Bearing inner ring with anti-rotation feature

Patent metadata

Field	Value
Publication number	US-9874246-B2
Application number	US-201615049769-A
Country	US
Kind code	B2
Filing date	Feb 22, 2016
Priority date	Feb 22, 2016
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

A bearing assembly including an anti-rotation feature is provided. The bearing assembly includes a radially outer bearing ring including a radially outer race on a radially inner surface and a radially inner bearing ring and including a radially inner race on a radially outer surface and a radially inner bearing ring retention element. A plurality of rolling elements are supported to roll between the radially outer race and the radially inner race. The anti-rotation feature is provided by a washer including a first washer retention element configured to engage the radially inner bearing ring retention element, and a second washer retention element configured to engage a torque transmitting portion of a shaft.

First claim

What is claimed is:

1. A bearing assembly comprising:
a radially outer bearing ring including a radially outer race on a radially inner surface;
a radially inner bearing ring including a radially inner race on a radially outer surface and a radially inner bearing ring retention element;
a plurality of rolling elements supported to roll between the radially outer race and the radially inner race; and
a washer defined by a flat disk body defining a radial outermost edge and a radial innermost edge, the disk body extending in a radial plane and including a first washer retention element configured to engage the radially inner bearing ring retention element, and a second washer retention element configured to engage a torque transmitting portion of a shaft, the first washer retention element and the second washer retention element are both defined along the radial innermost edge of the disk body and the first washer retention element and the second washer retention element are spaced radially inward from the radial outermost edge of the flat disk body, the first washer retention element extending axially from the radial plane of the disk body, and the second washer retention element extending radially inwardly from the disk body and aligned with the radial plane of the disk body.

2. The bearing assembly of claim 1 , wherein the torque transmitting portion of the shaft is formed on a radially outer surface of the shaft.

3. The bearing assembly of claim 1 , wherein the first washer retention element and the second washer retention element are formed on a radially inner surface of the washer.

4. The bearing assembly of claim 1 , wherein the radially inner bearing ring retention element comprises at least one notch, and the first washer retention element comprises at least one axially extending projection configured to engage the at least one notch of the radially inner bearing ring.

5. The bearing assembly of claim 4 , wherein the at least one notch of the radially inner bearing ring is recessed from an axial end face of the radially inner bearing ring.

6. The bearing assembly of claim 1 , wherein the torque transmitting portion of the shaft comprises a first set of teeth, and the second washer retention element comprises a second set of teeth configured to mate with the first set of teeth of the torque transmitting portion of the shaft.

7. The bearing assembly of claim 1 , wherein an axial end face of the washer abuts a first axial end face of the radially inner bearing ring in an installed state.

8. The bearing assembly of claim 1 , wherein the radially inner bearing ring retention element comprises at least one axially extending projection, and the first washer retention element comprises at least one notch configured to receive the at least one axially extending projection of the radially inner bearing ring.

9. The bearing assembly of claim 1 , wherein the radially inner edge of the disk body is defined continuously by either the first washer retention element or the second washer retention element.

10. A bearing assembly comprising:
a radially outer bearing ring including a radially outer race on a radially inner surface;
a radially inner bearing ring including a radially inner race on a radially outer surface and a radially inner bearing ring retention element;
a plurality of rolling elements supported to roll between the radially outer race and the radially inner race; and
a washer including a first washer retention element configured to engage the radially inner bearing ring retention element, and a second washer retention element configured to engage a torque transmitting portion of a shaft, wherein the radially inner bearing ring retention element comprises at least one axially extending projection, and the first washer retention element comprises at least one notch configured to receive the at least one axially extending projection of the radially inner bearing ring, wherein the radially inner bearing ring retention element comprises a circumferential groove at a first axial end of the radially inner bearing and the at least one axially extending projection is located in the groove and extends axially less than or up to an axial end face of the radially inner bearing ring.

11. A bearing assembly comprising:
a radially outer bearing ring including a radially outer race on a radially inner surface;
a radially inner bearing ring including a radially inner race on a radially outer surface and a notch;
a plurality of rolling elements supported to roll between the radially outer race and the radially inner race;
a shaft including a first plurality of teeth on a radially outer surface of the shaft; and
a washer defined by a flat disk body defining a radial outermost edge and a radial innermost edge, the disk body extending in a radial plane and including an axial projection configured to engage the notch of the radially inner bearing ring, and a second plurality of teeth configured to engage the first plurality of teeth of the shaft, the axial projection and the second plurality of teeth are both defined along the radial innermost edge of the disk body and the axial projection and the second plurality of teeth are spaced radially inward from the radial outermost edge of the flat disk body, the axial projection extending axially from the radial plane of the disk body, and the second plurality of teeth extending radially inwardly from the disk body and aligned with the radial plane of the disk body.

12. The bearing assembly of claim 11 , wherein the axial projection is circumferentially spaced in between the second plurality of teeth.

Assignees

• Schaeffler Technologies Ag

Inventors

• Carr Stephen
• Tate Shaun
• Eastman Michael

Classifications

• F16C2361/61

  Toothed gear systems, e.g. support of pinion shafts · CPC title

• F16C35/0635 Primary

  the bore of the inner ring being of special non-cylindrical shape which co-operates with a complementary shape on the shaft, e.g. teeth, polygonal sections · CPC title

• F16C19/364

  with tapered rollers, i.e. rollers having essentially the shape of a truncated cone · CPC title

• F16C2226/80

  with splines, serrations or similar profiles to prevent movement between joined parts · CPC title

• F16C33/586

  outside the space between the races, e.g. end faces or bore of inner ring · CPC title