VEHICLE CHAIR FRAME STRUCTURE

摘要

A vehicle chair frame structure (10) comprising a seat cushion frame (20) pivoted to a seat bottom support (30) and a backrest frame (40) about respective forward and rearward horizontal transverse axes (A, B). The backrest frame (40) comprises a resiliently compressible extension (46) pivoted to the seat bottom support (30) about a third horizontal transverse axis (C) and serving both as a seat suspension spring and a backrest frame support.