This utility model relates to the field of
rehabilitation training assistive devices, specifically to a motion balance mechanism for an upper arm flexor and extensor
muscle group
rehabilitation device. It includes a main column and a seat component mounted on the main column, as well as a fixed tube mounted on the seat component. Both ends of the fixed tube are equipped with swing units, which are symmetrically distributed on both sides of the seat component. Each swing unit includes a lever, with the lever shaft connected to the end of the fixed tube via a hinge. The lever rotates around the end of the fixed tube. The lever includes a rotating arm and a connecting tube positioned opposite each other on either side of the hinge. The end of the rotating arm is provided with a
handle for gripping, and the end of the connecting tube is provided with a counterweight. In this utility model, when the patient grips the
handle to perform flexion and extension movements, the torque generated by the rotating arm can be counterbalanced by the counterweight, improving
patient comfort and helping to eliminate discomfort during
rehabilitation training.