WO2004015305A1 - Dispositif de tensionnement d'un entrainement a courroie - Google Patents

Dispositif de tensionnement d'un entrainement a courroie Download PDF

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Publication number
WO2004015305A1
WO2004015305A1 PCT/EP2003/008273 EP0308273W WO2004015305A1 WO 2004015305 A1 WO2004015305 A1 WO 2004015305A1 EP 0308273 W EP0308273 W EP 0308273W WO 2004015305 A1 WO2004015305 A1 WO 2004015305A1
Authority
WO
WIPO (PCT)
Prior art keywords
rolling
belt drive
drive according
inner part
outer part
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
Application number
PCT/EP2003/008273
Other languages
German (de)
English (en)
Inventor
Gunnar Pralle
Bernd Hartmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHO Holding GmbH and Co KG
Original Assignee
INA Schaeffler KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by INA Schaeffler KG filed Critical INA Schaeffler KG
Priority to AU2003253337A priority Critical patent/AU2003253337A1/en
Publication of WO2004015305A1 publication Critical patent/WO2004015305A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/22—Sliding surface consisting mainly of rubber or synthetic rubber
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/063—Sliding contact bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/066—Ball or roller bearings
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/02—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together
    • 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
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/63—Gears with belts and pulleys

Definitions

  • the invention relates to a tensioning device for a belt drive, with a device housing for receiving spring and damping means, with a tensioning arm rotatably mounted thereon and with a pressure means arranged at the free end of the tensioning arm.
  • the drive belt is generally deflected from its uninfluenced wrap path by means of a tensioning device acting on the belt between the drive pulleys, thus generating the necessary pretensioning force which presses the belt onto the drive pulleys.
  • a tensioning device acting on the belt between the drive pulleys, thus generating the necessary pretensioning force which presses the belt onto the drive pulleys.
  • Such clamping devices consist essentially of a non-rotatably arranged housing on which a clamping arm for a Riemena press roller is pivotally mounted.
  • a spring damping device is located in the housing, the spring being supported on the one hand on the housing and acting on the tension arm with its other end. The damping mechanism ensures that the belt vibrations occurring in such a drive system are limited to a tolerable level.
  • such a damping device usually consists of brake bodies, which are either attached to the housing. se or are attached to the tension arm and act with a certain contact force on an effective surface with respect to the rotational movement of the tension arm.
  • Such belt tensioning devices are known, for example, from DE 34 19 969 A1 and DE 37 28 158 A1, in which annular rubber-elastic elements fulfill the braking or vibration damping function.
  • the disadvantage of these damping devices is that they are subject to abrasive wear and in some cases, lubricants must also be used in order to achieve a desired damping effect.
  • CH 31 62 36 and CH 32 49 87 show rolling bearings which essentially consist of an outer part, an inner part and rubber-elastic rolling elements arranged in between.
  • the distance between the bearing parts which are movable relative to one another is smaller than the diameter of the roller bodies before they are inserted into the roller bearing, so that a radially acting prestress acts on the roller bodies used.
  • the rolling elements Before being introduced into the space between the inner bearing part and the outer bearing part, the rolling elements have an approximately round cross section. Depending on the preload given to the rolling elements, due to molecular rearrangement within them, which, however, proceed without any further external change in shape, rotation of the two parts mentioned with respect to one another has a greater or lesser resistance. According to these publications, such bearings can also be used to a certain extent as a movement damper.
  • the object of the invention is to further develop a belt tensioning device according to DE 34 19 969 A1 in such a way that more cost-effective production and better operating behavior can be achieved.
  • the tensioning device for a belt drive is designed with a device housing for receiving spring and damping means, with a tensioning arm rotatably mounted thereon and with a pressure means arranged on the free end of the tensioning arm in such a way that the damping means consists of a there is a hollow cylindrical outer part and a cylindrical inner part, between which rolling or sliding bodies are arranged, with the inside of the outer part, the surface of the inner part and / or the rolling or sliding bodies being formed in such a way that on or on them of the surface opposite these components when a force is applied to them and when they move relative to one another, a macroscopic surface deformation of the components that increases and dampens the rolling or sliding resistance of the rolling or sliding bodies is produced.
  • the outer part can be designed as an outer housing part and the inner part as an inner housing part.
  • one or both of the opposite sides of the outer part and the inner part of the damping device are visually elastic or automatically designed to be reversibly flexible and the rolling or sliding bodies are made of a metallic material.
  • the rolling or sliding bodies are made of a metallic material.
  • the inner part and the outer part have rigid surfaces and the rolling bodies consist of an elastomer or another elastic material.
  • the rolling bodies consist of an elastomer or another elastic material.
  • elastically non-deformable rolling elements are also arranged between the inside of the outer part and the surface of the inner part, which serve as spacers for the elastically deformable rolling elements.
  • the diameter of the elastically deformable rolling elements is larger than the diameter of the elastically non-deformable rolling elements.
  • the inside of the outer part, the surface of the inner part and / or the surface of the rolling or sliding bodies consists of a flexible or elastic material layer which includes a viscous material, the rolling bodies in turn consisting of a material which is not independently reversibly deformable.
  • Another variant of the design principle according to the invention provides that the inside of the outer part or the surface of the inner part has a rigid surface with sliding bodies formed thereon, while the opposite surface has a comparatively soft surface made of a material with automatically reversible elastic deformation behavior.
  • the damping device is a component of the pivot bearing for the tensioning arm and is preferably designed as a tapered roller, inclined ball or deep groove ball bearing, wherein the rolling or sliding bodies can have a spherical, cylindrical, conical or needle-shaped geometry.
  • FIG. 1 shows a schematic illustration of a belt tensioning device
  • FIG. 2 shows a schematic cross-sectional illustration of the damping device of the belt tensioning device
  • FIG. 3 shows another variant of the damping device
  • Figure A is a damping device without rolling elements.
  • FIG. 1 shows a schematic side view of a belt tensioning device 1 with which a drive belt 2 is deflected into a pretensioned position.
  • the belt tensioning device 1 essentially consists of a housing 5 which is fastened in a rotationally fixed manner to a component 16 of a drive device by means of a connecting piece 6.
  • an inner part 8 of the housing 5 is fixed non-rotatably, which is coaxially surrounded by a housing outer part 7.
  • Rolling elements 9 are inserted between these two housing parts 7, 8, so that the outer housing part 7 and the inner housing part 8 can be rotated relative to one another.
  • a S arm 4 is connected, which carries a pressure roller 3 for the drive belt 2 at its free end.
  • the tensioning arm 4 is pressed together with the pressure roller 3 by a spring (not shown separately) with a force F against the drive belt 2, so that the latter is accordingly pre-tensioned.
  • the belt tensioning device 1 also has a damping mechanism, which ensures that the tensioning arm 4 lies quietly on the drive belt 2 and is not excited to torsional vibrations due to belt vibrations.
  • the embodiment of the damping device according to the invention shown there deviating from the previously customary damping systems, consists of macroscopically non-deformable rolling elements 9 which are arranged between the macroscopically automatically reversibly deformable surfaces 18, 19 of the outer part 7 and the inner part 8 of the housing 5 ,
  • These deformable surfaces 18, 19 can be formed from an elastomer layer or another suitable polymer material layer, which are formed on the inside of the housing outer part 7 and / or on the outside of the inner part 8.
  • the rolling elements 9 arranged between the housing inner part 8 and the housing outer part 7 cause an elastic deformation of the surfaces 18, 19 of the housing outer part 7 and the housing inner part 8 when these parts 7, 8 are acted upon by a force F1, F2 9 as a result of the relative movement of these two parts 7, 8 from one another.
  • the deformation energy used is expressed in the rolling elements 9 in an increased rolling resistance compared to non-deformable rolling surfaces, which is used as a damping effect for the belt tensioning system.
  • the force F1, F2 acting on the rolling elements 9 is preferably generated by an axial spring acting axially on the outer housing part 7 or the inner housing part 8, which is not shown separately here.
  • At least one of the mutually facing surfaces of the housing outer part 7 and / or the housing inner part 8 consist of a flexible plastic film.
  • This flexible plastic film encloses itself between the metallic part of the housing and / or housing adjoining part 7, 8 a viscoelastic liquid which ensures the desired elastic deformation of the plastic film which has a damping effect on the rotary movement of the tensioning arm 4 when the rolling elements 9 roll past .
  • the rolling elements 9 themselves can be designed as steel balls and can be components of the rolling bearing with which the pivoting of the tensioning arm 4 is achieved.
  • This ball bearing can be designed as a tapered roller bearing, an inclined ball bearing or also as a deep groove ball bearing, wherein the rolling elements 9 can have a spherical, a cylindrical, a conical or a needle-shaped geometry.
  • the inside of the outer housing part 10 and the outside of the inner housing part 11 have a hard and macroscopically non-deformable surface.
  • Rolling elements 1 are arranged between these housing parts, which are not elastically deformable and determine the distance between the inside of the housing outer part 10 and the surface of the housing inner part 11 under the action of a force F1, F2.
  • rolling elements 12 are arranged in this intermediate space, which are reversibly elastically deformable, so that deformation work must be performed when they roll off.
  • the distance between the inside of the outer housing part 10 and the surface of the inner housing part 11 is selected such that it is smaller than the diameter of an elastically not deformed and initially approximately circular rolling element 12.
  • These rolling elements 12 can be made from an elastomer or another self-reversibly deforming polymer material.
  • the rolling elements 12 consist of a spherical plastic film which includes a viscoelastic liquid 16.
  • the elastically non-deformable rolling elements 17 fulfill, in addition to their usual bearing tasks in a rolling bearing, also the function of spacers for the elastic rolling elements 12 which are larger in diameter, so that this damping-acting bearing for the tensioning arm 4 of a belt tensioning device 1 also possibly without an axial force can be produced on the spring generating elastic rolling elements 12.
  • This embodiment of the invention acts solely by the form-fitting assembly of the two housing parts 7, 8 with the interposition of the elastically non-deformable rolling elements 17 on the elastically deformable rolling elements 12, a normal force F1, F2, which in the static state causes the rolling elements 12 to flatten and with a relative movement of the outer housing part 10 and the inner housing part 11 to each other caused a circumferential deformation of the elastic rolling elements 12. In this way, a rolling resistance is generated, as a result of which a damping effect on the deflection movement of the tensioning arm 4 of the belt tensioning device 1 is brought about.
  • FIG. 4 shows another embodiment of the design principle according to the invention, in which the damping device manages without V-shaped bodies between the inside of the outer housing part 13 and the surface of the inner housing part 14.
  • rigid sliding bodies 15 are formed on the inside of the outer housing part 13, the ends of which slide radially inward and are pressed into the elastically reversibly deformable material 20 of the inner housing part 14.
  • the sliding bodies 15 cause the elastic material 20 of the housing interior 14 to deform, which automatically reversibly reforms, when the respective sliding body 15 moves away from this location.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Support Of The Bearing (AREA)

Abstract

L'invention concerne un dispositif de tensionnement d'un entraînement à courroie, comportant un boîtier (5) destiné à recevoir des éléments ressorts et amortisseurs, un bras de tensionnement (4) logé rotativement sur le boîtier, et un élément de compression (3) logé sur l'extrémité libre du bras de tensionnement (4). L'invention vise à améliorer un tel dispositif de tensionnement. A cet effet, l'élément amortisseur est composé d'une partie extérieure cylindrique creuse (7, 10, 13) et d'une partie intérieure cylindrique (8, 11, 14), entre lesquelles sont logés des corps de laminage et de glissement (9, 12, 15). Par ailleurs, le côté intérieur de la partie extérieure (7, 10, 13), le côté extérieur de la partie intérieure (8, 11, 14) et/ou les corps de laminage et de glissement (9, 12, 15) sont conçus de manière à créer une déformation de surface élastique, réversible, macroscopique des composants, augmentant la résistance au roulement ou au glissement des corps de laminage ou de glissement (9, 12, 15), sur lesdits composants ou sur une surface opposée auxdits composants, lors de l'application d'une force (F1, F2) et du mouvement relatif des composants les uns par rapport aux autres. Cette augmentation de la résistance au roulement ou au glissement provoque un amortissement de mouvements oscillants du bras de tensionnement (4).
PCT/EP2003/008273 2002-08-02 2003-07-26 Dispositif de tensionnement d'un entrainement a courroie Ceased WO2004015305A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003253337A AU2003253337A1 (en) 2002-08-02 2003-07-26 Tensioning device for a belt drive

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10235285.2 2002-08-02
DE10235285A DE10235285A1 (de) 2002-08-02 2002-08-02 Spannvorrichtung für einen Riementrieb

Publications (1)

Publication Number Publication Date
WO2004015305A1 true WO2004015305A1 (fr) 2004-02-19

Family

ID=30128635

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/008273 Ceased WO2004015305A1 (fr) 2002-08-02 2003-07-26 Dispositif de tensionnement d'un entrainement a courroie

Country Status (3)

Country Link
AU (1) AU2003253337A1 (fr)
DE (1) DE10235285A1 (fr)
WO (1) WO2004015305A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1954963B1 (fr) * 2005-11-18 2010-08-25 DAYCO EUROPE S.r.l. Unite de poulie

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1798125A (en) * 1927-02-12 1931-03-24 American Chain & Cable Co Roller bearing
GB595578A (en) * 1945-07-06 1947-12-09 Vernon Anthony Trier Improvements in or relating to bearings
CH316236A (de) 1952-11-26 1956-09-30 J Neidhart Hermann Wälzlager und Verfahren zur Herstellung desselben
CH324987A (de) 1952-11-26 1957-10-15 J Neidhart Hermann Wälzlager
US2842410A (en) * 1952-11-26 1958-07-08 Hermann J Neidhart Roller bearing
GB965868A (en) * 1962-01-31 1964-08-06 Gomma Antivibranti Applic Energy dissipating device
US3177559A (en) * 1963-01-09 1965-04-13 Gomma Antivibranti Applic Method of making a resilient joint
FR2529979A1 (fr) * 1982-07-10 1984-01-13 Daimler Benz Ag Palier elastique de pivotement
DE3419969A1 (de) 1984-05-29 1985-07-18 Daimler-Benz Ag, 7000 Stuttgart Spannvorrichtung fuer ein endloses biegsames uebertragungsglied
DE3728158A1 (de) 1987-05-18 1989-03-09 Werner Kotzab Spannvorrichtung fuer riemen u. dgl., insbesondere an kraftfahrzeugmotoren
US5257680A (en) * 1991-12-20 1993-11-02 Lord Corporation Surface effect dampers having both hysteresis and a frictional component
US5599245A (en) * 1994-08-12 1997-02-04 Ina Walzlager Schaeffler Kg Belt Tensioner with lamellar sliding bearing ring
DE19540706A1 (de) * 1995-11-02 1997-05-07 Schaeffler Waelzlager Kg Spanneinrichtung für Zugmittel mit Konus-Gleitlager

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1343403A (fr) * 1963-01-14 1963-11-15 Gomma Antivibranti Applic Dispositif dissipateur d'énergie
DE3704520C2 (de) * 1987-02-13 1996-04-18 Skf Gmbh Vorrichtung zum Dämpfen von Drehbewegungen
DE3704573C2 (de) * 1987-02-13 1996-04-04 Skf Gmbh Vorrichtung zum Dämpfen von Drehbewegungen
JPH03277809A (ja) * 1990-03-24 1991-12-09 Ntn Corp 揺動軸受
DE4330389A1 (de) * 1993-09-08 1995-03-09 Schaeffler Waelzlager Kg Dämpfungsstoff

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1798125A (en) * 1927-02-12 1931-03-24 American Chain & Cable Co Roller bearing
GB595578A (en) * 1945-07-06 1947-12-09 Vernon Anthony Trier Improvements in or relating to bearings
CH316236A (de) 1952-11-26 1956-09-30 J Neidhart Hermann Wälzlager und Verfahren zur Herstellung desselben
CH324987A (de) 1952-11-26 1957-10-15 J Neidhart Hermann Wälzlager
US2842410A (en) * 1952-11-26 1958-07-08 Hermann J Neidhart Roller bearing
GB965868A (en) * 1962-01-31 1964-08-06 Gomma Antivibranti Applic Energy dissipating device
US3177559A (en) * 1963-01-09 1965-04-13 Gomma Antivibranti Applic Method of making a resilient joint
FR2529979A1 (fr) * 1982-07-10 1984-01-13 Daimler Benz Ag Palier elastique de pivotement
DE3419969A1 (de) 1984-05-29 1985-07-18 Daimler-Benz Ag, 7000 Stuttgart Spannvorrichtung fuer ein endloses biegsames uebertragungsglied
DE3728158A1 (de) 1987-05-18 1989-03-09 Werner Kotzab Spannvorrichtung fuer riemen u. dgl., insbesondere an kraftfahrzeugmotoren
US5257680A (en) * 1991-12-20 1993-11-02 Lord Corporation Surface effect dampers having both hysteresis and a frictional component
US5599245A (en) * 1994-08-12 1997-02-04 Ina Walzlager Schaeffler Kg Belt Tensioner with lamellar sliding bearing ring
DE19540706A1 (de) * 1995-11-02 1997-05-07 Schaeffler Waelzlager Kg Spanneinrichtung für Zugmittel mit Konus-Gleitlager

Also Published As

Publication number Publication date
AU2003253337A1 (en) 2004-02-25
DE10235285A1 (de) 2004-02-12

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