Steering column arrangement for a motor vehicle
AssigneeDr. Ing. h.c.F. Porsche Aktiengesellschaft
InventorsWilhelm Frasch, Norbert Schote
Life of this patent
Estimating the term…
Abstract
A steering column arrangement includes a steering spindle, which rotates about its longitudinal axis and serves to transfer a torque, generated by a steering wheel, to a steering gear, and a blocking device, which prevents the rotational motion of the steering spindle, especially in the event of a collision. The blocking device includes a stator, which is stationary in relation to the rotational motion of the steering spindle, and against which a blocking element is mounted in a relatively moveable manner. To prevent, in a reliable manner, an undesired twisting of the steering wheel, especially in the event of a collision, the blocking element is moveable into a locked position in a radial direction toward the steering spindle.
Claims15
A steering column arrangement for a motor vehicle for locking a steering column in response to a collision, comprising:
- a steering spindle rotatable about its longitudinal axis and serving to transfer a torque generated by a steering wheel to a steering gear;
- a blocking device for preventing rotational movement of the steering spindle about the longitudinal axis, the blocking device comprising:
- a stator arranged stationary so that the steering spindle is rotatable relative to the stator, a blocking element being mounted for movement relative to the stator toward and away from the steering spindle and means for generating a prestress for continuously biasing the blocking element away from the steering spindle;
- and
- means for generating an overpressure adjacent the blocking element for moving the blocking element relative to the stator against forces exerted by the means for generating a prestress and into a locked position on the steering spindle.
Dependencies are inferred from the claim text.