EP3502793B1 - Surprise mechanism - Google Patents

Surprise mechanism Download PDF

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Publication number
EP3502793B1
EP3502793B1 EP17209992.1A EP17209992A EP3502793B1 EP 3502793 B1 EP3502793 B1 EP 3502793B1 EP 17209992 A EP17209992 A EP 17209992A EP 3502793 B1 EP3502793 B1 EP 3502793B1
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EP
European Patent Office
Prior art keywords
surprise
jumper
snail
piece
cam
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EP17209992.1A
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German (de)
French (fr)
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EP3502793A1 (en
Inventor
Christophe Bifrare
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Montres Breguet SA
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Montres Breguet SA
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Priority to EP17209992.1A priority Critical patent/EP3502793B1/en
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    • 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
    • G04B21/00—Indicating the time by acoustic means
    • G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
    • G04B21/04—Hour wheels; Racks or rakes; Snails or similar control 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
    • G04B21/00—Indicating the time by acoustic means
    • G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
    • G04B21/12—Reiterating watches or clocks

Definitions

  • the invention relates to the field of timepieces, and more precisely to a striking timepiece comprising a surprise isolating device arranged to keep the surprise jumper away from the surprise in the rest position.
  • timepieces capable of striking the quarters and the minutes include a retractable cam called "surprise”, which is associated with the minute snail.
  • the end of each of the four branches of this snail must be narrowed to allow the minute finder to reach the rung closest to the center of the snail, when fourteen minutes must be struck.
  • the result is that the outer scale of the snail, which corresponds to zero ringing minutes, extends over an angle less than the normal value of 6 ° corresponding to the rotation of the center mobile in one minute.
  • the four branches of surprise serve to temporarily increase this level at the start of each quarter of an hour.
  • the jumper of surprise controls the pivoting of the surprise on the snail by leaning against the end of one of the branches of the surprise.
  • surprise isolating devices which keep the jumper out of surprise as long as the minute strike is not requested.
  • a surprise isolator on pages 175 to 181 of the third edition of the book by F. Lecoultre entitled “Les Montres complitées ".
  • This device is formed by an additional lever with two branches, one of which rests against the ringing control when the latter is at rest, so that the other branch keeps the jumper at a distance during this time. surprise, against the force of the spring acting on the jumper
  • the ringing control acts on the one hand on the rack and on the other hand on the surprise isolator.
  • the surprise isolator function requires a relatively large additional lever, which is inconvenient in an already very complicated mechanism.
  • the present invention makes it possible to avoid this drawback by virtue of a very simple and compact construction.
  • An aim of the present invention is to overcome all or part of the drawbacks mentioned above by providing a surprise mechanism that is simple to implement and comprising few parts.
  • the invention also aims, at least in one particular embodiment, to provide a surprise mechanism reducing the wear of the components.
  • the surprise isolator device is in one piece with the surprise jumper and comprises a locking member arranged to cooperate with the hours piece so as to keep the surprise jumper apart when the hours piece is in its potion. rest.
  • the invention also relates to a timepiece comprising a surprise mechanism according to the invention.
  • Mechanism 1 shown in figure 1 represents a first snail, called the 3 minutes snail, equipped with four branches and mounted to pivot around an axis A.
  • a quarter snail 4 is also mounted to pivot coaxially around the axis A. Both are driven by a movement watchmaker at the rate of one revolution per hour, in an anti-clockwise direction. Indeed, unlike traditional repeats, the repetition of the present invention comprises levers mounted on the bridge side and not on the dial side.
  • a surprise 5 is positioned between the two snails 3 and 4 and pivots freely around the axis A.
  • the surprise 5 comprises, in a conventional manner, four branches, each being arranged behind one of the branches of the minute snail 3.
  • minutes 3 comprises two pins 30 which each rest in an oblong hole 31 formed in the surprise 5 and through which it drives it.
  • a leaf spring 50 acting as a return spring is arranged in one of the branches of the surprise 5 so as to keep the latter behind the snail of the minutes 3, the leaf spring being directly formed in the surprise.
  • the leaf spring 50 is arranged to cooperate with a pin 51 integral with the snail of the minutes 3, the pin 51 moving in a housing 52 formed at the base of one of the branches of the surprise 5, the free end of the leaf spring 50 opening into housing 52.
  • the surprise 5 is likely to move relative to the 3 minutes snail between a first position in which it does not intervene in the operation of the chime and a second position in which it extends the end of the 3 minutes snail, so as to reconstitute the scale corresponding to the first minute of a shift.
  • the mechanism also includes a 2 hour piece which is pivotally mounted on a bridge or plate.
  • a surprise jumper 8 is pivotally mounted on a bridge or a plate.
  • the jumper 8 is biased by a spring 6 which exerts a force against the jumper 8 to push it in the direction of the surprise 5, the jumper having a spout 83 which has an inclined plane serving to rotate the surprise 5 against the force. of the aforementioned return spring.
  • the jumper 8 visible in detail at figure 4 and the surprise isolator device are integral and form a single unit, the surprise isolator device comprising locking means configured to keep the spout 83 of the jumper 8 out of the path of the surprise 5.
  • These locking means comprise a first cam 80, integral with jumper 8 and also pivoting around axis A. More precisely, first cam 80 is arranged to cooperate with a machining of shape 20 machined in the hours piece 2, and thus keeping jumper 8 away surprise 5 when the hour piece 2 is in the rest position.
  • rest position is meant the position in which the hour piece 2 is located when the alarm is not engaged.
  • the jumper 8 also includes a second cam 81 provided to cooperate with a spring 6 which is arranged to exert on the second cam 81, and therefore indirectly on the jumper 8, a force tending to bring the jumper 8 to bear against the surprise 5.
  • the second cam 81 comprises a guide surface 82 for guiding the end 60 of the spring 6 and axially maintaining the jumper 8 in its place.
  • the first cam 80 is blocked by the shape machining 20 of the hour piece 2 and opposes the force exerted by the spring 6 and keeps the jumper 8 away from surprise 5.
  • the first cam 80 is released, under the effect of the rotation of the hour piece 2, thus allowing the spring 6 to bring the jumper 8 against the surprise 5 by exerting a force on the second cam 81.
  • the jumper 8 can move between a first lockable position, in which it does not intersect the trajectory of the surprise 5, and at least a second position in which it intersects the trajectory of the surprise 5.
  • the jumper 8 is likely, in moving from its first to its second position, to cooperate with one of the end portions of the surprise to bring the latter from its first to its second position.
  • the hour star 7 moves forward by one step per hour and drives the coaxially mounted 22 hour snail, the other parts shown remaining stationary as long as the strike control is not actuated.
  • the first cam 80 disposed on the surprise jumper 8 is engaged with the shape machining 20 of the hour piece 2 and keeps the jumper 8 away from the path of the ends of the arms of surprise 5. In this way, the first cam 80 and the shape machining 20 make it possible to keep the jumper apart.
  • the hour piece 2 keeps the jumper 8 away from the surprise 5 via the first cam 80 which is blocked by the shape machining of the hour piece 2.
  • the hour piece 2 When the bell control is operated as in figures 3a and 3b , the hour piece 2 is rotated under the action of a spring for example.
  • the first cam 80 is released and allows the surprise jumper 8 to pivot in the direction of the minutes 3 snail under the action of the spring 6 which presses on the second cam 81. If at that moment one of the branches of the snail of minutes 3 is near one of the inclined sides of the beak of the jumper 8, this side rests against the corresponding branch of the surprise 5 and puts it in the appropriate position, in a known manner.
  • the hour piece 2 continues to pivot until its feeler 21 abuts against the hour snail 22. Then, the mechanism shown is returned to the rest position of the clock. figure 1 by the action of the striking barrel.
  • the first cam 80 of the surprise isolator again lifts the surprise jumper 8 and keeps it away from the surprise 5 until the bell control is actuated again.
  • the jumper 8 is designed to be driven into a plate (not shown in the figures) and comprises, at the end driven into the plate, an oriented loop 84 mounted so as to be able to limit the travel of the jumper 8 in the low position, the loop 84 cooperating with a pin 85 when one of the four branches of the minute snail is not present.
  • a surprise isolating device can also cooperate with a surprise associated with another snail, including a snail of quarters for example.
  • the invention can be used in any timepiece provided with a bell, in particular a minute repeater or grand strike watch.

Description

Domaine de l'inventionField of the invention

L'invention concerne le domaine des pièces d'horlogerie, et plus précisément une pièce d'horlogerie à sonnerie comportant un dispositif isolateur de surprise agencé pour tenir le sautoir de surprise à l'écart de la surprise en position de repos.The invention relates to the field of timepieces, and more precisely to a striking timepiece comprising a surprise isolating device arranged to keep the surprise jumper away from the surprise in the rest position.

Arrière-plan de l'inventionBackground of the invention

De manière classique, les pièces d'horlogerie capables de sonner les quarts et les minutes comportent une came escamotable appelée "surprise", qui est associée au limaçon des minutes. L'extrémité de chacune des quatre branches de ce limaçon doit être rétrécie pour permettre au palpeur des minutes d'atteindre l'échelon le plus proche du centre du limaçon, quand quatorze minutes doivent être sonnées. Il en résulte que l'échelon extérieur du limaçon, qui correspond à zéro minute de sonnerie, s'étend sur un angle inférieur à la valeur normale de 6° correspondant à la rotation du mobile de centre en une minute. Les quatre branches de la surprise servent à agrandir temporairement cet échelon au début de chaque quart d'heure. Le sautoir de surprise commande le pivotement de la surprise sur le limaçon en s'appuyant contre l'extrémité d'une des branches de la surprise. Dans les anciennes pièces d'horlogerie, cet appui était continu durant les dernières minutes d'un quart d'heure et les premières minutes du quart d'heure suivant. Le frottement du sautoir sur la surprise pendant cette durée produisait une usure notable des pièces en contact et tendait à ralentir le mouvement d'horlogerie.Conventionally, timepieces capable of striking the quarters and the minutes include a retractable cam called "surprise", which is associated with the minute snail. The end of each of the four branches of this snail must be narrowed to allow the minute finder to reach the rung closest to the center of the snail, when fourteen minutes must be struck. The result is that the outer scale of the snail, which corresponds to zero ringing minutes, extends over an angle less than the normal value of 6 ° corresponding to the rotation of the center mobile in one minute. The four branches of surprise serve to temporarily increase this level at the start of each quarter of an hour. The jumper of surprise controls the pivoting of the surprise on the snail by leaning against the end of one of the branches of the surprise. In older timepieces, this pressure was continuous during the last minutes of a quarter of an hour and the first minutes of the following quarter of an hour. The friction of the jumper on the surprise during this period produced significant wear of the parts in contact and tended to slow down the clockwork movement.

Pour pallier cet inconvénient, on a inventé les dispositifs isolateurs de surprise, qui maintiennent le sautoir hors de prise de la surprise tant que la sonnerie des minutes n'est pas demandée. On trouve une description détaillée d'un exemple d'un isolateur de surprise aux pages 175 à 181 de la troisième édition du livre de F. Lecoultre intitulé "Les montres compliquées ". Ce dispositif est formé par un levier supplémentaire à deux branches, dont l'une s'appuie contre la commande de sonnerie lorsque celle-ci est au repos, pour que l'autre branche tienne pendant ce temps le sautoir de surprise à distance de la surprise, contre la force du ressort agissant sur le sautoir. La commande de sonnerie agit d'une part sur la pièce à crémaillère et d'autre part sur l'isolateur de surprise.To overcome this drawback, surprise isolating devices have been invented, which keep the jumper out of surprise as long as the minute strike is not requested. There is a description detailed example of a surprise isolator on pages 175 to 181 of the third edition of the book by F. Lecoultre entitled "Les Montres complitées ". This device is formed by an additional lever with two branches, one of which rests against the ringing control when the latter is at rest, so that the other branch keeps the jumper at a distance during this time. surprise, against the force of the spring acting on the jumper The ringing control acts on the one hand on the rack and on the other hand on the surprise isolator.

Dans le brevet EP 1 959 318 , il est décrit un isolateur de surprise comportant aussi un levier supplémentaire, mais agencé différemment. Dans ce cas, l'un des bras du levier isolateur prend appui sur la pièce à crémaillère pour que le levier garde une position telle que son autre bras retienne le sautoir de surprise. La commande de sonnerie agit sur le premier bras pour faire pivoter le levier de façon à pousser la pièce à crémaillère et libérer pendant ce temps le sautoir de surprise. Par contre, dans ce mécanisme le palpeur des heures n'est pas monté sur la pièce à crémaillère. On connait également du document EP 1 416 342 un tel dispositif.In the patent EP 1 959 318 , there is described a surprise isolator also comprising an additional lever, but arranged differently. In this case, one of the arms of the isolating lever is supported on the rack piece so that the lever keeps a position such that its other arm retains the jump jump. The ringing control acts on the first arm to rotate the lever so as to push the rack piece and during this time release the jumper of surprise. On the other hand, in this mechanism the hour feeler is not mounted on the rack part. We also know from the document EP 1 416 342 such a device.

Dans les deux dispositifs susmentionnés, la fonction d'isolateur de surprise nécessite un levier supplémentaire relativement grand, qui est gênant dans un mécanisme déjà très compliqué. La présente invention permet d'éviter cet inconvénient grâce à une construction très simple et peu encombrante.In the two aforementioned devices, the surprise isolator function requires a relatively large additional lever, which is inconvenient in an already very complicated mechanism. The present invention makes it possible to avoid this drawback by virtue of a very simple and compact construction.

Résumé de l'inventionSummary of the invention

Un but de la présente invention est de pallier tout ou partie des inconvénients cités précédemment en fournissant un mécanisme de surprise simple à mettre en œuvre et comprenant peu de pièces.An aim of the present invention is to overcome all or part of the drawbacks mentioned above by providing a surprise mechanism that is simple to implement and comprising few parts.

L'invention a également pour but, au moins dans un mode de réalisation particulier, de fournir un mécanisme de surprise réduisant l'usure des composants.The invention also aims, at least in one particular embodiment, to provide a surprise mechanism reducing the wear of the components.

A cet effet, l'invention concerne un mécanisme de surprise pour pièce d'horlogerie à sonnerie comprenant :

  • un surprise montée coaxiale entre un premier limaçon et un deuxième limaçon,
  • une pièce des heures reliée à une commande de sonnerie et agencée pour pivoter à partir d'une position de repos lorsque ladite commande est actionnée,
  • un sautoir de surprise agencé pour s'appuyer contre la surprise sous l'effet d'un ressort pour faire pivoter la surprise par rapport au premier limaçon,
  • et un dispositif isolateur de surprise agencé pour tenir le sautoir de surprise à l'écart de la surprise lorsque la pièce des heures est en position de repos.
To this end, the invention relates to a surprise mechanism for a striking timepiece comprising:
  • a surprise coaxial rise between a first snail and a second snail,
  • an hours piece connected to a striking control and arranged to pivot from a rest position when said control is actuated,
  • a jumper of surprise arranged to lean against the surprise under the effect of a spring to rotate the surprise relative to the first snail,
  • and a surprise isolator device arranged to keep the surprise jumper away from surprise when the hours piece is in the rest position.

Selon l'invention, le dispositif isolateur de surprise est monobloc avec le sautoir de surprise et comprend un organe de verrouillage agencé pour coopérer avec la pièce des heures de manière à maintenir écarté le sautoir de la surprise lorsque la pièce des heures est dans sa potion de repos.According to the invention, the surprise isolator device is in one piece with the surprise jumper and comprises a locking member arranged to cooperate with the hours piece so as to keep the surprise jumper apart when the hours piece is in its potion. rest.

Grâce à ces caractéristiques, un tel mécanisme de surprise permet de d'obtenir un système relativement simple, compact et nécessitant peu de pièces pour sa mise en œuvre.Thanks to these characteristics, such a surprise mechanism makes it possible to obtain a relatively simple, compact system requiring few parts for its implementation.

Conformément à d'autres variantes avantageuses de l'invention :

  • ledit organe de verrouillage comprend une première came solidaire dudit sautoir de surprise ;
  • la pièce des heures comprend un usinage de forme agencé pour coopérer avec ladite came ;
  • le sautoir comprend une deuxième came agencée pour coopérer avec le dit ressort ;
  • la deuxième came est solidaire du sautoir et comprend une surface agencée pour coopérer avec le ressort ;
  • le premier limaçon est un limaçon des minutes ;
  • le deuxième limaçon est un limaçon des heures ;
  • la surprise comprend un ressort agencé pour coopérer avec le premier limaçon et agencé pour maintenir la surprise dans sa position de repos ;
  • le sautoir de surprise comprend une ganse de façon à limiter la course du sautoir de surprise en position basse.
In accordance with other advantageous variants of the invention:
  • said locking member comprises a first cam integral with said jumper;
  • the hour piece comprises a shaped machining arranged to cooperate with said cam;
  • the jumper comprises a second cam arranged to cooperate with said spring;
  • the second cam is integral with the jumper and comprises a surface arranged to cooperate with the spring;
  • the first snail is a snail of minutes;
  • the second snail is an hour snail;
  • the surprise comprises a spring arranged to cooperate with the first snail and arranged to maintain the surprise in its rest position;
  • the surprise jumper includes a loop so as to limit the travel of the surprise jumper in the low position.

Description sommaire des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lecture de la description suivante d'un mode de réalisation particulier de l'invention, donné à titre de simple exemple illustratif et non limitatif, et des figures annexées, parmi lesquelles :

  • la figure 1 est une vue en perspective d'un mécanisme au repos conforme à l'invention ;
  • les figures 2a et 2b sont respectivement des vues de dessus et de dessous conforme à l'invention ;
  • les figures 3a et 3b sont respectivement sont un vue en perspective et une vue de dessous d'un mécanisme activé conforme à l'invention ;
  • la figure 4 est une vue en perspective d'un sautoir de surprise conforme à l'invention ;
  • la figure 5 est une vue de dessus d'une surprise conforme à l'invention ;
  • la figure 6 est une vue de dessous d'un sautoir de surprise conforme à l'invention.
Other characteristics and advantages of the invention will emerge more clearly on reading the following description of a particular embodiment of the invention, given by way of simple illustrative and non-limiting example, and the appended figures, among which :
  • the figure 1 is a perspective view of a mechanism at rest according to the invention;
  • the figures 2a and 2b are respectively top and bottom views according to the invention;
  • the figures 3a and 3b are respectively a perspective view and a bottom view of an activated mechanism according to the invention;
  • the figure 4 is a perspective view of a jumper according to the invention;
  • the figure 5 is a top view of a surprise according to the invention;
  • the figure 6 is a bottom view of a jumper according to the invention.

L'invention concerne également une pièce d'horlogerie comprenant un mécanisme de surprise conforme à l'invention.The invention also relates to a timepiece comprising a surprise mechanism according to the invention.

Description détaillée des modes de réalisation préférésDetailed description of the preferred embodiments

Un mécanisme de surprise conforme à l'invention va maintenant être décrit dans ce qui suit faisant référence conjointement aux figures 1 à 5. Le dispositif de sonnerie dans lequel il peut être intégré ne sera pas décrit en détail.A surprise mechanism in accordance with the invention will now be described in the following with reference jointly to the figures 1 to 5 . The ringing device in which it can be integrated will not be described in detail.

Le mécanisme 1 représenté à la figure 1 représente un premier limaçon, dit limaçon des minutes 3, doté de quatre branches et monté pivotant autour d'un axe A. Un limaçon des quarts 4 est également monté pivotant coaxialement autour de l'axe A. Tous les deux sont entraînés par un mouvement horloger au rythme d'un tour par heure, dans le sens inverse des aiguilles d'une montre. En effet, contrairement aux répétitions traditionnelles, la répétition de la présente invention comprend des leviers montés côté ponts et non côté cadran.Mechanism 1 shown in figure 1 represents a first snail, called the 3 minutes snail, equipped with four branches and mounted to pivot around an axis A. A quarter snail 4 is also mounted to pivot coaxially around the axis A. Both are driven by a movement watchmaker at the rate of one revolution per hour, in an anti-clockwise direction. Indeed, unlike traditional repeats, the repetition of the present invention comprises levers mounted on the bridge side and not on the dial side.

Une surprise 5 est positionnée entre les deux limaçons 3 et 4 et pivote librement autour de l'axe A. La surprise 5 comporte, de manière classique, quatre branches, chacune étant disposée derrière une des branches du limaçon des minutes 3. Le limaçon des minutes 3 comprend deux goupilles 30 qui reposent chacune dans un trou oblong 31 formé dans la surprise 5 et par l'intermédiaire de laquelle il l'entraine.A surprise 5 is positioned between the two snails 3 and 4 and pivots freely around the axis A. The surprise 5 comprises, in a conventional manner, four branches, each being arranged behind one of the branches of the minute snail 3. minutes 3 comprises two pins 30 which each rest in an oblong hole 31 formed in the surprise 5 and through which it drives it.

Selon l'invention et tel qu'illustré à la figure 5, un lame ressort 50 faisant office de ressort de rappel est agencée dans l'une des branches de la surprise 5 de manière à maintenir cette dernière derrière le limaçon des minutes 3, lame ressort étant directement formée dans la surprise. La lame ressort 50 est agencé pour coopérer avec une cheville 51 solidaire du limaçon des minutes 3, la cheville 51 se déplaçant dans un logement 52 formé à la base d'une des branches de la surprise 5, l'extrémité libre de la lame ressort 50 débouchant dans le logement 52.According to the invention and as illustrated on figure 5 , a leaf spring 50 acting as a return spring is arranged in one of the branches of the surprise 5 so as to keep the latter behind the snail of the minutes 3, the leaf spring being directly formed in the surprise. The leaf spring 50 is arranged to cooperate with a pin 51 integral with the snail of the minutes 3, the pin 51 moving in a housing 52 formed at the base of one of the branches of the surprise 5, the free end of the leaf spring 50 opening into housing 52.

La surprise 5 est susceptible de se déplacer par rapport au limaçon des minutes 3 entre une première position dans laquelle elle n'intervient pas dans le fonctionnement de la sonnerie et une deuxième position dans laquelle elle prolonge l'extrémité du limaçon des minutes 3, de manière à reconstituer l'échelon correspondant à la première minute d'un quart.The surprise 5 is likely to move relative to the 3 minutes snail between a first position in which it does not intervene in the operation of the chime and a second position in which it extends the end of the 3 minutes snail, so as to reconstitute the scale corresponding to the first minute of a shift.

Le mécanisme comprend également une pièce des heures 2 qui est montée de manière pivotante sur un pont ou une platine.The mechanism also includes a 2 hour piece which is pivotally mounted on a bridge or plate.

Un sautoir de surprise 8 est monté de manière pivotante sur un pont ou une platine. Avantageusement, le sautoir 8 est sollicité par un ressort 6 qui exerce une force contre le sautoir 8 pour le pousser en direction de la surprise 5, le sautoir ayant un bec 83 qui présente un plan incliné servant à faire pivoter la surprise 5 contre la force du ressort de rappel susmentionné.A surprise jumper 8 is pivotally mounted on a bridge or a plate. Advantageously, the jumper 8 is biased by a spring 6 which exerts a force against the jumper 8 to push it in the direction of the surprise 5, the jumper having a spout 83 which has an inclined plane serving to rotate the surprise 5 against the force. of the aforementioned return spring.

Selon l'invention, le sautoir 8 visible en détail à la figure 4 et le dispositif isolateur de surprise sont solidaires et forment un même élément monobloc, le dispositif isolateur de surprise comprenant des moyens de blocage configurés pour maintenir le bec 83 du sautoir 8 en dehors de la trajectoire de la surprise 5. Ces moyens de blocage comprennent une première came 80, solidaire du sautoir 8 et pivotant également autour de l'axe A. Plus précisément, la première came 80 est agencée pour coopérer avec un usinage de forme 20 usiné dans la pièce des heures 2, et maintenant ainsi le sautoir 8 éloigné de la surprise 5 lorsque la pièce des heures 2 est en position de repos. Par position de repos, on entend position dans laquelle se trouve la pièce des heures 2 lorsque la sonnerie n'est pas enclenchée.According to the invention, the jumper 8 visible in detail at figure 4 and the surprise isolator device are integral and form a single unit, the surprise isolator device comprising locking means configured to keep the spout 83 of the jumper 8 out of the path of the surprise 5. These locking means comprise a first cam 80, integral with jumper 8 and also pivoting around axis A. More precisely, first cam 80 is arranged to cooperate with a machining of shape 20 machined in the hours piece 2, and thus keeping jumper 8 away surprise 5 when the hour piece 2 is in the rest position. By rest position is meant the position in which the hour piece 2 is located when the alarm is not engaged.

Le sautoir 8 comprend également une deuxième came 81 prévue pour coopérer avec un ressort 6 qui est agencé pour exercer sur la deuxième came 81, et donc indirectement sur le sautoir 8, une force tendant à amener le sautoir 8 en appui contre la surprise 5. Avantageusement, La deuxième came 81 comprend une surface de guidage 82 pour guider l'extrémité 60 du ressort 6 et maintenir axialement le sautoir 8 à sa place.The jumper 8 also includes a second cam 81 provided to cooperate with a spring 6 which is arranged to exert on the second cam 81, and therefore indirectly on the jumper 8, a force tending to bring the jumper 8 to bear against the surprise 5. Advantageously, the second cam 81 comprises a guide surface 82 for guiding the end 60 of the spring 6 and axially maintaining the jumper 8 in its place.

Ainsi, tant que la sonnerie n'est pas activée, la première came 80 est bloquée par l'usinage de forme 20 de la pièce des heures 2 et s'oppose à la force exercée par le ressort 6 et maintien le sautoir 8 éloigné de de la surprise 5. Lorsque la sonnerie est enclenchée, la première came 80 est libérée, sous l'effet de la rotation de la pièce des heures 2, permettant ainsi au ressort 6 d'amener le sautoir 8 contre la surprise 5 en exerçant une force sur la deuxième came 81.Thus, as long as the alarm is not activated, the first cam 80 is blocked by the shape machining 20 of the hour piece 2 and opposes the force exerted by the spring 6 and keeps the jumper 8 away from surprise 5. When the alarm is engaged, the first cam 80 is released, under the effect of the rotation of the hour piece 2, thus allowing the spring 6 to bring the jumper 8 against the surprise 5 by exerting a force on the second cam 81.

Ainsi, le sautoir 8 peut évoluer entre une première position blocable, dans laquelle il ne coupe pas la trajectoire de la surprise 5, et au moins une deuxième position dans laquelle il coupe la trajectoire de la surprise 5. Le sautoir 8 est susceptible, en passant de sa première à sa deuxième position, de coopérer avec une des portions extrêmales de la surprise pour amener cette dernière de sa première à sa deuxième position.Thus, the jumper 8 can move between a first lockable position, in which it does not intersect the trajectory of the surprise 5, and at least a second position in which it intersects the trajectory of the surprise 5. The jumper 8 is likely, in moving from its first to its second position, to cooperate with one of the end portions of the surprise to bring the latter from its first to its second position.

Dans la position de repos illustrée par les figures 1, 2a et 2b, l'étoile des heures 7 avance d'un pas par heure et entraine le limaçon des heures 22 monté coaxialement, les autres pièces représentées restant immobiles tant que la commande de sonnerie n'est pas actionnée. Dans cette position de repos, la première came 80 disposée sur le sautoir de surprise 8 est en prise avec l'usinage de forme 20 de la pièce des heures 2 et maintient le sautoir 8 à l'écart de la trajectoire des extrémités des bras de la surprise 5. De cette manière, la première came 80 et l'usinage de forme 20 permettent de maintenir à l'écart le sautoir.In the rest position illustrated by the figures 1, 2a and 2b , the hour star 7 moves forward by one step per hour and drives the coaxially mounted 22 hour snail, the other parts shown remaining stationary as long as the strike control is not actuated. In this rest position, the first cam 80 disposed on the surprise jumper 8 is engaged with the shape machining 20 of the hour piece 2 and keeps the jumper 8 away from the path of the ends of the arms of surprise 5. In this way, the first cam 80 and the shape machining 20 make it possible to keep the jumper apart.

Dans la position de repos représentée sur la figure 1, la pièce des heures 2 maintient le sautoir 8 éloigné de la surprise 5 via la première came 80 qui est bloquée par l'usinage de forme de la pièce des heures 2.In the rest position shown in figure 1 , the hour piece 2 keeps the jumper 8 away from the surprise 5 via the first cam 80 which is blocked by the shape machining of the hour piece 2.

Lorsque la commande de sonnerie est actionnée comme aux figures 3a et 3b, la pièce des heures 2 est entraînée en rotation sous l'action d'un ressort par exemple. Au début de la rotation de la pièce de heures 2, la première came 80 est libérée et laisse le sautoir de surprise 8 pivoter en direction du limaçon des minutes 3 sous l'action du ressort 6 qui appuie sur la deuxième came 81. Si à ce moment-là l'une des branches du limaçon des minutes 3 se trouve à proximité d'un des pans inclinés du bec du sautoir 8, ce pan s'appuie contre la branche correspondante de la surprise 5 et met celle-ci dans la position appropriée, de manière connue. La pièce des heures 2 continue de pivoter jusqu'à ce que son palpeur 21 bute contre le limaçon des heures 22. Ensuite, le mécanisme représenté est ramené à la position de repos de la figure 1 par l'action du barillet de sonnerie. La première came 80 de l'isolateur de surprise soulève de nouveau le sautoir de surprise 8 et le tient à l'écart de la surprise 5 tant que la commande de sonnerie n'est pas actionnée à nouveau.When the bell control is operated as in figures 3a and 3b , the hour piece 2 is rotated under the action of a spring for example. At the start of the rotation of the hour piece 2, the first cam 80 is released and allows the surprise jumper 8 to pivot in the direction of the minutes 3 snail under the action of the spring 6 which presses on the second cam 81. If at that moment one of the branches of the snail of minutes 3 is near one of the inclined sides of the beak of the jumper 8, this side rests against the corresponding branch of the surprise 5 and puts it in the appropriate position, in a known manner. The hour piece 2 continues to pivot until its feeler 21 abuts against the hour snail 22. Then, the mechanism shown is returned to the rest position of the clock. figure 1 by the action of the striking barrel. The first cam 80 of the surprise isolator again lifts the surprise jumper 8 and keeps it away from the surprise 5 until the bell control is actuated again.

Comme on peut l'observer à la figure 6, le sautoir 8 est agencé pour être chassé dans une platine (non représentée sur les figures) et comprend, à l'extrémité chassée dans la platine, une ganse orientée 84 montée de façon à pouvoir limiter la course du sautoir 8 en position basse, la ganse 84 coopérant avec un pion 85 lorsque l'une des quatre branches du limaçon des minutes n'est pas présente.As can be seen from figure 6 , the jumper 8 is designed to be driven into a plate (not shown in the figures) and comprises, at the end driven into the plate, an oriented loop 84 mounted so as to be able to limit the travel of the jumper 8 in the low position, the loop 84 cooperating with a pin 85 when one of the four branches of the minute snail is not present.

Bien que l'exemple décrit ci-dessus se rapporte au cas d'une surprise associée au limaçon des minutes, il faut rappeler qu'un dispositif isolateur de surprise selon l'invention peut aussi bien coopérer avec une surprise associée à un autre limaçon, notamment un limaçon des quarts par exemple.Although the example described above relates to the case of a surprise associated with the minute snail, it should be remembered that a surprise isolating device according to the invention can also cooperate with a surprise associated with another snail, including a snail of quarters for example.

L'invention est utilisable dans toute pièce d'horlogerie pourvue d'une sonnerie, notamment une montre à répétition minutes ou à grande sonnerie.The invention can be used in any timepiece provided with a bell, in particular a minute repeater or grand strike watch.

Claims (10)

  1. Surprise mechanism (1) for a striking timepiece comprising:
    - a surprise-piece (5) mounted coaxially to a first snail (3) and to a second snail (4),
    - an hour rack (2) connected to a striking control and arranged to pivot from a rest position when said control is actuated,
    - a surprise jumper (8) arranged to press against the surprise-piece (5) under the effect of a spring (6) to cause the surprise-piece (5) to pivot relative to the first snail (3),
    - a surprise-piece isolating device arranged to keep the surprise jumper (8) away from the surprise-piece (5) when the hour rack (2) is in the rest position,
    the surprise-piece isolating device comprising a locking member arranged to cooperate with the hour rack (2) to keep the surprise jumper (8) separate when the hour rack (2) is in the rest position thereof,
    characterised in that said surprise-piece isolating device is made in one piece with said surprise jumper.
  2. Surprise mechanism (1) according to claim 1, wherein said locking member comprises a cam (80) integral with said surprise jumper (8).
  3. Surprise mechanism (1) according to claim 2, wherein the hour rack (2) comprises a machined shaping (20) arranged to cooperate with said cam (80).
  4. Surprise mechanism (1) according to any of claims 1 to 3, wherein the jumper (8) comprises a cam (81) arranged to cooperate with said spring (6).
  5. Surprise mechanism (1) according to claim 4, wherein the cam (81), arranged to cooperate with said spring (6), is integral with the jumper (8) and comprises a guide surface (82) arranged to cooperate with the spring (6).
  6. Surprise mechanism (1) according to any of claims 1 to 5, wherein the first snail (3) is a minute snail.
  7. Surprise mechanism (1) according to any of claims 1 to 5, wherein the second snail (4) is a quarter snail.
  8. Surprise mechanism (1) according to one of claims 1 to 7, wherein the surprise-piece (5) comprises four branches, and a spring (50) arranged inside one of the branches to cooperate with the first snail (3) to maintain the surprise-piece (5) in the rest position thereof.
  9. Surprise mechanism (1) according to one of claims 1 to 8, wherein the surprise jumper (8) comprises a cringle (84) for limiting the travel of the surprise jumper (8) in the low position.
  10. Timepiece comprising a surprise mechanism according to any of the preceding claims.
EP17209992.1A 2017-12-22 2017-12-22 Surprise mechanism Active EP3502793B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17209992.1A EP3502793B1 (en) 2017-12-22 2017-12-22 Surprise mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17209992.1A EP3502793B1 (en) 2017-12-22 2017-12-22 Surprise mechanism

Publications (2)

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EP3502793A1 EP3502793A1 (en) 2019-06-26
EP3502793B1 true EP3502793B1 (en) 2020-11-18

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Application Number Title Priority Date Filing Date
EP17209992.1A Active EP3502793B1 (en) 2017-12-22 2017-12-22 Surprise mechanism

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3845975B1 (en) 2019-12-31 2024-03-13 Omega SA Safety device and ringing mechanism

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60235090D1 (en) * 2002-11-04 2010-03-04 Montres Breguet Sa Watch with striking mechanism with raid isolator
EP1959318A1 (en) 2007-02-13 2008-08-20 Zenith International SA Surprise mechanism for clock movement chimes
CH709069B1 (en) * 2013-12-24 2017-10-13 Patek Philippe Sa Geneve Timepiece comprising a striking mechanism relating to an adjustable time zone mechanism.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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