DE1775997A1 - FRICTION CLUTCH, ESPECIALLY FOR MOTOR VEHICLES - Google Patents

Description

Patent attorney DtpUng. lVa2 tor ' ty if ^ ⁶ Il- (/ Ils ^iStMt 'eartN. Moruel3? Raaf4Q

LuK plates and clutches / \ Jg / ν * ff

Limited liability company

758 Bühl / Baden, Industriestr. 3 Α ~ 2β ~ «93 - & -

July 5, 1973 177599?

"Friction clutch, especially for motor vehicles"

The invention relates to a friction clutch, in particular for motor vehicles with a flywheel designed as a counter pressure plate and a flywheel attached to it Clutch housing axially movably arranged pressure plate, between which and the counter pressure plate a clutch disc is arranged, with one on the press plate with its outer edge on the clutch housing supported plate spring, which in its inner area with connected to a release device comprising a roller bearing.

Such couplings, as they are called. "Pulled" couplings have become known from US Pat. No. 2,073,146, have a release bearing provided on a sleeve, the The sleeve engages behind the plate spring tongues and the inner ring of the release bearing is axially outside of a sleeve on the sleeve FUhrungsumördelung the clutch housing, which points into the axial space outside of the clutch housing, attached. Such Couplings have the disadvantage that the overall axial length is very large because the actuating device for

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the clutch between the clutch housing and the release bearing Must find space and therefore the release bearing itself on the side facing away from the clutch housing takes up a large amount of space in the axial direction.

The present invention was based on the object to create a coupling of the type described, which is characterized by a particularly short axial length.

This is achieved according to the invention in that the inner Edge of the disc spring with the outer ring of the rolling bearing of the release device and the inner ring of the rolling bearing with connected to a nut return ring for the clutch actuator is. It is thereby achieved that the roller bearing occupying a relatively wide axial space inside of the axial space of the coupling enclosed by the cover can be provided, thereby saving this axial space will. Furthermore, due to the simultaneous connection of the plate spring with the outer ring of the roller bearing trained .nusrücklagers as well as the connection of the release means with the clutch actuation device, So the release ring od. Like. With the inner ring of the roller bearing, the assembly of the clutch despite the small axial Installation space considerably facilitated.

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In a space-saving as well as structurally favorable way In a preferred embodiment of the invention it is provided that the release ring or the like of the clutch actuation device is connected to a sleeve-shaped extension piece, which is the inner ring of the roller bearing positively engages behind. Preferably the Release ring is essentially disk-shaped and is located directly behind the in a space-saving manner Roller bearing. Structural advantages result from the fact that ™

the release ring with a sleeve flanged in the end area against the face of the inner ring of the roller bearing is held. The use of a flanged sleeve results in comparison to a one-piece with a corresponding one Approach the inner ring of the rolling bearing reaching under the release ring. Or the same manufacturing advantages.

The invention is explained below with reference to the drawings like in the embodiment shown in more detail. It is shown in

1 shows a section of a coupling according to the invention

in axial section.
FIG. 2 is a sectional view from the right according to FIG.

As shown in FIGS. 1 and 2, a device according to the invention has Clutch designed as a counter pressure plate 1 swing

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wheel on which a cover-like clutch housing 2 is attached. Between the flywheel 1 and the couplings · lung housing 2 'is provided a pressure plate 3 having ^ near its nußenumfanges after the flywheel 1 side away from projecting cams 4, ^{comprising: i:} which it is supported against a plate spring 5, which is arranged coaxially to the parts 1 to 3 and is supported with its outer circumference centered on the coupling housing 2. Between the counter-pressure plate 1 and the pressing plate 3, a clutch disc 6 provided on both sides with friction linings is arranged. ^

A guide sleeve 7 lying coaxially to the axis of rotation of the coupling is rigidly attached to the coupling housing 2, the longer part of which extends from the clutch housing 2 inwards to the counter-pressure plate 1 and the shorter part of which extends afterwards extends outside. In the guide sleeve 7 is a release bushing 8 axially displaceable. The release bushing 8 carries the end area remote from the flywheel 1 Outer ring 9 of a release roller bearing 10, on the inner ring 11 a preferably ring disk-shaped release member, so a release ring 12 is attached, which protrudes radially over the bushing 8 and the guide sleeve 7, aft of the » Clutch housing 2 facing side of the release ring 12 is a release fork indicated at 13 as a clutch actuator at. In the manner described above, a small overall width is used in terms of design and manufacturing simple structure achieved.

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BATHROOM ORIGINAL - 5 -

In its end region facing away from its roller bearing 10, a stop disk 14 is fastened to the bush 8. the partially located within the socket 8 stop disk 14 engages through distributed over the circumference Axial slots 16 and 17 of the guide sleeve 7 and the bushing 8, the one protruding over the guide sleeve 7 Area 18 of the stop disk 14 on the side of the plate spring 5 facing the flywheel in the

innermost area. The stop washer 14 *

has in the illustrated embodiment in its outer area on the circumference distributed recesses 15 through which the between the slots 16 and 17 lying areas 20 and 21 of the guide sleeve 7 and the bush 8 protrude. The stop washer 14 is supported on the bottom 22 of the slots 17 of the socket 8 and is secured by a snap ring 23 or the like embedded in a corresponding groove. held.

In the embodiment shown in the drawings, the clutch disk 6 has an internally toothed hub 24 on, with which it is axially displaceable on a correspondingly toothed output shaft not shown in detail is arranged. A drive shaft, not shown in detail, is arranged coaxially to the output shaft, which with the counter pressure plate 1 is firmly connected. The output

shaft is guided through the roller bearing 10 out of the clutch.

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If the release ring 12 is moved in the release direction (arrow 19) via the release fork 13 or the like that the pressure plate 3 is relieved and the _{frictional connection prevailing between the counter pressure plate I 1 of} the pressure plate 3 and the clutch disc 6 is canceled.

As Fig. 1 also shows, the release plate 12 is with a in its end regions flanged sleeve 25 against one end face of the inner ring 11 of the nusrticklagerslü held. The socket 8 is shaped inwardly at its outer end, with the stop formed thereby 26 of the outer ring 9 of the release bearing 10 is applied.

The outer end face 27 of the guide sleeve 7 is a counter-stop designed for the release ring 12 or a splash plate 28 attached to it, on which the release ring then applies when, for example, the friction linings of the clutch disc 6 have worn off by a predetermined pale. By the rigid attachment of the guide sleeve 7 on the coupling housing 2 on the one hand and the non-positive connection of the Release ring 12 over the plate spring 5 with the pressure plate 3 on the other hand, this stop ultimately limits the axial one

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Movement path between the clutch housing 2 and the pressure plate 3. This avoids leaf spring elements 29, which connect the pressure plate 3 to the clutch housing 2 in an axially movable manner, during operation due to the wear-related axial movement of the pressure plate 3 or can be bent or deformed during assembly.

The length of the axial slots 16 of the guide sleeve 7 is chosen so that the stop disk 14 only by a predetermined Amount can be moved in / lusrückrichtung (arrow 19). At the end of this movement there is the stop disc 14 on the bottoms 30 of the axial slots 16, so that it is avoided that the disc spring 5 is stretched too much can be.

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Claims (3)

L uK Lamellen und Kupplungsbau δ Gesellschaft «it limited 1775997 liability Bühl / Baden, Industriestr. 3r claims 1. Friction clutch, especially for motor vehicles, with a pressure plate arranged axially movably between a flywheel designed as a counter-pressure plate and a clutch housing attached to it, a clutch disc is arranged between the and the counter-pressure plate, with the pressure plate a plate spring supported by its outer edge on the clutch housing, which in its inner Area is connected to a release device comprising a roller bearing, characterized in that the inner edge of the disc spring (5) with the outer ring (9) of the Rolling bearing (10) of the release device and the inner ring (11) of the rolling bearing (10) with a «rasrückring (12) for the clutch actuation system connected to lat. 2. Friction clutch according to claim 1, characterized in that the release ring (12) is connected to a hock-shaped extension piece, which the inner ring (11) of the rolling bearing (10) engages behind in a form-fitting manner. 409822/0008 ' ² ' 3. Friction clutch according to claim 1 or S _1, characterized in that the release ring (12) is substantially disc-shaped and is located directly behind the roller bearing (10). 408122/0008