push trolley

Abstract

Push trolley, wherein the push trolley includes a frame (100), the frame (100) includes a push rod unit (10), a front leg unit (20) and a rear leg unit (30), and the push rod unit (10) is rotatably connected to the front leg unit (20) and the rear leg unit (30); wherein a fold-out element (60) is provided in an opposite region between the front leg unit (20) and the rear leg unit (30), and as the front leg unit (20) and the rear leg unit (30) fold out and in, the fold-out element (60) moves between a first and a second position; wherein one end of the fold-out element (60) is rotatably connected to the front leg unit (20) and a torsion spring (80) is provided between the fold-out element (60) and the front leg unit (20); wherein the fold-out element (60) is in the first position, when the frame (100) is unfolded;wherein the folding element (60) rotates relative to the front leg unit (20) and one end of the folding element (60) slides against the rear leg unit (30) when the frame (100) is folded, and at this time the folding element (60) moves from the first position to the second position, a locking element (50) locks a folded state of the frame (100), and the torsion spring (80) stores force; wherein the folding element (60) pushes the front leg unit (20) away from the rear leg unit (30) by releasing the stored force via the torsion spring (80) in order to release the folded state of the frame (100) when the locking element (50) is unlocked, and the folding element (60) returns from the second position to the first position.