EP3584643A1 - Augenblicklich schaltende steuervorrichtung für datumsanzeige von uhren - Google Patents

Augenblicklich schaltende steuervorrichtung für datumsanzeige von uhren Download PDF

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Publication number
EP3584643A1
EP3584643A1 EP18178458.8A EP18178458A EP3584643A1 EP 3584643 A1 EP3584643 A1 EP 3584643A1 EP 18178458 A EP18178458 A EP 18178458A EP 3584643 A1 EP3584643 A1 EP 3584643A1
Authority
EP
European Patent Office
Prior art keywords
toothed wheel
trigger
date
cam
drive
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.)
Granted
Application number
EP18178458.8A
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English (en)
French (fr)
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EP3584643B1 (de
Inventor
Gilles Rey-Mermet
Nicolas Goy
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.)
Manufacture dHorlogerie Audemars Piguet SA
Original Assignee
Manufacture dHorlogerie Audemars Piguet 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 Manufacture dHorlogerie Audemars Piguet SA filed Critical Manufacture dHorlogerie Audemars Piguet SA
Priority to EP18178458.8A priority Critical patent/EP3584643B1/de
Priority to CN201910315336.XA priority patent/CN110618597B/zh
Priority to US16/408,269 priority patent/US11429066B2/en
Priority to JP2019110289A priority patent/JP7393135B2/ja
Publication of EP3584643A1 publication Critical patent/EP3584643A1/de
Application granted granted Critical
Publication of EP3584643B1 publication Critical patent/EP3584643B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25373—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by an energy source which is released at determined moments by the clockwork movement
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25373—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by an energy source which is released at determined moments by the clockwork movement
    • G04B19/25386—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by an energy source which is released at determined moments by the clockwork movement manually corrected at the end of months having less than 31 days
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • 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

Definitions

  • the present invention relates to an instantaneous date control device for a date display of a timepiece, in particular for a date display of a mechanical wristwatch, according to the preamble of claim 1 as well as a watch movement, respectively a timepiece comprising such an instantaneous date control device.
  • date displays of the instant change type are known in watchmaking. These displays make it possible to avoid the disadvantages of date displays of the dragging date change type which are normally of rather simple construction but only produce a more or less slow change of date, therefore clearly perceptible by the user. This is also manifested in the fact that the date displayed is no longer centered in the date window for several minutes or hours, when the date disc shifts.
  • the date displays of the instantaneous change type are equipped with a more complex mechanism enabling the date change to be made by an instantaneous rotation of the date disc, that is to say by a jump. snapshot that normally occurs every day at midnight.
  • This kind of instantaneous date display is, moreover, known from the document.
  • 1,673,663 which discloses an instantaneous date mechanism comprising a first mobile carrying a cam which is free to rotate over a limited angular range, a control lever applied by a first spring to said cam, and an actuation lever driven by said control lever and making it possible to rotate by the 'via a drive finger step by step a date disc.
  • Said actuation lever is equipped with a sliding guide in which is housed a pin fixedly mounted on a bridge of the corresponding timepiece and the drive finger, articulated on the actuation lever, is prestressed by a second spring towards the date disc.
  • the German patent DE 10 2015 011 324 describes a mechanism similar to that disclosed by the document FROM 1,673,663 and likewise comprising a first mobile carrying a cam, but having more than a second mobile on which is fixed a pin which, instead of being fixed on a bridge as in the mechanism according to the document FROM 1,673,663 , is housed eccentrically in a sliding guide of a drive lever. Furthermore, the mechanism according to the document DE 10 2015 011 324 combines the control lever and the mechanism actuation lever according to the document FROM 1,673,663 in a piece called the date trigger rocker. And the sliding guide provided in the mechanism according to the document FROM 1,673,663 on the actuating lever is arranged in the mechanism according to the document DE 10 2015 011 324 on said drive lever. The latter is mounted in this case, by removing the second spring preloading the drive finger of the mechanism according to the document FROM 1,673,663 , pivotally on the date trigger lever to move the drive lever away from the date disc and bring it closer by means of said sliding guide
  • This mechanism allows an instantaneous date display and partially avoids the problem to which other mechanisms are also affected. Similar, namely that a manual correction of the hours and / or the date using the crown of the corresponding timepiece during "prohibited hours of manual correction" can lead, depending on the exact circumstances, to a malfunction, even damage, of the date mechanism. On the other hand, it does not completely solve this problem because a manual correction is not possible during the instantaneous change of the date.
  • guidance of the path of the mechanism drive lever according to the document DE 10 2015 011 324 by sliding, also present in the mechanism according to the document FROM 1,673,663 does not seem optimal.
  • the object of the present invention is therefore to remedy the aforementioned drawbacks of the known devices and to make available an instantaneous date control device for the watchmakers' date displays which also makes it possible to minimize the torque gain on the watch movement.
  • effective protection of the date disc against a double jump a possibility of manual correction of the hours and / or the date using the crown of the corresponding timepiece, in particular a setting the time anti-clockwise and rapid correction of the date, without any time range restriction, that is to say without "prohibited manual correction hours", and without risk of damage to the device, as well as an optimized trajectory of moving parts during operation of the device.
  • These objectives should be achieved by ensuring a relatively space-saving and modular construction which should also lend itself to extra-flat movements as well as reliable operation of the device.
  • the present invention provides an instantaneous date control device for a watchmaker date display of the aforementioned type, in particular for a mechanical timepiece, which is distinguished by the characteristics set out in claim 1, as well as a movement watchmaker, respectively a corresponding timepiece comprising such a device.
  • the scale mobile further comprises a pivot axis placed eccentrically on said second toothed wheel and said trigger and drive rocker is entirely pivotally mounted around said pivot axis on said second toothed wheel, so that said second gear wheel allows said pivoting axis of the trigger and drive lever to rotate by rotation so as to place the drive finger of the lever triggering and driving behind a tooth of the date disc just before each instantaneous jump as well as placing it at the outer periphery of the trajectory of the teeth of the date disc after each instantaneous jump.
  • the instantaneous date device is designed so as to allow an instantaneous change of the date indication while guaranteeing a low torque gain on the watch movement, due to the distribution of the torque gain over a maximum duration of the day as well as the instantaneous release of the accumulated energy.
  • the replacement of the sliding guide according to the patent DE 10 2015 011 324 by a pivot axis placed eccentrically on the second toothed wheel of the device according to the present invention, while arranging the trigger and drive lever on the second toothed wheel instead of placing it on a bridge allows an optimized trajectory of the different parts of the device.
  • the drive finger is arranged retractably with respect to the trigger and drive lever in order to allow the correction of the date by a rapid correction means of date of the corresponding timepiece.
  • the drive finger is formed either by a separate piece pivotally mounted on the trigger and drive rocker or by a flexible piece mounted on or formed in one piece with the trigger and drive rocker.
  • the trigger and drive lever comprises a preload spring exerting a force on the drive finger preloading it in its normal operating position towards the teeth located on the date disc.
  • the triggering and driving force of the triggering and driving spring and the preloading force of the preloading spring typically do not have the same threshold, so that the presence of the preloading spring in the device control according to the present invention has the additional advantage of allowing improved comfort of use, as will be more clearly explained below.
  • the first mobile and / or the second mobile of the device can be the subject of alternative arrangements, more specifically by using a unidirectional declutching means arranged, either on the first gear, that is between the first gear and the cam.
  • a unidirectional declutching means arranged, either on the first gear, that is between the first gear and the cam.
  • An instantaneous date control device is intended to be integrated in a timepiece equipped with a date display, in particular in a wristwatch provided with a mechanical watch movement.
  • the device can also be used in a timepiece equipped with a watch movement of another type, for example a quartz movement, so that the following explanations apply equally to all these cases.
  • the instantaneous date control device for a date display comprises a date disc 1, a gear train 2 forming a kinematic connection between the instantaneous control device and a basic clockwork movement of the piece d corresponding clock, a first mobile 3, the cam mobile, a second mobile 4, the rocking mobile, a trigger and drive rocker 4.3, a trigger and drive spring 5, and a holding means 6.
  • these components can be mounted on a bridge or a frame of the basic watch movement of the corresponding timepiece or, in the case of modular construction, on a bridge or a frame of a module instantaneous calendar which can then be placed as a block on the basic watch movement. Since the structure and operation of the device are identical in the two cases, the following explanations apply equally to these cases.
  • the watchmaker typically speaks of date disc 1, this latter is typically produced by a ring on which the dates from 1 to 1 are written. 31 and which is provided on its inner periphery with a toothing comprising an adequate number of teeth, normally 31 teeth.
  • these teeth are, in the control device according to the present invention, produced by more or less asymmetrical saw teeth.
  • the gear train 2 which forms the kinematic connection between the instantaneous control device and the basic clockwork movement of the corresponding timepiece may for example consist, as visible by way of example in FIGS.
  • first intermediate pinion 2.1 driven by an hour wheel, shown in Figures 1a and 1b in the center of the date disc 1, and in a second intermediate pinion 2.2 being in gear with the first intermediate pinion 2.1.
  • the hour wheel rotates clockwise at the speed of two revolutions per day, so that the first intermediate gear 2.1 rotates counterclockwise and the second intermediate gear 2.2 rotates clockwise, as symbolically indicated by arrows at the figure 1b .
  • the first and second intermediate pinions 2.1, 2.2 also have a speed reduction function so that the first and second mobiles 3, 4 rotate at the speed of one revolution per day.
  • the first mobile 3, the cam mobile comprises a first toothed wheel 3.1 driven by said gear train 2 at the speed of one revolution per day and a cam 3.2 mounted in free rotation, over a limited angular range and / or in a single direction of rotation, on said first gear 3.1 and also temporarily coupled in rotation to said first gear 3.1, so that the cam 3.2 is driven by the first gear 3.1, due to its freedom rotating in a limited angular range and / or in a single direction of rotation, discontinuously at the speed of one revolution per day.
  • the first gear 3.1 and therefore the cam normally rotate counterclockwise.
  • the cam 3.2 is mounted so as to rotate freely, over a limited angular range, on said first toothed wheel 3.1 as well as temporarily coupled in rotation to said first toothed wheel 3.1 by means of a guide groove 3.1.1 substantially in the form of a semi-circular arc arranged on the first toothed wheel 3.1 as well as a pin 3.2.1 fixed on the cam and housed in said guide groove 3.1.1, or vice versa.
  • said cam 3.2 is rotatably mounted on said first gear 3.1 about an eccentric axis of rotation 3.1.2 relative to the axis of rotation of the first gear 3.1, said guide groove 3.1.1 substantially in the form of a semi-circular arc being also also centered around said eccentric axis of rotation 3.1.2.
  • the cam 3.2 is mounted so as to rotate freely, over a limited angular range, on said first toothed wheel 3.1 as well as temporarily coupled in rotation to said first toothed wheel 3.1 by means of a guide groove 3.1.4.1 substantially in the form of a circular arc sector arranged on the first toothed wheel 3.1, this sector preferably having an angular extent situated in the range from 25 ° to 65 °, as well as a pin 3.2.1 fixed on the cam and housed in said guide groove 3.1.4.1, or vice versa.
  • the first gear 3.1 is separated into two parts, namely a ring 3.1.3 of the first gear driven counterclockwise by said gear train 2 and a disc 3.1.4 of the first gear wheel.
  • the disc 3.1.4 comprises said guide groove 3.1.4.1 and is housed inside the ring 3.1.3 in a freely rotatable manner, but kinematically linked to the ring 3.1.3 by a one-way declutching means arranged on these two parts 3.1.3, 3.1.4 of the first toothed wheel 3.1.
  • the ring 3.1.3 comprises a hook 3.1.3.1 of the one-way declutching means and the disc 3.1.4 comprises a drive shoulder 3.1.4.2 corresponding to the one-way declutching means, so that the drive of the ring 3.1.3 anti-clockwise also causes the drive 3.1.4 of the first gear 3.1 as soon as the hook 3.1.3.1 of the ring 3.1.3 comes into contact with the shoulder d drive 3.1.4.2 of the disc 3.1.4.
  • a training of the ring 3.1.3, that is to say of the first gear 3.1, clockwise causes a disengagement of the unidirectional disengaging means, so that the disc 3.1.4 is not driven in this case.
  • the cam 3.2 is rotatably mounted on said first gear 3.1 coaxially with respect to the axis of rotation of the first gear 3.1.
  • the cam 3.2 is driven counterclockwise by the first toothed wheel 3.1, that is to say that it is temporarily coupled in rotation to the first toothed wheel 3.1, while it can rotate freely, in particular anti-clockwise, over an angular range limited by the guide groove 3.1.4.1 in the form of a sector of an arc of a circle, therefore over an angular range going from approximately 25 ° to 65 °.
  • the cam 3.2 could even rotate, counterclockwise and due to the presence of the unidirectional declutching means, completely freely relative to the ring 3.1.3, but causes the disc 3.1.4 when the relative rotation between cam 3.2 and disc 3.1.4 exceeds the angular range limited by the guide groove 3.1.4.1 on disc 3.1.4. In this case, due to the disengagement of the unidirectional disengagement means, the rotation of the disc 3.1.4 counterclockwise does not cause rotation of the ring 3.1.3.
  • the cam 3.2 is mounted so as to rotate freely, in a single direction of rotation, on said first toothed wheel 3.1 as well as temporarily coupled in rotation to said first toothed wheel 3.1 by means of 'a one-way declutching means 3.1.5, 3.2.2 arranged between the first toothed wheel 3.1 and the cam 3.2.
  • the first toothed wheel 3.1 comprises a drive shoulder 3.1.5 of the unidirectional declutching means and the cam 3.2 comprises a hook 3.2.2 corresponding to the unidirectional declutching means, so that the drive of the first toothed wheel 3.1 counterclockwise also causes the drive of the cam 3.2 as soon as the drive shoulder 3.1.5 of the first toothed wheel 3.1 comes into contact with the hook 3.2.2 of the cam 3.2, while driving the first toothed wheel 3.1 clockwise causes a disengagement of the one-way declutching means, so that the cam 3.2 is not not driven in this direction of rotation.
  • the cam 3.2 is rotatably mounted on said first gear 3.1 coaxially with respect to the axis of rotation of the first gear 3.1.
  • the cam 3.2 is driven counterclockwise by the first gear 3.1, that is to say that it is temporarily coupled in rotation to the first gear 3.1, as soon as the drive shoulder 3.1.5 of the first gear 3.1 comes into contact with the hook 3.2.2 of the cam 3.2 and the cam 3.2 can rotate freely, without considering the other parts of the device , counterclockwise, this also due to the disengagement of the unidirectional disengagement means 3.1.5, 3.2.2.
  • the cam 3.2 is also mounted so as to rotate freely, in a single direction of rotation, on said first toothed wheel 3.1 as well as temporarily coupled in rotation to said first toothed wheel 3.1 by means of a one-way declutching means 3.1 .5, 3.2.2 arranged between the first toothed wheel 3.1 and the cam 3.2.
  • This embodiment then has the same construction principle as the third embodiment of the first mobile, but having a minimum height is specifically adapted to integration in extra-flat movements, as seen in particular on the figure 2l .
  • the second mobile 4 the tilting mobile, comprises a second gear 4.1 driven by means of said first gear 3.1 at the speed of one revolution per day.
  • the direction of rotation of the second toothed wheel 4.1 of the second mobile 4 is, as symbolically indicated by an arrow at the figure 1b , opposite that of said first gear 3.1 of the first mobile 3.
  • the second gear 4.1 is driven directly by the first gear 3.1, but it is obviously possible to provide intermediate wheels ensuring a suitable kinematic link between the first gear 3.1 and the second gear 4.1.
  • the trigger and drive lever 4.3 carries a probe 4.4 resting on said cam 3.2 mounted on the first toothed wheel 3.1 of the first mobile 3 and serving as trigger finger as well as giving the angular orientation of the lever. triggering and driving 4.3 with respect to the other parts of the device. Said trigger and drive lever 4.3 also carries a drive finger 4.5 which can come into engagement with the teeth 1.1 located on the date disc 1 in order to drive the latter step by step. In addition, said trigger and drive lever 4.3 carries a hooking means 4.7, for example a pin, on which the trigger and drive spring 5 is supported.
  • the trigger and drive spring 5 is mounted on a bridge or the frame of the corresponding timepiece, or even of an instantaneous date module, and exerts on said hooking means 4.7 of the trigger lever and d 'drive 4.3 a prestressing force capable of pressing the probe 4.4 against the cam 3.2 of the first mobile 3.
  • the trigger and drive spring 5 stores enough energy to ensure an instantaneous jump of the date disc 1.
  • the holding means 6 indicated that symbolically at the figure 1b and produced for example by a jumper or any other suitable elastic means, ensures the angular position of the date disc 1 between two instantaneous jumps.
  • the pressing force exerted by the holding means 6 is chosen so that the date disc 1 cannot jump under the effect of an external shock, but nevertheless allowing one and only one instantaneous jump of the disc. date 1 under the effect of said drive finger 4.5 as well as a possible rapid correction of the date.
  • the elasticity of the drive finger 4.5 of the trigger and drive lever 4.3 is optional security.
  • the instantaneous control device is distinguished, in particular, from the fact that the tilting mobile 4 also comprises a pivot axis 4.2 placed eccentrically on said second toothed wheel 4.1.
  • Said trigger and drive lever 4.3 is entirely pivotally mounted around this pivot axis 4.2 on said second gear 4.1, so that said second gear 4.1 allows said pivot axis 4.2 to be rotated by the trigger and training lever 4.3 so as to place the drive finger 4.5 of the trigger and training lever 4.3 behind a tooth 1.1 of the date disc 1 just before each instantaneous jump as well as placing it in outer periphery of the path of the teeth 1.1 of the date disc 1 after each instantaneous jump.
  • the cooperation between the first gear 3.1, the cam 3.2 mounted on said first gear 3.1 and the probe 4.4 of the trigger and drive lever 4.3 makes it possible to tension the trigger and drive spring 5 when the lever trigger and drive 4.3 is distant, respectively its drive finger 4.5 is placed outside the path of the teeth 1.1 of the date disc 1 as well as instantly release the energy accumulated by the trigger spring and d drive 5 when the rocker trigger and drive 4.3 is brought closer, respectively its drive finger 4.5 is momentarily placed behind a tooth 1.1 of the date disc 1 in order to cause a switching of the position of the date disc 1 by an instantaneous jump.
  • this drive finger 4.5 is arranged in a retractable manner with respect to the trigger and drive lever 4.3 in order to allow the correction of the date by means of rapid correction of the date of the corresponding timepiece.
  • the drive finger 4.5 can be formed by a separate piece pivotally mounted on the trigger and drive lever 4.3, as illustrated schematically and by way of example in FIGS. 1a and 1b, 3a and 3b as well as 3d and 3e.
  • the drive finger 4.5 can be formed by a flexible part mounted on or formed in one piece with the trigger and drive lever 4.3, as illustrated schematically and by way of example at figures 3g and 3h as well as 3d and 3k.
  • the drive finger 4.5 can be equipped with a stop cooperating with a limiting shoulder arranged on the trigger and drive lever 4.3 so as to limit the pivoting of the drive finger 4.5 to an angular range desired, as also visible in Figures la and 1b, 3a and 3b, 3d and 3e as well as 3g and 3h.
  • this lever 4.3 comprises, in a particularly preferred and advantageous manner, a preload spring 4.6 exerting a preload force on the finger 4.5 which preloads it towards the teeth 1.1 located on the date disc 1.
  • the preload force of the preload spring 4.6 on the trigger and drive lever 4.3 is chosen so as to be able to secure, in cooperation with the holding means 6, the angular position of the date disc 1 just after each instantaneous jump, in order to avoid any unexpected movement of the date disc 1, as will become clearer in the following description.
  • the probe 4.4 located on the trigger and drive lever 4.3 is still equipped with a wheel 4.4.1 mounted for rotation on the free end of said probe 4.4 in order to reduce the friction between the probe 4.4 of the rocker 4.3 and the cam 3.2 of the first mobile 3.
  • the 3d and 3f figures show a second embodiment of the trigger and drive lever 4.3 which is not fitted with a wheel on the probe 4.4, but which has a minimum height and is therefore specifically adapted for integration into movements extra-flat, as visible especially on the figure 3f .
  • the figures 3g and 3k show a third embodiment of the trigger and drive lever 4.3 which is equipped with a drive finger 4.5 formed in one piece with the lever 4.3.
  • the different parts of the trigger and drive lever 4.3 cannot be in physical contact.
  • the finger joins this limiting shoulder only during the jump, under the effect of the force to be provided to move the date disc.
  • this embodiment is specifically adapted to integration into extra-flat movements.
  • the components described above of the various embodiments of an instantaneous date control device according to the present invention can be manufactured by traditional means, such as milling, cutting, stamping, bar turning, and / or electrochemical processes, but they can also be manufactured using non-traditional materials and processes such as silicon, machined by the Deep Reactive Ion Etching (DRIE) process, the nickel machined by electroforming, for example using the UV-Liga process, or by 3D printing.
  • DRIE Deep Reactive Ion Etching
  • the hour wheel of the basic timepiece movement of this timepiece drives the gear train 2 which in turn rotates the first gear 3.1 at the speed of one revolution per day counterclockwise.
  • the cam 3.2 mounted on the first toothed wheel 3.1 and due to its rotational freedom in a limited angular range and / or in a single direction of rotation, is then driven, according to the explanations given above with respect to the different forms of 'execution of the first mobile 3, discontinuously at the speed of one revolution per day in an anti-clockwise direction.
  • the trigger and drive lever 4.3 whose probe 4.4 is applied against the spiral peripheral surface of the cam 3.2, then tightens the trigger and drive spring 5.
  • the first toothed wheel 3.1 rotates the second gear wheel 4.1 of the second mobile 4 at the speed of one revolution per day clockwise, so as to move by rotation said pivot axis 4.2 of the trigger and drive lever 4.3 and thus placing the drive finger 4.5 of the trigger and drive lever 4.3 behind a tooth of the date disc 1 just before each instantaneous jump and to place it at the outer periphery of the trajectory of the teeth of the date disc 1 after each instantaneous jump.
  • An instantaneous jump of the date disc 1 occurs when the probe 4.4 of the trigger and drive lever 4.3 arrives on the steep, or even almost radial, side of the cam 3.2 and, using the energy accumulated by the trigger and drive spring 5 sufficient to ensure an instantaneous jump of the date disc 1, advances the cam 3.2 instantaneously in the counterclockwise direction.
  • the cam 3.2 is then and temporarily remains in an advanced angular position relative to the first toothed wheel 3.1, which is possible thanks to the guide groove 3.1.1, 3.1.4.1 and / or thanks to the unidirectional declutching means arranged on the two parts 3.1.3, 3.1.4 of the first gear 3.1, respectively between the first gear 3.1 and the cam 3.2 of the first mobile 3.
  • Continuous drive by the hour wheel and the gear train 2 then causes the first gear 3.1 to advance until the cam 3.2 is again temporarily coupled in rotation with this first gear 3.1, so that the cycle begins again.
  • the drive finger 4.5 remains, while being brought back, between two teeth 1.1 of the date disc 1 during the operating steps of the device illustrated in figures 4a to 4c , then gradually moves away from the teeth, respectively from the date disc 1, as visible on the figures 4d and 4th , to then position itself behind the next tooth 1.1 of the date disc 1 which will be used for its next instantaneous switching, as visible on the figures 4f and 4g .
  • the fact that the drive finger 4.5 remains temporarily between two teeth of the date disc 1 following each instantaneous jump produces an additional advantage of an instantaneous control device according to the present invention.
  • the prestressing spring 4.6 the primary function of which is to exert a prestressing force on the drive finger 4.5 to prestress it in the direction of the teeth 1.1 located on the date disc 1
  • the prestressing force of this prestressing spring 4.6 on the trigger and drive lever 4.3 is in this case chosen in a corresponding manner, moreover as a function of the arrangement of the holding means 6.
  • the first embodiment of the first mobile 3 this is possible thanks to the guide groove 3.1.1 substantially in the form of a semi-arc of a circle and the eccentric axis of rotation 3.1.2 on the first toothed wheel 3.1 as well as thanks to the corresponding shape of the peripheral surface of the cam 3.2 which have the effect that the cooperation between the cam 3.2 and the trigger and drive lever 4.3 during a backward correction produces a trajectory of the finger 4.5 drive left out of contact with the teeth 1.1 of the date disc 1.
  • the unidirectional declutching means arranged either on the first toothed wheel 3.1 or between the first toothed wheel 3.1 and the cam 3.2.
  • a backward correction produced in these embodiments of the first mobile 3 simply a disengagement of the unidirectional disengagement means, so that the cam 3.2 is not driven and that a rotation of the trigger rocker and drive 4.3 during a backward correction produces a trajectory of the drive finger 4.5 which remains out of contact with the teeth 1.1 of the date disc 1.
  • the cam 3.2 has in the first embodiment the first mobile 3 with a less marked slope on its part forming the fall of the cam in order to allow the probe 4.4 of the trigger and drive rocker 4.3 to ascend this slope during a backward correction which causes the triggering and driving spring to be armed 5.
  • the part forming the fall of the cam can have a steeper slope because the declutching of the declutching means unidirectional avoids arming the trigger and drive spring 5 during a backward correction, which results at the same time in a longer load sector on the cam 3.2, therefore in a better distribution of the torque.
  • the separation of the triggering and driving force exerted by the triggering and driving spring 5 placed on a frame or a bridge of the timepiece, or even of an instantaneous control module, and of the prestressing force exerted by the prestressing spring 4.6 arranged on the trigger and drive lever 4.3 improves the comfort of use, because these forces typically do not have the same threshold and the user does not feel, in a control device according to the present invention, that a much lower return force than in mechanisms of the prior art when it wants to effect a rapid correction of the date.
  • the present invention also relates to a movement and a timepiece comprising such an instantaneous control device which are, without it being necessary to describe them in any detail, within the reach of those skilled in the art having the instruction technique according to the present description.
  • it is a wristwatch equipped with a mechanical watch movement
  • the instantaneous date device allows an instantaneous change of the date indication while guaranteeing a low torque gain on the watch movement, since the torque gain is distributed over a maximum duration of the day as well as the accumulated energy is released instantly.
  • the pivot axis placed eccentrically on the second gear of the device according to the present invention while arranging the trigger and drive lever entirely on the second toothed wheel, allows an optimized trajectory of the different parts of the device.
  • the device has effective protection of the date disc against a double jump as well as the possibility of manual correction of the hours and / or the date using the crown of the corresponding timepiece. , in particular setting the time anti-clockwise and / or quickly correcting the date, without any restriction on the time range and without risk of damage. All these properties lead to a particularly safe and reliable operation of the device. Furthermore, the instantaneous date device according to the present invention achieves, due to the separation of the triggering and driving force exerted by the triggering and driving spring placed on the frame or a bridge and the force of preload exerted by the preload spring arranged on the trigger and drive rocker, improved comfort of use.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
EP18178458.8A 2018-06-19 2018-06-19 Augenblicklich schaltende steuervorrichtung für datumsanzeige von uhren Active EP3584643B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18178458.8A EP3584643B1 (de) 2018-06-19 2018-06-19 Augenblicklich schaltende steuervorrichtung für datumsanzeige von uhren
CN201910315336.XA CN110618597B (zh) 2018-06-19 2019-04-19 用于时钟的日期显示的瞬时日期控制装置
US16/408,269 US11429066B2 (en) 2018-06-19 2019-05-09 Instantaneous control device for a date display of a timepiece
JP2019110289A JP7393135B2 (ja) 2018-06-19 2019-06-13 時計の日付表示のための瞬時制御装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18178458.8A EP3584643B1 (de) 2018-06-19 2018-06-19 Augenblicklich schaltende steuervorrichtung für datumsanzeige von uhren

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EP3584643A1 true EP3584643A1 (de) 2019-12-25
EP3584643B1 EP3584643B1 (de) 2020-11-11

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EP (1) EP3584643B1 (de)
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EP4194965A1 (de) * 2021-12-08 2023-06-14 Patek Philippe SA Genève Betätigungsmechanismus für uhr

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JP7349382B2 (ja) * 2020-02-07 2023-09-22 シチズン時計株式会社 回し車及び時計
EP4109182A1 (de) * 2021-06-23 2022-12-28 ETA SA Manufacture Horlogère Suisse Zusätzliches modul zur anzeige der zeitzonen

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CH708338A2 (fr) * 2013-07-04 2015-01-15 Manuf La Joux Perret Sa Mécanisme correcteur pas-à-pas.
DE102015011324B3 (de) 2015-08-27 2016-09-22 NOMOS Glashütte/SA Roland Schwertner KG Augenblicklich schaltender Datumsschaltmechanismus

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JP7393135B2 (ja) 2023-12-06
EP3584643B1 (de) 2020-11-11
CN110618597A (zh) 2019-12-27
US11429066B2 (en) 2022-08-30
JP2019219391A (ja) 2019-12-26
US20190384223A1 (en) 2019-12-19
CN110618597B (zh) 2022-06-03

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