Air spring for a vehicle seat, and vehicle seat comprising such an air spring

• US 7,934,708 B2
• Filed: 12/18/2007
• Issued: 05/03/2011
• Est. Priority Date: 12/18/2006
• 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): Williams; Melanie Torres
• Application Number:
  US11/959,245
• Publication Number:
  US 20080150202A1
• Time in Patent Office: 1,232 Days
• Field of Search: 267/131, 267/122, 267/34.11, 267/67.19, 267/64.27, 267/64.28
• US Class Current: 267/131
• CPC Class Codes: B60G 11/28 characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
• CPC Class Codes: B60G 17/0485 the springs being pneumatic springs with a flexible wall, e.g. with levelling valves
• CPC Class Codes: B60G 17/0521 the spring having a flexible wall
• CPC Class Codes: B60G 17/0523 Regulating distributors or valves for pneumatic springs
• CPC Class Codes: B60G 2206/424 Plunger or top retainer construction for bellows or rolling lobe type air springs
• CPC Class Codes: F16F 9/02 using gas only or vacuum F16F9/006 takes precedence
• CPC Class Codes: F16F 9/43 Filling or drainage arrangements, e.g. for supply of gas filling vessels with, or discharging from vessels, compressed, liquefied, or solidified gases F17C
• CPC Class Codes: F16F 9/462 Rotary actuation means

Abstract

An air spring for a vehicle seat. The air spring includes a plurality of air spring components which delimit at least one air spring chamber. The air spring forms an intake air connection and a discharged air connection for controlling the height and/or level of the vehicle seat, wherein the air spring furthermore has, for controlling the height and/or level of the vehicle seat, a valve device which is integrated in the air spring or in at least one air spring component.

Claims

1. An air spring for a vehicle seat, the air spring comprising:

a plurality of air spring components configured to delimit at least one air spring chamber;

an intake air connection;

a discharged air connection for air flow into a piston chamber, thereby controlling one of the height or level of the vehicle seat; and

a valve device integrated in one of the air spring or the plurality of air spring components for controlling one of the height or level of the vehicle seat,

wherein the air spring component forms a through-channel, in which a height control roller extends.

2. The air spring according to claim 1, wherein the height control roller is a hollow cylinder, further comprising a level control roller configured to extend inside the height control roller.

3. The air spring according to claim 1, wherein the through-channel extends transversely, perpendicular to the central axis of one of the intake air connection or the discharged air connection.

4. The air spring according to claim 2, wherein the through-channel extends transversely, perpendicular to the central axis of one of the intake air connection or the discharged air connection.

5. The air spring according to claim 3, further comprising a free wheel integrated with the valve device.

6. The air spring according to claim 4, further comprising a free wheel integrated with the valve device.

7. The air spring according to claim 5, further comprising a housing, wherein the free wheel is external to the housing.

8. The air spring according to claim 6, further comprising a housing, wherein the free wheel is external to the housing.

9. A vehicle seat with a sitting area, the seat comprising:

an air spring comprising;

a plurality of air spring components configured to delimit at least one air spring chamber;

an intake air connection;

a discharged air connection for controlling one of the height or level of the vehicle seat; and

a valve device integrated in one of the air spring or the plurality of air spring components for controlling one of the height or level of the vehicle seat,

wherein the air spring component forms a through-channel, in which a height control roller extends.