FR2892483A3 - Belt tensioning device for engine of vehicle, has pin joints respectively connecting support to fixed part of engine mounting and spring, where spring is directly connected to mounting using another pin joint - Google Patents

Belt tensioning device for engine of vehicle, has pin joints respectively connecting support to fixed part of engine mounting and spring, where spring is directly connected to mounting using another pin joint Download PDF

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Publication number
FR2892483A3
FR2892483A3 FR0553244A FR0553244A FR2892483A3 FR 2892483 A3 FR2892483 A3 FR 2892483A3 FR 0553244 A FR0553244 A FR 0553244A FR 0553244 A FR0553244 A FR 0553244A FR 2892483 A3 FR2892483 A3 FR 2892483A3
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FR
France
Prior art keywords
roller
support
engine
spring
belt
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Withdrawn
Application number
FR0553244A
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French (fr)
Inventor
Pascal Hottebart
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.)
Renault SAS
Original Assignee
Renault SAS
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Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Priority to FR0553244A priority Critical patent/FR2892483A3/en
Publication of FR2892483A3 publication Critical patent/FR2892483A3/en
Withdrawn legal-status Critical Current

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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
    • F16H7/1254—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
    • 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
    • F16H7/1236—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 fluid and restriction type, e.g. dashpot
    • 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
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0812—Fluid pressure

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

Abstract

The device has a hydraulic spring (22) directly connected to an engine mounting (12) using a pin joint (30). The spring maintains a belt tensioning idler pulley (18) in contact with a belt (16), where the pulley is mounted on a mobile support (20) using a pin joint (24). Pin joints (26, 28) respectively connect the support to a fixed part of the mounting and to the spring such that the joint (24) is placed between two ends of the support. An independent claim is also included for a method of assembling a belt tensioning device.

Description

Dispositif de mise en tension d'une courroieDevice for tensioning a belt

L'invention concerne les dispositifs de mise en tension de courroie, et en particulier les dispositifs de mise en tension de courroie comportant un galet tendeur, un support de galet et un élément de rappel élastique. La mise en rotation d'accessoires du moteur par une courroie nécessite que cette dernière ne glisse pas sur les poulies d'entraînement pour que le transfert de mouvement soit optimal. On évite les glissements en maintenant une tension suffisante dans la courroie, qui restera ainsi en contact avec toutes les poulies sur le circuit de la courroie. Certains dispositifs connus de tension automatique d'une courroie utilisent un ensemble monté sur une partie fixe du véhicule, comprenant un élément de rappel élastique, un support de galet et un galet dit tendeur, qui applique une tension sur une partie de la courroie d'entraînement.  The invention relates to belt tensioning devices, and in particular belt tensioning devices comprising a tensioning roller, a roller support and an elastic return element. Rotating the motor accessories with a belt requires that the belt does not slip on the drive pulleys for optimum motion transfer. Sliding is prevented by maintaining sufficient tension in the belt, which will thus remain in contact with all the pulleys on the belt circuit. Some known automatic belt tensioning devices use an assembly mounted on a fixed part of the vehicle, comprising an elastic return member, a roller support and a tensioning roller, which applies tension to a portion of the belt of the belt. training.

Cependant, l'encombrement de ces dispositifs de mise en tension et celui du moteur rendent l'accès aux outils pour le montage et les réglages, difficile. Le but de cette invention, est de fournir un dispositif de mise en tension d'une courroie dont l'encombrement est réduit. Dans ce but, la présente invention fournit un dispositif de mise en tension pouvant comporter au moins une liaison pivot d'axe fixe directement fixé sur l'élément du support moteur du véhicule. L'élément de rappel élastique peut travailler en poussée forçant le contact d'un galet tendeur avec la courroie. Ledit élément de rappel élastique peut être un ressort hydraulique.  However, the size of these tensioning devices and that of the motor make access to tools for mounting and adjustments difficult. The purpose of this invention is to provide a device for tensioning a belt whose size is reduced. For this purpose, the present invention provides a tensioning device which may comprise at least one fixed axis pivot connection directly fixed to the element of the engine support of the vehicle. The resilient biasing member can work in thrust forcing the contact of a tensioner roller with the belt. Said elastic return element may be a hydraulic spring.

La liaison entre le galet tendeur et le support de galet, peut se situer entre les deux autres extrémités du support définies par les liaisons avec une partie fixe et avec l'élément de rappel élastique. Un des avantages de cette invention réside dans le fait que le dispositif de mise en tension de la courroie est directement fixé sur le support moteur intégrant des fixations adaptées, permettant ainsi un accès aisé des outils de serrage. En effet, en associant le dispositif au moteur, l'architecture est simplifiée et la compacité de l'ensemble laisse plus d'espace pour atteindre tous les éléments et faciliter le montage.  The connection between the tensioning roller and the roller support can be between the two other ends of the support defined by the connections with a fixed part and with the elastic return element. One of the advantages of this invention lies in the fact that the tensioning device of the belt is directly attached to the engine support incorporating suitable fasteners, thus allowing easy access to the clamping tools. Indeed, by associating the device with the engine, the architecture is simplified and the compactness of the assembly leaves more space to reach all the elements and facilitate the assembly.

La présente invention fournit aussi un procédé d'assemblage du dispositif, comportant les étapes suivantes : - On fixe le galet tendeur au support dudit galet ; - On fixe l'ensemble galet et support de galet à l'élément de rappel élastique ; - On fixe le dispositif de mise en tension comprenant le galet tendeur, le support de galet et le ressort hydraulique au support moteur ; et - On insère la courroie dans le circuit comprenant les poulies d'accessoires du moteur, la poulie vilebrequin et le galet tendeur.  The present invention also provides a method of assembling the device, comprising the following steps: the tensioner roller is fixed to the support of said roller; - We set the roller assembly and roller support to the elastic return member; The tensioning device comprising the tensioner roller, the roller support and the hydraulic spring is fixed to the engine support; and the belt is inserted into the circuit comprising the engine accessory pulleys, the crankshaft pulley and the tensioner roller.

L'ordre de réalisation des étapes de ce procédé d'assemblage n'a pas d'importance. L'invention sera désormais décrite par des exemples en référence au dessin annexé : - la figure 1 est une vue de face du moteur et du dispositif de mise en tension. En référence à la figure 1, un moteur 10 comprend un support moteur 12 et une poulie de vilebrequin 14. La poulie de vilebrequin 14 fixée sur l'arbre du moteur 12 entraîne une courroie 16 mettant en rotation des poulies d'accessoires du moteur (non représentées). La courroie 16 passe sur un galet tendeur 18 monté sur un support 20 mobile autour d'un axe défini par une liaison pivot 24. Le support 20 du galet tendeur 18 est à la fois lié à une partie fixe du support moteur 12 par une liaison pivot 26 et à un ressort hydraulique 22 par une liaison pivot 28, de telle sorte que la liaison 24 du support 20 avec le galet 18, se situe entre les deux extrémités du support 20 définies par les liaisons 26 et 28. Le ressort hydraulique 22 est d'autre part lié directement au support moteur 12, par une liaison pivot 30. Le dispositif de mise en tension comprend le support de galet 20, le galet tendeur 18 et le ressort hydraulique 22. Le fonctionnement de cette invention est le suivant : Le moteur 10 entraîne en rotation la poulie de vilebrequin 14. Le mouvement de rotation de la poulie 14, est transmis aux accessoires du moteur, par l'intermédiaire de la courroie 16. Pour que la transmission s'effectue sans perte de puissance, il est nécessaire que la courroie 16 reste tendue en permanence pour éviter les glissements de ladite courroie sur les poulies d'entraînement des accessoires.  The order of realization of the steps of this assembly process does not matter. The invention will now be described by examples with reference to the accompanying drawing: - Figure 1 is a front view of the motor and the tensioning device. With reference to FIG. 1, a motor 10 comprises a motor support 12 and a crankshaft pulley 14. The crankshaft pulley 14 fixed to the shaft of the motor 12 drives a belt 16 rotating the engine accessory pulleys ( not represented). The belt 16 passes over a tensioning roller 18 mounted on a support 20 that can move about an axis defined by a pivot connection 24. The support 20 of the tensioner roller 18 is both linked to a fixed part of the engine support 12 by a link pivot 26 and a hydraulic spring 22 by a pivot connection 28, so that the connection 24 of the support 20 with the roller 18, is between the two ends of the support 20 defined by the links 26 and 28. The hydraulic spring 22 is further connected directly to the engine support 12 by a pivot connection 30. The tensioning device comprises the roller support 20, the tensioner roller 18 and the hydraulic spring 22. The operation of this invention is as follows: The motor 10 rotates the crankshaft pulley 14. The rotational movement of the pulley 14 is transmitted to the engine accessories via the belt 16. In order for the transmission to proceed without loss of power, it is necessary that the belt 16 remains stretched permanently to prevent slippage of said belt on the drive pulleys accessories.

Le dispositif constitué du galet tendeur 18, du support de galet 20 et du ressort hydraulique 22, est donc destiné à maintenir cette tension dans la courroie 16. Le galet 18 monté sur le support 20 est maintenu en contact avec la courroie 16 à l'aide du ressort hydraulique 22. La poussé du ressort 22 tend ainsi la courroie 16 par l'intermédiaire du galet 18. L'avantage de ce montage, est que le dispositif de mise en tension de la courroie (18, 20, 22) et le support moteur 12 sont solidarisés directement l'un à l'autre, permettant ainsi de gagner en compacité.  The device consisting of the tensioner roller 18, the roller support 20 and the hydraulic spring 22, is therefore intended to maintain this tension in the belt 16. The roller 18 mounted on the support 20 is kept in contact with the belt 16 to the With the aid of the hydraulic spring 22, the thrust of the spring 22 thus extends the belt 16 via the roller 18. The advantage of this assembly is that the tensioning device of the belt (18, 20, 22) and the engine support 12 are directly attached to one another, thus saving compactness.

Claims (5)

REVENDICATIONS 1. Dispositif de mise en tension d'une courroie (16) entraînée par un moteur de véhicule (10), comprenant un élément de rappel élastique (22) dont une extrémité est monté en rotation autour d'un axe fixe par une liaison pivot (30), un galet tendeur (18) libre en rotation sur un support (20) lui-même monté en rotation autour d'un axe fixe par une première liaison pivot (26) et lié d'autre part à l'élément de rappel hydraulique par une seconde liaison pivot (28) , caractérisé en ce qu'au moins une des liaisons pivot d'axe fixe (26, 30) dudit dispositif est directement fixée sur le support moteur (12) du véhicule.  1. Device for tensioning a belt (16) driven by a vehicle engine (10), comprising an elastic return element (22) whose end is rotatably mounted about a fixed axis by a pivot connection (30), a tensioner roller (18) free to rotate on a support (20) itself rotatably mounted about a fixed axis by a first pivot connection (26) and further connected to the element of hydraulic return by a second pivot connection (28), characterized in that at least one of the fixed axis pivot links (26, 30) of said device is directly attached to the engine support (12) of the vehicle. 2. Dispositif selon la revendication 1, caractérisé en ce que l'élément de rappel élastique (22) travaille en poussée forçant le contact d'un galet tendeur (18) avec la courroie (16).  2. Device according to claim 1, characterized in that the elastic return member (22) operates in thrust forcing the contact of a tensioner roller (18) with the belt (16). 3. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'élément de rappel élastique (22) est un ressort hydraulique.  3. Device according to one of the preceding claims, characterized in that the elastic return element (22) is a hydraulic spring. 4. Dispositif selon l'une des revendications précédentes, caractérisé en ce 20 que la liaison (24) entre le galet tendeur (18) et le support de galet (20), se situe entre les deux extrémités du support (20) définies par les liaisons avec une partie fixe (26) et avec l'élément de rappel élastique (28).  4. Device according to one of the preceding claims, characterized in that the connection (24) between the tensioner roller (18) and the roller support (20), is between the two ends of the support (20) defined by the connections with a fixed part (26) and with the elastic return element (28). 5. Procédé d'assemblage du dispositif, comportant les étapes suivantes : 25 - On fixe le galet tendeur (18) au support dudit galet (20) ; - On fixe l'ensemble galet (18) et support de galet (20) à l'élément de rappel élastique (22); - On fixe le dispositif de mise en tension comprenant le galet tendeur (18), le support de galet (20) et le ressort hydraulique (22) au support 30 moteur (12); et - On insère la courroie (16) dans le circuit comprenant les poulies d'accessoires du moteur, la poulie vilebrequin (14) et le galet tendeur (18). 415  5. A method of assembling the device, comprising the following steps: - the tensioner roller (18) is fixed to the support of said roller (20); The roller assembly (18) and the roller support (20) are fixed to the elastic return element (22); The tensioning device comprising the tensioning roller (18), the roller support (20) and the hydraulic spring (22) is fixed to the motor support (12); and - the belt (16) is inserted into the circuit comprising the engine accessory pulleys, the crankshaft pulley (14) and the tensioner roller (18). 415
FR0553244A 2005-10-25 2005-10-25 Belt tensioning device for engine of vehicle, has pin joints respectively connecting support to fixed part of engine mounting and spring, where spring is directly connected to mounting using another pin joint Withdrawn FR2892483A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0553244A FR2892483A3 (en) 2005-10-25 2005-10-25 Belt tensioning device for engine of vehicle, has pin joints respectively connecting support to fixed part of engine mounting and spring, where spring is directly connected to mounting using another pin joint

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FR0553244A FR2892483A3 (en) 2005-10-25 2005-10-25 Belt tensioning device for engine of vehicle, has pin joints respectively connecting support to fixed part of engine mounting and spring, where spring is directly connected to mounting using another pin joint

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63212722A (en) * 1987-03-02 1988-09-05 Honda Motor Co Ltd Method of assembling timing belt and pulley of internal combustion engine
JPH0192533A (en) * 1987-10-02 1989-04-11 Honda Motor Co Ltd Timing belt tension regulating device for internal combustion engine
EP0741239A2 (en) * 1995-05-05 1996-11-06 Ford Motor Company Limited Accessory drive system for an automotive engine
JPH10306859A (en) * 1997-05-01 1998-11-17 Ntn Corp Hydraulic type auto-tensioner
JPH10306860A (en) * 1997-05-01 1998-11-17 Ntn Corp Hydraulic type auto-tensioner
EP0972920A2 (en) * 1998-07-16 2000-01-19 Volkswagen Aktiengesellschaft Tensioning roll for an endless drive in an internal combustion engine
WO2004099650A1 (en) * 2003-05-06 2004-11-18 Litens Automotive Linear tensioner

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63212722A (en) * 1987-03-02 1988-09-05 Honda Motor Co Ltd Method of assembling timing belt and pulley of internal combustion engine
JPH0192533A (en) * 1987-10-02 1989-04-11 Honda Motor Co Ltd Timing belt tension regulating device for internal combustion engine
EP0741239A2 (en) * 1995-05-05 1996-11-06 Ford Motor Company Limited Accessory drive system for an automotive engine
JPH10306859A (en) * 1997-05-01 1998-11-17 Ntn Corp Hydraulic type auto-tensioner
JPH10306860A (en) * 1997-05-01 1998-11-17 Ntn Corp Hydraulic type auto-tensioner
EP0972920A2 (en) * 1998-07-16 2000-01-19 Volkswagen Aktiengesellschaft Tensioning roll for an endless drive in an internal combustion engine
WO2004099650A1 (en) * 2003-05-06 2004-11-18 Litens Automotive Linear tensioner

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 495 (M - 780) 23 December 1988 (1988-12-23) *
PATENT ABSTRACTS OF JAPAN vol. 013, no. 300 (M - 848) 11 July 1989 (1989-07-11) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 02 26 February 1999 (1999-02-26) *

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