DE102016215588A1 - Coupling arrangement with cover-fixed clutch slave cylinder - Google Patents

Abstract

The present invention relates to a clutch assembly, in particular for a vehicle, comprising a clutch cover and a guide sleeve (22) for receiving a transmission input shaft, wherein the guide sleeve (22) is arranged concentrically on the clutch cover and the clutch cover arranged on a on the guide sleeve (22) Cover bearing (12) is mounted, characterized in that the cover bearing (12) has an inner ring (14), the guide sleeve side has a receptacle (18) for both sides axially blocking receiving a fixing (20) or a both sides axially fixed fixing means, and that the guide sleeve (22) has a Fixiergeometrie (24) for both sides axially fixing interaction with the fixing means (20) or a fixing means fixed axially on both sides. As a result, a simple assembly of the coupling arrangement can be made possible in summary.

Description

The present invention relates to a clutch assembly with a cover-tight clutch slave cylinder, a cover bearing for such a clutch assembly, a hydraulic system and a method for mounting a clutch assembly.

As is known, disengaging devices for clutches of motor vehicles serve to press a clutch disc connected to a crankshaft of an engine against a corresponding clutch disc of a transmission shaft of the motor vehicle. This is done in a hydraulically actuated disengaging device by means of a piston which is received in a housing of a slave cylinder and is acted upon via a connectable to a hydraulic supply line with a fluid, such as oil or brake fluid. In this case, the piston may be a simple or double-acting annular piston which is positioned about a longitudinal axis of the release device.

In hydraulically actuated disengaging devices, axial vibrations from the crankshaft, which are transmitted to the disengaging device, can lead to pressure fluctuations in the fluid system. To avoid this, concepts have been developed which provide for assembly or integration of the release device on the clutch cover. Such solutions are referred to as cover-fixed release or cover-tight clutch slave cylinder. Thus, the concentric slave cylinder and the clutch cover are combined to form a functional unit with internally closed power flow in a cover-resistant release. The connection to the clutch cover is usually via a cover bearing, which is provided in addition to a release bearing. As a result, the slave cylinder does not rotate with the clutch cover. Such a release device is for example in WO 2014/071938 A1 described.

However, such solutions can still offer room for improvement.

It is the object of the present invention to at least partially overcome the disadvantages known from the prior art. In particular, it is the object of the present invention to provide a solution by means of which the production of a clutch arrangement, in particular a cover-tight clutch slave cylinder, can be simplified.

The object is achieved by a coupling arrangement with the features of claim 1, by a cover bearing with the features of claim 7, by a hydraulic system with the features of claim 9 and by a method having the features of claim 10. Preferred embodiments of The invention are described in the subclaims, in the description or the figures, wherein further features described or shown in the subclaims or in the description or the figures may individually or in any combination constitute an object of the invention, if not clear from the context the opposite results.

It is proposed a clutch assembly, in particular for a vehicle, comprising a clutch cover and a guide sleeve for receiving a transmission input shaft, wherein the guide sleeve is arranged concentrically on the clutch cover and the clutch cover is mounted on a arranged on the guide sleeve cover bearing, wherein the cover bearing has an inner ring , the guide sleeve side has a receptacle for both sides axially blocking receiving a fixing or a both sides axially fixed fixing means, and wherein the guide sleeve has a Fixiergeometrie for both sides axially fixing interaction with the fixing or a both sides axially fixed fixing.

The above-described clutch assembly is particularly part of a friction clutch for a vehicle, such as for a motor vehicle. For example, but in no way limiting, it may be a single-disc dry clutch or a wet clutch. Such friction clutches are used, for example, to interrupt a torque flow from an internal combustion engine to a drive train of a motor vehicle.

The clutch assembly comprises in a conventional manner a clutch cover and a guide sleeve which is arranged concentrically on the clutch cover, for example, fixed. The guide sleeve may support a clutch slave cylinder, such as a clutch slave cylinder configured as a CSC (Concentric Slave Cylinder) or central release clutch, or be part of and provided to receive a transmission input shaft. The clutch cover is mounted on a arranged on the guide sleeve cover bearings, such as bearings stored. Thus, this coupling arrangement describes a cover-tight clutch slave cylinder or a cover-resistant release (DFA).

Within the clutch cover, a pressure plate for frictionally pressing a clutch disc to a connectable to an output side of an internal combustion engine Counter-pressure plate may be provided. The clutch cover and / or the pressure plate are preferably made of metal. The pressure plate is rotatably arranged in particular in the clutch cover via at least one leaf spring and with respect to the clutch cover in an axial direction, that is, in particular parallel to a rotational axis of the pressure plate, limited displaceable.

In a coupling arrangement described above, it is further provided that the cover bearing has an inner ring, the guide sleeve side has a receptacle for both sides axially blocking receiving a fixative or a both sides axially fixed fixing means, and that the guide sleeve Fixierometrie axially fixing on both sides interacting with the fixative or has a fixing means axially fixed on both sides. In particular, this embodiment allows significant advantages over the known from the prior art solutions.

The inner ring may be in a conventional manner a component of the cover bearing, wherein the cover bearing in addition to the inner ring has a rotatable to the inner ring outer ring. In a cover-tight clutch slave cylinder, the clutch housing can be fixed to the outer ring and thus mounted on the guide sleeve.

The above-described solution thus enables an axial fixation of the guide sleeve on the cover bearing in both axial directions. As a result, both a secure fixing of the fixing in a first axial direction take place when the guide sleeve is pushed into the cover bearing. In addition, a corresponding fixing of the guide sleeve located in the cover bearing in the opposite direction to the insertion direction arranged second axial direction can be made possible.

By means of a previously described coupling arrangement, it can be made possible that the assembly process is significantly simplified. Because according to the solutions of the prior art, in particular when the cover-tight clutch slave cylinder is fixed with a retaining ring on the cover bearing, a relatively large effort is necessary. Because conventionally, the clutch is pushed onto the clutch slave cylinder by means of a press and the guide sleeve of the clutch slave cylinder must dive through the cover bearing to install the circlip with a pair of pliers by hand. In such solutions, the cover-tight clutch slave cylinder is then pushed back into position with the help of the press after fixing the securing ring, wherein the locking ring is secured on the side of the clutch disc on the cover bearing. This means that the guide sleeve is pushed back against the installation direction until the retaining ring rests on the cover bearing shoulder.

Through a coupling arrangement described above, this assembly can be significantly simplified, since the clutch slave cylinder is guided only in the cover bearing, be it by a movement of the clutch slave cylinder or the clutch until the corresponding fixation of the cover bearing or the guide sleeve with the Fixiergeometrie the guide sleeve or the recording of the Cover bearing interacts. As a result, assembly steps can be omitted, which can significantly simplify the process and possibly make it cheaper.

Thus, the mounting of the fixing means on the guide sleeve can be simplified and automated more easily. By the above-described solution, the clutch assembly can be securely mounted in one step with a force-displacement monitoring. In this case, the clutch slave cylinder is only moved to its intended position and it is not necessary to move it through the cover bearing and back again.

The fixing agent itself can be easily mounted, for example, by the predetermined geometry of the cover bearing, such as the bearing inner ring already in the manufacture of the bearing, so that the approximately arranged in the receptacle fixing interacts independently with the Fixiergeometrie the guide sleeve, for example, snaps into a groove provided , and about the transport of the warehouse is secured by loss. Alternatively, the fixing means may be designed, for example, in one piece with the cover bearing, in particular the inner ring. The same applies to the fixative or the Fixiergeometrie the guide sleeve.

In principle, it is thus encompassed by the scope of the present invention that a fixing means in the fixation geometry of the guide sleeve or otherwise arranged on the guide sleeve and can be arranged and the fixing means interacts axially when inserting the guide sleeve into the cover bearing with the recording axially, or particularly preferred in that a fixing means is arranged or can be arranged in the receptacle of the cover bearing or otherwise on the cover bearing, and the fixing means interacts axially fixing on both sides when the guide sleeve is pushed into the cover bearing with the fixing geometry.

It can preferably be provided that the receptacle of the cover bearing is designed as a groove, for example, consists of a groove. The groove may in particular be radially aligned. In this embodiment, the recording can be particularly simple be configured, for example, by a corresponding shaping or subsequent erosive treatment, a groove in substantially any desired shape can be generated. Thus, a particularly effective and exact adaptation to the fixing means can be realized, which can enable effective fixing in both axial directions.

It may further be preferred that the inner ring is constructed in two parts such that the receptacle is bounded in a first axial direction by a first component and that the receptacle is delimited by a second component in a second axial direction opposite to the first axial direction , This embodiment can further simplify the production, since the two components can be connected to one another, for example after the fixing agent has been inserted, so that the fixing means can be positioned particularly easily. In this embodiment, it is also possible to use non-flexible or rigid fixing, such as rigid circlips, which may allow a particularly high stability of the fixing means and thereby a particularly stable fixing under certain circumstances.

With regard to the fixation geometry, it can be provided that the fixation geometry has a groove, for example consists of a groove. The groove may in particular be radially aligned. In this embodiment, the fixation geometry can in turn be designed particularly simple, since, for example, by a corresponding molding or subsequent abberative treatment of the guide sleeve, a groove in substantially any desired shape can be generated. Thus, a particularly effective and exact adaptation to the fixing means can be realized, which can enable effective fixing in both axial directions.

Furthermore, it may be advantageous for the guide sleeve to have a guide geometry at the end. In particular, a guide geometry can be provided at one end of the guide sleeve, which is intended to be pushed into the cover bearing. For example, can be provided as a guide geometry chamfer. This guide geometry can thus be designed, for example, such that the diameter of the guide sleeve decreases in the direction of the end to be inserted into the cover bearing and thus there is a guide surface which is aligned at an angle to an axial direction. Furthermore, provision may be made for the end region having the guide geometry to be elastically deformable radially inwards. Particularly advantageously, the guide geometry with respect to the guide sleeve end can be arranged to the Fixiergeometrie, such as a groove. In this configuration, it can be made possible for the guide sleeve to slide along the fixing means in a simple manner, optionally with the end region deforming radially inwards, so that the fixing means can interact with the fixing region, for example, latching into the groove. This can further simplify the assembly of the clutch assembly.

In the case of a rigid guide sleeve can further by the guide geometry of the guide sleeve, the fixing, such as the snap ring, centered and stretched over the slope until, for example, the snap ring can snap into the groove. Here, the groove depth in the bearing inner ring should be designed accordingly so that there is sufficient space for the radial expansion of the snap ring available.

With regard to the fixing means, it may be provided that this is a securing ring, in particular a snap ring. Such fixatives are available inexpensively and further provide an effective axial securing action. In addition, in particular circlips, such as snap rings can be easily arranged in the receptacle or interact with the Fixiergeometrie.

With regard to further advantages and technical features of the coupling arrangement, reference is made to the description of the cover bearing, the hydraulic coupling system, the method, the figures and the description of the figures.

The present invention furthermore relates to a cover bearing for a coupling arrangement, in particular for a cover-resistant clutch slave cylinder, comprising an inner ring and an outer ring movably configured for this, wherein the inner ring has an inner surface on which a receptacle for receiving a fixing means axially blocking on both sides or on both sides axially fixed fixing is provided. The inner surface is in particular the surface which is intended to come into contact with the guide sleeve.

Such a cover bearing allows easy installation both in the first production, and thus also in an end customer. The need to distribute due to the installation effort always already a fully assembled clutch assembly to a customer, thus eliminating. By providing a cover bearing described above, a delivery of the clutch slave cylinder can be carried out separately from the associated clutch or after a simplified assembly as an overall arrangement. This allows a high variability in the production.

In the provision of a fixing agent, this can be configured, for example, in one piece with the inner ring.

Furthermore, it may be provided that a fixing means is arranged in the receptacle, the fixing means and the cover plate being thus designed in two parts. The fixing agent is blocked axially by the provision in the receptacle in particular on both sides or axially stationary.

In this embodiment, as well as with a fixing means fixed elsewhere, an intermediate product for producing a coupling arrangement or a hydraulic coupling system can be created in a particularly advantageous manner. Such a cover bearing is characterized in that only one appropriately designed guide sleeve needs to be inserted into the cover bearing and the fixing means, such as a locking ring, such as a snap ring, with the Fixiergeometrie, such as a groove, the guide sleeve can interact. For example, the fixing can engage in the groove and thus allow an axial fixation of the guide sleeve in the cover bearing.

With regard to further advantages and technical features of the cover bearing, reference is made to the description of the coupling arrangement, the hydraulic coupling system, the method, the figures and the description of the figures.

The subject of the present invention is furthermore a hydraulic coupling system, comprising a coupling arrangement, as described in detail above, and / or a cover bearing, as described in detail above.

In such a hydraulic clutch system, which may be arranged for example in a vehicle, such as a motor vehicle, a clutch master cylinder is provided in a conventional manner, which can act on the clutch slave cylinder with hydraulic fluid. As a result, the clutch slave cylinder, which may be designed as a CSC or CSC, for example, by an indentor or releaser cause a clutch is opened or closed, so as to allow a coupling operation. Such a coupling system comprises in particular a cover-tight clutch slave cylinder or a cover-resistant release.

Such a hydraulic clutch system in this case has a clutch assembly and / or a cover bearing, as described above in detail.

As a result, it can be made possible in summary that the assembly or manufacturability of such a hydraulic system can be simplified.

With regard to further advantages and technical features of the hydraulic coupling system, reference is made to the description of the coupling arrangement, the cover bearing, the method, the figures and the description of the figures.

• a) Anordnen eines Fixiermittels an einem Deckellager, insbesondere in einer Aufnahme eines Deckellagers, wobei das Fixiermittel an einer inneren Oberfläche eines Innenrings des Deckellagers angeordnet wird; und
• b) Bereitstellen einer Führungshülse, wobei die Führungshülse eine Fixiergeometrie zum beidseitig axial fixierenden Wechselwirken mit dem Fixiermittel aufweist, und
• c) Einschieben der Führungshülse in das Deckellager derart, dass das Fixiermittel fixierend mit der Fixiergeometrie wechselwirkt, oder oder aufweisend die Verfahrensschritte:
• d) Anordnen eines Fixiermittels an einer Führungshülse, insbesondere in einer Fixiergeometrie einer Führungshülse, wobei das Fixiermittel an einem Außenumfang der Führungshülse angeordnet wird; und
• e) Bereitstellen eines Deckellagers, wobei das Deckellager eine Aufnahme zum beidseitig axial fixierenden Wechselwirken mit dem Fixiermittel aufweist, und
• f) Einschieben der Führungshülse in das Deckellager derart, dass das Fixiermittel fixierend mit der Aufnahme wechselwirkt.

The subject matter of the present invention is furthermore a method for assembling a coupling arrangement, comprising the method steps:

• a) arranging a fixing means on a cover bearing, in particular in a receptacle of a cover bearing, wherein the fixing means is arranged on an inner surface of an inner ring of the cover bearing; and
• b) providing a guide sleeve, wherein the guide sleeve has a Fixiergeometrie for both sides axially fixing interaction with the fixing, and
• c) inserting the guide sleeve into the cover bearing in such a way that the fixative interacts with the fixation geometry in a fixed manner, or or comprising the method steps:
• d) arranging a fixing means on a guide sleeve, in particular in a Fixiergeometrie a guide sleeve, wherein the fixing means is disposed on an outer periphery of the guide sleeve; and
• e) providing a cover bearing, wherein the cover bearing has a receptacle for both sides axially fixing interaction with the fixing means, and
• f) inserting the guide sleeve into the cover bearing in such a way that the fixing agent interacts with the receptacle in a fixing manner.

In accordance with method step a), a fixing means is arranged on a cover bearing, in particular in a receptacle of a cover bearing, wherein the fixing means is arranged on an inner surface, that is to say on an inner surface of the cover bearing coming into contact with or aligned with the guide sleeve. Thus, as described above, in particular to the inner side or inner surface of an inner ring of a cover bearing, a fixing means, such as a retaining ring, is inserted. This can be done, for example, with elastic deformation of the fixing agent or by a subsequent joining together of two components. Alternatively, a fixing means may for example be arranged integrally with the inner ring, for example in the production of the cover bearing.

Furthermore, in accordance with method step b), provision is made of a guide sleeve, wherein the Guide sleeve has a Fixiergeometrie for fixing interaction with the fixing. For example, this may be a conventional guide sleeve having a groove at the end for interacting with the fixative. In this regard, reference is made in detail to the above description.

Finally, according to method step c), the insertion of the guide sleeve into the cover bearing takes place in such a way that the fixing means interacts, in particular axially fixing on both sides, with the fixation geometry. For example, the fixing means positioned in the receptacle of the cover bearing, somewhat a circlip, engage in a groove of the guide sleeve and thus enable a corresponding fixation. In this case, this step should in particular describe a relative movement of the guide sleeve and cover bearing, regardless of which component is moved and whether a component is fixed.

Alternatively, the method steps d) to f) can be carried out, which are configured substantially corresponding to the method steps a) to c), wherein, however, the fixing agent is arranged in the fixing geometry or approximately in one piece with the guide sleeve and interacts with the receptacle of the cover bearing.

The above-described method thus relates in particular to the assembly of cover-tight clutch slave cylinders or cover-resistant releasers to form a clutch assembly, as described above in detail. In this case, it is fundamentally possible for the process to be carried out uniformly at one site, or for an intermediate product to be formed with steps a) and b) or d) and e), and process step c) or f) takes place at a different location.

An advantage of the above-described method is in particular a very simple installation, which can be carried out by simple and few process steps.

With regard to further advantages and technical features, reference is made to the above description of the coupling arrangement, the cover bearing, the hydraulic coupling system, the figures and the description of the figures.

In the following, particularly preferred embodiments of the invention will be explained with reference to the accompanying drawings, wherein it is explicitly pointed out that the object according to the invention is not limited to the described embodiments. Show it:

1 a schematic sectional view of an embodiment of a clutch assembly;

2 a schematic sectional view of another embodiment of a clutch assembly; and

3 a schematic representation of a force-displacement diagram.

In 1 is an embodiment of a clutch assembly 10 shown before assembly. The coupling arrangement 10 In particular, it is for use in a hydraulic clutch system of a vehicle, such as a motor vehicle.

The coupling arrangement 10 includes a cover bearing 12 of which in 1 only the inner ring 14 is shown. Furthermore, the clutch arrangement comprises 10 a clutch slave cylinder 16 , At the cover camp 12 a clutch cover can be stored. If the cover bearing 12 thus on the clutch slave cylinder 16 is fixed, the clutch assembly serves as a cover-tight clutch slave cylinder or cover-tight release (DFA).

Regarding the cover bearing 12 it is envisaged that the inner ring 14 guide sleeve side a recording 18 for both sides axially blocking receiving a fixing agent 20 having. The recording 18 is designed as a groove and the fixing agent 20 is in 1 designed as a snap ring.

Regarding the clutch slave cylinder 16 it is envisaged that this is a guide sleeve 22 for receiving a transmission input shaft, wherein the guide sleeve 22 a configured as a groove Fixiergeometrie 24 for interacting axially with the fixing agent on both sides 20 having. Furthermore, in the mounting direction end to the Fixiergeometrie 24 a leadership geometry 26 , such as a chamfer.

Regarding the clutch slave cylinder 16 is in 1 further shown by a spring 28 preloaded release mechanism 30 that by one in a cylinder 32 movable piston 34 about hydraulic is actuated.

Such a clutch assembly significantly simplifies assembly, since the clutch slave cylinder 16 in mounting direction, by the arrow 36 is shown in the cover bearing 12 can be performed, whereupon according to 1 the snap ring in the groove of the guide sleeve 22 can engage.

In 2 is a further embodiment of a coupling arrangement 10 shown, wherein in the embodiment according to 2 from the clutch slave cylinder 16 only the guide sleeve 22 shown is with the cover bearing 12 is fixed. In the 2 it can be seen that the inner ring 14 is constructed in two parts such that the recording 18 in a first axial direction of a first component 38 is limited and that the recording 18 in a second axial direction opposite to the first axial direction of a second component 40 is limited. The components 38 . 40 can thereby by connecting means 42 , such as screws, be fixed to each other.

The 3 shows an exemplary path-time diagram, which should show that the assembly of a prescribed clutch assembly with a corresponding device with a force-displacement monitoring in series is easily possible without overcoming the Ausknüpfkraft of the bearing and thus destroy the camp ,

LIST OF REFERENCE NUMBERS

10

 clutch assembly

12

 cover support

14

 inner ring

16

 Clutch slave cylinder

18

 admission

20

 fixer

22

 guide sleeve

24

 Fixiergeometrie

26

 guide geometry

28

 feather

30

 release mechanism

32

 cylinder

34

 piston

36

 arrow

38

 component

40

 component

42

 fastener

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

• WO 2014/071938 A1 [0003]

Claims (10)

Coupling arrangement, in particular for a vehicle, comprising a clutch cover and a guide sleeve ( 22 ) for receiving a transmission input shaft, wherein the guide sleeve ( 22 ) is arranged concentrically on the clutch cover and the clutch cover on one of the guide sleeve ( 22 ) arranged ceiling bearing ( 12 ), characterized in that the cover bearing ( 12 ) an inner ring ( 14 ), the guide sleeve side a receptacle ( 18 ) for both sides axially blocking receiving a fixing agent ( 20 ) or an axially fixed fixing means on both sides, and in that the guide sleeve ( 22 ) a fixation geometry ( 24 ) for both sides axially fixing interaction with the fixing agent ( 20 ) or a fixing means axially fixed on both sides. Coupling arrangement according to claim 1, characterized in that the receptacle ( 18 ) is designed as a groove. Coupling arrangement according to claim 1 or 2, characterized in that the inner ring ( 14 ) is constructed in two parts such that the receptacle ( 18 ) in a first axial direction of a first component ( 38 ) and that the recording ( 18 ) in a second axial direction opposite to the first axial direction of a second component ( 40 ) is limited. Coupling arrangement according to one of claims 1 to 3, characterized in that the fixation geometry ( 24 ) has a groove. Coupling arrangement according to one of claims 1 to 4, characterized in that the guide sleeve ( 22 ) end a guide geometry ( 26 ) having. Coupling arrangement according to one of claims 1 to 5, characterized in that the fixing means ( 20 ) is a snap ring, such as a snap ring is. Cover bearing for a clutch assembly, in particular for a cover-tight clutch slave cylinder ( 16 ), comprising an inner ring ( 14 ) and an outer ring movably designed for this purpose, characterized in that, the inner ring ( 14 ) has an inner surface on which a receptacle ( 18 ) for both sides axially blocking receiving a fixing agent ( 20 ) or a fixing means fixed axially on both sides ( 20 ) is provided. Cover bearing according to claim 7, characterized in that in the receptacle ( 18 ) a fixing agent ( 20 ) is arranged. Hydraulic clutch system for a vehicle, comprising a clutch arrangement ( 10 ) according to one of claims 1 to 6 and / or a cover bearing ( 12 ) according to one of claims 7 or 8. Method for assembling a coupling arrangement ( 10 ), comprising the method steps: a) arranging a fixing agent ( 20 ) on a cover bearing ( 12 ), in particular in a photograph ( 18 ) of a cover bearing ( 12 ), the fixative ( 20 ) on an inner surface of an inner ring ( 14 ) of the cover bearing ( 12 ) is arranged; and b) providing a guide sleeve ( 22 ), wherein the guide sleeve ( 22 ) a fixation geometry ( 24 ) for both sides axially fixing interaction with the fixing agent ( 20 ), and c) inserting the guide sleeve ( 22 ) in the cover bearing ( 12 ) such that the fixing agent ( 20 ) axially fixing on both sides with the fixation geometry ( 24 ), or comprising the method steps: d) arranging a fixing agent ( 20 ) on a guide sleeve ( 22 ), in particular in a fixation geometry ( 24 ) a guide sleeve ( 22 ), the fixative ( 20 ) on an outer periphery of the guide sleeve ( 22 ) is arranged; and e) providing a cover stock ( 12 ), wherein the cover bearing ( 12 ) a recording ( 18 ) for both sides axially fixing interaction with the fixing agent ( 20 ), and f) inserting the guide sleeve ( 22 ) in the cover bearing ( 12 ) such that the fixing agent ( 20 ) axially fixing on both sides with the receptacle ( 18 ) interacts.

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