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

FIELD: transport machine building.

SUBSTANCE: group of inventions relates to versions of a vehicle seat assembly and to a seat back cushion assembly. Seat assembly comprises: carcass, seat and seat back located on carcass and seat cushion assembly. Seat cushion assembly comprises: multiple closed base chambers, multiple finishing chambers, adjustable backrest support panel, fixed base and adjustable backward deflection chamber. Plurality of closed chambers of the base is located on the carcass. Chambers of base have constant volume of fluid medium located in them. Finishing chambers are located on chambers of base and have variable volume of fluid medium located in them. Finishing chambers are in communication with the fluid pump. Adjustable seat backrest support panel is located behind chambers of base and is pivotally connected to carcass. Fixed base is located behind the support panel. Adjustable backward deflection chamber is located between the support panel and the fixed base. Backward deflection chamber is adjusted between the inflated position, which turns the support panel forward, and the lowered position, which turns the support panel backwards.

EFFECT: creation of a device enabling to vary the seat back inclination angle by changing the volume of the air chambers in the back.

21 cl, 16 dwg