EP3379343A1 - Device for displaying the phases of the moon - Google Patents

Device for displaying the phases of the moon Download PDF

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Publication number
EP3379343A1
EP3379343A1 EP17161916.6A EP17161916A EP3379343A1 EP 3379343 A1 EP3379343 A1 EP 3379343A1 EP 17161916 A EP17161916 A EP 17161916A EP 3379343 A1 EP3379343 A1 EP 3379343A1
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EP
European Patent Office
Prior art keywords
display device
moon
rotation
moon indicator
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17161916.6A
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German (de)
French (fr)
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EP3379343B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Blancpain SA
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Blancpain SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Blancpain SA filed Critical Blancpain SA
Priority to EP17161916.6A priority Critical patent/EP3379343B1/en
Priority to US15/888,204 priority patent/US10520892B2/en
Priority to JP2018029447A priority patent/JP6484735B2/en
Priority to CN201810203383.0A priority patent/CN108628144B/en
Priority to KR1020180031506A priority patent/KR102067889B1/en
Priority to RU2018109465A priority patent/RU2688040C1/en
Publication of EP3379343A1 publication Critical patent/EP3379343A1/en
Application granted granted Critical
Publication of EP3379343B1 publication Critical patent/EP3379343B1/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
    • 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
    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • 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
    • G04B19/04—Hands; Discs with a single mark or the like
    • G04B19/046—Indicating by means of a disc with a mark or window

Definitions

  • the invention relates to a device for displaying the current lunar phase visible at a given point on the earth's surface.
  • the document EP2392976 discloses a device comprising a moon disk and a dial having a substantially semicircular shaped aperture.
  • the moon disk is rotated to display the indications on the moon disk through the window to indicate the phases of the moon.
  • This mechanism comprises a first occulting disk rotatably housed between the moon disk and the dial, and a drive train driving the first occulting disk so that the indications on the moon disk are obscured. at least partially during certain phases of the operation of the mechanism so that the indications appearing through the window correspond to the natural appearance of the moon throughout the duration of a lunation.
  • the document CH706094 for its part describes a moon phase display device comprising a dial having an axis, a moon indicator, a cover positioned to hide more or less the moon indicator and first rotating drive means of the moon. moon indicator arranged to move the moon indicator in rotation.
  • the invention aims to overcome the drawbacks of the state of the art by providing a device for displaying moon phases simpler and less bulky in thickness than those of the prior art.
  • the moon indicator disc will therefore perform four cycloidal trajectories when it performs a complete turn of the display device. During each cycloidal trajectory, the moon indicator disc leaves a position in which it is completely hidden by a lobe. This position represents the new moon. The moon indicator disc will then gradually discover, until it reaches half of the cycloidal trajectory. When it reaches half of the cycloidal trajectory, it is no longer camouflaged by any lobe, so it represents the full moon. The disc will then progress on the cycloidal trajectory, and be more and more hidden by the next lobe until it is completely hidden again.
  • the display device may also have one or more of the following features taken individually or in any technically possible combination.
  • the cycloidal trajectory of the moon indicator disc is thus obtained thanks to a double rotational movement: the arm makes a first rotational movement about the first axis of rotation, while the moon indicator disk performs a second rotational movement around the second axis of rotation. axis of rotation passing through one end of the arm.
  • each lobe has a round shape of diameter equal to that of the moon indicator disc, so that said lobe completely camouflage the moon indicator disc when it is behind him, but that at the same time, the disc begins to discover immediately when its center is offset from the center of the lobe.
  • the cover and the moon indicator disc are dimensioned so that there is a position between two successive lobes in which the moon indicator disc is simultaneously tangential to the two successive lobes. This position corresponds to the full moon.
  • each ring portion has a shape of an arc of a circle.
  • the display device further comprises transmission means arranged to rotate the arm about the first axis of rotation.
  • the transmission means are configured so that the arm performs a complete revolution around the first axis of rotation in four lunar months.
  • a second aspect of the invention relates to a watch component comprising a display device according to the first aspect of the invention.
  • the annular cover is a dial of the watch part.
  • the transmission means are connected to the watch movement of the watch part.
  • the timepiece comprises needles, the dial being disposed between the hands and the moon indicator disc.
  • a display device 1 and a watch comprising such a display device will now be described with reference to the figures 1 and 2 .
  • the display device 1 comprises a cover 2.
  • This cover 2 is annular.
  • the annular cover 2 has a symmetry of revolution with respect to its center 9.
  • the cover 2 comprises four ring portions 3. Two successive ring portions 3 are separated by a convex lobe 4 radially projecting towards the inside of the cover 2.
  • the lobes 4 are preferably evenly distributed on the periphery of the cover 2, so that the ring portions 3 all have the same length.
  • the cover 2 preferably forms the dial of a watch as represented on the figure 2 .
  • the lobes 4 are preferably arranged at 3h, 6h, 9h and 12h.
  • the cover 2 preferably has indexes 5. Each index 5 is preferably aligned with a lobe 4 as shown in FIG. figure 2 .
  • the display device also includes a disk 6 representing the moon.
  • This disc 6 is also called “moon indicator disc” in this document. This disc 6 makes it possible to represent the phases of the moon during four lunar months by moving behind the cover 2. It is preferably provided with a pattern representing the visible face of the moon.
  • the display device comprises drive means arranged to animate the disc 6 of a cycloidal movement 19 between the centers 20 of two successive lobes 4.
  • These drive means preferably comprise a ring 7 provided with an internal toothing 8.
  • the ring 7 has an annular geometry around a central point 10 superimposed with the center 9 of the annular cover 2.
  • the drive means also comprise a pinion 11 provided with an external toothing 12 meshing with the internal toothing 8 of the crown 7.
  • the drive means also comprise an arm 12.
  • the arm 12 has a first end 13 arranged to be rotatable about a first axis of rotation 14 passing through the center of the annular cover 2.
  • the arm 12 also comprises a second end 15 fixed to the pinion 11 so as to be rotatable relative to a second axis of rotation 16.
  • the second axis of rotation 16 passes through the center of the pinion 11 and it passes through the second end 15 of the arm.
  • the disc 6 representing the moon is fixed so that its center is also rotated about the second axis of rotation 16.
  • the disc 6 is preferably fixed on the pinion 11. More precisely, the center 17 of the disc 6 is preferably attached to an eccentric point of the pinion 11. The center of the disc 6 and the center of the pinion 11 are offset with respect to each other.
  • the arm 12 When the arm 12 is rotated about the first axis of rotation 14, it rotates the pinion 11 which rotates about the second axis of rotation 16 by meshing with the internal toothing 8 of the crown 7. The disc 6 is then also rotated about the second axis of rotation 16. As the second axis of rotation 16 rotates around the first axis of rotation 14, the center of the disk 6 makes a cycloidal trajectory 19. Each cycloidal trajectory 19 extends from center 20 of a lobe 4 at the center 20 of the next lobe 4. When the arm 12 performs a complete revolution around the first axis of rotation 14, the disk 6 thus performs four cycloidal paths 19 as shown in FIG. figure 1 .
  • each cycloidal trajectory 19 the disc 6 is entirely hidden behind a first lobe 4. This position represents the new moon. The further the disk 6 advances on each cycloidal trajectory, the more it will be discovered, until it reaches the middle of the cycloidal trajectory 19. In the middle of each cycloidal trajectory, as shown in FIG. figure 2 , disc 6 is fully discovered. In this position, the disc 6 is preferably tangent to the two lobes 4 surrounding it. This position represents the full moon.
  • the disk 6 will then again progressively be hidden by the next lobe 4, until reaching again a position in which it is completely hidden by this new lobe.
  • the rotational speed of the arm 12 about the first axis of rotation 14 is chosen so that the disk 6 completely traverses each cycloidal trajectory 19 in a lunar month.
  • the arm 12 is preferably rotated by the watchmaking movement of the watchmaking component.
  • the first axis of rotation 14 is preferably coincident with the axis of rotation of the hands 18 of the watch.

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

Abstract

L'invention se rapporte à un dispositif d'affichage (1) de phases lunaires comportant :
- un cache (2) annulaire comportant quatre portions d'anneau (3), deux portions d'anneau (3) successives étant séparées par un lobe (4) convexe en saillie radiale vers l'intérieur du cache (2) annulaire ;
- un disque indicateur de lune (6),
- des moyens d'entraînement agencés pour animer le disque indicateur de lune (6) de façon à ce qu'il effectue une trajectoire cycloïdale entre deux lobes (4) successifs, le disque indicateur de lune (6) étant occulté au moins partiellement par chacun des deux lobes (4) pendant une partie de la trajectoire cycloïdale de façon à reproduire les phases lunaires pendant un mois lunaire.

Figure imgaf001
The invention relates to a device for displaying (1) lunar phases comprising:
- An annular cover (2) comprising four ring portions (3), two successive ring portions (3) being separated by a convex lobe (4) radially projecting towards the inside of the annular cover (2);
a moon indicator disc (6),
- Driving means arranged to animate the moon indicator disk (6) so that it performs a cycloidal trajectory between two successive lobes (4), the moon indicator disc (6) being at least partially obscured by each of the two lobes (4) during part of the cycloidal trajectory so as to reproduce the lunar phases during a lunar month.
Figure imgaf001

Description

Domaine de l'inventionField of the invention

L'invention se rapporte à un dispositif d'affichage de la phase lunaire actuelle visible en un point déterminé de la surface terrestre.The invention relates to a device for displaying the current lunar phase visible at a given point on the earth's surface.

Arrière-plan de l'inventionBackground of the invention

Il existe dans l'art antérieur de nombreux dispositifs d'affichage de la phase lunaire, en particulier intégrés dans des montres.In the prior art, there are numerous devices for displaying the lunar phase, in particular integrated in watches.

A titre d'exemple, le document EP2392976 décrit un dispositif comprenant un disque de lune et un cadran comportant un guichet de forme sensiblement semi-circulaire. Le disque de lune est entraîné en rotation de façon à afficher les indications inscrites sur le disque de lune à travers le guichet pour indiquer les phases de la lune. Ce mécanisme comprend un premier disque d'occultation logé de manière rotative entre le disque de lune et le cadran, et un rouage d'entraînement entraînant le premier disque d'occultation de façon à ce que les indications inscrites sur le disque de lune soient occultées au moins partiellement lors de certaines phases du fonctionnement du mécanisme de manière à ce que les indications apparaissant à travers le guichet correspondent à l'aspect naturel de la lune pendant toute la durée de lunaison.For example, the document EP2392976 discloses a device comprising a moon disk and a dial having a substantially semicircular shaped aperture. The moon disk is rotated to display the indications on the moon disk through the window to indicate the phases of the moon. This mechanism comprises a first occulting disk rotatably housed between the moon disk and the dial, and a drive train driving the first occulting disk so that the indications on the moon disk are obscured. at least partially during certain phases of the operation of the mechanism so that the indications appearing through the window correspond to the natural appearance of the moon throughout the duration of a lunation.

Le document CH706094 décrit quant à lui un dispositif d'affichage de phase de lune comprenant un cadran présentant un axe, un indicateur de lune, un cache positionné pour masquer plus ou moins l'indicateur de lune et des premiers moyens d'entraînement en rotation de l'indicateur de lune agencés pour déplacer en rotation l'indicateur de lune.The document CH706094 for its part describes a moon phase display device comprising a dial having an axis, a moon indicator, a cover positioned to hide more or less the moon indicator and first rotating drive means of the moon. moon indicator arranged to move the moon indicator in rotation.

Ces dispositifs permettent bien de reproduire l'aspect de la lune. Toutefois, ils sont compliqués et volumineux en épaisseur.These devices make it possible to reproduce the appearance of the moon. However, they are complicated and bulky in thickness.

Résumé de l'inventionSummary of the invention

L'invention vise à remédier aux inconvénients de l'état de la technique en proposant un dispositif d'affichage de phases de lune plus simple et moins volumineux en épaisseur que ceux de l'art antérieur.The invention aims to overcome the drawbacks of the state of the art by providing a device for displaying moon phases simpler and less bulky in thickness than those of the prior art.

Pour ce faire, est proposé selon un premier aspect de l'invention, un dispositif d'affichage de phases lunaires comportant :

  • un cache annulaire comportant quatre portions d'anneau, deux portions d'anneau successives étant séparées par un lobe convexe en saillie radiale vers l'intérieur du cache annulaire ;
  • un disque indicateur de lune,
  • des moyens d'entraînement agencés pour animer le disque indicateur de lune de façon à ce qu'il effectue une trajectoire cycloïdale entre deux lobes successifs, le disque indicateur de lune étant occulté au moins partiellement par chacun des deux lobes pendant une partie de la trajectoire cycloïdale de façon à reproduire les phases lunaires pendant un mois lunaire.
To do this, a first aspect of the invention provides a lunar phase display device comprising:
  • an annular cover having four ring portions, two successive ring portions being separated by a convex lobe projecting radially inwardly of the annular cover;
  • a moon indicator disc,
  • driving means arranged to animate the moon indicator disc so that it makes a cycloidal trajectory between two successive lobes, the moon indicator disc being at least partially obscured by each of the two lobes during a part of the trajectory cycloidal so as to reproduce the lunar phases during a lunar month.

Le disque indicateur de lune va donc effectuer quatre trajectoires cycloïdales lorsqu'il effectue un tour complet du dispositif d'affichage. Au cours de chaque trajectoire cycloïdale, le disque indicateur de lune part d'une position dans laquelle il est entièrement caché par un lobe. Cette position représente la nouvelle lune. Le disque indicateur de lune va ensuite progressivement se découvrir, jusqu'à atteindre la moitié de la trajectoire cycloïdale. Lorsqu'il atteint la moitié de la trajectoire cycloïdale, il n'est plus camouflé par aucun lobe, de sorte qu'il représente la pleine lune. Le disque va ensuite progresser sur la trajectoire cycloïdale, et être de plus en plus caché par le lobe suivant jusqu'à être à nouveau totalement caché.The moon indicator disc will therefore perform four cycloidal trajectories when it performs a complete turn of the display device. During each cycloidal trajectory, the moon indicator disc leaves a position in which it is completely hidden by a lobe. This position represents the new moon. The moon indicator disc will then gradually discover, until it reaches half of the cycloidal trajectory. When it reaches half of the cycloidal trajectory, it is no longer camouflaged by any lobe, so it represents the full moon. The disc will then progress on the cycloidal trajectory, and be more and more hidden by the next lobe until it is completely hidden again.

Le dispositif d'affichage selon le premier aspect de l'invention peut également présenter une ou plusieurs des caractéristiques ci-après prises individuellement ou selon toutes les combinaisons techniquement possibles.The display device according to the first aspect of the invention may also have one or more of the following features taken individually or in any technically possible combination.

Avantageusement, le cache annulaire comporte un centre, les moyens d'entraînement comportant un bras comportant :

  • une première extrémité agencée de façon à être mobile en rotation autour d'un premier axe de rotation passant par le centre du cache annulaire ;
  • une deuxième extrémité, le disque indicateur de lune étant agencé de façon à effectuer un mouvement de rotation autour d'un deuxième axe de rotation passant par la deuxième extrémité du bras.
Advantageously, the annular cover comprises a center, the drive means comprising an arm comprising:
  • a first end arranged to be rotatable about a first axis of rotation through the center of the annular cover;
  • a second end, the moon indicator disc being arranged to rotate about a second axis of rotation through the second end of the arm.

La trajectoire cycloïdale du disque indicateur de lune est donc obtenue grâce à un double mouvement de rotation : le bras effectue un premier mouvement de rotation autour du premier axe de rotation, pendant que le disque indicateur de lune effectue un deuxième mouvement de rotation autour du deuxième axe de rotation passant par une extrémité du bras.The cycloidal trajectory of the moon indicator disc is thus obtained thanks to a double rotational movement: the arm makes a first rotational movement about the first axis of rotation, while the moon indicator disk performs a second rotational movement around the second axis of rotation. axis of rotation passing through one end of the arm.

Avantageusement, les moyens d'entraînement comportent en outre :

  • Une couronne annulaire pourvue d'une denture intérieure ;
  • Un pignon pourvu d'une denture extérieure engrenant avec la denture intérieure de la couronne annulaire, la deuxième extrémité du bras étant reliée au pignon de façon à ce que le pignon soit mobile en rotation autour du deuxième axe de rotation, le disque indicateur de lune étant fixé à un point excentré du pignon.
Advantageously, the drive means further comprise:
  • An annular ring provided with an internal toothing;
  • A pinion provided with an external toothing meshing with the internal toothing of the annular ring, the second end of the arm being connected to the pinion so that the pinion is rotatable about the second axis of rotation, the moon indicator disc being fixed at an eccentric point of the pinion.

Avantageusement, chaque lobe présente une forme ronde de diamètre égal à celui du disque indicateur de lune, afin que ledit lobe camoufle entièrement le disque indicateur de lune lorsque celui-ci est derrière lui, mais que dans le même temps, le disque commence à se découvrir immédiatement lorsque son centre est décalé par rapport au centre du lobe.Advantageously, each lobe has a round shape of diameter equal to that of the moon indicator disc, so that said lobe completely camouflage the moon indicator disc when it is behind him, but that at the same time, the disc begins to discover immediately when its center is offset from the center of the lobe.

Avantageusement, le cache et le disque indicateur de lune sont dimensionnés de façon à ce qu'il existe une position entre deux lobes successifs dans laquelle le disque indicateur de lune est simultanément tangent aux deux lobes successifs. Cette position correspond à la pleine lune.Advantageously, the cover and the moon indicator disc are dimensioned so that there is a position between two successive lobes in which the moon indicator disc is simultaneously tangential to the two successive lobes. This position corresponds to the full moon.

Avantageusement, chaque portion d'anneau présente une forme d'arc de cercle.Advantageously, each ring portion has a shape of an arc of a circle.

Avantageusement, le dispositif d'affichage comporte en outre des moyens de transmission agencés pour entraîner en rotation le bras autour du premier axe de rotation.Advantageously, the display device further comprises transmission means arranged to rotate the arm about the first axis of rotation.

Avantageusement, les moyens de transmission sont configurés pour que le bras effectue un tour complet autour du premier axe de rotation en quatre mois lunaires.Advantageously, the transmission means are configured so that the arm performs a complete revolution around the first axis of rotation in four lunar months.

Un deuxième aspect de l'invention concerne une pièce horlogère comportant un dispositif d'affichage selon le premier aspect de l'invention.A second aspect of the invention relates to a watch component comprising a display device according to the first aspect of the invention.

Avantageusement, le cache annulaire est un cadran de la pièce horlogère.Advantageously, the annular cover is a dial of the watch part.

Avantageusement, les moyens de transmission sont reliés au mouvement horloger de la pièce horlogère.Advantageously, the transmission means are connected to the watch movement of the watch part.

Avantageusement, la pièce horlogère comporte des aiguilles, le cadran étant disposé entre les aiguilles et le disque indicateur de lune.Advantageously, the timepiece comprises needles, the dial being disposed between the hands and the moon indicator disc.

Description sommaire des dessinsBrief description of the drawings

D'autres particularités et avantages ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :

  • la figure 1 représente une vue schématique d'un dispositif d'affichage selon un mode de réalisation de l'invention;
  • la figure 2 représente une vue schématique d'une montre selon un mode de réalisation de l'invention.
Other particularities and advantages will emerge clearly from the description which is given hereinafter, by way of indication and in no way limiting, with reference to the appended drawings, in which:
  • the figure 1 is a schematic view of a display device according to one embodiment of the invention;
  • the figure 2 represents a schematic view of a watch according to one embodiment of the invention.

Description détaillée d'un mode de réalisationDetailed description of an embodiment

Un dispositif d'affichage 1 et une montre comportant un tel dispositif d'affichage vont maintenant être décrits en référence aux figures 1 et 2.A display device 1 and a watch comprising such a display device will now be described with reference to the figures 1 and 2 .

Le dispositif d'affichage 1 comporte un cache 2. Ce cache 2 est annulaire. Le cache annulaire 2 présente une symétrie de révolution par rapport à son centre 9. Le cache 2 comporte quatre portions d'anneau 3. Deux portions d'anneau 3 successives sont séparées par un lobe 4 convexe en saillie radiale vers l'intérieur du cache 2. Les lobes 4 sont de préférence répartis régulièrement sur la périphérie du cache 2, de sorte que les portions d'anneau 3 présentent toutes la même longueur.The display device 1 comprises a cover 2. This cover 2 is annular. The annular cover 2 has a symmetry of revolution with respect to its center 9. The cover 2 comprises four ring portions 3. Two successive ring portions 3 are separated by a convex lobe 4 radially projecting towards the inside of the cover 2. The lobes 4 are preferably evenly distributed on the periphery of the cover 2, so that the ring portions 3 all have the same length.

Le cache 2 forme de préférence le cadran d'une montre comme représenté sur la figure 2. Les lobes 4 sont de préférence disposés à 3h, 6h, 9h et 12h.The cover 2 preferably forms the dial of a watch as represented on the figure 2 . The lobes 4 are preferably arranged at 3h, 6h, 9h and 12h.

Le cache 2 comporte de préférence des index 5. Chaque index 5 est de préférence aligné avec un lobe 4 comme représenté sur la figure 2.The cover 2 preferably has indexes 5. Each index 5 is preferably aligned with a lobe 4 as shown in FIG. figure 2 .

Le dispositif d'affichage comporte également un disque 6 représentant la lune. Ce disque 6 est également appelé « disque indicateur de lune » dans ce document. Ce disque 6 permet de représenter les phases de la lune pendant quatre mois lunaires en se déplaçant derrière le cache 2. Il est de préférence pourvu d'un motif représentant la face visible de la lune.The display device also includes a disk 6 representing the moon. This disc 6 is also called "moon indicator disc" in this document. This disc 6 makes it possible to represent the phases of the moon during four lunar months by moving behind the cover 2. It is preferably provided with a pattern representing the visible face of the moon.

Le dispositif d'affichage comporte des moyens d'entraînement agencés pour animer le disque 6 d'un mouvement cycloïdal 19 entre les centres 20 de deux lobes 4 successifs.The display device comprises drive means arranged to animate the disc 6 of a cycloidal movement 19 between the centers 20 of two successive lobes 4.

Ces moyens d'entraînement comportent de préférence une couronne 7 pourvue d'une denture intérieure 8. La couronne 7 présente une géométrie annulaire autour d'un point central 10 superposé avec le centre 9 du cache annulaire 2.These drive means preferably comprise a ring 7 provided with an internal toothing 8. The ring 7 has an annular geometry around a central point 10 superimposed with the center 9 of the annular cover 2.

Les moyens d'entraînement comportent également un pignon 11 pourvu d'une denture extérieure 12 engrenant avec la denture intérieure 8 de la couronne 7.The drive means also comprise a pinion 11 provided with an external toothing 12 meshing with the internal toothing 8 of the crown 7.

Les moyens d'entraînement comportent également un bras 12. Le bras 12 comporte une première extrémité 13 agencée de façon à être mobile en rotation autour d'un premier axe de rotation 14 passant par le centre du cache annulaire 2. Le bras 12 comporte également une deuxième extrémité 15 fixée au pignon 11 de façon à être mobile en rotation par rapport à un deuxième axe de rotation 16. Le deuxième axe de rotation 16 passe par le centre du pignon 11 et il traverse la deuxième extrémité 15 du bras.The drive means also comprise an arm 12. The arm 12 has a first end 13 arranged to be rotatable about a first axis of rotation 14 passing through the center of the annular cover 2. The arm 12 also comprises a second end 15 fixed to the pinion 11 so as to be rotatable relative to a second axis of rotation 16. The second axis of rotation 16 passes through the center of the pinion 11 and it passes through the second end 15 of the arm.

Le disque 6 représentant la lune est fixé de façon à ce que son centre soit lui aussi en rotation autour du deuxième axe de rotation 16. Pour ce faire, le disque 6 est de préférence fixé sur le pignon 11. Plus précisément, le centre 17 du disque 6 est de préférence fixé à un point excentré du pignon 11. Le centre du disque 6 et le centre du pignon 11 sont donc décalés l'un par rapport à l'autre.The disc 6 representing the moon is fixed so that its center is also rotated about the second axis of rotation 16. To do this, the disc 6 is preferably fixed on the pinion 11. More precisely, the center 17 of the disc 6 is preferably attached to an eccentric point of the pinion 11. The center of the disc 6 and the center of the pinion 11 are offset with respect to each other.

Lorsque le bras 12 est entraîné en rotation autour du premier axe de rotation 14, il entraîne en rotation le pignon 11 qui tourne autour du deuxième axe de rotation 16 en engrenant dans la denture intérieure 8 de la couronne 7. Le disque 6 est alors également entrainé en rotation autour du deuxième axe de rotation 16. Comme le deuxième axe de rotation 16 effectue un mouvement de rotation autour du premier axe de rotation 14, le centre du disque 6 effectue une trajectoire cycloïdale 19. Chaque trajectoire cycloïdale 19 s'étend du centre 20 d'un lobe 4 au centre 20 du lobe 4 suivant. Lorsque le bras 12 effectue un tour complet autour du premier axe de rotation 14, le disque 6 effectue donc quatre trajectoires cycloïdales 19 comme représenté sur la figure 1.When the arm 12 is rotated about the first axis of rotation 14, it rotates the pinion 11 which rotates about the second axis of rotation 16 by meshing with the internal toothing 8 of the crown 7. The disc 6 is then also rotated about the second axis of rotation 16. As the second axis of rotation 16 rotates around the first axis of rotation 14, the center of the disk 6 makes a cycloidal trajectory 19. Each cycloidal trajectory 19 extends from center 20 of a lobe 4 at the center 20 of the next lobe 4. When the arm 12 performs a complete revolution around the first axis of rotation 14, the disk 6 thus performs four cycloidal paths 19 as shown in FIG. figure 1 .

Pendant chaque trajectoire cycloïdale 19, le disque 6 va être plus ou moins caché par les lobes 4 entre lesquels il évolue.During each cycloidal trajectory 19, the disc 6 will be more or less hidden by the lobes 4 between which it evolves.

Plus précisément, au début de chaque trajectoire cycloïdale 19, le disque 6 est entièrement caché derrière un premier lobe 4. Cette position représente la nouvelle lune. Plus le disque 6 avance sur chaque trajectoire cycloïdale, plus il va se découvrir, jusqu'à atteindre le milieu de la trajectoire cycloïdale 19. Au milieu de chaque trajectoire cycloïdale, comme représenté sur la figure 2, le disque 6 est entièrement découvert. Dans cette position, le disque 6 est de préférence tangent aux deux lobes 4 qui l'entourent. Cette position représente la pleine lune.More precisely, at the beginning of each cycloidal trajectory 19, the disc 6 is entirely hidden behind a first lobe 4. This position represents the new moon. The further the disk 6 advances on each cycloidal trajectory, the more it will be discovered, until it reaches the middle of the cycloidal trajectory 19. In the middle of each cycloidal trajectory, as shown in FIG. figure 2 , disc 6 is fully discovered. In this position, the disc 6 is preferably tangent to the two lobes 4 surrounding it. This position represents the full moon.

Le disque 6 va ensuite à nouveau progressivement être caché par le lobe 4 suivant, jusqu'à atteindre à nouveau une position dans laquelle il est entièrement caché par ce nouveau lobe.The disk 6 will then again progressively be hidden by the next lobe 4, until reaching again a position in which it is completely hidden by this new lobe.

La vitesse de rotation du bras 12 autour du premier axe de rotation 14 est choisie de façon à ce que le disque 6 parcourt entièrement chaque trajectoire cycloïdale 19 en un mois lunaire.The rotational speed of the arm 12 about the first axis of rotation 14 is chosen so that the disk 6 completely traverses each cycloidal trajectory 19 in a lunar month.

Comme le dispositif d'affichage est de préférence intégré dans une pièce horlogère, le bras 12 est de préférence entraîné en rotation par le mouvement horloger de la pièce horlogère. Le premier axe de rotation 14 est de préférence confondu avec l'axe de rotation des aiguilles 18 de la pièce horlogère.Since the display device is preferably integrated in a watchmaking part, the arm 12 is preferably rotated by the watchmaking movement of the watchmaking component. The first axis of rotation 14 is preferably coincident with the axis of rotation of the hands 18 of the watch.

Naturellement, l'invention n'est pas limitée aux modes de réalisation décrits en référence aux figures et des variantes pourraient être envisagées sans sortir du cadre de l'invention.Naturally, the invention is not limited to the embodiments described with reference to the figures and variants could be envisaged without departing from the scope of the invention.

Claims (11)

Dispositif d'affichage (1) de phases lunaires comportant : - un cache (2) annulaire comportant quatre portions d'anneau (3), deux portions d'anneau (3) successives étant séparées par un lobe (4) convexe en saillie radiale vers l'intérieur du cache (2) annulaire ; - un disque indicateur de lune (6), - des moyens d'entraînement agencés pour animer le disque indicateur de lune (6) de façon à ce qu'il effectue une trajectoire cycloïdale (19) entre deux lobes (4) successifs, le disque indicateur de lune (6) étant occulté au moins partiellement par chacun des deux lobes (4) pendant une partie de la trajectoire cycloïdale (19) de façon à reproduire les phases lunaires pendant un mois lunaire. Lunar phase display device (1) comprising: - An annular cover (2) comprising four ring portions (3), two successive ring portions (3) being separated by a convex lobe (4) radially projecting towards the inside of the annular cover (2); a moon indicator disc (6), - Driving means arranged to animate the moon indicator disc (6) so that it performs a cycloidal trajectory (19) between two successive lobes (4), the moon indicator disc (6) being obscured at least partially by each of the two lobes (4) during part of the cycloidal trajectory (19) so as to reproduce the lunar phases during a lunar month. Dispositif d'affichage (1) selon la revendication précédente, dans lequel le cache annulaire comporte un centre (9), les moyens d'entraînement comportant un bras (12) comportant : - une première extrémité (13) agencée de façon à être mobile en rotation autour d'un premier axe de rotation (14) passant par le centre (9) du cache annulaire (2); - une deuxième extrémité (15), le disque indicateur de lune (6) étant agencé de façon à effectuer un mouvement de rotation autour d'un deuxième axe de rotation (16) passant par la deuxième extrémité du bras (15). Display device (1) according to the preceding claim, wherein the annular cover comprises a center (9), the drive means comprising an arm (12) comprising: - a first end (13) arranged to be rotatable about a first axis of rotation (14) passing through the center (9) of the annular cover (2); - A second end (15), the moon indicator disc (6) being arranged to rotate about a second axis of rotation (16) passing through the second end of the arm (15). Dispositif d'affichage selon la revendication précédente, dans lequel les moyens d'entraînement comportent en outre : - Une couronne annulaire (7) pourvue d'une denture intérieure (8) ; - Un pignon (11) pourvu d'une denture extérieure (12) engrenant avec la denture intérieure (8) de la couronne annulaire (7), la deuxième extrémité (15) du bras (12) étant reliée au pignon (15) de façon à ce que le pignon soit mobile en rotation autour du deuxième axe de rotation (16), le disque indicateur de lune (6) étant fixé à un point excentré du pignon. Display device according to the preceding claim, wherein the drive means further comprise: - An annular ring (7) provided with an internal toothing (8); - A pinion (11) provided with an external toothing (12) meshing with the internal toothing (8) of the annular ring (7), the second end (15) of the arm (12) being connected to the pinion (15) of so that the pinion is rotatable about the second axis of rotation (16), the moon indicator disk (6) being fixed at an eccentric point of the pinion. Dispositif d'affichage selon l'une des revendications 2 ou 3, comportant en outre des moyens de transmission agencés pour entraîner en rotation le bras (12) autour du premier axe de rotation (14).Display device according to one of claims 2 or 3, further comprising transmission means arranged to rotate the arm (12) about the first axis of rotation (14). Dispositif d'affichage selon l'une des revendications 2 à 4, dans lequel les moyens de transmission sont configurés pour que le bras (12) effectue un tour complet autour du premier axe de rotation (14) en quatre mois lunaires.Display device according to one of claims 2 to 4, wherein the transmission means are configured so that the arm (12) performs a complete revolution around the first axis of rotation (14) in four lunar months. Dispositif d'affichage selon l'une des revendications précédentes, dans lequel chaque lobe (4) présente une forme ronde de diamètre égal à celui du disque indicateur de lune (6).Display device according to one of the preceding claims, wherein each lobe (4) has a round shape of diameter equal to that of the moon indicator disc (6). Dispositif d'affichage selon l'une des revendications précédentes, dans lequel le cache (2) et le disque indicateur de lune (6) sont dimensionnés de façon à ce qu'il existe une position entre deux lobes (4) successifs dans laquelle le disque indicateur de lune (6) est simultanément tangent aux deux lobes successifs (4).Display device according to one of the preceding claims, in which the cover (2) and the moon indicator disk (6) are dimensioned so that there is a position between two successive lobes (4) in which the moon indicator disc (6) is simultaneously tangent to the two successive lobes (4). Dispositif d'affichage selon l'une des revendications précédentes, dans lequel chaque portion d'anneau (3) présente une forme d'arc de cercle.Display device according to one of the preceding claims, wherein each ring portion (3) has a circular arc shape. Pièce horlogère comportant un dispositif d'affichage (1) selon l'une des revendications précédentes.Watch component comprising a display device (1) according to one of the preceding claims. Pièce horlogère selon la revendication précédente, dans laquelle le cache annulaire est un cadran de la pièce horlogère.Timepiece according to the preceding claim, wherein the annular cover is a dial of the watch. Pièce horlogère selon l'une des revendications 9 ou 10, comportant des aiguilles (18), le cadran étant disposé entre les aiguilles (18) et le disque indicateur de lune (6).Timepiece according to one of claims 9 or 10, comprising needles (18), the dial being disposed between the needles (18) and the moon indicator disc (6).
EP17161916.6A 2017-03-20 2017-03-20 Device for displaying the phases of the moon Active EP3379343B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP17161916.6A EP3379343B1 (en) 2017-03-20 2017-03-20 Device for displaying the phases of the moon
US15/888,204 US10520892B2 (en) 2017-03-20 2018-02-05 Lunar phase display device
JP2018029447A JP6484735B2 (en) 2017-03-20 2018-02-22 Moon phase display device
CN201810203383.0A CN108628144B (en) 2017-03-20 2018-03-13 Moon phase display device
KR1020180031506A KR102067889B1 (en) 2017-03-20 2018-03-19 Lunar phase display device
RU2018109465A RU2688040C1 (en) 2017-03-20 2018-03-19 Moon phase display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17161916.6A EP3379343B1 (en) 2017-03-20 2017-03-20 Device for displaying the phases of the moon

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EP3379343A1 true EP3379343A1 (en) 2018-09-26
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EP (1) EP3379343B1 (en)
JP (1) JP6484735B2 (en)
KR (1) KR102067889B1 (en)
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RU (1) RU2688040C1 (en)

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EP3819716A1 (en) * 2019-11-05 2021-05-12 The Swatch Group Research and Development Ltd Device for displaying the moon on request
EP3985449A1 (en) * 2020-10-13 2022-04-20 The Swatch Group Research and Development Ltd Lunar phase indicator by rotating disc

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CN108628144A (en) 2018-10-09
JP6484735B2 (en) 2019-03-13
KR102067889B1 (en) 2020-01-17
US10520892B2 (en) 2019-12-31
RU2688040C1 (en) 2019-05-17
JP2018155739A (en) 2018-10-04
CN108628144B (en) 2020-04-24
KR20180106985A (en) 2018-10-01
EP3379343B1 (en) 2020-02-19
US20180267473A1 (en) 2018-09-20

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