DE102005033056A1 - Mechanical damping system for chain and belt tensioner especially for IC engines has interlocking friction profiles for support arm mounting - Google Patents
Mechanical damping system for chain and belt tensioner especially for IC engines has interlocking friction profiles for support arm mounting Download PDFInfo
- Publication number
- DE102005033056A1 DE102005033056A1 DE200510033056 DE102005033056A DE102005033056A1 DE 102005033056 A1 DE102005033056 A1 DE 102005033056A1 DE 200510033056 DE200510033056 DE 200510033056 DE 102005033056 A DE102005033056 A DE 102005033056A DE 102005033056 A1 DE102005033056 A1 DE 102005033056A1
- Authority
- DE
- Germany
- Prior art keywords
- wedge
- bearing shell
- bearing
- clamping device
- pivot axis
- 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- Withdrawn
Links
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
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
- F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
- F16H7/1209—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means
- F16H7/1218—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means of the dry friction type
-
- 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
- F01L1/02—Valve drive
-
- 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
- F01L1/02—Valve drive
- F01L1/022—Chain drive
-
- 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
- F01L1/02—Valve drive
- F01L1/024—Belt drive
-
- 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
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
- F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
- F16H7/1254—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means
- F16H7/1281—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially circular path
-
- 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
- F16H2007/0802—Actuators for final output members
- F16H2007/0808—Extension coil springs
-
- 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
- F16H2007/0802—Actuators for final output members
- F16H2007/081—Torsion springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
Description
Gebiet der ErfindungTerritory of invention
Die Erfindung betrifft eine mechanisch gedämpfte Spannvorrichtung für Zugmittel wie Riemen oder Ketten, insbesondere von Verbrennungsmotoren.The The invention relates to a mechanically damped tensioning device for traction means such as belts or chains, in particular internal combustion engines.
Hintergrund der Erfindungbackground the invention
Bei den meisten Spannsystemen ist die Lagerung des Spannarms getrennt vom Dämpfungsmechanismus angeordnet. Das bedingt eine erhöhte Teilezahl und damit meist auch höhere Kosten.at Most of the clamping systems separate the mounting of the clamping arm from the damping mechanism arranged. This requires an increased number of parts and thus usually higher Costs.
Eine Ausnahme bildet der Konusspanner, bei dem Lager und Dämpfer in einer konischen Reibfläche vereint sind. Der Konusspanner ist jedoch auf eine hohe Axialkraft der Spannfeder angewiesen, um die Verkippung des Spannsystems gering zu halten.A The exception is the cone clamp, where bearings and dampers in a conical friction surface are united. However, the cone clamp is on a high axial force the tension spring instructed to the tilting of the clamping system low to keep.
In
der
Die
Kunststofflagerschale der Spannvorrichtung gemäß
Aufgabe der ErfindungTask of invention
Der Erfindung liegt die Aufgabe zugrunde, dass Dämpfermoment der gattungsbildenden mechanischen Spannvorrichtung generell zu erhöhen.Of the Invention is the object of the damper torque of the generic type generally increase mechanical tensioning device.
Zusammenfassung der ErfindungSummary the invention
Die Aufgabe wird gelöst durch die Merkmale des unabhängigen Patentanspruchs 1.The Task is solved by the characteristics of the independent Patent claim 1.
Das Reib- bzw. Dämpfermoment des Spannarms wird erfindungsgemäß durch Erhöhen der auf die Reib- bzw. Kontaktflächen des Gleitlagers wirkende Normalkraft mittels Keilwirkung gesteigert.The Friction or damper torque of the clamping arm according to the invention Increase on the friction or contact surfaces the plain bearing acting normal force increased by wedging action.
Die dadurch erforderlichen Maßnahmen machen anstelle einer axialen Montage des Gleitlagers eine Radiale erforderlich. Dazu wird die Kunststofflagerschale als Halblagerschale ausgebildet, deren Schalenwinkel maximal 180° beträgt. Auf der Innenseite dieser Halblagerschale sind parallele und gleiche sowie keilförmige Keilringnuten im Abstand der doppelten Keilringnutenbreite eingearbeitet, zwischen denen jeweils ein Keilring mit komplementärem Keilquerschnitt angeordnet ist.The necessary action make a radial instead of an axial mounting of the sliding bearing required. For this purpose, the plastic bearing shell as half bearing shell formed, the shell angle is a maximum of 180 °. On the inside of this Half bearing shell are parallel and equal as well as wedge-shaped Keilringnuten incorporated at a distance of double Keilringnutenbreite, between each of which a wedge ring arranged with complementary wedge cross-section is.
In die Außenseite der Schwenkachse sind die gleichen und gleich beabstandeten Keilringnuten mit dazwischen angeordneten Keilringen eingearbeitet. Durch einen keilringbreiten, axialen Versatz gegenüber der Halbschale passen die entsprechenden Keilringnuten und Keilringe der Halblagerschale und der Schwenkachse flankenspielfrei und reibpaarungsrichtig zusammen. Dabei steigert die Keilwirkung der ineinander verkeilten Keilringe und Keilringnuten die auf die Reib- und Gegenflächen wirkenden Normalkräfte und damit das Reibungs- bzw. Dämpfungsmoment des Spannarms.In the outside the pivot axis are the same and equally spaced Keilringnuten with incorporated between arranged wedge rings. Through a wedge ring width, axial offset opposite the half-shell fit the corresponding Keilringnuten and wedge rings the half bearing shell and the pivot axis flank play and Reibpaarungsrichtig together. The wedge effect of the wedged-together increases Keilringe and Keilringnuten acting on the friction and counter surfaces normal forces and so that the friction or damping torque of the tensioning arm.
Um eine größtmögliche Keilwirkung zu erzielen ohne Gefahr einer Selbsthemmung zu laufen, weisen sämtliche Keilflächen einen Keilwinkel β von vorzugsweise 30° auf.Around a maximum wedge effect to achieve without risk of self-locking to run, all wedge surfaces a wedge angle β of preferably 30 ° up.
Aus Bauraumgründen ist es von Vorteil, wenn die Halbschale mindestens zwei Keilringe aufweist, die in zwei Keilringnuten der Schwenkachse eingreifen.Out space reasons It is advantageous if the half-shell at least two wedge rings has, which engage in two wedge ring grooves of the pivot axis.
Eine vorteilhafte Ausbildung der Erfindung besteht darin, dass die Halblagerschale eine formschlüssige, vorzugsweise mit einer Nut und einer Feder ausgebildete Verbindung mit dem Lagergehäuse aufweist.A advantageous embodiment of the invention is that the half bearing shell a form-fitting, preferably formed with a groove and a spring connection having the bearing housing.
Von Vorteil ist auch, dass die Halblagerschale aus selbstschmierendem oder zu befettendem Kunststoff und die Schwenkachse vorzugsweise aus Druckguss-Aluminium hergestellt sind. Selbstschmierende Kunststoffe wie PA 46 PTFE 15 sind besonders wartungsfreundlich. Druckguss-Aluminium eignet sich als Gegenreibfläche und zeichnet sich durch geringes Gewicht, niedrige Fertigungskosten sowie eine hohe Korrosionsbeständigkeit aus.From Another advantage is that the half bearing shell made of self-lubricating or to be greased plastic and the pivot axis preferably made of die-cast aluminum. Self-lubricating plastics like PA 46 PTFE 15 are particularly easy to maintain. Die-cast aluminum is suitable itself as Gegenreibfläche and is characterized by low weight, low manufacturing costs as well a high corrosion resistance out.
Als Federelemente kommen Schenkel-, Schraubendruck- und Schraubenzugfedern infrage, wobei die Schenkelfeder den geringsten Bauraum benötigt.When Spring elements come leg, screw pressure and Schraubenzugfedern in question, with the leg spring requires the least space.
Als Montagehilfe und Transportsicherung von Halblagerschale und Schwenkachse ist ein im axialen Mittenbereich der Halblagerschale und vorzugsweise einstückig mit dieser auf deren Endflächen befestigtes Klipp-Paar vorgesehen, dessen Außendurchmesser dem der Halblagerschale und dessen Innendurchmesser dem Durchmesser des Keilnutengrunds entsprechen. Dabei gestattet der Abstand der Klippspitzen ein lösbares einklippsen der Schwenkachse in die Halblagerschale.When Assembly aid and transport protection of half bearing shell and swivel axis is one in the axial center region of the half bearing shell and preferably one piece with this on the end surfaces attached clip pair provided whose outer diameter of the half bearing shell and its inner diameter is the diameter of the keyway bottom correspond. The distance between the clip tips allows a releasable clipping the pivot axis in the half bearing shell.
Da die Keilringe in den Keilringnuten ein radiales Spiel aufweisen, können diese soweit verschleißen, bis die Keilringe den Grund der Keilringnuten berühren. Vorteilhaft sind zum Toleranzausgleich der Keile untereinander elastische Elemente in der Lagerschale integriertThere the wedge rings have a radial play in the wedge ring grooves, can wear them out so far, until the wedge rings touch the bottom of the wedge ring grooves. Advantageous are for tolerance compensation of the wedges with each other elastic elements integrated in the bearing shell
Kurze Beschreibung der ZeichnungenShort description the drawings
Weitere Merkmale der Erfindung ergeben sich aus der folgenden Beschreibung und den Zeichnungen, in denen Ausführungsbeispiele der Erfindung schematisch dargestellt sind.Further Features of the invention will become apparent from the following description and the drawings, in which embodiments of the invention are shown schematically.
Dabei zeigen:there demonstrate:
Ausführliche Beschreibung der ZeichnungenFull Description of the drawings
Die
Die
Spannvorrichtung
Das
Keilringlager
Die
erfindungsgemäße Ausbildung
des Keilringslagers
Das
Lagergehäuse
Die
Halblagerschale
Die
Schwenkachse
Um
die Dämpfung
der Spannvorrichtung
Dazu
dient die erfindungsgemäße Ausgestaltung
der Innenseite
Die
Keilringe
Die
Endflächen
In
Die
Schwenkachse
In
Die
In
- 11
- Spannvorrichtungjig
- 1a1a
- modifizierte Spannvormodified Spannvor
- richtungdirection
- 22
- Spannarmclamping arm
- 2a2a
- modifizierter Spannarmmodified clamping arm
- 2b2 B
- alternativer Spannarmalternative clamping arm
- 33
- KeilringlagerWedge ring bearings
- 44
- Schwenkachseswivel axis
- 55
- HalblagerschaleHalf bearing shell
- 66
- Längsbohrunglongitudinal bore
- 77
- Lagergehäusebearing housing
- 7a7a
- modifiziertes Lagergemodified Lagerge
- häusehousing
- 88th
- Innenseite der Halblagerinside the half camp
- schaleBowl
- 99
- Außenseite des Schwenkoutside of the pan
- lagerscamp
- 1010
- Keilringnuttapered ring groove
- 1111
- Keilringwedge ring
- 1212
- Federkammerspring chamber
- 1313
- SchenkelfederLeg spring
- 1414
- Flanschflange
- 1515
- Spannrolleidler
- 1616
- Endflächeend face
- 1717
- Klippclip
- 17a17a
- Klippspitzecliff top
- 1818
- Federfeather
- 1919
- Unterlegscheibewasher
- 2020
- Spannschraubeclamping screw
- 2121
- Kugellagerball-bearing
- 2222
- Nutgroove
- 2323
- Nutengrundspiel derNutengrundspiel of the
- HalblagerschaleHalf bearing shell
- 2424
- Nutengrundspiel derNutengrundspiel of the
- Schwenkachseswivel axis
- 2525
- Hebellever
- 2626
- SchraubendruckfederHelical compression spring
- 2727
- Doppelhakendouble hook
- 2828
- Öseeyelet
- 2929
- Hakenhook
- 3030
- oberste Federwindungtop spring coil
- 3131
- unterste Federwindunglowest spring coil
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510033056 DE102005033056A1 (en) | 2005-07-15 | 2005-07-15 | Mechanical damping system for chain and belt tensioner especially for IC engines has interlocking friction profiles for support arm mounting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510033056 DE102005033056A1 (en) | 2005-07-15 | 2005-07-15 | Mechanical damping system for chain and belt tensioner especially for IC engines has interlocking friction profiles for support arm mounting |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005033056A1 true DE102005033056A1 (en) | 2007-01-25 |
Family
ID=37575499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200510033056 Withdrawn DE102005033056A1 (en) | 2005-07-15 | 2005-07-15 | Mechanical damping system for chain and belt tensioner especially for IC engines has interlocking friction profiles for support arm mounting |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005033056A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090269127A1 (en) * | 2008-04-26 | 2009-10-29 | Schaeffler Kg | Lever mounting arrangement comprising an injected sliding bearing |
EP2955414A1 (en) * | 2014-06-13 | 2015-12-16 | Aktiebolaget SKF | Tensioning device and method for assembling such a tensioning device |
RU203848U1 (en) * | 2020-12-11 | 2021-04-22 | Общество с ограниченной ответственностью «Румит» | FAN BELT TENSIONING MECHANISM |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0524431A1 (en) * | 1991-06-21 | 1993-01-27 | Dayco PTI S.p.A. | Tensioning device for transmission belts |
DE4225226A1 (en) * | 1991-07-31 | 1993-02-11 | Ntn Toyo Bearing Co Ltd | BELT TENSIONER |
DE4428560A1 (en) * | 1994-08-12 | 1996-02-15 | Schaeffler Waelzlager Kg | Tensioning device with lamellar form plane bearing ring |
-
2005
- 2005-07-15 DE DE200510033056 patent/DE102005033056A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0524431A1 (en) * | 1991-06-21 | 1993-01-27 | Dayco PTI S.p.A. | Tensioning device for transmission belts |
DE4225226A1 (en) * | 1991-07-31 | 1993-02-11 | Ntn Toyo Bearing Co Ltd | BELT TENSIONER |
DE4428560A1 (en) * | 1994-08-12 | 1996-02-15 | Schaeffler Waelzlager Kg | Tensioning device with lamellar form plane bearing ring |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090269127A1 (en) * | 2008-04-26 | 2009-10-29 | Schaeffler Kg | Lever mounting arrangement comprising an injected sliding bearing |
EP2955414A1 (en) * | 2014-06-13 | 2015-12-16 | Aktiebolaget SKF | Tensioning device and method for assembling such a tensioning device |
US9777807B2 (en) | 2014-06-13 | 2017-10-03 | Aktiebolaget Skf | Tensioning device and method for assembling such a tensioning device |
RU203848U1 (en) * | 2020-12-11 | 2021-04-22 | Общество с ограниченной ответственностью «Румит» | FAN BELT TENSIONING MECHANISM |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 H, DE |
|
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: 20120822 |
|
R005 | Application deemed withdrawn due to failure to request examination |
Effective date: 20120717 |