Control member for controlling at least one function of a timepiece movement

A control member configured to control at least one first function of a timepiece movement, said control member comprising:

• a crown comprising:
• a head;
• and
• a central rod rigidly connected to the head;
• a control rod configured to be rigidly connected to the central rod;
• a guide tube, having a longitudinal axis A, in which said central rod is mounted such that the central rod can at least rotate axially according to said longitudinal axis A;
• and
• a spring arranged inside the guide tube;
• the crown being arranged to occupy at least one non-pressed position in which said crown can rotate axially in at least a first direction between at least one stable neutral angular position and at least one unstable angular actuation position in which said at least one first function can be actuated via the control rod;
• wherein the control member further comprises:
• an automatic bringing-back device configured to automatically bring the crown from the at least one unstable angular actuation position back to the at least one stable neutral angular position, the automatic bringing-back device comprising:
• a first tubular cam mounted around the central rod such that the first tubular cam is rigidly connected thereto, and
• a second tubular cam housed inside the guide tube, mounted such that the second tubular cam can freely translate axially on the central rod and arranged so as to be able to essentially slide axially within the guide tube and to cooperate with the spring provided in said guide tube,
• wherein said first tubular cam and said second tubular cam have working surfaces arranged to be in contact with one another at least when the crown is in the at least one stable neutral angular position, said working surfaces having a profile obtained by having at least one plane inclined on the longitudinal axis A intersect said first and second tubular cams such that, by cooperation of the working surfaces, an axial rotation of the first tubular cam via a rotation of the crown into the unstable angular actuation position results in an axial translation of the second tubular cam, compressing the spring, and such that, by the cooperation of the working surfaces, an axial translation of the second tubular cam returned by the spring, when the rotation into the unstable angular actuation position ceases, results in an axial rotation of the first tubular cam, which automatically returns the crown to the at least one stable neutral angular position.