| 摘要 |
A speed-changing controller adapted to connect the derailleur of a bicycle via a gear cable for controlling said derailleur, the controller comprises a fastening base, a driven member, a retaining member and a sleeve. The driven member and the sleeve are rotatably and respectively fitted on a shaft tube of said fastening base. The retaining member is fastened on said driven member and is provided with a protruding retaining portion which can be engaged with one of positioning portions of said fastening base at the time when said driven member is driven by said sleeve to rotate to a determined position so as to pull/loose the gear cable to control the derailleur for completing the speed-changing motion of the bicycle.
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