Grammer Ag

Thomas Burger

Erwin Haller

Konstantin Lorey

Johann Meier

Marco Hofmann

The invention relates to a vehicle seat with a height-adjustable seat frame which comprises at least two seat frame parts which can move relative to one another and at least one fluid spring, in particular an air spring, arranged on the seat frame parts for height adjustment purposes, with at least one control device which is provided for influencing the fluid spring and which comprises at least one valve device with control valves which is attached to the first seat frame part and is designed to control fluid flows for the fluid spring, and also a control element which is provided on a second seat frame part and is designed to actuate the control valves, so that a height adjustment and/or damping oscillatory movement of the vehicle seat is ensured, wherein the valve device comprises an internally cylindrical component with at least one rod element arranged displaceably therein as a control element, wherein at least one fluid intake and discharge opening of the rod element can selectively be assigned to one of the control elements by a relative displacement of the cylindrical component and the rod element with respect to one another.

Vehicle seat with slide valve

The invention relates to a vehicle seat comprising at least one gas spring () which damps vibration and adjusts the seat height, said gas spring being arranged between a seat frame () and a base frame (), and comprising a valve arrangement () for adjusting the pressure in the gas spring () and a compressor () assigned to the vehicle seat (), said compressor having a drive motor for feeding compressed gas to the gas spring (), wherein a belt roller device comprising a belt () rolled around an axle () is arranged between the seat frame () and the base frame (), the first end () of said belt being attached to a belt roller mechanism () arranged on the seat frame () and the second end () of said belt being attached to the base frame (), and a detector () which detects a belt rolling movement is attached to the seat frame (). Use is made of an electronic control unit () for evaluating belt rolling movement signals detected within a predefined time period () for determining a seat height profile within the time period () and for controlling the valve arrangement () and/or the compressor () such that automatic, time-delayed seat height re-adjustment takes place if the seat height profile () determined for the time period () lies out of a position of symmetry in relation to a predefinable mean seat height (). Also disclosed is a method for carrying out such automatic seat height adjustment.

Growing community of inventors

Nabburg, Germany

Thomas Burger