| 摘要 |
PROBLEM TO BE SOLVED: To provide a Pachinko game machine including a winning port device shortening a switching time from the open position to the closed position of an opening/closing member and preventing a ball bite state with a game ball stuck between the opening/closing member and the upper edge of a winning port. SOLUTION: A big winning port device 13 includes the opening/closing member 20 and a driving means 21. The driving means 21 has a solenoid actuator 29 driving the opening/closing member 20 in an opening direction, and first and second spring members 34, 45 driving the opening/closing member 20 in a closing direction and externally fitted in parallel to an output shaft 29a. In the early and middle periods of return operation from the open position to the closed position of the opening/closing member 20, the opening/closing member 20 is energized by a strong elastic energizing force consisting of the elastic energizing force of the first spring member 34 and the elastic energizing force of the second spring member 35, and in the final period of return operation, the opening/closing member 20 is energized by the weak elastic energizing force of the first spring member 34. COPYRIGHT: (C)2011,JPO&INPIT
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