EP4296788A1 - Device for automatic winding of a barrel spring of a timepiece movement - Google Patents

Device for automatic winding of a barrel spring of a timepiece movement Download PDF

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Publication number
EP4296788A1
EP4296788A1 EP22180159.0A EP22180159A EP4296788A1 EP 4296788 A1 EP4296788 A1 EP 4296788A1 EP 22180159 A EP22180159 A EP 22180159A EP 4296788 A1 EP4296788 A1 EP 4296788A1
Authority
EP
European Patent Office
Prior art keywords
reduction
rotation
mobile
wheels
wheel
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
Application number
EP22180159.0A
Other languages
German (de)
French (fr)
Inventor
Jean-Philippe Rochat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Montres Breguet SA
Original Assignee
Montres Breguet 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 Montres Breguet SA filed Critical Montres Breguet SA
Priority to EP22180159.0A priority Critical patent/EP4296788A1/en
Priority to US18/310,052 priority patent/US20230408978A1/en
Priority to CN202310527499.0A priority patent/CN117270363A/en
Priority to JP2023099176A priority patent/JP7572508B2/en
Publication of EP4296788A1 publication Critical patent/EP4296788A1/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B5/00—Automatic winding up
    • 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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/001—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power
    • G04B11/003—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power with friction member, e.g. with spring action
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/006—Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices)
    • G04B11/008—Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices) with friction members, e.g. click springs or jumper
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • 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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/10—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is not limited
    • G04B5/14—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is not limited acting in both directions

Definitions

  • the devices for automatically winding a barrel spring of a watch are known to allow the transmission of a torque to a barrel ratchet with a view to winding said spring, whatever the direction of rotation of the oscillating mass.
  • the oscillating mass pivots in a second direction, it drives the first wheel in rotation in the first direction, the pawl which it carries separating in rotation said first wheel and the pinion around which it is mounted.
  • the first wheel rotates the second wheel in the second direction, and the pawl which it carries secures its rotation with that of the pinion around which it is mounted, said pinion then rotating the output mobile in the first meaning.
  • winding of the barrel spring is also possible manually, by action on a winding rod kinematically linked to the barrel ratchet, so that its rotation, said winding rod causes the rotation of said ratchet.
  • the barrel ratchet drives the pinions of the clutch wheels in rotation via the output wheel.
  • the pawls of each of the two wheels of said clutch wheels are actuated so as to separate said pinions from said wheels in rotation.
  • the pawls Due to the reduction ratios between the barrel ratchet, the output mobile, and the pinions, the pawls are subjected to very high angular speeds, which is the cause of lubrication problems and premature wear of said ratchets.
  • these clutch mobile mechanisms have the disadvantage of generating significant mechanical clearance between the pawls and the teeth of the clutch mobile pinions during changes in the direction of rotation of the clutch mobile wheels.
  • These games called “blind spots” by those skilled in the art, cause noise, shocks, vibrations and premature wear of the moving parts causing these games.
  • the blind angle also reduces the ability of the winding device to wind the barrel because while the mass travels through this angle, it does not allow the barrel to be wound.
  • the invention resolves the aforementioned drawbacks and concerns for this purpose a device for automatically winding a barrel spring of a watch, comprising an oscillating mass, an input mobile kinematically linked to the oscillating mass, two reduction mobiles and a mobile ratchet trainer.
  • Each reduction mobile comprises a reduction wheel carrying at least four satellites, and a transmission pinion around which the reduction wheel is mounted.
  • the input mobile is kinematically connected to the two reduction wheels so that, whatever the direction of rotation in which it is driven by the oscillating mass, it drives the two reduction wheels to rotate in different directions. the other.
  • the invention may also include one or more of the following characteristics, taken individually or in all technically possible combinations.
  • the reduction mobiles are identical to each other.
  • the transmission pinions comprise a first toothing cooperating with the satellites and a second toothing cooperating with the ratchet driving mobile.
  • FIG. 1 shows a device 10 for automatically winding a barrel spring of a watch according to a preferred embodiment.
  • the winding device 10 comprises an oscillating mass 11, an input mobile 12 engaged with the oscillating mass 11, two reduction mobiles 13 and a ratchet driving mobile 14 intended to cooperate with a ratchet (not shown in the figures).
  • the input wheel 12 is in kinematic relationship, through an input wheel 120 with which it is equipped, with the oscillating mass 11 so that when the latter pivots, it rotates said input wheel 12.
  • the input wheel 120 is meshed, for this purpose, with a driving wheel 110 rigidly fixed to the oscillating mass 11, that is to say without degree of freedom.
  • the driving wheel 110 comprises, in the preferred embodiment of the invention, a number of teeth identical to that of the input wheel 120.
  • the input wheel 12 further comprises a pinion 121 around which the input wheel 120 is rigidly fixed, intended to transmit a rotational movement from said input wheel 12 to one of the reduction wheels 13 with which it is meshed.
  • each reduction wheel 13 comprises a reduction wheel 130 carrying at least four satellites 131, and a transmission pinion 132 around which the reduction wheel 130 is mounted idle, that is to say with a degree of freedom in rotation.
  • the input mobile 12 is kinematically connected to the two reduction wheels 130 so that, whatever the direction of rotation in which it is driven by the oscillating mass 11, it drives the two reduction wheels 130 in rotation according to meanings different from each other.
  • one of the reduction wheels 130 is in meshing relationship with the input mobile 12, in particular with the pinion of the input mobile 12, and with the other reduction wheel 130.
  • the reduction mobiles 13 are identical to each other.
  • the manufacturing and assembly of the device are facilitated, and economies of scale can be achieved.
  • THE figures 2 And 3 represent in detail a reduction mobile 13 according to the preferred embodiment of the present invention.
  • the satellites 131 form, in each of the reduction wheels 13, pawls configured to secure in rotation the transmission pinion 132 and the reduction wheel 130 only when said reduction wheel 130 pivots in a predefined direction of rotation, here the direction hourly.
  • a predefined direction of rotation here the direction hourly.
  • one of the satellites 131 is blocked in rotation against the transmission pinion 132 and applies a moment of force to the teeth of the transmission pinion 132 with which it cooperates, which causes said transmission pinion 132 and the reduction wheel 130 to become joined in rotation.
  • This technical effect is in particular due to the asymmetrical shape of the teeth of the satellites 131.
  • the top of one of its teeth is arranged to rest against the head of an opposite tooth of the transmission pinion 132, said head then constituting a stop.
  • the reduction mobiles 13 being identical to each other, the predefined direction of rotation in which the satellites 131 secure in rotation the reduction wheel 130 and the transmission pinion 132 is identical for both of the reduction wheels 130.
  • the reduction wheels 130 being both driven in rotation in different directions during the rotation of the oscillating mass 11, whatever the direction of rotation of the latter, one of the transmission gears 132 is driven to pivot in the predefined direction, that is to say clockwise.
  • the transmission pinions 132 comprise a first toothing 1320 cooperating with the satellites 131 and materializing a sun wheel, and a second toothing 1321 cooperating with the ratchet driving mobile 14, the first toothing 1320 comprising a greater number of teeth than that of the second toothing 1321.
  • the first and second teething 1320 and 1321 are advantageously fixed on the same shaft and are fixed in rotation relative to each other. In the figures, these first and second teeth 1320 and 1321 are represented schematically by their reference cylinders.
  • each satellite 131 are distributed regularly around the transmission pinion 132 and are each arranged in angular positions, around their respective axes of rotation, different from each other.
  • each satellite 131 has a different orientation so that the engagement of the teeth of the satellites 131 between the teeth of the transmission pinion 132 is different for each of said satellites 131.
  • the mechanical clearance existing between the teeth of the satellite 131 which will apply a moment of force on the teeth of the transmission pinion 132, in particular of the first toothing 1320, and the latter, that is to say the blind spot is minimized.
  • the blind spot is also reduced thanks to the number of 131 satellites.
  • the input mobile 12 and the reduction wheels 130 are dimensioned so that between the oscillating mass 11 and the reduction wheels 130 a reduction ratio greater than or equal to 1/3 is generated, preferably a reduction ratio of 1/5.
  • the transmission gears 132 and the ratchet driving mobile 14 are dimensioned so that the gear train formed between said transmission gears 132 and the ratchet, or between said transmission gears 132 and the ratchet driving mobile 14 , has a reduction ratio less than or equal to 1/50, preferably a reduction ratio equal to 1/25.
  • the invention therefore has the advantage of limiting the rotation speed of the satellites 131 for a given rotation speed of the oscillating mass 11 in the case of automatic winding and for a given rotation speed of the ratchet in the case of 'manual winding via a winding stem.
  • Such an arrangement makes it possible to extend the life of the satellites 131 while eliminating possible vibrations which could result from too high a rotation speed.
  • the arrangement and dimensioning of the input mobile 12, the reduction wheels 130, the transmission pinion 132 and the ratchet driving mobile 14 as previously described are advantageously enabled by the reduction in the dead angle resulting from the number of satellites 131.
  • the satellites 131 have been described in the form of toothed wheels in the present text, but they can take the form of any other type of ratchet.
  • the winding device 10 according to the invention may include other reduction mobiles and the input mobiles 12, reduction mobiles 13 and ratchet driver 14 can be arranged differently than the arrangement described and shown in the figures.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Retarders (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un dispositif (10) de remontage automatique d'un ressort de barillet d'une montre, comprenant une masse oscillante (11), un mobile d'entrée (12) cinématiquement lié à la masse oscillante (11), deux mobiles de réduction (13) et un mobile entraîneur de rochet (14), chaque mobile de réduction (13) comportant une roue de réduction (130) portant au moins quatre satellites (131), et un pignon de transmission (132) autour duquel est montée folle la roue de réduction (130), le mobile d'entrée (12) étant relié cinématiquement aux deux roues de réduction (130) de sorte que, quel que soit le sens de rotation dans lequel il est entraîné par la masse oscillante (11), il entraîne les deux roues de réduction (130) en rotation dans des sens différents l'une de l'autre, les satellites (131) formant, dans chacun desdits mobiles de réduction (13), des cliquets configurés pour solidariser en rotation le pignon de transmission (132) et la roue de réduction (130) seulement lorsque ladite roue de réduction (130) pivote dans un sens de rotation prédéfini, ledit sens de rotation prédéfini étant identique pour l'une et l'autre des roues de réduction (130).The invention relates to a device (10) for automatically winding a barrel spring of a watch, comprising an oscillating mass (11), an input mobile (12) kinematically linked to the oscillating mass (11), two reduction mobiles (13) and a ratchet driving mobile (14), each reduction mobile (13) comprising a reduction wheel (130) carrying at least four satellites (131), and a transmission pinion (132) around which the reduction wheel (130) is mounted idle, the input mobile (12) being kinematically connected to the two reduction wheels (130) so that, whatever the direction of rotation in which it is driven by the oscillating mass (11), it drives the two reduction wheels (130) in rotation in different directions from one another, the satellites (131) forming, in each of said reduction mobiles (13), pawls configured to secure in rotation the transmission pinion (132) and the reduction wheel (130) only when said reduction wheel (130) pivots in a predefined direction of rotation, said predefined direction of rotation being identical for one and the other of reduction wheels (130).

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention relève du domaine des mouvements horlogers, et concerne en particulier un dispositif de remontage automatique d'une montre.The invention relates to the field of watch movements, and in particular relates to a device for automatically winding a watch.

Arrière-plan technologiqueTechnology background

Les dispositifs de remontage automatique d'un ressort de barillet d'une montre sont connus pour permettre la transmission d'un couple à un rochet de barillet en vue du remontage dudit ressort, quel que soit le sens de rotation de la masse oscillante.The devices for automatically winding a barrel spring of a watch are known to allow the transmission of a torque to a barrel ratchet with a view to winding said spring, whatever the direction of rotation of the oscillating mass.

Des mécanismes à mobiles d'embrayage sont bien connus de l'état de la technique. Ils comportent deux mobiles d'embrayage composés chacun d'une roue montée folle autour d'un pignon et portant un cliquet. Les roues des mobiles d'embrayage sont en prise l'une avec l'autre, et l'une desdites roues, dite « première roue » engrène avec un mobile d'entrée solidaire en rotation de la masse oscillante. Les pignons sont en relation d'engrènement avec un mobile de sortie coopérant avec le rochet de barillet en rotation.Clutch mobile mechanisms are well known in the state of the art. They include two clutch mobiles, each composed of a wheel mounted loosely around a pinion and carrying a pawl. The wheels of the clutch wheels engage with each other, and one of said wheels, called the “first wheel”, meshes with an input wheel secured in rotation to the oscillating mass. The pinions are in meshing relationship with an output mobile cooperating with the barrel ratchet in rotation.

Lorsque la masse oscillante pivote dans un premier sens, elle entraîne la première roue en rotation dans un second sens, et le cliquet qu'elle porte est configuré pour solidariser en rotation ladite première roue et le pignon autour duquel elle est montée. Ledit pignon transmet par la suite un couple au mobile de sortie de sorte à l'entraîner en rotation dans le premier sens. Dans le même temps, la première roue entraîne en rotation la seconde roue dans le premier sens, et le cliquet porté par ladite seconde roue désolidarise sa rotation avec celle du pignon autour duquel elle est montée, ledit pignon étant entraîné en rotation dans le second sens par le mobile de sortie.When the oscillating mass pivots in a first direction, it drives the first wheel in rotation in a second direction, and the pawl which it carries is configured to secure in rotation said first wheel and the pinion around which it is mounted. Said pinion subsequently transmits a torque to the output mobile so as to cause it to rotate in the first direction. At the same time, the first wheel drives the second wheel in rotation in the first direction, and the pawl carried by said second wheel separates its rotation from that of the pinion around which it is mounted, said pinion being driven in rotation in the second direction. by the output mobile.

Au contraire, lorsque la masse oscillante pivote dans un second sens, elle entraîne la première roue en rotation dans le premier sens, le cliquet qu'elle porte désolidarisant en rotation ladite première roue et le pignon autour duquel elle est montée. Dans le même temps, la première roue entraîne en rotation la seconde roue dans le second sens, et le cliquet qu'elle porte solidarise sa rotation avec celle du pignon autour duquel elle est montée, ledit pignon entraînant alors en rotation le mobile de sortie dans le premier sens.On the contrary, when the oscillating mass pivots in a second direction, it drives the first wheel in rotation in the first direction, the pawl which it carries separating in rotation said first wheel and the pinion around which it is mounted. At the same time, the first wheel rotates the second wheel in the second direction, and the pawl which it carries secures its rotation with that of the pinion around which it is mounted, said pinion then rotating the output mobile in the first meaning.

De façon connue, le remontage du ressort de barillet est également possible manuellement, par action sur une tige de remontage cinématiquement liée au rochet de barillet, de sorte que sa rotation, ladite tige de remontage entraîne la rotation dudit rochet.In known manner, winding of the barrel spring is also possible manually, by action on a winding rod kinematically linked to the barrel ratchet, so that its rotation, said winding rod causes the rotation of said ratchet.

Lors de la rotation de la tige de remontage, le rochet de barillet entraîne les pignons des mobiles d'embrayage en rotation par l'intermédiaire du mobile de sortie. Lors de cette rotation des pignons, les cliquets de chacune des deux roues desdits mobiles d'embrayage sont sollicités de sorte à désolidariser en rotation lesdits pignons desdites roues.When the winding rod rotates, the barrel ratchet drives the pinions of the clutch wheels in rotation via the output wheel. During this rotation of the pinions, the pawls of each of the two wheels of said clutch wheels are actuated so as to separate said pinions from said wheels in rotation.

Du fait des rapports de réduction entre le rochet de barillet, le mobile de sortie, et les pignons, les cliquets sont soumis à des vitesses angulaires très importantes, ce qui est à l'origine de problèmes de lubrification et d'une usure prématurée desdits cliquets.Due to the reduction ratios between the barrel ratchet, the output mobile, and the pinions, the pawls are subjected to very high angular speeds, which is the cause of lubrication problems and premature wear of said ratchets.

En outre, ces mécanismes à mobiles d'embrayage présentent l'inconvénient de générer d'importants jeux mécaniques entre les cliquets et les dents des pignons des mobiles d'embrayage lors des changements de sens de rotation des roues des mobiles d'embrayage. Ces jeux, appelés « angles morts » par l'homme du métier, provoquent des bruits, des chocs, des vibrations et une usure prématurée des pièces en mouvement à l'origine de ces jeux. L'angle mort diminue également la capacité du dispositif de remontage à remonter le barillet car pendant que la masse parcoure cet angle, elle ne permet pas de remonter le barillet.Furthermore, these clutch mobile mechanisms have the disadvantage of generating significant mechanical clearance between the pawls and the teeth of the clutch mobile pinions during changes in the direction of rotation of the clutch mobile wheels. These games, called “blind spots” by those skilled in the art, cause noise, shocks, vibrations and premature wear of the moving parts causing these games. The blind angle also reduces the ability of the winding device to wind the barrel because while the mass travels through this angle, it does not allow the barrel to be wound.

L'angle mort est d'autant plus important que le rapport de réduction entre la masse oscillante et les roues des mobiles d'embrayage est important.The blind angle is all the more important as the reduction ratio between the oscillating mass and the wheels of the clutch wheels is important.

Résumé de l'inventionSummary of the invention

L'invention résout les inconvénients précités et concerne à cet effet un dispositif de remontage automatique d'un ressort de barillet d'une montre, comprenant une masse oscillante, un mobile d'entrée cinématiquement lié à la masse oscillante, deux mobiles de réduction et un mobile entraîneur de rochet. Chaque mobile de réduction comporte une roue de réduction portant au moins quatre satellites, et un pignon de transmission autour duquel est montée folle la roue de réduction. Le mobile d'entrée est relié cinématiquement aux deux roues de réduction de sorte que, quel que soit le sens de rotation dans lequel il est entraîné par la masse oscillante, il entraîne les deux roues de réduction en rotation dans des sens différents l'une de l'autre. Les satellites comprennent des dents de forme asymétrique, de sorte à former des cliquets configurés pour solidariser en rotation, dans chacun desdits mobiles de réduction, le pignon de transmission et la roue de réduction seulement lorsque ladite roue de réduction pivote dans un sens de rotation prédéfini, ledit sens de rotation prédéfini étant identique pour l'une et l'autre des roues de réduction.The invention resolves the aforementioned drawbacks and concerns for this purpose a device for automatically winding a barrel spring of a watch, comprising an oscillating mass, an input mobile kinematically linked to the oscillating mass, two reduction mobiles and a mobile ratchet trainer. Each reduction mobile comprises a reduction wheel carrying at least four satellites, and a transmission pinion around which the reduction wheel is mounted. The input mobile is kinematically connected to the two reduction wheels so that, whatever the direction of rotation in which it is driven by the oscillating mass, it drives the two reduction wheels to rotate in different directions. the other. The satellites comprise teeth of asymmetrical shape, so as to form pawls configured to secure in rotation, in each of said reduction wheels, the transmission pinion and the reduction wheel only when said reduction wheel pivots in a predefined direction of rotation , said predefined direction of rotation being identical for both of the reduction wheels.

Dans des modes particuliers de réalisation, l'invention peut comporter en outre l'une ou plusieurs des caractéristiques suivantes, prises isolément ou selon toutes les combinaisons techniquement possibles.In particular embodiments, the invention may also include one or more of the following characteristics, taken individually or in all technically possible combinations.

Dans des modes particuliers de réalisation, le mobile d'entrée et les roues de réduction sont dimensionnés de sorte qu'entre la masse oscillante et les roues de réduction un rapport de réduction supérieur ou égal à 1/3 est généré, et/ou les pignons de transmission et le mobile entraîneur de rochet sont dimensionnés de sorte que le train d'engrenages formé entre lesdits pignons de transmission et le rochet, ou le mobile entraîneur de rochet, présente un rapport de réduction inférieur ou égal à 1/50.In particular embodiments, the input mobile and the reduction wheels are dimensioned so that between the oscillating mass and the reduction wheels a reduction ratio greater than or equal to 1/3 is generated, and/or the transmission gears and the ratchet driving mobile are dimensioned so that the gear train formed between said transmission gears and the ratchet, or the ratchet driving mobile, has a reduction ratio less than or equal to 1/50.

Dans des modes particuliers de réalisation, l'une des roues de réduction est en relation d'engrènement avec le mobile d'entrée et avec l'autre roue de réduction.In particular embodiments, one of the reduction wheels is in meshing relationship with the input mobile and with the other reduction wheel.

Dans des modes particuliers de réalisation, les mobiles de réduction sont identiques l'un de l'autre.In particular embodiments, the reduction mobiles are identical to each other.

Dans des modes particuliers de réalisation, les pignons de transmission comportent une première denture coopérant avec les satellites et une seconde denture coopérant avec le mobile entraîneur de rochet.In particular embodiments, the transmission pinions comprise a first toothing cooperating with the satellites and a second toothing cooperating with the ratchet driving mobile.

Dans des modes particuliers de réalisation, la première denture comporte plus de dents que la seconde denture.In particular embodiments, the first toothing has more teeth than the second toothing.

Dans des modes particuliers de réalisation, dans chaque mobile de réduction, les satellites sont répartis régulièrement autour du pignon de transmission et sont chacun agencés dans des positions angulaires autour de leurs axes de rotations respectifs différentes les unes des autres.In particular embodiments, in each reduction mobile, the satellites are distributed regularly around the transmission pinion and are each arranged in angular positions around their respective axes of rotation different from each other.

Brève description des figuresBrief description of the figures

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée suivante donnée à titre d'exemple nullement limitatif, en référence aux dessins annexés dans lesquels :

  • la figure 1 représente une vue en perspective d'un dispositif de remontage d'un ressort de barillet d'une montre selon un exemple préféré de réalisation de l'invention ;
  • la figure 2 représente une vue de dessus d'un mobile de réduction du dispositif de la figure 1 ;
  • la figure 3 représente une vue en perspective du mobile de réduction de la figure 2.
Other characteristics and advantages of the invention will appear on reading the following detailed description given by way of non-limiting example, with reference to the appended drawings in which:
  • there figure 1 represents a perspective view of a device for winding a barrel spring of a watch according to a preferred embodiment of the invention;
  • there figure 2 represents a top view of a mobile reduction device of the figure 1 ;
  • there Figure 3 represents a perspective view of the mobile reduction of the figure 2 .

On note que les figures ne sont pas nécessairement dessinées à l'échelle pour des raisons de clarté.Note that the figures are not necessarily drawn to scale for reasons of clarity.

Description détaillée de l'inventionDetailed description of the invention

La figure 1 montre un dispositif 10 de remontage automatique d'un ressort de barillet d'une montre selon un exemple préféré de réalisation. Comme visible sur cette figure, le dispositif 10 de remontage comprend une masse oscillante 11, un mobile d'entrée 12 en prise avec la masse oscillante 11, deux mobiles de réduction 13 et un mobile entraîneur de rochet 14 destiné à coopérer avec un rochet (non représenté sur les figures).There figure 1 shows a device 10 for automatically winding a barrel spring of a watch according to a preferred embodiment. As visible in this figure, the winding device 10 comprises an oscillating mass 11, an input mobile 12 engaged with the oscillating mass 11, two reduction mobiles 13 and a ratchet driving mobile 14 intended to cooperate with a ratchet ( not shown in the figures).

Le mobile d'entrée 12 est en relation cinématique, par une roue d'entrée 120 dont il est doté, avec la masse oscillante 11 de sorte que lorsque cette dernière pivote, elle entraîne en rotation ledit mobile d'entrée 12. Préférentiellement, la roue d'entrée 120 est engrenée, à cet effet, avec une roue menante 110 rigidement fixée à la masse oscillante 11, c'est-à-dire sans degré de liberté. La roue menante 110 comporte, dans l'exemple préféré de réalisation de l'invention, un nombre de dents identique à celui de la roue d'entrée 120.The input wheel 12 is in kinematic relationship, through an input wheel 120 with which it is equipped, with the oscillating mass 11 so that when the latter pivots, it rotates said input wheel 12. Preferably, the input wheel 120 is meshed, for this purpose, with a driving wheel 110 rigidly fixed to the oscillating mass 11, that is to say without degree of freedom. The driving wheel 110 comprises, in the preferred embodiment of the invention, a number of teeth identical to that of the input wheel 120.

Le mobile d'entrée 12 comporte, en outre, un pignon 121 autour duquel est fixée rigidement la roue d'entrée 120, destiné à transmettre un mouvement de rotation dudit mobile d'entrée 12 à l'un des mobiles de réduction 13 avec lequel il est engrené.The input wheel 12 further comprises a pinion 121 around which the input wheel 120 is rigidly fixed, intended to transmit a rotational movement from said input wheel 12 to one of the reduction wheels 13 with which it is meshed.

En particulier, chaque mobile de réduction 13 comporte une roue de réduction 130 portant au moins quatre satellites 131, et un pignon de transmission 132 autour duquel est montée folle la roue de réduction 130, c'est-à-dire avec un degré de liberté en rotation. Comme le montre la figure 1, le mobile d'entrée 12 est relié cinématiquement aux deux roues de réduction 130 de sorte que, quel que soit le sens de rotation dans lequel il est entraîné par la masse oscillante 11, il entraîne les deux roues de réduction 130 en rotation selon des sens différents l'une de l'autre. A cet effet, dans l'exemple préféré de réalisation de l'invention tel que représenté sur la figure 1, l'une des roues de réduction 130 est en relation d'engrènement avec le mobile d'entrée 12, en particulier avec le pignon du mobile d'entrée 12, et avec l'autre roue de réduction 130.In particular, each reduction wheel 13 comprises a reduction wheel 130 carrying at least four satellites 131, and a transmission pinion 132 around which the reduction wheel 130 is mounted idle, that is to say with a degree of freedom in rotation. As shown in the figure 1 , the input mobile 12 is kinematically connected to the two reduction wheels 130 so that, whatever the direction of rotation in which it is driven by the oscillating mass 11, it drives the two reduction wheels 130 in rotation according to meanings different from each other. For this purpose, in the preferred embodiment of the invention as shown in the figure 1 , one of the reduction wheels 130 is in meshing relationship with the input mobile 12, in particular with the pinion of the input mobile 12, and with the other reduction wheel 130.

Préférentiellement, comme visible sur la figure 1, les mobiles de réduction 13 sont identiques l'un de l'autre. Ainsi, la fabrication et l'assemblage du dispositif sont facilités, et des économies d'échelle peuvent être réalisée.Preferably, as visible on the figure 1 , the reduction mobiles 13 are identical to each other. Thus, the manufacturing and assembly of the device are facilitated, and economies of scale can be achieved.

Les figures 2 et 3 représentent en détail un mobile de réduction 13 selon l'exemple préféré de réalisation de la présente invention.THE figures 2 And 3 represent in detail a reduction mobile 13 according to the preferred embodiment of the present invention.

Comme le montre la figure 2, les satellites 131 forment, dans chacun des mobiles de réduction 13, des cliquets configurés pour solidariser en rotation le pignon de transmission 132 et la roue de réduction 130 seulement lorsque ladite roue de réduction 130 pivote dans un sens de rotation prédéfini, ici le sens horaire. En particulier, lorsque la roue de réduction 130 pivote dans le sens horaire, l'un des satellites 131 se bloque en rotation contre le pignon de transmission 132 et applique un moment de force sur des dents du pignon de transmission 132 avec lesquelles il coopère, ce qui provoque la solidarisation en rotation dudit pignon de transmission 132 et de la roue de réduction 130.As shown in the figure 2 , the satellites 131 form, in each of the reduction wheels 13, pawls configured to secure in rotation the transmission pinion 132 and the reduction wheel 130 only when said reduction wheel 130 pivots in a predefined direction of rotation, here the direction hourly. In particular, when the reduction wheel 130 pivots clockwise, one of the satellites 131 is blocked in rotation against the transmission pinion 132 and applies a moment of force to the teeth of the transmission pinion 132 with which it cooperates, which causes said transmission pinion 132 and the reduction wheel 130 to become joined in rotation.

Cet effet technique est notamment dû à la forme asymétrique des dents des satellites 131. En particulier, lorsqu'un des satellites 131 se bloque en rotation, tel que celui représenté sur la droite sur la figure 2, le sommet d'une de ses dents est agencé en appui contre la tête d'une dent opposée du pignon de transmission 132, ladite tête constituant alors une butée.This technical effect is in particular due to the asymmetrical shape of the teeth of the satellites 131. In particular, when one of the satellites 131 is blocked in rotation, such as that shown on the right on the figure 2 , the top of one of its teeth is arranged to rest against the head of an opposite tooth of the transmission pinion 132, said head then constituting a stop.

A l'inverse, lorsque la roue de réduction 130 pivote dans le sens antihoraire, les satellites 131 engrènent avec le pignon de transmission 132, de sorte que la ladite roue de réduction 130 tourne autour dudit pignon de transmission 132 sans lui appliquer de moment de force, c'est-à-dire, sans l'entraîner en rotation.Conversely, when the reduction wheel 130 pivots in the counterclockwise direction, the satellites 131 mesh with the transmission pinion 132, so that said reduction wheel 130 rotates around said transmission pinion 132 without applying any torque to it. force, that is to say, without causing it to rotate.

Avantageusement, les mobiles de réduction 13 étant identiques l'un de l'autre, le sens de rotation prédéfini dans lequel les satellites 131 solidarisent en rotation la roue de réduction 130 et le pignon de transmission 132 est identique pour l'une et l'autre des roues de réduction 130. Les roues de réduction 130 étant l'une et l'autre entraînées en rotation selon des sens différents lors de la rotation de la masse oscillante 11, quel que soit le sens de rotation de cette dernière, l'un des pignons de transmission 132 est entraîné à pivoter dans le sens prédéfini, c'est-à-dire le sens horaire.Advantageously, the reduction mobiles 13 being identical to each other, the predefined direction of rotation in which the satellites 131 secure in rotation the reduction wheel 130 and the transmission pinion 132 is identical for both of the reduction wheels 130. The reduction wheels 130 being both driven in rotation in different directions during the rotation of the oscillating mass 11, whatever the direction of rotation of the latter, one of the transmission gears 132 is driven to pivot in the predefined direction, that is to say clockwise.

En particulier, dans l'exemple préféré de réalisation de l'invention, les pignons de transmission 132 comportent une première denture 1320 coopérant avec les satellites 131 et matérialisant une roue solaire, et une seconde denture 1321 coopérant avec le mobile entraîneur de rochet 14, la première denture 1320 comportant un nombre de dents plus important que celui de la seconde denture 1321. Les première et seconde dentures 1320 et 1321 sont avantageusement fixées sur un même arbre et sont fixes en rotation l'une par rapport à l'autre. Sur les figures, ces premières et secondes dentures 1320 et 1321 sont représentées schématiquement par leurs cylindres de référence.In particular, in the preferred embodiment of the invention, the transmission pinions 132 comprise a first toothing 1320 cooperating with the satellites 131 and materializing a sun wheel, and a second toothing 1321 cooperating with the ratchet driving mobile 14, the first toothing 1320 comprising a greater number of teeth than that of the second toothing 1321. The first and second teething 1320 and 1321 are advantageously fixed on the same shaft and are fixed in rotation relative to each other. In the figures, these first and second teeth 1320 and 1321 are represented schematically by their reference cylinders.

Avantageusement, dans chaque mobile de réduction 13, les satellites 131 sont répartis régulièrement autour du pignon de transmission 132 et sont chacun agencés dans des positions angulaires, autour de leurs axes de rotations respectifs, différentes les unes des autres. Comme visible sur la figure 2, chaque satellite 131 présente une orientation différente afin que l'engagement des dents des satellites 131 entre les dents du pignon de transmission 132 soit différent pour chacun desdits satellites 131. Ceci de sorte que, lors d'un changement de sens de rotation de la roue de réduction 130, le jeu mécanique existant entre les dents du satellite 131 qui vont appliquer un moment de force sur les dents du pignon de transmission 132, en particulier de la première denture 1320, et ces dernières, c'est-à-dire l'angle mort, soit minimisé. Par ailleurs, l'angle mort est également diminué grâce au nombre de satellites 131.Advantageously, in each reduction mobile 13, the satellites 131 are distributed regularly around the transmission pinion 132 and are each arranged in angular positions, around their respective axes of rotation, different from each other. As visible on the figure 2 , each satellite 131 has a different orientation so that the engagement of the teeth of the satellites 131 between the teeth of the transmission pinion 132 is different for each of said satellites 131. This so that, during a change in direction of rotation of the reduction wheel 130, the mechanical clearance existing between the teeth of the satellite 131 which will apply a moment of force on the teeth of the transmission pinion 132, in particular of the first toothing 1320, and the latter, that is to say the blind spot is minimized. Furthermore, the blind spot is also reduced thanks to the number of 131 satellites.

Préférentiellement, le mobile d'entrée 12 et les roues de réduction 130 sont dimensionnés de sorte qu'entre la masse oscillante 11 et les roues de réduction 130 un rapport de réduction supérieur ou égal à 1/3 soit généré, préférentiellement un rapport de réduction de 1/5. Par ailleurs, les pignons de transmission 132 et le mobile entraîneur de rochet 14 sont dimensionnés de sorte que le train d'engrenages formé entre lesdits pignons de transmission 132 et le rochet, ou entre lesdits pignons de transmission 132 et le mobile entraîneur de rochet 14, présente un rapport de réduction inférieur ou égal à 1/50, préférentiellement un rapport de réduction égal à 1/25.Preferably, the input mobile 12 and the reduction wheels 130 are dimensioned so that between the oscillating mass 11 and the reduction wheels 130 a reduction ratio greater than or equal to 1/3 is generated, preferably a reduction ratio of 1/5. Furthermore, the transmission gears 132 and the ratchet driving mobile 14 are dimensioned so that the gear train formed between said transmission gears 132 and the ratchet, or between said transmission gears 132 and the ratchet driving mobile 14 , has a reduction ratio less than or equal to 1/50, preferably a reduction ratio equal to 1/25.

L'invention présente par conséquent l'avantage de limiter la vitesse de rotation des satellites 131 pour une vitesse de rotation donnée de la masse oscillante 11 dans le cas d'un remontage automatique et pour une vitesse de rotation donnée du rochet dans le cas d'un remontage manuel via une tige de remontage. Une telle disposition permet de prolonger la durée de vie des satellites 131 tout en supprimant d'éventuelles vibrations pouvant résulter d'une vitesse de rotation trop importante.The invention therefore has the advantage of limiting the rotation speed of the satellites 131 for a given rotation speed of the oscillating mass 11 in the case of automatic winding and for a given rotation speed of the ratchet in the case of 'manual winding via a winding stem. Such an arrangement makes it possible to extend the life of the satellites 131 while eliminating possible vibrations which could result from too high a rotation speed.

L'agencement et le dimensionnement du mobiles d'entrée 12, des roues de réduction 130, du pignon de transmission 132 et du mobile entraîneur de rochet 14 tels que précédemment décrits sont avantageusement permis par la diminution de l'angle mort résultant du nombre de satellites 131.The arrangement and dimensioning of the input mobile 12, the reduction wheels 130, the transmission pinion 132 and the ratchet driving mobile 14 as previously described are advantageously enabled by the reduction in the dead angle resulting from the number of satellites 131.

De manière plus générale, il est à noter que les modes de mise en œuvre et de réalisation considérés ci-dessus ont été décrits à titre d'exemples non limitatifs, et que d'autres variantes sont par conséquent envisageables.More generally, it should be noted that the modes of implementation and embodiment considered above have been described by way of non-limiting examples, and that other variants are therefore possible.

Notamment, les satellites 131 ont été décrits sous la forme de roues dentées dans le présent texte, mais ils peuvent prendre la forme de tout autre type de cliquet. Par ailleurs, le dispositif 10 de remontage selon l'invention peut comporter d'autres mobiles réducteurs et les mobiles d'entrée 12, de réduction 13 et entraîneur de rochet 14 peuvent être agencés différemment que l'agencement décrit et représenté sur les figures.In particular, the satellites 131 have been described in the form of toothed wheels in the present text, but they can take the form of any other type of ratchet. Furthermore, the winding device 10 according to the invention may include other reduction mobiles and the input mobiles 12, reduction mobiles 13 and ratchet driver 14 can be arranged differently than the arrangement described and shown in the figures.

Claims (7)

Dispositif (10) de remontage automatique d'un ressort de barillet d'une montre caractérisée en ce qu'il comprend une masse oscillante (11), un mobile d'entrée (12) cinématiquement lié à la masse oscillante (11), deux mobiles de réduction (13) et un mobile entraîneur de rochet (14), chaque mobile de réduction (13) comportant une roue de réduction (130) portant au moins quatre satellites (131), et un pignon de transmission (132) autour duquel est montée folle la roue de réduction (130), le mobile d'entrée (12) étant relié cinématiquement aux deux roues de réduction (130) de sorte que, quel que soit le sens de rotation dans lequel il est entraîné par la masse oscillante (11), il entraîne les deux roues de réduction (130) en rotation dans des sens différents l'une de l'autre, les satellites (131) comprenant des dents de forme asymétrique, de sorte à former des cliquets configurés pour solidariser en rotation, dans chacun desdits mobiles de réduction (13), le pignon de transmission (132) et la roue de réduction (130) seulement lorsque ladite roue de réduction (130) pivote dans un sens de rotation prédéfini, ledit sens de rotation prédéfini étant identique pour l'une et l'autre des roues de réduction (130).Device (10) for automatically winding a barrel spring of a watch characterized in that it comprises an oscillating mass (11), an input mobile (12) kinematically linked to the oscillating mass (11), two reduction mobiles (13) and a ratchet driving mobile (14), each reduction mobile (13) comprising a reduction wheel (130) carrying at least four satellites (131), and a transmission pinion (132) around which the reduction wheel (130) is mounted idle, the input mobile (12) being kinematically connected to the two reduction wheels (130) so that, whatever the direction of rotation in which it is driven by the oscillating mass (11), it drives the two reduction wheels (130) in rotation in different directions from each other, the satellites (131) comprising teeth of asymmetrical shape, so as to form pawls configured to secure together in rotation, in each of said reduction wheels (13), the transmission pinion (132) and the reduction wheel (130) only when said reduction wheel (130) pivots in a predefined direction of rotation, said predefined direction of rotation being identical for both of the reduction wheels (130). Dispositif (10) selon la revendication 1, dans lequel le mobile d'entrée (12) et les roues de réduction (130) sont dimensionnés de sorte qu'entre la masse oscillante (11) et les roues de réduction (130) un rapport de réduction supérieur ou égal à 1/3 soit généré, et/ou dans lequel les pignons de transmission (132) et le mobile entraîneur de rochet (14) sont dimensionnés de sorte que le train d'engrenages formé entre lesdits pignons de transmission (132) et le rochet présente un rapport de réduction inférieur ou égal à 1/50.Device (10) according to claim 1, in which the input mobile (12) and the reduction wheels (130) are dimensioned so that between the oscillating mass (11) and the reduction wheels (130) a ratio reduction greater than or equal to 1/3 is generated, and/or in which the transmission gears (132) and the ratchet driving mobile (14) are dimensioned so that the gear train formed between said transmission gears ( 132) and the ratchet has a reduction ratio less than or equal to 1/50. Dispositif (10) selon la revendication 1 ou 2, dans lequel l'une des roues de réduction (130) est en relation d'engrènement avec le mobile d'entrée (12) et avec l'autre roue de réduction (130).Device (10) according to claim 1 or 2, wherein one of the reduction wheels (130) is in meshing relationship with the input mobile (12) and with the other reduction wheel (130). Dispositif (10) selon l'une des revendications 1 à 3, dans lequel les mobiles de réduction (13) sont identiques l'un de l'autre.Device (10) according to one of claims 1 to 3, in which the reduction mobiles (13) are identical to each other. Dispositif (10) selon l'une des revendications 1 à 4, dans lequel les pignons de transmission (132) comportent une première denture (1320) coopérant avec les satellites (131) et une seconde denture (1321) coopérant avec le mobile entraîneur de rochet (14).Device (10) according to one of claims 1 to 4, in which the transmission pinions (132) comprise a first toothing (1320) cooperating with the satellites (131) and a second toothing (1321) cooperating with the driving mobile of ratchet (14). Dispositif (10) selon la revendication 5, dans laquelle la première denture (1320) comporte plus de dents que la seconde denture (1321).Device (10) according to claim 5, in which the first toothing (1320) has more teeth than the second toothing (1321). Dispositif (10) selon l'une des revendications 1 à 6, dans lequel, dans chaque mobile de réduction (13), les satellites (131) sont répartis régulièrement autour du pignon de transmission (132) et sont chacun agencés dans des positions angulaires autour de leurs axes de rotations respectifs différentes les unes des autres.Device (10) according to one of claims 1 to 6, in which, in each reduction mobile (13), the satellites (131) are distributed regularly around the transmission pinion (132) and are each arranged in angular positions around their respective axes of rotation different from each other.
EP22180159.0A 2022-06-21 2022-06-21 Device for automatic winding of a barrel spring of a timepiece movement Pending EP4296788A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP22180159.0A EP4296788A1 (en) 2022-06-21 2022-06-21 Device for automatic winding of a barrel spring of a timepiece movement
US18/310,052 US20230408978A1 (en) 2022-06-21 2023-05-01 Device for automatic winding of a barrel spring of a horological movement
CN202310527499.0A CN117270363A (en) 2022-06-21 2023-05-11 Automatic winding device for barrel spring of timepiece movement
JP2023099176A JP7572508B2 (en) 2022-06-21 2023-06-16 Automatic winding device for the barrel spring of a watch movement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22180159.0A EP4296788A1 (en) 2022-06-21 2022-06-21 Device for automatic winding of a barrel spring of a timepiece movement

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EP4296788A1 true EP4296788A1 (en) 2023-12-27

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EP22180159.0A Pending EP4296788A1 (en) 2022-06-21 2022-06-21 Device for automatic winding of a barrel spring of a timepiece movement

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US (1) US20230408978A1 (en)
EP (1) EP4296788A1 (en)
JP (1) JP7572508B2 (en)
CN (1) CN117270363A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2897000A1 (en) * 2014-01-15 2015-07-22 Audemars Piguet (Renaud et Papi) SA Reverser for timepiece
EP3104232A1 (en) * 2015-06-11 2016-12-14 Société anonyme de la Manufacture d'Horlogerie Audemars Piguet & Cie Timepiece reverser and self-winding watch comprising same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2897000A1 (en) * 2014-01-15 2015-07-22 Audemars Piguet (Renaud et Papi) SA Reverser for timepiece
EP3104232A1 (en) * 2015-06-11 2016-12-14 Société anonyme de la Manufacture d'Horlogerie Audemars Piguet & Cie Timepiece reverser and self-winding watch comprising same

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JP2024000985A (en) 2024-01-09
CN117270363A (en) 2023-12-22
US20230408978A1 (en) 2023-12-21
JP7572508B2 (en) 2024-10-23

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