Patent ID: 8979203
Filing Date: 2015-03-17
Classification: B60N

Abstract:
1. A head restraint assembly, comprising: a support for mounting the head restraint above a seat back; a bun assembly pivotally mounted on a head restraint support for movement in first and second directions relative to the head restraint support; and an adjustment mechanism disposed at least substantially within the bun assembly, the adjustment mechanism operative to permit (i) the selective pivotal movement of the bun assembly in either of the first and second directions and, as the bun assembly is moved in either of the first and second directions, (ii) the incremental positioning of the bun assembly in any of a plurality of predefined positions along a path of travel of the bun assembly in the first and second directions, wherein the adjustment mechanism comprises: (a) a plurality of stationary teeth provided on the head restraint support, the stationary teeth defining the plurality of predefined positions along the path of travel of the bun assembly in the first and second directions; (b) a toothed pawl member movably mounted at a first location within the bun assembly and moveable between an engaged position, in which one or more of the teeth of the pawl member are engaged with one or more of the stationary teeth, and a disengaged position, in which the teeth of the pawl member are disengaged from the stationary teeth; and (c) a link member pivotally mounted at a second location within the bun assembly for movement between first and second positions and biased to the first position thereof, the first position characterized in that the link member contacts the toothed pawl member to maintain the toothed pawl member in the engaged position thereof, and wherein, during movement of the link member into the second position, the link member contacts the toothed pawl member and moves the toothed pawl member into the disengaged position thereof; and (d) a selectively moveable actuator comprising a cam surface which acts to move the link member between the first and second positions thereof when the actuator is moved.