DE102015217830A1 - Clutch for motor vehicle - Google Patents

Abstract

The invention relates to a clutch (1) for a motor vehicle, in particular double clutch, with at least one inner disk carrier (2) and with at least one outer disk carrier (3), wherein on the inner disk carrier (2) inner disks (2a) and on the outer disk carrier (3) outer disks (3a) can be arranged and / or arranged, wherein a laminated core (4) is formed and / or formed by correspondingly layered inner and outer disks (2a, 3a), wherein in the region of the disk package (4) at least one spring element (5), in particular a plurality of spring elements (5) is or are provided for at least partial fanning of the disk set (4), wherein the disk set (4), in particular by at least one actuating piston, during normal operation of the clutch (1) against the spring force of the spring element (5) or The spring elements (5) can be pressurized, and at least one support element (6) is provided for the axial support of the plate pack (4)

Description

The invention relates to a clutch for a motor vehicle, in particular a double clutch according to the features of the preamble of claim 1.

In the prior art, a plurality of clutches, in particular of friction clutches for a motor vehicle are known. In particular, dual clutches are known for dual-clutch transmission in motor vehicles, in which the dual clutch then has a first and a second friction clutch, in particular to connect a motor shaft with a first and a second transmission input shaft of the dual-clutch transmission rotationally effective. Such clutches or each of the two friction clutches has at least one inner disk carrier and at least one outer disk carrier. On the inner disk carrier a plurality of inner disks and on the outer disk carrier a plurality of outer disks are arranged. The in particular alternately stacked inner and outer plates form a so-called plate pack. In order to realize a fanning out or a spreading of the disk pack, at least one spring element, in particular a plurality of spring elements, is provided in the area of the disk pack. In particular, such spring elements are designed as corrugated springs and arranged in the region of the disk pack, that the outer disks are fanned out effectively, so then to prevent a direct abutment of inner and outer disks. The disk set is compressed in normal operation of the clutch against the spring force of the spring element or against the spring forces of the spring elements designed as corrugated springs, therefore, in particular therefore druckbeaufschlagbar. The loading of the disk set is realized in particular by an actuating piston or, for example. Alternatively, by further separately arranged spring elements, depending on the specific embodiment of the respective clutch. In general normal operation of the clutch, therefore, the spring assembly is pressurized to close the clutch against the spring force of the particular designed as corrugated spring elements, so that a corresponding torque from the inner disk carrier on the outer disk carrier (or vice versa) by means of the pressurized disk set is transferable. At least one support element is provided for the axial support of the inner and outer disks laminated between the inner and outer disk carrier, in particular these support elements known in the prior art are usually designed as so-called securing or snap rings.

So will in the DE 10 2005 007 384 A1 discloses a dual clutch having two friction clutches, wherein for the axial support of the disk set a trained as a securing element or as a snap ring support member is provided. Not in the entrance area or not in the insertion area of the respective inner and outer disk carrier, but at the respective end of the outer disk carrier, an annular groove is provided, in which the snap ring engages, wherein a separate support plate is axially supported via the snap ring or is supportable. The snap ring arranged in the annular groove is radially secured and has an axially precisely defined installation position, wherein in normal operation of the clutch, the support element / the snap ring rests tightly against the support disk without a special axial play. A similarly trained clutch is used in the DE 10 2007 042 810 A1 discloses, in which case the radial securing of the snap ring is then realized even in an axial clearance between the end plate and the snap ring.

In both clutches described above, the support element or the securing element / the snap ring is not arranged in the input area, ie not in the front area (for insertion of the inner and outer disks) of a disk carrier and / or trained, but in the respective opposite end portion of the disk carrier , Also, the positioning of the known in the prior art support element has no significant effect on the fanning of the disk set in the pre-assembly of the coupling.

Finally, out of the DE 10 2010 044 379 A1 a clutch for a motor vehicle, in which the double clutch designed as a clutch has two arranged in a plane friction clutches. In the middle between the two friction clutches, a support element designed as a support ring is provided for each friction clutch. Along the circumference of the support element hook-shaped lugs are formed, with the help of which the support element can be screwed into an annular groove of a disk carrier. By this type and arrangement of the support element, in particular the respective plate carrier is structurally strong or reinforced accordingly.

The couplings known in the prior art are therefore not optimally formed in the pre-assembly under the aspect of pre-assembled state or the arrangement of a disk set. During pre-assembly, the inner and outer disks are correspondingly layered, in particular preferably inserted alternately into the corresponding respective axial grooves of the inner and outer disk carrier in the entry region of the respective inner and outer disk carrier. Furthermore, in particular between the outer disk corresponding spring elements, in particular corrugated springs arranged. As a result, the correspondingly stratified disk pack is fanned out or has a corresponding axial length during pre-assembly. This has the consequence that the outermost inner or outer plate in the entry area or in the insertion opening of the respective inner and outer plate carrier, in particular not exactly inserted in the respective axial groove when the drive plate and / or other components of the clutch mounted become. As a result of the unstressed height of the disk set and a short axial formation of the respective disk carrier with its active tooth length (based on the respective axial grooves), it can therefore come to major assembly times in particular, to corresponding rework or at a correspondingly high cost.

The problem described above occurs especially in couplings, which are designed as so-called "K0 couplings" for the hybrid drive of a motor vehicle. In these so-called "K0 couplings", the inner disk carrier can not be extended axially and the stop for the disk pack is realized only during assembly of the motor vehicle transmission itself. In particular, it then comes to the fanning of the disk set in the preassembled state, so that a simple installation of the disk set during pre-assembly is not guaranteed here.

The coupling known in the prior art, in particular friction clutches with the so-called "positively separated plate systems / disk packs" are therefore not optimally configured for pre-assembly or corresponding assembly.

The invention is therefore based on the object, the above-mentioned coupling, of which the invention proceeds to design and further develop that the assembly costs, especially in the pre-assembly of the components of the clutch, in particular during assembly of the disk set is reduced and necessary rework omitted In particular, therefore, the installation costs are reduced accordingly.

The aforementioned object is now solved by the features of claim 1.

The support element is, in particular a plurality of support elements are now provided for the axial support of the disk set in the preassembled state of the coupling. Here, the support element or the support elements are designed and / or arranged so that in the preassembled state of the coupling, the support element with an outer inner plate or an outer outer plate for supporting the disk set in contact, but at a pressurization of the disk set in normal operation Clutch the support element with the outer inner plate or the outer outer plate is out of contact. In other words, in the preassembled state of the clutch, the inner and outer disks are inserted into the inner and outer disk carrier or realized the disk set accordingly, with the aid of the support member axial support of the disk set is realized in the preassembled state of the clutch and the disk set is secured accordingly, in particular secured so that all inner and outer plates are fully inserted into the respective axial grooves of the inner and outer plate carrier and axially supported in this position and then secured. An outer inner or outer outer plate can then no longer "slip out" of the respective axial groove when the plate pack, in particular by the provided between the outer plates designed as corrugated springs spring elements is fanned out. The pre-assembly is considerably easier, in particular corresponding installation costs are reduced accordingly.

Preferably, a plurality of support elements are provided or formed. The support element or the support elements are arranged and / or formed at a certain position essentially in the entry region of the inner disk carrier or in the entry region of the outer disk carrier. The entry area / insertion area means the front area of the respective inner and outer disk carrier, where the inner and outer disks are first inserted into the respective axial grooves. Thus, a corresponding fanning of the disk set is limited by the formed in particular as corrugated springs spring elements substantially on the axial length of the inner and outer disk carrier, so that even an outer inner or outer disk is still inserted and secured accordingly in the axial groove and secured there ,

The support member may be formed in particular as a securing ring, wherein the securing ring is at least partially arranged in a provided on the inner or on the outer disk carrier groove, in particular an annular groove or here partially engages.

The securing ring can be introduced, for example, as a corresponding snap ring in the groove, in particular in the annular groove.

It is also conceivable that the support element or the support elements as the respective integral component of the inner and the outer disk carrier is or are formed, this is dependent on the respective specific embodiment of the clutch or the respective inner and outer disk carrier.

Thus, the support element may be formed as a detent having a corresponding contact surface for contact or for supporting an outer inner or outer plate. Such locking lugs can be formed as integral components in the manufacturing process of the respective inner and outer disk carrier. It is also conceivable that the support element is designed as a latching step, which are formed in particular as integral components on the respective inner and outer plate carrier.

Finally, it is conceivable that a respective support element is provided both on the inner disk carrier and on the outer disk carrier, that is to say not only on one of the two disk carriers.

In particular, a plurality of support elements are provided along the circumference of the inner and / or the outer disk carrier in order to realize a corresponding axial support of the disk pack along the circumference.

In particular, the clutch is designed as a friction clutch, in particular as so-called "K0 clutch" for a hybrid drive module of a motor vehicle. In particular, in this application / execution, the then finally to be mounted clutch, so the final mounted "K0 clutch" realized with the assembly of the respective motor vehicle transmission. Thus, in particular for this last-mentioned case, it is crucial to prevent a fanning of the disk set beyond a certain position (during pre-assembly), as already described above.

As a result, existing in the prior art disadvantages are avoided and achieved corresponding advantages by the coupling according to the invention.

There are now a variety of ways to design the coupling according to the invention in an advantageous manner and further. Here, reference may first be made to the claims subordinate to claim 1. In the following, several preferred embodiments of the invention with reference to the drawings and the associated description may be explained in more detail. In the drawing shows:

1 a schematic representation of the inner and outer disk carrier of a coupling with the positioning of a supporting element in a first and in a second position,

2a . 3a in a schematic representation of a locking ring designed as a support element arranged on an outer disk carrier (see. 2a ) or on an inner disk carrier (see. 3a )

2 B . 3b a trained as a latching support member in a schematic representation, formed on an outer disc carrier (see. 2 B ) or on an inner disk carrier (see. 3b ), such as

2c . 3c in a schematic representation of a trained as latching support element on an outer disc carrier (see. 2c ) or on an inner disk carrier (see. 3c ).

The 1 to 3 show - at least partially - a clutch 1 for a motor vehicle not shown in detail. The 2a . 3a . 2 B . 3b . 2c . 3c only show partial sections of a coupling 1 ,

The coupling shown here 1 is in particular designed as a friction clutch or as a first or second clutch in a dual clutch can be used or used.

The coupling 1 has at least one inner disk carrier 2 and at least one outer disc carrier 3 on. On the inner disk carrier 2 are inner plates 2a and on the outer disc carrier 3 outdoor lambing 3a can be arranged or arranged. The inner and outer disks 2a and 3a be from the entrance area or from the insertion side, as shown here by the arrow A, in unspecified respective axial grooves of the inner and outer disk carrier 2 and 3 inserted. For this purpose, the inner and outer plates 2a and 3a appropriate teeth on.

By the in particular alternately layered inner and outer plates 2a and 3a becomes a disk pack 4 formed or formed. In the area of the disk pack 4 is at least one spring element 5 , here are in particular several spring elements 5 intended. The spring elements provided here 5 are in particular designed as corrugated springs and in the area of the disk pack 4 between the outer plates 3a arranged. Due to the spring force of the spring elements 5 becomes the disk pack 4 fanned out, especially here the outer plates 3a each spread apart or pressed apart.

In normal operation of the clutch 1 becomes the disk pack 4 , in particular by at least a not shown here in detail actuating piston (or by another spring element) against the spring force of the spring elements 5 pressurized. As a result, the inner and outer plates come 2a and 3a with each other in corresponding frictional or pressure contact, so that a torque is effective from the inner to the outer disk carrier 2 . 3 (or vice versa 3 . 2 ) is transferable. For axial support of the disk pack 4 is a support element 6 intended. The support element 6 can be performed in a specific manner in various embodiments, which will now be explained in detail below.

The disadvantages mentioned above are now initially avoided by the fact that the support element 6 for the axial support of the disk pack 4 in the preassembled state of the coupling 1 is provided, wherein the support element 6 is formed and / or arranged so that in the preassembled state of the coupling 1 the support element 6 with an outer inner lamella 2 B or an outer outer fin 3b for supporting the disk pack 4 is in contact, but at a pressurization of the disk set 4 in normal operation of the clutch 1 the support element 6 with the outer inner lamella 2 B or the outer outer fin 3b out of contact. In other words, in the preassembled state of the clutch 1 if the disc pack 4 is preassembled or is, supports the support element 6 in the axial direction, the disk set 4 in which the support element 6 either with the outer inner plate 2 B or the outer outer fin 3b directly in contact or with the help of the support element 6 then the disk pack 4 corresponding in the area between inner and outer plate carrier 2 and 3 is clamped axially, in particular between a support element 7 and the support element 6 , as this particular from the 1 is apparent.

1 initially shows two different possible positions for the support element 6 , It is obvious that here is the disk pack 4 (with the inner and outer plates 2a and 3a and with the between the outer plates 3a arranged spring elements 5 ) between the support element 7 and the respective support element 6 "Trapped" or with the help of the support element 6 is secured accordingly in the preassembled state. In the 1 illustrated first positioning I for the support element 6 is here in the area, especially in the entrance area of the outer disk carrier 3 and the second, here in 1 illustrated positioning II is in the entrance area of the inner disk carrier 2 , At the first positioning I of the support element 6 supports the support element 6 the outer outer lamella 3b and at the second positioning II the outer inner lamella 2 B correspondingly axially.

How out 1 it can be seen, is the supporting element shown here in each case 6 especially as a circlip 6a educated. 1 So shows the pre-assembled state of the clutch 1 , In particular, arranged in the preassembled state or on the support elements 6 secured disc pack 4 between the inner and outer plate carrier 2 and 3 or between the support element 7 and the respective support element 6 respectively. 6a ,

Like from the 1 is further apparent therefore is the disk set 4 from right to left, ie the inner and outer plates 2 and 3 from right to left in the respective unspecified axial grooves of the inner and outer disk carrier 2 and 3 inserted, at least the inner outer plate 3a against the support element 7 , here in particular with the outer disk carrier 3 is rotatably connected, is pressed. It then becomes the last outer inner lamella 2 B or outer outer plate 3b through the respective support element 6a like this from the respective positioning I and II out 1 can be seen supported by the fact that the respective support element 6 or here the circlip 6a with a contact surface against the outer outer plate 3b or outer inner plate 2 B suppressed. This is the support element 6 or the circlip 6a in a case on the inner disk carrier 2 or on the outer disk carrier 3 provided groove 8th , in particular an annular groove 8a or a partially executed annular groove, at least partially arranged or arranged here. In other words, the support element 6 or the circlip 6a engages with a partial area in the corresponding groove 8th or in the annular groove 8a one.

That's how it shows 2a one in a groove 8th or in an annular groove 8a arranged supporting element 6 , here's a circlip 6a trained support element 6 in the area of an outer disk carrier 3 is arranged, wherein a contact surface of the retaining ring 6a with the outer outer plate 3b in the preassembled state of the coupling 1 or in the preassembled state of the disk pack 4 is in contact.

The same applies to the 3a where, however, as a circlip 6a trained support element 6 on the inner disk carrier 2 in a groove 8th or in an annular groove 8a is arranged and in the preassembled state of the disk pack 4 Here is a contact surface of the support element 6 or of the circlip 6a with the outer inner lamella 2 B is in contact.

It is also conceivable that the support element 6 in particular as an integral part of the inner disk carrier 2 or the outer disk carrier 3 is formed, the latter possibility is especially in the 2 B . 3b respectively. 2c and 3c shown.

So show the 2 B and 3b a support element 6 as a catch 6b is trained. The catch 6b in 2 B is on the outer disk carrier 3 and the catch 6b in 3b on the inner disk carrier 2 formed, as shown schematically in the respective figures. In particular, here can the locking lugs 6b as integral components of the inner and outer disk carrier 2 and 3 be formed, in particular easily be made by punching. In particular, the locking lugs 6b here also designed to be resilient, so that the inner and outer plates 2a and 3a or the disk pack 4 good in the entrance area of the inner and outer plate carrier 2 and 3 can be inserted and the last outer inner plate 2 B (see. 3b ) or the outer outer plate 3b (see. 2 B ) well behind the corresponding contact surface of the respective latch 6b then can engage and with the respective contact surface of the latch 6b then in pre-assembled state in contact.

Finally, the show 2c and 3c as a rest stop 6c trained support element 6 , 2c shows one on the outer disk carrier 3 trained detent step 6c and the 3c one on the inner disk carrier 2 trained detent step 6c , Also these Raststufen 6c can in particular as integral components in the respective manufacturing process of the respective inner and outer disk carrier 2 and 3 easy to be made. After inserting the inner and outer plates 2a and 3a snap the inner and outer plates 2a and 3a behind the respective resting steps 6c accordingly, so that an unspecified contact surface of the latching step 6c with the outer outer plate 3b (see. 2c ) or with the outer inner plate 2 B (see. 3c ) then in the preassembled state of the clutch 1 or in the preassembled state of the disk pack 4 then in contact.

During operation, ie in normal operation of the clutch 1 if the disc pack 4 is pressurized accordingly and the disk set 4 is compressed, come the respective contact surfaces of the support elements 6 (Locking ring 6a , Catch 6b , Rast rest 6c ) out of contact with the respective outer inner plate 2 B or outer outer plate 3b ,

In particular, the disk pack 4 either over on the inner disk carrier 2 or on the outer disk carrier 3 arranged support elements 6 axially supported or preassembled. It is also conceivable that both on the inner disk carrier 2 as well as on the outer disk carrier 3 corresponding support elements 6 are provided. This is dependent on the respective specific embodiment of the respective clutch 1 ,

In any case, preferably along the circumference of an inner disk carrier 2 or along the circumference of an outer disk carrier 3 several support elements 6 provided to a good pre-assembly and a good pressure / force distribution on the vorzumontierende plate pack 4 to realize. The support elements 6 can then be arranged or formed in the root circle or in the tip circle of the teeth of the respective disc carrier.

In particular, the clutch 1 designed as a friction clutch and can be used in different types of motor vehicle transmissions and also in brake systems.

In particular, the here in the 1 to 3 illustrated coupling 1 but designed as a so-called "K0 clutch" and designed for a hybrid drive module of a motor vehicle, not shown. In particular, for this latter case is an axial length of an inner disk carrier 2 not readily extendable, so that the advantages of the described pre-assembly for this case are particularly useful.

LIST OF REFERENCE NUMBERS

1

clutch

2

Inner disk carrier

2a

inner disk

2 B

outer inner lamella

3

External disk carrier

3a

outer disk

3b

outer outer plate

4

disk pack

5

spring element

6

supporting

6a

circlip

6b

locking lug

6c

catching step

7

support element

8th

groove

8a

ring groove

A

arrow

I

first positioning

II

second positioning

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 102005007384 A1 [0003]
• DE 102007042810 A1 [0003]
• DE 102010044379 A1 [0005]

Claims (10)

Clutch ( 1 ) for a motor vehicle, in particular double clutch, with at least one inner disk carrier ( 2 ) and at least one outer disc carrier ( 3 ), wherein on the inner disk carrier ( 2 ) Inner lamellae ( 2a ) and on the outer disk carrier ( 3 ) Outer plates ( 3a ) can be arranged and / or arranged, wherein by appropriately stratified inner and outer plates ( 2a . 3a ) a disc pack ( 4 ) is formed and / or can be formed, wherein in the region of the disk pack ( 4 ) at least one spring element ( 5 ), in particular a plurality of spring elements ( 5 ) for at least partially fanning the disk set ( 4 ) is or are provided, wherein the disk pack ( 4 ), in particular by at least one actuating piston, in normal operation of the clutch ( 1 ) against the spring force of the spring element ( 5 ) or the spring elements ( 5 ) is pressurizable, and wherein for the axial support of the disk pack ( 4 ) at least one support element ( 6 ) is provided, characterized in that the supporting element ( 6 ) for the axial support of the disk pack ( 4 ) in the preassembled state of the coupling ( 1 ) is provided, wherein the support element ( 6 ) is designed and / or arranged such that in the preassembled state of the coupling ( 1 ) the supporting element ( 6 ) with an outer inner plate ( 2 B ) or an outer outer plate ( 3b ) for supporting the disk pack ( 4 ) is in contact, but when a pressurization of the disk set ( 4 ) in normal operation of the clutch ( 1 ) the supporting element ( 6 ) with the outer inner plate ( 2 B ) or the outer outer plate ( 3b ) is out of contact. Coupling according to claim 1, characterized in that the supporting element ( 6 ) at a certain position substantially in the entrance area of the inner disk carrier ( 2 ) or the outer disk carrier ( 3 ) is arranged and / or formed. Coupling according to claim 1 or 2, characterized in that the supporting element ( 6 ) as a retaining ring ( 6a ) is trained. Coupling according to claim 3, characterized in that the retaining ring ( 6a ) in a purpose on the inner disk carrier ( 2 ) or on the outer disk carrier ( 3 ) groove ( 8th ) is at least partially arranged or arranged. Coupling according to claim 1 or 2, characterized in that the supporting element ( 6 ) as an integral part of the inner disk carrier ( 2 ) or the outer disk carrier ( 3 ) is trained. Coupling according to claim 5, characterized in that the supporting element ( 6 ) as a detent ( 6b ) is trained. Coupling according to claim 5, characterized in that the supporting element ( 6 ) as a latching step ( 6c ) is trained. Coupling according to one of the preceding claims, characterized in that in each case a supporting element ( 6 ) on the inner disk carrier ( 2 ) and on the outer disk carrier ( 3 ) is provided. Coupling according to one of the preceding claims, characterized in that a plurality of supporting elements ( 6 ) along the circumference of the inner and / or the outer disk carrier ( 2 . 3 ) are provided. Coupling according to one of the preceding claims, characterized in that the coupling is designed as a friction clutch, in particular as K0 clutch for a hybrid drive module of a motor vehicle.

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