Patent ID: 7832806

Claim:
A seat apparatus for a vehicle, comprising: a seat cushion frame; a lower bracket fixed to the seat cushion frame; a seatback frame attached to the lower bracket through a reclining mechanism so as to be pivotally supported relative to the lower bracket; two fastening portions fastening the lower bracket and the seat cushion frame; a lower bracket engaging portion in the lower bracket, the lower bracket engaging portion including a first side surface and a second side surface at both sides of the lower bracket engaging portion in a longitudinal direction of the seat apparatus; a seat cushion frame engaging portion in the seat cushion frame, the seat cushion frame engaging portion including a third side surface and a fourth side surface at both sides of the seat cushion frame engaging portion in the longitudinal direction of the seat apparatus; the third side surface of the seat cushion frame engaging portion and the first side surface of the lower bracket engaging portion engaging one another, and the fourth side surface of the seat cushion frame engaging portion and the second side surface of the lower bracket engaging portion engaging one another; one of the lower bracket engaging portion and the seat cushion frame engaging portion being a through hole, and the other of the lower bracket engaging portion and the seat cushion frame engaging portion being positioned in the through hole; and the lower bracket engaging portion and the seat cushion frame engaging portion being arranged between the two fastening portions.