Patent ID: 9669864
Date: 2017-06-06
CPC Classifications: B62D,G05G,Y10T

Claim:
1. A steering system comprising a steering shaft and a brake mechanism movable between a released position and an engaged position for angularly locking the steering shaft, wherein the brake mechanism comprises an override such that a non-destructive external torque applied to the steering shaft above a given torque threshold when the brake mechanism is in the engaged position results in a rotation of the steering shaft, wherein the brake mechanism comprises: a friction element non-rotatable relative to the steering shaft; a first locking element provided with an annular friction face that faces the friction element; at least one biasing spring for biasing the first locking element into frictional engagement with the friction element and for applying a predetermined biasing force to the first locking element in the engaged position, the predetermined biasing force being such that the first locking element starts slipping, relative to the friction element, upon application of the non-destructive external torque greater than the torque threshold; and a second locking element and an actuator for operably engaging second locking element with the first locking element for angularly locking the first locking element in the engaged position.