Cage for a rolling bearing, notably for a motor vehicle electric power steering bearing
AssigneeAktiebolaget Skf
InventorsThierry Adane, Thomas Perrotin, Laurent Varnoux
Life of this patent
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Abstract
Cage for a rolling bearing comprising a plurality of pockets (13) for a plurality of rolling elements (4), at least one pocket (13) being of ellipsoidal shape and provided with means (14) of axial retention of the cage (10) on the corresponding rolling element (4), the ellipse defining the said ellipsoidal pocket (13) being determined by a major axis (A) situated in the circumferential plane of the cage (10) and a minor axis (B) in the axial direction of the cage (10). The minor axis (B) is comprised between the major axis (A) and the diameter (D) of the rolling element (4) arranged in the said ellipsoidal pocket (13).
Claims11
A cage for a rolling bearing comprising:
- a plurality of pockets (13, 21, 31) for a plurality of rolling elements (4), at least one pocket (13) being of ellipsoidal shape and provided with means (14, 25, 33) of axial retention of the cage (10, 20, 30, 40) on a corresponding one of the rolling elements (4), the ellipse defining the ellipsoidal pocket (13) being determined by a major axis (A) situated in the circumferential plane of the cage (10, 20, 30, 40) and a minor axis (B) in the axial direction of the cage (10, 20, 30, 40), wherein
- the minor axis (B) is comprised between the major axis (A) and the diameter (D) of the rolling element (4) arranged in the said ellipsoidal pocket (13).
A rolling bearing comprising:
- an inner ring (3),
- an outer ring (2),
- at least one row of rolling elements (4) arranged between the rings (2, 3), and
- a cage (10, 20, 30, 40) having;
- a plurality of pockets (13, 21, 31) for a plurality of rolling elements (4), at least one pocket (13) being of ellipsoidal shape and provided with means (14, 25, 33) of axial retention of the cage (10, 20, 30, 40) on a corresponding one of the rolling elements (4), the ellipse defining the ellipsoidal pocket (13) being determined by a major axis (A) situated in the circumferential plane of the cage (10, 20, 30, 40) and a minor axis (B) in the axial direction of the cage (10, 20, 30, 40), wherein
- the minor axis (B) is comprised between the major axis (A) and the diameter (D) of the rolling element (4) arranged in the said ellipsoidal pocket (13).
An electric power steering device for a motor vehicle comprising:
- at least one rolling bearing (1) providing;
- an inner ring (3),
- an outer ring (2),
- at least one row of rolling elements (4) arranged between the rings (2, 3), and
- a cage (10, 20, 30, 40) having;
- a plurality of pockets (13, 21, 31) for a plurality of rolling elements (4), at least one pocket (13) being of ellipsoidal shape and provided with means (14, 25, 33) of axial retention of the cage (10, 20, 30, 40) on a corresponding one of the rolling elements (4), the ellipse defining the ellipsoidal pocket (13) being determined by a major axis (A) situated in the circumferential plane of the cage (10, 20, 30, 40) and a minor axis (B) in the axial direction of the cage (10, 20, 30, 40), wherein
- the minor axis (B) is comprised between the major axis (A) and the diameter (D) of the rolling element (4) arranged in the said ellipsoidal pocket (13).
Dependencies are inferred from the claim text.