| 摘要 |
A treadmill (10) includes a frame (12) on which are rotatably mounted first and second transverse roller assemblies (14, 16). An endless belt (18) is trained around the roller assemblies. A deck (20) is supported between the upper run of the belt and the frame by a plurality of rectilinear-shaped elastic cushions 100 that are reversibly deformable under the load imposed on a deck by the footplant of the treadmill user. The cushions 100 are not of uniform cross-section; rather, one or both of the ends of the cushions are relieved so as to present a nominally reduced cross-sectional area against the frame and/or deck. As the cushion is compressed from the load imposed on the deck, the cross-sectional area of the cushion providing resistance to further deformation/deflection of the cushion increases thereby increasing the resistance or stiffness of the cushion to further deformation and thus further travel of the treadmill deck (20) towards the frame (12).
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