Rotatable grip actuator
AssigneeSRAM Deutschland GmbH
InventorMartin Weiss
Life of this patent
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Abstract
The invention relates to a bicycle twist-grip shifter, which is connectable to a fixed handgrip and is mountable as a structural unit on a handlebar. In this way the fixed handgrip is securely fixed on the handlebar. Moreover, the individual components have an advantageous size for production in an injection moulding process. The twist-grip shifter gives the operator a precise operation by avoiding disruptive frictional effects of the rotatable handgrip part on the mounting tube, for which purpose ball bearings are used for bearing the take-up spool, and a metallic positioning ring is used in the positioning mechanism.
Claims11
A twist-grip shifter for actuation of bicycle gear units by pulling and releasing a cable, comprising:
- a shifter housing configured to be received on a handlebar,
- a central mounting tube disposed inwardly of the shifter housing, the central mounting tube including a proximal end and a distal end, wherein the proximal end of the central mounting tube is fixedly connected to the shifter housing,
- a rotatable handgrip rotatably disposed about the central mounting tube and adjacent the shifter housing,
- a take-up spool rotatable with the rotatable handgrip for pulling and releasing the cable,
- a fixed handgrip including a fixed grip tube configured to be nonrotatably received on the handlebar, and
- a connector releasably connecting the distal end of the central mounting tube to the fixed grip tube.
Dependencies are inferred from the claim text.