Vehicle seat or vehicle cabin having a suspension apparatus and utility vehicle

Patent metadata

Field	Value
Publication number	US-2016200230-A1
Application number	US-201414915754-A
Country	US
Kind code	A1
Filing date	Sep 23, 2014
Priority date	Oct 1, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

The invention relates to a vehicle seat or to a vehicle cabin having a suspension apparatus comprising a top end part and a bottom end part, which can be deflected relative to the top end part, which are connected to each other in a spring-loaded manner by means of a suspension element, and having a dampening apparatus for dampening vibrations having effect on at least one of the two end parts wherein the dampening apparatus and a distance leveling apparatus for adjusting a distance between the top end part and the bottom end part have an acutator fluid element controlled by common pressure stages.

First claim

What is claimed is:

1 . A vehicle seat or vehicle cab comprising: a suspension device including an upper end part and a lower end part that is deflectable relative to the upper end part, which parts are resiliently interconnected by means of a suspension element, and having a damping device for damping vibrations acting on at least one of the two end parts wherein the damping device and a distance-adjusting device for adjusting a distance between the upper end part and the lower end part comprise a common actuator fluid element controlled by pressure stages.

2 . The vehicle seat or vehicle cab according to claim 1 , wherein the actuator fluid element is operatively connected to a controllable fluid-conveying device, which is in fluid connection with the pressure-stage chamber of the actuator fluid element such that various height adjustments of the upper end part can be carried out by controlling the power of the controllable fluid-conveying device.

3 . The vehicle seat or vehicle cab according to claim 1 , wherein the actuator fluid element is operatively connected to a controllable fluid-conveying device, which is in fluid connection with the pressure-stage chamber of the actuator fluid element such that the fluid can be conveyed out of the tension-stage chamber of the actuator fluid element and/or another fluid reservoir of the fluid-conveying system into the pressure-stage chamber.

4 . The vehicle seat or vehicle cab according to claim 1 , wherein the actuator fluid element is operatively connected to a flow-control valve element, which is in fluid connection with the actuator fluid element and a controllable fluid-conveying device such that the power of the pressure stage can be additionally modulated by means of this flow-control valve element.

5 . The vehicle seat or vehicle cab according to claim 4 , wherein the flow-control valve element is in fluid connection with the actuator fluid element and the controllable fluid-conveying device such that vibrations of one of the end parts can be isolated by means of the flow-control valve element.

6 . The vehicle seat or vehicle cab according to claim 4 , wherein the flow-control valve element is in fluid connection with the actuator fluid element and the controllable fluid-conveying device such that the power of the pressure stage can be additionally modulated by means of this flow-control valve element while not affecting the power of the fluid-conveying device.

7 . The vehicle seat or vehicle cab according to claim 2 , wherein a low-pressure connection of the fluid-conveying device is in fluid connection with the tension-stage chamber by means of a low-pressure line and a high-pressure connection of the fluid-conveying device is in fluid connection with the tension-stage chamber by means of a high-pressure line, the low-pressure line and the high-pressure line being fluidically interconnected by means of an electrically operable proportional flow control valve.

8 . The vehicle seat or vehicle cab according to claim 1 , characterised by an open-loop and/or closed-loop control device for adjusting a fluid-conveying device and/or a flow-control valve element depending on a load acting on the upper end part.

9 . The vehicle seat or vehicle cab according to claim 8 , wherein the open-loop and/or closed-loop control device comprises an acceleration-measuring sensor which is arranged on the face of the lower end part and is intended for detecting accelerations acting on the lower end part.

10 . The vehicle seat or vehicle cab according to claim 8 , wherein the open-loop and/or closed-loop control device comprises a travel-measuring sensor for detecting a distance and/or a distance variation between the upper and the lower end part.

11 . A utility motor vehicle comprising a vehicle seat and a vehicle cab, characterised by a vehicle seat and/or a vehicle cab according to claim 1 .

Assignees

• Grammer Ag

Inventors

• Haller Erwin

Classifications

• B60N2/502

  attached to the base of the seat (B60N2/504 takes precedence) · CPC title

• B60N2/522 Primary

  characterised by dampening means · CPC title

• B60G2202/24

  Fluid damper · CPC title

• B60G2600/182

  Active control means · CPC title

• B60N2/505

  Adjustable suspension including height adjustment · CPC title