EP3408712B1 - Datumsmechanismus - Google Patents

Datumsmechanismus Download PDF

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Publication number
EP3408712B1
EP3408712B1 EP17701749.8A EP17701749A EP3408712B1 EP 3408712 B1 EP3408712 B1 EP 3408712B1 EP 17701749 A EP17701749 A EP 17701749A EP 3408712 B1 EP3408712 B1 EP 3408712B1
Authority
EP
European Patent Office
Prior art keywords
date
wheel
actuator
driving wheel
eccentric
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
EP17701749.8A
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English (en)
French (fr)
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EP3408712A1 (de
Inventor
Marc Lemonnier
José FERNANDEZ SAMPEDRO
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.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
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.)
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Publication date
Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Publication of EP3408712A1 publication Critical patent/EP3408712A1/de
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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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/006—Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices)
    • G04B11/008—Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices) with friction members, e.g. click springs or jumper
    • 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
    • G04B19/241—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars the date is indicated by one or more hands

Definitions

  • the present invention relates to a date mechanism as well as a timepiece provided with such a mechanism.
  • the date mechanisms are a well-known complication in the field of watchmaking.
  • a date mechanism is composed of a date driving wheel driven by the hour wheel of a clockwork movement.
  • the date driving wheel carries a finger or date actuator which cooperates with a date wheel (star, crown, etc.) for the indication of the date.
  • the date mechanism is sometimes accompanied by a date correction mechanism.
  • the finger or date actuator can also be arranged to be retractable in order to avoid breakage of the mechanism during a date correction by a dedicated mechanism or by setting the time back.
  • the purpose of the present invention is to provide a date mechanism intended to equip a timepiece whose operation is safe and which in particular makes it possible to guarantee the correct engagement of the finger or date actuator with the date wheel when changing the date and preferably to retract the finger or date actuator during a manual correction of the date or when setting the time behind the movement of the timepiece.
  • the present invention also relates to a timepiece provided with a date mechanism as above.
  • the date mechanism according to the invention is intended to equip a movement with a timepiece.
  • the date mechanism comprises a date driving wheel 1 engaged with the movement of the timepiece (via the hour wheel for example) as well as a date actuator 2 arranged to cooperate with a date wheel 3.
  • the date wheel 3 carries a date indicator (not shown) which is preferably a date hand.
  • the date driving wheel 1 is preferably arranged to perform one revolution per day and carries an eccentric 4 having the shape of a stud secured to said driving wheel 1.
  • the eccentric 4 passes through a first oblong hole 5 of the date actuator 2.
  • Said date actuator 2 according to the first embodiment also comprises a second oblong hole 6 which is crossed by a fixed pin 7 secured to a fixed part of the movement of the workpiece d watchmaking (the timer bridge for example).
  • the first and second oblong holes 5, 6 are essentially perpendicular to each other.
  • the date actuator 2 is arranged to move both in translation and in rotation relative to the eccentric 4 of the date driving wheel 1 and to the fixed pin 7.
  • the date actuator 2 comprises a date finger 8 intended to cooperate with a toothing 30 of the date wheel 3.
  • the date wheel 3 is a date star whose toothing 30 comprises sixty-two teeth.
  • the date actuator 2 is subjected to the action of an elastic force which tends to push it into a position in which it is in abutment against the eccentric 4.
  • the elastic force consists of a spring 9, a first end 9a of which is fixed to a fixed part of the movement of the workpiece timepiece (the timer bridge for example) while the second free end 9b is in abutment against a protuberance 20 of the date actuator 2.
  • the date mechanism according to the invention also comprises a date jumper 10 subjected to the action of a jumper spring 11 fixed at one of these ends on a fixed part of the movement of the timepiece (the bridge timer for example).
  • the date jumper 10 and its jumper spring 11 are arranged to cooperate with the teeth 30 of the date wheel 3 and thus ensure the angular position of said date wheel 3.
  • the date actuator 2 and its finger 8 are entirely disengaged from the teeth 30 of the date wheel 3 ( see figure 1 ). Also in this phase, the date actuator 2 is held in abutment against the eccentric 4 by its spring 9. More specifically, a first end of the first oblong hole 5 of the date actuator 2 is in abutment against the eccentric 4.
  • the date driving wheel 1 pivots driven by the movement of the timepiece and in turn drives the date actuator 2 thanks to the eccentric 4 against which it is held by the spring 9.
  • Said date actuator 2 can pivot and slide relative to the fixed pin 7 thanks to its second oblong hole 6.
  • the figure 2 illustrates the movement of said date actuator 2 which has been placed in the path of the toothing 30 of the date wheel 3 (situation at 6.30 pm).
  • the figure 3 illustrates the date mechanism according to the first embodiment while the finger 8 of the date actuator 2 comes into contact with a tooth of the teeth 30 of the date wheel 3. From this position, the driving wheel date 1 continues to rotate and drives with it the date actuator 2, which in turn drives the date wheel 3. Under the action of the date actuator 2 driven by the date driving wheel 1, the jumper 10 rises and the date indicator 3 can rotate one step.
  • the arrangement of the date actuator 2 according to the first embodiment with its two oblong holes 5, 6, of the eccentric 4 and of the fixed pin 7 makes it possible to adjust the penetration of the finger 8 of the actuator of date 2 in the teeth 30 to have maximum penetration of the finger 8 in the teeth 30 of the date wheel 3 when the date changes.
  • the contact between the finger 8 of the date actuator 2 and the teeth 30 of the date wheel 3 is optimal and safe ( figure 4 ).
  • the date actuator 2 drives the date wheel 3 until the jumper 10 falls back into the teeth 30 of the date wheel 3 under the action of its jumper spring 11 and reposition the date wheel 3 as illustrated to the figure 5 .
  • the date has changed.
  • the finger 8 of the date actuator 2 is always in the path of the toothing 30 of the date wheel 3 and said date actuator 2 is always in abutment against the eccentric 4.
  • the date driving wheel 1 continues to drive the date actuator 2 which pivots and slides relative to the fixed pin 7 until it finds a completely free position of the teeth 30 of the date wheel. 3 as illustrated on the figure 1 .
  • the date actuator 2 comprises a slot 6 'intended to receive the fixed pin 7.
  • this slot could be an oblong hole as in the first embodiment.
  • the eccentric 4 secured to the date driving wheel 1 passes through a bore of the date actuator 2.
  • the date actuator 2 is arranged to move both in translation and in rotation relative to the fixed pin 7, but only in rotation relative to the eccentric 4.
  • the date actuator 2 comprises a date finger 8 ', which is elastic and intended to cooperate with the teeth 30' of the date wheel 3.
  • the teeth 30 'of the date wheel 3 is a sawtooth toothing and comprises sixty-two teeth.
  • the date driving wheel 1 pivots driven by the movement of the timepiece and in turn drives the date actuator 2 thanks to the eccentric 4.
  • Said date actuator 2 can pivot and slide with respect to the fixed pin 7 thanks to its 6 'notch.
  • the figure 7 illustrates the movement of said date actuator 2 which has been placed in the path of the teeth 30 ′ of the date wheel 3 (situation at 6.30 pm).
  • the figure 8 illustrates the date mechanism according to the second embodiment while the finger 8 'of the date actuator 2 comes into contact with a tooth of the teeth 30' of the date wheel 3. From this position, the date driving wheel 1 continues to pivot and drives with it the date actuator 2.
  • the elastic finger 8 'and its active end are in particular shaped to cooperate with the teeth 30' and in this position, drive the date 3.
  • the elastic finger 8 ′ then works in buckling: subjected to a normal compression force by the teeth 30 ′, it will bend and deform in a direction perpendicular to the compression axis.
  • the elastic finger 8 ' is arranged so that during this work in buckling, it can maintain its position in abutment against the teeth 30' and rotate the date wheel 3 by one step against the action of the jumper 10 which is raised so ( figure 9 ).
  • the date has changed. In this position, the finger 8 'of the date actuator 2 is always in the path of the teeth 30' of the date wheel 3.
  • the date driving wheel 1 continues to drive the date actuator 2 which pivots driven by the eccentric 4 and slides relative to the fixed pin 7 until it finds a position completely free from the toothing 30 'from the date wheel 3.
  • the date actuator 2 of the date mechanism according to the invention is arranged to be retractable in the event of manual correction of the date or in the event of setting the time behind the movement of the timepiece . That is to say, it is arranged so as not to drive the date driving wheel 1 when the date wheel 3 is pivoted by an auxiliary mechanism such as a date correction mechanism and so as not to drive the date wheel 3 when the date driving wheel 1 is pivoted in a direction which corresponds to setting the time back.
  • the Figures 6a to 6c illustrate this retraction for the mechanism of date according to the first embodiment, while the Figures 11a and 11b relate to the second embodiment.
  • the date mechanism according to the invention can therefore be provided with a date correction mechanism allowing the user to manually correct the date by advancing it by one day (at the end of the month for example).
  • the figure 6a illustrates this particular case for the first embodiment in which the user corrects the date by advancing it by one day immediately after the date change.
  • the user activates the correction mechanism (well known and not illustrated) which advances the date wheel 3 by one step.
  • the jumper 10 is raised to allow the rotation of the date wheel 3 and the latter drives the date actuator 2 by its finger 8 which is still in the path of the teeth 30 of the date wheel 3 (see figure 5 ).
  • the date actuator 2 also moves by relative to the eccentric 4 in a position in which it is no longer in abutment against the said eccentric 4. The pivoting of the date actuator 2 driven by the date wheel 3 has thus not had an effect on the driving wheel 1 or the rest of the movement of the timepiece.
  • the jumper 10 falls back into the teeth 30 of the date wheel 3 to reposition it.
  • the finger 8 of the date actuator 2 is in abutment against the teeth 30 of the date wheel 3, constrained by its spring 9.
  • This position of the date mechanism according to the first form d execution after correction is illustrated in figure 6b . This position is stable because the force exerted by the jumper spring 11 on the jumper 10 is greater than the force exerted by the spring 9 on the date actuator 2.
  • the finger 8 of the date actuator 2 is still in the path of the teeth 30 of the date wheel 3.
  • the date wheel 3 will again drive the date actuator 2.
  • the first oblong hole 5 is arranged to allow the date actuator 2 to move more in relation to the eccentric 4 in order to avoid breaking the mechanism.
  • the date wheel 3 is pivoted by the correction mechanism, it drives the date actuator 2 which pivots around the fixed pin 7 and slides relative to the eccentric 4 The date actuator 2 is again retracted without driving the date driving wheel 1.
  • the date mechanism according to the first embodiment is now in the position illustrated in the figure 6c .
  • the jumper 10 positions the wheel 3.
  • the finger 8 of the date actuator 2 is always in abutment against the teeth 30 of the date wheel 3 constrained by the spring 9.
  • this position is stable since the force of the jumper spring 11 is greater than the force of the spring 9 acting on the date actuator 2.
  • the date mechanism according to the first embodiment can continue its normal operation from this position.
  • the date actuator 2 In the event of a further manual date correction, the date actuator 2 according to the first embodiment still has the possibility of sliding relative to the eccentric 4 carried by the date driving wheel 1 before the second end of the first oblong hole 5 does not come into abutment against said eccentric 4. Thus, from the position illustrated in the figure 6c , a new correction of the date forward will cause a further retraction of the date actuator 2. Following this correction, the finger 8 of the date actuator 2 comes out of the teeth 30 of the date wheel 3. Thus released , the date actuator 2 is returned by the spring 9 to its position illustrated in the figure 1 resting against the eccentric 4. In this position, the date actuator 2 is again driven by the date driving wheel 1 in a normal manner.
  • the date actuator 2 is also retractable in case of setting the time of the movement of the timepiece back to avoid a correction of the date back.
  • the finger 8 of the date actuator 2 can come into contact with the teeth 30 of the date wheel 3 without driving it, even when the date driving wheel 1 continues to rotate in the direction of placing. on time back.
  • the date actuator 2 will remain in abutment against the teeth 30 of the date wheel 3 while the eccentric 4 will be able to move in the first oblong hole 5 of the date actuator 2 .
  • the elastic force exerted by the jumper spring 11 on the jumper 10 must be greater than the elastic force of the spring 9 exerted on the date actuator 2.
  • the user activates the correction mechanism which advances the date wheel 3 by one step.
  • the jumper 10 lifts to allow the rotation of the date wheel 3 and this drives the finger 8 'which is still in the path of the teeth 30' of the date wheel 3 (see figure 10 ).
  • the finger 8 ' being elastic, it will deform under the action of the date wheel 3 without driving the date driving wheel 1. This time, the elastic finger 8' is deformed in bending.
  • the serration 30 'in sawtooth further facilitates this retraction.
  • the date correction is therefore not passed on to the rest of the movement of the timepiece.
  • the jumper 10 falls back into the teeth 30 'of the date wheel 3 to reposition it.
  • the elastic finger 8 ′ of the date actuator 2 returns in the path of the toothing 30 ′ pressing against it.
  • This position of the date mechanism according to the second embodiment after the correction is illustrated in the figure 11b . This position is stable because the force exerted by the jumper spring 11 on the jumper 10 is greater than the bending force exerted by the elastic finger 8 'on the teeth 30' of the date wheel 3.
  • the finger 8 'of the date actuator 2 is still in the path of the teeth 30' of the date wheel 3.
  • the date wheel 3 will again drive the finger 8 'which is shaped to deform again under the action of the date wheel 3 without driving the date actuator 2 nor the date driving wheel 1.
  • the date wheel 3 is pivoted by the correction mechanism, the elastic finger 8 'is again retracted without driving the date driving wheel 1.
  • the jumper 10 positions the date wheel 3.
  • the finger 8 'of the date actuator 2 returns in the path of the teeth 30' of the date wheel 3 under its elastic action. As before, this position is stable since the force of the jumper spring 11 is greater than the bending force exerted by the elastic finger 8 'on the teeth 30'.
  • the date mechanism according to the second embodiment can continue its normal operation from this position.
  • the elastic finger 8 'of the date actuator 2 is also retractable in the event of setting the time of the movement of the timepiece backwards to avoid a correction of the date backwards.
  • the finger 8 'of the date actuator 2 can come into contact with the teeth 30' of the date wheel 3 without driving it, even when the date driving wheel 1 continues to rotate in the direction of update the hour back.
  • the elastic finger 8 ′ will also deform in bending when the date actuator 2 is driven by the date driving wheel 1 in the direction of setting the time backward.
  • the elastic finger 8 ' is arranged so that its force is greater than that of the jumper spring 11 when it works in compression or buckling while its bending force is more weaker than the force of said jumper spring 11.
  • a date mechanism is therefore produced, the date actuator of which is retractable in the same manner as a pawl.
  • the first embodiment also makes it possible to ensure particularly safe operation since the eccentric carried by the date driving wheel and the shape of the date actuator make it possible to adjust the penetration of the finger of the date actuator in the teeth of the date wheel and thus guarantee a safe and optimal gear between the two mobiles when the date changes.
  • the second embodiment has the advantage of simplicity and of avoiding the adjustment of an additional spring.

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

Claims (10)

  1. Datumsmechanismus, der ein Datum-Mitnehmerrad (1), ein Datum-Wirkglied (2), das dazu bestimmt ist, mit einem Datumsrad (3) zusammenwirken, um es um einen Schritt pro Tag vorgehen zu lassen, wobei das Datumsrad (3) der Wirkung einer Hebelfeder (10) unterliegt, um seine Winkelpositionen zu bestimmen, dadurch gekennzeichnet, dass der Datumsmechanismus ferner eine feste Welle (7) und einen Exzenter (4) umfasst, der durch das Datum-Mitnehmerrad (1) getragen wird; dadurch, dass das Datum-Wirkglied (2) gestaltet ist, um in Bezug auf die feste Welle (7) gleiten und sich in Bezug darauf drehen zu können; dadurch, dass der Exzenter (4) gestaltet ist, das Datum-Wirkglied (2) mitzunehmen; und dadurch, dass der Exzenter (4), die feste Welle (7) und das Datum-Wirkglied (2) in Bezug auf das Datum-Mitnehmerrad (1) gestaltet sind, damit:
    • das Datum-Wirkglied (2) das Datumsrad (3) um einen Schritt vorgehen lässt, wenn das Datum-Mitnehmerrad (1) sich in eine erste Richtung dreht, aber das Datumsrad (3) nicht zum Drehen bringt, wenn das Datum-Mitnehmerrad (1) sich in eine zweite Richtung dreht, die der ersten entgegengesetzt ist; und damit
    • das Datum-Wirkglied (2) gegen die Wirkung einer elastischen Kraft (9) in Bezug auf die feste Welle (7) gleiten und sich in Bezug darauf drehen oder sich unter der Wirkung des Datumsrads (3) elastisch verformen kann, ohne das Datum-Mitnehmerrad (1) mitzunehmen, wobei eine Drehung des Datumsrads (3) durch einen Hilfsmechanismus, wenn das Datum-Wirkglied (2) sich in dem Weg der Zahnung (30) des Datumsrades (3) befindet, somit nicht die Drehung des Datum-Mitnehmerrades (1) mitnimmt.
  2. Datumsmechanismus nach Anspruch 1, dadurch gekennzeichnet, dass das Datum-Wirkglied (2) einen Spalt (6') oder ein erstes Langloch (6) umfasst, das dazu bestimmt ist, die feste Welle (7) aufzunehmen.
  3. Datumsmechanismus nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Datum-Wirkglied (2) ein zweites Langloch (5) umfasst, das den Exzenter (4) des Datum-Mitnehmerrades (1) für das Gleiten und das Drehen des Datum-Wirkglieds (2) in Bezug auf den Exzenter (4) aufnimmt, wobei die elastische Kraft durch eine Feder (9) ausgeübt wird, die gestaltet ist, um das Datum-Wirkglied (2) gegen den Exzenter (4) in Auflage zu spannen.
  4. Datumsmechanismus nach Anspruch 3, dadurch gekennzeichnet, dass das Datum-Wirkglied (2) einen Finger (8) umfasst, der dazu bestimmt ist, mit der Zahnung (30) des Datumsrades (3) zusammenzuwirken, wobei der Exzenter (4), die feste Welle (7), die Feder (9) und das Datum-Wirkglied (2) in Bezug auf das Datum-Mitnehmerrad (1) gestaltet sind, damit das Eindringen des Fingers (8) in die Zahnung (30) maximal ist, wenn das Datum-Wirkglied (2) mit dem Datumsrad (3) zusammenwirkt, um es um einen Schritt vorgehen zu lassen.
  5. Datumsmechanismus nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das erste und das zweite Langloch (5, 6) senkrecht zueinander sind.
  6. Datumsmechanismus nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass die Kraft der Feder des Hebels (11) der Hebelfeder (10) des Datumsrades (3) größer als die Kraft der Feder (9) ist, die dazu neigt, das Datum-Wirkglied (2) mit dem Exzenter (4) in Kontakt zu halten.
  7. Mechanismus nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass das Datum-Wirkglied (2) eine Bohrung, die den Exzenter (4) aufnimmt, und einen elastischen Finger (8') umfasst, der dazu bestimmt ist, mit der Zahnung (30') des Datumsrades (3) zusammenzuwirken.
  8. Mechanismus nach Anspruch 7, dadurch gekennzeichnet, dass der elastische Finger (8') gestaltet ist, um zusammengedrückt oder geknickt zu werden, wenn er mit der Zahnung (30') des Datumsrades (3) zusammenwirkt, um es unter der Wirkung des Datum-Mitnehmerrades (1), das sich in die erste Richtung dreht, um einen Schritt vorgehen zu lassen, und um gebogen zu werden und das Datumsrad (3) nicht mitzunehmen, wenn das Datum-Mitnehmerrad (1) sich in die zweite Richtung dreht, und das Datum-Mitnehmerrad (1) nicht mitzunehmen, wenn das Datumsrad (3) sich unter der Wirkung eines Hilfsmechanismus dreht.
  9. Datumsmechanismus nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Datumsrad (3) ein Stern ist, dessen Zahnung (30; 30') einunddreißig oder zweiundsechzig Zähne umfasst.
  10. Uhr, dadurch gekennzeichnet, dass sie einen Datumsmechanismus nach einem der vorhergehenden Ansprüche umfasst.
EP17701749.8A 2016-01-25 2017-01-17 Datumsmechanismus Active EP3408712B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16152520 2016-01-25
PCT/IB2017/050238 WO2017130075A1 (fr) 2016-01-25 2017-01-17 Mécanisme de quantième

Publications (2)

Publication Number Publication Date
EP3408712A1 EP3408712A1 (de) 2018-12-05
EP3408712B1 true EP3408712B1 (de) 2020-03-04

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EP17701749.8A Active EP3408712B1 (de) 2016-01-25 2017-01-17 Datumsmechanismus

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EP (1) EP3408712B1 (de)
WO (1) WO2017130075A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019120272B3 (de) 2019-07-26 2020-06-18 Lange Uhren Gmbh Uhr mit einer ersten Anzeige und einer zweiten Anzeige

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH346170A (fr) * 1958-04-25 1960-04-30 Roamer Watch Co Sa Pièce d'horlogerie à quantième
DE1242512B (de) * 1964-08-25 1967-06-15 United States Time Corp Anzeigevorrichtung an einer Uhr zum Anzeigen einer Vielzahl von Kalenderinformationen
WO2006106787A1 (ja) * 2005-03-30 2006-10-12 Citizen Holdings Co., Ltd. 表示装置および時計のカレンダ装置
CH708338B1 (fr) * 2013-07-04 2018-06-15 Mft La Joux Perret Sa Mécanisme correcteur pas-à-pas.

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Title
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WO2017130075A1 (fr) 2017-08-03
EP3408712A1 (de) 2018-12-05

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