EP4113218A1 - Anzeigemechanismus kombiniert mit einer monddatums- und mondphasenanzeige für uhrwerk - Google Patents

Anzeigemechanismus kombiniert mit einer monddatums- und mondphasenanzeige für uhrwerk Download PDF

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Publication number
EP4113218A1
EP4113218A1 EP21183562.4A EP21183562A EP4113218A1 EP 4113218 A1 EP4113218 A1 EP 4113218A1 EP 21183562 A EP21183562 A EP 21183562A EP 4113218 A1 EP4113218 A1 EP 4113218A1
Authority
EP
European Patent Office
Prior art keywords
display
moon
wheel set
date
movement
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.)
Pending
Application number
EP21183562.4A
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English (en)
French (fr)
Inventor
Jean-Marc Wiederrecht
Laurent Wiederrecht
Maximilien Di Blasi
Guy Dubois-Ferriere
Guillaume LEWIS
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.)
Nogerah SA
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP21183562.4A priority Critical patent/EP4113218A1/de
Publication of EP4113218A1 publication Critical patent/EP4113218A1/de
Pending legal-status Critical Current

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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
    • G04B19/26—Clocks or watches with indicators for tides, for the phases of the moon, or the like
    • G04B19/268—Clocks or watches with indicators for tides, for the phases of the moon, or the like with indicators for the phases of the moon

Definitions

  • the present invention relates to a mechanism for displaying a lunar date, for a watch movement, comprising a date wheel bearing a display hand arranged to move opposite a scale indicating the lunar date, the date wheel being intended to be driven by a driving wheel of the watch movement in such a way that the display hand is capable of traversing the indicating scale in a maximum of thirty days.
  • timepieces with a calendar function include a watch movement whose operation is based on the Gregorian calendar which is a solar calendar
  • display mechanisms based on the lunar cycle for example the Hijri, Judaic, Chinese, Japanese or Korean, are also known in the prior art.
  • the expression “lunar calendar” will be used to designate all of the calendar systems used in different cultures or nations which are based on the cycles of the Moon.
  • the aforementioned timepiece has a display of the Hijri calendar arranged in a counter located at nine o'clock on the dial, as well as a mechanism for displaying the phases of the Moon arranged in a counter located at six o'clock.
  • the mechanism for displaying the phases of the Moon is conventional here, since it implements a disc bearing a representation of the Moon rotating behind the dial, to reveal a portion of the disc through an aperture whose the specific contour defines a mask making it possible to represent the different phases of the Moon according to its evolution during a lunar month.
  • the current mechanism for displaying the phases of the Moon comprises a fixed representation of the Moon opposite which moves a disc-shaped cover carried by the end of a needle driven in a complex movement.
  • the date display Gregorian
  • several variants are currently marketed: either the date is displayed by a central hand moving opposite a scale of graduations of 31 arranged on the periphery of the dial, or it is displayed by a date hand driven in such a way retrograde to move next to a scale of 31 graduations extending along a circular sector.
  • the Montblanc company markets a model named " Star Legacy Moonphase" (viewable here: https://www.montblanc.com/en-ch/wrist-watch_cod10163292706843707.html ) in which the date and moon phase displays (both conventional) are arranged coaxially.
  • the dimensions of the moon phase display are limited by the diameter of the dial, so that it does not encroach on the central hand, which gives rise to a scale indicating the date whose values have a reduced height and difficult to read.
  • the gain in display surface is made to the detriment of the thickness of the display mechanism due to the coaxiality of the two displays.
  • a main object of the present invention is therefore to propose a mechanism for displaying a lunar calendar combined with a display of the phases of the Moon of appearance and construction different from those of known display mechanisms and which is both precise and readable, compact and of simple construction.
  • the Hijri calendar being a lunar calendar
  • its months have a variable length, either twenty-nine days or thirty days, to take into account the actual duration of the lunar cycle or period synodic (about twenty-nine days, twelve hours and forty-four minutes).
  • the fact that a single and same display hand simultaneously indicates the lunar calendar and the phases of the Moon makes it possible to guarantee a display of the phases of the Moon, as a function of the lunar calendar displayed, which is permanently correct.
  • the present invention also relates to a watch movement comprising a driving wheel arranged to drive the date wheel of a display mechanism according to the above characteristics.
  • the drive wheel set can be arranged in such a way that the date wheel set exhibits a movement, once a day, such that the display hand traverses the indicator scale in a maximum of thirty days.
  • provision may be made for the driving wheel set to be a date disc.
  • the present invention also relates to a timepiece comprising a timepiece movement according to the above characteristics.
  • the figure 1 shows a simplified view of part of a timepiece 1 according to the present invention.
  • timepiece 1 The covering elements of the timepiece 1 are not shown for the sake of simplification and insofar as they do not play any particular role for the implementation of the present invention.
  • timepiece 1 is deliberately presented here in a basic form for the same sake of simplification, and the person skilled in the art will not encounter any particular difficulty in adapting the present teaching according to his own needs, in order to carry out a timepiece whose elements not directly related to the implementation of the invention may differ from those presented here, without departing from the scope of the invention as defined by the appended claims.
  • Timepiece 1 comprises a timepiece movement (which will be partially described in relation to the figure 2 ) surmounted by a dial 2 carrying indexes 4 for displaying the current time in relation to the central hands of the current hours 6 and the current minutes 8.
  • the timepiece 1 also comprises a hand 10 for displaying the lunar date, here of the retrograde type by way of non-limiting illustration.
  • the hand 10 is intended to be driven by the watch movement in such a way that its free end moves opposite a fixed indicator scale 12 of the lunar date carried by the dial 2.
  • the lunar calendars typically comprise months of twenty-nine or thirty days, also the indicating scale 12 comprises thirty date graduations, only the odd values being indicated here without limitation.
  • dial 2 further comprises a fixed colored band 14 extending substantially from one end to the other of indicator scale 12 while being substantially parallel to the latter.
  • the colored band 14 has a clear portion 16 intended to at least partially illustrate the Moon, and a complementary dark portion 18, the proportion between the light 16 and dark 18 portions varying along the indicator scale 12 to take into account the evolution of the Moon's appearance as a function of the lunar calendar.
  • the dark portion 18 could also comprise light patterns symbolizing stars, in a known manner.
  • the hand 10 has a substantially circular window 20, arranged here close to its free end to move opposite the colored band 14 and delimit a display portion thereof, at any time, to display the phases of the moon.
  • the aperture 20 scans the entire colored band 14 during a given month and makes it possible to display the phases of the Moon precisely throughout the month (lunar, for example Hijri), from and to the new moon, the first and thirty of the month, passing through the full moon, the fifteenth of the month.
  • the figure 2 represents a front view of part of a watch movement 22 making it possible to control the movements of the hand 10 to implement the display which has just been described.
  • the watch movement 22 comprises a display mechanism 24 of the lunar calendar of the basic type, by way of non-limiting illustration.
  • the watch movement 22 which will be partially described below is intended to control the movements of the hand 10 in such a way that it advances each month by one step. per day, to pass from the value 1 of the indicator scale 12 to the index corresponding to 30, before returning to the position located opposite 1.
  • the user can correct the value displayed for the lunar calendar, from the 30th to the 1st of the following month, by acting on an external control device, for example a crown (not visible) carried by a stem 26 of correction.
  • an external control device for example a crown (not visible) carried by a stem 26 of correction.
  • a dedicated pusher or corrector could be provided as an alternative.
  • the watch movement 22 can advantageously comprise a basic watch caliber including a calendar mechanism, of the simple date type, in the most basic version.
  • This calendar mechanism typically includes a date disc or ring driven from a twenty-four hour wheel to advance one step per day and perform one revolution on itself in thirty-one days. Most of the time, this date disc is driven by internal toothing.
  • date disc 28 it is possible to replace the conventional date disc with a date disc 28 slightly modified to have external toothing 30 in addition to its conventional internal toothing.
  • the date disc 28 can then act as a driving wheel for the display mechanism 24 of the lunar date, by acting on the latter once a day.
  • the lunar date display mechanism 24 comprises a frame 32, preferably secured to the plate of the basic watch caliber, bearing a star 34 whose branches cooperate with the external toothing 30 of the date disc 28.
  • the star 34 is secured a pinion 36 engaged with a wheel 38 of a retrograde wheel set further comprising a spiral cam 40.
  • the frame 32 also carries a rotary rake 42 carrying a beak 44 arranged to cooperate with the periphery of the cam 40, as well as a toothed sector 46 arranged in engagement with a wheel 48 of a date wheel set 50 carrying the hand 10 for displaying the lunar calendar and the phases of the Moon.
  • An elastic return member 52 acts on the shaft of the date wheel set 50 to tend to rotate the hand 10 in the anti-clockwise direction on the view of the figure 2 .
  • the rake 42 thus also tends to rotate in the anti-clockwise direction, which has the effect of maintaining its beak 44 in permanent contact against the periphery of the cam 40.
  • a jumper 54 is also provided to maintain the angular orientation and the end of the jumps of the star 34, in a conventional manner.
  • date disc 28 causes the star 34 to advance by one step each day, the latter in turn driving the cam 40 in rotation, in the direction of clockwise rotation on the view of the figure 2 , at an angle such that the hand 10 moves from one date scale to the next.
  • the beak 44 leaves the portion of the periphery of the cam 40 of greater radius to fall on its portion of smaller radius under the effect of the action of the elastic return member 52.
  • the rake 42 pivots in the direction of counter-clockwise rotation in such a way that the needle 10 suddenly passes from the index corresponding to 30 to graduation 1 of the indicating scale 12 .
  • the user when a month which has just ended had only twenty-nine days, the user must manually intervene on a short month correction device, on the 1st of the following month while the needle 10 again points to the index corresponding to the 30th of the (previous) month, to advance the star 34 by one step and cause the beak 44 to fall on the portion of the periphery of the cam 40 of smallest radius, and thus move hand 10 to value 1 on indicator scale 12.
  • the short month correction member can also be actuated to adjust the date following prolonged stoppage of watch movement 22.
  • the display mechanism 24 it is possible to provide as an alternative for the display mechanism 24 to include a directly integrated short month correction device, to correct the value of the date at the end of short months, in the manner of the complication called "annual calendar" in relation to the Gregorian calendar taking into account the difference in duration between the months of thirty days and the months of thirty-one days.
  • a directly integrated short month correction device to correct the value of the date at the end of short months, in the manner of the complication called "annual calendar" in relation to the Gregorian calendar taking into account the difference in duration between the months of thirty days and the months of thirty-one days.
  • the display mechanism according to the invention in conjunction with a perpetual lunar calendar mechanism, such as the perpetual Hijri calendar mechanism implemented in the watch mentioned above, marketed by Pimgiani Fleurier.
  • a perpetual lunar calendar mechanism such as the perpetual Hijri calendar mechanism implemented in the watch mentioned above, marketed by Pimgiani Fleurier.
  • Such a mechanism could in particular make it possible to ensure the drive of the wheel 38 in such a way that it makes one turn on itself in twenty-nine days or in thirty days depending on the duration of the current month, sparing any user intervention.
  • the implementation of the present invention is not limited to certain particular characteristics as they have been illustrated and described. Indeed, those skilled in the art will not encounter any particular difficulty in adapting the present teaching to their own needs and implementing a display mechanism incorporating only some of these characteristics without departing from the scope of the present invention. as defined by the claims.
  • the hand displaying the date and the phases of the Moon could present a non-retrograde circular movement, the indicator scale and the colored band then being closed on themselves, or even a retrograde translation movement , the indicator scale and the colored band being linear in this case.
  • the driving wheel set, in the watch movement, as well as the transmission chain up to the date display wheel set may take different forms while remaining within the scope of the invention as defined in the claims.
  • the star could for example be rotated in steps under the effect of the action of a rocker.
  • the distribution between the light and dark portions of the colored band be made in such a way that the latter includes representations of the Moon arranged side by side. others and illustrating the evolution of the phases of the Moon throughout the month, the number of representations of the Moon depending essentially on the length of the colored band.

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  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
EP21183562.4A 2021-07-02 2021-07-02 Anzeigemechanismus kombiniert mit einer monddatums- und mondphasenanzeige für uhrwerk Pending EP4113218A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21183562.4A EP4113218A1 (de) 2021-07-02 2021-07-02 Anzeigemechanismus kombiniert mit einer monddatums- und mondphasenanzeige für uhrwerk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21183562.4A EP4113218A1 (de) 2021-07-02 2021-07-02 Anzeigemechanismus kombiniert mit einer monddatums- und mondphasenanzeige für uhrwerk

Publications (1)

Publication Number Publication Date
EP4113218A1 true EP4113218A1 (de) 2023-01-04

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EP21183562.4A Pending EP4113218A1 (de) 2021-07-02 2021-07-02 Anzeigemechanismus kombiniert mit einer monddatums- und mondphasenanzeige für uhrwerk

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD988898S1 (en) * 2022-02-14 2023-06-13 Richemont International Sa Watch dial

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2862143B1 (fr) * 2003-11-12 2006-01-27 Montres Breguet Sa Dispositif indicateur de phases de lune dans une montre
RU2572466C1 (ru) * 2014-11-20 2016-01-10 Общество с ограниченной ответственностью "Константин Чайкин" Часы с лунным календарем
EP3570119A1 (de) * 2018-05-17 2019-11-20 Chronometrie Ferdinand Berthoud SA Anzeigemechanismus eines sich periodisch wiederholenden ereignisses, und mit einem solchen mechanismus ausgestattete uhr

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2862143B1 (fr) * 2003-11-12 2006-01-27 Montres Breguet Sa Dispositif indicateur de phases de lune dans une montre
RU2572466C1 (ru) * 2014-11-20 2016-01-10 Общество с ограниченной ответственностью "Константин Чайкин" Часы с лунным календарем
EP3570119A1 (de) * 2018-05-17 2019-11-20 Chronometrie Ferdinand Berthoud SA Anzeigemechanismus eines sich periodisch wiederholenden ereignisses, und mit einem solchen mechanismus ausgestattete uhr

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD988898S1 (en) * 2022-02-14 2023-06-13 Richemont International Sa Watch dial

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