DE102007006517A1 - Roller freewheel has outer ring that is formed as non-cutting transformed plate, cylindrical outer surface and inner surface with clamping ramps - Google Patents
Roller freewheel has outer ring that is formed as non-cutting transformed plate, cylindrical outer surface and inner surface with clamping ramps Download PDFInfo
- Publication number
- DE102007006517A1 DE102007006517A1 DE102007006517A DE102007006517A DE102007006517A1 DE 102007006517 A1 DE102007006517 A1 DE 102007006517A1 DE 102007006517 A DE102007006517 A DE 102007006517A DE 102007006517 A DE102007006517 A DE 102007006517A DE 102007006517 A1 DE102007006517 A1 DE 102007006517A1
- Authority
- DE
- Germany
- Prior art keywords
- roller freewheel
- cage
- outer ring
- freewheel according
- clamping ramps
- 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
- 239000002184 metal Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 210000003746 feather Anatomy 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
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
- F16D41/067—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 and the members being distributed by a separate cage encircling the axis of rotation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Gebiet der ErfindungTerritory of invention
Die Erfindung betrifft einen insbesondere für Drehmomentwandler sowie für Automatikgetriebe geeigneten, darüber hinaus auch im Industriebereich einsetzbaren Rollenfreilauf.The The invention relates to a torque converter which is suitable in particular for automatic torque converters and for automatic transmissions. about that In addition, also usable in the industrial sector roller freewheel.
Hintergrund der Erfindungbackground the invention
Ein
Rollenfreilauf ist beispielsweise aus der
Aufgabe der Erfindungtask the invention
Der Erfindung liegt die Aufgabe zugrunde, eine besonders flexibel verwendbare, raumsparend aufgebaute Klemmrollenfreilaufkupplung anzugeben.Of the Invention is based on the object, a particularly flexible usable, Specify space-saving clamping roller freewheel coupling.
Zusammenfassung der ErfindungSummary the invention
Diese Aufgabe wird erfindungsgemäß gelöst durch einen Rollenfreilauf mit den Merkmalen des Anspruchs 1. Der Rollenfreilauf weist einen als Blechumformteil gefertigten Außenring auf, auf dessen Innenseite Klemmrampen ausgebildet sind, während die äußere Oberfläche des Außenrings zylindrisch ist. Unter einer zylindrischen Oberfläche wird auch eine Oberfläche mit Riffelung verstanden, jedoch keine Oberfläche, die eine Klemmrampenform zeigt. Die zylindrische äußere Form des Außenrings ermöglicht es, diesen in eine Bohrung eines kraftaufnehmenden Anschlussteils einzusetzen. Spezielle Anschlusskonstruktionen mit der Klemmrampenform angepasster Kontur sind nicht erforderlich.These The object is achieved by a roller freewheel with the features of claim 1. The roller freewheel has an outer ring made as a sheet metal forming part, on the inside Clamping ramps are formed while the outer surface of the outer ring is cylindrical. Under a cylindrical surface will also a surface with ribbing, but no surface showing a clamp ramp shape. The cylindrical outer shape the outer ring makes it possible to insert this into a bore of a force receiving connector. Special connection constructions adapted to the clamping ramp shape Contour are not required.
Der Außenring weist in bevorzugter Ausgestaltung auf dessen Innenseite jeweils zwischen zwei Klemmrampen eine axialer Richtung verlaufende rillenförmige Vertiefung, auch als Fertigungsrille oder Axialrille bezeichnet, auf. Im Gegensatz zu den Klemmrampen sind die Axialrillen jeweils symmetrisch zu einer Ebene, in welcher die Rotationsachse des Rollenfreilaufs liegt, ausgebildet. Die Außenoberfläche des Außenrings weicht im Bereich der Axialrillen nicht von der zylindrischen Form ab. Die Erstreckung einer Axialrille in Umfangsrichtung ist vorzugsweise geringer als die Erstreckung einer Klemmrampe in der selben Richtung. Die durch die Axialrillen gegebene Minderung der Wandstärke des Außenrings ist mit der Reduktion der Wandstärke des Außenring durch die Einformung der Klemmrampen vergleichbar. Vorzugsweise weicht die minimale Wandstärke des Außenrings im Bereich einer Axialrille von der minimalen J Wandstärke des Außenrings im Bereich einer Klemmrampe um nicht mehr als 20 % ab. In Umfangsrichtung betrachtet, sind in bevorzugter Ausgestaltung mehr als 70 % der Innenoberfläche des Außenrings durch Klemmrampen oder Axialrillen gebildet. Überraschenderweise hat sich gezeigt, dass die Axialrillen wesentlich zur Verbesserung der Rundheit der Außenoberfläche des Außenrings beitragen. Dies wiederum erhöht die Lebensdauer des Rollenfreilaufs.Of the outer ring has in a preferred embodiment on the inside of each between two clamping ramps an axially extending groove-shaped depression, also referred to as production groove or axial groove on. In contrast to the clamping ramps, the axial grooves are each symmetrical to a Plane in which the rotational axis of the roller freewheel is located, educated. The outer surface of the outer ring does not deviate from the cylindrical shape in the area of the axial grooves from. The extent of an axial groove in the circumferential direction is preferably less than the extension of a clamping ramp in the same direction. The reduction in the wall thickness of the wall due to the axial grooves outer ring is with the reduction of wall thickness of the outer ring comparable by the indentation of the clamping ramps. Preferably gives way to the minimum wall thickness of the outer ring in the range of an axial groove of the minimum J wall thickness of Outer ring in the Range of a clamping ramp by no more than 20%. In the circumferential direction considered, in a preferred embodiment more than 70% of inner surface of the outer ring formed by clamping ramps or axial grooves. Surprisingly, it has been shown that the axial grooves significantly improve the roundness of the Outside surface of the outer ring contribute. This in turn increases the life of the roller freewheel.
Innerhalb des Außenrings befinden sich mehrere Klemmrollen, die mittels eines Käfigs geführt sind. Der Käfig ist drehfest, insbesondere formschlüssig im Außenring angeordnet, wobei vorzugsweise die Außenkontur des Käfigs der Klemmrampenkontur des Außenrings angepasst ist. Zur Anfederung der Klemmrollen sind Federn, vorzugsweise Einzelblattfedern, insbesondere Blattfedern mit Dreieckform, vorgesehen, die am Käfig befestigt sind. Dadurch, dass der Käfig relativ zum Außenring nicht drehbar ist, sind stets gleich bleibende Anfederungseigenschaften gegeben.Within of the outer ring There are several pinch rollers, which are guided by a cage. The cage is rotationally fixed, in particular arranged in a form-fitting manner in the outer ring, wherein preferably the outer contour of the cage the clamping ramp contour of the outer ring is adjusted. For springing the pinch rollers springs, preferably single leaf springs, in particular leaf springs with triangular shape, provided, attached to the cage are. Because of the cage relative to the outer ring is not rotatable, are always consistent springing properties given.
Ebenso wie der Außenring ist der Käfig als spanlos umgeformtes Blechteil hergestellt. In fertigungstechnisch günstiger sowie montagefreundlicher Ausgestaltung weist der Käfig lediglich einen einzigen, an einem Bord des Außenrings anliegenden Käfigring auf. Vom Käfigring aus erstrecken sich Stege in axialer Richtung des Freilaufs, wobei an jedem Steg eine Feder zur Anfederung jeweils einer Klemmrolle befestigt ist. Vorzugsweise ist eine Schnappverbindung zwischen der Feder und dem Steg hergestellt, wobei ein Teil der Feder in eine Haltekontur, insbesondere eine Öffnung, des Steges eingreift.As well like the outer ring is the cage manufactured as a non-cutting formed sheet metal part. In manufacturing technology better as well as installation friendly design, the cage only a single, on a board of the outer ring fitting cage ring on. From the cage ring From webs extend in the axial direction of the freewheel, wherein at each bridge a spring for springing each a pinch roller is attached. Preferably, a snap connection between the spring and the bridge are made, with part of the spring in a holding contour, in particular an opening, of the web engages.
Die Stege des Käfigs bilden in vorteilhafter Ausgestaltung Anschläge für die Klemmrollen. Zugleich sind die Stege vorzugsweise derart geformt, dass stets ein Restfederweg der Federn erhalten bleibt. Zumindest ein Teil eines jeden Steges verläuft in einer radialen Ebene, d.h. in einer Ebene, die die Symmetrieachse des Rollenfreilaufs schneidet. An den in einer radialen Ebene angeordneten so genannten Mittelabschnitt eines Steges schließt sich vorzugsweise mindestens ein gegenüber dem Mittelabschnitt abgewinkelter Haltefortsatz, der insbesondere die Montage erleichtert, an. Der Haltefortsatz befindet sich in einem Bereich radial außerhalb des Mittelabschnitts.The Webs of the cage form in an advantageous embodiment stops for the pinch rollers. at the same time the webs are preferably shaped such that always a residual spring travel the springs is preserved. At least part of each footbridge runs in a radial plane, i. in a plane that is the axis of symmetry of the roller freewheel cuts. At the arranged in a radial plane so-called middle section of a bridge preferably closes at least one opposite the central portion angled holding extension, in particular the assembly facilitates. The holding process is located in an area radially outside of the middle section.
Der Käfig des Rollenfreilaufs ist bevorzugt aus einem im Wesentlichen kreisscheibenförmigen Blechrohling gefertigt, wobei der Rand des Blechrohlings Der Käfig des Rollenfreilaufs ist bevorzugt aus einem im Wesentlichen kreisscheibenförmigen Blechrohling gefertigt, wobei der Rand des Blechrohlings abweichend von einer exakten Kreisform zumindest abschnittsweise die Kontur der Klemmrampen wiedergibt. Der Käfig ist vorzugsweise aus mindestens 30%, insbesondere mindestens 50%, der Masse der verwendeten Ronde gebildet. Anders ausgedrückt: Höchstens 70% der Fläche des Blechrohlings ist nicht im Endprodukt, d.h. im Käfig, wieder zu finden.The cage of the roller freewheel is preferably made of a substantially circular disc-shaped Sheet metal blank, wherein the edge of the sheet blank The cage of the roller freewheel is preferably made of a substantially circular disc-shaped sheet metal blank, wherein the edge of the sheet metal blank at least partially reflects the contour of the clamping ramps deviating from an exact circular shape. The cage is preferably formed from at least 30%, in particular at least 50%, of the mass of the blank used. In other words: no more than 70% of the area of the sheet metal blank is not to be found in the end product, ie in the cage.
Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher erläutert. Hierin zeigen:following is an embodiment of Invention explained in more detail with reference to a drawing. Herein show:
Kurze Beschreibung der ZeichnungShort description the drawing
Ausführliche Beschreibung der ZeichnungFull Description of the drawing
Die
Der
Außenring
Die
Form des Käfigs
An
den Käfigring
Der
Außenring
- 11
- RollenfreilaufRoller freewheel
- 22
- Außenringouter ring
- 33
- KäfigCage
- 44
- Klemmrollepinch roller
- 55
- Federfeather
- 66
- Klemmrampeclamping ramp
- 77
- Außenoberflächeouter surface
- 88th
- Blechrohlingsheet metal blank
- 99
- Randedge
- 1010
- Käfigringcage ring
- 1111
- Bordshelf
- 1212
- Bordshelf
- 1313
- Stegweb
- 1414
- Öffnungopening
- 1515
- L-SchenkelL-leg
- 1616
- Innenrandinner edge
- 1717
- Mittelabschnittmidsection
- 1818
- HaltefortsatzHolding projection
- 1919
- Axialrilleaxial groove
- SS
- Symmetrieachseaxis of symmetry
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007006517A DE102007006517A1 (en) | 2006-02-18 | 2007-02-09 | Roller freewheel has outer ring that is formed as non-cutting transformed plate, cylindrical outer surface and inner surface with clamping ramps |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006007652 | 2006-02-18 | ||
| DE102006007652.4 | 2006-02-18 | ||
| DE102007006517A DE102007006517A1 (en) | 2006-02-18 | 2007-02-09 | Roller freewheel has outer ring that is formed as non-cutting transformed plate, cylindrical outer surface and inner surface with clamping ramps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102007006517A1 true DE102007006517A1 (en) | 2007-08-23 |
Family
ID=38289014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102007006517A Ceased DE102007006517A1 (en) | 2006-02-18 | 2007-02-09 | Roller freewheel has outer ring that is formed as non-cutting transformed plate, cylindrical outer surface and inner surface with clamping ramps |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102007006517A1 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009037255A1 (en) | 2009-08-12 | 2011-02-17 | Schaeffler Technologies Gmbh & Co. Kg | Roller free-wheel e.g. case or pinch roller free-wheels, for use in e.g. automatic transmission in motor vehicle sector, has springs for springing clamping rollers, where springs are arranged at cage bars extended between cage rings |
| DE102010035495A1 (en) | 2009-08-28 | 2011-04-07 | Schaeffler Technologies Gmbh & Co. Kg | Free-wheel clutch, has hollow clamping roll arranged between inner ring and outer ring and wound from wire, where outer ring has clamping ramps, inner ring has cylindrical surface and wire exhibits rectangular cross section |
| DE102011005242A1 (en) | 2011-03-08 | 2012-09-13 | Schaeffler Technologies Gmbh & Co. Kg | Pinch roll freewheel for transferring rotational torques in e.g. motor car, has spring elements impinging rolls against ramps, sleeve formed of deep-drawn pot, and bars separated from pot base and passed parallel to circumference of sleeve |
| DE102011087467A1 (en) | 2011-11-30 | 2013-06-06 | Schaeffler Technologies AG & Co. KG | Roller free-wheel for vehicle, has pinch rollers made of elastic material that are arranged between inner and outer rings to lock rings against each other, such that self-adjusting clamping gap is provided between inner and outer rings |
| 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 |
| US8852041B2 (en) | 2010-09-30 | 2014-10-07 | Shimano, Inc. | Bicycle derailleur with rotation resistance |
| DE102013206811A1 (en) | 2013-04-16 | 2014-10-16 | Schaeffler Technologies Gmbh & Co. Kg | freewheel |
| US8870692B2 (en) | 2010-09-30 | 2014-10-28 | Shimano, Inc. | Bicycle derailleur with rotation resistance |
| DE102014209637A1 (en) | 2014-05-21 | 2015-11-26 | Schaeffler Technologies AG & Co. KG | freewheel |
| DE102015221564A1 (en) | 2015-11-04 | 2017-05-04 | Schaeffler Technologies AG & Co. KG | Roller freewheel comprising a two-part cage |
| DE102015222301A1 (en) | 2015-11-12 | 2017-05-18 | Schaeffler Technologies AG & Co. KG | Roller freewheel |
| US9845134B2 (en) | 2007-08-24 | 2017-12-19 | Shimano, Inc. | Bicycle rear derailleur with a motion resisting structure |
| DE102018131872A1 (en) | 2018-12-12 | 2020-06-18 | Schaeffler Technologies AG & Co. KG | Roller freewheel |
| DE102022206120A1 (en) | 2021-06-24 | 2022-12-29 | Aktiebolaget Skf | Outer contact surface element of a freewheel, freewheel with the contact surface element and method for assembling a freewheel |
-
2007
- 2007-02-09 DE DE102007006517A patent/DE102007006517A1/en not_active Ceased
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9845134B2 (en) | 2007-08-24 | 2017-12-19 | Shimano, Inc. | Bicycle rear derailleur with a motion resisting structure |
| US10315728B2 (en) | 2007-08-24 | 2019-06-11 | Shimano, Inc. | Bicycle rear derailleur with a motion resisting structure |
| US10604212B2 (en) | 2007-08-24 | 2020-03-31 | Shimano Inc. | Bicycle rear derailleur with a motion resisting structure |
| DE102009037255A1 (en) | 2009-08-12 | 2011-02-17 | Schaeffler Technologies Gmbh & Co. Kg | Roller free-wheel e.g. case or pinch roller free-wheels, for use in e.g. automatic transmission in motor vehicle sector, has springs for springing clamping rollers, where springs are arranged at cage bars extended between cage rings |
| DE102010035495A1 (en) | 2009-08-28 | 2011-04-07 | Schaeffler Technologies Gmbh & Co. Kg | Free-wheel clutch, has hollow clamping roll arranged between inner ring and outer ring and wound from wire, where outer ring has clamping ramps, inner ring has cylindrical surface and wire exhibits rectangular cross section |
| US8852041B2 (en) | 2010-09-30 | 2014-10-07 | Shimano, Inc. | Bicycle derailleur with rotation resistance |
| US8870692B2 (en) | 2010-09-30 | 2014-10-28 | Shimano, Inc. | Bicycle derailleur with rotation resistance |
| DE102011005242A1 (en) | 2011-03-08 | 2012-09-13 | Schaeffler Technologies Gmbh & Co. Kg | Pinch roll freewheel for transferring rotational torques in e.g. motor car, has spring elements impinging rolls against ramps, sleeve formed of deep-drawn pot, and bars separated from pot base and passed parallel to circumference of sleeve |
| DE102011087467A1 (en) | 2011-11-30 | 2013-06-06 | Schaeffler Technologies AG & Co. KG | Roller free-wheel for vehicle, has pinch rollers made of elastic material that are arranged between inner and outer rings to lock rings against each other, such that self-adjusting clamping gap is provided between inner and outer rings |
| 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 |
| DE102013206811A1 (en) | 2013-04-16 | 2014-10-16 | Schaeffler Technologies Gmbh & Co. Kg | freewheel |
| DE102013206811B4 (en) | 2013-04-16 | 2021-12-16 | Schaeffler Technologies AG & Co. KG | Freewheel |
| WO2014169905A1 (en) | 2013-04-16 | 2014-10-23 | Schaeffler Technologies Gmbh & Co. Kg | Free wheel |
| DE102014209637A1 (en) | 2014-05-21 | 2015-11-26 | Schaeffler Technologies AG & Co. KG | freewheel |
| DE102015221564A1 (en) | 2015-11-04 | 2017-05-04 | Schaeffler Technologies AG & Co. KG | Roller freewheel comprising a two-part cage |
| DE102015221564B4 (en) * | 2015-11-04 | 2018-02-22 | Schaeffler Technologies AG & Co. KG | Roller freewheel comprising a two-part cage |
| DE102015222301B4 (en) * | 2015-11-12 | 2017-09-14 | Schaeffler Technologies AG & Co. KG | Roller freewheel |
| WO2017080550A1 (en) | 2015-11-12 | 2017-05-18 | Schaeffler Technologies AG & Co. KG | Roller freewheel |
| DE102015222301A1 (en) | 2015-11-12 | 2017-05-18 | Schaeffler Technologies AG & Co. KG | Roller freewheel |
| DE102018131872A1 (en) | 2018-12-12 | 2020-06-18 | Schaeffler Technologies AG & Co. KG | Roller freewheel |
| DE102022206120A1 (en) | 2021-06-24 | 2022-12-29 | Aktiebolaget Skf | Outer contact surface element of a freewheel, freewheel with the contact surface element and method for assembling a freewheel |
| US11703092B2 (en) | 2021-06-24 | 2023-07-18 | Aktiebolaget Skf | Outer contact surface element of a one-way clutch, one-way clutch including the contact surface element, and method for installing a one-way clutch |
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