EP2502118B1 - Timepiece movement - Google Patents

Timepiece movement Download PDF

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Publication number
EP2502118B1
EP2502118B1 EP10781647.2A EP10781647A EP2502118B1 EP 2502118 B1 EP2502118 B1 EP 2502118B1 EP 10781647 A EP10781647 A EP 10781647A EP 2502118 B1 EP2502118 B1 EP 2502118B1
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EP
European Patent Office
Prior art keywords
differential
movement
balances
rockers
barrel
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EP10781647.2A
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German (de)
French (fr)
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EP2502118A1 (en
Inventor
Stephen Forsey
Robert Greubel
Laurent Perret
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Complitime SA
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Complitime SA
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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
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • 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
    • 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 a timepiece of the type comprising an energy source, a time base provided with several rockers, means for connecting the energy source to the time base, and mobile arranged to wear time display means.
  • An object of the present invention is to provide a movement for a timepiece whose sensitivity to changes in position is particularly low.
  • the present invention relates to a movement for a timepiece comprising a source of energy, a time base, means for connecting the energy source to the time base, and mobiles arranged to carry the time display means.
  • said time base is formed of several rockers pivoting about their respective pivot axis, and oriented so that planes perpendicular to their pivot axes define a regular polyhedron.
  • the regular polyhedron is defined by one or more planes parallel to each other and perpendicular to the balance axes.
  • said time base comprises four rockers and said polyhedron is a regular tetrahedron. In this case, only four planes perpendicular to the balance axes are required to define the tetrahedron.
  • said time base comprises three pendulums and said polyhedron is a cube. In this case, it takes three times two planes parallel to each other and two to two perpendicular to one of the balance axes to define the cube.
  • the energy source comprises at least one barrel per balance.
  • said barrel is connected to the balance by a gear train.
  • This movement comprises, in addition, a differential type structure connecting each of the gear trains to said mobiles.
  • the movement further comprises a differential type structure and the energy source comprises at least one barrel kinematically connected to said mobiles and rockers by said differential type structure.
  • time display means rotate about an axis forming a non-right angle with the rocker axes. In this way, the thickness of the movement can be maintained at a reasonable value.
  • the clockwork movement 10 represented very schematically in the figure 1 has a truncated pyramid shape which, in the absence of truncation, would comprise four equilateral triangular-shaped faces, thus constituting a regular tetrahedron.
  • the movement 10 is provided with four sets A, B, C and D shown diagrammatically by two circles, respectively illustrating a cylinder 12 and a rocker 16, connected to each other by a line, illustrating a work train 14. each of these sets, including in particular the rockers 16, are respectively perpendicular to one of the faces of the tetrahedron.
  • the movement 10 also carries, on mobiles such as a roadway and a gun wheel not shown in the drawing, time display means formed by needles 18 visible on the figure 1 .
  • this structure 20 comprises two spherical differential gears 22 and 24, each comprising two wheels forming entries identified respectively by the letters a and b , a satellite c , and a tree d , the letters being preceded by the reference of the differential gearing corresponding.
  • the wheels a and b of the two spherical differentials 22 and 24 are each connected kinematically to one of the Systems A, B, C and D.
  • Each satellite c is connected to the corresponding shaft on which also the wheels pivot a and b. These meshes with the satellite c .
  • a third spherical differential gear 26 also includes two wheels forming inputs 26a and 26b, a satellite 26c and a shaft 26d.
  • the wheels 26a and 26b are respectively connected to pinions e integral with the shafts of spherical differentials 22 and 24.
  • the two inputs 26a and 26b of the differential 26 mesh with the planet 26c which rotates the shaft 26d.
  • the rotational movement of the shaft 26d of the differential 26 corresponds to the sum of the rotational movements of the inputs a and b of the differentials 22 and 24, which are a function of the frequency of the rockers 16 of the four sets A, B , C and D.
  • the watch movement 30 represented very schematically in the figure 2 has a truncated pyramid shape with two equilateral triangular bases and three trapezoidal sides which, in the absence of truncation, would form three isosceles right triangles.
  • This pyramid forms a part of a cube whose three faces are formed of a square obtained by the addition of a second right triangle adjacent to the three right triangles.
  • the movement 30 is provided with three sets E, F and G diagrammatically represented by two circles, respectively illustrating the barrel 12 and the rocker 16, and a line illustrating the finishing gear 14.
  • the axes of the mobiles of each of these sets, including the rockers 16, are respectively perpendicular to one of the faces of the cube.
  • the movement 30 also carries on mobile devices such as a roadway and a gun wheel not shown in the drawing, time display means formed by needles 18 visible on the figure 2 .
  • the movement 30 is provided with a differential type structure 32 (cf. Figure 4 ) kinematically connected to each of the barrels 12. More precisely, with reference to the figure 4 this structure 32 comprises two spherical differential gears 34 and 36.
  • the differential gear 34 comprises two wheels forming inputs 34a, 34b, a satellite 34c and a shaft 34d.
  • the wheels 34a and 34b are respectively kinematically connected to the barrels 12 of the sets E and F.
  • the satellite 34c is connected to the shaft 34d on which the two wheels 34a and 34b also pivot. The latter meshes with the satellite 34c.
  • a second spherical differential gear 36 also includes two wheels forming inputs 36a and 36b, a satellite 36c and a shaft 36d.
  • the input 36a of the differential gear 36 is kinematically connected to the shaft 34d of the differential gear 34 by means of a gear 34e integral with said shaft 34d, while the input 36b is kinematically connected to the barrel 12 of the gear 34. assembly G.
  • the wheels 36a, 36b mesh with the satellite 36c, which rotates the shaft 36d of the differential gear 36.
  • the movement of the shaft 36d of the differential 36 is therefore a combination of the movements applied to the inputs 34a and 34b of the differential 34 and the input 36a of the differential 36. In this case, however, the structure of the differential gears is not symmetrical.
  • the rotational movement of the shaft 36d of the differential 36 corresponds to the sum of the rotational movements of the inputs 34a and 34b of the differentials 34 and 36a of the differential 36, which are functions of the frequency of the rockers 16 of the three sets E, F and G.
  • the shaft 36d of the differential 36 by a pinion 36e to a timer gear 37, it is possible to display the time corresponding to the average frequency of the rockers of each of the sets E, F and G.
  • the three rockers are inclined relative to the plane of movement, and relative to the axis of the display means. Since the rockers do not form a right angle with the display means, the thickness of the movement can be kept within reasonable limits.
  • the differential gears 34 and 36 can also be arranged to be concentric, equipped with a single shaft 36d.
  • Such a configuration is represented on the figure 5 , the elements identical to the realization of the figure 4 are repeated with the same references.
  • the wheels 34a and 34b are respectively kinematically connected to the barrels 12 of the sets E and F, while the wheel 36b is connected to the barrel 12 of the assembly G.
  • the satellite 34c is secured to a shaft 38 pivotally mounted on the shaft 36d, the shaft 38 is also integral in rotation with the wheel 36a.
  • the wheels 36a and 36b meshing with the satellite 36c, which rotates the shaft 36d, the axis of the satellite 36c being fixed on the shaft 36d.
  • the speed of rotation of the shaft 36d is a function of the rotational speeds of the barrels 12 of the three sets E, F and G, these speeds being defined by the frequencies of the rockers 16 of the same sets.
  • each balance is powered by a barrel of its own. It is also possible to have only one barrel, and a tree structure, the barrel forming the trunk, while the differential structures 20 or 32 allow the existence of four, respectively three branches, each leading to the power supply. a pendulum.
  • the regular polyhedra considered is a tetrahedron and a cube. It is obvious that the effect obtained could be the same with a polyhedron with more sides. The complexity of the mechanism and the volume occupied, however, would be significantly increased, for a modest improvement in accuracy.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Toys (AREA)
  • Transmission Devices (AREA)
  • Electromechanical Clocks (AREA)

Description

Domaine techniqueTechnical area

La présente invention se rapporte aux mouvements pour pièce d'horlogerie du type comportant une source d'énergie, une base de temps munie de plusieurs balanciers, des moyens de liaison de la source d'énergie à la base de temps, et des mobiles agencés pour porter des moyens d'affichage du temps.The present invention relates to movements for a timepiece of the type comprising an energy source, a time base provided with several rockers, means for connecting the energy source to the time base, and mobile arranged to wear time display means.

Etat de la techniqueState of the art

Le fait de munir le mouvement de plusieurs balanciers permet d'améliorer la précision de la montre. Certaines pièces, par exemple celle décrite dans le brevet CH 156801 comportent deux balanciers disposés dans un même plan. Une telle solution permet de réduire les écarts de marche entre les différentes positions de la montre, de manière modeste toutefois. Une autre solution consiste à munir la montre d'un tourbillon. Pour réduire encore plus la sensibilité aux positions, certaines montres sont munies de deux tourbillons dont les axes des balanciers ne sont pas parallèles. Une solution de ce type est décrite dans la demande de brevet WO 2005/043257 . Les mouvements équipant de telles montres sont d'une grande complexité. Par ailleurs, le volume occupé par les cages des tourbillons, ainsi que l'énergie consommée sont importants. La demande de brevet WO 2008/101802 décrit, dans une variante, une montre munie de deux balanciers inclinés. Une telle solution ne permet d'avoir qu'une compensation partielle, l'inclinaison moyenne des balanciers par rapport à un plan de référence ne pouvant qu'être variable en fonction de la position de la montre dans l'espace.Providing the movement of several rockers improves the accuracy of the watch. Certain parts, for example that described in the patent CH 156801 have two rockers arranged in the same plane. Such a solution makes it possible to reduce the differences in operation between the different positions of the watch, however modestly. Another solution is to provide the watch with a tourbillon. To further reduce sensitivity to positions, some watches are equipped with two vortices whose axes of the pendulums are not parallel. A solution of this type is described in the patent application WO 2005/043257 . The movements equipping such watches are of a great complexity. Moreover, the volume occupied by the vortex cages, as well as the energy consumed are important. The patent application WO 2008/101802 describes, in a variant, a watch provided with two inclined pendulums. Such a solution allows only partial compensation, the average inclination of the rockers relative to a reference plane can only be variable depending on the position of the watch in space.

Un but de la présente invention est de proposer un mouvement pour pièce d'horlogerie dont la sensibilité aux changements de position est particulièrement faible.An object of the present invention is to provide a movement for a timepiece whose sensitivity to changes in position is particularly low.

Divulgation de l'inventionDisclosure of the invention

A cet effet, la présente invention concerne un mouvement pour pièce d'horlogerie comportant une source d'énergie, une base de temps, des moyens de liaison de la source d'énergie à la base de temps, et des mobiles agencés pour porter des moyens d'affichage du temps. Selon l'invention, ladite base de temps est formée de plusieurs balanciers pivotant autour de leur axe de pivotement respectif, et orientés de manière à ce que des plans perpendiculaires à leurs axes de pivotement définissent un polyèdre régulier.For this purpose, the present invention relates to a movement for a timepiece comprising a source of energy, a time base, means for connecting the energy source to the time base, and mobiles arranged to carry the time display means. According to the invention, said time base is formed of several rockers pivoting about their respective pivot axis, and oriented so that planes perpendicular to their pivot axes define a regular polyhedron.

De la sorte, quelle que soit la position du mouvement d'horlogerie, la position moyenne des axes des balanciers est constante. Le polyèdre régulier permet d'avoir une compensation complète des positions du mouvement.In this way, whatever the position of the watch movement, the average position of the axes of the rockers is constant. The regular polyhedron allows to have a complete compensation of the positions of the movement.

Le polyèdre régulier est défini par un ou plusieurs plans parallèles entre eux et perpendiculaires aux axes de balancier.The regular polyhedron is defined by one or more planes parallel to each other and perpendicular to the balance axes.

Dans une première variante, ladite base de temps comprend quatre balanciers et ledit polyèdre est un tétraèdre régulier. Dans ce cas, il suffit de quatre plans perpendiculaires aux axes de balancier pour définir le tétraèdre.In a first variant, said time base comprises four rockers and said polyhedron is a regular tetrahedron. In this case, only four planes perpendicular to the balance axes are required to define the tetrahedron.

Dans une deuxième variante, ladite base de temps comprend trois balanciers et ledit polyèdre est un cube. Dans ce cas, il faut trois fois deux plans parallèles entre eux et deux à deux perpendiculaires à un des axes de balancier pour définir le cube.In a second variant, said time base comprises three pendulums and said polyhedron is a cube. In this case, it takes three times two planes parallel to each other and two to two perpendicular to one of the balance axes to define the cube.

Dans un premier mode de réalisation, la source d'énergie comprend au moins un barillet par balancier. De plus ledit barillet est relié au balancier par un train d'engrenages. Ce mouvement comporte, en outre, une structure de type différentiel reliant chacun des trains d'engrenages auxdits mobiles.In a first embodiment, the energy source comprises at least one barrel per balance. In addition, said barrel is connected to the balance by a gear train. This movement comprises, in addition, a differential type structure connecting each of the gear trains to said mobiles.

Dans un deuxième mode de réalisation, le mouvement comporte, en outre, une structure de type différentiel et la source d'énergie comprend au moins un barillet relié cinématiquement auxdits mobiles et aux balanciers par ladite structure de type différentiel.In a second embodiment, the movement further comprises a differential type structure and the energy source comprises at least one barrel kinematically connected to said mobiles and rockers by said differential type structure.

Il est avantageux que les moyens d'affichage du temps tournent autour d'un axe faisant un angle non droit avec les axes de balanciers. De la sorte, l'épaisseur du mouvement peut être maintenue à une valeur raisonnable. Brève description des dessinsIt is advantageous that the time display means rotate about an axis forming a non-right angle with the rocker axes. In this way, the thickness of the movement can be maintained at a reasonable value. Brief description of the drawings

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée à titre d'exemple et faite en référence aux dessins dans lesquels :

  • les figures 1 et 2 représentent de manière schématique la structure générale des variantes dans lesquelles le mouvement est équipé respectivement de quatre et de trois balanciers ;
  • les figures 3 et 4 montrent, de manière schématique des systèmes de type différentiel équipant respectivement les mouvements illustrés aux figures 1 et 2 ;
  • la figure 5 est une variante de réalisation du système différentiel de la figure 4 ; et
  • la figure 6 illustre un engrenage susceptible de permettre un changement de plan de travail d'un train d'engrenages.
The invention will be better understood on reading the description which follows, given by way of example and with reference to the drawings in which:
  • the figures 1 and 2 schematically represent the general structure of the variants in which the movement is equipped respectively with four and three rockers;
  • the figures 3 and 4 schematically show differential-type systems equipping respectively the movements illustrated in FIGS. figures 1 and 2 ;
  • the figure 5 is an alternative embodiment of the differential system of the figure 4 ; and
  • the figure 6 illustrates a gear that can change the work plan of a gear train.

Modes de réalisation de l'inventionEmbodiments of the invention

Le mouvement d'horlogerie 10 représenté de manière très schématique à la figure 1 présente une forme de pyramide tronquée qui, en l'absence de troncature, comprendrait quatre faces de forme triangulaire équilatérale, constituant ainsi un tétraèdre régulier. Le mouvement 10 est muni de quatre ensembles A, B, C et D représentés schématiquement par deux cercles, illustrant respectivement un barillet 12 et un balancier 16, reliés entre eux par un trait, illustrant un rouage de finissage 14. Les axes des mobiles de chacun de ces ensembles, comprenant notamment les balanciers 16, sont respectivement perpendiculaires à l'une des faces du tétraèdre.The clockwork movement 10 represented very schematically in the figure 1 has a truncated pyramid shape which, in the absence of truncation, would comprise four equilateral triangular-shaped faces, thus constituting a regular tetrahedron. The movement 10 is provided with four sets A, B, C and D shown diagrammatically by two circles, respectively illustrating a cylinder 12 and a rocker 16, connected to each other by a line, illustrating a work train 14. each of these sets, including in particular the rockers 16, are respectively perpendicular to one of the faces of the tetrahedron.

Le mouvement 10 porte, en outre, sur de mobiles tels qu'une chaussée et une roue à canon non représentés au dessin, des moyens d'affichage du temps formés par des aiguilles 18 visibles sur la figure 1.The movement 10 also carries, on mobiles such as a roadway and a gun wheel not shown in the drawing, time display means formed by needles 18 visible on the figure 1 .

Pour que le temps affiché corresponde à la moyenne des temps mesurés par les quatre balanciers 16, le mouvement 10 est muni d'une structure de type différentiel 20 (cf. Figure 3) reliée cinématiquement à chacun des barillets 12. Plus précisément, en référence à la figure 3, cette structure 20 comprend deux engrenages différentiels sphériques 22 et 24, chacun comportant deux roues formant des entrées identifiées respectivement par les lettres a et b, un satellite c, et un arbre d, les lettres étant précédées de la référence de l'engrenage différentiel correspondant. Les roues a et b des deux différentiels sphériques 22 et 24 sont chacune reliées cinématiquement à l'un des systèmes A, B, C et D. Chacun des satellites c est relié à l'arbre d correspondant sur lequel pivotent aussi les roues a et b. Ces dernières engrènent avec le satellite c.In order for the displayed time to correspond to the average of the times measured by the four rockers 16, the movement 10 is provided with a differential-type structure 20 (cf. Figure 3 ) kinematically connected to each of the barrels 12. More precisely, with reference to the figure 3 this structure 20 comprises two spherical differential gears 22 and 24, each comprising two wheels forming entries identified respectively by the letters a and b , a satellite c , and a tree d , the letters being preceded by the reference of the differential gearing corresponding. The wheels a and b of the two spherical differentials 22 and 24 are each connected kinematically to one of the Systems A, B, C and D. Each satellite c is connected to the corresponding shaft on which also the wheels pivot a and b. These meshes with the satellite c .

Un troisième engrenage différentiel sphérique 26 comprend également deux roues formant des entrées 26a et 26b, un satellite 26c et un arbre 26d. Les roues 26a et 26b sont respectivement reliées à des pignons e solidaires des arbres d des différentiels sphériques 22 et 24. De manière classique, les deux entrées 26a et 26b du différentiel 26 engrènent avec le satellite 26c lequel fait tourner l'arbre 26d. De la sorte, le mouvement de rotation de l'arbre 26d du différentiel 26 correspond à la somme des mouvements de rotation des entrées a et b des différentiels 22 et 24, qui sont fonction de la fréquence des balanciers 16 des quatre ensembles A, B, C et D. Ainsi, en reliant de manière classique l'arbre 26d du différentiel 26 à un engrenage de minuterie 27, il est possible de réaliser l'affichage du temps correspondant à la moyenne des fréquences des balanciers de chacun des ensembles A, B, C et D. Dès lors que les balanciers se trouvent dans des plans tels que l'orientation relative de chacun des balanciers en référence aux autres est identique, quel que soit le balancier considéré, il en résulte que la marche n'est pratiquement pas influencée par la position du mouvement.A third spherical differential gear 26 also includes two wheels forming inputs 26a and 26b, a satellite 26c and a shaft 26d. The wheels 26a and 26b are respectively connected to pinions e integral with the shafts of spherical differentials 22 and 24. Conventionally, the two inputs 26a and 26b of the differential 26 mesh with the planet 26c which rotates the shaft 26d. In this way, the rotational movement of the shaft 26d of the differential 26 corresponds to the sum of the rotational movements of the inputs a and b of the differentials 22 and 24, which are a function of the frequency of the rockers 16 of the four sets A, B , C and D. Thus, by conventionally connecting the shaft 26d of the differential 26 to a timer gear 27, it is possible to display the time corresponding to the average frequency of the rockers of each of the sets A, B, C and D. Since the rockers are in such plans as the relative orientation of each of the rockers with reference to others is identical, regardless of the pendulum considered, it follows that the walking is practically not influenced by the position of the movement.

Le mouvement d'horlogerie 30 représenté de manière très schématique à la figure 2 présente une forme de pyramide tronquée ayant deux bases triangulaires équilatérales et trois côtés trapézoïdaux qui, en l'absence de troncature, formeraient trois triangles rectangles isocèles. Cette pyramide forme une partie d'un cube dont trois des faces sont formées d'un carré obtenu par l'adjonction d'un deuxième triangle rectangle adjacent aux trois triangles rectangles. Le mouvement 30 est muni de trois ensembles E, F et G représentés schématiquement par deux cercles, illustrant respectivement le barillet 12 et le balancier 16, et un trait, illustrant le rouage de finissage 14. Les axes des mobiles de chacun de ces ensembles, comprenant notamment les balanciers 16, sont respectivement perpendiculaires à l'une des faces du cube.The watch movement 30 represented very schematically in the figure 2 has a truncated pyramid shape with two equilateral triangular bases and three trapezoidal sides which, in the absence of truncation, would form three isosceles right triangles. This pyramid forms a part of a cube whose three faces are formed of a square obtained by the addition of a second right triangle adjacent to the three right triangles. The movement 30 is provided with three sets E, F and G diagrammatically represented by two circles, respectively illustrating the barrel 12 and the rocker 16, and a line illustrating the finishing gear 14. The axes of the mobiles of each of these sets, including the rockers 16, are respectively perpendicular to one of the faces of the cube.

Le mouvement 30 porte, en outre, sur de mobiles tels qu'une chaussée et une roue à canon non représentés au dessin, des moyens d'affichage du temps formés par des aiguilles 18 visibles sur la figure 2.The movement 30 also carries on mobile devices such as a roadway and a gun wheel not shown in the drawing, time display means formed by needles 18 visible on the figure 2 .

Pour que le temps affiché corresponde à la moyenne des temps mesurés par les trois balanciers 16, le mouvement 30 est muni d'une structure de type différentiel 32 (cf. Figure 4) reliée cinématiquement à chacun des barillets 12. Plus précisément, en référence à la figure 4, cette structure 32 comprend deux engrenages différentiels sphériques 34 et 36. L'engrenage différentiel 34 comprend deux roues formant des entrées 34a, 34b, un satellite 34c et un arbre 34d. Les roues 34a et 34b sont respectivement reliées cinématiquement aux barillets 12 des ensembles E et F. Le satellite 34c est relié à l'arbre 34d sur lequel pivotent aussi les deux roues 34a et 34b. Ces dernières engrènent avec le satellite 34c.For the displayed time to correspond to the average of the times measured by the three rockers 16, the movement 30 is provided with a differential type structure 32 (cf. Figure 4 ) kinematically connected to each of the barrels 12. More precisely, with reference to the figure 4 this structure 32 comprises two spherical differential gears 34 and 36. The differential gear 34 comprises two wheels forming inputs 34a, 34b, a satellite 34c and a shaft 34d. The wheels 34a and 34b are respectively kinematically connected to the barrels 12 of the sets E and F. The satellite 34c is connected to the shaft 34d on which the two wheels 34a and 34b also pivot. The latter meshes with the satellite 34c.

Un deuxième engrenage différentiel sphérique 36 comprend également deux roues formant des entrées 36a et 36b, un satellite 36c et un arbre 36d. L'entrée 36a de l'engrenage différentiel 36 est reliée cinématiquement à l'arbre 34d de l'engrenage différentiel 34 au moyen d'un pignon 34e solidaire dudit arbre 34d, alors que l'entrée 36b est reliée cinématiquement au barillet 12 de l'ensemble G. Les roues 36a, 36b engrènent avec le satellite 36c, lequel fait tourner l'arbre 36d de l'engrenage différentiel 36. Le mouvement de l'arbre 36d du différentiel 36 est donc une combinaison des mouvements appliqués aux entrées 34a et 34b du différentiel 34 et à l'entrée 36a du différentiel 36. Dans ce cas toutefois, la structure des engrenages différentiels n'est pas symétrique. C'est pourquoi il est nécessaire d'ajuster les rapports d'engrenages de manière à ce que, pour chaque oscillation du balancier, l'angle parcouru par les moyens d'affichage soit le même. De la sorte, le mouvement de rotation de l'arbre 36d du différentiel 36 correspond à la somme des mouvements de rotation des entrées 34a et 34b du différentiels 34 et 36a du différentiel 36, qui sont fonctions de la fréquence des balanciers 16 des trois ensembles E, F et G. Ainsi, en reliant de manière classique l'arbre 36d du différentiel 36, par un pignon 36e à un engrenage de minuterie 37, il est possible de réaliser l'affichage du temps correspondant à la moyenne des fréquences des balanciers de chacun des ensembles E, F et G. Dans cette variante, on remarque que les trois balanciers sont inclinés par rapport au plan du mouvement, et par rapport à l'axe des moyens d'affichage. Dès lors que les balanciers ne forment pas un angle droit avec les moyens d'affichage, l'épaisseur du mouvement peut être maintenue dans des limites raisonnables.A second spherical differential gear 36 also includes two wheels forming inputs 36a and 36b, a satellite 36c and a shaft 36d. The input 36a of the differential gear 36 is kinematically connected to the shaft 34d of the differential gear 34 by means of a gear 34e integral with said shaft 34d, while the input 36b is kinematically connected to the barrel 12 of the gear 34. assembly G. The wheels 36a, 36b mesh with the satellite 36c, which rotates the shaft 36d of the differential gear 36. The movement of the shaft 36d of the differential 36 is therefore a combination of the movements applied to the inputs 34a and 34b of the differential 34 and the input 36a of the differential 36. In this case, however, the structure of the differential gears is not symmetrical. This is why it is necessary to adjust the gear ratios so that for each oscillation of the balance, the angle traveled by the display means is the same. In this way, the rotational movement of the shaft 36d of the differential 36 corresponds to the sum of the rotational movements of the inputs 34a and 34b of the differentials 34 and 36a of the differential 36, which are functions of the frequency of the rockers 16 of the three sets E, F and G. Thus, by conventionally connecting the shaft 36d of the differential 36, by a pinion 36e to a timer gear 37, it is possible to display the time corresponding to the average frequency of the rockers of each of the sets E, F and G. In this variant, it is noted that the three rockers are inclined relative to the plane of movement, and relative to the axis of the display means. Since the rockers do not form a right angle with the display means, the thickness of the movement can be kept within reasonable limits.

Il est bien évident que les engrenages différentiels 34 et 36 peuvent également être agencés de manière à être concentriques, équipés d'un seul arbre 36d. Une telle configuration est représentée sur la figure 5, les éléments identiques à la réalisation de la figure 4 sont repris avec les mêmes références. Les roues 34a et 34b sont respectivement reliées cinématiquement aux barillets 12 des ensembles E et F, alors que la roue 36b est reliée au barillet 12 de l'ensemble G. Le satellite 34c est solidaire d'un arbre 38 monté pivotant sur l'arbre 36d, l'arbre 38 étant également solidaire en rotation avec la roue 36a. Les roues 36a et 36b engrènent avec le satellite 36c, lequel fait tourner l'arbre 36d, l'axe du satellite 36c étant fixé sur l'arbre 36d. De la sorte, la vitesse de rotation de l'arbre 36d est fonction des vitesses de rotation des barillets 12 des trois ensembles E, F et G, ces vitesses étant définies par les fréquences des balanciers 16 des mêmes ensembles.It is obvious that the differential gears 34 and 36 can also be arranged to be concentric, equipped with a single shaft 36d. Such a configuration is represented on the figure 5 , the elements identical to the realization of the figure 4 are repeated with the same references. The wheels 34a and 34b are respectively kinematically connected to the barrels 12 of the sets E and F, while the wheel 36b is connected to the barrel 12 of the assembly G. The satellite 34c is secured to a shaft 38 pivotally mounted on the shaft 36d, the shaft 38 is also integral in rotation with the wheel 36a. The wheels 36a and 36b meshing with the satellite 36c, which rotates the shaft 36d, the axis of the satellite 36c being fixed on the shaft 36d. In this way, the speed of rotation of the shaft 36d is a function of the rotational speeds of the barrels 12 of the three sets E, F and G, these speeds being defined by the frequencies of the rockers 16 of the same sets.

Dès lors que les balanciers oscillent dans des plans différents, il est nécessaire de relier les entrées des différentiels aux barillets 12 par des engrenages coniques, bien connus de l'homme du métier, tels que celui représenté schématiquement à la figure 6.Since the pendulums oscillate in different planes, it is necessary to connect the inputs of the differentials to the barrels 12 by bevel gears, well known to those skilled in the art, such as that shown schematically in FIG. figure 6 .

Dans les deux variantes décrites ci-dessus, chaque balancier est alimenté par un barillet qui lui est propre. Il est également possible de n'avoir qu'un barillet, et une structure arborescente, le barillet formant le tronc, alors que les structures différentielles 20 ou 32 permettent l'existence de quatre, respectivement trois embranchements, chacun conduisant à l'alimentation d'un balancier.In the two variants described above, each balance is powered by a barrel of its own. It is also possible to have only one barrel, and a tree structure, the barrel forming the trunk, while the differential structures 20 or 32 allow the existence of four, respectively three branches, each leading to the power supply. a pendulum.

Avec de tels mouvements d'horlogerie, l'effet dû aux changements de positions est fortement réduit. Il peut toutefois subsister un effet résiduel dû au point d'attache des spiraux au bâti. Pour éliminer complètement ce défaut il est possible de remplacer chacun des balanciers par un tourbillon, les axes de la cage et du balancier étant perpendiculaires aux faces d'un polyèdre régulier.With such watch movements, the effect due to changes of position is greatly reduced. However, there may still be a residual effect due at the point of attachment of the spirals to the frame. To completely eliminate this defect it is possible to replace each of the rockers by a vortex, the axes of the cage and the balance being perpendicular to the faces of a regular polyhedron.

Les polyèdres réguliers considérés sont un tétraèdre et un cube. Il est évident que l'effet obtenu pourrait être le même avec un polyèdre comportant plus de côtés. La complexité du mécanisme et le volume occupé seraient toutefois sensiblement augmentés, pour une amélioration modeste de la précision.The regular polyhedra considered is a tetrahedron and a cube. It is obvious that the effect obtained could be the same with a polyhedron with more sides. The complexity of the mechanism and the volume occupied, however, would be significantly increased, for a modest improvement in accuracy.

Claims (6)

  1. A movement for a timepiece including an energy source (12), a time base provided with several balances (16) pivoting around their respective pivot axis, linking means (14) for linking the energy source (12) to the time base, and wheels arranged to support means for displaying the time (18), characterized in that said balances (16) are oriented such that planes perpendicular to their pivot axes define a regular polyhedron.
  2. The movement according to claim 1, characterized in that said time base comprises four balances (16) and in that said polyhedron is a regular tetrahedron.
  3. The movement according to claim 1, characterized in that said time base comprises three balances (16) and in that said polyhedron is a cube.
  4. The movement according to one of claims 1 to 3, characterized in that the energy source comprises at least one barrel (12) per balance (16), in that said barrel (12) is connected to the balance (16) by a gear train (14), and in that it further includes a differential-type structure (20, 32) linking each of the gear trains (14) to said wheels arranged to support means for displaying the time (18).
  5. The movement according to one of claims 1 to 3, characterized in that it further includes a differential-type structure and in that the energy source comprises at least one barrel kinematically linked to said wheels and to the balances by said differential-type structure.
  6. The movement according to one of claims 1 to 5, characterized in that the means for displaying the time (18) rotate around an axis forming non-right angles with the axis of the balances (16).
EP10781647.2A 2009-11-16 2010-11-15 Timepiece movement Active EP2502118B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01755/09A CH702294B1 (en) 2009-11-16 2009-11-16 Movement timepiece.
PCT/EP2010/067430 WO2011058157A1 (en) 2009-11-16 2010-11-15 Timepiece movement

Publications (2)

Publication Number Publication Date
EP2502118A1 EP2502118A1 (en) 2012-09-26
EP2502118B1 true EP2502118B1 (en) 2013-08-28

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ID=41668453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10781647.2A Active EP2502118B1 (en) 2009-11-16 2010-11-15 Timepiece movement

Country Status (4)

Country Link
EP (1) EP2502118B1 (en)
CH (1) CH702294B1 (en)
HK (1) HK1171269A1 (en)
WO (1) WO2011058157A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2615504A1 (en) 2012-01-13 2013-07-17 Manufacture Roger Dubuis S.A. Clock movement with tilted balances
CH708038B1 (en) * 2013-05-07 2017-12-15 Hublot S A Genève Watch movement with three-dimensional resonance regulator.
EP3015924B1 (en) 2014-11-03 2017-08-09 Antoine Preziuso Genève SA Differential, in particular for timepieces
CH710817B1 (en) * 2015-03-04 2019-07-15 Hublot Sa Geneve Watch movement with resonant regulator with magnetic interaction.
FR3094804B1 (en) 2019-04-02 2021-10-22 Vianney Halter "Device for coupling two clockwork oscillators"
FR3107603B1 (en) * 2020-02-26 2022-01-21 Vianney Halter “Tourbillon with two oscillators in a cage”

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH156801A (en) * 1931-05-13 1932-08-31 Vuilleumier Marcel Clockwork movement.
CH694833A5 (en) 2003-10-31 2005-07-29 Complitime Sa Timepiece including two balances.
EP1640821B1 (en) * 2004-09-22 2009-04-22 Antoine Preziuso Geneve SA Watch movement with a plurality of balances
WO2006067597A2 (en) * 2004-12-22 2006-06-29 Raoul Allaman Wristwatch regulating member
CN101606108B (en) * 2007-02-08 2011-06-22 康普利计时股份有限公司 Watch movement

Also Published As

Publication number Publication date
HK1171269A1 (en) 2013-03-22
CH702294B1 (en) 2014-05-30
WO2011058157A1 (en) 2011-05-19
CH702294A1 (en) 2011-05-31
EP2502118A1 (en) 2012-09-26

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