DE102011076497A1 - Arrangement for coupling movable elements of switchable device for vehicle, has coupling element that is slightly tapered towards guide when mechanical stress arises in contact region between coupling element and guide in coupled state - Google Patents
Arrangement for coupling movable elements of switchable device for vehicle, has coupling element that is slightly tapered towards guide when mechanical stress arises in contact region between coupling element and guide in coupled state Download PDFInfo
- Publication number
- DE102011076497A1 DE102011076497A1 DE201110076497 DE102011076497A DE102011076497A1 DE 102011076497 A1 DE102011076497 A1 DE 102011076497A1 DE 201110076497 DE201110076497 DE 201110076497 DE 102011076497 A DE102011076497 A DE 102011076497A DE 102011076497 A1 DE102011076497 A1 DE 102011076497A1
- Authority
- DE
- Germany
- Prior art keywords
- coupling
- guide
- coupling element
- chamfer
- arrangement
- 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- Withdrawn
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
- F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0005—Deactivating valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Gebiet der ErfindungField of the invention
Die Erfindung betrifft eine Anordnung zum Koppeln zueinander beweglicher Elemente einer schaltbaren Einrichtung für ein Fahrzeug mit zumindest einer Führung in zumindest einem der Elemente, in der zumindest ein Koppelelement verschiebbar angeordnet und in herausgeschobenem Zustand an seinem aus der Führung herausgeschobenen Endabschnitt mit einem anderen Element koppelbar ist.The invention relates to an arrangement for coupling mutually movable elements of a switchable device for a vehicle with at least one guide in at least one of the elements, in which at least one coupling element slidably disposed and in pushed out state at its pushed out of the guide end portion with another element can be coupled ,
Eine derartige Anordnung ist aus
Zusammenfassung der ErfindungSummary of the invention
Der Erfindung liegt daher die Aufgabe zugrunde, bei einer Anordnung der vorgenannten Art im Koppelfall im Kontaktbereich zwischen Koppelelement und Führung auftretende mechanische Spannungsspitzen zu vermeiden. The invention is therefore based on the object to avoid occurring in an arrangement of the aforementioned type in the coupling case in the contact region between the coupling element and guide mechanical stress peaks.
Zur Lösung der Aufgabe wird vorgeschlagen, das Koppelelement an seinem in der Führung verbleibenden Endabschnitt zu seinem Ende hin zumindest abschnittsweise geringfügig verjüngt auszubilden. Durch das sich verjüngende Profil wird im Kontaktbereich die Anlage von Koppelelement und Führung verbessert und eine Vergleichmäßigung der mechanischen Spannungsverteilung erreicht. Auf diese Weise werden mechanische Spannungsspitzen an der Kontaktstelle bzw. an den Kontaktstellen sicher vermieden.To solve the problem it is proposed to form the coupling element at its end remaining in the guide end section towards its end at least partially tapered slightly. Due to the tapered profile, the system of coupling element and guide is improved in the contact area and a homogenization of the mechanical stress distribution is achieved. In this way, mechanical stress peaks at the contact point or at the contact points are reliably avoided.
Ein sich verjüngendes Profil am Koppelement lässt sich auf einfache Weise durch eine Fase erreichen. Dadurch kann an hochbelasteten Stellen im Kontaktbereich, wie insbesondere an einer Kante, beispielsweise an dem in der Führung verbleibenden Ende des Koppelelements, ein Teil der mechanische Spannung von der Kante weg zum Ansatz der Fase hin verlagert und so mechanische Spannungsspitzen geglättet werden. Zugleich wird mittels der Fase der tragende Bereich vergrößert. Denkbar ist auch, mehrere hintereinander liegende Fasen am Koppelement auszubilden, die im Profil ähnlich dem Graph einer Spline-Funktion verlaufen. A tapered profile on the coupling element can be achieved in a simple manner by a chamfer. As a result, part of the mechanical stress can be displaced away from the edge toward the shoulder of the chamfer at high-load locations in the contact region, in particular at an edge, for example at the end of the coupling element remaining in the guide, so that mechanical stress peaks can be smoothed. At the same time, the bearing area is enlarged by means of the chamfer. It is also conceivable to form a plurality of successive chamfers on the coupling element, which run in profile similar to the graph of a spline function.
Bevorzugt sind dabei zur Minimierung der mechanischen Spannungen im Kontaktbereich Fasenwinkel und Fasenlänge an die Geometrie von Führung und Koppelelement, insbesondere an das Spiel zwischen Führung und Koppelelement, angepasst. Beispielsweise kann der Fasenwinkel desto größer ausgeführt sein, je größer die Verkippung des Koppelelements in der Führung ist. Außerdem werden die mechanischen Spannungen umso mehr zum Ansatz der Fase hin verlagert je größer die Fasenlänge ist. In order to minimize the mechanical stresses in the contact region, chamfer angle and chamfer length are preferably adapted to the geometry of guide and coupling element, in particular to the clearance between guide and coupling element. For example, the chamfer angle can be made larger the greater the tilt of the coupling element in the guide. In addition, the greater the chamfer length, the more the mechanical stresses are shifted towards the base of the chamfer.
Vorzugsweise ist die Fase umlaufend am Koppelement ausgebildet. Dadurch ist sie besonders leicht herstellbar, beispielsweise durch Drehen.Preferably, the chamfer is formed circumferentially on the coupling element. As a result, it is particularly easy to produce, for example by turning.
Denkbar ist auch die Verjüngung als ein Profil aus einer Kombination von Rundung und Fase oder Rundung und Konus auszubilden. In einer besonders bevorzugten Weiterbildung der Erfindung ist zur Vermeidung eines Kantentragens die Kante am Ansatz der Fase abgerundet ausgeführt.Also conceivable is the taper as a profile of a combination of rounding and bevel or rounding and cone form. In a particularly preferred embodiment of the invention, the edge at the base of the chamfer is rounded to avoid an edge wear.
In einer alternativen Ausgestaltung weist das Koppelelement ein sich durch Krümmung verjüngendes Profil auf. Beispielsweise kann ein in Form einer Evolvente verlaufendes Profil vorgesehen sein.In an alternative embodiment, the coupling element has a profile that tapers by curvature. For example, a profile running in the form of an involute can be provided.
Die vorliegende Erfindung bezieht sich vorzugsweise auf Anordnungen zum Koppeln in schaltbaren Nockenfolgern, insbesondere schaltbaren Rollenstößeln, schaltbaren Nockenfolgergruppen bzw. schaltbaren Abstützeinrichtungen für Nockenfolger oder Nockenfolgergruppen. The present invention preferably relates to arrangements for coupling in switchable cam followers, in particular switchable roller tappets, switchable cam follower groups or switchable support devices for cam followers or cam follower groups.
Denkbar ist auch, die Erfindung in anderen schaltbaren Einrichtungen, wie z.B. in einer Nockenwellenverstellvorrichtung, in Motorbremssystemen oder auch in Pumpenantrieben einzusetzen.It is also conceivable, the invention in other switchable devices, such. in a camshaft adjusting device, in engine braking systems or in pump drives.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Weitere Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung und aus den Zeichnungen, in denen ein Ausführungsbeispiel der Erfindung vereinfacht 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 in simplified form. Show it:
Ausführliche Beschreibung der ZeichnungenDetailed description of the drawings
In
Die erfindungsgemäße Anordnung umfasst zwei im Außengehäuse diametral gegenüberliegende jeweils als eine radiale Bohrung ausgeführte Führungen
Zur Verdeutlichung zeigt
Die Fase bewirkt eine teilweise Verlagerung der an der Kante am Ende des Koppelkolbens auftretenden mechanischen Spannung zum Ansatz der Fase hin. Der Ansatz der Fase ist zur Vermeidung einer Kante mit einer ringförmig umlaufenden Rundung
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Elementelement
- 22
- Elementelement
- 33
- Führungguide
- 44
- Koppelelement coupling element
- 55
- Kontaktbereich contact area
- 66
- Rundungcurve
- 77
- Koppelzone coupling zone
- 88th
- Abstützstellesupport point
- 99
- Längsachselongitudinal axis
- 1010
- Aussparungrecess
- αα
- Fasenwinkelbevel angle
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 10360098 A1 [0002] DE 10360098 A1 [0002]
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110076497 DE102011076497A1 (en) | 2011-05-26 | 2011-05-26 | Arrangement for coupling movable elements of switchable device for vehicle, has coupling element that is slightly tapered towards guide when mechanical stress arises in contact region between coupling element and guide in coupled state |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110076497 DE102011076497A1 (en) | 2011-05-26 | 2011-05-26 | Arrangement for coupling movable elements of switchable device for vehicle, has coupling element that is slightly tapered towards guide when mechanical stress arises in contact region between coupling element and guide in coupled state |
Publications (1)
Publication Number | Publication Date |
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DE102011076497A1 true DE102011076497A1 (en) | 2012-11-29 |
Family
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DE201110076497 Withdrawn DE102011076497A1 (en) | 2011-05-26 | 2011-05-26 | Arrangement for coupling movable elements of switchable device for vehicle, has coupling element that is slightly tapered towards guide when mechanical stress arises in contact region between coupling element and guide in coupled state |
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DE (1) | DE102011076497A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10360098A1 (en) | 2003-12-20 | 2005-07-21 | Ina-Schaeffler Kg | Coupling mechanism for switchable cam follower of internal combustion engine valve train, has contact zone that is formed between piston and reception, and spaced from reception edge upon coupling between inner and outer elements |
-
2011
- 2011-05-26 DE DE201110076497 patent/DE102011076497A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10360098A1 (en) | 2003-12-20 | 2005-07-21 | Ina-Schaeffler Kg | Coupling mechanism for switchable cam follower of internal combustion engine valve train, has contact zone that is formed between piston and reception, and spaced from reception edge upon coupling between inner and outer elements |
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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: 20120828 Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140217 Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120202 Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140217 Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120202 Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120828 |
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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: 20150407 |
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R005 | Application deemed withdrawn due to failure to request examination |