EP3460588B1 - Datumsmechanismus - Google Patents

Datumsmechanismus Download PDF

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Publication number
EP3460588B1
EP3460588B1 EP18195071.8A EP18195071A EP3460588B1 EP 3460588 B1 EP3460588 B1 EP 3460588B1 EP 18195071 A EP18195071 A EP 18195071A EP 3460588 B1 EP3460588 B1 EP 3460588B1
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EP
European Patent Office
Prior art keywords
wheel
date
cam
month
mechanism according
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Active
Application number
EP18195071.8A
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English (en)
French (fr)
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EP3460588A1 (de
Inventor
Philippe Vandel
Mathieu Barraud
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.)
Richemont International SA
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Richemont International SA
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Publication of EP3460588A1 publication Critical patent/EP3460588A1/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
    • 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

Definitions

  • the invention also relates to a timepiece comprising such a date mechanism.
  • the date mechanisms are among the most appreciated horological complications, because they provide particularly useful information.
  • the date in the particular field of mechanical watches, the date must generally be adjusted when a user puts on his watch after a certain period during which it has not been wound.
  • Certain constructions allow rapid correction, by acting directly on the date without acting on the time indication system.
  • it is not always possible or desirable to have such a rapid correction system because depending on the case, there is a risk of desynchronizing several displays.
  • the document CH 680 630 A3 discloses a date mechanism according to the preamble of claim 1.
  • the present invention aims to provide a new date mechanism, compact and reliable, allowing bidirectional correction and applicable to an annual calendar, a leap calendar or a perpetual calendar.
  • the invention relates to a date mechanism as proposed in the claims, as well as a timepiece comprising such a date mechanism.
  • the date mechanism can be arranged on an assembled module plate and kinematically connected to a basic movement, or if necessary, be integrated into a movement.
  • the mechanism notably comprises a date wheel 10 intended to provide information relating to the date.
  • This date wheel 10 can carry indications or a disc with the 31 numbers of the date or carry a needle intended to move opposite a graduation.
  • the date wheel 10 typically has 31 teeth and is intended to be driven at a rate of one step per day, around midnight, except for the last day of a month of less than 31 days where, as will be detailed below. afterwards, it is intended to be driven by at least one additional step.
  • the date wheel 10 is intended to be driven by a control wheel 12, which is driven by the watch movement.
  • the control wheel 12 comprises first of all a power take-off member, in the form of a star 12.0 intended, in the example illustrated, to be pushed one step per day by a 24-hour wheel of the movement, not shown.
  • a power take-off member in the form of a star 12.0 intended, in the example illustrated, to be pushed one step per day by a 24-hour wheel of the movement, not shown.
  • Other types of training are also possible, for example by a rocker.
  • the star 12.0 is mounted coaxially and integral in rotation with a first drive level 12.2 to drive the date wheel 10 by one step at the end of each day.
  • the first training level 12.2 also takes the form of a star.
  • the stars have the same number of branches and they are superimposed on each other, in order to favor the synchronization of the drive of the date wheel 10 with the time of the movement. In this case, the stars have 7 branches each.
  • star 12.0 has shorter branches than those of the star 12.2, so that it has no interaction with the date wheel 10, even if it is located in the same plane as the teeth of the date wheel 10.
  • the control wheel 12 also includes a second drive level 12.4 for driving the date wheel 10 by an additional step at the end of the last day of a month of 30 days, as well as a third drive level 12.6 to drive the date wheel 10 by three additional steps at the end of the last day of February, typically when it lasts 28 days.
  • the third level 12.6 has actuation zones 12.62 located on branches, which have a shape similar to a branch of the Maltese cross.
  • the second level 12.4 has actuation zones 12.42 interposed between the branches of the second level 12.4, advantageously in the shape of a U, opening to the outside, that is to say in the direction of the date wheel 10.
  • the actuation zones are symmetrical with respect to a radius of the control wheel 12, allowing operation in both directions of rotation, as will be understood below.
  • the spokes forming the axes of symmetry of the actuation zones 12.42 of the second level 12.4 are superimposed on the branches of the stars 12.0 and 12.2, while the rays forming the axes of symmetry of the actuation zones 12.62 of the third level 12.6 are superimposed on the bisectors angles formed by the rays of two branches of stars 12.0, 12.2 juxtaposed.
  • the second 12.4 and third 12.6 drive levels may have come in one piece, the actuation zones 12.62 of the third level 12.6 extending, in a separate plane, the actuation zones 12.42 of the second level 12.4.
  • the control wheel 12 thus has three separate drive levels 12.2, 12.4, 12.6, capable of cooperating with the date wheel 10, at determined times, as will appear below.
  • the annual cam 10.1 is arranged in a satellite manner on the date wheel 10. It is integral with a drive board 10.3, intended to be driven by cooperating with a fixed finger 14, located in the center of the date wheel 10, and around which the date wheel 10 pivots.
  • the drive board 10.3 typically has 12 teeth and advances by one step for each revolution made by the date wheel 10, that is to say each month.
  • the annual cam 10.1 has a profile defining portions of different radii, corresponding to the different months.
  • the radii of said portions are determined so as to angularly position, in a synchronized manner, the end-of-month jump mobile 10.0 in relation to the control wheel 12.
  • 12 portions are thus defined, one per month, it being understood that if two consecutive months have the same number of days (July-August and December-January), the two consecutive portions of the same radius are extended.
  • the 31-day months correspond to portions of the cam 10.1 having the largest radii
  • the 30-day months correspond to portions of the cam 10.1 having relatively small radii
  • the portion corresponding to the month of February has the smallest radius, forming a notch in the cam 10.1.
  • the probe 10.2 is held in contact with the profile of the cam 10.1.
  • the cam 10.1 to pivot in both directions and thus to have a bidirectional date drive, in particular in the case of correction, the variations of the cam radii are progressive.
  • the profile of the fixed finger 14 and that of the teeth of the drive board 10.3, are arranged so as to allow rotation of the board in both directions of rotation, depending on whether the date wheel rotates in the opposite direction. clockwise (with reference to the figure 8 , which is a bottom view), or clockwise (with reference to the figure 9 , which is also a bottom view).
  • the feeler 10.2 is carried by a rocker 11 further carrying a rack 10.4, engaged with a pinion 10.5 secured to an intermediate rake 10.6, which is engaged with a second sprocket 10.7, secured to the end of month jumping mobile 10.0 .
  • All the elements of the kinematic link between the probe 10.2 and the end of month jump mobile 10.0 are mounted on the date wheel 10. However, the detail of this kinematic link is given by way of example not limiting.
  • the date wheel 10 also carries a spring 13 (visible on the figures 1 , 3 and 5 ) arranged to apply a force to a finger 13.1 (visible on the Figures 7 and 8 ) carried by the rocker 11 to hold the probe 10.2 in abutment against the cam 10.1.
  • the end of month jump mobile 10.0 comprises two arms 10.01 and 10.02 , of different lengths.
  • a first arm 10.01, long, is arranged to cooperate with the second level 12.4 of the control wheel 12 at the end of the 30-day months, to cause the date wheel 10 to take an additional step ( Fig. 4 ).
  • a second arm 10.02, short, is arranged to cooperate with the third level 12.6 of the control wheel 12 at the end of the month of 28 days, to cause the date wheel 10 to take three additional steps.
  • the interaction between the second arm 10.02 and the third level 12.6 is visible on the figure 6 , but in the case of a correction, that is to say with the control wheel located upstream side, in the direction of rotation indicated by the arrow.
  • the end of month jump mobile 10.0 comprises only one arm, corresponding to the long arm 10.01 above, and the control wheel 12 includes only the first 12.2 and second 12.4 drive levels.
  • the month-end jumping mobile 10.0 has no arms in the travel of the control wheel 10.0, with the consequence that the date wheel 10, on the evening of the last day of the month, is driven in a single step by the first level 12.2 of the control wheel 12.
  • the long arm 10.01 is positioned in the travel of the control wheel 12, with the consequence that the date wheel 10, on the evening of the last day of the month, is driven by one step. the first level 12.2 of the control wheel 12, and an additional step by the second level 12.4 of the control wheel 12.
  • the month of February can be treated as a month of 30 or 31 days, the display of the calendar at the end of February having to be managed manually.
  • the date mechanism is adapted to provide a perpetual calendar, taking into account the months of February in leap years.
  • the annual cam 10.1 is associated with a leap cam 10.8 arranged to make a turn in 4 years and position every 4 years, at the level of the notch in February of the cam, a portion of larger radius.
  • the probe 10.2 is arranged to cooperate with the annual cam 10.1 and the leap cam 10.8, in order to cooperate with the latter when it takes position in the notch of February. It will be noted that over three-quarters of its perimeter, the leap cam 10.8 has a radius less than the February portion of the annual cam 10.1, so that the feeler 10.2 cooperates, in February in non-leap years, only with the annual cam 10.1.
  • the annual cam 10.1 is integral with a pinion 10.9, engaged with a first stage of a deflection mobile 10.10, which includes a second stage also engaged with a leap drive board 10.11, integral with the leap cam 10.8, the gear ratios being determined so that the leap cam 10.8 performs one revolution in 4 years.
  • the end-of-month jump mobile 10.0 comprises a third arm 10.03, of intermediate length between the long arm 10.01 and the short arm 10.02, arranged to be positioned in the travel of the control wheel 12, particularly of its third level 12.6, when the probe 10.2 is in contact with the leap cam 10.8.
  • the third arm 10.03 is angularly offset from the second arm 10.02, being located in the same plane.
  • the intermediate arm 10.03 is positioned in the travel of the control wheel 12, with the consequence that the date wheel 10, on the evening of the last day of the month, is driven by a step by the first level 12.2 of the control wheel 12, and two additional steps by the third level 12.6 of the control wheel 12.
  • the date mechanism may also include a locking system 10.12 of the end jump mobile of month 10.0.
  • This locking system 10.12 is designed to block the rotation of this mobile with reference to its axis, at least when said end-of-month jump mobile 10.0 cooperates with the control wheel 12.
  • the locking system 10.12 comprises a locking lever 10.13, positioned by a locking cam 16, fixedly mounted in the center of the date wheel 10 which pivots with reference to it.
  • the locking lever 10.13 comprises a feeler 10.15 held in contact with the locking cam 16, and a lug 10.14 able to cooperate with the end of month jump mobile 10.0 to block its rotation.
  • the lug 10.14 of the locking lever 10.13 falls into the teeth of the end of month jump mobile 10.0 , thus blocking its rotation on its axis, allowing energy to be transmitted between the control wheel 12 and the date wheel 10.
  • the invention also relates to a timepiece comprising a date mechanism as described above.
  • the date system according to the invention makes it possible to operate by rotating the control wheel both directions, either under the action of movement, or under the action of a corrector kinematically connected to the control wheel.
  • This corrector can act via the hour wheel, or be a rapid corrector, acting directly on the control wheel, typically the star 12.0 for example.

Claims (14)

  1. Datumsmechanismus, der enthält
    - ein Datumsrad (10), das dazu bestimmt ist, eine Information bezüglich des Datums zu liefern,
    - ein Steuerrad (12), das dazu bestimmt ist, von einem Uhrwerk angetrieben zu werden und das Datumsrad (10) um mindestens einen Schritt pro Tag anzutreiben,
    wobei das Steuerrad (12) enthält:
    - eine erste Antriebsebene (12.2), um das Datumsrad (10) am Ende jedes Tages um einen Schritt anzutreiben,
    - eine zweite Antriebsebene (12.4), um das Datumsrad (10) am Ende des letzten Tags eines Monats mit 30 Tagen um einen zusätzlichen Schritt anzutreiben,
    und wobei das Datumsrad (10) trägt:
    - ein Monatsendesprung-Drehteil (10.0), das dazu bestimmt ist, mit der zweiten Antriebsebene (12.4) des Steuerrads (12) zumindest am Ende der Monate mit 30 Tagen zusammenzuwirken, wobei das Monatsendesprung-Drehteil (10.0) satellitenartig auf das Datumsrad (10) montiert ist,
    dadurch gekennzeichnet, dass das Datumsrad (10) ebenfalls trägt:
    - eine Einheit aus einer Jahr-Kurvenscheibe (10.1) und einem Taster (10.2), wobei letzterer von einer Wippe (11) getragen wird und eingerichtet ist, um das Monatsendesprung-Drehteil (10.0) bezüglich seiner eigenen Drehachse auf dem Datumsrad (10) winkelmäßig zu positionieren.
  2. Datumsmechanismus nach Anspruch 1, dadurch gekennzeichnet, dass die Jahr-Kurvenscheibe (10.1) fest mit einer Antriebsplatte (10.3) verbunden ist, die dazu bestimmt ist, angetrieben zu werden, indem sie mit einem ortsfesten Finger (14) in der Mitte des Datumsrads (10) zusammenwirkt.
  3. Datumsmechanismus nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass die Jahr-Kurvenscheibe (10.1) ein Profil aufweist, das Abschnitte mit unterschiedlichen Radien definiert, wobei der Taster (10.2) mit dem Profil der Jahr-Kurvenscheibe (10.1) in Kontakt gehalten wird, wobei die Radien der Abschnitte so bestimmt werden, dass sie das Monatsendesprung-Drehteil (10.0) in Verbindung mit dem Steuerrad (12) synchron winkelmäßig positionieren.
  4. Datumsmechanismus nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Taster (10.2) fest mit einer Zahnstange (10.4) verbunden ist, die mit einem Trieb (10.5) in Eingriff steht, der fest mit einem Zwischenrechen (10.6) verbunden ist, der mit einem zweiten Trieb (10.7) in Eingriff steht, der fest mit dem Monatsendesprung-Drehteil (10.0) verbunden ist.
  5. Datumsmechanismus nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Steuerrad (12) eine dritte Antriebsebene (12.6) aufweist, um das Datumsrad (10) am Ende des letzten Tags eines Monats mit 28 Tagen um drei zusätzliche Schritte anzutreiben.
  6. Datumsmechanismus nach Anspruch 5, dadurch gekennzeichnet, dass das Monatsendesprung-Drehteil (10.0) mindestens zwei Arme (10.01, 10.02) unterschiedlicher Längen aufweist, die dazu bestimmt sind, mit der zweiten Antriebsebene (12.4) bzw. der dritten Antriebsebene (12.6) zusammenzuwirken.
  7. Datumsmechanismus nach einem der Ansprüche 5 und 6, dadurch gekennzeichnet, dass die dritte Antriebsebene (12.6) auf Schenkeln befindliche Betätigungszonen (12.62) aufweist, während die zweite Ebene (12.4) Betätigungszonen (12.42) aufweist, die zwischen die Schenkel der dritten Ebene (12.6) eingefügt sind, wobei die Betätigungszonen (12.42, 12.62) bezüglich eines Radius des Steuerrads (12) symmetrisch sind, was eine Betätigung des Monatsendesprung-Drehteils in beiden Drehrichtungen erlaubt.
  8. Datumsmechanismus nach Anspruch 7, dadurch gekennzeichnet, dass die Schenkel eine Form ähnlich einem Schenkel eines Malteserkreuzes aufweisen, und die Betätigungszonen (12.42) der zweiten Ebene (12.4) die Form eines sich nach außen öffnenden U haben.
  9. Datumsmechanismus nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass die Jahr-Kurvenscheibe (10.1) einer Schaltjahr-Kurvenscheibe (10.8) zugeordnet ist, der eingerichtet ist, um in 4 Jahren eine Drehung auszuführen und alle 4 Jahre im Bereich der Februar-Kerbe der Kurvenscheibe einen Kurvenscheibe-abschnitt mit größerem Radius als der Februar-Abschnitt der Jahr-Kurvenscheibe (10.1) zu positionieren,
    und dass der Taster (10.2) eingerichtet ist, um mit dem einen oder anderen der Jahr-Kurvenscheibe (10.1) und der Schaltjahr-Kurvenscheibe (10.8) zusammenzuwirken, je nachdem, ob die Schaltjahr-Kurvenscheibe (10.8) radial über die Jahr-Kurvenscheibe (10.1) vorsteht.
  10. Datumsmechanismus nach Anspruch 9, dadurch gekennzeichnet, dass die Jahr-Kurvenscheibe (10.1) fest mit einem Trieb (10.9) verbunden ist, der mit einer ersten Stufe eines Zeigerstellrad-Drehteils (10.10) in Eingriff steht, das eine zweite Stufe aufweist, die ebenfalls mit einer Schaltjahr-Antriebsplatte (10.11) in Eingriff steht, die fest mit der Schaltjahr-Kurvenscheibe (10.8) verbunden ist, wobei die Übersetzungsverhältnisse so bestimmt sind, dass die Schaltjahr-Kurvenscheibe (10.8) in 4 Jahren eine Umdrehung ausführt.
  11. Datumsmechanismus nach einem der Ansprüche 9 und 10, dadurch gekennzeichnet, dass das Monatsendesprung-Drehteil (10.0) drei Arme aufweist.
  12. Datumsmechanismus nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Datumsrad (10) außerdem ein Verriegelungssystem (10.12) des Monatsendesprung-Drehteils (10.0) trägt, das eingerichtet ist, um die Drehung des letzteren bezüglich seiner Achse zu blockieren, zumindest dann, wenn das Monatsendesprung-Drehteil (10.0) mit dem Steuerrad (12) zusammenwirkt.
  13. Datumsmechanismus nach Anspruch 12, dadurch gekennzeichnet, dass das Verriegelungssystem (10.12) eine Verriegelungswippe (10.13) aufweist, positioniert von einer Verriegelungskurvenscheibe (16), ortsfest in der Mitte des Datumsrads (10) montiert, das in Bezug auf ihn schwenkt, wobei die Verriegelungswippe (10.13) einen Zapfen (10.14) aufweist, der mit dem Monatsendesprung-Drehteil (10.0) zusammenwirken kann, um seine Drehung zu blockieren.
  14. Uhr, die einen Datumsmechanismus nach einem der vorhergehenden Ansprüche enthält.
EP18195071.8A 2017-09-20 2018-09-18 Datumsmechanismus Active EP3460588B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01156/17A CH714178A1 (fr) 2017-09-20 2017-09-20 Mécanisme de quantième annuel.

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EP3460588A1 EP3460588A1 (de) 2019-03-27
EP3460588B1 true EP3460588B1 (de) 2020-01-01

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CH (1) CH714178A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3832397B1 (de) * 2019-12-05 2023-09-06 Blancpain SA Uhr-anzeigemechanismus mit sofortigem umspringen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH481414A (fr) * 1966-12-22 1969-07-31 Certina Kurth Freres S A Pièce d'horlogerie à quantième
EP2490083B1 (de) * 2011-02-17 2013-10-16 Glashütter Uhrenbetrieb GmbH Programmrädchen eines Datumsmechanismus
CH708216B1 (fr) * 2013-06-04 2017-12-29 W Lea David Mécanisme de quantième annuel ou perpétuel pour une pièce d'horlogerie.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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CH714178A1 (fr) 2019-03-29

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