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EP3696617B1 - Mechanism for displaying month and leap year for a timepiece - Google Patents

Mechanism for displaying month and leap year for a timepiece Download PDF

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Publication number
EP3696617B1
EP3696617B1 EP19157299.9A EP19157299A EP3696617B1 EP 3696617 B1 EP3696617 B1 EP 3696617B1 EP 19157299 A EP19157299 A EP 19157299A EP 3696617 B1 EP3696617 B1 EP 3696617B1
Authority
EP
European Patent Office
Prior art keywords
month
display
wheel
wheel set
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.)
Active
Application number
EP19157299.9A
Other languages
German (de)
French (fr)
Other versions
EP3696617A1 (en
Inventor
Tony Braun
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.)
Glashuetter Uhrenbetrieb GmbH
Original Assignee
Glashuetter Uhrenbetrieb GmbH
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 Glashuetter Uhrenbetrieb GmbH filed Critical Glashuetter Uhrenbetrieb GmbH
Priority to EP19157299.9A priority Critical patent/EP3696617B1/en
Priority to US16/783,960 priority patent/US11493885B2/en
Priority to US17/420,290 priority patent/US12001170B2/en
Priority to PCT/EP2020/053330 priority patent/WO2020165095A1/en
Priority to CN202080014615.3A priority patent/CN113424112B/en
Priority to EP20702857.2A priority patent/EP3924784B1/en
Priority to JP2021540536A priority patent/JP7174858B2/en
Priority to JP2020021348A priority patent/JP6837166B2/en
Priority to CN202010090486.8A priority patent/CN111562734B/en
Priority to RU2020106719A priority patent/RU2727026C1/en
Publication of EP3696617A1 publication Critical patent/EP3696617A1/en
Application granted granted Critical
Publication of EP3696617B1 publication Critical patent/EP3696617B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B47/00—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece
    • G04B47/06—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece with attached measuring instruments, e.g. pedometer, barometer, thermometer or compass
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
    • G04B19/25366—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement manually corrected at the end of months having less than 31 days

Definitions

  • the invention relates to a month and leap year display mechanism for a timepiece.
  • the invention relates to the field of horological complications comprising a calendar.
  • Calendar mechanisms are among the classic horological complications. Some complex mechanisms are able to manage the duration of months or years. Leap year displays or indicators allow the user to determine whether the current year is a leap year or not, and, depending on the complexity level of the watch, can manage the display of the last day of the month of February, and the correct transition to the first of March.
  • the mere knowledge of whether the current year is a leap year or not allows the user to correctly perform the display correction of the last days of the current month, generally by through the control rod.
  • the mechanisms differ depending on whether it is a simple calendar, an annual calendar, or a perpetual calendar.
  • the leap year management mechanism requires expensive components, for example a Maltese cross cam, and consumes a certain volume inside the watch case, or the coin case. clockwork if it is static like a clock.
  • Leap year display is often performed by displaying a sector of a four-quadrant disc in a small window, or by the cooperation of an index with part of such a disc.
  • the document WO01/48568A1 describes a timepiece comprising a perpetual calendar.
  • the drive mechanism of this perpetual calendar comprises a toothed crown taking the form of a disc having an external toothing and an internal toothing and being divided into forty-eight sectors.
  • This disc fulfills a programming function, in the sense that it is used to establish the duration of each month, in a four-year cycle, this duration being subsequently used to drive the date display.
  • the disc also performs a month display function. Indeed, it has, on its upper surface, forty-eight indications, each indicating a corresponding month, in the four-year cycle.
  • the text of the document specifies that this month indication could appear in an aperture of the dial,
  • the document CH662696G describes a timepiece which displays the date in a sub-dial placed at 12 o'clock as well as the signs of the Zodiac and the months using a disc appearing in an aperture in the shape of an arc of circle having an extension substantially equal to 90 degrees . This disc is used to display the month in a cycle of twelve months and it is also used to take part in the realization of a perpetual calendar.
  • the present invention proposes to combine a display of the current month with a display of the type of current year, leap year or not, with a very simple, inexpensive, very reliable, easy to correct mechanism, and limited to a reasonable volume. in the timepiece concerned.
  • the invention relates to month and leap year display mechanisms for a timepiece, as defined in independent claims 1, 5 and 6. Preferred embodiments are defined in claims dependent.
  • the invention relates to a month and leap year display mechanism 10 for a timepiece 1000.
  • the figure 1 illustrates such a timepiece 1000, here a watch, which comprises a traditional time display 1A by hour and minute hands, a date mechanism 200 with a date display 1B, a control rod 221 which notably controls a date corrector 220, and a month and leap year display mechanism 10 according to the invention.
  • this mechanism 10 includes a leap year display integrated into a month display.
  • the invention is described in the specific, non-limiting case of a display according to a Gregorian calendar, but it lends itself perfectly to other types of calendar, in particular of the lunar or zodiac type, which the person skilled in the art will be able to achieve easily by substituting, for the display change command at the end of the month which will be described later, a display change command at the end of the lunar month, or at the end of any ad hoc period.
  • either the mechanism 10 comprises a movement 100, or the mechanism 10 is arranged to cooperate with a movement 100.
  • this movement 100 is arranged to drive a month display mobile 2, consisting in particular but not limited to a display ring or a display disk, through a control mechanism 3, which the mechanism 10 comprises.
  • month 2 is arranged to rotate around an axis of rotation D, and is arranged under a cover plate or under a dial 1.
  • This dial 1, or this cover plate, for example a bridge, or the like comprises an aperture of the months 1C, which is limited in an angular sector of 90° around the axis of rotation D.
  • This window of the months 1C is arranged to allow a user to see a quarter of the mobile display of the months 2, whereas the other three-quarters of the month display mobile 2 are hidden from it, by the dial 1 and/or at least one fixed part of the timepiece 100.
  • control mechanism 3 is arranged to cause the month display mobile 2 to complete a complete revolution in four years.
  • the month display mobile 2 rotates one forty-eighth of a turn at the end of each month.
  • this month display mobile 2 bears, over an angular sector of 90°, at least one leap year characteristic marking.
  • month display mobile 2 bears either indexes, each of which is arranged to designate a month on a static month scale of the dial 1, or else equidistant month markings and one of the month markings is pointed by a fixed mark on dial 1.
  • the figures illustrate the construction of such a leap year display, which comprises, in this particular and non-limiting version, a cover plate, in particular in the form of a dial 1, a mobile display of month 2 which is a ring, or a disc bearing an annular display track, and a control and distribution mechanism 3.
  • the month display mobile 2 is pivotally mounted around the axis of rotation D.
  • the mechanism control 3, driven by the movement 100 or by a date mechanism 200, has the function of driving the month display mobile 2 by an angular step, at each change of month, and of bringing this mobile back to display of 2 months in a new idle position until activated at the end of the new month.
  • the month and leap year display mechanism 10 comprises a month window 1C opposite a static 1D month scale 1D of the dial 1, which 1D month scale comprises the succession of the names of the different months. More particularly, the month scale 1D extends at a central angle of 90° with respect to the axis of rotation D.
  • the month display mobile 2 comprises a display track, visible through the window months 1C, and which comprises four equidistant indexes 2A or 2B, only one of which is visible both through the month window 1C and permanently points to a marker corresponding to the current month on the month scale 1D.
  • This leap year index 2A different from the other ordinary year indexes 2B, can thus be integrated into the display of the month.
  • these indexes are triangular, and the leap year index 2A bears the letter S as Weg disrupt (leap year).
  • the indexes of ordinary years 2B are different from each other, each comprising a numerical indication, visible to the user, of the number of years remaining to run until the next leap year.
  • the indexes of ordinary years 2B are different from each other, each comprising a numerical indication, visible to the user, of the number of years elapsed since the last leap year.
  • the window of the months 1C comprises a crystal 70, fixed, at least partially translucent and carrying twelve upper markings 71 translucent, static, each corresponding to a month of a year.
  • the 2 month display mobile rotates under this glass 70.
  • This month display mobile 2 carries four lower markings 72A and 72B, which are equidistant, and which are revealing markings, in particular colored and/or reflective, each of the angular amplitude of a month marking 71.
  • Each of the lower markings 72A or 72B is arranged to reveal the name of the current month by visual contrast with the upper markings 71 of the other months, by the effect of the local superposition of the lower marking 72A or 72B considered , and the upper marking 71 of the current month.
  • One of the lower markings 72 is a leap year lower marking 72A, and is different from the other lower markings 72 which are ordinary year lower markings 72B, and is arranged to produce, for the current month, an effect visual for the user which is different from the visual effects of other months of the year.
  • the four lower markings 72A and 72B may consist of colored surfaces, differentiated between the lower leap year marking 72A, and the lower markings of ordinary years 72B, and visible through a trimming of the upper markings 71, or again by reflective surfaces of different colors, or others.
  • the outline of the upper marking 71 notably leaves the view on the surface of the mobile display 2, and only the name (or the symbol) of the current month is thus revealed.
  • THE figures 7 to 9 illustrate a non-limiting example where the lower leap year marking 72A is checkered, and the lower regular year markings 72B are single hatched; there figure 8 illustrates the visualization of a month of March in an ordinary year, while the figure 9 illustrates an October of a leap year.
  • the crystal 70 may, in a particular embodiment, be transparent only at the level of the upper markings 71, for example inside the letters of the names of the months, as illustrated by the figures 8 and 9 .
  • the month display mobile 2 bears equidistant month markings 80 corresponding to the succession of months over four years and of which one of the month markings 80 is pointed by a fixed marker 83 of the dial 1 which is an index 84 or/and a colored translucent crystal 85.
  • These month markings 80 consist of forty-eight month markings 81 and 82, among which twelve successive markings are leap year month markings 81, and are different from the thirty-six other 80 markings which are ordinary year month markings 82.
  • the figure 10 illustrates a non-limiting example where the ordinary year month markings 82 have month names with a thin character, while the leap year month markings 81 have a thicker character, and where the current month is visible under a colored translucent glass 85 which itself faces a index 84. It is understood that the month display mobile 2 rotates by one forty-eighth of a turn at the end of each month.
  • this control mechanism 3 includes an input wheel set 31, which is arranged to be driven by the hour wheel of the movement 100 or by a gear train meshing with the hour wheel or by a date mechanism 200.
  • This wheel set input 31 includes a finger 311, which is arranged to cause a first star wheel 321 integral with an intermediate wheel 32 to pivot.
  • This intermediate wheel 32 meshes with a transformation gear train 33, to drive a stop wheel 34.
  • the stopper 34 has recesses 34A, which are arranged to cooperate with a pawl 35 returned by a spring 352 to a rest position.
  • This stop wheel 34 is integral with a second star 341, the teeth 342 of which are arranged to drive pins 22, which the month display wheel set 2 comprises, when the stop wheel 34 pivots, and to maintain in position these pins 22 when the stop wheel 34 is held stationary by the pawl 35 in the absence of pivoting of the first star 321.
  • the entry mobile 31 pivots by 1/31 of a turn at the end of each day; preferably it is driven by a date mechanism 200, and, depending on the type of date mechanism (perpetual calendar or annular calendar in particular), this rotation can conventionally require 2 to 3 hours at the end of the day.
  • the date mechanism carries out the end-of-month catch-up.
  • the entry mobile 31 is integral with a wheel of such a date mechanism 200.
  • the input mobile 31 is arranged to rotate once a month, on the last day of the month, the first star 321.
  • the conventional drive of a 59-tooth wheel makes it possible to trigger the pivoting of the first star 321 on the last day of a lunar month, for a Zodiac or Muslim or Israelite or similar calendar display.
  • the stopper wheel 34 comprises alternating recesses 34A and spikes 34B, and the intermediate wheel 32 and the transformation cog 33 are arranged to drive the stopper wheel 34 of the angular pitch between two successive recesses 34A during of each elementary rotation of the first star 321.
  • each elementary rotation of the first star 321 raises a roller 351, which the pawl 35 comprises, on a cam ramp between a hollow 34A and a point 34B on a first part of the angular pitch, against the spring 352 to arm this one.
  • this spring 352 is arranged to, when it is disarmed after the tip 34B has passed through the roller 351, cause the stop wheel 34 to pivot over a second part of the angular pitch to a new rest position in which the roller 351 is wedged in a hollow 34A until the end of the following month.
  • each rotation of the stop wheel 34 commands a rotation of 1/ 48th of a turn of the month display mobile 2.
  • each elementary rotation of the first star 321 causes a rotation of a quarter turn of the stop wheel 34.
  • the input mobile 31 drives the intermediate wheel 32 and causes it to go through an eighth of a turn.
  • the transformation train 33 is then arranged to pivot the stop wheel 34 by a quarter turn.
  • the stop wheel 34 is thus driven by the input mobile 31 and the transformation by the intermediate wheel and the transformation gear train 33, by approximately a quarter turn. From this 90° rotation, approximately 45° are used to disengage the pawl 35 and to arm its spring 352, up to the position of the figure 6 . After the passage of the point 34B by the roller 351, the spring 352 pushes the roller 351 with a brief blow which falls into the next hollow 34A of the stop wheel 34, and this impulse controls the pivoting of the mobile of display of months 2 of a forty-eighth turn, to display the new month in window 1C. Thus the stopper wheel 34 is constantly in contact with the pins 22 of the month display mobile 2.
  • This stopper wheel 34 rests all month on the pawl 35, and it is only during the mobile monthly movement input 31 that the stop wheel 34 performs a total rotation of a quarter turn, between the last day of the month previous and the first day of the new month.
  • the pawl 35 also rests throughout the month on a hollow 34A of the stop wheel 34, and is moved along the latter only during the monthly maneuver given by the entry mobile 31.
  • the display mechanism 10 also comprises a month correction mechanism 20, which is arranged to modify the angular position of the month display mobile 2 on command from the user.
  • this correction mechanism 20 includes a drive element 222 that can be operated directly by the user and arranged to drive the month display mobile 2 directly, by meshing, friction, or magnetic cooperation.
  • the correction mechanism 20 comprises an actuator that can be operated directly by the user and arranged to drive the stop wheel 34 in rotation.
  • THE figures 11 to 13 illustrate a non-limiting example of such a month correction mechanism 20, which comprises a user-operated mechanism, not shown, driving a correction wheel 21 which is arranged to move a correction pinion 24 integral with a correction star 23, which is arranged to drive the pins 22 of the month display mobile 2, in the same way as the second star 341 does at the end of the month; naturally this month correction mechanism 20 is sized to be able to overcome, without deformation, the resistant force which is permanently applied by the spring 352 on this same second star 341.
  • the correction can be carried out in a manner analogous to that of the day of the week for calendar watches displaying day and date: in one of the positions of the stem 221 and in particular in position T2 of the stem, correction of the date in a first direction of rotation, and correction of the day of the week in a second direction of rotation opposite to the first.
  • the correction would then be as follows: in position T2 of the stem, correction of the date in a first direction of rotation, and correction of the position of the month display mobile 2 in a second direction of rotation opposite to the first.
  • the invention also relates to a calendar mechanism 300, which comprises a date mechanism 200 arranged to cooperate with a movement 100 of a timepiece 1000, this calendar mechanism 300 comprising at least one display mechanism 10 according to the 'invention. More specifically, this date mechanism 200 comprises a gear train, which is arranged to count down the number of days of the current month, and to control the rotation of the input mobile 31 by 1/31 th of a turn from the first to the 27th of the month.
  • the date mechanism 200 comprises a date display 1B, and the input mobile 31 is arranged to control the position of the date display 1B.
  • the date mechanism 200 comprises a date corrector 220 arranged to modify the position of the date display 1B.
  • the date corrector 220 is further arranged to modify the angular position of the month display mobile 2.
  • the invention also relates to a timepiece 1000 comprising at least one timepiece movement 100 arranged to drive at least such a display mechanism 10, and/or to drive at least such a calendar mechanism 300.
  • this timepiece 1000 is a watch.
  • the principle of the invention can be extended to other types of calendar timepieces, in particular astronomical watches or astronomical clocks, for which it is in particular possible to manage, according to the principle of the invention , the display of the years in addition to the display of the months, distinguishing, on a year display mobile, the ordinary years, the years leap years, secular years not divisible by 400 and not leap years which have a 28-day month of February, and secular years divisible by 400 and leap years called quadrisecular years, which have February months of 29 days, or quadrimillenary years , which, although theoretically leap, have a 28-day month of February.
  • the present invention it is possible to easily integrate into any timepiece a display which gives the user information on whether he is in a leap year, and/or , depending on the organization of the display indexes, how many years are to count down to the next leap year, or since the last. We thus know the theoretical duration of the month of February, and the number of days in the current year.
  • the invention allows correct adjustment of mechanisms of the perpetual calendar type.
  • the invention allows a great saving in volume in the case of the timepiece concerned. Furthermore, no additional indicator zone is necessary on the dial of the timepiece.
  • the classic and essential displays for a wristwatch, such as the time and the date, remain perfectly clear and legible, and in the foreground.
  • the display is designed according to the principle of the Gregorian calendar or the Julian calendar, is adaptable to any other type of calendar, in particular lunar. Moreover, this display is not temporally limited, and does not lose its function on expiry.
  • the display mechanism according to the invention is economical, as is its correction mechanism.

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

Description

Domaine de l'inventionField of the invention

L'invention concerne un mécanisme d'affichage de mois et d'année bissextile pour une pièce d'horlogerie.The invention relates to a month and leap year display mechanism for a timepiece.

L'invention concerne le domaine des complications horlogères comportant un calendrier.The invention relates to the field of horological complications comprising a calendar.

Arrière-plan de l'inventionBackground of the invention

Les mécanismes de calendriers font partie des complications horlogères classiques. Certains mécanismes complexes sont à même de gérer la durée des mois ou des années. Des afficheurs ou indicateurs d'année bissextile permettent à l'utilisateur de déterminer si l'année en cours est une année bissextile ou non, et, selon le niveau de complexité de la montre, peuvent gérer l'affichage du dernier jour du mois de février, et le passage correct au premier mars.Calendar mechanisms are among the classic horological complications. Some complex mechanisms are able to manage the duration of months or years. Leap year displays or indicators allow the user to determine whether the current year is a leap year or not, and, depending on the complexity level of the watch, can manage the display of the last day of the month of February, and the correct transition to the first of March.

Dans le cas des mécanismes de calendrier les plus simples, la simple connaissance du caractère bissextile ou non de l'année en cours permet à l'utilisateur d'effectuer correctement la correction d'affichage des derniers jours du mois en cours, en général par l'intermédiaire de la tige de commande. Les mécanismes diffèrent selon qu'il s'agit d'un quantième simple, d'un quantième annuel, ou d'un quantième perpétuel. Dans ces derniers cas, le mécanisme de gestion d'année bissextile nécessite des composants coûteux, par exemple une came en croix de Malte, et consomment un certain volume à l'intérieur de la boîte de montre, ou de la boîte de la pièce d'horlogerie si elle est statique comme une horloge.In the case of the simplest calendar mechanisms, the mere knowledge of whether the current year is a leap year or not allows the user to correctly perform the display correction of the last days of the current month, generally by through the control rod. The mechanisms differ depending on whether it is a simple calendar, an annual calendar, or a perpetual calendar. In the latter cases, the leap year management mechanism requires expensive components, for example a Maltese cross cam, and consumes a certain volume inside the watch case, or the coin case. clockwork if it is static like a clock.

L'affichage d'année bissextile est souvent effectué par l'affichage d'un secteur d'un disque à quatre quadrants dans un petit guichet, ou par la coopération d'un index avec une partie d'un tel disque.Leap year display is often performed by displaying a sector of a four-quadrant disc in a small window, or by the cooperation of an index with part of such a disc.

Le document WO01/48568A1 décrit une pièce d'horlogerie comportant un calendrier perpétuel. Le mécanisme d'entraînement de ce calendrier perpétuel comporte une couronne dentée prenant la forme d'un disque ayant une denture extérieure et une denture intérieure et étant divisé en quarante-huit secteurs. Ce disque remplit une fonction de programmation, dans le sens qu'il est utilisé pour établir la durée de chaque mois, dans un cycle à quatre ans, cette durée étant par la suite utilisée pour entraîner l'affichage de quantième. Le disque remplit également une fonction d'affichage du mois. En effet, il comporte, sur sa surface supérieur, quarante-huit indications, chacune indiquant un mois correspondant, dans le cycle à quatre ans. Le texte du document spécifie que cette indication de mois pourrait apparaître dans un guichet du cadran,The document WO01/48568A1 describes a timepiece comprising a perpetual calendar. The drive mechanism of this perpetual calendar comprises a toothed crown taking the form of a disc having an external toothing and an internal toothing and being divided into forty-eight sectors. This disc fulfills a programming function, in the sense that it is used to establish the duration of each month, in a four-year cycle, this duration being subsequently used to drive the date display. The disc also performs a month display function. Indeed, it has, on its upper surface, forty-eight indications, each indicating a corresponding month, in the four-year cycle. The text of the document specifies that this month indication could appear in an aperture of the dial,

Le document CH662696G décrit une pièce d'horlogerie laquelle affiche le quantième dans un sous-cadran placé à 12h ainsi que les signes du Zodiac et les mois en utilisant un disque apparaissant dans un guichet en forme d'arc de cercle ayant une extension sensiblement égale à 90 degrés . Ce disque est utilisé pour afficher le mois dans un cycle de douze mois et il est également utilisé pour participer à la réalisation d'un calendrier perpétuel.The document CH662696G describes a timepiece which displays the date in a sub-dial placed at 12 o'clock as well as the signs of the Zodiac and the months using a disc appearing in an aperture in the shape of an arc of circle having an extension substantially equal to 90 degrees . This disc is used to display the month in a cycle of twelve months and it is also used to take part in the realization of a perpetual calendar.

Résumé de l'inventionSummary of the invention

La présente invention se propose de combiner un affichage du mois en cours avec un affichage du type d'année en cours, bissextile ou non, avec un mécanisme très simple, peu coûteux, très fiable, facile à corriger, et limité à un volume raisonnable dans la pièce d'horlogerie concernée.The present invention proposes to combine a display of the current month with a display of the type of current year, leap year or not, with a very simple, inexpensive, very reliable, easy to correct mechanism, and limited to a reasonable volume. in the timepiece concerned.

A cet effet, l'invention concerne des mécanismes d'affichage de mois et d'année bissextile pour une pièce d'horlogerie, tels que définis dans les revendications indépendantes 1, 5 et 6. Des formes de réalisation préférées sont définies dans les revendications dépendantes.To this end, the invention relates to month and leap year display mechanisms for a timepiece, as defined in independent claims 1, 5 and 6. Preferred embodiments are defined in claims dependent.

Description sommaire des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, en référence aux dessins annexés, où :

  • la figure 1 représente, de façon schématisée, et en vue en plan, une montre qui comporte un mécanisme de calendrier, avec un mécanisme de quantième avec affichage du quantième dans un guichet de quantième à environ trois heures, à proximité de la tige de réglage de la montre, et avec un mécanisme d'affichage de mois et d'année bissextile selon l'invention, qui comporte un guichet d'affichage de mois se développant sur un quadrant entre trois heures et six heures, dans une première variante où une échelle des mois statique s'étend sur le cadran de la montre le long de ce guichet des mois, et où un mobile d'affichage des mois comporte une piste annulaire qui porte quatre index différents, apparaissant chacun dans le guichet pendant une seule année et pointant le nom du mois en cours ; la figure montre un index spécifique à l'année bissextile qui pointe le mois de février en cours;
  • la figure 2 représente, de façon similaire à la figure 1, un détail de la même montre quand il s'agit d'une année ordinaire : un index d'année ordinaire remplace l'index spécial d'année bissextile de la figure 1, et pointe le mois de février de l'année courante ;
  • les figures 3 à 6 illustrent le mécanisme de commande du mobile d'affichage de mois :
  • la figure 3 représente, de façon similaire à la figure 1, la totalité du mobile d'affichage des mois, qui porte quatre index triangulaires dont l'un, au voisinage de six heures, est différent des trois autres et est l'indicateur d'année bissextile, et la coopération de ce mobile d'affichage des mois avec le mécanisme de commande ;
  • la figure 4 est une vue de détail de ce mécanisme de commande, à l'approche d'une fin de mois, depuis son entrée au niveau d'un mobile d'entrée 31, agencé pour être entraîné le mouvement ou par un mécanisme de quantième, et dont un doigt est agencé pour faire pivoter une première étoile, laquelle entraine une roue d'arrêt au travers d'un rouage ; cette roue d'arrêt comporte des creux agencés pour coopérer avec un cliquet rappelé par un ressort vers une position de repos, et elle est solidaire d'une deuxième étoile agencée pour entraîner des picots du mobile d'affichage des mois, quand la roue d'arrêt pivote, et pour maintenir en position ces picots quand la roue d'arrêt est maintenue à l'arrêt par le cliquet en l'absence de pivotement de la première étoile ;
  • la figure 5, similaire à la figure 4, est la représentation de l'état du mécanisme de commande au huitième jour d'un mois ;
  • la figure 6, similaire à la figure 4, est la représentation de l'état du mécanisme de commande au dernier jour d'un mois, peu avant minuit et le saut en rotation de la deuxième étoile pour entraîner le mobile d'affichage des mois ;
  • les figures 7 à 9 illustrent une deuxième variante, où le mobile d'affichage des mois porte des marquages inférieurs, et le guichet des mois comporte une glace au moins partiellement translucide porteuse de douze marquages supérieurs translucides, chacun correspondant à un mois d'une année ; le mobile d'affichage des mois tourne sous cette glace, et les quatre marquages inférieurs sont équidistants, et sont des marquages révélateurs, colorés ou/et réfléchissants, chacun de l'amplitude angulaire d'un marquage de mois :
  • la figure 7 illustre séparément cette glace et ce mobile d'affichage des mois ;
  • la figure 8 illustre leur superposition lors d'un mois de mars d'une année ordinaire non bissextile, au cours duquel un marquage inférieur hachuré propre à une année ordinaire est visible au travers du jour des caractères de mois de mars ;
  • la figure 8 illustre leur superposition lors d'un mois d'octobre d'une année bissextile, au cours duquel un marquage inférieur quadrillé propre à une année bissextile est visible au travers du jour des caractères de mois d'octobre ;
  • la figure 10 illustre une troisième variante, dans laquelle le mobile d'affichage des mois porte quarante-huit marquages de mois équidistants correspondant à la succession des mois sur quatre années et dont l'un des marquages de mois, correspondant au mois en cours, est pointé par un repère fixe du cadran, qui est un index ou/et une glace translucide colorée ; parmi ces quarante-huit marquages de mois, douze marquages successifs sont des marquages de mois d'année bissextile, et sont différents des trente-six autres marquages qui sont des marquages de mois d'années ordinaires ; cette figure illustre un exemple non limitatif où les marquages de mois d'années ordinaires comportent des noms des mois avec un caractère mince, tandis que les marquages de mois d'année bissextile comportent un caractère plus épais, et où le mois en cours de février d'une année ordinaire est visible sous une glace translucide colorée qui fait elle-même face à un index fixe sur le cadran ;
  • les figures 11 à 13 illustrent un exemple de mécanisme de correction utilisable avec chacune de ces trois variantes :
  • la figure 11 représente, de façon similaire à la figure 3, la totalité du mobile d'affichage des mois de la première variante, et coopération de ce mobile d'affichage des mois avec le mécanisme de commande, et, au voisinage de la tige à trois heures, un mécanisme de correction des mois ;
  • les figures 12 et 13, respectivement en plan et en perspective, illustrent le détail d'une roue de correction, agencée pour mouvoir un pignon de correction solidaire d'une étoile de correction, laquelle est agencée pour entraîner les picots du mobile d'affichage des mois, de la même façon que le fait la deuxième étoile en fin de mois ;
  • la figure 14 est un schéma-blocs représentant une pièce d'horlogerie, notamment une montre, comportant un mouvement, un mécanisme de calendrier avec un mécanisme de quantième et son mécanisme correcteur de quantième, et un mécanisme d'affichage de mois et d'année bissextile selon l'invention, avec son correcteur des mois.
Other characteristics and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, where:
  • there figure 1 represents, schematically, and in plan view, a watch which comprises a calendar mechanism, with a date mechanism with display of the date in a date window at approximately three o'clock, close to the adjustment stem of the watch , and with a month and leap year display mechanism according to the invention, which comprises a month display window developing on a quadrant between three o'clock and six o'clock, in a first variant where a month scale static extends over the dial of the watch along this month window, and where a month display mobile has an annular track which bears four different indexes, each appearing in the window for a single year and pointing to the name of the current month; the figure shows a leap year-specific index that points to the current month of February;
  • there figure 2 represents, similarly to the figure 1 , a detail of the same watch when it comes to an ordinary year: an ordinary year index replaces the special leap year index of the figure 1 , and points to the month of February of the current year;
  • THE figures 3 to 6 illustrate the control mechanism of the month display mobile:
  • there picture 3 represents, similarly to the figure 1 , the whole of the month display mobile, which bears four triangular indexes, one of which, at around six o'clock, is different from the other three and is the leap year indicator, and the cooperation of this mobile with month display with operating mechanism;
  • there figure 4 is a detailed view of this control mechanism, as the end of the month approaches, from its entry at the level of an entry wheel set 31, arranged to be driven by the movement or by a date mechanism, and one finger of which is arranged to rotate a first star, which drives a stop wheel through a cog; this stop wheel comprises recesses arranged to cooperate with a pawl returned by a spring to a rest position, and it is integral with a second star arranged to drive pins of the month display mobile, when the wheel d stop pivots, and to hold these pins in position when the stop wheel is held stationary by the pawl in the absence of pivoting of the first star;
  • there figure 5 , similar to the figure 4 , is the representation of the state of the control mechanism on the eighth day of a month;
  • there figure 6 , similar to the figure 4 , is the representation of the state of the control mechanism on the last day of a month, shortly before midnight and the rotational jump of the second star to drive the month display mobile;
  • THE figures 7 to 9 illustrate a second variant, where the month display mobile bears lower markings, and the month window comprises an at least partially translucent crystal carrying twelve upper translucent markings, each corresponding to a month of a year; the month display mobile rotates under this crystal, and the four lower markings are equidistant, and are revealing, colored or/and reflective markings, each of the angular amplitude of a month marking:
  • there figure 7 separately illustrates this crystal and this month display mobile;
  • there figure 8 illustrates their superposition during a month of March of an ordinary non-leap year, during which a hatched lower marking specific to an ordinary year is visible through the day of the characters of the month of March;
  • there figure 8 illustrates their superposition during an October of a leap year, during which a lower grid marking specific to a leap year is visible through the day of the October month characters;
  • there figure 10 illustrates a third variant, in which the month display mobile bears forty-eight equidistant month markings corresponding to the succession of months over four years and in which one of the month markings, corresponding to the current month, is pointed by a fixed mark the dial, which is an index or/and a colored translucent glass; among these forty-eight month markings, twelve successive markings are leap year month markings, and are different from the other thirty-six markings which are ordinary year month markings; this figure illustrates a non-limiting example where the month markings of ordinary years have month names with a thin character, while the month markings of a leap year have a thicker character, and where the current month of February of an ordinary year is visible under a colored translucent glass which itself faces a fixed index on the dial;
  • THE figures 11 to 13 illustrate an example of a correction mechanism that can be used with each of these three variants:
  • there figure 11 represents, similarly to the picture 3 , the entire month display mobile of the first variant, and cooperation of this month display mobile with the control mechanism, and, in the vicinity of the stem at three o'clock, a month correction mechanism;
  • THE figures 12 and 13 , respectively in plan and in perspective, illustrate the detail of a correction wheel, arranged to move a correction pinion secured to a correction star wheel, which is arranged to drive the pins of the month display mobile, of the same way as the second star does at the end of the month;
  • there figure 14 is a block diagram representing a timepiece, in particular a watch, comprising a movement, a calendar mechanism with a date mechanism and its date corrector mechanism, and a month and leap year display mechanism according to invention, with its month corrector.

Description détaillée des modes de réalisation préférésDetailed Description of Preferred Embodiments

L'invention concerne un mécanisme d'affichage de mois et d'année bissextile 10 pour une pièce d'horlogerie 1000. La figure 1 illustre une telle pièce d'horlogerie 1000, ici une montre, qui comporte un affichage du temps traditionnel 1A par aiguilles d'heures et minutes, un mécanisme de quantième 200 avec un afficheur de date 1B, une tige de commande 221 qui pilote notamment un correcteur de quantième 220, et un mécanisme d'affichage de mois et d'année bissextile 10 selon l'invention.The invention relates to a month and leap year display mechanism 10 for a timepiece 1000. The figure 1 illustrates such a timepiece 1000, here a watch, which comprises a traditional time display 1A by hour and minute hands, a date mechanism 200 with a date display 1B, a control rod 221 which notably controls a date corrector 220, and a month and leap year display mechanism 10 according to the invention.

Selon l'invention, ce mécanisme 10 comporte un affichage d'année bissextile intégré dans un affichage des mois. L'invention est décrite dans le cas particulier non limitatif d'un affichage selon un calendrier grégorien, mais elle se prête parfaitement à d'autres types de calendrier, notamment de type lunaire ou zodiacal, que l'homme du métier saura réaliser facilement en substituant, à la commande de changement d'affichage en fin de mois qui sera décrite plus loin, une commande de changement d'affichage en fin de mois lunaire, ou en fin de toute période ad hoc.According to the invention, this mechanism 10 includes a leap year display integrated into a month display. The invention is described in the specific, non-limiting case of a display according to a Gregorian calendar, but it lends itself perfectly to other types of calendar, in particular of the lunar or zodiac type, which the person skilled in the art will be able to achieve easily by substituting, for the display change command at the end of the month which will be described later, a display change command at the end of the lunar month, or at the end of any ad hoc period.

Selon la configuration de la pièce d'horlogerie, ou bien le mécanisme 10 comporte un mouvement 100, ou bien le mécanisme 10 est agencé pour coopérer avec un mouvement 100. Dans l'un ou l'autre cas, ce mouvement 100 est agencé pour entraîner un mobile d'affichage des mois 2, constitué notamment mais non limitativement par un anneau d'affichage ou un disque d'affichage, au travers d'un mécanisme de commande 3, que comporte le mécanisme 10. Ce mobile d'affichage des mois 2 est agencé pour tourner autour d'un axe de rotation D, et est disposé sous une plaque de couverture ou sous un cadran 1. Ce cadran 1, ou cette plaque de couverture, par exemple un pont, ou similaire, comporte un guichet des mois 1C, qui est limité dans un secteur angulaire de 90° autour de l'axe de rotation D. Ce guichet des mois 1C est agencé pour permettre à un utilisateur de voir un quart du mobile d'affichage des mois 2, alors que les autres trois quarts du mobile d'affichage des mois 2 lui sont cachés, par le cadran 1 ou/et au moins une partie fixe de la pièce d'horlogerie 100.Depending on the configuration of the timepiece, either the mechanism 10 comprises a movement 100, or the mechanism 10 is arranged to cooperate with a movement 100. In either case, this movement 100 is arranged to drive a month display mobile 2, consisting in particular but not limited to a display ring or a display disk, through a control mechanism 3, which the mechanism 10 comprises. month 2 is arranged to rotate around an axis of rotation D, and is arranged under a cover plate or under a dial 1. This dial 1, or this cover plate, for example a bridge, or the like, comprises an aperture of the months 1C, which is limited in an angular sector of 90° around the axis of rotation D. This window of the months 1C is arranged to allow a user to see a quarter of the mobile display of the months 2, whereas the other three-quarters of the month display mobile 2 are hidden from it, by the dial 1 and/or at least one fixed part of the timepiece 100.

De façon propre à l'invention, le mécanisme de commande 3 est agencé pour faire accomplir au mobile d'affichage des mois 2 une révolution complète en quatre années. Ainsi, le mobile d'affichage des mois 2 tourne d'un quarante-huitième de tour à la fin de chaque mois.In a manner specific to the invention, the control mechanism 3 is arranged to cause the month display mobile 2 to complete a complete revolution in four years. Thus, the month display mobile 2 rotates one forty-eighth of a turn at the end of each month.

Et ce mobile d'affichage des mois 2 porte, sur un secteur angulaire de 90°, au moins un marquage caractéristique d'année bissextile.And this month display mobile 2 bears, over an angular sector of 90°, at least one leap year characteristic marking.

Et le mobile d'affichage des mois 2 porte, ou bien des index, qui sont chacun agencé pour désigner un mois sur une échelle de mois statique du cadran 1, ou bien des marquages de mois équidistants et dont l'un des marquages de mois est pointé par un repère fixe du cadran 1.And the month display mobile 2 bears either indexes, each of which is arranged to designate a month on a static month scale of the dial 1, or else equidistant month markings and one of the month markings is pointed by a fixed mark on dial 1.

Les figures illustrent la construction d'un tel afficheur d'année bissextile, qui comporte, dans cette version particulière et non limitative une plaque de recouvrement, notamment sous la forme d'un cadran 1, d'un mobile d'affichage des mois 2 qui est un anneau, ou un disque portant une piste d'affichage annulaire, et un mécanisme de commande et de distribution 3. Le mobile d'affichage des mois 2 est monté pivotant autour de l'axe de rotation D. Le mécanisme de commande 3, entraîné par le mouvement 100 ou par un mécanisme de quantième 200, a pour fonction d'entraîner d'un pas angulaire le mobile d'affichage des mois 2, lors de chaque changement de mois, et de ramener ce mobile d'affichage des mois 2 dans une nouvelle position de repos jusqu'à son activation à la fin du nouveau mois.The figures illustrate the construction of such a leap year display, which comprises, in this particular and non-limiting version, a cover plate, in particular in the form of a dial 1, a mobile display of month 2 which is a ring, or a disc bearing an annular display track, and a control and distribution mechanism 3. The month display mobile 2 is pivotally mounted around the axis of rotation D. The mechanism control 3, driven by the movement 100 or by a date mechanism 200, has the function of driving the month display mobile 2 by an angular step, at each change of month, and of bringing this mobile back to display of 2 months in a new idle position until activated at the end of the new month.

Dans une première variante, et tel que visible sur les figures 1 et 2, le mécanisme d'affichage de mois et d'année bissextile 10 comporte un guichet des mois 1C en regard d'une échelle des mois 1D statique 1D du cadran 1, laquelle échelle des mois 1D comporte la succession des noms des différents mois. Plus particulièrement, l'échelle des mois 1D s'étend selon un angle au centre de 90° par rapport à l'axe de rotation D. Le mobile d'affichage des mois 2 comporte une piste d'affichage, visible au travers du guichet des mois 1C, et qui comporte quatre index équidistants 2A ou 2B, dont un seul est visible à la fois au travers du guichet des mois 1C et pointe en permanence un repère correspondant au mois en cours sur l'échelle des mois 1D. Plus particulièrement, parmi les index, l'un est un index d'année bissextile 2A et les trois autres sont des index d'années ordinaires 2B, l'index d'année bissextile 2A comportant une marque visible signalant à l'utilisateur qu'il s'agit d'une année bissextile. Cet index d'année bissextile 2A, différent des autres index d'années ordinaires 2B, peut ainsi être intégré dans l'affichage du mois. Sur les figures ces index sont triangulaires, et l'index d'année bissextile 2A porte la lettre S comme Schaltjahr (année bissextile).In a first variant, and as visible on the figures 1 and 2 , the month and leap year display mechanism 10 comprises a month window 1C opposite a static 1D month scale 1D of the dial 1, which 1D month scale comprises the succession of the names of the different months. More particularly, the month scale 1D extends at a central angle of 90° with respect to the axis of rotation D. The month display mobile 2 comprises a display track, visible through the window months 1C, and which comprises four equidistant indexes 2A or 2B, only one of which is visible both through the month window 1C and permanently points to a marker corresponding to the current month on the month scale 1D. More specifically, among the indexes, one is a 2A leap year index and the other three are 2B ordinary year indexes, the 2A leap year index having a visible mark indicating to the user that it is a leap year. This leap year index 2A, different from the other ordinary year indexes 2B, can thus be integrated into the display of the month. In the figures these indexes are triangular, and the leap year index 2A bears the letter S as Schaltjahr (leap year).

Dans une réalisation particulière, les index d'années ordinaires 2B sont différents les uns des autres, chacun comportant une indication chiffrée, visible par l'utilisateur, du nombre d'années restant à courir jusqu'à la prochaine année bissextile.In a particular embodiment, the indexes of ordinary years 2B are different from each other, each comprising a numerical indication, visible to the user, of the number of years remaining to run until the next leap year.

Dans une autre réalisation particulière, les index d'années ordinaires 2B sont différents les uns des autres, chacun comportant une indication chiffrée, visible par l'utilisateur, du nombre d'années écoulées depuis la dernière année bissextile.In another particular embodiment, the indexes of ordinary years 2B are different from each other, each comprising a numerical indication, visible to the user, of the number of years elapsed since the last leap year.

Dans une deuxième variante selon l'invention, et tel que visible sur les figures 7 à 9, le guichet des mois 1C comporte une glace 70, fixe, au moins partiellement translucide et porteuse de douze marquages supérieurs 71 translucides, statiques, chacun correspondant à un mois d'une année. Le mobile d'affichage des mois 2 tourne sous cette glace 70. Ce mobile d'affichage des mois 2 est porteur de quatre marquages inférieurs 72A et 72B, qui sont équidistants, et qui sont des marquages révélateurs, notamment colorés ou/et réfléchissants, chacun de l'amplitude angulaire d'un marquage de mois 71. Chacun des marquages inférieurs 72A ou 72B est agencé pour révéler le nom du mois en cours par contraste visuel avec les marquages supérieurs 71 des autres mois, par l'effet de la superposition locale du marquage inférieur 72A ou 72B considéré, et du marquage supérieur 71 du mois en cours. L'un des marquages inférieurs 72 est un marquage inférieur d'année bissextile 72A, et est différent des autres marquages inférieurs 72 qui sont des marquages inférieurs d'années ordinaires 72B, et est agencé pour produire, pour le mois en cours, un effet visuel pour l'utilisateur qui est différent des effets visuels des autres mois de l'année. Les quatre marquages inférieurs 72A et 72B peuvent être constitués par des surfaces colorées, différenciées entre le marquage inférieur d'année bissextile 72A, et les marquages inférieurs d'années ordinaires 72B, et visibles au travers d'un détourage des marquages supérieurs 71, ou encore par des surfaces réfléchissantes de couleurs différentes, ou autres. Le contour du marquage supérieur 71 laisse notamment la vue sur la surface du mobile d'affichage 2, et seul le nom (ou le symbole) du mois en cours est ainsi révélé. Les figures 7 à 9 illustrent un exemple non limitatif où le marquage inférieur d'année bissextile 72A est quadrillé, et les marquages inférieurs d'années ordinaires 72B comportent des hachures simples; la figure 8 illustre la visualisation d'un mois de mars d'une année ordinaire, tandis que la figure 9 illustre un mois d'octobre d'une année bissextile. La glace 70 peut, dans une réalisation particulière, n'être transparente qu'au niveau des marquages supérieurs 71, par exemple à l'intérieur des lettres du nom des mois, tel qu'illustré par les figures 8 et 9.In a second variant according to the invention, and as visible on the figures 7 to 9 , the window of the months 1C comprises a crystal 70, fixed, at least partially translucent and carrying twelve upper markings 71 translucent, static, each corresponding to a month of a year. The 2 month display mobile rotates under this glass 70. This month display mobile 2 carries four lower markings 72A and 72B, which are equidistant, and which are revealing markings, in particular colored and/or reflective, each of the angular amplitude of a month marking 71. Each of the lower markings 72A or 72B is arranged to reveal the name of the current month by visual contrast with the upper markings 71 of the other months, by the effect of the local superposition of the lower marking 72A or 72B considered , and the upper marking 71 of the current month. One of the lower markings 72 is a leap year lower marking 72A, and is different from the other lower markings 72 which are ordinary year lower markings 72B, and is arranged to produce, for the current month, an effect visual for the user which is different from the visual effects of other months of the year. The four lower markings 72A and 72B may consist of colored surfaces, differentiated between the lower leap year marking 72A, and the lower markings of ordinary years 72B, and visible through a trimming of the upper markings 71, or again by reflective surfaces of different colors, or others. The outline of the upper marking 71 notably leaves the view on the surface of the mobile display 2, and only the name (or the symbol) of the current month is thus revealed. THE figures 7 to 9 illustrate a non-limiting example where the lower leap year marking 72A is checkered, and the lower regular year markings 72B are single hatched; there figure 8 illustrates the visualization of a month of March in an ordinary year, while the figure 9 illustrates an October of a leap year. The crystal 70 may, in a particular embodiment, be transparent only at the level of the upper markings 71, for example inside the letters of the names of the months, as illustrated by the figures 8 and 9 .

Dans une troisième variante, et tel que visible sur la figure 10, le mobile d'affichage des mois 2 porte des marquages de mois 80 équidistants correspondant à la succession des mois sur quatre années et dont l'un des marquages de mois 80 est pointé par un repère fixe 83 du cadran 1 qui est un index 84 ou/et une glace translucide colorée 85. Ces marquages de mois 80 sont constitués par quarante-huit marquages de mois 81 et 82, parmi lesquels douze marquages successifs sont des marquages de mois d'année bissextile 81, et sont différents des trente-six autres marquages 80 qui sont des marquages de mois d'années ordinaires 82. La figure 10 illustre un exemple non limitatif où les marquages de mois d'années ordinaires 82 comportent des noms des mois avec un caractère mince, tandis que les marquages de mois d'année bissextile 81 comportent un caractère plus épais, et où le mois en cours est visible sous une glace translucide colorée 85 qui fait elle-même face à un index 84. On comprend que le mobile d'affichage des mois 2 tourne d'un quarante-huitième de tour à la fin de chaque mois.In a third variant, and as visible on the figure 10 , the month display mobile 2 bears equidistant month markings 80 corresponding to the succession of months over four years and of which one of the month markings 80 is pointed by a fixed marker 83 of the dial 1 which is an index 84 or/and a colored translucent crystal 85. These month markings 80 consist of forty-eight month markings 81 and 82, among which twelve successive markings are leap year month markings 81, and are different from the thirty-six other 80 markings which are ordinary year month markings 82. The figure 10 illustrates a non-limiting example where the ordinary year month markings 82 have month names with a thin character, while the leap year month markings 81 have a thicker character, and where the current month is visible under a colored translucent glass 85 which itself faces a index 84. It is understood that the month display mobile 2 rotates by one forty-eighth of a turn at the end of each month.

En ce qui concerne le mécanisme de commande 3, de façon particulière, non limitative, et illustrée sur les figures 3 à 6, ce mécanisme de commande 3 comporte un mobile d'entrée 31, qui est agencé pour être entraîné par la roue des heures du mouvement 100 ou par un rouage engrenant avec la roue des heures ou par un mécanisme de quantième 200. Ce mobile d'entrée 31 comporte un doigt 311, qui est agencé pour faire pivoter une première étoile 321 solidaire d'une roue intermédiaire 32. Cette roue intermédiaire 32 engrène avec un rouage de transformation 33, pour entraîner une roue d'arrêt 34. La roue d'arrêt 34 comporte des creux 34A, qui sont agencés pour coopérer avec un cliquet 35 rappelé par un ressort 352 vers une position de repos. Cette roue d'arrêt 34 est solidaire d'une deuxième étoile 341, dont les dents 342 sont agencées pour entraîner des picots 22, que comporte le mobile d'affichage des mois 2, quand la roue d'arrêt 34 pivote, et pour maintenir en position ces picots 22 quand la roue d'arrêt 34 est maintenue à l'arrêt par le cliquet 35 en l'absence de pivotement de la première étoile 321.With regard to the control mechanism 3, in a particular, non-limiting way, and illustrated on the figures 3 to 6 , this control mechanism 3 includes an input wheel set 31, which is arranged to be driven by the hour wheel of the movement 100 or by a gear train meshing with the hour wheel or by a date mechanism 200. This wheel set input 31 includes a finger 311, which is arranged to cause a first star wheel 321 integral with an intermediate wheel 32 to pivot. This intermediate wheel 32 meshes with a transformation gear train 33, to drive a stop wheel 34. The stopper 34 has recesses 34A, which are arranged to cooperate with a pawl 35 returned by a spring 352 to a rest position. This stop wheel 34 is integral with a second star 341, the teeth 342 of which are arranged to drive pins 22, which the month display wheel set 2 comprises, when the stop wheel 34 pivots, and to maintain in position these pins 22 when the stop wheel 34 is held stationary by the pawl 35 in the absence of pivoting of the first star 321.

Le mobile d'entrée 31 pivote de 1/31 de tour à la fin de chaque journée ; de préférence il est entraîné par un mécanisme de quantième 200, et, selon le type de mécanisme de quantième (quantième perpétuel ou quantième annule notamment), cette rotation peut classiquement nécessiter 2 à 3 heures en fin de journée. Le mécanisme de quantième effectue le rattrapage de fin de mois.The entry mobile 31 pivots by 1/31 of a turn at the end of each day; preferably it is driven by a date mechanism 200, and, depending on the type of date mechanism (perpetual calendar or annular calendar in particular), this rotation can conventionally require 2 to 3 hours at the end of the day. The date mechanism carries out the end-of-month catch-up.

Plus particulièrement, le mobile d'entrée 31 est solidaire d'une roue d'un tel mécanisme de quantième 200.More particularly, the entry mobile 31 is integral with a wheel of such a date mechanism 200.

Il est encore envisageable, même si l'intérêt en est limité, que le mécanisme d'affichage de mois et d'année bissextile 10 soit indépendant de tout mécanisme de quantième, il est alors entraîné par un mouvement 100, et il incombe à l'utilisateur d'effectuer le rattrapage de fin de mois.It is still possible, even if the interest is limited, for the month and leap year display mechanism 10 to be independent of any date mechanism, it is then driven by a movement 100, and it is the responsibility of the user to carry out the end-of-month catch-up.

Plus particulièrement, le mobile d'entrée 31 est agencé pour faire pivoter une fois par mois, le dernier jour du mois, la première étoile 321.More particularly, the input mobile 31 is arranged to rotate once a month, on the last day of the month, the first star 321.

Dans le cas particulier d'un calendrier de type lunaire, l'entraînement classique d'une roue de 59 dents permet de déclencher le pivotement de la première étoile 321 le dernier jour d'un mois lunaire, pour un affichage de calendrier zodiacal ou musulman ou israélite ou similaire.In the particular case of a lunar-type calendar, the conventional drive of a 59-tooth wheel makes it possible to trigger the pivoting of the first star 321 on the last day of a lunar month, for a Zodiac or Muslim or Israelite or similar calendar display.

Plus particulièrement, la roue d'arrêt 34 comporte une alternance de creux 34A et de pointes 34B, et la roue intermédiaire 32 et le rouage de transformation 33 sont agencés pour entraîner la roue d'arrêt 34 du pas angulaire entre deux creux 34A successifs lors de chaque rotation élémentaire de la première étoile 321.More particularly, the stopper wheel 34 comprises alternating recesses 34A and spikes 34B, and the intermediate wheel 32 and the transformation cog 33 are arranged to drive the stopper wheel 34 of the angular pitch between two successive recesses 34A during of each elementary rotation of the first star 321.

Plus particulièrement, chaque rotation élémentaire de la première étoile 321 fait monter un galet 351, que comporte le cliquet 35, sur une rampe de came entre un creux 34A et une pointe 34B sur une première partie du pas angulaire, à l'encontre du ressort 352 pour armer celui-ci. Et ce ressort 352 est agencé pour, lors de son désarmage après le passage de la pointe 34B par le galet 351, faire pivoter la roue d'arrêt 34 sur une deuxième partie du pas angulaire jusqu'à une nouvelle position de repos dans laquelle le galet 351 est calé dans un creux 34A jusqu'à la fin du mois suivant.More particularly, each elementary rotation of the first star 321 raises a roller 351, which the pawl 35 comprises, on a cam ramp between a hollow 34A and a point 34B on a first part of the angular pitch, against the spring 352 to arm this one. And this spring 352 is arranged to, when it is disarmed after the tip 34B has passed through the roller 351, cause the stop wheel 34 to pivot over a second part of the angular pitch to a new rest position in which the roller 351 is wedged in a hollow 34A until the end of the following month.

Plus particulièrement, chaque rotation de la roue d'arrêt 34 commande une rotation de 1/48ème de tour du mobile d'affichage des mois 2.More specifically, each rotation of the stop wheel 34 commands a rotation of 1/ 48th of a turn of the month display mobile 2.

Plus particulièrement, chaque rotation élémentaire de la première étoile 321 entraîne une rotation d'un quart de tour de la roue d'arrêt 34.More particularly, each elementary rotation of the first star 321 causes a rotation of a quarter turn of the stop wheel 34.

Dans la variante non limitative illustrée par les figures, lors du passage du dernier jour d'un mois au premier jour du mois suivant, le mobile d'entrée 31 entraîne la roue intermédiaire 32 et lui fait parcourir un huitième de tour. Le rouage de transformation 33 est alors agencé faire pivoter la roue d'arrêt 34 d'un quart de tour.In the non-limiting variant illustrated by the figures, when changing from the last day of a month to the first day of the following month, the input mobile 31 drives the intermediate wheel 32 and causes it to go through an eighth of a turn. The transformation train 33 is then arranged to pivot the stop wheel 34 by a quarter turn.

La roue d'arrêt 34 est ainsi entraînée par le mobile d'entrée 31 et la transformation par la roue intermédiaire et le rouage de transformation 33, d'environ un quart de tour. De cette rotation de 90°, environ 45° sont utilisés pour dégager le cliquet 35 et pour armer son ressort 352, jusqu'à la position de la figure 6. Après le passage de la pointe 34B par le galet 351,.le ressort 352 pousse d'un coup bref le galet 351 qui tombe dans le prochain creux 34A de la roue d'arrêt 34, et cette impulsion commande le pivotement du mobile d'affichage des mois 2 de un quarante-huitième de tour, pour afficher le nouveau mois dans le guichet 1C. Ainsi la roue d'arrêt 34 est constamment en contact avec les picots 22 du mobile d'affichage des mois 2. Cette roue d'arrêt 34 repose tout le mois sur le cliquet 35, et ce n'est que lors du mouvement mensuel mobile d'entrée 31 que la roue d'arrêt 34 effectue au total une rotation d'un quart de tour, entre le dernier jour du mois précédent et le premier jour du nouveau mois. Le cliquet 35 repose également pendant tout le mois sur un creux 34A de la roue d'arrêt 34, et n'est déplacé le long de celle-ci que pendant la manoeuvre mensuelle imprimée par le mobile d'entrée 31.The stop wheel 34 is thus driven by the input mobile 31 and the transformation by the intermediate wheel and the transformation gear train 33, by approximately a quarter turn. From this 90° rotation, approximately 45° are used to disengage the pawl 35 and to arm its spring 352, up to the position of the figure 6 . After the passage of the point 34B by the roller 351, the spring 352 pushes the roller 351 with a brief blow which falls into the next hollow 34A of the stop wheel 34, and this impulse controls the pivoting of the mobile of display of months 2 of a forty-eighth turn, to display the new month in window 1C. Thus the stopper wheel 34 is constantly in contact with the pins 22 of the month display mobile 2. This stopper wheel 34 rests all month on the pawl 35, and it is only during the mobile monthly movement input 31 that the stop wheel 34 performs a total rotation of a quarter turn, between the last day of the month previous and the first day of the new month. The pawl 35 also rests throughout the month on a hollow 34A of the stop wheel 34, and is moved along the latter only during the monthly maneuver given by the entry mobile 31.

Naturellement d'autres facteurs de démultiplication peuvent être employés sans s'éloigner de l'invention.Of course, other multiplication factors can be used without departing from the invention.

De façon avantageuse, le mécanisme d'affichage 10 comporte encore un mécanisme de correction de mois 20, qui est agencé pour modifier la position angulaire du mobile d'affichage des mois 2 sur commande de l'utilisateur.Advantageously, the display mechanism 10 also comprises a month correction mechanism 20, which is arranged to modify the angular position of the month display mobile 2 on command from the user.

Dans une variante, ce mécanisme de correction 20 comporte un élément d'entraînement 222 manoeuvrable directement par l'utilisateur et agencé pour entraîner directement le mobile d'affichage des mois 2, par engrènement, friction, ou coopération magnétique.In a variant, this correction mechanism 20 includes a drive element 222 that can be operated directly by the user and arranged to drive the month display mobile 2 directly, by meshing, friction, or magnetic cooperation.

Dans une variante, le mécanisme de correction 20 comporte un actionneur manoeuvrable directement par l'utilisateur et agencé pour entraîner la roue d'arrêt 34 en rotation.In a variant, the correction mechanism 20 comprises an actuator that can be operated directly by the user and arranged to drive the stop wheel 34 in rotation.

Les figures 11 à 13 illustrent un exemple non limitatif d'un tel mécanisme de correction de mois 20, qui comporte un mécanisme de commande par l'utilisateur, non représenté, pilotant une roue de correction 21 qui est agencée pour mouvoir un pignon de correction 24 solidaire d'une étoile de correction 23, laquelle est agencée pour entraîner les picots 22 du mobile d'affichage des mois 2, de la même façon que le fait la deuxième étoile 341 en fin de mois ; naturellement ce mécanisme de correction de mois 20 est dimensionnée pour pouvoir vaincre, sans déformation, l'effort résistant qui est appliqué en permanence par le ressort 352 sur cette même deuxième étoile 341.THE figures 11 to 13 illustrate a non-limiting example of such a month correction mechanism 20, which comprises a user-operated mechanism, not shown, driving a correction wheel 21 which is arranged to move a correction pinion 24 integral with a correction star 23, which is arranged to drive the pins 22 of the month display mobile 2, in the same way as the second star 341 does at the end of the month; naturally this month correction mechanism 20 is sized to be able to overcome, without deformation, the resistant force which is permanently applied by the spring 352 on this same second star 341.

Dans une alternative, la correction peut être effectuée de façon analogue à celle du jour de la semaine pour les montres à calendrier affichant jour et quantième : dans une des positions de la tige 221 et notamment en position T2 de la tige, correction du quantième dans un premier sens de rotation, et correction du jour de la semaine dans un deuxième sens de rotation opposé au premier. Dans le cadre de l'invention, la correction serait alors la suivante : en position T2 de la tige, correction du quantième dans un premier sens de rotation, et correction de la position du mobile d'affichage des mois 2 dans un deuxième sens de rotation opposé au premier.Alternatively, the correction can be carried out in a manner analogous to that of the day of the week for calendar watches displaying day and date: in one of the positions of the stem 221 and in particular in position T2 of the stem, correction of the date in a first direction of rotation, and correction of the day of the week in a second direction of rotation opposite to the first. In the context of the invention, the correction would then be as follows: in position T2 of the stem, correction of the date in a first direction of rotation, and correction of the position of the month display mobile 2 in a second direction of rotation opposite to the first.

L'invention concerne encore un mécanisme de calendrier 300, qui comporte un mécanisme de quantième 200 agencé pour coopérer avec un mouvement 100 d'une pièce d'horlogerie 1000, ce mécanisme de calendrier 300 comportant au moins un mécanisme d'affichage 10 selon l'invention. Plus particulièrement, ce mécanisme de quantième 200 comporte un rouage, qui est agencé pour décompter le nombre de jours du mois en cours, et pour commander la rotation du mobile d'entrée 31 de 1/31ème de tour du premier au 27 du mois, et pour commander, le dernier jour du mois en cours, sa rotation de 4/31 èmes de tour quand le mois en cours comporte 28 jours, ou de 3/31 èmes de tour quand le mois en cours comporte 29 jours, ou 2/31èmes de tour quand le mois en cours comporte 30 jours, ou 1/31ème de tour quand le mois en cours comporte 31 jours, de façon à faire effectuer au mobile d'entrée 31 un tour complet pendant le mois en cours.The invention also relates to a calendar mechanism 300, which comprises a date mechanism 200 arranged to cooperate with a movement 100 of a timepiece 1000, this calendar mechanism 300 comprising at least one display mechanism 10 according to the 'invention. More specifically, this date mechanism 200 comprises a gear train, which is arranged to count down the number of days of the current month, and to control the rotation of the input mobile 31 by 1/31 th of a turn from the first to the 27th of the month. , and to order, on the last day of the current month, its rotation of 4/31 ths of a turn when the current month has 28 days, or 3/31 ths of a turn when the current month has 29 days, or 2 /31sts of a turn when the current month has 30 days, or 1/31st of a turn when the current month has 31 days, so as to cause the input mobile 31 to perform a complete turn during the current month.

Plus particulièrement, le mécanisme de quantième 200 comporte un afficheur de quantième 1B, et le mobile d'entrée 31 est agencé pour commander la position de l'afficheur de quantième 1B.More particularly, the date mechanism 200 comprises a date display 1B, and the input mobile 31 is arranged to control the position of the date display 1B.

Plus particulièrement, le mécanisme de quantième 200 comporte un correcteur de quantième 220 agencé pour modifier la position de l'afficheur de quantième 1B.More particularly, the date mechanism 200 comprises a date corrector 220 arranged to modify the position of the date display 1B.

Plus particulièrement, le correcteur de quantième 220 est encore agencé pour modifier la position angulaire du mobile d'affichage des mois 2.More particularly, the date corrector 220 is further arranged to modify the angular position of the month display mobile 2.

La correction est décrite ci-dessus pour le cas du calendrier grégorien. Un mécanisme de correction analogue, commandé par le mouvement ou par l'utilisateur, peut être effectué pour les autres types de calendrier, notamment de type lunaire, qui nécessitent des rattrapages à certaines périodes.The correction is described above for the case of the Gregorian calendar. An analogous correction mechanism, controlled by the movement or by the user, can be carried out for the other types of calendar, in particular of the lunar type, which require corrections at certain periods.

L'invention concerne encore une pièce d'horlogerie 1000 comportant au moins un mouvement d'horlogerie 100 agencé pour entraîner au moins tel un mécanisme d'affichage 10, ou/et pour entraîner au moins un tel mécanisme de calendrier 300.The invention also relates to a timepiece 1000 comprising at least one timepiece movement 100 arranged to drive at least such a display mechanism 10, and/or to drive at least such a calendar mechanism 300.

Plus particulièrement, cette pièce d'horlogerie 1000 est une montre.More particularly, this timepiece 1000 is a watch.

Naturellement, le principe de l'invention peut être étendu à d'autres types de pièces d'horlogerie à calendrier, notamment des montres astronomiques ou des horloges astronomiques, pour lesquelles il est en particulier possible de gérer, selon le principe de l'invention, l'affichage des années en plus de l'affichage des mois, en distinguant, sur un mobile d'affichage des années, les années ordinaires, les années bissextiles, les années séculaires non divisibles par 400 et non bissextiles qui ont un mois de février de 28 jours, et les années séculaires divisibles par 400 et bissextiles dites années quadriséculaires, qui ont des mois de février de 29 jours, ou encore les années quadrimillénaires, qui, quoique théoriquement bissextiles, ont un mois de février de 28 jours.Naturally, the principle of the invention can be extended to other types of calendar timepieces, in particular astronomical watches or astronomical clocks, for which it is in particular possible to manage, according to the principle of the invention , the display of the years in addition to the display of the months, distinguishing, on a year display mobile, the ordinary years, the years leap years, secular years not divisible by 400 and not leap years which have a 28-day month of February, and secular years divisible by 400 and leap years called quadrisecular years, which have February months of 29 days, or quadrimillenary years , which, although theoretically leap, have a 28-day month of February.

En somme, grâce à la présente invention, il est possible d'intégrer facilement dans toute pièce d'horlogerie un affichage qui donne à l'utilisateur des renseignements sur le fait de savoir s'il se trouve dans une année bissextile, et/ou, selon l'organisation des index d'affichage, combien d'années sont à décompter jusqu'à la prochaine année bissextile, ou depuis la dernière. On a ainsi connaissance de la durée théorique de mois de février, et du nombre de jours de l'année en cours. L'invention permet un réglage correct des mécanismes de type calendrier perpétuel.In short, thanks to the present invention, it is possible to easily integrate into any timepiece a display which gives the user information on whether he is in a leap year, and/or , depending on the organization of the display indexes, how many years are to count down to the next leap year, or since the last. We thus know the theoretical duration of the month of February, and the number of days in the current year. The invention allows correct adjustment of mechanisms of the perpetual calendar type.

L'invention permet une grande économie de volume dans la boîte de la pièce d'horlogerie concernée. En outre, aucune zone indicatrice supplémentaire n'est nécessaire sur le cadran de la pièce d'horlogerie. Les affichages classiques et essentiels pour un montre-bracelet, comme l'heure et la date, restent parfaitement clairs et lisibles, et dans le premier plan.The invention allows a great saving in volume in the case of the timepiece concerned. Furthermore, no additional indicator zone is necessary on the dial of the timepiece. The classic and essential displays for a wristwatch, such as the time and the date, remain perfectly clear and legible, and in the foreground.

L'affichage est conçu selon le principe du calendrier grégorien ou du calendrier julien, est adaptable à tout autre type de calendrier, notamment lunaire. De plus, cet affichage n'est pas temporellement limité, et ne perd pas sa fonction à échéance.The display is designed according to the principle of the Gregorian calendar or the Julian calendar, is adaptable to any other type of calendar, in particular lunar. Moreover, this display is not temporally limited, and does not lose its function on expiry.

Le mécanisme d'affichage selon l'invention est économique, ainsi que son mécanisme de correction.The display mechanism according to the invention is economical, as is its correction mechanism.

Claims (21)

  1. Month and leap year display mechanism (10) for a timepiece (1000), said mechanism (10) comprising a leap year display integrated in a month display, said mechanism (10) comprising a movement (100) or being arranged to cooperate with a movement (100), which movement (100) is arranged to drive, via a control mechanism (3) comprised in said mechanism (10), a month display wheel set (2) formed by a disc or a ring rotating about an axis of rotation (D) and arranged underneath a cover plate or underneath a dial (1), wherein a month window (1C) contained within an angular sector of 90° about said axis of rotation (D) is arranged to allow a user to see a quarter of said month display wheel set (2), the other three-quarters of said month display wheel set (2) being concealed from the user, wherein said control mechanism (3) is arranged to make said month display wheel set (2) complete one revolution in four years, mechanism in which said month window (1C) is facing a month scale (1D) extending at a central angle of 90° with respect to said axis of rotation (D), said month display wheel set (2) and comprises four equidistant indices, only one of which is visible at a time through said month window (1C) and permanently points to a mark corresponding to the current month on said month scale (1D) of said indices, one is a leap year index (2A) and the other three are ordinary year indices (2B), said leap year index (2A) comprising a visible marking indicating to the user that it is a leap year.
  2. Display mechanism (10) according to claim 1, characterized in that said month display wheel set (2) is a display ring or disc, which bears indices arranged to indicate a month on a static month scale (1D) of said dial (1), said indices being formed by four equidistant indices (2A; 2B), only one of which is visible at a time through said window (1C), said indices being arranged to point to the current month on a month scale (1D) of said dial (1), and in that, of said four indices (2A; 2B), a leap year index (2A) is different from the other ordinary year indices (2B), and can be integrated in the month display.
  3. Display mechanism (10) according to claim 2, characterized in that said ordinary year indices (2B) are different from one another, each comprising a numbered indication, visible to the user, of the number of years remaining until the next leap year.
  4. Display mechanism (10) according to claim 2, characterized in that said ordinary year indices (2B) are different from one another, each comprising a numbered indication, visible to the user, of the number of years elapsed since the last leap year.
  5. Month and leap year display mechanism (10) for a timepiece (1000), said mechanism (10) comprising a leap year display integrated in a month display, said mechanism (10) comprising a movement (100) or being arranged to cooperate with a movement (100), which movement (100) is arranged to drive, via a control mechanism (3) comprised in said mechanism (10), a month display wheel set (2) formed by a disc or a ring rotating about an axis of rotation (D) and arranged underneath a cover plate or underneath a dial (1), wherein a month window (1C) contained within an angular sector of 90° about said axis of rotation (D) is arranged to allow a user to see a quarter of said month display wheel set (2), the other three-quarters of said month display wheel set (2) being concealed from the user, wherein said control mechanism (3) is arranged to make said month display wheel set (2) complete one revolution in four years, mechanism in which said month window (1C) comprises an at least partially translucent crystal (70) bearing twelve translucent upper markings (71) of the months of the year and underneath which crystal (70) rotates said month display set (2) which bears four equidistant, coloured and/or reflective lower markings (72), each having the angular amplitude of one month marking and arranged to reveal the name of the current month by visual contrast with the upper markings (71) of the other months, wherein one of said lower markings (72) is a leap year lower marking (72A) and is different from the other lower markings (72) which are ordinary year lower markings (72B), and is arranged to produce, for the current month, a visual effect for the user which is different from the visual effects of the other months of the year.
  6. Month and leap year display mechanism (10) for a timepiece (1000), said mechanism (10) comprising a leap year display integrated in a month display, said mechanism (10) comprising a movement (100) or being arranged to cooperate with a movement (100), which movement (100) is arranged to drive, via a control mechanism (3) comprised in said mechanism (10), a month display wheel set (2) formed by a disc or a ring rotating about an axis of rotation (D) and arranged underneath a cover plate or underneath a dial (1), wherein a month window (1C) contained within an angular sector of 90° about said axis of rotation (D) is arranged to allow a user to see a quarter of said month display wheel set (2), the other three-quarters of said month display wheel set (2) being concealed from the user, wherein said control mechanism (3) is arranged to make said month display wheel set (2) complete one revolution in four years, mechanism in which said month display wheel set (2) bears equidistant month markings (80) corresponding to the succession of months over four years, and wherein one of said month markings (80) is pointed to by a fixed mark (83) of said dial (1) which is an index (84) and/or a coloured translucent crystal (85), said month markings (80) being formed by forty-eight month markings (81; 82), of which twelve successive markings are leap year month markings (81) and are different from the other thirty-six markings (80) which are ordinary year month markings (82).
  7. Display mechanism (10) according to claim 6, characterized in that said control mechanism (3) comprises an input wheel set (31) which is arranged to be driven by the hour wheel of said movement (100) or by a train meshing with said hour wheel or by a date mechanism (200), said input wheel set (31) comprising a finger (311) arranged to pivot a first star wheel (321) integral with an intermediate wheel (32) which meshes with a transformation train (33) to drive a stop wheel (34) which comprises hollows (34A) arranged to cooperate with a click (35) returned by a spring (352) to a rest position, said stop wheel (34) is integral with a second star wheel (341), whose teeth (342) are arranged to drive pins (22) comprised in said month display wheel set (2) when said stop wheel (34) pivots and to hold said pins (22) in position when said stop wheel (34) is kept stationary by said click (35) in the absence of pivoting of said first star wheel (321).
  8. Display mechanism (10) according to claim 7, characterized in that said input wheel set (31) is arranged to pivot said first star wheel (321) once per month, on the last day of the month.
  9. Display mechanism (10) according to any of claims 7 or 8, characterized in that said stop wheel (34) comprises an alternation of hollows (34A) and peaks (34B), and in that said intermediate wheel (32) and said transformation train (33) are arranged to drive stop wheel (34) through the angular pitch between two successive hollows (34A) during each basic rotation of said first star wheel (321).
  10. Display mechanism (10) according to claim 9, characterized in that each basic rotation of said first star wheel (321) causes a roller (351), comprised in said click (35), to move up a cam ramp between a said hollow (34A) and a said peak (34B) on a first part of said angular pitch, against said spring (352) in order to wind the latter, and in that said spring (352) is arranged, during the unwinding thereof after said roller (351) has passed over said peak (34B), to pivot said stop wheel (34) on a second part of said angular pitch to a new rest position in which said roller (351) is wedged in a said hollow (34A) until the end of the following month.
  11. Display mechanism (10) according to any of claims 7 to 10, characterized in that each rotation of said stop wheel (34) causes a rotation of 1/48th of a revolution of said month display wheel set (2).
  12. Display mechanism (10) according to any of claims 7 to 11, characterized in that each basic rotation of said first star wheel (321) causes a rotation of a quarter of a revolution of said stop wheel (34).
  13. Display mechanism (10) according to any of claims 1 to 12, characterized in that said display mechanism (10) comprises a month correction mechanism (20) arranged to change the angular position of said month display wheel set (2) on command by the user.
  14. Display mechanism (10) according to claim 13, characterized in that said correction mechanism (20) comprises a drive element directly operable by the user and arranged to drive said month display wheel set (2) directly, by meshing, friction or magnetic cooperation.
  15. Display mechanism (10) according to claim 13 or 14, characterized in that said correction mechanism (20) comprises an actuator directly operable by the user and arranged to drive said stop wheel (34) in rotation.
  16. Calendar mechanism (300) comprising a date mechanism (200) arranged to cooperate with a movement (100) of a timepiece (1000), wherein said calendar mechanism (300) includes at least one display mechanism (10) according to claim 7 and to any of claims 1 to 15, and said date mechanism (200) includes a train arranged to count the number of days of the current month, and to cause said input wheel set (31) to rotate 1/31st of a revolution from the first to the 27th of the month, and, on the last day of the current month, to rotate 4/31sts of a revolution when the current month has 28 days, or 3/31sts of a revolution when the current month has 29 days, or 2/31sts of a revolution when the current month has 30 days, or 1/31st of a revolution when the current month has 31 days, in order to make said input wheel set (31) complete one revolution during the current month.
  17. Calendar mechanism (300) according to claim 16, characterized in that said date mechanism (200) comprises a date display (1B), and in that said input wheel set (31) is arranged to control the position of said date display (1B).
  18. Calendar mechanism (300) according to claim 16 or 17, characterized in that said date mechanism (200) comprises a date corrector (220) arranged to change the position of said date display (1B).
  19. Calendar mechanism (300) according to claim 18, characterized in that said date corrector (220) is also arranged to change the angular position of said month display wheel set (2).
  20. Timepiece (1000) including at least one timepiece movement (100) arranged to drive at least one display mechanism (10) according to any of claims 1 to 15, and/or to drive at least one calendar mechanism (300) according to any of claims 16 to 19.
  21. Timepiece (1000) according to claim 20, characterized in that said timepiece (1000) is a watch.
EP19157299.9A 2019-02-14 2019-02-14 Mechanism for displaying month and leap year for a timepiece Active EP3696617B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP19157299.9A EP3696617B1 (en) 2019-02-14 2019-02-14 Mechanism for displaying month and leap year for a timepiece
US16/783,960 US11493885B2 (en) 2019-02-14 2020-02-06 Month and leap year display mechanism for timepieces
PCT/EP2020/053330 WO2020165095A1 (en) 2019-02-14 2020-02-10 Month and leap year display mechanism for timepieces
CN202080014615.3A CN113424112B (en) 2019-02-14 2020-02-10 Month and leap year display mechanism for a timepiece
EP20702857.2A EP3924784B1 (en) 2019-02-14 2020-02-10 Month and leap year display mechanism for timepieces
JP2021540536A JP7174858B2 (en) 2019-02-14 2020-02-10 Month and leap year indicators for clocks
US17/420,290 US12001170B2 (en) 2019-02-14 2020-02-10 Month and leap year display mechanism for timepieces
JP2020021348A JP6837166B2 (en) 2019-02-14 2020-02-12 Month / leap year display mechanism for timekeepers
CN202010090486.8A CN111562734B (en) 2019-02-14 2020-02-13 Month and leap year display mechanism for a timepiece
RU2020106719A RU2727026C1 (en) 2019-02-14 2020-02-13 Months and leap years indication mechanism for clocks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19157299.9A EP3696617B1 (en) 2019-02-14 2019-02-14 Mechanism for displaying month and leap year for a timepiece

Publications (2)

Publication Number Publication Date
EP3696617A1 EP3696617A1 (en) 2020-08-19
EP3696617B1 true EP3696617B1 (en) 2023-07-05

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EP19157299.9A Active EP3696617B1 (en) 2019-02-14 2019-02-14 Mechanism for displaying month and leap year for a timepiece
EP20702857.2A Active EP3924784B1 (en) 2019-02-14 2020-02-10 Month and leap year display mechanism for timepieces

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20702857.2A Active EP3924784B1 (en) 2019-02-14 2020-02-10 Month and leap year display mechanism for timepieces

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US (2) US11493885B2 (en)
EP (2) EP3696617B1 (en)
JP (2) JP7174858B2 (en)
CN (2) CN113424112B (en)
RU (1) RU2727026C1 (en)
WO (1) WO2020165095A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3696617B1 (en) 2019-02-14 2023-07-05 Glashütter Uhrenbetrieb GmbH Mechanism for displaying month and leap year for a timepiece

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Also Published As

Publication number Publication date
US20220091563A1 (en) 2022-03-24
JP6837166B2 (en) 2021-03-03
EP3924784B1 (en) 2023-08-09
JP2022517249A (en) 2022-03-07
EP3696617A1 (en) 2020-08-19
CN113424112A (en) 2021-09-21
JP7174858B2 (en) 2022-11-17
CN111562734A (en) 2020-08-21
US11493885B2 (en) 2022-11-08
CN113424112B (en) 2022-09-27
US20200264564A1 (en) 2020-08-20
RU2727026C1 (en) 2020-07-17
CN111562734B (en) 2021-11-23
WO2020165095A1 (en) 2020-08-20
US12001170B2 (en) 2024-06-04
JP2020134525A (en) 2020-08-31
EP3924784A1 (en) 2021-12-22

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