DE102016218975A1 - Hub assembly for a shaft-hub connection - Google Patents

Abstract

The invention relates to a hub assembly for a shaft-hub connection with a coaxially mountable shaft, with a. a hub part, which has a first tooth having an axial portion for forming a spline with an external toothing of a shaft, and in the region of a first end face, arranged in a radial direction outside the first toothing connection surface for the arrangement of a sleeve; b. a sleeve disposed on the connecting surface of the hub member and having at least one flange member facing inward in a radial direction and forming a seat for an elastomeric body, such that the elastomeric body is disposed in an axial direction between the flange member and the first end face of the elastomeric body Hub is arranged; c. an annular elastomeric body disposed in the receptacle of the sleeve and forming with the sleeve in a circumferential direction a positive first connection; wherein the elastomeric body is designed and arranged such that, when a shaft is arranged in the hub assembly, it is pressed radially inwards at least in a first angular range, so that a positive connection is formed between the elastomer body and the external toothing.

Description

The present invention relates to a hub assembly for a shaft-hub connection with a coaxially mountable shaft, in particular for torque transmission in a drive train of a motor vehicle, wherein shaft and hub assembly in particular have a common axis of rotation. The hub assembly includes a hub portion having a first toothed axial portion for forming a spline having external teeth of a shaft.

From the DE 10 2010 054 283 A1 is a shaft-hub connection for transmitting torque in a drive train of a motor vehicle is known in which a shaft is connected to a hub via a spline. The hub has two discs arranged coaxially with one another, which in the inserted state of the shaft in the hub are braced circumferentially relative to one another in the circumferential direction by means of metallic coil springs arranged radially outside the shaft so that the toothing of the shaft on both tooth flanks of the toothing pointing in the circumferential direction the discs of the hub is applied, whereby a tolerance-related backlash in the circumferential direction can be eliminated.

Proceeding from this, the present invention has the object, at least partially overcome the known from the prior art disadvantages and to show measures that allow a structurally simple and space-saving while quiet shaft-hub connection for a drive train of a motor vehicle. In particular, a, at least in a circumferential direction mutually braced and thus play-free arrangement of the spline forming external teeth of the shaft and the first toothing of the hub part to be made possible.

The object is solved by the features of independent claim 1. Advantageous developments are the subject of the dependent claims. The features listed individually in the claims can be combined in a technologically meaningful manner and can be supplemented by explanatory facts from the description and details of the figures, with further embodiments of the invention are shown.

• a. einem Nabenteil, das einen eine erste Verzahnung aufweisenden axialen Abschnitt zur Bildung einer Steckverzahnung mit einer Außenverzahnung einer Welle, und im Bereich einer ersten Stirnseite eine, in einer radialen Richtung außerhalb der ersten Verzahnung angeordnete Verbindungsfläche für die Anordnung einer Hülse aufweist;
• b. eine Hülse, die auf der Verbindungsfläche des Nabenteils angeordnet ist und zumindest ein, in einer radialen Richtung nach innen weisendes Flanschelement aufweist, und die eine Aufnahme für einen Elastomerkörper bildet, so dass der Elastomerkörper in einer axialen Richtung zwischen dem Flanschelement und der ersten Stirnseite des Nabenteils angeordnet ist;
• c. einen ringförmigen Elastomerkörper, der in der Aufnahme der Hülse angeordnet ist und mit der Hülse in einer Umfangsrichtung eine formschlüssige erste Verbindung bildet;

wobei der Elastomerkörper so ausgeführt und angeordnet ist, dass er bei Anordnung einer Welle in der Nabenbaugruppe zumindest in einem ersten Winkelbereich nach radial innen gedrückt wird, so dass eine formschlüssige Verbindung zwischen Elastomerkörper und Außenverzahnung gebildet ist.The invention relates to a hub assembly for a shaft-hub connection with a coaxially mountable shaft, with

• a. a hub part, which has a first toothed axial portion for forming a spline with an external toothing of a shaft, and in the region of a first end face, arranged in a radial direction outside the first toothing connection surface for the arrangement of a sleeve;
• b. a sleeve disposed on the connecting surface of the hub member and having at least one flange member facing inward in a radial direction, and forming a housing for an elastomeric body, so that the elastomeric body in an axial direction between the flange member and the first end of Hub is arranged;
• c. an annular elastomeric body disposed in the receptacle of the sleeve and forming with the sleeve in a circumferential direction a positive first connection;

wherein the elastomeric body is designed and arranged such that, when a shaft is arranged in the hub assembly, it is pressed radially inwards at least in a first angular range, so that a positive connection is formed between the elastomer body and the external toothing.

In particular, the sleeve is arranged on the connecting surface via a press fit. But it is also an arrangement of the sleeve via a thread possible. Further, the sleeve can also be fastened via connecting elements to the hub part and thus arranged on the connecting surface.

In particular, the elastomeric body arranged in the receptacle has a first inner diameter at least in a second angular range, which is smaller than at least one largest outer diameter of the outer toothing, so that when the shaft is arranged in the hub assembly, the elastomeric body is displaced radially outward at least in the second angular range , This displacement radially outward causes in another angle range, namely z. B. the first angular range, a deformation radially inward, so that the positive connection between the elastomer body and external teeth is formed.

The elastomer body is thus elastically deformed in the hub assembly when the shaft is arranged, so that it is deformed radially inward in at least a first angular range and engages in the external toothing of the shaft. As a result, in particular a positive connection in the circumferential direction between the elastomer body and the external toothing of the shaft is formed. Since there is also a form fit in the circumferential direction between the elastomer body and sleeve and the sleeve is rotatably mounted on the hub part, a tensioned in a circumferential direction and thus play-free arrangement of the spline forming external teeth of the shaft and the first toothing of the hub part is realized.

A tolerance-dependent backlash of the spline in the circumferential direction can be eliminated, so that there may be a substantially backlash-free shaft-hub connection. As a result, in particular rattling noises can be avoided even with load changes. In addition, the elastomer body can act as a damper, with the help of torsional vibrations can be damped.

In particular, the components hub part, elastomer body and sleeve are independent of each other so that a substantially free choice of materials can be made. A connection of the components, eg. B. by vulcanization or the like, is not required here.

At least in the region of the first inner diameter, the elastomeric body preferably has a ramp running radially inward relative to an insertion direction of the shaft. Such a ramp facilitates in particular the insertion of the shaft into the hub assembly, in which case the elastomer body is displaced successively.

In particular, the elastomeric body arranged in the receptacle has at least one sliding element at least in the second angular region, so that when the shaft is arranged in the hub assembly, the shaft contacts the sliding body and the elastomeric body with the sliding body is displaced radially outward. In particular, the sliding body comprises the elastomer body on both, in each axial direction facing sides. Preferably, the sliding body comprises the elastomeric body so far that the ends of the sliding body on the outer peripheral surface of the elastomeric body opposite each other. In particular, the shape of the slider follows the shape of the elastomeric body. In particular, therefore, the sliding body abuts against the elastomer body (over the entire surface, on all surfaces).

In particular, the elastomeric body, at least in a partial region of an inner circumferential surface, has a second toothing for forming a spline toothing with the outer toothing.

Preferably, the second toothing of the elastomer body arranged in the receptacle is designed in alignment with the first toothing.

In particular, the elastomer body is radially outwardly surrounded by a wire ring, wherein at least the wire ring is displaced radially outward by arranging the shaft in the hub assembly at least in a third angular range, so that it is pressed radially inward at least in a first angular range together with the elastomer body ,

In particular, the wire ring forms, at least in the third angular range, a nose which extends radially inward through a recess in the elastomer body, so that the nose contacts the outer toothing when the shaft is arranged in the hub assembly and the wire ring is displaced radially outward.

In particular, the wire ring is made of a metallic wire or sheet. In particular, other materials (including non-metallic) are suitable for the wire ring. However, these materials should in each case allow only a slight elongation in the direction of extent of the wire ring, so that when the wire ring is displaced no (or only a slight, in particular non-plastic, but preferably exclusively elastic) elongation of the wire ring takes place. Thus, it can be ensured that, when the shaft is arranged in the hub assembly, the wire ring displaces radially outwards in a third angular range and, as a result, pushes the elastomer body radially inward in a first angular range (into the external toothing of the shaft).

Further, a shaft-hub connection is proposed, at least comprising a shaft and a hub assembly according to the invention arranged on the shaft, wherein the shaft and hub assembly have a common axis of rotation.

The invention and the technical environment will be explained in more detail with reference to FIGS. The figures show particularly preferred embodiments, to which the invention is not limited. In particular, it should be noted that the figures and in particular the illustrated proportions are only schematic. Like reference numerals designate like objects. Show it:

1 a first variant of a hub assembly in perspective view;

2 : the hub assembly off 1 in a plan view;

3 : the hub assembly off 2 in a sectional view, wherein the sectional surface extends transversely to the axis of rotation and in the axial direction behind the flange members and through the elastomer body;

4 : the hub assembly off 1 to 3 in a side view in section;

5 : the elastomeric body of the hub assembly 1 to 4 ;

6 a second variant of a hub assembly (without hub part) in a perspective view;

7 : an exploded view of the hub assembly 6 (without hub part) in perspective view;

8th : the hub assembly off 6 and 7 in a side view in section;

9 a detail of a shaft-hub connection with a hub assembly according to 6 to 8th in perspective view;

10 a shaft-hub connection with a hub assembly according to 6 to 9 in a plan view;

11 a third variant of a hub assembly (without hub part) in a perspective view;

12 : an exploded view of the hub assembly 11 (without hub part) in perspective view;

13 : the hub assembly off 11 and 12 in perspective view;

14 : the hub assembly off 11 to 13 in a side view in section; and

15 a shaft-hub connection with a hub assembly according to 11 to 14 in a top view.

1 to 5 show a first variant of a hub assembly 1 and will be described together below. 1 shows this hub assembly 1 in perspective view. 2 shows the hub assembly 1 out 1 in a top view. Fig. Shows the hub assembly 1 out 2 in a sectional view, wherein the sectional area III-III (see 4 ) across the axis of rotation 34 and in the axial direction 16 behind the flange elements 13 and through the elastomeric body 15 runs (in the range of the first inner diameter 22 ). 4 shows the hub assembly 1 out 1 to 3 in a side view in section and 5 the elastomeric body 15 of the hub assembly 1 to 4 ,

The hub assembly 1 includes a hub part 4 with a first gearing 5 having axial section 6 to form a spline 7 with an external toothing 8th a wave 3 , In the area of a first end face 9 has the hub part 4 one, in a radial direction 10 outside the first gearing 5 arranged connection surface 11 for the arrangement of a sleeve 12 on.

The sleeve 12 is on the interface 11 of the hub part 4 arranged and has several, in a circumferential direction 17 evenly distributed and spaced apart, in a radial direction 10 inwardly facing flange elements 13 on. The sleeve 12 makes a recording 14 for an elastomeric body 15 so that the elastomeric body 15 in an axial direction 16 between the flange elements 13 and the first front side 9 of the hub part 4 is arranged.

The annular elastomeric body 15 is in the recording 14 the sleeve 12 arranged and forms with the flange elements 13 the sleeve 12 in a circumferential direction 17 several positive first connections 18 , The elastomer body 15 is designed and arranged so that when arranging a shaft 3 in the hub assembly 1 at least in a first angular range 19 is pressed radially inwards, so that a positive second connection 20 between elastomeric body 15 and external teeth 8th is formed.

The sleeve 12 is on the interface 11 arranged over a press fit.

Here is the one in the picture 14 arranged elastomeric body 15 in a second angular range 21 a first inner diameter 22 on, which is smaller than at least a largest outer diameter 23 (see eg in 10 ) of the external teeth 8th the wave 3 , so when arranging the shaft 3 in the hub assembly 1 the elastomeric body 15 at least in the second angular range 21 is displaced radially outward. This displacement radially outward causes in another angle range, namely z. B. the first angle range 19 , a deformation radially inward, so that the positive-locking second connection 20 between elastomeric body 15 and external teeth 8th is formed.

The elastomer body 15 So when the shaft is arranged 3 in the hub assembly 1 elastically deformed so that it is in at least a first angular range 19 is deformed radially inward and in the outer toothing 8th the wave 3 intervenes. As a result, in particular a positive connection in the circumferential direction 17 between elastomeric body 15 and external teeth 8th the wave 3 educated. As well as between elastomer body 15 and sleeve 12 a positive connection in the circumferential direction 17 present and the sleeve 12 rotatably on the hub part 4 is arranged is one in a circumferential direction 17 mutually braced and thus play-free arrangement of, the spline 7 forming external toothing 8th the wave 3 and the first gearing 5 of the hub part 4 realized.

A tolerance-related backlash of the spline 7 in the circumferential direction 17 This can be eliminated, leaving a substantially backlash-free shaft-hub connection 2 can result. As a result, in particular rattling noises can be avoided even with load changes. In addition, the elastomer body 15 act as a damper, with the help of torsional vibrations can be damped.

Here is the elastomeric body 15 at least in the region of the first inner diameter 22 and in the second angle range 21 one opposite to a direction of insertion 24 the wave 3 radially inward ramp 25 on. Such a ramp 25 facilitates the insertion of the shaft 3 into the hub assembly 1 , in which case the elastomeric body 15 is successively displaced.

6 to 10 show a second variant of a hub assembly 1 and will be described together below. 6 shows a second embodiment of a hub assembly 1 (without hub part 4 ) in perspective view. 7 shows an exploded view of the hub assembly 1 out 6 (without hub part 4 ) in perspective view. 8th shows the hub assembly 1 out 6 and 7 in a side view in section. 9 shows a detail of a shaft-hub connection 2 with a hub assembly 1 according to 6 to 8th in perspective view. 10 shows a shaft-hub connection 2 with a hub assembly 1 according to 6 to 9 in a top view.

The remarks to the 1 to 5 apply accordingly. Here is the elastomeric body 15 at least in one subarea 27 an inner peripheral surface 28 a second gearing 29 to form a spline 7 with the external teeth 8th the wave 3 on. The second gearing 29 in the recording 14 arranged elastomeric body 15 is in alignment with the first gearing 5 of the hub part 4 executed. Here is the elastomer body 15 radially outside of a wire ring 30 surrounded, at least the wire ring 30 by arranging the shaft 3 in the hub assembly 1 at least in a third angular range 31 is displaced radially outward, so that it at least in a first angular range 19 together with the elastomeric body 15 is pressed radially inward. Here is the wire ring 30 in the third angular range 31 a nose 32 out, passing through a recess 33 of the elastomer body 15 extends radially inward, leaving the nose 32 when arranging the shaft 3 in the hub assembly 1 the external toothing 8th contacted and the wire ring 30 is displaced radially outward. Through the recess 33 in the elastomeric body 15 is the nose 32 opposite the second toothing 29 of the elastomer body 15 in their position in the circumferential direction 17 established. Because the second gearing 29 and the first gearing 5 arranged in alignment with each other, contacts the nose 32 the external toothing 8th at a predetermined position, preferably in the region of a largest outer diameter 23 the external toothing 8th ,

In particular, the wire ring 30 made of a metallic wire or sheet metal. In particular, other materials (including non-metallic) for the wire ring 30 suitable. However, these materials should each only a small elongation in the direction of extension of the wire ring 30 allow, so when displacing the wire ring 30 no (or only a slight, especially non-plastic, but preferably exclusively elastic) elongation of the wire ring 30 he follows. So it can be ensured that when arranging the shaft 3 in the hub assembly 1 the wire ring 30 in a third angular range 31 displaced radially outward and resulting in a first angular range 19 the elastomeric body 15 pressed radially inward (into the external toothing 8th the wave 3 ). The movement of the wire ring 30 and the resulting forces on the elastomeric body 15 are with their direction of action as arrows in 10 shown.

11 to 15 show a third variant of a hub assembly 1 and will be described together below. 11 shows a third embodiment of a hub assembly 1 (without hub part 4 ) in perspective view. 12 shows an exploded view of the hub assembly 1 out 11 (without hub part 4 ) in perspective view. 13 shows the hub assembly 1 out 11 and 12 in perspective view. 14 shows the hub assembly 11 to 13 in a side view in section. 15 shows a shaft-hub connection 2 with a hub assembly 1 according to 11 to 14 in a top view.

The remarks to the 1 to 5 and 6 to 10 apply accordingly. Here is the elastomeric body 15 at least in one subarea 27 an inner peripheral surface 28 a second gearing 29 to form a spline 7 with the external teeth 8th the wave 3 on. The second gearing 29 in the recording 14 arranged elastomeric body 15 is in alignment with the first gearing 5 of the hub part 4 executed. Here is the elastomer body 15 radially outside of a wire ring 30 surrounded, at least the wire ring 30 by arranging the shaft 3 in the hub assembly 1 at least in a third angular range 31 is displaced radially outward, so that it at least in a first angular range 19 together with the elastomeric body 15 is pressed radially inward.

The wire ring 30 but has no noses here 32 on, but is executed exclusively annular. Here is the elastomeric body 15 at least in the region of the first inner diameter 22 one opposite to a direction of insertion 24 the wave 3 radially inward ramp 25 on. Such a ramp 25 facilitates in particular the insertion of the shaft 3 into the hub assembly 1 . where then the elastomeric body 15 is successively displaced.

Here is the one in the picture 14 arranged elastomeric body 15 in a second angular range 21 a sliding element 26 on, so when arranging the shaft 3 in the hub assembly 1 the wave 3 the slider 26 contacted and so the elastomeric body 15 with the slider 26 is displaced radially outward. Here includes the slider 26 the elastomeric body 15 on both, in each axial direction 16 pointing pages (see 12 and 14 ).

Here includes the slider 26 the elastomeric body 15 far enough that the ends of the slider 26 on the outer peripheral surface 35 of the elastomer body 15 opposite each other. Here follows the shape of the slider 26 essentially the shape of the elastomeric body 15 , Here is the slider 26 on the elastomeric body 15 (over the entire surface, on all surfaces). The slider 26 covered on the outer peripheral surface 35 the wire ring 30 , so when displacing the slider 26 radially outward also the wire ring 30 in this second angular range 21 is displaced radially outward. The movement of the slider 26 and the wire ring 30 and the resulting forces on the elastomeric body 15 are with their direction of action as arrows in 10 shown.

It is expressly pointed out that this third embodiment also without the wire ring 30 So only with the slider 26 a suitable shaft-hub connection 2 generated. The same applies if only the ring-shaped wire ring 30 and the correspondingly shaped elastomeric body 15 without sliding body 26 is used. The displacement of the correspondingly shaped elastomeric body 15 in the second angular range 21 causes there a displacement of the elastomeric body 15 and with it the wire 30 , The wire 30 thus causes a resultant force in the first angular ranges 19 so that there the elastomeric body 15 in the external teeth 8th is pressed.

LIST OF REFERENCE NUMBERS

1

 hub assembly

2

 Shaft-hub connection

3

 wave

4

 hub part

5

 first gearing

6

 section

7

 splines

8th

 external teeth

9

 First front page

10

 radial direction

11

 interface

12

 shell

13

 flange

14

 admission

15

 elastomer body

16

 axial direction

17

 circumferential direction

18

 first connection

19

 first angular range

20

 second connection

21

 second angular range

22

 first inner diameter

23

 outer diameter

24

 insertion direction

25

 ramp

26

 sliding

27

 subregion

28

 Inner circumferential surface

29

 second gearing

30

 wire ring

31

 third angle range

32

 nose

33

 recess

34

 axis of rotation

35

 Outer circumferential surface

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102010054283 A1 [0002]

Claims (10)

Hub assembly ( 1 ) for a shaft-hub connection ( 2 ) with a coaxially mountable shaft ( 3 ), with a. a hub part ( 4 ), a first gearing ( 5 ) having axial portion ( 6 ) for forming a spline ( 7 ) with an external toothing ( 8th ) of a wave ( 3 ), and in the region of a first end face ( 9 ) one, in a radial direction ( 10 ) outside the first gearing ( 5 ) arranged connecting surface ( 11 ) for the arrangement of a sleeve ( 12 ) having; b. a sleeve ( 12 ) located on the interface ( 11 ) of the hub part ( 4 ) and at least one, in the radial direction ( 10 ) inwardly facing flange element ( 13 ), and the one recording ( 14 ) for an elastomeric body ( 15 ), so that the elastomeric body ( 15 ) in an axial direction ( 16 ) between the flange element ( 13 ) and the first face ( 9 ) of the hub part ( 4 ) is arranged; c. an annular elastomeric body ( 15 ), which is in the recording ( 14 ) of the sleeve ( 12 ) and with the sleeve ( 12 ) in a circumferential direction ( 17 ) a positive first connection ( 18 ) forms; the elastomeric body ( 15 ) is designed and arranged so that when the shaft ( 3 ) in the hub assembly ( 1 ) at least in a first angular range ( 19 ) is pressed radially inward, so that a positive second connection ( 20 ) between the elastomer body ( 15 ) and external teeth ( 8th ) is formed. Hub assembly ( 1 ) according to claim 1, wherein the sleeve ( 12 ) on the interface ( 11 ) is arranged via a press fit. Hub assembly ( 1 ) according to any one of the preceding claims, wherein in the receptacle ( 14 ) arranged elastomeric body ( 15 ) at least in a second angular range ( 21 ) has a first inner diameter ( 22 ) which is smaller than at least a largest outer diameter ( 23 ) of external teeth ( 8th ), so that when the shaft ( 3 ) in the hub assembly ( 1 ) the elastomeric body ( 15 ) at least in the second angular range ( 21 ) is displaced radially outward. Hub assembly ( 1 ) according to claim 3, wherein the elastomeric body ( 15 ) at least in the region of the first inner diameter ( 22 ) one opposite a direction of insertion ( 24 ) the wave ( 3 ) radially inwardly extending ramp ( 25 ) having. Hub assembly ( 1 ) according to claim 3 or 4, wherein in the receptacle ( 14 ) arranged elastomeric body ( 15 ) at least in the one second angular range ( 21 ) at least one sliding element ( 26 ), so that when the shaft ( 3 ) in the hub assembly ( 1 ) the wave ( 3 ) the slider ( 26 ) and so the elastomeric body ( 15 ) with the sliding body ( 26 ) is displaced radially outward. Hub assembly ( 1 ) according to any one of the preceding claims, wherein the elastomeric body ( 15 ) at least in a subarea ( 27 ) an inner peripheral surface ( 28 ) a second toothing ( 29 ) to form the spline ( 7 ) with the external toothing ( 8th ) having. Hub assembly ( 1 ) according to claim 6, wherein the second toothing ( 29 ) of the recording ( 14 ) arranged elastomeric body ( 15 ) in alignment with the first toothing ( 5 ) is executed and arranged. Hub assembly ( 1 ) according to any one of the preceding claims, wherein the elastomeric body ( 15 ) radially outward of a wire ring ( 30 ), wherein at least the wire ring ( 30 ) by arranging the shaft ( 3 ) in the hub assembly ( 1 ) at least in a third angular range ( 31 ) is displaced radially outward, so that it is at least in the first angular range ( 19 ) together with the elastomer body ( 15 ) is pressed radially inward. Hub assembly ( 1 ) according to claim 8, wherein the wire ring ( 30 ) at least in the third angular range ( 31 ) a nose ( 32 ) formed by a recess ( 33 ) of the elastomeric body ( 15 ) extends radially inwards so that the nose ( 32 ) when the shaft is arranged ( 3 ) in the hub assembly ( 1 ) the external toothing ( 8th ) and the wire ring ( 30 ) is displaced radially outward. Shaft-hub connection ( 2 ), at least having a wave ( 3 ) and one on the shaft ( 3 ) arranged hub assembly ( 1 ) according to one of claims 1 to 9, wherein shaft ( 3 ) and hub assembly ( 1 ) a common axis of rotation ( 34 ) exhibit.

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