EP3191896B1 - Résonateur combiné à isochronisme amélioré - Google Patents

Résonateur combiné à isochronisme amélioré Download PDF

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Publication number
EP3191896B1
EP3191896B1 EP15734670.1A EP15734670A EP3191896B1 EP 3191896 B1 EP3191896 B1 EP 3191896B1 EP 15734670 A EP15734670 A EP 15734670A EP 3191896 B1 EP3191896 B1 EP 3191896B1
Authority
EP
European Patent Office
Prior art keywords
groove
timepiece assembly
sliding
timepiece
pin
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.)
Active
Application number
EP15734670.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3191896A1 (fr
Inventor
Marc Stranczl
Jean-Jacques Born
Jérôme Favre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Swatch Group Research and Development SA
Original Assignee
Swatch Group Research and Development SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CH01361/14A external-priority patent/CH709535B1/fr
Priority claimed from EP14184631.1A external-priority patent/EP2908190B1/fr
Application filed by Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Publication of EP3191896A1 publication Critical patent/EP3191896A1/fr
Application granted granted Critical
Publication of EP3191896B1 publication Critical patent/EP3191896B1/fr
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Classifications

    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • 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
    • G04B15/02—Escapements permanently in contact with the regulating mechanism
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/045—Oscillators acting by spring tension with oscillating blade springs
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • G04B17/063—Balance construction
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/10—Oscillators with torsion strips or springs acting in the same manner as torsion strips, e.g. weight oscillating in a horizontal plane
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/26—Compensation of mechanisms for stabilising frequency for the effect of variations of the impulses
    • 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
    • G04C3/08—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
    • 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

Definitions

  • the invention relates to a horological assembly comprising a resonator combined with at least two degrees of freedom which comprises a first oscillator, flexible guide with flexible blades, spring, linear or rotary reduced amplitude oscillating substantially in a first direction with respect to which oscillates a second oscillator, flexible guide with flexible blades, spring, linear or rotary reduced amplitude oscillating substantially in a second direction substantially orthogonal to said first direction, said second oscillator comprising a second bearing mass of a slider, said watch assembly comprising a mobile arranged for applying a torque to said resonator, said mobile having a groove in which said slider slides with minimal clearance.
  • the invention also relates to a watch movement comprising such a watch assembly.
  • the invention also relates to a watch equipped with such a movement.
  • the invention relates to the field of watch mechanisms, and more specifically, mechanical resonators.
  • Article YANGMIN LI AND AL "A Compiler Parallel XY Micromotion Stage With Complete Kinematic Decoupling", IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING, IEEE, NEW YORK, NY, US, vol. 9, no. 3, July 1, 2012, pages 538-553, ISSN: 1545-5955, DOI: 10.1109 / TASE.2012.2198466 discloses a combined resonator having two flexible guide resonators in series with each other.
  • a combined resonator comprising two flexible guide resonators placed in series with each other, and a mass of which carries a pin which cooperates with a groove of a mobile subjected to a torque.
  • the document EP2570870A1 on behalf of The SWATCH GROUP RESEARCH & DEVELOPMENT Ltd. describes a timepiece comprising a first oscillator oscillating at a first frequency and connected to a power source by a first gear.
  • a second oscillator oscillating at a second frequency is connected to a second wheel connected to the first wheel by elastic coupling means for synchronizing the operation of the two oscillators using the same energy source.
  • the invention proposes to improve the isochronism of such a combined resonator, in particular by controlling the friction between on the one hand the slide or the pin, and on the other hand the groove.
  • the invention relates to a watch assembly comprising a resonator combined with at least two degrees of freedom which comprises a first oscillator, flexible guide with flexible blades spring, linear or rotary reduced amplitude oscillating substantially in a first direction by a ratio oscillating with a second oscillator, flexible guide with flexible blades spring, linear or rotary reduced amplitude oscillating substantially in a second direction substantially orthogonal to said first direction, said second oscillator comprising a second mass carrying a slider, said set watchmaker comprising a mobile arranged for the application of a torque to said resonator, said mobile having a groove in which said slider slides with minimum clearance, according to claim 1.
  • the invention also relates to a watch movement comprising such a watch assembly.
  • the invention also relates to a watch equipped with such a movement.
  • a resonator combined with at least two degrees of freedom from the series connection of two resonators O1 and O2 with flexible guide each having a mass M1, M2, M1 of the first resonator O1 being suspended by first flexible blades L1 to a fixed structure P such that a plate.
  • the first resonator O1 oscillates essentially in a first linear direction Y.
  • the first mobile mass M1 of this first resonator O1 serves as anchoring to the second flexible blades L2 of a second resonator O2, which oscillates essentially in a second linear direction X, substantially perpendicular to the first linear direction Y.
  • the second mass mobile M2 of the second resonator O2 comprises a slider (constituted by a single pin 2 in the particular case of the figure 1 ), which cooperates with a groove 1 that carries a mobile 3 subjected to a torque, typically an escape wheel.
  • the invention is applicable to rotary oscillators with little amplitude, in particular an angular amplitude of less than 12 °, or to linear oscillators. It is more particularly described in the variant of linear oscillators.
  • the restoring forces are not exactly proportional to the displacements, because the flexible guides L1, L2, used in such a combined resonator are very short, which causes a non-linearity of the force of the spring as a function of the displacement, which introduces a defect of isochronism.
  • the nature of the guide between the slider and the groove 1 thus directly influences the isochronism of such a combined resonator used for a watch application.
  • the invention therefore proposes to control this relative guidance, direct or indirect, between the slider (or the pin 2) and the groove 1, by acting on the shape of the groove 1 and / or on the nature of the guide.
  • the invention relates to a watch assembly 10 comprising such a resonator combined with at least two degrees of freedom which comprises a first oscillator linear or rotary O1 reduced amplitude oscillating substantially in a first direction Y relative to which oscillates a second oscillator O2 linear or rotary reduced amplitude oscillating substantially in a second direction X substantially orthogonal to the first direction Y.
  • the second oscillator O2 comprises a second mass M2 bearing a slider.
  • the watch assembly 10 comprises a mobile 3 arranged for the application of a torque to the resonator, the mobile 3 having a groove 1 in which the slider slides with minimal clearance.
  • this slider is arranged to at least, or follow the curvature of the groove 1 when it has one, or rub friction in the groove 1, or push the inner side surfaces 11, 12, that comprises the groove 1, by magnetized or electrified surfaces that includes the slide.
  • the slider is the most general case, and may be a mechanical sub-assembly with several components, in which some components may have degrees of freedom, especially in pivoting relative to each other.
  • the case where the slide is reduced to a pin is a special case.
  • the groove 1 which serves as a guide for the slide, in this case reduced to a pin 2 carried by the second mass M2 of the second oscillator O2, is specifically arranged.
  • this groove 1 is given a shape creating a radial force, which corrects the variation of the spring constant of the blades of the flexible guide. This force can be directed towards the center or outward, depending on the shape of the groove.
  • the groove 1 comprises at least one curved portion.
  • the groove 1 is substantially radial with respect to the pivot axis D of the mobile 3.
  • the groove 1 comprises at least one concave zone with respect to a radial resulting from the pivot axis D of the mobile 3.
  • a first embodiment is a fully curved groove, as visible on the figure 2 .
  • the concavity of this groove 1 decreases progressively from the axis of rotation of the mobile carrier of this groove.
  • a second execution is a groove 1 having a first inner portion radial with respect to the axis of rotation D of the mobile 3 carrying the groove 1, which is tangential to a second curve portion of constant concavity or decreasing away from this axis of rotation D to compensate for isochronism defects.
  • the groove 1 is straight but not radial.
  • the inner side surfaces 11 and 12 are parallel to each other.
  • the groove 1 is equipped with a slider comprising a skid rubbing 4 sliding friction in this groove 1.
  • this rubbing pad is prismatic profile complementary to that of the groove 1, and slides in this groove.
  • the friction between the friction pad 4 and the groove 1 serves to attenuate the elliptical movement of the slide to tend towards a circular motion.
  • This rubbing pad 4 makes it possible to favor a phase shift of 90 ° between the two oscillators O1 and O2, and thus to prevent the trajectory collapse on a line.
  • the inner side surfaces 11, 12 of the groove 1 are magnetized or electrified and are arranged to repel magnetized or electrified surfaces that includes the slide.
  • the slider is then a repulsive slider, in particular and not in the form of a radially magnetized ring 21, or, in a particular variant illustrated in FIG. figure 5 , has a shaft portion 20 which carries such a magnetic ring 21. More particularly, the ring 21 is arranged to be mounted on a shaft portion 20 of a pin 2 carried by the second mass M2, or to constitute such a pin 2.
  • the groove 1 is also magnetized so as to always be in repulsion with this repellent slider.
  • the groove 1 can either be magnetized over its entire structure or have individual magnets in sufficient number, and whose magnetization is oriented in a direction perpendicular to the local tangent to the inner surface of the groove 1.
  • the groove 1 and the repellent slider thus together form a crank-link system without friction, the major advantages of which are the increase in yield as well as the reduction in wear.
  • the auto-start of the oscillation of the combined resonator is also improved.
  • the magnets can be replaced by electrets.
  • the magnetized zone, respectively electrified, of the groove 1 and / or the repellent slider, in particular in the form of a ring 21, can result from a treatment of a surface layer of the material, respectively ferromagnetic or electrostatically conductive, constituting this groove 1 and / or this repulsive slider.
  • the repulsive slider is preferably slidably movable in the groove 1 of the moving part 3, and away from the inner side surfaces 11, 12 of this groove 1, under the effect of magnetic and / or electrostatic repulsion fields. .
  • the periphery 22 of the repellent slider is thus always at a distance from these lateral surfaces 11, 12, which, in a preferred application, are parallel.
  • a fourth embodiment as visible on the figure 6 the first and second embodiments are combined with a groove 1 comprising at least one curvature in which a friction pad 4 slides.
  • this rubbing pad 4 has contact surfaces with the inner lateral surfaces 11, 12, of the groove 1 which are very small, in particular each in the form of one or more bosses 41, 42 , semi-cylindrical, or the like. At least a first boss 41 cooperates with a first inner surface 11 of the groove 1 and at least one second boss 42 cooperates with a second inner surface 12 of the groove 1. Preferably at least two first bosses 41 cooperate with a first inner surface 11 of the groove 1 and at least one second boss 42 cooperates with a second inner surface 12 of the groove 1, or vice versa.
  • the illustrated variant comprises two first protrusions 41 spaced apart from one another cooperating with the first inner surface 11, and two second protrusions 42 spaced apart from each other cooperating with the second inner surface 12.
  • the friction pad comprises at least one elastic portion and / or articulated allowing it to follow the local curvature of the groove 1 during its sliding, while maintaining a substantially constant friction.
  • the first and third embodiments are combined with a groove 1 comprising at least one curvature, in which slides a repulsive slide.
  • the invention also relates to such a combined resonator 10 equipped with such a mobile 3 with a groove 1, straight or having at least one curved portion, and / or having internal surfaces magnetized or electrified, this groove 1 slidably receiving a slider arranged to follow the curvature of the groove when it has one, and / or the slider is either a friction rubbing slider in the groove 1 or is a magnetized or electrified repulsive slider.
  • the invention also relates to a watch movement 100 comprising such a watch assembly 10.
  • the invention also relates to a watch 200 equipped with such a movement 100.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Micromachines (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
EP15734670.1A 2014-09-09 2015-07-07 Résonateur combiné à isochronisme amélioré Active EP3191896B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH01361/14A CH709535B1 (fr) 2014-02-17 2014-09-09 Résonateur rotatif, mouvement équipé d'un tel résonateur et montre équipée d'un tel mouvement.
CH01360/14A CH709534B1 (fr) 2014-02-17 2014-09-09 Mobile d'application d'un couple à un résonateur combiné.
EP14184631.1A EP2908190B1 (fr) 2014-02-17 2014-09-12 Résonateur combiné à frottement minimal
PCT/EP2015/065434 WO2016037726A1 (fr) 2014-09-09 2015-07-07 Résonateur combiné à isochronisme amélioré

Publications (2)

Publication Number Publication Date
EP3191896A1 EP3191896A1 (fr) 2017-07-19
EP3191896B1 true EP3191896B1 (fr) 2019-04-24

Family

ID=53524783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15734670.1A Active EP3191896B1 (fr) 2014-09-09 2015-07-07 Résonateur combiné à isochronisme amélioré

Country Status (6)

Country Link
US (1) US9581969B2 (zh)
EP (1) EP3191896B1 (zh)
JP (1) JP6111380B2 (zh)
CN (1) CN106462104B (zh)
RU (1) RU2679927C2 (zh)
WO (1) WO2016037726A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2908189A3 (fr) * 2014-02-17 2016-06-01 ETA SA Manufacture Horlogère Suisse Mécanisme de synchronisation de deux oscillateurs d'horlogerie avec un rouage
CH712068B1 (fr) * 2016-01-29 2019-11-29 Eta Sa Mft Horlogere Suisse Mécanisme résonateur d'horlogerie à pivot virtuel.
CH713056A2 (fr) * 2016-10-18 2018-04-30 Eta Sa Mft Horlogere Suisse Mouvement mécanique d'horlogerie avec résonateur à deux degrés de liberté avec mécanisme d'entretien par galet roulant sur une piste.
CH713055A2 (fr) * 2016-10-18 2018-04-30 Eta Sa Mft Horlogere Suisse Mouvement d'horlogerie comportant un mécanisme résonateur et un mécanisme d'échappement coopérant en transmission continue.
CH713150A2 (fr) * 2016-11-23 2018-05-31 Eta Sa Mft Horlogere Suisse Mécanisme régulateur à résonateur rotatif à guidage flexible entretenu par un échappement libre à ancre.
CH714093A2 (fr) * 2017-08-29 2019-03-15 Swatch Group Res & Dev Ltd Pivot isochrone pour résonateur d'horlogerie.
EP3561605B1 (fr) * 2018-04-25 2020-10-28 The Swatch Group Research and Development Ltd Mécanisme régulateur d'horlogerie à résonateurs articulés
EP3739394A1 (en) * 2019-05-16 2020-11-18 Ecole Polytechnique Fédérale de Lausanne (EPFL) Crank arrangement for driving a mechanical oscillator
EP3926412A1 (fr) * 2020-06-16 2021-12-22 Montres Breguet S.A. Mécanisme régulateur d'horlogerie

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH113025A (de) * 1924-04-28 1925-12-16 Heinrich Schieferstein Georg Verfahren zur Steuerung eines Drehbewegungen ausführenden Mechanismus.
US3585424A (en) * 1970-01-28 1971-06-15 Jaz Sa Electromechanical oscillator with frequency adjustment means
US3683213A (en) * 1971-03-09 1972-08-08 Statek Corp Microresonator of tuning fork configuration
CH594201B5 (zh) * 1972-12-13 1977-12-30 Ebauches Sa
CH650122GA3 (zh) * 1981-12-17 1985-07-15
DE4108935A1 (de) * 1991-03-19 1992-09-24 Damm Eric Kompensator fuer eine mechanische pendeluhr
DE602008006057D1 (de) * 2008-07-04 2011-05-19 Swatch Group Res & Dev Ltd Gekoppelte Resonatoren für Uhr
HK1146455A2 (en) * 2010-03-12 2011-06-03 Microtechne Res & Dev Ct Ltd An oscillator system
CH703475B1 (fr) * 2010-07-30 2015-06-30 Swatch Group Res & Dev Ltd Procédé de réalisation d'une transmission sans contact dans un mouvement d'horlogerie.
EP2466401B1 (fr) * 2010-12-15 2013-08-14 Asgalium Unitec SA Résonateur magnétique pour pièce d'horlogerie mécanique
EP2466397B1 (fr) * 2010-12-20 2013-08-21 Blancpain S.A. Mobile d'horlogerie à guidage périphérique
EP2570870B1 (fr) 2011-09-15 2016-04-06 The Swatch Group Research and Development Ltd. Pièce d'horlogerie à oscillateurs couplés de manière permanente
RU2551484C2 (ru) * 2013-10-11 2015-05-27 Общество с ограниченной ответственностью "Константин Чайкин" Электрический прибор времени, способ и устройство для получения электроэнергии, приводящей в действие электрический прибор времени

Also Published As

Publication number Publication date
EP3191896A1 (fr) 2017-07-19
CN106462104A (zh) 2017-02-22
JP6111380B2 (ja) 2017-04-05
US20160246258A1 (en) 2016-08-25
RU2017111651A (ru) 2018-10-11
RU2017111651A3 (zh) 2019-01-18
WO2016037726A1 (fr) 2016-03-17
US9581969B2 (en) 2017-02-28
JP2016536579A (ja) 2016-11-24
RU2679927C2 (ru) 2019-02-14
CN106462104B (zh) 2019-02-12

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