CN105387169B - A kind of contiuously variable transmission with external hydraulic torque converter of overflow valve - Google Patents
A kind of contiuously variable transmission with external hydraulic torque converter of overflow valve Download PDFInfo
- Publication number
- CN105387169B CN105387169B CN201510877262.0A CN201510877262A CN105387169B CN 105387169 B CN105387169 B CN 105387169B CN 201510877262 A CN201510877262 A CN 201510877262A CN 105387169 B CN105387169 B CN 105387169B
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- China
- Prior art keywords
- gear
- confluence
- input
- connection
- planet carrier
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- 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.)
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Classifications
-
- 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
- F16H—GEARING
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/24—Details
-
- 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
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/06—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type
- F16H47/08—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type the mechanical gearing being of the type with members having orbital motion
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H2057/087—Arrangement and support of friction devices in planetary gearings, e.g. support of clutch drums, stacked arrangements of friction devices
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
- General Details Of Gearings (AREA)
- Transmission Devices (AREA)
- Structure Of Transmissions (AREA)
Abstract
The present invention provides a kind of contiuously variable transmissions with external hydraulic torque converter of overflow valve, its key points of the technical solution are that, input bull gear（23）And input gear pair（6）With input shaft（1）Connection, exports small gear ring（22）With confluence gear pair（8）Connection, converge gear pair（8）Pinion gear is inputted with confluence（32）Connection, input gear pair（6）With couple bull gear（26）And coupling spindle（7）Connection, coupling spindle（7）With confluence gear（28）Connection, couples small gear ring（25）With external hydraulic torque converter of overflow valve（5）Connection, external hydraulic torque converter of overflow valve（5）With one-way clutch（4）And confluence planet carrier（29）Connection exports bull gear（27）Planet carrier is inputted with confluence（33）Connection exports gear wheel（31）With output shaft（9）Connection.
Description
Technical field
The invention belongs to fluid torque-converter fields, and more specifically, it is a kind of for various surface cars, ship, iron
Road locomotive, engineering machinery, various metallurgy, mine, oil, chemical industry, light industry, food, weaving, handling machinery, lathe, machinery
The contiuously variable transmission with external hydraulic torque converter of overflow valve of people and military project.
Background technology
Currently, fluid torque-converter is required for designing by principles such as hydrostatics, the power that it can be transmitted is little, and
And it is inefficient；In addition, of high cost.
Invention content
The present invention overcomes the deficiencies in the prior art, provide a kind of service life extending engine and power train, knot
Structure is simple, the energy-efficient contiuously variable transmission with external hydraulic torque converter of overflow valve.
In order to achieve the object of the present invention, below the technical solution adopted by the present invention：
A kind of contiuously variable transmission with external hydraulic torque converter of overflow valve, including input shaft 1, one-way clutch 4
, external hydraulic torque converter of overflow valve 5, input gear pair 6, coupling spindle 7, confluence gear pair 8, output shaft 9, institute
It is equipped with planetary gear 20 between the input shaft 1 stated and output shaft 9, fixed carrier 21, exports small gear ring 22, is defeated
Enter bull gear 23, connection planet carrier 24, the small gear ring 25 of connection, connection bull gear 26, output bull gear 27, confluence
Gear 28, confluence planetary gear 30, output gear wheel 31, confluence input pinion gear 32, converges at confluence planet carrier 29
Stream input planet carrier 33 inputs bull gear 23 and the input gear 61 and input shaft 1 of input gear pair 6
It connects, fixed carrier 21 coordinates work by planetary gear 20 thereon with the small gear ring 22 of output, input bull gear 23
Make, exports small gear ring 22 and couple with the input gear 81 for the gear pair 8 that converges, the output gear for the gear pair 8 that converges
82 with confluence input pinion gear 32 couple, the output gear 62 of input gear pair 6 with couple bull gear 26 and join
Spindle 7 couples, and coupling spindle 7 couples with confluence gear 28, and connection planet carrier 24 passes through planetary gear 20 thereon
With couple small gear ring 25, connection 26 cooperating of bull gear, couple small gear ring 25 and external overflow valve hydraulic moment changeable
The input terminal 51 of device 5 couples, output end 52 and the one-way clutch 4 of external hydraulic torque converter of overflow valve 5
Input terminal 41 and confluence planet carrier 29 couple, the output end 42 of one-way clutch 4, fixed carrier 21 with
And connection planet carrier 24 couple with retaining element, confluence planet carrier 29 is by planetary gear 20 thereon and exports canine tooth
Circle 27, confluence 28 cooperating of gear, output bull gear 27 couple with confluence input planet carrier 33, confluence input
Planet carrier 33 coordinates work by confluence planetary gear 30 thereon with output gear wheel 31, confluence input pinion gear 32
Make, output gear wheel 31 couples with output shaft 9.
Two need the element that couples, can select to be directly connected to, passed through by way of hollow shaft other elements or
Across other elements by way of connecting rod, make two the element coupled is needed to link together.
When the present invention is applied to vehicle, it can automatically change output according to vehicle when driving by the size of resistance and turn round
The variation of square and speed.
The present invention has the following advantages that：
（1）The power of the present invention is transmitted by gear ring, planetary gear, planet carrier, gear, thus transmission power and transmission efficiency
It all greatlys improve, and simple in structure, it is easier to repair；
（2）The bending moment and speed change of the present invention is automatically performed, and can realize efficient transmission, and in addition to start to walk with
Outside, engine can be made to work in optimum range, compared with other speed changers, under the premise of engine is equivalent, it is reduced
The manufacturing cost of engine；
（3）The present invention makes engine be in operating in economic speed region, that is, in the rotating speed of very small disposal of pollutants
Work, avoids engine in idling and high-speed cruising in range, discharges large quantity of exhaust gas, to reduce the discharge of exhaust gas,
Be conducive to environmental protection；
（4）The present invention can play buffering and overload protection using internal rotation difference, be conducive to extend engine and biography
The service life of dynamic system can then make the automatic reduction of speed of vehicle, on the contrary then raising speed be conducive to improve vehicle in addition, when running resistance increases
Driving performance；
（5）The present invention keeps input power uninterrupted, it is ensured that vehicle has good acceleration and higher average speed, makes
The abrasion of engine is reduced, and is extended interval mileage of major repair, is improved bus dispatching rate, is conducive to improve productivity.
Can be additionally used in various surface cars, ship, railway locomotive, engineering machinery, various smeltings in addition, the present invention is one kind
Gold, mine, oil, chemical industry, light industry, food, weaving, handling machinery, lathe, robot and military project have an overflow valve
The contiuously variable transmission of external hydraulic torque converter.
Description of the drawings
Fig. 1 is the structure chart of the embodiment of the present invention；
Junction in attached drawing between two elements is fixedly connected with heavy line expression, and fine line indicates two elements
It can relatively rotate.
Specific implementation mode
The present invention is described in further detail with specific implementation mode below in conjunction with the accompanying drawings：
Embodiment：
As shown in fig. 1, a kind of contiuously variable transmission with external hydraulic torque converter of overflow valve, including input shaft 1, list
To clutch 4, external hydraulic torque converter of overflow valve 5, input gear pair 6, coupling spindle 7, confluence gear pair 8, output shaft 9, institute
Planetary gear 20, fixed carrier 21, the small gear ring 22 of output, input bull gear are equipped between the input shaft 1 stated and output shaft 9
23, couple planet carrier 24, the small gear ring 25 of connection, connection bull gear 26, output bull gear 27, confluence gear 28, confluence planet carrier
29, converge planetary gear 30, output gear wheel 31, confluence input pinion gear 32, confluence input planet carrier 33, inputs bull gear
23 and the input gear 61 of input gear pair 6 couple with input shaft 1, fixed carrier 21 by planetary gear 20 thereon with
Small gear ring 22, input 23 cooperating of bull gear are exported, small gear ring 22 is exported and couples with the input gear 81 for the gear pair 8 that converges,
Converge gear pair 8 output gear 82 with confluence input pinion gear 32 couple, the output gear 62 of input gear pair 6 with couple greatly
Gear ring 26 and coupling spindle 7 couple, and coupling spindle 7 couples with confluence gear 28, and connection planet carrier 24 passes through planetary gear thereon
20 with couple small gear ring 25, connection 26 cooperating of bull gear, couple small gear ring 25 and external hydraulic torque converter of overflow valve 5
Input terminal 51 couple, the output end 52 of external hydraulic torque converter of overflow valve 5 and the input terminal 41 of one-way clutch 4 and converge
Popular carrier 29 couples, output end 42, fixed carrier 21 and the connection planet carrier 24 and retaining element of one-way clutch 4
Connection, confluence planet carrier 29 pass through planetary gear 20 thereon and output bull gear 27, confluence 28 cooperating of gear, output
Bull gear 27 couple with confluence input planet carrier 33, confluence input planet carrier 33 by confluence planetary gear 30 thereon with export
Gear wheel 31, confluence input 32 cooperating of pinion gear, output gear wheel 31 couple with output shaft 9.
The input power of engine splits into three tunnels through input shaft 1, and the first via flows into input bull gear 23, and by solid
Determine the planetary gear 20 on planet carrier 21 and flow into the small gear ring 22 of output, then passes through the gear pair 8 that converges and flow into confluence input pinion gear
32；Second tunnel flows into connection bull gear 26 by input gear pair 6, and the planetary gear 20 by coupling on planet carrier 24 flows
Enter to couple small gear ring 25, then confluence planet carrier 29 is flowed by external hydraulic torque converter of overflow valve 5；Third road passes through input
Gear pair 6 and coupling spindle 7 flow into confluence gear 28.
Since confluence gear 28, confluence planet carrier 29 are confluence elements, so flowing into the work(of the second tunnel confluence planet carrier 29
Rate and the power for flowing into third road confluence gear 28, confluence is in output bull gear 27, then flows into confluence input planet carrier 33.
Since confluence input pinion gear 32 and confluence input planet carrier 33 are confluence elements, so flowing into confluence line of input
The power of carrier 33 and the power for flowing into first via confluence input pinion gear 32, confluence are transmitted to defeated in output gear wheel 31
The power of engine is passed through output shaft 9 and externally exported by shaft 9 to realize.
For the present invention the contiuously variable transmission with external hydraulic torque converter of overflow valve, when input shaft 1 rotating speed not
Become, the torque on output shaft 9 changes with the variation of its rotating speed, and rotating speed is lower, and the torque on output shaft 9 is bigger, conversely, then
It is smaller, to realize that the present invention can change torque and speed with the difference of vehicle travel resistance has external overflow valve
The contiuously variable transmission of fluid torque-converter.
The contiuously variable transmission with external hydraulic torque converter of overflow valve of the present invention is in use, set the input work of engine
Rate, input speed and its load are constant, i.e. the rotating speed of input shaft 1 and torque is constant, and before vehicle starting, output shaft 9 turns
Speed is zero, works as automobile starting, and because resistance is larger, and due to the effect of one-way clutch 4, confluence planet carrier 29 is stationary,
Confluence gear 28 by each element then being transmitted to this torque from input shaft 1, then is transmitted to output bull gear 27, makes output
27 reduction of speed of bull gear increases square, then is transmitted to confluence input planet carrier 33, and is converged with the torque for being transmitted to confluence input pinion gear 32
It flows in output gear wheel 31, is eventually transferred into output shaft 9, the tractive force generated on driving wheel is transferred to through power train and is enough to overcome
When vehicle starting resistance, automobile then starts to walk and starts to accelerate, when increase power continues acceleration or drag reduction, one-way clutch
4 automatically terminate the control to 29 rotation direction of planet carrier of converging, the input terminal 51 of external hydraulic torque converter of overflow valve 5 and output
End 52 speed discrepancy constantly reduce, that is, converge planet carrier 29 rotating speed be continuously increased, and with confluence gear 28 rotating speed converge speed in
Bull gear 27 is exported, the rotating speed of output bull gear 27 is made also to be continuously increased, is i.e. the rotating speed of confluence input planet carrier 33 also constantly increases
Add, then converge speed in output gear wheel 31 with the rotating speed of confluence input pinion gear 32 and be transferred to output shaft 9, to realize handle
The power of engine is externally exported by output shaft 9.
Claims (1)
1. a kind of contiuously variable transmission with external hydraulic torque converter of overflow valve, including input shaft（1）, one-way clutch（4）、
External hydraulic torque converter of overflow valve（5）, input gear pair（6）, coupling spindle（7）, confluence gear pair（8）, output shaft（9）,
It is characterized in that：The input shaft（1）With output shaft（9）Between be equipped with planetary gear（20）, fixed carrier（21）, output it is small
Gear ring（22）, input bull gear（23）, connection planet carrier（24）, the small gear ring of connection（25）, connection bull gear（26）, output canine tooth
Circle（27）, confluence gear（28）, confluence planet carrier（29）, confluence planetary gear（30）, output gear wheel（31）, confluence input it is small
Gear（32）, confluence input planet carrier（33）, input bull gear（23）And input gear pair（6）Input gear（61）With
Input shaft（1）Connection, fixed carrier（21）Pass through planetary gear thereon（20）With the small gear ring of output（22）, input bull gear
（23）Cooperating exports small gear ring（22）With confluence gear pair（8）Input gear（81）Connection, converge gear pair（8）'s
Output gear（82）Pinion gear is inputted with confluence（32）Connection, input gear pair（6）Output gear（62）With couple bull gear
（26）And coupling spindle（7）Connection, coupling spindle（7）With confluence gear（28）Connection couples planet carrier（24）Pass through row thereon
Star gear（20）With couple small gear ring（25）, connection bull gear（26）Cooperating couples small gear ring（25）It is external with overflow valve
Formula fluid torque-converter（5）Input terminal（51）Connection, external hydraulic torque converter of overflow valve（5）Output end（52）With unidirectionally from
Clutch（4）Input terminal（41）And confluence planet carrier（29）Connection, one-way clutch（4）Output end（42）, fixed planet
Frame（21）And connection planet carrier（24）Couple with retaining element, converge planet carrier（29）Pass through planetary gear thereon（20）With
Export bull gear（27）, confluence gear（28）Cooperating exports bull gear（27）Planet carrier is inputted with confluence（33）Connection,
Confluence input planet carrier（33）Pass through confluence planetary gear thereon（30）With output gear wheel（31）, confluence input pinion gear
（32）Cooperating exports gear wheel（31）With output shaft（9）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877262.0A CN105387169B (en) | 2014-05-07 | 2014-05-07 | A kind of contiuously variable transmission with external hydraulic torque converter of overflow valve |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410189875.0A CN103939565B (en) | 2014-05-07 | 2014-05-07 | A kind of composite type hydraulic torque converter with external overflow valve and stepless speed variator |
| CN201510877262.0A CN105387169B (en) | 2014-05-07 | 2014-05-07 | A kind of contiuously variable transmission with external hydraulic torque converter of overflow valve |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410189875.0A Division CN103939565B (en) | 2014-05-07 | 2014-05-07 | A kind of composite type hydraulic torque converter with external overflow valve and stepless speed variator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105387169A CN105387169A (en) | 2016-03-09 |
| CN105387169B true CN105387169B (en) | 2018-08-24 |
Family
ID=51187378
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510877204.8A Pending CN105351474A (en) | 2014-05-07 | 2014-05-07 | Composite overflow valve external type hydraulic torque converter |
| CN201510877262.0A Active CN105387169B (en) | 2014-05-07 | 2014-05-07 | A kind of contiuously variable transmission with external hydraulic torque converter of overflow valve |
| CN201410189875.0A Expired - Fee Related CN103939565B (en) | 2014-05-07 | 2014-05-07 | A kind of composite type hydraulic torque converter with external overflow valve and stepless speed variator |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510877204.8A Pending CN105351474A (en) | 2014-05-07 | 2014-05-07 | Composite overflow valve external type hydraulic torque converter |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410189875.0A Expired - Fee Related CN103939565B (en) | 2014-05-07 | 2014-05-07 | A kind of composite type hydraulic torque converter with external overflow valve and stepless speed variator |
Country Status (2)
| Country | Link |
|---|---|
| CN (3) | CN105351474A (en) |
| HK (2) | HK1222427A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122420A (en) * | 2014-12-12 | 2016-11-16 | 吴志强 | A kind of compound fluid-flywheel clutch and starter |
| CN106438915A (en) * | 2014-12-12 | 2017-02-22 | 吴志强 | Compound centered turbine hydraulic torque converter and starter |
| CN104653744B (en) * | 2015-01-16 | 2017-06-23 | 广州市无级制动科技有限责任公司 | A kind of composite type hydraulic torque converter with external overflow valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022509A (en) * | 2009-09-09 | 2011-04-20 | 吴志强 | Composite type hydraulic torque converter with external overflow valve |
| CN102062193A (en) * | 2010-07-07 | 2011-05-18 | 吴志强 | Composite variable speed fluid coupling |
| CN102808918A (en) * | 2012-08-17 | 2012-12-05 | 长城汽车股份有限公司 | Parallel shaft type automatic transmission, power assembly and vehicle |
| CN103161893A (en) * | 2008-06-06 | 2013-06-19 | 吴志强 | Multi-gear simultaneous meshing transmission of composite outer meshing planet gear mechanism |
| CN203248650U (en) * | 2013-04-28 | 2013-10-23 | 河南科技大学 | Hydraulic mechanical multi-clutch speed changer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59222662A (en) * | 1983-06-01 | 1984-12-14 | Honda Motor Co Ltd | Controller for operation of clutch of fluid torque converter in transmission gear for vehicle |
| DE3785045T2 (en) * | 1987-12-23 | 1993-07-01 | Honda Motor Co Ltd | STEPLESS VEHICLE TRANSMISSION. |
| CN102661366B (en) * | 2005-11-11 | 2014-10-22 | 吴志强 | Composite compact-type speed changer |
| CN103195884A (en) * | 2013-04-03 | 2013-07-10 | 吴志强 | Multi-gear meshing speed changer for compound planetary gear mechanism |
-
2014
- 2014-05-07 CN CN201510877204.8A patent/CN105351474A/en active Pending
- 2014-05-07 CN CN201510877262.0A patent/CN105387169B/en active Active
- 2014-05-07 CN CN201410189875.0A patent/CN103939565B/en not_active Expired - Fee Related
-
2016
- 2016-04-11 HK HK16104102.9A patent/HK1222427A1/en unknown
- 2016-04-11 HK HK16104105.6A patent/HK1216349A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161893A (en) * | 2008-06-06 | 2013-06-19 | 吴志强 | Multi-gear simultaneous meshing transmission of composite outer meshing planet gear mechanism |
| CN102022509A (en) * | 2009-09-09 | 2011-04-20 | 吴志强 | Composite type hydraulic torque converter with external overflow valve |
| CN102062193A (en) * | 2010-07-07 | 2011-05-18 | 吴志强 | Composite variable speed fluid coupling |
| CN102808918A (en) * | 2012-08-17 | 2012-12-05 | 长城汽车股份有限公司 | Parallel shaft type automatic transmission, power assembly and vehicle |
| CN203248650U (en) * | 2013-04-28 | 2013-10-23 | 河南科技大学 | Hydraulic mechanical multi-clutch speed changer |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1216349A1 (en) | 2016-11-04 |
| CN103939565B (en) | 2016-04-13 |
| CN103939565A (en) | 2014-07-23 |
| CN105387169A (en) | 2016-03-09 |
| CN105351474A (en) | 2016-02-24 |
| HK1222427A1 (en) | 2017-06-30 |
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Effective date of registration: 20180713 Address after: 510000 Guangdong province Guangzhou high tech Industrial Development Zone, No. 231 and 233 podium No. B1B2, one to four layers of knowledge business Valley, international intellectual property right, space office card number Applicant after: Guangzhou stepless Brake Technology Co., Ltd. Address before: 510160 Room 502, Dongfeng West Road, Liwan District, Guangzhou, Guangdong, 502 Applicant before: Wu Zhiqiang |
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Effective date of registration: 20201119 Address after: 138-1 Ninghai South Road, Chengdong Town, Hai'an City, Nantong City, Jiangsu Province, 226000 Patentee after: NANTONG RUIQIANG MACHINERY MANUFACTURING Co.,Ltd. Address before: 510000 Guangdong Province, Guangzhou high tech Industrial Development Zone, No. 231 science Road No. 233 podium building B1B2 a layer to four known business valley international intellectual property public record office space Card No. C-02 Patentee before: Guangzhou stepless Brake Technology Co.,Ltd. |
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