EP4379475A1 - Winding device, in particular for a timepiece barrel, provided with a disengageable winding gear - Google Patents

Winding device, in particular for a timepiece barrel, provided with a disengageable winding gear Download PDF

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Publication number
EP4379475A1
EP4379475A1 EP22210930.8A EP22210930A EP4379475A1 EP 4379475 A1 EP4379475 A1 EP 4379475A1 EP 22210930 A EP22210930 A EP 22210930A EP 4379475 A1 EP4379475 A1 EP 4379475A1
Authority
EP
European Patent Office
Prior art keywords
winding
ratchet
barrel
gear
winding gear
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
EP22210930.8A
Other languages
German (de)
French (fr)
Inventor
Pierre Cusin
Laurent Jeanneret
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.)
Nivarox Far SA
Original Assignee
Nivarox Far 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 Nivarox Far SA filed Critical Nivarox Far SA
Priority to EP22210930.8A priority Critical patent/EP4379475A1/en
Priority to US18/513,812 priority patent/US20240184247A1/en
Priority to CN202311559780.9A priority patent/CN118131588A/en
Priority to JP2023198867A priority patent/JP2024080640A/en
Publication of EP4379475A1 publication Critical patent/EP4379475A1/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
    • G04B5/24—Protecting means preventing overwinding
    • 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
    • G04B11/02—Devices allowing the motion of a rotatable part in only one direction
    • G04B11/022—Devices allowing the motion of a rotatable part in only one direction with a ratchet which makes contact with the rotating member by means of teeth
    • G04B11/024—Devices allowing the motion of a rotatable part in only one direction with a ratchet which makes contact with the rotating member by means of teeth rotatable about a fixed axis by means of spring action

Definitions

  • the invention relates to a winding device, in particular a watch barrel, provided with a disengageable winding train.
  • the invention also relates to a watch movement comprising such a winding device.
  • Most current mechanical watches with automatic winding generally include an oscillating mass driving a gear train by gravity, the rotation of which makes it possible to arm a leaf spring, the barrel spring, wound in a drum around an axis, by drive of said axis. Rotation is usually forced in one direction, and is prevented from going backwards by a ratchet.
  • such barrels generally have a system for limiting the winding of the barrel spring.
  • This limitation is generally carried out by sliding the last external leaf of the spring against the internal wall of the drum. When the spring is fully cocked and wound around the barrel winding shaft, the last wound turn presses against the outer wall of the drum.
  • the aim of the present invention is to overcome all or part of the drawbacks cited above by proposing a winding device provided with a system for limiting the winding of a spring, which replaces a system based on the sliding of a spring. a blade against notches in an internal wall of the drum.
  • the invention relates to a winding device, in particular a watch barrel provided with a spring, comprising a ratchet mounted on a rotary winding shaft, the rotary winding shaft being for example a winding shaft of the barrel whose rotation arms the barrel, and a winding gear meshing with the ratchet, the rotation of the winding gear causing the rotation of the ratchet and that of the winding shaft rotary by application of a torque to the ratchet, the winding gear being movable between an engaged position in which it drives the ratchet and a disengaged position in which it does not drive the ratchet.
  • the invention is remarkable in that the winding train is mounted on a spring exerting a restoring force on the winding train to keep it in the engaged position.
  • the ratchet is no longer driven by the winding gear, because the latter is no longer driven.
  • the winding gear moves and no longer transmits the rotational torque to the ratchet, so that the ratchet no longer turns.
  • the risks of premature wear of the barrel are avoided, because the limiting device is arranged upstream and outside the barrel.
  • the ratchet comprises a first peripheral toothing cooperating with a second toothing of the winding gear, when the torque applied to the ratchet is substantially less than a threshold value.
  • the winding train moves into the disengaged position, when the torque applied to the ratchet substantially exceeds a threshold value, in particular when the barrel is fully cocked.
  • the winding gear meshes with a winding actuation mobile, when it is in the engaged position, and does not mesh with the winding actuation mobile, when it is in the engaged position. is in the disengaged position.
  • the winding train is arranged next to the ratchet, and preferably extends in the same plane as the ratchet in the engaged position.
  • the winding train carries out a lateral movement between the engaged position and the disengaged position.
  • the winding train carries out a rotary movement to move from the engaged position to the disengaged position and vice versa.
  • the spring comprises a flexible guide forming a virtual pivot, the winding train being suspended by the flexible guide, the flexible guide exerting a radial return force on the winding train in the direction of the actuation mobile.
  • the flexible guide is provided with two uncrossed flexible blades and a rigid movable element supporting the winding gear, the two uncrossed flexible blades connecting the rigid movable element to a stationary support of the winding device. reassembly.
  • the ratchet is mounted integrally on the barrel, the rotating winding shaft being the winding shaft of the barrel making it possible to arm the spring of the barrel.
  • the invention also relates to a watch movement comprising a barrel, the watch movement comprising such a device for winding the barrel.
  • THE figures 1 to 3 represent an embodiment of a winding device 1, here a watch barrel 2, according to the invention.
  • the winding device 1 of the barrel 2 comprises a ratchet 3 and a winding gear 4.
  • the winding gear 4 meshes with the ratchet 3, so that when the winding gear 4 is rotated in a first direction, the ratchet 3 is rotated in a second direction opposite to the first direction.
  • the ratchet 3 is mounted integrally on a winding shaft, the winding shaft allowing the winding of the barrel 2.
  • the winding shaft is preferably cylindrical.
  • the winding shaft is the winding shaft of the barrel 2, the ratchet 3 being arranged on the barrel 2.
  • the ratchet 3 comprises a hub 7 mounted integrally on the winding shaft.
  • the winding shaft is not mounted on the barrel, the winding shaft comprising a pinion meshing with a mobile driving the winding shaft of the barrel to arm the spring, if the ratchet is not mounted on the barrel.
  • the winding gear 4 is arranged next to the ratchet 3, and preferably extends in the same plane as the ratchet 3.
  • the ratchet 3 comprises a first external toothing 11 distributed around the ratchet 3.
  • the first toothing 11 cooperates with a second toothing 12 arranged on the winding gear 4.
  • the winding gear 4 comprises a pinion provided with the second toothing 12 arranged on its periphery.
  • the barrel 2 includes a spiral spring (not shown in the figures), arranged inside the barrel 2, which must be armed, either by an automatic winding system, or by a manual winding system.
  • the winding device 1 further comprises a system of cogs 13, for example driven by an automatic winding mass (not shown in the figures) of the watch movement.
  • the cog system 13 can also be driven by a winding stem (not shown in the figures) operable by means of a crown, in the case of manual winding.
  • An actuating mobile 21 for winding the cog system 13 comprises a third toothing 14 meshing with the second toothing 12 of the winding cog 4.
  • the rotation of the winding gear 4 generates the rotation of the ratchet 3, and therefore of the winding shaft, during the winding of the barrel 2.
  • the winding gear 4 is movable between an engaged position in which it drives the ratchet 3 and a disengaged position in which it does not engage with the ratchet 3.
  • the winding gear 4 meshes with the winding actuation mobile 21, when it is in the engaged position, and it does not mesh with the winding actuation mobile 21, when it is in the disengaged position.
  • the actuating mobile 21 drives the winding gear 4, and the winding gear 4 drives the ratchet 3. While in the disengaged position, the actuating mobile 21 turns empty and does not drive not the winding gear 4, which is at a distance from the actuation mobile 21, so that the ratchet 3 is no longer driven by the winding gear 4.
  • the winding gear 4 is mounted on a spring 5 exerting a force on the winding gear 4 to keep it in the engaged position.
  • the spring 5 comprises a flexible guide forming a virtual pivot, the winding gear 4 being suspended from the flexible guide.
  • the flexible guide is provided with two uncrossed flexible blades 15 and a rigid movable element 16 supporting the winding gear 4.
  • the two flexible blades 15 connect the rigid movable element 16 to a stationary support 17 of the winding device 1.
  • the immobile support 17 comprises for example a bearing of the ratchet 3.
  • the flexible blades 15 meet and are connected to the bearing on the one hand, and spread out to the ends of the rigid movable element 16.
  • the rigid movable element 16 here has the shape of an arc of a circle.
  • the flexible guide exerts a radial restoring force on the winding gear 40 in the direction of the actuating mobile 21.
  • winding gear 4 moves to the disengaged position, when the torque applied to the ratchet 3 significantly exceeds a threshold value, in particular when the barrel 2 is fully cocked.
  • the winding gear when the torque significantly exceeds a threshold value, the winding gear performs a rotary movement to move from the engaged position to the disengaged position.
  • the winding gear 4 carries out a lateral movement between the engaged position and the disengaged position.
  • the winding gear 4 performs a rotary movement around the virtual pivot to move from the engaged position to the disengaged position and vice versa.
  • the winding torque exerted on the ratchet 3 is less than the threshold value, so that the winding gear 4 remains in the engaged position and meshes with the actuating mobile 21.
  • the ratchet 3 and the winding shaft are driven by the winding gear 4.
  • the first peripheral toothing 11 of the ratchet 3 cooperates with the second toothing 12 of the winding gear 4 when the torque applied to the ratchet 3 is substantially less than a threshold value.
  • the barrel 2 further comprises a fourth peripheral toothing 18 configured to cooperate with a fourth toothing 19 of a mobile 20 of the watch movement.
  • the mobile 20 is for example an average wheel. Once armed, the barrel 2 supplies the energy necessary for the operation of the clock movement via the mobile 20.
  • the invention also relates to a watch movement, not shown in the figures, the movement comprising a barrel and a device for winding the barrel as described above.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Abstract

L'invention concerne un dispositif de remontage (1), notamment d'un barillet (2) doté d'un ressort, comprenant un rochet (3) monté solidaire sur un arbre de remontage rotatif, l'arbre de remontage rotatif étant par exemple un arbre de remontage du barillet (2) dont la rotation arme le barillet (2), et un rouage de remontage (4) engrenant avec le rochet (3), la rotation du rouage de remontage (4) entraînant la rotation du rochet (3) et celui de l'arbre de remontage rotatif par application d'un couple sur le rochet (3), le rouage de remontage (4) étant mobile entre une position embrayée dans laquelle il entraîne le rochet (3) et une position débrayée dans laquelle il n'entraîne pas le rochet (3), le rouage de remontage (4) étant monté sur un ressort (5) exerçant une force de rappel sur le rouage de remontage (4) pour le maintenir dans la position embrayée.L'invention concerne aussi un mouvement d'horlogerie comprenant un tel dispositif de remontage (1).The invention relates to a winding device (1), in particular a barrel (2) provided with a spring, comprising a ratchet (3) mounted integrally on a rotary winding shaft, the rotary winding shaft being for example a barrel winding shaft (2) whose rotation arms the barrel (2), and a winding gear (4) meshing with the ratchet (3), the rotation of the winding gear (4) causing the rotation of the ratchet ( 3) and that of the rotating winding shaft by applying a torque to the ratchet (3), the winding gear (4) being movable between an engaged position in which it drives the ratchet (3) and a disengaged position in which it does not drive the ratchet (3), the winding gear (4) being mounted on a spring (5) exerting a restoring force on the winding gear (4) to keep it in the engaged position.L The invention also relates to a watch movement comprising such a winding device (1).

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention se rapporte à un dispositif de remontage, notamment d'un barillet d'horlogerie, muni d'un rouage de remontage débrayable.The invention relates to a winding device, in particular a watch barrel, provided with a disengageable winding train.

L'invention se rapporte également à un mouvement d'horlogerie comportant un tel dispositif de remontage.The invention also relates to a watch movement comprising such a winding device.

Arrière-plan technologiqueTechnology background

La plupart des montres mécaniques actuelles à remontage automatique comportent en général une masse oscillante entraînant un rouage par gravité, dont la rotation permet d'armer une lame-ressort, le ressort de barillet, enroulé dans un tambour autour d'un axe, par entraînement dudit axe. La rotation est généralement forcée dans un seul sens, et est empêchée de revenir en arrière par un cliquet.Most current mechanical watches with automatic winding generally include an oscillating mass driving a gear train by gravity, the rotation of which makes it possible to arm a leaf spring, the barrel spring, wound in a drum around an axis, by drive of said axis. Rotation is usually forced in one direction, and is prevented from going backwards by a ratchet.

Cependant, lorsque le ressort est complètement armé, il faut éviter un sur-armage susceptible de provoquer une casse du ressort, ou un rebat de l'oscillateur, durant lequel l'amplitude d'oscillation augmentant au point que le balancier vient en butée contre les cornes de l'ancre, et provoque une dérive de marche due au rebond du balancier contre ces butées.However, when the spring is fully charged, it is necessary to avoid over-charging likely to cause the spring to break, or the oscillator to flutter, during which the amplitude of oscillation increases to the point that the balance abuts against the horns of the anchor, and causes a drift due to the rebound of the balance against these stops.

Pour éviter ces risques, de tels barillets possèdent en général un système de limitation de l'armage du ressort de barillet.To avoid these risks, such barrels generally have a system for limiting the winding of the barrel spring.

Cette limitation s'opère en général par glissement de la dernière lame externe du ressort contre la paroi interne du tambour. Lorsque le ressort est complètement armé et enroulé autour de l'arbre de remontage du barillet, la dernière spire enroulée appuie contre la paroi externe du tambour.This limitation is generally carried out by sliding the last external leaf of the spring against the internal wall of the drum. When the spring is fully cocked and wound around the barrel winding shaft, the last wound turn presses against the outer wall of the drum.

Ainsi, lorsque le couple d'armage dépasse le couple de frottement contre la paroi de la dernière spire, cette dernière se met à glisser. Pour éviter un glissement incontrôlé, des encoches permettent à l'extrémité de la lame d'interrompre son glissement, dès que le couple d'armage a suffisamment baissé.Thus, when the arming torque exceeds the friction torque against the wall of the last turn, the latter begins to slide. To avoid uncontrolled sliding, notches allow the end of the blade to stop sliding as soon as the winding torque has dropped sufficiently.

Néanmoins, l'inconvénient d'un tel système réside dans le processus de glissement-frottement de la dernière spire à l'intérieur du tambour. En effet, lorsque le mécanisme à entraîner requiert un couple important, les efforts d'appui et le frottement de la lame du ressort contre la paroi sont accentués, ce qui conduit à de l'usure et une dégradation des performances du barillet, même en présence de graisse, qui se retrouve évacuée hors de la piste de frottement après un certain temps.However, the disadvantage of such a system lies in the sliding-friction process of the last turn inside the drum. Indeed, when the mechanism to be driven requires a significant torque, the support forces and the friction of the leaf of the spring against the wall are accentuated, which leads to wear and a deterioration in the performance of the barrel, even in presence of grease, which is evacuated out of the friction track after a certain time.

En outre, au sein d'un barillet automatique, il est nécessaire de répondre à des critères contradictoires pour maximiser le rendement, tels des frottements réduits entre les spires, et des frottements importants entre le ressort et le tambour pour garantir un bon couple d'armage.Furthermore, within an automatic barrel, it is necessary to meet contradictory criteria to maximize performance, such as reduced friction between the turns, and significant friction between the spring and the drum to guarantee a good torque. arming.

Il faut encore éviter les détériorations sur le tambour, telles que l'arrachement du revêtement, la formation de cambouis, l'usure des parois sous la pression de la lame du ressort complètement armée.It is also necessary to avoid damage to the drum, such as tearing of the coating, the formation of sludge, wear of the walls under the pressure of the fully armed spring blade.

Résumé de l'inventionSummary of the invention

Le but de la présente invention est de pallier tout ou partie des inconvénients cités précédemment en proposant un dispositif de remontage muni d'un système de limitation de l'armage d'un ressort, qui se substitue à un système basé sur le glissement d'une lame contre des encoches d'une paroi interne du tambour.The aim of the present invention is to overcome all or part of the drawbacks cited above by proposing a winding device provided with a system for limiting the winding of a spring, which replaces a system based on the sliding of a spring. a blade against notches in an internal wall of the drum.

A cet effet, l'invention se rapporte à un dispositif de remontage, notamment d'un barillet d'horlogerie doté d'un ressort, comprenant un rochet monté sur un arbre de remontage rotatif, l'arbre de remontage rotatif étant par exemple un arbre de remontage du barillet dont la rotation arme le barillet, et un rouage de remontage engrenant avec le rochet, la rotation du rouage de remontage entrainant la rotation du rochet et celui de l'arbre de remontage rotatif par application d'un couple sur le rochet, le rouage de remontage étant mobile entre une position embrayée dans laquelle il entraîne le rochet et une position débrayée dans laquelle il n'entraîne pas le rochet.For this purpose, the invention relates to a winding device, in particular a watch barrel provided with a spring, comprising a ratchet mounted on a rotary winding shaft, the rotary winding shaft being for example a winding shaft of the barrel whose rotation arms the barrel, and a winding gear meshing with the ratchet, the rotation of the winding gear causing the rotation of the ratchet and that of the winding shaft rotary by application of a torque to the ratchet, the winding gear being movable between an engaged position in which it drives the ratchet and a disengaged position in which it does not drive the ratchet.

L'invention est remarquable en ce que le rouage de remontage est monté sur un ressort exerçant une force de rappel sur le rouage de remontage pour le maintenir dans la position embrayée.The invention is remarkable in that the winding train is mounted on a spring exerting a restoring force on the winding train to keep it in the engaged position.

Ainsi, en déplaçant le rouage de remontage dans la position débrayée, le rochet n'est plus entraîné par le rouage de remontage, car ce dernier n'est plus entraîné. Par exemple, lorsque le couple appliqué sur le rochet est trop élevé, en particulier quand le barillet est complètement armé, le rouage de remontage se déplace et ne transmet plus le couple de rotation au rochet, de sorte que le rochet ne tourne plus.Thus, by moving the winding gear into the disengaged position, the ratchet is no longer driven by the winding gear, because the latter is no longer driven. For example, when the torque applied to the ratchet is too high, particularly when the barrel is fully cocked, the winding gear moves and no longer transmits the rotational torque to the ratchet, so that the ratchet no longer turns.

Grâce à l'invention, on évite les risques d'usure prématurée du barillet, car le dispositif de limitation est agencé en amont et à l'extérieure du barillet. De plus, on évite d'utiliser les dispositifs de limitation de l'armage classiques, basés sur un frottement du ressort à l'intérieur du barillet.Thanks to the invention, the risks of premature wear of the barrel are avoided, because the limiting device is arranged upstream and outside the barrel. In addition, we avoid using conventional winding limitation devices, based on friction of the spring inside the barrel.

Selon une forme de réalisation particulière de l'invention, le rochet comprend une première denture périphérique coopérant avec une deuxième denture du rouage de remontage, lorsque le couple appliqué sur le rochet est sensiblement inférieur à une valeur seuil.According to a particular embodiment of the invention, the ratchet comprises a first peripheral toothing cooperating with a second toothing of the winding gear, when the torque applied to the ratchet is substantially less than a threshold value.

Selon une forme de réalisation particulière de l'invention, le rouage de remontage se déplace dans la position débrayée, lorsque le couple appliqué sur le rochet excède sensiblement une valeur seuil, en particulier lorsque le barillet est complètement armé.According to a particular embodiment of the invention, the winding train moves into the disengaged position, when the torque applied to the ratchet substantially exceeds a threshold value, in particular when the barrel is fully cocked.

Selon une forme de réalisation particulière de l'invention, le rouage de remontage engrène avec un mobile d'actionnement du remontage, lorsqu'il est en position embrayée, et n'engrène pas avec le mobile d'actionnement du remontage, lorsqu'il est en position débrayée.According to a particular embodiment of the invention, the winding gear meshes with a winding actuation mobile, when it is in the engaged position, and does not mesh with the winding actuation mobile, when it is in the engaged position. is in the disengaged position.

Selon une forme de réalisation particulière de l'invention, le rouage de remontage est agencé à côté du rochet, et s'étend de préférence dans le même plan que le rochet en position embrayée.According to a particular embodiment of the invention, the winding train is arranged next to the ratchet, and preferably extends in the same plane as the ratchet in the engaged position.

Selon une forme de réalisation particulière de l'invention, le rouage de remontage effectue un déplacement latéral entre la position embrayée et la position débrayée.According to a particular embodiment of the invention, the winding train carries out a lateral movement between the engaged position and the disengaged position.

Selon une forme de réalisation particulière de l'invention, le rouage de remontage effectue un mouvement rotatif pour passer de la position embrayée à la position débrayée et réciproquement.According to a particular embodiment of the invention, the winding train carries out a rotary movement to move from the engaged position to the disengaged position and vice versa.

Selon une forme de réalisation particulière de l'invention, le ressort comprend un guidage flexible formant un pivot virtuel, le rouage de remontage étant suspendu par le guidage flexible, le guidage flexible exerçant une force de rappel radiale sur le rouage de remontage en direction du mobile d'actionnement.According to a particular embodiment of the invention, the spring comprises a flexible guide forming a virtual pivot, the winding train being suspended by the flexible guide, the flexible guide exerting a radial return force on the winding train in the direction of the actuation mobile.

Selon une forme de réalisation particulière de l'invention, le guidage flexible est muni de deux lames flexibles décroisées et un élément mobile rigide supportant le rouage de remontage, les deux lames flexibles décroisées reliant l'élément mobile rigide à un support immobile du dispositif de remontage.According to a particular embodiment of the invention, the flexible guide is provided with two uncrossed flexible blades and a rigid movable element supporting the winding gear, the two uncrossed flexible blades connecting the rigid movable element to a stationary support of the winding device. reassembly.

Selon une forme de réalisation particulière de l'invention, le rochet est monté solidaire sur le barillet, l'arbre de remontage rotatif étant l'arbre de remontage du barillet permettant d'armer le ressort du barillet.According to a particular embodiment of the invention, the ratchet is mounted integrally on the barrel, the rotating winding shaft being the winding shaft of the barrel making it possible to arm the spring of the barrel.

L'invention se rapporte également à un mouvement horloger comprenant un barillet, le mouvement horloger comportant un tel dispositif de remontage du barillet.The invention also relates to a watch movement comprising a barrel, the watch movement comprising such a device for winding the barrel.

Brève description des figuresBrief description of the figures

Les buts, avantages et caractéristiques de la présente invention apparaîtront à la lecture de plusieurs formes de réalisation données uniquement à titre d'exemples non limitatifs, en référence aux dessins annexés dans lesquels :

  • la figure 1 représente schématiquement une vue de dessus d'un dispositif de remontage selon un mode de réalisation de l'invention, en position embrayée,
  • la figure 2 représente schématiquement une vue de dessus du dispositif de remontage selon le mode de réalisation de l'invention de la figure 1, en cours de remontage du barillet, et
  • la figure 3 représente schématiquement une vue de dessus du dispositif de remontage selon le mode de réalisation de l'invention de la figure 1, en position débrayée, notamment lorsque le ressort du barillet est complètement armé.
The aims, advantages and characteristics of the present invention will appear on reading several given embodiments solely by way of non-limiting examples, with reference to the appended drawings in which:
  • there figure 1 schematically represents a top view of a winding device according to one embodiment of the invention, in the engaged position,
  • there figure 2 schematically represents a top view of the winding device according to the embodiment of the invention of the figure 1 , in the process of reassembling the barrel, and
  • there Figure 3 schematically represents a top view of the winding device according to the embodiment of the invention of the figure 1 , in the disengaged position, particularly when the barrel spring is fully armed.

Description détaillée de l'inventionDetailed description of the invention

Les figures 1 à 3 représentent un mode de réalisation d'un dispositif de remontage 1, ici d'un barillet 2 d'horlogerie, selon l'invention.THE figures 1 to 3 represent an embodiment of a winding device 1, here a watch barrel 2, according to the invention.

Le dispositif de remontage 1 du barillet 2 comprend un rochet 3 et un rouage de remontage 4. Le rouage de remontage 4 engrène avec le rochet 3, de sorte que lorsque le rouage de remontage 4 est mis en rotation dans un premier sens, le rochet 3 est entraîné en rotation dans un deuxième sens inverse du premier sens.The winding device 1 of the barrel 2 comprises a ratchet 3 and a winding gear 4. The winding gear 4 meshes with the ratchet 3, so that when the winding gear 4 is rotated in a first direction, the ratchet 3 is rotated in a second direction opposite to the first direction.

Le rochet 3 est monté solidaire sur un arbre de remontage, l'arbre de remontage permettant le remontage du barillet 2. L'arbre de remontage est de préférence cylindrique.The ratchet 3 is mounted integrally on a winding shaft, the winding shaft allowing the winding of the barrel 2. The winding shaft is preferably cylindrical.

Dans l'exemple, l'arbre de remontage est l'arbre de remontage du barillet 2, le rochet 3 étant agencé sur le barillet 2. Le rochet 3 comprend un moyeu 7 monté solidaire sur l'arbre de remontage.In the example, the winding shaft is the winding shaft of the barrel 2, the ratchet 3 being arranged on the barrel 2. The ratchet 3 comprises a hub 7 mounted integrally on the winding shaft.

Dans une variante, non représentée sur les figures, l'arbre de remontage n'est pas monté sur le barillet, l'arbre de remontage comprenant un pignon engrenant avec un mobile entrainant l'arbre de remontage du barillet pour armer le ressort, si le rochet n'est pas monté sur le barillet.In a variant, not shown in the figures, the winding shaft is not mounted on the barrel, the winding shaft comprising a pinion meshing with a mobile driving the winding shaft of the barrel to arm the spring, if the ratchet is not mounted on the barrel.

Le rouage de remontage 4 est agencé à côté du rochet 3, et s'étend de préférence dans le même plan que le rochet 3.The winding gear 4 is arranged next to the ratchet 3, and preferably extends in the same plane as the ratchet 3.

Le rochet 3 comprend une première denture 11 externe répartie autour du rochet 3. La première denture 11 coopère avec une deuxième denture 12 agencée sur le rouage de remontage 4. Le rouage de remontage 4 comprend un pignon muni de la deuxième denture 12 agencée à sa périphérie.The ratchet 3 comprises a first external toothing 11 distributed around the ratchet 3. The first toothing 11 cooperates with a second toothing 12 arranged on the winding gear 4. The winding gear 4 comprises a pinion provided with the second toothing 12 arranged on its periphery.

Le barillet 2 comporte un ressort spiral (non représenté sur les figures), agencé à l'intérieur du barillet 2, qui doit être armé, soit par un système de remontage automatique, soit par un système de remontage manuel.The barrel 2 includes a spiral spring (not shown in the figures), arranged inside the barrel 2, which must be armed, either by an automatic winding system, or by a manual winding system.

A cette fin, le dispositif de remontage 1 comprend en outre un système de rouages 13, par exemple entraîné par une masse de remontage automatique (non représentée sur les figures) du mouvement d'horlogerie. Le système de rouages 13 peut aussi être entraîné par une tige de remontoir (non représentée sur les figures) actionnable au moyen d'une couronne, dans la cas d'un remontage manuel.To this end, the winding device 1 further comprises a system of cogs 13, for example driven by an automatic winding mass (not shown in the figures) of the watch movement. The cog system 13 can also be driven by a winding stem (not shown in the figures) operable by means of a crown, in the case of manual winding.

Un mobile d'actionnement 21 du remontage du système de rouages 13 comprend une troisième denture 14 engrenant avec la deuxième denture 12 du rouage de remontage 4. Ainsi, en actionnant le système de rouages 13, on applique un couple sur le rochet 3, qui le transmet au moins en partie à l'arbre de remontage par l'intermédiaire du rouage de remontage 4 entraîné par le mobile d'actionnement 21, et par l'intermédiaire du rochet 3 entraîné par le rouage de remontage 4.An actuating mobile 21 for winding the cog system 13 comprises a third toothing 14 meshing with the second toothing 12 of the winding cog 4. Thus, by actuating the cog system 13, a torque is applied to the ratchet 3, which transmits it at least in part to the winding shaft via the winding gear 4 driven by the actuation mobile 21, and via the ratchet 3 driven by the winding gear 4.

La rotation du rouage de remontage 4 engendre la rotation du rochet 3, et donc de l'arbre de remontage, lors du remontage du barillet 2.The rotation of the winding gear 4 generates the rotation of the ratchet 3, and therefore of the winding shaft, during the winding of the barrel 2.

Pour éviter de trop armer le barillet, le rouage de remontage 4 est mobile entre une position embrayée dans laquelle il entraîne le rochet 3 et une position débrayée dans laquelle il n'engrène pas avec le rochet 3.To avoid overcocking the barrel, the winding gear 4 is movable between an engaged position in which it drives the ratchet 3 and a disengaged position in which it does not engage with the ratchet 3.

En particulier, le rouage de remontage 4 engrène avec le mobile d'actionnement 21 du remontage, lorsqu'il est en position embrayée, et il n'engrène pas avec le mobile d'actionnement 21 du remontage, lorsqu'il est en position débrayée.In particular, the winding gear 4 meshes with the winding actuation mobile 21, when it is in the engaged position, and it does not mesh with the winding actuation mobile 21, when it is in the disengaged position. .

Ainsi, en position embrayée, le mobile d'actionnement 21 entraîne le rouage de remontage 4, et le rouage de remontage 4 entraîne le rochet 3. Tandis qu'en position débrayée, le mobile d'actionnement 21 tourne à vide et n'entraîne pas le rouage de remontage 4, qui est à distance du mobile d'actionnement 21, de sorte que le rochet 3 n'est plus entraîné par le rouage de remontage 4.Thus, in the engaged position, the actuating mobile 21 drives the winding gear 4, and the winding gear 4 drives the ratchet 3. While in the disengaged position, the actuating mobile 21 turns empty and does not drive not the winding gear 4, which is at a distance from the actuation mobile 21, so that the ratchet 3 is no longer driven by the winding gear 4.

Selon l'invention, le rouage de remontage 4 est monté sur un ressort 5 exerçant une force sur le rouage de remontage 4 pour le maintenir dans la position embrayée.According to the invention, the winding gear 4 is mounted on a spring 5 exerting a force on the winding gear 4 to keep it in the engaged position.

Dans ce mode de réalisation, le ressort 5 comprend un guidage flexible formant un pivot virtuel, le rouage de remontage 4 étant suspendu au guidage flexible. Le guidage flexible est muni de deux lames flexibles décroisées 15 et un élément mobile rigide 16 supportant le rouage de remontage 4. Les deux lames flexibles 15 relient l'élément mobile rigide 16 à un support immobile 17 du dispositif de remontage 1.In this embodiment, the spring 5 comprises a flexible guide forming a virtual pivot, the winding gear 4 being suspended from the flexible guide. The flexible guide is provided with two uncrossed flexible blades 15 and a rigid movable element 16 supporting the winding gear 4. The two flexible blades 15 connect the rigid movable element 16 to a stationary support 17 of the winding device 1.

Le support immobile 17 comprend par exemple un palier du rochet 3. Les lames flexibles 15 se rejoignent et sont reliées au palier d'une part, et s'écartent jusqu'aux extrémités de l'élément mobile rigide 16. L'élément mobile rigide 16 a ici une forme d'arc de cercle.The immobile support 17 comprises for example a bearing of the ratchet 3. The flexible blades 15 meet and are connected to the bearing on the one hand, and spread out to the ends of the rigid movable element 16. The rigid movable element 16 here has the shape of an arc of a circle.

Le guidage flexible exerce une force de rappel radiale sur le rouage de remontage 40 en direction du mobile d'actionnement 21.The flexible guide exerts a radial restoring force on the winding gear 40 in the direction of the actuating mobile 21.

En outre, le rouage de remontage 4 se déplace en position débrayée, lorsque le couple appliqué sur le rochet 3 excède sensiblement une valeur seuil, en particulier lorsque le barillet 2 est complètement armé.In addition, the winding gear 4 moves to the disengaged position, when the torque applied to the ratchet 3 significantly exceeds a threshold value, in particular when the barrel 2 is fully cocked.

Ainsi, lorsque le couple dépasse sensiblement une valeur seuil, le rouage de remontage effectue un mouvement rotatif pour passer de la position embrayée à la position débrayée. Le rouage de remontage 4 effectue un déplacement latéral entre la position embrayée et la position débrayée. En outre, le rouage de remontage 4 effectue un mouvement rotatif autour du pivot virtuel pour passer de la position embrayée à la position débrayée et réciproquement.Thus, when the torque significantly exceeds a threshold value, the winding gear performs a rotary movement to move from the engaged position to the disengaged position. The winding gear 4 carries out a lateral movement between the engaged position and the disengaged position. In addition, the winding gear 4 performs a rotary movement around the virtual pivot to move from the engaged position to the disengaged position and vice versa.

Au-delà de la valeur seuil, lorsque le couple demandé pour faire tourner le rochet 3 est plus élevé que celui demandé pour courber le guidage flexible, le rouage de remontage 4 est repoussé par le mobile d'actionnement 21 dans la position débrayée. Autrement dit, lorsque le rouage de remontage 4 appuie fortement sur le rochet 3, l'élément mobile rigide 16 et le rouage de remontage 4 se déplacent car les lames flexibles 15 du guidage flexible flambent.Beyond the threshold value, when the torque required to rotate the ratchet 3 is higher than that required to bend the flexible guide, the winding gear 4 is pushed back by the actuating mobile 21 into the disengaged position. In other words, when the winding gear 4 presses strongly on the ratchet 3, the rigid movable element 16 and the winding gear 4 move because the flexible blades 15 of the flexible guide buckle.

Par conséquent, le mobile d'actionnement 21 continue de tourner, mais le rouage de remontage 4 et le rochet 3 ne tournent plus.Consequently, the actuating mobile 21 continues to rotate, but the winding gear 4 and the ratchet 3 no longer rotate.

Sur la figure 1, en configuration de remontage, le couple de remontage exercé sur le rochet 3 est inférieur à la valeur seuil, de sorte que le rouage de remontage 4 reste en position embrayée et engrène avec le mobile d'actionnement 21. Ainsi, le rochet 3 et l'arbre de remontage sont entraînés par le rouage de remontage 4. La première denture 11 périphérique du rochet 3 coopère avec la deuxième denture 12 du rouage de remontage 4 lorsque le couple appliqué sur le rochet 3 est sensiblement inférieur à une valeur seuil.On the figure 1 , in winding configuration, the winding torque exerted on the ratchet 3 is less than the threshold value, so that the winding gear 4 remains in the engaged position and meshes with the actuating mobile 21. Thus, the ratchet 3 and the winding shaft are driven by the winding gear 4. The first peripheral toothing 11 of the ratchet 3 cooperates with the second toothing 12 of the winding gear 4 when the torque applied to the ratchet 3 is substantially less than a threshold value.

Sur la figure 2, en cours de remontage du barillet, lorsque le couple augmente et se rapproche de la valeur seuil, le rouage de remontage 4 commence à se déplacer latéralement grâce au guidage flexible, mais il engrène toujours avec la troisième denture 14 du mobile d'actionnement 21. Ainsi, le rochet 3 est encore entraîné par le rouage de remontage 4.On the figure 2 , during winding of the barrel, when the torque increases and approaches the threshold value, the winding gear 4 begins to move laterally thanks to the flexible guide, but it always meshes with the third toothing 14 of the actuating mobile 21. Thus, the ratchet 3 is still driven by the winding gear 4.

Sur la figure 3, lorsque le barillet 2 est complètement armé, le couple de remontage exercé sur le rochet 3 par le rouage de remontage 4 est supérieur à la valeur seuil, de sorte que le rouage de remontage 4 se déplace complètement dans la position débrayée grâce au guidage flexible.On the Figure 3 , when the barrel 2 is fully cocked, the winding torque exerted on the ratchet 3 by the winding gear 4 is greater than the threshold value, so that the winding gear 4 moves completely into the disengaged position thanks to the flexible guide .

Par conséquent, la deuxième denture 12 du rouage de remontage 4 n'a plus de prise avec la troisième denture 14 du mobile d'actionnement 21. Ainsi, le rouage de remontage 4 et le rochet 3 ne tournent pas.Consequently, the second toothing 12 of the winding gear 4 no longer has any engagement with the third toothing 14 of the actuating mobile 21. Thus, the winding gear 4 and the ratchet 3 do not rotate.

Ces moyens de débrayage permettent de protéger le barillet 2 d'un sur-armage, et évite une usure prématurée à l'intérieur du barillet 2.These disengagement means make it possible to protect the barrel 2 from over-cocking, and avoid premature wear inside the barrel 2.

Le barillet 2 comporte en outre une quatrième denture 18 périphérique configurée pour coopérer avec une quatrième denture 19 d'un mobile 20 du mouvement d'horlogerie. Le mobile 20 est par exemple une roue de moyenne. Une fois armé, le barillet 2 fournit l'énergie nécessaire au fonctionnement du mouvement d'horlogerie par l'intermédiaire du mobile 20.The barrel 2 further comprises a fourth peripheral toothing 18 configured to cooperate with a fourth toothing 19 of a mobile 20 of the watch movement. The mobile 20 is for example an average wheel. Once armed, the barrel 2 supplies the energy necessary for the operation of the clock movement via the mobile 20.

L'invention se rapporte également à un mouvement d'horlogerie, non représenté sur les figures, le mouvement comprenant un barillet et un dispositif de remontage du barillet tel que décrit précédemment.The invention also relates to a watch movement, not shown in the figures, the movement comprising a barrel and a device for winding the barrel as described above.

Naturellement, l'invention n'est pas limitée aux modes de réalisation décrits en référence aux figures et des variantes pourraient être envisagées sans sortir du cadre de l'invention.Naturally, the invention is not limited to the embodiments described with reference to the figures and variants could be considered without departing from the scope of the invention.

Claims (9)

Dispositif de remontage (1, 10), notamment d'un barillet (2) doté d'un ressort, comprenant un rochet (3) monté solidaire sur un arbre de remontage rotatif, l'arbre de remontage rotatif étant par exemple un arbre de remontage du barillet (2) dont la rotation arme le barillet (2), et un rouage de remontage (4, 40) engrenant avec le rochet (3), la rotation du rouage de remontage (4, 40) entrainant la rotation du rochet (3) et celui de l'arbre de remontage rotatif par application d'un couple sur le rochet (3), le rouage de remontage (4, 40) étant mobile entre une position embrayée dans laquelle il entraîne le rochet (3) et une position débrayée dans laquelle il n'entraîne pas le rochet (3) caractérisé en ce que le rouage de remontage (4, 40) est monté sur un ressort (5, 50) exerçant une force de rappel sur le rouage de remontage (4, 40) pour le maintenir dans la position embrayée.Winding device (1, 10), in particular a barrel (2) provided with a spring, comprising a ratchet (3) mounted integrally on a rotary winding shaft, the rotary winding shaft being for example a winding shaft winding of the barrel (2) whose rotation arms the barrel (2), and a winding gear (4, 40) meshing with the ratchet (3), the rotation of the winding gear (4, 40) causing the rotation of the ratchet (3) and that of the rotating winding shaft by application of a torque to the ratchet (3), the winding gear (4, 40) being movable between an engaged position in which it drives the ratchet (3) and a disengaged position in which it does not drive the ratchet (3) characterized in that the winding gear (4, 40) is mounted on a spring (5, 50) exerting a restoring force on the winding gear (4 , 40) to keep it in the engaged position. Dispositif de remontage selon la revendication 1, caractérisé en ce que le rouage de remontage (4, 40) se déplace dans la position débrayée, lorsque le couple appliqué sur le rochet (3) excède sensiblement une valeur seuil, en particulier lorsque le barillet (2) est complètement armé.Winding device according to claim 1, characterized in that the winding train (4, 40) moves into the disengaged position, when the torque applied to the ratchet (3) substantially exceeds a threshold value, in particular when the barrel ( 2) is fully armed. Dispositif de remontage selon la revendication 1 ou 2, caractérisé en ce que le rouage de remontage (4, 40) engrène avec un mobile d'actionnement (21, 31) du remontage, lorsqu'il est en position embrayée, et n'engrène pas avec le mobile d'actionnement (21, 31) du remontage, lorsqu'il est en position débrayée.Winding device according to claim 1 or 2, characterized in that the winding gear (4, 40) meshes with an actuating mobile (21, 31) of the winding, when it is in the engaged position, and does not mesh not with the actuating mobile (21, 31) of the winding, when it is in the disengaged position. Dispositif de remontage selon l'une, quelconque, des revendications précédentes, caractérisé en ce que le rouage de remontage (4, 40) est agencé à côté du rochet (3), et s'étend de préférence dans le même plan que le rochet (3) en position embrayée.Winding device according to any one of the preceding claims, characterized in that the winding gear (4, 40) is arranged next to the ratchet (3), and preferably extends in the same plane as the ratchet (3) in engaged position. Dispositif de remontage selon l'une, quelconque, des revendications précédentes, caractérisé en ce que le rouage de remontage (4) effectue un déplacement latéral entre la position embrayée et la position débrayée.Winding device according to any one of the preceding claims, characterized in that the winding gear (4) performs a lateral movement between the engaged position and the disengaged position. Dispositif de remontage selon la revendication 4 ou 5, caractérisé en ce que le rouage de remontage (4) effectue un mouvement rotatif pour passer de la position embrayée à la position débrayée et réciproquement.Winding device according to claim 4 or 5, characterized in that the winding gear (4) performs a rotary movement to move from the engaged position to the disengaged position and vice versa. Dispositif de remontage selon la revendication 3 et l'une, quelconque, des revendications précédentes, caractérisé en ce que le ressort (5) comprend un guidage flexible formant un pivot virtuel, le rouage de remontage (4) étant suspendu par le guidage flexible, le guidage flexible exerçant une force de rappel radiale sur le rouage de remontage (40) en direction du mobile d'actionnement (21).Winding device according to claim 3 and any one of the preceding claims, characterized in that the spring (5) comprises a flexible guide forming a virtual pivot, the winding train (4) being suspended by the flexible guide, the flexible guide exerting a radial return force on the winding gear (40) towards the actuating mobile (21). Dispositif de remontage selon la revendication 7, caractérisé en ce que le guidage flexible est muni de deux lames flexibles décroisées (15) et un élément mobile rigide (16) supportant le rouage de remontage (4), les deux lames flexibles décroisées (15) reliant l'élément mobile rigide (16) à un support immobile (17) du dispositif de remontage (1).Winding device according to claim 7, characterized in that the flexible guide is provided with two uncrossed flexible blades (15) and a rigid movable element (16) supporting the winding gear (4), the two uncrossed flexible blades (15) connecting the rigid movable element (16) to a stationary support (17) of the winding device (1). Mouvement d'horlogerie comprenant un barillet (2) et un dispositif de remontage (1, 10) du barillet (2) selon l'une, quelconque, des revendications précédentes.Clock movement comprising a barrel (2) and a winding device (1, 10) for the barrel (2) according to any one of the preceding claims.
EP22210930.8A 2022-12-01 2022-12-01 Winding device, in particular for a timepiece barrel, provided with a disengageable winding gear Pending EP4379475A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP22210930.8A EP4379475A1 (en) 2022-12-01 2022-12-01 Winding device, in particular for a timepiece barrel, provided with a disengageable winding gear
US18/513,812 US20240184247A1 (en) 2022-12-01 2023-11-20 Winding device, in particular for a horological barrel, provided with a disconnectable winding gear train
CN202311559780.9A CN118131588A (en) 2022-12-01 2023-11-22 Winding device provided with a releasable winding train, in particular for a timepiece barrel
JP2023198867A JP2024080640A (en) 2022-12-01 2023-11-24 Winding device, in particular for horological barrel, provided with disconnectable winding gear train

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22210930.8A EP4379475A1 (en) 2022-12-01 2022-12-01 Winding device, in particular for a timepiece barrel, provided with a disengageable winding gear

Publications (1)

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EP4379475A1 true EP4379475A1 (en) 2024-06-05

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EP22210930.8A Pending EP4379475A1 (en) 2022-12-01 2022-12-01 Winding device, in particular for a timepiece barrel, provided with a disengageable winding gear

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US (1) US20240184247A1 (en)
EP (1) EP4379475A1 (en)
JP (1) JP2024080640A (en)
CN (1) CN118131588A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH264966A (en) * 1947-11-29 1949-11-15 Erismann Schinz S A Device for limiting the tension of the mainspring of a self-winding timepiece.
DE2302885A1 (en) * 1973-01-20 1974-08-01 Bifora Uhren AUTOMATIC WINDING FOR THE SPRING OF A SMALL CLOCK

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH264966A (en) * 1947-11-29 1949-11-15 Erismann Schinz S A Device for limiting the tension of the mainspring of a self-winding timepiece.
DE2302885A1 (en) * 1973-01-20 1974-08-01 Bifora Uhren AUTOMATIC WINDING FOR THE SPRING OF A SMALL CLOCK

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JP2024080640A (en) 2024-06-13
US20240184247A1 (en) 2024-06-06
CN118131588A (en) 2024-06-04

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