| 摘要 |
A hub assembly for a bicycle includes a hub body provided with a mounting portion, a freewheel slidably mounted on the mounting portion of the hub body, and at least one retainer mounted on the mounting portion of the hub body and rested on the freewheel to retain the freewheel on the mounting portion of the hub body to prevent the freewheel from being detached from the mounting portion of the hub body. Thus, the freewheel is slidable on the mounting portion of the hub body to change the position of the freewheel relative to the chainwheel, so that the freewheel is in line with the chainwheel, and the chain is perpendicular to the hub body constantly without incurring deflection.
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