Actuation method and device for a control cable for a bicycle gearshift

A method for carrying out gearshifting in a bicycle gearshift through an actuation device (100; 200; 300; 400) is described that comprises a mobile mechanical member (104; 204) to control the gearshift, wherein every gearshifting operation corresponds to a movement of predetermined amount of the mob...

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Bibliographische Detailangaben
1. Verfasser:	DAL PRA GIUSEPPE,DE PRETTO ANDREA
Format:	Patent
Sprache:	eng
Schlagworte:	CYCLES LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS PERFORMING OPERATIONS POWERED PROPULSION OF SLEDGES OR RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES TRANSPORTING
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Beschreibung
Zusammenfassung:	A method for carrying out gearshifting in a bicycle gearshift through an actuation device (100; 200; 300; 400) is described that comprises a mobile mechanical member (104; 204) to control the gearshift, wherein every gearshifting operation corresponds to a movement of predetermined amount of the mobile member (104; 204), characterised in that it comprises the following steps: - active initial movement of the mobile member (104; 204) for a first amount (²1) equal to only a portion of the amount (²1+²2) of the movement corresponding to gearshifting; - automatic final movement of the mobile member (104; 204) for a second amount (²2) equal to the remaining portion of the amount (²1+²2) of the movement corresponding to gearshifting. Devices (100; 200; 300; 400) capable of implementing such a method are also described.