Trunnion reinforcing ring

• US 5,713,247 A
• Filed: 02/14/1997
• Issued: 02/03/1998
• Est. Priority Date: 02/17/1995
• Status: Expired due to Fees

• Current Assignee: Dana Automotive Systems Group, LLC (Dana, Inc.)
• Original Assignee: Dana Corporation (Dana, Inc.)
• Inventors: Skelton, Jack E., Barnholt, Mark C., Ballinger, Patrick J.
• Primary Examiner(s): LUONG, VINH
• Application Number:
  US08/800,335
• Time in Patent Office: 354 Days
• Field of Search: 74/606 R, 74/607
• US Class Current: 74/607
• CPC Class Codes: B60K 17/16 of differential gearing
• CPC Class Codes: Y10T 74/2186 Gear casings
• CPC Class Codes: Y10T 74/2188 Axle and torque tubes

Abstract

An apparatus comprising a support structure having at least one trunnion which is adapted to receive a generally cylindrical hollow tube. The trunnion includes an annular groove formed in an outer surface. The apparatus further comprises an annular reinforcing ring disposed in the annular groove. The support structure is preferably made of a non-ferrous metallic alloy and the reinforcing ring may be made of either a ferrous metal, such as iron or a steel alloy, or may be made of a composite material. The support structure may comprise an axle carrier or a disconnect housing of an axle drive assembly, or any other support structure having a trunnion which accepts a generally cylindrical hollow tube. The support structure may comprise a casting, and the reinforcing ring may comprise a prefabricated, one-piece construction which is cast in place in the trunnion groove of the support structure. Alternatively, the reinforcing ring may comprise a prefabricated one-piece construction which is pressed in place in the trunnion groove, or may comprise a two-piece construction with each piece disposed in the trunnion groove and fastened to one another.

Claims

1. A support structure for supporting a hollow axle tube, comprising:

a pair of trunnions adapted to receive the hollow axle tube, wherein each of said pair of trunnions includes an outer surface and an outwardly extending end and an annular groove is formed in said outer surface of each of said trunnions, said annular groove extending to said outwardly extending end; and

a pair of annular reinforcing rings, one of said pair of annular reinforcing rings being disposed in said annular groove in each of said pair of trunnions, said pair of annular reinforcing rings extending to said outwardly extending end of each of said pair of trunnions.

2. The support structure as recited in claim 1, wherein:

each of said pair of trunnions are made of a non-ferrous metallic alloy; and

each of said pair of annular reinforcing rings are made of a ferrous metal.

3. The support structure as recited in claim 2, wherein:

each of said pair of trunnions are a casting; and

each of said pair of annular reinforcing rings are a prefabricated, one-piece construction bonded to each of said pair of trunnions.

4. The support structure as recited in claim 3, wherein each of said pair of trunnions are made of a cast aluminum alloy.

5. The support structure as recited in claim 3, wherein each of said pair of trunnions are made of a cast magnesium alloy.

6. The support structure as recited in claim 2, wherein:

each of said pair of annular reinforcing rings are a prefabricated, one-piece construction which is engaged with each of said pair of trunnions in an interference fit.

7. The support structure as recited in claim 2, wherein each of said pair of annular reinforcing rings are made of a steel alloy.

8. The support structure as recited in claim 2, wherein each of said pair of annular reinforcing rings are made of iron.

9. The support structure as recited in claim 2, wherein each of said pair of annular reinforcing rings have a rectangular-shaped cross-section.

10. The support structure as recited in claim 1, wherein:

each of said pair of trunnions are made of a non-ferrous metallic alloy; and

each of said pair of annular reinforcing rings are made of a composite material.

11. The support structure as recited in claim 10, wherein each of said pair of annular reinforcing rings are a prefabricated, one-piece construction engaged with each of said pair of trunnions in an interference fit.

12. The support structure as recited in claim 10, wherein each of said pair of annular reinforcing rings have a rectangular-shaped cross-section.

13. The support structure as recited in claim 1, wherein each of said pair of annular reinforcing rings have a rectangular-shaped cross-section.

14. The support structure as recited in claim 13, wherein:

each of said pair of trunnions are made of a non-ferrous metallic alloy; and

each of said pair of annular reinforcing rings are made of a composite material.

15. An axle assembly, comprising:

a support structure having a pair of axially spaced trunnions, wherein each of said trunnions includes an outer surface and an outwardly extending end and an annular groove is formed in said outer surface of said trunnion, said annular groove extending to said outwardly extending ends;

first and second axle tubes, each of said axle tubes having a first end inserted into one of said trunnions; and

first and second reinforcing rings, each of said reinforcing rings being disposed in said annular groove of a corresponding one of said trunnions, said first and second reinforcing rings extending to said outwardly extending ends of said axially spaced trunnions.

16. The axle assembly as recited in claim 15, said support structure is an axle carrier made of a non-ferrous metallic alloy, wherein each of said reinforcing rings is made of a ferrous metal.

17. The axle assembly as recited in claim 16, wherein each of said annular reinforcing rings have a rectangular-shaped cross-section.

18. The axle assembly as recited in claim 15, wherein said support structure is an axle carrier made of a non-ferrous metallic alloy, wherein each of said reinforcing rings is made of a composite material.

19. The axle assembly as recited in claim 18, wherein each of said annular reinforcing rings have a rectangular-shaped cross-section.

20. The axle assembly as recited in claim 15, wherein each of said annular reinforcing rings have a rectangular-shaped cross-section.