Grammer Ag

Konstantin Lorey

Konstantin Krivenkov

Erwin Haller

Michael Klemm

Gerhard Delling

Johann Deml

Florian Schanderl

Joachim Pelka

Hubert Wittmann

Thomas Burger

The invention relates to a seat arrangement for a vehicle, in particular for a fork-lift truck, the seat arrangement having a first spring part, on which a vehicle seat is arranged, and a second spring part, which can be moved relative to the first spring part by means of a connecting unit and is connected to the body, the relative movement of the first spring part to the second spring part being sprung by means of a spring unit, the spring unit and the connecting unit being arranged laterally on the first spring part.

Suspension device

A device for level regulation and level stabilization of a vehicle seat upper part. The device includes 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, the vehicle seat lower part and the vehicle seat upper part are arranged in a non-deflected state at a predeterminable distance from one another. The air spring is fluidically connected to a working volume of an additional volume module. A control unit decreases the volume of the working volume in the event of an increase in the distance and increases the volume of the working volume in the event of a decrease in the distance such that the pressure in the air spring can be changed such that the distance between the vehicle seat upper part and a reference surface is substantially unchanged.

Vehicle seat having a device for level regulation and level stabilization

The invention relates to a vehicle seat, the vehicle seat having a seat part frame and a seat depth adjustment with a seat depth adjustment element, the seat depth adjustment element being displaceable relative to the seat part frame, wherein a first connecting element is provided and designed to connect the seat depth adjustment element to the seat part frame and to guide the seat depth adjustment element relative to the seat part frame.

Vehicle seat with seat depth adjustment

A vehicle seat is provided that has a seat part frame and a seat back adjustment with a seat depth adjustment element, where the seat back adjustment element can be displaced relative to the seat part frame, where a locking device locks a displacement of the seat depth adjustment element relative to the seat part frame by engaging at least one recess of the seat part frame, where the locking device includes a locking unit which has a first end on the seat depth adjustment element, and a second end, which can be deflected, the second end engaging the locking element in the recess in a non-deflected position and the locking element being separated from the recess in a deflected position and a sliding carriage element that deflects the second end of the locking unit when the sliding carriage element is displaced relative to the locking unit.

The invention relates to a system for automatic tilt compensation within a vehicle, comprising a first assembly and a second assembly which is pivotally connected to the first assembly by means of a first axis, wherein the system further comprises a pendulum arrangement which is pivotally connected to the second assembly by means of a second axis arranged above the first axis and at an upper end of the pendulum arrangement, wherein a deflection of the pendulum arrangement relative to the second assembly can be detected.

System for automatic tilt compensation within a vehicle

The invention relates to a vehicle seat with at least one laterally positioned operating device for operating the vehicle seat functions and/or vehicle functions and an adjustment device for adjusting a vertical position and/or an inclination of the at least one operating device with respect to a rest of the vehicle seat, wherein the adjustment device comprises a rotational axis extending in the seat width direction and a shaft which is connected to the operating device, positioned at a distance from the rotational axis and rotatable together with the operating device about the rotational axis, wherein the adjustment of the vertical position and/or of the inclination of the operating device is feasible by means of a rotational movement of a spindle element which is in operative contact with the shaft, wherein a central axis of the spindle element is perpendicular to a central axis of the shaft.

Vehicle seat with adjustment device

Vehicle seat comprising an upper seat part and a lower seat part, the upper seat part and the lower seat part being connected by a scissor-action frame, and comprising a damper, the scissor-action frame comprising a first scissor arm and a second scissor arm, the first scissor arm and the second scissor arm being mounted so as to be rotatable about a common swivel axis, a first end of the damper being rotatably connected to the first scissor arm, a first lever element and a second lever element being provided, a first end of the first lever element being rotatably connected to the first scissor arm and a first end of the second lever element being rotatably connected to the second scissor arm and a second end of the damper being rotatably connected to a second end of the first lever element and to a second end of the second lever element.

Vehicle seat comprising adjustable damper

Roller guide comprising at least one guide rail, which has at least one first and one second planar region, and comprising a first and a second roller, which are each in contact with the guide rail and roll thereon, wherein the first and the second roller are mounted so that they are rotatable about a common axis of rotation and are formed rotationally-symmetrically about the axis of rotation and a radius of the first roller is smaller than a radius of the second roller, the first roller has a first circular-segment-shaped surface rolling region and the second roller has a second circular-segment-shaped surface rolling region and a centre point of the first surface rolling region and a centre point of the second surface rolling region are arranged on the axis of rotation.

Roller guide

A vehicle seat comprising a device for levelling the vehicle seat is provided. The vehicle seat including an upper seat element, which can be moved relative to a lower seat element by a first air spring and on which a mass can be arranged The lower and the upper seat element are arranged at a predetermined distance from one another, and the first air spring is fluidically connected to an additional volume of an additional volume module by a first fluid connection. The internal pressure of the first air spring is controllable by the additional volume module. The device comprises a limited auxiliary volume, which is fluidically coupled to the additional volume by means of a fluid conveying unit and a second fluid connection, it being possible, when the distance changes between said seat elements due to a shift in weight of the mass on the upper seat element, to change the internal pressure of the additional volume and, indirectly, of the first air spring by a fluid being conveyed between the auxiliary volume and the additional volume by means of the fluid conveying unit in order to compensate for the change in distance.

Vehicle seat comprising an additional volume for levelling and stabilization

Suspension device for a vehicle seat, comprising an upper suspension portion and a lower suspension portion, which are interconnected by a first swivel connector and a second swivel connector, and the first and the second swivel connector are pivoted in each case about a swivel pin in the case of an oscillating movement of the upper suspension portion relative to the lower suspension portion, wherein a first toothed wheel element which is rotatable about a first axis of rotation is arranged on the first swivel connector for adjusting a position of a first spring unit, by means of which a spring force and a spring rate of the suspension device can be changed, the first toothed wheel element being in operative contact with a second toothed wheel element which is rotatable about a second axis of rotation.

Vehicle seat comprising a vehicle seat top part, a vehicle seat bottom part and a guide device for guiding the vehicle seat top part with respect to the vehicle seat bottom part when the vehicle seat top part is deflected relative to the vehicle seat bottom part. The guide device includes a first assembly having a first lever element, a second lever element and a lever element connector. The first lever element and the second lever element are arranged so as to extend forwards in a longitudinal direction. The guide device also includes a second assembly having a third lever element, a fourth lever element and the lever element connector. The third lever element and the fourth lever element are arranged so as to extend backwards in a longitudinal direction. The guide device further includes a stabilization device having a fifth lever element, a sixth lever element and a seventh lever element, which are pivotally connected by means of a shared pivot axis. The fifth lever element is pivotally connected to the vehicle seat top part, the sixth lever element is pivotally connected to the vehicle seat bottom part and the seventh lever element is pivotally connected to the lever element connector.

Vehicle seat comprising a guide device

The invention relates to a suspension device, in particular for a vehicle seat, comprising an upper suspension part and a lower suspension part, which can be connected to one another by a first swivelling connector and a second swivelling connector, wherein a first spring unit can be connected in a first end region on the one hand by means of an adjusting device to the first swivelling connector and can be connected in a second end region on the other hand to the lower suspension part, wherein by means of the adjusting device the position of the first spring unit can be adjusted in order to adjust the spring force and the spring rate of the suspension device.

Suspension device for a vehicle seat, comprising an upper suspension portion and a lower suspension portion, said suspension portions being connected to one another by a first swivel connector and a second swivel connector, said first swivel connector being arranged on the lower suspension portion in such a way that it can swivel about a first swivel pin, and said second swivel connector being arranged on the lower suspension portion in such a way that it can swivel about a second swivel pin, a first tension spring and a second tension spring being respectively connected to the first swivel connector by means of a first end region and to the upper suspension portion or the lower suspension portion by means of a second end region, wherein the first end region of the first tension spring is attached to the first swivel connector at a first distance therefrom, and the first end region of the second tension spring is attached to the first swivel connector at a second distance therefrom, the length of the first distance being variable.

A pressure reducer, comprising an outer cylinder with a first air supply connector on a first end side of the outer cylinder and a second air supply connector on a second end side of the outer cylinder is provided. A piston can be guided movably in the outer cylinder. A first air chamber is arranged between the first air supply connector of the outer cylinder and the first front surface of the piston, and a second air chamber is arranged between the second air supply connector of the outer cylinder and a second front surface of the piston. The surface areas of the two front surfaces of the piston are of different size. The pressure reducer is suitable for reducing a second air pressure which prevails in the second air chamber in a pulsed manner proportionally to a first air pressure which prevails in the first air chamber, by a first air connection.

Pressure reducer

Vehicle seat which is arranged on a vehicle body, is movable relative to the vehicle body and comprises at least one spring apparatus and/or at least one damping apparatus for displacing and for absorbing oscillations in the vertical and/or horizontal direction, and at least one seat stabilization apparatus arranged on the vehicle seat for stabilizing the vehicle seat in the vertical and/or horizontal direction, wherein the seat stabilization apparatus comprises at least one rotary element which is mounted so as to rotate about a first rotational axis, can rotate at a rotational frequency and by means of which a torque can be generated by a force acting from outside on the vehicle seat and on the rotational pulse generated by the rotary element, which torque counteracts a rotational movement of the vehicle seat and/or the vehicle body generated by the force about an actual and/or imaginary second rotational axis.

Growing community of inventors

Schmidgaden, Germany

Konstantin Lorey