EP4006651B1 - Mondphasen-anzeigemechanismus - Google Patents

Mondphasen-anzeigemechanismus Download PDF

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Publication number
EP4006651B1
EP4006651B1 EP21206648.4A EP21206648A EP4006651B1 EP 4006651 B1 EP4006651 B1 EP 4006651B1 EP 21206648 A EP21206648 A EP 21206648A EP 4006651 B1 EP4006651 B1 EP 4006651B1
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EP
European Patent Office
Prior art keywords
wheel
pinion
moon
display
moonphase
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EP21206648.4A
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English (en)
French (fr)
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EP4006651A1 (de
Inventor
Gilles Rey-Mermet
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Manufacture dHorlogerie Audemars Piguet SA
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Manufacture dHorlogerie Audemars Piguet SA
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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
    • G04B19/26—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 moon phase display mechanism for a timepiece, comprising a first mobile having a nocturnal background and at least one portion of lunar background and a second mobile superimposed on the first mobile, said second mobile presenting a background night and moon phase profiles.
  • the present invention also relates to a timepiece comprising such a display mechanism.
  • the moon phase display mechanism comprises a first moon disk comprising two light-colored circles symbolizing the moon, inscribed on a dark background symbolizing the night sky.
  • the dial includes an aperture which can be used, in cooperation with the moon disc, to indicate the moon phases by concave-shaped symbols.
  • this second disk is arranged to function as a concealment disk cooperating with the first moon disk and possibly with the aperture to obscure the circles symbolizing the moon so as to indicate the moon phases in particular by shape symbols convex.
  • the moon disk is rotated to turn 180° per lunar period so that the user follows the daily evolution of the different moon phases from the new moon appearing to the left of the aperture to the last crescent appearing on the right of the wicket, during a lunation, in a way classic.
  • a program wheel is provided to advance the moon disk each day and to rotate the occultation disk only at the time of a change of moon phase so as to obscure differently one of the moons represented on the disk moon. Then the concealment disk remains stationary until its next rotation.
  • This mechanism makes it possible to obtain, on a timepiece, a display of the moon phases which corresponds to a real appearance of the phases of the moon during the entire duration of the lunation by displaying all the phases of waxing and waning of the moon. part visible on earth of the illuminated surface of the moon.
  • the configuration of the windows does not make it possible to give the terminator of the different moon phases displayed a realistic appearance.
  • a moon phase display mechanism is also described in the publication EP 1 701 227 . It may include two superimposed disks carrying n images representative of the different phases of the moon and a drive mechanism arranged so as to scroll successively and in periodic jumps of 44 hours and 15 minutes said n images.
  • Said drive mechanism comprises a jumper arranged to cooperate with pins carried by each disc, said discs also comprising fingers arranged so as to be able to cooperate with one another during the rotation of the discs, the finger carried by the disc driven with each jump of the saltire pushing the other finger.
  • the disks complete a complete cycle in sixteen jumps, each having a period of 44 hours and 15 minutes, so that a complete revolution is completed approximately in one lunar month.
  • the displayed moon phase image remains fixed throughout its display period, with the moon phase image changing by jumping every 44 hours and 15 minutes.
  • the patent EP 0 107 177 describes a timepiece with moon phase indicator, comprising two indicator members, superimposed and parallel to the movement, arranged and moving relative to each other at different speeds so that, respectively, the the lower organ comprising a shiny upper face and at least one dark-colored moon circle, appears partially through a moon window of the upper organ comprising a dark-colored upper face, in order to draw the figure of the moon according to of the quarter it occupies in relation to the time displayed by the time indicating organs, the full moon appearing successively after each period corresponding to the lunar month.
  • This mechanism requires a 360° moon phase display so its dimensions must be reduced so as not to clutter the dial.
  • the present invention aims to remedy these drawbacks by proposing a new original display of moon phases for a mechanical timepiece, making it possible to display all the phases of growth and decay of the part visible on earth of the illuminated surface of the moon, with a realistic terminator, against a large sky background, behind a horizon independent of the moon profile displayed.
  • the invention relates to a mechanism for displaying n moon phases for a timepiece where n is preferably an odd integer greater than or equal to 3, comprising a first mobile provided with a first toothing and having a night background and at least a portion of lunar background and a second mobile provided with a second toothing and superimposed on the first mobile, said second mobile having a night background and moon phase profiles and the first and second mobiles being pivoted around of the same axis, said display mechanism being arranged so that the first mobile is capable of being driven in rotation at a constant speed, that the second mobile is capable of being driven in rotation at the same angular speed and in the same direction as the first mobile during a period of displaying a moon phase during which a portion of the lunar background of the first mobile and a moon phase profile of the second mobile corresponding to the moon phase to be displayed are superimposed to reveal said moon phase, and so that the second mobile is offset relative to the first mobile by a repositioning angle during a transitional period between the current display period and the next
  • the first mobile is arranged to be able to be driven by a motor train and to cooperate with a drive device, said drive device being arranged to drive the second mobile in a synchronized manner during the display period of a moon phase and to drive it in relative rotation in order to shift it from said repositioning angle during a transitional period.
  • the display mechanism according to the invention makes it possible to choose the phase profiles of the moon so as to be able to display, in a realistic manner, all the phases of growth and decay of the part visible on earth of the illuminated surface of the moon.
  • said display mechanism comprises a dial comprising a display window of dimensions chosen to reveal the movement of a moon phase during at least part of its display period. More specifically, the display window is of dimensions chosen to display at any time in said window at most one moon phase.
  • the display window of the dial has a substantially annular shape whose radial edges constitute a horizon line.
  • the first and second mobiles are able to rotate clockwise so as to represent the movement of a moon phase between its rising and its setting on the horizon.
  • the moon phase profiles appearing on the second mobile are revealed independently of the edges of the display aperture, so that the different moon phases appear to move against a sky background delimited by the edges of the aperture, the radial edges which can constitute a customizable horizon line.
  • the moon phase profiles of the second mobile have a profile defined by the terminator corresponding to a moon phase and the arc of the circle of the outer edge of the moon.
  • the edge of the moon phase profile corresponding to the terminator includes reliefs illustrating details of the moon.
  • the present invention also relates to a timepiece comprising a moon phase display mechanism as defined above.
  • the present invention relates to a moon phase display mechanism for a timepiece as well as a timepiece, and more particularly a mechanical timepiece, comprising such a display mechanism.
  • such a timepiece 1 is shown, and more particularly a wristwatch comprising in particular a dial 2 and a set of hands 3, 4, 5 in the center of the dial 2, to indicate the time, in a traditional manner .
  • the moon phase display mechanism includes a dial, here constituted by dial 2 to indicate the hours of the watch.
  • This dial 2 presents a display window 6 which will be described in more detail below. It is obvious that the moon phase display dial can be different from the hour display dial, by being placed in a chosen area of said hour display dial of the watch.
  • the moon phase display mechanism comprises a first mobile 8 in the form of a disc with center C, comprising a board 8a and external teeth 8b.
  • the board 8a has a nocturnal background 10 and at least one portion of lunar background 12.
  • the nocturnal background 10 occupies the largest surface area of the board 8a, the remaining surface being occupied by the portion(s) of lunar background.
  • the nocturnal background 10 is a decoration representing the sky at night.
  • the first mobile 8 has x portions of lunar background 12, x being greater than or equal to 1 and less than n, said x portions of lunar background 12 being regularly distributed on the first mobile 8, separated from each other. others by the nocturnal background 10.
  • the lunar background portions are decorations representing a surface of the moon chosen to adapt to all the possible configurations corresponding to the different phases of the moon to be displayed.
  • the moon decoration can be reproduced by decal, printing, engraving or any other appropriate technique.
  • the moon phase display mechanism comprises a second mobile 14 in the form of a disc with center C', comprising a board 14a and external teeth 14b.
  • the board 14a has a nocturnal background 16 and an odd number n of moon phase profiles 18.
  • Said second mobile 14 is superimposed coaxially on the first mobile 8 along an axis passing through C and C', that is to say positioned above the first mobile 8, seen by a user looking at dial 2.
  • the night background 16 of the second mobile 14 is identical to the night background 10 of the first mobile 8, or at least similar in appearance, so that they merge when the night background 10 of the first mobile 8 appears in the profiles moon phase 18 of the second mobile 14 so as not to allow said moon phase profiles 18 to appear when they are not superimposed on a lunar background 12.
  • the moon phase profiles 18 represent the different phases of waxing and waning of the part visible on earth of the illuminated surface of the moon. More particularly, the moon phase profiles 18 are configured to be able to represent all the phases of growth and decay of the part visible on earth of the illuminated surface of the moon, for example by a concave shape for the first and last crescents, a D shape for the first quarter and an inverted D for the last quarter, a circular shape for the full moon and a convex shape for the waxing and waning gibbous moons.
  • the moon phase profiles 18 can be formed by openings made in the board 14a of the second mobile 14 comprising the nocturnal background 16. It is also possible to provide a second solid mobile 14, and for which at least the portions in which are shown, the moon phase profiles 18 are at least translucent, and preferably transparent. In particular, it is possible to create gradients in the transparency levels in order to give a spherical effect to the revealed moon.
  • at least said portions, and preferably the second mobile 14, can be made of sapphire or glass provided with a polarizing layer.
  • the nocturnal background 16 is formed by the deposition, around the moon phase profiles 18, of a thin layer applied or structured, preferably on the lower face of the board 14a of the second mobile 14, in order to minimize the effect of parallax between the first and second mobiles 8, 14.
  • the moon phase profiles 18 have a profile corresponding to the shape of the illuminated surface of the moon, defined by the terminator 18a corresponding to the different moon phases that it is desired to be able to display and an arc of circle 18b corresponding to the outer edge of the moon.
  • the edge of the moon phase profile corresponding to the terminator includes reliefs illustrating details of the moon. It is thus possible to form by cutting or drawing on the edge of the moon phase profile corresponding to the terminator details of craters or seas, in particular those which are made visible in the raking light of the sun.
  • the lunar bottom portions 12 provided on the first mobile 10 are in the form of circular sectors with an angle substantially equal to 360/n°, regularly distributed on the board 8a of the first mobile 8, separated from each other by the bottom night 10, while n circular sectors juxtaposed and regularly distributed on the board 14a of the second mobile 14, with an angle equal to 360/n°, are made available to represent the n moon phases to be displayed.
  • the n moon phase display mechanism is arranged so that said first and second mobiles 8, 14 are pivoted around the same axis, here the central axis, perpendicular to the first and second mobiles 8 and 14 passing through C and C'.
  • the first mobile 8 is able to be rotated by the movement, at a constant speed.
  • the mechanism is arranged so that the second mobile 14 is rotated at the same speed and in the same direction as the first mobile 8 during a period of display of a moon phase during which a lunar background portion 12 of the first mobile 8 and a moon phase profile 18 of the second mobile 14 corresponding to the moon phase to be displayed are superimposed to reveal said moon phase, and so that said second mobile 14 can be offset relative to the first mobile 8 by a repositioning angle during a transitional period between the current display period and the next display period in order to be able to reveal the next moon phase.
  • the moon describes a lunation cycle of 29.5 days in n stages of 29.5/n days during which the displayed moon phase obtained by conjunction of the second mobile 14 with the first mobile 8, does not change, but moves regularly with the night background.
  • the position of the moon phase displayed on the dial 2 indicates to the user the state of progression of the moon phase displayed (beginning, middle or end of the phase). Then, advantageously, the displayed moon phase disappears to reveal the next moon phase for 29.5/n days.
  • the display window 6 has dimensions chosen to reveal the movement of a moon phase during at least part of its display period. More particularly, the display window 6 is of dimensions chosen to display at any time in said window 6 at most one moon phase. In addition, the display window 6 is of dimensions chosen so that the remaining surface of the dial 2 masks the offset between the first and second mobiles 8, 14 during the transitional period.
  • the moon phase profiles 18 being independent of the display window 6 but also independent of each other, each of the moon phase profiles 18 can occupy the same circular sector surface of the board 14b of the second mobile 14. From this in fact, each of the moon profiles 18 appears with large dimensions in an enlarged display window compared to a standard moon phase display window.
  • the display window 6 has a substantially annular shape, coaxial with the first and second mobiles 8, 14, and whose radial edges 6a, 6b constitute a horizon line. At least one of the radial edges 6a, 6b of the display window 6 can have a shape chosen to represent for example the profile of a mountain 6c, a monument or a city on the horizon, customizable in depending on the wishes of the user or the place of purchase of the timepiece. This foreground consisting of a horizon line creates a contrast with the moon phase displayed in the sky, which gives the sensation of obtaining a large moon.
  • the first and second mobiles 8, 14 are capable of being able to rotate clockwise so as to represent the movement of a moon phase on the horizon between its rising in the east, to the left of the aperture window. display 6, and its setting to the west, to the right of display window 6.
  • the first mobile 8 is arranged to be able to be driven at a constant speed by a motor train (not shown) of the timepiece, and to cooperate with a drive device, said drive device being arranged to drive the second mobile 14 in a synchronized manner during the period of display of a moon phase and to drive it in relative rotation in order to shift it from said repositioning angle during a transitional period.
  • the moon phase profiles 18 of the second mobile 14 are positioned relative to each other as a function of the chosen direction of relative rotation of the second mobile 14 relative to the first mobile 8 so that the phase of next moon phase is displayed in place of the current moon phase when the second mobile 14 is driven in relative rotation with respect to the first mobile 8 by the drive device in said direction of rotation chosen during the transitional period.
  • the number x of lunar bottom portions 12 on the first mobile 8 may be equal to or greater than 1, said first and second mobile 8, 14 are arranged to be able to be offset relative to each other by said repositioning angle during the transitional period between the current moon phase display period and the next moon phase display period.
  • the shift between the two mobiles 8 and 14 occurs after the moon phase which was displayed hides under the horizon to the west, to reveal the following moon phase to the east .
  • the moon phase profiles 18 of the second mobile 14 are positioned relative to each other so that the repositioning angle is equal to 360/2n°.
  • the drive device comprises an energy accumulator arranged to be driven by the first mobile 8 which is itself driven by the motor train, and arranged to advance the second mobile 14 by jumping under the action of said energy accumulator during the transitional period.
  • Such a training device is for example represented on the figures 5 to 8 .
  • the drive device with energy accumulator 20 comprises three wheels superimposed coaxially along an axis parallel to the central axis, namely a first toothed wheel 22 arranged to be driven by the first mobile 8 by the intermediate of its external teeth 8b.
  • Said first wheel 22 is integral with a cam 24 which for example here has four sectors.
  • the drive device with energy accumulator 20 also comprises a second toothed wheel 26 arranged to also be driven by said first mobile 8 by its external teeth 8b, but at a greater speed than the first wheel 22.
  • said first and second wheel 22 and 26 have a different number of teeth.
  • Said second wheel 26 carries a pin or tenon 28 whose role is described below.
  • the drive device with energy accumulator 20 also comprises a third toothed wheel 30 arranged to drive the second mobile 14 by its external teeth 14b.
  • Said third wheel 30 comprises a groove 32 in which the pin or tenon 28 of the second wheel 26 engages, so that the angular freedom of the third wheel 30 relative to the second wheel 26 is limited by said groove 32 by an abutment effect of said groove 32 with the pin 28.
  • the third wheel 30 carries a jumper 34 pivotally mounted and provided with a jumper spring 36, said jumper 34 being arranged to cooperate with the cam 24 of the first wheel 22.
  • the jumper 34 can present at its free end a caster or roller 38 passing through the third wheel 30 through an opening 39 provided in the board of said third wheel 30, said caster 38 being arranged to cooperate with the profile of the cam 24.
  • the jumper 34 working in tension with the cam 24 makes it possible to make the third wheel 30 integral in rotation with the first wheel 22 for synchronized driving of the first and second mobiles 8, 14 as long as the pin 28 of the second wheel 26 is not abutting in the groove 32 of the third wheel 30.
  • the difference in speed between the first and second wheels 22, 26 creates an angular offset under the effect of the drive of the mobile 8 which meshes with the two wheels 22 and 26, so that the pin 28 of the second wheel 26 moves freely in the groove 32 of the third wheel 30.
  • Said pin 28 abutting in the groove 32 makes the third wheel 30 of the second wheel 26 integral in rotation, so that the jumper 34, forced to move on the profile of the cam 24, stores energy via its spring 36.
  • the profile of the cam 24 is chosen so that the wheel 38 of the jumper 34 is in a hollow bottom of said profile of the cam 24 during the synchronized driving phase of the two mobiles 8 and 14, until the pin 28 arrives in abutment in the groove 32.
  • this first variant of training device 20 is detailed below, with particular reference to the figures 5 , 9 , 9a to 12 , 12a , and in relation to a preferred embodiment of the moon phase display mechanism according to the invention.
  • the first mobile 8 comprises two lunar bottom portions 12 opposed symmetrically with respect to the central axis, as shown on the Figure 3 , and is able to be driven by the motor train (not shown) of the timepiece at a constant speed of n half-turns per lunation.
  • This rotation speed is obtained by means of, for example, a moon drive gear well known to those skilled in the art.
  • n is equal to 9, so that the first mobile 8 is arranged to be driven by the motor gear continuously in a clockwise direction at a constant speed of 9 half-turns per lunation.
  • the second mobile 14 comprises 9 moon phase profiles 18 which are arranged in the sequence, clockwise, first crescent a, waning moon b, waning gibbous moon c, waxing gibbous moon d, waxing moon e, last crescent f, last quarter g, full moon h, first quarter i, each occupying a circular sector of 40° (360/9), as shown in the Figure 5 .
  • the display window 6, of annular shape coaxial with the first and second mobiles 8, 14, extends over an angle of approximately 140°.
  • the drive device 20 is arranged to drive the second mobile 14 in a synchronized manner during the period of display of a moon phase, at the same speed as the first mobile 8, and to drive it in relative rotation, thanks to to the energy accumulator, in order to shift it by the necessary repositioning angle during a transitional period.
  • the second mobile 14 is shifted clockwise by a repositioning angle of 20° (360/2*9) during a transitional period between the display period of a phase of moon and the display period of the next moon phase, the display period of a moon phase being approximately 3.28 days (29.5/9).
  • the training device with its energy accumulator 20 is shown on the Figure 5 to the left of the first and second superimposed mobiles 8 and 14. It is obvious that it can be positioned at any other location on the periphery of said mobiles 8 and 14.
  • the first mobile 8 and the second mobile 14 are positioned so that the moon phase profile 18 of the second mobile 14 corresponding to the full moon h is superimposed on a lunar background portion 12 of the first mobile 8 so as to reveal the full moon, to the left of display window 6 (not shown in these figures), corresponding to the east.
  • the other moon phase profiles 18 which are in the display window 6 are superimposed on the night background 10 of the first mobile 8 so that they are not visible, the night background 10 of the first mobile 8 which appears through said moon phase profiles 18 merging with the nocturnal background 16 of the second mobile 14.
  • the other moon phase profiles 18, and in particular those through which the other portion of lunar background 12 appears on the other side of the central axis, are hidden under the display window 6. They are therefore not visible to the user.
  • the energy accumulator drive device 20 drives the first and second mobiles 8 and 14 at the same speed of 0.5 x 9 revolutions/29.5 days.
  • the third wheel 30 is integral in rotation with the first wheel 22 by the jumper 34, its caster 38 being held supported by the spring 36 in a hollow bottom of the profile of the cam 24.
  • the first mobile 8 driven by the motor cog of the basic movement at the constant speed of 0.5 x 9 revolutions/29.5 days drives the first wheel 22 of the drive device 20 via its external teeth 8b and therefore the third wheel 30 which meshes with the second mobile 14, so that this last rotates in synchronization with the first mobile 8, at the same speed of 0.5 x 9 revolutions/29.5 days and in the same direction.
  • the two mobiles 8 and 14 rotate together so that the full moon displayed in the display window 6 moves in said window 6, against a nocturnal background, consisting of the night background 10 of the first mobile 8 which appears through the moon phase profiles 18 which are presented in the aperture 6 and the night background 16 of the second mobile 14, in clockwise direction, from left to right (from east to the west), for 3.28 days (29.5/9).
  • the pin 28 of the second wheel 26, which rotates more quickly than the first and third wheels 22, 30, shifts without constraint in the groove 32 of the third wheel 30.
  • the full moon reaches the right of display window 6, i.e. the west and on the other side of the axis central, the other lunar background portion 12 is out of phase both in the moon phase profile d corresponding to the waxing gibbous moon and in the moon phase profile c corresponding to the waning gibbous moon, hidden under the left of said window 6, as shown in the figures 10, 10a .
  • the pin 28 is then abutting in the bottom of the groove 32.
  • the second wheel 26 still driven by the first mobile 8 and the third wheel 30 are joined in rotation.
  • the jumper 34 mounted on the third wheel 30 is therefore forced to come out of its bottom position in the profile of the cam 24.
  • the energy stored by said spring 36 is sufficient to allow the jump to be made by suddenly releasing the accumulated energy to cause an instantaneous relative rotation or very short of the second mobile 14 relative to the first mobile 8, and be in the position shown on the figures 12, 12a .
  • the first mobile 8 keeps a position almost identical to the previous position.
  • the third wheel 30 pivoted by 90° under the discharge of the spring 36 of the jumper 34. In its rotation, the third wheel 30 drove the second mobile 14 in rotation in the clockwise direction, the gears being dimensioned to drive a shift of one repositioning angle of 20° (360/2*9).
  • the moon phases are represented at different times of their display period in window 6, for example the figure 13a shows the full moon h at the start of its display period, the figure 13c shows the last quarter g in the middle of its display period, and the figure 13e shows the last crescent f at the end of its display period.
  • the other phase profiles of moon are represented in dotted lines for a better understanding of the invention, but in reality, they are not visible to a user, the nocturnal backgrounds 10 and 16 of the first and second mobiles 8, 14 merging, as explained below above.
  • the drive device comprises a driving mobile 40 mounted on the first mobile 8' which is driven by the motor cog, said driving mobile 40 comprising a drive wheel 42 arranged to cooperate with the second mobile 14', and a Maltese cross 44, said driving mobile 40 being arranged to be immobile in rotation relative to said first mobile 8' for the synchronized driving of the first and second mobile 8', 14' via the drive wheel 42 during the period d 'display, and to be driven in rotation relative to said first mobile 8' in order to instantly pivot the drive wheel 42 so that it drives the second mobile 14' in relative rotation from the repositioning angle during the transitional period.
  • the first mobile 8' comprises a nocturnal background 10' and two symmetrically opposed lunar background portions 12', in a manner similar to the embodiment previously described.
  • the first mobile 8' comprises on its outer periphery an internal toothing 46 arranged to cooperate with the motor gear (not shown) so as to drive the first mobile 8'. This configuration advantageously allows the motor cog to be positioned under the mechanism.
  • the first mobile 8' carries the driving mobile 40, which comprises the driving wheel 42 in the form of a toothed pinion, and the Maltese cross 44, integral with the driving wheel 42.
  • said driving mobile 40 rotates with the first mobile 8', like a satellite, around the center of the mechanism.
  • the driving mobile 40 is pivotally mounted, for example in a bearing 48 pierced in the board of the first mobile 8'.
  • the Maltese cross 44 is positioned under the board of the first mobile 8' so as to be able to cooperate with elements of the frame, as described below, and the drive wheel 42 is positioned above the board of the first mobile 8' so as to be able to cooperate with the second mobile 14'.
  • the second mobile 14' comprises a night background 16' and moon phase profiles 18' in a manner similar to the embodiment previously described.
  • the second mobile 14' is provided, on its inner periphery, with teeth 50 arranged to cooperate with the drive wheel 42.
  • first exterior cam profile 54 and a second interior cam profile 56 arranged coaxially at the centers C and C' of the first and second mobiles 8', 14', so that said first and second cam profiles 54, 56 cooperate with the edges of the Maltese cross 44, with the exception of two projecting sectors 54' arranged symmetrically with respect to the central axis on the outer cam profile 54 and two sectors in hollow 56' arranged symmetrically with respect to the central axis on the internal cam profile 56.
  • the projecting sectors 54' and recessed sectors 56' are dimensioned to allow the rotation of the Maltese cross 44.
  • the projecting sector 54 ' of the exterior cam profile 54 is substantially offset relative to the recessed sector 56' of the interior cam profile 56 facing each other, so that the projecting sector 54' still blocks the rotation of the Maltese cross 44 then that the hollow sector 56' opposite would authorize the rotation of said Maltese cross 44.
  • each rocker 58 is also provided, pivotally mounted under the frame around a shaft coaxial with the central axis.
  • each rocker 58 comprises an opening 60 of oblong shape arranged to be arranged around said shaft so that each rocker 58 is free to deviate from the central axis.
  • Each rocker 58 is in contact with a return spring 62 mounted under the frame.
  • Each rocker 58 has at its free end a tenon or a pin 64 directed towards the Maltese cross 44 and arranged to pass through the frame by "banana" grooves 66 pierced in said frame in the space between the two cam profiles 54 and 56, this in order to be able to be placed at the bottom of a groove of the Maltese Cross 44 when the rocker 58 which carries it deviates from the central axis.
  • the flip-flops 58 are arranged symmetrically one from the other relative to said central axis, the instantaneous jump of the Maltese cross taking place every 180° of rotation of the first mobile 8', as will be explained below.
  • the pin 64 can be fixed directly to the end of a arm of the return spring, the rocker being removed.
  • the spiral shape of the return spring allows an X and Y offset of the pin.
  • the moon phase profile 18' corresponding to the full moon is located towards the right of the display window (not shown) indicating the end of the display period of said full moon.
  • the second mobile 14' is integral in rotation with the first mobile 8' via the driving mobile 40.
  • the Maltese cross 44 is blocked in its orientation by the first profile of outer cam 54 and by the second inner cam profile 56 provided on the frame 52, as shown more specifically in figure 16b .
  • the first mobile 8' being driven in a clockwise direction by the motor train through its teeth 46, said first and second mobile wheels 8', 14' are driven in a synchronized manner, at the same speed and in the same direction, via the wheel 'drive 42 engaged with the teeth 50 of the second mobile 14' and secured to the Maltese cross 44 on board the first mobile 8'.
  • the moon phase therefore moves in the window from left to right, as described above for the first embodiment, the first and second mobiles 8', 14' approaching one of the rockers 58.
  • the return spring 62 is preloaded to position the rocker 58 and its pin 64 at the bottom of its banana groove 66.
  • the phase profile 18' of the second mobile 14' corresponding to the full moon has moved forward to find itself hidden under the aperture.
  • the Maltese cross 44 has moved forward with the first mobile 8' so that the return spring 62 and the pin 64 are in maximum extension.
  • the Maltese cross 44 is positioned at the level of the recessed sector 56' of the interior cam profile 56 so that it is no longer retained by said interior cam profile 56, but remains blocked in rotation on itself just barely. retained by the external cam profile 54, at the edge of its projecting sector 54', ready for jumping.
  • the Maltese cross 44 continues to advance with the first mobile 8' so that it is positioned at the level of the projecting sector 54' of the external cam profile 54, and is therefore free to pivot on it. -even. Under the effect of the spring 62 which suddenly discharges, the pin 64 rises towards its equilibrium position causing a rotation of the Maltese cross 44 on itself by 90° relative to the first mobile 8', as shown in the figures 19, 19a, and 19b . This rotation of the Maltese cross 44 pivots the drive wheel 42 secured to said Maltese cross 44, causing a relative rotation of the second mobile 14' in the clockwise direction by a repositioning angle of 20° via its teeth 50 .
  • the drive device can be a differential, comprising an input wheel meshing with the first mobile 8, an output wheel meshing with the second mobile 14, and a second input arranged to achieve the shift between mobiles 8 and 14 during a transitional period.
  • first and second mobiles can have other configurations than the examples given above, the number of portions of lunar background, moon phase profiles and moon phases to display being able to vary.
  • the mechanism of the invention can be adapted so that the relative rotation of the second mobile in order to shift it from the repositioning angle during the transitional period is done in the counterclockwise direction.

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

Claims (19)

  1. Anzeigemechanismus von n Mondphasen für eine Uhr, wo n eine ganze Zahl gleich 3 oder mehr ist, umfassend ein erstes Drehteil (8, 8'), das mit einer ersten Zahnung (8b) versehen ist und aufweisend einen Nachthintergrund (10, 10') und mindestens ein Mondhintergrundteil (12, 12'), und ein zweites Drehteil (14, 14'), das mit einer zweiten Zahnung (14b) versehen ist und über dem ersten Drehteil (8, 8') gelagert ist, wobei das besagte zweite Drehteil (14, 14') einen Nachthintergrund (16, 16') und n Profile von Mondphasen (18, 18') aufweist, wobei das erste (8, 8') und zweite (14, 14') Drehteil um die gleiche Achse gedreht werden, wobei der besagte Anzeigemechanismus so ausgelegt ist, dass das erste (8, 8') Drehteil mit einer gleichbleibenden Geschwindigkeit gedreht werden kann und das zweite Drehteil (14, 14') mit einer gleichen Winkelgeschwindigkeit und in die gleiche Richtung wie das erste Drehteil (8, 8') gedreht werden kann, während einer Anzeigeperiode einer Mondphase, während der ein Mondhintergrundteil (12, 12') des ersten Drehteils (8, 8') und ein Mondphasenprofil (18, 18') des zweiten Drehteils (14, 14'), das der anzuzeigenden Mondphase entspricht, übereinander gelagert sind, um die besagte Mondphase zu offenbaren, und dergestalt, dass das zweite Drehteil (14, 14') bezogen auf das erste Drehteil (8, 8') während einer Übergangsperiode zwischen der aktuellen Anzeigeperiode und der nachfolgenden Anzeigeperiode um einen Neupositionierungswinkel verschoben wird, um die nachfolgende Mondphase zu offenbaren.
  2. Anzeigemechanismus nach Anspruch 1, dadurch gekennzeichnet, dass n ungerade ist.
  3. Anzeigemechanismus nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass er ein Zifferblatt (2) umfasst, das ein Anzeigefenster (6) von gewählten Abmessungen aufweist, um die Bewegung einer Mondphase während mindestens eines Abschnitts ihrer Anzeigeperiode sichtbar zu machen.
  4. Anzeigemechanismus nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass das Anzeigefenster (6) gewählte Abmessungen hat, um in dem besagten Anzeigefenster (6) zu jedem Zeitpunkt höchstens eine Mondphase anzuzeigen.
  5. Anzeigemechanismus nach einem der Ansprüche 3 und 4, dadurch gekennzeichnet, dass das besagte Anzeigefenster (6) gewählte Abmessungen hat, damit die übrige Oberfläche des Zifferblatts (2) die Verschiebung zwischen dem ersten (8, 8') und zweiten (14, 14') Drehteil während der Übergangsperiode überdeckt.
  6. Anzeigemechanismus nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das erste Drehteil (8, 8') x Mondhintergrundteile (12, 12') aufweist, wobei x 1 oder mehr beträgt und kleiner n ist, wobei die besagten x Mondhintergrundteile (12, 12') gleichmässig auf dem ersten Drehteil (8, 8') verteilt sind.
  7. Anzeigemechanismus nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das erste Drehteil (8, 8') so ausgelegt ist, um von einem Motorräderwerk angetrieben zu werden und um mit einer Antriebsvorrichtung (20) zusammenzuwirken, wobei die besagte Antriebsvorrichtung (20) so ausgelegt ist, um das zweite Drehteil (14, 14') während der Anzeigeperiode einer Mondphase synchronisiert anzutreiben und um es in relative Drehung zu versetzen, um es während einer Übergangsperiode um den besagten Neupositionierungswinkel zu verschieben.
  8. Anzeigemechanismus nach Anspruch 7, dadurch gekennzeichnet, dass die Mondphasenprofile (18, 18') des zweiten Drehteils (14, 14') entsprechend der gewählten Richtung der relativen Drehung des zweiten Drehteils (14, 14') in Bezug zueinander positioniert sind, sodass die nachfolgende Mondphase anstelle der aktuellen Mondphase angezeigt wird, wenn das besagte zweite Drehteil (14, 14') in der besagten gewählten Drehrichtung von der Antriebsvorrichtung (20) in relativer Drehung angetrieben wird.
  9. Anzeigemechanismus nach einem der Ansprüche 7 bis 8, dadurch gekennzeichnet, dass die Antriebsvorrichtung (20) einen Energiespeicher umfasst, der so ausgebildet ist, um von dem ersten Drehteil (8), das von dem Motorräderwerk angetrieben wird, angetrieben zu werden, und so ausgebildet, um das zweite Drehteil (14) unter der Einwirkung des besagten Energiespeichers weiterspringen zu lassen.
  10. Anzeigemechanismus nach Anspruch 9, dadurch gekennzeichnet, dass der Energiespeicher drei koaxial übereinanderliegende Räder aufweist, und zwar ein erstes Rad (22), das ausgebildet ist, um von dem ersten Drehteil (8) angetrieben zu werden, wobei das besagte erste Rad (22) fest mit einer Kurvenscheibe (24) verbunden ist, ein zweites Rad (26), das ausgebildet ist, um von dem besagten ersten Drehteil (8) mit einer höheren Geschwindigkeit als das erste Rad (22) angetrieben zu werden, wobei das besagte zweite Rad (26) einen Stift (28) trägt, und ein drittes Rad (30), das ausgebildet ist, um das zweite Drehteil (14) anzutreiben, wobei das besagte dritte Rad (30) eine Kehle (32) umfasst, in welche der Stift (28) des zweiten Rads (26) eingreift, und eine Raste (34) trägt, die mit einer Sperrfeder (36) versehen ist, wobei die besagte Raste (34) ausgebildet ist, um mit der Kurvenscheibe (24) des ersten Rads (22) zusammenzuwirken, um das dritte Rad (30) drehfest mit dem ersten Rad (22) für einen synchronisierten Antrieb des ersten (8) und zweiten (14) Drehteils zu verbinden, solange der Stift (28) des zweiten Rads (26) nicht in der Kehle (32) des dritten Rads (30) anliegt, und um Energie zwischenzuspeichern, wenn der in der Kehle (32) des dritten Rads (30) anliegende Stift (28) des zweiten Rads (26) das dritte Rad (30) drehfest mit dem zweiten Rad (26) verbindet, und anschliessend die besagte Energie auf einmal zurückzugeben, um das dritte Rad (30) herumzudrehen, damit es das zweite Drehteil (14) um den Neupositionierungswinkel in relative Drehung versetzt.
  11. Anzeigemechanismus nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass die Antriebsvorrichtung ein Mitnehmer-Drehteil (40) umfasst, das auf dem ersten Drehteil (8') integriert ist, wobei das besagte Mitnehmer-Drehteil (40) ein Antriebsrad (42) aufweist, das ausgelegt ist, um mit dem zweiten Drehteil (14') zusammenzuwirken, und ein Malteserkreuz (44), wobei das besagte Mitnehmer-Drehteil (40) so ausgebildet ist, um bezogen auf das besagte erste Drehteil (8'), das für den synchronisierten Antrieb des ersten (8') und zweiten (14') Drehteils über das Antriebsrad (42) während der Anzeigeperiode von dem Motorräderwerk angetrieben wird, unverdrehbar zu sein, und um bezogen auf das besagte erste Drehteil (8') in Drehung versetzt zu werden, um das Antriebsrad (42) herumzudrehen, damit es während der Übergangsperiode das zweite Drehteil (14') um den Neupositionierungswinkel in relative Drehung versetzt.
  12. Anzeigemechanismus nach einem der Ansprüche 3 bis 11, dadurch gekennzeichnet, dass das Anzeigefenster (6) eine im Wesentlichen ringförmige Form aufweist, deren radiale Ränder (6a, 6b) eine Horizontallinie bilden.
  13. Anzeigemechanismus nach Anspruch 12, dadurch gekennzeichnet, dass das erste (8, 8') und zweite (14, 14') Drehteil im Uhrzeigersinn drehbar sind, um die Verschiebung einer Mondphase zwischen ihrem Aufgang und ihrem Untergang am Horizont darzustellen.
  14. Anzeigemechanismus nach einem der Ansprüche 12 bis 13, dadurch gekennzeichnet, dass mindestens einer der radialen Ränder (6a, 6b) des Anzeigefensters (6) eine gewählte Form aufweist, um das Profil eines Gebirges, eines Denkmals oder einer Stadt darzustellen.
  15. Anzeigemechanismus nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Mondphasenprofile (18, 18') des zweiten Drehteils (14, 14') ein Profil aufweisen, das von der Tag-Nacht-Grenze (18a), die einer Mondphase entspricht, und dem Kreisbogen (18b) des Aussenrands des Monds definiert wird.
  16. Anzeigemechanismus nach Anspruch 15, dadurch gekennzeichnet, dass der Rand des Mondphasenprofils (18, 18'), der der Tag-Nacht-Grenze (18a) entspricht, Reliefs aufweist, die Einzelheiten des Mondes veranschaulichen.
  17. Anzeigemechanismus nach einem der Ansprüche 7 bis 16, dadurch gekennzeichnet, dass das erste Drehteil (8, 8') zwei symmetrisch gegenüberliegende Mondhintergrundteile (12, 12') umfasst und so ausgelegt ist, um von dem Motorräderwerk mit einer Geschwindigkeit von n Halbumdrehungen pro Lunation angetrieben zu werden, und dadurch, dass die Antriebsvorrichtung so ausgelegt ist, um das zweite Drehteil (14, 14') während der Anzeigeperiode einer Mondphase synchron anzutreiben und um es in relative Drehung zu versetzen, um es während einer Übergangsperiode um den besagten Neupositionierungswinkel zu verschieben.
  18. Anzeigemechanismus nach Anspruch 17, dadurch gekennzeichnet, dass n gleich 9 ist, dadurch, dass das erste Drehteil (8, 8') zwei symmetrisch gegenüberliegende Mondhintergrundteile (12, 12') umfasst und so ausgebildet ist, um von dem Motorräderwerk im Uhrzeigersinn mit einer Geschwindigkeit von 9 Halbumdrehungen pro Lunation angetrieben zu werden, wobei das zweite Drehteil (14, 14') ausgebildet ist, um während der Übergangsperiode zwischen der Anzeigeperiode einer Mondphase und der Anzeigeperiode der nachfolgenden Mondphase im Uhrzeigersinn um einen Neupositionierungswinkel von 20° verschoben zu werden, wobei die Anzeigeperiode einer Mondphase ungefähr 3,28 Tage beträgt, wobei das Anzeigefenster (6) sich über einen Winkel von ungefähr 140° erstreckt, und die Mondphasenprofile (18, 18') auf dem zweiten Drehteil (14, 14') in der Reihenfolge im Uhrzeigersinn angeordnet sind, zunehmender Sichelmond, abnehmender Mond, drittes Viertel, zweites Viertel, zunehmender Mond, abnehmender Sichelmond, letztes Viertel, Vollmond, erstes Viertel.
  19. Uhr, die einen Anzeigemechanismus nach einem der Ansprüche 1 bis 18 umfasst.
EP21206648.4A 2020-11-30 2021-11-05 Mondphasen-anzeigemechanismus Active EP4006651B1 (de)

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