Patent ID: 6964636

Claim:
A body exercising device comprising: a sleeve having a top end protruded with an upright tube, the upright tube provided with a handle mounting structure for mounting a handle, a retractable sleeve secured on the bottom end of the sleeve, an insertion sleeve secured on the bottom end of the retractable sleeve and inserted into the insertion holes of a seat cushion, the sleeve having a mediate section having an outer wall formed with two opposite rotation slots for mounting a drive structure; the drive structure including two opposite rotation blocks respectively mounted on the sleeve, a passage rod mounted between the two opposite rotation blocks and extended through the two opposite rotation slots of the sleeve, a guide rod having a top end mounted on the passage rod, a first spring mounted on the guide rod, the guide rod having a bottom end provided with a protruding drive shaft for driving a first race and a second race; an outer tube mounted in the sleeve for passage of the guide rod, the top end of the outer tube urged on the bottom end of the first spring, the first race mounted in the outer tube and having an inner wall provided with two protruding blocks for pressing of the drive shaft of the guide rod, the second race mounted in the outer tube and having an inner wall provided with two protruding blocks for pressing of the drive shaft of the guide rod, the first race having an outer wall provided with a guide block that may slide on a middle tube, and the second race having an outer wall provided with a guide block that may slide on the middle tube; an inner tube having a top end secured on the bottom end of the guide rod, a second spring mounted on the inner tube and urged between the second race and the insertion sleeve; the middle tube mounted between the second spring of the inner tube and the outer tube and having an outer wall provided with two opposite guide grooves for guiding movement of the guide block of the first race and the guide block of the second race, a third spring mounted on the middle tube and urged between the first race and the insertion sleeve; wherein, the sleeve may be used to compress the first spring, while the rotation blocks of the drive structure may be rotated to rotate the drive shaft of the guide rod, so that the drive shaft of the guide rod may be inserted into the first race or the second race, thereby increasing the pushing and supporting force of the second spring and the third spring, and thereby changing the exercising load, so as to achieve the requirements of different users.