Power-assist system and method for bicycles

Details Power-assist system and method for bicycles Power-assist system and method for bicycles

B - Operations, Transporting

62

K

B62K 11/00 (2006.01) B62M 6/00 (2010.01)

Patent

CA 2433666

A power-assist system for a bicycle by which the bicycle (10) can be operated in various modes. There is a pedal-alone mode, a power assist mode, a combined pedaling and power-assist mode, and a coasting mode. An overriding clutch (180) is positioned between the pedal section and the sprocket (28), and a second overriding clutch (188) is positioned between a speed reducing gear section (64), driven by a motor (68), and a power-assist shaft (66) located in the crank housing (86).

L'invention concerne un système de pédalage assisté pour bicyclette permettant d'actionner la bicyclette (10) selon différents modes, à savoir un mode de pédalage seul, un mode d'assistance moteur, un mode combiné de pédalage et d'assistance et un mode roue libre. Un embrayage (188) de rattrapage est installé entre la section de pédalage et le pignon (28), et un second embrayage (188) de rattrapage est installé entre la section (64) réductrice, entraînée par un moteur (68), et un arbre (66) d'asservissement monté dans le logement (86) de la manivelle.

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