EP1868049B1 - Timepiece provided with a simplified phase of the moon indicator - Google Patents

Timepiece provided with a simplified phase of the moon indicator Download PDF

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Publication number
EP1868049B1
EP1868049B1 EP06115304A EP06115304A EP1868049B1 EP 1868049 B1 EP1868049 B1 EP 1868049B1 EP 06115304 A EP06115304 A EP 06115304A EP 06115304 A EP06115304 A EP 06115304A EP 1868049 B1 EP1868049 B1 EP 1868049B1
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EP
European Patent Office
Prior art keywords
wheel
toothed disc
control wheel
timepiece
teeth
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EP06115304A
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German (de)
French (fr)
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EP1868049A1 (en
Inventor
Eric Goeller
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Montres Breguet SA
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Montres Breguet SA
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Priority to EP06115304A priority Critical patent/EP1868049B1/en
Priority to AT06115304T priority patent/ATE510244T1/en
Publication of EP1868049A1 publication Critical patent/EP1868049A1/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
    • G04B19/00—Indicating the time by visual means
    • G04B19/26—Clocks or watches with indicators for tides, for the phases of the moon, or the like
    • G04B19/268—Clocks or watches with indicators for tides, for the phases of the moon, or the like with indicators for the phases of the moon

Definitions

  • the invention relates to a piece having a moon phase indicator.
  • the invention more particularly relates to a timepiece comprising a clockwork movement and a moon phase indicator, in which the moon phase indicator comprises a toothed disc driven step by step by a periodically actuated drive lever. by the clockwork movement via a cam mechanism, wherein the cam mechanism comprises a cam wheel which controls actuation of the latch once per revolution of the control wheel so that the toothed disc advances one step per revolution of the control wheel.
  • a timepiece of this type is described and represented in particular in the document EP 1 353 244 A wherein the control wheel performs a revolution in twenty-four hours and meshes with the hour wheel of the watch movement which drives it in rotation.
  • the control wheel has on one of its faces a pin which cooperates with a control surface arranged on the rocker to cause the pivoting of this rocker to the toothed disk and drive it one step about its axis of rotation.
  • the toothed disc which has fifty-nine teeth here, is driven directly by a control wheel which makes a turn in twenty-four hours.
  • the duration of a lunar month is twenty-nine days, twelve hours, forty-four minutes, and 2.806 seconds.
  • the toothed disk thus performed a complete turn representing two lunar months, each having an average duration of twenty-nine days and twelve hours. Over two months, the display error of the moon phases is forty-four minutes and 2.806 seconds less per month.
  • the aim of the invention is to improve the accuracy of the moon phase indicator by proposing a simple and space-saving solution.
  • the invention proposes a timepiece of the type described above, characterized in that the control wheel engages with a return which is integral in rotation with a drive wheel performing a turn in twenty-four hours. , in that a lunar month corresponds to a number N of steps of the toothed disc, and in that the control wheel performs a turn in one Nth of lunar month.
  • each drive step of the toothed disc corresponds exactly to one Nth of a lunar month.
  • the control wheel performs a lap in 85048,07966 seconds.
  • the toothed disc comprises sixty teeth corresponding to sixty paces, it performs one revolution in two lunar months, and the control wheel performs a revolution in one thirtieth of a lunar month.
  • the toothed disc thus displays two lunar months in one complete rotation.
  • the gear ratio between the control wheel and the return gear is substantially equal to 1.015895953757230, the control wheel having a number of teeth smaller than that of the gearbox, for example the control wheel has 692 teeth and the gearbox has 703 teeth.
  • control wheel and the return are made either of crystalline material or of electroformed metal, which facilitates the manufacture of gears having a large number of teeth so as to further improve the accuracy of the machine. moon phase indicator.
  • the toothed disc comprises a wolf teeth teeth and the driving end of the rocker is provided with a pawl which cooperates with said toothing of the toothed disc to drive the rotating toothed disc, each corresponding wolf tooth at a training pace.
  • a correction member is provided for changing the angular position of the toothed disc.
  • the correction member comprises a drive finger which is provided to bear against at least one tooth of the toothed disc.
  • the teeth of the wheels are not represented systematically.
  • the number of teeth shown in the figures is not necessarily representative of the actual number of teeth mentioned in the description.
  • FIG 1 schematically shows a timepiece 10 equipped with a moon phase indicator 12 according to the teachings of the invention.
  • the timepiece 10 for example an analog display wristwatch, comprises a mechanical clockwork movement 14 which is provided with a timer train for driving display hands 16.
  • This clockwork includes in particular an hour wheel, said hours gun 18, which is shown on the figures 2 and 3 .
  • a control member 20, such as a winding crown, is provided to allow manual action on the watch movement 14, in particular to perform its setting time.
  • the moon phase indicator 12 comprises a toothed disk 22 which is driven step by step by a driving rocker 24 actuated periodically by the clockwork movement 14 via a cam mechanism 26.
  • the toothed disk 22 is provided to be driven here in the clockwise direction.
  • the toothed disc 22 has a number of teeth 27 equal to twice the number N of steps corresponding to a lunar month.
  • the number N of no corresponding to a lunar month is thirty and the toothed disk 22 has sixty teeth 27 which correspond to sixty paces, so that it performs a complete revolution in two lunar months.
  • the toothed disk 22 comprises on its upper display face two full moons 23 intended to run in a window (not shown) of suitable shape arranged in the dial of the timepiece 10.
  • the toothed disk 22 may be rotationally integral with a needle which indicates the lunations by means of appropriate graduations on the dial of the watch.
  • the axes of rotation and rotation mentioned are generally parallel to the axis A1 of the hour wheel 18.
  • the latch 24 is pivotally mounted about its axis A2 between a neutral position, which is shown in broken lines on the figure 3 , and an actuated position, which is shown in solid lines on the figures 2 and 3 . It comprises an actuating arm 28 which cooperates with the cam mechanism 26 and a drive arm 30 which cooperates with the toothing of the toothed disc 22.
  • the toothed disc 22 has teeth in wolf teeth.
  • the free end of the driving arm 30 of the rocker 24 is provided with a pawl 31 which cooperates with the teeth 27 of the wolf of the toothed disc 22 to drive the toothed disk 22 in rotation, each tooth wolf 27 corresponding to a no training.
  • a jumper 39 which abuts against teeth 27 of the toothed disk 22, is provided to hold the toothed disk 27 in place between the drive phases by the rocker 24.
  • a correction member 33 which allows to manually change the angular position of the toothed disc 22 through the watch case.
  • the correction member 33 comprises a drive finger 35 which is movable in translation in a direction D1 substantially tangent to the toothed disc 22.
  • the drive finger 35 bears against at least one tooth 27 of the toothed disk 22 and drives it in rotation in the driving direction, here clockwise, the pawl 31 then retracting to allow the toothed disk 22 to rotate by one step.
  • the cam mechanism 26 comprises a control wheel 32 carrying a cam 34 which controls the actuation of the rocker 24, once per revolution of the control wheel 32, so that the toothed disc 22 advances one step per revolution of the control wheel 32.
  • the cam 34 is constituted here by a cylindrical pin which is arranged in the upper face 36 of the control wheel 32, near its outer peripheral edge, and which bears radially, once per revolution, against a screwed surface. to the actuating arm 28.
  • a spring 37 biases the actuating arm 28 towards the axis of rotation of the control wheel 32 and toward the cam 34.
  • the cam 34 bears against the actuating arm 28, it pushes it outwards, so that the rocker 24 pivots towards its actuated position and causes the pawl 31 to move with a tooth 27 upstream on the toothed disc 22.
  • the latch 24 returns to its neutral position by driving the toothed disc 22 one step.
  • control wheel 32 performs a turn in one Nth of a lunar month, here one thirtieth of a lunar month, and meshes with a reference 38 which is integral in rotation with a driving wheel 40 performing a turn in twenty-four hours.
  • the drive wheel 40 is here driven directly by the hour wheel 18 in a gear ratio suitable for the drive wheel 40 to perform a turn in twenty-four hours.
  • control wheel 32 has 692 teeth and the gear 38 has 703 teeth, which corresponds to a gear ratio Z, between the control wheel 32 and the gearbox 38, substantially equal to 1, 015895953 for obtaining a sufficient accuracy of the rotation of the control wheel 32.
  • control wheel 32 and the return 38 are made of a crystalline material, in particular monocrystalline or polycrystalline silicon.
  • a crystalline material in particular monocrystalline or polycrystalline silicon.
  • the document EP 0 732 635 A describes an exemplary embodiment of such a micromechanical piece of crystalline material.
  • control wheel 32 and the transmission 38 are made of electroformed metal, in particular nickel.
  • the document EP 1 225 477 A describes an exemplary embodiment of such a micromechanical part by photostructuration and electroforming.
  • control wheel 32 and the return 38 have the advantage of allowing the realization of the control wheel 32 and the return 38 with a large number of teeth for a lower cost, an optimal quality, while ensuring reasonable dimensions for the diameter of the wheel. control 32 and the return 38, which allows for a particularly compact moon phase indicator 12.

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  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

The timepiece has a control wheel (32) engaged with a setting wheel (38) which is connected in rotation with a driving wheel (40) executing a rotation in twenty-four hours. One lunar month corresponds to a number of steps of a toothed disk (22). The wheel (32) executes a rotation in 30th disk step of lunar month. Gear ratio between the wheels (32, 38) is equal to 1.015895953757230. The wheels (32, 38) has 692 and 703 teeth, respectively, and are made of crystalline material e.g. single-crystal silicon and polycrystalline silicon, and electroformed metal.

Description

L'invention concerne une pièce comportant un indicateur de phases de lune.The invention relates to a piece having a moon phase indicator.

L'invention concerne plus particulièrement une pièce d'horlogerie comportant un mouvement d'horlogerie et un indicateur de phases de lune, dans laquelle l'indicateur de phases de lune comporte un disque denté entraîné pas à pas par une bascule d'entraînement actionnée périodiquement par le mouvement d'horlogerie via un mécanisme à came, dans laquelle le mécanisme à came comporte une roue de commande portant une came qui commande l'actionnement de la bascule une fois par tour de la roue de commande de manière que le disque denté avance d'un pas par tour de la roue de commande.The invention more particularly relates to a timepiece comprising a clockwork movement and a moon phase indicator, in which the moon phase indicator comprises a toothed disc driven step by step by a periodically actuated drive lever. by the clockwork movement via a cam mechanism, wherein the cam mechanism comprises a cam wheel which controls actuation of the latch once per revolution of the control wheel so that the toothed disc advances one step per revolution of the control wheel.

Une pièce d'horlogerie de ce type est décrite et représentée notamment dans le document EP 1 353 244 A dans lequel la roue de commande effectue un tour en vingt-quatre heures et engrène avec la roue des heures du mouvement d'horlogerie qui l'entraîne en rotation. La roue de commande comporte sur une de ses faces une goupille qui coopère avec une surface commande agencée sur la bascule pour provoquer le pivotement de cette bascule vers le disque denté et l'entraîner d'un pas autour de son axe de rotation.A timepiece of this type is described and represented in particular in the document EP 1 353 244 A wherein the control wheel performs a revolution in twenty-four hours and meshes with the hour wheel of the watch movement which drives it in rotation. The control wheel has on one of its faces a pin which cooperates with a control surface arranged on the rocker to cause the pivoting of this rocker to the toothed disk and drive it one step about its axis of rotation.

La précision d'une telle pièce d'horlogerie, concernant l'affichage des phases de lune, peut être jugée insuffisante par certains utilisateurs. En effet, le disque denté, qui possède ici cinquante neuf dents, est entraîné directement par une roue de commande qui effectue un tour en vingt-quatre heures. Or, la durée d'un mois lunaire est de vingt neuf jours, douze heures, quarante-quatre minutes et 2,806 secondes. Après cinquante-neuf jours, le disque denté a donc effectué un tour complet représentant deux mois lunaires, chacun ayant en moyenne une durée de vingt neuf jours et douze heures. Sur deux mois, l'erreur d'affichage des phases de lune est donc de quarante-quatre minutes et 2,806 secondes en moins par mois.The accuracy of such a timepiece, concerning the display of moon phases, may be considered insufficient by some users. In fact, the toothed disc, which has fifty-nine teeth here, is driven directly by a control wheel which makes a turn in twenty-four hours. Now, the duration of a lunar month is twenty-nine days, twelve hours, forty-four minutes, and 2.806 seconds. After fifty-nine days, the toothed disk thus performed a complete turn representing two lunar months, each having an average duration of twenty-nine days and twelve hours. Over two months, the display error of the moon phases is forty-four minutes and 2.806 seconds less per month.

D'autres indicateurs de phases de lune ont été proposés avec une meilleur précision, mais ceux-ci font généralement appel à un grand nombre de roues d'engrenages ce qui pénalise l'encombrement de l'indicateur de phases de lune et ce qui rend le mécanisme trop complexe.Other moon phase indicators have been proposed with greater precision, but these generally use a large number of gear wheels which penalizes the bulk of the moon phase indicator and what makes the mechanism is too complex.

L'invention vise à améliorer la précision de l'indicateur de phases de lune en proposant une solution simple et peu encombrante.The aim of the invention is to improve the accuracy of the moon phase indicator by proposing a simple and space-saving solution.

Dans ce but, l'invention propose une pièce d'horlogerie du type décrit précédemment, caractérisée en ce que la roue de commande engrène avec un renvoi qui est solidaire en rotation d'une roue d'entraînement effectuant un tour en vingt-quatre heures, en ce qu'un mois lunaire correspond à un nombre N de pas du disque denté, et en ce que la roue de commande effectue un tour en un Nième de mois lunaire.For this purpose, the invention proposes a timepiece of the type described above, characterized in that the control wheel engages with a return which is integral in rotation with a drive wheel performing a turn in twenty-four hours. , in that a lunar month corresponds to a number N of steps of the toothed disc, and in that the control wheel performs a turn in one Nth of lunar month.

Grâce à la pièce d'horlogerie selon l'invention, comme la roue de commande effectue un tour en un Nième de mois lunaire, chaque pas d'entraînement du disque denté correspond exactement à un Nième de mois lunaire. Ainsi, lorsque le nombre N de pas correspondant à un mois lunaire est trente, la roue de commande effectue un tour en 85048,07966 secondes.Thanks to the timepiece according to the invention, as the control wheel performs a turn in one Nth of lunar month, each drive step of the toothed disc corresponds exactly to one Nth of a lunar month. Thus, when the number N of no corresponding to a lunar month is thirty, the control wheel performs a lap in 85048,07966 seconds.

Selon un mode de réalisation préféré, le disque denté comporte soixante dents correspondant à soixante pas, il effectue un tour en deux mois lunaires, et la roue de commande effectue un tour en un trentième de mois lunaire. Le disque denté affiche ainsi deux mois lunaires en une rotation complète.According to a preferred embodiment, the toothed disc comprises sixty teeth corresponding to sixty paces, it performs one revolution in two lunar months, and the control wheel performs a revolution in one thirtieth of a lunar month. The toothed disc thus displays two lunar months in one complete rotation.

Avantageusement, le rapport d'engrenage entre la roue de commande et le renvoi est sensiblement égal à 1.015895953757230, la roue de commande comportant un nombre de dents inférieur à celui du renvoi, par exemple la roue de commande possède 692 dents et le renvoi possède 703 dents. On obtient ainsi une précision optimale de l'indicateur de phases de lune, la rotation complète de la roue de commande correspondant à la durée réelle d'un trentième de mois lunaire au dixième de seconde près.Advantageously, the gear ratio between the control wheel and the return gear is substantially equal to 1.015895953757230, the control wheel having a number of teeth smaller than that of the gearbox, for example the control wheel has 692 teeth and the gearbox has 703 teeth. This gives an optimal precision of the moon phase indicator, the complete rotation of the control wheel corresponding to the actual duration of a thirtieth of a lunar month to the nearest tenth of a second.

Selon des modes de réalisation avantageux, la roue de commande et le renvoi sont réalisés, soit en matériau cristallin, soit en métal électroformé, ce qui facilite la fabrication d'engrenages ayant un grand nombre de dents de manière à améliorer encore la précision de l'indicateur de phases de lune.According to advantageous embodiments, the control wheel and the return are made either of crystalline material or of electroformed metal, which facilitates the manufacture of gears having a large number of teeth so as to further improve the accuracy of the machine. moon phase indicator.

De préférence, le disque denté comporte une denture en dents de loup et l'extrémité d'entraînement de la bascule est pourvue d'un cliquet qui coopère avec ladite denture du disque denté pour entraîner le disque denté en rotation, chaque dent de loup correspondant à un pas d'entraînement. De plus, un organe de correction est prévu pour modifier la position angulaire du disque denté. L'organe de correction comporte un doigt d'entraînement qui est prévu pour venir en appui contre au moins une dent du disque denté. Grâce à cette disposition, on obtient un entraînement pas à pas du disque denté plus facile à corriger, par exemple lorsque la montre a été arrêtée plusieurs jours, sans risque de détériorer des éléments du mouvement d'horlogerie ou de l'indicateur de phases de lune. De plus, grâce au cliquet, la correction peut être effectuée y compris pendant l'actionnement de la bascule.Preferably, the toothed disc comprises a wolf teeth teeth and the driving end of the rocker is provided with a pawl which cooperates with said toothing of the toothed disc to drive the rotating toothed disc, each corresponding wolf tooth at a training pace. In addition, a correction member is provided for changing the angular position of the toothed disc. The correction member comprises a drive finger which is provided to bear against at least one tooth of the toothed disc. With this arrangement, we obtain a drive step by step of the toothed disc easier to correct, for example when the watch has been stopped several days, without risk of damaging elements of the watch movement or the phase indicator of Moon. In addition, thanks to the ratchet, the correction can be performed even during the actuation of the rocker.

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

  • la figure 1 est un schéma fonctionnel qui représente une pièce d'horlogerie équipée d'un indicateur de phases de lune conforme aux enseignements de l'invention;
  • la figure 2 est une vue en perspective qui représente schématiquement l'indicateur de phases de lune de la figure 1 lorsque sa bascule d'entraînement est actionnée;
  • la figure 3 est une vue de dessus qui représente schématiquement l'indicateur de phases de lune de la figure 1 dans la même position que sur la figure 2.
Other features and advantages of the present invention will appear more clearly on reading the detailed description which follows, made with reference to the accompanying drawings given by way of non-limiting example and in which:
  • the figure 1 is a block diagram showing a timepiece equipped with a moon phase indicator in accordance with the teachings of the invention;
  • the figure 2 is a perspective view that schematically represents the moon phase indicator of the figure 1 when his drive rocker is operated;
  • the figure 3 is a top view that schematically represents the moon phase indicator of the figure 1 in the same position as on the figure 2 .

Pour simplifier les figures, les dentures des roues ne sont pas représentées systématiquement. De plus, le nombre de dents représentées sur les figures n'est pas nécessairement représentatif du nombre de dents réel mentionné dans la description.To simplify the figures, the teeth of the wheels are not represented systematically. In addition, the number of teeth shown in the figures is not necessarily representative of the actual number of teeth mentioned in the description.

Sur la figure 1, on a représenté schématiquement une pièce d'horlogerie 10 équipée d'un indicateur de phases de lune 12 conforme aux enseignements de l'invention.On the figure 1 schematically shows a timepiece 10 equipped with a moon phase indicator 12 according to the teachings of the invention.

La pièce d'horlogerie 10, par exemple une montre-bracelet à affichage analogique, comporte un mouvement d'horlogerie 14 mécanique qui est muni d'un rouage de minuterie pour l'entraînement d'aiguilles 16 d'affichage. Ce rouage de minuterie comporte notamment une roue des heures, dit canon des heures 18, qui est représenté sur les figures 2 et 3.The timepiece 10, for example an analog display wristwatch, comprises a mechanical clockwork movement 14 which is provided with a timer train for driving display hands 16. This clockwork includes in particular an hour wheel, said hours gun 18, which is shown on the figures 2 and 3 .

Un organe de commande 20, tel qu'une couronne de remontoir, est prévu pour permettre d'agir manuellement sur le mouvement d'horlogerie 14, notamment en vue d'effectuer sa mise à l'heure.A control member 20, such as a winding crown, is provided to allow manual action on the watch movement 14, in particular to perform its setting time.

L'indicateur de phases de lune 12 comporte un disque denté 22 qui est entraîné pas à pas par une bascule 24 d'entraînement actionnée périodiquement par le mouvement d'horlogerie 14 via un mécanisme à came 26. En considérant la figure 2, le disque denté 22 est prévu pour être entraîné ici dans le sens horaire.The moon phase indicator 12 comprises a toothed disk 22 which is driven step by step by a driving rocker 24 actuated periodically by the clockwork movement 14 via a cam mechanism 26. By considering the figure 2 , the toothed disk 22 is provided to be driven here in the clockwise direction.

De préférence, le disque denté 22 comporte un nombre de dents 27 égal à deux fois le nombre N de pas correspondant à un mois lunaire. Ici, le nombre N de pas correspondant à un mois lunaire est trente et le disque denté 22 comporte soixante dents 27 qui correspondent à soixante pas, de sorte qu'il effectue un tour complet en deux mois lunaires.Preferably, the toothed disc 22 has a number of teeth 27 equal to twice the number N of steps corresponding to a lunar month. Here, the number N of no corresponding to a lunar month is thirty and the toothed disk 22 has sixty teeth 27 which correspond to sixty paces, so that it performs a complete revolution in two lunar months.

Le disque denté 22 comporte sur sa face supérieure d'affichage deux lunes 23 pleines destinées à défiler dans un guichet (non représenté) de forme adéquate aménagé dans le cadran de la pièce d'horlogerie 10.The toothed disk 22 comprises on its upper display face two full moons 23 intended to run in a window (not shown) of suitable shape arranged in the dial of the timepiece 10.

Selon une variante de réalisation (non représentée), le disque denté 22 peut être solidaire en rotation d'une aiguille qui indique les lunaisons au moyen de graduations appropriées sur le cadran de la montre.According to an alternative embodiment (not shown), the toothed disk 22 may be rotationally integral with a needle which indicates the lunations by means of appropriate graduations on the dial of the watch.

Dans la suite de la description, les axes de pivotement et de rotation mentionnés sont globalement parallèles à l'axe A1 de la roue des heures 18.In the remainder of the description, the axes of rotation and rotation mentioned are generally parallel to the axis A1 of the hour wheel 18.

La bascule 24 est montée pivotante autour de son axe A2 entre une position neutre, qui est représentée en trait discontinu sur la figure 3, et une position actionnée, qui est représentée en trait continu sur les figures 2 et 3. Elle comporte un bras d'actionnement 28 qui coopère avec le mécanisme à came 26 et un bras d'entraînement 30 qui coopère avec la denture du disque denté 22.The latch 24 is pivotally mounted about its axis A2 between a neutral position, which is shown in broken lines on the figure 3 , and an actuated position, which is shown in solid lines on the figures 2 and 3 . It comprises an actuating arm 28 which cooperates with the cam mechanism 26 and a drive arm 30 which cooperates with the toothing of the toothed disc 22.

Selon un mode de réalisation particulièrement avantageux, le disque denté 22 comporte une denture en dents de loup. L'extrémité libre du bras d'entraînement 30 de la bascule 24 est pourvue d'un cliquet 31 qui coopère avec les dents 27 de loup du disque denté 22 pour entraîner le disque denté 22 en rotation, chaque dent 27 de loup correspondant à un pas d'entraînement.According to a particularly advantageous embodiment, the toothed disc 22 has teeth in wolf teeth. The free end of the driving arm 30 of the rocker 24 is provided with a pawl 31 which cooperates with the teeth 27 of the wolf of the toothed disc 22 to drive the toothed disk 22 in rotation, each tooth wolf 27 corresponding to a no training.

Un sautoir 39, qui vient en appui contre des dents 27 du disque denté 22, est prévu pour maintenir en place le disque denté 27 entre les phases d'entraînement par la bascule 24.A jumper 39, which abuts against teeth 27 of the toothed disk 22, is provided to hold the toothed disk 27 in place between the drive phases by the rocker 24.

De préférence, il est prévu un organe de correction 33 qui permet de modifier manuellement la position angulaire du disque denté 22 à travers la boîte de la montre. L'organe de correction 33 comporte un doigt d'entraînement 35 qui est mobile en translation selon une direction D1 sensiblement tangente au disque denté 22.Preferably, there is provided a correction member 33 which allows to manually change the angular position of the toothed disc 22 through the watch case. The correction member 33 comprises a drive finger 35 which is movable in translation in a direction D1 substantially tangent to the toothed disc 22.

Sous l'effet d'une action manuelle sur l'organe de correction 33, le doigt d'entraînement 35 vient en appui contre au moins une dent 27 du disque denté 22 et l'entraîne en rotation dans le sens d'entraînement, ici le sens horaire, le cliquet 31 s'escamotant alors pour laisser tourner le disque denté 22 d'un pas.Under the effect of a manual action on the correction member 33, the drive finger 35 bears against at least one tooth 27 of the toothed disk 22 and drives it in rotation in the driving direction, here clockwise, the pawl 31 then retracting to allow the toothed disk 22 to rotate by one step.

Le mécanisme à came 26 comporte une roue de commande 32 portant une came 34 qui commande l'actionnement de la bascule 24, une fois par tour de la roue de commande 32, de manière que le disque denté 22 avance d'un pas par tour de la roue de commande 32.The cam mechanism 26 comprises a control wheel 32 carrying a cam 34 which controls the actuation of the rocker 24, once per revolution of the control wheel 32, so that the toothed disc 22 advances one step per revolution of the control wheel 32.

La came 34 est constituée ici par une goupille cylindrique qui est agencée dans la face supérieure 36 de la roue de commande 32, à proximité de son bord périphérique externe, et qui vient en appui radial, une fois par tour, contre une surface en vis-à-vis du bras d'actionnement 28.The cam 34 is constituted here by a cylindrical pin which is arranged in the upper face 36 of the control wheel 32, near its outer peripheral edge, and which bears radially, once per revolution, against a screwed surface. to the actuating arm 28.

Selon le mode de réalisation représenté, un ressort 37 sollicite le bras d'actionnement 28 vers l'axe de rotation de la roue de commande 32 et vers la came 34. Ainsi, lorsque la came 34 vient en appui contre le bras d'actionnement 28, elle le repousse vers l'extérieur, de sorte que la bascule 24 pivote vers sa position actionnée et provoque le déplacement du cliquet 31 d'une dent 27 vers l'amont sur le disque denté 22. Lorsque la came 34 relâche le bras d'actionnement 28, la bascule 24 revient vers sa position neutre en entraînant le disque denté 22 d'un pas.According to the embodiment shown, a spring 37 biases the actuating arm 28 towards the axis of rotation of the control wheel 32 and toward the cam 34. Thus, when the cam 34 bears against the actuating arm 28, it pushes it outwards, so that the rocker 24 pivots towards its actuated position and causes the pawl 31 to move with a tooth 27 upstream on the toothed disc 22. When the cam 34 releases the actuating arm 28, the latch 24 returns to its neutral position by driving the toothed disc 22 one step.

Conformément aux enseignements de l'invention, la roue de commande 32 effectue un tour en un Nième de mois lunaire, ici un trentième de mois lunaire, et engrène avec un renvoi 38 qui est solidaire en rotation d'une roue d'entraînement 40 effectuant un tour en vingt-quatre heures. La roue d'entraînement 40 est ici entraînée directement par la roue des heures 18 selon un rapport d'engrenage approprié permettant à la roue d'entraînement 40 d'effectuer un tour en vingt-quatre heures.In accordance with the teachings of the invention, the control wheel 32 performs a turn in one Nth of a lunar month, here one thirtieth of a lunar month, and meshes with a reference 38 which is integral in rotation with a driving wheel 40 performing a turn in twenty-four hours. The drive wheel 40 is here driven directly by the hour wheel 18 in a gear ratio suitable for the drive wheel 40 to perform a turn in twenty-four hours.

Selon un mode de réalisation avantageux, la roue de commande 32 possède 692 dents et le renvoi 38 possède 703 dents, ce qui correspond à un rapport d'engrenage Z, entre la roue de commande 32 et le renvoi 38, sensiblement égal à 1,015895953 permettant d'obtenir une précision suffisante de la rotation de la roue de commande 32.According to an advantageous embodiment, the control wheel 32 has 692 teeth and the gear 38 has 703 teeth, which corresponds to a gear ratio Z, between the control wheel 32 and the gearbox 38, substantially equal to 1, 015895953 for obtaining a sufficient accuracy of the rotation of the control wheel 32.

Selon un premier mode de réalisation, la roue de commande 32 et le renvoi 38 sont réalisés dans un matériau cristallin, en particulier du silicium monocristallin ou polycristallin. Le document EP 0 732 635 A décrit un exemple de réalisation d'une telle pièce de micromécanique en matériau cristallin.According to a first embodiment, the control wheel 32 and the return 38 are made of a crystalline material, in particular monocrystalline or polycrystalline silicon. The document EP 0 732 635 A describes an exemplary embodiment of such a micromechanical piece of crystalline material.

Selon un second mode de réalisation, la roue de commande 32 et le renvoi 38 sont réalisés en métal électroformé, en particulier en nickel. Le document EP 1 225 477 A décrit un exemple de réalisation d'une telle pièce de micromécanique par photostructuration et électroformage.According to a second embodiment, the control wheel 32 and the transmission 38 are made of electroformed metal, in particular nickel. The document EP 1 225 477 A describes an exemplary embodiment of such a micromechanical part by photostructuration and electroforming.

Ces modes de réalisation présentent l'avantage de permettre la réalisation de la roue de commande 32 et du renvoi 38 avec un grand nombre de dents pour un moindre coût, une qualité optimale, tout en garantissant des dimensions raisonnables pour le diamètre de la roue de commande 32 et du renvoi 38, ce qui permet de réaliser un indicateur de phases de lune 12 particulièrement compact.These embodiments have the advantage of allowing the realization of the control wheel 32 and the return 38 with a large number of teeth for a lower cost, an optimal quality, while ensuring reasonable dimensions for the diameter of the wheel. control 32 and the return 38, which allows for a particularly compact moon phase indicator 12.

Claims (8)

  1. Timepiece (10) comprising a movement (14) and a moon phase indicator (12), wherein the moon phase indicator (12) comprises a toothed disc (22) driven step by step by a driving lever (24) actuated periodically by the movement (14) via a cam mechanism (26), wherein the cam mechanism (26) comprises a control wheel (32) carrying a cam (34) that controls the actuation of the lever (24) once every turn of the control wheel (32), so that the toothed disc (22) moves one step forward every turn of the control wheel (32), characterized in that the control wheel (32) meshes with an intermediate wheel (38), which is secured in rotation with a driving wheel (40) completing a turn every 24 hours, in that a lunar month corresponds to a number N of steps of the toothed disc (22), and in that the driving wheel (32) completes a turn in one N-th of a lunar month.
  2. Timepiece (10) according to the preceding claim, characterized in that the toothed disc (22) comprises sixty teeth (27) corresponding to sixty steps, in that the toothed disc (22) completes a turn every two lunar months, and in that the control wheel (32) completes a turn in one 30th of a lunar month.
  3. Timepiece (10) according to any of the preceding claims, characterized in that the gearing ratio between the control wheel (32) and the intermediate wheel (38) is substantially equal to 1,015895953757230, wherein the control wheel (32) comprises a number of teeth inferior to the one of the intermediate wheel (38).
  4. Timepiece (10) according to the preceding claim, characterized in that the control wheel (32) has 692 teeth and the intermediate wheel (38) has 703 teeth.
  5. Timepiece (10) according to any of the preceding claims, characterized in that the control wheel (32) and the intermediate wheel (38) are made of a crystalline material.
  6. Timepiece (10) according to any of the claims 1 to 4, characterized in that the control wheel (32) and the intermediate wheel (38) are made of an electroformed metal.
  7. Timepiece (10) according to any of the preceding claims, characterized in that the toothed disc (22) comprises a wolf-toothed toothing, and in that the driving extremity (30) of the lever (24) is fitted with a pawl (31) cooperating with said toothing of the toothed disc (22) in order to drive the toothed disc (22) in rotation, wherein each wolf tooth (27) corresponds to a driving step.
  8. Timepiece (10) according to the preceding claim, characterized in that it comprises a correction organ (33) allowing to modify the angular position of the toothed disc (22), and in that the correction organ (33) comprises a driving finger (35) which is arranged to abut against at least one tooth (27) of the toothed disc (22).
EP06115304A 2006-06-12 2006-06-12 Timepiece provided with a simplified phase of the moon indicator Active EP1868049B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06115304A EP1868049B1 (en) 2006-06-12 2006-06-12 Timepiece provided with a simplified phase of the moon indicator
AT06115304T ATE510244T1 (en) 2006-06-12 2006-06-12 CLOCK WITH SIMPLIFIED MOON PHASE DISPLAY

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06115304A EP1868049B1 (en) 2006-06-12 2006-06-12 Timepiece provided with a simplified phase of the moon indicator

Publications (2)

Publication Number Publication Date
EP1868049A1 EP1868049A1 (en) 2007-12-19
EP1868049B1 true EP1868049B1 (en) 2011-05-18

Family

ID=37836813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06115304A Active EP1868049B1 (en) 2006-06-12 2006-06-12 Timepiece provided with a simplified phase of the moon indicator

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EP (1) EP1868049B1 (en)
AT (1) ATE510244T1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103092052B (en) * 2011-10-27 2015-02-18 天津海鸥表业集团有限公司 Double-direction rapid-setting moon phase mechanism of mechanical watch
EP2728420B1 (en) * 2012-11-06 2018-01-03 Montres Breguet SA Astronomical watch

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2731715B1 (en) * 1995-03-17 1997-05-16 Suisse Electronique Microtech MICRO-MECHANICAL PART AND METHOD FOR PRODUCING THE SAME
EP1225477A1 (en) * 2001-01-17 2002-07-24 Hubert Lorenz Process for fabricating and marking micromechanical components using photolithography and electrodeposition
EP1353244B1 (en) * 2002-04-03 2009-09-09 Montres Breguet S.A. Timepiece with oblong shaped case

Also Published As

Publication number Publication date
EP1868049A1 (en) 2007-12-19
ATE510244T1 (en) 2011-06-15

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