Motor vehicle seat, has valve arrangement releasing opening with common cross section in open position, so that blister is deaerated through opening, where common cross section is larger than another common cross section of another opening

摘要

The seat (2) has a backrest (4) with a cushion (22) that includes an air-filled blister (36). A valve arrangement releases an opening (38) with a common cross section, in an open position of the blister, so that the blister is aerated/deaerated through the opening. The arrangement is automatically brought from a closed position into another open position. The arrangement releases another opening (40) with another common cross section in the latter open position, so that the blister is deaerated through the opening (40), where the latter section is larger than the former section.