Bicycle shifter
AssigneeSRAM Deutschland GmbH
InventorMartin Weiss
Life of this patent
Estimating the term…
Abstract
A shifter designed to actuate a gear change device of a bicycle by pulling and releasing a control cable. The shifter includes a base plate mountable to the bicycle, a cable spool and cable-pull and cable-release lever assemblies. The cable spool is rotated in a cable-pull direction to wind the control cable thereon and in a cable-release direction to unwind the control cable therefrom. The cable-pull and cable-release lever assemblies are operatively connected to the cable spool to rotate the cable spool in the cable-pull and cable-release directions, respectively. The cable-pull lever assembly includes a cable-pull lever rotated about a first axis and at least two winding pawls received by and rotating with the cable-pull lever about the first axis to transmit rotational movement of the cable-pull lever to the cable spool.
Claims8
A shifter for operating a gear changing device of a bicycle, comprising:
- a shifter housing having a cable spool rotatably supported on a first axis;
- a control plate rotationally fixed to the cable spool, the control plate having transport teeth;
- a cable-pull lever assembly operatively connected to the cable spool to rotate the cable spool in the cable-pull direction, the cable-pull lever assembly including a cable-pull lever and a winding pawl rotatably disposed on and rotating with the cable-pull lever about the first axis, the winding pawl engaging the transport teeth to transmit cable-pull lever rotation to the cable spool;
- a cable-release lever assembly operatively connected to the cable spool to rotate the cable spool in the cable-release direction, the cable-release lever assembly including a cable-release lever rotatably supported about a second axis of rotation, the second axis skewed relative to the first axis;
- a shift plate rotatably supported about the first axis and contactingly disengaging the winding pawl from the transport teeth when the cable-release lever is rotated;
- and
- a coupling element connecting the shift plate to the cable-release lever.
Dependencies are inferred from the claim text.