| 摘要 |
PROBLEM TO BE SOLVED: To prevent a twist and a bend of a ball polishing member in an enclosed ball type game machine which circulates and uses game balls by recovering the game balls shot from a shooting device and by supplying the recovered game balls to the shooting device again. SOLUTION: The ball polishing device 250 is equipped with a bend prevention tool 300 which is provided between a ball polishing part 291a for making the ball polishing member 261 abut on the game ball and a holding part 256a for holding a new ball polishing member 261 for preventing the ball polishing member 261 from bending. In addition, the bend prevention tool 300 is equipped with a regulating part 302 for regulating a deriving direction of the ball polishing member 261 so that the ball polishing member 261 is folded back between the holding part 256a and the ball polishing part 291a. In the bend preventing means 300, a contact part 304 with the ball polishing member 261 in the regulating part 302 is formed into a curved shape in which the center is protruded to a side of the ball polishing member 261 along a width direction of the ball polishing member 261. COPYRIGHT: (C)2011,JPO&INPIT
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