EP4325303A1 - Perpetual date mechanism with concentric cams - Google Patents
Perpetual date mechanism with concentric cams Download PDFInfo
- Publication number
- EP4325303A1 EP4325303A1 EP22190621.7A EP22190621A EP4325303A1 EP 4325303 A1 EP4325303 A1 EP 4325303A1 EP 22190621 A EP22190621 A EP 22190621A EP 4325303 A1 EP4325303 A1 EP 4325303A1
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- EP
- European Patent Office
- Prior art keywords
- cam
- month
- wheel
- year
- rocker
- 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.)
- Pending
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- 230000007246 mechanism Effects 0.000 title claims abstract description 56
- 210000003323 beak Anatomy 0.000 claims description 20
- 239000000523 sample Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000007704 transition Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
- G04B19/25353—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
- G04B19/2536—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 automatically corrected at the end of months having less than 31 days
Definitions
- the present invention relates to a perpetual calendar mechanism, for a watch movement, comprising a month cam and a year cam nested in the month cam in a concentric manner.
- the invention also relates to a timepiece, in particular a wristwatch, comprising a watch movement equipped with the perpetual calendar mechanism with concentric cams.
- Perpetual calendar mechanisms therefore most often have a complex and bulky construction, which can have a significant impact on the size of the watch case incorporating a watch movement equipped with such a mechanism.
- EP3026504 discloses a perpetual calendar mechanism based on a 48 cam comprising 48 notches which are each associated with a month over a period of four years consecutive.
- This mechanism further comprises a rocker comprising a feeler tail intended to cooperate with these 48 notches.
- EP3734373 discloses another example of a perpetual calendar mechanism.
- This includes a month cam having an eccentric circular cutout in which a year cam is arranged.
- a large rocker is arranged to come into contact with the profile of one or the other of the month and year cams depending on the respective angular position of each cam.
- the years cam being eccentric in relation to the months cam, the perpetual calendar mechanism comprises a drive system capable not only of activating the years cam in rotation around its axis at the rate of one revolution every four years but also to drive the year cam together with the month cam around the center of the latter at the rate of one revolution per year.
- This mechanism includes a drive system which therefore has the disadvantage of being relatively complex in order to impart two distinct movements to the year cam.
- An aim of the present invention is therefore to propose a perpetual calendar mechanism at least free from the aforementioned limitations.
- an aim of the present invention is to propose a compact perpetual calendar mechanism.
- Another aim of the present invention is to propose a perpetual calendar mechanism of simpler, more robust and therefore more reliable construction.
- An additional aim of the present invention is to propose a perpetual calendar mechanism comprising a system for driving the month and year cams which is simplified compared to the aforementioned mechanisms.
- a perpetual calendar mechanism for a watch movement comprising an assembly with concentric cams.
- This assembly includes a month cam arranged to be driven at a rate of one revolution per year, and a year cam arranged to be driven at a rate of one revolution every four years.
- the month cam includes a central housing in which the year cam is positioned.
- the mechanism further comprises a rocker comprising a feeler arranged to cooperate with the concentric cam assembly, as well as a star.
- This star is arranged to be actuated daily directly or indirectly by the rocker and to also be actuated on the last day of months of less than 31 days, depending on the angular position of the month cam and the year cam in order to carry out a catch-up until reaching a state corresponding to the 1st date of the following month.
- the month cam has a radial opening so that the rocker feeler can cooperate with one or the other of the month cam and the year cam depending on the angular position of the month cam.
- the thickness of one of the month cam and the year cam is at least half the thickness of the other of the month cam and the year cam.
- At least 3/5, preferably at least 4/5 of the thickness of one of the cam of the months and of the cam of the years is level with the thickness of the other of the months cam and the years cam.
- the upper face of the month cam is substantially coplanar with the upper face of the year cam.
- the lower face of the month cam is substantially coplanar with the lower face of the year cam.
- the central housing of the month cam comprises a cylindrical wall arranged against at least part of the profile of the year cam so that the year cam can guide the month cam in rotation.
- the year cam is integral with a large wheel engaged with at least one wheel arranged to be driven once a month by the star.
- the month cam is arranged to be driven by a gear train comprising a first wheel secured to the month cam and mounted coaxially therewith, a second wheel engaged with the first wheel and a return gear secured to the month cam. second wheel and engaged with the teeth of the large wheel.
- the rocker feeler is arranged between the first wheel and the large wheel.
- the first wheel and the month cam together form a single part.
- the big wheel and the year cam together form a single part.
- the profile of the year cam has three radial notches corresponding to the sectors of the month of February of non-leap years of the cam.
- the mechanism further comprises a 24 o'clock wheel arranged to be driven one revolution in 24 hours and a 24 o'clock finger secured to the 24 o'clock wheel.
- the rocker has a first beak arranged to cooperate with a 24H finger and a second beak arranged to rotate the 31 star, typically attached to the indications of the days of the month.
- the mechanism further comprises a wheel and a finger secured to the wheel.
- the rocker has a rake engaged with the wheel in order to engage the finger with the star of 31 each time the rocker is actuated by the finger of 24H.
- the star of 31 can be rotated one step per day.
- the perpetual calendar mechanism 10 comprises an assembly with concentric cams 20 and a rocker 50 arranged to cooperate with the assembly with concentric cams 20 and to actuate a star of 31 - 70 as a function of the information given by the assembly to concentric cams 20.
- This assembly 20 comprises a cam of months 22, commonly called cam of 12, and a cam of years 30 which are mounted coaxially.
- the month cam 22 comprises for this purpose a central housing 28 defined by a cylindrical wall 28a and a radial opening 27 extending from the edge of the cam profile and opening into the central housing 28 as illustrated in particular by the figures 5 and 6 .
- the 30s cam is arranged inside the central housing 28 of the months cam.
- this central housing 28 consists of a through opening provided in the cam of the months 22. More preferably, this opening is essentially circular in shape and would allow the cam of the 30s to pass through the cam of the months 22.
- the month cam has four sectors 25a corresponding to the months with 30 days of the year, and seven sectors 25b corresponding to the months with 31 days of the year, including two pairs of sectors, corresponding to the pairs of the months July-August and December-January, are each made up of contiguous sectors 25b.
- the sectors 25a and 25b, as well as the radial opening 27 representing the month of February, are successively arranged so as to represent, in chronological order, the different months of the year.
- the radial opening 27 is bordered by two sectors 25b corresponding to the months of January and March.
- Sectors 25a and 25b are typically circular sectors whose distal edges define arcs of circles with the same center.
- the radial opening 27 allows the rocker 50 to take information from the year cam in order to perform a catch-up on the star 70 at the end of the month of February depending on This is a non-leap year or a leap year.
- the profile of the 1930s cam has three radial notches 34a spaced from each other by 90°. These three notches allow you to correct the display of the date at the end of February in a non-leap year.
- the profile of the 1930s cam further comprises a sector 34b extending between two radial notches 34a which are substantially diametrically opposed. Sector 34b allows you to correct the display of the date at the end of February in a leap year.
- the upper and lower faces of the cams of months 22 and years 30 are plane and perpendicular to the common axis of rotation of these cams.
- the upper face 23a of the month cam 22 is substantially coplanar with the upper face 32a of the cam of the 30s, that is to say that the offset between the respective upper faces of the two cams does not exceed 20%, preferably 10%, of the thickness of one of the cams.
- the cam of the 30s is preferably fully nested in the cam of the months 22 with the profile cam of constant diameter located against the cylindrical wall 28a of the central housing 28 so that the month cam can thus be guided in rotation by the year cam.
- the thickness of the month cam can, however, be significantly different from the thickness of the year cam according to execution variants not shown.
- the thickness of the cam of the months 22 can be much less than the thickness of the cam of the years 30 and represent for example half the thickness of the cam of the years.
- the opposite is also possible, that is to say that the thickness of the cam of the 30s can be much less than the thickness of the cam of the months 22 and represent for example half the thickness of this last.
- the cylindrical wall 28a defining the central housing 28 of the cam of the months 22 is arranged against the cam profile of constant diameter of the cam of the years 30.
- this arrangement is established with just sufficient clearance so that one of the cams 22, 30 does not drive the other by friction.
- the year cam can thus be rotated at the rate of one revolution every four years while guiding the rotation of the month cam 22 around its profile at the rate of one revolution per year.
- the 22 month cam and the 30 year cam therefore remain separate and rotate at different speeds.
- the cam from the 1930s is integral with a large wheel 36.
- This is typically in mesh with a train of cogs preferably comprising a first and a second wheel 37, 38 as illustrated in the figure 1 .
- the first wheel 37 is arranged to be driven once a month by the passage of a training finger 76 secured to the star 70.
- This is secured to a display (not shown) comprising the numbers from 1 to 31 in order to scroll them successively for example through a window of a dial.
- the cog train 37, 38 makes it possible to drive the large wheel 36 a complete revolution every four years in order to drive the cam of the 30s so that it also makes a complete revolution every four years.
- the big wheel 36 and the cam of the 30s are made in one piece but could just as easily be made separately and fixed against each other.
- the months cam 22 is for its part arranged to be driven by a gear train comprising a first wheel 42 secured to the months cam 22 and mounted coaxially thereto, a second wheel 44 engaged with the first wheel 42 and a return 46 integral with the second wheel 44 and engaged with the teeth of the large wheel 36.
- the cam of the months 22 and the first wheel 42 are made in one piece but could just as easily be made separately and fixed against each other.
- the second wheel 44 has twelve teeth and cooperates with a jumper 47 in order to drive the month cam 22 by the second wheel 44 in rotation at the rate of a jump of 30° (one twelfth of a turn) every month, the jumper 47 allowing the jump to be completed.
- the perpetual calendar mechanism 10 further comprises a 24-hour wheel 80 arranged to be driven at a rate of one revolution per day.
- a 24H finger 82 is fixed on the 24H wheel 80 to actuate the rocker 50 which in turn rotates the wheel 62 in engagement with a rake 58 secured to the rocker 50 in order to rotate the star 70 by through the intermediary of the finger 66 secured of wheel 62 so that star 70 makes a jump each day.
- a catch-up at the end of the month is carried out depending on the angular position of the cam for months 22 and the cam for years 30.
- the rocker 50 comprises for this purpose a feeler 52 arranged to cooperate with the profile of one or the other of the month cam and the year cam as a function of the respective angular position of each cam.
- the feeler 52 is arranged to rest against the profile of one of the aforementioned cams. Being located at different radial distances from the common center of rotation of the cams 22 and 30, these different profiles make it possible to vary the amplitude of the movement of the rocker 50, when the latter is actuated by the 24H finger 82.
- the feeler 52 is arranged between the first wheel 42 and the large wheel 36 as illustrated in Figure 3 .
- the radial opening 27 of the cam of the months 22 is positioned facing the probe 52 so that the probe can be introduced into this opening to come into contact with the profile of the cam of the years 30 so as to be able to carry out the correction necessary at the end of February taking into account leap years.
- the rocker 50 further comprises a first beak 54 positioned on the trajectory of the 24H finger 82 as well as a second beak 56 arranged to actuate the star 70 via a catch-up finger 72 secured to the star 70 , which cooperates with a jumper 74 as shown in figure 1 .
- the catch-up finger 72 is mounted on a leaf spring 73 arranged to flex under the action of the second nose 56 of the rocker against the catch-up finger 72 so that the rocker 50 is not blocked by this finger when the feeler 52 falls against the concentric cam assembly 20.
- a rocker spring 60 for example having the shape of a spiral, is fixed to the wheel 62 in order to force the latter into the angular position illustrated in the figure 1 .
- This arrangement including in particular the rake 58, the wheel 62 and the rocker spring 60, makes it possible to force the feeler 52 of the rocker 50 against the profile of one or the other of the month cam 22 and the cam 30s when the seesaw is at rest.
- a finger 66 is secured to the wheel 62 in order to be able to activate the star 70 each day with a jump, namely with a step. It will be noted that the figure 1 illustrates the state of the mechanism on the 28th day of February of a non-leap year.
- the catch-up finger 72 being integral with the star 70, it therefore rotates every month. This finger is clear of the trajectory of the second beak 56 of the rocker 50 throughout the month so that the latter activates the star 70 each day only via the finger 66 thus ensuring the passage of an indication of one day to an indication of the next day. At the end of each month of less than 31 days, the catch-up finger 72 is positioned on the trajectory of the second beak 56 of the rocker 50 as illustrated in particular in figure 1 .
- the 24H finger When the 24H finger activates the rocker 50 again, it will drive the star 70 by the action of the second beak 56 on the catch-up finger 72 depending on the amplitude of the movement of the rocker 50, directly linked to the angular position of each of the cams of the months and years 22, 30, so that the star 70 can make one or more additional jumps to catch up on the night of the last day of a month of less than 31 days to the first day of a following month.
- THE figures 1 And 8a to 8d represent an operational sequence at the end of February of a non-leap year.
- the figure 1 illustrates the state of the mechanism on the 28th day of February of a non-leap year.
- the lateral edges of a portion of the probe 52 are found against the edges of the radial opening 27 of the month cam.
- the distal part of the probe 52 is found inside one of the notches 34a of the cam of the 30s ( Figure 7 ).
- FIG 8a illustrates the mechanism when the 24H finger 82 comes into contact with the first beak 54 of the rocker 50 and exerts a thrust on the latter in order to release the feeler 52 from the radial notch 34a of the year cam.
- the second nose 56 of the rocker 50 in turn exerts a thrust on the catch-up finger 72 of the star 31, which initiates the rotation of the latter.
- the movement of the second nozzle 56 illustrated between the representations of the figures 8a And 8b allows the star 70 to be rotated, via the catch-up finger 72, so that it makes three successive jumps.
- the amplitude of the movement of the flip-flop 50 is therefore maximum during this period.
- the rake thereof rotates the wheel 62, which progressively pivots the finger 66 until the latter activates the star 70 by one step as shown in figures 8c And 8d .
- the second beak 56 of the seesaw 50 activates the star 70 so that it makes three successive jumps, then the finger 66 activates the star so that it makes an additional jump.
- the catch-up finger 72 is released from the trajectory of the beak 56 of the rocker 50 throughout the month so that the latter activates the star 70 each day only via the finger 66 ensuring thus the transition from an indication of one day to an indication of the following day.
- the contact of the feeler 52 of the rocker against the sector 25b of the month cam makes it possible to position the rocker 50 so that the second beak 56 is clear of the trajectory of the catch-up finger 72, in particular at the end of the month when it passes during the period March 30-31. No correction is therefore made for this month. The same goes for all months which, like March, have 31 days.
- THE figures 9a And 9b illustrate an operational sequence at the end of February in a leap year.
- figure 9a represents the mechanism on the 29th day.
- the feeler 52 of the rocker 50 is arranged at this moment against a sector 34b of the profile of the cam of the years.
- the finger of 24H 82 exerts a push on the first beak 54 of the rocker 50, driving the latter until the second beak 56 in turn exerts a push on the finger of catch-up 72 of the star 70 ( figure 9b ) so that it makes two successive jumps.
- the finger 66 activates the star 70 according to the description above, which makes an additional jump in order to make the transition from the indication of the 29th to the indication of March 1st .
- THE figures 10a to 10d represent an operational sequence at the end of April.
- figure 10a represents the mechanism on the 30th day of April.
- the feeler 52 of the rocker 50 is arranged at this moment against a sector 25a of the profile of the month cam.
- the 24H finger 82 exerts a push on the first beak 54 of the rocker 50 according to the figure 10b then the second nozzle 56 thereof drives the star 70 via the catch-up finger 72 according to the figure 10c so that the star performs a jump followed by an additional jump under the action of the finger 66 which is pivoted thanks to the action of the rake of the rocker on the wheel 62.
- the flip-flop 50 could be configured to directly activate the star of 31 every day so that the latter can in particular perform a single jump independently of the amplitude of movement of the flip-flop, which would, for example, make it possible to do without the need for finger 66.
- the rocker could be replaced by a large conventional rocker comprising a large pawl cooperating with a cam of 31 secured to the star of 31 in place of the catch-up finger.
Abstract
La présente invention concerne un mécanisme de quantième perpétuel pour mouvement horloger, comprenant un ensemble à cames concentriques (20) avec une came des mois (22) et une came des années (30). Le mécanisme comprend en outre une bascule (50) comportant un palpeur (52) agencé pour coopérer avec l'ensemble à cames concentriques (20), ainsi qu'une étoile (70). Cette étoile (70) est agencée pour être actionnée quotidiennement directement ou indirectement par la bascule (50) et pour être en outre actionnée le dernier jour des mois de moins de 31 jours, en fonction de la position angulaire de la came des mois (22) et de la came des années (30) afin d'effectuer un rattrapage jusqu'au 1<sup>er</sup> du mois suivant. La came des mois (22) comporte une ouverture radiale (27) afin que le palpeur (52) de la bascule (50) puisse coopérer avec l'une ou l'autre de la came des mois (22) et de la came des années (30) en fonction de la position angulaire de la came des mois (22).The present invention relates to a perpetual calendar mechanism for a watch movement, comprising a concentric cam assembly (20) with a month cam (22) and a year cam (30). The mechanism further comprises a rocker (50) comprising a feeler (52) arranged to cooperate with the concentric cam assembly (20), as well as a star (70). This star (70) is arranged to be actuated daily directly or indirectly by the rocker (50) and to be further actuated on the last day of months of less than 31 days, depending on the angular position of the month cam (22). ) and the years cam (30) in order to carry out a catch-up until the 1st of the following month. The months cam (22) has a radial opening (27) so that the feeler (52) of the rocker (50) can cooperate with one or the other of the months cam (22) and the cam of the months years (30) depending on the angular position of the month cam (22).
Description
La présente invention concerne un mécanisme de quantième perpétuel, pour mouvement horloger, comportant une came des mois et une came des années imbriquée dans la came des mois de manière concentrique. L'invention concerne également une pièce d'horlogerie, en particulier une montre-bracelet, comportant un mouvement horloger équipé du mécanisme de quantième perpétuel à cames concentriques.The present invention relates to a perpetual calendar mechanism, for a watch movement, comprising a month cam and a year cam nested in the month cam in a concentric manner. The invention also relates to a timepiece, in particular a wristwatch, comprising a watch movement equipped with the perpetual calendar mechanism with concentric cams.
Il existe différents mécanismes pour indiquer une information relative à la date. Ces mécanismes sont de construction relativement simple pour l'affichage de la date sans correction, de type à quantième annuel capable de gérer le passage des mois à 30 et 31 jours au 1er du mois suivant, et du type à quantième perpétuel qui comporte une mémoire mécanique, pour ainsi dire, permettant non seulement de gérer le passage des mois à 30 et 31 jours au 1er du mois suivant, mais aussi le passage de la fin du mois de février au 1er mars en prenant en compte les années bissextiles.There are different mechanisms for indicating date information. These mechanisms are of relatively simple construction for displaying the date without correction, of the annual calendar type capable of managing the transition from months with 30 and 31 days to the 1st of the following month, and of the perpetual calendar type which includes a mechanical memory, so to speak, allowing not only to manage the transition from months with 30 and 31 days to the 1st of the following month, but also the transition from the end of February to March 1st by taking into account leap years .
Les mécanismes à quantième perpétuel ont par conséquent le plus souvent une construction complexe et encombrante, ce qui peut avoir un impact non-négligeable sur la taille de la boite de montre incorporant un mouvement horloger équipé d'un tel mécanisme.Perpetual calendar mechanisms therefore most often have a complex and bulky construction, which can have a significant impact on the size of the watch case incorporating a watch movement equipped with such a mechanism.
A titre d'exemple,
Ce mécanisme comporte un système d'entrainement qui a par conséquent le désavantage d'être relativement complexe afin d'imprimer deux mouvements distincts à la came des années.This mechanism includes a drive system which therefore has the disadvantage of being relatively complex in order to impart two distinct movements to the year cam.
Un but de la présente invention est par conséquent de proposer un mécanisme de quantième perpétuel au moins exempt des limitations susvisées.An aim of the present invention is therefore to propose a perpetual calendar mechanism at least free from the aforementioned limitations.
Plus particulièrement, un but de la présente invention est de proposer un mécanisme de quantième perpétuel compact.More particularly, an aim of the present invention is to propose a compact perpetual calendar mechanism.
Un autre but de la présente invention est de proposer un mécanisme de quantième perpétuel de construction plus simple, plus robuste et par conséquent plus fiable.Another aim of the present invention is to propose a perpetual calendar mechanism of simpler, more robust and therefore more reliable construction.
Un but additionnel de la présente invention est de proposer un mécanisme de quantième perpétuel comportant un système d'entrainement des cames des mois et des années qui est simplifié par rapport aux mécanismes susvisés.An additional aim of the present invention is to propose a perpetual calendar mechanism comprising a system for driving the month and year cams which is simplified compared to the aforementioned mechanisms.
Ces buts sont atteints notamment par un mécanisme de quantième perpétuel pour mouvement horloger, comprenant un ensemble à cames concentriques. Cet ensemble comporte une came des mois agencée pour être entraînée à raison d'un tour par an, et une came des années agencée pour être entraînée à raison d'un tour tous les quatre ans. La came des mois comprend un logement central dans lequel est positionnée la came des années. Le mécanisme comprend en outre une bascule comportant un palpeur agencé pour coopérer avec l'ensemble à cames concentriques, ainsi qu'une étoile. Cette étoile est agencée pour être actionnée quotidiennement directement ou indirectement par la bascule et pour être en outre actionnée le dernier jour des mois de moins de 31 jours, en fonction de la position angulaire de la came des mois et de la came des années afin d'effectuer un rattrapage jusqu'à atteindre un état correspondant au 1er quantième du mois suivant. La came des mois comporte une ouverture radiale afin que le palpeur de la bascule puisse coopérer avec l'une ou l'autre de la came des mois et de la came des années en fonction de la position angulaire de la came des mois.These goals are achieved in particular by a perpetual calendar mechanism for a watch movement, comprising an assembly with concentric cams. This assembly includes a month cam arranged to be driven at a rate of one revolution per year, and a year cam arranged to be driven at a rate of one revolution every four years. The month cam includes a central housing in which the year cam is positioned. The mechanism further comprises a rocker comprising a feeler arranged to cooperate with the concentric cam assembly, as well as a star. This star is arranged to be actuated daily directly or indirectly by the rocker and to also be actuated on the last day of months of less than 31 days, depending on the angular position of the month cam and the year cam in order to carry out a catch-up until reaching a state corresponding to the 1st date of the following month. The month cam has a radial opening so that the rocker feeler can cooperate with one or the other of the month cam and the year cam depending on the angular position of the month cam.
Selon une forme de réalisation, l'épaisseur de l'une de la came des mois et de la came des années fait au moins la moitié de l'épaisseur de l'autre de la came des mois et de la came des années.According to one embodiment, the thickness of one of the month cam and the year cam is at least half the thickness of the other of the month cam and the year cam.
Selon une forme de réalisation, au moins 3/5, de préférence au moins 4/5 de l'épaisseur de l'une de la came des mois et de la came des années est au niveau de l'épaisseur de l'autre de la came des mois et de la came des années.According to one embodiment, at least 3/5, preferably at least 4/5 of the thickness of one of the cam of the months and of the cam of the years is level with the thickness of the other of the months cam and the years cam.
Selon une forme de réalisation, la face supérieure de la came des mois est sensiblement coplanaire avec la face supérieure de la came des années.According to one embodiment, the upper face of the month cam is substantially coplanar with the upper face of the year cam.
Selon une forme de réalisation, la face inférieure de la came des mois est sensiblement coplanaire avec la face inférieure de la came des années.According to one embodiment, the lower face of the month cam is substantially coplanar with the lower face of the year cam.
Selon une forme de réalisation, le logement central de la came des mois comporte une paroi cylindrique agencée contre au moins une partie du profil de la came des années afin que la came des années puisse guider en rotation la came des mois.According to one embodiment, the central housing of the month cam comprises a cylindrical wall arranged against at least part of the profile of the year cam so that the year cam can guide the month cam in rotation.
Selon une forme de réalisation, la came des années est solidaire d'une grande roue en prise avec au moins une roue agencée pour être entrainée une fois par mois par l'étoile. La came des mois est agencée pour être entraînée par un train d'engrenage comportant une première roue solidaire de la came des mois et montée de manière coaxiale à celle-ci, une seconde roue en prise avec la première roue et un renvoi solidaire de la seconde roue et en prise avec la denture de la grande roue.According to one embodiment, the year cam is integral with a large wheel engaged with at least one wheel arranged to be driven once a month by the star. The month cam is arranged to be driven by a gear train comprising a first wheel secured to the month cam and mounted coaxially therewith, a second wheel engaged with the first wheel and a return gear secured to the month cam. second wheel and engaged with the teeth of the large wheel.
Selon une forme de réalisation, le palpeur de la bascule est agencé entre la première roue et la grande roue.According to one embodiment, the rocker feeler is arranged between the first wheel and the large wheel.
Selon une forme de réalisation, la première roue et la came des mois forment ensemble une seule pièce.According to one embodiment, the first wheel and the month cam together form a single part.
Selon une forme de réalisation, la grande roue et la came des années forment ensemble une seule pièce.According to one embodiment, the big wheel and the year cam together form a single part.
Selon une forme de réalisation, le profil de la came des années comporte trois encoches radiales correspondant aux secteurs du mois de février des années non-bissextiles de la came.According to one embodiment, the profile of the year cam has three radial notches corresponding to the sectors of the month of February of non-leap years of the cam.
Selon une forme de réalisation, le mécanisme comporte en outre une roue de 24H agencée pour être entraînée à raison d'un tour en 24 heures et un doigt de 24H solidaire de la roue de 24H. La bascule comporte quant à elle un premier bec agencé pour coopérer avec un doigt de 24H et un second bec agencé pour actionner en rotation l'étoile de 31, typiquement solidaire des indications des jours du mois.According to one embodiment, the mechanism further comprises a 24 o'clock wheel arranged to be driven one revolution in 24 hours and a 24 o'clock finger secured to the 24 o'clock wheel. The rocker has a first beak arranged to cooperate with a 24H finger and a second beak arranged to rotate the 31 star, typically attached to the indications of the days of the month.
Selon une forme de réalisation, le mécanisme comporte en outre une roue et un doigt solidaire de la roue. La bascule comporte un râteau en prise avec la roue afin d'engager le doigt avec l'étoile de 31 à chaque fois que la bascule est actionnée par le doigt de 24H. Par ce biais, l'étoile de 31 peut être actionnée en rotation d'un pas par jour.According to one embodiment, the mechanism further comprises a wheel and a finger secured to the wheel. The rocker has a rake engaged with the wheel in order to engage the finger with the star of 31 each time the rocker is actuated by the finger of 24H. By this means, the star of 31 can be rotated one step per day.
D'autres aspects de l'invention portent d'une part sur un mouvement horloger équipé du mécanisme de quantième à cames concentriques selon l'invention, et d'autre part sur une pièce d'horlogerie, en particulier une montre-bracelet, comportant un mouvement horloger équipé du mécanisme de quantième à cames concentriques selon l'invention.Other aspects of the invention relate on the one hand to a watch movement equipped with the date mechanism with concentric cams according to the invention, and on the other hand to a timepiece, in particular a wristwatch, comprising a watch movement equipped with the date mechanism with concentric cams according to the invention.
Des exemples de mise en oeuvre de l'invention sont indiqués dans la description illustrée par les figures annexées dans lesquelles :
- la
figure 1 illustre une vue de dessus d'un mécanisme de quantième perpétuel à cames concentriques selon une forme de réalisation ; - la
figure 2 illustre une vue de dessus d'une bascule agencée pour coopérer avec un ensemble à cames concentriques du mécanisme de lafigure 1 ; - la
figure 3 illustre une vue en coupe de l'ensemble à cames concentriques et du palpeur de lafigure 2 ; - la
figure 4 illustre une vue en éclaté de l'ensemble à cames concentriques de lafigure 2 ; - la
figure 5 illustre une vue en perspective de dessous de la came des mois; - la
figure 6 illustre une vue de dessous de la came des mois de lafigure 5 ; - la
figure 7 illustre une vue de dessus de la grande roue et de la came des années de l'ensemble à cames concentriques de lafigure 4 ; - les
figures 1 et8a à 8d illustrent des vues de dessus d'un exemple d'une séquence opérationnelle du mécanisme de quantième perpétuel de lafigure 1 lors du passage du dernier jour du mois de février au premier jour du mois de mars au cours d'une année non-bissextile ; - les
figures 9a et9b illustrent des vues de dessus d'un exemple d'une séquence opérationnelle du mécanisme de quantième perpétuel de lafigure 1 lors du passage du dernier jour du mois de février au premier jour du mois de mars au cours d'une année bissextile, et - les
figures 10a à 10d illustrent des vues de dessus d'un exemple d'une séquence opérationnelle du mécanisme de quantième perpétuel de lafigure 1 lors du passage du 30ème jour du mois d'avril au premier jour du mois de mai.
- there
figure 1 illustrates a top view of a perpetual calendar mechanism with concentric cams according to one embodiment; - there
figure 2 illustrates a top view of a rocker arranged to cooperate with a concentric cam assembly of the mechanism of thefigure 1 ; - there
Figure 3 illustrates a sectional view of the concentric cam assembly and the feeler of thefigure 2 ; - there
Figure 4 illustrates an exploded view of the concentric cam assembly of thefigure 2 ; - there
Figure 5 illustrates a bottom perspective view of the month cam; - there
Figure 6 illustrates a bottom view of the month cam of theFigure 5 ; - there
Figure 7 illustrates a top view of the large wheel and cam of the years of the concentric cam assembly of theFigure 4 ; - THE
figures 1 And8a to 8d illustrate top views of an example of an operational sequence of the perpetual calendar mechanism of thefigure 1 when the last day of February changes to the first day of March during a non-leap year; - THE
figures 9a And9b illustrate top views of an example of an operational sequence of the perpetual calendar mechanism of thefigure 1 when the last day of February changes to the first day of March during a leap year, and - THE
figures 10a to 10d illustrate top views of an example of an operational sequence of the perpetual calendar mechanism of thefigure 1 during the transition from the 30th day of April to the first day of May.
Selon une forme préférentielle et en référence notamment aux
La came des mois 22 comprend à cette fin un logement central 28 défini par une paroi cylindrique 28a et une ouverture radiale 27 s'étendant du bord du profil de came et débouchant dans le logement central 28 comme illustré en particulier par les
Selon les
Ainsi, l'ouverture radiale 27 est bordée de deux secteurs 25b correspondant aux mois de janvier et de mars. Les secteurs 25a et 25b sont typiquement des secteurs circulaires dont les bords distaux définissent des arcs de cercles de même centre. Comme décrit en détail ci-après, l'ouverture radiale 27 permet à la bascule 50 de prélever l'information sur la came des années afin d'effectuer sur l'étoile 70 un rattrapage à la fin du mois de février en fonction de s'il s'agit d'une année non-bissextile ou d'une année bissextile.Thus, the
En référence à la
De préférence, les faces supérieures et inférieures des cames des mois 22 et des années 30 sont planes et perpendiculaires à l'axe de rotation commun de ces cames. En se référant à la
L'épaisseur de la came des mois peut toutefois être sensiblement différente de l'épaisseur de la came des années selon des variantes d'exécution non-illustrées. L'épaisseur de la came des mois 22 peut être bien inférieure à l'épaisseur de la came des années 30 et représenter par exemple la moitié de l'épaisseur de la came des années. L'inverse est également possible, c'est-à-dire que l'épaisseur de la came des années 30 peut être bien inférieure à l'épaisseur de la came des mois 22 et représenter par exemple la moitié de l'épaisseur de cette dernière.The thickness of the month cam can, however, be significantly different from the thickness of the year cam according to execution variants not shown. The thickness of the cam of the
De manière avantageuse, la paroi cylindrique 28a définissant le logement central 28 de la came des mois 22 est agencée contre le profil de came de diamètre constant de la came des années 30. De préférence, cet agencement est établi avec un jeu juste suffisant pour que l'une des cames 22, 30 n'entraîne pas l'autre par frottement. La came des années peut ainsi être entraînée en rotation à raison d'un tour tous les quatre ans tout en guidant la rotation de la came des mois 22 autour de son profil à raison d'un tour par année. La came des mois 22 et la came des années 30 demeurent donc dissociées et tournent à des vitesses différentes.Advantageously, the
En référence notamment à la
La grande roue 36 et la came des années 30 sont réalisées en une seule pièce mais pourraient tout aussi bien être réalisées séparément et fixées l'une contre l'autre. La came des mois 22 est quant à elle agencée pour être entrainée par un train d'engrenages comportant une première roue 42 solidaire de la came des mois 22 et montée de manière coaxiale à celle-ci, une seconde roue 44 en prise avec la première roue 42 et un renvoi 46 solidaire de la seconde roue 44 et en prise avec la denture de la grande roue 36. A l'instar de la grande roue 36 et de la came des années 30, la came des mois 22 et la première roue 42 sont réalisées en une seule pièce mais pourraient tout aussi bien être réalisées séparément et fixées l'une contre l'autre.The
Selon la
En référence à la
Le palpeur 52 est agencé entre la première roue 42 et la grande roue 36 comme illustré à la
La bascule 50 comporte en outre un premier bec 54 positionné sur la trajectoire du doigt de 24H 82 ainsi qu'un second bec 56 agencé pour actionner l'étoile 70 par l'intermédiaire d'un doigt de rattrapage 72 solidaire de l'étoile 70, laquelle coopère avec un sautoir 74 tel que représenté à la
Un ressort de bascule 60, ayant par exemple la forme d'un spiral, est fixé à la roue 62 afin de contraindre celle-ci dans la position angulaire illustrée à la
Le doigt de rattrapage 72 étant solidaire de l'étoile 70, il effectue par conséquent une rotation tous les mois. Ce doigt est dégagé de la trajectoire du second bec 56 de la bascule 50 tout au long du mois afin que celle-ci actionne chaque jour l'étoile 70 uniquement par l'intermédiaire du doigt 66 assurant ainsi le passage d'une indication d'un jour à une indication du jour suivant. A la fin de chaque mois de moins de 31 jours, le doigt de rattrapage 72 vient se positionner sur la trajectoire du second bec 56 de la bascule 50 comme illustré notamment à la
Lorsque le doigt de 24H actionne à nouveau la bascule 50, celle-ci entrainera l'étoile 70 par l'action du second bec 56 sur le doigt de rattrapage 72 en fonction de l'amplitude du déplacement de la bascule 50, directement liée à la position angulaire du chacune des cames des mois et des années 22, 30, afin que l'étoile 70 puisse effectuer un ou plusieurs sauts additionnels pour réaliser un rattrapage dans la nuit du dernier jour d'un mois de moins de 31 jours au premier jour d'un mois suivant.When the 24H finger activates the
L'utilisation d'une came des années imbriquée dans une came des mois à la place d'une came de 48 conventionnelle permet avantageusement d'avoir un palpeur de dimensions plus importantes et par conséquent plus robuste. Cela permet de réaliser un mécanisme de quantième perpétuel plus fiable et moins sensible aux défauts d'usinage. Le montage et le réglage du mécanisme s'en trouve par ailleurs facilité.The use of a years cam nested in a months cam in place of a conventional 48 cam advantageously makes it possible to have a probe of larger dimensions and therefore more robust. This makes it possible to create a perpetual calendar mechanism more reliable and less sensitive to machining defects. The assembly and adjustment of the mechanism is also made easier.
Le fonctionnement du mécanisme de quantième perpétuel 10 va à présent être décrit en références aux
Les
La
Le déplacement du second bec 56, illustré entre les représentations des
On relèvera en se référant à la
A compter du 1er mars, le doigt de rattrapage 72 est dégagé de la trajectoire du bec 56 de la bascule 50 tout au long du mois afin que celle-ci actionne chaque jour l'étoile 70 uniquement par l'intermédiaire du doigt 66 assurant ainsi le passage d'une indication d'un jour à une indication du jour suivant. Le contact du palpeur 52 de la bascule contre le secteur 25b de la came des mois permet de positionner la bascule 50 pour que le second bec 56 soit dégagé de la trajectoire du doigt de rattrapage 72, en particulier en fin de mois lors de son passage au cours de la période 30-31 mars. Aucune correction n'est ainsi effectuée pour ce mois. Il en va de même pour tous les mois qui, comme le mois de mars, comportent 31 jours.From March 1 , the catch-up
Les
Les
On relèvera selon la
Selon la
Le fonctionnement de la séquence décrit ci-dessus en référence au mois d'avril demeure identique pour les autres mois de l'année qui, comme le mois d'avril, comportent également 30 jours.The operation of the sequence described above with reference to the month of April remains identical for the other months of the year which, like the month of April, also have 30 days.
Diverses modifications peuvent être apportées au mécanisme de quantième qui vient d'être décrit sans s'écarter de l'invention telle que définie par les revendications. Par exemple, la bascule 50 pourrait être conformée pour actionner chaque jour directement l'étoile de 31 afin que celle-ci puisse notamment effectuer un saut unique indépendamment de l'amplitude de déplacement de la bascule, ce qui permettrait par exemple de se passer du doigt 66. Selon une autre variante, la bascule pourrait être remplacée par une grande bascule conventionnelle comportant un grand cliquet coopérant avec une came de 31 solidaire de l'étoile de 31 à la place du doigt de rattrapage.Various modifications can be made to the date mechanism which has just been described without departing from the invention as defined by the claims. For example, the flip-
Mécanisme de quantième perpétuel 10
- Ensemble à cames concentriques 20
- Came des
mois 22- Face supérieure 23a
Face inférieure 23b- Secteurs des mois à 30
jours 25a - Secteurs des mois à 31 jours 25b
Ouverture radiale 27- Logement central 28
Paroi cylindrique 28a
- Came des années 30
- Face supérieure 32a
Face inférieure 32b- Encoches radiales 34a
- Secteur 34b
Grande roue 36- Train d'engrenages
- Première et seconde roues 42, 44
Renvoi 46
Sautoir 47- Train de rouages
Première et seconde roue 37, 38
- Came des
Bascule 50Palpeur 52Premier bec 54Second bec 56Râteau 58
- Ressort de bascule 60 (e.g. spiral)
Roue 62Doigt 66- Etoile de 31 - 70
- Doigt de rattrapage 72
Lame ressort 73Sautoir 74Doigt d'entrainement 76
- Roue de
24H 80 Doigt de 24H 82
-
Concentric cam assembly 20- Cam of
months 22-
Upper face 23a -
Underside 23b - Sectors from months to 30
days 25a - Sectors from months to 31
days 25b -
Radial opening 27 -
Central accommodation 28
Cylindrical wall 28a
-
- Cam from the 30s
-
Upper face 32a -
Underside 32b -
Radial slots 34a -
Sector 34b
-
-
Ferris wheel 36 - Gear train
- First and
42, 44second wheels -
Reference 46
- First and
-
Necklace 47 - Cog train
First and 37, 38second wheel
- Cam of
-
Rocker 50-
Feeler 52 -
First beak 54 -
Second beak 56 -
Rake 58
-
- Rocker spring 60 (eg spiral)
-
Wheel 62 -
Finger 66 - Star 31 - 70
- Catch-up
finger 72 -
Blade spring 73 -
Necklace 74 -
Training finger 76
- Catch-up
-
24H 80 wheel -
24H 82 finger
Claims (15)
la came des mois (22) comporte une ouverture radiale (27) afin que le palpeur (52) de la bascule (50) puisse coopérer avec l'une ou l'autre de la came des mois (22) et de la came des années (30) en fonction de la position angulaire de la came des mois (22).
the months cam (22) has a radial opening (27) so that the feeler (52) of the rocker (50) can cooperate with one or the other of the months cam (22) and the cam of the months years (30) depending on the angular position of the month cam (22).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22190621.7A EP4325303A1 (en) | 2022-08-16 | 2022-08-16 | Perpetual date mechanism with concentric cams |
PCT/IB2023/057952 WO2024038348A1 (en) | 2022-08-16 | 2023-08-07 | Perpetual calendar mechanism with concentric cams |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22190621.7A EP4325303A1 (en) | 2022-08-16 | 2022-08-16 | Perpetual date mechanism with concentric cams |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4325303A1 true EP4325303A1 (en) | 2024-02-21 |
Family
ID=82939800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22190621.7A Pending EP4325303A1 (en) | 2022-08-16 | 2022-08-16 | Perpetual date mechanism with concentric cams |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP4325303A1 (en) |
WO (1) | WO2024038348A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR536251A (en) * | 1921-05-20 | 1922-04-29 | Perpetual calendar system applicable to watches, clocks and clocks | |
EP3026504A1 (en) | 2014-11-27 | 2016-06-01 | Société anonyme de la Manufacture d'Horlogerie Audemars Piguet & Cie | Annual or perpetual calendar mechanism and timepiece comprising the use thereof |
EP3734373A1 (en) | 2019-05-02 | 2020-11-04 | Patek Philippe SA Genève | Device for actuating a calendar star of a semi-perpetual or perpetual calendar mechanism |
-
2022
- 2022-08-16 EP EP22190621.7A patent/EP4325303A1/en active Pending
-
2023
- 2023-08-07 WO PCT/IB2023/057952 patent/WO2024038348A1/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR536251A (en) * | 1921-05-20 | 1922-04-29 | Perpetual calendar system applicable to watches, clocks and clocks | |
EP3026504A1 (en) | 2014-11-27 | 2016-06-01 | Société anonyme de la Manufacture d'Horlogerie Audemars Piguet & Cie | Annual or perpetual calendar mechanism and timepiece comprising the use thereof |
EP3734373A1 (en) | 2019-05-02 | 2020-11-04 | Patek Philippe SA Genève | Device for actuating a calendar star of a semi-perpetual or perpetual calendar mechanism |
Also Published As
Publication number | Publication date |
---|---|
WO2024038348A1 (en) | 2024-02-22 |
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