Foldable head rest assembly

The invention relates to a foldable head rest assembly (1) for a vehicle comprising a bracket (3), an armature (5) for carrying a head rest, a locking mechanism (33) and a release mechanism, wherein the armature comprises a first arm, which is mounted to the bracket by an armature shaft (17) and pivotable with respect to the bracket about a first axis (18) between an upright position and a folded position, wherein the first axis is defined by the armature shaft, wherein the locking mechanism (33) prevents pivoting of the armature from the upright position to the folded position and wherein the release mechanism (49) can move the locking mechanism from a locked position to an unlocked position, characterized in that an abutment surface (34) of the first arm abuts a locking shaft (31) in the upright position, the locking shaft extending along a second axis that extends parallel to and spaced apart from the first axis, and the release mechanism is mounted to the locking shaft (31) and pivotable about the second axis (32).