Wheel bearing unit

Abstract

Wheel bearing units are disclosed. In one example, a wheel bearing unit includes an outer ring element and an inner ring element, between which there are arranged at least two rolling body rows. The inner ring element may have a radial flange which is fastenable to an axle body or to a wheel. The radial flange and/or the inner ring element may have at least one projection on a surface facing toward the outer ring element.

Claims

1. A wheel bearing unit comprising: an outer ring element and an inner ring element, between which there are arranged at least two rolling body rows; wherein the inner ring element has a radial flange which is fastenable to an axle body or to a wheel; wherein the radial flange and/or the inner ring element has at least one projection on a surface facing toward the outer ring element; and wherein the at least one projection has a coating.

2. The wheel bearing unit as claimed in claim 1, wherein the at least one projection on the surface is formed as a ring segment.

3. The wheel bearing unit as claimed in claim 1, wherein the at least one projection is formed integrally on the radial flange and/or on the inner ring element.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Embodiments of the disclosure will be presented below on the basis of two figures. In the figures:

(2) FIG. 1 shows a longitudinal section through a wheel bearing unit according to the disclosure,

(3) FIG. 2 is an illustration of an outer ring element of the wheel bearing unit shown in FIG. 1.

DETAILED DESCRIPTION

(4) FIG. 1 shows a wheel bearing unit 1 according to one embodiment, which wheel bearing unit is assigned to a vehicle wheel (not illustrated). The wheel bearing unit 1 comprises an outer ring element 2 and an inner ring element 3. The inner ring element 3 has a radial flange 4, which is fastenable to a wheel or axle body (not illustrated in any more detail). Furthermore, the wheel bearing arrangement has two axially spaced-apart rolling body rows 5, 6, the rolling bodies of which are guided at the outside in the outer ring element 2. At the inside, the rolling bodies of the rolling body row 5 are guided directly in a raceway of the inner ring element 3, and the rolling bodies of the rolling body row 6 are guided in an inner ring 7 fixed to the inner ring element 3.

(5) For the more detailed explanation of a first embodiment, reference is made below to FIG. 2. A surface 8, which faces toward the outer ring element 2, of the inner ring element 3 and of the radial flange 4, respectively, has at least one projection 9. As can be seen in FIG. 2, the face surface 8 has a projection 9 which is formed as a ring segment. Here, the projection 9 is formed integrally, that is to say in one piece, on the inner ring element 3 and the radial flange 4, respectively.

(6) In certain driving situations, for example when driving over a pothole or against a curbstone, axial and/or radial shocks may act on the wheel bearing unit. Said shocks have the effect that the inner ring element 3 and/or the radial flange 4 make contact with the outer ring element 2. The projection 9 provided in the wheel bearing unit 1 according to the disclosure is designed such that, in the event of an axial or radial shock of the inner ring element 3 and/or radial flange 4, said projection absorbs the force that acts as a result, and dissipates said force in order to prevent damage to the rolling bearing and/or to the raceways. Here, in the event of an axial or radial shock, contact is made only with the projection 9. The disclosure is however not restricted to a single projection 9.

LIST OF REFERENCE DESIGNATIONS

(7) 1. Wheel bearing unit 2. Outer ring element 3. Inner ring element 4. Radial flange 5. Rolling body row 6. Rolling body row 7. Inner ring 8. Surface 9. Projection