Device for unlocking and / or locking and for determining the position of a steering column

Abstract

Device (3, 4', 7, 10, 12, 13) for unlocking and / or locking and for adjusting the position of a steering column (101) of a motor vehicle (K), wherein the unlocking and / or locking of the steering column (101) is automatic and the adjustment of the steering column (101) to a desired position can be carried out manually, wherein the steering column (101) is held at least longitudinally movable in a housing (102) and at least one electric motor-free actuator (103) is provided by which a movement and / or change in size of at least one component (106, 109, 112, 114) effecting the unlocking and / or locking of the steering column (101) can be brought about, characterized in that the component (106, 112) is designed as an elastic bushing (112) or as a bushing (106) made of auxetic material and is located between the steering column (101) and the housing (102) is arranged, wherein the socket (106,112) radially surrounds the steering column (101) and can be compressed or relaxed by the actuator (103), or that a body-mounted housing (126) encompasses the housing (102) of the steering column (101) from the outside and the actuator (104, 129) is arranged inside the body-mounted housing (126), wherein a tension spring (127) pulls the body-mounted housing (126) together and thereby simultaneously compresses the housing (102) of the steering column (101), and wherein the actuator (104, 128; 129) can be controlled in such a way that a force opposing the spring force of the tension spring (127) is generated.

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