The invention relates to an actuation device (10) of the control cable of a bicycle gearshift comprising a casing (11), configured for fixing to bicycle handlebars, a control pin (12) mounted rotatably in the casing (11) about a rotation axis (X), a control lever (102) mobile with respect to the casing (11) and active on a descent member (15) coaxial and fixedly connected to the control pin (12), a cable-winding bush (13) mounted coaxially to, and rotatable with, the control pin (12) in a first angular direction (A) and in a second angular direction (B) opposite the first, an indexer (14) mounted coaxially to the control pin (12) and configured to define a plurality of stable angular positions, spaced apart by respective indexing angles, for the cable-winding bush (13). Elastic members (24) are configured to deform and store elastic energy during a rotation of the control pin (12) in the second angular direction (B), the elastic members (24) being configured to release the elastic energy stored at the end of the rotation of the control pin (12) and being configured to cause a stroke recovery rotation of the control pin (12) in the first angular direction (A), during the release of the elastic energy stored, the stroke recovery rotation having an angular size smaller than the indexing angle that separates two adjacent stable positions of the cable-winding bush (13).
ACTUATION DEVICE OF THE CONTROL CABLE OF A BICYCLE DERAILLEUR
BETÄTIGUNGSVORRICHTUNG DES SEILZUGS EINER FAHRRADKETTENSCHALTUNG
DISPOSITIF D'ACTIONNEMENT DU CÂBLE DE COMMANDE D'UN DÉRAILLEUR DE BICYCLETTE
2018-06-06
Patent
Electronic Resource
English
MECHANICAL ACTUATION DEVICE FOR ACTUATING CONTROL CABLE OF BICYCLE DERAILLEUR
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