Air spring assembly with non-threaded connection

• US 7,959,138 B2
• Filed: 02/03/2009
• Issued: 06/14/2011
• Est. Priority Date: 05/24/2005
• Status: Active Grant

• Current Assignee: Firestone Industrial Products Co LLC (Bridgestone Corporation)
• Original Assignee: BFS Diversified Products LLC (Bridgestone Corporation)
• Inventors: Leonard, Joshua R.
• Primary Examiner(s): Williams; Thomas J
• Application Number:
  US12/364,606
• Publication Number:
  US 20090179359A1
• Time in Patent Office: 861 Days
• Field of Search: 267/64.19, 267/64.23, 267/64.24, 267/64.27, 267/64.28, 267/35, 267/122, 280/124.157, 280/124.158, 280/124.159, 737/56, 403/329, 403/397, 403/DIG.14
• US Class Current: 267/64.27
• CPC Class Codes: B60G 11/27 wherein the fluid is a gas
• CPC Class Codes: B60G 2202/152 Pneumatic spring
• CPC Class Codes: F16F 9/04 in a chamber with a flexible wall producing hollow articles of plastics, e.g. air bellows, B29D22/00
• CPC Class Codes: F16F 9/43 Filling or drainage arrangements, e.g. for supply of gas filling vessels with, or discharging from vessels, compressed, liquefied, or solidified gases F17C
• CPC Class Codes: F16L 37/008 for branching pipes; for joining pipes to walls
• CPC Class Codes: F16L 37/0925 with rings which bite into the wall of the pipe
• CPC Class Codes: F16L 37/0926 with an inner support sleeve arranged within the pipe
• CPC Class Codes: F16L 37/0927 the wedge element being axially displaceable for releasing the coupling

Abstract

A connector fitting and air spring assembly includes a connector fitting supported on an end member of an air spring. The connector fitting is secured on the air spring by a retaining member engaging the end member of the air spring.

Claims

1. An air spring assembly comprising:

a first end member including a first side, an opposing second side and an opening extending therethrough;

a second end member disposed in spaced relation to said first end member and in facing relation to said first side thereof such that a longitudinally-extending axis is formed therebetween;

a flexible wall secured between said first and second end members and at least partially defining a spring chamber between said first side of said first end member and said second end member;

a connector fitting at least partially received within said opening and in fluid communication with said spring chamber, said connector fitting including;

a fitting body extending longitudinally between opposing first and second ends;

first and second retaining members extending longitudinally along said fitting body in radially outwardly-spaced relation thereto such that a gap is formed between said fitting body and said first and second retaining members, said first and second retaining members including a fixed end and an opposing free end, said fixed end operatively connected to said fitting body toward said first end thereof, and said free end being capable of resilient deflection toward said fitting body and including a radially-outwardly extending projection adapted to interengaging said first end member; and

,

a radially outwardly-extending flange formed on at least one of said fitting body, said first retaining member and said second retaining member, said flange being disposed in an intermediate longitudinal position between said fixed end and said free end of said first and second retaining members such that a longitudinally-extending retaining portion of said connector fitting is formed between said flange and said projection and such that an outer portion of said connector fitting is formed longitudinally outwardly of said flange toward said first end of said fitting body; and

,

a sealing member sealingly disposed between said connector fitting and said first end member;

said connector fitting interengaging said first end member such that said retaining portion is at least partially disposed between said first and second sides of said first end member and said outer portion is disposed outwardly of said first end member opposite said spring chamber such that a radially-inward force can be applied to said first and second retaining members along said outer portion to radially-inwardly displace said free ends for selective removal of said connector fitting from said first end member.

2. An air spring assembly according to claim 1, wherein said free end of said first and second retaining members is spaced longitudinally inwardly from said second end of said fitting body such that a first portion of said fitting body along said second end thereof extends longitudinally outwardly beyond said free end in a direction generally opposite said flange, and said sealing member is positioned along said first portion of said fitting body.

3. An air spring assembly according to claim 2, wherein one of said first end member and said first portion of said fitting body includes a groove adapted to receive said sealing member.

4. An air spring assembly according to claim 2, wherein said fitting body includes a first longitudinally-extending portion toward said first end with a first cross-sectional dimension and includes a second longitudinally-extending portion toward said second end with a second cross-sectional dimension that is less than said first cross-sectional dimension.

5. An air spring assembly according to claim 4, wherein said first end member includes an opening wall at least partially defining said opening extending through said first end member, said opening wall including a first wall portion and a second wall portion disposed longitudinally-inwardly from said first wall portion toward said first side of said first end member, said first wall portion at least partially defining a first section of said opening that has a first cross-sectional dimension complimentary to said first cross-sectional dimension of said fitting body, and said second wall portion at least partially defining a second section of said opening that has a second cross-sectional dimension complimentary to said second cross-sectional dimension of said fitting body.

6. An air spring assembly according to claim 1, wherein at least said longitudinally-extending retaining portion of said connector fitting has an approximately circular cross-sectional shape with at least a portion of said fitting body, said first retaining member and said second retaining member defining said approximately circular cross-sectional shape, said fitting body including first and second flats extending longitudinally therealong adjacent said first and second retaining members such that said first and second flats at least partially define said gaps between said fitting body and said first and second retaining members.

7. An air spring assembly comprising:

a first end member including a first side, an opposing second side and an opening extending therethrough;

a second end member disposed in spaced relation to said first end member and in facing relation to said first side thereof such that a longitudinally-extending axis is formed therebetween;

a flexible wall secured between said first and second end members and at least partially defining a spring chamber between said first side of said first end member and said second end member;

a connector fitting at least partially received within said opening and in fluid communication with said spring chamber, said connector fitting including;

a fitting body extending longitudinally between opposing first and second ends and at least partially received within said opening;

first and second retaining members extending longitudinally from along said fitting body and at least partially received within said opening, said first and second retaining members including a fixed end and an opposing free end, said fixed end operatively connected to said fitting body, and said free end being capable of resilient deflection and including a radially-outwardly extending projection adapted to interengaging said first end member, said free end spaced longitudinally inwardly from said second end of said fitting body such that a portion of said fitting body along said second end thereof extends longitudinally outwardly beyond said free end; and

,

a radially outwardly-extending flange at least partially formed along said first and second retaining members and disposed in longitudinally-spaced relation to said fixed end of said first and second retaining members such that said flange is in an intermediate position between said fixed end and said free end and such that a longitudinally-extending retaining portion of said first and second retaining members is formed between said flange and said projection; and

,

a sealing member sealingly disposed between said connector fitting and said first end member, said sealing member positioned in longitudinally-spaced relation to said free end of said first and second retaining members in a direction generally opposite said flange.

8. An air spring assembly according to claim 7, wherein said second end of said fitting body includes a radially-inwardly extending groove and said sealing member is at least partially received within said groove.

9. An air spring assembly comprising:

a first end member including a first side, an opposing second side and an opening wall at least partially defining an opening extending through said first end member, said opening wall including a first wall portion and a second wall portion disposed longitudinally-inwardly from said first wall portion toward said first side of said first end member;

a second end member disposed in spaced relation to said first end member and in facing relation to said first side thereof such that a longitudinally-extending axis is formed therebetween;

a flexible wall secured between said first and second end members and at least partially defining a spring chamber between said first side of said first end member and said second end member;

a connector fitting at least partially received within said opening and in fluid communication with said spring chamber, said connector fitting including;

a fitting body extending longitudinally between opposing first and second ends;

first and second retaining members extending longitudinally from said fitting body, said first and second retaining members including a fixed end and an opposing free end, said fixed end operatively connected to said fitting body, and said free end being capable of resilient deflection and including a radially-outwardly extending projection adapted to interengaging said first end member, said free end spaced longitudinally inwardly from said second end of said fitting body such that a portion of said fitting body along said second end thereof extends longitudinally outwardly beyond said free end; and

,

a radially outwardly-extending flange formed on said fitting body and disposed in longitudinally-spaced relation to said free end of said first and second retaining members such that a longitudinally-extending retaining portion of said connector fitting is formed between said flange and said projection; and

,

a sealing member sealingly disposed between said connector fitting and said first end member, said sealing member positioned in longitudinally-spaced relation to said free end of said first and second retaining members in a direction generally opposite said flange;

said first wall portion adapted to receive and interengage said connector fitting on said first end member, and said second wall portion adapted to receive and sealingly engage said second end of said connector fitting.

10. An air spring assembly according to claim 9, wherein said first wall portion at least partially defines a first section of said opening that has a first cross-sectional dimension and said second wall portion at least partially defines a second section of said opening that has a second cross-sectional dimension with said first cross-sectional dimension being greater than said second cross-sectional dimension.

11. An air spring assembly according to claim 10, wherein said first end of said fitting body has a first cross-sectional dimension that is complimentary to said first cross-sectional dimension of said first section of said opening, and said second end of said fitting body has a second cross-sectional dimension that is less than said first cross-sectional dimension of said fitting body and is complimentary to said second cross-sectional dimension of said second section of said opening.

12. An air spring assembly according to claim 9, wherein said opening wall includes a radially-outwardly extending groove formed into said first end member between said first and second wall portions, said groove defining a shoulder wall extending approximately laterally-outwardly from along said first wall portion.

13. An air spring assembly according to claim 12, wherein said connector fitting is received in said opening such that said flange is disposed adjacent said second side of said first end member and said projection on said first and second retaining members operatively interengages said shoulder wall thereby retaining said connector fitting on said first end member.