EP4012506A1 - Timepiece resonator mechanism provided with a translation frame - Google Patents

Timepiece resonator mechanism provided with a translation frame Download PDF

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Publication number
EP4012506A1
EP4012506A1 EP20213737.8A EP20213737A EP4012506A1 EP 4012506 A1 EP4012506 A1 EP 4012506A1 EP 20213737 A EP20213737 A EP 20213737A EP 4012506 A1 EP4012506 A1 EP 4012506A1
Authority
EP
European Patent Office
Prior art keywords
translation table
blades
flexible
flexible guide
resonator mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20213737.8A
Other languages
German (de)
French (fr)
Inventor
Mohammad Hussein Kahrobaiyan
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
Original Assignee
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.)
Filing date
Publication date
Application filed by Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP20213737.8A priority Critical patent/EP4012506A1/en
Priority to US17/525,329 priority patent/US20220187768A1/en
Priority to JP2021187586A priority patent/JP7254147B2/en
Priority to CN202111523869.0A priority patent/CN114624982A/en
Publication of EP4012506A1 publication Critical patent/EP4012506A1/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/045—Oscillators acting by spring tension with oscillating blade springs
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/02—Oscillators acting by gravity, e.g. pendulum swinging in a plane
    • 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
    • G04B17/10—Oscillators with torsion strips or springs acting in the same manner as torsion strips, e.g. weight oscillating in a horizontal plane
    • 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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
    • 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
    • G04B33/00—Calibers

Definitions

  • the invention relates to a clockwork resonator mechanism, the mechanism being provided with a translation table.
  • the balance-spring constitutes the time base of the watch. It is also called resonator.
  • an inertial element To constitute a mechanical resonator, an inertial element, a guide and an elastic return element are required.
  • a spiral spring acts as an elastic return element for the inertial element that constitutes a balance. This balance wheel is guided in rotation by pivots, which rotate in smooth ruby bearings.
  • the request US202003805 suggests adding an unbalance between the center of mass and the center of rotation along the main axis of symmetry. But the unbalance weighs down the balance wheel, which induces adjustment problems and loss of energy.
  • the object of the present invention is to overcome all or part of the aforementioned drawbacks by proposing a mechanical clockwork resonator that is less sensitive to the direction of gravity.
  • the invention relates to a rotary resonator mechanism comprising an oscillating mass, a flexible guide comprising at least two flexible blades connecting an immobile support to the oscillating mass, the resonator mechanism extending substantially in the same plane to allow the oscillating mass to perform a rotary movement around a virtual pivot, the flexible guide extending along a main axis of symmetry.
  • the invention is remarkable in that the mechanism comprises a translation table arranged in series between the flexible guide and the mass oscillating, the translation table being joined to the flexible blades and/or to the oscillating mass.
  • the connection between the flexible guide and the pendulum is more flexible. Depending on the orientation of the translation table, this flexibility will modify the operation of the resonator mechanism.
  • the rate is increased in a particular direction of the mechanism with respect to gravity if the translation table adds flexibility in this direction, and the rate is decreased in a second direction perpendicular to the first.
  • the translation table makes it possible to bring the center of mass closer to or further away from the center of rotation of the pendulum under the effect of gravity. Consequently, the effect of gravity on the movement of the pendulum is compensated by rectifying the course of the resonator mechanism in a particular direction with respect to gravity.
  • the translation table can serve as shock protection.
  • the translation table protects the flexible guide against a risk of breakage following a shock.
  • the translation table is arranged to allow movement along the main axis of symmetry of the flexible guide in the rest position of the mechanism.
  • the translation table is arranged to allow movement in a direction substantially perpendicular to the main axis of symmetry of the flexible guide in the rest position of the mechanism.
  • the translation table comprises at least two secondary flexible blades and a rigid part, the secondary flexible blades being joined by one end to the rigid part, and by another end to the rocker arm, the blades of the flexible guide being connected to the rigid part of the translation table.
  • the secondary flexible blades are substantially parallel and arranged in different directions.
  • the two blades of the flexible guide are crossed.
  • the mechanism comprises a second translation table arranged in series between the first translation table and the flexible guide.
  • the second translation table comprises at least two tertiary flexible blades and a second rigid part, the tertiary flexible blades being joined by one end to the rigid part of the first translation table, and by another end to the second rigid part, the two blades of the flexible guide being connected to the second rigid part of the second translation table.
  • the invention also relates to a watch movement comprising such a resonator mechanism.
  • the figures 1 and 2 show a schematic representation of a first embodiment of a rotary resonator mechanism 1 for a clock movement.
  • the resonator mechanism 1 extends substantially in one plane and comprises an oscillating weight 2.
  • the oscillating weight 2 is for example an annular balance usually used in watchmaking.
  • the resonator mechanism 1 further comprises a flexible guide to allow the oscillating mass 2 to perform a rotary movement around a center of rotation 12.
  • the flexible guide comprises at least two flexible blades 4 connected to the stationary support 3.
  • the guide flexible extends along a main axis of symmetry 14 along which the flexible guide is in the position of equilibrium when it is in the rest position.
  • the two blades 4 are crossed, one end of each blade 4 being joined to the immobile support 3.
  • the blades 4 intersect on the main axis 14 of symmetry when the mechanism is in the rest position.
  • the flexible guide allows the oscillating mass 2 to perform a reciprocating rotary movement in the plane of the oscillating mechanism.
  • the figure 2 shows the mechanism in operation, the blades 4 of the flexible guide being curved so that the pendulum 2 can move.
  • the mechanism comprises a translation table 5 arranged in series between the flexible guide and the oscillating mass 2, the translation table 5 being joined on the one hand to the two flexible blades 4 of the guide, and on the other hand to the oscillating mass 2, here to the balance.
  • the translation table 5 comprises at least one, here two, secondary flexible blades 7 and a rigid part 6, the secondary flexible blades 7 being joined by one end to the rigid part 6, and by another end to the rocker arm 2, the blades 4 of the flexible guide being connected to the rigid part 6 of the translation table 5.
  • the secondary flexible blades 7 are substantially parallel and arranged in different directions.
  • the rigid part 6 comprises a body in the shape of an elbow, the rigid part 6 comprising a segment 11 substantially parallel to the main axis of symmetry 14 in the rest position of the mechanism, as well as a segment 9 substantially perpendicular to the axis of main symmetry 14 in the rest position of the mechanism 1.
  • the secondary blades 7 are joined to the segment 11 substantially parallel to the inside of the elbow, and the blades 4 of the flexible guide 1 are joined to the segment 9 substantially perpendicular to the outside of the elbow .
  • the balance comprises a lug 8 extending towards the inside of the ring in the plane of the balance.
  • the lug 8 allows the secondary flexible strips 7 to be attached to the ring in a position substantially perpendicular to the flexible guide in the rest position of the mechanism 1.
  • the two secondary strips 7 are substantially perpendicular to the axis of main symmetry 14 in the rest position of the mechanism 1.
  • the translation table 5 is arranged to allow additional movement along the main axis of symmetry 14 of the flexible guide to bring the center of mass 13 of the balance wheel closer to or further away from the center of rotation 12.
  • the pendulum when it is in motion, it makes an angle ⁇ with the axis of symmetry primary 14 initial flexible guidance at rest.
  • the translation table makes it possible to bring the center of mass 13 of the balance wheel closer to or further away from the center of rotation 12, to increase the rate of the mechanism and compensate for the effect of gravity on the movement of the pendulum. Movement occurs in the direction of gravity.
  • the figures 3 and 4 show a second embodiment of a resonator mechanism 10 according to the invention.
  • the flexible guide and the oscillating mass 2 are identical to the first embodiment.
  • the resonator mechanism further comprises a translation table 15 arranged to allow movement in a direction perpendicular to the main axis of symmetry 14 of the flexible guide.
  • the translation table 15 is arranged perpendicular to that of the first embodiment, and allows movement of the flexible guide perpendicular to the movement of the first embodiment.
  • the translation table 15 comprises at least one, preferably two, secondary flexible blades 17 and a rigid part 16, the secondary flexible blades 17 being joined by one end to the rigid part 16, and by another end to the rocker arm 2.
  • blades 4 of the flexible guide are connected to the rigid part 16 of the translation table 15.
  • the secondary flexible blades 17 are substantially parallel and arranged in different directions.
  • the secondary flexible blades 17 are directly joined to the ring so as to be substantially parallel to the flexible guide.
  • the two secondary blades 17 are substantially parallel to the main axis of symmetry 14 in the rest position of the mechanism 10.
  • the rigid part 16 comprises an elongated body arranged perpendicular to the secondary flexible blades 17 and to the axis main symmetry 14 of the flexible guide.
  • the translation table 5 is arranged to allow an additional movement perpendicular to the main axis of symmetry 14 of the flexible guide to move the center of mass 13 of the pendulum with respect to the center of rotation 12. As seen in the figure 4 , when the pendulum is in motion, it forms an angle ⁇ with the initial main axis of symmetry 14 of the flexible guide at rest. Thus, when gravity is oriented perpendicular to the main axis of symmetry 14, the translation table makes it possible to move the center of mass 13 away from the center of rotation 12 of the balance, to increase the rate of the mechanism and compensate for the effect of gravity on the movement of the pendulum.
  • the third embodiment of the figure 5 shows a resonator mechanism 20 comprising two translation tables 5, 25 arranged in series between the flexible guide and the oscillating weight 2.
  • the two tables 5, 25 are substantially perpendicular to each other to allow the effects of gravity to be compensated in both directions .
  • the first translation table 5 is arranged as in the first embodiment, and the second translation table 25 is arranged between the flexible guide and the first translation table 5.
  • the second translation table 25 is similar to that of the second embodiment of achievement and oriented in the same direction.
  • the rocker arm comprises an internal lug 8 on which the secondary blades 7 of the first translation table 5 are joined.
  • the second translation table 25 comprises a second rigid part 26 and a pair of tertiary blades 27 joined to the substantially perpendicular segment 9 of the first angled rigid part 6 of the first translation table 5.
  • the crossed blades 4 of the flexible guide are joined by on the one hand to a stationary support 3, and on the other hand to the second rigid part 26 of the second translation table 25.
  • the secondary blades 7 of the first translation table 5 are joined on the one hand to the lug 8 and other starts from the substantially parallel segment of the rigid part 6 of the first translation table 5.
  • Such a combination of translation tables 5, 25 makes it possible to modify the rigidity of the flexible guide in both directions with respect to gravity as required.
  • the tables are reversed relative to each other.
  • the first translation table is arranged between the flexible guide and the second translation table, the second translation table being joined to the balance.
  • one of the translation tables is oriented in a direction different from the main axis of symmetry 14 of the pivot, and which can also be different from the axis perpendicular to the main axis of symmetry 14.
  • the invention also relates to a clock movement, not shown in the figures, the movement comprising a rotary resonator mechanism as described above.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Machine Tool Units (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Electric Clocks (AREA)

Abstract

L'invention concerne un mécanisme résonateur (1) rotatif comprenant une masse oscillante (2), un guidage flexible comprenant au moins deux lames flexibles (4) reliant un support immobile (3) à la masse oscillante (2), le mécanisme résonateur (1) s'étendant sensiblement dans un même plan pour permettre à la masse oscillante d'effectuer un mouvement rotatif autour d'un pivot virtuel, le guidage flexible (1) s'étendant selon un axe de symétrie principal (14). Le mécanisme (1) comprend également une table de translation (5) agencée entre le guidage flexible et la masse oscillante (2), la table de translation (5) étant jointe aux lames flexibles (4) et/ou à la masse oscillante (2).L'invention concerne aussi un mouvement d'horlogerie comprenant un tel résonateur (1).The invention relates to a rotating resonator mechanism (1) comprising an oscillating mass (2), a flexible guide comprising at least two flexible blades (4) connecting a stationary support (3) to the oscillating mass (2), the resonator mechanism ( 1) extending substantially in the same plane to allow the oscillating mass to perform a rotary movement around a virtual pivot, the flexible guide (1) extending along a main axis of symmetry (14). The mechanism (1) also comprises a translation table (5) arranged between the flexible guide and the oscillating mass (2), the translation table (5) being joined to the flexible blades (4) and/or to the oscillating mass ( 2). The invention also relates to a clock movement comprising such a resonator (1).

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention se rapporte à un mécanisme résonateur d'horlogerie, le mécanisme étant muni d'une table de translation.The invention relates to a clockwork resonator mechanism, the mechanism being provided with a translation table.

Arrière-plan technologiqueTechnology background

La plupart des montres mécaniques actuelles sont munie d'un balancier-spiral et d'un mécanisme d'échappement à ancre suisse. Le balancier-spiral constitue la base de temps de la montre. On l'appelle aussi résonateur.Most current mechanical watches are equipped with a balance-spring and a Swiss lever escapement mechanism. The balance-spring constitutes the time base of the watch. It is also called resonator.

L'échappement, quant à lui, remplit deux fonctions principales:

  • entretenir les va-et-vient du résonateur ;
  • compter ces va-et-vient.
The escapement, on the other hand, performs two main functions:
  • maintain the back and forth of the resonator;
  • count these comings and goings.

Pour constituer un résonateur mécanique, il faut un élément inertiel, un guidage et un élément de rappel élastique. Traditionnellement, un ressort spiral joue le rôle d'élément de rappel élastique pour l'élément inertiel que constitue un balancier. Ce balancier est guidé en rotation par des pivots, qui tournent dans des paliers lisses en rubis.To constitute a mechanical resonator, an inertial element, a guide and an elastic return element are required. Traditionally, a spiral spring acts as an elastic return element for the inertial element that constitutes a balance. This balance wheel is guided in rotation by pivots, which rotate in smooth ruby bearings.

On utilise aujourd'hui des guidages flexibles comme ressort pour former un pivot virtuel. Les guidages flexibles à pivot virtuel permettent d'améliorer sensiblement les résonateurs horlogers. Les plus simples sont des pivots à lames croisées, composés de deux dispositifs de guidage à lames droites qui se croisent, en général perpendiculairement. Ces deux lames peuvent être, soit tridimensionnelles dans deux plans différents, soit bidimensionnelles dans un même plan et sont alors comme soudées à leur point de croisement. Mais il existe aussi des guidages à lames décroisées de type RCC (pour « Remote Center Compliance » en anglais), qui ont des lames droites ne se croisant pas. Un tel résonateur est décrit dans le document EP 2911012 , ou dans les documents EP14199039 , et EP16155039 .Today, flexible guides are used as a spring to form a virtual pivot. Flexible virtual pivot guides make it possible to significantly improve watch resonators. The simplest are cross-bladed pivots, consisting of two straight-bladed guide devices that intersect, usually perpendicularly. These two blades can be either three-dimensional in two different planes, or two-dimensional in the same plane and are then as if welded at their crossing point. But there are also guides with uncrossed blades of the RCC type (for “Remote Center Compliance”), which have straight blades not crossing. Such a resonator is described in the document EP 2911012 , or in the documents EP14199039 , and EP16155039 .

Cependant, lorsqu'on veut utiliser des lames flexibles pour faire pivoter un balancier annulaire rotatif de manière semblable au mouvement d'un balancier avec un spiral, la gravité a un impact significatif sur la marche du mouvement horloger. En effet, le guidage flexible est orienté selon un axe principale de symétrie, lorsque le mécanisme est au repos. Ainsi, si la gravité est dirigée selon cet axe, son impact est bien différent du cas où la gravité est dirigée selon une direction perpendiculaire à cet axe. Ainsi, le centre de masse du mécanise est déplacé sous l'effet de la gravité, ce qui engendre des différences de performances chronométriques entre différentes positions de la montre.However, when one wants to use flexible blades to pivot a rotating annular balance wheel in a manner similar to the movement of a balance wheel with a hairspring, gravity has a significant impact on the rate of the watch movement. Indeed, the flexible guide is oriented along a main axis of symmetry, when the mechanism is at rest. Thus, if gravity is directed along this axis, its impact is quite different from the case where gravity is directed along a direction perpendicular to this axis. Thus, the center of mass of the mechanism is moved under the effect of gravity, which generates differences in chronometric performance between different positions of the watch.

Pour répondre à ce problème, la demande US202003805 propose d'ajouter un balourd entre le centre de masse et le centre de rotation selon l'axe de symétrie principal. Mais le balourd alourdit le balancier, ce qui induit des problèmes de réglage et de perte d'énergie.To address this problem, the request US202003805 suggests adding an unbalance between the center of mass and the center of rotation along the main axis of symmetry. But the unbalance weighs down the balance wheel, which induces adjustment problems and loss of energy.

Résumé de l'inventionSummary of the invention

Le but de la présente invention est de pallier tout ou partie des inconvénients cités précédemment en proposant un mécanise résonateur d'horlogerie moins sensible à la direction de la gravité.The object of the present invention is to overcome all or part of the aforementioned drawbacks by proposing a mechanical clockwork resonator that is less sensitive to the direction of gravity.

A cet effet, l'invention se rapporte à un mécanisme résonateur rotatif comprenant une masse oscillante, un guidage flexible comprenant au moins deux lames flexibles reliant un support immobile à la masse oscillante, le mécanisme résonateur s'étendant sensiblement dans un même plan pour permettre à la masse oscillante d'effectuer un mouvement rotatif autour d'un pivot virtuel, le guidage flexible s'étendant selon un axe de symétrie principal.To this end, the invention relates to a rotary resonator mechanism comprising an oscillating mass, a flexible guide comprising at least two flexible blades connecting an immobile support to the oscillating mass, the resonator mechanism extending substantially in the same plane to allow the oscillating mass to perform a rotary movement around a virtual pivot, the flexible guide extending along a main axis of symmetry.

L'invention est remarquable en ce que le mécanisme comprend une table de translation agencée en série entre le guidage flexible et la masse oscillante, la table de translation étant jointe aux lames flexibles et/ou à la masse oscillante.The invention is remarkable in that the mechanism comprises a translation table arranged in series between the flexible guide and the mass oscillating, the translation table being joined to the flexible blades and/or to the oscillating mass.

Grâce à la table de translation, la connexion entre le guidage flexible et le balancier est plus souple. Selon l'orientation de la table de translation, cette souplesse va modifier la marche du mécanisme résonateur. Ainsi, la marche est augmentée dans une direction particulière du mécanisme par rapport à la gravité si la table de translation ajoute de la souplesse dans cette direction, et la marche est diminuée dans une deuxième direction perpendiculaire à la première. La table de translation permet de rapprocher ou d'éloigner le centre de masse du centre de rotation du balancier sous l'effet de la gravité. Par conséquent, on compense l'effet de la gravité sur le mouvement du balancier, en rectifiant la marche du mécanisme résonateur dans une direction particulière par rapport à la gravité.Thanks to the translation table, the connection between the flexible guide and the pendulum is more flexible. Depending on the orientation of the translation table, this flexibility will modify the operation of the resonator mechanism. Thus, the rate is increased in a particular direction of the mechanism with respect to gravity if the translation table adds flexibility in this direction, and the rate is decreased in a second direction perpendicular to the first. The translation table makes it possible to bring the center of mass closer to or further away from the center of rotation of the pendulum under the effect of gravity. Consequently, the effect of gravity on the movement of the pendulum is compensated by rectifying the course of the resonator mechanism in a particular direction with respect to gravity.

En outre, la table de translation peut servir de protection antichoc. Ainsi, la table de translation protège le guidage flexible contre un risque de rupture consécutif à un choc.In addition, the translation table can serve as shock protection. Thus, the translation table protects the flexible guide against a risk of breakage following a shock.

Selon une forme de réalisation particulière de l'invention, la table de translation est agencée pour permettre un déplacement selon l'axe de symétrie principale du guidage flexible en position de repos du mécanisme.According to a particular embodiment of the invention, the translation table is arranged to allow movement along the main axis of symmetry of the flexible guide in the rest position of the mechanism.

Selon une forme de réalisation particulière de l'invention, la table de translation est agencée pour permettre un déplacement selon une direction sensiblement perpendiculaire à l'axe de symétrie principale du guidage flexible en position de repos du mécanisme.According to a particular embodiment of the invention, the translation table is arranged to allow movement in a direction substantially perpendicular to the main axis of symmetry of the flexible guide in the rest position of the mechanism.

Selon une forme de réalisation particulière de l'invention, la table de translation comprend au moins deux lames flexibles secondaires et une partie rigide, les lames flexibles secondaires étant jointes par une extrémité à la partie rigide, et par une autre extrémité au balancier, les lames du guidage flexible étant reliées à la partie rigide de la table de translation.According to a particular embodiment of the invention, the translation table comprises at least two secondary flexible blades and a rigid part, the secondary flexible blades being joined by one end to the rigid part, and by another end to the rocker arm, the blades of the flexible guide being connected to the rigid part of the translation table.

Selon une forme de réalisation particulière de l'invention, les lames flexibles secondaires sont sensiblement parallèles et disposées selon des directions différentes.According to a particular embodiment of the invention, the secondary flexible blades are substantially parallel and arranged in different directions.

Selon une forme de réalisation particulière de l'invention, les deux lames du guidage flexible sont croisées.According to a particular embodiment of the invention, the two blades of the flexible guide are crossed.

Selon une forme de réalisation particulière de l'invention, le mécanisme comprend une deuxième table de translation agencée en série entre la première table de translation et le guidage flexible.According to a particular embodiment of the invention, the mechanism comprises a second translation table arranged in series between the first translation table and the flexible guide.

Selon une forme de réalisation particulière de l'invention, la deuxième table de translation comprend au moins deux lames flexibles tertiaires et une seconde partie rigide, les lames flexibles tertiaires étant jointes par une extrémité à la partie rigide de la première table de translation, et par une autre extrémité à la seconde partie rigide, les deux lames du guidage flexible étant reliées à la seconde partie rigide de la deuxième table de translation.According to a particular embodiment of the invention, the second translation table comprises at least two tertiary flexible blades and a second rigid part, the tertiary flexible blades being joined by one end to the rigid part of the first translation table, and by another end to the second rigid part, the two blades of the flexible guide being connected to the second rigid part of the second translation table.

L'invention se rapporte également à un mouvement horloger comportant un tel mécanisme résonateur.The invention also relates to a watch movement comprising such a resonator mechanism.

Brève description des figuresBrief description of figures

Les buts, avantages et caractéristiques de la présente invention apparaîtront à la lecture de plusieurs formes de réalisation données uniquement à titre d'exemples non limitatifs, en référence aux dessins annexés dans lesquels :

  • la figure 1 représente schématiquement une vue de dessus d'un mécanisme résonateur selon un premier mode de réalisation de l'invention,
  • la figure 2 représente schématiquement une vue de dessus du mécanisme résonateur du premier mode de réalisation en fonctionnement,
  • la figure 3 représente schématiquement une vue de dessus d'un mécanisme résonateur selon un deuxième mode de réalisation de l'invention,
  • la figure 4 représente schématiquement une vue de dessus du mécanisme résonateur du deuxième mode de réalisation en fonctionnement,
  • la figure 5 représente schématiquement une vue de dessus d'un guidage flexible selon un troisième mode de réalisation de l'invention.
The aims, advantages and characteristics of the present invention will appear on reading several embodiments given solely by way of non-limiting examples, with reference to the appended drawings in which:
  • the figure 1 schematically represents a top view of a resonator mechanism according to a first embodiment of the invention,
  • the figure 2 schematically represents a top view of the resonator mechanism of the first embodiment in operation,
  • the picture 3 schematically represents a top view of a resonator mechanism according to a second embodiment of the invention,
  • the figure 4 schematically represents a top view of the resonator mechanism of the second embodiment in operation,
  • the figure 5 schematically represents a top view of a flexible guide according to a third embodiment of the invention.

Description détaillée de l'inventionDetailed description of the invention

Les figures 1 et 2 montrent une représentation schématique d'un premier mode de réalisation d'un mécanisme résonateur 1 rotatif pour un mouvement d'horlogerie. Le mécanisme résonateur 1 s'étend sensiblement dans un plan et comprend une masse oscillante 2. La masse oscillante 2 est par exemple un balancier annulaire usuellement utilisé en horlogerie.The figures 1 and 2 show a schematic representation of a first embodiment of a rotary resonator mechanism 1 for a clock movement. The resonator mechanism 1 extends substantially in one plane and comprises an oscillating weight 2. The oscillating weight 2 is for example an annular balance usually used in watchmaking.

Le mécanisme résonateur 1 comprend en outre un guidage flexible pour permettre à la masse oscillante 2 d'effectuer un mouvement rotatif autour d'un centre de rotation 12. Le guidage flexible comprend au moins deux lames flexibles 4 reliées au support immobile 3. Le guidage flexible s'étend selon un axe de symétrie principal 14 selon lequel le guidage flexible est en position d'équilibre lorsqu'il est en position de repos. Les deux lames 4 sont croisées, une extrémité de chaque lame 4 étant jointe au support immobile 3. Les lames 4 se croisent sur l'axe principal 14 de symétrie lorsque le mécanisme est en position de repos. Le guidage flexible permet à la masse oscillante 2 d'effectuer un mouvement rotatif de va-et-vient dans le plan du mécanisme oscillateur. La figure 2 montre le mécanisme en fonctionnement, les lames 4 du guidage flexible étant courbées pour que le balancier 2 puisse se déplacer.The resonator mechanism 1 further comprises a flexible guide to allow the oscillating mass 2 to perform a rotary movement around a center of rotation 12. The flexible guide comprises at least two flexible blades 4 connected to the stationary support 3. The guide flexible extends along a main axis of symmetry 14 along which the flexible guide is in the position of equilibrium when it is in the rest position. The two blades 4 are crossed, one end of each blade 4 being joined to the immobile support 3. The blades 4 intersect on the main axis 14 of symmetry when the mechanism is in the rest position. The flexible guide allows the oscillating mass 2 to perform a reciprocating rotary movement in the plane of the oscillating mechanism. The figure 2 shows the mechanism in operation, the blades 4 of the flexible guide being curved so that the pendulum 2 can move.

Selon l'invention, le mécanisme comprend une table de translation 5 agencée en série entre le guidage flexible et la masse oscillante 2, la table de translation 5 étant jointe d'une part aux deux lames flexibles 4 du guidage, et d'autre part à la masse oscillante 2, ici au balancier. La table de translation 5 comprend au moins une, ici deux, lames flexibles secondaires 7 et une partie rigide 6, les lames flexibles secondaires 7 étant jointes par une extrémité à la partie rigide 6, et par une autre extrémité au balancier 2, les lames 4 du guidage flexible étant reliées à la partie rigide 6 de la table de translation 5. Les lames flexibles secondaires 7 sont sensiblement parallèles et disposées selon des directions différentes.According to the invention, the mechanism comprises a translation table 5 arranged in series between the flexible guide and the oscillating mass 2, the translation table 5 being joined on the one hand to the two flexible blades 4 of the guide, and on the other hand to the oscillating mass 2, here to the balance. The translation table 5 comprises at least one, here two, secondary flexible blades 7 and a rigid part 6, the secondary flexible blades 7 being joined by one end to the rigid part 6, and by another end to the rocker arm 2, the blades 4 of the flexible guide being connected to the rigid part 6 of the translation table 5. The secondary flexible blades 7 are substantially parallel and arranged in different directions.

La partie rigide 6 comprend un corps en forme de coude, la partie rigide 6 comprenant un segment 11 sensiblement parallèle à l'axe de symétrie principale 14 en position de repos du mécanisme, ainsi qu'un segment 9 sensiblement perpendiculaire à l'axe de symétrie principale 14 en position de repos du mécanisme 1. Les lames secondaires 7 sont jointes au segment 11 sensiblement parallèle à l'intérieur du coude, et les lames 4 du guidage flexible 1 sont jointes au segment 9 sensiblement perpendiculaire à l'extérieur du coude.The rigid part 6 comprises a body in the shape of an elbow, the rigid part 6 comprising a segment 11 substantially parallel to the main axis of symmetry 14 in the rest position of the mechanism, as well as a segment 9 substantially perpendicular to the axis of main symmetry 14 in the rest position of the mechanism 1. The secondary blades 7 are joined to the segment 11 substantially parallel to the inside of the elbow, and the blades 4 of the flexible guide 1 are joined to the segment 9 substantially perpendicular to the outside of the elbow .

Le balancier comprend un ergot 8 s'étendant vers l'intérieur de l'anneau dans le plan du balancier. L'ergot 8 permet le rattachement des lames flexibles secondaires 7 sur l'anneau dans une position sensiblement perpendiculaire au guidage flexible en positon de repos du mécanisme 1. Dans ce mode de réalisation, les deux lames secondaires 7 sont sensiblement perpendiculaires à l'axe de symétrie principale 14 en position de repos du mécanisme 1.The balance comprises a lug 8 extending towards the inside of the ring in the plane of the balance. The lug 8 allows the secondary flexible strips 7 to be attached to the ring in a position substantially perpendicular to the flexible guide in the rest position of the mechanism 1. In this embodiment, the two secondary strips 7 are substantially perpendicular to the axis of main symmetry 14 in the rest position of the mechanism 1.

La table de translation 5 est agencée pour permettre un déplacement supplémentaire selon l'axe de symétrie principale 14 du guidage flexible pour rapprocher ou éloigner le centre de masse 13 du balancier du centre de rotation 12. Comme on le voit sur la figure 2, lorsque le balancier est en mouvement, il fait un angle θ avec l'axe de symétrie principale 14 initial du guidage flexible au repos. Ainsi, quand la gravité est orientée selon l'axe de symétrie principale 14, la table de translation permet de rapprocher ou éloigner le centre de masse 13 du balancier du centre de rotation 12, pour augmenter la marche du mécanisme et compenser l'effet de la gravité sur le mouvement du balancier. Le déplacement s'effectue selon la direction de la gravité.The translation table 5 is arranged to allow additional movement along the main axis of symmetry 14 of the flexible guide to bring the center of mass 13 of the balance wheel closer to or further away from the center of rotation 12. As can be seen in the figure 2 , when the pendulum is in motion, it makes an angle θ with the axis of symmetry primary 14 initial flexible guidance at rest. Thus, when gravity is oriented along the main axis of symmetry 14, the translation table makes it possible to bring the center of mass 13 of the balance wheel closer to or further away from the center of rotation 12, to increase the rate of the mechanism and compensate for the effect of gravity on the movement of the pendulum. Movement occurs in the direction of gravity.

Les figures 3 et 4 montrent un deuxième mode de réalisation d'un mécanisme résonateur 10 selon l'invention. Le guidage flexible et la masse oscillante 2 sont identiques au premier mode de réalisation.The figures 3 and 4 show a second embodiment of a resonator mechanism 10 according to the invention. The flexible guide and the oscillating mass 2 are identical to the first embodiment.

Le mécanisme résonateur comprend en outre une table de translation 15 agencée pour permettre un déplacement selon une direction perpendiculaire à l'axe de symétrie principale 14 du guidage flexible. Autrement dit, la table de translation 15 est disposée perpendiculairement à celle du premier mode de réalisation, et permet un déplacement du guidage flexible perpendiculairement au déplacement du premier mode de réalisation.The resonator mechanism further comprises a translation table 15 arranged to allow movement in a direction perpendicular to the main axis of symmetry 14 of the flexible guide. In other words, the translation table 15 is arranged perpendicular to that of the first embodiment, and allows movement of the flexible guide perpendicular to the movement of the first embodiment.

La table de translation 15 comprend au moins une, de préférence deux, lames flexibles secondaires 17 et une partie rigide 16, les lames flexibles secondaires 17 étant jointes par une extrémité à la partie rigide 16, et par une autre extrémité au balancier 2. Les lames 4 du guidage flexible sont reliées à la partie rigide 16 de la table de translation 15. Les lames flexibles secondaires 17 sont sensiblement parallèles et disposées selon des directions différentes. Les lames flexibles secondaires 17 sont directement jointes à l'anneau de manière à être sensiblement parallèles au guidage flexible.The translation table 15 comprises at least one, preferably two, secondary flexible blades 17 and a rigid part 16, the secondary flexible blades 17 being joined by one end to the rigid part 16, and by another end to the rocker arm 2. blades 4 of the flexible guide are connected to the rigid part 16 of the translation table 15. The secondary flexible blades 17 are substantially parallel and arranged in different directions. The secondary flexible blades 17 are directly joined to the ring so as to be substantially parallel to the flexible guide.

Dans ce mode de réalisation, les deux lames secondaires 17 sont sensiblement parallèles à l'axe de symétrie principale 14 en position de repos du mécanisme 10. La partie rigide 16 comprend un corps allongé agencé perpendiculairement aux lames flexibles secondaires 17 et à l'axe de symétrie principal 14 du guidage flexible.In this embodiment, the two secondary blades 17 are substantially parallel to the main axis of symmetry 14 in the rest position of the mechanism 10. The rigid part 16 comprises an elongated body arranged perpendicular to the secondary flexible blades 17 and to the axis main symmetry 14 of the flexible guide.

La table de translation 5 est agencée pour permettre un déplacement supplémentaire perpendiculaire à l'axe de symétrie principale 14 du guidage flexible pour déplacer le centre de masse 13 du balancier par rapport au centre de rotation 12. Comme on le voit sur la figure 4, lorsque le balancier est en mouvement, il fait un angle θ avec l'axe de symétrie principale 14 initial du guidage flexible au repos. Ainsi, lorsque la gravité est orientée perpendiculairement à l'axe de symétrie principale 14, la table de translation permet d'éloigner le centre de masse 13 du centre de rotation 12 du balancier, pour augmenter la marche du mécanisme et compenser l'effet de la gravité sur le mouvement du balancier.The translation table 5 is arranged to allow an additional movement perpendicular to the main axis of symmetry 14 of the flexible guide to move the center of mass 13 of the pendulum with respect to the center of rotation 12. As seen in the figure 4 , when the pendulum is in motion, it forms an angle θ with the initial main axis of symmetry 14 of the flexible guide at rest. Thus, when gravity is oriented perpendicular to the main axis of symmetry 14, the translation table makes it possible to move the center of mass 13 away from the center of rotation 12 of the balance, to increase the rate of the mechanism and compensate for the effect of gravity on the movement of the pendulum.

Le troisième mode de réalisation de la figure 5 montre un mécanisme résonateur 20 comprenant deux tables de translation 5, 25 agencées en série entre le guidage flexible et la masse oscillante 2. Les deux tables 5, 25 sont sensiblement perpendiculaires entre elles pour permettre de compenser les effets de la gravité dans les deux directions. La première table de translation 5 est agencée comme dans le premier mode de réalisation, et la deuxième table de translation 25 est disposée entre le guidage flexible et la première table de translation 5. La deuxième table de translation 25 est semblable à celle du deuxième mode de réalisation et orientée dans le même sens.The third embodiment of the figure 5 shows a resonator mechanism 20 comprising two translation tables 5, 25 arranged in series between the flexible guide and the oscillating weight 2. The two tables 5, 25 are substantially perpendicular to each other to allow the effects of gravity to be compensated in both directions . The first translation table 5 is arranged as in the first embodiment, and the second translation table 25 is arranged between the flexible guide and the first translation table 5. The second translation table 25 is similar to that of the second embodiment of achievement and oriented in the same direction.

Le balancier comprend un ergot 8 intérieur sur lequel les lames secondaires 7 de la première table de translation 5 sont jointes.The rocker arm comprises an internal lug 8 on which the secondary blades 7 of the first translation table 5 are joined.

La deuxième table de translation 25 comprend une deuxième partie rigide 26 et une paire de lames tertiaires 27 jointes au segment sensiblement perpendiculaire 9 de la première partie rigide 6 coudée de la première table de translation 5. Les lames croisées 4 du guidage flexible sont jointes d'une part à un support immobile 3, et d'autre part à la deuxième partie rigide 26 de la deuxième table de translation 25. Les lames secondaires 7 de la première table de translation 5 sont jointes d'une part à l'ergot 8 et d'autre part au segment sensiblement parallèle de la partie rigide 6 de la première table de translation 5.The second translation table 25 comprises a second rigid part 26 and a pair of tertiary blades 27 joined to the substantially perpendicular segment 9 of the first angled rigid part 6 of the first translation table 5. The crossed blades 4 of the flexible guide are joined by on the one hand to a stationary support 3, and on the other hand to the second rigid part 26 of the second translation table 25. The secondary blades 7 of the first translation table 5 are joined on the one hand to the lug 8 and other starts from the substantially parallel segment of the rigid part 6 of the first translation table 5.

Une telle combinaison de tables de translation 5, 25 permet de modifier la rigidité du guidage flexible dans les deux sens par rapport à la gravité selon les besoins.Such a combination of translation tables 5, 25 makes it possible to modify the rigidity of the flexible guide in both directions with respect to gravity as required.

Dans une variante de réalisation, les tables sont inversées l'une par rapport à l'autre. Ainsi, la première table de translation est agencée entre le guidage flexible et la deuxième table de translation, la deuxième table de translation étant jointe au balancier.In a variant embodiment, the tables are reversed relative to each other. Thus, the first translation table is arranged between the flexible guide and the second translation table, the second translation table being joined to the balance.

Dans une autre variante de réalisation, une des tables de translation est orientée selon une direction différente de l'axe de symétrie principale 14 du pivot, et qui peut aussi être différente de l'axe perpendiculaire à l'axe de symétrie principale 14.In another variant embodiment, one of the translation tables is oriented in a direction different from the main axis of symmetry 14 of the pivot, and which can also be different from the axis perpendicular to the main axis of symmetry 14.

L'invention se rapporte également à un mouvement d'horlogerie, non représenté sur les figures, le mouvement comprenant un mécanisme résonateur rotatif tel que décrit précédemment.The invention also relates to a clock movement, not shown in the figures, the movement comprising a rotary resonator mechanism as described above.

Claims (9)

Mécanisme résonateur (1, 10, 20) rotatif comprenant une masse oscillante (2), un guidage flexible comprenant au moins deux lames flexibles (4) reliant un support immobile (3) à la masse oscillante (2), le mécanisme résonateur (1, 10, 20) s'étendant sensiblement dans un même plan pour permettre à la masse oscillante d'effectuer un mouvement rotatif autour d'un pivot virtuel, le guidage flexible (1, 10, 20) s'étendant selon un axe de symétrie principal (14), caractérisé en ce que le mécanisme (1, 10, 20) comprend une table de translation (5, 15) agencée en série entre le guidage flexible et la masse oscillante (2), la table de translation (5, 15) étant jointe aux lames flexibles (4) et/ou à la masse oscillante (2).Rotary resonator mechanism (1, 10, 20) comprising an oscillating mass (2), a flexible guide comprising at least two flexible blades (4) connecting an immobile support (3) to the oscillating mass (2), the resonator mechanism (1 , 10, 20) extending substantially in the same plane to allow the oscillating mass to perform a rotary movement around a virtual pivot, the flexible guide (1, 10, 20) extending along an axis of symmetry main (14), characterized in that the mechanism (1, 10, 20) comprises a translation table (5, 15) arranged in series between the flexible guide and the oscillating weight (2), the translation table (5, 15) being joined to the flexible blades (4) and/or to the oscillating weight (2). Mécanisme résonateur selon l'une, quelconque, des revendications précédentes, caractérisé en ce que la table de translation (5) est agencée pour permettre un déplacement selon l'axe de symétrie principale (14) du guidage flexible en position de repos du mécanisme (1, 10, 20).Resonator mechanism according to any one of the preceding claims, characterized in that the translation table (5) is arranged to allow movement along the main axis of symmetry (14) of the flexible guide in the rest position of the mechanism ( 1, 10, 20). Mécanisme résonateur selon l'une, quelconque, des revendications précédentes, caractérisé en ce que la table de translation (15) est agencée pour permettre un déplacement selon une direction sensiblement perpendiculaire à l'axe de symétrie principale (14) du guidage flexible en position de repos du mécanisme (1, 10, 20).Resonator mechanism according to any one of the preceding claims, characterized in that the translation table (15) is arranged to allow movement in a direction substantially perpendicular to the main axis of symmetry (14) of the flexible guide in position of the mechanism (1, 10, 20). Mécanisme résonateur selon l'une, quelconque, des revendications précédentes, caractérisé en ce que la table de translation (5, 15) comprend au moins deux lames flexibles secondaires (7, 17) et une partie rigide (6, 16), les lames flexibles secondaires (7, 17) étant jointes par une extrémité à la partie rigide (6, 16), et par une autre extrémité au balancier (2), les lames (4) du guidage flexible étant reliées à la partie rigide (6, 16) de la table de translation.Resonator mechanism according to any one of the preceding claims, characterized in that the translation table (5, 15) comprises at least two secondary flexible blades (7, 17) and a rigid part (6, 16), the blades secondary flexibles (7, 17) being joined by one end to the rigid part (6, 16), and by another end to the rocker arm (2), the blades (4) of the flexible guide being connected to the rigid part (6, 16) of the translation table. Mécanisme résonateur selon l'une, quelconque, des revendications 1 à 3, caractérisé en ce que les lames flexibles secondaires (7, 17) sont sensiblement parallèles et disposées selon des directions différentes.Resonator mechanism according to any one of Claims 1 to 3, characterized in that the secondary flexible blades (7, 17) are substantially parallel and arranged in different directions. Mécanisme résonateur selon l'une, quelconque, des revendications 1 à 3, caractérisé en ce que les deux lames (4) du guidage flexible sont croisées.Resonator mechanism according to any one of Claims 1 to 3, characterized in that the two blades (4) of the flexible guide are crossed. Mécanisme résonateur selon l'une, quelconque, des revendications 1 à 3, caractérisé en ce qu'il comprend une deuxième table de translation (25) agencée en série entre la première table de translation (5) et le guidage flexible.Resonator mechanism according to any one of Claims 1 to 3, characterized in that it comprises a second translation table (25) arranged in series between the first translation table (5) and the flexible guide. Mécanisme résonateur selon l'une, quelconque, des revendications précédentes, caractérisé en ce que la deuxième table de translation (25) comprend au moins deux lames flexibles tertiaires (27) et une seconde partie rigide (26), les lames flexibles tertiaires (27) étant jointes par une extrémité à la partie rigide (6) de la première table de translation (5), et par une autre extrémité à la seconde partie rigide (26), les deux lames (4) du guidage flexible étant reliées à la seconde partie rigide (26) de la deuxième table de translation.Resonator mechanism according to any one of the preceding claims, characterized in that the second translation table (25) comprises at least two tertiary flexible blades (27) and a second rigid part (26), the tertiary flexible blades (27 ) being joined by one end to the rigid part (6) of the first translation table (5), and by another end to the second rigid part (26), the two blades (4) of the flexible guide being connected to the second rigid part (26) of the second translation table. Mouvement d'horlogerie comprenant un mécanisme résonateur (1, 10, 20) selon l'une, quelconque, des revendications précédentes.Clock movement comprising a resonator mechanism (1, 10, 20) according to any one of the preceding claims.
EP20213737.8A 2020-12-14 2020-12-14 Timepiece resonator mechanism provided with a translation frame Pending EP4012506A1 (en)

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EP20213737.8A EP4012506A1 (en) 2020-12-14 2020-12-14 Timepiece resonator mechanism provided with a translation frame
US17/525,329 US20220187768A1 (en) 2020-12-14 2021-11-12 Timepiece resonator mechanism provided with a translation table
JP2021187586A JP7254147B2 (en) 2020-12-14 2021-11-18 Timepiece resonator mechanism with translation table
CN202111523869.0A CN114624982A (en) 2020-12-14 2021-12-14 Timepiece resonator mechanism provided with a translation stage

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