DE102008049799A1 - Freewheel, has clamping bodies loaded by springs in circumferential direction, where springs defined by clamping ramps, which are formed at inner ring and cage elements are integrally manufactured with inner ring and formed as cage bars - Google Patents

Freewheel, has clamping bodies loaded by springs in circumferential direction, where springs defined by clamping ramps, which are formed at inner ring and cage elements are integrally manufactured with inner ring and formed as cage bars Download PDF

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Publication number
DE102008049799A1
DE102008049799A1 DE102008049799A DE102008049799A DE102008049799A1 DE 102008049799 A1 DE102008049799 A1 DE 102008049799A1 DE 102008049799 A DE102008049799 A DE 102008049799A DE 102008049799 A DE102008049799 A DE 102008049799A DE 102008049799 A1 DE102008049799 A1 DE 102008049799A1
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DE
Germany
Prior art keywords
inner ring
cage
clamping
freewheel
springs
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.)
Withdrawn
Application number
DE102008049799A
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German (de)
Inventor
Frieder Altmann
Swen DÖRRIE
Nicole Zettner
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Schaeffler Technologies AG and Co KG
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Schaeffler KG
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Publication date
Application filed by Schaeffler KG filed Critical Schaeffler KG
Priority to DE102008049799A priority Critical patent/DE102008049799A1/en
Publication of DE102008049799A1 publication Critical patent/DE102008049799A1/en
Withdrawn legal-status Critical Current

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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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
    • F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
    • F16D41/066—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
    • F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
    • F16D41/066—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical
    • F16D2041/0665—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical characterised by there being no cage other than the inner and outer race for distributing the intermediate members

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

Abstract

The freewheel has clamping bodies i.e. clamping sleeves such as clamping rollers, that are guided between an inner ring (1) and an outer ring using cage elements. The outer ring is concentric to the inner ring. The cage elements are integrally manufactured with the inner ring. The clamping bodies are loaded by springs in a circumferential direction and arranged in cavities. The springs are defined by clamping ramps (2) that are formed at the inner ring, where the cage elements are formed as cage bars (5).

Description

Gebiet der ErfindungField of the invention

Freilauf mit Klemmkörpern, wie Klemmhülsen, Klemmrollen oder dergleichen, die zwischen einem Innenring und einem dazu konzentrisch angeordneten Außenring mit Hilfe von Käfigelementen, die einstückig mit dem Innenring hergestellt sind, geführt sind, wobei die Klemmkörper von Federn in Umfangsrichtung belastet und in Räumen angeordnet sind, die durch je eine Klemmrampe begrenzt sind.freewheel with clamping bodies, such as clamping sleeves, pinch rollers or the like, between an inner ring and one concentric thereto arranged outer ring by means of cage elements, the made in one piece with the inner ring, guided are, wherein the clamping body of springs in the circumferential direction loaded and arranged in spaces, each by a Clamp ramp are limited.

Hintergrund der ErfindungBackground of the invention

Ein derartiger gattungsbildender Freilauf ist aus der DE-10 2005 034 039 A1 bekannt. Der auch als Hülsen-/Rollen-Freilauf bekannte Stand der Technik ist so ausgebildet, dass die Klemmrampen am Außenring angeordnet sind. Die Käfigelemente, die gemäß den Abbildungen am Außenring angeordnet sind, sollen auch gemäß Aussagen im o. a. Dokument am Innenring angeordnet werden können.Such a generic type freewheel is from the DE-10 2005 034 039 A1 known. The well-known as a sleeve / roller freewheel prior art is designed so that the clamping ramps are arranged on the outer ring. The cage elements, which are arranged according to the figures on the outer ring should also be able to be arranged according to statements in the above document on the inner ring.

Ein solcher Freilauf ist nur für geringere Momente und geringere Drehzahlen geeignet, weil der Außenring durch Kerben an den Übergängen zwischen den Klemmrampen geschwächt und zusätzlich mit den Fliehkräften der Klemmkörper belastet ist. Insofern ist dieser Freilauf nicht für hohe Drehzahlen und hohe Drehmomente geeignet. Weiterhin sind die Käfigelemente etwa L-förmig ausgebildet, so dass sie zumindest an zwei Stellen umgebogen werden müssen, um passend zu den Klemmrampen als Stützen für die Federn und ggf. die Klemmkörper zu dienen. Insofern ist der Aufwand, die Käfigelemente passend zu biegen und in Zwischenpositionen zu justieren, nicht unerheblich. Es besteht auch die Gefahr, dass sie abbrechen, so dass der Ausschuss, der die Außenringe mit betrifft, nicht unerheblich ist.One such freewheel is only for lesser moments and lower Speeds suitable because of the outer ring by notches weakened the transitions between the clamping ramps and additionally with the centrifugal forces of the clamping body is charged. In this respect, this freewheel is not for high Speeds and high torques suitable. Furthermore, the cage elements approximately L-shaped, so that they are at least two Locations need to be bent over to match the clamping ramps as supports for the springs and possibly the clamp body to serve. In this respect, the effort, the cage elements fits bending and adjusting in intermediate positions, not insignificant. There is also a risk that they will break off, leaving the committee, the outer rings is concerned with, is not insignificant.

Aufgabe der ErfindungObject of the invention

Aufgabe der Erfindung ist es daher, die beschriebenen Nachteile des Standes der Technik zu beheben und einen Freilauf zu schaffen, der selbst bei hohen Drehzahlen ein sicheres Schalten gewährleistet. Darüber hinaus soll der Freilauf auch für alle Anwendungen geeignet sein, bei denen ein hohes Drehmoment, beispielsweise mehr als 100 Nm, gefordert wird.task The invention is therefore the disadvantages of the prior art described to fix the technique and to create a freewheel that even at ensures a safe switching at high speeds. About that In addition, the freewheel should also be suitable for all applications be where high torque, for example, more than 100 Nm, is required.

Zusammenfassung der ErfindungSummary of the invention

Die Aufgabe der Erfindung wird dadurch gelöst, dass die Klemmrampen am Innenring angeordnet sind und dass die Käfigelemente als Käfigstege ausgebildet sind. Dabei sollen die Käfigstege einen rechtwinkligen, vorzugsweise quadratischen Querschnitt aufweisen und die Wände sollen im Wesentlichen parallel ausgeführt sein. Durch diese Ausgestaltung der Erfindung wird sowohl der Innenring als auch der Außenring entlastet, da der Außenring keine Kerben mehr aufweist und die Kerben zwischen den Rampen am Innenring erheblich weniger beansprucht sind, da auch die Fliehkräfte der Wälzkörper, die bei höheren Drehzahlen beachtlich sind, an den Rampen des Innenringes wegfallen.The The object of the invention is achieved in that the clamping ramps are arranged on the inner ring and that the cage elements are designed as cage webs. Here are the cage bars have a rectangular, preferably square cross-section and the walls should be essentially parallel be. By this embodiment of the invention, both the inner ring as well as the outer ring relieved, since the outer ring has no more notches and the notches between the ramps on Inner ring are significantly less stressed, as well as the centrifugal forces the rolling elements at higher speeds are remarkable, fall away at the ramps of the inner ring.

Der Innenring weist in vorteilhafter Weise zumindest auf einer Seite einen nach außen gerichteten Konturring auf, an dem die Käfigstege angeformt sind, wobei die Käfigstege durch ein einfaches einmaliges Umbiegen parallel zur Achse des Freilaufes umgeformt werden. Auch der Konturring ist einstückig mit dem Innenring hergestellt. In vorteilhafter Weise ist auch auf der gegenüberliegenden Seite des Innenringes ein Konturring angeformt, so dass sich durch die Konturringe auch eine axiale Führung der Klemmkörper durch den Innenring ergibt.Of the Inner ring has advantageously at least on one side an outwardly directed contour ring on which the Caged bars are formed, with the cage bars formed by a simple single bending parallel to the axis of the freewheel become. The contour ring is also integral with the inner ring produced. In an advantageous way is also on the opposite Side of the inner ring formed a contour ring, so that through the contour rings also an axial guidance of the clamping body through the inner ring.

Hergestellt kann der Gegenstand der Erfindung werden, in dem der Innenring nebst Konturring und einer am Konturring angeformten Hülse spanlos, beispielsweise durch Tiefziehen, spanlos bearbeitet wird und dass die Käfigstege aus der Hülse ausgeschnitten und anschließend umgebogen werden.Produced can be the subject of the invention, in which the inner ring together Contour ring and molded on the contour ring sleeve without cutting, for example by deep drawing, without cutting and that the cage bars cut out of the sleeve and then be bent over.

Durch die erfinderische Ausgestaltung ergibt sich ein Freilauf, der einfach und kostengünstig in der Herstellung ist und für hohe Drehzahlen und hohe Drehmomente eingesetzt werden kann.By the inventive design results in a freewheeling, easy and is inexpensive to manufacture and for high speeds and high torques can be used.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Zur weiteren Erläuterung der Erfindung wird auf die Zeichnungen verwiesen, in denen ein Ausführungsbeispiel der Erfindung vereinfacht dargestellt ist. Es zeigen:to Further explanation of the invention is based on the drawings referenced, in which an embodiment of the invention is shown simplified. Show it:

1: eine perspektivische Ansicht eines Innenringes mit angeformten und passend gebogenen Käfigstegen, 1 a perspective view of an inner ring with integrally formed and suitably curved cage webs,

2: eine perspektivische Ansicht des Innenringes gemäß 1 aus einer anderen Sicht und 2 a perspective view of the inner ring according to 1 from another point of view and

3: einen Innenring gemäß 1, bei dem Klemmkörper und Federn zwischen den Käfigstegen eingebaut sind. 3 : an inner ring according to 1 in which sprags and springs are installed between the cage bars.

Detaillierte Beschreibung der ZeichnungenDetailed description the drawings

In den 1 bis 3 ist, soweit im Einzelnen dargestellt, mit 1 ein Innenring bezeichnet, der auf seinem Außenumfang Klemmrampen 2 aufweist. Auf beiden Seiten des Innenringes 1 sind Konturringe 3 und 4 angeformt, wobei an dem Konturring 4 zusätzlich Käfigstege 5 angeformt sind, die nach dem Ausstanzen aus einer Hülse etwa parallel zur Achse des Innenringes 1 umgeformt sind.In the 1 to 3 is, as far as shown in detail, with 1 an inner ring called, on its outer circumference clamping ramps 2 having. On both sides of the inner ring 1 are contour rings 3 and 4 formed, wherein at the contour ring 4 additionally cage bars 5 are formed, which after punching out of a sleeve approximately parallel to the axis of the inner ring 1 are transformed.

Die Käfigstege 5 sind über den Umfang des Innenringes 1 passend zu den Klemmrampen 2 verteilt angeordnet. Sie dienen, wie 3 zu entnehmen ist, als Käfigersatz und sind in der Lage sowohl Klemmkörper, die in 3 als Klemmrollen 6 ausgebildet sind, als auch Federn 7 zu halten und zu führen. Die Federn 7 sind aus Stahlblech hergestellt und Z-förmig so geformt, dass die Endlaschen sich einerseits an den Käfigstegen 5 abstützen und andererseits die Klemmrollen 6 außermittig belasten.The cage bars 5 are about the circumference of the inner ring 1 suitable for the clamping ramps 2 arranged distributed. They serve, like 3 can be seen as a cage set and are capable of both clamping body, which in 3 as pinch rollers 6 are formed, as well as springs 7 to hold and guide. The feathers 7 are made of sheet steel and Z-shaped so that the end tabs on the one hand on the cage webs 5 support and on the other hand, the pinch rollers 6 load off-center.

11
Innenringinner ring
22
Klemmrampenclamping ramps
33
Konturringcontour ring
44
Konturringcontour ring
55
Käfigstegecage webs
66
Klemmrollenclamping rollers
77
Federnfeathers

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • - DE 102005034039 A1 [0002] DE 102005034039 A1 [0002]

Claims (6)

Freilauf mit Klemmkörpern, wie Klemmhülsen, Klemmrollen (6) oder dergleichen, die zwischen einem Innenring (1) und einem dazu konzentrisch angeordneten Außenring mit Hilfe von Käfigelementen, die einstückig mit dem Innenring (1) hergestellt sind, geführt sind, wobei die Klemmkörper von Federn (7) in Umfangsrichtung belastet und in Räumen angeordnet sind, die durch je eine Klemmrampe (2) begrenzt sind, dadurch gekennzeichnet, dass die Klemmrampen (2) am Innenring (1) angeformt sind und dass die Käfigelemente als Käfigstege (5) ausgebildet sind.Freewheel with sprags, such as clamping sleeves, pinch rollers ( 6 ) or the like between an inner ring ( 1 ) and a concentrically arranged outer ring by means of cage elements, which are integral with the inner ring ( 1 ) are guided, wherein the clamping body of springs ( 7 ) are loaded in the circumferential direction and arranged in spaces, each by a clamping ramp ( 2 ) are limited, characterized in that the clamping ramps ( 2 ) on the inner ring ( 1 ) are formed and that the cage elements as cage bars ( 5 ) are formed. Freilauf nach Anspruch 1, dadurch gekennzeichnet, dass der Innenring (1) zumindest auf einer Seite einen nach außen gerichteten Konturring (4) aufweist, an dem die Käfigstege (5) angeformt sind, und dass die Käfigstege (5) etwa parallel zur Achse des Freilaufes umgeformt sind.Freewheel according to claim 1, characterized in that the inner ring ( 1 ) at least on one side an outwardly directed contour ring ( 4 ), on which the cage webs ( 5 ) are formed, and that the cage webs ( 5 ) are formed approximately parallel to the axis of the freewheel. Freilauf nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der Konturring (4) einstückig mit dem Innenring (1) hergestellt ist.Freewheel according to one of claims 1 or 2, characterized in that the contour ring ( 4 ) in one piece with the inner ring ( 1 ) is made. Freilauf nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Käfigstege (5) einen rechtwinkligen, vorzugsweise quadratischen Querschnitt aufweisen und die Wände im Wesentlichen parallel ausgeführt sind.Freewheel according to one of claims 1 to 3, characterized in that the cage webs ( 5 ) have a rectangular, preferably square cross-section and the walls are made substantially parallel. Freilauf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Innenring (1) nebst Konturring (4) und einer am Konturring (4) angeformten Hülse durch spanloses Umformen, zum Beispiel durch Tiefziehen, hergestellt ist und dass die Käfigstege (5) aus der Hülse ausgeschnitten sind.Freewheel according to one of the preceding claims, characterized in that the inner ring ( 1 ) and contour ring ( 4 ) and one at the contour ring ( 4 ) molded sleeve by non-cutting forming, for example by deep drawing, is manufactured and that the cage webs ( 5 ) are cut out of the sleeve. Freilauf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Innenring (1) beidseitig einen Konturring (3 und 4) aufweist.Freewheel according to one of the preceding claims, characterized in that the inner ring ( 1 ) a contour ring on both sides ( 3 and 4 ) having.
DE102008049799A 2008-09-30 2008-09-30 Freewheel, has clamping bodies loaded by springs in circumferential direction, where springs defined by clamping ramps, which are formed at inner ring and cage elements are integrally manufactured with inner ring and formed as cage bars Withdrawn DE102008049799A1 (en)

Priority Applications (1)

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DE102008049799A DE102008049799A1 (en) 2008-09-30 2008-09-30 Freewheel, has clamping bodies loaded by springs in circumferential direction, where springs defined by clamping ramps, which are formed at inner ring and cage elements are integrally manufactured with inner ring and formed as cage bars

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DE102008049799A DE102008049799A1 (en) 2008-09-30 2008-09-30 Freewheel, has clamping bodies loaded by springs in circumferential direction, where springs defined by clamping ramps, which are formed at inner ring and cage elements are integrally manufactured with inner ring and formed as cage bars

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012208057A1 (en) 2012-05-14 2013-11-14 Schaeffler Technologies AG & Co. KG Freewheel cage
DE102012217927A1 (en) 2012-10-01 2014-04-03 Schaeffler Technologies Gmbh & Co. Kg Free wheel for belt drive has clamping ramp having intermediate ring with radially movable ring segments between drive element and output element, which produce frictional connection with output element in load direction of rotation
WO2014082632A1 (en) 2012-11-29 2014-06-05 Schaeffler Technologies AG & Co. KG Freewheel cage
DE102013206811A1 (en) 2013-04-16 2014-10-16 Schaeffler Technologies Gmbh & Co. Kg freewheel
US20150034442A1 (en) * 2013-08-01 2015-02-05 Borgwarner Inc. Freewheel and freewheel arrangement
DE102014209637A1 (en) 2014-05-21 2015-11-26 Schaeffler Technologies AG & Co. KG freewheel
DE102014210871A1 (en) 2014-06-06 2015-12-17 Schaeffler Technologies AG & Co. KG Freewheel cage
DE102017107691A1 (en) 2017-04-10 2018-10-11 Schaeffler Technologies AG & Co. KG One-way clutch and gearbox with the one-way clutch
DE102017130633A1 (en) 2017-12-20 2019-06-27 Schaeffler Technologies AG & Co. KG One-way clutch and method for switching the one-way clutch
DE102018130250A1 (en) 2018-11-29 2020-06-04 Schaeffler Technologies AG & Co. KG Switchable one-way clutch
DE102020117125A1 (en) 2020-06-30 2021-12-30 Schaeffler Technologies AG & Co. KG Switchable overrunning clutch
WO2022078550A1 (en) * 2020-10-15 2022-04-21 Schaeffler Technologies AG & Co. KG Freewheel unit comprising a freewheel ring and a separate ramp support

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005034039A1 (en) 2005-07-21 2007-01-25 Schaeffler Kg One-way roller clutch with inner and outer ring, comprises integrated segments bent in order to form cage

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005034039A1 (en) 2005-07-21 2007-01-25 Schaeffler Kg One-way roller clutch with inner and outer ring, comprises integrated segments bent in order to form cage

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012208057A1 (en) 2012-05-14 2013-11-14 Schaeffler Technologies AG & Co. KG Freewheel cage
DE102012217927A1 (en) 2012-10-01 2014-04-03 Schaeffler Technologies Gmbh & Co. Kg Free wheel for belt drive has clamping ramp having intermediate ring with radially movable ring segments between drive element and output element, which produce frictional connection with output element in load direction of rotation
WO2014082632A1 (en) 2012-11-29 2014-06-05 Schaeffler Technologies AG & Co. KG Freewheel cage
DE102012221846A1 (en) 2012-11-29 2014-06-05 Schaeffler Technologies Gmbh & Co. Kg Freewheel cage
DE102013206811A1 (en) 2013-04-16 2014-10-16 Schaeffler Technologies Gmbh & Co. Kg freewheel
WO2014169905A1 (en) 2013-04-16 2014-10-23 Schaeffler Technologies Gmbh & Co. Kg Free wheel
DE102013206811B4 (en) 2013-04-16 2021-12-16 Schaeffler Technologies AG & Co. KG Freewheel
EP2840274A3 (en) * 2013-08-01 2015-12-02 Borgwarner Inc. Free-wheeling and free-wheeling assembly with a free-wheeling mechanism of this type
US9726235B2 (en) * 2013-08-01 2017-08-08 Borgwarner Inc. Freewheel and freewheel arrangement
US20150034442A1 (en) * 2013-08-01 2015-02-05 Borgwarner Inc. Freewheel and freewheel arrangement
DE102014209637A1 (en) 2014-05-21 2015-11-26 Schaeffler Technologies AG & Co. KG freewheel
DE102014210871A1 (en) 2014-06-06 2015-12-17 Schaeffler Technologies AG & Co. KG Freewheel cage
DE102017107691A1 (en) 2017-04-10 2018-10-11 Schaeffler Technologies AG & Co. KG One-way clutch and gearbox with the one-way clutch
DE102017130633A1 (en) 2017-12-20 2019-06-27 Schaeffler Technologies AG & Co. KG One-way clutch and method for switching the one-way clutch
DE102018130250A1 (en) 2018-11-29 2020-06-04 Schaeffler Technologies AG & Co. KG Switchable one-way clutch
DE102020117125A1 (en) 2020-06-30 2021-12-30 Schaeffler Technologies AG & Co. KG Switchable overrunning clutch
WO2022078550A1 (en) * 2020-10-15 2022-04-21 Schaeffler Technologies AG & Co. KG Freewheel unit comprising a freewheel ring and a separate ramp support

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