WO2013107688A1 - Roller bearing arrangement, in particular release bearing arrangement - Google Patents

Roller bearing arrangement, in particular release bearing arrangement Download PDF

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Publication number
WO2013107688A1
WO2013107688A1 PCT/EP2013/050439 EP2013050439W WO2013107688A1 WO 2013107688 A1 WO2013107688 A1 WO 2013107688A1 EP 2013050439 W EP2013050439 W EP 2013050439W WO 2013107688 A1 WO2013107688 A1 WO 2013107688A1
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WO
WIPO (PCT)
Prior art keywords
retaining ring
piston
rolling bearing
latching
arrangement according
Prior art date
Application number
PCT/EP2013/050439
Other languages
German (de)
French (fr)
Inventor
Bruno dos Santos SOUZA
Welington Santos
Luis Albuquerque
Original Assignee
Schaeffler Technologies AG & Co. KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2013107688A1 publication Critical patent/WO2013107688A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063Fixing them on the shaft
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • F16C19/163Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • F16D23/14Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
    • F16D23/142Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings with a resilient member acting radially between the bearing and its guide means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00Apparatus or articles in engineering in general
    • F16C2361/43Clutches, e.g. disengaging bearing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/58Raceways; Race rings
    • F16C33/588Races of sheet metal
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00Special features for couplings or clutches
    • F16D2300/12Mounting or assembling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00Fluid-actuated clutches
    • F16D25/08Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D25/082Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
    • F16D25/083Actuators therefor

Definitions

  • the invention relates to a rolling bearing assembly, in particular a release bearing assembly, comprising a rolling bearing and a rolling bearing bearing, preferably hydraulically movable piston on which the rolling bearing is fixed by means of a holding element with the interposition of an annular spring element.
  • a rolling bearing assembly in particular a release bearing assembly
  • a rolling bearing bearing preferably hydraulically movable piston on which the rolling bearing is fixed by means of a holding element with the interposition of an annular spring element.
  • an adjustable piston axially movable bearings are used for example in clutches for use, there primarily in the form of Ausgurlageran angelen.
  • the piston is, for example, part of a concentric slave cylinder (CSC) which can be controlled to initiate the movement of the piston through the movement of the piston, thereby actuating the clutch.
  • CSC concentric slave cylinder
  • a metal retaining ring which at the end of the piston, this cross-over, is placed on the outside and snapped with a plurality of inwardly bent locking or snap lugs on the outside of the piston.
  • an annular groove is formed on the upper side, into which an annular spring element engages in the assembly position and is fixed there, and which in turn engages over the roller bearing or a ring of the roller bearing.
  • the rolling bearing is fixed to the retaining ring, which for this purpose has a corresponding circumferential shoulder which is immediately adjacent to the groove.
  • the metal retaining ring thus serves on the one hand the connection of roller bearings and pistons, on the other hand, he carries the bearings directly themselves, so he must be interpreted accordingly.
  • the invention provides that the
  • Holding element is a sleeve-like retaining ring made of plastic, which snaps in the mounting position, in which it is inserted into the hollow cylindrical piston with at least one at its lower end radially outwardly projecting locking element in a provided on the inner surface of the piston locking receptacle, wherein the Retaining ring with an upper end radially outwardly projecting annular flange engages over the annular spring element and presses against the roller bearing.
  • a very simple designed retaining element is provided in the form of a sleeve-shaped retaining ring, which is a simple plastic component.
  • this sleeve-shaped plastic retaining ring is pushed into the hollow cylindrical piston.
  • the retaining ring has on the outside at least one latching element which is slightly resilient, so that it can easily deflect when the retaining ring is pushed into the hollow cylindrical piston.
  • On the piston side at least one latching receptacle is likewise provided on the inner wall, into which the latching element snaps when the final assembly position is reached.
  • a radially outwardly annular flange is provided at the other end of the sleeve-shaped retaining ring, which engages over the spring element, about which the rolling bearing is fixed.
  • the rolling bearing is supported directly on the front side of the piston, and not as in the prior art on the holding element itself. That is, in the rolling bearing assembly according to the invention, the holding member actually has only one holding function, but not a support function , This makes it possible to easily design the retaining element and in particular of plastic, preferably as a simple injection-molded component to manufacture.
  • the roller bearing is first set on the piston side, after which the annular spring element is attached. Now only the sleeve-shaped plastic retaining ring is to be inserted into the piston until it reaches the final assembly position, in which the locking element snaps into the locking receptacle.
  • This high-strength connection guarantees a secure fixation of the rolling bearing, which is stretched over the annular flange and the spring element against the piston end face.
  • the latching element itself can be designed as a circumferential latching projection, wherein the retaining ring preferably has at least one slot extending over at least part of its length. While the slot gives the sufficient spring elasticity, so that the locking projection when inserting slightly spring and can rebound when reaching the mounting position in the locking position, over the length of the locking projection, which completely rotates except for at least one slot, a large undercut on the corresponding Locking record on the piston given so that a large area, extremely strong connection is achieved.
  • a plurality of such slots may be provided, for example, four, so that several, for example four, spring tongues result, each carrying a portion of the locking projection.
  • the locking projection has a sufficient intrinsic elasticity due to the material used, that it deforms sufficiently upon insertion and snaps back again, no slot must be provided.
  • the outer diameter of the retaining ring in the area between the locking element (s) and the annular flange is designed essentially corresponding to the inner diameter of the piston in the region in which the holder and piston lie opposite one another. This is why, in order to ensure that the retaining ring in the mounting position as possible without play, ie free of wobble, is received in the piston. Of course, a minimum diameter difference should be given so that the retaining ring can be inserted.
  • the retaining ring according to the invention is made of plastic. It offers here any plastic, which has the desired strength properties. Of course, it is crucial to the purpose of the rolling bearing assembly.
  • the retaining ring is as described an injection molded part.
  • the piston itself is preferably part of a concentric slave cylinder, frequently also called CSC (concentric slave cylinder).
  • CSC concentric slave cylinder
  • Figure 2 is a schematic diagram with three sectional views showing the assembly process of the retaining ring
  • Figure 3 is a sectional view through a rolling bearing assembly of a second
  • FIG. 4 shows a perspective view of a retaining ring of a further embodiment
  • Figure 5 is a sectional view through a rolling bearing assembly and use of the retaining ring of Figure 4, and
  • Figure 6 is a partial perspective view in section of a piston of another
  • Figure 1 shows a rolling bearing assembly 1 according to the invention, comprising the
  • Rolling 2 in the example shown, an angular contact ball bearing with (see Figure 2) an inner ring 3, an outer ring 4 and rolling elements running therebetween in the form of balls 5. Also provided is an annular spring element 6, here a plate spring, the inwardly directed Radial flange 7 of the inner ring 3 overlaps, see again Figure 2.
  • part of the rolling bearing arrangement according to the invention is a piston 8, to which the roller bearing 2 is to be fastened, for which purpose a retaining element 9 in the form of a sleeve-shaped retaining ring 10 is used, which is a plastic component.
  • a locking element 1 1 in the form of a radially outwardly standing locking projection 12 is provided in the example shown radially circumferentially. This is used for locking behind a latching portion forming, in the example shown also circumferential latching shoulder 13 which is formed on the inner side 14 of the piston 8.
  • the retaining ring 10 is made of plastic, so that a certain flexibility is given to elastic elasticity in the area of the latching projection 12, so that this area can easily deflect.
  • Figure 2 shows an illustrative representation of the assembly process.
  • the rolling bearing 2 is attached to the piston 8.
  • the rolling bearing 2 is set with the radial flange 7 of the inner ring 3 on the upper end face 15 of the piston 8.
  • the spring element 6 is placed.
  • the sleeve-shaped plastic retaining ring 10 is inserted from above.
  • the locking projection 10 is now, see Figures b) and c), pushed further and further into the piston 8, the locking projection and the annular region carrying it deforms easily, the outer diameter of the retaining ring 10 is substantially the inner diameter of the Piston 8 in the upper region, ie in the area between the end face 15 and the latching shoulder 13 corresponds. This results in a secure leadership and tilt-free recording.
  • Detent projection 12 the region of the locking shoulder 13, behind which he then snaps, see Figure 2c).
  • the latching projection 12 is then received in the groove 16, which is formed below the latching shoulder 13. This is a safe anchoring of the retaining ring 10 in the piston 8 is given.
  • FIG 3 shows in the form of a sectional view of a further embodiment of a rolling bearing assembly 1 according to the invention, wherein in this figure as well as in the other figures for like components like reference numerals are used.
  • a sleeve-shaped plastic retaining ring 10 is used, which is snapped in the piston 8 and via the annular flange 17, the roller bearing 2 is fixed by the spring element 6.
  • the locking shoulder 13 is realized by a simple rotation.
  • the latching projection 12 also snaps behind the locking shoulder 13, the attachment is carried out in the same manner as described with reference to Figures 1 and 2.
  • the piston is easier to manufacture, since the groove 16 does not have to be formed separately via a recess, but the locking shoulder 13 can be formed by the simple rotation.
  • FIGS 4 and 5 show another embodiment of a usable retaining ring 10 in sleeve form, again made of plastic.
  • the retaining ring 10 in addition to the annular flange 17 a plurality of longitudinal slots 18, in the example shown, four such longitudinal slots 18 are provided, which extend approximately over the half te extend its axial length.
  • each spring tongue 19 carries a locking projection 12.
  • the latching projection ultimately completely revolves, only interrupted by the longitudinal slots 18 which define the individual spring tongues 19 and their latching projection.
  • FIG. 6 shows a sectioned internal view of a piston 8 of a further embodiment.
  • the basic structure corresponds to the piston 8 of Figures 1 and 2, but here no circumferential latching shoulder 13 is provided, but a plurality of latching shoulder portions 13a, which rotate only a certain peripheral portion.
  • This training is sometimes easier to produce in the plastic injection process as a circumferential detent shoulder.
  • the peripheral detent projection of the retaining ring 10 according to FIGS. 1 and 2 or may be the individual ones
  • Locking projections of the retaining ring 10 of Figure 4 readily lock behind these shorter sized locking shoulder portions 13a.
  • the piston 8 irrespective of how it is concretely constructed, is preferably part of a concentric slave cylinder, but it can also be part of another actuator element configuration.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

Roller bearing arrangement, in particular release bearing arrangement, comprising a roller bearing (2) and a preferably hydraulically movable piston carrying the roller bearing (2), the roller bearing (2) being fixed on said piston by means of a retaining element (9) with an intervening annular spring element (6), wherein the retaining element (9) is a sleeve-like retaining ring made of plastic which, in the assembled position in which it is inserted into the hollow cylindrical piston (8), engages with at least one catch element (11) projecting radially outward at the lower end of the retaining ring into an engagement receptacle (12) provided on the inner surface (14) of the piston (8), wherein the retaining ring (9) reaches by means of an annular flange (17) projecting radially outward at the upper end of the retaining ring over the annular spring element (6) and presses it against the roller bearing (2).

Description

Bezeichnung der Erfindung  Name of the invention
Wälzlageranordnung, insbesondere Aurücklageranordnung Rolling bearing assembly, in particular Aurücklageranordnung
Die Erfindung betrifft eine Wälzlageranordnung, insbesondere eine Ausrücklageranordnung, umfassend ein Wälzlager sowie einen das Wälzlager tragenden, vorzugsweise hydraulisch bewegbaren Kolben, an dem das Wälzlager mittels eines Halteelements unter Zwischenschaltung eines ringförmigen Federelements fixiert ist. Über einen verstellbaren Kolben axial bewegliche Wälzlager kommen beispielsweise bei Kupplungen zur Anwendung, dort vornehmlich in Form von Ausrücklageranordnungen. Der Kolben ist beispielsweise Teil eines konzentrischen Nehmerzylinders (concentric slave cylinder, CSC), der gesteuert betätigt werden kann, um über die Kolbenbewegung die Lagerbewegung zu initiieren, worüber die Kupplung betätigt wird. Hierzu ist es erforderlich, das Wälzlager mit dem Kolben zu verbinden. Bekannt ist hierzu die Verwendung eines metallenen Halterings, der am Ende des Kolbens, diesen außenseitig übergreifend, aufgesetzt wird und mit mehreren nach innen gebogenen Rast- oder Schnappnasen am Kolben außenseitig verschnappt. An diesem metallenen Haltering ist oberseitig eine Ringnut ausgebildet, in die in der Montagestel- lung ein ringförmiges Federelement eingreift und dort fixiert wird, und das seinerseits das Wälzlager respektive einen Ring des Wälzlagers übergreift. Über diesen Übergriff wird das Wälzlager am Haltering fixiert, der hierzu eine entsprechende umlaufende Schulter aufweist, die unmittelbar an die Nut angrenzt. Der metallene Haltering dient also einerseits der Verbindung von Wälzlager und Kolben, andererseits trägt er das Wälzlager unmittelbar selbst, weshalb er entsprechend auszulegen ist. The invention relates to a rolling bearing assembly, in particular a release bearing assembly, comprising a rolling bearing and a rolling bearing bearing, preferably hydraulically movable piston on which the rolling bearing is fixed by means of a holding element with the interposition of an annular spring element. About an adjustable piston axially movable bearings are used for example in clutches for use, there primarily in the form of Ausrücklageranordnungen. The piston is, for example, part of a concentric slave cylinder (CSC) which can be controlled to initiate the movement of the piston through the movement of the piston, thereby actuating the clutch. For this purpose, it is necessary to connect the rolling bearing with the piston. For this purpose, the use of a metal retaining ring is known, which at the end of the piston, this cross-over, is placed on the outside and snapped with a plurality of inwardly bent locking or snap lugs on the outside of the piston. At this metal retaining ring, an annular groove is formed on the upper side, into which an annular spring element engages in the assembly position and is fixed there, and which in turn engages over the roller bearing or a ring of the roller bearing. About this attack the rolling bearing is fixed to the retaining ring, which for this purpose has a corresponding circumferential shoulder which is immediately adjacent to the groove. The metal retaining ring thus serves on the one hand the connection of roller bearings and pistons, on the other hand, he carries the bearings directly themselves, so he must be interpreted accordingly.
Nicht nur ist die Herstellung dieses metallenen Halterings aufwändig, da einerseits seine Grundgeometrie einzuformen ist, andererseits die entsprechenden Schnappoder Rastzungen, auch die Montage ist relativ aufwändig. Denn im Rahmen der Montage ist zunächst der Haltering auf den Kolben aufzuschnappen, wonach das Wälzla- ger und das Federelement zu positionieren sind. Erst anschließend wird in einem Press- oder Bördelvorgang das obere Ende des Halterings umgebogen, um die Nut zu schließen und das Federelement und damit auch das Wälzlager festzulegen. Denn wenn die Nut bereits zuvor geschlossen wäre, könnte das Federelement respektive Wälzlager nicht angesetzt werden. Der Erfindung liegt damit das Problem zugrunde, eine Wälzlageranordnung der eingangs genannten Art anzugeben, bei der unter Verwendung eines einfacher ausgebildeten Halteelements eine sichere Lagerfixierung möglich ist. Not only is the production of this metal retaining ring complex, because on the one hand its basic geometry is to be shaped, on the other hand, the corresponding Schnappoder locking tongues, the assembly is relatively complex. During assembly, the retaining ring must first be snapped onto the piston, after which the roller bearing and the spring element are to be positioned. Only then is in a Pressing or flanging the upper end of the retaining ring bent to close the groove and set the spring element and thus the rolling bearing. Because if the groove would have been previously closed, the spring element or bearings could not be recognized. The invention is therefore based on the problem to provide a rolling bearing assembly of the type mentioned, in which using a simpler retaining element secure bearing fixation is possible.
Zur Lösung dieses Problems ist erfindungsgemäß vorgesehen, dass das To solve this problem, the invention provides that the
Halteelement ein hülsenartiger Haltering aus Kunststoff ist, der in der Montagestel- lung, in der er in den hohlzylindrischen Kolben eingeschoben ist, mit wenigstens einem an seinem unteren Ende radial nach außen abstehenden Rastelement in eine an der Innenfläche des Kolbens vorgesehene Rastaufnahme einschnappt, wobei der Haltering mit einem am oberen Ende radial nach außen abstehenden Ringflansch das ringförmige Federelement übergreift und gegen das Wälzlager drückt. Bei der erfindungsgemäßen Wälzlageranordnung ist ein sehr einfach ausgelegtes Halteelement in Form eines hülsenförmigen Halterings vorgesehen, der ein einfaches Kunststoffbauteil ist. Anders als beim bisher bekannten Stand der Technik wird dieser hülsenförmige Kunststoff-Haltering in den hohlzylindrischen Kolben geschoben. Der Haltering weist außenseitig wenigstens ein Rastelement auf, das leicht federnd ist, so dass es, wenn der Haltering in den hohlzylindrischen Kolben geschoben wird, leicht einfedern kann. Kolbenseitig ist an der Innenwand ebenfalls wenigstens eine Rastaufnahme vorgesehen, in die das Rastelement einschnappt, wenn die Montageendstellung erreicht ist. Zur Fixierung des Wälzlagers über das Federelement ist am anderen Ende des hülsenförmigen Halterings ein radial nach außen stehender Ringflansch vorgesehen, der das Federelement übergreift, worüber das Wälzlager fixiert wird. Hervorzuheben ist hierbei, dass das Wälzlager dabei direkt auf der Stirnseite des Kolben abgestützt ist, und nicht wie bisher im Stand der Technik am Halteelement selbst. Das heißt, dass bei der erfindungsgemäßen Wälzlageranordnung das Halteelement tatsächlich auch nur eine Haltefunktion hat, nicht aber eine Tragfunktion. Dies ermöglicht es, das Halteelement auch einfach zu konzipieren und insbesondere aus Kunststoff, vorzugsweise als einfaches Spritzgussbauteil, zu fertigen. Im Rahmen der Montage, wenn also das Wälzlager am Kolben zu fixieren ist, wird zunächst das Wälzlager kolbenseitig angesetzt, wonach das ringförmige Federelement angesetzt wird. Nun ist lediglich noch der hülsenförmige Kunststoff-Haltering in den Kolben einzuschieben, bis er die Montageendstellung erreicht, in der das Rast- element in der Rastaufnahme verschnappt. Diese hochfeste Verbindung garantiert eine sichere Fixierung des Wälzlagers, das über den Ringflansch und das Federelement gegen die Kolbenstirnseite gespannt ist. Holding element is a sleeve-like retaining ring made of plastic, which snaps in the mounting position, in which it is inserted into the hollow cylindrical piston with at least one at its lower end radially outwardly projecting locking element in a provided on the inner surface of the piston locking receptacle, wherein the Retaining ring with an upper end radially outwardly projecting annular flange engages over the annular spring element and presses against the roller bearing. In the rolling bearing assembly according to the invention a very simple designed retaining element is provided in the form of a sleeve-shaped retaining ring, which is a simple plastic component. Unlike the previously known prior art, this sleeve-shaped plastic retaining ring is pushed into the hollow cylindrical piston. The retaining ring has on the outside at least one latching element which is slightly resilient, so that it can easily deflect when the retaining ring is pushed into the hollow cylindrical piston. On the piston side, at least one latching receptacle is likewise provided on the inner wall, into which the latching element snaps when the final assembly position is reached. To fix the rolling bearing on the spring element, a radially outwardly annular flange is provided at the other end of the sleeve-shaped retaining ring, which engages over the spring element, about which the rolling bearing is fixed. It should be emphasized here that the rolling bearing is supported directly on the front side of the piston, and not as in the prior art on the holding element itself. That is, in the rolling bearing assembly according to the invention, the holding member actually has only one holding function, but not a support function , This makes it possible to easily design the retaining element and in particular of plastic, preferably as a simple injection-molded component to manufacture. As part of the assembly, so if the roller bearing is to be fixed to the piston, the roller bearing is first set on the piston side, after which the annular spring element is attached. Now only the sleeve-shaped plastic retaining ring is to be inserted into the piston until it reaches the final assembly position, in which the locking element snaps into the locking receptacle. This high-strength connection guarantees a secure fixation of the rolling bearing, which is stretched over the annular flange and the spring element against the piston end face.
Das Rastelement selbst kann als umlaufender Rastvorsprung ausgeführt sein, wobei der Haltering vorzugsweise wenigstens einen sich zumindest über einen Teil seiner Länge erstreckenden Schlitz aufweist. Während der Schlitz die hinreichende Federelastizität verleiht, dass also der Rastvorsprung beim Einschieben leicht einfedern und beim Erreichen der Montagestellung in die Raststellung ausfedern kann, ist über die Länge des Rastvorsprungs, der bis auf den wenigstens einen Schlitz vollständig umläuft, ein großflächiger Untergriff an der entsprechenden Rastaufnahme am Kolben gegeben, so dass eine großflächige, äußerst feste Verbindung erreicht wird. The latching element itself can be designed as a circumferential latching projection, wherein the retaining ring preferably has at least one slot extending over at least part of its length. While the slot gives the sufficient spring elasticity, so that the locking projection when inserting slightly spring and can rebound when reaching the mounting position in the locking position, over the length of the locking projection, which completely rotates except for at least one slot, a large undercut on the corresponding Locking record on the piston given so that a large area, extremely strong connection is achieved.
Selbstverständlich können auch mehrere solcher Schlitze vorgesehen sein, beispielsweise vier, so dass sich mehrere, beispielsweise vier, Federzungen ergeben, die jeweils einen Abschnitt des Rastvorsprungs tragen. Of course, a plurality of such slots may be provided, for example, four, so that several, for example four, spring tongues result, each carrying a portion of the locking projection.
Sofern jedoch der Rastvorsprung aufgrund des verwendeten Materials eine hinreichende Eigenelastizität aufweist, dass er sich beim Einschieben ausreichend verformt und wieder zurückschnappt, muss kein Schlitz vorgesehen werden. However, if the locking projection has a sufficient intrinsic elasticity due to the material used, that it deforms sufficiently upon insertion and snaps back again, no slot must be provided.
Um eine möglichst einfach konzipierte Rastaufnahme zu bilden, sieht eine In order to form a simply conceived catch receptacle, one sees
Weiterbildung der Erfindung vor, diese entweder als umlaufende Rastschulter oder in Form einzelner, äquidistant verteilter Rastschulterabschnitte auszubilden. Eine umlau- fende Rastschulter ermöglicht ein beliebiges Einsetzen des Halterings, unabhängig davon, ob er nun einen oder mehrere Schlitze aufweist. Denn an jeder Umfangstelle ist folglich eine Rastmöglichkeit gegeben. Sind einzelne, äquidistant verteilte Rastschulterabschnitte vorgesehen, so ist dies aus herstellungstechnischer Sicht hinsichtlich des Kolbens zweckmäßig, da ein Rastschulterabschnitt leichter zu entformen ist, als eine umlaufende Rastschulter, die ja einen umlaufenden Hinterschnitt darstellt. Der Haltering kann, wenn lediglich ein nahezu vollständig umlaufender Rastvorsprung gegeben ist, wiederum beliebig eingesteckt werden. Sind ausgezeichnete Federzungen gegeben, so ist es denkbar, zur Sicherstellung eines vollständigen Untergriffs den Haltering nur in einer bestimmten Stellung einstecken zu können. Dies ist letztlich abhängig davon, wie weit die einzelnen Rastschultern umlaufen respektive wie weit die einzelnen Federzungen bzw. deren Rastvorsprünge umlaufen. Further development of the invention to form this either as a circumferential latching shoulder or in the form of individual, equidistantly distributed latching shoulder sections. An encircling locking shoulder allows any insertion of the retaining ring, regardless of whether it has one or more slots. Because at each peripheral point is therefore given a rest opportunity. Are single, equidistantly distributed latching shoulder portions provided, this is from a manufacturing point of view in terms of the piston appropriate, as a locking shoulder portion is easier to demold, as a circumferential latching shoulder, which is indeed a circumferential undercut. The retaining ring can, if only a nearly completely circumferential latching projection is given, in turn be inserted as desired. Are excellent spring tongues given, it is conceivable to be able to insert the retaining ring only in a certain position to ensure a complete undercut. This is ultimately dependent on how far the individual latching shoulders rotate or how far the individual spring tongues or their latching projections rotate.
Zweckmäßigerweise ist der Außendurchmesser des Halterings im Bereich zwischen dem oder den Rastelementen und dem Ringflansch im Wesentlichen dem Innendurchmesser des Kolbens in dem Bereich, in dem sich Halterung und Kolben gege- nüberliegen, entsprechend ausgelegt. Dies deshalb, damit sichergestellt ist, dass der Haltering in der Montagestellung möglichst spielfrei, also wackelfrei, in dem Kolben aufgenommen ist. Selbstverständlich sollte eine minimale Durchmesserdifferenz gegeben sein, damit der Haltering eingeschoben werden kann. Expediently, the outer diameter of the retaining ring in the area between the locking element (s) and the annular flange is designed essentially corresponding to the inner diameter of the piston in the region in which the holder and piston lie opposite one another. This is why, in order to ensure that the retaining ring in the mounting position as possible without play, ie free of wobble, is received in the piston. Of course, a minimum diameter difference should be given so that the retaining ring can be inserted.
Wie bereits beschrieben, ist der Haltering erfindungsgemäß aus Kunststoff. Es bietet sich hier jeder Kunststoff an, der die gewünschten Festigkeitseigenschaften aufweist. Hierbei kommt es natürlich entscheidend auf den Einsatzzweck der Wälzlageranordnung an. Bevorzugt ist der Haltering wie beschrieben ein Spritzgussteil. As already described, the retaining ring according to the invention is made of plastic. It offers here any plastic, which has the desired strength properties. Of course, it is crucial to the purpose of the rolling bearing assembly. Preferably, the retaining ring is as described an injection molded part.
Der Kolben selbst ist wie bereits beschrieben bevorzugt Teil eines konzentrischen Nehmerzylinders, häufig auch CSC (concentric slave cylinder) genannt. Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben. Es zeigen: As already described, the piston itself is preferably part of a concentric slave cylinder, frequently also called CSC (concentric slave cylinder). An embodiment of the invention is illustrated in the drawing and will be described in more detail below. Show it:
Figur 1 eine erfindungsgemäße Wälzlageranordnung in einer Explosionsdarstellung, 1 shows a rolling bearing assembly according to the invention in an exploded view,
Figur 2 eine Prinzipdarstellung mit drei Schnittansichten, die den Montagevorgang des Halterings zeigen, Figur 3 eine Schnittansicht durch eine Wälzlageranordnung einer zweiten Figure 2 is a schematic diagram with three sectional views showing the assembly process of the retaining ring, Figure 3 is a sectional view through a rolling bearing assembly of a second
Ausführungsform, Figur 4 eine Perspektivansicht eines Halterings einer weiteren Ausführungsform, embodiment, FIG. 4 shows a perspective view of a retaining ring of a further embodiment,
Figur 5 eine Schnittansicht durch eine Wälzlageranordnung und Verwendung des Halterings aus Figur 4, und Figure 5 is a sectional view through a rolling bearing assembly and use of the retaining ring of Figure 4, and
Figur 6 eine Teilperspektivansicht im Schnitt eines Kolbens einer weiteren Figure 6 is a partial perspective view in section of a piston of another
Ausführungsform. Embodiment.
Figur 1 zeigt eine erfindungsgemäße Wälzlageranordnung 1 , umfassend das Figure 1 shows a rolling bearing assembly 1 according to the invention, comprising the
Wälzlager 2, im gezeigten Beispiel ein Schrägkugellager mit (siehe Figur 2) einem Innenring 3, einem Außenring 4 sowie dazwischen laufenden Wälzkörpern in Form von Kugeln 5. Vorgesehen ist ferner ein ringförmiges Federelement 6, hier eine Teller- feder, die den nach innen gerichteten Radialflansch 7 des Innenrings 3 übergreift, siehe wiederum Figur 2. Rolling 2, in the example shown, an angular contact ball bearing with (see Figure 2) an inner ring 3, an outer ring 4 and rolling elements running therebetween in the form of balls 5. Also provided is an annular spring element 6, here a plate spring, the inwardly directed Radial flange 7 of the inner ring 3 overlaps, see again Figure 2.
Des Weiteren ist Teil der erfindungsgemäßen Wälzlageranordnung ein Kolben 8, an dem das Wälzlager 2 zu befestigen ist, wozu ein Halteelement 9 in Form eines hül- senförmigen Halterings 10 dient, der ein Kunststoffbauteil ist. Am Haltering 10 ist im gezeigten Beispiel radial umlaufend ein Rastelement 1 1 in Form eines radial nach außen stehenden Rastvorsprungs 12 vorgesehen. Dieser dient zum Verrasten hinter einer einen Rastabschnitt bildenden, im gezeigten Beispiel ebenfalls umlaufenden Rastschulter 13, die an der Innenseite 14 des Kolbens 8 ausgebildet ist. Der Haltering 10 ist aus Kunststoff, so dass eine gewisse Flexibilität re- spektive Elastizität im Bereich des Rastvorsprungs 12 gegeben ist, so dass dieser Bereich leicht einfedern kann. Furthermore, part of the rolling bearing arrangement according to the invention is a piston 8, to which the roller bearing 2 is to be fastened, for which purpose a retaining element 9 in the form of a sleeve-shaped retaining ring 10 is used, which is a plastic component. On the retaining ring 10, a locking element 1 1 in the form of a radially outwardly standing locking projection 12 is provided in the example shown radially circumferentially. This is used for locking behind a latching portion forming, in the example shown also circumferential latching shoulder 13 which is formed on the inner side 14 of the piston 8. The retaining ring 10 is made of plastic, so that a certain flexibility is given to elastic elasticity in the area of the latching projection 12, so that this area can easily deflect.
Figur 2 zeigt in anschaulicher Darstellung den Montagevorgang. Figure 2 shows an illustrative representation of the assembly process.
Zunächst wird das Wälzlager 2 am Kolben 8 angesetzt. Hierzu wird das Wälzlager 2 mit dem Radialflansch 7 des Innenrings 3 auf die obere Stirnfläche 15 des Kolbens 8 gesetzt. Hiernach wird das Federelement 6 aufgelegt. Nun wird, siehe Figur 2a), der hülsenförmige Kunststoff-Haltering 10 von oben eingesteckt. Am vorlaufenden Ende ist der Rastvorsprung 10. Der Haltering 10 wird nun, siehe Figuren b) und c), immer weiter in den Kolben 8 hineingeschoben, der Rastvorsprung bzw. der ihn tragende Ringbereich verformt sich leicht, wobei der Außendurchmesser des Halterings 10 im Wesentlichen dem Innendurchmesser des Kolbens 8 im oberen Bereich, also im Be- reich zwischen der Stirnfläche 15 und der Rastschulter 13 entspricht. Daraus ergibt sich eine sichere Führung und verkippungsfreie Aufnahme. First, the rolling bearing 2 is attached to the piston 8. For this purpose, the rolling bearing 2 is set with the radial flange 7 of the inner ring 3 on the upper end face 15 of the piston 8. After that, the spring element 6 is placed. Now, see Figure 2a), the sleeve-shaped plastic retaining ring 10 is inserted from above. At the leading end is the locking projection 10. The retaining ring 10 is now, see Figures b) and c), pushed further and further into the piston 8, the locking projection and the annular region carrying it deforms easily, the outer diameter of the retaining ring 10 is substantially the inner diameter of the Piston 8 in the upper region, ie in the area between the end face 15 and the latching shoulder 13 corresponds. This results in a secure leadership and tilt-free recording.
Mit Erreichen der Montageendstellung, siehe Figur 2c), erreicht auch der Upon reaching the final assembly position, see Figure 2c), also reaches the
Rastvorsprung 12 den Bereich der Rastschulter 13, hinter welche er sodann schnappt, siehe Figur 2c). Der Rastvorsprung 12 ist dann also in der Nut 16 aufge- nommen, die unterhalb der Rastschulter 13 ausgebildet ist. Hierüber ist eine sichere Verankerung des Halterings 10 im Kolben 8 gegeben. Gleichzeitig übergreift ein Ringflansch 17, der am oberen Ende des Halterings 10 ausgebildet ist, das Federelement 6, siehe wiederum Figur 2c). Hierüber wird das Federelement 6 deformiert und fest auf den Radialflansch 7 des Innenrings 3 gedrückt, der hierüber gegen die Stirnfläche 15 des Kolbens 8 gepresst wird. Detent projection 12 the region of the locking shoulder 13, behind which he then snaps, see Figure 2c). The latching projection 12 is then received in the groove 16, which is formed below the latching shoulder 13. This is a safe anchoring of the retaining ring 10 in the piston 8 is given. At the same time an annular flange 17, which is formed at the upper end of the retaining ring 10, engages over the spring element 6, see again Figure 2c). Over this, the spring element 6 is deformed and pressed firmly onto the radial flange 7 of the inner ring 3, which is pressed against the end face 15 of the piston 8.
Figur 3 zeigt in Form einer Schnittansicht eine weitere Ausgestaltung einer erfindungsgemäßen Wälzlageranordnung 1 , wobei in dieser Figur wie auch in den weiteren Figuren für gleiche Bauteile gleiche Bezugszeichen verwendet werden. Auch hier kommt ein hülsenförmiger Kunststoff-Haltering 10 zum Einsatz, der im Kolben 8 verschnappt ist und über dessen Ringflansch 17 das Wälzlager 2 über das Federelement 6 fixiert ist. Anders als bei der Ausgestaltung gemäß der Figuren 1 und 2 befindet sich hier jedoch die Rastschulter 13 am unteren Ende des Kolbens 8, sie ist durch eine einfache Ausdrehung realisiert. Der Rastvorsprung 12 verschnappt auch hier hinter der Rastschulter 13, die Befestigung erfolgt in gleicher Weise wie bezüglich der Figuren 1 und 2 beschrieben. Jedoch ist hier der Kolben einfacher herzustellen, da die Nut 16 nicht separat über einen Einstich ausgebildet werden muss, sondern die Rastschulter 13 durch die einfache Ausdrehung ausgebildet werden kann. Figure 3 shows in the form of a sectional view of a further embodiment of a rolling bearing assembly 1 according to the invention, wherein in this figure as well as in the other figures for like components like reference numerals are used. Again, a sleeve-shaped plastic retaining ring 10 is used, which is snapped in the piston 8 and via the annular flange 17, the roller bearing 2 is fixed by the spring element 6. Unlike in the embodiment according to Figures 1 and 2, however, here is the locking shoulder 13 at the lower end of the piston 8, it is realized by a simple rotation. The latching projection 12 also snaps behind the locking shoulder 13, the attachment is carried out in the same manner as described with reference to Figures 1 and 2. However, here the piston is easier to manufacture, since the groove 16 does not have to be formed separately via a recess, but the locking shoulder 13 can be formed by the simple rotation.
Die Figuren 4 und 5 zeigen eine weitere Ausführungsform eines verwendbaren Halterings 10 in Hülsenform, wiederum aus Kunststoff. Bei dieser Ausgestaltung weist der Haltering 10 neben dem Ringflansch 17 mehrere Längsschlitze 18 auf, im gezeigten Beispiel sind vier solcher Längsschlitze 18 vorgesehen, die sich ca. über die Hälf- te seiner axialen Länge erstrecken. Hierüber werden insgesamt vier einzelne Federzungen 19 ausgebildet, wobei jede Federzunge 19 einen Rastvorsprung 12 trägt. Auch hier läuft also der Rastvorsprung letztlich komplett um, lediglich unterbrochen über die Längsschlitze 18, die der einzelnen Federzungen 19 und deren Rastvor- sprung definieren. Figures 4 and 5 show another embodiment of a usable retaining ring 10 in sleeve form, again made of plastic. In this embodiment, the retaining ring 10 in addition to the annular flange 17 a plurality of longitudinal slots 18, in the example shown, four such longitudinal slots 18 are provided, which extend approximately over the half te extend its axial length. About this four total spring tongues 19 are formed, each spring tongue 19 carries a locking projection 12. In this case too, therefore, the latching projection ultimately completely revolves, only interrupted by the longitudinal slots 18 which define the individual spring tongues 19 and their latching projection.
Die Montage erfolgt in gleicher Weise wie bezüglich der Figuren 1 und 2 beschrieben, eine entsprechende Schnittansicht ist in Figur 5 gezeigt, wobei dort exemplarisch ein Kolben 8 gemäß Figur 3 Verwendung findet. The assembly is carried out in the same manner as described with reference to Figures 1 and 2, a corresponding sectional view is shown in Figure 5, where there is exemplarily a piston 8 according to Figure 3 use.
Schließlich zeigt Figur 6 eine geschnittene Innenansicht eines Kolbens 8 einer weiteren Ausführungsform. Der Grundaufbau entspricht dem Kolben 8 aus den Figuren 1 und 2, jedoch ist hier keine umlaufende Rastschulter 13 vorgesehen, sondern mehrere Rastschulterabschnitte 13a, die nur einen gewissen Umfangsabschnitt umlaufen. Diese Ausbildung ist im Kunststoffspritzprozess mitunter einfacher herzustellen als eine umlaufende Rastschulter. Gleichwohl kann der umlaufende Rastvor- sprung des Halterings 10 gemäß der Figuren 1 und 2 oder können die einzelnenFinally, FIG. 6 shows a sectioned internal view of a piston 8 of a further embodiment. The basic structure corresponds to the piston 8 of Figures 1 and 2, but here no circumferential latching shoulder 13 is provided, but a plurality of latching shoulder portions 13a, which rotate only a certain peripheral portion. This training is sometimes easier to produce in the plastic injection process as a circumferential detent shoulder. Nevertheless, the peripheral detent projection of the retaining ring 10 according to FIGS. 1 and 2 or may be the individual ones
Rastvorsprünge des Halterings 10 aus Figur 4 ohne weiteres auch hinter diesen kürzer bemessenen Rastschulterabschnitten 13a verrasten. Locking projections of the retaining ring 10 of Figure 4 readily lock behind these shorter sized locking shoulder portions 13a.
Der Kolben 8, unabhängig davon, wie er nun konkret aufgebaut ist, ist bevorzugt Teil eines konzentrischen Nehmerzylindern, er kann aber auch Teil einer anderen Stell- elementkonfiguration sein. The piston 8, irrespective of how it is concretely constructed, is preferably part of a concentric slave cylinder, but it can also be part of another actuator element configuration.
Bezuqszeichenliste LIST OF REFERENCES
1 Wälzlageranordnung 1 rolling bearing assembly
2 Wälzlager  2 rolling bearings
3 Innenring  3 inner ring
4 Außenring  4 outer ring
5 Kugel  5 ball
6 ringförmiges Federelement  6 annular spring element
7 Radialflansch  7 radial flange
8 Kolben  8 pistons
9 Halteelement  9 retaining element
10 hülsenförmiger Haltering  10 sleeve-shaped retaining ring
1 1 Rastelement  1 1 locking element
12 Rastvorsprung  12 locking projection
13 Rastschulter  13 snap shoulder
13a Rastschulterabschnitt  13a latching shoulder section
14 Innenseite  14 inside
15 Stirnfläche  15 face
16 Nut  16 groove
17 Ringflansch  17 ring flange
18 Längsschlitz  18 longitudinal slot
19 Federzunge  19 spring tongue

Claims

Patentansprüche claims
Wälzlageranordnung, insbesondere Ausrücklageranordnung, umfassend ein Wälzlager sowie einen das Wälzlager tragenden, vorzugsweise hydraulisch bewegbaren Kolben, an dem das Wälzlager mittels eines Halteelements unter Zwischenschaltung eines ringförmigen Federelements fixiert ist, dadurch gekennzeichnet, dass das Halteelement (9) ein hülsen- förmiger Haltering (10) aus Kunststoff ist, der in der Montagestellung, in der er in den hohlzylindrische Kolben (8) eingeschoben ist, mit wenigstens einem an seinem unteren Ende radial nach außen abstehenden Rastelement (1 1 ) in eine an der Innenfläche (14) des Kolbens (8) vorgesehene Rastaufnahme (12) einschnappt, wobei der Haltering (10) mit einem am oberen Ende radial nach außen abstehenden Ringflansch (17) das ringförmige Federelement (6) übergreift und gegen das Wälzlager (2) drückt. Rolling bearing assembly, in particular Ausrücklageranordnung comprising a rolling bearing and a rolling bearing bearing, preferably hydraulically movable piston to which the rolling bearing is fixed by means of a holding element with the interposition of an annular spring element, characterized in that the holding element (9) has a sleeve-shaped retaining ring (10 ) is made of plastic, which in the mounting position, in which it is inserted into the hollow cylindrical piston (8), with at least one at its lower end radially outwardly projecting locking element (1 1) in one of the inner surface (14) of the piston ( 8) provided latching receptacle (12) snaps, wherein the retaining ring (10) engages over the annular spring element (6) with a radially outwardly projecting annular flange (17) and against the rolling bearing (2).
Wälzlageranordnung nach Anspruch 1 , dadurch gekennzeichnet, dass das Rastelement (1 1 ) als umlaufender Rastvorsprung (12) ausgeführt ist, wobei der Haltering (10) vorzugsweise wenigstens einen sich zumindest über einen Teil seiner Länge erstreckenden Schlitz (18) aufweist. Rolling bearing assembly according to claim 1, characterized in that the latching element (1 1) is designed as a circumferential latching projection (12), wherein the retaining ring (10) preferably at least over at least a part of its length extending slot (18).
Wälzlageranordnung nach Anspruch 2, dadurch gekennzeichnet, dass mehrere äquidistant verteilt angeordnete Schlitze (18), vorzugsweise vier Schlitze (18), vorgesehen sind. Rolling arrangement according to claim 2, characterized in that a plurality of equidistantly distributed slots (18), preferably four slots (18) are provided.
Wälzlageranordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Rastaufnahme als umlaufende Rastschulter (12) oder in Form einzelner, äquidistant verteilter Rastschulterabschnitte (13a) ausgebildet ist. Rolling bearing arrangement according to one of the preceding claims, characterized in that the latching receptacle is formed as a circumferential latching shoulder (12) or in the form of individual, equidistantly distributed latching shoulder sections (13a).
Wälzlageranordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Außendurchmesser des Halterings (10) im Bereich zwischen dem oder den Rastelemente (1 1 ) und dem Ringflansch (17) im Wesentlichen dem Innendurchmesser des Kolbens (8) entspricht. Rolling bearing arrangement according to one of the preceding claims, characterized in that the outer diameter of the retaining ring (10) in the region between the one or more locking elements (1 1) and the annular flange (17) substantially corresponds to the inner diameter of the piston (8).
Wälzlageranordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Haltering (10) ein Spritzgussteil ist. Rolling bearing arrangement according to one of the preceding claims, characterized in that the retaining ring (10) is an injection molded part.
7. Wälzlageranordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Kolben (8) Teil eines konzentrischen Nehmerzylinders ist 7. Rolling arrangement according to one of the preceding claims, characterized in that the piston (8) is part of a concentric slave cylinder
PCT/EP2013/050439 2012-01-17 2013-01-11 Roller bearing arrangement, in particular release bearing arrangement WO2013107688A1 (en)

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DE102014011748A1 (en) * 2014-08-07 2016-02-11 Audi Ag Securing part for a shaft
DE102017101925A1 (en) 2017-02-01 2018-08-02 Schaeffler Technologies AG & Co. KG Sliding sleeve for a release bearing assembly
DE102017129437A1 (en) * 2017-12-11 2019-06-13 Schaeffler Technologies AG & Co. KG Release device for a friction clutch

Citations (4)

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Publication number Priority date Publication date Assignee Title
US4815867A (en) * 1987-09-23 1989-03-28 Federal-Mogul Corporation Side assembled clip for self-aligning bearing
FR2824881A1 (en) * 2001-05-21 2002-11-22 Valeo Motor vehicle clutch release bearing comprises axially movable piston and ring integral with ball race hooked on piston
US20050011717A1 (en) * 2003-06-18 2005-01-20 Benoit Arnault Clutch release bearing
EP2390522A2 (en) * 2010-05-27 2011-11-30 Schaeffler Technologies AG & Co. KG Release bearing assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4815867A (en) * 1987-09-23 1989-03-28 Federal-Mogul Corporation Side assembled clip for self-aligning bearing
FR2824881A1 (en) * 2001-05-21 2002-11-22 Valeo Motor vehicle clutch release bearing comprises axially movable piston and ring integral with ball race hooked on piston
US20050011717A1 (en) * 2003-06-18 2005-01-20 Benoit Arnault Clutch release bearing
EP2390522A2 (en) * 2010-05-27 2011-11-30 Schaeffler Technologies AG & Co. KG Release bearing assembly

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