EP3035126B1 - Resonator einer Uhr mit sich kreuzenden Blättern - Google Patents

Resonator einer Uhr mit sich kreuzenden Blättern Download PDF

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Publication number
EP3035126B1
EP3035126B1 EP14199039.0A EP14199039A EP3035126B1 EP 3035126 B1 EP3035126 B1 EP 3035126B1 EP 14199039 A EP14199039 A EP 14199039A EP 3035126 B1 EP3035126 B1 EP 3035126B1
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EP
European Patent Office
Prior art keywords
resonator
connecting element
strips
angle
comprised
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
EP14199039.0A
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English (en)
French (fr)
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EP3035126A1 (de
Inventor
Gianni Di Domenico
Baptiste Hinaux
Laurent Klinger
Jean-Luc Helfer
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
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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.)
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Publication date
Priority to CH01979/14A priority Critical patent/CH710524A2/fr
Application filed by Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP14199039.0A priority patent/EP3035126B1/de
Priority to US15/114,336 priority patent/US9836024B2/en
Priority to PCT/EP2015/079515 priority patent/WO2016096677A1/fr
Priority to EP15808400.4A priority patent/EP3234699B1/de
Priority to JP2016535688A priority patent/JP6231686B2/ja
Priority to CN201580003174.6A priority patent/CN105980938B/zh
Publication of EP3035126A1 publication Critical patent/EP3035126A1/de
Priority to JP2017157043A priority patent/JP6401354B2/ja
Priority to JP2017157045A priority patent/JP6449951B2/ja
Application granted granted Critical
Publication of EP3035126B1 publication Critical patent/EP3035126B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G04B17/04—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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon

Definitions

  • the invention relates to a clock resonator comprising at least one oscillating mass with respect to a connecting element which it comprises and which is arranged to be fixed directly or indirectly to a structure of a clockwork movement, said at least one a mass being suspended from said connecting element by crossed blades which are elastic blades which extend at a distance from each other in two parallel planes, and whose projections of directions on one of said parallel planes intersect at level of a virtual pivot axis of said mass, and together define a first angle which is the apex angle, from said virtual pivot axis, to which extends the portion of said connecting member which is located between the fasteners said crossed blades on said connecting element.
  • the invention also relates to a watch movement comprising such a resonator.
  • the invention also relates to a watch, including such a movement, and / or such a resonator.
  • the invention relates to the field of time bases for mechanical clockwork mechanisms, in particular for watches.
  • a crossed-leaf rocker is a resonator that can be used as a timebase in a mechanical watch, instead of a balance-spring.
  • the document EP 2,911,012 A1 in the name of CSEM describes a virtual rotary clock oscillator with a pendulum which is connected by several flexible blades to a support, in particular in a monolithic embodiment. At least two flexible blades extend in planes perpendicular to the plane of the oscillator, and intersecting each other along a line defining the oscillation geometric axis of the oscillator, this axis intersecting the two blades to seven eighths of their respective length.
  • the blades can originate perpendicularly to the sides of a regular inner polygon with N sides, with a symmetry of order N around the virtual oscillation axis, but the only particular configuration illustrated is that of an inner square, in which the two planes comprising the blades are perpendicular to each other.
  • the number of blades and their arrangement is defined by a compromise between the congestion granted to the system, particularly from an aesthetic point of view, and the stability of the system.
  • the document EP 2,911,012 A1 does not disclose particular geometrical parameters to be favored for the best isochronism.
  • Cross slides are also known from the document EP2645189 .
  • a crossed-leaf tuning fork is known from the document US3628781 , but not in watchmaking.
  • the invention proposes to eliminate these disadvantages by proposing an optimized geometry.
  • the invention relates to a clock resonator according to claim 1.
  • the invention also relates to a watch movement comprising such a resonator.
  • the invention also relates to a watch comprising such a movement, and / or such a resonator.
  • center of mass used here can also be understood as the "center of inertia”.
  • An explanatory example relates to a clock resonator 100 comprising at least one mass 1 oscillating relative to a connecting element 2 that includes this resonator.
  • This connecting element 2 is arranged to be fixed directly or indirectly to a structure of a clockwork movement 200.
  • This at least one mass 1 is suspended from the connecting element 2 by crossed blades 3, 4, which are elastic blades which extend at a distance from one another in two parallel planes, and whose projections directions on one of these parallel planes intersect at a virtual pivot axis O of the mass 1, and together define a first angle ⁇ which is the apex angle, from this virtual pivot axis O, face to which extends the portion of the connecting element 2 which is located between the fasteners of the crossed blades 3, 4, on the connecting element 2.
  • crossed blades 3, 4 are elastic blades which extend at a distance from one another in two parallel planes, and whose projections directions on one of these parallel planes intersect at a virtual pivot axis O of the mass 1, and together define a first angle ⁇ which is the apex angle, from this virtual pivot axis O, face to which extends the portion of the connecting element 2 which is located between the fasteners of the crossed blades 3, 4, on the connecting element 2.
  • this first angle ⁇ is between 68 ° and 76 °.
  • the mass 1 is a pendulum, as visible on the Figures 1 and 1A , which illustrate, in solid lines, the geometry of a resonator 100 with cross-leaf balance, in its rest position.
  • a rocker 1 is held fixed to a connecting element 2 by two crossed blades 3 and 4.
  • These crossed blades 3 and 4 are elastic blades which extend at a distance from one another in two parallel planes, and of which the projections of the directions on one of these parallel planes intersect at a virtual pivot axis O of this balance 1.
  • These crossed blades allow the rotation of this balance 1, and substantially prevent the translation of the balance 1 in the three directions XYZ, and provide good resistance to small shocks.
  • the figure 1 represents a general case where the embedding of crossed blades 3, 4 is oblique in the connecting element 2 which carries them.
  • the Figure 1A represents a preferred configuration where this embedding is carried out at a surface which is orthogonal to the end of each blade 3, 4, at its embedment.
  • the origin of the coordinates O is placed at the intersection of the blades 3 and 4 when the resonator 100 is in its rest position.
  • the instantaneous center of rotation and the center of mass of the balance are also located at the origin O when the balance is in its rest position.
  • the bisector of the first angle ⁇ defines a direction X with which the projections of the two blades 3 and 4 in one of said parallel planes make an angle ⁇ which is half of the first angle ⁇ .
  • the resonator 100 is symmetrical with respect to the axis OX.
  • the first angle ⁇ has a value of 90 °.
  • the inner radius ri is the distance between the point O and the embedding of the blades 3 and 4 in the connecting element 2.
  • the outer radius re is the distance between the point O and the embedding of the blades 3 and 4 in the pendulum 1.
  • the first angle ⁇ is the angle between the two blades 3 and 4 when the resonator 100 to balance is in its rest position.
  • This first angle ⁇ is the apex angle (in O) which defines the opening of the blades 3 and 4 with respect to the connecting element 2, and in front of which extends the portion of this connecting element 2 which is located between the fasteners of the crossed blades 3 and 4 on the latter.
  • the Figures 1 and 1A show an instantaneous value ⁇ i of the current angle ⁇ , corresponding to the deviation of a point M towards its instantaneous position Mi, corresponding to bent positions 3i and 4i of the blades 3 and 4, shown in broken lines on the Figures 1 and 1A .
  • This optimal geometric configuration may vary very slightly, depending on the width of the blades 3 and 4, and the amplitude of the oscillation of the balance.
  • the resonator 100 is monolithic.
  • the resonator 100 is made of micro-machinable material that can be produced by "MEMS” or “LISA” technologies, or in silicon or in silicon oxide, or in at least partially amorphous metal, or in metallic glass, or in quartz, or in DLC.
  • the first angle ⁇ is between 70 ° and 76 °.
  • the first angle ⁇ is between 70 ° and 74 °.
  • the invention relates to a clock resonator with crossed blades of the tuning fork type, as visible on the figure 8 .
  • the invention also relates to a watch movement 200 comprising at least one such resonator 100.
  • the invention also relates to a watch, including such a movement 200, or / and such a resonator 100.
  • the invention thus makes it possible to make a cross-beam resonator simultaneously isochronous and independent of the positions.

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

Claims (10)

  1. Uhrenresonator (100), umfassend mindestens eine Masse (1), die in Bezug auf ein Verbindungselement (2) oszilliert, das er aufweist und das dafür ausgelegt ist, direkt oder indirekt an einer Struktur eines Uhrwerks (200) befestigt zu sein, wobei die mindestens eine Masse (1) an dem Verbindungselement (2) durch gekreuzte Plättchen (3, 4) aufgehängt ist, die elastische Plättchen sind, die sich in gegenseitigem Abstand in zwei parallelen Ebenen erstrecken und deren Projektionen der Richtungen auf eine der parallelen Ebenen sich auf Höhe einer virtuellen Drehachse (O) der Masse (1) kreuzen und die zusammen einen ersten Winkel (α) definieren, der der Scheitelwinkel ausgehend von der virtuellen Drehachse (O) ist, gegenüber der sich der Teil des Verbindungselements (2) erstreckt, der sich zwischen den Befestigungen der gekreuzten Plättchen (3, 4) an dem Verbindungselement (2) befindet, wobei der erste Winkel (α) im Bereich von 68° bis 76° liegt, wobei der Resonator (100) in der Projektion auf eine der parallelen Ebenen symmetrisch in Bezug auf die Winkelhalbierende (OX) des ersten Winkels (α) ist, wenn er in seiner Ruheposition ist, dadurch gekennzeichnet, dass der Resonator (100) ein Resonator mit gekreuzten Plättchen des Stimmgabeltyps ist, der mindestens zwei oszillierende Massen (1) symmetrisch in Bezug auf eine Querachse (Y) senkrecht zu der Winkelhalbierenden (OX) aufweist, die am selben Verbindungselement (2) jeweils durch die gekreuzten Plättchen (3, 4) aufgehängt sind.
  2. Resonator (100) nach Anspruch 1, dadurch gekennzeichnet, dass der erste Winkel (α) im Bereich von 70° bis 76° liegt.
  3. Resonator (100) nach Anspruch 2, dadurch gekennzeichnet, dass der erste Winkel (α) im Bereich von 70° bis 74° liegt.
  4. Resonator (100) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Plättchen (3, 4) bemessen sind mit einem inneren Radius (ri) zwischen der virtuellen Drehachse (O) und ihrem Befestigungspunkt an dem Verbindungselement (2), mit einem äußeren Radius (re) zwischen der virtuellen Drehachse (O) und ihrem Befestigungspunkt an der Masse (1) und mit einer Gesamtlänge (L), derart, dass L = ri + re, so dass ein Verhältnis (Q) mit Q = ri/L im Bereich von 0,12 bis 0,13 liegt.
  5. Resonator (100) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Plättchen (3, 4) bemessen sind mit einem inneren Radius (ri) zwischen der virtuellen Drehachse (O) und ihrem Befestigungspunkt an dem Verbindungselement (2), mit einem äußeren Radius (re) zwischen der virtuellen Drehachse (O) und ihrem Befestigungspunkt an der Masse (1) und mit einer Dicke (e) in der Ebene jedes Plättchens (3, 4), derart, dass ein Verhältnis (Qm) mit Qm = (ri + e/2)/(ri + e/2 + re) im Bereich von 0,12 bis 0,13 liegt.
  6. Resonator (100) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die gekreuzten Plättchen (3, 4) jeweils in das Verbindungselement (2) auf Höhe einer Oberfläche des Verbindungselements (2) eingelassen sind, die zu dem Ende des Plättchens (3, 4) bei Betrachtung auf Höhe ihres Einbaus senkrecht ist.
  7. Resonator (100) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Resonator (100) monolithisch ist.
  8. Resonator (100) nach Anspruch 7, dadurch gekennzeichnet, dass er aus Silicium oder aus Siliciumoxid, aus Metallglas oder aus Quarz oder aus DLC ist.
  9. Uhrwerk (200), das eine Struktur aufweist, an der mindestens ein Verbindungselement (2), das ein Resonator (100) nach einem der Ansprüche 1 bis 8 aufweist, direkt oder indirekt befestigt ist.
  10. Uhr (300), umfassend ein Werk (200) nach Anspruch 9 und/oder mindestens einen Resonator (100) nach einem der Ansprüche 1 bis 8.
EP14199039.0A 2014-12-18 2014-12-18 Resonator einer Uhr mit sich kreuzenden Blättern Active EP3035126B1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP14199039.0A EP3035126B1 (de) 2014-12-18 2014-12-18 Resonator einer Uhr mit sich kreuzenden Blättern
CH01979/14A CH710524A2 (fr) 2014-12-18 2014-12-18 Résonateur d'horlogerie à lames croisées.
PCT/EP2015/079515 WO2016096677A1 (fr) 2014-12-18 2015-12-14 Resonateur d'horlogerie a lames croisees
EP15808400.4A EP3234699B1 (de) 2014-12-18 2015-12-14 Resonator einer uhr mit sich kreuzenden blättern
US15/114,336 US9836024B2 (en) 2014-12-18 2015-12-14 Timepiece resonator with crossed strips
JP2016535688A JP6231686B2 (ja) 2014-12-18 2015-12-14 交差条片を有する計時器共振器
CN201580003174.6A CN105980938B (zh) 2014-12-18 2015-12-14 具有交叉条带的钟表谐振器
JP2017157043A JP6401354B2 (ja) 2014-12-18 2017-08-16 交差条片を有する計時器共振器
JP2017157045A JP6449951B2 (ja) 2014-12-18 2017-08-16 交差条片を有する計時器共振器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14199039.0A EP3035126B1 (de) 2014-12-18 2014-12-18 Resonator einer Uhr mit sich kreuzenden Blättern

Publications (2)

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EP3035126A1 EP3035126A1 (de) 2016-06-22
EP3035126B1 true EP3035126B1 (de) 2017-12-13

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US (1) US9836024B2 (de)
EP (2) EP3035126B1 (de)
JP (3) JP6231686B2 (de)
CN (1) CN105980938B (de)
CH (1) CH710524A2 (de)
WO (1) WO2016096677A1 (de)

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EP3206089B1 (de) 2016-02-10 2018-12-19 The Swatch Group Research and Development Ltd. Resonatormechanismus eines uhrwerks
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EP3561603B1 (de) * 2018-04-25 2021-01-06 The Swatch Group Research and Development Ltd Reguliermechanismus einer uhr mit verbundenen resonatoren
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EP4012506A1 (de) * 2020-12-14 2022-06-15 The Swatch Group Research and Development Ltd Resonatormechanismus eines uhrwerks, der mit einem verschieberahmen ausgestattet ist
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JP2017223702A (ja) 2017-12-21
JP6401354B2 (ja) 2018-10-10
JP6449951B2 (ja) 2019-01-09
EP3234699A1 (de) 2017-10-25
WO2016096677A1 (fr) 2016-06-23
CH710524A2 (fr) 2016-06-30
JP2017503155A (ja) 2017-01-26
JP6231686B2 (ja) 2017-11-15
US20170010586A1 (en) 2017-01-12
CN105980938A (zh) 2016-09-28
CN105980938B (zh) 2018-04-03
US9836024B2 (en) 2017-12-05
EP3035126A1 (de) 2016-06-22
JP2017223701A (ja) 2017-12-21
EP3234699B1 (de) 2023-03-08

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