CN201391581Y - Electromagnetic control clutch speed change device - Google Patents

Electromagnetic control clutch speed change device Download PDF

Info

Publication number
CN201391581Y
CN201391581Y CN200820169440U CN200820169440U CN201391581Y CN 201391581 Y CN201391581 Y CN 201391581Y CN 200820169440 U CN200820169440 U CN 200820169440U CN 200820169440 U CN200820169440 U CN 200820169440U CN 201391581 Y CN201391581 Y CN 201391581Y
Authority
CN
China
Prior art keywords
transmission shaft
electromagnetic control
retainer
high speed
follower
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.)
Expired - Fee Related
Application number
CN200820169440U
Other languages
Chinese (zh)
Inventor
缪仙福
李蓉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN200820169440U priority Critical patent/CN201391581Y/en
Application granted granted Critical
Publication of CN201391581Y publication Critical patent/CN201391581Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Structure Of Transmissions (AREA)

Abstract

The utility model provides an electromagnetic control clutch speed change device, which solves the problems of the prior electric vehicles that the speed control variation range is small and the transmission torque is small, and comprises a shell and a motor which is arranged inside the shell, wherein a motor driving shaft is arranged between a driving shaft and a transmission shaft B, a transmission shaft A is engaged with the driving shaft through a gear, the transmission shaft B is connected with a low-speed driven wheel and a high-speed driven wheel with the tooth quantity being less than that of the low-speed driven wheel, the transmission shaft A is provided with a low-speed driving wheel and a high-speed driving wheel which are correspondently connected with the low-speed driven wheel and the high-speed driven wheel, the low-speed driven wheel is connected with the transmission shaft B through a uni-directional clutch, and an electromagnetic control clutch mechanism which controls the high-speed driven wheel and the transmission shaft B to realize the separation and reunion through the electromagnetism is arranged between the high-speed driven wheel and the transmission shaft B. The electromagnetic control clutch speed change device has the advantages of speed-varied shifting, large adjustment range, variable transmission torque and the like.

Description

A kind of Electromagnetic Control clutch speed variator
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of speed change gear, particularly a kind of Electromagnetic Control clutch speed variator.
Background technique
At present, the type motor-driven of electric motor car mainly contains two classes: the first kind is that motor places on the vehicle frame, by mechanical drive modes such as chain or gears the power of motor is reached wheel axle; Second class is that motor is directly installed on the wheel axle, constitutes the part of wheel, and its structure is that the rotor of motor is fixedly mounted in the wheel hub, and tire rotates with rotor and wheel hub, and the stator and the wheel shaft of motor place one, promptly so-called electric wheel form.
The driving mechanism that the structure of the 3rd class is generally motor and is connected with motor linkage, driving mechanism includes the transmission case that is arranged on motor one side and is movably arranged on transmission shaft and secondary transmission shaft in the transmission case, one time transmission shaft is installed between motor driving shaft and the secondary transmission shaft, be connected with on transmission shaft be connected in motor driving shaft on the middle gear that is meshed of small gear, be connected with on the secondary transmission shaft and be connected in the gearwheel that small gear on the transmission shaft is meshed, and secondary transmission shaft one end runs through transmission case by the axis hole that is opened on the transmission case opposite side.
Because of this compact structure, increased the moment of torsion of transmission, still, driving torque remains unchanged less and immobilizes, and is particularly inadequate especially in climbing; In addition, the rotational speed regulation of the output of this class motor can only be regulated motor by controller, limited adjustment range, and the regulation range of travelling speed is little, can not satisfy the demand of actual use.
Summary of the invention
The purpose of this utility model is to have above-mentioned shortcoming at existing Electromagnetic Control clutch speed variator, provides a kind of speed regulation scope big, the Electromagnetic Control clutch speed variator that driving torque is variable.
The purpose of this utility model can realize by following technical proposal: a kind of Electromagnetic Control clutch speed variator, comprise housing and be arranged on motor in the housing, in the housing of motor driving shaft one side, be provided with transmission shaft one and transmission shaft two, one end of transmission shaft two passes housing, transmission shaft one is between live axle and transmission shaft two, and transmission shaft one is connected by gear engagement with live axle, it is characterized in that, be connected with the high speed follower that the low speed follower and the number of teeth are less than the low speed follower on the described transmission shaft two, transmission shaft one is provided with and corresponding low speed driving wheel that is connected with the high speed follower of low speed follower and high speed driving wheel, above-mentioned low speed follower is connected with transmission shaft two by overrunning clutch, is provided with the Electromagnetic Control clutch mechanism of realizing clutch by Electromagnetic Control high speed follower and transmission shaft two between above-mentioned high speed follower and the transmission shaft two.
This Electromagnetic Control clutch speed variator can drive drive shaft turns after by electrical power, and transmission shaft one is connected by gear engagement with live axle, and live axle can drive transmission shaft one rotation.Because the low speed follower is connected with transmission shaft two by overrunning clutch, when transmission shaft one rotates,, the low speed follower rotates together thereby driving transmission shaft two by the low speed driving wheel; And the high speed follower is also rotating by the high speed driving wheel, and rotating speed is greater than the low speed follower, but it is sliding state that the Electromagnetic Control clutch mechanism between high speed follower and the transmission shaft two makes high speed follower and transmission shaft two keep releasing orientation, transmission shaft two there is not active force, the zero load of high speed follower, transmission shaft two keeps slowly running state.When Electromagnetic Control clutch mechanism control high speed follower is fastened on the transmission shaft two, the faster rotational speed of transmission shaft two, make overrunning clutch be in sliding state, the low speed follower is only followed the low speed driving wheel and is rotated, lose active force to transmission shaft two, the zero load of low speed follower, transmission shaft two keeps fast state, realizes the mechanical changeover of high low speed.
In addition, according to the same principle and structure, on transmission shaft two, increase by one group of gear ratio high speed follower follower still less, and the Electromagnetic Control clutch mechanism is set, can realize three retaining mechanical speed changes at itself and transmission shaft two.
In above-mentioned Electromagnetic Control clutch speed variator, described Electromagnetic Control clutch mechanism comprises the spline cam that is arranged between high speed follower and the transmission shaft two and is connected with transmission shaft two, be provided with retainer between high speed follower and the spline cam, has the eccentric arc concave surface on the circumferential surface of described spline cam, retainer is provided with the roller that contacts with the eccentric arc concave surface, be provided with between retainer and the spline cam and can make retainer roller be pressed to the spring of cam eccentric arc concave surface lower, be provided with the electromagnet that can adsorb retainer when it is switched in the end of retainer, electromagnet and housing are connected.
Before electromagnet did not have energising, retainer was along with the spline cam rotates synchronously, because the effect of spring, retainer presses to roller cam eccentric arc concave surface lower always, and high speed follower and transmission shaft two remain on sliding state, realized the bottom gear operation.After the electromagnet energising, retainer is adsorbed by electromagnet, and electromagnet is owing to be connected with housing, thereby make spline cam and retainer occur relatively rotating, like this, the active force that retainer overcomes spring makes roller push to spline cam lift direction, roller is resisted against between the inwall of spline cam and high speed follower, so spline cam and high speed follower become the state of being connected, make high speed follower and transmission shaft two fastening, be that Electromagnetic Control clutch mechanism control high speed follower is fastened on the transmission shaft two, realize the top gear operation.
In addition, except the scheme of using electromagnet to be fixed on retainer on the housing or unclamping, can also use the common machinery fixing or the form of friction to realize.
In above-mentioned Electromagnetic Control clutch speed variator, described retainer has the some groups of limit structures of being made up of two limited posts, has restraining groove between two limited posts of every group of limit structure, above-mentioned roller is arranged in the restraining groove, and the eccentric arc concave surface on the circumferential surface of described spline cam is identical with the number of above-mentioned restraining groove.
In above-mentioned Electromagnetic Control clutch speed variator, described electromagnet is connected with power supply, is connected with hand push button between power supply and electromagnet.Utilize hand push button can make things convenient for the user to select according to the actual needs at a high speed or low speed.
In above-mentioned Electromagnetic Control clutch speed variator, the end of described high speed follower is provided with the end cap of fixed retainer, and above-mentioned retainer is fixed in the high speed follower by end cap.Make retainer be limited in the center of high speed follower by end cap, it is compact that structure becomes.
In above-mentioned Electromagnetic Control clutch speed variator, has the gap between the end cap of described electromagnet and fixed retainer.This gap is unsuitable excessive also unsuitable too small, cross conference when making electromagnet absorption retainer magnetic force too small, can't make retainer that roller is pressed to the eccentric circle cambered surface lift direction of spline cam, too small meeting rubs electromagnet and end cap.
In above-mentioned Electromagnetic Control clutch speed variator, one side of described spline cam has the cam orientation post, the bottom surface of described retainer has guiding groove, the cam orientation post inserts in the guiding groove, described spring is arranged on the interior end of guiding groove and acts on the end face of guiding groove, and the other end acts on the cam orientation post.
In above-mentioned Electromagnetic Control clutch speed variator, be provided with bearing between described high speed follower and the transmission shaft two.
In above-mentioned Electromagnetic Control clutch speed variator, described low speed follower, high speed follower, low speed driving wheel and high speed driving wheel are gear, and the gear of every group of correspondence is meshing with each other.Use gear can improve stability of transmission, and can reduce cost.
Compared with prior art, this Electromagnetic Control clutch speed variator has following advantage:
1, this Electromagnetic Control clutch speed variator adopts the Electromagnetic Control clutch mechanism to control the connection of high speed drive wheel or unclamps the gearshift that transmission shaft two is realized high low speed, realize the speed change of motor in the mode that changes gear ratio, the scope of its speed change is increased, change owing to velocity ratio simultaneously makes moment of torsion also become bigger, and this Electromagnetic Control clutch speed variator more is adapted to high pulling torque output.
2, thereby the Electromagnetic Control clutch mechanism of this Electromagnetic Control clutch speed variator adopts electromagnet to hold the gearshift that retainer is realized high low speed, and simple and reliable for structure, cost of production is low.
Description of drawings
Fig. 1 is the structural representation of this Electromagnetic Control clutch speed variator.
Fig. 2 is the structural representation in cross section, roller place in the Electromagnetic Control clutch mechanism of this Electromagnetic Control clutch speed variator.
Fig. 3 is the structural representation in the cross section, Electromagnetic Control clutch mechanism medi-spring place of this Electromagnetic Control clutch speed variator.
Fig. 4 is the blast structural representation of the Electromagnetic Control clutch mechanism of this Electromagnetic Control clutch speed variator.
Among the figure, housing 1, main body 11, upper end cap 12, lower end cap 13, motor 2, rotor 21, live axle 22, bearing 23, gear 24, stator 25, transmission shaft 1, gear 31, transmission shaft 24, spline cam 41, cam orientation post 411, retainer 42, guiding groove 421, limited post 43, restraining groove 44, roller 45, circular arc concave surface 46, spring 47, electromagnet 48, end cap 49, low speed driving wheel 5, high speed driving wheel 6, low speed follower 7, high speed follower 8, seal washer 9, overrunning clutch 10.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, this Electromagnetic Control clutch speed variator, comprising housing 1, motor 2, transmission shaft 1, transmission shaft 24, low speed driving wheel 5, high speed driving wheel 6, low speed follower 7, high speed follower 8, overrunning clutch 10 and Electromagnetic Control clutch mechanism, is the shift speed change of realizing high low speed.
Specifically, housing 1 is fastened by main body 11 and upper and lower end cap 12,13 and forms, and between upper and lower end cap 12,13 and the main body 11 seal washer 9 is set.One side in housing 1 is motor 2, has comprised motor 2 stators 25 and motor 2 rotors 21, and live axle 22 is arranged in the housing 1 by bearing 23 and the one end is connected mutually with rotor 21, and the other end has gear 24 is arranged.Another side in housing 1 is provided with transmission shaft 1 and transmission shaft 24, and an end of transmission shaft 24 passes housing 1, and transmission shaft 1 is between live axle 22 and transmission shaft 24, and transmission shaft 1 is provided with gear 24 meshed gears 31 with live axle 22.
Be connected with low speed follower 7 and diameter high speed follower 8 on the transmission shaft 24 less than low speed follower 7, transmission shaft 1 is provided with and low speed follower 7 and high speed follower 8 corresponding low speed driving wheel 5 that is connected and high speed driving wheels 6, low speed follower 7 is connected with transmission shaft 24 by overrunning clutch 10, be provided with the Electromagnetic Control clutch mechanism of realizing clutch by Electromagnetic Control high speed follower 8 and transmission shaft 24 between high speed follower 8 and the transmission shaft 24, and, be provided with bearing 23 between high speed follower 8 and the transmission shaft 24 for stable.Low speed follower 7, high speed follower 8, low speed driving wheel 5 and high speed driving wheel 6 are gear, and corresponding gear is meshing with each other.
As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, the Electromagnetic Control clutch mechanism comprises the spline cam 41 that is arranged between high speed follower 8 and the transmission shaft 24 and is connected with transmission shaft 24, be provided with retainer 42 between high speed follower 8 and the spline cam 41, retainer 42 has the some groups of limit structures of being made up of two limited posts 43, has restraining groove 44 between two limited posts 43 of every group of limit structure, in restraining groove 44, be provided with roller 45, has eccentric arc concave surface 46 on the circumferential surface of spline cam 41 with restraining groove 44 same number, be provided with between retainer 42 and the spline cam 41 and can make retainer 42 roller 45 be pressed to the spring 47 of cam eccentric arc concave surface 46 lowers, be provided with the electromagnet 48 that retainer 42 can be connected with it when it is switched in the outside of retainer 42, electromagnet 48 is connected with housing 1.Electromagnet 48 and retainer 42 have the gap.This gap is unsuitable excessive also unsuitable too small, crosses conference and makes the electromagnet 48 can't normal sorption retainer 42, and too small meeting rubs electromagnet 48 and retainer 42.Electromagnet 48 is connected with power supply, is connected with hand push button between power supply and electromagnet 48.The end of high speed follower 8 is provided with the end cap 49 of fixed retainer 42, and retainer 42 makes retainer 42 be limited in the center of high speed follower 8 by end cap 49.
One side of spline cam 41 has cam orientation post 411, the bottom surface of retainer 42 has guiding groove 421, cam orientation post 411 inserts in the guiding groove 421, and spring 47 is arranged on guiding groove 421 interior ends and acts on the end face of guiding groove 421, and the other end acts on the cam orientation post 411.
This Electromagnetic Control clutch speed variator can drive live axle 22 after by motor 2 energising and rotate, and transmission shaft 1 and live axle 22 are connected by gear engagement, and live axle 22 can drive transmission shaft one 3 rotations.Because low speed follower 7 is connected with transmission shaft 24 by overrunning clutch 10, when transmission shaft 1 rotates,, low speed follower 7 rotates together thereby driving transmission shaft 24 by low speed driving wheel 5; And high speed follower 8 is also rotating by high speed driving wheel 6, and rotating speed is greater than low speed follower 7, but before electromagnet 48 does not have energising, retainer 42 is along with spline cam 41 rotates together, because the effect of spring 47, retainer 42 presses to roller 45 cam eccentric arc concave surface 46 lowers always, high speed follower 8 remains on sliding state with transmission shaft 24, be that to make high speed follower 8 keep releasing orientations with transmission shaft 24 be sliding state for Electromagnetic Control clutch mechanism between high speed follower 8 and the transmission shaft 24, transmission shaft 24 there is not active force, 8 zero loads of high speed follower, transmission shaft 24 keeps slowly running state.
Press hand push button, after electromagnet 48 energisings, retainer 42 is adsorbed by electromagnet 48, and electromagnet 48 is connected owing to housing 1, relatively rotate thereby make between spline cam 41 and the retainer 42, like this, the active force that retainer 42 overcomes spring 47 makes roller 45 push to spline cam 41 lift directions, roller 45 and be resisted against spline cam 41 and the inwall of high speed follower 8 between, so spline cam 41 and high speed follower 8 become the state of being connected, thereby make high speed follower 8 and transmission shaft 24 fastening, be that Electromagnetic Control clutch mechanism control high speed follower 8 is when being fastened on the transmission shaft 24, the faster rotational speed of transmission shaft 24, overrunning clutch 10 is in sliding state, and low speed follower 7 is followed low speed driving wheel 5 and is rotated, lose active force to transmission shaft 24,7 zero loads of low speed follower, transmission shaft 24 keeps fast state, realizes the mechanical changeover of high low speed.

Claims (9)

1, a kind of Electromagnetic Control clutch speed variator, comprise housing (1) and be arranged on the interior motor of housing (1) (2), in the housing (1) of motor (2) live axle (22) one sides, be provided with transmission shaft one (3) and transmission shaft two (4), one end of transmission shaft two (4) passes housing (1), transmission shaft one (3) is positioned between live axle (22) and the transmission shaft two (4), and transmission shaft one (3) is connected by gear engagement with live axle (22), it is characterized in that, be connected with the high speed follower (8) that the low speed follower (7) and the number of teeth are less than low speed follower (7) on the described transmission shaft two (4), transmission shaft one (3) is provided with and corresponding low speed driving wheel (5) that is connected with high speed follower (8) of low speed follower (7) and high speed driving wheel (6), above-mentioned low speed follower (7) is connected with transmission shaft two (4) by overrunning clutch (10), is provided with the Electromagnetic Control clutch mechanism of realizing clutch by Electromagnetic Control high speed follower (8) and transmission shaft two (4) between above-mentioned high speed follower (8) and the transmission shaft two (4).
2, Electromagnetic Control clutch speed variator according to claim 1, it is characterized in that, described Electromagnetic Control clutch mechanism comprises the spline cam (41) that is arranged between high speed follower (8) and the transmission shaft two (4) and is connected with transmission shaft two (4), be provided with retainer (42) between high speed follower (8) and the spline cam (41), has eccentric arc concave surface (46) on the circumferential surface of described spline cam (41), retainer (42) is provided with the roller (45) that contacts with eccentric arc concave surface (46), be provided with between retainer (42) and the spline cam (41) and can make retainer (42) roller (45) be pressed to the spring of cam eccentric arc concave surface (46) lower, be provided with the electromagnet (48) that can adsorb retainer (42) when it is switched in the end of retainer (42), electromagnet (48) is connected with housing (1).
3, Electromagnetic Control clutch speed variator according to claim 2, it is characterized in that, described retainer (42) has the some groups of limit structures of being made up of two limited posts (43), has restraining groove (44) between two limited posts (43) of every group of limit structure, above-mentioned roller (45) is arranged in the restraining groove (44), and the eccentric arc concave surface (46) on the circumferential surface of described spline cam (41) is identical with the number of above-mentioned restraining groove (44).
4, according to claim 2 or 3 or described Electromagnetic Control clutch speed variator, it is characterized in that described electromagnet (48) is connected with power supply, between power supply and electromagnet (48), be connected with hand push button.
5, according to claim 2 or 3 described Electromagnetic Control clutch speed variators, it is characterized in that, the end of described high speed follower (8) is provided with the end cap (49) of fixed retainer (42), and above-mentioned retainer (42) is fixed in the high speed follower (8) by end cap (49).
6, Electromagnetic Control clutch speed variator according to claim 5 is characterized in that, has the gap between the end cap (49) of described electromagnet (48) and fixed retainer (42).
7, according to claim 2 or 3 described Electromagnetic Control clutch speed variators, it is characterized in that, one side of described spline cam (41) has cam orientation post (411), the bottom surface of described retainer (42) has guiding groove (421), cam orientation post (411) inserts in the guiding groove (421), described spring is arranged on the interior end of guiding groove (421) and acts on the end face of guiding groove (421), and the other end acts on the cam orientation post (411).
8, according to claim 1 or 2 or 3 described Electromagnetic Control clutch speed variators, it is characterized in that, be provided with bearing (23) between described high speed follower (8) and the transmission shaft two (4).
9, according to claim 1 or 2 or 3 described Electromagnetic Control clutch speed variators, it is characterized in that, described low speed follower (7), high speed follower (8), low speed driving wheel (5) and high speed driving wheel (6) are gear, and the gear of every group of correspondence is meshing with each other.
CN200820169440U 2008-12-01 2008-12-01 Electromagnetic control clutch speed change device Expired - Fee Related CN201391581Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200820169440U CN201391581Y (en) 2008-12-01 2008-12-01 Electromagnetic control clutch speed change device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200820169440U CN201391581Y (en) 2008-12-01 2008-12-01 Electromagnetic control clutch speed change device

Publications (1)

Publication Number Publication Date
CN201391581Y true CN201391581Y (en) 2010-01-27

Family

ID=41598406

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200820169440U Expired - Fee Related CN201391581Y (en) 2008-12-01 2008-12-01 Electromagnetic control clutch speed change device

Country Status (1)

Country Link
CN (1) CN201391581Y (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102003503A (en) * 2010-11-19 2011-04-06 重庆理工大学 Overrunning type double-clutch transmission
CN102050194A (en) * 2010-12-02 2011-05-11 重庆阿波罗港城科技有限公司 Side hung driving system for two-wheeled electric vehicle
CN107902428A (en) * 2017-11-06 2018-04-13 江阴大地装备股份有限公司 The machine's drive device of bridge type scraper material taking machine
CN110067822A (en) * 2018-01-23 2019-07-30 麦格纳动力系有限公司 One-way clutch assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102003503A (en) * 2010-11-19 2011-04-06 重庆理工大学 Overrunning type double-clutch transmission
CN102050194A (en) * 2010-12-02 2011-05-11 重庆阿波罗港城科技有限公司 Side hung driving system for two-wheeled electric vehicle
CN107902428A (en) * 2017-11-06 2018-04-13 江阴大地装备股份有限公司 The machine's drive device of bridge type scraper material taking machine
CN110067822A (en) * 2018-01-23 2019-07-30 麦格纳动力系有限公司 One-way clutch assembly

Similar Documents

Publication Publication Date Title
CN103010016B (en) Motor rear axle drive assembly
CN202833878U (en) Robot recreational vehicle (RV) speed reducer
CN201391581Y (en) Electromagnetic control clutch speed change device
CN102801245A (en) Electric vehicle hub motor double clutch planet gear-shifting mechanism
CN108482114A (en) A kind of two grades of speed change electric drive axle assemblies of two-row planetary gear formula
CN201298774Y (en) Planetary automatic speed-changing hub motor
CN105156658B (en) Battery-operated motor cycle inner rotor motor pendulum-type self-adapting automatic gear shift drive assembly
CN102303684B (en) Electric hub
CN214690026U (en) Dual-mode two-speed hub motor
CN101968103B (en) Forward and reverse full-overrun gear shifting mechanism
CN201851607U (en) Forward and reverse full-overrunning gear shifting mechanism
CN111336225B (en) Triple planetary gear type in-wheel two-gear automatic speed change mechanism and gear shifting control method thereof
CN201660097U (en) Transmission case of electric vehicle shift driving hub
CN108454393A (en) One kind two keeps off planet speed-change electric drive axle assembly
CN106787429A (en) Hub driven motor
CN206361117U (en) A kind of improved two grades of differential mechanisms
CN109073049B (en) Hub type double-speed changing device
CN109477554B (en) Double-speed change gear
CN209511040U (en) Electric roller formula variable speed assembly for electric vehicle
CN211151726U (en) Double-clutch variable-speed hub
CN113086080A (en) Dual-mode two-speed hub motor
CN208831634U (en) A kind of dedicated second gear gear of battery-operated motor cycle
CN101110536B (en) Rim motor with automatic speed changing function
CN206673774U (en) A kind of anti-interim card device of driver motor gear
CN110843514A (en) Electric vehicle gear shifting driving hub with centrifugal clutch

Legal Events

Date Code Title Description
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: 20100127

Termination date: 20101201