EP1843227A1 - Coupled resonator for control system - Google Patents

Coupled resonator for control system Download PDF

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Publication number
EP1843227A1
EP1843227A1 EP06007397A EP06007397A EP1843227A1 EP 1843227 A1 EP1843227 A1 EP 1843227A1 EP 06007397 A EP06007397 A EP 06007397A EP 06007397 A EP06007397 A EP 06007397A EP 1843227 A1 EP1843227 A1 EP 1843227A1
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EP
European Patent Office
Prior art keywords
resonator
coupled resonator
tuning fork
frequency
coupled
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.)
Withdrawn
Application number
EP06007397A
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German (de)
French (fr)
Inventor
Thierry Hessler
Kaspar Trümpy
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.)
Swatch Group Research and Development SA
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Swatch Group Research and Development 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.)
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Publication date
Application filed by Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP06007397A priority Critical patent/EP1843227A1/en
Priority to JP2009504691A priority patent/JP4982556B2/en
Priority to US12/294,652 priority patent/US7889028B2/en
Priority to TW096111911A priority patent/TW200746628A/en
Priority to AT07727747T priority patent/ATE472756T1/en
Priority to CN2007800120730A priority patent/CN101416127B/en
Priority to DE602007007462T priority patent/DE602007007462D1/en
Priority to KR1020087027085A priority patent/KR20080111523A/en
Priority to EP07727747A priority patent/EP2008160B1/en
Priority to PCT/EP2007/053276 priority patent/WO2007115985A1/en
Publication of EP1843227A1 publication Critical patent/EP1843227A1/en
Priority to HK09109548.9A priority patent/HK1131446A1/en
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C5/00—Electric or magnetic means for converting oscillatory to rotary motion in time-pieces, i.e. electric or magnetic escapements
    • G—PHYSICS
    • G04—HOROLOGY
    • 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
    • G04B17/066—Manufacture of the spiral spring

Definitions

  • the present invention relates to a coupled resonator for a control system, that is to say an assembly formed of two oscillators whose coupling makes it possible to stabilize a frequency and thus to make it more independent of external stresses.
  • the invention will be more particularly illustrated by the regulating system of a clockwork mechanical movement for which isochronism is a quality factor.
  • the present invention therefore aims to overcome the disadvantages of the aforementioned prior art by providing a coupled resonator of simpler and more reliable design.
  • the invention relates to a coupled resonator comprising a first low frequency resonator for example of the order of a few hertz and a second resonator at higher frequency, for example of the order of one kilohertz.
  • the invention is characterized in that the first resonator and the second resonator comprise permanent mechanical coupling means, said coupling making it possible to stabilize the frequency in the event of external disturbances, for example in the event of shocks.
  • the two resonators can be manufactured separately from identical or different materials, and then mechanically assembled by any means known to those skilled in the art, such as bonding, riveting, welding or interlocking.
  • Both resonators can also be made in one piece in a single material.
  • the materials used must have a certain elastic constant and may, for example, be chosen from metals or alloys, or amorphous, monocrystalline or polycrystalline materials, such as glass, quartz and silicon or its derivatives.
  • the invention will be more particularly illustrated by a coupled resonator formed by a hairspring and a tuning fork, such a resonator being able to be integrated in the regulating system of a timepiece, in particular a wristwatch capable of receiving shocks.
  • the invention will be more particularly illustrated by the coupled resonator shown in Figure 1 to maintain the isochronism of a mechanical watch movement.
  • the hairspring 1 basically comprises a first resonator consisting of a hairspring 1 typically having a frequency of the order of a few hertz and a second resonator consisting of a tuning fork 2 typically having a frequency of the order of one kilohertz.
  • the curve inside 3 of the hairspring 1 is fixed in a conventional manner on a ferrule 5 for securing to a balance shaft and the tuning fork 2 also includes two arms 4, 6 connected by a foot 8.
  • foot 8 of the tuning fork 2 is fixed in known manner to a fixed part of the watch movement, such as the rooster.
  • the hairspring 1 and the tuning fork 2 are mechanically connected permanently.
  • the arm 6 of the tuning fork 2 is extended by the curve on the outside 7 of the hairspring 1.
  • the two resonators are made in one piece, by known techniques that depend on the materials used. These materials are obviously materials having a certain elastic constant "k”. such as metals and alloys, or amorphous materials, monocrystalline or polycrystalline, such as glass, quartz, silicon or its derivatives.
  • This basic embodiment will further illustrate an example of how such coupling has a favorable effect on the stabilization of the frequency.
  • the first resonator namely the hairspring 1
  • the second resonator namely the tuning fork 2
  • the arm 6 of the tuning fork 2 comprises a notch 10 in which the end of the curve outside the spiral 7 is engaged, possibly completing the mechanical connection by gluing.
  • the foot 8 of the tuning fork 2 further comprises a constriction 12 for fixing to a fixed part of the watch movement, and which can influence the coupling constant "k c " between the two resonators.
  • FIG. 3 represents other variants allowing a great freedom to adjust the coupling constant "k c " between the first and second resonators.
  • the foot 8 may comprise material recesses which will make it possible to modify the coupling constant "k c ".
  • These recesses 14 may for example be made by laser ablation. They could also be done on any other part of the tuning fork 2, in particular on the free arm 4 to modify the mass "m” and therefore the natural frequency of the tuning fork, Conversely, according to an embodiment not shown, it would be possible to add mass to a any place of the second resonator.
  • FIG. 3 also shows another variant, which can be combined with the preceding variant, to modify the natural frequency of the first resonator.
  • the free arm 4 comprises in fact a counterweight 16, movable on said arm 4 and can be immobilized at a determined location, for example by means of a clamping screw 18.
  • the tuning fork 2 when the tuning fork 2 is made of quartz along crystallographic axes for obtaining a piezoelectric effect, electrodes may be provided on the arms 4, 6 to generate electrical energy. In the case of a wristwatch this energy may for example be used to illuminate the dial.
  • the value of the coupling constant "kc" depends on the shape of the foot that joins the two resonators.
  • This coupling frequency k c was varied between the values 1.10 -8 and 1.10 4 and represented in FIG. 4 with a logarithmic scale the natural frequencies of the coupled system.
  • the highest frequency f 2 is practically unaffected by the variation of the coupling coefficient k c , while an increase of the lowest frequency f 1 is observed for the weakest couplings that is, those that are most relevant to this application.
  • the graph of FIG. 5 corresponds, as a function of a variation of the coupling coefficient k c within the limits indicated above, to a perturbation study on the first resonator, for example due to a shock, ie to a comparing the effect of the perturbation on a frequency variation of the first resonator when it is alone and when it is coupled with the second resonator, which is assumed to be stable.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Electric Clocks (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

The resonator has a low frequency hairspring (1) and a high frequency tuning fork (2) connected mechanically in a permanent manner. The hairspring and the tuning fork are made of identical or different material e.g. metal, alloy or amorphous material, monocrystaline or polycrystalline material such as glass, quartz and silicon. The tuning fork comprising two arms (4, 6) that are connected by a steady pin (8).

Description

Domaine techniqueTechnical area

La présente invention concerne un résonateur couplé pour un système réglant, c'est-à-dire un ensemble formé de deux oscillateurs dont le couplage permet de stabiliser une fréquence et donc de la rendre plus indépendante des sollicitations extérieures. L'invention sera plus particulièrement illustrée par le système réglant d'un mouvement mécanique horloger pour lequel l'isochronisme est un facteur de qualité.The present invention relates to a coupled resonator for a control system, that is to say an assembly formed of two oscillators whose coupling makes it possible to stabilize a frequency and thus to make it more independent of external stresses. The invention will be more particularly illustrated by the regulating system of a clockwork mechanical movement for which isochronism is a quality factor.

Arrière plan technologiqueTechnological background

Pour stabiliser la fréquence d'un système réglant balancier-spiral, de nombreux dispositif ont déjà été proposés. Le brevet GB 1 138 818 publié en 1967 décrit un dispositif de couplage dans lequel les alternances d'un premier oscillateur viennent exciter par chocs un diapason, c'est-à-dire sans liaison mécanique directe. Les dispositifs de régulation plus récents reposent essentiellement sur des dispositifs associant un régulateur mécanique, tel qu'un balancier-spiral, associé par un couplage électromagnétique à un régulateur électronique, ledit couplage étant essentiellement effectué au moyen d'aimants disposés dans les bras ou dans la serge de balancier. Un tel dispositif a, par exemple, été décrit dans le brevet US 3 937 001 . De nombreux perfectionnements ont été apportés à ce dispositif de base, essentiellement au niveau de la conception ou de l'agencement des aimants, du circuit électronique et du deuxième résonateur, ainsi qu'au niveau de la source d'énergie nécessaire pour alimenter ledit circuit électronique. De tels perfectionnements sont par exemple décrit dans les brevets EP 0 679 968 , EP 0 732 243 , EP 0 806 710 , EP 0 822 470 , EP 0 848 306 , EP 0 935 177 et EP 1 521 141 .To stabilize the frequency of a balance sprung balance system, many devices have already been proposed. The patent GB 1 138 818 published in 1967 describes a coupling device in which the alternations of a first oscillator excite by shock a tuning fork, that is to say without direct mechanical connection. The newer regulating devices essentially rely on devices associating a mechanical regulator, such as a sprung balance, associated by an electromagnetic coupling to an electronic regulator, said coupling being essentially carried out by means of magnets arranged in the arms or in the balance serge. Such a device has, for example, been described in the patent US 3,937,001 . Numerous improvements have been made to this basic device, essentially in terms of the design or arrangement of the magnets, the electronic circuit and the second resonator, as well as at the level of the energy source necessary to supply said circuit electronic. Such improvements are for example described in the patents EP 0 679 968 , EP 0 732 243 , EP 0 806 710 , EP 0 822 470 , EP 0 848 306 , EP 0 935 177 and EP 1,521,141 .

Tous ces dispositifs de couplage ont l'inconvénient, soit d'être peu fiables, soit d'exiger l'assemblage d'un grand nombre de composants dont les fonctions propres doivent être ajustées les unes par rapport aux autres, ce qui contribue finalement à augmenter fortement le coût du produit final.All these coupling devices have the disadvantage of either being unreliable or requiring the assembly of a large number of components whose eigenfunctions must be adjusted relative to each other, which finally contributes to greatly increase the cost of the final product.

Résumé de l'inventionSummary of the invention

La présente invention vise donc à palier les inconvénients de l'art antérieur précité en procurant un résonateur couplé de conception plus simple et plus fiable.The present invention therefore aims to overcome the disadvantages of the aforementioned prior art by providing a coupled resonator of simpler and more reliable design.

A cet effet l'invention concerne un résonateur couplé comportant un premier résonateur à basse fréquence par exemple de l'ordre de quelques hertz et un deuxième résonateur à plus haute fréquence, par exemple de l'ordre du kilohertz. L'invention est caractérisée en ce que le premier résonateur et le deuxième résonateur comportent des moyens de couplage mécanique permanent, ledit couplage permettant de stabiliser la fréquence en cas de perturbations extérieures, par exemple en cas de chocs.For this purpose the invention relates to a coupled resonator comprising a first low frequency resonator for example of the order of a few hertz and a second resonator at higher frequency, for example of the order of one kilohertz. The invention is characterized in that the first resonator and the second resonator comprise permanent mechanical coupling means, said coupling making it possible to stabilize the frequency in the event of external disturbances, for example in the event of shocks.

Les deux résonateurs peuvent être fabriqués séparément en des matériaux identiques ou différents, puis assemblés mécaniquement par tout moyen connu de l'homme de l'art, tel que le collage, le rivetage, le soudage ou l'emboîtement.The two resonators can be manufactured separately from identical or different materials, and then mechanically assembled by any means known to those skilled in the art, such as bonding, riveting, welding or interlocking.

Les deux résonateurs peuvent également être fabriqués en une seule pièce dans un unique matériau.Both resonators can also be made in one piece in a single material.

Les matériaux utilisés doivent avoir une certaine constante élastique et peuvent par exemple être choisis parmi les métaux ou alliage, ou les matériaux amorphes, monocristallins ou polycristallins, tels que le verre, le quartz et le silicium ou ses dérivés.The materials used must have a certain elastic constant and may, for example, be chosen from metals or alloys, or amorphous, monocrystalline or polycrystalline materials, such as glass, quartz and silicon or its derivatives.

L'invention sera plus particulièrement illustrée par un résonateur couplé formé par un spiral et un diapason, un tel résonateur pouvant être intégré dans le système réglant d'une pièce d'horlogerie, en particulier une montre bracelet susceptible de recevoir des chocs.The invention will be more particularly illustrated by a coupled resonator formed by a hairspring and a tuning fork, such a resonator being able to be integrated in the regulating system of a timepiece, in particular a wristwatch capable of receiving shocks.

Brève description des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de la présente invention apparaîtront dans la description suivante d'un exemple de réalisation, concernant le système réglant d'un mouvement horloger mécanique, donné à titre illustratif et non limitatif, en référence aux dessins annexés, dans lesquels:

  • la figure 1 représente un premier mode de réalisation;
  • la figure 2 est une représentation partielle d'un deuxième mode de réalisation;
  • la figure 3 est une représentation partielle d'un troisième mode de réalisation;
  • la figure 4 correspond à un graphe représentant les fréquences propres du système couplé, et
  • la figure 5 correspond à un graphe montrant l'influence du couplage sur la stabilisation de la fréquence.
Other features and advantages of the present invention will become apparent in the following description of an exemplary embodiment, concerning the control system of a mechanical clockwork movement, given by way of illustration and without limitation, with reference to the appended drawings, in which:
  • Figure 1 shows a first embodiment;
  • Figure 2 is a partial representation of a second embodiment;
  • Figure 3 is a partial representation of a third embodiment;
  • FIG. 4 corresponds to a graph representing the eigenfrequencies of the coupled system, and
  • Figure 5 corresponds to a graph showing the influence of the coupling on the stabilization of the frequency.

Description détaillée de l'inventionDetailed description of the invention

L'invention sera plus particulièrement illustrée par le résonateur couplé représenté à la figure 1 pour maintenir l'isochronisme d'un mouvement mécanique horloger.The invention will be more particularly illustrated by the coupled resonator shown in Figure 1 to maintain the isochronism of a mechanical watch movement.

Il comporte fondamentalement un premier résonateur constitué par un spiral 1 ayant typiquement une fréquence de l'ordre de quelques hertz et un deuxième résonateur constitué par un diapason 2 ayant typiquement une fréquence de l'ordre du kilohertz. La courbe à l'intérieur 3 du spiral 1 est fixée de façon classique sur une virole 5 pour l'assujettissement à un axe de balancier et le diapason 2 comporte, de façon également connue deux bras 4, 6 reliés par un pied 8. Le pied 8 du diapason 2 est fixé de façon connue à une pièce fixe du mouvement horloger, tel que le coq.It basically comprises a first resonator consisting of a hairspring 1 typically having a frequency of the order of a few hertz and a second resonator consisting of a tuning fork 2 typically having a frequency of the order of one kilohertz. The curve inside 3 of the hairspring 1 is fixed in a conventional manner on a ferrule 5 for securing to a balance shaft and the tuning fork 2 also includes two arms 4, 6 connected by a foot 8. foot 8 of the tuning fork 2 is fixed in known manner to a fixed part of the watch movement, such as the rooster.

Comme on peut le voir, le spiral 1 et le diapason 2 sont reliés mécaniquement en permanence. Dans ce mode de réalisation le bras 6 du diapason 2 est prolongé par la courbe à l'extérieur 7 du spiral 1.As can be seen, the hairspring 1 and the tuning fork 2 are mechanically connected permanently. In this embodiment, the arm 6 of the tuning fork 2 is extended by the curve on the outside 7 of the hairspring 1.

En d'autres termes, les deux résonateurs sont réalisés en une seule pièce, par des techniques connues qui dépendent des matériaux utilisés. Ces matériaux sont évidemment des matériaux ayant une certaine constante élastique "k". tels que les métaux et alliages, ou les matériaux amorphes, monocristallins ou polycristallins, tels que le verre, le quartz, le silicium ou ses dérivés.In other words, the two resonators are made in one piece, by known techniques that depend on the materials used. These materials are obviously materials having a certain elastic constant "k". such as metals and alloys, or amorphous materials, monocrystalline or polycrystalline, such as glass, quartz, silicon or its derivatives.

Les techniques de conformation de ces matériaux par étampage, technique LIGA, gravage, photolithographie, ou autres sont bien connues de l'homme de l'art et ne seront donc pas davantage décrites.The techniques of conformation of these materials by stamping, LIGA technique, etching, photolithography, or others are well known to those skilled in the art and will therefore not be further described.

Ce mode de réalisation de base fera plus loin l'objet d'un exemple montrant comment un tel couplage a un effet favorable sur la stabilisation de la fréquence.This basic embodiment will further illustrate an example of how such coupling has a favorable effect on the stabilization of the frequency.

En se référant maintenant à la figure 2, on a représenté une variante de réalisation. Cette variante diffère du mode de réalisation précédent en ce que le premier résonateur, à savoir le spiral 1, et le deuxième résonateur, à savoir le diapason 2, sont initialement deux pièces indépendantes pouvant être réalisées dans des matériaux différents. Entre ces deux pièces, il est créé une liaison mécanique. Dans l'exemple représenté, le bras 6 du diapason 2 comporte une encoche 10 dans laquelle on engage l'extrémité de la courbe à l'extérieur 7 du spiral, en complétant éventuellement la liaison mécanique par collage. D'autres modes de liaison mécanique, bien connus de l'homme de l'art, sont évidemment possibles. Dans le mode de réalisation représenté, le pied 8 du diapason 2 comporte en outre un rétrécissement 12 permettant la fixation à une partie fixe du mouvement horloger, et pouvant influencer la constante de couplage "kc" entre les deux résonateurs.Referring now to Figure 2, there is shown an alternative embodiment. This variant differs from the previous embodiment in that the first resonator, namely the hairspring 1, and the second resonator, namely the tuning fork 2, are initially two independent parts that can be made of different materials. Between these two parts, a mechanical connection is created. In the example shown, the arm 6 of the tuning fork 2 comprises a notch 10 in which the end of the curve outside the spiral 7 is engaged, possibly completing the mechanical connection by gluing. Other modes of mechanical connection, well known to those skilled in the art, are obviously possible. In the embodiment shown, the foot 8 of the tuning fork 2 further comprises a constriction 12 for fixing to a fixed part of the watch movement, and which can influence the coupling constant "k c " between the two resonators.

La figure 3 représente d'autres variantes permettant d'avoir une grande liberté pour ajuster la constante de couplage "kc" entre le premier et le deuxième résonateur. Comme on peut le voir, le pied 8 peut comporter des évidements de matière qui vont permettre de modifier la constante de couplage "kc". Ces évidements 14 peuvent par exemple être effectués par ablation laser. Ils pourraient également être effectués sur toute autre partie du diapason 2, notamment sur le bras libre 4 pour en modifier la masse "m" et donc la fréquence propre du diapason, Inversement, selon un mode de réalisation non représenté, il serait possible d'ajouter de la masse en un endroit quelconque du deuxième résonateur.FIG. 3 represents other variants allowing a great freedom to adjust the coupling constant "k c " between the first and second resonators. As can be seen, the foot 8 may comprise material recesses which will make it possible to modify the coupling constant "k c ". These recesses 14 may for example be made by laser ablation. They could also be done on any other part of the tuning fork 2, in particular on the free arm 4 to modify the mass "m" and therefore the natural frequency of the tuning fork, Conversely, according to an embodiment not shown, it would be possible to add mass to a any place of the second resonator.

La figure 3 montre également une autre variante, qui peut être combinée avec la variante précédente, pour modifier la fréquence propre du premier résonateur. Le bras libre 4 comporte en effet une masselotte 16, mobile sur ledit bras 4 et pouvant être immobilisée en un endroit déterminé, par exemple au moyen d'une vis de serrage 18.FIG. 3 also shows another variant, which can be combined with the preceding variant, to modify the natural frequency of the first resonator. The free arm 4 comprises in fact a counterweight 16, movable on said arm 4 and can be immobilized at a determined location, for example by means of a clamping screw 18.

Selon encore une autre variante non représentée, lorsque le diapason 2 est réalisé en quartz selon des axes cristallographiques permettant d'obtenir un effet piézoélectrique, des électrodes peuvent être prévues sur les bras 4, 6 pour générer de l'énergie électrique. Dans le cas d'une montre bracelet cette énergie pourra par exemple être utilisée pour éclairer le cadran.According to another variant not shown, when the tuning fork 2 is made of quartz along crystallographic axes for obtaining a piezoelectric effect, electrodes may be provided on the arms 4, 6 to generate electrical energy. In the case of a wristwatch this energy may for example be used to illuminate the dial.

En se référant maintenant aux figures 4 et 5, on donne ci-après un exemple correspondant à un résonateur couplé selon le mode de réalisation représenté à la figure 1. Le spiral utilisé a une constante élastique k1 = 1.10-6 N.m/Rd et une masse d'inertie m1 = 16.10-10 kg, ce qui correspond à une fréquence propre f1 = 3,979 Hz. Le diapason, dont le bras libre a une longueur de 10 mm et une largeur de 50 µm a une constante élastique k2 = 1,26 N/m et une masse d'inertie m2 = 1,6.10-7 kg, ce qui correspond à une fréquence propre f2 = 446,627 Hz. Lorsque les deux résonateurs sont couplés de façon mécanique, la valeur de la constante de couplage "kc" dépend de la forme du pied qui joint les deux résonateurs. On a fait varier cette fréquence de couplage kc entre les valeurs 1.10-8 et 1.104 et représenté à la figure 4 avec une échelle logarithmique les fréquences propres du système couplé. Comme on peut le voir, la fréquence f2 la plus haute n'est pratiquement pas influencée par la variation du coefficient de couplage kc, alors qu'on observe une augmentation de la fréquence la plus basse f1 pour les couplages les plus faibles, c'est à dire ceux qui présentent le plus d'intérêt dans le cadre de la présente application.Referring now to FIGS. 4 and 5, an example corresponding to a coupled resonator according to the embodiment shown in FIG. 1 is given below. The hairspring used has an elastic constant k 1 = 1.10 -6 Nm / Rd and a mass of inertia m 1 = 16.10 -10 kg, which corresponds to an eigenfrequency f 1 = 3.979 Hz. The tuning fork, whose free arm has a length of 10 mm and a width of 50 μm has an elastic constant k 2 = 1.26 N / m and a mass of inertia m 2 = 1.6 × 10 -7 kg, which corresponds to a natural frequency f 2 = 446.627 Hz. When the two resonators are mechanically coupled, the value of the coupling constant "kc" depends on the shape of the foot that joins the two resonators. This coupling frequency k c was varied between the values 1.10 -8 and 1.10 4 and represented in FIG. 4 with a logarithmic scale the natural frequencies of the coupled system. As can be seen, the highest frequency f 2 is practically unaffected by the variation of the coupling coefficient k c , while an increase of the lowest frequency f 1 is observed for the weakest couplings that is, those that are most relevant to this application.

Le graphe de la figure 5 correspond, en fonction d'une variation du coefficient du couplage kc dans les limites sus-indiquées, à une étude de perturbation sur le premier résonateur par exemple due à un choc, c'est à dire à une comparaison de l'effet de la perturbation sur une variation de fréquence du premier résonateur lorsqu'il est seul et lorsqu'il est couplé avec le deuxième résonateur, supposé stable.The graph of FIG. 5 corresponds, as a function of a variation of the coupling coefficient k c within the limits indicated above, to a perturbation study on the first resonator, for example due to a shock, ie to a comparing the effect of the perturbation on a frequency variation of the first resonator when it is alone and when it is coupled with the second resonator, which is assumed to be stable.

Comme on peut le voir, pour un coefficient de couplage kc = 1.10-5 on obtient une stabilisation de l'ordre de 70%, ce qui montre l'intérêt d'un résonateur couplé selon l'invention pour stabiliser la fréquence, par exemple celle du système réglant d'une pièce d'horlogerie, par une conception simple et relativement moins coûteuse.As can be seen, for a coupling coefficient k c = 1.10 -5 a stabilization of the order of 70% is obtained, which shows the interest of a coupled resonator according to the invention to stabilize the frequency, for example that of the timing system of a timepiece, by a simple and relatively less expensive design.

Claims (10)

Résonateur couplé comportant un premier résonateur à basse fréquence et un deuxième résonateur à plus haute fréquence, caractérisé en ce que le premier résonateur et le deuxième résonateur comportent des moyens de couplage mécanique permanents.Coupled resonator comprising a first low frequency resonator and a second higher frequency resonator, characterized in that the first resonator and the second resonator comprise permanent mechanical coupling means. Résonateur couplé selon la revendication 1, caractérisé en ce que le premier et le deuxième résonateur sont réalisés en des matériaux identiques ou différents en étant assemblés par collage, rivetage, soudage, emboîtement ou autre.Coupled resonator according to claim 1, characterized in that the first and second resonators are made of identical or different materials being assembled by gluing, riveting, welding, interlocking or other. Résonateur couplé selon la revendication 1, caractérisé en ce que le premier et le deuxième résonateur viennent de matière avec un même matériau.Coupled resonator according to claim 1, characterized in that the first and second resonators are made of material with the same material. Résonateur couplé selon les revendications 2 ou 3, caractérisé en ce que les matériaux utilisés pour les premier et deuxième résonateurs sont choisis parmi les métaux ou alliages, ou les matériaux amorphes, monocristallins ou polycristallins, tels que le verre, le quartz et le silicium ou ses dérivés.Coupled resonator according to Claim 2 or 3, characterized in that the materials used for the first and second resonators are chosen from metals or alloys, or amorphous, monocrystalline or polycrystalline materials, such as glass, quartz and silicon, or its derivatives. Résonateur couplé selon la revendication 1, caractérisé en ce que le premier résonateur est un spiral (1) et en ce que le deuxième résonateur est un diapason (2) comportant deux bras (4, 6) reliés par un pied, l'un des bras (6) étant solidaire de la courbe à l'extérieur (7) du spiral (1) et l'autre bras (4) étant libre.Coupled resonator according to Claim 1, characterized in that the first resonator is a spiral (1) and in that the second resonator is a tuning fork (2) comprising two arms (4, 6) connected by a foot, one of arm (6) being integral with the curve on the outside (7) of the hairspring (1) and the other arm (4) being free. Résonateur couplé selon la revendication 5, caractérisé en ce que le bras libre (4) du diapason (2) comporte en outre une masselotte (16) pouvant être déplacée pour modifier sa fréquence propre et ajuster ainsi la fréquence du résonateur couplé.Coupled resonator according to claim 5, characterized in that the free arm (4) of the tuning fork (2) further comprises a flyweight (16) movable to modify its natural frequency and thus adjust the frequency of the coupled resonator. Résonateur couplé selon la revendication 5, caractérisé en ce que le bras libre (4) du diapason (2) comporte en outre des zones (14) facilement usinables permettant de modifier sa fréquence propre et ajuster ainsi la fréquence du résonateur couplé,Coupled resonator according to claim 5, characterized in that the free arm (4) of the tuning fork (2) further comprises easily machinable zones (14) making it possible to modify its natural frequency and thus adjust the frequency of the coupled resonator, Résonateur couplé selon la revendication 1, caractérisé en ce que le premier résonateur a une fréquence propre de l'ordre de quelques hertz et le deuxième résonateur une fréquence propre de l'ordre du kilohertz.Coupled resonator according to Claim 1, characterized in that the first resonator has a natural frequency of the order of a few hertz and the second resonator has a natural frequency of the order of one kilohertz. Résonateur couplé selon la revendication 4, caractérisé en ce que, lorsque le matériau est le quartz et lorsque la conformation dudit résonateur a été effectuée selon les orientations cristallographiques permettant d'obtenir un effet piézoélectrique, les bras (4, 6) du diapason (2) comportent en outre des électrodes permettant de générer de l'énergie électrique.Coupled resonator according to Claim 4, characterized in that , when the material is quartz and when the conformation of said resonator has been carried out according to the crystallographic orientations making it possible to obtain a piezoelectric effect, the arms (4, 6) of the tuning fork (2 ) further comprise electrodes for generating electrical energy. Pièce d'horlogerie à mouvement mécanique, caractérisée en ce qu'elle comporte comme système réglant un résonateur couplé selon une quelconque des revendications précédentes.Timepiece with mechanical movement, characterized in that it comprises as a system adjusting a coupled resonator according to any one of the preceding claims.
EP06007397A 2006-04-07 2006-04-07 Coupled resonator for control system Withdrawn EP1843227A1 (en)

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EP06007397A EP1843227A1 (en) 2006-04-07 2006-04-07 Coupled resonator for control system
CN2007800120730A CN101416127B (en) 2006-04-07 2007-04-03 Coupled resonator for regulating system
US12/294,652 US7889028B2 (en) 2006-04-07 2007-04-03 Coupled resonator for regulating system
TW096111911A TW200746628A (en) 2006-04-07 2007-04-03 Coupled resonator for regulating system
AT07727747T ATE472756T1 (en) 2006-04-07 2007-04-03 COUPLED RESONATOR FOR A REGULATION SYSTEM
JP2009504691A JP4982556B2 (en) 2006-04-07 2007-04-03 Coupled resonators for tuning systems
DE602007007462T DE602007007462D1 (en) 2006-04-07 2007-04-03 COUPLED RESONATOR FOR A REGULATING SYSTEM
KR1020087027085A KR20080111523A (en) 2006-04-07 2007-04-03 Coupled resonator for regulating system
EP07727747A EP2008160B1 (en) 2006-04-07 2007-04-03 Coupled resonator for regulating system
PCT/EP2007/053276 WO2007115985A1 (en) 2006-04-07 2007-04-03 Coupled resonator for regulating system
HK09109548.9A HK1131446A1 (en) 2006-04-07 2009-10-15 Coupled resonator for regulating system

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EP2908187A1 (en) * 2014-02-17 2015-08-19 The Swatch Group Research and Development Ltd. Adjustment of a clock piece resonator by changing the active length of a hairspring
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EP2141555A1 (en) 2008-07-04 2010-01-06 The Swatch Group Research and Development Ltd. Coupled resonators for timepiece
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EP2908187A1 (en) * 2014-02-17 2015-08-19 The Swatch Group Research and Development Ltd. Adjustment of a clock piece resonator by changing the active length of a hairspring
EP2908191A2 (en) 2014-02-17 2015-08-19 The Swatch Group Research and Development Ltd. Adjustment of the frequency of a clock resonator by changing the rigidity of a resilient return means
EP2908185A1 (en) * 2014-02-17 2015-08-19 The Swatch Group Research and Development Ltd. Device for maintaining and adjusting a clock piece resonator
EP2908188A1 (en) * 2014-02-17 2015-08-19 The Swatch Group Research and Development Ltd. Adjustment of a clock piece resonator by changing the rigidity of a resilient return means
EP2908184A1 (en) * 2014-02-17 2015-08-19 The Swatch Group Research and Development Ltd. Method for maintaining and adjusting a clock piece resonator
EP2908191A3 (en) * 2014-02-17 2015-09-02 The Swatch Group Research and Development Ltd. Adjustment of the frequency of a clock resonator by changing the rigidity of a resilient return means
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CN104850000B (en) * 2014-02-17 2017-07-28 斯沃奇集团研究和开发有限公司 The method of clock and watch resonant frequency regulation, movement and include the clock and watch of the movement
US10241473B2 (en) 2014-02-17 2019-03-26 The Swatch Group Research And Development Ltd Method for maintaining and regulating a timepiece resonator
US10324416B2 (en) 2014-02-17 2019-06-18 The Swatch Group Research And Development Ltd. Method for maintaining and regulating the frequency of a timepiece resonator
RU2807031C2 (en) * 2020-12-02 2023-11-08 Омега Са Spiral spring for clock resonator mechanism, equipped with stiffness regulation means

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CN101416127B (en) 2012-03-21
TW200746628A (en) 2007-12-16
KR20080111523A (en) 2008-12-23
US7889028B2 (en) 2011-02-15
JP4982556B2 (en) 2012-07-25
EP2008160A1 (en) 2008-12-31
CN101416127A (en) 2009-04-22
EP2008160B1 (en) 2010-06-30
DE602007007462D1 (en) 2010-08-12
JP2009533917A (en) 2009-09-17
WO2007115985A1 (en) 2007-10-18
ATE472756T1 (en) 2010-07-15
HK1131446A1 (en) 2010-01-22
US20100283556A1 (en) 2010-11-11

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