EP3043217B1 - Dispositif d'entraînement d'un mobile d'un mécanisme horloger de calendrier - Google Patents

Dispositif d'entraînement d'un mobile d'un mécanisme horloger de calendrier Download PDF

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Publication number
EP3043217B1
EP3043217B1 EP16150363.6A EP16150363A EP3043217B1 EP 3043217 B1 EP3043217 B1 EP 3043217B1 EP 16150363 A EP16150363 A EP 16150363A EP 3043217 B1 EP3043217 B1 EP 3043217B1
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EP
European Patent Office
Prior art keywords
teeth
mobile
wheel
wheels
date
Prior art date
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Active
Application number
EP16150363.6A
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German (de)
English (en)
French (fr)
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EP3043217A1 (fr
Inventor
William Carreno
Frank Vernay
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Rolex SA
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Rolex SA
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Publication of EP3043217A1 publication Critical patent/EP3043217A1/fr
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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25306—Independent date indicating devices activated by hand or by clockwork, e.g. calendar watches
    • 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

  • the invention relates to a device for driving a mobile of a calendar mechanism. It also relates to a mechanism comprising such a device. It also relates to a watch movement comprising such a device or such a mechanism. Finally, it relates to a timepiece, in particular a wristwatch, comprising such a device, such a mechanism or such a movement.
  • the annual calendars known from the prior art are traditionally equipped with one or two mobile calendar drivers which are provided to cooperate with a cam or an auxiliary month wheel.
  • This element bears the indication of the months and controls the double date jump mechanism at the end of each short month by means of any additional springs and levers.
  • Such a construction can induce a particularly delicate sequencing of operation. If the installation of a mobile calendar trainer accompanied by an energy accumulator can possibly allow the design of an instantaneous jump calendar for the passage from the months of 31 days to the following month, the double date jump to the end of 30-day months can be problematic, on the one hand, due to the sequencing of the operation of two separate kinematic chains for driving the date disc and, on the other hand, due to the additional energy that such jump requires.
  • the document US3827234 discloses a semi-trailing annual calendar, the mechanism of which implements two distinct kinematic chains for driving the date disc, without requiring either annual cam or lever.
  • a first mobile conventional calendar trainer allows, every day, a first jump of the date disc.
  • a second mobile allows an additional jump of the date disc at the end of a thirty-day month.
  • This mobile has teeth whose number and arrangement are defined such that these teeth allow the actuation of an additional tooth of the date disc at the end of a short month, and thus allow, in cooperation with the mobile conventional trainer, a double jump of the date disc.
  • Such a mechanism has the advantage of being simple with regard to cam and lever devices, in particular vis-à-vis the mechanism disclosed in the document. EP0987609 .
  • the arrangement and the number of teeth of the second mobile in fact make it possible, without any other additional device, to recognize short months from long months.
  • the kinematic drive chain of the second mobile requires an indexing device which is added to the traditional jumper of the date disc, which results in the installation of an additional spring provided to cooperate with a star. which carries the teeth of the second mobile. It is therefore very difficult to achieve the implementation of an annual calendar with instantaneous date jump on the basis of such a mechanism, on the one hand, due to the coordination required for synchronized operation of the two. drive chains for the date disc and, on the other hand, because of the energy required to allow the instantaneous drive of two separate driving wheels, each mobile in fact requiring an energy accumulator dedicated to it.
  • the month mobile is actuated by a second angular step by the second finger of the calendar wheel, and consequently drives the date disk by an additional step by means of the additional tooth of the date disc.
  • Such sequencing is made possible by the fact that the schedule is purely dragging.
  • the synchronized drive of each of the elements, in particular the date disc and the month mobile, would indeed lead to the device being blocked.
  • the aim of the invention is to provide a device for driving a calendar mobile or calendar member making it possible to remedy the aforementioned drawbacks and to improve the training devices known from the prior art.
  • the invention provides a simple, compact, reliable and robust training device, in particular for the implementation of an annual calendar with instantaneous date jump.
  • the training device according to the invention is defined by claim 1.
  • the figures 1 to 24 represent, by way of example, an embodiment of a timepiece according to the invention.
  • the timepiece is for example a wristwatch.
  • the timepiece comprises an embodiment of a watch movement 120 according to the invention, in particular a mechanical watch movement.
  • the movement includes an embodiment of a calendar mechanism 110 according to the invention, in particular an annual calendar mechanism, in particular an annual calendar mechanism of the instantaneous jump type.
  • the term “instantaneous jump calendar mechanism” is understood to mean a calendar mechanism whose transitional phase between two consecutive date displays typically lasts less than a tenth of a second, in normal operation.
  • the calendar mechanism comprises for example one or more mobile date indication, for example a disc 3 having inscriptions representative of the dates 1 to 31 or a mobile hand to come.
  • the annual calendar mechanism can also include elements indicating the month.
  • the annual calendar mechanism typically only requires one correction per year, typically a correction at the end of February.
  • the calendar mechanism 110 includes one embodiment of a training device 100 according to the invention.
  • the embodiment of the training device 100 is described in more detail below with reference to figures 1 to 9 .
  • the device makes it possible to drive the mobile 3 of the calendar watch mechanism 110, in particular the disc 3 having date indications.
  • this disc is intended to cooperate with an aperture in order to produce a display of the current date in this aperture.
  • the first finger is able to actuate the first toothing, in particular by engagement
  • the second finger is able to actuate the second toothing, in particular by engagement
  • the first toothing is able to actuate the fourth toothing, in particular by engagement
  • the third toothing is able to actuate the fifth toothing, in particular by meshing.
  • the second and third teeth are separate, that is to say that the teeth of the second teeth do not cooperate either with the fourth set of teeth or with the fifth set of teeth and the teeth of the third set of teeth cooperate with the fifth set of teeth without cooperating. with the fourth toothing.
  • the first finger 20a and the second finger 20b of the driving wheel set 2 are not movable relative to one another.
  • the fourth set of teeth 30a and the fifth set of teeth 30b of the date indication wheel set cannot be moved relative to one another.
  • the programming mobile 1 has the particularity of being placed at the interface of the calendar drive mobile 2 and the date display or date indication disc 3.
  • the programming mobile makes it possible to recognize and distinguish short months from long months.
  • the first finger 20a, the first set of teeth 10a and the fourth set of teeth 30a are arranged on a first level, in particular are arranged at the level of a first plane P1 as shown partially in the figure. figure 9 .
  • the second finger 20b and the second set of teeth 10b can be arranged on a second level, in particular be placed at the level of a second plane P2.
  • the third set of teeth 10c and the fifth set of teeth 30b can be arranged on a third level, in particular be placed at the level of a third plane P3.
  • These planes P1 and / or P2 and / or P3 are for example perpendicular to the axes of rotation 11 and 12 of the programming mobile and the drive mobile.
  • the programming mobile 1 comprises a first wheel 1a and a second wheel 1b. These two wheels are for example superimposed.
  • the first teeth are on the first wheel and the second and third teeth are on the second wheel.
  • the two wheels are advantageously linked in rotation by a link 1c, 1d, 1e, 1f, 1g, 1h, 1i allowing relative movement of the first and second wheels, that is to say that the first and second wheels are movable, in particular movable in rotation with respect to one another.
  • the first and second wheels can be pivoted on each other at their axes.
  • the first and second wheels can be arranged so as to be able to be moved relative to each other by a value of the order of the angular pitch of the first and second wheels, in particular 30 °.
  • This connection can be assimilated to a clutch at least in certain operating phases of the device.
  • the programming mobile comprises a return element 1c, such as a spring 1c, recalling the first and second wheels in a first predefined relative position, either a rest or recall position.
  • a return element 1c such as a spring 1c
  • the programming mobile may include a first stop 1d, in particular constituted by a portion of wall 1d of an opening 1i formed for example on the wheel 1a, and a second stop 1e, in particular a pin 1e.
  • first and second stops cooperate to define, when they are in contact with one another, the first predefined position of the wheel 1a relative to the wheel 1b.
  • the first and second stops may be located respectively on the first and second wheels 1a, 1b or be located respectively on the second and first wheels 1a, 1b.
  • the spring 1c and the stopper 1d may be integral with the plate of the first wheel 1a.
  • the pin 1e can be driven out on the board of the second wheel 1b.
  • the second wheel 1b can thus be angularly indexed relative to the first wheel 1a by means of the pin 1e which is pressed against the stop 1d under the effect of the spring 1c.
  • the programming mobile 1 can comprise a third stop 1g, in particular a wall 1g of an opening, or of the aforementioned opening 1i, and a fourth stop 1h, in particular a surface 1h of the return element 1c, in particular a surface 1h of one end of the return element 1c.
  • the third and fourth stops may be located respectively on the first and second wheels 1a, 1b or be located respectively on the second and first wheels 1a, 1b.
  • the first and second wheels 1a and 1b of the drive mobile are both designed to be actuated, every day, by the calendar drive mobile 2.
  • the drive mobile is provided, as seen previously two drive fingers 20a and 20b.
  • the mobile drive 2 also includes a calendar wheel 5, performing a complete rotation in 24 hours. This wheel 5 is connected to a gear train 4 of the basic movement of the timepiece.
  • the drive mobile 2 further comprises a cam 6 which is provided to cooperate with an energy accumulator, so that the drive fingers 20a and 20b can instantly drive the programming mobile 1 at midnight, c 'That is to say that the first and second fingers arrive in a start-of-gear position with the toothings of the wheels of the programming mobile, mesh with these toothings, then leave an end-of-gear position with these toothings, in a duration typically less than a tenth of a second.
  • the cam 6 can be fixed on the first and second drive fingers 20a, 20b.
  • a clutch between the calendar wheel 5 and the cam 6 can be implemented by means of conventional means, such as for example an oblong cutout shaped to cooperate with a pin, or by a locking device such as the one disclosed in the request for patent EP2428855A1 , in particular in the passage of paragraphs 16 to 21.
  • the energy accumulator may include a lever 7 provided with a roller 7a which is applied against the side of the cam 6 by a spring 8.
  • the programming mobile 1 is continuously engaged with the date display disc 3.
  • an actuation of the drive mobile in particular an actuation of the drive mobile over one revolution, induces the rotation of the date display disc 3, in particular over at least one angular step.
  • the first toothing 10a of the first wheel 1a is continuously engaged with the fourth toothing 30a of the date disc 3.
  • This fourth set of teeth can be angularly indexed relative to the frame of the movement by means of a nose 9a of a jumper 9, as shown in FIG. figure 1 .
  • the programming mobile 1 is also positioned angularly, indirectly, by the nose 9a of the jumper 9, up to the backlash.
  • the jumper can cooperate directly with the first set of teeth 1a of the first wheel. In this case, it is the disc 3 which is also positioned angularly, indirectly, by the jumper.
  • the jumper 9 can cooperate with the fourth set of teeth 30a or with the first set of teeth 10a.
  • the jumper and the return element are shaped and arranged so that the resistive torque opposing the rotation of the first wheel and exerted by the jumper is greater than the resistant torque opposing the rotation of the second wheel. and exerted by the return element, these torques being expressed around the same axis, in particular around the axis 11 of rotation of the programming mobile.
  • the date wheel set also has a fifth set of teeth 30b.
  • This fifth set of teeth can in particular comprise a single tooth.
  • This fifth set of teeth can be superimposed on the fourth set of teeth 30a as shown in figure 4 .
  • These fourth and fifth teeth are for example superimposed.
  • These fourth and fifth teeth are advantageously superimposed or located on two levels relative to the axis of rotation of the date wheel set.
  • the tooth of the fifth set of teeth 30b is capable of being actuated by the third set of teeth 10c on the 30th of a short month (that is to say of a month of 30 days).
  • the date disc 3 can be driven over two angular steps.
  • the first toothing 10a of the first wheel 1a comprises twelve teeth which are all identical.
  • the second toothing 10b of the second wheel 1b also has twelve teeth.
  • the third set of teeth comprises four teeth which are arranged to actuate the date disc. These four teeth correspond to the four short months of the year, with the exception of February. These are distributed within the second set of teeth 10b such that one or the other of these teeth is likely to meet opposite the tooth 30b on the 30th of a short month. The distribution of these teeth is explained later.
  • the teeth of the second set of teeth 10b and the teeth of the third set of teeth 10c are formed by common surfaces formed on the same part, in particular common surfaces extending parallel to the axis of rotation of the mobile. programming.
  • the surfaces constituting the teeth of the second and third teeth may be discontinuous, that is to say there may be a discontinuity between the second and third teeth.
  • the surfaces of the second and third teeth can be formed simultaneously, for example by machining, cutting or forming.
  • the second toothing can be formed on a first part and the third toothing can be formed on a second room. The first and second parts can then be assembled or attached to each other to form the second wheel.
  • the first set of teeth may have a number of teeth which is a multiple of twelve, for example 24 or 36 teeth, and / or the second set of teeth may have a number of teeth which is a multiple of twelve.
  • the third set of teeth may have a number of teeth which is a multiple of four, for example 8 or 12 teeth, and / or the fourth set of teeth may have thirty-one teeth and / or the fifth set of teeth may have one tooth.
  • the wheel 5 drives the cam 6 and accumulates the energy necessary for the instantaneous jump of the fingers 20a and 20b by charging the spring 8 through the profile of the cam 6 and the rocker 7.
  • the roller 7a reaches the top of the profile of the cam 6.
  • the figure 7 illustrates the mechanism in such a configuration. Note that the teeth 20a, 20b are out of reach of the teeth 10a, 10b.
  • the figures 8 to 12 illustrate the device during the date jump from January 30 to 31.
  • the tooth 20b of the driving mobile unit 2 actuates one of the teeth of the teeth 10b of the wheel 1b as illustrated. on the figures 8 to 10 , which induces a relative displacement between the wheel 1b and the wheel 1a by the deformation of the spring 1c under the effect of the displacement of the pin 1e.
  • This is made possible by the fact that the return torque produced by the spring 1c is appreciably less than the return torque produced by the jumper 9 of the date disc.
  • the rotation of the wheel 1b here has no effect on the date disc because the tooth 106b which is located opposite the tooth 30b of the date disc is shaped so as not to actuate the tooth 30b.
  • the thickness of the tooth 106b is defined so that this tooth can pass above the tooth 30b as shown in the figure. figure 9 .
  • the wheel 1b continues to rotate as long as the finger 20b drives the teeth 10b.
  • the figure 10 represents the finger 20b at the end of the run.
  • the spring 1c is ready to restore the accumulated energy so as to reindex the wheel 1b relative to the wheel 1a, or to return the first and second wheels to their relative rest position, at the instant, or substantially at the instant , where the finger 20a actuates one of the teeth of the teeth 10a of the wheel 1a as shown in figure 11 .
  • the figure 11 represents the tooth 20a of the driving mobile unit 2 at the instant when the latter actuates one of the teeth of the toothing 10a of the wheel 1a, which induces the rotation of the wheel 1a and of the wheel 1b, the two wheels being integral in rotation under the effect of the means 1c, 1d, 1e.
  • the rotation of the wheel 1a causes the disc 3 to jump over an angular pitch of the date disc, given that the toothing 10a is continuously engaged with the toothing 30a of the date disc as illustrated by figure 9 .
  • the figures 11 to 13 represent such a leap of the date disc. Once the jump has been completed as shown on the figure 13 , the finger 20a, held in position under the effect of the locking of the cam 6, is located in the toothing 10a so as to avoid any risk of additional jumping of the date disc.
  • the conventional date jump is achieved by the rotation of an angular pitch of the wheel 1a, which also involves the rotation of an angular pitch of the wheel 1b.
  • the mobile 1 rotates at least one angular step.
  • FIG 14 illustrates the annual calendar mechanism on September 30, just before the date jump from September 30 to October 1.
  • the mobile 1 is positioned such that a tooth 102c of the wheel 1b is able to actuate the tooth 30b of the date disc.
  • a single conformation 102b, 102c allows interaction with the fourth set of teeth and with the tooth 30b of the fifth set of teeth as shown in the figure.
  • figure 15 The actuation of the tooth 30b induces the displacement of the date disc 3 over a first angular pitch of the date disc as shown in the figures. figures 16 to 18 .
  • the movement of the date disc also causes the rotation of the wheel 1a by means of the first 10a and fourth 30a teeth which are continuously engaged.
  • the wheels 1a and 1b pivot in a synchronized manner during a first jump of the date disc to go from 30 to “31” of a short month, so that the mobile 1 rotates by a first angular step.
  • the figures 16 to 18 represent the finger 20b of the driving wheel 2 during actuation of the teeth 10b of the wheel 1b to allow the first jump of the date disc, from 30 to “31”.
  • the figures 19 to 21 represent the finger 20a of the driving wheel 2 during actuation of the teeth 10a of the wheel 1a to allow the second jump of the date disc, from "31" to the 1st of the following month.
  • the figure 22 illustrates the mechanism once the double date jump has been made.
  • the finger 20a held in position under the effect of the locking of the cam 6, is located in the toothing 10a so as to avoid any risk of the date disc jumping further.
  • the angular displacement of the date disc is a function of the angular displacement of the mobile 1, namely the angular displacement of the wheels 1a and 1b relative to the frame of the movement. If a conventional date jump is achieved by rotating one angular step of wheel 1a, which also involves rotating one angular step of wheel 1b, a double date jump at the end of a short month involves the rotation of the mobile 1, namely the rotation of the wheels 1a and 1b over two angular steps of the mobile 1.
  • the conformations 102b, 102c and 103b, 103c and 104b, 104c and 105b, 105c are thicker than the conformations 101b and 106b to 112b constituting the teeth of the second set of teeth.
  • the conformations 102b, 102c and 103b, 103c and 104b, 104c and 105b, 105c can interact with the tooth 30b.
  • the teeth of the third set of teeth could have a different geometry from that of the teeth of the second set of teeth.
  • the third toothing could have a head diameter different from that of the second toothing.
  • the fifth toothing could also have a head diameter different from that of the fourth toothing.
  • the table of the figure 24 illustrates the cycle of rotations of wheel 1b over the course of a year, and highlights the teeth of the second and third teeth which appear opposite tooth 30b of the date disc every 30th of the month.
  • Columns J, F, M, A, M, J, J, A, S, O, N, D respectively represent the twelve months (M) of the year in chronological order.
  • the lines indicate the dates (Q) of the month (M) of the year.
  • the month of February can be considered as a short month which consists of 30 days, although an adjustment will have to be made.
  • the wheels 1a and 1b are provided with external toothings 10a, 10b, 10c which are provided to cooperate with internal toothings 30a, 30b of the date display mobile 3.
  • the teeth 30a, 30b of the date display disc 3 can be in the form of external teeth.
  • the mobile 3 may for example have the shape of a disc or of a wheel on which is attached a display hand for the indication of the dates.
  • the programming mobile 1 and / or the mobile 3 can be provided to actuate a mechanism for displaying a “big date”.
  • the profiles of the teeth 10a, 10b and 10c are identical.
  • the profiles can of course differ so as to be optimized respectively with respect to the elements 20a, 30a and 20b, 30b with which they cooperate.
  • the angular indexing element 9 is provided to cooperate with the teeth 30a of the date disc 3.
  • this indexing element can be provided to cooperate with the wheel 1a.
  • Such a configuration can be advantageous for a wheel 1a provided with internal toothing 10a.
  • a month display can for example be implemented by a device comprising a month display disc kinematically linked to the date display disc.
  • the month display device may be as described in patent applications EP2428856 and EP2624075 .
  • the training device according to the invention is particularly simple, like the device disclosed in the application. EP1596261 .
  • the drive device according to the invention uses a reduced number of parts, and is based on a single kinematic chain for driving the date disc.
  • the drive device according to the invention also has the advantage of being particularly compact, and of implementing a particularly simple date disc structure.
  • the term “mobile” means an organ or a set of parts or a mechanism capable of moving or of moving. The various parts of the assembly or of the mobile are movable with respect to each other and with respect to the other parts of the device. In this document, in “programming mobile”, the term “mobile” does not mean a single wheel or a single disc.
  • the date mobile 3 is formed by a single part.
  • the drive mobile 2 is formed by a single piece.

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  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
EP16150363.6A 2015-01-12 2016-01-07 Dispositif d'entraînement d'un mobile d'un mécanisme horloger de calendrier Active EP3043217B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16150363.6A EP3043217B1 (fr) 2015-01-12 2016-01-07 Dispositif d'entraînement d'un mobile d'un mécanisme horloger de calendrier

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15150853 2015-01-12
EP16150363.6A EP3043217B1 (fr) 2015-01-12 2016-01-07 Dispositif d'entraînement d'un mobile d'un mécanisme horloger de calendrier

Publications (2)

Publication Number Publication Date
EP3043217A1 EP3043217A1 (fr) 2016-07-13
EP3043217B1 true EP3043217B1 (fr) 2021-10-13

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US (1) US9471038B2 (zh)
EP (1) EP3043217B1 (zh)
JP (1) JP6788345B2 (zh)
CN (1) CN105785744B (zh)

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EP3608729A1 (fr) * 2018-08-09 2020-02-12 Rolex Sa Dispositif de calendrier horloger
EP3644130B1 (fr) * 2018-10-22 2021-04-07 Dubois & Depraz S.A. Mecanisme de quantieme
EP3667435B1 (fr) * 2018-12-10 2022-06-01 Montres Breguet S.A. Systeme de reglage de la position d'un premier mobile dente par rapport a un support sur lequel le premier mobile dente est monte pivotant et piece d'horlogerie comprenant un tel systeme
CH716983A1 (fr) * 2019-12-20 2021-06-30 Mft Dhorlogerie Audemars Piguet Sa Mécanisme horloger destiné à être entraîné suivant un nombre de pas variable.

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CH704505A2 (fr) * 2011-02-17 2012-08-31 Glashuetter Uhrenbetrieb Gmbh Mécanisme de calendrier.
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Publication number Publication date
CN105785744B (zh) 2020-03-13
EP3043217A1 (fr) 2016-07-13
JP6788345B2 (ja) 2020-11-25
CN105785744A (zh) 2016-07-20
JP2016130729A (ja) 2016-07-21
US9471038B2 (en) 2016-10-18
US20160202664A1 (en) 2016-07-14

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