Automatic gearchange for bicycle together with display - has stepping motors coupled to cable and operated by selector

摘要

A bicycle has a transmission with a number of gears that are remotely operated by cable (6) coupled to stepping motor drives (11). The unit is housed in a sealed box fixed to the frame. A cover is secured by bolts and is sealed against external effects. Secured to the handle bars of the bicycle is a selector that connects with an optical display to indicate the gear engaged. ADVANTAGE - Automatic gearchange with display.