CN101446334A - Automatic compression deflexion-free automobile Metal V-belt CVT (continuously variable transmission) - Google Patents
Automatic compression deflexion-free automobile Metal V-belt CVT (continuously variable transmission) Download PDFInfo
- Publication number
- CN101446334A CN101446334A CNA2008102372766A CN200810237276A CN101446334A CN 101446334 A CN101446334 A CN 101446334A CN A2008102372766 A CNA2008102372766 A CN A2008102372766A CN 200810237276 A CN200810237276 A CN 200810237276A CN 101446334 A CN101446334 A CN 101446334A
- Authority
- CN
- China
- Prior art keywords
- movable wheel
- ball screw
- shaft
- driving shaft
- fast pulley
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention relates to an automobile CVT. Both a driving wheel group and a driven wheel group comprise a movable wheel and a fixed wheel, a ball screw is respectively sleeved on a driving shaft and a driven shaft, the ball screw is located on the outer side of the movable wheel, a self-pressurize device is arranged between the ball screw and the movable wheel, a stepping motor is meshed with the ball screw on the driving shaft through gear transmission, and the ball screw on the driving shaft is meshed with the ball screw on the driven shaft through a transmission gear. An axially belt deflection correcting cam is arranged on the driving shaft outside the fixed wheel. The automobile CVT has the advantages that the running is stable, the gear range is wide, the speed can be shifted continuously and gently, the control is easy, the adjusting function and adaptability for the external loading are good, and an optimum matching between a transmission system and engine behaviors is achieved. Therefore, energy is saved to a greater extent, and the economical efficiency is good. Meanwhile, the metal strap keeps perpendicularity to the transmission shaft, so that the scope of the transmission ratio is further expanded, the transmission efficiency is promoted, and the service life of the machine is prolonged.
Description
Technical field
The present invention relates to the employed stepless speed variator of automobile, especially relate to a kind of metal tape (chain) infinitely variable speed transmission that is applied to car transmissions.
Background technique
CVT (Continuously Variable Transmission) technology is a Variable Speed Technology, adopts driving belt and the variable driven wheel of the working diameter transferring power that matches.Because CVT can realize continuously changing of velocity ratio; thereby the optimum Match of the power train of obtaining and engine operating condition; improve the fuel economy and the power character of car load; improve handiness and riding comfort; also reduced simultaneously toxic emission; help environmental protection, be considered to desirable automotive trannsmission system.
But metal band type stepless speed variator in the market all is to adopt hydraulic system to realize gear ratio and pressurization, and speed change and pressurization clamp device consumed energy are big, and whole efficiency is not ideal enough, and not bringing into play it should have superiority.(AT) compares with fourth gear automatic transmission, and the CVT system can improve 10%-15% with fuel economy, but still just suitable with manual (MT) automobile fuel consumption; Its two, have metal tape deflection problem, limited the expansion of gear range, and, have a strong impact on speed changer transmission efficiency and working life.
For above-mentioned speed change and the big problem of pressurization device energy consumption, also the someone proposes the scheme that a kind of mechanical spring pressurization replaces the hydraulic pressurization speed control system of power consumption, but the impacting force of spring pressurization device must be determined by the maximum load requirement, size, the variation of actual load have reduced transmission efficiency and service life of a machine in the time of can not taking running into account.For metal tape deflection problem, there is technological scheme to propose to change the tortuous line of awl and solves band partially, this scheme has in theory better solved band partially.But the metal driving belt is contacted by line with the way of contact of awl dish and changes into a contact, has weakened the carrying and the transmission capacity of steel band, and bent bus awl dish and bent limit friction plate processing cost are higher.
Summary of the invention
At the prior art above shortcomings, the purpose of this invention is to provide a kind of good economy performance, can pressurize automatically according to the size of transmitting torque, and the automatic inclined to one side auto continuously variable transmission of adjusting belt of energy, this stepless speed variator has good adjusting and conformability to external loading, realize the optimum Match of power train and engine operating condition, thereby saving energy to a greater extent.
Technological scheme of the present invention is achieved in that automatic pressurization do not have deflection metal band type auto continuously variable transmission, comprise driving shaft, active wheels, driven shaft, driven wheels and metal driving belt, initiatively wheels and driven wheels are formed by movable wheel and fast pulley, fast pulley is installed on the corresponding transmission shaft, and movable wheel is placed on the corresponding transmission shaft and can slides on axle; Movable wheel and fast pulley on driving shaft and the driven shaft are arranged in a crossed manner; Movable wheel and fast pulley are cone structure, movable wheel forms the V-type groove with the conical surface of fast pulley and contacts with the metal driving belt, it is characterized in that: on driving shaft and driven shaft, be with ball screw respectively, ball screw is positioned at the movable wheel outside, between ball screw and movable wheel, be provided with automatic pressurization device, stepper motor meshes by the ball screw on gear transmission and the driving shaft, ball screw on the driving shaft is by the ball screw on driving gear and driven shaft engagement, and driving shaft is identical with movable wheel movement direction on the driven shaft.
Described automatic pressurization device is made up of steel ball, baffle ring and the radially welding cam be located on the corresponding shaft, and the movable wheel exterior edge face has axial chute, and under the ball screw effect, baffle ring compresses the steel ball on the camming surface and makes steel ball be positioned at axial chute all the time.So radially welding cam is in different moment of torsion rotation processes, by steel ball with force transmission to the axial chute of movable wheel, produce an axial thrust load, this power makes movable wheel to the metal tape pressurization and with change in torque.
Radially welding cam has different lift angles at axial diverse location, promptly radially welding cam is different at the sectional profile curve lin of axial diverse location, like this when different drive ratios, steel ball is in the position by the velocity ratio regulation, the transmission radially welding cam that same torque produced is to the amount of force difference of steel ball, this has just guaranteed when different drive ratios, and the awl dish just in time adapts with the institute transmitting torque to the axial clamping force size of driving belt.Because, the different drive ratios place, because the radius of clean-up difference of transmission awl dish, even transmit identical moment of torsion, its required clamping force size also is different.
Further, described radially welding cam structure in the shape of a spiral on axle, the fast pulley exterior edge face of driving shaft has the axial cam structure, be positioned at the fast pulley outside on the driving shaft and be provided with the axial zone deflection correction cam corresponding, the deflection of metal tape when this structure is used for correcting the velocity ratio variation with described axial cam structure.When the movable wheel on the driving shaft moves and when changing velocity ratio vertically, because the helix structure of welding cam radially, make the driving shaft movable wheel that connects by the key cover and fast pulley produce rotation together with respect to driving shaft, this relatively rotates and makes the correction cam structure of driving shaft fast pulley outer end have an effect, make the axial position generation small variations of driving shaft fast pulley, so just realized automatic correction driving belt deflection, the design of correction cam curve will guarantee when different drive ratios, the axial position adjustment amount of driving shaft fast pulley can keep metal tape vertical with transmission shaft just, is implemented in driving belt zero deflection in the speed-change process.Helix structure on the described radially welding cam axle is made up of two sections different parts of rotation direction vertically, with realize when velocity ratio when 1:1 begins increase or reduce, the driving shaft fast pulley all is to be offset left vertically.
Be provided with on the driving shaft can be on axle the sleeve that movable wheel and fast pulley are rotated synchronously of slippage, movable wheel is connected with the sleeve outer wall key with fast pulley, avoids thus that movable wheel and fast pulley produce relative rotation on the driving shaft.
Be provided with the component spring to ball screw component in ball screw, the component spring is placed on the corresponding shaft, thereby movable wheel is born by the component spring the reaction force part of ball screw.
In the movable wheel of driving shaft be provided with loaded spring between the pressurization device automatically, this loaded spring is given frequent precompression of metal tape, makes startability better.
The present invention has designed the automatic pressurization device of helicoid cam, and the awl dish is followed the variation of transmitting torque size and velocity ratio size automatically to the clamping force of metal tape, has avoided the big shortcoming of hydraulic system efficient low consumption energy that present speed changer adopted; Also overcome the nonadjustable deficiency of spring pressurizing system clamping force.In addition, also designed the another one axial cam, the deflection of metal tape when being used for correcting the velocity ratio variation, it is vertical with transmission shaft that metal tape is remained, thereby can further enlarge gear range, and can improve transmission efficiency, prolongs service life of a machine.And, be to adopt simple straight edge line awl dish and straight flange friction plate, easy processing, contact strength is good.
Compared to existing technology, the present invention is simple in structure, reliable, running is steady, gear range is big, be easy to gently speed change continuously, control has good adjusting and conformability to external loading easily, realizes the optimum Match of power train and engine operating condition, thereby saving energy, good economy performance to a greater extent.Because it is applied to fields such as automobile, lots of production is big, so potential economical, societal benefits are appreciable.And, be obvious results energy-saving and emission-reduction products, meet economy, development in science and technology trend, have great popularizing application prospect and development potentiality.
The axial force that produces in the speed regulating mechanism of the present invention is born without casing, can constitute seal force system on axle, so can reduce the complexity of casing.
Description of drawings
Fig. 1-structural representation of the present invention;
Fig. 2-cam press composition;
Fig. 3-Fig. 2 side view;
Fig. 4-axial zone deflection correction cam mechanism figure.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, as can be seen, auto continuously variable transmission of the present invention comprises casing 1 from the figure, be provided with driving shaft 2, active wheels, driven shaft 3, driven wheels and metal driving belt 4 in casing 1, driving shaft 2 and driven shaft 3 are provided with end cap by Bearing Installation on casing 1 and at two ends.Initiatively wheels and driven wheels are formed by movable wheel 5 and fast pulley 6, and wherein, the fast pulley 6 on the driven shaft 3 is one-body molded with driven shaft 3; Fast pulley 6 on the driving shaft 2 is relative movable wheel, itself is not to maintain static, and inclined to one side for adjusting belt, the fast pulley 6 on the driving shaft 2 can have slightly mobile under the effect of band deflection correction mechanism vertically.Movable wheel 5 on driving shaft 2 and the driven shaft 3 is placed on the corresponding transmission shaft and can slides on axle.On driving shaft 2, be provided with can be on axle the sleeves 7 that movable wheel 5 and fast pulley 6 are rotated synchronously of slippage, movable wheel 5 is connected with sleeve 7 outer wall keys with fast pulley 6, avoids movable wheel and fast pulley to produce relative rotation thus.Movable wheel 5 and fast pulley 6 on driving shaft 2 and the driven shaft 3 are arranged in a crossed manner; Movable wheel 5 is a cone structure with fast pulley 6, and movable wheel 5 forms the V-type groove with the conical surface of fast pulley 6 and contacts with metal driving belt 4.Be respectively equipped with ball screw 8 on driving shaft 2 and driven shaft 3, ball screw 8 is positioned at movable wheel 5 outsides, is provided with automatic pressurization device 9 between ball screw 8 and movable wheel 5.Outside casing 1, be provided with stepper motor 10, stepper motor 10 is by 8 engagements of the ball screw on gear transmission (deceleration gear group) and the driving shaft 2, ball screw 8 on the driving shaft 2 is by 8 engagements of the ball screw on driving gear and the driven shaft 3, make the movable wheel 5 on driving shaft 2 and the driven shaft 3 do moving of equidirectional, so initiatively the radius of wheels and driven wheels just forms side increase, the situation that one side reduces realizes speed change.
The present invention adopts the automatic pressurization device of cam, and as Fig. 2, Fig. 3 and shown in Figure 4: it is made up of baffle ring 11, steel ball 12 and the radially welding cam 13 be located on the corresponding shaft.Movable wheel 5 exterior edge faces have axial chute 14, and the axial slope of skewed slot 14 is by being changed by the steel ball position of velocity ratio decision.Ball screw 8 compresses baffle ring 11 by angular contact ball bearing 15, by baffle ring 11 steel ball on the camming surface 12 is compressed to make steel ball 12 be positioned at axial chute 14 all the time.Radially welding cam 13 has different lift angles at axial diverse location, promptly radially welding cam is different at the sectional profile curve lin of axial diverse location, like this when different drive ratios, steel ball is in the position by the velocity ratio regulation, and the transmission radially welding cam that same torque produced is to the amount of force difference of steel ball 12.When different drive ratios is represented in the double dot dash line of Fig. 4 right-hand component, the location track of steel ball on welding cam.This pressurization device makes the circumferential components of transferring power at first produce radially plus-pressure by skewed slot, produces axial pressing force by the supporting plane of baffle ring and the skewed slot on the movable wheel then.The present invention's axial pressing force when speed governing changes with velocity ratio, and can make driving belt tensioning always with the automatic pressurization device of torque proportional no gap conversion, reduces steel band and skids.
Above-mentioned band deflection correction mechanism is such: see Fig. 4, fast pulley 6 exterior edge faces of driving shaft 2 have axial cam structure 16, be positioned at fast pulley 6 outsides on the driving shaft 2 and be provided with the axial zone deflection correction cam 17 corresponding with described axial cam structure, be provided with between two cams and become the roll piece 18 of sliding friction into rolling friction, to reduce friction, the deflection of metal tape when this structure is used for correcting the velocity ratio variation, both interactivelies are seen Fig. 4 left-hand component.Described radially welding cam 13 structure in the shape of a spiral on axle, when the movable wheel on the driving shaft moves and when changing velocity ratio vertically, because the helix structure of welding cam radially, make the driving shaft movable wheel that connects by the key cover and fast pulley produce rotation together with respect to driving shaft, this relatively rotates and makes the correction cam structure of driving shaft fast pulley outer end have an effect, make the axial position generation small variations of driving shaft fast pulley, so just realized automatic correction driving belt deflection, the design of correction cam curve will guarantee when different drive ratios, the axial position adjustment amount of driving shaft fast pulley can keep metal tape vertical with transmission shaft just, is implemented in driving belt zero deflection in the speed-change process.Described radially welding cam structure in the shape of a spiral on axle, spiral is made up of two sections different parts of rotation direction vertically, with realize when velocity ratio when 1:1 begins increase or reduce, the driving shaft fast pulley all is to be offset left vertically.
Be provided with the component spring 19 to ball screw component in ball screw 8, component spring 19 is placed on the corresponding shaft, thereby movable wheel is born by the component spring the reaction force part of ball screw.
In the movable wheel 5 of driving shaft 2 be provided with loaded spring 20 between the pressurization device 9 automatically, this loaded spring makes movable wheel give metal tape a frequent precompression, makes startability better.
Speed regulating mechanism of the present invention is made up of ball screw transmission and stepper motor and gear reduction of speed group, can make the movable wheel move left and right realize stepless speed regulation by stepper motor, and its working principle is:
By pulse stepper motor 10 is rotated, pass through gear reduction of speed group again, drive ball screw 8 and move, promotion angular contact ball bearing 15 moves conical surface movable wheel 5 is moved; Aspect driven shaft 3, when ball screw 8 rotates, because the effect of gear, will make moving of another ball screw generation and last ball screw equidirectional, thereby can drive two conical surface movable wheel and do moving of equidirectional, radius increases respectively and reduces, and can reach the purpose that changes velocity ratio.
Welding cam and band deflection correction cam structure also can be arranged on the driven shaft or be arranged on simultaneously on driving shaft and the driven shaft.
Band deflection correction cam structure and automatic welding cam structure also can independently respectively adopt and be arranged on separately on driving shaft or the driven shaft, or are arranged on simultaneously on driving shaft and the driven shaft, only play and correct with inclined to one side effect, or only realize the effect of automatic pressurization.
Claims (6)
1, the no deflection metal band type auto continuously variable transmission of automatic pressurization, comprise driving shaft (2), active wheels, driven shaft (3), driven wheels and metal driving belt (4), initiatively wheels and driven wheels are formed by movable wheel (5) and fast pulley (6), fast pulley (6) is installed on the corresponding transmission shaft, and movable wheel (5) is placed on the corresponding transmission shaft and can slides on axle; Movable wheel on driving shaft and the driven shaft (5) and fast pulley (6) are arranged in a crossed manner; Movable wheel (5) is a cone structure with fast pulley (6), movable wheel (5) forms the V-type groove with the conical surface of fast pulley (6) and contacts with metal driving belt (4), it is characterized in that: on driving shaft (2) and driven shaft (3), be with ball screw (8) respectively, ball screw (8) is positioned at movable wheel (5) outside, between ball screw (8) and movable wheel (5), be provided with automatic pressurization device (9), stepper motor (10) meshes by the ball screw on gear transmission and the driving shaft (8), ball screw (8) on the driving shaft (2) is by the ball screw (8) on driving gear and the driven shaft (3) engagement, and driving shaft is identical with movable wheel movement direction on the driven shaft.
2, automatic pressurization according to claim 1 does not have deflection metal band type auto continuously variable transmission, it is characterized in that: described automatic pressurization device (9) is made up of steel ball (12), baffle ring (11) and the radially welding cam (13) be located on the corresponding shaft, radially welding cam (13) has different lift angles at axial diverse location, movable wheel (5) exterior edge face has axial chute (14), under the ball screw effect, baffle ring (11) compresses the steel ball on the camming surface (12) and makes steel ball be positioned at axial chute (14) all the time.
3, automatic pressurization according to claim 2 does not have deflection metal band type auto continuously variable transmission, it is characterized in that: described radially welding cam (13) structure in the shape of a spiral on axle, spiral is made up of two sections different parts of rotation direction vertically, is positioned at fast pulley (6) outside on the driving shaft (2) and is provided with axial zone deflection correction cam (17).
4, there is not deflection metal band type auto continuously variable transmission according to claim 1 or 2 or 3 described automatic pressurizations, it is characterized in that: on driving shaft (2), be provided with can be on axle the sleeve (7) that movable wheel (5) and fast pulley (6) are rotated synchronously of slippage, movable wheel (5) is connected with sleeve (7) outer wall key with fast pulley (6).
5, automatic pressurization according to claim 4 does not have deflection metal band type auto continuously variable transmission, it is characterized in that: be provided with the component spring (19) to ball screw component in ball screw (8), the component spring is placed on the corresponding shaft.
6, automatic pressurization according to claim 4 does not have deflection metal band type auto continuously variable transmission, it is characterized in that: in the movable wheel (5) of driving shaft (2) be provided with loaded spring (20) between the pressurization device (9) automatically, this preloading spring (20) makes movable wheel (5) give (4) precompressions of metal driving belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102372766A CN101446334B (en) | 2008-12-29 | 2008-12-29 | Automatic compression deflexion-free automobile Metal V-belt CVT (continuously variable transmission) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102372766A CN101446334B (en) | 2008-12-29 | 2008-12-29 | Automatic compression deflexion-free automobile Metal V-belt CVT (continuously variable transmission) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101446334A true CN101446334A (en) | 2009-06-03 |
| CN101446334B CN101446334B (en) | 2010-12-22 |
Family
ID=40742144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102372766A Expired - Fee Related CN101446334B (en) | 2008-12-29 | 2008-12-29 | Automatic compression deflexion-free automobile Metal V-belt CVT (continuously variable transmission) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101446334B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012068989A1 (en) * | 2010-11-24 | 2012-05-31 | Cheng Naishi | Intelligent pressure continuously variable transmission |
| CN103216592A (en) * | 2012-01-18 | 2013-07-24 | 陈雪妍 | Belt type continuously variable transmission |
| CN104061301A (en) * | 2013-03-21 | 2014-09-24 | 本田技研工业株式会社 | Continuously Variable Transmission |
| CN105151032A (en) * | 2015-09-25 | 2015-12-16 | 清华大学 | Load sensing transmission mechanism and brake system having load sensing transmission mechanism |
| CN105972179A (en) * | 2016-07-07 | 2016-09-28 | 常州东风无级变速器有限公司 | Conical disc type continuously variable transmission and speed regulating mechanism thereof |
| CN107131271A (en) * | 2017-05-08 | 2017-09-05 | 重庆高金实业有限公司 | A kind of automatically controlled CVT stepless speed variator systems |
| CN108548773A (en) * | 2018-03-30 | 2018-09-18 | 河海大学 | Detect the auxiliary device and its application method of reinforcing bar stainless property under by curved state |
| CN108999939A (en) * | 2017-06-06 | 2018-12-14 | 通用汽车环球科技运作有限责任公司 | Stepless transmission |
-
2008
- 2008-12-29 CN CN2008102372766A patent/CN101446334B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012068989A1 (en) * | 2010-11-24 | 2012-05-31 | Cheng Naishi | Intelligent pressure continuously variable transmission |
| CN103216592A (en) * | 2012-01-18 | 2013-07-24 | 陈雪妍 | Belt type continuously variable transmission |
| CN104061301A (en) * | 2013-03-21 | 2014-09-24 | 本田技研工业株式会社 | Continuously Variable Transmission |
| CN104061301B (en) * | 2013-03-21 | 2016-10-12 | 本田技研工业株式会社 | Buncher |
| CN105151032A (en) * | 2015-09-25 | 2015-12-16 | 清华大学 | Load sensing transmission mechanism and brake system having load sensing transmission mechanism |
| CN105972179A (en) * | 2016-07-07 | 2016-09-28 | 常州东风无级变速器有限公司 | Conical disc type continuously variable transmission and speed regulating mechanism thereof |
| CN105972179B (en) * | 2016-07-07 | 2018-08-07 | 常州东风无级变速器有限公司 | Cone disk type contiuously variable transmission and its speed adjusting gear |
| CN107131271A (en) * | 2017-05-08 | 2017-09-05 | 重庆高金实业有限公司 | A kind of automatically controlled CVT stepless speed variator systems |
| CN108999939A (en) * | 2017-06-06 | 2018-12-14 | 通用汽车环球科技运作有限责任公司 | Stepless transmission |
| CN108548773A (en) * | 2018-03-30 | 2018-09-18 | 河海大学 | Detect the auxiliary device and its application method of reinforcing bar stainless property under by curved state |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101446334B (en) | 2010-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101446334B (en) | Automatic compression deflexion-free automobile Metal V-belt CVT (continuously variable transmission) | |
| CN1260498C (en) | Planet gear and use thereof | |
| RU2251639C1 (en) | Driving pulley for steplessly adjustable drive | |
| CN101328961B (en) | Bimetallic strip stepless variable drive | |
| CN103438177B (en) | Many cam self-adaptings multidrive | |
| CN105129016A (en) | Side-hung bow cone swing type self-adaption automatic variable-speed drive assembly for electric motorcycle | |
| CN101975269A (en) | Speed ratio control device with belt type continuously variable transmission | |
| CN201344234Y (en) | Self-pressurized non-deflection metal belt type automobile stepless transmission | |
| CN101705981B (en) | Continuously variable transmission of snowmobile | |
| CN105216964A (en) | Battery-operated motor cycle waveform frictional transmission side hanging self-adapting automatic gear shift drives assembly | |
| CN103244611A (en) | Clamping force adjusting mechanism of an electro-mechanical CVT (Continuously Variable Transmission) | |
| CN105090421A (en) | Bow cone type two-gear self-adaptation automatic variable speed driving assembly for external rotor motor of electric motorcycle | |
| CN201858348U (en) | Speed ratio control device of belt continuous variable transmission | |
| CN101260930A (en) | Infinite variable speed highly effective wheel | |
| CN105156618A (en) | External rotor motor cyrtoconic swing type self-adaption automatic variable speed drive assembly of electric motor car | |
| CN105299217A (en) | Pendulum type self-adaption automatic variable speed drive assembly of electric motorcycle inner rotor motor bow cone | |
| CN102003508A (en) | Motor actuation metal belt type continuously variable transmission (CVT) | |
| CN219317547U (en) | Toothed belt wheel and steel belt transmission mechanism of CVT transmission | |
| US4736642A (en) | Friction-wheel torque converter | |
| CN100552261C (en) | The friction plate structure that is used for the self adaption adjusting of stepless speed variator | |
| CN201723683U (en) | Stepless speed changer driving wheel of snowmobile | |
| CN112728029B (en) | CVT transmission mechanism | |
| CN205371498U (en) | Metal belt buncher with motor control machinery transmission speed governing | |
| CN100416133C (en) | Four wheel linked stepless belt wheel speed-variable transmission device | |
| CN201747881U (en) | Drum cone wheel mechanical continuously variable transmission device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20111229 |