Double rolling lobe crimpless guide tube

Patent metadata

Field	Value
Publication number	US-11267305-B2
Application number	US-201916707317-A
Country	US
Kind code	B2
Filing date	Dec 9, 2019
Priority date	Dec 9, 2019
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

An air spring assembly includes a guide tube having a plurality of fixing openings spaced circumferentially from each other and a bellow including a plurality of tabs. The bellow is disposed within the guide tube and the plurality of tabs are received within a corresponding one of the fixing openings.

First claim

What is claimed is:

1. An air spring assembly comprising:
a guide tube including a first end, a second end and a plurality of fixing openings spaced circumferentially from each other; and
a bellow including a plurality of tabs extending from an outer surface of the bellow,
wherein the bellow is disposed within the guide tube and the plurality of tabs are received within a corresponding one of the fixing openings.

2. The air spring assembly as recited in claim 1 , wherein the tabs include a retention portion spaced apart from the outer surface of the bellow by a stem portion, wherein the retention portion is larger than the fixing openings.

3. The air spring assembly as recited in claim 2 , wherein the retention portion includes a rounded surface to aid in insertion through a corresponding one of the plurality of fixing openings.

4. The air spring assembly as recited in claim 1 , wherein the plurality of tabs are formed of the same material as the bellow.

5. The air spring assembly as recited in claim 1 , wherein the plurality of tabs are integral portions of the bellow.

6. The air spring assembly as recited in claim 1 , wherein the plurality of fixing openings are all spaced a common distance from one of the first end and the second end.

7. The air spring assembly as recited in claim 6 , wherein the plurality of fixing openings are spaced apart from a midpoint between the first end and the second end.

8. The air spring assembly as recited in claim 1 , wherein the guide tube includes at least one retention groove extending circumferentially about an interior surface and aligned with the plurality of fixing openings.

9. The air spring assembly as recited in claim 1 , wherein the plurality of fixing openings comprises two fixing openings spaced 180 degrees apart and the plurality of tabs comprise two tabs spaced 180 degrees apart.

10. The air spring assembly as recited in claim 1 , wherein the plurality of fixing openings comprises three fixing openings spaced 120 degrees apart and the plurality of tabs comprise three tabs spaced 120 degrees apart.

11. The air spring assembly as recited in claim 1 , wherein the plurality of fixing openings comprises four fixing openings spaced 90 degrees apart and the plurality of tabs comprises four tabs spaced 90 degrees apart.

12. A method of assembling an air spring assembly comprising:
forming a bellow to include a plurality of tabs that extend from an outer surface;
forming a guide tube to include a plurality of fixing openings disposed within a common plane spaced circumferentially apart from each other;
placing the bellow within the guide tube; and
assembling the plurality of tabs through corresponding ones of the plurality of fixing openings to retain the bellow in a desired orientation relative to the guide tube.

13. The method as recited in claim 12 , including forming the bellow and the plurality of tabs as a single integral part.

14. The method as recited in claim 13 , including forming the tabs to include a retention portion spaced apart from the outer surface of the bellow by a stem portion, wherein the retention portion is larger than the fixing openings.

15. The method as recited in claim 14 , including forming the retention portion to include a semi-spherical surface to aid in insertion through a corresponding one of the plurality of fixing openings.

16. The method as recited in claim 12 , including forming the plurality of fixing openings to be spaced apart a common distance from a first end of the guide tube.

17. The method as recited in claim 16 , including forming the plurality of fixing openings to be spaced apart from a middle point between the first end and a second end of the guide tube.

18. The method as recited in claim 12 , including forming the guide tube to include at least one retention groove extending circumferentially about an interior surface and aligned with the plurality of fixing openings.

19. The method as recited in claim 12 , wherein forming the plurality of fixing openings comprises forming three fixing openings spaced 120 degrees apart and forming the plurality of tabs comprises forming three tabs spaced 120 degrees apart.

20. The method as recited in claim 12 , wherein forming the plurality of fixing openings comprises forming four fixing openings spaced 90 degrees apart and forming the plurality of tabs comprises forming four tabs spaced 90 degrees apart.

Assignees

• Continental automotive systems inc

Inventors

• Jerisk Joseph G
• Pniewski Garrett M

Classifications

• F16F9/3271

  Assembly or repair · CPC title

• B60G2206/424

  Plunger or top retainer construction for bellows or rolling lobe type air springs · CPC title

• B60G2202/152

  Pneumatic spring · CPC title

• F16F9/055

  having a double diaphragm construction · CPC title

• F16F9/05

  the flexible wall being of the rolling diaphragm type · CPC title