| 摘要 |
<p>An internal bicycle shifter hub 10 in which the gear ratio can be switched by centrifugal force comprises a hub axle 21, a driver 22, a slave 23, a planetary gear mechanism 24, a clutch mechanism 25, a clutch-switching mechanism 26, and a fixing bolt 66. The slave has a hub shell 60 capable of rotating about the hub axle. The planetary gear mechanism changes the speed of rotation of the driver and transmits the result to the slave. The clutch mechanism links or disengages the driver and the slave. The clutch-switching mechanism has swinging weight members 77, a control member capable of moving in a circle in response to the swinging of the weight members, and a power transmitting body 61 that carries the weight members and the control member, that can rotate about the hub axle, and that is linked to the driver via the clutch mechanism. The frame body is disposed coaxially with the hub axle and is designed to link the power transmitting body and the hub shell. <IMAGE></p> |
