| 摘要 |
<p>PURPOSE:To precisely detect a mode selecting position and to improve the reliability of a selecting action by constituting a mode selecting position detection means so that a reference time is successively corrected according to the change of the rotating speed of a motor. CONSTITUTION:A mode is switched by the action of a PAD cam 24 which is rotated with the aid of taking the motor 25 as a driving source. Simultaneously, a solenoid lever 31 which can vary the positional relation between the PAD cam 24 and itself at the mode selecting position on the way of the rotation of the PAD cam 24 and a solenoid 33 which displaces the lever 31 are provided. Then, the change of the rotating speed of the motor 25 is detected and a time which is previously set is corrected based on the detected value. When the time elapsed after the PAD cam 24 is started attains the corrected time, a mode selecting position detection signal is inputted and a signal based on a play mode switching command is inputted. Thus, the mode selecting position is always and precisely detected and the mode selecting action is surely executed.</p> |
