Patent ID: 7669930

Claim:
A lockable pressure adjustment seat of a fitness apparatus comprising a base, a seat back, and an adjustment unit, wherein the base is pivotally connected with the seat back; the base comprising a slide track disposed close to one end of the base and a locating hole disposed close to another end of the base; the seat back comprising an extension rod, the extension rod having one end linked and fixed to the seat back and a through hole being disposed at the other end of the extension rod; the adjustment unit comprising a lever, a pressure bar, and a locking set, the lever penetrating through and sliding in the slide track of the base, the pressure bar extending from its front end a push rod and disposed at its rear end a fixation base, the push rod having a front end holding against the lever, the fixation base being secured to the other end of the extension rod, the locking set being secured to the fixation base and including an elastic member and a locating rod, the elastic member pushing the locating rod to penetrate through the through hole of the extension rod to be held in position in the locating hole of the base; the locating rod being pulled out to clear off the locating hole of the base so as to adjust the seat back by pressing the lever to move the push rod, and then the locating rod being released to hold against the locating hole of the base to be secured in position; the locating rod having a lateral pin provided at a middle section thereof, a groove being disposed in the through hole of the extension rod, a protruding ring being provided at a front section of the locating rod, the elastic member having one end to hold against the protruding ring and another end to hold against the extension rod, the lateral pin passing through the groove by turning the locating rod.