Starter for motor vehicule with epicyclic reduction gear having a torque limiter

摘要

The starter consists of an electric motor (10) with its output shaft (16) turning a starter drive assembly via a reduction gear (26). An epicyclic gear train (20,60,68) is positioned in a cylindrical housing (24) in which a toothed crown wheel (58) meshing with internal teeth of the gear train is connected to the housing via a friction torque limiter (80). The torque limiter is formed between the lateral surface of the crown wheel and an internal flange (30) in the housing which are pressed together elastically by a truncated conical spring (98). The crown wheel can have two opposite friction faces, with the second one interacting with a thrust ring (96), and the crown wheel itself is made from a material with good friction properties and a high resistance to wear.