EP2570869B1 - Pièce d'horlogerie à oscillateurs couplés en mode chronographe - Google Patents

Pièce d'horlogerie à oscillateurs couplés en mode chronographe Download PDF

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Publication number
EP2570869B1
EP2570869B1 EP11181505.6A EP11181505A EP2570869B1 EP 2570869 B1 EP2570869 B1 EP 2570869B1 EP 11181505 A EP11181505 A EP 11181505A EP 2570869 B1 EP2570869 B1 EP 2570869B1
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EP
European Patent Office
Prior art keywords
oscillator
timepiece
frequency
gear train
time
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
EP11181505.6A
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German (de)
English (en)
French (fr)
Other versions
EP2570869A1 (fr
Inventor
Jean-Luc Helfer
Thierry Hessler
Thierry Conus
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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Filing date
Publication date
Application filed by Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP11181505.6A priority Critical patent/EP2570869B1/fr
Priority to CH01530/11A priority patent/CH705493B1/fr
Priority to US13/609,786 priority patent/US8905630B2/en
Priority to CN201210342577.1A priority patent/CN102998967B/zh
Priority to RU2012139632/12A priority patent/RU2598299C2/ru
Priority to JP2012203954A priority patent/JP5486059B2/ja
Publication of EP2570869A1 publication Critical patent/EP2570869A1/fr
Priority to HK13110950.2A priority patent/HK1183713A1/xx
Application granted granted Critical
Publication of EP2570869B1 publication Critical patent/EP2570869B1/fr
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Anticipated expiration legal-status Critical

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • 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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0823—Watches or clocks with stop devices, e.g. chronograph with couplings between the chronograph mechanism and the base movement

Definitions

  • the invention relates to a timepiece with oscillators coupled in chronograph mode and such a timepiece comprising two oscillators intended to display at least one value less than or equal to the second with a better resolution and / or a better accuracy .
  • the document EP 2,221,676 describes a timepiece comprising a chronograph system independent of the time display system but connected by the same barrel.
  • the document EP 2141 555 describes a timepiece comprising two resonators of the sprung-balance type whose spirals are permanently coupled by a third spiral helical type.
  • One of the two resonators is provided with an exhaust device for receiving the energy of a cylinder by a single wheel.
  • the object of the present invention is to overcome all or part of the disadvantages mentioned above by proposing a timepiece capable of displaying the time or time measured with a system. Chronograph with better resolution while maintaining the usual robustness for a mechanical watch, reduced power consumption and minimal drift between the time display and the measured time display even if the latter is greater than one minute .
  • the invention relates to a timepiece comprising a first oscillator oscillating at a first frequency and connected by a first gear to a power source to display the time and a chronograph system having a second gear connected the first gear via a clutch device for selectively measuring a time characterized in that the chronograph system further comprises a second oscillator connected to the second gear which oscillates at a second frequency and in that the second wheel is connected to the first gear by elastic coupling means for synchronizing the operation of the two oscillators with the same energy source when the clutch device allows said measurement of a time.
  • the timepiece according to the invention is capable of displaying the time, and / or the time measured with a chronograph system, with a better resolution and / or a better accuracy while guaranteeing a great robustness, a low consumption and a slight drift between the display of the time and the display of the measured time even if the latter is greater than one minute.
  • the invention relates to a timepiece 1 comprising a first resonator 3 and connected by a first gear 5 via a first escapement 7 to an energy source 9.
  • the first resonator 3 and the first escapement 7 thus form a first oscillator 15 oscillating at a first frequency f 1 to display the time.
  • the timepiece 1 also comprises a chronograph system 51 comprising a second gear 25 connected to the first gear 5 via a clutch device 44 for selectively measuring a time.
  • the chronograph system 51 further comprises a second oscillator 35 connected to the second gear 25 and which oscillates at a second frequency f 2 .
  • the second gear train 25 is advantageously connected to the first gear train 5 by elastic coupling means 41 in order to synchronize the operation of the two oscillators 15, 35 with the aid of the same source. energy 9 when the clutch device 44 allows said measurement of a time.
  • the energy source 9 is preferably a barrel, that is to say a source of mechanical energy accumulation.
  • the second oscillator 35 comprises a second resonator 23 connected to the second gear 25 via a second escapement 27.
  • the elastic coupling means 41 are formed by a spring 43 connecting a wheel of the first gear train 5 with another of the second gear train 25.
  • the elastic coupling means 41 connect, preferably according to the invention, the second wheels respectively of the first gear 5 and the second gear 25 when the clutch device 44 is in its coupled position, that is to say that it allows the total transmission of the torque it receives.
  • a double wheel 42 is used. As better visible at the figure 2 , it is formed by a first plate 45 connected via a reference 46 of the clutch device 44 to the first gear 5.
  • the double wheel 42 further comprises a second plate 47 connected directly or indirectly to the second wheel 25 of the chronograph system 51.
  • two boards 45, 47 are integral with an axle 48 respectively in a crazy manner and in a fixed manner.
  • the spring 43 of the elastic coupling means 41 is preferably mounted between the fastener 49 fixed on the stretcher of the board 45 and the flange 50 of the axis 48. It is therefore understood that the boards 45 and 47, and incidentally, the workings 5 and 25 may be angularly offset by the elastic coupling of the spring 43 when the clutch device 44 is in its coupled position.
  • the time display that is to say the hours, the minutes and possibly the seconds, is made from the first wheel 5. While the display of the measured time by the chronograph system 51 is, preferably, made from the second wheel 25.
  • the first f 1 and second f 2 frequencies are identical or not.
  • the first and second frequencies f 1 , f 2 are identical and preferably greater than 5 Hz to display with a better resolution and / or a better accuracy both the time and the measured time.
  • the frequencies f 1 , f 2 may, for example, be equal to 10 Hz or 50 Hz to respectively display 1/20 or 1/100 of a second.
  • the first frequency f 1 is higher than the second frequency f 2 in order to display the time with a better resolution and / or a better accuracy.
  • the first frequency f 1 is at least 10 Hz and the second frequency f 2 is preferably between 1 and 5 Hz.
  • the second of the measured time is incremented by a single step per second, that is to say that the second frequency f 2 is equal to 1 Hz, "in the manner" of a quartz watch.
  • the first frequency f 1 is lower than the second frequency f 2 in order to display the measured time with better resolution and / or better accuracy.
  • the second frequency f 2 is at least 10 Hz and the first frequency f 1 is preferably between 3 and 5 Hz.
  • the oscillator 15 is selected from the low frequency type and called the first oscillator.
  • the second oscillator will be the oscillator 35 of the high frequency type which will synchronize with the low frequency oscillator.
  • the second oscillator 35 is chosen with a strong anisochronism as a function of the amplitude, described by the slope of anisochronism ⁇ , as well as by the amplitude AT 2 0 at which the march is null.
  • the first oscillator 15 always has a substantially zero step by slightly varying its amplitude.
  • the simulations show the evolution of the two oscillators 15, 35, that is to say their amplitudes and their phase shift state over time and thus make it possible to check the possibility of synchronization or not of the second oscillator 35 on the first oscillator 15.
  • the second oscillator 35 is constructed so that its march is zero when it oscillates at an amplitude AT 2 0 , positive when it oscillates at an amplitude greater than AT 2 0 and negative when it oscillates at a lower amplitude than AT 2 0 .
  • the elastic coupling means 41 are constructed so that the torque transmitted to the second wheel 25 remains constant if the two wheels 5, 25 rotate at the same speed, decreases if the second wheel 25 advances faster than the first wheel 5 (the spring 43 disarms) and increases if the second gear 25 advances less rapidly than the first gear 5 (the spring 43 is armed).
  • the timepiece will always evolve towards the stable situation where the second oscillator 35 oscillates at the amplitude AT 2 0 and in which the spring 43 transmits, to the second wheel 25, the torque M 2 necessary to maintain the second oscillator 35 at the amplitude AT 2 0 .
  • the second oscillator 35 receives a torque less than M 2 , its amplitude decreases, that is to say has a smaller amplitude than AT 2 0 . As explained above, its operation becomes negative, that is to say that the second oscillator 35 is delayed relative to the first oscillator 5.
  • the second wheel 25 will rotate more slowly than the first wheel 5 by arming the coupling spring 43, that is to say by increasing the torque transmitted to the second wheel 25. Therefore, the increasing torque, the amplitude of the second oscillator 25 is corrected automatically. It is therefore noted that both the torque and the amplitude of the second oscillator 35 synchronize structurally with the stable torque M 2 and the stable amplitude AT 2 0 .
  • the amplitude of the second oscillator 35 becomes greater than the value AT 2 0 , which means that the step of the second oscillator 35 will be positive.
  • the second gear 25 is therefore ahead of the first gear 5 by disarming the spring 43. Therefore, the torque on the second gear 25 will decrease towards the stable torque M 2 and, the amplitude of the second oscillator 35, soft again towards stable amplitude AT 2 0 .
  • the K. ⁇ product be kept identical to have the same stabilization time in the continuous approximation.
  • increasing K makes it possible to reduce the amplitude and torque fluctuations (thus preventing the pair from being canceled).
  • it also increases the maximum state difference before stabilization, as well as instantaneous walking, which can become extreme. We must therefore find a compromise between these two effects.
  • FIGS. 3 and 4 are simulations performed as an example of execution.
  • f 1 4 Hz
  • f 2 10 Hz
  • f 2 50 Hz
  • Part A of each figure corresponds to the amplitude fraction of each oscillator relative to the reference amplitude if it received the entire torque of the energy source.
  • the amplitude AT 2 0 chosen from the second oscillator is about 1 ⁇ 3.
  • each oscillator stabilizes at its synchronized amplitude.
  • Part B of each figure corresponds to the fraction of torque that each oscillator receives from the energy source. Note that for the examples of the figures the proportion of torque chosen for the second oscillator is about 10%. Thus at the end of respectively 2 and 1.5 seconds, each oscillator receives in a stabilized manner its proportion of torque.
  • Part C of each figure corresponds to the operation of the second oscillator. We note that after 5.5 and 2 seconds respectively, the second oscillator stabilizes around its zero step.
  • part D of each figure corresponds to the difference of state in seconds between each oscillator. We note that after 5 and 2 seconds respectively, the difference stabilizes at its zero value.
  • the timepiece according to the invention is capable of displaying the time, and / or the time measured with a chronograph system, with a better resolution and / or a better accuracy while guaranteeing a great robustness, a consumption low and a minimal drift between the display of the time and the display of the measured time even if the latter is greater than one minute.
  • the second oscillator preferably comprises a quality factor lower than that of the first oscillator and, preferably, less than 100 to obtain a faster stabilization, that is to say typically less than 2 seconds.
  • a second clutch can be mounted on the wheel hours of the first gear 5 to avoid the addition of gearing in the second gear 25 to display the hours of the measured time. It is therefore understood that the second clutch would belong to the clutch device 44 and would trigger at the same time.
  • the two oscillators being synchronized, the display of the hours would increment also in a synchronized manner.
  • first oscillator is of the high frequency type
  • the display of the time could be limited to hours and minutes from the first gear 5 in order to limit the propagation of couples induced by any shock at the high frequency oscillator.
  • a second would then be displayed preferentially only on the second wheel 25.
  • first and / or second oscillator is of the high frequency type, that is to say greater than or equal to 5 Hz
  • a Clifford type oscillator can be used (see for example the document CH386344 ). While when they have a frequency between 1 and 5 Hz, they will preferably be of the balance spring - spiral and Swiss lever escapement.
  • the elastic coupling means can not be limited to a double wheel 42 cooperating with a spring 43 as illustrated in FIGS. figures 1 and 2 .
  • Other elastic coupling means can be envisaged, for example those disclosed in the document PCT / EP2011 / 061244 .
  • the second oscillator may comprise a weak anisochronism around the equilibrium amplitude and a strong anisochronism far from the amplitude of equilibrium, or vice versa.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Electric Clocks (AREA)
EP11181505.6A 2011-09-15 2011-09-15 Pièce d'horlogerie à oscillateurs couplés en mode chronographe Active EP2570869B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP11181505.6A EP2570869B1 (fr) 2011-09-15 2011-09-15 Pièce d'horlogerie à oscillateurs couplés en mode chronographe
CH01530/11A CH705493B1 (fr) 2011-09-15 2011-09-15 Pièce d'horlogerie à oscillateurs couplés en mode chronographe.
US13/609,786 US8905630B2 (en) 2011-09-15 2012-09-11 Timepiece with coupled oscillators in chronograph mode
RU2012139632/12A RU2598299C2 (ru) 2011-09-15 2012-09-14 Часы с соединенными осцилляторами в режиме хронографа
CN201210342577.1A CN102998967B (zh) 2011-09-15 2012-09-14 具有在计时模式下联接在一起的振荡器的钟表
JP2012203954A JP5486059B2 (ja) 2011-09-15 2012-09-18 クロノグラフモードにおいて連結した振動体を備える時計
HK13110950.2A HK1183713A1 (en) 2011-09-15 2013-09-25 Timepiece with coupled oscillators in chronograph mode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11181505.6A EP2570869B1 (fr) 2011-09-15 2011-09-15 Pièce d'horlogerie à oscillateurs couplés en mode chronographe

Publications (2)

Publication Number Publication Date
EP2570869A1 EP2570869A1 (fr) 2013-03-20
EP2570869B1 true EP2570869B1 (fr) 2016-04-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11181505.6A Active EP2570869B1 (fr) 2011-09-15 2011-09-15 Pièce d'horlogerie à oscillateurs couplés en mode chronographe

Country Status (7)

Country Link
US (1) US8905630B2 (ru)
EP (1) EP2570869B1 (ru)
JP (1) JP5486059B2 (ru)
CN (1) CN102998967B (ru)
CH (1) CH705493B1 (ru)
HK (1) HK1183713A1 (ru)
RU (1) RU2598299C2 (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108693758A (zh) * 2017-03-30 2018-10-23 斯沃奇集团研究和开发有限公司 具有动力储备延长装置的机芯

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140002215A1 (en) * 2012-06-29 2014-01-02 Siemens Industry, Inc. Electrical contact apparatus, assemblies, and methods of operation
EP2874023A1 (fr) * 2013-11-13 2015-05-20 ETA SA Manufacture Horlogère Suisse Pièce d'horlogerie comportant un découplage entre les moyens de transmission d'énergie et les moyens du comptage
EP2995999B1 (fr) * 2014-09-09 2017-12-13 The Swatch Group Research and Development Ltd. Synchronisation de résonateurs d'horlogerie
CH711928A2 (fr) * 2015-12-18 2017-06-30 Montres Breguet Sa Oscillateurs couplés d'horlogerie.
EP3770695B1 (fr) 2019-07-23 2022-01-12 Omega SA Stop-cage d'horlogerie a lame d'arrêt de cage

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB932265A (en) 1961-06-01 1963-07-24 Horstmann Gear Co Ltd Synchronised magnetic escapements
JPH11183652A (ja) * 1997-12-22 1999-07-09 Seiko Instruments Inc クロノグラフ時計
DE60225779T2 (de) * 2002-02-01 2009-06-18 Tag Heuer S.A. Vorrichtung mit Uhrwerk und Chronographenmodul
CN100538556C (zh) * 2004-04-15 2009-09-09 蒙特雷布勒盖股份有限公司 包括至少两个陀飞轮的手表
ATE470890T1 (de) * 2005-03-30 2010-06-15 Montres Breguet Sa Uhr mit mindenstens zwei reguliersystemen
EP1843227A1 (fr) * 2006-04-07 2007-10-10 The Swatch Group Research and Development Ltd. Résonateur couplé système réglant
DE602008006057D1 (de) 2008-07-04 2011-05-19 Swatch Group Res & Dev Ltd Gekoppelte Resonatoren für Uhr
CH699081A2 (fr) * 2008-07-04 2010-01-15 Swatch Group Res & Dev Ltd Résonateurs couplés pour pièce d'horlogerie.
ATE517373T1 (de) * 2009-02-24 2011-08-15 Montres Breguet Sa Uhr bestehend aus einem chronographen und einem uhrwerk
CH700747B1 (fr) * 2009-04-09 2014-07-31 Rudis Sylva S A Oscillateur mécanique pour mouvement horloger.
CH702062B1 (fr) * 2009-10-26 2022-01-31 Mft Dhorlogerie Audemars Piguet Sa Organe régulateur comportant au moins deux balanciers, un mouvement de montre ainsi qu'une pièce d'horlogerie comportant un tel organe.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108693758A (zh) * 2017-03-30 2018-10-23 斯沃奇集团研究和开发有限公司 具有动力储备延长装置的机芯

Also Published As

Publication number Publication date
EP2570869A1 (fr) 2013-03-20
CN102998967B (zh) 2015-06-10
RU2012139632A (ru) 2014-03-20
CN102998967A (zh) 2013-03-27
JP2013064737A (ja) 2013-04-11
CH705493B1 (fr) 2019-04-30
HK1183713A1 (en) 2014-01-03
JP5486059B2 (ja) 2014-05-07
US8905630B2 (en) 2014-12-09
RU2598299C2 (ru) 2016-09-20
US20130070568A1 (en) 2013-03-21
CH705493A2 (fr) 2013-03-15

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