Damper device

Patent metadata

Field	Value
Publication number	US-12066076-B2
Application number	US-201917270963-A
Country	US
Kind code	B2
Filing date	Aug 28, 2019
Priority date	Sep 6, 2018
Publication date	Aug 20, 2024
Grant date	Aug 20, 2024

Abstract

A damper device may include a damper tube and a backpack valve arrangement. The damper tube comprises an outer wall with a first passage opening. The backpack valve arrangement may be arranged in a backpack housing, and the backpack housing may have a second passage opening. The first passage opening and the second passage opening may be connected via a first duct of a connecting element. The damper tube may have a main extension axis, and the first and second passage openings may be offset from one another in a direction of the main extension axis. In some cases the connecting element is non-integral with the damper tube, and the connecting element is non-integral with the backpack housing.

First claim

What is claimed is:

1. A damper device comprising:
a damper tube with an outer wall with a first passage opening;
a backpack valve arrangement;
a backpack housing in which the backpack valve arrangement is disposed, wherein the backpack housing includes a second passage opening; and
a connecting element with a first duct, wherein the first and second passage openings are connected via the first duct of the connecting element, and wherein the first duct includes a first end region and a second end region, and wherein the first end region and the second end region are different shapes;
wherein the first end region is connected to the first passage opening, and wherein the second end region is connected to the second passage opening, wherein the first end region is circular and the second end region is oval-shaped.

2. The damper device of claim 1 wherein the damper tube has a main extension axis, wherein the first and second passage openings are offset from one another in a direction of the main extension axis.

3. The damper device of claim 1 wherein the connecting element is formed separately from and non-integral with the damper tube, wherein the connecting element is formed separately from and non-integral with the backpack housing.

4. The damper device of claim 1 wherein the outer wall includes a third passage opening, wherein the backpack housing includes a fourth passage opening, wherein the third and fourth passage openings are connected via a second duct of the connecting element.

5. The damper device of claim 4 wherein the third passage opening and the fourth passage opening are disposed offset from one another in the direction of the main extension axis of the damper tube.

6. The damper device of claim 4 wherein the first and third passage openings exhibit a first spacing in the direction of the main extension axis, wherein the second and fourth passage openings exhibit a second spacing in the direction of the main extension axis, wherein the first and second spacings are the same size.

7. The damper device of claim 4 wherein the damper tube comprises:
a piston that is movable in and out; and
a first and a second working chamber, wherein the first passage opening is disposed at the first working chamber, wherein the third passage opening is disposed at the second working chamber.

8. The damper device of claim 4 wherein the backpack housing comprises a first hydraulic chamber and a second hydraulic chamber, wherein the second passage opening is disposed at the first hydraulic chamber and the fourth passage opening is disposed at the second hydraulic chamber.

9. The damper device of claim 1 wherein the first duct is configured to deflect a first hydraulic flow, wherein the second duct is configured to deflect a second hydraulic flow.

10. The damper device of claim 1 wherein the connecting element includes a wall that comprises sheet metal.

11. A damper device comprising:
a damper tube with an outer wall with a first passage opening;
a backpack valve arrangement;
a backpack housing in which the backpack valve arrangement is disposed, wherein the backpack housing includes a second passage opening; and
a connecting element with a first duct, wherein the first and second passage openings are connected via the first duct of the connecting element, and wherein the first duct includes a first end region and a second end region, and wherein the first end region and the second end region are different shapes;
wherein the outer wall includes a third passage opening, wherein the backpack housing includes a fourth passage opening, wherein the third and fourth passage openings are connected via a second duct of the connecting element;
wherein the second duct has a first end region that is connected to the third passage opening, wherein the second duct has a second end region that is connected to the fourth passage opening, wherein the second end region is circular and the first end region is oval-shaped.

12. The damper device of claim 11 wherein the damper tube has a main extension axis, wherein the first and second passage openings are offset from one another in a direction of the main extension axis.

13. The damper device of claim 11 wherein the connecting element is formed separately from and non-integral with the damper tube, wherein the connecting element is formed separately from and non-integral with the backpack housing.

14. The damper device of claim 11 wherein the third passage opening and the fourth passage opening are disposed offset from one another in the direction of the main extension axis of the damper tube.

15. The damper device of claim 11 wherein the first and third passage openings exhibit a first spacing in the direction of the main extension axis, wherein the second and fourth passage openings exhibit a second spacing in the direction of the main extension axis, wherein the first and second spacings are the same size.

16. The damper device of claim 11 wherein the damper tube comprises:
a piston that is movable in and out; and
a first and a second working chamber, wherein the first passage opening is disposed at the first working chamber, wherein the third passage opening is disposed at the second working chamber.

17. The damper device of claim 11 wherein the backpack housing comprises a first hydraulic chamber and a second hydraulic chamber, wherein the second passage opening is disposed at the first hydraulic chamber and the fourth passage opening is disposed at the second hydraulic chamber.

18. The damper device of claim 11 wherein the first duct is configured to deflect a first hydraulic flow, wherein the second duct is configured to deflect a second hydraulic flow.

19. The damper device of claim 11 wherein the connecting element includes a wall that comprises sheet metal.

Assignees

• Thyssen Krupp Bilstein Gmbh
• Thyssenkrupp Ag

Inventors

• Gross Manuel

Classifications

• F16F2234/02

  cylindrical · CPC title

• F16F2232/08

  Linear · CPC title

• F16F2230/0005

  Attachment, e.g. to facilitate mounting onto confer adjustability · CPC title

• F16F2224/0208

  Alloys · CPC title

• F16F2222/12

  Fluid damping · CPC title