| 摘要 |
PROBLEM TO BE SOLVED: To reduce noises and to improve workability by reducing the number of times of a ball colliding against a guide member or a rail by regulating a playing flap of the ball at the time of it transferring from a straight track on to a curved track of a circuit. SOLUTION: The number of times of a ball colliding against each of guide members and a rail by expanding the curved track inside guide member 2 corresponding to a part, for example, to transfer from a straight track on to a curved track outside, reducing a playing flap Db of a ball 3 at a circuit inlet of a phase b from transfer smaller than a playing flap Da of the ball 3 in a circuit to be a no-load state after a phase a from transfer and consequently by reducing a play of the ball at a circuit gateway. Additionally, it is possible toreduce the playing flap of the ball at the circuit gateway even by setting a central axis of the curved track to be slipped out of a central axis of the straight track or by guiding the ball at a transfer part by interposing an intermediate inside guide member between the straight track inside guide member and the curved track outside guide member.
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