DE102017114690A1 - Clutch cover assembly for a friction clutch - Google Patents

Abstract

It is a clutch cover assembly (56) for a friction clutch (14) for coupling a drive shaft of a motor vehicle engine with at least one transmission input shaft of a motor vehicle transmission provided with a clutch cover (34) for at least partially covering the friction clutch (14) and an actuating element (46) designed as a plate spring. for axially displacing a pressure plate (26) of the friction clutch (14) relative to a counter plate (28) of the friction clutch (14), wherein the clutch cover (34) engageable on the actuating element (46) in the circumferential direction pivot point (47) for pivoting the Actuator (46) and a central opening (52) for actuating the actuating element (46) through the clutch cover (34) therethrough, wherein an inner edge region (54) of the central opening (52) to the actuating element (46) is executed cranked out, wherein an axial Distance between the pivot point (47) and a Be actuating element (46) facing stop surface (56) of the inner edge region (54) and a radial axial distance between the pivot point (47) and an actuating element (46) facing stop surface (56) of the inner edge region (54) is selected setting up the designed as a plate spring Actuator (46) to block. By designed as a transport lock integral with the clutch cover (34) configured cranked inner edge region (54), the number of components can be reduced, so that a cost-friction clutch (14) is possible.

Description

The invention relates to a clutch cover assembly for a friction clutch, with the aid of a friction clutch can be actuated.

Out DE 10 2013 201 697 A1 is a double clutch with a clutch cover assembly for a friction clutch, in which a designed as a plate spring actuator for axial displacement of a pressure plate of the friction clutch is centered on connected to a transmission-side clutch cover centering. With the centering pin a transport lock is connected as a separate component. The transport lock is designed as a spring which penetrates the actuating element and is hooked on the side facing away from the clutch cover side with the actuating element. By biasing the pressure plate by means of a return spring and / or an adjusting spring of an adjusting the entangled with the actuating element transport lock is held in position, so that a Nachstellereignis can be avoided by the adjustment before mounting. After assembly, when a clutch disc between a counter-plate of the friction clutch and the pressure plate is positioned and too strong adjustment of the pressure plate can be prevented by the clutch disc itself, the transport lock can be solved. For this purpose, the friction clutch is brought into the closed position, in which the actuating element is positioned closer to the clutch cover and automatically lifts the transport lock from the actuating element. The transport lock can move due to their own bias in a position in which the transport lock can no longer block the regular operation of the friction clutch.

There is a constant need for a low-cost friction clutch.

It is the object of the invention to show measures that allow a cost-effective friction clutch.

The object is achieved by a clutch cover assembly having the features of claim 1. Preferred embodiments of the invention are set forth in the dependent claims and the description below, each of which individually or in combination may constitute an aspect of the invention.

It is a clutch 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 provided with a clutch cover for at least partially covering the friction clutch and configured as a plate spring actuator for axially displacing a pressure plate of the friction clutch relative to a counter plate of the friction clutch the clutch cover has an engageable on the actuating element in the circumferential direction pivot point for pivoting the actuating element and a central opening for actuation of the actuating element through the clutch cover through, wherein an inner edge region of the central opening is carried out cranked towards the actuating element, wherein an axial distance between the pivot point and a to Actuator facing stop surface of the inner edge region and a radial axial distance zw Is selected the pivot point and pointing to the actuating element stop surface of the inner edge region is a setting up of the designed as a plate spring actuator to block.

The actuator can, in particular with bias, for example, in a maximum open position abut the axially protruding from the rest of the clutch cover inner edge region, so that a complete release of the actuator of the clutch cover assembly during transport from the acting as a transport securing cranked inner edge region can be blocked. For this purpose, the relative position of the actuating element facing stop surface of the inner edge region is positioned relative to the pivot point of the actuating element, that a complete setting up of the configured as a plate spring actuator is avoided and can remain in the actuating element a bias. By a sufficiently high bias of the voltage applied to the inner edge region actuating element rattling noises and / or damage in case of sudden shocks during transport can be avoided. A lifting of the actuating element during transport from the clutch cover can be avoided. A suspension during transport can be achieved by the actuating element itself, without requiring a separate spring element of an additional transport lock is required. Instead, with the cranked inner edge region, the transport lock can be integrally integrated in the clutch cover. The number of construction is thereby kept low, whereby the manufacturing cost and / or the installation costs can be reduced. By designed as a transport lock integral with the clutch cover cranked inner edge region, the number of components can be reduced, so that a cost friction clutch is possible.

The clutch cover assembly can be installed as a separate assembly. Optionally, the clutch cover assembly may be preassembled in a friction clutch. By acting as a transport securing cranked inner edge region can be prevented that a wear adjustment of the friction clutch is triggered during transport of the clutch cover assembly, whereby a mounting of a clutch disc between the counter plate and one of the wear adjustment axially nachgeschetzte pressure plate could be thwarted.

In particular, a relative to the clutch cover of the actuator axially displaceable pressure plate for pressing a clutch disc between the pressure plate and a fixedly connected to the clutch cover counter plate is provided, wherein an attacking on the clutch cover and the pressure plate, designed in particular as a leaf spring, return spring for displacing the pressure plate is provided on the clutch cover too. The return spring can press on the pressure plate, the actuating element against the inner edge region of the clutch cover and thereby hold. The actuator can be pivoted about the pivot point of the clutch cover against the inner edge region of the clutch cover and pressed by the spring force of the return spring with a force against the inner edge region.

Preferably, in the maximum open state of the friction clutch, the actuating element is biased by biasing of the return spring between the pressure plate and the clutch cover. As a result, not only the return spring, but also the actuator can elastically damp the shock and prevent damage to the friction clutch in a shock.

Particularly preferably, the inner edge region is formed as circumferentially circumferentially closed collar. The inner edge region can be easily produced by embossing and / or deep drawing from a stamped blank for the clutch cover. This can be done in particular simultaneously with the three-dimensional shaping of the clutch cover by a non-cutting forming process. The manufacturing costs are kept low.

• 1: eine schematische Schnittansicht einer Doppelkupplung,
• 2: eine schematische perspektivische Ansicht eines Kupplungsdeckels der Doppelkupplung aus 1 und
• 3: eine schematische Schnittansicht des Kupplungsdeckels aus 2.

The invention will now be described by way of example with reference to the accompanying drawings with reference to preferred embodiments, wherein the features shown below, both individually and in combination may represent an aspect of the invention. Show it:

• 1 : a schematic sectional view of a double clutch,
• 2 : A schematic perspective view of a clutch cover of the double clutch 1 and
• 3 : A schematic sectional view of the clutch cover 2 ,

In the 1 illustrated double clutch 10 has a first friction clutch 12 and another second friction clutch 14 on. The first friction clutch 12 has a first pressure plate 16 on, which axially relative to a first counter-plate 18 can be displaced to a first clutch disk rotatably connected to a first transmission input shaft 20 between the first pressure plate 16 and the first counter plate 18 to be frictionally pressed. With the first pressure plate 16 and a driving ring 22 or a central plate 32 is designed as a leaf spring first return spring 24 connected, with the help of the first pressure plate 16 automatically a defined starting position can be shifted. The second friction clutch 14 has a second pressure plate 26 on, the axially relative to a second counter-plate 28 can be displaced to a second clutch disk rotatably connected to a second transmission input shaft 30 between the second pressure plate 26 and the second counter plate 28 to be frictionally pressed. In the illustrated embodiment, the first counter-plate 18 and the second counter plate 28 from the different axial sides of the common central plate 32 educated. With the second pressure plate 26 and the central plate 32 and / or a clutch cover 34 is designed as a leaf spring second return spring 36 connected, with the help of the second pressure plate 26 automatically a defined starting position can be shifted.

To the first pressure plate 16 to be able to shift axially engages a designed in the manner of a plate spring first actuator 38 at one with the first pressure plate 16 firmly connected tie rods 40 at. The first actuator 38 is for this purpose at a ring-shaped in the circumferential direction of the first pivot point 41 defining first expression 42 the clutch cover 34 pivoted. If on radially inwardly projecting first spring tongues 44 of the first actuating element 38 engages an operating force provided by an actuating system, the first actuating element 38 change its conicity and thereby at the first pivot point 41 the first expression 42 be pivoted, for example, to close the first friction clutch 12 the tie rod 40 and those with the tie rod 40 connected first pressure plate 16 on the first counter plate 18 the central plate 32 to relocate and while the first clutch disc 20 to be frictionally pressed. To the second pressure plate 26 to be able to shift axially engages a configured in the manner of a plate spring second actuator 46 on the second pressure plate 26 at. The second actuator 46 For this purpose, it is at an annular second pivot point in the circumferential direction 47 defining second expression 48 the clutch cover 34 pivotally mounted, in the opposite direction to the first expression 42 from the clutch cover 34 projects. If on radially inwardly projecting second spring tongues 50 of the second actuating element 46 engages an operating force provided by an actuating system, the second actuating element 46 change its conicity and thereby at the second pivot point 47 the second expression 48 be pivoted, for example, to close the second friction clutch 14 the second pressure plate 26 on the second counter plate 28 the central plate 32 to, shift while holding the second clutch disc 30 to be frictionally pressed.

The clutch cover 34 and the first actuating element 38 on the one hand and the clutch cover 34 and the second actuator 46 On the other hand, each can have a clutch cover assembly 58 for the first friction clutch 12 or for the second friction clutch 14 the double clutch 10 form, wherein for both friction clutches 12 . 14 a single clutch cover 34 is sufficient. The clutch cover 34 has a central opening 52 on, in the illustrated embodiment by a second actuator 46 bent back circumferentially closed inner edge region 54 is limited, as in 2 and 3 shown. The inner edge area 54 thereby forms a second actuator 46 pointing axial stop with a stop surface 56 from where the second actuator 46 in the maximum wide open position of the second friction clutch 14 may be present during transport before installation in a drive train of a motor vehicle. The second return spring 36 this can be the second pressure plate 26 on the clutch cover 34 to push and thereby the second actuator 46 against the stop surface 56 of the inner edge area 54 to press. The radial distance of the stop surface 56 to the second pivot point 47 and the axial distance of the stop surface 56 to the second pivot point 47 are chosen such that the second return spring 36 engages with a remaining spring force and a complete setting up of the second actuating element 46 is blocked, so that the second actuator 46 with a bias between the second pressure plate 26 and the stop surface 56 the axial stop of the cranked inner edge region 54 the clutch cover 34 is stuck and in case of impact during transport not from the stop surface 56 takes off.

LIST OF REFERENCE NUMBERS

10

Double coupling

12

first friction clutch

14

second friction clutch

16

first pressure plate

18

first counter plate

20

first clutch disc

22

driver ring

24

first return spring

26

second pressure plate

28

second counter plate

30

second clutch disc

32

Central plate

34

clutch cover

36

second return spring

38

first actuating element

40

tie rods

41

first pivot point

42

first expression

44

first spring tongue

46

second actuator

47

second pivot point

48

second expression

50

second spring tongues

52

center opening

54

Inner edge area

56

stop surface

58

Clutch cover assembly

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 102013201697 A1 [0002]

Claims (4)

Clutch cover assembly for a friction clutch (14) 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 (34) for at least partially covering the friction clutch (14) and an actuating element (46) designed as a disk spring for axially displacing a pressure plate (26) of the friction clutch (14) relative to a counter-plate (28) of the friction clutch (14), the clutch cover (34) having a circumferentially extending pivot (47) engageable with the actuator (46) for pivoting the actuator (46) and a central opening (52) for actuating the actuator (46) through the clutch cover (34); wherein an inner edge region (54) of the central opening (52) to the actuating element (46) is executed cranked out, wherein an axial distance between the pivot point (47) and an actuating element (46) facing stop surface (56) of the inner edge region (54) and a radial axial distance between the pivot point (47) and one of the actuating element (46) facing stop surface (56) of the inner edge region (54) is selected to set up the designed as a plate spring actuator (46) to block. Clutch cover arrangement according to Claim 1 characterized in that a relative to the clutch cover (34) of the actuating element (46) axially displaceable pressure plate (26) for pressing a clutch disc (30) between the pressure plate (26) and one with the clutch cover (34) fixedly connected counter-plate (28) is provided, wherein on the clutch cover (34) and on the pressure plate (26) designed, in particular designed as a leaf spring, return spring (36) for displacing the pressure plate (26) on the clutch cover (34) is provided. Clutch cover arrangement according to Claim 2 characterized in that in the maximum open state of the friction clutch (14), the actuating element (46) with bias of the return spring (36) between the pressure plate (26) and the clutch cover (34) is braced. Clutch cover assembly according to one of Claims 1 to 3 characterized in that the inner edge region (54) is formed as circumferentially circumferentially closed collar.

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