Clutch mechanism, in particular for a motorized vehicle

A clutch mechanism for a motorized vehicle, comprising a cover, a pressure plate coupled in rotation with the cover and movable axially relative thereto, and a diaphragm spring bearing against the cover and the pressure plate,

• the diaphragm spring being held in axial preload against the cover by a support washer provided with axial protuberances passing through the diaphragm spring and the cover, each axial protuberance having an axial stop able to transmit an axial preload force to the cover, and a plurality of elastic segments, distributed angularly about the axis of rotation of the clutch mechanism, these segments being arranged between two adjacent components of the clutch mechanism, namely between the axial stop of the axial protuberances and the cover or between the support washer and the diaphragm spring, which elastic segments exert the axial preload on the diaphragm spring,
• wherein each elastic segment exerts a first action force over a first force-application diameter and a second action force over a second force-application diameter on one of the adjacent components of the clutch mechanism, as well as a reaction force over a third force-application diameter on the other adjacent component of the clutch mechanism, the first, second and third force-application diameters being concentric and radially spaced.