| 摘要 |
<p>An exercise treadmill (10) includes a deck assembly (12') having a rearward end portion pivotally mounted on an underlying frame (14'). A powered endless belt (100) is mounted on the deck assembly (12') to present a moving surface which slides over the top of the deck assembly. The forward end of the deck assembly is supported by a suspension system (20') utilizing lever arms (160L' and 160R') mounted on the frame (14') to pivot about an axis (169'). The lever arms are pivotally interconnected with the deck at a location distal from the pivot axis of the lever arms. Dampeners in the form of shock absorbers (178) are connected between the lever arms and the frame to impart a progressively increasing damping force on the lever arms as the lever arms rotate about their pivot axis under the influence of the descending deck. A longitudinal slide (270) is disposed within the deck assembly (12') and a spring loaded detent ball (280) mounted within the slide (270) engages with detents (278a, 278b, 278c) formed within the deck assembly (12'), in order to provide a suspension system (20') in which the response to the runner's foot varies from "soft" to "hard". <IMAGE></p> |
