| 摘要 |
PROBLEM TO BE SOLVED: To reduce the height of a ball feeder by shortening the streaming distance of game balls in the ball feeder without causing jamming with balls. SOLUTION: In a ball tank 3, a bottom plate 31 is inclined downward to the right so that its height is set smaller to the left, namely, to the upstream side and larger to the downstream side. The game balls B move to the right by their dead load and a ball outflow port 32 is made to communicate with a step part 40 of a tank rail 4. The step part 40 is formed at the left end part (rear end part) in the downstream side portion of the tank rail 4 and disposed at the upper center part with respect to a mechanism board. The length L<SB>6</SB>of the step part 40 is 5 to 20% of the length L<SB>3</SB>of the mechanism board 13 and the position of the step part 40 is less than the range of the length M, which is 50% of the length L<SB>3</SB>of the mechanism board, preferably 70%. It is especially preferable that the length is within the range excepting the length at both end parts of the mechanism board equivalent to 80% of the length. The height H<SB>9</SB>of the step part 40 is 1-2 times the diameter of the game ball. COPYRIGHT: (C)2007,JPO&INPIT
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