DE102016216937A1 - Clamping arrangement for a drive train of a motor vehicle - Google Patents

Abstract

The invention relates to a bracing arrangement for a drive train of a motor vehicle, comprising an axial plug connection between a motor-side first subunit and a transmission-side second subunit; wherein the plug connection is formed by a profiling on the first subunit and a counter profiling on the second subunit, wherein at least one subunit comprises at least one Verspannblech and a flange member which together form the profiling or the counter profiling, wherein the flange member is an output flange of a torsional vibration damper or a Input flange of a coupling device, wherein prior to formation of the connector, the Verspannblech and the flange in the circumferential direction in opposite directions braced against each other can be arranged and against the tension acting on them in a circumferential direction by an angular amount to each other rotated first position by means of at least one holding element can be fixed , Wherein the holding element, during or after assembly and by the formation of the connector, at least partially displaceable from a first position to a second position, in the the clamping of Verspannblech and flange solved and thus at least partial, circumferential clamping of the connector, wherein the at least one retaining element is attached as a separate component on the flange.

Description

The invention relates to a bracing arrangement for a drive train of a motor vehicle, with the aid of a plug connection between a transmission-side subunit, for example a double clutch, with a motor-side subunit, such as a dual mass flywheel, can be biased in the circumferential direction backlash to avoid noise during load changes.

From the WO 2007/000151 A2 a Verspannanordnung is known in which a dual mass flywheel via a spline with a double clutch rotation but axially slidably connected, wherein an output flange of the dual mass flywheel is connected via a tooth-shaped profiling with a corresponding counter-profiling of an input flange of the double clutch. In order to avoid noise during load changes, the output flange of the dual mass flywheel is coupled via a bow spring with a Verspannblech having a protruding U-shaped mounting tab which can engage around a tooth of the tooth profiling of the output flange in the circumferential direction over its open end.

From the WO 2012/031582 A1 is another tensioning arrangement for a drive train of a motor vehicle known. The bracing arrangement has a flange, in particular an output flange of the torsional vibration damper or input flange of the clutch unit, wherein the flange has a profiling for transmitting a torque in the circumferential direction of a counter-profiling. In addition, a spring member fixed to the flange via a first end is provided for providing a biasing force in the circumferential direction from the flange to the counter profile, and a bracing sheet connected to a second end of the spring member. In this case, the bracing plate is supported substantially at the radial height of the profiling of the flange in the circumferential direction via an only axially extending fastening tab on the opposite profile. Here, the axial positioning of the bracing plate by means of a guided in a corresponding arc groove of the flange spacer bolt, via which the bracing plate is connected to the flange in the circumferential direction relatively rotatable but captive. Occurring axial forces can be removed over a large area between the flange and the Verspannblech. The fastening strap is designed as a substantially two-dimensional body with a sheet metal thickness corresponding to the clamping plate. Here, the fastening tab is designed as a radially projecting tooth of a spline. The WO 2012/031582 A1 is hereby incorporated by reference.

Also in the WO 2007/000131 a drive connection via two subunits is described. Here, the tension between the profiling and counter profiling also takes place in the circumferential direction. As a result, a virtually backlash-free intervention can be ensured. Due to the existing between the two components bracing and a certain torsionally elastic connection between the profiling and counter profiling can be realized. The torsional rigidity of this elastic tension is dependent on the force which is applied by at least one energy store, which clamps the two components, such as, for example, a helical compression spring.

In general, the torsional rigidity generated between the profiling and the counterprofiling can be, in particular, of the order of magnitude of between 10 and 60 Newton meters per degree of angle.

In order to facilitate the assembly of the profiling and the counter profiling, individual components forming the profiling and / or the counter profiling are formed from individual parts which are braced in the circumferential direction in opposite directions to each other, such as, in particular, partial serrations (eg in FIGS WO 2012/031582 A1 : Profiling of the flange and fastening strap on the clamping plate). These components are held counter to the clamping force acting on them in a circumferentially rotated by an angular amount to each other by means of at least one holding element, so that a substantially force-free assembly of the axial connector forming profiling and counter-profiling is possible. When assembling or after joining the profiling and counter profiling, the holding element can be brought into a position in which the tension of the individual parts is released and an at least partial circumferential clamping of the plug connection is effected. The individual parts form a profiling or counter profiling which can be varied in width (in the circumferential direction) and which are then braced without play in the interspace in which they respectively engage.

Proceeding from this, the present invention has the object, at least partially overcome the known from the prior art disadvantages and in particular to show a bracing in which the holding element can be arranged in a particularly simple and space-saving manner. Furthermore, the retaining element should be arranged so that the tension of the assembled connector can be solved again and thus disassembly of the connector is facilitated.

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.

The invention relates to a bracing arrangement for a drive train of a motor vehicle, comprising an axial plug connection between a motor-side first subunit and a transmission-side second subunit, wherein the connector is clamped in a circumferential direction. The plug connection is formed by a profiling on the first subunit and a counter profiling on the second subunit, wherein at least one subunit comprises at least one Verspannblech and a flange member which together form the profiling or the counter profiling, wherein the flange member is an output flange of a torsional vibration damper or an input flange a coupling device. Before the plug connection is formed, the clamping plate and the flange element can be clamped in opposite directions in the circumferential direction and can be fixed against the first position by means of at least one holding element in the circumferential direction by an angle relative to the clamping force acting on them in angular direction, so that one in width (In the circumferential direction) changed profiling or counter profiling formed and a substantially force-free assembly of the axial plug connection forming profiling and counter profiling along an axial direction is possible, wherein the holding element, during or after assembly and by the formation of the connector, at least partially from a first layer can be displaced into a second position, in which the tension of Verspannblech and flange element dissolved and so at least partial, circumferential clamping of the connector takes place (second position), wobe i, the at least one retaining element is fastened as a separate component on the flange element or on the bracing plate and / or the displacement of the retaining element into the second layer takes place essentially in a radial direction.

It is in particular to the bracing according to WO 2012/031582 A1 directed. This document is hereby incorporated by reference. In the context of the present invention, another locking device is proposed which does not as in the WO 2012/031582 A1 proposed by a start of the drive unit is triggered but weggesteuert by a displacement during the formation of the connector.

Here, the holding element as a separate component (that is not materially connected or integrally connected to the flange) executed. This has the advantage that the retaining element can be made independently of the flange and the Verspannblech and thus in particular consists of a different material and has different thicknesses.

Usually, the flange element (and in particular also the Verspannblech) consists of a case-hardened steel material, which allows only a small degree of elastic deformation. The retaining element is but in particular made of a spring steel, ie z. B. a spring plate, which is elastically deformable to a considerable extent.

In particular, the displacement of the retaining element in the second position takes place substantially in a radial direction. This means that the holding element is moved substantially only in the radial direction. A movement in the axial direction (that is, along an axis of rotation of the bracing arrangement) is thus unnecessary. Since in particular the space in the axial direction is very limited in such bracing devices, a nearly exclusive deformation in the radial direction is particularly advantageous.

It should be noted that this feature (displacement in the radial direction) itself is also an invention and therefore can be tracked independently of the feature of mounting the retaining element as a separate component on the flange element.

In particular, the displacement takes place in the second position by an elastic deformation of the holding element.

In particular, the retaining element can spring back into the first position, when the Verspannblech and the flange are rotated to solve the tension of the connector in the circumferential direction in opposite directions to each other. The retainer can thus cooperate again with a stop on the bracing plate (when the retainer is attached to the flange member) or on the flange member (when the retainer is attached to the brace), and flange member and brace against the biasing force acting on them in an angular amount in the circumferential direction fix each other in a twisted first position. Thus, in particular in repair or maintenance, the connector can be released force-free again.

In particular, the retaining element fastened to the bracing plate or flange element acts with a stop on the other component of Flange element and Verspannblech together, so that the holding element in the first position, the flange member and the Verspannblech fixed against the acting in the circumferential direction of the clamping force in the first position.

Preferably, the holding element, for releasing the connection of stop and holding element in the displacement in the second position, in the region of the stop in a radial direction movable.

In particular, the bracing arrangement comprises a plurality of retaining elements, in particular exactly two, which are arranged along the circumferential direction at equal intervals on the flange element or on Verspannblech.

In particular, the holding element comprises an elastically deformable portion which extends into an intermediate space of the profiling or counter profiling of a subunit, this section being displaced by the counter profiling or profiling of the other subunit during assembly of the connector substantially in a radial direction.

In particular, the holding element fastened to the flange element extends, starting from the flange element, in the axial direction and in the radial direction via the bracing plate arranged on the flange element, into an intermediate space of the profiling or counter profiling arranged on the flange element.

In particular, the retaining element can be arranged and fastened on a side of the bracing arrangement facing the drive unit or the transmission on the flange element or the bracing sheet.

Further, a motor vehicle with a drive unit and a transmission is proposed, wherein a tensioning arrangement according to the invention is arranged between the drive unit and the transmission.

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 motor-side subunit with a flange and a Verspannblech and a profiling, in perspective view;

2 a gear-side subunit with a counter-profiling, in perspective view;

3 a holding element in perspective view;

4 : a detail from 1 ;

5 a connector of the subunits in a position prior to assembly, in perspective view;

6 : a detail from 5 ;

7 : a plug connection of the subunits in an assembly during assembly, in perspective view;

8th : a detail from 7 ; and

9 : a connector of the subunits in a position after assembly, in perspective view.

1 shows a motor-side first subunit 3 with a flange element 9 and a clamping plate 8th as well as a profiling 6 , in perspective view. The flange element 9 here is a starting flange 10 a torsional vibration damper. Before formation of the connector 2 are the clamping plate 8th and the flange member 9 in the circumferential direction 5 arranged in opposite directions braced against each other and against the force acting on them in a clamping force in the circumferential direction 5 by an angular amount 11 (please refer 9 ) to each other, about a common axis of rotation 26 , twisted first position 12 by means of two retaining elements 13 fixed so that one in width 14 (in the circumferential direction 5 ) changed profiling 6 is formed. The in width 14 changeable profiling 6 will be here, as in the WO 2012/031582 A1 described, between the on Verspannblech 8th arranged fastening straps 29 and profiling 6 on the flange element 9 educated.

The retaining element 13 are along the circumferential direction 5 at the same distance 20 on the flange element 9 arranged. The holding elements 13 are as separate components on the flange 9 attached.

2 shows a transmission-side second subunit 4 with a counter profiling 7 , in perspective view.

3 shows a holding element 13 in perspective view and 4 a detail from 1 , The holding element 13 has openings 28 for fastening means, with which the retaining element 13 as a separate component on the flange 9 can be attached. The holding element 13 includes one elastically deformable section 21 that is in a gap 22 the profiling 6 the first subunit 3 extends, this section 21 through the counter profiling 7 the other subunit 4 when assembling the connector 2 (exclusively) in a radial direction 18 is displaced.

The holding element 13 extends, starting from the flange element 9 in the axial direction 15 and in the radial direction 18 over that, on the flange element 8th arranged bracing plate 8th , into a gap 22 at the flange 9 arranged profiling 6 ,

The holding element 13 acts with a stop 19 on the clamping plate 8th together, leaving the retaining element 13 in the first position 16 the flange element 9 and the clamping plate 8th against in the circumferential direction 5 acting clamping force in the first position 12 fixed.

5 shows a motor vehicle 23 with a plug connection 2 subunits 3 . 4 in a first position 12 before mounting the subunits 3 . 4 , in perspective view. The motor-side first subunit 3 with a flange element 9 and a clamping plate 8th as well as a profiling 6 is torque transmitting with a drive unit 24 connected. The transmission-side second subunit 4 with a counter profiling 7 is torque transmitting with a gearbox 25 connected. The two retaining elements 13 are at a the gearbox 25 facing side of the bracing 1 on the flange element 9 arranged and fastened.

6 shows a detail 5 , Here are profiling 6 and counter profiling 7 aligned with each other so that a, substantially force-free assembly of the connector 2 along the axial direction 15 (along the axis of rotation 26 ) is possible.

7 shows a plug connection 2 subunits 3 . 4 in an arrangement during assembly, in perspective view. 8th shows a detail 7 , Here are the clamping plate 8th and the flange member 9 still in the circumferential direction 5 arranged in opposite directions braced against each other and against the force acting on them in a clamping force in the circumferential direction 5 by an angular amount 11 (please refer 9 ) to each other, about a common axis of rotation 26 , twisted first position 12 by means of the retaining elements 13 fixed so that one in width 14 (in the circumferential direction 5 ) changed profiling 6 (with the fastening straps 29 ) is formed. A substantially force-free assembly of the connector 2 along the axial direction 15 (along the axis of rotation 26 ) is possible.

Here is the holding element 13 after assembling the subunits 3 . 4 and by the formation of the connector 2 from a first location 16 in a second location 17 displaced while elastically deformed. Here is the holding element 13 , to release the connection from stop 19 and holding element 13 when displacing to the second position 17 , in the area of the stop 19 in the radial direction 18 movable.

9 shows a plug connection 2 subunits 3 . 4 in a second position 27 after assembly, in perspective view. When releasing the connection from stop 19 and holding element 13 is the tension of Verspannblech 8th and flange element 9 solved and so an at least partial, circumferential clamping of the connector 2 allows (second position 27 ).

Before formation of the connector 2 are clamping plate 8th and flange element 9 in the circumferential direction 5 arranged in opposite directions braced against each other and against the force acting on them in a clamping force in the circumferential direction 5 by an angular amount 11 to each other, about a common axis of rotation 26 , twisted first position 12 by means of two retaining elements 13 fixed. So one is in width 14 (in the circumferential direction 5 ) changed profiling 6 educated. The in width 14 changeable profiling 6 is between the on the Verspannblech 8th arranged fastening straps 29 and profiling 6 on the flange element 9 educated. By releasing the tension of the clamping plate 8th and flange element 9 move clamping plate 8th and flange element 9 to each other along the circumferential direction 5 , so that an at least partial, circumferential clamping of the connector 2 is formed, here between mounting straps 29 , Profiling 6 and counter profiling 7 , Verspannblech 8th and flange element 9 are now in a second position 27 to each other.

In particular, the retaining element 13 from the present here second layer 17 back to the first position 16 springs when the bracing plate 8th and the flange member 9 to solve the tension of the connector 2 in the circumferential direction 5 in opposite directions to each other (against the tension) to be twisted. The holding element 13 so again with the stop 19 on the clamping plate 8th interact and flange element 9 and clamping plate 8th against the tensioning force acting on them in a circumferential direction 5 by an angular amount 11 twisted to each other first position 12 fix. Thus, in particular in repair or maintenance, the connector 2 (after releasing the tension and fixing the clamping plate 8th and flange element 9 in the first position 12 ) be released force-free again.

LIST OF REFERENCE NUMBERS

1

 Verspannanordnung

2

 connector

3

 first subunit

4

 second subunit

5

 circumferential direction

6

 profiling

7

 against profiling

8th

 Verspannblech

9

 flange

10

 output flange

11

 angular amount

12

 first position

13

 retaining element

14

 width

15

 axial direction

16

 first location

17

 second location

18

 radial direction

19

 attack

20

 distance

21

 section

22

 gap

23

 motor vehicle

24

 drive unit

25

 transmission

26

 axis of rotation

27

 Second position

28

 opening

29

 mounting tab

30

 Move

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

• WO 2007/000151 A2 [0002]
• WO 2012/031582 A1 [0003, 0003, 0006, 0010, 0010, 0034]
• WO 2007/000131 [0004]

Claims (9)

Bracing arrangement ( 1 ) for a drive train of a motor vehicle ( 23 ), comprising an axial plug connection ( 2 ) between a motor-side first subunit ( 3 ) and a transmission-side second subunit ( 4 ), whereby the plug connection ( 2 ) in a circumferential direction ( 5 ) is clamped; where the connector ( 2 ) by profiling ( 6 ) at the first subunit ( 3 ) and a counter profiling ( 7 ) at the second subunit ( 4 ), wherein at least one subunit ( 3 . 4 ) at least one bracing plate ( 8th ) and a flange element ( 9 ), which together form the profiling ( 6 ) or the counter profiling ( 7 ), wherein the flange element ( 9 ) an output flange ( 10 ) of a torsional vibration damper or an input flange of a coupling device, wherein prior to formation of the connector ( 2 ) the bracing plate ( 8th ) and the flange element ( 9 ) in the circumferential direction ( 5 ) can be arranged braced in opposite directions to one another and against the tensioning force acting on them in a direction in the circumferential direction ( 5 ) by an angular amount ( 11 ) to each other rotated first position ( 12 ) by means of at least one holding element ( 13 ) are fixable, so that one in width ( 14 ) changed profiling ( 6 ) or counter profiling ( 7 ) and a substantially force-free assembly of the axial connector ( 2 ) profiling ( 6 ) and counter profiling ( 7 ) along an axial direction ( 15 ) is possible, wherein the retaining element ( 13 ), during or after assembly, and by the formation of the connector ( 2 ), at least partially from a first location ( 16 ) in a second position ( 17 ) is displaceable, in which the clamping of Verspannblech ( 8th ) and flange element ( 9 ) and thus an at least partial, circumferential clamping of the connector ( 2 ), wherein the at least one retaining element ( 13 ) as a separate component on the flange element ( 9 ) or on the clamping plate ( 8th ) is attached. Bracing arrangement ( 1 ) according to claim 1, wherein the displacement of the retaining element ( 13 ) in the second position ( 17 ) substantially in a radial direction ( 18 ) he follows. Bracing arrangement ( 1 ) according to one of the preceding claims, wherein the displacement into the second layer ( 17 ) by an elastic deformation of the retaining element ( 13 ) he follows. Bracing arrangement ( 1 ) according to one of the preceding claims, wherein the on Verspannblech ( 8th ) or flange element ( 9 ) fastened retaining element ( 13 ) with a stop ( 19 ) on the other component of flange element ( 9 ) and clamping plate ( 8th ) cooperates, so that the retaining element ( 13 ) in the first situation ( 16 ) Flange element ( 9 ) and clamping plate ( 8th ) against in the circumferential direction ( 5 ) acting clamping force in the first position ( 12 ) fixed. Bracing arrangement ( 1 ) according to claim 4, wherein the retaining element ( 13 ), to release the connection from stop ( 19 ) and retaining element ( 13 ) when displacing into the second position ( 17 ), in the area of the attack ( 19 ) in a radial direction ( 18 ) is movable. Bracing arrangement ( 1 ) according to one of the preceding claims, wherein the bracing arrangement ( 1 ) a plurality of retaining elements ( 13 ), which along the circumferential direction ( 5 ) at equal intervals ( 20 ) are arranged. Bracing arrangement ( 1 ) according to one of the preceding claims, wherein the retaining element ( 13 ) an elastically deformable section ( 21 ) extending into a space ( 22 ) profiling ( 6 ) or counter profiling ( 7 ) of a subunit ( 3 . 4 ), this section ( 21 ) by the counter profiling ( 7 ) or profiling ( 6 ) of the other subunit ( 4 . 3 ) when assembling the plug connection ( 2 ) substantially in a radial direction ( 18 ) is displaced. Bracing arrangement ( 1 ) according to any one of the preceding claims, wherein the on the flange ( 9 ) fastened retaining element ( 13 ), starting from the flange element ( 9 ), in the axial direction ( 15 ) and in the radial direction ( 18 ) over which, on the flange element ( 9 ) arranged clamping plate ( 8th ) and into a gap ( 22 ) on the flange ( 9 ) profiling ( 6 ) or counter profiling ( 7 ). Motor vehicle ( 23 ) with a drive unit ( 24 ) and a transmission ( 25 ), between drive unit ( 24 ) and gearboxes ( 25 ) a bracing arrangement ( 1 ) is arranged according to one of the preceding claims.

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