EP3191897B1 - Mechanism for synchronization of two timepiece oscillators with a wheel train - Google Patents

Description

Field of the invention

The invention relates to a watchmaking mechanism comprising a plate and, mounted movable, at least pivotally relative to said plate, an escape wheel which pivots about an exhaust axis and is arranged to receive a torque motor, via a gear train, and a first oscillator having a first rigid structure connected to said plate by first elastic return means, said regulator mechanism further comprising at least a second oscillator having a second rigid structure which is connected to said first rigid structure by second elastic return means which are arranged to allow at least a pivotal movement of said second rigid structure relative to said first rigid structure, wherein said second structure comprises guide means arranged to cooperate with complementary guiding means included in said escape wheel, forma and a motion transmission means for synchronizing said first oscillator and said second oscillator with said train.

The invention relates to a watch movement comprising such a regulating mechanism.

The invention relates to a timepiece comprising such a movement.

The invention relates to the field of the regulation of mechanical timepieces, in particular mechanical watches.

Background of the invention

In a watch exhaust mechanism, the Swiss lever escapement generally used has a fairly low efficiency (of the order of 35%).

• les frottements des palettes de l'ancre sur les dents ;
• les chocs dus aux mouvements saccadés de la roue et de l'ancre ;
• la chute nécessaire pour s'accommoder des erreurs d'usinage.

The main sources of loss of a Swiss anchor escapement are:

• the friction of the pallets of the anchor on the teeth;
• shocks due to jerky movements of the wheel and the anchor;
• the fall required to accommodate machining errors.

• une augmentation de l'autonomie de la montre ;
• une amélioration des propriétés chronométriques de la montre ;
• une différentiation marketing et esthétique.

The development of a new synchronization system of a gear driven by a mainspring with a resonator in a watch movement, with a higher efficiency than that of a Swiss lever escapement, can result in:

• an increase in the autonomy of the watch;
• an improvement in the chronometric properties of the watch;
• a marketing and aesthetic differentiation.

We are looking for systems to synchronize a gear driven by a motor spring with a resonator, and which would have a performance greater than the performance of the Swiss lever escapement.

The document EP 2365403A2 in the name of SEAGULL WATCH Co Ltd discloses an oscillator system of a mechanical timepiece comprising: at least one balance which is free to rotate about an axis; and at least one spiral spring connecting at least one balance to a fixed point or to another balance, the spiral spring comprising: a first turn connected to at least one balance wheel, and a second turn connected to the fixed point or to the another beam, and a transition section connecting the first turn to the second turn, wherein a substantially linear return torque for at least one balance is essentially provided by the elastic deformation of the transition section and the turns, to produce a oscillatory movement for at least one balance.

The document EP2141555 on behalf of SWATCH GROUP RESEARCH & DEVELOPMENT Ltd describes a regulator mechanism that includes a low frequency resonator coupled to a high frequency resonator. Low and high frequency resonators have inertial masses associated with spiral springs. Another spiral spring is disposed between the inertial masses for coupling the low frequency resonator and the high frequency resonator. The masses of inertia are formed by balances The resonators are placed coaxially inside a timepiece.

The document EP 2431823 in the name of BLANCPAIN SA describes an improved Swiss anchor, comprising, on either side of a rod defining an axis of pivoting of the anchor, at one end, two pallets, of entry and exit, each mounted at an arm, respectively inlet and outlet, each pallet being terminated by a pulse surface arranged to receive a pulse communicated by a tooth of an escape wheel, and each pallet comprising, connected to the impulse surface, a resting surface arranged to receive resting a tooth of an escape wheel, at a second end, a fork connected to the input and output arms by a fork rod arranged to rotate between limit stops, respectively input and output on the side of the respective arms. This fork comprises, on either side of a fork entry clearance, two horns, inlet and outlet, arranged to limit the displacement of a plateau pin of a balance of a regulating member , and the fork further comprises a stinger, arranged to cooperate with a notch of a plate of such a balance. The resting surface of each pallet is a portion of a prism of elliptical section whose axis of symmetry coincides with the axis of pivoting of the anchor.

The document EP2908189 in the name of ETA SA Swiss Watch Manufacture describes a watchmaking mechanism comprising, mounted movable, at least pivotally relative to a plate, an escape wheel arranged to receive a motor torque via a gear, a first oscillator comprising a first rigid structure connected to the plate by first elastic return means, and a second oscillator comprising a second rigid structure connected to the first rigid structure by second elastic return means, and which comprises guide means arranged to cooperate with complementary guiding means that includes the escape wheel, synchronizing the first oscillator and the second oscillator with the wheel.

Summary of the invention

The invention proposes to create mechanisms that have a performance greater than the efficiency of the Swiss lever escapement.

The invention consists of a system for synchronizing a wheel, particularly driven by a motor spring, with a resonator.

For this purpose, the invention relates to a clock control mechanism according to claim 1.

The invention relates to a watch movement comprising such a regulating mechanism.

The invention relates to a timepiece comprising such a movement, characterized in that it is a watch.

Brief description of the drawings

• la figure 1 représente, de façon schématisée et en vue en plan, une première variante d'un mécanisme régulateur selon l'invention, comportant deux oscillateurs formés par des ensembles balancier-spiral dont l'un pivote sur l'autre et coopère avec une roue d'échappement, dans un état instantané au cours d'une oscillation de chacun de ces ensembles balanciers-spiral;
• la figure 2 représente, de façon schématisée et en vue en plan, une deuxième variante d'un mécanisme régulateur selon l'invention, comportant deux balanciers sectoriels reliés par des jeux de lame croisées, le premier à une platine, et le deuxième, qui coopère avec une roue d'échappement, relié au premier balancier, dans un état instantané au cours d'une oscillation de chacun de ces oscillateurs ;
• la figure 3 représente le mécanisme de la figure 1 dans un état au repos en l'absence de toute excitation, les ressorts spiraux n'étant pas représentés;
• la figure 4 représente le mécanisme de la figure 2 dans un état au repos en l'absence de toute excitation ;
• la figure 5 est un schéma-blocs figurant une pièce d'horlogerie comportant une montre équipée d'un mouvement avec un mécanisme régulateur selon l'invention.

Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which:

• the figure 1 represents schematically and in plan view, a first variant of a regulating mechanism according to the invention, comprising two oscillators formed by balance-springs assemblies, one of which pivots on the other and cooperates with an escape wheel, in an instantaneous state during an oscillation of each of these balance-balance assemblies;
• the figure 2 represents schematically and in plan view, a second variant of a regulating mechanism according to the invention, comprising two sectoral rockers connected by crossed blade games, the first to a plate, and the second, which cooperates with a escape wheel, connected to the first beam, in an instantaneous state during an oscillation of each of these oscillators;
• the figure 3 represents the mechanism of the figure 1 in a state of rest in the absence of any excitation, the spiral springs not being represented;
• the figure 4 represents the mechanism of the figure 2 in a state of rest in the absence of any excitement;
• the figure 5 is a block diagram showing a timepiece comprising a watch equipped with a movement with a regulating mechanism according to the invention.

Detailed Description of the Preferred Embodiments

The invention consists of a system for synchronizing a gear driven by a motor spring with a resonator.

The invention relates more particularly to the regulation of mechanical movements.

The principle of the invention is to equip a mechanical watch with a movement comprising at least two oscillators connected in series with each other, in particular stacked, synchronized with a gear by a mechanical cooperation between the last oscillator of the cascade and a component of the train, between guide means and complementary guide means, in particular a finger and a cam, or more particularly a finger and a grooved wheel. The invention is illustrated, without limitation, with only two oscillators mounted in cascade.

More particularly, the invention relates to a time control mechanism 100. This regulating mechanism 100 comprises a plate 1 and, mounted mobile, at least pivotally relative to this plate 1, an escape wheel 51 and a first oscillator 110.

The escapement wheel 51 pivots about an exhaust axis D and is arranged to receive, via a train, a driving torque. In a particular application, this driving torque is provided by an energy storage means, such as a cylinder, of a movement 200 to which the regulating mechanism 100 is intended to be incorporated.

The first oscillator 110 comprises a first rigid structure 310, which is connected to the plate 1 by first elastic return means 210.

According to the invention, the regulator mechanism 100 further comprises at least one second oscillator 120. This second oscillator 120 comprises a second rigid structure 320, which is connected to the first rigid structure 310 of the first oscillator 110 by second elastic return means 220 .

These second elastic return means 220 are arranged to allow at least a pivoting movement of the second rigid structure 320 relative to the first rigid structure 310.

And this second structure 320 comprises guide means 42, which are arranged to cooperate with complementary guiding means 52 that includes the escape wheel 51. These guide means 42 and these complementary guide means 52 together form a means of transmission of motion, for synchronizing the first oscillator 110 and the second oscillator 120 with the wheelwork to which the escape wheel 51 belongs.

This means of transmitting motion can take different forms: groove-pin system, as illustrated in a non-limiting manner by the figures, crank-handle system, or other.

The invention is described here with two oscillators connected in series. Naturally, it is also applicable to a cascade of oscillators connected in series with each other.

Preferably, the first oscillator 110 and the second oscillator 120 have equal eigenfrequencies.

Preferably, the first oscillator 110 and the second oscillator 120 have between them an angular phase shift substantially constant and close to 90 °.

These at least two resonators, formed by the first oscillator 110 and the second oscillator 120, preferably of the same natural frequency, each having a degree of angular freedom, are stacked so that a particular point of the second resonator travels a path patatoïde 53 closed around a fixed point, which is here the pivot 151 of the escape wheel 51, for the mechanisms illustrated in the figures. The more this trajectory 53 has a shape close to a circle, and the better is the synchronization. The trajectory 53 is more generally an ellipse whose eccentricity depends on the geometry of the mechanism, in particular at the level of the connection between the guide means 42 and the complementary guide means 52.

In an advantageous embodiment, the first oscillator 110 pivots around a first pivot axis O1, and oscillates in a plane parallel to the plate 1 on either side of a first plane axis A1, the second oscillator 120 pivots around a second pivot axis O2 and oscillates in a plane parallel to the plate 1 about a second plane axis A2, and, in projection on the plate 1, the first plane axis A1 and the second plane axis A2 make the with each other an angle between 60 ° and 120 °.

Preferably, this angle is between 80 ° and 100 °. In a particular embodiment, it is 90 °.

In the particular embodiments illustrated by the figures, the most downstream oscillator, here the second oscillator 120, has, at a particular point, an interaction means, such as a pin, constituting the guide means 42 for cooperating with each other. with the escape wheel 51. The oscillations of the two resonators, first oscillator 110 and second oscillator 120, are maintained by the escape wheel 51 which also has an interaction means, such as a cam or a groove, and in particular a radial groove constituting the complementary guide means 52. The escape wheel 51 is subjected to a motor torque. Its speed is synchronized by the frequency of the two resonators.

The movement of each oscillator of the regulator mechanism 100 is preferably plane. The mobility plans of the different oscillators constituting the regulator mechanism 100 can be confused, or parallel to each other.

Thus, preferably, the regulating mechanism 100 comprises first plane guide means, which are arranged to allow at least a pivoting movement of the first structure 310 with respect to a point of the plate 1, in a plane P parallel to that of the plate 1. Similarly, the regulating mechanism 100 comprises second planar guide means, which are arranged to allow at least a pivoting movement of the second structure 320 by relative to the first structure 310 in the plane P or in a plane parallel to said plane P.

In a particular embodiment, the second rigid structure 320 is pivotally mounted on the first rigid structure 310.

The figure 1 illustrates a first variant, in which two conventionally pivoted swivel balances, stacked one on the other, are synchronized with a gear through a groove-pin interaction. This produces a mechanical watch 300 provided with two stacked rockers, synchronized by a grooved wheel.

More precisely, the first oscillator 110 comprises a first balance spring-spiral assembly 11. This first balance-spring balance 11 comprises a first balance 31, constituting the first rigid structure 310, and a first balance spring 21, which constitutes the first elastic return means 210 , and whose outer turn is fixed to the plate 1 at a first pin 61, and which pivots about a first pivot axis O1.

The first rocker 31 comprises a first pivot 41, eccentric with respect to the first pivot axis O1. This first pivot 41 defines a second pivot axis O2 about which pivots a second balance-spiral assembly 12, which constitutes the second oscillator 120.

This second balance spring-spiral assembly 12 comprises a second balance 32, which constitutes the second rigid structure 320, and a second balance spring 22, which constitutes the second elastic return means 220, and whose outer turn is fixed to the first balance 31 at the a second stud 62. And this second rocker 32 constitutes the second structure 320 comprising the guide means 42.

The figure 2 illustrates a second variant, wherein two cross-beam rockers, cascading with each other, are synchronized with a gear through a groove-pin interaction.

A first beam, constituted here and without limitation of two circular sectors end to end, is the first rigid structure 310. A second beam, constituted here and in a non-limiting manner of a circular sector, constitutes the second rigid structure 320. More particularly, this first rocker 310 and this second rocker 320 are coplanar.

More specifically, in this second variant, the first elastic return means 210 comprise at least a first flexible blade 210A and a second flexible blade 210B, which are crossed with each other, and which together constitute the first plane guide means arranged to allow at least a pivoting movement of the first structure 310 relative to a portion 101 of the plate 1 in a plane P parallel to that of the plate 1. This part 101 of the plate 1 may be an insert, or a part of the plate 1. The first flexible blade 210A is fixed to the portion 101 of the plate 1 in one point 211, and the first beam 310 at a point 214, and the second flexible blade 210B is attached to the portion 101 of the plate 1 at a point 212, and the first beam 310 at a point 213.

In a preferred embodiment, the first flexible blade 210A and the second flexible blade 210B are spaced from each other and arranged in two distinct planes parallel to the plate 1.

The second elastic return means 220 similarly comprise at least a third flexible blade 220A and a fourth flexible blade 220B crossed with each other and together constitute the second plane guide means arranged to allow at least one movement. pivoting the second structure 320 relative to the first structure 310 in a plane P parallel to that of the plate 1, and to provide an elastic return function. The third flexible blade 220A is fixed to the first rocker 310 at a point 312, and the second rocker 320 at a point 313, and the fourth flexible blade 220B is fixed to the first rocker 310 at a point 311, and the second rocker 320 in one point 314.

In a preferred embodiment, the third flexible blade 220A and the fourth flexible blade 220B are spaced from each other and arranged in two distinct planes parallel to the plate 1.

These different crossed blades are advantageously made in two parallel planes.

In an advantageous embodiment, the portion 101 of the plate 1, the first flexible blade 210A and the second flexible blade 210B, the first rocker 310, the third flexible blade 220A and the fourth flexible blade 220B, the second rocker 320, form a set monoblock of micro-machinable material such as silicon or the like.

In a particular embodiment, the entire plate 1, the first flexible blade 210A and the second flexible blade 210B, the first beam 310, the third flexible blade 220A and the fourth flexible blade 220B, the second beam 320, form a one-piece assembly of micro-machinable material such as silicon or the like.

For one and the other of these first and second variants, which are not limiting of the invention, the guide means 42 and the complementary guide means 52 may take different forms.

In the variants illustrated in the figures, the cooperation between the guide means 42 and the complementary guide means 52 is mechanical.

In the forms illustrated in figures 1 and 2 , the guide means 42 comprise a finger, which is carried by the second rigid structure 320, and which is arranged to cooperate with two opposite surfaces of a cam constituting the complementary guide means 52, and that comprises the escape wheel 51. This cam is eccentric with respect to the exhaust axis D, and the trajectory 53 of the finger surrounds the exhaust axis D.

Preferably, this cam is a groove with parallel faces that includes the escape wheel 51.

In an advantageous embodiment of the second variant, the portion 101 of the plate 1, the first flexible blade 210A and the second flexible blade 210B, the first rocker 310, the third flexible blade 220A and the fourth flexible blade 220B, the second balance 320 , and the finger 42 (or the like), form a one-piece assembly of micro-machinable material such as silicon or the like.

In particular, the cam is a groove that is substantially radial, or strictly radial in the case of the figures, of the escape wheel 51.

Advantageously, the cam groove has a radial first inner portion with respect to the exhaust axis D, which is tangential to a second curve portion of constant concavity or decreasing away from the exhaust axis D so to compensate for isochronism defects.

In a particular embodiment, the finger is a pin which is arranged to cooperate at minimum clearance with the groove, the motion transmission means thus being a groove-pin system.

In a particular embodiment, the guide means 42 comprise a bearing finger of an inner race of a ball bearing. The outer race of this bearing is advantageously mounted in a frictionally rubbing slider in a radial groove of the escape wheel. This rubbing slider allows to favor a phase shift of 90 ° between the two resonators and thus to avoid that the trajectory collapse on a line.

In a particular embodiment, the first oscillator 110 pivots around a first pivot axis O1 and oscillates in a plane parallel to the plate 1 on either side of a first plane axis A1, the second oscillator 120 pivots around a second pivot axis O2 and oscillates in a plane parallel to the plate 1 about a second plane axis A2, and, in a rest position of the first oscillator 110 and the second oscillator 120 free of any excitation, the first axis Pivot O1, the second pivot axis O2, and the finger together define an angle e between 60 ° and 120 °. This angle e is preferably between 80 ° and 100 °.

In a particular embodiment of the invention, the cooperation between the guide means 42 and the complementary guide means 52 is magnetic and / or electrostatic.

Thus, more particularly, in another embodiment not illustrated by the figures, to eliminate friction, the guide means 42 comprise at least one magnet or a ferromagnetic track arranged to cooperate with at least one magnet or one magnet. ferromagnetic track that comprises the complementary guide means 52.

In another embodiment not illustrated by the figures, also for eliminating friction, the guide means 42 comprise at least one electrified or electrostatically conductive track, arranged to cooperate with at least one electrified or electrically conductive track that comprises the means of supplementary guidance 52.

The invention also relates to a watch movement 200 comprising such a regulating mechanism 100.

The invention also relates to a timepiece 300 comprising such a movement 200, and in particular this timepiece 300 is a watch.

• l'invention permet d'éviter les mouvements saccadés caractéristiques d'un échappement à ancre suisse et, par conséquent, les pertes dues aux chocs ;
• l'invention propose une innovation dans le domaine de l'échappement tout en respectant les codes horlogers classiques, par le maintien de balanciers-spiral ;
• pour la première variante, on peut bénéficier de tout le savoir-faire horloger pour utiliser des résonateurs isochrones.

The invention has many advantages:

• the invention avoids the jerky movements characteristic of a Swiss lever escapement and, consequently, the losses due to shocks;
• the invention proposes an innovation in the field of the exhaust while respecting the classic watchmaking codes, by the maintenance of balance springs;
• for the first variant, all the horological know-how can be used to use isochronous resonators.

Claims (27)

1. Timepiece regulating mechanism (100) comprising a plate (1) and, mounted to move at least in a pivoting motion with respect to said plate (1), an escape wheel (51), which pivots about an axis of escapement (D) and is arranged to receive a drive torque via a gear train, and a first oscillator (110) comprising a first rigid structure (310) connected to said plate (1) by first elastic return means (210), said regulating mechanism (100) further comprising at least a second oscillator (120) comprising a second rigid structure (320) which is connected to said first rigid structure (310) by second elastic return means (220) which are arranged to allow at least a pivoting motion of said second rigid structure (320) with respect to said first rigid structure (310), where said second structure (320) comprises guide means (42) arranged to cooperate with complementary guide means (52) comprised in said escape wheel (51), together forming a motion transmission means for synchronising said first oscillator (110) and said second oscillator (120) with said gear train, characterised in that said second rigid structure (320) is pivotably mounted on said first rigid structure (310).
2. Regulating mechanism (100) according to claim 1, characterised in that said first oscillator (110) and said second oscillator (120) have equal natural frequencies.
3. Regulating mechanism (100) according to claim 2, characterised in that said first oscillator (110) and said second oscillator (120) have between them a substantially constant phase shift close to 90°.
4. Regulating mechanism (100) according to claim 1, characterised in that first oscillator (110) and said second oscillator (120) are each formed by a sprung balance assembly, said second oscillator (120) pivoting on said first oscillator (110) and cooperating with said escape wheel (51), in an instantaneous state during an oscillation of each of said balance-spring assemblies, said escape wheel (51) being arranged for maintaining said first oscillator (110) in a first direction, and for maintaining said second oscillator (120) in a second direction substantially orthogonal to said first direction of said first oscillator (110).
5. Regulating mechanism (100) according to claim 1, characterised in that said first oscillator (110) pivots about a first pivot axis (O1) and oscillates in a plane parallel to said plate (1) on either side of a first plane axis(A1), in that said second oscillator (120) pivots about a second pivot axis (O2) and oscillates in a plane parallel to said plate (1) on either side of a second plane axis (A2), in that, in projection onto said plate (1), said first plane axis (A1) and said second plane axis (A2) form with each other an angle comprised between 60° and 120°.
6. Regulating mechanism (100) according to claim 5, characterised in that, in projection onto said plate (1), said first plane axis (A1) and said second plane axis (A2) form with each other an angle comprised between 80° and 100°.
7. Regulating mechanism (100) according to claim 1, characterised in that said regulating mechanism (100) comprises first planar guide means arranged to allow at least a pivoting motion of said first structure (310) with respect to a point on said plate (1) in a plane (P) parallel to that of said plate (1), in that said regulating mechanism (100) comprises second planar guide means arranged to allow at least a pivoting motion of said second structure (320) with respect to said first structure (310) in said plane (P) or in a plane parallel to said plane P.
8. Regulating mechanism (100) according to claim 4, characterised in that said first sprung balance assembly (11) comprises a first balance (31) and a first balance spring (21), whose outer coil is attached to said plate (1) at a first balance spring stud (61), and which pivots about a first pivot axis (O1), and also characterised in that said first balance (31) comprises a first pivot (41), off-centre with respect to said first pivot axis (O1), defining a second pivot axis (O2) about which pivots said second sprung balance assembly (12) which comprises a second balance (32) and a second balance spring (22), whose outer coil is attached to said first balance (31) at a second balance spring stud (62), and in that said second balance (32) forms said second structure (320) comprising said guide means (42).
9. Regulating mechanism (100) according to claim 7, characterised in that said first elastic return means (210) comprise at least a first flexible strip (210A) and a second flexible strip (210B) crossed with each other and together forming said first planar guide means arranged to allow at least a pivoting motion of said first structure (310) with respect to a point on said plate (1) in a plane parallel to that of said plate (1), and to ensure an elastic return function.
10. Regulating mechanism (100) according to claim 9, characterised in that said first flexible strip (210A) and said second flexible strip (210B) are remote from each other and arranged in two distinct planes parallel to said plate (1).
11. Regulating mechanism (100) according to claim 7, characterised in that said second elastic return means (220) comprise at least a third flexible strip (220A) and a fourth flexible strip (220B) crossed with each other and together forming said second planar guide means arranged to allow at least a pivoting motion of said second structure (320) with respect to said first structure (310) in said plane (P).
12. Regulating mechanism (100) according to claim 11, characterised in that said third flexible strip (220A) and said fourth flexible strip (220B) are remote from each other and arranged in two distinct planes parallel to said plate (1).
13. Regulating mechanism (100) according to claims 9 and 11, characterised in that said plate (1), said first flexible strip (210A) and said second flexible strip (210B), said first balance (310), said third flexible strip (220A) and said fourth flexible strip (220B), and said second balance (320), form a one-piece assembly made of micromachinable material or of silicon.
14. Regulating mechanism (100) according to claim 1, characterised in that the cooperation between said guide means (42) and said complementary guide means (52) is mechanical.
15. Regulating mechanism (100) according to claim 14, characterised in that said guide means (42) comprise a finger carried by said second rigid structure (320) and arranged to cooperate with two opposite surfaces of a cam forming said elementary guide means (52) comprised in said escape wheel (51), said cam being off-centre with respect to said axis of escapement (D), and the trajectory (53) of said finger encircling said axis of escapement (D).
16. Regulating mechanism (100) according to claim 15, characterised in that said cam is a groove having parallel sides comprised in said escape wheel (51).
17. Regulating mechanism (100) according to claim 16, characterised in that said groove is substantially radial with respect to said axis of escapement (D).
18. Regulating mechanism (100) according to claim 16, characterised in that said groove comprises a first inner radial portion with respect to said axis of escapement (D), which is tangent to a second curved portion whose concavity is constant or decreases moving away from said axis of escapement (D) so as to compensate for isochronism defects.
19. Regulating mechanism (100) according to claim 16, characterised in that said finger is a pin which is arranged to cooperate with minimum play with said groove, said motion transmission means thus being a pin-groove system.
20. Regulating mechanism (100) according to claim 14, characterised in that said guide means (42) comprise a finger carrying an inner cage of a ball bearing whose outer cage is mounted in a slide-contact rubbing with friction inside a radial groove of said escape wheel (51), which forms said complementary guide means (52), so as to remove any rotational friction of said inner cage and ensure friction during radial movement of said outer cage.
21. Regulating mechanism (100) according to claim 15, characterised in that said first oscillator (110) pivots about a first pivot axis (O1) and oscillates in a plane parallel to said plate (1) on either side of a first plane axis (A1), in that said second oscillator (120) pivots about a second pivot axis (O2) and oscillates in a plane parallel to said plate (1) about a second plane axis (A2), and in that, in a rest position of said first oscillator (110) and of said second oscillator (120) free of any excitation, said first pivot axis (O1), said second pivot axis (O2), and said finger together define an angle (θ) comprised between 60° and 120°.
22. Regulating mechanism (100) according to claim 21, characterised in that said angle (θ) is comprised between 80° and 100°.
23. Regulating mechanism (100) according to claim 1, characterised in that the cooperation between said guide means (42) and said complementary guide means (52) is magnetic and/or electrostatic.
24. Regulating mechanism (100) according to claim 23, characterised in that said guide means (42) comprise at least one magnet or one ferromagnetic path, arranged to cooperate with at least one magnet or one ferromagnetic path comprised in said complementary guide means (52).
25. Regulating mechanism (100) according to claim 23, characterised in that said guide means (42) include at least one electrically charged or electrostatically conductive path, arranged to cooperate with at least one electrically charged or electrostatically conductive path comprised in said complementary guide means (52).
26. Timepiece movement (200) including a said regulating mechanism (100) according to claim 1.
27. Timepiece (300) including a said movement (200) according to claim 26, characterised in that the timepiece is a watch.

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