WO2009004423A2 - Device for actuating in its drop a large rocker for controlling the display of an instantaneous date mechanism of a timepiece having a perpetual or secular date mechanism - Google Patents

Device for actuating in its drop a large rocker for controlling the display of an instantaneous date mechanism of a timepiece having a perpetual or secular date mechanism Download PDF

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Publication number
WO2009004423A2
WO2009004423A2 PCT/IB2008/001422 IB2008001422W WO2009004423A2 WO 2009004423 A2 WO2009004423 A2 WO 2009004423A2 IB 2008001422 W IB2008001422 W IB 2008001422W WO 2009004423 A2 WO2009004423 A2 WO 2009004423A2
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WO
WIPO (PCT)
Prior art keywords
rocker
month
large rocker
days
return spring
Prior art date
Application number
PCT/IB2008/001422
Other languages
French (fr)
Other versions
WO2009004423A3 (en
Inventor
Didier Faoro
Ludovic Punzi
Original Assignee
Patek, Philippe 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 Patek, Philippe Sa filed Critical Patek, Philippe Sa
Priority to EP08762763.4A priority Critical patent/EP2160659B1/en
Publication of WO2009004423A2 publication Critical patent/WO2009004423A2/en
Publication of WO2009004423A3 publication Critical patent/WO2009004423A3/en

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25373—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by an energy source which is released at determined moments by the clockwork movement
    • G04B19/2538—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by an energy source which is released at determined moments by the clockwork movement automatically corrected at the end of months having less than 31 days
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped

Definitions

  • the subject of the present invention is an actuating device in its fall of a large control lever for displaying an instantaneous guantieme of a timepiece provided with a perpetual or secular calendar mechanism such as a wristwatch or pocket watch in particular.
  • the perpetual or secular instantaneous calendar mechanisms generally comprise a large flip-flop controlling the passage from one day to the next of the date display.
  • this large control lever In order to be able to instantly display the transition from the last day of a month to the first day of the following month in a perpetual or secular calendar mechanism, this large control lever must be able to instantly advance the display of the date one, two, three or four steps to allow the 31st of a month to pass on the 1st of the following month, from the 30th of a month to the 1st of the following month, 29th of February of a leap year March 1 and February 28 to March 1 in non-leap years.
  • This large rocker is armed against the action of its spring for 24 hours by the date mechanism and released at midnight so that its fall under the action of its return spring moves the display of the date of a step at the end of 31 days, two steps at the end of the 30 days, three steps at the end of the 29 days and four steps at the end of the 28 days.
  • the amplitude of the arming stroke, and therefore of the fall, of the large rocker is determined by a cam of the months driven at a rate of one revolution per year and which has a secondary cam of the leap years.
  • Such a date display mechanism is described for example in the published European patent application EP 1734419.
  • the large scale of Instant date mechanism controls not only the date indicator but also the indicator of the name of the days and the indicator of the months.
  • the strength of the large rocker is sufficient to make the transition from 31 of a month to the 1 st of the following month, its return spring being few tense in this case and so that this force is not such that the date indicator jumps four or five steps while it should do three or four when the months of 28 and 29 days to the following month, the return spring of the large rocker being in this case very tight.
  • the object of the present invention is to provide an instant perpetual or secular calendar mechanism that avoids the aforementioned drawback and is therefore completely reliable and easier to adjust and adjust.
  • FIG. 1 is a partial top plan view of the instantaneous perpetual calendar mechanism.
  • Figure 2 is a partial bottom plan view of the instantaneous perpetual calendar mechanism.
  • Figure 3 is a partial schematic top view of the instantaneous perpetual calendar mechanism where the large rocker is in the rest position.
  • Figure 4 is a view similar to Figure 3, the large rocker being in its maximum lifting position for a month of thirty-one days.
  • Figure 5 is a view similar to Figure 3, the large rocker being in its maximum lift position for a month of thirty days.
  • Figure 6 is a view similar to Figure 3, the large rocker being in its maximum lifting position for a month of twenty nine days.
  • Figure 7 is a view similar to Figure 3, the large rocker being in its maximum lift position for a month of twenty eight days.
  • the perpetual or secular instantaneous calendar mechanism according to the present invention is in its general architecture similar to that described in the European patent application EP 1734419 and differs from it only as regards the device for actuating its large flip-flop in his daily fall.
  • the perpetual perpetual calendar mechanism itself will be described below only briefly and to the extent necessary for the understanding of the drive device of its large latch in its fall.
  • the kinematic connection between the large rocker and the indicator of the days of the week and months is not illustrated or described, this being described in detail in the document cited above.
  • the instantaneous perpetual calendar mechanism illustrated comprises a date plate or plate 1, on which is pivoted a large rocker 2 about an axis 3.
  • This large rocker 2 comprises a pawl 32 driving the date indicator by a known kinematic, and if necessary the indicators of the day of the week and the month, by the finger of the days 44 respectively the finger of the months 38.
  • a rake 9 is pivoted on the axis 3 of the large rocker 2 and comprises on the one hand a feeler 10 cooperating with the date cam 6 and on the other hand a toothing 11 cooperating with a lever 12 months.
  • month 12 is pivoted at 13 on the large rocker 2 and is connected to the rake 9 by a spring 14.
  • the first end 15 of the lever 12 months cooperates with the toothing 11 of the rake 9 and the second end 16 of the lever months 12 cooperates with a cam 17 months driven in rotation by the finger of the month 38 which has at its end a hook 43, articulated on the large rocker 2, during the fall thereof, at a rate of one revolution per year . This function will be described more precisely later.
  • This cam months also comprises a leap cam 20 driven quarter turn per year and having three first faces 21 equidistant from its axis of rotation 22 and a second face 23 located at a greater distance from the axis of rotation 22 as the first three faces 21 of this leap cam.
  • first three faces 21 is in a notch of the cam 17 months corresponding to the month of February, it determines the position that must occupy the lever months 12 for the month of February twenty-eight days.
  • the second face 23 When the second face 23 is located in said notch of the cam months, it determines the position of the month lever for the month of February leap years.
  • This mechanism makes it possible to arm each day the large rocker 2 with an amplitude corresponding to the current month and then at midnight to let it fall back under the action of its actuating device up to its rest position determined by the pin 5.
  • its pawl 32 During this daily fall of the large rocker 2, its pawl 32 instantly drives the date indicator every day of a step, except the last day of the month when this date indicator is instantly driven the number of steps necessary to position it on the first of the following month as described in particular in EP 1734419.
  • the lever of the months 12 and the big rocker 2 occupy daily just after midnight a rest position during which the lever of the months 12 raises the number of days of the current month.
  • the rake 11 performs a no-load run for a predetermined distance before coming into contact with the lever of the months 12, this active distance being variable and depending on the number of days of the current month.
  • the large rocker 2 is driven via the lever of months 12 in a clockwise rotational movement whose amplitude is based on said number of days of the current month. Then the large flip-flop 2 makes a fall in the opposite direction at the end of this active phase by driving all the display mechanisms.
  • the date display mechanism includes a date indicator consisting of a rotating annular piece rotatably mounted on the calendar board 1 by means of rollers.
  • This annular part 30 has date inscriptions 1 to 31 on its front face. These inscriptions are large and visible in a date window that is larger than the window of the months and located at 12 o'clock.
  • the annular piece 30 is provided on its posterior face with a set of teeth which has the particularity of being internal and not traversing in the form of recesses 31.
  • the inscriptions 1 to 31 on the front face may be large for a given width of the annular piece 30.
  • a large flip-flop 32 is pivotally mounted on the large flip-flop 2 by means of an axis 33 and arranged to cooperate with the toothing 31 of the annular piece 30 to blow up the date indicator daily with a single step during the fall of the big rocker 2, whatever the amplitude of the rotational movement of the big rocker 2.
  • a return spring 34 mounted on the large rocker 2 is arranged to urge, in the rest position, the big rocker pawl 32 against a pin 35 driven into the large rocker 2.
  • the date display mechanism further comprises a date jumper 36 arranged to cooperate with the toothing 31 of the annular piece 30 by the action of a spring 37. Due to the available space between two teeth of the toothing 31, this jumper 36 has three functional flanks.
  • Two sidewalls are oriented to reposition the annular piece 30 with a favorable and constant slip angle.
  • a third sidewall is arranged in such a way that the direction of the force applied to the teeth of the toothing 31 passes through the center of the axis of rotation of the date jumper 36.
  • the calendar mechanism also has a finger of months 38 which is articulated on the large rocker 2. This must is provided in its median portion of a projecting portion in the form of a pin 39 arranged to cooperate with an outer periphery 40 forming a cylindrical edge of the toothing 31 and with a notch 41 provided in this periphery.
  • the finger months has for this purpose an elastic extension 42 for biasing the pin 39 against said periphery 40 and, at the end of the month, in the notch 41 which is indexed with the teeth of the toothing 31 of the date indicator .
  • the finger of the months 38 driven by the fall of the big rocker 2 will blow the date indicator 30 four steps for February 28, three steps for February 29 and two steps for a month of 30 days, according to the amplitude of the movement of the large flip-flop 2 determined by the position of the lever of the months 12 on the cam of the months 17 during said rest position.
  • the bigger the big rocker 2 gets up a long time the farther it goes to get the notch 41 with the finger of the months 38 and the more it will blow a number of important steps to the date indicator.
  • the pin 39 of the finger of the months 38 thus has the function of making up for the days at the end of the month on the date indicator.
  • hook 43 For the jump of the months, one finds at the end of the finger of the months 38 a hook 43. For all the days except the last day of the month, the finger of the months 38 and its hook 43 remain raised thanks to the pin 39. Hook 43 thus passes next to a star of the months without dragging it at the fall of the big rocker 2 at midnight.
  • the pin 39 falls in the notch 41 and the hook 43 moves on a curve such that it causes a tooth of the star of the months on a step during the fall of the big rocker 2 at midnight.
  • the cam of the months 17 is also advanced by one step.
  • the day display mechanism is also controlled by the large flip-flop 2 and comprises for this purpose a day finger 44 which is pivotally mounted on the large rocker 2 by the same axis as the finger of the month 38.
  • the finger of days 44 is designed to blow a 45-day star every day, regardless of the race of the big rocker 2 when it falls at midnight.
  • This star of days 45 is attached to a disc of the days (not illustrated) carrying inscriptions of the days visible in a window.
  • the large latch 2 is driven in its fall, when the probe 10 falls from the upper part of the date cam 6 by a leaf spring.
  • the object of the present invention is to allow the removal of this regulator of the falling speed of the large scale which is complex while avoiding any malfunction of the date mechanism by replacing the return spring of the large scale by a device of particular actuation of this large rocker.
  • This device for actuating or driving the large rocker 2 in its fall has a pin 24 driven into the free end 25 of the large rocker 2.
  • This actuating device further comprises a first large spring 26 fixed under the calendar board 1 and constantly resting on the pin 24 through the large rocker.
  • this first return spring 26 always exerts a force on the pin 24. This first return spring thus allows to maintain the large rocker 2 in the rest position between its active phases of arming and falling.
  • the angle ⁇ comprised between a straight line a connecting the through pin 24 and the pivot axis 3 of the large rocker 2 and a perpendicular b to the blade spring of the first spring of big rocker 26 is in this example of 56 °.
  • This angle ⁇ could have another value, it determines in fact the lever arm with which the first large flip-flop spring 26 acts on said large flip-flop 2.
  • this angle ⁇ varies as a function of the angular position of the large rocker 2. When this large rocker 2 is in the maximum lift position for a month of 31 days, the angle ⁇ is 41 ° ( Figure 4).
  • this angle ⁇ is 31 °.
  • this angle ⁇ is 19 ° and when the large flip-flop occupies its maximum lifting position for a month of 28 days, the angle ⁇ is 10 °.
  • the value of this angle ⁇ and its variations as a function of the angular position of the large rocker 2 depends on the positioning of the first large rocker spring 24 on the date plate 1 relative to the pivot point 3 of the large rocker 2 and also positioning of the pin 24 with respect to this pivot axis 3 of the large rocker 2.
  • a second large rocker spring 27 is fixed on the date plate 1 in a position such that its flexible blade extends to rest substantially along a straight line passing through the axis of rotation 3 of the large rocker 2 and the pin 24 when the large rocker 2 is in its maximum lifting position for a month of 30 days.
  • This second large flip-flop is fixed on the face of the date plate 1 opposite to that where the first return spring 26 of this large flip-flop is fixed.
  • the pin large rocker 24 is through and through this board through an opening thereof.
  • the positioning of the second large rocker spring 27 is such that the lever arm with which the force of the spring is transmitted to the large rocker 2 is substantially constant so that the greater tension of the second spring as a function of the arming of the large flip-flop 2 compensates for the loss of torque provided by the first spring of large flip-flop 26 due to the decrease of the angle ⁇ .
  • the resulting torque delivered to the large rocker 2 by the two springs 26 and 27 is substantially constant regardless of the arming position of the large rocker 2 before its fall.
  • the combination of two large rocker springs, as described above, is a preferred embodiment of the actuating device of this large rocker during its fall because in addition to the characteristic characteristics of the springs can be played on their positions by compared to the pin through 24 of the large rocker and also with respect to the pivot axis of this large rocker to obtain a force acting on the pin 24 of the large rocker that is substantially constant during the fall of this large rocker whatever its degree of arming.
  • the angle ⁇ between the two blades of the return spring 26,27 of the large rocker 2 when they are at rest is of the order of 30 ° to 180 °, preferably of 40 ° to 70 °. °, for example 55 ° in the illustrated example.
  • this device for actuating the large single-spring rocker can be envisaged by obtaining the desired result by acting on the characteristics of the spring and on its positioning only, allowing a modification of the torque transmitted to the large rocker by function of the degree of arming of the big rocker by the reduction of the arm of lever of application of the force of the spring on the big rocker. It is thus possible with a single spring by adjusting its position relative to the large scale according to its characteristics, to obtain a fall torque of the large rocker that is substantially constant regardless of its degree of arming.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
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Abstract

The device for actuating in its drop a large rocker for controlling the display of an instantaneous date mechanism of a timepiece having a perpetual or secular date mechanism comprises a device for setting the large rocker to an angular value that is a function of the number of days in a given month and causing it to drop once per day, this large rocker driving a date indicator one step per day from the first to the penultimate day of a month and by one, two, three or four steps at the end of a month, depending on whether this month has thirty-one, thirty, twenty-nine or twenty-eight days. This device comprises at least one first return spring (26) for returning the large rocker (2) in its drops, its end resting permanently on a pin (24) belonging to the large rocker and being fixed to a date plate (1) in such a position relative to this pin (24) and to the pivot arbor (3) of the large rocker, that the lever arm applying the force of this first return spring (26) to the large rocker decreases as a function of the angular setting travel of this large rocker and therefore of said first return spring (26).

Description

Dispositif d'actionnement dans sa chute d'une grande bascule de commande de l'affichage d'un quantième instantané d'une pièce d'horlogerie munie d'un mécanisme de guantième perpétuel ou séculaire Device for actuating in its fall a large control lever for displaying an instantaneous calendar of a timepiece equipped with a perpetual or secular guantième mechanism
La présente invention a pour objet un dispositif d'actionnement dans sa chute d'une grande bascule de commande de l'affichage d'un guantième instantané d'une pièce d'horlogerie munie d'un mécanisme de quantième perpétuel ou séculaire telle qu'une montre bracelet ou de poche notamment.The subject of the present invention is an actuating device in its fall of a large control lever for displaying an instantaneous guantieme of a timepiece provided with a perpetual or secular calendar mechanism such as a wristwatch or pocket watch in particular.
Les mécanismes de quantième instantanés perpétuels ou séculaires comportent généralement une grande bascule commandant le passage d'un jour au suivant de l'affichage du quantième. Pour pouvoir afficher de façon instantanée le passage du dernier jour d'un mois au premier jour du mois suivant dans un mécanisme de quantième perpétuel ou séculaire, il faut que cette grande bascule de commande puisse faire avancer de façon instantanée l'affichage du quantième d'un, de deux, de trois ou de quatre pas pour permettre le passage du 31 d'un mois au 1er du mois suivant, du 30 d'un mois au 1er du mois suivant, du 29 février d'une année bissextile au 1er mars et du 28 février au premier mars des années non bissextiles.The perpetual or secular instantaneous calendar mechanisms generally comprise a large flip-flop controlling the passage from one day to the next of the date display. In order to be able to instantly display the transition from the last day of a month to the first day of the following month in a perpetual or secular calendar mechanism, this large control lever must be able to instantly advance the display of the date one, two, three or four steps to allow the 31st of a month to pass on the 1st of the following month, from the 30th of a month to the 1st of the following month, 29th of February of a leap year March 1 and February 28 to March 1 in non-leap years.
Cette grande bascule est armée contre l'action de son ressort de rappel pendant 24 heures par le mécanisme de quantième et libérée à minuit de manière que sa chute sous l'action de son ressort de rappel déplace l'affichage du quantième d'un pas à la fin des mois de 31 jours, de deux pas à la fin des mois de 30 jours, de trois pas à la fin des moins de 29 jours et de quatre pas à la fin des mois de 28 jours. Pour ce faire, l'amplitude de la course d'armage, et donc de la chute, de la grande bascule est déterminée par une came des mois entraînée à raison d'un tour par an et qui comporte une came secondaire des années bissextiles. Un tel mécanisme d'affichage de quantième est décrit par exemple dans la demande de brevet européen publiée EP 1734419. Dans ce document la grande bascule du mécanisme de quantième instantané commande non seulement l'indicateur du quantième mais également l'indicateur du nom des jours et l'indicateur des mois.This large rocker is armed against the action of its spring for 24 hours by the date mechanism and released at midnight so that its fall under the action of its return spring moves the display of the date of a step at the end of 31 days, two steps at the end of the 30 days, three steps at the end of the 29 days and four steps at the end of the 28 days. To do this, the amplitude of the arming stroke, and therefore of the fall, of the large rocker is determined by a cam of the months driven at a rate of one revolution per year and which has a secondary cam of the leap years. Such a date display mechanism is described for example in the published European patent application EP 1734419. In this document, the large scale of Instant date mechanism controls not only the date indicator but also the indicator of the name of the days and the indicator of the months.
Un tel mécanisme fonctionne parfaitement bien pour le passage du quantième des mois de 31 et 30 jours au premier jour du mois suivant. Par contre, il peut arriver que pour le passage du quantième des mois de 28 ou 29 jours au premier jour du mois suivant, l'indicateur de quantième actionné par la grande bascule lors de sa chute effectue un ou deux pas de trop, la force avec laquelle la grande bascule retombe étant très grande du fait de la grande tension de son ressort de rappel, la course de cette grande bascule étant importante pour provoquer le passage de trois ou quatre pas de l'indicateur de quantième. Il devient donc difficile de régler et d'ajuster ce mécanisme pour que d'une part, la force de la grande bascule soit suffisante pour effectuer le passage du 31 d'un mois au 1er du mois suivant, son ressort de rappel étant peu tendu dans ce cas et pour que cette force ne soit pas telle que l'indicateur de quantième, saute de quatre ou cinq pas alors qu'il devrait en effectuer trois ou quatre lors du passage des mois de 28 et 29 jours au mois suivant, le ressort de rappel de la grande bascule étant dans ce cas très tendu.Such a mechanism works perfectly well for the passage of the calendar of the months of 31 and 30 days to the first day of the following month. By cons, it can happen that for the passage of the calendar of the months of 28 or 29 days to the first day of the following month, the date indicator operated by the big rocker when it falls takes one or two steps too much, the force with which the large rocker falls is very large because of the high tension of its return spring, the race of this large scale is important to cause the passage of three or four steps of the date indicator. It therefore becomes difficult to adjust and adjust this mechanism so that on the one hand, the strength of the large rocker is sufficient to make the transition from 31 of a month to the 1 st of the following month, its return spring being few tense in this case and so that this force is not such that the date indicator jumps four or five steps while it should do three or four when the months of 28 and 29 days to the following month, the return spring of the large rocker being in this case very tight.
Le but de la présente invention est de réaliser un mécanisme de quantième perpétuel ou séculaire instantané qui évite l'inconvénient précité et soit donc totalement fiable et plus aisé à ajuster et régler.The object of the present invention is to provide an instant perpetual or secular calendar mechanism that avoids the aforementioned drawback and is therefore completely reliable and easier to adjust and adjust.
Le dessin annexé illustre schématiquement et à titre d'exemple une partie du mécanisme de quantième perpétuel d'une pièce d'horlogerie montrant notamment le dispositif d'actionnement de la grande bascule de ce mécanisme qui permet d'atteindre le but recherché. La figure 1 est une vue en plan partielle de dessus du mécanisme de quantième perpétuel instantané.The accompanying drawing illustrates schematically and by way of example a part of the perpetual calendar mechanism of a timepiece showing in particular the actuating device of the large scale of this mechanism that achieves the desired purpose. Figure 1 is a partial top plan view of the instantaneous perpetual calendar mechanism.
La figure 2 est une vue en plan partielle de dessous du mécanisme de quantième perpétuel instantané. La figure 3 est une vue schématique partielle de dessus du mécanisme de quantième perpétuel instantané où la grande bascule est en position de repos.Figure 2 is a partial bottom plan view of the instantaneous perpetual calendar mechanism. Figure 3 is a partial schematic top view of the instantaneous perpetual calendar mechanism where the large rocker is in the rest position.
La figure 4 est une vue similaire à la figure 3, la grande bascule étant dans sa position de levée maximale pour un mois de trente et un jours. La figure 5 est une vue similaire à la figure 3, la grande bascule étant dans sa position de levée maximale pour un mois de trente jours.Figure 4 is a view similar to Figure 3, the large rocker being in its maximum lifting position for a month of thirty-one days. Figure 5 is a view similar to Figure 3, the large rocker being in its maximum lift position for a month of thirty days.
La figure 6 est une vue similaire à la figure 3, la grande bascule étant dans sa position de levée maximale pour un mois de vingt neuf jours.Figure 6 is a view similar to Figure 3, the large rocker being in its maximum lifting position for a month of twenty nine days.
La figure 7 est une vue similaire à la figure 3, la grande bascule étant dans sa position de levée maximale pour un mois de vingt huit jours.Figure 7 is a view similar to Figure 3, the large rocker being in its maximum lift position for a month of twenty eight days.
Le mécanisme de quantième perpétuel ou séculaire instantané selon la présente invention est dans son architecture générale semblable à celui décrit dans la demande de brevet européen EP 1734419 et diffère de celui-ci seulement en ce qui concerne le dispositif d'actionnement de sa grande bascule dans sa chute journalière. Ainsi, le mécanisme de quantième perpétuel instantané lui- même ne sera décrit dans ce qui suit que de manière succincte et dans la mesure nécessaire à la compréhension du dispositif d'entraînement de sa grande bascule dans sa chute. Notamment la liaison cinématique entre la grande bascule et l'indicateur des jours de la semaine et des mois n'est pas illustrée ou décrite, celle- ci étant décrite en détail dans le document cité plus haut.The perpetual or secular instantaneous calendar mechanism according to the present invention is in its general architecture similar to that described in the European patent application EP 1734419 and differs from it only as regards the device for actuating its large flip-flop in his daily fall. Thus, the perpetual perpetual calendar mechanism itself will be described below only briefly and to the extent necessary for the understanding of the drive device of its large latch in its fall. In particular, the kinematic connection between the large rocker and the indicator of the days of the week and months is not illustrated or described, this being described in detail in the document cited above.
Le mécanisme de quantième perpétuel instantané illustré comporte une planche ou platine de quantième 1 , sur laquelle est pivotée une grande bascule 2 autour d'un axe 3. Cette grande bascule 2 comporte un cliquet 32 entraînant par une cinématique connue l'indicateur de quantième, et le cas échéant les indicateurs du jour de la semaine et du mois, par le doigt des jours 44 respectivement le doigt des mois 38.The instantaneous perpetual calendar mechanism illustrated comprises a date plate or plate 1, on which is pivoted a large rocker 2 about an axis 3. This large rocker 2 comprises a pawl 32 driving the date indicator by a known kinematic, and if necessary the indicators of the day of the week and the month, by the finger of the days 44 respectively the finger of the months 38.
En position de repos la grande bascule 2 repose contre une goupille 5 chassée dans la platine 1 sous l'action du dispositif d'actionnement de la grande bascule qui sera décrit dans ce qui suit. L'armage de la grande bascule 2 s'effectue de façon connue à l'aide d'une came de quantième 6 solidaire d'une roue de quantième 7 en prise avec un renvoi de quantième 8 solidaire de la roue des heures d'un mouvement d'horlogerie. Cette came de quantième 6 est entraînée à raison d'une révolution par vingt quatre heures.In the rest position the large rocker 2 rests against a pin 5 driven into the plate 1 under the action of the actuating device of the large rocker which will be described in what follows. The arming of the large rocker 2 is carried out in a known manner using a date cam 6 integral with a date wheel 7 meshing with a date wheel 8 secured to the hour wheel of a wheel. clockwork movement. This date cam 6 is driven at the rate of one revolution per twenty four hours.
Un râteau 9 est pivoté sur l'axe 3 de la grande bascule 2 et comporte d'une part un palpeur 10 coopérant avec la came de quantième 6 et d'autre part une denture 11 coopérant avec un levier des mois 12. Ce levier des mois 12 est pivoté en 13 sur la grande bascule 2 et est relié au râteau 9 par un ressort 14. La première des extrémités 15 du levier des mois 12 coopère avec la denture 11 du râteau 9 et la seconde extrémité 16 de ce levier des mois 12 coopère avec une came des mois 17 entraînée en rotation par le doigt des mois 38 qui comporte à son extrémité un crochet 43, articulé sur la grande bascule 2, lors de la chute de celle-ci, à raison d'une révolution par an. Cette fonction sera décrite plus précisément ultérieurement. La périphérie de cette came des mois 17, coopérant avec la seconde extrémité 16 du levier des mois 12 comporte des bossages 18 correspondant aux mois de trente et un jours et des creux 19 correspondant aux mois de trente jours. Cette came des mois comporte encore une came bissextile 20 entraînée à raison de un quart de tour par an et présentant trois premières faces 21 équidistantes de son axe de rotation 22 et une seconde face 23 située à une distance plus grande de l'axe de rotation 22 que les trois premières faces 21 de cette came bissextile. Lorsque l'une des trois premières faces 21 se situe dans une échancrure de la came des mois 17 correspondant au mois de février, celle-ci détermine la position que doit occuper le levier des mois 12 pour les mois de février de vingt huit jours. Lorsque la seconde face 23 est située dans ladite échancrure de la came des mois, elle détermine la position du levier des mois pour le mois de février des années bissextiles. Ce mécanisme permet d'armer chaque jour la grande bascule 2 d'une amplitude correspondant au mois en cours puis à minuit de la laisser retomber sous l'action de son dispositif d'actionnement jusque dans sa position de repos déterminée par la goupille 5. Pendant cette chute journalière de la grande bascule 2, son cliquet 32 entraîne instantanément chaque jour l'indicateur de quantième d'un pas, sauf le dernier jour du mois où cet indicateur de quantième est entraîné instantanément du nombre de pas nécessaire pour le positionner sur le premier du mois suivant comme cela est décrit notamment dans le document EP 1734419.A rake 9 is pivoted on the axis 3 of the large rocker 2 and comprises on the one hand a feeler 10 cooperating with the date cam 6 and on the other hand a toothing 11 cooperating with a lever 12 months. month 12 is pivoted at 13 on the large rocker 2 and is connected to the rake 9 by a spring 14. The first end 15 of the lever 12 months cooperates with the toothing 11 of the rake 9 and the second end 16 of the lever months 12 cooperates with a cam 17 months driven in rotation by the finger of the month 38 which has at its end a hook 43, articulated on the large rocker 2, during the fall thereof, at a rate of one revolution per year . This function will be described more precisely later. The periphery of this cam of the months 17, cooperating with the second end 16 of the lever 12 months includes bosses 18 corresponding to the month of thirty-one days and troughs 19 corresponding to the month of thirty days. This cam months also comprises a leap cam 20 driven quarter turn per year and having three first faces 21 equidistant from its axis of rotation 22 and a second face 23 located at a greater distance from the axis of rotation 22 as the first three faces 21 of this leap cam. When one of the first three faces 21 is in a notch of the cam 17 months corresponding to the month of February, it determines the position that must occupy the lever months 12 for the month of February twenty-eight days. When the second face 23 is located in said notch of the cam months, it determines the position of the month lever for the month of February leap years. This mechanism makes it possible to arm each day the large rocker 2 with an amplitude corresponding to the current month and then at midnight to let it fall back under the action of its actuating device up to its rest position determined by the pin 5. During this daily fall of the large rocker 2, its pawl 32 instantly drives the date indicator every day of a step, except the last day of the month when this date indicator is instantly driven the number of steps necessary to position it on the first of the following month as described in particular in EP 1734419.
Ainsi, lors d'une phase inactive, le levier des mois 12 et la grande bascule 2 occupent journellement juste après minuit une position de repos pendant laquelle le levier des mois 12 relève le nombre de jours du mois en cours. Pendant cette phase inactive le râteau 11 effectue une course à vide sur une distance prédéterminée avant d'entrer en contact avec le levier des mois 12, cette distance active étant variable et en fonction du nombre de jours du mois en cours.Thus, during an inactive phase, the lever of the months 12 and the big rocker 2 occupy daily just after midnight a rest position during which the lever of the months 12 raises the number of days of the current month. During this inactive phase, the rake 11 performs a no-load run for a predetermined distance before coming into contact with the lever of the months 12, this active distance being variable and depending on the number of days of the current month.
Pendant la phase active qui suit, la grande bascule 2 est entraînée par l'intermédiaire du levier des mois 12 suivant un mouvement de rotation horaire dont l'amplitude est en fonction dudit nombre de jours du mois en cours. Ensuite la grande bascule 2 effectue une chute en sens inverse à la fin de cette phase active en entraînant l'ensemble des mécanismes d'affichage.During the active phase that follows, the large rocker 2 is driven via the lever of months 12 in a clockwise rotational movement whose amplitude is based on said number of days of the current month. Then the large flip-flop 2 makes a fall in the opposite direction at the end of this active phase by driving all the display mechanisms.
Le mécanisme d'affichage de quantième comprend un indicateur de quantième constitué par une pièce annulaire 30 rotative montée tournante sur la planche de calendrier 1 grâce à des galets.The date display mechanism includes a date indicator consisting of a rotating annular piece rotatably mounted on the calendar board 1 by means of rollers.
Cette pièce annulaire 30 porte des inscriptions de quantième 1 à 31 sur sa face frontale. Ces inscriptions sont de grande taille et visibles dans un guichet de quantième qui est d'une taille plus grande que le guichet des mois et situé à 12 heures. La pièce annulaire 30 est munie sur sa face postérieure d'une denture qui a la particularité d'être intérieure et non traversante sous forme de creusures 31.This annular part 30 has date inscriptions 1 to 31 on its front face. These inscriptions are large and visible in a date window that is larger than the window of the months and located at 12 o'clock. The annular piece 30 is provided on its posterior face with a set of teeth which has the particularity of being internal and not traversing in the form of recesses 31.
Ainsi, les inscriptions 1 à 31 sur la face antérieure peuvent être de grande taille pour une largeur donnée de la pièce annulaire 30. Un cliquet de grande bascule 32 est monté pivotant sur la grande bascule 2 grâce à un axe 33 et agencé de façon à coopérer avec la denture 31 de la pièce annulaire 30 pour faire sauter journellement l'indicateur de quantième d'un seul pas lors de la chute de la grande bascule 2, quelle que soit l'amplitude du mouvement de rotation de la grande bascule 2.Thus, the inscriptions 1 to 31 on the front face may be large for a given width of the annular piece 30. A large flip-flop 32 is pivotally mounted on the large flip-flop 2 by means of an axis 33 and arranged to cooperate with the toothing 31 of the annular piece 30 to blow up the date indicator daily with a single step during the fall of the big rocker 2, whatever the amplitude of the rotational movement of the big rocker 2.
Un ressort de rappel 34 monté sur la grande bascule 2 est agencé pour solliciter, dans la position de repos, le cliquet de grande bascule 32 contre une goupille 35 chassée dans la grande bascule 2.A return spring 34 mounted on the large rocker 2 is arranged to urge, in the rest position, the big rocker pawl 32 against a pin 35 driven into the large rocker 2.
Le mécanisme d'affichage de quantième comprend en outre un sautoir de quantième 36 agencé de façon à coopérer avec la denture 31 de la pièce annulaire 30 grâce à l'action d'un ressort 37. Du fait de la place disponible entre deux dents de la denture 31 , ce sautoir 36 possède trois flancs fonctionnels.The date display mechanism further comprises a date jumper 36 arranged to cooperate with the toothing 31 of the annular piece 30 by the action of a spring 37. Due to the available space between two teeth of the toothing 31, this jumper 36 has three functional flanks.
Deux flancs sont orientés pour repositionner la pièce annulaire 30 avec un angle de glissement favorable et constant. Un troisième flanc est agencé de manière que la direction de la force appliquée sur les dents de la denture 31 passe par le centre de l'axe de rotation du sautoir de quantième 36.Two sidewalls are oriented to reposition the annular piece 30 with a favorable and constant slip angle. A third sidewall is arranged in such a way that the direction of the force applied to the teeth of the toothing 31 passes through the center of the axis of rotation of the date jumper 36.
Le mécanisme de calendrier présente en outre un doigt des mois 38 qui est articulé sur la grande bascule 2. Ce doit est muni dans sa partie médiane d'une portion en saillie sous forme d'une goupille 39 agencée pour coopérer avec une périphérie extérieure 40 formant un bord cylindrique de la denture 31 et avec une encoche 41 prévue dans cette périphérie. Le doigt des mois présente à cet effet un prolongement élastique 42 destiné à solliciter la goupille 39 contre ladite périphérie 40 et, en fin de mois, dans l'encoche 41 qui est indexée avec les dents de la denture 31 de l'indicateur de quantième. Lorsque la grande bascule 2 se lève, la goupille 39 va tomber le dernier jour du mois dans l'encoche 41 juste avant minuit. Ensuite le doigt des mois 38 entraîné par la chute de la grande bascule 2 va faire sauter l'indicateur de quantième 30 de quatre pas pour le 28 février, de trois pas pour le 29 février et de deux pas pour un mois de 30 jours, conformément à l'amplitude du mouvement de la grande bascule 2 déterminée par la position du levier des mois 12 sur la came des mois 17 lors de ladite position de repos. Plus la grande bascule 2 se lève longtemps, plus elle va chercher loin l'encoche 41 avec le doigt des mois 38 et plus elle va faire sauter un nombre de pas important à l'indicateur de quantième. La goupille 39 du doigt des mois 38 a donc la fonction de réaliser le rattrapage des jours en fin de mois sur l'indicateur de quantième.The calendar mechanism also has a finger of months 38 which is articulated on the large rocker 2. This must is provided in its median portion of a projecting portion in the form of a pin 39 arranged to cooperate with an outer periphery 40 forming a cylindrical edge of the toothing 31 and with a notch 41 provided in this periphery. The finger months has for this purpose an elastic extension 42 for biasing the pin 39 against said periphery 40 and, at the end of the month, in the notch 41 which is indexed with the teeth of the toothing 31 of the date indicator . When the large rocker 2 rises, the pin 39 will fall on the last day of the month in the notch 41 just before midnight. Then the finger of the months 38 driven by the fall of the big rocker 2 will blow the date indicator 30 four steps for February 28, three steps for February 29 and two steps for a month of 30 days, according to the amplitude of the movement of the large flip-flop 2 determined by the position of the lever of the months 12 on the cam of the months 17 during said rest position. The bigger the big rocker 2 gets up a long time, the farther it goes to get the notch 41 with the finger of the months 38 and the more it will blow a number of important steps to the date indicator. The pin 39 of the finger of the months 38 thus has the function of making up for the days at the end of the month on the date indicator.
Pour le saut des mois, on trouve à l'extrémité du doigt des mois 38 un crochet 43. Pour tous les jours sauf le dernier jour du mois, le doigt des mois 38 et son crochet 43 restent levés grâce à la goupille 39. Le crochet 43 passe ainsi à côté d'une étoile des mois sans l'entraîner lors de la chute de la grande bascule 2 à minuit.For the jump of the months, one finds at the end of the finger of the months 38 a hook 43. For all the days except the last day of the month, the finger of the months 38 and its hook 43 remain raised thanks to the pin 39. Hook 43 thus passes next to a star of the months without dragging it at the fall of the big rocker 2 at midnight.
Par contre lors du dernier jour du mois à minuit, la goupille 39 tombe dans l'encoche 41 et le crochet 43 se déplace sur une courbe telle qu'il entraîne une dent de l'étoile des mois sur un pas lors de la chute de la grande bascule 2 à minuit. La came des mois 17 est également avancée d'un pas.On the other hand, during the last day of the month at midnight, the pin 39 falls in the notch 41 and the hook 43 moves on a curve such that it causes a tooth of the star of the months on a step during the fall of the big rocker 2 at midnight. The cam of the months 17 is also advanced by one step.
Le mécanisme d'affichage des jours est également commandé par la grande bascule 2 et comprend à cet effet un doigt des jours 44 qui est monté pivotant sur la grande bascule 2 grâce au même axe que le doigt des mois 38. Le doigt des jours 44 est destiné à faire sauter journellement une étoile des jours 45 d'un pas quelle que soit la course de la grande bascule 2 lors de sa chute à minuit.The day display mechanism is also controlled by the large flip-flop 2 and comprises for this purpose a day finger 44 which is pivotally mounted on the large rocker 2 by the same axis as the finger of the month 38. The finger of days 44 is designed to blow a 45-day star every day, regardless of the race of the big rocker 2 when it falls at midnight.
Cette étoile des jours 45 est solidaire d'un disque des jours (non illustré) portant des inscriptions des jours visibles dans un guichet.This star of days 45 is attached to a disc of the days (not illustrated) carrying inscriptions of the days visible in a window.
Dans les dispositifs existants et notamment celui décrit dans le document précité, la grande bascule 2 est entraînée dans sa chute, lorsque le palpeur 10 tombe de la partie haute de la came de quantième 6 par un ressort à lame. Plus la course de la grande bascule est grande, plus la force qui lui est appliquée, par ce ressort, est grande et plus sa chute se fait violemment avec le risque pour les mois de vingt neuf ou vingt huit jours notamment, que l'indicateur de quantième soit entraîné si violemment que de par son inertie il passe un ou deux pas supplémentaire, ce qui est inadmissible. C'est pourquoi dans le dispositif décrit dans le document précité il est nécessaire d'une part, de bien choisir et régler le ressort de rappel de la grande bascule, mais de plus de prévoir un régulateur et dissipateur d'énergie de façon à régler et modérer la vitesse de la chute de la grande bascule.In the existing devices and in particular that described in the aforementioned document, the large latch 2 is driven in its fall, when the probe 10 falls from the upper part of the date cam 6 by a leaf spring. The larger the race of the big rocker, the greater the force applied to it, by this spring, and the more its fall is violently with the risk for the months of twenty nine or twenty eight days in particular, that the indicator of date is driven so violently that its inertia passes one or two steps additional, which is inadmissible. Therefore in the device described in the aforementioned document it is necessary firstly to choose and adjust the return spring of the large scale, but also to provide a regulator and energy dissipator to adjust and moderate the speed of the fall of the big rocker.
Le but de la présente invention est de permettre la suppression de ce régulateur de la vitesse de chute de la grande bascule qui est complexe tout en évitant tout disfonctionnement du mécanisme de quantième en remplaçant le ressort de rappel de la grande bascule par un dispositif d'actionnement particulier de cette grande bascule.The object of the present invention is to allow the removal of this regulator of the falling speed of the large scale which is complex while avoiding any malfunction of the date mechanism by replacing the return spring of the large scale by a device of particular actuation of this large rocker.
Ce dispositif d'actionnement ou d'entraînement de la grande bascule 2 dans sa chute comporte une goupille traversante 24 chassée dans l'extrémité libre 25 de la grande bascule 2. Ce dispositif d'actionnement comporte encore un premier ressort de grande bascule 26 fixé sous la planche de calendrier 1 et constamment en appui sur la goupille traversante 24 de la grande bascule. Ainsi, comme on le voit sur les figures 3 à 7, quelle que soit la position angulaire de la bascule, au repos, figure 1 , ou à son armage maximum d'un jour d'un mois de février à vingt huit jours, figure 7, ce premier ressort de rappel 26 exerce toujours une force sur la goupille 24. Ce premier ressort de rappel permet donc de maintenir la grande bascule 2 en position de repos entre ses phases actives d'armage et de chute.This device for actuating or driving the large rocker 2 in its fall has a pin 24 driven into the free end 25 of the large rocker 2. This actuating device further comprises a first large spring 26 fixed under the calendar board 1 and constantly resting on the pin 24 through the large rocker. Thus, as can be seen in FIGS. 3 to 7, regardless of the angular position of the rocker, at rest, FIG. 1, or at its maximum armor from one day from February to twenty-eight days, FIG. 7, this first return spring 26 always exerts a force on the pin 24. This first return spring thus allows to maintain the large rocker 2 in the rest position between its active phases of arming and falling.
Comme on le voit sur la figure 3 illustrant la grande bascule 2 en position de repos en butée contre la goupille fixe 5 l'angle α compris entre une droite a reliant la goupille traversante 24 et l'axe de pivotement 3 de la grande bascule 2 et une perpendiculaire b à la lame ressort du premier ressort de grande bascule 26 est dans cet exemple de 56°. Cet angle α pourrait présenter une autre valeur, il détermine en fait le bras de levier avec lequel le premier ressort de grande bascule 26 agit sur ladite grande bascule 2. Comme on le voit très clairement sur les figures 4 à 7, cet angle α varie en fonction de la position angulaire de la grande bascule 2. Lorsque cette grande bascule 2 est en position de levée maximale pour un mois de 31 jours, l'angle α est de 41° (figure 4). Lorsque la grande bascule 2 est en position de levée maximale pour un mois de 30 jours (figure 5) cet angle α est de 31°. Lorsque la grande bascule 2 est en position de levée maximale pour un mois de 29 jours cet angle α est de 19° et lorsque la grande bascule occupe sa position de levée maximale pour un mois de 28 jours l'angle α est de 10°. La valeur de cet angle α et ses variations en fonction de la position angulaire de la grande bascule 2 dépend du positionnement du premier ressort de grande bascule 24 sur la planche de quantième 1 par rapport au point de pivotement 3 de la grande bascule 2 et également du positionnement de la goupille traversante 24 par rapport à cet axe de pivotement 3 de la grande bascule 2.As can be seen in FIG. 3 illustrating the large rocker 2 in the rest position abutting against the fixed pin 5, the angle α comprised between a straight line a connecting the through pin 24 and the pivot axis 3 of the large rocker 2 and a perpendicular b to the blade spring of the first spring of big rocker 26 is in this example of 56 °. This angle α could have another value, it determines in fact the lever arm with which the first large flip-flop spring 26 acts on said large flip-flop 2. As can be seen very clearly in FIGS. 4 to 7, this angle α varies as a function of the angular position of the large rocker 2. When this large rocker 2 is in the maximum lift position for a month of 31 days, the angle α is 41 ° (Figure 4). When the large rocker 2 is in the maximum lift position for a month of 30 days (FIG. 5), this angle α is 31 °. When the large flip-flop 2 is in the maximum emergence position for a month of 29 days, this angle α is 19 ° and when the large flip-flop occupies its maximum lifting position for a month of 28 days, the angle α is 10 °. The value of this angle α and its variations as a function of the angular position of the large rocker 2 depends on the positioning of the first large rocker spring 24 on the date plate 1 relative to the pivot point 3 of the large rocker 2 and also positioning of the pin 24 with respect to this pivot axis 3 of the large rocker 2.
Ces deux positionnements, du premier ressort de grande bascule 24 et de la goupille traversante sont déterminés pour que plus la levée de la grande bascule 2 est grande, plus l'angle α soit faible. En pratique, on détermine ces positionnements de manière à ce que malgré que la tension du ressort, et donc sa force, augmente en fonction du déplacement angulaire de la grande bascule lors de son armage, le couple transmis à cette grande bascule 2 lorsqu'elle est en position de levée maximale pour un mois de 28 jours soit trop faible pour assurer son retour en position de repos lorsque le palpeur 10 du râteau 9 tombe de la partie haute de la came de quantième 6.These two positions, the first spring of the big rocker 24 and the pin through are determined so that the higher the lifting of the large rocker 2, the higher the angle α is low. In practice, these positions are determined so that, even though the spring tension, and therefore its force, increases as a function of the angular displacement of the large rocker during its arming, the torque transmitted to this large rocker 2 when is in the maximum lifting position for a month of 28 days is too low to ensure its return to the rest position when the probe 10 of the rake 9 falls from the top of the date cam 6.
Pour assurer la chute de la grande bascule 2 à partir de n'importe laquelle de ses positions d'armage, un second ressort de grande bascule 27 est fixé sur la planche de quantième 1 dans une position telle que sa lame flexible s'étende au repos sensiblement suivant une droite passant par l'axe de rotation 3 de la grande bascule 2 et la goupille traversante 24 lorsque la grande bascule 2 est dans sa position de levée maximale pour un mois de 30 jours. Ce second ressort 27 de grande bascule est fixé sur la face de la planche de quantième 1 opposée à celle où le premier ressort de rappel 26 de cette grande bascule est fixé. La goupille de grande bascule 24 est traversante et traverse cette planche par une ouverture de celle-ci. De cette façon, la chute de la grande bascule 2, à partir de ses positions de levée maximale des mois de 31 jours et de 30 jours est assurée uniquement grâce au premier ressort de grande bascule 26. La force du ressort 26 augmente entre ces deux positions mais le bras de levier utilisé diminue de sorte que le couple transmis à la grande bascule 2 est sensiblement constant lors de la chute de la grande bascule à partir d'une de ces deux positions.To ensure the fall of the large rocker 2 from any of its arming positions, a second large rocker spring 27 is fixed on the date plate 1 in a position such that its flexible blade extends to rest substantially along a straight line passing through the axis of rotation 3 of the large rocker 2 and the pin 24 when the large rocker 2 is in its maximum lifting position for a month of 30 days. This second large flip-flop is fixed on the face of the date plate 1 opposite to that where the first return spring 26 of this large flip-flop is fixed. The pin large rocker 24 is through and through this board through an opening thereof. In this way, the fall of the large flip-flop 2 from its maximum lifting positions of 31 days and 30 days is ensured only by the first large flip-flop spring 26. The force of the spring 26 increases between these two positions but the lever arm used decreases so that the torque transmitted to the large flip-flop 2 is substantially constant during the fall of the large flip-flop from one of these two positions.
La chute de la grande bascule 2 à partir de ses positions de levée maximale pour les mois de 29 et 28 jours est assurée par l'action conjointe des deux ressorts de grande bascule 26, 27.The fall of the large rocker 2 from its maximum lift positions for the months of 29 and 28 days is ensured by the joint action of the two large rocking springs 26, 27.
Le positionnement du second ressort de grande bascule 27 est tel que le bras de levier avec lequel la force du ressort est transmise à la grande bascule 2 est pratiquement constante de sorte que la plus grande tension du second ressort en fonction de l'armement de la grande bascule 2 compense la perte de couple fournie par le premier ressort de grande bascule 26 du fait de la diminution de l'angle α. Ainsi, le couple résultant délivré à la grande bascule 2 par les deux ressorts 26 et 27 est sensiblement constant quelle que soit la position d'armement de la grande bascule 2 avant sa chute.The positioning of the second large rocker spring 27 is such that the lever arm with which the force of the spring is transmitted to the large rocker 2 is substantially constant so that the greater tension of the second spring as a function of the arming of the large flip-flop 2 compensates for the loss of torque provided by the first spring of large flip-flop 26 due to the decrease of the angle α. Thus, the resulting torque delivered to the large rocker 2 by the two springs 26 and 27 is substantially constant regardless of the arming position of the large rocker 2 before its fall.
De cette manière il n'est plus besoin d'utiliser de dispositif régulateur et dissipateur de l'énergie de chute de la grande bascule et on évite tout de même tout risque de sauts intempestifs des organes indicateurs du quantième, du jour de la semaine et éventuellement du mois.In this way it is no longer necessary to use a regulating device and dissipator of the fall energy of the large scale and avoids any risk of accidental jumps indicator organs of the day, the day of the week and possibly of the month.
La combinaison de deux ressorts de grande bascule, telle que décrite ci- dessus, constitue un mode de réalisation préféré du dispositif d'actionnement de cette grande bascule pendant sa chute car en plus de la caractéristique propre des ressorts on peut jouer sur leurs positionnements par rapport à la goupille traversante 24 de la grande bascule et également par rapport à l'axe de pivotement de cette grande bascule pour obtenir une force agissant sur cette goupille traversante 24 de la grande bascule qui soit sensiblement constante au cours de la chute de cette grande bascule quel que soit son degré d'armement. L'angle β compris entre les deux lames du ressort de rappel 26,27 de la grande bascule 2 lorsqu'ils sont au repos (figure 3) est de l'ordre de 30° à 180°, de préférence de 40° à 70°, par exemple 55° dans l'exemple illustré.The combination of two large rocker springs, as described above, is a preferred embodiment of the actuating device of this large rocker during its fall because in addition to the characteristic characteristics of the springs can be played on their positions by compared to the pin through 24 of the large rocker and also with respect to the pivot axis of this large rocker to obtain a force acting on the pin 24 of the large rocker that is substantially constant during the fall of this large rocker whatever its degree of arming. The angle β between the two blades of the return spring 26,27 of the large rocker 2 when they are at rest (FIG. 3) is of the order of 30 ° to 180 °, preferably of 40 ° to 70 °. °, for example 55 ° in the illustrated example.
Toutefois, une variante de ce dispositif d'actionnement de la grande bascule à un seul ressort peut être envisagée en obtenant le résultat désiré en agissant sur les caractéristiques du ressort et sur son positionnement seulement, permettant une modification du couple transmis à la grande bascule en fonction du degré d'armage de la grande bascule par la réduction du bras de levier d'application de la force du ressort sur la grande bascule. On peut ainsi avec un seul ressort en ajustant sa position par rapport à la grande bascule en fonction de ses caractéristiques, obtenir un couple de chute de la grande bascule qui soit sensiblement constant quel que soit son degré d'armage. However, a variant of this device for actuating the large single-spring rocker can be envisaged by obtaining the desired result by acting on the characteristics of the spring and on its positioning only, allowing a modification of the torque transmitted to the large rocker by function of the degree of arming of the big rocker by the reduction of the arm of lever of application of the force of the spring on the big rocker. It is thus possible with a single spring by adjusting its position relative to the large scale according to its characteristics, to obtain a fall torque of the large rocker that is substantially constant regardless of its degree of arming.

Claims

REVENDICATIONS
1. Dispositif d'actionnement dans sa chute d'une grande bascule de commande de l'affichage d'un quantième instantané d'une pièce d'horlogerie munie d'un quantième perpétuel ou séculaire comportant un dispositif d'armage de la grande bascule d'une valeur angulaire, fonction du nombre de jours d'un mois donné et commandant sa chute une fois par jour, cette grande bascule entraînant un indicateur de quantième d'un pas par jour du premier à l'avant dernier jour d'un mois et de un, deux, trois ou quatre pas à la fin d'un mois, suivant que ce mois comporte, trente et un, trente, vingt neuf, ou vingt huit jours, caractérisé par le fait qu'il comporte au moins un premier ressort de rappel (26) de la grande bascule (2) dans ses chutes dont l'extrémité s'appuie en permanence sur une goupille (24) de la grande bascule et qui est fixé sur une planche de quantième (1) dans une position telle par rapport à cette goupille (24) et à l'axe de pivotement (3) de la grande bascule, que le bras de levier d'application de la force de ce premier ressort de rappel (26) sur la grande bascule diminue en fonction de la course angulaire d'armage de cette grande bascule et donc dudit premier ressort de rappel (26).1. Device for actuating in its fall a large flip-flop for displaying an instantaneous calendar of a timepiece provided with a perpetual or secular calendar comprising a device for arming the large flip-flop an angular value, based on the number of days in a given month and controlling its fall once a day, this large scale resulting in a date indicator of a step per day from the first to the penultimate day of a months and one, two, three or four steps at the end of a month, depending on whether that month comprises thirty-one, thirty, twenty-nine, or twenty-eight days, characterized by the fact that it includes at least one first return spring (26) of the large rocker (2) in its falls whose end permanently rests on a pin (24) of the large rocker and which is fixed on a date plate (1) in a position relative to this pin (24) and to the pivot axis (3) of the large rocker, that the lever arm for applying the force of this first return spring (26) on the large rocker decreases as a function of the angular arming stroke of this large rocker and therefore of said first return spring (26).
2. Dispositif selon la revendication 1 , caractérisé par le fait qu'il comporte un second ressort de rappel (27) de la grande bascule (2) également fixé sur la planche de quantième (1) dans une position telle que son extrémité n'entre en contact avec la goupille (24) de la grande bascule2. Device according to claim 1, characterized in that it comprises a second return spring (27) of the large rocker (2) also fixed on the date plate (1) in a position such that its end n ' comes in contact with the pin (24) of the big rocker
(2) uniquement lorsque celle-ci est dans une position angulaire d'armage dépassant celle qu'elle occupe lors les mois de trente et un jours. (2) only when the latter is in an angular position of armor exceeding that which it occupies during the months of thirty-one days.
3. Dispositif selon la revendication 2, caractérisé par le fait que les premier (26) et second (27) ressorts de rappels de la grande bascule (2) sont fixés chacun sur une face opposée de la planche de quantième (1) et que la goupille (24) de la grande bascule traverse cette planche de quantième (1) par une ouverture de celle-ci.3. Device according to claim 2, characterized in that the first (26) and second (27) recoil springs of the large rocker (2) are each fixed on an opposite face of the date plate (1) and that the pin (24) of the large flip-flop passes through this date plate (1) through an opening thereof.
4. Dispositif selon l'une des revendications 2 ou 3, caractérisé par le fait que le second ressort de rappel (27) de la grande bascule (2) entre en contact avec la goupille (24) de celle-ci lorsque cette grande bascule atteint sa position d'armage qu'elle occupe les mois de trente jours.4. Device according to one of claims 2 or 3, characterized in that the second return spring (27) of the large flip-flop (2) comes into contact with the pin (24) thereof when the large flip-flop reaches its position of arming that it occupies the months of thirty days.
5. Dispositif selon l'une des revendications 2 à 4, caractérisé par le fait que l'angle (β) formé entre les lames des ressorts de rappel (26,27) de la grande bascule (2) lorsqu'ils sont au repos est compris entre 30° et5. Device according to one of claims 2 to 4, characterized in that the angle (β) formed between the blades of the return springs (26,27) of the large rocker (2) when at rest is between 30 ° and
180°, de préférence entre 40° et 70°.180 °, preferably between 40 ° and 70 °.
6. Dispositif selon l'une des revendications 2 à 5, caractérisé par le fait que le bras de levier avec lequel la force du second ressort de rappel (27) de la grande bascule agit sur celle-ci est sensiblement constant quel que soit l'armage de la grande bascule. 6. Device according to one of claims 2 to 5, characterized in that the lever arm with which the force of the second return spring (27) of the large scale acts on it is substantially constant regardless of the arming of the big rocker.
PCT/IB2008/001422 2007-07-04 2008-06-04 Device for actuating in its drop a large rocker for controlling the display of an instantaneous date mechanism of a timepiece having a perpetual or secular date mechanism WO2009004423A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08762763.4A EP2160659B1 (en) 2007-07-04 2008-06-04 Device for actuating in its drop a large rocker for controlling the display of an instantaneous date mechanism of a timepiece having a perpetual or secular date mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01080/07 2007-07-04
CH10802007A CH705710B1 (en) 2007-07-04 2007-07-04 An actuator in the fall of great control rocker displaying an instantaneous a timepiece equipped with a perpetual calendar mechanism or secular.

Publications (2)

Publication Number Publication Date
WO2009004423A2 true WO2009004423A2 (en) 2009-01-08
WO2009004423A3 WO2009004423A3 (en) 2009-04-30

Family

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Application Number Title Priority Date Filing Date
PCT/IB2008/001422 WO2009004423A2 (en) 2007-07-04 2008-06-04 Device for actuating in its drop a large rocker for controlling the display of an instantaneous date mechanism of a timepiece having a perpetual or secular date mechanism

Country Status (3)

Country Link
EP (1) EP2160659B1 (en)
CH (1) CH705710B1 (en)
WO (1) WO2009004423A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2503411A1 (en) * 2011-03-22 2012-09-26 Montres Breguet SA Single-ratchet instant perpetual calendar

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1734419A1 (en) * 2005-06-14 2006-12-20 Patek Philippe S.A. Timepiece with calendar mechanismus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1734419A1 (en) * 2005-06-14 2006-12-20 Patek Philippe S.A. Timepiece with calendar mechanismus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2503411A1 (en) * 2011-03-22 2012-09-26 Montres Breguet SA Single-ratchet instant perpetual calendar
CN102692864A (en) * 2011-03-22 2012-09-26 蒙特雷布勒盖股份有限公司 Single-ratchet instant perpetual calendar
US8711658B2 (en) 2011-03-22 2014-04-29 Montres Breguet S.A. Instantaneous single click perpetual date mechanism

Also Published As

Publication number Publication date
EP2160659B1 (en) 2014-01-22
CH705710B1 (en) 2013-05-15
WO2009004423A3 (en) 2009-04-30
EP2160659A2 (en) 2010-03-10

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