Locking device, in particular for a crash-active head restraint of a vehicle

摘要

A locking device is disclosed, such as for head restraint of a vehicle seat. The head restraint has a first subsection that may be displaced from a first position in a direction of displacement into a comfort position. Relative movement of a second subsection relative to the first subsection and/or relative to a third subsection is provided about a rotational axis substantially parallel to the direction of displacement. A blocking device and a sliding device are arranged between the first and second subsections and/or between the second and third subsections.

主权项

1. A locking device for a head restraint for a vehicle seat, comprising:
a first subsection, which may be displaced from a use position in a direction of displacement into a comfort position; and a second subsection rotatable relative to the first subsection, a third subsection, or any combination thereof, about a rotational axis substantially parallel to the direction of displacement, wherein both a blocking device and a sliding device are arranged between the first subsection and the second subsection, between the second subsection and the third subsection, or any combination thereof; and a spring configured to provide a force threshold, wherein the spring urges at least one subsection away from at least one other subsection in the direction of displacement to enable the sliding device to facilitate rotation of the at least one subsection and the at least one other subsection relative to one another, and the blocking device is configured to block rotation of the at least one subsection and the at least one other subsection relative to one another in at least one rotational direction in response to application of a first force greater than the force threshold in a direction counter to the direction of displacement, and to otherwise facilitate rotation of the at least one subsection and the at least one other subsection relative to one another.