Deceleration device for a hinge and a hinge having the deceleration device

Device for decelerating rotation of a hinge in particular for furniture, of the type comprising a container accommodating at least one rotating friction element and a friction surface, the at least one rotating friction element adapted to slide on said friction surface, a slider moveable along a translational direction during the rotation of said hinge, and kinematic means for transforming translation of said slider into a rotation of said at least one friction element, said kinematic means comprise a drawing element integrally joined to said slider and permanently confined inside the profile of a cam provided for on said friction element, said cam has a curvilinear development in radial direction on said friction element, and a width progressively increasing from a periphery towards a center of said friction element, said drawing element being selectively engageable with a first section of said profile of said cam for rotating said friction element during opening rotation of said hinge or with a second section of said profile of said cam for rotating said friction element during a final phase of closure rotation of said hinge.