Air spring sleeves swage assembly

• US 10,451,135 B2
• Filed: 09/15/2016
• Issued: 10/22/2019
• Est. Priority Date: 09/15/2015
• Status: Active Grant

• Current Assignee: Firestone Industrial Products Co LLC (Bridgestone Corporation)
• Original Assignee: Firestone Industrial Products Co LLC (Bridgestone Corporation)
• Inventors: Brookes, Graham R.
• Primary Examiner(s): Sahni, Vishal R
• Application Number:
  US15/760,116
• Publication Number:
  US 20180252288A1
• Time in Patent Office: 1,132 Days
• CPC Class Codes: B60G 11/27 wherein the fluid is a gas
• CPC Class Codes: B60G 2206/42 Springs
• CPC Class Codes: B60G 2206/8209 by deformation
• CPC Class Codes: F16F 2226/04 Assembly or fixing methods; methods to form or fashion parts
• CPC Class Codes: F16F 2230/0005 Attachment, e.g. to facilitate mounting onto confer adjustability
• CPC Class Codes: F16F 9/0454 characterised by the assembling method or by the mounting arrangement, e.g. mounting of the membrane F16F9/0409, F16F9/0445 take precedence
• CPC Class Codes: F16F 9/0463 with separate crimping rings
• CPC Class Codes: F16F 9/05 the flexible wall being of the rolling diaphragm type
• CPC Class Codes: F16F 9/3271 Assembly or repair

Abstract

A gas spring system (10), comprising: an end plate (12); a piston (14) laterally spaced from said end plate (12); a first flexible sleeve (16) having a first end (13) and a second end (15), said first end (13) of the first flexible sleeve (16) sealingly connected to the end plate (12); a second flexible sleeve (18) having a first end (17) and a second end (19), said first end (17) of the second flexible sleeve (18) sealingly connected to the piston (14); and a swage assembly (20) sealingly engaging the respective second ends (15, 19) of said first and second flexible sleeves (16, 18).

Claims

1. A gas spring system, comprising:

an end plate;

a piston laterally spaced from said end plate;

a first flexible sleeve having a first end and a second end, said first end of said first flexible sleeve sealingly connected to said end plate, and said second end being open and having an outer circumferential surface;

a second flexible sleeve having a first end and a second end, said first end of said second flexible sleeve sealingly connected to said piston, and said second end being open and having an outer circumferential surface; and

a swage assembly sealingly engaging the respective second ends of said first and second flexible sleeves, wherein at least one pressurized cavity lies in between said end plate and said piston, and said swage assembly includes a body with a first receiving member for receiving said first flexible sleeve and a second receiving member for receiving said second flexible sleeve, said second receiving member being coaxial with said first receiving member, and said first receiving member surrounds said outer circumferential surface of said second end of said first flexible sleeve and said second receiving member surrounds said outer circumferential surface of said second end of said second flexible sleeve.

2. The gas spring system of claim 1, wherein said end plate is disposed to receive a pressurized fluid.

3. The gas spring system of claim 1, wherein said first and second flexible sleeves are made of an elastomeric material including rubber and a polymer blend.

4. The gas spring system of claim 1, wherein said swage assembly sealingly engages said first flexible sleeve and said second flexible sleeves each at a differing bias angle.

5. The gas spring system of claim 1, wherein said second flexible sleeve is more flexible than said first flexible sleeve.

6. The gas spring system of claim 1, wherein said first flexible sleeve is substantially rigid.

7. The gas spring system of claim 6, wherein said second flexible sleeve is substantially flexible.

8. The gas spring system of claim 1, wherein a volume within said second flexible sleeve moves a greater amount than a volume within said first flexible sleeve.

9. The gas spring system of claim 1, wherein said swage assembly at least partially contains said second flexible sleeve during compression of said gas spring system.

10. The gas spring system of claim 1, wherein said swage assembly surrounds and engages with said first and second flexible sleeves in a configuration which does not include a double rolling lobe design.

11. A method of constructing a gas spring system, comprising:

providing a gas spring system, including;

an end plate;

a piston laterally spaced from said end plate;

a first flexible sleeve having a first end and a second end, said first end of said first flexible sleeve sealingly connected to said end plate, and said second end being open and having an outer circumferential surface;

a second flexible sleeve having a first end and a second end, said first end of said second flexible sleeve sealingly connected to said piston, and said second end being open and having an outer circumferential surface; and

a swage assembly including a body with a first receiving member for receiving said first flexible sleeve and a second receiving member for receiving said second flexible sleeve, said second receiving member being coaxial with said first receiving member;

aligning said first flexible sleeve and said second flexible sleeve at a desired bias angle; and

swaging said swage assembly to fluidly join said first and second flexible sleeves by sealingly connecting the respective said second ends of the first and second flexible sleeves to said swage assembly so that said first receiving member surrounds said outer circumferential surface of said second end of said first flexible sleeve and said second receiving member surrounds said outer circumferential surface of said second end of said second flexible sleeve, wherein at least one pressurized cavity lies in between said end plate and said piston.

12. The method of claim 11, wherein said end plate is disposed to receive a pressurized fluid.

13. The method of claim 11, wherein said first and second flexible sleeves are made of an elastomeric material including rubber and a polymer blend.

14. The method of claim 11, wherein said swage assembly sealingly engages said first flexible sleeve and said second flexible sleeves each at a differing bias angle.

15. The method of claim 11, wherein said second flexible sleeve is more flexible than said first flexible sleeve.

16. The method of claim 11, wherein said first flexible sleeve is substantially rigid.

17. The method of claim 16, wherein said second flexible sleeve is substantially flexible.

18. The method of claim 11, wherein a volume within said second flexible sleeve moves a greater amount than a volume within said first flexible sleeve.

19. The method of claim 11, wherein said swage assembly at least partially contains said second flexible sleeve during compression of said gas spring system.

20. The method of claim 11, wherein said swage assembly surrounds and engages with said first and second flexible sleeves in a configuration which does not include a double rolling lobe design.