| 摘要 |
<p>The front ends of the levers (7,8) are pivotably secured to the bars (2,3) via pivot pins (73), while the rear ends are slidably engaged on tracks (41,42). The ends of the links (5,6) are respectively and rotatably secured to the cranks (14,15) and slides slidably received in the bars. An adjusting mechanism adjusts the slides relative to the bars to adjust the movement path of the foot supports (72,82). The cranks are rotatably secured to the rear section of a base (1) at a pivot shaft. The bars are pivotably secured to the upper section of a post (11). A pulley (23) is attached to the bottom end of each bar. The tracks are engaged and movably supported on the pulleys, such that the corresponding ends of the tracks are rotatably secured to the free ends of the cranks.</p> |
