| 摘要 |
A speed changing device for a bicycle comprises a lever unit and a winding unit. The lever unit has a control lever, a first winding body carrying a first control wire connected to a front or rear derailleur, and an engagement for selectively transmitting rotation of the control lever to the first winding body. The winding unit has a second winding body having an engaging portion engageable with the engaging means and carrying a second control wire connected to the other derailleur, and is detachably mounted to the lever unit by means of a coupling.
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