EP4254079A1 - Mecanisme d'affichage des phases de lune de piece d'horlogerie - Google Patents

Mecanisme d'affichage des phases de lune de piece d'horlogerie Download PDF

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Publication number
EP4254079A1
EP4254079A1 EP22164771.2A EP22164771A EP4254079A1 EP 4254079 A1 EP4254079 A1 EP 4254079A1 EP 22164771 A EP22164771 A EP 22164771A EP 4254079 A1 EP4254079 A1 EP 4254079A1
Authority
EP
European Patent Office
Prior art keywords
phase
moon
moon phase
drive
display mechanism
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
EP22164771.2A
Other languages
German (de)
English (en)
French (fr)
Inventor
Cédric Reymond
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.)
Blancpain SA
Original Assignee
Blancpain 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 Blancpain SA filed Critical Blancpain SA
Priority to EP22164771.2A priority Critical patent/EP4254079A1/fr
Priority to US18/182,424 priority patent/US20230305495A1/en
Priority to KR1020230038155A priority patent/KR20230139793A/ko
Priority to JP2023047698A priority patent/JP2023145392A/ja
Priority to CN202320648303.9U priority patent/CN220020113U/zh
Priority to CN202320646445.1U priority patent/CN220020112U/zh
Priority to CN202320645324.5U priority patent/CN219978705U/zh
Priority to CN202320644204.3U priority patent/CN220020111U/zh
Priority to CN202310316986.2A priority patent/CN116819927A/zh
Publication of EP4254079A1 publication Critical patent/EP4254079A1/fr
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
    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • 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

Definitions

  • the field of the invention relates to mechanisms for displaying the moon phases of timepieces making it possible to display information relating to the state of the moon during a complete lunar period.
  • the invention also relates to a watch movement comprising such a moon phase display mechanism.
  • the invention also relates to a timepiece, for example a wristwatch, comprising a watch movement comprising such a moon phase display mechanism.
  • the moon phase display mechanisms make it possible to display information relating to the state of the moon during a lunation period.
  • This theoretical lunation period is precisely 29 days, 12 hours, 44 minutes and 2.8 seconds.
  • the most common moon phase display mechanisms are mechanisms having a jumping drive of a 59-tooth star carrying a disc comprising two representations of the moon, part of this disc being visible to the user through a opening of suitable shape and provided in the dial of the watch and successively revealing the different phases of the moon: a waxing moon, a full moon, a waning moon and a new moon.
  • the 59-tooth star is driven once a day by a 24-hour wheel.
  • Such a moon phase display mechanism makes it possible to obtain a period of 29.5 days per displayed lunation, which makes it possible to obtain an approximate result with a reliable, space-saving and inexpensive mechanism.
  • such a mechanism accumulates an error at each lunation which must be compensated for every 2.65 years by a correction device.
  • Trailing type moon phase display mechanisms have the advantage of allowing a more precise real-time display of the state of the moon over a day in relation to the lunar body. Indeed, with this type of mechanism, the moon is driven throughout the day, unlike a jumping type display mechanism where the moon disk is driven by jumping once per day.
  • the invention proposes a jumping type moon phase display mechanism having an improved display resolution compared to the moon phase display mechanisms of the state of the art, allowing the mechanisms to display of the jumping type moon phases to reduce this “display error”, to be more faithful to reality and to get closer to the state of the lunar body without complicating the display mechanism and by doing away with an expensive, bulky, dragging type display mechanism that is complex to produce and implement.
  • the invention also relates to a clock movement comprising a moon phase display mechanism according to the invention.
  • the clock movement comprises a timer mobile, an hour wheel, and a minute center pinion, said moon phase display mechanism comprising a cam comprising a high zone forming a drive finger, said cam being driven by the rotation of the hour wheel.
  • the cam is positioned coaxially with the hour wheel and mounted to rotate freely relative to the hour wheel.
  • the cam comprises an indexing element extending in the direction of the hour wheel and in that the hour wheel has a slot configured to receive the indexing element, said slot forming stops limiting the relative rotation of the cam opposite the hour wheel.
  • the invention also relates to a timepiece comprising a moon phase display mechanism according to the invention or comprising a clock movement according to the invention.
  • the timepiece is a wristwatch.
  • the present invention consists of the general idea of splitting the daily training step of the moon phase indicator of a moon phase display mechanism, of the jumping type, to improve the display resolution of the moon phase indicator. moon phase indicator and get as close as possible to the real state of the lunar body during the day.
  • the term “daily step” means the daily angular step taken by a moon phase indicator in function. of the lunar period approximated by the moon phase display mechanism.
  • FIG. 1 illustrates a perspective view of an exemplary embodiment of a moon phase display mechanism 100 according to the invention.
  • FIG 2 illustrates a top view of the exemplary embodiment of the moon phase display mechanism 100 illustrated in figure 1
  • FIG 3 illustrates a bottom view of this same embodiment.
  • the moon phase display mechanism 100 is a jumping type display mechanism, that is to say that the moon phase indicator carrying the representations of the moon is not in position. permanent constraint with the cog of a clockwork movement.
  • a jumping type display mechanism that is to say that the moon phase indicator carrying the representations of the moon is not in position. permanent constraint with the cog of a clockwork movement.
  • the moon phase display mechanism 100 is intended to be housed in a timepiece, for example a case of a wristwatch (not shown).
  • the moon phase display mechanism 100 is driven by a clock movement 200, partially represented on the figures 1 to 3 , that is to say a mechanism whose functioning depends on the division of time.
  • the clock movement 200 comprises in particular a timer mobile 210 comprising a timer pinion 211 and a timer wheel 212.
  • the timer pinion 211 drives an hour wheel 220, and the assembly is configured so that the hour wheel 220 makes a complete revolution in 12 hours.
  • the hour wheel 220 is at the center of the clock movement 200, and therefore forms the center wheel.
  • the hour wheel 220 includes a cylindrical zone 222 carrying an hour hand (not shown).
  • a minute hand (not shown) is carried by a carriageway 231 of a minute center pinion 230 mounted coaxially with the hour wheel 220.
  • the minute center pinion 230 meshes with the timer mobile 210, and more particularly the timer wheel 212.
  • the moon phase display mechanism 100 comprises a moon phase indicator 110, at least part of which is intended to be visible to the user through an opening of suitable shape and provided in a dial of the timepiece (not shown), so as to successively reveal the different phases of the moon: a waxing moon, a full moon, a waning moon and a new moon.
  • the moon phase indicator 110 is set in motion by a jumping drive mechanism 120 driven at regular intervals by the clockwork 100 and/or by a user via a rapid correction device 300.
  • the moon phase indicator 110 carries at least one representation of the moon.
  • the moon phase indicator 110 has two representations of the moon.
  • the moon phase indicator 110 is formed by an upper disc 111 carrying the two representations of the moon.
  • the upper disk 111 is mounted integral with a phase wheel 112 comprising a plurality of teeth.
  • the jumping drive mechanism 120 comprises a phase drive element directly driven by the rotation of the hour wheel 220.
  • the phase drive element cooperates with a phase rocker 130 which is pivotally mounted around a pivot axis 2.
  • the phase rocker 130 pivots under the action of the drive element phases so as to interact with the moon phase indicator 110 and cause it to rotate each time the phase rocker 130 tilts.
  • the phase drive element is formed by a cam 121 driven directly by the clock movement 200. More particularly, the cam 121 is driven in rotation directly by the hour wheel 220 and is mounted coaxially with the hour wheel 220 hours.
  • the cam 121 is inserted between the hour wheel 220 and the center pinion 230; however other arrangements are also envisaged.
  • FIG. 4 illustrates more particularly the cam 121, acting as a phase drive element, mounted coaxially with the hour wheel 220 and the center pinion 230.
  • the hour wheel 220 is not shown in order to better visualize the cam 121 and its interaction with the phase rocker 130.
  • the cam 121 is mounted to rotate freely around the axis of rotation 6 of the hour wheel 220.
  • the cam 121 delimits an external profile 123 constituting a probing profile configured to interact with the phase rocker 130.
  • the external profile 123 comprises a high probing zone which is radially the zone furthest from the axis of rotation 6 of the hour wheel 220. This upper sensing zone forms a drive finger 124 configured to come into contact with the phase rocker 130 and to tilt it during the rotation of the cam 121.
  • the cam 121 comprises a pin 125, or other indexing element, projecting relative to the upper surface of the cam 121, so that the pin 125 extends in direction of the hour wheel 220 located above the cam 121, so as to cooperate with the hour wheel 220.
  • the pin 125 is configured to insert and cooperate with a slot 221 provided at the body of the hour wheel 220.
  • the slot 221 defined by its shape of the stops makes it possible to limit the relative rotation of the cam 121 relative to the hour wheel 220.
  • the hour wheel 220 causes cam 121 to rotate.
  • the relative rotation of the cam 121 relative to the hour wheel 220 makes it possible in particular to avoid constraining the hour wheel 220 when the phase rocker 130 returns to its rest position under the elastic force of elastic means 150.
  • the cam 121 is a 12 o'clock cam since it has a single driving finger and makes a complete rotation in 12 hours in the same way as the rotation of the hour wheel 220.
  • the phase rocker 130 is pivotally mounted around a pivot axis 2 and is switched between a rest position and an activation position by the passage of the drive finger 124 of the cam 121.
  • the phase rocker 130 comprises a first arm 131 having at its end a feeler 132 configured to cooperate with the driving finger(s) 124 of the cam 121. More particularly, the phase rocker 130 rocks at each passage of a driving finger during the rotation of the cam 121 driven by the hour wheel 220.
  • the phase rocker 130 further comprises a second arm 133 which has at its end a correction nozzle 134 configured to rotate the moon phase indicator 110 each time the phase rocker 130 tilts.
  • phase rocker 130 cooperates with elastic return means 150, for example a return spring, tending to position the phase rocker 130 in the rest position between each tilt.
  • elastic return means 150 for example a return spring
  • phase rocker 130 is repositioned against a positioning stop (not shown) making it possible to define the rest position of the phase rocker 130.
  • a positioning stop makes it possible, for example, to avoid permanent contact of the probe 132 on the external profile 123 of the cam 121. Thus, contact between the different parts is minimized and wear of the parts is reduced.
  • the operation of the moon phase display mechanism 100 according to the invention is as follows: the hour wheel 220 turns clockwise, conventionally driven by the timer wheel 210.
  • the drive finger 124 of the cam 121 constrained by the rotation of the hour wheel 220, via the pin 125 and the light 221, comes into contact with the feeler 132 of the rocker phases 130.
  • the shapes and geometries of the drive finger 124 of the cam 121 and of the feeler 132 of the phase rocker 130 are configured to ensure the pivoting of the phase rocker 130 during the rotation of the cam 121 until to its activation position, making it possible to increment and angularly shift the moon phase indicator 110.
  • the moon phase display mechanism 100 is configured so that the jumping drive mechanism 120 rotates the moon phase indicator 110 by n increments per day, n being greater than 1, each increment rotating the moon phase indicator 110 by an angle ⁇ corresponding to the angle of rotation of a daily step divided by the number n of increments.
  • the moon phase indicator 110 is incremented twice per day instead of only once per day as for the jumping type display mechanisms of the state of the art.
  • the different gears are sized so that the overall rotation of the moon phase indicator 110 over a day remains identical to the daily step of a conventional moon phase indicator set in motion by a drive mechanism jumping from the state of technology.
  • the moon phase indicator 110 will be set in motion twice a day (every 12 hours) of an angle ⁇ of 3.05° to arrive at a daily step corresponding to a rotation of 6.1°.
  • the cam 121 may include two drive fingers 124 opposite each other (that is to say opposite 180°), so that the phase rocker 130 is tilted twice per revolution of the hour wheel 220, or four times a day.
  • the different gears are dimensioned so that each increment of the moon phase indicator 110, occurring here every six hours, corresponds to a rotation of an angle ⁇ of 1.525° of the moon phase indicator 110 of so as to preserve an overall rotation of 6.1° per day corresponding to the daily step.
  • Such a variant makes it possible to further improve the accuracy of displaying the state of the moon over a day in relation to the lunar body, although the daily step is still 6.1°.
  • the hour rocker 130 does not cooperate directly with the phase wheel 112.
  • the jumping drive mechanism 120 comprises an intermediate phase drive mobile 140 located between the phase rocker 130 and the phase indicator moon 110, and more particularly the phase wheel 112.
  • phase rocker 130 directly drives the phase wheel 112, without the use of an intermediate phase drive mobile.
  • the intermediate phase drive mobile 140 comprises a phase drive star 141 integral in rotation with a phase drive pinion 142 meshing with the phase wheel 112 of the moon phase indicator 110 .
  • the phase drive star 141 cooperates with a jumper 160 configured to hold the phase drive star 141 in position between each jump (or increment) of the phase drive star 141 operated by the rocker of the phases. phases 130.
  • the jumper 160 is movable around a pivot axis 4 and conventionally cooperates with an elastic means 161 tending to position the jumper 161 between two teeth of the phase drive star 141, once the high point of a tooth has passed under the action of the phase rocker 130.
  • the jumper 160 does not act directly on the phase wheel 112 but on the intermediate phase drive mobile 140, and more particularly on the phase drive star 141.
  • the use of such an architecture allows in particular to be able to absorb the inertia of a large moon phase indicator 110.
  • the moon phase display mechanism 100 further comprises an independent rapid correction device 300 making it possible to correct if necessary the position of the moon phase indicator 110, for example after a prolonged cessation of the movement of the moon phase. watchmaking 200.
  • the rapid correction device 300 comprises a correction star 330 carried by the intermediate phase drive mobile 140, and integral in rotation with the phase drive pinion 142, so that an action on the correction star 330 generates a rotation of the moon phase indicator 110.
  • the rapid correction device 300 further comprises a phase correction control 315 which can be manipulated by a user via a pusher, or an actuation pad 316.
  • the phase correction control 315 is pivotally mounted around a pivot axis 5 .
  • the phase correction control 315 cooperates with an intermediate phase correction rocker 320 pivotally mounted around a pivot axis 3.
  • the intermediate phase correction rocker 320 comprises a correction nose 321 intended to cooperate with a tooth of the correction star 330 when requesting the phase correction command 315 by the user.
  • the rapid correction device 300 comprises an elastic means 310 configured to reposition the phase correction control 315 and the intermediate phase correction rocker 320 in neutral rest positions when the user does not exert any action on the control phase correction 315.
  • the elastic means 310 rests on the intermediate phase correction rocker 320. However, the elastic means 310 can rest on the phase correction control 315.
  • the phase correction command 315 can act directly on the phase correction star 330, so that it is possible to eliminate the intermediate phase correction flip-flop 320.
  • the moon phase indicator 110 is incremented twice per day by an angle of 3.05° so as to achieve a daily rotation of 6.1°.
  • the correction star 330 advantageously has half as many teeth as the phase drive star 140, since the latter is incremented twice per day.
  • the rapid correction device 300 makes it possible to carry out corrections equivalent to one day of training (not daily).
  • Such a configuration advantageously makes it possible not to modify the habits of the wearer who is used to carrying out a one-day correction each time the correction command is requested.
  • the correction star 330 can have two different indexing positions depending on the position of the phase drive star 141 relative to its jumper 160.
  • the distance between a tooth of the correction star 330 and the correction nozzle is different, and therefore the action of the correction nose of the intermediate rocker is different depending on the indexing position of the correction star 330.
  • actuation of the correction command 315 can advance the correction star 330 d 'a complete daily step (here a rotation of 6.1°), at each request of the correction command 315, or first of a half daily step, i.e. a rotation of 3.05° (in the case of two indexings per day of the phase drive star 141 and if the first indexing in the first twelve hours of the day is carried out), then a complete daily step (rotation of 6.1°) each time the correction command 315 is requested.
  • a complete daily step here a rotation of 6.1°
  • the moon phase display mechanism 100 further comprises a safety device 180 making it possible to disengage the jumping drive mechanism 120 during a rapid correction by the user, via the rapid correction device 300 which acts on the same intermediate phase drive mobile 140.
  • the safety device 180 makes it possible to disengage the jumping drive mechanism 120 when a rapid correction action occurs simultaneously with the drive of the moon phase indicator 110 by the rocker phases 130.
  • the safety device 180 is formed by a pawl provided on the phase rocker 130.
  • the pawl is provided at the level of the second arm 132 so that the correction nose 134, cooperating with the intermediate phase driving mobile 140, is located at the end of an elastic strand 181 capable of disengaging when a correction action is initiated by the user via the rapid correction device 300 causing a rotation of the intermediate phase drive mobile 140.
  • the elasticity of the elastic strand 181 makes it possible to release the correction nozzle from its engagement with the phase drive star 141 and to allow rotation of the intermediate phase drive mobile 140 without risk of breakage or degradation of the jumping drive mechanism 120.
  • the cam forming the phase drive element is coaxial with the hour wheel 220.
  • the cam forming the phase drive element is coaxial with the hour wheel 220.
  • other examples of embodiment are possible.
  • the cam forming the phase drive element can be carried by an intermediate wheel meshed directly with the hour wheel 220.
  • the intermediate wheel can be configured to have a ratio of 1 with the hour wheel 220 or even a ratio other than 1.
  • the ratio between the hour wheel 220 and the intermediate wheel it is possible to increase the display resolution of the moon phase indicator 110 over a day as described previously, i.e. say increase the number of increments of the moon phase indicator 110 while reducing the angular jump of each increment to respect the overall rotation over a day corresponding to the daily angular step corresponding to the lunation period of the display mechanism of the moon phases 100.
  • the intermediate wheel completes one revolution in 6 hours, or two revolutions in 12 hours.
  • a cam having a single driving finger it is possible to divide the daily angular step of the moon phase indicator 110 into four increments distributed throughout the day, i.e. every 6 hours.
  • the gear ratios between the phase wheel 112, the drive pinion phases 142, and the phase drive star 141 will be adapted to divide the daily overall rotation of the moon phase indicator 110 corresponding to the daily step according to the number of desired increments.
  • the phase driving element can be formed by several superimposed cams interacting in phase rockers positioned on different levels of the mechanism, in order to multiply the increments of the moon phase indicator 110 on a day.
  • the invention also relates to a clock movement 200 comprising a moon phase display mechanism 100 according to the invention.
  • the invention also relates to a timepiece, such as a wristwatch, comprising a timepiece movement 200 according to the invention.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Electromechanical Clocks (AREA)
EP22164771.2A 2022-03-28 2022-03-28 Mecanisme d'affichage des phases de lune de piece d'horlogerie Pending EP4254079A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP22164771.2A EP4254079A1 (fr) 2022-03-28 2022-03-28 Mecanisme d'affichage des phases de lune de piece d'horlogerie
US18/182,424 US20230305495A1 (en) 2022-03-28 2023-03-13 Moon phase display mechanism of a timepiece
KR1020230038155A KR20230139793A (ko) 2022-03-28 2023-03-23 타임피스의 문 페이즈 디스플레이 메커니즘
JP2023047698A JP2023145392A (ja) 2022-03-28 2023-03-24 計時器の月相表示機構
CN202320648303.9U CN220020113U (zh) 2022-03-28 2023-03-28 用于时计的月相显示机构，钟表机芯及时计
CN202320646445.1U CN220020112U (zh) 2022-03-28 2023-03-28 用于时计的月相显示机构，钟表机芯及时计
CN202320645324.5U CN219978705U (zh) 2022-03-28 2023-03-28 包括月相显示机构的钟表机芯和包括此类钟表机芯的时计
CN202320644204.3U CN220020111U (zh) 2022-03-28 2023-03-28 用于时计的月相显示机构，钟表机芯及时计
CN202310316986.2A CN116819927A (zh) 2022-03-28 2023-03-28 时计的月相显示机构

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22164771.2A EP4254079A1 (fr) 2022-03-28 2022-03-28 Mecanisme d'affichage des phases de lune de piece d'horlogerie

Publications (1)

Publication Number Publication Date
EP4254079A1 true EP4254079A1 (fr) 2023-10-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22164771.2A Pending EP4254079A1 (fr) 2022-03-28 2022-03-28 Mecanisme d'affichage des phases de lune de piece d'horlogerie

Country Status (5)

Country Link
US (1) US20230305495A1 (zh)
EP (1) EP4254079A1 (zh)
JP (1) JP2023145392A (zh)
KR (1) KR20230139793A (zh)
CN (5) CN220020111U (zh)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704745B1 (fr) * 2008-03-25 2012-10-15 Maurice Lacroix Sa Pièce d'horlogerie comportant un mécanisme d'affichage des phases de lune.
EP2728420A1 (fr) * 2012-11-06 2014-05-07 Montres Breguet SA Montre astronomique

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704745B1 (fr) * 2008-03-25 2012-10-15 Maurice Lacroix Sa Pièce d'horlogerie comportant un mécanisme d'affichage des phases de lune.
EP2728420A1 (fr) * 2012-11-06 2014-05-07 Montres Breguet SA Montre astronomique

Also Published As

Publication number Publication date
JP2023145392A (ja) 2023-10-11
CN220020113U (zh) 2023-11-14
CN219978705U (zh) 2023-11-07
CN220020111U (zh) 2023-11-14
US20230305495A1 (en) 2023-09-28
CN220020112U (zh) 2023-11-14
CN116819927A (zh) 2023-09-29
KR20230139793A (ko) 2023-10-05

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