EP2776894B1 - Mechanism for driving an indicator - Google Patents

Mechanism for driving an indicator Download PDF

Info

Publication number
EP2776894B1
EP2776894B1 EP12781355.8A EP12781355A EP2776894B1 EP 2776894 B1 EP2776894 B1 EP 2776894B1 EP 12781355 A EP12781355 A EP 12781355A EP 2776894 B1 EP2776894 B1 EP 2776894B1
Authority
EP
European Patent Office
Prior art keywords
wheel
coding
drive
days
retractable
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.)
Active
Application number
EP12781355.8A
Other languages
German (de)
French (fr)
Other versions
EP2776894A1 (en
Inventor
Stephen Forsey
Christoph NEBOISA
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.)
GFPI SA
Original Assignee
GFPI 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 GFPI SA filed Critical GFPI SA
Publication of EP2776894A1 publication Critical patent/EP2776894A1/en
Application granted granted Critical
Publication of EP2776894B1 publication Critical patent/EP2776894B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • G04B19/2534—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released continuously by the clockwork movement
    • 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
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • 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
    • 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
    • G04B19/24306—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 combination of different shapes, e.g. bands and discs, discs and drums
    • G04B19/2432—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • 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

Definitions

  • This training mechanism can be used in a wristwatch, but also a pocket watch, a clock, or a clock.
  • An object of the present invention is therefore to overcome these disadvantages, by providing a springless drive mechanism for managing the entry and exit of retractable teeth, simple to implement, and generating little friction so as to use less of energy than traditional systems.
  • Another object of the present invention is to provide a drive mechanism for bidirectional rotation of the indicator.
  • Another object of the present invention is to provide a compact drive mechanism comprising a reduced number of components and impact resistant.
  • each retractable tooth comprises a stud and the corresponding coding cam associated with a maximum value nx of the information may comprise a track in which the stud may circulate, the track having a configuration suitable for the retractable tooth to remain in its inactive position at each period for which the associated maximum value of the information is a value between n-x + 1 and n, and for the retractable tooth to move from its inactive position to its active position at each period for which the associated maximum value of the information is a value between nm and nx and then returns to its inactive position after cooperating with the second driving gear.
  • each retractable tooth moves radially relative to the drive wheel.
  • the drive means may comprise a drive member comprising a driving toothing arranged to cooperate with the drive wheel and a number of drive teeth equal to the number of coding wheels, said drive teeth. being arranged to cooperate with the coding wheels, the driving toothing and the driving teeth being chosen from in order to obtain an adequate speed ratio between the driving wheel and each of the coding cams.
  • the driving toothing and the drive teeth can be mounted on the same shaft.
  • the driving wheel may comprise a second toothing to cooperate with the drive means.
  • the coding wheels, coding cams and the driving wheel may be coaxial.
  • the first and second sets of driving gears may comprise a first and a second driving pinion respectively, said first and second driving gears being integral with one another.
  • the drive mechanism is a drive mechanism of a perpetual calendar indicator
  • said mechanism comprises a first retractable tooth and a first coding cam associated with the 30-day month, a second retractable tooth and a second coding cam associated with the 29-day February month and a third retractable tooth and a third coding cam associated with the 28-day February month, the driving wheel being a 31-tooth date wheel arranged to move forward one step per day.
  • the coding cam associated with the 30-day month may be integral with a coding wheel of the months of 30 and 31 days, and the coding cam associated with the month of February of 29 days and the cam of coding associated with the month of February of 28 days are in solidarity with the same coding wheel of the months of February of 28 and 29 days.
  • the drive means may comprise a drive member comprising a driving toothing arranged to cooperate with the date wheel, a first drive gear arranged to cooperate with the coding wheel of the months of 30 and 31 days, and a second drive gear arranged to cooperate with the coding wheel of the months of February of 28 and 29 days.
  • the toothings of the date wheel and the drive member are such that, with the date wheel turning 12 times a year, the coding wheel of the months of 30 and 31 days is 11 turns per year, shifting by 30 ° by month of the date wheel, and the coding wheel of the months of February of 28 and 29 days makes 47 laps in 4 years, shifting 7.5 ° per month of the date wheel.
  • the drive mechanism comprises a drive mechanism of a day of the week indicator, said drive mechanism of a weekday indicator comprising a wheel of the days arranged to cooperate with the first toothing of the driving wheel when the retractable teeth are in the inactive position, and to be disengaged from the first toothing of the driving wheel when at least one of the retractable teeth is in the active position.
  • the drive mechanism of a day of the week indicator may further comprise a rocker on which is mounted the day wheel and a lever cooperating with said rocker, said lever having an arranged projecting zone. to cooperate with at least one of the retractable teeth when the latter are in the active position, so as to lift said lever and the rocker and clear the wheel of the days of the first toothing of the driving wheel.
  • a period during which the information changes from step to step may be a non-cyclical period, such as the months of a Chinese calendar, or a period forming a cycle, such as the months of a month.
  • Gregorian calendar said information given by the indicator being for example the day of the month.
  • the information given by the indicator is the date or the day of the month, the cycle being four years, and the cycle periods being the different months of the year.
  • the drive mechanism according to the invention is a drive mechanism for a perpetual calendar indicator for a Gregorian calendar, the driving wheel being a 31-tooth date wheel arranged to advance a not a day, this advancement being called a regular advancement.
  • an additional step means that the driving wheel moves one step further, independently of any chronological order with respect to the steady advance of one step per day.
  • a drive mechanism comprising a single first toothed gear 1 to a tooth and a single second toothed gear 2 with three teeth, coaxial and integral with each other. They can be formed in one piece as represented on the figure 4
  • the first and second driving gears 1 and 2 are energized by the movement to which they are kinematically connected by a pinion 6 also integral with the shaft 4.
  • the first and second driving gears 1 and 2 cooperate with the movement in order to perform a complete revolution per day.
  • Sets of first and second driving gears comprising one or more teeth may also be used, their rotation speed being adapted for the driving wheel to advance the required number of steps.
  • the set of second drive gears may comprise a plurality of second drive gears distributed at different locations around the drive wheel.
  • the mechanism also comprises a driving wheel, and more specifically here, a date wheel 8, comprising a first set of 31 teeth arranged to mesh with the first driving gear 1.
  • a date wheel 8 is driven one step per day by the tooth of the first drive gear 1 and performs step by step a complete revolution in one month.
  • the date wheel 8 also comprises a second toothing 11 arranged to cooperate with the drive means described below.
  • the axis 12 of the date wheel 8 carries an indicator, such as a needle or a disc, (not shown) cooperating with a thirty-one scale on the dial of a timepiece, said indicator indicating the date.
  • an indicator such as a needle or a disc, (not shown) cooperating with a thirty-one scale on the dial of a timepiece, said indicator indicating the date.
  • date wheel it is also possible to connect the date wheel to an indicator disposed at any point in the movement by means of a gear train or a suitable mechanism.
  • the teeth of the first and second driving gears 1 and 2 are arranged relative to one another so that they do not cooperate at the same time with the date wheel 8.
  • the date wheel 8 comprises a solid surface 14 in which are provided three countersinks, opposite the coding wheel 16 months 30 and 31 days and the encoding wheel 18 February 28 and 29 days described below.
  • a retractable tooth dimensioned so that each retractable tooth can slide radially in the countersink associated to evolve between its active and inactive positions as defined above. It is obvious that the retractable teeth could also evolve between more than these two positions. More particularly, the retractable teeth could have several positions that would make it possible to act on other wheels having different pitch diameters.
  • the thickness of the solid surface 14 is sufficient so that the retractable teeth disposed in the countersink are positioned under the first toothing 10 and can mesh with the second drive gear 2 when they are in the active position.
  • the mechanism comprises three retractable teeth 20, 21, 22, the retractable tooth 20 being associated with the months of 30 days, the retractable tooth 21 being associated with the month of February of 29 days and the retractable tooth 22 being associated with the month of February of 28 days.
  • Oblong holes 24 and 25 are provided at the end of the countersinks to provide areas in which the retractable teeth can retract into the inactive position.
  • the drive mechanism comprises the coding wheel 16 of months 30 and 31 days and a coding cam 26, integral with the coding wheel 16 and associated with the retractable tooth 20.
  • the coding cam 26 comprises a track 28 in which a stud 30 protruding from the retractable tooth 20 can travel in the direction of the coding cam 26.
  • the track 28 has a configuration made of a set of recesses and points, said configuration being appropriate in order that the retractable tooth associated with the 30-day months remains in its inactive position within the countersink in the 31-day months, and thus leaves its countersink and goes into active position in the months of 28, 29 and 30 days, and then returns to the inactive position after meshing with the second drive gear 2.
  • the drive mechanism also includes the February 28 and 29 day coding wheel 18, a 29 day February coding cam associated with the retractable tooth 21, and a coding cam 34 associated with the February 28 day, and associated with the retractable tooth 22.
  • a single coding wheel 18 for carrying the encoding cams 32 and 34 of February, said coding cams 32 and 34 being integral with said coding wheel 18 of the months of February of 28 and 29 days.
  • the coding cam 32 comprises a track 36 in which a stud 38 projecting from the retractable tooth 21 can flow in the direction of the coding cam 32.
  • the track 36 has a configuration made up of four circular sectors and four pointed sectors. separating the circular sectors, distributed regularly. This configuration is appropriate for the retractable 21 tooth associated with the 29-day-old February to remain in its inactive position within the 31-day and 30-day months of the countersink and thus move into position activates the months of February 28 and 29 days, and then returns to the inactive position after gearing with the second drive gear 2.
  • the coding cam 34 comprises a track 40 in which a stud 42 projecting from the retractable tooth 22 can flow in the direction of the coding cam 34.
  • the track 40 has a configuration made up of three circular sectors and three pointed sectors. separating the circular sectors, two circular sectors extending regularly over 180 ° and the third circular sector extending over 180 °. This configuration is appropriate for the retractable tooth associated with the 28-day February months to remain in its inactive position within the 31-day, 30-day, and 29-day months of the countersink. and sort of its countersink and goes into the active position in February of 28 days, and then returns to the inactive position after gearing with the second drive gear 2.
  • the encoding wheel 18 of February 28 and 29 days includes a central opening 44, sized to receive the coding cam 26 associated with the 30-day month.
  • the three tracks 28, 36 and 40 are on the same plane.
  • the coding wheel 16 of the months of 30 and 31 days, the coding wheel 18 of the months of February of 28 and 29 days, the coding cam 26 associated with the months of 30 days, the coding cams 32 and 34 associated with the months February 29 and 28 days, and the date wheel 8 are coaxial with the axis 46, the coding wheels 16 and 18 and the date wheel 8 being rotatably mounted about this axis 46.
  • the drive mechanism according to the invention is very compact.
  • the coding cam and the associated coding wheel form a coding mobile that can be made in one piece or in the form of two integral parts.
  • the drive means comprise a drive member 50 comprising a driving toothing 52 arranged to cooperate with the second toothing 11 of the date wheel 8, a first drive gear 54 arranged to cooperate with the coding wheel 16 of the month 30 and 31 days and a second drive gear 56 arranged to cooperate with the encoding wheel 18 February of 28 and 29 days.
  • the driving toothing 52 and the first and second drive teeth 54 and 56 are advantageously mounted integral on the same shaft 58.
  • the dimensions and number of teeth of the various gears used in the invention are chosen to give the coding wheels 16 and 18, and thus the coding cams 26, 32, 34, an adequate rotational speed with respect to the date wheel. , so that the retractable teeth move into the active position at the desired times.
  • the dimensions and number of teeth of the various gears are chosen so that, the wheel of the dates 8 making 12 turns per year, the coding wheel 16 of the months of 30 and 31 days is 11 turns per year, shifting from 30 ° per month of the date wheel 8, and the coding wheel 18 February months of 28 and 29 days makes 47 laps in 4 years, shifting 7.5 ° per month from the wheel of dates 8.
  • the coding cams can be arranged to give the driving wheel the shape of a circular or non-circular gear.
  • the drive mechanism of a perpetual calendar indicator can be associated with a drive mechanism of a weekday indicator, as shown in FIG. Figures 10 to 12 .
  • This day of the week indicator driving mechanism includes a 60-day, seven-toothed wheel arranged to cooperate with the first tooth 31 to 31 teeth of the date wheel 8.
  • the wheel 60 days is integral in rotation with a pinion 62, the first element of a gear train 64 for kinematically connecting the wheel 60 days to a weekday indicator (not shown).
  • the 60-day wheel and the pinion 62 are pivotally mounted on a rocker 66 itself pivotally mounted on the frame about an axis AA. There is provided a return spring 68 pressing the latch 66 and a jumper 70 for holding in position the wheel 60 days.
  • the latch 66 comprises a spout 72 whose function will be described below.
  • the drive mechanism of a day of the week indicator also includes a lever 74 pivotally mounted on the frame about an axis BB.
  • the lever 74 comprises a spout 76 arranged to cooperate with the spout 72 of the rocker 66 and lift the rocker 66 when the lever 74 is lifted.
  • the lever 74 comprises a projecting zone 78 arranged to cooperate with the retractable teeth 20, 21 and 22 when the latter are in the active position.
  • the drive mechanism of a day of the week indicator is positioned so that the retractable teeth 20, 21 and 22 can cooperate on the one hand with the second drive gear 2 and on the other hand with said protruding area 78 To this end, said retractable teeth 20, 21 and 22 have a thickness sufficient to operate both the second drive gear 2 and the protruding area 78 when in the active position.
  • lever 74 and the latch 66 are arranged to move between two positions, namely an inactive position and an active position.
  • the inactive position is the position in which none of the retractable teeth 20, 21 and 22, in the inactive position, cooperates with the lever 74, so that the wheel of the days 60 meshes with the first toothing 10 of the date wheel 8.
  • the active position is the position in which at least one of the retractable teeth 20, 21 and 22, in the active position, cooperates with the projecting zone 78 of the lever 74, so as to raise the latch 66 so that the wheel of the days 66 is released from the first toothing 10 of the date wheel 8.
  • the lever 74 remains in the inactive position and is maintained under the effect of a return spring (not shown), so that the wheel of the days 60 meshes with the wheel of the dates 8 and is trained one step per day to display the day.
  • the lever 74 rises, once, twice or thrice depending on the number of days in the month, under the action of one, two or three retractable teeth 20, 21 , 22 in the active position, which has the effect of clearing the wheel 60 days of the wheel of the dates 8.
  • the day displayed remains fixed while the wheel of the dates 8 advance number of additional steps relative to its progress regular.
  • the day-of-week indicator training mechanism is used to increment the day of the week indication by one day only, including months of less than 31 days.
  • the drive mechanism of a day of the week indicator operates in both directions. Indeed, in case of correction in the opposite direction by a user, the days will be correctly decremented, taking into account the length of the month.
  • the first drive gear 1 meshes with the first toothing 10 of the date wheel 8 so that it advances one step per day so that the date advances by one step per day.
  • the retractable teeth 20, 21 and 22 are in the inactive position so that the second drive gear 2 has no action on the wheel of the dates 8.
  • the date wheel 8 advancing step by step, its second gear 11 meshes with the toothing 52, driving in turn the first and second drive teeth 54 and 56, which in turn rotate the coding wheels 16 and 18 respectively.
  • the retractable teeth 20, 21 and 22 being carried by the date wheel 8, their respective pads 30, 38 and 42 move in their respective tracks 28, 36 and 40 of the associated coding cams 26, 32 and 34.
  • the retractable tooth 20 slides radially in its countersink and goes into active position to mesh with the second drive gear 2, the two retractable teeth 21 and 22 remaining in the inactive position inside the 8.
  • a tooth of the second drive gear 2 meshes with the retractable tooth 20 advancing the wheel of the dates 8 an additional step in relation to the regular advancement of the wheel of the dates 8
  • the tooth of the first drive gear 1 meshes with the first toothing 10 of the wheel of the dates 8, which advances by one step according to its regular progress , so to display the 1st day of the following month.
  • the configuration of the coding cam 26 is such that the retractable tooth 20 resumes its inactive position rapidly by moving its stud 30 in the associated track 28, so that the next day, no retractable tooth is in the active position.
  • each retractable tooth 20, 21 and 22 slides radially in its countersink and goes into active position to mesh with the second drive gear 2 Therefore, when changing the date of the last day of the month, February 28, four jumps to be performed, the three teeth of the second drive gear 2 mesh with the three retractable teeth 20, 21 and 22 advancing the wheel of the dates 8 by three additional steps relative to the regular advancement of the date wheel 8, and the tooth of the first pinion meshes with the coach one first toothing 10 of the date wheel 8, which advances by one step at the regular advancement, so as to display the 1st day of the next month.
  • the configuration of the coding cams 26, 32 and 34 is such that the retractable teeth 20, 21 and 22 resume their inactive position quickly by moving their stud in the associated track, so that the next day, no retractable tooth is in active position.
  • the retractable teeth 20, 21 and 22, by pressing in turn on the protruding area 78 of the lever 74, lift said lever 74 three times to pivot the latch 66 and release the wheel 60 days of the date wheel 8, so that the day displayed remains fixed while the date wheel 8 advances three additional steps with respect to its steady advance.
  • the leap years, for which the month of February comprises 29 days the displacement of the studs 30, 38 and 42 of the retractable teeth in the tracks 28, 36 and 40 during the rotation of the wheel of the dates 8, combined with the rotation coding wheels 16 and 18 that, thanks to the appropriate configuration of the coding cams 26, 32 and 34, the last day of the month, the 29, the pad 30 of the retractable tooth 20 associated with the months of 30 days arrives in a tip of its track 28 of the coding cam 26 associated with the month of 30 days, the pad 38 of the retractable tooth 21 associated with the month of 29 days arrives in a tip of its track 36 of the coding cam 32 associated with the 29 days and the pad 42 of the retractable tooth 22 remains in a hollow of the track 40 of the coding cam 34 associated with the month of February 28 days.
  • the retractable teeth 20 and 21 slide radially in their respective countersink and move into active position to mesh with the second drive gear 2, the retractable tooth 22 remaining in an inactive position within the wheel of the dates 8.
  • two teeth of the second drive gear 2 mesh with the retractable teeth 20 and 21 advancing the date wheel 8 by two additional steps with respect to the steady advance of the date wheel
  • the tooth of the first drive gear 1 meshes with the first toothing 10 of the wheel of the dates 8, which advances by one step according to its regular progress, so as to display the 1 st day of the following month.
  • the configuration of the coding cams 26 and 32 is such that the retractable teeth 20 and 21 resume their inactive position quickly by moving their stud in the associated track, so that the next day, no retractable tooth is in the active position.
  • the drive mechanism according to the invention requires no return spring for moving the retractable teeth. It uses less energy and is more robust than mechanisms using return springs.
  • the drive mechanism according to the invention uses a reduced number of components, said components being of simple construction.
  • the mechanism for driving a perpetual calendar indicator is therefore of particularly simple construction compared to the traditional perpetual calendar indicator drive mechanisms.
  • the main elements of the mechanism according to the invention are superimposed so that a very compact mechanism is obtained.
  • the cams, the coding wheels and the drive means having teeth permanently kinematically connected to the date wheel, the drive mechanism according to the invention can be used for the bidirectional correction of the indicator of calendar.
  • the mechanism could include only a first retractable tooth and a first coding cam associated with the months of 30 days to obtain an annual calendar indicator.
  • the number of retractable teeth can be modified to make other types of date indicator, such as a leap date indicator: there is in this case a second retractable tooth and a second coding cam associated with the month of February of 29 days, the third retractable tooth and the third coding cam associated with the 28-day month of February being suppressed.
  • a manual correction is scheduled to correct the date at the end of a 28-day month of February.
  • the coding wheel of February 28 and 29 days is separated into two independent wheels respectively carrying the corresponding coding cam, the drive member then comprising an additional drive toothing.
  • the teeth of the drive member may be separated by providing a plurality of drive members or arranged differently but always so as to kinematically connect the date wheel to the coding wheels in appropriate gear ratios.
  • the retractable teeth are arranged so that they move in translation in their milling in a horizontal plane xy.
  • the retractable teeth may be arranged so that they move in translation along a vertical axis z or by rotation in a horizontal plane xy.
  • the retractable teeth may be positioned so that their longitudinal axis is not perpendicular to the axis of rotation of the driving wheel. These teeth cooperate with a toothing positioned in a plane, parallel or not, located at a different level of the plane defined by the driving wheel.
  • additional retractable teeth may be provided to circulate in the coding cams already occupied by a retractable tooth used for the date indicator, said additional retractable teeth being used to actuate another mechanism.
  • the drive pinions may be constituted by a wheel similar to the driving wheel described above.
  • the mechanism according to the invention allows to drive a perpetual calendar indicator but it is obvious that it can be used to cause an indicator of any other cyclic or non-cyclic information.
  • the cyclic information may be moon phases or other cyclic information from any type of calendar including cycles, for example the Gregorian calendar.
  • Non-cyclical information may come from, for example, a Chinese calendar, and may be months.

Description

Domaine techniqueTechnical area

La présente invention se rapporte aux pièces d'horlogerie mécanique. Elle concerne plus particulièrement un mécanisme d'entraînement d'un indicateur d'une information liée à un mouvement horloger et variant selon plusieurs périodes au cours de chacune desquelles ladite information évolue de pas en pas jusqu'à une valeur maximale variant entre n et n-m, ledit mécanisme comprenant :

  • un premier ensemble de premiers pignons entraîneurs alimenté en énergie par le mouvement,
  • une roue entraîneuse comprenant une première denture agencée pour engrener avec le premier ensemble de premiers pignons entraîneurs pour avancer de n pas par période,
  • un second ensemble de seconds pignons entraîneurs alimenté en énergie par le mouvement, les premier et second ensembles de pignons entraîneurs étant disposés l'un par rapport à l'autre de sorte qu'ils ne coopèrent pas en même temps avec la roue entraîneuse, et
  • m dents rétractables portées par la roue entraîneuse, chacune étant agencée pour évoluer entre deux positions, à savoir une position active pour engrener avec l'un des seconds pignons entraîneurs du second ensemble de seconds pignons entraîneurs et faire avancer la roue entraîneuse d'un pas supplémentaire, et une position inactive pour ne pas coopérer avec ledit second pignon entraîneur,
  • des cames de codage, chacune associée à au moins une dent rétractable, et des roues de codage solidaires desdites cames de codage, le nombre de cames de codage étant compris entre 1 et m et le nombre de roues de codage étant inférieur ou égal au nombre de cames de codage, chaque came de codage étant associée à au moins une valeur maximale n-x de l'information, x compris entre 1 et m, pour une période, et agencée pour à la fois faire passer la dent rétractable associée de la position active à la position inactive et de la position inactive à la position active à chaque période pour laquelle la valeur maximale associée de l'information est une valeur comprise entre n-m et n-x, et
  • des moyens d'entraînement agencés pour relier cinématiquement la roue entraîneuse à chacune des roues de codage et agencés pour donner une vitesse de rotation adéquate aux cames de codage par rapport à la roue entraîneuse, de sorte que, quand l'information atteint une valeur maximale n-x pour une période, x dents rétractables passent en position active puis reviennent en position inactive, la roue entraîneuse avançant de x pas supplémentaires pour cette période, n, m et x étant des nombres entiers naturels, m étant ≥ 1, de préférence m étant ≥ 2.
The present invention relates to mechanical timepieces. It relates more particularly to a mechanism for driving an indicator of information related to a watch movement and varying according to several periods during each of which said information changes step by step up to a maximum value varying between n and nm. , said mechanism comprising:
  • a first set of first drive gears energized by the movement,
  • a driving wheel comprising a first toothing arranged to mesh with the first set of first drive gears to advance n not per period,
  • a second set of second drive gears energized by the movement, the first and second sets of drive gears being disposed relative to each other so that they do not cooperate at the same time with the drive wheel, and
  • m retractable teeth carried by the driving wheel, each being arranged to move between two positions, namely an active position to mesh with one of the second driving gears of the second set of second drive gears and to advance the driving wheel by one step additional, and an inactive position for not cooperating with said second drive gear,
  • coding cams, each associated with at least one retractable tooth, and coding wheels integral with said coding cams, the number of coding cams being between 1 and m and the number of coding wheels being less than or equal to the number of coding cams, each coding cam being associated with at least one maximum value nx of the information, x between 1 and m, for a period, and arranged to both pass the associated retractable tooth of the active position at the inactive position and position inactive at the active position at each period for which the associated maximum value of the information is a value between nm and nx, and
  • driving means arranged to kinematically connect the driving wheel to each of the coding wheels and arranged to give an adequate rotational speed to the coding cams with respect to the driving wheel, so that when the information reaches a maximum value nx for a period, x retractable teeth move into the active position and then return to the inactive position, the driving wheel advancing x additional steps for this period, n, m and x being natural integers, m being ≥ 1, preferably m being ≥ 2.

Ce mécanisme d'entraînement peut être utilisé dans une montre bracelet, mais également une montre de poche, une pendule, ou une pendulette.This training mechanism can be used in a wristwatch, but also a pocket watch, a clock, or a clock.

Etat de la techniqueState of the art

Un tel mécanisme est décrit par exemple dans la demande de brevet EP 1 351 104 qui décrit l'utilisation d'au moins une dent rétractable portée par une roue de programme, la dent rétractable étant associée à une roue dont des dents jouent le rôle de surface de cames. Toutefois, la dent rétractable est un élément coulissant qui n'est pas maintenu dans une position donnée et qui pourrait donc malencontreusement se positionner en position active en cas de choc. Cela risquerait d'entraîner des blocages du système ou de freiner le mouvement d'horlogerie.Such a mechanism is described for example in the patent application EP 1 351 104 which describes the use of at least one retractable tooth carried by a program wheel, the retractable tooth being associated with a wheel whose teeth play the role of cam surface. However, the retractable tooth is a sliding element that is not maintained in a given position and therefore could inadvertently be positioned in the active position in case of shock. This could result in blockages of the system or curb the watch movement.

Un tel mécanisme est également décrit dans la demande de brevet EP 2 490 084 qui décrit l'utilisation d'une dent escamotable montée pivotante entre une position active dans laquelle elle est entraînée par le mouvement horloger et une position inactive dans laquelle elle n'est pas entraînée par ledit mouvement horloger. Toutefois, il est prévu un élément élastique permettant de maintenir la dent escamotable pivotante en position inactive. L'utilisation d'un tel élément élastique comme ressort de rappel n'est pas optimum. En effet, le comportement au vieillissement de ce type de pièce n'est pas connu. De plus, en cas de rupture ou de déformation de l'élément élastique, le mécanisme risque de ne plus fonctionner correctement. Par ailleurs, la dent escamotable qui se déplace en pivotant présente alors une forme asymétrique. De ce fait, la dent escamotable ne pourra pas engrener avec une roue se trouvant à un diamètre primitif différent, et encore moins de manière bidirectionnelle, étant donné cette asymétrie.Such a mechanism is also described in the patent application EP 2 490 084 which describes the use of a retractable tooth pivotally mounted between an active position in which it is driven by the watch movement and an inactive position in which it is not driven by said watch movement. However, there is provided an elastic member for maintaining the pivoting retractable tooth in the inactive position. The use of such an elastic element as a return spring is not optimum. Indeed, the aging behavior of this type of room is not known. In addition, in case of breakage or deformation of the element the mechanism may not work properly. Moreover, the retractable tooth that moves by pivoting then has an asymmetrical shape. Therefore, the retractable tooth can not mesh with a wheel at a different pitch diameter, let alone bidirectionally, given this asymmetry.

Un autre mécanisme d'entraînement d'un indicateur de quantième utilisant une dent escamotable est par exemple décrit dans le brevet EP 1 240 559 . Dans ce mécanisme, il est prévu, pour le traitement des années bissextiles, l'utilisation d'une dent escamotable soumise à un ressort pour la déplacer et la maintenir dans une position inactive ou rétractée et maintenue en position active par un excentrique présentant une forme cylindrique tronquée.Another mechanism for driving a date indicator using a retractable tooth is for example described in the patent EP 1 240 559 . In this mechanism, it is envisaged, for the treatment of leap years, the use of a retractable tooth subjected to a spring to move and hold in an inactive or retracted position and maintained in active position by an eccentric having a shape truncated cylindrical.

Un tel mécanisme utilisant l'action d'un ressort n'est pas optimum. En effet, dans le document EP 1 240 559 , le ressort est monté contre la paroi intérieure d'une roue de la durée des mois. Cette construction suscite des frottements qui risquent d'être très importants, ce qui génère une perte de couple significative. De plus, le comportement au vieillissement du ressort est inconnu. Le risque est qu'au bout d'un certain temps, la dent escamotable se rétracte mal ou qu'elle soit mal maintenue en position, ce qui pourrait causer un mauvais fonctionnement du système à long terme. Il en va de même en cas de choc, si le ressort se déforme. Le mécanisme risque alors de ne plus fonctionner correctement.Such a mechanism using the action of a spring is not optimum. Indeed, in the document EP 1 240 559 , the spring is mounted against the inner wall of a wheel of the duration of the months. This construction causes friction that may be very significant, which generates a significant loss of torque. In addition, the aging behavior of the spring is unknown. The risk is that after a while, the retractable tooth will retract poorly or be mis-held, which could cause the system to malfunction in the long run. It is the same in case of shock, if the spring is deformed. The mechanism may not work properly.

Un but de la présente invention est donc de pallier ces inconvénients, en proposant un mécanisme d'entraînement sans ressort pour gérer l'entrée et la sortie des dents rétractables, simple à mettre en oeuvre, et générant peu de frottement de manière à utiliser moins d'énergie que les systèmes traditionnels.An object of the present invention is therefore to overcome these disadvantages, by providing a springless drive mechanism for managing the entry and exit of retractable teeth, simple to implement, and generating little friction so as to use less of energy than traditional systems.

Un autre but de la présente invention est de proposer un mécanisme d'entraînement permettant une rotation bidirectionnelle de l'indicateur.Another object of the present invention is to provide a drive mechanism for bidirectional rotation of the indicator.

Un autre but de la présente invention est de proposer un mécanisme d'entraînement compact, comprenant un nombre de composants réduit et résistant aux chocs.Another object of the present invention is to provide a compact drive mechanism comprising a reduced number of components and impact resistant.

Divulgation de l'inventionDisclosure of the invention

A cet effet, et conformément à la présente invention, il est proposé un mécanisme d'entraînement d'un indicateur d'une information liée à un mouvement horloger et variant selon plusieurs périodes au cours de chacune desquelles ladite information évolue de pas en pas jusqu'à une valeur maximale variant entre n et n-m, ledit mécanisme comprenant :

  • un premier ensemble de premiers pignons entraîneurs alimenté en énergie par le mouvement,
  • une roue entraîneuse comprenant une première denture agencée pour engrener avec le premier ensemble de premiers pignons entraîneurs pour avancer de n pas par période,
  • un second ensemble de seconds pignons entraîneurs alimenté en énergie par le mouvement, les premier et second ensembles de pignons entraîneurs étant disposés l'une par rapport à l'autre de sorte qu'ils ne coopèrent pas en même temps avec la roue entraîneuse, et
  • m dents rétractables portées par la roue entraîneuse, chacune étant agencée pour évoluer entre au moins deux positions, à savoir une position active pour engrener avec l'un des seconds pignons entraîneurs du second ensemble de seconds pignons entraîneurs et faire avancer la roue entraîneuse d'un pas supplémentaire, et une position inactive pour ne pas coopérer avec ledit second pignon entraîneur,- des cames de codage, chacune associée à au moins une dent rétractable, et des roues de codage solidaires desdites cames de codage, le nombre de cames de codage étant compris entre 1 et m et le nombre de roues de codage étant inférieur ou égal au nombre de cames de codage, chaque came de codage étant associée à au moins une valeur maximale n-x de l'information, x compris entre 1 et m, pour une période, et agencée pour à la fois faire passer la dent rétractable associée de la position active à la position inactive et de la position inactive à la position active à chaque période pour laquelle la valeur maximale associée de l'information est une valeur comprise entre n-m et n-x, et
  • des moyens d'entraînement agencés pour relier cinématiquement la roue entraîneuse à chacune des roues de codage et agencés pour donner une vitesse de rotation adéquate aux cames de codage par rapport à la roue entraîneuse, de sorte que, quand l'information atteint une valeur maximale n-x pour une période, x dents rétractables passent en position active puis reviennent en position inactive, la roue entraîneuse avançant de x pas supplémentaires pour cette période, n, m et x étant des nombres entiers naturels, m étant ≥ 1, de préférence m étant ≥ 2.
For this purpose, and in accordance with the present invention, there is provided a mechanism for driving an indicator of information related to a watch movement and varying according to several periods during each of which said information changes step by step until at a maximum value varying between n and nm, said mechanism comprising:
  • a first set of first drive gears energized by the movement,
  • a driving wheel comprising a first toothing arranged to mesh with the first set of first drive gears to advance n not per period,
  • a second set of second drive gears energized by the movement, the first and second sets of drive gears being disposed relative to each other so that they do not cooperate at the same time with the drive gear, and
  • m retractable teeth carried by the driving wheel, each being arranged to move between at least two positions, namely an active position to mesh with one of the second driving gears of the second set of second drive gears and to advance the driving wheel of an additional step, and an inactive position for not cooperating with said second drive gear, - coding cams, each associated with at least one retractable tooth, and coding wheels integral with said coding cams, the number of coding cams being between 1 and m and the number of coding wheels being less than or equal to the number of coding cams, each coding cam being associated with at least one maximum value nx of the information, x between 1 and m, for a period, and arranged to both pass the associated retractable tooth from the active position to the inactive position and from the inactive position to the active position to the active position. each period for which the associated maximum value of the information is a value between nm and nx, and
  • driving means arranged to kinematically connect the driving wheel to each of the coding wheels and arranged to give an adequate rotational speed to the coding cams with respect to the driving wheel, so that when the information reaches a maximum value nx for a period, x retractable teeth move into the active position and then return to the inactive position, the driving wheel advancing x additional steps for this period, n, m and x being natural integers, m being ≥ 1, preferably m being ≥ 2.

Selon l'invention, chaque dent rétractable comprend un plot et la came de codage correspondante associée à une valeur maximale n-x de l'information peut comprendre une piste dans laquelle le plot peut circuler, la piste présentant une configuration appropriée pour que la dent rétractable reste dans sa position inactive à chaque période pour laquelle la valeur maximale associée de l'information est une valeur comprise entre n-x+1 et n, et pour que la dent rétractable évolue de sa position inactive vers sa position active à chaque période pour laquelle la valeur maximale associée de l'information est une valeur comprise entre n-m et n-x et revienne ensuite dans sa position inactive après avoir coopéré avec le second pignon entraîneur.According to the invention, each retractable tooth comprises a stud and the corresponding coding cam associated with a maximum value nx of the information may comprise a track in which the stud may circulate, the track having a configuration suitable for the retractable tooth to remain in its inactive position at each period for which the associated maximum value of the information is a value between n-x + 1 and n, and for the retractable tooth to move from its inactive position to its active position at each period for which the associated maximum value of the information is a value between nm and nx and then returns to its inactive position after cooperating with the second driving gear.

Ainsi, chaque dent rétractable se déplace de manière radiale par rapport à la roue entraîneuse. Un avantage de cette construction est que la forme des dents rétractables reste symétrique lorsque les dents rétractables se déplacent de sorte qu'elles peuvent travailler avec d'autres roues du mouvement comportant des diamètres primitifs différents de ceux des roues utilisées dans le mécanisme de l'invention.Thus, each retractable tooth moves radially relative to the drive wheel. An advantage of this construction is that the shape of the retractable teeth remains symmetrical when the retractable teeth move so that they can work with other wheels of the movement having different pitch diameters from those of the wheels used in the mechanism of the invention.

D'une manière avantageuse, les moyens d'entraînement peuvent comprendre un organe d'entraînement comprenant une denture entraîneuse agencée pour coopérer avec la roue entraîneuse et un nombre de dentures d'entraînement égal au nombre de roues de codage, lesdites dentures d'entraînement étant agencées pour coopérer avec les roues de codage, la denture entraîneuse et les dentures d'entraînement étant choisies de manière à obtenir un rapport de vitesse adéquat entre la roue entraîneuse et chacune des cames de codage.Advantageously, the drive means may comprise a drive member comprising a driving toothing arranged to cooperate with the drive wheel and a number of drive teeth equal to the number of coding wheels, said drive teeth. being arranged to cooperate with the coding wheels, the driving toothing and the driving teeth being chosen from in order to obtain an adequate speed ratio between the driving wheel and each of the coding cams.

De préférence, la denture entraîneuse et les dentures d'entraînement peuvent être montées sur un même arbre.Preferably, the driving toothing and the drive teeth can be mounted on the same shaft.

D'une manière avantageuse, la roue entraîneuse peut comprendre une seconde denture pour coopérer avec les moyens d'entraînement.Advantageously, the driving wheel may comprise a second toothing to cooperate with the drive means.

De préférence, les roues de codage, les cames de codage et la roue entraîneuse peuvent être coaxiales.Preferably, the coding wheels, coding cams and the driving wheel may be coaxial.

D'une manière avantageuse, les premier et second ensembles de pignons entraîneurs peuvent comprendre un premier, respectivement un second pignon entraîneur, lesdits premier et second pignons entraîneurs étant solidaires l'un de l'autre.Advantageously, the first and second sets of driving gears may comprise a first and a second driving pinion respectively, said first and second driving gears being integral with one another.

Selon un mode de réalisation préféré, dans lequel le mécanisme d'entraînement est un mécanisme d'entraînement d'un indicateur de quantième perpétuel, ledit mécanisme comprend une première dent rétractable et une première came de codage associées aux mois de 30 jours, une deuxième dent rétractable et une deuxième came de codage associées au mois de février de 29 jours et une troisième dent rétractable et une troisième came de codage associées au mois de février de 28 jours, la roue entraîneuse étant une roue des dates à 31 dents agencée pour avancer d'un pas par jour.According to a preferred embodiment, wherein the drive mechanism is a drive mechanism of a perpetual calendar indicator, said mechanism comprises a first retractable tooth and a first coding cam associated with the 30-day month, a second retractable tooth and a second coding cam associated with the 29-day February month and a third retractable tooth and a third coding cam associated with the 28-day February month, the driving wheel being a 31-tooth date wheel arranged to move forward one step per day.

D'une manière avantageuse, la came de codage associée aux mois de 30 jours peut être solidaire d'une roue de codage des mois de 30 et 31 jours, et la came de codage associée au mois de février de 29 jours et la came de codage associée au mois de février de 28 jours sont solidaires d'une même roue de codage des mois de février de 28 et 29 jours.Advantageously, the coding cam associated with the 30-day month may be integral with a coding wheel of the months of 30 and 31 days, and the coding cam associated with the month of February of 29 days and the cam of coding associated with the month of February of 28 days are in solidarity with the same coding wheel of the months of February of 28 and 29 days.

De préférence, les moyens d'entraînement peuvent comprendre un organe d'entraînement comprenant une denture entraîneuse agencée pour coopérer avec la roue des dates, une première denture d'entraînement agencée pour coopérer avec la roue de codage des mois de 30 et 31 jours, et une deuxième denture d'entraînement agencée pour coopérer avec la roue de codage des mois de février de 28 et 29 jours.Preferably, the drive means may comprise a drive member comprising a driving toothing arranged to cooperate with the date wheel, a first drive gear arranged to cooperate with the coding wheel of the months of 30 and 31 days, and a second drive gear arranged to cooperate with the coding wheel of the months of February of 28 and 29 days.

Les dentures de la roue des dates et de l'organe d'entraînement sont telles que, la roue des dates faisant 12 tours par an, la roue de codage des mois de 30 et 31 jours fait 11 tours par an, se décalant de 30° par mois de la roue des dates, et la roue de codage des mois de février de 28 et 29 jours fait 47 tours en 4 ans, se décalant de 7,5° par mois de la roue des dates.The toothings of the date wheel and the drive member are such that, with the date wheel turning 12 times a year, the coding wheel of the months of 30 and 31 days is 11 turns per year, shifting by 30 ° by month of the date wheel, and the coding wheel of the months of February of 28 and 29 days makes 47 laps in 4 years, shifting 7.5 ° per month of the date wheel.

Selon un mode de réalisation préféré, le mécanisme d'entraînement selon l'invention comprend un mécanisme d'entraînement d'un indicateur du jour de la semaine, ledit mécanisme d'entraînement d'un indicateur du jour de la semaine comprenant une roue des jours agencée pour coopérer avec la première denture de la roue entraîneuse lorsque les dents rétractables sont en position inactive, et pour être dégagée de la première denture de la roue entraîneuse lorsqu'au moins l'une des dents rétractables est en position active.According to a preferred embodiment, the drive mechanism according to the invention comprises a drive mechanism of a day of the week indicator, said drive mechanism of a weekday indicator comprising a wheel of the days arranged to cooperate with the first toothing of the driving wheel when the retractable teeth are in the inactive position, and to be disengaged from the first toothing of the driving wheel when at least one of the retractable teeth is in the active position.

D'une manière avantageuse, le mécanisme d'entraînement d'un indicateur du jour de la semaine peut comprendre en outre une bascule sur laquelle est montée la roue des jours et un levier coopérant avec ladite bascule, ledit levier présentant une zone en saillie agencée pour coopérer avec au moins l'une des dents rétractables lorsque ces dernières sont en position active, de manière à lever ledit levier et la bascule et dégager la roue des jours de la première denture de la roue entraîneuse.Advantageously, the drive mechanism of a day of the week indicator may further comprise a rocker on which is mounted the day wheel and a lever cooperating with said rocker, said lever having an arranged projecting zone. to cooperate with at least one of the retractable teeth when the latter are in the active position, so as to lift said lever and the rocker and clear the wheel of the days of the first toothing of the driving wheel.

Brève description des dessinsBrief description of the drawings

L'invention sera mieux comprise à la lecture de la description qui va suivre, de différents modes de réalisation, donnés à titre d'exemple et faits en référence aux dessins dans lesquels:

  • la figure 1 est une vue d'ensemble isométrique représentant la roue entraîneuse et les roues de codage selon l'invention,
  • la figure 2 est une vue isométrique éclatée de la figure 1,
  • la figure 3 est une vue de dessus du mécanisme d'entraînement de l'invention,
  • la figure 4 est une vue isométrique de la figure 3,
  • la figure 5 représente une vue simplifiée de dessus du mécanisme d'entraînement de l'invention, dans une configuration des mois à 31 jours,
  • la figure 6 représente une vue simplifiée de dessus du mécanisme d'entraînement de l'invention, dans une configuration des mois à 30 jours,
  • la figure 7 représente une vue simplifiée de dessus du mécanisme d'entraînement de l'invention, dans une configuration des mois à 28 jours,
  • la figure 8 représente une vue simplifiée de dessus du mécanisme d'entraînement de l'invention, dans une configuration des mois à 29 jours,
  • la figure 9 représente une vue de dessous de la roue entraîneuse,
  • la figure 10 représente une vue de dessus du mécanisme d'entraînement de l'invention associé à un mécanisme d'entraînement d'un indicateur du jour de la semaine en position inactive,
  • la figure 11 est une vue isométrique du mécanisme de l'invention montrant le mécanisme d'entraînement de l'invention associé à un mécanisme d'entraînement d'un indicateur du jour de la semaine en position inactive, et
  • la figure 12 est une vue isométrique du mécanisme de l'invention montrant le mécanisme d'entraînement de l'invention associé à un mécanisme d'entraînement d'un indicateur du jour de la semaine en position active.
The invention will be better understood on reading the description which follows, of various embodiments, given by way of example and with reference to the drawings in which:
  • the figure 1 is an isometric overview showing the driving wheel and the coding wheels according to the invention,
  • the figure 2 is an exploded isometric view of the figure 1 ,
  • the figure 3 is a top view of the drive mechanism of the invention,
  • the figure 4 is an isometric view of the figure 3 ,
  • the figure 5 represents a simplified view from above of the drive mechanism of the invention, in a configuration of months to 31 days,
  • the figure 6 represents a simplified view from above of the drive mechanism of the invention, in a configuration of months to 30 days,
  • the figure 7 represents a simplified view from above of the drive mechanism of the invention, in a configuration of months to 28 days,
  • the figure 8 represents a simplified view from above of the drive mechanism of the invention, in a configuration of the months at 29 days,
  • the figure 9 represents a view from below of the driving wheel,
  • the figure 10 represents a top view of the drive mechanism of the invention associated with a mechanism for driving a weekday indicator in the inactive position,
  • the figure 11 is an isometric view of the mechanism of the invention showing the drive mechanism of the invention associated with a drive mechanism of a weekday indicator in the inactive position, and
  • the figure 12 is an isometric view of the mechanism of the invention showing the drive mechanism of the invention associated with a drive mechanism of a weekday indicator in the active position.

Mode(s) de réalisation de l'inventionMode (s) of realization of the invention

Dans la présente description, une période au cours de laquelle l'information évolue de pas en pas peut être une période non cyclique, telle que les mois d'un calendrier chinois, ou une période formant un cycle, telle que les mois d'un calendrier grégorien, ladite information donnée par l'indicateur pouvant être par exemple le jour du mois.In the present description, a period during which the information changes from step to step may be a non-cyclical period, such as the months of a Chinese calendar, or a period forming a cycle, such as the months of a month. Gregorian calendar, said information given by the indicator being for example the day of the month.

Dans l'exemple de réalisation décrit ci-après, l'information donnée par l'indicateur est le quantième ou le jour du mois, le cycle étant de quatre années, et les périodes du cycle étant les différents mois de l'année. On a donc n=31, et m=3, la valeur maximale du quantième étant 28, 29, 30 ou 31 selon les mois et selon les années.In the exemplary embodiment described below, the information given by the indicator is the date or the day of the month, the cycle being four years, and the cycle periods being the different months of the year. We therefore have n = 31, and m = 3, the maximum value of the calendar being 28, 29, 30 or 31 depending on the month and the year.

Dans cet exemple de réalisation, le mécanisme d'entraînement selon l'invention est un mécanisme d'entraînement d'un indicateur de quantième perpétuel pour un calendrier grégorien, la roue entraîneuse étant une roue des dates à 31 dents agencée pour avancer d'un pas par jour, cet avancement étant appelé un avancement régulier.In this exemplary embodiment, the drive mechanism according to the invention is a drive mechanism for a perpetual calendar indicator for a Gregorian calendar, the driving wheel being a 31-tooth date wheel arranged to advance a not a day, this advancement being called a regular advancement.

Dans la présente description, l'expression « un pas supplémentaire » signifie que la roue entraîneuse avance d'un pas de plus, et ce indépendamment de tout ordre chronologique par rapport à l'avancement régulier d'un pas par jour.In the present description, the term "an additional step" means that the driving wheel moves one step further, independently of any chronological order with respect to the steady advance of one step per day.

En référence aux figures 1 à 4, il est représenté un mécanisme d'entraînement comprenant un seul premier pignon entraîneur 1 à une dent et un seul second pignon entraîneur 2 à trois dents, coaxiaux et solidaires l'un de l'autre. Ils peuvent être formés d'une seule pièce telle que représentée sur la figure 4, solidaire d'un arbre 4. Les premier et second pignons entraîneurs 1 et 2 sont alimentés en énergie par le mouvement auquel ils sont reliés cinématiquement par un pignon 6 également solidaire de l'arbre 4. Les premier et second pignons entraîneurs 1 et 2 coopèrent avec le mouvement de manière à effectuer une révolution complète par jour.With reference to Figures 1 to 4 , there is shown a drive mechanism comprising a single first toothed gear 1 to a tooth and a single second toothed gear 2 with three teeth, coaxial and integral with each other. They can be formed in one piece as represented on the figure 4 The first and second driving gears 1 and 2 are energized by the movement to which they are kinematically connected by a pinion 6 also integral with the shaft 4. The first and second driving gears 1 and 2 cooperate with the movement in order to perform a complete revolution per day.

Des ensembles de premiers et seconds pignons entraîneurs comprenant une ou plusieurs dents peuvent également être utilisés, leur vitesse de rotation étant adaptée pour que la roue entraîneuse avance du nombre de pas requis. Notamment, l'ensemble de seconds pignons entraîneurs peut comprendre plusieurs seconds pignons entraîneurs répartis à différents endroits autour de la roue entraîneuse.Sets of first and second driving gears comprising one or more teeth may also be used, their rotation speed being adapted for the driving wheel to advance the required number of steps. In particular, the set of second drive gears may comprise a plurality of second drive gears distributed at different locations around the drive wheel.

Le mécanisme comprend également une roue entraîneuse, et plus spécifiquement ici, une roue des dates 8, comprenant une première denture 10 de 31 dents agencée pour engrener avec le premier pignon entraîneur 1. Ainsi, la roue des dates 8 est entraînée d'un pas par jour par la dent du premier pignon entraîneur 1 et effectue pas à pas une révolution complète en un mois.The mechanism also comprises a driving wheel, and more specifically here, a date wheel 8, comprising a first set of 31 teeth arranged to mesh with the first driving gear 1. Thus, the date wheel 8 is driven one step per day by the tooth of the first drive gear 1 and performs step by step a complete revolution in one month.

La roue des dates 8 comprend également une seconde denture 11 agencée pour coopérer avec les moyens d'entraînement décrits ci-après.The date wheel 8 also comprises a second toothing 11 arranged to cooperate with the drive means described below.

L'axe 12 de la roue des dates 8 porte un indicateur, tel qu'une aiguille ou un disque, (non représenté) coopérant avec une graduation de trente et un figurant sur le cadran d'une pièce d'horlogerie, ledit indicateur indiquant le quantième.The axis 12 of the date wheel 8 carries an indicator, such as a needle or a disc, (not shown) cooperating with a thirty-one scale on the dial of a timepiece, said indicator indicating the date.

Il est également possible de relier la roue des dates à un indicateur disposé à un endroit quelconque du mouvement au moyen d'un train de rouages ou d'un mécanisme approprié.It is also possible to connect the date wheel to an indicator disposed at any point in the movement by means of a gear train or a suitable mechanism.

Les dents des premier et second pignons entraîneurs 1 et 2 sont disposées l'une par rapport à l'autre de sorte qu'elles ne coopèrent pas en même temps avec la roue des dates 8.The teeth of the first and second driving gears 1 and 2 are arranged relative to one another so that they do not cooperate at the same time with the date wheel 8.

Comme le montre plus particulièrement la figure 9, la roue des dates 8 comprend une surface pleine 14 dans laquelle sont prévues trois fraisures, en regard de la roue de codage 16 des mois de 30 et 31 jours et de la roue de codage 18 des mois de février de 28 et 29 jours décrits ci-après. Dans chacune de ces fraisures est placée une dent rétractable dimensionnée de sorte que chaque dent rétractable peut coulisser radialement dans la fraisure associée pour évoluer entre ses positions active et inactive telles que définies ci-dessus. Il est bien évident que les dents rétractables pourraient également évoluer entre plus que ces deux positions. Plus particulièrement, les dents rétractables pourraient avoir plusieurs positions qui feraient qu'elles peuvent agir sur d'autres roues ayant des diamètres primitifs différents.As shown more particularly in figure 9 , the date wheel 8 comprises a solid surface 14 in which are provided three countersinks, opposite the coding wheel 16 months 30 and 31 days and the encoding wheel 18 February 28 and 29 days described below. In each of these countersinks is placed a retractable tooth dimensioned so that each retractable tooth can slide radially in the countersink associated to evolve between its active and inactive positions as defined above. It is obvious that the retractable teeth could also evolve between more than these two positions. More particularly, the retractable teeth could have several positions that would make it possible to act on other wheels having different pitch diameters.

L'épaisseur de la surface pleine 14 est suffisante pour que les dents rétractables disposées dans les fraisures se positionnent sous la première denture 10 et puissent engrener avec le second pignon entraîneur 2 lorsqu'elles sont en position active.The thickness of the solid surface 14 is sufficient so that the retractable teeth disposed in the countersink are positioned under the first toothing 10 and can mesh with the second drive gear 2 when they are in the active position.

Dans la variante représentée, le mécanisme comprend trois dents rétractables 20, 21, 22, la dent rétractable 20 étant associée aux mois de 30 jours, la dent rétractable 21 étant associée au mois de février de 29 jours et la dent rétractable 22 étant associée au mois de février de 28 jours.In the variant shown, the mechanism comprises three retractable teeth 20, 21, 22, the retractable tooth 20 being associated with the months of 30 days, the retractable tooth 21 being associated with the month of February of 29 days and the retractable tooth 22 being associated with the month of February of 28 days.

Des trous oblongs 24 et 25 sont prévus à l'extrémité des fraisures pour constituer des zones dans lesquelles les dents rétractables peuvent se retirer pour être en position inactive.Oblong holes 24 and 25 are provided at the end of the countersinks to provide areas in which the retractable teeth can retract into the inactive position.

Conformément à l'invention, le mécanisme d'entraînement comprend la roue de codage 16 des mois de 30 et 31 jours et une came de codage 26, solidaire de la roue de codage 16 et associée à la dent rétractable 20. La came de codage 26 comprend une piste 28 dans laquelle peut circuler un plot 30 faisant saillie de la dent rétractable 20, en direction de la came de codage 26. La piste 28 présente une configuration faite d'un ensemble de creux et de pointes, ladite configuration étant appropriée pour que la dent rétractable 20 associée aux mois de 30 jours reste dans sa position inactive à l'intérieur de la fraisure les mois de 31 jours, et sorte de sa fraisure et passe en position active les mois de 28, 29 et 30 jours, et revienne ensuite en position inactive après avoir engrené avec le second pignon entraîneur 2.According to the invention, the drive mechanism comprises the coding wheel 16 of months 30 and 31 days and a coding cam 26, integral with the coding wheel 16 and associated with the retractable tooth 20. The coding cam 26 comprises a track 28 in which a stud 30 protruding from the retractable tooth 20 can travel in the direction of the coding cam 26. The track 28 has a configuration made of a set of recesses and points, said configuration being appropriate in order that the retractable tooth associated with the 30-day months remains in its inactive position within the countersink in the 31-day months, and thus leaves its countersink and goes into active position in the months of 28, 29 and 30 days, and then returns to the inactive position after meshing with the second drive gear 2.

Le mécanisme d'entraînement comprend également la roue de codage 18 des mois de février de 28 et 29 jours, une came de codage 32 associée au mois de février de 29 jours, associée à la dent rétractable 21 et une came de codage 34 associée au mois de février de 28 jours, et associée à la dent rétractable 22. Dans cette variante, il est prévu une seule roue de codage 18 pour porter les cames de codage 32 et 34 des mois de février, lesdites cames de codage 32 et 34 étant solidaires de ladite roue de codage 18 des mois de février de 28 et 29 jours.The drive mechanism also includes the February 28 and 29 day coding wheel 18, a 29 day February coding cam associated with the retractable tooth 21, and a coding cam 34 associated with the February 28 day, and associated with the retractable tooth 22. In this variant, there is provided a single coding wheel 18 for carrying the encoding cams 32 and 34 of February, said coding cams 32 and 34 being integral with said coding wheel 18 of the months of February of 28 and 29 days.

La came de codage 32 comprend une piste 36 dans laquelle peut circuler un plot 38 faisant saillie de la dent rétractable 21, en direction de la came de codage 32. La piste 36 présente une configuration faite de quatre secteurs circulaires et de quatre secteurs en pointe séparant les secteurs circulaires, répartis régulièrement. Cette configuration est appropriée pour que la dent rétractable 21 associée aux mois de février de 29 jours reste dans sa position inactive à l'intérieur de la fraisure les mois de 31 jours et les mois de 30 jours et sorte de sa fraisure et passe en position active les mois de février de 28 et 29 jours, et revienne ensuite en position inactive après avoir engrené avec le second pignon entraîneur 2.The coding cam 32 comprises a track 36 in which a stud 38 projecting from the retractable tooth 21 can flow in the direction of the coding cam 32. The track 36 has a configuration made up of four circular sectors and four pointed sectors. separating the circular sectors, distributed regularly. This configuration is appropriate for the retractable 21 tooth associated with the 29-day-old February to remain in its inactive position within the 31-day and 30-day months of the countersink and thus move into position activates the months of February 28 and 29 days, and then returns to the inactive position after gearing with the second drive gear 2.

La came de codage 34 comprend une piste 40 dans laquelle peut circuler un plot 42 faisant saillie de la dent rétractable 22, en direction de la came de codage 34. La piste 40 présente une configuration faite de trois secteurs circulaires et de trois secteurs en pointe séparant les secteurs circulaires, deux secteurs circulaires s'étendant régulièrement sur 180° et le troisième secteur circulaire s'étendant sur 180°. Cette configuration est appropriée pour que la dent rétractable 22 associée aux mois de février de 28 jours reste dans sa position inactive à l'intérieur de la fraisure les mois de 31 jours, les mois de 30 jours et les mois de février de 29 jours, et sorte de sa fraisure et passe en position active les mois de février de 28 jours, et revienne ensuite en position inactive après avoir engrené avec le second pignon entraîneur 2.The coding cam 34 comprises a track 40 in which a stud 42 projecting from the retractable tooth 22 can flow in the direction of the coding cam 34. The track 40 has a configuration made up of three circular sectors and three pointed sectors. separating the circular sectors, two circular sectors extending regularly over 180 ° and the third circular sector extending over 180 °. This configuration is appropriate for the retractable tooth associated with the 28-day February months to remain in its inactive position within the 31-day, 30-day, and 29-day months of the countersink. and sort of its countersink and goes into the active position in February of 28 days, and then returns to the inactive position after gearing with the second drive gear 2.

La roue de codage 18 des mois de février de 28 et 29 jours comprend une ouverture centrale 44, dimensionnée pour recevoir la came de codage 26 associée aux mois de 30 jours. Ainsi, les trois pistes 28, 36 et 40 sont sur un même plan.The encoding wheel 18 of February 28 and 29 days includes a central opening 44, sized to receive the coding cam 26 associated with the 30-day month. Thus, the three tracks 28, 36 and 40 are on the same plane.

La roue de codage 16 des mois de 30 et 31 jours, la roue de codage 18 des mois de février de 28 et 29 jours, la came de codage 26 associée aux mois de 30 jours, les cames de codage 32 et 34 associées aux mois de février de 29 et 28 jours, et la roue des dates 8 sont coaxiales à l'axe 46, les roues de codage 16 et 18 et la roue des dates 8 étant montées libres en rotation autour de cet axe 46.The coding wheel 16 of the months of 30 and 31 days, the coding wheel 18 of the months of February of 28 and 29 days, the coding cam 26 associated with the months of 30 days, the coding cams 32 and 34 associated with the months February 29 and 28 days, and the date wheel 8 are coaxial with the axis 46, the coding wheels 16 and 18 and the date wheel 8 being rotatably mounted about this axis 46.

Ainsi, le mécanisme d'entraînement selon l'invention est très compact.Thus, the drive mechanism according to the invention is very compact.

La came de codage et la roue de codage associée forment un mobile de codage qui peut être réalisé en une seule pièce ou sous la forme de deux pièces solidarisées.The coding cam and the associated coding wheel form a coding mobile that can be made in one piece or in the form of two integral parts.

Conformément à l'invention, le mécanisme d'entraînement comprend également des moyens d'entraînement agencés pour relier cinématiquement la roue des dates 8 à chacune des roues de codage 16 et 18 et agencés pour donner une vitesse de rotation adéquate aux cames de codage 26, 32, et 34 par rapport à la roue des dates 8, de sorte que :

  • pour un mois de 31 jours, aucune des dents rétractables 20, 21, 22 ne passe en position active,
  • pour un mois de 30 jours, seule la dent rétractable 20 passe en position active puis revient en position inactive, la roue des dates 8 avançant d'un pas supplémentaire pour ce mois,
  • pour un mois de février de 29 jours, les deux dents rétractables 20 et 21 passent en position active puis reviennent en position inactive, la roue des dates 8 avançant de deux pas supplémentaires pour ce mois,
  • pour un mois de février de 28 jours, les trois dents rétractables 20, 21 et 22 passent en position active puis reviennent en position inactive, la roue des dates 8 avançant de trois pas supplémentaires pour ce mois.
According to the invention, the drive mechanism also comprises drive means arranged to kinematically connect the wheel of the dates 8 to each of the coding wheels 16 and 18 and arranged to give an adequate rotational speed to the coding cams 26, 32, and 34 relative to the date wheel 8, so that:
  • for a month of 31 days, none of the retractable teeth 20, 21, 22 goes into the active position,
  • for a month of 30 days, only the retractable tooth 20 goes into the active position then returns to the inactive position, the wheel dates 8 advancing an additional step for this month,
  • for a month of February of 29 days, the two retractable teeth 20 and 21 go into active position then return to the inactive position, the wheel of the dates 8 advancing by two additional steps for this month,
  • for a month of February of 28 days, the three retractable teeth 20, 21 and 22 go into active position then return to the inactive position, the wheel of the dates 8 advancing three additional steps for this month.

Plus précisément en référence aux figures 3 et 4, les moyens d'entraînement comprennent un organe d'entraînement 50 comprenant une denture entraîneuse 52 agencée pour coopérer avec la seconde denture 11 de la roue des dates 8, une première denture d'entraînement 54 agencée pour coopérer avec la roue de codage 16 des mois de 30 et 31 jours et une deuxième denture d'entraînement 56 agencée pour coopérer avec la roue de codage 18 des mois de février de 28 et 29 jours. La denture entraîneuse 52 et les première et deuxième dentures d'entraînement 54 et 56 sont avantageusement montées solidaires sur un même arbre 58.More specifically with reference to Figures 3 and 4 , the drive means comprise a drive member 50 comprising a driving toothing 52 arranged to cooperate with the second toothing 11 of the date wheel 8, a first drive gear 54 arranged to cooperate with the coding wheel 16 of the month 30 and 31 days and a second drive gear 56 arranged to cooperate with the encoding wheel 18 February of 28 and 29 days. The driving toothing 52 and the first and second drive teeth 54 and 56 are advantageously mounted integral on the same shaft 58.

Les dimensions et nombre de dents des différents engrenages utilisés dans l'invention sont choisis pour donner aux roues de codage 16 et 18, et donc aux cames de codage 26, 32, 34 une vitesse de rotation adéquate par rapport à la roue des dates 8, de manière à ce que les dents rétractables passent en position active aux temps voulus.The dimensions and number of teeth of the various gears used in the invention are chosen to give the coding wheels 16 and 18, and thus the coding cams 26, 32, 34, an adequate rotational speed with respect to the date wheel. , so that the retractable teeth move into the active position at the desired times.

Plus spécifiquement, les dimensions et nombre de dents des différents engrenages sont choisis de sorte que, la roue des dates 8 faisant 12 tours par an, la roue de codage 16 des mois de 30 et 31 jours fait 11 tours par an, se décalant de 30° par mois de la roue des dates 8, et la roue de codage 18 des mois de février de 28 et 29 jours fait 47 tours en 4 ans, se décalant de 7,5° par mois de la roue des dates 8.More specifically, the dimensions and number of teeth of the various gears are chosen so that, the wheel of the dates 8 making 12 turns per year, the coding wheel 16 of the months of 30 and 31 days is 11 turns per year, shifting from 30 ° per month of the date wheel 8, and the coding wheel 18 February months of 28 and 29 days makes 47 laps in 4 years, shifting 7.5 ° per month from the wheel of dates 8.

Par ailleurs, les cames de codage peuvent être agencées pour donner à la roue entraîneuse la forme d'un engrenage circulaire ou non-circulaire.Furthermore, the coding cams can be arranged to give the driving wheel the shape of a circular or non-circular gear.

De plus, le mécanisme d'entraînement d'un indicateur de quantième perpétuel selon l'invention peut être associé à un mécanisme d'entraînement d'un indicateur du jour de la semaine, tel que représenté sur les figures 10 à 12. Ce mécanisme d'entraînement d'un indicateur du jour de la semaine comprend une roue des jours 60, comprenant sept dents, agencée pour coopérer avec la première denture 10 à 31 dents de la roue des dates 8.In addition, the drive mechanism of a perpetual calendar indicator according to the invention can be associated with a drive mechanism of a weekday indicator, as shown in FIG. Figures 10 to 12 . This day of the week indicator driving mechanism includes a 60-day, seven-toothed wheel arranged to cooperate with the first tooth 31 to 31 teeth of the date wheel 8.

La roue des jours 60 est solidaire en rotation d'un pignon 62, premier élément d'un train d'engrenage 64 permettant de relier cinématiquement la roue des jours 60 à un indicateur des jours de la semaine (non représenté).The wheel 60 days is integral in rotation with a pinion 62, the first element of a gear train 64 for kinematically connecting the wheel 60 days to a weekday indicator (not shown).

La roue des jours 60 et le pignon 62 sont montés pivotant sur une bascule 66 elle-même montée pivotante sur le bâti autour d'un axe AA. Il est prévu un ressort de rappel 68 appuyant sur la bascule 66 ainsi qu'un sautoir 70 permettant de maintenir en position la roue des jours 60.The 60-day wheel and the pinion 62 are pivotally mounted on a rocker 66 itself pivotally mounted on the frame about an axis AA. There is provided a return spring 68 pressing the latch 66 and a jumper 70 for holding in position the wheel 60 days.

La bascule 66 comprend un bec 72 dont la fonction sera décrite ci-après.The latch 66 comprises a spout 72 whose function will be described below.

Le mécanisme d'entraînement d'un indicateur du jour de la semaine comprend également un levier 74 monté pivotant sur le bâti autour d'un axe BB. Le levier 74 comprend un bec 76 agencé pour coopérer avec le bec 72 de la bascule 66 et lever la bascule 66 lorsque le levier 74 est levé.The drive mechanism of a day of the week indicator also includes a lever 74 pivotally mounted on the frame about an axis BB. The lever 74 comprises a spout 76 arranged to cooperate with the spout 72 of the rocker 66 and lift the rocker 66 when the lever 74 is lifted.

De plus, le levier 74 comprend une zone en saillie 78 agencée pour coopérer avec les dents rétractables 20, 21 et 22 lorsque ces dernières sont en position active.In addition, the lever 74 comprises a projecting zone 78 arranged to cooperate with the retractable teeth 20, 21 and 22 when the latter are in the active position.

Le mécanisme d'entraînement d'un indicateur du jour de la semaine est positionné de sorte que les dents rétractables 20, 21 et 22 puissent coopérer d'une part avec le second pignon entraîneur 2 et d'autre part avec ladite zone en saillie 78. A cet effet, lesdites dents rétractables 20, 21 et 22 présentent une épaisseur suffisante pour pouvoir actionner à la fois avec le second pignon entraîneur 2 et la zone en saillie 78 lorsqu'elles sont en position active.The drive mechanism of a day of the week indicator is positioned so that the retractable teeth 20, 21 and 22 can cooperate on the one hand with the second drive gear 2 and on the other hand with said protruding area 78 To this end, said retractable teeth 20, 21 and 22 have a thickness sufficient to operate both the second drive gear 2 and the protruding area 78 when in the active position.

Ainsi, le levier 74 et la bascule 66 (et donc la roue des jours 60) sont agencés pour évoluer entre deux positions, à savoir une position inactive et une position active.Thus, the lever 74 and the latch 66 (and thus the wheel of the days 60) are arranged to move between two positions, namely an inactive position and an active position.

La position inactive, telle que représentée sur les figures 10 et 11, est la position selon laquelle aucune des dents rétractables 20, 21 et 22, en position inactive, ne coopère avec le levier 74, de sorte que la roue des jours 60 engrène avec la première denture 10 de la roue des dates 8.The inactive position, as represented on the figures 10 and 11 , is the position in which none of the retractable teeth 20, 21 and 22, in the inactive position, cooperates with the lever 74, so that the wheel of the days 60 meshes with the first toothing 10 of the date wheel 8.

La position active, telle que représentée sur la figure 12, est la position selon laquelle au moins l'une des dents rétractables 20, 21 et 22, en position active, coopère avec la zone en saillie 78 du levier 74, de manière à lever la bascule 66 de sorte que la roue des jours 66 est dégagée de la première denture 10 de la roue des dates 8.The active position, as represented on the figure 12 , is the position in which at least one of the retractable teeth 20, 21 and 22, in the active position, cooperates with the projecting zone 78 of the lever 74, so as to raise the latch 66 so that the wheel of the days 66 is released from the first toothing 10 of the date wheel 8.

Il est prévu deux goupilles 80 et 82 de part et d'autre de la bascule 66 et du levier 74 permettant de limiter leur mouvement.There are two pins 80 and 82 on either side of the rocker 66 and the lever 74 to limit their movement.

Ainsi, lors des mois de 31 jours, le levier 74 reste en position inactive et est maintenu sous l'effet d'un ressort de rappel (non représenté), de sorte que la roue des jours 60 engrène avec la roue des dates 8 et est entraînée à raison d'un pas par jour pour afficher le jour. Lors des mois de moins de 31 jours, le levier 74 se lève, une fois, deux fois ou trois fois selon le nombre de jours dans le mois, sous l'action d'une, de deux ou des trois dents rétractables 20, 21, 22 en position active, ce qui a pour effet de dégager la roue des jours 60 de la roue des dates 8. Ainsi, le jour affiché reste fixe pendant que la roue des dates 8 avance du nombre de pas supplémentaires par rapport à son avancement régulier.Thus, during the months of 31 days, the lever 74 remains in the inactive position and is maintained under the effect of a return spring (not shown), so that the wheel of the days 60 meshes with the wheel of the dates 8 and is trained one step per day to display the day. In months less than 31 days, the lever 74 rises, once, twice or thrice depending on the number of days in the month, under the action of one, two or three retractable teeth 20, 21 , 22 in the active position, which has the effect of clearing the wheel 60 days of the wheel of the dates 8. Thus, the day displayed remains fixed while the wheel of the dates 8 advance number of additional steps relative to its progress regular.

Le mécanisme d'entraînement d'un indicateur du jour de la semaine permet de n'incrémenter que d'un jour l'indication du jour de la semaine, y compris les mois de moins de 31 jours.The day-of-week indicator training mechanism is used to increment the day of the week indication by one day only, including months of less than 31 days.

De plus, de par sa construction, le mécanisme d'entraînement d'un indicateur du jour de la semaine fonctionne dans les deux sens. En effet, en cas de correction en sens inverse par un utilisateur, les jours seront correctement décrémentés, en tenant compte de la longueur du mois.In addition, by virtue of its construction, the drive mechanism of a day of the week indicator operates in both directions. Indeed, in case of correction in the opposite direction by a user, the days will be correctly decremented, taking into account the length of the month.

Le fonctionnement du mécanisme d'entraînement d'un indicateur de quantième perpétuel selon l'invention est le suivant :The operation of the drive mechanism of a perpetual calendar indicator according to the invention is as follows:

Chaque jour, le premier pignon entraîneur 1 engrène avec la première denture 10 de la roue des dates 8 de sorte qu'elle avance d'un pas par jour de sorte que le quantième avance d'un pas par jour. Les dents rétractables 20, 21 et 22 sont en position inactive de sorte que le second pignon entraîneur 2 n'a aucune action sur la roue des dates 8. La roue des dates 8 avançant pas à pas, sa seconde denture 11 engrène avec la denture entraîneuse 52, entraînant à son tour les première et deuxième dentures d'entraînement 54 et 56, qui entraînent en rotation à leur tour les roues de codage 16 et 18 respectivement. Parallèlement, les dents rétractables 20, 21 et 22 étant portées par la roue des dates 8, leurs plots respectifs 30, 38 et 42 se déplacent dans leurs pistes respectives 28, 36 et 40 des cames de codage associées 26, 32 et 34.Each day, the first drive gear 1 meshes with the first toothing 10 of the date wheel 8 so that it advances one step per day so that the date advances by one step per day. The retractable teeth 20, 21 and 22 are in the inactive position so that the second drive gear 2 has no action on the wheel of the dates 8. The date wheel 8 advancing step by step, its second gear 11 meshes with the toothing 52, driving in turn the first and second drive teeth 54 and 56, which in turn rotate the coding wheels 16 and 18 respectively. Meanwhile, the retractable teeth 20, 21 and 22 being carried by the date wheel 8, their respective pads 30, 38 and 42 move in their respective tracks 28, 36 and 40 of the associated coding cams 26, 32 and 34.

En référence à la figure 5, durant les mois de 31 jours, le déplacement des plots 30, 38 et 42 des dents rétractables 20, 21, 22, dans les pistes 28, 36 et 40 lors de la rotation de la roue des dates 8, combiné à la rotation des roues de codage 16 et 18 fait que, grâce à la configuration appropriée des cames de codage 26, 32 et 34, les plots 30, 38 et 42 des dents rétractables 20, 21, 22 restent dans les creux des pistes 28, 36 et 40, de sorte que toutes les dents rétractables 20, 21, 22 sont en position inactive à l'intérieur de la roue des dates 8. De ce fait, lors du changement de date du 31ème jour du mois, un seul saut étant à effectuer, seule la dent du premier pignon entraîneur 1 engrène avec la première denture 10 de la roue des dates 8, qui n'avance que d'un seul pas, pour afficher le 1er jour du mois suivant. De même, la roue des jours 60 en prise avec la première denture 10 avance pour incrémenter d'un jour l'indicateur du jour de la semaine.With reference to the figure 5 during the months of 31 days, the displacement of the studs 30, 38 and 42 of the retractable teeth 20, 21, 22, in the tracks 28, 36 and 40 during the rotation of the wheel of the dates 8, combined with the rotation of the coding wheels 16 and 18 that, thanks to the appropriate configuration of the coding cams 26, 32 and 34, the pads 30, 38 and 42 of the retractable teeth 20, 21, 22 remain in the recesses of the tracks 28, 36 and 40 , so that all the retractable teeth 20, 21, 22 are in an inactive position inside the wheel of the dates 8. Therefore, when changing the date of the 31 st day of the month, only one jump to be made , only the tooth of the first drive gear 1 meshes with the first toothing 10 of the wheel of the dates 8, which advances only a single step, to display the 1 st day of the following month. Likewise, the 60-day wheel engaged with the first toothing 10 advances to increment by one day the day of the week indicator.

En référence à la figure 6, durant les mois de 30 jours, le déplacement des plots 30, 38 et 42 des dents rétractables dans les pistes 28, 36 et 40 lors de la rotation de la roue des dates 8, combiné à la rotation des roues de codage 16 et 18 fait que, grâce à la configuration appropriée des cames de codage 26, 32 et 34, le dernier jour du mois, soit le 30, le plot 30 de la dent rétractable 20 associée au mois de 30 jours arrive dans une pointe de la piste 28 de la came de codage 26 associée au mois de 30 jours, et les plots 38 et 42 des dents rétractables 21 et 22 restent dans les creux des pistes 36 et 40 des cames de codage 32 et 34. Ainsi, la dent rétractable 20 coulisse radialement dans sa fraisure et passe en position active pour engrener avec le second pignon entraîneur 2, les deux dents rétractables 21 et 22 restant en position inactive à l'intérieur de la roue des dates 8. De ce fait, lors du changement de date du dernier jour du mois, soit le 30, deux sauts étant à effectuer, une dent du second pignon entraîneur 2 engrène avec la dent rétractable 20 faisant avancer la roue des dates 8 d'un pas supplémentaire par rapport à l'avancement régulier de la roue des dates 8, et la dent du premier pignon entraîneur 1 engrène avec la première denture 10 de la roue des dates 8, qui avance d'un pas selon son avancement régulier, de manière à afficher le 1er jour du mois suivant. La configuration de la came de codage 26 est telle que la dent rétractable 20 reprend sa position inactive rapidement par déplacement de son plot 30 dans la piste associée 28, de sorte que le jour suivant, aucune dent rétractable n'est en position active.With reference to the figure 6 during the months of 30 days, the displacement of the studs 30, 38 and 42 of the retractable teeth in the tracks 28, 36 and 40 during the rotation of the date wheel 8, combined with the rotation of the coding wheels 16 and 18 that, thanks to the appropriate configuration of coding cams 26, 32 and 34, the last day of the month, ie 30, the stud 30 of the tooth retractable 20 associated with the month of 30 days arrives in a tip of the track 28 of the coding cam 26 associated with the month of 30 days, and the pads 38 and 42 retractable teeth 21 and 22 remain in the troughs of the tracks 36 and 40 coding cams 32 and 34. Thus, the retractable tooth 20 slides radially in its countersink and goes into active position to mesh with the second drive gear 2, the two retractable teeth 21 and 22 remaining in the inactive position inside the 8. As a result, when changing the date of the last day of the month, namely the 30, two jumps being performed, a tooth of the second drive gear 2 meshes with the retractable tooth 20 advancing the wheel of the dates 8 an additional step in relation to the regular advancement of the wheel of the dates 8, and the tooth of the first drive gear 1 meshes with the first toothing 10 of the wheel of the dates 8, which advances by one step according to its regular progress , so to display the 1st day of the following month. The configuration of the coding cam 26 is such that the retractable tooth 20 resumes its inactive position rapidly by moving its stud 30 in the associated track 28, so that the next day, no retractable tooth is in the active position.

La dent rétractable 20, en appuyant sur la zone en saillie 78 du levier 74, fait également se lever ledit levier 74 pour faire pivoter la bascule 66 et dégager la roue des jours 60 de la roue des dates 8, de sorte que le jour affiché reste fixe pendant que la roue des dates 8 avance d'un pas supplémentaire par rapport à son avancement régulier.The retractable tooth 20, by pressing on the protruding zone 78 of the lever 74, also raises said lever 74 to pivot the latch 66 and release the wheel 60 days of the wheel dates 8, so that the day displayed remains fixed while the date wheel 8 advances one step further than its regular advance.

En référence à la figure 7, durant un mois de février de 28 jours, le déplacement des plots 30, 38 et 42 des dents rétractables dans les pistes 28, 36 et 40 lors de la rotation de la roue des dates 8, combiné à la rotation des roues de codage 16 et 18 fait que, grâce à la configuration appropriée des cames de codage 26, 32 et 34, le dernier jour du mois, soit le 28, chacun des plots 30, 38 et 42 des dents rétractables 20, 21 et 22 respectivement arrive dans une pointe de sa piste respective 28, 36 et 40 de sa came de codage associée 26, 32 et 34. Ainsi, chaque dent rétractable 20, 21 et 22 coulisse radialement dans sa fraisure et passe en position active pour engrener avec le second pignon entraîneur 2. De ce fait, lors du changement de date du dernier jour du mois, soit le 28 février, quatre sauts étant à effectuer, les trois dents du second pignon entraîneur 2 engrènent avec les trois dents rétractables 20, 21 et 22 faisant avancer la roue des dates 8 de trois pas supplémentaires par rapport à l'avancement régulier de la roue des dates 8, et la dent du premier pignon entraîneur 1 engrène avec la première denture 10 de la roue des dates 8, qui avance d'un pas selon son avancement régulier, de manière à afficher le 1er jour du mois suivant. La configuration des cames de codage 26, 32 et 34 est telle que les dents rétractables 20, 21 et 22 reprennent leur position inactive rapidement par déplacement de leur plot dans la piste associée, de sorte que le jour suivant, aucune dent rétractable n'est en position active.With reference to the figure 7 during a month of February of 28 days, the displacement of the studs 30, 38 and 42 of the retractable teeth in the tracks 28, 36 and 40 during the rotation of the date wheel 8, combined with the rotation of the coding wheels 16 and with the appropriate configuration of the coding cams 26, 32 and 34, on the last day of the month, ie 28, each of the pads 30, 38 and 42 of the retractable teeth 20, 21 and 22, respectively, arrives in a the tip of its respective track 28, 36 and 40 of its associated coding cam 26, 32 and 34. Thus, each retractable tooth 20, 21 and 22 slides radially in its countersink and goes into active position to mesh with the second drive gear 2 Therefore, when changing the date of the last day of the month, February 28, four jumps to be performed, the three teeth of the second drive gear 2 mesh with the three retractable teeth 20, 21 and 22 advancing the wheel of the dates 8 by three additional steps relative to the regular advancement of the date wheel 8, and the tooth of the first pinion meshes with the coach one first toothing 10 of the date wheel 8, which advances by one step at the regular advancement, so as to display the 1st day of the next month. The configuration of the coding cams 26, 32 and 34 is such that the retractable teeth 20, 21 and 22 resume their inactive position quickly by moving their stud in the associated track, so that the next day, no retractable tooth is in active position.

Les dents rétractables 20, 21 et 22, en appuyant tour à tour sur la zone en saillie 78 du levier 74, font se lever ledit levier 74 trois fois pour faire pivoter la bascule 66 et dégager la roue des jours 60 de la roue des dates 8, de sorte que le jour affiché reste fixe pendant que la roue des dates 8 avance des trois pas supplémentaires par rapport à son avancement régulier.The retractable teeth 20, 21 and 22, by pressing in turn on the protruding area 78 of the lever 74, lift said lever 74 three times to pivot the latch 66 and release the wheel 60 days of the date wheel 8, so that the day displayed remains fixed while the date wheel 8 advances three additional steps with respect to its steady advance.

En référence à la figure 8, les années bissextiles, pour lesquelles le mois de février comprend 29 jours, le déplacement des plots 30, 38 et 42 des dents rétractables dans les pistes 28, 36 et 40 lors de la rotation de la roue des dates 8, combiné à la rotation des roues de codage 16 et 18 fait que, grâce à la configuration appropriée des cames de codage 26, 32 et 34, le dernier jour du mois, soit le 29, le plot 30 de la dent rétractable 20 associée aux mois de 30 jours arrive dans une pointe de sa piste 28 de la came de codage 26 associée au mois de 30 jours, le plot 38 de la dent rétractable 21 associée au mois de 29 jours arrive dans une pointe de sa piste 36 de la came de codage 32 associée au mois de 29 jours et le plot 42 de la dent rétractable 22 reste dans un creux de la piste 40 de la came de codage 34 associée au mois de février de 28 jours. Ainsi, les dents rétractables 20 et 21 coulissent radialement dans leur fraisure respective et passent en position active pour engrener avec le second pignon entraîneur 2, la dent rétractable 22 restant en position inactive à l'intérieur de la roue des dates 8. De ce fait, lors du changement de date du dernier jour du mois, soit le 29, trois sauts étant à effectuer, deux dents du second pignon entraîneur 2 engrènent avec les dents rétractables 20 et 21 faisant avancer la roue des dates 8 de deux pas supplémentaires par rapport à l'avancement régulier de la roue des dates, et la dent du premier pignon entraîneur 1 engrène avec la première denture 10 de la roue des dates 8, qui avance d'un pas selon son avancement régulier, de manière à afficher le 1er jour du mois suivant. La configuration des cames de codage 26 et 32 est telle que les dents rétractables 20 et 21 reprennent leur position inactive rapidement par déplacement de leur plot dans la piste associée, de sorte que le jour suivant, aucune dent rétractable n'est en position active.With reference to the figure 8 , the leap years, for which the month of February comprises 29 days, the displacement of the studs 30, 38 and 42 of the retractable teeth in the tracks 28, 36 and 40 during the rotation of the wheel of the dates 8, combined with the rotation coding wheels 16 and 18 that, thanks to the appropriate configuration of the coding cams 26, 32 and 34, the last day of the month, the 29, the pad 30 of the retractable tooth 20 associated with the months of 30 days arrives in a tip of its track 28 of the coding cam 26 associated with the month of 30 days, the pad 38 of the retractable tooth 21 associated with the month of 29 days arrives in a tip of its track 36 of the coding cam 32 associated with the 29 days and the pad 42 of the retractable tooth 22 remains in a hollow of the track 40 of the coding cam 34 associated with the month of February 28 days. Thus, the retractable teeth 20 and 21 slide radially in their respective countersink and move into active position to mesh with the second drive gear 2, the retractable tooth 22 remaining in an inactive position within the wheel of the dates 8. Thus when changing the date of the last day of the month, the 29th, three jumps being perform, two teeth of the second drive gear 2 mesh with the retractable teeth 20 and 21 advancing the date wheel 8 by two additional steps with respect to the steady advance of the date wheel, and the tooth of the first drive gear 1 meshes with the first toothing 10 of the wheel of the dates 8, which advances by one step according to its regular progress, so as to display the 1 st day of the following month. The configuration of the coding cams 26 and 32 is such that the retractable teeth 20 and 21 resume their inactive position quickly by moving their stud in the associated track, so that the next day, no retractable tooth is in the active position.

Les dents rétractables 20 et 21, en appuyant tour à tour sur la zone en saillie 78 du levier 74, font se lever ledit levier 74 deux fois pour faire pivoter la bascule 66 et dégager la roue des jours 60 de la roue des dates 8, de sorte que le jour affiché reste fixe pendant que la roue des dates 8 avance des deux pas supplémentaires par rapport à son avancement régulierThe retractable teeth 20 and 21, by pressing in turn on the protruding area 78 of the lever 74, lift said lever 74 twice to pivot the latch 66 and disengage the wheel 60 days of the wheel dates 8, so that the day displayed remains fixed while the date wheel 8 advances two additional steps compared to its regular progress

Ainsi, le mécanisme d'entraînement selon l'invention ne nécessite aucun ressort de rappel pour déplacer les dents rétractables. Il utilise donc moins d'énergie et est plus robuste que les mécanismes utilisant des ressorts de rappel.Thus, the drive mechanism according to the invention requires no return spring for moving the retractable teeth. It uses less energy and is more robust than mechanisms using return springs.

De plus, le mécanisme d'entraînement selon l'invention utilise un nombre de composants réduit, lesdits composants étant de construction simple. Le mécanisme pour entraîner un indicateur de quantième perpétuel est donc de construction particulièrement simple par rapport aux mécanismes traditionnels d'entraînement d'indicateur de quantième perpétuel. Les principaux éléments du mécanisme selon l'invention se superposent de sorte que l'on obtient un mécanisme très compact. De plus, les cames, les roues de codage et les moyens d'entraînement présentant des dentures reliés cinématiquement en permanence avec la roue des dates, le mécanisme d'entraînement selon l'invention peut être utilisé pour la correction bidirectionnelle de l'indicateur de quantième.In addition, the drive mechanism according to the invention uses a reduced number of components, said components being of simple construction. The mechanism for driving a perpetual calendar indicator is therefore of particularly simple construction compared to the traditional perpetual calendar indicator drive mechanisms. The main elements of the mechanism according to the invention are superimposed so that a very compact mechanism is obtained. In addition, the cams, the coding wheels and the drive means having teeth permanently kinematically connected to the date wheel, the drive mechanism according to the invention can be used for the bidirectional correction of the indicator of calendar.

Enfin, les pistes se trouvant sur les cames de codage permettent un positionnement précis des dents rétractables, ce qui évite à ces dernières de se déplacer en cas de choc.Finally, the tracks on the coding cams allow precise positioning of the retractable teeth, which prevents them from moving in case of shock.

Il est bien évident que la présente invention n'est pas limitée à la réalisation décrite. Notamment, le mécanisme pourrait ne comporter qu'une première dent rétractable et une première came de codage associées aux mois de 30 jours pour obtenir un indicateur de quantième annuel. Le nombre de dents rétractables peut être modifié pour réaliser d'autres types d'indicateur de quantième, tel qu'un indicateur de quantième bissextile : on a dans ce cas une deuxième dent rétractable et une deuxième came de codage associées au mois de février de 29 jours, la troisième dent rétractable et la troisième came de codage associées au mois de février de 28 jours étant supprimées. Dans ce cas, une correction manuelle est prévue pour corriger le quantième à la fin d'un mois de février de 28 jours.It is obvious that the present invention is not limited to the embodiment described. In particular, the mechanism could include only a first retractable tooth and a first coding cam associated with the months of 30 days to obtain an annual calendar indicator. The number of retractable teeth can be modified to make other types of date indicator, such as a leap date indicator: there is in this case a second retractable tooth and a second coding cam associated with the month of February of 29 days, the third retractable tooth and the third coding cam associated with the 28-day month of February being suppressed. In this case, a manual correction is scheduled to correct the date at the end of a 28-day month of February.

Il est également possible de prévoir que la roue de codage des mois de février de 28 et 29 jours soit séparée en deux roues indépendantes portant respectivement la came de codage correspondante, l'organe d'entraînement comprenant alors une denture d'entraînement supplémentaire. De même, les dentures de l'organe d'entraînement peuvent être séparées en prévoyant plusieurs organes d'entraînement ou agencées différemment mais toujours de manière à relier cinématiquement la roue des dates aux roues de codage selon des rapports de vitesse appropriés.It is also possible to provide that the coding wheel of February 28 and 29 days is separated into two independent wheels respectively carrying the corresponding coding cam, the drive member then comprising an additional drive toothing. Similarly, the teeth of the drive member may be separated by providing a plurality of drive members or arranged differently but always so as to kinematically connect the date wheel to the coding wheels in appropriate gear ratios.

Dans la présente variante, les dents rétractables sont agencées de sorte qu'elles se déplacent en translation dans leurs fraisures dans un plan horizontal x-y. Dans d'autres variantes de réalisation non représentées, les dents rétractables peuvent être agencées de sorte qu'elles se déplacent en translation selon un axe vertical z ou par rotation dans un plan horizontal x-y. Par exemple, les dents rétractables peuvent être positionnées de sorte que leur axe longitudinal soit non perpendiculaire à l'axe de rotation de la roue entraîneuse. Ces dents coopèrent avec une denture positionnée dans un plan, parallèle ou non, situé à un niveau différent du plan défini par la roue entraîneuse.In the present variant, the retractable teeth are arranged so that they move in translation in their milling in a horizontal plane xy. In other embodiments not shown, the retractable teeth may be arranged so that they move in translation along a vertical axis z or by rotation in a horizontal plane xy. For example, the retractable teeth may be positioned so that their longitudinal axis is not perpendicular to the axis of rotation of the driving wheel. These teeth cooperate with a toothing positioned in a plane, parallel or not, located at a different level of the plane defined by the driving wheel.

Dans une autre variante de réalisation non représentée, des dents rétractables supplémentaires peuvent être prévues pour circuler dans les cames de codage déjà occupées par une dent rétractable utilisée pour l'indicateur de quantième, lesdites dents rétractables supplémentaires étant utilisées pour actionner un autre mécanisme.In another alternative embodiment not shown, additional retractable teeth may be provided to circulate in the coding cams already occupied by a retractable tooth used for the date indicator, said additional retractable teeth being used to actuate another mechanism.

Dans une autre variante de réalisation non représentée, lés pignons entraîneurs peuvent être constitués par une roue similaire à la roue entraîneuse décrite ci-dessus. Dans d'autres variantes, il est également possible d'associer d'autres roues entraîneuses telles que décrites ci-dessus à la roue entraîneuse coopérant avec le premier pignon entraîneur décrite ci-dessus.In another alternative embodiment not shown, the drive pinions may be constituted by a wheel similar to the driving wheel described above. In other variants, it is also possible to associate other driving wheels as described above to the driving wheel cooperating with the first driving gear described above.

Dans l'exemple décrit ci-dessus, le mécanisme selon l'invention permet d'entraîner un indicateur de quantième perpétuel mais il est bien évident qu'il peut être utilisé pour entraîner un indicateur de toute autre information cyclique ou non cyclique. Par exemple, l'information cyclique peut être les phases de lune ou d'autres informations cycliques issues de tout type de calendrier comprenant des cycles, par exemple le calendrier grégorien. L'information non cyclique peut provenir par exemple d'un calendrier chinois, et peut être les mois. Dans ce cadre, il est prévu des jeux de cames de codage pour lesquelles chaque mois est programmé, les cames de codage étant configurées pour être changées au bout d'un certain temps. Cet intervalle de temps entre deux changements de jeux de cames de codage sera défini en fonction de la taille du système et pourra être par exemple tous les 20 à 30 ans, ou toute autre durée.In the example described above, the mechanism according to the invention allows to drive a perpetual calendar indicator but it is obvious that it can be used to cause an indicator of any other cyclic or non-cyclic information. For example, the cyclic information may be moon phases or other cyclic information from any type of calendar including cycles, for example the Gregorian calendar. Non-cyclical information may come from, for example, a Chinese calendar, and may be months. In this context, there are provided coding cam sets for which each month is programmed, the coding cams being configured to be changed after a certain time. This time interval between two changes of coding cam sets will be defined according to the size of the system and may be for example every 20 to 30 years, or any other duration.

Claims (12)

  1. A mechanism for driving an indicator for a piece of information connected to a clockwork movement and varying over several periods, during each of which said information changes by steps, up to a maximum value varying between n and n-m, said mechanism comprising:
    - a first set of first drive pinions (1) supplied with energy by the movement,
    - a drive wheel (8) comprising a first toothing (10) arranged to mesh with the first set of first drive pinions (1) to advance by n steps per period,
    - a second set of second drive pinions (2) supplied with energy by the movement, the first and second sets of drive pinions being positioned relative to one another such that they do not cooperate at the same time with the drive wheel (8),
    - m retractable teeth (20, 21, 22) carried by the drive wheel (8), each being arranged to move between at least two positions, namely an active position for meshing with one of the second drive pinions (2) of the second set of second drive pinions and advancing the drive wheel (8) by one additional step, and an inactive position for not cooperating with said second drive pinion (2),
    - coding cams (26, 32, 34), each associated with at least one retractable tooth (20, 21, 22), and coding wheels (16, 18) secured with said coding cams (26, 32, 34), the number of coding cams being comprised between 1 and m and the number of coding wheels being less than or equal to the number of coding cams, each coding cam (26, 32, 34) being associated with at least one minimum value n-x of the information, x comprised between 1 and m, for a period, and arranged both to cause the associated retractable tooth (20, 21, 22) to go from the active position to the inactive position and from the inactive position to the active position upon each period for which the maximum associated value of the information is a value comprised between n-m and n-x, and
    - drive means arranged to kinematically connect the drive wheel (8) to each of the coding wheels (16, 18) and arranged to impart an adequate speed of rotation to the coding cams (26, 32, 34) relative to the drive wheel (8), such that, when the information reaches a maximum value n-x for a period, x retractable teeth (20, 21, 22) enter the active position, then return to the inactive position, the drive wheel (8) advancing by x additional steps for that period, n, m and x being natural integers, m being ≥ 1, preferably m being ≥ 2,
    characterized in that each retractable tooth (20, 21, 22) comprises a stud (30, 38, 42) and the corresponding coding cam (26, 32, 34) associated with a maximal value n-x of the information comprises a track (28, 36, 40) in which the stud (30, 38, 42) can circulate, the track (28, 36, 40) having an appropriate configuration for the retractable tooth (20, 21, 22) to remain in its inactive position upon each period for which the associated maximal value of the information is a value comprised between n-x+1 and n, and so that the retractable tooth (20, 21, 22) moves from its inactive position toward its active position upon each period for which the associated maximal value of the information is a value comprised between n-m and n-x, and then returns to its inactive position after having cooperated with the second drive pinion (2).
  2. The mechanism according to claim 1, characterized in that the driving means comprise a drive organ (50) comprising a drive toothing (52) arranged to cooperate with the drive wheel (8) and a number of driving toothings (54, 56) equal to the number of coding wheels (16, 18), said driving toothings (54, 56) being arranged to cooperate with the coding wheels (16, 18), the drive toothing (52) and the driving toothings (54, 56) being chosen so as to obtain a suitable speed ratio between the drive wheel (8) and each of the coding cams (26, 32, 34).
  3. The mechanism according to claim 2, characterized in that the drive toothing (52) and the driving toothings (54, 56) are mounted on a same arbor (58).
  4. The mechanism according to any one of the preceding claims, characterized in that the drive wheel (8) comprises a second toothing (11) to cooperate with the drive means.
  5. The mechanism according to any one of the preceding claims, characterized in that the coding wheels (16, 18), the coding cams (26, 32, 34) and the drive wheel (8) are coaxial.
  6. The mechanism according to any one of the preceding claims, characterized in that the first and second sets of drive pinions comprise a first, second drive pinion, respectively, said first and second drive pinions (1, 2) being secured to each other.
  7. The mechanism according to any one of the preceding claims, characterized in that it comprises a first retractable tooth (20) and a first coding cam (26) associated with the 30-day months, a second retractable tooth (21) and a second coding cam (32) associated with the month of February with 29 days, and a third retractable tooth (22) and a third coding cam (34) associated with the month of February with 28 days, and in that the drive wheel (8) is a dates wheel with 31 teeth arranged to advance by one step per day.
  8. The mechanism according to claim 7, characterized in that the coding cam (26) associated with the 30-day months is secured to a coding wheel (16) for the 30- and 31-day months, and in that the coding cam (32) associated with the month of February with 29 days and the coding cam (34) associated with the month of February with 28 days are secured to a same coding wheel (18) for the month of February with 28 and 29 days.
  9. The method according to claim 8, characterized in that the drive means comprise a drive organ (50) comprising a drive toothing (52) arranged to cooperate with the dates wheel (8), a first driving toothing (54) arranged to cooperate with the coding wheel (16) for the 30- and 31-day months, and a second driving toothing (56) arranged to cooperate with the coding wheel (18) for the months of February with 28 and 29 days.
  10. The mechanism according to claim 9, characterized in that the toothings of the dates wheel (8) and drive organ (50) are such that, the dates wheel (8) performing 12 revolutions per year, the coding wheel (16) for the 30- and 31-day months performs 11 revolutions per year, shifting by 30° per month from the dates wheel (8), and the coding wheel (18) for the months of February with 28 and 29 days performs 47 revolutions in 4 years, shifting by 7.5° relative to the dates wheel (8).
  11. The mechanism according to any one of the preceding claims, characterized in that it comprises a mechanism for driving an indicator of the day of the week, said mechanism for driving an indicator of the day of the week comprising a days wheel (60) arranged to cooperate with the first toothing (10) of the drive wheel (8) when the retractable teeth (20, 21, 22) are in the inactive position, and to be released from the first toothing (10) of the drive wheel (8) when at least one of the retractable teeth (20, 21, 22) is in the active position.
  12. The mechanism according to claim 11, characterized in that the mechanism for driving an indicator of the day of the week further comprises a lever (66) on which the days wheel (60) is mounted and a control (74) cooperating with said lever, said control having a protruding zone (78) arranged to cooperate with at least one of the retractable teeth (20, 21, 22) when the latter are in the active position, so as to lift said control (74) and the lever (66) and free the days wheel (60) from the first toothing (10) of the drive wheel (8).
EP12781355.8A 2011-11-11 2012-11-09 Mechanism for driving an indicator Active EP2776894B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01803/11A CH705737B1 (en) 2011-11-11 2011-11-11 drive mechanism of an indicator of information relating to a timepiece movement.
PCT/EP2012/072229 WO2013068519A1 (en) 2011-11-11 2012-11-09 Mechanism for driving an indicator

Publications (2)

Publication Number Publication Date
EP2776894A1 EP2776894A1 (en) 2014-09-17
EP2776894B1 true EP2776894B1 (en) 2015-10-14

Family

ID=47143137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12781355.8A Active EP2776894B1 (en) 2011-11-11 2012-11-09 Mechanism for driving an indicator

Country Status (7)

Country Link
US (1) US9081368B2 (en)
EP (1) EP2776894B1 (en)
JP (1) JP6030661B2 (en)
CN (1) CN104054028B (en)
CH (1) CH705737B1 (en)
HK (1) HK1198557A1 (en)
WO (1) WO2013068519A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2843483A1 (en) * 2013-08-27 2015-03-04 Manufacture et fabrique de montres et chronomètres Ulysse Nardin Le Locle SA Date mechanism
EP3026505B1 (en) * 2014-11-27 2017-09-27 Société anonyme de la Manufacture d'Horlogerie Audemars Piguet & Cie Annual or perpetual calendar mechanism and timepiece comprising the use thereof
JP6788345B2 (en) * 2015-01-12 2020-11-25 ロレックス・ソシエテ・アノニムＲｏｌｅｘ Ｓａ A device that drives the mobile of the clock calendar mechanism
CH711749A1 (en) * 2015-11-13 2017-05-15 Gfpi Sa Calendar mechanism for timepiece.
EP3567438B1 (en) * 2018-05-09 2022-03-23 Rolex Sa Timepiece calendar system
EP3667435B1 (en) 2018-12-10 2022-06-01 Montres Breguet S.A. System for adjusting the position of a first toothed moving part relative to a support on which the first toothed moving part is pivotably mounted, and timepiece comprising such a system
IT201900004735A1 (en) * 2019-03-29 2020-09-29 La Vallee S R L Indicator device for watchmaking

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3206946C2 (en) * 1982-02-26 1985-08-08 Timex Corp., Waterbury, Conn. Gearbox for devices of the time measurement technology
CN2104461U (en) * 1991-10-25 1992-05-13 曹建业 Fully-automatic quartz clock with calendar
CH684815B5 (en) * 1993-07-15 1995-07-14 Longines Montres Comp D Mechanism annual calendar timepiece.
CH688706B5 (en) * 1995-07-28 1998-07-31 Longines Montres Comp D Annual calendar mechanism for a timepiece.
JP3081992B2 (en) * 1996-10-02 2000-08-28 セイコーインスツルメンツ株式会社 Wristwatch with calendar
EP1240559B1 (en) * 1999-12-24 2005-08-31 Belpanoram AG Annual, perpetual or centennial calendar mechanism
JP3939073B2 (en) * 2000-03-31 2007-06-27 セイコーインスツル株式会社 Clock with calendar mechanism
ATE415648T1 (en) * 2002-04-02 2008-12-15 Nardin Ulysse Sa DEVICE WITH PROGRAM WHEEL FOR THE MECHANISM OF A PERPETUAL CALENDAR AND WATCH WITH SUCH MECHANISM
EP2410389B1 (en) * 2010-07-21 2013-10-30 Blancpain S.A. Bi-directional date correction mechanism for a date mechanism. Date mechanism. Time piece.
EP2490083B1 (en) * 2011-02-17 2013-10-16 Glashütter Uhrenbetrieb GmbH Calendar mechanism programme wheel
EP2490082B1 (en) * 2011-02-17 2013-09-18 Glashütter Uhrenbetrieb GmbH Calendar mechanism
EP2490084B1 (en) 2011-02-17 2016-07-20 Glashütter Uhrenbetrieb GmbH Calendar mechanism

Also Published As

Publication number Publication date
CN104054028A (en) 2014-09-17
CN104054028B (en) 2016-12-14
JP2014535058A (en) 2014-12-25
US20140301171A1 (en) 2014-10-09
HK1198557A1 (en) 2015-05-15
JP6030661B2 (en) 2016-11-24
EP2776894A1 (en) 2014-09-17
CH705737B1 (en) 2015-12-31
CH705737A1 (en) 2013-05-15
US9081368B2 (en) 2015-07-14
WO2013068519A1 (en) 2013-05-16

Similar Documents

Publication Publication Date Title
EP2776894B1 (en) Mechanism for driving an indicator
EP2447789B1 (en) Calendar display device and calendar watch
EP1586962B1 (en) Ewiger Kalendermechanismus
EP1877872A1 (en) Timepiece with a mechanical chinese calendar
EP2362277A1 (en) On-demand time zone displayed on the main hand of a timepiece
EP1868047A1 (en) Timepiece with a calendar mechanism
EP3339973B1 (en) Date mechanism
WO2015062839A2 (en) Hijri calendar
CH712219A2 (en) Mechanism for watch movement with retrograde and jumping display.
EP3173876A1 (en) Timepiece calendar system
EP3904964B1 (en) Device for displaying a time or time-derived indication and device for indexing
EP3173878A1 (en) Timepiece calendar system
EP2124112A1 (en) Timepiece mechanism and module comprising such a mechanism
EP3602202B1 (en) Device for adjusting functions of a timepiece
EP3460588B1 (en) Date mechanism
EP3159752B1 (en) Programming mobile for clock movement
EP1734419B1 (en) Timepiece with calendar mechanismus
EP3904962B1 (en) Device for indexing and device for displaying a time or time-derived indication
CH707439B1 (en) Anti-retrograde display mechanism for a timepiece.
EP3629102B1 (en) Display mechanism with single window
EP3629101B1 (en) Timepiece display mechanism
EP4254079A1 (en) Mechanism for displaying the phases of the moon for a timepiece
CH719558A2 (en) Clock movement with a moon phase display mechanism.
CH704043A1 (en) Calendar display device for mechanical wrist watch, has direct kinematic link between disk of months and disk of days or dates for automatic indexing between inscriptions on disk of days or dates and inscriptions on dial depending on month

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140513

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602012011631

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: G04B0019253000

Ipc: G04B0019240000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: G04B 19/24 20060101AFI20150330BHEP

Ipc: G04B 19/243 20060101ALI20150330BHEP

Ipc: G04B 19/253 20060101ALI20150330BHEP

Ipc: G04B 19/02 20060101ALI20150330BHEP

REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 1198557

Country of ref document: HK

INTG Intention to grant announced

Effective date: 20150506

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GFPI S.A.

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 755591

Country of ref document: AT

Kind code of ref document: T

Effective date: 20151015

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20151014

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602012011631

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: GLN S.A., CH

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 4

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 755591

Country of ref document: AT

Kind code of ref document: T

Effective date: 20151014

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160114

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160214

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

REG Reference to a national code

Ref country code: HK

Ref legal event code: GR

Ref document number: 1198557

Country of ref document: HK

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160115

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602012011631

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E-PATENT S.A., CH

26N No opposition filed

Effective date: 20160715

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151109

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20121109

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151014

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231127

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20231127

Year of fee payment: 12

Ref country code: DE

Payment date: 20231129

Year of fee payment: 12

Ref country code: CH

Payment date: 20231201

Year of fee payment: 12