Human-machine interface comprising: - a chassis (6; 106), - a utensil (4; 104) which can be rotated by a user in a first direction, about a first axis, from a neutral position to a first inclined position, the neutral position being the position of the utensil in the absence of external stress on the utensil, - a mechanism for returning the utensil to its neutral position, this return mechanism comprising: - first and second springs (52, 54) which constantly urge the utensil towards its neutral position, - a rocker (50; 150) suspended on the first and second springs (52, 54), this rocker being rotatable in the first direction, about a second axis (86; 144), between a rest position in which the rocker holds the utensil in its neutral position and a first tilted position in which the utensil is in its first tilted position, the second axis being distinct from and parallel to the first axis, the rocker comprising a first and a second wing (60, 80) each situated on a respective side of a median plane containing the first axis, these first and second wings comprising, respectively, first and second zones (68; 110) for receiving one end of a spring, the orthogonal projection of the second receiving zone (68, 110), in a plane containing the first and second axes (10, 86; 144), being situated entirely between the first and second axes, and - the first and second springs (52, 54) each have a first end fixed to the chassis and a second end received inside the first and second reception areas respectively characterised in that the return mechanism comprises a sliding connection (12A, 12B, 64; 122, 132, 124, 134) between the rocker and the utensil, this sliding connection being capable of transforming the displacement, in rotation in the first direction, of the utensil towards the first inclined position into a displacement, in rotation in the first direction, of the rocker towards the first tilted position and of transforming the displacement of the rocker towards its rest position into a displacement of the utensil towards its neutral position. - a chassis (6; 106), - a utensil (4; 104) which can be rotated by a user in a first direction, about a first axis, from a neutral position to a first inclined position, the neutral position being the position of the utensil in the absence of external stress on the utensil, - a mechanism for returning the utensil to its neutral position, this return mechanism comprising: - first and second springs (52, 54) which constantly urge the utensil towards its neutral position, - a rocker (50; 150) suspended on the first and second springs (52, 54), this rocker being rotatable in the first direction, about a second axis (86; 144), between a rest position in which the rocker holds the utensil in its neutral position and a first tilted position in which the utensil is in its first tilted position, the second axis being distinct from and parallel to the first axis, the rocker comprising a first and a second wing (60, 80) each situated on a respective side of a median plane containing the first axis, these first and second wings comprising, respectively, first and second zones (68; 110) for receiving one end of a spring, the orthogonal projection of the second receiving zone (68, 110), in a plane containing the first and second axes (10, 86; 144), being situated entirely between the first and second axes, and - first and second springs (52, 54) which constantly urge the utensil towards its neutral position, - a rocker (50; 150) suspended on the first and second springs (52, 54), this rocker being rotatable in the first direction, about a second axis (86; 144), between a rest position in which the rocker holds the utensil in its neutral position and a first tilted position in which the utensil is in its first tilted position, the second axis being distinct from and parallel to the first axis, the rocker comprising a first and a second wing (60, 80) each situated on a respective side of a median plane containing the first axis, these first and second wings comprising, respectively, first and second zones (68; 110) for receiving one end of a spring, the orthogonal projection of the second receiving zone (68, 110), in a plane containing the first and second axes (10, 86; 144), being situated entirely between the first and second axes, and - the first and second springs (52, 54) each have a first end fixed to the chassis and a second end received inside the first and second reception areas respectively