FOUR-WAY RATCHETING VEHICLE HEAD RESTRAINT ASSEMBLY

A head restraint assembly includes a base, a head restraint having a housing, and an internal cavity at least partially defined by the housing. Also included is a lock mechanism assembly disposed within the internal cavity, the lock mechanism assembly comprising a first lock member and a second lock member, the first lock member including a plurality of teeth and the second lock member including a single lock tooth, wherein the plurality of teeth and the single lock tooth are engageable with each other and selectively rotatable with respect to each other. Further included is an actuator arm engaged with the second lock member, actuation of the actuator arm required to selectively permit rotation of the second lock member relative to the first lock member in one direction, wherein disengagement of the plurality of teeth and the single lock tooth is not required to rotate in another direction.