Patent ID: 7066545
Filing Date: 2006-06-27
Classification: B60N

Abstract:
1. A headrest device comprising: a headrest provided over a seatback of a seat; a sliding means for slidably adjusting the seat in back and forth directions; a position-adjusting means for adjusting a position of the headrest; and a connecting mechanism connecting the sliding means and the position-adjusting means, the connecting mechanism operating the position-adjusting means in conjunction with operation of the sliding means; wherein the connecting mechanism moves in a first direction when the sliding means moves forward, and the connecting mechanism moves in a second direction when the sliding means moves backward; the position-adjusting means includes a driving portion operated by the connecting mechanism, and a driven portion moved in conjunction with the headrest; and transmission of a driving force from the driving portion is selectively inputted into and cut off from the driven portion; and further wherein the driving portion includes a pinion gear; the driven portion includes a rack gear selectively engaged with the pinion gear; and the driving force is cut off by separating the pinion gear from the rack gear.