Bicycle gear, has continuously variable hub friction roller gear and electrical actuator, and hub dynamo charging rechargeable battery during drive operation, and control unit changing gear ratio based on pedal force by utilizing actuator

摘要

The gear has a continuously variable hub friction roller gear (1) and an electrical actuator that is utilized for changing the transmission of the gear. A rechargeable battery is utilized for supplying energy to the actuator. A hub dynamo (2) charges the battery during drive operation. Pedal force is acquired from pedaling arms and a control unit (4) changes gear ratio based on the pedal force by utilizing the actuator.