| 摘要 |
<p>An internal bicycle shifter hub 10 is a hub capable of switching among gear ratios on the basis of centrifugal force, comprising a hub axle 21, a driver 22, a slave 23, a planetary gear mechanism 24, a clutch mechanism 25, and a clutch-switching mechanism 26. The slave has a hub shell 60 capable of rotating about the hub axle. The planetary gear mechanism is disposed between the driver and the slave and is designed to change the speed of rotation of the driver and to transmit the result to the slave. The clutch mechanism links or disengages the driver and the slave. The clutch-switching mechanism has weight members 77 that swing about one end thereof, a control plate 75 capable of moving in a circle between a linked position in which the clutch mechanism is in a linked state and a disengaged position in which the mechanism is in a disengaged state, and links 78 for rotating the control member in response to the movement of the other end of the rocking weight members. <IMAGE></p> |
