Head restraint assembly

A head restraint assembly for a vehicle seat, the head restraint assembly comprising:

• a housing;
• a movable head rest portion which defines at least a part of a rest surface for a seat user's head;
• and
• a linkage mechanism pivotally mounting the movable head rest portion to the housing,
• wherein the linkage mechanism is configured to allow movement of the movable head rest portion to enable an angle of the rest surface to be adjusted relative to the housing,
• wherein the linkage mechanism includes first and second linkage bars,
• wherein the first linkage bar is pivotally coupled to the housing via a sliding pin and the sliding pin is configured to engage a runner within the housing,
• wherein the runner comprises at least a first recess configured to receive the sliding pin to secure the head rest portion in a first deployed position and a second recess configured to receive the sliding pin to secure the head rest portion in a second deployed position,
• wherein the first linkage bar is pivotally mounted to the movable head rest portion at a forward end of the first linkage bar and the sliding pin is engaged with the runner at a rearward end of the first linkage bar,
• wherein the second linkage bar is pivotally mounted to the movable head rest portion at a forward end of the second linkage bar to define a pivot axis of the movable head rest portion,
• wherein the second linkage bar is mounted to the housing at a rearward end of the second linkage bar,
• wherein the first and second linkage bars are pivotally coupled via a connecting pin,
• wherein the connecting pin is received within an aperture provided in the first or second linkage bar,
• wherein the aperture comprises a slot and the slot is configured to guide movement of the connecting pin along a length of the first linkage bar or the second linkage bar as the head rest portion is adjusted relative to the housing,
• wherein the movable head rest portion is pivotal about the pivot axis by causing a first end of the movable head rest portion to move toward or away from the housing, and
• wherein the linkage mechanism is configured such that the pivot axis moves away from the housing when the first end of the movable head rest portion is moved away from the housing.