EP3477402A2 - Mondphasen-anzeigevorrichtung - Google Patents

Mondphasen-anzeigevorrichtung Download PDF

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Publication number
EP3477402A2
EP3477402A2 EP18202473.7A EP18202473A EP3477402A2 EP 3477402 A2 EP3477402 A2 EP 3477402A2 EP 18202473 A EP18202473 A EP 18202473A EP 3477402 A2 EP3477402 A2 EP 3477402A2
Authority
EP
European Patent Office
Prior art keywords
moon
representation
display device
cover
cam
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.)
Granted
Application number
EP18202473.7A
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English (en)
French (fr)
Other versions
EP3477402B1 (de
EP3477402A3 (de
Inventor
Jean-François Mojon
Léonard VOGEL
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
Original Assignee
Richemont International SA
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 Richemont International SA filed Critical Richemont International SA
Publication of EP3477402A2 publication Critical patent/EP3477402A2/de
Publication of EP3477402A3 publication Critical patent/EP3477402A3/de
Application granted granted Critical
Publication of EP3477402B1 publication Critical patent/EP3477402B1/de
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Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/26—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 the field of watchmaking. More particularly, it relates to a moon phase display device combined with the display of another time unit.
  • Timepieces provided with a moon phase indication device are appreciated by the users. It is for this reason that manufacturers have proposed a large number of variations on this theme.
  • the document EP1321832 which reveals a simple retrograde display indicating the moon phases through a needle that moves in front of a scale.
  • the object of the invention is, therefore, to provide a display device for original timepiece, wherein the aforementioned defects are at least partially overcome.
  • the invention relates to a display device for a timepiece, comprising an indication member of a civilian time unit.
  • the device further comprises a representation of the moon and a moon cover, said representation of the moon and said moon cover being arranged to move relative to each other about a common axis in order to represent the moon phases on a cycle of substantially lunation. It goes without saying that the duration of a lunation, which is of the order of 29 days 12 hours and 44 minutes, can be approximated in order to simplify the construction of the wheels.
  • a first one of the representation of the moon and the moon-cover is rotatably connected to said indication member, and a second one of the representation of the moon and the moon-cover is arranged to make a movement. relative to said first, so as to indicate the moon phases.
  • Said first element may be carried by the indicating member being integral with the latter, or may be a separate element.
  • the indication of the moon phases is combined with the display of the civil time unit, which optimizes the space occupied on the dial by these two displays.
  • the time division is the date, displayed on a sectoral scale, forming a retrograde display.
  • the display device comprises at least one PTO arranged to be driven by a movement that includes the timepiece, and a first and a second kinematic chains.
  • the first of these kinematic chains extends from said at least one power take-off and is arranged to control the angular position of the indication member.
  • the second kinematic chain extends from said at least one power take-off and is arranged to control the angular position of said second one of the representation of the moon and the moon cover, that is to say the one which is not integral in rotation with the indication member.
  • the device further comprises a differential gear.
  • This differential gear has a first input in kinematic connection with, or part of, the first kinematic chain; a second input forming part of the second kinematic chain; so an output kinematic connection with said second from the representation of the moon and the moon cover. The steering of this last element is thus optimized.
  • the first kinematic chain comprises a snail-shaped cam whose radius is representative of the time division, a cam follower in contact with the cam being in kinematic connection with the indication member.
  • the cam can be arranged to be driven by steps through a corresponding star.
  • the second kinematic chain comprises a moon phase cam, whose radius is representative of the moon phases, and a second cam follower which is in contact with the moon phase cam.
  • the cam follower is kinematically connected to said second one of the representation of the moon and the moon cover.
  • the second input of the differential gear is in kinematic connection with the cam follower.
  • the display device comprises a return spring in kinematic connection with the output. Since the output is in kinematic connection with each of the kinematic chains, a single return spring, thus configured, can act on each of the chains and thus maintain at least one, preferably each, of said cam followers bearing against its cam .
  • the representation of the moon which is integral with the indicating member and which is therefore said first of said representation of the moon and said moon cover.
  • the moon cover is then said second of said representation of the moon and said moon cover.
  • the display device can be arranged to indicate the moon phase in the northern hemisphere as well as in the southern hemisphere simultaneously.
  • the invention also relates to a watch movement comprising a display device as described above, as well as a timepiece comprising such a movement.
  • FIGS. 1 and 2 illustrate a preferred embodiment of a display device 1 according to the invention, seen from the bottom and the dial side respectively.
  • This device 1 comprises a representation of the moon 3 and a moon cover 5 arranged to be superimposed on the representation of the moon 3 in order to mask the latter at least partially according to the respective angular position of these two elements.
  • the entire representation of the moon 3 and the moon cover has a representative aspect of the moon phases.
  • these two elements take the form of discs driven in revolution around a common axis of rotation 7 and which are therefore coaxial.
  • one or the other or each of these elements can be provided on a complete disk.
  • the moon cover 5 may be, for example, a disc provided with a transparent area or an opening to reveal the moon 3 or may be a transparent disc having a dark area which represents the shadow.
  • the representation of the moon 3 may be a bright area provided on a dark colored disc.
  • the representation of the moon 3 is integral in rotation with an indication member 9, which is intended to indicate the value of a civil time unit and therefore non-astronomical on a corresponding scale 10 provided on the dial (see Fig. 4 to 7 ).
  • "Civil time” refers to units of time commonly used in everyday life, whose complete cycle and / or divisions do not correspond directly to a cycle of a star such as the moon or the sun.
  • an astronomical unit of time such as lunations and years, corresponds directly to the movements of the moon around the earth or the earth around the sun.
  • the indicating member 9 is in the form of a needle (but any other suitable form is also possible) and the unit of time is the date. Therefore, scale 10 has 31 divisions, one for each day of a 31-day cycle. Note also that the scale 10 and the indicating member 9 can be arranged on the dial according to the needs of the manufacturer. Furthermore, the representation of the moon 3 can be carried by, and therefore integral with, the indicating member 9.
  • the movable elements of the display may have any rays at the will of the manufacturer.
  • the same principle can also be applied to other units of the civil time, such as the days of the week, the number of the week, the month, the hours, the minutes, the seconds or any other civil time unit. whose length of the cycle and / or the unit of time is not directly related to a lunation.
  • the modifications necessary for the kinematics described here (especially in terms of the number of branches of the stars 13, 33 and gear ratios) to display other units of time are within the reach of those skilled in the art and therefore must not be described in detail.
  • the indicating member 9, which bears the representation of the moon 3, is rotated by a first kinematic chain 11.
  • Any power take-off (toothed wheel, movable finger, moving lever, drive system of the type " instantaneous date "or similar) on the basic movement 53 (see Fig. 3 ) of the timepiece in turn drives a first star 13 at a rate of one step per day, by means of a conventional date training system. Since the unit of time is here the date, the first star 13 has 31 branches and thus performs a turn by 31 days. It is positioned angularly by means of a first jumper 14.
  • the first star 13 carries a date-shaped cam 15 in the shape of a snail whose radius of its periphery corresponds to the date to be displayed.
  • a cam follower 17 is kept in contact with the periphery of the cam 15 by a restoring force whose origin will be described below. It may be noted that it is not mandatory that the first cam 15 be carried directly by the star 13; the cam 15 may alternatively be carried by an intermediate mobile.
  • the cam follower 17 is carried by one end of a rocker 19 which also carries a rack 21 at its other end. This rack 21 meshes in turn with an intermediate mobile 23 which is in kinematic connection with the barrel 25 carrying the representation of the moon 3.
  • this kinematic connection passes through a first input 27 of a differential gear 29.
  • the intermediate wheel 23 can be in direct kinematic connection with the cannon wheel 25 or via a or more) other dedicated intermediate mobile (s).
  • the differential gear 29 illustrated here takes the form of a flat differential, the first input 27 of which is the aforementioned planet carrier which carries any number of satellites 47 (two in this case). These are pivoted on the planet carrier 27 and meshing each with both the sun gear 45 which serves as a second input and with an internal toothing that includes a ring 49 acting as an outlet. The external toothing of this ring 49 meshes itself with a second cannon wheel 51 which is integral in rotation with the moon cover 5.
  • the differential gear 29 is a flat differential, all other differential gear constructions are within the abilities of those skilled in the art.
  • the indicating member 9 and thus the representation of the moon 3 pivot according to the shape of the cam 15, making a retrograde angular displacement with a period of 31 days .
  • a display performing complete turns is also possible, as explained in connection with the Fig. 3 below.
  • the moon cover 5 is driven by a second kinematic chain 31 which is connected by a PTO to the base movement, in the same way as the first chain 11, the PTO driving a second star 33 at a rate of not a day.
  • This PTO may be the same as or different from that resulting in the first kinematic chain 11.
  • This star 33 has 14 branches and therefore performs a complete revolution in 14 days, its positioning being provided by means of a second jumper 34 .
  • the fourteen star 33 drives a moonphase cam 37 through a reduction gear 35 so that said cam 37 rotates in substantially 29 days 12 hours and 44 minutes, which corresponds to a lunation.
  • This cam 37 is followed by a second cam follower 39, also carried by one end of a latch 41, also provided with a second rack 43 at its other end.
  • the second rack 43 meshes with a set of transmission elements 46 comprising two intermediate wheels 46a1 and 46b, which in turn are engaged with a second input 45 of the differential gear 29.
  • this second Input 45 is a sun gear, but any other kind of input can also be used.
  • the first star 13 can simply be rotated in one direction by means of a first corrector 61.
  • This corrector can be of any type, well known in the art. timepieces with a calendar, arranged to pivot the first star 13 in steps.
  • a similar corrector may also be provided for making moon phase corrections without influencing the date displayed, by acting similarly in the other direction (opposite direction) on the star of fourteen 33 by means of the correction lever (c) and its blade (I) which is supported on the finger (d).
  • the moon cover 5 can be secured in rotation with the indication member and controlled by means of the first kinematic chain.
  • the representation of the moon 3 is positioned appropriately and is controlled by the second kinematic chain 31 whose kinematics has been modified accordingly for the moon phases to display correctly.
  • the relative rotational directions of the representation of the moon and the moon cache 5 can be adapted to display the moon phases in the northern hemisphere or in the southern hemisphere; the modifications required (in particular in terms of the shape of the phase cam) are within the abilities of those skilled in the art.
  • the set of transmission elements 46 could be replaced by a single intermediate wheel.
  • Each of the kinematic links 11, 31 is connected to the watch movement 53 by the PTO 54, which is on the same mobile or two different mobiles, if any.
  • the mobile PTO 54 can perform a drive chains kinematic 11, 31 in terms of discrete steps or continuous movements, depending on the choice of the manufacturer.
  • the first kinematic link 11 directly drives the indicating member 9 carrying a first of said representation of the moon 3 and said moon cover (here the representation of the moon 3). This indicating member 9 pivots around an axis 7 and displays the desired unit of time on the scale 10.
  • the first kinematic link 11 is a direct desmodromic link constructed so that the indicating member 9 makes displacements. in front of the scale 10 with an appropriate rotation speed to indicate the desired unit of time. Displacements of the indicating member are thus controlled exclusively by the first kinematic chain 11, without being influenced by the second kinematic chain 31.
  • this first kinematic link can be formed simply of gear wheels having a gear ratio appropriate so that the indicating member 9 performs complete turns in one direction with the desired period.
  • the first kinematic chain 11 may comprise cams and racks (or the like) in order to provide a retrograde display as in the embodiment of FIGS. Fig. 1 and 2 .
  • the first input 27 of the differential gear 29 may be part of the first kinematic link 11 or may be in branch with respect to the latter, this alternative construction being represented with a broken line.
  • the second kinematic chain 31 extends from the PTO 54 to the second of said representation of the moon 3 and said moon cover 5 (here the moon cover 5).
  • the second kinematic chain includes the second input 45 and the output 49 of the differential gearing 29.
  • the portion of this chain upstream of the second input 45 is arranged so that the angular position of the second input corresponds to the position relative to said representation of the moon 3 and said moon cover 5.
  • This upstream portion of the kinematic chain may thus comprise a cam, a lever system or the like, configured for this purpose.
  • the moon cover 5 follows the rotation of the indicating member 9 and the indicated moon phase remains unchanged.
  • the indicating member 9 remains (almost) immobile and the moon cover 5 pivots independently of the latter.
  • the displayed moon phase is thus modified without influencing the angular position of the indicating member 9.
  • hull 5 thus follows the rotation of the indicating member 9 under the control of the first kinematic chain 11 and the relative angular position of these two elements is modified according to the second kinematic chain 31.
  • each of the kinematic chains 11, 31 is arranged so that the driving of the display members 3, 7, 9 is in discrete steps as in the variant of Fig. 1 and 2 . It is also possible for at least one, or each, of said kinematic chains to be arranged so that the corresponding display member 3, 7, 9 is driven continuously.
  • cams 15, 37 have been used in the kinematic chains 11 and 31 respectively, the latches 19, 41 are subjected to restoring forces allowing the cam followers 17, 39 to remain in contact with their cams 15, 37 respectively. .
  • a possible solution would be to provide a return spring for each latch 19, 41.
  • the construction of the present embodiment uses only one return spring 55, for example in the form of a spiral, in kinematic connection with the second kinematic chain 31.
  • the outer end of the return spring 55 is fixed to the frame (not shown), and its inner end is integral in rotation with a mobile 57.
  • the latter is in kinematic connection with the second wheel 51 (which, for recall , carries the moon cover 5) via a gear multiplier comprising an intermediate mobile 59. Since the second barrel wheel 51 meshes with the ring 49 acting as output of the differential gear 29, the spring 55 is kinematically connected with, and can act on each of the kinematic chains 11, 31 through the two inputs 21, 49.
  • FIG. 4 to 7 illustrate how the appearance of the display device 1 appears in different positions.
  • moon 3 is full on the 30th of the month.
  • the moon cover 5 has recently made a jump from the left side of the representation of the moon 3 (with reference to the figure) to the illustrated position so that the descending moon can be displayed later.
  • the mechanism is arranged to display the moon phases in the southern hemisphere, the moon cover 5 will soon "bounce" counterclockwise, that is to say change direction, relative to the representation of the moon 3, for the same purpose.
  • a representation of the moon phase in the southern hemisphere can be obtained by arranging the representation of the moon 3 and the moon cover 5 in a manner diametrically opposed to their representation in the drawings, that is to say to 10. In this way, the moon phase in the southern hemisphere can be indicated using the same rotational directions mentioned below.
  • a dual display to simultaneously indicate the moon phase in both hemispheres, providing two representations of the moon 3 and two moon caches 5 arranged diametrically opposite to the moon.
  • axis 7. This principle of a dual display is described in the document EP1708049 and should not be described in detail here. In such a case, the rotation directions are also as described below. In each case, the indicating member 9 and the scale can be arranged at the will of the manufacturer.
  • the last quarter of the moon phases is displayed on the 20th of the month; the moon cover 5 is making a relative movement in the counterclockwise direction with respect to the representation of the moon 3, which has the effect that the latter is hidden progressively.
  • the Fig. 6 illustrates an increasing gibbous moon on the 30th of the month, with the moon cover 5 approaching the point where it will make a relative jump from the representation of the moon 3 towards the relative position illustrated on the Fig. 4 .
  • Fig. 7 illustrates a new moon on the 16th of the month.
  • the moon cover 5 completely covers the representation of the moon 3, and will, subsequently, let appear the first crescent.

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  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Transmission Devices (AREA)
EP18202473.7A 2017-10-27 2018-10-25 Mondphasen-anzeigevorrichtung Active EP3477402B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH13022017 2017-10-27

Publications (3)

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EP3477402A2 true EP3477402A2 (de) 2019-05-01
EP3477402A3 EP3477402A3 (de) 2019-05-08
EP3477402B1 EP3477402B1 (de) 2024-05-01

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EP18202473.7A Active EP3477402B1 (de) 2017-10-27 2018-10-25 Mondphasen-anzeigevorrichtung

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3819716A1 (de) * 2019-11-05 2021-05-12 The Swatch Group Research and Development Ltd Demand-mondanzeigvorrichtung
FR3133242A1 (fr) * 2022-03-07 2023-09-08 Watch Connaisseur Project Sa Representation astrale
WO2023217830A1 (fr) * 2022-05-12 2023-11-16 La Montre Hermès S.A. Mecanisme d'affichage des phases de la lune pour mouvement horloger
JP7494093B2 (ja) 2020-11-12 2024-06-03 セイコーウオッチ株式会社 情報表示機構、ムーブメント及び時計

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1321832A1 (de) * 2001-12-20 2003-06-25 Frédéric Piguet S.A. Eine Uhr, bestehend aus einem Mechanismus zum anzeigen der Mondphasen mit rückläufiger Umstellung
CH696917A5 (fr) * 2003-11-12 2008-01-31 Montres Breguet Sa Dispositif indicateur de phases de lune dans une montre.
JP3136017U (ja) * 2004-08-16 2007-10-11 アスラブ・エス　アー 日付を表示し、かつ天文情報を指示するウオッチ
CH705128B1 (fr) * 2011-06-16 2015-10-15 Télôs Watch SA Dispositif d'affichage du quantième et de la phase de lune.
CN202548538U (zh) * 2012-02-14 2012-11-21 天津海鸥表业集团有限公司 手表月相指针的飞返机构

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3819716A1 (de) * 2019-11-05 2021-05-12 The Swatch Group Research and Development Ltd Demand-mondanzeigvorrichtung
WO2021089722A3 (fr) * 2019-11-05 2021-08-12 The Swatch Group Research And Development Ltd Dispositif d'affichage de lune a la demande
CN114641733A (zh) * 2019-11-05 2022-06-17 斯沃奇集团研究和开发有限公司 用于按需显示月亮的装置
JP2022552699A (ja) * 2019-11-05 2022-12-19 ザ・スウォッチ・グループ・リサーチ・アンド・ディベロップメント・リミテッド 要求に応じて月を表示するデバイス
JP7494093B2 (ja) 2020-11-12 2024-06-03 セイコーウオッチ株式会社 情報表示機構、ムーブメント及び時計
FR3133242A1 (fr) * 2022-03-07 2023-09-08 Watch Connaisseur Project Sa Representation astrale
EP4242751A1 (de) * 2022-03-07 2023-09-13 Watch Connaisseur Project SA Astraldarstellung
WO2023217830A1 (fr) * 2022-05-12 2023-11-16 La Montre Hermès S.A. Mecanisme d'affichage des phases de la lune pour mouvement horloger

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Publication number Publication date
EP3477402B1 (de) 2024-05-01
EP3477402A3 (de) 2019-05-08

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