The invention relates to a mechanical actuation device (10) for actuating the control cable of a gearshift of a bicycle comprising a fixed casing (11), a control pin (12) rotatably mounted in the casing (11) about a rotation axis (X), a cable-winding bush (13) mounted coaxially and rotatable with the control pin (12) in a first angular direction (A) and in a second angular direction (B) opposite to the first, a ball-carrying bush (15) mounted in the casing (11) in a rotary manner about the rotation axis (X), rotating as a unit with the cable-winding bush (13) and equipped with at least one slider (16, 17). An indexing bush (20) is rotatable with respect to the control pin (12) with a rotational play with respect to the casing (11), the indexing bush (20) being provided with a plurality of stop positions (22) engageable in sequence by the slider (16, 17) during a relative rotation between the ball-carrying bush (15) and the indexing bush (20), each stop position (22) defining a stable angular position for the cable-winding bush (13). A pointer (30) is switchable between an active position in which it interacts with the indexing bush (20) to limit the angular play thereof with respect to the casing (11) and a passive position in which it does not interact with the indexing bush (20) and does not limit the angular p between the indexing bush (20) and the casing (11).
MECHANICAL ACTUATION DEVICE FOR ACTUATING THE CONTROL CABLE OF A BICYCLE DERAILLEUR
MECHANISCHE BETÄTIGUNGSVORRICHTUNG ZUR BETÄTIGUNG DES SEILZUGS EINER FAHRRADSCHALTUNG
DISPOSITIF D'ACTIONNEMENT MÉCANIQUE DU CÂBLE DE COMMANDE D'UN DÉRAILLEUR DE BICYCLETTE
18.11.2020
Patent
Elektronische Ressource
Englisch
MECHANICAL ACTUATION DEVICE FOR ACTUATING CONTROL CABLE OF BICYCLE DERAILLEUR
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