EP0940833B1 - Calendar mechanism for watch movement - Google Patents

Calendar mechanism for watch movement Download PDF

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Publication number
EP0940833B1
EP0940833B1 EP19980103900 EP98103900A EP0940833B1 EP 0940833 B1 EP0940833 B1 EP 0940833B1 EP 19980103900 EP19980103900 EP 19980103900 EP 98103900 A EP98103900 A EP 98103900A EP 0940833 B1 EP0940833 B1 EP 0940833B1
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EP
European Patent Office
Prior art keywords
date
indicator
units
tens
zero
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.)
Expired - Lifetime
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EP19980103900
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German (de)
French (fr)
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EP0940833A1 (en
Inventor
Edmond Capt
Alain Zaugg
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Frederic Piguet SA
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Frederic Piguet SA
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Publication date
Application filed by Frederic Piguet SA filed Critical Frederic Piguet SA
Priority to EP19980103900 priority Critical patent/EP0940833B1/en
Publication of EP0940833A1 publication Critical patent/EP0940833A1/en
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Publication of EP0940833B1 publication Critical patent/EP0940833B1/en
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    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00Indicating the time by visual means
    • G04B19/24Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247Clocks 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
    • GPHYSICS
    • G04HOROLOGY
    • G04CELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C17/00Indicating the time optically by electric means
    • G04C17/005Indicating the time optically by electric means by discs
    • G04C17/0058Indicating the time optically by electric means by discs with date indication
    • G04C17/0066Indicating the time optically by electric means by discs with date indication electromagnetically driven, e.g. intermittently

Description

La présente invention concerne un mécanisme de quantième pour mouvement d'horlogerie et plus particulièrement un tel mécanisme permettant l'affichage de quantièmes de grandes dimensions, et un montre comprenant un tel mécanisme.The present invention relates to a mechanism for calendar for watch movement and more particularly such a mechanism allowing the display large dates, and a watch comprising such a mechanism.
Les montres-bracelets comportant un dispositif d'affichage de quantièmes à guichets classiques présentent généralement l'inconvénient d'être peu lisibles du fait de la petitesse des guichets et des chiffres décalqués sur les organes indicateurs visibles à travers ces guichets.Wrist watches with a device date display with classic windows generally the disadvantage of being difficult to read due to the small size of the counters and the numbers transferred onto the indicator organs visible through these counters.
On connaít déjà par le brevet CH 342 270 un mécanisme indicateur de quantièmes de grandes dimensions pour montre-calendrier comprenant une roue intermédiaire effectuant deux tours par jour et dont toutes les dents sont tronquées sauf une. Cette dernière agit sur un anneau denté à vingt dents qui porte les chiffres des unités des quantièmes et qui est visible à travers un grand guichet. Chacun de ces chiffres est répété deux fois de suite sur cet anneau. Ainsi un chiffre d'unité quelconque apparu à minuit dans le guichet est remplacé à midi, au deuxième tour de la roue intermédiaire, par un second chiffre identique qui ne disparaítra qu'au minuit suivant pour laisser apparaítre le chiffre d'unité suivant. L'anneau comporte en outre une dent supplémentaire qui, lors du passage du deuxième "zéro" au premier "un" des unités, entraíne d'un pas une étoile à quatre branches portant les chiffres des dizaines des quantièmes, c'est-à-dire les chiffres "zéro", "un", "deux" et "trois".We already know from patent CH 342 270 a mechanism large date indicator for calendar watch including an intermediate wheel performing two rounds a day and all of whose teeth except one. The latter acts on a ring toothed with twenty teeth which bears the numbers of the units of which is visible through a large window. Each of these figures is repeated twice in succession on this ring. Thus any unit figure appeared at midnight in the counter is replaced at noon on the second revolution of the intermediate wheel, by a second digit identical which will not disappear until the next midnight for let appear the following unit figure. The ring further includes an additional tooth which, when passage from the second "zero" to the first "one" of the units, leads with a step a four-pointed star carrying the digits of tens of dates, i.e. digits "zero", "one", "two" and "three".
Avec ce mécanisme, il est toutefois nécessaire d'agir sur l'anneau des unités et sur l'étoile des dizaines en fin de mois pour pouvoir passer respectivement du vingt-huitième, vingt-neuvième et trente et unième jour d'une fin de mois au premier jour du mois suivant. Ceci nécessite donc l'utilisation d'un mécanisme de correction complexe qui doit permettre notamment le déplacement de l'étoile des dizaines d'un pas sans déplacement concomitant de l'anneau des unités. De tels mécanismes nécessitent généralement l'utilisation de dispositifs de débrayage de l'anneau des unités qui compliquent la réalisation de ces mécanismes et les rendent ainsi plus chers et plus volumineux.With this mechanism, however, it is necessary to act on the unit ring and on the tens star in end of the month to be able to move from the twenty-eighth respectively, twenty-ninth and thirty-first day of a end of month on the first day of the following month. This therefore requires the use of a correction mechanism complex which must allow in particular the displacement of the star of the tens of a step without displacement concomitant of the ring of units. Such mechanisms generally require the use of declutching the ring of units that complicate the realization of these mechanisms and thus make them more expensive and larger.
La présente invention a pour but principal de remédier aux inconvénients de l'art antérieur susmentionné en fournissant un mécanisme d'affichage de quantièmes de grandes dimensions et donc plus lisibles, mécanisme qui ne nécessite que des moyens extrêmement simples et que peu de modifications de fabrication du mouvement de base dans lequel il est intégré.The main object of the present invention is to remedy the drawbacks of the aforementioned prior art by providing a date display mechanism of large dimensions and therefore more readable, mechanism that does not requires only extremely simple means and little manufacturing modifications of the basic movement in which it is integrated.
A cet effet, l'invention a pour objet un mécanisme de quantième pour mouvement d'horlogerie selon la revendication 1.To this end, the invention relates to a mechanism for date for watch movement according to claim 1.
Grâce à ces caractéristiques, le mécanisme de quantième selon l'invention permet, d'une part, d'afficher des quantièmes de grandes dimensions et, d'autre part, le passage d'une fin de mois à trente et un jours au premier jour du mois suivant sans agir sur un mécanisme de correction. Dans le cas d'un mois de moins de trente et un jours, le passage d'une fin de mois au premier jour du mois suivant s'effectue en utilisant un mécanisme de correction des quantièmes classiques.Thanks to these characteristics, the date according to the invention allows, on the one hand, to display large calendars and, on the other hand, the change from the end of the month to thirty-one days on the first day of the following month without acting on a correction. In the case of a month of less than thirty-one days, the transition from the end of the month to the first day of following month is done using a mechanism of correction of classic dates.
Selon une caractéristique avantageuse de l'invention, l'organe indicateur des unités est associé à une première denture à trente et une dents qui coopère avec un organe entraíneur, et à une seconde denture comportant quatre dents dont trois dents entraínent l'organe indicateur des dizaines lors du passage du "zéro" d'une graduation de l'organe indicateur des unités au "un" de la graduation suivante, tandis que la quatrième dent entraíne l'organe indicateur des dizaines lors du passage du "un" supplémentaire de la graduation modifiée au "un" suivant.According to an advantageous characteristic of the invention, the unit indicator body is associated with a first toothing with thirty-one teeth which cooperates with an organ coach, and a second toothing having four teeth of which three teeth drive the indicator organ of tens when crossing the "zero" of a graduation of the unit indicating unit at the "one" of the graduation next, while the fourth tooth drives the organ tens indicator when passing "one" additional from the graduation modified to the next "one".
Selon un mode de réalisation préféré, l'organe indicateur des unités consiste en un disque annulaire et les première et deuxième dentures sont des dentures intérieures qui s'étendent dans deux plans différents.According to a preferred embodiment, the organ unit indicator consists of an annular disc and the first and second teeth are teeth interior spaces that extend in two different planes.
D'autres caractéristiques et avantages de la présente invention apparaítront dans la description suivante d'un mode de réalisation préféré, présenté à titre d'exemple non limitatif en référence aux dessins annexés, dans lesquels :
  • la figure 1 est une vue en plan d'une montre équipée d'un mécanisme de quantième selon l'invention;
  • la figure 2 est une vue en plan du mécanisme de quantième selon l'invention;
  • la figure 3 est une demi vue en plan dans laquelle l'organe indicateur des dizaines et l'organe indicateur des unités ont été partiellement arrachés, et
  • la figure 4 est une vue en coupe partielle selon la ligne III-III de la figure 2 du mécanisme de quantième selon l'invention.
Other characteristics and advantages of the present invention will appear in the following description of a preferred embodiment, presented by way of nonlimiting example with reference to the accompanying drawings, in which:
  • Figure 1 is a plan view of a watch equipped with a date mechanism according to the invention;
  • Figure 2 is a plan view of the date mechanism according to the invention;
  • FIG. 3 is a half plan view in which the tens indicator and the units indicator have been partially broken away, and
  • Figure 4 is a partial sectional view along line III-III of Figure 2 of the date mechanism according to the invention.
La montre représentée schématiquement à la figure 1 comporte un mécanisme de quantième désigné par la référence numérique générale 1. La montre comprend également d'autres mécanismes et organes indicateurs. Ceux-ci ne seront toutefois pas décrits ici puisqu'ils sont connus de l'homme du métier et qu'ils ne concernent par directement le mécanisme de quantième selon la présente invention.The watch shown schematically in Figure 1 includes a date mechanism designated by the general numerical reference 1. The watch includes also other indicator mechanisms and organs. These will however not be described here since they are known to those skilled in the art and that they do not relate by directly the date mechanism according to the present invention.
On voit également à la figure 1 que la montre équipée du mécanisme de quantième 1 selon l'invention comprend un cadran 2 muni de deux guichets 4, 6 juxtaposés à six heures qui dans une autre forme d'exécution pourraient être réunis en un seul grand guichet. Le guichet 4 laisse apparaítre un chiffre relatif aux dizaines d'un quantième, tandis que le guichet 6 laisse apparaítre un chiffre relatif aux unités d'un quantième de manière à permettre, suivant leurs positions relatives, l'indication des chiffres de "un" à "trente et un".We also see in Figure 1 that the watch equipped of the date mechanism 1 according to the invention comprises a dial 2 provided with two windows 4, 6 juxtaposed with six hours which in another form of execution could be brought together in one large window. Window 4 leaves appear a figure relating to the tens of a calendar, while the window 6 reveals a number relating to the units of a date so as to allow, according to their relative positions, the indication of digits from "one" to "thirty-one".
Comme cela est visible sur la figure 2, ces chiffres sont portés par deux organes indicateurs 8, 10 différents, respectivement l'organe indicateur des dizaines 8 et l'organe indicateur des unités 10. L'affichage des quantièmes à l'aide de ces deux organes 8, 10 permet ainsi d'augmenter les dimensions respectives des chiffres portés par chacun de ces organes 8 et 10 et de rendre la lecture des quantièmes plus aisée.As can be seen in Figure 2, these numbers are carried by two different indicator members 8, 10, respectively the tens indicator body 8 and the unit indicating unit 10. The display of dates using these two organs 8, 10 thus allows to increase the respective dimensions of the figures carried by each of these bodies 8 and 10 and make the reading easier dates.
L'organe indicateur des dizaines 8 porte une graduation de "zéro" à "trois" ou de "un" à "trois" plus un blanc, et est prévu pour effectuer un pas tous les dix jours. L'organe indicateur des unités 10 porte trois graduations 10a, 10b, et 10c successives de "zéro" à "neuf", la graduation 10c, dite graduation modifiée, ayant un "un" supplémentaire intercalé entre son "zéro" et son "un". L'organe indicateur 8 peut occuper quatre positions différentes, tandis que l'organe indicateur 10 peut occuper trente et une positions différentes.The tens indicator body 8 carries a graduation from "zero" to "three" or from "one" to "three" more one blank, and is scheduled to take one step every ten days. The indicator unit 10 has three successive graduations 10a, 10b, and 10c from "zero" to "new", the 10c graduation, known as modified graduation, having an additional "a" inserted between its "zero" and its "a". The indicator member 8 can occupy four positions different, while the indicator member 10 can occupy thirty-one different positions.
En référence aux figures 2 à 4, on voit que l'organe indicateur des unités 10 consiste en un disque annulaire associé à une première denture intérieure 12 comportant trente et une dents. Un organe entraíneur 14 ayant la forme d'un doigt d'entraínement et appartenant à un mouvement de base M fait classiquement un tour toutes les vingt-quatre heures, entraínant de façon conventionnelle le disque annulaire 10 par action sur la denture 12. Un sautoir (non représenté) solidaire du mouvement de base M agit sur la denture 12 pour maintenir le disque annulaire 10 en place lorsqu'il n'est pas entraíné. L'organe indicateur des unités 10 est également associé à une deuxième denture intérieure 16 comportant quatre dents 16a, 16b, 16c, et 16d. Ces dents sont réparties à la périphérie intérieure du disque annulaire 10 de sorte qu'elles entraínent l'organe indicateur des dizaines 8 lors du passage respectif du "zéro" des graduations 10a, 10b et 10c de l'organe indicateur des unités 10 au "un" de la graduation suivante. La quatrième dent 16d entraíne l'organe indicateur des dizaines 8 lors du passage du "un" supplémentaire de la graduation modifiée 10c au "un" suivant de cette même graduation.Referring to Figures 2 to 4, we see that the organ unit indicator 10 consists of an annular disc associated with a first internal toothing 12 comprising thirty-one teeth. A driving member 14 having the shape of a training finger and belonging to a basic movement M conventionally turns every twenty-four hours, training in a conventional manner the annular disc 10 by action on the teeth 12. A long necklace (not shown) secured to the basic movement M acts on the teeth 12 to hold the annular disc 10 in place when not driven. The organ unit indicator 10 is also associated with a second internal toothing 16 having four teeth 16a, 16b, 16c, and 16d. These teeth are distributed at the inner periphery of the annular disc 10 so that they drive the tens indicator body 8 during the respective passage of the "zero" of the graduations 10a, 10b and 10c from the indicator unit 10 to the "one" of the next graduation. The fourth tooth 16d drives the tens indicator body 8 when passing the "one" additional graduation modified 10c to "one" following this same graduation.
En se référant plus particulièrement à la figure 4, on voit que les dentures 12 et 16 s'étendent dans deux plans différents, la denture 16 coopérant avec une étoile 18 à quatre dents solidaire de l'organe indicateur des dizaines 8, l'étoile 18 étant positionnée par un sautoir 20.With particular reference to Figure 4, we see that the teeth 12 and 16 extend in two different planes, the teeth 16 cooperating with a star 18 with four teeth secured to the indicator member of the tens 8, star 18 being positioned by a jumper 20.
Dans l'exemple illustré, l'organe indicateur des dizaines 8 se déplace au-dessus du disque annulaire 10 et comprend des découpes qui laissent apparaítre le chiffre des unités porté par ledit disque annulaire 10 et devant être affiché à travers le guichet 6. De préférence, l'organe indicateur des dizaines 8 consiste en un disque découpé en forme de croix à quatre branches, les branches portant respectivement les chiffres "zéro", "un", "deux" et "trois" comme cela est illustré, ou "un", "deux", "trois" et un blanc.In the example illustrated, the indicator body of the tens 8 moves above the annular disc 10 and includes cutouts that reveal the number units carried by said annular disc 10 and in front be displayed through window 6. Preferably, the tens indicator 8 consists of a disc cut in the shape of a cross with four branches, the branches marked with the numbers "zero", "one", "two" respectively and "three" as shown, or "one", "two", "three" and a white.
Le mécanisme selon l'invention comprend en outre une plaque-support 22 de l'étoile 18, de la croix des dizaines 8 et du disque annulaire des unités 10. Cette plaque 22 est disposée à la surface du mouvement de base M auquel est associé le mécanisme de quantième selon l'invention. Plus précisément, l'étoile 18 est montée à rotation dans une creusure 24 réalisée dans la surface supérieure 26 de la plaque 22, la croix des dizaines 8, solidaire de l'étoile 18, s'étendant dans une deuxième creusure 28 également réalisée dans la surface 26 et située entre cette surface et le fond de la creusure 24. La plaque 22 comprend également, creusé dans sa surface 26, un chemin annulaire 30 sur lequel se déplace l'organe indicateur des unités 10. Ce chemin annulaire 30 comprend un évidement 32 dans lequel s'étend la denture intérieure 12 pour coopérer avec le doigt d'entraínement 14.The mechanism according to the invention further comprises a support plate 22 of the star 18, of the tens cross 8 and the annular disc of the units 10. This plate 22 is arranged on the surface of the basic movement M at which is associated with the date mechanism according to the invention. More specifically, the star 18 is rotatably mounted in a recess 24 made in the upper surface 26 of plate 22, the tens cross 8, integral with the star 18, extending in a second recess 28 also produced in surface 26 and located between this surface and the bottom of the recess 24. The plate 22 also includes, dug in its surface 26, a path annular 30 on which the indicator member of the units 10. This annular path 30 includes a recess 32 in which the internal teeth 12 extend to cooperate with the training finger 14.
Nous allons maintenant décrire le fonctionnement du mécanisme de quantième selon la présente invention. Le doigt d'entraínement 14 agit une fois par vingt-quatre heures sur la denture 12 pour faire avancer le disque annulaire 10 d'un trente et unième de tour. Ainsi, un chiffre d'une unité quelconque de quantième apparu, par exemple, à minuit dans le guichet 6, sera remplacé lors du passage au minuit suivant par le chiffre qui lui fait suite.We will now describe how the date mechanism according to the present invention. The drive finger 14 acts once every twenty-four hours on toothing 12 to advance the disc annular 10 of a thirty-first of a turn. So a digit of any unit of date appeared, by example, at midnight in window 6, will be replaced when passage at midnight following by the number which makes it after.
Au "dix", "vingt" et "trente" du mois, le doigt d'entraínement 14 agit sur la denture 12, comme décrit ci-dessus, pour faire passer le "neuf" de la graduation des unités correspondante au "zéro" de la graduation suivante, les dents 16a, 16b et 16c de la denture 16 agissant sur l'étoile 18 pour faire simultanément passer le chiffre des dizaines du "zéro" au "un", du "un" au "deux" et du "deux" au "trois" respectivement.At the "ten", "twenty" and "thirty" of the month, the finger drive 14 acts on the teeth 12, as described above, to pass the "nine" of the graduation of units corresponding to "zero" of the following graduation, teeth 16a, 16b and 16c of teeth 16 acting on the star 18 to simultaneously pass the number of tens from "zero" to "one", from "one" to "two" and from "two" to "three" respectively.
On notera à ce propos que dans le mode de réalisation illustré, les dents 16a, 16b, et 16c sont disposées respectivement sensiblement en regard des chiffres "huit" des graduations 10a, 10b, 10c.Note in this regard that in the embodiment illustrated, the teeth 16a, 16b, and 16c are arranged respectively appreciably opposite the figures "eight" graduations 10a, 10b, 10c.
Lors du passage du "trente" au "trente et un", le doigt d'entraínement 14 agit normalement sur la denture 12, comme décrit ci-dessus, et fait passer le "zéro" de la graduation des unités 10b au premier "un" de la graduation des unités 10c, aucune des dents de la denture 16 n'agissant à cet instant sur l'étoile 18, de sorte que la croix 10 reste immobile et affiche toujours le "trois" des dizaines.When changing from "thirty" to "thirty-one", the drive finger 14 acts normally on the teeth 12, as described above, and passes the "zero" of the graduation of units 10b at the first "one" of the graduation of units 10c, none of the teeth of toothing 16 not acting at this moment on the star 18, so that the cross 10 remains stationary and always displays the "three" of tens.
Lors du passage du "trente et un" d'un mois au "un" du mois suivant le doigt d'entraínement 14 agit normalement sur la denture 12, comme décrit ci-dessus, et fait passer le premier "un" de la graduation des unités 10c au deuxième "un" de cette même graduation. Simultanément, la dent 16d de la denture 16 agit sur l'étoile 18 pour faire passer le chiffre "trois" porté par la croix des dizaines 10 au "zéro" ou à une plage d'affichage blanche.When switching from "thirty-one" a month to "one" of the month following the training finger 14 acts normally on toothing 12, as described above, and passes the first "one" of the unit scale 10c on the second "one" of this same graduation. Simultaneously, the tooth 16d of the toothing 16 acts on the star 18 to pass the number "three" carried by the tens cross 10 at "zero" or at a range white display.
On comprend ainsi que le mécanisme de quantième selon l'invention est conçu de sorte que la croix 8 des dizaines effectue un tour par mois selon quatre pas, la même dent de la denture 16 produisant toujours l'affichage du même chiffre, tandis que le disque annulaire effectue un tour tous les trente et un jours.It is thus understood that the date mechanism according to the invention is designed so that the cross 8 tens performs one revolution per month in four steps, the same tooth of the teeth 16 always producing the display of the same figure, while the annular disc makes a turn every thirty-one days.
Dans le cas d'un mois de trente et un jours, le passage du dernier jour de ce mois au "un" du mois suivant peut être effectué à l'aide d'un dispositif de correction 34 à pignon coulant et bascule connu en soi qui agit directement sur la denture 12 du disque annulaire 10. Le dispositif 34 comprend notamment une roue 36 en prise avec un pignon baladeur 38 à trois dents. Dans un premier sens de rotation de la tige de correction 40 partiellement représentée, la roue 36 entraíne le pignon 38 guidé dans un trou oblong (non représenté) pour venir en prise avec la denture 12 du disque annulaire 10. Ce dernier est alors déplacé dans le sens horaire du nombre de pas nécessaire pour faire apparaítre le deuxième "un" de la graduation 10c dans le guichet 6. De façon classique, le pignon 38 est dégagé de la denture 12 lorsque la tige 40 est actionnée dans le sens de rotation opposé au premier sens. On notera que le mécanisme de quantième selon l'invention peut, sans modification majeure, utiliser le dispositif de correction de quantièmes d'un mouvement classique. L'utilisation d'un tel mécanisme de correction permet d'assurer manuellement le passage de la fin d'un mois de moins de trente et un jours au premier jour du mois suivant aisément et rapidement.In the case of a thirty-one day month, the change from the last day of this month to "one" of the following month can be performed using a correction device 34 with sliding pinion and rocker known per se which acts directly on the teeth 12 of the annular disc 10. The device 34 notably comprises a wheel 36 engaged with a sliding pinion 38 with three teeth. In a first sense of rotation of the correction rod 40 partially shown, the wheel 36 drives the pinion 38 guided in an oblong hole (not shown) for engaging with the teeth 12 of the annular disc 10. The latter is then moved clockwise by the number of steps required to bring up the second "one" of the graduation 10c in window 6. Conventionally, the pinion 38 is released from the teeth 12 when the rod 40 is actuated in the opposite direction of rotation to the first direction. It will be noted that the date mechanism according to the invention can, without major modification, use the correction of dates of a classic movement. The use of such a correction mechanism allows manually ensure the passage from the end of a month of less than thirty-one days on the first day of the month following easily and quickly.
Certaines modifications peuvent être apportées au mécanisme de quantième qui vient d'être décrit sans pour autant sortir du cadre de cette invention. Ainsi, par exemple, on pourrait envisager de déplacer l'axe de rotation de la croix 8 des dizaines vers le centre du mouvement M afin qu'elle ne se déplace plus au-dessus du disque annulaire 10, mais vienne se déplacer en juxtaposition de celui-ci. Dans ce cas, le guichet 4 serait bien entendu disposé au-dessus du guichet 6 sur l'axe 12 heures 6 heures.Some changes can be made to the date mechanism which has just been described without as well go beyond the scope of this invention. So by example, we could consider moving the axis of rotation of the cross 8 from the tens towards the center of the movement M so that it no longer moves above the annular disc 10, but comes to move in juxtaposition of it. In this case, window 4 would of course be placed above window 6 on the axis 12 hours 6 hours.

Claims (9)

  1. Date mechanism for a clockwork movement (M) including a member (8) for indicating the tens having four positions carrying a scale from « zero » to « three » or from « one » to « three » plus a blank, arranged for effecting at least one step every ten days, and a member (10) for indicating the units arranged for effecting a step every twenty-four hours, characterized in that the units indicator member (10) can occupy thirty one positions and carries three successive scales from « zero » to « nine », one of the three scales, called the modified scale, having an additional « one » inserted between its « zero » and its « one », in that the units indicator member (10) is formed of an annular disc, in that the mechanism includes a plate (22) mounted on the movement and in that said plate (22) includes on its upper surface an annular path (30) along which said units disc (10) moves.
  2. Date mechanism according to claim 1, characterized in that units indicator member (10) is associated with a first toothing (12) of thirty one teeth which co-operates with a driving member (14), and with a second toothing (16) including four teeth, three of whose teeth drive the tens indicator member (8) during the passage from « zero » of one scale of the units indicator member (10) to the « one » of the following scale, while the fourth tooth drives the tens indicator member (8) during the passage from the additional « one » of the modified scale to the following « one ».
  3. Date mechanism according to claim 2, characterized in that the first and second toothings respectively (12 and 16) are inner toothings which extend in two different planes.
  4. Date mechanism according to claim 2, characterized in that the tens indicator member (8) moves above the units indicator member (10) and includes blanks allowing the units figures which need to be displayed to appear.
  5. Date mechanism according to claim 4, characterized in that units indicator member (10) is formed of a blanked disc in the shape of a cross associated with a star-wheel (18) with four branches which co-operates with said second toothing.
  6. Date mechanism according to claim 5, characterized in that the disc (8) and the star-wheel (18) for the tens are rotatably mounted on said plate (22).
  7. Date mechanism according to claim 6, characterized in that the annular path (30) includes a recess (32) into which the first inner toothing (12) extends to cooperate with said driving element (14).
  8. Date mechanism according to claim 7, characterized in that the first toothing (12) extends below the level of said second toothing (16).
  9. Watch including a clockwork movement (M) above which a dial is mounted, said movement being fitted with a date mechanism including a member (8) for indicating the tens having four positions carrying a scale from « zero » to « three » or from « one » to « three » plus a blank, arranged for effecting at least one step every ten days, and a member (10) for indicating the units arranged for effecting a step every twenty-four hours, the mechanism appearing through an aperture provided in said dial, characterized in that the units indicator member (10) can occupy thirty one positions and carries three successive scales from « zero » to « nine », one of the three scales, called the modified scale, having an additional « one » inserted between its « zero » and its « one » and in that said aperture is provided outside the position at 12 o'clock.
EP19980103900 1998-03-05 1998-03-05 Calendar mechanism for watch movement Expired - Lifetime EP0940833B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19980103900 EP0940833B1 (en) 1998-03-05 1998-03-05 Calendar mechanism for watch movement

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP19980103900 EP0940833B1 (en) 1998-03-05 1998-03-05 Calendar mechanism for watch movement
DE1998606337 DE69806337T2 (en) 1998-03-05 1998-03-05 Calendar mechanism for clockwork
US09/259,256 US6081483A (en) 1998-03-05 1999-03-01 Date mechanism for clockwork movement
JP05803499A JP4307613B2 (en) 1998-03-05 1999-03-05 Date mechanism for clock movement

Publications (2)

Publication Number Publication Date
EP0940833A1 EP0940833A1 (en) 1999-09-08
EP0940833B1 true EP0940833B1 (en) 2002-07-03

Family

ID=8231537

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980103900 Expired - Lifetime EP0940833B1 (en) 1998-03-05 1998-03-05 Calendar mechanism for watch movement

Country Status (4)

Country Link
US (1) US6081483A (en)
EP (1) EP0940833B1 (en)
JP (1) JP4307613B2 (en)
DE (1) DE69806337T2 (en)

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Also Published As

Publication number Publication date
EP0940833A1 (en) 1999-09-08
US6081483A (en) 2000-06-27
JP4307613B2 (en) 2009-08-05
DE69806337D1 (en) 2002-08-08
DE69806337T2 (en) 2003-06-05
JP2000065957A (en) 2000-03-03

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