A bicycle (100) front shifting system includes operable to transmit a wireless signal, a crank assembly (132) with two crank arms (134) and a pedal (136 )on each of the two crank arms (134). The crank assembly (132) is rotatable about a rotation axis. A front shift unit (150) is coupled to the crank assembly (132) and is rotatable about the rotation axis. The front shift unit (150) includes a chain ring component with a big chain ring (152) and a small chain ring (154). The small chain ring (154) has a small diameter and the big chain ring (154) has a big diameter that is larger than the small diameter. A shift mechanism is coupled to and rotatable with the chain ring component about the rotation axis. The shift mechanism is configured to receive the wireless signal from the shifter (128) and to shift a chain (138) between the big chain ring (152) and the small chain ring (154) according to the wireless signal.
BICYCLE FRONT SHIFTING SYSTEM
FAHRRAD-FRONTSCHALTSYSTEM
SYSTÈME DE CHANGEMENT DE VITESSES AVANT DE BICYCLETTE
2020-05-06
Patent
Electronic Resource
English
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
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