US 11,987,156 B2
Vehicle seat having a device for level regulation and level stabilization
Konstantin Lorey, Schmidgaden (DE); Konstantin Krivenkov, Amberg (DE); and Erwin Haller, Birgland (DE)
Assigned to GRAMMER AG, Ursensollen (DE)
Filed by GRAMMER AG, Ursensollen (DE)
Filed on Feb. 10, 2021, as Appl. No. 17/172,632.
Claims priority of application No. 102020103782.1 (DE), filed on Feb. 13, 2020.
Prior Publication US 2021/0253001 A1, Aug. 19, 2021
Int. Cl. B60N 2/50 (2006.01); B60N 2/52 (2006.01)
CPC B60N 2/501 (2013.01) [B60N 2/505 (2013.01); B60N 2/508 (2013.01); B60N 2/525 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A vehicle seat comprising a vehicle seat upper part on which a mass can be arranged, a vehicle seat lower part, and a device for level regulation and level stabilization of the vehicle seat upper part, the device having an air spring that spring loads a movement of the vehicle seat lower part and of the vehicle seat upper part relative to one another, wherein
the vehicle seat lower part and the vehicle seat upper part are arranged in a non-deflected state at a predeterminable first distance from one another and the air spring is fluidically connected to a volume of a working volume of an additional volume module via a first fluid connection,
wherein
the vehicle seat has a control unit, wherein the control unit decreases the volume of the working volume in the event of an increase in the first distance due to the relative movement such that a pressure in the air spring is adapted such that a second distance between the vehicle seat upper part and a reference surface that does not change in position is substantially unchanged, and to increase the volume of the working volume in the event of a decrease in the first distance due to the relative movement such that the pressure in the air spring is adapted such that the second distance between the vehicle seat upper part and the reference surface that does not change in position is substantially unchanged.