A vehicle includes a body having a first part and a second part, which is moveably coupled to the first part. The vehicle further includes a pedal assembly having a first component coupled to the first part and a wheel assembly having a second component coupled to the second part. The vehicle further includes an extendable drive shaft having a first member and a second member. The first member is coupled to the first component and the second member is coupled to the second component. The vehicle further includes a locking mechanism having a locking member coupled to the first part and the second part of the body. The locking member, in an unlocked position, unlocks the second part from the first part to allow the second part to move over the first part, which may cause a change in a length of the extendable drive shaft.

A vehicle includes a body having a first part and a second part, which is moveably coupled to the first part. The vehicle further includes a pedal assembly having a first component coupled to the first part and a wheel assembly having a second component coupled to the second part. The vehicle further includes an extendable drive shaft having a first member and a second member. The first member is coupled to the first component and the second member is coupled to the second component. The vehicle further includes a locking mechanism having a locking member coupled to the first part and the second part of the body. The locking member, in an unlocked position, unlocks the second part from the first part to allow the second part to move over the first part, which may cause a change in a length of the extendable drive shaft.

In a drive unit attached to a vehicle-body frame of an electric-motor-assisted bicycle including a one-way clutch including an outer member, an inner member, a plurality of clutch lugs, a plurality of springs, and a plurality of pins. Clutch teeth are located on one of an inner peripheral portion of the outer member and an outer peripheral portion of the inner member. The clutch lugs and the springs are located on the other of the inner peripheral portion and the outer peripheral portion. A number of the clutch lugs is an even number not smaller than four. A number of the clutch teeth is an even number that is not a multiple of the number of the clutch lugs. A number of the springs is half the number of clutch lugs. Each spring exerts a biasing force on two of the clutch lugs that are circumferentially adjacent. Each pin is in contact with one of the springs.

In a drive unit attached to a vehicle-body frame of an electric-motor-assisted bicycle including a one-way clutch including an outer member, an inner member, a plurality of clutch lugs, a plurality of springs, and a plurality of pins. Clutch teeth are located on one of an inner peripheral portion of the outer member and an outer peripheral portion of the inner member. The clutch lugs and the springs are located on the other of the inner peripheral portion and the outer peripheral portion. A number of the clutch lugs is an even number not smaller than four. A number of the clutch teeth is an even number that is not a multiple of the number of the clutch lugs. A number of the springs is half the number of clutch lugs. Each spring exerts a biasing force on two of the clutch lugs that are circumferentially adjacent. Each pin is in contact with one of the springs.

Provided herein is an electrically operated bicycle including a first frame, a second frame coupled to the first frame and including a seat, a first axle frame supporting a front axle connected to a front wheel and rotatably connected to one end of the first frame, a second axle frame supporting a rear axle connected to a rear wheel, a driving member configured to apply a driving force to at least one of the front wheel and the rear wheel, a battery pack electrically connected to the driving member, and an engagement member coupled to the battery pack and configured to fix the battery pack to at least one of the first frame and the second frame.

The present invention relates to a drive assembly (10) for a manually driven vehicle (80), in particular a bicycle or a pedelec, with an electric auxiliary drive (24), wherein the drive assembly (10) has a first drive shaft (12) for a manual drive and a rotor (20) of the electric auxiliary drive (24), and wherein the first drive shaft (12) and the rotor (20) of the electric auxiliary drive (24) are coupled to a common drive element (29), wherein the first drive shaft (12) and the rotor (20) of the electric auxiliary drive (24) are coupled to the drive element (29) by means of a harmonic drive (25), wherein the harmonic drive (25) has an outer sleeve (28) with an internal toothing system (62) and a deformable inner sleeve (26) with an external toothing system (64) and a shaft generator (27), wherein the shaft generator (27) is at least indirectly connected fixedly to the rotor (20) of the electric auxiliary drive (24) so as to rotate with it, wherein the deformable inner sleeve (26) is at least indirectly connected fixedly to the first drive shaft (12)

The present invention relates to a drive assembly (10) for a manually driven vehicle (80), in particular a bicycle or a pedelec, with an electric auxiliary drive (24), wherein the drive assembly (10) has a first drive shaft (12) for a manual drive and a rotor (20) of the electric auxiliary drive (24), and wherein the first drive shaft (12) and the rotor (20) of the electric auxiliary drive (24) are coupled to a common drive element (29), wherein the first drive shaft (12) and the rotor (20) of the electric auxiliary drive (24) are coupled to the drive element (29) by means of a harmonic drive (25), wherein the harmonic drive (25) has an outer sleeve (28) with an internal toothing system (62) and a deformable inner sleeve (26) with an external toothing system (64) and a shaft generator (27), wherein the shaft generator (27) is at least indirectly connected fixedly to the rotor (20) of the electric auxiliary drive (24) so as to rotate with it, wherein the deformable inner sleeve (26) is at least indirectly connected fixedly to the first drive shaft (12)

A multi-wheel-drive bicycle that includes a dual chain-and-sprocket drive mechanism mated with a two-opposite-sided paddle-main-sprocket system is provided. The multi-wheel-drive bicycle comprises a frame having first and second opposing sides and having front, rear and lower ends. A front wheel is rotatably mounted on the front end of the frame and a rear wheel is rotatably mounted on the rear end of the frame. The multi-wheel-drive bicycle further comprises a chain-driven rear-drive mechanism configured for transmitting rotational power to the rear wheel. The chain-driven rear-drive mechanism includes a rear main-drive sprocket disposed on the first side of the frame and located at the lower end of the frame. The multi-wheel-drive bicycle further comprises a chain-driven front-drive mechanism configured for transmitting rotational power to the front wheel. The chain-driven front-drive mechanism includes a front main-drive sprocket disposed on the second side of the frame being opposite of the first side of the frame and located at the lower end of the frame.

A linear gear shift mechanism for chainless vehicles includes a gear shift unit having a support rotator, transmission balls and driving posts, with the transmission balls disposed in the support rotator, with a cylindrical receiving portion disposed on each transmission ball radially, with the driving posts disposed in the cylindrical receiving portions along radial direction of the support rotator and rotating from radial direction thereof to but not reach axial direction of the support rotator; an axial power input rotator having an inward-tilted power input annular surface; an axial power output rotator having an inward-tilted power output annular surface, with the transmission balls clamped between inward-tilted power input and output annular surfaces and support rotator; a tread-required transverse power source meshing with axial power input rotator; an axial power transfer portion meshing with axial power output rotator axially; a transverse power output portion meshing with axial power transfer portion.

An automatic internal transmission and a bicycle are provided. The automatic internal transmission includes a hub shaft, an input mechanism, an output mechanism, a transmission mechanism having a first planetary gear train and a second planetary gear train, and an automatic shifting control mechanism having a clutch control unit and a centrifugal block being connected to the output mechanism and the clutch control unit. The centrifugal block can rotate relative to the output mechanism to a first state in a first direction, to drive the clutch control unit to rotate, so that a driving force is transmitted via the first planetary gear train. The centrifugal block can further rotate relative to the output mechanism to a second state in the first direction, to drive the clutch control unit to further rotate, so that the driving force is transmitted via the second planetary gear train.