| 摘要 |
PROBLEM TO BE SOLVED: To provide an auxiliary wheel gear for child bicycle practice that improves practice effect as the auxiliary wheel gear that does not always contact the ground during while tilted, and can continue the practice by raising the tilted bicycle. SOLUTION: An eccentric wheel 1 of which an axle 2 is shifted from the center is mounted to the auxiliary wheel gear. When the bicycle tilts and the wheel of the auxiliary wheel gear contacts with the ground, the diameter of the eccentric wheel increases with rotation, and the bicycle is raised accordingly. The wheel 2 is not perfectly circular but is deformed in an asymmetric shape with respect to the center, and does not always contact with the ground when it tilts. This configuration solves a problem wherein a perfectly circular wheel, in the auxiliary wheel gear for the bicycle practice by the child, always contacts with the ground when it tilts to spoil bicycle practice. COPYRIGHT: (C)2004,JPO
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