EP3612896B1 - Locking device for a timepiece mechanism - Google Patents

Locking device for a timepiece mechanism Download PDF

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Publication number
EP3612896B1
EP3612896B1 EP18719312.3A EP18719312A EP3612896B1 EP 3612896 B1 EP3612896 B1 EP 3612896B1 EP 18719312 A EP18719312 A EP 18719312A EP 3612896 B1 EP3612896 B1 EP 3612896B1
Authority
EP
European Patent Office
Prior art keywords
blocking
movable part
blocking device
rotary
movable
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
EP18719312.3A
Other languages
German (de)
French (fr)
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EP3612896A1 (en
Inventor
James Hide
Stéphane OES
Frédéric Maier
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.)
Patek Philippe SA Geneve
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Patek Philippe SA Geneve
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Publication date
Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Publication of EP3612896A1 publication Critical patent/EP3612896A1/en
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Publication of EP3612896B1 publication Critical patent/EP3612896B1/en
Active legal-status Critical Current
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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/24306—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator combination of different shapes, e.g. bands and discs, discs and drums
    • G04B19/2432—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/2434—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released by their own energy source which is released at regular time intervals
    • 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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/12—Driving mechanisms with mainspring with several mainsprings
    • 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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/22—Compensation of changes in the motive power of the mainspring
    • 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
    • G04B15/00—Escapements
    • G04B15/10—Escapements with constant impulses for the regulating mechanism
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/26—Clocks or watches with indicators for tides, for the phases of the moon, or the like
    • G04B19/268—Clocks or watches with indicators for tides, for the phases of the moon, or the like with indicators for the phases of the moon

Definitions

  • the present invention relates to a locking device for a timepiece, capable of locking a rotating member under tension and unlocking it at determined instants to control movements by jumps of one or more moving parts.
  • blocking devices can take various forms.
  • the document EP2831677 describes, in an escape mechanism, a locking device where a first part is in the form of a frame with a closed internal contour with a driving member for driving said frame in movement.
  • the document EP 1658531 describes, in the context of a display mechanism, a locking device comprising levers and a cam. This device is quite complicated and produces a lot of friction. In addition, it is not very robust against shocks, which can lead to display maladjustments.
  • Blocking devices are also known which are in the form of an anchor.
  • This type of locking device is used in particular in constant force devices, also called equality winders, such as the Gafner equality watch winder or that described in the document EP 2166419 .
  • the anchor includes a fork which is in permanent contact with a drive cam, as well as paddles which cooperate with a stop wheel. This type of locking device is robust against shocks but necessarily generates a lot of friction.
  • the present invention aims to remedy, at least in part, these drawbacks and to this end proposes a locking device according to claim 1.
  • the present invention also proposes a clock mechanism comprising such a locking device, and more particularly a clock mechanism according to claim 17 or claim 18.
  • a horological mechanism 1 for a timepiece such as a wristwatch or a pocket watch, comprises a first source of energy 2, a first gear 3 and a regulating member 4.
  • the first source of energy. energy 2 is in the form of a barrel housing a mainspring and the regulator 4 comprises a sprung balance and an escapement.
  • the first energy source 2 can be wound by the user by means of a manual winding mechanism and / or by an automatic winding mechanism (with oscillating weight).
  • the first gear 3 is a finishing gear comprising successively, in the example illustrated, a large average mobile 3a, an average mobile 3b, an hour wheel 3c carrying an hour indicator hand 3d, a return wheel 3rd and a second mobile 3f.
  • the medium-sized mobile 3a meshes with the barrel 2 while the second mobile 3f meshes with an escape pinion 4a of the regulating member 4.
  • the watch mechanism 1 further comprises a second energy source 5 and a second gear 6.
  • the second energy source 5 is typically in the form of a barrel housing a mainspring.
  • the first and second energy sources 2, 5 are independent in the sense that neither of them supplies energy to the other.
  • the second gear train 6 comprises a date wheel 6a which meshes with the barrel 5 and a reduction gear 6b which meshes with the date wheel 6a.
  • the date wheel 6a carries a date indicator hand 6c directed towards a calendar graduation 7 carried by a dial of the watch mechanism 1.
  • the indicator hand 6c could be replaced by one or more indicator discs cooperating with a or counters on the dial.
  • the watch mechanism 1 also comprises a locking device 8 according to the invention for locking and unlocking the second gear 6 under the control of the first gear 3.
  • This locking device 8 comprises (cf. figures 1 and 2 ) a movable frame 8a guided in translation along the double arrow F by a flexible guide device 8b.
  • the flexible guide device 8b is known per se. It is composed of a set of rigid parts and of elastic parts fixed by two 8c of its rigid parts to the frame of the watch mechanism 1 and joined to the movable frame 8a.
  • the flexible guide device 8b forms with the movable frame 8a a monolithic part.
  • the flexible guide device 8b as shown is designed to eliminate parasitic translational and rotational movements so that the movable frame 8a moves in pure translation.
  • the present invention does not however exclude the use of a simpler flexible guiding device, allowing for example a slight rotational displacement in addition to the translational displacement.
  • the movable frame 8a has two openings 8d, 8e, the respective contours of which are closed.
  • the first opening 8d receives a drive member 8f in the form of a coaxial finger and integral with a wheel 9 which meshes by means of a reduction gear 10 with the first gear 3.
  • the second opening 8th receives a blocking member 8g in the form of a coaxial finger and integral with a pinion 11 which meshes with the reduction gear 6b of the second gear 6.
  • Two diametrically opposed recesses 8h of the wall of the first opening 8d constitute drive elements.
  • Two diametrically opposed recesses 8i of the wall of the second opening 8e constitute stop elements.
  • the blocking member 8g which is under tension by the torque exerted by the second energy source 5, remains in abutment against one of the stop elements 8i, which maintains the second source of energy 5, the second gear 6 and the date indicator hand 6c stationary.
  • the drive member 8f is driven continuously by the first gear 3 in the clockwise direction of the figures 1 and 2 at the rate of one turn every 48 hours.
  • the drive member 8f comes into contact with one of the drive elements 8h and then cooperates with it tangentially (in the manner of a gear) to move the movable frame 8a in translation for a period of time. time interval, for example one to two hours, overlapping midnight. At midnight, the movement of the movable frame 8a releases the locking member 8g which loses contact with the stop element 8i on which it was based. The second energy source 5 is then no longer retained and the assembly 5, 6, 8g, 11 begins to rotate until the locking member 8g abuts against the other stop element 8i and again blocking the second energy source 5 and the second gear train 6, a position in which the date indicator hand 6c indicates the next date.
  • the drive member 8f then leaves the drive element 8h with which it cooperated and continues its rotation without driving or touching the movable frame 8a, the latter being immobilized by a slight pull exerted.
  • the locking member 8g on the stop element 8i against which it rests - the stop elements 8i are for this purpose slightly inclined - this pulling compensating for the elastic return force exerted by the flexible guide device 8b on the movable frame 8a and capable of causing the wall of the second opening 8e to abut against the locking member 8g as visible at figure 2 .
  • the drive member 8f comes into contact with the other drive element 8h to move the movable frame 8a in translation in the other direction during a time interval overlapping midnight.
  • the movement of the movable frame 8a releases the assembly 5, 6, 8g, 11 which begins to rotate, making a jump with the date indicator hand 6c, until the locking member 8g comes back to abut against the first stop element 8i.
  • the drive member 8f then leaves the drive element 8h with which it was in contact and continues its rotation without driving or touching the movable frame 8a which is immobilized by the pull exerted by the locking member 8g. Then the cycle repeats.
  • the date display is thus instantaneous and the energy which feeds it is supplied exclusively by the second energy source 5, allowing the first energy source 2 - first gear 3 - regulator 4 assembly to retain its function. running time and not to be disturbed by the date display.
  • the friction is low since in normal operation the drive member 8f is in contact with the wall of the first opening 8d only when it cooperates with the drive elements 8h, or, cumulatively, on less 60%, or even less than 50%, or even less than 40%, or even less than 30%, or even less than 20% of a revolution of the drive member 8f.
  • the contact between the drive member 8f and the drive elements 8h occurs only over about 16% (about 8% per drive element 8h) of a revolution of the drive member 8f .
  • the position of the indicator hand 6c is secured by the support of the locking member 8g on one of the elements of stop 8i.
  • the second energy source 5 can have its own winding mechanism. Being requested only once a day, the second energy source 5 may also not have a winding mechanism and be reset only during regular maintenance of the watch.
  • the wall of the first opening 8d comprises two opposite circular arc parts 8j of the same radius but of different centers, the two junctions between these two parts 8j forming the drive elements 8h.
  • the radius of the two circular arc parts 8j is slightly greater than the radius of the circle traversed by the end of the drive member 8f.
  • Each circular arc portion 8j when the drive member 8f moves opposite it, has its center which coincides with the center of rotation of the drive member 8f. In this way, during its rotation between the two drive elements 8h, the end of the drive member 8f follows the wall of the first opening 8d, thus protecting the locking device 8 against impacts.
  • the drive 8f and 8g locking members can each have several fingers or teeth.
  • the figure 3 shows a variant of the invention in which the locking member 8g is in the form of a star with three teeth.
  • the drive member 8f may be a relatively wide finger and its end 8k may be in an arc of a circle centered on the center of rotation of the drive member 8f and of radius slightly less than the radius of the arcuate parts of circle 8j of the wall of the first opening 8d.
  • the wall of the first opening 8d immediately abuts against the driving member 8f, thus preventing the release of the locking member 8g.
  • the locking device 8 may include tension springs 8m (shown schematically) arranged to fully or partially compensate for the return force exerted by the flexible guide device 8b.
  • the movable frame 8a is then subjected to a zero or weaker restoring force during its translational movements.
  • the movable frame 8a could be mounted to slide.
  • the application of a pulling force to the movable frame 8a is advantageous in order to minimize friction.
  • the invention does not however exclude the possibility of making the locking device 8 operate without a pulling force, in particular in cases where no elastic return force is exerted on the movable frame 8a.
  • the figure 4 shows another variant of the invention, in which the movable frame 8a is rotatably mounted about an axis 8n separate from the axes of rotation 8p, 8q of the drive members 8f and locking members 8g.
  • the drive 8f and blocking 8g are here in the form of stars but they could also be simple fingers.
  • the stop elements 8i defined by the wall of the second opening 8e are arcs of a circle centered on the geometric axis of rotation of the movable frame 8a, so that the support force exerted by the blocking member 8g on the movable frame 8a is located on a straight line intersecting said geometric axis of rotation. In this way, the support of the locking member 8g on the movable frame 8a does not cause displacement of the latter.
  • the stop elements 8i can be tilted so that the locking member 8g exerts on the movable frame 8a a pull which immobilizes the movable frame 8a by compensating for a possible elastic return torque applied to the movable frame 8a and / or by causing the wall of the second opening 8e to abut against the locking member 8g, as illustrated in figures 5 and 6 for the two stop elements 8i.
  • the wall 8r of the first opening 8d which receives the drive member 8f, comprises two projections constituting the drive elements 8h and, according to the invention, is shaped to follow substantially 360 ° the trajectory of the top of the finger or a tooth of the drive member 8f in a mark linked to the movable frame 8a during the rotation of the drive member 8f.
  • This shape of the wall 8r of the first opening 8d allows the movable frame 8a to immediately abut against the drive member 8f in the event of an impact in any direction and thus secure the blocking of the locking member 8g .
  • the wall of the first opening 8d in the exemplary embodiments of figures 1 to 3 , with its arcuate parts 8j, is also shaped to follow substantially 360 ° the trajectory of the top of the finger or of a tooth of the drive member 8f in a reference linked to the movable frame 8a during the rotation of the drive member 8f.
  • the figure 7 shows yet another variant of the invention, in which the movable frame 8a is replaced by two frames 8s, 8t movable relative to the frame of the watch mechanism 1 and movable relative to one another.
  • the first frame 8s comprises the first opening 8d which receives the drive member 8f and the second frame 8t comprises the second opening 8e which receives the locking member 8g.
  • These frames 8s, 8t are for example guided by respective flexible guide devices and are kinematically connected to one another.
  • the frames 8s, 8t are movable in translation and include respective racks 8u, 8v which mesh with a star 8w.
  • the frames 8s, 8t, or only one of them, could be movable in rotation.
  • the mobile frame 8a of the figures 1 to 6 comprises first and second frames or movable parts 8a ', 8a ", these frames or movable parts 8a', 8a" respectively having the first and second openings 8d, 8e and being integral, therefore connected kinematically, and more particularly forming part of the same monolithic part.
  • the openings 8d, 8e could be superimposed.
  • the second opening 8th could be replaced by arms carrying nozzles fulfilling the function of the stop elements 8i.
  • more than two drive elements 8h and / or more than two stop elements 8i could be provided.
  • the wall of the first opening 8d could define additional drive elements to allow a pre-reinforcement of the movable frame 8a or of the part 8a 'before its displacement leading to the release of the locking member 8g.
  • the mechanism 1 can display another quantity or information, such as the moon phase, the week, the day of the week or the month.
  • the mechanism 1 can also be used not to display a quantity or information but to trigger a mechanism such as a ringing mechanism.
  • the figure 8 illustrates another example of application for the locking device 8 according to the invention.
  • the locking device 8 is used in a constant force device of a clockwork mechanism 20.
  • the mechanism 20 comprises an energy source (not shown), typically a barrel, supplied via a finishing gear (not shown) a jumping wheel 21.
  • the jumping wheel 21 is coaxial with a second wheel 22 but is free to rotate with respect to it.
  • An intermediate spring 23 connects the jumping wheel 21 and the second wheel 22.
  • the intermediate spring 23 is for example a spiral spring, one end of which is integral with the jumping wheel 21 and the other end of which is integral with the second wheel 22.
  • the second wheel 22 meshes with the pinion of an escapement wheel set 24 of a regulating member 25.
  • the exhaust wheel set 24 receives its energy from the intermediate spring 23 which itself is periodically armed by the energy source, on each movement of the jumping wheel 21.
  • a substantially constant force which does not depend on the degree of winding of the energy source, is thus delivered to the escapement.
  • the jumping wheel 21 is coaxial and integral with the blocking member 8g of the blocking device 8 and the exhaust mobile 24 is coaxial and integral with the drive member 8f of the locking device 8.
  • the rotation of the exhaust mobile 24 causes the drive member 8f to rotate, always in the same direction, which, by cooperating with the drive elements 8h, periodically releases the locking member 8g and, with him, the jumping wheel 21, the finishing gear and the energy source, which each time instantly arms the intermediate spring 23.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Electromechanical Clocks (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Lock And Its Accessories (AREA)
  • Transmission Devices (AREA)

Description

La présente invention concerne un dispositif de blocage pour une pièce d'horlogerie, capable de bloquer un organe rotatif sous tension et de le débloquer à des instants déterminés pour commander des déplacements par sauts d'un ou plusieurs mobiles.The present invention relates to a locking device for a timepiece, capable of locking a rotating member under tension and unlocking it at determined instants to control movements by jumps of one or more moving parts.

Dans l'horlogerie, les dispositifs de blocage peuvent avoir diverses formes. Le document EP2831677 décrit, dans un mécanisme d'échappement, un dispositif de blocage où une première partie se présente sous la forme d'un cadre à contour interne fermé avec un organe d'entraînement pour entraîner ledit cadre en déplacement.In watchmaking, blocking devices can take various forms. The document EP2831677 describes, in an escape mechanism, a locking device where a first part is in the form of a frame with a closed internal contour with a driving member for driving said frame in movement.

Le document EP 1658531 , par exemple, décrit, dans le cadre d'un mécanisme d'affichage, un dispositif de blocage comprenant des leviers et une came. Ce dispositif est assez compliqué et produit beaucoup de frottements. De plus, il est peu robuste contre les chocs, ce qui peut conduire à des déréglages de l'affichage.The document EP 1658531 , for example, describes, in the context of a display mechanism, a locking device comprising levers and a cam. This device is quite complicated and produces a lot of friction. In addition, it is not very robust against shocks, which can lead to display maladjustments.

On connaît aussi des dispositifs de blocage qui se présentent sous la forme d'une ancre. Ce type de dispositif de blocage est utilisé notamment dans les dispositifs à force constante, appelés également remontoirs d'égalité, tels que le remontoir d'égalité de Gafner ou celui décrit dans le document EP 2166419 . L'ancre comprend une fourchette qui est en contact permanent avec une came d'entraînement, ainsi que des palettes qui coopèrent avec une roue d'arrêt. Ce type de dispositif de blocage est robuste contre les chocs mais génère nécessairement beaucoup de frottements.Blocking devices are also known which are in the form of an anchor. This type of locking device is used in particular in constant force devices, also called equality winders, such as the Gafner equality watch winder or that described in the document EP 2166419 . The anchor includes a fork which is in permanent contact with a drive cam, as well as paddles which cooperate with a stop wheel. This type of locking device is robust against shocks but necessarily generates a lot of friction.

La présente invention vise à remédier, en partie au moins, à ces inconvénients et propose à cette fin un dispositif de blocage selon la revendication 1.The present invention aims to remedy, at least in part, these drawbacks and to this end proposes a locking device according to claim 1.

La présente invention propose aussi un mécanisme horloger comprenant un tel dispositif de blocage, et plus particulièrement un mécanisme horloger selon la revendication 17 ou la revendication 18.The present invention also proposes a clock mechanism comprising such a locking device, and more particularly a clock mechanism according to claim 17 or claim 18.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée suivante faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue de dessus d'un premier exemple de mécanisme horloger comprenant un dispositif de blocage selon l'invention ;
  • la figure 2 montre le dispositif de blocage selon l'invention ; par souci de simplification un dispositif de guidage flexible faisant partie du dispositif de blocage est représenté sur cette figure 2, comme sur les figures 3, 7 et 8 commentées ci-dessous, dans un état de repos alors qu'il est en pratique déformé ;
  • la figure 3 montre un dispositif de blocage selon une variante de l'invention ;
  • la figure 4 montre un dispositif de blocage selon une autre variante de l'invention ;
  • les figures 5 et 6 montrent un dispositif de blocage selon encore une autre variante de l'invention, dans deux positions de blocage différentes ;
  • la figure 7 montre un dispositif de blocage selon encore une autre variante de l'invention ;
  • la figure 8 montre un deuxième exemple de mécanisme horloger comprenant le dispositif de blocage selon l'invention.
Other characteristics and advantages of the present invention will become apparent on reading the following detailed description given with reference to the appended drawings in which:
  • the figure 1 is a top view of a first example of a horological mechanism comprising a locking device according to the invention;
  • the figure 2 shows the locking device according to the invention; for the sake of simplicity, a flexible guide device forming part of the locking device is shown in this figure 2 , as on figures 3 , 7 and 8 commented on below, in a state of rest whereas it is in practice deformed;
  • the figure 3 shows a locking device according to a variant of the invention;
  • the figure 4 shows a locking device according to another variant of the invention;
  • the figures 5 and 6 show a locking device according to yet another variant of the invention, in two different locking positions;
  • the figure 7 shows a locking device according to yet another variant of the invention;
  • the figure 8 shows a second example of a watch mechanism comprising the locking device according to the invention.

En référence à la figure 1, un mécanisme horloger 1 pour une pièce d'horlogerie telle qu'une montre-bracelet ou une montre de poche, comprend une première source d'énergie 2, un premier rouage 3 et un organe régulateur 4. Typiquement, la première source d'énergie 2 est sous la forme d'un barillet logeant un ressort moteur et l'organe régulateur 4 comprend un balancier-spiral et un échappement. De manière classique, la première source d'énergie 2 peut être remontée par l'utilisateur au moyen d'un mécanisme de remontage manuel et/ou par un mécanisme de remontage automatique (à masse oscillante). Le premier rouage 3 est un rouage de finissage comprenant successivement, dans l'exemple illustré, un mobile de grande moyenne 3a, un mobile de moyenne 3b, une roue des heures 3c portant une aiguille indicatrice des heures 3d, une roue de renvoi 3e et un mobile de seconde 3f. Le mobile de grande moyenne 3a engrène avec le barillet 2 tandis que le mobile de seconde 3f engrène avec un pignon d'échappement 4a de l'organe régulateur 4.With reference to the figure 1 , a horological mechanism 1 for a timepiece such as a wristwatch or a pocket watch, comprises a first source of energy 2, a first gear 3 and a regulating member 4. Typically, the first source of energy. energy 2 is in the form of a barrel housing a mainspring and the regulator 4 comprises a sprung balance and an escapement. Conventionally, the first energy source 2 can be wound by the user by means of a manual winding mechanism and / or by an automatic winding mechanism (with oscillating weight). The first gear 3 is a finishing gear comprising successively, in the example illustrated, a large average mobile 3a, an average mobile 3b, an hour wheel 3c carrying an hour indicator hand 3d, a return wheel 3rd and a second mobile 3f. The medium-sized mobile 3a meshes with the barrel 2 while the second mobile 3f meshes with an escape pinion 4a of the regulating member 4.

Le mécanisme horloger 1 comprend en outre une deuxième source d'énergie 5 et un deuxième rouage 6. Comme la première source d'énergie 2, la deuxième source d'énergie 5 est typiquement sous la forme d'un barillet logeant un ressort moteur. Les première et deuxième sources d'énergie 2, 5 sont indépendantes en ce sens qu'aucune d'entre elles ne fournit de l'énergie à l'autre. Dans l'exemple illustré le deuxième rouage 6 comprend une roue de quantième 6a qui engrène avec le barillet 5 et un mobile démultiplicateur 6b qui engrène avec la roue de quantième 6a. La roue de quantième 6a porte une aiguille indicatrice de quantième 6c dirigée vers une graduation des quantièmes 7 que porte un cadran du mécanisme horloger 1. En variante, toutefois, l'aiguille indicatrice 6c pourrait être remplacée par un ou plusieurs disques indicateurs coopérant avec un ou des guichets du cadran.The watch mechanism 1 further comprises a second energy source 5 and a second gear 6. Like the first energy source 2, the second energy source 5 is typically in the form of a barrel housing a mainspring. The first and second energy sources 2, 5 are independent in the sense that neither of them supplies energy to the other. In the example illustrated, the second gear train 6 comprises a date wheel 6a which meshes with the barrel 5 and a reduction gear 6b which meshes with the date wheel 6a. The date wheel 6a carries a date indicator hand 6c directed towards a calendar graduation 7 carried by a dial of the watch mechanism 1. As a variant, however, the indicator hand 6c could be replaced by one or more indicator discs cooperating with a or counters on the dial.

Le mécanisme horloger 1 comprend aussi un dispositif de blocage 8 selon l'invention pour bloquer et débloquer le deuxième rouage 6 sous la commande du premier rouage 3. Ce dispositif de blocage 8 comprend (cf. figures 1 et 2) un cadre mobile 8a guidé en translation suivant la double flèche F par un dispositif de guidage flexible 8b. Le dispositif de guidage flexible 8b est connu en soi. Il est composé d'un ensemble de parties rigides et de parties élastiques fixé par deux 8c de ses parties rigides au bâti du mécanisme horloger 1 et joint au cadre mobile 8a. De préférence, le dispositif de guidage flexible 8b forme avec le cadre mobile 8a une pièce monolithique. Le dispositif de guidage flexible 8b tel que représenté est conçu pour éliminer les mouvements parasites de translation et de rotation de sorte que le cadre mobile 8a se déplace en translation pure. La présente invention n'exclut toutefois pas l'utilisation d'un dispositif de guidage flexible plus simple, autorisant par exemple un léger déplacement en rotation en plus du déplacement en translation.The watch mechanism 1 also comprises a locking device 8 according to the invention for locking and unlocking the second gear 6 under the control of the first gear 3. This locking device 8 comprises (cf. figures 1 and 2 ) a movable frame 8a guided in translation along the double arrow F by a flexible guide device 8b. The flexible guide device 8b is known per se. It is composed of a set of rigid parts and of elastic parts fixed by two 8c of its rigid parts to the frame of the watch mechanism 1 and joined to the movable frame 8a. Preferably, the flexible guide device 8b forms with the movable frame 8a a monolithic part. The flexible guide device 8b as shown is designed to eliminate parasitic translational and rotational movements so that the movable frame 8a moves in pure translation. The present invention does not however exclude the use of a simpler flexible guiding device, allowing for example a slight rotational displacement in addition to the translational displacement.

Le cadre mobile 8a présente deux ouvertures 8d, 8e dont les contours respectifs sont fermés. La première ouverture 8d reçoit un organe d'entraînement 8f se présentant sous la forme d'un doigt coaxial et solidaire d'une roue 9 qui engrène par l'intermédiaire d'un mobile démultiplicateur 10 avec le premier rouage 3. La deuxième ouverture 8e reçoit un organe de blocage 8g se présentant sous la forme d'un doigt coaxial et solidaire d'un pignon 11 qui engrène avec le mobile démultiplicateur 6b du deuxième rouage 6.The movable frame 8a has two openings 8d, 8e, the respective contours of which are closed. The first opening 8d receives a drive member 8f in the form of a coaxial finger and integral with a wheel 9 which meshes by means of a reduction gear 10 with the first gear 3. The second opening 8th receives a blocking member 8g in the form of a coaxial finger and integral with a pinion 11 which meshes with the reduction gear 6b of the second gear 6.

Deux décrochements 8h diamétralement opposés de la paroi de la première ouverture 8d constituent des éléments d'entraînement. Deux décrochements 8i diamétralement opposés de la paroi de la deuxième ouverture 8e constituent des éléments d'arrêt. Sauf à minuit, l'organe de blocage 8g, qui est sous tension de par le couple exercé par la deuxième source d'énergie 5, reste en appui contre l'un des éléments d'arrêt 8i, ce qui maintient la deuxième source d'énergie 5, le deuxième rouage 6 et l'aiguille indicatrice de quantième 6c immobiles. L'organe d'entraînement 8f est entraîné continûment par le premier rouage 3 dans le sens horaire des figures 1 et 2 à raison d'un tour toutes les 48 heures. Une fois par 24 heures, l'organe d'entraînement 8f entre en contact avec l'un des éléments d'entraînement 8h puis coopère avec lui tangentiellement (à la manière d'un engrenage) pour déplacer le cadre mobile 8a en translation pendant un intervalle de temps, par exemple d'une à deux heures, chevauchant minuit. A minuit, le déplacement du cadre mobile 8a libère l'organe de blocage 8g qui perd le contact avec l'élément d'arrêt 8i sur lequel il s'appuyait. La deuxième source d'énergie 5 n'est alors plus retenue et l'ensemble 5, 6, 8g, 11 se met à tourner jusqu'à ce que l'organe de blocage 8g vienne buter contre l'autre élément d'arrêt 8i et bloquer à nouveau la deuxième source d'énergie 5 et le deuxième rouage 6, position dans laquelle l'aiguille indicatrice de quantième 6c indique le quantième suivant. L'organe d'entraînement 8f quitte ensuite l'élément d'entraînement 8h avec lequel il coopérait et continue sa rotation sans entraîner ni toucher le cadre mobile 8a, ce dernier étant immobilisé par un léger tirage exercé par l'organe de blocage 8g sur l'élément d'arrêt 8i contre lequel il s'appuie - les éléments d'arrêt 8i sont à cet effet légèrement inclinés - ce tirage compensant la force élastique de rappel exercée par le dispositif de guidage flexible 8b sur le cadre mobile 8a et pouvant amener la paroi de la deuxième ouverture 8e à buter contre l'organe de blocage 8g comme visible à la figure 2. Puis à l'approche du minuit suivant, l'organe d'entraînement 8f entre en contact avec l'autre élément d'entraînement 8h pour déplacer le cadre mobile 8a en translation dans l'autre sens pendant un intervalle de temps chevauchant minuit. A minuit, le déplacement du cadre mobile 8a libère l'ensemble 5, 6, 8g, 11 qui se met à tourner, faisant effectuer un saut à l'aguille indicatrice de quantième 6c, jusqu'à ce que l'organe de blocage 8g revienne buter contre le premier élément d'arrêt 8i. L'organe d'entraînement 8f quitte ensuite l'élément d'entraînement 8h avec lequel il était en contact et poursuit sa rotation sans entraîner ni toucher le cadre mobile 8a qui est immobilisé par le tirage exercé par l'organe de blocage 8g. Puis le cycle se répète.Two diametrically opposed recesses 8h of the wall of the first opening 8d constitute drive elements. Two diametrically opposed recesses 8i of the wall of the second opening 8e constitute stop elements. Except at midnight, the blocking member 8g, which is under tension by the torque exerted by the second energy source 5, remains in abutment against one of the stop elements 8i, which maintains the second source of energy 5, the second gear 6 and the date indicator hand 6c stationary. The drive member 8f is driven continuously by the first gear 3 in the clockwise direction of the figures 1 and 2 at the rate of one turn every 48 hours. Once per 24 hours, the drive member 8f comes into contact with one of the drive elements 8h and then cooperates with it tangentially (in the manner of a gear) to move the movable frame 8a in translation for a period of time. time interval, for example one to two hours, overlapping midnight. At midnight, the movement of the movable frame 8a releases the locking member 8g which loses contact with the stop element 8i on which it was based. The second energy source 5 is then no longer retained and the assembly 5, 6, 8g, 11 begins to rotate until the locking member 8g abuts against the other stop element 8i and again blocking the second energy source 5 and the second gear train 6, a position in which the date indicator hand 6c indicates the next date. The drive member 8f then leaves the drive element 8h with which it cooperated and continues its rotation without driving or touching the movable frame 8a, the latter being immobilized by a slight pull exerted. by the locking member 8g on the stop element 8i against which it rests - the stop elements 8i are for this purpose slightly inclined - this pulling compensating for the elastic return force exerted by the flexible guide device 8b on the movable frame 8a and capable of causing the wall of the second opening 8e to abut against the locking member 8g as visible at figure 2 . Then as the next midnight approaches, the drive member 8f comes into contact with the other drive element 8h to move the movable frame 8a in translation in the other direction during a time interval overlapping midnight. At midnight, the movement of the movable frame 8a releases the assembly 5, 6, 8g, 11 which begins to rotate, making a jump with the date indicator hand 6c, until the locking member 8g comes back to abut against the first stop element 8i. The drive member 8f then leaves the drive element 8h with which it was in contact and continues its rotation without driving or touching the movable frame 8a which is immobilized by the pull exerted by the locking member 8g. Then the cycle repeats.

L'affichage du quantième est ainsi instantané et l'énergie qui l'alimente est fournie exclusivement par la deuxième source d'énergie 5, permettant à l'ensemble première source d'énergie 2 - premier rouage 3 - organe régulateur 4 de conserver sa durée de marche et de ne pas être perturbé par l'affichage du quantième. De plus les frottements sont faibles puisqu'en fonctionnement normal l'organe d'entraînement 8f est en contact avec la paroi de la première ouverture 8d uniquement lorsqu'il coopère avec les éléments d'entraînement 8h, soit, de manière cumulée, sur moins de 60%, voire moins de 50%, voire moins de 40%, voire moins de 30%, voire moins de 20% d'un tour de rotation de l'organe d'entraînement 8f. Dans l'exemple illustré à la figure 2, le contact entre l'organe d'entraînement 8f et les éléments d'entraînement 8h se produit seulement sur environ 16% (environ 8% par élément d'entraînement 8h) d'un tour de rotation de l'organe d'entraînement 8f. En outre, même en cas de choc ou de mise à l'heure arrêtant le premier rouage 3, la position de l'aiguille indicatrice 6c est sécurisée par l'appui de l'organe de blocage 8g sur l'un des éléments d'arrêt 8i.The date display is thus instantaneous and the energy which feeds it is supplied exclusively by the second energy source 5, allowing the first energy source 2 - first gear 3 - regulator 4 assembly to retain its function. running time and not to be disturbed by the date display. In addition, the friction is low since in normal operation the drive member 8f is in contact with the wall of the first opening 8d only when it cooperates with the drive elements 8h, or, cumulatively, on less 60%, or even less than 50%, or even less than 40%, or even less than 30%, or even less than 20% of a revolution of the drive member 8f. In the example shown in figure 2 , the contact between the drive member 8f and the drive elements 8h occurs only over about 16% (about 8% per drive element 8h) of a revolution of the drive member 8f . In addition, even in the event of an impact or setting the time stopping the first gear 3, the position of the indicator hand 6c is secured by the support of the locking member 8g on one of the elements of stop 8i.

La deuxième source d'énergie 5 peut avoir son propre mécanisme de remontage. Etant sollicitée seulement une fois par jour, la deuxième source d'énergie 5 peut aussi ne pas avoir de mécanisme de remontage et être réarmée seulement lors des entretiens réguliers de la montre.The second energy source 5 can have its own winding mechanism. Being requested only once a day, the second energy source 5 may also not have a winding mechanism and be reset only during regular maintenance of the watch.

La paroi de la première ouverture 8d comprend deux parties en arc de cercle 8j opposées et de même rayon mais de centres différents, les deux jonctions entre ces deux parties 8j formant les éléments d'entraînement 8h. Le rayon des deux parties en arc de cercle 8j est légèrement supérieur au rayon du cercle parcouru par l'extrémité de l'organe d'entraînement 8f. Chaque partie en arc de cercle 8j, lorsque l'organe d'entraînement 8f se déplace en regard d'elle, a son centre qui est confondu avec le centre de rotation de l'organe d'entraînement 8f. De la sorte, lors de sa rotation entre les deux éléments d'entraînement 8h l'extrémité de l'organe d'entraînement 8f suit la paroi de la première ouverture 8d, protégeant ainsi le dispositif de blocage 8 contre les chocs. En effet, en cas de choc reçu par le mécanisme horloger 1 et tendant à déplacer le cadre mobile 8a dans le sens (vers le haut dans la configuration des figures 1 et 2) défavorable au blocage de l'organe de blocage 8g, la paroi de la première ouverture 8d bute immédiatement contre l'extrémité de l'organe d'entraînement 8f, ce qui empêche la libération de l'organe de blocage 8g. La position de l'aiguille indicatrice de quantième 6c est ainsi sécurisée.The wall of the first opening 8d comprises two opposite circular arc parts 8j of the same radius but of different centers, the two junctions between these two parts 8j forming the drive elements 8h. The radius of the two circular arc parts 8j is slightly greater than the radius of the circle traversed by the end of the drive member 8f. Each circular arc portion 8j, when the drive member 8f moves opposite it, has its center which coincides with the center of rotation of the drive member 8f. In this way, during its rotation between the two drive elements 8h, the end of the drive member 8f follows the wall of the first opening 8d, thus protecting the locking device 8 against impacts. In fact, in the event of a shock received by the watch mechanism 1 and tending to move the movable frame 8a in the direction (upwards in the configuration of the figures 1 and 2 ) unfavorable to the blocking of the locking member 8g, the wall of the first opening 8d immediately abuts against the end of the drive member 8f, which prevents the release of the locking member 8g. The position of the date indicator hand 6c is thus secured.

Les organes d'entraînement 8f et de blocage 8g peuvent présenter chacun plusieurs doigts ou dents. A titre d'exemple, la figure 3 montre une variante de l'invention dans laquelle l'organe de blocage 8g est sous la forme d'une étoile à trois dents. De plus, comme montré sur cette figure 3, l'organe d'entraînement 8f peut être un doigt relativement large et son extrémité 8k peut être en arc de cercle centré sur le centre de rotation de l'organe d'entraînement 8f et de rayon légèrement inférieur au rayon des parties en arc de cercle 8j de la paroi de la première ouverture 8d. Lors d'un choc reçu par le mécanisme horloger 1 et tendant à déplacer le cadre mobile 8a dans un sens défavorable au blocage de l'organe de blocage 8g, la paroi de la première ouverture 8d bute immédiatement contre l'organe d'entraînement 8f, empêchant ainsi la libération de l'organe de blocage 8g.The drive 8f and 8g locking members can each have several fingers or teeth. For example, the figure 3 shows a variant of the invention in which the locking member 8g is in the form of a star with three teeth. In addition, as shown on this figure 3 , the drive member 8f may be a relatively wide finger and its end 8k may be in an arc of a circle centered on the center of rotation of the drive member 8f and of radius slightly less than the radius of the arcuate parts of circle 8j of the wall of the first opening 8d. During a shock received by the watch mechanism 1 and tending to move the movable frame 8a in a direction unfavorable to the blocking of the locking member 8g, the wall of the first opening 8d immediately abuts against the driving member 8f, thus preventing the release of the locking member 8g.

Comme représenté également à la figure 3, le dispositif de blocage 8 peut comprendre des ressorts de traction 8m (représentés schématiquement) agencés pour compenser totalement ou partiellement la force de rappel exercée par le dispositif de guidage flexible 8b. Le cadre mobile 8a est alors soumis à une force de rappel nulle ou plus faible pendant ses déplacements en translation.As also shown in figure 3 , the locking device 8 may include tension springs 8m (shown schematically) arranged to fully or partially compensate for the return force exerted by the flexible guide device 8b. The movable frame 8a is then subjected to a zero or weaker restoring force during its translational movements.

Il va de soi qu'en alternative au dispositif de guidage flexible 8b, le cadre mobile 8a pourrait être monté coulissant.It goes without saying that as an alternative to the flexible guide device 8b, the movable frame 8a could be mounted to slide.

Dans les deux derniers cas mentionnés ci-dessus, où aucune force de rappel élastique n'est exercée sur le cadre mobile 8a, la force de tirage appliquée par l'organe de blocage 8g dès son contact avec l'élément d'arrêt 8i déplace le cadre mobile 8a jusqu'à ce que la paroi de la deuxième ouverture 8e bute contre l'organe de blocage 8g, immobilisant ainsi le cadre mobile 8a.In the last two cases mentioned above, where no elastic restoring force is exerted on the movable frame 8a, the pulling force applied by the locking member 8g as soon as it comes into contact with the stop element 8i displaces the movable frame 8a until the wall of the second opening 8th abuts against the locking member 8g, thus immobilizing the movable frame 8a.

Dans tous les cas décrits ci-dessus, l'application d'une force de tirage au cadre mobile 8a est avantageuse pour minimiser les frottements. L'invention n'exclut toutefois pas la possibilité de faire fonctionner le dispositif de blocage 8 sans force de tirage, notamment dans les cas où aucune force de rappel élastique n'est exercée sur le cadre mobile 8a.In all of the cases described above, the application of a pulling force to the movable frame 8a is advantageous in order to minimize friction. The invention does not however exclude the possibility of making the locking device 8 operate without a pulling force, in particular in cases where no elastic return force is exerted on the movable frame 8a.

La figure 4 montre une autre variante de l'invention, dans laquelle le cadre mobile 8a est monté rotatif autour d'un axe 8n distinct des axes de rotation 8p, 8q des organes d'entraînement 8f et de blocage 8g. Les organes d'entraînement 8f et de blocage 8g sont ici sous la forme d'étoiles mais ils pourraient aussi être de simples doigts. Les éléments d'arrêt 8i définis par la paroi de la deuxième ouverture 8e sont des arcs de cercle centrés sur l'axe géométrique de rotation du cadre mobile 8a, de sorte que la force d'appui exercée par l'organe de blocage 8g sur le cadre mobile 8a est située sur une droite coupant ledit axe géométrique de rotation. De cette manière, l'appui de l'organe de blocage 8g sur le cadre mobile 8a n'entraîne pas de déplacement de ce dernier. On peut néanmoins, en variante, incliner les éléments d'arrêt 8i pour que l'organe de blocage 8g exerce sur le cadre mobile 8a un tirage qui immobilise le cadre mobile 8a en compensant un éventuel couple de rappel élastique appliqué au cadre mobile 8a et/ou en faisant buter la paroi de la deuxième ouverture 8e contre l'organe de blocage 8g, comme cela est illustré aux figures 5 et 6 pour les deux éléments d'arrêt 8i.The figure 4 shows another variant of the invention, in which the movable frame 8a is rotatably mounted about an axis 8n separate from the axes of rotation 8p, 8q of the drive members 8f and locking members 8g. The drive 8f and blocking 8g are here in the form of stars but they could also be simple fingers. The stop elements 8i defined by the wall of the second opening 8e are arcs of a circle centered on the geometric axis of rotation of the movable frame 8a, so that the support force exerted by the blocking member 8g on the movable frame 8a is located on a straight line intersecting said geometric axis of rotation. In this way, the support of the locking member 8g on the movable frame 8a does not cause displacement of the latter. However, as a variant, the stop elements 8i can be tilted so that the locking member 8g exerts on the movable frame 8a a pull which immobilizes the movable frame 8a by compensating for a possible elastic return torque applied to the movable frame 8a and / or by causing the wall of the second opening 8e to abut against the locking member 8g, as illustrated in figures 5 and 6 for the two stop elements 8i.

En référence encore aux figures 4 à 6, la paroi 8r de la première ouverture 8d, qui reçoit l'organe d'entraînement 8f, comprend deux saillies constituant les éléments d'entraînement 8h et, selon l'invention, est conformée pour suivre sur sensiblement 360° la trajectoire du sommet du doigt ou d'une dent de l'organe d'entraînement 8f dans un repère lié au cadre mobile 8a lors de la rotation de l'organe d'entraînement 8f. Cette forme de la paroi 8r de la première ouverture 8d permet au cadre mobile 8a de buter immédiatement contre l'organe d'entraînement 8f en cas de choc dans n'importe quelle direction et de sécuriser ainsi le blocage de l'organe de blocage 8g. La paroi de la première ouverture 8d dans les exemples de réalisation des figures 1 à 3, avec ses parties en arc de cercle 8j, est elle aussi conformée pour suivre sur sensiblement 360° la trajectoire du sommet du doigt ou d'une dent de l'organe d'entraînement 8f dans un repère lié au cadre mobile 8a lors de la rotation de l'organe d'entraînement 8f.With further reference to figures 4 to 6 , the wall 8r of the first opening 8d, which receives the drive member 8f, comprises two projections constituting the drive elements 8h and, according to the invention, is shaped to follow substantially 360 ° the trajectory of the top of the finger or a tooth of the drive member 8f in a mark linked to the movable frame 8a during the rotation of the drive member 8f. This shape of the wall 8r of the first opening 8d allows the movable frame 8a to immediately abut against the drive member 8f in the event of an impact in any direction and thus secure the blocking of the locking member 8g . The wall of the first opening 8d in the exemplary embodiments of figures 1 to 3 , with its arcuate parts 8j, is also shaped to follow substantially 360 ° the trajectory of the top of the finger or of a tooth of the drive member 8f in a reference linked to the movable frame 8a during the rotation of the drive member 8f.

La figure 7 montre encore une autre variante de l'invention, dans laquelle le cadre mobile 8a est remplacé par deux cadres 8s, 8t mobiles par rapport au bâti du mécanisme horloger 1 et mobiles l'un par rapport à l'autre. Le premier cadre 8s comprend la première ouverture 8d qui reçoit l'organe d'entraînement 8f et le deuxième cadre 8t comprend la deuxième ouverture 8e qui reçoit l'organe de blocage 8g. Ces cadres 8s, 8t sont par exemple guidés par des dispositifs de guidage flexible respectifs et sont reliés cinématiquement l'un à l'autre. Dans l'exemple représenté les cadres 8s, 8t sont mobiles en translation et comprennent des crémaillères respectives 8u, 8v qui engrènent avec une étoile 8w. Dans des variantes, les cadres 8s, 8t, ou seulement l'un d'entre eux, pourraient être mobiles en rotation.The figure 7 shows yet another variant of the invention, in which the movable frame 8a is replaced by two frames 8s, 8t movable relative to the frame of the watch mechanism 1 and movable relative to one another. The first frame 8s comprises the first opening 8d which receives the drive member 8f and the second frame 8t comprises the second opening 8e which receives the locking member 8g. These frames 8s, 8t are for example guided by respective flexible guide devices and are kinematically connected to one another. In the example shown, the frames 8s, 8t are movable in translation and include respective racks 8u, 8v which mesh with a star 8w. In variants, the frames 8s, 8t, or only one of them, could be movable in rotation.

Par analogie avec l'exemple de réalisation de la figure 7, on peut considérer que le cadre mobile 8a des figures 1 à 6 comprend des premier et deuxième cadres ou parties mobiles 8a', 8a", ces cadres ou parties mobiles 8a', 8a" présentant respectivement les première et deuxième ouvertures 8d, 8e et étant solidaires, donc reliés cinématiquement, et plus particulièrement faisant partie d'une même pièce monolithique.By analogy with the example of realization of the figure 7 , we can consider that the mobile frame 8a of the figures 1 to 6 comprises first and second frames or movable parts 8a ', 8a ", these frames or movable parts 8a', 8a" respectively having the first and second openings 8d, 8e and being integral, therefore connected kinematically, and more particularly forming part of the same monolithic part.

De nombreuses autres configurations que celles représentées aux figures et décrites ci-dessus sont possibles dans la présente invention. Par exemple, au lieu d'être coplanaires, les ouvertures 8d, 8e pourraient être superposées. La deuxième ouverture 8e pourrait être remplacée par des bras portant des becs remplissant la fonction des éléments d'arrêt 8i. Par ailleurs, plus de deux éléments d'entraînement 8h et/ou plus de deux éléments d'arrêt 8i pourraient être prévus. Par exemple, la paroi de la première ouverture 8d pourrait définir des éléments d'entraînement supplémentaires pour permettre un pré-armage du cadre mobile 8a ou de la partie 8a' avant son déplacement conduisant à la libération de l'organe de blocage 8g.Many other configurations than those shown in the figures and described above are possible in the present invention. For example, instead of being coplanar, the openings 8d, 8e could be superimposed. The second opening 8th could be replaced by arms carrying nozzles fulfilling the function of the stop elements 8i. Furthermore, more than two drive elements 8h and / or more than two stop elements 8i could be provided. For example, the wall of the first opening 8d could define additional drive elements to allow a pre-reinforcement of the movable frame 8a or of the part 8a 'before its displacement leading to the release of the locking member 8g.

Il va de soi pour l'homme du métier qu'à la place du quantième on pourrait avec le mécanisme 1 afficher une autre grandeur ou information, telle que la phase de lune, la semaine, le jour de la semaine ou le mois. Le mécanisme 1 peut aussi être utilisé non pas pour afficher une grandeur ou information mais pour déclencher un mécanisme tel qu'un mécanisme de sonnerie.It goes without saying for those skilled in the art that instead of the date, it is possible, with the mechanism 1, to display another quantity or information, such as the moon phase, the week, the day of the week or the month. The mechanism 1 can also be used not to display a quantity or information but to trigger a mechanism such as a ringing mechanism.

La figure 8 illustre un autre exemple d'application pour le dispositif de blocage 8 selon l'invention. Dans cet autre exemple, le dispositif de blocage 8 est utilisé dans un dispositif à force constante d'un mécanisme horloger 20. Le mécanisme 20 comprend une source d'énergie (non représentée), typiquement un barillet, alimentant via un rouage de finissage (non représenté) une roue sautante 21. La roue sautante 21 est coaxiale avec une roue de seconde 22 mais est libre en rotation par rapport à celle-ci. Un ressort intermédiaire 23 relie la roue sautante 21 et la roue de seconde 22. Le ressort intermédiaire 23 est par exemple un ressort-spiral dont l'une des extrémités est solidaire de la roue sautante 21 et dont l'autre extrémité est solidaire de la roue de seconde 22. La roue de seconde 22 engrène avec le pignon d'un mobile d'échappement 24 d'un organe régulateur 25. Le mobile d'échappement 24 reçoit son énergie du ressort intermédiaire 23 qui lui-même est armé périodiquement par la source d'énergie, à chaque déplacement de la roue sautante 21. Une force sensiblement constante, qui ne dépend pas du degré d'armage de la source d'énergie, est ainsi délivrée à l'échappement.The figure 8 illustrates another example of application for the locking device 8 according to the invention. In this other example, the locking device 8 is used in a constant force device of a clockwork mechanism 20. The mechanism 20 comprises an energy source (not shown), typically a barrel, supplied via a finishing gear ( not shown) a jumping wheel 21. The jumping wheel 21 is coaxial with a second wheel 22 but is free to rotate with respect to it. An intermediate spring 23 connects the jumping wheel 21 and the second wheel 22. The intermediate spring 23 is for example a spiral spring, one end of which is integral with the jumping wheel 21 and the other end of which is integral with the second wheel 22. The second wheel 22 meshes with the pinion of an escapement wheel set 24 of a regulating member 25. The exhaust wheel set 24 receives its energy from the intermediate spring 23 which itself is periodically armed by the energy source, on each movement of the jumping wheel 21. A substantially constant force, which does not depend on the degree of winding of the energy source, is thus delivered to the escapement.

Pour l'armage périodique du ressort intermédiaire 23, la roue sautante 21 est coaxiale et solidaire de l'organe de blocage 8g du dispositif de blocage 8 et le mobile d'échappement 24 est coaxial et solidaire de l'organe d'entraînement 8f du dispositif de blocage 8. La rotation du mobile d'échappement 24 fait tourner l'organe d'entraînement 8f, toujours dans le même sens, lequel en coopérant avec les éléments d'entraînement 8h libère périodiquement l'organe de blocage 8g et, avec lui, la roue sautante 21, le rouage de finissage et la source d'énergie, ce qui arme à chaque fois instantanément le ressort intermédiaire 23.For the periodic winding of the intermediate spring 23, the jumping wheel 21 is coaxial and integral with the blocking member 8g of the blocking device 8 and the exhaust mobile 24 is coaxial and integral with the drive member 8f of the locking device 8. The rotation of the exhaust mobile 24 causes the drive member 8f to rotate, always in the same direction, which, by cooperating with the drive elements 8h, periodically releases the locking member 8g and, with him, the jumping wheel 21, the finishing gear and the energy source, which each time instantly arms the intermediate spring 23.

Claims (18)

  1. Blocking device (8) for a timepiece comprising:
    - a first and a second movable part (8a', 8a"; 8s, 8t) kinematically connected to each other, the first movable part (8a'; 8s) comprising a drive device (8h), the second movable part (8a"; 8t) comprising a stop device (8i),
    - a rotary drive member (8f) intended to rotate in a single direction and arranged to cooperate with the drive device (8h) to move the first movable part (8a'; 8s), and thus the second movable part (8a"; 8t), alternately in opposite directions, and
    - a rotary blocking member (8g) intended to be energized and arranged to cooperate with the stop device (8i) to be blocked by the second movable part (8a"; 8t) and released at times determined by said movements of the second movable part (8a"; 8t),
    and in which the first movable part (8a'; 8s) has an opening (8d) with a closed contour receiving the rotary drive member (8f) and the wall of which defines the drive device (8h), the said wall following over substantially 360° the trajectory of an apex of the rotary drive member (8f) in a reference frame linked to the first movable part (8a'; 8s) during the rotation of the rotary drive member (8f) in order to protect the blocking device (8) from shocks.
  2. Blocking device (8) according to claim 1, characterised in that the first and second movable parts (8a', 8a") are rigidly connected with each other.
  3. Blocking device (8) according to claim 2, characterised in that the first and second movable parts (8a', 8a") form or form part of a same monolithic part (8a).
  4. Blocking device (8) according to claim 1, characterised in that the first and second movable parts (8s, 8t) are movable relative to each other.
  5. Blocking device (8) according to any one of claims 1 to 4, characterised in that the stop device (8i) is arranged so that the cooperation between the rotary blocking member (8g) and the stop device (8i) immobilises the second movable part (8a"; 8t) and thus the first movable part (8a'; 8s) when the rotary drive member (8f) does not cooperate with the drive device (8h).
  6. Blocking device (8) according to any one of claims 1 to 5, characterised in that in normal operation the rotary drive member (8f) is in contact with the wall of the opening (8d) of the first movable part (8a'; 8s) only when it cooperates with the drive device (8h), i.e. over less than 60%, preferably less than 50%, preferably less than 40%, preferably less than 30%, preferably less than 20% of a revolution of the rotary drive member (8f).
  7. Blocking device (8) according to any one of claims 1 to 6, characterised in that the wall of the opening (8d) of the first movable part (8a'; 8s) comprises two opposing arcuate portions (8j) of the same radius but of different centres, the junctions between these two arcuate portions (8j) forming the drive device (8h).
  8. Blocking device (8) according to any one of claims 1 to 7, characterised in that the rotary drive member (8f) is in the form of a finger or a star.
  9. Blocking device (8) according to any one of claims 1 to 8, characterised in that the second movable part (8a"; 8t) has an opening (8e) with a closed contour receiving the rotary blocking member (8g) and the wall of which defines the stop device (8i).
  10. Blocking device (8) according to any one of claims 1 to 9, characterised in that the rotary blocking member (8g) is in the form of a finger or a star.
  11. Blocking device (8) according to any one of claims 1 to 10, characterised in that the drive device (8h) comprises first and second drive elements.
  12. Blocking device (8) according to any one of claims 1 to 11, characterised in that the stop device (8i) comprises first and second stop elements.
  13. Blocking device (8) according to any one of claims 1 to 12, characterised in that the first and second movable parts (8a', 8a"; 8s, 8t) are each translatable.
  14. Blocking device (8) according to any one of claims 1 to 12, characterised in that the first and second movable parts (8a', 8a") are each rotatable.
  15. Blocking device (8) according to any one of claims 1 to 14, characterised in that the first and second movable parts (8a', 8a"; 8s, 8t) are guided by one or more flexible guide devices (8b).
  16. Blocking device (8) according to claim 15, characterised in that the flexible guide device(s) (8b) are arranged to allow movement of the first and second movable parts (8a', 8a"; 8s, 8t) only in translation.
  17. Timepiece mechanism (1) comprising a blocking device (8) according to any one of claims 1 to 16, the rotary blocking member (8g) being kinematically connected to an indicator member (6c) and allowing a jumping movement of the indicator member (6c).
  18. Timepiece mechanism (20) comprising a blocking device (8) according to any one of claims 1 to 16, the rotary drive member (8f) being rotationally fixed to an escapement wheel-and-pinion assembly (24), the rotary blocking member (8g) being rotationally fixed to a jumping wheel (21) powered by a power source and connected by a spring (23) to a seconds wheel (22) which meshes with the escapement wheel-and-pinion assembly (24), the spring (23) thus powering the escapement wheel-and-pinion assembly (24) via the seconds wheel (22) and being cocked by the power source each time the rotary blocking member (8g) is released.
EP18719312.3A 2017-04-18 2018-04-17 Locking device for a timepiece mechanism Active EP3612896B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17166832 2017-04-18
PCT/IB2018/052645 WO2018193365A1 (en) 2017-04-18 2018-04-17 Locking device for a timepiece

Publications (2)

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EP3612896A1 EP3612896A1 (en) 2020-02-26
EP3612896B1 true EP3612896B1 (en) 2021-07-14

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Application Number Title Priority Date Filing Date
EP18719311.5A Active EP3612898B1 (en) 2017-04-18 2018-04-17 Timepiece mechanism
EP18719312.3A Active EP3612896B1 (en) 2017-04-18 2018-04-17 Locking device for a timepiece mechanism
EP18719313.1A Pending EP3612897A1 (en) 2017-04-18 2018-04-17 Locking device for a timepiece

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EP18719311.5A Active EP3612898B1 (en) 2017-04-18 2018-04-17 Timepiece mechanism

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP18719313.1A Pending EP3612897A1 (en) 2017-04-18 2018-04-17 Locking device for a timepiece

Country Status (6)

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US (2) US20200117143A1 (en)
EP (3) EP3612898B1 (en)
JP (2) JP7096267B2 (en)
CN (2) CN110622073B (en)
TW (3) TW201843544A (en)
WO (3) WO2018193364A1 (en)

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EP4002016A1 (en) * 2020-11-20 2022-05-25 Montres Breguet S.A. Watch with mechanical movement with force control mechanism

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Publication number Publication date
TW201843544A (en) 2018-12-16
EP3612898B1 (en) 2021-03-31
US11675313B2 (en) 2023-06-13
CN110622073B (en) 2021-07-27
TW201842425A (en) 2018-12-01
US20210096513A1 (en) 2021-04-01
CN110622073A (en) 2019-12-27
TW201842424A (en) 2018-12-01
WO2018193364A1 (en) 2018-10-25
US20200117143A1 (en) 2020-04-16
CN110892339A (en) 2020-03-17
CN110892339B (en) 2021-05-25
JP2020517921A (en) 2020-06-18
JP7096267B2 (en) 2022-07-05
EP3612896A1 (en) 2020-02-26
WO2018193366A1 (en) 2018-10-25
WO2018193365A1 (en) 2018-10-25
JP2020517922A (en) 2020-06-18
EP3612897A1 (en) 2020-02-26
EP3612898A1 (en) 2020-02-26

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