end portions of spring are fixed on another spring fixed column (6).
6. reciprocating lock-stopping hinge according to claim 5, it is characterised in that: the compressed part (31) is formed in M type
Contact structures are more than two point contact structures with the inner face place of abutting of movable closing piece (2).
7. reciprocating lock-stopping hinge according to claim 1-6, it is characterised in that: the activity closing piece (2)
The plane where plane and gear centre line where the flank of tooth makes an angle alpha and angle β respectively, wherein the angle of angle α is less than folder
The angle of angle beta.
8. reciprocating lock-stopping hinge according to claim 1, it is characterised in that: described second lock tooth (2100a) and the
The engagement relative motion angle of one lock tooth (1100a) is 90 ° -270 °.
9. reciprocating lock-stopping hinge according to claim 1, it is characterised in that: the rotary drive plate (4) includes pair
Claim the left driving piece (41) and right driving piece (42) of setting, left driving piece (41) and right driving piece (42) are separately positioned on left locking plate
The outside of (11a) and right locking plate (11b) are respectively arranged with left cover cover on the outside of left driving piece (41) and right driving piece (42)
(71) and right cover cover (72).
10. reciprocating lock-stopping hinge according to claim 9, it is characterised in that: the left cover cover (71) and right cover cover
(72) it is provided with positioning protrusion (7) on, is offered on left driving piece (41) and right driving piece (42) and positioning protrusion (7) phase
The card slot or card hole (4100c) of adaptation.
11. reciprocating lock-stopping hinge according to claim 10, it is characterised in that: the left cover cover (71), left driving
Piece (41), left locking plate (11a), right locking plate (11b), right driving piece (42) and right cover cover (72) are successively threaded through the locating shaft
(5) on.
12. the reciprocating lock-stopping hinge according to claim 9 or 10 or 11, it is characterised in that: the left cover cover (71)
With the boss (7100) being recessed inwardly is provided in the middle part of right cover cover (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/113639 WO2021062905A1 (en) | 2019-05-22 | 2019-10-28 | Reciprocating-type locking hinge |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019104276028 | 2019-05-22 | ||
| CN201910427602.8A CN110094409A (en) | 2019-05-22 | 2019-05-22 | A kind of reciprocating lock-stopping hinge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110469579A true CN110469579A (en) | 2019-11-19 |
Family
ID=67448878
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910427602.8A Pending CN110094409A (en) | 2019-05-22 | 2019-05-22 | A kind of reciprocating lock-stopping hinge |
| CN201910939262.7A Pending CN110469579A (en) | 2019-05-22 | 2019-09-30 | A kind of reciprocating lock-stopping hinge |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910427602.8A Pending CN110094409A (en) | 2019-05-22 | 2019-05-22 | A kind of reciprocating lock-stopping hinge |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN110094409A (en) |
| WO (1) | WO2021062905A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094409A (en) * | 2019-05-22 | 2019-08-06 | 浙江天台天美达机电有限公司 | A kind of reciprocating lock-stopping hinge |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5921946A (en) * | 1997-10-22 | 1999-07-13 | Smith & Nephew, Inc. | Joint brace hinges |
| CN206166374U (en) * | 2016-08-29 | 2017-05-17 | 浙江天台天美达机电有限公司 | Sofa headrest hinge |
| US20180274296A1 (en) * | 2017-03-21 | 2018-09-27 | Tricam Industries, Inc. | Adjustable hinge for a multi-position ladder |
| CN207935272U (en) * | 2017-12-16 | 2018-10-02 | 浙江天台天美达机电有限公司 | A kind of sofa headrest hinge of band rebound |
| CN207830357U (en) * | 2018-02-01 | 2018-09-07 | 佛山市博贸五金制品有限公司 | A kind of sofa handrail hinge |
| CN210565729U (en) * | 2019-05-22 | 2020-05-19 | 浙江天台天美达机电有限公司 | Reciprocating type locking hinge |
| CN110094409A (en) * | 2019-05-22 | 2019-08-06 | 浙江天台天美达机电有限公司 | A kind of reciprocating lock-stopping hinge |
-
2019
- 2019-05-22 CN CN201910427602.8A patent/CN110094409A/en active Pending
- 2019-09-30 CN CN201910939262.7A patent/CN110469579A/en active Pending
- 2019-10-28 WO PCT/CN2019/113639 patent/WO2021062905A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021062905A1 (en) | 2021-04-08 |
| CN110094409A (en) | 2019-08-06 |
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