SEAT BACK CUSHION ASSEMBLY AND VEHICLE SEATING UNIT (VERSIONS) Russian patent published in 2020 - IPC B60N2/22 B60N2/42 B60N2/64 B60N2/72 

FIELD: transport machine building.

SUBSTANCE: group of inventions relates to a seat back cushion assembly and versions of a vehicle seating unit. Seating unit comprises: carcass, seat, seat back and seat cushion assembly, which comprises: a plurality of closed base chambers, a plurality of finishing chambers, an adjustable seat backrest panel, a fixed base, a drive element, side rotary chambers. Closed base chambers have constant volume. Finishing chambers are located on base chambers and have variable volume. Finishing chambers are in communication with the pump. Adjustable seat backrest panel is located behind base chambers and is pivotally connected to carcass. Fixed base is located behind the seat backrest panel. Drive element is located between seat backrest panel and fixed base. Drive element is adjusted between unfolded and retracted positions. In the unfolded position, the seat backrest panel turns forward, and in the retracted position back, thus changing the angle of backrest deviation from the seat.

EFFECT: creation of seat with side turning chambers providing transverse flexibility of seat back surface relative to seat backrest panel.

20 cl, 16 dwg