| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine capable of enhancing security by facilitating detection of a fraudulent act. SOLUTION: A lock shaft 13b of a lock lever 3 is pressed by a coil spring 14 against a tooth surface of a groove 11b of a hinge member 10 before the inner frame 3 closed to the outer frame 2 is opened by a certain width (Fig.3 (a)). When an attempt is made to close the inner frame 3, the opposing teeth are engaged to control move of the inner frame in the direction of closing through the lock lever 13. When the inner frame is opened by a certain width and the direction of biasing the lock lever 13 is turned the other way by the coil spring 14, the teeth are disengaged and the move of the inner frame 3 in the direction of closing is released. Even when an attempt is made to open the inner frame 3 a little for a fraudlent purpose, the inner frame can always be once opened wide and facilitates to detect the fraudulent act. COPYRIGHT: (C)2008,JPO&INPIT
|
