Tilting forecarriage of a motor vehicle and a related motor vehicle

Motor vehicle forecarriage comprising

• a forecarriage frame,
• a pair of front wheels kinematically connected to the forecarriage frame by means of an articulated quadrilateral,
• said articulated quadrilateral comprising a pair of cross members, hinged to the forecarriage frame at middle hinges,
• said cross members being connected to each other, at opposite transverse ends, by means of uprights pivoted to said transverse ends at side hinges, each upright extending from an upper end to a lower end, the upper end being turned towards the upper cross member and the lower end being turned towards the lower cross member,
• the cross members and the uprights defining the articulated quadrilateral,
• wherein
• the forecarriage comprises, at each front wheel, a tilting support structure mechanically connected to a rotation pin of each front wheel so as to rotatably support the front wheel around a related rotation axis,
• the tilting support structure being hinged to the articulated quadrilateral by means of steering hinges arranged at the upper ends and lower ends of each upright, said steering hinges defining respective steering axes of the wheels parallel to each other,
• wherein
• the tilting support structure comprises
• a guide wheel connected to the rotation pin of each front wheel at a special wheel attachment,
• a support bracket hinged to the articulated quadrilateral by means of said steering hinges,
• the guide wheel being in turn hinged to the support bracket at opposite upper and lower axial ends, by means of two tilting hinges that define respective tilting axes and that form a roto-translational connection between the guide wheel and the support bracket,
• wherein the tilting support structure comprises
• a damper element and/or an elastic element to control the tilting movement, wherein the elastic element connects the guide wheel and the support bracket to each other.