EP3644130B1 - Datumsmechanismus - Google Patents

Datumsmechanismus Download PDF

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Publication number
EP3644130B1
EP3644130B1 EP18201841.6A EP18201841A EP3644130B1 EP 3644130 B1 EP3644130 B1 EP 3644130B1 EP 18201841 A EP18201841 A EP 18201841A EP 3644130 B1 EP3644130 B1 EP 3644130B1
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EP
European Patent Office
Prior art keywords
month
thirty
day
tooth
rotation
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Application number
EP18201841.6A
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English (en)
French (fr)
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EP3644130A1 (de
Inventor
Kadmiel WHARTON
Julien GATINET
Stéphane Berthoud
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Dubois and Depraz SA
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Dubois and Depraz SA
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Priority to EP18201841.6A priority Critical patent/EP3644130B1/de
Publication of EP3644130A1 publication Critical patent/EP3644130A1/de
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25306—Independent date indicating devices activated by hand or by clockwork, e.g. calendar watches
    • G04B19/25313—Independent date indicating devices activated by hand or by clockwork, e.g. calendar watches driven or released by a steady movement
    • G04B19/2532—Independent date indicating devices activated by hand or by clockwork, e.g. calendar watches driven or released by a steady movement automatically corrected at the end of mounths having less than 31 days
    • 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
    • G04B19/2536—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 automatically corrected at the end of months having less than 31 days
    • 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

Definitions

  • the present invention relates to a date mechanism for a timepiece comprising a display crown bearing date indications intended to be designated successively in order to be read, typically through a window or using a pointer.
  • the patent application EP 1 596 261 A1 describes an annual calendar mechanism for a timepiece comprising an internally toothed date display crown bearing indications intended to be read through a window.
  • the drive of this display ring in rotation under the window is achieved on the one hand, by daily actuation of its internal teeth by a first finger of a drive member and on the other hand by the actuation every thirtieth of the month for months less than thirty-one days of a satellite carried by this crown and located on a level different from that of the internal teeth of the crown by a second finger of said drive member.
  • the date mechanism described in this patent application has the drawback that its display crown comprises means, including on the one hand its internal teeth and on the other hand its month satellite, distinct for its rotation drive, these means located on different levels. This takes up a lot of space, especially since the satellite, integral with the display crown, pivots with it.
  • the European patent application EP 1 666 991 A1 describes an annual calendar mechanism for a timepiece comprising a date-driving mobile unit making one revolution in twenty-four hours, this mobile unit being equipped with a first finger driving a step and once a day a first stage of a date crown comprising thirty-one internal teeth, said mobile being equipped with a second finger driving by one step and at the end of one month less of thirty-one days, one of the five pins with which a board is fitted with an annual wheel arranged coaxially with the date crown, said mechanism further comprising a reference connecting at the end of each month, said annual wheel to a lug disposed inside a second stage of said date crown.
  • the mechanism described in this application also has the drawback of taking up space.
  • its display ring comprises means, including on the one hand its internal teeth and on the other hand the lug that it carries via its second stage, distinct for its drive in rotation, these means being located on different levels .
  • An object of the present invention is to provide a date mechanism allowing the correct passage of the date display at the end of the month whether the month is a month of thirty days or a month of thirty-one days, said mechanism comprising a display crown of which only the internal teeth, located on a single level, allow it to rotate.
  • the invention also relates to a timepiece such as a wristwatch, a pocket watch or a table calendar comprising such a date mechanism.
  • the date mechanism according to the invention is typically fixed to a frame such as a plate or a bridge of a watch movement.
  • the frame can also be an additional board, the date mechanism and said board typically forming a module. Unless otherwise indicated, the various movements described are described in relation to said frame.
  • the month cam typically comprises hollowed out parts, all of the same depth, and non-hollowed out parts, distributed over adjacent angular sectors. This is typically a cam of twelve comprising twelve angular sectors of 30 ° alternating, in the order of the months which they represent, angular portions hollowed out and not hollowed out.
  • the month cam rotates each month, typically by a twelfth of a turn, to present a part that is scooped out with the probe during months of less than thirty-one days and to present a part that is not dug with the probe during months of thirty-one and-one days.
  • the feeler of the rocker is typically held in abutment against the months cam by means of a spring called a “rocker spring”, this spring being typically fixed to the frame.
  • rocker spring a spring that is typically fixed to the frame.
  • rest position the position of the rocker in which its feeler is resting against the month cam.
  • internally toothed ring gear designates an internally toothed ring. It is typically a hollow disc comprising teeth uniformly distributed over its interior contour.
  • a date mechanism 1 comprises a date display crown 2, a cam of twelve 3, a lever 4 comprising a feeler 4a and carrying a pawl 4b, and a wheel 5 of twenty-four hours wearing a finger 6.
  • the pawl 4b carried by the latch 4 is able to pivot about an axis of rotation A3 (virtual or imaginary), fixed with respect to the latch 4.
  • the date mechanism 1 is integrated into a watch movement comprising a plate 100.
  • the date display crown 2 comprises indications 7 ranging from one to thirty-one and corresponding to the dates of the months, uniformly distributed over a circumference of its upper surface and intended to be read through an aperture 8 of which the position is fixed relative to the plate 100.
  • the window 8 is typically produced in a dial positioned above the display crown 2. In the figures, although such a dial is not shown for reasons of legibility, the position of the window 8 is materialized.
  • the rocker 4 is intended to pivot around an axis of rotation O (virtual or imaginary) between a rest position, in which its feeler 4a is held in abutment against the cam of twelve 3, typically by a rocker spring 9 fixed on the plate 100, and a predetermined position called “extreme position” corresponding to the position of the rocker 4 in which the feeler 4a is the furthest from the cam of twelve 3.
  • O axis of rotation
  • the pawl 4b which it carries actuates the display crown 2, the positioning of which is ensured by a positioning device 10 comprising a jumper 10a.
  • the end 4b ′ of the pawl 4b cooperating with the teeth of the display crown 2 is kept pivoted in the counterclockwise direction by a pawl spring 11, fixed on the rocker 4.
  • the cam of twelve 3 has hollow parts and solid parts (or not hollow), each of them corresponding to a month of the common year.
  • the hollow parts of the cam of twelve 3 are all located at the same distance from its axis of rotation A2 (virtual or imaginary) and therefore all have the same depth.
  • the solid parts are also all located at the same distance from the axis of rotation A2.
  • the cam of twelve 3 rotates at the end of each month by a twelfth of a turn.
  • the feeler 4a is located at a given position which determines the rest position of the rocker 4. This position determines the amplitude of the pawl 4b of the rocker 4 acting on the internal teeth of the rocker. the display crown 2.
  • the twelve cam 3 is coaxial and rotatably secured to a twelve star 16 comprising twelve teeth.
  • This star 16 rotates around the axis A2 of a not per month. It is typically positioned by a jumper 17 of which only a part is visible in the figures.
  • the finger 6 is coaxial with the twenty-four hour wheel 5 and pivots around the axis of rotation A1 of this wheel 5 at a speed of one revolution per twenty-four hours in the counterclockwise direction.
  • the twenty-four hour wheel 5 performs one revolution per day. For this, it typically meshes with the hours wheel 18 of the timing gear of the watch movement in which the date mechanism 1 is integrated.
  • a pin 15 fixed on the twenty-four hour wheel 5 allows the finger 6 to be driven in rotation at a speed of one revolution per twenty-four hours in the counterclockwise direction. It is the normal direction of rotation of the hour wheel 18 (here clockwise) which defines the direction of rotation of the wheel 5 and therefore of the finger 6.
  • the pin 15 could be replaced by an element, such as 'a lug, retractable.
  • said element would only allow the finger 6 to be driven when the twenty-four hour wheel 5 rotates counterclockwise. This would make it possible to protect the mechanism, for example when setting the time which would consist of backing the time.
  • tooth X / Y the tooth of display crown 2 located between indications 7 with the numbers X and Y.
  • this first special tooth 15/16 comprising a first 13a and a second 13b small teeth which correspond to a tooth classic split in two. Together, these teeth 13a, 13b occupy a width "l", identical to the width of a conventional tooth.
  • These small teeth 13a, 13b play a particular role for the passage of dates at the end of the month depending on whether or not the current month is a month of thirty-one days, as explained below.
  • the figures 2a to 2d illustrate the mechanism 1 in successive states, during the passage from the twenty-eight date to the twenty-nine date of the month of March.
  • the figure 2a illustrates mechanism 1, on March 28 at the end of the day.
  • the rocker 4 at rest, its feeler 4a being held in support by the rocker spring 9 against a non-hollowed part of the cam of twelve 3.
  • the pawl 4b is in turn resting on a tooth 13/14 of the internal teeth of the date display crown 2.
  • the end 4b 'of the pawl 4b abuts against the tooth 12/13 of the date display crown 2 in order to lift it. Initially, the pawl 4b pivots counterclockwise until this pivoting is blocked by a stop 12 fixed on the rocker 4.
  • the torque necessary to drive the rotation of the display crown 2 is typically defined by the positioning device 10.
  • the positioning device 10 of the display crown 2 is rotated under the effect of this rotation. Even if the extreme position of the rocker 4 is not sufficient for the pawl 4b to cause the display crown 2 to rotate one full step, the positioning device 10 allows the repositioning of the display crown to be repositioned. date 2. It helps the latter to complete the rotation of a step that it has started, as illustrated in figure 2c .
  • the figure 3 illustrates mechanism 1 on April 1 at the start of the day.
  • the rocker 4 at rest, its feeler 4a being held in support by the rocker spring 9 against a recessed part of the cam of twelve 3.
  • the pawl 4b bears against a tooth of the internal toothing of the date display crown 2, typically in the middle of the width of this tooth, as illustrated in figure 3 and not against the side of that tooth.
  • the steps are identical for each standard jump of a month of less than thirty-one days, that is to say for each passage of a date of a month of less than thirty-one days except for the passage from the thirtieth day of that month to the first day of the following month.
  • mechanism 1 when changing from date thirty to date thirty-one of a month and then from date thirty-one of that month to the first date of the following month during months of thirty-one days is described in more detail below with reference to figures 4a to 4g .
  • the figure 4a illustrates mechanism 1 on March 30, at the end of the day.
  • the feeler 4a of the rocker 4 is resting against a solid part of the cam twelve 3 indicating that it is a thirty-one day month.
  • the pawl 4b is held, by the spring 11, resting against the first 13a of the two small teeth 13a, 13b facing it.
  • the rocker 4 is actuated by the finger 6 of the twenty-four hour wheel 5, it pivots and its pawl 4b drives the display crown 2 in clockwise rotation by acting on the tooth 14/15 of date crown 2. This is illustrated in figures 4b and 4c .
  • the stopper 12 prevents the pawl 4b from retracting by pivoting counterclockwise when lifting the lever 4 ( figure 4b ).
  • the figure 4d illustrates mechanism 1 several hours later, on March 31, at the end of the day.
  • the position of the cam of twelve 3 has not changed.
  • the rocker 4 is in the rest position, with its feeler 4a resting against an uncut part of the cam of twelve 3.
  • the finger 6 again raises the rocker 4 and its pawl 4b comes drive display crown 2 in clockwise rotation by acting this time on the small lower tooth 13b of the date crown 2 between the indications fifteen and sixteen. This is illustrated in figures 4e and 4f .
  • the figure 5a illustrates mechanism 1 on April 30 at the end of the day.
  • the feeler 4a of the rocker 4 rests against a hollowed out part of the twelve cam 3 indicating that it is a month less than thirty-one days.
  • the end 4b 'of the pawl 4b is held, by the pawl spring 11, resting against the second 13b of the two small teeth facing it, that is to say between the two small teeth 13a, 13b.
  • the rocker 4 is actuated by the finger 6 of the twenty-four hour wheel 5, it pivots and its pawl 4b drives the display crown 2 in clockwise rotation by acting on the first small tooth 13a of date crown 2. This is illustrated on figure 5b .
  • the stop 12 prevents the end 4b 'of the pawl 4b from retracting during the lifting of the lever 4. It keeps the end 4b' of the pawl 4b in the path of the first small tooth 13a and therefore participates in the 'drive the display crown 2 in rotation.
  • the second special tooth 14 of the display crown 2 caused the star to rotate by one step. of twelve 16 and therefore the positioning of the cam of twelve 3 in a position corresponding to the following month, the month of May, which is a month of thirty-one days.
  • the rotation of the star of twelve 16 is illustrated in particular in figures 5d and 5th .
  • the date mechanism 1 allows the correct passage of the date display at the end of the month whether the month is a month of thirty days or a month of thirty-one days.
  • the thirty-day months, on the night of the thirtieth to the first, the thirtieth of the month is followed by the first without manual intervention.
  • the date mechanism 1 has the advantage of comprising a display crown of which only the internal teeth, located on a single level, allow it to be set in rotation. It therefore takes up less space than date mechanisms of this type according to the prior art. In addition, it also has the advantage of requiring only a single pawl for actuating the date display crown 2.
  • the month cam 3 comprises twelve angular portions with hollow and non-hollow parts corresponding respectively to months of less than thirty-one days and to months of thirty-one days and is associated with a star of twelve 16 with twelve teeth. It is clear that the cam of the months could take different forms as long as its function is not impaired. It could in particular comprise a number of angular portions which is a multiple of twelve and be associated with a star comprising a number of teeth corresponding to this number of angular portions. The mechanism could also be adjusted so that the valleys correspond to months of thirty-one days and the flat parts to months of less than thirty-one days.
  • the date mechanism 1 illustrated in figures 1 to 5f is an annual calendar mechanism and behaves in February as if it had thirty days.
  • the mechanism could be modified so that it behaves in February as if it had thirty-one days.
  • a person skilled in the art could easily adapt it, in particular by adding a leap year cam, to make it a perpetual calendar.
  • the date mechanism according to the invention is typically fixed to a frame such as a plate or a bridge of a watch movement.
  • the date mechanism according to the invention can also have its own frame, typically an additional plate, which can be made integral with the frame of said watch movement.
  • date mechanism 1 can be adapted so that the so-called “special” teeth are positioned elsewhere on the watch. internal toothing of the date display crown 2. In addition, their shape can also be changed as long as their function is retained.
  • the two teeth 13a, 13b of the first special tooth 13 of width "l” could not have the same width so that the recess separating them would not be located in the middle of the width "l” of the first special tooth. 13 but at a distance corresponding to x% of "l” with respect to one end of this tooth 13, the position of this end being considered with respect to a predetermined direction of rotation.
  • the mechanism 1 would then be adapted so that, during the days one to twenty-nine of the months of less than thirty-one days, the end 4b 'of the pawl 4b is positioned resting against a tooth of the internal teeth of the display crown 2, at the same distance of x% of “l” from the end of this tooth considered with respect to the same predetermined direction of rotation.
  • the positioning device 10 illustrated in figures 1 to 5f is a device comprising a jumper 10a associated with a mobile, said mobile comprising a star with five teeth 10b and a wheel with wide teeth 10c.
  • the width of the teeth of said wide-toothed wheel 10c typically corresponds to the distance separating two teeth of the internal teeth of the date crown 2.
  • the five-tooth star is positioned by a “conventional” jumper 10a fixed on the plate 100. and the wide toothed wheel 10c cooperates with the teeth of the display crown 2.
  • Such a positioning device 10 could be replaced by a conventional jumper (such as the jumper 10a).
  • the pawl 4b could have come integrally with the rocker 4 while remaining movable in rotation with respect to this rocker 4.
  • the twenty-four hour wheel 5 could be driven in rotation other than via the hours wheel 18 of the timer train of the watch movement in which the mechanism 1 is integrated.
  • the positioning device 10 participates in the rotation of the display crown 2, the rocker not needing to cause by itself the displacement of a complete step of the crown d. 'display 2. This is intended to limit the energy consumption necessary to raise the latch 4. However, it is very well conceivable to design the date mechanism according to the invention so that the latch 4 can, on its own , using its pawl 4b, cause the display ring 2 to rotate one full step.

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

Claims (15)

  1. Datumsmechanismus (1), der eine Anzeigekrone (2) mit Innenverzahnung, die Datumsangaben (7) trägt, die von eins bis einunddreißig gehen und dazu bestimmt sind, nacheinander gezeigt zu werden, um das Datum des Monats anzugeben, wobei ein Zahn der Innenverzahnung der Anzeigekrone (2) mit einem Antriebsorgan (13) ersetzt ist, dessen Form sich von derjenigen der Zähne der Verzahnung unterscheidet, eine Monatskurvenscheibe (3), deren Winkelposition die Anzahl der Tage im laufenden Monat angibt, und eine Wippe (4) umfasst, die einen Taster (4a) und einen Sperrkegel (4b) umfasst, wobei die Wippe (4) dazu bestimmt ist, drehbar von einer Position, in der ihr Taster (4a) gegen die Monatskurvenscheibe (3) in Auflage ist, wobei diese Position von der Anzahl der Tage in dem Monat abhängt, hin zu einer vorbestimmten Position angetrieben zu werden, wobei das Ganze derart gestaltet ist, dass:
    - unabhängig von der Anzahl der Tage des laufenden Monats, wenn das Datum des Monats zwischen dem Ersten und einschließlich dem Neunundzwanzigsten liegt, bei jeder Drehung der Wippe (4) von der Position, in der ihr Taster (4a) gegen die Monatskurvenscheibe (3) in Auflage ist, hin zu der vorbestimmten Position, der Sperrkegel (4b) mit einem Zahn der Innenverzahnung der Anzeigekrone (2) zusammenwirkt, um die Drehung der Anzeigekrone (2) um einen Schritt anzutreiben, wobei die Angabe des gezeigten Datums (7) somit um eine Einheit erhöht wird;
    - wenn das Datum des Monats gleich dem Dreißigsten ist:
    ∘ wenn der laufende Monat ein Monat mit dreißig Tagen ist, der Sperrkegel (4b) unter der Wirkung der Drehung der Wippe (4) von der Position, in der ihr Taster (4a) gegen die Monatskurvenscheibe (3) in Auflage ist, mit einem ersten Teil (13a) des Antriebsorgans (13) zusammenwirkt, um die Drehung der Anzeigekrone (2) um einen ersten Schritt anzutreiben, dann mit einem Zahn der Innenverzahnung der Anzeigekrone (2) zusammenwirkt, der dem Antriebsorgan (13) benachbart ist, um die Anzeigekrone (2) um einen zweiten Schritt anzutreiben, wobei die gezeigte Datumsangabe (7) somit nacheinander vom Dreißigsten zum Einunddreißigsten und dann vom Einunddreißigsten zum Ersten übergeht; und
    ∘ wenn der laufende Monat ein Monat mit einunddreißig Tagen ist, der Sperrkegel (4b) unter der Wirkung der Drehung der Wippe (4) von der Position, in der ihr Taster (4a) gegen die Monatskurvenscheibe (3) in Auflage ist, hin zu ihrer vorbestimmten Position mit einem Zahn der Innenverzahnung der Anzeigekrone (2) zusammenwirkt, der dem Antriebsorgan (13) benachbart ist, um die Drehung der Anzeigekrone (2) um einen Schritt anzutreiben, wobei die Angabe des gezeigten Datums (7) somit vom Dreißigsten zum Einunddreißigsten übergeht.
    - wenn das Datum des Monats gleich dem Einunddreißigsten ist, der Sperrkegel (4b) unter der Wirkung der Drehung der Wippe (4) von der Position, in der ihr Taster (4a) gegen die Monatskurvenscheibe (3) in Auflage ist, hin zu ihrer vorbestimmten Position, mit einem zweiten Teil (13b) des Antriebsorgans (13) zusammenwirkt, um die Drehung der Anzeigekrone (2) um einen Schritt anzutreiben, wobei die gezeigte Datumsangabe (7) somit vom Einunddreißigsten zum Ersten übergeht.
  2. Datumsmechanismus (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Anzeigekrone (2) einer Krone entspricht, die einunddreißig Zähne umfasst, die gleichmäßig auf ihrem inneren Umriss verteilt sind, wobei einer davon mit dem Antriebsorgan (13) ersetzt wurde.
  3. Datumsmechanismus (1) nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass die gezeigte Angabe zum Angeben des Datums des Monats mittels eines Fensterchens (8), einer Markierung, wie beispielsweise einem Zeiger, oder eines Motivs und/oder eines Indikators gezeigt wird, wie beispielsweise einer Facette, durch die oder auf der der Benutzer die gezeigte Angabe lesen kann.
  4. Datumsmechanismus (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Antriebsorgan (13) die Form eines ersten Spezialzahns (13) mit der gleichen Breite "l" wie derjenigen der anderen Zähne der Innenverzahnung der Anzeigekrone (2) annimmt, wobei der Spezialzahn (13) eine Vertiefung in einer Zone seiner Breite, typischerweise in der Mitte seiner Breite, umfasst, derart, dass ein erster (13a) und ein zweiter (13b) Zahn definiert werden, die von der Vertiefung getrennt sind, wobei der Mechanismus (1) derart gestaltet ist, dass am Dreißigsten des Monats, wenn der Taster (4a) gegen die Monatskurvenscheibe (3) in Auflage ist:
    - wenn der laufende Monat ein Monat mit dreißig Tagen ist, der Sperrkegel (4b) sich zwischen den zwei Zähnen (13a, 13b) des Spezialzahns (13) befindet; und
    - wenn der laufende Monat ein Monat mit einunddreißig Tagen ist, der Sperrkegel (4b) sich gegen den ersten (13a) der zwei Zähne (13a, 13b) des Spezialzahns (13) außerhalb der Vertiefung in Auflage befindet.
  5. Datumsmechanismus (1) nach Anspruch 4, dadurch gekennzeichnet, dass er derart gestaltet ist, dass, wenn das Datum des Monats zwischen dem Ersten und einschließlich dem Neunundzwanzigsten liegt, in der Position, in der der Taster (4a) der Wippe (4) gegen die Monatskurvenscheibe (3) in Auflage ist:
    ∘ wenn der laufende Monat ein Monat mit dreißig Tagen ist, der Sperrkegel (4b) sich gegen einen Zahn der Innenverzahnung der Anzeigekrone (2) in einer Zone seiner Breite "l" in Auflage befindet, die der Zone mit der Breite "l" des Spezialzahns (13) entspricht, der die Vertiefung umfasst, derart, dass, wenn der Zahn mit dem Spezialzahn (13) ersetzt würde, der Sperrkegel (4b) sich in der Vertiefung des Spezialzahns (13) befände; und
    ∘ wenn der laufende Monat ein Monat mit einunddreißig Tagen ist, der Sperrkegel (4b) sich gegen einen Zahn der Innenverzahnung der Anzeigekrone (2) in Auflage befindet.
  6. Datumsmechanismus (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Monatskurvenscheibe (3) koaxial und drehfest mit einem Stern (16) ist, wobei der Stern (16) bei jeder Drehung der Anzeigekrone (2) drehbar zwischen der Position, in der die Angabe des Datums des Einunddreißigsten gezeigt wird, und der Position angetrieben wird, in der die Angabe des Datums des Ersten gezeigt wird.
  7. Datumsmechanismus (1) nach Anspruch 6, dadurch gekennzeichnet, dass ein anderer Zahn der Innenverzahnung der Anzeigekrone (2) als der mit dem ersten Spezialzahn (13) ersetzte mit einem zweiten Spezialzahn ersetzt ist, dessen Form bei jedem Übergang des Datums des Einunddreißigsten eines Monats zum Datum des Ersten des folgenden Monats das drehbare Antreiben des Sterns (16) um einen Schritt ermöglicht.
  8. Datumsmechanismus (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine erste und eine unterschiedliche zweite Position der Wippe (4) vorhanden sind, in denen ihr Taster (4a) gegen die Monatskurvenscheibe (3) in Auflage ist, wobei diese erste und diese zweite Position den Monaten mit dreißig beziehungsweise einunddreißig Tagen entspricht.
  9. Datumsmechanismus (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Wippe (4) durch einen Finger (6) drehbar angetrieben wird, der mit einer Drehzahl von einer Umdrehung pro vierundzwanzig Stunden um eine Drehachse (A1) schwenkt, die sich von derjenigen (O) der Wippe (4) unterscheidet.
  10. Datumsmechanismus (1) nach Anspruch 9, dadurch gekennzeichnet, dass der Finger (6) durch ein Element (15) drehbar angetrieben wird, das von einem Zahnrad (5) getragen wird, wobei das Zahnrad (5) derart kinematisch mit dem Zeigerwerk-Räderwerk, zum Beispiel mit dem Stundenrad (18), eines Uhrwerks verbunden ist, dass es sich mit einer Drehzahl von einer Umdrehung pro vierundzwanzig Stunden in einem vorbestimmten Sinn um die Achse (A1) dreht.
  11. Datumsmechanismus (1) nach Anspruch 10, dadurch gekennzeichnet, dass das Element (15) derart wegklappbar ist, dass der Finger (6) nur durch das Element (15) drehbar angetrieben wird, wenn das Zahnrad (5) sich im vorbestimmten Sinn dreht.
  12. Datumsmechanismus (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er ferner eine Positionierungsvorrichtung (10) umfasst, die eine Hebelfeder (10a) umfasst, die das Positionieren der Anzeigekrone (2) ermöglicht.
  13. Datumsmechanismus (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Monatskurvenscheibe eine Kurvenscheibe ist, die eine Anzahl von Winkelsektoren umfasst, die ein Vielfaches von zwölf ist, wobei diese Winkelsektoren Reihen von nicht vertieften Teilen und vertieften Teilen mit den gleichen Tiefen umfassen, die den Monaten mit einunddreißig Tagen beziehungsweise den Monaten mit weniger als einunddreißig Tagen oder umgekehrt entsprechen.
  14. Modul für Uhren, dadurch gekennzeichnet, dass es einen Datumsmechanismus nach einem der Ansprüche 1 bis 13 und ein Gestell, wie beispielsweise eine Platte, umfasst, auf dem der Mechanismus befestigt ist.
  15. Uhr, wie beispielsweise eine Taschenuhr oder eine Armbanduhr, dadurch gekennzeichnet, dass sie einen Datumsmechanismus (1) nach einem der Ansprüche 1 bis 13 oder ein Modul nach Anspruch 14 umfasst.
EP18201841.6A 2018-10-22 2018-10-22 Datumsmechanismus Active EP3644130B1 (de)

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EP4383015A1 (de) * 2022-12-09 2024-06-12 Patek Philippe SA Genève Uhrvorrichtung zur umwandlung einer ersten drehbewegung in eine zweite drehbewegung, mindestens teilweise gegabeltes teil

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EP1596261B1 (de) 2004-05-14 2007-08-01 Rolex S.A. Jährlicher Kalendermechanismus für Uhrwerk
EP1666991B1 (de) 2004-12-02 2011-06-01 ETA SA Manufacture Horlogère Suisse Jährlicher Kalendermechanismus für eine Uhr
JP6788345B2 (ja) * 2015-01-12 2020-11-25 ロレックス・ソシエテ・アノニムＲｏｌｅｘ Ｓａ 時計カレンダー機構のモバイルを駆動する装置

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