Front derailleur for a bicycle
OwnerChing-Huan Tseng, Yu-Jen Chieninventors
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Abstract
The present invention discloses a front derailleur for a bicycle to shift a chain via a chain guide between at least two sprockets which are attached on a frame of the bicycle. The front derailleur includes a wire extending through a stopper which is attached on the frame of the bicycle for transmitting a tension. An actuating link is connected to the wire in response to the tension for driving the chain guide to shift the chain between the sprockets. A wire guide is mounted on a seat tube of the frame and connected with the wire between the stopper and the actuating link for straightening the wire substantially parallel to the seat tube, thereby reducing a friction between the wire and the stopper.
Claims8
A front derailleur for a bicycle to shift a chain via a chain guide between at least two sprockets which are attached on a frame of the bicycle, the front derailleur comprising:
- a wire extending through a stopper which is attached on the frame of the bicycle for transmitting a tension;
- an actuating link connected to the wire in response to the tension for driving the chain guide to shift the chain between the sprockets;
- and
- a wire guide mounted on a seat tube of the frame and connected with the wire between the stopper and the actuating link for straightening the wire substantially parallel to the seat tube, the stopper being lower than the wire guide for employing a design of down-pulling the wire to drive the actuating link, thereby reducing a friction between the wire and the stopper.
Dependencies are inferred from the claim text.