| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a game machine including a start input means which a player can easily operate without hitting when starting a game, and which suppresses a fact that it becomes slow to detect and react or breaking even when operated violently. Ž<P>SOLUTION: A dial-type start switch 6 includes: an operation cylinder part 60 disposed, slightly projecting from the opening 2b of a front panel 2a; and a start switch 6S outputting a rotation detection signal to a main CPU 31. A frame 63 supporting the operation cylinder part 60 is fixed to the front panel 2a. A pair of bearing arms 64 and 64 supporting a rotary shaft 62 horizontally are provided projecting from the frame 63. On the outer peripheral surface of the operation cylinder part 60, a groove thread 61 where contact friction force with fingers is enhanced is provided. The start switch 6S includes a rotation detection disk 65 having slits 65a with a predetermined pitch; and a transparent photosensor 66 which detects the rotation of the rotation detection disk 65. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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