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

• US 9,937,832 B2
• Filed: 09/23/2014
• Issued: 04/10/2018
• Est. Priority Date: 10/01/2013
• Status: Active Grant

• Current Assignee: Grammer AG (Ningbo Jifeng Auto Parts Co.,Ltd.)
• Original Assignee: Grammer AG (Ningbo Jifeng Auto Parts Co.,Ltd.)
• Inventors: Haller, Erwin
• Primary Examiner(s): Dayoan, D Glenn
• Assistant Examiner(s): Westbrook, Sunsurraye
• Application Number:
  US14/915,754
• Publication Number:
  US 20160200230A1
• Time in Patent Office: 1,295 Days
• Field of Search: 2961907, 29619008, 296 6501, 296 681, 297 6416, 2973441, 297383, 29721612, 297409, 297406, 29721611, 280124157, 280 5515, 280 5519, 280 6153, 180 8912, 180 8913
• CPC Class Codes: B60G 2202/152 Pneumatic spring
• CPC Class Codes: B60G 2202/24 Fluid damper
• CPC Class Codes: B60G 2202/414 using electrohydraulic valves
• CPC Class Codes: B60G 2202/416 using a pump, e.g. in the line connecting the lower chamber to the upper chamber of the actuator
• CPC Class Codes: B60G 2600/182 Active control means
• CPC Class Codes: B60G 99/002 Suspension details of the suspension of the vehicle body on the vehicle chassis
• CPC Class Codes: B60N 2/501 actively controlled suspension, e.g. electronic control
• CPC Class Codes: B60N 2/502 attached to the base of the seat B60N2/504 takes precedence
• CPC Class Codes: B60N 2/505 Adjustable suspension including height adjustment
• CPC Class Codes: B60N 2/508 Scissors-like structure
• CPC Class Codes: B60N 2/522 characterised by dampening means
• CPC Class Codes: B60N 2/527 using liquids

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 actuator fluid element controlled by common pressure stages.

Claims

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, and wherein an open-loop and/or closed-loop control device is provided for adjusting a fluid-conveying device and/or a flow-control valve element depending on a load acting on the upper end part.

2. The vehicle seat or vehicle cab according to claim 1, 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.

3. The vehicle seat or vehicle cab according to claim 1, 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.

4. The vehicle seat or vehicle cab according to claim 1, wherein the actuator fluid element is operatively connected to the fluid-conveying device, which is in fluid connection with a 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.

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

6. 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 the fluid-conveying device such that the power of the pressure stage can be additionally modulated by means of this flow-control valve element.

7. The vehicle seat or vehicle cab according to claim 6, 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.

8. The vehicle seat or vehicle cab according to claim 6, 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.

9. The vehicle seat or vehicle cab according to claim 4, wherein a low-pressure connection of the fluid-conveying device is in fluid connection with a 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.