Patent ID: 7537283

Claim:
An automobile seat provided with a seatback having a metal-made seatback frame of a substantially quadrilateral shape, said seatback frame comprising a pair of spaced apart left and right side frame sections, an upper frame section interconnecting upper end portions of said side frame sections, and a lower frame section interconnecting lower end portions of said side frame sections; said lower frame section comprising a horizontally extending body arranged between said lower end portions of said side frame sections, side bracket portions provided at left and right ends of said horizontally extending body so as to project forward from said horizontally extending body, said side bracket portions being applied and fixed to said lower end portions of said side frame sections, and means to facilitate rearward deformation of said seatback in the event of a car crash in order to absorb impact caused by the car crash; said means comprising a recess portion which extends along said horizontally extending body and around said side bracket portions, said recess portion being formed into a semi-circular shape in cross-section with an opening thereof facing rearward of said seatback, so that when said automobile seat is subjected to the impact by the car crash and a weight of an occupant on said automobile seat is then applied to said seatback, said opening of said recess is closed, thereby causing said seatback to be deformed rearward in such a manner that the impact can be absorbed by the rearward deformation of said seat back.