Vehicle seat with a deformable, S-shaped backrest

摘要

The seat has a backrest (1) with frames and s-shaped rod units (6, 7) to form s-shaped backrest with shoulder and lumbar vertebra areas deformable in forward and backward directions. The units with its lower and upper ends are rotatably supported at the frames such that the units are pivotable around an imaginary axle extending in a backrest longitudinal direction. The units are relocatably supported at the frame in the direction.