Free-wheel provided with variable-geometry lubrication barrier

A free-wheel comprising a driving part and a driven part that are able to rotate about an axis of rotation, the free-wheel comprising at least one rotational connecting member arranged in a connection space, a driven connection section of the driven part surrounding a driving connection section of the driving part, the connection space being located radially, with respect to the axis of rotation, between the driving connection section and the driven connection section, the free-wheel having at least one lubrication device conveying a lubricating fluid into the connection space,

• wherein the free-wheel comprises at least one barrier, a geometry of the barrier varies depending on a speed of rotation of the driving part about the axis of rotation, the barrier being arranged radially between the driving part and the driven part and longitudinally against the connection space, the barrier being constrained to rotate with the driving connection section.