| 摘要 |
An elliptical exercise machine includes a bottom frame, two transmission bars, and two stepping bars. The bottom frame has a rotating axis, both sides of which are provided with a crank, respectively. One end of each of the two transmission bars is connected with the corresponding crank. The two stepping bars are connected with the two transmission bars. The other end of each of the stepping bars has a dragging mechanism mounted on the bottom frame. Driven by the two swing arms and the two transmission bars, the two stepping bars perform elliptical motions. Before the two stepping bars move to the left and right extremities of the elliptical curve, the corresponding dragging mechanism is driven to produce a quick return action. The two dragging mechanisms also simultaneously perform reciprocal dragging motions to correct the elliptical motions of the stepping bars and make the motions smoother. |
