A manual control device, the manual control device comprising: - a base, - a control button mounted on the base in a manner providing at least one ability to move relative to the base in at least one degree of freedom either by pivoting or by translation, the control button delimiting at least one bearing area (13a, 13b) accessible from outside the manual control device, each bearing area (13a, 13b) allowing the manual application of a bearing force by the user of the manual control device on the bearing area (13a, 13b), said bearing force causing a displacement of the bearing area (13a, 13b) concerned from a stable inactive position to an unstable active position, - at least one switch (14a, 14b) likely to occupy an active state and an inactive state, a switch (14a, 14b) being associated with a bearing area (13a, 13b) of the control button, the bearing area (13a, 13b) placing the associated switch (14a, 14b) in the inactive state when it occupies the stable inactive position and placing the associated switch (14a, 14b) in the active state when it occupies the unstable active position, - a return mechanism urging the control button in a manner tending to return said at least one bearing area (13a, 13b) to the stable inactive position, wherein: the return mechanism comprises a toroidal element formed from an elastic material, the manual control device comprises receiving elements belonging to the control button and/or to the base, the receiving elements making it possible to receive the toroidal element and to ensure its retention relative to the control button and to the base, characterized in that the receiving elements are arranged so as to locally impose on the toroidal element at least one inflection (20, 20A, 20B) generating a pre-stressing variable along the circumference of the toroidal element. - a base, - a control button mounted on the base in a manner providing at least one ability to move relative to the base in at least one degree of freedom either by pivoting or by translation, the control button delimiting at least one bearing area (13a, 13b) accessible from outside the manual control device, each bearing area (13a, 13b) allowing the manual application of a bearing force by the user of the manual control device on the bearing area (13a, 13b), said bearing force causing a displacement of the bearing area (13a, 13b) concerned from a stable inactive position to an unstable active position, - at least one switch (14a, 14b) likely to occupy an active state and an inactive state, a switch (14a, 14b) being associated with a bearing area (13a, 13b) of the control button, the bearing area (13a, 13b) placing the associated switch (14a, 14b) in the inactive state when it occupies the stable inactive position and placing the associated switch (14a, 14b) in the active state when it occupies the unstable active position, - a return mechanism urging the control button in a manner tending to return said at least one bearing area (13a, 13b) to the stable inactive position, the return mechanism comprises a toroidal element formed from an elastic material, the manual control device comprises receiving elements belonging to the control button and/or to the base, the receiving elements making it possible to receive the toroidal element and to ensure its retention relative to the control button and to the base, characterized in that the receiving elements are arranged so as to locally impose on the toroidal element at least one inflection (20, 20A, 20B) generating a pre-stressing variable along the circumference of the toroidal element.