Vibration damper

Patent metadata

Field	Value
Publication number	US-11215259-B2
Application number	US-201816007093-A
Country	US
Kind code	B2
Filing date	Jun 13, 2018
Priority date	Jun 13, 2017
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

A vibration damper may include a damper cylinder, a guiding closure that is held in the damper cylinder by a first clamping element, a piston rod that is axially guided in the guiding closure, and a piston rod functional group that is connected to the piston rod and disposed in the damper cylinder. At least one second clamping element may be connected to an internal wall of the damper cylinder, and a holding element may be disposed in the damper cylinder. The second clamping element can be disposed between the guiding closure and the holding element, and the holding element can be disposed between the second clamping element and the piston rod functional group. Further, the internal diameter of the second clamping element at least in portions is smaller than the external diameter of the holding element.

First claim

What is claimed is:

1. A vibration damper comprising:
a damper cylinder with an internal wall;
a guiding closure that is held in the damper cylinder by a first clamping element;
a piston rod that is axially guided in the guiding closure;
a piston rod functional group comprising a damper piston that is connected to the piston rod and disposed in the damper cylinder;
a second clamping element connected to the internal wall of the damper cylinder; and
a holding element that is connected to the piston rod functional group so as to be axially movable with the piston rod functional group within the damper cylinder, the holding element disposed between the second clamping element and the piston rod functional group, wherein the second clamping element is disposed axially between the guiding closure and the holding element, wherein an internal diameter of the second clamping element is smaller at least at some portions than an external diameter of the holding element.

2. The vibration damper of claim 1 wherein the second clamping element is held in a groove in the internal wall of the damper cylinder between the guiding closure and the holding element.

3. The vibration damper of claim 1 wherein the first and second clamping elements are releasably connected to the damper cylinder.

4. The vibration damper of claim 1 wherein the first and second clamping elements are configured as snap rings.

5. The vibration damper of claim 1 wherein the holding element is connected directly to the piston rod functional group.

6. The vibration damper of claim 1 wherein the holding element is integral to the piston rod functional group.

7. The vibration damper of claim 1 wherein the second clamping element is disposed axially between the guiding closure and the holding element such that the holding element and the second clamping element are axially closer to the guiding closure than the piston rod functional group.

8. The vibration damper of claim 1 wherein the damper piston includes valves through which damping liquid is configured to pass.

9. The vibration damper of claim 1 wherein an outer diameter of the piston rod functional group is smaller than an outer diameter of the damper piston.

10. A vibration damper comprising:
a damper cylinder with an internal wall;
a guiding closure that is held in the damper cylinder by a first clamping element;
a piston rod that is axially guided in the guiding closure and occupies an opening of the guiding closure in a fully retracted position and in a fully extended position;
a piston rod functional group comprising a damper piston that is connected to the piston rod and disposed in the damper cylinder;
a second clamping element connected to the internal wall of the damper cylinder; and
a holding element disposed in the damper cylinder, the holding element disposed between the second clamping element and the piston rod functional group, wherein the second clamping element is disposed axially between the guiding closure and the holding element such that the holding element is axially closer to the guiding closure than the piston rod functional group, wherein an internal diameter of the second clamping element is smaller at least at some portions than an external diameter of the holding element.

11. The vibration damper of claim 10 wherein the second clamping element is disposed axially between the guiding closure and the holding element such that the holding element and the second clamping element are axially closer to the guiding closure than the piston rod functional group.

12. The vibration damper of claim 10 wherein the holding element is axially movable within the damper cylinder when the vibration damper is in an assembled, operational state.

13. The vibration damper of claim 10 wherein the damper piston includes valves through which damping liquid is configured to pass.

14. The vibration damper of claim 10 wherein the holding element is connected directly to the piston rod functional group.

15. The vibration damper of claim 10 wherein an outer diameter of the piston rod functional group is smaller than an outer diameter of the damper piston.

16. A vibration damper comprising:
a damper cylinder with an internal wall;
a guiding closure that is held in the damper cylinder by a first clamping element;
a piston rod that is axially guided in the guiding closure;
a piston rod functional group comprising a damper piston that is connected to the piston rod and disposed in the damper cylinder, wherein the damper piston includes valves through which damping liquid is configured to pass;
a second clamping element connected to the internal wall of the damper cylinder; and
a holding element disposed in the damper cylinder, the holding element disposed between the second clamping element and the piston rod functional group, wherein the second clamping element is disposed axially between the guiding closure and the holding element, wherein an internal diameter of the second clamping element is smaller at least at some portions than an external diameter of the holding element.

17. The vibration damper of claim 16 wherein the second clamping element is disposed axially between the guiding closure and the holding element such that the holding element and the second clamping element are axially closer to the guiding closure than the piston rod functional group.

18. The vibration damper of claim 16 wherein the holding element is axially movable within the damper cylinder when the vibration damper is in an assembled, operational state.

19. The vibration damper of claim 16 wherein the holding element is connected directly to the piston rod functional group.

20. The vibration damper of claim 16 wherein an outer diameter of the piston rod functional group is smaller than an outer diameter of the damper piston.

Assignees

• Thyssen Krupp Bilstein Gmbh
• Thyssenkrupp Ag

Inventors

• Veltum Christian
• Weiffen Raimund
• Schmitz Marc
• Severcan Hakan
• Stottrop Sebastian

Classifications

• B60G2202/24

  Fluid damper · CPC title

• F16F2230/0005

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

• F16F9/061

  Mono-tubular units · CPC title

• B60G2206/41

  Dampers · CPC title

• B60G13/08

  hydraulic · CPC title