EP3542223B1 - Instantaneous drive system and chronograph mechanism provided with such a system - Google Patents

Instantaneous drive system and chronograph mechanism provided with such a system Download PDF

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Publication number
EP3542223B1
EP3542223B1 EP17807783.0A EP17807783A EP3542223B1 EP 3542223 B1 EP3542223 B1 EP 3542223B1 EP 17807783 A EP17807783 A EP 17807783A EP 3542223 B1 EP3542223 B1 EP 3542223B1
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EP
European Patent Office
Prior art keywords
wheel
cam
feeler
spindle
display
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
EP17807783.0A
Other languages
German (de)
French (fr)
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EP3542223A1 (en
Inventor
Jean-Marc Wiederrecht
Laurent Wiederrecht
Maximilien Di Blasi
Guy Dubois-Ferrière
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.)
Nogerah SA
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Nogerah SA
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Publication of EP3542223A1 publication Critical patent/EP3542223A1/en
Application granted granted Critical
Publication of EP3542223B1 publication Critical patent/EP3542223B1/en
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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
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • G04B19/025—Back-gearing arrangements between gear train and hands for simultaneous indicating on several dials
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork
    • G04B13/002—Gearwork where rotation in one direction is changed into a stepping movement
    • G04B13/003—Gearwork where rotation in one direction is changed into a stepping movement with a step for each complete revolution
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0804—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0866—Special arrangements
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0866—Special arrangements
    • G04F7/0871—Special arrangements with multiple chronograph functions, i.e. to count multiple running times

Definitions

  • the present invention relates to the field of watchmaking. It relates, more particularly, to a display mechanism with reset function, preferably associated with an instantaneous drive system, as well as a chronograph mechanism equipped with such a mechanism and such a system.
  • the chronograph seconds wheel In the field of chronographs, the chronograph seconds wheel is arranged so as to be able to be driven by the second wheel of the movement through a clutch mechanism, when the latter is engaged.
  • the chronograph seconds wheel carries the chronograph seconds hand.
  • the minute counter hand As for the minute counter hand, it is driven by a finger carried by the chronograph seconds wheel, which also requires having a transmission so that the minute counter hand turns in the same direction. than the seconds hand.
  • the document DE 40770 C illustrates a mechanism in which the minute counter is driven by a pin carried by a transmission meshing with the chronograph seconds wheel.
  • the hour wheel counter can be driven directly from the barrel, without passing through the minute counter.
  • the moving parts of the minute and hour counters are also positioned by jumpers, to maintain their position when they are not under the action of their respective drive system.
  • Instantaneous jump counters are also known in which a cam is mounted integral with a chronograph seconds wheel. A rocker rests on this cam and is connected to a pawl, which allows the minute counter to be driven by one step each time the rocker falls. A jumper also ensures the positioning of the needle.
  • the counters are each associated with a spiral or heart-shaped cam, with which a hammer can cooperate when resetting the counters, in order to return the hands to a predefined position.
  • the object of the present invention is to propose a new construction of a chronograph, making it possible to avoid the complex adjustments of synchronization of the various elements for the actuation of the hammers.
  • the applicant has in particular developed a display mechanism with reset function which forms a first aspect of the present patent application.
  • This display mechanism is advantageously associated with an instant drive system of particular construction.
  • the invention also relates to a timepiece movement with a chronograph function implementing such a display mechanism, as well as a timepiece comprising such a timepiece movement.
  • the invention relates to a display mechanism, for a watch movement, comprising a mobile display of a first size comprising a shaft intended to carry a display member of the first size and carrying, integrally in rotation, a first wheel and a cam comprising at least one spiral portion, the display mechanism being arranged so as to be able to present a first state, active, in which the first wheel is intended to present a kinematic connection with a wheel set for driving the watch movement to be driven in rotation as a function of the first magnitude to be displayed, and a second state, of reset, in which the kinematic link is neutralized to allow the first wheel to return to a predefined position, associated with a predefined position of the display member, the display mechanism further comprising a sensor capable of cooperating with the periphery of the cam.
  • the display mechanism is characterized in that the feeler and the periphery of the cam are arranged and dimensioned in such a way that the feeler exerts on the cam, in the second state, a restoring force having a non-radial component suitable for return the first wheel to the predefined position.
  • the mechanism can include a drive wheel having a kinematic connection with the winding wheel and comprising a drive finger arranged, in the first state, to be able to cooperate with a second wheel, forming part of a second mobile display, of a second magnitude corresponding to a multiple of the first magnitude, and driving it by at least one step in response to the movement of the feeler from its second position to its first position.
  • the mechanism may include a release lever operable by a user to apply the additional force to the winding mobile, via the driving mobile.
  • the mechanism comprises a second cam comprising at least one integral spiral portion in rotation of the second wheel and cooperating with an additional feeler, subjected to the action of an additional spring, to cause it to pivot in the first state between a first position, associated with a zone of the second cam of minimum radius, and a second position associated with a zone of the second cam of maximum radius, and in such a way that the additional feeler exerts on the second cam, in the second state, a restoring force having a non-radial component suitable for bringing the second wheel back into a corresponding preset position.
  • the invention also relates to a mechanism for displaying timed times comprising a first drive system as mentioned above, in which a chronograph seconds mobile forms the driving wheel and a counter mobile minutes forms the driven wheel.
  • the invention also comprises a second drive system as mentioned above, in which the minute counter mobile forms the driving wheel of the second drive system and in which the driven wheel of the second drive system forms a mobile hour counter.
  • FIG 1 an instantaneous drive system for a wheel driven by a driving wheel, associated with a display mechanism according to the invention.
  • this drive system is implemented in a chronograph, for driving a minute counter wheel set 140 by a chronograph seconds wheel set 110, on the one hand ( figure 1 and 2 ), and for driving an hour counter mobile 180 by the minutes counter mobile 140 ( figure 3 and 4 ).
  • the elements identical to the training systems will bear the same numbers for the tens and units, with respectively the number 1 for the hundreds of elements involved in driving the minute counter mobile and the number 2 for the hundreds of elements involved in driving the hours counter.
  • the driving wheel is the mobile seconds chronograph 110, capable of being engaged with a second wheel in a first operating state, by a clutch not shown.
  • the mobile seconds chronograph 110 is positioned by a brake, which may be of the conventional type, and which has not been shown either.
  • the chronograph seconds mobile 110 is integral in rotation with a spiral cam 112, the different roles of which will appear later.
  • the cam 112 is in the form of a “simple” spiral, but it would also be possible to envisage having several spiral portions, distributed at 360°/N, where N is the number of spiral portions.
  • Each spiral portion defines at its respective ends a zone of minimum radius and a zone of maximum radius. In the direction of rotation of the cam, the passage from a zone of minimum radius to a zone of maximum radius is progressive, and the passage from a zone of maximum radius to the zone of minimum radius is sudden, taking place on a fraction of a degree, and defining a threshold 114.
  • a first feeler 116 is pivotally mounted along an axis of rotation and held in abutment against the periphery of the cam by a first spring 117.
  • the first spring is in the form of a spiral, without this being limiting.
  • the first feeler 116 is capable of moving between a first position when it bears against a portion of minimum radius of the cam 112 and a second position when it bears against a portion of the maximum radius of the cam 112.
  • the spiral cam 112 and the feeler 116 are dimensioned and arranged so that a pressure exerted by the feeler 116 in the direction of the cam 112, has a non-radial component, playing the role of a restoring force capable of driving the cam 112 in rotation in the opposite direction to its normal drive by the movement, until the abutment of the feeler 116 against the threshold 114 or one of the thresholds of the cam.
  • the feeler 116 On its axis of rotation, the feeler 116 carries a mobile winding 118, fixed in rotation to the feeler 116.
  • the mobile winding 118 could also be pivotally mounted on another axis, being driven in rotation by a set of teeth fixed to the feeler 116.
  • the winding mobile 118 comprises a first pinion 120, arranged integrally on a shaft 122 coaxial with the axis of rotation, on a first side of the feeler 116.
  • a second pinion 124 is also arranged integrally on the shaft 122, on the other side of the feeler 116 with reference to the first pinion 120.
  • a pin 126 can be fixed on the feeler 116, in the toothing of the second pinion 124, to make the winding mobile 118 integral in rotation of the feeler. When the pin 126 is not in place, the indexing of the mobile winding 118 can easily be adjusted with respect to the feeler 116.
  • the pin and the second pinion form means for indexing the position of the mobile winding 118 and more particularly of the first pinion 120 with reference to the feeler 116.
  • the drive system further comprises a drive mobile 130, in kinematic connection with the winding mobile 118.
  • the drive mobile 130 comprises a plate 132 provided with a toothing 134 in mesh with the first pinion 120 of the winding wheel set 118.
  • the drive wheel set 130 also comprises a drive finger 136 capable of cooperating with the driven wheel (in this case the minute counter wheel set 140) to train him.
  • the toothing of the driven wheel is provided to optimize a transfer of torque transmitted by the drive finger 130.
  • the latter is rotatably mounted on the board 132, being pressed against a stop 138 by an elastic member 139.
  • the finger drive 136 is thus capable of driving the driven wheel in the counter-clockwise direction with reference to the figures which are seen from the back of the movement, either in the clockwise direction on the dial side, the finger drive 136 then resting against the abutment 138.
  • the finger 136 is retractable, by moving against the elastic member 139, to cross the toothing of the driven wheel when the driving wheel rotates in the direction counter-clockwise, c ie during an arming phase.
  • the sudden drop of the feeler 116 sets the winding wheel set 118 in rotation and consequently the drive wheel set 130.
  • the drive finger 136 completes a stroke around the axis of rotation of the drive wheel set 130, at the during which it drives the driven wheel one step, preferably.
  • a person skilled in the art will be able to adapt the penetration of the drive finger and its stroke in order to determine the number of steps taken by the driven wheel each time the feeler 116 falls.
  • the cam is integral with the chronograph seconds mobile 110 and the minutes counter mobile 140 is driven by one step for each revolution of the cam 112, ie every minute.
  • the feeler has a notch 116a allowing the passage of the axis of rotation of the winding mobile 118 during the movements of the feeler.
  • the angular position of the minute counter mobile 140 is secured by a safety pawl 142 cooperating directly with its teeth.
  • the chronograph described in the figures comprises a second drive system, for driving an hour counter wheel set 150 by the minute counter wheel set 140 ( figure 3 and 4 ).
  • the operation of the second drive system being similar to the first, the similar elements will be described more quickly.
  • the driving wheel is the minute counter mobile 140, which is also the driven wheel of the first drive system.
  • the minute counter mobile 140 is integral in rotation with a second spiral cam 212.
  • the cam 212 is in the form of a “simple” spiral and has only one threshold.
  • a second feeler 216 is pivotally mounted along a second axis of rotation, separate from the first in the example, and held against the periphery of the second cam 212 by a second spring 217, also spiral in the example.
  • the second feeler 216 is capable of moving between a first position when it bears against a portion of minimum radius of the cam and a second position when it bears against a portion of maximum radius of the cam.
  • the second spiral cam 212 and the second feeler 216 are dimensioned and arranged so that a pressure exerted by the second feeler 216 in the direction of the second cam 212, has a non-radial component, playing the role of a force recall able to drive the cam 212 in rotation in the opposite direction to its normal drive by the movement, until the abutment of the second feeler 216 against the threshold 214 of the second cam.
  • the second feeler 216 On its axis of rotation, the second feeler 216 carries a second winding mobile (not visible, under the feeler 216), integral in rotation with the second feeler 216.
  • a return wheel 219 is arranged in permanent engagement with the winding mobile. winding while being kept under tension by the second spring 217.
  • the second drive system further comprises a second drive wheel set 230, in kinematic connection with the second winding wheel set.
  • the second mobile drive 230 is essentially hidden in the figures, but is similar to the first, visible in the figure 1 and 2 . It thus comprises a second drive finger 236, retractable, capable of cooperating with the second driven wheel to drive it.
  • the second driven wheel is thus the hour counter wheel of the 180 chronograph.
  • the sudden fall of the second feeler 216 sets the second winding wheel and consequently the second drive wheel 230 into rotation.
  • the second drive finger 236 completes a stroke around the axis of rotation of the second drive wheel set 230, during which it drives the hour counter wheel set 180 by one step, for each revolution of the cam 212 integral with the minute counter wheel set 140.
  • the various cams 112, 212 and mobiles of the chronograph 110, 140, 180 are arranged coaxially, making it possible to provide a coaxial display of timed time information, i.e. seconds, minutes and hours depending on the example.
  • the angular position of the hour counter mobile 180 is also secured by a second safety pawl 242, arranged on the same axis as the first 142.
  • the two safety pawls 142, 242 are connected together with play by a pin 246 housed in an oblong 148 of the first pawl as well as in a non-visible oblong of the second pawl 242, to enable them to work separately on their respective wheel.
  • the drive system according to the invention is particularly advantageous when it is implemented in a chronograph, as illustrated and described in the present application. Indeed, as we will explain below, the feeler of each drive system can be used, within the framework of the implementation of the display mechanism according to the present invention, also to bring a counter mobile back into a predefined position, or at its zero position here, in the example of the figure 1 and 2 , the chronograph seconds mobile 110 and in the example of the figure 3 and 4 , the 140 minute counter mobile.
  • the profile of the cams 112 and 212 is arranged so that pressing its respective feeler 116, 216 in the direction of the cam, makes it possible to drive the cam in rotation, as far as the stop. feeler against the step 114, 214 of the spiral.
  • the action of the spring 117 is efficient when this mobile 110 is disengaged and is no longer subjected to a drive torque transmitted by the movement, in a second operating state of the mechanism. Indeed, the force exerted by the spring 117 is of course less than the drive force of the movement, so that the chronograph operates correctly.
  • the disengagement may be conventional and does not need to be described in this application.
  • the chronograph mechanism comprises a declutch lever 50 capable of being moved by a reset control 52.
  • the release lever 50 comprises a first functional zone 54 arranged to cooperate with the mobile drive 130.
  • the first functional zone 54 is advantageously arranged at the end of a flexible arm 56, said end possibly comprising several levels to reach the mobile drive 130.
  • the additional force exerted by the release lever 50 on the mobile drive 130 makes it possible to provide an additional torque on the feeler 116, against the cam 112, accelerating and thus facilitating the resetting of the mobile seconds chronograph 110.
  • the spring 117 can be relatively weak, because the additional force exerted by the user on the reset control provides sufficient torque to ensure the return to zero of the mobile seconds chronograph 110.
  • the friction of the feeler 116 on cam 112 therefore slightly disturbs the movement, during the operation of the chronograph.
  • the minute counter mobile 140 must also be reset to zero.
  • the second sensor 216 subjected to the action of its spring 217, is arranged to cooperate with the second cam 212 and bring the minute counter mobile 140 to zero.
  • the release lever 50 is shaped to perform these functions. First of all, the first functional zone 54 is arranged, by cooperating with the driving wheel set 130, to release the drive finger 136 from the toothing of the minute counter wheel set 140.
  • the release lever 50 also comprises a second functional area 58, rigid, arranged to cooperate with the safety pawl 142 and put it out of the teeth of the minute counter mobile 140. This is then free to be reset by the action of the second feeler 216.
  • the action of the second sensor 216 is also reinforced by an actuation of the reset command 52.
  • the release lever 50 comprises a third functional zone 60 arranged to cooperate with the second mobile drive 230.
  • the third functional zone 60 is advantageously placed at the end of an additional flexible arm 62, said end being able to comprise several levels to reach the second mobile drive 230.
  • the additional force exerted by the release lever 50 on the second mobile drive 230 makes it possible to provide additional torque on the second feeler 216, at the against the second cam 212, thus accelerating and facilitating the resetting of the minute counter mobile 140.
  • the spring 217 can be relatively weak, because the additional force exerted by the user on the reset control provides sufficient torque to ensure the return to zero of the minute counter mobile 140.
  • the friction of the feeler 216 on cam 212 therefore slightly disturbs the movement, during the operation of the chronograph.
  • the hours counter mobile 150 must also be reset to zero.
  • the hour counter mobile 150 is not attached to a cam which could ensure its return to zero.
  • the hour counter wheel set 180 is associated with a return spring 182, here taking the form of a spiral spring, arranged to return the wheel set to its initial position, which may be defined by a stop. It will be noted that the hour counter mobile 180 is arranged to perform a maximum rotation of 360°. It in fact comprises a truncated tooth 184, preventing the second drive finger 236 from advancing it when the truncated tooth 184 arrives opposite the second drive mobile 230.
  • the second functional zone 58 of the release lever 50 makes it possible to act simultaneously and in synchronism on the two safety pawls 142 and 242, which are linked to each other by the pin 246 and the two oblongs.
  • the return spring 182 brings it back to its initial position of zero.
  • the present application proposes an original and particularly suitable jumping drive system for a chronograph mechanism, in which the feeler makes it possible both to connect the driving wheel to the driven wheel for driving the latter, but also participates when resetting the counter, by cooperating with its cam. This avoids having to resort to traditional hammers and heart cams.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Description

Domaine techniqueTechnical area

La présente invention se rapporte au domaine de l'horlogerie. Elle concerne, plus particulièrement, un mécanisme d'affichage avec fonction de remise à zéro, préférablement associé à un système d'entraînement instantané, ainsi qu'un mécanisme de chronographe équipé d'un tel mécanisme et d'un tel système.The present invention relates to the field of watchmaking. It relates, more particularly, to a display mechanism with reset function, preferably associated with an instantaneous drive system, as well as a chronograph mechanism equipped with such a mechanism and such a system.

Etat de la techniqueState of the art

Dans le domaine des chronographes, la roue de secondes chronographe est agencée de manière à pouvoir être entraînée par la roue de seconde du mouvement au travers d'un mécanisme d'embrayage, lorsque celui-ci est embrayé. La roue de secondes chronographe porte l'aiguille de seconde du chronographe. Pour ce qui concerne l'aiguille du compteur des minutes, elle est entraînée par un doigt porté par la roue de secondes chronographe, ce qui nécessite d'avoir en outre un renvoi afin que l'aiguille du compteur des minutes tourne dans le même sens que l'aiguille des secondes. Il en est de même pour la relation entre le mobile de compteur des minutes et le mobile du compteur des heures. Le document DE 40770 C illustre un mécanisme dans lequel le compteur des minutes est entraîné par une goupille portée par un renvoi engrenant avec la roue de secondes chronographe. Dans certains mécanismes, le compteur du mobile des heures peut être entraîné directement depuis le barillet, sans passer par le compteur des minutes. Les mobiles des compteurs des minutes et des heures sont en outre positionnés par des sautoirs, pour conserver leur position lorsqu'ils ne sont pas sous l'action de leur système d'entraînement respectif.In the field of chronographs, the chronograph seconds wheel is arranged so as to be able to be driven by the second wheel of the movement through a clutch mechanism, when the latter is engaged. The chronograph seconds wheel carries the chronograph seconds hand. As for the minute counter hand, it is driven by a finger carried by the chronograph seconds wheel, which also requires having a transmission so that the minute counter hand turns in the same direction. than the seconds hand. The same applies to the relationship between the minute counter wheel and the hour counter wheel. The document DE 40770 C illustrates a mechanism in which the minute counter is driven by a pin carried by a transmission meshing with the chronograph seconds wheel. In some mechanisms, the hour wheel counter can be driven directly from the barrel, without passing through the minute counter. The moving parts of the minute and hour counters are also positioned by jumpers, to maintain their position when they are not under the action of their respective drive system.

On connaît également des compteurs à saut instantané dans lesquels une came est montée solidaire d'une roue de secondes chronographe. Une bascule est maintenue en appui sur cette came et est reliée à un cliquet, qui permet d'entraîner d'un pas le compteur des minutes à chaque chute de la bascule. Un sautoir assure également le positionnement de l'aiguille.Instantaneous jump counters are also known in which a cam is mounted integral with a chronograph seconds wheel. A rocker rests on this cam and is connected to a pawl, which allows the minute counter to be driven by one step each time the rocker falls. A jumper also ensures the positioning of the needle.

La demande de brevet EP 2241944 A2 illustre un exemple d'une telle construction.The patent application EP 2241944 A2 illustrates an example of such a construction.

Parallèlement, les compteurs sont chacun associés à une came en colimaçon ou en cœur, avec laquelle un marteau peut coopérer lors de la remise à zéro des compteurs, afin de ramener les aiguilles dans une position prédéfinie.At the same time, the counters are each associated with a spiral or heart-shaped cam, with which a hammer can cooperate when resetting the counters, in order to return the hands to a predefined position.

Pour la remise à zéro des aiguilles, il est nécessaire de coordonner une action des marteaux et un débrayage des différents mobiles de compteurs, ou un débrayage du cliquet d'entraînement du compteur lorsqu'il y en a un. Le réglage de la bonne coordination de ces opérations et l'ajustement de la position des cœurs avec les sautoirs de positionnement des différents mobiles, rendent cette opération délicate si l'on veut obtenir un résultat de qualité.To reset the hands, it is necessary to coordinate an action of the hammers and a disengagement of the various counter mobiles, or a disengagement of the counter drive pawl when there is one. The adjustment of the good coordination of these operations and the adjustment of the position of the cores with the positioning jumpers of the various mobiles, make this operation delicate if one wants to obtain a quality result.

La présente invention a pour but de proposer une nouvelle construction de chronographe, permettant d'éviter les réglages complexes de synchronisation des différents éléments pour l'actionnement des marteaux.The object of the present invention is to propose a new construction of a chronograph, making it possible to avoid the complex adjustments of synchronization of the various elements for the actuation of the hammers.

Divulguation de l'inventionDisclosure of Invention

Pour atteindre ce but, la demanderesse a notamment développé un mécanisme d'affichage avec fonction de remise à zéro qui forme un premier aspect de la présente demande de brevet. Ce mécanisme d'affichage est avantageusement associé à un système d'entraînement instantané de construction particulière.To achieve this object, the applicant has in particular developed a display mechanism with reset function which forms a first aspect of the present patent application. This display mechanism is advantageously associated with an instant drive system of particular construction.

L'invention concerne également un mouvement horloger à fonction chronographe mettant en oeuvre un tel mécanisme d'affichage, ainsi qu'une pièce d'horlogerie comportant un tel mouvement horloger.The invention also relates to a timepiece movement with a chronograph function implementing such a display mechanism, as well as a timepiece comprising such a timepiece movement.

Ainsi, l'invention concerne un mécanisme d'affichage, pour mouvement horloger, comportant un mobile d'affichage d'une première grandeur comprenant un arbre destiné à porter un organe d'affichage de la première grandeur et portant, solidairement en rotation, une première roue et une came comprenant au moins une portion en colimaçon, le mécanisme d'affichage étant agencé de manière à pouvoir présenter un premier état, actif, dans lequel la première roue est destinée à présenter une liaison cinématique avec un mobile d'entraînement du mouvement horloger pour être entraînée en rotation en fonction de la première grandeur à afficher, et un deuxième état, de remise à zéro, dans lequel la liaison cinématique est neutralisée pour permettre un retour de la première roue dans une position prédéfinie, associée à une position prédéfinie de l'organe d'affichage, le mécanisme d'affichage comportant en outre un palpeur susceptible de coopérer avec le pourtour de la came. Le mécanisme d'affichage est caractérisé par le fait que le palpeur et le pourtour de la came sont agencés et dimensionnés de telle manière que le palpeur exerce sur la came, dans le deuxième état, une force de rappel présentant une composante non radiale adaptée pour ramener la première roue dans la position prédéfinie.Thus, the invention relates to a display mechanism, for a watch movement, comprising a mobile display of a first size comprising a shaft intended to carry a display member of the first size and carrying, integrally in rotation, a first wheel and a cam comprising at least one spiral portion, the display mechanism being arranged so as to be able to present a first state, active, in which the first wheel is intended to present a kinematic connection with a wheel set for driving the watch movement to be driven in rotation as a function of the first magnitude to be displayed, and a second state, of reset, in which the kinematic link is neutralized to allow the first wheel to return to a predefined position, associated with a predefined position of the display member, the display mechanism further comprising a sensor capable of cooperating with the periphery of the cam. The display mechanism is characterized in that the feeler and the periphery of the cam are arranged and dimensioned in such a way that the feeler exerts on the cam, in the second state, a restoring force having a non-radial component suitable for return the first wheel to the predefined position.

Selon un mode de réalisation préféré, le palpeur étant destiné à être monté rotatif sur un élément de bâti du mouvement horloger, on peut prévoir que le mécanisme d'affichage comporte un ressort agencé pour agir sur le palpeur et

  • tendre à le maintenir en appui contre le pourtour de la came, de telle manière que le palpeur soit susceptible de se déplacer entre une première position, associée à une zone de la came de rayon minimal, et une deuxième position associée à une zone de la came de rayon maximal, et
  • contribuer au moins partiellement à l'application de la force de rappel sur la came par le palpeur dans le deuxième état.
According to a preferred embodiment, the feeler being intended to be rotatably mounted on a frame element of the timepiece movement, provision may be made for the display mechanism to include a spring arranged to act on the feeler and
  • tend to keep it bearing against the periphery of the cam, in such a way that the feeler is capable of moving between a first position, associated with a zone of the cam of minimum radius, and a second position associated with a zone of the maximum radius cam, and
  • contribute at least partially to the application of the restoring force on the cam by the feeler in the second state.

On peut en outre prévoir que le mécanisme comporte un mobile d'armage solidaire en rotation du palpeur et susceptible de subir une force complémentaire, dans le deuxième état, présentant des propriétés telles qu'elle contribue à l'application de la force de rappel sur la came par le palpeur.Provision can also be made for the mechanism to comprise a winding wheel set that is integral in rotation with the feeler and capable of undergoing an additional force, in the second state, having properties such that it contributes to the application of the restoring force on the cam by the feeler.

De plus, on peut préférablement prévoir que le mécanisme comporte un mobile d'entraînement présentant une liaison cinématique avec le mobile d'armage et comprenant un doigt d'entraînement agencé, dans le premier état, pour pouvoir coopérer avec une deuxième roue, faisant partie d'un deuxième mobile d'affichage, d'une deuxième grandeur correspondant à un multiple de la première grandeur, et l'entraîner d'au moins un pas en réponse au passage du palpeur de sa deuxième position à sa première position.In addition, provision can preferably be made for the mechanism to include a drive wheel having a kinematic connection with the winding wheel and comprising a drive finger arranged, in the first state, to be able to cooperate with a second wheel, forming part of a second mobile display, of a second magnitude corresponding to a multiple of the first magnitude, and driving it by at least one step in response to the movement of the feeler from its second position to its first position.

Par ailleurs, le mécanisme peut comporter un levier de débrayage actionnable par un utilisateur pour appliquer la force complémentaire sur le mobile d'armage, par l'intermédiaire du mobile d'entraînement.Furthermore, the mechanism may include a release lever operable by a user to apply the additional force to the winding mobile, via the driving mobile.

Selon un mode de réalisation préféré de l'invention, le mécanisme comporte une deuxième came comprenant au moins une portion en colimaçon solidaire en rotation de la deuxième roue et coopérant avec un palpeur supplémentaire, soumis à l'action d'un ressort supplémentaire, pour le faire pivoter dans le premier état entre une première position, associée à une zone de la deuxième came de rayon minimal, et une deuxième position associée à une zone de la deuxième came de rayon maximal, et de telle manière que le palpeur supplémentaire exerce sur la deuxième came, dans le deuxième état, une force de rappel présentant une composante non radiale adaptée pour ramener la deuxième roue dans une position prédéfinie correspondante.According to a preferred embodiment of the invention, the mechanism comprises a second cam comprising at least one integral spiral portion in rotation of the second wheel and cooperating with an additional feeler, subjected to the action of an additional spring, to cause it to pivot in the first state between a first position, associated with a zone of the second cam of minimum radius, and a second position associated with a zone of the second cam of maximum radius, and in such a way that the additional feeler exerts on the second cam, in the second state, a restoring force having a non-radial component suitable for bringing the second wheel back into a corresponding preset position.

En outre, dans ce cas, on peut également prévoir que le palpeur supplémentaire soit solidaire d'un mobile d'armage supplémentaire présentant une liaison cinématique avec un mobile d'entraînement supplémentaire comprenant un doigt d'entraînement agencé, dans le premier état, pour pouvoir coopérer avec une troisième roue, faisant partie d'un troisième mobile d'affichage, d'une troisième grandeur correspondant à un multiple de la deuxième grandeur, et l'entraîner d'au moins un pas en réponse au passage du palpeur supplémentaire de sa deuxième position à sa première position.In addition, in this case, provision can also be made for the additional feeler to be secured to an additional winding wheel set having a kinematic connection with an additional drive wheel set comprising a drive finger arranged, in the first state, to to be able to cooperate with a third wheel, forming part of a third mobile display, of a third magnitude corresponding to a multiple of the second magnitude, and to drive it by at least one step in response to the passage of the additional feeler of its second position to its first position.

De manière avantageuse, ce mécanisme d'affichage peut être associé à un système d'entraînement instantané qui peut être présenté comme comprenant une roue menante, soit la première roue, destinée à fournir de l'énergie à une roue menée, dans lequel la roue menante est solidaire d'une came comprenant au moins une portion en colimaçon. Le système d'entraînement comprend encore :

  • un palpeur monté pivotant selon un axe de rotation et maintenu en appui contre le pourtour de la came par un premier ressort, ledit palpeur étant apte à évoluer entre une première position lorsqu'il est en appui sur une zone de rayon minimal de la came et une deuxième position lorsqu'il est en appui sur une zone de rayon maximal de la came,
  • un mobile d'armage entraîné en rotation par le palpeur,
  • un mobile d'entraînement, en liaison cinématique avec le mobile d'armage et comprenant un doigt d'entraînement apte à coopérer avec la roue menée pour l'entraîner d'un pas au moins lors du passage du palpeur de sa deuxième position à sa première position.
Advantageously, this display mechanism can be associated with an instantaneous drive system which can be presented as comprising a drive wheel, i.e. the first wheel, intended to supply energy to a driven wheel, in which the wheel drive is secured to a cam comprising at least one spiral portion. The training system also includes:
  • a feeler mounted to pivot along an axis of rotation and held in abutment against the periphery of the cam by a first spring, said feeler being able to move between a first position when it is in abutment on a zone of minimum radius of the cam and a second position when it is resting on a zone of maximum radius of the cam,
  • a winding mobile driven in rotation by the feeler,
  • a driving wheel set, in kinematic connection with the winding wheel set and comprising a drive pin capable of cooperating with the driven wheel to drive it by at least one step during the passage of the feeler from its second position to its first position.

Dans un mode de réalisation préféré, l'invention concerne également un mécanisme d'affichage de temps chronométrés comprenant un premier système d'entraînement tel que mentionné ci-dessus, dans lequel un mobile de secondes chronographe forme la roue menante et un mobile de compteur des minutes forme la roue menée.In a preferred embodiment, the invention also relates to a mechanism for displaying timed times comprising a first drive system as mentioned above, in which a chronograph seconds mobile forms the driving wheel and a counter mobile minutes forms the driven wheel.

Dans un mode de réalisation préféré, l'invention comprend également un deuxième système d'entraînement tel que mentionné ci-dessus, dans lequel le mobile de compteur des minutes forme la roue menante du deuxième système d'entraînement et dans lequel la roue menée du deuxième système d'entraînement forme un mobile de compteur des heures.In a preferred embodiment, the invention also comprises a second drive system as mentioned above, in which the minute counter mobile forms the driving wheel of the second drive system and in which the driven wheel of the second drive system forms a mobile hour counter.

Brève description des dessinsBrief description of the drawings

D'autres détails de l'invention apparaîtront plus clairement à la lecture de la description qui suit, faite en référence au dessin annexé dans lequel :

  • les figures 1 et 2 montrent une première position et une deuxième position d'un mécanisme d'affichage selon l'invention, mis en oeuvre pour l'entraînement d'un mobile de compteur des minutes par un mobile de secondes chronographe pour permettre l'affichage de temps mesurés, et
  • les figures 3 et 4 montrent une première position et une deuxième position d'un mécanisme d'affichage selon l'invention, mis en oeuvre pour l'entraînement d'un mobile de compteur des heures par un mobile de compteur des minutes d'un mécanisme de chronographe.
Other details of the invention will appear more clearly on reading the following description, made with reference to the appended drawing in which:
  • the figure 1 and 2 show a first position and a second position of a display mechanism according to the invention, implemented for driving a minute counter wheel set by a chronograph seconds wheel set to allow the display of measured times, and
  • the figure 3 and 4 show a first position and a second position of a display mechanism according to the invention, implemented for driving an hour counter wheel set by a minute counter wheel set of a chronograph mechanism.

Mode de réalisation de l'inventionEmbodiment of the invention

On a représenté sur la figure 1, un système d'entraînement instantané d'une roue menée par une roue menante, associé à un mécanisme d'affichage selon l'invention. Dans les exemples décrits ci-après, ce système d'entraînement est mis en œuvre dans un chronographe, pour l'entraînement d'un mobile de compteur des minutes 140 par un mobile de secondes chronographe 110, d'une part (figures 1 et 2), et pour l'entraînement d'un mobile de compteur des heures 180 par le mobile de compteur des minutes 140 (figures 3 et 4).We represented on the figure 1 , an instantaneous drive system for a wheel driven by a driving wheel, associated with a display mechanism according to the invention. In the examples described below, this drive system is implemented in a chronograph, for driving a minute counter wheel set 140 by a chronograph seconds wheel set 110, on the one hand ( figure 1 and 2 ), and for driving an hour counter mobile 180 by the minutes counter mobile 140 ( figure 3 and 4 ).

Dans la présente description, les éléments identiques aux systèmes d'entraînement porteront les mêmes numéros pour les dizaines et unités, avec respectivement le chiffre 1 pour les centaines des éléments intervenant dans l'entraînement du mobile du compteur des minutes et le chiffre 2 pour les centaines des éléments intervenant dans l'entraînement du compteur des heures.In the present description, the elements identical to the training systems will bear the same numbers for the tens and units, with respectively the number 1 for the hundreds of elements involved in driving the minute counter mobile and the number 2 for the hundreds of elements involved in driving the hours counter.

Ainsi, à la figure 1, la roue menante est le mobile de secondes chronographe 110, susceptible d'être embrayée avec une roue de seconde dans un premier état de fonctionnement, par un embrayage non représenté. Lors des phases d'arrêt du chronographe, le mobile de secondes chronographe 110 est positionné par un frein, qui peut être de type conventionnel, et qui n'a pas été représenté non plus.Thus, at the figure 1 , the driving wheel is the mobile seconds chronograph 110, capable of being engaged with a second wheel in a first operating state, by a clutch not shown. During stoppage phases of the chronograph, the mobile seconds chronograph 110 is positioned by a brake, which may be of the conventional type, and which has not been shown either.

Le mobile de secondes chronographe 110 est solidaire en rotation avec une came en colimaçon 112, dont les différents rôles apparaîtront plus loin. Dans l'exemple proposé, la came 112 est en forme de colimaçon « simple », mais on pourrait également envisager d'avoir plusieurs portions en colimaçon, réparties à 360°/N, où N est le nombre de portions en colimaçon. Chaque portion en colimaçon définit à ses extrémités respectives une zone de rayon minimal et une zone de rayon maximal. Dans le sens de rotation de la came, le passage d'une zone de rayon minimal à une zone de rayon maximal est progressif, et le passage d'une zone de rayon maximal à la zone de rayon minimal est soudain, s'opérant sur une fraction de degré, et définissant un seuil 114.The chronograph seconds mobile 110 is integral in rotation with a spiral cam 112, the different roles of which will appear later. In the proposed example, the cam 112 is in the form of a “simple” spiral, but it would also be possible to envisage having several spiral portions, distributed at 360°/N, where N is the number of spiral portions. Each spiral portion defines at its respective ends a zone of minimum radius and a zone of maximum radius. In the direction of rotation of the cam, the passage from a zone of minimum radius to a zone of maximum radius is progressive, and the passage from a zone of maximum radius to the zone of minimum radius is sudden, taking place on a fraction of a degree, and defining a threshold 114.

Un premier palpeur 116 est monté pivotant selon un axe de rotation et maintenu en appui contre le pourtour de la came par un premier ressort 117. Dans l'exemple, le premier ressort est en forme de spiral, sans que cela soit limitatif. Le premier palpeur 116 est apte à évoluer entre une première position lorsqu'il est en appui sur une portion de rayon minimal de la came 112 et une deuxième position lorsqu'il est en appui sur une portion de rayon maximal de la came 112.A first feeler 116 is pivotally mounted along an axis of rotation and held in abutment against the periphery of the cam by a first spring 117. In the example, the first spring is in the form of a spiral, without this being limiting. The first feeler 116 is capable of moving between a first position when it bears against a portion of minimum radius of the cam 112 and a second position when it bears against a portion of the maximum radius of the cam 112.

Selon un aspect particulièrement intéressant, la came en colimaçon 112 et le palpeur 116 sont dimensionnés et agencés de manière à ce qu'une pression exercée par le palpeur 116 en direction de la came 112, présente une composante non radiale, jouant le rôle d'une force de rappel apte à entraîner la came 112 en rotation dans le sens inverse de son entraînement normal par le mouvement, jusqu'à la butée du palpeur 116 contre le seuil 114 ou l'un des seuils de la came.According to a particularly interesting aspect, the spiral cam 112 and the feeler 116 are dimensioned and arranged so that a pressure exerted by the feeler 116 in the direction of the cam 112, has a non-radial component, playing the role of a restoring force capable of driving the cam 112 in rotation in the opposite direction to its normal drive by the movement, until the abutment of the feeler 116 against the threshold 114 or one of the thresholds of the cam.

Sur son axe de rotation, le palpeur 116 porte un mobile d'armage 118, solidaire en rotation du palpeur 116. Le mobile d'armage 118 pourrait également être monté pivotant sur un autre axe, en étant entraîné en rotation par une denture solidaire du palpeur 116.On its axis of rotation, the feeler 116 carries a mobile winding 118, fixed in rotation to the feeler 116. The mobile winding 118 could also be pivotally mounted on another axis, being driven in rotation by a set of teeth fixed to the feeler 116.

Dans l'exemple décrit, le mobile d'armage 118 comprend un premier pignon 120, disposé solidairement sur un arbre 122 coaxial à l'axe de rotation, d'un premier côté du palpeur 116. Un deuxième pignon 124 est également disposé solidairement sur l'arbre 122, de l'autre côté du palpeur 116 en référence au premier pignon 120. Une goupille 126 peut être fixée sur le palpeur 116, dans la denture du deuxième pignon 124, pour rendre le mobile d'armage 118 solidaire en rotation du palpeur. Lorsque la goupille 126 n'est pas en place, on peut régler aisément l'indexation du mobile d'armage 118 par rapport au palpeur 116. La goupille et le deuxième pignon forment des moyens d'indexage de la position du mobile d'armage 118 et plus particulièrement du premier pignon 120 en référence au palpeur 116.In the example described, the winding mobile 118 comprises a first pinion 120, arranged integrally on a shaft 122 coaxial with the axis of rotation, on a first side of the feeler 116. A second pinion 124 is also arranged integrally on the shaft 122, on the other side of the feeler 116 with reference to the first pinion 120. A pin 126 can be fixed on the feeler 116, in the toothing of the second pinion 124, to make the winding mobile 118 integral in rotation of the feeler. When the pin 126 is not in place, the indexing of the mobile winding 118 can easily be adjusted with respect to the feeler 116. The pin and the second pinion form means for indexing the position of the mobile winding 118 and more particularly of the first pinion 120 with reference to the feeler 116.

Le système d'entraînement selon l'invention comprend encore un mobile d'entraînement 130, en liaison cinématique avec le mobile d'armage 118. Conformément à l'exemple, le mobile d'entraînement 130 comprend une planche 132 munie d'une denture 134 en prise avec le premier pignon 120 du mobile d'armage 118. Le mobile d'entraînement 130 comprend également un doigt d'entraînement 136 apte à coopérer avec la roue menée (en l'espèce le mobile de compteur des minutes 140) pour l'entraîner. La denture de la roue menée est prévue pour optimiser un transfert de couple transmis par le doigt d'entraînement 130. Ce dernier est monté mobile en rotation sur la planche 132, en étant pressé contre une butée 138 par un organe élastique 139. Le doigt d'entraînement 136 est ainsi apte à entraîner la roue menée dans le sens inverse des aiguilles d'une montre en référence aux figures qui sont vues depuis le fond du mouvement, soit dans le sens des aiguilles d'une montre côté cadran, le doigt d'entraînement 136 étant alors en appui contre la butée 138. En revanche, le doigt 136 est escamotable, en se déplaçant à l'encontre de l'organe élastique 139, pour franchir la denture de la roue menée lorsque la roue menante tourne dans le sens inverse des aiguilles d'une montre, c'est-à-dire au cours d'une phase d'armage.The drive system according to the invention further comprises a drive mobile 130, in kinematic connection with the winding mobile 118. In accordance with the example, the drive mobile 130 comprises a plate 132 provided with a toothing 134 in mesh with the first pinion 120 of the winding wheel set 118. The drive wheel set 130 also comprises a drive finger 136 capable of cooperating with the driven wheel (in this case the minute counter wheel set 140) to train him. The toothing of the driven wheel is provided to optimize a transfer of torque transmitted by the drive finger 130. The latter is rotatably mounted on the board 132, being pressed against a stop 138 by an elastic member 139. The finger drive 136 is thus capable of driving the driven wheel in the counter-clockwise direction with reference to the figures which are seen from the back of the movement, either in the clockwise direction on the dial side, the finger drive 136 then resting against the abutment 138. On the other hand, the finger 136 is retractable, by moving against the elastic member 139, to cross the toothing of the driven wheel when the driving wheel rotates in the direction counter-clockwise, c ie during an arming phase.

Ainsi, on comprend que lors du passage de sa deuxième position, illustrée sur la figure 1, à sa première position, illustrée sur la figure 2, la chute soudaine du palpeur 116 met en rotation le mobile d'armage 118 et par conséquent le mobile d'entraînement 130. Le doigt d'entraînement 136 accomplit une course autour de l'axe de rotation du mobile d'entraînement 130, au cours de laquelle il entraîne la roue menée d'un pas, de préférence. L'homme du métier pourra adapter la pénétration du doigt d'entraînement et sa course afin de déterminer le nombre de pas effectué par la roue menée à chaque chute du palpeur 116.Thus, we understand that when passing from its second position, illustrated in the figure 1 , in its first position, illustrated on the figure 2 , the sudden drop of the feeler 116 sets the winding wheel set 118 in rotation and consequently the drive wheel set 130. The drive finger 136 completes a stroke around the axis of rotation of the drive wheel set 130, at the during which it drives the driven wheel one step, preferably. A person skilled in the art will be able to adapt the penetration of the drive finger and its stroke in order to determine the number of steps taken by the driven wheel each time the feeler 116 falls.

Dans le mode de réalisation illustré en exemple, la came est solidaire du mobile de secondes chronographe 110 et le mobile de compteur des minutes 140 est entraîné d'un pas à chaque tour de la came 112, soit à chaque minute.In the embodiment illustrated as an example, the cam is integral with the chronograph seconds mobile 110 and the minutes counter mobile 140 is driven by one step for each revolution of the cam 112, ie every minute.

Au surplus, on peut encore relever sur les figures que le palpeur présente une échancrure 116a permettant le passage de l'axe de rotation du mobile d'armage 118 lors des déplacements du palpeur.Moreover, it can also be noted in the figures that the feeler has a notch 116a allowing the passage of the axis of rotation of the winding mobile 118 during the movements of the feeler.

La position angulaire du mobile de compteur des minutes 140 est sécurisée par un cliquet de sécurité 142 coopérant directement avec sa denture.The angular position of the minute counter mobile 140 is secured by a safety pawl 142 cooperating directly with its teeth.

De manière avantageuse, le chronographe décrit dans les figures comporte un deuxième système d'entraînement, pour l'entraînement d'un mobile de compteur des heures 150 par le mobile de compteur des minutes 140 (figures 3 et 4). Le fonctionnement du deuxième système d'entraînement étant semblable au premier, les éléments similaires seront décrits plus rapidement.Advantageously, the chronograph described in the figures comprises a second drive system, for driving an hour counter wheel set 150 by the minute counter wheel set 140 ( figure 3 and 4 ). The operation of the second drive system being similar to the first, the similar elements will be described more quickly.

Ainsi, pour ce qui concerne le deuxième système d'entraînement, la roue menante est le mobile de compteur des minutes 140, qui est également la roue menée du premier système d'entraînement.Thus, with regard to the second drive system, the driving wheel is the minute counter mobile 140, which is also the driven wheel of the first drive system.

Le mobile de compteur des minutes 140 est solidaire en rotation avec une deuxième came en colimaçon 212. Dans l'exemple proposé, la came 212 est en forme de colimaçon « simple » et ne comporte qu'un seuil.The minute counter mobile 140 is integral in rotation with a second spiral cam 212. In the example given, the cam 212 is in the form of a “simple” spiral and has only one threshold.

Un deuxième palpeur 216 est monté pivotant selon un deuxième axe de rotation, distinct du premier dans l'exemple, et maintenu en appui contre le pourtour de la deuxième came 212 par un deuxième ressort 217, également en spiral dans l'exemple. Le deuxième palpeur 216 est apte à évoluer entre une première position lorsqu'il est en appui sur une portion de rayon minimal de la came et une deuxième position lorsqu'il est en appui sur une portion de rayon maximal de la came.A second feeler 216 is pivotally mounted along a second axis of rotation, separate from the first in the example, and held against the periphery of the second cam 212 by a second spring 217, also spiral in the example. The second feeler 216 is capable of moving between a first position when it bears against a portion of minimum radius of the cam and a second position when it bears against a portion of maximum radius of the cam.

La deuxième came en colimaçon 212 et le deuxième palpeur 216 sont dimensionnés et agencés de manière à ce qu'une pression exercée par le deuxième palpeur 216 en direction de la deuxième came 212, présente une composante non radiale, jouant le rôle d'une force de rappel apte à entraîner la came 212 en rotation dans le sens inverse de son entraînement normal par le mouvement, jusqu'à la butée du deuxième palpeur 216 contre le seuil 214 de la deuxième came.The second spiral cam 212 and the second feeler 216 are dimensioned and arranged so that a pressure exerted by the second feeler 216 in the direction of the second cam 212, has a non-radial component, playing the role of a force recall able to drive the cam 212 in rotation in the opposite direction to its normal drive by the movement, until the abutment of the second feeler 216 against the threshold 214 of the second cam.

Sur son axe de rotation, le deuxième palpeur 216 porte un deuxième mobile d'armage (non visible, sous le palpeur 216), solidaire en rotation du deuxième palpeur 216. Une roue de rappel 219 est agencée en prise permanente avec le mobile d'armage en étant maintenue sous tension par le deuxième ressort 217.On its axis of rotation, the second feeler 216 carries a second winding mobile (not visible, under the feeler 216), integral in rotation with the second feeler 216. A return wheel 219 is arranged in permanent engagement with the winding mobile. winding while being kept under tension by the second spring 217.

Le deuxième système d'entraînement selon l'invention comprend encore un deuxième mobile d'entraînement 230, en liaison cinématique avec le deuxième mobile d'armage. Le deuxième mobile d'entraînement 230 est essentiellement masqué sur les figures, mais est similaire au premier, visible sur les figures 1 et 2. Il comporte ainsi un deuxième doigt d'entraînement 236, escamotable, apte à coopérer avec la deuxième roue menée pour l'entraîner. La deuxième roue menée est ainsi la roue de compteur des heures du chronographe 180.The second drive system according to the invention further comprises a second drive wheel set 230, in kinematic connection with the second winding wheel set. The second mobile drive 230 is essentially hidden in the figures, but is similar to the first, visible in the figure 1 and 2 . It thus comprises a second drive finger 236, retractable, capable of cooperating with the second driven wheel to drive it. The second driven wheel is thus the hour counter wheel of the 180 chronograph.

Ainsi, on comprend que lors du passage de sa deuxième position, illustrée sur la figure 3, à sa première position, illustrée sur la figure 4, la chute soudaine du deuxième palpeur 216 met en rotation le deuxième mobile d'armage et par conséquent le deuxième mobile d'entraînement 230. Le deuxième doigt d'entraînement 236 accomplit une course autour de l'axe de rotation du deuxième mobile d'entraînement 230, au cours de laquelle il entraîne le mobile du compteur des heures 180 d'un pas, à chaque tour de la came 212 solidaire du mobile de compteur des minutes 140.Thus, we understand that when passing from its second position, illustrated in the picture 3 , in its first position, illustrated on the figure 4 , the sudden fall of the second feeler 216 sets the second winding wheel and consequently the second drive wheel 230 into rotation. The second drive finger 236 completes a stroke around the axis of rotation of the second drive wheel set 230, during which it drives the hour counter wheel set 180 by one step, for each revolution of the cam 212 integral with the minute counter wheel set 140.

De manière très intéressante, les différentes cames 112, 212 et mobiles du chronographe 110, 140, 180 sont disposés de manière coaxiale, permettant de fournir un affichage coaxial des informations du temps chronométré, soit les secondes, les minutes et les heures selon l'exemple.Very interestingly, the various cams 112, 212 and mobiles of the chronograph 110, 140, 180 are arranged coaxially, making it possible to provide a coaxial display of timed time information, i.e. seconds, minutes and hours depending on the example.

La position angulaire du mobile de compteur des heures 180 est également sécurisée par un deuxième cliquet de sécurité 242, disposé sur le même axe que le premier 142. Les deux cliquets de sécurité 142, 242 sont reliés entre eux avec jeu par une goupille 246 logée dans un oblong 148 du premier cliquet ainsi que dans un oblong non visible du deuxième cliquet 242, pour leur permettre de travailler séparément sur leur roue respective.The angular position of the hour counter mobile 180 is also secured by a second safety pawl 242, arranged on the same axis as the first 142. The two safety pawls 142, 242 are connected together with play by a pin 246 housed in an oblong 148 of the first pawl as well as in a non-visible oblong of the second pawl 242, to enable them to work separately on their respective wheel.

Le système d'entraînement selon l'invention est particulièrement avantageux lorsqu'il est mis en œuvre dans un chronographe, comme illustré et décrit dans la présente demande. En effet, comme nous l'expliquerons ci-après, le palpeur de chaque système d'entraînement peut être utilisé, dans le cadre de la mise en œuvre du mécanisme d'affichage selon la présente invention, également pour ramener un mobile de compteur dans une position prédéfinie, soit à sa position zéro ici, dans l'exemple des figures 1 et 2, le mobile de secondes chronographe 110 et dans l'exemple des figures 3 et 4, le mobile de compteur des minutes 140.The drive system according to the invention is particularly advantageous when it is implemented in a chronograph, as illustrated and described in the present application. Indeed, as we will explain below, the feeler of each drive system can be used, within the framework of the implementation of the display mechanism according to the present invention, also to bring a counter mobile back into a predefined position, or at its zero position here, in the example of the figure 1 and 2 , the chronograph seconds mobile 110 and in the example of the figure 3 and 4 , the 140 minute counter mobile.

Il a été mentionné précédemment que le profil des cames 112 et 212 est agencé de manière à ce qu'un appui de son palpeur respectif 116, 216 en direction de la came, permet d'entraîner la came en rotation, jusqu'à la butée du palpeur contre la marche 114, 214 du colimaçon.It was mentioned previously that the profile of the cams 112 and 212 is arranged so that pressing its respective feeler 116, 216 in the direction of the cam, makes it possible to drive the cam in rotation, as far as the stop. feeler against the step 114, 214 of the spiral.

Un examen comparé de la forme des cames de la présente invention, d'une part, et de la came illustrée dans la demande de brevet EP 2241944 A2 citée plus haut, d'autre part, fait apparaître une pente du pourtour de la came selon l'invention plus forte que la pente usuelle.A comparative examination of the shape of the cams of the present invention, on the one hand, and the cam illustrated in the patent application EP 2241944 A2 cited above, on the other hand, shows a slope of the periphery of the cam according to the invention greater than the usual slope.

Pour ce qui concerne la remise à zéro du mobile de secondes chronographe 110, l'action du ressort 117 est efficiente lorsque ce mobile 110 est débrayé et n'est plus soumis à un couple d'entraînement transmis par le mouvement, dans un deuxième état de fonctionnement du mécanisme. En effet, la force exercée par le ressort 117 est bien entendu inférieure à la force d'entraînement du mouvement, pour que le chronographe fonctionne correctement. Le débrayage peut être conventionnel et n'a pas besoin d'être décrit dans la présente demande.As regards the resetting of the chronograph seconds mobile 110, the action of the spring 117 is efficient when this mobile 110 is disengaged and is no longer subjected to a drive torque transmitted by the movement, in a second operating state of the mechanism. Indeed, the force exerted by the spring 117 is of course less than the drive force of the movement, so that the chronograph operates correctly. The disengagement may be conventional and does not need to be described in this application.

Ainsi, lors d'une opération de remise à zéro, lorsque le mobile de secondes chronographe 110 est débrayé, dans le deuxième état de fonctionnement, la came 112 n'est plus soumise qu'à l'action du palpeur 116, qui la ramène à la position zéro.Thus, during a reset operation, when the mobile seconds chronograph 110 is disengaged, in the second operating state, the cam 112 is no longer subject to the action of the feeler 116, which brings it back at the zero position.

De manière avantageuse, le mécanisme de chronographe comprend un levier de débrayage 50 susceptible d'être déplacé par une commande 52 de remise à zéro. Le levier de débrayage 50 comprend une première zone fonctionnelle 54 agencée pour coopérer avec le mobile d'entraînement 130. La première zone fonctionnelle 54 est avantageusement disposée à l'extrémité d'un bras flexible 56, ladite extrémité pouvant comporter plusieurs niveaux pour atteindre le mobile d'entraînement 130. De manière avantageuse, la force complémentaire exercée par le levier de débrayage 50 sur le mobile d'entraînement 130 permet d'apporter un couple supplémentaire sur le palpeur 116, à l'encontre de la came 112, accélérant et facilitant ainsi la remise à zéro du mobile de secondes chronographe 110.Advantageously, the chronograph mechanism comprises a declutch lever 50 capable of being moved by a reset control 52. The release lever 50 comprises a first functional zone 54 arranged to cooperate with the mobile drive 130. The first functional zone 54 is advantageously arranged at the end of a flexible arm 56, said end possibly comprising several levels to reach the mobile drive 130. Advantageously, the additional force exerted by the release lever 50 on the mobile drive 130 makes it possible to provide an additional torque on the feeler 116, against the cam 112, accelerating and thus facilitating the resetting of the mobile seconds chronograph 110.

Ainsi, le ressort 117 peut être relativement faible, car la force complémentaire exercée par l'utilisateur sur la commande de remise à zéro permet d'avoir un couple suffisant pour assurer le retour à zéro du mobile de secondes chronographe 110. Le frottement du palpeur 116 sur la came 112 perturbe donc faiblement le mouvement, lors du fonctionnement du chronographe.Thus, the spring 117 can be relatively weak, because the additional force exerted by the user on the reset control provides sufficient torque to ensure the return to zero of the mobile seconds chronograph 110. The friction of the feeler 116 on cam 112 therefore slightly disturbs the movement, during the operation of the chronograph.

Simultanément à la remise à zéro du compteur des secondes, le mobile de compteur des minutes 140 doit également être ramené à zéro. Le deuxième palpeur 216, soumis à l'action de son ressort 217, est agencé pour coopérer avec la deuxième came 212 et ramener le mobile de compteur des minutes 140 à zéro. Cependant, pour permettre que l'action du deuxième palpeur 216 soit efficiente, il faut débrayer le cliquet de sécurité 142, qui positionne le mobile de compteur des minutes 140, et débrayer également le mobile d'entraînement 130.Simultaneously with the resetting of the seconds counter, the minute counter mobile 140 must also be reset to zero. The second sensor 216, subjected to the action of its spring 217, is arranged to cooperate with the second cam 212 and bring the minute counter mobile 140 to zero. However, to allow the action of the second probe 216 to be efficient, it is necessary to disengage the safety pawl 142, which positions the minute counter mobile 140, and also disengage drive mobile 130.

Le levier de débrayage 50 est conformé pour réaliser ces fonctions. Tout d'abord, la première zone fonctionnelle 54 est agencée, en coopérant avec le mobile d'entraînement 130, pour sortir le doigt d'entraînement 136 de la denture du mobile de compteur des minutes 140. Le levier de débrayage 50 comprend également une deuxième zone fonctionnelle 58, rigide, agencée pour coopérer avec le cliquet de sécurité 142 et le mettre hors de la denture du mobile de compteur des minutes 140. Celui-ci est alors libre d'être ramené à zéro par l'action du deuxième palpeur 216.The release lever 50 is shaped to perform these functions. First of all, the first functional zone 54 is arranged, by cooperating with the driving wheel set 130, to release the drive finger 136 from the toothing of the minute counter wheel set 140. The release lever 50 also comprises a second functional area 58, rigid, arranged to cooperate with the safety pawl 142 and put it out of the teeth of the minute counter mobile 140. This is then free to be reset by the action of the second feeler 216.

L'action du deuxième palpeur 216 est également renforcée par un actionnement de la commande 52 de remise à zéro. Pour ce faire, le levier de débrayage 50 comprend une troisième zone fonctionnelle 60 agencée pour coopérer avec le deuxième mobile d'entraînement 230. La troisième zone fonctionnelle 60 est avantageusement disposée à l'extrémité d'un bras flexible supplémentaire 62, ladite extrémité pouvant comporter plusieurs niveaux pour atteindre le deuxième mobile d'entraînement 230. De manière avantageuse, la force complémentaire exercée par le levier de débrayage 50 sur le deuxième mobile d'entraînement 230 permet d'apporter un couple supplémentaire sur le deuxième palpeur 216, à l'encontre de la deuxième came 212, accélérant et facilitant ainsi la remise à zéro du mobile de compteur des minutes 140.The action of the second sensor 216 is also reinforced by an actuation of the reset command 52. To do this, the release lever 50 comprises a third functional zone 60 arranged to cooperate with the second mobile drive 230. The third functional zone 60 is advantageously placed at the end of an additional flexible arm 62, said end being able to comprise several levels to reach the second mobile drive 230. Advantageously, the additional force exerted by the release lever 50 on the second mobile drive 230 makes it possible to provide additional torque on the second feeler 216, at the against the second cam 212, thus accelerating and facilitating the resetting of the minute counter mobile 140.

Ainsi, le ressort 217 peut être relativement faible, car la force complémentaire exercée par l'utilisateur sur la commande de remise à zéro permet d'avoir un couple suffisant pour assurer le retour à zéro du mobile de compteur des minutes 140. Le frottement du palpeur 216 sur la came 212 perturbe donc faiblement le mouvement, lors du fonctionnement du chronographe.Thus, the spring 217 can be relatively weak, because the additional force exerted by the user on the reset control provides sufficient torque to ensure the return to zero of the minute counter mobile 140. The friction of the feeler 216 on cam 212 therefore slightly disturbs the movement, during the operation of the chronograph.

Simultanément à la mise à zéro du mobile de compteur des secondes 110 et du mobile de compteur des minutes 140, le mobile de compteur des heures 150 doit également être ramené à zéro. Comme il ressort de la description ci-dessus, le mobile de compteur des heures 150 n'est pas solidaire d'une came qui pourrait assurer son retour à zéro.Simultaneously with the resetting of the seconds counter mobile 110 and the minutes counter mobile 140, the hours counter mobile 150 must also be reset to zero. As emerges from the description above, the hour counter mobile 150 is not attached to a cam which could ensure its return to zero.

Le mobile de compteur des heures 180 est associé à un ressort de rappel 182, ici prenant la forme d'un ressort spiral, agencé pour ramener le mobile dans sa position initiale, qui peut être définie par une butée. On notera que le mobile de compteur des heures 180 est agencé pour effectuer une rotation maximale de 360°. Il comporte en effet une dent tronquée 184, empêchant le deuxième doigt d'entraînement 236 de le faire avancer lorsque la dent tronquée 184 arrive en regard du deuxième mobile d'entraînement 230.The hour counter wheel set 180 is associated with a return spring 182, here taking the form of a spiral spring, arranged to return the wheel set to its initial position, which may be defined by a stop. It will be noted that the hour counter mobile 180 is arranged to perform a maximum rotation of 360°. It in fact comprises a truncated tooth 184, preventing the second drive finger 236 from advancing it when the truncated tooth 184 arrives opposite the second drive mobile 230.

Pour la remise à zéro, la deuxième zone fonctionnelle 58 du levier de débrayage 50 permet d'agir simultanément et en synchronisme sur les deux cliquets de sécurité 142 et 242, qui sont liés l'un à l'autre par la goupille 246 et les deux oblongs. Ainsi, lorsque le levier de débrayage 50 rend le mobile du compteur des heures 180 libre du deuxième cliquet de sécurité 242, le ressort de rappel 182 le ramène à sa position initiale de zéro.For resetting, the second functional zone 58 of the release lever 50 makes it possible to act simultaneously and in synchronism on the two safety pawls 142 and 242, which are linked to each other by the pin 246 and the two oblongs. Thus, when the release lever 50 frees the moving part of the hour counter 180 from the second safety pawl 242, the return spring 182 brings it back to its initial position of zero.

Ainsi, la présente demande propose un système d'entraînement sautant original et particulièrement adapté pour un mécanisme de chronographe, dans lequel le palpeur permet à la fois de relier la roue menante à la roue menée pour l'entraînement de cette dernière, mais aussi participe à la remise à zéro du compteur, en coopérant avec sa came. On évite ainsi de recourir aux traditionnels marteaux et cames en cœur.Thus, the present application proposes an original and particularly suitable jumping drive system for a chronograph mechanism, in which the feeler makes it possible both to connect the driving wheel to the driven wheel for driving the latter, but also participates when resetting the counter, by cooperating with its cam. This avoids having to resort to traditional hammers and heart cams.

L'homme du métier pourra imaginer des variantes découlant de la présente description, donnée à titre non limitatif, la portée de la protection étant délimitée par les revendications. Particulièrement, on relèvera que, sur la base de l'enseignement proposé ci-dessus, l'homme du métier pourra proposer un chronographe dans lequel les différents compteurs ne sont pas coaxiaux, en adaptant la forme des palpeurs et l'agencement des mobiles d'armage et d'entraînement. La forme du levier de débrayage sera adaptée de manière correspondante.Those skilled in the art will be able to imagine variants arising from the present description, given without limitation, the scope of the protection being delimited by the claims. In particular, it will be noted that, on the basis of the teaching proposed above, the person skilled in the art will be able to propose a chronograph in which the various counters are not coaxial, by adapting the shape of the feelers and the arrangement of the mobiles of arming and training. The shape of the release lever will be adapted accordingly.

Claims (14)

  1. Display mechanism, for a timepiece movement, including a wheel (110) for displaying a first quantity comprising a shaft intended to carry a member for displaying said first quantity and carrying, constrained to rotate with it, a first wheel and a cam (112, 212) comprising at least one volute-shaped portion, the display mechanism being arranged so as to be able to have an active first state in which said first wheel is intended to have a kinetic connection with a driving wheel of the timepiece movement to be driven in rotation as a function of said first quantity to be displayed, and a zero reset second state in which the kinematic connection is neutralized to allow said first wheel to return to a predefined position, associated with a predefined position of the display member, the display mechanism further including a feeler-spindle (116, 216) adapted to cooperate with the perimeter of said cam (112, 212) and held bearing against the perimeter of said cam (112, 212) in said first state, said feeler-spindle (116, 216) and the perimeter of said cam (112, 212) being arranged and sized so that said feeler-spindle (116, 216) exerts on said cam (112, 212), in said second state, a return force having a non-radial component adapted to return said first wheel to said predefined position.
  2. Mechanism according to Claim 1, said feeler-spindle (116, 216) being intended to be mounted to rotate on a frame element of the timepiece movement, characterized in that it includes a spring (117, 217) arranged to act on said feeler-spindle (116, 216) and
    to tend to maintain it bearing against the perimeter of said cam (112, 212), so that said feeler-spindle (116, 216) is able to be moved between a first position, associated with a minimum radius zone of said cam (112, 212), and a second position associated with a maximum radius zone of said cam (112, 212), and
    to contribute at least partially to the application of said return force to said cam (112, 212) by said feeler-spindle (116, 216) in said second state.
  3. Mechanism according to Claim 2, characterized in that it includes an arming wheel (118) constrained to rotate with said feeler-spindle (116, 216) and adapted to be subjected to an additional force, in said second state, having properties such that it contributes to the application of said return force to said cam (112, 212) by said feeler-spindle (116, 216).
  4. Mechanism according to Claim 3, characterized in that it further includes a driving wheel (130, 230) having a kinematic connection to said arming wheel (118) and comprising a drive finger (136, 236) adapted, in said first state, to be able to cooperate with a second wheel, forming part of a second display wheel (140) for displaying a second quantity corresponding to a multiple of said first quantity, and to drive it by at least one step in response to the passage of said feeler-spindle (116, 216) from its second position to its first position.
  5. Mechanism according to Claim 4, characterized in that it includes a decoupling lever (50) that can be actuated by a user to apply said additional force to said arming wheel (118) by means of said driving wheel (130, 230) .
  6. Mechanism according to Claim 5, characterized in that it includes a safety pawl (142) arranged to cooperate with said second wheel to retain it annularly, and in that said decoupling lever (50) is also arranged to momentarily deactivate said safety pawl (142) in response to an action of a user.
  7. Mechanism according to one of Claims 4 to 6, characterized in that it includes a second cam (212) comprising at least one volute-shaped portion constrained to rotate with said second wheel and cooperating with an additional feeler-spindle (216) subjected to the action of an additional spring (217) for causing it to pivot, in said first state, between a first position, associated with a minimum radius zone of said second cam (212), and a second position, associated with a maximum radius zone of said second cam (212), and so that said additional feeler-spindle (216) exerts on said second cam (212), in said second state, a return force having a non-radial component adapted to return said second wheel to a corresponding predefined position.
  8. Mechanism according to Claim 7, characterized in that said additional feeler-spindle (216) is fastened to an additional arming wheel having a kinematic connection with an additional driving wheel (230) comprising a driving finger (236) adapted, in said first state, to be able to cooperate with a third wheel, forming part of a third display wheel (180), for displaying a third quantity corresponding to a multiple of said second quantity, and to drive it by at least one step in response to the passage of said additional feeler-spindle (216) from its second position to its first position.
  9. Mechanism according to Claim 7 or 8, including a decoupling lever (50) that can be actuated by a user to apply said additional force to said arming wheel (118) by means of said driving wheel (130), characterized in that said decoupling lever (50) is also adapted to apply an additional force to said additional arming wheel, in said second state, having properties such that said additional force contributes to the application of said internal force to said second cam (212) by said additional feeler-spindle (216).
  10. Mechanism according to one of Claims 4 to 7, characterized in that it is arranged to enable the display of measured times, said first display wheel (110, 140) being intended to enable the display of the seconds, respectively the minutes, of measured times and the second display wheel (140, 180) being intended to enable the display of the minutes, respectively the hours, of measured times.
  11. Mechanism according to one of Claims 8 and 9, characterized in that it is arranged to enable the display of measured times, said first, second and third display wheels (110, 140, 180) being intended to enable the display of, respectively, the seconds, minutes and hours of measured times.
  12. Timepiece movement including a mechanism according to one of the preceding claims.
  13. Timepiece including a timepiece movement according to Claim 12.
  14. Timepiece according to Claim 13, characterized in that it comprises a chronograph mechanism associated with respective coaxial displays of the units of measured times that are intended to be displayed.
EP17807783.0A 2016-11-17 2017-11-17 Instantaneous drive system and chronograph mechanism provided with such a system Active EP3542223B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16199406.6A EP3324245A1 (en) 2016-11-17 2016-11-17 Instantaneous drive system and chronograph mechanism provided with such a system
PCT/EP2017/079695 WO2018091696A1 (en) 2016-11-17 2017-11-17 Display mechanism with zero reset function

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EP3542223A1 EP3542223A1 (en) 2019-09-25
EP3542223B1 true EP3542223B1 (en) 2022-03-02

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EP16199406.6A Withdrawn EP3324245A1 (en) 2016-11-17 2016-11-17 Instantaneous drive system and chronograph mechanism provided with such a system
EP17807783.0A Active EP3542223B1 (en) 2016-11-17 2017-11-17 Instantaneous drive system and chronograph mechanism provided with such a system

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US (1) US11300927B2 (en)
EP (2) EP3324245A1 (en)
JP (1) JP7042821B2 (en)
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3486735B1 (en) * 2017-11-20 2020-09-30 Montres Breguet S.A. Second reset clock mechanism with snail cam
EP4307052A1 (en) 2022-07-14 2024-01-17 Manufacture d'Horlogerie Audemars Piguet SA Chronograph mechanism for a clockwork

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DE40770C (en) * E. HEUER in Biel, Schweiz Innovation in chronograph pocket watches
DE701496C (en) 1938-05-25 1941-01-17 Ebauches A G Stopwatch movement
CH690047A5 (en) * 1996-02-01 2000-03-31 Gerald Genta Sa retrograde timepiece minutes, including wristwatch.
CH690630A5 (en) * 1997-03-24 2000-11-15 Leschot Sa Watch incorporating a retrograde dial type display of the day of the month where the days are displayed on a dial sector with markings indicating days between 1 and 31 and a hand pointing to the day of the month
DE19852347C2 (en) 1998-11-13 2001-02-08 Lange Uhren Gmbh Minute counter of a clock
DE10200284C1 (en) 2002-01-07 2003-01-02 Walter Haselberger Timepiece analogue display device has minutes display extending over angular range of less than 360 degrees with jumping between 60 minutes and 0 minutes positions
US6975561B2 (en) * 2002-06-13 2005-12-13 Vaucher Manufacture Fleurier S.A. Chronograph mechanism
ATE316663T1 (en) 2002-10-07 2006-02-15 Vaucher Mft Fleurier Sa CHRONOGRAPH MOVEMENT
CH699143B1 (en) * 2005-02-14 2010-01-29 Mct Holding S A Jumping display mechanism for timepiece movement, has snail type cam including increasing diameter concentric bearings connected between each other, and jumper maintaining angular position of cam in two successive steps
CH702137B1 (en) 2007-02-05 2011-05-13 Patek Philippe Sa Geneve Device for driving and setting an instantaneous counter and timepiece including such a device.
EP1978424B1 (en) * 2007-04-04 2011-11-02 Montres Journe S.A. Chronograph
CH700302A2 (en) * 2009-01-21 2010-07-30 Montblanc Simplo Gmbh Chronograph.
CH700753B1 (en) 2009-04-15 2014-03-14 Patek Philippe Sa Geneve Mechanism of instantaneous counter and snail cam for such a mechanism.
CH703361A2 (en) * 2010-06-22 2011-12-30 Artisans Horlogers Sarl Movement clock having chronograph functions and account-a-down.
CH704915B1 (en) * 2011-05-11 2016-02-29 Manuf La Joux Perret Sa A display device jumping improved.
EP2728420B1 (en) * 2012-11-06 2018-01-03 Montres Breguet SA Astronomical watch
CH707233A1 (en) * 2012-11-22 2014-05-30 Eterna Ag Uhrenfabrik Minutzenzähler a watch, in particular a chronograph.
DE102013103180B4 (en) * 2013-03-28 2014-11-13 Uwe Heinz Chronograph
EP2881810B1 (en) * 2013-12-03 2021-02-24 ETA SA Manufacture Horlogère Suisse Method for displaying a timing trend and related timepiece
JP3192199U (en) 2014-05-22 2014-07-31 昭安 宮澤 Clock mechanism
ES2666046T3 (en) * 2014-10-30 2018-04-30 Société Anonyme de la Manufacture d'Horlogerie Audemars Piguet & Cie Chronograph mechanism and watch piece that includes its application

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US20190271948A1 (en) 2019-09-05
EP3324245A1 (en) 2018-05-23
CN110050236A (en) 2019-07-23
JP2020500312A (en) 2020-01-09
US11300927B2 (en) 2022-04-12
JP7042821B2 (en) 2022-03-28
EP3542223A1 (en) 2019-09-25
WO2018091696A1 (en) 2018-05-24

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