| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a game machine, in which opening/closing action for an inner frame is smoothly performed, opening/closing action for the inner frame can be repeatedly performed without breaking it, cost on components is restricted, and the number of assembling man-hours for the game machine is almost similar to that of conventional devices. Ž<P>SOLUTION: The device includes an outer frame formed like a rectangular frame, and the inner frame 3 disposed on a front surface of the outer frame 1, and attached to a shaft to be openable/closable through hinge mechanisms 4a and 4b provided at an upper and a lower parts on one side. The lower hinge mechanism 4b comprises a lower fixed hinge member 22 on the outer frame, and a lower movable hinge member 23 on the inner frame overlapped with its upper surface to be attached to the shaft in a rotatable way. A rotatable support ball 32 is disposed on the lower fixed hinge member 22 on the outer frame to project from its upper surface by specific size at an upper end. When making opening/closing action for the inner frame 3 to the outer frame 1, the support ball 32 abuts on a lower surface of the lower movable hinge member 24 on the inner frame to push the inner frame 3 upward. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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