| 摘要 |
PROBLEM TO BE SOLVED: To provide an upper rotatably supporting structure of the front frame in a pachinko machine, that enables easily and safely attaching and detaching the front frame to and from the exterior frame, is simple in structure and can be easily manufactured at a low cost. SOLUTION: A projection 8 projecting forward is provided in an upper metal fixture 3 of an exterior frame 1, a slot 9 to insert an upper hinge pin 4 of the front frame 2 is provided in the projection 8, a notched opening 11 to introduce the upper hinge pin 4 into the slot 9 with the front frame 2 opened is provided nearly in the middle position of one side of the slot 9, the tip of the slot 9 is formed as a bearing portion 10 of the upper hinge pin 4, the part from the notched opening 11 to the slot 9 is formed as a recess 12 into which more than the radius of the hinge pin 4 can be fitted.
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