Patent ID: 8047611

Claim:
A vehicle seat comprising a seatback and a headrest, said headrest comprising: a headrest main body; first and second headrest stays for supporting said headrest main body; and first and second headrest bushings into which said first and second headrest stays are inserted respectively; said first headrest bushing having a disengagement preventive mechanism comprising: a first lock mechanism for preventing disengagement of said first headrest stay from said first headrest bushing when locked; first unlock mechanism having a first button for unlocking said first lock mechanism to thereby allow disengagement of said first headrest stay from said first headrest bushing, wherein said first button is movable to a first position and a second position; and a first housing for accommodating said first lock mechanism, wherein said first housing has a first opening for allowing direct manipulation of said first button; said second headrest bushing comprising: second lock mechanism for preventing said second headrest stay from moving downward toward said seatback when locked; and a second unlock mechanism having a second button for unlocking said second lock mechanism to thereby allow movement of said headrest stay downward toward said seatback; and a second housing for accommodating said second lock mechanism, wherein said second housing has a second opening for allowing direct manipulation of said second button; wherein a pressing outside surface of said first button in said first position corresponds at least to an outside surface of said first opening of said first housing or further inward in a pressing direction away from said outside surface of said first opening, wherein said pressing outside surface of said first button in said second position is further inward than in said first position in said pressing direction away from said outside surface of said first opening, and wherein a pressing outside surface of said second button protrudes outside of an outside surface of said second opening of said second housing.