Patent ID: 8011726

Claim:
A vehicle seat comprising: a rectangular-shaped seat back frame having right and left side frames; a flexible plate member provided between the right and left side frames; a seat back cushion provided in front of the flexible plate member; a mechanism for pushing the seat back cushion to a front direction by forwardly protruding the flexible plate member that results from the flexible plate member being bent; a headrest for supporting a head of a seat occupant, wherein the headrest is forwardly movably connected to the right and left side frames; and a rear-end collision detecting plate disposed at a portion of the seat back frame behind the seat occupant and connected to the seat back frame via right and left link members, wherein the rear-end collision detecting plate detects rearward movement of the seat occupant; wherein: each end portion of the rear-end collision detecting plate extends to a respective outer side of an end of the flexible plate member and is connected to a lower end portion of a respective link member; the flexible plate member is disposed anterior to the rear-end collision detecting plate; an upper end of the flexible plate member is disposed above an upper end of the rear-end collision detecting plate; and all of the rear-end collision detecting plate is positioned within a region between the upper end of the flexible plate member and a maximum forward portion of a curve of the flexible plate member formed when the flexible plate member is bent.