EP2908186A1 - Regulierung eines Resonators einer Uhr durch örtliche Verschiebung der Spiralfeder - Google Patents

Regulierung eines Resonators einer Uhr durch örtliche Verschiebung der Spiralfeder Download PDF

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Publication number
EP2908186A1
EP2908186A1 EP14155429.5A EP14155429A EP2908186A1 EP 2908186 A1 EP2908186 A1 EP 2908186A1 EP 14155429 A EP14155429 A EP 14155429A EP 2908186 A1 EP2908186 A1 EP 2908186A1
Authority
EP
European Patent Office
Prior art keywords
balance
spiral
frequency
resonator mechanism
point
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.)
Granted
Application number
EP14155429.5A
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English (en)
French (fr)
Other versions
EP2908186B1 (de
Inventor
Thierry Hessler
Davide Sarchi
Marc Stranczl
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
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Publication date
Application filed by Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to CH2012014A priority Critical patent/CH709277B1/fr
Priority to EP14155429.5A priority patent/EP2908186B1/de
Priority to EP14184155.1A priority patent/EP2908189A3/de
Priority to EP14184631.1A priority patent/EP2908190B1/de
Priority to JP2016566664A priority patent/JP6224854B2/ja
Priority to RU2016150515A priority patent/RU2680411C1/ru
Publication of EP2908186A1 publication Critical patent/EP2908186A1/de
Application granted granted Critical
Publication of EP2908186B1 publication Critical patent/EP2908186B1/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
    • G04B17/06—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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • 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
    • G04B18/00—Mechanisms for setting frequency
    • G04B18/04—Adjusting the beat of the pendulum, balance, or the like, e.g. putting into beat
    • G04B18/06—Adjusting the beat of the pendulum, balance, or the like, e.g. putting into beat by setting the collet or the stud of a hairspring

Definitions

  • the invention relates to a method for maintaining and regulating a clock resonator mechanism around its natural frequency.
  • the invention also relates to a watch movement comprising at least one resonator mechanism comprising at least one balance-spiral assembly, the spiral is held between a stud at a first outer end and a ferrule at a second inner end.
  • the invention also relates to a timepiece comprising at least one such watch movement.
  • the invention relates to the field of time bases in mechanical watchmaking, in particular based on a spiral balance resonator mechanism.
  • the invention proposes to manufacture a time base as accurate as possible.
  • the invention relates to a method for maintaining and regulating a clock-based resonator mechanism around its natural frequency, characterized in that at least one regulating device that prints at least one component is used. of said resonator mechanism a periodic movement, in that said periodic movement imposes a periodic modulation at least of the rest point of said resonator mechanism, and characterized in that said periodic movement is printed with a control frequency which is between 0.9 times and 1.1 times the value of an integer multiple of said natural frequency, said integer being greater than or equal to 2.
  • a said resonator mechanism comprising at least one balance-spring assembly, the spiral of which is held between a stud at a first external end and a ferrule at a second internal end, and at least one said regulating device is made to act on at least one point of said balance spring and / or on said peak or / and on said ferrule.
  • the invention also relates to a watch movement comprising at least one such resonator mechanism comprising at least one balance-spiral assembly, the spiral is held between a stud at a first outer end and a ferrule at a second inner end.
  • the invention also relates to a timepiece comprising at least one such watch movement.
  • the object of the invention is to manufacture a time base for rendering a timepiece, in particular a mechanical timepiece, in particular a mechanical watch, as accurately as possible.
  • a parametric resonator system makes it possible in particular to reduce the influence of this escapement mechanism, and thus make the watch more accurate.
  • a parametric oscillator uses, for the maintenance of the oscillations, a parametric actuation which consists in varying at least one of the parameters of the oscillator with a regulation frequency ⁇ R which is between 0.9 times and 1.1 times the value of an integer multiple of the natural frequency ⁇ 0 of the oscillator system to be regulated, this integer being greater than or equal to 2.
  • the regulation frequency ⁇ R has the value of an integer multiple, in particular double, of the natural frequency ⁇ 0 of the oscillator system to be regulated.
  • regulator 2 the oscillator which serves for the maintenance and regulation of the other system maintained, which is called “the resonator” 1.
  • T is the kinetic energy
  • V the potential energy and the inertia I ( t )
  • stiffness k (t) and the rest position x 0 ( t ) of said resonator are a periodic function of time.
  • x is the generalized coordinate of the resonator.
  • the function f ( t ) takes the value 0 in the case of a non-forced oscillator.
  • This function f (t) can, again, be a periodic function, or be representative of a Dirac type pulse.
  • the invention consists in varying, by the action of a maintenance oscillator called regulator, one and / or the other, or all, the terms ⁇ (t), k (t), l (t) ), x 0 (t), with a regulation frequency ⁇ R which is between 0.9 times and 1.1 times the value of an integer multiple, in particular double, of the natural frequency ⁇ 0 of the oscillator system to be regulated.
  • a maintenance oscillator called regulator
  • the regulation frequency ⁇ R is an integer multiple, in particular double, of the natural frequency ⁇ 0 of the resonator system to be regulated.
  • one or more or all of the terms ⁇ (t), k (t), l (t), x 0 (t), vary with a regulation frequency ⁇ R which is preferably multiple integer, especially double, of the own frequency ⁇ 0 of the resonator system to be regulated.
  • the maintenance oscillator or regulator in addition to the modulation of the parametric terms, also introduces a non-parametric maintenance term f (t) , the amplitude of which is negligible once the parametric regime is reached [ WB Case, The pumping of a swing from the standing position, Am. J. Phys. 64, 215 (1996) )].
  • forcing term f (t) may be introduced by a second maintenance mechanism.
  • Q ⁇ / ⁇ .
  • ⁇ 2 boy Wut The with L the length of the pendulum, and g the attraction of gravity.
  • the term of zero order can still take the form ⁇ 2 (A, t), where A is the amplitude of oscillation.
  • the principle can be reproduced in a timepiece or a watch which comprises a mechanical resonator balance sprung, with one end of the spiral attached to a ferrule integral with the balance, and the other end attached to a stud.
  • the parametric maintenance of such a balance spring system can in particular be achieved by making periodically movable, this peak, or this ferrule, or another point of this spiral.
  • the oscillation can be maintained and the accuracy of the system is notoriously improved.
  • the maintenance is advantageously carried out with an integer multiple frequency, in particular double, of the frequency of the maintained resonator.
  • the mechanical means of maintenance can take different forms, that presented here consists in the maintenance by displacement of the peak.
  • the principle is to vary the position of the peak in x or y or z or rotation around the axis x or y or z, in particular in rotation at an angle e in the xy plane, or in twisting according to the angle ⁇ , as visible on the figure 1 .
  • the excitation at twice the frequency can be performed with a square or pulsed signal, it is not essential to have a sinusoidal excitation.
  • the maintenance regulator does not need to be very precise: its possible lack of precision only results in a loss of amplitude, but without variation of the frequency (except of course if this frequency is very variable, which is to be avoided).
  • these two oscillators, maintenance regulator and resonator maintained are not coupled, but one of the two maintains the other, ideally one-way.
  • the invention differs from the coupled oscillators known elsewhere: indeed, it is not desired, in the implementation of the invention, reversibility of energy transfer between two oscillators, but rather, in the as far as possible a one-way energy transfer from one oscillator to the other.
  • an impulse displacement of the count-rest is carried out.
  • the invention relates to a method for maintaining and regulating a clock resonator mechanism 1 around its natural frequency ⁇ 0.
  • At least one regulating device 2 acting on said resonator mechanism 1 is used with a periodic movement, and said periodic movement imposes a periodic modulation at least of the rest point of said resonator mechanism 1, with a control frequency ⁇ R which is between 0.9 times and 1.1 times the value of an integer multiple of said natural frequency ⁇ 0, said integer being greater than or equal to 2.
  • this periodic movement imposes a periodic modulation of at least the quality factor and the rest point of said resonator mechanism 1, with a regulation frequency ⁇ R which is between 0.9 times and 1.1 times the value of an integer multiple of said natural frequency ⁇ 0, said integer being greater than or equal to 2.
  • this periodic movement imposes a periodic modulation at least of the resonant frequency and the rest point of said resonator mechanism 1, with a regulation frequency ⁇ R which is between 0.9 times and 1.1 times the value of an integer multiple of said natural frequency ⁇ 0, said integer being greater than or equal to 2.
  • this periodic movement imposes a periodic modulation of the resonance frequency and the quality factor and the rest point of said resonator mechanism 1, with a regulation frequency ⁇ R which is between 0.9 times and 1.1 times the value of an integer multiple of said natural frequency ⁇ 0, said integer being greater than or equal to 2.
  • this periodic movement imposes a periodic modulation of the rest point of said resonator mechanism 1, by modulating at least one of the fixing points of said resonator mechanism 1
  • this periodic movement imposes a periodic modulation of the rest point of said resonator mechanism 1, by modulating the fixing position of said resonator mechanism 1 and / or by modulating the balance between the restoring forces acting on said resonator mechanism 1.
  • the regulation frequency ⁇ R is an integer multiple of the natural frequency ⁇ 0, and in particular double.
  • the regulation frequency ⁇ R which is between 1.8 ⁇ 0 and 2.2 ⁇ 0.
  • the periodic movement printed by the regulating mechanism 2 has an amplitude greater than the value defined by the quotient of the amplitude of the resonator 1 by the quality factor of this resonator 1.
  • the invention relates more precisely to the regulation of a clock resonator with local displacement of the spiral.
  • a resonator mechanism 1 comprising at least one sprung-balance assembly 3, whose spiral 4 is held between a stud 5 at a first outer end 6 and a ferrule 7 to a second internal end 8, and at least one regulating device 2 is made to act on at least one point of the spiral 4 and / or on the stud 5 or / and on the shell 7, and / or at least one pivot point of the balance that this balance-spiral assembly 3 comprises.
  • At least one regulating device 2 is operated in maintenance of the oscillation of the resonator mechanism 1 by periodic displacement of the stud 5 and the balance spring 3 is excited by periodically modifying at least one degree of freedom of its point of pitonnage at the level of of the piton 5.
  • At least one such regulating device 2 is made to act on at least the point of attachment of the spiral 4 to the ferrule 7.
  • figure 4 illustrates an example where the ferrule 7 to which is attached the main spring 4 is formed by the serge of a small sprung balance of frequency 2 ⁇ 0.
  • At least one such regulating device 2 is made to act on at least one pivot point of the rocker that the spiral balance 3 comprises.
  • the regulation frequency ⁇ R is twice the natural frequency ⁇ 0.
  • the invention also relates to a clockwork movement comprising at least one resonator mechanism comprising at least one balance-spring assembly. 3, whose hairspring 4 is held between a peg 5 at a first outer end 6 and a shell 7 at a second inner end 8.
  • this movement 10 comprises at least one regulating device 2 periodically modifying the position of the peak 5.
  • the invention also relates to a timepiece 30, in particular a watch, comprising at least one such watch movement 10.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Micromachines (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
EP14155429.5A 2014-02-17 2014-02-17 Frequenzregelung eines resonators einer uhr durch bewegung der spiralfeder Active EP2908186B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CH2012014A CH709277B1 (fr) 2014-02-17 2014-02-17 Procédé d'entretien et de régulation de fréquence d'un mécanisme résonateur d'horlogerie.
EP14155429.5A EP2908186B1 (de) 2014-02-17 2014-02-17 Frequenzregelung eines resonators einer uhr durch bewegung der spiralfeder
EP14184155.1A EP2908189A3 (de) 2014-02-17 2014-09-09 Mechanismus zur Synchronisation von zwei Oszillatoren eines Uhrwerks mit einem Räderwerk
EP14184631.1A EP2908190B1 (de) 2014-02-17 2014-09-12 Kombinierter Resonator mit minimaler Reibung
JP2016566664A JP6224854B2 (ja) 2014-02-17 2015-06-22 ２つの計時器用発振器を１つの歯車列と同期する方法
RU2016150515A RU2680411C1 (ru) 2014-02-17 2015-06-22 Способ синхронизации двух осцилляторов часов с одной зубчатой передачей

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14155429.5A EP2908186B1 (de) 2014-02-17 2014-02-17 Frequenzregelung eines resonators einer uhr durch bewegung der spiralfeder

Publications (2)

Publication Number Publication Date
EP2908186A1 true EP2908186A1 (de) 2015-08-19
EP2908186B1 EP2908186B1 (de) 2018-11-21

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EP14155429.5A Active EP2908186B1 (de) 2014-02-17 2014-02-17 Frequenzregelung eines resonators einer uhr durch bewegung der spiralfeder

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EP (1) EP2908186B1 (de)
CH (1) CH709277B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110520802A (zh) * 2017-03-28 2019-11-29 斯沃奇集团研究和开发有限公司 包括通过校正装置增强其运行的机械机芯的钟表

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH442153A (fr) * 1965-08-13 1967-03-31 Golay Bernard Sa Mouvement d'horlogerie
EP1843227A1 (de) * 2006-04-07 2007-10-10 The Swatch Group Research and Development Ltd. Gekoppelter Resonator für Regelsystem

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH442153A (fr) * 1965-08-13 1967-03-31 Golay Bernard Sa Mouvement d'horlogerie
EP1843227A1 (de) * 2006-04-07 2007-10-10 The Swatch Group Research and Development Ltd. Gekoppelter Resonator für Regelsystem

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
A. H. NAYFEH; D. T. MOOK: "Nonlinear Oscillations", 1977, WILEY-INTERSCIENCE
D. RUGAR; P. GRUTTER: "PRL", vol. 67, 1991, article "Mechanical parametric amplification and thermomechanical noise squeezing", pages: 699
W. B. CASE: "The pumping of a swing from the standing position", AM. J. PHYS., vol. 64, 1996, pages 215

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110520802A (zh) * 2017-03-28 2019-11-29 斯沃奇集团研究和开发有限公司 包括通过校正装置增强其运行的机械机芯的钟表

Also Published As

Publication number Publication date
EP2908186B1 (de) 2018-11-21
CH709277B1 (fr) 2019-11-29
CH709277A2 (fr) 2015-08-28

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