| 摘要 |
PURPOSE:To speed up the selection of types without any limitation to the turning direction of type selection and the magnitude of turning angle by effectively working a stopper for setting home position only when setting home position. CONSTITUTION:A holder 7 is fixed to the rotary shaft 5 of a stepping motor 3, and an arm 8 is provided on the tip of the holder 7. The arm 8 and the shaft 5 are set at a specific position in turning direction which is related to the exciting phase of the motor 3. A stopper solenoid 9 is provided at a fixed position related to home position in the outside of the motor 3. The solenoid 9 is electrically energized to move a plunger 10 to arrow A side and the arm 8 is contacted with the stopper shaft 10a. |
