WO2006021279A1 - Entrainement a element de traction notamment destine a un moteur a combustion interne - Google Patents

Entrainement a element de traction notamment destine a un moteur a combustion interne Download PDF

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Publication number
WO2006021279A1
WO2006021279A1 PCT/EP2005/008095 EP2005008095W WO2006021279A1 WO 2006021279 A1 WO2006021279 A1 WO 2006021279A1 EP 2005008095 W EP2005008095 W EP 2005008095W WO 2006021279 A1 WO2006021279 A1 WO 2006021279A1
Authority
WO
WIPO (PCT)
Prior art keywords
belt
wheel
traction mechanism
movable part
traction
Prior art date
Application number
PCT/EP2005/008095
Other languages
German (de)
English (en)
Inventor
Bernd Hartmann
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 WO2006021279A1 publication Critical patent/WO2006021279A1/fr

Links

Classifications

    • 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
    • F01L1/024—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
    • F16H7/1263—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 straight path
    • F16H7/1272—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 straight path with means for impeding reverse motion
    • 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
    • F16H2007/0806—Compression 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
    • F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
    • F16H2007/0853—Ratchets
    • 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
    • F16H2035/001—Gearings with eccentric mounted gears, e.g. for cyclically varying ratio
    • 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 traction mechanism drive, in particular for a combustion engine, with a belt, a tensioning device acting on the belt, at least one driving wheel and at least one driven wheel, of which at least one is out of round and / or eccentrically mounted.
  • Control drives of internal combustion engines usually have a crankshaft drive wheel, one, two or more camshaft drive wheels and a belt or belt preferably designed as a belt wrapper.
  • further traction components driven by wheels may be present, which comprise units such as a water pump, a generator, an air-conditioning compressor, etc.
  • Traction drives are subject to vibration excitations due to torque fluctuations or angular speed changes, which can lead to audible noise in resonance ranges. This results in increased frictional forces which can impair the service life of the belt drive and the efficiency.
  • the invention is therefore based on the problem of admitting a traction mechanism drive, which is less expensive to produce and ensures a long service life.
  • the tensioning device is designed as a detent with a part fastened to the motor and a part moveable on the other hand, which are locked together Part is moved with decreasing tension of the belt means under the influence of a spring element towards the belt and a movement in the reverse direction is locked.
  • the invention is based on the finding that, instead of a hydraulic clamping system, a simply constructed and cost-effective arresting device can be used, which is integrated into the traction mechanism drive.
  • the erfindungsge ⁇ Permitted traction drive comprises at least one non-circular trained and / or eccentrically mounted wheel, in addition, a detent is used to ensure an approximately constant tension of the belt during the entire life of the traction drive.
  • the Umschlin ⁇ supply means is preferably designed as a timing chain or timing belt. These wrappers tend to elongate as use progresses, creating a number of problems including the inability to provide secure guidance on the wheels or pulleys with an extended wrap. In addition, the life of the belt decreases if it is not operated with the intended voltage.
  • the movable part of the Rastspan ⁇ ners on which preferably a wheel is arranged as a tension roller on which Belting, so that a balance of forces between the force of the spring element which presses the movable member against the belt and the reaction force on the belt means prevails.
  • the force of the spring element is greater than the opposite force exerted by the belt on the movable part, so that the movable part is moved towards the belt.
  • the ratchet and the associated wheel are located outside or inside the belt, but in most cases it is preferred that the ratchet pushes the wheel from the outside into the belt drive.
  • the ratchet tensioner is designed so that it acts only in one direction, accordingly, the movable part can be moved away from the fixed part towards the belt, a movement of the Rastspan ⁇ ners in the reverse direction, that is in the direction of the fixed part but locked. This structure results in that the movable part of the latching tensioner is moved toward the belting means as the lengthening of the belting means progresses.
  • the wheel connected to the restraint tensioner is arranged on a rotatable or pivotally mounted mounting device and movable with this.
  • a structure has the advantage that the mounting and storage points can be selected according to the respective installation conditions.
  • the mounting device has a first bearing point, by means of which it is rotatably or pivotably mounted on the motor and has a second bearing point, via which it is connected to the detent.
  • the mounting device is not mounted directly on the engine or on the engine block, but on an associated vehicle component, for example an aggregate or on the vehicle body, but attachment to the engine block is preferred.
  • a mounting device which has two holes Having points, they can be arranged on each other approximately on both sides of the wheel opposite one another.
  • a particularly reliable function of the traction mechanism according to the invention can be achieved if the movable part of the locking device encompassing detents, in which engages a spring-loaded locking element of the attached to the engine part.
  • the movable part of the arresting device having the notches is displaced toward the belt, so that the spring-loaded locking element of the stationary part engages in adjacent or other detents.
  • the part attached to the motor has a locking device which blocks a movement in the opposite direction.
  • This locking device has a similar function as a pawl, as it allows a movement of the beweg ⁇ union part of the fixed part away and blocks movement in the opposite direction.
  • the belt means of the traction mechanism according to the invention may be a high elasticity Elastriemen, but alternatively, a conventional belt can be used, which is less expensive.
  • FIG. 1 shows a first embodiment of the invention with a ei ⁇ ne tension roller having locking clamps
  • Fig. 2 shows a second embodiment of the invention, wherein the
  • Fig. 1 shows a first embodiment with a tension roller aufwei ⁇ send Rastenpanner.
  • the traction mechanism drive 1 for an internal combustion engine shown in FIG. 1 consists essentially of a driving wheel 2 which is connected to the crankshaft of the engine and driven wheels 3, 4, 5 and one about the wheels 2, 3, 4, 5 guided belt 6.
  • the wheel 3 serves as a tension roller for a latching tensioner 7, the wheel 4 is connected to the shaft of a generator, the wheel 5 drives an air conditioning compressor.
  • other wheels may be present for other units, for example, camshaft drive wheels.
  • the crankshaft 2 is formed out of round, it has approximately the shape of an ellipse.
  • the non-circular wheel 2 imparts a non-uniformity to the traction mechanism drive 1, which superimposes and influences the system-related nonuniformity.
  • Every combustion engine has a critical speed range, in which vibrations and possibly even resonances can occur.
  • the critical resonance or speed range can be shifted into a non-interfering range; if necessary, the oscillations which occur can also be reduced by superposition.
  • the ratchet tensioner 7 consists of a fixed part which is mounted on the engine block and a movable part 9 on the other hand, on which the serving as a tension roller driven wheel 3 is rotatably mounted.
  • the latching tensioner 7 is adjusted so that a certain adjustable tension of the belt 6 is generated by the wheel 3.
  • a compression spring 10 is arranged, which is supported on the fixed part 8 and the movable member 9 permanently applied. While the operation of the traction mechanism drive 1 there is a balance of forces between the force generated by the compression spring 10 and the same size,
  • Chrysler ⁇ acting reaction force which is practiced by the belt 6 on the wheel 3 aus ⁇ .
  • the force exerted by the compression spring 10 is greater than the opposite force of the belt 6, so that the movable member 9 is moved toward the belt 6.
  • the latching tensioner further comprises a locking device 14, which acts as a pawl and prevents the beweg ⁇ bare part 9 is moved back toward the fixed part 8.
  • the movable member 9 can thus only be moved away from the fixed part 8 in the direction of the belt, but subsequently it can not return to its original position.
  • Fig. 2 shows a second embodiment in which the locking clamp is attached to a rotatably mounted mounting device.
  • the traction mechanism 15 shown in Fig. 2 comprises, in accordance with the first embodiment, a belt 6, which is driven by a crankshaft 2.
  • driven wheels 5, 16 of an air conditioning compressor and a water pump are present.
  • the driven wheel 17 of a generator is rotatably mounted on a mounting device 18.
  • the holding device 18 has a first bearing point 19 on the engine block, on which the holding device 18 is rotatably mounted.
  • the holding device 18 comprises a second bearing point 20, to which it is connected to a detent 21.
  • the construction and the function of the latching tensioner 21 correspond to those of the latching tensioner 7 of the first embodiment.
  • the ratchet 21 has a fixed, mounted on the engine block part and a contrast movable part, where the bearing point 20 is located.
  • the movable part of the detent tensioner 21 is moved away from the stationary part of the detent tensioner, wherein the movable bearing point 20 performs a rotational movement counterclockwise about the bearing point 19. Thereby, the driven wheel 17 is shifted so that the tension of the belt increases.
  • the belt 6 may be a so-called Elastriemen, which is characterized by a be ⁇ particularly high elasticity.
  • a conventional belt which is particularly inexpensive can also be used.

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

L'invention concerne un entraînement à élément de traction notamment destiné à un moteur à combustion interne, comportant une courroie (6), un dispositif de tension (7) agissant sur la courroie, au moins une roue d'entraînement (2) et au moins une roue entraînée (4, 5) dont au moins une est conçue de façon ovale et/ou logée de façon excentrique. Le dispositif de tension est conçu en tant que tendeur à encastrement (7, 21) comportant une partie (8) fixée sur le moteur et une partie mobile (9) encastrées l'une avec l'autre. En cas de baisse de tension de la courroie, la partie mobile (9) est déplacée en direction de la courroie sous l'effet d'un ressort (10) et un mouvement dans le sens opposé est bloqué.
PCT/EP2005/008095 2004-08-21 2005-07-26 Entrainement a element de traction notamment destine a un moteur a combustion interne WO2006021279A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004040579.4 2004-08-21
DE200410040579 DE102004040579A1 (de) 2004-08-21 2004-08-21 Zugmitteltrieb, insbesondere für einen Verbrennungsmotor

Publications (1)

Publication Number Publication Date
WO2006021279A1 true WO2006021279A1 (fr) 2006-03-02

Family

ID=35094473

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/008095 WO2006021279A1 (fr) 2004-08-21 2005-07-26 Entrainement a element de traction notamment destine a un moteur a combustion interne

Country Status (2)

Country Link
DE (1) DE102004040579A1 (fr)
WO (1) WO2006021279A1 (fr)

Cited By (3)

* 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
CN108713116A (zh) * 2016-03-17 2018-10-26 马自达汽车株式会社 发动机的附件驱动装置
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
DE102009013637A1 (de) 2009-03-18 2010-09-23 Schaeffler Technologies Gmbh & Co. Kg Spannvorrichtung für einen Zugmitteltrieb
DE102009033390A1 (de) 2009-07-16 2011-01-20 Schaeffler Technologies Gmbh & Co. Kg Zugmitteltrieb
FR2986268A1 (fr) * 2012-01-30 2013-08-02 Peugeot Citroen Automobiles Sa Moteur de vehicule automobile a courroie d'alterno-demarreur protegee

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1783987A (en) * 1929-02-19 1930-12-09 Morse Chain Co Chain-adjusting device
GB696586A (en) * 1950-09-26 1953-09-02 George Mattey Baigent Improvements in or relating to spring-tensioned jockey pulleys or sprockets
US2954726A (en) * 1954-10-20 1960-10-04 Stothert & Pitt Ltd Chain transmission drive for vibratory rollers
US3583250A (en) * 1969-04-01 1971-06-08 Rca Corp Transmission including toothed belt and partially toothed pulley
US3812733A (en) * 1972-05-17 1974-05-28 Yamakyu Chan Kk Tensioning device for flexible members
DE19520508A1 (de) 1995-06-03 1996-12-05 Audi Ag Umschlingungstrieb
DE19812939A1 (de) * 1997-03-26 1999-01-14 Mitsubishi Motors Corp Nockenwellenantriebsvorrichtung
FR2824599A1 (fr) * 2001-05-11 2002-11-15 Peugeot Citroen Automobiles Sa Dispositif de demarrage d'un moteur a combustion interne de propulsion d'un vehicule automobile
US20030104886A1 (en) * 2001-11-27 2003-06-05 Witold Gajewski Synchronous drive apparatus and methods

Family Cites Families (5)

* Cited by examiner, † Cited by third party
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DD29063A1 (de) * 1962-05-12 1964-06-15 Manfred Matthaus Vorrichtung zum Spannen von Ketten, Riemen und dgl
DE2118208A1 (en) * 1971-04-15 1972-11-02 Vereinigte Seidenwebereien AG, 4150Krefeld Drive tensioner - in chain return path by two idler wheels to give an s course
FR2539838B3 (fr) * 1983-01-25 1985-12-06 Caoutchouc Manuf Plastiques Tendeur de courroie ou de chaine de transmission
JP3226030B2 (ja) * 1998-08-20 2001-11-05 株式会社椿本チエイン ラチェット式テンショナ
DE10057818A1 (de) * 2000-11-21 2002-05-23 Ina Schaeffler Kg Zugmitteltrieb für einen Startergenerator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1783987A (en) * 1929-02-19 1930-12-09 Morse Chain Co Chain-adjusting device
GB696586A (en) * 1950-09-26 1953-09-02 George Mattey Baigent Improvements in or relating to spring-tensioned jockey pulleys or sprockets
US2954726A (en) * 1954-10-20 1960-10-04 Stothert & Pitt Ltd Chain transmission drive for vibratory rollers
US3583250A (en) * 1969-04-01 1971-06-08 Rca Corp Transmission including toothed belt and partially toothed pulley
US3812733A (en) * 1972-05-17 1974-05-28 Yamakyu Chan Kk Tensioning device for flexible members
DE19520508A1 (de) 1995-06-03 1996-12-05 Audi Ag Umschlingungstrieb
DE19812939A1 (de) * 1997-03-26 1999-01-14 Mitsubishi Motors Corp Nockenwellenantriebsvorrichtung
FR2824599A1 (fr) * 2001-05-11 2002-11-15 Peugeot Citroen Automobiles Sa Dispositif de demarrage d'un moteur a combustion interne de propulsion d'un vehicule automobile
US20030104886A1 (en) * 2001-11-27 2003-06-05 Witold Gajewski Synchronous drive apparatus and methods

Cited By (4)

* 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
CN108713116A (zh) * 2016-03-17 2018-10-26 马自达汽车株式会社 发动机的附件驱动装置
CN108713116B (zh) * 2016-03-17 2022-03-01 马自达汽车株式会社 发动机的附件驱动装置
US11174921B2 (en) 2016-09-13 2021-11-16 Litens Automotive Partnership V tensioner and endless drive arrangement

Also Published As

Publication number Publication date
DE102004040579A1 (de) 2006-02-23

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