An articulated assembly includes a first piece connected to a second piece by a screwless hinge having a body with a cylindrical axial recess of revolution which opens onto at least one of the axial faces of the body and a cylindrical hub of revolution, with a diameter corresponding to that of the axial recess, fully housed in the axial recess; this hub including a radial cavity opening onto its periphery, and the lateral wall of the body having an opening of predetermined angular extent. The first piece includes an end provided with fixing elements arranged to be fixedly attached to the hinge body, the second piece includes an end provided with coupling elements suitable for being introduced into the radial cavity through the body opening and with retaining elements cooperating, in the in-use position introduced into the axial cavity of the hub, with the cylindrical wall of revolution.