Modular cross shaft yoke

Patent metadata

Field	Value
Publication number	US-9303750-B2
Application number	US-201214342681-A
Country	US
Kind code	B2
Filing date	Sep 6, 2012
Priority date	Sep 6, 2011
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

A mounting system for a differential, comprising a cross shaft, a first stub shaft, a second stub shaft, and a yoke. The cross shaft comprises a long axis and a passageway through the cross shaft perpendicular to the long axis, the passageway comprising a first hole and a second hole. The first stub shaft comprises a long axis parallel to a central axis of the first hole. The second stub shaft comprises a long axis parallel to a central axis of the second hole. The yoke is in the passageway and comprises a first portion extending in to the first stub shaft and a second portion extending in to the second stub shaft.

First claim

What is claimed is:

1. A mounting system for a differential, comprising:
a cross shaft comprising:
a long axis; and
a passageway through the cross shaft perpendicular to the long axis, the passageway comprising a first hole and a second hole;

a first stub shaft comprising a long axis parallel to a central axis of the first hole;
a second stub shaft comprising a long axis parallel to a central axis of the second hole; and
a yoke in the passageway comprising a first portion extending in to the first stub shaft and a second portion extending in to the second stub shaft,
wherein the yoke press fits to the first stub shaft and the yoke slip fits to the second stub shaft.

2. The mounting system of claim 1 , further comprising a snap ring, wherein the yoke comprises a first notch and the second stub shaft comprises a groove, and wherein the snap ring secures the first notch with the groove.

3. The mounting system of claim 1 , wherein the yoke comprises a notch and the first stub shaft comprises a groove, and wherein a snap ring secures the notch with the groove.

4. The mounting system of claim 1 , wherein the yoke comprises a lip and the first stub shaft comprises a recess, and the lip is press fit in the recess.

5. The mounting system of claim 1 , wherein the cross shaft, the first stub shaft, and the second stub shaft are hollow.

6. The mounting system of claim 1 , wherein the cross shaft comprises a first recess proximal to the first hole and a second recess proximal to the second hole, wherein the first recess comprises a first planar surface and the second recess comprises a second planar surface, wherein the first stub shaft comprises a first planar end and the first planar end abuts the first planar surface, and wherein the second stub shaft comprises a second planar end and the second planar end abuts the second planar surface.

7. The mounting system of claim 6 , wherein the first recess comprises at least one planar side wall and an exterior portion of the first stub shaft is planar and is configured to abut the at least one planar side wall of the first recess, and wherein the at least one planar side wall of the first recess prevents rotation of the first stub shaft in the first recess.

8. A differential comprising:
a one piece housing for substantially enclosing:
a first, second, third, and fourth pinion gear;
a cross shaft passing through the first and fourth pinion gears;
a first stub shaft passing through the second pinion gear;
a second stub shaft passing through the third pinion gear; and
a yoke passing through portions of the cross shaft, the first stub shaft, and the second stub shaft,

wherein the yoke press fits to the first stub shaft and the yoke slip fits to the second stub shaft to retain the cross shaft, the first stub shaft, and the second stub shaft within the housing.

9. The differential of claim 8 , further comprising a snap ring, wherein the yoke comprises a first notch and the first stub shaft comprises an internal groove, and wherein the snap ring secures the first notch with the groove.

10. The differential of claim 8 , further comprising a snap ring, wherein the yoke comprises a notch and the second stub shaft comprises a groove, and wherein the snap ring secures the notch with the groove.

11. The differential of claim 8 , wherein the yoke comprises a lip and the first stub shaft comprises a recess, and the lip is press fit in the recess.

12. The differential of claim 8 , wherein the cross shaft, the first stub shaft, and the second stub shaft are hollow.

13. The differential of claim 8 , wherein the cross shaft comprises a first recess and a second recess, wherein the first recess comprises a first planar surface and the second recess comprises a second planar surface, wherein the first stub shaft comprises a first planar end and the first planar end abuts the first planar surface, and wherein the second stub shaft comprises a second planar end and the second planar end abuts the second planar surface.

14. The differential of claim of claim 13 , wherein the first recess comprises at least one planar side wall and an exterior portion of the first stub shaft is planar and is configured to abut the at least one planar side wall of the first recess, and wherein the at least one planar side wall of the first recess prevents rotation of the first stub shaft in the first recess.

15. The differential of claim 8 , wherein the housing comprises a first passageway, a second passageway, a third passageway, and a fourth passageway, wherein the first passageway is coaxial with the second passageway and the cross shaft extends from the first passageway to the second passageway, and wherein the third passageway is coaxial with the fourth passageway and the first stub shaft extends from the third passageway to the cross shaft and the second stub shaft extends from the fourth passageway to the cross shaft, wherein the first stub shaft is fitted snugly against the third passageway.

16. The mounting system of claim 7 , wherein the second recess comprises at least one planar side wall and an exterior portion of the second stub shaft is planar and is configured to abut the at least one planar side wall of the second recess, and wherein the at least one planar side wall of the second recess prevents rotation of the second stub shaft in the second recess.

17. The differential of claim 8 , wherein the first stub shaft abuts the cross shaft, wherein the second stub shaft abuts the cross shaft, wherein the cross shaft further comprises a passageway there through, and wherein the yoke passes through the passageway and extends out of the cross shaft and in to the first stub shaft and in to the second stub shaft.

18. The differential of claim 14 , wherein the second recess comprises at least one planar side wall and an exterior portion of the second stub shaft is planar and is configured to abut the at least one planar side wall of the second recess, and wherein the at least one planar side wall of the second recess prevents rotation of the second stub shaft in the second recess.

19. A mounting system for a differential, comprising:
a cross shaft comprising:
a long axis; and
a passageway through the cross shaft perpendicular to the long axis, the passageway comprising a first hole and a second hole;

a first stub shaft comprising a long axis parallel to a central axis of the first hole, the first stub shaft further comprising a recess;
a second stub shaft comprising a long axis parallel to a central axis of the second hole; and
a yoke in the passageway comprising a lip on a first portion, the lip press-fit to the recess of the first stub shaft, the yoke further comprising a second portion extending in to the second stub shaft.

20. The mounting system for a differential of claim 19 , wherein the second stub shaft comprises a second recess, and wherein the first stub shaft is identical to the second stub shaft.

21. The mounting system for a differential of claim 19 , further comprising at least one snap ring coupled to the yoke.

22. A mounting system for a differential, comprising:
a cross shaft comprising:
a long axis; and
a passageway through the cross shaft perpendicular to the long axis, the passageway comprising a first hole and a second hole;

a first stub shaft comprising a long axis parallel to a central axis of the first hole, the first stub shaft further comprising a recess;
a second stub shaft comprising a long axis parallel to a central axis of

Assignees

• Fisher Daniel Philip
• Eaton Corp

Inventors

• Fisher Daniel Philip

Classifications

• F16H48/08 Primary

  comprising bevel gears · CPC title

• Y10T29/49826

  Assembling or joining · CPC title

• F16H2048/085

  characterised by shafts or gear carriers for orbital gears · CPC title

• F16H48/42 Primary

  characterised by features of the input shafts, e.g. mounting of drive gears thereon · CPC title