Hub transmission for a bicycle and method for shifting such a hub transmission

摘要

The invention relates to a hub transmission for a bicycle comprising:
- a hub axle (10);
- a driver (11) rotatably supported by the hub axle (10);
- a hub shell (12) rotatably supported by the hub axle (10);
- a power transmission mechanism (13) disposed between the driver (11) and the hub shell (12) for communicating rotational power from the driver (11) to the hub shell (12) through a plurality of power transmission paths; and
- a shift mechanism (14) for selecting one of the plurality of power transmission paths.
To reduce shifting shocks, the inventive hub transmission further comprises a power transmission auxiliary mechanism (15) disposed between the driver (11) and the hub shell (12) for communicating rotational power from the driver (11) to the hub shell (12).