DE102009011249A1 - Connector for connecting central release bearing to coupling, uses elastic element that is arranged between outer ring of cap bearing and housing cover, where outer ring is firmly connected with disk that is provided with opening or recess - Google Patents

Abstract

The connector uses an elastic element (5) that is arranged between an outer ring (4a) of a cap bearing (4) and a housing cover (9). The cap bearing is provided in a central release bearing (1) that comprises a clutch release bearing (3). The outer ring is firmly connected with a disk (15) that is provided with an opening or recess, which are arranged over circumference of the disk, for receiving a connection element (16). The opening or recess of the disk is aligned with another opening or recess of the housing cover.

Description

The The present invention relates to a connection of a central release trained slave cylinder to a clutch or to the housing cover according to the preamble of claim 1.

One to a transmission input shaft arranged slave cylinder or Zentralausrücker is equipped with a release bearing and forms part of a hydraulic route in conjunction with a master cylinder and a hydraulic line connecting them.

at Activation of the master cylinder becomes the pressure fluid in it transferred through the hydraulic line to the central release and thus triggers an axial displacement of the release bearing. This release bearing consists essentially of a torsionally rigid on a sliding sleeve arranged bearing ring and a with the speed of the clutch rotating bearing shell, being between these two components rotate about a common axis of rotation Rolling elements are housed. The postponement of the release bearing causes the deflection of a plate spring, which controls the engagement and disengagement of the clutch.

in the installed condition, the release bearing a so-called Tongue strike, d. H. exposed to an axial shock of the diaphragm spring tongues be, which increases the wear of the release bearing and thus leads to a reduction in the life.

axial offset and angle error between the transmission input shaft and guide sleeve a central release can also during assembly of gearbox and internal combustion engine to damage lead, which in extreme cases to the failure of the central release in operation can lead.

Farther Both can be separated by the coupling drive components an axis-parallel offset of the force-transmitting waves have, by a self-centering of the release bearing must be compensated, otherwise the release bearing is exposed to increased wear and loss of comfort due to vibrations.

to Compensation or to compensate for such adverse tongue strike and the axial displacement of the force-transmitting waves Various solutions are proposed.

The DE 72 45 141 U discloses a release bearing assembly in which a centering ring is disposed between the spring tongues of the plate spring and the inner ring of the release bearing. The contact surface is designed spherical between the inner ring and the centering, whereby the centering can move relative to the inner ring of the release bearing and align it. Disadvantage of the proposed solution is inter alia a lack of a radial, paraxial compensation in the form of a radial self-centering, so that an offset of the force-transmitting waves can not be compensated. In addition, a release bearing according to this teaching staggers around the ball center of the spherical centering ring, since the release bearing is supported only at this axial height by means of an elastic ring, so that here Laufunförmigkeiten and associated vibrations are to be expected.

To achieve a compensation of the shock of the plate spring tongues and the elimination of the angular displacement of the release bearing relative to the axis of rotation on a release device without additional device at the release bearing, is in the DE 199 12 431 A1 discloses a solution in which the disc spring in the direction release bearing two complementary areas are formed as spherical surface segments, which are radially displaceable relative to the release bearing.

Furthermore, from the DE 101 38 722 A1 a Zentralausrücker known, which is arranged on a housing cover of the clutch and by means of an additional bearing this is rotatable relative to, so that the actual Zentralausrücker turn rotatably mounted relative to the clutch bell and the transmission housing. The outgoing from the Zentralausrücker hydraulic supply line, which is guided by the clutch bell, serves at the same time as an anti-rotation device for the Zentralausrücker. An outer ring is provided with a rolling bearing for rotatably receiving the Zentralausrückers. For mounting the Zentralausrückers in the clutch bell, the outer ring of the Zentralausrückers is connected to the clutch bell by means of bayonet lock. However, with this solution, the problem of Achsversatz- and Taumelschlagausgleiches not solved.

Therefore The object of the invention is the connection of a Zentralausrückers to perform on a clutch cover so that through this transmission an achsparalle len offset the force-transmitting waves, and wobbling due to the diaphragm spring tongue impact the central release is avoided.

These Task is with a Zentralausrücker with the characteristics of claim 1.

The Invention will be described below with reference to an embodiment and accompanying drawings explained in more detail.

It shows:

1 a sectional view of a coupling with deckelfestem Zentralausrücker,

2 a further embodiment of a cover-resistant Zentralausrückers in section.

The in this 1 illustrated coupling 12 has a conventional design, so that can be dispensed with their detailed description. This clutch 12 is in the direction of the output with a diaphragm spring 11 provided, with the plate spring 11 composed essentially of distributed over its circumference arranged tongues. The one of a housing cover 9 enclosed clutch 12 is on a transmission input shaft 6 arranged on the likewise one as Zentralausrücker 1 trained slave cylinder is mounted concentrically. About elastic elements 5 will connect between the clutch 12 and Zentralausrücker 1 produced. The coupling 12 with central release 1 is also housed in a clutch bell, not shown, to which a likewise not shown gear is flanged. The central release 1 consists of a housing in which an interior is formed, which is for receiving and axial displacement of an annular piston 2 serves. On the inner surface of this area as a guide sleeve 7 acting housing of the central release 1 are spaced from each other two, for example, designed as a needle roller bearings 8th arranged on which the Zentralausrücker 1 is stored. Between the plate spring 11 and the piston 2 is a release bearing three executed rolling bearing provided. The outer bearing shell of the release bearing three forms an axial contact surface for the plate spring 11 , The trained as an annular piston piston 2 is in the housing of the central release 1 guided and is by means of a U-ring seal 13 under formation of a pressure chamber 14 sealed against the housing. How out 1 can be seen, is the Zentralausrücker 1 also stationary on the transmission input shaft 6 arranged. This is realized by the Zentralausrücker 1 spaced to the release bearing three another as a cover storage 4 trained rolling bearing is provided. The outer ring 4a this cover bearing 4 is fixed with a perpendicular to the transmission input shaft 6 standing disc 15 connected. This disc 15 is arranged distributed over its circumference arranged openings or recesses, such as holes, provided for receiving fasteners 16 serve. The housing cover 9 the clutch 12 is also end with distributed over its inner circumference arranged openings or recesses, or holes, for receiving fasteners 10 Mistake. The for establishing a connection between Zentralausrücker 1 and housing cover 9 serving elastic elements 5 , Such as leaf springs, also have each end openings or recesses, such as holes. The number of openings or recesses in the housing cover 9 should be doing with the number of openings or recesses in the disc 15 to match. In addition, these openings or recesses should be aligned. About these breakthroughs or recesses, for example, rivet connections with the corresponding component to be connected can be produced. Except rivets are, however, as fasteners 10 and 16 also screws conceivable. By means of these leaf springs 5 is thus a connection between the housing cover 9 and Zentralausrücker 1 can be produced, which is elastic in both the radial and in the axial direction.

During assembly, the transmission input shaft 6 through the release bearing three and the cover camp 4 stuck through it, so that at the same time the Zentralausrücker 1 due to its flexible connection to the housing cover 9 on the transmission input shaft 6 is centered.

By this inventive connection of the central release 1 to the clutch 12 the tumbling movements caused by the tongue strike during operation are not applied to the central release mechanism 1 transferred and also an offset of the axles of Zentralausrücker 1 and clutch 12 or transmission input shaft 6 to each other does not affect the correct functioning of the Zentralausrückers 1 out.

In the 2 illustrated embodiment of a coupling 12 with central release 1 is different too 1 on the one hand in that the guide sleeve used here 7a is executed continuously and thus no recesses for receiving plain bearings 8th has and on the other hand this end via a guide tube connected to the transmission 17 is centered. This embodiment has the advantage that the guide sleeve 7a or the area of the housing acting as a guide sleeve is cheaper to produce and also saves storage. Through the transmission side recording of the central release 1 by means of the guide tube 17 who deliberately do not care about the overall length of the guide sleeve 7a goes, becomes the central release 1 floating on the transmission input shaft 6 stored, so that in addition to 1 Another way of decoupling the Zentralausrückers 1 is shown by occurring vibrations and wobbling movements.

1

CSC

2

piston

3

release bearing

4

cover support

4a

outer ring

5

elastic Element / leaf spring

6

Transmission input shaft

7

guide sleeve

7a

guide sleeve

8th

bearings

9

housing cover

10

Connecting member / rivet

11

Belleville spring

12

clutch

13

Seal / groove ring seal

14

pressure chamber

15

disc

16

Connecting member / rivet

17

guide tube

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 7245141 U [0008]
• - DE 19912431 A1 [0009]
• - DE 10138722 A1 [0010]

Claims (13)

Connection of a central release ( 1 ) to a coupling ( 12 ) or on the housing cover ( 9 ), characterized in that the Zentralausrücker ( 1 ) in addition to its release bearing ( three ) with a cover bearing ( 4 ) is provided between its outer ring ( 4a ) and the housing cover ( 9 ) at least one elastic element ( 5 ) is arranged. Connection according to claim 1, characterized in that the outer ring ( 4a ) with a disc ( 15 ) is firmly connected. Connection according to claim 1, characterized in that the outer ring ( 4a ) at the end as a disk ( 15 ) is trained. Connection according to claim 2 or 3, characterized in that the disc ( 15 ) with a plurality of openings distributed over its circumference or recesses for receiving connecting elements ( 16 ) is provided. Connection according to claim 1, characterized in that the housing cover ( 9 ) at the end towards Zentralausrücker ( 1 ) with a plurality of openings distributed over its circumference or recesses for receiving connecting elements ( 10 ) is provided. Connection according to claim 4 and 5, characterized in that the number of openings or bulges in the housing cover ( 9 ) with the number of openings or recesses in the disc ( 15 ) matches. Connection according to claim 4 to 6, characterized in that the openings or bulges in the housing cover ( 9 ) with the openings or recesses in the disc ( 15 ) are aligned. Connection according to claim 4 and 5, characterized in that the connecting element ( 10 . 16 ) is designed as a rivet or screw. Connection according to claim 1, characterized in that the elastic element ( 5 ) is designed as a leaf spring. Connection according to claim 4, 5 and 9, characterized in that in each case a leaf spring ( 5 ) with at least one connecting element ( 10 ) and at least one connecting element ( 16 ) connected is. Connection according to claim 1, characterized in that in the guide sleeve ( 7 ) acting area of the housing of the Zentralausrückers ( 1 ) two spaced bearings ( 8th ) are used. Connection according to claim 11, characterized in that these bearings ( 8th ) are designed as plain bearings. Connection according to claim 1, characterized in that the Zentralausrücker ( 1 ) on the transmission side on a guide tube ( 17 ) is centered.