WO2008128515A1

WO2008128515A1 - Bearing arrangement of a motor vehicle wheel hub driveable via a rotational joint and method for the production thereof

Info

Publication number: WO2008128515A1
Application number: PCT/DE2008/000634
Authority: WO
Inventors: Raphael Fischer; Roland Langer; Peter Niebling
Original assignee: Schaeffler Kg
Priority date: 2007-04-20
Filing date: 2008-04-16
Publication date: 2008-10-30
Also published as: DE102007018803A1

Abstract

The invention relates to a bearing arrangement (1) of a wheel hub (2) of a motor vehicle, the wheel hub being driveable via a rotational joint (5), wherein the wheel hub (2) connected to a wheel flange (6) and an outer joint body (7) of the rotational joint (5) connected to a drive shaft are rotationally fixed to each other, the wheel hub having a radially inner lateral surface (18), which encloses a bell-shaped opening (19) expanding toward the joint (5), the outer joint body (7) of the joint (5) at least across part of the length thereof being inserted in said opening, wherein the outer contour of the outer joint body (7) corresponds substantially to the inner contour of the wheel hub, and wherein the outer joint body (7) is arranged at least partially radially beneath the rolling bearing (9). In order to enable a detachable connection between the wheel hub and rotational joint, it is provided that at least one face of the wheel hub (2) has a spur gear toothing (3, 3'), which can be rotationally fixed to a corresponding spur gear toothing (4, 4') of the outer joint body (7) of the rotational joint (5).

Description

Name of the invention

Bearing arrangement of a driven via a rotary hub of a motor vehicle and method for their preparation

description

Field of the invention

The invention relates to a bearing arrangement of a wheel hub of a motor vehicle which can be driven via a rotary joint, in which the wheel hub connected to a wheel flange and an outer joint body of the rotary joint connected to a drive shaft are connected to one another in a rotationally fixed manner, and to a double-row rolling bearing arranged on the wheel hub.

The wheel hub, in particular a journal of the wheel hub, has a radially inner circumferential surface which encloses a bell-shaped opening widening towards the joint into which the outer joint body of the joint is inserted at least part of its axial length, wherein the outer contour of the outer Hinge body substantially corresponds to the inner contour of the inner circumferential surface of the wheel hub, in particular of the pin of the wheel hub, and wherein the outer joint body is arranged ^~ 1 partially spaced radially below the rolling bearing. Furthermore, the invention relates to a method for producing such a bearing assembly.

Background of the invention

The drive of motor vehicle wheels is carried out at independent suspension known about propeller shafts between a transmission or a transfer case and the respective wheel bearing. The propeller shafts have constant velocity joints at both ends which allow simultaneous torque transmission during flexion of the shaft, for example during compression and / or steering. The wheel bearing is integrated in the wheel hub or connected to this. The constant velocity joint - referred to below as a swivel joint or just as a joint - is rotatably coupled to the wheel hub.

In front-powered motor vehicles, both operating states, namely steering and compression, come together in such a way that a comparatively large deflection angle, for example greater than 50 °, is established at the outer joint body or jointed joint of the joint directly connected to the wheel hub. In order to facilitate the handling of the vehicle when moving in a confined space, the manufacturers seek the largest possible Radeinschlagwinkel.

The maximum possible wheel steering angle is influenced on the one hand by the construction of the constant velocity joint, on the other hand by the adjusting flexion angle. Here, the flexion angle depends essentially on the length of the propeller shaft. A displacement of the articulation point of the propeller shaft toward the wheel can positively influence the maximum achievable Radeinschlag- angle and there are also proposals to move the joint as far as possible to the hub and even integrate into the hub, so that the axial length of the wheel hub and Swivel existing bearing assembly can be reduced to a minimum.

For example, proposed solutions are known in which the constant velocity joint is permanently connected to the wheel bearing. Structures of this type are referred to as wheel bearings of the 4th generation and are described for example in DE 101 29 709 A1, in which the outer part of the constant velocity joint is axially extended. In this extension, contours for radially outwardly directed projections or toothing are introduced or formed. These projections of the outer part are axially inserted during assembly in corresponding recesses in the inner ring flange and positively centered about these recesses. Since the loaded by the balls of the constant velocity joint area of the grooves is the inner ring flange with distance, no forced forces in the outer part between the running grooves of the constant velocity joint arise because the manufacturing tolerances in the outer part can be compensated elastically in operation. Brake disc and rim are centered over the inner ring flange and run largely impact-free. As a further advantage of the radial projections in the axially extended portion of the outer part of the constant velocity joint is called that the driving and driven torque is introduced into the inner ring flange at the point at which the flange is directed radially outward.

An advantage of these constructions is the above-described improvement of the Radeinschlagwinkels, disadvantageous is the large radial space requirement and, as a result of the permanent connection, the necessary replacement of the entire bearing assembly in case of damage.

In DE 29 03 229 A1 a wheel bearing with integrated constant velocity joint is shown. The drive torque is transmitted via an axial extension of the outer part of the constant velocity joint frictionally engaged on the inner ring flange. The disadvantage of this arrangement is that over this exact no impact guide the brake disc and the rim is possible because both parts are centered on the axial extension of the outer part. Again, a large radial space requirement is unavoidable, since the wheel bearing extends over the entire joint bell.

Finally, from DE 30 17 757 C2 a generic type bearing assembly is known in which it is provided that the outer joint body of the joint is provided on its side facing the bearing with an outer surface whose cross-section deviates from the circular cross-section, and that the inner ring on his Joint-facing side is provided with a deviating from the circular cross-section inner surface, wherein the free space between the inner ring and the outer surface of the outer joint body is filled with a filler for the positive connection.

It should be advantageous in this embodiment that the expensive rolling bearing material is not used as a hinge material. In addition, a tube or sheet material can be used as the starting material for the outer joint part by this tube is expanded and used to receive the torque-transmitting balls. In this case, the resulting during production outer contour of the joint is used for torque transmission. This simple to manufacture joint outer part is received in the opening of the inner bearing ring, wherein the remaining space between the joint and inner bearing ring is filled with a filler, so that a positive connection of the two elements is formed. In this type of production, machining processes can be kept to a minimum or the absolutely necessary machining operations need not be subjected to great accuracy in their tolerances. However, it is disadvantageous in this solution that the adhesive joint of wheel hub with swivel joint is not or only with difficulty to be solved, so that even with this bearing arrangement an exchange of individual components, namely wheel hub or swivel joint, is not readily possible. Object of the invention

The invention has for its object to provide a bearing assembly which eliminates the disadvantages. In particular, it is an object of the invention to provide a kurzbauende unit of the wheel hub, bearing assembly and swivel, in which the associated with a certain Radeinschlagwinkel bending angle of a constant velocity joint is reduced by displacement of the Gelenkwellenknickpunktes to the wheel out. At the same time the bearing assembly should be easy to maintain and as easy to assemble and disassemble.

Summary of the invention

The invention is based on the finding that the task can be solved in a surprisingly simple manner that the rotationally fixed connection of the wheel hub and the at least partially retracted into the hub outer hinge body of the rotary joint is effected by a spur gearing, which in corresponding and is incorporated with interconnected surfaces of the wheel hub and swivel joint.

The invention is therefore based on a bearing arrangement of a wheel hub of a motor vehicle which can be driven via a rotary joint, in which the wheel hub connected to a wheel flange and an outer joint body of the rotary joint connected to a drive shaft are connected to one another in a rotationally fixed manner, and with a double row rolling bearing arranged on the wheel hub. In this case, the double-row roller bearing or components thereof, in particular an inner ring or an inner raceway, integrally formed with the wheel hub or be connected as a separate part or separate parts with the hub. The wheel hub, in particular a journal of the wheel hub, has a radially inner circumferential surface which encloses a bell-shaped opening widening towards the joint, into which the outer joint body of the joint is inserted at least part of its axial length, the outer contour of the outer joint body substantially corresponds to the inner contour of the inner circumferential surface of the wheel hub, in particular of the pin of the wheel hub, and wherein the outer joint body is at least partially disposed radially below the rolling bearing.

In addition, it is provided in this bearing arrangement that at least one end face of the wheel hub, in particular of the pin of the wheel hubs, has a spur toothing, which is rotatably connected to a corresponding spur toothing of the outer joint body of the rotary joint.

By this construction is advantageously achieved that the joint bell is not only at least partially displaced within the wheel hub, but also the connection between the hub and the joint bell can be lifted in the simplest way.

A particular advantage of the solution according to the invention over previous bearing arrangements is above all the simple disassembly of the joint bell. This is achieved by the use of the spur toothing between the joint bell and hub. The connection is preferably biased and secured by an axial screw.

In this context, the decoupling of the load zones of the joint bell and rolling bearing has a positive effect. It prevents the transmission of deformations and also thermally separates the units mentioned. Another advantage is the high rigidity of the bearing arrangement, since on the one hand the pitch circle and thus the support base of the bearing is very large, on the other hand, the force is applied from the flange to the rows of balls as directly as possible. The inserted bells can be machined or through Forming be made.

It is thus created in a surprisingly simple manner, a bearing assembly of partially known individual components that builds narrow or short and in which also in a completely new way a simple and accurate mountability and disassembly is possible.

In further developments of the invention it can be provided that the spur toothing of the wheel hub, in particular of the pin of the wheel hub, in an axially outer and radially outwardly directed board, for example, a Wälznietbund is introduced.

It can also be provided that a narrow ring formed axially in the wheel hub on the joint side is present for forming or receiving the spur toothing in this. The spur toothing can be formed, for example after folding the ring by rolling rivets radially outward to a collar in the resulting federal government.

Likewise it can be provided that a circumferential bead (material thickening) formed axially in the wheel hub on the joint side is present, in which the spur toothing can be formed or formed.

These embodiments can be supplemented by the fact that a separate bearing inner ring is secured by the board in its position and biased. The tension of the separate inner ring can also be realized via a corresponding shape design of the joint body.

Preferably, it is provided in these embodiments that another, not in this case, separate inner ring is an integral part of the wheel hub, ie by the integral connection of this inner ring with the wheel hub is a raceway of a rolling element of the rolling bearing incorporated in the wheel hub. In other practical developments it can be provided that a bolt bearing against the wheel hub is screwed into a central threaded bore of the outer joint body and fixes the outer joint body axially on the wheel hub.

Also particularly advantageous is an embodiment of the invention, which is characterized in that a coaxially mounted on the bolt clamping plate is supported with its radially outer edge against a radially inwardly cantilevered rim of the wheel flange.

It is also within the scope of the invention to provide that the bolt is a hollow screw, which is screwed into a provided with an internal thread central opening of the outer joint body. The advantage of this solution lies in the fact that the hollow screw allows a direct force introduction from the hollow screw to the face gear.

The hollow screw can be made as a sheet metal forming part, thereby contributing to weight savings.

In addition, it can be provided that the hollow screw rests with an axially outer edge on a radially inwardly cantilevered rim or on a shoulder of the wheel hub.

It is judged to be particularly advantageous if it is provided that the spur toothing is formed in a wheel-side end region of the outer joint body and in a radially inner collar of the wheel hub. In this case, the spur gear is laid in the interior of the bearing assembly and in the interior of the hub. This can be advantageous, in particular with regard to a sealing of the serrations. It is also possible to combine an inner spur gear toothing with an outer spur gear toothing, that is to say to attach the spur toothings to two axially and radially spaced-apart regions of the bearing assembly.

In another practical development can be provided that the outer joint body is connected to a bellows, which rests axially at least on said collar of the wheel hub.

Also particularly advantageous is an embodiment of the invention, which is characterized in that the spur toothing is a Hirth toothing, in particular with radially extending teeth with a number of 20 to 100, in particular from 40 to 60, is. Likewise it can be provided that the serration is designed such that the teeth only partially, i. are formed on one or more areas on the scope of action. Furthermore, it can be provided that the teeth of the spur gear teeth are inclined to a plane perpendicular to the bearing axis.

The invention also relates to a method for producing a bearing assembly according to the invention.

In this method, a trained on the joint side axially formed in the wheel hub narrow ring is bent by Wälznieten radially outward to form a covenant in a training. In this collar then a spur gear is formed.

Alternatively, the spur toothing can be formed in a hinge-side axially formed in the wheel hub circumferential bead.

In this method can also be provided that the rolling bearing is mounted on the hub. For this purpose, for example, a separate bearing inner ring are pushed onto the wheel hub and a collar for axial Securing and bias of the separate bearing inner ring are formed by Wälznieten or another forming process. The assembly of the rolling bearing can take place prior to the formation of the spur toothing in the ring or in the bead or production of the narrow ring or bead or around the narrow ring, but also afterwards.

Thus, for example, be provided in a preferred development that first the roller bearing is mounted on the hub, that then pushed the separate bearing inner ring on the hub and the federal government for axial securing and bias of the separate bearing inner ring is formed by Wälznieten, and then the joint side axially the wheel hub an undercut is made while remaining a narrow ring, which is then bent by Wälznieten or another forming method radially outward to form a federal, in which finally the spur toothing is formed.

It is also within the scope of the invention to provide a further manufacturing method for the bearing assembly, that first the rolling bearing is mounted on the hub, then pushed the separate bearing inner ring on the hub and the federal government for axial securing and bias of the separate bearing inner ring by Wälznieten or another Forming process is formed, and that the joint side axially on the wheel hub a spherical bead is formed, in which finally the spur toothing is formed.

In a further embodiment it can be provided that the roller bearing (9) is mounted on the wheel hub (2), the separate bearing inner ring (15) pushed onto the wheel hub (2) and a collar (17) for axial securing and preloading the separate bearing Inner ring (15) is formed by Wälznieten. Subsequently, the spur toothing (3, 4) can be formed in the federal government. Furthermore, it can preferably be provided that the spur toothing is formed by means of a striker in the collar, the board or the bead.

Particularly preferably, it can be provided that the outer joint body is inserted axially into the opening for rotationally fixed connection of the rotary joint with the wheel hub until the spur gears of wheel hub and joint body engage with each other.

Furthermore, it can be provided that subsequently a screw bolt is screwed into a central threaded bore of the outer joint body.

In this case, a clamping plate mounted coaxially on the bolt may preferably be supported with its axially and radially outer edge against a rim of the wheel flange which projects radially inwards.

Brief description of the drawings

The invention will be explained in more detail below with reference to the accompanying drawings. It shows

Fig. 1 is a sectional view through a first embodiment of a

Bearing arrangement according to the invention,

Fig. 2 is a sectional view through a second embodiment of a

Bearing arrangement according to the invention,

3 is a sectional view through a third embodiment of a bearing assembly according to the invention, 4 shows a sectional view through a wheel hub according to FIG. 3 in the half-finished state, FIG.

5 is a sectional view through the hub of FIG. 3 in the finished state,

6 shows an alternative sectional view through the wheel hub according to FIG. 3 in the half-finished state, and FIG

7 shows an alternative sectional view through the wheel hub according to FIG. 3 in the finished state, FIG.

Fig. 8 is a sectional view of another embodiment of a

Bearing arrangement according to the invention.

Detailed description of the drawing

In the figures 1 to 9, a bearing assembly 1 is shown in longitudinal section, wherein the same reference numerals are used for the same components below.

In Fig. 1, a first embodiment of a bearing assembly 1 is shown in longitudinal section. The bearing assembly 1 has a wheel hub 2 of a motor vehicle, not shown. The wheel hub 2 is connected via a spur gear teeth 3, 4 with a rotary joint 5, for example a constant velocity joint. The wheel hub 2 has at one axial end a radially parked wheel flange 6 for receiving a wheel rim, not shown. The swivel joint 5 has, in a manner known per se, an outer joint body 7, which is shown only partially, and which on its inner lateral surface has only indicated raceways 8 for accommodating joint balls. The outer joint body 7 is also called a bell crank due to its external shape. As is known, a joint inner part (not shown), which likewise has raceways for receiving the joint balls on its outer lateral surface and is connected to a tubular portion of a propeller shaft, is known to belong to the swivel joint 5.

On the wheel hub 2, a double-row roller bearing 9 is arranged in the form of an angular contact ball bearing in O arrangement. The roller bearing 9 has an outer ring 10, to which a mounting flange 11 is formed for a brake disc, and a two-part inner ring 12. Between the outer ring 10 and the inner ring 12 serving as rolling elements bearing balls 13 are arranged.

The inner ring 12 consists of two bearing inner rings 14 and 15, wherein an axially inner bearing inner ring 14 is integrally formed on the wheel hub 2, while an axially outer bearing inner ring 15 is a separate component which is pushed onto a stub axle 16 of the wheel hub 2. After pushing the bearing inner ring 15 on the stub axle 16, an axial end face of the stub axle 16 has been converted in a conventional manner to a radially outwardly widening board 17. The board 17 secures the bearing inner ring 15 in its position and biases the rolling bearing 9 with a predetermined force. In an axial end face of the rim 17, the spur toothing 3 is formed, which corresponds to the spur toothing 4 of the outer joint body 7 of the joint 5.

The axle journal 16 has an inner circumferential surface 18 which delimits a bell-shaped opening 19 widening to the hinge 5. In these

Opening 19, the outer joint body 7 of the joint 5 is inserted, in such a way that almost the entire joint body 7 axially inside and radially is arranged below the axle journal 16 or radially below the rolling bearing 9. For this purpose, an outer lateral surface 20 of the outer joint body 7 is adapted to the contour of the lateral surface 18 or the opening 19.

The visible in Fig. 1 space in the opening 19 can be filled or filled with a sealant or an easy-to-dissolve adhesive.

For the rotationally fixed connection of the joint 5 with the wheel hub 2, the outer joint body 7 is inserted axially into the opening 19 until the spur gears 3, 4 engage from the wheel hub 2 and the joint body 7. Subsequently, a screw bolt 21 is screwed into a central threaded bore 22 of the outer joint body 7. Here, a coaxially mounted on the bolt 21 clamping plate 23 is supported with its axially and radially outer edge against a radially inwardly cantilevered rim 24 of the wheel flange 2 from. When tightening the bolt 21, the existing sheet metal clamping plate 23 presses against the board 24, whereby the outer joint body 7 is axially retracted into the wheel flange 2, namely until the spur gears 3, 4 engage under bias in one another. At the same time gives the relatively flexible clamping plate 23 of the connection of the wheel flange 2 with the joint 5 a degree of flexibility and serves for Vorspannreserve the screw.

The particular advantage of such an embodiment of the compound of wheel bearing 2 with joint 5 can be seen in that the axial length of the bearing assembly 1 compared to conventional solutions is significantly shortened by the at least partially insertion of the joint 5 in the wheel bearing 2, the simple and fast Removability is maintained. The spur gearing 3, 4 ensures a secure and precise rotationally fixed connection of the joint 5 with the wheel hub 2. 2, a second embodiment of the bearing assembly 1 according to the invention is shown, which largely corresponds to the bearing assembly shown in Fig. 1. Of the embodiment of FIG. 1, the embodiment of FIG. 2 differs in addition to a slightly different shape of the opening 19, especially by a different way of fixing the joint 5 to the hub 2.

For this purpose, a hollow screw 25 is screwed into an internally threaded central opening 26 of the outer joint body 7. The hollow screw 25 rests with an axially outer edge 27 on a radially inwardly cantilevered rim 28 of the wheel hub 2. When tightening the hollow screw 25, which is made of sheet metal, the outer joint body 7 is pulled axially inwards into the opening 19 of the wheel hub 2 or the axle journal 16 and braced against the wheel hub 2. In this case, the spur gears 3, 4 engage each other and provide a rotationally fixed connection of the joint 5 with the wheel hub 2 ago.

The advantage of this variant is the fact that a more direct application of force from the hollow screw 25 to the spur gear teeth 3, 4 is made possible. Furthermore, weight savings can be made possible by the configuration of the hollow screw 25 as a sheet-metal forming part.

FIG. 3 shows a third exemplary embodiment of the bearing arrangement 1 according to the invention, which largely corresponds to the variant illustrated in FIG. 2. Also in this embodiment, a hollow screw 25 is provided for connecting joint 5 with the wheel hub 2, which is supported here with its radially outer edge 27 on a shoulder 29 in the wheel hub 2. In contrast to the embodiments shown in Figures 1 and 2, the spur gear teeth 3 ', 4' is not formed in the joint-side board 17 of the hub 2 and in the corresponding region of the outer joint body 7, but at the wheel-side axial end portion of the outer joint body 7 and a radially inner collar 30 of the hub 2 formed. The gear or joint-side end of the outer joint body 7 is free, that is not connected to the wheel hub 2 or the collar 17 of the wheel hub 2. In this area, the outer joint body 7 is connected to a bellows 31 which, inter alia, ensures a seal between the joint 5 and the hub 2. The bellows 31 is to the front of the collar 17 of the hub 2.

In deviation from the illustrated embodiments, it is also possible to combine the spur gear teeth 3, 4 according to the embodiments shown in FIGS. 1 and 2 with the spur gear teeth 3 ', 4' shown in FIG. 3, that is to say both types of spur gear teeth to provide axially outside and axially inside.

In FIGS. 4 and 5, the wheel hub 2 from FIG. 3 is shown in two different production stages. 4, the roller bearing 9 is already fully assembled, the separate bearing inner ring 15 has been pushed and the collar 17 has been formed for the preload of the rolling bearing 9 by Wälznieten. A joint inner side radially in the hub 2, radially inner relief groove 32 is designed so that a narrow ring 33 remains. It is also possible to form the ring 33 during drop forging of the main body of the wheel hub 2 of these and optionally nachzuspanen.

In Fig. 5, the next manufacturing step is shown, in which the ring 33 folded by rolling rivets, that is bent radially outward. This results in the collar 30, in which the end toothing 3 'is formed integrally or simultaneously with the bending.

In FIGS. 6 and 7, the wheel hub 2 from FIG. 3 is shown in two production stages of an alternative manufacturing method. In the

Wheel hub 2 according to FIG. 6, the roller bearing 9 is also already assembled, the separate bearing inner ring 15 is pushed on and the collar 17 is rotated by rolling bearings. rivets have been formed. On the hinge side, a spherical, annular bead 34 has been integrally formed axially in the wheel hub 2, either during drop forging of the main body of the wheel hub 2 or through a subsequent deformation process.

In Fig. 7, the next manufacturing step is shown, in which in the bead 34 by means of a striker, not shown, the spur gearing 3 'has been introduced. Now, the wheel hub 2 is completed and can be connected to the outer joint body 7 in the manner described.

The bearing arrangements 1 according to the invention shown in FIGS. 8 and 9 differ in each case from the above-described embodiments in that the separate bearing inner ring 15 is prestressed by a radial shaping 35 of the outer joint body 7 instead of by a rolling rivet collar or rim 17. The embodiments according to FIGS. 8 and 9 differ only in the design of the radial shaping 35 of the outer joint body 7 used for the pretensioning.

In all embodiments, the spur gear teeth 3, 3 ', 4, 4' of the wheel hub 2 and rotary joint 5 may each be designed as a Hirth toothing. The outer joint body 7 may consist of a solid material or be formed as a sheet metal forming part.

LIST OF REFERENCE NUMBERS

1 bearing arrangement

2 wheel hub

3 teeth (3 ^X )

4 spur toothing (4 ^X )

5 swivel

6 wheel flange

7 Outer joint body

8 career of the outer joint body

9 rolling bearings

10 outer ring

11 mounting flange

12 inner ring

13 bearing ball

14 bearing inner ring

15 bearing inner ring

16 stub axle, stump

17 board

18 Inner lateral surface of the axle journal 16

19 opening

20 Outer lateral surface of the outer joint body 7

21 bolts

22 threaded hole

23 clamping plates

24 board

25 hollow screw

26 Central opening of the outer joint body 7

27 edge

28 board

29 shoulder

30 fret bellow

Freeway

ring

bead

X

Claims

claims

1. Bearing arrangement (1) of a via a rotary joint (5) driven wheel hub (2) of a motor vehicle, in which the wheel hub (6) connected to the wheel hub (2) and an outer joint body (7) of the drive shaft connected to a rotary joint (5 ) are rotatably connected to each other, and with a on the wheel hub (2) mounted double-row roller bearing (9), wherein the wheel hub (2) has a radially inner circumferential surface (18), which extends to the hinge (5), bell-shaped opening (19) into which the outer joint body (7) of the joint (5) is inserted at least over part of its axial length, wherein the outer contour of the outer joint body (7) substantially the inner contour of the inner circumferential surface (18) Wheel hub (2) corresponds, and wherein the outer joint body (7) at least partially radially below the rolling bearing (9) is arranged, characterized in that at least one end face of the wheel hub (2) has a Stirnverzah has (3, 3 '), which with a corresponding spur toothing (4, 4') of the outer joint body (7) of the rotary joint (5) is rotatably connected.

2. Bearing arrangement according to claim 1, characterized in that the wheel hub (2) has a pin (16) which has the radially inner circumferential surface.

3. Bearing arrangement according to at least one of the preceding claims, characterized in that the rolling bearing (9) or components of the rolling bearing (9), in particular an inner ring (14) or an inner race, formed integrally with the wheel hub (2) or as a separate part or separate parts (15) with the wheel hub (2) is connected or are.

4. Bearing arrangement according to at least one of the preceding claims, characterized in that the spur toothing (3) of the wheel hub (2) in an axially outer and radially outwardly directed board (17) is introduced.

5. Bearing arrangement according to at least one of the preceding claims, characterized in that a separate Lagerinnen- ring (15) is secured and biased by the board (17) in its position or that the separate inner ring (15) secured by the joint body in its position and is biased.

6. Bearing arrangement according to at least one of the preceding claims, characterized in that a non-separate inner ring (12) of the rolling bearing (9) is an integral part of the wheel hub (2).

7. Bearing arrangement according to at least one of the preceding claims, characterized in that against the wheel hub (2) abstützender threaded bolt (21; 25) in a central threaded bore (22; 26) of the outer joint body (7) is screwed and the outer joint body (7) axially fixed to the wheel hub (2).

8. Bearing arrangement according to at least one of the preceding claims, characterized in that a coaxially mounted on the screw bolt (21) clamping plate (23) with its radially outer edge against a radially inwardly cantilevered board (24) of the wheel flange (2) is supported.

9. Bearing arrangement according to at least one of the preceding claims, characterized in that the screw bolt (25) is a hollow screw (25) which is screwed into a provided with an internal thread provided central opening (26) of the outer joint body (7).

10. Bearing arrangement according to at least one of the preceding claims, characterized in that the hollow screw (25) with an axially outer edge (27) on a radially inwardly cantilevered

Board (28) or on a shoulder (29) of the wheel hub (2) is applied.

11. Bearing arrangement according to at least one of the preceding claims, characterized in that the spur toothing (3 ', 4') in a wheel-side end portion of the outer joint body (7) and in a radially inner collar (30) of the wheel hub (2) is formed.

12. Bearing arrangement according to at least one of the preceding claims, characterized in that the outer joint body (7) with a bellows (31) is connected, which at least on

Collar (17) rests axially.

13. Bearing arrangement according to at least one of the preceding claims, characterized in that the spur toothing (3, 4) a Hirth toothing, in particular with radially extending teeth with a number of 20 to 100, in particular between 40 and 60, or that the spur toothing (3, 4) is only partially formed or that the teeth of the spur gear teeth (3, 4) are inclined against a plane perpendicular to the bearing axis.

14. Bearing arrangement according to at least one of the preceding claims, characterized in that a joint side axially into the

Wheel hub (2) formed narrow ring is present for training or for receiving the spur gear teeth in this.

15. Bearing arrangement according to at least one of the preceding claims, characterized in that a joint side axially into the

Wheel hub (2) formed collar is present, which in particular by folding a joint side axially into the hub (2) formed narrow ring is malleable, in which collar the spur toothing is formed.

16. Bearing arrangement according to at least one of the preceding claims, characterized in that a hinge side axially into the wheel hub (2) formed circumferential bead is formed, in which the spur toothing is formed or formed.

17. Bearing arrangement according to at least one of the preceding claims, characterized in that serrations (3, 3 ^' , 4, 4 ^' ) are arranged at two axially and radially spaced-apart regions of the bearing assembly.

18. A method for producing a bearing assembly according to at least one of the preceding claims 1 to 17, characterized in that the joint side axially into the wheel hub (2) a narrow ring (33) is formed, which then by rolling rivets radially outward to form a federation ( 30) is bent, in which finally the spur toothing (3 ') is formed.

19. A method for producing a bearing assembly according to at least one of the preceding claims 1 to 17, characterized in that in a joint side axially in the wheel hub (2) formed circumferential bead, the spur toothing (3 ') is formed.

20. A method for producing a bearing assembly according to at least one of the preceding claims 18 or 19, characterized in that the rolling bearing (9) is mounted on the wheel hub (2), wherein the separate bearing inner ring (15) on the wheel hub (2). pushed and a collar (17) for axial securing and bias of the separate inner bearing ring (15) is formed by Wälznieten.

21. A method for producing a bearing assembly according to at least one of the preceding claims 1 to 17, characterized in that the rolling bearing (9) on the wheel hub (2) is mounted, wherein the separate bearing inner ring (15) pushed onto the wheel hub (2) and a collar (17) for axial securing and prestressing of the separate bearing inner ring (15) is formed by rolling rivets, and then in the collar, the spur toothing (3, 4) is formed.

22. A method for producing a bearing assembly according to claim 18, characterized in that the rolling bearing (9) on the wheel hub (2) is mounted, that then the separate bearing inner ring (15) pushed onto the wheel hub (2) and the collar (17) for axial securing and prestressing of the separate bearing inner ring (15) is formed by Wälznieten, and that then joint side axially from the hub (2) an undercut (32) is worked out leaving a narrow ring (33), which then by Wälznieten radially is bent outside to form a collar (30), in which finally the spur toothing (3 ') is formed.

23. A method for producing a bearing assembly according to claim 19, characterized in that the rolling bearing (9) on the wheel hub (2) is mounted, that then the separate bearing inner ring (15) pushed onto the wheel hub (2) and the collar (17) for axial securing and

Preload of the separate bearing inner ring (15) is formed by Wälznieten, and that the joint side axially on the wheel hub (2) a spherical bead (34) is formed, in which finally the spur toothing (3 ¹ ) is formed.

24. A method for producing a bearing assembly according to at least one of the preceding claims, characterized in that the spur toothing (3 ') by means of a striker in the collar, the board or the bead (34) is formed.

25. A method for producing a bearing assembly according to at least one of the preceding claims 1 to 24, characterized in that for rotationally fixed connection of the rotary joint with the wheel hub, the outer joint body is axially inserted into the opening until the spur gears of the wheel hub and the joint body interlock.

26. A method for producing a bearing assembly according to at least one of the preceding claims 1 to 25, characterized in that for fixing the wheel hub and the joint body, a screw bolt is screwed into a central threaded bore of the outer joint body or a hollow screw in a provided with an internal thread central opening of the outer joint body is screwed.

27. A method for producing a bearing assembly according to at least one of the preceding claims 1 to 26, characterized in that a coaxially mounted on the screw clamping plate is supported with its axially and radially outer edge against a radially inwardly cantilevered rim of the wheel flange.