DE102014215414A1 - Clamping device with an optimized clamping element - Google Patents
Clamping device with an optimized clamping element Download PDFInfo
- Publication number
- DE102014215414A1 DE102014215414A1 DE102014215414.6A DE102014215414A DE102014215414A1 DE 102014215414 A1 DE102014215414 A1 DE 102014215414A1 DE 102014215414 A DE102014215414 A DE 102014215414A DE 102014215414 A1 DE102014215414 A1 DE 102014215414A1
- Authority
- DE
- Germany
- Prior art keywords
- clamping
- clamping element
- sliding
- internal combustion
- combustion engine
- 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- Withdrawn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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
- F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
-
- 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
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
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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
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/18—Means for guiding or supporting belts, ropes, or chains
-
- 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
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0863—Finally actuated members, e.g. constructional details thereof
- F16H2007/0872—Sliding members
-
- 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
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0889—Path of movement of the finally actuated member
- F16H2007/0893—Circular path
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
Die Erfindung betrifft eine Spannvorrichtung für einen Zugmitteltrieb einer Brennkraftmaschine, umfassend einen Tragkörper (1) an dem vorderseitig ein Gleitbelag (2) und rückseitig ein mechanisch verschiebbares Spannelement (3) angeordnet sind, wobei das Spannelement (3) zum Spannen eines an dem Gleitbelag (2) angeordneten Zugmittels mit einer an der Brennkraftmaschine ausgebildeten Stützfläche (4) zusammenwirkt. Erfindungsgemäß ist das Spannelement (3) zylindrisch ausgebildet und weist eine erste sowie eine zweite Gleitfläche (5a, 5b) auf, wobei die erste Gleitfläche (5a) an der Stützfläche (4) der Brennkraftmaschine zur Anlage kommt und die zweite Gleitfläche (5b) an dem Tragkörper (1) angeordnet ist.The invention relates to a tensioning device for a traction mechanism drive of an internal combustion engine, comprising a carrier body (1) on the front side a sliding lining (2) and the rear side a mechanically displaceable clamping element (3) are arranged, wherein the clamping element (3) for clamping a on the sliding coating ( 2) arranged traction means cooperates with a formed on the internal combustion engine supporting surface (4). According to the invention, the clamping element (3) is cylindrical and has a first and a second sliding surface (5a, 5b), wherein the first sliding surface (5a) abuts against the supporting surface (4) of the internal combustion engine and the second sliding surface (5b) abuts the support body (1) is arranged.
Description
Die Erfindung betrifft eine Spannvorrichtung für einen Zugmitteltrieb einer Brennkraftmaschine, umfassend einen Tragkörper an dem vorderseitig ein Gleitbelag und rückseitig ein mechanisch verschiebbares Spannelement angeordnet sind, wobei das Spannelement zum Spannen eines an dem Gleitbelag angeordneten Zugmittels mit einer an der Brennkraftmaschine ausgebildeten Stützfläche zusammenwirkt.The invention relates to a tensioning device for a traction mechanism drive of an internal combustion engine, comprising a support body on the front side a sliding coating and the rear side a mechanically displaceable clamping element are arranged, wherein the clamping element for clamping a arranged on the sliding lining traction means cooperates with a formed on the internal combustion engine support surface.
Gebiet der ErfindungField of the invention
Im Steuertrieb von Brennkraftmaschinen kommen häufig Zugmittel, insbesondere Kette oder Riemen zum Einsatz, über welche zwei zu treibende Maschinenteile, beispielsweise zwei Nockenwellen bewegungsgekoppelt werden. Hierfür ist es erforderlich, dass das Zugmittel stets unter Spannung steht, um eine einwandfreie Kopplung zu gewährleisten. Dies wird mittels einer Spannvorrichtung realisiert, die einen Tragkörper aufweist, über welchen sie an einem Maschinenelement, insbesondere an einem Motorblock oder an einem Zylinderkopf befestigt wird.Traction means, in particular chain or belt, are often used in the control drive of internal combustion engines, via which two machine parts, for example two camshafts, to be driven are motion-coupled. For this purpose, it is necessary that the traction means is always under tension to ensure proper coupling. This is realized by means of a tensioning device, which has a support body, by means of which it is fastened to a machine element, in particular to an engine block or to a cylinder head.
Aus der
Die Aufgabe der vorliegenden Erfindung besteht darin, eine Spannvorrichtung dahingehend weiterzuentwickeln, dass das Spannelement hinsichtlich einer Reibung und Schwingungsdämpfung optimiert wird.The object of the present invention is to develop a clamping device to the effect that the clamping element is optimized in terms of friction and vibration damping.
Erfindungsgemäße LösungInventive solution
Erfindungsgemäß ist das Spannelement zylindrisch ausgebildet und weist eine erste sowie eine zweite Gleitfläche auf, wobei die erste Gleitfläche an der Stützfläche der Brennkraftmaschine zur Anlage kommt und die zweite Gleitfläche an dem Tragkörper angeordnet ist. Mit anderen Worten sind aufgrund der zylindrischen Ausbildung des Spannelements beide Gleitflächen in tangentialer Richtung gewölbt ausgebildet, so dass eine linienförmige Auflagefläche zwischen der ersten Gleitfläche und der Stützfläche der Brennkraftmaschine sowie zwischen der zweiten Gleitfläche und dem Tragkörper entsteht. Mithin wird dadurch insbesondere die Reibung an dem Spannelement minimiert.According to the invention the clamping element is cylindrical and has a first and a second sliding surface, wherein the first sliding surface comes to rest on the support surface of the internal combustion engine and the second sliding surface is arranged on the support body. In other words, due to the cylindrical design of the clamping element, both sliding surfaces are curved in the tangential direction, so that a line-shaped support surface is formed between the first sliding surface and the support surface of the internal combustion engine and between the second sliding surface and the support body. As a result, in particular the friction on the clamping element is minimized.
Gemäß einem bevorzugten Ausführungsbeispiel ist zumindest die zweite Gleitfläche konvex ausgebildet, um eine im Wesentlichen punktuelle Auflagefläche des Spannelements an dem Tragkörper zu realisieren. Somit ist zumindest die zweite Gleitfläche nicht nur tangential sondern auch axial gewölbt. Mithin weist das Spannelement einen zumindest teilweise kugelkalottenförmigen Abschnitt auf. Vorteilhafterweise sind beide Gleitflächen konvex ausgebildet, wobei das Spannelement rotationssymmetrisch ausgebildet ist.According to a preferred embodiment, at least the second sliding surface is convex to realize a substantially punctual bearing surface of the clamping element on the support body. Thus, at least the second sliding surface is not only tangentially but also axially curved. Consequently, the clamping element has an at least partially spherical cap-shaped portion. Advantageously, both sliding surfaces are convex, wherein the clamping element is rotationally symmetrical.
Gemäß einem weiteren bevorzugten Ausführungsbeispiel ist zumindest die zweite Gleitfläche als federndes Element ausgebildet, um eine Schwingungsdämpfung des Spannelements an dem Tragkörper zu realisieren. Vorzugsweise ist das federnde Element in Form eines Spannkeils ausgebildet, das sich in einem spitzen Winkel von einer Umfangsfläche des Spannelements erstreckt. Dabei ist besonders bevorzugt nur ein Abschnitt des federnden Elements mit dem Spannelement verbunden und der restliche Abschnitt im Wesentlichen parallel zur Auflagefläche an dem Tragkörper ausgebildet. Mithin erfolgt die Schwingungsdämpfung durch radiales Ein- und Ausfedern des federnden Elements, wobei radial zwischen dem restlichen Abschnitt des federnden Elements und dem Spannelement ein Spalt ausgebildet ist. Ebenso ist aber auch denkbar, das Spannelement rotationssymmetrisch auszubilden, wobei dann das federnde Element ringförmig ausgebildet ist.According to a further preferred embodiment, at least the second sliding surface is designed as a resilient element in order to realize a vibration damping of the clamping element on the support body. Preferably, the resilient element is in the form of a clamping wedge which extends at an acute angle from a peripheral surface of the clamping element. In this case, only a portion of the resilient element is particularly preferably connected to the clamping element and the remaining portion is formed substantially parallel to the support surface on the support body. Thus, the vibration damping takes place by radial compression and rebound of the resilient element, wherein a gap is formed radially between the remaining portion of the resilient member and the clamping element. Likewise, however, it is also conceivable to form the clamping element rotationally symmetrical, in which case the resilient element is annular.
Kurzbeschreibung der ZeichnungBrief description of the drawing
Weitere die Erfindung verbessernde Maßnahmen werden nachstehend gemeinsam mit der Beschreibung bevorzugter Ausführungsbeispiele der Erfindung anhand der Figuren näher dargestellt. Es zeigenFurther measures improving the invention will be described in more detail below together with the description of preferred embodiments of the invention with reference to FIGS. Show it
Ausführliche Beschreibung der ZeichnungDetailed description of the drawing
Gemäß
Nach
Gemäß
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Tragkörper supporting body
- 22
- Gleitbelag sliding lining
- 33
- Spannelement clamping element
- 44
- Stützfläche support surface
- 5a, 5b5a, 5b
- Gleitfläche sliding surface
- 66
- federndes Element resilient element
- 77
- Winkel angle
- 88th
- Umfangsfläche peripheral surface
- 99
- Greifhaken Grappling hook
- 1010
- mechanisches Element mechanical element
- 1111
- Bohrung drilling
- 1212
- Spalt gap
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 102008051143 A1 [0003] DE 102008051143 A1 [0003]
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014215414.6A DE102014215414A1 (en) | 2014-08-05 | 2014-08-05 | Clamping device with an optimized clamping element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014215414.6A DE102014215414A1 (en) | 2014-08-05 | 2014-08-05 | Clamping device with an optimized clamping element |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102014215414A1 true DE102014215414A1 (en) | 2016-02-11 |
Family
ID=55134695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102014215414.6A Withdrawn DE102014215414A1 (en) | 2014-08-05 | 2014-08-05 | Clamping device with an optimized clamping element |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102014215414A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008051143A1 (en) | 2008-10-09 | 2010-07-08 | Schaeffler Technologies Gmbh & Co. Kg | jig |
-
2014
- 2014-08-05 DE DE102014215414.6A patent/DE102014215414A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008051143A1 (en) | 2008-10-09 | 2010-07-08 | Schaeffler Technologies Gmbh & Co. Kg | jig |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |