DE102008049856A1 - Arrangement for use in motor vehicle, comprises shaft and sleeve part for partially surrounding shaft, where roller bearing is provided for supporting shaft opposite to sleeve part in rotating manner, and sleeve part comprises inner ring - Google Patents

Abstract

The arrangement comprises a shaft (13) and a sleeve part (15) for partially surrounding the shaft. A roller bearing (16) is provided for supporting the shaft opposite to the sleeve part in a rotating manner. The sleeve part comprises an inner ring (18) which is held on the shaft by a press fit, where an external ring (19) is held by the sleeve part. A rolling body (20) runs between the inner ring and the external ring, where the shaft has material bumps (24) for holding the inner ring which is partially suspended on the material bumps forming a press fit. Independent claims are included for the following: (1) a steering column for a motor vehicle with an arrangement; and (2) a method for forming an arrangement.

Description

The The invention relates to an arrangement comprising a shaft, an at least partially surrounding enveloping part and at least a rolling bearing rotatably supporting the shaft opposite to the enveloping part, which is an on the shaft held by an interference fit inner ring and an outer ring held by the Hüllteil and between the inner ring and the outer ring running rolling elements includes. Furthermore, the invention relates to a method for Training such an arrangement.

Such an arrangement can be used for example for steering columns for motor vehicles for rotatable mounting of the steering spindle. Steering columns for motor vehicles are known in different embodiments. Such steering columns can be designed to be adjustable or adjustable in their length and / or height or inclination. An adjustable steering column for a motor vehicle, for example, goes from the DE 10 2005 034 952 B3 out. In the closed state of a clamping mechanism, a jacket unit, which rotatably supports a portion of the steering spindle adjoining the steering wheel end, is held immovable relative to a support unit fixed to the chassis. The holder is made by friction. To increase the number of friction surfaces and adjustable steering columns with cooperating according to the type of multi-disc clutch fins have become known. In other embodiments of steering columns, the holder takes place against an adjustment form-fitting manner.

From the US 6,513,984 B1 is the storage of a shaft protruding, which is formed by the steering shaft of a motor vehicle, wherein the axial positioning of the bearing is ensured by retaining rings which are arranged on both sides and inserted into grooves of the shaft. The disadvantage is that corresponding grooves must be provided for the retaining rings. These grooves require a wall thickness increase of the shaft, so that the necessary torque can be transmitted. Furthermore, this arrangement has the disadvantage that the storage can not be biased axially.

The EP 1 408 247 B1 discloses a bearing of a shaft, in particular a steering spindle for a motor vehicle, in which the races of the formed in the form of an angular contact ball bearing roller bearings are formed by sheet metal shells. In order to achieve a backlash of storage first and second axially spaced angular contact ball bearings are present, the races are clamped by a spring in the axial direction of the shaft against each other. For axial retention of the inner rings relative to the shaft retaining rings are provided. The inner rings are fastened to the shaft by means of tolerance rings. By using tolerance rings, the required reworking on the shaft can be reduced. This arrangement is complex and consists of many items.

From the DE 103 37 021 A1 is a device of the type mentioned. The bearing for a steering shaft of a motor vehicle rolling bearing has an inner ring which is formed as a solid ring and is provided in its receiving bore with an internal toothing. With its internal teeth of the inner ring is pressed onto the steering shaft. This inner ring also takes over the previous function of the tolerance ring, so also compensates for manufacturing inaccuracies between the inner ring and the shaft. So that the inner ring can be pushed to the intended position, it will be necessary to form the shaft in this area with a projection (= a section of a larger diameter). Otherwise, there would be a deformation of the shavings on the shaft over the entire axial travel of the slide. The formation of such an approach requires an additional manufacturing effort for the shaft. The formation of a bearing inner ring with an internal toothing requires an increased production cost. Also, the bearing inner ring must be specially manufactured and for this arrangement, no standard warehouse can be used. Since a bearing inner ring is usually hardened, the teeth of the toothing substantially dig into the material of the steering shaft without being deformed itself, which involves disadvantages.

A further storage of a steering shaft, as known through prior use is described in detail at the beginning of the description of the figures.

task The invention is in an arrangement of the aforementioned To simplify the mounting of the rolling bearing on the shaft. According to the invention, this is achieved by an arrangement with the features of claim 1 and by a method with the Features of claim 13. Describe the dependent claims advantageous developments of the invention.

In an arrangement according to the invention, the shaft for holding the inner ring is at least over part of its circumference provided with material elevations, wherein the inner ring is pushed to form a press fit at least partially on the material elevations and / or the inner ring for axial support against the shaft with an angle to Longitudinal axis of the shaft surface at least rests on one of the material elevations. The material surveys are advantageously designed such that they hinaustre on the original, present before introduction of the material collection, the outer circumference of the shaft Accordingly, the diameter of the shaft is increased in this way at the appropriate location.

The Training material surveys on the shaft can be very easy by reshaping the shaft, reducing the diameter the wave is increased in the area of material elevations, for example, by rolling, knurling or another mechanical forming operation.

In In a first variant of the invention, the inner ring is at least to a portion of the material elevations (i.e., to at least portions at least some of the material elevations) pressed axially. It will formed by a press fit through which the inner ring for the loads occurring against a rotation and against a axial displacement is secured against the shaft.

In A second variant of the invention is the inner ring on the shaft in an area without such formed by forming material surveys, which widen the diameter of the shaft, held by a press fit. In an advantageous embodiment, the holding force of this interference fit held low, just so large that the inner ring of the Warehouse during the intended use of the arrangement not twisted against the shaft. The material surveys close axially at an angle to the longitudinal axis the shaft standing surface of the inner ring, wherein the Inner ring with this surface on at least one of these material surveys so that he is against a shift from the Shaft in this axial direction through the at least one adjacent Material survey is held.

A third variant of the invention consists in a combination of the above first and second variants. In this third variant of the invention is the inner ring on at least at least some sections the material elevations pressed axially, whereby he against a Twist is secured against the shaft, as well it is located at an angle to the longitudinal axis of the shaft Surface on at least one of the material surveys, which he - in addition to the holding force, by the pressing is applied to the material elevations in the axial direction - against an axial displacement relative to the shaft held in this direction is. The at least one axial support by plant on the surface of the inner ring causing material collection is here at least in an area undeformed, the axial the location of the support in the direction away from the inner ring Direction connects. Here, the inner ring partially on the at least one material survey be pressed on the plane perpendicular to the longitudinal axis of the shaft is applied. The plant can be made by the fact that the outer diameter of the Wave in the area of undeformed material surveys larger is the inner diameter of the inner ring. Instead, you can for abutment at the angle to the longitudinal axis of the shaft Surface of the inner ring and separate material surveys provided its height - by a greater expansion the wave when forming - is greater as the height measured before pushing on the inner ring the material elevations on which the inner ring is pushed.

In the said first and third variants of the invention is the Outer diameter of the shaft in the area of the material elevations, on which the inner ring is pushed, before pushing the inner ring larger than the inner diameter of the inner ring. This required for the interference fit oversize is preferably with a size in the range from 0.02 mm to 0.25 mm. The height of this Material surveys is preferably in the range of 0.03 mm to 0.4 mm. The diameter of the shaft before the material elevations are introduced, this is smaller than the inner diameter of the inner ring.

Preferably the inner ring is in the aforementioned first and third variant of the invention to at least five, more preferably on at least ten, material surveys at least partially pressed.

The at least one in said second and third variant of Invention at the angle to the longitudinal axis of the shaft Surface adjacent material survey preferably has a height in the range of 0.1 mm to 0.5 mm.

In the said second and third variant of the invention is the Area at which the at least one material survey to axial support of the inner ring relative to the Shaft rests, as further explained, at an angle to the longitudinal axis the wave, d. H. the surface is not parallel to the longitudinal axis the wave or its surface normal closes one Angle not equal to 90 ° with the longitudinal axis of the shaft one. Preferably, the surface normal closes with the longitudinal axis of the shaft an angle smaller than 45 °, more preferably, the surface is perpendicular to Longitudinal axis of the shaft. It can affect this area around an end face of the inner ring at an axial end of the inner ring or to act a gradation of the inner ring.

The invention enables a simple design of the rotatable mounting of the shaft relative to the enveloping part. Conveniently, a shaft can be used, which in the section in which the inner ring is held and in axially adjoining sections prior to formation of the Material surveys has a constant diameter. The material elevations can be formed in a simple manner by forming the shaft, wherein the shaft is widened by this deformation, ie the diameter in the region of a material elevation is greater than the diameter before the material elevation has been introduced. The material surveys can thus be formed by material displacement.

By the training of the invention can the requirement of machining the inner lateral surface the inner ring of the bearing can be avoided. It can also standard rolling bearings are used. It can be a wide range of types of bearings with the invention Solution be positioned.

Preferably the shaft is in a predefined axial area for mounting the inner ring substantially over its entire circumference provided with material surveys. This is at least along one there is no area around the circumference, whose Length greater than one-fifth, more preferably greater than one tenth of entire circumference and in which there is no material collection. The material surveys may take the form of a plurality, preferably at least five, more preferably at least ten, of adjacent and / or intersecting webs, beads or teeth are formed.

In a possible embodiment of the invention extend the material surveys in the circumferential direction of the shaft, wherein a plurality of spaced apart in the axial direction of the shaft material surveys is available. Preferably, each collection of material surrounds the shaft Completely. The material surveys can be in Form formed by webs, beads or teeth be. Such material surveys are also called rolling or ring-shaped Nutenrändel referred.

In another possible embodiment the material elevations in the axial direction of the shaft, wherein a Plurality of circumferentially spaced material elevations present is. The distance between the middle or crest lines of the material elevations is preferably less than one fifth, more preferably less than one tenth of the circumferential extent the wave. The material surveys can take the form of webs, Be formed beads or teeth. Such Training is also called knurling or axial grooving designated.

Also Combinations of circumferentially and in the axial direction of the Wave extending material surveys and / or other gradients of material elevations, so obliquely to the circumferential direction and obliquely to the axial direction of the shaft are conceivable and possible, for example diamond knurls.

Especially advantageous is the use of the invention Arrangement for mounting a steering spindle of a steering column for a motor vehicle. Especially in this application are high demands on the rigidity of the bearing of the rotatably mounted Steering spindle provided. At the same time should be simple inexpensive Solutions are realized where the rolling resistance low and the required manufacturing accuracy as possible are formed low.

Further Advantages and details of the invention are described below explained in the accompanying drawings. In this show:

1 a formed by a steering shaft shaft which is rotatably supported in a conventional manner in a Hüllteil, in oblique view;

2 an exploded view of the arrangement of 1 ;

3 a longitudinal center section of the arrangement of 1 ;

4 and 5 Details A and B of 3 ;

6 an exploded view of an arrangement according to a first embodiment of the invention;

7 a longitudinal center section through the arrangement of 6 ;

8th and 9 Details C and D of 7 ;

10 an oblique view of the bearing of the arrangement of 6 , across from 6 enlarged and from a different angle;

11 a longitudinal center section through the bearing;

12 a representation accordingly 8th a second embodiment of the invention;

13 a representation accordingly 8th a third embodiment of the invention;

14 a representation accordingly 8th a fourth embodiment of the invention;

15 an exploded view of an arrangement according to a fifth embodiment of the invention;

16 a part of a longitudinal middle section the arrangement of 15 in the area of the rolling bearing (in a representation analog 8th );

17 a representation analog 16 a sixth embodiment of the invention;

18 a representation analog 16 a seventh embodiment of the invention;

19 an oblique view of a possible embodiment of a steering column with a steering spindle mounted in the manner according to the invention;

20 the steering column of 19 in an exploded view of parts of the steering column.

The Figures have different scales and are partially schematized. In particular, the material surveys greatly exaggerated.

The following is first based on the 1 to 5 a conventional storage of a shaft shown in a Hüllteil, as used for steering columns of motor vehicles. The wave 1 is formed by a subsequent to the steering wheel end of the steering shaft portion of the steering shaft. The wrapper part 2 is formed by a tubular shell unit (= jacket tube). For storage of the shaft 1 opposite the Hüllteil serve a rolling bearing 3 and an additional rolling bearing 4 which is located farther from the steering wheel end of the steering shaft than the rolling bearing 3 , The rolling bearing 3 and additional rolling bearings 4 are designed in the form of angular contact ball bearings. For axial mounting of the rolling bearing 3 serves one by pressing on the shaft 1 on this held retaining ring 5 to which a spring washer 6 Connects with a plastic ring 7 cooperates on which the inner ring 8th of the rolling bearing 3 is arranged and the tolerance compensation between the shaft 1 and the inner ring 8th serves. The outer ring 9 is at the envelope part 2 held.

The inner ring 10 the additional rolling bearing 4 is also on a plastic ring 11 arranged, the tolerance compensation between the shaft 1 and the inner ring 10 causes. This plastic ring 11 and thereby the additional rolling bearing 4 is axially by means of one on the shaft 1 Pressed retaining ring 12 positioned. The spring ring 6 causes an axial preload of the rolling bearing to avoid play 3 and additional rolling bearing 4 ,

A first embodiment of the invention will be described below with reference to FIG 6 to 11 explained. The wave 13 is from a to a steering wheel end 14 subsequent section of a steering shaft (= steering shaft) of a steering column formed for a motor vehicle. The wrapper part 15 becomes one of the wave 13 at least partially receiving tubular shell unit (= jacket tube) of the steering column formed. For rotatable mounting of the shaft 13 opposite the Hüllteil 15 serve a rolling bearing 16 and an additional rolling bearing 17 , which from the steering wheel end 14 further away than the rolling bearing 16 , With preference are the two rolling bearings 16 . 17 at the two end portions of the Hüllteils 15 arranged.

The rolling bearing 16 includes an inner ring 18 , which is designed here as a solid steel part. A design in the form of a bent sheet metal part is also conceivable and possible and will be described below with reference to another embodiment. Furthermore, the rolling bearing includes 16 an outer ring 19 , that of the envelope part ( 2 ) is held against rotation and positioned axially. The holder of the outer ring 19 at the Hüllteil 2 can be done in a conventional manner, for example by pressing in the front end and a non-crimped end portion of the outer ring 19 , the front side of the Hüllteil 2 is applied.

The inner ring 18 and outer ring 19 form the races of the rolling bearing 16 between which the rolling elements 20 , here balls, unroll.

The rolling elements 20 are in a cage 21 held. hook 22 . 23 (See in particular the 10 and 11 ) hold the inner ring 18 and outer ring 19 in the not yet assembled state of the rolling bearing 16 together. The hooks 22 . 23 can also be omitted. Depending on the design of the rolling bearing 16 can also do the cage 21 omitted.

The rolling bearing 16 is formed in the embodiment in the form of an angular contact ball bearing. The use of other bearings, especially angular contact bearings is conceivable and possible.

For holding the inner ring 18 on the wave 13 this is in the area of the connection with the inner ring 18 with material surveys 24 provided, which are formed here of a roll and thus in the form of circumferential ridges, beads or teeth are formed. Also formed in another form by forming and this case taking place expansion of the shaft material surveys 24 are conceivable and possible, for example in the form of knurling, diamond knurling, etc ..

The outer diameter of the shaft 13 in the area of a respective material survey 24 is before the inner ring is pressed on 18 larger than the inner diameter of the inner ring 18 , In other words, the tips (in the case of teeth) or ridges (in the case of ridges or beads) have the material elevations 24 a distance from the central longitudinal axis of the shaft 13 whose value is greater than the inner radius of the inner ring 18 is, whereby the required for the formation of a press fit oversize is created.

The inner ring 18 is on these material surveys 24 deferred (= axially pressed), ie at least part of the material elevations 24 lies in the assembled state below the inner ring 18 , The below the inner ring 18 lying material elevations are when pressing the inner ring 18 deformed.

The additional rolling bearing 17 includes an inner ring 26 , the opposite of the wave 13 is held non-rotatably and axially positioned, an outer ring 27 , the opposite of the Hüllteil 15 held non-rotatably and axially positioned and between these rolling rolling elements 28 , here balls.

The rolling elements 28 , which may be arranged in a cage, are formed here as balls and the additional rolling bearing is designed in the form of an angular contact ball bearing. It is also conceivable and possible to use rolling bearings of a different shape, in particular angular rolling bearings.

Between the inner ring 26 and the wave 13 is an intermediate ring 29 arranged, which is preferably formed of plastic. About this intermediate ring 29 are also tolerances of the shaft 13 balanced.

For the axial preload of the additional rolling bearing 17 and rolling bearing 16 serves a trained in the form of a spring ring spring element 30 , This engages the intermediate ring 29 at its from the rolling bearing 16 on the opposite end face and on the other hand is supported on a retaining ring 31 from, the axially immovable against the shaft 13 is, is preferably pressed on this.

The spring element 30 clamps the additional rolling bearing 17 axially before and acted upon - via the additional rolling bearing 17 - the envelope part 15 towards the steering wheel end 14 the wave 13 , which also causes the rolling bearing 16 is axially biased.

Conceivable and possible, for example, is a one-piece design of the intermediate ring 29 and inner rings 26 the additional rolling bearing 17 , z. B. in the form of a solid steel part, ie a separate intermediate ring 29 would be omitted. The spring element could in this case directly on the inner ring 26 the additional rolling bearing 17 attack.

The material surveys 24 to which the inner ring 18 pressed on, cause a tolerance compensation, so that an exact machining of the shaft 13 is not required. In particular, waves can be used to form the arrangement according to the invention 13 are used, which are made by hammering.

A further embodiment of the invention will be described below with reference to FIG 12 explained. The only difference from the previously described embodiment is the formation of the material elevations and the holder of the inner ring 18 of the rolling bearing 16 on this. Moreover, the training is the same as previously described and in the 7 to 11 shown.

The wave 13 is here in a first section of its longitudinal extent with material elevations 24 a first height and in an axially subsequent second portion of its longitudinal extent with material elevations 32 provided a second greater height. Through a respective material survey 24 the first height is the outer diameter of the shaft 13 We only greatly expanded than by a respective material survey 32 the larger second height, ie the peaks (in the case of teeth) or ridges (in the case of ridges or beads) of the material elevations 32 have a greater distance from the central longitudinal axis 25 the wave 13 on as the tips (in the case of teeth) or back (in the case of webs or beads) of the material surveys 24 ,

The inner ring 18 is on the material surveys 24 pressed with the lower height, whereby they have been deformed. The inner ring 18 lies here with his to the steering wheel side surface 14 the wave 13 pointing end 33 at the first of the material surveys 32 on the front side.

Due to the low torques that a rolling bearing receives from its outer ring 19 on his inner ring 18 transfers, is sufficient for holding the inner ring 18 against rotation relative to the shaft 13 already a relatively low adhesion, which by the interference fit on the material surveys 24 is achieved with the lower height. Thus, those are on the inner ring 26 low by applying the applied voltages. The risk of deformation of the inner ring 18 by the applied voltage is thereby reduced. The inner ring 18 can thus be relatively thin-walled, for example in the form of a bent sheet metal part.

Through the material surveys 32 with the larger height is further a reliable support of the inner ring 18 against axial displacement toward the steering wheel end 14 the wave 13 reached.

The material surveys 24 and 32 are formed in the embodiment shown in the form of curls. Others by forming trained material surveys, such as knurls or diamond knurls are conceivable and possible, with different shapes for the material surveys 24 and the material surveys 32 are conceivable and possible.

This in 13 illustrated third embodiment differs from that in 12 illustrated embodiment solely in that the first portion of the longitudinal extension of the shaft 13 in which the material surveys 24 are arranged at a lower height, from the second portion of the longitudinal extension of the shaft 13 in which the material surveys 32 are arranged at a greater height, axially spaced. The inner ring 18 is on the material surveys 24 with the lower height under deformation of the same axially pressed and is located with a steering wheel end 14 the wave 13 facing surface 33 at the material elevations 32 with the greater height, in the embodiment shown on the first of these material surveys 32 (if the material surveys 32 For example, in the axial direction of the shaft would extend, so would the inner ring 18 with its area 33 at the ends of all material surveys 32 issue).

This in 14 illustrated fourth embodiment again differs from the embodiments described above, solely by the arrangement of the material surveys 24 and the holder of the inner ring 18 on the wave 1 , In this embodiment, the inner ring 18 on a section of the shaft 1 axially pressed, in which no material elevations are formed. Through this interference fit, the inner ring 18 against rotation relative to the shaft 13 held. This interference fit can thus be relatively weak. For axial retention of the inner ring 18 opposite the wave 13 to a displacement of the inner ring 18 towards the steering wheel end 14 the wave 13 To prevent, serve formed by forming the shaft material surveys 24 where the inner ring 26 with his to the steering wheel end 14 directed surface 33 abuts the front side (in the case of the rolling shown here is the surface 33 of the inner ring 18 at the first of the material surveys 24 at; if the material elevations were formed, for example, in the form of a knurl, the surface would 33 on all material surveys 24 abut end).

A fifth embodiment of the invention is in the 15 and 16 shown. The differences from the fourth embodiment described above are that the inner ring 18 is formed by a bent sheet metal part and that the material elevations 24 are shown in the form of a knurl. The inner ring 18 Here again is a section of the shaft 13 pressed, without material elevations 24 is trained. The steering wheel end 14 directed surface 33 of the on the wave 13 pressed-on portion of the inner ring 18 relies on the material surveys 24 from. Another training of material surveys 24 could in turn be provided, for example in the form of a roll or a diamond trimming.

This in 17 illustrated sixth embodiment is similar to that in 12 illustrated second embodiment. Again, the wave is 13 in a first section of its longitudinal extent with material elevations 24 provided a first height and in an axially subsequent second portion of its longitudinal extension with material elevations 32 provided a larger second height. The differences from the second embodiment are that the inner ring 18 is designed here as a bent sheet metal part and the material surveys 24 . 32 are shown as knurls. A section of the inner ring 18 is on the material surveys 24 pressed axially with the lower height, which have deformed (while further reducing their height). One towards the steering wheel end 14 directed surface 33 of the material surveys 24 pressed-on portion of the inner ring 18 is due to the material surveys 32 with the greater height and is supported on these axially. The area 33 is from a paragraph of the inner ring 18 educated. Also other training of material surveys 24 . 32 than in the form of knurls are conceivable and possible, for example in the form of curls or diamond trimmings.

This in 18 illustrated seventh embodiment differs from that in 17 illustrated sixth embodiment in that the first portion of the longitudinal extension of the shaft 13 in which these with material surveys 24 lesser height is provided, from the second section of its longitudinal extent, in which it with material elevations 32 greater height is axially spaced. A portion of the inner ring formed by a bent sheet metal part 18 is on the material surveys 24 pressed with the lower height. One towards the steering wheel end 14 directed surface 33 of the inner ring 18 is due to the material surveys 32 with the greater height and is supported on these axially. The area 33 is from a paragraph of the inner ring 18 educated.

Even if in the representations according to the 8th to 14 a circumferential curling 24 . 32 with a massively formed inner ring 18 are shown combined and according to the 15 to 18 a longitudinal knurl 24 . 32 combined with an inner ring formed from a sheet metal part 18 are shown, the invention is also on each Any combination of knurling, rolling, training of the inner ring made of sheet metal or directed as a solid part. Also, in the multi-level material surveys 24 . 32 Longitudinal knurling and / or rolling or other types of diametral widening generated by deformation can be used.

An embodiment of a steering column with a bearing assembly according to the invention is in the 19 and 20 shown. The shaft mounted in accordance with the invention 13 puts the to the steering wheel end 14 the steering shaft subsequent section of the steering shaft and the Hüllteil 15 is formed by a jacket spindle rotatably supporting the steering shaft. In the illustrated embodiment, the steering column is adjustable in its length and its height or inclination. This is the Hüllteil 15 in the open state of a clamping mechanism 34 opposite a carrying unit 35 adjustable, which is connectable to the chassis of the motor vehicle. In the closed state of the clamping mechanism 34 the set position is determined.

On both sides of the Hüllteils 15 extend sidewalls 36 . 37 the carrying unit 35 , In the embodiment is further between the support unit 35 and the wrapper part 15 an intermediate unit 38 arranged. In the opened state of the clamping mechanism 34 is the envelope part 15 towards the intermediate unit 38 in the direction of the longitudinal axis 25 the wave 13 adjustable and the intermediate unit 38 is opposite the carrying unit 35 around the axis 39 pivotable.

The tensioning mechanism comprises one transverse to the longitudinal axis 25 the shaft lying and long holes in the side cheeks 36 . 37 as well as openings in the intermediate unit 38 passing through clamping bolt 40 , For opening and closing the clamping mechanism 34 serves an operating lever 41 , which is about the axis of the clamping bolt 40 is pivoted. This act on the tension of the operating lever 41 operated cams 42 with inclined surfaces together.

A such steering column, apart from the use of the invention Arrangement is known, for example from that in the introduction to the description mentioned prior art.

In contrast to the prior art is through the use of the inventive arrangement of the shaft 13 that in the wrapper part 15 rotatably mounted, increased rigidity of the steering column, compared to steering columns, as they are known in the art reached. According to the prior art, as in the 1 to 6 is shown, is at the steering wheel end of the arrangement of the spring ring 6 arranged. Accordingly, the movable member is close to the steering wheel (= in the vicinity of the steering wheel side end 14 ) and correspondingly removed from the other end of the steering shaft, in which in height-adjustable steering columns, the pivot axis 39 the steering column is located. This has the consequence that the lever arm for attacking forces, as inevitably introduced by the driver in the operation of the steering wheel in the arrangement, compared to the inventive arrangement is relatively large. As a result, the subjective feeling in the operation of the steering by the driver is significantly improved, although minor rolling friction in the bearings can be realized by lower axial biasing forces.

steering columns, in which an inventive bearing of the steering shaft can be used in different ways be formed another way. Here they can in the Length and / or height or inclination be adjustable. Likewise, the invention with adjustable steering columns can be used.

1

wave

2

enveloping

3

rolling elements

4

additional bearings

5

retaining ring

6

spring washer

7

Plastic ring

8th

inner ring

9

outer ring

10

inner ring

11

Plastic ring

12

bracket

13

wave

14

steering wheel-sided The End

15

enveloping

16

roller bearing

17

additional bearings

18

inner ring

19

outer ring

20

rolling elements

21

Cage

22

hook

23

hook

24

material elevation

25

longitudinal axis

26

inner ring

27

outer ring

28

rolling elements

29

intermediate ring

30

spring element

31

retaining ring

32

material elevation

33

area

34

tensioning mechanism

35

support unit

36

side cheek

37

side cheek

38

intermediate unit

39

axis

40

clamping bolt

41

actuating lever

42

cam

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 102005034952 B3 [0002]
• - US 6513984 B1 [0003]
• - EP 1408247 B1 [0004]
• - DE 10337021 A1 [0005]

Claims (14)

Arrangement comprising a shaft ( 13 ), an at least partially surrounding envelope part ( 15 ) and at least one the wave ( 13 ) opposite the enveloping part ( 15 ) rotatably supporting rolling bearing ( 16 ), which one on the shaft ( 13 ) held by an interference fit inner ring ( 18 ) and one of the Hüllteil ( 15 ) held outer ring ( 19 ) and between the inner ring ( 18 ) and the outer ring ( 19 ) running rolling elements ( 20 ), characterized in that the shaft ( 13 ) for holding the inner ring ( 18 ) at least over part of its circumference with material elevations ( 24 . 32 ), wherein the inner ring ( 18 ) under formation of a press fit at least partially on the material elevations ( 24 ) is pushed and / or the inner ring ( 18 ) for axial support against the shaft ( 13 ) at an angle to the longitudinal axis ( 25 ) the wave ( 13 ) standing surface ( 33 ) at least at one of the material surveys ( 32 ) is present. Arrangement according to claim 1, characterized in that the material surveys ( 24 . 32 ) by forming the shaft ( 13 ) widening the diameter of the shaft ( 13 ) are formed. Arrangement according to claim 1 or 2, characterized in that the material surveys ( 24 . 32 ) in the circumferential direction of the shaft ( 13 ). Arrangement according to claim 1 or 2, characterized in that the material surveys ( 24 . 32 ) in the axial direction of the shaft ( 13 ). Arrangement according to one of claims 1 to 4, characterized in that the shaft ( 13 ) next to the section where they are collected by means of material surveys ( 24 . 32 ) is widened in its diameter, at least in the region of the connection with the inner ring ( 18 ) and in axially adjoining areas has a constant diameter. Arrangement according to one of claims 1 to 5, characterized in that the shaft ( 13 ) rotatably supporting Hüllteil ( 15 ) is tubular. Arrangement according to one of claims 1 to 6, characterized in that the rolling bearing ( 16 ) is an angular contact bearing, preferably an angular contact ball bearing. Arrangement according to one of claims 1 to 7, characterized in that for the rotatable mounting of the shaft ( 13 ) opposite the enveloping part ( 15 ) further in the axial direction of the shaft ( 13 ) from the rolling bearing ( 16 ) spaced auxiliary rolling bearing ( 17 ) is provided, which surrounds an inner ring ( 26 ), one on Hüllteil ( 15 ) held outer ring ( 27 ) and between the inner ring ( 26 ) and the outer ring ( 27 ) running rolling elements ( 28 ). Arrangement according to claim 8, characterized in that the inner ring ( 26 ) of the additional rolling bearing ( 17 ) opposite the shaft ( 13 ) is displaceable and by means of at least one spring element ( 30 ) towards the outer ring ( 18 ) is acted upon. Arrangement according to one of claims 1 to 9, characterized in that the shaft ( 13 ) a portion of a steering shaft for a steering column for a motor vehicle and the Hüllteil ( 15 ) is a the steering shaft rotatably supporting mantle unit for a steering column for a motor vehicle. Arrangement according to claim 10, characterized in that the additional rolling bearing ( 17 ) further than the rolling bearing ( 16 ) from the steering wheel end ( 14 ) of the steering shaft is removed. Steering column for a motor vehicle with an arrangement according to claim 10 or 11. Method of forming an assembly comprising a shaft ( 13 ), an at least partially surrounding envelope part ( 15 ) and at least one the wave ( 13 ) opposite the enveloping part ( 15 ) rotatably supporting rolling bearing ( 16 ), which one on the shaft ( 13 ) held by an interference fit inner ring ( 18 ) and one of the Hüllteil ( 15 ) held outer ring ( 19 ) and between the inner ring ( 18 ) and the outer ring ( 19 ) running rolling elements ( 20 ), characterized in that the shaft ( 13 ) for holding the inner ring ( 18 ) is formed such that at least over part of its circumference material surveys ( 24 . 32 ) are formed, which increase its diameter, and further the inner ring ( 18 ) while forming a press fit on the shaft ( 13 ) is pressed axially, wherein it under formation of a press fit at least on a part of the material surveys ( 24 . 32 ) is pressed and / or for axial support against the shaft ( 13 ) at an angle to the longitudinal axis ( 25 ) the wave ( 13 ) standing surface ( 33 ) to at least one of the material surveys ( 32 ) is created. Method according to claim 13, characterized in that the shaft ( 13 ) for holding the inner ring ( 18 ) in a first section of its longitudinal extension with formed by forming material surveys ( 24 ) is provided at a first height and in an axially subsequent or spaced second portion formed by forming material surveys ( 32 ) is provided a larger second height and that the inner ring ( 18 ) for preventing rotation relative to the shaft ( 13 ) on the material surveys ( 24 ) is pressed with the lower height, wherein it is at an angle to the longitudinal axis ( 25 ) the wave ( 13 ) Area ( 33 ) for the axial retention of the inner ring ( 18 ) opposite the shaft ( 13 ) to at least one of the higher height material surveys ( 32 ) is created.