EP3179316B1 - Contactless cylinder escapement - Google Patents

Contactless cylinder escapement Download PDF

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Publication number
EP3179316B1
EP3179316B1 EP15199338.3A EP15199338A EP3179316B1 EP 3179316 B1 EP3179316 B1 EP 3179316B1 EP 15199338 A EP15199338 A EP 15199338A EP 3179316 B1 EP3179316 B1 EP 3179316B1
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EP
European Patent Office
Prior art keywords
disc
magnetic
plate
escapement mechanism
gap
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
EP15199338.3A
Other languages
German (de)
French (fr)
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EP3179316A1 (en
Inventor
Marc Stranczl
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
Nivarox SA
Original Assignee
Nivarox Far SA
Nivarox 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, Nivarox SA filed Critical Nivarox Far SA
Priority to EP15199338.3A priority Critical patent/EP3179316B1/en
Priority to TW105131378A priority patent/TWI691819B/en
Priority to US15/286,022 priority patent/US9915922B2/en
Priority to JP2016216229A priority patent/JP6236133B2/en
Priority to KR1020160166769A priority patent/KR101892823B1/en
Priority to CN201611127522.3A priority patent/CN106919035B/en
Publication of EP3179316A1 publication Critical patent/EP3179316A1/en
Application granted granted Critical
Publication of EP3179316B1 publication Critical patent/EP3179316B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
    • 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
    • G04B15/00—Escapements
    • G04B15/02—Escapements permanently in contact with the regulating mechanism
    • G04B15/04—Cylinder escapements
    • 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
    • G04B15/00—Escapements
    • G04B15/12—Adjusting; Restricting the amplitude of the lever or the like
    • 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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
    • G04C3/101—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details
    • G04C3/104—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details of the pawl or the ratched-wheel
    • G04C3/105—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details of the pawl or the ratched-wheel pawl and ratched-wheel being magnetically coupled
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C5/00—Electric or magnetic means for converting oscillatory to rotary motion in time-pieces, i.e. electric or magnetic escapements
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C5/00—Electric or magnetic means for converting oscillatory to rotary motion in time-pieces, i.e. electric or magnetic escapements
    • G04C5/005—Magnetic or electromagnetic means

Definitions

  • the invention relates to a clockwork escapement mechanism, arranged to cooperate with torque supply means, and comprising a regulator mobile cooperating with an escapement wheel, where said escapement mechanism constitutes a magnetic cylinder escapement, and said escape wheel comprises a plurality of actuators, regularly spaced on the periphery of a first disc, pivotally secured to said escape wheel, said actuators each comprising magnetized or ferromagnetic parts conducting a magnetic field.
  • the invention also relates to a timepiece movement comprising such an escapement mechanism.
  • the invention also relates to a watch comprising at least one such movement.
  • the invention relates to the field of horological escapement mechanisms, and more particularly to the field of contactless escapements.
  • the invention relates to a cylinder exhaust mechanism.
  • the invention proposes to improve the magnetic cylinder escapement of the same inventor, by reducing its sensitivity to external magnetic fields, and by allowing a simpler and less expensive realization.
  • the invention relates to a clockwork escapement mechanism according to claim 1.
  • the invention also relates to a timepiece movement comprising such an escapement mechanism.
  • the invention also relates to a watch comprising at least one such movement.
  • the invention relates to the field of horological escapement mechanisms, and more particularly to the field of contactless escapements.
  • the present invention uses the same operating sequences as the international application WO 2015/096973 A2 , which is based on a magnetic repulsion system, but on a different basis from a magnetic attraction system.
  • the figure 1 shows a cylindrical magnet M, above two metal plates A and B.
  • the magnet M is attracted by a magnetic attraction force FA against the metal plate A on which it rests.
  • This magnet M is pushed from right to left, that is to say from plate A to plate B, by an external force, not shown; the arrow F illustrates the path that the magnet M would like to travel.
  • the magnet M slides and will approach the edge A1 of the plate A, as visible on the figure 2 . He will not go further because there is an intermediate space E too wide between the edge A1 of the plate A and a first edge B1 of the plate B: the magnet M sees "a vacuum" and, as it is attracted on the plate A, it does not cross this void of the intermediate space E.
  • Magnet M no longer perceives the “void” and can therefore continue to move from right to left, from plate A to plate B, crossing the reduced residual space ER.
  • the figure 4 shows the magnet M above the plate B, towards which it is attracted by a magnetic force of attraction FB.
  • the invention relates to a timepiece escapement mechanism 1, which is arranged to cooperate with torque supply means, in particular drive motor means 2, such as a barrel or the like.
  • This escape mechanism 1 comprises a mobile regulator 5 cooperating with an escape wheel 3.
  • This escapement mechanism 1 is a magnetic cylinder escapement. And its escape wheel 3 comprises actuators 6 on the periphery of a first disc 30.
  • this first disc 30 is made of a soft ferromagnetic material.
  • first pulse parts 61, and second stop parts 62 are therefore magnetized, or ferromagnetic conductors of a magnetic field, and are each arranged to guide a magnetic field parallel to the pivot axes, and arranged to cooperate in attraction, through the first disc 30, with a second non-magnetic soft ferromagnetic disc 7 integral with the mobile regulator 5.
  • first and second parts 61 and 62 are referred to as the first magnetic part 61 and second magnetic part 62, in the remainder of the present description, whatever their embodiment.
  • this mechanism 1 comprises a ferromagnetic conductive plate 8, under the first disc 30 and without contact with it, comprising a cutout 80 surrounding the periphery 70 of the second disc 7 without contact with a variable air gap E.
  • This plate 8 closes a magnetic circuit comprising such an actuator 6, the first disc 30, the second disc 7, and a structure 34 in which the escape wheel 3 pivots and which carries the plate 8.
  • this escape mechanism 1 comprises at least one escape wheel 3, which is subjected to a pivoting torque, of moment less than or equal to a nominal moment, about a first pivot axis D1, under the action of such torque supply means.
  • This escape mechanism 1 comprises a regulator or resonator member 4 integral with a regulator mobile 5, preferably mounted to pivot about a second real or virtual pivot axis D2.
  • This regulator or resonator member 4 is in particular of the sprung balance or similar type.
  • the exhaust mechanism 1 constitutes a magnetic cylinder exhaust
  • the escape wheel 3 comprises a plurality of such actuators 6, which are regularly spaced on the periphery of a first disc 30, in particular but not limited to soft ferromagnetic, conductive of a magnetic field, integral in pivoting with the escape wheel 3.
  • Each of these actuators 6 comprises parts magnetic, and is arranged to cooperate in attraction, through the first disc 30, with at least one second disc 7 which the mobile regulator 5 comprises, and fixed in pivoting with it.
  • This second disc 7 is soft ferromagnetic, it is not magnetized.
  • each actuator 6 comprises at least: a first magnetic part 61, called a pulse magnet, and a second magnetic part 62, called a stop magnet, which generate or guide magnetic fields substantially in the same direction and in the same direction, substantially parallel to the first pivot axis D1 of the escape wheel 3.
  • these actuators 6 also include mechanical stops 9.
  • the first magnetic part 61, the second magnetic part 62, and the possible mechanical stop 9 follow one another, over a radius substantially equal with respect to the first pivot axis D1.
  • the escape mechanism 1 comprises a ferromagnetic conductive plate 8, arranged under the first disc 30, and without contact with it.
  • this plate 8 comprises a cutout 80 which surrounds, without contact with it, the periphery 70 of the second disc 7, so as to provide an air gap between the plate 8 and the second disc 7.
  • the escape wheel 3 comprises a shaft portion 31, pivoted in bearings 32 and 33 of a structure 34. And the relative arrangement of the first disc 30, of the actuators 6, of the second disc 7, of the plate 8, and of structure 34, is such that the magnetic circuit can be closed in a loop schematized in broken lines under the reference B of the figure 5 .
  • the mobile regulator 5 comprises a truncated ring 50, non-ferromagnetic, which constitutes an additional mechanical stop.
  • the second disc 7 comprises a first peripheral zone 71 defining with the plate 8 a first air gap E1 larger than a second air gap E2 existing between the plate 8 and a second peripheral zone 72 connected to the first zone 71.
  • the actuators 6, and the first air gap E1, and the second air gap E2 are dimensioned so that a first magnetic part 61 can only pass through the second air gap E2, and is blocked by the first air gap E1, according to the principle of the elementary operating brick, explained above.
  • the first zone 71 is a cylindrical sector of first radius R1 around the second pivot axis D2, which is coaxial with the second zone 72 which is a cylindrical sector of the second radius R2.
  • the truncated crown 50 is superimposed on the first zone 71, and its opening corresponds to the second zone 72.
  • the regulator 4 itself has no magnet.
  • the state of the system is as follows: the escape wheel 3, subjected to the torque transmitted by the barrel, tends to turn clockwise, but is here at a standstill. The balance also rotates clockwise, under the effect of the spring's return torque.
  • the first magnetic pulse part 61 of a first actuator 6 is presented, facing the first zone 71 of the second disc 7, at the level of a first air gap E1, because it is forced by the escape wheel 3 to come out.
  • the larger part of the same first actuator 6, constituting the second magnetic stop part 62, has a greater magnetic force and does not come out of the ferromagnetic plate 8.
  • the first magnetic pulse part 61 is at the level of a first largest air gap E1, into which it has entered, and the second magnetic stop part 62 does not pass.
  • the actuator 6 concerned is therefore stopped at the edge of the air gap E.
  • the figure 8 illustrates the start of the hourly pulse: the balance passes through the neutral point, where the spring-loaded return torque is zero, and the first magnetic pulse part 61 will begin to apply an impulse to the balance by magnetic attraction of the second disc 7. Escape wheel 3 is still stationary. The clockwise movement of the balance is illustrated by the arrow DB. It can be seen that the second zone 72 of the second disc 71 approaches the first magnetic pulse part 61.
  • the figure 9 shows the end of the time pulse: the first magnetic pulse part 61 attracts the balance and closes the air gap by cooperating with the second zone 72 and the second air gap E2, and therefore opens the way to the second magnetic part of stop 62, which can cross this second gap E2. Escape wheel 3 is still stationary, but will therefore start to turn clockwise.
  • the pulse FI by magnetic attraction is comparable to a constant force.
  • the arrows DB and FR indicate the path already traveled by the balance and the escape wheel respectively.
  • the figure 10 illustrates the beginning of the alternation of the balance and the rotation of the escape wheel: the balance rotates under the effect of the impulse, and the escape wheel 3 advances.
  • the first actuator 6, which has crossed the air gap E, is now superimposed on the second disc 70, while a second actuator 6, which was previously superimposed on the second disc 6, is now approaching at the level of the air gap E, but between the second disc 7 and a downstream part 8B of the ferromagnetic plate 8.
  • the figure 11 shows the rotation of the balance under the effect of the impulse, and the escape wheel 3 which is stopped by the second magnetic stop part 62 of the second actuator 6 inside the crown 50, the first magnetic part pulse 61 of this second actuator 8 covering the first air gap E1 on the side of the downstream part 8B.
  • each actuator 6 plays a role equivalent to that of a tooth of the escape wheel in a conventional mechanical escapement.
  • the figure 12 corresponds to the maximum amplitude of the balance, the escape wheel 3 is still stationary.
  • the figure 13 shows the counterclockwise rotation of the balance with the escape wheel still stationary.
  • the figure 14 shows the continuation of the anti-clockwise rotation of the balance, which tends to bring the second zone 72 of the second disc 7 closer to the second actuator 6 still awaiting passage to the downstream part 8B.
  • the figure 15 shows the situation at the instant before the start of the impulse, where the second zone 72 of the second disc 7 arrives at the level of the first magnetic impulse part 61 of the second actuator 6.
  • the escape wheel is still at the level. 'stop.
  • the figure 16 shows the end of the pulse imparted by the first magnetic pulse part 61 of the second actuator 6.
  • the escape wheel 3 begins to rotate.
  • the figure 17 shows escape wheel 3 which is stationary after turning.
  • the second actuator 6 has passed through the passage between the second disc 7 and the downstream part 8B, above which it is now located, and a third actuator 6 is present at the interface between the upstream part 8A and the second disc 7 , and is stopped, only its first magnetic pulse part 61 being above the air gap E1, while its second magnetic stop part 62 cannot pass.
  • the figure 18 shows the continuation of the anti-clockwise rotation of the balance, the escape wheel being stationary.
  • the figure 19 shows the clockwise rotation of the balance after reversing the direction, the escape wheel is still at a standstill, blocked by the third actuator 6.
  • the figure 20 shows the continuation of the clockwise rotation of the balance, the second zone 72 approaches the third actuator 6, and the escape wheel 3 is stationary.
  • the figure 21 shows the start of the hourly pulse, given by the first magnetic pulse part 61 of the third actuator 6.
  • the escape wheel is still stationary.
  • the figure 22 shows the role of the mechanical stops 9 and complementary mechanical stop 50, absorbing the torque imparted to the escape wheel.
  • the invention also relates to a timepiece movement 100 comprising such an escapement mechanism.
  • the invention also relates to a watch 200 comprising at least one such movement 100.
  • the magnetic cylinder escapement by attraction presents an advance over the magnetic cylinder escapement by repulsion, because it is less sensitive to external magnetic fields, and it is simpler to produce.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
  • Micromachines (AREA)
  • Electromechanical Clocks (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Description

Domaine de l'inventionField of the invention

L'invention concerne un mécanisme d'échappement d'horlogerie, agencé pour coopérer avec des moyens de fourniture de couple, et comportant un mobile régulateur coopérant avec une roue d'échappement, où ledit mécanisme d'échappement constitue un échappement à cylindre magnétique, et ladite roue d'échappement comporte une pluralité d'actionneurs, régulièrement espacés sur la périphérie d'un premier disque, solidaire en pivotement de ladite roue d'échappement, lesdits actionneurs comportant chacun des parties aimantées ou ferromagnétiques conductrices d'un champ magnétique.The invention relates to a clockwork escapement mechanism, arranged to cooperate with torque supply means, and comprising a regulator mobile cooperating with an escapement wheel, where said escapement mechanism constitutes a magnetic cylinder escapement, and said escape wheel comprises a plurality of actuators, regularly spaced on the periphery of a first disc, pivotally secured to said escape wheel, said actuators each comprising magnetized or ferromagnetic parts conducting a magnetic field.

L'invention concerne encore un mouvement d'horlogerie comportant un tel mécanisme d'échappement.The invention also relates to a timepiece movement comprising such an escapement mechanism.

L'invention concerne encore une montre comportant au moins un tel mouvement.The invention also relates to a watch comprising at least one such movement.

L'invention concerne le domaine des mécanismes d'échappement d'horlogerie, et, plus particulièrement, le domaine des échappements sans contact.The invention relates to the field of horological escapement mechanisms, and more particularly to the field of contactless escapements.

Arrière-plan de l'inventionBackground of the invention

L'invention concerne un mécanisme d'échappement à cylindre.The invention relates to a cylinder exhaust mechanism.

Le document WO 2015/096973 A2 , au nom de Nivarox- FAR S.A., décrit un échappement à cylindre magnétique, dans lequel un aimant circulaire est solidaire de l'organe réglant. La réalisation d'un aimant parfaitement circulaire et concentrique au balancier-spiral est toutefois délicate. De plus, cet élément magnétique sur le balancier-spiral est sensible aux champs externes, qui peuvent de ce fait perturber la marche de la montre.The document WO 2015/096973 A2 , in the name of Nivarox-FAR SA, describes a magnetic cylinder escapement, in which a circular magnet is integral with the regulating member. The production of a magnet that is perfectly circular and concentric with the sprung balance is however delicate. In addition, this magnetic element on the sprung balance is sensitive to external fields, which can therefore disrupt the running of the watch.

Résumé de l'inventionSummary of the invention

L'invention se propose de perfectionner l'échappement magnétique à cylindre du même inventeur, en réduisant sa sensibilité aux champs magnétiques externes, et en permettant une réalisation plus simple et moins coûteuse.The invention proposes to improve the magnetic cylinder escapement of the same inventor, by reducing its sensitivity to external magnetic fields, and by allowing a simpler and less expensive realization.

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

L'invention concerne encore un mouvement d'horlogerie comportant un tel mécanisme d'échappement.The invention also relates to a timepiece movement comprising such an escapement mechanism.

L'invention concerne encore une montre comportant au moins un tel mouvement.The invention also relates to a watch comprising at least one such movement.

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 :

  • les figures 1 à 4 représentent, de façon schématisée, et en perspective, les éléments constituant une brique élémentaire de fonctionnement, et illustrent le principe de l'invention;
  • les figures 5 et 6 illustrent, en coupe et en perspective, un mécanisme d'échappement d'horlogerie selon l'invention, bâti sur ce principe, et
  • les figures 7 à 21 représentent les différentes étapes successives de fonctionnement, tandis que la figure 22 concerne le cas de l'application d'un couple trop élevé, par exemple lors d'un choc, et le rôle des butées mécaniques que comporte le mécanisme selon l'invention;
  • la figure 23 est un schéma-blocs représentant une montre comportant un mouvement d'horlogerie qui comporte lui-même un tel mécanisme d'échappement.
Other characteristics and advantages of the invention will become apparent on reading the detailed description which follows, with reference to the appended drawings, where:
  • the figures 1 to 4 represent, schematically and in perspective, the elements constituting an elementary operating brick, and illustrate the principle of the invention;
  • the figures 5 and 6 illustrate, in section and in perspective, a clockwork escapement mechanism according to the invention, built on this principle, and
  • the figures 7 to 21 represent the different successive stages of operation, while the figure 22 relates to the case of the application of too high a torque, for example during an impact, and the role of the mechanical stops that the mechanism according to the invention comprises;
  • the figure 23 is a block diagram showing a watch comprising a timepiece movement which itself comprises such an escapement mechanism.

Description détaillée des modes de réalisation préférésDetailed description of the preferred embodiments

L'invention concerne le domaine des mécanismes d'échappement d'horlogerie, et, plus particulièrement, le domaine des échappements sans contact.The invention relates to the field of horological escapement mechanisms, and more particularly to the field of contactless escapements.

Les échappements à cylindre mécanique présentent l'avantage d'assurer une sécurité en cas de couple trop important, notamment lors d'un choc, mais leur niveau de frottements élevé altère de façon importante le rendement de l'échappement.Mechanical cylinder exhausts have the advantage of ensuring safety in the event of too much torque, in particular during an impact, but their high level of friction significantly affects the efficiency of the exhaust.

La présente invention reprend les mêmes séquences de fonctionnement que la demande internationale WO 2015/096973 A2 , qui est basée sur un système en répulsion magnétique, mais sur une base différente d'un système en attraction magnétique.The present invention uses the same operating sequences as the international application WO 2015/096973 A2 , which is based on a magnetic repulsion system, but on a different basis from a magnetic attraction system.

Le principe, dit « brique élémentaire de fonctionnement », basé sur l'attraction magnétique est illustré aux figures 1 à 4.The principle, known as the “elementary operating brick”, based on magnetic attraction is illustrated in figures 1 to 4 .

La figure 1 montre un aimant cylindrique M, au-dessus de deux plaques métalliques A et B. L'aimant M est attiré par une force d'attraction magnétique FA contre la plaque métallique A sur lequel il repose.The figure 1 shows a cylindrical magnet M, above two metal plates A and B. The magnet M is attracted by a magnetic attraction force FA against the metal plate A on which it rests.

Cet aimant M est poussé de droite à gauche, c'est-à-dire de la plaque A vers la plaque B, par une force extérieure non illustrée ; la flèche F illustre le chemin que l'aimant M aimerait parcourir.This magnet M is pushed from right to left, that is to say from plate A to plate B, by an external force, not shown; the arrow F illustrates the path that the magnet M would like to travel.

Sous l'action de cette force extérieure, l'aimant M glisse et va se rapprocher du bord A1 de la plaque A, tel que visible sur la figure 2. Il ne va pas aller plus loin car il y a un espace intermédiaire E trop large entre le bord A1 de la plaque A et un premier bord B1 de la plaque B: l'aimant M voit « du vide » et, comme il est attiré sur la plaque A, il ne franchit pas ce vide de l'espace intermédiaire E.Under the action of this external force, the magnet M slides and will approach the edge A1 of the plate A, as visible on the figure 2 . He will not go further because there is an intermediate space E too wide between the edge A1 of the plate A and a first edge B1 of the plate B: the magnet M sees "a vacuum" and, as it is attracted on the plate A, it does not cross this void of the intermediate space E.

Si on déplace la plaque B par un mouvement T, tendant à substituer au premier bord B1 de la plaque B un deuxième bord B2, plus proche de la plaque A, tel que visible sur la figure 3, l'espace entre les deux plaques A et B, du point de vue de l'aimant M, se réduit fortement.If we move the plate B by a movement T, tending to substitute for the first edge B1 of the plate B a second edge B2, closer to the plate A, as visible on the figure 3 , the space between the two plates A and B, from the point of view of the magnet M, is greatly reduced.

L'aimant M ne perçoit plus le « vide » et peut donc continuer un déplacement de droite à gauche, de la plaque A vers la plaque B, en franchissant l'espace réduit résiduel ER.Magnet M no longer perceives the “void” and can therefore continue to move from right to left, from plate A to plate B, crossing the reduced residual space ER.

La figure 4 montre l'aimant M au-dessus de la plaque B, vers laquelle il est attiré par une force d'attraction magnétique FB.The figure 4 shows the magnet M above the plate B, towards which it is attracted by a magnetic force of attraction FB.

L'invention concerne un mécanisme d'échappement 1 d'horlogerie, qui est agencé pour coopérer avec des moyens de fourniture de couple, notamment de moyens moteurs d'entraînement 2, tel qu'un barillet ou similaire.The invention relates to a timepiece escapement mechanism 1, which is arranged to cooperate with torque supply means, in particular drive motor means 2, such as a barrel or the like.

Ce mécanisme d'échappement 1 comporte un mobile régulateur 5 coopérant avec une roue d'échappement 3.This escape mechanism 1 comprises a mobile regulator 5 cooperating with an escape wheel 3.

Ce mécanisme d'échappement 1 est un échappement magnétique à cylindre. Et sa roue d'échappement 3 comporte des actionneurs 6 en périphérie d'un premier disque 30. Dans une réalisation particulière de l'invention, ce premier disque 30 est en matériau ferromagnétique douxThis escapement mechanism 1 is a magnetic cylinder escapement. And its escape wheel 3 comprises actuators 6 on the periphery of a first disc 30. In a particular embodiment of the invention, this first disc 30 is made of a soft ferromagnetic material.

Chacun des actionneurs 6 comporte une première partie 61 d'impulsion, et une deuxième partie 62 d'arrêt. Ces actionneurs 6 sont composés de parties magnétiques, qui peuvent être réalisées de deux façons :

  • avec un aimant ;
  • ou comme guides de champs magnétiques issus d'aimants disposés dans une zone qui comporte de l'espace disponible à cet effet, par exemple à proximité de l'axe de rotation de la roue d'échappement, ces champs étant ainsi guidés là où on veut que l'actionneur soit.
Each of the actuators 6 comprises a first pulse portion 61, and a second stop portion 62. These actuators 6 are composed of magnetic parts, which can be produced in two ways:
  • with a magnet;
  • or as magnetic field guides from magnets arranged in an area which has space available for this purpose, for example near the axis of rotation of the escape wheel, these fields thus being guided to where one wants the actuator to be.

Ces premières parties 61 d'impulsion, et deuxièmes parties 62 d'arrêt sont donc aimantées, ou ferromagnétiques conductrices d'un champ magnétique, et sont agencées pour guider chacune un champ magnétique parallèlement aux axes de pivotement, et agencé pour coopérer en attraction, au travers du premier disque 30, avec un deuxième disque 7 ferromagnétique doux non aimanté solidaire du mobile régulateur 5.These first pulse parts 61, and second stop parts 62 are therefore magnetized, or ferromagnetic conductors of a magnetic field, and are each arranged to guide a magnetic field parallel to the pivot axes, and arranged to cooperate in attraction, through the first disc 30, with a second non-magnetic soft ferromagnetic disc 7 integral with the mobile regulator 5.

On dénomme ces première et deuxième parties 61 et 62 comme première partie magnétique 61 et deuxième partie magnétique 62, dans la suite de la présente description, quel que soit leur mode de réalisation.These first and second parts 61 and 62 are referred to as the first magnetic part 61 and second magnetic part 62, in the remainder of the present description, whatever their embodiment.

Selon l'invention, ce mécanisme 1 comporte une plaque 8 conductrice ferromagnétique, sous le premier disque 30 et sans contact avec lui, comportant une découpe 80 entourant sans contact la périphérie 70 du deuxième disque 7 avec un entrefer E variable. Cette plaque 8 fermant un circuit magnétique comportant un tel actionneur 6, le premier disque 30, le deuxième disque 7, et une structure 34 dans laquelle pivote la roue d'échappement 3 et qui porte la plaque 8.According to the invention, this mechanism 1 comprises a ferromagnetic conductive plate 8, under the first disc 30 and without contact with it, comprising a cutout 80 surrounding the periphery 70 of the second disc 7 without contact with a variable air gap E. This plate 8 closes a magnetic circuit comprising such an actuator 6, the first disc 30, the second disc 7, and a structure 34 in which the escape wheel 3 pivots and which carries the plate 8.

Plus particulièrement, ce mécanisme d'échappement 1 comporte au moins une roue d'échappement 3, qui est soumise à un couple de pivotement, de moment inférieur ou égal à un moment nominal, autour d'un premier axe de pivotement D1, sous l'action de tels moyens de fourniture de couple.More particularly, this escape mechanism 1 comprises at least one escape wheel 3, which is subjected to a pivoting torque, of moment less than or equal to a nominal moment, about a first pivot axis D1, under the action of such torque supply means.

Ce mécanisme d'échappement 1 comporte un organe régulateur ou résonateur 4 solidaire d'un mobile régulateur 5, de préférence monté pivotant autour d'un deuxième axe de pivotement réel ou virtuel D2. Cet organe régulateur ou résonateur 4 est notamment de type balancier-spiral ou similaire.This escape mechanism 1 comprises a regulator or resonator member 4 integral with a regulator mobile 5, preferably mounted to pivot about a second real or virtual pivot axis D2. This regulator or resonator member 4 is in particular of the sprung balance or similar type.

Selon l'invention, le mécanisme d'échappement 1 constitue un échappement à cylindre magnétique, et, tel que visible sur les figures 5 et 6, la roue d'échappement 3 comporte une pluralité de tels actionneurs 6, qui sont régulièrement espacés sur la périphérie d'un premier disque 30, notamment mais non limitativement ferromagnétique doux, conducteur de champ magnétique, solidaire en pivotement de la roue d'échappement 3. Chacun de ces actionneurs 6 comporte des parties magnétiques, et est agencé pour coopérer en attraction, au travers du premier disque 30, avec au moins un deuxième disque 7 que comporte le mobile régulateur 5, et solidaire en pivotement avec lui.According to the invention, the exhaust mechanism 1 constitutes a magnetic cylinder exhaust, and, as seen on the figures 5 and 6 , the escape wheel 3 comprises a plurality of such actuators 6, which are regularly spaced on the periphery of a first disc 30, in particular but not limited to soft ferromagnetic, conductive of a magnetic field, integral in pivoting with the escape wheel 3. Each of these actuators 6 comprises parts magnetic, and is arranged to cooperate in attraction, through the first disc 30, with at least one second disc 7 which the mobile regulator 5 comprises, and fixed in pivoting with it.

Ce deuxième disque 7 est ferromagnétique doux, il n'est pas aimanté.This second disc 7 is soft ferromagnetic, it is not magnetized.

De préférence, dans la réalisation non limitative illustrée par les figures, chaque actionneur 6 comporte au moins: une première partie magnétique 61, dite aimant d'impulsion, et une deuxième partie magnétique 62, dite aimant d'arrêt, qui génèrent ou guident des champs magnétiques sensiblement de même direction et de même sens, sensiblement parallèle au premier axe de pivotement D1 de la roue d'échappement 3.Preferably, in the non-limiting embodiment illustrated by the figures, each actuator 6 comprises at least: a first magnetic part 61, called a pulse magnet, and a second magnetic part 62, called a stop magnet, which generate or guide magnetic fields substantially in the same direction and in the same direction, substantially parallel to the first pivot axis D1 of the escape wheel 3.

De façon plus particulière, ces actionneurs 6 comportent encore des butées mécaniques 9. La première partie magnétique 61, la deuxième partie magnétique 62, et la butée mécanique 9 éventuelle se succèdent, sur un rayon sensiblement égal par rapport au premier axe de pivotement D1.More particularly, these actuators 6 also include mechanical stops 9. The first magnetic part 61, the second magnetic part 62, and the possible mechanical stop 9 follow one another, over a radius substantially equal with respect to the first pivot axis D1.

Sensiblement dans le même plan que le deuxième disque 7, le mécanisme d'échappement 1 comporte une plaque 8 conductrice ferromagnétique, disposée sous le premier disque 30, et sans contact avec lui. De préférence, cette plaque 8 comporte une découpe 80 qui entoure, sans contact avec elle, la périphérie 70 du deuxième disque 7, de façon à ménager un entrefer entre la plaque 8 et le deuxième disque 7.Substantially in the same plane as the second disc 7, the escape mechanism 1 comprises a ferromagnetic conductive plate 8, arranged under the first disc 30, and without contact with it. Preferably, this plate 8 comprises a cutout 80 which surrounds, without contact with it, the periphery 70 of the second disc 7, so as to provide an air gap between the plate 8 and the second disc 7.

La roue d'échappement 3 comporte une partie arbrée 31, pivotée dans des paliers 32 et 33 d'une structure 34. Et l'agencement relatif du premier disque 30, des actionneurs 6, du deuxième disque 7, de la plaque 8, et de la structure 34, est tel que le circuit magnétique peut se refermer selon une boucle schématisée en trait interrompu sous le repère B de la figure 5.The escape wheel 3 comprises a shaft portion 31, pivoted in bearings 32 and 33 of a structure 34. And the relative arrangement of the first disc 30, of the actuators 6, of the second disc 7, of the plate 8, and of structure 34, is such that the magnetic circuit can be closed in a loop schematized in broken lines under the reference B of the figure 5 .

Quand les actionneurs 6 comportent des butées mécaniques 9, le mobile régulateur 5 comporte une couronne tronquée 50, non ferromagnétique, qui constitue une butée mécanique complémentaire.When the actuators 6 comprise mechanical stops 9, the mobile regulator 5 comprises a truncated ring 50, non-ferromagnetic, which constitutes an additional mechanical stop.

De façon propre à l'invention, le deuxième disque 7 comporte une première zone 71 périphérique définissant avec la plaque 8 un premier entrefer E1 plus grand qu'un deuxième entrefer E2 existant entre la plaque 8 et une deuxième zone 72 périphérique connexe à la première zone 71. Et les actionneurs 6, et le premier entrefer E1, et le deuxième entrefer E2, sont dimensionnés pour qu'une première partie magnétique 61 ne puisse franchir que le deuxième entrefer E2, et soit bloquée par le premier entrefer E1, selon le principe de la brique élémentaire de fonctionnement, exposé plus haut.In a manner specific to the invention, the second disc 7 comprises a first peripheral zone 71 defining with the plate 8 a first air gap E1 larger than a second air gap E2 existing between the plate 8 and a second peripheral zone 72 connected to the first zone 71. And the actuators 6, and the first air gap E1, and the second air gap E2, are dimensioned so that a first magnetic part 61 can only pass through the second air gap E2, and is blocked by the first air gap E1, according to the principle of the elementary operating brick, explained above.

Plus particulièrement, et tel que visible dans la réalisation non limitative des figures, la première zone 71 est un secteur cylindrique de premier rayon R1 autour du deuxième axe de pivotement D2, qui est coaxial avec la deuxième zone 72 qui est un secteur cylindrique de deuxième rayon R2.More particularly, and as visible in the non-limiting embodiment of the figures, the first zone 71 is a cylindrical sector of first radius R1 around the second pivot axis D2, which is coaxial with the second zone 72 which is a cylindrical sector of the second radius R2.

De préférence, et non limitativement, la couronne tronquée 50 vient en superposition de la première zone 71, et son ouverture correspond à la deuxième zone 72.Preferably, and without limitation, the truncated crown 50 is superimposed on the first zone 71, and its opening corresponds to the second zone 72.

L'organe régulateur 4 est quant à lui dépourvu d'aimant.The regulator 4 itself has no magnet.

La cinématique est illustrée par les figures 7 à 21 simplifiées, qui ne représentent ni le balancier ni le spiral, mais uniquement les composants coopérant directement avec la roue d'échappement 3.The kinematics are illustrated by the figures 7 to 21 simplified, which represent neither the balance nor the hairspring, but only the components cooperating directly with the escape wheel 3.

Sur la figure 7, l'état du système est le suivant: la roue d'échappement 3, soumise au couple transmis par le barillet, tend à tourner dans le sens horaire, mais est ici à l'arrêt. Le balancier tourne également dans le sens horaire, sous l'effet du couple de rappel du spiral.On the figure 7 , the state of the system is as follows: the escape wheel 3, subjected to the torque transmitted by the barrel, tends to turn clockwise, but is here at a standstill. The balance also rotates clockwise, under the effect of the spring's return torque.

La première partie magnétique d'impulsion 61 d'un premier actionneur 6 se présente, face à la première zone 71 du deuxième disque 7, au niveau d'un premier entrefer E1, car elle est forcée par la roue d'échappement 3 à sortir d'une partie amont 8A de la plaque ferromagnétique 8.The first magnetic pulse part 61 of a first actuator 6 is presented, facing the first zone 71 of the second disc 7, at the level of a first air gap E1, because it is forced by the escape wheel 3 to come out. an upstream part 8A of the ferromagnetic plate 8.

La plus grosse partie du même premier actionneur 6, constituant la deuxième partie magnétique d'arrêt 62, a une plus grande force magnétique et ne sort pas de la plaque ferromagnétique 8.The larger part of the same first actuator 6, constituting the second magnetic stop part 62, has a greater magnetic force and does not come out of the ferromagnetic plate 8.

Dans cette position, la première partie magnétique d'impulsion 61 est au niveau d'un premier entrefer E1 le plus large, dans lequel il a pénétré, et la deuxième partie magnétique d'arrêt 62 ne passe pas. L'actionneur 6 concerné est donc stoppé en bordure de l'entrefer E.In this position, the first magnetic pulse part 61 is at the level of a first largest air gap E1, into which it has entered, and the second magnetic stop part 62 does not pass. The actuator 6 concerned is therefore stopped at the edge of the air gap E.

La figure 8 illustre le début de l'impulsion horaire : le balancier passe par le point neutre, où le couple de rappel du spiral est nul, et la première partie magnétique d'impulsion 61 va commencer à appliquer une impulsion au balancier par attraction magnétique du deuxième disque 7. La roue d'échappement 3 est toujours à l'arrêt. Le déplacement horaire du balancier est illustré par la flèche DB. On voit que la deuxième zone 72 du deuxième disque 71 se rapproche de la première partie magnétique d'impulsion 61.The figure 8 illustrates the start of the hourly pulse: the balance passes through the neutral point, where the spring-loaded return torque is zero, and the first magnetic pulse part 61 will begin to apply an impulse to the balance by magnetic attraction of the second disc 7. Escape wheel 3 is still stationary. The clockwise movement of the balance is illustrated by the arrow DB. It can be seen that the second zone 72 of the second disc 71 approaches the first magnetic pulse part 61.

La figure 9 montre la fin de l'impulsion horaire : la première partie magnétique d'impulsion 61 attire le balancier et ferme l'entrefer en coopérant avec la deuxième zone 72 et le deuxième entrefer E2, et donc ouvre le chemin à la deuxième partie magnétique d'arrêt 62, qui peut franchir ce deuxième entrefer E2. La roue d'échappement 3 est encore à l'arrêt, mais va donc commencer à tourner dans le sens horaire.The figure 9 shows the end of the time pulse: the first magnetic pulse part 61 attracts the balance and closes the air gap by cooperating with the second zone 72 and the second air gap E2, and therefore opens the way to the second magnetic part of stop 62, which can cross this second gap E2. Escape wheel 3 is still stationary, but will therefore start to turn clockwise.

L'impulsion FI par attraction magnétique est assimilable à une force constante.The pulse FI by magnetic attraction is comparable to a constant force.

Sur chacune des figures, les flèches DB et FR indiquent le chemin déjà parcouru par le balancier et la roue d'échappement respectivement.In each of the figures, the arrows DB and FR indicate the path already traveled by the balance and the escape wheel respectively.

La figure 10 illustre le début de l'alternance du balancier et la rotation de la roue d'échappement: le balancier tourne sous l'effet de l'impulsion, et la roue d'échappement 3 avance. Le premier actionneur 6, qui a franchi l'entrefer E, est maintenant en superposition du deuxième disque 70, tandis qu'un deuxième actionneur 6, qui était auparavant en superposition du deuxième disque 6, se présente maintenant en approche au niveau de l'entrefer E, mais entre le deuxième disque 7 et une partie aval 8B de la plaque ferromagnétique 8.The figure 10 illustrates the beginning of the alternation of the balance and the rotation of the escape wheel: the balance rotates under the effect of the impulse, and the escape wheel 3 advances. The first actuator 6, which has crossed the air gap E, is now superimposed on the second disc 70, while a second actuator 6, which was previously superimposed on the second disc 6, is now approaching at the level of the air gap E, but between the second disc 7 and a downstream part 8B of the ferromagnetic plate 8.

La figure 11 montre la rotation du balancier sous l'effet de l'impulsion, et la roue d'échappement 3 qui est arrêtée par la deuxième partie magnétique d'arrêt 62 du deuxième actionneur 6 à l'intérieur de la couronne 50, la première partie magnétique d'impulsion 61 de ce deuxième actionneur 8 couvrant le premier entrefer E1 du côté de la partie aval 8B. On comprend que chaque actionneur 6 joue un rôle équivalent à celui d'une dent de la roue d'échappement dans un échappement mécanique classique.The figure 11 shows the rotation of the balance under the effect of the impulse, and the escape wheel 3 which is stopped by the second magnetic stop part 62 of the second actuator 6 inside the crown 50, the first magnetic part pulse 61 of this second actuator 8 covering the first air gap E1 on the side of the downstream part 8B. It will be understood that each actuator 6 plays a role equivalent to that of a tooth of the escape wheel in a conventional mechanical escapement.

La figure 12 correspond à l'amplitude maximale du balancier, la roue d'échappement 3 est toujours à l'arrêt.The figure 12 corresponds to the maximum amplitude of the balance, the escape wheel 3 is still stationary.

La figure 13 montre la rotation antihoraire du balancier, la roue d'échappement étant toujours à l'arrêt.The figure 13 shows the counterclockwise rotation of the balance with the escape wheel still stationary.

La figure 14 montre la poursuite de la rotation antihoraire du balancier, qui tend à rapprocher la deuxième zone 72 du deuxième disque 7, du deuxième actionneur 6 toujours en attente de passage vers la partie aval 8B.The figure 14 shows the continuation of the anti-clockwise rotation of the balance, which tends to bring the second zone 72 of the second disc 7 closer to the second actuator 6 still awaiting passage to the downstream part 8B.

La figure 15 montre la situation à l'instant avant le début de l'impulsion, où la deuxième zone 72 du deuxième disque 7 arrive au niveau de la première partie magnétique d'impulsion 61 du deuxième actionneur 6. La roue d'échappement est toujours à l'arrêt.The figure 15 shows the situation at the instant before the start of the impulse, where the second zone 72 of the second disc 7 arrives at the level of the first magnetic impulse part 61 of the second actuator 6. The escape wheel is still at the level. 'stop.

La figure 16 montre la fin de l'impulsion imprimée par la première partie magnétique d'impulsion 61 du deuxième actionneur 6. La roue d'échappement 3 commence à tourner.The figure 16 shows the end of the pulse imparted by the first magnetic pulse part 61 of the second actuator 6. The escape wheel 3 begins to rotate.

La figure 17 montre la roue d'échappement 3 qui est à l'arrêt, après avoir tourné. Le deuxième actionneur 6 a franchi le passage entre le deuxième disque 7 et la partie aval 8B, au-dessus de laquelle il est maintenant situé, et un troisième actionneur 6 se présente à l'interface entre la partie amont 8A et le deuxième disque 7, et est arrêté, seule sa première partie magnétique d'impulsion 61 étant au-dessus de l'entrefer E1, tandis que sa deuxième partie magnétique d'arrêt 62 ne peut pas passer.The figure 17 shows escape wheel 3 which is stationary after turning. The second actuator 6 has passed through the passage between the second disc 7 and the downstream part 8B, above which it is now located, and a third actuator 6 is present at the interface between the upstream part 8A and the second disc 7 , and is stopped, only its first magnetic pulse part 61 being above the air gap E1, while its second magnetic stop part 62 cannot pass.

La figure 18 montre la poursuite de la rotation anti-horaire du balancier, la roue d'échappement étant à l'arrêt.The figure 18 shows the continuation of the anti-clockwise rotation of the balance, the escape wheel being stationary.

La figure 19 montre la rotation horaire du balancier après l'inversion de sens, la roue d'échappement est toujours à l'arrêt, bloquée par le troisième actionneur 6.The figure 19 shows the clockwise rotation of the balance after reversing the direction, the escape wheel is still at a standstill, blocked by the third actuator 6.

La figure 20 montre la poursuite de la rotation horaire du balancier, la deuxième zone 72 se rapproche du troisième actionneur 6, et la roue d'échappement 3 est à l'arrêt.The figure 20 shows the continuation of the clockwise rotation of the balance, the second zone 72 approaches the third actuator 6, and the escape wheel 3 is stationary.

La figure 21 montre le début de l'impulsion horaire, donnée par la première partie magnétique d'impulsion 61 du troisième actionneur 6. La roue d'échappement est encore à l'arrêt.The figure 21 shows the start of the hourly pulse, given by the first magnetic pulse part 61 of the third actuator 6. The escape wheel is still stationary.

Le cycle se poursuit par retour à la figure 7.The cycle continues by returning to the figure 7 .

On comprend que, sur cette représentation très schématique, les impulsions ne sont pas données exactement pour la même position angulaire du plateau, l'homme du métier sait effectuer un tracé adéquat de l'échappement pour les mettre en concordance.It will be understood that, on this very schematic representation, the pulses are not given exactly for the same angular position of the plate, the person skilled in the art knows how to make an adequate trace of the escapement in order to bring them into agreement.

En cas de couple trop élevé, la figure 22 montre le rôle des butées mécanique 9 et butée mécanique complémentaire 50, absorbant le couple imprimé à la roue d'échappement.If the torque is too high, the figure 22 shows the role of the mechanical stops 9 and complementary mechanical stop 50, absorbing the torque imparted to the escape wheel.

L'invention concerne encore un mouvement d'horlogerie 100 comportant un tel mécanisme d'échappement.The invention also relates to a timepiece movement 100 comprising such an escapement mechanism.

L'invention concerne encore une montre 200 comportant au moins un tel mouvement 100.The invention also relates to a watch 200 comprising at least one such movement 100.

L'échappement magnétique à cylindre par attraction selon l'invention présente un progrès sur l'échappement à cylindre magnétique par répulsion, car il est moins sensible aux champs magnétiques externes, et il est plus simple à réaliser.The magnetic cylinder escapement by attraction according to the invention presents an advance over the magnetic cylinder escapement by repulsion, because it is less sensitive to external magnetic fields, and it is simpler to produce.

Claims (9)

  1. Timepiece escapement mechanism (1), arranged to cooperate with means for providing torque (2), and comprising at least one escape wheel (3), which is subjected to a rotational torque, whose moment is lower than or equal to a nominal moment, about a first pivot axis (D1), under the action of said means for providing torque (2), and comprising a regulating member (4) integral with a regulating wheel set (5) mounted to pivot about a second pivot axis (D2), wherein said escapement mechanism (1) constitutes a magnetic cylinder escapement, and said escape wheel (3) comprises a plurality of actuators (6), regularly spaced around the periphery of a first disc (30), pivoting integrally with said escape wheel (3), said actuators (6) each comprising magnetically charged or ferromagnetic magnetic field conductor parts, characterised in that each of said actuators is arranged to work in attraction, via said first disc (30), with at least a second disc (7) comprised in said regulating wheel set (5) and pivoting integrally therewith, said second disc (7) being soft ferromagnetic and not magnetically charged, each said actuator (6) including at least a first magnetic impulse part (61), and a second magnetic stop part (62), which generate or guide magnetic fields of substantially the same direction and the same sense, substantially parallel to said first pivot axis (D1) of said escape wheel (3), characterised in that said escape mechanism (1) comprises, substantially in the same plane as said second disc (7), a conductive ferromagnetic plate (8), disposed underneath said disc (30) and not in contact therewith, said plate (8) comprising a cutout (80) which surrounds, in a contactless manner, the periphery (70) of said second disc (7), so as to provide a variable air-gap (E) between said plate (8) and said second disc (7), and said plate (8) being arranged to ensure the closing of the magnetic circuit formed by at least one said actuator (6), said first disc (30), said second disc (7), and a structure (34) in which said escape wheel (3) pivots and which carries said plate (8), and characterised in that said second disc (7) comprises a first peripheral area (71) defining with said plate (8) a first air-gap (E1) greater than a second air-gap (E2) that exists between said plate (8) and a second peripheral area (72) adjacent to said first area (71), and in that said actuators (6) and said first air-gap (E1) and said second air-gap (E2) are dimensioned such that a said first magnetic part (61) can only cross said second air-gap (E2) and is blocked by said first air-gap (E1).
  2. Escapement mechanism (1) according to claim 1, characterised in that said first area (71) is a cylindrical sector having a first radius (R1) about said second pivot axis (D2) coaxial with said second area (72) which is a cylindrical sector having a second radius (R2).
  3. Escapement mechanism (1) according to claim 1 or 2, characterised in that, each said actuator (6) comprises, following said first magnetic impulse part (61) and said second magnetic stop part (62), a mechanical stop (9), arranged to cooperate, in the event of an excessively high torque, with a non-ferromagnetic truncated crown (50), comprised in said regulating wheel set (5), and which forms a complementary mechanical stop.
  4. Escapement mechanism (1) according to claim 3, characterised in that said truncated crown (50) is superposed on said first area (71), and in that the opening thereof corresponds to said second area (72).
  5. Escapement mechanism according to claim 3 or 4, characterised in that said first magnetic impulse part (61), said second magnetic stop part (62) and said mechanical stop (9) are arranged one after the other, on a substantially equal radius with respect to the first pivot axis (D1).
  6. Escapement mechanism (1) according to claim 1 to 5, characterised in that said regulating member (4) is devoid of magnets.
  7. Escapement mechanism (1) according to claim 1 to 6, characterised in that said disc (30) is made of soft ferromagnetic material.
  8. Timepiece movement (100) including an escapement mechanism (1) according to claim 1 to 7.
  9. Watch (200) including at least one movement (100) according to claim 8.
EP15199338.3A 2015-12-10 2015-12-10 Contactless cylinder escapement Active EP3179316B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP15199338.3A EP3179316B1 (en) 2015-12-10 2015-12-10 Contactless cylinder escapement
TW105131378A TWI691819B (en) 2015-12-10 2016-09-29 Timepiece escapement mechanism, timepiece movement and watch
US15/286,022 US9915922B2 (en) 2015-12-10 2016-10-05 Contactless cylinder escapement
JP2016216229A JP6236133B2 (en) 2015-12-10 2016-11-04 Non-contact cylinder escapement
KR1020160166769A KR101892823B1 (en) 2015-12-10 2016-12-08 Contactless cylinder escapement
CN201611127522.3A CN106919035B (en) 2015-12-10 2016-12-09 Contactless cylinder escapement

Applications Claiming Priority (1)

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EP15199338.3A EP3179316B1 (en) 2015-12-10 2015-12-10 Contactless cylinder escapement

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EP3179316B1 true EP3179316B1 (en) 2021-09-15

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EP (1) EP3179316B1 (en)
JP (1) JP6236133B2 (en)
KR (1) KR101892823B1 (en)
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EP3182225B1 (en) * 2015-12-18 2018-08-08 Montres Breguet S.A. Timepiece sequencer mecanism with recess wheel having a reduced mechanical friction

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EP2891930B1 (en) 2013-12-23 2018-09-19 The Swatch Group Research and Development Ltd. Device for regulating the angular speed of a mobile in a clock movement comprising a magnetic escapement
EP2911015B1 (en) * 2013-12-23 2017-08-23 The Swatch Group Research and Development Ltd. Natural escapement

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US9915922B2 (en) 2018-03-13
TW201727402A (en) 2017-08-01
EP3179316A1 (en) 2017-06-14
CN106919035A (en) 2017-07-04
KR20170069159A (en) 2017-06-20
JP2017106901A (en) 2017-06-15
US20170168454A1 (en) 2017-06-15
TWI691819B (en) 2020-04-21
KR101892823B1 (en) 2018-10-04
JP6236133B2 (en) 2017-11-22
CN106919035B (en) 2019-06-07

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