| 摘要 |
PROBLEM TO BE SOLVED: To provide a practical game machine capable of extremely effectively preventing the fraudulent exchange and fraudulent alteration of a control element by sealing the upper and lower covers of a controller by a sealing screw which demonstrates an extremely highly accurate sealing function. SOLUTION: For the controller 1 of a Pachinko game machine, the upper cover 6 and the lower cover 5 are put together by threadingly engaging one of the right and left of respective screw holding parts 9, 9, ..., provided at the upper cover 6 so as to be easily cut, to the screw engaging bodies 20, 20 of the lower cover 5 by the sealing screw 13. A rotation transmitting mechanism (one-way clutch mechanism) is utilized by the sealing screw 13, the rotary force is transmitted to a male thread part 61 and the male thread part is rotated when a rotary operation member is rotated clockwise but the male thread part is not rotated when the rotary operation member is rotated counterclockwise. COPYRIGHT: (C)2010,JPO&INPIT
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