EP3547045B1 - Timepiece transmission mechanism having reduced clutching effort - Google Patents

Timepiece transmission mechanism having reduced clutching effort Download PDF

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Publication number
EP3547045B1
EP3547045B1 EP18163966.7A EP18163966A EP3547045B1 EP 3547045 B1 EP3547045 B1 EP 3547045B1 EP 18163966 A EP18163966 A EP 18163966A EP 3547045 B1 EP3547045 B1 EP 3547045B1
Authority
EP
European Patent Office
Prior art keywords
wheel set
transmission mechanism
wheel
differential
frame
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.)
Active
Application number
EP18163966.7A
Other languages
German (de)
French (fr)
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EP3547045A1 (en
Inventor
Alain Zaugg
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 EP18163966.7A priority Critical patent/EP3547045B1/en
Priority to JP2019045588A priority patent/JP6806828B2/en
Priority to US16/360,498 priority patent/US11415942B2/en
Priority to CN201910227997.7A priority patent/CN110361954B/en
Publication of EP3547045A1 publication Critical patent/EP3547045A1/en
Application granted granted Critical
Publication of EP3547045B1 publication Critical patent/EP3547045B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0866—Special arrangements
    • G04F7/0871—Special arrangements with multiple chronograph functions, i.e. to count multiple running times
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • 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
    • G04B13/007—Gearwork with differential work
    • 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
    • G04B13/007—Gearwork with differential work
    • G04B13/008—Differentials
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
    • G04B27/06—Mechanical devices for setting the time indicating means by making use of the winding means with rocking bar
    • G04B27/065—Changing the winding position to the setting position and vice versa is done with an independant part of the winding or setting mechanism
    • 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
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/06—Keys or the like with means preventing overwinding
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0842—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms
    • G04F7/0861—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms actuated by other than push-buttons, e.g. bezel or lever

Definitions

  • the invention relates to a clockwork transmission mechanism, arranged to be integrated into a clockwork movement and comprising at least one differential mechanism comprising at least one mobile satellite mounted loose in pivoting and at least three main mobiles constituting inputs or outputs of said differential mechanism, which three main mobiles consist of a chassis, a first mobile arranged to cooperate with a first gear train, and a second mobile arranged to cooperate with a second gear train, only one of said three main mobiles carrying at at least one said satellite mobile permanently meshing with the two other main mobiles, either directly or through at least one intermediate mobile which permanently meshes with one of said two other main mobiles or which is fixed in rotation to the one of said two other main mobiles, said differential mechanism being capable of kinematically connecting said first mobile and said second moving part in an engagement position, and in disengaging them kinematically in an disengaging position.
  • the invention also relates to a timepiece movement comprising at least one such transmission mechanism.
  • the invention also relates to a timepiece, in particular a watch, comprising at least one such movement, and/or comprising at least one such transmission mechanism.
  • the invention also relates to a timepiece movement comprising at least one such transmission mechanism.
  • the invention relates to the field of mechanical clockwork mechanisms.
  • the clutch function has often been used: In a winding and time-setting mechanism, for example, the sliding pinion performs this engagement and disengagement function when the crown passes from position T1 (winding) to position T2 (time-setting ), and vice versa when the crown returns from position T2 to position T1.
  • the clutch is double, because the winding disengages while the time-setting engages, and vice versa.
  • the Start-Stop (or on/off) function is ensured by a clutch (Start) and disengagement (Stop) mechanism.
  • the chronograph clutch can be radial by meshing/disengagement of the teeth of the two wheels which are brought together/moved away. It can also be axial, or vertical, when two wheels which pivot coaxially are held in contact by a spring, or held apart by a fork system.
  • the document EP3021175A1 on behalf of AUDEMARS PIGUET describes a split-seconds device with an epicyclic train for a timepiece, in particular for a chronograph watch, the device comprising a split-seconds pinion carrying a split-seconds hand and mounted in a freely rotatable manner around an axis of rotation of the timepiece.
  • the device comprises a differential comprising an input mobile capable of being kinematically linked to an energy source of the timepiece, a first output mobile kinematically linked to the input mobile by at least one satellite and meshing with the split-seconds gear, a second output wheel set kinematically linked to the input wheel set by said at least one satellite, and a control lever making it possible to lock either the first output wheel set or the second output wheel set, so that the between the first output mobile and the second output mobile which is released by the control lever is capable of being driven by the input mobile when the latter is kinematically linked to the energy source of the timepiece , thus making it possible to block, respectively to release the split-seconds needle.
  • the invention proposes to provide an alternative solution to the mechanisms mentioned above, and which limits the number of moving components to perform the clutch and disengage functions.
  • the invention relates to a clockwork transmission mechanism according to claim 1.
  • the invention also relates to a timepiece movement comprising at least one such transmission mechanism.
  • the invention also relates to a timepiece, in particular a watch, comprising at least one such movement, and/or comprising at least one such transmission mechanism.
  • the invention relates to a clockwork transmission mechanism 100, arranged to be integrated into a clockwork movement 500, and comprising at least one differential mechanism 10.
  • This differential mechanism 10 comprises at least one satellite mobile 3, which is mounted for pivoting, and at least three main mobiles constituting inputs or outputs of the differential mechanism 10.
  • These three main mobiles are constituted by a frame 60, a first wheel set 1 arranged to cooperate with a first gear train, and a second wheel set 2 arranged to cooperate with a second wheel train. Only one of these three main mobiles carries at least one such satellite mobile 3 permanently meshing with the other two main mobiles, either directly or through at least one intermediate mobile 8 which permanently meshes with the one of the two other main mobiles, or which is integral in rotation with one of the two other main mobiles.
  • This differential mechanism 10 is able to kinematically connect the first mobile 1 and the second mobile 2 in an engagement position, and to disengage them kinematically in a disengaged position.
  • the transmission mechanism 100 further comprises control means 20, which are arranged to block only one of these three main mobiles, to carry out the clutch of the differential mechanism 10, or to completely release the frame 60 and the first mobile 1 and the second mobile 2 to disengage the differential mechanism 10, according to the position printed on the control means 20 by a selector 30 which comprises the transmission mechanism 100 and which is arranged to cooperate with an actuator which comprises a clock movement 500, and/or to be maneuvered by a user, or even to both cooperate with such an actuator and be maneuverable by a user.
  • control means 20 which are arranged to block only one of these three main mobiles, to carry out the clutch of the differential mechanism 10, or to completely release the frame 60 and the first mobile 1 and the second mobile 2 to disengage the differential mechanism 10, according to the position printed on the control means 20 by a selector 30 which comprises the transmission mechanism 100 and which is arranged to cooperate with an actuator which comprises a clock movement 500, and/or to be maneuvered by a user, or even to both cooperate with such an actuator and be maneuverable by a user.
  • This blocking wheel is that of the three main wheels on which the differential mechanism 10 is locked in the clutch position, by elastic return means 40, which are arranged to exert on this blocking wheel a meshing torque or friction, the calibration of which allows safety disengagement when the torque transmitted from one to the other of the other main mobiles, which do not constitute this locking mobile, is greater than the meshing or friction torque.
  • this selector 30 comprises at least one column wheel 31, which is arranged to, according to its angular position, modify the angular position of a rocker 21 that comprises the control means 20.
  • This Rocker 21 includes a first beak 22 which is arranged to immobilize or release, depending on its position, a peripheral toothing that includes the blocking mobile.
  • the blocking mobile comprises an external toothing with wolf teeth, so as to allow a safety clutch in one direction of rotation.
  • the transmission mechanism 100 further includes mechanical locking means 50, which are arranged to be operated by an actuator that includes a clock movement 500 or/and by a user, and which are arranged to block these means. control 20 in an engaged or disengaged position.
  • the frame 60, the first mobile 1, and the second mobile 2 are arranged to pivot around axes parallel to the same differential direction.
  • each satellite mobile 3 is arranged to pivot around an axis parallel to this differential direction.
  • each satellite mobile 3 is arranged to pivot around an axis perpendicular to the differential direction.
  • each mobile satellite 3 is arranged to pivot around an axis which is oblique and not perpendicular with respect to the differential direction.
  • this satellite mobile 3 is a satellite pinion.
  • the satellite mobile is made up of a pinion and a wheel.
  • the locking mobile which is that of said three main mobiles on which the differential mechanism 10 is locked in the clutch position, is the frame 60.
  • this frame 60 is a ring gear 6 comprising an external toothing with wolf teeth.
  • the at least one satellite mobile 3, or even each satellite mobile 3 is carried by the first mobile 1 or the second mobile 2 and permanently meshes with a toothing 4 of a shaft 5 integral at least in rotation with the second mobile 2 or respectively of the first mobile 1, and the at least one satellite 3, or even each satellite mobile 3, permanently meshes with said ring gear 6.
  • this differential mechanism 10 comprises at least one planetary gear, the first wheel set 1 of which constitutes the planet carrier, the second wheel set 2 constitutes the inner sun gear, and the ring gear 6 of which constitutes the outer sun gear and is coaxial with the second wheel set. 2 and to the first mobile 1.
  • Each satellite 3 of this planetary gear train is enclosed between the first mobile 1 and the second mobile 2, or between the first mobile 1 and a frame 7 that comprises the transmission mechanism 100, this frame is not not shown so as not to overload the figure. In a particular case, this frame 7 is integral with the second mobile 2.
  • a simple differential system is not limiting. Indeed, one can use in a similar way a satellite differential and two crowns, a differential with two sun gears, a spherical differential, or other.
  • the use of a ring gear for blocking is not limiting, it may in fact be advantageous, depending on the transmission ratios to be established, to perform the blocking on one or the other input or output of one of these differential gears.
  • the principle of the invention can be generalized to a differential mechanism 10 which comprises several stages, and in particular each stage comprising an epicyclic train.
  • a double clutch mechanism is commonly used in watchmaking.
  • the figures 3 and 4 illustrate such a double clutch, with an additional planetary gear train, a third wheel set 91 of which constitutes the planet carrier, the second wheel set 2 constitutes the inner sun gear, and a ring gear 96 of which constitutes the outer sun gear and is coaxial with the second wheel set 2 and with a third mobile 91, and of which each secondary satellite 93 is enclosed between the third mobile 91 and the frame 7.
  • the control means 20 comprise a rocker 21 which comprises a first beak 22 arranged to immobilize or release, depending on its position, a toothing device that includes the mobile blocking, and which includes a second arm 29 having a second beak 28 at its distal end.
  • At least one planetary gear train and more particularly each planetary gear train, only comprises gear drive mechanisms.
  • At least one planetary gear train and more particularly each planetary gear train, comprises at least one friction drive mechanism.
  • the figure 6 illustrates a transmission mechanism 100 which comprises a simple clutch with a spherical differential mechanism 10, and with locking by frame, which comprises such a frame 60 enclosed between a first wheel set 1 and a second wheel set 2, and which carries a guide hub 61 in crazy rotation of each satellite mobile 3 with an axis perpendicular to a differential direction, to which the pivot axes of the three main mobiles are parallel.
  • Each satellite mobile 3 permanently meshes with the first mobile 1 and with the second mobile 2.
  • the figure 7 illustrates a transmission mechanism 100 comprises a simple clutch with differential mechanism 10 with two solar inputs, and with locking by frame, which comprises such a frame 60 enclosed between a first mobile 1 and a second mobile 2, and which carries a hub 61 of crazy rotation guidance of each satellite mobile 3 with an axis parallel to a differential direction to which the pivot axes of the three main mobiles are parallel.
  • Each satellite mobile 3 permanently meshes with an intermediate mobile 8 which permanently meshes with one of the two other main mobiles, or which is integral in rotation with one of the other two main mobiles.
  • the differential mechanism 10 comprises at least two inputs or outputs consisting of a first mobile 1 arranged to cooperate with a first gear train and a second mobile 2 arranged to cooperate with a second gear train, the differential mechanism 10 being able to kinematically connect the first mobile 1 and the second mobile 2 in a clutch position, and to disconnect them kinematically in a disengaged position.
  • the invention thus comprises a differential gear train, two inputs of which are used to transmit the rotation of the gear train, while the third input is used to engage and disengage the transmission.
  • the differential mechanism 10 comprises at least one mobile satellite 3, which is carried by the first mobile 1, and which permanently meshes with a toothing 4 of a shaft 5 secured at least in rotation to the second mobile 2.
  • This at least one satellite 3 permanently meshes with a ring gear 6 constituting another input or output of the differential mechanism 10
  • the control means 20 are here arranged to block the crown 6, to carry out the clutch of the differential mechanism 10, or to completely release the crown 6, to carry out the disengagement of the differential mechanism 10, according to the position printed on the control means 20 by such a selector 30.
  • control is controlled by a selector 30 which comprises at least one column wheel 31 arranged to, according to its angular position, modify the angular position of the rocker 21 which the control means 20 comprise.
  • alternative control means can be used, such as a shuttle, rocker, or the like.
  • the locking is indirect by elastic return means 40 in the form of a control spring here connected to a frame 7, or to a plate, a bridge or the like, which offers the possibility of a safety clutch if the torque transmitted becomes greater than the passing torque of the teeth of crown 6 on the control.
  • the control means 20 are biased towards the crown 6, to achieve the clutch of the differential mechanism 10, by elastic return means 40 arranged to exert on the crown 6 a meshing or friction torque, the calibration of which allows a safety clutch when the torque transmitted from the first mobile 1 to the second mobile 2, or vice versa, is greater than the meshing or friction torque.
  • the ring gear 6 comprises an external toothing with wolf teeth so as to allow a safety clutch in one direction of rotation.
  • the invention also relates to a timepiece movement 500 comprising at least one such transmission mechanism 100.
  • the invention also relates to a timepiece 1000, in particular a watch, comprising at least one such movement 500 and/or comprising at least one such transmission mechanism 100.
  • the invention constitutes an alternative solution to the known solutions, and has the advantage of limiting the number of moving components to perform the clutching and disengaging function, in particular in comparison with the clamps of the vertical clutches.
  • the invention makes it possible to limit the efforts (forces and/or torques) necessary to ensure engagement and disengagement.
  • the invention can be dimensioned to ensure the transmission of a greater torque, in particular in the case of the construction of a vertical chronograph clutch where the torque is ensured by friction.
  • the invention allows the construction of simple clutches like the chronograph clutch: On/Off, and double clutches like the winding and time-setting mechanisms: function 1 / function 2.
  • the invention also makes it possible to size a torque threshold with safety clutch.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Retarders (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Description

Domaine de l'inventionField of the invention

L'invention concerne un mécanisme de transmission d'horlogerie, agencé pour être intégré dans un mouvement d'horlogerie et comportant au moins un mécanisme différentiel comportant au moins un mobile satellite monté fou en pivotement et au moins trois mobiles principaux constituant des entrées ou sorties dudit mécanisme différentiel, lesquels trois mobiles principaux sont constitués par un châssis, un premier mobile agencé pour coopérer avec un premier rouage, et un deuxième mobile agencé pour coopérer avec un deuxième rouage, l'un seul desdits trois mobiles principaux étant porteur d'au moins un dit mobile satellite engrenant en permanence avec les deux autres mobiles principaux, soit directement, soit au travers d'au moins un mobile intermédiaire qui engrène en permanence avec l'un desdits deux autres mobiles principaux ou qui est solidaire en rotation de l'un desdits deux autres mobiles principaux, ledit mécanisme différentiel étant apte à relier cinématiquement ledit premier mobile et ledit deuxième mobile dans une position d'embrayage, et à les désolidariser cinématiquement dans une position de débrayage.The invention relates to a clockwork transmission mechanism, arranged to be integrated into a clockwork movement and comprising at least one differential mechanism comprising at least one mobile satellite mounted loose in pivoting and at least three main mobiles constituting inputs or outputs of said differential mechanism, which three main mobiles consist of a chassis, a first mobile arranged to cooperate with a first gear train, and a second mobile arranged to cooperate with a second gear train, only one of said three main mobiles carrying at at least one said satellite mobile permanently meshing with the two other main mobiles, either directly or through at least one intermediate mobile which permanently meshes with one of said two other main mobiles or which is fixed in rotation to the one of said two other main mobiles, said differential mechanism being capable of kinematically connecting said first mobile and said second moving part in an engagement position, and in disengaging them kinematically in an disengaging position.

L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel mécanisme de transmission.The invention also relates to a timepiece movement comprising at least one such transmission mechanism.

L'invention concerne encore une pièce d'horlogerie, notamment une montre, comportant au moins un tel mouvement, et/ou comportant au moins un tel mécanisme de transmission.The invention also relates to a timepiece, in particular a watch, comprising at least one such movement, and/or comprising at least one such transmission mechanism.

L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel mécanisme de transmission.The invention also relates to a timepiece movement comprising at least one such transmission mechanism.

L'invention concerne le domaine des mécanismes d'horlogerie mécanique.The invention relates to the field of mechanical clockwork mechanisms.

Arrière-plan de l'inventionBackground of the invention

En horlogerie, la fonction d'embrayage a souvent été utilisée :
Dans un mécanisme de remontage et mise à l'heure par exemple, le pignon coulant permet de réaliser cette fonction d'embrayage et débrayage lors du passage de la couronne de la position T1 (remontage) à la position T2 (mise à l'heure), et inversement lors du retour de la couronne de la position T2 à la position T1. Dans ce cas particulier, l'embrayage est double, car le remontage se débraye alors que la mise à l'heure s'embraye, et inversement.In watchmaking, the clutch function has often been used:
In a winding and time-setting mechanism, for example, the sliding pinion performs this engagement and disengagement function when the crown passes from position T1 (winding) to position T2 (time-setting ), and vice versa when the crown returns from position T2 to position T1. In this particular case, the clutch is double, because the winding disengages while the time-setting engages, and vice versa.

Dans un mécanisme de chronographe, la fonction Start-Stop (ou marche/arrêt) est assurée par un mécanisme d'embrayage (Start) et débrayage (Stop). L'embrayage de chronographe peut être radial par engrènement/ dégrènement des dentures de deux roues qu'on rapproche/éloigne. Il peut aussi être axial, ou vertical, lorsque deux roues qui pivotent coaxialement sont maintenues en contact par un ressort, ou maintenues écartées par un système de fourchette.In a chronograph mechanism, the Start-Stop (or on/off) function is ensured by a clutch (Start) and disengagement (Stop) mechanism. The chronograph clutch can be radial by meshing/disengagement of the teeth of the two wheels which are brought together/moved away. It can also be axial, or vertical, when two wheels which pivot coaxially are held in contact by a spring, or held apart by a fork system.

Ces mécanismes complexes incorporent des composants coûteux, fragiles, et qui ne peuvent transmettre un couple important.These complex mechanisms incorporate expensive and fragile components which cannot transmit a high torque.

Ces mécanismes d'embrayage connus nécessitent, de surcroît, un effort conséquent pour manœuvrer l'embrayage, ce qui amène à surdimensionner inutilement certains composants.These known clutch mechanisms require, in addition, a substantial effort to operate the clutch, which leads to unnecessarily oversizing certain components.

Le document EP3021175A1 au nom de AUDEMARS PIGUET décrit un dispositif de rattrapante à train épicycloïdale pour pièce d'horlogerie, notamment pour montre chronographe, le dispositif comportant un pignon de rattrapante portant une aiguille de rattrapante et monté de façon librement rotative autour d'un axe de rotation de la pièce d'horlogerie. Le dispositif comprend un différentiel comportant un mobile d'entrée apte à être lié cinématiquement à une source d'énergie de la pièce d'horlogerie, un premier mobile de sortie lié cinématiquement au mobile d'entrée par au moins un satellite et engrenant avec le pignon de rattrapante, un deuxième mobile de sortie lié cinématiquement au mobile d'entrée par ledit au moins un satellite, et un levier de commande permettant de bloquer soit le premier mobile de sortie soit le deuxième mobile de sortie, de sorte à ce que celui entre le premier mobile de sortie et le deuxième mobile de sortie qui est libéré par le levier de commande est susceptible d'être entraîné par le mobile d'entrée lorsque ce dernier est lié cinématiquement à la source d'énergie de la pièce d'horlogerie, permettant ainsi de bloquer, respectivement de libérer l'aiguille de rattrapante.The document EP3021175A1 on behalf of AUDEMARS PIGUET describes a split-seconds device with an epicyclic train for a timepiece, in particular for a chronograph watch, the device comprising a split-seconds pinion carrying a split-seconds hand and mounted in a freely rotatable manner around an axis of rotation of the timepiece. The device comprises a differential comprising an input mobile capable of being kinematically linked to an energy source of the timepiece, a first output mobile kinematically linked to the input mobile by at least one satellite and meshing with the split-seconds gear, a second output wheel set kinematically linked to the input wheel set by said at least one satellite, and a control lever making it possible to lock either the first output wheel set or the second output wheel set, so that the between the first output mobile and the second output mobile which is released by the control lever is capable of being driven by the input mobile when the latter is kinematically linked to the energy source of the timepiece , thus making it possible to block, respectively to release the split-seconds needle.

Résumé de l'inventionSummary of the invention

L'invention se propose de fournir une solution alternative aux mécanismes cités plus haut, et qui limite le nombre de composants en mouvement pour réaliser les fonctions d'embrayage et débrayage.The invention proposes to provide an alternative solution to the mechanisms mentioned above, and which limits the number of moving components to perform the clutch and disengage functions.

A cet effet, l'invention concerne un mécanisme de transmission d'horlogerie selon la revendication 1.To this end, the invention relates to a clockwork transmission mechanism according to claim 1.

L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel mécanisme de transmission.The invention also relates to a timepiece movement comprising at least one such transmission mechanism.

L'invention concerne encore une pièce d'horlogerie, notamment une montre, comportant au moins un tel mouvement, et/ou comportant au moins un tel mécanisme de transmission.The invention also relates to a timepiece, in particular a watch, comprising at least one such movement, and/or comprising at least one such transmission mechanism.

Description sommaire des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, en référence aux dessins annexés, où :

  • la figure 1 représente, de façon schématisée, et en plan, un mécanisme d'embrayage simple qui ne fait pas partie de l'invention;
  • la figure 2 représente, de façon schématisée, et en coupe par les principaux points de contact, le mécanisme de la figure 1;
  • la figure 3 représente, de façon schématisée, et en plan, un mécanisme d'embrayage double selon l'invention;
  • la figure 4 représente, de façon schématisée, et en coupe par les principaux points de contact, le mécanisme de la figure 3, laquelle représente en partie supérieure la vue selon AA de la figure 4, et en partie inférieure la vue selon BB de la figure 4;
  • la figure 5 est un schéma-blocs représentant une pièce d'horlogerie, notamment une montre, comportant un mouvement 500 comportant un tel mécanisme de transmission, et comportant encore un autre tel mécanisme de transmission;
  • la figure 6 représente, de façon schématisée, et en coupe par les principaux points de contact, un mécanisme d'embrayage simple à différentiel sphérique et blocage par châssis;
  • la figure 7 représente, de façon schématisée, et en coupe par les principaux points de contact, un mécanisme d'embrayage simple à différentiel à deux entrées solaires et blocage par châssis.
Other characteristics and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, where:
  • the figure 1 represents, schematically, and in plan, a simple clutch mechanism which does not form part of the invention;
  • the figure 2 represents, in a schematic way, and in section by the main points of contact, the mechanism of the figure 1 ;
  • the picture 3 shows, schematically, and in plan, a double clutch mechanism according to the invention;
  • the figure 4 represents, in a schematic way, and in section by the main points of contact, the mechanism of the picture 3 , which represents in the upper part the view according to AA of the figure 4 , and in the lower part the view according to BB of the figure 4 ;
  • the figure 5 is a block diagram representing a timepiece, in particular a watch, comprising a movement 500 comprising such a transmission mechanism, and yet comprising another such transmission mechanism;
  • the figure 6 represents, schematically, and in section through the main points of contact, a simple clutch mechanism with spherical differential and blocking by frame;
  • the figure 7 represents, schematically, and in section by the main points of contact, a simple differential clutch mechanism with two solar inputs and blocking by frame.

Description détaillée des modes de réalisation préférésDetailed Description of Preferred Embodiments

L'invention concerne un mécanisme de transmission 100 d'horlogerie, agencé pour être intégré dans un mouvement d'horlogerie 500, et comportant au moins un mécanisme différentiel 10.The invention relates to a clockwork transmission mechanism 100, arranged to be integrated into a clockwork movement 500, and comprising at least one differential mechanism 10.

Ce mécanisme différentiel 10 comporte au moins un mobile satellite 3, qui est monté fou en pivotement, et au moins trois mobiles principaux constituant des entrées ou sorties du mécanisme différentiel 10. Ces trois mobiles principaux sont constitués par un châssis 60, un premier mobile 1 agencé pour coopérer avec un premier rouage, et un deuxième mobile 2 agencé pour coopérer avec un deuxième rouage. L'un seul de ces trois mobiles principaux est porteur d'au moins un tel mobile satellite 3 engrenant en permanence avec les deux autres mobiles principaux, soit directement, soit au travers d'au moins un mobile intermédiaire 8 qui engrène en permanence avec l'un des deux autres mobiles principaux, ou qui est solidaire en rotation de l'un des deux autres mobiles principaux.This differential mechanism 10 comprises at least one satellite mobile 3, which is mounted for pivoting, and at least three main mobiles constituting inputs or outputs of the differential mechanism 10. These three main mobiles are constituted by a frame 60, a first wheel set 1 arranged to cooperate with a first gear train, and a second wheel set 2 arranged to cooperate with a second wheel train. Only one of these three main mobiles carries at least one such satellite mobile 3 permanently meshing with the other two main mobiles, either directly or through at least one intermediate mobile 8 which permanently meshes with the one of the two other main mobiles, or which is integral in rotation with one of the two other main mobiles.

Ce mécanisme différentiel 10 est apte à relier cinématiquement le premier mobile 1 et le deuxième mobile 2 dans une position d'embrayage, et à les désolidariser cinématiquement dans une position de débrayage.This differential mechanism 10 is able to kinematically connect the first mobile 1 and the second mobile 2 in an engagement position, and to disengage them kinematically in a disengaged position.

Le mécanisme de transmission 100 comporte encore des moyens de commande 20, qui sont agencés pour bloquer un seul de ces trois mobiles principaux, pour réaliser l'embrayage du mécanisme différentiel 10, ou pour libérer entièrement le châssis 60 et le premier mobile 1 et le deuxième mobile 2 pour réaliser le débrayage du mécanisme différentiel 10, selon la position imprimée aux moyens de commande 20 par un sélecteur 30 que comporte le mécanisme de transmission 100 et qui est agencé pour coopérer avec un actionneur que comporte un mouvement d'horlogerie 500, ou/et pour être manoeuvré par un utilisateur, ou bien encore pour à la fois coopérer avec un tel actionneur et être manœuvrable par un utilisateur.The transmission mechanism 100 further comprises control means 20, which are arranged to block only one of these three main mobiles, to carry out the clutch of the differential mechanism 10, or to completely release the frame 60 and the first mobile 1 and the second mobile 2 to disengage the differential mechanism 10, according to the position printed on the control means 20 by a selector 30 which comprises the transmission mechanism 100 and which is arranged to cooperate with an actuator which comprises a clock movement 500, and/or to be maneuvered by a user, or even to both cooperate with such an actuator and be maneuverable by a user.

Ces moyens de commande 20 sont rappelés vers un mobile de blocage. Ce mobile de blocage est celui des trois mobiles principaux sur lequel se fait le blocage du mécanisme différentiel 10 en position d'embrayage, par des moyens de rappel élastique 40, qui sont agencés pour exercer sur ce mobile de blocage un couple d'engrènement ou de friction, dont le tarage autorise un débrayage de sécurité quand le couple transmis de l'un à l'autre des autres mobiles principaux, qui ne constituent pas ce mobile de blocage, est supérieur au couple d'engrènement ou de friction.These control means 20 are returned to a blocking mobile. This blocking wheel is that of the three main wheels on which the differential mechanism 10 is locked in the clutch position, by elastic return means 40, which are arranged to exert on this blocking wheel a meshing torque or friction, the calibration of which allows safety disengagement when the torque transmitted from one to the other of the other main mobiles, which do not constitute this locking mobile, is greater than the meshing or friction torque.

Dans une réalisation non limitative illustrée par les figures, ce sélecteur 30 comporte au moins une roue à colonnes 31, qui est agencée pour, selon sa position angulaire, modifier la position angulaire d'une bascule 21 que comportent les moyens de commande 20. Cette bascule 21 comporte un premier bec 22 qui est agencé pour immobiliser ou libérer, selon sa position, une denture périphérique que comporte le mobile de blocage.In a non-limiting embodiment illustrated by the figures, this selector 30 comprises at least one column wheel 31, which is arranged to, according to its angular position, modify the angular position of a rocker 21 that comprises the control means 20. This Rocker 21 includes a first beak 22 which is arranged to immobilize or release, depending on its position, a peripheral toothing that includes the blocking mobile.

Selon l'invention, le mobile de blocage comporte une denture extérieure à dents de loup, de façon à permettre un débrayage de sécurité dans un sens de rotation.According to the invention, the blocking mobile comprises an external toothing with wolf teeth, so as to allow a safety clutch in one direction of rotation.

De façon particulière, le mécanisme de transmission 100 comporte encore des moyens de verrouillage mécanique 50, qui sont agencés pour être manoeuvrés par un actionneur que comporte un mouvement d'horlogerie 500 ou/et par un utilisateur, et qui sont agencés pour bloquer ces moyens de commande 20 dans une position embrayée ou débrayée.In particular, the transmission mechanism 100 further includes mechanical locking means 50, which are arranged to be operated by an actuator that includes a clock movement 500 or/and by a user, and which are arranged to block these means. control 20 in an engaged or disengaged position.

Dans une réalisation particulière non limitative, le châssis 60, le premier mobile 1, et le deuxième mobile 2 sont agencés pour pivoter autour d'axes parallèles à une même direction de différentiel.In a particular non-limiting embodiment, the frame 60, the first mobile 1, and the second mobile 2 are arranged to pivot around axes parallel to the same differential direction.

Dans une variante, chaque mobile satellite 3 est agencé pour pivoter autour d'un axe parallèle à cette direction de différentiel.In a variant, each satellite mobile 3 is arranged to pivot around an axis parallel to this differential direction.

Dans une autre variante, chaque mobile satellite 3 est agencé pour pivoter autour d'un axe perpendiculaire à la direction de différentiel.In another variant, each satellite mobile 3 is arranged to pivot around an axis perpendicular to the differential direction.

Dans une autre variante encore, chaque mobile satellite 3 est agencé pour pivoter autour d'un axe oblique et non perpendiculaire par rapport à la direction de différentiel.In yet another variant, each mobile satellite 3 is arranged to pivot around an axis which is oblique and not perpendicular with respect to the differential direction.

Dans une réalisation particulière, non limitative, ce mobile satellite 3 est un pignon satellite. Dans le cas particulier de la figure 7, le mobile satellite est composé d'un pignon et d'une roue.In a particular, non-limiting embodiment, this satellite mobile 3 is a satellite pinion. In the particular case of the figure 7 , the satellite mobile is made up of a pinion and a wheel.

Dans un cas particulier, notamment sur les réalisations illustrées par les figures 6 et 7, le mobile de blocage, qui est celui desdits trois mobiles principaux sur lequel se fait le blocage du mécanisme différentiel 10 en position d'embrayage est le châssis 60.In a particular case, in particular on the achievements illustrated by the figures 6 and 7 , the locking mobile, which is that of said three main mobiles on which the differential mechanism 10 is locked in the clutch position, is the frame 60.

Dans un mode particulier de réalisation, et tel que visible sur les figures, ce châssis 60 est une couronne 6 comportant une denture extérieure à dents de loup.In a particular embodiment, and as visible in the figures, this frame 60 is a ring gear 6 comprising an external toothing with wolf teeth.

Plus particulièrement, le au moins un mobile satellite 3, ou encore chaque mobile satellite 3, est porté par le premier mobile 1 ou le deuxième mobile 2 et engrène en permanence avec une denture 4 d'un arbre 5 solidaire au moins en rotation du deuxième mobile 2 ou respectivement du premier mobile 1, et le au moins un satellite 3, ou encore chaque mobile satellite 3,engrène en permanence avec ladite couronne 6.More particularly, the at least one satellite mobile 3, or even each satellite mobile 3, is carried by the first mobile 1 or the second mobile 2 and permanently meshes with a toothing 4 of a shaft 5 integral at least in rotation with the second mobile 2 or respectively of the first mobile 1, and the at least one satellite 3, or even each satellite mobile 3, permanently meshes with said ring gear 6.

Plus particulièrement encore, ce mécanisme différentiel 10 comporte au moins un train épicycloïdal, dont le premier mobile 1 constitue le porte-satellites, le deuxième mobile 2 constitue le planétaire intérieur, et dont la couronne 6 constitue le planétaire extérieur et est coaxiale au deuxième mobile 2 et au premier mobile 1. Chaque satellite 3 de ce train épicycloïdal est enfermé entre le premier mobile 1 et le deuxième mobile 2, ou entre le premier mobile 1 et un bâti 7 que comporte le mécanisme de transmission 100, ce bâti n'est pas représenté afin d ene pas surcharger la figure. Dans un cas particulier, ce bâti 7 est solidaire du deuxième mobile 2.More particularly still, this differential mechanism 10 comprises at least one planetary gear, the first wheel set 1 of which constitutes the planet carrier, the second wheel set 2 constitutes the inner sun gear, and the ring gear 6 of which constitutes the outer sun gear and is coaxial with the second wheel set. 2 and to the first mobile 1. Each satellite 3 of this planetary gear train is enclosed between the first mobile 1 and the second mobile 2, or between the first mobile 1 and a frame 7 that comprises the transmission mechanism 100, this frame is not not shown so as not to overload the figure. In a particular case, this frame 7 is integral with the second mobile 2.

L'utilisation d'un système de différentiel simple n'est pas limitative. En effet, on peut utiliser de façon similaire un différentiel à satellite et deux couronnes, un différentiel à deux pignons solaires, un différentiel sphérique, ou autre. L'utilisation d'une couronne pour le blocage n'est pas limitative, il peut en effet être avantageux, selon les rapports de transmission à établir, de réaliser le blocage sur l'une ou l'autre entrée ou sortie d'un de ces rouages différentiels.The use of a simple differential system is not limiting. Indeed, one can use in a similar way a satellite differential and two crowns, a differential with two sun gears, a spherical differential, or other. The use of a ring gear for blocking is not limiting, it may in fact be advantageous, depending on the transmission ratios to be established, to perform the blocking on one or the other input or output of one of these differential gears.

Le principe de l'invention est généralisable à un mécanisme différentiel 10 qui comporte plusieurs étages, et notamment chaque étage comportant un train épicycloïdal.The principle of the invention can be generalized to a differential mechanism 10 which comprises several stages, and in particular each stage comprising an epicyclic train.

Plus particulièrement un mécanisme d'embrayage double est d'un emploi courant en horlogerie.More particularly, a double clutch mechanism is commonly used in watchmaking.

En couplant deux mécanismes d'embrayage simple selon la figure 1, on peut obtenir la fonction : embrayage sur sortie 1, position neutre et embrayage sur sortie 2. La position neutre n'est d'ailleurs pas obligatoire. Les deux embrayages peuvent être commandés séparément.By coupling two simple clutch mechanisms according to the figure 1 , one can obtain the function: clutch on output 1, neutral position and clutch on output 2. The neutral position is not obligatory besides. Both clutches can be ordered separately.

Les figures 3 et 4 illustrent un tel embrayage double, avec un train épicycloïdal supplémentaire dont un troisième mobile 91 constitue le porte-satellites, le deuxième mobile 2 constitue le planétaire intérieur, et dont une couronne 96 constitue le planétaire extérieur et est coaxiale au deuxième mobile 2 et à un troisième mobile 91, et dont chaque satellite secondaire 93 est enfermé entre le troisième mobile 91 et le bâti 7. Et les moyens de commande 20 comportent une bascule 21 qui comporte un premier bec 22 agencé pour immobiliser ou libérer, selon sa position, une denture périphérique que comporte le mobile de blocage, et qui comporte un deuxième bras 29 comportant un deuxième bec 28 à son extrémité distale.The figures 3 and 4 illustrate such a double clutch, with an additional planetary gear train, a third wheel set 91 of which constitutes the planet carrier, the second wheel set 2 constitutes the inner sun gear, and a ring gear 96 of which constitutes the outer sun gear and is coaxial with the second wheel set 2 and with a third mobile 91, and of which each secondary satellite 93 is enclosed between the third mobile 91 and the frame 7. And the control means 20 comprise a rocker 21 which comprises a first beak 22 arranged to immobilize or release, depending on its position, a toothing device that includes the mobile blocking, and which includes a second arm 29 having a second beak 28 at its distal end.

Dans un mode particulier de réalisation, au moins un train épicycloïdal, et plus particulièrement chaque train épicycloïdal, comporte uniquement des mécanismes d'entraînement par engrenage.In a particular embodiment, at least one planetary gear train, and more particularly each planetary gear train, only comprises gear drive mechanisms.

Dans un autre mode particulier de réalisation, au moins un train épicycloïdal, et plus particulièrement chaque train épicycloïdal, comporte au moins un mécanisme d'entraînement par friction.In another particular embodiment, at least one planetary gear train, and more particularly each planetary gear train, comprises at least one friction drive mechanism.

La figure 6 illustre un mécanisme de transmission 100 qui comporte un embrayage simple à mécanisme différentiel 10 sphérique, et avec blocage par châssis, qui comporte un tel châssis 60 enfermé entre un premier mobile 1 et un deuxième mobile 2, et qui porte un moyeu 61 de guidage en rotation folle de chaque mobile satellite 3 d'axe perpendiculaire à une direction de différentiel, à laquelle sont parallèles les axes de pivotement des trois mobiles principaux. Chaque mobile satellite 3 engrène en permanence avec le premier mobile 1 et avec le deuxième mobile 2.The figure 6 illustrates a transmission mechanism 100 which comprises a simple clutch with a spherical differential mechanism 10, and with locking by frame, which comprises such a frame 60 enclosed between a first wheel set 1 and a second wheel set 2, and which carries a guide hub 61 in crazy rotation of each satellite mobile 3 with an axis perpendicular to a differential direction, to which the pivot axes of the three main mobiles are parallel. Each satellite mobile 3 permanently meshes with the first mobile 1 and with the second mobile 2.

La figure 7 illustre un mécanisme de transmission 100 comporte un embrayage simple à mécanisme différentiel 10 à deux entrées solaires, et avec blocage par châssis, qui comporte un tel châssis 60 enfermé entre un premier mobile 1 et un deuxième mobile 2, et qui porte un moyeu 61 de guidage en rotation folle de chaque mobile satellite 3 d'axe parallèle à une direction de différentiel à laquelle sont parallèles les axes de pivotement des trois mobiles principaux. Chaque mobile satellite 3 engrèneen permanence avec un mobile intermédiaire 8 qui engrène en permanence avec l'un des deux autres mobiles principaux, ou qui est solidaire en rotation de l'un des deux autres mobiles principaux.The figure 7 illustrates a transmission mechanism 100 comprises a simple clutch with differential mechanism 10 with two solar inputs, and with locking by frame, which comprises such a frame 60 enclosed between a first mobile 1 and a second mobile 2, and which carries a hub 61 of crazy rotation guidance of each satellite mobile 3 with an axis parallel to a differential direction to which the pivot axes of the three main mobiles are parallel. Each satellite mobile 3 permanently meshes with an intermediate mobile 8 which permanently meshes with one of the two other main mobiles, or which is integral in rotation with one of the other two main mobiles.

Plus particulièrement le mécanisme différentiel 10 comporte au moins deux entrées ou sorties constituées par un premier mobile 1 agencé pour coopérer avec un premier rouage et un deuxième mobile 2 agencé pour coopérer avec un deuxième rouage, le mécanisme différentiel 10 étant apte à relier cinématiquement le premier mobile 1 et le deuxième mobile 2 dans une position d'embrayage, et à les désolidariser cinématiquement dans une position de débrayage.More particularly the differential mechanism 10 comprises at least two inputs or outputs consisting of a first mobile 1 arranged to cooperate with a first gear train and a second mobile 2 arranged to cooperate with a second gear train, the differential mechanism 10 being able to kinematically connect the first mobile 1 and the second mobile 2 in a clutch position, and to disconnect them kinematically in a disengaged position.

L'invention comporte ainsi un rouage différentiel dont deux entrées servent à la transmission de la rotation du rouage alors que la troisième entrée sert à embrayer et débrayer la transmission.The invention thus comprises a differential gear train, two inputs of which are used to transmit the rotation of the gear train, while the third input is used to engage and disengage the transmission.

Plus particulièrement, et tel que visible sur les figures 3 et 4, le mécanisme différentiel 10 comporte au moins un mobile satellite 3, qui est porté par le premier mobile 1, et qui engrène en permanence avec une denture 4 d'un arbre 5 solidaire au moins en rotation du deuxième mobile 2. Cet au moins un satellite 3 engrène en permanence avec une couronne 6 constituant une autre entrée ou sortie du mécanisme différentiel 10. Les moyens de commande 20 sont ici agencés pour bloquer la couronne 6, pour réaliser l'embrayage du mécanisme différentiel 10, ou pour libérer entièrement la couronne 6, pour réaliser le débrayage du mécanisme différentiel 10, selon la position imprimée aux moyens de commande 20 par un tel sélecteur 30.More particularly, and as visible on the figures 3 and 4 , the differential mechanism 10 comprises at least one mobile satellite 3, which is carried by the first mobile 1, and which permanently meshes with a toothing 4 of a shaft 5 secured at least in rotation to the second mobile 2. This at least one satellite 3 permanently meshes with a ring gear 6 constituting another input or output of the differential mechanism 10 The control means 20 are here arranged to block the crown 6, to carry out the clutch of the differential mechanism 10, or to completely release the crown 6, to carry out the disengagement of the differential mechanism 10, according to the position printed on the control means 20 by such a selector 30.

Lorsque le sélecteur 30 et les moyens de commande 20, qui comportent, non limitativement sur la réalisation particulière illustrée par les figures, une bascule 21 comportant un premier bec 22 à une extrémité, verrouillent par ce premier bec 22 la denture de la couronne 6 extérieure du rouage différentiel, la rotation appliquée à l'entrée 2 est transmise à la sortie 1.When the selector 30 and the control means 20, which comprise, without limitation on the particular embodiment illustrated by the figures, a rocker 21 comprising a first beak 22 at one end, lock by this first beak 22 the toothing of the crown 6 outside of the differential gear train, the rotation applied to input 2 is transmitted to output 1.

Lorsque le sélecteur 30 et les moyens de commande 20 déverrouillent la denture de la couronne 6 extérieure du rouage différentiel, la rotation appliquée à l'entrée 2 est transmise à la couronne 6 du différentiel qui n'est plus verrouillée, peut alors tourner librement, et supprimer la transmission de couple vers la sortie 1.When the selector 30 and the control means 20 unlock the toothing of the outer crown 6 of the differential gear train, the rotation applied to input 2 is transmitted to the crown 6 of the differential which is no longer locked, can then turn freely, and remove the torque transmission to output 1.

Dans cet exemple non limitatif, la commande est pilotée par un sélecteur 30 qui comporte au moins une roue à colonnes 31 agencée pour, selon sa position angulaire, modifier la position angulaire de la bascule 21 que comportent les moyens de commande 20. D'autres moyens de commande alternatifs sont utilisables, tels que navette, bascule, ou autre.In this non-limiting example, the control is controlled by a selector 30 which comprises at least one column wheel 31 arranged to, according to its angular position, modify the angular position of the rocker 21 which the control means 20 comprise. alternative control means can be used, such as a shuttle, rocker, or the like.

Dans la réalisation illustrée par les figures 1 et 3, le verrouillage est indirect par des moyens de rappel élastique 40 sous la forme d'un ressort de commande ici relié à un bâti 7, ou à une platine, un pont ou similaire, ce qui offre la possibilité d'un débrayage de sécurité si le couple transmis devient supérieur au couple de passage des dents de la couronne 6 sur la commande. Ainsi les moyens de commande 20 sont rappelés vers la couronne 6, pour réaliser l'embrayage du mécanisme différentiel 10, par des moyens de rappel élastique 40 agencés pour exercer sur la couronne 6 un couple d'engrènement ou de friction, dont le tarage autorise un débrayage de sécurité quand le couple transmis du premier mobile 1 au deuxième mobile 2, ou réciproquement, est supérieur au couple d'engrènement ou de friction.In the embodiment illustrated by the figure 1 and 3 , the locking is indirect by elastic return means 40 in the form of a control spring here connected to a frame 7, or to a plate, a bridge or the like, which offers the possibility of a safety clutch if the torque transmitted becomes greater than the passing torque of the teeth of crown 6 on the control. Thus the control means 20 are biased towards the crown 6, to achieve the clutch of the differential mechanism 10, by elastic return means 40 arranged to exert on the crown 6 a meshing or friction torque, the calibration of which allows a safety clutch when the torque transmitted from the first mobile 1 to the second mobile 2, or vice versa, is greater than the meshing or friction torque.

Selon l'invention, et tel que visible sur la figure 3, la couronne 6 comporte une denture extérieure à dents de loup de façon à permettre un débrayage de sécurité dans un sens de rotation.According to the invention, and as visible on the picture 3 , the ring gear 6 comprises an external toothing with wolf teeth so as to allow a safety clutch in one direction of rotation.

L'invention concerne encore un mouvement d'horlogerie 500 comportant au moins un tel mécanisme de transmission 100.The invention also relates to a timepiece movement 500 comprising at least one such transmission mechanism 100.

L'invention concerne encore une pièce d'horlogerie 1000, en particulier une montre, comportant au moins un tel mouvement 500 et/ou comportant au moins un tel mécanisme de transmission 100.The invention also relates to a timepiece 1000, in particular a watch, comprising at least one such movement 500 and/or comprising at least one such transmission mechanism 100.

En somme, l'invention constitue une solution alternative aux solutions connues, et présente l'avantage de limiter le nombre de composants en mouvement pour réaliser la fonction d'embrayage et débrayage, en particulier en comparaison avec les pinces des embrayages verticaux.In short, the invention constitutes an alternative solution to the known solutions, and has the advantage of limiting the number of moving components to perform the clutching and disengaging function, in particular in comparison with the clamps of the vertical clutches.

L'invention permet de limiter les efforts (forces et/ou couples) nécessaires pour assurer l'embrayage et le débrayage.The invention makes it possible to limit the efforts (forces and/or torques) necessary to ensure engagement and disengagement.

L'invention peut être dimensionnée pour assurer la transmission d'un couple plus important, notamment dans le cas de la construction d'un embrayage vertical de chronographe où le couple est assuré par une friction.The invention can be dimensioned to ensure the transmission of a greater torque, in particular in the case of the construction of a vertical chronograph clutch where the torque is ensured by friction.

L'invention permet la construction d'embrayages simples comme l'embrayage de chronographe: On/Off, et doubles comme les mécanismes de remontage et mise à l'heure: fonction 1 / fonction 2.The invention allows the construction of simple clutches like the chronograph clutch: On/Off, and double clutches like the winding and time-setting mechanisms: function 1 / function 2.

L'invention permet, encore, de dimensionner un seuil de couple avec débrayage de sécurité.The invention also makes it possible to size a torque threshold with safety clutch.

Claims (20)

  1. Timepiece transmission mechanism (100), arranged to be integrated in a timepiece movement (500) and including at least one differential mechanism (10) including at least one planet wheel set (3) mounted for free rotation and at least three main wheel sets forming the inputs or outputs of said differential mechanism (10), which three main wheel sets are formed by a frame (60), a first wheel set (1) arranged to cooperate with a first train, and a second wheel set (2) arranged to cooperate with a second train, only one of said three main wheel sets carrying at least one said planet wheel set (3) permanently meshing with the other two main wheel sets, either directly or through at least one intermediate wheel set (8) which permanently meshes with one of said other two main wheel sets or which is integral in rotation with one of said other two main wheel sets, said differential mechanism (10) being able to kinematically connect said first wheel set (1) and said second wheel set (2) in a coupling position, and to separate them kinematically in an uncoupling position, said transmission mechanism (10) further comprising control means (20) arranged to lock only one of said three main wheel sets in order to couple said differential mechanism (10), or to completely release said frame (60) and said first wheel set (1) and said second wheel set (2) in order to uncouple said differential mechanism (10), depending on the position given to said control means (20) by a selector (30) comprised in said transmission mechanism (100) and which is arranged to cooperate with an actuator comprised in a said timepiece movement (500), and/or to be operated by a user, and wherein said control means (20) are returned to a locking wheel set which is whichever of said three main wheel sets on which said differential mechanism (10) is locked in the coupling position, by elastic return means (40), arranged to exert on said locking wheel set an engaging or friction torque, which is calibrated to allow a safety uncoupling function when the torque transmitted from one to the other of the other main wheel sets distinct from said locking wheel set is higher than said engaging or friction torque, characterized in that said locking wheel set includes an external toothing with wolf teeth, to allow a safety uncoupling function in one direction of rotation.
  2. Transmission mechanism (10) according to claim 1, characterized in that said selector (30) includes at least one column wheel (31), which is arranged, according to its angular position, to modify the angular position of a lever (21) comprised in said control means (20), which lever (21) includes a first beak (22) arranged to immobilise or release, depending on its position, a peripheral toothing comprised in said locking wheel set.
  3. Transmission mechanism (100) according to claim 1 or 2, characterized in that said transmission mechanism (100) further includes mechanical locking means (50) arranged to be operated by an actuator comprised in a said timepiece movement (500) and/or by a user, and which are arranged to lock said control means (20) in a coupled or uncoupled position.
  4. Transmission mechanism (100) according to any of claims 1 to 3, characterized in that said frame (60), said first wheel set (1) and said second wheel set (2) are arranged to pivot about axes parallel to a same differential direction.
  5. Transmission mechanism (100) according to claim 4, characterized in that each said planet wheel set (3) is arranged to pivot about an axis parallel to said differential direction.
  6. Transmission mechanism (100) according to claim 4, characterized in that each said planet wheel set (3) is arranged to pivot about an axis perpendicular to said differential direction.
  7. Transmission mechanism (100) according to claim 4, characterized in that each each planet wheel set (3 is arranged to pivot about an oblique and non-perpendicular axis with respect to said differential direction.
  8. Transmission mechanism (100) according to any of claims 1 to 7, characterized in that the locking wheel set is whichever of said three main wheel sets on which said differential mechanism (10) is locked in the coupling position, is said frame (60).
  9. Transmission mechanism (100) according to any of claims 1 to 8, characterized in that said frame (60) is a crown-wheel (6).
  10. Transmission mechanism (100) according to claim 9, characterized in that said at least one planet wheel set (3) is carried by said first wheel set (1) or said second wheel set (2) and permanently meshes with a toothing (4) of an arbor (5) integral at least in rotation with said second wheel set (2) or respectively with said first wheel set (1), and said at least one planet wheel set (3) permanently meshes with said crown-wheel (6).
  11. Transmission mechanism (100) according to claim 10, characterized in that said differential mechanism (10) includes at least one epicycloidal train wherein said first wheel set (1) forms the planetary carrier, said second wheel set (2) forms the inner planet wheel, and said crown-wheel (6) forms the external planet wheel and is coaxial to said second wheel set (2) and to said first wheel set (1), and wherein each said planet wheel (3) is confined between said first wheel set (1) and said second wheel set (2) or between said first wheel set (1) and a frame (7) comprised in said transmission mechanism (100).
  12. Transmission mechanism (100) according to claim 11, characterized in that said frame (7) is integral with said second wheel set (2).
  13. Transmission mechanism (100) according to claim 11 or 12, characterized in that said differential mechanism (10) includes a dual coupling system, with an additional epicycloidal train wherein a third wheel set (91) forms the planetary carrier, said second wheel set (2) forms the inner planet wheel, and wherein a crown-wheel (96) forms the external planet wheel and is coaxial to said first wheel set (2) and to a third wheel set (91), and wherein each secondary planet wheel (93) is confined between said third wheel set (91) and said frame (7), and in that said control means (20) include a lever (21) which includes a first beak (22) arranged to immobilise or release, depending on its position, a peripheral toothing comprised in said locking wheel set, and which includes a second arm (29) including a second beak (28) at its distal end.
  14. Transmission mechanism (100) according to any of claims 11 to 13, characterized in that each said epicycloidal train includes only gear drive mechanisms.
  15. Transmission mechanism (100) according to any of claims 11 to 13, characterized in that at least one said epicycloidal train includes at least one friction drive mechanism.
  16. Transmission mechanism (100) according to any of claims 1 to 15, characterized in that said differential mechanism (10) includes several levels each having an epicycloidal train.
  17. Transmission mechanism (100) according to any of claims 1 to 8, characterized in that said transmission mechanism (100) includes a single coupling system with a spherical differential mechanism (10), and with frame locking, which includes a said frame (60) confined between a said first wheel set (1) and a said second wheel set (2), and which carries a hub (61) for guiding the free rotation of each said planet wheel set (3) whose axis is perpendicular to a differential direction to which are parallel the pivot axes of said three main wheel sets, each said planet wheel set (3) permanently meshing with said first wheel set (1) and with said second wheel set (2).
  18. Transmission mechanism (100) according to any of claims 1 to 8, characterized in that said transmission mechanism (100) includes a single coupling system with a differential mechanism (10) having two sun gears, and with frame locking, which includes a said frame (60) confined between a said first wheel set (1) and a said second wheel set (2), and which carries a hub (61) for guiding the free rotation of each said planet wheel set (3) whose axis is parallel to a differential direction to which are parallel the pivot axes of said three main wheel sets, each said planet wheel set (3) permanently meshing with a said intermediate wheel set (8) which permanent meshes with one of said other two main wheel sets, or which is integral in rotation with one of said other two main wheel sets.
  19. Timepiece movement (500) including at least one transmission mechanism (100) according to any of claims 1 to 18.
  20. Timepiece (1000) including at least one movement (500) according to claim 19 and/or including at least one transmission mechanism (100) according to any of claims 1 to 18.
EP18163966.7A 2018-03-26 2018-03-26 Timepiece transmission mechanism having reduced clutching effort Active EP3547045B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18163966.7A EP3547045B1 (en) 2018-03-26 2018-03-26 Timepiece transmission mechanism having reduced clutching effort
JP2019045588A JP6806828B2 (en) 2018-03-26 2019-03-13 Timekeeper transmission mechanism with reduced connection force
US16/360,498 US11415942B2 (en) 2018-03-26 2019-03-21 Timepiece transmission mechanism with reduced coupling force
CN201910227997.7A CN110361954B (en) 2018-03-26 2019-03-25 Timepiece movement with reduced coupling force

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18163966.7A EP3547045B1 (en) 2018-03-26 2018-03-26 Timepiece transmission mechanism having reduced clutching effort

Publications (2)

Publication Number Publication Date
EP3547045A1 EP3547045A1 (en) 2019-10-02
EP3547045B1 true EP3547045B1 (en) 2022-05-04

Family

ID=61800387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18163966.7A Active EP3547045B1 (en) 2018-03-26 2018-03-26 Timepiece transmission mechanism having reduced clutching effort

Country Status (4)

Country Link
US (1) US11415942B2 (en)
EP (1) EP3547045B1 (en)
JP (1) JP6806828B2 (en)
CN (1) CN110361954B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4180880A1 (en) 2021-11-10 2023-05-17 Montres Breguet S.A. Device for displaying a succession of indications of a temporal quantity for a timepiece

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH216001A (en) * 1939-08-22 1941-07-31 Sonceboz Sa Chronograph timepiece.
ATE316663T1 (en) * 2002-10-07 2006-02-15 Vaucher Mft Fleurier Sa CHRONOGRAPH MOVEMENT
EP1708051A1 (en) * 2005-03-31 2006-10-04 Zenith International SA Timepiece comprising an alarm
EP1944662A1 (en) * 2007-01-15 2008-07-16 Vaucher Manufacture Fleurier SA Hour chiming mechanism
EP2015145B1 (en) * 2007-06-11 2013-05-01 Chopard Manufacture SA Vertical clutch device for a timepiece
CH702924B1 (en) * 2010-06-03 2011-10-14 Patek Philippe Sa Geneve Mobile-way clutch, winding mechanism and a timepiece including said mobile.
CH703247B1 (en) * 2010-06-04 2014-12-15 Milus Internat Sa acoustic indicator of reserve of a timepiece.
EP2410388B1 (en) * 2010-07-21 2018-04-18 Blancpain S.A. Time piece with double display
EP2751622B1 (en) * 2011-09-01 2020-09-09 Rolex S.A. Timepiece capable of displaying two time zones
EP2615506B1 (en) * 2012-01-10 2014-06-25 Montres Breguet SA Device for rapid correction of a display system
US10018963B2 (en) * 2014-03-26 2018-07-10 The Swatch Group Management Services Ag Control system for a timepiece
EP3018535B1 (en) * 2014-11-07 2018-09-05 Montres Breguet SA Winding device with one-way drive arrangement
CH710362A1 (en) * 2014-11-13 2016-05-13 Société Anonyme De La Mft D'horlogerie Audemars Piguet & Cie Device to split planetary gear for a timepiece.

Also Published As

Publication number Publication date
US20190294110A1 (en) 2019-09-26
US11415942B2 (en) 2022-08-16
CN110361954A (en) 2019-10-22
JP2019174457A (en) 2019-10-10
CN110361954B (en) 2021-05-04
EP3547045A1 (en) 2019-10-02
JP6806828B2 (en) 2021-01-06

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