Drive unit, in particular for a wiper system for the headlamps of motor vehicles

摘要

A drive unit, which is used in particular for a wiper system for the headlamps of motor vehicles, has a housing, a switching element which cooperates with a switching contact, a ratchet wheel to which the switching element is securely connected and which can be driven by a driving motor in a stepwise manner via a reduction gear, and a detent element which engages in the ratchet wheel and can be deflected in a spring-elastic manner. For a detent action which is as wear-free as possible, the detent element can be deflected in a plane which is perpendicular to the axis of the ratchet wheel.