Mobile spoiler assembly for a road vehicle, method of controlling a mobile spoiler for a road vehicle and related road vehicle

A movable spoiler assembly (7;

• 7′) for a road vehicle (1), the movable spoiler assembly (7;
• 7′) comprising:
• a movable spoiler (6) configured to be movably attached to a body (5) of the road vehicle (1) and capable of being moved, in a mounted condition of the movable spoiler assembly (7;
• 7′) on the road vehicle (1), at least between a retracted position, wherein it is arranged in a position proximal to the body (5), and an extracted position, wherein it is arranged in a position distal to the body (5);
• and
• an actuation system configured to control the movable spoiler (6) between the retracted position and the extracted position;
• the movable spoiler (6) defining an airfoil element having a longitudinal axis (C) and including a leading edge (8) and a trailing edge (10) extending along at least one axial direction;
• the actuation system comprising at least two electric actuators (11, 12) to move the movable spoiler (6) and at least two transmission elements (13, 14) to operatively couple each actuator (11, 12) to the movable spoiler (6), respectively;
• wherein the at least two electric actuators (11, 12) comprise a first actuator (11) configured to command at least displacement of the movable spoiler (6) between the retracted position and the extracted position, and a second actuator (12) configured to command at least a tilt of the movable spoiler (6) with respect to the longitudinal axis (C), so as to vary an angle of incidence of said leading edge (8), in said mounted condition, relative to a forward motion direction of the road vehicle (1);
• wherein the first actuator (11) is of a linear type and comprises a first guide element (15) having a straight section (15a) and a slide element (16) slidable on the straight section (15a) to command movement of the movable spoiler (6) between the retracted position and the extracted position;
• wherein the second actuator (12) is of a rotary type, has an axis of rotation (D) and comprises a shaft (27) operable in rotation about the axis of rotation (D);
• wherein the first guide element (15) is mainly oriented along a direction parallel to a direction of travel of the road vehicle (1);
• wherein the at least two transmission elements comprise:
• a first transmission element (13) comprising a first arm (21) connecting the slide element (16) of the first actuator (11) to the movable spoiler (6) at a first hinge (19) arranged between the leading edge (8) and the trailing edge (10) at a position relatively closer to one of the leading edge (8) or the trailing edge (10), and
• a second transmission element (14) comprising an articulated arm (28) connecting the shaft (27) of the second actuator (12) to the movable spoiler (6) at a second hinge (20) arranged between the leading edge (8) and the trailing edge (10) at a position relatively closer to the other of the leading edge (8) or the trailing edge (10) with respect to the first hinge (19),
• the first actuator (11) being configured to hold the first hinge (19) in place, and
• the second actuator (12) being configured to command a rotation of the second hinge (20) around the first hinge (19) held in position, so as to determine said tilt of the movable spoiler (6) and variation of said angle of incidence;
• and wherein the shaft (27) is rotatable to command a displacement of the articulated arm (28), determining said rotation of the second hinge (20) about the first hinge (19) and thereby varying said angle of incidence.