| 摘要 |
A step exerciser including a main shaft supported on a rear transverse bar and a horizontally disposed front barrel, an axle mounted in the horizontally disposed front barrel, two oscillating bars turned about the axle at two opposite sides of the main shaft, two actuating bars having a respective front end respectively pivoted to the oscillating bars and a respective rear end, two front links and two rear links respectively pivoted together and pivotably coupled between the oscillating bars and the rear ends of the actuating bars, a driving wheel revolvably supported in a rear wheel slot in the main shaft, two cranks coupled between the driving wheel and the rear links, a fly wheel revolvably supported in a front wheel slot in the main shaft and coupled to the driving wheel by a transmission belt, two foot plates respectively supported on the actuating bars, and two handlebars respectively pivoted to the top onds of the oscillating bars.
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