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EP1706796A1 - Timepiece comprising two turbillons - Google Patents

Timepiece comprising two turbillons

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Publication number
EP1706796A1
EP1706796A1 EP04761967A EP04761967A EP1706796A1 EP 1706796 A1 EP1706796 A1 EP 1706796A1 EP 04761967 A EP04761967 A EP 04761967A EP 04761967 A EP04761967 A EP 04761967A EP 1706796 A1 EP1706796 A1 EP 1706796A1
Authority
EP
European Patent Office
Prior art keywords
movement
cage
plane
vortices
differential gear
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.)
Granted
Application number
EP04761967A
Other languages
German (de)
French (fr)
Other versions
EP1706796B1 (en
Inventor
Stephen Edward Methuen Forsey
Robert Greubel
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.)
GFPI SA
Original Assignee
GFPI SA
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Filing date
Publication date
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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
    • G04B17/285—Tourbillons or carrousels

Definitions

  • the present invention relates to movements for so-called mechanical timepieces. It relates more particularly to a movement which comprises a frame defining a reference plane hereinafter called the movement plane and on which are mounted: - a source of mechanical energy, - a gear train driven by said energy source and arranged so as to be able to support time display means, - a time base comprising two balance springs and two escapements, and - a differential gear ensuring a kinematic connection between the gear train and the escapements.
  • the daytime running of the watch is equal to the average of the daytime running of the two balance-springs.
  • the differential independently supplies the exhausts that maintain the movement of the two balance springs.
  • a coupling may appear, so that, cyclically, the amplitude of one pendulum can decrease while that of the other increases, and this in proportions that can be important. If therefore, one does not want to fear that a pendulum will rebound, it is necessary that the amplitude is considerably reduced, which goes against the desired goal.
  • the two balance springs are mounted on the same tourbillon cage, which carries two escapements and a differential ensuring the supply of the two escapements. In this case also, the risk of beating exists. Furthermore, as the two pendulums are arranged side by side, their cumulative diameters cannot exceed the radius of the movement.
  • the object of the present invention is to provide a movement provided with two balance springs which can be of large diameter, without risk of coupling.
  • the time base comprises two vortices, each provided with a cage carrying an escapement and a balance-spring. These cages are driven at least medially in rotation by the differential gear.
  • the term tourbillon is to be taken in the broad sense, also covering carousels. With such a configuration, the fact that the hairsprings are each secured to a tourbillon cage, which is rotatably mounted on the frame, makes coupling practically impossible.
  • each balance is mounted on a cage, it follows that its diameter is only very little smaller than that of the cage.
  • the regulating quality of a pendulum is all the better the larger its diameter, because the growth of the moment of inertia as a function of the diameter is faster than that of the weight. Thus, the precision of the movement can be improved significantly.
  • the tourbillons In order to reduce the distance between the horizontal and vertical positions, at least one of the tourbillons has a cage which pivots about an axis which is not orthogonal to the plane of movement. In this way, whatever the position of the timepiece, the two axes of the pendulums will never be vertical simultaneously, which means that, in addition to the advantages mentioned above, the gait differences between the different positions of the watch are noticeably weaker.
  • the tourbillon comprising a cage whose axis is non-orthogonal to the plane of movement comprises a second cage, pivotally mounted on the frame around an axis orthogonal to the plane of movement and in which the first cage pivots.
  • the movement according to the invention comprises, in a conventional manner, a frame consisting of a plate 10 and at least one bridge 11 and defining a reference plane called the plane of movement, on which the various cogs, levers and rockers pivot, around axes perpendicular to this plane.
  • the figure shows a medium wheel 12, part of a gear train driven by a barrel which it is useless to represent.
  • This wheel meshes with a mobile performing one revolution per minute and comprising a shaft provided with a pinion 13 engaged with the average wheel 12 and a wheel 14.
  • a seconds hand 15 is driven out on one of the ends of the tree.
  • the latter carries, in addition, mounted free in rotation, a first mobile formed by a pinion 16 whose function will appear further on and a wheel 17 meshing with a pinion 18 secured to the cage 19 of a first vortex 20.
  • This vortex pivots in the frame around an axis AA perpendicular to the plane of movement.
  • the cage 19 carries an escape wheel 21 which drives an anchor and, by it, a balance-spring, these last two components not being shown to avoid overloading the drawing. More complete information concerning this type of tourbillons can be found in the work entitled “Clockmaking theory”, Chs-A. Reymondin et al, ISBN 2-940025-10- X.
  • a wheel 22, having the same diameter and the same number of teeth as the wheel 17, is also mounted to rotate freely on the shaft 13. It meshes with the pinion 23 of a first cage 24 which comprises a second vortex 25.
  • the pinion 23 and the cage 24 pivot in the frame around an axis BB perpendicular to the plane of movement.
  • a second cage 26 is pivotally mounted on the first cage 24, around an axis CC making an acute angle, typically 30 ° with the axis BB.
  • the cage 26 carries an escape wheel 27 which drives an anchor and by it a balance-spring, these last two components not having been shown in the drawing to avoid overloading it.
  • the structure and operation of a tourbillon of this type are described in detail in patent application WO / 03017009 filed in the name of the applicant.
  • the wheel 22 carries a satellite comprising a first satellite pinion 28 mounted on one face thereof, in engagement with the wheel 14 and rigidly coupled, by means of a screw 29, to a second satellite pinion 30 disposed on the 'other face of the wheel 22 and meshing with the pinion 16. It will be noted that these two planet gears have substantially different diameters.
  • the mechanism formed by the shaft 13, the wheels 14, 17 and 22 and the pinions 16, 28 and 30 constitutes a differential gear 31 which makes it possible to drive the cages 19 and 24 of the two vortices 20 and 25 at their own pace. Indeed, each of the cages turns in jerks, each time the escapement gives an impulse to the balance. This therefore amounts to saying that, during each driving pulse, the differential train turns and drives one or the other of the cages, or even both simultaneously.
  • the differential train is itself driven by the medium wheel 12 which is driven by the barrel.
  • the average wheel 12 acts, through the pinion 13 and the wheel 14, on the pinion-satellite 28. It thus generates torques applied one on the pinion 16 by the pinion-satellite 30, the other directly on the wheel 22, because the pinions 28 and 30 do not have the same number of teeth.
  • the vortices can both be of the same type as the vortex 20 with their axes parallel to each other and perpendicular to the plane of movement. They can also both be of the same type as the tourbillon 25, that is to say each comprising two cages, one of which is not orthogonal to the plane of movement. It is also possible that the cages pivot directly in the frame, on axes which are not orthogonal to the plane of movement.
  • the periods and directions of rotation of the vortices can be the same or different, defined by the gear ratios of the differential.
  • balance springs such as their period of oscillation or their moment of inertia may be similar or different.
  • an intermediate train will advantageously be interposed between the differential wheel and the tourbillon pinion, so that the angle traveled by the mean wheel 12 is the same for the two vortices, so that the energy supplied to each of the vortices is the same.
  • the tourbillon cages have the same frequency of rotation, these will advantageously be equipped with means for identifying their position, which will make it possible to independently determine the progress of each of the tourbillons, and thus facilitate the adjustment of the movement.
  • the same principles are also applicable to a movement which would include more than two balance springs, providing, for example, a cage of two pendulums, as described in the catalog mentioned above, and a second cage comprising a single pendulum. It is even possible to equip the movement with a third tourbillon.
  • one and / or the other of the vortices could also be of the type with two or three cages, for example orthogonal.
  • the movement is equipped with at least two tourbillons, it is possible to improve its precision without the risk of fluttering phenomena, while giving it a prestigious character.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)

Abstract

A movement for a watchmaking piece comprising a frame (10, 11) defining a reference plane and, mounted thereon, a mechanical energy source, a clockwork watch movement driven by said energy source and adapted in such a way as to be able to bear means for displaying the time, and a time base comprising two balance wheels and two escapements, and a differential gear (31) ensuring a kinematic link between the clockwork watch movement and the escapements. According to the invention, the time base comprises two tourbillons (20,25) each of which is provided with a cage (19,26) bearing an escapement and a balance wheel, said cages being rotationally driven at least intermediately by said differential gear (31).

Description

PIECE D'HORLOGERIE COMPORTANT DEUX TOURBILLONS CLOCK PIECE COMPRISING TWO TOURBILLONS
La présente invention se rapporte aux mouvements pour pièces d'horlogerie dites mécaniques. Elle concerne plus particulièrement un mouvement qui comporte un bâti définissant un plan de référence appelé ci-après plan du mouvement et sur lequel sont montés : - une source d'énergie mécanique, - un rouage de finissage entraîné par ladite source d'énergie et agencé de manière à pouvoir supporter des moyens d'affichage de l'heure, - une base de temps comportant deux balanciers-spiraux et deux échappements, et - un engrenage différentiel assurant une liaison cinématique entre le rouage de finissage et les échappements.The present invention relates to movements for so-called mechanical timepieces. It relates more particularly to a movement which comprises a frame defining a reference plane hereinafter called the movement plane and on which are mounted: - a source of mechanical energy, - a gear train driven by said energy source and arranged so as to be able to support time display means, - a time base comprising two balance springs and two escapements, and - a differential gear ensuring a kinematic connection between the gear train and the escapements.
Une pièce de ce type est décrite dans le « Catalogue d'œuvres choisies du musée international d'horlogerie », pièce No 417, ISBN 2-940088-07-1.A piece of this type is described in the “Catalog of selected works from the international clock museum”, piece No 417, ISBN 2-940088-07-1.
De la sorte, la marche diurne de la montre est égale à la moyenne des marches diurnes des deux balanciers-spiraux.In this way, the daytime running of the watch is equal to the average of the daytime running of the two balance-springs.
Il y est question de deux variantes. Dans la première, le différentiel alimente de manière indépendante les échappements entretenant le mouvement des deux balanciers-spiraux. Comme l'extrémité des spiraux est fixée au même bâti, il peut apparaître un couplage, de telle sorte que, cycliquement, l'amplitude d'un balancier peut diminuer alors que celle de l'autre augmente, et cela dans des proportions qui peuvent être importantes. Si donc, on ne veut pas craindre qu'un balancier ne rebatte, il est nécessaire que l'amplitude soit considérablement réduite, ce qui va à rencontre du but recherché.There are two variants. In the first, the differential independently supplies the exhausts that maintain the movement of the two balance springs. As the end of the balance springs is fixed to the same frame, a coupling may appear, so that, cyclically, the amplitude of one pendulum can decrease while that of the other increases, and this in proportions that can be important. If therefore, one does not want to fear that a pendulum will rebound, it is necessary that the amplitude is considerably reduced, which goes against the desired goal.
Dans la deuxième variante, les deux balanciers-spiraux sont montés sur une même cage de tourbillon, laquelle porte deux échappements et un différentiel assurant l'alimentation des deux échappements. Dans ce cas également, le risque de battement est existant. Par ailleurs, comme les deux balanciers sont disposés côte à côte, leurs diamètres cumulés ne peuvent dépasser le rayon du mouvement.In the second variant, the two balance springs are mounted on the same tourbillon cage, which carries two escapements and a differential ensuring the supply of the two escapements. In this case also, the risk of beating exists. Furthermore, as the two pendulums are arranged side by side, their cumulative diameters cannot exceed the radius of the movement.
Le but de la présente invention est de proposer un mouvement muni de deux balanciers-spiraux qui peuvent être de grand diamètre, sans risque de couplage. Ce but est atteint grâce au fait que la base de temps comporte deux tourbillons, chacun muni d'une cage portant un échappement et un balancier- spiral. Ces cages sont entraînées au moins médiatement en rotation par l'engrenage différentiel. Dans la présente demande, le terme de tourbillon est à prendre au sens large, couvrant aussi les carrousels. Avec une telle configuration, le fait que les spiraux soient solidaires chacun d'une cage de tourbillon, laquelle est montée rotative sur le bâti, rend un couplage pratiquement impossible. De plus, comme chaque balancier est monté sur une cage, il en résulte que son diamètre n'est que très peu plus petit que celui de la cage. Or, la qualité réglante d'un balancier est d'autant meilleure que son diamètre est grand, du fait que la croissance du moment d'inertie en fonction du diamètre est plus rapide que celle du poids. Ainsi, la précision du mouvement peut être améliorée de manière sensible.The object of the present invention is to provide a movement provided with two balance springs which can be of large diameter, without risk of coupling. This object is achieved thanks to the fact that the time base comprises two vortices, each provided with a cage carrying an escapement and a balance-spring. These cages are driven at least medially in rotation by the differential gear. In the present application, the term tourbillon is to be taken in the broad sense, also covering carousels. With such a configuration, the fact that the hairsprings are each secured to a tourbillon cage, which is rotatably mounted on the frame, makes coupling practically impossible. In addition, as each balance is mounted on a cage, it follows that its diameter is only very little smaller than that of the cage. However, the regulating quality of a pendulum is all the better the larger its diameter, because the growth of the moment of inertia as a function of the diameter is faster than that of the weight. Thus, the precision of the movement can be improved significantly.
Afin de réduire l'écart de marche entre les positions horizontales et verticales, au moins l'un des tourbillons comporte une cage qui pivote autour d'un axe non orthogonal au plan du mouvement. De la sorte, quelle que soit la position de la pièce d'horlogerie, les deux axes des balanciers ne seront jamais verticaux simultanément, ce qui fait que, en plus des avantages évoqués ci- dessus, les écarts de marche entre les différentes positions de la montre sont sensiblement plus faibles. Plus particulièrement, le tourbillon comportant une cage dont l'axe est non orthogonal au plan du mouvement comprend une deuxième cage, montée pivotante sur le bâti autour d'un axe orthogonal au plan du mouvement et dans laquelle pivote la première cage.In order to reduce the distance between the horizontal and vertical positions, at least one of the tourbillons has a cage which pivots about an axis which is not orthogonal to the plane of movement. In this way, whatever the position of the timepiece, the two axes of the pendulums will never be vertical simultaneously, which means that, in addition to the advantages mentioned above, the gait differences between the different positions of the watch are noticeably weaker. More particularly, the tourbillon comprising a cage whose axis is non-orthogonal to the plane of movement comprises a second cage, pivotally mounted on the frame around an axis orthogonal to the plane of movement and in which the first cage pivots.
Si les deux tourbillons tournent à une même vitesse angulaire, les mêmes conditions se retrouvent à chaque tours. De la sorte, la marche moyenne de la pièce d'horlogerie fluctuera périodiquement. Il est possible de réduire cette fluctuation grâce au fait que l'engrenage différentiel est agencé de manière à ce que les tourbillons tournent à des vitesses angulaires différentes.If the two vortices rotate at the same angular speed, the same conditions are found at each revolution. In this way, the average march of the timepiece will fluctuate periodically. It is possible to reduce this fluctuation by virtue of the fact that the differential gear is arranged so that the vortices rotate at different angular speeds.
D'autres caractéristiques de l'invention ressortiront de la description qui va suivre, faite en regard de la figure unique annexée qui est une vue partielle en coupe axiale de ce mouvement d'horlogerie.Other characteristics of the invention will emerge from the description which follows, made with reference to the single appended figure which is a partial view in axial section of this timepiece movement.
Le mouvement selon l'invention comporte, de manière classique, un bâti constitué d'une platine 10 et d'au moins un pont 11 et définissant un plan de référence appelé plan du mouvement, sur lesquels pivotent les différents rouages, leviers et bascules, autour d'axes perpendiculaires à ce plan.The movement according to the invention comprises, in a conventional manner, a frame consisting of a plate 10 and at least one bridge 11 and defining a reference plane called the plane of movement, on which the various cogs, levers and rockers pivot, around axes perpendicular to this plane.
La figure montre une roue de moyenne 12, partie d'un rouage de finissage entraîné par un barillet qu'il est inutile de représenter. Cette roue engrène avec un mobile effectuant un tour par minute et comportant un arbre muni d'un pignon 13 en prise avec la roue de moyenne 12 et d'une roue 14. Une aiguille de secondes 15 est chassée sur l'une des extrémités de l'arbre.The figure shows a medium wheel 12, part of a gear train driven by a barrel which it is useless to represent. This wheel meshes with a mobile performing one revolution per minute and comprising a shaft provided with a pinion 13 engaged with the average wheel 12 and a wheel 14. A seconds hand 15 is driven out on one of the ends of the tree.
Ce dernier porte, en outre, monté libre en rotation, un premier mobile formé d'un pignon 16 dont la fonction apparaîtra plus loin et d'une roue 17 engrenant avec un pignon 18 solidaire de la cage 19 d'un premier tourbillon 20. Ce tourbillon pivote dans le bâti autour d'un axe A-A perpendiculaire au plan du mouvement.The latter carries, in addition, mounted free in rotation, a first mobile formed by a pinion 16 whose function will appear further on and a wheel 17 meshing with a pinion 18 secured to the cage 19 of a first vortex 20. This vortex pivots in the frame around an axis AA perpendicular to the plane of movement.
La cage 19 porte une roue d'échappement 21 qui entraîne une ancre et, par elle, un balancier-spiral, ces deux derniers composants n'étant pas représentés pour éviter de surcharger le dessin. Une information plus complète concernant ce type de tourbillons peut être trouvée dans l'ouvrage intitulé « Théorie d'horlogerie », Chs-A. Reymondin et al, ISBN 2-940025-10- X.The cage 19 carries an escape wheel 21 which drives an anchor and, by it, a balance-spring, these last two components not being shown to avoid overloading the drawing. More complete information concerning this type of tourbillons can be found in the work entitled “Clockmaking theory”, Chs-A. Reymondin et al, ISBN 2-940025-10- X.
Une roue 22, ayant le même diamètre et le même nombre de dents que la roue 17, est également montée libre en rotation sur l'arbre 13. Elle engrène avec le pignon 23 d'une première cage 24 que comporte un deuxième tourbillon 25. Le pignon 23 et la cage 24 pivotent dans le bâti autour d'un axe B-B perpendiculaire au plan du mouvement. Une deuxième cage 26 est montée pivotante sur la première cage 24, autour d'un axe C-C faisant un angle aigu, typiquement de 30° avec l'axe B-B. La cage 26 porte une roue d'échappement 27 qui entraîne une ancre et par elle un balancier-spiral, ces deux derniers composants n'ayant pas été représentés au dessin pour éviter de le surcharger. La structure et le fonctionnement d'un tourbillon de ce type sont décrits de manière détaillée dans la demande de brevet WO/03017009 déposée au nom de la demanderesse.A wheel 22, having the same diameter and the same number of teeth as the wheel 17, is also mounted to rotate freely on the shaft 13. It meshes with the pinion 23 of a first cage 24 which comprises a second vortex 25. The pinion 23 and the cage 24 pivot in the frame around an axis BB perpendicular to the plane of movement. A second cage 26 is pivotally mounted on the first cage 24, around an axis CC making an acute angle, typically 30 ° with the axis BB. The cage 26 carries an escape wheel 27 which drives an anchor and by it a balance-spring, these last two components not having been shown in the drawing to avoid overloading it. The structure and operation of a tourbillon of this type are described in detail in patent application WO / 03017009 filed in the name of the applicant.
La roue 22 porte un satellite comprenant un premier pignon-satellite 28 monté sur une face de celle-ci, en prise avec la roue 14 et accouplé rigidement, au moyen d'une vis 29, à un deuxième pignon-satellite 30 disposé sur l'autre face de la roue 22 et engrenant avec le pignon 16. On remarquera que ces deux pignons-satellites ont des diamètres sensiblement différents.The wheel 22 carries a satellite comprising a first satellite pinion 28 mounted on one face thereof, in engagement with the wheel 14 and rigidly coupled, by means of a screw 29, to a second satellite pinion 30 disposed on the 'other face of the wheel 22 and meshing with the pinion 16. It will be noted that these two planet gears have substantially different diameters.
Le mécanisme formé de l'arbre 13, des roues 14, 17 et 22 et des pignons 16, 28 et 30 constitue un engrenage différentiel 31 qui permet d'entraîner les cages 19 et 24 des deux tourbillons 20 et 25 à leur propre rythme. En effet, chacune des cages tourne par saccades, chaque fois que l'échappement donne une impulsion au balancier. Cela revient donc à dire que, lors de chaque impulsion motrice, le rouage différentiel tourne et entraîne l'une ou l'autre des cages, voire les deux simultanément. Le rouage différentiel est lui- même entraîné par la roue de moyenne 12 qui est mue par le barillet.The mechanism formed by the shaft 13, the wheels 14, 17 and 22 and the pinions 16, 28 and 30 constitutes a differential gear 31 which makes it possible to drive the cages 19 and 24 of the two vortices 20 and 25 at their own pace. Indeed, each of the cages turns in jerks, each time the escapement gives an impulse to the balance. This therefore amounts to saying that, during each driving pulse, the differential train turns and drives one or the other of the cages, or even both simultaneously. The differential train is itself driven by the medium wheel 12 which is driven by the barrel.
En fonctionnement, la roue de moyenne 12 agit, par le pignon 13 et la roue 14, sur le pignon-satellite 28. Il engendre ainsi des couples appliqués l'un sur le pignon 16 par le pignon-satellite 30, l'autre directement sur la roue 22, du fait que les pignons 28 et 30 n'ont pas le même nombre de dents.In operation, the average wheel 12 acts, through the pinion 13 and the wheel 14, on the pinion-satellite 28. It thus generates torques applied one on the pinion 16 by the pinion-satellite 30, the other directly on the wheel 22, because the pinions 28 and 30 do not have the same number of teeth.
Pour une détermination précise des caractéristiques de l'engrenage différentiel qui vient d'être décrit, on se référera au document intitulé « Les engrenages d'horlogerie » Tome II, P. Augereau, édité à l'occasion des journées d'étude à l'intention des professeurs de l'enseignement horloger, organisé les 12 et 13 décembre 1996 au CETEHOR (Besançon, France). Le mouvement tel qu'il vient d'être décrit peut faire l'objet de nombreuses variantes. Ainsi, les tourbillons peuvent être tous les deux du même type que le tourbillon 20 avec leurs axes parallèles entre eux et perpendiculaires au plan du mouvement. Ils peuvent aussi être tous les deux du même type que le tourbillon 25, c'est à dire comportant chacun deux cages, dont l'une est non orthogonales au plan du mouvement. Il est également possible que les cages pivotent directement dans le bâti, sur des axes non orthogonaux au plan du mouvement.For a precise determination of the characteristics of the differential gear which has just been described, reference is made to the document entitled "Clockwork gears" Volume II, P. Augereau, published on the occasion of the study days at the 'intention of watchmaking teachers, organized on December 12 and 13, 1996 at CETEHOR (Besançon, France). The movement as just described can be the subject of numerous variants. Thus, the vortices can both be of the same type as the vortex 20 with their axes parallel to each other and perpendicular to the plane of movement. They can also both be of the same type as the tourbillon 25, that is to say each comprising two cages, one of which is not orthogonal to the plane of movement. It is also possible that the cages pivot directly in the frame, on axes which are not orthogonal to the plane of movement.
Les périodes et les sens de rotation des tourbillons peuvent être les mêmes ou différents, définies par les rapports d'engrenages du différentiel.The periods and directions of rotation of the vortices can be the same or different, defined by the gear ratios of the differential.
Les caractéristiques des balanciers-spiraux telles que leur période d'oscillation ou leur moment d'inertie peuvent être semblables ou différentes.The characteristics of balance springs such as their period of oscillation or their moment of inertia may be similar or different.
Au cas où les périodes des tourbillons sont différentes, alors que les balanciers ont la même fréquence et le même diamètre, un rouage intermédiaire sera avantageusement intercalé entre la roue du différentiel et le pignon du tourbillon, de manière à ce que l'angle parcouru par la roue de moyenne 12 soit le même pour les deux tourbillons, ce qui fait que l'énergie fournie à chacun des tourbillons est la même.In case the periods of the tourbillons are different, while the balance wheels have the same frequency and the same diameter, an intermediate train will advantageously be interposed between the differential wheel and the tourbillon pinion, so that the angle traveled by the mean wheel 12 is the same for the two vortices, so that the energy supplied to each of the vortices is the same.
Dans le cas où les cages de tourbillons ont une même fréquence de rotation, celles-ci seront avantageusement équipées de moyens d'identification de leur position, qui permettra de déterminer indépendamment la marche de chacun des tourbillons, et ainsi faciliter le réglage du mouvement.In the case where the tourbillon cages have the same frequency of rotation, these will advantageously be equipped with means for identifying their position, which will make it possible to independently determine the progress of each of the tourbillons, and thus facilitate the adjustment of the movement.
Les mêmes principes sont également applicables à un mouvement qui comporterait plus de deux balanciers-spiraux, en munissant, par exemple, une cage de deux balanciers, comme cela est décrit dans le catalogue mentionné plus haut, et une deuxième cage comportant un seul balancier. Il est même envisageable d'équiper le mouvement d'un troisième tourbillon.The same principles are also applicable to a movement which would include more than two balance springs, providing, for example, a cage of two pendulums, as described in the catalog mentioned above, and a second cage comprising a single pendulum. It is even possible to equip the movement with a third tourbillon.
Il est évident que l'un et/ou l'autre des tourbillons pourraient aussi être du type à deux ou trois cages, par exemple orthogonales. Ainsi, grâce au fait que le mouvement est équipé d'au moins deux tourbillons, il est possible d'améliorer sa précision sans risque de phénomènes de battement, tout en lui conférant un caractère prestigieux. It is obvious that one and / or the other of the vortices could also be of the type with two or three cages, for example orthogonal. Thus, thanks to the fact that the movement is equipped with at least two tourbillons, it is possible to improve its precision without the risk of fluttering phenomena, while giving it a prestigious character.

Claims

REVENDICATIONS 1. Mouvement pour pièce d'horlogerie de type comportant un bâti (10, 11) définissant un plan de référence et, montés sur celui-ci : - une source d'énergie mécanique, - un rouage de finissage entraîné par ladite source d'énergie et agencé de manière à pouvoir supporter des moyens d'affichage de l'heure, - une base de temps comportant deux balanciers et deux échappements, et - un engrenage différentiel (31) assurant une liaison cinématique entre ledit rouage de finissage et lesdits échappements, caractérisé en ce que ladite base de temps comporte au moins deux tourbillons (20, 25), chacun muni d'une cage (19, 26) portant un échappement et un balancier, lesdites cages étant entraînées au moins médiatement en rotation par ledit engrenage différentiel (31). 2. Mouvement selon la revendication 1 , caractérisé en ce qu'au moins l'un desdits tourbillons (25) comporte une cage (26) qui pivote autour d'un axe (C-C) non orthogonal au plan du mouvement. 3. Mouvement selon la revendication 2, caractérisé en ce que le tourbillon (25) comportant une cage (26) dont l'axe (C-C) est non orthogonal au plan du mouvement comporte une deuxième cage (24) montée pivotante sur le bâti et dans laquelle pivote la première cage (26). 4. Mouvement selon la revendication 3, caractérisé en ce que l'axe de pivotement (B-B) de la deuxième cage (24) est orthogonal au plan du mouvement. 5. Mouvement selon la revendication 1 , caractérisé en ce que ledit engrenage différentiel (31) est agencé de manière à ce que les tourbillons (0, 25) tournent à des vitesses angulaires différentes. CLAIMS 1. Movement for a timepiece of the type comprising a frame (10, 11) defining a reference plane and, mounted thereon: - a source of mechanical energy, - a gear train driven by said source d energy and arranged so as to be able to support time display means, - a time base comprising two pendulums and two exhausts, and - a differential gear (31) ensuring a kinematic connection between said gear train and said escapements, characterized in that said time base comprises at least two vortices (20, 25), each provided with a cage (19, 26) carrying an escapement and a balance, said cages being driven at least medially in rotation by said differential gear (31). 2. Movement according to claim 1, characterized in that at least one of said vortices (25) comprises a cage (26) which pivots about an axis (C-C) not orthogonal to the plane of movement. 3. Movement according to claim 2, characterized in that the tourbillon (25) comprising a cage (26) whose axis (CC) is not orthogonal to the plane of movement comprises a second cage (24) pivotally mounted on the frame and in which the first cage pivots (26). 4. Movement according to claim 3, characterized in that the pivot axis (B-B) of the second cage (24) is orthogonal to the plane of movement. 5. Movement according to claim 1, characterized in that said differential gear (31) is arranged so that the vortices (0, 25) rotate at different angular speeds.
EP04761967A 2003-10-31 2004-10-18 Timepiece comprising two turbillons Expired - Lifetime EP1706796B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH18652003A CH694833A5 (en) 2003-10-31 2003-10-31 Timepiece including two balances.
PCT/CH2004/000627 WO2005043257A1 (en) 2003-10-31 2004-10-18 Watchmaking piece comprising two turbillons

Publications (2)

Publication Number Publication Date
EP1706796A1 true EP1706796A1 (en) 2006-10-04
EP1706796B1 EP1706796B1 (en) 2007-06-13

Family

ID=34529365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04761967A Expired - Lifetime EP1706796B1 (en) 2003-10-31 2004-10-18 Timepiece comprising two turbillons

Country Status (4)

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EP (1) EP1706796B1 (en)
CH (1) CH694833A5 (en)
DE (1) DE602004007045T2 (en)
WO (1) WO2005043257A1 (en)

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WO2013104634A1 (en) 2012-01-10 2013-07-18 Lvmh Swiss Manufactures Sa Watch movement comprising a tourbillon for a chronograph
WO2017084972A1 (en) 2015-11-17 2017-05-26 Complitime Sa Horology movement
EP3399374A1 (en) 2017-05-05 2018-11-07 Gfpi Sa Clockwork

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US7527423B2 (en) 2004-04-15 2009-05-05 Montres Breguet Sa Watch comprising two tourbillons
DE602005009316D1 (en) * 2005-01-28 2008-10-09 Richemont Int Sa Clock with tourbillon
DE602005021748D1 (en) * 2005-03-30 2010-07-22 Montres Breguet Sa Watch with at least two regulating systems
ATE462159T1 (en) * 2005-07-13 2010-04-15 Artisans Horlogers Sarl CLOCK
US7568831B2 (en) 2006-10-06 2009-08-04 Tiffany & Co. Watch Center Ag Tourbillion-type timepiece movement
EP2275879B1 (en) 2007-02-08 2019-12-11 CompliTime SA Platform escapement
CH702707B1 (en) 2007-04-05 2011-08-31 Complitime Sa workpiece movement of tourbillon watches.
CH712926B1 (en) 2007-04-12 2018-03-15 Hautlence Sa Clockwork movement comprising a regulating member mounted in a mobile frame.
CH700459A2 (en) 2009-02-24 2010-08-31 Montres Breguet Sa Timepiece, has chronograph comprising second and minute hands driven by gear train, and watch comprising minute and hour hands driven by another gear train, where gear trains are independent and driven using single energy source i.e. barrel
CH702294B1 (en) 2009-11-16 2014-05-30 Complitime Sa Movement timepiece.
EP2407832B1 (en) * 2010-07-16 2018-09-05 Richemont International S.A. Timepiece movement
CH704063B1 (en) * 2010-11-09 2013-07-31 Complitime Sa Timepiece
CH712973B1 (en) * 2016-09-23 2023-12-29 Bucherer Ag Tourbillon and watch with tourbillon.
CH719472B9 (en) * 2022-03-04 2024-09-30 Richemont Int Sa Tourbillon clock movement.

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO2013104634A1 (en) 2012-01-10 2013-07-18 Lvmh Swiss Manufactures Sa Watch movement comprising a tourbillon for a chronograph
WO2017084972A1 (en) 2015-11-17 2017-05-26 Complitime Sa Horology movement
EP3399374A1 (en) 2017-05-05 2018-11-07 Gfpi Sa Clockwork
WO2018202746A1 (en) 2017-05-05 2018-11-08 Gfpi S.A. Clock movement

Also Published As

Publication number Publication date
CH694833A5 (en) 2005-07-29
EP1706796B1 (en) 2007-06-13
DE602004007045D1 (en) 2007-07-26
WO2005043257A1 (en) 2005-05-12
DE602004007045T2 (en) 2008-02-14

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