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.
For the controller 1 of a Pachinko game machine, the upper cover 6 and the lower cover 5 are put together by threadingly engaging each of the right and left of respective screw-holding parts 9, 9, ..., provided at the upper cover 6 to be easily cut, to screw engaging bodies 20, 20 of the lower cover 5 by the sealing screw 13. Further, a 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.
HASEGAWA KAZUMASA
| JPH11444A | 1999-01-06 | |||
| JP2000145745A | 2000-05-26 | |||
| JPH06288412A | 1994-10-11 |
Kyoichi Ueda
Keiya Inoue
Kiyotaka Sonoda
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