WO2006042639A1 - Thin annular bearing - Google Patents
Thin annular bearing Download PDFInfo
- Publication number
- WO2006042639A1 WO2006042639A1 PCT/EP2005/010710 EP2005010710W WO2006042639A1 WO 2006042639 A1 WO2006042639 A1 WO 2006042639A1 EP 2005010710 W EP2005010710 W EP 2005010710W WO 2006042639 A1 WO2006042639 A1 WO 2006042639A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bearing
- ring
- thin
- outer ring
- raceway
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/10—Making other particular articles parts of bearings; sleeves; valve seats or the like
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- 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
- F16C33/583—Details of specific parts of races
- F16C33/585—Details of specific parts of races of raceways, e.g. ribs to guide the rollers
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- 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
- F16C33/588—Races of sheet metal
-
- 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
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
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- 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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/10—Application independent of particular apparatuses related to size
- F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
Definitions
- the invention relates to a thin-section bearing with a very small cross section with respect to the Lager ⁇ diameter with two bearing rings, between which rolling on corresponding raceways rolling elements. Moreover, the invention relates to a method for producing a thin-film bearing.
- Such thin-ring bearings in which, in contrast to standard Wälzlagerrei ⁇ hen the cross section with the bearing diameter does not or only slightly increases, there are as four-point bearings, deep groove ball bearings and angular contact ball bearings in a bearing diameter range between 25 and 1000 mm.
- Main fields of application are handling devices, industrial robots, textile and printing presses, medical, optical and optronic devices, aerospace.
- the advantages of such generic Dünnringlagern are a low mass, low torque and the ability to create spatial and weight-saving construction, which have a high rigidity and running accuracy.
- Such Dünnringlager are described, for example, on page 10 of su ⁇ book "The Wälzlagerpraxis", Manual for the calculation and design of bearings, united specialist publisher GmbH, Mainz 1995.
- the invention is therefore based on the object to provide a new type of Dünnringicalz ⁇ camps, which can be manufactured in particular cost and have a low backlash.
- this object is achieved according to the characterizing part of claim 1 in conjunction with the preamble in that the bearing rings are produced by a non-cutting shaping process and in that one of the bearing rings has a raceway which in at least one peripheral portion has a circular shape deviating elastically yielding track curvature such that at least one of the rolling elements between the raceway curvature and this opposite track is radially biased.
- An advantage of the thin-section bearing according to the invention is its simple manufacture by chipless technology. This term is to be interpreted broadly in the sense of the invention and is intended to include all the non-cutting process known to the person skilled in the art.
- the thin-ring bearings produced in this way do not require subsequent machining of the bearing rings, since the bearing tolerances are compensated by the shape of the outer or inner ring.
- Another advantage is the possible adjustment of the backlash, which has a positive effect on the formation of noise in particular.
- a further advantage lies in the fact that the bearing rings produced without cutting have a smaller radial space compared with the bearing rings produced by machining, so that the saving of installation space is possible once again.
- Ante is the main variant, since in almost all cases it is important to keep the part to be stored free of play.
- the Dünn ⁇ ring bearing should be as a deep groove ball bearing, an angular contact ball bearings or as a Vierige ⁇ ball bearings.
- the respective bearing variant depends on the predetermined installation case, which determines the special requirements for the bearing type.
- the deviating from the circular shape elastically compliant raceway curvature is formed by an inserted in a groove of a bearing ring elastic spring element, spieltagen, by a resilient ring.
- a wire rolling bearing has arisen, which enables simple manufacture of the bearing rings. These then do not need to be subjected to expensive curing processes, for example.
- the resilient rings which are placed in the appropriate recess of the bearing rings, consist of high quality spring steel wires and are blown up. The distance between the wire ends ensures that the wire rings fit well and can also expand freely in the event of temperature fluctuations.
- bearing rings which are provided with a radially inwardly or radially outwardly directed flange, wherein the flange is provided with through-holes fastening. In this way an adaptation to the surrounding construction and a simple fixation is ensured.
- Direction offset areas may be formed, which are designed with Befesti ⁇ supply holes.
- the Lager ⁇ outer ring should be formed from a profiled tape that is cut to length and rounded in accordance with the desired later bearing diameter, be ⁇ before it is verbun ⁇ at its abutting ends by a weld.
- the bearing ring is produced in a particularly simple manner.
- the thin-section bearing should be used to support a fixed inside of a steering wheel of a motor vehicle fixed airbags, the steering wheel with a steering shaft is rotatably ver ⁇ connected, which is received via two spaced rolling bearings in a Lenk ⁇ tube ,
- the bearing according to the invention can be made of a thin-walled strip, which is provided on one side with a substantially spherical track by a non-cutting shaping process, then this strip is cut to length, rounded and attached to its own surface 4546-10-EN 5
- FIG. 2 shows a side view of the thin-section bearing according to FIG. 1,
- FIG. 2 a shows a schematic, greatly exaggerated representation of a cross section through an outer ring with a raceway deviating from the circular shape
- FIG. 3, 4 is a longitudinal section through different embodiments
- Figure 5 shows a longitudinal section through a steering column including steering wheel and airbag.
- the bearing inner ring 1 has a circular shape.
- the bearing outer ring 3 which has a deviating from the circular shape shape.
- the bearing outer ring 3 at three offset by 120 ° to each other peripheral portions track curvatures 4.
- the track curvatures 4 are elastically yielding in the radial direction, so that on the one hand the shaft 2 is firmly biased in three circumferential regions, since the guided in the cage 5 rolling elements 6 bear against both the inner race 7 and the outer race 8, while on the other hand a Eigen ⁇ movement of the shaft 2 is possible by overcoming the resulting from the career curvatures 4 elasticity.
- the illustrated in Figures 1 and 2 thin-section bearing 11 consists of the bearing inner ring 12 and the bearing outer ring 13, both of which are made without cutting. Between the two 14 guided bearing balls 15 roll in the cage on zugehö ⁇ rigen raceways 12.1, 13.1 from.
- the bearing inner ring 12 is provided on the left side with the radially inwardly directed flange 12.2, which is equipped with through-holes fastening 12.3.
- the outer bearing ring 13 is polygonal-shaped, i. he has at three different circumferential positions on the track curvatures 13.2, so that in this area the bearing balls 15 abut both raceways 12.1, 13.1, i. that Dünn ⁇ ring bearing 11 is biased accordingly.
- the thin-ring bearing 16 shown in FIG. 3 consists of the bearing inner ring 17 and the bearing outer ring 18, between which bearing balls 20 guided in the cage 19 on associated raceways 17.1, 18.1 roll.
- a connecting construction of the bearing inner ring 17 is provided with the radially in ⁇ NEN directed flange 17.2, which is equipped with evenly arranged around the circumference mounting holes 17.3.
- the elastically yielding raceway convexity 21. 1 is formed by an elastic element 21 in the form of a resilient ring which is inserted into a groove in the bearing outer ring 18.
- the thin-section bearing 22 shown in FIG. 4 consists of the bearing inner ring 23 and the bearing outer ring 24, between which bearing balls 26 guided in the cage 25 on associated raceways 23.1, 24.1 roll.
- the bearing inner ring 23 is equipped with the radially inwardly directed flange 23.2.
- the Lager ⁇ outer ring 24 in turn at three spaced peripheral positions radially inwardly directed career curvatures, so that in this area the bearing balls 26 abut both on the inner race 23.1 and on the outer race 24.1.
- the provided with a slot Lagerau touch ⁇ ring 24 is received by the sleeve 27, the radially outwardly directed flange 27.1 consists of two mutually offset in the axial direction of areas, which are provided with mounting holes 27.2.
- FIG. 5 schematically shows a steering arrangement in which a steering wheel 28 is non-rotatably connected to a steering spindle 29, which has two spaced-apart rolling bearings 30, 31 in a steering tube
- the steering wheel 28 is rotatable via another rolling bearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Dünnringlager Thin section bearings
Anwendungsgebiet der ErfindungField of application of the invention
Die Erfindung betrifft ein Dünnringlager mit einem im Verhältnis zum Lager¬ durchmesser sehr kleinen Querschnitt mit zwei Lagerringen, zwischen denen auf zugehörigen Laufbahnen Wälzkörper abrollen. Außerdem betrifft die Erfin¬ dung ein Verfahren zur Herstellung eines Dünnringlagers.The invention relates to a thin-section bearing with a very small cross section with respect to the Lager¬ diameter with two bearing rings, between which rolling on corresponding raceways rolling elements. Moreover, the invention relates to a method for producing a thin-film bearing.
Hintergrund der ErfindungBackground of the invention
Derartige Dünnringlager, bei denen im Gegensatz zu genormten Wälzlagerrei¬ hen der Querschnitt mit dem Lagerdurchmesser nicht bzw. nur unwesentlich zunimmt, gibt es als Vierpunktlager, Rillenkugellager und Schrägkugellager in einem Lagerdurchmesserbereich zwischen 25 und 1000 mm. Hauptanwen¬ dungsgebiete sind Handhabungsgeräte, Industrieroboter, Textil- und Druckma¬ schinen, medizinische, optische und optronische Geräte, Luft- und Raumfahrt. Die Vorteile von solch gattungsgemäßen Dünnringlagern sind eine geringe Masse, ein geringes Drehmoment und die Möglichkeit, räum- und gewichtsspa¬ rende Konstruktion zu erstellen, die eine hohe Steifigkeit und Laufgenauigkeit aufweisen. Derartige Dünnringlager sind beispielsweise auf Seite 10 des Fach¬ buches „Die Wälzlagerpraxis", Handbuch für die Berechnung und Gestaltung von Lagerungen, vereinigte Fachverlage GmbH, Mainz 1995 beschrieben.Such thin-ring bearings, in which, in contrast to standard Wälzlagerrei¬ hen the cross section with the bearing diameter does not or only slightly increases, there are as four-point bearings, deep groove ball bearings and angular contact ball bearings in a bearing diameter range between 25 and 1000 mm. Main fields of application are handling devices, industrial robots, textile and printing presses, medical, optical and optronic devices, aerospace. The advantages of such generic Dünnringlagern are a low mass, low torque and the ability to create spatial and weight-saving construction, which have a high rigidity and running accuracy. Such Dünnringlager are described, for example, on page 10 of Fach¬ book "The Wälzlagerpraxis", Manual for the calculation and design of bearings, united specialist publisher GmbH, Mainz 1995.
Der Nachteil der bisher bekannten Dünnringlager liegt darin, dass sie aufgrund ihrer spangebenden Herstellung sehr teuer sind. Die sehr dünnwandigen Ringe müssen wegen starker Verformung aufwendig gehärtet, d.h., gefesselt gehärtet und danach in mehrerer Schleifdurchgängen geschliffen werden. Es ist auch von Nachteil, dass Dünnringlager nach dem bisherigen Stand der Technik hochgenaue Lagersitze erfordern, die ebenfalls nur durch aufwendige Schleif¬ operationen herstellbar sind. 4546-10-DE 2The disadvantage of the previously known thin-ring bearings is that they are very expensive due to their machining production. The very thin-walled rings have to be hardened consuming because of strong deformation, ie, hardened tied and then ground in several grinding passes. It is also disadvantageous that thin-section bearings according to the prior art require highly accurate bearing seats which can likewise be produced only by complicated grinding operations. 4546-10-EN 2
Zusammenfassung der ErfindungSummary of the invention
Ausgehend von den Nachteilen des bisherigen Standes der Technik liegt der Erfindung daher die Aufgabe zugrunde, eine neue Gattung von Dünnringwälz¬ lagern bereitzustellen, die sich insbesondere kostengünstig fertigen lassen und die eine geringe Spielfreiheit aufweisen.Based on the disadvantages of the prior art, the invention is therefore based on the object to provide a new type of Dünnringwälz¬ camps, which can be manufactured in particular cost and have a low backlash.
Erfindungsgemäß wird diese Aufgabe nach dem kennzeichnenden Teil von Anspruch 1 in Verbindung mit dessen Oberbegriff dadurch gelöst, dass die La¬ gerringe durch einen spanlosen Formgebungsprozeß hergestellt sind und dass einer der Lagerringe eine Laufbahn aufweist, die in wenigstens einem Um- fangsabschnitt eine von ihrer Kreisform abweichende elastisch nachgiebige Laufbahnwölbung derart aufweist, dass wenigstens einer der Wälzkörper zwi¬ schen der Laufbahnwölbung und dieser gegenüberliegenden Laufbahn radial vorgespannt ist.According to the invention, this object is achieved according to the characterizing part of claim 1 in conjunction with the preamble in that the bearing rings are produced by a non-cutting shaping process and in that one of the bearing rings has a raceway which in at least one peripheral portion has a circular shape deviating elastically yielding track curvature such that at least one of the rolling elements between the raceway curvature and this opposite track is radially biased.
Ein Vorteil des erfindungsgemäßen Dünnringlager ist seine einfache Herstel¬ lung durch Spanlostechnologie. Dieser Begriff ist im Sinne der Erfindung weit auszulegen und soll alle dem Fachmann bekannten Spanlosverfahren ein¬ schließen. Die derart hergestellten Dünnringlager benötigen keine nachträgli¬ che Bearbeitung der Lagerringe, da die Lagertoleranzen über die Formgebung des Außen- oder des Innenringes ausgeglichen werden. Ein anderer Vorteil ist die mögliche Einstellung der Spielfreiheit, die sich insbesondere auf die Ge¬ räuschbildung in positiver Weise auswirkt. Ein weiterer Vorteil liegt darin, dass die spanlos hergestellten Lagerringe im Vergleich zu den spangebend herge¬ stellten Lagerringen einen geringeren radialen Bauraum aufweisen, so dass nochmals die Einsparung von Bauraum möglich ist.An advantage of the thin-section bearing according to the invention is its simple manufacture by chipless technology. This term is to be interpreted broadly in the sense of the invention and is intended to include all the non-cutting process known to the person skilled in the art. The thin-ring bearings produced in this way do not require subsequent machining of the bearing rings, since the bearing tolerances are compensated by the shape of the outer or inner ring. Another advantage is the possible adjustment of the backlash, which has a positive effect on the formation of noise in particular. A further advantage lies in the fact that the bearing rings produced without cutting have a smaller radial space compared with the bearing rings produced by machining, so that the saving of installation space is possible once again.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprü¬ chen beschrieben.Further advantageous embodiments of the invention are described in the subclaims.
So ist nach Anspruch 2 vorgesehen, dass die Laufbahn des Lageraußenringes eine von ihrer Kreisform abweichende Laufbahnwölbung aufweist. Diese Vari- 4546-10-DE 3Thus, it is provided according to claim 2, that the raceway of the bearing outer ring has a different from their circular shape career curvature. These variables 4546-10-EN 3
ante ist die Hauptvariante, da es in nahezu allen Fällen darauf ankommt, dass zu lagernde Teil spielfrei zu halten.Ante is the main variant, since in almost all cases it is important to keep the part to be stored free of play.
Nach einem weiteren Merkmal der Erfindung gemäß Anspruch 3 soll das Dünn¬ ringlager als ein Rillenkugellager, ein Schrägkugellager oder als ein Vierpunkt¬ kugellager sein. Die jeweilige Lagervariante richtet sich nach dem vorgegebe¬ nen Einbaufall, der die speziellen Forderungen an den Lagertyp bestimmt.According to a further feature of the invention according to claim 3, the Dünn¬ ring bearing should be as a deep groove ball bearing, an angular contact ball bearings or as a Vierpunkt¬ ball bearings. The respective bearing variant depends on the predetermined installation case, which determines the special requirements for the bearing type.
Nach einer zusätzlichen Variante gemäß Anspruch 4 ist vorgesehen, dass die von der Kreisform abweichende elastisch nachgiebige Laufbahnwölbung durch ein in einer Nut eines Lagerringes eingelegtes elastisches Federelement, bei¬ spielsweise durch einen federnden Ring, gebildet ist. Auf diese Weise ist prak¬ tisch ein Drahtwälzlager entstanden, dass eine einfache Fertigung der Lager¬ ringe ermöglicht. Diese brauchen dann beispielsweise nicht aufwendigen Här¬ tungsverfahren unterworfen werden. Die federnden Ringe, die in passende Ausdrehung der Lagerringe gelegt werden, bestehen aus hochwertigen Feder¬ stahldrähten und sind gesprengt. Der Abstand zwischen den Drahtenden sorgt dafür, dass die Drahtringe gut anliegen und sich bei Temperaturschwankungen auch frei ausdehnen können.According to an additional variant according to claim 4 it is provided that the deviating from the circular shape elastically compliant raceway curvature is formed by an inserted in a groove of a bearing ring elastic spring element, spielsweise, by a resilient ring. In this way, virtually a wire rolling bearing has arisen, which enables simple manufacture of the bearing rings. These then do not need to be subjected to expensive curing processes, for example. The resilient rings, which are placed in the appropriate recess of the bearing rings, consist of high quality spring steel wires and are blown up. The distance between the wire ends ensures that the wire rings fit well and can also expand freely in the event of temperature fluctuations.
In den Ansprüchen 5 und 6 sind Lagerringe beschrieben, die mit einem radial nach innen oder radial nach außen gerichteten Flansch versehen sind, wobei der Flansch mit durchgehenden Befestigungsbohrungen ausgestattet ist. Auf diese Weise wird eine Anpassung an die Umgebungskonstruktion und eine einfach Fixierung daran sichergestellt.In the claims 5 and 6 bearing rings are described, which are provided with a radially inwardly or radially outwardly directed flange, wherein the flange is provided with through-holes fastening. In this way an adaptation to the surrounding construction and a simple fixation is ensured.
In Anspruch 7 ist eine weitere Variante des Dünnringlagers beschrieben. Da¬ nach ist ein gesprengter Lageraußenring von einer Hülse aufgenommen, die an einem Ende mit einem radial nach außen gerichteten Flansch versehen ist. Der mit einem radialen Schlitz versehene Lageraußenring lässt sich dadurch in ein¬ facher Weise in die Hülse einsetzten. Der Flansch einschließlich Befestigungs¬ bohrung sorgt wiederum für eine Verbindung mit einer vorgegebenen An¬ schlusskonstruktion, wobei nach Anspruch 8 der Flansch durch zwei in axialer 4546-10-DE 4In claim 7, a further variant of the thin-film bearing is described. Da¬ after a blasted bearing outer ring is received by a sleeve which is provided at one end with a radially outwardly directed flange. The bearing outer ring provided with a radial slot can thereby be inserted into the sleeve in a simple manner. The flange including Befestigungs¬ hole in turn provides a connection with a predetermined An¬ schlusskonstruktion, wherein according to claim 8, the flange by two in axial 4546-10-EN 4
Richtung zueinander versetzte Bereiche gebildet sein kann, die mit Befesti¬ gungsbohrungen ausgestaltet sind.Direction offset areas may be formed, which are designed with Befesti¬ supply holes.
Nach einem zusätzlichen weiteren Merkmal gemäß Anspruch 9 soll der Lager¬ außenring aus einem profiliertem Band gebildet sein, dass entsprechend dem gewünschten späteren Lagerdurchmesser abgelängt und rundgebogen ist, be¬ vor es an seinen aneinander liegenden Enden durch eine Schweißnaht verbun¬ den ist. Durch diese Technologie wird der Lagerring in besonders einfacher Weise herstellbar.According to an additional further feature according to claim 9, the Lager¬ outer ring should be formed from a profiled tape that is cut to length and rounded in accordance with the desired later bearing diameter, be¬ before it is verbun¬ at its abutting ends by a weld. Through this technology, the bearing ring is produced in a particularly simple manner.
Dabei hat es sich nach Anspruch 10 als vorteilhaft erwiesen, wenn die Schweißnaht in einer lastfreien Zone des Lageraußenringes positioniert ist. Dadurch ist sichergestellt, dass die Schweißnaht nicht von den Wälzkörpern des Lagers überrollt wird.It has proved to be advantageous according to claim 10, when the weld is positioned in a load-free zone of the bearing outer ring. This ensures that the weld is not overrun by the rolling elements of the bearing.
Schließlich soll nach Anspruch 11 das Dünnringlager zur Lagerung eines inner¬ halb eines Lenkrades eines Kraftfahrzeuges angeordneten feststehenden Air- bags verwendet sein, wobei das Lenkrad mit einer Lenkspindel drehfest ver¬ bunden ist, die über zwei voneinander beabstandete Wälzlager in einem Lenk¬ rohr aufgenommen ist.Finally, according to claim 11, the thin-section bearing should be used to support a fixed inside of a steering wheel of a motor vehicle fixed airbags, the steering wheel with a steering shaft is rotatably ver¬ connected, which is received via two spaced rolling bearings in a Lenk¬ tube ,
Die Feststellung des Airbags innerhalb des Lenkrades ist von besonderer Be¬ deutung für die Sicherheit des Fahrers, da sich der Airbag im Crash-Fall unab¬ hängig vom jeweiligen Einschlag des Lenkrades immer in der gleichen Richtung öffnen soll, die dem Fahrer den größtmöglichen Schutz bietet. Dünnringlager eigenen sich dazu besonders, da sie einerseits in diesem Fall nur geringe Be¬ lastungen aushalten müssen und andererseits einen großen radialen Bauraum abdecken müssen.The determination of the airbag within the steering wheel is of particular importance for the safety of the driver, since in the event of a crash the airbag should always open in the same direction, independently of the respective steering wheel steering, which offers the driver the greatest possible protection , Thin-section bearings are particularly suitable because, on the one hand, they only have to withstand low loads in this case and, on the other hand, they must cover a large radial installation space.
In besonders kostengünstiger Weise lässt sich das erfindungsgemäße Lager aus einem dünnwandigen Band fertigen, das durch einen spanlosen Formge¬ bungsprozeß einseitig mit einer im Wesentlichen sphärischen Laufbahn verse¬ hen wird, dieses Band anschließend abgelängt, rundgebogen und an seinen 4546-10-DE 5In a particularly cost-effective manner, the bearing according to the invention can be made of a thin-walled strip, which is provided on one side with a substantially spherical track by a non-cutting shaping process, then this strip is cut to length, rounded and attached to its own surface 4546-10-EN 5
aneinander stoßenden Enden verschweißt wird, bevor der so gebildete Lager¬ ring einem weiteren Umformvorgang zur Erzeugung der von der Kreisform ab¬ weichenden Form unterworfen wird.abutting ends is welded before the thus formed Lager¬ ring is subjected to a further forming operation for generating the deviating from the circular shape.
Die Erfindung wird an nachstehenden Ausführungsbeispielen näher beschrie¬ ben.The invention will be described in more detail in the following exemplary embodiments.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Es zeigen:Show it:
Figur 1 einen Längsschnitt durch ein Dünnringlager,1 shows a longitudinal section through a thin-ring bearing,
Figur 2 eine Seitenansicht des Dünnringlagers gemäß Figur 1 ,FIG. 2 shows a side view of the thin-section bearing according to FIG. 1,
Figur 2a eine schematische, stark übertriebne Darstellung eines Quer¬ schnittes durch einen Außenring mit einer von der Kreisform ab¬ weichenden Laufbahn,FIG. 2 a shows a schematic, greatly exaggerated representation of a cross section through an outer ring with a raceway deviating from the circular shape,
Figuren 3, 4 einen Längsschnitt durch unterschiedliche Ausführungsvarianten undFigures 3, 4 is a longitudinal section through different embodiments and
Figur 5 einen Längsschnitt durch eine Lenksäule einschließlich Lenkrad und Airbag.Figure 5 shows a longitudinal section through a steering column including steering wheel and airbag.
Ausführliche Beschreibung der ZeichnungenDetailed description of the drawings
Zur Erläuterung der von der Kreisform abweichenden elastisch nachgiebigen Laufbahnwölbung wird zunächst auf Figur 2a verwiesen, in der ein solches La¬ ger in stark vergrößerter Verzerrung schematisch dargestellt ist. Dort ist ein mit 1 bezeichneter Lagerinnenring gezeigt, der eine mit 2 bezeichnende Welle auf- 4546-10-DE 6To explain the deviating from the circular shape elastically compliant career curvature, reference is first made to Figure 2a, in which such a La ger is shown schematically in greatly enlarged distortion. There, a bearing inner ring designated by 1 is shown, which has a shaft denoting 2. 4546-10-EN 6
nimmt, wobei der Lagerinnenring 1 eine kreisrunde Form besitzt. Zur Lageran¬ ordnung gehört weiter der Lageraußenring 3, der eine von der Kreisform ab¬ weichende Form aufweist. Im vorliegenden Fall weist der Lageraußenring 3 an drei um 120 ° zueinander versetzten Umfangsabschnitten Laufbahnwölbungen 4 auf. Die Laufbahnwölbungen 4 sind in radialer Richtung elastisch nachgiebig, sodaß einerseits die Welle 2 in drei Umfangsbereichen fest vorgespannt ist, da die im Käfig 5 geführten Wälzkörper 6 sowohl an der inneren Laufbahn 7 als auch an der äußeren Laufbahn 8 anliegen, während andererseits eine Eigen¬ bewegung der Welle 2 unter Überwindung der aus den Laufbahnwölbungen 4 herrührenden Elastizität möglich ist. Der Fachmann bezeichnet diese Form des Lageraußenringes 3 als Polygon, wobei der Pferchkreis der inneren Laufbahn 7 und der Hüllkreis der Aufnahmebohrung 9 entspricht. Der radiale Abstand zwi¬ schen Hüllkreis und Laufbahnwölbung 4 ist als radialer Einfall Δ r bezeichnet.takes, with the bearing inner ring 1 has a circular shape. For Lageran¬ order further includes the bearing outer ring 3, which has a deviating from the circular shape shape. In the present case, the bearing outer ring 3 at three offset by 120 ° to each other peripheral portions track curvatures 4. The track curvatures 4 are elastically yielding in the radial direction, so that on the one hand the shaft 2 is firmly biased in three circumferential regions, since the guided in the cage 5 rolling elements 6 bear against both the inner race 7 and the outer race 8, while on the other hand a Eigen¬ movement of the shaft 2 is possible by overcoming the resulting from the career curvatures 4 elasticity. The person skilled in the art designates this shape of the bearing outer ring 3 as a polygon, wherein the equatorial circle of the inner raceway 7 and the enveloping circle of the receiving bore 9 corresponds. The radial distance between enveloping circle and raceway curvature 4 is designated as radial incidence Δ r.
Wird ein solcher Lageraußenring 3 aus einem Band gefertigt, so hat es sich als vorteilhaft erwiesen, wenn die Schweißstelle 10 in den lastfreien Bereich gelegt ist, d.h. in den Bereich, in dem die Wälzkörper 6 nicht mit der äußeren Lauf¬ bahn 8 in Kontakt kommen.If such a bearing outer ring 3 made of a band, it has proved to be advantageous if the weld 10 is placed in the load-free area, i. in the area in which the rolling elements 6 do not come into contact with the outer running track 8.
Das in den Figuren 1 und 2 dargestellte Dünnringlager 11 besteht aus dem Lagerinnenring 12 und dem Lageraußenring 13, die beide spanlos hergestellt sind. Zwischen beiden rollen im Käfig 14 geführte Lagerkugeln 15 auf zugehö¬ rigen Laufbahnen 12.1 , 13.1 ab. Der Lagerinnenring 12 ist linksseitig mit dem radial nach innen gerichteten Flansch 12.2 versehen, der mit durchgehenden Befestigungsbohrungen 12.3 ausgestattet ist. Wie Figur 2 zeigt, ist der Lager¬ außenring 13 polygonförmig gestaltete, d.h. er weist an drei verschiedenen Umfangsstellungen Laufbahnwölbungen 13.2 auf, so dass in diesem Bereich die Lagerkugeln 15 an beiden Laufbahnen 12.1 , 13.1 anliegen, d.h. dass Dünn¬ ringlager 11 ist entsprechend vorgespannt.The illustrated in Figures 1 and 2 thin-section bearing 11 consists of the bearing inner ring 12 and the bearing outer ring 13, both of which are made without cutting. Between the two 14 guided bearing balls 15 roll in the cage on zugehö¬ rigen raceways 12.1, 13.1 from. The bearing inner ring 12 is provided on the left side with the radially inwardly directed flange 12.2, which is equipped with through-holes fastening 12.3. As shown in FIG. 2, the outer bearing ring 13 is polygonal-shaped, i. he has at three different circumferential positions on the track curvatures 13.2, so that in this area the bearing balls 15 abut both raceways 12.1, 13.1, i. that Dünn¬ ring bearing 11 is biased accordingly.
Das in Figur 3 gezeigte Dünnringlager 16 besteht aus dem Lagerinnenring 17 und dem Lageraußenring 18, zwischen denen auf zugehörigen Laufbahnen 17.1 , 18.1 im Käfig 19 geführte Lagerkugeln 20 abwälzen. Zur Befestigung an 4546-10-DE 7The thin-ring bearing 16 shown in FIG. 3 consists of the bearing inner ring 17 and the bearing outer ring 18, between which bearing balls 20 guided in the cage 19 on associated raceways 17.1, 18.1 roll. For attachment 4546-10-EN 7
einer Anschlusskonstruktion ist der Lagerinnenring 17 mit dem radial nach in¬ nen gerichteten Flansch 17.2 versehen, der mit gleichmäßig um den Umfang angeordneten Befestigungsbohrungen 17.3 ausgestattet ist. In diesem Ausfüh¬ rungsbeispiel ist die elastisch nachgiebige Laufbahnwölbung 21.1 von einem elastischen Element 21 in Form eines federnden Ringes gebildet, der in eine Nut im Lageraußenring 18 eingelegt ist.a connecting construction of the bearing inner ring 17 is provided with the radially in¬ NEN directed flange 17.2, which is equipped with evenly arranged around the circumference mounting holes 17.3. In this exemplary embodiment, the elastically yielding raceway convexity 21. 1 is formed by an elastic element 21 in the form of a resilient ring which is inserted into a groove in the bearing outer ring 18.
Das in Figur 4 gezeigte Dünnringlager 22 besteht aus dem Lagerinnenring 23 und dem Lageraußenring 24, zwischen denen auf zugehörigen Laufbahnen 23.1 , 24.1 im Käfig 25 geführte Lagerkugeln 26 abrollen. Der Lagerinnenring 23 ist mit dem radial nach innen gerichteten Flansch 23.2 ausgestattet. Der Lager¬ außenring 24 weist wiederum an drei voneinander beabstandeten Umfangsstel- lungen radial nach innen gerichtete Laufbahnwölbungen auf, so daß in diesem Bereich die Lagerkugeln 26 sowohl an der Innenlaufbahn 23.1 als auch an der Außenlaufbahn 24.1 anliegen. Der mit einem Schlitz versehene Lageraußen¬ ring 24 ist von der Hülse 27 aufgenommen, deren radial nach außen gerichteter Flansch 27.1 aus zwei in axialer Richtung zueinander versetzten Bereichen besteht, die mit Befestigungsbohrungen 27.2 versehen sind.The thin-section bearing 22 shown in FIG. 4 consists of the bearing inner ring 23 and the bearing outer ring 24, between which bearing balls 26 guided in the cage 25 on associated raceways 23.1, 24.1 roll. The bearing inner ring 23 is equipped with the radially inwardly directed flange 23.2. The Lager¬ outer ring 24 in turn at three spaced peripheral positions radially inwardly directed career curvatures, so that in this area the bearing balls 26 abut both on the inner race 23.1 and on the outer race 24.1. The provided with a slot Lageraußen¬ ring 24 is received by the sleeve 27, the radially outwardly directed flange 27.1 consists of two mutually offset in the axial direction of areas, which are provided with mounting holes 27.2.
In Figur 5 ist schließlich in schematischer Darstellung eine Lenkanordnung ge¬ zeigt, bei der ein Lenkrad 28 drehfest mit einer Lenkspindel 29 verbunden ist, die über zwei voneinander beabstandete Wälzlager 30, 31 in einem LenkrohrFinally, FIG. 5 schematically shows a steering arrangement in which a steering wheel 28 is non-rotatably connected to a steering spindle 29, which has two spaced-apart rolling bearings 30, 31 in a steering tube
32 aufgenommen ist. Das Lenkrad 28 ist drehbar über ein weiteres Wälzlager32 is included. The steering wheel 28 is rotatable via another rolling bearing
33 abgestützt und nimmt in seinem Inneren den Airbag 34 auf, der über ein Dünnringlager 35 der vorstehend beschriebenen Art gelagert ist. Wird nun das Lenkrad 28 nach rechts oder nach links eingeschlagen, so dreht sich der mit ihm verbundene Lagerinnenring 35.1 mit, während der Lageraußenring 35.2 und der mit ihm verbundene Airbag 34 in seiner Position verbleibt, d.h., sich nicht bewegt. Dadurch ist sichergestellt, dass trotz unterschiedlicher Stellung des Lenkrades 28 der Airbag 34 stets in der gleichen Position verbleibt, die bei seinem Entfalten einen größtmöglichen Schutz für den Fahrer bewirkt. 4546-10- D E 833 supported and receives in its interior the airbag 34 which is mounted on a thin-ring bearing 35 of the type described above. If the steering wheel 28 is now turned to the right or to the left, the bearing inner ring 35.1 connected thereto rotates, while the bearing outer ring 35.2 and the airbag 34 connected to it remain in its position, ie, does not move. This ensures that despite different position of the steering wheel 28, the airbag 34 always remains in the same position, which causes the greatest possible protection for the driver during its deployment. 4546-10- EN 8
Bezugszeichenreference numeral
1 Lagerinnenring1 bearing inner ring
2 Welle2 wave
3 Lageraußenring3 bearing outer ring
4 Laufbahnwölbung4 career curvature
5 Käfig5 cage
6 Wälzkörper6 rolling elements
7 innere Laufbahn7 inner raceway
8 äußere Laufbahn8 outer raceway
9 Aufnahmebohrung9 receiving hole
10 Schweißstelle10 weld
11 Dünnringlager11 thin ring bearings
12 Lagerinnenring12 bearing inner ring
12.1 Laufbahn12.1 career
12.2 Flansch12.2 Flange
12.3 Befestigungsbohrung12.3 Mounting hole
13 Lageraußenring13 bearing outer ring
13.1 Laufbahn13.1 career
13.2 Laufbahnwölbung13.2 Raceway curvature
14 Käfig14 cage
15 Lagerkugel15 bearing ball
16 Dünnringlager16 thin ring bearings
17 Lagerinnenring17 bearing inner ring
17.1 Laufbahn17.1 career
17.2 Flansch17.2 Flange
17.3 Befestigungsbohrung17.3 Mounting hole
18 Lageraußenring18 bearing outer ring
18.1 Laufbahn18.1 career
19 Käfig19 cage
20 Lagerkugel20 bearing ball
21 elastisches Element21 elastic element
21.1 Laufbahnwölbung 4546-10-DE21.1 Track curvature 4546-10-EN
22 Dünnringlager22 thin ring bearings
23 Lagerinnenring23 bearing inner ring
23.1 Laufbahn23.1 career
23.2 Flansch23.2 Flange
24 Lageraußenring24 bearing outer ring
24.1 Laufbahn24.1 career
25 Käfig25 cage
26 Lagerkugel26 bearing ball
27 Hülse27 sleeve
27.1 Flansch27.1 Flange
27.2 Befestigungsbohrung27.2 Mounting hole
28 Lenkrad28 steering wheel
29 Lenkspindel29 steering spindle
30 Wälzlager30 rolling bearings
31 Wälzlager31 rolling bearings
32 Lenkrohr32 steering tube
33 Wälzlager33 rolling bearings
34 Airbag34 airbag
35 Dünnringlager35 thin ring bearings
35.1 Lagerinnenring35.1 bearing inner ring
35.2 Lageraußenring 35.2 bearing outer ring
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004050728.7 | 2004-10-19 | ||
| DE102004050728A DE102004050728A1 (en) | 2004-10-19 | 2004-10-19 | Thin section bearings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006042639A1 true WO2006042639A1 (en) | 2006-04-27 |
Family
ID=35788575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2005/010710 Ceased WO2006042639A1 (en) | 2004-10-19 | 2005-10-05 | Thin annular bearing |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102004050728A1 (en) |
| WO (1) | WO2006042639A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015200297A1 (en) | 2015-01-13 | 2016-03-31 | Schaeffler Technologies AG & Co. KG | Rolling-drive connection |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006004965A1 (en) * | 2006-02-01 | 2007-08-16 | Zf Lenksysteme Gmbh | Device for decreasing discharge of lubricant, out of roller bearing, has outer bearing ring and inner bearing ring, where rolling element is located between rings, where bearing ring ripple element is engaged in intermediate space |
| DE102008048074A1 (en) | 2008-09-19 | 2010-03-25 | Daimler Ag | Ball bearing for supporting steering column of motor vehicle, comprises inner ring and outer ring, where sleeve has mold tolerance compensation unit which is deformed radially outwards, and outer ring is arranged outside inner ring |
| DE202010008787U1 (en) | 2010-10-12 | 2012-01-17 | Rollax Gmbh & Co. Kg | Rolling bearings for a shaft |
| DE102011004904B4 (en) | 2011-03-01 | 2018-05-09 | Aktiebolaget Skf | Bearing ring and method for producing a bearing ring |
| DE102017114437A1 (en) | 2017-06-29 | 2019-01-03 | Schaeffler Technologies AG & Co. KG | Rolling bearings, in particular ball bearings |
| DE102017114436A1 (en) | 2017-06-29 | 2019-01-03 | Schaeffler Technologies AG & Co. KG | Rolling bearings, in particular ball bearings |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2139849A1 (en) * | 1971-08-09 | 1973-02-15 | Hoesch Ag | ROLLER BEARING IN LIGHTWEIGHT DESIGN |
| US3790240A (en) * | 1972-01-10 | 1974-02-05 | Nadella | Rolling bearing assembly with a reduced operational clearance |
| US5020925A (en) * | 1989-08-10 | 1991-06-04 | Nadella | Prestressed rolling radial bearing and its application particularly to automobile suspensions |
| US5839835A (en) * | 1996-11-26 | 1998-11-24 | Ina Walzlager Schaeffler Kg | Self-aligning ball bearing |
| FR2789458A1 (en) * | 1999-02-10 | 2000-08-11 | Nadella | Needle bearing structure and layout for placing steering column in car has central section allowing compensation of radial clearance in bearing and end section centering bearing on support |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1305131A (en) * | 1918-11-25 | 1919-05-27 | Karl Oskar Leon | Ball-bearing. |
| DE690802C (en) * | 1936-03-03 | 1940-05-08 | Franz Knoebel Jun | Process for the production of ball turning rings |
| US2370173A (en) * | 1941-08-25 | 1945-02-27 | Elizabeth B Dickson | Antifriction bearing |
| US3009748A (en) * | 1958-07-24 | 1961-11-21 | Roulements A Aiguilles Sa | Accurately centered anti-friction bearing assembly |
| US3387900A (en) * | 1964-10-06 | 1968-06-11 | Skf Ind Inc | Rolling bearing assemblies |
| FR2036443A5 (en) * | 1969-03-14 | 1970-12-24 | Pitner Alfred | |
| DE6922499U (en) * | 1969-06-06 | 1970-12-10 | Motoren Turbinen Union | NON-SLIP ROLLING ROLLING BEARING FOR HIGH SPEED RUNNING AND LOW LOADED SHAFTS |
| FR2233885A6 (en) * | 1973-05-16 | 1975-01-10 | Roulements Soc Nouvelle | |
| DD139012B1 (en) * | 1978-09-28 | 1980-10-01 | Adolf Hirt | METHOD FOR PRODUCING LARGE BALL BEARING RINGS, ESPECIALLY FOR STEERING CRANKS OF VEHICLE EQUIPMENT |
| DE2909658C2 (en) * | 1979-03-12 | 1982-09-09 | Louis 2000 Hamburg Pohl | Three-point ball bearings |
| DE4224992A1 (en) * | 1992-07-29 | 1994-02-03 | Schaeffler Waelzlager Kg | Radial ball bearing without play |
| DE9403308U1 (en) * | 1994-02-28 | 1994-04-28 | INA Wälzlager Schaeffler KG, 91074 Herzogenaurach | Differential gear for a motor vehicle |
| DE19908158A1 (en) * | 1999-02-25 | 2000-08-31 | Schaeffler Waelzlager Ohg | Bearing unit for drive shaft of car comprises ball bearings held between recesses in shaft and second set of recesses on housing fitted over them with ring which can be moved to adjust degree of play of at least one of ball bearings |
| DE19922914A1 (en) * | 1999-05-20 | 2000-11-23 | Schaeffler Waelzlager Ohg | Rolling bearing for a steering shaft for motor vehicles comprises a tolerance ring made of an electrically conductive polymer material |
-
2004
- 2004-10-19 DE DE102004050728A patent/DE102004050728A1/en not_active Withdrawn
-
2005
- 2005-10-05 WO PCT/EP2005/010710 patent/WO2006042639A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2139849A1 (en) * | 1971-08-09 | 1973-02-15 | Hoesch Ag | ROLLER BEARING IN LIGHTWEIGHT DESIGN |
| US3790240A (en) * | 1972-01-10 | 1974-02-05 | Nadella | Rolling bearing assembly with a reduced operational clearance |
| US5020925A (en) * | 1989-08-10 | 1991-06-04 | Nadella | Prestressed rolling radial bearing and its application particularly to automobile suspensions |
| US5839835A (en) * | 1996-11-26 | 1998-11-24 | Ina Walzlager Schaeffler Kg | Self-aligning ball bearing |
| FR2789458A1 (en) * | 1999-02-10 | 2000-08-11 | Nadella | Needle bearing structure and layout for placing steering column in car has central section allowing compensation of radial clearance in bearing and end section centering bearing on support |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015200297A1 (en) | 2015-01-13 | 2016-03-31 | Schaeffler Technologies AG & Co. KG | Rolling-drive connection |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004050728A1 (en) | 2006-04-20 |
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