| 摘要 |
A transmission device for a gym bicycle has a base with three axles parallel to each other. A first driving wheel is mounted on the first axle and rotatable along with the first axle. A driven wheel is rotatably mounted on the second axle by a first bearing and connected with the first driving wheel by a first belt. A second driving wheel is rotatably mounted on the second axle by another first bearing and mounted on the driven wheel by a one-direction bearing. A flywheel rotatably is mounted on the third axle by two second bearings and connected with the second driving wheel by a second belt. Whereby, the transmission device can be adjusted before it is assembled on a frame.
|
