DEVICE FOR INTRODUCING AN AUXILIARY TORQUE INTO A STEERING SHAFT

摘要

The invention relates to a device (2) for introducing an auxiliary torque into a steering shaft (1) of an electromechanical power steering system (100), comprising an electric motor (4) which has a motor shaft (40) that is coupled to a gear wheel (21) via a coupling element (6) so as to transmit a torque, said gear wheel meshing with a toothed wheel (20) arranged on the steering shaft (1) in a rotationally fixed manner. The aim of the invention is to provide an improved coupling between the electric motor (4) and the gear wheel (21) with reduced production complexity and cost. According to the invention this is achieved in that the coupling element has a torsionally elastic rod element (6) which is torsioinally softer than the motor shaft (40) and the gear wheel (21).