WHEEL HUB ARRANGEMENT FOR A MOTOR VEHICLE

Abstract

A wheel hub arrangement for a motor vehicle, provided with a hub which is rotatably mounted by a wheel bearing for the attachment of a wheel. A shaft, which is formed separately from the wheel hub, is non-rotatably coupled to the wheel hub. At the same time a first receiving section of a sealing receptacle is formed in the wheel hub in which is arranged a shaft, in which a sealing device is arranged which engages a second receiving section of the sealing receptacle formed in the axial direction with respect to an axis of rotation of the wheel hub, adjacent to the first receiving section.

Claims

1. A wheel hub arrangement for a motor vehicle, comprising: a wheel hub which is rotatably mounted by a wheel bearing for the attachment of a wheel, wherein a shaft, formed separately from the wheel hub, is non-rotatably coupled to the wheel hub, wherein a first receiving section of a sealing receptacle is formed in the wheel hub, in which is arranged a sealing device, which engages in the second receiving section of the sealing receptacle adjacent to the first receiving section of the sealing receptacle adjoining the first receiving section in the axial direction with respect to the rotational axis of the wheel hub formed in the shaft.

2. The wheel hub arrangement according to claim 1, wherein the shaft is provided on its side facing the wheel hub with a shaft pin engaged in the wheel hub, in particular with a shaft pin which is connected to a joint hub of a synchronous joint or a cardan joint.

3. The wheel hub arrangement according to claim 2, wherein the shaft, and the shaft pin, is provided with toothing for non-rotatable coupling to the wheel hub, which meshes with the counter-toothing of the wheel hub.

4. The wheel hub arrangement according to claim 1, wherein the first receiving section completely engages the wheel hub in the axial direction.

5. The wheel hub arrangement according to claim 1, wherein the sealing device is sealingly arranged on an inner circumferential surface of the wheel hub, in particular with a first sealing projection.

6. The wheel hub arrangement according to claim 5, wherein the sealing device is sealingly arranged on an inner circumferential surface of the shaft, in particular with a second sealing projection.

7. The wheel hub arrangement according to claim 6, wherein the shaft pin is designed as a hollow pin and the inner circumferential surface is present in the shaft pin.

8. The wheel hub arrangement according to claim 1, wherein the sealing device projects beyond the wheel hub on a side facing away from the shaft and is provided therein with radial projection for the formation of a rim cap, which projects in a radial direction over the first receiving section.

9. The wheel hub arrangement according to claim 1, wherein the shaft is fixed in the axial direction by a fixing means with respect to the wheel hub, which is different from the sealing device.

10. The wheel hub arrangement according to claim 1, wherein the second receiving section completely engages the shaft in the axial direction.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0028] The invention will be explained next in more detail with reference to the embodiment illustrated in FIG. 1, without limiting the invention in this manner, wherein the single FIGURE shows the following:

[0029] FIG. 1 may show a schematic longitudinal sectional view of a wheel hub arrangement for a motor vehicle.

DETAILED DESCRIPTION OF THE DRAWING

[0030] FIG. 1 shows a schematic longitudinal sectional view of a wheel hub arrangement 1 for a motor vehicle. The wheel hub arrangement 1 is provided with a wheel hub 2, to which can be attached a wheel rim 3 of a wheel 4 of the motor vehicle. For example, the rim cap 3 is provided with a wheel hub receptacle 5, while the wheel hub 2 is provided with a wheel rim seat 6. After the wheel 4 has been mounted on the wheel hub 2, the wheel hub 2 is engaged with its wheel rim seat 6 in the wheel hub receptacle 5 of the wheel rim 3. In addition, a brake disc 7 can be arranged on the wheel hub 2, by means of which the wheel 4 can be braked. The wheel hub 2 is rotatably mounted by means of a wheel bearing 8, namely with respect to a wheel carrier, not shown. The wheel bearing 8 is in the embodiment shown here designed as a multi-row roller bearing, in particular as a two-row roller bearing. Accordingly, it is provided with roller elements 11 arranged between an inner ring 9 and an outer ring 10.

[0031] Similarly, a component of the wheel hub arrangement 1 is a shaft 12, which is provided as a component of a joint shaft. Accordingly, the shaft 12 is provided with a joint hub 13, which is in particular located on the side of the shaft 12 facing away from the wheel hub 2. The joint hub 13 is for example a component of a synchronous joint or a cardan joint. The shaft 12 is formed separately from the wheel hub 2 and it is non-rotatably coupled to it. In the embodiment shown here, the shaft 12 engages in the wheel hub 2, in particular with a shaft pin or with a joint shaft pin.

[0032] In order to realize rotationally fixed coupling of the shaft 12 with respect to the wheel hub 2, an outer toothing of the shaft 12 (not shown here) meshes with an inner toothing (not shown here) of the wheel hub 2. The outer toothing is provided for example on the shaft pin. A fixing means 15 is provided in order to additionally fix the shaft in the axial direction with respect to the rotational axis 14 of the wheel hub. The means is here provided in the form of a snap spring 16, which engages on one side in a receptacle 17 of the shaft 12, and on the other side in a receptacle 18 of the wheel hub 2. The receptacle 17 in this case thus engages an outer circumferential surface of the shaft 12, while the receptacle 18 engages an inner circumferential surface of the wheel hub 2.

[0033] In the wheel hub 2 is formed a first receiving section 19 of a sealing receptacle 20. In this receiving section 19 is arranged a sealing device 21, which extends to the second receiving section 22 of the sealing receptacle 20 adjacent to the first receiving section 19. The second receiving section 22 of the sealing receptacle 20 is formed in the shaft 12, or more specifically at least partially in the shaft pin. Preferably, the first receiving section 19 engages the wheel hub 2, and/or the second receiving section 22 fully engages the shaft 12 or the shaft pin in the axial direction.

[0034] The sealing device 21 is provided with a basic body 23, which has a cross-section that can be for example round, seen in the direction of the rotational axis 14. A first sealing projection 24 extends from the basic body 23, which is provided for example in the form a sealing lip. The first sealing projection abuts an internal circumferential surface 25 of the wheel hub 2, which the first receiving section 19 of the sealing receptacle 20 delimits in the radial direction. For example, the sealing projection 24 is angled with respect to the rotational axis 14 seen in the longitudinal cross-section, in particular in such a way that it is inclined in the radially outward direction away from the shaft 12.

[0035] In addition or as an alternative, a second sealing projection 26 is provided, which also extends outwardly in the radial direction from the basic body 23. The second sealing projection 26 rests against a circumferential surface 27 of the shaft 12, whereby the inner circumferential surface 27 is preferably present in the shaft pin. Analogously to the first sealing projection 24, the second sealing projection can be inclined with respect to the rotational axis 14, in particular in the direction away from the shaft 12, or in the direction toward the wheel rim 3. Both the first sealing projection 24 and the second sealing projection 26 are sealingly arranged on the respective inner circumferential surface 25 or 27, in particular in the circumferential direction. The first sealing projection 24 is in addition arranged at a distance from the shaft 12 in the axial direction, or it is arranged at a distance from the shaft 12 in the axial direction on the inner circumferential surface 25 of the wheel hub 2.

[0036] The sealing device 21 is provided on its side facing away from the shaft 12 with a radial projection 28, which forms a rim cap 29. The radial projection 28 is preferably provided with a round cross-section. It can be designed in such a manner that it sealingly rests against an inner circumferential surface 30 of the wheel hub receptacle 5 of the wheel rim 3, in particular continuously in the circumferential direction. However, it can also project beyond the wheel rim 3 in the direction facing away from the shaft 12 and it can be sealing arranged on a front side surface 31 of the wheel rim 3. The first sealing projection 24 is additionally arranged at a distance from the shaft 12 seen in the axial direction on the inner circumferential surface 25 of the wheel hub 2.

[0037] The sealing device 21 is on its side facing away from the shaft 12 provided with a radial projection 28 which forms a rim cap 29. The radial projection 28 is preferably round seen in profile. It can be designed in such a way that it abuts an inner circumferential surface 30 of the wheel hub receptacle 6 of the wheel rim 3, in particular continuously in the circumferential direction. However, it can also protrude beyond the wheel rim 3 in the direction facing away from the shaft 12 so that it sealingly rest against a front side face 31 of the wheel cap 3. In any case, the rim cap 29 closes the wheel hub receptacle 5 in the direction away from the wheel hub 2.

[0038] Accordingly, it has larger dimensions in the radial direction than the first receiving section 19 of the sealing receptacle 20, or it has at least the same size.

[0039] The wheel hub arrangement 1 described here has the advantage that it provides extreme weight savings, while in addition to that, it is also very easy to install. Since the shaft 12 is fixed with respect to the wheel hub 2 in the axial direction by means of the fixing means 15, the sealing device 21 can be arranged in the sealing receptacle 20. The sealing device 21 in this case preferably consists of a sealing material, or at least a material that has a smaller sealing characteristics than the material of the wheel hub 2 and/or the material of the shaft 12. For this reason and also due to the smaller dimensions of the sealing device 21 in the radial direction, in particular of the basic body 23, a very low weight is achieved. In addition, the shaft pin of the shaft 12 is hollow, at least in some sections, preferably continuously, and it is therefore provided as a hollow pin.