Elliptical exercise machine
An elliptical exercise machine includes a frame, an impedance unit, two linkage units and a stride-adjusting unit. The impedance unit includes a flywheel supported on the frame and two cranks connected to the flywheel. Each linkage unit includes a rocking element and a moving element. The rocking element includes an upper end and a lower end. The moving element includes a rear end and a front end connected to the lower end of the rocking element. The stride-adjusting unit includes a threaded rod and a carrier. The threaded rod is supported on the frame. The carrier is connected to the upper end of the rocking element and formed with a screw hole for receiving the threaded rod so that the threaded rod can rotate to move the carrier and the upper end of the rocking element to adjust a stride of the elliptical exercise machine.
1. An elliptical exercise machine including:
a frame including a base and a post supported on the base;
an impedance unit including a flywheel supported on the base and two cranks connected to the flywheel;
two linkage units each including:
a rocking element including an upper end and a lower end;
a moving element including a rear end and a front end connected to the lower end of the rocking element;
an auxiliary element including an upper end and a lower end connected to a corresponding one of the cranks; and
a joint for connecting the upper end of the auxiliary element to the rocking element;
a stride-adjusting unit including:
a threaded rod supported on the post; and
a carrier connected to the upper end of the rocking element and formed with a screw hole for receiving the threaded rod so that the threaded rod can rotate to move the carrier and the upper end of the rocking element to adjust a stride of the elliptical exercise machine; and
two primary handle units each including:
a primary handle;
a front bar;
a rear bar including an end connected to an end of the front bar and another end connected to the carrier;
an upper bar including an end connected to another end of the front bar; and
a lower bar including an end connected to another end of the upper bar and another end connected to the joint of a corresponding one of the linkage units.
2. The elliptical exercise machine according to claim 1 , wherein the stride-adjusting unit includes a guiding element supported on the post, wherein the carrier includes a sleeve movably placed on the guiding element to guide the carrier and the upper end of the rocking element to move rectilinearly.
3. The elliptical exercise machine according to claim 2 , wherein the carrier includes a lining placed between the sleeve and the guiding element to ensure smooth movement of the sleeve along the guiding element.
4. The elliptical exercise machine according to claim 1 , wherein in each of the primary handle units, the primary handle includes a lower end connected to the upper bar so that the primary handle pivots together with the upper bar.
5. The elliptical exercise machine according to claim 1 , including two secondary handles connected to two opposite sides of the post.
6. The elliptical exercise machine according to claim 5 , wherein each of the secondary handles includes a lower end connected to the post.