Insulating cap for bearing assembly

Patent metadata

Field	Value
Publication number	US-11767884-B2
Application number	US-202117501441-A
Country	US
Kind code	B2
Filing date	Oct 14, 2021
Priority date	Oct 14, 2021
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

A bearing assembly is disclosed herein. The bearing assembly includes an outer bearing ring including at least one first connection element. The assembly also includes a cap defining an axial portion and at least one radial portion defining a cavity configured to receive the outer bearing ring. The cap includes at least one second connection element configured to mate with the at least one first connection element. The cap is formed from an electrically insulating material to prevent EDM.

First claim

What is claimed is:

1. A bearing assembly comprising:
an outer bearing ring including at least one first connection element; and
a cap including an axial portion and at least one radial portion defining a cavity configured to receive the outer bearing ring, the cap including at least one second connection element configured to mate with the at least one first connection element, wherein the cap is formed from an electrically insulating material;
wherein the at least one first connection element comprises one of an axially extending groove or an axially extending rib, and the at least one second connection element comprises the other of an axially extending groove or an axially extending rib;
wherein the outer bearing ring further comprises at least one additional first connection element, and the cap further comprises at least one additional second connection element; and
wherein the at least one additional first connection element is formed as one of a post or a receptacle on an axial end face of the outer bearing ring, and the at least one additional second connection element is formed as the other one of a post or a receptacle on an axial end face of the cap.

2. The bearing assembly according to claim 1 , wherein the cap is formed from plastic.

3. The bearing assembly according to claim 1 , wherein the at least one first and second connection elements comprise mating spiral screws.

4. The bearing assembly according to claim 1 , further comprising a face cover arranged on a first axial end of the outer bearing ring and the cap.

5. The bearing assembly according to claim 4 , wherein the cap contacts an entire radially outer surface of the outer bearing ring and a second axial end of the outer bearing ring opposite from the face cover.

6. The bearing assembly according to claim 1 , wherein the cap and the outer bearing ring are configured to be attached to each other via application of at least one of rotational force or axial force to at least one of the cap or the outer bearing ring.

7. The bearing assembly according to claim 1 , wherein the cap surrounds an entire radially outer surface of the outer bearing ring.

8. The bearing assembly according to claim 1 , wherein the cap contacts an entire axial end face of the outer bearing ring.

9. The bearing assembly according to claim 1 , wherein the cap is formed from: polyamide, glass fiber reinforced polyphenylene sulphide, polyetheretherketone (PEEK), or a composite resin of phenol and aldehyde.

10. A bearing assembly comprising:
an outer bearing ring including at least one first connection element; and
a cap including an axial portion and at least one radial portion defining a cavity configured to receive the outer bearing ring, the cap including at least one second connection element configured to mate with the at least one first connection element, wherein the cap is formed from an electrically insulating material;
a face cover arranged on a first axial end of the outer bearing ring and the cap; and wherein the face cover includes at least one first face cover connection element and at least one second face cover connection element, wherein the at least one first face cover connection element is configured to engage with the cap and the at least one second face cover connection element is configured to engage with the outer bearing ring.

11. The bearing assembly according to claim 10 , wherein the at least one first face cover connection element includes one of a tab or a groove, and the cap includes the other of a tab or a groove configured to engage with the at least one first face cover connection element.

12. The bearing assembly according to claim 10 , wherein the at least one second face cover connection element includes one of a protrusion or a receptacle, and
the outer bearing ring includes the other of a protrusion or a receptacle configured to engage with the at least one second face cover connection element.

13. A bearing assembly comprising:
an outer bearing ring including at least one first connection element; and
an electrically insulating cap defining a cavity configured to receive the outer bearing ring, the cap including at least one second connection element configured to mate with the at least one first connection element, wherein the cap and the outer bearing ring are configured to be connected to each other via application of at least one of rotational force or axial force to at least one of the cap or the outer bearing ring; and
a face cover arranged on a first axial end of the outer bearing ring and the cap;
wherein the face cover includes at least one first face cover connection element and at least one second face cover connection element, wherein the at least one first face cover connection element is configured to engage with the cap and the at least one second face cover connection element is configured to engage with the outer bearing ring.

14. The bearing assembly according to claim 13 , wherein the at least one first and second connection elements comprise mating spiral screws, and the cap and the outer bearing ring are connected to each other via application of rotational force to either the cap or the outer bearing ring.

15. The bearing assembly according to claim 13 , wherein the at least one first connection element comprises a first one of an axially extending groove or an axially extending rib, and the at least one second connection element comprises a second one of an axially extending groove or an axially extending rib, wherein the cap and the outer bearing ring are connected to each other via application of axial force to either the cap or the outer bearing ring.

16. The bearing assembly according to claim 13 , wherein the cap surrounds an entire radially outer surface of the outer bearing ring, and the cap contacts an entire axial end face of the outer bearing ring.

17. The bearing assembly according to claim 13 , wherein the at least one first face cover connection element includes one of a tab or a groove, and the cap includes the other of a tab or a groove configured to engage with the at least one first face cover connection element, and
wherein the at least one second face cover connection element includes one of a protrusion or a receptacle, and the outer bearing ring includes the other one of a protrusion or a receptacle configured to engage with the at least one second face cover connection element.

Assignees

• Schaeffler Technologies Ag

Inventors

• Zhong Guihui
• Kottapalli Venkata
• Heaton Michael
• Tate John
• Schwab Charles

Classifications

• F16C35/077 Primary

  between housing and outer race ring · CPC title

• F16C33/586

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

• F16C35/042

  Housings for rolling element bearings for rotary movement · CPC title

• F16C41/00 Primary

  Other accessories, {e.g. devices integrated in the bearing not relating to the bearing function as such} · CPC title

• F16C2202/30

  Electric properties; Magnetic properties · CPC title