Sealing arrangement for a wheel bearing arrangement of a motor vehicle

Abstract

A seal arrangement for a wheel bearing arrangement of a motor vehicle, including a seal body having a sealing lip, wherein the seal body is arranged on a fixed component of the wheel bearing arrangement and the sealing lip abuts a sealing surface of a rotating component of the wheel bearing arrangement. The disclosure is distinguished in that a film is applied to the sealing surface.

Claims

1. A seal arrangement for a wheel bearing arrangement of a motor vehicle, comprising: a seal body having a plurality of sealing lips, wherein the seal body is arranged on a fixed component of the wheel bearing arrangement and at least one sealing lip abuts a sealing surface of a rotating component of the wheel bearing arrangement, wherein a film is applied to the sealing surface; and wherein the film is connected to the sealing surface via an adhesive and/or a friction-locked connection, wherein the film co a first of the plurality of sealing lips but does not contact a second of the plurality of sealing lips, and wherein the fixed component of the wheel bearing arrangement is a fixed bearing ring of a roller bearing and the rotating component of the wheel bearing arrangement having the sealing surface is a wheel hub, the wheel hub comprising a circumferential groove, wherein the circumferential groove comprises a recess extending in the axial direction, wherein a base of the recess forms the sealing surface.

2. The seal arrangement as claimed in claim 1, wherein the film has a layer thickness (d) of ≤0.3 mm.

3. The seal arrangement as claimed in claim 2, wherein the film is made of plastic, metal, or composite material.

4. The seal arrangement as claimed in claim 2, wherein the film has a surface quality having a roughness depth (Rz) of Rz<10 μm.

5. The seal arrangement as claimed in claim 1, wherein the friction-locked connection is produced by means of shrinking.

6. The seal arrangement as claimed in claim 5, wherein the film is made of plastic, metal, or composite material.

7. The seal arrangement as claimed in claim 5, wherein the film has a surface quality having a roughness depth (Rz) of Rz<10 μm.

8. The seal arrangement as claimed in claim 1, wherein the film is made of plastic, metal, or composite material.

9. The seal arrangement as claimed in claim 8, wherein the film has a surface quality having a roughness depth (Rz) of Rz<10 μm.

10. The seal arrangement as claimed in claim 1, wherein the film has a surface quality having a roughness depth (Rz) of Rz<10 μm.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a side view of a seal arrangement for a wheel bearing arrangement of a motor vehicle according to the prior art;

(2) FIG. 2 shows an enlarged illustration of the circled detail from FIG. 1; and

(3) FIG. 3 shows an embodiment according to the invention of the seal arrangement.

DETAILED DESCRIPTION

(4) FIG. 1 shows a wheel bearing arrangement of a motor vehicle identified as a whole by the reference numeral 10. In a known manner, a wheel hub 12 is rotatably mounted via a roller bearing 14. The wheel hub 12 in turn has a drive connection to an articulated shaft 18.

(5) In this case—as shown in FIG. 1 and FIG. 2—a seal arrangement identified as a whole by the reference numeral 100 is arranged between the rotating part of the wheel bearing arrangement 10, the wheel hub 12 here, and the fixed component of the wheel bearing arrangement 10, the fixed bearing ring 14-1 of the roller bearing 14 here.

(6) The seal arrangement 100 comprises a seal body 110 having two sealing lips 112, which is formed from elastomer and is mounted on the fixed bearing ring 14-1 of the roller bearing 14. As can be seen in particular in FIG. 2, the sealing lips 112 abut under pre-tension a flinger plate 114, which is arranged in a groove 20 of the wheel hub 12, is fastened in a rotationally-fixed manner to the wheel hub 12, and is made of stainless steel. That is, the sealing lips 112 are in sliding contact with the rotating sealing surface 116 formed on the flinger plate.

(7) A disadvantage of the prior art is in particular that, due to the flinger plate 114, the seal arrangement 100 is expensive to produce (installation of the flinger plate), and that the flinger plate 114 requires a comparatively large amount of installation space in the axial and radial direction a, r.

(8) As FIG. 3 shows, the groove base 20-1 of the groove 20 in the wheel hub 12 is provided with a film 118. That is, the sealing lips 112 are in sliding contact with the film 118 forming the rotating sealing surface 116. In the present case, the film 118 is a film made of a composite material having a layer thickness <0.2 mm, which was fastened by means of adhesive bonding and thus particularly inexpensively to the groove base 20-1 of the groove 20 of the wheel hub 12.

(9) By means of the film 118, the friction-optimized adjustment of the sealing elements sealing lips 112 and sealing surface 116 necessary for an optimal sealing effect is now advantageously possible in a simple manner.

(10) For the sake of completeness, it is to be noted that the groove 20 can now also be made significantly smaller both in the axial direction a and in the radial direction r, so that the seal arrangement 100 according to the invention also requires significantly less installation space.