Driving unit for an electric motor driven bicycle

Details Driving unit for an electric motor driven bicycle Driving unit for an electric motor driven bicycle

1997-09-25

2000-01-11

Camby, Richard M.

Motor vehicles

Special wheel base

Having only two wheels

180 658, 180 656, B62K 1100

Patent

active

060125381

ABSTRACT:
In a driving unit for an electric motor driven bicycle, a motor (31) has an output shaft coaxial with a crank shaft (39) of a pedal. A planet roller reducer (40) has a sun roller shaft coincident with the output shaft. Through the planet roller reducer (40) and a two-stage reducing gear mechanism (50) for further reducing the output of the planet roller reducer (40), a torque of the motor (31) is transmitted to a driving chain sprocket (4). Provided that the torque of the motor (31) exceeds a predetermined pedaling torque level, the torque is transmitted to the driving chain sprocket (4).

REFERENCES:
patent: 5805767 (1999-07-01), Macer et al.
patent: 5819868 (1998-10-01), Noike et al.
patent: 5901807 (1999-05-01), Tseng

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