EP2908187B1 - Régulation d'un résonateur d'horlogerie par action sur la longueur active d'un spiral - Google Patents

Régulation d'un résonateur d'horlogerie par action sur la longueur active d'un spiral Download PDF

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Publication number
EP2908187B1
EP2908187B1 EP14155431.1A EP14155431A EP2908187B1 EP 2908187 B1 EP2908187 B1 EP 2908187B1 EP 14155431 A EP14155431 A EP 14155431A EP 2908187 B1 EP2908187 B1 EP 2908187B1
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EP
European Patent Office
Prior art keywords
balance spring
index
pin
movement
regulator device
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
EP14155431.1A
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German (de)
English (en)
French (fr)
Other versions
EP2908187A1 (fr
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
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
Application filed by Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP14155431.1A priority Critical patent/EP2908187B1/fr
Priority to EP14184155.1A priority patent/EP2908189A3/fr
Priority to EP14184631.1A priority patent/EP2908190B1/fr
Priority to CN201510070606.7A priority patent/CN104850000B/zh
Priority to US14/620,430 priority patent/US9354607B2/en
Priority to RU2015105254/12A priority patent/RU2590873C1/ru
Priority to JP2015027458A priority patent/JP5957107B2/ja
Priority to RU2016150515A priority patent/RU2680411C1/ru
Priority to JP2016566664A priority patent/JP6224854B2/ja
Publication of EP2908187A1 publication Critical patent/EP2908187A1/fr
Priority to HK16101512.9A priority patent/HK1213650A1/zh
Application granted granted Critical
Publication of EP2908187B1 publication Critical patent/EP2908187B1/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
    • 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
    • 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
    • G04B18/00—Mechanisms for setting frequency
    • G04B18/02—Regulator or adjustment devices; Indexing devices, e.g. raquettes

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 clockwork movement comprising at least one resonator mechanism comprising at least one balance-sprung assembly, the spiral of which is held between a stud at a first outer end and a ferrule at a second internal 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.
  • EP1843227 discloses a method for maintaining and regulating a clock resonator mechanism around its natural frequency, in which at least one regulating device acting on said resonator mechanism is used with a periodic movement, said periodic movement imposing a modulation periodical of the resting point of said resonator mechanism, 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.
  • FR833085 discloses a modulation of the active length of the spiral spring according to the magnitude of the difference between the number of oscillations of the balance spring and the number of normal oscillations, but this modulation is not with a frequency which is a multiple integer (> 2) of the eigenfrequency.
  • the invention proposes to manufacture a time base as accurate as possible.
  • the invention relates to a method of servicing and regulating a clock resonator mechanism around its natural frequency, in which one implements at least one regulating device acting on said resonator mechanism with a periodic movement, and said periodic movement imposes a periodic modulation at least of the resonance frequency of said resonator mechanism, by imposing at least a modulation of the active length of a spring that includes said mechanism resonator 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.
  • the invention also relates to a clockwork movement comprising at least one resonator mechanism comprising at least one balance-sprung assembly, the spiral of which is held between a stud at a first external end and a ferrule at a second internal end, characterized in that it comprises at least one regulating device arranged for imposing a periodic variation of the active length of said hairspring.
  • 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 to make a mechanical timepiece, including a mechanical watch, as accurate as possible.
  • a parametric resonator system reduces the influence of the exhaust and thus make the watch more accurate.
  • a parametric oscillator uses, for the maintenance of the oscillations, a parametric actuation which consists of varying 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 a integer multiple of the natural frequency of the oscillator system to be regulated, said integer being greater than or equal to 2.
  • This control frequency ⁇ R is preferably multiple integer, in particular double, of the natural frequency ⁇ 0.
  • 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 and V the potential energy and the inertia I ( t ), the 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 or regulator, the active length and therefore the rigidity k (t) of said resonator (1) with a control frequency 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 is an integer multiple, in particular double, of the natural frequency ⁇ 0 of the resonator system to be regulated.
  • all the terms ⁇ (t), I (t) and x 0 (t) vary with a regulation frequency ⁇ R which is preferably an integer multiple, especially double, the natural 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) )].
  • the forcing term f (t) may be introduced by a second maintenance mechanism.
  • the parameters of this equation are the frequency and the term of ⁇ friction.
  • the system oscillates at the frequency ⁇ without amortizing.
  • the principle may be reproduced, in particular but not exclusively, in a timepiece or a watch which comprises a mechanical resonator with a balance-spring, with one end of the spring attached to a ferrule integral with the balance, and the other end attached to a piton.
  • the oscillation can be maintained and the accuracy of the system is notoriously improved.
  • FIG. 1 illustrates the general principle of the invention of harmonic oscillator regulation.
  • the particular object of the invention which relates to the modulation of the active length of a spring that comprises a resonator mechanism, is illustrated by the other figures.
  • 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.
  • 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.
  • this periodic movement imposes a periodic modulation at least of the resonance frequency of the 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 the natural frequency ⁇ 0, this integer being greater than or equal to 2.
  • the periodic movement imposes a periodic modulation at least of the resonant frequency, and the quality factor and / or 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 the natural frequency ⁇ 0, this integer being greater than or equal to 2.
  • the periodic movement imposes a periodic modulation of the resonance frequency of the resonator mechanism 1, acting at least on the rigidity of the resonator mechanism 1.
  • the periodic movement imposes a periodic modulation of the resonance frequency of the resonator mechanism 1, by imposing a modulation of the rigidity of the resonator mechanism 1 and an inertia modulation of the resonator mechanism 1.
  • the periodic movement imposes a periodic modulation of the resonance frequency of the resonator mechanism 1, by imposing at least one modulation of the active length a spring that includes the resonator mechanism 1.
  • the periodic movement imposes a periodic modulation of the resonance frequency of the resonator mechanism 1, by imposing at least one modulation of the active length of a spring that the resonator mechanism 1 comprises, and / or a modulation of the section of a spring that includes the resonator mechanism 1, and / or a modulation of the modulus of elasticity of a return means that comprises the resonator mechanism 1, and / or a modulation of the shape of a return means that has the resonator mechanism 1.
  • the invention as illustrated, relates more particularly to the regulation of a clock resonator with action on the active length of a hairspring.
  • the present invention consists in varying the active length of the hairspring, and therefore its rigidity.
  • the limitation of the active length of a hairspring is known by the use of a pinning mechanism, comprising a racket carrying two pins between which the hairspring passes, the limitation of the active length resulting from the contact of the hairspring with at least one of these pins.
  • a first simple solution is to arrange the pair of racket pins so as to pivot between two different contact positions where the two pins pinch the outer turn of the hairspring to vary the length active, as visible on the figure 2 . (This also gives rise to a slight rotation of the hairspring which can help the self-starting, in this case, the active length is varied in a binary manner and the rest point is modified, so two parameters).
  • a second solution is to equip the hairspring of a structure having a housing adapted to receive at least one pin, or the two pins if the racket has two, this integral structure of the hairspring locks with the pins, as visible on the figure 3 .
  • This variation is binary. It is also possible to change the active length, according to a similar principle, in a number of steps defined by as many non-locking elastic notches on the turn, each arranged to cooperate, or with a single pin, or with a couple of pins classic.
  • Such a structure is known from the document EP 2 434 353 in the name of MONTRES BREGUET SA.
  • a third solution visible on the figure 4 consists in equipping the mechanism with a crank-handle system for actuating the racket, as visible on the figure 4 , where the two pins 11 of the racket 12 each describe an arc, thus changing the active length continuously.
  • a fourth solution allows the variation of the active length continuously with a cam, as visible on the figure 5 .
  • the prestressing of the hairspring and the radial position of the counting point also vary over time.
  • a fifth solution is to vary the active length of the spiral continuously with two flexible blades, positioned on either side of the spiral in the vicinity of the peak, and which pinch its terminal curve, as visible on the figure 6 .
  • a flexible guide system can actuate the two blades from a single movement, as visible on the figure 7 ; in this variant the blades 15 can be elastic or rigid, their ends opposite the pin can be held by springs.
  • magnets can be advantageously used to vary the active length of the hairspring.
  • layers or electrostatic elements may be implemented to vary the active length of the hairspring. It is even conceivable, in a hybrid system environment, to be able to modify the rigidity of a hairspring by covering it partially or completely with a piezoelectric layer activated by a small electronic module.
  • a parametric escapement with a connecting rod-crank system makes it possible to periodically move the racket pin or pins, or the racket itself, or such flexible blades.
  • the excitation at double the frequency can be carried out by a periodic multi-frequency signal, that is to say a superposition of sinusoidal signals, or by a signal square (step-function).
  • a superposition of sinusoidal signals is performed whose frequencies are even multiples of the frequency of the resonator.
  • 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 maintains the other, 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, as far as possible a one-way energy transfer from one oscillator to the other.
  • a continuous and monotonous displacement of the rest-count is also performed.
  • the invention relates to a method of regulating a clock resonator mechanism 1 around its natural frequency ⁇ 0.
  • This method implements at least one regulator device 2 imposing a periodic variation of the active length of said resonator 1.
  • the 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, this integer being greater than or equal to 2.
  • this method is applied to a resonator mechanism 1 comprising at least one balance-hairspring assembly 3, the hairspring 4 of which is held between a peg 5 at a first external end 6 and a shell 7 at a second internal end 8 and at least one regulating device 2 is operated by controlling a periodic variation of the active length of the hairspring 4.
  • the regulation frequency ⁇ R is twice the natural frequency ⁇ 0.
  • the resonator mechanism 1 is equipped with a racking mechanism comprising at least one racquet pin 11, and the length of the spiral 4 is varied in a discrete manner or in a binary manner, according to two lengths without intermediate state between the two lengths.
  • the racking mechanism is equipped with a pivoting racket 12 comprising at least one racquet pin 11, in particular two racket pins 11, and the periodic pivoting of the racket 12 is controlled to periodically change. the points of contact between at least one said pin 11, more particularly the pins 11, and the hairspring 4 to modify the useful length of the hairspring 4.
  • the hairspring 4 is equipped with a structure 13 comprising a housing 130 designed to receive at least one such pin 11, or two pins 11, and at least one pin 11 is moved to accommodate it. in the structure 13 secured to the hairspring 4, which locks with the pin or pins 11.
  • the length of the spiral 4 is varied continuously.
  • the resonator mechanism 1 is equipped with a racking mechanism with a racket 12 comprising at least one racket pin 11, in particular two racket pins 11, and a regulating device 2 comprising a racket 11 is used.
  • crank-crank system for continuously operating the racket 12 and move it.
  • a regulating device 2 comprising a cam 14 is used to continuously modify the useful length of the hairspring 4 by modifying the position along the hairspring 4 of the point of contact between the cam 14 and the hairspring 4. .
  • a regulating device 2 comprising two flexible blades 15 arranged on either side of the hairspring 4, and the flexible blades 15 are supported on the hairspring 4 according to a contact arc 16 of length continuously variable with the end curve 17 of the hairspring 4. More particularly, using a regulating device 2 having a flexible guiding system for actuating the two flexible blades 15 from a single movement.
  • the figure 10 still shows a variant of the figure 4 at least one of the pins is at the outer end of a first frequency resonator double, which performs the coupling. Oscillators can, again, advantageously be superimposed.
  • the figure 11 shows the principle of changing the active length of the hairspring by another double frequency resonator, and where at least one of the pins is located on a pendulum.
  • the systems can be superimposed.
  • the relative amplitude of the modulation of the natural frequency of the spring balance 3 is greater than the inverse of the quality factor of this balance-spring 3.
  • the active length of the spring, in particular of the hairspring may, again, be modified by a local modification of the rigidity of the spring, in particular of the hairspring, obtained by the use of magnets and / or electrostatic component layers, in particular electrets. .
  • the invention also relates to a watchmaking movement comprising at least one watchmaking resonator mechanism comprising at least one balance-spring assembly 3, the spiral 4 of which is held between a stud 5 at a first external end 6 and a ferrule 7 at a second internal end 8.
  • This movement 10 comprises at least one regulating device 2 controlling a periodic variation of the active length of the hairspring 4.
  • this movement 10 comprises a racquet racket pin mechanism 11 comprising a pivoting racket 12 comprising at least one racquet pin 11, in particular two racquet pins 11, and the regulating device 2 controls the periodic pivoting of the racket. 12 to periodically change the contact points between at least one pin 11 and the hairspring 4 to modify the useful length of the hairspring 4.
  • this movement 10 comprises a racking mechanism comprising at least one racket pin 11, in particular two racket pins 11, and the hairspring 4 comprises a structure 13 comprising a housing 130 designed to receive at least one pin 11, or the two pins 11 if the racket has two, and the regulating device 2 controls the periodic movement of at least one of the pins 11 for the housed in the structure 13 secured to the hairspring 4, which locks with at least one pin 11.
  • this movement 10 comprises a racket racking mechanism 11 comprising a racket 12 comprising at least one racquet pin 11, in particular two racquet pins 11, and the regulating device 2 comprises a crank-handle system for actuating continuously racket 12 and move it.
  • this movement 10 comprises a regulating device 2 comprising a cam 14 to continuously modify the useful length of the hairspring 4 by modifying the position along the hairspring 4 of the point of contact between the cam 14 and the hairspring 4.
  • this movement 10 comprises a regulating device 2 comprising two flexible blades 15 arranged on either side of the hairspring 4, and which presses on the hairspring 4 the flexible blades 15 in a contact arc 16 of continuously variable length with the end curve 17 of the hairspring 4. More particularly, this regulator device 2 comprises a flexible guiding system for actuating the two flexible blades 15 from a single movement.
  • the invention also relates to a timepiece 30 comprising at least one such watch movement 10.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Springs (AREA)
  • Micromachines (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP14155431.1A 2014-02-17 2014-02-17 Régulation d'un résonateur d'horlogerie par action sur la longueur active d'un spiral Active EP2908187B1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP14155431.1A EP2908187B1 (fr) 2014-02-17 2014-02-17 Régulation d'un résonateur d'horlogerie par action sur la longueur active d'un spiral
EP14184155.1A EP2908189A3 (fr) 2014-02-17 2014-09-09 Mécanisme de synchronisation de deux oscillateurs d'horlogerie avec un rouage
EP14184631.1A EP2908190B1 (fr) 2014-02-17 2014-09-12 Résonateur combiné à frottement minimal
CN201510070606.7A CN104850000B (zh) 2014-02-17 2015-02-10 钟表谐振器频率调节的方法、机芯及包括所述机芯的钟表
US14/620,430 US9354607B2 (en) 2014-02-17 2015-02-12 Frequency regulation of a timepiece resonator via action on the active length of a balance spring
JP2015027458A JP5957107B2 (ja) 2014-02-17 2015-02-16 ヒゲゼンマイの有効長さに対する作用による時計の共振器の周波数調節
RU2015105254/12A RU2590873C1 (ru) 2014-02-17 2015-02-16 Регулирование частоты колебательной системы часов путем воздействия на активную длину пружины баланса
RU2016150515A RU2680411C1 (ru) 2014-02-17 2015-06-22 Способ синхронизации двух осцилляторов часов с одной зубчатой передачей
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
HK16101512.9A HK1213650A1 (zh) 2014-02-17 2016-02-11 鐘錶諧振器頻率調節的方法、機芯及包括所述機芯的鐘錶

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14155431.1A EP2908187B1 (fr) 2014-02-17 2014-02-17 Régulation d'un résonateur d'horlogerie par action sur la longueur active d'un spiral

Publications (2)

Publication Number Publication Date
EP2908187A1 EP2908187A1 (fr) 2015-08-19
EP2908187B1 true EP2908187B1 (fr) 2016-10-19

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EP14155431.1A Active EP2908187B1 (fr) 2014-02-17 2014-02-17 Régulation d'un résonateur d'horlogerie par action sur la longueur active d'un spiral

Country Status (6)

Country Link
US (1) US9354607B2 (zh)
EP (1) EP2908187B1 (zh)
JP (1) JP5957107B2 (zh)
CN (1) CN104850000B (zh)
HK (1) HK1213650A1 (zh)
RU (1) RU2590873C1 (zh)

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EP2908184B1 (fr) * 2014-02-17 2017-10-18 The Swatch Group Research and Development Ltd. Procédé d'entretien et de régulation d'un résonateur d'horlogerie
KR101915861B1 (ko) * 2016-12-22 2018-11-06 주식회사 한화 시한조정장치의 주파수 교정시스템 및 방법
JP6826673B2 (ja) * 2017-03-28 2021-02-03 ザ・スウォッチ・グループ・リサーチ・アンド・ディベロップメント・リミテッド 調整デバイスにより動作が強化されるムーブメントを備えた機械式計時器
CN110520802B (zh) * 2017-03-28 2021-12-07 斯沃奇集团研究和开发有限公司 包括通过调节装置增强其运行的机械机芯的钟表
CH714480A2 (fr) 2017-12-20 2019-06-28 Swatch Group Res & Dev Ltd Dispositif de réglage autonome de la longueur active d'un spiral.
EP3629103B1 (fr) * 2018-09-28 2021-05-12 The Swatch Group Research and Development Ltd Pièce d'horlogerie comprenant un mouvement mécanique dont la marche est régulée par un dispositif électronique
EP3926412A1 (fr) * 2020-06-16 2021-12-22 Montres Breguet S.A. Mécanisme régulateur d'horlogerie
EP4009115A1 (fr) * 2020-12-02 2022-06-08 Omega SA Ressort-spiral pour mécanisme résonateur d horlogerie muni de moyens d'ajustement de la rigidité

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Also Published As

Publication number Publication date
JP5957107B2 (ja) 2016-07-27
CN104850000A (zh) 2015-08-19
US9354607B2 (en) 2016-05-31
RU2590873C1 (ru) 2016-07-10
HK1213650A1 (zh) 2016-07-08
JP2015152603A (ja) 2015-08-24
US20150234352A1 (en) 2015-08-20
CN104850000B (zh) 2017-07-28
EP2908187A1 (fr) 2015-08-19

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