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WO1987004764A1 - Continuous gear shifting device - Google Patents

Continuous gear shifting device Download PDF

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Publication number
WO1987004764A1
WO1987004764A1 PCT/FR1987/000034 FR8700034W WO8704764A1 WO 1987004764 A1 WO1987004764 A1 WO 1987004764A1 FR 8700034 W FR8700034 W FR 8700034W WO 8704764 A1 WO8704764 A1 WO 8704764A1
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WO
WIPO (PCT)
Prior art keywords
rotation
axis
satellite
output
toothing
Prior art date
Application number
PCT/FR1987/000034
Other languages
French (fr)
Inventor
Marc Heriard Dubreuil
Original Assignee
Marc Heriard Dubreuil
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 Marc Heriard Dubreuil filed Critical Marc Heriard Dubreuil
Publication of WO1987004764A1 publication Critical patent/WO1987004764A1/en

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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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
    • F16H3/721—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with an energy dissipating device, e.g. regulating brake or fluid throttle, in order to vary speed continuously
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/74—Complexes, not using actuable speedchanging or regulating members, e.g. with gear ratio determined by free play of frictional or other forces

Definitions

  • the present invention relates to a device for continuously changing speed.
  • the basic principle of this device consists essentially in distributing the motive power available on an input shaft of the device, between, at least, two kinematic chains of transmission coupled to each other and having different characteristics as regards concerns the distribution between the speed of rotation and the force of rotation.
  • each of them comprises at least one transmission member, mounted to rotate around a axis, which is itself mounted on an arm rotating around another axis, so that the rotation of the arm around this other axis constitutes the power output of the device. It is thus possible to obtain, continuously, different and variable ratios of the speed of rotation of the input shaft, to the speed of rotation of an output shaft integral in rotation with the output arm, to less in one direction of rotation, by varying either the powers or the respective speeds of rotation of the two kinematic chains.
  • an advantageous embodiment is such that one of the two coupled kinematic chains has an outer ring while the other chain has an inner ring, both crowns being driven in rotation about the input axis by an input satellite gear, mounted idly in rotation on an arm secured to the input shaft, the said satellite gear being engaged simultaneously with a toothing of the outer ring and toothing of the inner ring, the coupling of the two chains being ensured between the outer and inner rings by means of at least one output satellite pinion mounted idly on the output arm around an axis parallel to the axis of rotation of the outlet member and the toothing of which is engaged, direct or indirect, with a toothing of each of the two said crowns.
  • FIG. 1 is a schematic view, in transverse section, of a first embodiment
  • FIG. 2 is a is a partial view along II-II of FIG. 1
  • Figure 3 is a schematic representation similar to Figure 2, of the upper part of a variant or second embodiment of the device for continuous speed change.
  • the device comprises a drive shaft 1, shown vertically in Figure 1, which is integral in rotation with a drive arm or radial inlet 2. Near its outer radial end, this arm input 2 has a bearing surface on which a conical pinion 3 is mounted for rotation.
  • This pinion 3 is an input satellite whose teeth are engaged, in its lower part, with the teeth of a conical pinion 4 mounted around the driving shaft 1 and integral in rotation, around the entry axis of this shaft 1, with an outer ring 5.
  • the outer ring 5 consists of a radial disc, which carries the toothed pinion 4, and an axial collar secured to the periphery of the radial disc.
  • the external toothing of the input satellite 3 is simultaneously engaged with the toothing of a bevel gear 6 also mounted in rotation about the input axis of the motor shaft 1 and. integral with this rotation of the underside of an inner ring 7 which has a peripheral external toothing 8.
  • Two kinematic chains are thus obtained, having in common the drive shaft 1, the input arm 2 and the satellite d input 3, one of which, from the latter, comprises the toothed pinion 6 and the inner ring 7, while the other comprises, still from the input satellite 3, the toothed pinion 4 and the outer ring 5.
  • the outer ring 5 has, in the upper part of its collar, axial, toothing 9 on the internal face of this collar.
  • the two kinematic chains are coupled by a toothed pinion or output satellite 10, simultaneously engaged with the external toothing of the inner crown and with the internal toothing of the outer crown 5, and which is mounted for rotation around a small tree 11, with an axis parallel to the motor shaft 1, and carried substantially at the end of a radial output arm 12 integral in rotation with the lower part of an output shaft 13 which is tubular, mounted around the extension input shaft 1 and coaxial with it.
  • the device shown in FIG. 3 is identical to that of FIGS. 1 and 2 with regard to its lower part, namely the mounting of the input shaft 1, of the input radial arm 2 and of the input satellite 3 engaged with both a toothing of the outer crown 5 and a toothing of the inner crown 7.
  • the device of Figure 3 comprises an even number of transmission members ensuring this coupling. More precisely, there is an outlet arm 12, integral in rotation with the lower end of a tubular outlet shaft 13, coaxial with the inlet shaft 1, and this outlet arm 12 carries, in the vicinity of its external radial end, the small shaft 11 around which the output satellite 10 is mounted for rotation.
  • the external ring 5 has, at the upper part of its axial collar, an internal toothing 9.
  • this internal toothing 9 of the outer ring 5 is engaged with an external toothing 14 of the output satellite 10 which has a second external toothing 15 engaged with a toothed belt 16 which is also engaged with the external toothing 8 of the crown! internal 7.
  • the two teeth 14 and 15 of the pinion 10 can be two superimposed parts of the same external teeth, two teeth and aged with the same radius, or alternatively the teeth 15 can be a teeth of smaller diameter than the teeth 14 and located radially inside the latter, with a slight axial offset, to avoid any interference between the toothed belt 16 and the internal toothing 9 of the external crown 5.
  • the speed of rotation of the output shaft 13 may be maintained above a minimum threshold and / or below a maximum threshold.
  • This can be achieved using a non-return mechanism, such as a free wheel or an inverted free wheel, which is mounted on at least one of the rotating parts of at least one of the two kinematic chains. coupled or on the input satellite 3 common to the two channels, so as to obtain a different limit value on one of the rings depending on the center of rotation for which the prohibition or limitation will be ensured
  • An additional course of action may consist in introducing from the outside an acceleration or a deceleration on one of the two coupled transmission chains or possibly on both at the same time. This can be achieved, for example, using a braking device producing its effects on one of the two crowns.
  • a particularly interesting embodiment consists in exerting on the input satellite 3 a thrust developed by a motor member distinct from the shaft 1 and tending to drive it in rotation in one or the other direction, in order to create an imbalance permanent aiming to give priority or primacy to one or the other of the two kinematic chains coupled, that is to say to favor either the speed of rotation, or the torque.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Structure Of Transmissions (AREA)

Abstract

The continuous gear shifting device comprises an input shaft (1), an output shaft (13), two kinematic transmission systems each comprising at least one transmission member (5, 7) rotatingly mounted about an axis, the systems being coupled to each other and each being coupled by one end (2, 3) to the input shaft (1). The coupling is provided by means of at least one rotary transmission member (10) rotating about an axis (11) mounted on an output arm (12) which is rotatingly integral, at least in one direction, with the output shaft (13). Application to continuous gear shifting boxes and preferably to automatic gear-boxes.

Description

Dispositif à changement continu de vitesse . Continuous speed change device.
La présente invention se rapporte à un dispositif à changement continu de vitesse.The present invention relates to a device for continuously changing speed.
Le principe de base de ce dispositif consiste essentiellement à répartir la puissance motrice disponible sur un arbre d'entrée du dispositif, entre, au moins, deux chaînes cinématiques de transmission couplées l'une à l'autre et présentant des caractéristiques différentes en ce qui concerne la répartition entre la vitesse de rotation et la force de rotation.The basic principle of this device consists essentially in distributing the motive power available on an input shaft of the device, between, at least, two kinematic chains of transmission coupled to each other and having different characteristics as regards concerns the distribution between the speed of rotation and the force of rotation.
Selon une mesure technique propre à l'invention, dans le cas de deux chaînes cinématiques, l'une d'entre elles au moins, mais de préférence chacune d'elles, comporte au moins un organe de transmission, monté rotatif autour d'un axe, qui est lui-même monté sur un bras tournant autour d'u autre axe, de sorte que la rotation du bras autour de cet autre axe constitue la sortie de puissance du dispositif. II est ainsi possible d'obtenir, de manière continue, des rapports différents et variables de la vitesse de rotation de l'arbre d'entrée, à la vitesse de rotation d'un arbre de sortie solidaire en rotation du bras de sortie, au moins dans un sens de rotation, en faisant varier soit les puissances, soit les vitesses de rotation respectives des deux chaînes cinématiques.According to a technical measure specific to the invention, in the case of two kinematic chains, at least one of them, but preferably each of them, comprises at least one transmission member, mounted to rotate around a axis, which is itself mounted on an arm rotating around another axis, so that the rotation of the arm around this other axis constitutes the power output of the device. It is thus possible to obtain, continuously, different and variable ratios of the speed of rotation of the input shaft, to the speed of rotation of an output shaft integral in rotation with the output arm, to less in one direction of rotation, by varying either the powers or the respective speeds of rotation of the two kinematic chains.
Parmi les dispositifs à changement continu de vitesse qui peuvent être obtenus par l'invention, une forme avantageuse de réalisation est telle que l'une des deux chaînes cinématiques couplées comporte une couronne extérieure tandis que l'autre chaîne comporte une couronne intérieure, les deux couronnes étant entraînées en rotation autour de l'axe d'entrée par un pignon satellite d'entrée, monté fou en rotation sur un bras solidaire de l'arbre d'entrée, le dit pignon satellite étant en prise simultanément avec une denture de la couronne extérieure et une denture de la couronne intérieure, le couplage des deux chaînes étant assuré entre les couronnes extérieure et intérieure à l'aide d'au moins un pignon satellite de sortie monté fou sur le bras de sortie autour d'un axe parallèle à l'axe de rotation de l'organe de sortie et dont la denture est en prise, directe ou indirecte, avec une denture de chacune des deux dites couronnes.Among the devices for continuously changing speed which can be obtained by the invention, an advantageous embodiment is such that one of the two coupled kinematic chains has an outer ring while the other chain has an inner ring, both crowns being driven in rotation about the input axis by an input satellite gear, mounted idly in rotation on an arm secured to the input shaft, the said satellite gear being engaged simultaneously with a toothing of the outer ring and toothing of the inner ring, the coupling of the two chains being ensured between the outer and inner rings by means of at least one output satellite pinion mounted idly on the output arm around an axis parallel to the axis of rotation of the outlet member and the toothing of which is engaged, direct or indirect, with a toothing of each of the two said crowns.
D'autres avantages et caractéristiques de l'invention ressortiront plus clairement de la description donnée ci-après à titre indicatif et non limitatif de deux exemples de réalisation, de l'invention, en relation avec les dessins joints sur lesquels la figure 1 est une vue schématique, en coupe tranversale, d'un premier exemple de réalisation, la figure 2 est une est une vue partielle suivant II-II de la figure 1, la figure 3 est une représentation schématique analogue à la figure 2, de la partie supérieure d'une variante ou seconde réalisation du dispositif à changement de vitesse continu. En référence aux figures 1 et 2, le dispositif comprend un arbre moteur 1, représenté verticalement sur la figure 1, dont est solidaire en rotation un bras moteur ou d'entrée radial 2. A proximité de son extrémité radiale externe, ce bras d'entrée 2 présente une portée sur laquelle est monté fou en rotation un pignon conique 3. Ce pignon 3 est un satellite d'entrée dont la denture est en prise, dans sa partie inférieure, avec la denture d'un pignon conique 4 monté autour de l'arbre moteur 1 et solidaire en rotation, autour de l'axe d'entrée de cet arbre 1, d'une couronne extérieure 5. La couronne extérieure 5 est constituée d'un disque radial, qui porte le pignon denté 4, et d'un collet axial solidaire de la périphérie du disque radial. Par sa partie supérieure, la denture externe du satellite d'entrée 3 est simultanément en prise avec la denture d'un pignon conique 6 également monté en rotation autour de l'axe d'entrée de l'arbre moteur 1 et. solidaire, dans cette rotation, de la face inférieure d'une couronne intérieure 7 qui présente une denture externe périphérique 8. On obtient ainsi deux chaînes cinématiques, ayant en commun l'arbre moteur 1, le bras d'entrée 2 et le satellite d'entrée 3, et dont l'une, à partir de ce dernier, comprend le pignon denté 6 et la couronne intérieure 7, tandis que l'autre comprend, toujours à partir du satellite d'entrée 3, le pignon denté 4 et la couronne extérieure 5. En regard de la denture externe de la couronne intérieure 7, la couronne extérieure 5 présente, dans la partie supérieure de son collet, axial, une denture 9 sur la face interne de ce collet. Les deux chaînes cinématiques sont couplées par un pignon denté ou satellite de sortie 10, simultanément en prise avec la denture externe de la couronne intérieure et avec la denture interne de la couronne extérieure 5, et qui est monté fou en rotation autour d'un petit arbre 11, d'axe parallèle à l'arbre moteur 1, et porté sensiblement à l'extrémité d'un bras de sortie radial 12 solidaire en rotation de la partie inférieure d'un arbre de sortie 13 qui est tubulaire, monté autour du prolongement de l'arbre d'entrée 1 et coaxial à ce dernier.Other advantages and characteristics of the invention will emerge more clearly from the description given below by way of indication and without limitation of two exemplary embodiments of the invention, in relation to the attached drawings in which FIG. 1 is a schematic view, in transverse section, of a first embodiment, FIG. 2 is a is a partial view along II-II of FIG. 1, Figure 3 is a schematic representation similar to Figure 2, of the upper part of a variant or second embodiment of the device for continuous speed change. Referring to Figures 1 and 2, the device comprises a drive shaft 1, shown vertically in Figure 1, which is integral in rotation with a drive arm or radial inlet 2. Near its outer radial end, this arm input 2 has a bearing surface on which a conical pinion 3 is mounted for rotation. This pinion 3 is an input satellite whose teeth are engaged, in its lower part, with the teeth of a conical pinion 4 mounted around the driving shaft 1 and integral in rotation, around the entry axis of this shaft 1, with an outer ring 5. The outer ring 5 consists of a radial disc, which carries the toothed pinion 4, and an axial collar secured to the periphery of the radial disc. By its upper part, the external toothing of the input satellite 3 is simultaneously engaged with the toothing of a bevel gear 6 also mounted in rotation about the input axis of the motor shaft 1 and. integral with this rotation of the underside of an inner ring 7 which has a peripheral external toothing 8. Two kinematic chains are thus obtained, having in common the drive shaft 1, the input arm 2 and the satellite d input 3, one of which, from the latter, comprises the toothed pinion 6 and the inner ring 7, while the other comprises, still from the input satellite 3, the toothed pinion 4 and the outer ring 5. Opposite the external toothing of the inner ring 7, the outer ring 5 has, in the upper part of its collar, axial, toothing 9 on the internal face of this collar. The two kinematic chains are coupled by a toothed pinion or output satellite 10, simultaneously engaged with the external toothing of the inner crown and with the internal toothing of the outer crown 5, and which is mounted for rotation around a small tree 11, with an axis parallel to the motor shaft 1, and carried substantially at the end of a radial output arm 12 integral in rotation with the lower part of an output shaft 13 which is tubular, mounted around the extension input shaft 1 and coaxial with it.
Le dispositif représenté sur la figure 3 est identique à celui des figures 1 et 2 pour ce qui concerne sa partie inférieure, à savoir le montage de l'arbre d'entrée l, du bras radial d'entrée 2 et du satellite d'entrée 3 en prise à la fois avec une denture de la couronne extérieure 5 et une denture de la couronne intérieure 7. Par contre, dans sa partie supérieure, qui correspond essentiellement au couplage des deux chaînes cinématiques et à l'accouplement à l'arbre de sortie, le dispositif de la figure 3 comprend un nombre pair d'organes de transmission assurant ce couplage. Plus précisément, on retrouve un bras de sortie 12, solidaire en rotation de l'extrémité inférieure d'un arbre de sortie tubulaire 13, coaxial à l'arbre d'entrée 1, et ce bras de sortie 12 porte, au voisinage de son extrémité radiale externe, le petit arbre 11 autour duquel est monté fou en rotation le satellite de sortie 10. On retrouve également que la couronne extérieure 5 présente, au niveau de la partie supérieure de son collet axial, une denture interne 9. Mais, dans cet exemple, cette denture interne 9 de la couronne externe 5 est en prise avec une denture externe 14 du satellite de sortie 10 qui présente une seconde denture externe 15 en prise avec une courroie crantée 16 qui est également en prise avec la denture externe 8 de la couronne! interne 7. Les deux dentures 14 et 15 du pignon 10 peuvent être deux parties superposées d'une même denture extérieure, deux dentures et âgées de même rayon, ou encore la denture 15 peut être une denture de plus petit diamètre que la denture 14 et située radialement à l'intérieur de cette dernière, avec un léger décalage axial, pour éviter toute interférence entre la courroie crantée 16 et la denture interne 9 de la couronne externe 5. Dans cet exemple, il y a donc liaison indirecte entre le satellite de sortie 10 et la couronne interne 7.The device shown in FIG. 3 is identical to that of FIGS. 1 and 2 with regard to its lower part, namely the mounting of the input shaft 1, of the input radial arm 2 and of the input satellite 3 engaged with both a toothing of the outer crown 5 and a toothing of the inner crown 7. On the other hand, in its upper part, which essentially corresponds to the coupling of the two kinematic chains and to the coupling to the shaft of output, the device of Figure 3 comprises an even number of transmission members ensuring this coupling. More precisely, there is an outlet arm 12, integral in rotation with the lower end of a tubular outlet shaft 13, coaxial with the inlet shaft 1, and this outlet arm 12 carries, in the vicinity of its external radial end, the small shaft 11 around which the output satellite 10 is mounted for rotation. We also find that the external ring 5 has, at the upper part of its axial collar, an internal toothing 9. However, in this example, this internal toothing 9 of the outer ring 5 is engaged with an external toothing 14 of the output satellite 10 which has a second external toothing 15 engaged with a toothed belt 16 which is also engaged with the external toothing 8 of the crown! internal 7. The two teeth 14 and 15 of the pinion 10 can be two superimposed parts of the same external teeth, two teeth and aged with the same radius, or alternatively the teeth 15 can be a teeth of smaller diameter than the teeth 14 and located radially inside the latter, with a slight axial offset, to avoid any interference between the toothed belt 16 and the internal toothing 9 of the external crown 5. In this example, there is therefore an indirect link between the output satellite 10 and the inner ring 7.
La comparaison des deux exemples décrits ci-dessus amène à constater une différence essentielle : dans le dispositif des figures 1 et 2, le fonctionnement à vitesse nulle du satellite d'entrée 3 entraîne des actions de même sens exercées sur le bras moteur ou d'entrée 2 par les forces transmises par la couronne extérieure 4-5 et la couronne intérieure 6-7. Au contraire, dans l'exemple de la figure 3, ces forces transmises sont de sens opposé. Cette différence provient de la parité du nombre des organes de transmission assurant le couplage entre les chaînes cinématiques, et qui est impair (un seul pignon 10) dans la réalisation des figures 1 et 2, alors qu'il est pair (un pignon 10 et une courroie 16) dans la réalisation de la figure 3.The comparison of the two examples described above leads to note an essential difference: in the device of FIGS. 1 and 2, the operation at zero speed of the input satellite 3 leads to actions of the same direction exerted on the motor arm or input 2 by the forces transmitted by the outer ring 4-5 and the inner ring 6-7. On the contrary, in the example of FIG. 3, these transmitted forces are in opposite directions. This difference comes from the parity of the number of transmission members ensuring the coupling between the kinematic chains, and which is odd (a single pinion 10) in the embodiment of FIGS. 1 and 2, while it is even (a pinion 10 and a belt 16) in the embodiment of FIG. 3.
L'intérêt de cette constatation réside dans le fait que le blocage de l'une des deux couronnes entraîne, dans le premier exemple, un mouvement du bras de sortie 12 dans le même sens, bien qu'avec des démultiplications différentes, tandis que dans le second exemple, le mouvement du bras de sortie 12 serait inversé suivant la couronne bloquée. Il en résulte qu'un simple mécanisme de freinage, avec ou sans blocage total, permet l'inversion du sens de rotation à la sortie à partir d'une certaine puissance de freinage, le blocage l'entraînant immédiatement mais supprimant toute incidence sur le changement de vitesse, et. ceci dans tous les cas où le nombre d'organes de transmission liés directement ou indirectement au bras de sortie 12 sera d'ordre pair. Il est entendu que l'on peut, sans sortir de l'invention, modifier des détails de construction ou leur arrangement en vue d'obtenir un même résultat.The interest of this observation lies in the fact that the blocking of one of the two crowns causes, in the first example, a movement of the output arm 12 in the same direction, although with different gear ratios, while in the second example, the movement of the output arm 12 would be reversed according to the locked crown. As a result, a simple braking mechanism, with or without total blocking, allows the reversal of the direction of rotation at the output from a certain braking power, the blocking causing it immediately but eliminating any impact on the gear change, and. this in all cases where the number of transmission members linked directly or indirectly to the output arm 12 will be of even order. It is understood that one can, without departing from the invention, modify construction details or their arrangement in order to obtain the same result.
Par exemple, pour certaines applications, il peut être indispensable de fixer des limites à la vitesse de rotation de l'arbre de sortie 13. Cette vitesse de rotation peut être maintenue supérieure à un seuil minimum et/ou inférieure à un seuil maximum. Ceci peut être réalisé à l'aide d'un mécanisme anti-retour, tel qu'une roue libre ou une roue libre inversée, qui est monté sur l'une des pièces rotatives au moins de l'une au moins des deux chaînes cinématiques couplées ou encore sur le satellite d'entrée 3 commun aux deux chaînes, de manière à obtenir une valeur limite différente sur l'une des couronnes en fonction du centre de rotation pour lequel l'interdiction ou la limitation sera assuréeFor example, for certain applications, it may be essential to set limits on the speed of rotation of the output shaft 13. This speed of rotation can be maintained above a minimum threshold and / or below a maximum threshold. This can be achieved using a non-return mechanism, such as a free wheel or an inverted free wheel, which is mounted on at least one of the rotating parts of at least one of the two kinematic chains. coupled or on the input satellite 3 common to the two channels, so as to obtain a different limit value on one of the rings depending on the center of rotation for which the prohibition or limitation will be ensured
Une voie d'action supplémentaire, permettant d'infléchir le fonctionnement du dispositif, peut consister à introduire de l'extérieur une accélération ou une décélération sur l'une des deux chaînes de transmission couplées ou éventuellement sur les deux à la fois. Ceci peut être obtenu, par exemple, à l'aide d'un dispositif de freinage produisant ses effets sur l'une des deux couronnes. Une réalisation particulièrement intéressante consiste à exercer sur le satellite d'entrée 3 une poussée développée par une organe moteur distinct de l'arbre 1 et tendant à l'entraîner en rotation dans l'un ou l'autre sens, afin de créer un déséquilibre permanent visant à donner la priorité ou la primauté a l'une ou l'autre des deux chaînes cinématiques couplées, c'est-a-dire à favoriser soit la vitesse de rotation, soit le couple de rotation. L'une des deux solutions mention-née ci-dessus favorise un fonctionnement normal automatique du dispositif de changement de vitesse, tandis que l'autre solution proposée permet un fonctionnement en frein moteur. Ces deux réalisations peuvent être aisément mises en oeuvre à l'aide d'un moteur électrique réversible porté par exemple par le bras d'entrée 2 ou bras moteur et sollicitant le satellite d'entrée 3 afin de l'entraîner en rotation dans l'un ou l'autre sens.An additional course of action, making it possible to modify the operation of the device, may consist in introducing from the outside an acceleration or a deceleration on one of the two coupled transmission chains or possibly on both at the same time. This can be achieved, for example, using a braking device producing its effects on one of the two crowns. A particularly interesting embodiment consists in exerting on the input satellite 3 a thrust developed by a motor member distinct from the shaft 1 and tending to drive it in rotation in one or the other direction, in order to create an imbalance permanent aiming to give priority or primacy to one or the other of the two kinematic chains coupled, that is to say to favor either the speed of rotation, or the torque. One of the two solutions mentioned above promotes normal automatic operation of the speed change device, while the other proposed solution allows engine brake operation. These two embodiments can be easily implemented using a reversible electric motor carried for example by the input arm 2 or motor arm and urging the input satellite 3 in order to drive it in rotation in the one or the other sense.
On pourrait également utiliser concurrement plus de deux chaînes cinématiques dont les caractéristiques seraient choisies afin d'obtenir le meilleur rendement possible dans des plages déterminées de démultiplication. Le changement d'une plage de démultiplication pour une autre pourrait alors être obtenu en changeant l'une au moins des chaînes cinématiques couplées, et en déεacouplant de l'organe de sortie le ou les bras de sortie que l'on ne veut pas utiliser et qui correspondent à la ou aux chaînes cineraatiques qui ne sont plus couplées. Si, de plus, l'accouplement d'au moins un bras de sortie, et de préférence de tous les bras de sortie, à l'organe de sortie, est assuré par l'intermédiaire d'une roue libre, on réalise un dispositif à changement automatique de plage de démultiplication. On peut ainsi obtenir que le couple de chaînes cinématiques donnant la vitesse de sortie la plus élevée sera le seul à actionner l'arbre de sortie. It would also be possible to use more than two kinematic chains concurrently, the characteristics of which would be chosen in order to obtain the best possible yield within determined ranges of reduction. The change from one reduction range to another could then be obtained by changing at least one of the coupled kinematic chains, and by uncoupling the output arm (s) that one does not want to use and which correspond to the cineraatic chain or chains which are no longer coupled. If, in addition, the coupling of at least one output arm, and preferably of all the output arms, to the output member is ensured by means of a free wheel, a device is produced. with automatic gear range change. We can thus obtain that the couple of kinematic chains giving the highest output speed will be the only one to actuate the output shaft.

Claims

R E V E N D I CA T I O NS 1./- Dispositif a changement continu de vitesse comprenant, d'une part, un organe d'entrée relié a un organe moteur et au moins un organe de sortie et, d'autre part, au moins deux chaînes cinématiques utilisant chacune un système à satellites, l'un, au moins, de ces systèmes à satellites recevant de l'autre deux couples qui diffèrent au moins par la valeur de l'une de leurs composantes force et bras de levier, ce dispositif étant caractérisé en ce que l'axe de rotation de l'organe d'entrée est confondu avec l'axe de rotation d'au moins un organe de sortie tandis que l'axe de rotation du pignon fou (3) de l'un des systèmes à satellites est distinct de l'axe de rotation du pignon fou (10) de l'autre système à satellites. REVENDI CA TIO NS 1./- Device with continuous speed change comprising, on the one hand, an input member connected to a motor member and at least one output member and, on the other hand, at least two kinematic chains each using a satellite system, at least one of these satellite systems receiving from the other two couples which differ at least in the value of one of their force and lever arm components, this device being characterized in that the axis of rotation of the input member coincides with the axis of rotation of at least one output member while the axis of rotation of the idler gear (3) of one of the systems satellite system is distinct from the axis of rotation of the idler gear (10) of the other satellite system.
2. /- Dispositif suivant la revendication 1 comportant deux chaînes cinématiques caractérisé en ce que les axes des pignons fous des deux systèmes à satellites font entre eux un angle de 90º.2. / - Device according to claim 1 comprising two kinematic chains characterized in that the axes of the idler gears of the two satellite systems are between them an angle of 90º.
3./- Dispositif suivant la revendication 2 ayant un organe de sortie caractérisé en ce que l'une des deux chaînes cinématiques comporte une couronne extérieure (4,5) et l'autre, une couronne intérieure (6, 7), les deux couronnes étant entraînées en rotation autour de l'axe de rotation de l'organe d'entrée (1) par un pignon (3) monté fou en rotation sur un arbre radial (2) solidaire de l'organe d' entrée (1) et en priεe, d'une part ,avec une denture (4) de la couronne extérieure <5> et, d'autre part, avec une denture (6) de la couronne intérieure (7), le couplage des deux chaînes étant assuré, entre la couronne extérieure (5) et la couronne intérieure (7), par un pignon (10) monté fou sur un bras (12) solidaire de l'organe de sortie (13). 3./- Device according to claim 2 having an output member characterized in that one of the two kinematic chains has an outer ring (4,5) and the other, an inner ring (6, 7), both crowns being driven in rotation about the axis of rotation of the input member (1) by a pinion (3) mounted idly in rotation on a radial shaft (2) integral with the input member (1) and in prive, on the one hand, with a toothing (4) of the outer crown <5> and, on the other hand, with a toothing (6) of the inner crown (7), the coupling of the two chains being ensured , between the outer ring (5) and the inner ring (7), by a pinion (10) mounted idly on an arm (12) secured to the outlet member (13).
4./- Dispositif suivant la revendication 3 caractérisé en ce que l'axe de rotation du pignon fou (10) est parallèle à l'axe de rotation de l'organe de sortie4./- Device according to claim 3 characterized in that the axis of rotation of the idler gear (10) is parallel to the axis of rotation of the output member
5./- Dispositif suivant l'une des revendications 3 ou 4 caractérisé en ce que l'organe de sortie (13) est solidaire de l'une quelconque des pièces tournant autour d'un axe de rotation identique à l'axe de rotation.5./- Device according to one of claims 3 or 4 characterized in that the outlet member (13) is integral with any of the parts rotating about an axis of rotation identical to the axis of rotation .
6./- Dispositif suivant l'une des revendications 2 à 5 caractérisé en ce que le pignon fou (10) d'au moins l'un des systèmes à satellites comporte deux couronnes dentées qui ont des diamètres différents et dont chacune reçoit l'un des couples transmis par l'autre système à satellites. 6./- Device according to one of claims 2 to 5 characterized in that the idler gear (10) of at least one of the satellite systems comprises two toothed rings which have different diameters and each of which receives the one of the torques transmitted by the other satellite system.
7./- Dispositif suivant l'une des revendications 1 a 6 caractérisé en ce qu'un moteur électrique réversible est monté en prise avec l'une des pièces tournantes du dit dispositif.7./- Device according to one of claims 1 to 6 characterized in that a reversible electric motor is mounted in engagement with one of the rotating parts of said device.
8./- Dispositif suivant l'une des revendications 1 a 7 caractérisé en ce que l'accouplement entre deux pièces tournantes du dit dispositif est assuré par un dispositif anti-retour. 8./- Device according to one of claims 1 to 7 characterized in that the coupling between two rotating parts of said device is provided by a non-return device.
PCT/FR1987/000034 1986-02-06 1987-02-06 Continuous gear shifting device WO1987004764A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8601606A FR2593874A1 (en) 1986-02-06 1986-02-06 CONTINUOUSLY SPEED CHANGE DEVICE
FR86/01606 1986-02-06

Publications (1)

Publication Number Publication Date
WO1987004764A1 true WO1987004764A1 (en) 1987-08-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1987/000034 WO1987004764A1 (en) 1986-02-06 1987-02-06 Continuous gear shifting device

Country Status (5)

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EP (1) EP0259369A1 (en)
CN (1) CN87101898A (en)
AU (1) AU6937887A (en)
FR (1) FR2593874A1 (en)
WO (1) WO1987004764A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4217856A1 (en) * 1992-05-29 1993-12-02 Klaus Dr Hesse Mechanical gearbox with slippage - has differential combination between input and output shafts
ITFE20120011A1 (en) * 2012-07-23 2014-01-24 Constantin Edyson Pavilcu MECHANISM FOR THE CONTINUOUS VARIATION OF THE NUMBER SPINS OF A MECHANICAL TRANSMISSION

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2813368A1 (en) 2000-08-23 2002-03-01 Jean Claude Kapikian Variable ratio transmission system comprises first differential transmitting torque and speed from drive motor through second differential to drive driven shaft

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR415706A (en) * 1910-05-07 1910-10-03 Joseph Nicolas Kieffer Automatic and progressive speed transformer
GB478705A (en) * 1936-07-21 1938-01-21 John Herbert Cole Improvements in variable speed gears
FR907453A (en) * 1944-04-19 1946-03-13 S E C A T Soc D Etude Et De Co Progressive multiplication device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450385A2 (en) * 1979-02-28 1980-09-26 Combastet Michel Torque converter with differential gear trains - has fixed stop or bearing acting on rotary components to regulate torque fluctuation
DE3421835A1 (en) * 1984-06-13 1985-12-19 Josef 6460 Gelnhausen Wobst Torque converter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR415706A (en) * 1910-05-07 1910-10-03 Joseph Nicolas Kieffer Automatic and progressive speed transformer
GB478705A (en) * 1936-07-21 1938-01-21 John Herbert Cole Improvements in variable speed gears
FR907453A (en) * 1944-04-19 1946-03-13 S E C A T Soc D Etude Et De Co Progressive multiplication device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4217856A1 (en) * 1992-05-29 1993-12-02 Klaus Dr Hesse Mechanical gearbox with slippage - has differential combination between input and output shafts
ITFE20120011A1 (en) * 2012-07-23 2014-01-24 Constantin Edyson Pavilcu MECHANISM FOR THE CONTINUOUS VARIATION OF THE NUMBER SPINS OF A MECHANICAL TRANSMISSION

Also Published As

Publication number Publication date
AU6937887A (en) 1987-08-25
EP0259369A1 (en) 1988-03-16
CN87101898A (en) 1987-09-16
FR2593874A1 (en) 1987-08-07

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