EP3502784A1 - Timepiece resonator with flexible guide - Google Patents

Timepiece resonator with flexible guide Download PDF

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Publication number
EP3502784A1
EP3502784A1 EP18201466.2A EP18201466A EP3502784A1 EP 3502784 A1 EP3502784 A1 EP 3502784A1 EP 18201466 A EP18201466 A EP 18201466A EP 3502784 A1 EP3502784 A1 EP 3502784A1
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EP
European Patent Office
Prior art keywords
serge
resonator
clock
elastic member
base
Prior art date
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Granted
Application number
EP18201466.2A
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German (de)
French (fr)
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EP3502784B1 (en
Inventor
Stéphane OES
Anthony Krüttli
David Chabloz
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.)
Patek Philippe SA Geneve
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Patek Philippe SA Geneve
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Publication of EP3502784A1 publication Critical patent/EP3502784A1/en
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    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00Mechanisms for stabilising frequency
    • G04B17/04Oscillators acting by spring tension
    • G04B17/045Oscillators acting by spring tension with oscillating blade springs
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00Mechanisms for stabilising frequency
    • G04B17/04Oscillators acting by spring tension
    • G04B17/06Oscillators with hairsprings, e.g. balance
    • G04B17/063Balance construction
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B15/00Escapements
    • G04B15/06Free escapements
    • G04B15/08Lever escapements

Definitions

  • the present invention relates to a flexible guide clock resonator intended to serve as a time base for a watch movement, like a sprung balance.
  • the flexible guide resonators are advantageous in that they have no axis of physical rotation and thus eliminate the friction generated by the rotation of such an axis.
  • This resonator is very specific and the use of such an anchor connected to a central rigid part does not seem applicable to other types of flexible guide resonators such as cross-blade resonators.
  • the anchor is located between two blades of the first resilient return means and has little room for its oscillations, which creates the risk of collision likely to disturb the operation of the resonator.
  • the state of the art does not propose a flexible guide resonator that can be serviced by a conventional exhaust in an optimized manner.
  • the present invention aims at satisfying, in part at least, this need.
  • a clock resonator comprising a base, a serge, an elastic member and an ankle, the elastic member connecting the serge to the base and guiding oscillations of the serge relative to the base around a virtual axis of rotation, the pin being intended to cooperate with a fork of an escapement for the maintenance of said oscillations, characterized in that the pin is carried by a free end of a support member extending from the serge to the virtual axis of rotation and forming with the serge a rigid part.
  • This arrangement allows a direct interaction between the exhaust and the movable rigid part of the resonator, as for the maintenance of the oscillations of a sprung balance.
  • the support member makes it possible to place the dowel at a location close to the virtual axis of rotation which is favorable in particular for the lifting angle and / or for reducing disturbances related to vertical shocks.
  • the pin is located, at least in part, out of the thickness of the serge to be able to cooperate with the fork of the escapement without possible collision between the resonator and the exhaust.
  • the present invention further provides a clock oscillator comprising the resonator defined above and an exhaust, and a method of manufacturing the resonator.
  • a resonator 1 intended to form the time base of a watch movement, in particular a wristwatch movement, comprises a base 2, a serge 3 and an elastic member 4 connecting the serge 3 to the base 2.
  • the base 2 may be in one part, as shown, or in two separate parts. It is intended to be fixed on a fixed or mobile support such as the movement stage or a tourbillon cage.
  • the serge 3 is suspended at the base 2 by the elastic member 4, that is to say is held only by the elastic member 4. It is preferably continuous, to promote its inertia compared to its mass but could be in the form of an interrupted ring.
  • the serge 3 is coplanar with the base 2 and surrounds it, in part at least.
  • the elastic member 4 serves as guiding means guiding the serge 3 in rotation relative to the base 2 about a virtual axis of rotation A substantially corresponding to the geometric axis of the serge 3.
  • the elastic member 4 also serves of elastic return means reminding serge 3 in an angular position of rest relative to the base 2.
  • the elastic member 4 is of the separated cross-leaf type: it comprises two elastic blades 4a, 4b crossing in plan view from above or below the resonator 1 but extending in two different parallel planes for to cross without contact.
  • the ends of each of these blades 4a, 4b are respectively joined to the base 2 and to the serge 3.
  • the crossing between these blades 4a, 4b defines the virtual axis of rotation A.
  • This type of flexible guidance is advantageous in that it has a low stiffness and allows a relatively large amplitude of oscillation of the serge 3.
  • the base 2 can be as described in the patent application WO 2017/055983 of the applicant, to allow adjustment of the position of the cross point of the blades 4a, 4b.
  • a support member 5 consisting of one or more rigid arms 5a, 5b extends, preferably in the plane of the serge 3, preferably radially, from the inner face 3a of the serge 3 towards the virtual axis of rotation A to a free end 5c.
  • the support member 5 consists of two rigid arms 5a, 5b which meet to form the free end 5c.
  • This free end 5c carries an ankle or ellipse 6 whose axis is parallel to the virtual axis of rotation A and perpendicular to the plane of the serge 3.
  • the peg 6 has the classic shape of a half -cylinder, but it could have another form. As visible at figure 2 , the peg 6 exceeds the thickness e of the serge 3, more precisely the plane defined by the lower face 3b of the serge 3.
  • the part of the peg 6 situated outside the thickness e cooperates in a conventional manner with the fork 7a of an escape anchor 7, for example a Swiss anchor.
  • an escape anchor 7 located under the resonator 1 and which interacts with the escape wheel 8a of an exhaust mobile 8 itself located under the resonator 1 and its serge 3.
  • the direct interaction between the exhaust 7, 8 and the rigid moving part of the resonator 1, comprising the serge 3, the support member 5 and the pin 6, contributes to obtaining a good performance.
  • the radial length of the support member 5 is chosen in particular according to the desired angle of lift for the resonator 1, that is to say the angle of the serge 3 during which the pin 6 is in contact with the the fork 7a.
  • the desired angle of lift for the resonator 1 that is to say the angle of the serge 3 during which the pin 6 is in contact with the the fork 7a.
  • arranging the pin 6 close to the virtual axis of rotation A increases the angle of lift, while moving it away from the virtual axis of rotation A decreases the angle of rotation. lifted.
  • With a Swiss lever escapement if one wishes to promote the yield, it is generally advantageous to have a relatively large lifting angle. If, on the other hand, it is desired to favor chronometry, a small angle of lift is generally preferable.
  • the stiffness of the flexible guide and the frequency are high compared to the spiral stiffness and the frequency of a balance spring, so that the disturbances caused by the exhaust are much weaker. It will therefore be possible to give priority to the efficiency with respect to chronometry and to place the peg 6 close to the virtual axis of rotation A. It is also important that the amplitude of oscillation of the resonator is greater than the angle of lift. In exemplary embodiments of the invention, the lifting angle is two times smaller than the oscillation amplitude of the resonator 1 and the oscillation frequency is several tens of Hertz.
  • the peg 6 is traversed symmetrically by an axis of symmetry D1 of the elastic member 4, allowing the resonator 1 to be symmetrically maintained, the elastic member 4 being biased identically during the two alternations of an oscillation. This feature improves chronometry.
  • the pin 6 is located on the same side of a straight line D2, perpendicular to the axis of symmetry D1 and cutting the virtual axis of rotation A, all the attachment points of the elastic member 4 to the serge 3, the base 2 being located on the other side of this line D2.
  • said attachment points are two in number and designated 4c, 4d.
  • the resonator 1 is balanced in that the center of mass of its movable rigid part 3, 5, 6 is situated substantially on the virtual axis of rotation A.
  • a recess 3c (cf. figure 1 ) is formed in the lower face 3b of the serge 3, in the region of the serge 3 from which the support member 5 extends.
  • the support member 5 is preferably symmetrical with respect to the axis of symmetry D1 of the elastic member 4 in plan view from above or below the resonator 1 and when the serge 3 is in its rest position (cf. figure 3 ).
  • the Figures 7 and 8 is represented a resonator 1 according to a second embodiment of the invention.
  • the resonator 1 according to this second embodiment differs from that according to the first embodiment essentially by the shape of its support member 5, its base 2 and its serge 3.
  • the support member 5 is constituted here of the two arms 5a, 5b, of different form from that of the first embodiment, and a third arm 5e which connects these two arms 5a, 5b.
  • the symmetry characteristics described above in relation to the first embodiment are found in the second embodiment.
  • the axis of rotation 7b of the anchor 7 passes through the central opening defined by the serge 3, in other words is surrounded by the serge 3, as can be seen in FIG. Figures 5 to 8 .
  • This characteristic makes the oscillator 1, 7, 8 compact in plan view from above or below while allowing the anchor 7 to have a long axis of rotation 7b, longer than that of the anchors interacting with balance-springs .
  • a long axis of rotation improves the guidance of the anchor, making it less prone to movements out of its plane.
  • the axis of rotation 7b of the anchor 7 has its pivots which rotate in bearings 9a, 9b respectively provided in the plate 10 of the watch movement and in an oscillator bridge 11 located above the resonator 1 and fixed by screws 11a to the plate 10.
  • This mounting of the anchor 7 between the plate 10 and the oscillator bridge 11 avoids the use of the traditional anchor bridge interposed between the plate and the resonator.
  • the anchor 7 and the resonator 1 can thus be close to each other in the direction of the height (direction of the virtual axis of rotation A), allowing the peg 6 to be shorter.
  • a short peg 6 reduces the risk of tilting of the resonator 1 around the axis BB of the figure 7 during the contacts between the pin 6 and the fork 7a and the effect of a possible defect perpendicularity of the pin 6.
  • the positioning of the pin 6 in the fork 7a and the operation of the oscillator can be particularly accurate .
  • the axis of rotation 7b of the anchor 7 passes through the central opening of the serge 3 between the arms 5a, 5b of the support member 5.
  • the axis 7b can serve as a stop to these arms 5a, 5b to allow oscillations of the serge 3 only in a predetermined angular range and prevent too high amplitude oscillation of the serge 3 or that a shock leads to exceeding the yield strength of the serge 3 elastic member 4.
  • the anchor 7 used in the present invention can be replaced by another type of fork energy transmission member capable of communicating pulses of mechanical energy to the pin 6.
  • the anchor 7 can for example be replaced by the trigger rocker of a percussion escapement as described in the patent application WO 2018/002778 of the plaintiff.
  • the base 2 of the resonator 1 is mounted on the plate 10 via a bridge 12. Alternatively, however, it could be mounted directly on the plate 10.
  • the attachment of the base 2 and the bridge 12 to the plate 10 is provided by positioning pins 13 and holding screws 14.
  • the bearings 9b and 9a in which the pivots of the axis of rotation 7b of the anchor 7 rotate are provided respectively in the bridges 11 and 12, allowing these bridges to anchor 7. and the resonator 1 to form together a module, the module of which the escape mobile 8 can also be part by pivoting itself also in the bridges 11, 12.
  • stops 15, 16 integral with the oscillator bridge 11 limit undesirable movements of the serge 3 during shocks.
  • the abutment 15 is arranged to act on the serge 3 in several directions of translation of the plane of the resonator 1 and in the direction of the height.
  • the stop 16 is arranged to act on the serge 3 in the direction of the height.
  • the stops 15, 16 are driven into the oscillator bridge 11 and can therefore be adjusted in height to ensure an ideal operating clearance.
  • the abutments 15, 16 could, however, be in one piece with the oscillator bridge 11.
  • the serge 3 of the resonator 1 according to the invention can be equipped with flyweights 17 for adjusting the moment of inertia of the movable rigid part 3, 5, 6.
  • the resonator 1 may be entirely monolithic and made for example of silicon or any other suitable material according to the technique of deep reactive ionic etching ("DRIE") (Deep Reactive Ion Etching), in nickel, nickel alloy or any other material suitable for LIGA (lithography, electroplating, molding), steel, copper-beryllium, nickel silver or other metallic alloy by milling, electroerosion or 3D printing, in metallic glass by molding, or glass, sapphire or any other suitable material according to the laser micro-structuring technique coupled with chemical etching (eg FEMTOPRINT®).
  • DRIE deep reactive ionic etching
  • the coplanar parts that are the base 2, the serge 3, the elastic member 4 and the organ 5 are made together so as to form a monolithic piece, for example according to one of the aforementioned techniques such as the DRIE or LIGA technique, then the peg 6, made of the same material or another material, is assembled at the same time.
  • support member 5 can be introduced into a hole 5d previously formed in the end 5c of the support member 5 and be fixed there for example by gluing or brazing.
  • the assembly 2, 3, 4, 5 and the pin 6 are both made of silicon.
  • the blades 4a, 4b forming the elastic member 4 are preferably oriented each in a crystalline direction in which the modulus of elasticity is the lowest.
  • the blades 4a, 4b are each oriented in a crystalline direction of the family ⁇ 100>. In this way, for a given stiffness of the elastic member 4, the thickness of the blades 4a, 4b may be larger, which facilitates the manufacture.
  • All or part of the surface of the resonator 1 may be covered with one or more layers.
  • a thermal compensation layer typically made of silicon dioxide in the case of a silicon assembly 2, 3, 4, 5, over the entire resonator 1 or at least on the elastic member 4 in order to compensate the thermal variations of the stiffness of the elastic member 4.

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

Abstract

Le résonateur horloger (1) selon l'invention comprend une base (2), une serge (3), un organe élastique (4) et une cheville (6). L'organe élastique (4) relie la serge (3) à la base (2) et guide des oscillations de la serge (3) par rapport à la base (2) autour d'un axe de rotation virtuel (A). La cheville (6) est destinée à coopérer avec une fourchette (7a) d'un échappement (7, 8) pour l'entretien des oscillations. Ce résonateur (1) est caractérisé en ce que la cheville (6) est portée par une extrémité libre (5c) d'un organe de support (5) s'étendant depuis la serge (3) vers l'axe de rotation virtuel (A) et formant avec la serge (3) une partie rigide.The clock resonator (1) according to the invention comprises a base (2), a serge (3), an elastic member (4) and an ankle (6). The elastic member (4) connects the serge (3) to the base (2) and guides oscillations of the serge (3) relative to the base (2) around a virtual axis of rotation (A). The pin (6) is intended to cooperate with a fork (7a) of an exhaust (7, 8) for the maintenance of oscillations. This resonator (1) is characterized in that the pin (6) is carried by a free end (5c) of a support member (5) extending from the serge (3) towards the virtual axis of rotation ( A) and forming with the serge (3) a rigid part.

Description

La présente invention concerne un résonateur horloger à guidage flexible destiné à servir de base de temps à un mouvement horloger, à l'instar d'un balancier-spiral. Par rapport aux balanciers-spiraux, les résonateurs à guidage flexible sont avantageux en ce qu'ils sont dépourvus d'axe de rotation physique et suppriment donc les frottements engendrés par la rotation d'un tel axe.The present invention relates to a flexible guide clock resonator intended to serve as a time base for a watch movement, like a sprung balance. Compared to the balance-springs, the flexible guide resonators are advantageous in that they have no axis of physical rotation and thus eliminate the friction generated by the rotation of such an axis.

On connaît des résonateurs à guidage flexible, tels que celui décrit dans le brevet EP 1736838 ou le résonateur Zenith Defy Lab, dont les oscillations sont entretenues par un échappement spécifique relié au résonateur par des lames flexibles.Flexible guide resonators, such as that described in the patent, are known. EP 1736838 or the Zenith Defy Lab resonator, whose oscillations are maintained by a specific exhaust connected to the resonator by flexible blades.

D'autres résonateurs à guidage flexible ont été décrits qui sont destinés à être entretenus par des échappements classiques du type échappement à ancre suisse. Plus particulièrement, la demande de brevet WO 2012/010408 décrit, et illustre à sa figure 4, un résonateur à guidage flexible comprenant, dans un même plan, une partie rigide centrale, une partie rigide intermédiaire, une partie rigide d'ancrage, des premiers moyens de rappel élastique formant une liaison élastique entre la partie rigide centrale et la partie rigide intermédiaire et des deuxièmes moyens de rappel élastique formant une liaison élastique entre la partie rigide intermédiaire et la partie rigide d'ancrage. Une cheville est reliée à la partie rigide centrale pour coopérer avec la fourchette d'une ancre d'échappement. Ce résonateur est très spécifique et l'utilisation d'une telle cheville reliée à une partie rigide centrale ne semble pas applicable à d'autres types de résonateurs à guidage flexible tels que les résonateurs à lames croisées. D'autre part, l'ancre est située entre deux lames des premiers moyens de rappel élastique et dispose de peu de place pour effectuer ses oscillations, ce qui crée des risques de collision susceptibles de perturber le fonctionnement du résonateur.Other flexible guide resonators have been described which are intended to be serviced by conventional escapements of the Swiss anchor escapement type. More particularly, the patent application WO 2012/010408 describes, and illustrates to figure 4 a flexible guide resonator comprising, in the same plane, a central rigid portion, an intermediate rigid portion, a rigid anchoring portion, first elastic return means forming an elastic connection between the central rigid portion and the intermediate rigid portion and second elastic return means forming an elastic connection between the intermediate rigid portion and the rigid anchoring portion. An anchor is connected to the central rigid portion to cooperate with the fork of an escapement anchor. This resonator is very specific and the use of such an anchor connected to a central rigid part does not seem applicable to other types of flexible guide resonators such as cross-blade resonators. On the other hand, the anchor is located between two blades of the first resilient return means and has little room for its oscillations, which creates the risk of collision likely to disturb the operation of the resonator.

De manière générale, l'état de la technique ne propose pas de résonateur à guidage flexible pouvant être entretenu par un échappement classique de manière optimisée.In general, the state of the art does not propose a flexible guide resonator that can be serviced by a conventional exhaust in an optimized manner.

La présente invention vise à satisfaire, en partie au moins, ce besoin.The present invention aims at satisfying, in part at least, this need.

A cette fin, il est proposé un résonateur horloger comprenant une base, une serge, un organe élastique et une cheville, l'organe élastique reliant la serge à la base et guidant des oscillations de la serge par rapport à la base autour d'un axe de rotation virtuel, la cheville étant destinée à coopérer avec une fourchette d'un échappement pour l'entretien desdites oscillations, caractérisé en ce que la cheville est portée par une extrémité libre d'un organe de support s'étendant depuis la serge vers l'axe de rotation virtuel et formant avec la serge une partie rigide.To this end, there is provided a clock resonator comprising a base, a serge, an elastic member and an ankle, the elastic member connecting the serge to the base and guiding oscillations of the serge relative to the base around a virtual axis of rotation, the pin being intended to cooperate with a fork of an escapement for the maintenance of said oscillations, characterized in that the pin is carried by a free end of a support member extending from the serge to the virtual axis of rotation and forming with the serge a rigid part.

Cet agencement permet une interaction directe entre l'échappement et la partie rigide mobile du résonateur, comme pour l'entretien des oscillations d'un balancier-spiral. L'organe de support permet de placer la cheville à un endroit proche de l'axe de rotation virtuel qui est favorable notamment pour l'angle de levée et/ou pour diminuer les perturbations liées aux chocs verticaux.This arrangement allows a direct interaction between the exhaust and the movable rigid part of the resonator, as for the maintenance of the oscillations of a sprung balance. The support member makes it possible to place the dowel at a location close to the virtual axis of rotation which is favorable in particular for the lifting angle and / or for reducing disturbances related to vertical shocks.

Selon une autre caractéristique avantageuse de l'invention, la cheville est située, en partie au moins, hors de l'épaisseur de la serge pour pouvoir coopérer avec la fourchette de l'échappement sans collision possible entre le résonateur et l'échappement.According to another advantageous characteristic of the invention, the pin is located, at least in part, out of the thickness of the serge to be able to cooperate with the fork of the escapement without possible collision between the resonator and the exhaust.

La présente invention propose en outre un oscillateur horloger comprenant le résonateur défini ci-dessus et un échappement, ainsi qu'un procédé de fabrication du résonateur.The present invention further provides a clock oscillator comprising the resonator defined above and an exhaust, and a method of manufacturing the resonator.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée suivante faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en perspective de dessous d'un résonateur horloger selon un premier mode de réalisation de l'invention ;
  • la figure 2 est une vue de profil de ce résonateur ;
  • la figure 3 est une vue plane de dessus de ce résonateur ;
  • la figure 4 est une vue en perspective de dessous d'un oscillateur horloger comprenant le résonateur illustré aux figures 1 à 3 et un échappement ;
  • la figure 5 est une vue en perspective de dessus de cet oscillateur ;
  • la figure 6 est une vue de profil de cet oscillateur ;
  • la figure 7 est une vue plane de dessus d'un oscillateur horloger comprenant un résonateur selon un deuxième mode de réalisation de l'invention, cette figure montrant en outre un pont d'oscillateur servant de support à l'axe de rotation d'une ancre d'échappement ;
  • la figure 8 est une vue en coupe, prise suivant la ligne BB de la figure 7, de l'oscillateur illustré à la figure 7, cette figure montrant en outre le pont d'oscillateur précité et une platine sur laquelle est montée l'oscillateur.
Other features and advantages of the present invention will appear on reading the following detailed description given with reference to the accompanying drawings in which:
  • the figure 1 is a perspective view from below of a clock resonator according to a first embodiment of the invention;
  • the figure 2 is a profile view of this resonator;
  • the figure 3 is a plan view from above of this resonator;
  • the figure 4 is a perspective view from below of a clock oscillator comprising the resonator illustrated in FIGS. Figures 1 to 3 and an exhaust;
  • the figure 5 is a perspective view from above of this oscillator;
  • the figure 6 is a profile view of this oscillator;
  • the figure 7 is a plan view from above of a clock oscillator comprising a resonator according to a second embodiment of the invention, this figure also showing an oscillator bridge serving to support the axis of rotation of an anchor exhaust;
  • the figure 8 is a sectional view, taken along line BB of the figure 7 , of the oscillator illustrated in figure 7 , this figure also showing the aforementioned oscillator bridge and a stage on which the oscillator is mounted.

En référence aux figures 1 à 3, un résonateur 1 selon un premier mode de réalisation de l'invention, destiné à former la base de temps d'un mouvement horloger, notamment d'un mouvement de montre-bracelet, comprend une base 2, une serge 3 et un organe élastique 4 reliant la serge 3 à la base 2.With reference to Figures 1 to 3 , a resonator 1 according to a first embodiment of the invention, intended to form the time base of a watch movement, in particular a wristwatch movement, comprises a base 2, a serge 3 and an elastic member 4 connecting the serge 3 to the base 2.

La base 2 peut être en une partie, comme représenté, ou en deux parties séparées. Elle est destinée à être fixée sur un support fixe ou mobile tel que la platine du mouvement ou une cage de tourbillon.The base 2 may be in one part, as shown, or in two separate parts. It is intended to be fixed on a fixed or mobile support such as the movement stage or a tourbillon cage.

La serge 3 est suspendue à la base 2 par l'organe élastique 4, c'est-à-dire n'est tenue que par l'organe élastique 4. Elle est de préférence continue, pour favoriser son inertie par rapport à sa masse, mais pourrait être sous la forme d'un anneau interrompu. La serge 3 est coplanaire avec la base 2 et l'entoure, en partie au moins.The serge 3 is suspended at the base 2 by the elastic member 4, that is to say is held only by the elastic member 4. It is preferably continuous, to promote its inertia compared to its mass but could be in the form of an interrupted ring. The serge 3 is coplanar with the base 2 and surrounds it, in part at least.

L'organe élastique 4 sert de moyen de guidage guidant la serge 3 en rotation par rapport à la base 2 autour d'un axe de rotation virtuel A correspondant sensiblement à l'axe géométrique de la serge 3. L'organe élastique 4 sert aussi de moyen de rappel élastique rappelant la serge 3 dans une position angulaire de repos par rapport à la base 2.The elastic member 4 serves as guiding means guiding the serge 3 in rotation relative to the base 2 about a virtual axis of rotation A substantially corresponding to the geometric axis of the serge 3. The elastic member 4 also serves of elastic return means reminding serge 3 in an angular position of rest relative to the base 2.

Dans l'exemple illustré, l'organe élastique 4 est du type à lames croisées séparées : il comprend deux lames élastiques 4a, 4b se croisant en vue plane de dessus ou de dessous du résonateur 1 mais s'étendant dans deux plans parallèles différents pour se croiser sans contact. Les extrémités de chacune de ces lames 4a, 4b sont jointes respectivement à la base 2 et à la serge 3. Le croisement entre ces lames 4a, 4b définit l'axe de rotation virtuel A. Ce type de guidage flexible est avantageux en ce qu'il présente une faible raideur et autorise une relativement grande amplitude d'oscillation de la serge 3. La base 2 peut être telle que décrite dans la demande de brevet WO 2017/055983 de la demanderesse, pour permettre un réglage de la position du point de croisement des lames 4a, 4b.In the example illustrated, the elastic member 4 is of the separated cross-leaf type: it comprises two elastic blades 4a, 4b crossing in plan view from above or below the resonator 1 but extending in two different parallel planes for to cross without contact. The ends of each of these blades 4a, 4b are respectively joined to the base 2 and to the serge 3. The crossing between these blades 4a, 4b defines the virtual axis of rotation A. This type of flexible guidance is advantageous in that it has a low stiffness and allows a relatively large amplitude of oscillation of the serge 3. The base 2 can be as described in the patent application WO 2017/055983 of the applicant, to allow adjustment of the position of the cross point of the blades 4a, 4b.

Toutefois, d'autres types de guidage flexible pourraient être utilisés, tels que des lames croisées non séparées (s'étendant dans un même plan et se croisant donc physiquement) ou un pivot à centre de rotation déporté dit « RCC » (Remote Center Compliance).However, other types of flexible guiding could be used, such as crossed blades not separated (extending in the same plane and therefore physically crossing) or a pivot with a remote center of rotation called "RCC" (Remote Center Compliance ).

Conformément à l'invention, un organe de support 5 constitué d'un ou plusieurs bras rigides 5a, 5b s'étend, de préférence dans le plan de la serge 3, de préférence radialement, depuis la face intérieure 3a de la serge 3 vers l'axe de rotation virtuel A jusqu'à une extrémité libre 5c. Dans le premier mode de réalisation, l'organe de support 5 est constitué de deux bras rigides 5a, 5b qui se rejoignent pour former l'extrémité libre 5c. Cette extrémité libre 5c porte une cheville ou ellipse 6 dont l'axe est parallèle à l'axe de rotation virtuel A et perpendiculaire au plan de la serge 3. Dans l'exemple représenté, la cheville 6 a la forme classique d'un demi-cylindre, mais elle pourrait avoir une autre forme. Comme visible à la figure 2, la cheville 6 dépasse de l'épaisseur e de la serge 3, plus précisément du plan que définit la face inférieure 3b de la serge 3.According to the invention, a support member 5 consisting of one or more rigid arms 5a, 5b extends, preferably in the plane of the serge 3, preferably radially, from the inner face 3a of the serge 3 towards the virtual axis of rotation A to a free end 5c. In the first embodiment, the support member 5 consists of two rigid arms 5a, 5b which meet to form the free end 5c. This free end 5c carries an ankle or ellipse 6 whose axis is parallel to the virtual axis of rotation A and perpendicular to the plane of the serge 3. In the example shown, the peg 6 has the classic shape of a half -cylinder, but it could have another form. As visible at figure 2 , the peg 6 exceeds the thickness e of the serge 3, more precisely the plane defined by the lower face 3b of the serge 3.

La partie de la cheville 6 située hors de l'épaisseur e coopère de manière classique en soi avec la fourchette 7a d'une ancre d'échappement 7, par exemple d'une ancre suisse. Aux figures 4 à 6 on peut voir cette ancre 7 située sous le résonateur 1 et qui interagit avec la roue d'échappement 8a d'un mobile d'échappement 8 elle-même située sous le résonateur 1 et sa serge 3. L'échappement 7, 8, monté sur le même support que la base 2, entretient les oscillations de la serge 3 par rapport à la base 2 et forme avec le résonateur 1 un oscillateur. En étant disposés dans un plan parallèle distinct de celui du résonateur 1, l'ancre 7 et la roue d'échappement 8 ne gênent pas les oscillations de la serge 3 quelle que soit l'amplitude de ces oscillations, qui peut donc être élevée. L'interaction directe entre l'échappement 7, 8 et la partie mobile rigide du résonateur 1, comprenant la serge 3, l'organe de support 5 et la cheville 6, contribue à l'obtention d'un bon rendement.The part of the peg 6 situated outside the thickness e cooperates in a conventional manner with the fork 7a of an escape anchor 7, for example a Swiss anchor. the Figures 4 to 6 we can see this anchor 7 located under the resonator 1 and which interacts with the escape wheel 8a of an exhaust mobile 8 itself located under the resonator 1 and its serge 3. The exhaust 7, 8, mounted on the same support as the base 2, maintains the oscillations of the serge 3 relative to the base 2 and forms with the resonator 1 an oscillator. Being disposed in a plane parallel to that of the resonator 1, the anchor 7 and the escape wheel 8 do not interfere with the oscillations of the serge 3 regardless of the amplitude of these oscillations, which can be high. The direct interaction between the exhaust 7, 8 and the rigid moving part of the resonator 1, comprising the serge 3, the support member 5 and the pin 6, contributes to obtaining a good performance.

La longueur radiale de l'organe de support 5 est choisie notamment en fonction de l'angle de levée souhaité pour le résonateur 1, c'est-à-dire l'angle de la serge 3 pendant lequel la cheville 6 est en contact avec la fourchette 7a. A entraxe constant de l'ancre 7 et du résonateur 1, disposer la cheville 6 près de l'axe de rotation virtuel A augmente l'angle de levée alors que l'éloigner de l'axe de rotation virtuel A diminue l'angle de levée. Avec un échappement à ancre suisse, si l'on souhaite favoriser le rendement, il est généralement avantageux d'avoir un angle de levée relativement grand. Si en revanche on souhaite favoriser la chronométrie, un petit angle de levée est généralement préférable. Avec un résonateur à guidage flexible comme celui de l'invention, la raideur du guidage flexible et la fréquence sont élevées par rapport à la raideur de spiral et la fréquence d'un balancier-spiral, si bien que les perturbations causées par l'échappement sont beaucoup plus faibles. On pourra donc privilégier le rendement par rapport à la chronométrie et placer la cheville 6 près de l'axe de rotation virtuel A. Il est aussi important que l'amplitude d'oscillation du résonateur soit supérieure à l'angle de levée. Dans des exemples de réalisation de l'invention, l'angle de levée est deux fois plus petit que l'amplitude d'oscillation du résonateur 1 et la fréquence d'oscillation est de plusieurs dizaines de Hertz.The radial length of the support member 5 is chosen in particular according to the desired angle of lift for the resonator 1, that is to say the angle of the serge 3 during which the pin 6 is in contact with the the fork 7a. At constant spacing between the anchor 7 and the resonator 1, arranging the pin 6 close to the virtual axis of rotation A increases the angle of lift, while moving it away from the virtual axis of rotation A decreases the angle of rotation. lifted. With a Swiss lever escapement, if one wishes to promote the yield, it is generally advantageous to have a relatively large lifting angle. If, on the other hand, it is desired to favor chronometry, a small angle of lift is generally preferable. With a flexible guide resonator such as that of the invention, the stiffness of the flexible guide and the frequency are high compared to the spiral stiffness and the frequency of a balance spring, so that the disturbances caused by the exhaust are much weaker. It will therefore be possible to give priority to the efficiency with respect to chronometry and to place the peg 6 close to the virtual axis of rotation A. It is also important that the amplitude of oscillation of the resonator is greater than the angle of lift. In exemplary embodiments of the invention, the lifting angle is two times smaller than the oscillation amplitude of the resonator 1 and the oscillation frequency is several tens of Hertz.

De préférence, comme cela est visible sur la figure 3, en vue plane de dessus ou de dessous du résonateur 1 et lorsque la serge 3 est dans sa position de repos, la cheville 6 est traversée symétriquement par un axe de symétrie D1 de l'organe élastique 4, permettant au résonateur 1 d'être entretenu symétriquement, l'organe élastique 4 étant sollicité de manière identique lors des deux alternances d'une oscillation. Cette caractéristique améliore la chronométrie.Preferably, as is visible on the figure 3 , in plan view from above or below the resonator 1 and when the serge 3 is in its rest position, the peg 6 is traversed symmetrically by an axis of symmetry D1 of the elastic member 4, allowing the resonator 1 to be symmetrically maintained, the elastic member 4 being biased identically during the two alternations of an oscillation. This feature improves chronometry.

De préférence également, en vue plane de dessus ou de dessous du résonateur 1 et lorsque la serge 3 est dans sa position de repos, la cheville 6 est située du même côté d'une droite D2, perpendiculaire à l'axe de symétrie D1 et coupant l'axe de rotation virtuel A, que tous les points d'attache de l'organe élastique 4 à la serge 3, la base 2 étant, elle, située de l'autre côté de cette droite D2. Dans l'exemple illustré, lesdits points d'attache sont au nombre de deux et désignés par 4c, 4d. De la sorte, la cheville 6 est située dans la zone du résonateur 1 qui se déplace le moins en cas de choc vertical (parallèle à l'axe de rotation virtuel A) reçu par le résonateur 1, et sa coopération avec la fourchette 7a ne sera pas, ou sera peu, affectée.Also preferably, in plan view from above or below the resonator 1 and when the serge 3 is in its rest position, the pin 6 is located on the same side of a straight line D2, perpendicular to the axis of symmetry D1 and cutting the virtual axis of rotation A, all the attachment points of the elastic member 4 to the serge 3, the base 2 being located on the other side of this line D2. In the illustrated example, said attachment points are two in number and designated 4c, 4d. In this way, the pin 6 is located in the zone of the resonator 1 which moves least in the event of a vertical impact (parallel to the virtual axis of rotation A) received by the resonator 1, and its cooperation with the fork 7a does not occur. will not be, or will be little, affected.

Le résonateur 1 est équilibré en ce sens que le centre de masse de sa partie rigide mobile 3, 5, 6 est situé sensiblement sur l'axe de rotation virtuel A. Afin de compenser le balourd que produisent l'organe de support 5 et la cheville 6, un évidement 3c (cf. figure 1) est pratiqué dans la face inférieure 3b de la serge 3, dans la zone de la serge 3 depuis laquelle s'étend l'organe de support 5. De plus, pour faciliter cet équilibrage du résonateur 1, l'organe de support 5 est de préférence symétrique par rapport à l'axe de symétrie D1 de l'organe élastique 4 en vue plane de dessus ou de dessous du résonateur 1 et lorsque la serge 3 est dans sa position de repos (cf. figure 3).The resonator 1 is balanced in that the center of mass of its movable rigid part 3, 5, 6 is situated substantially on the virtual axis of rotation A. In order to compensate for the unbalance produced by the support member 5 and the ankle 6, a recess 3c (cf. figure 1 ) is formed in the lower face 3b of the serge 3, in the region of the serge 3 from which the support member 5 extends. Moreover, to facilitate this balancing of the resonator 1, the support member 5 is preferably symmetrical with respect to the axis of symmetry D1 of the elastic member 4 in plan view from above or below the resonator 1 and when the serge 3 is in its rest position (cf. figure 3 ).

Aux figures 7 et 8 est représenté un résonateur 1 selon un second mode de réalisation de l'invention. Le résonateur 1 selon ce second mode de réalisation diffère de celui selon le premier mode de réalisation essentiellement par la forme de son organe de support 5, de sa base 2 et de sa serge 3. En particulier, l'organe de support 5 est constitué ici des deux bras 5a, 5b, de forme différente de celle du premier mode de réalisation, et d'un troisième bras 5e qui relie ces deux bras 5a, 5b. Les caractéristiques de symétrie décrites ci-dessus en relation avec le premier mode de réalisation se retrouvent dans le second mode de réalisation.the Figures 7 and 8 is represented a resonator 1 according to a second embodiment of the invention. The resonator 1 according to this second embodiment differs from that according to the first embodiment essentially by the shape of its support member 5, its base 2 and its serge 3. In particular, the support member 5 is constituted here of the two arms 5a, 5b, of different form from that of the first embodiment, and a third arm 5e which connects these two arms 5a, 5b. The symmetry characteristics described above in relation to the first embodiment are found in the second embodiment.

Avantageusement, dans la présente invention, l'axe de rotation 7b de l'ancre 7 traverse l'ouverture centrale que définit la serge 3, en d'autres termes est entouré par la serge 3, comme cela est visible aux figures 5 à 8. Cette caractéristique rend l'oscillateur 1, 7, 8 compact en vue plane de dessus ou de dessous tout en permettant à l'ancre 7 d'avoir un long axe de rotation 7b, plus long que celui des ancres interagissant avec des balanciers-spiraux. Un long axe de rotation améliore le guidage de l'ancre, la rendant moins sujette à des déplacements hors de son plan.Advantageously, in the present invention, the axis of rotation 7b of the anchor 7 passes through the central opening defined by the serge 3, in other words is surrounded by the serge 3, as can be seen in FIG. Figures 5 to 8 . This characteristic makes the oscillator 1, 7, 8 compact in plan view from above or below while allowing the anchor 7 to have a long axis of rotation 7b, longer than that of the anchors interacting with balance-springs . A long axis of rotation improves the guidance of the anchor, making it less prone to movements out of its plane.

On peut voir à la figure 8 que l'axe de rotation 7b de l'ancre 7 a ses pivots qui tournent dans des paliers 9a, 9b prévus respectivement dans la platine 10 du mouvement horloger et dans un pont d'oscillateur 11 situé au-dessus du résonateur 1 et fixé par des vis 11a à la platine 10. Ce montage de l'ancre 7 entre la platine 10 et le pont d'oscillateur 11 permet d'éviter le recours au traditionnel pont d'ancre interposé entre la platine et le résonateur. L'ancre 7 et le résonateur 1 peuvent ainsi être proches l'un de l'autre dans la direction de la hauteur (direction de l'axe de rotation virtuel A), permettant à la cheville 6 d'être plus courte. Une courte cheville 6 diminue le risque de basculement du résonateur 1 autour de l'axe BB de la figure 7 lors des contacts entre la cheville 6 et la fourchette 7a ainsi que l'effet d'un éventuel défaut de perpendicularité de la cheville 6. Le positionnement de la cheville 6 dans la fourchette 7a et le fonctionnement de l'oscillateur peuvent donc être particulièrement précis.We can see at the figure 8 that the axis of rotation 7b of the anchor 7 has its pivots which rotate in bearings 9a, 9b respectively provided in the plate 10 of the watch movement and in an oscillator bridge 11 located above the resonator 1 and fixed by screws 11a to the plate 10. This mounting of the anchor 7 between the plate 10 and the oscillator bridge 11 avoids the use of the traditional anchor bridge interposed between the plate and the resonator. The anchor 7 and the resonator 1 can thus be close to each other in the direction of the height (direction of the virtual axis of rotation A), allowing the peg 6 to be shorter. A short peg 6 reduces the risk of tilting of the resonator 1 around the axis BB of the figure 7 during the contacts between the pin 6 and the fork 7a and the effect of a possible defect perpendicularity of the pin 6. The positioning of the pin 6 in the fork 7a and the operation of the oscillator can be particularly accurate .

L'axe de rotation 7b de l'ancre 7 traverse l'ouverture centrale de la serge 3 entre les bras 5a, 5b de l'organe de support 5. Ainsi, l'axe 7b peut servir de butée à ces bras 5a, 5b pour autoriser des oscillations de la serge 3 seulement dans une plage angulaire prédéterminée et empêcher qu'une amplitude d'oscillation trop importante de la serge 3 ou qu'un choc conduise à un dépassement de la limite élastique de l'organe élastique 4.The axis of rotation 7b of the anchor 7 passes through the central opening of the serge 3 between the arms 5a, 5b of the support member 5. Thus, the axis 7b can serve as a stop to these arms 5a, 5b to allow oscillations of the serge 3 only in a predetermined angular range and prevent too high amplitude oscillation of the serge 3 or that a shock leads to exceeding the yield strength of the serge 3 elastic member 4.

L'ancre 7 utilisée dans la présente invention peut être remplacée par un autre type d'organe de transmission d'énergie à fourchette apte à communiquer des impulsions d'énergie mécanique à la cheville 6. L'ancre 7 peut par exemple être remplacée par la bascule de détente d'un échappement à percussion tel que décrit dans la demande de brevet WO 2018/002778 de la demanderesse.The anchor 7 used in the present invention can be replaced by another type of fork energy transmission member capable of communicating pulses of mechanical energy to the pin 6. The anchor 7 can for example be replaced by the trigger rocker of a percussion escapement as described in the patent application WO 2018/002778 of the plaintiff.

Comme cela est montré à la figure 8, la base 2 du résonateur 1 est montée sur la platine 10 par l'intermédiaire d'un pont 12. En variante, néanmoins, elle pourrait être montée directement sur la platine 10. La fixation de la base 2 et du pont 12 à la platine 10 est assurée par des goupilles de positionnement 13 et des vis de maintien 14.As shown in figure 8 , the base 2 of the resonator 1 is mounted on the plate 10 via a bridge 12. Alternatively, however, it could be mounted directly on the plate 10. The attachment of the base 2 and the bridge 12 to the plate 10 is provided by positioning pins 13 and holding screws 14.

Dans une variante de l'invention, les paliers 9b et 9a dans lesquels tournent les pivots de l'axe de rotation 7b de l'ancre 7 sont prévus respectivement dans les ponts 11 et 12, permettant à ces ponts, à l'ancre 7 et au résonateur 1 de former ensemble un module, module dont le mobile d'échappement 8 peut aussi faire partie en pivotant lui aussi dans les ponts 11, 12.In a variant of the invention, the bearings 9b and 9a in which the pivots of the axis of rotation 7b of the anchor 7 rotate are provided respectively in the bridges 11 and 12, allowing these bridges to anchor 7. and the resonator 1 to form together a module, the module of which the escape mobile 8 can also be part by pivoting itself also in the bridges 11, 12.

Avantageusement, des butées 15, 16 solidaires du pont d'oscillateur 11 limitent les déplacements indésirables de la serge 3 lors de chocs. La butée 15 est agencée pour agir sur la serge 3 dans plusieurs directions de translation du plan du résonateur 1 et dans la direction de la hauteur. La butée 16 est agencée pour agir sur la serge 3 dans la direction de la hauteur. Dans l'exemple représenté, les butées 15, 16 sont chassées dans le pont d'oscillateur 11 et peuvent donc être réglées en hauteur pour assurer un jeu idéal de fonctionnement. Les butées 15, 16 pourraient toutefois être monobloc avec le pont d'oscillateur 11.Advantageously, stops 15, 16 integral with the oscillator bridge 11 limit undesirable movements of the serge 3 during shocks. The abutment 15 is arranged to act on the serge 3 in several directions of translation of the plane of the resonator 1 and in the direction of the height. The stop 16 is arranged to act on the serge 3 in the direction of the height. In the example shown, the stops 15, 16 are driven into the oscillator bridge 11 and can therefore be adjusted in height to ensure an ideal operating clearance. The abutments 15, 16 could, however, be in one piece with the oscillator bridge 11.

A l'instar des balanciers classiques, la serge 3 du résonateur 1 selon l'invention peut être équipée de masselottes 17 permettant le réglage du moment d'inertie de la partie rigide mobile 3, 5, 6.Like conventional rockers, the serge 3 of the resonator 1 according to the invention can be equipped with flyweights 17 for adjusting the moment of inertia of the movable rigid part 3, 5, 6.

A l'exception des éventuelles masselottes qui sont rapportées, le résonateur 1 peut être entièrement monolithique et réalisé par exemple en silicium ou dans toute autre matière appropriée selon la technique de gravure ionique réactive profonde dite « DRIE » (Deep Reactive Ion Etching), en nickel, alliage de nickel ou toute autre matière appropriée selon la technique LIGA (lithographie, galvanoplastie, moulage), en acier, cuivre-béryllium, maillechort ou autre alliage métallique par fraisage, par électroérosion ou par impression 3D, en verre métallique par moulage, ou en verre, saphir ou toute autre matière appropriée selon la technique de micro-structuration laser couplée à une attaque chimique (par exemple FEMTOPRINT®).With the exception of any flyweights that are reported, the resonator 1 may be entirely monolithic and made for example of silicon or any other suitable material according to the technique of deep reactive ionic etching ("DRIE") (Deep Reactive Ion Etching), in nickel, nickel alloy or any other material suitable for LIGA (lithography, electroplating, molding), steel, copper-beryllium, nickel silver or other metallic alloy by milling, electroerosion or 3D printing, in metallic glass by molding, or glass, sapphire or any other suitable material according to the laser micro-structuring technique coupled with chemical etching (eg FEMTOPRINT®).

De préférence toutefois, afin de faciliter la fabrication et éviter le recours à des procédés multi-niveaux compliqués, notamment de plus de deux niveaux, les parties coplanaires que sont la base 2, la serge 3, l'organe élastique 4 et l'organe de support 5 sont réalisées ensemble de sorte à former une pièce monolithique, par exemple selon l'une des techniques susmentionnées telle que la technique DRIE ou LIGA, puis la cheville 6, réalisée dans le même matériau ou un autre matériau, est assemblée à l'organe de support 5. Pour ce faire, la cheville 6 peut être introduite dans un trou 5d préalablement formé dans l'extrémité 5c de l'organe de support 5 et y être fixée par exemple par collage ou brasage. Dans un exemple de réalisation préféré, l'ensemble 2, 3, 4, 5 et la cheville 6 sont tous deux en silicium.Preferably, however, in order to facilitate the manufacture and avoid the use of complicated multi-level processes, especially of more than two levels, the coplanar parts that are the base 2, the serge 3, the elastic member 4 and the organ 5 are made together so as to form a monolithic piece, for example according to one of the aforementioned techniques such as the DRIE or LIGA technique, then the peg 6, made of the same material or another material, is assembled at the same time. support member 5. To do this, the pin 6 can be introduced into a hole 5d previously formed in the end 5c of the support member 5 and be fixed there for example by gluing or brazing. In a preferred embodiment, the assembly 2, 3, 4, 5 and the pin 6 are both made of silicon.

Dans le cas où le matériau choisi pour le résonateur 1, plus particulièrement pour l'organe élastique 4, présente un module d'élasticité anisotrope, comme par exemple le silicium découpé selon un plan de la famille {100} ou selon un plan de la famille {110}, les lames 4a, 4b formant l'organe élastique 4 sont de préférence orientées chacune dans une direction cristalline dans laquelle le module d'élasticité est le plus faible. Par exemple, dans le cas du silicium {100} ou {110} les lames 4a, 4b sont chacune orientées selon une direction cristalline de la famille <100>. De la sorte, pour une raideur donnée de l'organe élastique 4, l'épaisseur des lames 4a, 4b peut être plus grande, ce qui facilite la fabrication.In the case where the material chosen for the resonator 1, more particularly for the elastic member 4, has an anisotropic modulus of elasticity, for example silicon cut in a plane of the family {100} or in a plane of the family {110}, the blades 4a, 4b forming the elastic member 4 are preferably oriented each in a crystalline direction in which the modulus of elasticity is the lowest. For example, in the case of silicon {100} or {110} the blades 4a, 4b are each oriented in a crystalline direction of the family <100>. In this way, for a given stiffness of the elastic member 4, the thickness of the blades 4a, 4b may be larger, which facilitates the manufacture.

Tout ou partie de la surface du résonateur 1 peut être recouvert d'une ou plusieurs couches. On peut notamment prévoir une couche de compensation thermique, typiquement en dioxyde de silicium dans le cas d'un ensemble 2, 3, 4, 5 en silicium, sur tout le résonateur 1 ou au moins sur l'organe élastique 4 afin de compenser les variations thermiques de la raideur de l'organe élastique 4.All or part of the surface of the resonator 1 may be covered with one or more layers. In particular, it is possible to provide a thermal compensation layer, typically made of silicon dioxide in the case of a silicon assembly 2, 3, 4, 5, over the entire resonator 1 or at least on the elastic member 4 in order to compensate the thermal variations of the stiffness of the elastic member 4.

Claims (20)

Résonateur horloger (1) comprenant une base (2), une serge (3), un organe élastique (4) et une cheville (6), l'organe élastique (4) reliant la serge (3) à la base (2) et guidant des oscillations de la serge (3) par rapport à la base (2) autour d'un axe de rotation virtuel (A), la cheville (6) étant destinée à coopérer avec une fourchette (7a) d'un échappement (7, 8) pour l'entretien desdites oscillations, caractérisé en ce que la cheville (6) est portée par une extrémité libre (5c) d'un organe de support (5) s'étendant depuis la serge (3) vers l'axe de rotation virtuel (A) et formant avec la serge (3) une partie rigide.Clock resonator (1) comprising a base (2), a serge (3), an elastic member (4) and an ankle (6), the elastic member (4) connecting the serge (3) to the base (2) and guiding oscillations of the serge (3) with respect to the base (2) around a virtual axis of rotation (A), the pin (6) being intended to cooperate with a fork (7a) of an escapement ( 7, 8) for the maintenance of said oscillations, characterized in that the pin (6) is carried by a free end (5c) of a support member (5) extending from the serge (3) towards the virtual axis of rotation (A) and forming with the serge (3) a rigid part. Résonateur horloger (1) selon la revendication 1, caractérisé en ce que la cheville (6) est située, en partie au moins, hors de l'épaisseur (e) de la serge (3).Clock resonator (1) according to claim 1, characterized in that the pin (6) is located, at least in part, out of the thickness (e) of the serge (3). Résonateur horloger (1) selon la revendication 1 ou 2, caractérisé en ce que l'organe de support (5) est monolithique avec la serge (3).Clock resonator (1) according to claim 1 or 2, characterized in that the support member (5) is monolithic with the serge (3). Résonateur horloger (1) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la base (2) et l'organe élastique (4) sont monolithiques avec la serge (3).Clock resonator (1) according to any one of claims 1 to 3, characterized in that the base (2) and the elastic member (4) are monolithic with the serge (3). Résonateur horloger (1) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la cheville (6) est fixée dans un trou (5d) de l'organe de support (5).Clock resonator (1) according to any one of claims 1 to 4, characterized in that the pin (6) is fixed in a hole (5d) of the support member (5). Résonateur horloger (1) selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'en vue plane de dessus ou de dessous du résonateur (1) et lorsque la serge (3) est dans une position de repos par rapport à la base (2), la cheville (6) est traversée symétriquement par un axe de symétrie (D1) de l'organe élastique (4).Clock resonator (1) according to any one of claims 1 to 5, characterized in that in plan view from above or below the resonator (1) and when the serge (3) is in a rest position with respect to the base (2), the peg (6) is traversed symmetrically by an axis of symmetry (D1) of the elastic member (4). Résonateur horloger (1) selon la revendication 6, caractérisé en ce qu'en vue plane de dessus ou de dessous du résonateur (1) et lorsque la serge (3) est dans ladite position de repos par rapport à la base (2), l'organe de support (5) est symétrique par rapport audit axe de symétrie (D1).Clock resonator (1) according to claim 6, characterized in that in plan view from above or below the resonator (1) and when the serge (3) is in said rest position relative to the base (2), the support member (5) is symmetrical with respect to said axis of symmetry (D1). Résonateur horloger (1) selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la serge (3) comprend un évidement (3c) qui compense le balourd qu'apportent l'organe de support (5) et la cheville (6).Clock resonator (1) according to any one of claims 1 to 7, characterized in that the serge (3) comprises a recess (3c) which compensates for the unbalance provided by the support member (5) and the peg ( 6). Résonateur horloger (1) selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'en vue plane de dessus ou de dessous du résonateur (1) et lorsque la serge (3) est dans une position de repos par rapport à la base (2), la cheville (6) est située du même côté d'une droite (D2), perpendiculaire à un axe de symétrie (D1) de l'organe élastique (4) et coupant l'axe de rotation virtuel (A), que tous les points (4c, 4d) d'attache de l'organe élastique (4) à la serge (3).Watchmaker resonator (1) according to one of Claims 1 to 8, characterized in that in plan view from above or below the resonator (1) and when the serge (3) is in a rest position with respect to the base (2), the peg (6) is located on the same side of a line (D2), perpendicular to an axis of symmetry (D1) of the elastic member (4) and intersecting the virtual axis of rotation ( A), that all the points (4c, 4d) of attachment of the elastic member (4) to the serge (3). Résonateur horloger (1) selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la serge (3) est continue.Clock resonator (1) according to any one of claims 1 to 9, characterized in that the serge (3) is continuous. Résonateur horloger (1) selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'organe élastique (4) comprend des première et deuxième lames élastiques croisées (4a, 4b) s'étendant dans des plans parallèles différents.Clock resonator (1) according to any one of claims 1 to 10, characterized in that the elastic member (4) comprises first and second crossed elastic blades (4a, 4b) extending in different parallel planes. Résonateur horloger (1) selon l'une quelconque des revendications 1 à 11, caractérisé en ce que l'organe élastique (4) est réalisé dans un matériau présentant un module d'élasticité anisotrope et comprend des lames élastiques (4a, 4b) s'étendant chacune dans une direction cristallographique du matériau dans laquelle le module d'élasticité est le plus faible.Clock resonator (1) according to any one of claims 1 to 11, characterized in that the elastic member (4) is made of a material having an anisotropic modulus of elasticity and comprises elastic blades (4a, 4b) s each extending in a crystallographic direction of the material in which the modulus of elasticity is the lowest. Oscillateur horloger comprenant un résonateur (1) selon l'une quelconque des revendications 1 à 12 et un échappement (7, 8), l'échappement (7, 8) comprenant une fourchette (7a) agencée pour coopérer avec la cheville (6).Clock oscillator comprising a resonator (1) according to any one of claims 1 to 12 and an escapement (7, 8), the escapement (7, 8) comprising a fork (7a) arranged to cooperate with the pin (6) . Oscillateur horloger selon la revendication 13, caractérisé en ce que la fourchette (7a) est située dans un plan différent de celui de la serge (3).Clock oscillator according to claim 13, characterized in that the fork (7a) is situated in a plane different from that of the serge (3). Oscillateur horloger selon la revendication 14, caractérisé en ce que l'axe de rotation (7b) de la fourchette (7a) est entouré, en partie au moins, par la serge (3).Clock oscillator according to claim 14, characterized in that the axis of rotation (7b) of the fork (7a) is surrounded, at least in part, by the serge (3). Oscillateur horloger selon la revendication 15, caractérisé en ce que l'axe de rotation (7b) de la fourchette (7a) est agencé pour pouvoir servir de butée à l'organe de support (5) dans les deux sens de rotation de la serge (3) afin d'empêcher un dépassement de la limite élastique de l'organe élastique (4).Clock oscillator according to claim 15, characterized in that the axis of rotation (7b) of the fork (7a) is arranged to serve as a stop for the support member (5) in both directions of rotation of the serge (3) to prevent exceeding the elastic limit of the elastic member (4). Oscillateur horloger selon la revendication 15 ou 16, caractérisé en ce que le résonateur (1) est situé entre un pont (11) et la fourchette (7a) et en ce que l'un des deux pivots de l'axe de rotation (7b) de la fourchette (7a) est agencé pour pivoter dans ce pont (11).Clock oscillator according to Claim 15 or 16, characterized in that the resonator (1) is located between a bridge (11) and the fork (7a) and in that that one of the two pivots of the axis of rotation (7b) of the fork (7a) is arranged to pivot in this bridge (11). Oscillateur horloger selon la revendication 17, caractérisé en ce que le pont (11) porte au moins une butée (15, 16) permettant de limiter des déplacements indésirables de la serge (3).Clock oscillator according to claim 17, characterized in that the bridge (11) carries at least one stop (15, 16) for limiting undesirable movements of the serge (3). Oscillateur horloger selon l'une quelconque des revendications 14 à 18, caractérisé en ce que la fourchette (7a) fait partie d'une ancre (7) située dans ledit plan différent de celui de la serge (3).Clock oscillator according to any one of claims 14 to 18, characterized in that the fork (7a) is part of an anchor (7) in said plane different from that of the serge (3). Procédé de fabrication d'un résonateur horloger (1) selon l'une quelconque des revendications 1 à 12, comprenant une première étape consistant à réaliser, d'une part, une pièce monolithique comprenant la base (2), la serge (3), l'organe élastique (4) et l'organe de support (5) et, d'autre part, la cheville (6), et une deuxième étape consistant à assembler la pièce monolithique et la cheville (6).A method of manufacturing a clock resonator (1) according to any one of claims 1 to 12, comprising a first step of producing, on the one hand, a monolithic piece comprising the base (2), the serge (3) , the elastic member (4) and the support member (5) and, secondly, the dowel (6), and a second step of assembling the monolithic piece and the dowel (6).
EP18201466.2A 2017-12-22 2018-10-19 Timepiece resonator with flexible guide Active EP3502784B1 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020100004A1 (en) 2018-11-13 2020-05-22 Patek Philippe Sa Geneve Timepiece comprising two power sources
CN112711183A (en) * 2019-10-24 2021-04-27 斯沃奇集团研究和开发有限公司 Pivot guide device for a pivoting mass and timepiece resonator mechanism
EP3862818A1 (en) 2020-02-06 2021-08-11 Patek Philippe SA Genève Watch comprising a winding mechanism
CN114127641A (en) * 2019-07-12 2022-03-01 百达翡丽日内瓦公司 Method for adjusting a flexible pivot timepiece oscillator
CN115702396A (en) * 2020-07-10 2023-02-14 百达翡丽日内瓦公司 Timepiece oscillator with flexible pivot
EP4250019A1 (en) 2022-03-21 2023-09-27 Patek Philippe SA Genève Timepiece oscillator for extra-flat movement
EP4286959A1 (en) 2022-06-02 2023-12-06 Patek Philippe SA Genève Timepiece oscillator with flexible pivot
EP4310603A1 (en) 2022-07-18 2024-01-24 Patek Philippe SA Genève Timepiece movement

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EP2894520A2 (en) * 2010-07-19 2015-07-15 Nivarox-FAR S.A. Oscillating mechanism with mobile, resilient pivot for energy transmission
CH710025A2 (en) * 2013-12-23 2016-02-29 Eta Sa Manufacture Horlogère Suisse Mechanical watch movement with magnetic escapement.
EP3032352A1 (en) * 2014-12-09 2016-06-15 LVMH Swiss Manufactures SA Timepiece regulator, timepiece movement and timepiece having such a regulator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2894520A2 (en) * 2010-07-19 2015-07-15 Nivarox-FAR S.A. Oscillating mechanism with mobile, resilient pivot for energy transmission
CH710025A2 (en) * 2013-12-23 2016-02-29 Eta Sa Manufacture Horlogère Suisse Mechanical watch movement with magnetic escapement.
EP3032352A1 (en) * 2014-12-09 2016-06-15 LVMH Swiss Manufactures SA Timepiece regulator, timepiece movement and timepiece having such a regulator

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020100004A1 (en) 2018-11-13 2020-05-22 Patek Philippe Sa Geneve Timepiece comprising two power sources
CN114127641A (en) * 2019-07-12 2022-03-01 百达翡丽日内瓦公司 Method for adjusting a flexible pivot timepiece oscillator
CN114127641B (en) * 2019-07-12 2024-03-22 百达翡丽日内瓦公司 Method for adjusting a flexible pivot timepiece oscillator
CN112711183A (en) * 2019-10-24 2021-04-27 斯沃奇集团研究和开发有限公司 Pivot guide device for a pivoting mass and timepiece resonator mechanism
CN112711183B (en) * 2019-10-24 2022-04-12 斯沃奇集团研究和开发有限公司 Pivot guide device for a pivoting mass and timepiece resonator mechanism
EP3862818A1 (en) 2020-02-06 2021-08-11 Patek Philippe SA Genève Watch comprising a winding mechanism
CN115702396A (en) * 2020-07-10 2023-02-14 百达翡丽日内瓦公司 Timepiece oscillator with flexible pivot
EP4250019A1 (en) 2022-03-21 2023-09-27 Patek Philippe SA Genève Timepiece oscillator for extra-flat movement
EP4286959A1 (en) 2022-06-02 2023-12-06 Patek Philippe SA Genève Timepiece oscillator with flexible pivot
EP4310603A1 (en) 2022-07-18 2024-01-24 Patek Philippe SA Genève Timepiece movement

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