| 摘要 |
PROBLEM TO BE SOLVED: To provide a small and lightweight bicycle speed changer shift device operable by small force and inexpensive in a production cost. SOLUTION: This bicycle speed changer shift device is provided with a motor, a winding member for pulling and releasing a speed changer control member and a one-way clutch shift control device being arranged between the motor and the winding member and holding the winding member in plural positions. |
