Patent ID: 6664652
Filing Date: 2003-12-16
Classification: F02N,F16F,Y10T

Abstract:
Motor-vehicle starter including an electric motor (10) an output shaft (16) of which rotationally drives a coaxial drive with the interposition a step-down planetary gear train (22) including a cylindrical casing (24) within which a crown ring (58), internally toothed, of the planetary gear train (22) is mounted so as to rotate, and of the type in which the crown ring (58) is linked in rotation to the casing (24) by way of a friction-type torque-limiter device which is interposed axially between the crown ring (58) and a lateral flange (30, 34) of the casing (24) and which consists of at least one annular, friction side face (82, 84) of the crown ring (58) and of a disc (88, 89) which is linked in rotation to the casing (24), which are pressed axially and elastically against one another by an elastic element (112) bearing axially on a reaction surface of the disc (88, 89), wherein the disc (88, 89) is linked in rotation to the casing (24) by way of at least one damper block (92), elastically deformable, which absorbs mechanical energy when it is compressed, in such a way as to damp the variations in torque transmitted to the crown ring (58).