| 摘要 |
PROBLEM TO BE SOLVED: To provide a bicycle without a spoke in a wheel, which is capable of transmitting power to a driving wheel more reliably. SOLUTION: A driving body 51 to which a driving force is added by a pedal 513a, and a driven body 53 are connected by a chain 52a, and the external tooth 530 of the driven body 53 is engaged with the internal tooth provided in the inner circumference of the driving wheel 3. The driving wheel 3 is supported in a cover body 6 rotatably relative to a body 4 by a vertical roller 71a and a lateral roller 72a, and is driven by the rotation of the driven body 53. COPYRIGHT: (C)2010,JPO&INPIT
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