US Patent 11779506 Connecting rod self-locking structure for double-folded rollator

The present invention discloses a connecting rod self-locking structure for a double-folded rollator, comprising a cross pipe and two sets of main frame bottom pipes arranged in parallel to the left and right. A folding plastic seat is movably mounted on the top of the front end of the main frame bottom pipe via a pin shaft, two sides of the bottom of the folding plastic seat are clamped on the side edge of the main frame bottom pipe, the bottom of the cross pipe is movably connected to the folding plastic seat, a connecting rod hook is connected to a connecting rod via a torsion spring, and a limiting column for the connecting rod hook to be buckled is further provided on the upper part of the cross pipe.