EP3001257B1 - Paraxial, isochronous timepiece resonator - Google Patents

Paraxial, isochronous timepiece resonator Download PDF

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Publication number
EP3001257B1
EP3001257B1 EP14186657.4A EP14186657A EP3001257B1 EP 3001257 B1 EP3001257 B1 EP 3001257B1 EP 14186657 A EP14186657 A EP 14186657A EP 3001257 B1 EP3001257 B1 EP 3001257B1
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EP
European Patent Office
Prior art keywords
resonator
flexible strips
timepiece
weight
timepiece resonator
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EP14186657.4A
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German (de)
French (fr)
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EP3001257A1 (en
Inventor
Jean-Jacques Born
Jean-Luc Helfer
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ETA SA Manufacture Horlogere Suisse
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ETA SA Manufacture Horlogere Suisse
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Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP14186657.4A priority Critical patent/EP3001257B1/en
Priority to CH01460/14A priority patent/CH710188A2/en
Priority to JP2015183560A priority patent/JP6154864B2/en
Priority to US14/863,513 priority patent/US9429916B2/en
Priority to CN201510622746.0A priority patent/CN105467810B/en
Priority to RU2015140956A priority patent/RU2695518C2/en
Publication of EP3001257A1 publication Critical patent/EP3001257A1/en
Priority to HK16111306.8A priority patent/HK1223163A1/en
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Publication of EP3001257B1 publication Critical patent/EP3001257B1/en
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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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • 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
    • G04B1/00—Driving mechanisms
    • 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
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton

Definitions

  • the invention relates to a clockwork resonator equipped, for watch movement, comprising at least one mass connected, by a plurality of flexible blades, to attachment points of a fixed structure constituted by a plate of a said movement. or arranged to be fixed on such a plate, said at least one mass being arranged to be subjected to a torque and / or a force, said resonator being arranged to oscillate with at least two degrees of freedom in translation, and said flexible blades being arranged to maintain oscillations of said at least one mass around a virtual pivot, wherein said flexible blades have long arms each of length at least two times greater than the shortest distance between said mass and said attachment points.
  • the invention also relates to a watch movement comprising a plate supporting, directly or indirectly via a fixed structure, at least one such resonator.
  • the invention also relates to a watch comprising such a movement.
  • the invention relates to the field of watch oscillators, and, more particularly, oscillators with flexible guidance around virtual pivots.
  • the document CH 481 411 in the name of MOVADO describes a resonator with long flexible blades in the form of loops joining a network of masses.
  • the document EP 2 151 722 A1 in the name of ROLEX describes a hairspring balance spring, which comprises at least two coplanar blades, secured by at least one of their respective homologous ends and wound in spirals with an angular offset able to neutralize the lateral forces that can be exerted on its central axis when one end of each blade is angularly displaced about said central axis relative to its other end.
  • the object of the invention is to propose a resonator, in particular a paraxial type resonator, one or more masses of which are movable in two linear and orthogonal degrees of freedom, which is naturally more isochronous than the already-guiding flexible resonators already studied.
  • the invention relates to a clock resonator according to claim 1.
  • the invention also relates to a watch movement comprising a plate supporting, directly or indirectly via a fixed structure, at least one such resonator.
  • the invention also relates to a watch comprising such a movement.
  • the invention uses, as flexible guides, very long spiral arms, to prevent displacements on a first axis X disturbing the restoring force on a second axis Y orthogonal to the first axis X, and vice versa.
  • the invention relates to a timepiece resonator 1 equipped, for watch movement 100, comprising at least one mass 2 connected by a plurality of flexible blades 3, 4, 5, 6, to gripping points 7, 8, 9, 10, of a fixed structure 11 constituted by a plate of a movement 100 or arranged to be fixed on such a plate, said at least one mass 2 being arranged to be subjected to a torque and / or effort, this resonator 1 being said here of paraxial type, that is to say arranged to oscillate with at least two degrees of freedom in translation, and the flexible blades 3, 4, 5, 6 being arranged to maintain oscillations of this at least one mass 2 around a virtual pivot w.
  • These flexible blades 3, 4, 5, 6 comprise long arms, each of which is at least twice as long as the shortest distance between the mass 2 and the attachment points 7, 8, 9, 10.
  • these long arms are all coplanar, and their developed length is greater than the circumference of the mass 2 in the same plane they occupy.
  • each of these long arms is spirally wound around this at least one mass 2.
  • the resonator 1 is of paraxial type and comprises, on the one hand, first flexible blades 4, 6, arranged to maintain oscillations of said at least one mass 2 around a virtual pivot w in a first direction X, and secondly flexible second blades 3, 5, arranged to maintain oscillations of this at least one mass 2 around the virtual pivot w in a second direction Y orthogonal to the first direction X.
  • each long arm constitutes a spiral of more than one turn.
  • each long arm constitutes a spiral comprising an integer number of turns to which is added a half-turn.
  • each long arm is sinuously profiled on either side of a radial, resulting from the virtual pivot w of the mass 2, and without a cusp.
  • each long arm has a developed length greater than the largest circumference of the mass 2.
  • the first flexible blades 4, 6 are identical to each other and symmetrical with respect to the virtual pivot w in the absence of excitation of the resonator 1
  • the second flexible blades 3, 5 are identical to each other and symmetrical with respect to the virtual pivot w in the absence of excitation of the resonator 1.
  • first flexible blades 4, 6, and the second flexible blades 3, 5 are all identical.
  • first flexible blades 4, 6 are even in number
  • second so-called flexible blades 3, 5 are even in number
  • first flexible blades 4, 6, and the second so-called flexible blades 3, 5, are in equal number.
  • first flexible blades 4, 6 are coplanar with each other and the second flexible blades 3, 5 are coplanar with each other.
  • the resonator 1 is plane, and the flexible blades 4, 6, and the second flexible blades 3, 5 are all coplanar with each other.
  • the pitch of the spiral is variable along the spiral for each of the first flexible blades 4, 6 and the second flexible blades 3, 5.
  • the thickness of the spiral is variable along the spiral, for each of the first flexible blades 4, 6 and the second flexible blades 3, 5.
  • the mass 2 is unique.
  • the mass 2 has a center of inertia coincides with the virtual pivot w in the absence of excitation of the resonator 1.
  • the resonator 1 comprises a plurality of masses 2, 20, concentric with each other around the virtual pivot ⁇ , each innermost of the masses being suspended to the next by first flexible blades 4, 6 and second flexible blades 3, 5 , and the outermost of the masses being suspended from the structure 11 by first flexible blades 40, 60 and second flexible blades 30, 50.
  • the long arms are wound in spirals of opposite direction.
  • the long arms are wound in spirals of the same direction.
  • a particular achievement, as visible on the figure 5 , of 1 paraxial plane resonator according to the invention, comprises a mass 2 suspended by four flexible blades 3, 4, 5, 6, forming long S-shaped sinuous profile arms, each on either side of a radial, Y +, X +, Y-, X-, from a virtual pivot w of mass 2, without a cusp.
  • the resonator 1 constitutes a one-piece component comprising the structure 11, the mass 2 or the masses 2, 20, the first flexible blades 4, 6, and the second flexible blades 3, 5.
  • the resonator 1 comprises flexible blades distributed in superposition on several planes, in particular in several parallel planes.
  • flexible blades in a first plane tend to print a return torque in a first direction
  • flexible blades, attached to the same mass, in a second plane tend to print a return torque in a second direction contrary to this first sense.
  • the resonator 1 further comprises an anti-shock device and torque limiting means, in particular based on the relative support of the different arms on each other, or the different meanders that form the same arm , in the example of the figure 5 , on each other ..
  • this resonator 1 is made of micro-machinable material or silicon or silicon oxide, or the like.
  • an oxide layer makes it possible to overcome the problem of thermal compensation.
  • it can be made of quartz, or the like.
  • the invention also relates to a watch movement 100 comprising a plate supporting, directly or indirectly via a fixed structure 11, at least one such resonator 1.
  • the invention also relates to a watch 200 comprising such a movement 100.
  • the resonator 1 allows the mass 2, which it comprises, to adopt a trajectory of curvilinear translation, or even more particularly, of elliptical translation.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Gyroscopes (AREA)

Description

Domaine de l'inventionField of the invention

L'invention concerne un résonateur d'horlogerie équipé, pour mouvement de montre, comportant au moins une masse reliée, par une pluralité de lames flexibles, à des points d'accrochage d'une structure fixe constituée par une platine d'un dit mouvement ou agencée pour être fixée sur une telle platine, ladite au moins une masse étant agencée pour être soumise à un couple ou/et un effort, ledit résonateur étant agencé pour osciller avec au moins deux degrés de liberté en translation, et lesdites lames flexibles étant agencées pour entretenir des oscillations de ladite moins une masse autour d'un pivot virtuel, où lesdites lames flexibles comportent de longs bras chacun de longueur au moins deux fois supérieure à la plus courte distance entre ladite masse et lesdits points d'accrochage.The invention relates to a clockwork resonator equipped, for watch movement, comprising at least one mass connected, by a plurality of flexible blades, to attachment points of a fixed structure constituted by a plate of a said movement. or arranged to be fixed on such a plate, said at least one mass being arranged to be subjected to a torque and / or a force, said resonator being arranged to oscillate with at least two degrees of freedom in translation, and said flexible blades being arranged to maintain oscillations of said at least one mass around a virtual pivot, wherein said flexible blades have long arms each of length at least two times greater than the shortest distance between said mass and said attachment points.

L'invention concerne encore un mouvement d'horlogerie comportant une platine supportant, directement ou indirectement par l'intermédiaire d'une structure fixe, au moins un tel résonateur.The invention also relates to a watch movement comprising a plate supporting, directly or indirectly via a fixed structure, at least one such resonator.

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

L'invention concerne le domaine des oscillateurs d'horlogerie, et, plus particulièrement, des oscillateurs à guidage flexible autour de pivots virtuels.The invention relates to the field of watch oscillators, and, more particularly, oscillators with flexible guidance around virtual pivots.

Arrière-plan de l'inventionBackground of the invention

On connaît des guidages flexibles, notamment pour positionner précisément un composant. Ces guidages sont connus pour avoir une force de rappel non linéaire, avec de défaut de non-linéarité de l'ordre du pour cent, qui équivaut à quelques centaines de secondes par jour. Une telle conception, qui présente par ailleurs de grands avantages, présente donc l'inconvénient d'être peu isochrone.Flexible guides are known, in particular for accurately positioning a component. These guides are known to have a nonlinear restoring force, with a non-linearity defect of the order of one percent, which equates to a few hundred seconds per day. Such a design, which also has great advantages, has the disadvantage of being poorly isochronous.

Les documents CH 509 617 et CH 509 618 au nom de OMEGA Louis Brant & Frère SA décrivent un résonateur avec une pluralité de lames longues élastiques et sinueuses, avec deux plaques ajourées, parallèles, reliées l'une à l'autre et à un bâti en deux points diamétralement opposés de leur contour, chaque plaque étant formée par plusieurs anneaux, ou plusieurs bras en zigzag, reliant chacun un de ces points de liaison à une masse centrale. Ces plaques vibrent en opposition de phase perpendiculairement à leurs plans, et chacune a une forme générale circulaire. Selon le cas, chaque plaque est formée d'une succession d'anneaux concentriques reliés par des attaches décalées de 90°, ou bien chaque bras en zigzag est formé d'une suite d'éléments en arc de cercle concentriques.The documents CH 509 617 and CH 509 618 in the name of OMEGA Louis Brant & Frère SA describe a resonator with a plurality of long elastic and sinuous blades, with two perforated plates, parallel, connected to one another and to a frame at two diametrically opposite points of their contour, each plate being formed by a plurality of rings, or multiple zigzag arms, each connecting one of these points of connection to a central mass. These plates vibrate in phase opposition perpendicular to their planes, and each has a generally circular shape. As the case may be, each plate is formed of a succession of concentric rings connected by fasteners offset by 90 °, or each zigzag arm is formed of a series of concentric arcuate elements.

Le document CH 481 411 au nom de MOVADO décrit un résonateur avec de longues lames flexibles en forme de boucles joignant un réseau de masses.The document CH 481 411 in the name of MOVADO describes a resonator with long flexible blades in the form of loops joining a network of masses.

Les documents FR 1 442 041 et FR 1 421 123 au nom de Centre Electronique Horloger décrivent aussi des systèmes similaires au précédent.The documents FR 1 442 041 and FR 1 421 123 in the name of Horloger Electronics Center also describe systems similar to the previous one.

Le document EP 2 151 722 A1 au nom de ROLEX décrit un spiral pour résonateur balancier-spiral, qui comporte au moins deux lames coplanaires, solidaires par au moins une de leurs extrémités homologues respectives et enroulées en spirales avec un décalage angulaire apte à neutraliser les forces latérales susceptibles d'être exercées sur son axe central lorsqu'une des extrémités de chaque lame est déplacée angulairement autour dudit axe central par rapport à son autre extrémité.The document EP 2 151 722 A1 in the name of ROLEX describes a hairspring balance spring, which comprises at least two coplanar blades, secured by at least one of their respective homologous ends and wound in spirals with an angular offset able to neutralize the lateral forces that can be exerted on its central axis when one end of each blade is angularly displaced about said central axis relative to its other end.

Résumé de l'inventionSummary of the invention

Le but de l'invention est de proposer un résonateur, notamment un résonateur de type paraxial, dont une ou plusieurs masses sont mobiles selon deux degrés de liberté linéaires et orthogonaux, qui soit naturellement plus isochrone que les résonateurs à guidage flexible déjà étudiés.The object of the invention is to propose a resonator, in particular a paraxial type resonator, one or more masses of which are movable in two linear and orthogonal degrees of freedom, which is naturally more isochronous than the already-guiding flexible resonators already studied.

A cet effet, l'invention concerne un résonateur d'horlogerie selon la revendication 1.For this purpose, the invention relates to a clock resonator according to claim 1.

L'invention concerne encore un mouvement d'horlogerie comportant une platine supportant, directement ou indirectement par l'intermédiaire d'une structure fixe, au moins un tel résonateur.The invention also relates to a watch movement comprising a plate supporting, directly or indirectly via a fixed structure, at least one such resonator.

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

Description sommaire des dessinsBrief description of the drawings

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

  • la figure 1 représente, de façon schématisée, partielle et en plan, une structure fixe d'un mouvement de montre portant un résonateur plan paraxial selon l'invention, comportant une masse suspendue par quatre lames flexibles formant des longs bras en spirale, autour d'un pivot virtuel ;
  • la figure 2 représente, sous forme d'un schéma-blocs, une montre comportant un mouvement intégrant un tel résonateur plan paraxial ;
  • la figure 3 illustre, de façon similaire à la figure 1, une variante avec deux masses intérieure l'une à l'autre et concentriques, et où, de part et d'autre de la masse la plus externe les longs bras sont enroulés en spirales de sens contraire ;
  • la figure 4 illustre, de façon similaire à la figure 3, une variante avec deux masses intérieure l'une à l'autre et concentriques, et où, de part et d'autre de la masse la plus externe les longs bras sont enroulés en spirales de même sens;
  • la figure 5 représente, de façon similaire à la figure 1, une structure fixe d'un mouvement de montre portant un résonateur plan paraxial selon l'invention, comportant une masse suspendue par quatre lames flexibles formant des longs bras à profil sinueux chacun de part et d'autre d'une radiale, autour d'un pivot virtuel.
Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which:
  • the figure 1 represents, schematically, partially and in plan, a fixed structure of a watch movement carrying a paraxial plane resonator according to the invention, comprising a mass suspended by four flexible blades forming long spiral arms, around a pivot virtual;
  • the figure 2 represents, in the form of a block diagram, a watch comprising a movement integrating such a paraxial plane resonator;
  • the figure 3 illustrates, similarly to the figure 1 , a variant with two masses inside each other and concentric, and where, on either side of the outermost mass the long arms are wound in spirals of opposite direction;
  • the figure 4 illustrates, similarly to the figure 3 , a variant with two masses inside each other and concentric, and where, on either side of the outermost mass, the long arms are wound in spirals of the same direction;
  • the figure 5 represents, similarly to the figure 1 , a fixed structure of a watch movement carrying a paraxial plane resonator according to the invention, comprising a mass suspended by four flexible blades forming long sinuous profile arms each on either side of a radial, around a virtual pivot.

Description détaillée des modes de réalisation préférésDetailed Description of the Preferred Embodiments

L'invention utilise, comme guidages flexibles, de très longs bras en spirale, pour éviter que les déplacements sur un premier axe X ne perturbent la force de rappel sur un deuxième axe Y orthogonal au premier axe X, et réciproquement.The invention uses, as flexible guides, very long spiral arms, to prevent displacements on a first axis X disturbing the restoring force on a second axis Y orthogonal to the first axis X, and vice versa.

Pour éviter que la rigidité angulaire soit trop faible, ce qui est susceptible d'entraîner des rotations parasites de la masse ou des masses du résonateur, on concentre la masse le plus près possible du centre, pour diminuer l'inertie, et donc augmenter la fréquence propre de rotation, ce qui évite toute excitation préjudiciable.To avoid the angular rigidity being too low, which is likely to cause parasitic rotations of the mass or masses of the resonator, concentrate the mass as close as possible to the center, to reduce the inertia, and therefore increase the frequency of rotation, which avoids any harmful excitation.

Différentes variantes, analogues aux différentes exécutions connues de spiraux de balancier, permettent d'améliorer l'isochronisme d'un tel résonateur.Different variants, similar to the various known embodiments of balance springs, make it possible to improve the isochronism of such a resonator.

On peut ainsi faire varier, de façon non limitative:

  • le nombre de tours de la spirale, y compris le nombre de tours fractionnaires ;
  • le pas de la spirale, qui peut être non constant, variable le long de la spirale ;
  • l'épaisseur de la spirale, qui peut être variable le long de la spirale, afin de rendre ce résonateur le plus isochrone possible (énergie potentielle parfaitement quadratique en x et y, donc proportionnelle à x2 + y2)
  • le nombre de bras en forme de spirale.
It is thus possible to vary, without limitation:
  • the number of turns of the spiral, including the number of fractional turns;
  • the pitch of the spiral, which can be non-constant, variable along the spiral;
  • the thickness of the spiral, which can be variable along the spiral, in order to make this resonator the most isochronous possible (potential energy perfectly quadratic in x and y, therefore proportional to x 2 + y 2 )
  • the number of spiral arms.

Les figures illustrent des exemples non limitatifs de réalisation de l'invention.The figures illustrate non-limiting examples of embodiment of the invention.

L'invention concerne un résonateur d'horlogerie 1 équipé, pour mouvement 100 de montre, comportant au moins une masse 2 reliée, par une pluralité de lames flexibles 3, 4, 5, 6, à des points d'accrochage 7, 8, 9, 10, d'une structure fixe 11 constituée par une platine d'un mouvement 100 ou agencée pour être fixée sur une telle platine, ladite au moins une masse 2 étant agencée pour être soumise à un couple ou/et un effort, ce résonateur 1 étant dit ici de type paraxial, c'est-à-dire agencé pour osciller avec au moins deux degrés de liberté en translation, et les lames flexibles 3, 4, 5, 6, étant agencées pour entretenir des oscillations de cette au moins une masse 2 autour d'un pivot virtuel w.The invention relates to a timepiece resonator 1 equipped, for watch movement 100, comprising at least one mass 2 connected by a plurality of flexible blades 3, 4, 5, 6, to gripping points 7, 8, 9, 10, of a fixed structure 11 constituted by a plate of a movement 100 or arranged to be fixed on such a plate, said at least one mass 2 being arranged to be subjected to a torque and / or effort, this resonator 1 being said here of paraxial type, that is to say arranged to oscillate with at least two degrees of freedom in translation, and the flexible blades 3, 4, 5, 6 being arranged to maintain oscillations of this at least one mass 2 around a virtual pivot w.

Ces lames flexibles 3, 4, 5, 6, comportent de longs bras, chacun de longueur au moins deux fois supérieure à la plus courte distance entre la masse 2 et les points d'accrochage 7, 8, 9, 10.These flexible blades 3, 4, 5, 6 comprise long arms, each of which is at least twice as long as the shortest distance between the mass 2 and the attachment points 7, 8, 9, 10.

Plus particulièrement, ces longs bras sont tous coplanaires, et leur longueur développée est supérieure à la circonférence de la masse 2 dans ce même plan qu'ils occupent.In particular, these long arms are all coplanar, and their developed length is greater than the circumference of the mass 2 in the same plane they occupy.

Dans une réalisation particulière selon les figures 1, 3, et 4, chacun de ces longs bras est enroulé en spirale autour de cette au moins une masse 2.In a particular embodiment according to figures 1 , 3, and 4 each of these long arms is spirally wound around this at least one mass 2.

Selon l'invention, le résonateur 1 est de type paraxial et comporte, d'une part des premières lames flexibles 4, 6, agencées pour entretenir des oscillations de ladite au moins une masse 2 autour d'un pivot virtuel w selon une première direction X, et d'autre part des deuxièmes lames flexibles 3, 5, agencées pour entretenir des oscillations de cette au moins une masse 2 autour du pivot virtuel w selon une deuxième direction Y orthogonale à la première direction X.According to the invention, the resonator 1 is of paraxial type and comprises, on the one hand, first flexible blades 4, 6, arranged to maintain oscillations of said at least one mass 2 around a virtual pivot w in a first direction X, and secondly flexible second blades 3, 5, arranged to maintain oscillations of this at least one mass 2 around the virtual pivot w in a second direction Y orthogonal to the first direction X.

Dans une variante particulière et préférée, chaque long bras constitue une spirale de plus d'un tour.In a particular and preferred embodiment, each long arm constitutes a spiral of more than one turn.

Dans une variante particulière, chaque long bras constitue une spirale comportant un nombre entier de tours auquel s'ajoute un demi-tour.In a particular variant, each long arm constitutes a spiral comprising an integer number of turns to which is added a half-turn.

Dans une variante particulière, chaque long bras est à profil sinueux de part et d'autre d'une radiale, issue du pivot virtuel w de la masse 2, et sans point de rebroussement.In a particular variant, each long arm is sinuously profiled on either side of a radial, resulting from the virtual pivot w of the mass 2, and without a cusp.

Dans une variante particulière chaque long bras a une longueur développée supérieure à la plus grande circonférence de la masse 2.In a particular embodiment, each long arm has a developed length greater than the largest circumference of the mass 2.

Dans une variante particulière, les premières lames flexibles 4, 6, sont identiques entre elles et symétriques par rapport au pivot virtuel w en l'absence d'excitation du résonateur 1, et les deuxièmes lames flexibles 3, 5, sont identiques entre elles et symétriques par rapport au pivot virtuel w en l'absence d'excitation du résonateur 1.In a particular variant, the first flexible blades 4, 6 are identical to each other and symmetrical with respect to the virtual pivot w in the absence of excitation of the resonator 1, and the second flexible blades 3, 5 are identical to each other and symmetrical with respect to the virtual pivot w in the absence of excitation of the resonator 1.

Dans une variante particulière, les premières lames flexibles 4, 6, et les deuxièmes lames flexibles 3, 5, sont toutes identiques.In a particular variant, the first flexible blades 4, 6, and the second flexible blades 3, 5 are all identical.

Dans une variante particulière, les premières lames flexibles 4, 6, sont en nombre pair, et les deuxièmes dites lames flexibles 3, 5, sont en nombre pair.In a particular variant, the first flexible blades 4, 6 are even in number, and the second so-called flexible blades 3, 5 are even in number.

Dans une variante particulière, les premières lames flexibles 4, 6, et les deuxièmes dites lames flexibles 3, 5, sont en nombre égal.In a particular variant, the first flexible blades 4, 6, and the second so-called flexible blades 3, 5, are in equal number.

Dans une variante particulière, les premières lames flexibles 4, 6, sont coplanaires entre elles et les deuxièmes lames flexibles 3, 5, sont coplanaires entre elles.In a particular variant, the first flexible blades 4, 6 are coplanar with each other and the second flexible blades 3, 5 are coplanar with each other.

Dans une variante particulière, le résonateur 1 est plan, et les lames flexibles 4, 6, et les deuxièmes lames flexibles 3, 5, sont toutes coplanaires entre elles.In a particular variant, the resonator 1 is plane, and the flexible blades 4, 6, and the second flexible blades 3, 5 are all coplanar with each other.

Dans une variante particulière, le pas de la spirale, est variable le long de la spirale pour chacune des premières lames flexibles 4, 6 et des deuxièmes lames flexibles 3, 5.In a particular variant, the pitch of the spiral is variable along the spiral for each of the first flexible blades 4, 6 and the second flexible blades 3, 5.

Dans une variante particulière, l'épaisseur de la spirale est variable le long de la spirale, pour chacune des premières lames flexibles 4, 6 et des deuxièmes lames flexibles 3, 5.In a particular variant, the thickness of the spiral is variable along the spiral, for each of the first flexible blades 4, 6 and the second flexible blades 3, 5.

Dans une variante particulière, la masse 2 est unique.In a particular variant, the mass 2 is unique.

Plus particulièrement, la masse 2 a un centre d'inertie confondu avec le pivot virtuel w en l'absence d'excitation du résonateur 1.More particularly, the mass 2 has a center of inertia coincides with the virtual pivot w in the absence of excitation of the resonator 1.

Dans une variante particulière, tel que visible sur la figure 3, le résonateur 1 comporte une pluralité de masses 2, 20, concentriques les unes aux autres autour du pivot virtuel ω, chaque plus interne des masses étant suspendue à la suivante par des premières lames flexibles 4, 6 et des deuxièmes lames flexibles 3, 5, et la plus externe des masses étant suspendue à la structure 11 par des premières lames flexibles 40, 60 et des deuxièmes lames flexibles 30, 50.In a particular variant, as visible on the figure 3 , the resonator 1 comprises a plurality of masses 2, 20, concentric with each other around the virtual pivot ω, each innermost of the masses being suspended to the next by first flexible blades 4, 6 and second flexible blades 3, 5 , and the outermost of the masses being suspended from the structure 11 by first flexible blades 40, 60 and second flexible blades 30, 50.

Plus particulièrement, tel que visible sur la figure 3, de part et d'autre d'au moins une telle masse 2, 20, les longs bras sont enroulés en spirales de sens contraire.More particularly, as visible on the figure 3 , on either side of at least one such mass 2, 20, the long arms are wound in spirals of opposite direction.

Plus particulièrement, tel que visible sur la figure 3, de part et d'autre d'au moins une telle masse 2, 20, les longs bras sont enroulés en spirales de même sens.More particularly, as visible on the figure 3 , on either side of at least one such mass 2, 20, the long arms are wound in spirals of the same direction.

Une réalisation particulière, tel que visible sur la figure 5, de résonateur 1 plan paraxial selon l'invention, comporte une masse 2 suspendue par quatre lames flexibles 3, 4, 5, 6, formant des longs bras à profil sinueux en forme de S, chacun de part et d'autre d'une radiale, Y+, X+, Y-, X-, depuis un pivot virtuel w de la masse 2, sans point de rebroussement.A particular achievement, as visible on the figure 5 , of 1 paraxial plane resonator according to the invention, comprises a mass 2 suspended by four flexible blades 3, 4, 5, 6, forming long S-shaped sinuous profile arms, each on either side of a radial, Y +, X +, Y-, X-, from a virtual pivot w of mass 2, without a cusp.

Dans une variante particulière et préférée, le résonateur 1 constitue un composant monobloc comportant la structure 11, la masse 2 ou les masses 2, 20, les premières lames flexibles 4, 6, et les deuxièmes lames flexibles 3, 5.In a particular and preferred variant, the resonator 1 constitutes a one-piece component comprising the structure 11, the mass 2 or the masses 2, 20, the first flexible blades 4, 6, and the second flexible blades 3, 5.

Dans une autre variante encore, le résonateur 1 comporte des lames flexibles réparties en superposition sur plusieurs plans, notamment sur plusieurs plans parallèles. Dans une réalisation particulière, des lames flexibles dans un premier plan tendent à imprimer un couple de rappel dans un premier sens, et des lames flexibles, attachées à la même masse, dans un deuxième plan tendent à imprimer un couple de rappel dans un deuxième sens contraire à ce premier sens.In yet another variant, the resonator 1 comprises flexible blades distributed in superposition on several planes, in particular in several parallel planes. In a particular embodiment, flexible blades in a first plane tend to print a return torque in a first direction, and flexible blades, attached to the same mass, in a second plane tend to print a return torque in a second direction contrary to this first sense.

Dans une variante plus élaborée, le résonateur 1 comporte encore un dispositif anti-choc et des moyens de limitation de couple, notamment fondés sur l'appui relatif des différents bras les uns sur les autres, ou encore des différents méandres que forme un même bras, dans l'exemple de la figure 5, les uns sur les autres..In a more elaborate variant, the resonator 1 further comprises an anti-shock device and torque limiting means, in particular based on the relative support of the different arms on each other, or the different meanders that form the same arm , in the example of the figure 5 , on each other ..

Plus particulièrement, ce résonateur 1 est en matériau micro-usinable ou en silicium ou en oxyde de silicium, ou similaire. Une couche d'oxyde permet notamment de dominer le problème de la compensation thermique.
De façon similaire, il peut être réalisé en quartz, ou similaire.More particularly, this resonator 1 is made of micro-machinable material or silicon or silicon oxide, or the like. In particular, an oxide layer makes it possible to overcome the problem of thermal compensation.
Similarly, it can be made of quartz, or the like.

L'invention concerne encore un mouvement d'horlogerie 100 comportant une platine supportant, directement ou indirectement par l'intermédiaire d'une structure fixe 11, au moins un tel résonateur 1.The invention also relates to a watch movement 100 comprising a plate supporting, directly or indirectly via a fixed structure 11, at least one such resonator 1.

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

Le résonateur 1 selon l'invention permet à la masse 2, qu'il comporte, d'adopter une trajectoire de translation curviligne, ou encore, plus particulièrement, de translation elliptique.The resonator 1 according to the invention allows the mass 2, which it comprises, to adopt a trajectory of curvilinear translation, or even more particularly, of elliptical translation.

Claims (23)

  1. Equipped timepiece resonator (1) for a watch movement (100), including at least one weight (2), connected by a plurality of flexible strips (3; 4; 5; 6), to one or more points of attachment (7; 8; 9; 10) of a fixed structure (11), formed by a plate of a said movement (100) or arranged to be secured to a said plate, said at least one weight (2) being arranged to be subjected to a torque and/or a force, said resonator (1) being arranged to oscillate with at least two degrees of freedom in translation, and said flexible strips (3; 4, 5; 6) being arranged to allow the oscillations of said at least one weight (2) about a virtual pivot (w), wherein said flexible strips (3; 4, 5; 6) include long arms, each of a length at least two times greater than the shortest distance between said weight (2) and said attachment points (7; 8; 9; 10), characterized in that resonator is of the paraxial type with at least two degrees of freedom in translation in a first direction (X), and in a second direction (Y) orthogonal to said first direction (X), and in that said flexible strips (3; 4, 5; 6) include, on the one hand, first said flexible strips (4, 6) arranged to allow oscillations of said at least one weight (2) about said virtual pivot (w) in said first direction (X), and on the other hand, second said flexible strips (3,5) arranged to allow oscillations of said at least one weight (2) about said virtual pivot (w) in said second direction (Y).
  2. Timepiece resonator (1) according to claim 1, characterized in that each said long arm is spirally wound about said at least one weight (2) and forms a spiral of more than one turn.
  3. Timepiece resonator (1) according to claim 2, characterized in that each said long arm forms a spiral including an integer number of turns to which a half-turn is added.
  4. Timepiece resonator (1) according to claim 1, characterized in that each said long arm has a sinuous profile on either side of a radial line, derived from said virtual pivot (ω) of said weight (2), and with no return-point.
  5. Timepiece resonator (1) according to any of the preceding claims, characterized in that said long arms each have a developed length greater than the largest circumference of said weight (2).
  6. Timepiece resonator (1) according to any of the preceding claims, characterized in that said first flexible strips (4, 6) are identical to each other and symmetrical with respect to said virtual pivot (w) in the absence of excitation of said resonator (1), and in that said second flexible strips (3, 5) are identical to each other and symmetrical with respect to said virtual pivot (w) in the absence of excitation of said resonator (1).
  7. Timepiece resonator (1) according to any of the preceding claims, characterized in that said first flexible strips (4, 6) and said second flexible strips (3, 5) are all identical.
  8. Timepiece resonator (1) according to any of the preceding claims, characterized in that there is an even number of said first flexible strips (4, 6), and in that there is an even number of said second flexible strips (3, 5).
  9. Timepiece resonator (1) according to the preceding claim, characterized in that there is an equal number of said first flexible strips (4, 6) and said second flexible strips (3, 5).
  10. Timepiece resonator (1) according to any of the preceding claims, characterized in that the pitch of said spiral varies along said spiral for each of said first flexible strips (4, 6) and each of said second flexible strips (3, 5).
  11. Timepiece resonator (1) according to any of the preceding claims, characterized in that the thickness of said spiral varies along said spiral, for each of said first flexible strips (4, 6) and each of said second flexible strips (3, 5).
  12. Timepiece resonator (1) according to any of the preceding claims, characterized in that said first flexible strips (4, 6) are coplanar with each other and in that said second flexible strips (3, 5) are coplanar with each other.
  13. Timepiece resonator (1) according to the preceding claim, characterized in that said resonator (1) is plane, and in that said first flexible strips (4, 6) and said second flexible strips (3, 5) are all coplanar with each other.
  14. Timepiece resonator (1) according to any of claims 1 to 11, characterized in that said resonator (1) includes said flexible strips (3; 4; 5; 6) arranged in superposition on several parallel planes.
  15. Timepiece resonator (1) according to the preceding claim, characterized in that said flexible strips in a first plane tend to impart a restoring torque in a first direction, and in that said flexible strips, attached to the same weight, in a second plane, tend to impart a restoring torque in a second direction opposite to said first direction.
  16. Timepiece resonator (1) according to any of the preceding claims, characterized in that there is only one said weight (2).
  17. Timepiece resonator (1) according to the preceding claim, characterized in that the centre of inertia of said weight (2) coincides with said virtual pivot (w) in the absence of excitation of said resonator (1).
  18. Timepiece resonator (1) according to any of claims 1 to 15, characterized in that said resonator includes a plurality of said weights (2, 20) concentric with each other about said virtual pivot (w), each innermost weight of said weights being suspended from the next by said first flexible strips (4, 6) and said second flexible strips (3, 5), and the outermost of said weights being suspended from said structure (11) by said first flexible strips (40, 60) and said second flexible strips (30, 50).
  19. Timepiece resonator (1) according to the preceding claim, characterized in that, on both sides of at least one said weight (2; 20), said long arms are spirally wound in opposite directions.
  20. Timepiece resonator (1) according to any of the preceding claims, characterized in that the resonator forms a one-piece component including said structure (11), said weight (2) or said weights (2; 20), said first flexible strips (4, 6) and said second flexible strips (3, 5).
  21. Timepiece resonator (1) according to the preceding claim, characterized in that the resonator is made of micromachinable material or silicon or silicon oxide.
  22. Timepiece movement (100) including a plate that supports, directly, or indirectly by means of a fixed structure (11), at least one resonator (1) according to any of the preceding claims.
  23. Watch (200) including a movement (100) according to the preceding claim.
EP14186657.4A 2014-09-26 2014-09-26 Paraxial, isochronous timepiece resonator Active EP3001257B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP14186657.4A EP3001257B1 (en) 2014-09-26 2014-09-26 Paraxial, isochronous timepiece resonator
CH01460/14A CH710188A2 (en) 2014-09-26 2014-09-26 Resonator paraxial and isochronous watchmaking.
JP2015183560A JP6154864B2 (en) 2014-09-26 2015-09-17 Isochronous paraxial timer resonator
US14/863,513 US9429916B2 (en) 2014-09-26 2015-09-24 Isochronous paraxial timepiece resonator
CN201510622746.0A CN105467810B (en) 2014-09-26 2015-09-25 Deng when it is paraxial when count resonator
RU2015140956A RU2695518C2 (en) 2014-09-26 2015-09-25 Isochronous paraxial clock resonator
HK16111306.8A HK1223163A1 (en) 2014-09-26 2016-09-27 Isochronous paraxial timepiece resonator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14186657.4A EP3001257B1 (en) 2014-09-26 2014-09-26 Paraxial, isochronous timepiece resonator

Publications (2)

Publication Number Publication Date
EP3001257A1 EP3001257A1 (en) 2016-03-30
EP3001257B1 true EP3001257B1 (en) 2018-01-17

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EP14186657.4A Active EP3001257B1 (en) 2014-09-26 2014-09-26 Paraxial, isochronous timepiece resonator

Country Status (7)

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US (1) US9429916B2 (en)
EP (1) EP3001257B1 (en)
JP (1) JP6154864B2 (en)
CN (1) CN105467810B (en)
CH (1) CH710188A2 (en)
HK (1) HK1223163A1 (en)
RU (1) RU2695518C2 (en)

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US11520292B2 (en) 2018-12-13 2022-12-06 Eta Sa Manufacture Horlogere Suisse Timepiece resonator comprising at least one flexure bearing

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EP3147725B1 (en) * 2015-09-28 2018-04-04 Nivarox-FAR S.A. Oscillator with rotary detent
CH713151B1 (en) * 2016-11-23 2020-09-30 Swatch Group Res & Dev Ltd Flexible blade for watchmaking, and manufacturing process.
EP3336613B1 (en) * 2016-12-16 2020-03-11 Association Suisse pour la Recherche Horlogère Timepiece resonator with two balances arranged to oscillate in a single plane
EP3580618B1 (en) 2017-02-13 2022-01-26 Patek Philippe SA Genève Timepiece driving organ
EP3561606B1 (en) * 2018-04-27 2022-01-26 The Swatch Group Research and Development Ltd Shock protection of a leaf spring resonator with rcc pivot
EP4248278A1 (en) * 2020-11-17 2023-09-27 Patek Philippe SA Genève Timepiece member comprising at least one spring leaf

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RU2015140956A (en) 2017-03-30
US9429916B2 (en) 2016-08-30
EP3001257A1 (en) 2016-03-30
RU2695518C2 (en) 2019-07-23
US20160091862A1 (en) 2016-03-31
HK1223163A1 (en) 2017-07-21
JP6154864B2 (en) 2017-06-28
JP2016070928A (en) 2016-05-09
CN105467810A (en) 2016-04-06
RU2015140956A3 (en) 2019-03-28
CN105467810B (en) 2017-11-28
CH710188A2 (en) 2016-03-31

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