| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the updating of a ball polishing surface to be in contact with game balls and the exchange of a ball polishing member without complicating the structure of a ball polishing device for polishing the game balls, in an enclosed ball type game machine in which the game balls are circulated and used by recovering the game balls hit from a hitting device and supplying the recovered game balls to the hitting device again. SOLUTION: The ball polishing device 250 has a winding reel 262 with a winding part 266 for winding the ball polishing member 261. A slit 266b is formed at the winding part 266, at least one of flange parts 267 and 268 at both ends is made detachable, and a clamping member 268a to be inserted to the slit 266b for clamping the end part of the ball polishing member 261 is formed at the flange part 268. which the clamping member 268a clamps the end part of the ball polishing member 261 is provided. COPYRIGHT: (C)2009,JPO&INPIT
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