EP3128380B1 - Watch regulator mechanism with magnetically synchronised rotary arms - Google Patents

Description

The invention relates to a timepiece control mechanism comprising a plate and, movably mounted at least in pivoting movement relative to said plate, an escapement that pivots about an exhaust axis and is subjected to a torque motor, and at least a first resonator comprising a first rigid structure connected to said plate by first resilient return means, said first rigid structure carrying at least one inertial arm including a first inertial arm arranged to cooperate with said exhaust mobile by intermediate magnetized tracks and / or electrified that comprise both said at least a first inertial arm and said exhaust mobile, to form a synchronization device between said exhaust mobile and said at least a first resonator.

The invention also relates to a watch movement comprising at least one such regulating mechanism.

The invention also relates to a timepiece comprising such a movement or such a regulating mechanism.

The invention relates to the field of watchmaking mechanisms, in particular watchmaking exhaust mechanisms, and more particularly to the field of non-contact exhausts.

Background of the invention

The movement of the mechanical watch that we know today is the result of successive improvements for three centuries. Its Swiss lever escapement is characterized by its robustness to shocks. That is to say that the state of the watch is not affected by a punctual shock.

By cons, the performance of this exhaust is not very good (about 30%). On the other hand, the Swiss lever escapement does not allow the use of resonators whose frequency is high or low amplitude.

We therefore seek a way to be able to use resonators having a high quality factor, a high frequency, and / or low amplitudes, while increasing the efficiency of the exhaust and without giving up its robustness to shocks.

• la pendulette à diapason de Clifford ;
• le mouvement « Resonique® » de « De Bethune® »
• la montre « Accutron® » de « Bulova®.

Among the achievements related to the field of the invention, we know:

• Clifford's tuning clock;
• the "Resonique®" movement of "De Bethune®"
• the "Accutron®" watch from "Bulova®.

Each of these embodiments has particular advantages, but these movements have the same disadvantage: they are not resistant to shocks. That is to say that in case of shock, the needles advance quickly.

The document EP 2889704A2 in the name of Nivarox-FAR SA describes a clockwork escapement mechanism, comprising an escapement wheel subjected to a pivoting torque, of moment less than or equal to a nominal moment, around a first pivot axis, and a resonator integral with a regulating mobile mounted pivoting about a second axis of real or virtual pivoting, said escapement wheel comprising a plurality of actuators regularly spaced on its periphery, and each arranged to cooperate directly with at least a first the track of said mobile controller, characterized in that each said actuator comprises first barrier or electrostatic stop means and arranged to cooperate with said first track which is magnetized, respectively electrified, or ferromagnetic, or respectively electrostatic conductor, to exert on said first track a moment torque greater than said nominal moment, and still more characterized in that each said actuator further comprises second stop means arranged to constitute a stroke limiting stop, arranged to form an autonomous exhaust mechanism with at least a first abutment complementary surface that includes said movable regulator.

The document WO2015 / 096979A2 on behalf of The Swatch Group Research & Development Ltd, a clockwork escapement mechanism has a retainer between a resonator on the one hand, and two exhaust moters each subjected to a torque, on the other hand, characterized in that each said mobile escapement comprises at least one magnetized or ferromagnetic track, respectively electrified or electrostatically conductive, with a running period in which its magnetic characteristics, respectively electrostatic, are repeated, said stop having at least one magnetized or ferromagnetic polar mass, respectively electrified or electrostatically conductive, said polar mass being movable in a direction transverse to the direction of travel of at least one element of a surface of said track, and minus said polar mass or said track creating a magnetic or electrostatic field in an air gap between said at least one polar mass and said at least one surface, and further characterized in that said polar mass is opposed to a magnetic or electrostatic field barrier on said track just before each transverse movement of said stop controlled by the periodic action of said resonator, and characterized in that said first exhaust movable subjected to a first pair and said second exhaust movable subjected to a second pair are each arranged fit to cooperate alternately with said stopper, and in that said first mobile exhaust and said second mobile exhaust pivot about distinct axes and are connected to each other by a direct kinematic link.

The document US 3183426A in the name of HAYDON ARTHUR describes an all-magnetic escapement comprising a magnetic escape wheel, in which the energy varies continuously and progressively between a minimum and a maximum when the wheel rotates over a half-period then the energy returns to its value minimum on the next half-period. In other words, the magnetic force on the wheel varies gradually between a minimum (negative) and a maximum (positive) over an angular period.

The document EP 2990885A1 in the name of ETA SA describes a mechanical watch movement with a resonator, an exhaust associated with this resonator, and a display of at least one time information that is driven by a mechanical engine device via a counter wheel whose running is clocked by the 'exhaust. At least the resonator is housed in a chamber in which there is a reduced pressure relative to the atmospheric pressure. The escapement is a magnetic escapement comprising an escape wheel coupled directly or indirectly to the resonator via a non-contact magnetic coupling system, this magnetic coupling system being formed in such a way that a non-magnetic wall of the enclosure passes through the magnetic exhaust, so that a first part of this exhaust is located inside the enclosure while a second part of this exhaust is located outside of this enclosure.

The document EP2221676A1 in the name of MONTRES BREGUET SA describes a timepiece including a chronograph whose hands are driven by a first gear train causing in turn a first resonator, and a watch the needles are driven by a second wheel independent of the first, the second wheel in turn driving a second resonator, wherein the first and second wheels are driven from a single source of energy.

Summary of the invention

The invention proposes to remedy this deficiency of the state of the art, by developing a watch, including a mechanical watch, provided with a rotary arm regulator, synchronized magnetically, and equipped with an anti-stall mechanical.

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

The invention also relates to a watch movement comprising at least one such regulating mechanism.

The invention also relates to a timepiece comprising such a movement.

Brief description of the drawings

• la figure 1 représente, de façon schématisée et en vue en plan, un mécanisme régulateur selon l'invention avec un résonateur unique comportant un bras suspendu sur deux lames flexibles définissant un pivot virtuel, autour duquel pivote ce bras, lequel comporte à son extrémité distale des masses polaires magnétiques, qui coopèrent de façon périodique avec d'autres masses polaires magnétiques que comporte sur sa circonférence une roue d'échappement, ce mécanisme régulateur est muni d'un mécanisme anti-décrochage selon l'invention, comportant des composants à la fois sur l'extrémité distale du bras, et sur la roue d'échappement ;
• la figure 2 est un ensemble similaire à la figure 1, mais où le bras n'est fixé à la platine du mouvement que par une seule lame flexible ;
• la figure 3 est une vue en plan d'un résonateur selon l'invention comportant deux résonateurs sur lames flexibles fonctionnant en opposition de phase ;
• la figure 4 est une vue partielle, en plan, d'une variante où le mécanisme régulateur constitue un mécanisme d'échappement à chevilles de type Lepaute ;
• les figures 5 et 6 sont des vues en perspective, sous des angles différents, du mécanisme régulateur de la figure 3 ;
• les figures 7 à 9 sont des schémas simplifiés de liaisons mécaniques obligeant les bras rotatifs de tels résonateurs à rester en opposition ;
• la figure 10 est un schéma-blocs représentant une montre comportant un mouvement avec un régulateur selon l'invention comportant deux résonateurs.

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 is schematically and in plan view, a regulating mechanism according to the invention with a single resonator comprising an arm suspended on two flexible blades defining a virtual pivot, about which pivots this arm, which has at its distal end polar masses magnetic, which cooperate periodically with other magnetic polar masses that comprises on its circumference an escape wheel, this regulating mechanism is provided with an anti-stall mechanism according to the invention, comprising components both on the distal end of the arm, and on the escape wheel;
• the figure 2 is a set similar to the figure 1 but where the arm is fixed to the plate of motion only by a single flexible blade;
• the figure 3 is a plan view of a resonator according to the invention comprising two resonators on flexible blades operating in phase opposition;
• the figure 4 is a partial view, in plan, of a variant where the regulating mechanism constitutes a Lepaute-type escapement mechanism;
• the Figures 5 and 6 are perspective views, from different angles, of the regulatory mechanism of the figure 3 ;
• the Figures 7 to 9 are simplified schematics of mechanical bonds forcing the rotating arms of such resonators to remain in opposition;
• the figure 10 is a block diagram showing a watch comprising a movement with a regulator according to the invention comprising two resonators.

Detailed Description of the Preferred Embodiments

The invention proposes to develop a mechanical regulator, comprising resonators having a high quality factor, a high frequency, and / or low amplitudes, while increasing the efficiency of the exhaust and without giving up its robustness to shocks.

• demande européenne EP14182532.3
• demande européenne EP13199428.7
• demande européenne EP14176816.8
• demande européenne EP14199040.8
• demande européenne EP14199039.0
• demande européenne PCT/EP2014/079036
• demande européenne EP14186261.5
• demande européenne EP14184155.1
• demande européenne EP13199427.9 .

This regulator is based on at least one magnetically or electrostatically synchronized oscillator. The invention is more specifically described in the magnetic case. Those skilled in the art will be able to refer to the other applications of the same applicant, which describe in more detail the elements of the synchronization magnetic interaction, and which also deal with the electrostatic variant:

• European demand EP14182532.3
• European demand EP13199428.7
• European demand EP14176816.8
• European demand EP14199040.8
• European demand EP14199039.0
• European demand PCT / EP2014 / 079036
• European demand EP14186261.5
• European demand EP14184155.1
• European demand EP13199427.9 .

Thus, the invention relates to a watchmaking mechanism 200 comprising a plate 1 and mounted movable at least in pivoting movement relative to the plate 1, an exhaust mobile 10 and at least a first resonator 100.

The escapement wheel 10 is here illustrated, without limitation, by an escape wheel. It pivots around an exhaust axis D0, and is subjected to a driving torque, from an accumulator such as a cylinder or the like.

At least one first resonator 100 comprises a first rigid structure 110, which is connected to the plate 1 by first elastic return means 120. This first rigid structure 110 carries at least one inertial arm 130 or 140. It also carries, at the end of arm 111, masses of inertia 112 carrying inertia adjusting and balancing screws 113.

The figure 1 shows a first inertial arm 130, which is arranged to cooperate with the escapement mobile 10 via magnetized tracks and / or electrified that comprise both the at least one first inertial arm 130 and the mobile escape 10 , to form a synchronization device between the escapement wheel 10 and the at least one first resonator 100. This arm 130 comprises a polar mass carrying distal end carried by a rod 115.

According to the invention, the synchronization device is protected from stalling during an accidental increase in torque by a mechanical anti-stall mechanism comprising mechanical exhaust stops 12 carried by the escape wheel 10, and by at least one mechanical stop of inertial arm 132, carried by the at least one first inertial arm 130, and arranged together for a stop abutment hold in such case of accidental increase in torque.

More particularly, according to the invention, the at least one first inertial arm 130 pivots around a first virtual axis D1. And such so-called mechanical stops of inertial arm 132, which includes the inertial arm 130, each extend in a direction substantially tangent to the swing oscillation race of the inertial arm 130 around the first virtual axis D1.

More particularly, in the variant of the figure 1 , the first virtual axis D1 is located at the intersection, in projection on the plane of the plate 1, of flexible blades 121 and 122 that comprise the first elastic return means 120.

In the variant of the figure 2 the first virtual axis D1 is situated at the rest position of a single flexible blade 125 which constitutes the first elastic return means 120.

In a particular nonlimiting variant, illustrated by the figures, the magnetized and / or electrised track that comprises the at least one first inertial arm 130 comprises at least a first polar mass of inertial arm 131A and a second polar mass of inertial arm 131B , alternating, which extend on either side of a radial R from the first virtual axis D1, and on either side of a common perpendicular T to the radial R.

More particularly, in the variants illustrated in figures 1 and 2 at least one magnetized and / or electrified track, which comprises the escape wheel 10, comprises an alternation of exhaust polar masses 11 and exhaust mechanical stops 12, at the same angular pitch α with respect to the exhaust axis D0.

In particular, in these variants, the total space, along the radial R, of a group formed by a first polar mass of inertial arm 131A and a second polar mass of inertial arm 131B consecutive, along the radial R, is substantially equal to a linear pitch P which is the projection on the radial R of the angular pitch a. And the separation, along the radial R, mechanical stops of inertial arm 132 corresponding to the same group, is substantially equal to half of this linear pitch P.

In an advantageous variant illustrated by the figures 3 , 5 and 6 , the first rigid structure 110 still carries at least a second inertial arm 140 that includes a second resonator 150. This second inertial arm 140 pivots around a second virtual axis D2, and is arranged as the first inertial arm 130, to cooperate with the escapement mobile 10 via magnetized tracks and / or electrified that comprise both the second inertial arm 140 and the exhaust mobile 10. The assembly consisting of the first resonator 100 and the second resonator 150 form then a tuning fork.

More particularly, the mechanical anti-stall mechanism comprises at least a second mechanical stop of inertial arm 142 carried by the second inertial arm 140. Nevertheless, the mechanism can operate with the only first stop of the first arm 130.

As illustrated by the figures, more particularly, the first inertial arm 130 and the second inertial arm 140 each comprise a fastener 133, respectively 143, of at least one flexible blade 135, respectively 145, the flexible blades 135, 145 respectively. , being fixed at their other end to the first rigid structure 110 constituted by the same connecting piece 20, comprising a bending zone 21, here collar type, just at the rigid attachment to the plate, and attached to the plate 1 at a recess 2.

The first inertial arm 130 and the second inertial arm 140 are arranged to vibrate in phase opposition with each other. It is in this configuration that the quality factor is the best.

In the variant of figures 3 , 5 and 6 , the first inertial arm 130 and the second inertial arm 140 are arranged on either side of the escapement wheel 10, and each comprise at least one pair consisting of a polar mass of inertial arm 131, 141, and of a mechanical stop of inertial arm 132, 142, arranged to cooperate alternately with the runway of the escape wheel 10.

More particularly, at least one magnetized and / or electrified track included in the escapement wheel 10 comprises an alternation of exhaust polar masses 11 and exhaust mechanical stops 12 at the same angular pitch α, and in each pair , the angular distance, in projection on the same plane perpendicular to the exhaust axis D0, between the polar mass of inertial arm 131, 141, and the mechanical stop of inertial arm 132, 142, is equal to half of this angular step α.

More particularly, as illustrated, the first inertial arm 130 and the second inertial arm 140, and the flexible blades 135, 145, extend in directions substantially parallel to each other and orthogonal to that of the connecting piece 20.

Advantageously and particularly, each inertial arm 130, 140, is arranged to cooperate with the mobile exhaust 10 continuously, without periodic stop of the mobile escape 10.

In a particular variant, as visible in figure 4 , the regulating mechanism 200 constitutes a Lepaute-type escapement mechanism, in which the escapement device 10 comprises a half-pin forming a mechanical exhaust stop 12 close to each polar exhaust mass 11 that the mobile exhaust system 10, and wherein the at least one first inertial arm 130 comprises a mechanical stop of inertial arm 132A, which is the inner surface of a first compass leg, and another mechanical stop of inertial arm 132B corresponding to the not next which is the outer surface of a second branch of compass. The inner surface of the first compass leg and the outer surface of the second compass leg are separated by a space of greater width than the radius of the half-pin.

In a variant, the mechanical stop system is coplanar and comprises at least one finger arranged to cooperate radially with a toothed wheel.

In a particular embodiment of low amplitude, the angular amplitude of each inertial arm 130, 140 is less than 20 °.

More particularly, at least one of the inertial arms 130, 140 of the tuning fork carries two magnetic pallets.

More particularly, the two inertial arms 130, 140 of the tuning fork each carry at least one magnetic paddle.

More particularly, at least one of the inertial arms 130, 140 of the tuning fork carries two anti-stall mechanical pallets.

More particularly, the two inertial arms 130, 140 of the tuning fork each carry at least one mechanical anti-stall pallet.

As visible on the Figures 7 to 9 representing non-limiting variants, more particularly, the regulating mechanism 200 comprises at least two inertial arms 130, 140, rotating whose phase shift of one with respect to the other is controlled by a mechanical connection.

The figure 7 illustrates the mechanical phase-shift control connection comprising a groove-pin mechanism, with a pin 31 integral with a 130 of the two inertial arms 130, 140, sliding in a groove 32 of a fitting 33 secured to the other 140 of the two inertial arms 130, 140.

The figure 7 illustrates the variant comprising at least one gear sector 34, 35, arranged to synchronize symmetrical movements of the inertial arms 130, 140, with a first toothed sector 34 integral with a 130 of the two inertial arms 130, 140, meshing permanently with a second sector gear 35 secured to the other 140 of the two inertial arms 130, 140.

The figure 9 illustrates a flexible mechanical connection comprising flexible blades 36, 37, joining in cross the opposite ends of the two inertial arms 130 and 140.

More particularly, the connecting piece 20 of the two arms of the tuning fork is connected to the plate 1 by a viscoelastic component or polyurethane, arranged to dissipate the reaction forces to the support due to a possible transient mode of "windshield wiper" type. tuning fork when the inertial arms 130, 140 have a substantially synchronous movement.

In another variant, the connecting piece 20 of the two arms of the tuning fork is connected to the plate 1 by a friction mechanism, coupled to an elastic return means in the neutral position, and arranged to dissipate reaction forces at the support due to a possible transient mode of "wiper" type of tuning fork when the inertial arms 130, 140, have a substantially synchronous movement.

Advantageously, at least one component of mechanical anti-stall mechanism is made of a shock-absorbing material, so as to avoid bouncing.

As visible on the figure 3 in a particular variant, at least one component of said mechanical anti-stall mechanism is a thin pallet, integral with an inertial arm 130, 140, and in an arc substantially concentric with the pivot axis, real or virtual , of the inertial arm 130, 140, which carries it.

In a particular variant, the mechanical anti-stall mechanism comprises at least one set formed by a pallet of an inertial arm 130, 140, arranged to cooperate in the abutment position with an anchor of the escapement mobile 10. And the pallets and pins of the anti-stall are arranged to intercept in case of forced pivoting of the mobile escape 10 while the at least one first resonator 100 is maintained in its equilibrium position.

In a particular and advantageous manner, the first elastic return means 120 comprise at least one flexible strip of oxidized silicon to thermally compensate for frequency variations.

In a particular variant, the easiest to implement, the synchronization is magnetic.

In a particularly advantageous application, the regulator mechanism 200 constitutes a regulation and exhaust mechanism.

The invention also relates to a clockwork movement 300 comprising at least one such regulating mechanism 200.

The invention also concerns a timepiece 400 comprising such a movement 300, or comprising at least one such regulating mechanism 200.

The advantage of the invention is to reconcile the high efficiency offered by a magnetic synchronization system (more than 90%), while eliminating its main defect, namely, the stall in case of high torque. Reliability is therefore improved without impairing performance performance.

The solution provided by this protection in case of torque overload is inexpensive, and easy to combine with a magnetic exhaust mechanism or the like.

Claims (32)

1. Timepiece regulating mechanism (200) comprising a plate (1) and, mounted to move at least in a pivoting motion with respect to said plate (1), an escape wheel set (10) that pivots about an axis of escapement (D0) and is subjected to a drive torque, and at least a first resonator (100) comprising a first rigid structure (110) connected to said plate (1) by first elastic return means (120), said first rigid structure (110) carrying at least one inertia arm (130; 140) including a first inertia arm (130) arranged to cooperate with said escape wheel (10) set via magnetically and/or electrically charged tracks comprised in both said at least one first inertia arm (130) and said escape wheel set (10), to form a synchronizing device between said escape wheel set (10) and said at least one first resonator (100), said synchronizing device being protected from loss of synchronization in the event of an accidental increase in torque by a mechanical anti-desynchronization mechanism comprising mechanical escapement stops (12) carried by said escape wheel set (10), and at least one mechanical inertia arm stop (132), carried by said at least one first inertia arm (130), and together arranged to maintain stopped in abutment in the event of an accidental torque increase, said at least one first inertia arm (130) pivoting about a virtual pivot axis (D1), and said mechanical inertia arm stops (132) comprised in said inertia arm (130) each extending, in a direction substantially tangent to the pivoting oscillating travel of said inertia arm (130) about said first virtual axis (D1), characterized in that said first virtual axis (D1) is located at the intersection in projection onto the plane of said plate (1) of flexible strips (121; 122) comprised in said first elastic return means (120).
2. Regulating mechanism (200) according to claim 1, characterized in that said magnetically and/or electrically charged track comprised in said at least one first inertia arm (130) comprises at least a first inertia arm pole piece (131A) and a second inertia arm pole piece (131B), which extend on either side of a radial line (R) originating from said first virtual axis (D1) and on either side of a common perpendicular (T) to said radial line (R).
3. Regulating mechanism (200) according to claim 2, characterized in that at least one said magnetically and/or electrically charged track comprised in said escape wheel set (10) comprises alternate escapement pole pieces (11) and mechanical escapement stops (12) at the same pitch angle (α) with respect to said axis of escapement (D0).
4. Regulating mechanism (200) according to claims 2 and 3, characterized in that the total dimensions, on said radial line (R), of a group formed by a consecutive said first inertia arm pole piece (131A) and said second inertia arm pole piece (131B), on said radial line (R), is substantially equal to a linear pitch (P) which is the projection onto said radial line (R) of said pitch angle (α), and in that the distance, on said radial line (R), between said mechanical inertia arm stops (132) corresponding to said group, is substantially equal to half said linear pitch (P).
5. Regulating mechanism (200) according to claim 1, characterized in that said first rigid structure (110) also carries at least one second inertia arm (140) comprised in a second resonator (150), said second inertia arm (140) pivoting about a second virtual axis (D2) and, like said first inertia arm (130), arranged to cooperate with said escape wheel set (10) via magnetically and/or electrically charged tracks comprised in both said at least one second inertia arm (140) and said escape wheel set (10), to form a synchronizing device between said first resonator (100) and said second resonator (150) forming a tuning fork.
6. Regulating mechanism (200) according to claim 5, characterized in that said mechanical anti-desynchronization mechanism comprises at least one second mechanical inertia arm stop (142) carried by said second inertia arm (140).
7. Regulating mechanism (200) according to claim 5 or 6, characterized in that said first inertia arm (130) and said second inertia arm (140) each include a fastening (133; 143) for at least one flexible strip (135; 145), said flexible strips (135; 145) being attached at the other end thereof to said first rigid structure (110) formed by the same connecting piece (20), comprising a bending area (21) and secured to said plate (1) in an end restraint (2).
8. Regulating mechanism (200) according to claim 5 or 7, characterized in that said first inertia arm (130) and said second inertia arm (140) are arranged to vibrate in phase opposition to each other.
9. Regulating mechanism (200) according to claims 5 to 8, characterized in that said first inertia arm (130) and said second inertia arm (140) are arranged on either side of said escape wheel set (10), and each include at least one pair formed of an inertia arm pole piece (131; 141), and a said mechanical inertia arm stop (132; 142), arranged to cooperate alternately with said track of said escape wheel set (10).
10. Regulating mechanism (200) according to claim 9, characterized in that at least one said magnetically and/or electrically charged track comprised in said escape wheel set (10) comprises alternate escapement pole pieces (11) and mechanical escapement stops (12) at the same pitch angle (α), and, in that, in each pair, the angular distance, in projection onto the same plane perpendicular to said axis of escapement (D0), between said inertia arm pole piece (131; 141) and said mechanical inertia arm stop (132; 142), is equal to half of said pitch angle (α).
11. Regulating mechanism (200) according to claim 7, characterized in that said first inertia arm (130) and said second inertia arm (140) and said flexible strips (135; 145), extend in directions substantially parallel to each other, and orthogonal to that of said connecting piece (20).
12. Regulating mechanism (200) according to claims 1 to 11, characterized in that each said inertia arm (130; 140) is arranged to cooperate continuously with said escape wheel set (10), with no periodic stopping of said escape wheel set (10).
13. Regulating mechanism (200) according to claims 1 to 12, characterized in that said regulating mechanism (200) forms a pin-wheel escapement mechanism of the Lepaute type, wherein said escape wheel set (10) comprises a half-pin forming a said mechanical escapement stop (12) in proximity to each escapement pole piece (11) comprised in said escape wheel set (10), and wherein said at least one first inertia arm (130) comprises a said mechanical inertia arm stop (132A), which is the inner surface of a first arm of a compass, and another mechanical inertia arm stop (132B) corresponding to the next step which is the outer surface of a second arm of a compass, said inner surface of said first compass arm and said outer surface of said second compass arm being separated by a space of greater width than the radius of said half-pin.
14. Regulating mechanism (200) according to claims 1 to 12, characterized in that said mechanical stop system is coplanar and comprises at least one finger arranged to cooperate radially with a toothed wheel.
15. Regulating mechanism (200) according to claims 1 to 13, characterized in that the angular amplitude of each said inertia arm (130; 140) is less than 20°.
16. Regulating mechanism (200) according to claim 7, characterized in that at least one of said inertia arms (130; 140) of said tuning fork carries two magnetic pallet stones.
17. Regulating mechanism (200) according to claim 7, characterized in that said two inertia arms (130; 140) of said tuning fork each carry at least one magnetic pallet stone.
18. Regulating mechanism (200) according to claim 7, characterized in that at least one of said inertia arms (130; 140) of said tuning fork carries two mechanical anti-desynchronization pallet stones.
19. Regulating mechanism (200) according to claim 7, characterized in that said two inertia arms (130; 140) of said tuning fork each carry at least one mechanical anti-desynchronization pallet stone.
20. Regulating mechanism (200) according to claim 5, characterized in that said regulating mechanism (200) comprises at least two said rotating inertia arms (130; 140) whose phase difference with respect to each other is controlled by a mechanical link.
21. Regulating mechanism (200) according to claim 20, characterized in that said mechanical phase difference control link comprises a pin/slot mechanism, with a pin (31) integral with one of the two said inertia arms (130; 140) sliding in a slot (32) in a bracket-shaped element (33) integral with the other of the two said inertia arms (130 140).
22. Regulating mechanism (200) according to claim 20, characterized in that said mechanical phase difference control link comprises at least one gear sector (34; 35), arranged to synchronize the symmetrical motions of said inertia arms (130; 140), with a first toothed sector (34) integral with one (130) of the two said inertia arms (130; 140), permanently meshing with a second toothed sector (35) integral with the other (140) of said two inertia arms (130, 140).
23. Regulating mechanism (200) according to claim 20, characterized in that said mechanical phase difference control link is a flexible mechanical link comprising flexible strips (36: 37) cross joining the opposite ends of the two said inertia arms (130; 140).
24. Regulating mechanism (200) according to claim 7, characterized in that said connecting piece (20) of the two tuning fork arms is connected to said plate (1) by a viscoelastic or polyurethane component, arranged to dissipate reaction forces on the support due to any temporary "windscreen wiper" mode of said tuning fork when said inertia arms (130; 140) have a substantially synchronous motion.
25. Regulating mechanism (200) according to claim 7, characterized in that said connecting piece (20) of the two tuning fork arms is connected to said plate (1) by a friction mechanism, coupled to a means of elastic return to a neutral position, and arranged to dissipate reaction forces on the support due to any temporary "windscreen wiper" mode of said tuning fork when said inertia arms (130; 140) have a substantially synchronous motion.
26. Regulating mechanism (200) according to claims 1 to 25, characterized in that at least one component of said mechanical anti-desynchronization mechanism is made of a shock absorbent material to prevent rebounds.
27. Regulating mechanism (200) according to claims 1 to 26, characterized in that said mechanical anti-desynchronization mechanism comprises a set formed by a pallet stone of a said inertia arm (130; 140), arranged to cooperate in a stop position with a pin of said escape wheel set (10), and in that said pallet stones and pins of said anti-desynchronization mechanism are arranged to intercept each other if said escape wheel set (10) is forced to pivot while said at least one first resonator (100) is maintained in a position of equilibrium.
28. Regulating mechanism (200) according to claims 1 to 27, characterized in that said first elastic return means (120) comprise at least one flexible oxidised silicon strip for thermal compensation of frequency variations.
29. Regulating mechanism (200) according to claims 1 to 28, characterized in that said synchronization is magnetic.
30. Regulating mechanism (200) according to claims 1 to 29, characterized in that the mechanism forms a regulating and escapement mechanism.
31. Timepiece movement (300) including at least one regulating mechanism (200) according to claims 1 to 30.
32. Timepiece (400) including at least one regulating mechanism (200) according to claims 1 to 30 and/or comprising a movement (300) comprising a movement (300) according to claim 31.

Images