DE102015215600A1 - Cover arrangement for a friction clutch - Google Patents

Abstract

The invention relates to a cover assembly for a friction clutch for coupling a drive shaft of a motor vehicle engine with at least one transmission input shaft of a motor vehicle transmission, with a clutch cover for at least partially covering the friction clutch, an actuating element, in particular lever spring, for displacing a pressure plate for frictional pressing a clutch disc between the pressure plate and a centering pin for positioning the actuating element in a circumferential direction, wherein the centering pin has a centering sleeve contacting the actuating element and a Zentrierniet passing through the centering sleeve for the positive connection of the centering sleeve with the clutch cover, wherein the centering sleeve on a from the clutch cover facing away axial side projecting in a radial direction support collar and the Zentrierniet has a setting head and a connected via a rivet bolt with the setting head closing head, wherein the closing head forms a first positive connection of the centering sleeve with the clutch cover, wherein between the setting head and the support collar at least one additional component is arranged.

Description

The invention relates to a cover assembly for a friction clutch, with the aid of a friction clutch for coupling a drive shaft of an automotive engine with at least one transmission input shaft of a motor vehicle transmission can be opened and / or closed.

From the DE 10 2014 212 165 A1 is a cover assembly for a friction clutch for coupling a drive shaft of an automotive engine with at least one transmission input shaft of a motor vehicle transmission known. The cover assembly comprises a clutch cover for at least partially covering the friction clutch, an actuating element, in particular a lever spring / plate spring, for displacing a pressure plate for frictionally pressing a clutch disc between the pressure plate and a counter plate, and a centering bolt connected to the clutch cover for positioning the actuating element in the circumferential direction in which the centering pin has a centering sleeve contacting the actuating element and a centering rivet passing through the centering sleeve for the positive connection of the centering sleeve to the clutch cover, wherein the centering sleeve has an outwardly projecting support collar on an axial side pointing away from the clutch cover and the centering rivet has a setting head and a connected via a rivet bolt with the setting head closing head, wherein the setting head or the closing head de the support collar de r centering sleeve contacted.

There is a constant need to mount friction clutches easily and inexpensively.

On this basis, the present invention has the object, at least partially overcome the known from the prior art disadvantages and in particular to show measures that allow a simple and cost-effective installation of a friction clutch.

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 with one another in any technologically meaningful manner and can be supplemented by explanatory facts from the description and details from the figures, wherein further embodiments of the invention are shown.

The invention relates to a cover assembly for a friction clutch for coupling a drive shaft of a motor vehicle engine with at least one transmission input shaft of a motor vehicle transmission, with a clutch cover for at least partially covering the friction clutch, an actuating element, in particular a lever spring / disc spring, for displacing a pressure plate for frictional pressing a clutch disc between the pressure plate and a counter plate, and at least one associated with the clutch cover centering pin for positioning the actuating element in a circumferential direction, wherein the centering pin contacting the actuating element centering sleeve and extending through the centering Zentrierniet for positive connection of the centering sleeve with the clutch cover, wherein the Centering sleeve on one of the clutch cover facing away axial side projecting in a radial direction n supporting collar and the Zentrierniet has a setting head and a connected via a rivet bolt with the setting head closing head, wherein the closing head forms a first positive connection of the centering sleeve with the clutch cover, wherein between the setting head and the support collar at least one additional component is arranged.

To produce a riveted joint openings / holes must be introduced into the components to be connected, which have a slightly larger diameter than the rivet bolt. Through these components, the rivet bolt of Zentrierniets is pushed through so that it protrudes beyond. Subsequently, the protruding end of the rivet bolt z. B. formed by machining with a hammer to a head (the so-called closing head), which connects the components safely. The head of the rivet opposite part of the rivet is called setting head, the part between rivet bolts.

Due to the at least two-part division of the centering pin in a centering sleeve and a Zentrierniet a one-piece design of the centering pin can be avoided with a correspondingly complicated ausgestaltenden geometry. For example, a standardized standard component can be used for the centering rivet, while the design of the centering bolt provided for a suitable interaction with the actuating element designed in particular as a plate spring can be achieved exclusively by the centering sleeve. In particular, it is possible for different types of construction of a friction clutch, for example, the positioning of the actuating element are provided at different axial distances to the clutch cover, suitable to use different centering sleeves but substantially identical Zentrierniete. The centering sleeve can be placed between a setting head or closing head of the Zentrierniets on the one hand and the clutch cover on the other hand, in particular be pressed substantially free of play, which results in the centering sleeve the intended relative position to the clutch cover in the production of a riveted joint with the clutch cover by plastic deformation of the rivet of the Zentrierniets substantially automatically. The support collar can in this case take up at least part of the holding forces occurring in the riveted state of the centering pin and ablate the rest of the sleeve to the clutch cover, so that a correspondingly simpler and less expensive configuration can be provided for the Zentrierniet, thereby enabling a simple and cost-effective installation of the friction clutch is.

Furthermore, at least one further component can now be arranged (and possibly clamped) between the already formed setting head of the centering rivet and the supporting collar. Here can z. B. an adapter plate and / or a spring ring insert are attached to which a cover-fixed release can support. In particular, so the assembly of the friction clutch can be simplified, since the at least one further component can now be connected via at least one centering bolt with the clutch cover. The at least one further component can be such. B. are arranged in the context of a pre-assembly together with at least one centering pin and centering on the clutch cover and connected via the formation of the closing head by a first positive connection with the clutch cover.

Alternatively centering sleeve and the at least one further component can be arranged in front of the first opening of the clutch cover, wherein only then the Zentrierniet is pushed into the centering sleeve and through the first opening. The training of the closing head is done afterwards.

The actuating element may in particular be configured as a plate spring, wherein the actuating element may in particular have a plate spring ring projecting from the radially inward spring tongues, via which an actuating force for displacing the pressure plate of the friction clutch can be initiated by a particular hydraulic actuating system. The centering bolt is guided in particular by a space formed between two circumferentially subsequent spring tongues intermediate space, so that the actuating element positioned in the circumferential direction and in particular with respect to a rotational axis of the friction clutch and in particular with the counter-plate of the friction clutch rotatably connected cover assembly is coaxially centered. Preferably, a plurality, in particular at least three, centering bolts are provided, which are evenly distributed in particular in the circumferential direction and / or are positioned on a common radius to the axis of rotation. The actuating element can rest, in particular, with a rim pointing radially inward with respect to the axis of rotation on a surface of the centering sleeve that points radially outwardly relative to the axis of rotation. The actuating element can be designed to be relatively movable relative to the centering sleeve, in particular in the axial direction, so that a pivot point which is substantially linear in the circumferential direction can be provided for the actuating element radially spaced from the centering pin. For example, the actuating element between two pivotal point-forming components is pivotally mounted, in particular one or both components, for example, a circumferentially closed tilting ring, may be centered by the centering pin.

In particular, a resilient in the axial direction of the support spring to form a pivot point for the actuating element or a rigid in the axial direction tilting ring to form a pivot point for the actuating element is supported on an axial side facing the clutch cover of the support collar. The actuating element can thereby be pivotally mounted. By resting on the support collar support spring, a relative movement in the axial direction relative to the centering pin can be allowed during pivoting of the actuating element, in which case by the support spring from the support spring applied to the actuator spring force can change. As a result, a profile of a release force required for displacing the pressure plate can be influenced via the stroke of the pressure plate, in particular in order to reduce peaks of the required disengagement force.

Preferably, a resilient in the axial direction of the support spring to form a pivot point for the actuating element or a rigid in the axial direction Kippring to form a pivot point for the actuating element is supported on an axial side facing the support collar of the clutch cover. The actuating element can thereby be pivotally mounted. By resting on the clutch cover supporting spring, a relative movement in the axial direction relative to the centering pin can be allowed during pivoting of the actuating element, in which case by the support spring from the support spring applied to the actuator spring force can change. As a result, a profile of a release force required for displacing the pressure plate can be influenced via the stroke of the pressure plate, in particular in order to reduce peaks of the required disengagement force.

In particular, the additional component is a spring ring insert and / or an adapter plate for storage / support of a cover-resistant release.

The additional component preferably connects at least a plurality of centering bolts with one another, in particular all centering bolts provided in the friction clutch.

In particular, the additional component has at least one second opening, through which the rivet bolt extends, wherein the component is connected by the setting head and the support collar via a second positive connection with the centering bolt.

Form-fitting connections are created by the interaction of at least two connection partners. As a result, the connection partners can not solve without or with interrupted power transmission. In other words, in the case of a positive connection, one connection partner gets in the way of the other.

The invention further relates to a friction clutch for coupling a drive shaft of a motor vehicle engine with at least one transmission input shaft of a motor vehicle transmission with a counter plate, a pressure plate for frictionally pressing a clutch disc between the pressure plate and the counter plate and a lid assembly, which can be trained and developed as described above, for moving the pressure plate. The support collar of the centering of the centering of the cover assembly can hereby absorb at least a portion of the holding forces occurring in the riveted state of the centering pin and ablate the rest of the sleeve to the clutch cover.

In particular, the friction clutch has an adjusting device for the automatic compensation of wear. In this context is also on the DE 10 2014 212 165 A1 which is hereby fully incorporated by reference.

It is further proposed a method for assembling a friction clutch according to the invention, wherein only the closing head of Zentrierniets is deformed to form a positive connection. The second positive connection between the at least one further component and the centering pin (between support collar and setting head) is not formed by a deformation of the rivet bolt. Here, the setting head is already finished before the assembly of the friction clutch.

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 FIG. 2 is a sectional view of a friction clutch according to the prior art; FIG.

2 a friction clutch with a releaser in a side view in section;

3 a centering pin according to the prior art in a side view in section;

4 : a centering pin in a side view in section;

5 a friction clutch in a side view in section;

6 : a centering pin with centering sleeve in a side view in section without closing head;

7 : a centering pin with centering sleeve in a side view in section with closing head;

8th a first assembly order of a centering pin; and

9 a second order of assembly of a centering bolt.

1 shows a friction clutch 2 according to DE 10 2014 212 165 A1 in a side view in section. From this document is a cover assembly 1 for a friction clutch 2 for coupling a drive shaft of a motor vehicle engine with at least one transmission input shaft of a motor vehicle transmission (not shown). The lid arrangement 1 includes a clutch cover 3 for at least partially covering the friction clutch 2 , an actuator 4 , in particular a lever spring / plate spring, for displacing a pressure plate 5 for the frictional compression of a clutch disc 6 between the pressure plate 5 and a counter-plate 7 , and one with the clutch cover 3 connected centering bolts 8th for positioning the actuating element 4 in the circumferential direction 9 , wherein the centering bolt 8th a the actuator 4 contacting centering sleeve 10 and one through the centering sleeve 10 passing through Zentrierniet 11 for the positive connection of the centering sleeve 10 with the clutch cover 3 having, wherein the centering sleeve 10 at one of the clutch cover 3 one way away axial side radially outwardly projecting support collar 14 and the Zentrierniet 11 a setting head 15 and one over a rivet bolt 16 with the setting head 15 connected closing head 18 having, wherein the setting head 15 the support collar 14 the centering sleeve 10 contacted. Again, the friction clutch 2 an adjustment device 26 to compensate for the wear of the clutch linings. The actuator 4 is designed here as a diaphragm spring, wherein the actuating element 4 a cup spring body 30 has, from the radially inward spring tongues 29 protrude, over which of a particular hydraulic actuating system, an actuating force for displacing the pressure plate 5 the friction clutch 2 is initiated. The centering bolt is through one between two in the circumferential direction 9 subsequent spring tongues 29 trained gap, so that the actuator 4 in the circumferential direction 9 positioned and related to a rotation axis 31 the friction clutch 2 and that, with the counter plate 7 the friction clutch 2 rotatably connected lid assembly 1 coaxially centered. Here are several, in particular at least three, centering bolts 8th provided in the circumferential direction 9 evenly distributed and / or on a common radius to the axis of rotation 31 are positioned. The actuator 4 lies with a relative to the axis of rotation 31 radially inwardly facing edge on a relative to the axis of rotation 31 radially outwardly facing surface of the centering sleeve 10 on. The actuator 4 is in the axial direction 33 relatively movable to the centering sleeve 10 designed so that one in the circumferential direction 9 substantially linear pivot point for the actuator 4 radially spaced from the centering pin 8th is provided. Here is the actuator 4 between two components forming the pivot point, a tilting ring 17 and a support spring 27 , pivotally mounted, in particular one or both components of the centering pin 8th can be centered.

2 shows a friction clutch 2 with a release button 23 in a side view in section. It is based on the description of the friction clutch 2 in 1 Referenced. Here, however, is also the releaser 23 shown with the spring tongues 29 of the actuating element 4 interacts. The releaser 23 is arranged cover-solid, ie it rests on the clutch cover 3 from. Here is the releaser 23 in the axial direction 33 about a camp 32 on the as spring ring insert 21 trained component 20 from. The component 20 is above the centering bolt 8th on the clutch cover 3 attached.

3 shows a centering bolt 8th according to the prior art in a side view in section. The centering bolt 8th has a centering sleeve 10 and one through the centering sleeve 10 passing through Zentrierniet 11 on, with the centering sleeve 10 at one of the clutch cover 3 pointing away axial side projecting radially outward support collar 14 and the Zentrierniet 11 a setting head 15 and one over a rivet bolt 16 with the setting head 15 connected closing head 18 having, wherein the setting head 15 the support collar 14 the centering sleeve 10 contacted. The rivet bolt 16 extends through the first opening 24 in the clutch cover 3 , The training of the closing head 18 generates a first positive connection between centering pins 8th and clutch cover 3 ,

4 shows a centering bolt 8th in a side view in section, wherein the centering sleeve 10 at one of the clutch cover 3 pointing away axial side 12 one in a radial direction 13 projecting support collar 14 and the Zentrierniet 11 a setting head 15 and one over a rivet bolt 16 with the setting head 15 connected closing head 18 having, wherein the closing head 18 a first positive connection 19 the centering sleeve 10 with the clutch cover 3 forms, wherein between setting head 15 and the support collar 14 an additional component 20 is arranged. The component 20 is so through the set head 15 and the support collar 14 via a second positive connection 25 with the centering bolt 8th connected is.

5 shows a friction clutch 2 in a side view in section. It is based on the comments 1 and 2 Referenced. The component 20 is above the centering bolt 8th on the clutch cover 3 attached. The component 20 is through the setting head 15 and the support collar 14 via a second positive connection 25 with the centering bolt 8th connected and over the centering pin 8th to the clutch cover 3 tethered.

6 shows a centering bolt 8th with centering sleeve 10 in a side view in section without closing head 18 , The centering bolt 8th has a centering sleeve 10 and one through the centering sleeve 10 passing through Zentrierniet 11 on, with the centering sleeve 10 at one of the clutch cover 3 (not shown here) pointing away axial side 12 one in the radial direction 13 outwardly projecting support collar 14 and the Zentrierniet 11 a setting head 15 having. The rivet bolt 16 extends from the setting head 15 through the centering sleeve 10 ,

7 shows a centering bolt 8th with centering sleeve 10 in a side view in section with closing head 18 , Here was the rivet bolt 16 So transformed to form a closing head 18 ,

8th shows a first assembly sequence of a centering pin 8th , Here are centering sleeve 10 and the at least one further component 20 before the first opening 24 the clutch cover 3 arranged, only then the Zentrierniet 11 over the second opening 28 of the component 20 in the centering sleeve 10 and through the first opening 24 is pushed through. The training of the closing head 18 takes place afterwards.

9 shows a second mounting sequence of a centering pin 8th , The at least one further component 20 can so z. B. in the context of a pre-assembly together with at least one centering pin 9 with centering sleeve 10 on the clutch cover 3 arranged and about the formation of the closing head 18 by a first positive connection 19 with the clutch cover 3 get connected.

LIST OF REFERENCE NUMBERS

1

 lid assembly

2

 friction clutch

3

 clutch cover

4

 actuator

5

 pressure plate

6

 clutch disc

7

 counterplate

8th

 centering

9

 circumferentially

10

 centering

11

 Zentrierniet

12

 axial

13

 radial direction

14

 support collar

15

 setting head

16

 rivet bolts

17

 tilting ring

18

 closing head

19

 first positive connection

20

 component

21

 Spring ring insert

22

 adapter plate

23

 releaser

24

 First opening

25

 second positive connection

26

 readjustment

27

 support spring

28

 Second opening

29

 spring tongue

30

 Belleville spring body

31

 axis of rotation

32

 camp

33

 Axial direction

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 102014212165 A1 [0002, 0019, 0031]

Claims (7)

Cover arrangement ( 1 ) for a friction clutch ( 2 ) for coupling a drive shaft of a motor vehicle engine with at least one transmission input shaft of a motor vehicle transmission, with a clutch cover ( 3 ) for at least partially covering the friction clutch ( 2 ), an actuator ( 4 ), in particular lever spring, for displacing a pressure plate ( 5 ) for the frictional compression of a clutch disc ( 6 ) between the pressure plate ( 5 ) and a counter-plate ( 7 ), and at least one with the clutch cover ( 3 ) associated centering pins ( 8th ) for positioning the actuating element ( 4 ) in a circumferential direction ( 9 ), wherein the centering bolt ( 8th ) one the actuator ( 4 ) contacting centering sleeve ( 10 ) and one through the centering sleeve ( 10 ) centering rivet ( 11 ) for the positive connection of the centering sleeve ( 10 ) with the clutch cover ( 3 ), wherein the centering sleeve ( 10 ) on one of the clutch cover ( 3 ) pointing away axial side ( 12 ) one in a radial direction ( 13 ) projecting support collar ( 14 ) and the Zentrierniet ( 11 ) a setting head ( 15 ) and one via a rivet bolt ( 16 ) with the setting head ( 15 ) associated closing head ( 18 ), wherein the closing head ( 18 ) a first positive connection ( 19 ) of the centering sleeve ( 10 ) with the clutch cover ( 3 ), wherein between setting head ( 15 ) and the support collar ( 14 ) at least one additional component ( 20 ) is arranged. Cover arrangement ( 1 ) according to claim 1, wherein the additional component ( 20 ) a spring ring insert ( 21 ) or an adapter plate ( 22 ) for the storage of a lid-tight release ( 23 ). Cover arrangement ( 1 ) according to one of the preceding claims, wherein the additional component ( 20 ) at least a plurality of centering pins ( 8th ) connects to each other. Cover arrangement ( 1 ) according to one of the preceding claims, wherein the additional component ( 20 ) at least one second opening ( 28 ), through which the rivet bolt ( 16 ), wherein the component ( 20 ) through the setting head ( 15 ) and the support collar ( 14 ) via a second positive connection ( 25 ) with the centering bolt ( 8th ) connected is. Friction clutch ( 2 ) for coupling a drive shaft of a motor vehicle engine with at least one transmission input shaft of a motor vehicle transmission with a counter plate ( 7 ), a pressure plate ( 5 ) for the frictional compression of a clutch disc ( 6 ) between the pressure plate ( 6 ) and the counter plate ( 7 ) and a lid assembly ( 1 ) according to one of claims 1 to 4 for displacing the pressure plate ( 5 ). Friction clutch ( 2 ) according to claim 5, wherein the friction clutch ( 2 ) an adjusting device ( 26 ) for automatic compensation of wear. Method for assembling a friction clutch according to one of Claims 5 and 6, in which only the closing head ( 18 ) of the centering rivet ( 11 ) is deformed to form a positive connection.

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