Bearing unit
AssigneeNsk Ltd.
InventorHironari Sakoda
Life of this patent
Estimating the term…
Abstract
An outer ring (2) is provided with a stationary ring-side flange (2a) along a circumferential direction. The stationary ring-side flange (2a) is provided with a plurality of mounting holes (2b) which is arranged at unequal intervals and which is used to fasten the outer ring (2) to a knuckle (N) through knuckle bolts (Bt). The stationary ring-side flange (2a) includes first flange part (30) located in a region in which a distance between adjacent mounting holes (2b) is larger and second flange part (40) located in a region in which a distance between adjacent mounting holes (2b) is smaller. A radial thickness of the first flange part (30) is a greater than a radial thickness of the second flange part (40).
Claims1
A bearing unit comprising:
- an annular stationary ring mounted to a vehicle body-side component and to be held in a non-rotating state, and
- a rotating ring provided to face the stationary ring, and configured to rotate together with a wheel-side component mounted thereto,
- wherein the stationary ring is provided with a mounting flange along a circumferential direction,
- wherein the mounting flange is provided with a plurality of mounting holes which are arranged at unequal intervals in the circumferential direction and which are used to fasten the stationary ring to the vehicle body-side component via bolts,
- wherein the mounting flange includes a first flange part located in a region in which a distance between the mounting holes adjacent in the circumferential direction is of a first dimension, and a second flange part located in a region in which the distance between the adjacent mounting holes is of a second dimension which is smaller than the first dimension
- wherein a radial thickness of the first flange part is greater than a radial thickness of the second flange part,
- wherein a surface of the first flange part facing the vehicle body-side component is provided with a thickness-reduced portion to reduce a contact area with a mounting surface of the vehicle body-side component,
- wherein the thickness-reduced portion has a concave shape, such that the surface of the first flange part contacts the mounting surface of the vehicle body-side component around the entire periphery of the thickness-reduced portion, and
- wherein an axial thickness of the first flange part is greater than an axial thickness of the second flange part.
Dependencies are inferred from the claim text.