| 摘要 |
A rider-propelled wheeled vehicle, such as a bicycle, can be propelled both by leg movement, through pedals (18) driving a rear wheel (14), and through arm movement by moving the handlebars (20) in a rowing-like motion. The handlebars (20) are mounted on a parallelogram linkage (22) with horizontal pivot axes (26, 28) so that they maintain a substantially constant orientation throughout a vertical arc of motion, are arranged to operate through a drive mechanism to transmit drive to a driven wheel, and are connected to the steerable front wheel (12) through an elongate linkage of substantially fixed length which transmits steering torque along its length. |
