| 摘要 |
PROBLEM TO BE SOLVED: To suppress sound generated when a driving body and a ring gear rotate at different speed. SOLUTION: The hub assembly of the present invention includes a hub axle 20, the driving body 46, a hub shell 22, a power transmission assembly 14, a pawl 18, and a pawl retracting mechanism 16. The driving body 46 and the hub shell 22 are rotatably supported by the hub axle 20. The power transmission assembly 14 is disposed between the driving body 46 and the hub shell 22 for transmitting rotational power from the driving body 46 to the hub shell 22 through a first power transmission path and a second power transmission path. The pawl 18 transfers the rotational power between the driving body 46 and the hub shell 22 when the rotational power is transferred along the first power transmission path. The pawl retracting mechanism 16 restricts movement of the pawl 18 when torque is transmitted along the second power transmission path. COPYRIGHT: (C)2008,JPO&INPIT
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