EP2141556B1 - Calendar mechanism for a timepiece - Google Patents

Calendar mechanism for a timepiece Download PDF

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Publication number
EP2141556B1
EP2141556B1 EP08159637A EP08159637A EP2141556B1 EP 2141556 B1 EP2141556 B1 EP 2141556B1 EP 08159637 A EP08159637 A EP 08159637A EP 08159637 A EP08159637 A EP 08159637A EP 2141556 B1 EP2141556 B1 EP 2141556B1
Authority
EP
European Patent Office
Prior art keywords
date
rings
teeth
ring
mechanism according
Prior art date
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Application number
EP08159637A
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German (de)
French (fr)
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EP2141556A1 (en
Inventor
Julien Chaignat
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.)
ETA Manufacture Horlogere Suisse SA
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ETA Manufacture Horlogere Suisse 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.)
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Application filed by ETA Manufacture Horlogere Suisse SA filed Critical ETA Manufacture Horlogere Suisse SA
Priority to EP08159637A priority Critical patent/EP2141556B1/en
Priority to KR20090047268A priority patent/KR101483799B1/en
Priority to SG200903835-7A priority patent/SG158021A1/en
Priority to US12/492,208 priority patent/US7835229B2/en
Priority to JP2009156653A priority patent/JP5443857B2/en
Priority to CN200910139859.XA priority patent/CN101620407B/en
Publication of EP2141556A1 publication Critical patent/EP2141556A1/en
Priority to HK10102004.8A priority patent/HK1135480A1/en
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Publication of EP2141556B1 publication Critical patent/EP2141556B1/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
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • 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
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
    • G04B19/25366—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement manually corrected at the end of months having less than 31 days

Definitions

  • the invention relates to timepieces provided with a date mechanism.
  • the invention particularly relates to timepieces with a large window equipped with two superposed calendar rings.
  • the analog display of the dates in the wristwatches generally uses a date ring equipped with 31 sectors bearing the markings from 1 to 31 for the different days of the month.
  • a watch has the disadvantage of presenting for each sector a field of reduced size to a 31 th of the circumference of the ring. In a small wristwatch, the size of this field is insufficient to present a sufficiently readable date display.
  • the patent application EP 1,536,299 discloses a movement provided with a counting mechanism and a cyclical watch window for a watch calendar, providing a large-format date information, substantially double that of the 31-sector calendar.
  • This mechanism comprises an upper ring provided with 16 sectors, having 15 successive markings of a cycle of 31 positions, the 16th sector being an excess sector having an open or transparent window.
  • the movement also includes a lower ring equipped with 17 sectors, presenting the other 16 successive markings of the cycle, the 17th sector being a surplus sector.
  • the upper ring is held stationary while a command scrolls by rotation the successive markings of the lower ring in the window in the upper ring.
  • the window is arranged under the window of a cover plate of the shows.
  • Each ring comprises peripheral teeth made of a succession of regularly spaced teeth, these peripheral teeth extending in two tiered rows.
  • the teeth of the upper and lower rows of the upper ring are superimposed.
  • the teeth of the upper and lower rows of the lower ring are shifted.
  • a location of each of the teeth of the upper and lower rings is toothless so that the upper ring can thus be held in the display position without being driven for the dates 1 to 16, the lower ring being held in a position without waiting to be driven for the positions 17 to 31.
  • the rings are provided with vertical projections, meshing in these positions. These projections are made in the outer periphery of the rings.
  • Two superimposed control wheels drive the upper and lower rings, respectively. These wheels perform a complete turn daily and are provided with an actuating finger for driving once a day a tooth of a lower or upper ring.
  • a correction mechanism makes it possible to modify the indication provided by the date mechanism.
  • Each ring has a complex three-dimensional structure, with teeth on several levels and abutments projecting from the flat display surface of the ring.
  • Such a structure involves a method of manufacturing by plastic molding, which induces a relatively thick ring that strikes the overall size of the movement. This in turn leads to a relatively expensive ring that increases the cost price of the movement.
  • the display of the dates would still benefit from being enlarged.
  • the invention proposes a date mechanism for a timepiece.
  • the mechanism comprises two calendar rings superimposed and provided with successive markings of date. These date rings are rotatably mounted relative to each other.
  • the upper ring has a window formed between two markings.
  • the rings have drive teeth, each tooth being associated with a marking or a window.
  • a control wheel has two superposed levels of teeth. These stages are coupled in rotation. Each stage comprises a portion provided with adjacent teeth and a portion free of teeth.
  • Each floor drives a respective date ring.
  • the toothed portions and toothless portions of the control wheel are configured such that during rotation of the control wheel, at least one tooth of the upper stage and one tooth of the lower stage simultaneously drive. the two rings, and so that a single date ring is rotated simultaneously by the other teeth.
  • the figure 1 more precisely represents an embodiment of a date mechanism 1 according to the invention.
  • This mechanism is intended to be mounted in the plate of a non-illustrated watch, typically a wristwatch intended to display the day of the month.
  • the mechanism 1 comprises an upper date ring 2 and a lower date ring 3.
  • the upper date ring 2 is superimposed on the lower date ring 3.
  • the date ring 2 has sixteen sectors regularly distributed on its circumference .
  • the sixteen sectors comprise on the upper face of the ring 2 successive markings ranging from "17" to "31", as well as a window 21 placed between markings "17” and "31".
  • the window 21 has a dimension sufficient to allow visualization of the markings present on the lower date ring 3.
  • Window means both a component made of material transparent to light or a through opening formed in the upper ring 2
  • the date ring 3 has sixteen sectors distributed regularly around its circumference. The sixteen sectors have on the upper face of the ring 3 successive markings ranging from “1" to "16".
  • the watch will typically have a cover plate of the mechanism 1, fixed to the platen of the movement of the watch. A window will be provided in this cover plate, so as to display markings present on the rings 2 and 3 in the window.
  • the Figures 2 and 3 more precisely represent the constituent details of the rings 2 and 3.
  • the date rings 2 and 3 respectively have bores 25 and 35 in their middle part.
  • Teeth 22 project radially inwardly of the bore 25 from an inner periphery 23 of the ring 2.
  • teeth 32 project radially inwardly of the bore 35 from a periphery.
  • the teeth 22 and 32 are evenly spaced along the inner peripheries 23 and 33 of the respective date rings 2 and 3.
  • a tooth 22 is associated with each marking 24 or window 21 of the upper date ring 2.
  • a tooth 32 is associated with each marking 34 of the lower date ring 3.
  • the mechanism 1 further comprises a control wheel 4 for driving the first and second rings 2 and 3.
  • the control wheel 4 performs a complete revolution in 31 days.
  • the control wheel 4 is notably driven in rotation by means of a pinion on the hour wheel 61 and by means of gears 62 and 63 which will not be further described here.
  • the control wheel 4 has first and second stages of teeth 41 and 42 superimposed.
  • the stages 41 and 42 each have on their outer periphery a portion provided with successive adjacent teeth and a portion without teeth.
  • the teeth are regularly distributed in the portion provided with teeth and spaced at an angle of 2 ⁇ / 31.
  • the stage 41 includes control teeth of the sectors "17" to “31” and the window 21. The portion free of teeth therefore extends between the teeth “window” and "17".
  • the stage 42 includes control teeth of sectors "1" to "16". The portion free of teeth therefore extends between the teeth "16" and "1".
  • the portion provided with teeth of a stage is placed in line with the toothless portion of the other floor.
  • the teeth of the stage 41 controlling the markings "17” to "31” of the ring 2 are disposed in line with the portion of the stage 42 without teeth.
  • the toothless portion of the stage 41 is placed vertically above the teeth of the stage 42 controlling the markings "2" to "16" of the ring 3.
  • the tooth of the stage 41 which control sector “1" of the ring 3 is disposed vertically above the tooth of the stage 42 which controls the window 21 of the ring 2.
  • the first and second stages 41 and 42 are coupled in rotation, so that a simple rotation of one revolution of the wheel 4 makes it possible to drive one or the other of the two rings 2 and 3.
  • the stages 41 and 42 are configured to respectively drive the rings 2 and 3 by their portions provided with teeth.
  • Multiplying mobiles 11, 13 make it possible, in particular, to provide a respective kinematic link between the stages 41 and 42 and the rings 2 and 3.
  • the multiplier mobiles make it possible in particular to guarantee that the daily rotation of the wheel 4 involves a rotation of a ring of date of a date to the next date.
  • the stage 41 is coupled to the ring 2 by means of a first multiplier gear 11, a third multiplier gear 13 and the upper gear of a corrective gear train 9.
  • the gear multiplier 11 comprises a pinion 112 driven by the toothed portion of stage 41.
  • the multiplier gear 11 furthermore comprises a wheel 111 fixed to pinion 112.
  • the multiplier gear 13 comprises a pinion 131 driven by wheel 111.
  • the multiplier gear 13 further comprises a wheel 132 fixed to the pinion 131 and driving the upper gear of the corrective gear train 9.
  • the stage 42 is coupled to the ring 3 by means of a second multiplier gear 12, a fourth multiplier gear 14 and the lower gear of the correction gear train 9.
  • the multiplier gear 12 comprises a pinion 121 driven by the toothed portion of the stage 42.
  • the multiplier gear 12 further comprises a wheel 122 fixed to the pinion 121.
  • the multiplier gear 14 comprises a pinion 142 driven by the wheel 122.
  • the multiplier gear 14 further comprises a wheel 141 fixed to the gear 142 and driving the lower gear of the corrective gear train 9.
  • the first and second multiplier gears 11 and 12 are rotatably mounted about the same axis.
  • the first and second multiplier gears are independent of each other.
  • the third and fourth multiplier gears 13 and 14 are rotatably mounted about the same axis.
  • the third and fourth multiplier gears are independent of each other. Because these multiplier gear pairs are mounted on common axes, the mechanism 1 obtained is relatively compact.
  • the operation of the mechanism 1 is as follows. It is assumed that the opening 21 and the marking "1" are initially placed under the window of the cover plate. The first day of the month is displayed for the user.
  • the rings 2 and 3 are only slaves of the teeth of the floors 41 and 42 respectively, which allows the use of simple teeth formed in the thickness of the ring and regularly distributed along the inner periphery thereof. It should be noted in particular that there is no interaction between the two rings. Moreover, a single stage of teeth on each ring is sufficient to ensure its training.
  • the simplicity of the drive and the shapes of the rings 2 and 3 also makes it possible to produce them with thin metal sheets, which makes it possible to reduce their thickness and therefore the thickness of the resulting date mechanism for a given stiffness and resistance.
  • the date rings 2 and 3 are advantageously flat, so that the mechanism 1 is compact and its implementation simplified.
  • the rings 2 and 3 can be made for example by cutting in a metal sheet using any suitable technique such as stamping, laser cutting, water jet cutting or other.
  • the teeth 22 and 32 will thus have the same thickness as the body of the ring presenting the markings.
  • the rings 2 and 3 must be held slightly apart from each other for example by embossing bumps in the lower date ring 3.
  • the ring 3 does not require additional sector free of marking.
  • the size of the markings 34 on this ring 3 is increased.
  • the rings 2 and 3 may have the same number of teeth (16 in this case). The manufacturing processes of rings 2 and 3 can thus be extremely close, which reduces their cost price.
  • the control wheel 4 comprises in this case cut metal sheets forming the toothed stages 41 and 42.
  • a rivet 43 allows in particular to couple the stages 41 and 42 and also to guide the control wheel rotates through its median port.
  • the invention has been described with calendars corresponding to days of the month, the invention also applies to any other type of calendar, for example the seven days of the week, the weeks of the year, or the twelve months of the year, the control wheel having a portion provided with a number of teeth equal to (1 + Q) / 2, where Q corresponds to the number of calendars to be displayed

Description

L'invention concerne les pièces d'horlogerie munies d'un mécanisme de quantième. L'invention concerne en particulier des pièces d'horlogerie à grand guichet munies de deux anneaux de quantième superposés.The invention relates to timepieces provided with a date mechanism. The invention particularly relates to timepieces with a large window equipped with two superposed calendar rings.

L'affichage analogique des quantièmes dans les montres à bracelet fait généralement appel à un anneau de quantième muni de 31 secteurs portant les marquages de 1 à 31 pour les différents jours du mois. Une telle montre présente cependant l'inconvénient de ne présenter pour chaque secteur qu'un champ d'une dimension réduite à un 31 ème de la circonférence de l'anneau. Dans une montre bracelet de petit format, la dimension de ce champ est insuffisante pour présenter un affichage de quantième suffisamment lisible.The analog display of the dates in the wristwatches generally uses a date ring equipped with 31 sectors bearing the markings from 1 to 31 for the different days of the month. Such a watch, however, has the disadvantage of presenting for each sector a field of reduced size to a 31 th of the circumference of the ring. In a small wristwatch, the size of this field is insufficient to present a sufficiently readable date display.

La demande de brevet EP 1 536 299 décrit un mouvement muni d'un mécanisme de comptage et d'affichage cyclique à guichet pour quantième de montre, fournissant une information de quantième de grand format, sensiblement double de celui du quantième à 31 secteurs. Ce mécanisme comprend un anneau supérieur muni de 16 secteurs, présentant 15 marquages successifs d'un cycle de 31 positions, le 16ème secteur étant un secteur excédentaire présentant une fenêtre ouverte ou transparente. Le mouvement comprend également un anneau inférieur muni de 17 secteurs, présentant les 16 autres marquages successifs du cycle, le 17ème secteur étant un secteur excédentaire. L'anneau supérieur est maintenu immobile alors qu'une commande fait défiler par rotation les marquages successifs de l'anneau inférieur dans la fenêtre ménagée dans l'anneau supérieur. La fenêtre est disposée sous le guichet d'une plaque de recouvrement de la montre. Les marquages de l'anneau inférieur apparaissent ainsi successivement dans le guichet. Ensuite, l'anneau inférieur est maintenu immobile alors qu'une commande fait défiler par rotation les marquages successifs de l'anneau supérieur de sorte que ceux-ci apparaissent successivement dans le guichet, l'anneau supérieur recouvrant les marquages de l'anneau inférieur. Chaque anneau comprend des dentures périphériques faites d'une succession de dents régulièrement espacées, ces dentures périphériques s'étendant selon deux rangs étagés. Les dents des rangs supérieur et inférieur de l'anneau supérieur sont superposées. Les dents des rangs supérieur et inférieur de l'anneau inférieur sont décalées. Un endroit de chacune des dentures des anneaux supérieur et inférieur est dépourvu de dent de sorte que l'anneau supérieur peut ainsi être maintenu en position d'affichage sans être entraîné pour les quantièmes 1 à 16, l'anneau inférieur étant maintenu dans une position d'attente sans être entraîné pour les positions 17 à 31. Pour reprendre leur rotation lors des passages de 31 à 1 et de 16 à 17, les anneaux sont munis de saillies verticales, s'engrenant dans ces positions. Ces saillies sont réalisées dans la périphérie extérieure des anneaux. Deux roues de commande superposées entraînent respectivement les anneaux supérieur et inférieur. Ces roues effectuent un tour complet quotidiennement et sont munies d'un doigt d'actionnement destiné à entraîner une fois par jour une dent d'un anneau inférieur ou supérieur. Un mécanisme de correction permet de modifier l'indication fournie par le mécanisme de quantième.The patent application EP 1,536,299 discloses a movement provided with a counting mechanism and a cyclical watch window for a watch calendar, providing a large-format date information, substantially double that of the 31-sector calendar. This mechanism comprises an upper ring provided with 16 sectors, having 15 successive markings of a cycle of 31 positions, the 16th sector being an excess sector having an open or transparent window. The movement also includes a lower ring equipped with 17 sectors, presenting the other 16 successive markings of the cycle, the 17th sector being a surplus sector. The upper ring is held stationary while a command scrolls by rotation the successive markings of the lower ring in the window in the upper ring. The window is arranged under the window of a cover plate of the shows. The markings of the lower ring thus appear successively in the window. Then, the lower ring is held stationary while a command scrolls by rotation the successive markings of the upper ring so that they appear successively in the window, the upper ring covering the markings of the lower ring . Each ring comprises peripheral teeth made of a succession of regularly spaced teeth, these peripheral teeth extending in two tiered rows. The teeth of the upper and lower rows of the upper ring are superimposed. The teeth of the upper and lower rows of the lower ring are shifted. A location of each of the teeth of the upper and lower rings is toothless so that the upper ring can thus be held in the display position without being driven for the dates 1 to 16, the lower ring being held in a position without waiting to be driven for the positions 17 to 31. To resume their rotation during passages 31 to 1 and 16 to 17, the rings are provided with vertical projections, meshing in these positions. These projections are made in the outer periphery of the rings. Two superimposed control wheels drive the upper and lower rings, respectively. These wheels perform a complete turn daily and are provided with an actuating finger for driving once a day a tooth of a lower or upper ring. A correction mechanism makes it possible to modify the indication provided by the date mechanism.

Un tel mécanisme présente cependant des inconvénients. Chaque anneau présente une structure complexe tridimensionnelle, avec des dentures sur plusieurs niveaux et des butées en saillie par rapport à la surface d'affichage plane de l'anneau. Une telle structure implique un mode de fabrication par moulage de matière plastique, ce qui induit un anneau relativement épais qui grève l'encombrement global du mouvement. Cela induit d'autre part un anneau relativement coûteux qui accroît le prix de revient du mouvement. De plus, l'affichage des quantièmes gagnerait encore à être agrandi.Such a mechanism, however, has disadvantages. Each ring has a complex three-dimensional structure, with teeth on several levels and abutments projecting from the flat display surface of the ring. Such a structure involves a method of manufacturing by plastic molding, which induces a relatively thick ring that strikes the overall size of the movement. This in turn leads to a relatively expensive ring that increases the cost price of the movement. In addition, the display of the dates would still benefit from being enlarged.

L'invention vise à résoudre un ou plusieurs de ces inconvénients. L'invention porte ainsi sur mécanisme de quantième pour pièce d'horlogerie comprenant :

  • au moins des premier et deuxième anneaux de quantième montés à rotation l'un par rapport à l'autre, ces anneaux ayant une face munie de marquages successifs de quantièmes, le premier anneau de quantième présentant une fenêtre de visualisation ménagée entre deux marquages successifs, le premier anneau de quantième étant superposé au deuxième anneau de quantième, chacun de ces anneaux de quantième présentant des dents réparties à sa périphérie, chaque dent étant associée à un marquage respectif ou à la fenêtre de visualisation ;
  • une roue de commande des premier et deuxième anneaux de quantième;
caractérisé en ce que la roue de commande est munie d'un premier et d'un deuxième étages superposés de dentures, chaque étage de denture comprenant une portion munie de dents adjacentes et une portion dépourvue de dents, la portion dépourvue de dents d'un étage étant disposée à l'aplomb de la portion munie de dents de l'autre étage, une dent du premier étage étant superposée à une dent du deuxième étage, les dents des premier et deuxième étages de la roue de commande entraînant respectivement les premier et deuxième anneaux de quantième par leurs dents.The invention aims to solve one or more of these disadvantages. The invention thus relates to a date mechanism for a timepiece comprising:
  • at least first and second date rings rotatably mounted relative to each other, these rings having a face provided with successive markings of dates, the first date ring having a viewing window arranged between two successive markings, the first date ring being superimposed on the second date ring, each of these date rings having teeth distributed at its periphery, each tooth being associated with a respective marking or with the viewing window;
  • a control wheel of the first and second calendar rings;
characterized in that the control wheel is provided with a first and a second superimposed layer of teeth, each tooth stage comprising a portion provided with adjacent teeth and a portion free of teeth, the portion free of teeth of a tooth stage being disposed above the portion provided with teeth of the other stage, a tooth of the first stage being superimposed on a tooth of the second stage, the teeth of the first and second stages of the control wheel driving the first and second respectively second date rings by their teeth.

D'autres caractéristiques et avantages de l'invention 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 est une vue en perspective des principaux composants d'un mécanisme de quantième selon un mode de réalisation de l'invention ;
  • la figure 2 est une vue en perspective d'un anneau de quantième supérieur ;
  • la figure 3 est une vue en perspective d'un anneau de quantième inférieur ;
  • la figure 4 est une vue en perspective d'une roue de commande, et
  • la figure 5 est une vue de côté d'un mécanisme de réduction accouplé à la roue de commande.
Other characteristics and advantages of the invention will emerge clearly from the description which is given hereinafter, by way of indication and in no way limitative, with reference to the appended drawings, in which:
  • the figure 1 is a perspective view of the main components of a date mechanism according to one embodiment of the invention;
  • the figure 2 is a perspective view of an upper date ring;
  • the figure 3 is a perspective view of a lower date ring;
  • the figure 4 is a perspective view of a control wheel, and
  • the figure 5 is a side view of a reduction mechanism coupled to the control wheel.

L'invention propose un mécanisme de quantième pour une pièce d'horlogerie. Le mécanisme comprend deux anneaux de quantième superposés et munis de marquages successifs de quantième. Ces anneaux de quantième sont montés à rotation l'un par rapport à l'autre. L'anneau supérieur présente une fenêtre ménagée entre deux marquages. Les anneaux présentent des dents d'entraînement, chaque dent étant associée à un marquage ou à une fenêtre. Une roue de commande présente deux étages superposés de dentures. Ces étages sont accouplés en rotation. Chaque étage comprend une portion munie de dents adjacentes et une portion dépourvue de dents. Chaque étage entraîne un anneau de quantième respectif. Les portions munies de dents et les portions dépourvues de dents de la roue de commande sont configurées de sorte que, durant la rotation de la roue de commande, au moins une dent de l'étage supérieur et une dent de l'étage inférieur entraînent simultanément les deux anneaux, et de sorte qu'un seul anneau de quantième est entraîné en rotation simultanément par les autres dents.The invention proposes a date mechanism for a timepiece. The mechanism comprises two calendar rings superimposed and provided with successive markings of date. These date rings are rotatably mounted relative to each other. The upper ring has a window formed between two markings. The rings have drive teeth, each tooth being associated with a marking or a window. A control wheel has two superposed levels of teeth. These stages are coupled in rotation. Each stage comprises a portion provided with adjacent teeth and a portion free of teeth. Each floor drives a respective date ring. The toothed portions and toothless portions of the control wheel are configured such that during rotation of the control wheel, at least one tooth of the upper stage and one tooth of the lower stage simultaneously drive. the two rings, and so that a single date ring is rotated simultaneously by the other teeth.

La figure 1 représente de façon plus précise un mode de réalisation d'un mécanisme de quantième 1 selon invention. Ce mécanisme est destiné à être monté dans la platine d'une montre non illustrée, typiquement une montre bracelet destinée à afficher le jour du mois. Le mécanisme 1 comprend un anneau de quantième supérieur 2 et un anneau de quantième inférieur 3. L'anneau de quantième supérieur 2 est superposé à l'anneau de quantième inférieur 3. L'anneau de quantième 2 présente seize secteurs répartis régulièrement sur sa circonférence. Les seize secteurs comportent sur la face supérieure de l'anneau 2 des marquages successifs allant de « 17 » à « 31 », ainsi qu'une fenêtre 21 placée entre les marquages « 17 » et « 31 ». La fenêtre 21 présente une dimension suffisante pour permettre de visualiser des marquages présents sur l'anneau de quantième inférieur 3. Par fenêtre, on entend à la fois un composant en matériau transparent à la lumière ou une ouverture traversante ménagée dans l'anneau supérieur 2. L'anneau de quantième 3 présente seize secteurs répartis régulièrement sur sa circonférence. Les seize secteurs comportent sur la face supérieure de l'anneau 3 des marquages successifs allant de « 1 » à « 16 ». La montre présentera typiquement une plaque de recouvrement du mécanisme 1, fixée à la platine du mouvement de la montre. Un guichet sera ménagé dans cette plaque de recouvrement, de façon à afficher des marquages présents sur les anneaux 2 et 3 dans le guichet.The figure 1 more precisely represents an embodiment of a date mechanism 1 according to the invention. This mechanism is intended to be mounted in the plate of a non-illustrated watch, typically a wristwatch intended to display the day of the month. The mechanism 1 comprises an upper date ring 2 and a lower date ring 3. The upper date ring 2 is superimposed on the lower date ring 3. The date ring 2 has sixteen sectors regularly distributed on its circumference . The sixteen sectors comprise on the upper face of the ring 2 successive markings ranging from "17" to "31", as well as a window 21 placed between markings "17" and "31". The window 21 has a dimension sufficient to allow visualization of the markings present on the lower date ring 3. Window means both a component made of material transparent to light or a through opening formed in the upper ring 2 The date ring 3 has sixteen sectors distributed regularly around its circumference. The sixteen sectors have on the upper face of the ring 3 successive markings ranging from "1" to "16". The watch will typically have a cover plate of the mechanism 1, fixed to the platen of the movement of the watch. A window will be provided in this cover plate, so as to display markings present on the rings 2 and 3 in the window.

Les figures 2 et 3 représentent plus précisément des détails constitutifs des anneaux 2 et 3. Les anneaux de quantième 2 et 3 présentent respectivement des alésages 25 et 35 dans leur partie médiane. Des dents 22 sont en saillie radialement vers l'intérieur de l'alésage 25 depuis une périphérie intérieure 23 de l'anneau 2. De façon similaire, des dents 32 sont en saillie radialement vers l'intérieur de l'alésage 35 depuis une périphérie intérieure 33 de l'anneau 3. Les dents 22 et 32 sont régulièrement espacées le long des périphéries intérieures 23 et 33 des anneaux de quantième 2 et 3 respectifs. Une dent 22 est associée à chaque marquage 24 ou fenêtre 21 de l'anneau de quantième supérieur 2. De façon similaire, une dent 32 est associée à chaque marquage 34 de l'anneau de quantième inférieur 3.The Figures 2 and 3 more precisely represent the constituent details of the rings 2 and 3. The date rings 2 and 3 respectively have bores 25 and 35 in their middle part. Teeth 22 project radially inwardly of the bore 25 from an inner periphery 23 of the ring 2. Similarly, teeth 32 project radially inwardly of the bore 35 from a periphery. Inner 33 of the ring 3. The teeth 22 and 32 are evenly spaced along the inner peripheries 23 and 33 of the respective date rings 2 and 3. A tooth 22 is associated with each marking 24 or window 21 of the upper date ring 2. Similarly, a tooth 32 is associated with each marking 34 of the lower date ring 3.

Le mécanisme 1 comprend de plus une roue de commande 4 pour entraîner les premier et deuxième anneaux 2 et 3. La roue de commande 4 effectue un tour complet en 31 jours. La roue de commande 4 est notamment entraînée en rotation par l'intermédiaire d'un pignon sur la roue des heures 61 et par l'intermédiaire d'engrenages 62 et 63 qui ne seront pas décrits davantage ici.The mechanism 1 further comprises a control wheel 4 for driving the first and second rings 2 and 3. The control wheel 4 performs a complete revolution in 31 days. The control wheel 4 is notably driven in rotation by means of a pinion on the hour wheel 61 and by means of gears 62 and 63 which will not be further described here.

Comme détaillé plus précisément à la figure 4, la roue de commande 4 présente des premier et deuxième étages de dentures 41 et 42 superposés. Les étages 41 et 42 présentent chacun sur leur périphérie extérieure une portion munie de dents adjacentes successives et une portion dépourvue de dent. Les dents sont réparties régulièrement dans la portion munie de dents et espacées d'un angle de 2π/31.As detailed more specifically to the figure 4 , the control wheel 4 has first and second stages of teeth 41 and 42 superimposed. The stages 41 and 42 each have on their outer periphery a portion provided with successive adjacent teeth and a portion without teeth. The teeth are regularly distributed in the portion provided with teeth and spaced at an angle of 2π / 31.

Sur chacune des dents des étages 41 et 42 a été reportée une référence indiquant lequel des secteurs des anneaux 2 et 3 est commandé par cette dent. Ainsi, l'étage 41 comprend des dents de commande des secteurs « 17 » à « 31 » et de la fenêtre 21. La portion dépourvue de dents s'étend donc entre les dents « fenêtre » et « 17 ». L'étage 42 comprend des dents de commande des secteurs « 1 » à « 16 ». La portion dépourvue de dents s'étend donc entre les dents « 16 » et « 1 ». La portion pourvue de dents d'un étage est placée à l'aplomb de la portion dépourvue de dents de l'autre étage. Ainsi, les dents de l'étage 41 commandant les marquages « 17 » à « 31 » de l'anneau 2 sont disposées à l'aplomb de la portion de l'étage 42 dépourvue de dents. La portion dépourvue de dents de l'étage 41 est placée à l'aplomb des dents de l'étage 42 commandant les marquages « 2 » à « 16 » de l'anneau 3. Par exception, la dent de l'étage 41 qui commande le secteur « 1 » de l'anneau 3 est disposée à l'aplomb de la dent de l'étage 42 qui commande la fenêtre 21 de l'anneau 2.On each of the teeth of the stages 41 and 42 has been reported a reference indicating which of the sectors of the rings 2 and 3 is controlled by this tooth. Thus, the stage 41 includes control teeth of the sectors "17" to "31" and the window 21. The portion free of teeth therefore extends between the teeth "window" and "17". The stage 42 includes control teeth of sectors "1" to "16". The portion free of teeth therefore extends between the teeth "16" and "1". The portion provided with teeth of a stage is placed in line with the toothless portion of the other floor. Thus, the teeth of the stage 41 controlling the markings "17" to "31" of the ring 2 are disposed in line with the portion of the stage 42 without teeth. The toothless portion of the stage 41 is placed vertically above the teeth of the stage 42 controlling the markings "2" to "16" of the ring 3. By exception, the tooth of the stage 41 which control sector "1" of the ring 3 is disposed vertically above the tooth of the stage 42 which controls the window 21 of the ring 2.

Les premier et deuxième étages 41 et 42 sont accouplés en rotation, de sorte qu'une simple rotation d'un tour de la roue 4 permet d'entraîner l'un ou l'autre des deux anneaux 2 et 3. Les étages 41 et 42 sont configurés pour entraîner respectivement les anneaux 2 et 3 par leurs portions munies de dents. Des mobiles multiplicateurs 11, 13 permettent notamment de réaliser une liaison cinématique respective entre les étages 41 et 42 et les anneaux 2 et 3. Les mobiles multiplicateurs permettent notamment de garantir que la rotation quotidienne de la roue 4 implique une rotation d'un anneau de quantième d'un quantième au quantième suivant.The first and second stages 41 and 42 are coupled in rotation, so that a simple rotation of one revolution of the wheel 4 makes it possible to drive one or the other of the two rings 2 and 3. The stages 41 and 42 are configured to respectively drive the rings 2 and 3 by their portions provided with teeth. Multiplying mobiles 11, 13 make it possible, in particular, to provide a respective kinematic link between the stages 41 and 42 and the rings 2 and 3. The multiplier mobiles make it possible in particular to guarantee that the daily rotation of the wheel 4 involves a rotation of a ring of date of a date to the next date.

Comme illustré à la figure 5, l'étage 41 est accouplé à l'anneau 2 par l'intermédiaire d'un premier engrenage multiplicateur 11, d'un troisième engrenage multiplicateur 13 et de l'engrenage supérieur d'un train d'engrenages correcteur 9. L'engrenage multiplicateur 11 comprend un pignon 112 entraîné par la partie dentée de l'étage 41. L'engrenage multiplicateur 11 comprend par ailleurs une roue 111 fixée au pignon 112. L'engrange multiplicateur 13 comprend un pignon 131 entraîné par la roue 111. L'engrenage multiplicateur 13 comprend de plus une roue 132 fixée au pignon 131 et entraînant l'engrenage supérieur du train d'engrenages correcteur 9.As illustrated in figure 5 , the stage 41 is coupled to the ring 2 by means of a first multiplier gear 11, a third multiplier gear 13 and the upper gear of a corrective gear train 9. The gear multiplier 11 comprises a pinion 112 driven by the toothed portion of stage 41. The multiplier gear 11 furthermore comprises a wheel 111 fixed to pinion 112. The multiplier gear 13 comprises a pinion 131 driven by wheel 111. The multiplier gear 13 further comprises a wheel 132 fixed to the pinion 131 and driving the upper gear of the corrective gear train 9.

L'étage 42 est accouplé à l'anneau 3 par l'intermédiaire d'un deuxième engrenage multiplicateur 12, d'un quatrième engrenage multiplicateur 14 et de l'engrenage inférieur du train d'engrenages correcteur 9. L'engrenage multiplicateur 12 comprend un pignon 121 entraîné par la partie dentée de l'étage 42. L'engrenage multiplicateur 12 comprend par ailleurs une roue 122 fixée au pignon 121. L'engrenage multiplicateur 14 comprend un pignon 142 entraîné par la roue 122. L'engrenage multiplicateur 14 comprend de plus une roue 141 fixée au pignon 142 et entraînant l'engrenage inférieur du train d'engrenages correcteur 9.The stage 42 is coupled to the ring 3 by means of a second multiplier gear 12, a fourth multiplier gear 14 and the lower gear of the correction gear train 9. The multiplier gear 12 comprises a pinion 121 driven by the toothed portion of the stage 42. The multiplier gear 12 further comprises a wheel 122 fixed to the pinion 121. The multiplier gear 14 comprises a pinion 142 driven by the wheel 122. The multiplier gear 14 further comprises a wheel 141 fixed to the gear 142 and driving the lower gear of the corrective gear train 9.

Comme on peut le voir à l'examen de la figure 5, les premier et deuxième engrenages multiplicateurs 11 et 12 sont montés à rotation autour d'un même axe. Les premier et deuxième engrenages multiplicateurs sont indépendants l'un de l'autre. De façon similaire, les troisième et quatrième engrenages multiplicateurs 13 et 14 sont montés à rotation autour d'un même axe. Les troisième et quatrième engrenages multiplicateurs sont indépendants l'un de l'autre. Du fait que ces couples d'engrenages multiplicateurs sont montés sur des axes communs, le mécanisme 1 obtenu est relativement compact.As can be seen from the examination of the figure 5 the first and second multiplier gears 11 and 12 are rotatably mounted about the same axis. The first and second multiplier gears are independent of each other. Similarly, the third and fourth multiplier gears 13 and 14 are rotatably mounted about the same axis. The third and fourth multiplier gears are independent of each other. Because these multiplier gear pairs are mounted on common axes, the mechanism 1 obtained is relatively compact.

Durant la rotation de la roue de commande 4, le fonctionnement du mécanisme 1 est le suivant. On suppose que l'ouverture 21 et le marquage « 1 » sont initialement placés sous le guichet de la plaque de recouvrement. Le premier quantième du mois est donc affiché pour l'utilisateur.During the rotation of the control wheel 4, the operation of the mechanism 1 is as follows. It is assumed that the opening 21 and the marking "1" are initially placed under the window of the cover plate. The first day of the month is displayed for the user.

Lors des passages aux quantièmes 2 à 16 commandés par la roue 4 :

  • la partie dépourvue de dents de l'étage 41 est en regard du premier mobile 11. La roue 2 n'est donc pas entraînée et la fenêtre 21 reste immobile, placée sous le guichet ;
  • les dents de l'étage 42 qui commandent le déplacement des marquages « 2 » à « 16 » vont successivement être en prise avec le mobile 12, et donc entraîner l'anneau 3 par ses dents 32. Ainsi, les quantièmes « 2 » à « 16 » seront successivement affichés dans le guichet à travers la fenêtre 21.
During the passages at dates 2 to 16 controlled by the wheel 4:
  • the toothless portion of the stage 41 is opposite the first mobile 11. The wheel 2 is not driven and the window 21 remains stationary, placed under the window;
  • the teeth of the stage 42 which control the displacement of the markings "2" to "16" will successively be engaged with the mobile 12, and thus drive the ring 3 by its teeth 32. Thus, the dates "2" to "16" will be successively displayed in the window through the window 21.

Lors du passage, commandé par la roue 4, du quantième « 16 » marqué sur l'anneau de quantième inférieur 3 au quantième « 17 » marqué sur l'anneau de quantième supérieur 2, puis ultérieurement du quantième « 17 » au quantième « 31 » :

  • la partie dépourvue de dents de l'étage 42 est en regard du deuxième mobile 12. L'anneau 3 n'est donc pas entraîné et le marquage « 16 » reste immobile sous le guichet ;
  • les dents de l'étage 41 qui commandent le déplacement des marquages « 17 » à « 31 » vont successivement être en prise avec le mobile 11, et donc entraîner l'anneau 2 par ses dents 22. Ainsi, les quantièmes « 17 » à « 31 » seront successivement affichés dans le guichet.
During the passage, controlled by the wheel 4, the date "16" marked on the lower date ring 3 to the date "17" marked on the upper date ring 2, then later of the date "17" to the date "31 »:
  • the toothless portion of the stage 42 is opposite the second mobile 12. The ring 3 is not driven and the marking "16" remains stationary under the window;
  • the teeth of the stage 41 which control the displacement of the markings "17" to "31" will successively be engaged with the mobile 11, and thus drive the ring 2 by its teeth 22. Thus, the dates "17" to "31" will be successively displayed in the window.

Lors du passage du quantième « 31 » porté par l'anneau supérieur 2 au quantième « 1 » porté par l'anneau inférieur 3, la dent de l'étage 41 qui commande le déplacement de la fenêtre et qui est superposée à la dent de l'étage 42 qui commande le déplacement du marquage « 1 » sont simultanément en prise avec les mobiles 11 et 12 respectivement. L'anneau 2 pivote ainsi pour placer la fenêtre 21 sous le guichet, alors que l'anneau 3 pivote pour placer le marquage « 1 » sous le guichet.During the passage of the date "31" carried by the upper ring 2 to the date "1" carried by the lower ring 3, the tooth of the stage 41 which controls the movement of the window and which is superimposed on the tooth of the stage 42 which controls the displacement of the marking "1" are simultaneously engaged with the mobiles 11 and 12 respectively. The ring 2 pivots to place the window 21 under the window, while the ring 3 pivots to place the marking "1" under the window.

Ainsi, les anneaux 2 et 3 sont uniquement esclaves des dents des étages 41 et 42 respectivement, ce qui permet d'utiliser des dents simples ménagées dans l'épaisseur de l'anneau et réparties régulièrement le long du pourtour intérieur de celui-ci. On notera en particulier qu'il n'y a aucune interaction entre les deux anneaux. Par ailleurs, un seul étage de dents sur chaque anneau est suffisant pour garantir son entraînement. La simplicité de l'entraînement et des formes des anneaux 2 et 3 permet également de les réaliser avec de fines tôles métalliques, ce qui permet de réduire leur épaisseur et donc l'épaisseur du mécanisme de quantième résultant pour une rigidité et une résistance données. Les anneaux de quantième 2 et 3 sont avantageusement plats, de sorte que le mécanisme 1 est compact et sa réalisation simplifiée. Les anneaux 2 et 3 pourront être réalisés par exemple par découpe dans une tôle métallique à l'aide de toute technique appropriée telle qu'étampage, découpage laser, découpage par jet d'eau ou autre. Les dents 22 et 32 présenteront ainsi la même épaisseur que le corps de l'anneau présentant les marquages. Les anneaux 2 et 3 devront être maintenus légèrement écartés l'un de l'autre par exemple par emboutissage de bosses dans l'anneau de quantième inférieur 3.Thus, the rings 2 and 3 are only slaves of the teeth of the floors 41 and 42 respectively, which allows the use of simple teeth formed in the thickness of the ring and regularly distributed along the inner periphery thereof. It should be noted in particular that there is no interaction between the two rings. Moreover, a single stage of teeth on each ring is sufficient to ensure its training. The simplicity of the drive and the shapes of the rings 2 and 3 also makes it possible to produce them with thin metal sheets, which makes it possible to reduce their thickness and therefore the thickness of the resulting date mechanism for a given stiffness and resistance. The date rings 2 and 3 are advantageously flat, so that the mechanism 1 is compact and its implementation simplified. The rings 2 and 3 can be made for example by cutting in a metal sheet using any suitable technique such as stamping, laser cutting, water jet cutting or other. The teeth 22 and 32 will thus have the same thickness as the body of the ring presenting the markings. The rings 2 and 3 must be held slightly apart from each other for example by embossing bumps in the lower date ring 3.

On peut noter que, selon invention, l'anneau 3 ne nécessite pas de secteur supplémentaire exempt de marquage. Ainsi, la dimension des marquages 34 sur cet anneau 3 est accrue. Par ailleurs, on peut noter que pour un nombre impair de quantièmes (31 dans le cas présent), les anneaux 2 et 3 peuvent présenter un même nombre de dents (16 dans le cas présent). Les processus de fabrication des anneaux 2 et 3 peuvent ainsi être extrêmement proches, ce qui réduit leur prix de revient.It may be noted that, according to the invention, the ring 3 does not require additional sector free of marking. Thus, the size of the markings 34 on this ring 3 is increased. Furthermore, it may be noted that for an odd number of dates (31 in this case), the rings 2 and 3 may have the same number of teeth (16 in this case). The manufacturing processes of rings 2 and 3 can thus be extremely close, which reduces their cost price.

La roue de commande 4 comprend en l'occurrence des tôles métalliques découpées formant les étages de dentures 41 et 42. Un rivet 43 permet notamment d'accoupler les étages 41 et 42 et également de guider la roue de commande en rotation par l'intermédiaire de son orifice médian. Une telle structure est à la fois simple et peu coûteuse à fabriquer.The control wheel 4 comprises in this case cut metal sheets forming the toothed stages 41 and 42. A rivet 43 allows in particular to couple the stages 41 and 42 and also to guide the control wheel rotates through its median port. Such a structure is both simple and inexpensive to manufacture.

Bien que l'invention ait été décrite avec des quantièmes correspondant à des jours du mois, l'invention s'applique également à tout autre type de quantième, par exemple les sept jours de la semaine, les semaines de l'année, ou les douze mois de l'année, la roue de commande présentant une portion munie d'un nombre de dents égal à (1+Q)/2, où Q correspond au nombre de quantièmes à afficherAlthough the invention has been described with calendars corresponding to days of the month, the invention also applies to any other type of calendar, for example the seven days of the week, the weeks of the year, or the twelve months of the year, the control wheel having a portion provided with a number of teeth equal to (1 + Q) / 2, where Q corresponds to the number of calendars to be displayed

Bien que l'invention ait été décrite avec deux anneaux de quantième, on peut également envisager qu'un plus grand nombre d'anneaux de quantièmes et d'étages de la roue de commande soient mis en oeuvre dans le cadre de l'invention.Although the invention has been described with two calendar rings, it can also be envisaged that a greater number of date rings and stages of the control wheel are implemented within the scope of the invention.

Claims (12)

  1. Date mechanism (1) for a timepiece, including:
    - at least first (2) and second (3) date rings, rotatably mounted relative to each other, said rings having one surface provided with successive date markings (24, 34), the first date ring (2) having a display window (21), arranged between two successive markings, the first date ring (2) being superposed on the second date ring (3), each of said two date rings (2, 3) having teeth (22, 32) distributed on the periphery thereof, each tooth being associated with a respective marking (24, 34) or with the display window (21);
    - a control wheel (4) for the first and second date rings (2, 3);
    characterized in that the control wheel (4) is provided with first (41) and second (42) superposed tiers of toothings, each toothing tier including one portion provided with adjacent teeth and one tooth-free portion, the tooth-free portion of one tier being arranged vertical to the toothed portion of the other tier, one tooth of the first tier (41) being superposed on one tooth of the second tier (42), the teeth of the first and second tiers (41, 42) of the control wheel (4) respectively driving the first (2) and second (3) date rings via the teeth (22, 32) thereof.
  2. Date mechanism according to claim 1, characterized in that the successive markings (24, 34) of said date rings (2, 3) are reference numerals from 1 to 31.
  3. Date mechanism according to claim 2, characterized in that the first date ring (2) has 15 markings and in that the second date ring (3) has 16 markings.
  4. Date mechanism according to any of claims 2 or 3, characterized in that the control wheel (4) is driven so as to complete one revolution in 31 days.
  5. Date mechanism according to any of the preceding claims, characterized in that the date rings (2, 3) each have a bore (25, 35) in the central part thereof, and in that their teeth (22, 32) project towards the inside of said bore (25, 35).
  6. Date mechanism according to any of the preceding claims, characterized in that the date rings (2, 3) are flat.
  7. Date mechanism according to any of claims 5 or 6, characterized in that the date rings (2, 3) include a cut metal sheet with a bore (25, 35), the sheet metal defining teeth (22, 32) regularly distributed over the periphery of the bore (25, 35), said teeth (22, 32) being driven by the teeth of the control wheel (4).
  8. Date mechanism according to any of the preceding claims, characterized in that a single tooth corresponds to each marking or window carried by the date rings (2, 3), said date rings (2, 3) being driven via said tooth by the control wheel (4).
  9. Date mechanism according to any of the preceding claims, characterized in that the control wheel (4) includes first and second metal sheets cut and secured to each other, the first and second metal sheets forming said first (41) and second (42) respective tiers of toothings.
  10. Date mechanism according to any of the preceding claims, characterized in that the teeth of one toothing tier of the control wheel are regularly spaced.
  11. Date mechanism according to any of the preceding claims, characterized in that it includes first (11), second (12), third (13) and fourth (14) gear reduction wheel sets, respectively coupled between the first (41) and second (42) tiers of toothings and the first and second date rings (2, 3), each wheel set including one wheel (111, 122, 132, 141) and one pinion (112, 121, 132, 142) which are coaxial and secured to each other, the wheels and pinions being rotatably mounted about the same axis.
  12. Watch including a date mechanism according to any of the preceding claims, the watch including:
    - a bottom plate guiding the date mechanism rings in rotation;
    - a plate covering the mechanism secured to the bottom plate, in which an aperture is arranged, so as to display the ring markings in the aperture.
EP08159637A 2008-07-03 2008-07-03 Calendar mechanism for a timepiece Active EP2141556B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP08159637A EP2141556B1 (en) 2008-07-03 2008-07-03 Calendar mechanism for a timepiece
KR20090047268A KR101483799B1 (en) 2008-07-03 2009-05-29 Date mechanism for a timepiece
SG200903835-7A SG158021A1 (en) 2008-07-03 2009-06-04 Date mechanism for a timepiece
US12/492,208 US7835229B2 (en) 2008-07-03 2009-06-26 Date mechanism for a timepiece
JP2009156653A JP5443857B2 (en) 2008-07-03 2009-07-01 Clock date mechanism
CN200910139859.XA CN101620407B (en) 2008-07-03 2009-07-03 Date mechanism for a timepiece
HK10102004.8A HK1135480A1 (en) 2008-07-03 2010-02-25 Date mechanism for a timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08159637A EP2141556B1 (en) 2008-07-03 2008-07-03 Calendar mechanism for a timepiece

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EP2141556A1 EP2141556A1 (en) 2010-01-06
EP2141556B1 true EP2141556B1 (en) 2012-06-27

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EP08159637A Active EP2141556B1 (en) 2008-07-03 2008-07-03 Calendar mechanism for a timepiece

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US (1) US7835229B2 (en)
EP (1) EP2141556B1 (en)
JP (1) JP5443857B2 (en)
KR (1) KR101483799B1 (en)
CN (1) CN101620407B (en)
HK (1) HK1135480A1 (en)
SG (1) SG158021A1 (en)

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US3842590A (en) * 1973-06-28 1974-10-22 Citizen Watch Co Ltd Calendar timepiece
JPH0328357U (en) * 1989-04-24 1991-03-20
DE4127825C1 (en) * 1991-08-22 1992-10-01 Jaeger-Le Coultre S.A., Le Sentier, Ch
WO1998032055A1 (en) * 1997-01-17 1998-07-23 Seiko Epson Corporation Display device and watch with same
SG102647A1 (en) * 2000-12-22 2004-03-26 Ebauchesfabrik Eta Ag Timepiece provided with a date having a large aperture
EP1515201B1 (en) * 2003-09-11 2008-10-29 Richemont International S.A. Date display device
EP1536300B1 (en) * 2003-11-26 2011-06-08 ETA SA Manufacture Horlogère Suisse Calendar mechanism for a watch comprising two superposed date annuli
DE60332637D1 (en) * 2003-11-26 2010-07-01 Eta Sa Mft Horlogere Suisse Calendar mechanism for a watch with two superimposed rings
US7027362B2 (en) * 2003-12-11 2006-04-11 Timex Group B.V. Multifunctional rotating ring in a timepiece
US7289392B2 (en) * 2005-06-17 2007-10-30 Timex Group B.V. Date display assembly for a timepiece
DE602006007855D1 (en) * 2006-09-26 2009-08-27 Eta Sa Mft Horlogere Suisse Movement comprising a mounting plate for a display ring

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CN101620407A (en) 2010-01-06
CN101620407B (en) 2013-02-06
SG158021A1 (en) 2010-01-29
JP5443857B2 (en) 2014-03-19
KR101483799B1 (en) 2015-01-16
EP2141556A1 (en) 2010-01-06
KR20100004856A (en) 2010-01-13
US20100002544A1 (en) 2010-01-07
US7835229B2 (en) 2010-11-16
HK1135480A1 (en) 2010-06-04
JP2010014713A (en) 2010-01-21

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