EP2889704B1 - Contactless cylinder escapement mechanism - Google Patents

Contactless cylinder escapement mechanism Download PDF

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Publication number
EP2889704B1
EP2889704B1 EP14186261.5A EP14186261A EP2889704B1 EP 2889704 B1 EP2889704 B1 EP 2889704B1 EP 14186261 A EP14186261 A EP 14186261A EP 2889704 B1 EP2889704 B1 EP 2889704B1
Authority
EP
European Patent Office
Prior art keywords
escapement mechanism
track
escape wheel
magnetically
actuator
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
EP14186261.5A
Other languages
German (de)
French (fr)
Other versions
EP2889704A2 (en
EP2889704A3 (en
Inventor
Marc Stranczl
Pascal Winkler
Gianni Di Domenico
Jean-Luc Helfer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nivarox Far SA
Original Assignee
Nivarox Far SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from EP13199427.9A external-priority patent/EP2887157B1/en
Priority claimed from CH02140/13A external-priority patent/CH709019B1/en
Priority claimed from CH01365/14A external-priority patent/CH709056A2/en
Priority to EP14186261.5A priority Critical patent/EP2889704B1/en
Priority to CH01444/14A priority patent/CH709058A2/en
Application filed by Nivarox Far SA filed Critical Nivarox Far SA
Priority to CH01450/14A priority patent/CH709061A2/en
Priority to EP14186297.9A priority patent/EP2911015B1/en
Priority to CN201480070342.9A priority patent/CN105849650B/en
Priority to US15/106,433 priority patent/US9746829B2/en
Priority to JP2016542197A priority patent/JP6236164B2/en
Priority to RU2016130266A priority patent/RU2666451C2/en
Priority to PCT/EP2014/076930 priority patent/WO2015096973A2/en
Priority to PCT/EP2014/077039 priority patent/WO2015096979A2/en
Priority to RU2016130276A priority patent/RU2660530C2/en
Priority to CN201480070616.4A priority patent/CN105849652B/en
Priority to US15/028,599 priority patent/US9927773B2/en
Priority to JP2016533632A priority patent/JP6130603B2/en
Priority to US15/109,066 priority patent/US9715217B2/en
Priority to EP14821180.8A priority patent/EP3087435B1/en
Priority to CN201480076123.1A priority patent/CN106030422B/en
Priority to PCT/EP2014/079036 priority patent/WO2015097172A2/en
Publication of EP2889704A2 publication Critical patent/EP2889704A2/en
Publication of EP2889704A3 publication Critical patent/EP2889704A3/en
Publication of EP2889704B1 publication Critical patent/EP2889704B1/en
Application granted granted Critical
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Anticipated expiration legal-status Critical

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    • 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
    • G04C3/04—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 balance
    • G04C3/047—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 balance using other coupling means, e.g. electrostrictive, magnetostrictive
    • 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
    • G04B15/06—Free escapements
    • G04B15/08—Lever 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
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • 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 clock escapement mechanism, comprising an escapement wheel subjected to a pivoting torque, of moment less than or equal to a nominal moment, around a first pivot axis, and a solidary resonator of a movable regulator pivoted about a second axis of real or virtual pivoting, said escape wheel comprising a plurality of actuators regularly spaced on its periphery, and each arranged to cooperate directly with at least one first track of said mobile regulator .
  • the invention also relates to a clockwork movement comprising at least one such escape mechanism, and comprising driving motor means subjecting said exhaust wheel to a single-direction pivoting torque around a first axis of rotation. pivoting.
  • the invention also relates to a timepiece comprising such a movement.
  • the invention relates to the field of watch exhaust mechanisms, and more particularly to the field of non-contact exhausts.
  • the document GB671360 in the name of SMITH & SONS describes an escape mechanism, in which the components applying a torque to the escape wheel are chosen with respect to the oscillating element and its associated components, so that the fraction of the arc on which is stopped is more longer than that of the arc on which the impulse takes place.
  • the magnetic elements are shaped and arranged that the reaction on the oscillating element, when the escape wheel is locked, produces substantially no torque on the oscillating member likely to interfere with its oscillation. And the release and stopping of the escape wheel occurs in such a way that the effective pulse, for each direction of oscillation, is concentrated at the midpoint of the arc.
  • the document US 3451280 describes a mechanism transforming an oscillating movement of a resonator into a rotational movement. Oscillation of the resonator is transferred to a first magnetic wheel which rotates a second magnetic wheel.
  • the invention proposes to adapt the principle of mechanical cylinder exhausts, which has the advantage of providing safety in case of excessive torque, especially during an impact, but whose high level of friction alters so much. important performance of the exhaust.
  • the invention is based on the principle of the suppression of contact and friction in a cylinder escapement, by the placement of magnets, or electrets, or the like, which, judiciously placed, form a magnetic or electrostatic repulsion , which removes the friction and therefore the main defect of this exhaust.
  • the magnets, or the like, placed on the escape wheel act as a contactless stop. Mechanical stops are added to prevent any runaway of the escape wheel in the event of impact.
  • the invention relates to a clock escapement mechanism, comprising an escapement wheel subjected to a pivoting torque, of moment less than or equal to a nominal moment, around a first pivot axis, and a resonator integral with a regulating mobile mounted pivoting about a second axis of real or virtual pivoting, said escapement wheel comprising a plurality of actuators regularly spaced on its periphery, and each arranged to cooperate directly with at least a first the track of said mobile controller, characterized in that each said actuator comprises first barrier or electrostatic stop means and arranged to cooperate with said first track which is magnetized, respectively electrified, or ferromagnetic, or respectively electrostatic conductor, to exert on said first track a moment torque greater than said nominal moment, and again because actérisé in that each says one-way pivoting around a first pivot axis, characterized in that said driving motor means are arranged to deliver a sufficient torque to allow the complete superposition of each said first surface with said first track.
  • the invention also relates to a timepiece comprising such a movement.
  • the invention relates to the field of watch exhaust mechanisms, and more particularly to the field of non-contact exhausts.
  • the invention proposes to adapt the principle of mechanical cylinder exhausts, which has the advantage of providing safety in case of excessive torque, especially during an impact, but whose high level of friction alters so much. important performance of the exhaust.
  • the invention relates to a watch exhaust 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 escapement mechanism 1 comprises an escape wheel 3, which is subjected to a pivoting torque, of moment less than or equal to a nominal moment, around a first pivot axis D1, under the action of such means. couple supply.
  • This exhaust mechanism 1 comprises a regulator or resonator member 4 integral with a regulating wheel 5, preferably pivotally mounted around a second real or virtual pivot axis D2.
  • the escape wheel 3 having a plurality of actuators 6, which are regularly spaced on its periphery. Each of these actuators 6 is arranged to cooperate directly with at least one first track 7 that comprises the regulating wheel 5.
  • each such actuator 6 comprises first barrier or electrostatic stopping means and arranged to cooperate with such at least one first track 7 which is magnetized, respectively electrified, or electromagnetic, or electrostatically conductive respectively, for exert on this first track 7 a moment torque greater than the nominal moment.
  • each actuator 6 further comprises second stop means arranged to constitute a stroke limiting stop, arranged to constitute an autonomous exhaust mechanism with at least a first abutment complementary surface 10 that comprises the regulating wheel 5.
  • these first stop means comprise a surface 61, 610, 62, 620, which is magnetized, respectively electrified, or ferromagnetic, or respectively electrostatic conductive, barrier, and which is arranged to cooperate with the first track 7 which is magnetized, respectively electrified, or ferromagnetic, or respectively electrostatic conductive, so as to create between the first track 7 and each surface 61, 610, 62, 620, the actuator 6 concerned a moment torque greater than said nominal moment.
  • these first stop means comprise, arranged to cooperate with the first track, on the one hand a first surface 61, 62, to exert a torque with a first moment less than a second moment of a stop torque on the other hand exerts a second surface 610, 620, barrier where reigns a magnetic field, respectively electrostatic, of greater intensity than the magnetic field, respectively electrostatic, present at the first surface 61, 62, and the second 610 surface, 620, being arranged to cooperate with at least a first complementary abutment surface 10 that comprises the regulating mobile 5 to form with it an autonomous exhaust mechanism.
  • the second stop means comprise a mechanical stop 9, which is arranged to cooperate, as a stroke limiting stop, with at least a first abutment complementary surface 10 that comprises the regulating wheel 5, to form with it a autonomous exhaust mechanism.
  • each such actuator 6 comprises successively, in a single direction of entry in cooperation with the first track 7, a said first surface 61, 62, a second surface 610, 620), and a mechanical stop 9.
  • a first magnetized surface is arranged to cooperate with such at least one first track 7 which is magnetized, respectively electrified, or electromagnetic, respectively electrostatically conductive, so to repel or attract each first surface 61 of each actuator 6.
  • each said actuator 6 comprises a mechanical stop 9, which is arranged to cooperate, limit stop stroke, with at least a first complementary abutment surface 10, and / or with a junction surface 12 oblique, that includes the mobile regulator 5, to constitute with this surface, or with these surfaces, an autonomous exhaust mechanism.
  • the exhaust mechanism 1 according to the invention is more particularly an exhaust at rest without contact. Indeed, the role of the mechanical stop is to ensure the operation of the escape mechanism even when applying an over-torque or during an impact: in normal operation, the cooperation of the first surfaces 61 with the track or tracks 7 of the mobile regulator 5 is sufficient to ensure the operation of the exhaust.
  • the escape wheel 3 is subjected to a one-way pivoting torque about a first pivot axis D1, under the action of the torque to which it is subjected, in particular from the driving motor means 2 .
  • the resonator 4 is in reciprocating pivoting movement, and is integral with such a movable regulator 5 pivotally mounted about a second pivot axis D2.
  • all the actuators 6 are identical to each other. They preferably have identical radial positioning.
  • the first track 7 is located on a sector of a body of revolution oriented on the second pivot axis D2 and has an angular amplitude strictly less than 360 °.
  • This first track 7 can be continuous as in the illustrated case, or be consisting of track sections adjacent to each other on at least a portion of the periphery of the regulator 5.
  • the first magnetized track, respectively electrified is formed of a succession of magnetized pads, respectively electrified. In the remainder of the present description, either "first track 7" is used interchangeably.
  • the first track 7 is flat, and all the actuators 6 which are arranged to cooperate with it have their first surfaces 61 located in the same plane.
  • the first abutment complementary surface 10 is carried by a truncated crown 50, which is a sector of a body of revolution centered on the second pivot axis D2.
  • This first abutment complementary surface 10 is of angular amplitude strictly less than 360 °, so as to minimize the energy exchange between the resonator 4 and the escape wheel 3, except in the vicinity of the equilibrium position of the resonator.
  • the first track 7 generates a first magnetic field, respectively electrostatic, which tends to push each first surface 61 of each actuator 6, which first surface 61 is magnetized, respectively electrified, in a polarity opposite to that of the first field magnetic, respectively electrostatic.
  • each actuator 6 comprises a first magnetized surface 61, respectively electrified, arranged to cooperate with the first track 7 which is magnetized, respectively electrified, so as to attract each first surface 61 of each actuator 6.
  • the wheel of Exhaust 3 may also comprise a plurality of magnets that interact with a track of iron or ferromagnetic material, respectively electrostatically conductive, on a plate integral with the resonator 4.
  • this plate is a ring having holes arranged to form baffles.
  • each said actuator 6 comprises a second surface 62 magnetized, respectively electrified, arranged to cooperate with a second track 8 of the mobile regulator 5.
  • the second track 8 is flat, and all the actuators 6 which are arranged to cooperate with her have their second surfaces 61 located in the same plane. More particularly, this second track 8 is parallel to said first track 7, and perpendicular to the second pivot axis D2.
  • this second track 8 is an annular sector oriented on the second pivot axis D2 and of angular amplitude strictly less than 360 °, and it generates a second magnetic field, respectively electrostatic, which tends to pushing each second surface 62, which second surface 62 is magnetized, respectively electrified, in a polarity opposite to that of said second magnetic field, respectively electrostatic.
  • the second magnetized track 8, respectively electrified is formed of a succession of magnetized pads, respectively electrified.
  • the escape wheel 3 comprises at least one upper disc 31 comprising the first surfaces 61, and a lower disc 32 having the second surfaces 62 located at the right of these first surfaces 61 and opposite thereto, and the wheel of Exhaust 3 comprises magnetic field closure means, respectively electrostatic, between the upper disk 31 and the lower disk 32.
  • This arrangement avoids excessive axial force on the escape wheel.
  • the forces exerted on either side of the regulator 5 are equal.
  • each mechanical stopper 9 is further arranged to cooperate, as a stroke limiting stop, with at least a second abutment complementary surface 11 that comprises the regulating wheel 5.
  • This second abutment complementary surface 11 is more particularly carried by a surface of revolution oriented on the second pivot axis D2, and is of angular amplitude strictly less than 360 °.
  • the second abutment complementary surface 11 is connected to the first abutment complementary surface 10 by at least one junction surface 12, which is arranged to constitute a pulse ramp of the resonator 4 when this junction surface 12 is in abutment on an actuator 6, arranged to bring energy to the resonator in the vicinity of its equilibrium position.
  • this joining surface 12 is flat or substantially flat, parallel to the second pivot axis D2, and inclined relative to the radial plane joining it to the second pivot axis D2 and passing therethrough.
  • the mechanical stop 9 comprises, in a similar manner, a pulse ramp arranged to bring energy to the resonator in the vicinity of its equilibrium position.
  • such a pulse ramp brings energy to the resonator in the vicinity of its equilibrium position only if the engine torque printed at the escape wheel 3 is such that the repulsion, or the attraction respectively. , between the first track 7 and each first surface 61, is insufficient to avoid contact between the mechanical stop 9 and the regulating mobile 5.
  • the first magnetized track 7, respectively electrified is formed of a succession of magnetized pads, respectively electrified.
  • each first magnetized surface respectively electrified, has a degressive section in the radial direction away from the first pivot axis D1, so that the area of a superposition surface 71 corresponding to the projection of the first surface 61 on the first track 7 is variable during the relative pivoting of the escape wheel 2 and the regulator 5.
  • the escape wheel 3 gradually supplies energy to the regulator 5, and this mobile regulator 5 instantaneously restores all this accumulated energy, in the form of a pulse printed on the resonator 4. exhaust mechanism 1 thus constituting a constant force escapement mechanism.
  • the escapement mechanism 1 constitutes a cylinder escapement mechanism, where the first abutment complementary surface 10 is the inner surface of a cylindrical tubular sector, and wherein the second abutment complementary surface 11 is the outer surface of this cylindrical tubular sector.
  • the escapement mechanism 1 constitutes a Lepaute type escapement mechanism, where the escape wheel 3 comprises a half-pin at the level of each actuator 6, and where the first complementary stop surface 10 is the inner surface of a first compass leg, and wherein the second abutment complementary surface 11 is the outer surface of a second compass leg.
  • the inner surface of the first compass leg and the outer surface of said second compass leg are separated by a space, the width of which is greater than the radius of the half-pin.
  • the first compass branch and the second compass branch are integral with each other.
  • first compass branch and the second compass branch pivot about a common axis, and are connected to each other by a spring or the like.
  • This ankle escapement is more suited to static timepieces, the elimination of friction through the implementation of magnetic or electrostatic fields provides a precise and silent, which allows its use for clocks or living room clocks.
  • each actuator 6 comprises, between the first surface 61 (or respectively the second surface 62) and the mechanical stop 9, a barrier 610 (respectively 620) magnetized, respectively electrified, where there is a magnetic field, respectively electrostatic, of higher intensity the magnetic field, respectively electrostatic, present at the first surface 61 (or respectively the second surface 62).
  • the exhaust is thus improved and constitutes a constant force system.
  • the combination of several magnetic poles, or respectively electrostatic poles, which succeed one another in the movement of the escape wheel 3 with respect to the mobile regulator 5 makes it possible to recharge a magnetic potential, or electrostatic respectively, repulsion (between these poles and the mobile regulator 5), which is released at the passage of the pendulum plate notch.
  • the escape wheel 3 then has enough torque to superimpose the first surface 61 (or respectively the second surface 62) to the first track 7 (or respectively the second track 8), but not enough to overlay the barrier 610 (respectively 620) which stops the wheel.
  • the transmitted energy therefore corresponds to this magnetic or electrostatic repulsion potential between, on the one hand, the first surface 61 (or respectively the second surface 62) and, on the other hand, the first track 7 (or respectively the second track 8), which is constant potential, which provides a constant force or torque, which more generally refers to constant force.
  • the invention thus makes it possible to escape certain geometrical constraints of the conventional cylinder escapement.
  • Magnetic or electrostatic repulsion can be carried out in different ways.
  • One possibility is to form, as visible in the figures, a two-level escapement wheel that sandwiches the balance plate.
  • the escape wheel may be made of iron or ferromagnetic material, or respectively electrostatic conductor, to form a magnetic path, respectively electrostatic.
  • Architecture with a two level shelf and a single level wheel is also possible.
  • the exhaust mechanism 1 according to the invention is, in particular, without a stopper such as anchor or the like.
  • the invention also relates to a watch movement 100 comprising at least one such escapement mechanism 1, and comprising driving motor means 2 subjecting an escape wheel 3 to a one-way pivoting torque around a first pivot axis D1.
  • the driving motor means 2 are arranged to deliver a sufficient torque to allow the complete superposition of each first surface 61 with the first track 7.
  • the maximum torque delivered by the driving motor means 2 is limited to a level that is insufficient to allow the complete overlay of each barrier 610 with the first runway 7.
  • the invention also relates to a timepiece, in particular a watch, comprising such a movement 100.
  • FIGS 11 to 13 illustrate an exemplary embodiment of an escapement mechanism according to the invention, in a magnetic alternative, and where the escape wheel 3, of pivot axis D1, comprises two disks, upper 31 and lower 32, each equipped actuators 6 which are here magnetized in an axial direction parallel to D1, with first surfaces 61 at the top disc 31, second surfaces 62 at lower disc 32, first barriers 610 at upper disc 31, second barriers 620 at the lower disk 32, and on one and the other disk, the mechanical stops 9.
  • This escape wheel 3 cooperates with a plateau balance 4, the latter is not shown on the figures 12 and 13 which show only the mobile regulator 5 that carries this plate, and which comprises a ring 50, preferably cylindrical, truncated, pivot axis D2, here parallel to D1.
  • This ring 50 is magnetized in an axial direction parallel to D2.
  • the ring 50 has a complementary inner abutment surface 10 and a second abutment outer abutment surface 11, connected on each side of an opening 51 by a junction surface 12, preferably sloping, and delimited on the inside by a spout. inside 13, and on the outside by an outside spout 14.
  • the configuration of the sloped surfaces 12 and the spouts 13 and 14 is not symmetrical, on either side of the opening 51.
  • the two sloped surfaces 12 are planar, and inclined, and each make an angle of the same orientation and substantially the same value, with the radial end of the pivot axis D2.
  • the figure 12 shows the respective magnetizations of the regulator 5 and the actuators 6.
  • the torque of the escape wheel 3 forces a first magnetized portion, in this case the first surface 61 or the second surface 62 respectively, of the actuator 6 arriving at the the vicinity of the ring 50, to be superimposed on or respectively under the magnetic ring 50.
  • the second magnetized part then being in an interference zone, and which is formed by the first barrier 610, respectively the second barrier 620, has too much magnetic repulsion with the ring 50, the effect of which is to stop the escape wheel 3.
  • the mechanical stops 9 prevent a stall of the system in case shock or excessively high torque on the escape wheel 3.
  • the embodiment of the escape wheel 3 in two parts 31, 32 allows to close the magnetic path, and to avoid too great axial force on the plate.
  • the figure 14 represents the same assembly, the upper disk 31 not being shown, so as to illustrate the position of the actuators 6, in particular in the zone of interference with the ring 50.
  • FIGS. 15 to 35 are top views of this partial breakout that constitutes the figure 14 , and illustrate the kinematics of the system, since figure 15 , which illustrates the end of a cycle where the escape wheel 3 rotates in the clockwise direction A, under the effect of motor means 2 not shown, such as a barrel by means of a gear train.
  • the balance also rotates clockwise under the spring action of the spiral spring.
  • An actuator 6 interferes with the outside of the ring 50, at the second outer abutment surface 11.
  • the torque of the escape wheel 3 forces the second surface 62 to be superimposed under the magnetized crown 50.
  • the second barrier 620 has too much magnetic repulsion with the crown 50, the effect of which is to stop the wheel from exhaust 3, with the actuator 6 considered outside the ring 50.
  • the figure 16 shows the continuation of the stroke of the pendulum clockwise, which passes through the neutral point where the return torque of the spiral spring is zero, and the second surface 62 begins to apply a time pulse to the balance by magnetic repulsion, similarly to a constant force.
  • the following figures include arrows illustrating the rotations already made of the balance wheel and the escape wheel from this stage.
  • the figure 17 shows the end of the hour pulse, the second surface 62 crosses the junction surface 12, and escapes the inner beak 13 which delimits it.
  • the rocker releases the second surface 62 of the actuator 6, and does not oppose the passage of the second barrier 620 or stop 9.
  • the escape wheel 3 can then begin to turn clockwise.
  • the figure 18 shows the system at the beginning of the alternation of the balance, which rotates under the effect of the pulse in the clockwise direction H, and the rotation of the exhaust street 3.
  • the actuator 6 enters the domain delimited by the 'grip of the crown 50, inside thereof.
  • the figure 19 shows the arrival of an actuator 6 in interference with the inside of the ring 50, at a first internal stop complementary surface 10, the balance always rotating in clockwise direction H under the effect of the pulse,
  • the torque of the escape wheel 3 forces the second surface 62 to be superimposed under the magnetized crown 50.
  • the second barrier 620 has too much magnetic repulsion with the crown 50, the effect of which is to stop the wheel from exhaust 3, with the actuator 6 considered inside the ring 50.
  • the pendulum continues to rotate in a clockwise direction H, up to the maximum amplitude, the escape wheel 3 still being stopped, as visible in FIG. figure 20 .
  • the balance always rotates counter-clockwise AH
  • the ring 50 passes behind a second actuator 6B which is kept at a standstill, behind the actuator 6A which is in the locking position on the first internal stop complementary surface 10 and waiting for his release, which will allow to apply the impulse to the pendulum, this time in the anti-clockwise direction.
  • at least two actuators 6: 6A, 6B can thus remain in the inner volume of the ring 50.
  • the figure 24 shows, like the figure 17 , the end of the hour pulse, the second surface 62 crosses the junction surface 12, and escapes the inner beak 13 which delimits it.
  • the rocker releases the second surface 62 of the actuator 6, and does not oppose the passage of the second barrier 620 and the stop 9.
  • the escape wheel 3 can then start turning clockwise.
  • the figure 25 shows the docking of an actuator 6 at the second outer abutment surface 11 of the crown 50, and, as previously, the stopping of the escape wheel 3.
  • the figure 26 illustrates the end of the anti-clockwise rotation of the balance wheel, the escape wheel 3 being at a standstill.
  • the figure 27 shows the passage of the pendulum clockwise H2, the escape wheel 3 is still at a standstill.
  • the pendulum continues its hourly rotation.
  • the figure 29 shows the start of the time pulse, the escape wheel 3 is still at a standstill.
  • the amplitude of the two alternations is substantially symmetrical. It should be noted that, in the example illustrated by the figures, the pulses are not exactly given for the same angular position of the plate, an optimized escape pattern, within the range of the watchmaker of exhausts, allows to improve this situation.
  • the mechanism according to the invention is designed to handle the case of a too high torque.
  • the figure 30 illustrates the system for a nominal torque at the escape wheel.
  • the figure 31 shows a torque at the escape wheel which is higher than the nominal: in case of exceeding the nominal torque at the escape wheel, the mechanical stops 9 of the actuator 6 avoid a stall system.
  • the figure 32 shows, in this same case, the continued pivoting of the balance in a clockwise direction H, with a mechanical stop 9 bearing against the second complementary abutment surface 11 of the outer ring 50.
  • figure 33 represents the moment before a so-called mechanical pulse, where the mechanical stop 9 bears on an external nose 14 which marks the nominal between the second complementary abutment surface 11 of the outer ring 50 and the junction surface 12.
  • figure 34 shows the role of the inclined junction surface 12, the ring 50, which prints a mechanical type pulse in the same way as in a traditional cylinder exhaust. This makes it possible to ensure the operation of the system even if the torque is too high.
  • the figure 35 shows the end of this mechanical impulse.
  • the invention provides a higher efficiency than in a conventional cylinder exhaust.
  • the chronometric properties of an escapement according to the invention are satisfactory.

Description

Domaine de l'inventionField of the invention

L'invention concerne un mécanisme d'échappement d'horlogerie, comportant une roue d'échappement soumise à un couple de pivotement, de moment inférieur ou égal à un moment nominal, autour d'un premier axe de pivotement, et un résonateur solidaire d'un mobile régulateur monté pivotant autour d'un deuxième axe de pivotement réel ou virtuel, ladite roue d'échappement comportant une pluralité d'actionneurs régulièrement espacés sur sa périphérie, et chacun agencé pour coopérer directement avec au moins une première piste dudit mobile régulateur.The invention relates to a clock escapement mechanism, comprising an escapement wheel subjected to a pivoting torque, of moment less than or equal to a nominal moment, around a first pivot axis, and a solidary resonator of a movable regulator pivoted about a second axis of real or virtual pivoting, said escape wheel comprising a plurality of actuators regularly spaced on its periphery, and each arranged to cooperate directly with at least one first track of said mobile regulator .

L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel mécanisme d'échappement, et comportant des moyens moteurs d'entraînement soumettant une dite roue d'échappement à un couple de pivotement de sens unique autour d'un premier axe de pivotement.The invention also relates to a clockwork movement comprising at least one such escape mechanism, and comprising driving motor means subjecting said exhaust wheel to a single-direction pivoting torque around a first axis of rotation. pivoting.

L'invention concerne encore une pièce d'horlogerie comportant un tel mouvement.The invention also relates to a timepiece comprising such a 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 watch exhaust mechanisms, and more particularly to the field of non-contact exhausts.

Arrière-plan de l'inventionBackground of the invention

L'échappement à cylindre est satisfaisant du point de vue sécurité, mais il présente deux points faibles importants :

  • ce n'est pas un échappement libre, c'est-à-dire qu'une des dents de la roue d'échappement est constamment en contact avec le balancier et donc en frottement. Ce frottement perturbe les oscillations, diminue le rendement de l'échappement et détériore les propriétés chronométriques ;
  • ce n'est pas un échappement à force constante. L'énergie transmise au balancier dépend du couple de la roue d'échappement.
The cylinder exhaust is satisfactory from the point of view of safety, but it has two important weak points:
  • it is not a free escape, that is to say that one of the teeth of the escape wheel is constantly in contact with the balance and therefore in friction. This friction disrupts the oscillations, decreases the efficiency of the exhaust and deteriorates the chronometric properties;
  • it's not a constant force escapement. The energy transmitted to the pendulum depends on the torque of the escape wheel.

Le document GB671360 au nom de SMITH & SONS décrit un mécanisme d'échappement, dans lequel les composants appliquant un couple à la roue d'échappement sont choisis par rapport à l'élément oscillant et ses composants associés, de façon à ce que que la fraction de l'arc sur lequel se fait l'arrêt est plus longue que celle de l'arc sur lequel a lieu l'impulsion. Les éléments magnétiques sont conformés et disposés que la réaction sur l'élément oscillant, quand la roue d'échappement est bloquée, ne produit pratiquement pas de couple sur l'organe oscillant de nature à interférer sur son oscillation. Et la libération et l'arrêt de la roue d'échappement se produisent d'une manière telle que l'impulsion efficace, pour chaque direction d'oscillation, est concentrée au point médian de l'arc. Le document US 3451280 décrit un mécanisme transformant un mouvement oscillant d'un résonateur en un mouvement de rotation. L'oscillation du résonateur est transférée à un première roue magnétique qui met en rotation une deuxième roue magnétique.The document GB671360 in the name of SMITH & SONS describes an escape mechanism, in which the components applying a torque to the escape wheel are chosen with respect to the oscillating element and its associated components, so that the fraction of the arc on which is stopped is more longer than that of the arc on which the impulse takes place. The magnetic elements are shaped and arranged that the reaction on the oscillating element, when the escape wheel is locked, produces substantially no torque on the oscillating member likely to interfere with its oscillation. And the release and stopping of the escape wheel occurs in such a way that the effective pulse, for each direction of oscillation, is concentrated at the midpoint of the arc. The document US 3451280 describes a mechanism transforming an oscillating movement of a resonator into a rotational movement. Oscillation of the resonator is transferred to a first magnetic wheel which rotates a second magnetic wheel.

Résumé de l'inventionSummary of the invention

L'invention se propose d'adapter le principe des échappements à cylindre mécanique, qui présente l'avantage d'assurer une sécurité en cas de couple trop important, notamment lors d'un choc, mais dont le niveau de frottements élevé altère de façon importante le rendement de l'échappement.The invention proposes to adapt the principle of mechanical cylinder exhausts, which has the advantage of providing safety in case of excessive torque, especially during an impact, but whose high level of friction alters so much. important performance of the exhaust.

L'invention se base sur le principe de la suppression du contact et du frottement dans un échappement à cylindre, par la mise en place d'aimants, ou d'électrets, ou similaires, qui, judicieusement placés, forment une répulsion magnétique ou électrostatique, qui supprime le frottement et donc le défaut principal de cet échappement. Les aimants, ou similaires, placés sur la roue d'échappement, font office de butée sans contact. Des butées mécaniques sont ajoutées pour éviter tout emballement de la roue d'échappement en cas de choc.The invention is based on the principle of the suppression of contact and friction in a cylinder escapement, by the placement of magnets, or electrets, or the like, which, judiciously placed, form a magnetic or electrostatic repulsion , which removes the friction and therefore the main defect of this exhaust. The magnets, or the like, placed on the escape wheel, act as a contactless stop. Mechanical stops are added to prevent any runaway of the escape wheel in the event of impact.

Le fait de combiner un système sans contact avec des sécurités mécaniques est un point important de l'invention.The fact of combining a non-contact system with mechanical safety devices is an important point of the invention.

A cet effet, l'invention concerne un mécanisme d'échappement d'horlogerie, comportant une roue d'échappement soumise à un couple de pivotement, de moment inférieur ou égal à un moment nominal, autour d'un premier axe de pivotement, et un résonateur solidaire d'un mobile régulateur monté pivotant autour d'un deuxième axe de pivotement réel ou virtuel, ladite roue d'échappement comportant une pluralité d'actionneurs régulièrement espacés sur sa périphérie, et chacun agencé pour coopérer directement avec au moins une première piste dudit mobile régulateur, caractérisé en ce que chaque dit actionneur comporte des premiers moyens d'arrêt magnétiques ou électrostatiques faisant barrière et agencés pour coopérer avec ladite première piste qui est magnétisée, respectivement électrisée, ou ferromagnétique, ou respectivement conductrice électrostatique, pour exercer sur ladite première piste un couple de moment supérieur audit moment nominal, et encore caractérisé en ce que chaque dit pivotement de sens unique autour d'un premier axe de pivotement, caractérisé en ce que lesdits moyens moteurs d'entraînement sont agencés pour délivrer un couple suffisant pour autoriser la superposition complète de chaque dite première surface avec ladite première piste.For this purpose, the invention relates to a clock escapement mechanism, comprising an escapement wheel subjected to a pivoting torque, of moment less than or equal to a nominal moment, around a first pivot axis, and a resonator integral with a regulating mobile mounted pivoting about a second axis of real or virtual pivoting, said escapement wheel comprising a plurality of actuators regularly spaced on its periphery, and each arranged to cooperate directly with at least a first the track of said mobile controller, characterized in that each said actuator comprises first barrier or electrostatic stop means and arranged to cooperate with said first track which is magnetized, respectively electrified, or ferromagnetic, or respectively electrostatic conductor, to exert on said first track a moment torque greater than said nominal moment, and again because actérisé in that each says one-way pivoting around a first pivot axis, characterized in that said driving motor means are arranged to deliver a sufficient torque to allow the complete superposition of each said first surface with said first track.

L'invention concerne encore une pièce d'horlogerie comportant un tel mouvement.The invention also relates to a timepiece comprising such a 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 :

  • la figure 1 représente, de façon schématisée, partielle, et en vue en plan, un mécanisme d'échappement selon l'invention, dans une alternative magnétique, où une roue d'échappement équipée d'actionneurs particuliers à sa périphérie, comportant chacun des pistes magnétiques et une butée mécanique, coopère avec un balancier à plateau porteur d'un mobile régulateur qui comporte une couronne cylindrique tronquée, et aimantée parallèlement à l'axe de pivotement du balancier ;
  • la figure 2 représente, de façon schématisée et en coupe passant par les axes de pivotement du balancier et de la roue d'échappement, le mécanisme de la figure 1
  • les figures 3 et 4 représentent, de façon analogue aux figures 1 et 2, la coopération d'une première surface magnétique d'un actionneur avec la couronne ;
  • les figures 5, 6, 6A et 7 représentent un mécanisme similaire avec des actionneurs de forme particulière, regroupant chacun une première surface magnétique, une deuxième surface magnétique, et une butée mécanique : la figure 5 en vue en plan globale, la figure 6 en vue de côté, la figure 6A en vue de dessus , la première piste magnétique étant en coopération avec la couronne aimantée, et la figure 7 en perspective dans cette même position de la figure 6A ;
  • les figures 8, 9, et 10 montrent, en vue partielle et en plan, la coopération, en cas de surcouple, des butées mécaniques des actionneurs avec, selon le cas, la surface cylindrique intérieure ou extérieure de la couronne ;
  • les figures 11 à 13 illustrent un exemple de réalisation d'un mécanisme d'échappement selon l'invention, dans une alternative magnétique : Dans cet exemple non limitatif, une roue d'échappement comporte deux disques, supérieur et inférieur, chacun équipé d'actionneurs aimantés selon une direction axiale. Cette roue d'échappement coopère avec un balancier à plateau, non représenté sur les figures 12 et 13 qui montrent seulement un mobile régulateur que porte ce plateau, et qui comporte une couronne cylindrique tronquée, aimantée selon une direction axiale ;
  • la figure 14 représente le mécanisme des figures 11 à 13, le disque supérieur n'étant pas représenté, de façon à illustrer la position des actionneurs, notamment dans la zone d'interférence avec la couronne ;
  • les figures 15 à 35 sont des vues de dessus de cet éclaté partiel que constitue la figure 14, et illustrent la cinématique du mécanisme d'échappement selon l'invention.
Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which:
  • the figure 1 represents, schematically, partially, and in plan view, an escape mechanism according to the invention, in a magnetic alternative, where an escape wheel equipped with particular actuators at its periphery, each comprising magnetic tracks and a mechanical abutment cooperates with a balance wheel bearing a movable regulator which comprises a truncated cylindrical ring, and magnetized parallel to the axis of pivoting of the balance;
  • the figure 2 represents, schematically and in section through the pivot axes of the balance wheel and the escape wheel, the mechanism of the figure 1
  • the Figures 3 and 4 represent, in a similar way to Figures 1 and 2 the cooperation of a first magnetic surface of an actuator with the crown;
  • the Figures 5, 6, 6A and 7 represent a similar mechanism with actuators of particular shape, each grouping together a first magnetic surface, a second magnetic surface, and a mechanical stop: the figure 5 in global plan view, the figure 6 in side view, the Figure 6A in plan view, the first magnetic track being in cooperation with the magnetized crown, and the figure 7 in perspective in this same position of the Figure 6A ;
  • the Figures 8, 9, and 10 show, in partial view and in plan, the cooperation, in the event of over-torque, of the mechanical stops of the actuators with, as the case may be, the inner or outer cylindrical surface of the ring;
  • the Figures 11 to 13 illustrate an exemplary embodiment of an exhaust mechanism according to the invention, in a magnetic alternative: In this non-limiting example, an escape wheel comprises two disks, upper and lower, each equipped with actuators magnetized in an axial direction. This escape wheel cooperates with a plateau balance, not shown on the figures 12 and 13 which show only a mobile regulator that carries this plate, and which has a truncated cylindrical crown magnetized in an axial direction;
  • the figure 14 represents the mechanism of Figures 11 to 13 , the upper disk is not shown, so as to illustrate the position of the actuators, especially in the interference zone with the crown;
  • the Figures 15 to 35 are top views of this partial breakout that constitutes the figure 14 , and illustrate the kinematics of the exhaust mechanism according to the invention.

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 watch exhaust mechanisms, and more particularly to the field of non-contact exhausts.

L'invention se propose d'adapter le principe des échappements à cylindre mécanique, qui présente l'avantage d'assurer une sécurité en cas de couple trop important, notamment lors d'un choc, mais dont le niveau de frottements élevé altère de façon importante le rendement de l'échappement.The invention proposes to adapt the principle of mechanical cylinder exhausts, which has the advantage of providing safety in case of excessive torque, especially during an impact, but whose high level of friction alters so much. important performance of the exhaust.

A cet effet, 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.For this purpose, the invention relates to a watch exhaust 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 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.This escapement mechanism 1 comprises an escape wheel 3, which is subjected to a pivoting torque, of moment less than or equal to a nominal moment, around a first pivot axis D1, under the action of such means. couple supply.

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.This exhaust mechanism 1 comprises a regulator or resonator member 4 integral with a regulating wheel 5, preferably pivotally mounted around a second real or virtual pivot axis D2.

La roue d'échappement 3 comportant une pluralité d'actionneurs 6, qui sont régulièrement espacés sur sa périphérie. Chacun de ces actionneurs 6 est agencé pour coopérer directement avec au moins une première piste 7 que comporte le mobile régulateur 5.The escape wheel 3 having a plurality of actuators 6, which are regularly spaced on its periphery. Each of these actuators 6 is arranged to cooperate directly with at least one first track 7 that comprises the regulating wheel 5.

Selon l'invention, chaque tel actionneur 6 comporte des premiers moyens d'arrêt magnétiques ou électrostatiques faisant barrière et agencés pour coopérer avec une telle au moins une première piste 7 qui est magnétisée, respectivement électrisée, ou ferromagnétique, ou respectivement conductrice électrostatique, pour exercer sur cette première piste 7 un couple de moment supérieur au moment nominal.According to the invention, each such actuator 6 comprises first barrier or electrostatic stopping means and arranged to cooperate with such at least one first track 7 which is magnetized, respectively electrified, or electromagnetic, or electrostatically conductive respectively, for exert on this first track 7 a moment torque greater than the nominal moment.

Et chaque actionneur 6 comporte encore des deuxièmes moyens d'arrêt agencés pour constituer une butée de limitation de course, agencée pour constituer un mécanisme d'échappement autonome avec au moins une première surface complémentaire de butée 10 que comporte le mobile régulateur 5.And each actuator 6 further comprises second stop means arranged to constitute a stroke limiting stop, arranged to constitute an autonomous exhaust mechanism with at least a first abutment complementary surface 10 that comprises the regulating wheel 5.

Plus particulièrement, ces premiers moyens d'arrêt comportent une surface 61, 610, 62, 620, qui est magnétisée, respectivement électrisée, ou ferromagnétique, ou respectivement conductrice électrostatique, faisant barrière, et qui est agencée pour coopérer avec la première piste 7 qui est magnétisée, respectivement électrisée, ou ferromagnétique, ou respectivement conductrice électrostatique, de façon à créer entre la première piste 7 et chaque surface 61, 610, 62, 620, de l'actionneur 6 concerné un couple de moment supérieur audit moment nominal.More particularly, these first stop means comprise a surface 61, 610, 62, 620, which is magnetized, respectively electrified, or ferromagnetic, or respectively electrostatic conductive, barrier, and which is arranged to cooperate with the first track 7 which is magnetized, respectively electrified, or ferromagnetic, or respectively electrostatic conductive, so as to create between the first track 7 and each surface 61, 610, 62, 620, the actuator 6 concerned a moment torque greater than said nominal moment.

Plus particulièrement, ces premiers moyens d'arrêt comportent, agencées pour coopérer avec la première piste, d'une part une première surface 61, 62, pour exercer un couple avec un premier moment inférieur à un deuxième moment d'un couple d'arrêt qu'exerce d'autre part une deuxième surface 610, 620,faisant barrière où règne un champ magnétique, respectivement électrostatique, d'intensité supérieure au champ magnétique, respectivement électrostatique, présent au niveau de la première surface 61, 62, et la deuxième surface 610, 620, étant agencée pour coopérer avec au moins une première surface complémentaire de butée 10 que comporte le mobile régulateur 5 pour constituer avec elle un mécanisme d'échappement autonome.More particularly, these first stop means comprise, arranged to cooperate with the first track, on the one hand a first surface 61, 62, to exert a torque with a first moment less than a second moment of a stop torque on the other hand exerts a second surface 610, 620, barrier where reigns a magnetic field, respectively electrostatic, of greater intensity than the magnetic field, respectively electrostatic, present at the first surface 61, 62, and the second 610 surface, 620, being arranged to cooperate with at least a first complementary abutment surface 10 that comprises the regulating mobile 5 to form with it an autonomous exhaust mechanism.

Plus particulièrement, les deuxièmes moyens d'arrêt comportent une butée mécanique 9, qui est agencée pour coopérer, en butée de limitation de course, avec au moins une première surface complémentaire de butée 10 que comporte le mobile régulateur 5, pour constituer avec elle un mécanisme d'échappement autonome.More particularly, the second stop means comprise a mechanical stop 9, which is arranged to cooperate, as a stroke limiting stop, with at least a first abutment complementary surface 10 that comprises the regulating wheel 5, to form with it a autonomous exhaust mechanism.

Plus particulièrement, chaque tel actionneur 6 comporte successivement, dans un sens unique d'entrée en coopération avec la première piste 7, une dite première surface 61, 62, une deuxième surface 610, 620), et une butée mécanique 9.More particularly, each such actuator 6 comprises successively, in a single direction of entry in cooperation with the first track 7, a said first surface 61, 62, a second surface 610, 620), and a mechanical stop 9.

Plus particulièrement, une première surface 61 magnétisée, respectivement électrisée, ou ferromagnétique, ou respectivement conductrice électrostatique, est agencée pour coopérer avec une telle au moins une première piste 7 qui est magnétisée, respectivement électrisée, ou ferromagnétique, ou respectivement conductrice électrostatique, de façon à repousser ou attirer chaque première surface 61 de chaque actionneur 6.More particularly, a first magnetized surface, respectively electrified, or ferromagnetic, or respectively electrostatic conductive, is arranged to cooperate with such at least one first track 7 which is magnetized, respectively electrified, or electromagnetic, respectively electrostatically conductive, so to repel or attract each first surface 61 of each actuator 6.

Et chaque dit actionneur 6 comporte une butée mécanique 9, qui est agencée pour coopérer, en butée de limitation de course, avec au moins une première surface complémentaire de butée 10, ou/et avec une surface de jonction 12 oblique, que comporte le mobile régulateur 5, pour constituer avec cette surface, ou avec ces surfaces, un mécanisme d'échappement autonome.And each said actuator 6 comprises a mechanical stop 9, which is arranged to cooperate, limit stop stroke, with at least a first complementary abutment surface 10, and / or with a junction surface 12 oblique, that includes the mobile regulator 5, to constitute with this surface, or with these surfaces, an autonomous exhaust mechanism.

Le mécanisme d'échappement 1 selon l'invention est plus particulièrement un échappement à repos sans contact. En effet, le rôle de la butée mécanique est d'assurer le fonctionnement du mécanisme d'échappement même en cas d'application d'un sur-couple ou lors d'un choc : en marche normale, la coopération des premières surfaces 61 avec la ou les pistes 7 du mobile régulateur 5 suffit à assurer le fonctionnement de l'échappement.The exhaust mechanism 1 according to the invention is more particularly an exhaust at rest without contact. Indeed, the role of the mechanical stop is to ensure the operation of the escape mechanism even when applying an over-torque or during an impact: in normal operation, the cooperation of the first surfaces 61 with the track or tracks 7 of the mobile regulator 5 is sufficient to ensure the operation of the exhaust.

De préférence, la roue d'échappement 3 est soumise à un couple de pivotement de sens unique autour d'un premier axe de pivotement D1, sous l'action du couple auquel elle est soumise, notamment en provenance des moyens moteurs d'entraînement 2.Preferably, the escape wheel 3 is subjected to a one-way pivoting torque about a first pivot axis D1, under the action of the torque to which it is subjected, in particular from the driving motor means 2 .

De préférence, le résonateur 4 est en mouvement de pivotement alternatif, et est solidaire d'un tel mobile régulateur 5 monté pivotant autour d'un deuxième axe de pivotement D2.Preferably, the resonator 4 is in reciprocating pivoting movement, and is integral with such a movable regulator 5 pivotally mounted about a second pivot axis D2.

De préférence, tous les actionneurs 6 sont identiques entre eux. Ils ont de préférence un positionnement radial identique.Preferably, all the actuators 6 are identical to each other. They preferably have identical radial positioning.

Dans la réalisation particulière illustrée sur les figures, la première piste 7 est située sur un secteur d'un corps de révolution axé sur le deuxième axe de pivotement D2 et est d'amplitude angulaire strictement inférieure à 360°. Cette première piste 7 peut être continue comme dans le cas illustré, ou encore être constituée de tronçons de piste voisins les uns des autres sur au moins une partie de la périphérie du mobile régulateur 5. Dans une réalisation particulière, la première piste 7 magnétisée, respectivement électrisée, est formée d'une succession de plots aimantés, respectivement électrisés. Dans la suite de la présente description, on appelle indifféremment « première piste 7 » l'une ou l'autre exécution.In the particular embodiment illustrated in the figures, the first track 7 is located on a sector of a body of revolution oriented on the second pivot axis D2 and has an angular amplitude strictly less than 360 °. This first track 7 can be continuous as in the illustrated case, or be consisting of track sections adjacent to each other on at least a portion of the periphery of the regulator 5. In a particular embodiment, the first magnetized track, respectively electrified, is formed of a succession of magnetized pads, respectively electrified. In the remainder of the present description, either "first track 7" is used interchangeably.

De préférence, la première piste 7 est plane, et tous les actionneurs 6 qui sont agencés pour coopérer avec elle ont leurs premières surfaces 61 situées dans un même plan.Preferably, the first track 7 is flat, and all the actuators 6 which are arranged to cooperate with it have their first surfaces 61 located in the same plane.

Dans une réalisation particulière non limitative, et tel que visible sur les figures, la première surface complémentaire de butée 10 est portée par une couronne tronquée 50, qui est un secteur d'un corps de révolution axé sur le deuxième axe de pivotement D2. Cette première surface complémentaire de butée 10 est d'amplitude angulaire strictement inférieure à 360°, de façon à minimiser l'échange d'énergie entre le résonateur 4 et la roue d'échappement 3, hormis au voisinage de la position d'équilibre du résonateur.In a particular non-limiting embodiment, and as visible in the figures, the first abutment complementary surface 10 is carried by a truncated crown 50, which is a sector of a body of revolution centered on the second pivot axis D2. This first abutment complementary surface 10 is of angular amplitude strictly less than 360 °, so as to minimize the energy exchange between the resonator 4 and the escape wheel 3, except in the vicinity of the equilibrium position of the resonator.

Dans une réalisation particulière, la première piste 7 génère un premier champ magnétique, respectivement électrostatique, qui tend à repousser chaque première surface 61 de chaque actionneur 6, laquelle première surface 61 est magnétisée, respectivement électrisée, selon une polarité opposée à celle du premier champ magnétique, respectivement électrostatique.In a particular embodiment, the first track 7 generates a first magnetic field, respectively electrostatic, which tends to push each first surface 61 of each actuator 6, which first surface 61 is magnetized, respectively electrified, in a polarity opposite to that of the first field magnetic, respectively electrostatic.

Dans une réalisation particulière, chaque actionneur 6 comporte une première surface 61 magnétisée, respectivement électrisée, agencée pour coopérer avec la première piste 7 qui est magnétisée, respectivement électrisée, de façon à attirer chaque première surface 61 de chaque actionneur 6. La roue d'échappement 3 peut aussi comporter une pluralité d'aimants qui interagissent avec une piste en fer ou en matériau ferromagnétique, respectivement électrostatiquement conducteur, sur un plateau solidaire du résonateur 4.In a particular embodiment, each actuator 6 comprises a first magnetized surface 61, respectively electrified, arranged to cooperate with the first track 7 which is magnetized, respectively electrified, so as to attract each first surface 61 of each actuator 6. The wheel of Exhaust 3 may also comprise a plurality of magnets that interact with a track of iron or ferromagnetic material, respectively electrostatically conductive, on a plate integral with the resonator 4.

Plus particulièrement, ce plateau est un anneau comportant des trous disposés de façon à former des chicanes.More particularly, this plate is a ring having holes arranged to form baffles.

De façon particulière, chaque dit actionneur 6 comporte une deuxième surface 62 magnétisée, respectivement électrisée, agencée pour coopérer avec une deuxième piste 8 du mobile régulateur 5. De préférence, la deuxième piste 8 est plane, et tous les actionneurs 6 qui sont agencés pour coopérer avec elle ont leurs deuxièmes surfaces 61 situées dans un même plan. Plus particulièrement, cette deuxième piste 8 est parallèle à ladite première piste 7, et perpendiculaire au deuxième axe de pivotement D2.In particular, each said actuator 6 comprises a second surface 62 magnetized, respectively electrified, arranged to cooperate with a second track 8 of the mobile regulator 5. Preferably, the second track 8 is flat, and all the actuators 6 which are arranged to cooperate with her have their second surfaces 61 located in the same plane. More particularly, this second track 8 is parallel to said first track 7, and perpendicular to the second pivot axis D2.

De façon similaire à la première piste 7, cette deuxième piste 8 est un secteur annulaire axé sur le deuxième axe de pivotement D2 et d'amplitude angulaire strictement inférieure à 360°, et elle génère un deuxième champ magnétique, respectivement électrostatique, qui tend à repousser chaque deuxième surface 62, laquelle deuxième surface 62 est magnétisée, respectivement électrisée, selon une polarité opposée à celle dudit deuxième champ magnétique, respectivement électrostatique. Dans une réalisation particulière, la deuxième piste 8 magnétisée, respectivement électrisée, est formée d'une succession de plots aimantés, respectivement électrisés.Similar to the first track 7, this second track 8 is an annular sector oriented on the second pivot axis D2 and of angular amplitude strictly less than 360 °, and it generates a second magnetic field, respectively electrostatic, which tends to pushing each second surface 62, which second surface 62 is magnetized, respectively electrified, in a polarity opposite to that of said second magnetic field, respectively electrostatic. In a particular embodiment, the second magnetized track 8, respectively electrified, is formed of a succession of magnetized pads, respectively electrified.

De façon avantageuse, tel que visible sur les figures 12 et 13, la roue d'échappement 3 comporte au moins un disque supérieur 31 comportant les premières surfaces 61, et un disque inférieur 32 comportant les deuxièmes surfaces 62 situées au droit de ces premières surfaces 61 et opposées à celles-ci, et la roue d'échappement 3 comporte des moyens de fermeture de champ magnétique, respectivement électrostatique, entre le disque supérieur 31 et le disque inférieur 32. Cette disposition évite un effort axial trop important sur la roue d'échappement. De préférence les efforts exercés de part et d'autre du mobile régulateur 5 sont égaux.Advantageously, as visible on the figures 12 and 13 , the escape wheel 3 comprises at least one upper disc 31 comprising the first surfaces 61, and a lower disc 32 having the second surfaces 62 located at the right of these first surfaces 61 and opposite thereto, and the wheel of Exhaust 3 comprises magnetic field closure means, respectively electrostatic, between the upper disk 31 and the lower disk 32. This arrangement avoids excessive axial force on the escape wheel. Preferably the forces exerted on either side of the regulator 5 are equal.

Selon une caractéristique particulière de l'invention, chaque butée mécanique 9 est encore agencée pour coopérer, en butée de limitation de course, avec au moins une deuxième surface complémentaire de butée 11 que comporte le mobile régulateur 5. Cette deuxième surface complémentaire de butée 11 est plus particulièrement portée par une surface de révolution axée sur le deuxième axe de pivotement D2, et est d'amplitude angulaire strictement inférieure à 360°.According to a particular characteristic of the invention, each mechanical stopper 9 is further arranged to cooperate, as a stroke limiting stop, with at least a second abutment complementary surface 11 that comprises the regulating wheel 5. This second abutment complementary surface 11 is more particularly carried by a surface of revolution oriented on the second pivot axis D2, and is of angular amplitude strictly less than 360 °.

De préférence, la deuxième surface complémentaire de butée 11 est reliée à la première surface complémentaire de butée 10 par au moins une surface de jonction 12, laquelle est agencée pour constituer une rampe d'impulsion de le résonateur 4 quand cette surface de jonction 12 est en appui de butée sur un actionneur 6, agencée pour apporter de l'énergie au résonateur au voisinage de sa position d'équilibre. Dans une réalisation préférée, non limitative, illustrée par les figures, cette surface de jonction 12 est plane ou sensiblement plane, parallèle au deuxième axe de pivotement D2, et inclinée par rapport au plan radial la joignant au deuxième axe de pivotement D2 et passant par celui-ci.Preferably, the second abutment complementary surface 11 is connected to the first abutment complementary surface 10 by at least one junction surface 12, which is arranged to constitute a pulse ramp of the resonator 4 when this junction surface 12 is in abutment on an actuator 6, arranged to bring energy to the resonator in the vicinity of its equilibrium position. In a preferred non-limiting embodiment, illustrated by the figures, this joining surface 12 is flat or substantially flat, parallel to the second pivot axis D2, and inclined relative to the radial plane joining it to the second pivot axis D2 and passing therethrough.

Dans une réalisation particulière, la butée mécanique 9 comporte, de façon similaire, une rampe d'impulsion agencée pour apporter de l'énergie au résonateur au voisinage de sa position d'équilibre.In a particular embodiment, the mechanical stop 9 comprises, in a similar manner, a pulse ramp arranged to bring energy to the resonator in the vicinity of its equilibrium position.

De préférence, une telle rampe d'impulsion n'apporte de l'énergie au résonateur au voisinage de sa position d'équilibre que si le couple moteur imprimé à la roue d'échappement 3 est tel que la répulsion, ou respectivement l'attraction, entre la première piste 7 et chaque première surface 61, est insuffisante pour éviter le contact entre la butée mécanique 9 et le mobile régulateur 5.Preferably, such a pulse ramp brings energy to the resonator in the vicinity of its equilibrium position only if the engine torque printed at the escape wheel 3 is such that the repulsion, or the attraction respectively. , between the first track 7 and each first surface 61, is insufficient to avoid contact between the mechanical stop 9 and the regulating mobile 5.

Dans une réalisation particulière, la première piste 7 magnétisée, respectivement électrisée, est formée d'une succession de plots aimantés, respectivement électrisés.In a particular embodiment, the first magnetized track 7, respectively electrified, is formed of a succession of magnetized pads, respectively electrified.

Dans un mode particulier de réalisation, chaque première surface 61 magnétisée, respectivement électrisée, comporte une section dégressive dans la direction radiale d'éloignement par rapport au premier axe de pivotement D1, de façon à ce que l'aire d'une surface de superposition 71 correspondant à la projection de la première surface 61 sur la première piste 7 soit variable pendant le pivotement relatif de la roue d'échappement 2 et du mobile régulateur 5.In a particular embodiment, each first magnetized surface, respectively electrified, has a degressive section in the radial direction away from the first pivot axis D1, so that the area of a superposition surface 71 corresponding to the projection of the first surface 61 on the first track 7 is variable during the relative pivoting of the escape wheel 2 and the regulator 5.

De préférence, la roue d'échappement 3 apporte, de façon progressive, de l'énergie au mobile régulateur 5, et ce mobile régulateur 5 restitue de façon instantanée toute cette énergie accumulée, sous forme d'une impulsion imprimée au résonateur 4, ce mécanisme d'échappement 1 constituant ainsi un mécanisme d'échappement à force constante.Preferably, the escape wheel 3 gradually supplies energy to the regulator 5, and this mobile regulator 5 instantaneously restores all this accumulated energy, in the form of a pulse printed on the resonator 4. exhaust mechanism 1 thus constituting a constant force escapement mechanism.

Dans un mode de réalisation illustré par les figures, le mécanisme d'échappement 1 selon l'invention constitue un mécanisme d'échappement à cylindre, où la première surface complémentaire de butée 10 est la surface intérieure d'un secteur tubulaire cylindrique, et où la deuxième surface complémentaire de butée 11 est la surface extérieure de ce secteur tubulaire cylindrique.In an embodiment illustrated by the figures, the escapement mechanism 1 according to the invention constitutes a cylinder escapement mechanism, where the first abutment complementary surface 10 is the inner surface of a cylindrical tubular sector, and wherein the second abutment complementary surface 11 is the outer surface of this cylindrical tubular sector.

Dans un mode de réalisation alternatif, le mécanisme d'échappement 1 selon invention constitue un mécanisme d'échappement à chevilles de type Lepaute, où la roue d'échappement 3 comporte une demi-cheville au niveau de chaque actionneur 6, et où la première surface complémentaire de butée 10 est la surface intérieure d'une première branche de compas, et où la deuxième surface complémentaire de butée 11 est la surface extérieure d'une deuxième branche de compas. La surface intérieure de la première branche de compas et la surface extérieure de ladite deuxième branche de compas sont séparées par un espace, dont la largeur est supérieure au rayon de la demi-cheville. Dans une première alternative, la première branche de compas et la deuxième branche de compas sont solidaires l'une de l'autre Dans une deuxième alternative, la première branche de compas et la deuxième branche de compas pivotent autour d'un axe commun, et sont liées l'une à l'autre par un ressort ou similaire. Cet échappement à chevilles est plus adapté à des pièces d'horlogerie statiques, l'élimination des frottements grâce à la mise en oeuvre des champs magnétiques ou électrostatiques procure une marche précise et silencieuse, qui autorise son emploi pour des pendules ou horloges de salon.In an alternative embodiment, the escapement mechanism 1 according to the invention constitutes a Lepaute type escapement mechanism, where the escape wheel 3 comprises a half-pin at the level of each actuator 6, and where the first complementary stop surface 10 is the inner surface of a first compass leg, and wherein the second abutment complementary surface 11 is the outer surface of a second compass leg. The inner surface of the first compass leg and the outer surface of said second compass leg are separated by a space, the width of which is greater than the radius of the half-pin. In a first alternative, the first compass branch and the second compass branch are integral with each other. In a second alternative, the first compass branch and the second compass branch pivot about a common axis, and are connected to each other by a spring or the like. This ankle escapement is more suited to static timepieces, the elimination of friction through the implementation of magnetic or electrostatic fields provides a precise and silent, which allows its use for clocks or living room clocks.

Dans une réalisation très particulière, et plus particulièrement détaillée ci-après avec les figures 12 à 31, chaque actionneur 6 comporte, entre la première surface 61 (ou respectivement la deuxième surface 62) et la butée mécanique 9, une barrière 610 (respectivement 620) magnétisée, respectivement électrisée, où règne un champ magnétique, respectivement électrostatique, d'intensité supérieure au champ magnétique, respectivement électrostatique, présent au niveau de la première surface 61 (ou respectivement la deuxième surface 62).In a very particular embodiment, and more particularly detailed below with the Figures 12 to 31 each actuator 6 comprises, between the first surface 61 (or respectively the second surface 62) and the mechanical stop 9, a barrier 610 (respectively 620) magnetized, respectively electrified, where there is a magnetic field, respectively electrostatic, of higher intensity the magnetic field, respectively electrostatic, present at the first surface 61 (or respectively the second surface 62).

L'échappement est ainsi amélioré et constitue un système à force constante. La combinaison de plusieurs pôles magnétiques, ou respectivement électrostatiques, qui se succèdent dans le défilement de la roue d'échappement 3 par rapport au mobile régulateur 5 permet de recharger un potentiel magnétique, ou respectivement électrostatique, de répulsion (entre ces pôles et le mobile régulateur 5), qui est libéré au passage de l'encoche de plateau du balancier. La roue d'échappement 3 a alors suffisamment de couple pour superposer la première surface 61 (ou respectivement la deuxième surface 62) à la première piste 7 (ou respectivement la deuxième piste 8), mais pas suffisamment pour y superposer la barrière 610 (respectivement 620) qui arrête la roue.The exhaust is thus improved and constitutes a constant force system. The combination of several magnetic poles, or respectively electrostatic poles, which succeed one another in the movement of the escape wheel 3 with respect to the mobile regulator 5 makes it possible to recharge a magnetic potential, or electrostatic respectively, repulsion (between these poles and the mobile regulator 5), which is released at the passage of the pendulum plate notch. The escape wheel 3 then has enough torque to superimpose the first surface 61 (or respectively the second surface 62) to the first track 7 (or respectively the second track 8), but not enough to overlay the barrier 610 (respectively 620) which stops the wheel.

L'énergie transmise correspond donc à ce potentiel de répulsion magnétique ou électrostatique entre d'une part la première surface 61 (ou respectivement la deuxième surface 62) et d'autre part la première piste 7 (ou respectivement la deuxième piste 8), potentiel qui est constant, ce qui procure un effort ou couple constant, qu'on qualifie plus généralement de force constante.The transmitted energy therefore corresponds to this magnetic or electrostatic repulsion potential between, on the one hand, the first surface 61 (or respectively the second surface 62) and, on the other hand, the first track 7 (or respectively the second track 8), which is constant potential, which provides a constant force or torque, which more generally refers to constant force.

Il faut noter que la géométrie de l'échappement peut être sensiblement différente de l'échappement à cylindre classique. Par exemple :

  • le diamètre du cylindre peut être plus élevé ;
  • un nombre de dents supérieur à un peut être compris dans le cylindre ;
  • une impulsion n'est pas forcément donnée à chaque alternance ;
  • l'axe n'est pas nécessairement creux, un plateau peut remplir la fonction du cylindre ;
  • le système peut fonctionner à de petites amplitudes.
It should be noted that the geometry of the exhaust may be substantially different from the conventional cylinder exhaust. For example :
  • the diameter of the cylinder may be higher;
  • a number of teeth greater than one can be included in the cylinder;
  • an impulse is not necessarily given to each alternation;
  • the axis is not necessarily hollow, a plate can fulfill the function of the cylinder;
  • the system can operate at small amplitudes.

L'invention permet donc d'échapper à certaines contraintes géométriques de l'échappement à cylindre classique.The invention thus makes it possible to escape certain geometrical constraints of the conventional cylinder escapement.

Un avantage supplémentaire réside dans le fait que, la plupart du temps, les pivots sont plaqués sur les pierres, ce qui amène une différence de chronométrie entre la position de la montre en horizontale et en verticale plus faible que dans un échappement à cylindre classique.An additional advantage lies in the fact that, most of the time, the pivots are plated on the stones, which brings a difference in chronometry between the position of the watch in horizontal and vertical lower than in a conventional cylinder escapement.

La répulsion magnétique ou électrostatique peut être effectuée de différentes manières. Une possibilité est de former, tel que visible sur les figures, une roue d'échappement deux niveaux qui prend en sandwich le plateau du balancier. La roue d'échappement peut être en fer ou matériau ferromagnétique, ou respectivement conducteur électrostatique, afin de former un chemin magnétique, respectivement électrostatique. Une architecture avec un plateau deux niveaux et une roue à un niveau est également possible.Magnetic or electrostatic repulsion can be carried out in different ways. One possibility is to form, as visible in the figures, a two-level escapement wheel that sandwiches the balance plate. The escape wheel may be made of iron or ferromagnetic material, or respectively electrostatic conductor, to form a magnetic path, respectively electrostatic. Architecture with a two level shelf and a single level wheel is also possible.

Le mécanisme d'échappement 1 selon l'invention est, notamment, dépourvu d'arrêtoir tel qu'ancre ou similaire.The exhaust mechanism 1 according to the invention is, in particular, without a stopper such as anchor or the like.

L'invention concerne encore un mouvement d'horlogerie 100 comportant au moins un tel mécanisme d'échappement 1, et comportant des moyens moteurs d'entraînement 2 soumettant une roue d'échappement 3 à un couple de pivotement de sens unique autour d'un premier axe de pivotement D1. Selon l'invention, les moyens moteurs d'entraînement 2 sont agencés pour délivrer un couple suffisant pour autoriser la superposition complète de chaque première surface 61 avec la première piste 7.The invention also relates to a watch movement 100 comprising at least one such escapement mechanism 1, and comprising driving motor means 2 subjecting an escape wheel 3 to a one-way pivoting torque around a first pivot axis D1. According to the invention, the driving motor means 2 are arranged to deliver a sufficient torque to allow the complete superposition of each first surface 61 with the first track 7.

Et, dans la version avantageuse où les actionneurs 6 comportent des barrières, le couple maximal délivré par les moyens moteurs d'entraînement 2 est limité à un niveau qui est insuffisant pour autoriser la superposition complète de chaque barrière 610 avec la première piste 7.And, in the advantageous version where the actuators 6 comprise barriers, the maximum torque delivered by the driving motor means 2 is limited to a level that is insufficient to allow the complete overlay of each barrier 610 with the first runway 7.

L'invention concerne encore une pièce d'horlogerie, notamment une montre, comportant un tel mouvement 100.The invention also relates to a timepiece, in particular a watch, comprising such a movement 100.

Les figures 11 à 13 illustrent un exemple de réalisation d'un mécanisme d'échappement selon l'invention, dans une alternative magnétique, et où la roue d'échappement 3, d'axe de pivotement D1, comporte deux disques, supérieur 31 et inférieur 32, chacun équipé d'actionneurs 6 qui sont ici aimantés selon une direction axiale parallèle à D1, avec des premières surfaces 61 au niveau du disque supérieur 31, des deuxièmes surfaces 62 au niveau du disque inférieur 32, des premières barrières 610 au niveau du disque supérieur 31, des deuxièmes barrières 620 au niveau du disque inférieur 32, et, sur l'un et l'autre disque, des butées mécaniques 9. Cette roue d'échappement 3 coopère avec un balancier à plateau 4, ce dernier n'est pas représenté sur les figures 12 et 13 qui montrent seulement le mobile régulateur 5 que porte ce plateau, et qui comporte une couronne 50, de préférence cylindrique, tronquée, d'axe de pivotement D2, ici parallèle à D1. Cette couronne 50 est aimantée selon une direction axiale parallèle à D2.The Figures 11 to 13 illustrate an exemplary embodiment of an escapement mechanism according to the invention, in a magnetic alternative, and where the escape wheel 3, of pivot axis D1, comprises two disks, upper 31 and lower 32, each equipped actuators 6 which are here magnetized in an axial direction parallel to D1, with first surfaces 61 at the top disc 31, second surfaces 62 at lower disc 32, first barriers 610 at upper disc 31, second barriers 620 at the lower disk 32, and on one and the other disk, the mechanical stops 9. This escape wheel 3 cooperates with a plateau balance 4, the latter is not shown on the figures 12 and 13 which show only the mobile regulator 5 that carries this plate, and which comprises a ring 50, preferably cylindrical, truncated, pivot axis D2, here parallel to D1. This ring 50 is magnetized in an axial direction parallel to D2.

La couronne 50 comporte une surface complémentaire de butée 10 interne, et une deuxième surface complémentaire de butée 11 externe, reliées de chaque côté d'une ouverture 51 par une surface de jonction 12, de préférence pentée, et délimitée du côté intérieur par un bec intérieur 13, et du côté extérieur par un bec extérieur 14.The ring 50 has a complementary inner abutment surface 10 and a second abutment outer abutment surface 11, connected on each side of an opening 51 by a junction surface 12, preferably sloping, and delimited on the inside by a spout. inside 13, and on the outside by an outside spout 14.

Dans une exécution préférée, mais non limitative, tel que visibles sur les figures, la configuration des surfaces pentées 12 et des becs 13 et 14 n'est pas symétrique, de part et d'autre de l'ouverture 51. De préférence, les deux surfaces pentées 12 sont planes, et inclinées, et font chacune un angle de même orientation et sensiblement de même valeur, avec la radiale issue de l'axe de pivotement D2.In a preferred embodiment, but not limited to, as shown in the figures, the configuration of the sloped surfaces 12 and the spouts 13 and 14 is not symmetrical, on either side of the opening 51. Preferably, the two sloped surfaces 12 are planar, and inclined, and each make an angle of the same orientation and substantially the same value, with the radial end of the pivot axis D2.

La figure 12 montre les aimantations respectives du mobile régulateur 5 et des actionneurs 6. Le couple de la roue d'échappement 3 force une première partie aimantée, en l'occurrence la première surface 61 ou respectivement la deuxième surface 62, de l'actionneur 6 arrivant au voisinage de la couronne 50, à se superposer sur, ou respectivement sous, la couronne aimantée 50. La deuxième partie aimantée se présentant ensuite en zone d'interférence, et qui est constituée par la première barrière 610, respectivement la deuxième barrière 620, a une trop grande répulsion magnétique avec la couronne 50, dont l'effet est d'arrêter la roue d'échappement 3. Les butées mécaniques 9 empêchent un décrochage du système en cas de choc ou de couple trop élevé sur la roue d'échappement 3.The figure 12 shows the respective magnetizations of the regulator 5 and the actuators 6. The torque of the escape wheel 3 forces a first magnetized portion, in this case the first surface 61 or the second surface 62 respectively, of the actuator 6 arriving at the the vicinity of the ring 50, to be superimposed on or respectively under the magnetic ring 50. The second magnetized part then being in an interference zone, and which is formed by the first barrier 610, respectively the second barrier 620, has too much magnetic repulsion with the ring 50, the effect of which is to stop the escape wheel 3. The mechanical stops 9 prevent a stall of the system in case shock or excessively high torque on the escape wheel 3.

Comme le montre la figure 13, la réalisation de la roue d'échappement 3 en deux parties 31, 32, permet de fermer le chemin magnétique, et d'éviter une trop grande force axiale sur le plateau.As shown in figure 13 , the embodiment of the escape wheel 3 in two parts 31, 32, allows to close the magnetic path, and to avoid too great axial force on the plate.

La figure 14 représente le même ensemble, le disque supérieur 31 n'étant pas représenté, de façon à illustrer la position des actionneurs 6, notamment dans la zone d'interférence avec la couronne 50.The figure 14 represents the same assembly, the upper disk 31 not being shown, so as to illustrate the position of the actuators 6, in particular in the zone of interference with the ring 50.

Les figures 15 à 35 sont des vues de dessus de cet éclaté partiel que constitue la figure 14, et illustrent la cinématique du système, depuis la figure 15, qui illustre la fin d'un cycle où la roue d'échappement 3 tourne dans le sens horaire A, sous l'effet de moyens moteurs 2 non illustrés, tel qu'un barillet par l'intermédiaire d'un rouage. Le balancier tourne également dans le sens horaire sous l'action de rappel du ressort-spiral. Un actionneur 6 arrive en interférence avec l'extérieur de la couronne 50, au niveau de la deuxième surface complémentaire de butée 11 externe. Le couple de la roue d'échappement 3 force la deuxième surface 62 à se superposer sous la couronne aimantée 50. La deuxième barrière 620 a une trop grande répulsion magnétique avec la couronne 50, dont l'effet est d'arrêter la roue d'échappement 3, avec l'actionneur 6 considéré à l'extérieur de la couronne 50.The Figures 15 to 35 are top views of this partial breakout that constitutes the figure 14 , and illustrate the kinematics of the system, since figure 15 , which illustrates the end of a cycle where the escape wheel 3 rotates in the clockwise direction A, under the effect of motor means 2 not shown, such as a barrel by means of a gear train. The balance also rotates clockwise under the spring action of the spiral spring. An actuator 6 interferes with the outside of the ring 50, at the second outer abutment surface 11. The torque of the escape wheel 3 forces the second surface 62 to be superimposed under the magnetized crown 50. The second barrier 620 has too much magnetic repulsion with the crown 50, the effect of which is to stop the wheel from exhaust 3, with the actuator 6 considered outside the ring 50.

La figure 16 montre la poursuite de la course du balancier en sens horaire, lequel passe par le point neutre où le couple de rappel du ressort-spiral est nul, et la deuxième surface 62 commence à appliquer une impulsion horaire au balancier par répulsion magnétique, de façon analogue à une force constante.The figure 16 shows the continuation of the stroke of the pendulum clockwise, which passes through the neutral point where the return torque of the spiral spring is zero, and the second surface 62 begins to apply a time pulse to the balance by magnetic repulsion, similarly to a constant force.

Les figures suivantes comportent des flèches illustrant les rotations déjà effectuées du balancier et de la roue d'échappement depuis ce stade.The following figures include arrows illustrating the rotations already made of the balance wheel and the escape wheel from this stage.

La figure 17 montre la fin de l'impulsion horaire, la deuxième surface 62 franchit la surface de jonction 12, et échappe au bec intérieur 13 qui la délimite. Par sa rotation en sens horaire, le balancier libère la deuxième surface 62 de l'actionneur 6, et en s'oppose pas au passage de la deuxième barrière 620 ni de l'arrêt 9. La roue d'échappement 3 peut alors commencer à tourner en sens horaire.The figure 17 shows the end of the hour pulse, the second surface 62 crosses the junction surface 12, and escapes the inner beak 13 which delimits it. By its clockwise rotation, the rocker releases the second surface 62 of the actuator 6, and does not oppose the passage of the second barrier 620 or stop 9. The escape wheel 3 can then begin to turn clockwise.

La figure 18 montre le système au début de l'alternance du balancier, qui tourne sous l'effet de l'impulsion dans le sens horaire H, et la rotation de la rue d'échappement 3. L'actionneur 6 pénètre dans le domaine délimité par l'emprise de la couronne 50, à l'intérieur de celle-ci.The figure 18 shows the system at the beginning of the alternation of the balance, which rotates under the effect of the pulse in the clockwise direction H, and the rotation of the exhaust street 3. The actuator 6 enters the domain delimited by the 'grip of the crown 50, inside thereof.

La figure 19 montre l'arrivée d'un actionneur 6 en interférence avec l'intérieur de la couronne 50, au niveau d'une première surface complémentaire de butée 10 interne, le balancier tournant toujours en sens horaire H sous l'effet de l'impulsion, Le couple de la roue d'échappement 3 force la deuxième surface 62 à se superposer sous la couronne aimantée 50. La deuxième barrière 620 a une trop grande répulsion magnétique avec la couronne 50, dont l'effet est d'arrêter la roue d'échappement 3, avec l'actionneur 6 considéré à l'intérieur de la couronne 50.The figure 19 shows the arrival of an actuator 6 in interference with the inside of the ring 50, at a first internal stop complementary surface 10, the balance always rotating in clockwise direction H under the effect of the pulse, The torque of the escape wheel 3 forces the second surface 62 to be superimposed under the magnetized crown 50. The second barrier 620 has too much magnetic repulsion with the crown 50, the effect of which is to stop the wheel from exhaust 3, with the actuator 6 considered inside the ring 50.

Le balancier poursuit sa rotation en sens horaire H, jusqu'à l'amplitude maximale, la roue d'échappement 3 étant toujours à l'arrêt, tel que visible en figure 20.The pendulum continues to rotate in a clockwise direction H, up to the maximum amplitude, the escape wheel 3 still being stopped, as visible in FIG. figure 20 .

Le balancier passe alors en rotation de sens anti-horaire AH, la roue d'échappement 3 étant toujours à l'arrêt, tel que visible en figures 21 et 22, sur laquelle un bec intérieur 13 de la couronne 50 se rapproche des actionneurs 6 de la roue d'échappement 3.The balance then rotates counter clockwise AH, the escape wheel 3 is still at a standstill, as visible in FIG. Figures 21 and 22 , on which an inner spout 13 of the ring 50 approaches the actuators 6 of the escape wheel 3.

En figure 23, le balancier tourne toujours en sens anti-horaire AH, la couronne 50 passe derrière un deuxième actionneur 6B qui est maintenu à l'arrêt, derrière l'actionneur 6A qui est en position de blocage sur la première surface complémentaire de butée 10 interne et qui attend sa libération, qui va permettre d'appliquer l'impulsion au balancier, cette fois dans le sens anti-horaire. Dans cette réalisation particulière, au moins deux actionneurs 6 : 6A, 6B, peuvent ainsi rester dans le volume intérieur de la couronne 50.In figure 23 , the balance always rotates counter-clockwise AH, the ring 50 passes behind a second actuator 6B which is kept at a standstill, behind the actuator 6A which is in the locking position on the first internal stop complementary surface 10 and waiting for his release, which will allow to apply the impulse to the pendulum, this time in the anti-clockwise direction. In this particular embodiment, at least two actuators 6: 6A, 6B, can thus remain in the inner volume of the ring 50.

La figure 24 montre, comme la figure 17, la fin de l'impulsion horaire, la deuxième surface 62 franchit la surface de jonction 12, et échappe au bec intérieur 13 qui la délimite. Par sa rotation en sens anti-horaire, le balancier libère la deuxième surface 62 de l'actionneur 6, et en s'oppose pas au passage de la deuxième barrière 620 ni de l'arrêt 9. La roue d'échappement 3 peut alors commencer à tourner en sens horaire.The figure 24 shows, like the figure 17 , the end of the hour pulse, the second surface 62 crosses the junction surface 12, and escapes the inner beak 13 which delimits it. By rotating counter-clockwise, the rocker releases the second surface 62 of the actuator 6, and does not oppose the passage of the second barrier 620 and the stop 9. The escape wheel 3 can then start turning clockwise.

La figure 25 montre l'accostage d'un actionneur 6 au niveau de la deuxième surface complémentaire de butée 11 externe de la couronne 50, et, comme précédemment, l'arrêt de la roue d'échappement 3.The figure 25 shows the docking of an actuator 6 at the second outer abutment surface 11 of the crown 50, and, as previously, the stopping of the escape wheel 3.

La figure 26 illustre la fin de la rotation anti-horaire AH du balancier, la roue d'échappement 3 étant à l'arrêt.The figure 26 illustrates the end of the anti-clockwise rotation of the balance wheel, the escape wheel 3 being at a standstill.

La figure 27 montre le passage du balancier en sens horaire H2, la roue d'échappement 3 étant toujours à l'arrêt. En figure 28 le balancier poursuit sa rotation horaire. La figure 29 montre le début de l'impulsion horaire, la roue d'échappement 3 étant toujours à l'arrêt. L'amplitude des deux alternances est sensiblement symétrique. Il est à noter, que, sur l'exemple illustré par les figures, les impulsions ne sont pas données exactement pour la même position angulaire du plateau, un tracé optimisé d'échappement, à la portée du constructeur horloger d'échappements, permet d'améliorer cette situation.The figure 27 shows the passage of the pendulum clockwise H2, the escape wheel 3 is still at a standstill. In figure 28 the pendulum continues its hourly rotation. The figure 29 shows the start of the time pulse, the escape wheel 3 is still at a standstill. The amplitude of the two alternations is substantially symmetrical. It should be noted that, in the example illustrated by the figures, the pulses are not exactly given for the same angular position of the plate, an optimized escape pattern, within the range of the watchmaker of exhausts, allows to improve this situation.

Le mécanisme selon l'invention est conçu pour traiter le cas d'un couple trop élevé.The mechanism according to the invention is designed to handle the case of a too high torque.

La figure 30 illustre le système pour un couple nominal à la roue d'échappement.The figure 30 illustrates the system for a nominal torque at the escape wheel.

La figure 31 montre un couple à la roue d'échappement qui est plus élevé que le nominal: en cas de dépassement du couple nominal à la roue d'échappement, les butées mécaniques 9 de l'actionneur 6 évitent un décrochage du système. La figure 32 montre, dans ce même cas, la poursuite de pivotement du balancier en sens horaire H, avec une butée mécanique 9 en appui sur la deuxième surface complémentaire de butée 11 externe de la couronne 50. La figure 33 représente l'instant précédant une impulsion dite mécanique, où la butée mécanique 9 est en appui sur un bec externe 14 qui marque la nominal entre la deuxième surface complémentaire de butée 11 externe de la couronne 50 et la surface de jonction 12. La figure 34 montre ensuite le rôle de la surface de jonction 12 inclinée, de la couronne 50, qui imprime une impulsion de type mécanique de la même manière que dans un échappement à cylindre traditionnel. Ceci permet d'assurer le fonctionnement du système même en cas de couple trop élevé. La figure 35 montre la fin de cette impulsion mécanique.The figure 31 shows a torque at the escape wheel which is higher than the nominal: in case of exceeding the nominal torque at the escape wheel, the mechanical stops 9 of the actuator 6 avoid a stall system. The figure 32 shows, in this same case, the continued pivoting of the balance in a clockwise direction H, with a mechanical stop 9 bearing against the second complementary abutment surface 11 of the outer ring 50. figure 33 represents the moment before a so-called mechanical pulse, where the mechanical stop 9 bears on an external nose 14 which marks the nominal between the second complementary abutment surface 11 of the outer ring 50 and the junction surface 12. figure 34 then shows the role of the inclined junction surface 12, the ring 50, which prints a mechanical type pulse in the same way as in a traditional cylinder exhaust. This makes it possible to ensure the operation of the system even if the torque is too high. The figure 35 shows the end of this mechanical impulse.

L'invention procure un rendement plus élevé que dans un échappement à cylindre classique. Les propriétés chronométriques d'un échappement selon l'invention sont satisfaisantes.The invention provides a higher efficiency than in a conventional cylinder exhaust. The chronometric properties of an escapement according to the invention are satisfactory.

Claims (25)

  1. Timepiece escapement mechanism (1), comprising an escape wheel (3) subjected to a rotational torque, having a lower or equal moment to a nominal moment, about a first pivot axis (D1), and a resonator (4) integral with a regulating mobile component (5) mounted to pivot about a second real or virtual pivot axis (D2), said escape wheel (3) comprising a plurality of actuators (6) regularly spaced on the periphery thereof and each arranged to cooperate directly with at least a first track (7) of said regulating mobile component (5), characterized in that each said actuator (6) includes first magnetic or electrostatic stopping means forming a barrier and arranged to cooperate with said first track (7) which is magnetically, or respectively electrically charged, or ferromagnetic, or respectively electrostatically conductive, to exert on said first track (7) a torque having a greater moment than said nominal moment, and further characterized in that each said actuator (6) also includes second, mechanical stopping means arranged to constitute an end-of-travel stop, arranged to constitute an autonomous escapement mechanism with at least a first complementary stop surface (10) comprised in said regulating mobile component (5).
  2. Escapement mechanism (1) according to claim 1, characterized in that said first stopping means comprise a surface (61; 610; 62; 620), which is magnetically, or respectively electrically charged, or ferromagnetic, or respectively electrostatically conductive, forming a barrier, and arranged to cooperate with said first track (7) which is magnetically, or respectively electrically charged, or ferromagnetic, or respectively electrostatically conductive, so as to create between said first track (7) and each said surface (61; 610; 62; 620) of said actuator (6) a torque having a greater moment than said nominal moment.
  3. Escapement mechanism (1) according to claim 2, characterized in that said first stopping means include, arranged to cooperate with said first track (7), on one hand a first surface (61; 62) for exerting a torque with a first moment lower than a second moment of a stopping torque exerted on the other hand by a second surface (610; 620) forming a barrier where there is a magnetic, or respectively electrostatic field, of higher intensity than the magnetic, or respectively electrostatic field present on said first surface (61; 62), and said second surface (610; 620) being arranged to cooperate with at least a first complementary stop surface (10) comprised in said regulating mobile component (5) to constitute therewith an autonomous escapement mechanism.
  4. Escapement mechanism (1) according to any of claims 1 to 3, characterized in that said second stopping means include a mechanical stop member (9) arranged to cooperate, in an end-of-travel stop arrangement, with at least a first complementary stop surface (10) comprised in said regulating mobile component (5), to constitute therewith an autonomous escapement mechanism.
  5. Escapement mechanism (1) according to claims 3 and 4, characterized in that each said actuator (6) comprises in succession, in a single direction of entry into cooperation with said first track (7), a said first surface (61; 62), a said second surface (610; 620), and a said mechanical stop member (9).
  6. Escapement mechanism (1) according to any of the preceding claims, characterized in that said escapement mechanism (1) is a contactless dead beat escapement.
  7. Escapement mechanism (1) according to any of the preceding claims, characterized in that said actuators (6) are identical to each other.
  8. Escapement mechanism (1) according to any of the preceding claims, characterized in that said first track (7) is located on a sector of a body of revolution centred on said second pivot axis (D2) and has an angular amplitude strictly less than 360°.
  9. Escapement mechanism (1) according to any of the preceding claims, characterized in that said first complementary stop surface (10) is carried by a truncated ring gear (50) which is a sector of a body of revolution centred on said second pivot axis (D2), and has an angular amplitude strictly less than 360°, so as to minimise the exchange of energy between said resonator (4) and said escape wheel (3), except close to the position of equilibrium of said resonator.
  10. Escapement mechanism (1) according to any of the preceding claims, characterized in that said first track (7) generates a first magnetic, or respectively electrostatic field, which tends to repel each said first surface (61) of said actuator (6), said first surface (61) is magnetically, or respectively electrically charged in an opposite polarity to that of said first magnetic, or respectively electrostatic field.
  11. Escapement mechanism (1) according to any of claims 1 to 9, characterized in that each said actuator (6) includes a first magnetically, or respectively electrically charged surface (61), arranged to cooperate with said first track (7) which is magnetically, or respectively electrically charged, so as to attract each said first surface (61) of said actuator (6).
  12. Escapement mechanism (1) according to any of the preceding claims, characterized in that said escape wheel (3) also comprises other said actuators (6), each comprising at least a second magnetically, or respectively electrically charged surface (62; 620), arranged to cooperate with a second track (8) of said regulating mobile component (5), said second track (8) is parallel to said first track (7), and perpendicular to said second pivot axis (D2), and is an annular sector centred on said second pivot axis (D2) and with an angular amplitude strictly less than 360°, and generates a second magnetic, or respectively electrostatic field, which tends to repel each said second magnetically, or respectively electrically charged surface (62; 620) with an opposite polarity to that of said second magnetic, or respectively electrostatic field.
  13. Escapement mechanism (1) according to the preceding claim, characterized in that said escape wheel (3) comprises at least an upper disc (31) comprising said first surfaces (61; 610), and a lower disc (32) comprising said second surfaces (62; 620) located perpendicular to and opposite said first surfaces (61; 610), and in that said escape wheel (3) comprises magnetic, or respectively electrostatic field closing means, between said upper disc (31) and said lower disc (32) and in that said first magnetically, or respectively electrically charged track (7) is formed of a series of magnetically, or respectively electrically charged studs, and in that said second magnetically, or respectively electrically charged track (8), is formed of a series of magnetically, or respectively electrically charged studs.
  14. Escapement mechanism (1) according to any of the preceding claims, characterized in that each said mechanical stop member (9) is also arranged to cooperate, in an end-of-travel stop arrangement, with at least a second complementary stop surface (11) comprised in said regulating mobile component (5), and further characterized in that said second complementary stop surface (11) is carried by a surface of revolution centred on said second pivot axis (D2), and has an angular amplitude strictly less than 360°.
  15. Escapement mechanism (1) according to the preceding claim, characterized in that said second complementary stop surface (11) is connected to said first complementary stop surface (10) by at least one joining surface (12), arranged to form an impulse ramp for said resonator (4) when said joining surface (12) is in abutment on a said actuator (6), arranged to provide energy to said resonator close to the position of equilibrium thereof.
  16. Escapement mechanism (1) according to any of the preceding claims, characterized in that said mechanical stop member (9) comprises an impulse ramp arranged to provide energy to said resonator close to the position of equilibrium thereof.
  17. Escapement mechanism (1) according to any of claims 15 or 16, characterized in that said impulse ramp only provides energy to said resonator close to the position of equilibrium thereof if said drive torque imparted to said escape wheel (3) is such that the repulsion, or respectively attraction, between said first track (7) and each said first surface (61) of said actuator (6), is insufficient to prevent contact between said mechanical stop member (9) and said regulating mobile component (5).
  18. Escapement mechanism (1) according to any of the preceding claims, characterized in that each said first magnetically, or respectively electrically charged surface (61) comprises a section that gradually decreases in the radial direction away from said first pivot axis (D1), so that the area of a superposition surface (71) corresponding to the projection of said first surface (61) onto said first track (7) is variable during the relative pivoting of said escape wheel (3) and of said regulating mobile component (5).
  19. Escapement mechanism (1) according to any of the preceding claims, characterized in that said escape wheel (3) gradually provides energy to the system, and in that said regulating mobile component (5) returns all this accumulated energy instantaneously, in the form of an impulse imparted to said resonator (4), said escapement mechanism (1) thus constituting a constant force escapement mechanism.
  20. Escapement mechanism (1) according to claim 14 or 15, characterized in that said escapement mechanism constitutes a cylinder escapement mechanism, wherein said first complementary stop surface (10) is the inner surface of a cylindrical tubular sector, and in that said second complementary stop surface (11) is the outer surface of said cylindrical tubular sector.
  21. Escapement mechanism (1) according to claim 14 or 15, characterized in that said escapement mechanism constitutes a pin wheel escapement mechanism, wherein said escape wheel (3) comprises a half-pin on each said actuator (6), and wherein said first complementary stop surface (10) is the inner surface of a first elbow link member, and in that said second complementary stop surface (11) is the outer surface of a second elbow link member, said inner surface of said first elbow link member and said outer surface of said second elbow link member being separated by a space of width greater than the radius of said half-pin.
  22. Escapement mechanism (1) according to any of the preceding claims, characterized in that said escapement mechanism is devoid of a stop member.
  23. Timepiece movement (100) comprising at least one escapement mechanism (1) according to any of the preceding claims and comprising drive motor means (2) subjecting a said escape wheel (3) to a unidirectional rotational torque about a first pivot axis (D1), characterized in that said drive motor means (2) are arranged to deliver a torque sufficient to allow the complete superposition of each said first surface (61) with said first track (7).
  24. Timepiece movement (100) according to claim 23 and comprising a said escapement mechanism according to claim 22, characterized in that the maximum torque delivered by said drive motor means (2) is limited to a level that is insufficient to allow the complete superposition of each said barrier (610) with said first track (7).
  25. Timepiece including a movement (100) according to claim 23 or 24.
EP14186261.5A 2013-12-23 2014-09-24 Contactless cylinder escapement mechanism Active EP2889704B1 (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
EP14186261.5A EP2889704B1 (en) 2013-12-23 2014-09-24 Contactless cylinder escapement mechanism
CH01444/14A CH709058A2 (en) 2013-12-23 2014-09-24 Exhaust mechanism to watch contactless cylinder.
CH01450/14A CH709061A2 (en) 2013-12-23 2014-09-25 Mechanism of natural exhaust.
EP14186297.9A EP2911015B1 (en) 2013-12-23 2014-09-25 Natural escapement
CN201480070342.9A CN105849650B (en) 2013-12-23 2014-12-08 Contactless cylinder escapement for clock and watch
PCT/EP2014/076930 WO2015096973A2 (en) 2013-12-23 2014-12-08 Escapement mechanism having a contactless timepiece cylinder
RU2016130266A RU2666451C2 (en) 2013-12-23 2014-12-08 No-touch cylindrical trigger mechanism for watches
US15/106,433 US9746829B2 (en) 2013-12-23 2014-12-08 Contactless cylinder escapement mechanism for timepieces
JP2016542197A JP6236164B2 (en) 2013-12-23 2014-12-08 Non-contact cylinder escapement mechanism for timepiece
US15/028,599 US9927773B2 (en) 2013-12-23 2014-12-09 Natural escapement
RU2016130276A RU2660530C2 (en) 2013-12-23 2014-12-09 Natural trigger mechanism
JP2016533632A JP6130603B2 (en) 2013-12-23 2014-12-09 Natural escapement
PCT/EP2014/077039 WO2015096979A2 (en) 2013-12-23 2014-12-09 Natural escapement
CN201480070616.4A CN105849652B (en) 2013-12-23 2014-12-09 Natural style escapement
PCT/EP2014/079036 WO2015097172A2 (en) 2013-12-23 2014-12-22 Device intended to control the angular speed of a train in a timepiece movement and including a magnetic escapement
US15/109,066 US9715217B2 (en) 2013-12-23 2014-12-22 Device intended to control the angular speed of a train in a timepiece movement and including a magnetic escapement
CN201480076123.1A CN106030422B (en) 2013-12-23 2014-12-22 Device for the angular frequency for adjusting the movement parts in the watch and clock movement for including magnetic release catch
EP14821180.8A EP3087435B1 (en) 2013-12-23 2014-12-22 Device intended to control the angular speed of a train in a timepiece movement and including a magnetic escapement

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CH02140/13A CH709019B1 (en) 2013-12-23 2013-12-23 Magnetic or electrostatic exhaust mechanism.
EP13199427.9A EP2887157B1 (en) 2013-12-23 2013-12-23 Optimised escapement
EP14176816 2014-07-11
CH10572014 2014-07-11
CH01365/14A CH709056A2 (en) 2013-12-23 2014-09-09 Mechanism of clock synchronization.
EP14186261.5A EP2889704B1 (en) 2013-12-23 2014-09-24 Contactless cylinder escapement mechanism

Publications (3)

Publication Number Publication Date
EP2889704A2 EP2889704A2 (en) 2015-07-01
EP2889704A3 EP2889704A3 (en) 2016-06-29
EP2889704B1 true EP2889704B1 (en) 2017-11-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14186261.5A Active EP2889704B1 (en) 2013-12-23 2014-09-24 Contactless cylinder escapement mechanism

Country Status (2)

Country Link
EP (1) EP2889704B1 (en)
CH (1) CH709058A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101892823B1 (en) 2015-12-10 2018-10-04 니바록스-파 에스.에이. Contactless cylinder escapement
EP3627242A1 (en) 2018-09-19 2020-03-25 The Swatch Group Research and Development Ltd Optimised magneto-mechanical timepiece escapement mechanism
EP4202563A1 (en) * 2021-12-23 2023-06-28 The Swatch Group Research and Development Ltd Timepiece mechanism provided with a magnetic gear

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3128380B1 (en) 2015-08-04 2018-11-21 ETA SA Manufacture Horlogère Suisse Watch regulator mechanism with magnetically synchronised rotary arms
EP3128379B1 (en) * 2015-08-04 2019-10-02 The Swatch Group Research and Development Ltd. Escapement with escape wheel with field rramps and a non-return device

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US3451280A (en) * 1965-07-29 1969-06-24 Centre Electron Horloger Device for transforming the movement for an electronic watch

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Publication number Priority date Publication date Assignee Title
GB671360A (en) * 1948-07-28 1952-05-07 Smith & Sons Ltd S Magnetic escapements for timepieces
US3183426A (en) * 1962-02-14 1965-05-11 Cons Electronics Ind Magnetically coupled constant speed system

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Publication number Priority date Publication date Assignee Title
US3451280A (en) * 1965-07-29 1969-06-24 Centre Electron Horloger Device for transforming the movement for an electronic watch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101892823B1 (en) 2015-12-10 2018-10-04 니바록스-파 에스.에이. Contactless cylinder escapement
EP3627242A1 (en) 2018-09-19 2020-03-25 The Swatch Group Research and Development Ltd Optimised magneto-mechanical timepiece escapement mechanism
EP4202563A1 (en) * 2021-12-23 2023-06-28 The Swatch Group Research and Development Ltd Timepiece mechanism provided with a magnetic gear

Also Published As

Publication number Publication date
EP2889704A2 (en) 2015-07-01
EP2889704A3 (en) 2016-06-29
CH709058A2 (en) 2015-06-30

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