| 摘要 |
PROBLEM TO BE SOLVED: To provide the locking machine of a front frame in a game machine which is effective to prevent an illegal behavior by opening the front frame when the game machine and a game machine island are not operated. SOLUTION: A coil spring 47 made of a shape memory alloy and a bias coil spring 48 are mounted on a pin 45 so as to press each other. A bias-type actuator 41 wherein the pin 45 is provided to be advanced and retracted by the temperature change of the coil spring 47 made of the shape memory alloy is fitted to the inner side of an outer frame 1. An engaging member 51 capable of being engaged with the pin 45 is provided to the rear surface side of a front frame 5. By rising of the atmospheric temperature by operation of the game machine and the game machine island, the pin 45 of the actuator 41 is retraced to disengage an engaging state with the engaging member 51, thereby attaining the opening operation of the front frame 5 by the key operation of a locking device 30. By lowering of the atmospheric temperature by non-operation of the game machine and the game machine island, the pin 45 is advanced to be engaged with the engaging member 51, thereby holding the closed state of the front frame. COPYRIGHT: (C)2010,JPO&INPIT
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