| 摘要 |
PROBLEM TO BE SOLVED: To provide a Pachinko ball shooting apparatus for a Pachinko machine with which the ball can be shot to a desired position of a game panel by finely adjusting a shooting speed with a simple structure. SOLUTION: Between the rotating lever 5 of an operation handle and a variable resistor 2, a drive gear 6 and a following gear 7 which adjust the speed of the Pachinko ball to two stages of a first fast changing area and a second stable changing area with the rotation of the rotating lever 5 are interposed, and the speed of the Pachinko ball into the game panel is matched with the second stable changing area. In this case, the drive gear 6 has a noncircular gear part rotating with a rotation angleθand a pitch curve radius rθ, and the following gear 7 has a noncircular gear part rotating with a rotation angleϕand a pitch curve radius rϕ. rθ+rϕ=L (L is a distance between gear shafts) is satisfied, and an angular speed ratio is exprssed by dϕ/dθ=-rϕ/rθ. In both of the gears 6 and 7, a first area in which the angular speed ratio is large and a second area in which the angular speed ratio is small are provided. COPYRIGHT: (C)2005,JPO&NCIPI
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