Arrangement for electrically locking the steering shaft of a steering device

摘要

The invention relates to an arrangement for electrically locking the steering shaft (2; 31) of a motor vehicle, having a housing (4) and a first electric motor (5) which is arranged in the housing and has an actuator (6) connected downstream, for displacing a blocking element (7; 36) which is arranged so that it can be displaced from its unlocked position into a locked position. In order to achieve, firstly, short unlocking times for the blocking element (7; 36) and, secondly, a space-saving construction of the arrangement (1), the invention proposes that the actuator (6) used be a spindle drive, with a driver (11) with internal screw thread (11) arranged on the threaded spindle (8), which driver can be displaced in linear fashion, engages in the screw thread (13) of the threaded spindle (8) and, on its side which is remote from the threaded spindle (8), has a seat (14) for the blocking element (7; 36). Moreover, the arrangement (1) comprises an adapter part (15) which is releasably connected to the housing (4), can likewise be connected to the steering device and is designed in such a manner that, in the event of the steering shaft (2; 31) being twisted violently in the locked position of the blocking element (7; 36), it absorbs the forces acting on this element.