CN208831633U - A kind of dedicated tooth band one gear of electric miniature - Google Patents
A kind of dedicated tooth band one gear of electric miniature Download PDFInfo
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- CN208831633U CN208831633U CN201821138153.2U CN201821138153U CN208831633U CN 208831633 U CN208831633 U CN 208831633U CN 201821138153 U CN201821138153 U CN 201821138153U CN 208831633 U CN208831633 U CN 208831633U
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Abstract
The utility model discloses a kind of dedicated tooth band one gears of electric miniature, including input shaft and output shaft arranged in parallel up and down, input shaft is equipped with the first, second ratchet, effective direction of rotation of first, second ratchet is opposite, output shaft is equipped with the first, second transmission gear, and the first, second transmission gear, which respectively passes through coaxially clamping disk, to be realized and be fixedly connected with output shaft；First, second ratchet, the first, second transmission gear outer cover be equipped with shell, the inside of shell is separated into front chamber and rear chamber, first ratchet and the first transmission gear are located in front chamber, and it is realized and is driven by driving chain, second ratchet and the second transmission gear are located in rear chamber, and engagement of slowing down.The utility model advantage is that structure is simple, and high reliablity is low in cost, widely applicable, substantially covers battery-operated motor cycle, the application demand of electric low carriage or even electric sightseeing vehicle, convenient for large-scale production.
Description
Technical field
The utility model belongs to gear technical field, and in particular to a kind of dedicated tooth band one speed change of electric miniature
Mechanism.
Background technique
With the demand of development and the environmental protection of new energy technology, electric vehicle has become a kind of general in people's life
Time walking-replacing tool.Existing electric vehicle all or uses traditional electric-machine directly-driven mode mostly on the market, and in order to distinguish
In the design of traditional wheel hub of electric bicycle, lilliput car such as battery-operated motor cycle, electro-tricycle even electric low carriage
Generally follow built-in motor mode.This mainly considers this kind of vehicle vehicle in the process of moving, and passability and bumpiness need
There is higher requirement, since its speed especially battery-operated motor cycle is faster than electric bicycle very much, for low speed in balancing
Energy consumption problem, electric vehicle need exist for carrying out the switching between high speed and bottom gear using gear.And it is existing electronic
Then there is the disadvantages of structure is complicated, and reliability is lower, higher cost in vehicle gear, therefore there are no a special so far
It is suitble to the gearbox of battery-operated motor cycle and similar lilliput car.
Utility model content
It is existing to solve the purpose of this utility model is to provide a kind of dedicated tooth band one gear of electric miniature
Clutch gearbox reliability is lower, the higher problem of production cost.
To reach above-mentioned technical purpose and effect, the utility model is achieved through the following technical solutions:
A kind of dedicated tooth band one gear of electric miniature, including shell, input shaft, output shaft, the first unidirectional tooth
Wheel, the second ratchet, the first transmission gear, the second transmission gear and driving chain；The input shaft is connected to motor, can be with
Motor progress is counterclockwise or clockwise bidirectional rotation, arranged in parallel above and below the output shaft and the input shaft, and described first
Ratchet and second ratchet are fixed on the input shaft, and first ratchet and described second
Effective direction of rotation of ratchet on the contrary, first transmission gear and second transmission gear be freely arranged in it is described defeated
On shaft, it is additionally provided with the first controllable coaxial clamping disk of clamping and the second coaxial clamping disk on the output shaft, described first
Transmission gear is fixedly connected by realizing with the clamping of the described first coaxial clamping disk with the output shaft, and described second is driven
Gear with the clamping of the second coaxial clamping disk by realizing and the output shaft is fixedly connected；The shell is located at described
The outside of one ratchet, second ratchet, first transmission gear and second transmission gear, the shell
Inside be separated into front chamber and rear chamber, wherein first ratchet and first transmission gear are located at the ante-chamber
In room, and transmission is realized by the driving chain, second ratchet and second transmission gear are located at described
In rear chamber, and engagement of slowing down.
Further, the diameter of first ratchet is less than the diameter of second ratchet, and described first passes
The diameter of moving gear is less than the diameter of second transmission gear, and first ratchet and first transmission gear
The sum of radius is less than the sum of the radius of second ratchet and second transmission gear.
Further, the described first coaxial clamping disk and the second coaxial clamping disk pass through axial keyway and are set in institute
It states on output shaft, the described first coaxial clamping disk and the second coaxial clamping disk can not only rotate together with output shaft, and
And it can be moved back and forth in axial keyway；First transmission gear and second transmission gear are then freely arranged in described
On output shaft；Between first transmission gear and the described first coaxial clamping disk and two transmission gear and described the
One is respectively arranged between two coaxial clamping disks for attracting the described first coaxial clamping disk and the second coaxial clamping disk
The solenoid valve axially moved back and forth, the described first coaxial clamping disk and the second coaxial clamping disk pass through corresponding solenoid valve respectively
Opening and closing realize it is axial move back and forth, the described first coaxial clamping disk and the second coaxial clamping disk pass through axial respectively
Move back and forth the clamping or release realized with first transmission gear and second transmission gear；When coaxial clamping disk and pass
When moving gear is clamped, transmission gear is realized to be fixedly connected with output shaft, and transmission gear can rotate together with output shaft, when
When coaxial clamping disk and transmission gear unclamp, in the relationship being flexibly connected, transmission gear can be for transmission gear and output shaft
It is rotated freely on output shaft, torsion output is not generated to output shaft.
Further, the described first coaxial clamping disk and the second coaxial clamping disk could alternatively be a coaxial two-direction
It is clamped disk.
Further, it is additionally provided with the controllable third of clamping on the input shaft and is coaxially clamped disk, the third is same
Axis is clamped connection type of the disk on the input shaft with the described first coaxial clamping disk and the second coaxial clamping disk in institute
The connection type stated on output shaft is identical；The third, which is coaxially clamped between disk and first ratchet, is provided with a use
In attracting the third to be coaxially clamped dish axle to the solenoid valve moved back and forth, the third is coaxially clamped disk opening by solenoid valve
The clamping or release realized with first ratchet outer ring are closed, it is single by being clamped described first that the third is coaxially clamped disk
Being fixedly connected for first ratchet outer ring and the input shaft is realized to the outer ring of gear.
Further, first ratchet is identical with the structure of second ratchet, includes unilateral bearing
Inner disc, retainer bearing inner disc, gear outer ring, ball and roller；The unilateral bearing inner disc and the retainer bearing inner disc
It is arranged side by side along axial, the gear outer ring is sheathed on except the unilateral bearing inner disc and the retainer bearing inner disc, institute
It states and is evenly equipped with several ball grooves along the circumferential direction arranged on the outer wall of retainer bearing inner disc, in each ball grooves
It is provided with the ball, the sphere diameter of the ball is slightly larger than the depth of the ball grooves, and the ball exposes the ball
The part of slot is contacted with the circumferential inner wall of the gear outer ring；The outer wall of the unilateral bearing inner disc is interior with the gear outer ring
Wall is evenly equipped with several wedge grooves being along the circumferential direction collectively aligned on the outer wall of the unilateral bearing inner disc, often there are gap
It is respectively formed a wedge cavities between a wedge groove and the circumferential inner wall of the gear outer ring, is all provided in each wedge cavities
It is equipped with the roller.
Further, the wedge groove is by being located at the arc-shaped concave of its stub end and positioned at the straight slope group of its small head end
At.
Further, when the roller is located at the stub end of the wedge cavities, the roller and the gear outer ring
Inner wall is clearance fit, and when the roller is located at the small head end of the wedge cavities, the roller is interior with the gear outer ring
Wall is interference fit.
Likewise, this gear can also be driven using belt, it only need to be by first ratchet and described first
Transmission gear can be replaced one-way belt sheave and driving pulley respectively, and driving chain then accordingly replaces with driving belt.
The utility model rotates forward and rotates backward the principle of equal effects and two effective direction of rotation using input motor
The switching of high low gear is realized in the transmission of opposite ratchet.Assuming that effective direction of rotation of the first ratchet is inverse
Clockwise, effective direction of rotation of the second ratchet are that clockwise, output shaft rotates to be vehicle advance counterclockwise, defeated
Shaft clockwise turns to vehicle rollback, be described below working principle of the utility model is:
1, when electric vehicle needs low speed to move ahead, controller passes through coaxially clamping disk and the first transmission of solenoid valve control first
Gear clamping, coaxially clamping disk and the second transmission gear unclamp for control second, and motor driven input shaft rotates counterclockwise, and second is single
It is in idling conditions relative to input shaft to gear, the first ratchet is then locked and is rotated counterclockwise together with input shaft, the
One ratchet drives the first transmission gear of lower section to rotate counterclockwise by driving chain, at this time due to the second transmission gear phase
Idling conditions is in for output shaft, the first transmission gear and output shaft are in the state that is fixedly connected, therefore output shaft follows the
One transmission gear does rotation counterclockwise, carries out slow-speed of revolution output, the bottom gear as mechanism.
2, when electric vehicle needs high forward, controller passes through coaxially clamping disk and the first transmission of solenoid valve control first
Gear unclamps, and coaxially clamping disk and the second transmission gear are clamped for control second, when motor driven input shaft rotates clockwise, first
Ratchet is in idling conditions relative to input shaft, and the second ratchet is then locked and rotated clockwise together with input shaft,
Second ratchet drives the second transmission gear being engaged with to be rotated counterclockwise in turn, at this time due to the first transmission gear
Be in idling conditions relative to output shaft, the second transmission gear and output shaft are in the state that is fixedly connected, therefore output shaft then with
Rotation counterclockwise is done with the second transmission gear, carries out high revolving speed output, the top gear as mechanism.
3, when electric vehicle is in descending or on-position, for battery pack not to motor input current, mechanism can be battery
Group carries out energy feedback.If mechanism is in bottom gear at this time, wheel drives the first transmission gear counterclockwise by output shaft
Rotation, the first transmission gear are rotated counterclockwise by driving chain the first ratchet of drive, and the first ratchet is towards counterclockwise
It locks and is effectively rotated, band driven input shaft is rotated counterclockwise, is promoted electric power generation, is reversed battery pack and is filled
Electricity.If mechanism is in top gear at this time, wheel drives the second transmission gear to rotate counterclockwise by output shaft, the second transmission
Gear drives the second ratchet being engaged with to rotate clockwise, and the second ratchet is locked clockwise and effectively revolved
Turn, band driven input shaft is rotated clockwise, and is equally promoted electric power generation, is reversed battery pack and charges.
4, mechanism is additionally provided with neutral gear, and especially when battery-operated motor cycle needs hand push, controller passes through solenoid valve point
Not Kong Zhi the first coaxial clamping disk and the first transmission gear unclamp, coaxially clamping disk and the release of the second transmission gear of control second,
The first transmission gear and the second transmission gear are flexibly connected with output shaft at this time, and the first transmission gear and the second transmission gear are equal
It can be rotated freely around output shaft.
5, in order to meet electro-tricycle and electric low carriage the needs of, mechanism, which is additionally provided with, reverses gear.Work as electricity
When motor-car needs to move backward, by solenoid valve control first, coaxially clamping disk and the first transmission gear are clamped controller, control electromagnetism
Valve control second coaxially clamping disk and the second transmission gear be clamped, and control script be constantly in releasing orientation third it is coaxial
The outer ring of clamping disk and the first ratchet is clamped, and is made outer ring and the input shaft locking of the first ratchet, is worked as electricity in this way
Machine driving input shaft rotates clockwise, and the first ratchet will not only dally, and first can be driven to pass by driving chain instead
Moving gear rotates clockwise, and the first transmission gear drives output shaft to rotate clockwise in turn, realizes the low-reverse of electric vehicle.
Compared with prior art, the beneficial effects of the utility model are as follows:
The utility model advantage is that structure is simple, and high reliablity is widely applicable, substantially covers battery-operated motor cycle, electricity
The application demand of dynamic low-speed quadricycle or even electric sightseeing vehicle, meanwhile, the utility model is low in cost, and standard is unified, convenient for big
Large-scale production.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.Specific embodiment of the present utility model is shown in detail by following embodiment and its attached drawing.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 is the positive structure schematic of the utility model；
Fig. 2 is that the utility model increases the side structure schematic diagram after shell；
Fig. 3 is that the utility model increase third is coaxially clamped the side structure schematic diagram after disk；
Fig. 4 is the schematic diagram of the support shaft bearing surface of the utility model ratchet；
Fig. 5 is the schematic diagram of the one-way shaft bearing surface of the utility model ratchet；
Fig. 6 is the circumferential cross-section schematic diagram of the utility model ratchet.
Specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in detail.
Referring to shown in Fig. 1-2, a kind of dedicated tooth band one gear of electric miniature, including it is shell 1, input shaft 2, defeated
Shaft 3, the first ratchet 4, the second ratchet 5, the first transmission gear 6, the second transmission gear 7 and driving chain 8.It is described
First ratchet 4 is opposite with effective direction of rotation of second ratchet 5.The diameter of first ratchet 4 is small
In the diameter of second ratchet 5, the diameter of first transmission gear 6 is less than the diameter of second transmission gear 7,
And the sum of first ratchet 4 and radius of first transmission gear 6 are less than second ratchet 5 and described the
The sum of the radius of two transmission gears 7.
The input shaft 2 is connected to motor, and counterclockwise or clockwise bidirectional rotation, the output shaft can be carried out with motor
3 and about 2 input shaft it is arranged in parallel, first ratchet 4 and second ratchet 5 are fixed at described
On input shaft 2, first transmission gear 6 and second transmission gear 7 are freely arranged on the output shaft 3, described defeated
The the first coaxial clamping disk 9 and the second coaxial clamping disk 12 of controlled by solenoid valve, the described first coaxial card are additionally provided on shaft 3
Connect disk 9 and the second coaxial clamping disk 12 respectively by the opening and closing of corresponding solenoid valve realize with first transmission gear 6 and
The clamping or release of second transmission gear 7；Clamping or pine of first transmission gear 6 by the first coaxial clamping disk 9
It opens and realizes and being fixedly connected or being flexibly connected with the output shaft 3, second transmission gear 7 is coaxially clamped disk 12 by second
Clamping or unclamp realize and being fixedly connected or being flexibly connected with the output shaft 3, described first is coaxially clamped disk 9 and described the
Two coaxial clamping disks 12 also could alternatively be a coaxial two-direction clamping disk.
The shell 1 is located at first ratchet 4, second ratchet 5, first transmission gear 6
It is separated into front chamber 10 and rear chamber 11 with the inside of the outside of second transmission gear 7, the shell 1, wherein described
One ratchet 4 and first transmission gear 6 are located in the front chamber 10, and are realized and passed by the driving chain 8
Dynamic, second ratchet 5 and second transmission gear are located in the rear chamber 11, and engagement of slowing down.
Further, shown in Figure 3, in order to meet the needs of electric vehicle reverses gear, one is provided on the input shaft 2
The third of controlled by solenoid valve is coaxially clamped disk 13, and the third is coaxially clamped mounting means of the disk 13 on the input shaft 2
It is identical with mounting means of the described second coaxial clamping disk 12 on the output shaft 3 with the described first coaxial clamping disk 9, it is described
Third is coaxially clamped the clamping or release of opening and closing realization and first ratchet 4 outer ring of the disk 13 by solenoid valve；It is described
The outer ring of first ratchet 4 is coaxially clamped the clamping of disk 13 or unclamp and is realized by the third to be consolidated with the input shaft 2
Fixed connection is flexibly connected.
Further, referring to fig. 4 shown in -6, the structure phase of first ratchet 4 and second ratchet 5
It together, include unilateral bearing inner disc 14, retainer bearing inner disc 15, gear outer ring 16, ball 17 and roller 18.The one-way shaft
It holds inner disc 14 and the retainer bearing inner disc 15 to be arranged side by side along axial, the gear outer ring 16 is sheathed on the unilateral bearing
Except inner disc 14 and the retainer bearing inner disc 15.Several are evenly equipped with along circle on the outer wall of the retainer bearing inner disc 15
The ball grooves 19 of circumferential direction arrangement, are provided with the ball 17, the ball of the ball 17 in each ball grooves 19
Diameter is slightly larger than the depth of the ball grooves 19, and the ball 17 exposes the part and the gear outer ring 16 of the ball grooves 19
Circumferential inner wall contact.
The inner wall of the outer wall of the unilateral bearing inner disc 14 and the gear outer ring 16 is there are gap, in the unilateral bearing
Several wedge grooves 20 being along the circumferential direction collectively aligned are evenly equipped on the outer wall of disk 14, the wedge groove 20 is by being located at its major part
It the arc-shaped concave at end and is formed positioned at the straight slope of its small head end, the circle of each wedge groove 20 and the gear outer ring 16
It is respectively formed a wedge cavities between all inner walls, the roller 18 is provided in each wedge cavities.When the roller
18 when being located at the stub end of the wedge cavities, and the roller 18 and the inner wall of the gear outer ring 16 are clearance fit, when described
When roller 18 is located at the small head end of the wedge cavities, the inner wall of the roller 18 and the gear outer ring 16 is interference fit.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of dedicated tooth band one gear of electric miniature, it is characterised in that: including shell (1), input shaft (2), defeated
Shaft (3), the first ratchet (4), the second ratchet (5), the first transmission gear (6), the second transmission gear (7) and transmission
Chain (8)；The input shaft (2) and the output shaft (3) are arranged in parallel up and down, first ratchet (4) and described the
Two ratchets (5) are fixed on the input shaft (2), and first ratchet (4) and the second unidirectional tooth
Effective direction of rotation of (5) is taken turns on the contrary, institute is freely arranged in first transmission gear (6) and second transmission gear (7)
It states on output shaft (3), controllable the first coaxial clamping disk (9) and second of clamping is also respectively provided on the output shaft (3) together
Axis be clamped disk (12), first transmission gear (6) by with described first it is coaxial clamping disk (9) clamping realization with it is described defeated
Shaft (3) are fixedly connected, second transmission gear (7) by with second it is coaxial clamping disk (12) clamping realize with it is described
Output shaft (3) are fixedly connected；The shell (1) be located at first ratchet (4), second ratchet (5),
The inside of the outside of first transmission gear (6) and second transmission gear (7), the shell (1) is separated into front chamber
(10) and rear chamber (11), wherein first ratchet (4) and first transmission gear (6) are located at the front chamber
(10) in, and transmission, second ratchet (5) and second transmission gear are realized by the driving chain (8)
In the rear chamber (11), and engagement of slowing down.
2. the dedicated tooth band one gear of electric miniature according to claim 1, it is characterised in that: described first is single
It is less than the diameter of second ratchet (5) to the diameter of gear (4), the diameter of first transmission gear (6) is less than institute
State the diameter of the second transmission gear (7), and the sum of the radius of first ratchet (4) and first transmission gear (6)
Less than the sum of the radius of second ratchet (5) and second transmission gear (7).
3. the dedicated tooth band one gear of electric miniature according to claim 1, it is characterised in that: described first is same
Axis clamping disk (9) and described second is coaxially clamped disk (12) and is axially displaceably arranged in respectively the output shaft (3), and described the
Axial direction is realized in the opening and closing that one coaxial clamping disk (9) and second coaxial clamping disk (12) pass through corresponding solenoid valve respectively
Move back and forth, the described first coaxial clamping disk (9) and second coaxial clamping disk (12) are moved back and forth by axial respectively
Realize the clamping or release with first transmission gear (6) and second transmission gear (7).
4. the dedicated tooth band one gear of electric miniature according to claim 1 or 3, it is characterised in that: described
One coaxial clamping disk (9) and second coaxial clamping disk (12) collectively form a coaxial two-direction clamping disk.
5. the dedicated tooth band one gear of electric miniature according to claim 1, it is characterised in that: the input shaft
(2) the controllable third of clamping is provided on to be coaxially clamped disk (13), first ratchet (4) by with the third
The coaxial clamping realization for being clamped disk (13) is fixedly connected with the input shaft (2).
6. the dedicated tooth band one gear of electric miniature according to claim 5, it is characterised in that: the third is same
Axis clamping disk (13) is axially displaceably arranged on the input shaft (2), and the third is coaxially clamped disk (13) and passes through electromagnetism
The opening and closing of valve realize it is axial moves back and forth, the third be coaxially clamped disk (13) by it is axial move back and forth realization with it is described
The clamping or release of first ratchet (4).
7. the dedicated tooth band one gear of electric miniature according to claim 1, it is characterised in that: described first is single
It is identical with the structure of second ratchet (5) to gear (4), including in unilateral bearing inner disc (14), retainer bearing
Disk (15), gear outer ring (16), ball (17) and roller (18)；In the unilateral bearing inner disc (14) and the retainer bearing
Disk (15) is arranged side by side along axial, and the gear outer ring (16) is sheathed on the unilateral bearing inner disc (14) and the retainer axis
It holds except inner disc (15), is evenly equipped with several balls along the circumferential direction arranged on the outer wall of the retainer bearing inner disc (15)
Slot (19), each ball grooves (19) are interior to be provided with the ball (17), and the sphere diameter of the ball (17) is slightly larger than
The depth of the ball grooves (19), the part of ball (17) exposing ball grooves (19) and the gear outer ring (16)
Circumferential inner wall contact；There are gaps for the outer wall of the unilateral bearing inner disc (14) and the inner wall of the gear outer ring (16), described
Several wedge grooves (20) being along the circumferential direction collectively aligned, each wedge are evenly equipped on the outer wall of unilateral bearing inner disc (14)
It is respectively formed a wedge cavities between shape slot (20) and the circumferential inner wall of the gear outer ring (16), is all provided in each wedge cavities
It is equipped with the roller (18).
8. the dedicated tooth band one gear of electric miniature according to claim 7, it is characterised in that: the wedge groove
It (20) include that the arc-shaped concave positioned at its stub end and the straight slope positioned at its small head end form.
9. the dedicated tooth band one gear of electric miniature according to claim 7, it is characterised in that: when the roller
(18) when being located at the stub end of the wedge cavities, the inner wall of the roller (18) and the gear outer ring (16) is clearance fit,
When the roller (18) are located at the small head end of the wedge cavities, the inner wall of the roller (18) and the gear outer ring (16) is
Interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821138153.2U CN208831633U (en) | 2018-07-18 | 2018-07-18 | A kind of dedicated tooth band one gear of electric miniature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821138153.2U CN208831633U (en) | 2018-07-18 | 2018-07-18 | A kind of dedicated tooth band one gear of electric miniature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208831633U true CN208831633U (en) | 2019-05-07 |
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ID=66306727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821138153.2U Active CN208831633U (en) | 2018-07-18 | 2018-07-18 | A kind of dedicated tooth band one gear of electric miniature |
Country Status (1)
| Country | Link |
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| CN (1) | CN208831633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486437A (en) * | 2019-08-17 | 2019-11-22 | 左臣伟 | A kind of forward and reverse same room controllable bidirectional device gear changing mechanism |
-
2018
- 2018-07-18 CN CN201821138153.2U patent/CN208831633U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486437A (en) * | 2019-08-17 | 2019-11-22 | 左臣伟 | A kind of forward and reverse same room controllable bidirectional device gear changing mechanism |
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Effective date of registration: 20210125 Address after: 213031 No.8 Xinke Road, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Zhiyi New Energy Development Co.,Ltd. Address before: Room 406, building 2, xinshengxinyuan, Huqiu District, Suzhou City, Jiangsu Province Patentee before: Fan Chaohui |