| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor driven derailleur for a bicycle that further safeguards a cyclist in the case of failure/anomaly of the electronic control board of a gear motor unit or of a relative software.SOLUTION: A motor driven derailleur 1 comprises: a support body 102; a chain guide 103; a pair of connecting rods 104, 105; a gear motor unit 10 housed in the support body 102; and motion transmission means 14, 104a between the gear motor unit 10 and the connecting rod 104. The motion transmission means 14, 104a are housed in an inner chamber 102a of the support body 102. The inner chamber 102a comprises at least one adjustable end stop elements 20, 220 that prevent the rotation of an output shaft 13 beyond a predetermined rotation angle, in at least one of the two directions of rotation of the output shaft 13. |
