WO2005121603A1 - Mecanisme d'entrainement a courroie comprenant des roues dentees de forme non arrondie - Google Patents

Mecanisme d'entrainement a courroie comprenant des roues dentees de forme non arrondie Download PDF

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Publication number
WO2005121603A1
WO2005121603A1 PCT/EP2005/005429 EP2005005429W WO2005121603A1 WO 2005121603 A1 WO2005121603 A1 WO 2005121603A1 EP 2005005429 W EP2005005429 W EP 2005005429W WO 2005121603 A1 WO2005121603 A1 WO 2005121603A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive
belt
wrap
teeth
gear
Prior art date
Application number
PCT/EP2005/005429
Other languages
German (de)
English (en)
Inventor
Rainer Pflug
Rainer BAUMÜLLER
Original Assignee
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 Schaeffler Kg filed Critical Schaeffler Kg
Publication of WO2005121603A1 publication Critical patent/WO2005121603A1/fr

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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/30—Chain-wheels
    • 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
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H2035/003—Gearings comprising pulleys or toothed members of non-circular shape, e.g. elliptical gears

Definitions

  • the invention relates to a belt drive, in particular control drive for an internal combustion engine or one of its auxiliary units, with at least one driving gear and at least one driving gear and a belt means connecting them (toothed belt or chain drive), at least one of the gears being non-circular, so that it is the rotation imposes an irregularity on the drive with the aim of calming the drive.
  • Control drives of internal combustion engines with a crankshaft drive wheel, at least one camshaft output gear and a chain or a toothed belt, or also other unit drives present on internal combustion engines are subject to vibration changes due to torque fluctuations or changes in angular velocity, which can lead to audible noise in resonance areas. This is associated with increased frictional forces, which can impair the lifespan of the belt drive and its efficiency.
  • the aim of the present invention to create a belt drive of the type mentioned, in which the calming of the drives combines with a particularly favorable run of the belt on the gears.
  • the non-round gear wheel is a round disk with teeth of different heights, the tooth height increasing over a fixed circumferential angle and decreasing over the same circumferential angle.
  • the design can be made so that the tooth contour has a tangent connecting two opposing arcs, with only the length of this tangent varying to change the tooth height.
  • Fig. 1 is a view of a gear according to the invention for a belt drive for a four-cylinder engine
  • the gear wheel 1 in FIG. 1 which represents a driving or driving gear, has a circular pitch circle 2, above which teeth of different tooth heights rise. Starting from the position at the top with the long teeth 3, the tooth height decreases continuously up to the shortest teeth 3 ′ offset by 90 °, then increases again and again over 90 °.
  • a non-uniformity x ⁇ y can be impressed on the belt drive, i.e. the chain or the toothed belt, in a corresponding manner, as in the case of a gear wheel of non-circular design, in which the pitch circle 2 is already non-circular, while the tooth height of all teeth is the same.
  • At least this superimposed non-uniformity means that a possible resonance frequency is shifted into areas that are not reached in normal operation, so that disturbing resonances cannot occur during operation.
  • Figures 2 and 3 show a special embodiment of the unequal teeth 3 and 3 '.
  • the tooth flank 4 in each case comprises two opposing circular arc sections 5 and 6, which are of the same design for the short teeth 3 'and the long teeth 3 and a tangent section 7, 7' connecting them, which varies with the tooth height.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)

Abstract

L'invention concerne un mécanisme d'entraînement à courroie, en particulier un mécanisme de commande pour un moteur à combustion interne ou d'un de ses groupes auxiliaires, comprenant au moins une roue menante et au moins une roue menée et un élément à courroie les reliant (une courroie dentée ou une propulsion par chaîne). AU moins une de ses roues n'est pas de forme arrondie, de sorte que lors de la rotation de l'actionnement une irrégularité apparaît, ce qui permet de réguler le mécanisme, la roue de forme non arrondie étant un disque comprenant des dents de hauteurs différentes.
PCT/EP2005/005429 2004-06-09 2005-05-19 Mecanisme d'entrainement a courroie comprenant des roues dentees de forme non arrondie WO2005121603A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004028222.6 2004-06-09
DE200410028222 DE102004028222A1 (de) 2004-06-09 2004-06-09 Umschlingungstrieb mit unrunden Zahnrädern

Publications (1)

Publication Number Publication Date
WO2005121603A1 true WO2005121603A1 (fr) 2005-12-22

Family

ID=34967655

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/005429 WO2005121603A1 (fr) 2004-06-09 2005-05-19 Mecanisme d'entrainement a courroie comprenant des roues dentees de forme non arrondie

Country Status (2)

Country Link
DE (1) DE102004028222A1 (fr)
WO (1) WO2005121603A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9341243B2 (en) 2012-03-29 2016-05-17 Litens Automotive Partnership Tensioner and endless drive arrangement
US11174921B2 (en) 2016-09-13 2021-11-16 Litens Automotive Partnership V tensioner and endless drive arrangement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005008676A1 (de) * 2005-02-25 2006-06-22 Audi Ag Zahnrad für einen Zahnkettentrieb
JP4386377B2 (ja) 2007-06-12 2009-12-16 株式会社椿本チエイン サイレントチェーン伝動装置
DE102009033390A1 (de) 2009-07-16 2011-01-20 Schaeffler Technologies Gmbh & Co. Kg Zugmitteltrieb

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US586991A (en) * 1897-07-27 Drive-gear
US2259937A (en) * 1940-02-05 1941-10-21 Chain Belt Co Roller chain sprocket wheel
GB551756A (en) * 1941-09-03 1943-03-09 Hermann Klaucke Improvements in roller chain sprocket wheels
US3377875A (en) * 1966-05-09 1968-04-16 Gen Motors Corp Chain drive power transmitting mechanism
US3583250A (en) * 1969-04-01 1971-06-08 Rca Corp Transmission including toothed belt and partially toothed pulley
JPS63106453A (ja) * 1986-10-21 1988-05-11 Nippon Soken Inc タイミングベルト機構
US5145188A (en) * 1990-05-19 1992-09-08 Wilhelm Herm. Muller GmbH & Co. KG Toothed-belt drive
DE19520508A1 (de) 1995-06-03 1996-12-05 Audi Ag Umschlingungstrieb
EP0803662A1 (fr) * 1996-04-23 1997-10-29 Continental Aktiengesellschaft Roue dentée avec une poulie à rebord pour une transmission à courroie dentée
US6364798B1 (en) * 1997-09-30 2002-04-02 Ford Global Technologies, Inc. Sprocket for roller chain drives

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2219530A1 (de) * 1972-04-21 1973-10-31 Norbert Schmidt Unsymmetrisches tretkurbel-kettenrad fuer fahrraeder
US3899932A (en) * 1973-12-19 1975-08-19 Roger Owen Durham Chain retention device for elliptical sprockets
JPS59217046A (ja) * 1983-05-20 1984-12-07 Honda Motor Co Ltd ベルト伝動装置
US4940450A (en) * 1987-06-17 1990-07-10 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Power transmission system using toothed belt of engine for vehicle
JPH02217652A (ja) * 1988-03-03 1990-08-30 Tomio Koyama 伝動ベルトの横振動共振音防止方法並びに該方法の実施に使用する伝動ベルト及びその装置
SE466865B (sv) * 1988-10-10 1992-04-13 Volvo Ab Kuggremstransmission, i synnerhet foer foerbraenningsmotorer
US7125356B2 (en) * 2001-11-06 2006-10-24 Borgwarner Inc. Tension-reducing random sprocket
US20040259674A1 (en) * 2003-06-23 2004-12-23 Pfister Dennis M. Sprocket having variable height teeth

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US586991A (en) * 1897-07-27 Drive-gear
US2259937A (en) * 1940-02-05 1941-10-21 Chain Belt Co Roller chain sprocket wheel
GB551756A (en) * 1941-09-03 1943-03-09 Hermann Klaucke Improvements in roller chain sprocket wheels
US3377875A (en) * 1966-05-09 1968-04-16 Gen Motors Corp Chain drive power transmitting mechanism
US3583250A (en) * 1969-04-01 1971-06-08 Rca Corp Transmission including toothed belt and partially toothed pulley
JPS63106453A (ja) * 1986-10-21 1988-05-11 Nippon Soken Inc タイミングベルト機構
US5145188A (en) * 1990-05-19 1992-09-08 Wilhelm Herm. Muller GmbH & Co. KG Toothed-belt drive
DE19520508A1 (de) 1995-06-03 1996-12-05 Audi Ag Umschlingungstrieb
EP0803662A1 (fr) * 1996-04-23 1997-10-29 Continental Aktiengesellschaft Roue dentée avec une poulie à rebord pour une transmission à courroie dentée
US6364798B1 (en) * 1997-09-30 2002-04-02 Ford Global Technologies, Inc. Sprocket for roller chain drives

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 347 (M - 743) 19 September 1988 (1988-09-19) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9341243B2 (en) 2012-03-29 2016-05-17 Litens Automotive Partnership Tensioner and endless drive arrangement
US11174921B2 (en) 2016-09-13 2021-11-16 Litens Automotive Partnership V tensioner and endless drive arrangement

Also Published As

Publication number Publication date
DE102004028222A1 (de) 2005-12-29

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