Motor vehicle forecarriage (8) comprising a forecarriage frame (16), a pair of front wheels (10, 10) kinematically connected to the forecarriage frame (16) by means of an articulated quadrilateral (20), said articulated quadrilateral (20) comprising a pair of cross members (24, 24), hinged to the forecarriage frame (16) at middle hinges (28), said cross members (24, 24) being connected to each other at opposite transverse ends (40, 44), by means of uprights (48, 48, 48) pivoted to said transverse ends (40, 44) at side hinges (52), the cross members (24, 24) and the uprights (48), the tilting support structure (72) being hinged to the articulated quadrilateral (20) by means of steering hinges (76) a guide wheel (88) connected to the rotation pin (68) of front wheel (10, 10) at a special wheel attachment (94), a support bracket (92) hinged to the articulated quadrilateral (20) by means of said steering hinges (76), the guide wheel (88) being in turn hinged to the support bracket (92) at opposite upper and lower axial ends (96, 98).

Motor vehicle forecarriage (8) comprising a forecarriage frame (16), a pair of front wheels (10, 10) kinematically connected to the forecarriage frame (16) by means of an articulated quadrilateral (20), said articulated quadrilateral (20) comprising a pair of cross members (24, 24), hinged to the forecarriage frame (16) at middle hinges (28), said cross members (24, 24) being connected to each other at opposite transverse ends (40, 44), by means of uprights (48, 48, 48) pivoted to said transverse ends (40, 44) at side hinges (52), the cross members (24, 24) and the uprights (48), the tilting support structure (72) being hinged to the articulated quadrilateral (20) by means of steering hinges (76) a guide wheel (88) connected to the rotation pin (68) of front wheel (10, 10) at a special wheel attachment (94), a support bracket (92) hinged to the articulated quadrilateral (20) by means of said steering hinges (76), the guide wheel (88) being in turn hinged to the support bracket (92) at opposite upper and lower axial ends (96, 98).

A leaf spring device for a vehicle, comprising a leaf spring apparatus made of a fiber composite plastic, a first bearing point provided at a first end section of the leaf spring apparatus for supporting the leaf spring device on the vehicle, the first bearing point comprising exactly three rotational degrees of freedom, and a second bearing point provided at a second end section of the leaf spring apparatus facing away from the first end section for supporting the leaf spring device on the vehicle, the second bearing point comprising exactly one rotational degree of freedom.

A leaf spring for a wheel suspension of a motor vehicle, comprises a first spring part made from a fiber reinforced plastic material and a second spring part made from a steel material. The first spring part and the second spring part are connected to each other. The ratio of the length of the first spring part to the length of the second spring part is larger than two. A leaf spring assembly can include such a leaf spring and receiving devices.

A leaf spring for a wheel suspension of a motor vehicle, comprises a first spring part made from a fibre reinforced plastic material and a second spring part made from a steel material. The first spring part and the second spring part are connected to each other. The ratio of the length of the first spring part to the length of the second spring part is larger than two. A leaf spring assembly can include such a leaf spring and receiving devices.

A leaf spring device for a vehicle, comprising a leaf spring apparatus made of a fiber composite plastic, a first bearing point provided at a first end section of the leaf spring apparatus for supporting the leaf spring device on the vehicle, the first bearing point comprising exactly three rotational degrees of freedom, and a second bearing point provided at a second end section of the leaf spring apparatus facing away from the first end section for supporting the leaf spring device on the vehicle, the second bearing point comprising exactly one rotational degree of freedom.