| 摘要 |
A ratchet mechanism for a bicycle hub includes a first hub member (20, 20') and a second hub member (7, 75), wherein the first hub member (20, 20') and the second hub member (7, 75) are rotatable relative to each other. A pawl (30, 30') is supported by the first hub member (20, 20'), a ratchet tooth (11, 11') is supported by the second hub member (7, 75), and a biasing mechanism (23, 95) is provided for biasing the pawl (30, 30') toward the ratchet tooth (11, 11'). A pawl control mechanism (60, 100) is responsive to relative rotation of the first hub member (20, 20') and the second hub member (7, 75) for allowing the pawl (30, 30') to contact the ratchet (11, 11') when the first hub member (20, 20') and the second hub member (7, 75) rotate relative to each other in one direction and for preventing the pawl (30, 30') from contacting the ratchet tooth (11, 11') when the first hub member (20, 20') and the second hub member (7, 75) rotate relative to each other in an opposite direction. <IMAGE> |
