| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine which enables the game board to be detachably mounted on a middle frame simply and accurately. SOLUTION: When the game board 2 is mounted on the middle frame 13 of a pachinko game machine, upper and lower retaining pieces 35 and 36 provided on the left part of the game board 2 are retained on upper and lower receptacles 30 and 31 of the middle frame 13. With the left part of the game board 2 pivoted by the middle frame 13, the game board 2 is closed onto the middle frame 13 to keep upper and lower lock parts 37 and 38 installed on the right part of the game board 2 fitted onto the upper and lower lock bodies 32 and 33 of the middle frame 13. When the game board 2 is mounted on the middle frame 13, resilient pieces 42a-42d provided on the middle frame 13 press the game board 2 forward. COPYRIGHT: (C)2007,JPO&INPIT
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