Patent ID: 7690727
Filing Date: 2010-04-06
Classification: B60N

Abstract:
1. 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; 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; wherein the at least one slider interacts with the at least one adjusting element through a rotationally symmetrical element whereby the rotationally symmetrical element during movement of the slider rolls down along a track face of the slider; wherein two sliders are provided which are each movable relative to an adjusting element; and wherein the two sliders are movable in opposite directions relative to each other.