Vehicle head restraint

A head restraint for a vehicle seat includes a first subsection facing the occupant's head, and is displaceable due to application of a predetermined force. A third subsection includes a central hub portion that supports the second subsection. The second subsection is arranged between the first subsection and a third subsection, and is mounted to the central hub portion of the third section and the first second and third subsections are rotatably displaceable about an axis of rotation that is parallel to the direction of displacement (C). A blocking device includes a toothed portion complimentarily engaged with a spacer device on the third subsection and having a resilient member preventing engagement of the toothed portion by the spacer device when the first subsection is not subjected to the application of the predetermined force, and also controls movement of the first subsection counter to a direction of displacement.