| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a game machine which can be constituted inexpensively and can extremely effectively prevent a fraudulent replacement and fraudulent alteration of a control element. <P>SOLUTION: In a controller 1 of a Pachinko machine, screw-holding parts 9a, 9b, ..., are provided on the right and left of an upper cover 6 so as to be easily cut, and the upper cover 6 and a lower cover 5 are put together by threadingly engaging the upper left and lower right screw-holding parts 9a, 9a to screw engaging bodies 20, 20 by one-way clutch type sealing screws 13 provided with a rotation transmission mechanism. Meanwhile, in the screw-holding parts 9b, 9b, ..., non one-way clutch type sealing screws 14 are held. In the sealing screws 13, the rotary force is transmitted to a male threaded part 61 and the male threaded part is rotated only when a rotary operation member is rotated clockwise. Meanwhile, the sealing screws 14 are rotated only when pressing a flat-blade screwdriver to a vertical surface of a screw projection and rotating it in the right direction. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
