Size-Reducible Folding Tricycle for Children

A folding tricycle (1) for children, comprising a frame (2) having a central part (3) carrying at its front a head tube (5) through which there passes a steering shaft (6) connected to a front wheel (7) and to a handlebar (8), said central part (3) being connected at its rear to first ends (11) of rear arms (12) carrying a corresponding rotatable wheel (14) at their second end (13), the first end (11) of said arms (12) being hinged to said central part (3) such as to be able to assume at least two working positions, in a first position said arms (12) extending from said central part (3) and in a second position they lying along the side of said part (3), characterised in that the central part (3) of the frame (2) comprises a portion (17) connecting it to said first end (11) of said arms (12), said connecting portion (17) presenting free surfaces (16) lying in planes inclined to a central plane (W) of the frame (2) and converging to the front of said central part (3) of this latter, said first end of said arms (12) being shaped to provide a form fit with said free surfaces (16) and cooperating with these such that when in said second working position said arms (12) converge towards said central part (3).