Patent ID: 8235467
Filing Date: 2012-08-07
Classification: B60N

Abstract:
1. A vehicle seat comprising: a square seat back frame having a pair of side frames; upper and lower seat springs mounted between the side frames; a single plate-like flexible cushion plate having a back surface mounted on the seat springs; a seat back cushion provided on a front side of the cushion plate; a single plate-like flexible auxiliary plate provided between the seat back cushion and the cushion plate and mounted on the cushion plate, the auxiliary plate having an elasticity such that when the auxiliary plate is deformed into a curved shape, a portion of the auxiliary plate projects forward, thus causing the auxiliary plate to push out the seat back cushion forward; wherein the cushion plate includes an upper portion located higher than the lower seat spring and a lower portion located lower than the lower seat spring; and wherein the lower portion has an elastic force such that when the lower portion receives, through the seat back cushion, pressure from a person properly seated on the seat, the lower portion can move backward by a greater distance than the distance of rearward movement of the lower seat spring.