EP3485332A1 - Escapement mechanism - Google Patents

Escapement mechanism

Info

Publication number
EP3485332A1
EP3485332A1 EP17739529.0A EP17739529A EP3485332A1 EP 3485332 A1 EP3485332 A1 EP 3485332A1 EP 17739529 A EP17739529 A EP 17739529A EP 3485332 A1 EP3485332 A1 EP 3485332A1
Authority
EP
European Patent Office
Prior art keywords
leaf spring
rocker
mechanism according
exhaust
exhaust mechanism
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.)
Granted
Application number
EP17739529.0A
Other languages
German (de)
French (fr)
Other versions
EP3485332B1 (en
Inventor
Stéphane OES
Matthieu Kummer
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.)
Sowind SA
Original Assignee
Sowind SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sowind SA filed Critical Sowind SA
Publication of EP3485332A1 publication Critical patent/EP3485332A1/en
Application granted granted Critical
Publication of EP3485332B1 publication Critical patent/EP3485332B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • G04B15/10—Escapements with constant impulses for the regulating mechanism
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/045—Oscillators acting by spring tension with oscillating blade springs
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • 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

Definitions

  • the present invention relates to the field of mechanical watchmaking. It relates, more particularly, to an escapement mechanism arranged to transmit mechanical energy pulses from a driving source to an oscillating timepiece regulator by means of a leaf spring working in buckling around a inflection point.
  • the leaf spring is able to accumulate energy from the power source between two pulses and transmit it to said oscillating regulator at each pulse via a first and a second latch.
  • Such a mechanism is described in particular in WO 99/64936.
  • the latter discloses, more generally, a method for transmitting pulses of mechanical energy from a power source to an oscillating regulator, by means of a leaf spring working in buckling mode. More particularly, this method is implemented in particular by an escape mechanism illustrated in FIG. 1, intended to maintain the oscillations of a regulator, composed for example by a balance 1 associated with a spiral, by delivering it to the energy received from a driving source, such as a barrel for example, not visible in Figure 1, via a leaf spring 2, whose ends are positioned such that it occupies a stable position corresponding to a second mode buckling .
  • a driving source such as a barrel for example, not visible in Figure 1
  • a leaf spring 2 whose ends are positioned such that it occupies a stable position corresponding to a second mode buckling .
  • the leaf spring 2 is capable, by means of an armature rocker 3 and a trigger rocker 4, of accumulating the energy coming from the driving source during a winding phase, to remain in an armed state during a rest phase and to restore the energy accumulated to said oscillating regulator during a pulse phase.
  • the trigger rocker 4 is kinematically connected to the leaf spring 2 substantially at its central point of inflection.
  • the trigger rocker 4 comprises, at one end, a fork intended to cooperate with a plate 6 and a plate pin 7 that includes the rocker 1.
  • the armature rocker 3 comprises a central portion and two symmetrical wings whose ends are kinematically connected to the leaf spring 2.
  • the central portion comprises a first 8 and a second 9 pallets of rest, intended to cooperate respectively with a first 10 and a second 1 1 escape wheel.
  • the two flip-flops 3 and 4 are mounted free to rotate one with reference to I
  • the wheels 10 and 1 1 each comprise a pinion meshing with the last wheel 12 of the work train so that the wheels 10 and 1 1 pivot in a synchronized manner.
  • the wheels 10 and 1 1 comprise a particular toothing, whose shape is adapted to cooperate with the first 8 and second 9 pallets of rest of the rocker arm 3, on the one hand to transmit energy to this rocker d arming 3 and, secondly, to block the rotation of the escape wheels 10 and 1 1, according to the phases of operation which will be summarized below. For more details, it is possible to refer to the document cited in the introduction.
  • FIG. 1 shows an exhaust mechanism of the prior art immediately after a pulse phase and at the beginning of a winding phase, the rocker 1 rotates counterclockwise, the rocker pin 7 comes out of the fork , the first rest pallet 8 has just disengaged from the wheel 10 and the spring 2 is in a stable position corresponding to a second mode buckling.
  • the first escape wheel 10 rotates freely and the second escape wheel January 1 cooperates with the second pallet of rest 9 of the rocker arming 3 to rotate the latter counterclockwise until a tooth of the second wheel January 1 comes to bear on the second pallet of rest 9.
  • the leaf spring 2 has left its initial steady state corresponding to a second mode buckling and was deformed under the action of the armature rocker 3 to a metastable state close to an unstable state corresponding to a fourth mode buckling.
  • the armature of the leaf spring 2 is then maximal.
  • the escape wheels 10, 1 1 are stopped, a tooth of the second wheel January 1 bearing against the second pallet of rest 9.
  • the rocker 1 continues its oscillation until the ankle 7 hits the fork of the trigger rocker 4 which marks the beginning of the impulse phase.
  • the trigger rocker 4 pivots by acting on the leaf spring 2 which then suddenly switches from its unstable position to a stable state corresponding to a reverse second mode buckling of the previous one.
  • This change of state causes the armature rocker 3 to pivot, causing the release of the second pallet of rest 9 of the second escape wheel 1 1.
  • the armature rocker 3 pivots until the first pallet of rest 8 meets the first escape wheel 10.
  • it also acts on the trigger rocker 4, thus communicating to the balance 1 the energy accumulated during the arming of the leaf spring 2, via the fork.
  • the present invention provides an exhaust mechanism implementing a leaf spring working in buckling and whose characteristics are detailed in the claims.
  • the escapement mechanism of the invention is designed to transmit pulses of mechanical energy from a driving source to an oscillating timepiece regulator via a leaf spring working in buckling around an inflection point, said leaf spring being capable of accumulating energy from the power source between two pulses and to transmit it to said oscillating regulator at each pulse by means of an armature rocker and a detent rocker movable in rotation about an axis and arranged to cooperate with the leaf spring and with at least one escapement mobile receiving energy from the drive source to block its rotation intermittently, and characterized in that the leaf spring is integral at a first end of said axis of rotation of the trigger rocker.
  • the armature rocker advantageously cooperates with the blade spring at its point of inflection, preferably at one end of said armature rocker.
  • the escapement mechanism of the invention thus has the advantage of providing a spring blade of reduced length compared to the mechanisms known from the prior art, the buckling of which is ensured by direct interaction of the armature rocker with the blade. spring directly to its point of inflection. This can greatly reduce the size of the exhaust mechanism while maintaining the special advantages of using a leaf spring. It is also possible to simplify the structure of the mechanism by using a single escape wheel, thus significantly reducing friction and loss of motive power.
  • at least one escape wheel comprises an escape wheel driven on an exhaust pinion, said escape wheel having peripheral teeth.
  • the mechanism of the invention comprises a first mobile exhaust and a second mobile identical exhaust, both arranged to be kinematically connected to at least one motor member of a watch movement by a train.
  • the leaf spring is secured at a second end of a fixed support arm extending along a longitudinal axis XX 'perpendicular to the axis of rotation of the armature and detent latches. .
  • the escapement wheels are advantageously arranged symmetrically with respect to the X-X 'axis and the armature rocker extends in a longitudinal direction A-A' coplanar with the exhaust wheels of the escape mobiles.
  • the armature rocker comprises an actuating arm extending along the axis AA 'and from which two vanes are integral and protruding from said arm symmetrically to said axis AA' so as to engage alternatively with the teeth of the escape wheels.
  • the armature rocker comprises at one free end a finger adapted to cooperate with an eyelet of the leaf spring at its point of inflection.
  • the leaf spring is rotatably mounted at a second end on a lug secured to the support arm.
  • the leaf spring is formed of material with the trigger rocker or any other manner known to those skilled in the art.
  • the leaf spring, the armature and trigger rockers are made of silicon.
  • the armature rocker and its pallets may also be formed of a monolithic piece of silicon, as well as the exhaust wheel or wheels.
  • said latches, pallets and escape wheel could also be formed of any other material usually known for this purpose in the field of watchmaking.
  • the pallets could in particular be made of rubies or diamonds.
  • FIG. 2 and 3 show views in perspective and from above of an exhaust mechanism according to the invention in a preferred embodiment.
  • FIG. 2 shows an escape mechanism 100 arranged for transmitting pulses of mechanical energy from a driving source, for example constituted by one or more barrels, not shown in the figures, to an oscillating part regulator.
  • a driving source for example constituted by one or more barrels, not shown in the figures
  • timepiece, sprung-balance type 200 by means of a leaf spring 300 working in buckling around a point of inflection I.
  • the leaf spring 300 is mounted integral with a first end 301 of a trigger rocker 500 pivotally mounted about a rotation shaft 600, defining a vertical axis A of rotation of the trigger rocker 500.
  • the leaf spring 300 is integral with a mounting pad (not shown) integral with a bridge or the plate of a timepiece or, as shown in Figure 2 formed of material at a first end of a support arm 400 fixed relative to said platen.
  • the leaf spring 300 is made of silicon and the trigger rocker 500 is also made of silicon, preferably formed of material with the leaf spring 300 by deep etching processes well known to those skilled in the art. in the field of microtechnology, including MEMS type devices (for micro-electromechanical Systems in English).
  • the leaf spring 300 is preferably arranged between the pad and the shaft 600 so that it can accumulate energy from the power source between two pulses on the one hand and restore it elastically to the oscillating regulator 200 under the 1st order buckling effect at each pulse by means of the trigger rocker and an armature rocker 700 also pivoted about the shaft 600 defining the axis A.
  • the armature rocker 700 extends along a longitudinal axis A-A ', perpendicular to the vertical axis of rotation A of said armature rocker and the rocker arm.
  • the armature latch 700 is rotatably mounted about the shaft 600 and has an actuating arm extending from said shaft 600 to a free rear end at which a housing is arranged or arranged. connecting finger 701 of the armature rocker 700 to the leaf spring 300 at its point of inflection I, said finger 701 being arranged to extend through an eyelet 303 centered on said point of inflection I is formed of material in the leaf spring 300.
  • the armature latch 700 is also formed of silicon and the finger 701 may be made of ruby or diamond, for example inserted in a hole provided for this purpose at the free end or formed of silicon material with the arm of the armature rocker.
  • the exhaust mechanism 100 further comprises two exhaust mounts 800a, 800b each comprising an escape wheel 801a, 801b driven on an exhaust pinion 802a, 802b, each of the exhaust wheels 801a, 801 b with peripheral teeth 803.
  • the two escape mobiles 800a, 800b are arranged symmetrically on either side of the longitudinal axis XX 'of the support arm 400, the armature rocker 700 extending in the plane of the exhaust wheels 801a, 801b therebetween.
  • the exhaust gears 802a, 802b are arranged to be kinematically connected by a toothed wheel 900 to the finishing gear of the timepiece comprising the exhaust mechanism 100 to receive the motive energy of the energy source. .
  • the arming lever 700 comprises two pallets 702, for example of ruby or diamond, arranged symmetrically with respect to the longitudinal axis AA 'of the armature rocker 700 and protruding on the fields side of the armature rocker so as to cooperate respectively in the alternations of the regulating member 200 with the teeth 803 of the escape wheels 801a, 801b.
  • said pallets 702 can be made of material with the armature rocker 700 in a monolithic piece of silicon and the exhaust wheels also made of silicon, for example by deep etching processes.
  • the trigger rocker 500 is arranged to cooperate with the regulating member 200 independently of the armature rocker 700.
  • the trigger rocker 500 comprises at a free end opposite the rotation shaft 600 an adjusted fork 501 to cooperate, conventionally, with the plate anchor 202 carried on the large plate 201 has a double plate 201 driven on the axis of the balance spring forming the regulating member 200.
  • a dart 502 integral with the trigger rocker 500 and resting on the upper field thereof extends between the horns of the fork 501 so, again in a conventional manner, to cooperate with the notch formed in the periphery of the small plate 201 b of the double plate 201. assembly can advantageously be made monolithically.
  • the armature lever 700 co-operates by its pallets 702 with the teeth 803 of the escape wheels 801a, 801b to alternately block and then release said escapement wheels 800a, 800b in order to transmit via the leaf spring 300 and the trigger rocker 500 the motive power to the organ 200.
  • This driving energy is transmitted in the form of a pull torque applied by the teeth 803 on the pallets 702 of the rocker arm 700.
  • the plate pin 202 enters the range 501 of the trigger rocker 500 and presses on the horns of said fork 501 causing a rotation of the trigger rocker about its axis A.
  • This rotation of the rocker relaxation induces a passage 500 of the blade spring 300 of a first unstable state to a second stable state called buckling of 1st order inducing a displacement of the point of inflection I inducing support the leaf spring 300 on the finger 701, the armature rocker 700, which in turn rotates about the axis A from a first pulling position on one of the exhaust wheels 801a, 801b to a second pulling position on the other wheels of the exhaust 801a, 801b.
  • the armature rocker from its first draw position to the other exhaust mounts 800a, 800b perform a step in rotation under the action of the driving force.
  • the release of the trigger rocker 500 is triggered by an action of the regulator on the fork 501 without intervention of the leaf spring 2 in the transfer of the energy of the release. It is also possible to couple the trigger and latch rockers on the same axis of rotation, which thus enables the escapement and locking functions of the escapement mobiles 28 to be separated from the winding functions of the spring. -Lame 300. We obtain more efficient draw that improves the safety of the functions on the exhaust.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Micromachines (AREA)
  • Springs (AREA)

Abstract

The invention relates to an escapement mechanism (100) which is designed to transmit impulses of mechanical energy from a drive source to an oscillating regulator (200) of a timepiece via a strip spring (300) which acts by buckling about an inflection point (I), said strip spring (300) being able to accumulate the energy emitted by the drive source between two impulses and to transmit this to the oscillating regulator, at each impulse, by means of a winding lever (700) and a detent lever (500) which are able to rotate about an axis (A) and are designed to interact with the strip spring (300) and with at least one escapement wheel (800a) that receives the energy from the drive source, so as to block rotation thereof intermittently. The mechanism is characterised in that one end of the strip spring (300) is positioned on the axis of rotation (A) of the detent lever.

Description

MECANISME D'ECHAPPEMENT  EXHAUST MECHANISM
Domaine technique Technical area
La présente invention se rapporte au domaine de l'horlogerie mécanique. Elle concerne, plus particulièrement un mécanisme d'échappement agencé pour transmettre des impulsions d'énergie mécanique d'une source motrice à un régulateur oscillant de pièce d'horlogerie par l'intermédiaire d'un ressort-lame travaillant en flambage autour d'un point d'inflexion. Le ressort-lame est susceptible d'accumuler l'énergie issue de la source motrice entre deux impulsions et de la transmettre audit régulateur oscillant à chaque impulsion par l'intermédiaire d'une première et d'une deuxième bascule.  The present invention relates to the field of mechanical watchmaking. It relates, more particularly, to an escapement mechanism arranged to transmit mechanical energy pulses from a driving source to an oscillating timepiece regulator by means of a leaf spring working in buckling around a inflection point. The leaf spring is able to accumulate energy from the power source between two pulses and transmit it to said oscillating regulator at each pulse via a first and a second latch.
Etat de la technique State of the art
Un tel mécanisme est notamment décrit dans le document WO 99/64936. Ce dernier divulgue, plus généralement, un procédé pour transmettre des impulsions d' énergie mécanique d'une source motrice à un régulateur oscillant, par l'intermédiaire d'un ressort-lame travaillant en flambage. Plus particulièrement, ce procédé est mis en œuvre notamment par un mécanisme d'échappement illustré sur la figure 1 , destiné à entretenir les oscillations d'un régulateur, composé par exemple par un balancier 1 associé à un spiral, en lui délivrant de l'énergie reçue d'une source motrice, telle qu'un barillet par exemple, non visible sur la figure 1 , via un ressort- lame 2, dont les extrémités sont positionnées tel qu'il occupe une position stable correspondant à un flambage de second mode. Le ressort-lame 2 est susceptible, par l'intermédiaire d'une bascule d'armage 3 et d'une bascule de détente 4, d' accumuler l'énergie issue de la source motrice lors d'une phase d'armage, de demeurer dans un état armé lors d'une phase de repos et de restituer l'énergie accumulée audit régulateur oscillant lors d'une phase d'impulsion.  Such a mechanism is described in particular in WO 99/64936. The latter discloses, more generally, a method for transmitting pulses of mechanical energy from a power source to an oscillating regulator, by means of a leaf spring working in buckling mode. More particularly, this method is implemented in particular by an escape mechanism illustrated in FIG. 1, intended to maintain the oscillations of a regulator, composed for example by a balance 1 associated with a spiral, by delivering it to the energy received from a driving source, such as a barrel for example, not visible in Figure 1, via a leaf spring 2, whose ends are positioned such that it occupies a stable position corresponding to a second mode buckling . The leaf spring 2 is capable, by means of an armature rocker 3 and a trigger rocker 4, of accumulating the energy coming from the driving source during a winding phase, to remain in an armed state during a rest phase and to restore the energy accumulated to said oscillating regulator during a pulse phase.
La bascule de détente 4 est liée cinématiquement à la lame-ressort 2 sensiblement au niveau de son point d'inflexion central. La bascule de détente 4 comporte, à une extrémité, une fourchette destinée à coopérer avec un plateau 6 et une cheville de plateau 7 que comporte le balancier 1. La bascule d'armage 3 comporte une portion centrale et deux ailes symétriques dont les extrémités sont liées cinématiquement au ressort-lame 2. La portion centrale comporte une première 8 et une deuxième 9 palettes de repos, destinées à coopérer respectivement avec une première 10 et une deuxième 1 1 roue d'échappement. The trigger rocker 4 is kinematically connected to the leaf spring 2 substantially at its central point of inflection. The trigger rocker 4 comprises, at one end, a fork intended to cooperate with a plate 6 and a plate pin 7 that includes the rocker 1. The armature rocker 3 comprises a central portion and two symmetrical wings whose ends are kinematically connected to the leaf spring 2. The central portion comprises a first 8 and a second 9 pallets of rest, intended to cooperate respectively with a first 10 and a second 1 1 escape wheel.
Les deux bascules 3 et 4 sont montées libres en rotation l'une en référence à IThe two flip-flops 3 and 4 are mounted free to rotate one with reference to I
'autre. 'other.
Les roues 10 et 1 1 comportent chacune un pignon engrenant avec la dernière roue 12 du rouage de finissage de sorte que les roues 10 et 1 1 pivotent de façon synchronisée. Les roues 10 et 1 1 comportent une denture particulière, dont la forme est adaptée pour coopérer avec les première 8 et deuxième 9 palettes de repos de la bascule d'armage 3, d'une part pour transmettre de l'énergie à cette bascule d'armage 3 et, d'autre part, pour bloquer la rotation des roues d'échappement 10 et 1 1 , selon les phases du fonctionnement qui vont être résumées ci-après. Pour plus de détails, il est possible de se référer au document cité dans l'introduction. The wheels 10 and 1 1 each comprise a pinion meshing with the last wheel 12 of the work train so that the wheels 10 and 1 1 pivot in a synchronized manner. The wheels 10 and 1 1 comprise a particular toothing, whose shape is adapted to cooperate with the first 8 and second 9 pallets of rest of the rocker arm 3, on the one hand to transmit energy to this rocker d arming 3 and, secondly, to block the rotation of the escape wheels 10 and 1 1, according to the phases of operation which will be summarized below. For more details, it is possible to refer to the document cited in the introduction.
La figure 1 représente un mécanisme d'échappement de l'art antérieur immédiatement après une phase d'impulsion et au début d'une phase d'armage, le balancier 1 tourne dans le sens antihoraire, la cheville de plateau 7 sort de la fourchette, la première palette de repos 8 vient de se dégager de la roue 10 et le ressort 2 est dans une position stable correspondant à un flambage de second mode. Lors de la phase d'armage, pendant que le balancier 1 effectue son arc supplémentaire, la première roue d'échappement 10 tourne librement et la deuxième roue d'échappement 1 1 coopère avec la deuxième palette de repos 9 de la bascule d'armage 3 pour faire pivoter celle-ci dans le sens antihoraire jusqu'à ce qu'une dent de la deuxième roue 1 1 vienne en appui sur la deuxième palette de repos 9. Concomitamment, le ressort-lame 2 a quitté son état stable initial correspondant à un flambage de second mode et s'est déformé sous l'action de la bascule d'armage 3 jusqu'à un état métastable proche d'un état instable correspondant à un flambage de quatrième mode. L'armage du ressort-lame 2 est alors maximal. Lors de la phase de repos suivante, les roues d'échappement 10, 1 1 sont à Γ arrêt, une dent de la deuxième roue 1 1 étant en appui contre la deuxième palette de repos 9. Le balancier 1 poursuit son oscillation jusqu'à ce que la cheville 7 percute la fourchette de la bascule de détente 4 ce qui marque le début de la phase d' impulsion. FIG. 1 shows an exhaust mechanism of the prior art immediately after a pulse phase and at the beginning of a winding phase, the rocker 1 rotates counterclockwise, the rocker pin 7 comes out of the fork , the first rest pallet 8 has just disengaged from the wheel 10 and the spring 2 is in a stable position corresponding to a second mode buckling. During the arming phase, while the rocker 1 performs its additional arc, the first escape wheel 10 rotates freely and the second escape wheel January 1 cooperates with the second pallet of rest 9 of the rocker arming 3 to rotate the latter counterclockwise until a tooth of the second wheel January 1 comes to bear on the second pallet of rest 9. Concomitantly, the leaf spring 2 has left its initial steady state corresponding to a second mode buckling and was deformed under the action of the armature rocker 3 to a metastable state close to an unstable state corresponding to a fourth mode buckling. The armature of the leaf spring 2 is then maximal. During the following rest phase, the escape wheels 10, 1 1 are stopped, a tooth of the second wheel January 1 bearing against the second pallet of rest 9. The rocker 1 continues its oscillation until the ankle 7 hits the fork of the trigger rocker 4 which marks the beginning of the impulse phase.
Durant la phase d'impulsion, la bascule de détente 4 pivote en agissant sur le ressort-lame 2 qui bascule alors subitement de sa position instable à un état stable correspondant à un flambage de second mode inverse du précédent. Ce changement d'état fait pivoter la bascule d'armage 3, entraînant le dégagement de la deuxième palette de repos 9 de la deuxième roue d'échappement 1 1. La bascule d'armage 3 pivote jusqu'à ce que la première palette de repos 8 rencontre la première roue d'échappement 10. Lors du changement d'état du ressort-lame 2, celui-ci agit également sur la bascule de détente 4, communiquant ainsi au balancier 1 l'énergie accumulée lors de l'armage du ressort-lame 2, par l'intermédiaire de la fourchette. During the pulse phase, the trigger rocker 4 pivots by acting on the leaf spring 2 which then suddenly switches from its unstable position to a stable state corresponding to a reverse second mode buckling of the previous one. This change of state causes the armature rocker 3 to pivot, causing the release of the second pallet of rest 9 of the second escape wheel 1 1. The armature rocker 3 pivots until the first pallet of rest 8 meets the first escape wheel 10. When changing the state of the leaf spring 2, it also acts on the trigger rocker 4, thus communicating to the balance 1 the energy accumulated during the arming of the leaf spring 2, via the fork.
Au cours de l'alternance suivante, les phases décrites ci-dessus se reproduisent symétriquement par rapport au plan passant par les axes de rotation du balancier 1 , des bascules de détente 4 et d'armage 3 et par le point d'inflexion du ressort-lame 2. Un tel mécanisme d'échappement permet notamment d'entretenir les oscillations du balancier de manière constante sur toute la durée de la réserve de marche indépendamment des variations de couple de la source d'énergie. During the next alternation, the phases described above reproduce symmetrically with respect to the plane passing through the axes of rotation of the balance 1, the trigger rockers 4 and armature 3 and the point of inflection of the spring 2. Such an escape mechanism makes it possible, in particular, to maintain oscillations of the pendulum in a constant manner over the entire duration of the power reserve, independently of the torque variations of the energy source.
Toutefois, ce mécanisme présente un encombrement très important lié à la disposition de la lame ressort, de la bascule d'armage et des mobiles d'échappement relativement à l'organe régulateur. Il requiert en outre le réglage délicat de deux organes moteurs symétriques et simultanés ce qui s'avère extrêmement délicat. Enfin, une grande partie de l'énergie motrice disponible desdits organes moteurs est malheureusement gaspillée du fait des nombreux frottements engendrés par la construction propre du mécanisme, ce qui affecte négativement la marche du mouvement auquel le mécanisme est intégré. La présente invention a pour but de remédier au moins partiellement à ces inconvénients. However, this mechanism has a very large footprint related to the disposition of the spring blade, the armature rocker and exhaust movers relative to the regulating member. It also requires the delicate adjustment of two symmetrical and simultaneous drive members which is extremely delicate. Finally, a large part of the motive power available from said drive members is unfortunately wasted because of the many friction generated by the mechanism's own construction, which negatively affects the movement of the motion at which the mechanism is integrated. The present invention aims to remedy at least partially these disadvantages.
Divulgation de l'invention Disclosure of the invention
A cet effet la présente invention propose un mécanisme d'échappement mettant en œuvre un ressort lame travaillant en flambement et dont les caractéristiques sont détaillées dans les revendications.  For this purpose the present invention provides an exhaust mechanism implementing a leaf spring working in buckling and whose characteristics are detailed in the claims.
Plus particulièrement, le mécanisme d'échappement de l'invention est agencé pour transmettre des impulsions d'énergie mécanique d'une source motrice à un régulateur oscillant de pièce d'horlogerie par l'intermédiaire d'un ressort-lame travaillant en flambage autour d'un point d'inflexion, ledit ressort-lame étant susceptible d'accumuler l'énergie issue de la source motrice entre deux impulsions et de la transmettre audit régulateur oscillant à chaque impulsion par l'intermédiaire d'une bascule d'armage et d'une bascule de détente mobiles en rotation autour d'un axe et agencées pour coopérer avec le ressort-lame et avec au moins un mobile d'échappement recevant l'énergie de la source motrice pour bloquer sa rotation de manière intermittente, et caractérisé en ce que le ressort-lame est solidaire en une première extrémité dudit axe de rotation de la bascule de détente. De plus, la bascule d'armage coopère avantageusement avec la lame ressort en son point d'inflexion, de préférence au niveau d'une extrémité de ladite bascule d'armage. More particularly, the escapement mechanism of the invention is designed to transmit pulses of mechanical energy from a driving source to an oscillating timepiece regulator via a leaf spring working in buckling around an inflection point, said leaf spring being capable of accumulating energy from the power source between two pulses and to transmit it to said oscillating regulator at each pulse by means of an armature rocker and a detent rocker movable in rotation about an axis and arranged to cooperate with the leaf spring and with at least one escapement mobile receiving energy from the drive source to block its rotation intermittently, and characterized in that the leaf spring is integral at a first end of said axis of rotation of the trigger rocker. In addition, the armature rocker advantageously cooperates with the blade spring at its point of inflection, preferably at one end of said armature rocker.
Le mécanisme d'échappement de l'invention présente ainsi l'avantage de procurer une lame-ressort de longueur réduite comparé aux mécanismes connus de l'art antérieur, dont le flambement est assuré par interaction directe de la bascule d'armage avec la lame ressort directement en son point d'inflexion. On peut ainsi réduire grandement l'encombrement du mécanisme d'échappement tout en maintenant les avantages particuliers de l'utilisation d'une lame-ressort. On peut en outre également simplifier la structure du mécanisme par utilisation d'un unique mobile d'échappement, diminuant ainsi de manière significative les frottements et la perte d'énergie motrice. Dans une forme de réalisation préférée de ce mécanisme d'échappement, au moins un mobile d'échappement comprend une roue d'échappement chassée sur un pignon d'échappement, ladite roue d'échappement comportant des dents périphériques. De préférence encore, le mécanisme de l'invention comporte un premier mobile d'échappement et un second mobile d'échappement identiques, tous deux agencés pour être reliés cinématiquement à au moins un organe moteur d'un mouvement horloger par un rouage. The escapement mechanism of the invention thus has the advantage of providing a spring blade of reduced length compared to the mechanisms known from the prior art, the buckling of which is ensured by direct interaction of the armature rocker with the blade. spring directly to its point of inflection. This can greatly reduce the size of the exhaust mechanism while maintaining the special advantages of using a leaf spring. It is also possible to simplify the structure of the mechanism by using a single escape wheel, thus significantly reducing friction and loss of motive power. In a preferred embodiment of this exhaust mechanism, at least one escape wheel comprises an escape wheel driven on an exhaust pinion, said escape wheel having peripheral teeth. More preferably, the mechanism of the invention comprises a first mobile exhaust and a second mobile identical exhaust, both arranged to be kinematically connected to at least one motor member of a watch movement by a train.
Dans une forme de réalisation de l'invention, le ressort-lame est solidaire en une seconde extrémité d'un bras support fixe s'étendant suivant un axe longitudinal X-X' perpendiculaire à l'axe de rotation des bascules d'armage et de détente. In one embodiment of the invention, the leaf spring is secured at a second end of a fixed support arm extending along a longitudinal axis XX 'perpendicular to the axis of rotation of the armature and detent latches. .
Dans ce mode de réalisation, les roues d'échappements sont avantageusement disposées symétriquement par rapport à l'axe X-X' et la bascule d'armage s'étend suivant une direction longitudinale A-A' coplanaire aux roues d'échappement des mobiles d'échappement. In this embodiment, the escapement wheels are advantageously arranged symmetrically with respect to the X-X 'axis and the armature rocker extends in a longitudinal direction A-A' coplanar with the exhaust wheels of the escape mobiles.
Avantageusement toujours dans cette forme de réalisation préférée, la bascule d'armage comporte un bras d'actionnement s'étendant suivant l'axe A-A' et duquel deux palettes sont solidaires et saillantes dudit bras symétriquement audit axe A-A' de manière à engager alternativement avec les dents des roues d'échappement. Advantageously still in this preferred embodiment, the armature rocker comprises an actuating arm extending along the axis AA 'and from which two vanes are integral and protruding from said arm symmetrically to said axis AA' so as to engage alternatively with the teeth of the escape wheels.
Selon une forme de réalisation préférée, la bascule d'armage comporte en une extrémité libre un doigt adapté pour coopérer avec un œillet du ressort-lame en son point d'inflexion. According to a preferred embodiment, the armature rocker comprises at one free end a finger adapted to cooperate with an eyelet of the leaf spring at its point of inflection.
De façon préférée encore, le ressort-lame est monté libre en rotation en une seconde extrémité sur un ergot solidaire du bras support. More preferably, the leaf spring is rotatably mounted at a second end on a lug secured to the support arm.
Dans une forme de réalisation avantageuse, le ressort-lame est formé de matière avec la bascule de détente ou toute autre manière connue de l'homme du métier. Avantageusement, le ressort-lame, les bascules d'armage et de détente sont constituées de silicium. La bascule d'armage et ses palettes peuvent également être formés d'une pièce monolithique de silicium, de même que la ou les roues d'échappement. Bien entendu, lesdites bascules, palettes et roue d'échappement pourraient également être formées de toute autre matériau usuellement connus à cette fin dans le domaine de l'horlogerie. Les palettes pourraient notamment être constituées de rubis ou de diamant. In an advantageous embodiment, the leaf spring is formed of material with the trigger rocker or any other manner known to those skilled in the art. Advantageously, the leaf spring, the armature and trigger rockers are made of silicon. The armature rocker and its pallets may also be formed of a monolithic piece of silicon, as well as the exhaust wheel or wheels. Of course, said latches, pallets and escape wheel could also be formed of any other material usually known for this purpose in the field of watchmaking. The pallets could in particular be made of rubies or diamonds.
Brève description des dessins Brief description of the drawings
D'autres caractéristiques de la présente invention apparaîtront plus clairement à la lecture de la description qui va suivre, faite en référence au dessin annexé, dans lequel, outre la figure 1 décrite ci-dessus en référence à l'état de la technique :  Other features of the present invention will emerge more clearly on reading the description which follows, made with reference to the appended drawing, in which, in addition to FIG. 1 described above with reference to the state of the art:
- les figures 2 et 3 représentent des vues en perspective et de dessus d'un mécanisme d'échappement selon l'invention dans un mode préféré de réalisation. - Figures 2 and 3 show views in perspective and from above of an exhaust mechanism according to the invention in a preferred embodiment.
Mode(s) de réalisation de l'invention Mode (s) of realization of the invention
On a représenté sur la figure 2 un mécanisme d'échappement 100 agencé pour transmettre des impulsions d'énergie mécanique d'une source motrice, par exemple constituée d'un ou plusieurs barillets, non représentée sur les figures, à un régulateur oscillant de pièce d'horlogerie, de type balancier-spiral 200, par l'intermédiaire d'un ressort-lame 300 travaillant en flambement autour d'un point d'inflexion I.  FIG. 2 shows an escape mechanism 100 arranged for transmitting pulses of mechanical energy from a driving source, for example constituted by one or more barrels, not shown in the figures, to an oscillating part regulator. timepiece, sprung-balance type 200, by means of a leaf spring 300 working in buckling around a point of inflection I.
Le ressort-lame 300 est monté solidaire en une première extrémité 301 d'une bascule de détente 500 montée pivotante autour d'un arbre 600 de rotation, définissant un axe vertical A de rotation de la bascule de détente 500. En une seconde extrémité 302 le ressort lame 300 est solidaire d'un plot de montage (non représenté) solidaire d'un pont ou de la platine d'une pièce d'horlogerie ou encore, comme représenté sur la figure 2 formé de matière à une première extrémité d'un bras support 400 fixe par rapport à ladite platine. Avantageusement, le ressort-lame 300 est constitué de silicium et la bascule de détente 500 est également constituée de silicium, de préférence formée de matière avec le ressort-lame 300 par des procédés de gravure profonde bien connus de l'homme de l'art dans le domaine de la microtechnique, notamment des dispositifs de type MEMS (pour micro-electromechanical Systems en anglais). The leaf spring 300 is mounted integral with a first end 301 of a trigger rocker 500 pivotally mounted about a rotation shaft 600, defining a vertical axis A of rotation of the trigger rocker 500. At a second end 302 the leaf spring 300 is integral with a mounting pad (not shown) integral with a bridge or the plate of a timepiece or, as shown in Figure 2 formed of material at a first end of a support arm 400 fixed relative to said platen. Advantageously, the leaf spring 300 is made of silicon and the trigger rocker 500 is also made of silicon, preferably formed of material with the leaf spring 300 by deep etching processes well known to those skilled in the art. in the field of microtechnology, including MEMS type devices (for micro-electromechanical Systems in English).
Le ressort-lame 300 est de préférence agencé entre le plot et l'arbre 600 de telle sorte qu'il puisse accumuler de l'énergie issue de la source motrice entre deux impulsions d'une part et la restituer élastiquement au régulateur oscillant 200 sous l'effet de flambement de 1 er ordre à chaque impulsion par l'intermédiaire de la bascule de détente et d'une bascule d'armage 700 montée pivotante elle aussi autour de l'arbre 600 définissant l'axe A. The leaf spring 300 is preferably arranged between the pad and the shaft 600 so that it can accumulate energy from the power source between two pulses on the one hand and restore it elastically to the oscillating regulator 200 under the 1st order buckling effect at each pulse by means of the trigger rocker and an armature rocker 700 also pivoted about the shaft 600 defining the axis A.
Dans l'exemple de réalisation préféré représenté sur les figures, la bascule d'armage 700 s'étend suivant un axe longitudinal A-A', perpendiculairement à l'axe vertical de rotation A de ladite bascule d'armage et de la bascule de détente 500. La bascule d'armage 700 est montée libre en rotation autour de l'arbre 600 et comporte un bras d'actionnement s'étendant depuis ledit arbre 600 jusqu'à une extrémité postérieure libre au niveau de laquelle est formé ou agencé un doigt 701 de liaison de la bascule d'armage 700 au ressort-lame 300 en son point d'inflexion I, ledit doigt 701 étant agencé pour s'étendre au travers d'un œillet 303 centré sur ledit point d'inflexion I est formé de matière dans le ressort-lame 300. In the preferred embodiment shown in the figures, the armature rocker 700 extends along a longitudinal axis A-A ', perpendicular to the vertical axis of rotation A of said armature rocker and the rocker arm. The armature latch 700 is rotatably mounted about the shaft 600 and has an actuating arm extending from said shaft 600 to a free rear end at which a housing is arranged or arranged. connecting finger 701 of the armature rocker 700 to the leaf spring 300 at its point of inflection I, said finger 701 being arranged to extend through an eyelet 303 centered on said point of inflection I is formed of material in the leaf spring 300.
De préférence, la bascule d'armage 700 est formée elle aussi de silicium et le doigt 701 peut être constitué de rubis ou de diamant par exemple inséré dans un orifice prévu à cet effet à l'extrémité libre ou encore formé de matière en silicium avec le bras de la bascule d'armage. Preferably, the armature latch 700 is also formed of silicon and the finger 701 may be made of ruby or diamond, for example inserted in a hole provided for this purpose at the free end or formed of silicon material with the arm of the armature rocker.
Le mécanisme d'échappement 100 comporte en outre deux mobiles d'échappement 800a, 800b comprenant chacun une roue d'échappement 801 a, 801 b chassée sur un pignon d'échappement 802a, 802b, chacune des roues d'échappement 801 a, 801 b comportant des dents périphériques 803. De préférence, les deux mobiles d'échappement 800a, 800b sont disposés symétriquement par de part et d'autre de l'axe longitudinal X-X' du bras support 400, la bascule d'armage 700 s'étendant dans le plan des roues d'échappement 801 a, 801 b entre celles-ci. Les pignons d'échappement 802a, 802b sont agencés pour être en liaison cinématique par une roue dentée 900 avec le rouage de finissage de la pièce d'horlogerie comprenant le mécanisme d'échappement 100 pour recevoir l'énergie motrice de la source d'énergie. The exhaust mechanism 100 further comprises two exhaust mounts 800a, 800b each comprising an escape wheel 801a, 801b driven on an exhaust pinion 802a, 802b, each of the exhaust wheels 801a, 801 b with peripheral teeth 803. Preferably, the two escape mobiles 800a, 800b are arranged symmetrically on either side of the longitudinal axis XX 'of the support arm 400, the armature rocker 700 extending in the plane of the exhaust wheels 801a, 801b therebetween. The exhaust gears 802a, 802b are arranged to be kinematically connected by a toothed wheel 900 to the finishing gear of the timepiece comprising the exhaust mechanism 100 to receive the motive energy of the energy source. .
Avantageusement, la bascule d'armage 700 comporte deux palettes 702, par exemple en rubis ou diamant, agencées symétriquement l'une de l'autre par rapport à l'axe longitudinal A-A' de la bascule d'armage 700 et saillante sur les champs latéraux de la bascule d'armage de manière à coopérer respectivement lors des alternances de l'organe régulateur 200 avec les dents 803 des roues d'échappement 801a, 801 b. Advantageously, the arming lever 700 comprises two pallets 702, for example of ruby or diamond, arranged symmetrically with respect to the longitudinal axis AA 'of the armature rocker 700 and protruding on the fields side of the armature rocker so as to cooperate respectively in the alternations of the regulating member 200 with the teeth 803 of the escape wheels 801a, 801b.
Afin de réduire au maximum les frottements entre les palettes 702 de la bascule d'armage 700 et les roues d'échappement 801a, 801 b, lesdites palettes 702 peuvent être réalisées de matière avec la bascule d'armage 700 en une pièce monolithique de silicium et les roues d'échappement elles aussi réalisées en silicium, par exemple par des procédés de gravure profonde. In order to minimize the friction between the pallets 702 of the armature rocker 700 and the escape wheels 801a, 801b, said pallets 702 can be made of material with the armature rocker 700 in a monolithic piece of silicon and the exhaust wheels also made of silicon, for example by deep etching processes.
La bascule de détente 500 est agencée pour coopérer avec l'organe régulateur 200 indépendamment de la bascule d'armage 700. A cet effet, la bascule de détente 500 comporte en une extrémité libre opposée à l'arbre de rotation 600 une fourchette 501 ajustée pour coopérer, de façon classique, avec la cheville 202 de plateau portée sur le grand plateau 201 a d'un double plateau 201 chassé sur l'axe du balancier spiral formant l'organe régulateur 200. Un dard 502 solidaire de la bascule de détente 500 et reposant sur le champ supérieur de celle-ci s'étend entre les cornes de la fourchette 501 afin, là encore de façon classique, de coopérer avec l'encoche formée dans la périphérie du petit plateau 201 b du double plateau 201. Cet assemblage peut avantageusement être réalisé de façon monolithique. The trigger rocker 500 is arranged to cooperate with the regulating member 200 independently of the armature rocker 700. For this purpose, the trigger rocker 500 comprises at a free end opposite the rotation shaft 600 an adjusted fork 501 to cooperate, conventionally, with the plate anchor 202 carried on the large plate 201 has a double plate 201 driven on the axis of the balance spring forming the regulating member 200. A dart 502 integral with the trigger rocker 500 and resting on the upper field thereof extends between the horns of the fork 501 so, again in a conventional manner, to cooperate with the notch formed in the periphery of the small plate 201 b of the double plate 201. assembly can advantageously be made monolithically.
En fonctionnement, la bascule d'armage 700 coopère par ses palettes 702 avec les dents 803 des roues d'échappement 801 a, 801 b pour alternativement bloquer puis libérer lesdits mobiles d'échappement 800a, 800b afin de transmettre via le ressort lame 300 et la bascule de détente 500 l'énergie motrice à l'organe régulateur 200. Cette énergie motrice est transmise sous la forme d'un couple de tirage appliqué par les dents 803 sur les palettes 702 de la bascule d'armage 700. In operation, the armature lever 700 co-operates by its pallets 702 with the teeth 803 of the escape wheels 801a, 801b to alternately block and then release said escapement wheels 800a, 800b in order to transmit via the leaf spring 300 and the trigger rocker 500 the motive power to the organ 200. This driving energy is transmitted in the form of a pull torque applied by the teeth 803 on the pallets 702 of the rocker arm 700.
A chaque alternance du régulateur 200 la cheville de plateau 202 rentre dans la fourchette 501 de la bascule de détente 500 et appuie sur les cornes de ladite fourchette 501 entraînant une rotation de la bascule de détente autour de son axe A. Cette rotation de la bascule de détente 500 induit un passage du ressort-lame 300 d'un premier état instable vers un second état stable appelé flambement de 1er ordre induisant un déplacement du point d'inflexion I induisant l'appui du ressort lame 300 sur le doigt 701 de la bascule d'armage 700, qui pivote à son tour autour de l'axe A depuis une première position de tirage sur une des roues d'échappement 801 a, 801 b vers une seconde position de tirage sur l'autre des roues d'échappement 801 a, 801 b. Lors du passage de la bascule d'armage de sa première position de tirage à l'autre les mobiles d'échappement 800a, 800b effectuent un pas en rotation sous l'action de la force motrice. At each alternation of the regulator 200 the plate pin 202 enters the range 501 of the trigger rocker 500 and presses on the horns of said fork 501 causing a rotation of the trigger rocker about its axis A. This rotation of the rocker relaxation induces a passage 500 of the blade spring 300 of a first unstable state to a second stable state called buckling of 1st order inducing a displacement of the point of inflection I inducing support the leaf spring 300 on the finger 701, the armature rocker 700, which in turn rotates about the axis A from a first pulling position on one of the exhaust wheels 801a, 801b to a second pulling position on the other wheels of the exhaust 801a, 801b. During the passage of the armature rocker from its first draw position to the other exhaust mounts 800a, 800b perform a step in rotation under the action of the driving force.
Ainsi, grâce à cette disposition, le dégagement de la bascule de détente 500 est déclenché par une action du régulateur sur la fourchette 501 sans intervention du ressort-lame 2 dans le transfert de l'énergie du dégagement. On peut également accoupler les bascules de détente et de verrouillage sur un même axe de rotation, ce qui permet ainsi une dissociation des fonctions de détente et de verrouillage des mobiles d'échappement 28 d'une part, et des fonctions d'armage du ressort-lame 300. On obtient de plus un tirage efficace qui améliore les sécurités des fonctions sur l'échappement. Thus, thanks to this arrangement, the release of the trigger rocker 500 is triggered by an action of the regulator on the fork 501 without intervention of the leaf spring 2 in the transfer of the energy of the release. It is also possible to couple the trigger and latch rockers on the same axis of rotation, which thus enables the escapement and locking functions of the escapement mobiles 28 to be separated from the winding functions of the spring. -Lame 300. We obtain more efficient draw that improves the safety of the functions on the exhaust.

Claims

Revendications claims
Mécanisme d'échappement (100) agencé pour transmettre des impulsions d'énergie mécanique d'une source motrice à un régulateur oscillant (200) de pièce d'horlogerie par l'intermédiaire d'un ressort-lame (300) travaillant en flambage autour d'un point d'inflexion (I), ledit ressort-lame (300) étant susceptible d'accumuler l'énergie issue de la source motrice entre deux impulsions et de la transmettre audit régulateur oscillant à chaque impulsion par l'intermédiaire d'une bascule d'armage (700) et d'une bascule de détente (500) mobiles en rotation autour d'un axe (A) et agencées pour coopérer avec le ressort-lame (300) et avec au moins un mobile d'échappement (800a) recevant l'énergie de la source motrice pour bloquer sa rotation de manière intermittente, caractérisé en ce que une extrémité dudit ressort-lame (300) est située sur ledit axe de rotation (A) de la bascule de détente. Exhaust mechanism (100) arranged to transmit pulses of mechanical energy from a power source to an oscillating timepiece controller (200) via a leaf spring (300) working in buckling around an inflection point (I), said leaf spring (300) being capable of accumulating energy from the power source between two pulses and to transmit it to said oscillating regulator at each pulse via an armature rocker (700) and an expansion rocker (500) movable in rotation about an axis (A) and arranged to cooperate with the leaf spring (300) and with at least one escape wheel (800a) receiving power from the drive source to intermittently block its rotation, characterized in that an end of said leaf spring (300) is located on said axis of rotation (A) of the trigger rocker.
Mécanisme d'échappement selon la revendication 1 , caractérisé en ce que la bascule d'armage (700) coopère en une extrémité avec le ressort lame (300) en son point d'inflexion. Exhaust mechanism according to claim 1, characterized in that the armature rocker (700) cooperates at one end with the leaf spring (300) at its point of inflection.
Mécanisme d'échappement selon la revendication 1 ou 2, caractérisé en ce que le au moins un mobile d'échappement (800a) comprend une roue d'échappement (801 a) chassée sur un pignon d'échappement (802a), ladite roue d'échappement comportant des dents périphériques (803). Exhaust mechanism according to claim 1 or 2, characterized in that the at least one escape wheel (800a) comprises an escape wheel (801 a) driven on an exhaust pinion (802a), said wheel exhaust having peripheral teeth (803).
Mécanisme d'échappement selon l'une des revendications 1 à 3, caractérisé en ce qu'il comporte un premier mobile d'échappement (800a) et un second mobile d'échappement (800b) identiques. Exhaust mechanism according to one of claims 1 to 3, characterized in that it comprises a first exhaust mobile (800a) and a second exhaust mobile (800b) identical.
Mécanisme d'échappement selon l'une des revendications 1 à 4, caractérisé en ce que le ressort-lame (300) est solidaire en une seconde extrémité d'un bras support fixe (400) s'étendant suivant un axe longitudinal (Χ-Χ') perpendiculaire à l'axe (A) de rotation des bascules d'armage et de détente. Mécanisme d'échappement selon les revendications 4 et 5, caractérisé en ce que les roues d'échappements (800a, 800b) sont disposées symétriquement par rapport à l'axe (Χ-Χ') et la bascule d'armage (700) s'étend suivant une direction longitudinale (Α-Α') coplanaire aux roues d'échappement (801 a, 801 b) desdits mobiles d'échappement. Exhaust mechanism according to one of claims 1 to 4, characterized in that the leaf spring (300) is secured at a second end of a fixed support arm (400) extending along a longitudinal axis (Χ- Χ ') perpendicular to the axis (A) of rotation of the armature and trigger rockers. Exhaust mechanism according to claims 4 and 5, characterized in that the escape wheels (800a, 800b) are arranged symmetrically with respect to the axis (Χ-Χ ') and the armature rocker (700) s extends along a longitudinal direction (Α-Α ') coplanar with the escape wheels (801 a, 801 b) of said escape wheels.
7. Mécanisme d'échappement selon la revendication 6, caractérisé en ce que la bascule d'armage (700) comporte deux palettes (702) saillantes de la bascule d'armage symétriquement audit axe (Α-Α') de manière à engager alternativement en fonctionnement avec les dents (803) des roues d'échappement (801a, 801 b). 7. Exhaust mechanism according to claim 6, characterized in that the armature rocker (700) comprises two vanes (702) projecting from the armature rocker symmetrically to said axis (Α-Α ') so as to engage alternately in operation with the teeth (803) of the escape wheels (801a, 801b).
8. Mécanisme d'échappement selon l'une des revendications précédentes, caractérisé en ce que la bascule d'armage (700) comporte en une extrémité libre un doigt (701 ) adapté pour coopérer avec un œillet du ressort lame (300) en son point d'inflexion. 8. Exhaust mechanism according to one of the preceding claims, characterized in that the flip-flop (700) comprises at one free end a finger (701) adapted to cooperate with an eyelet of the leaf spring (300) in its inflection point.
9. Mécanisme d'échappement selon l'une des revendications 5 à 8, caractérisé en ce que le ressort-lame (300) est monté libre en rotation en une seconde extrémité sur un ergot solidaire du bras support (400). 9. Exhaust mechanism according to one of claims 5 to 8, characterized in that the leaf spring (300) is rotatably mounted at a second end on a lug integral with the support arm (400).
10. Mécanisme d'échappement selon l'une des revendications 1 à 9, caractérisé en ce que le ressort-lame (300) est formé de matière avec la bascule de détente (500). 1 1. Mécanisme d'échappement selon l'une des revendications 1 à 10, caractérisé en ce que le ressort-lame (300), les bascules d'armage (700) et de détente (500) sont constituées de silicium. 10. Exhaust mechanism according to one of claims 1 to 9, characterized in that the leaf spring (300) is formed of material with the trigger rocker (500). 1 1. Exhaust mechanism according to one of claims 1 to 10, characterized in that the leaf spring (300), the flip-flops (700) and trigger (500) are made of silicon.
12. Mécanisme d'échappement selon les revendications 6 et 1 1 , caractérisé en ce que la bascule d'armage (700) et les palettes (703) sont formées d'une pièce monolithique de silicium. 12. Exhaust mechanism according to claims 6 and 1 1, characterized in that the armature rocker (700) and the pallets (703) are formed of a monolithic piece of silicon.
13. Mécanisme d'échappement selon l'une des revendications 3 à 12, caractérisé en ce que la ou les roues d'échappement (801a, 801 b) sont constituées de silicium. 13. Exhaust mechanism according to one of claims 3 to 12, characterized in that the exhaust wheel or wheels (801a, 801b) consist of silicon.
EP17739529.0A 2016-07-18 2017-07-04 Escapement mechanism Active EP3485332B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00918/16A CH712715B1 (en) 2016-07-18 2016-07-18 Exhaust mechanism using a leaf spring working in buckling.
PCT/EP2017/066687 WO2018015145A1 (en) 2016-07-18 2017-07-04 Escapement mechanism

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Publication Number Publication Date
EP3485332A1 true EP3485332A1 (en) 2019-05-22
EP3485332B1 EP3485332B1 (en) 2022-01-12

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EP17739529.0A Active EP3485332B1 (en) 2016-07-18 2017-07-04 Escapement mechanism

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EP (1) EP3485332B1 (en)
JP (1) JP2019521346A (en)
CN (1) CN109478036B (en)
CH (1) CH712715B1 (en)
WO (1) WO2018015145A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1084459A1 (en) 1998-06-08 2001-03-21 Manufacture des Montres Rolex S.A. Method for transmitting bursts of mechanical energy from a power source to an oscillating regulator
CH700815B1 (en) * 2007-04-18 2010-10-29 Eta Sa Mft Horlogere Suisse Detent escapement for use in timepiece, has lock wheel that is articulated on pivot, where lock wheel includes re-engagement unit for re-engagement of pallet locks respectively in escapement wheels
CH705276B1 (en) * 2007-12-28 2013-01-31 Chopard Technologies Sa Body workout and transmission to a lever escapement, and exhaust tray being equipped and timepiece comprising them.
EP2105806B1 (en) * 2008-03-27 2013-11-13 Sowind S.A. Escapement mechanism
JP5729666B2 (en) * 2010-09-14 2015-06-03 セイコーインスツル株式会社 Watch detent escapement and mechanical watch
JP5485859B2 (en) * 2010-11-17 2014-05-07 セイコーインスツル株式会社 Uncle escapement and mechanical watch with the same
EP2706416B1 (en) * 2012-09-07 2015-11-18 The Swatch Group Research and Development Ltd Constant force flexible anchor
WO2016001740A2 (en) * 2014-07-03 2016-01-07 Preciflex Sa Clockwork mechanisms for double accumulation and power transmission dedicated mono-conrolled movement
WO2016113704A2 (en) * 2015-01-16 2016-07-21 Creaditive Ag Timepiece, control element and method for operating a control element with high control quality

Also Published As

Publication number Publication date
EP3485332B1 (en) 2022-01-12
WO2018015145A1 (en) 2018-01-25
CH712715A2 (en) 2018-01-31
CH712715B1 (en) 2020-06-30
JP2019521346A (en) 2019-07-25
CN109478036A (en) 2019-03-15
CN109478036B (en) 2021-01-01

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