CN102943871B - Belt continuously variable transmission - Google Patents
Belt continuously variable transmission Download PDFInfo
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- CN102943871B CN102943871B CN201210472053.4A CN201210472053A CN102943871B CN 102943871 B CN102943871 B CN 102943871B CN 201210472053 A CN201210472053 A CN 201210472053A CN 102943871 B CN102943871 B CN 102943871B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 30
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- 230000008859 change Effects 0.000 abstract description 8
- 230000001276 controlling effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
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- 230000003292 diminished effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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Abstract
The invention discloses a speed ratio control device of a continuously variable transmission. The speed ratio control device comprises a direct-current motor, a controller of the direct-current motor, two groups of gear transmission mechanisms, two groups of spiral lead screw mechanisms, two groups of spring force-assisting mechanisms, a plurality of plane bearings and a plurality of needle bearings. The direct-current motor serves as a power source of the transmission for speed ratio control, motor turning angle is converted to axial displacement of a belt pulley moving disc of the belt continuously variable transmission by controlling motor turning directions and turning angles through the two groups of gear transmission mechanisms and the spiral lead screw mechanisms correspondingly connected with the gear transmission mechanisms under matching of springs, and further continuous change of speed ratio of the continuously variable transmission in different working conditions is achieved by changing the contact radiuses of a V-shaped transmission belt and a driving belt wheel disc and a driven belt wheel disc.
Description
The application is divisional application, the application number of original application: 201010538238.1, the applying date: on November 10th, 2010, invention and created name: the Transmission Ratio Control device of variable v-belt drive.
Technical field
The invention belongs to the Transmission Ratio Control device of variable v-belt drive, be mainly used in the automobile and the motorcycle that adopt stepless speed variator, also can be applicable to the occasion that other need stepless gearing method transferring power as taped.
Background technique
?automotive transmission must adapt to vehicle and start to walk, accelerates, travels and overcoming under the different driving conditions such as different kinds of roads obstacle the different requirements driving net tractive force of wheel and the speed of a motor vehicle.In order to make full use of the power of motor, improve fuel economy and improve the emission performance of automobile, desirable automotive transmission should have the velocity ratio of stepless change and can carry out speed ratio optimization control.
?the stepless speed variator used on automobile and motorcycle is at present mostly variable v-belt drive, and the Transmission Ratio Control mode adopted mainly comprises two kinds: a kind of electric-controlled hydraulic regulative mode for being applied to metal band type stepless speed variator, another kind of for being applied to the torque cam mechanism regulative mode of rubber belt type stepless speed variator.Wherein, in the transfer capacity allowed band of stepless speed variator, electric-controlled hydraulic regulates can provide continually varying speed ratio, for raising motor average efficiency and automobile fuel ecomomy provide possibility.But hydraulic actuator efficiency is lower, and research shows, in the power loss of metal band type stepless speed variator, hydraulic system accounts for 60 %, and metal tape friction driving only accounts for about 30 %, and hydraulic actuator requirement on machining accuracy is higher simultaneously, causes cost higher; And adopt torque cam mechanism regulative mode, the speed ratio change of stepless speed variator is general all along with the change of engine operating condition, namely motor can not be made to maintain optimum working zone and the speed ratio of stepless speed variator only need be regulated to meet the requirement of load variations, and speed-ratio regulation precision can not control.
Summary of the invention
?the technical problem to be solved in the present invention proposes a kind ofly can improve the Transmission Ratio Control device that transmission efficiency can improve again the variable v-belt drive of speed-ratio regulation precision.
?for solving the problems of the technologies described above, the invention provides a kind of Transmission Ratio Control device of variable v-belt drive, comprising: direct current generator, for control the output shaft of this direct current generator turn to the controller of angle of swing, use time the power input shaft of connecting engine output shaft, the driving pulley be located on this power input shaft, use time be in transmission connection with vehicular transmission shaft pto＝power take-off, the driven pulley be located on this pto＝power take-off, be connected the V-type driving belt of described driving pulley and driven pulley; Described driving pulley comprises: being fixed on the driving pulley price fixing on described power input shaft, being located on the right side of driving pulley price fixing and the driving axle housing of empty set on described power input shaft, the empty set driving pulley Moving plate on this driving axle housing, being located at the first Bit andits control mechanism for controlling driving pulley Moving plate left and right displacement on driving axle housing on the right side of described driving pulley Moving plate; Described driving pulley price fixing and driving pulley Moving plate are truncated cone, and the end face of driving pulley price fixing and driving pulley Moving plate is oppositely arranged; Described driven pulley comprises: be fixed on the driven pulley price fixing on described pto＝power take-off, be located at driven pulley price fixing left side and the driven shaft sleeve of empty set on described pto＝power take-off, the empty set driven pulley Moving plate in described driven shaft sleeve, be located at the second displacement control mechanism for controlling driven pulley Moving plate left and right displacement in driven shaft sleeve on the left of described driven pulley Moving plate; Described driven pulley Moving plate and driven pulley price fixing are truncated cone, and the end face of driven pulley Moving plate and driven pulley price fixing is oppositely arranged; Described direct current generator is suitable for by controlling described driving pulley Moving plate and the equivalent displacement in the same way of driven pulley Moving plate through first, second Bit andits control mechanism described simultaneously.
Described first Bit andits control mechanism comprises: empty set is on driving axle housing and be located at the first plane bearing on driving pulley Moving plate right flank, be located at hollow the first helical screw, first nut of screw-thread fit on the first helical screw on the right side of the first plane bearing, and this first nut is fixed on the inner ring of a driving gear with one heart; The output shaft of described direct current generator is provided with driving gear, and this driving gear engages with described driving gear; The left surface of described first nut withstands on the right flank of the first plane bearing; Described pto＝power take-off is hollow shaft; Described second displacement control mechanism comprises: be located at the second helical screw in described pto＝power take-off by needle bearing, be located at the follower of this second helical screw right-hand member, be engaged in intermediate idler between this follower and described driving gear, screw-thread fit in described second helical screw left end the second nut, be located on driven pulley Moving plate left surface and the second plane bearing be placed in described driven shaft sleeve; The right flank of described second nut withstands on the left surface of the second plane bearing; Size, the shape of described driving pulley price fixing, driving pulley Moving plate, driven pulley Moving plate and driven pulley price fixing are consistent; The left side of described second helical screw is provided with the 4th fixing plane bearing.
?relative to prior art, good effect of the present invention: the Transmission Ratio Control device of (1) variable v-belt drive of the present invention, driven the axial equivalent displacement of driving and driven belt wheel Moving plate by a direct current generator simultaneously, thus realize the stepless change of transmission gear ratio, compared with existing electric liquid Transmission Ratio Control technology, its remarkable advantage is: 1), required parts simplify more, and cost is lower, and efficiency is higher; 2), ensure that the close look at the swing of principal and subordinate's movable belt pulley Moving plate, speed-ratio regulation precision is higher; 3), principal and subordinate's movable belt pulley end adopts different screw structures, by the matched design to screw structural parameter, makes this device meet the requirement of different speed-ratio regulation; 4), only have a motor as the power source of Transmission Ratio Control, control convenient, simple and accurately, make it not be only applicable to the metal band type stepless speed variator of automobile, and be applicable to the rubber belt type stepless speed variator of motorcycle.(2) in the present invention, by controlling turning to and corner of direct current generator, the displacement of equivalent in the same way of the axis of driving and driven belt wheel Moving plate is converted into respectively through upper and lower nut, and then change the contact radius of V-type driving belt and driving and driven belt wheel, realize the continuous stepless change of stepless speed variator speed ratio, and ensure that the precision of speed-ratio regulation.In order to reduce nominal torque and the power of described direct current generator, and then reducing its volume, being provided with spring respectively in the both sides of driving pulley Moving plate, driven pulley Moving plate; Meanwhile, in order to the movement interference of the rotary motion and Transmission Ratio Control mechanism that overcome driving and driven belt wheel itself, and carry out axially locating to the second helical screw, the present invention is provided with four plane bearings.(3) in the present invention, main, different reduction gears mechanisms and screw machanism is have employed respectively from belt wheel, can according to master, the end thrust of driven pulley Moving plate and the particular kind of relationship of speed changer transmitting torque, and it is main under different speed ratio, the corresponding relation of the contact radius of driven pulley and V-type driving belt, the structural parameter of the screw that difference flexible design is made up of the first nut and the first helical screw, the structural parameter of the driving gear on the first nut, driving gear, intermediate idler, the structural parameter of driven pulley and the structural parameter of screw be made up of the second nut and the second helical screw, thus make this Transmission Ratio Control device meet the requirement of load variations.
Accompanying drawing explanation
?in order to make content of the present invention be more likely to be clearly understood, below basis specific embodiment and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of the Transmission Ratio Control device of variable v-belt drive of the present invention.
?label in accompanying drawing: 1--power input shaft, 2--driving pulley price fixing, 3--driving axle housing, 4--driving pulley Moving plate, 5--first plane bearing, 6--first nut, 7-the first helical screw, 8--the 3rd plane bearing, 9-the first power assistant spring, 10--driving gear, 11--intermediate idler, 12--driven gear, 13--pto＝power take-off, 14--needle bearing, 15--exports driving gear, 16--exports driven gear, 17--driven pulley price fixing, 18--driven shaft sleeve, 19--V type driving belt, 20--driven pulley Moving plate, 21--second plane bearing, 22--guide mechanism, 23--second nut, 24-the second helical screw, 25--needle bearing, 26-the second power assistant spring, 27--vehicular transmission shaft, 28--direct current generator, 29--the 4th plane bearing, 30--driving gear, 31--guiding groove.
Embodiment
?see Fig. 1, the Transmission Ratio Control device of the variable v-belt drive of the present embodiment, comprising: direct current generator, for control the output shaft of this direct current generator turn to the controller of angle of swing, use time the power input shaft 1 of connecting engine output shaft, the driving pulley be located on this power input shaft 1, use time be in transmission connection with vehicular transmission shaft 27 pto＝power take-off 13, the driven pulley be located on this pto＝power take-off 13, be connected the V-type driving belt 19 of described driving pulley and driven pulley.
?described driving pulley comprises: being fixed on the driving pulley price fixing 2 on described power input shaft 1, being located on the right side of driving pulley price fixing 2 and the driving axle housing 3 of empty set on described power input shaft 1, the driving pulley Moving plate 4 of empty set on this driving axle housing 3, being located at the first Bit andits control mechanism for controlling driving pulley Moving plate 4 left and right displacement on driving axle housing 3 on the right side of described driving pulley Moving plate 4.
?described driving pulley price fixing 2 and driving pulley Moving plate 4 are truncated cone, and the end face of driving pulley price fixing 2 and driving pulley Moving plate 4 is oppositely arranged.
?described driven pulley comprises: be fixed on the driven pulley price fixing 17 on described pto＝power take-off 13, be located at driven pulley price fixing 17 left side and the driven shaft sleeve 18 of empty set on described pto＝power take-off 13, the driven pulley Moving plate 20 of empty set in described driven shaft sleeve 18, be located at the second displacement control mechanism for controlling driven pulley Moving plate 20 left and right displacement in driven shaft sleeve 18 on the left of described driven pulley Moving plate 20;
Described driven pulley Moving plate 20 and driven pulley price fixing 17 are truncated cone, and the end face of driven pulley Moving plate 20 and driven pulley price fixing 17 is oppositely arranged;
Described direct current generator is suitable for by controlling described driving pulley Moving plate 4 and driven pulley Moving plate 20 equivalent displacement in the same way through first, second Bit andits control mechanism described simultaneously.
?described first Bit andits control mechanism comprises: empty set is on driving axle housing 3 and be located at the first plane bearing 5 on driving pulley Moving plate 4 right flank, be located at hollow the first helical screw 7, first nut 6 of screw-thread fit on the first helical screw 7 on the right side of the first plane bearing 5, and this first nut 6 is fixed on the inner ring of a driving gear 30 with one heart;
The output shaft of described direct current generator is provided with driving gear 10, and this driving gear 10 engages with described driving gear 30;
The left surface of described first nut 6 withstands on the right flank of the first plane bearing 5.
?described pto＝power take-off 13 is hollow shaft;
Described second displacement control mechanism comprises: be located at the second helical screw 24 in described pto＝power take-off 13 by needle bearing 14 and 25, be located at the follower 12 of this second helical screw 24 right-hand member, be engaged in intermediate idler 11 between this follower 12 and described driving gear 10, screw-thread fit in described second helical screw 24 left end the second nut 23, be located on driven pulley Moving plate 20 left surface and be placed in the second plane bearing 21 in described driven shaft sleeve 18;
The right flank of described second nut 23 withstands on the left surface of the second plane bearing 21.
?described first Bit andits control mechanism also comprises: in the first helical screw 7 and first power assistant spring 9 of elastic reaction on the first plane bearing 5 right flank be enclosed within driving axle housing 3;
Described second displacement control mechanism also comprises: in the second nut 23 and second power assistant spring 26 of elastic reaction on this second plane bearing 21 left surface be enclosed within driven shaft sleeve 18; In use, the elastic force of the first power assistant spring 9 is less than V-type driving belt 19 and acts on end thrust on driving pulley Moving plate 4, and the elastic force of the second power assistant spring 26 is less than V-type driving belt 19 and acts on end thrust on driven pulley Moving plate 20.
?the outer wall of described second nut 23 is provided with axial guiding groove 31, and the outside of this guiding groove 31 is provided with fixing spacing guide rod 22(when specifically implementing, and this spacing guide rod 22 is fixed on the inwall of case of transmission).
?described pto＝power take-off 13 is provided with and exports driving gear 15, and this output driving gear 15 is in transmission connection with described vehicular transmission shaft 27 by exporting driven gear 16.
?the right-hand member of described power input shaft 1 is provided with the 3rd fixing plane bearing 8(when specifically implementing, and it is fixed on the inwall of case of transmission), described first power assistant spring 9 elasticity is arranged between the 3rd plane bearing 8 and described first plane bearing 5.
?size, the shape of described driving pulley price fixing 2, driving pulley Moving plate 4, driven pulley Moving plate 20 and driven pulley price fixing 17 are consistent.
?the left side of described second helical screw 24 is provided with the 4th fixing plane bearing 29(when specifically implementing, and it is fixed on the inwall of case of transmission).
?respectively the speed ratio of speed changer is changed from small to big below and being described below of two processes from large to small and working principle thereof:
During the ascending adjustment of the speed ratio of speed changer, namely need to control the driving pulley radius of clean-up and diminish, the driven pulley radius of clean-up becomes large, now control direct current generator 28 and be rotated counterclockwise several angle, at driving pulley end, first nut 6 rotates at the clockwise under influence of driving gear 10 and driving gear 30, first helical screw 7 is fixed, relative first helical screw 7 straight-line displacement to the right of first nut 6, driving pulley Moving plate 4 also moves right under the promotion of V-type driving belt 19, and V-type driving belt 19 reduces with the contact radius of driving pulley, at driven pulley end, when direct current generator 28 is rotated counterclockwise several angle, due to the effect of intermediate idler 11 and driven gear 12, second helical screw 24 also does counterclockwise movement, the second helical screw 24 can not move axially owing to can only rotate, so the straight-line displacement to the right under the effect of guide mechanism 22 of the second nut 23, and driven pulley Moving plate 20 straight-line displacement is to the right promoted through plane bearing 21 together with the second power assistant spring 26, because driven pulley price fixing 17 keeps motionless, V-type driving belt 19 becomes large with the contact radius of driven pulley, the speed ratio realizing speed changer becomes large.
?when the descending adjustment of the speed ratio of speed changer, that is: need the driving pulley radius of clean-up to become large, the driven pulley radius of clean-up diminishes; Now control direct current generator 28 to turn clockwise several angle, at driving pulley end, first nut 6 is rotated counterclockwise under the effect of driving gear 10 and driving gear 30, because the first helical screw 7 maintains static, relative first helical screw 7 straight-line displacement left of first nut 6, and driving pulley Moving plate 4 straight-line displacement is left promoted through plane bearing 5 together with the first power assistant spring 9, because driving pulley price fixing 2 keeps motionless, V-type driving belt 9 becomes large with the contact radius of driving pulley; At driven pulley end, when direct current generator 28 turns clockwise several angle, due to the effect of driving gear 10, intermediate idler 11 and driven gear 12, second helical screw 24 also does clockwise movement, the second helical screw 24 can not axially move linearly owing to can only rotate, so the straight-line displacement left under the effect of guide mechanism 22 of the second nut 23, driven pulley Moving plate 20 under the promotion of V-type driving belt 19 also to left movement, V-type driving belt 19 is diminished with the contact radius of driven pulley, and the speed ratio realizing speed changer diminishes.
?wherein, V-type driving belt 19 is premised on the belt length of V-type driving belt 19 is constant with the change of driving and driven pulley contact radius, namely V-type driving belt 19 belt length remains unchanged, when the contact radius of driving pulley and V-type driving belt 19 becomes large, the contact radius of driven pulley and V-type driving belt 19 diminishes, and vice versa.This is the basic principle that variable v-belt drive realizes speed-ratio regulation.
?above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.
Claims (1)
1. a Transmission Ratio Control device for variable v-belt drive, is characterized in that comprising: direct current generator, for control the output shaft of this direct current generator turn to the controller of angle of swing, use time the power input shaft (1) of connecting engine output shaft, the driving pulley be located on this power input shaft (1), use time be in transmission connection with vehicular transmission shaft (27) pto＝power take-off (13), the driven pulley be located on this pto＝power take-off (13), be connected the V-type driving belt (19) of described driving pulley and driven pulley;
Described driving pulley comprises: be fixed on the driving pulley price fixing (2) on described power input shaft (1), be located at driving pulley price fixing (2) right side and the driving axle housing (3) of empty set on described power input shaft (1), the driving pulley Moving plate (4) of empty set on this driving axle housing (3), be located at described driving pulley Moving plate (4) right side for controlling the first Bit andits control mechanism of driving pulley Moving plate (4) in the upper left and right displacement of driving axle housing (3);
Described driving pulley price fixing (2) and driving pulley Moving plate (4) are truncated cone, and the end face of driving pulley price fixing (2) and driving pulley Moving plate (4) is oppositely arranged;
Described driven pulley comprises: be fixed on the driven pulley price fixing (17) on described pto＝power take-off (13), be located at driven pulley price fixing (17) left side and the driven shaft sleeve (18) of empty set on described pto＝power take-off (13), the driven pulley Moving plate (20) of empty set in described driven shaft sleeve (18), be located at described driven pulley Moving plate (20) left side for controlling the second displacement control mechanism of driven pulley Moving plate (20) in the upper left and right displacement of driven shaft sleeve (18);
Described driven pulley Moving plate (20) and driven pulley price fixing (17) are truncated cone, and the end face of driven pulley Moving plate (20) and driven pulley price fixing (17) is oppositely arranged;
Described direct current generator is suitable for by controlling described driving pulley Moving plate (4) and driven pulley Moving plate (20) equivalent displacement in the same way through first, second Bit andits control mechanism described simultaneously;
Described first Bit andits control mechanism comprises: empty set is upper and be located at the first plane bearing (5) on driving pulley Moving plate (4) right flank, be located at hollow the first helical screw (7), first nut (6) of screw-thread fit on the first helical screw (7) on the first plane bearing (5) right side at driving axle housing (3), and this first nut (6) is fixed on the inner ring of a driving gear (30) with one heart;
The output shaft of described direct current generator is provided with driving gear (10), and this driving gear (10) engages with described driving gear (30);
The left surface of described first nut (6) withstands on the right flank of the first plane bearing (5);
Described pto＝power take-off (13) is hollow shaft;
Described second displacement control mechanism comprises: be located at the second helical screw (24) in described pto＝power take-off (13) by needle bearing (14 and 25), be located at the follower (12) of this second helical screw (24) right-hand member, be engaged in the intermediate idler (11) between this follower (12) and described driving gear (10), screw-thread fit is in second nut (23) of described second helical screw (24) left end, to be located on driven pulley Moving plate (20) left surface and the second plane bearing (21) be placed in described driven shaft sleeve (18),
The right flank of described second nut (23) withstands on the left surface of the second plane bearing (21);
Size, the shape of described driving pulley price fixing (2), driving pulley Moving plate (4), driven pulley Moving plate (20) and driven pulley price fixing (17) are consistent;
The left side of described second helical screw (24) is provided with the 4th fixing plane bearing (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210472053.4A CN102943871B (en) | 2010-11-10 | 2010-11-10 | Belt continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210472053.4A CN102943871B (en) | 2010-11-10 | 2010-11-10 | Belt continuously variable transmission |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010538238 Division CN101975269B (en) | 2010-11-10 | 2010-11-10 | Speed ratio control device with belt type continuously variable transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102943871A CN102943871A (en) | 2013-02-27 |
| CN102943871B true CN102943871B (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210472053.4A Expired - Fee Related CN102943871B (en) | 2010-11-10 | 2010-11-10 | Belt continuously variable transmission |
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| CN (1) | CN102943871B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671799B (en) * | 2013-12-18 | 2016-06-29 | 寸维康 | Push-down buncher |
| CN107725703A (en) * | 2017-11-17 | 2018-02-23 | 深圳市佳得设备科技有限公司 | A kind of micro- speed ratio mechanism |
| CN110219975B (en) * | 2019-05-07 | 2021-08-24 | 江苏理工学院 | Double-motor-regulated CVT electronic control system and method |
| CN112728029B (en) * | 2020-12-29 | 2023-03-17 | 哈尔滨剑桥学院 | CVT transmission mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3618413A (en) * | 1970-04-06 | 1971-11-09 | Clausing Corp | Variable speed transmission |
| CN1690473A (en) * | 2004-04-20 | 2005-11-02 | 本田技研工业株式会社 | V-belt type automatic transmission follower pulley assembly |
| CN1807930A (en) * | 2004-10-05 | 2006-07-26 | 捷特科株式会社 | Line pressure controller of belt-type continuously variable transmission |
| CN1900554A (en) * | 2005-07-20 | 2007-01-24 | 本田技研工业株式会社 | V-belt type continuous speed changing transmission |
| CN200999844Y (en) * | 2007-01-22 | 2008-01-02 | 南京理工大学 | Power dividing type stepless speed variator |
-
2010
- 2010-11-10 CN CN201210472053.4A patent/CN102943871B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3618413A (en) * | 1970-04-06 | 1971-11-09 | Clausing Corp | Variable speed transmission |
| CN1690473A (en) * | 2004-04-20 | 2005-11-02 | 本田技研工业株式会社 | V-belt type automatic transmission follower pulley assembly |
| CN1807930A (en) * | 2004-10-05 | 2006-07-26 | 捷特科株式会社 | Line pressure controller of belt-type continuously variable transmission |
| CN1900554A (en) * | 2005-07-20 | 2007-01-24 | 本田技研工业株式会社 | V-belt type continuous speed changing transmission |
| CN200999844Y (en) * | 2007-01-22 | 2008-01-02 | 南京理工大学 | Power dividing type stepless speed variator |
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| CN102943871A (en) | 2013-02-27 |
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Effective date of registration: 20201120 Address after: Group 5, linqiao village, Hai'an town, Hai'an City, Nantong City, Jiangsu Province 226600 Patentee after: Jiangsu Jiutong Auto Parts Co.,Ltd. Address before: 213001 Changzhou Province in the Clock Tower District, Jiangsu, Wu Road, No. 1801 Patentee before: JIANGSU University OF TECHNOLOGY |
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Granted publication date: 20141231 |