EP3200029B1 - Mécanisme résonateur d'horlogerie - Google Patents

Mécanisme résonateur d'horlogerie Download PDF

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Publication number
EP3200029B1
EP3200029B1 EP16153274.2A EP16153274A EP3200029B1 EP 3200029 B1 EP3200029 B1 EP 3200029B1 EP 16153274 A EP16153274 A EP 16153274A EP 3200029 B1 EP3200029 B1 EP 3200029B1
Authority
EP
European Patent Office
Prior art keywords
strip
attachment point
resonator mechanism
timepiece resonator
pivot axis
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
EP16153274.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3200029A1 (fr
Inventor
Jean-Luc Helfer
Gianni Di Domenico
Pascal Winkler
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to CH1112016A priority Critical patent/CH712068B1/fr
Priority to EP16153274.2A priority patent/EP3200029B1/fr
Priority to TW105143670A priority patent/TWI745330B/zh
Priority to US15/400,327 priority patent/US9971303B2/en
Priority to KR1020170008106A priority patent/KR101946137B1/ko
Priority to JP2017010002A priority patent/JP6334752B2/ja
Priority to CN201710060691.8A priority patent/CN107024852B/zh
Priority to RU2017102596A priority patent/RU2718360C1/ru
Publication of EP3200029A1 publication Critical patent/EP3200029A1/fr
Application granted granted Critical
Publication of EP3200029B1 publication Critical patent/EP3200029B1/fr
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Anticipated expiration legal-status Critical

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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
    • 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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • G04B17/10—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
    • 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
    • G04C3/02—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 pendulum
    • 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

Definitions

  • the invention relates to a clockwork resonator mechanism comprising a pivoting mass arranged to rotate rotatably about a virtual pivot axis, said resonator mechanism comprising a first fixed support and a second fixed support to which a flexible guide mechanism is attached.
  • pivoting which comprises a rotary support connected to said first fixed support by a first elastic assembly and connected to said second fixed support by a second elastic assembly which defines said virtual pivot axis with said first elastic assembly, said pivoting mass being attached to said rotary support or constituted by said rotary support
  • the invention also relates to a timepiece movement comprising at least one such resonator mechanism.
  • the invention also relates to a watch comprising at least one such movement.
  • the invention relates to the field of clockwork resonator mechanisms.
  • Such three-dimensional systems or at least on several levels are known from the document EP2911012 on behalf of CSEM which describes a rotary oscillator for a timepiece comprising a support element intended to allow the assembly of the oscillator on a timepiece, a balance, a plurality of flexible blades connecting the support element to the balance and capable of exerting a torque of recall on the balance, and a mounted serge integral with the balance.
  • the plurality of flexible blades comprises at least two flexible blades including a first blade arranged in a first plane perpendicular to the plane of the oscillator, and a second blade arranged in a second plane perpendicular to the plane of the oscillator and intersecting with the first plane .
  • the oscillator's geometric axis of oscillation is defined by the intersection of the first plane and the second plane, this geometric axis of oscillation crossing the first and second blades at 7/8 th of their respective length. This arrangement is known from the work of Wittrick from 1948 on flexible pivots.
  • the document EP1013949 in the name of SYSMELEC describes a pivot consisting of a fixed base and a movable member connected by a flexible structure, with an intermediate element connected to the base and the movable element, respectively, by two pairs of flexible arms. Each of the arms has an articulation at each end formed by semi-circular recesses, creating flexible zones.
  • the pivot further comprises a kinematic control circuit connecting the base and the movable member and the intermediate element, so that the angular movement of the intermediate element corresponds to that of the movable element.
  • the invention seeks the advantages of the two known two-dimensional and three-dimensional geometries, in a simple and economical execution, therefore two-dimensional.
  • the invention thus relates to a clock resonator mechanism according to claim 1.
  • the invention also relates to a timepiece movement comprising at least one such resonator mechanism.
  • the invention also relates to a watch comprising at least one such movement.
  • the invention is a two-dimensional crossed blade pivot with two blades which do not intersect. It has thin parts that flex, and wide parts that are stiff enough not to deform at all or very little. As these wide parts do not participate in the bending of the blades, they can be chosen in any shape.
  • the invention relates to a timepiece resonator mechanism 1 comprising a pivoting mass 2, which is arranged to rotate rotatably about a virtual pivot axis A.
  • This resonator mechanism 1 comprises a first fixed support 11 and a second fixed support 12, to which is fixed a flexible pivoting guide mechanism 10.
  • This flexible pivoting guide mechanism 10 comprises a movable rotary support 3, which is connected to the first support. fixed 11 by a first elastic assembly 21 that comprises the flexible pivoting guide mechanism 10, and is connected to the second fixed support 12 by a second elastic assembly 22, which also comprises the flexible pivoting guide mechanism 10.
  • the first elastic assembly 21 and the second elastic assembly 22 together define the virtual pivot axis A.
  • the pivoting mass 2 can be attached to the rotating support 3, as visible on the figure 6 , or constituted by the rotating support 3.
  • the flexible pivoting guide mechanism 10 is flat.
  • the first elastic assembly 21 comprises, on either side of the virtual pivot axis A, and joined by a first intermediate blade 51 more rigid that each of them, a first external flexible blade 31 and a first internal flexible blade 41. These first external flexible blade 31 and first internal flexible blade 41 together define a first direction D1 passing through the virtual pivot axis A.
  • the second elastic assembly 22 comprises a second flexible blade 62, preferably passing through the virtual pivot axis A, and defining a second direction D2, different from the first direction D1, passing through the virtual pivot axis A where it crosses the first direction D1, and forming with it an angle ⁇ . In a preferred arrangement, this second flexible blade 62 is crossed, in full material, by this virtual pivot axis A.
  • the first external flexible blade 31 and the first internal flexible blade 41 constitute the most flexible parts of the first elastic assembly 21.
  • the first elastic assembly 21 comprises only the first intermediate blade 51, the first external flexible blade 31, and the first internal flexible blade 41.
  • the first external flexible blade 31, and the first internal flexible blade 41 have an identical section.
  • the first elastic assembly 21 and the second elastic assembly 22 have different rigidities. To symmetrize their rigidity, and even their deformation, it is possible to artificially thicken the second elastic assembly 22 at the same location as the first elastic assembly, for example.
  • the second flexible blade 62 may be a single blade, as seen in the pictures. figures 2 and 3 , or else, like the first elastic assembly 21, an alternation in series of blades of different flexibility.
  • the second elastic assembly 22 comprises a second external flexible blade 32 and a second internal flexible blade 42 on either side of a second intermediate blade 52 more rigid than each of them and constituting with them the second flexible blade 62.
  • the second intermediate blade 52 passes through the virtual pivot axis A, that is to say that it is traversed, in full material, by this virtual pivot axis A.
  • the second external flexible blade 32 and the second internal flexible blade 42 have an identical section.
  • the first elastic assembly 21 and the second elastic assembly 22 are rigidly embedded in the first fixed support 11 and respectively the second fixed support 12.
  • the second flexible blade 62 is embedded in the second fixed support 12 at the level of a second external recess 72, and in the rotary support 3 at the level of a second internal recess 82.
  • the second external recess 72 and the second internal embedding 82 are located on either side of a straight line parallel to the direction D1 defined by the first elastic assembly 21, and passing through the virtual pivot axis A. More particularly the second external embedding 72 and the second Internal recess 82 are located on either side of the virtual pivot axis A. More particularly still, the second external recess 72 and the second internal recess 82 are aligned with the virtual pivot axis A, as visible on the figures.
  • first direction D1 and the second direction D2 are curvilinear directions intersecting at the level of the virtual pivot axis A, the modeling is easier with straight elements.
  • first direction D1 is straight.
  • second direction D2 is straight.
  • first direction D1 is right, and the second direction D2 is right.
  • the invention is illustrated in a particular preferred case where the most flexible blades, defining the flexible pivot of the flexible pivoting guide mechanism 10, and the virtual pivot axis A, are straight flexible blades.
  • Other geometries can nevertheless be envisaged, for example in the form of a coil, or others.
  • the first elastic assembly 21 surrounds the second elastic assembly 22.
  • the first intermediate blade 51 completely surrounds the mobile rotary support 3, as visible on the figure. figure 3 . While, on the variants of figures 2 , and 4 to 8 , the mobile rotary support 3 is external to the first intermediate blade 51.
  • the rotary support 3 at the end of the blades thus pivots about a virtual pivot axis A which is at the intersection of the two directions of the blades.
  • a virtual pivot axis A which is at the intersection of the two directions of the blades.
  • the less flexible parts of the first elastic assembly 21 and / or of the second elastic assembly 22 are skeletonized to minimize their mass and avoid undesirable clean modes.
  • it is essentially the first intermediate blade 51, and the second intermediate blade 52, as visible on the figure. figure 8 .
  • the outer ends of the first elastic assembly 21 and of the second elastic assembly 22 are rigidly connected respectively to the first fixed support 11 and to the second fixed support 12, and the internal ends of the first elastic assembly 21 and of the second elastic assembly 22 are rigidly connected to the rotating support 3.
  • the first direction D1 and the second direction D2 form with each other an angle of between 70 ° and 87 °, and more particularly of 83.65 °, as visible on the figures. figures 5 to 7 .
  • the patent application CH01979 / 14 in the name of Swatch Group Research & Development Ltd, incorporated herein by reference, describes a cross blade timepiece resonator and discusses the importance of the value of this particular angle.
  • the first external flexible strip 31 is rigidly connected to the first intermediate strip 51 at a first external embedding point 310
  • the first internal flexible strip 41 is rigidly connected to the first intermediate strip 51 at a first point d 'internal embedding 410.
  • a first intermediate distance d1 defined by the difference between the first external embedding point 310 and the first internal embedding point 410, and a first total distance L1 defined by the difference between, on the one hand, a first embedding point external 311 between the first external blade 31 and the first fixed support 11, and on the other hand a first internal embedding point 411 between the first internal blade 41 and the rotary support 3, define a ratio d1 / L1 between 0.05 and 0.25, and in particular equal to 0.20.
  • a first radius r1 defined by the difference between the first internal embedding point 411 and the virtual pivot axis A, and the first total distance L1 define a ratio r1 / L1 between 0.05 and 0.3, and in particular equal to 0.185.
  • the second external flexible strip 32 is rigidly connected to the second intermediate strip 52 at a second external embedding point 320
  • the second internal flexible strip 42 is rigidly connected to the second intermediate strip 52 in a second internal embedding point 420.
  • a second intermediate distance d2 defined by the distance between the second external embedding point 320 and the second embedding point internal 420, and a second total distance L2 defined by the distance between, on the one hand a second external embedding point 321 between the second external blade 32 and the second fixed support 12, and on the other hand a second point d 'internal embedding 421 between the second internal blade 42 and the rotary support 3, define a d2 / L2 ratio of between 0.05 and 0.25, and in particular equal to 0.20.
  • a second radius r2 defined by the difference between the second internal embedding point 421 and the virtual pivot axis A, and the second total distance L2 define a ratio r2 / L2 between 0.05 and 0.3, and in particular equal to 0.185.
  • the invention lends itself particularly well to a monolithic execution.
  • the first fixed support 11, the second fixed support 12, and the flexible pivoting guide mechanism 10 form a one-piece assembly.
  • This one-piece assembly can be produced by technologies of the “MEMS” or “LIGA” or similar type, in silicon or the like, thermally compensated, in particular by a particular local growth of silicon dioxide, in certain areas of the part arranged for this purpose. , when this one-piece assembly is made of silicon.
  • the clockwork resonator mechanism 1 can comprise a plurality of such flexible pivoting guide mechanisms 10 mounted in series, to increase the total angular travel, arranged in parallel planes, and around the same virtual pivot axis A.
  • the invention also relates to a timepiece movement 100 comprising at least one such resonator mechanism 1.
  • the invention also relates to a watch 1000 comprising at least one such movement 100.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Electric Clocks (AREA)
  • Telephone Set Structure (AREA)
  • Micromachines (AREA)
EP16153274.2A 2016-01-29 2016-01-29 Mécanisme résonateur d'horlogerie Active EP3200029B1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CH1112016A CH712068B1 (fr) 2016-01-29 2016-01-29 Mécanisme résonateur d'horlogerie à pivot virtuel.
EP16153274.2A EP3200029B1 (fr) 2016-01-29 2016-01-29 Mécanisme résonateur d'horlogerie
TW105143670A TWI745330B (zh) 2016-01-29 2016-12-28 時計共振器機構、時計機芯及手錶
US15/400,327 US9971303B2 (en) 2016-01-29 2017-01-06 Timepiece resonator mechanism
KR1020170008106A KR101946137B1 (ko) 2016-01-29 2017-01-17 타임피스 공명기 메커니즘
JP2017010002A JP6334752B2 (ja) 2016-01-29 2017-01-24 時計用共振器機構
CN201710060691.8A CN107024852B (zh) 2016-01-29 2017-01-25 钟表谐振器机构
RU2017102596A RU2718360C1 (ru) 2016-01-29 2017-01-27 Часовой резонансный механизм

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16153274.2A EP3200029B1 (fr) 2016-01-29 2016-01-29 Mécanisme résonateur d'horlogerie

Publications (2)

Publication Number Publication Date
EP3200029A1 EP3200029A1 (fr) 2017-08-02
EP3200029B1 true EP3200029B1 (fr) 2021-05-19

Family

ID=55272301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16153274.2A Active EP3200029B1 (fr) 2016-01-29 2016-01-29 Mécanisme résonateur d'horlogerie

Country Status (8)

Country Link
US (1) US9971303B2 (ja)
EP (1) EP3200029B1 (ja)
JP (1) JP6334752B2 (ja)
KR (1) KR101946137B1 (ja)
CN (1) CN107024852B (ja)
CH (1) CH712068B1 (ja)
RU (1) RU2718360C1 (ja)
TW (1) TWI745330B (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH713151B1 (fr) * 2016-11-23 2020-09-30 Swatch Group Res & Dev Ltd Lame flexible pour l'horlogerie, et procédé de fabrication.
CH713960B1 (fr) * 2017-07-07 2023-08-31 Eta Sa Mft Horlogere Suisse Elément sécable pour oscillateur d'horlogerie.
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
US11409245B2 (en) * 2018-11-08 2022-08-09 Eta Sa Manufacture Horlogere Suisse Anti shock protection for a resonator mechanism with a rotary flexure bearing
EP3667432B1 (fr) * 2018-12-13 2022-05-11 ETA SA Manufacture Horlogère Suisse Résonateur d'horlogerie comportant au moins un guidage flexible
CN114127641B (zh) * 2019-07-12 2024-03-22 百达翡丽日内瓦公司 调节挠性枢轴钟表振荡器的方法
EP3771947A1 (fr) * 2019-07-29 2021-02-03 ETA SA Manufacture Horlogère Suisse Dispositif de guidage en pivotement et mécanisme résonateur d`horlogerie pour une masse pivotante
EP3812842B1 (fr) * 2019-10-24 2023-11-29 The Swatch Group Research and Development Ltd Dispositif de guidage en pivotement pour une masse pivotante et mécanisme résonateur d'horlogerie

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1013949A1 (fr) * 1998-12-17 2000-06-28 Sysmelec SA Pivot flexible à grande course angulaire et à rigidité élevée
CH708113B1 (de) * 2007-09-13 2014-12-15 Stéphane Von Gunten Anker für eine Uhrenhemmung.
DE602008006057D1 (de) * 2008-07-04 2011-05-19 Swatch Group Res & Dev Ltd Gekoppelte Resonatoren für Uhr
EP2596406B1 (fr) * 2010-07-19 2019-03-27 Nivarox-FAR S.A. Mecanisme oscillant a pivot elastique et mobile de transmission d'energie
EP2574994A1 (fr) * 2011-09-29 2013-04-03 Asgalium Unitec SA Resonateur a diapason pour mouvement horloger mecanique
EP2911012B1 (fr) * 2014-02-20 2020-07-22 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Oscillateur de pièce d'horlogerie
EP2975469B1 (fr) * 2014-07-14 2017-07-05 Nivarox-FAR S.A. Guidage flexible horloger
EP3191896B1 (fr) * 2014-09-09 2019-04-24 The Swatch Group Research and Development Ltd Résonateur combiné à isochronisme amélioré
CH710537A2 (fr) * 2014-12-18 2016-06-30 Swatch Group Res & Dev Ltd Oscillateur d'horlogerie à diapason.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
JP6334752B2 (ja) 2018-05-30
KR20170091012A (ko) 2017-08-08
CN107024852A (zh) 2017-08-08
CN107024852B (zh) 2020-01-07
KR101946137B1 (ko) 2019-02-08
RU2718360C1 (ru) 2020-04-02
CH712068B1 (fr) 2019-11-29
TW201736994A (zh) 2017-10-16
EP3200029A1 (fr) 2017-08-02
CH712068A2 (fr) 2017-07-31
TWI745330B (zh) 2021-11-11
JP2017134070A (ja) 2017-08-03
US9971303B2 (en) 2018-05-15
US20170220002A1 (en) 2017-08-03

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