EP3182224A1 - Safety regulator for timepiece escapement - Google Patents

Abstract

Mechanism for regulating (100) the energy for performing the function of a watch mechanism (200) comprising a functional mobile (300) controlling eddy current energy dissipation in case of runaway of said mobile (300), comprising a magnetically permeable or magnetized rotor (10) kinematically bonded to said movable (300), and a magnetized or magnetically permeable stator (20) facing said rotor (10) in an annular zone in which said rotor (10) develops eddy currents, and wherein said rotor (10) and said stator (20) are external to each other, said rotor (10) or / and said stator (20) having an alternation of raised areas where it can come in superposition with the other in an interaction generating eddy currents, and recessed areas in which it can not be superimposed with the other. Exhaust mechanism (200) comprising such a control mechanism (100), limiting the effect of accelerations on an escape wheel (300).

Description

Field of the invention

The invention relates to a regulation mechanism for the dissipation of superfluous energy when performing the function of a clock mechanism comprising a functional mobile.

The invention also relates to an escape mechanism comprising such a regulation mechanism.

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

The invention also relates to a watch comprising such a movement, and / or at least one such regulation mechanism.

The invention relates to the field of watch mechanisms intended to be integrated in a watch or in a mobile device.

Background of the invention

Improving the efficiency of an exhaust mechanism is a constant concern of the watch industry. For this purpose, we generally seek to minimize the dissipation of all orders, in an exhaust, because they are difficult to control, and alter the efficiency of the oscillator. In particular the accelerated dissipations, in particular due to the intrinsic operation of the mechanism, or else by accelerations of external origin, in particular by shocks, and the frictional dissipations are harmful disturbances that are difficult to control.

Currently no controlled dissipation system is used on the exhaust mechanisms.

Summary of the invention

The dissipations in an exhaust are generally minimized, because they define the efficiency of the oscillator. Nevertheless, by controlling the instants of appearance and disappearance of friction linked to a particular function, it is possible to keep the efficiency of the mechanism concerned, while exploiting the dissipation for functional applications, or acoustic, or aesthetic.

In an exhaust mechanism where the escape wheel is conventionally driven by a cylinder, the torque imparted by the cylinder varies over its discharge, the energy transmitted to the exhaust is lower after a few hours of operation that just after reassembly. In the same way, there is a variation of torque, and therefore of energy, depending on the workings, mainly because of the differences in profiles, and the tribological phenomena. For an escapement to be at constant force, it is advantageous to be able to make the energy superfluous from a certain torque, by the dimensioning of a suitable mechanism; this is the mode of operation of a magnetic escapement. This energy rendered superfluous by the operation of the exhaust must nevertheless be dissipated in one way or another. More generally, in any conventional escapement the kinetic energy of the anchor after the pulse, before coming into abutment against the star, is superfluous energy.

The present invention firstly focuses on acting on the accelerations due to the very operation of the mechanism, by an arrangement which furthermore has the advantage of limiting the undesirable effect of the accelerations imposed by an external factor.

• un aspect plus continu du fonctionnement,
• une répercussion moindre du choc de chute dans le reste des rouages,
• un choc de chute moins audible par le porteur,
• un choc de chute plus espacé des chocs des autres fonctions lors de la mesure (facilité de mesure),
• un rebond moindre de la roue d'échappement contre les palettes de l'ancre,
• une usure moindre.

The application of the principle of controlled dissipation to an escape wheel makes it possible to obtain a wheel which gradually slows down after the pulse function. The resulting benefits are:

• a more continuous aspect of the operation,
• a lesser impact of the fall shock in the rest of the wheels,
• a fall shock less audible by the wearer,
• a fall shock more spaced from the shocks of the other functions during the measurement (ease of measurement),
• a lower rebound of the escape wheel against the pallets of the anchor,
• less wear.

Currently no controlled dissipation system is used on an exhaust mechanism. The dissipation by untimely acceleration, shocks and friction on constant force exhausts, which depend on tribology, are not controlled.

Only the magnetic regulator is a system where the excess energy is dissipated by eddy current, but its action depends on the applied torque, and not on the positioning of the mobiles.

The use of other means of forced dissipation can be envisaged, for example by mechanical friction, by impact, or by the use of an idle wheel driven by friction by the cog and which continues to turn a little while during a rebound because of its inertia, thus increasing the friction during a rebound. Again, mechanical dissipations are difficult to control and size.

Any escape mechanism requiring excess energy dissipation, and in particular any magnetic escapement, benefits from including a system where amplitude and peak of dissipation are controlled. In the magnetic escapement for example, this excess energy causes visible rebounds of the escape wheel against its magnetic stops, which may cause gyrations during micro-shocks, and are also troublesome from a point of contact. aesthetic view.

The invention proposes to manage the energy dissipation in a clock mechanism comprising at least one stator and at least one rotor arranged to cooperate with each other, as a function of the respective angular positions between this stator and this rotor, or these stators or rotors where appropriate.

The present invention proposes, more particularly but not exclusively, to exploit a controlled eddy current dissipation, to dissipate all the excess energy on a single rebound.

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

The invention also relates to an escape mechanism comprising such a regulation mechanism.

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

The invention also relates to a watch comprising such a movement, and / or at least one such regulation mechanism.

The system according to the invention can equally well be introduced into a traditional exhaust, to take advantage of the purely viscous friction, which dissipates much more energy before the fall, where the speed of the wheel is maximum, and decreases the intensity of the fall shock. The rebounds of the wheel against the pallet of the anchor, which are sometimes very important, can thus be minimized, and one can avoid the risk of rupture of the teeth of the wheel, in particular when it is made of silicon or another material similar micro-machinable, or the risk of plastic deformation.

The invention is favorable to the control of isochronism. Indeed, the rebounds of the wheel on an exhaust limit the frequency, because the next alternation must occur at a time when bounces are attenuated, to prevent them from altering the function. Quickly damping these friction allows to have alternations closer in time, and thus to reach a higher oscillator frequency, which allows to generate a better regulating power.

Another application of the invention consists of a fine adjustment system of the amplitude of a pendulum. Indeed, it is important, when sizing an oscillator, not to size an operating amplitude too high, which may generate rebate phenomena during operation of the movements. With an eddy-brake system according to the invention, whose penetration, and therefore dissipation, is adjustable by the watchmaker, it is possible to design pendulums operating at large amplitude, without any risk of rebate, and with dispersion. very low in production.

Brief description of the drawings

• la figure 1 représente, de façon schématisée, et en perspective, une première variante de mécanisme d'échappement magnétique à deux pistes, entre lesquelles est disposée une culasse du frein de Foucault ;
• la figure 2 représente, de façon similaire à la figure 1, une deuxième variante sans dépendance angulaire de la dissipation, et avec un système de réglage fin pour l'horloger par réglage de la pénétration d'une culasse dans l'entrefer entre les pistes;
• la figure 3 représente, de façon similaire à la figure 1, une troisième variante avec frein de Foucault sans dépendance angulaire de la dissipation, situé sur un mobile annexe avec un système de réglage fin pour l'horloger;
• la figure 4 représente, de façon similaire à la figure 1, une quatrième variante avec un frein magnétique avec réglage fin, dans une application de magnétisation radiale des composants magnétiques, et sur un mobile annexe ;
• la figure 5 représente, de façon similaire à la figure 1, une cinquième variante avec un frein magnétique ciblé, dans une application radiale, avec une dépendance angulaire de la dissipation;
• les figures 6 à 8 sont des schémas de principe, en coupe passant par l'axe de rotation du mobile, les figures 6 et 7 avec des configurations de reliefs et creux disposés radialement, et avec deux configurations différentes de parties conductrices et magnétisées, la figure 8 comporte des creux et reliefs disposés axialement ;
• la figure 9 est un schéma-blocs représentant une montre comportant un mouvement qui comporte lui-même un mécanisme d'échappement avec un mécanisme de régulation 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 schematically shows, in perspective, a first variant of two-track magnetic escape mechanism, between which is disposed a Foucault brake yoke;
• the figure 2 represents, similarly to the figure 1 a second variant without angular dependence of the dissipation, and with a fine adjustment system for the watchmaker by adjusting the penetration of a cylinder head in the gap between the tracks;
• the figure 3 represents, similarly to the figure 1 , a third variant with Foucault brake without angular dependence of dissipation, located on a mobile annex with a fine adjustment system for the watchmaker;
• the figure 4 represents, similarly to the figure 1 , a fourth variant with a magnetic brake with fine adjustment, in an application of radial magnetization of the magnetic components, and on a mobile annex;
• the figure 5 represents, similarly to the figure 1 a fifth variant with a targeted magnetic brake, in a radial application, with an angular dependence of the dissipation;
• the Figures 6 to 8 are diagrams in principle, in section passing through the axis of rotation of the mobile, the Figures 6 and 7 with configurations of reliefs and recesses arranged radially, and with two different configurations of conductive and magnetized parts, the figure 8 has recesses and reliefs arranged axially;
• the figure 9 is a block diagram showing a watch having a movement which itself comprises an escape mechanism with a regulation mechanism according to the invention.

Detailed Description of the Preferred Embodiments

The invention proposes to manage the energy dissipation in a clock mechanism comprising at least one stator and at least one rotor arranged to cooperate with each other, as a function of the respective angular positions between this stator and this rotor, or these stators or rotors where appropriate.

The invention applies both to the current case where at least one of the antagonistic components, conventionally the stator, is fixed, to a case where the rotor is a mobile belonging to a first mechanism, and the stator is a another mobile belonging to a second mechanism.

To control these variations according to the respective angular positions, a preferred embodiment of the invention more specifically described here, but not limiting, consists in exploiting, in a clockwork mechanism dedicated to a particular function, the properties of the eddy currents. to specifically dissipate the energy that is not needed for the fulfillment of that particular function.

The invention also seeks to enable the watchmaker to fine tune the impact (positioning) of the dissipative elements.

In particular variants, such a fine adjustment can also be controlled by the movement itself, depending on the remaining power reserve, or any other relevant operating parameter.

Thus, the invention relates to a regulation mechanism 100 for the dissipation of superfluous energy at the completion of the function of a watch mechanism 200 comprising a functional mobile 300, and in particular able to limit the effect of the accelerations due to the operation. the mechanism 200, as well as the effect of untimely accelerations of external origin, including shocks, on such a functional mobile 300.

According to the invention, this regulation mechanism 100 is arranged to control a dissipation of energy in the event of runaway of the functional mobile 300. The regulation mechanism 100 comprises at least one rotor 10, which is kinematically linked to the functional mobile 300, or which is constituted by the functional mobile 300 or is integral with it.

This rotor 10 comprises either a conductive rotor portion 11 which is magnetically permeable, or a magnetized rotor portion 12 which is magnetized.

The regulation mechanism 100 comprises, at the level of an annular zone of magnetic interaction, in the direct vicinity and vis-à-vis the conductive rotor part 11 or respectively the magnetized rotor part 12, at least one stator 20 arranged to cooperate with this rotor 10.

The stator 20 then comprises a magnetized stator part 21 which is magnetized, or respectively a magnetically permeable conductive stator part 22, according to the arrangement of the rotor 10 with which it cooperates.

By conductive material is meant an electrical conductor, carrying electrical charges, such as copper, silver, or the like, according to the practice of the skilled person.

In the annular zone of magnetic interaction, at least the rotor 10 or the stator 20 comprises at least one raised zone 15, 25, in which the rotor 10 or the stator 20 is capable of superposing with respectively the stator 20 or the rotor 10 in a magnetic interaction. And in this same area at least the rotor 10 or the stator 20 comprises at least one hollow zone 16, 26, in which the rotor 10 or the stator 20 can not come into magnetic interaction with the stator 20 or the rotor 10, respectively. The energy depends on the relative angular position of the rotor 10 and the stator 20, and can only occur when solid portions of the rotor 10 and the stator 20 face each other in the annular zone.

More particularly, the regulation mechanism 100 is arranged to control an energy dissipation by eddy currents in case of runaway of the functional mobile 300 in the annular zone.

More particularly, at least the rotor 10 or the stator 20 comprises an alternation of such relief zones 15, 25, in which the rotor 10 or the stator 20 is capable of superposing with the stator 20 or the rotor 10 respectively in a generating interaction of eddy currents. And at least the rotor 10 or the stator 20 comprises an alternation of such recessed areas 16, 26, in which the rotor 10 or the stator 20 is not likely to superpose respectively with the stator 20 or the rotor 10, and where the interaction between the rotor 10 and the stator 20 can not generate eddy currents.

The speed of the rotor 10 depends on the mechanism 200 to be regulated. But the invention is not intended to regulate the speed of this rotor, but to dissipate the energy during an abnormal acceleration printed at this mechanism 200.

The invention is described herein, more particularly for application to an exhaust mechanism. This application is not limiting.

In this application to an escape mechanism 200, the speed of the rotor 10 depends on the speed of an escape wheel 3 that this escapement mechanism 200 comprises. The conductive rotor part 11, or the magnetized rotor part 12, may be all or part of the escape wheel 3 itself.

The first variant of the figure 1 presents an application of the system to a magnetic type escapement mechanism 200, comprising two magnetized rotor parts 12, which are an upper wheel 13 and a lower wheel 14, here coaxial and parallel, in the air gap of which is arranged parallel a cylinder head 23 which forms a conductive stator part 22. This yoke 23 comprises at the periphery an alternation of teeth 4 and notches 5. The upper wheel 13 and a lower wheel 14 also have teeth 153 and 154. The teeth 4 of the yoke 23 are arranged to, in certain relative positions, come opposite and in close proximity to the teeth 153 or 154, allowing the establishment of the eddy currents and the controlled dissipation of energy. Each of the notches 5 of the yoke 23 is arranged to prohibit the interaction between the material of the yoke 23 and the teeth 153 or 154 which are opposite this notch 5 considered. These teeth 4 and notches 5 of the yoke 23 thus manage the angular dependence of the dissipation, which can then be dimensioned to be maximum during rebounds. The choice of the material, the thickness and the penetration of the conductive rotor part 11 makes it possible to size the intensity of the dissipation, which can be chosen to operate in critical damping, with a stop without any rebound.

It is also possible to implement such a device on at least one mobile annex 7, connected to the exhaust by a set of wheels, as visible on the Figures 3 and 4 . Such an embodiment on a mobile annex 7 generates less congestion constraints, and may allow a greater dissipation.

It is naturally possible to introduce several targeted dissipation systems, on several different mobiles connected by a gear train. The advantage is to obtain a greater dissipation and an averaging of the defects of the different systems.

It is advantageous to be able to adjust the maximum intensity of the eddy currents, by regulating the eddy dissipation by a manual or mechanically controlled modification of the penetration or the distance between the conductive and magnetized parts: conductive rotor part 11 cooperating with a magnetized stator part 21, or magnetized rotor part 12 cooperating with a conductive stator part 22.

An exemplary embodiment according to the scheme of the figure 1 constitutes a minimal, non-optimized embodiment of the concept of the invention. A rotor upper wheel and a lower wheel each comprise six teeth separated by notches of triple angular amplitude of that of the teeth, while the stator head has six teeth and six notches of the same amplitude. The thickness of the conductive stator part is 0.2 mm, and its conductivity is 5.998 · 10 ⁷ S / m in the case of a copper embodiment. The upper and lower rotor wheels each have the size of an escape wheel usual watchmaking, and the remanent field magnetic tracks is at least 1 T. The distance between the magnets and the conductive portion is at most 0.10 mm. The dissipated energy is thus of the order of 0.25 μj · ms, in a very simple embodiment where the conductive part undergoes a very weak field. Of course, a solution with alternating magnetizations in sense on a mobile annex, in particular according to the figure 3 , allows to significantly increase this dissipation; it is the same with a stronger sizing of the different components. Magnetic exhaust mechanisms are described in the patent applications CH02140 / 13 , CH01416 / 14 and CH01129 / 15 The Swatch Group Research and Development Ltd. CH01444 / 14 and CH 01445/14 of the Nivarox-FAR SA Company, CH01290 / 14 and CH01127 / 15 of ETA Manufacture Horlogère Suisse, incorporated herein by reference.

The figure 2 shows a second variant, relating to an application where the regulation mechanism 100 comprises first adjustment means 50 of the angular position of the stator 20, here constituted by an eccentric screw 6 which makes it possible to adjust the penetration of the conductive stator part 22, here limited to an angular sector, in the gap between an upper wheel 13 and a lower wheel 14.

A particular application concerns the fine adjustment of the amplitude of a balance, by adjusting the Foucault dissipation by a manual or controlled modification of the penetration or the distance between the conductive part and the magnetized part, in the zone annular, with such a device.

The figure 3 presents a third variant, with a brake system without angular dependence, on a mobile annex 7. On this type of mobile magnets have alternating axial magnetizations: NS, SN, NS. This makes it possible to maximize the field variation, on the angular dependence, and thus maximize the variation of magnetic flux when the conductive part is moving in the field of the magnets. Since the brake is proportional to the flow variation, a maximum brake is obtained when the magnets of the upper part are aligned with those of the lower part, NS opposite NS, and a minimum brake when the magnets are in opposition, NS in face of SN. This variant allows a strong dissipation thanks to a great freedom of dimensioning, because there is no direct impact on the functions of the exhaust, contrary to the variant of the figure 2 , and thanks to the use of rare earth magnets.

More particularly, the regulation mechanism 100 comprises second adjustment means 60 of the angular position of at least one of the rotors 10 relative to the others: a fine adjustment is made by turning one of the upper wheel 13 and the lower wheel 14 , here constituted of magnet plates, relative to each other, with the aid of a control pinion 61, in order to deindex the magnets and to reduce the variation of magnetic flux caused by a rotation of the mobile. The rare earth magnets may have a direction of alternating magnetization or not.

Such a mechanism can also be realized by using a conductive rotor part 11 cooperating with a magnetized stator part 21, or a magnetized rotor part 12 cooperating with a conductive stator part 22, which are arranged to approach axially, instead of varying the penetration.

The modulation of the dissipated energy amplitude may, again, be obtained by varying the thickness of the conductive part or the magnetized part. It is thus possible to produce such a mechanism, in particular by using a conductive rotor part 11 cooperating with a magnetized stator part 21, or a magnetized rotor part 12 cooperating with a conductive stator part 22, the thickness of which varies, instead of varying the penetration .

• La figure 4 montre une quatrième variante avec une application radiale, qui est de ce fait moins encombrante axialement, avec un anneau conducteur 8 formant une partie rotorique conductrice 11, dont la distance par rapport à un aimant 9 qui constitue une partie statorique magnétisée 21 et est porté par une bascule 90 réglable par une vis excentrique 6.
• La figure 5 présente une cinquième variante avec un système radial avec réglage fin, avec une partie rotorique conductrice 11 solidaire d'une roue d'échappement 3, et avec une dépendance angulaire de la dissipation, obtenue par un profil périphérique variable avec des reliefs 31 et des creux 32 en périphérie de cette partie rotorique conductrice 11. Là aussi, une bascule 90 qui porte un aimant 9 qui constitue une partie statorique magnétisée 21 est réglable en position, par une vis excentrique 6.

With regard to the variation of the dissipation as a function of the variation of thickness, the dependence is approximately linear: by imposing a variation of thickness of 50%, one obtains, on the example cited above on the base of the figure 1 , a dissipation variation close to 50%, which, in combination with the high speed of the escape wheel during the dissipation phase, is sufficient to dissipate the superfluous energy of internal origin to the mechanism. The limit case of variation of thickness is of course a variation of 100%, which amounts to the notches separating the teeth illustrated in the figures. In order to take account of particular constraints of space, it is possible to prefer constructions with a non-axial, typically radial magnetization of the magnetic components.

• The figure 4 shows a fourth variant with a radial application, which is therefore less cumbersome axially, with a conductive ring 8 forming a conductive rotor portion 11, whose distance relative to a magnet 9 which constitutes a magnetized stator part 21 and is carried by a rocker 90 adjustable by an eccentric screw 6.
• The figure 5 presents a fifth variant with a radial system with fine adjustment, with a conductive rotor portion 11 secured to an escape wheel 3, and with an angular dependence of the dissipation, obtained by a variable peripheral profile with reliefs 31 and recesses 32 also on the periphery of this conductive rotor part 11. Again, a rocker 90 which carries a magnet 9 which constitutes a magnetized stator part 21 is adjustable in position by an eccentric screw 6.

The invention more particularly relates to a watchmaker escapement mechanism 200 comprising at least one escape wheel 300, and this escapement mechanism 200 comprises such a regulation mechanism 100, designed to limit the effect of accelerations, in particular shocks. , on this escape wheel 300.

The invention also relates to a watch movement 400 comprising at least one such escapement mechanism 200.

The invention also relates to a watch 500 comprising at least one watch movement 400, or / and at least one such regulation mechanism 100.

For example, the watch 500 comprises another mechanism 600, independent of the movement 400, controlled by such a regulation mechanism 100.

The invention is still applicable to other mobile devices, such as automotive equipment, naval, air, ammunition retarders, or the like.

In order to protect the outside of the watch, in particular the wearer and the sensitive devices, against the magnetic fields of such a system, and in order to increase the efficiency of this system, it is possible and advantageous to introduce a shield ferromagnetic, not shown in the figures.

The generation of eddy currents is related to a field variation, the first being precisely generated by the second (local variation at best). On the variant of the figure 1 , via the teeth of the wheel and the clearances, the field varies in the same way that it would vary with a thickness which changes (in the strict sense, it is even the limiting case where the thickness varies between 0 and a value fixed). On the figure 5 it is the radial conductor thickness and its proximity to the field that vary both, the same system is still possible with an axial thickness variation.

• la suppression des rebonds, sans pour autant affecter le rendement,
• l'amélioration des sécurités, avec un fonctionnement amélioré lors de micro-chocs,
• un fonctionnement plus continu des rouages,
• un réglage fin de l'amplitude des oscillateurs, et notamment autorisant une haute amplitude sans risque de rebat,
• des chocs de chute moins audibles, tout en étant plus facilement identifiables, et temporellement plus espacés des chocs des autres fonctions, ce qui procure une nouvelle facilité de mesure,
• une usure moindre, et
• moins de limitation de la fréquence.

In short, the invention provides many advantages:

• the elimination of rebounds, without affecting performance,
• improved security, with improved operation during micro-shocks,
• a more continuous operation of the wheels,
• a fine adjustment of the amplitude of the oscillators, and in particular allowing a high amplitude without risk of rebate,
• less audible falling shocks, while being more easily identifiable, and temporally more spaced from the shocks of the other functions, which provides a new ease of measurement,
• less wear, and
• less limitation of the frequency.

Claims (12)

A regulation mechanism (100) for dissipating unnecessary energy upon completion of the function of a watch mechanism (200) having a functional wheel (300), characterized in that said regulating mechanism (100) is arranged to controlling a dissipation of energy in case of runaway of said functional mobile (300), said regulation mechanism (100) comprising at least one rotor (10) kinematically connected to said functional mobile (300) or constituted by said functional mobile (300) and having either a conductive rotor portion (11) which is magnetically permeable, or a magnetized rotor portion (12) which is magnetized, and said regulating mechanism (100) having at an annular interaction zone magnetic, in the direct vicinity and vis-à-vis said conductive rotor part (11) or respectively of said magnetized rotor part (12), at least one stator (20) having a stator part magnetized magnetism (21) or a magnetically permeable conductive stator portion (22), and that in said annular magnetic interaction zone at least said rotor (10) or said stator (20) comprises at least a raised area (15; 25) in which said rotor (10) or said stator (20) is superposable with said stator (20) or said rotor (10) respectively in a magnetic interaction, and in which annular zone at least said rotor (10) ) or said stator (20) comprises at least one hollow zone (16; 26) in which said rotor (10) or said stator (20) can not come into magnetic interaction with said stator (20) or said rotor (10) respectively. ), and characterized in that said regulating mechanism (100) is arranged to control an eddy current energy dissipation in said annular zone in case of runaway of said functional mobile (300), the energy dissipation depending on the relative angular position of said rotor (10) and said stator (20) and occurring only when solid portions of said rotor (10 and said stator (20) are facing each other in said annular zone. Regulating mechanism (100) according to claim 1, characterized in that at least said rotor (10) or said stator (20) comprises an alternation of said raised zones (15; 25) in which said rotor (10) or said stator (20) is superposable with said stator (20) or said rotor (10) respectively in an eddy currents generating interaction, and in that at least said rotor (10) or said stator (20) comprises an alternation of said recessed zones (16; 26) in which said rotor (10) or said stator (20) is not likely to overlap with respectively said stator (20) or said rotor (10) and wherein the interaction between said rotor (10) and said stator (20) can not generate eddy currents. Regulating mechanism (100) according to claim 2, characterized in that , in said annular zone, both said rotor (10) and said stator (20) each comprise a succession of raised zones (15; 25) in which said rotor (10) or said stator (20) is superposable with said stator (20) or said rotor (10) respectively, in an eddy current generating interaction, and recessed zones (16; 26) wherein said rotor (10) or said stator (20) is not superimposable with said stator (20) or said rotor (10) respectively, and wherein the interaction between said rotor (10) and said stator (20) can not generate eddy currents. Control mechanism (100) according to one of claims 1 to 3, characterized in that said control mechanism (100) comprises first means (50) for adjusting the angular position of said stator (20). Regulating mechanism (100) according to one of claims 1 to 4, characterized in that said regulating mechanism (100) comprises a plurality of said coaxial rotors (10), at least two of which together define an air gap (E) in which is housed a said stator (20). Control mechanism (100) according to claim 5, characterized in that said control mechanism (100) comprises second means (60) for adjusting the angular position of at least one of said rotors (10) with respect to the others. Regulating mechanism (100) according to one of claims 1 to 6, characterized in that said recessed areas (16; 26) and raised areas (15; 25) extend in a plane perpendicular to the pivot axis said rotor (10), for a radial approximation or removal of said rotor (10) and said stator (20). Regulating mechanism (100) according to one of claims 1 to 6, characterized in that said recessed areas (16; 26) and relief (15; 25) extend in a direction parallel to the pivot axis said rotor (10), for an approximation or an axial distance of said rotor (10) and said stator (20). Regulating mechanism (100) according to one of claims 1 to 8, characterized in that said conductive portion and / or said magnetized portion has a variable thickness for the modulation of the dissipated energy amplitude. Watchmaker exhaust mechanism (200) comprising at least one escape wheel (300), characterized in that said exhaust mechanism (200) comprises a regulation mechanism (100) according to one of claims 1 to 8 , arranged to limit the effect of accelerations on said escape wheel (300). Clockwork movement (400) comprising at least one escape mechanism (200) according to claim 10. Watch (500) comprising at least one watch movement (400) according to claim 10, and / or at least one control mechanism (100) according to one of claims 1 to 9.

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