VEHICLE SEAT AND COMMERCIAL MOTOR VEHICLE WITH AT LEAST ONE VEHICLE SEAT

The invention relates to a vehicle seat (1, 2) with a seat part, with a backrest (4) and with a bearing device (20) for bearing a backrest extension part (8), in particular a backrest upper part (7), relative to a backrest lower part (6) of the backrest (4) of the vehicle seat (1, 2), wherein the bearing device (20) has a plurality of sliding bearing bushing units (25, 26, 27) for bearing elongated traverse elements (30, 31) of the backrest extension part (8) along sliding axes (37, 38) arranged transversely to the backrest (4), wherein the sliding bearing bushing units (25, 26, 27) are composed of identically constructed asymmetrical sliding bushing parts (50, 51).