DE102010011831A1 - Drive wheel for use as driving belt wheel on crankshaft for traction drive of internal combustion engine, has hub held in impeller, where contact surface is axially supported at impeller and made from wear-stable polymeric material - Google Patents
Drive wheel for use as driving belt wheel on crankshaft for traction drive of internal combustion engine, has hub held in impeller, where contact surface is axially supported at impeller and made from wear-stable polymeric material Download PDFInfo
- Publication number
- DE102010011831A1 DE102010011831A1 DE102010011831A DE102010011831A DE102010011831A1 DE 102010011831 A1 DE102010011831 A1 DE 102010011831A1 DE 102010011831 A DE102010011831 A DE 102010011831A DE 102010011831 A DE102010011831 A DE 102010011831A DE 102010011831 A1 DE102010011831 A1 DE 102010011831A1
- Authority
- DE
- Germany
- Prior art keywords
- drive wheel
- impeller
- hub
- contact surface
- polymer material
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 5
- 239000000463 material Substances 0.000 title abstract description 5
- 239000004696 Poly ether ether ketone Substances 0.000 claims abstract description 9
- 229920002530 polyetherether ketone Polymers 0.000 claims abstract description 9
- 239000002861 polymer material Substances 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000002347 wear-protection layer Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pulleys (AREA)
Abstract
Description
Gebiet der ErfindungField of the invention
Die Erfindung betrifft ein Triebrad eines Zugmitteltriebs einer Brennkraftmaschine. Das Triebrad umfasst ein mit dem Zugmittel in Eingriff stehendes Antriebsrad, eine darin aufgenommene Nabe und eine Freilaufkupplung, die mittels zwischen dem Antriebsrad und der Nabe angeordneten Sperrkörpern eine Relativverdrehung des Antriebsrads gegenüber der Nabe in einer Drehrichtung zulässt und in der anderen Drehrichtung sperrt und die einen auf der Nabe befestigten Innenring aufweist, an dessen Außenumfang die Sperrkörper angreifen und der einen radial nach außen gerichteten Bord aufweist, dessen Stirnfläche gegen eine am Antriebsrad abgestützte Anlauffläche axial anschlägt.The invention relates to a drive wheel of a traction mechanism drive of an internal combustion engine. The drive wheel comprises a driving wheel engaging with the traction means, a hub received therein, and an overrunning clutch which permits a relative rotation of the drive wheel relative to the hub in one direction of rotation by means of blocking bodies arranged between the drive wheel and the hub and locks in the other direction of rotation Has mounted on the hub inner ring, engage on the outer circumference of the locking body and having a radially outwardly directed board whose end face axially abuts against a drive surface supported on the drive wheel.
Hintergrund der ErfindungBackground of the invention
Ein derartiges Triebrad findet typischerweise Verwendung im Nebenaggregate-Riementrieb der Brennkraftmaschine, nämlich als von der Kurbelwelle angetriebenes Riemenrad des Generators, und ist aus der
Wie es aus der genannten Druckschrift ebenfalls bekannt ist, kann das Triebrad auch als antreibendes Riemenrad auf der Kurbelwelle vorgesehen sein. In diesem Fall ist die Freilaufkupplung bezüglich der zugelassenen Relativverdrehung so zu konfigurieren, dass das den Riementrieb antreibende Antriebsrad schneller als die Kurbelwelle rotieren kann.As is also known from the cited document, the drive wheel can also be provided as a driving pulley on the crankshaft. In this case, the one-way clutch is to be configured with respect to the permitted relative rotation so that the drive wheel driving the belt drive can rotate faster than the crankshaft.
Aufgabe der ErfindungObject of the invention
Der Erfindung liegt die Aufgabe zugrunde, ein Triebrad der eingangs genannten Art im Hinblick auf dessen Lebensdauer weiter zu verbessern.The invention has for its object to further improve a drive wheel of the type mentioned in terms of its life.
Zusammenfassung der ErfindungSummary of the invention
Die Lösung dieser Aufgabe ergibt sich aus den kennzeichnenden Merkmalen des Anspruchs 1, während vorteilhafte Weiterbildungen und Ausgestaltungen der Erfindung den Unteransprüchen entnehmbar sind. Demnach soll die Anlauffläche, an dem der Bord des Innenrings mit dessen Stirnfläche anschlägt, aus verschleißbeständigem Polymerwerkstoff und insbesondere aus hoch verschleiß- und temperaturbeständigem Polyetheretherketon, kurz PEEK bestehen. Abweichend vom bekannten Stand der Technik, bei dem die beiden Kontaktpartner Bord der Innenhülse und Anlauffläche am Antriebsrad metallisch sind und typischerweise aus Stahlwerkstoff bestehen, verhindert die erfindungsgemäße Metall-Polymerwerkstoff-Kontaktpaarung auch bei hohen axialen Kontaktkräften einen metallischen Abrieb an den sich relativ zueinander verdrehenden Kontaktflächen und eine Verschleiß fördernde Kontamination des in der Freilaufkupplung umlaufenden Schmiermittels mit metallischem Abrieb, der zum vorzeitigen Ausfall des Triebrads führen kann.The solution of this problem arises from the characterizing features of claim 1, while advantageous developments and refinements of the invention are the dependent claims can be removed. Accordingly, the contact surface, on which abuts the board of the inner ring with the end face, made of wear-resistant polymer material and in particular made of highly wear and temperature resistant polyetheretherketone, PEEK short. Deviating from the known state of the art, in which the two contact partners aboard the inner sleeve and contact surface on the drive wheel are metallic and typically made of steel material, the inventive metal-polymer material contact pairing prevents even at high axial contact forces a metallic abrasion at the relatively twisting contact surfaces and a wear-promoting contamination of the circulating in the one-way clutch lubricant with metallic abrasion, which can lead to premature failure of the drive wheel.
In bevorzugter Weiterbildung der Erfindung soll es sich bei der Anlauffläche um die Oberfläche einer aus dem Polymerwerkstoff bestehenden Ringscheibe handeln, die zwischen einem radial nach innen gerichteten, dem Bord axial gegenüberliegenden Vorsprung des Antriebsrads und dem Bord eingelegt ist. Alternativ kann auch eine zwischen dem Vorsprung des Antriebsrads und dem Bord eingelegte Ringscheibe aus Verbundwerkstoff wie bspw. Stahl-PEEK vorgesehen sein, die zumindest anlaufseitig mit dem Polymerwerkstoff bspw. mittels Umspritzung beschichtet ist.In a preferred embodiment of the invention, it should be at the contact surface to the surface of an existing of the polymer material annular disc, which is inserted between a radially inwardly directed, the board axially opposite projection of the drive wheel and the board. Alternatively, an inserted between the projection of the drive wheel and the board annular disc made of composite material such as. Steel PEEK be provided, which is coated at least on the start side with the polymer material, for example. By encapsulation.
Eine weitere Alternative besteht darin, dass es sich bei der Anlauffläche um eine Oberfläche einer Stützscheibe handelt, die unter Bildung eines radial nach innen gerichteten, dem Bord axial gegenüberliegenden Vorsprungs am Antriebsrad befestigt ist und die entweder aus dem Polymerwerkstoff besteht oder mit dem Polymerwerkstoff beschichtet ist. In diesem Fall ist also kein weiteres Bauteil in Form der vorstehend genannten Ringscheibe erforderlich. Vielmehr wird hierbei die im Stand der Technik bekannte Stützscheibe aus Stahlwerkstoff durch eine Stützscheibe ersetzt, die aus dem Polymerwerkstoff besteht oder zumindest anlaufseitig mit dem Polymerwerkstoff beschichtet ist.A further alternative is that the abutment surface is a surface of a support disc which is secured to the drive wheel to form a radially inwardly directed projection axially opposite the abutment and which is either made of the polymer material or coated with the polymeric material , In this case, therefore, no further component in the form of the aforementioned annular disc is required. Rather, in this case, the well-known in the art support plate made of steel material is replaced by a support disk, which consists of the polymer material or at least on the start side is coated with the polymer material.
Alternativ zu der erfindungsgemäßen Ausgestaltung, bei welcher der auf der Nabe befestigte Innenring gegen die am Antriebsrad abgestützte Anlauffläche axial anschlägt, besteht in kinematischer Umkehrung der Axiallagerung auch die Möglichkeit, einen radial nach innen gerichteten Bord eines im Antriebsrad befestigten Außenrings der Freilaufkupplung gegen eine aus verschleißbeständigem Polymerwerkstoff bestehende Anlauffläche anschlagen zu lassen, die in diesem Fall an der Nabe abgestützt oder befestigt ist. Eine derartige Konstruktion der Axiallagerung geht grundsätzlich aus der
In einer nicht erfindungsgemäßen alternativen Gestaltung kann es ferner auch vorgesehen sein, einen oder beide Kontaktpartner Bord der Innenhülse und Anlauffläche am Antriebsrad mit einer nichtpolymeren metallischen Verschleißschutzschicht oder einer diamantharten Kohlenstoffschicht, kurz DLC, zu versehen.In a non-inventive alternative design, it may also be provided, To provide one or both contact partners Bord the inner sleeve and contact surface on the drive wheel with a non-polymeric metallic wear protection layer or a diamond-hard carbon layer, short DLC.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Weitere Merkmale der Erfindung ergeben sich auch der nachfolgenden Beschreibung und aus den Zeichnungen, in denen ein Ausführungsbeispiel der Erfindung dargestellt ist. Es zeigen:Further features of the invention will become apparent from the following description and from the drawings, in which an embodiment of the invention is shown. Show it:
Ausführliche Beschreibung der ZeichnungenDetailed description of the drawings
Die Freilaufkupplung bildet somit einen Klemmrollenfreilauf mit integrierter Lagerung und bewirkt mit den Klemmrollen
Zur Befestigung der Nabe
An dessen dem Generator abgewandten ersten Ende weist der Außenring
Der Innenring
Eine nicht dargestellte Alternative zu dem gezeigten Ausführungsbeispiel besteht darin, auf die separate, zwischen dem Vorsprung
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- TriebradTriebrad
- 22
- Innenringinner ring
- 33
- Außenringouter ring
- 44
- Nabehub
- 55
- Antriebsraddrive wheel
- 6 6
- Sperrkörper/KlemmrolleBlocking body / pinch roller
- 77
- Wälzkörper/NadelrolleRolling elements / needle roller
- 88th
- KäfigCage
- 99
- Federfeather
- 1010
- Innengewindeinner thread
- 1111
- VielzahnprofilMulti-tooth profile
- 1212
- Deckelcover
- 1313
- Umfangsnutcircumferential groove
- 1414
- erster Bord des Außenringsfirst board of the outer ring
- 1515
- erster Bord des Innenringsfirst board of the inner ring
- 1616
- zweiter Bord des Außenringssecond board of the outer ring
- 1717
- Nadelkäfigneedle cage
- 1818
- RadialdichtringRadial seal
- 1919
- zweiter Bord des Innenringssecond board of the inner ring
- 2020
- Absatzparagraph
- 2121
- Anlaufflächeapproach surface
- 2222
- Ringscheibewasher
- 2323
- Vorsprung/StahlscheibeLead / steel disc
- 2424
- Absatzparagraph
- 2525
- Verstemmungcaulking
- 2626
- RadialdichtringRadial seal
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 19511188 A1 [0002] DE 19511188 A1 [0002]
- DE 202007003925 U1 [0008] DE 202007003925 U1 [0008]
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010011831.1A DE102010011831B4 (en) | 2010-03-18 | 2010-03-18 | Driving wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010011831.1A DE102010011831B4 (en) | 2010-03-18 | 2010-03-18 | Driving wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE102010011831A1 true DE102010011831A1 (en) | 2011-09-22 |
| DE102010011831B4 DE102010011831B4 (en) | 2021-12-30 |
Family
ID=44585288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102010011831.1A Active DE102010011831B4 (en) | 2010-03-18 | 2010-03-18 | Driving wheel |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102010011831B4 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013212963A1 (en) * | 2013-07-03 | 2015-01-08 | Aktiebolaget Skf | Chain or belt pulley |
| US9869365B2 (en) | 2013-08-27 | 2018-01-16 | Litens Automotive Partnership | Isolator for use with engine that is assisted or started by an MGU or a motor through an endless drive member |
| US10767724B2 (en) | 2014-08-27 | 2020-09-08 | Litens Automotive Partnership | Isolator for use with engine that is assisted or started by an MGU or a motor through an endless drive member |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19511188A1 (en) | 1994-10-22 | 1996-04-25 | Schaeffler Waelzlager Kg | Driving torque absorber with freewheel coupling for piston engine |
| DE202007003925U1 (en) | 2007-03-16 | 2007-05-24 | Schaeffler Kg | Free-wheel pulley used for a secondary drive of an internal combustion engine comprises an outer ring having a rim directed radially inward and arranged closer to a front side than the rim of the inner ring |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000283267A (en) | 1999-03-30 | 2000-10-13 | Nsk Ltd | Pulley device with built-in one-way clutch for alternator |
-
2010
- 2010-03-18 DE DE102010011831.1A patent/DE102010011831B4/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19511188A1 (en) | 1994-10-22 | 1996-04-25 | Schaeffler Waelzlager Kg | Driving torque absorber with freewheel coupling for piston engine |
| DE202007003925U1 (en) | 2007-03-16 | 2007-05-24 | Schaeffler Kg | Free-wheel pulley used for a secondary drive of an internal combustion engine comprises an outer ring having a rim directed radially inward and arranged closer to a front side than the rim of the inner ring |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013212963A1 (en) * | 2013-07-03 | 2015-01-08 | Aktiebolaget Skf | Chain or belt pulley |
| US9869365B2 (en) | 2013-08-27 | 2018-01-16 | Litens Automotive Partnership | Isolator for use with engine that is assisted or started by an MGU or a motor through an endless drive member |
| US10767724B2 (en) | 2014-08-27 | 2020-09-08 | Litens Automotive Partnership | Isolator for use with engine that is assisted or started by an MGU or a motor through an endless drive member |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010011831B4 (en) | 2021-12-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120824 Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120824 |
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| R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140214 Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140214 |
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| R012 | Request for examination validly filed |
Effective date: 20140327 |
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| R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20150402 |
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| R016 | Response to examination communication | ||
| R018 | Grant decision by examination section/examining division | ||
| R020 | Patent grant now final |