Cable retraction mechanism for trigger shifters
AssigneeSRAM Deutschland GmbH
InventorsRobert Wessel, Martin Weiss
Life of this patent
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Abstract
A bicycle shifter having a housing mountable to a handlebar, a takeup mechanism for pulling a shift cable and a release mechanism for releasing the shift cable. The takeup mechanism includes a takeup tooth segment, a takeup pawl and an actuation element. The release mechanism includes retaining and locking tooth segments, retaining and locking pawls and a release element. The takeup, retaining and locking tooth segments are arranged on one disk element.
Claims19
A shifter mountable to a handlebar of a bicycle, the shifter actuating a bicycle transmission, a shift cable connecting the shifter to the bicycle transmission, the shifter comprising:
- a housing mountable to the handlebar of the bicycle;
- a cable spool for winding and unwinding the shift cable thereon;
- a takeup mechanism including a takeup tooth segment, a takeup pawl and an actuation element;
- and
- a release mechanism having retaining and locking tooth segments, a retention pawl and a locking pawl for retaining and releasing the shift cable and a release element,
- wherein the takeup, retaining and locking tooth segments are arranged on a disk element,
- the tooth segments arranged coaxially on the disk element, at least one tooth segment being arranged on a periphery of the disk element and at least one tooth segment arranged inside of the at least one tooth segment arranged on said periphery of the disk element.
A shifter for a bicycle comprising:
- a housing mountable to a handlebar of the bicycle;
- a cable spool for winding and unwinding a shift cable thereon;
- a release mechanism for retaining and releasing the shift cable;
- a takeup mechanism for winding the shift cable about the cable spool, the takeup mechanism including a takeup tooth segment, a takeup pawl and an actuation element, the takeup pawl having a bearing region and an engagement region offset from the bearing region, the takeup pawl rotatable about a takeup pawl axis.
A shifter of a bicycle comprising:
- a housing mountable to a handlebar of the bicycle;
- a cable spool for winding and unwinding a shift cable thereon;
- a release mechanism for retaining and releasing the shift cable;
- and
- a takeup mechanism for winding the shift cable about the cable spool, the takeup mechanism including a takeup tooth segment, a takeup pawl and an actuation element, the takeup pawl having a bearing region and an engagement region arranged opposite one another, the bearing region extending substantially perpendicular to a shaft of the cable spool, the takeup pawl rotatable about a takeup pawl axis.
Dependencies are inferred from the claim text.