EP0129683A1 - Date indicating mechanism for watches - Google Patents

Date indicating mechanism for watches Download PDF

Info

Publication number
EP0129683A1
EP0129683A1 EP84105243A EP84105243A EP0129683A1 EP 0129683 A1 EP0129683 A1 EP 0129683A1 EP 84105243 A EP84105243 A EP 84105243A EP 84105243 A EP84105243 A EP 84105243A EP 0129683 A1 EP0129683 A1 EP 0129683A1
Authority
EP
European Patent Office
Prior art keywords
jumper
mobile
coupling means
toothing
crown
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.)
Withdrawn
Application number
EP84105243A
Other languages
German (de)
French (fr)
Inventor
Michiel Groothuis
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.)
Compagnie des Montres Longines Francillon SA
Original Assignee
Compagnie des Montres Longines Francillon SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie des Montres Longines Francillon SA filed Critical Compagnie des Montres Longines Francillon SA
Publication of EP0129683A1 publication Critical patent/EP0129683A1/en
Withdrawn legal-status Critical Current

Links

Images

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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/021—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement

Definitions

  • the present invention relates to a calendar mechanism for a timepiece, and it relates more particularly to such an improved calendar mechanism so that its operation requires both minimum energy and minimum drive torque.
  • the calendar mechanism of a timepiece is an element that consumes significant energy, and which opposes the drive device of the piece a significant resistant torque.
  • the disc serving as an indicator member has a large diameter and a large inertia, and that for reasons of space, it is not possible to support it in its center by means of bearings with low coefficient of friction. , as is the case for most of the other cogs in a watch movement.
  • the locking of the calendar disc is generally obtained by means of a jumper, solicited by means of a spring, in engagement with a internal toothing of the disc.
  • a torque sufficient to overcome the action of the jumper spring, and to advance the disc by one notch.
  • a spring is gradually armed, for example between 18 and 24 hours, and it is then released all at once at midnight to suddenly advance the disc by releasing the jumper.
  • Swiss patent 591,720 proposes a calendar mechanism comprising a calendar crown driven once a day by a training mobile performing one revolution per 24 hours.
  • a jumper mounted articulated on the frame of the mechanism is controlled by a cam provided on this same mobile to engage for most of the day against an internal toothing of the crown and to retract while the crown has to advance d 'a step.
  • this mechanism has two major disadvantages.
  • the calendar crown is driven by a simple tongue attached to the mobile making one revolution per 24 hours, and which collaborates with the internal toothing, with a substantially triangular profile of the crown.
  • the calendar crown is no longer locked, and it risks moving, either by more than one step, or at less than a significant fraction of steps, which disturbs the reading of the date during the entire training phase of the calendar disc.
  • the mobile which makes one revolution per 24 hours is provided with a second cam, which collaborates with a spout of the jumper to bring it back as quickly as possible to the position of engagement with the calendar crown , after the date change. This measure only reduces the period during which the risk of disregarding the date indication remains and, in addition, the accelerated movement of the jumper in the engagement position increases, even if only slightly, the torque requested from the mobile. drive at this time.
  • the construction of the mechanism of the Swiss patent 591 720 follows directly from the known mechanisms, and it follows in particular that the mode of coupling of the jumper tooth with the internal toothing of the calendar crown is not optimal.
  • the jumper tooth has inclined flanks, as found in conventional mechanisms, in which the action of the teeth of the disc on its flanks, at the time of change of date, must cause a movement of the jumper against the force of the winding spring of this jumper.
  • this jumper can guarantee a correct locking of the calendar apart from the date changes, it must be applied against the internal toothing of the calendar crown with a significant force, corresponding approximately to the force of the winding spring of a classic long necklace.
  • the normal support of the jumper of the device described being in reality provided by the mobile which makes one revolution per 24 hours, provided with its control cam, it follows that the jumper exercises, despite everything, in most of the day, a significant resistant couple on this mobile.
  • the present invention proposes a mechanism of the type of that of the aforementioned patent, but which is further improved for on the one hand completely exclude the risks of untimely displacements of the calendar crown during the date changes, and for simultaneously , during the rest of the day, ensure perfect locking of the crown for lower stress on the engine.
  • FIGS. 1 to 4 schematically represent the calendar mechanism in 4 of its successive positions during a change of date .
  • FIG. 1 there is shown schematically a calendar mechanism comprising an indicator member constituted by a calendar crown 1, a driving mobile 2 performing one revolution per 24 hours, an intermediate mobile 3 which ensures the transmission of the mobile drive 2 to the calendar crown 1, and a jumper 4 articulated on the frame 5 of the mechanism.
  • the coupling means which ensure the drive to the crown 1 are constituted by a finger 6 provided on the periphery of the driving mobile 2, by a first toothing 7 of the intermediate mobile 3, in which comes to engage, once per day, the finger 6, and by the internal toothing 8 of the calendar crown 1, which engages with a second toothing 9 of the intermediate mobile 3.
  • the rocker-jumper 4 comprises a first elastic arm 10, the end of which is formed a tooth 11 which engages with the teeth 7 of the intermediate mobile 3.
  • a second arm 12 of the rocker-jumper 4 has a projection 13 which comes to bear on a cam 14 formed in the gap between the driving mobile 2 and the wheel 21 which entails.
  • the cam 14 has a notch 15 in which the projection 13 engages to allow the jumper lever 4 to pivot in the direction of the arrow 16 when the driving mobile 2 must drive the intermediate mobile 3, the tooth 11 of the arm 10 then emerging from the teeth 7 of the intermediate mobile 3.
  • the second arm 12 of the rocker-jumper 4 has an end spout 17, the spacing of the branch 10 is slightly less than the smallest diameter of the cam 14, so as to maintain the jumper 4 between the mobile 2 and its drive wheel 21, at the level of the cam 14, in a preassembled state of these elements.
  • This arrangement appears more clearly in Figure 5.
  • the coupling means allowing the transmission of the movement of the driving mobile 2 to the calendar crown 1 described above are given by way of example, and one could as well envisage the elimination of the intermediate mobile 3.
  • the latter however has the advantage of being able to wear two teeth 7, 9 one of which is perfectly suited to its collaboration with the jumper tooth, and the other to the drive of the calendar crown.
  • the respective profiles of the finger 6 of the driving mobile 2, and of the toothing 7 of the intermediate mobile 3, as well as those of the toothing 9 of this intermediate mobile 3 and of the toothing 8 of the calendar crown 1 are defined so as to allow engagement of the self-locking type of these different toothing, that is to say that from the moment when two corresponding toothing are engaged one with the other, the leading teeth prohibits any independent rotation in one direction or another of the led teeth which would make it possible to lose the indication of the date.
  • This arrangement makes it possible to guarantee, even when the tooth 11 of the jumper is retracted, that the calendar crown is perfectly locked.
  • the engagement surfaces 20 of the tooth 11 have a stiff front.
  • the force required to rotate the intermediate mobile 3 will have to be greater than in conventional constructions.
  • the bearing force of the tooth 11 against the mobile 3 will be lower, and therefore also the resistive torque applied by the projection 13 on the training mobile 2.
  • the angle of the engagement surfaces 20 could be zero, that is to say targeting the center of the mobile 3. There would then be a blocking lock with zero force.
  • Figure 2 there is shown the mechanism of Figure 1 shortly before the start of a date change.
  • the finger 6 will come into contact with the teeth 7 of the intermediate mobile 3, and the projection 13 of the arm 12 of the rocker-jumper 4 has reached the notch 15 of the cam 14, which will allow the intermediate mobile 3 to release the tooth 11 of the jumper without having to apply any effort to it.
  • FIG 4 there is shown the mechanism at the end of a date change.
  • the projection 13 arrives at the end of the notch 15 of the cam 14, and the jumper rocker has resumed its position in which the tooth 11 engages with the intermediate mobile 3.
  • the calendar crown has thus advanced by 1 step , and it is again locked due to a slight support of the projection 13 on the cylindrical part of the cam 14.
  • the calendar advances by 1 step during an approximate period of two hours.
  • a jumping calendar that is to say in which the driving mobile 2 would not have a continuous rotation, but would be actuated intermittently, during the release of the energy stored for several hours in a winding spring for example.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
  • Electrically Operated Instructional Devices (AREA)

Abstract

The date indicating mechanism comprises a date indicating crown (1), driven by a driving gear (2), which rotates once every 24 hours. The coupling means (6, 3, 7, 9, 8) which ensure transmission of the movement from the driving gear (2) to the date indicating crown (1) are defined so as to ensure a self-locking drive of the date indicating crown while a jumper tooth (11), provided on a lever-jumper (4), is retracted. The movement of the lever-jumper (4) is controlled by a cam (14) of the driving gear (2) which interacts with a projection (13) of the lever-jumper (4). Moreover, the engagement surfaces of the jumper tooth (11) have a steep front so as to limit the necessary bearing of the jumper in order to ensure correct locking of the date indicating crown and thus to minimise the resisting torque imposed by the projection (13) on the bearing surface (14) of the driving gear (2). <IMAGE>

Description

La présente invention concerne un mécanisme de calendrier pour pièce d'horlogerie, et elle se rapporte plus spécialement à un tel mécanisme de calendrier perfectionné de manière que son fonctionnement nécessite à la fois une énergie et un couple d'entraînement minimaux.The present invention relates to a calendar mechanism for a timepiece, and it relates more particularly to such an improved calendar mechanism so that its operation requires both minimum energy and minimum drive torque.

D'une façon générale, le mécanisme de calendrier d'une pièce d'horlogerie est un élément qui consomme une énergie non négligeable, et qui oppose au dispositif d'entraînement de la pièce un couple résistant important. Ceci tient au fait que le disque servant d'organe indicateur présente un grand diamètre et une inertie importante, et que pour des raisons de place, il n'est pas possible de le supporter en son centre au moyen de paliers à faible coefficient de friction, comme c'est le cas pour la plupart des autres rouages d'un mouvement d'horlogerie. En outre, il est nécessaire d'assurer une indexation correcte du calendrier dans chacune de ses positions, pour éviter des sauts inopportuns, par exemple lors de chocs.In general, the calendar mechanism of a timepiece is an element that consumes significant energy, and which opposes the drive device of the piece a significant resistant torque. This is due to the fact that the disc serving as an indicator member has a large diameter and a large inertia, and that for reasons of space, it is not possible to support it in its center by means of bearings with low coefficient of friction. , as is the case for most of the other cogs in a watch movement. In addition, it is necessary to ensure correct indexing of the calendar in each of its positions, to avoid untimely jumps, for example during shocks.

Dans les montres mécaniques, dans lesquelles suffisamment d'énergie peut être stockée chaque jour dans le ressort de barillet, le verrouillage du disque de calendrier est généralement obtenu au moyen d'un sautoir, sollicité au moyen d'un ressort, en engagement avec une denture intérieure du disque. Au moment du changement de date, il suffit d'appliquer au disque de calendrier un couple d'avancement suffisant pour vaincre l'action du ressort de sautoir, et faire avancer le disque d'un cran. Afin de limiter la valeur du couple, dans certains mouvements, un ressort est armé progressivement, par exemple entre 18 et 24 heures, et il est ensuite libéré d'un seul coup à minuit pour faire avancer brusquement le disque en faisant dégager le sautoir.In mechanical watches, in which sufficient energy can be stored each day in the barrel spring, the locking of the calendar disc is generally obtained by means of a jumper, solicited by means of a spring, in engagement with a internal toothing of the disc. At the time of the date change, it is enough to apply to the calendar disc a torque sufficient to overcome the action of the jumper spring, and to advance the disc by one notch. In order to limit the value of the torque, in certain movements, a spring is gradually armed, for example between 18 and 24 hours, and it is then released all at once at midnight to suddenly advance the disc by releasing the jumper.

Dans les montres électroniques à quartz, que l'on souhaite de plus en plus plates, avec des autonomies de marche de plus en plus longues, le problème du calendrier devient crucial, car l'énergie à disposition chaque jour du moteur pour faire avancer le calendrier doit être considérablement réduite. De même, le couple maximum que peut délivrer un moteur de montre électronique décroît en même temps que son encombrement diminue.In electronic quartz watches, which are desired to be increasingly flat, with increasingly long running times, the problem of the calendar becomes crucial, because the energy at engine's daily provision for advancing the schedule should be significantly reduced. Likewise, the maximum torque that an electronic watch engine can deliver decreases at the same time as its size decreases.

Le brevet suisse 591 720 propose un mécanisme de calendrier comprenant une couronne de calendrier entraînée une fois par jour par un mobile d'entraînement effectuant un tour par 24 heures. Un sautoir monté articulé sur le bâti du mécanisme est commandé par une came prévue sur ce même mobile pour s'engager pendant la plus grande partie de la journée contre une denture intérieure de la couronne et pour s'escamoter pendant que la couronne doit avancer d'un pas. Ce mécanisme présente toutefois deux désavantages majeurs.Swiss patent 591,720 proposes a calendar mechanism comprising a calendar crown driven once a day by a training mobile performing one revolution per 24 hours. A jumper mounted articulated on the frame of the mechanism is controlled by a cam provided on this same mobile to engage for most of the day against an internal toothing of the crown and to retract while the crown has to advance d 'a step. However, this mechanism has two major disadvantages.

D'une part, l'entraînement de la couronne de calendrier est réalisé par une simple languette solidaire du mobile faisant un tour par 24 heures, et qui collabore avec la denture intérieure, à profil sensiblement triangulaire de la couronne. Dans ces conditions, lorsque le sautoir est escamoté, c'est-à-dire pendant un changement de date, la couronne de calendrier n'est plus verrouillée, et elle risque de se déplacer, soit de plus d'un pas, soit au moins d'une fraction importante de pas, ce qui perturbe la lecture de la date pendant toute la phase d'entraînement du disque de calendrier. Pour réduire l'importance de cet inconvénient, le mobile qui fait un tour par 24 heures est muni d'une deuxième came, qui collabore avec un bec du sautoir pour le ramener le plus rapidement possible en position d'engagement avec la couronne de calendrier, après le changement de date. Cette mesure ne fait que réduire la durée pendant laquelle le risque de déréglage de l'indication de la date subsiste et en outre, le déplacement accéléré du sautoir en position d'engagement augmente, même si c'est faiblement, le couple demandé au mobile d'entraînement à ce moment.On the one hand, the calendar crown is driven by a simple tongue attached to the mobile making one revolution per 24 hours, and which collaborates with the internal toothing, with a substantially triangular profile of the crown. Under these conditions, when the jumper is retracted, that is to say during a change of date, the calendar crown is no longer locked, and it risks moving, either by more than one step, or at less than a significant fraction of steps, which disturbs the reading of the date during the entire training phase of the calendar disc. To reduce the importance of this drawback, the mobile which makes one revolution per 24 hours is provided with a second cam, which collaborates with a spout of the jumper to bring it back as quickly as possible to the position of engagement with the calendar crown , after the date change. This measure only reduces the period during which the risk of disregarding the date indication remains and, in addition, the accelerated movement of the jumper in the engagement position increases, even if only slightly, the torque requested from the mobile. drive at this time.

D'autre part, la construction du mécanisme du brevet suisse 591 720 découle directement des mécanismes connus, et il en résulte en particulier que le mode d'accouplement de la dent du sautoir avec la denture intérieure de la couronne de calendrier n'est pas optimal. Ainsi, la dent du sautoir présente des flancs inclinés, tels qu'on les trouve dans les mécanismes classiques, dans lesquels l'action de la denture du disque sur ses flancs, au moment du changement de date, doit provoquer un déplacement du sautoir à l'encontre de la force du ressort d'armage de ce sautoir. Or, pour que ce sautoir puisse garantir un verrouillage correct du calendrier en dehors des changements de date, il doit être appliqué contre la denture intérieure de la couronne de calendrier avec une force importante, correspondant approximativement à la force du ressort d'armage d'un sautoir classique. L'appui normal du sautoir du dispositif décrit étant assuré en réalité par le mobile qui fait un tour par 24 heures, muni de sa came de commande, il s'ensuit que le sautoir exerce, malgré tout, dans la plus grande partie de la journée, un couple résistant important sur ce mobile.On the other hand, the construction of the mechanism of the Swiss patent 591 720 follows directly from the known mechanisms, and it follows in particular that the mode of coupling of the jumper tooth with the internal toothing of the calendar crown is not optimal. Thus, the jumper tooth has inclined flanks, as found in conventional mechanisms, in which the action of the teeth of the disc on its flanks, at the time of change of date, must cause a movement of the jumper against the force of the winding spring of this jumper. However, so that this jumper can guarantee a correct locking of the calendar apart from the date changes, it must be applied against the internal toothing of the calendar crown with a significant force, corresponding approximately to the force of the winding spring of a classic long necklace. The normal support of the jumper of the device described being in reality provided by the mobile which makes one revolution per 24 hours, provided with its control cam, it follows that the jumper exercises, despite everything, in most of the day, a significant resistant couple on this mobile.

C'est pourquoi, la présente invention propose un mécanisme du type de celui du brevet précité, mais qui est encore perfectionné pour d'une part exclure complètement les risques de déplacements intempestifs de la couronne de calendrier pendant les changements de date, et pour simultanément, pendant le restant de la journée, assurer un verrouillage parfait de la couronne pour une sollicitation inférieure du moteur.This is why, the present invention proposes a mechanism of the type of that of the aforementioned patent, but which is further improved for on the one hand completely exclude the risks of untimely displacements of the calendar crown during the date changes, and for simultaneously , during the rest of the day, ensure perfect locking of the crown for lower stress on the engine.

La présente invention sera bien comprise à la lecture de la description suivante, faite en référence aux dessins joints, parmi lesquels les figures 1 à 4 représentent de manière schématique le mécanisme de calendrier dans 4 de ses positions successives au cours d'un changement de date.The present invention will be clearly understood on reading the following description, made with reference to the accompanying drawings, among which FIGS. 1 to 4 schematically represent the calendar mechanism in 4 of its successive positions during a change of date .

Dans la figure 1, on a représenté de façon schématique un mécanisme de calendrier comprenant un organe indicateur constitué par une couronne de calendrier 1, un mobile d'entraînement 2 effectuant un tour par 24 heures, un mobile intermédiaire 3 qui assure la transmission du mobile d'entraînement 2 à la couronne de calendrier 1, et une bascule-sautoir 4 articulée sur le bâti 5 du mécanisme. Les moyens d'accouplement qui assurent l'entraînement à la couronne 1 sont constitués par un doigt 6 prévu sur la périphérie du mobile d'entraînement 2, par une première denture 7 du mobile intermédiaire 3, dans laquelle vient s'engager, une fois par jour, le doigt 6, et par la denture intérieure 8 de la couronne de calendrier 1, qui s'engage avec une deuxième denture 9 du mobile intermédiaire 3. En outre, la bascule-sautoir 4 comporte un premier bras élastique 10, à l'extrémité duquel est formée une dent 11 qui vient s'engager avec la denture 7 du mobile intermédiaire 3. Un deuxième bras 12 de la bascule-sautoir 4 comporte une projection 13 qui vient s'appuyer sur une came 14 formée dans l'intervalle entre le mobile d' entraînement 2 et la roue 21 qui l'entraîne. La came 14 comporte une échancrure 15, dans laquelle vient s'engager la projection 13 pour permettre à la bascule-sautoir 4 de pivoter dans le sens de la flèche 16 lorsque le mobile d'entraînement 2 doit entraîner le mobile intermédiaire 3, la dent 11 du bras 10 se dégageant alors de la denture 7 du mobile intermédiaire 3. Enfin, le deuxième bras 12 de la bascule-sautoir 4 comporte un bec d'extrémité 17, dont l'écartement de la branche 10 est légèrement inférieur au plus petit diamètre de la came 14, de manière à assurer le maintien du sautoir 4 entre le mobile 2 et sa roue d'entraînement 21, au niveau de la came 14, dans un état préassemblé de ces éléments. Cette disposition apparaît plus clairement dans la figure 5.In Figure 1, there is shown schematically a calendar mechanism comprising an indicator member constituted by a calendar crown 1, a driving mobile 2 performing one revolution per 24 hours, an intermediate mobile 3 which ensures the transmission of the mobile drive 2 to the calendar crown 1, and a jumper 4 articulated on the frame 5 of the mechanism. The coupling means which ensure the drive to the crown 1 are constituted by a finger 6 provided on the periphery of the driving mobile 2, by a first toothing 7 of the intermediate mobile 3, in which comes to engage, once per day, the finger 6, and by the internal toothing 8 of the calendar crown 1, which engages with a second toothing 9 of the intermediate mobile 3. In addition, the rocker-jumper 4 comprises a first elastic arm 10, the end of which is formed a tooth 11 which engages with the teeth 7 of the intermediate mobile 3. A second arm 12 of the rocker-jumper 4 has a projection 13 which comes to bear on a cam 14 formed in the gap between the driving mobile 2 and the wheel 21 which entails. The cam 14 has a notch 15 in which the projection 13 engages to allow the jumper lever 4 to pivot in the direction of the arrow 16 when the driving mobile 2 must drive the intermediate mobile 3, the tooth 11 of the arm 10 then emerging from the teeth 7 of the intermediate mobile 3. Finally, the second arm 12 of the rocker-jumper 4 has an end spout 17, the spacing of the branch 10 is slightly less than the smallest diameter of the cam 14, so as to maintain the jumper 4 between the mobile 2 and its drive wheel 21, at the level of the cam 14, in a preassembled state of these elements. This arrangement appears more clearly in Figure 5.

Bien entendu, les moyens d'accouplement permettant la transmission du mouvement du mobile d'entraînement 2 à la couronne de calendrier 1 décrits ci-dessus sont donnés à titre d'exemple, et on pourrait aussi bien envisager la suppression du mobile intermédiaire 3. Ce dernier présente toutefois l'avantage de pouvoir porter deux dentures 7, 9 dont l'une est parfaitement adaptée à sa collaboration avec la dent de sautoir, et l'autre à l'entraînement de la couronne de calendrier.Of course, the coupling means allowing the transmission of the movement of the driving mobile 2 to the calendar crown 1 described above are given by way of example, and one could as well envisage the elimination of the intermediate mobile 3. The latter however has the advantage of being able to wear two teeth 7, 9 one of which is perfectly suited to its collaboration with the jumper tooth, and the other to the drive of the calendar crown.

Selon un aspect de l'invention, on notera que les profils respectifs du doigt 6 du mobile d'entraînement 2, et de la denture 7 du mobile intermédiaire 3, de même que ceux de la denture 9 de ce mobile intermédiaire 3 et de la denture 8 de la couronne de calendrier 1 sont définis de manière à permettre un engagement du type autoverrouillant de ces différentes dentures, c'est-à-dire qu'à partir du moment où deux dentures correspondantes se sont engagées l'une avec l'autre, la denture menante interdit toute rotation indépendante dans un sens ou dans un autre de la denture menée qui permettrait de perdre l'indication de la date. Cette disposition permet de garantir, même lorsque la dent 11 du sautoir est escamotée, que la couronne de calendrier est parfaitement verrouillée.According to one aspect of the invention, it will be noted that the respective profiles of the finger 6 of the driving mobile 2, and of the toothing 7 of the intermediate mobile 3, as well as those of the toothing 9 of this intermediate mobile 3 and of the toothing 8 of the calendar crown 1 are defined so as to allow engagement of the self-locking type of these different toothing, that is to say that from the moment when two corresponding toothing are engaged one with the other, the leading teeth prohibits any independent rotation in one direction or another of the led teeth which would make it possible to lose the indication of the date. This arrangement makes it possible to guarantee, even when the tooth 11 of the jumper is retracted, that the calendar crown is perfectly locked.

En outre, pour assurer un verrouillage correct du mobile intermédiaire 3 pendant la plus grande partie de la journée, c'est-à-dire pendant que la dent 11 est engagée dans la denture 7, malgré un appui très faible de la projection 13 sur la came 14, les surfaces d'engagement 20 de la dent 11 présentent un front raide. Ainsi, pour une même force d'appui de la dent 11, l'effort nécessaire pour faire tourner le mobile intermédiaire 3 devra être plus important que dans les constructions classiques. Inversement, pour une même qualité de verrouillage du mobile intermédiaire 3, et donc de 1a couronne de calendrier 1, la force d'appui de la dent 11 contre le mobile 3 sera plus faible, et donc également le couple résistant appliqué par la projection 13 sur le mobile d'entraînement 2.In addition, to ensure correct locking of the intermediate mobile 3 for most of the day, that is to say while the tooth 11 is engaged in the teeth 7, despite a very slight support of the projection 13 on the cam 14, the engagement surfaces 20 of the tooth 11 have a stiff front. Thus, for the same bearing force of the tooth 11, the force required to rotate the intermediate mobile 3 will have to be greater than in conventional constructions. Conversely, for the same quality of locking of the intermediate mobile 3, and therefore of the calendar crown 1, the bearing force of the tooth 11 against the mobile 3 will be lower, and therefore also the resistive torque applied by the projection 13 on the training mobile 2.

En fait, l'angle des surfaces d'engagement 20 pourrait être nul, c'est-à-dire visant le centre du mobile 3. L'on aurait alors un verrouillage bloquant avec une force nulle.In fact, the angle of the engagement surfaces 20 could be zero, that is to say targeting the center of the mobile 3. There would then be a blocking lock with zero force.

Cependant, afin de pouvoir effectuer des changements de date manuellement par l'intermédiaire du mobile 3, les angles des surfaces d'engagement ne sont pas nuls mais sont à front raide, car manuellement l'on dispose de forces très grandes pour vaincre la résistance de la dent 11 du sautoir 10.However, in order to be able to carry out date changes manually via the mobile 3, the angles of the engagement surfaces are not zero but are with a steep front, because manually very large forces are available to overcome the resistance tooth 11 of jumper 10.

Dans la figure 2 on a représenté le mécanisme de la figure 1 peu avant le début d'un changement de date. Le doigt 6 va entrer en contact avec la denture 7 du mobile intermédiaire 3, et la projection 13 du bras 12 de la bascule-sautoir 4 a atteint l'échancrure 15 de la came 14, ce qui permettra au mobile intermédiaire 3 de dégager la dent 11 du sautoir sans devoir lui appliquer aucun effort.In Figure 2 there is shown the mechanism of Figure 1 shortly before the start of a date change. The finger 6 will come into contact with the teeth 7 of the intermediate mobile 3, and the projection 13 of the arm 12 of the rocker-jumper 4 has reached the notch 15 of the cam 14, which will allow the intermediate mobile 3 to release the tooth 11 of the jumper without having to apply any effort to it.

Dans la figure 3, on a représenté la situation du mécanisme de calendrier en plein changement de date. La dent 6 est entièrement engagée dans la denture 7 du mobile intermédiaire 3. Dans cette position, ce dernier mobile ne peut osciller que très faiblement de part et d'autre de la position qui lui est imposée par le doigt 6, et les écarts que peut prendre la couronne de calendrier 1 par rapport à sa position nominale sont encore plus faibles du fait de la démultiplication introduite par le mobile intermédiaire 3. On remarquera encore sur cette figure que la projection 13 étant arrivée au fond de l'échancrure 15, la dent 11 est entièrement dégagée de la denture 7 du mobile intermédiaire 3. Il est à remarquer que dans cette position, un déplacement de la couronne de calendrier 1, provoqué par exemple par une manoeuvre volontaire de mise à la date, risquerait d'endommager le mécanisme. Il convient donc de prévoir au moins un accouplement à friction dans le mécanisme de correction manuelle de la date, par exemple sur l'axe du mobile 3, si celui-ci est utilisé pour 1a mise à la date manuelle par un train d'engrenages non représenté et liant le mobile 3 à la tige de mise à l'heure.In Figure 3, the situation of the calendar mechanism in full change of date is shown. The tooth 6 is fully engaged in the teeth 7 of the intermediate mobile 3. In this position, the latter mobile can only oscillate very slightly on either side of the position imposed on it by the finger 6, and the differences that can take the calendar crown 1 relative to its nominal position are even lower due to the reduction introduced by the intermediate mobile 3. It will also be noted in this figure that the projection 13 having arrived at the bottom of the notch 15, the tooth 11 is entirely disengaged from the toothing 7 of the intermediate mobile 3. It should be noted that in this position, a displacement of the calendar crown 1, caused for example by a voluntary maneuver of date setting may damage the mechanism. It is therefore advisable to provide at least one friction coupling in the manual date correction mechanism, for example on the axis of the mobile 3, if the latter is used for manual date setting by a gear train not shown and linking the mobile 3 to the time-setting rod.

Il n'y a, de ce fait, pas de possibilité d'effectuer un changement manuel de la date pendant le changement automatique de celle-ci à minuit, et ainsi, il n'y a pas de détérioration possible du mécanisme.There is therefore no possibility of carrying out a manual change of the date during the automatic change of the latter at midnight, and thus, there is no possible deterioration of the mechanism.

Dans la figure 4 on a représenté le mécanisme à la fin d'un changement de date. La projection 13 arrive à la fin de l'échancrure 15 de la came 14, et la bascule-sautoir a repris sa position dans laquelle la dent 11 s'engage avec le mobile intermédiaire 3. La couronne de calendrier a ainsi avancé de 1 pas, et elle se trouve à nouveau verrouillée du fait d'un léger appui de la projection 13 sur la partie cylindrique de la came 14.In Figure 4 there is shown the mechanism at the end of a date change. The projection 13 arrives at the end of the notch 15 of the cam 14, and the jumper rocker has resumed its position in which the tooth 11 engages with the intermediate mobile 3. The calendar crown has thus advanced by 1 step , and it is again locked due to a slight support of the projection 13 on the cylindrical part of the cam 14.

Dans le dispositif représenté, le calendrier avance de 1 pas pendant une période approximative de deux heures. Toutefois, il ne serait pas exclu d'appliquer la même invention à un calendrier sautant, c'est-à-dire dans lequel le mobile d'entraînement 2 n'aurait pas une rotation continue, mais serait actionné par intermittences, lors de la libération de l'énergie emmagasinée pendant plusieurs heures dans un ressort d'armage par exemple.In the device shown, the calendar advances by 1 step during an approximate period of two hours. However, it would not be excluded to apply the same invention to a jumping calendar, that is to say in which the driving mobile 2 would not have a continuous rotation, but would be actuated intermittently, during the release of the energy stored for several hours in a winding spring for example.

Bien qu'elle ait été décrite en relation avec ce mode de réalisation particulier, la présente invention ne s'y trouve nullement limitée, mais elle est au contraire susceptible de faire l'objet de nombreuses modifications et variantes qui apparaîtront à l'homme du métier.Although it has been described in relation to this particular embodiment, the present invention is in no way limited thereto, but it is on the contrary liable to be subject to numerous modifications and variants which will appear to those skilled in the art. job.

Claims (5)

1. Mécanisme de calendrier pour pièce d'horlogerie comprenant un premier mobile d'entraînement (2) effectuant un tour par 24 h., un organe indicateur (1), des moyens d'accouplement (6, 3, 7, 9, 8) assurant, une fois par 24 h., l'entraînement sur un pas de l'organe indicateur par ledit mobile, et un sautoir (4) articulé sur le bâti (5) du mécanisme et commandé par le mobile de manière à verrouiller en position les moyens d'accouplement aussi longtemps que l'organe indicateur n'est pas entraîné, et à libérer les moyens d'accouplement pendant que l'organe indicateur est entraîné, caractérisé en ce qu'en outre les moyens d'accouplement assurent un entraînement autoverrouillant de l'organe indicateur et en ce que les surfaces d'engagement (20) du sautoir avec les moyens d'accouplement présentent des fronts raides garantissant un verrouillage efficace des moyens d'accouplement pour une force d'appui faible du sautoir.1. Calendar mechanism for a timepiece comprising a first driving mobile (2) performing one revolution per 24 h., An indicator member (1), coupling means (6, 3, 7, 9, 8 ) ensuring, once every 24 h., the drive on one step of the indicator member by said mobile, and a jumper (4) articulated on the frame (5) of the mechanism and controlled by the mobile so as to lock in position the coupling means as long as the indicator member is not being driven, and to release the coupling means while the indicator member is being driven, characterized in that, in addition, the coupling means provide a self-locking drive of the indicator member and in that the engagement surfaces (20) of the jumper with the coupling means have stiff edges guaranteeing effective locking of the coupling means for a low pressing force of the jumper. 2. Mécanisme selon la revendication 1, caractérisé en ce que les moyens d'accouplement comportent un deuxième mobile (3) comportant une première denture (7) s'engageant avec un doigt (6) du premier mobile et une deuxième denture (9) s'engageant avec une denture (8) de l'organe indicateur.2. Mechanism according to claim 1, characterized in that the coupling means comprise a second mobile (3) having a first toothing (7) engaging with a finger (6) of the first mobile and a second toothing (9) engaging with a toothing (8) of the indicating member. 3. Mécanisme selon la revendication 2, caractérisé en ce que le sautoir (4) agit sur une denture (7) du deuxième mobile.3. Mechanism according to claim 2, characterized in that the jumper (4) acts on a toothing (7) of the second mobile. 4. Mécanisme selon l'une des revendications 2 ou 3, caractérisé en ce que le sautoir présente deux branches (10, 12) se rejoignant au voisinage de son articulation sur le bâti du mécanisme, la première branche étant susceptible de se déformer élastiquement et portant à son extrémité une dent (11) s'engageant avec les moyens d'accouplement, et la deuxième branche étant munie dans sa partie médiane d'une butée (13) collaborant avec une came (14) du premier mobile.4. Mechanism according to one of claims 2 or 3, characterized in that the jumper has two branches (10, 12) meeting in the vicinity of its articulation on the frame of the mechanism, the first branch being capable of deforming elastically and carrying at its end a tooth (11) engaging with the coupling means, and the second branch being provided in its central part with a stop (13) collaborating with a cam (14) of the first mobile. 5. Mécanisme selon la revendication 4, caractérisé en ce que le sautoir (4) est monté entre le mobile (2) et la roue d'entraînement (21) de ce mobile, au niveau de la came (14), l'écart entre l'extrémité (17) de la deuxième branche (12) et la première branche (10) étant légèrement plus faible que le plus petit diamètre de ladite came, de manière à assurer le maintien du sautoir (4) entre le mobile (2) et la roue (21) dans un état pré-assemblé.5. Mechanism according to claim 4, characterized in that the jumper (4) is mounted between the mobile (2) and the drive wheel (21) of this mobile, at the cam (14), the gap between the end (17) of the second branch (12) and the first branch (10) being slightly smaller than the smallest diameter of said cam, so as to maintain the jumper (4) between the mobile (2 ) and the wheel (21) in a pre-assembled state.
EP84105243A 1983-05-31 1984-05-09 Date indicating mechanism for watches Withdrawn EP0129683A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2965/83 1983-05-31
CH296583 1983-05-31

Publications (1)

Publication Number Publication Date
EP0129683A1 true EP0129683A1 (en) 1985-01-02

Family

ID=4245622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105243A Withdrawn EP0129683A1 (en) 1983-05-31 1984-05-09 Date indicating mechanism for watches

Country Status (2)

Country Link
EP (1) EP0129683A1 (en)
JP (1) JPS6052792A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7170824B2 (en) 2003-11-25 2007-01-30 Montres Breguet Sa Calendar mechanism having means driving and correcting two indicators
WO2012127052A1 (en) * 2011-03-23 2012-09-27 Samep S.A. - Montres Emile Pequignet Jumper, and timepiece movement and timepiece comprising such a jumper
CN105446112A (en) * 2014-08-27 2016-03-30 天津海鸥表业集团有限公司 Intermittent reciprocating motion control system in watch

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH661171GA3 (en) * 1985-09-27 1987-07-15
SG102647A1 (en) * 2000-12-22 2004-03-26 Ebauchesfabrik Eta Ag Timepiece provided with a date having a large aperture

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH47836A (en) * 1909-04-06 1910-08-16 Georg Duffing Gear for positive power transmission
CH335182A (en) * 1957-05-09 1958-12-31 D Horlogerie Le Coultre Et Cie Calendar timepiece
GB2026213A (en) * 1978-06-27 1980-01-30 Seiko Instr & Electronics Date driving mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH47836A (en) * 1909-04-06 1910-08-16 Georg Duffing Gear for positive power transmission
CH335182A (en) * 1957-05-09 1958-12-31 D Horlogerie Le Coultre Et Cie Calendar timepiece
GB2026213A (en) * 1978-06-27 1980-01-30 Seiko Instr & Electronics Date driving mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7170824B2 (en) 2003-11-25 2007-01-30 Montres Breguet Sa Calendar mechanism having means driving and correcting two indicators
WO2012127052A1 (en) * 2011-03-23 2012-09-27 Samep S.A. - Montres Emile Pequignet Jumper, and timepiece movement and timepiece comprising such a jumper
FR2973126A1 (en) * 2011-03-23 2012-09-28 Samep Montres Emile Pequignet SAUTOIR, WATCHING MOVEMENT AND PIECE OF WATCHMAKING EQUIPPED WITH SUCH A SAUTOIR
CN105446112A (en) * 2014-08-27 2016-03-30 天津海鸥表业集团有限公司 Intermittent reciprocating motion control system in watch
CN105446112B (en) * 2014-08-27 2018-05-22 天津海鸥表业集团有限公司 Intermittent reciprocating motion control system in watch

Also Published As

Publication number Publication date
JPS6052792A (en) 1985-03-26

Similar Documents

Publication Publication Date Title
EP2428855B1 (en) Clock piece fitted with a device for displaying predetermined time periods
EP0772104A1 (en) Timepiece with a chronograph mechanism
EP3499319A2 (en) Clutch lever and clutch device for a clockwork mechanism
EP2565729A1 (en) Calendar mechanism
EP3483663B1 (en) Drive device for clock calendar system
EP1152303B1 (en) Timepiece with winding mechanism and mechanism for the correction of at least two indicating organs
CH681761B5 (en) Part of clockwork mechanical and / or electromechanical, provided with automatic retrograde moving display means.
EP0987609B1 (en) Annual calendar mechanism for clockwork-movement
EP3430481B1 (en) Watch movement comprising a retrograde display and a jump hour ring
EP3584643B1 (en) Instantaneous command device for date display of timepieces
EP2226687B1 (en) Disengaging device for timepiece mechanism, and watch movement comprising this device
WO2011160970A1 (en) Clockwork movement exhibiting chronograph and countdown functions
EP0129683A1 (en) Date indicating mechanism for watches
EP3382468B1 (en) Movement with extension of running reserve
EP3333641B1 (en) Clockwork mechanism for controlling a plurality of displays
CH713702A2 (en) Torque compensation mechanism, constant force mechanism, timepiece movement and timepiece.
EP2957964B1 (en) Tilting coupling device for timepiece
EP3173877B1 (en) Timepiece calendar system
FR2615970A1 (en) DEVICE FOR CONTROLLING OR CORRECTING THE DAY OR QUANTIME DISPLAY FOR A WATCH, IN PARTICULAR A WRIST WATCH
CH691088A5 (en) mechanism at the time of a watch with perpetual calendar movement.
EP2615505A1 (en) Mechanism for indicating on request information for a timepiece movement
EP3324249A1 (en) Clutch system for chronograph
EP2798414B1 (en) Spring for clock movement
EP3252543B1 (en) Display device for timepiece movement
EP0668551A1 (en) Watch with two opposite displays

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850903

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GROOTHUIS, MICHIEL