Transmission unit for motor vehicles with reverse drive and motor vehicle comprising the transmission unit
AssigneePiaggio & C. S.P.A.
InventorsPaolo NESTI, Stefano DOVERI
Life of this patent
Estimating the term…
Abstract
The transmission unit (15) for motor vehicle (1) comprises a shaft (23) of the driving wheel, operatively connected to a main drive (19, 97) to control forward drive, and a reverse drive electric motor (21). The transmission unit further comprises a control bushing (47) rotated by the reverse drive electric motor (21), and a driven transmission bushing (63), operatively connected to the shaft (23) of the driving wheel. An actuator (121) is provided for controlling mutual coupling between the control bushing (47) and the driven transmission bushing (63) to transmit the motion of the reverse drive electric motor (21) to the shaft (23) of the driving wheel.
Claims25
A transmission unit with a continuously variable transmission, for motor vehicle, the transmission unit comprising:
- a shaft of the driving wheel operatively connected to a main drive to control forward drive;
- a reverse drive electric motor;
- a control bushing rotated by the reverse drive electric motor;
- a driven transmission bushing, operatively connected to the shaft of the driving wheel;
- and
- an actuator for controlling mutual coupling between the control bushing and the driven transmission bushing to transmit the motion of the reverse drive electric motor to the shaft of the driving wheel.
A motor vehicle comprising:
- a transmission unit comprising:
- a shaft of the driving wheel operatively connected to a main drive to control forward drive;
- a reverse drive electric motor;
- a control bushing rotated by the reverse drive electric motor;
- a driven transmission bushing, operatively connected to the shaft of the driving wheel;
- and
- an actuator for controlling mutual coupling between the control bushing and the driven transmission bushing to transmit the motion of the reverse drive electric motor to the shaft of the driving wheel;
- and
- an internal combustion engine operatively connected to the driving wheel by means of the main drive of the transmission unit.
Dependencies are inferred from the claim text.