| 摘要 |
<p>The lever-arm transmission has pedals (9), which when pressed downwards, transmit force to the lever arm (8), bearing (11), cable (13), rollers (14, 15, 17, 21, 22, 23, 24), thus pulling the frame (10) downwards. The bearings (38, 39, 42) are pulled down by other cables (16), transmitting the force to the bearings of the gear crowns (28, 29) for the endless chain (30) to drive the rear wheel of the bicycle.</p> |
