The invention relates to a collapsible frame (1;31;51) for a pushchair, comprising a chassis (4; 34; 54) with several wheels (2, 3; 32, 33; 52, 53, 53′), a frame (5; 35; 55), supporting the body (6), in particular a seat, shell, pouch or similar for a child, and a folding mechanism (7; 37; 57), arranged between the same, to change the separation of the support frame (5; 35; 55) of the body (6) from the chassis 4; 34; 54), whereby the folding mechanism (7; 37; 57) comprises at least two parallel arms (18, 19; 40, 41; 66, 67), connected in the style of a parallelogram link to the chassis (4; 34; 54) at one side and the to the support frame (5; 35; 55) on the other side. According to the invention, the connecting line between the joints points (39: 65) of both arms (18, 19; 40, 41; 66, 67) of a pair on the chassis (4; 34; 54) include a greater angle with the horizontal contact plane of the wheels (2, 3; 32, 33; 52, 53, 53′) than with the verticals running perpendicular to that plane.