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 PDFInfo
- 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
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
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)
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)
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)
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)
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 |
-
2004
- 2004-06-09 DE DE200410028222 patent/DE102004028222A1/de not_active Withdrawn
-
2005
- 2005-05-19 WO PCT/EP2005/005429 patent/WO2005121603A1/fr active Application Filing
Patent Citations (10)
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)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 012, no. 347 (M - 743) 19 September 1988 (1988-09-19) * |
Cited By (2)
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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