Cage element for rolling bearing assembly

Patent metadata

Field	Value
Publication number	US-9556908-B2
Application number	US-201514678088-A
Country	US
Kind code	B2
Filing date	Apr 3, 2015
Priority date	Apr 3, 2015
Publication date	Jan 31, 2017
Grant date	Jan 31, 2017

Abstract

An improved cage element for a cage arrangement in a rolling bearing assembly including rolling elements is provided. The cage element includes a cylindrical middle portion, a first end portion including a first concave outer surface shaped to support a rolling element, and a second end portion including a second concave outer surface shaped to support the rolling element. The first and second end portions are arranged on opposite ends of the cylindrical middle portion, and the first and second concave outer surfaces have identical curvatures.

First claim

What is claimed is:

1. A cage element for a cage arrangement in a rolling bearing assembly including rolling elements, the cage element comprising:
an H-shaped body including a cylindrical middle portion a first end portion including a first concave outer surface shaped to support a rolling element and a second end portion including a second concave outer surface shaped to support the rolling element, the first and second end portions defining opposite sides of the H-shaped body and the middle portion defining a connector of the opposite sides of the H-shaped body; and
the first and second end portions are arranged on opposite ends of the cylindrical middle portion, and the first and second concave outer surfaces have identical curvatures.

2. The cage element of claim 1 , further comprising a first flexible connection area between the cylindrical middle portion and the first end portion, and a second flexible connection area between the cylindrical middle portion and the second end portion.

3. The cage element of claim 1 , wherein the cage element includes a common through opening that extends continuously through the middle portion and between the first and second concave outer surfaces of the first and second end portions.

4. The cage element of claim 3 , wherein the first and second end portions each include at least two through openings extending continuously between the first and second end portions that are distinct from the common through opening.

5. A rolling bearing assembly comprising:
a radially inner ring defining a radially inner raceway;
a radially outer ring defining a radially outer raceway;
a plurality of rolling elements supported between the radially inner raceway of the radially inner ring and the radially outer raceway of the radially outer ring; and
a cage arrangement formed by a plurality of cage elements, each of the plurality of cage elements arranged between adjacent ones of the rolling elements and including: an H-shaped body including, a first end portion and a second end portion defining opposite sides of the H-shaped body and a middle portion defining a connector of the opposite sides of the H-shaped body, the middle portion extends circumferentially and the end portions are arranged on opposite ends of the middle portion, and the first and second end portions each include a concave outer surface that is shaped to support a respective one of the plurality of rolling elements.

6. The rolling bearing assembly of claim 5 , wherein each one of the concave outer surfaces are continuous between outer edges of the end portions and has a complementary shape to one of the rolling elements.

7. The rolling bearing assembly of claim 5 , wherein the first and second end portions each have a larger cross-sectional area than a cross-sectional area of the middle portion.

8. The rolling bearing assembly of claim 5 , wherein each one of the cage elements includes at least one through opening extending from at least one of the concave outer surfaces through the first or second end portion.

9. The rolling bearing assembly of claim 5 , wherein the first and second end portions each include at least two through openings, and each one of the cage elements includes a common through opening that extends continuously through the middle portion and between the concave outer surfaces of the first and second end portions.

10. The rolling bearing assembly of claim 5 , wherein a number of the rolling elements in the rolling bearing assembly is equal to a number of the cage elements in the rolling bearing assembly.

11. The rolling bearing assembly of claim 5 , wherein each of the concave outer surfaces of the cage elements extends approximately 20% of a pitch diameter of a respective one of the rolling elements.

12. The rolling bearing assembly of claim 5 , wherein the first and second end portions are identical.

13. The rolling bearing assembly of claim 5 , wherein the rolling elements are spherical rolling elements.

14. The rolling bearing assembly of claim 5 , wherein the cage elements are formed from plastic.

15. The rolling bearing assembly of claim 5 , wherein the middle portion is cylindrical and intersects each of the end portions in a respective medial region of the end portions.

16. The rolling bearing assembly of claim 5 , wherein the first end portion and the second end portion are each configured to support a pitch diameter of each respective one of the plurality of rolling elements.

Assignees

• Schaeffler Technologies Ag

Inventors

• Heaton Michael

Classifications

• F16C19/26

  with a single row of rollers · CPC title

• F16C33/51 Primary

  formed of unconnected members · CPC title

• F16C33/4676

  of the stays separating adjacent cage pockets, e.g. guide means for the bearing-surface of the rollers · CPC title

• F16C33/6629 Primary

  Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements · CPC title

• F16C19/06

  with a single row or balls · CPC title