WO2017045679A2 - Bracing 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, said arrangement having an axial plug-in connection between a first sub-assembly on the motor side and a second sub-assembly on the transmission side; wherein the plug-in connection is formed by a profiled portion on the first sub-assembly and a counter-profiled portion on the second sub-assembly and at least one sub-assembly comprises at least one bracing plate and a flange element, which together form the profiled portion or the counter-profiled portion. The flange element is an output flange of a torsional vibration damper or an input flange of a coupling device. Prior to the formation of the plug-in connection, the bracing plate and the flange element can be braced in the circumferential direction in opposite directions relative to one another and can be fixed against the bracing force acting on them in a first position with an angled offset relative to one another in the circumferential direction, by means of at least one retaining element, wherein the retaining element, during or after the combining process and as a result of the formation of the plug-in connection, can be forcibly pushed, at least partially, from a first location into a second location, in which the bracing of the bracing plate and flange element is released, thus producing an at least partial circumferential bracing action on the plug-in connection, the at least one retaining element being secured as a separate component on the flange element.

Description

 Clamping arrangement for a drive train of a motor vehicle

The invention relates to a Verspannanordnung 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.

A bracing arrangement is known from WO 2007/000151 A2, in which a dual mass flywheel is non-rotatably but axially displaceably connected to a double clutch via an interlocking toothing, wherein an output flange of the dual mass flywheel is connected via a tooth-shaped profiling to 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 WO 2012/031582 A1 a further bracing arrangement for a drive train of a motor vehicle is 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 mating profile and connected to a second end of the spring member

Verspannblech provided. 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. occurrence Tende axial forces can thereby large area between the flange and the

Clamping plate to be removed. 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. WO 2012/031582 A1 is hereby incorporated by reference in its entirety.

Also in 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 depends 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 generated between the profiling and counter profiling

Torsional rigidity in particular in the order of 10 to 60 Newton meters per degree of angle are.

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 braced in opposite directions in the circumferential direction, such as, in particular, partial serrations (eg in 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 one in width (in Starting direction) variable profiling or counter profiling, which are then braced without play in the space in which they engage respectively.

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 connector is formed by a profiling on the first subunit and a counter profiling on the second subunit, wherein at least one subunit at least one

Clamping plate and a flange comprises, 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 of a coupling device. Prior to the formation of the connector, the bracing plate and the flange are clamped in the circumferential direction in opposite directions to each other and can be fixed against the biasing force acting on them in a circumferentially rotated by an angular amount to each other first position by means of at least one holding element, so that one in width formed (in the circumferential direction) changed profiling or counter-profiling and a substantially force-free assembly of the axial connector forming profiling and Counter profiling along an axial direction is possible, wherein the retaining 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 which the tension of Verspannblech and flange solved and thus at least one partial, circumferential clamping of the connector takes place (second position), wherein the at least one retaining element is attached as a separate component on the flange or the Verspannblech and / or the displacement of the retaining element takes place in the second position substantially in a radial direction.

Reference is made in particular to the bracing arrangement according to WO 2012/031582 A1. This document is hereby incorporated by reference. In the context of the present invention, another locking device is proposed which is not triggered by a start of the drive unit as proposed in WO 2012/031582 A1 but is controlled away by a displacement during the formation of the plug connection.

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

Clamping plate) made of a hardened steel material, which allows only a slight 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. In particular, the space in the axial direction in such Clamping devices is very limited, a nearly exclusive Verfornnung 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 retaining element can thus cooperate again with a stop on the Verspannblech (when the holding element is attached to the flange) or on the flange (when the holding element is attached to the Verspannblech) and flange and Verspannblech against the force acting on them in a clamping force in the circumferential direction by an angular amount 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 the flange element and

Clamping plate together, so that the holding element in the first position the

Flange element 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 Umfangsnchtung at equal intervals on the flange or the 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:

Fig. 1: a motor-side subunit with a flange and a

Clamping plate and a profiling, in perspective view; FIG. 2 shows a transmission-side subunit with a counter profiling, in a perspective view; FIG.

3 shows a holding element in a perspective view;

Fig. 4: a detail of Fig. 1;

5 shows a plug connection of the subunits in a position before assembly, in a perspective view;

Fig. 6: a detail of Fig. 5;

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

Fig. 8: a detail of Fig. 7; and

Fig. 9: a plug connection of the subunits in a position after assembly, in a perspective view.

1 shows a motor-side first subunit 3 with a flange element 9 and a bracing plate 8 and a profiling 6, in a perspective view. The flange 9 is here an output flange 10 of a torsional vibration damper. Prior to the formation of the connector 2, the Verspannblech 8 and the flange 9 are arranged braced in the circumferential direction 5 in opposite directions to each other and against the tension acting on them in one in the circumferential direction 5 by an angular amount 1 1 (see Fig. 9) to each other a common axis of rotation 26, twisted first position 12 is fixed by means of two holding elements 13, so that in the width 14 (in the circumferential direction 5) changed profiling 6 is formed. The variable in width 14 profiling 6 is here, as described in WO 2012/031582 A1, between the arranged on Verspannblech 8 mounting tabs 29 and the profiling 6 on the flange 9 is formed. The holding element 13 are arranged along the circumferential direction 5 at the same distance 20 on the flange element 9. The holding elements 13 are attached as separate components on the flange 9.

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

FIG. 3 shows a holding element 13 in a perspective view and FIG. 4 shows a detail from FIG. 1. The holding element 13 has openings 28 for fastening means with which the holding element 13 can be fastened as a separate component on the flange element 9. The holding element 13 comprises an elastically deformable portion 21, which extends into a gap 22 of the profiling 6 of the first subunit 3, said portion 21 by the counter profiling 7 of the other subunit 4 during assembly of the connector 2 (exclusively) in a radial direction 18th is displaced.

The holding element 13 extends, starting from the flange element 9, in the axial direction 15 and in the radial direction 18 via the clamping plate 8 arranged on the flange element 8, into an intermediate space 22 of the profiling 6 arranged on the flange element 9.

The holding element 13 cooperates with a stop 19 on the clamping plate 8, so that the holding element 13 fixes the flange element 9 and the clamping plate 8 in the first position 16 in the first position 12 against the clamping force acting in the circumferential direction 5.

Fig. 5 shows a motor vehicle 23 with a connector 2 of the sub-units 3, 4 in a first position 12 prior to assembly of the sub-units 3, 4, in a perspective view. The motor-side first subunit 3 with a flange 9 and a Verspannblech 8 and a profiling 6 is connected to transmit torque to a drive unit 24. The transmission-side second subunit 4 with a counter-profiling 7 is connected with a transmission 25 to transmit torque. The two holding elements 13 are arranged on a side facing the gear 25 of the Verspannanordnung 1 to the flange 9 and fixed. FIG. 6 shows a detail from FIG. 5. Profiling 6 and counter-profiling 7 are aligned with one another in such a way that a substantially force-free joining of the plug connection 2 along the axial direction 15 (along the axis of rotation 26) is possible.

Fig. 7 shows a connector 2 of the sub-units 3, 4 in an assembly during assembly, in a perspective view. 8 shows a detail from FIG. 7. Here, the bracing plate 8 and the flange element 9 are still braced in opposite directions relative to one another in the circumferential direction 5 and counter to the tensioning force acting on them in a circumferential direction 5 by an angular amount 11 (FIG. see Fig. 9) to each other, about a common axis of rotation 26, twisted first position 12 fixed by means of the holding elements 13, so that in the width 14 (in the circumferential direction 5) changed profiling 6 (with the fastening tabs 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, the retaining element 13 is displaced after the joining of the subunits 3, 4 and by the formation of the connector 2 from a first layer 16 into a second layer 17 and thereby elastically deformed. In this case, the holding element 13, for releasing the connection of stop 19 and holding element 13 during the displacement in the second position 17, in the region of the stopper 19 in the radial direction 18 movable.

Fig. 9 shows a connector 2 of the sub-units 3, 4 in a second position 27 after assembly, in a perspective view. When releasing the connection of stop 19 and retaining element 13, the tension of Verspannblech 8 and flange 9 is released and so at least partial, circumferential clamping of the connector 2 allows (second position 27).

Before formation of the connector 2 Verspannblech 8 and flange 9 are arranged clamped in the circumferential direction 5 in opposite directions to each other and against the tension acting on them in an in the circumferential direction 5 by an angle to each other 1 1, about a common axis of rotation 26, twisted first position 12 fixed by means of two retaining elements 13. So one is in the Width 14 (in Umfangsnchtung 5) changed profiling 6 formed. The variable in width 14 profiling 6 is formed between the mounting plate 29 arranged on the Verspannblech 8 and the profiling 6 on the flange 9. By releasing the tensioning of the clamping plate 8 and the flange element 9, the clamping plate 8 and flange element 9 move relative to one another along the circumferential direction 5, so that an at least partial circumferential clamping of the plug connection 2 is formed, here between fastening straps 29, profiling 6 and counter-profiling 7 Clamping plate 8 and flange element 9 are now in a second position 27 to each other.

In particular, the holding element 13 from the present here second layer 17 spring back into the first layer 16 when the Verspannblech 8 and the flange 9 to solve the tension of the connector 2 in the Umfangsnchtung 5 in opposite directions to each other (against the tension) are rotated , The holding member 13 can thus again cooperate with the stop 19 on the Verspannblech 8 and flange 9 and Verspannblech 8 against the tension acting on them in a in the Umfangsnchtung 5 by an angle 1 1 1 mutually rotated first position 12 fix. Thus, in particular in the repair or maintenance case, the connector 2 (after canceling the tension and fix Verspannblech 8 and flange 9 in the first position 12) can be released without force again.

LIST OF REFERENCES

Verspannanordnung

 connector

first subunit

second subunit

circumferentially

profiling

against profiling

Verspannblech

flange

output flange

angular amount

first position

retaining element

width

axial direction

first location

second location

radial direction

attack

distance

section

gap

motor vehicle

drive unit

transmission

 axis of rotation

Second position

opening

 mounting tab

 Move

Claims

claims 1 . Clamping 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), wherein the plug connection (2) in a circumferential direction (5) is clamped; wherein the plug connection (2) is formed by a profiling (6) on the first subunit (3) and a counter profiling (7) on the second subunit (4), wherein at least one subunit (3, 4) comprises at least one bracing plate (8) and a flange element (9) which together form the profiling (6) or the counter profiling (7), wherein the flange element (9) is an output flange (10) of a torsional vibration damper or an input flange of a coupling device, wherein prior to formation of the plug connection (2 ) the Verspannblech (8) and the flange (9) in the circumferential direction (5) in opposite directions can be arranged braced and against the tension acting on them in a circumferential direction (5) by an angular amount (1 1) to each other twisted first Position (12) by means of at least one holding element (13) are fixable, so that in the width (14) changed profiling (6) or counter profiling (7) formed and ei n substantially force-free joining of the axial plug connection (2) forming profiling (6) and counter profiling (7) along an axial direction (15) is possible, wherein the holding element (13), during or after assembly and by the formation of the connector (2), at least partially from a first layer (16) in a second layer (17) is displaceable, in which the tension of Verspannblech (8) and flange (9) dissolved and so at least partial, circumferential clamping of the connector (2 ), wherein the at least one retaining element (13) is fastened as a separate component on the flange element (9) or on the bracing plate (8). Second bracing assembly (1) according to claim 1, wherein the displacement of the holding element (13) in the second layer (17) substantially in a radial direction (18). 3. bracing arrangement (1) according to one of the preceding claims, wherein the displacement in the second layer (17) by an elastic deformation of the holding element (13). 4. bracing arrangement (1) according to one of the preceding claims, wherein the clamping plate (8) or flange (9) fixed holding element (13) with a stop (19) on the other component of flange (9) and Verspannblech (8) cooperates, such that the holding element (13) in the first position (16) fixes the flange element (9) and the clamping plate (8) in the first position (12) against the clamping force acting in the circumferential direction (5). 5. bracing assembly (1) according to claim 4, wherein the holding element (13), for releasing the connection of stop (19) and retaining element (13) in the displacement in the second layer (17), in the region of the stop (19) in a radial direction (18) is movable. 6. bracing assembly (1) according to any one of the preceding claims, wherein the bracing assembly (1) comprises a plurality of holding elements (13) which are arranged along the circumferential direction (5) at equal intervals (20). 7. bracing assembly (1) according to any one of the preceding claims, wherein the holding element (13) comprises an elastically deformable portion (21) in a gap (22) of the profiling (6) or counter profile (7) of a subunit ( 3, 4), wherein this section (21) by the counter-profiling (7) or profiling (6) of the other subunit (4, 3) during assembly of the connector (2) is displaced substantially in a radial direction (18). 8. bracing assembly (1) according to any one of the preceding claims, wherein the flange element (9) fixed to the holding element (13), starting from the flange member (9), in the axial direction (15) and in the radial direction (18) via the clamping plate (8) arranged on the flange element (9) and extending into a gap (22) of the flange (9) arranged profiling (6) or counter-profiling (7). 9. Motor vehicle (23) with a drive unit (24) and a transmission (25), wherein between the drive unit (24) and transmission (25) a bracing arrangement (1) is arranged according to one of the preceding claims.