Infinitely-variable gear system for e.g. bicycles, has clutch axially supported in transmission housing, large toothed wheel small gear driving spur gear, and pinion large gear driving chain drive, which is arranged outside housing

摘要

The system has an expanding coupling (16) including a support ring (16a), where the support sing and an inner housing (40) are non-rotatably connected with a transmission housing (30). The expanding clutch (17) is axially supported in the transmission housing. Double-tapered rollers are rotatably driven on frictional contacts (2b-2d) through the friction ring. A small gear (4a) of a large toothed wheel (4b) drives a spur gear. A large gear of a pinion (11) drives a chain drive, which is arranged outside the transmission housing.