Transmission mechanism for a horological movement

A transmission mechanism, for a horological movement, configured to transmit movements from a driving wheel to a driven wheel of the horological movement, the mechanism comprising:

• a transmission wheel comprising a driving plate configured to be linked kinematically to the driving wheel and to pivot about a first fixed axis of rotation in response to the movements of the driving wheel, and a link organ having a flexible portion and bearing a unidirectional transmission organ configured to cooperate with a driving surface of an output wheel configured to be linked to the driven wheel and to drive said driving surface when the driving wheel is displaced in a first direction of displacement, said link organ comprising
• a base secured to said driving plate and configured to exhibit a rotational movement about said first fixed axis of rotation, in response to the movements of the driving wheel, and
• a first arm extending from said base and bearing said unidirectional transmission organ at a distal end of the first arm, said flexible portion being disposed on said first arm.