| 摘要 |
A linear drive regular upright cycle (10) having linearly reciprocating pedals (30a,b) located between front wheel (14) and rear wheel (16) in order to achieve a more popular linear drive bicycle design, in upright bicycle with regular handling characteristics. Top extremities of a pair of pedal-sliders (24a,b) are journalled for independent up and down type oscillation in a pedal-slider bracket (26) which is connected to a frame (12) through a seat tube (28). Linearly reciprocating pedals (30a,b) are attached to lower extremities of pedal-sliders (24a,b) and are rotatably linked to crank (32) through a pair of straight links (36a,b); so as to transfer power from pedals (30a,b) to crank (32). Links especially are super short and straight whereby saving weight, while other dimensions are mostly halved. Axis of reciprocating movement of pedal-sliders (24a,b) crosses to front of axis of crank (32) giving it an inherent tendency to rotate forward whereby eliminating dead-spot.
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