EP3561606B1 - Stossdämpfungsschutz eines resonators mit rcc-schwenkfedern - Google Patents

Stossdämpfungsschutz eines resonators mit rcc-schwenkfedern Download PDF

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Publication number
EP3561606B1
EP3561606B1 EP18169741.8A EP18169741A EP3561606B1 EP 3561606 B1 EP3561606 B1 EP 3561606B1 EP 18169741 A EP18169741 A EP 18169741A EP 3561606 B1 EP3561606 B1 EP 3561606B1
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EP
European Patent Office
Prior art keywords
shock
resonator
resonator mechanism
inertia
pivot axis
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EP18169741.8A
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English (en)
French (fr)
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EP3561606A1 (de
Inventor
Jean-Jacques Born
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Swatch Group Research and Development SA
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Swatch Group Research and Development SA
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Priority to EP18169741.8A priority Critical patent/EP3561606B1/de
Priority to JP2019056020A priority patent/JP6706363B2/ja
Priority to US16/372,768 priority patent/US11454934B2/en
Priority to CN201910334372.0A priority patent/CN110412854B/zh
Publication of EP3561606A1 publication Critical patent/EP3561606A1/de
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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
    • 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
    • G04B17/20—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
    • 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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/02—Shock-damping bearings
    • 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
    • G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
    • G04B43/002—Component shock protection arrangements

Definitions

  • the invention relates to a clockwork resonator mechanism, comprising a structure and at least one inertial element arranged to oscillate in a pivoting movement about a pivoting axis, with the center of inertia of this at least one inertial element aligned on the pivot axis, this at least one inertial element being subjected to restoring forces exerted by at least one flexible pivot RCC comprising a plurality of elastic resonator blades each fixed, directly or indirectly, at a first end to the structure and fixed, directly or indirectly, at a second end to said at least one inertial element, each elastic resonator blade extending in a plane perpendicular to the axis of pivoting, and being deformable essentially in the plane perpendicular to the axis of pivoting, where the elastic resonator blades are straight and extend in planes parallel to each other or coincident, and where the crossing, in projection on a plane perpendicular to the pivot axis, of the directions in
  • the invention also relates to an oscillator comprising at least one such resonator mechanism and an escapement mechanism.
  • the invention also relates to a timepiece movement comprising at least one such oscillator and/or at least one such resonator mechanism.
  • the invention also relates to a watch comprising such a clock movement, and/or at least one such oscillator and/or at least one such resonator mechanism.
  • the invention relates to the field of clockwork resonators, and more particularly those which comprise elastic resonator blades acting as return means for the operation of the oscillator.
  • Shock resistance is a delicate point for most clock oscillators, and in particular for resonators with crossed blades. In fact, during out-of-plane shocks, the stress undergone by the blades quickly reaches very high values, which correspondingly reduces the travel that the part can travel before yielding.
  • Shock absorbers for timepieces come in many variants. However, their main purpose is to protect the fragile pivots of the axle, and not the elastic elements, such as conventionally the spiral spring.
  • the document EP3054357A1 in the name of ETA Manufacture Horlogère Suisse SA describes a horological oscillator comprising a structure and separate primary resonators, temporally and geometrically out of phase, each comprising a mass returned to the structure by an elastic return means.
  • This oscillator comprises coupling means for the interaction of the primary resonators, comprising motor means for driving a mobile in motion which comprises drive and guide means arranged to drive and guide a control means articulated with transmission means , each articulated, at a distance from the control means, with a mass of a primary resonator.
  • the primary resonators and the mobile are arranged in such a way that the axes of the articulations of any two of the primary resonators and the axis of articulation of the control means are never coplanar.
  • the document EP3035127A1 on behalf of SWATCH GROUP RESEARCH & DEVELOPMENT Ltd describes a clockwork oscillator comprising a resonator consisting of a tuning fork which comprises at least two oscillating mobile parts, fixed to a connecting element by flexible elements whose geometry determines a virtual pivot axis of determined position relative to a plate, and around which the respective mobile part oscillates, the center of mass of which coincides in the rest position with the respective virtual pivot axis.
  • the flexible elements consist of elastic blades crossed at a distance from each other in two parallel planes, the projections of the directions of which on one of the parallel planes intersect at the level of the pivot axis. virtual of the mobile part.
  • the document CH711573A2 in the name of PATEK PHILIPPE describes a watch movement comprising a frame and a mechanism mounted in or on the frame, the mechanism comprising a flexible guide system comprising a fixing part and a movable part connected by elastic guide parts.
  • the flexible guide system is located at least partly in an opening of an element of the frame and is fixed by the fixing part to the side wall of this opening.
  • the document EP3021174A1 in the name of LVMH describes a monolithic timepiece regulator made from a single plate, comprising an external rigid element, an internal rigid element, and elastic suspensions connecting the external rigid element to the internal rigid element and allowing oscillatory rotational movements between them.
  • the internal rigid element has arms which are rigidly connected to each other, leaving free angular spaces between them, and the elastic suspensions are located in these free angular spaces.
  • the invention proposes to protect the reeds of a reed resonator with flexible pivot RCC (“remote center compliance”) against shocks, and therefore to ensure better performance of the system.
  • the invention relates to a blade resonator mechanism according to claim 1.
  • the invention also relates to an oscillator comprising at least one such resonator mechanism and an escapement mechanism.
  • the invention also relates to a timepiece movement comprising at least one such oscillator and/or at least one such resonator mechanism.
  • the invention also relates to a watch comprising such a clock movement, and/or at least one such oscillator and/or at least one such resonator mechanism.
  • the invention proposes to protect the reeds of a reed resonator with flexible pivot RCC (“remote center compliance”) against shocks, and therefore to ensure better performance of the system.
  • the arrangement of a flexible pivot in a head-to-tail vee has the advantage of juxtaposing four blades, at least one of which can always bend or buckle, and prevent the assembly from breaking.
  • the situation is more delicate for an impact occurring on an RCC pivot, because, if the direction of the impact is parallel to one of the blades, and tends to lengthen this blade which is very rigid, it can break in the event of too much elongation. .
  • the invention therefore proposes to provide a simple solution to this particular case.
  • the invention consists in introducing at least one anti-shock element between the blades of the pivot RCC and the inertial element.
  • the invention relates to a clockwork resonator mechanism 100, comprising a structure 1 and at least one inertial element 2, which is arranged to oscillate in a pivoting movement about a pivot axis D.
  • the center of inertia of this at least one inertial element 2 is aligned with the pivot axis D during the oscillation.
  • This at least one inertial element 2 is subjected to restoring forces exerted by at least one flexible pivot RCC 200 on the figures 1 and 2 , 201 and 301 on the figures 3 and 4 .
  • This flexible pivot 200, 201, 301 comprises a plurality of elastic resonator blades 3. Each of these blades 3 is fixed, directly or indirectly, at a first end to the structure 1, and is fixed, directly or indirectly, to a second end to at least one inertial element 2.
  • Each elastic resonator blade 3 extends in a plane perpendicular to the pivot axis D, and is deformable essentially in the plane perpendicular to the pivot axis D. According to the invention, the elastic blades of resonator 3 are straight.
  • These elastic resonator blades 3 extend in planes parallel to each other or coincident, and where the crossing, in projection on a plane perpendicular to the pivot axis D, of the directions D1; D2, along which the elastic resonator blades 3 extend, defines the pivot axis D.
  • the resonator mechanism 100 comprises a shockproof element 10, which comprises a rigid element 13, on which are fixed the second ends of the blades 3, and which is integral with at least one flexible shockproof blade 11 arranged to hold in suspension of the inertial element 2.
  • This shockproof element 10 provides shockproof protection for the blades 3 of the flexible pivot 200, 201, 301.
  • the rigid element 13 is at least 100 times stiffer, according to all the degrees of freedom, than the elastic resonator blades 3 of the flexible pivot, and than each shock-resistant flexible blade 11 that comprises the shock-resistant elastic element 10.
  • shockproof flexible blades 11 are possible.
  • At least one flexible shockproof blade 11, and more particularly each flexible shockproof blade 11, is substantially spiral around the pivot axis D.
  • each shock-resistant flexible blade 11 is substantially of revolution around the pivot axis D.
  • the shock-absorbing element 10 comprises a plurality of identical shock-absorbing flexible blades 11, and regularly distributed around the pivot axis D.
  • the shock-absorbing element 10 comprises an elastic inner ring 14, to which is fixed internally each shock-absorbing flexible blade 11 which is fixed externally to the rigid element 13, which is substantially annular, and from which the elastic inner ring 14 is suspended.
  • the elastic inner ring 14 comprises a plurality of internal bearing surfaces 12 for holding by concentric clamping a shaft 22 which the inertial element 2 comprises.
  • the shockproof flexible strips 11 are calculated so that the rotational resonance frequency of the shockproof element 10 according to its first natural mode is greater than 1000 Hz, or even a few thousand Hz.
  • the frequency of oscillation of the inertial element 2 is more particularly between 5 Hz and 100 Hz.
  • this at least one inertial element 2 is subjected to restoring forces exerted by a pair of identical flexible RCC pivots 201, 301, mounted in opposition, and of which all the blades 3 are fixed at their second end to such an anti-shock element. 10 unique and common.
  • the center of mass of the inertial element is equidistant from the pivot axes of the flexible pivots RCC 201, 301 when these axes are separate, or aligned with them when they are coaxial.
  • FIGS. 3 and 4 illustrate a particular non-limiting case, where the flexible pivots RCC 201, 301 of the pair are arranged in parallel planes, on either side of the inertial element 2. More particularly, these flexible pivots RCC 201, 301 of the pair are arranged on either side of two fixed elements of the structure 1, between which the inertial element 2 is movable.
  • the figures 7 and 8 represent, in a similar way respectively to the figures 3 and 4 , a mounting variant with two superposed RCC pivots, also arranged on either side of the plate and the bridge.
  • the shock-absorbing element 10 within the shock-absorbing element 10, at least one flexible shock-absorbing blade 11 is arranged for the holding by elastic clamping of the inertial element 2. More particularly, the shock-absorbing element 10 comprises a plurality of flexible shock-absorbing blades 11, each arranged to hold the inertial element 2 by elastic clamping.
  • the resonator mechanism 100 comprises axial stop means comprising at least one lower axial stop and/or one upper axial stop, the axial stop means being arranged to cooperate in stop bearing with at least one inertial element 2 for the protection of the resonator mechanism 100 against axial shocks in the direction of the pivot axis D.
  • the picture 3 illustrates a particular case with an upper RCC pivot 200 with blades 203, with a fixed part 201 on the upper face of a bridge 120, which the structure 1 comprises, with stops in the vicinity of an upper pivot 210 of a shaft 22 inertial element 2; the latter is enclosed between this bridge 120 and a plate 130 of the structure 1, under which is fixed the fixed part 301 of a lower RCC pivot 300 with blades 303.
  • the shock-absorbing element 10 which extends the blades elastics of resonator 3, and which is not detailed on the figure 5 , is designed to support abutment on a shoulder 21 of the shaft 22, at a distance from the corresponding surface 121 of the bridge 120 (or respectively of the plate 13), and this shaft 22 comprises, on the side of the inertial element 2, a shoulder at a distance of the lower face 122 of the bridge 120 (or respectively of the plate 130).
  • the resonator mechanism 100 comprises a plurality of such inertial elements 2 which extend over several parallel levels, and the resonator mechanism 100 comprises at least one intermediate axial stop arranged between two neighboring levels of inertial elements 2.
  • the invention also relates to an oscillator 400 comprising such a resonator mechanism 100, arranged to cooperate with an escapement mechanism 300.
  • the invention also relates to a timepiece movement 500 comprising at least one such oscillator 400, and/or at least one such resonator mechanism 100.
  • the invention also relates to a watch 1000 comprising at least one such movement 500, or at least one such oscillator 400, or at least one such resonator mechanism 100.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Micromachines (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)

Claims (19)

  1. Resonatormechanismus (100) für die Uhrmacherei, umfassend eine Struktur (1) und wenigstens ein Trägheitselement (2), das angeordnet ist, um in einer Drehbewegung um eine Drehachse (D) zu schwingen, mit dem Trägheitsmittelpunkt des wenigstens einen Trägheitselements (2), der auf der Drehachse (D) ausgerichtet ist, wobei das wenigstens eine Trägheitselement (2) Rückzugsbeanspruchungen ausgesetzt ist, die von wenigstens einem biegsamen RCC-Drehzapfen (200, 201, 301) ausgeübt werden, umfassend eine Vielzahl von elastischen Resonatorlamellen (3), die jeweils an einem ersten Ende direkt oder indirekt an der Struktur (1) befestigt sind und an einem zweiten Ende direkt oder indirekt an dem wenigsten einen Trägheitselement (2) befestigt sind, wobei sich jede besagte elastische Resonatorlamelle (3) im Wesentlichen in einer Ebene senkrecht zu der Drehachse (D) erstreckt und im Wesentlichen in der Ebene senkrecht zu der Drehachse (D) verformbar ist, wobei die elastischen Resonatorlamellen (3) gerade sind und sich in zueinander parallelen oder zusammenfallenden Ebenen erstrecken, und wobei die Kreuzung, in Projektion auf eine Ebene senkrecht zu der Drehachse (D), der Richtungen (D1; D2), gemäß welchen sich die elastischen Resonatorlamellen (3) erstrecken, die Drehachse (D) definiert, dadurch gekennzeichnet, dass der Resonatormechanismus (100) ein stoßsicheres Element (10) umfasst, das ein starres Element (13) umfasst, auf dem die zweiten Enden der Lamellen (3) außen befestigt sind und in dessen Innerem das stoßsichere Element (10) fest mit wenigstens einer stoßsicheren biegsamen Lamelle (11) verbunden ist, die angeordnet ist, um das Trägheitselement (2) hängend zu halten, wobei das stoßsichere Element (10) den Stoßschutz der Lamellen (3) des biegsamen Drehzapfens (200, 201, 301) sicherstellt, und dadurch, dass das stoßsichere Element (10) einen elastischen Innenring (14) umfasst, an dem jede besagte stoßsichere biegsame Lamelle (11) innen befestigt ist, die außen an dem starren Element (13) befestigt ist, das im Wesentlichen ringförmig ist und an dem der elastische Innenring (14) aufgehängt ist, und dadurch, dass der elastische Innenring (14) eine Vielzahl von inneren Auflageflächen (12) umfasst, um eine Welle (22) konzentrisch eingespannt zu halten, welche das Trägheitselement (2) umfasst.
  2. Resonatormechanismus (100) nach Anspruch 1, dadurch gekennzeichnet, dass das starre Element (13) wenigstens 100 Mal steifer ist, gemäß allen Freiheitsgraden, als die elastischen Resonatorlamellen (3) des biegsamen Drehzapfens und als jede besagte stoßsichere biegsame Lamelle (11) des stoßsicheren elastischen Elements (10).
  3. Resonatormechanismus (100) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jede besagte stoßsichere biegsame Lamelle (11) im Wesentlichen spiralförmig um die Drehachse (D) angeordnet ist.
  4. Resonatormechanismus (100) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jede besagte stoßsichere biegsame Lamelle (11) im Wesentlichen umdrehend um die Drehachse (D) angeordnet ist.
  5. Resonatormechanismus (100) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das stoßsichere Element (10) eine Vielzahl von besagten stoßsicheren biegsamen Lamellen (11) umfasst, die identisch und regelmäßig um die Drehachse (D) verteilt sind.
  6. Resonatormechanismus (100) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Resonanzfrequenz in Drehung des stoßsicheren Elements (10) gemäß seinem eigenen ersten Modus größer als 1000 Hz ist.
  7. Resonatormechanismus (100) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Schwingungsfrequenz des Trägheitselements (2) zwischen 5 Hz und 100 Hz beträgt.
  8. Resonatormechanismus (100) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das wenigstens eine Trägheitselement (2) Rückzugsbeanspruchungen ausgesetzt ist, die von einem Paar besagter biegsamer RCC-Drehzapfen (200, 201, 301) ausgeübt werden, die identisch und gegenüberliegend montiert sind und von denen alle besagten Lamellen (3) an ihrem besagten zweiten Ende an dem einzigen und gemeinsamen stoßsicheren Element (10) befestigt sind.
  9. Resonatormechanismus (100) nach Anspruch 8, dadurch gekennzeichnet, dass sich der Massemittelpunkt des Trägheitselements (2) in gleicher Entfernung von den Drehachsen der biegsamen RCC-Drehzapfen (200, 201, 301) befindet, wenn diese Achsen verschieden sind oder zueinander ausgerichtet, wenn sie koaxial sind.
  10. Resonatormechanismus (100) nach Anspruch 8, dadurch gekennzeichnet, dass die biegsamen RCC-Drehzapfen (200, 201, 301) des Paars in parallelen Ebenen angeordnet sind, beidseits des Trägheitselements (2).
  11. Resonatormechanismus (100) nach Anspruch 10, dadurch gekennzeichnet, dass die biegsamen RCC-Drehzapfen (200, 201, 301) des Paars beidseits zweier fester Elemente der Struktur (1) angeordnet sind, zwischen denen das Trägheitselement (2) beweglich ist.
  12. Resonatormechanismus (100) nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass wenigstens eine besagte stoßsichere biegsame Lamelle (11) angeordnet ist, um das Trägheitselement (2) durch elastisches Einspannen zu halten.
  13. Resonatormechanismus (100) nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass das stoßsichere Element (10) eine Vielzahl von besagten stoßsicheren biegsamen Lamellen (11) umfasst, die jeweils angeordnet sind, um das Trägheitselement (2) durch elastisches Einspannen zu halten.
  14. Resonatormechanismus (100) nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass der Resonatormechanismus (100) axiale Anschlagmittel umfasst, umfassend wenigstens einen unteren axialen Anschlag und/oder einen oberen axialen Anschlag, wobei die axialen Anschlagmittel angeordnet sind, um durch anschlagendes Anliegen mit wenigstens einem besagten Trägheitselement (2) für den Schutz des Resonatormechanismus (100) gegen Axialstöße gemäß der Richtung der Drehachse (D) zusammenzuwirken.
  15. Resonatormechanismus (100) nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass der Resonatormechanismus (100) eine Vielzahl von besagten Trägheitselementen (2) umfasst, die sich auf mehreren parallelen Stufen erstrecken, und dadurch, dass der Resonatormechanismus (100) wenigstens einen axialen Zwischenanschlag umfasst, der zwischen zwei besagten benachbarten Stufen besagter Trägheitselemente (2) angeordnet ist.
  16. Oszillator (400), umfassend einen Resonatormechanismus (100) nach einem der Ansprüche 1 bis 15, angeordnet, um mit einem Hemmungsmechanismus (300) zusammenzuwirken.
  17. Werk für die Uhrmacherei (500), umfassend wenigstens einen Oszillator (400) nach Anspruch 16.
  18. Werk für die Uhrmacherei (500), umfassend wenigstens einen Resonatormechanismus (100) nach einem der Ansprüche 1 bis 15.
  19. Uhr (1000), umfassend wenigstens ein Werk (500) nach Anspruch 18 oder wenigstens einen Oszillator (400) nach Anspruch 16 oder wenigstens einen Resonatormechanismus (100) nach einem der Ansprüche 1 bis 15.
EP18169741.8A 2018-04-27 2018-04-27 Stossdämpfungsschutz eines resonators mit rcc-schwenkfedern Active EP3561606B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18169741.8A EP3561606B1 (de) 2018-04-27 2018-04-27 Stossdämpfungsschutz eines resonators mit rcc-schwenkfedern
JP2019056020A JP6706363B2 (ja) 2018-04-27 2019-03-25 Ｒｃｃピボットを備えた細長材共振器のための衝撃に対する保護
US16/372,768 US11454934B2 (en) 2018-04-27 2019-04-02 Shock protection for a strip resonator with RCC pivots
CN201910334372.0A CN110412854B (zh) 2018-04-27 2019-04-24 钟表谐振器机构、振荡器、钟表机芯和手表

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EP18169741.8A EP3561606B1 (de) 2018-04-27 2018-04-27 Stossdämpfungsschutz eines resonators mit rcc-schwenkfedern

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EP3561606B1 true EP3561606B1 (de) 2022-01-26

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EP3971655A1 (de) * 2020-09-18 2022-03-23 ETA SA Manufacture Horlogère Suisse Stossdämpfungsschutz mit anschlag eines resonatormechanismus mit flexibler drehführung
EP3982204A1 (de) * 2020-10-08 2022-04-13 The Swatch Group Research and Development Ltd Uhrresonator, der mindestens eine flexible führung umfasst

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EP3561606A1 (de) 2019-10-30
JP6706363B2 (ja) 2020-06-03
US11454934B2 (en) 2022-09-27
US20190332057A1 (en) 2019-10-31
JP2019191160A (ja) 2019-10-31
CN110412854B (zh) 2021-04-09
CN110412854A (zh) 2019-11-05

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