Vehicle seat having a pivotable backrest and a seat part height adjustment independent of backrest inclination

Claim 1

A vehicle seat, especially a motor vehicle seat having a freely pivotable backrest and a cushion support of a seat part, said cushion support having a rear end, the vehicle seat adapted to avoid cushion pressure between the backrest and the cushion support, comprising: an adjustment device for adjustably supporting said cushion support relative to the freely pivotable backrest, said adjustable support provided for adjusting height of said cushion support independent of position of the backrest, said adjustment device provided for raising said cushion support rear end for a higher seat level and for lowering said cushion support rear end for a lower seat level; said adjustment device including means for, in at least positions of the cushion support above its lowermost position, moving the cushion support no later than the beginning of a free pivoting motion of the backrest from its starting position toward a position selected from the group of positions consisting of a front position and a downward position at least in the region of its rear end section, and for moving said cushion support back into its starting position no earlier than while the backrest pivots back into its starting position, said moving of said cushion support into the selected position occurring as a result of height adjustment of said cushion support, and including two rockers on each side, said two rockers including a front rocker and a rear rocker, each of said rockers having a lower end area and an upper end area and being mounted in the lower end area so as to be pivotable about an axle which runs in a direction transverse to the seat, and being hinged to the cushion support in the upper end area, and being connected together by means of a coupler to form a lever gear drive having four joints.