US Patent 7484798 Car seat

There is provided a car seat, including a seat body having a seat back and a headrest having a pair of legs for connecting the headrest to the seat back at the upper side; a load detecting section provided in the seat back, including a movable portion that moves in a predetermined direction when receiving a load from the seat front side; an elevating mechanism including a moving body that moves in a predetermined direction by interlocking with the movement of the movable portion, and a pair of interlocking members that respectively engage and interlocking with the moving body, one leg elevating due to the movement of one interlocking member, and the other leg elevating due to the movement of the other interlocking member; and a forward shifting section that shifts the headrest side of the pair of legs forward as the pair of legs elevates.