EP2725433B1 - Flying pendulum with flying balance wheel for clockwork - Google Patents

Flying pendulum with flying balance wheel for clockwork Download PDF

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Publication number
EP2725433B1
EP2725433B1 EP20120190230 EP12190230A EP2725433B1 EP 2725433 B1 EP2725433 B1 EP 2725433B1 EP 20120190230 EP20120190230 EP 20120190230 EP 12190230 A EP12190230 A EP 12190230A EP 2725433 B1 EP2725433 B1 EP 2725433B1
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European Patent Office
Prior art keywords
cage
balance
tourbillon
integral
bearing
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EP20120190230
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German (de)
French (fr)
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EP2725433A1 (en
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Laurent Rougny
Michel Capt
Edouard Prost
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Richemont International SA
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Richemont International SA
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Priority to EP20120190230 priority Critical patent/EP2725433B1/en
Priority to CN201310498684.8A priority patent/CN103792827B/en
Publication of EP2725433A1 publication Critical patent/EP2725433A1/en
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    • 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

  • Components of an escapement in particular an escapement wheel 26 (comprising a wheel and a pinion in a known manner) and an anchor 28, are pivoted between the two bridges 20 and 22, by means of stones 30, in a known manner .
  • pins 50 and 52 respectively provide the rotational holding between, on the one hand, the lower bridge 20 and the hub 34 and, on the other hand, the hub 34 and the drive pinion 40.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Rolling Contact Bearings (AREA)

Description

Domaine techniqueTechnical area

La présente invention concerne un tourbillon, pour mouvement horloger, comportant une cage destinée à être montée rotative sur un élément de bâti du mouvement horloger par l'intermédiaire d'un roulement de cage, à billes ou à galets, la cage portant notamment un arbre de balancier, portant lui-même un balancier, ainsi qu'un échappement et un spiral.The present invention relates to a vortex, for watch movement, comprising a cage intended to be rotatably mounted on a frame member of the watch movement by means of a cage bearing, ball or roller, the cage including a shaft balance, carrying a balance wheel, as well as an escapement and a hairspring.

L'invention concerne également un mouvement horloger comportant un tel tourbillon ainsi qu'une pièce d'horlogerie munie d'un tel mouvement horloger.The invention also relates to a watch movement comprising such a tourbillon and a timepiece provided with such a watch movement.

Etat de la techniqueState of the art

De nombreuses constructions de tourbillons pour mouvements horlogers ont déjà été divulguées dans l'art antérieur, pour répondre à différents problèmes techniques posés au court du temps.Many tourbillon constructions for watch movements have already been disclosed in the prior art, to respond to various technical problems posed over time.

Ces tourbillons assemblés en porte-à-faux sur le mouvement horloger, au moyen d'un unique roulement à billes ou à galets, sont habituellement qualifiés de tourbillons volants. Ils présentent notamment l'avantage d'offrir une vue plus spectaculaire du fait qu'aucun pont n'est nécessaire, au-dessus du tourbillon, pour assurer le pivotement de la cage. Ainsi, seule la cage, dont le dessin peut être allégé et personnalisé, masque partiellement la vue du balancier-spiral et de l'échappement, ces organes formant le coeur battant de la pièce d'horlogerie.These vortices assembled cantilevered on the clock movement, by means of a single ball or roller bearing, are usually called flying vortices. They have the particular advantage of offering a more spectacular view of the fact that no bridge is needed, above the vortex, to ensure the pivoting of the cage. Thus, only the cage, whose design can be lightened and personalized, partially obscures the view of the sprung balance and the exhaust, these bodies forming the beating heart of the timepiece.

Le brevet US 7,744,271 B2 décrit un tel tourbillon. Plus précisément, ce document divulgue un tourbillon dont le roulement de cage présente une cage interne en forme de douille au travers de laquelle est agencé l'arbre de balancier. Le balancier est solidaire de son arbre, à proximité d'une première extrémité de ce dernier, tandis que la seconde extrémité de l'arbre porte le plateau coopérant avec l'échappement. Outre une meilleure répartition des masses de part et d'autre d'un pont de cage central, cet agencement permet également d'utiliser un arbre de balancier de longueur importante. En effet, ce brevet américain précise que cette dernière caractéristique permet de réduire les contraintes subies par les paliers de l'arbre de balancier, en référence à des tourbillons de l'art antérieur dont les arbres de balancier sont plus courts.The patent US 7,744,271 B2 describes such a vortex. More specifically, this document discloses a vortex whose cage bearing has an inner cage-shaped sleeve through which is arranged the balance shaft. The rocker is secured to its shaft, near a first end of the latter, while the second end of the shaft carries the plate cooperating with the exhaust. In addition to a better distribution of the masses on either side of a central cage bridge, this arrangement also makes it possible to use a balance shaft of considerable length. Indeed, this US patent states that this last feature reduces the stresses on the bearings of the balance shaft, with reference to vortices of the prior art whose balance shafts are shorter.

On notera que le tourbillon présenté dans ce document présente un encombrement similaire à ceux des tourbillons antérieurs suivant la direction de son épaisseur.It will be noted that the vortex presented in this document has a bulk similar to those of the previous vortices in the direction of its thickness.

Divulgation de l'inventionDisclosure of the invention

Un but principal de la présente invention est de proposer une alternative de réalisation aux tourbillons connus dans l'état de la technique, permettant notamment de construire un tourbillon d'épaisseur réduite, sans pour autant nuire à la précision des oscillations du balancier-spiral.A main object of the present invention is to propose an alternative embodiment to vortices known in the state of the art, allowing in particular to build a vortex of reduced thickness, without impairing the accuracy of oscillations of the sprung balance.

A cet effet, la présente invention concerne plus particulièrement un tourbillon du type mentionné plus haut, caractérisé par le fait que l'arbre de balancier est solidaire de la cage tandis que le balancier est monté pivotant en référence à l'arbre de balancier au moyen d'un roulement de balancier, à billes ou à galets.For this purpose, the present invention relates more particularly to a vortex of the type mentioned above, characterized in that the balance shaft is integral with the cage while the balance is pivotally mounted with reference to the balance shaft by means of of a balance wheel bearing, ball or roller.

Grâce à ces caractéristiques, les paliers inférieur et supérieur, habituellement utilisés pour assurer le pivotement de l'arbre de balancier, peuvent être supprimés et, par conséquent, la portion de la cage de tourbillon remplissant la fonction de pont de balancier, qui recouvre normalement le balancier-spiral, peut également être supprimée. De ce fait, le balancier-spiral et l'échappement sont plus facilement visibles que dans les tourbillons de l'art antérieur, et le tourbillon peut avoir une épaisseur très réduite.With these features, the lower and upper bearings, usually used to pivot the balance shaft, can be eliminated and, therefore, the portion of the tourbillon cage performing the balance bridge function, which normally covers the sprung balance, can also be removed. As a result, the sprung balance and the escapement are more easily visible than in the vortices of the prior art, and the vortex can have a very small thickness.

Selon un mode de réalisation préféré, le roulement de cage comprend une partie centrale et une partie externe dont l'une est solidaire de la cage et l'autre est destinée à être rendue solidaire du mouvement horloger, l'arbre de balancier étant assemblé directement à la partie du roulement de cage qui est solidaire de la cage.According to a preferred embodiment, the cage bearing comprises a central portion and an outer portion, one of which is integral with the cage and the other is intended to be secured to the watch movement, the balance shaft being assembled directly. to the part of the cage bearing that is secured to the cage.

De manière avantageuse, le roulement de cage comprend un moyeu solidaire de la cage et une bague externe destinée à être rendue solidaire du mouvement horloger, l'arbre de balancier étant alors solidaire du moyeu. De plus, l'arbre de balancier peut préférablement présenter un épaulement, contre lequel le moyeu est agencé en butée, et un filetage, ménagé à son extrémité située en regard de l'épaulement et, sur lequel est vissé un écrou de manière à rendre l'arbre de balancier et le moyeu solidaires l'un de l'autre.Advantageously, the cage bearing comprises a hub integral with the cage and an outer ring intended to be secured to the watch movement, the balance shaft then being secured to the hub. In addition, the balance shaft may preferably present a shoulder, against which the hub is arranged in abutment, and a thread, formed at its end located opposite the shoulder and on which is screwed a nut so as to make the balance shaft and the hub integral with the one of the other.

Un pignon d'entraînement de la cage est alors préférablement interposé entre le moyeu et l'écrou.A drive gear of the cage is then preferably interposed between the hub and the nut.

Selon des caractéristiques préférées de la présente invention, la cage de tourbillon comprend un pont inférieur, solidaire du moyeu, et un pont supérieur, solidaire du pont inférieur, l'échappement comprenant une ancre et une roue d'échappement agencées toutes deux de manière à pivoter entre les ponts inférieur et supérieur.According to preferred features of the present invention, the tourbillon cage comprises a lower bridge, integral with the hub, and an upper bridge, integral with the lower deck, the escapement comprising an anchor and an escape wheel both arranged so as to rotate between the lower and upper decks.

De manière générale, on peut prévoir que la cage comprend un pont inférieur, solidaire du moyeu et, présentant au moins une portion située à la périphérie du roulement de cage. Ainsi, la bague externe peut être munie d'une denture remplissant le rôle de roue fixe pour le tourbillon, la portion du pont inférieur située à la périphérie du roulement de cage portant une roue d'échappement dont le pignon est agencé en prise avec la roue fixe.In general, it can be provided that the cage comprises a lower bridge, integral with the hub and having at least one portion located at the periphery of the cage bearing. Thus, the outer ring may be provided with a set of teeth acting as a fixed wheel for the vortex, the portion of the lower deck located at the periphery of the cage bearing carrying an escape wheel whose pinion is arranged in engagement with the fixed wheel.

Par ailleurs, le roulement de balancier comprend avantageusement des cages interne et externe, le balancier étant solidaire de la cage externe, avec interposition d'un organe intermédiaire de forme sensiblement annulaire et, portant une cheville pour remplir la fonction de plateau en relation avec l'échappement.Furthermore, the balance wheel bearing advantageously comprises internal and external cages, the balance being secured to the outer cage, with the interposition of an intermediate member of substantially annular shape and, carrying an ankle to fulfill the plate function in relation to the 'exhaust.

Selon une variante de réalisation préférée, la cage interne comprend une portion de l'arbre de balancier, associée à une bague assemblée à ce dernier.According to a preferred embodiment, the inner cage comprises a portion of the balance shaft, associated with a ring assembled to the latter.

En outre, de manière générale, on peut prévoir que l'arbre de balancier porte une virole de fixation d'une première extrémité du spiral. Préférablement, le balancier porte un organe de fixation d'une seconde extrémité du spiral.In addition, in general, it can be provided that the balance shaft carries a ferrule fixing a first end of the spiral. Preferably, the balance carries a fixing member of a second end of the hairspring.

La présente invention concerne également un mouvement horloger comportant un tourbillon selon les caractéristiques ci-dessus, ainsi qu'une pièce d'horlogerie comportant une boîte fermée par au moins une glace et logeant un tel mouvement horloger, le tourbillon étant agencé de telle manière que le spiral est visible directement au travers de la glace, sans interposition d'un autre composant entre lui et la glace. Un tel mouvement horloger pourrait également comprendre un système de remontage automatique comportant une masse de forme annulaire disposée autour du mouvement sur sa périphérie. De cette manière, on obtient un mouvement automatique à tourbillon qui est extrêmement plat.The present invention also relates to a watch movement comprising a tourbillon according to the above characteristics, as well as a timepiece comprising a box closed by at least one mirror and housing such a watch movement, the vortex being arranged such that the spiral is visible directly through the ice, without interposition of another component between him and the ice. Such a watch movement could also include an automatic winding system comprising an annular mass arranged around the movement on its periphery. In this way, an automatic whirl motion is obtained that is extremely flat.

Grâce à de telles caractéristiques, on obtient une pièce d'horlogerie offrant une vue spectaculaire sur les composants principaux qui l'animent.Thanks to such characteristics, we obtain a timepiece offering a spectacular view of the main components that animate it.

Brève description des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement à la lecture de la description détaillée d'un mode de réalisation préféré qui suit, faite en référence aux dessins annexés donnés à titre d'exemples non limitatifs et dans lesquels:

  • les figures 1 et 2 représentent des vues en perspective simplifiées, depuis un côté et l'autre, d'un tourbillon selon un mode de réalisation préféré de l'invention, et
  • les figures 3, 4 et 5 représentent des vues en coupe transversale du tourbillon des figures 1 et 2, prises suivant trois plans de coupe respectifs différents.
Other features and advantages of the present invention will appear more clearly on reading the detailed description of a preferred embodiment which follows, made with reference to the accompanying drawings given by way of non-limiting examples and in which:
  • the Figures 1 and 2 represent simplified perspective views, from one side and the other, of a tourbillon according to a preferred embodiment of the invention, and
  • the Figures 3, 4 and 5 represent cross-sectional views of the whirlwind of Figures 1 and 2 , taken according to three different respective cutting planes.

Mode(s) de réalisation de l'inventionMode (s) of realization of the invention

Les figures 1 et 2 représentent des vues en perspective simplifiées, depuis un côté et l'autre, d'un tourbillon 1 selon un mode de réalisation préféré de l'invention. Ces vues permettent d'apprécier l'apparence générale du tourbillon 1 et plus particulièrement à quel point celle-ci est spectaculaire.The Figures 1 and 2 represent simplified perspective views, from one side and the other, of a vortex 1 according to a preferred embodiment of the invention. These views make it possible to appreciate the general appearance of tourbillon 1 and more particularly to what extent it is spectacular.

En effet, le tourbillon 1 comporte un ensemble balancier-spiral comprenant un spiral 2 surmontant un balancier 4, le spiral 2 étant situé sur le dessus du tourbillon 1, sans qu'aucun autre composant ne soit agencé au-dessus de lui. Par conséquent, si le tourbillon est agencé en regard d'une glace dans une pièce d'horlogerie, le spiral est intégralement visible, le balancier 4 n'étant quant à lui que partiellement masqué par le spiral 2.Indeed, the vortex 1 comprises a balance-spiral assembly comprising a spiral 2 surmounting a balance 4, the spiral 2 being located on top of the vortex 1, without any other component is arranged above him. Therefore, if the vortex is arranged opposite an ice in a timepiece, the spiral is fully visible, the balance 4 is only partially masked by the hairspring 2.

Le balancier 4 est porté par un arbre de balancier 6 agencé au centre du tourbillon 1. Il comporte deux bras 8 dont l'un porte un piton 10 de fixation de l'extrémité externe 12 du spiral 2. L'extrémité interne 14 du spiral 2 est quant à elle solidaire d'une virole 16 portée par l'arbre de balancier 6.The rocker 4 is carried by a balance shaft 6 arranged in the center of the vortex 1. It comprises two arms 8, one of which carries a pin 10 for fixing the outer end 12 of the spiral 2. The inner end 14 of the spiral 2 is secured to a ferrule 16 carried by the balance shaft 6.

Le tourbillon comporte en outre une cage 18 comprenant notamment des ponts inférieur 20 et supérieur 22, agencés sous le balancier 4. Les ponts sont reliés l'un à l'autre au moyen de piliers de cage 24, de manière conventionnelle.The vortex further comprises a cage 18 including lower bridges 20 and upper 22, arranged under the balance 4. The bridges are connected to each other by means of cage pillars 24, in a conventional manner.

Des composants d'un échappement, en particulier un mobile d'échappement 26 (comportant une roue et un pignon de manière connue) et une ancre 28, sont pivotés entre les deux ponts 20 et 22, au moyen de pierres 30, de manière connue.Components of an escapement, in particular an escapement wheel 26 (comprising a wheel and a pinion in a known manner) and an anchor 28, are pivoted between the two bridges 20 and 22, by means of stones 30, in a known manner .

La figure 2 illustre plus particulièrement comment le tourbillon 1 peut être assemblé au bâti d'un mouvement horloger (non représenté) et comment les oscillations du balancier-spiral peuvent être entretenues.The figure 2 illustrates more particularly how the vortex 1 can be assembled to the frame of a clockwork movement (not shown) and how the oscillations of the sprung balance can be maintained.

A cet effet, le tourbillon 1 comporte un roulement de cage 32 de type conventionnel, à billes ou à galets. Le roulement de cage 32 comprend un moyeu 34 solidaire de la cage 18 (comme cela ressortira plus clairement de la description détaillée des figures 3 à 5) ainsi qu'une bague externe 36, destinée à être rendue solidaire d'un élément de bâti du mouvement horloger, en principe au moyen de vis (non représentées),For this purpose, the vortex 1 comprises a rolling cage 32 of conventional type, ball or roller. The cage bearing 32 comprises a hub 34 integral with the cage 18 (as will become more clearly apparent from the detailed description of the Figures 3 to 5 ) and an outer ring 36, intended to be secured to a frame member of the watch movement, in principle by means of screws (not shown),

Un écrou 38 est solidaire du moyeu 34, d'une manière qui sera décrite ultérieurement, et assure en même temps le serrage d'un pignon d'entraînement 40 de la cage 18. Le pignon d'entraînement 40 est destiné à engrener avec un mobile du rouage de finissage du mouvement horloger, de manière connue.A nut 38 is integral with the hub 34, in a manner to be described later, and at the same time ensures the tightening of a drive pinion 40 of the cage 18. The drive pinion 40 is intended to mesh with a mobile of the finishing gear of the watch movement, in known manner.

La bague externe 36 présente une denture périphérique 42 lui permettant de remplir le rôle de roue fixe. En effet, le pont inférieur 20 présente une forme telle que sa portion portant le mobile d'échappement 26 est située à la périphérie du roulement de cage 32. De ce fait, le pignon d'échappement engrène avec la denture 42 de la bague externe 36, de manière à entraîner toute la cage 18 en rotation, de manière conventionnelle.The outer ring 36 has a peripheral toothing 42 enabling it to fulfill the role of fixed wheel. Indeed, the lower bridge 20 has a shape such that its portion carrying the escapement wheel 26 is located at the periphery of the cage bearing 32. As a result, the exhaust pinion meshes with the toothing 42 of the outer ring 36, so as to drive all the cage 18 in rotation, in a conventional manner.

Les figures 3, 4 et 5 représentent des vues en coupe transversale du tourbillon 1, prises suivant trois plans de coupe respectifs différents, à savoir un premier passant par le mobile d'échappement 26, un second passant par un pilier 24 de la cage 18 et, le troisième passant par l'ancre 28. Ces figures permettent de mieux apprécier certains détails de construction.The Figures 3, 4 and 5 represent cross-sectional views of the vortex 1, taken in three different respective sectional planes, namely a first passing through the escapement mobile 26, a second passing through a pillar 24 of the cage 18 and the third passing through the anchor 28. These figures make it possible to better appreciate certain details of construction.

Plus particulièrement, il apparaît que l'arbre de balancier 6 présente un épaulement 44, agencé en butée contre le moyeu 34, et comporte un filetage à son extrémité inférieure 46 coopérant avec l'écrou 38, de telle manière que le pignon d'entraînement 40 est serré entre l'écrou 38 et le moyeu 34. Dans le même temps, l'écrou 38 assure le serrage du moyeu 34 contre l'arbre de balancier 6 et rend ainsi ce dernier solidaire de la cage 18.More particularly, it appears that the rocker shaft 6 has a shoulder 44, arranged in abutment against the hub 34, and has a thread at its lower end 46 cooperating with the nut 38, so that the drive pinion 40 is clamped between the nut 38 and the hub 34. At the same time, the nut 38 clamps the hub 34 against the balance shaft 6 and thus makes the latter integral with the cage 18.

On notera également que le moyeu 34 est réalisé en deux parties, avec une bague 48 chassée sur une portion principale afin de permettre l'insertion des billes dans le roulement de cage lorsque la bague externe 36 est agencée en regard du moyeu 34.Note also that the hub 34 is made in two parts, with a ring 48 driven on a main portion to allow insertion of the balls into the cage bearing when the outer ring 36 is arranged opposite the hub 34.

En outre, des goupilles 50 et 52 assurent respectivement la tenue en rotation entre, d'une part, le pont inférieur 20 et le moyeu 34 et, d'autre part, le moyeu 34 et le pignon d'entraînement 40.In addition, pins 50 and 52 respectively provide the rotational holding between, on the one hand, the lower bridge 20 and the hub 34 and, on the other hand, the hub 34 and the drive pinion 40.

Par ailleurs, il ressort des figures 3 à 5 que le balancier 4 est monté rotatif sur l'arbre de balancier 6 au moyen d'un roulement de balancier 54, à billes, avec interposition d'un organe intermédiaire 56, de forme sensiblement annulaire, et portant une cheville pour remplir la fonction de plateau en relation avec un dard 58 (visible uniquement sur la figure 5) de l'ancre 28.Moreover, it appears Figures 3 to 5 that the rocker 4 is rotatably mounted on the rocker shaft 6 by means of a ball bearing 54, with balls, with the interposition of an intermediate member 56, of substantially annular shape, and carrying an ankle to fulfill the function of plateau in relation to a dart 58 (visible only on the figure 5 ) of the anchor 28.

Le roulement de balancier 54 comprend une cage interne dont la fonction est assurée ici directement par l'arbre de balancier 6. Ce dernier présente une bague 60 réalisée d'une pièce avec l'arbre, tandis qu'une seconde bague 62, rapportée, est chassée sur l'arbre de balancier 6 pour emprisonner les billes, après qu'une cage externe 64 ait été agencée en regard de la cage interne.The rocker bearing 54 comprises an internal cage whose function is provided here directly by the balance shaft 6. The latter has a ring 60 made in one piece with the shaft, while a second ring 62, reported, is driven on the balance shaft 6 to trap the balls, after an outer cage 64 has been arranged opposite the inner cage.

Grâce à ces caractéristiques structurelles et d'assemblage, on obtient un ensemble dont le nombre de composants est réduit, entraînant une masse réduite pour le tourbillon selon la présente invention. En outre, cette structure permet d'obtenir un ensemble plus compact et beaucoup moins épais qu'avec les constructions de l'art antérieur.By virtue of these structural and assembly features, an assembly is obtained whose number of components is reduced, resulting in a reduced mass for the tourbillon according to the present invention. In addition, this structure makes it possible to obtain a more compact and much thinner assembly than with the constructions of the prior art.

Comme déjà mentionné plus haut, selon cette forme d'exécution, une première extrémité du spiral est solidaire de l'arbre de balancier tandis que sa seconde extrémité est solidaire du balancier lui-même, à titre de variante de réalisation préférée mais non limitative. Cette caractéristique particulière permet de se passer d'un pont pour assurer le maintien de l'extrémité externe du spiral et permet par conséquent d'accentuer l'apparence spectaculaire offerte par le tourbillon selon la présente invention.As already mentioned above, according to this embodiment, a first end of the balance spring is integral with the balance shaft while its second end is integral with the balance itself, as a preferred but non-limiting embodiment. This particular feature makes it possible to dispense with a bridge to ensure the maintenance of the outer end of the spiral and therefore allows to accentuate the spectacular appearance offered by the tourbillon according to the present invention.

En effet, si le tourbillon 1 est agencé en regard d'une glace de pièce d'horlogerie, il est ainsi possible de le rendre apparent sans qu'aucun autre composant du mouvement horloger correspondant ne soit positionné entre le spiral et la glace.Indeed, if the vortex 1 is arranged next to a timepiece glass, it is thus possible to make it apparent without any other component of the corresponding watch movement is positioned between the hairspring and the ice.

La description qui précède s'attache à décrire un mode de réalisation particulier à titre d'illustration non limitative et, l'invention n'est pas limitée à la mise en oeuvre de certaines caractéristiques particulières qui viennent d'être décrites, comme par exemple le mode de fixation des extrémités du spiral ou encore la forme des ponts 20 et 22 de la cage de tourbillon. En effet, on peut prévoir que le pont supérieur présente une portion agencée à proximité du spiral pour y assurer l'ancrage de l'une de ses extrémités, sans sortir du cadre de la présente invention. Dans une autre variante, le pont inférieur 20 et/ou le pont supérieur 22 peuvent être monoblocs avec le moyeu 34 du roulement de cage 32. De manière similaire, le mode de fixation de l'arbre de balancier au moyeu du roulement de cage peut être modifié sans sortir du cadre de la présente invention. On peut par exemple prévoir que l'arbre de balancier comporte un filetage supplémentaire destiné à coopérer avec un taraudage ménagé dans le moyeu, pour assurer une liaison par vissage entre eux.The foregoing description attempts to describe a particular embodiment by way of non-limiting illustration and the invention is not limited to the implementation of certain particular features which have just been described, for example the method of fixing the ends of the spiral or the shape of the bridges 20 and 22 of the tourbillon cage. Indeed, it can be provided that the upper bridge has a portion arranged near the hairspring to ensure the anchoring of one of its ends, without departing from the scope of the present invention. In another variant, the lower bridge 20 and / or the upper bridge 22 may be one-piece with the hub 34 of the cage bearing 32. Similarly, the method of attachment of the rocker shaft to the hub of the cage bearing can be modified without departing from the scope of the present invention. One can for example provide that the balance shaft comprises an additional thread intended to cooperate with a tapped hole in the hub, to ensure a connection by screwing them.

L'homme du métier ne rencontrera pas de difficulté particulière pour adapter le contenu de la présente divulgation à ses propres besoins et mettre en oeuvre un tourbillon comportant une cage et un arbre de balancier solidaire de cette dernière, le balancier étant monté rotatif sur l'arbre de balancier au moyen d'un roulement de balancier, à billes ou à galets, sans sortir du cadre de la présente invention.Those skilled in the art will not encounter any particular difficulty in adapting the content of the present disclosure to their own needs and implement a vortex comprising a cage and a balance shaft integral with the latter, the balance being rotatably mounted on the balancer shaft by means of a balance wheel bearing, ball or roller, without departing from the scope of the present invention.

Ainsi, il est également possible, à titre d'exemple non limitatif, de prévoir que la partie externe du roulement de cage est solidaire de la cage, tandis que sa partie centrale est destinée à être rendue solidaire du mouvement horloger. Dans ce cas, le mouvement pourra comporter une couronne à denture interne pour engrener avec le pignon du mobile d'échappement, tandis que le pignon d'entraînement de la cage sera solidaire de la partie externe du roulement de cage. Le terme « tourbillon » doit également être pris dans un sens large qui englobe un mécanisme carrousel car, par exemple, les parties fixes 36 et 42 pourraient être solidaires d'une roue mobile entrainée par le rouage de finissage.Thus, it is also possible, by way of non-limiting example, to provide that the outer portion of the cage bearing is integral with the cage, while its central portion is intended to be secured to the watch movement. In this case, the movement may include a ring gear internally to mesh with the pinion of the exhaust mobile, while the drive gear of the cage will be secured to the outer portion of the cage bearing. The term "vortex" must also be taken in a broad sense that includes a carousel mechanism because, for example, the fixed parts 36 and 42 could be integral with a mobile wheel driven by the finishing train.

Avantageusement, un tourbillon selon l'invention peut être utilisé en combinaison avec un système de remontage automatique du barillet du mouvement dont la masse a une forme annulaire et est disposée autour de la périphérie du mouvement ce qui résulte en un mouvement à tourbillon automatique qui est extrêmement plat.Advantageously, a vortex according to the invention may be used in combination with an automatic winding system of the movement barrel whose mass has an annular shape and is arranged around the periphery of the movement which results in an automatic vortex movement which is extremely flat.

Claims (15)

  1. Tourbillon (1) for a horological movement, comprising a cage (18) which is designed to be fitted such as to rotate on a frame element of the horological movement, by means of a cage bearing (32), said cage (18) bearing in particular a balance shaft (6) which itself bears a balance (4), as well as an escapement (26, 28) and a balance spring (2), characterized in that said balance shaft (6) is integral with said cage (18), whereas said balance (4) is fitted such as to pivot with reference to said balance shaft (6) by means of a balance bearing (54).
  2. Tourbillon (1) according to Claim 1, said cage bearing (32) comprising a central part (34, 48) and an outer part (36), one of which is integral with said cage (18), and the other one of which is designed to be rendered integral with the horological movement, characterized in that said balance shaft (6) is assembled directly on the part of the said cage bearing (32) which is integral with said cage (18).
  3. Tourbillon (1) according to Claim 1 or 2, said cage bearing (32) comprising a hub (34, 38) which is integral with the said cage (18), and an outer ring (36) which is designed to be rendered integral with the horological movement, characterized in that said balance shaft (6) is integral with said hub (34, 48).
  4. Tourbillon (1) according to Claim 3, characterized in that said balance shaft (6) has:
    a shoulder (44) against which said hub (34) is designed to abut; and
    a thread which is provided at its end (46) situated opposite said shoulder (44), and on which a nut (38) is screwed such as to render said balance shaft (6) and said hub (34) integral with one another.
  5. Tourbillon (1) according to Claim 4, characterized in that a pinion (40) to drive said cage (18) is interposed between said hub (34) and said nut (38).
  6. Tourbillon (1) according to any one of Claims 3 to 5, characterized in that said cage (18) comprises a lower bridge (20) which is integral with said hub (34), and an upper bridge (22) which is integral with said lower bridge (20), said escapement comprising an anchor (28) and an escapement wheel (26) which are both placed such as to pivot between said upper and lower bridges (20, 22).
  7. Tourbillon (1) according to any one of Claims 3 to 5, characterized in that said cage (18) comprises a lower bridge (20) which is integral with said hub (34), and has at least a portion which is situated on the periphery of said cage bearing (32).
  8. Tourbillon (1) according to Claim 7, characterized in that said outer ring (36) comprises a toothing which plays the role of a fixed wheel for the tourbillon (1), said portion of said lower bridge (20) bearing an escapement wheel (26) the pinion of which is placed such as to be engaged with said fixed wheel.
  9. Tourbillon (1) according to any one of the preceding claims, said balance bearing (54) comprising inner (6, 60, 62) and outer (64) cages, said balance (4) being integral with said outer cage (64), with interposition of an intermediate unit (56) with a substantially annular form, and bearing a pin to act as a plate in relation with said escapement (26, 28).
  10. Tourbillon (1) according to Claim 9, characterized in that said inner cage (6, 60, 62) comprises a portion of said balance shaft (6, 60) which is associated with a ring (62) assembled with the latter.
  11. Tourbillon (1) according to any one of the preceding claims, characterized in that said balance shaft (6) bears a collet (16) for securing of a first end (14) of said balance spring (2).
  12. Tourbillon (1) according to Claim 11, characterized in that said balance (4) bears a unit (10) for securing of a second end (12) of said balance spring (2).
  13. Horological movement comprising a tourbillon (1) according to any one of Claims 1 to 12.
  14. Horological movement according to Claim 13, comprising a source of mechanical energy associated with an automatic winding system, characterized in that said automatic winding system comprises a mobile mass with an annular form and is arranged on the periphery of the horological movement.
  15. Horology piece comprising a case which is closed by at least one glass, and accommodates a horological movement according to Claim 13 or 14, characterized in that said tourbillon (1) is placed such that said balance spring (2) is visible directly through said glass, without interposition of another component between the balance spring and said glass.
EP20120190230 2012-10-26 2012-10-26 Flying pendulum with flying balance wheel for clockwork Active EP2725433B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20120190230 EP2725433B1 (en) 2012-10-26 2012-10-26 Flying pendulum with flying balance wheel for clockwork
CN201310498684.8A CN103792827B (en) 2012-10-26 2013-10-22 The flight top flywheel with flight escapement for watch and clock movement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120190230 EP2725433B1 (en) 2012-10-26 2012-10-26 Flying pendulum with flying balance wheel for clockwork

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EP2725433A1 EP2725433A1 (en) 2014-04-30
EP2725433B1 true EP2725433B1 (en) 2015-04-29

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI743189B (en) * 2016-09-23 2021-10-21 瑞士商寶齊萊公司 Tourbillon and watch with tourbillon

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2990883A1 (en) * 2014-08-29 2016-03-02 Nivarox-FAR S.A. Clockwork balance wheel-hairspring assembly
EP3029530B1 (en) * 2014-12-03 2019-08-14 Nivarox-FAR S.A. Tourbillon mechanism
CH712756B1 (en) * 2016-07-29 2020-04-30 Richemont Int Sa Self-winding watch movement.
WO2021063953A1 (en) * 2019-09-30 2021-04-08 Gfpi Sa Timepiece movement
EP4194961A1 (en) 2021-12-07 2023-06-14 H.K. Precision Technology Co. Ltd Regulator assembly, for timepiece movement, comprising a cage to be rotatably mounted on a ball bearing

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7744271B2 (en) 2003-05-02 2010-06-29 Watch-U Licence Ag Double sided tourbillon
CH697781B1 (en) * 2004-02-13 2009-02-13 Gfpi S A timepiece provided with a tourbillon.
CH700862A1 (en) * 2009-04-29 2010-10-29 Richemont Int Sa Tourbillon without the weight of the pendulum.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI743189B (en) * 2016-09-23 2021-10-21 瑞士商寶齊萊公司 Tourbillon and watch with tourbillon

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EP2725433A1 (en) 2014-04-30
CN103792827B (en) 2018-04-03
CN103792827A (en) 2014-05-14

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