| 摘要 |
A sensor device for detecting for detecting the operating position of a gear-change system for bicycles comprises a shell positioned at any point along the flexible control cable of a bicycle derailleur, between the derailleur and the control device. The shell is in a fixed position while the flexible control cable, which transverses it, is movable. A reference member is movable, together with the cable, inside the shell. The device comprises a detector for detecting the position of the reference member with respect to the shell, which consist of a potentiometric sensor comprising a movable contact carried by the reference member and an electrically conductive channel carried inside the shell of the sensor, on which the movable contact is fitted in such a way that it can slide.
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