| 摘要 |
<p>This invention provides a free wheel hub including a hub housing having a first flange and a second flange, a shaft rotatably provided in said hub housing, a first bearing seat and a first bearing fixed on the inward side of said first flange, a second bearing seat and a second bearing provided on the inward side of said second flange, a first and a second ball-raceway bodies provided respectively between said shaft and said first or second bearing for allowing said shaft to freely rotate in the housing. Said two ball-raceway bodies are fixedly provided on said shaft for rotating therewith. A plural of ratchets are provided on the inwards side of said second bearing seat and at least one pawl provided at the intermediate ring-like portion of said second ball-raceway body and engaged with the ratchet(s) in said second bearing seat for driving said hub while the shaft rotates in a certain direction.</p> |
