| 摘要 |
<p>A hub transmission for a bicycle is provided with a drive member (2) and a hub body (3) rotatably mounted on a hub axle (1). A planetary gear mechanism (7, 70) is interposed between the drive member (2) and hub body (3) to transmit torque from the drive member (2) to the hub body (3) through multiple rotational force transmission paths. A change speed control mechanism (E) comprises at least one clutch for selecting the rotational force transmission path. A ring gear guide ring (30, 130) is arranged between the ring gear (7) of the planetary gear mechanism and the hub body (3), which stabilizes the smooth running of the ring gear (7). <IMAGE></p> |
