EP3293583A1 - Escapement mechanism - Google Patents
Escapement mechanism Download PDFInfo
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- EP3293583A1 EP3293583A1 EP16187711.3A EP16187711A EP3293583A1 EP 3293583 A1 EP3293583 A1 EP 3293583A1 EP 16187711 A EP16187711 A EP 16187711A EP 3293583 A1 EP3293583 A1 EP 3293583A1
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- European Patent Office
- Prior art keywords
- wheel
- release
- disengagement
- oscillator
- mechanism according
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- 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
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- 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
Definitions
- the present invention relates to the field of watchmaking. It concerns an escape mechanism and, more particularly, a free escape mechanism with direct impulses.
- the escapement is an essential part of mechanical watch movements. It is usually placed between a cog and an oscillator. The train transmits to the exhaust a torque coming from the energy source, which maintains and counts oscillations of the oscillator.
- the trigger escapement is the one of the two that has the best energy efficiency. On the other hand, it is sensitive to strong acceleration and shock with significant risks of galloping and tripping. As a result, the detent escapement is not widespread because it supports to be worn and difficult to mate with the high frequency oscillators, which tend today to prevail because of their better accuracy.
- the anchor escapement does not know these risks but has the disadvantage of a higher energy consumption due to more shocks, inertia and greater friction at the anchor.
- the present invention aims to overcome the aforementioned drawbacks by providing an exhaust that is compatible with the high accelerations of a high frequency oscillator and the constraints of a wrist carry while maintaining low power consumption.
- the springs of the trigger rockers are designed to exert a low restoring force.
- the increase in this restoring force would reduce the impact sensitivity and support high frequencies by accelerating the return of the rocker in its rest position but would have the disadvantage of increasing the energy consumption during release.
- the present invention implements a particular escape mechanism in which one seeks to recover the energy necessary for the release rather than to reduce it. Like any escapement trigger, this mechanism has a single rest position, the release and the impulse occur alternately out of two, the other being a lost shot.
- a first embodiment of an escape mechanism according to the invention is presented on the Figures 1 to 6 .
- the mechanism comprises a wheel mobile 1 kinematically connected to an escape wheel 2 and forming with it a train driven by a motor member not shown, typically a cylinder.
- the escape wheel has teeth pulse 3 for periodically giving a pulse to an oscillator here taking the form of a balance of which only the plate 4 and the pin 5 are shown.
- the moving wheel 1 comprises resting studs 6 arranged in a circle at the end of radially extending arm.
- the exhaust mechanism further comprises a release wheel 7 in the form of a wheel pivoted on the same axis as the escape wheel.
- the release mobile 7 comprises idle pins 8 and a unidirectional drive device formed by flexible blades 9 extending radially and bearing against ratchet stops 10 in their rest position.
- the ratchet stops 10 are adjacent to the rest pins but could be otherwise as will be discussed later.
- the angular amplitude of the rotation of the disengagement wheel 7 with respect to the escape wheel 2 is limited by a positioning stop 11, integral with the disengagement wheel 7.
- a return spring 12 arranged between the escape wheel 2 and the release wheel 7 tends to bring the release wheel 7 into an angular position defined with reference to the escape wheel 2.
- the figure 2 represents the exhaust mechanism at rest, the rocker has just traveled freely the additional arc and the pin 5 preparing to come into contact with a flexible blade 9 of the release mobile 7. The wheel is stopped, a resting stud 6 of the wheelhouse being in abutment against a rest pin 8 of the release wheel 7.
- the figure 3 represents the escape mechanism during the disengagement phase during which the disengagement wheel 7 moves from an engagement position to a disengagement position under the pulse of the beam transmitted through the flexible blade 9.
- the flexible blade 9 is in abutment against the pawl stopper 10 by forming a ratchet mechanism so that the balance of the impulse causes the rotation of the disengagement device 7 in the counterclockwise direction as shown in the figures.
- the surfaces rest pin 6 and rest pin 8 slide against each other.
- the contact surfaces of the rest pins 8 are circular base cylinder portions coaxial with the pivot axis of the disengagement wheel 7 so that the disengagement of the disengagement wheel 7 does not cause in advance This configuration corresponds to a draw angle of zero.
- the surface of the rest pins could have a positive pulling angle to secure the locking of the release wheel 7 or a negative draw angle to facilitate its release.
- the wheel set 1 is impeded in its rotation and does not transmit engine torque to the escape wheel 2 which remains in its waiting position .
- the release wheel 7 pivots with reference to the escape wheel 2 and the return spring 12 accumulates, in elastic form, kinetic energy from the beam.
- the flexible arms 9 and the rest pins 8 are arranged radially in a regular angular distribution so that the release wheel 7 is balanced on its axis of rotation and, as a result, insensitive to the accelerations experienced by the timepiece. Furthermore, the return spring 12 tends to keep the release member 7 abuts against the escape wheel 2 in its engagement position. Thus it is not necessary to provide a positive draft angle to further secure the release mobile 7 which minimizes the disturbances caused to the oscillator during release.
- the figure 4 represents the escape mechanism in the pulse phase.
- the figure 5 represents the escape mechanism at the end of the impulse phase and immediately before the stoppage of the train caused by the meeting of a rest pin 6 with a rest pin 8.
- the circular trajectories of the rest pins and rest pins are intersecting and the mechanism is arranged so that a stud 6 encounters a pin 8 when the release mobile 7 is in the engagement position, that is to say when the escape wheel 2 has caught up the release wheel 7, the positioning abutment 11 bears against the escape wheel 2. Therefore, the advance of the train is limited when the disengagement wheel is in the engagement position.
- the figure 6 represents the escape mechanism at rest at the moment of the blow lost during the next alternation.
- the rocker pivots counterclockwise and the pin 5 spreads the flexible arm 9 without rotating the release member 7.
- the flexible blade 9 constitutes with the ratchet stop 10 a unidirectional ratchet type drive system.
- the back of the impulse teeth has a circular profile matching the shape of the balance plate to prevent the accidental recoil of the escape wheel while the pendulum traverses the additional arc.
- the wheel is driven by a dual motor: the motor that propels the wheel in a conventional manner, and the return spring 12 which tows the escape wheel 2 when it starts.
- the action of the return spring 12 is all the more effective as it is fixed on the release mobile 7 which is itself rotated by the oscillator.
- a portion of the energy contributing to the acceleration of the train comes from the oscillator which goes against the generally accepted idea that we must avoid braking the oscillator not to disturb its isochronism and limit energy consumption.
- the transfer of energy from the oscillator to the wheel is optimized thanks to the release mobile 7 and the return spring 12 which acts as a damper and limits the loss of energy at the time of the impact of the ankle on the flexible arm.
- the acceleration of the wheel is therefore given smoothly but as it is stronger than that which would be given by a single drive member, the time required for the escape wheel 2 to catch the pin 5 of the balance is reduced.
- the device can operate at higher frequencies but also that the pulse angle traveled by the pendulum in the pulse phase is greater.
- the stop of the gear is caused by the meeting of two movable elements with reference to the frame, kinematically linked in a discontinuous way.
- the release mobile Unlike a trigger rocker that reciprocates by dissipating the energy it receives from the balance, the release mobile always pivots in the same direction which is also that of the pulse given by the oscillator as well as that of the displacement of the escape wheel.
- the energy accumulated in elastic form at each release in the return spring is restored when starting the escape wheel.
- the recovery of a part of the energy taken from the oscillator in the release phase characterizes a new type of exhaust that can be designated by the term "turbo-relaxation", which presents interesting performances. in terms of energy efficiency as well as frequency and reliability of operation.
- the rocker plate comprises a peg which makes the release and a pulse pad, separate from the peg, arranged to receive the impulse of the escape wheel.
- the respective angular and radial positions of the peg and the pallet relative to the axis of the beam define the beginning of the release and pulse phases and the angular clearance and pulse rates.
- the angular velocity of the escape wheel is higher than the speed reached by the escape wheel at the beginning of the pulse.
- the mechanism of Exhaust according to the invention can be arranged in such a way that the kinetic energy acquired by the disengaging wheel during the disengagement phase is at least partially restored and contributes to the acceleration of the wheel.
- the unidirectional driving device could be placed on the oscillator.
- the release mobile could be connected to the escape wheel by flexible elements.
- the release movement of the release mobile under the action of the oscillator could be likened to a rotation or any other path adapted to the release of the rest pins.
- These same flexible elements could also play the role of return spring.
- the Figures 7 to 12 represent a second embodiment of an escape mechanism according to the invention.
- a cogwheel formed of a cogwheel 1 and an escapement wheel 2 kinematically connected to each other and a rocker of which the plate 4 provided with 5.
- the mechanism also comprises a unidirectional drive device consisting of a plurality of flexible blades 9 abutting on pawl stops 10.
- the unidirectional drive device is here mounted integral with the escape wheel 2. In an original way the escape wheel is not pivoted on the frame of the timepiece but on the release wheel 7 which here takes the form of a rocker pivoted on the same axis as the moving wheel 1.
- the mechanism also comprises a positioning stop 11 adapted to position the release member 7 in an engagement position in which the rotation of the escape wheel is limited.
- a positioning stop 11 adapted to position the release member 7 in an engagement position in which the rotation of the escape wheel is limited.
- the figure 9 represents the escape mechanism in the disengagement phase.
- the plate pin 5 has hit a flexible blade 9 resting on a pawl stop 10.
- the rotation of the escape wheel 2 being hampered by the pallet rest 13, it is composed of the release mobile 7 , the escapement wheel 2 and the moving wheel 1 which is rotated in the counterclockwise direction about the pivot axis of the wheel set.
- the decline of the wheels in the phase of disengagement causes the re-arming of the drive member so that the energy provided by the oscillator during the release is stored in elastic form by the drive member before being restored to propel the train.
- the escape wheel 2 and the wheel are released.
- the train accelerates and the release wheel 7 returns to its position of engagement against the positioning stop 11.
- the rest plane of the pallet of rest is preferably an orthoradial plane with reference to the axis of rotation of the release mobile which corresponds to a zero draw angle.
- the rest plane may have a different inclination or a non-rectilinear profile.
- the figure 10 represents the escape mechanism in the impulse phase after the release mobile 7 has returned to its engagement position bearing against the positioning stop 11 and a pulse tooth 3 of the escape wheel 2 caught the peg 5 of the pendulum.
- the figure 11 represents the mechanism at the end of the impulse phase and just before the stoppage of the train caused by the meeting of the impulse tooth 3 with the pallet rest 13.
- the figure 12 shows the mechanism at rest during the blow lost at the return of the balance at the time of passage of the ratchet.
- the energy provided by the oscillator during the release is at least partially restored to drive the wheel.
- this second embodiment directly uses the drive member to temporarily store, in elastic form, the energy from the oscillator during the release. It is also the driving force that keeps the release mobile 7 in the engagement position. Note that in the exhausts of the prior art, the gear back slightly back on release when the draft angle is positive, this provision for the purpose of securing the trigger and not to recover energy.
- the unidirectional drive device could have only one pawl and be integral with the release mobile or the oscillator.
- the release and impulse functions could be provided by separate teeth on the escape wheel and by separate vanes on the oscillator.
- the escape mobile could be translated rather than rotated. It could also be connected to the frame by a flexible element.
- the release mobile could comprise a counterweight so that the moving assembly that it composes with the escape wheel is balanced on its axis of rotation.
- the mechanism could comprise a second stop for limiting the amplitude of the movement of the disengagement wheel and a return spring to accelerate the return of the disengagement wheel in its engagement position.
- the mechanism could also include a safety device that would limit the movement of the disengagement wheel in the free oscillation phases of the oscillator.
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Abstract
L'invention concerne un mécanisme d'échappement libre à coup perdu pour pièce d'horlogerie comportant : - un rouage destiné à être entrainé par un organe moteur et comportant un mobile de rouage (1) et une roue d'échappement (2), solidaires l'un de l'autre en rotation autour d'un axe de rotation respectif, - un oscillateur apte à recevoir une impulsion de la roue d'échappement (2) afin d'entretenir ses oscillations. Ce mécanisme comporte en outre : - un mobile de dégagement (7) agencé pour coopérer en rotation avec la roue d'échappement et se déplacer, lors d'une phase de dégagement, sous une impulsion de l'oscillateur, entre une position d'engagement dans laquelle l'avance du rouage est bloquée et une position de dégagement dans laquelle l'avance du rouage est libre, et - un dispositif d'entrainement unidirectionnel du mobile de dégagement (7) agencé pour transmettre ladite impulsion de l'oscillateur au mobile de dégagement (7) pour le faire passer de la position d'engagement à la position de dégagement, de telle sorte qu'une portion de l'énergie fournie par une impulsion de l'oscillateur lors du dégagement du mobile de dégagement (7), contribue à l'accélération du rouage.The invention relates to a free escapement mechanism for a timepiece comprising: a gear train intended to be driven by a motor member and comprising a gear wheel (1) and an escape wheel (2), integral with each other in rotation about a respective axis of rotation, an oscillator adapted to receive a pulse from the escape wheel (2) in order to maintain its oscillations. This mechanism furthermore comprises: - a release wheel (7) arranged to cooperate in rotation with the escape wheel and move, during a disengagement phase, under a pulse of the oscillator, between an engagement position in which the advance the gear is locked and a release position in which the advance of the gear is free, and a unidirectional drive device for the release mobile arranged to transmit said pulse of the oscillator to the release mobile (7) to move it from the engagement position to the disengagement position, such that a portion of the energy supplied by a pulse of the oscillator during the release of the disengagement wheel (7), contributes to the acceleration of the train.
Description
La présente invention se rapporte au domaine de l'horlogerie. Elle concerne, un mécanisme d'échappement et, plus particulièrement, un mécanisme d'échappement libre à impulsions directes.The present invention relates to the field of watchmaking. It concerns an escape mechanism and, more particularly, a free escape mechanism with direct impulses.
L'échappement est une partie essentielle des mouvements d'horlogerie mécanique. Il est généralement placé entre un rouage et un oscillateur. Le rouage transmet à l'échappement un couple provenant de la source d'énergie, qui entretient et compte les oscillations de l'oscillateur.The escapement is an essential part of mechanical watch movements. It is usually placed between a cog and an oscillator. The train transmits to the exhaust a torque coming from the energy source, which maintains and counts oscillations of the oscillator.
Il existe principalement deux types d'échappement libre, les échappements à ancre à impulsions indirectes qui possèdent deux positions de repos et les échappements à détente à impulsions directes qui n'ont qu'une seule position de repos et un coup perdu.There are mainly two types of free escapement, the indirect-pulse anchor escapements that have two rest positions and the direct-trigger expansion exhausts that have only one rest position and a lost blow.
L'échappement à détente est celui des deux qui a le meilleur rendement énergétique. Il est en revanche sensible aux fortes accélérations et aux chocs avec des risques importants de galop et de trébuchement. Il en résulte que l'échappement à détente est peu répandu car il supporte mal d'être porté et s'accouple difficilement avec les oscillateurs à fréquence élevée, qui tendent aujourd'hui à s'imposer en raison de leur meilleure précision.The trigger escapement is the one of the two that has the best energy efficiency. On the other hand, it is sensitive to strong acceleration and shock with significant risks of galloping and tripping. As a result, the detent escapement is not widespread because it supports to be worn and difficult to mate with the high frequency oscillators, which tend today to prevail because of their better accuracy.
L'échappement à ancre ne connait pas ces risques mais présente comme inconvénient une consommation énergétique plus élevée à cause des chocs plus nombreux, de l'inertie et des frottements plus importants au niveau de l'ancre.The anchor escapement does not know these risks but has the disadvantage of a higher energy consumption due to more shocks, inertia and greater friction at the anchor.
La présente invention a pour but de remédier aux inconvénients précités en proposant un échappement qui soit compatible avec les fortes accélérations d'un oscillateur à fréquence élevée et aux contraintes d'un portage au poignet tout en conservant une faible consommation d'énergie.The present invention aims to overcome the aforementioned drawbacks by providing an exhaust that is compatible with the high accelerations of a high frequency oscillator and the constraints of a wrist carry while maintaining low power consumption.
L'invention concerne un mécanisme d'échappement libre à coup perdu pour pièce d'horlogerie comportant :
- un rouage destiné à être entrainé par un organe moteur et comportant un mobile de rouage et une roue d'échappement, solidaires l'un de l'autre en rotation autour d'un axe de rotation respectif,
- un oscillateur apte à recevoir une impulsion de la roue d'échappement afin d'entretenir ses oscillations.
- a gear train intended to be driven by a motor member and comprising a gear wheel and an escape wheel, integral with each other in rotation about a respective axis of rotation,
- an oscillator adapted to receive a pulse from the escape wheel in order to maintain its oscillations.
Le mécanisme d'échappement de l'invention se caractérise par le fait qu'il comporte en outre :
- un mobile de dégagement agencé pour coopérer en rotation avec la roue d'échappement et se déplacer, lors d'une phase de dégagement, sous une impulsion de l'oscillateur, entre une position d'engagement dans laquelle l'avance du rouage est bloquée et une position de dégagement dans laquelle l'avance du rouage est libre, et
- un dispositif d'entrainement unidirectionnel du mobile de dégagement agencé pour transmettre ladite impulsion de l'oscillateur au mobile de dégagement pour le faire passer de la position d'engagement à la position de dégagement,
- a release wheel arranged to co-operate in rotation with the escape wheel and to move, during a disengagement phase, under a pulse of the oscillator, between an engagement position in which the advance of the gear train is blocked and a release position in which the advance of the gear train is free, and
- a unidirectional drive device of the disengagement device arranged to transmit said pulse of the oscillator to the disengagement wheel from the engagement position to the disengagement position,
Les revendications dépendantes proposent d'autres caractéristiques de l'invention.The dependent claims provide other features of the invention.
D'autres détails de l'invention apparaîtront plus clairement à la lecture de la description qui suit, faite en référence au dessin annexé dans lequel :
- les
figures 1 à 6 représentent un premier mode de réalisation d'un mécanisme d'échappement à turbo détente selon l'invention, - la
figure 1 représente une vue en perspective du premier mode de réalisation, - les
figures 2 à 6 proposent des vues chronologiques de l'ensemble de lafigure 1 , à différentes étapes de son fonctionnement, - la
figure 7 représente une vue en perspective d'un deuxième mode de réalisation de l'invention, - les
figures 8 à 12 proposent des vues chronologiques de l'ensemble de lafigure 7 , à différentes étapes de son fonctionnement.
- the
Figures 1 to 6 represent a first embodiment of a turboexpulsion exhaust mechanism according to the invention, - the
figure 1 represents a perspective view of the first embodiment, - the
Figures 2 to 6 provide chronological views of the entirefigure 1 , at different stages of its operation, - the
figure 7 represents a perspective view of a second embodiment of the invention, - the
Figures 8 to 12 provide chronological views of the entirefigure 7 , at different stages of its operation.
Afin de réduire l'énergie perdue lors du dégagement et de perturber le moins possible l'isochronisme de l'oscillateur, les ressorts des bascules de détente sont conçus pour exercer une faible force de rappel. L'augmentation de cette force de rappel permettrait de réduire la sensibilité au choc et de supporter des fréquences élevées en accélérant le retour de la bascule dans sa position de repos mais aurait pour inconvénient d'accroitre la consommation d'énergie lors du dégagement. D'une façon originale, la présente invention met en oeuvre un mécanisme d'échappement particulier dans lequel on cherche à récupérer l'énergie nécessaire au dégagement plutôt qu'à la réduire. Comme tout échappement à détente, ce mécanisme possède une seule position de repos, le dégagement et l'impulsion s'effectuent une alternance sur deux, l'autre étant un coup perdu.In order to reduce the energy lost during the disengagement and to disturb as little as possible the isochronism of the oscillator, the springs of the trigger rockers are designed to exert a low restoring force. The increase in this restoring force would reduce the impact sensitivity and support high frequencies by accelerating the return of the rocker in its rest position but would have the disadvantage of increasing the energy consumption during release. In an original way, the present invention implements a particular escape mechanism in which one seeks to recover the energy necessary for the release rather than to reduce it. Like any escapement trigger, this mechanism has a single rest position, the release and the impulse occur alternately out of two, the other being a lost shot.
On notera que les figures servent simplement à illustrer les principes de fonctionnement de l'invention. L'homme du métier saura dimensionner les différents éléments de façon à conférer au mécanisme les performances désirées.It should be noted that the figures serve merely to illustrate the operating principles of the invention. Those skilled in the art will know how to size the different elements so as to give the mechanism the desired performance.
Un premier mode de réalisation d'un mécanisme d'échappement selon l'invention est présenté sur les
La
La
De façon avantageuse, les bras flexibles 9 et les chevilles de repos 8 sont disposés radialement selon une répartition angulaire régulière de sorte que le mobile de dégagement 7 est équilibré sur son axe de rotation et, de ce fait, peu sensible aux accélérations subies par la pièce d'horlogerie. Par ailleurs, le ressort de rappel 12 tend à maintenir le mobile de dégagement 7 en butée contre la roue d'échappement 2 dans sa position d'engagement. Ainsi il n'est pas nécessaire de prévoir un angle de tirage positif pour sécuriser davantage le mobile de dégagement 7 ce qui permet de minimiser les perturbations causées à l'oscillateur lors du dégagement.Advantageously, the
La
La
La
D'une façon connue, le dos des dents d'impulsion possède un profil circulaire épousant la forme du plateau du balancier pour empêcher le recul accidentel de la roue d'échappement pendant que le balancier parcourt l'arc supplémentaire.In a known manner, the back of the impulse teeth has a circular profile matching the shape of the balance plate to prevent the accidental recoil of the escape wheel while the pendulum traverses the additional arc.
De façon originale, le rouage est animé par une double motorisation : l'organe moteur qui propulse le rouage d'une façon conventionnelle, et le ressort de rappel 12 qui tracte la roue d'échappement 2 lors de son démarrage. L'action du ressort de rappel 12 est d'autant plus efficace qu'il est fixé sur le mobile de dégagement 7 qui est lui-même entrainé en rotation par l'oscillateur. Une portion de l'énergie contribuant à l'accélération du rouage provient donc de l'oscillateur ce qui va à l'encontre de l'idée généralement admise qu'il faut éviter de freiner l'oscillateur pour ne pas perturber son isochronisme et limiter la consommation d'énergie. Le transfert de l'énergie de l'oscillateur vers le rouage est optimisé grâce au mobile de dégagement 7 et au ressort de rappel 12 qui joue le rôle d'amortisseur et limite la perte d'énergie au moment du choc de la cheville sur le bras flexible. L'accélération du rouage est donc donnée sans à-coup mais comme elle est plus forte que celle qui serait donnée par un seul organe moteur, le temps nécessaire à la roue d'échappement 2 pour rattraper la cheville 5 du balancier est réduit. Cela signifie que le dispositif peut fonctionner à des fréquences plus élevées mais aussi que l'angle d'impulsion parcouru par le balancier dans la phase d'impulsion est plus grand. Alternativement il est possible de profiter de la double motorisation et de l'angle d'impulsion élargi pour réduire la puissance de l'organe moteur afin d'augmenter son autonomie.In an original way, the wheel is driven by a dual motor: the motor that propels the wheel in a conventional manner, and the
De façon originale, l'arrêt du rouage est causé par la rencontre de deux éléments mobiles en référence au bâti, cinématiquement liés de façon discontinue.In an original way, the stop of the gear is caused by the meeting of two movable elements with reference to the frame, kinematically linked in a discontinuous way.
Contrairement à une bascule de détente qui effectue un mouvement de va-et-vient en dissipant l'énergie qu'elle reçoit du balancier, le mobile de dégagement pivote toujours dans le même sens qui est également celui de l'impulsion donnée par l'oscillateur ainsi que celui du déplacement de la roue d'échappement. L'énergie accumulée sous forme élastique à chaque dégagement dans le ressort de rappel est restituée lors du démarrage de la roue d'échappement. La récupération d'une partie de l'énergie prise à l'oscillateur dans la phase de dégagement caractérise un nouveau type d'échappement que l'on peut désigner par le terme de « turbo-détente », Celui-ci présentant des performances intéressantes en termes de rendement énergétique ainsi que de fréquence et de sureté de fonctionnement.Unlike a trigger rocker that reciprocates by dissipating the energy it receives from the balance, the release mobile always pivots in the same direction which is also that of the pulse given by the oscillator as well as that of the displacement of the escape wheel. The energy accumulated in elastic form at each release in the return spring is restored when starting the escape wheel. The recovery of a part of the energy taken from the oscillator in the release phase characterizes a new type of exhaust that can be designated by the term "turbo-relaxation", which presents interesting performances. in terms of energy efficiency as well as frequency and reliability of operation.
Selon une variante non représentée du premier mode de réalisation, le plateau du balancier comporte une cheville qui effectue le dégagement et une palette d'impulsion, distincte de la cheville, agencée pour recevoir l'impulsion de la roue d'échappement. Les positions angulaires et radiales respectives de la cheville et de la palette par rapport à l'axe du balancier, définissent le début des phases de dégagement et d'impulsion et les vitesses angulaires de dégagement et d'impulsion. Pour raccourcir la phase de dégagement il est par exemple possible d'augmenter la vitesse angulaire du mobile de dégagement en éloignant la cheville 5 de l'axe du balancier alors que la palette d'impulsion en reste proche. Dans cette configuration, la vitesse angulaire du mobile d'échappement est plus élevée que la vitesse atteinte par la roue d'échappement au début de l'impulsion. L'homme du métier saura configurer le mécanisme de sorte que l'entrainement du mobile de dégagement 7 prenne fin avant le début de l'impulsion. Dans le laps de temps précédent l'impulsion où le mobile d'échappement n'est plus entrainé, ce dernier ralentit sous l'action du ressort de rappel en contribuant à l'accélération du rouage. A l'instar d'un relais entre deux coureurs d'américaine, le transfert d'énergie cinétique entre le mobile de dégagement et le rouage s'opère sans choc grâce à l'action du ressort de rappel 12. Ainsi le mécanisme d'échappement selon l'invention peut être agencé de manière à ce que l'énergie cinétique acquise par le mobile de dégagement lors de la phase de dégagement soit au moins partiellement restituée et contribue à l'accélération du rouage.According to a variant not shown of the first embodiment, the rocker plate comprises a peg which makes the release and a pulse pad, separate from the peg, arranged to receive the impulse of the escape wheel. The respective angular and radial positions of the peg and the pallet relative to the axis of the beam, define the beginning of the release and pulse phases and the angular clearance and pulse rates. To shorten the disengagement phase it is for example possible to increase the angular velocity of the disengagement mobile by moving the
L'homme du métier saura apporter d'autres variantes d'exécution à ce premier mode de réalisation sans sortir du cadre des revendications. En particulier, le dispositif d'entrainement unidirectionnel pourrait être placé sur l'oscillateur. Plutôt que d'être pivoté sur le bâti, Le mobile de dégagement pourrait être relié à la roue d'échappement par des éléments flexibles. Dans ce cas, le mouvement de dégagement du mobile de dégagement sous l'action de l'oscillateur pourrait être assimilé à une rotation où à toute autre trajectoire adaptée au dégagement des chevilles de repos. Ces mêmes éléments flexibles pourraient également jouer le rôle de ressort de rappel.Those skilled in the art will be able to bring other variant embodiments to this first embodiment without departing from the scope of the claims. In particular, the unidirectional driving device could be placed on the oscillator. Rather than being rotated on the frame, the release mobile could be connected to the escape wheel by flexible elements. In this case, the release movement of the release mobile under the action of the oscillator could be likened to a rotation or any other path adapted to the release of the rest pins. These same flexible elements could also play the role of return spring.
Les
Dans la configuration de la
La
La
La
La
Comme dans le premier mode de réalisation, l'énergie fournit par l'oscillateur lors du dégagement est au moins partiellement restituée pour entrainer le rouage. De façon originale ce deuxième mode de réalisation utilise directement l'organe moteur pour stocker temporairement, sous forme élastique, l'énergie provenant de l'oscillateur lors du dégagement. C'est aussi la force motrice qui maintient le mobile de dégagement 7 dans la position d'engagement. A noter que dans les échappements de l'art antérieur, le rouage recule légèrement lors du dégagement lorsque l'angle de tirage est positif, cette disposition ayant pour but de sécuriser la détente et non pas de récupérer de l'énergie.As in the first embodiment, the energy provided by the oscillator during the release is at least partially restored to drive the wheel. In an original way this second embodiment directly uses the drive member to temporarily store, in elastic form, the energy from the oscillator during the release. It is also the driving force that keeps the release mobile 7 in the engagement position. Note that in the exhausts of the prior art, the gear back slightly back on release when the draft angle is positive, this provision for the purpose of securing the trigger and not to recover energy.
De façon originale c'est le déplacement de l'axe de la roue d'échappement et non le déplacement de la palette de repos, qui provoque le dégagement.In an original way it is the displacement of the axis of the escape wheel and not the displacement of the pallet of rest, which causes the release.
L'homme du métier saura apporter des variantes d'exécution à ce deuxième mode de réalisation sans sortir du cadre des revendications. En particulier, le dispositif d'entrainement unidirectionnel pourrait ne comporter qu'un seul cliquet et être solidaire du mobile de dégagement ou de l'oscillateur. Les fonctions de dégagement et d'impulsion pourraient être assurées par des dents distinctes sur la roue d'échappement et par des palettes distinctes sur l'oscillateur. Le mobile d'échappement pourrait être translaté plutôt qu'être pivoté. Il pourrait également être relié au bâti par un élément flexible. Le mobile de dégagement pourrait comporter un contre poids afin que l'ensemble mobile qu'il compose avec la roue d'échappement soit équilibré sur son axe de rotation. Le mécanisme pourrait comporter une deuxième butée pour limiter l'amplitude du déplacement du mobile de dégagement ainsi qu'un ressort de rappel pour accélérer le retour du mobile de dégagement dans sa position d'engagement. Le mécanisme pourrait également comporter un dispositif de sécurité qui limiterait le déplacement du mobile de dégagement dans les phases de libre oscillation de l'oscillateur.Those skilled in the art will be able to provide alternative embodiments to this second embodiment without departing from the scope of the claims. In particular, the unidirectional drive device could have only one pawl and be integral with the release mobile or the oscillator. The release and impulse functions could be provided by separate teeth on the escape wheel and by separate vanes on the oscillator. The escape mobile could be translated rather than rotated. It could also be connected to the frame by a flexible element. The release mobile could comprise a counterweight so that the moving assembly that it composes with the escape wheel is balanced on its axis of rotation. The mechanism could comprise a second stop for limiting the amplitude of the movement of the disengagement wheel and a return spring to accelerate the return of the disengagement wheel in its engagement position. The mechanism could also include a safety device that would limit the movement of the disengagement wheel in the free oscillation phases of the oscillator.
Ainsi est proposé un type nouveau de mécanisme d'échappement pour montre mécanique, qui présente les avantages des échappements à ancre et des échappements à détente sans en posséder les inconvénients.Thus is proposed a new type of mechanical watch escapement mechanism, which has the advantages of anchor escapements and expansion exhausts without the disadvantages.
Claims (15)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16187711.3A EP3293583A1 (en) | 2016-09-07 | 2016-09-07 | Escapement mechanism |
EP17761283.5A EP3510449B1 (en) | 2016-09-07 | 2017-09-06 | Escapement mechanism |
PCT/EP2017/072392 WO2018046563A1 (en) | 2016-09-07 | 2017-09-06 | Escapement mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP16187711.3A EP3293583A1 (en) | 2016-09-07 | 2016-09-07 | Escapement mechanism |
Publications (1)
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EP3293583A1 true EP3293583A1 (en) | 2018-03-14 |
Family
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP16187711.3A Withdrawn EP3293583A1 (en) | 2016-09-07 | 2016-09-07 | Escapement mechanism |
EP17761283.5A Active EP3510449B1 (en) | 2016-09-07 | 2017-09-06 | Escapement mechanism |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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EP17761283.5A Active EP3510449B1 (en) | 2016-09-07 | 2017-09-06 | Escapement mechanism |
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WO (1) | WO2018046563A1 (en) |
Cited By (3)
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WO2020015889A1 (en) * | 2018-07-20 | 2020-01-23 | Creaditive Ag | Escapement system and measuring device comprising said escapement system |
US20210141340A1 (en) * | 2018-07-02 | 2021-05-13 | Complitime Sa | Timepiece escapement mechanism |
EP4250019A1 (en) * | 2022-03-21 | 2023-09-27 | Patek Philippe SA Genève | Timepiece oscillator for extra-flat movement |
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EP1538491A1 (en) * | 2003-12-04 | 2005-06-08 | Montres Breguet S.A. | Detent escapement for watches |
EP1538490A1 (en) * | 2003-12-04 | 2005-06-08 | Montres Breguet S.A. | Detent escapement for wrist-watches |
EP1710636A1 (en) * | 2005-04-06 | 2006-10-11 | Daniel Rochat | Escapement for a watch |
EP1770452A1 (en) * | 2005-09-30 | 2007-04-04 | Peter Baumberger | Detent escapement for timepieces |
EP2199875A2 (en) * | 2008-12-16 | 2010-06-23 | Rolex Sa | Detent escapement |
CH704151B1 (en) * | 2009-09-14 | 2016-02-29 | Seiko Instr Inc | Detent escapement mechanical watch and integrating it. |
-
2016
- 2016-09-07 EP EP16187711.3A patent/EP3293583A1/en not_active Withdrawn
-
2017
- 2017-09-06 WO PCT/EP2017/072392 patent/WO2018046563A1/en unknown
- 2017-09-06 EP EP17761283.5A patent/EP3510449B1/en active Active
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EP1538491A1 (en) * | 2003-12-04 | 2005-06-08 | Montres Breguet S.A. | Detent escapement for watches |
EP1538490A1 (en) * | 2003-12-04 | 2005-06-08 | Montres Breguet S.A. | Detent escapement for wrist-watches |
EP1710636A1 (en) * | 2005-04-06 | 2006-10-11 | Daniel Rochat | Escapement for a watch |
EP1770452A1 (en) * | 2005-09-30 | 2007-04-04 | Peter Baumberger | Detent escapement for timepieces |
EP2199875A2 (en) * | 2008-12-16 | 2010-06-23 | Rolex Sa | Detent escapement |
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Publication number | Priority date | Publication date | Assignee | Title |
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US20210141340A1 (en) * | 2018-07-02 | 2021-05-13 | Complitime Sa | Timepiece escapement mechanism |
US11988993B2 (en) * | 2018-07-02 | 2024-05-21 | Complitime Sa | Timepiece escapement mechanism |
WO2020015889A1 (en) * | 2018-07-20 | 2020-01-23 | Creaditive Ag | Escapement system and measuring device comprising said escapement system |
US20210286320A1 (en) * | 2018-07-20 | 2021-09-16 | Creaditive Ag | Escapement system and measuring device comprising said escapement system |
JP2021531479A (en) * | 2018-07-20 | 2021-11-18 | クレアディティヴ・アーゲー | Escapement system and measuring device equipped with it |
JP7441835B2 (en) | 2018-07-20 | 2024-03-01 | クレアディティヴ・アーゲー | Escapement system and measuring device equipped with the same |
US12032334B2 (en) * | 2018-07-20 | 2024-07-09 | Creaditive Ag | Escapement system and measuring device comprising said escapement system |
EP4250019A1 (en) * | 2022-03-21 | 2023-09-27 | Patek Philippe SA Genève | Timepiece oscillator for extra-flat movement |
Also Published As
Publication number | Publication date |
---|---|
WO2018046563A1 (en) | 2018-03-15 |
EP3510449B1 (en) | 2020-07-08 |
EP3510449A1 (en) | 2019-07-17 |
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