IMPROVED FRICTION CLUTCH LAUNCHER AND MOTOR VEHICLE THERMAL MOTOR STARTER CORRESPONDING

摘要

The present invention relates mainly to a starter actuator for thermal engine of a motor vehicle comprising a door - pinion (83) on which is mounted a drive pinion (32), a driver (81) mounted on a drive shaft (33), characterized in that it further includes a friction clutch (82) is interposed between the driver (81) and the drive pinion (32) comprises an element of the reaction (91) is integral in rotation of the drive pinion (32) and a pressure element (92) is integral in rotation of the driver (81), an internal set of disks (931, 932) and external (941 - 943) alternately connected in rotation with the driver (81) and the door - pinion (83), as well as at least one elastic means (96, 97) arranged so as to ensure a transmission stage of the torque by the clutch (82) when the clutch (82) passes in the unlocked state to the locked state, so that the level of the torque transmitted by the clutch (82) has at least one intermediate threshold for the passage of the torque for which only a part of the facing surfaces - to - respect to the inner disk (931, 932) and external (941 - 943) are in contact with each other and a final threshold for the passage of a torque greater than the threshold of the passage of the torque for which all the facing surfaces - to - respect to the inner disk (931, 932) and external (941 - 943) are in contact with each other.