WO2011018320A2 - Bearing arrangement for a motor vehicle transmission, having improved lubricant supply - Google Patents

Bearing arrangement for a motor vehicle transmission, having improved lubricant supply Download PDF

Info

Publication number
WO2011018320A2
WO2011018320A2 PCT/EP2010/060653 EP2010060653W WO2011018320A2 WO 2011018320 A2 WO2011018320 A2 WO 2011018320A2 EP 2010060653 W EP2010060653 W EP 2010060653W WO 2011018320 A2 WO2011018320 A2 WO 2011018320A2
Authority
WO
WIPO (PCT)
Prior art keywords
inner ring
shaft
recesses
bearing arrangement
rolling elements
Prior art date
Application number
PCT/EP2010/060653
Other languages
German (de)
French (fr)
Other versions
WO2011018320A3 (en
Inventor
Mathias Cuijpers
Meike Rohrbeck
Original Assignee
Zf Friedrichshafen Ag
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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2011018320A2 publication Critical patent/WO2011018320A2/en
Publication of WO2011018320A3 publication Critical patent/WO2011018320A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
    • F16C33/6677—Details of supply of the liquid to the bearing, e.g. passages or nozzles from radial inside, e.g. via a passage through the shaft and/or inner ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0478—Synchromesh devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/44—Needle bearings
    • F16C19/48—Needle bearings with two or more rows of needles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/61—Toothed gear systems, e.g. support of pinion shafts

Definitions

  • the invention relates to a bearing assembly for a motor vehicle transmission, with an inner ring which is mounted on a shaft, in particular a gear shaft, and on an outer diameter several rolling elements leads that allow a relative rotation between the inner ring and an outer member, in particular a loose wheel, wherein the inner ring and the shaft each have recesses for lubricant supply.
  • bearing arrangements are often used by means of the rolling elements of the respective storage targeted lubricant can be supplied.
  • bearings are designed in some applications such that adjacent parts can be supplied via the lubricant of the rolling elements of the bearing assembly with.
  • a bearing assembly which has an inner ring which is mounted on a shaft.
  • This inner ring carries on its outer diameter a plurality of rolling elements, which allow a relative rotation between an outer element in the form of an outer ring and the inner ring, and thus also the shaft.
  • a supply of the rolling elements with lubricant is achieved in this case from the outside over the axial edge regions of the inner ring and the outer member.
  • both the inner ring and the shaft each have recesses.
  • this recess is in the form of a radial bore, which is placed centrally in the axial direction and can be supplied via which lubricant of the rolling elements of a groove in the shaft. Over this groove, the lubricant then passes in the further course to the respective shaft component.
  • the bearing arrangement of the prior art has the disadvantage that a supply of lubricant to the adjacent component takes place via the centrally placed radial bore. The lubricant must therefore first reach the center of the bearing and is exposed to high displacement losses by the rolling elements, which increases the friction losses of the bearing assembly.
  • a lubricant supply of the rolling elements from the outside axially in certain applications, for example in the field of synchronizations of motor vehicle transmissions, due to the prevailing Baumraum conditions usually difficult.
  • This bearing arrangement should in this case be suitable in particular for use in the area of synchronization components of a motor vehicle transmission.
  • the invention includes the technical teaching that the recesses on the inner ring in the form of, at axial ends of the inner ring pronounced and extending in the radial direction recesses, which are distributed over the circumference of the inner ring and via which lubricant from the recesses of the shaft to the rolling elements and adjacent components can be fed.
  • recesses in this case recesses are meant at the axial ends of the inner ring, which are composed in cross section of one or more contours with curved and / or straight segments.
  • the recesses in cross section each have a curved course.
  • the shaft has on an outer diameter and in the region of the axial ends of the inner ring in each case via a circumferential groove, in which open respectively associated recesses of the shaft.
  • Achieve lubricant, even a small number of recesses in the shaft can provide multiple indentations in the inner ring.
  • the recesses are present on the shaft in the form of radially extending bores, which are each arranged in the region of the axial ends of the inner ring and with an axial bore in the middle of the shaft in communication. This allows a very compact supply of lubricant to the inner ring can be achieved.
  • the inner ring is made together with the indentations as a forging.
  • this makes it possible to manufacture the inner ring at low cost.
  • the rolling elements are arranged in two rows. As a result, the load capacity of the storage can be significantly increased.
  • the neighboring components are synchronizing rings of a synchronization.
  • the inventive design of the bearing assembly reliable cooling and lubrication of the synchronizer rings and thus a sufficient lifetime of the synchronization can be ensured.
  • Fig. 1 is a sectional view of the bearing assembly according to the invention.
  • FIG. 2 shows a perspective individual view of a shaft of the bearing arrangement according to the invention
  • FIG. 3 shows a perspective individual view of an inner ring
  • Fig. 4 is a perspective view of the assembly of the bearing assembly according to the invention.
  • Fig. 1 is a sectional view of the bearing assembly according to the invention can be seen.
  • This has an inner ring 1, which is mounted on a shaft 2, in this case a gear shaft, rotationally fixed and on an outer diameter several rolling elements 3 leads.
  • the rolling elements 3 are arranged in two rows, and guided in a common cage 4 and allow a relative rotation between the inner ring 1 and a loose wheel 5, which is arranged coaxially to the shaft 2.
  • a - here only partially shown - Synchronization 6 is provided, upon actuation in the art known manner a positive coupling of the idler gear 5 can be achieved with the shaft 2.
  • the shaft 2 has an axial bore 7, from which a plurality of radially extending bores 8 branch off.
  • the holes 8 are each arranged in the region of the axial ends of the inner ring 1 and open in the region of the outer diameter of the shaft 2 in each case in circumferential grooves 9A and 9B, the course of which is apparent in particular from the perspective view of the shaft 2 in Fig. 2.
  • the subsidized in this area lubricant can then pass from the grooves 9A and 9B on the recesses 10 on the inner ring 1 on the one hand between the cage 4 and the respective rolling elements 3 and on the other also the adjacent synchronization 6 are supplied. Due to the large cross sections of the holes 8, as well as due to the design of the grooves 9A and 9B and the recesses 10, this can be done with a small Flow resistance and off-center of the inner ring 1 happen so that low friction losses occur in the bearing assembly, but at the same time sufficient lubricant supply to the rolling elements 3 and the synchronization 6 is ensured.
  • the recesses 10 are distributed at the axial ends of the inner ring 1 and equidistantly over the circumference. Furthermore, from this, the curved course of the recesses 10 can be seen, whereby on the one hand a large flow area is created, but at the same time a sufficient contact surface of the inner ring 1 remains on the shaft 2, so that too high surface pressures can be prevented in this area.
  • FIG. 4 shows the assembly of the bearing assembly according to the invention, in which case both the idler gear 5 and the synchronization 6 is not shown.
  • each hole 8 is positioned centrally to a recess 10 on the inner ring 1, so that an optimal flow of lubricant to the rolling elements 3 is made possible.
  • the lubricant must travel only a very short distance from the bore 8 to the rolling elements 3.
  • the lubricant can reach this area via the grooves 9A and 9B, so that no alignment of the inner ring 1 with the shaft 2 during assembly is necessary.
  • the bearing arrangement By means of the bearing arrangement according to the invention, it is thus possible to ensure a sufficient supply of lubricant and cooling of the area of the rolling bodies 3 as well as components of the synchronization 6 and at the same time cause low friction losses during storage. Since this can be done without additional space requirements, the bearing assembly is particularly for applications in the field of motor vehicle zeugsetriebes, such as a manual or dual-clutch transmission, but also in planetary stages of an automatic transmission, suitable.

Landscapes

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

Abstract

The invention relates to a bearing arrangement for a motor vehicle transmission, having an inner ring (1) placed on a shaft (2), particularly a transmission shaft, and guiding a plurality of rolling elements (3) on an outer diameter, allowing relative rotation between the inner ring (1) and an outer element, in particular a freewheel (5), wherein the inner ring (1) and the shaft (2) each have recesses for lubricant supply, wherein the recesses on the inner ring (1) are further present in the form of impressions (10) extending in the radial direction and distributed over the circumference of the inner ring (1) and by means of which lubricant can be fed from the recesses of the shaft (2) to the rolling elements (3) and to the adjacent components.

Description

Laqeranordnunq für ein Kraftfahrzeuqqetriebe, mit verbesserter  Stock arrangement for a motor vehicle transmission, with improved
Schmiermittelversorqunq  Schmiermittelversorqunq
Die Erfindung betrifft eine Lageranordnung für ein Kraftfahrzeuggetriebe, mit einem Innenring, welcher auf einer Welle, insbesondere einer Getriebewelle, aufgesetzt ist und auf einem Außendurchmesser mehrere Wälzkörper führt, die eine Relativrotation zwischen dem Innenring und einem äußeren Element, insbesondere einem Losrad, zulassen, wobei der Innenring und die Welle jeweils über Ausnehmungen zur Schmiermittelversorgung verfügen. The invention relates to a bearing assembly for a motor vehicle transmission, with an inner ring which is mounted on a shaft, in particular a gear shaft, and on an outer diameter several rolling elements leads that allow a relative rotation between the inner ring and an outer member, in particular a loose wheel, wherein the inner ring and the shaft each have recesses for lubricant supply.
Bei Lageranordnungen kommen häufig Systeme zum Einsatz, mittels der den Wälzkörpern der jeweiligen Lagerung gezielt Schmiermittel zugeführt werden kann. Des Weiteren sind Lagerungen bei manchen Anwendungen derart gestaltet, dass auch benachbart liegende Teile über das Schmiermittel der Wälzkörper der Lageranordnung mit versorgt werden können. In bearing arrangements systems are often used by means of the rolling elements of the respective storage targeted lubricant can be supplied. Furthermore, bearings are designed in some applications such that adjacent parts can be supplied via the lubricant of the rolling elements of the bearing assembly with.
Aus der DE 10 2005 001 839 A1 ist eine Lageranordnung bekannt, die über einen Innenring verfügt, welcher auf einer Welle aufgesetzt ist. Dieser Innenring führt auf seinem Außendurchmesser mehrere Wälzkörper, die eine Relativrotation zwischen einem äußeren Element in Form eines Außenrings und dem Innenring, und damit auch der Welle ermöglichen. Eine Versorgung der Wälzkörper mit Schmiermittel wird in diesem Fall von außen über die axialen Randbereiche des Innenrings und des äußeren Elements erreicht. Um allerdings zusätzlich eine benachbarte Wellenkomponente mit Schmiermittel zu versorgen, verfügen sowohl der Innenring als auch die Welle jeweils über Ausnehmungen. Im Falle des Innenrings liegt diese Ausnehmung in Form einer Radialbohrung vor, welche in axialer Richtung mittig platziert ist und über welche Schmiermittel der Wälzkörper einer Nut in der Welle zugeführt werden kann. Über diese Nut gelangt das Schmiermittel im weiteren Verlauf dann zu der jeweiligen Wellenkomponente. Die Lageranordnung des Standes der Technik weist jedoch den Nachteil auf, dass eine Schmiermittelversorgung der benachbarten Komponente über die mittig platzierte Radialbohrung erfolgt. Das Schmiermittel muss also zunächst zur Mitte der Lagerung gelangen und wird hierbei hohen Verdrängungsverlusten durch die Wälzkörper ausgesetzt, was die Reibungsverluste der Lageranordnung erhöht. Zudem ist eine Schmiermittelversorgung der Wälzkörper von axial außen bei bestimmten Anwendungen, beispielsweise im Bereich von Synchronisationen von Kraftfahrzeuggetrieben, aufgrund der vorherrschenden Baumraumbedingungen zumeist schwierig. From DE 10 2005 001 839 A1 discloses a bearing assembly is known which has an inner ring which is mounted on a shaft. This inner ring carries on its outer diameter a plurality of rolling elements, which allow a relative rotation between an outer element in the form of an outer ring and the inner ring, and thus also the shaft. A supply of the rolling elements with lubricant is achieved in this case from the outside over the axial edge regions of the inner ring and the outer member. However, to additionally supply an adjacent shaft component with lubricant, both the inner ring and the shaft each have recesses. In the case of the inner ring, this recess is in the form of a radial bore, which is placed centrally in the axial direction and can be supplied via which lubricant of the rolling elements of a groove in the shaft. Over this groove, the lubricant then passes in the further course to the respective shaft component. However, the bearing arrangement of the prior art has the disadvantage that a supply of lubricant to the adjacent component takes place via the centrally placed radial bore. The lubricant must therefore first reach the center of the bearing and is exposed to high displacement losses by the rolling elements, which increases the friction losses of the bearing assembly. In addition, a lubricant supply of the rolling elements from the outside axially in certain applications, for example in the field of synchronizations of motor vehicle transmissions, due to the prevailing Baumraum conditions usually difficult.
Es ist daher die Aufgabe der vorliegenden Erfindung, eine Lageranordnung zur Verfügung zu stellen, bei welcher eine Schmiermittelversorgung der Wälzkörper, sowie benachbarter Komponenten sichergestellt ist, gleichzeitig aber Reibungsverluste der Lagerung möglichst gering ausfallen. Diese Lageranordnung sollte hierbei insbesondere für die Anwendung im Bereich von Synchronisationskomponenten eines Kraftfahrzeuggetriebes geeignet sein. It is therefore an object of the present invention to provide a bearing assembly available, in which a lubricant supply of the rolling elements, as well as adjacent components is ensured, but simultaneously minimize friction losses of storage. This bearing arrangement should in this case be suitable in particular for use in the area of synchronization components of a motor vehicle transmission.
Diese Aufgabe wird ausgehend vom Oberbegriff des Anspruchs 1 in Verbindung mit dessen kennzeichnenden Merkmalen gelöst. Die darauf folgenden, abhängigen Ansprüche geben jeweils vorteilhafte Weiterbildungen der Erfindung wieder. This object is achieved on the basis of the preamble of claim 1 in conjunction with its characterizing features. The subsequent dependent claims give each advantageous embodiments of the invention.
Die Erfindung umfasst die technische Lehre, dass die Ausnehmungen am Innenring in Form von, an axialen Enden des Innenrings ausgeprägten und sich in radialer Richtung erstreckenden Einformungen vorliegen, die über den Umfang des Innenrings verteilt sind und über welche Schmiermittel aus den Ausnehmungen der Welle den Wälzkörpern und benachbarten Komponenten zuführbar ist. The invention includes the technical teaching that the recesses on the inner ring in the form of, at axial ends of the inner ring pronounced and extending in the radial direction recesses, which are distributed over the circumference of the inner ring and via which lubricant from the recesses of the shaft to the rolling elements and adjacent components can be fed.
Dadurch, dass die Einformungen, über welche das Schmiermittel zu den Wälzkörpern und den benachbarten Komponenten der Lagerung gelangen kann, an axialen Enden des Innenrings ausgeprägt sind, muss das Schmiermittel nicht zunächst durch den Bereich der Wälzkörper hindurchgeführt werden. Dementsprechend können die Verdrängungsverluste innerhalb der Lagerung deutlich vermindert werden. Dabei kann gleichzeitig eine ausreichend große Auflagefläche an axialen Enden des Innenrings garantiert und somit zu hohe Flächenpressungen in diesem Bereich verhindert werden. Characterized in that the recesses, get over which the lubricant to the rolling elements and the adjacent components of the storage can, are pronounced at axial ends of the inner ring, the lubricant does not have to be first passed through the region of the rolling elements. Accordingly, the displacement losses can be significantly reduced during storage. At the same time a sufficiently large contact surface at the axial ends of the inner ring can be guaranteed and thus too high surface pressures can be prevented in this area.
Mit dem Begriff „Einformungen" sind hierbei Ausnehmungen an den axialen Enden des Innenrings gemeint, welche sich im Querschnitt aus einer oder mehreren Konturen mit gebogenen und/oder geraden Segmenten zusammensetzen. The term "recesses" in this case recesses are meant at the axial ends of the inner ring, which are composed in cross section of one or more contours with curved and / or straight segments.
Gemäß einer Ausführungsform der Erfindung weisen die Einformungen im Querschnitt jeweils einen gewölbten Verlauf auf. Mittels einer derartigen Ausgestaltung der Einformungen des Innenrings kann der Strömungswiderstand in diesem Bereich und damit auch die Schmiermittelversorgung der Wälzkörper und der benachbarten Komponenten deutlich verbessert werden. According to one embodiment of the invention, the recesses in cross section each have a curved course. By means of such a configuration of the recesses of the inner ring of the flow resistance in this area and thus also the supply of lubricant to the rolling elements and the adjacent components can be significantly improved.
In Weiterbildung der Erfindung verfügt die Welle auf einem Außendurchmesser und im Bereich der axialen Enden des Innenrings jeweils über eine umlaufende Nut, in welche jeweils zugeordnete Ausnehmungen der Welle einmünden. Dies hat den Vorteil, dass das Schmiermittel somit zunächst über die Ausnehmungen der Welle in die jeweilige Nut und von da aus über die Einformungen zu den Wälzkörpern und dem benachbarten Komponenten gelangen kann. Hierdurch lässt sich eine gleichmäßigere Verteilung des In a further development of the invention, the shaft has on an outer diameter and in the region of the axial ends of the inner ring in each case via a circumferential groove, in which open respectively associated recesses of the shaft. This has the advantage that the lubricant can thus first pass through the recesses of the shaft in the respective groove and from there via the indentations to the rolling elements and the adjacent components. This allows a more even distribution of the
Schmiermittels erreichen, wobei schon eine kleine Anzahl an Ausnehmungen in der Welle mehrere Einformungen im Innenring versorgen kann. Achieve lubricant, even a small number of recesses in the shaft can provide multiple indentations in the inner ring.
Es ist eine weitere Ausgestaltung der Erfindung, dass die Ausnehmungen an der Welle in Form von radial verlaufenden Bohrungen vorliegen, die jeweils im Bereich der axialen Enden des Innenrings angeordnet sind und mit einer axialen Bohrung in der Mitte der Welle in Verbindung stehen. Hierüber kann eine sehr kompakte Zuführung von Schmiermittel zu dem Innenring erreicht werden. It is a further embodiment of the invention that the recesses are present on the shaft in the form of radially extending bores, which are each arranged in the region of the axial ends of the inner ring and with an axial bore in the middle of the shaft in communication. This allows a very compact supply of lubricant to the inner ring can be achieved.
Entsprechend einer weiteren, vorteilhaften Ausführungsform der Erfindung ist der Innenring mitsamt den Einformungen als Schmiedeteil gefertigt. Vorteilhafterweise kann hierdurch eine Herstellung des Innenrings mit niedrigem Aufwand bewerkstelligt werden. According to a further advantageous embodiment of the invention, the inner ring is made together with the indentations as a forging. Advantageously, this makes it possible to manufacture the inner ring at low cost.
In Weiterbildung der Erfindung sind die Wälzkörper zweireihig angeordnet. Dadurch kann die Belastbarkeit der Lagerung deutlich gesteigert werden. In development of the invention, the rolling elements are arranged in two rows. As a result, the load capacity of the storage can be significantly increased.
Gemäß einer weiteren Ausgestaltung der Erfindung sind die benachbarten Komponenten Synchronringe einer Synchronisation. Vorteilhafterweise kann dabei durch die erfindungsgemäße Gestaltung der Lageranordnung eine zuverlässige Kühlung und Schmierung der Synchronringe erreicht und damit eine ausreichende Lebensdauer der Synchronisation gewährleistet werden. According to a further embodiment of the invention, the neighboring components are synchronizing rings of a synchronization. Advantageously, can be achieved by the inventive design of the bearing assembly reliable cooling and lubrication of the synchronizer rings and thus a sufficient lifetime of the synchronization can be ensured.
Weitere, die Erfindung verbessernde Maßnahmen werden nachstehend gemeinsam mit der Beschreibung einer bevorzugten Ausführungsform der Erfindung anhand der Figuren näher dargestellt. Further, measures improving the invention will be described in more detail below together with the description of a preferred embodiment of the invention with reference to FIGS.
Es zeigt: It shows:
Fig. 1 eine Schnittansicht der erfindungsgemäßen Lageranordnung; Fig. 1 is a sectional view of the bearing assembly according to the invention;
Fig. 2 eine perspektivische Einzelansicht einer Welle der erfindungsgemäßen Lageranordnung; Fig. 3 eine perspektivische Einzelansicht eines Innenrings; und FIG. 2 shows a perspective individual view of a shaft of the bearing arrangement according to the invention; FIG. 3 shows a perspective individual view of an inner ring; and
Fig. 4 eine perspektivische Darstellung des Zusammenbaus der erfindungsgemäßen Lageranordnung. Fig. 4 is a perspective view of the assembly of the bearing assembly according to the invention.
In Fig. 1 ist eine Schnittdarstellung der erfindungsgemäßen Lageranordnung zu sehen. Diese verfügt über einen Innenring 1 , welcher auf einer Welle 2, in diesem Fall einer Getriebewelle, verdrehfest aufgesetzt ist und auf einem Außendurchmesser mehrere Wälzkörper 3 führt. Die Wälzkörper 3 sind dabei zweireihig angeordnet, sowie in einem gemeinsamen Käfig 4 geführt und ermöglichen eine Relativrotation zwischen dem Innenring 1 und einem Losrad 5, das koaxial zur Welle 2 angeordnet ist. In axialer Richtung benachbart zu Losrad 5 ist zudem eine - hier nur teilweise dargestellte - Synchronisation 6 vorgesehen, bei deren Betätigung auf dem Fachmann bekannte Art und Weise eine formschlüssige Koppelung des Losrades 5 mit der Welle 2 erreicht werden kann. In Fig. 1 is a sectional view of the bearing assembly according to the invention can be seen. This has an inner ring 1, which is mounted on a shaft 2, in this case a gear shaft, rotationally fixed and on an outer diameter several rolling elements 3 leads. The rolling elements 3 are arranged in two rows, and guided in a common cage 4 and allow a relative rotation between the inner ring 1 and a loose wheel 5, which is arranged coaxially to the shaft 2. In the axial direction adjacent to idler gear 5 is also a - here only partially shown - Synchronization 6 is provided, upon actuation in the art known manner a positive coupling of the idler gear 5 can be achieved with the shaft 2.
Um nun eine ausreichende Schmiermittelversorgung sowohl der Wälzkörper 3 als auch der benachbarten Komponenten der Synchronisation 6, insbesondere der Synchronringe, sicherzustellen, verfügt die Welle 2 über eine Axialbohrung 7, von welcher mehrere radial verlaufende Bohrungen 8 abzweigen. Die Bohrungen 8 sind dabei jeweils im Bereich der axialen Enden des Innenrings 1 angeordnet und münden im Bereich des Außendurchmessers der Welle 2 jeweils in umlaufende Nuten 9A und 9B ein, deren Verlauf insbesondere aus der perspektivischen Ansicht der Welle 2 in Fig. 2 hervorgeht. Das in diesen Bereich geförderte Schmiermittel kann dann im weiteren Verlauf aus den Nuten 9A und 9B über Einformungen 10 am Innenring 1 zum Einen zwischen den Käfig 4 und den jeweiligen Wälzkörper 3 gelangen und zum Anderen auch der benachbarten Synchronisation 6 zugeführt werden. Durch die großen Querschnitte der Bohrungen 8, sowie aufgrund der Gestaltung der Nuten 9A und 9B und der Einformungen 10 kann dies mit einem geringen Strömungswiderstand und außermittig des Innenrings 1 passieren, so dass niedrige Reibungsverluste im Bereich der Lageranordnung auftreten, gleichzeitig aber eine ausreichende Schmiermittelversorgung der Wälzkörper 3 und der Synchronisation 6 sichergestellt ist. In order to ensure a sufficient supply of lubricant to both the rolling elements 3 and the adjacent components of the synchronization 6, in particular the synchronizer rings, the shaft 2 has an axial bore 7, from which a plurality of radially extending bores 8 branch off. The holes 8 are each arranged in the region of the axial ends of the inner ring 1 and open in the region of the outer diameter of the shaft 2 in each case in circumferential grooves 9A and 9B, the course of which is apparent in particular from the perspective view of the shaft 2 in Fig. 2. The subsidized in this area lubricant can then pass from the grooves 9A and 9B on the recesses 10 on the inner ring 1 on the one hand between the cage 4 and the respective rolling elements 3 and on the other also the adjacent synchronization 6 are supplied. Due to the large cross sections of the holes 8, as well as due to the design of the grooves 9A and 9B and the recesses 10, this can be done with a small Flow resistance and off-center of the inner ring 1 happen so that low friction losses occur in the bearing assembly, but at the same time sufficient lubricant supply to the rolling elements 3 and the synchronization 6 is ensured.
Aus der perspektivischen Ansicht des Innenrings 1 in Fig. 3 geht ferner hervor, dass die Einformungen 10 an den axialen Enden des Innenrings 1 und äquidistant über dessen Umfang verteilt sind. Des Weiteren ist hieraus der gewölbte Verlauf der Einformungen 10 ersichtlich, wodurch zum Einen eine große Durchflussfläche geschaffen wird, dabei gleichzeitig aber auch eine ausreichende Auflagefläche des Innenrings 1 auf der Welle 2 verbleibt, so dass zu hohe Flächenpressungen in diesem Bereich verhindert werden können. From the perspective view of the inner ring 1 in Fig. 3 also shows that the recesses 10 are distributed at the axial ends of the inner ring 1 and equidistantly over the circumference. Furthermore, from this, the curved course of the recesses 10 can be seen, whereby on the one hand a large flow area is created, but at the same time a sufficient contact surface of the inner ring 1 remains on the shaft 2, so that too high surface pressures can be prevented in this area.
Schließlich geht aus Fig. 4 der Zusammenbau der erfindungsgemäßen Lageranordnung hervor, wobei in diesem Fall sowohl das Losrad 5 als auch die Synchronisation 6 nicht mit dargestellt ist. Wie hieraus insbesondere zu erkennen ist, ist jede Bohrung 8 mittig zu einer Einformung 10 am Innenring 1 positioniert, so dass ein optimales Strömen von Schmiermittel zu den Wälzkörpern 3 ermöglicht wird. Zudem muss das Schmiermittel hierbei nur einen äußerst kurzen Weg von der Bohrung 8 zu den Wälzkörpern 3 zurücklegen. Allerdings kann das Schmiermittel auch bei einer außermittigen Anordnung der Bohrungen 8 über die Nuten 9A und 9B in diesen Bereich gelangen, so dass keine Ausrichtung des Innenrings 1 zur Welle 2 bei der Montage notwendig ist. Finally, from Fig. 4 shows the assembly of the bearing assembly according to the invention, in which case both the idler gear 5 and the synchronization 6 is not shown. As can be seen from this particular, each hole 8 is positioned centrally to a recess 10 on the inner ring 1, so that an optimal flow of lubricant to the rolling elements 3 is made possible. In addition, the lubricant must travel only a very short distance from the bore 8 to the rolling elements 3. However, even with an off-center arrangement of the bores 8, the lubricant can reach this area via the grooves 9A and 9B, so that no alignment of the inner ring 1 with the shaft 2 during assembly is necessary.
Mittels der erfindungsgemäßen Lageranordnung ist es somit möglich, eine ausreichende Schmiermittelversorgung und Kühlung des Bereichs der Wälzkörper 3 sowie Komponenten der Synchronisation 6 sicherzustellen und hierbei gleichzeitig niedrige Reibungsverluste in der Lagerung hervorzurufen. Da dies ohne zusätzlichen Bauraumbedarf bewerkstelligt werden kann, ist die Lageranordnung insbesondere für Anwendungen im Bereich eines Kraftfahr- zeuggetriebes, wie beispielsweise eines Handschalt- oder Doppelkupplungsgetriebes, aber auch bei Planetenstufen eines Automatikgetriebes, geeignet. By means of the bearing arrangement according to the invention, it is thus possible to ensure a sufficient supply of lubricant and cooling of the area of the rolling bodies 3 as well as components of the synchronization 6 and at the same time cause low friction losses during storage. Since this can be done without additional space requirements, the bearing assembly is particularly for applications in the field of motor vehicle zeugsetriebes, such as a manual or dual-clutch transmission, but also in planetary stages of an automatic transmission, suitable.
Bezuqszeichen REFERENCE CHARACTERS
Innenring inner ring
Welle  wave
Wälzkörper  rolling elements
Käfig  Cage
Losrad  Losrad
Synchronisation  synchronization
Axial bohrung  Axial bore
Bohrungen  drilling
Nuten  groove
Einformungen  indentations

Claims

Patentansprüche claims
1 . Lageranordnung für ein Kraftfahrzeuggetriebe, mit einem Innenring (1 ), weicher auf einer Welle (2), insbesondere einer Getriebewelle, aufgesetzt ist und auf einem Außendurchmesser mehrere Wälzkörper (3) führt, die eine Relativrotation zwischen dem Innenring (1 ) und einem äußeren Element, insbesondere einem Losrad (5), zulassen, wobei der Innenring (1 ) und die Welle (2) jeweils über Ausnehmungen zur Schmiermittelversorgung verfügen, dadurch gekennzeichnet, dass die Ausnehmungen am Innenring (1 ) in Form von, an axialen Enden des Innenrings (1 ) ausgeprägten und sich in radialer Richtung erstreckenden Einformungen (10) vorliegen, die über den Umfang des Innenrings (1 ) verteilt sind und über welche Schmiermittel aus den Ausnehmungen der Welle (2) den Wälzkörpern (3) und benachbarten Komponenten zuführbar ist. 1 . Bearing arrangement for a motor vehicle transmission, with an inner ring (1), softer on a shaft (2), in particular a gear shaft, is mounted and on an outer diameter a plurality of rolling elements (3) leads, a relative rotation between the inner ring (1) and an outer element , in particular a loose wheel (5) allow, wherein the inner ring (1) and the shaft (2) each have recesses for supplying lubricant, characterized in that the recesses on the inner ring (1) in the form of, at axial ends of the inner ring ( 1) pronounced and extending in the radial direction recesses (10) are present, which are distributed over the circumference of the inner ring (1) and via which lubricant from the recesses of the shaft (2) the rolling elements (3) and adjacent components can be fed.
2. Lageranordnung nach Anspruch 1 , dadurch gekennzeichnet, dass die Einformungen (10) im Querschnitt jeweils einen gewölbten Verlauf aufweisen. 2. Bearing arrangement according to claim 1, characterized in that the recesses (10) in cross section each have a curved course.
3. Lageranordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Welle (2) auf einem Außendurchmesser und im Bereich der axialen Enden des Innenrings (1 ) jeweils über eine umlaufende Nut (9A, 9B) verfügt, in welche jeweils zugeordnete Ausnehmungen der Welle (2) einmünden. 3. Bearing arrangement according to claim 1 or 2, characterized in that the shaft (2) on an outer diameter and in the region of the axial ends of the inner ring (1) each have a circumferential groove (9A, 9B), in which respectively associated recesses of Open shaft (2).
4. Lageranordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Ausnehmungen an der Welle (2) in Form von radial verlaufenden Bohrungen (8) vorliegen, die jeweils im Bereich der axialen Enden des Innenrings (1 ) angeordnet sind und mit einer Axialbohrung (7) in der Mitte der Welle (2) in Verbindung stehen. 4. Bearing arrangement according to one of claims 1 to 3, characterized in that the recesses on the shaft (2) in the form of radially extending bores (8), which are each arranged in the region of the axial ends of the inner ring (1) and with an axial bore (7) in the middle of the shaft (2) are in communication.
5. Lageranordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Innenring (1 ) mitsamt den Einformungen (10) als Schmiedeteil gefertigt ist. 5. Bearing arrangement according to one of the preceding claims, characterized in that the inner ring (1) together with the indentations (10) is made as a forged part.
6. Lageranordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Wälzkörper (3) zweireihig angeordnet sind. 6. Bearing arrangement according to one of the preceding claims, characterized in that the rolling elements (3) are arranged in two rows.
7. Lageranordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die benachbarten Komponenten Synchronringe einer Synchronisation (6) sind. 7. Bearing arrangement according to one of the preceding claims, characterized in that the adjacent components are synchronizing rings of a synchronization (6).
8. Kraftfahrzeuggetriebe, welches in einem Antriebsstrang eines Kraftfahrzeuges platziert ist und bei welchem zumindest eine Lageranordnung nach einem der vorhergehenden Ansprüche Anwendung findet. 8. Motor vehicle transmission, which is placed in a drive train of a motor vehicle and in which at least one bearing arrangement according to one of the preceding claims applies.
PCT/EP2010/060653 2009-08-10 2010-07-22 Bearing arrangement for a motor vehicle transmission, having improved lubricant supply WO2011018320A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009028383.8 2009-08-10
DE102009028383A DE102009028383A1 (en) 2009-08-10 2009-08-10 Bearing assembly for a motor vehicle transmission, with improved lubricant supply

Publications (2)

Publication Number Publication Date
WO2011018320A2 true WO2011018320A2 (en) 2011-02-17
WO2011018320A3 WO2011018320A3 (en) 2011-04-21

Family

ID=43448014

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/060653 WO2011018320A2 (en) 2009-08-10 2010-07-22 Bearing arrangement for a motor vehicle transmission, having improved lubricant supply

Country Status (2)

Country Link
DE (1) DE102009028383A1 (en)
WO (1) WO2011018320A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010042480A1 (en) * 2010-10-15 2012-04-19 Zf Friedrichshafen Ag Transmission, in particular marine gearbox
SE537276C2 (en) * 2013-07-16 2015-03-24 Scania Cv Ab Arrangement for guiding lubricant to a rolling bearing carrying a gear on an axle in a gearbox
DE102017206171A1 (en) * 2017-04-11 2018-10-11 Zf Friedrichshafen Ag Gearbox with a baffle element
JP2021099148A (en) * 2019-12-23 2021-07-01 ヤマハ発動機株式会社 Transmission and vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005001839A1 (en) 2005-01-14 2006-07-20 Zf Friedrichshafen Ag Lubricating device for shaft-hub connection has bearing constructed in such way that part of lubricating fluid flowing through bearing branches off and is directed axially into driving profile or into splines of shaft-hub connection

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7320320U (en) * 1973-12-20 Kugelfischer Schaefer G & Co Rolling bearing ring with lubricant opening
DE493631C (en) * 1926-06-19 1930-03-11 Siemens Schuckertwerke Akt Ges Roller bearings
US2977161A (en) * 1954-11-23 1961-03-28 Gen Motors Corp Antifriction bearing and method of operation
US3528711A (en) * 1968-09-03 1970-09-15 Gen Motors Corp Bearing lubrication
US4384749A (en) * 1981-06-26 1983-05-24 The United States Of America As Represented By The Secretary Of The Air Force Reliability roller bearing
JPS63231021A (en) * 1987-03-17 1988-09-27 Nippon Seiko Kk Lubricating device for roller bearing
JPS63158624U (en) * 1987-04-07 1988-10-18
DE4332032B4 (en) * 1993-09-21 2005-02-24 Ina-Schaeffler Kg Pressurized radial bearing
DE19603975A1 (en) * 1996-02-05 1997-07-03 Daimler Benz Ag Synchromesh gear engaging mechanism
DE19851897B4 (en) * 1998-11-11 2007-08-23 Zf Friedrichshafen Ag Tapered roller bearings
JP2004076810A (en) * 2002-08-12 2004-03-11 Yanagawa Seiki Co Ltd Lubricating structure of gear transmission
DE10351132A1 (en) * 2003-11-03 2005-08-18 Zf Friedrichshafen Ag Main shaft for a gearbox has rigidly attached gear wheels and with free running gears on radial bearings
DE102004009472A1 (en) * 2004-02-27 2005-09-15 Daimlerchrysler Ag Motor vehicle's transmission has hardened needle rolling bodies which in relation to bearing bore in gearwheel have radial clearance of at least 5 per cent of needle rolling body's diameter
JP2005291445A (en) * 2004-04-02 2005-10-20 Ntn Corp Tapered roller bearing
JP2006258262A (en) * 2005-03-18 2006-09-28 Nsk Ltd Double-row rolling bearing
DE102007045368A1 (en) * 2007-09-22 2009-04-02 Zf Friedrichshafen Ag Method and device for lubricating the axial starts of idler gears arranged on a shaft

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005001839A1 (en) 2005-01-14 2006-07-20 Zf Friedrichshafen Ag Lubricating device for shaft-hub connection has bearing constructed in such way that part of lubricating fluid flowing through bearing branches off and is directed axially into driving profile or into splines of shaft-hub connection

Also Published As

Publication number Publication date
WO2011018320A3 (en) 2011-04-21
DE102009028383A1 (en) 2011-02-17

Similar Documents

Publication Publication Date Title
EP2954233B1 (en) Planet gear bearing in a planetary gearset
DE102015207114A1 (en) Planetary bolts for the lubrication of planetary gear bearings
DE102010048479B4 (en) The axial bearing
DE102013222731A1 (en) Sliding sleeve for storing sun gears
DE10306926A1 (en) thrust
DE102008026562A1 (en) Ball and roller bearing for e.g. crankshaft of motor vehicle, has slots formed between profiled pin sections, which are extended in middle regions radial to extent of outer diameter of ring sections
WO2011018320A2 (en) Bearing arrangement for a motor vehicle transmission, having improved lubricant supply
DE102010007668A1 (en) Gear element of a dynamic spline or circular spline type for a tension-shaft gear, e.g. in a vehicle's steering system, has a gear element with a sliding surface made to slide on a two-way sliding surface
EP3612743A1 (en) Transmission assembly comprising axial tilt segments
DE102015215115B3 (en) wheel bearing unit
DE102015200463B4 (en) Planetenradlagerung with axially and radially supported sleeve
DE102008035691B4 (en) radial bearings
DE102014207627A1 (en) Planetary gear bearing in a planetary gearbox
DE102006031029A1 (en) Wheel bearing unit i.e. double-row tapered roller bearing, for e.g. motor vehicle wheel hub`s axial borehole, has outer and inner rings, and tapered roller bearings radially arranged between outer and inner rings related to each other
DE102008016798B4 (en) Rolling and steering gear with such a rolling bearing
DE102012207528B3 (en) roller bearing
DE102014212270A1 (en) Cage for a rolling bearing, roller bearing and planetary gear bearing
EP2208900A1 (en) Ball bearing unit
DE102018100392B3 (en) Axial needle bearing and method for producing a running disk of such an axial needle bearing
DE19860688A1 (en) Cage for rolling bearings comprises rims at its ends provided respectively with a circumferential, axially oriented groove and a number of radial projections which snap into the groove of an adjacent cage
DE102015215192A1 (en) wheel bearing unit
WO2015188818A1 (en) Antifriction bearing for a sprocket wheel in a transfer gearbox
DE102005024000A1 (en) Radial bearing consists of two or more supplementary cages housed in roller body and being of varying lengths and having one or more roller bearing rows
DE102014219574B4 (en) roller bearing
DE102013206969A1 (en) Planetary gear bearing in a planetary gearbox

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10739326

Country of ref document: EP

Kind code of ref document: A2

122 Ep: pct application non-entry in european phase

Ref document number: 10739326

Country of ref document: EP

Kind code of ref document: A2