Lubrication fluid deflector/baffle for a motor vehicle axle assembly

• US 5,813,493 A
• Filed: 04/15/1997
• Issued: 09/29/1998
• Est. Priority Date: 04/15/1997
• Status: Expired due to Fees

• Current Assignee: Dana Automotive Systems Group, LLC (Dana, Inc.)
• Original Assignee: Dana Corporation (Dana, Inc.)
• Inventors: Moreau, Paul G. Jr., Sloan, David Paul
• Primary Examiner(s): Bonck, Rodney H.
• Assistant Examiner(s): FENSTERMACHER, DAVID MORGAN
• Application Number:
  US08/839,615
• Time in Patent Office: 532 Days
• Field of Search: 184/6.12, 184/106, 184/6.27, 74/606 R, 74/608
• US Class Current: 184/6.12
• CPC Class Codes: F01M 13/0011 Breather valves
• CPC Class Codes: F16H 48/08 comprising bevel gears
• CPC Class Codes: F16H 57/027 characterised by means for venting gearboxes, e.g. air breathers
• CPC Class Codes: F16H 57/0421 on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
• CPC Class Codes: F16H 57/0482 Gearings with gears having orbital motion
• CPC Class Codes: F16H 57/0483 Axle or inter-axle differentials

Abstract

A lubrication fluid deflector/baffle for a motor vehicle axle assembly which deflects the flow of lubrication fluid inside a motor vehicle differential housing and diverts the lubrication fluid away from the vicinity of an opening or vent in the motor vehicle differential housing to reduce or eliminate "leakage" of lubrication fluid out of the motor vehicle differential housing. The lubrication fluid deflector/baffle for a motor vehicle axle assembly in accordance with the present invention is preferably capable of being mounted in conventional motor vehicle axle assemblies to the bearing cap and is secured in position by a bearing cap bolt.

Claims

1. A lubrication fluid deflector/baffle adapted for installation in a motor vehicle axle assembly including a motor vehicle differential housing having an opening or vent, a bearing assembly secured in position by a bearing cap and a threaded fastener and lubricating fluid therein, said lubrication fluid deflector/baffle comprising:

a front mounting portion having an opening therein, said front mounting portion capable of being secured on said bearing cap by said threaded fastener; and

a side lubrication fluid deflector/baffle portion which precludes lubrication fluid from entering into the vicinity of motor vehicle differential housing adjacent the opening or vent to reduce or eliminate lubrication fluid from "leaking" through said opening or vent.

2. The lubrication fluid deflector/baffle in accordance with claim 1, wherein said front mounting portion includes a circular opening which has a diameter larger than a shaft portion of the threaded fastener, but smaller than a head portion of the threaded fastener.

3. The lubrication fluid deflector/baffle in accordance with claim 2, wherein said front mounting portion includes a radiused downwardly extending portion positioned adjacent said circular opening and said radiused downwardly extending portion includes a radiused portion which is substantially equidistant from and corresponds to a portion of said circular opening.

4. The lubrication fluid deflector/baffle in accordance with claim 3, wherein said front mounting portion includes an outer surface which substantially corresponds to the inner configuration of the motor vehicle differential housing.

5. The lubrication fluid deflector/baffle in accordance with claim 4, wherein said side lubrication fluid deflector/baffle portion is substantially rectangular in configuration.

6. The lubrication fluid deflector/baffle in accordance with claim 5, wherein said lubrication fluid deflector/baffle is fabricated from a metallic material in sheet metal form.

7. The lubrication fluid deflector/baffle in accordance with claim 5, wherein said lubrication fluid deflector/baffle is fabricated from a high strength low allow steel material in sheet metal form.

8. The lubrication fluid deflector/baffle in accordance with claim 1, wherein said front mounting portion includes an outer surface which substantially corresponds to the inner configuration of the motor vehicle differential housing.

9. The lubrication fluid deflector/baffle in accordance with claim 1, wherein said side lubrication fluid deflector/baffle portion is substantially rectangular in configuration.

10. The lubrication fluid deflector/baffle in accordance with claim 1, wherein said lubrication fluid deflector/baffle is fabricated from a metallic material in sheet metal form.

11. A motor vehicle differential assembly for a motor vehicle axle assembly, said motor vehicle differential assembly comprising:

a motor vehicle differential housing enclosing rotating differential components and a lubrication fluid therein, said motor vehicle differential assembly having a bearing assembly to facilitate rotation between said motor vehicle differential housing and a motor vehicle axle, said bearing assembly being secured to said motor vehicle differential housing by a bearing cap and a threaded fastener, and said motor vehicle differential housing further having an opening or vent to permit the entry and exit of air into/from an interior portion of said motor vehicle differential housing; and

a lubrication fluid deflector/baffle mounted on said bearing cap under said threaded fastener to preclude entry of lubrication fluid in the vicinity of said opening or vent and reduce or eliminate the "leakage" of lubrication fluid from said opening or vent.

12. The motor vehicle differential assembly in accordance with claim 11, wherein said lubrication fluid deflector/baffle includes a front mounting portion having a circular opening which has a diameter larger than a shaft portion of said threaded fastener, but smaller than a head portion of said threaded fastener.

13. The motor vehicle differential assembly in accordance with claim 12, wherein said front mounting portion includes a radiused downwardly extending portion positioned adjacent said circular opening and said radiused downwardly extending portion includes a radiused portion which is substantially equidistant from and corresponds to a portion of said circular opening.

14. The motor vehicle differential assembly in accordance with claim 13, wherein said front mounting portion includes an outer surface which substantially corresponds to the inner configuration of said motor vehicle differential housing.

15. The motor vehicle differential assembly in accordance with claim 14, wherein said lubrication fluid deflector/baffle further includes a side lubrication fluid deflector/baffle portion which is substantially rectangular in configuration.

16. The motor vehicle differential assembly in accordance with claim 15, wherein said lubrication fluid deflector/baffle is fabricated from a metallic material in sheet metal form.

17. The motor vehicle differential assembly in accordance with claim 15, wherein said lubrication fluid deflector/baffle is fabricated from a high strength low alloy steel material in sheet metal form.

18. The motor vehicle differential assembly in accordance with claim 11, wherein said lubrication fluid deflector/baffle includes a front mounting portion having an outer surface which substantially corresponds to the inner configuration of said motor vehicle differential housing.

19. The motor vehicle differential assembly in accordance with claim 11, wherein said lubrication fluid deflector/baffle includes a side lubrication fluid deflector/baffle portion which is substantially rectangular in configuration.

20. The motor vehicle differential assembly in accordance with claim 11, wherein said lubrication fluid deflector/baffle is fabricated from a metallic material in sheet metal form.