Closure device, use of a closure device, method for sealing a fluid channel, and air spring system

Patent metadata

Field	Value
Publication number	US-11353082-B2
Application number	US-201816611133-A
Country	US
Kind code	B2
Filing date	May 8, 2018
Priority date	May 8, 2017
Publication date	Jun 7, 2022
Grant date	Jun 7, 2022

Abstract

A closure device for an air spring system that includes an auxiliary vessel and an air spring device attachable to a link for an air spring system of a utility vehicle, wherein the closure device, in the installed state, seals off a fluid channel for gas exchange between the air spring device and the auxiliary vessel.

First claim

The invention claimed is:

1. A use of a closure device with an air spring system, which has an auxiliary vessel and an air spring device configured to attach to a link, where in the event of a malfunction of the auxiliary vessel and/or of the air spring device which includes an air leak within the air spring system, the closure device seals off a fluid channel for gas exchange between the air spring device and the auxiliary vessel when the closure vessel is in an installed state, wherein the closure device is removable; and
wherein the closure device at least one of comprises a bolt which seals off the air spring device by of one end of the bolt and is supported on the auxiliary vessel by another end of the bolt when in the installed state; and/or the closure device is configured such that the closure device has a first cross section in a section plane when the closure device is in a first state, and the closure device has a second cross section in the section plane enlarged in relation to the first cross section when in a second state, and the closure device comprises a deformable filling element and a fixing element wherein the filling element is transferred by the fixing element from the first state into the second state; and/or the closure device comprises a covering element that includes at least one of a closure cap and a plug, which is arranged, at an air spring device side, on an opening of the fluid channel between the air spring device and the auxiliary vessel.

2. The use as claimed in claim 1 , wherein the closure device, in the installed state, is arranged in an interface region, in which the air spring device is attached to the link.

3. The use as claimed in claim 2 , wherein the closure device, in the installed state, is fixable via positively locking and/or frictionally locking to the auxiliary vessel, to the link and/or to the air spring device.

4. The use as claimed in claim 3 , wherein the closure device, in the installed state, at least partially fills the fluid channel.

5. The use as claimed in claim 4 , wherein the closure device is configured to be fixed by the deformable filling element.

6. The use as claimed in claim 5 , wherein a cross section of the closure device is configured to change at least in certain regions.

7. The use as claimed in claim 1 , wherein the closure device, in the installed state, is fixable via positively locking and/or frictionally locking to the auxiliary vessel, to the link and/or to the air spring device.

8. The use as claimed in claim 1 , wherein the closure device, in the installed state, at least partially fills the fluid channel.

9. The use as claimed in claim 1 , wherein a cross section of the closure device is configured to change at least in certain regions.

10. A closure device configured for use with an air spring system having an auxiliary vessel and an air spring device configured to attach to a link, where in the event of a malfunction of the auxiliary vessel and/or of the air spring device the closure device seals off a fluid channel for gas exchange between the air spring device and the auxiliary vessel when in an installed state, the closure device:
comprising a bolt which seals off the air spring device by of one end thereof and is supported on the auxiliary vessel by another end thereof when in the installed state; and/or
is configured such that the closure device has a first cross section in a section plane in a first state and the closure device has a second cross section enlarged in relation to the first cross section in the section plane in a second state, and comprises a deformable filling element and a fixing element wherein the filling element is transferred by the fixing element from the first state into the second state; and/or
comprises covering element that includes at least one of a closure cap and a plug, which is arranged, at an air spring device side, on an opening of the fluid channel between the air spring device and the auxiliary vessel.

11. The closure device as claimed in claim 10 , wherein the closure device, in the installed state, is arranged in an interface region, in which the air spring device is attached to the link.

12. The closure device as claimed in claim 11 , wherein the closure device, in the installed state, is fixable via positively locking and/or frictionally locking to the auxiliary vessel, to the link and/or to the air spring device.

13. The closure device as claimed in claim 12 , wherein the closure device, in the installed state, at least partially fills the fluid channel.

14. The closure device as claimed in claim 13 , wherein the closure device is configured to be fixed by the deformable filling element.

15. The closure device as claimed in claim 14 , wherein a cross section of the closure device is configured to change at least in certain regions.

16. The use as claimed in claim 10 , wherein the closure device, in the installed state, is fixable via positively locking and/or frictionally locking to the auxiliary vessel, to the link and/or to the air spring device.

17. The use as claimed in claim 10 , wherein the closure device, in the installed state, at least partially fills the fluid channel.

18. The use as claimed in claim 10 wherein a cross section of the closure device is configured to change at least in certain regions.

Assignees

• Saf Holland Gmbh

Inventors

• Fäth Stefan
• Wallmeier Stefan
• Bonness Kerstin

Classifications

• B60G11/30

  having pressure fluid accumulator therefor, e.g. accumulator arranged in vehicle frame {(dampers accumulating utilisable energy B60G13/14)} · CPC title

• B60G11/27 Primary

  wherein the fluid is a gas · CPC title

• F16F9/049

  multi-chamber units (F16F9/0472, F16F9/05 take precedence) · CPC title

• B60G2202/152

  Pneumatic spring · CPC title

• F16F9/0454

  characterised by the assembling method or by the mounting arrangement, e.g. mounting of the membrane (F16F9/0409, F16F9/0445 take precedence) · CPC title