Patent ID: 7585255

Claim:
A folding treadmill comprising: a base frame for positioning on the floor, said base frame having a stop member; a treadbase pivotally coupled to said base frame and biasable relative to said base frame between a horizontal operative position and a vertical non-operative position; and a positioning structure including a control mechanism, a link and a stop mechanism, said control mechanism having a holder base, a pull slider and a control block, said holder base being fixedly mounted in a rear side of said treadbase, said pull slider being mounted in said holder base and movable by an external force along a first direction, said pull slider having a beveled face, said control block being mounted in said holder base and movable by an external force along a second direction, said control block having a beveled face abutting against and slidingly movable along the beveled face of said pull slider, said link having a first end connected with said pull slider and a second end, a stop member of said stop mechanism being mounted in a front side of said treadbase and connected with the second end of said link and normally extending out of said treadbase; wherein when said treadbase is set in said vertical non-operative position, the stop member of said stop mechanism is stopped against the stop member of said base frame to stop said treadbase in said vertical non-operative position; when said control block is pressed by an external force to move said pull slider, said link is pulled by said pull slider to retract the stop member of said stop mechanism away from the stop member of said base frame for enabling said treadbase to be biased from said vertical non-operative position to said horizontal operative position.