Cushioning mechanism for a treadmill

Abstract

A cushioning mechanism for a treadmill, wherein at least one set of the cushioning mechanism is interposed between a base frame and a running board, and wherein the cushioning mechanism includes two support hanging pieces, two swing hanging pieces, and an arched metal plate, and wherein the top surface of the arched metal plate is just in contact with the bottom surface of the running board. When the running board is subject to a downward force and sink, the arched metal plate mounted below will be compressed and expanded externally. The expansion displacement of the arched metal plate is compensated by the swing effect of the swing hanging pieces. When the external force is eliminated, the running board is returned back to its original position by the restoring ability of the arched metal plate so that an expected and optimal cushioning effect is achieved.

1 . A cushioning mechanism for a treadmill, wherein at least one set of the cushioning mechanism is interposed between a base frame and a running board, and wherein the cushioning mechanism includes two support hanging pieces, two swing hanging pieces, and an arched metal plate, and wherein the support hanging pieces each have one end fixed at the base frame and the other end pivotably connected to the swing hanging pieces, and wherein the swing hanging pieces are mounted in a hanging way with the bottom end pivotably connected to the arched metal plate, and wherein the arched metal plate is constructed in the form of curvature with both ends thereof pivotably connected the swing hanging pieces  24  and with the top surface just in contact with the bottom surface of the running board, and wherein, when the running board is subject to a downward force and sink, the arched metal plate mounted below will be compressed and expanded externally, and wherein the expansion displacement of the arched metal plate is compensated by the swing effect of the swing hanging pieces, and wherein, when the external force is eliminated, the running board is returned back to its original position by the restoring ability of the arched metal plate so that an expected and optimal cushioning effect is achieved.