An exercise device to the body strengthening

摘要

An exercise machine comprises a base 10, a seat rod 40 with a seat 41 at one end, and a pedal rod 50 with at least one pedal 51 at one end, the other ends of the rods being supported either in a box body 20 or in mounts (80,81, figures 7-9) so that the rods can swing back and forth about an axis extending longitudinally of the machine. When a box body is provided it preferably includes an upper plate 22 carrying a pair of spring pieces 23, 24 and a pair of upper locating blocks 25, 26 in each of which is formed a V-shaped slot 251, 261, and a lower plate 21 carrying a lower locating block 27 formed with a pair of V-shaped slots 271, 272. Braking blocks 42, 52 carried by the rods are located within one of the upper slots and one of the lower slots and are held therein by the spring pieces 23, 24 (figure 4). When mounts 80,81, figure 8) are provided then the rods carry tubes (45, 55, figure 8) which are inserted in the mounts with bolts (82, 83, figure 8) passing through holes in the mounts to pivotally fasten the rods in the mounts. The base may be formed of two parallel rods 101, 102, and the box body, which may have a cover 60, or the mounts are held between the parallel rods. The machine is capable of twirling the waist of a user.