Patent ID: 7488039

Claim:
A backrest structure for a motor vehicle seat comprising: a backrest frame which has a front side facing the back of a seat user; a lordosis support mounted on the front side of the backrest frame for supporting the back of a seat user; and an adjusting device for adjusting the position of the lordosis support perpendicular to a plane defined by the backrest frame; wherein the adjusting device comprises at least one adjusting element in active connection with the lordosis support and at least one slider which is movable relative to the adjusting element whereby the at least one adjusting element and the at least one slider interact with one another so that when the slider is moved, the adjusting element is moved in a direction having a direction component perpendicular to the direction of movement of the slider and acts in the direction component on the lordosis support; and wherein the slider is movable along a direction which runs substantially perpendicular to a backrest longitudinal direction along which with a certain use of the backrest structure the spinal column of a seat user extends.