EP3451077A1 - Mecanisme de calendrier pour piece d'horlogerie - Google Patents

Mecanisme de calendrier pour piece d'horlogerie Download PDF

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Publication number
EP3451077A1
EP3451077A1 EP17189339.9A EP17189339A EP3451077A1 EP 3451077 A1 EP3451077 A1 EP 3451077A1 EP 17189339 A EP17189339 A EP 17189339A EP 3451077 A1 EP3451077 A1 EP 3451077A1
Authority
EP
European Patent Office
Prior art keywords
date
month
finger
mechanism according
indicator
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.)
Withdrawn
Application number
EP17189339.9A
Other languages
German (de)
English (en)
French (fr)
Inventor
Cédric Mentzer
Serge Nicollin
Florent Zufferey
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.)
Breitling AG
Original Assignee
Breitling AG
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 Breitling AG filed Critical Breitling AG
Priority to EP17189339.9A priority Critical patent/EP3451077A1/fr
Priority to CN201811024221.7A priority patent/CN109426131A/zh
Publication of EP3451077A1 publication Critical patent/EP3451077A1/fr
Withdrawn legal-status Critical Current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
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
    • G04B19/2536—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement automatically corrected at the end of months having less than 31 days
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25373—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by an energy source which is released at determined moments by the clockwork movement
    • G04B19/2538—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by an energy source which is released at determined moments by the clockwork movement automatically corrected at the end of months having less than 31 days
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped

Definitions

  • the present invention relates to a timing mechanism for a timepiece.
  • the present invention relates to an annual calendar mechanism comprising an annular indicator disk of the date and an annular disk indicator of the month.
  • the patent US 3673789 describes and illustrates to his figure 6 an annual calendar mechanism comprising an annular indicator disk of the date, an annular indicator disc of the month superimposed on the annular disk date indicator and eccentric with respect thereto, a drive wheel driven at a rate of one turn per twenty-four hours by the workings of a watch movement, a finger mounted on the drive wheel and having a sufficient thickness to cooperate with the two indicator discs, and a rocker having a probe.
  • the date indicator disc bears indications "1" to "31” and thirty-one inner teeth respectively corresponding to these indications.
  • One of these teeth, corresponding to the indication "31” has a greater height than the other teeth and the bottom of the teeth that it forms with the adjacent tooth corresponding to the indication "1" is lower than the other funds.
  • the indicator disc of the month bears two consecutive series of twelve indications of the months and twenty-four corresponding inner teeth.
  • the pitch of the teeth of the indicator disc of the month is substantially the same as that of the indicator disc of the date.
  • the indicator disk of the month also serves as a cam and, for this purpose, presents the gear whose height varies depending on the duration, thirty or thirty-one days, of each month.
  • the probe of the rocker is kept in contact with the indicator disc of the month to read the duration of the current month.
  • the beak of the finger comes into contact with the internal toothing of the indicator disk of the date, is guided by a bottom of this toothing, then cooperates with one of the teeth of this toothing to move the indicator disc of the date of a step, while remaining out of contact with the teeth of the indicator disc of the month.
  • the beak of the finger comes into contact with the tooth of the indicator disk of the date which is higher than the others, and pushes it to move a step of said disc while sliding on the flank of this high tooth towards that of the bottom of the teeth which is lower than the others, until reaching a tooth of the indicator disc of the month.
  • the finger then moves one step at a time the date indicator disc and the indicator disc of the month.
  • the indicator disc of the date has been moved two steps while the indicator disc of the month has been moved a step.
  • the flip-flop which palpates the cam of the indicator disk of the month occupies a position such that on the 30th, towards midnight, the finger guided by the rocker passes over the high tooth of the indicator disc of the date without touching it and goes directly to the tooth downstream of this high tooth, being guided by the bottom of the toothing, to cooperate with it and move the date indicator disc one step.
  • the beak of the finger moves towards the bottom of the tooth of the date indicator disc which is lower than the others to reach at the same time a tooth of the indicator disc of the month and the tooth of the indicator disk of the date and, cooperating with them, move one step each of the two disks.
  • the mechanism according to US 3673789 Compared to a classical calendar mechanism, the mechanism according to US 3673789 has the advantage of having relatively few parts. In addition, it does not use a cog and it eliminates the need to precisely orient the wheels of the gear relative to each other so that the operation of the calendar is conducted in the correct sequence.
  • the mechanism according to US 3673789 nevertheless has several disadvantages. Because of significant friction between the finger and the rocker, between the finger and the upper tooth of the date indicator disk and especially between the finger and the tooth surface of the date indicator disc (almost every day), this mechanism consumes a lot of energy .
  • the high tooth prevents the guide of the annular disk indicating the date from the inside, which poses a difficulty when guidance from the outside is not possible due for example to the presence of another disk indicator such as an indicator disc of the days of the week.
  • this mechanism is not designed to work instantly.
  • the present invention also provides a timepiece, such as a wristwatch or a pocket watch, comprising the calendar mechanism defined above.
  • a calendar mechanism for a watch movement comprises an annular disc indicator of the month 1, an annular disc indicator of the date 2 and an annular disc indicator of the day of the week 3.
  • the discs of the date 2 and the day of week 3 are coaxial with the platinum of the movement.
  • the indicator disc of the month 1 is eccentric with respect to the indicator discs of the date 2 and the day of the week 3 and superimposed on the indicator disc of the date 2.
  • the discs 1, 2, 3 are placed under a dial of the watch movement comprising a wicket months 4, a counter date 5 and a window of days 6, and are rotatable around their center.
  • the eccentricity of the indicator discs of the month and the date 1, 2 allows the wickets of the months and date 4, 5 to be located, in plan view, on the same circle concentric with the indicator disc of the date 2.
  • the indicator disk of month 1 comprises (cf. figures 1 and 2 ) an internal toothing 7 and carries on its upper surface two consecutive series of twelve indications or symbols 8 representative of the months, for example the symbol "OCT” for the month of October and the symbol “NOV” for the month of November. These symbols 8 are successively visible through the window of the months 4 as a function of the displacement of the indicator disk of the month 1.
  • the internal toothing 7 comprises twenty-four teeth 7b alternating with twenty-four funds 7a. It is intended to cooperate with a finger of months 9 for driving the indicator disk of the month 1.
  • the funds 7a of the internal toothing 7 are higher or lower depending on the duration of the months they represent.
  • the funds 7a are low, while they are high for the long months (thirty-one days).
  • These bottoms 7a of the toothing 7 form a camming surface of the months against which a probe 10a of a calendar flip-flop 10 pivots at a point 10b (cf. figure 4 ).
  • the bottom 7a which is opposite the probe 10a at a given instant is that which represents the month indicated through the window of the months 4.
  • the probe 10a is in the form of a roller pivoting on the date rocker 10 to be able to roll on the internal toothing 7 and thus reduce the friction.
  • a return spring 11 acts on the calendar rocker 10 to maintain contact between the roller 10a and the internal toothing 7.
  • a jumper 12 (cf. figure 1 ) cooperates with the internal toothing 7 to maintain in position the indicator disc of month 1 between two angular displacements.
  • the indicator disc of the date 2 (cf. figure 4 ) carries on its upper surface a series of thirty-one indications, in the form of numerals "1" to "31", designated by the reference 13 and successively visible through the wicket
  • the date indicator disc 2 further comprises, on a first level, an internal toothing 14 of thirty-one teeth 14a and on a second level a circular surface 15 coaxial with the internal toothing 14 and having a month-end dip 15a.
  • the internal toothing 14 is intended to cooperate with a double date finger 16 for driving the indicator disc of the date 2.
  • the circular surface 15 with its month-end recess 15a constitutes an end-of-month cam surface against which 'supports a probe 17a of a flip-flop of months 17 pivoting at a point 17b (cf. figure 2 ) and a probe 18a of an intermediate rocker 18 pivoting at a point 18b (cf. figure 4 ).
  • the probes 17a, 18a are in the form of simple spouts but, alternatively, they could be rollers pivotally mounted on the respective latches 17, 18 to reduce friction.
  • the intermediate flip-flop 18 enables the date latch 10 to cooperate indirectly with the end-of-month cam surface 15, as will be explained hereinafter. In a variant, the date latch 10 and the intermediate latch 18 could be replaced by a single latch.
  • a jumper 21 (cf. figure 1 ) cooperates with the internal toothing 14 to maintain in position the indicator disc of the date 2 between two angular displacements.
  • the indicator disc of the day of week 3 includes (cf. figure 7 ) an internal toothing 22 and carries on its upper surface a series of seven indications "MONDAY”("MONDAY”) to "SUNDAY”("SUNDAY”), designated by the reference 23, representative of the days of the week.
  • these indications 23 are located on a circle of greater radius than that of the date indications 13, so as to surround these date indications 13 in plan view.
  • the internal toothing 22 meshes with a wheel 23 'of a mobile further comprising a star 24 and a pinion 25.
  • a jumper 26 acts on the star 24 to hold in position the indicator disc of the day 3 between two angular displacements.
  • Pinion 25 meshes with a wheel intermediate 27 which also meshes with a first wheel 28 of an intermediate mobile.
  • a star 29 of the intermediate mobile is intended to be driven by a double finger of days 30.
  • the action of the jumper 26 on the star 24 positions the entire chain of gearing 22, 23 ', 24, 25, 27, 28, 29.
  • the teeth of this gear chain are preferably shaped to minimize or even cancel the gear sets. Flexible tooth wheels can be used for this purpose.
  • the calendar mechanism further comprises a calendar cam 31 of the type of the instant jump cam described in the patent EP 2407833 of the applicant which is incorporated herein by reference.
  • This calendar cam 31 is coaxial with a drive wheel 32 which is driven by the gear wheel at a rate of one turn per twenty-four hours.
  • the calendar cam 31 is connected to the drive wheel 32 by means of a pin 33 engaged in an oblong hole in a circular arc 34, so as to be able to move in rotation with respect to the drive wheel 32 only a predetermined angle typically equal to about 90 °.
  • the pin 33 is carried by one of the calendar cam 31 and the drive wheel 32, namely the calendar cam 31 in the example shown, and the arcuate elongated hole 34 is formed in the another of the calendar cam 31 and the drive wheel 32, namely the drive wheel 32 in the example shown.
  • a calendar flip-flop 35 pivoted at a point 35a is based on this calendar cam 31.
  • the calendar cam 31 and the drive wheel 32 are part of a drive wheel 36 illustrated in FIGS. Figures 8 and 9 .
  • the driving wheel 36 comprises a shaft 37 on which the calendar cam 31, a first plate 38 and a second plate 39 are mounted in integral rotation, the driving wheel 32 being mounted to rotate freely around from this tree 37.
  • the finger of the months 9 is mounted eccentrically on the drive wheel 36, and is pivoted about a pin 40 which solidarises in rotating the first and second plates 38, 39, the pin 40 being for example fixed to the second plate 39 and guided in a hole of the first plate 38.
  • the finger of the months 9 comprises a lug or beak 9a (visible at Figures 2 and 3 ) intended to cooperate with the toothing 7 of the indicator disk of the month 1, and carries a roller 9b for rolling on a cam surface 17c of the rocker months 17.
  • This roller 9b is advantageous in that it reduces friction but it could, alternatively, be replaced by a beak or finger surface of the months 9 sliding on the cam surface 17c of the latch of months 17.
  • a return spring 41 (cf.
  • figure 2 acts on the finger of the months 9 to hold against the cam surface 17c of the flip-flop 17 or against a stop surface 42 of the drive wheel 36 (cf. figure 9 ), according to the relative position of the finger of the months 9 and the rocker of the months 17.
  • the return spring 41 is in one piece with the finger of the months 9 and is supported at its free end on a pin 43 (visible at figures 2 and 9 ) in the example shown, also, the abutment surface 42 is the wall of a hole that has the plate 39, with which can come into contact with the axis, 9c , roller 9b.
  • the double date finger 16 is mounted eccentrically on the drive wheel 36, and is pivotable about the pin 33 fixed to the calendar cam 31. In a variant, the double date finger 16 could be pivoted around the Another pin rotatably integral with the calendar cam 31 as the pin 33.
  • the double date finger 16 comprises first and second lugs or spouts 16a, 16b (visible in particular in FIG. figure 4 ) integral with each other and intended to cooperate with the toothing 14 of the indicator disc of the date 2, and is preferably in the form of a single piece.
  • a roller 16c is mounted on the double date finger 16 to roll on a cam surface 10c of the calendar rocker 10.
  • This roller 16c could nevertheless be replaced by a spout or surface of the double date finger 16 sliding on the surface of 10c of the calendar rocker 10.
  • a return spring 44 acts on the double date finger 16 to hold it against the cam surface 10c of the calendar flip-flop 10 or against an abutment surface 45 of the drive wheel 36 (cf. figure 8 ), according to the relative position of the double date finger 16 and the date latch 10.
  • the return spring 44 is in one piece with the double date finger 16 and is supported at its free end on a pin 46 fixed to the shaft 37.
  • the abutment surface 45 is the wall of a hole that the plate 39 has, with which the axis 16d of the roller 16c.
  • the double finger of the days 30 is coaxial and rotatably connected to the shaft 37 and the calendar cam 31. It can be in one piece with the shaft 37, as illustrated in FIG. figure 8 . It comprises two lugs 30a, 30b (visible at the figure 7 ) arranged to cooperate with the star 29.
  • the calendar mechanism according to the invention operates as follows.
  • the calendar cam 31 performs one revolution per twenty-four hours but in a cycle comprising three successive phases, namely a driving phase by the drive wheel 32, an instantaneous displacement phase at midnight and a stopping phase. .
  • the calendar cam 31 is driven by the drive wheel 32 via the pin 33, which arms the calendar rocker 35.
  • the calendar rocker 35 passes a vertex 31a (cf. figure 7 ) of the calendar cam 31 and falls by instantaneously rotating the calendar cam 31, and with it the finger of the months 9 and the double date finger 16, with respect to the drive wheel 32.
  • the calendar 31 stops rotating when the calendar lever 35 cooperates with a recess 31b of this cam 31, until the drive wheel 32 catches it, several hours later, to drive it again.
  • the double finger of the days 30 cooperates with the star 29 to move the indicator disc of the day 3 of a seventh of a turn via the mobiles 23 ', 25, 27, 28 and thus indicate the following day through the window of the days 6.
  • This cam surface 17c is a reinforcing surface that lifts the finger 9 months against the action of its return spring 41.
  • the first lug 16a of the double date finger 16 passes near the top of a tooth of the toothing 14 without touching the teeth 14 or at oins without training (cf. figure 4 ). After the passage of the first lug 16a, the roller 16c arrives on a disassembly portion 10e of the cam surface 10c and the rolling of the roller 16c on this disarming portion 10e releases the double date finger 16 and changes its trajectory to move the second lug 16b towards the bottom of the toothing 14.
  • the second lug 16b comes into contact with a flank of one of the teeth 14a of the date indicator disc 2 and cooperates with this tooth to move the date indicator disc 2 by a step and indicate the next date through the date window 5.
  • the finger of the months 9, he, guided by the cam surface 17c passes near the top of one of the teeth 7b of the indicator disk of the month 1 without touching the teeth 7 of this disc 1 or at least without driving it. Then, the calendar cam 31 enters its stop phase.
  • the double date finger 16 which is no longer guided by the calendar rocker 10 but abuts against the abutment surface 45 of the mobile 36, is in such an angular position relative to the drive wheel 36 that the first lug 16a comes into contact with a flank of one of the teeth 14a of the indicator disc of the date 2 and pushes the tooth to move the date indicator disc 2 of a first step. Then the second lug 16b comes into contact with a flank of the tooth 14a which precedes and pushes the tooth to move the indicator disc of the date 2 of a second step. The indicator disc of the date 2 is thus moved instantly two steps to replace the date "30" visible through the date window 5 by the date "1".
  • the finger of the months 9 then abuts against the abutment surface 42 of the drive wheel 36 to occupy an angular position relative to the drive wheel 36 which allows it to enter the toothing 7 of the indicator disk of the month 1 and to cooperate with one of the teeth 7b while the second lug 16b of the double date finger 16 makes its second step to the indicator disc of the date 2, in order to move the indicator disc of the month 1 of a step and thus to indicate the following month through the window of the months 4.
  • the double date finger 16 performs the same movement as every day at midnight between the 1st and the 29th.
  • the lug 9a of the finger of the months 9 driven by the calendar cam 31 approaches the toothing 7 of the indicator disk of the month 1 being guided by the rolling of the roller 9b on the cam surface 17c of the flip-flop 17.
  • the first lug 16a of the double date finger 16 passes near the top of one of the teeth 14a of the toothing 14 without touching the toothing 14 or at least without causing it.
  • the roller 16c After the passage of the first lug 16a, the roller 16c arrives on the disassembly portion 10e of the cam surface 10c of the date latch 10 and the rolling of the roller 16c on this portion 10e releases the double date finger 16 and changes its trajectory for moving the second lug 16b towards the bottom of the toothing 14.
  • the second lug 16b comes into contact with a flank of one of the teeth 14a of the date indicator disc 2 and cooperates with this tooth to move the disc one step date indicator 2 and change the indication visible through the date window 5 from "30" to "31".
  • the finger of months 9 it passes near the top of one of the teeth 7b of the indicator disk of the month 1 without touching the toothing 7 of the disc 1 or at least without driving.
  • the latch of the months 17 falls into the month-end depression 15a and the intermediate lever 18 exit the end-of-month recess 15a to return to its initial position on the circular surface 15.
  • the double date finger 16 performs the same movement as the 30 at midnight to change the indication visible through the date window 5 of "31" to "1".
  • the finger of the months 9, it, abutting against the abutment surface 42 of the drive wheel 36 occupies an angular position relative to the drive wheel 36 which allows it to enter the toothing 7 of the indicator disk of the month 1 and to cooperate with one of the teeth 7b while the second lug 16b of the double date finger 16 makes its step to the indicator disc of the date 2, in order to move the indicator disc of the month 1 of a step and thus indicate the month next through the window of the months 4.
  • the calendar mechanism according to the invention has many advantages. It comprises relatively few parts and does not need a gear for the display of the month and the date, which wheel should index the wheels relative to each other, thanks to the cam surfaces 7a, 15 that carry the indicator discs of the month and of the date 1, 2.
  • the calendar mechanism according to the invention imposes on the double-digit date-index 16 less variations in trajectory than those experienced by the date finger of the mechanism according to the invention. US 3673789 .
  • the double date finger 16 cooperates with the toothing 14 of the indicator disc of the date 2 always on the same radius.
  • the double date finger 16 Since the function of moving the indicator disc of the month 1 is filled by the finger of the months 9, the double date finger 16 does not need to reach the teeth 7 of the indicator disk of the month 1 and therefore does not need to touch the bottom of the tooth of the indicator disk of the date 2 nor to slide on a high tooth, which reduces the friction.
  • the absence of a high tooth (tooth whose vertex is on a circle concentric with the indicator disk of date 2 and radius smaller than that of the other teeth) allows a guide of the indicator disc of the date 2 by its inner contour.
  • the finger of the months 9 and the double date finger 16 constitute effective anti-double jump organs.
  • the setback 9d of the pin 9a of the finger of the months 9, respectively the 16th flap of the second lug 16b of the double date finger 16 serves as a stop to the toothing 7 of the disc 1, respectively to the toothing 14 of the disc 2, to prevent further displacement of the latter under the effect of its inertia.
  • each indicator disc 1, 2, 3 moving instantaneously to change the indication visible through the corresponding window 4, 5, 6.
  • the calendar mechanism according to the invention could be made trailing or semi-trailing.
  • the calendar cam 31 would be deleted and the finger of the month 9 and the double date finger 16 would be carried by the drive wheel 32.
  • the indicator discs of the month and the date 1, 2 could be made coaxial by providing different diameters for these discs 1, 2 or by providing openings in that of the two discs 1, 2 which is above the other to make it possible to read the indications of the other disc.
  • the calendar mechanism according to the invention is arranged so that in case of setting the time back, resulting in a rotation behind the drive wheel 36 relative to its normal direction of rotation, the indicator disk of the month 1 is never driven.
  • the calendar rocker 10 blocks the indicator disk of the month 1 in its direction of rotation back.
  • the reverse 16e of the second lug 16b of the double-finger of date 16 causes the indicator disc of the date 2 a step back when it meets a tooth 14a of said disk 2.
  • the first lug 16a remains, it, inactive at each time setting back, the rolling of the roller 16c on the portion 10e of the cam surface 10c of the date latch 10 causing a retraction of the double date finger 16 before the first lug 16a has the time to cooperate with a tooth 14a.
  • the indicator disk of the month 1 is never driven in time backwards while the date indicator disc 2 is driven by a single step during a time setting back riding midnight.
  • the calendar mechanism according to the invention further comprises a mechanism for rapid correction of the month display and the date display.
  • This correction mechanism is illustrated in Figures 10 to 13 . He understands (cf. figure 13 ) a rotary driving wheel 50 about an axis 51 and comprising a first wheel 50a and a second wheel 50b integral with each other.
  • the first wheel 50a meshes with an intermediate mobile 52 which itself meshes with another intermediate mobile 53 in engagement with the sliding pinion 54 mounted on the winding stem 55 of the movement.
  • the driving mobile 50 is thus driven by the rotations of the winding stem 55 when it is in an axial position of correction of the display of the month and the date.
  • the correction mechanism further comprises a correction flip-flop 56 pivoting about a barrel 50c of the first wheel 50a of the driving wheel 50, between the first and second wheels 50a, 50b.
  • the correction lever 56 On both sides of the driving wheel 50, the correction lever 56 carries a first driven wheel 57 and a second driven wheel 58 meshing with the second wheel. wheel 50b.
  • the first driven wheel 57 is in the form of a rotating wheel about a pin 59 fixed to the correction lever 56. It is intended to cooperate with a return 60 which itself meshes with a pinion 61 which is coaxial and a second correction star of the months 62 is secured.
  • the second driven wheel 58 also rotatable about a pin 63 fixed to the correction lever 56, comprises a wheel 58a which meshes with the second wheel 50b of the driving wheel 50 and a star of date correction 58b which is integral with the wheel 58a.
  • the date correction star 58b is intended to cooperate with the toothing 14 of the date indicator disc 2.
  • a curved washer 64 is disposed between one of the two driven mobiles 57, 58, namely the mobile 57 in the example shown, and its pin 59, 63 to produce a friction.
  • this friction rotates the correction lever 56 in one direction or the other in the direction of rotation of the winding stem 55.
  • the correction flip-flop 56 can occupy an intermediate position and two extreme positions.
  • the driven mobiles 57, 58 are out of contact, respectively, with the reference 60 and the indicator disc of the date 2.
  • the first driven wheel 57 meshes with the gear 60 and the second driven gear 58 (not shown in FIG. figure 10 ) is out of contact with the date indicator disc 2.
  • the first driven mobile 57 (not shown in FIG. figure 11 ) is out of contact with the reference 60 and the date correction star 58b of the second driven mobile 58 cooperates with the toothing 14 of the date indicator disc 2.
  • a rotation of this rod 55 in one direction causes the correction lever 56 to be in its first extreme position and then turn the correction star of the month 62, which, in cooperating with an external toothing 7c of the indicator disc of the month 1, rotates the latter to correct the indication of the visible month through the window of the months 4.
  • a rotation of the winding stem 55 in the other direction causes the rocker to correction 56 in its second extreme position, rotates the date correction star 58b, which, by cooperating with the toothing 14 rotates the indicator disc of the date 2 to correct the indication of the date visible through the date window. 5.
  • This correction mechanism makes it possible to precisely adapt the correction to the different toothings that the indicator discs of the month and the date 1, 2 bear, while requiring only an axial position of the winding stem 55 for the correction of the display. of the month and the date.
  • a stop 65 (cf. figures 10 and 12 ) can be provided to limit the possibility of rotation of the correction star of the months 62 in its direction of correction rotation and thus prevent the latter from taking an angular position (shown in dashed lines on the figure 12 ) capable of producing bracing.
  • This stop 65 is retractable and is in the example shown in the form of a jumper, so as to allow the rotation of the correction star months 62 by the winding stem 55.
  • the correction mechanism further comprises a positioning device making it possible to keep the correction lever 56 in its intermediate position when the winding stem 55 is in an axial position other than the correction position.
  • This positioning device comprises (cf. Figures 10 to 12 ) an actuating lever 66 pivoting at a point 66a and having an oblong elongated hole 66b in which a pin is engaged 67 carried by the pull tab 68 associated with the winding stem 55, the pull tab 68 pivoting at a point 68a.
  • the positioning device further comprises a positioning lever 69 pivoting at a point 69a and having an arcuate oblong hole 69b in which is engaged a pin 70 carried by the actuating lever 66.
  • the pull tab 68 controlled by the winding stem 55 controls the actuating lever 66 which itself controls the positioning rocker 69.
  • the pull tab 68 is shown in its angular position corresponding to the axial correction position of the display of the month and the date of the winding stem 55. This is an intermediate position of the pull tab 68 and the rod 55.
  • the pin 67 is at a first, respectively a second, ends elongated oblong hole 66b (cf. figure 12 ).
  • an end 69c of the positioning lever 69 is housed in a recess 56a of the correction lever 56 to prevent it from pivoting.
  • the end 69c of the positioning lever 69 and the recess 56a are shaped to move the correction lever 56 into its intermediate position when the end 69c is engaged in the recess 56a.
  • the end 69c of the positioning flip-flop 69 leaves the recess 56a to allow the pivoting of the correction lever 56 to pivot.
  • This positioning mechanism makes it possible to avoid any unwanted movement of the correction lever 56 that can correct the display of the month or the date during the reassembly or the time setting.
  • the hole 10g of the date rocker 10 which receives the pin constituting the pivot point 10b is oblong. This oblong hole 10g makes it possible to reduce the angular movement of the date rocker 10 during the normal operation of the calendar mechanism and during the correction of the display of the month.
  • the double date finger 16 could be in the form of two date fingers movable relative to each other, namely a first date finger including the first lug 16a and a second date finger including the second lug 16b.
  • the second date finger could be coaxial and integral in rotation with the calendar cam 31 and the first date finger could be mounted eccentrically on the calendar cam 31, subjected to the action of a return spring and arranged to be guided by the calendar rocker 10 or to bear against an abutment surface of the driving wheel 36 as a function of the relative position of the second date finger and the date rocker 10.
  • Another modification of the invention could be to make the end-of-month cam surface 15 in the form of two surfaces in different parallel planes. One of these surfaces would cooperate with the latch 17 months while the other of these surfaces would cooperate with the intermediate latch 18. The end of month trough of one of these surfaces could be offset from the end trough months of the other of these surfaces.
  • the cam surface of the months could be formed by the flanks of the teeth of the internal toothing 7, teeth whose width and spacing angular would vary to represent the duration of the months.
  • the figure 14 shows such a variant with the date rocker, designated by 10 ', cooperating by its probe 10a 'with the flanks of the teeth of the internal toothing 7' of the indicator disk of the month 1 '.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
EP17189339.9A 2017-09-05 2017-09-05 Mecanisme de calendrier pour piece d'horlogerie Withdrawn EP3451077A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17189339.9A EP3451077A1 (fr) 2017-09-05 2017-09-05 Mecanisme de calendrier pour piece d'horlogerie
CN201811024221.7A CN109426131A (zh) 2017-09-05 2018-09-04 用于钟表的日历机构

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EP17189339.9A EP3451077A1 (fr) 2017-09-05 2017-09-05 Mecanisme de calendrier pour piece d'horlogerie

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EP3451077A1 true EP3451077A1 (fr) 2019-03-06

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH716983A1 (fr) 2019-12-20 2021-06-30 Mft Dhorlogerie Audemars Piguet Sa Mécanisme horloger destiné à être entraîné suivant un nombre de pas variable.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673789A (en) 1970-06-13 1972-07-04 Citizen Watch Co Ltd Calendar timepiece with month advancement mechanism for 29,30,or 31 day months
US4182109A (en) * 1977-08-22 1980-01-08 Citizen Watch Co., Ltd. Calendar mechanism for timepieces
JP2005106656A (ja) * 2003-09-30 2005-04-21 Miyota Kk 時計のカレンダー機構
US20100135125A1 (en) * 2008-11-28 2010-06-03 Mamoru Watanabe Watch with calendar mechanism equipped with month indicator and date indicator
EP2407833A1 (fr) 2010-07-14 2012-01-18 Breitling AG Mécanisme de rattrapage de jeu pour mouvement d'horlogerie

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673789A (en) 1970-06-13 1972-07-04 Citizen Watch Co Ltd Calendar timepiece with month advancement mechanism for 29,30,or 31 day months
US4182109A (en) * 1977-08-22 1980-01-08 Citizen Watch Co., Ltd. Calendar mechanism for timepieces
JP2005106656A (ja) * 2003-09-30 2005-04-21 Miyota Kk 時計のカレンダー機構
US20100135125A1 (en) * 2008-11-28 2010-06-03 Mamoru Watanabe Watch with calendar mechanism equipped with month indicator and date indicator
EP2407833A1 (fr) 2010-07-14 2012-01-18 Breitling AG Mécanisme de rattrapage de jeu pour mouvement d'horlogerie

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