EP3128379A1 - Escapement with escape wheel with field rramps and a non-return device - Google Patents
Escapement with escape wheel with field rramps and a non-return device Download PDFInfo
- Publication number
- EP3128379A1 EP3128379A1 EP15179709.9A EP15179709A EP3128379A1 EP 3128379 A1 EP3128379 A1 EP 3128379A1 EP 15179709 A EP15179709 A EP 15179709A EP 3128379 A1 EP3128379 A1 EP 3128379A1
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- EP
- European Patent Office
- Prior art keywords
- potential
- zone
- exhaust mechanism
- escape wheel
- track
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B15/00—Escapements
- G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
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- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C5/00—Electric or magnetic means for converting oscillatory to rotary motion in time-pieces, i.e. electric or magnetic escapements
- G04C5/005—Magnetic or electromagnetic means
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B11/00—Click devices; Stop clicks; Clutches
- G04B11/02—Devices allowing the motion of a rotatable part in only one direction
- G04B11/026—Devices allowing the motion of a rotatable part in only one direction with clamping member
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
- G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
- G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
- G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
- G04C3/066—Constructional details, e.g. disposition of coils
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- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
- G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
- G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
- G04C3/067—Driving circuits with distinct detecting and driving coils
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C5/00—Electric or magnetic means for converting oscillatory to rotary motion in time-pieces, i.e. electric or magnetic escapements
Definitions
- the invention relates to a watch exhaust mechanism comprising at least one resonator and at least one escape wheel arranged to cooperate with a said resonator mechanism, either directly or indirectly through a stopper that includes said escape mechanism, said escape wheel comprising a succession of tracks carrying potential ramps of magnetic or electrostatic field, said ramps being arranged to cooperate with said resonator or respectively with said stop.
- the invention also relates to a watch movement comprising at least one such escape mechanism.
- the invention also relates to a watch comprising at least one such escape mechanism.
- the invention relates to the field of exhaust mechanisms for mechanical watchmaking, and more particularly the field of controlled field escapements, known as magnetic exhausts, or electrostatic exhausts, or the like.
- Such a device significantly improves the efficiency of the exhaust, due to reduced or non-existent contacts.
- its development is especially effective when the operation is not too abrupt. This is indeed to mitigate rebounds of the escape wheel, which can, if they are not controlled, lead to an unstable situation.
- the escape wheel provides spiral balance a certain amount of energy, from a barrel or other similar accumulator. The excess kinetic energy of the escape wheel is dissipated when one of its teeth falls on the rest plane of the pallet of the anchor, during the fall. This shock, very intense, effectively prevents the escape wheel from bouncing.
- a non-return device such as a ratchet or the like in an exhaust device with a stop cooperating with a balance plate, and with magnetic or electrostatic field barriers, in particular in the form of a magnetic anchor, is to prevent the escape wheel from bouncing on the magnetic barriers, or electrostatic as appropriate.
- the invention proposes to block the rebounds of such a magnetic or electrostatic exhaust device, by adding a non-return device, which makes it possible to temporarily store the energy of the escape wheel in the magnetic potential or electrostatic, in order to be able to return it to the balance or the like during the exhaust function, which has the effect of significantly increase the efficiency of this type of exhaust, especially when the torque provided by the barrel or the accumulator is high.
- the invention is concerned with increasing the energy efficiency of the escapement mechanism and the movement.
- the invention relates to a clock escapement mechanism according to claim 1.
- the invention also relates to a watch movement comprising at least one such escape mechanism.
- the invention also relates to a watch comprising at least one such escape mechanism.
- the invention proposes a simple and reliable solution for controlling the rebounds of a magnetic or electrostatic exhaust device, by adding a non-return device, which makes it possible to increase the efficiency of this type exhaust, especially when the torque provided by the barrel or the accumulator is high.
- This non-return mechanism makes it possible to accumulate the energy of the barrel or similar, to restore it in the resonator.
- the invention relates to a horological escapement mechanism 200 comprising at least one resonator 100.
- the escape mechanism 200 comprises at least one escapement mobile. This mobile is described and illustrated here in the particular and non-limiting case of an escape wheel 1, but it can take other forms, such as a cylinder, or other.
- the escape mechanism 200 comprises at least one escape wheel 1, which is arranged to cooperate with such a resonator mechanism 100, either directly or indirectly through a stop 2 which comprises this exhaust mechanism 200.
- a stopper escapement this stopper 2 being constituted in a particular example, again non-limiting, by a pivoting anchor comprising, as the case may be, a single polar mass 3 arranged to cooperate alternately with tracks of the escape wheel comprising magnetic or electrostatic fields of variable intensity, or two polar masses 3 arranged to cooperate alternately with at least one track 4 of the escape wheel 1 comprising magnetic or electrostatic fields d variable intensity.
- the invention also applies to other types of exhaust mechanisms, cylinder, natural, or other, in the case of direct cooperation without stop.
- the escape wheel 1 comprising a succession of tracks 4, or alternatively, according to the variants described below 40, 41, 42. These tracks 4 carry ramps 6 of increasing magnetic or electrostatic field potential. These ramps 6 are arranged to cooperate with the resonator 100, or respectively with the stopper 2.
- this escapement mechanism 200 comprises at least one anti-return device 5, which is arranged to oppose the return of the escape wheel 1, that is to say to prevent it from backward from its normal direction of rotation.
- the escapement mechanism 200 comprises a stopper 2 cooperating on the one hand with a plate that includes the mechanism resonator 100, in particular a balance plate in the case of a balance-spring resonator, and cooperating on the other hand with ramps 6 of magnetic field or electrostatic potential, by at least one polar mass 3, or, according to the variants described below 30, 31, 32, that includes this stop 2.
- This polar mass 3 is arranged to evolve in the field corresponding to these ramps 6 of magnetic or electrostatic field potential.
- the figure 1 resumes the lessons of the request EP28871573 , relating to a magnetic escapement device 200 with a single polar pole retainer 2 pivoting so as to cooperate alternately with an inner track and an outer track, as shown in FIG. figure 10 .
- This diagram illustrates the variation of the potential energy, along the ordinate, along the magnetized tracks, as a function of the angle at the center on the abscissa, for each of the two tracks of the figure 1 : internal track in solid line, and outer track in broken lines, each comprising a succession of magnetized zones with different intensities, and exerting different repulsion efforts in interaction with the polar mass of the anchor when the latter is in their vicinity immediately, the zones immediately adjacent to the two concentric neighboring tracks being also of different magnetization level.
- This figure 1 shows the accumulation of potential energy taken from the escape wheel 1 on the sections P1-P2 and P3-P4 each corresponding to half a period, and its restitution by the anchor 2 to the pendulum during the change of track of polar mass P2-P3 and P4-P5.
- This figure 1 shows a particular position PP, at a significant slope change between a ramp 6 and a potential barrier 7 which extends it, around which position PP bounces are damped due to the play of the potential slopes of the fields.
- the value ER denotes the energy of the ramp 6 at this point, that is to say the difference between the energy level of this particular point PP, and the minimum potential level of the tracks 4 of the escape wheel 1 .
- the energy dissipation during rebounds is conventionally done by friction, at least partially viscous, especially at the pivots, and aerodynamic losses, as visible on the figure 2 .
- the tipping point is fixed, perfectly reproducible, and the transmitted energy is constant.
- the anchor always switches to the same position, at the foot of the magnetic barrier when it exists (which is not always the case, one can also have the combination of a simple ramp and a mechanical stop to play the role of the potential barrier).
- the stopper or anchor therefore always transmits the same amount of energy to the balance, which makes it a system with constant force, the surplus being dissipated by rebounds.
- the triangular zone represents the absolute amount of energy lost by the rebounds of the magnetic wheel.
- the figure 4 shows, in the same order, the same quantities which are represented in relative values with respect to the total power supplied to the escape wheel. This figure 4 shows that, when the torque of the barrel is high, the proportion of energy lost (not transmitted to the sprung balance) in rebounds becomes very important, almost 50%. Full removal of bounces is not possible.
- the invention is compelled to minimize as much as possible these rebounds by adding a non-return device, such as a ratchet or the like, acting on the escape wheel.
- a non-return device such as a ratchet or the like
- the exhaust can therefore transfer more energy to the sprung balance.
- the yield is improved.
- the system loses its constant force characteristic and becomes a variable force exhaust with the torque, like a traditional Swiss anchor escapement.
- the stop 2 comprises a polar mass 3 which is a single polar mass 30 arranged to cooperate successively and alternately with two tracks 4 which are a first track 41 and a second track 42.
- the stopper 2 comprises two polar masses 3, which are a first polar mass 31 and a second polar mass 32, arranged to cooperate successively and alternately with a track 4 which is a single track 40.
- the escape wheel 1 comprises, arranged periodically in a pitch P, a plurality of useful zones ZU, each located between, on the one hand, a zone of minimum potential of such a track 4, 40, 41, 42, given, and on the other hand a zone of maximum potential of such a track 4, 40, 41, 42, which zone of maximum potential immediately follows the zone of potential minimum considered of this given track.
- the magnetic or electrostatic field potential ramps 6 disposed on these tracks 4, 40, 41, 42 each comprise a potential barrier 7 at their end of maximum field potential, tending to oppose its crossing by a polar mass 3 of the stop 2.
- each ramp 6 is extended by a barrier 7 of magnetic or electrostatic field, this barrier 7 comprising immediately following the ramp 6, at the particular point PP, a first zone 71 of rapid growth potential whose gradient is greater than the maximum gradient of the ramp 6 concerned.
- This first zone 71 is followed by a second zone 72 of potential maximum where the concavity of the potential curve is inverted with respect to the first zone 71.
- the second zone 72 is immediately followed by a third zone 73 of potential decay. where the concavity of the potential curve is reversed with respect to the second zone 72, and this third zone 73 ends with a fourth zone 74 of minimum potential.
- each useful zone ZU is located between, on the one hand, a fourth zone 74 of potential minimum of a said track 4, 40, 41, 42, given, and on the other hand a second zone 72 of maximum potential of such a track 4, 40, 41, 42, immediately following this fourth zone 74 of potential minimum of this given track. And each crossing of such a second region 72 of maximum potential of a track 4, 40, 41, 42, by such a polar mass 3, 30, 31, 32, corresponds to a tilting of the stopper 2.
- each said first zone 71 immediately follows the fourth zone 74 preceding.
- each first zone 71 immediately follows the fourth zone 74 previous.
- each first zone 71 is separated from the fourth zone 74 preceding by a fifth zone 75 of constant potential or zero.
- each first zone 71 is separated from the fourth zone 74 preceding by a fifth zone 75 of constant or zero potential.
- the ramps 6 of magnetic or electrostatic field potential arranged on the lanes 4 have no potential barrier at their maximum potential end, and the tracks 4 each comprise alternating zones of zero potential and such ramps 6. And, advantageously, in such cases, the ramps 6 of potential of magnetic or electrostatic field disposed on the tracks 4, 40, 41, 42, are each associated, at its zone of maximum potential, with a mechanical stop preventing its crossing by a polar mass 3 of the stop 2
- the non-return device 5 may comprise, without limitation: a compression pawl 51, a traction pawl 52, an internal compression pawl 53, or an inner pull pawl, or combinations of these different pawls, or any other mechanism tending to oppose the retreat of the escape wheel 1.
- the figure 6 shows a compression pawl 51 comprising a first elastic connection with a first fixed part of the escape mechanism 200 outside the stop 2 and the escape wheel 1, this compression pawl 51 cooperates with at least one fixed toothing 10 in pivoting of the escape wheel 1.
- a single pawl 51 is shown not to overload the figure, but it is clear, as for the other variants, that the mechanism may comprise a plurality of such ratchets, including types different. In the same way, the mechanism may comprise several teeth, for example above and below the median plane of the wheel 1, and possibly alternately.
- this at least one toothing 10 is a toothing with wolf teeth, allowing the advance of the escape wheel 1 by sliding on the compression pawl 51 and opposing the retreat of the escape wheel 1 subjecting this at least one compression pawl 51 to a buckling force when the escape wheel 1 tends to recoil.
- the non-return device 5 comprises at least one traction pawl 52 comprising a second elastic connection with a second fixed part of the escape mechanism 200 outside the stop 2 and the escape wheel 1.
- This at least one pulling pawl 52 cooperates with this at least one toothing 10, and is arranged to operate in traction and exert on the escape wheel 1 a torque tending to advance, when the escape wheel 1 tends to move back.
- This pulling pawl 52 can be either constituted by the previous compression pawl 51, consisting of a separate ratchet.
- the toothing 10 is preferably arranged in a similar manner to the previous case.
- the ratchet is loaded onto the escape wheel and the teeth are arranged on a fixed wheel.
- the non-return device 5 then comprises at least one inner compression pawl 53 comprising a third elastic connection with the escape wheel 1 and cooperating with at least one toothing 10 that comprises a toothed ring internally fixed on a fixed part of the mechanism of Exhaust 200 outside the stop 2 and the escape wheel 1.
- this at least one set of teeth 10 periodically comprises, in alternation with zones provided with teeth 11, zones devoid of teeth 12 to minimize losses when the non-return function is not necessary, when said polar mass 3 the stop 2 cooperates with a zone 8 of zero potential (or zero gradient: constant potential) of a track 4, 40, 41, 42, or a low potential area of a ramp 6.
- the at least one toothing 10 must have at least one tooth 13 on each useful zone ZU. This reduces the cost of cutting or cutting teeth.
- the figure 10 shows three teeth 13 only for each useful zone ZU.
- this at least one toothing 10 comprises, on the zones provided with teeth that it comprises, at least twenty times more teeth than the escape wheel 1 does not have P steps (also called tooth equivalents ), each pitch P corresponding to the race between two successive tilts of the stop 2.
- P steps also called tooth equivalents
- the figure 6 illustrates a variant of non-return device constituted by a pawl on the magnetic escape wheel.
- the pawl has a high resolution, which ensures that the anti-return wheel is performed correctly.
- the anti-return device comprises at least twenty times more teeth than there are teeth equivalents to the escape wheel.
- the arming of the ratchet teeth consumes a little energy and alters the performance of the exhaust. It is possible to minimize this problem by placing teeth only in the functional regions, as shown on the diagram. figure 7 .
- the auto-start of the exhaust is then also improved, provided that the ratchet blade is not too pre-armed.
- the figure 7 thus shows areas spared, so as to minimize losses, in areas of work where the anti-return function is not necessary, that is to say in areas of lower (or zero) potential of field.
- the figures 6 and 7 show a first variant where the pawl comprises an elastic blade, which works in compression when the wheel tries to move back.
- a second variant, in figure 8 relates to a pawl that works in traction, when the wheel tends to move back.
- the presence of a non-return device offers another advantage that combines with the advantages of operation: the magnetic potential may be lower, which simplifies the manufacture of magnets, and lowers costs.
- Another combination is to use the original potential, but with a cylinder dimensioned to the fair, so much less bulky, which is still sought after in watchmaking, especially in the case of ladies' watches or watches with complications.
- the figure 9 illustrates another simplified embodiment, with magnetic or electrostatic tracks without a field barrier, only with alternating ramps, with zones of zero potential, interspersed between the ramps, as shown in figure 8 .
- the start is further simplified, and the usable torque range is even greater.
- exhaust mechanisms according to the invention is possible both with traditional technologies, including milling or stamping, or laser machining to obtain a higher resolution, appreciable for the machining of the toothing 10.
- the invention also relates to a watch movement comprising at least one such escape mechanism.
- the invention also relates to a watch comprising at least one such escape mechanism
- the anti-return device makes it possible, at the cost of a low-cost and limited space arrangement, to obtain a large increase in the efficiency of the exhaust mechanism, and consequently of the power reserve of the movement.
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Abstract
Mécanisme d'échappement (200) d'horlogerie comportant au moins un résonateur (100) et au moins une roue d'échappement (1) agencée pour coopérer avec un tel mécanisme résonateur (100), ou bien directement, ou bien indirectement au travers d'un arrêtoir (2) que comporte ce mécanisme d'échappement (200), cette roue d'échappement (1) comportant une succession de pistes (4) porteuses de rampes (6) de potentiel de champ magnétique ou électrostatique, ces rampes (6) étant agencées pour coopérer avec le résonateur (100) ou respectivement avec l'arrêtoir (2). Ce mécanisme d'échappement (200) comporte un dispositif anti-retour (5) agencé pour s'opposer au recul de la roue d'échappement (1).Watch exhaust mechanism (200) comprising at least one resonator (100) and at least one escape wheel (1) arranged to cooperate with such a resonator mechanism (100), or directly, or indirectly through a stop (2) that includes the exhaust mechanism (200), the escape wheel (1) comprising a succession of tracks (4) carrying ramps (6) of magnetic or electrostatic field potential, these ramps (6) being arranged to cooperate with the resonator (100) or respectively with the stop (2). This escape mechanism (200) comprises a non-return device (5) arranged to oppose the recoil of the escape wheel (1).
Description
L'invention concerne un mécanisme d'échappement d'horlogerie comportant au moins un résonateur et au moins une roue d'échappement agencée pour coopérer avec un dit mécanisme résonateur, ou bien directement, ou bien indirectement au travers d'un arrêtoir que comporte ledit mécanisme d'échappement, ladite roue d'échappement comportant une succession de pistes porteuses de rampes de potentiel de champ magnétique ou électrostatique, lesdites rampes étant agencées pour coopérer avec ledit résonateur ou respectivement avec ledit arrêtoir.The invention relates to a watch exhaust mechanism comprising at least one resonator and at least one escape wheel arranged to cooperate with a said resonator mechanism, either directly or indirectly through a stopper that includes said escape mechanism, said escape wheel comprising a succession of tracks carrying potential ramps of magnetic or electrostatic field, said ramps being arranged to cooperate with said resonator or respectively with said stop.
L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel mécanisme d'échappement.The invention also relates to a watch movement comprising at least one such escape mechanism.
L'invention concerne encore une montre comportant au moins un tel mécanisme d'échappement.The invention also relates to a watch comprising at least one such escape mechanism.
L'invention concerne le domaine des mécanismes d'échappement pour horlogerie mécanique, et plus particulièrement le domaine des échappements à champ contrôlé, dit échappements magnétiques, ou échappements électrostatiques, ou similaires.The invention relates to the field of exhaust mechanisms for mechanical watchmaking, and more particularly the field of controlled field escapements, known as magnetic exhausts, or electrostatic exhausts, or the like.
Le document
Un tel dispositif améliore de façon très conséquente le rendement de l'échappement, du fait des contacts réduits ou inexistants. Toutefois, sa mise au point est surtout efficace quand le fonctionnement n'est pas trop brusque. Il s'agit en effet d'atténuer les rebonds de la roue d'échappement, qui peuvent, s'ils ne sont pas maîtrisés, conduire à une situation instable. Dans un échappement à ancre suisse traditionnel, entièrement mécanique, la roue d'échappement fournit au balancier-spiral une certaine quantité d'énergie, en provenance d'un barillet ou autre accumulateur similaire. L'excès d'énergie cinétique de la roue d'échappement est dissipé lorsqu'une de ses dents tombe sur le plan de repos de la palette de l'ancre, lors de la chute. Ce choc, très intense, empêche efficacement la roue d'échappement de rebondir.Such a device significantly improves the efficiency of the exhaust, due to reduced or non-existent contacts. However, its development is especially effective when the operation is not too abrupt. This is indeed to mitigate rebounds of the escape wheel, which can, if they are not controlled, lead to an unstable situation. In a traditional, fully mechanical Swiss lever escapement, the escape wheel provides spiral balance a certain amount of energy, from a barrel or other similar accumulator. The excess kinetic energy of the escape wheel is dissipated when one of its teeth falls on the rest plane of the pallet of the anchor, during the fall. This shock, very intense, effectively prevents the escape wheel from bouncing.
Dans un échappement à barrières de champ magnétique ou électrostatique tel qu'il est décrit dans les demandes
Les rebonds sont nécessaires pour un fonctionnement à force constante puisqu'ils permettent de dissiper l'excédent d'énergie. Néanmoins, il est important de contrôler leur durée qui doit être inférieure à la demi-période pour que le système fonctionne de façon stable. D'autre part, il est intéressant d'empêcher totalement les rebonds afin de stocker l'excédent d'énergie dans le potentiel magnétique, ou électrostatique selon le cas, de sorte à pouvoir recycler cette énergie, ce qui a alors pour effet d'augmenter le rendement de l'échappement de façon significative.Bounces are needed for constant strength operation as they help dissipate excess energy. Nevertheless, it is important to control their duration which must be less than the half-period for the system to work stably. On the other hand, it is interesting to completely prevent rebounds to store the excess energy in the magnetic potential, or electrostatic as appropriate, so as to recycle this energy, which then has the effect of increase the efficiency of the exhaust significantly.
L'objectif d'un dispositif anti-retour, tel qu'un cliquet ou similaire dans un dispositif d'échappement avec un arrêtoir coopérant avec un plateau de balancier, et avec des barrières de champ magnétique ou électrostatique, notamment sous la forme d'une ancre magnétique, est d'empêcher la roue d'échappement de rebondir sur les barrières magnétiques, ou électrostatiques selon le cas.The purpose of a non-return device, such as a ratchet or the like in an exhaust device with a stop cooperating with a balance plate, and with magnetic or electrostatic field barriers, in particular in the form of a magnetic anchor, is to prevent the escape wheel from bouncing on the magnetic barriers, or electrostatic as appropriate.
L'invention se propose de bloquer les rebonds d'un tel dispositif d'échappement magnétique ou électrostatique, par ajout d'un dispositif anti-retour, lequel permet de stocker temporairement l'énergie de la roue d'échappement dans le potentiel magnétique ou électrostatique, afin de pouvoir la restituer au balancier ou similaire lors de la fonction d'échappement, ce qui a pour effet d'augmenter notablement le rendement de ce type d'échappement, en particulier lorsque le couple fourni par le barillet ou l'accumulateur est élevé.The invention proposes to block the rebounds of such a magnetic or electrostatic exhaust device, by adding a non-return device, which makes it possible to temporarily store the energy of the escape wheel in the magnetic potential or electrostatic, in order to be able to return it to the balance or the like during the exhaust function, which has the effect of significantly increase the efficiency of this type of exhaust, especially when the torque provided by the barrel or the accumulator is high.
Et, plus particulièrement, l'invention s'attache à augmenter le rendement énergétique du mécanisme d'échappement et du mouvement.And, more particularly, the invention is concerned with increasing the energy efficiency of the escapement mechanism and the movement.
A cet effet, l'invention concerne un mécanisme d'échappement d'horlogerie selon la revendication 1.For this purpose, the invention relates to a clock escapement mechanism according to
L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel mécanisme d'échappement.The invention also relates to a watch movement comprising at least one such escape mechanism.
L'invention concerne encore une montre comportant au moins un tel mécanisme d'échappement.The invention also relates to a watch comprising at least one such escape mechanism.
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, en référence aux dessins annexés, où :
- la
figure 1 représente, de façon schématisée, pour un mécanisme d'échappement de type magnétique, un diagramme illustrant la variation de l'énergie potentielle en ordonnée, en fonction de l'angle au centre en abscisse; - la
figure 2 représente, de façon schématisée, une simulation de l'évolution des rebonds de la roue d'échappement, avec l'angle de rotation de la roue en ordonnée, en fonction du temps en abscisse ; - la
figure 3 représente, de façon schématisée, selon une échelle de puissance en ordonnée en fonction du couple d'entraînement en abscisse, les canaux de pertes d'un échappement à ancre magnétique, la zone triangulaire illustrant la quantité absolue d'énergie perdue par les rebonds de la roue magnétique, et montrant qu'aux faibles valeurs de couple correspondant au désarmage du barillet le fonctionnement est tout juste assuré, tandis qu'aux fortes valeurs de couple fourni par le barillet ou l'accumulateur correspond un excès d'énergie disponible qui tend à être dissipé par le phénomène de rebond ; - la
figure 4 représente, de façon similaire à lafigure 3 , les pertes relatives, avec en ordonnée le ratio des pertes par rapport à la puissance totale, en fonction du couple d'entraînement en abscisse, la zone triangulaire supérieure illustrant la quantité relative d'énergie perdue par les rebonds de la roue magnétique ; - la
figure 5 représente, de façon similaire à lafigure 1 , la combinaison propre à l'invention entre le même échappement magnétique et un dispositif anti-retour, schématisé non limitativement par un cliquet ; - la
figure 6 représente, de façon schématisée, et en vue en plan, un échappement magnétique à arrêtoir comportant deux bras chacun portant une masse polaire agencée pour coopérer alternativement avec une piste de la roue d'échappement, laquelle est couplée à un dispositif anti-retour sous forme d'un cliquet ici non limitativement représenté sous forme d'un cliquet unique ; - la
figure 7 est une variante du mécanisme de lafigure 6 , où le cliquet ne coopère avec un secteur denté que dans certaines zones angulaires où la fonction d'anti-retour n'est pas nécessaire, de façon à minimiser les pertes lors de l'armage du dispositif anti-retour, notamment par frottement du cliquet dans ce cas de figure ; - la
figure 8 illustre une configuration de travail particulière du mécanisme de lafigure 7 , où le cliquet fonctionne en traction quand la roue d'échappement tend à pivoter à l'inverse de son sens normal de fonctionnement ; - la
figure 9 illustre, en vue en plan, une roue d'échappement simplifiée avec des rampes alternées dépourvues de barrière, et séparées en alternance par des zones de potentiel de champ nul ; - la
figure 10 illustre, en vue en plan, une roue d'échappement comportant deux pistes concentriques, avec des rampes alternées prolongées par des barrières de potentiel, et un arrêtoir de type ancre, à masse polaire unique, monté pivotant pour coopérer de façon alternée avec ces deux pistes ; - la
figure 11 est un schéma-blocs représentant une montre comportant un mouvement équipé d'un mécanisme d'échappement selon l'invention.
- the
figure 1 schematically represents, for a magnetic type escapement mechanism, a diagram illustrating the variation of the potential energy on the ordinate, as a function of the center angle on the abscissa; - the
figure 2 represents, schematically, a simulation of the evolution of the rebounds of the escape wheel, with the rotation angle of the wheel in ordinate, as a function of time on the abscissa; - the
figure 3 schematically represents, according to a power scale in ordinate as a function of the driving torque on the abscissa, the loss channels of a magnetic anchor escapement, the triangular zone illustrating the absolute quantity of energy lost by the rebounds of the magnetic wheel, and showing that the low torque values corresponding to the disarming of the barrel operation is just assured, while the high torque values provided by the barrel or the accumulator is an excess of available energy that tends to be dissipated by the phenomenon of rebound; - the
figure 4 represents, similarly to thefigure 3 relative losses, with ordinates the ratio of the losses with respect to the total power, as a function of the driving torque on the abscissa, the upper triangular zone illustrating the relative amount of energy lost by the rebounds of the magnetic wheel; - the
figure 5 represents, similarly to thefigure 1 the combination according to the invention between the same magnetic escapement and a non-return device, schematized nonlimitingly by a pawl; - the
figure 6 schematically shows, in plan view, a magnetic arrestor escapement comprising two arms each carrying a pole mass arranged to cooperate alternately with a track of the escape wheel, which is coupled to a non-return device in the form of a ratchet here not limited to the form of a single ratchet; - the
figure 7 is a variant of the mechanism of thefigure 6 , where the pawl cooperates with a toothed sector only in certain angular areas where the anti-return function is not necessary, so as to minimize the losses during the arming of the non-return device, in particular by friction of the ratchet in this case; - the
figure 8 illustrates a particular working configuration of the mechanism of thefigure 7 , where the pawl operates in traction when the escape wheel tends to pivot contrary to its normal direction of operation; - the
figure 9 illustrates, in plan view, a simplified escape wheel with alternate ramps without barrier, and alternately separated by areas of zero field potential; - the
figure 10 illustrates, in plan view, an escape wheel comprising two concentric tracks, with alternating ramps extended by potential barriers, and an anchor type stopper, with a single polar mass, pivotally mounted to cooperate alternately with these two tracks ; - the
figure 11 is a block diagram showing a watch comprising a movement equipped with an exhaust mechanism according to the invention.
L'invention propose une solution simple et fiable pour maîtriser les rebonds d'un dispositif d'échappement magnétique ou électrostatique, par ajout d'un dispositif anti-retour, lequel permet d'augmenter le rendement de ce type d'échappement, en particulier lorsque le couple fourni par le barillet ou l'accumulateur est élevé. Ce mécanisme anti-retour permet d'accumuler l'énergie du barillet ou similaire, pour la restituer dans le résonateur.The invention proposes a simple and reliable solution for controlling the rebounds of a magnetic or electrostatic exhaust device, by adding a non-return device, which makes it possible to increase the efficiency of this type exhaust, especially when the torque provided by the barrel or the accumulator is high. This non-return mechanism makes it possible to accumulate the energy of the barrel or similar, to restore it in the resonator.
L'invention concerne un mécanisme d'échappement 200 d'horlogerie comportant au moins un résonateur 100. Le mécanisme d'échappement 200 comporte au moins un mobile d'échappement. Ce mobile est décrit et illustré ici dans le cas particulier et non limitatif d'une roue d'échappement 1, mais il peut prendre d'autres formes, telle qu'un cylindre, ou autre. Dans cette variante non limitative, le mécanisme d'échappement 200 comporte au moins une roue d'échappement 1, laquelle est agencée pour coopérer avec un tel mécanisme résonateur 100, ou bien directement, ou bien indirectement au travers d'un arrêtoir 2 que comporte ce mécanisme d'échappement 200.The invention relates to a
L'invention est illustrée, de façon non limitative, avec un échappement à arrêtoir, cet arrêtoir 2 étant constitué dans un exemple particulier, là encore non limitatif, par une ancre pivotante comportant, selon le cas une masse polaire 3 unique agencée pour coopérer alternativement avec des pistes de la roue d'échappement comportant des champs magnétiques ou électrostatiques d'intensité variable, ou bien deux masses polaires 3 agencées pour coopérer alternativement avec au moins une piste 4 de la roue d'échappement 1 comportant des champs magnétiques ou électrostatiques d'intensité variable.The invention is illustrated, in a nonlimiting manner, with a stopper escapement, this
L'invention s'applique aussi pour d'autres types de mécanismes d'échappement, à cylindre, naturel, ou autre, dans le cas de la coopération directe sans arrêtoir.The invention also applies to other types of exhaust mechanisms, cylinder, natural, or other, in the case of direct cooperation without stop.
La roue d'échappement 1 comportant une succession de pistes 4, ou encore, selon les variantes décrites ci-dessous 40, 41, 42. Ces pistes 4 sont porteuses de rampes 6 de potentiel croissant de champ magnétique ou électrostatique. Ces rampes 6 sont agencées pour coopérer avec le résonateur 100, ou respectivement avec l'arrêtoir 2.The
Selon l'invention, ce mécanisme d'échappement 200 comporte au moins un dispositif anti-retour 5, qui est agencé pour s'opposer au retour de la roue d'échappement 1, c'est-à-dire pour l'empêcher de reculer par rapport à son sens normal de pivotement.According to the invention, this
Plus particulièrement, le mécanisme d'échappement 200 comporte un arrêtoir 2 coopérant, d'une part avec un plateau que comporte le mécanisme résonateur 100, notamment un plateau de balancier dans le cas d'un résonateur à balancier-spiral, et coopérant d'autre part avec des rampes 6 de potentiel de champ magnétique ou électrostatique, par au moins une masse polaire 3, ou encore, selon les variantes décrites ci-dessous 30, 31, 32, que comporte cet arrêtoir 2. Cette masse polaire 3 est agencée pour évoluer dans le champ correspondant à ces rampes 6 de potentiel de champ magnétique ou électrostatique.More particularly, the
La
Cette
L'invention est décrite et illustrée ici dans l'alternative magnétique, avec dispositif anti-retour sur la roue d'échappement ; l'homme du métier saura réaliser les alternatives électrostatique et mixte en référence aux demandes de brevet cités plus haut, du même déposant.The invention is described and illustrated here in the magnetic alternative, with anti-return device on the escape wheel; the person skilled in the art will know how to carry out the electrostatic and mixed alternatives with reference to the patent applications mentioned above, from the same applicant.
La dissipation d'énergie lors des rebonds se fait classiquement par frottements, au moins partiellement visqueux, en particulier au niveau des pivots, et par pertes aérodynamiques, tel que visible sur la
Un avantage important des mécanismes d'échappement à champ magnétique ou électrostatique est que le point de basculement est fixe, parfaitement reproductible, et l'énergie transmise est constante. Dans une telle configuration, l'ancre bascule toujours à la même position, au pied de la barrière magnétique quand elle existe (ce qui n'est pas toujours le cas, on peut aussi avoir la combinaison d'une simple rampe et d'une butée mécanique pour jouer le rôle de la barrière de potentiel). L'arrêtoir ou ancre transmet donc toujours la même quantité d'énergie au balancier, ce qui en fait un système à force constante, l'excédent étant dissipé par des rebonds.An important advantage of the magnetic field or electrostatic exhaust mechanisms is that the tipping point is fixed, perfectly reproducible, and the transmitted energy is constant. In such a configuration, the anchor always switches to the same position, at the foot of the magnetic barrier when it exists (which is not always the case, one can also have the combination of a simple ramp and a mechanical stop to play the role of the potential barrier). The stopper or anchor therefore always transmits the same amount of energy to the balance, which makes it a system with constant force, the surplus being dissipated by rebounds.
Le barillet ne fournissant pas toujours le même couple, cet excédent d'énergie dissipé par rebonds n'est pas constant, comme on peut le voir sur la
- puissance utile reçue par le résonateur PU;
- pertes ancre (chocs) PAC ;
- pertes dans les rebonds de la roue (secteur triangulaire) PRDR ; ces pertes peuvent être importantes quand le barillet est complètement armé ; le système est dimensionné pour fonctionner tout juste à couple faible, en fin de désarmage du barillet ;
- pertes rotation roue et rouage PRER,
- la droite oblique supérieure représentant le cumul, c'est-à-dire la puissance totale fournie par le barillet PTFB.
- useful power received by the PU resonator;
- anchor losses (shocks) PAC;
- losses in the rebounds of the wheel (triangular sector) PRDR; these losses can be significant when the barrel is fully armed; the system is sized to operate just at low torque, at the end of disarming the barrel;
- wheel and gear rotation losses PRER,
- the upper oblique line representing the cumulative, that is to say the total power provided by the PTFB cylinder.
La zone triangulaire représente la quantité absolue d'énergie perdue par les rebonds de la roue magnétique.The triangular zone represents the absolute amount of energy lost by the rebounds of the magnetic wheel.
La
L'invention s'astreint à minimiser le plus possible ces rebonds en ajoutant un dispositif anti-retour, tel qu'un cliquet ou similaire, agissant sur la roue d'échappement.The invention is compelled to minimize as much as possible these rebounds by adding a non-return device, such as a ratchet or the like, acting on the escape wheel.
Il s'agit, à la fois, de limiter les rebonds au minimum, et surtout d'augmenter le rendement du mécanisme d'échappement, et par conséquent, la réserve de marche du mouvement d'horlogerie.This is both to limit rebounds to a minimum, and especially to increase the efficiency of the exhaust mechanism, and therefore the power reserve of the watch movement.
Le principe est illustré sur la
L'échappement peut donc transférer davantage d'énergie au balancier-spiral. Le rendement est amélioré. Le système perd sa caractéristique de force constante et devient un échappement à force variable avec le couple, comme un échappement à ancre suisse traditionnel.The exhaust can therefore transfer more energy to the sprung balance. The yield is improved. The system loses its constant force characteristic and becomes a variable force exhaust with the torque, like a traditional Swiss anchor escapement.
Diverses configurations de répartition des champs sur la ou les pistes 4 de la roue d'échappement 1 sont utilisables.Various configurations of distribution of the fields on the track or tracks 4 of the
Dans un premier mode de réalisation illustré par la
Dans un deuxième mode de réalisation, l'arrêtoir 2 comporte deux masses polaires 3, qui sont une première masse polaire 31 et une deuxième masse polaire 32, agencées pour coopérer successivement et alternativement avec une piste 4 qui est une piste unique 40.In a second embodiment, the
Et la roue d'échappement 1 comporte, agencées de façon périodique selon un pas P, une pluralité de zones utiles ZU, chacune située entre, d'une part une zone de minimum de potentiel d'une telle piste 4, 40, 41, 42, donnée, et d'autre part une zone de maximum de potentiel d'une telle piste 4, 40, 41, 42, laquelle zone de maximum de potentiel suit immédiatement la zone de minimum de potentiel considérée de cette piste donnée.And the
Et chaque franchissement d'une telle zone de maximum de potentiel d'une piste 4, 40, 41, 42, par une masse polaire 3, 30, 31, 32, correspond à un basculement de l'arrêtoir 2And each crossing of such a zone of maximum potential of a
Dans la configuration particulière comportant à la fois des rampes 6 et des barrières 7 de potentiel, les rampes 6 de potentiel de champ magnétique ou électrostatique disposées sur ces pistes 4 , 40, 41, 42, comportent chacune une barrière 7 de potentiel à leur extrémité de potentiel de champ maximal, tendant à s'opposer à son franchissement par une masse polaire 3 de l'arrêtoir 2.In the particular configuration comprising both
Plus particulièrement, sur une telle piste 4 , 40, 41, 42, chaque rampe 6 est prolongée par une barrière 7 de champ magnétique ou électrostatique, cette barrière 7 comportant immédiatement à la suite de la rampe 6, au niveau du point particulier PP, une première zone 71 de croissance rapide de potentiel dont le gradient est supérieur au gradient maximal de la rampe 6 concernée. Cette première zone 71 est suivie par une deuxième zone 72 de maximum de potentiel où la concavité de la courbe de potentiel est inversée par rapport à la première zone 71. La deuxième zone 72 est immédiatement suivie d'une troisième zone 73 de décroissance de potentiel où la concavité de la courbe de potentiel est inversée par rapport à la deuxième zone 72, et cette troisième zone 73 s'achève par une quatrième zone 74 de minimum de potentiel.More particularly, on such a
Dans la configuration particulière de la
Dans une configuration enchaînée comme sur la
Plus particulièrement, sur la roue d'échappement 1 dans son entier, chaque première zone 71 fait immédiatement suite à la quatrième zone 74 précédente.More particularly, on the
Dans une configuration morcelée comme sur la
Plus particulièrement, sur la roue d'échappement 1 dans son entier, chaque première zone 71 est séparée de la quatrième zone 74 précédente par une cinquième zone 75 de potentiel constant ou nul.More particularly, on the
Dans des variantes particulières, comme notamment sur la
Dans les variantes avec arrêtoir 2, le dispositif anti-retour 5 peut comporter, non limitativement : un cliquet de compression 51, un cliquet de traction 52, un cliquet de compression intérieur 53, ou encore un cliquet de traction intérieur, ou des combinaisons de ces différents cliquets, ou tout autre mécanisme tendant à s'opposer au recul de la roue d'échappement 1.In the variants with
La
De préférence, cette au moins une denture 10 est une denture à dents de loup, autorisant l'avance de la roue d'échappement 1 par glissement sur le cliquet de compression 51 et s'opposant au recul de la roue d'échappement 1 en soumettant cet au moins un cliquet de compression 51 à un effort de flambage quand la roue d'échappement 1 tend à reculer.Preferably, this at least one
Sur la
Dans une autre variante, on embarque le cliquet sur la roue d'échappement et on agençant la denture sur une roue fixe. Le dispositif anti-retour 5 comporte alors au moins un cliquet de compression intérieur 53 comportant une troisième liaison élastique avec la roue d'échappement 1 et coopérant avec au moins une denture 10 que comporte un anneau denté intérieurement fixé sur une partie fixe du mécanisme d'échappement 200 extérieure à l'arrêtoir 2 et à la roue d'échappement 1.In another variant, the ratchet is loaded onto the escape wheel and the teeth are arranged on a fixed wheel. The
Concernant la denture 10, divers aménagements sont imaginables.Regarding the
La variante de la
Pour assurer le fonctionnement minimal, il faut que la au moins une denture 10 comporte au moins une dent 13 sur chaque zone utile ZU. Ceci permet de réduire le coût de découpe ou de taillage des dents. Par exemple, la
Dans une version plus classique, cette au moins une denture 10 comporte, sur les zones munies de dents qu'elle comporte, au moins vingt fois plus de dents que la roue d'échappement 1 ne comporte de pas P (dits aussi équivalents-dents), chaque pas P correspondant à la course entre deux basculements successifs de l'arrêtoir 2. Bien sûr, des pertes par frottement existent, elles sont néanmoins constantes, et n'altèrent pas les performances chronométriques.In a more conventional version, this at least one
La
L'armage des dents du cliquet consomme un peu d'énergie et altère le rendement de l'échappement. Il est possible de minimiser ce problème en ne plaçant des dents que dans les régions fonctionnelles, tel qu'illustré sur la
La
Les
Une deuxième variante, en
De nombreux autres dispositifs anti-retour peuvent être envisagés, comme par exemple le système utilisé dans les inverseurs automatiques dans les mouvements automatiques à remontage par masse oscillante, tel que décrit sur : http://www.horlogerie-suisse.com/technique/les-complications/les-inverseurs-automatiquesMany other non-return devices can be envisaged, such as for example the system used in automatic reversers in automatic movements with oscillating weight winding, as described on: http://www.horlogerie-suisse.com/technique/ the-complications / the reversing-automatic
On peut encore utiliser, en combinaison, une lame dure sur une roue molle, en caoutchouc ou similaire.It is still possible to use, in combination, a hard blade on a soft wheel, rubber or the like.
Dans une autre variante, ce dispositif anti-retour 5 comporte au moins un dispositif de roue libre, ou un mécanisme à faible hystérèse de roulement de type « OneWay » de la société « MPS » :
- http://www.mps-watch.com/fr/bearing-technologies/produits.html#c581.
- http://www.mps-watch.com/fr/bearing-technologies/produits.html#c581.
La présence d'un dispositif anti-retour offre un autre avantage qui se cumule aux avantages liés au fonctionnement : le potentiel magnétique peut être moins élevé, ce qui simplifie la fabrication des aimants, et abaisse les coûts.The presence of a non-return device offers another advantage that combines with the advantages of operation: the magnetic potential may be lower, which simplifies the manufacture of magnets, and lowers costs.
Une autre combinaison consiste à utiliser le potentiel original, mais avec un barillet dimensionné au plus juste, donc beaucoup moins encombrant, ce qui est toujours recherché en horlogerie, en particulier dans les cas de montres dames ou de montres à complications.Another combination is to use the original potential, but with a cylinder dimensioned to the fair, so much less bulky, which is still sought after in watchmaking, especially in the case of ladies' watches or watches with complications.
Bien sûr, on peut choisir, toutes autres choses égales par ailleurs, de tout simplement augmenter la réserve de marche du mouvement.Of course, one can choose, all other things being equal, to simply increase the power reserve of the movement.
La
On comprend que l'utilisation d'un dispositif anti-retour ne permet pas de s'affranchir des butées mécaniques anti-choc mentionnées dans le document
La réalisation de mécanismes d'échappement selon l'invention est possible aussi bien avec des technologies traditionnelles, notamment fraisage ou étampage, ou encore l'usinage laser permettant d'obtenir une résolution plus élevée, appréciable pour l'usinage de la denture 10.The production of exhaust mechanisms according to the invention is possible both with traditional technologies, including milling or stamping, or laser machining to obtain a higher resolution, appreciable for the machining of the
On peut, encore, minimiser la puissance nécessaire pour faire fonctionner le dispositif d'anti-retour, en utilisant les technologies de fabrication modernes, telles que la gravure profonde du silicium ou le LIGA. En particulier, on cherche à minimiser l'inertie, la constante du ressort, ou encore le coefficient de frottement.One can, further, minimize the power required to operate the anti-return device, using modern manufacturing technologies, such as deep silicon etching or LIGA. In particular, it seeks to minimize the inertia, the spring constant, or the coefficient of friction.
L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel mécanisme d'échappement.The invention also relates to a watch movement comprising at least one such escape mechanism.
L'invention concerne encore une montre comportant au moins un tel mécanisme d'échappementThe invention also relates to a watch comprising at least one such escape mechanism
En somme, le dispositif anti-retour selon l'invention permet, au prix d'un aménagement de faible coût et d'encombrement limité, d'obtenir une forte augmentation du rendement du mécanisme d'échappement, et, en conséquence, de la réserve de marche du mouvement.In sum, the anti-return device according to the invention makes it possible, at the cost of a low-cost and limited space arrangement, to obtain a large increase in the efficiency of the exhaust mechanism, and consequently of the power reserve of the movement.
Claims (23)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15179709.9A EP3128379B1 (en) | 2015-08-04 | 2015-08-04 | Escapement with escape wheel with field rramps and a non-return device |
US15/222,517 US10054908B2 (en) | 2015-08-04 | 2016-07-28 | Escapement with escape wheel with field ramps and non-return |
JP2016152553A JP6290991B2 (en) | 2015-08-04 | 2016-08-03 | Escapement machine with escapement vehicle with field raising part and detent part |
CN201610630224.XA CN106444336B (en) | 2015-08-04 | 2016-08-03 | Escapement including escape wheel and check device with field slope |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP15179709.9A EP3128379B1 (en) | 2015-08-04 | 2015-08-04 | Escapement with escape wheel with field rramps and a non-return device |
Publications (2)
Publication Number | Publication Date |
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EP3128379A1 true EP3128379A1 (en) | 2017-02-08 |
EP3128379B1 EP3128379B1 (en) | 2019-10-02 |
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EP15179709.9A Active EP3128379B1 (en) | 2015-08-04 | 2015-08-04 | Escapement with escape wheel with field rramps and a non-return device |
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Country | Link |
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US (1) | US10054908B2 (en) |
EP (1) | EP3128379B1 (en) |
JP (1) | JP6290991B2 (en) |
CN (1) | CN106444336B (en) |
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EP3767397A1 (en) | 2019-07-19 | 2021-01-20 | The Swatch Group Research and Development Ltd | Clock movement comprising a rotary element provided with a magnetic structure having a periodic configuration |
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EP3316046B1 (en) * | 2016-10-25 | 2019-07-31 | The Swatch Group Research and Development Ltd | Optimised clock movement |
JP6901877B2 (en) * | 2017-03-13 | 2021-07-14 | セイコーインスツル株式会社 | Escapement, watch movements and watches |
EP3663868B1 (en) * | 2018-12-07 | 2021-09-08 | Montres Breguet S.A. | Clock movement including a tourbillon with a fixed magnetic wheel |
EP3971655A1 (en) * | 2020-09-18 | 2022-03-23 | ETA SA Manufacture Horlogère Suisse | Shock-proof protection with abutment for a resonator mechanism with rotatable flexible guiding |
CN112433458B (en) * | 2020-11-23 | 2021-09-03 | 深圳市精准时计科技有限公司 | Timepiece movement provided with a positioning device |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3757682A1 (en) | 2019-06-26 | 2020-12-30 | The Swatch Group Research and Development Ltd | Timepiece movement comprising a magnetic escapement |
EP3767397A1 (en) | 2019-07-19 | 2021-01-20 | The Swatch Group Research and Development Ltd | Clock movement comprising a rotary element provided with a magnetic structure having a periodic configuration |
Also Published As
Publication number | Publication date |
---|---|
CN106444336B (en) | 2019-03-29 |
JP2017032564A (en) | 2017-02-09 |
US20170038737A1 (en) | 2017-02-09 |
EP3128379B1 (en) | 2019-10-02 |
JP6290991B2 (en) | 2018-03-07 |
US10054908B2 (en) | 2018-08-21 |
CN106444336A (en) | 2017-02-22 |
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