EP2687918A1 - Moon phase mechanism - Google Patents

Moon phase mechanism Download PDF

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Publication number
EP2687918A1
EP2687918A1 EP13175337.8A EP13175337A EP2687918A1 EP 2687918 A1 EP2687918 A1 EP 2687918A1 EP 13175337 A EP13175337 A EP 13175337A EP 2687918 A1 EP2687918 A1 EP 2687918A1
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EP
European Patent Office
Prior art keywords
sphere
axis
moon
mechanism according
moon phase
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Granted
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EP13175337.8A
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German (de)
French (fr)
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EP2687918B1 (en
Inventor
Yves Corthesy
Bruno Devevey
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LVMH Swiss Manufactures SA
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LVMH Swiss Manufactures SA
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Publication of EP2687918A1 publication Critical patent/EP2687918A1/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

  • Mechanisms for displaying moon phases are well known in watchmaking. Generally, these displays implement disks that allow, in a simplified way, to represent the phases of the moon. It was also proposed, as in the document EP0566529 , to display the phases of the moon by means of a moon represented by a sphere with two halves of different colors. The sphere is pivotally mounted about a first axis passing through the center of the sphere and also pivots around the center of the movement. The combined movements of the sphere make it possible to display the moon phases.
  • This display comprises a sphere representative of the moon, slidably supported on a first rod, which is rotated around the center of the clock.
  • the sphere is linked by a second rod to a second axis not passing through the sphere, around which the sphere rotates.
  • This second axis is mobile, and turns itself around the center of the clock, to which it is linked by a third rod.
  • the sphere rotates moreover around its own axis, parallel to the first stem, at the rate of one turn per lunation thanks to the effect of gravity on a mass situated inside the sphere.
  • This mass is integral with blades in the form of partial tapping which interact with 57 teeth arranged around the inner periphery of the sphere to drive it in rotation about its own axis during the rotation of the first rod around the center of the clock.
  • This mechanism makes it possible to present a representation of the moon corresponding to only one place, and is not suitable for a portable application, in particular because of the use of the gravitational force for part of the training of the sphere.
  • the object of the present invention is to solve this problem by making it possible to display the moon phases in a timepiece more realistically, particularly taking into account the time of day or the latitude at which the wearer of this timepiece timepiece is located.
  • the sphere is pivotally mounted along a second axis perpendicular to the first axis and intersecting the first axis substantially in the center of said sphere.
  • the mechanism includes a second driving kinematic chain for rotating the sphere about the second axis to correct the inclination of the moon representation.
  • a sphere 10 representing the moon This sphere 10 has two distinct hemispheres to represent the face of the moon illuminated by the sun and the face in the shadow. These two hemispheres can be obtained either by making the sphere 10 in the form of two halves of a distinct color, as in the example provided, or by covering the sphere 10 with a hemispherical mask of a distinct color.
  • the object of the present invention is to rotate the sphere 10 along a first axis AA, so as to display the phases of the moon during a lunar cycle, while allowing to rotate the sphere 10 along a second axis BB perpendicular to the first axis AA and crossing the first axis substantially in the center of said sphere 10.
  • a second axis BB perpendicular to the first axis AA and crossing the first axis substantially in the center of said sphere 10.
  • the sphere 10 is pivotally mounted along the first axis A-A, by means of bearings 12 arranged in a support 14 which defines a housing 16 within which the sphere 10 takes place.
  • the mechanism according to the invention comprises a first automatic drive kinematic chain, intended to rotate the sphere 10 around this first axis AA, substantially at a rate of rotation by lunation (ie 29.5 days or, more precisely 29,530,589 days).
  • this first drive train is arranged to drive the sphere 10, from a wheel of hours or a wheel twenty-four hours of a base movement, the gear ratios being determined so as to get the desired speed.
  • a display member 18 driven by the basic movement to display information relating to the current time.
  • the first automatic drive kinematic chain comprises a circular ring gear 20 surrounding the sphere 10.
  • the circular ring gear 20 includes a first toothing 20a to be driven by the base movement via a first mobile 22 disposed on a transmission shaft 24, and a second toothing 20b meshing with a pinion 26 that includes the sphere 10, this pinion 26 being mounted on a rod 27 oriented along the first axis AA.
  • the mechanism comprises a second driving kinematic chain, which can be either a manual drive typically in the case of adaptation to the latitude, or an automatic drive, in the case of an adaptation according to the time of day or a second time zone.
  • the second kinematic chain comprises a circular toothing 28 concentric with the circular toothed ring 20, this circular toothing 28 being arranged on the support 14.
  • the sphere 10 and the support 14 are integral in rotation about the second axis B-B.
  • a rotation of the sphere 10 along the first axis AA makes it possible to indicate the different moon phases
  • a rotation of the sphere 10 along the second axis BB makes it possible to modify the inclination of the representation. from the moon.
  • the mechanism according to the invention comprises a third manual drive kinematic chain for rotating the sphere 10 about the first axis.
  • the third manual drive kinematic chain is arranged to drive the circular ring gear 20 by means of a first manual control member.
  • the first control member is a control rod 30, capable of occupying several axial positions, one of which allows it, via one or more referrals 32, to actuate a wheel 34 mounted on the shaft 24.
  • the control rod 30 is, for example, provided with a sliding pinion 36, actuated by a pull tab system. In the figures, the sliding pinion 36 is not engaged with the return 32.
  • the skilled person may provide for a decoupling of the first kinematic chain and the third kinematic chain, in order to avoid disturbing the operation of the movement when a correction. It will thus be possible to interpose a friction between the base movement and the transmission shaft 24.
  • the decoupling may also make it possible to prevent any blockage during the driving of the sphere 10 by the movement if the control rod 30 is in position correction and that the sliding pinion 36 is engaged with the reference 32. It will thus be possible to provide connect the wheel 34 to the drive shaft 24 by means of a torque limiting or latching system, such as a resilient finger.
  • the second kinematic chain and the third manual drive chain are synchronized so as to rotate the sphere 10 only along the first axis AA, the support 14 remaining stationary during such a correction, or, as we will understand below, only according to the second axis BB.
  • the correction of the inclination of the moon is done manually.
  • this correction is done without affecting the indication of the moon phase, otherwise it would be necessary later and in addition, correct the indication of the moon phase. It is thus clear that it is not a matter of simply rotating the support 14 around the second axis BB, since the pinion 26 carried by the sphere 10 would then roll on the circular toothed ring 20, producing a rotation of the sphere 10 around of the first AA axis.
  • a first possibility could be to have a control member dedicated to the correction of the inclination of the sphere 10 and independent of the control member dedicated to the correction of the indication of the moon phase.
  • a control rod or a pusher may be arranged to actuate a two-stage mobile, one of which is engaged with the circular ring 20 and the other is engaged with the circular toothing 28 of the support 14, to drive them simultaneously and at the same speed.
  • the drive is only of the circular toothed ring 20, or of the circular toothed ring 20 and of the circular toothing 28 of the support 14, is made at the level of one and the same input mobile,
  • the second driveline comprises a second mobile 38 mounted freely on the transmission shaft 24, in engagement with the circular toothing 28 of the support 14.
  • the clutch system 40 is associated with the second drive train and the third manual drive train, so as to be in the engaged position when starting the second drive train, and in the disengaged position when starting the third manual drive train. This association is obtained, for example, by a lever 42 positioned according to the axial position of the control rod 30 actuating the third manual drive kinematic chain. The lever 42 brings the clutch system 40 into the disengaged position when the user brings the control rod 30 into the correction position.
  • the clutch system 40 may be, as proposed in the example, a vertical-type clutch, the second mobile 38 being able to move axially on the transmission shaft 24 to be integral in rotation or free with reference to the first 22.
  • This type of clutch is known to those skilled in the art and need not be described in detail.
  • a single input mobile it can be provided, in addition to the first control member associated with the third manual drive kinematic chain, a second control member associated with the second kinematic chain.
  • a second control member associated with the second kinematic chain.
  • the sliding pinion 36 is kinematically connected to the wheel 34 of the transmission shaft 24 and the clutch system 40 is in the engaged position, allowing the correction of the inclination of the representation of the moon.
  • the sliding pinion 36 remains kinematically connected to the wheel 34 of the transmission shaft 24 and the clutch system 40 is in the disengaged position, allowing the correction of the indication of the moon phase.
  • a three-dimensional moon phase mechanism to correct the inclination of the representation of the moon.
  • What has been described for driving the sphere 10 along the first axis AA can be easily transposed by those skilled in the art, to a drive of a mobile cover along the first axis AA, around a sphere 10 mounted fixed on the support 14.
  • the skilled person can also adapt the description above so as to have an automatic correction of the inclination of the representation of the moon, for example according to the time of day or a second time zone.
  • all combinations of pushers and crowns are possible.
  • a crown can be used for the correction of the moon phase while pushers can be used to correct the inclination (for example a push to turn in one direction and another push to turn in the other direction) or vice versa.

Abstract

The mechanism has a sphere (10) representing a moon and comprising two distinct hemispheres, where the sphere is mounted to pivot with reference to a support (14) along a first axis (A-A) of the sphere. A first kinematic drive chain rotates the sphere around the axis by rotation per lunation. The sphere is mounted to pivot along a second axis (B-B) perpendicular to the first axis and crossing the first axis at center of the sphere. A second kinematic drive chain rotates the sphere around the second axis to correct the inclination of the slope of the moon.

Description

Domaine techniqueTechnical area

La présente invention se rapporte au domaine de l'horlogerie. Elle concerne, plus particulièrement, un mécanisme de phases de lune comprenant :

  • une sphère représentant la lune et montée pivotante en référence à un support selon un premier axe, et
  • une chaîne cinématique d'entraînement automatique, destinée à faire tourner la sphère autour de ce premier axe, sensiblement à raison d'un tour par lunaison.
The present invention relates to the field of watchmaking. More particularly, it relates to a moon phase mechanism comprising:
  • a sphere representing the moon and pivotally mounted with reference to a support along a first axis, and
  • an automatic drive kinematic chain for rotating the sphere about this first axis substantially at a rate of one revolution per lunation.

Etat de la techniqueState of the art

Les mécanismes permettant l'affichage des phases de lune sont bien connus dans l'horlogerie. Généralement, ces affichages mettent en oeuvre des disques qui permettent, de manière simplifiée, de représenter les phases de la lune. On a également proposé, comme dans le document EP0566529 , d'afficher les phases de la lune au moyen d'une lune représentée par une sphère comportant deux moitiés de couleurs différentes. La sphère est montée pivotante autour d'un premier axe passant par le centre de la sphère et pivote également autour du centre du mouvement. Les mouvements combinés de la sphère permettent d'afficher les phases de lune.Mechanisms for displaying moon phases are well known in watchmaking. Generally, these displays implement disks that allow, in a simplified way, to represent the phases of the moon. It was also proposed, as in the document EP0566529 , to display the phases of the moon by means of a moon represented by a sphere with two halves of different colors. The sphere is pivotally mounted about a first axis passing through the center of the sphere and also pivots around the center of the movement. The combined movements of the sphere make it possible to display the moon phases.

On sait que, depuis la terre, la lune est vue différemment selon la latitude à laquelle un observateur se trouve ou selon les heures de la journée. Les marques horlogères proposent, le plus souvent, des montres affichant les phases de la lune vues depuis l'hémisphère sud ou depuis l'hémisphère nord, en donnant une représentation moyenne, correspondant sensiblement à ce qu'un observateur peut voir lorsqu'il est situé sur une latitude de 30°sud ou nord. La représentation offerte par une pièce d'horlogerie munie d'un affichage des phases de lune ne correspond donc pas, le plus souvent, à la réalité observée par le porteur de cette montre.It is known that from the earth the moon is seen differently according to the latitude at which an observer is or according to the hours of the day. The watch brands most often offer watches displaying the moon phases seen from the southern hemisphere or from the northern hemisphere, giving an average representation, corresponding substantially to what an observer can see when he is located on a latitude of 30 ° south or north. The representation offered by a timepiece provided with a display of moon phases does not correspond, therefore, most often to the reality observed by the wearer of this watch.

En outre, on connaît, de l'Horloge Astronomique de Prague, un affichage des phases de lune particulier. Son fonctionnement est décrit dans la publication « Astronomische Indikationen bei Uhren », Glaser G, Jahrbuch der deutschen Gesellschaft für Chronometrie, vol. 40, 1989, p. 140-141 . Cet affichage comprend une sphère représentative de la lune, supportée en glissement sur une première tige, qui est pivotée autour du centre de l'horloge. La sphère est liée par une deuxième tige à un second axe ne passant pas par la sphère, autour duquel la sphère tourne. Ce deuxième axe est mobile, et tourne lui-même autour du centre de l'horloge, auquel il est lié par une troisième tige. La sphère tourne en outre autour de son propre axe, parallèlement à la première tige, à raison d'un tour par lunaison grâce à l'effet de la gravité sur une masse située à l'intérieur de la sphère. Cette masse est solidaire de lames en forme de taraudage partiel qui interagissent avec 57 dents disposées autour du pourtour intérieur de la sphère afin de l'entraîner en rotation autour de son propre axe lors de la rotation de la première tige autour du centre de l'horloge. Ce mécanisme permet de présenter une représentation de la lune ne correspondant qu'à un seul endroit, et ne convient pas à une application portable, notamment à cause de l'utilisation de la force gravitationnelle pour une partie de l'entraînement de la sphère.In addition, there is known from the Prague Astronomical Clock a particular moon phase display. Its operation is described in the publication "Astronomische Indikationen bei Uhren", Glaser G, Jahrbuch der deutschen Gesellschaft für Chronometrie, vol. 40, 1989, p. 140-141 . This display comprises a sphere representative of the moon, slidably supported on a first rod, which is rotated around the center of the clock. The sphere is linked by a second rod to a second axis not passing through the sphere, around which the sphere rotates. This second axis is mobile, and turns itself around the center of the clock, to which it is linked by a third rod. The sphere rotates moreover around its own axis, parallel to the first stem, at the rate of one turn per lunation thanks to the effect of gravity on a mass situated inside the sphere. This mass is integral with blades in the form of partial tapping which interact with 57 teeth arranged around the inner periphery of the sphere to drive it in rotation about its own axis during the rotation of the first rod around the center of the clock. This mechanism makes it possible to present a representation of the moon corresponding to only one place, and is not suitable for a portable application, in particular because of the use of the gravitational force for part of the training of the sphere.

La présente invention a pour but de résoudre ce problème en permettant d'afficher les phases de lune dans une pièce d'horlogerie de manière plus réaliste, en tenant notamment compte de l'heure du jour ou de la latitude à laquelle le porteur de cette pièce d'horlogerie se trouve.The object of the present invention is to solve this problem by making it possible to display the moon phases in a timepiece more realistically, particularly taking into account the time of day or the latitude at which the wearer of this timepiece timepiece is located.

Divulgation de l'inventionDisclosure of the invention

De façon plus précise, l'invention concerne un mécanisme d'affichage des phases de la lune, comprenant :

  • une sphère représentant la lune, comportant deux hémisphères distincts et montée pivotante en référence à un support selon un premier axe,
  • une première chaîne cinématique d'entraînement automatique, destinée à faire tourner la sphère autour de ce premier axe, sensiblement à raison d'une rotation par lunaison.
More specifically, the invention relates to a mechanism for displaying the phases of the moon, comprising:
  • a sphere representing the moon, comprising two distinct hemispheres and pivotally mounted with reference to a support along a first axis,
  • a first automatic drive kinematic chain for rotating the sphere about this first axis substantially at a rotation by lunation.

Selon l'invention, la sphère est montée pivotante selon un deuxième axe perpendiculaire au premier axe et croisant le premier axe sensiblement au centre de ladite sphère. Le mécanisme comprend une deuxième chaîne cinématique d'entraînement, destinée à faire tourner la sphère autour du deuxième axe pour corriger l'inclinaison de la représentation de la lune.According to the invention, the sphere is pivotally mounted along a second axis perpendicular to the first axis and intersecting the first axis substantially in the center of said sphere. The mechanism includes a second driving kinematic chain for rotating the sphere about the second axis to correct the inclination of the moon representation.

D'autres caractéristiques avantageuses de l'invention sont proposées dans les revendications.Other advantageous features of the invention are proposed in the claims.

Brève description des dessinsBrief description of the drawings

D'autres détails de l'invention apparaîtront plus clairement à la lecture de la description qui suit, faite en référence aux figures annexées, dans lesquelles :

  • les figures 1 et 2 sont des représentations schématiques de l'invention, et
  • les figures 3 et 4 sont deux vues en perspective d'un mécanisme de phases de lune selon l'invention.
Other details of the invention will emerge more clearly on reading the description which follows, made with reference to the appended figures, in which:
  • the Figures 1 and 2 are schematic representations of the invention, and
  • the figures 3 and 4 are two perspective views of a moon phase mechanism according to the invention.

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

On peut voir sur les figures illustrant un mode de réalisation particulier d'un mécanisme de phases de lune selon l'invention, une sphère 10 représentant la lune. Cette sphère 10 comporte deux hémisphères distincts afin de figurer la face de la lune éclairée par le soleil et la face située dans l'ombre. Ces deux hémisphères peuvent être obtenus soit en réalisant la sphère 10 sous forme de deux moitiés de couleur distincte, comme dans l'exemple proposé, soit en recouvrant la sphère 10 d'un cache hémisphérique de couleur distincte.One can see in the figures illustrating a particular embodiment of a moon phase mechanism according to the invention, a sphere 10 representing the moon. This sphere 10 has two distinct hemispheres to represent the face of the moon illuminated by the sun and the face in the shadow. These two hemispheres can be obtained either by making the sphere 10 in the form of two halves of a distinct color, as in the example provided, or by covering the sphere 10 with a hemispherical mask of a distinct color.

Comme on le schématise sur les figures 1 et 2, le but de la présente invention est de faire pivoter la sphère 10 selon un premier axe A-A, de manière à afficher les phases de la lune au cours d'un cycle lunaire, tout en permettant de faire pivoter la sphère 10 selon un deuxième axe B-B perpendiculaire au premier axe A-A et croisant le premier axe sensiblement au centre de ladite sphère 10. En faisant pivoter la sphère 10 selon ce deuxième axe B-B, on peut corriger l'inclinaison de la représentation de la lune, afin de l'adapter, par exemple en fonction de la latitude ou en fonction de l'heure du jour ou encore en fonction d'un second fuseau horaire. Ainsi, les figures 1 et 2 proposent deux positions dans lesquelles la phase de lune est la même, mais avec une inclinaison différente de la lune.As we schematize it on Figures 1 and 2 the object of the present invention is to rotate the sphere 10 along a first axis AA, so as to display the phases of the moon during a lunar cycle, while allowing to rotate the sphere 10 along a second axis BB perpendicular to the first axis AA and crossing the first axis substantially in the center of said sphere 10. By rotating the sphere 10 along the second axis BB, we can correct the inclination of the representation of the moon, in order to adapt it, for example according to the latitude or according to the time of day or according to a second time zone. Thus, Figures 1 and 2 propose two positions in which the moon phase is the same, but with a different inclination of the moon.

Plus précisément, la sphère 10 est montée pivotante selon le premier axe A-A, au moyen de paliers 12 agencés dans un support 14 qui définit un logement 16 à l'intérieur duquel prend place la sphère 10.More specifically, the sphere 10 is pivotally mounted along the first axis A-A, by means of bearings 12 arranged in a support 14 which defines a housing 16 within which the sphere 10 takes place.

Pour l'entraînement de la sphère 10 autour du premier axe A-A, le mécanisme selon l'invention comprend une première chaîne cinématique d'entraînement automatique, destinée à faire tourner la sphère 10 autour de ce premier axe A-A, sensiblement à raison d'une rotation par lunaison (soit 29,5 jours ou, plus précisément 29,530589 jours). Typiquement, cette première chaîne cinématique est agencée de manière à entraîner la sphère 10, à partir d'une roue des heures ou d'une roue vingt-quatre heures d'un mouvement de base, les rapports d'engrenage étant déterminés de manière à obtenir la vitesse souhaitée. On a représenté symboliquement sur la figure 4, un organe d'affichage 18 entraîné par le mouvement de base pour afficher une information relative au temps courant.For driving the sphere 10 about the first axis AA, the mechanism according to the invention comprises a first automatic drive kinematic chain, intended to rotate the sphere 10 around this first axis AA, substantially at a rate of rotation by lunation (ie 29.5 days or, more precisely 29,530,589 days). Typically, this first drive train is arranged to drive the sphere 10, from a wheel of hours or a wheel twenty-four hours of a base movement, the gear ratios being determined so as to get the desired speed. Symbolically represented on the figure 4 , a display member 18 driven by the basic movement to display information relating to the current time.

Dans un mode de réalisation préféré et illustré sur les dessins, la première chaîne cinématique d'entraînement automatique comprend une bague dentée circulaire 20 entourant la sphère 10. La bague dentée circulaire 20 comprend une première denture 20a pour être entraînée par le mouvement de base via un premier mobile 22 disposé sur un arbre de transmission 24, et une deuxième denture 20b engrenant avec un pignon 26 que comporte la sphère 10, ce pignon 26 étant monté sur un tigeron 27 orienté selon le premier axe A-A.In a preferred embodiment and illustrated in the drawings, the first automatic drive kinematic chain comprises a circular ring gear 20 surrounding the sphere 10. The circular ring gear 20 includes a first toothing 20a to be driven by the base movement via a first mobile 22 disposed on a transmission shaft 24, and a second toothing 20b meshing with a pinion 26 that includes the sphere 10, this pinion 26 being mounted on a rod 27 oriented along the first axis AA.

Pour entraîner la sphère 10 selon le deuxième axe B-B, le mécanisme comprend une deuxième chaîne cinématique d'entraînement, qui peut être soit un entraînement manuel typiquement dans le cas d'une adaptation à la latitude, ou un entraînement automatique, dans le cas d'une adaptation en fonction de l'heure du jour ou d'un second fuseau horaire.To drive the sphere 10 along the second axis BB, the mechanism comprises a second driving kinematic chain, which can be either a manual drive typically in the case of adaptation to the latitude, or an automatic drive, in the case of an adaptation according to the time of day or a second time zone.

La deuxième chaîne cinématique comprend une denture circulaire 28 concentrique à la bague dentée circulaire 20, cette denture circulaire 28 étant agencée sur le support 14. Ainsi, la sphère 10 et le support 14 sont solidaires en rotation autour du deuxième axe B-B.The second kinematic chain comprises a circular toothing 28 concentric with the circular toothed ring 20, this circular toothing 28 being arranged on the support 14. Thus, the sphere 10 and the support 14 are integral in rotation about the second axis B-B.

Pour l'entraînement de la denture circulaire 28, l'exemple illustré propose un entraînement manuel qui sera détaillé ci-après.For the drive of the circular toothing 28, the illustrated example proposes a manual drive which will be detailed below.

Ainsi, on comprend qu'une rotation de la sphère 10 selon le premier axe A-A permet d'indiquer les différentes phases de lune, tandis qu'une rotation de la sphère 10 selon le deuxième axe B-B permet de modifier l'inclinaison de la représentation de la lune.Thus, it is understood that a rotation of the sphere 10 along the first axis AA makes it possible to indicate the different moon phases, while a rotation of the sphere 10 along the second axis BB makes it possible to modify the inclination of the representation. from the moon.

Pour effectuer une correction de l'indication de la phase de la lune, le mécanisme selon l'invention comprend une troisième chaîne cinématique d'entraînement manuel, destinée à faire tourner la sphère 10 autour du premier axe.In order to effect a correction of the indication of the moon phase, the mechanism according to the invention comprises a third manual drive kinematic chain for rotating the sphere 10 about the first axis.

La troisième chaîne cinématique d'entraînement manuel est agencée pour entraîner la bague dentée circulaire 20 au moyen d'un premier organe de commande manuel. Typiquement, le premier organe de commande est une tige de commande 30, susceptible d'occuper plusieurs positions axiales, dont l'une d'elle lui permet, via un ou plusieurs renvois 32, d'actionner une roue 34 monté sur l'arbre de transmission 24. La tige de commande 30 est, par exemple, dotée d'un pignon coulant 36, actionné par un système de tirette. Sur les figures, le pignon coulant 36 n'est pas en prise avec le renvoi 32.The third manual drive kinematic chain is arranged to drive the circular ring gear 20 by means of a first manual control member. Typically, the first control member is a control rod 30, capable of occupying several axial positions, one of which allows it, via one or more referrals 32, to actuate a wheel 34 mounted on the shaft 24. The control rod 30 is, for example, provided with a sliding pinion 36, actuated by a pull tab system. In the figures, the sliding pinion 36 is not engaged with the return 32.

Par sécurité et pour éviter toute contrainte excessive dans les différents mobiles du mécanisme, l'homme du métier pourra prévoir un découplage de la première chaîne cinématique et de la troisième chaîne cinématique, ceci afin d'éviter de perturber le fonctionnement du mouvement lors d'une correction. On pourra ainsi intercaler une friction entre le mouvement de base et l'arbre de transmission 24. Le découplage peut aussi permettre d'éviter tout blocage lors de l'entraînement de la sphère 10 par le mouvement si la tige de commande 30 est en position de correction et que le pignon coulant 36 est en prise avec le renvoi 32. On pourra ainsi prévoir de connecter la roue 34 à l'arbre de transmission 24 au moyen d'un système de limitation de couple ou d'encliquetage, tel qu'un doigt élastique.For safety reasons and to avoid any excessive stress in the various moving parts of the mechanism, the skilled person may provide for a decoupling of the first kinematic chain and the third kinematic chain, in order to avoid disturbing the operation of the movement when a correction. It will thus be possible to interpose a friction between the base movement and the transmission shaft 24. The decoupling may also make it possible to prevent any blockage during the driving of the sphere 10 by the movement if the control rod 30 is in position correction and that the sliding pinion 36 is engaged with the reference 32. It will thus be possible to provide connect the wheel 34 to the drive shaft 24 by means of a torque limiting or latching system, such as a resilient finger.

Ainsi, la deuxième chaîne cinématique et la troisième chaîne cinématique d'entraînement manuel sont synchronisées de manière à faire pivoter la sphère 10 uniquement selon le premier axe A-A, le support 14 restant immobile lors d'une telle correction, ou, comme on va le comprendre ci-après, uniquement selon le deuxième axe B-B.Thus, the second kinematic chain and the third manual drive chain are synchronized so as to rotate the sphere 10 only along the first axis AA, the support 14 remaining stationary during such a correction, or, as we will understand below, only according to the second axis BB.

Dans le mode de réalisation illustré, la correction de l'inclinaison de la lune est faite manuellement. De préférence, cette correction se fait sans incidence sur l'indication de la phase de lune, sans quoi il faudrait ultérieurement et au surplus, corriger l'indication de la phase de lune. On comprend donc qu'il ne s'agit pas simplement de faire tourner le support 14 autour du deuxième axe B-B, car le pignon 26 porté par la sphère 10 roulerait alors sur la bague dentée circulaire 20, produisant une rotation de la sphère 10 autour du premier axe A-A.In the illustrated embodiment, the correction of the inclination of the moon is done manually. Preferably, this correction is done without affecting the indication of the moon phase, otherwise it would be necessary later and in addition, correct the indication of the moon phase. It is thus clear that it is not a matter of simply rotating the support 14 around the second axis BB, since the pinion 26 carried by the sphere 10 would then roll on the circular toothed ring 20, producing a rotation of the sphere 10 around of the first AA axis.

Ainsi, il faut actionner simultanément et à la même vitesse, la bague dentée circulaire 20 et le support 14, afin de n'avoir pas de déplacement relatif entre l'une et l'autre.Thus, it is necessary to operate simultaneously and at the same speed, the circular toothed ring 20 and the support 14, in order to have no relative movement between one and the other.

Une première possibilité, non représentée, pourrait être d'avoir un organe de commande dédié à la correction de l'inclinaison de la sphère 10 et indépendant de l'organe de commande dédié à la correction de l'indication de la phase de lune. Pour la correction de l'inclinaison de la sphère 10, une tige de commande ou un poussoir peuvent être agencés de manière à actionner un mobile à deux étages, dont l'un est en prise avec la bague dentée circulaire 20 et dont l'autre est en prise avec la denture circulaire 28 du support 14, pour les entraîner simultanément et à la même vitesse.A first possibility, not shown, could be to have a control member dedicated to the correction of the inclination of the sphere 10 and independent of the control member dedicated to the correction of the indication of the moon phase. For the correction of the inclination of the sphere 10, a control rod or a pusher may be arranged to actuate a two-stage mobile, one of which is engaged with the circular ring 20 and the other is engaged with the circular toothing 28 of the support 14, to drive them simultaneously and at the same speed.

Dans la variante proposée, l'entraînement soit uniquement de la bague dentée circulaire 20, soit de la bague dentée circulaire 20 et de la denture circulaire 28 du support 14, se fait au niveau d'un même mobile d'entrée, en l'occurrence au niveau de l'arbre de transmission 24. La deuxième chaîne cinématique comprend un deuxième mobile 38 monté libre sur l'arbre de transmission 24, en prise avec la denture circulaire 28 du support 14.In the variant proposed, the drive is only of the circular toothed ring 20, or of the circular toothed ring 20 and of the circular toothing 28 of the support 14, is made at the level of one and the same input mobile, The second driveline comprises a second mobile 38 mounted freely on the transmission shaft 24, in engagement with the circular toothing 28 of the support 14.

Le mécanisme comprend un système d'embrayage 40 susceptible d'évoluer entre :

  • une position débrayée, dans laquelle le premier mobile 22 et le deuxième mobile 38 sont indépendants en rotation, de sorte que, via la troisième chaîne cinématique d'entraînement manuel, seul le premier mobile 22 est entraîné, permettant de procéder à la correction de l'indication de la phase de lune, et
  • une position embrayée, dans laquelle le premier mobile 22 et le deuxième mobile 38 sont solidaires en rotation afin d'entraîner simultanément et à la même vitesse, via la deuxième chaîne cinématique d'entraînement et la troisième chaîne cinématique d'entraînement manuel, la bague dentée circulaire 20 et de la denture circulaire 28 du support 14.
The mechanism comprises a clutch system 40 capable of changing between:
  • a disengaged position, in which the first mobile 22 and the second mobile 38 are independent in rotation, so that, via the third manual drive train, only the first mobile 22 is driven, to proceed to the correction of the indication of the moon phase, and
  • an engaged position, in which the first mobile 22 and the second mobile 38 are rotationally fixed in order to drive simultaneously and at the same speed, via the second driving kinematic chain and the third manual drive kinematic chain, the ring circular tooth 20 and the circular toothing 28 of the support 14.

Le système d'embrayage 40 est associé à la deuxième chaîne cinématique d'entraînement et à la troisième chaîne cinématique d'entraînement manuel, de manière à être en position embrayée lors de la mise en train de la deuxième chaîne cinématique d'entraînement, et en position débrayée lors de la mise en train de la troisième chaîne cinématique d'entraînement manuel. Cette association est obtenue, par exemple, par un levier 42 positionné en fonction de la position axiale de la tige de commande 30 actionnant la troisième chaîne cinématique d'entraînement manuel. Le levier 42 amène le système d'embrayage 40 en position débrayée lorsque l'utilisateur amène la tige de commande 30 en position de correction.The clutch system 40 is associated with the second drive train and the third manual drive train, so as to be in the engaged position when starting the second drive train, and in the disengaged position when starting the third manual drive train. This association is obtained, for example, by a lever 42 positioned according to the axial position of the control rod 30 actuating the third manual drive kinematic chain. The lever 42 brings the clutch system 40 into the disengaged position when the user brings the control rod 30 into the correction position.

Le système d'embrayage 40 peut être, comme proposé dans l'exemple, un embrayage de type vertical, le deuxième mobile 38 étant susceptible de se déplacer axialement sur l'arbre de transmission 24 pour être solidaire en rotation ou libre en référence au premier mobile 22. Ce type d'embrayage est connu de l'homme du métier et n'a pas besoin d'être décrit en détail.The clutch system 40 may be, as proposed in the example, a vertical-type clutch, the second mobile 38 being able to move axially on the transmission shaft 24 to be integral in rotation or free with reference to the first 22. This type of clutch is known to those skilled in the art and need not be described in detail.

Dans le cas d'un mobile d'entrée unique, on peut prévoir, outre le premier organe de commande associé à la troisième chaîne cinématique d'entraînement manuel, un deuxième organe de commande associé à la deuxième chaîne cinématique. On peut également entraîner l'arbre de transmission 24 uniquement par le premier organe de commande agencé pour actionner la roue 34. Ainsi, dans l'exemple, c'est la même tige de commande 30 qui permet de corriger l'inclinaison de la représentation de la lune et l'indication de la phase de lune.In the case of a single input mobile, it can be provided, in addition to the first control member associated with the third manual drive kinematic chain, a second control member associated with the second kinematic chain. We can also train the tree of transmission 24 only by the first control member arranged to actuate the wheel 34. Thus, in the example, it is the same control rod 30 that corrects the inclination of the representation of the moon and the indication of the moon phase.

Par exemple, dans une première position axiale de la tige de commande 30, celle-ci n'a pas d'action sur le mécanisme de phases de lune. Dans une deuxième position axiale, le pignon coulant 36 est relié cinématiquement à la roue 34 de l'arbre de transmission 24 et le système d'embrayage 40 est en position embrayée, permettant la correction de l'inclinaison de la représentation de la lune. Dans une troisième position axiale, le pignon coulant 36 demeure relié cinématiquement à la roue 34 de l'arbre de transmission 24 et le système d'embrayage 40 est en position débrayée, permettant la correction de l'indication de la phase de lune.For example, in a first axial position of the control rod 30, it has no action on the moon phase mechanism. In a second axial position, the sliding pinion 36 is kinematically connected to the wheel 34 of the transmission shaft 24 and the clutch system 40 is in the engaged position, allowing the correction of the inclination of the representation of the moon. In a third axial position, the sliding pinion 36 remains kinematically connected to the wheel 34 of the transmission shaft 24 and the clutch system 40 is in the disengaged position, allowing the correction of the indication of the moon phase.

Ainsi est proposé un mécanisme de phase de lune tridimensionnel, permettant de corriger l'inclinaison de la représentation de la lune. Ce qui a été décrit pour l'entraînement de la sphère 10 selon le premier axe A-A peut être transposé aisément par l'homme du métier, à un entraînement d'un cache mobile selon le premier axe A-A, autour d'une sphère 10 montée fixe sur le support 14. L'homme du métier pourra également adapter la description ci-dessus de manière à avoir une correction automatique de l'inclinaison de la représentation de la lune, par exemple en fonction de l'heure du jour ou d'un deuxième fuseau horaire. De même, pour les organes de commande proposés pour commander les deuxième et troisième chaînes cinématiques, toutes les combinaisons de poussoirs et de couronnes sont possibles. Une couronne peut servir pour la correction de la phase de lune alors que des poussoirs peuvent servir pour corriger l'inclinaison (par exemple un poussoir pour tourner dans un sens et un autre poussoir pour tourner dans l'autre sens) ou inversement.Thus is proposed a three-dimensional moon phase mechanism, to correct the inclination of the representation of the moon. What has been described for driving the sphere 10 along the first axis AA can be easily transposed by those skilled in the art, to a drive of a mobile cover along the first axis AA, around a sphere 10 mounted fixed on the support 14. The skilled person can also adapt the description above so as to have an automatic correction of the inclination of the representation of the moon, for example according to the time of day or a second time zone. Similarly, for the control members proposed to control the second and third drivelines, all combinations of pushers and crowns are possible. A crown can be used for the correction of the moon phase while pushers can be used to correct the inclination (for example a push to turn in one direction and another push to turn in the other direction) or vice versa.

Claims (12)

Mécanisme de phases de lune comprenant - une sphère (10) représentant la lune, comportant deux hémisphères distincts et montée pivotante en référence à un support (14) selon un premier axe, - une première chaîne cinématique d'entraînement automatique, destinée à faire tourner la sphère (10) autour de ce premier axe, sensiblement à raison d'une rotation par lunaison, caractérisé en ce que ladite sphère (10) est montée pivotante selon un deuxième axe perpendiculaire au premier axe et croisant le premier axe sensiblement au centre de ladite sphère (10), ledit mécanisme comprenant une deuxième chaîne cinématique d'entraînement, destinée à faire tourner la sphère (10) autour du deuxième axe pour corriger l'inclinaison de la représentation de la lune.Moon phase mechanism including a sphere (10) representing the moon, comprising two distinct hemispheres and pivotally mounted with reference to a support (14) along a first axis, a first automatic drive kinematic chain, intended to rotate the sphere (10) around this first axis, substantially at the rate of a rotation by lunation, characterized in that said sphere (10) is pivotally mounted along a second axis perpendicular to the first axis and intersecting the first axis substantially in the center of said sphere (10), said mechanism comprising a second driving kinematic chain, intended to rotate the sphere (10) around the second axis to correct the inclination of the representation of the moon. Mécanisme de phases de lune selon la revendication 1, caractérisé en ce qu'il comprend une troisième chaîne cinématique d'entraînement manuel, destinée à faire tourner la sphère (10) autour du premier axe pour corriger l'indication de la phase de lune.Moon phase mechanism according to claim 1, characterized in that it comprises a third manual drive kinematic chain for rotating the sphere (10) about the first axis to correct the indication of the moon phase. Mécanisme de phases de lune selon l'une des revendications 1 et 2, caractérisé en ce que la sphère (10) et le support (14) sont solidaires en rotation autour du deuxième axe.Moon phase mechanism according to one of claims 1 and 2, characterized in that the sphere (10) and the support (14) are integral in rotation about the second axis. Mécanisme de phases de lune selon l'une des revendications 2 et 3, caractérisé en ce que la deuxième chaîne cinématique et la troisième chaîne cinématique d'entraînement manuel sont synchronisés de manière à faire pivoter la sphère (10) uniquement selon le premier ou le deuxième axe.Moon phase mechanism according to one of claims 2 and 3, characterized in that the second kinematic chain and the third manual drive chain are synchronized to rotate the sphere (10) only in accordance with the first or the second second axis. Mécanisme de phases de lune selon la revendication 4, caractérisé en ce qu'il comprend un système d'embrayage (40) permettant de synchroniser la deuxième chaîne cinématique d'entraînement et la troisième chaîne cinématique d'entraînement manuel.Moon phase mechanism according to claim 4, characterized in that it comprises a clutch system (40) for synchronizing the second drive train and the third manual drive train. Mécanisme de phases de lune selon l'une des revendications précédentes, caractérisé en ce que la première chaîne cinématique d'entraînement automatique comprend une bague dentée circulaire (20) concentrique au deuxième axe et entourant ladite sphère (10), cette dernière comprenant un pignon (26) monté sur un tigeron (27) orienté selon le premier axe et engrenant avec ladite bague dentée circulaire (20).Moon phase mechanism according to one of the preceding claims, characterized in that the first automatic drive kinematic chain comprises a circular toothed ring (20) concentric with the second axis and surrounding said sphere (10), the latter comprising a pinion (26) mounted on a spindle (27) oriented along the first axis and meshing with said circular toothed ring (20). Mécanisme de phases de lune selon la revendication 6 en combinaison avec la revendication 2, caractérisé en ce que la troisième chaîne cinématique d'entraînement manuel est agencée pour entraîner ladite bague dentée circulaire (20) au moyen d'un premier organe de commande manuel.A moon phase mechanism according to claim 6 in combination with claim 2, characterized in that the third manual drive train is arranged to drive said circular ring gear (20) by means of a first manual control member. Mécanisme de phases de lune selon l'une des revendications 6 et 7, caractérisé en ce que le support (14) comprend une denture circulaire (28) concentrique à ladite bague dentée circulaire (20).Moon phase mechanism according to one of claims 6 and 7, characterized in that the support (14) comprises a circular toothing (28) concentric with said circular toothed ring (20). Mécanisme de phases de lune selon les revendications 7 et 8, caractérisé en ce que la deuxième chaîne cinématique d'entraînement est agencée pour entraîner la denture circulaire (28) au moyen dudit premier organe de commande manuel ou d'un deuxième organe de commande manuel.Moon phases mechanism according to claims 7 and 8, characterized in that the second drive train is arranged to drive the circular toothing (28) by said first manual control member and a second manual control member . Mécanisme de phases de lune selon la revendication 5 et la revendication 9, caractérisé en ce que le système d'embrayage (40) est susceptible d'évoluer entre - une position débrayée, dans laquelle l'organe de commande manuel entraîne uniquement la troisième chaîne cinématique d'entraînement manuel, et - une position embrayée dans laquelle l'organe de commande manuel entraîne simultanément la deuxième chaîne cinématique d'entraînement et la troisième chaîne cinématique d'entraînement manuel. Moon phase mechanism according to claim 5 and claim 9, characterized in that the clutch system (40) is capable of changing between a disengaged position, in which the manual control member only drives the third manual drive train, and an engaged position in which the manual control member simultaneously drives the second drive train drive and the third manual drive train. Mécanisme de phases de lune selon la revendication 10, dans lequel l'organe de commande est une tige de commande (30) susceptible d'occuper au moins deux positions axiales, caractérisé en ce que ledit organe de commande est connecté au système d'embrayage (40) de manière à ce que le système d'embrayage (40) est en position débrayée lorsque la tige de commande (30) est dans une première position axiale et le système d'embrayage (40) est en position embrayée lorsque la tige de commande est dans une deuxième position axiale.Moon phase mechanism according to claim 10, wherein the control member is a control rod (30) capable of occupying at least two axial positions, characterized in that said control member is connected to the clutch system (40) so that the clutch system (40) is in the disengaged position when the control rod (30) is in a first axial position and the clutch system (40) is in the engaged position when the rod control is in a second axial position. Mécanisme de phases de lune selon l'une des revendications 2 à 11, caractérisé en ce qu'il comprend un découplage de la première chaîne cinématique et de la troisième chaîne cinématique.Moon phase mechanism according to one of claims 2 to 11, characterized in that it comprises a decoupling of the first kinematic chain and the third kinematic chain.
EP20130175337 2012-07-17 2013-07-05 Moon phase mechanism Active EP2687918B1 (en)

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CH01087/12A CH706748B1 (en) 2012-07-17 2012-07-17 Mechanism for displaying moon phases.

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