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EP1536300B1 - Calendar mechanism for a watch comprising two superposed date annuli - Google Patents

Calendar mechanism for a watch comprising two superposed date annuli Download PDF

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Publication number
EP1536300B1
EP1536300B1 EP03027147A EP03027147A EP1536300B1 EP 1536300 B1 EP1536300 B1 EP 1536300B1 EP 03027147 A EP03027147 A EP 03027147A EP 03027147 A EP03027147 A EP 03027147A EP 1536300 B1 EP1536300 B1 EP 1536300B1
Authority
EP
European Patent Office
Prior art keywords
ring
date
teeth
rings
markings
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
Application number
EP03027147A
Other languages
German (de)
French (fr)
Other versions
EP1536300A1 (en
Inventor
Roger Willemin
Roger Metzger
Marco Bettelini
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 SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP03027147A priority Critical patent/EP1536300B1/en
Priority to SG200407199A priority patent/SG112095A1/en
Priority to TW093135280A priority patent/TW200519554A/en
Priority to KR1020040093756A priority patent/KR101093184B1/en
Priority to US10/991,489 priority patent/US6934221B2/en
Priority to CN2004100917318A priority patent/CN1621974B/en
Priority to JP2004341920A priority patent/JP4537183B2/en
Publication of EP1536300A1 publication Critical patent/EP1536300A1/en
Priority to HK05109891.6A priority patent/HK1077884A1/en
Application granted granted Critical
Publication of EP1536300B1 publication Critical patent/EP1536300B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G04B19/25Devices for setting the date indicators manually
    • 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
    • G04B19/253Driving or releasing mechanisms
    • G04B19/25306Independent date indicating devices activated by hand or by clockwork, e.g. calendar watches
    • 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
    • G04B19/253Driving or releasing mechanisms
    • G04B19/25333Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25353Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
    • G04B19/25366Driving 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 present invention relates to a date mechanism with a large date comprising two superposed calendar rings, respectively upper and lower, one of which carries fifteen successive markings of a cycle of 31 positions, while the other carries the other sixteen markings.
  • Counter metering and cyclic display devices used in calendar timepieces for displaying the date are already known.
  • the analog display of the date is conventionally made using a date ring which comprises 31 sectors bearing the markings from 1 to 31.
  • a date ring which comprises 31 sectors bearing the markings from 1 to 31.
  • such a device has the disadvantage of not offering, for each sector, a field whose size corresponds to a 31 th of the circumference of the ring.
  • the dimensions of this field are insufficient to allow an easily readable date display.
  • the need for a device to display a "large date" on a field much wider than a 31 th circumference has been felt.
  • the Brandi patent teaches a date mechanism mainly comprising a date ring greater than sixteen sectors, superimposed on a lower ring having seventeen sectors.
  • the upper ring covers fifteen of its sectors markings "17" to "31” while the last sector is equipped with a window.
  • the lower ring has on sixteen of its sectors the markings "1" to "16", while the last sector is free of marking.
  • the inner circumference of the two rings has teeth, a location for the upper ring, and a location for the lower ring being toothless.
  • a date training finger typically making a turn every twenty-four hours, drives the calendar rings in a conventional manner, by action on their teeth.
  • the position of the driving finger relative to the teeth of the rings is such that when a ring has its free position (aperture for the upper ring and unmarked sector for the lower ring), at the display location of the shows, the drive finger is in front of the tooth-free position of the concerned ring.
  • the Brandi patent provides a date mechanism for a timepiece which advantageously makes it possible to give the date indication a large format, substantially twice that of a conventional date mechanism.
  • two jumper locking devices act respectively on the teeth of the upper ring and on the teeth of the lower ring.
  • these jumpers must be double top and support the tips of three successive teeth.
  • These jumpers must be large and therefore bulky.
  • the mechanical characteristics of the retention exerted by the jumpers on the two date rings are different depending on whether the missing tooth is in first, second or third position vis-à-vis said jumpers. We must therefore find a compromise that ensures that, whatever the position of the missing tooth, the jumper ensures a satisfactory positioning of the ring concerned. Such jumpers are therefore difficult to develop.
  • the object of the present invention is to overcome the aforementioned drawbacks as well as others by providing a date mechanism making it possible to give the date indication a large format, this mechanism comprising two superposed rings, respectively upper and lower, one of which carries fifteen successive markings of a cycle of 31 positions, while the other carries the other sixteen markings, a device for arresting by jumping effect to properly position the two rings.
  • the present invention relates to a date mechanism for a timepiece such as a wristwatch comprising two superposed, respectively lower and upper, date rings whose surface is divided into a plurality of sectors, the ring comprising fifteen sectors, fifteen of which respectively bear fifteen successive markings of a cycle of 31 positions and of which the sixteenth is a surplus sector having an open or transparent window, while the lower ring comprises seventeen sectors, of which sixteen respectively the other sixteen markings of the cycle of 31 positions and of which the seventeenth is a surplus sector, each of these rings being provided respectively with a peripheral toothing made of a succession of regularly spaced teeth and cooperating with means of training of in such a way that the markings of the lower ring appear successively in a zone display through the window, the upper ring remaining stationary, and that, the lower ring being stationary, the markings of the upper ring appear successively in the display area, the upper ring covering the markings of the lower ring, the date mechanism further comprising a jumper device able to stop each ring in any desired position
  • the present invention provides a date mechanism for a timepiece comprising a jumper device that is simple to manufacture and allows the two date rings to be properly positioned.
  • the jumpers according to the invention are constantly housed between two successive teeth of the toothing of each of the rings even during the passage of the thinned tooth.
  • the jumpers according to the invention are therefore classically terminated by two inclined planes that support between the tips of two teeth immediately successive to maintain the date ring concerned in the desired position. These jumpers are therefore of conventional design and exert on the calendar rings a constant intensity of retention force, regardless of the position of said rings.
  • the present invention proceeds from the general inventive idea of providing a date mechanism for a timepiece whose jumper device comprises two jumper space saving, simple to manufacture and ensuring proper positioning of the date discs.
  • This result is achieved thanks to the fact that, contrary to the prior art where, due to the fact that a place in the toothing of each of the calendar rings is toothless, the jumpers must cooperate with three successive teeth of the toothing. of each of the rings to ensure the positioning of these rings, even when passing the missing tooth, according to the invention the missing tooth is replaced by a thinned tooth.
  • This thinned tooth plays the same role as the missing tooth, namely to define an extended rest position for the date ring concerned when it has its free position at the display location of the watch, but allows to guarantee that the jumper will be constantly housed between two immediately consecutive teeth of the toothing of said ring.
  • These jumpers are therefore of conventional type and exert on the calendar rings a constant retaining force, even during the passage of the thinned tooth.
  • the figure 1 is a top view of a watch movement comprising a date mechanism according to the invention.
  • the movement is mounted in a casing ring 2.
  • the date mechanism according to the invention mainly comprises an upper date ring 4 superimposed on a lower date ring 6.
  • upper date ring 4 has sixteen sectors, while the lower date ring 6 has seventeen sectors.
  • the upper ring 4 covers fifteen of its sectors markings "17" to "31" while the last sector is provided with an open or transparent window 8.
  • the lower ring 6 has meanwhile on sixteen of its sectors the markings "1" to "16" while the last sector is free marking.
  • the inner circumference of the rings 4 and 6 has a toothing formed of a succession of regularly spaced teeth designated by 10 for the upper ring 4 and by 12 for the lower ring 6.
  • a location of the teeth of the rings upper 4 and lower 6 is provided with a thinned tooth designated respectively by 14 and 16.
  • the term "thinned tooth” means a tooth whose height, considered in the direction perpendicular to the plane in which the date rings 4 and 6 extend, is smaller than those of the teeth that precede and follow it.
  • a date drive wheel 18 typically making a turn every twenty-four hours, drives the date rings 4 and 6 in a conventional manner, by action on the teeth 10 or 12.
  • the position of the wheel of drive 18 relative to the teeth of the rings 4 and 6 is such that, when one of these rings has its free position (window 8 for the upper ring 4 and sector free of marking for the lower ring 6) to the display position 20 of the watch movement 1 (dial counter supposed to be removed and which would occupy the position where the number "16" is seen), the drive wheel 18 is in front of the thinned tooth 14 or 16 of the ring concerned.
  • a jumper device 22 comprising two jumpers 24 and 26 acts on the teeth 10 of the upper ring 4 and on the teeth 12 of the lower ring 6.
  • the jumpers must cooperate with three successive teeth of the teeth of each of the rings to ensure the positioning of these rings even when passing the missing tooth
  • the present invention proposes to replace the missing tooth by a thinned tooth, that is to say, lower than the other teeth disposed along the inner periphery of the upper date ring 4 and lower 6.
  • the thinned tooth according to the invention plays the same role as the missing tooth according to the prior art, namely to define an extended rest position for the date ring concerned when it present e its free position at the display location 20 of the watch, but ensures, by its presence, that the jumper will be constantly housed between two immediately consecutive teeth of the toothing of said ring.
  • the date rings 4 and 6 each have an abutment 28 and 30, respectively.
  • figures 2 and 3 show the detail of this arrangement.
  • the stop 28 extends perpendicular to the plane of the upper date ring 4, while the stop 30 extends radially out of the outer perimeter of the lower date ring 6.
  • the upper date ring 4 has its window 8 at the display location 20, and simultaneously its thinned tooth 14 vis-à-vis the drive wheel 18. It will be understood that the height of the thinned tooth 14 is such that the drive wheel 18 can not mesh with this tooth and drives only the lower date ring 6 which, to achieve the position shown, was successively conducted by the drive wheel 18 in the situations where it exposed the markings "11", “12”, ..., "15” and finally "16". At the moment when the marking "16" appears, the stop 30 comes to bear against the stop 28.
  • the upper ring 4 will also be driven, so that the window 8 will disappear from the display location 20, to make room for the marking "17" of the upper ring "4".
  • the lower ring 6 which will present its thinned tooth 16 in front of the drive wheel 18.
  • the height of the thinned tooth 16 is such that the wheel of drive 18 can meshing with this tooth 16 and drives only the upper date ring 4.
  • the figure 5 is an exploded view of the movement 1 provided with the date mechanism according to the invention.
  • This movement 1 comprises a plate 32 which supports and guides in rotation the two lower and upper date rings 6 and 4.
  • In the center of the plate 32 stands conventionally the axis of the hour wheel 34 on which is engaged the hour wheel. 36.
  • a bridge 38 carries the stop device 22 provided with its two jumpers 24 and 26 which respectively act on the upper date ring 4 and on the lower date ring 6.
  • the drive wheel 18 comprises a wheel 40 driven, via a gear reducer not shown, by the hour wheel 34 so as to perform a complete revolution in twenty-four hours.
  • Two fingers 42 and 44 are fixed, for example by welding, on the wheel 40.
  • the drive wheel 18 is freely mounted on an axis 46 of the bridge 38.
  • the date mechanism according to the invention is held axially on the plate 32 by means of a holding plate 48 fixed with screws. 50.
  • the figure 6 is a developed representation of the teeth of the upper date ring 4 and lower 6.
  • the upper date ring 4 has sixteen teeth identified by the numerals 1,2, ... ., 15 and 16, while the lower date ring 6 comprises seventeen teeth identified by the numerals 1, 2, ..., 16 and 17.
  • the upper ring 4 therefore has 16 divisions, while the lower ring 6 has 17 divisions.
  • the teeth 10 and 12 respectively of the upper 4 and lower 6 rings are offset with respect to each other.
  • the positions of the tapered teeth 14 and 16 of the upper 4 and lower 6 rings are marked by circles in solid lines.
  • the position of the drive wheel 18 vis-à-vis the teeth of the upper 4 and lower 6 rings is marked by the line segment AA.
  • the two jumpers 24 and 26 are represented by two rectangles which bear the same numerical references. As can be seen from the drawing, the height of the two jumpers 24 and 26 is equal to the thickness of the teeth 10 and 12.
  • the upper date ring 4 has its thinned tooth 14 facing the drive wheel 18.
  • This position corresponds to the situation in which the upper ring 4 has its window 8 at the display location 20 of the movement and reveals the number "16" carried by the lower ring (see also figure 4 ).
  • the stop 30 of the lower date ring 6 comes into abutment against the stop 28 of the upper ring 4.
  • the upper ring 4 will also be driven. It will then be the lower ring 6 which will present its thinned tooth 16 facing the drive wheel 18, while the thinned tooth 14 of the upper ring 4 will have advanced one step.
  • the height of the two jumpers 24 and 26 is substantially equal to the thickness of the teeth 10 and 12, so that even when passage of the thinned tooth, respectively 14 or 16, said jumpers are always engaged between two immediately consecutive teeth of the upper and lower disc teeth, ensuring proper positioning of these discs.

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

Description

La présente invention concerne un mécanisme de quantième à grande date comprenant deux anneaux de quantième superposés, respectivement supérieur et inférieur, dont l'un porte quinze marquages successifs d'un cycle de 31 positions, tandis que l'autre porte les seize autres marquages.The present invention relates to a date mechanism with a large date comprising two superposed calendar rings, respectively upper and lower, one of which carries fifteen successive markings of a cycle of 31 positions, while the other carries the other sixteen markings.

Des dispositifs de comptage et d'affichage cyclique à guichet utilisés dans des pièces d'horlogerie à calendrier pour l'affichage du quantième sont déjà connus. Habituellement, l'affichage analogique du quantième est classiquement réalisé à l'aide d'un anneau de quantième qui comporte 31 secteurs portant les marquages de 1 à 31. Un tel dispositif présente toutefois l'inconvénient de n'offrir, pour chaque secteur, qu'un champ dont la dimension correspond à un 31ème de la circonférence de l'anneau. En particulier dans les montres-bracelets de petits formats, les dimensions de ce champ sont insuffisantes pour permettre un affichage de quantième aisément lisible. Le besoin d'un dispositif permettant l'affichage d'un "grand quantième" sur un champ nettement plus large qu'un 31ème de circonférence s'est donc fait sentir.Counter metering and cyclic display devices used in calendar timepieces for displaying the date are already known. Usually, the analog display of the date is conventionally made using a date ring which comprises 31 sectors bearing the markings from 1 to 31. However, such a device has the disadvantage of not offering, for each sector, a field whose size corresponds to a 31 th of the circumference of the ring. Especially in small format wristwatches, the dimensions of this field are insufficient to allow an easily readable date display. The need for a device to display a "large date" on a field much wider than a 31 th circumference has been felt.

Une première solution à ce problème a été apportée par la demande de brevet suisse CH 660 941 au nom de Brandi dont le but est de fournir un dispositif de comptage et d'affichage cyclique à guichet pour quantième de montre qui, tout en étant purement mécanique et d'une configuration simple, permet de donner à l'indication de quantième un grand format, au moins approximativement double de celui d'un 31ème de circonférence.A first solution to this problem has been provided by the Swiss patent application CH 660 941 in the name of Brandi whose purpose is to provide a counting device and cyclic display window for a watch date which, while being purely mechanical and simple configuration, makes it possible to give the date indication a great deal format, at least approximately double that of a 31 th of circumference.

A cet effet, le brevet Brandi enseigne un mécanisme de quantième comportant principalement un anneau de quantième supérieur à seize secteurs, superposé à un anneau inférieur comportant dix-sept secteurs. L'anneau supérieur porte sur quinze de ses secteurs les marquages "17" à "31" tandis que le dernier secteur est muni d'une fenêtre. L'anneau inférieur comporte sur seize de ses secteurs les marquages "1" à "16", tandis que le dernier secteur est libre de marquage. La circonférence intérieure des deux anneaux comporte des dents, un endroit pour l'anneau supérieur et un endroit pour l'anneau inférieur étant dépourvu de dent. Un doigt d'entraînement de quantième, faisant classiquement un tour toutes les vingt-quatre heures, entraîne les anneaux de quantième d'une façon classique, par action sur leurs dents. La position du doigt entraîneur par rapport à la denture des anneaux est telle que, lorsqu'un anneau présente sa position libre (guichet pour l'anneau supérieur et secteur exempt de marquage pour l'anneau inférieur), à l'endroit d'affichage de la montre, le doigt d'entraînement se trouve en face de la position exempte de dent de l'anneau concerné.For this purpose, the Brandi patent teaches a date mechanism mainly comprising a date ring greater than sixteen sectors, superimposed on a lower ring having seventeen sectors. The upper ring covers fifteen of its sectors markings "17" to "31" while the last sector is equipped with a window. The lower ring has on sixteen of its sectors the markings "1" to "16", while the last sector is free of marking. The inner circumference of the two rings has teeth, a location for the upper ring, and a location for the lower ring being toothless. A date training finger, typically making a turn every twenty-four hours, drives the calendar rings in a conventional manner, by action on their teeth. The position of the driving finger relative to the teeth of the rings is such that when a ring has its free position (aperture for the upper ring and unmarked sector for the lower ring), at the display location of the shows, the drive finger is in front of the tooth-free position of the concerned ring.

Le brevet Brandi procure un mécanisme de quantième pour pièce d'horlogerie qui permet avantageusement de donner à l'indication de quantième un grand format, sensiblement le double de celui d'un mécanisme de quantième classique. Il se pose néanmoins un problème au niveau du positionnement des anneaux de quantième. En effet, conformément au brevet Brandi, deux dispositifs d'arrêtage par effet de sautoir agissent respectivement sur les dents de l'anneau supérieur et sur les dents de l'anneau inférieur. Mais, compte tenu du fait qu'un endroit de la denture de chacun de ces anneaux est dépourvu de dent, ces sautoirs doivent être à double sommet et appuient sur les pointes de trois dents successives. Ces sautoirs doivent donc être de grandes dimensions et sont donc encombrants. D'autre part, les caractéristiques mécaniques de la retenue exercée par les sautoirs sur les deux anneaux de quantième sont différentes selon que la dent manquante est en première, seconde ou troisième position vis-à-vis desdits sautoirs. Il faut donc trouver un compromis qui garantisse que, quelle que soit la position de la dent manquante, le sautoir assure un positionnement satisfaisant de l'anneau concerné. De tels sautoirs sont donc difficiles à mettre au point.The Brandi patent provides a date mechanism for a timepiece which advantageously makes it possible to give the date indication a large format, substantially twice that of a conventional date mechanism. However, there is a problem in the positioning of the date rings. In fact, according to the Brandi patent, two jumper locking devices act respectively on the teeth of the upper ring and on the teeth of the lower ring. But, considering that a place of the teeth of each of these rings is toothless, these jumpers must be double top and support the tips of three successive teeth. These jumpers must be large and therefore bulky. On the other hand, the mechanical characteristics of the retention exerted by the jumpers on the two date rings are different depending on whether the missing tooth is in first, second or third position vis-à-vis said jumpers. We must therefore find a compromise that ensures that, whatever the position of the missing tooth, the jumper ensures a satisfactory positioning of the ring concerned. Such jumpers are therefore difficult to develop.

La présente invention a pour but de remédier aux inconvénients susmentionnés ainsi qu'à d'autres encore en procurant un mécanisme de quantième permettant de donner à l'indication de quantième un grand format, ce mécanisme comprenant deux anneaux superposés, respectivement supérieur et inférieur, dont l'un porte quinze marquages successifs d'un cycle de 31 positions, tandis que l'autre porte les seize autres marquages, un dispositif d'arrêtage par effet de sautoir permettant de positionner adéquatement les deux anneaux.The object of the present invention is to overcome the aforementioned drawbacks as well as others by providing a date mechanism making it possible to give the date indication a large format, this mechanism comprising two superposed rings, respectively upper and lower, one of which carries fifteen successive markings of a cycle of 31 positions, while the other carries the other sixteen markings, a device for arresting by jumping effect to properly position the two rings.

A cet effet, la présente invention concerne un mécanisme de quantième pour pièce d'horlogerie telle qu'une montre-bracelet comprenant deux anneaux de quantième superposés, respectivement inférieur et supérieur, dont la surface se répartit en une pluralité de secteurs, l'anneau supérieur comprenant seize secteurs, dont quinze portent respectivement quinze marquages successifs d'un cycle de 31 positions et dont le seizième est un secteur excédentaire présentant une fenêtre ouverte ou transparente, alors que l'anneau inférieur comprend dix-sept secteurs, dont seize portent respectivement les seize autres marquages du cycle de 31 positions et dont le dix-septième est un secteur excédentaire, chacun de ces anneaux étant muni respectivement d'une denture périphérique faite d'une succession de dents régulièrement espacées et coopérant avec des moyens d'entraînement de telle manière que les marquages de l'anneau inférieur apparaissent successivement dans une zone d'affichage au travers de la fenêtre, l'anneau supérieur restant immobile, puis que, l'anneau inférieur étant immobile, les marquages de l'anneau supérieur apparaissent successivement dans la zone d'affichage, l'anneau supérieur recouvrant les marquages de l'anneau inférieur, le mécanisme de quantième comprenant en outre un dispositif d'arrêtage par effet de sautoir apte à arrêter chaque anneau en toute position voulue, le dispositif d'arrêtage étant adapté au pas de l'anneau particulier concerné, ledit mécanisme de quantième étant caractérisé en ce qu'un endroit de l'anneau supérieur et un endroit de l'anneau inférieur sont pourvus chacun d'une dent amincie moins haute que les autres dents, située entre deux dents successives de la denture de l'anneau concerné, la position des moyens d'entraînement par rapport à la denture des anneaux étant telle que lorsque l'un desdits anneaux présente son secteur excédentaire à l'endroit de la zone d'affichage, la dent amincie de cet anneau se trouve vis-à-vis des moyens d'entraînement de sorte que lesdits moyens d'entraînement entraînent uniquement l'autre anneau, les dents amincies étant agencées de telle sorte qu'elles ne gênent pas le mouvement des moyens d'entraînement et permettent au dispositif d'arrêtage d'être constamment logé entre deux dents successives de chacun des anneaux.For this purpose, the present invention relates to a date mechanism for a timepiece such as a wristwatch comprising two superposed, respectively lower and upper, date rings whose surface is divided into a plurality of sectors, the ring comprising fifteen sectors, fifteen of which respectively bear fifteen successive markings of a cycle of 31 positions and of which the sixteenth is a surplus sector having an open or transparent window, while the lower ring comprises seventeen sectors, of which sixteen respectively the other sixteen markings of the cycle of 31 positions and of which the seventeenth is a surplus sector, each of these rings being provided respectively with a peripheral toothing made of a succession of regularly spaced teeth and cooperating with means of training of in such a way that the markings of the lower ring appear successively in a zone display through the window, the upper ring remaining stationary, and that, the lower ring being stationary, the markings of the upper ring appear successively in the display area, the upper ring covering the markings of the lower ring, the date mechanism further comprising a jumper device able to stop each ring in any desired position, the stop device being adapted to the pitch of the particular ring concerned, said mechanism of calendar being characterized in that a location of the upper ring and a location of the lower ring are each provided with a lower tapered tooth than the other teeth, located between two successive teeth of the toothing of the ring concerned , the position of the drive means relative to the teeth of the rings being such that when one of said rings has its surplus sector at the location of the display area, the den The thinning of this ring is opposite to the drive means so that said driving means drive only the other ring, the thinned teeth being arranged in such a way that they do not interfere with the movement of the means. drive and allow the stop device to be constantly housed between two successive teeth of each of the rings.

Grâce à ces caractéristiques, la présente invention procure un mécanisme de quantième pour pièce d'horlogerie comprenant un dispositif d'arrêtage par effet de sautoir simple à fabriquer et permettant un positionnement adéquat des deux anneaux de quantième. En effet, contrairement à l'art antérieur où, en raison du fait qu'un endroit de la denture de chacun des anneaux de quantième était dépourvu de dent, les sautoirs devaient être à double sommet et appuyer entre les pointes de trois dents successives, les sautoirs selon l'invention sont constamment logés entre deux dents successives de la denture de chacun des anneaux même lors du passage de la dent amincie. Les sautoirs selon l'invention se terminent donc classiquement par deux plans inclinés qui appuient entre les pointes de deux dents immédiatement successives pour maintenir l'anneau de quantième concerné dans la position voulue. Ces sautoirs sont donc de conception classique et exercent sur les anneaux de quantième une force de retenue d'intensité constante, quelle que soit la position desdits anneaux.Thanks to these features, the present invention provides a date mechanism for a timepiece comprising a jumper device that is simple to manufacture and allows the two date rings to be properly positioned. Indeed, unlike the prior art where, because a location of the teeth of each of the calendar rings was toothless, the jumpers had to be double top and press between the tips of three successive teeth, the jumpers according to the invention are constantly housed between two successive teeth of the toothing of each of the rings even during the passage of the thinned tooth. The jumpers according to the invention are therefore classically terminated by two inclined planes that support between the tips of two teeth immediately successive to maintain the date ring concerned in the desired position. These jumpers are therefore of conventional design and exert on the calendar rings a constant intensity of retention force, regardless of the position of said rings.

D'autres caractéristiques et avantages de la présente invention ressortiront plus clairement de la description détaillée qui suit d'un mode de réalisation du mécanisme de quantième selon l'invention, cet exemple étant donné à titre purement illustratif et non limitatif seulement, en liaison avec le dessin annexé sur lequel :

  • la figure 1 est une vue de dessus d'une boîte de montre comprenant un mécanisme de quantième conforme à l'invention;
  • la figure 2 est une vue en perspective de l'anneau de quantième supérieur;
  • la figure 3 est une vue en perspective de l'anneau de quantième inférieur;
  • la figure 4 est une vue analogue à celle des figures 2 et 3, les anneaux de quantième inférieur et supérieur étant superposés;
  • la figure 5 est une vue éclatée du mécanisme de quantième, et
  • la figure 6 est une représentation schématique des dentures périphériques des anneaux de quantième inférieur et supérieur.
Other features and advantages of the present invention will emerge more clearly from the detailed description which follows of an embodiment of the date mechanism according to the invention, this example being given purely by way of illustration and not only in connection with the appended drawing in which:
  • the figure 1 is a top view of a watch case comprising a date mechanism according to the invention;
  • the figure 2 is a perspective view of the upper date ring;
  • the figure 3 is a perspective view of the lower date ring;
  • the figure 4 is a view similar to that of figures 2 and 3 the lower and upper date rings being superimposed;
  • the figure 5 is an exploded view of the date mechanism, and
  • the figure 6 is a schematic representation of the peripheral teeth of the lower and upper date rings.

La présente invention procède de l'idée générale inventive consistant à procurer un mécanisme de quantième pour pièce d'horlogerie dont le dispositif d'arrêtage par effet sautoir comprend deux sautoirs peu encombrants, simples à fabriquer et garantissant un positionnement adéquat des disques de quantième. Ce résultat est atteint grâce au fait que, contrairement à l'art antérieur où, en raison du fait qu'un endroit de la denture de chacun des anneaux de quantième est dépourvu de dent, les sautoirs doivent coopérer avec trois dents successives de la denture de chacun des anneaux pour garantir le positionnement de ces anneaux, même lors du passage de la dent manquante, selon l'invention la dent manquante est remplacée par une dent amincie. Cette dent amincie joue le même rôle que la dent manquante, à savoir définir une position de repos prolongé pour l'anneau de quantième concerné lorsque celui-ci présente sa position libre à l'endroit d'affichage de la montre, mais permet de garantir que le sautoir sera constamment logé entre deux dents immédiatement consécutives de la denture dudit anneau. Ces sautoirs sont donc de type classique et exercent sur les anneaux de quantième une force de retenue constante, même lors du passage de la dent amincie.The present invention proceeds from the general inventive idea of providing a date mechanism for a timepiece whose jumper device comprises two jumper space saving, simple to manufacture and ensuring proper positioning of the date discs. This result is achieved thanks to the fact that, contrary to the prior art where, due to the fact that a place in the toothing of each of the calendar rings is toothless, the jumpers must cooperate with three successive teeth of the toothing. of each of the rings to ensure the positioning of these rings, even when passing the missing tooth, according to the invention the missing tooth is replaced by a thinned tooth. This thinned tooth plays the same role as the missing tooth, namely to define an extended rest position for the date ring concerned when it has its free position at the display location of the watch, but allows to guarantee that the jumper will be constantly housed between two immediately consecutive teeth of the toothing of said ring. These jumpers are therefore of conventional type and exert on the calendar rings a constant retaining force, even during the passage of the thinned tooth.

La figure 1 est une vue de dessus d'un mouvement de montre comprenant un mécanisme de quantième conforme à l'invention. Désigné dans son ensemble par la référence numérique générale 1, le mouvement est monté dans un cercle d'encageage 2. Le mécanisme de quantième selon l'invention comprend principalement un anneau de quantième supérieur 4 superposé à un anneau de quantième inférieur 6. L'anneau de quantième supérieur 4 comporte seize secteurs, tandis que l'anneau de quantième inférieur 6 a dix-sept secteurs. Comme on peut le constater à l'examen de la figure 1 et mieux encore à l'examen des figures 2 et 3, l'anneau supérieur 4 porte sur quinze de ses secteurs les marquages "17" à "31" tandis que le dernier secteur est muni d'une fenêtre 8 ouverte ou transparente. L'anneau inférieur 6 comporte quant à lui sur seize de ses secteurs les marquages "1" à "16" tandis que le dernier secteur est libre de marquage.The figure 1 is a top view of a watch movement comprising a date mechanism according to the invention. Designated as a whole by the general numerical reference 1, the movement is mounted in a casing ring 2. The date mechanism according to the invention mainly comprises an upper date ring 4 superimposed on a lower date ring 6. upper date ring 4 has sixteen sectors, while the lower date ring 6 has seventeen sectors. As can be seen from the examination of the figure 1 and better still in the examination of figures 2 and 3 , the upper ring 4 covers fifteen of its sectors markings "17" to "31" while the last sector is provided with an open or transparent window 8. The lower ring 6 has meanwhile on sixteen of its sectors the markings "1" to "16" while the last sector is free marking.

La circonférence intérieure des anneaux 4 et 6 comporte une denture formée d'une succession de dents régulièrement espacées désignées par 10 pour l'anneau supérieur 4 et par 12 pour l'anneau inférieur 6. Un endroit de la denture des anneaux supérieur 4 et inférieur 6 est pourvu d'une dent amincie désignée respectivement par 14 et 16. On entend par dent amincie une dent dont la hauteur, considérée selon la direction perpendiculaire au plan dans lequel s'étendent les anneaux de quantième 4 et 6, est inférieure à celles des dents qui la précèdent et qui la suivent.The inner circumference of the rings 4 and 6 has a toothing formed of a succession of regularly spaced teeth designated by 10 for the upper ring 4 and by 12 for the lower ring 6. A location of the teeth of the rings upper 4 and lower 6 is provided with a thinned tooth designated respectively by 14 and 16. The term "thinned tooth" means a tooth whose height, considered in the direction perpendicular to the plane in which the date rings 4 and 6 extend, is smaller than those of the teeth that precede and follow it.

Une roue d'entraînement de quantième 18, faisant classiquement un tour toutes les vingt-quatre heures, entraîne les anneaux de quantième 4 et 6 d'une façon classique, par action sur les dents 10 ou 12. La position de la roue d'entraînement 18 par rapport à la denture des anneaux 4 et 6 est telle que, lorsqu'un de ces anneaux présente sa position libre (fenêtre 8 pour l'anneau supérieur 4 et secteur exempt de marquage pour l'anneau inférieur 6) à l'endroit d'affichage 20 du mouvement de montre 1 (guichet du cadran supposé enlevé et qui occuperait la position où l'on voit le chiffre "16"), la roue d'entraînement 18 se trouve en face de la dent amincie 14 ou 16 de l'anneau concerné.A date drive wheel 18, typically making a turn every twenty-four hours, drives the date rings 4 and 6 in a conventional manner, by action on the teeth 10 or 12. The position of the wheel of drive 18 relative to the teeth of the rings 4 and 6 is such that, when one of these rings has its free position (window 8 for the upper ring 4 and sector free of marking for the lower ring 6) to the display position 20 of the watch movement 1 (dial counter supposed to be removed and which would occupy the position where the number "16" is seen), the drive wheel 18 is in front of the thinned tooth 14 or 16 of the ring concerned.

Un dispositif d'arrêtage par effet de sautoir 22 comprenant deux sautoirs 24 et 26 agit sur les dents 10 de l'anneau supérieur 4 et sur les dents 12 de l'anneau inférieur 6. Contrairement à l'art antérieur où, en raison du fait qu'un endroit de la denture de chacun des anneaux de quantième est dépourvu de dent, les sautoirs doivent coopérer avec trois dents successives de la denture de chacun des anneaux pour garantir le positionnement de ces anneaux même lors du passage de la dent manquante, la présente invention propose de remplacer la dent manquante par une dent amincie, c'est-à-dire moins haute que les autres dents disposées le long de la périphérie intérieure des anneaux de quantième supérieur 4 et inférieur 6. Comme on le verra en détail ci-dessous, la dent amincie selon l'invention joue le même rôle que la dent manquante selon l'art antérieur, à savoir définir une position de repos prolongé pour l'anneau de quantième concerné lorsque celui-ci présente sa position libre à l'endroit d'affichage 20 de la montre, mais permet de garantir, par sa présence, que le sautoir sera constamment logé entre deux dents immédiatement consécutives de la denture dudit anneau.A jumper device 22 comprising two jumpers 24 and 26 acts on the teeth 10 of the upper ring 4 and on the teeth 12 of the lower ring 6. Unlike the prior art where, because of the a place of the teeth of each of the calendar rings is toothless, the jumpers must cooperate with three successive teeth of the teeth of each of the rings to ensure the positioning of these rings even when passing the missing tooth, the present invention proposes to replace the missing tooth by a thinned tooth, that is to say, lower than the other teeth disposed along the inner periphery of the upper date ring 4 and lower 6. As will be seen in detail below, the thinned tooth according to the invention plays the same role as the missing tooth according to the prior art, namely to define an extended rest position for the date ring concerned when it present e its free position at the display location 20 of the watch, but ensures, by its presence, that the jumper will be constantly housed between two immediately consecutive teeth of the toothing of said ring.

A leur circonférence extérieure, les anneaux de quantième 4 et 6 présentent chacun une butée, respectivement 28 et 30. Les figures 2 et 3 montrent le détail de cet agencement. La butée 28 s'étend perpendiculairement au plan de l'anneau de quantième supérieur 4, tandis que la butée 30 s'étend radialement hors du périmètre extérieur de l'anneau de quantième inférieur 6.At their outer circumference, the date rings 4 and 6 each have an abutment 28 and 30, respectively. figures 2 and 3 show the detail of this arrangement. The stop 28 extends perpendicular to the plane of the upper date ring 4, while the stop 30 extends radially out of the outer perimeter of the lower date ring 6.

Dans la situation représentée à la figure 4, l'anneau de quantième supérieur 4 présente sa fenêtre 8 à l'endroit d'affichage 20, et simultanément sa dent amincie 14 vis-à-vis de la roue d'entraînement 18. On comprendra que la hauteur de la dent amincie 14 est telle que la roue d'entraînement 18 ne peut engrener avec cette dent et entraîne uniquement l'anneau de quantième inférieur 6 qui, pour parvenir à la position représentée, aura été mené successivement par la roue d'entraînement 18 dans les situations où il exposait les marquages "11", "12", ..., "15" et finalement "16". Au moment où apparaît le marquage "16", la butée 30 arrive en appui contre la butée 28. A ce moment-là, lors de l'avance qui sera impartie à l'anneau inférieur 6 par la roue d'entraînement 18, l'anneau supérieur 4 sera également entraîné, de sorte que la fenêtre 8 disparaîtra de l'endroit d'affichage 20, pour faire place au marquage "17" de l'anneau supérieur "4". A ce moment, ce sera l'anneau inférieur 6 qui présentera sa dent amincie 16 en face de la roue d'entraînement 18. De même que pour l'anneau supérieur 4, la hauteur de la dent amincie 16 est telle que la roue d'entraînement 18 ne peut engrèner avec cette dent 16 et entraîne uniquement l'anneau de quantième supérieur 4. Ainsi, à chaque tour de la roue d'entraînement 18, seul l'anneau supérieur 4 avancera d'un pas, faisant successivement apparaître les marquages "17", "18", ..., "30" et "31 ". Lors de l'affichage du marquage "31 ", la situation entre les deux butées 28 et 30 sera l'inverse de celle décrite ci-dessus, c'est-à-dire que la butée 28 de l'anneau de quantième supérieur 4, venant buter contre la butée 30 de l'anneau de quantième inférieur 6, provoquera simultanément, lors de l'avance de l'anneau supérieur 4, l'avance de l'anneau inférieur 6, ce qui provoquera l'apparition du marquage "1" sous la fenêtre 8, à l'endroit d'affichage 20. Pendant tout le temps où l'anneau supérieur 4 s'est mû alors que l'anneau inférieur 6 était en repos prolongé, c'est le secteur exempt de marquage de celui-ci qui se trouvait à l'endroit d'affichage 20, cela étant toutefois sans effet puisque, dans ce cas, la fenêtre 8 n'a jamais été à l'endroit d'affichage et n'a donc jamais laissé voir l'anneau inférieur 6. Ensuite, les seize marquages de l'anneau inférieur 6 défilent successivement jusqu'au retour à la situation représentée à la figure 4. Le cycle se répète alors.In the situation represented in figure 4 , the upper date ring 4 has its window 8 at the display location 20, and simultaneously its thinned tooth 14 vis-à-vis the drive wheel 18. It will be understood that the height of the thinned tooth 14 is such that the drive wheel 18 can not mesh with this tooth and drives only the lower date ring 6 which, to achieve the position shown, was successively conducted by the drive wheel 18 in the situations where it exposed the markings "11", "12", ..., "15" and finally "16". At the moment when the marking "16" appears, the stop 30 comes to bear against the stop 28. At that moment, during the advance which will be imparted to the lower ring 6 by the drive wheel 18, the upper ring 4 will also be driven, so that the window 8 will disappear from the display location 20, to make room for the marking "17" of the upper ring "4". At this time, it will be the lower ring 6 which will present its thinned tooth 16 in front of the drive wheel 18. As for the upper ring 4, the height of the thinned tooth 16 is such that the wheel of drive 18 can meshing with this tooth 16 and drives only the upper date ring 4. Thus, at each turn of the drive wheel 18, only the upper ring 4 will advance one step, successively showing the markings "17", "18", ..., "30" and "31". When displaying the marking "31", the situation between the two stops 28 and 30 will be the opposite of that described above, that is to say that the stop 28 of the upper date ring 4 , coming up against the abutment 30 of the lower date ring 6, will simultaneously cause, during the advance of the upper ring 4, the advance of the lower ring 6, which will cause the appearance of the marking " 1 "under the window 8, at the display location 20. During the entire time when the upper ring 4 moved while the lower ring 6 was in extended rest, it is the mark-free sector of the latter which was in the display location 20, however, this being without effect since, in this case, the window 8 has never been in the display location and therefore never let see the lower ring 6. Then, the sixteen markings of the lower ring 6 scroll successively until returning to the situation shown in FIG. figure 4 . The cycle is repeated then.

La figure 5 est une vue éclatée du mouvement 1 muni du mécanisme de quantième selon l'invention. Ce mouvement 1 comprend une platine 32 qui supporte et guide en rotation les deux anneaux de quantième inférieur 6 et supérieur 4. Au centre de la platine 32 se dresse classiquement l'axe de la roue des heures 34 sur lequel est engagée la roue des heures 36. Un pont 38 porte le dispositif d'arrêtage 22 muni de ses deux sautoirs 24 et 26 qui agissent respectivement sur l'anneau de quantième supérieur 4 et sur l'anneau de quantième inférieur 6. La roue d'entraînement 18 comprend une roue 40 entraînée, via un mobile démultiplicateur non représenté, par la roue des heures 34 de façon à effectuer un tour complet en vingt-quatre heures. Deux doigts 42 et 44 sont fixés, par exemple par soudage, sur la roue 40. Ces deux doigts 42 et 44 entraînent les anneaux de quantième, respectivement supérieur 4 et inférieur 6, par action sur les dents 10 ou 12 de ces anneaux. Si la dent amincie 14 de l'anneau de quantième supérieur 4 se trouve vis-à-vis de la roue d'entraînement 18, celle-ci sera sans effet sur ledit anneau supérieur 4 et entraînera uniquement par son doigt 44 l'anneau de quantième inférieur 6 d'un pas chaque jour. Inversement, si la dent amincie 16 de l'anneau de quantième inférieur 6 se trouve en regard de la roue d'entraînement 18, le doigt 44 ne pourra venir en prise avec cette dent 16 dudit anneau inférieur 6, et seul l'anneau supérieur 4 avancera d'un pas chaque jour.The figure 5 is an exploded view of the movement 1 provided with the date mechanism according to the invention. This movement 1 comprises a plate 32 which supports and guides in rotation the two lower and upper date rings 6 and 4. In the center of the plate 32 stands conventionally the axis of the hour wheel 34 on which is engaged the hour wheel. 36. A bridge 38 carries the stop device 22 provided with its two jumpers 24 and 26 which respectively act on the upper date ring 4 and on the lower date ring 6. The drive wheel 18 comprises a wheel 40 driven, via a gear reducer not shown, by the hour wheel 34 so as to perform a complete revolution in twenty-four hours. Two fingers 42 and 44 are fixed, for example by welding, on the wheel 40. These two fingers 42 and 44 drive the date rings, respectively upper 4 and lower 6, by action on the teeth 10 or 12 of these rings. If the thinned tooth 14 of the upper date ring 4 is opposite the driving wheel 18, it will have no effect on said upper ring 4 and will only cause by its finger 44 the ring of lower date 6 of a step every day. Conversely, if the thinned tooth 16 of the lower date ring 6 is opposite the driving wheel 18, the finger 44 can not come into engagement with this tooth 16 of said lower ring 6, and only the upper ring 4 will advance one step each day.

La roue d'entraînement 18 est montée libre sur un axe 46 du pont 38. Enfin, le mécanisme de quantième selon l'invention est maintenu axialement sur la platine 32 au moyen d'une plaque de maintien 48 fixée à l'aide de vis 50.The drive wheel 18 is freely mounted on an axis 46 of the bridge 38. Finally, the date mechanism according to the invention is held axially on the plate 32 by means of a holding plate 48 fixed with screws. 50.

La figure 6 est une représentation développée des dentures des anneaux de quantième supérieur 4 et inférieur 6. Comme on peut le constater à l'examen de cette figure, l'anneau de quantième supérieur 4 comporte seize dents repérées par les chiffres 1,2,...., 15 et 16, tandis que l'anneau de quantième inférieur 6 comprend dix-sept dents repérées par les chiffres 1, 2, ..., 16 et 17. L'anneau supérieur 4 comporte donc 16 divisions, tandis que l'anneau inférieur 6 comporte 17 divisions. Les dents 10 et 12 des anneaux respectivement supérieur 4 et inférieur 6 sont donc décalées les unes par rapport aux autre. Les positions des dents amincies 14 et 16 des anneaux supérieur 4 et inférieur 6 sont repérées par des cercles en traits pleins. La position de la roue d'entraînement 18 vis-à-vis des dentures des anneaux supérieur 4 et inférieur 6 est repérée par le segment de droite A-A. Enfin, les deux sautoirs 24 et 26 sont matérialisés par deux rectangles qui portent les mêmes références numériques. Comme on peut le constater à l'examen du dessin, la hauteur des deux sautoirs 24 et 26 est égale à l'épaisseur des dents 10 et 12.The figure 6 is a developed representation of the teeth of the upper date ring 4 and lower 6. As can be seen from the examination of this figure, the upper date ring 4 has sixteen teeth identified by the numerals 1,2, ... ., 15 and 16, while the lower date ring 6 comprises seventeen teeth identified by the numerals 1, 2, ..., 16 and 17. The upper ring 4 therefore has 16 divisions, while the lower ring 6 has 17 divisions. The teeth 10 and 12 respectively of the upper 4 and lower 6 rings are offset with respect to each other. The positions of the tapered teeth 14 and 16 of the upper 4 and lower 6 rings are marked by circles in solid lines. The position of the drive wheel 18 vis-à-vis the teeth of the upper 4 and lower 6 rings is marked by the line segment AA. Finally, the two jumpers 24 and 26 are represented by two rectangles which bear the same numerical references. As can be seen from the drawing, the height of the two jumpers 24 and 26 is equal to the thickness of the teeth 10 and 12.

Dans la situation représentée sur la figure 6, l'anneau de quantième supérieur 4 présente sa dent amincie 14 en regard de la roue d'entraînement 18. Cette position correspond à la situation dans laquelle l'anneau supérieur 4 présente sa fenêtre 8 à l'endroit d'affichage 20 du mouvement et révèle le chiffre "16" porté par l'anneau inférieur (voir également la figure 4). Au moment où apparaît le marquage "16", la butée 30 de l'anneau de quantième inférieur 6 arrive en butée contre la butée 28 de l'anneau supérieur 4. Ainsi, lors de l'avance qui sera impartie à l'anneau inférieur 6 par la roue d'entraînement 18, l'anneau supérieur 4 sera également entraîné. Ce sera alors l'anneau inférieur 6 qui présentera sa dent amincie 16 en regard de la roue d'entraînement 18, tandis que la dent amincie 14 de l'anneau supérieur 4 aura avancé d'un pas.In the situation represented on the figure 6 , the upper date ring 4 has its thinned tooth 14 facing the drive wheel 18. This position corresponds to the situation in which the upper ring 4 has its window 8 at the display location 20 of the movement and reveals the number "16" carried by the lower ring (see also figure 4 ). At the moment when the marking "16" appears, the stop 30 of the lower date ring 6 comes into abutment against the stop 28 of the upper ring 4. Thus, during the advance which will be imparted to the lower ring 6 by the drive wheel 18, the upper ring 4 will also be driven. It will then be the lower ring 6 which will present its thinned tooth 16 facing the drive wheel 18, while the thinned tooth 14 of the upper ring 4 will have advanced one step.

Comme déjà mentionné ci-dessus, la hauteur des deux sautoirs 24 et 26 est sensiblement égale à l'épaisseur des dents 10 et 12, de sorte que même lors du passage de la dent amincie, respectivement 14 ou 16, lesdits sautoirs restent toujours engagés entre deux dents immédiatement consécutives des dentures des disques supérieur et inférieur, garantissant un positionnement adéquat de ces disques.As already mentioned above, the height of the two jumpers 24 and 26 is substantially equal to the thickness of the teeth 10 and 12, so that even when passage of the thinned tooth, respectively 14 or 16, said jumpers are always engaged between two immediately consecutive teeth of the upper and lower disc teeth, ensuring proper positioning of these discs.

Il va de soi que la présente invention n'est pas limitée au mode de réalisation qui vient d'être décrit, et que diverses modifications et variantes simples peuvent être envisagées par l'homme du métier sans sortir du cadre de la présente invention comme définie par les revendications.It goes without saying that the present invention is not limited to the embodiment which has just been described, and that various modifications and simple variants can be envisaged by those skilled in the art without departing from the scope of the present invention as defined. by the claims.

Claims (3)

  1. Date mechanism for a timepiece such as a wristwatch including two superposed respectively lower (6) and upper (4) date rings, whose surface is divided into a plurality of sectors, the upper ring (4) including sixteen sectors, fifteen of which respectively bear fifteen successive markings of a cycle of 31 positions, and the sixteenth of which is an extra sector having an open or transparent aperture (8), whereas the lower ring (6) includes seventeen sectors, sixteen of which bear respectively the other sixteen markings of the cycle of 31 positions, and the seventeenth of which is an extra sector, each of said rings (4, 6) being provided respectively with a peripheral toothing made of a succession of regularly spaced teeth (10, 12) cooperating with drive means such that the markings of the lower ring (6) appear successively in a display zone (20) through the aperture (8), the upper ring (4) remaining immobile, and in that, the lower ring (6) being immobile, the markings of the upper ring (4) successively appear in the display zone (20), the upper ring (4) concealing the markings of the lower ring (6), the date mechanism further including a jumper-effect stopping device (22) able to stop each ring (4, 6) in any desired position, the stopping device being adapted to the pitch of the particular ring (4, 6) concerned, said date mechanism being characterised in that one location on the upper ring (4) and one location on the lower ring (6) are provided each with a thinned tooth (14, 16) less high than the other teeth (10, 12) located between two successive teeth (10, 12) of the toothing of the ring (4, 6) concerned, the position of the drive means with respect to the toothing of the rings (4, 6) being such that when one of said rings (4, 6) has its extra sector at the location of the display zone (20), the thinned tooth (14, 16) of said ring (4, 6) is located opposite the drive means such that said drive means only drive the other ring, the thinned teeth (14, 16) being arranged so that they do not disturb the movement of the drive means and allowing the stopping device (22) to be constantly housed between two successive teeth (10, 12) of each of the rings (4, 6).
  2. Date mechanism according to claim 1, characterised in that the stopping device (22) includes two jumpers (24, 26) whose height is substantially equal to the thickness of the teeth (10, 12).
  3. Date mechanism according to claims 1 or 2, characterised in the drive means include a wheel (18) arranged to make one revolution in 24 hours and which is fitted with two fingers (42, 44) which are respectively arranged to drive the date rings (4, 6) by acting on their teeth (10, 12).
EP03027147A 2003-11-26 2003-11-26 Calendar mechanism for a watch comprising two superposed date annuli Expired - Lifetime EP1536300B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP03027147A EP1536300B1 (en) 2003-11-26 2003-11-26 Calendar mechanism for a watch comprising two superposed date annuli
SG200407199A SG112095A1 (en) 2003-11-26 2004-11-12 Timepiece with a date mechanism comprising two superposed date rings
KR1020040093756A KR101093184B1 (en) 2003-11-26 2004-11-17 Timepiece with a date mechanism comprising two superposed date rings
TW093135280A TW200519554A (en) 2003-11-26 2004-11-17 Timepiece with a date mechanism comprising two superposed date rings
US10/991,489 US6934221B2 (en) 2003-11-26 2004-11-19 Timepiece with a date mechanism comprising two superposed date rings
CN2004100917318A CN1621974B (en) 2003-11-26 2004-11-25 Timepiece with a date mechanism comprising two superposed date rings
JP2004341920A JP4537183B2 (en) 2003-11-26 2004-11-26 Watch having a date mechanism with two date rings superimposed
HK05109891.6A HK1077884A1 (en) 2003-11-26 2005-11-07 Timepiece with a date mechanism comprising two superposed date rings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03027147A EP1536300B1 (en) 2003-11-26 2003-11-26 Calendar mechanism for a watch comprising two superposed date annuli

Publications (2)

Publication Number Publication Date
EP1536300A1 EP1536300A1 (en) 2005-06-01
EP1536300B1 true EP1536300B1 (en) 2011-06-08

Family

ID=34442881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03027147A Expired - Lifetime EP1536300B1 (en) 2003-11-26 2003-11-26 Calendar mechanism for a watch comprising two superposed date annuli

Country Status (8)

Country Link
US (1) US6934221B2 (en)
EP (1) EP1536300B1 (en)
JP (1) JP4537183B2 (en)
KR (1) KR101093184B1 (en)
CN (1) CN1621974B (en)
HK (1) HK1077884A1 (en)
SG (1) SG112095A1 (en)
TW (1) TW200519554A (en)

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Publication number Priority date Publication date Assignee Title
US7738324B2 (en) 2005-03-30 2010-06-15 Citizen Holdings Co., Ltd. Display device and timepiece calendar device
US7120091B1 (en) * 2005-08-25 2006-10-10 Timex Group B.V. Electronic device with calendar function
US7423936B2 (en) * 2005-09-07 2008-09-09 Timex Group B.V. Electronic device with scheduled occurrence indicators
DE602006007855D1 (en) * 2006-09-26 2009-08-27 Eta Sa Mft Horlogere Suisse Movement comprising a mounting plate for a display ring
EP2141556B1 (en) * 2008-07-03 2012-06-27 ETA SA Manufacture Horlogère Suisse Calendar mechanism for a timepiece
US7859950B2 (en) * 2008-08-11 2010-12-28 Blancpain S.A. Large date calendar day mechanism for a timepiece
EP2835697B1 (en) * 2013-08-05 2022-01-05 ETA SA Manufacture Horlogère Suisse Display system for showing the date
EP2985660B1 (en) * 2014-08-14 2019-05-22 Montres Tudor S.A. Timepiece device for displaying a time or time-derived indication
EP3040784B1 (en) * 2014-12-30 2018-08-15 ETA SA Manufacture Horlogère Suisse Date display device for timepiece
EP3040788B1 (en) * 2014-12-30 2017-08-09 ETA SA Manufacture Horlogère Suisse Clutch mechanism for date display mobiles
CN108227454B (en) * 2016-12-22 2023-05-26 天津海鸥表业集团有限公司 Double-layer calendar mechanism of clock
CN113093503B (en) * 2020-01-08 2024-01-05 精工爱普生株式会社 Movement and timepiece

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Publication number Priority date Publication date Assignee Title
DE1195236B (en) * 1962-01-13 1965-06-16 Diehl Fa Clock with date display
CH624534GA3 (en) * 1979-04-04 1981-08-14
CH660941GA3 (en) * 1985-06-11 1987-06-30 Fred Murten Bandi Counting and display device with window, especially for wrist watch or other timepiece calendar, with analogue display
DE19845539A1 (en) * 1998-10-02 2000-04-06 Fortis Ag Grenchen Wristwatch with large date display has indexing member which increments disc by two or more indexing teeth
TW493113B (en) * 2000-08-23 2002-07-01 Ebauchesfabrik Eta Ag Electronic watch with a large date aperture
SG102647A1 (en) * 2000-12-22 2004-03-26 Ebauchesfabrik Eta Ag Timepiece provided with a date having a large aperture
EP1316858B1 (en) * 2001-11-30 2008-01-23 Rolex Sa Date mechanism for timepiece
JP4451634B2 (en) * 2003-10-31 2010-04-14 シチズンホールディングス株式会社 Calendar mechanism

Also Published As

Publication number Publication date
SG112095A1 (en) 2005-06-29
JP2005156563A (en) 2005-06-16
HK1077884A1 (en) 2006-02-24
US6934221B2 (en) 2005-08-23
TW200519554A (en) 2005-06-16
CN1621974A (en) 2005-06-01
KR101093184B1 (en) 2011-12-13
KR20050050538A (en) 2005-05-31
CN1621974B (en) 2013-03-27
EP1536300A1 (en) 2005-06-01
JP4537183B2 (en) 2010-09-01
US20050111302A1 (en) 2005-05-26

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