EP2309344B1 - Verfahren zur Veränderung der Oszillationsfrequenz eines Uhrwerks - Google Patents

Verfahren zur Veränderung der Oszillationsfrequenz eines Uhrwerks Download PDF

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Publication number
EP2309344B1
EP2309344B1 EP11000483A EP11000483A EP2309344B1 EP 2309344 B1 EP2309344 B1 EP 2309344B1 EP 11000483 A EP11000483 A EP 11000483A EP 11000483 A EP11000483 A EP 11000483A EP 2309344 B1 EP2309344 B1 EP 2309344B1
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EP
European Patent Office
Prior art keywords
frequency
anchor
escapement
distance
rotation
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Active
Application number
EP11000483A
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English (en)
French (fr)
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EP2309344A3 (de
EP2309344A2 (de
Inventor
Christophe Gigandet
Francisco Dias
Armin Behrend
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.)
Chopard Technologies SA
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Chopard Technologies SA
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Publication date
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Publication of EP2309344A3 publication Critical patent/EP2309344A3/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
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • G04B15/08—Lever escapements
    • 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
    • G04B18/00—Mechanisms for setting frequency
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D1/00—Gripping, holding, or supporting devices
    • G04D1/0092—Devices for positioning and sorting of the components

Definitions

  • the present invention relates to the field of mechanical watch movements.
  • Mechanical watch movements generally comprise, in particular, a barrel housing a mainspring, a train driven by the barrel and whose axes of some of the wheels carry indicator hands, a regulating member such as a balance-spring and, between the gear train and the regulating member, an escapement for maintaining the oscillations of the regulating member.
  • the exhaust includes an escape wheel driven by the gear train and a member, such as an anchor, located between the escape wheel and the regulating member.
  • the watch movements currently found on the market currently have a regulating organ oscillating at a frequency of 4 Hz and a 20-tooth escapement wheel. It has also been marketed, under the trademark Zenith EI Primero, a movement whose regulating organ oscillates at a frequency of 5 Hz and whose escape wheel includes, to the applicant's knowledge, 21 teeth.
  • the present invention aims at providing a method for changing the oscillation frequency of a watch movement allowing said movement of operate at a high frequency without the aforementioned disadvantages.
  • a method for changing the oscillation frequency of a watch movement comprising a first regulating member having an oscillation frequency f1 and a first escapement for sustaining the oscillations of the first regulating member, the first escapement comprising a first escape wheel with N1 teeth and a first anchor, the first regulating member - first escapement defining a first center distance formed by the distance between the center of rotation of the first escape wheel and the center of rotation of the first anchor and a second center distance constituted by the distance between the center of rotation of the first anchor and the center of rotation of the first regulating member, said method being characterized in that said first regulating member - first escapement assembly is replaced by an assembly comprising a second regulating member having an oscillation frequency f2 and a second escapement t to maintain the oscillations of the second regulating member, the second escapement comprising a second escape wheel with N2 teeth and a second anchor, the second regulating member - second escapement defining a third center distance constituted by the distance between the
  • the frequency of the regulating member is increased without increasing the ratio between the number of teeth of the escape wheel and said frequency, which ratio may be equal to a usual value.
  • the angular speed of rotation of the escape wheel therefore remains unchanged, allowing the gear train and more generally the entire movement with the exception of the regulating member and the exhaust to remain unchanged.
  • the power reserve is also preserved.
  • Said ratios between the number of teeth N1 and the frequency f1, measured in Hertz, and between the number of teeth N2 and the frequency f2, measured in Hertz, are typically substantially equal to 5.
  • the frequency f2 is at least equal to at about 5 Hz, preferably at least about 6 Hz, more preferably at least about 8 Hz, more preferably at least about 10 Hz.
  • tooth means a tooth of the escape wheel having a functional role, that is to say, in the case of an anchor escapement, a tooth which cooperates with the pallets of the anchor.
  • a traditional watch movement 1 comprises in particular a motor spring (not shown) housed in a barrel 2, a gear train 3 driven by the barrel 2, a regulating member of the balance-spring type 4 (of which only the balance is shown) and, the gear train 3 and the balance spring 4, an exhaust 5.
  • the exhaust 5 comprises an escape wheel 6 and a exhaust pinion 7 which is secured to the wheel 6 and which meshes with a second wheel 8 of the train 3 to drive the wheel 6.
  • the exhaust 5 further comprises a member 9, for example an anchor, which cooperates with the escape wheel 6 and with a plate pin 10 secured to the axis of the sprung balance 4 to maintain the oscillations of the sprung balance 4.
  • the respective axes of some of the wheels of the train 3, namely the second wheel 8 , a minute wheel and an hour wheel (not shown), are intended to carry indicators indicating seconds, minutes and hours, typically hands, moving over a watch face. All these elements are well known to those skilled in the art and will not be described in more detail.
  • One known way to increase the oscillation frequency of a balance spring is to increase the stiffness of the balance spring and / or to reduce the moment of inertia of the balance.
  • To increase the stiffness of the hairspring it can for example shorten or increase its section.
  • the decrease of the moment of inertia of the pendulum is obtained for example by lightening the balance and / or decreasing its radius of gyration.
  • the increase in the frequency of the sprung balance is accompanied by an increase in the number of teeth of the escape wheel.
  • Current manufacturing techniques allow the realization of wheels with a large number of teeth.
  • the figure 2 shows an escape wheel 11 and an exhaust anchor 12 forming part of an exhaust according to a first embodiment of the invention.
  • the escape wheel 11 has 50 teeth and the exhaust of which it is part is intended to operate with a sprung balance oscillating at a frequency of 10 Hz (72000 vibrations per hour).
  • the figure 3 shows an escape wheel 13 and an exhaust anchor 14 forming part of an exhaust according to a second embodiment of the invention.
  • the escape wheel 13 has 40 teeth and the exhaust of which it is part is intended to operate with a sprung balance oscillating at a frequency of 8 Hz (57600 vibrations per hour).
  • anchors 12 and 14 illustrated at Figures 2 and 3 may be identical although they cooperate with different exhaust wheels.
  • the ratio between the number of teeth of the escape wheel and the frequency of the spring balance is equal to 5, which is the value that is commonly encountered in the current movements.
  • the angular speed of rotation of the escape wheel is therefore the same as in the usual movements. It follows that a movement including one of the exhausts described above and the balance sprung-balance may have a conventional wheel, for example the wheel 3 illustrated in the figure 1 .
  • the distances from the exhaust are preserved from one exhaust to the other and are equal to usual values.
  • the center distance d3 of the escape wheel 11 and the anchor 12 is equal to the center distance d5 of the escape wheel 13 and the anchor 14 and to the center distance d1 of the usual escape wheel 6 and the usual anchor 9.
  • the center distance d4 of the anchor 12 and corresponding balance is equal to the center distance d6 of the anchor 14 and the corresponding balance and to the spacing d2 of the usual anchor 9 and the usual balance 4. Keeping the same spacings from one exhaust to the other, it facilitates the interchangeability of the exhaust assembly - regulating member in a given movement and is allowed to movements including respectively escapements as described above with the corresponding balance springs to have identical plates and bridges.
  • the escapement according to the invention is a Swiss lever escapement.
  • the present invention could be applied to other types of anchor escapements and more generally to other types of escapement.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Micromachines (AREA)
  • Springs (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Gears, Cams (AREA)

Claims (6)

  1. Verfahren zur Veränderung der Oszillationsfrequenz eines Uhrwerks, das ein erstes Regulierorgan (4), das eine Oszillationsfrequenz f1 aufweist, und eine erste Hemmung (5) zum Aufrechterhalten der Oszillationen des ersten Regulierorgans umfasst, wobei die erste Hemmung ein erstes Hemmungsrad (6) mit N1 Zähnen und einen ersten Anker (9) umfasst, wobei die Baugruppe aus dem ersten Regulierorgan und der ersten Hemmung einen ersten Achsabstand (d1), der durch den Abstand zwischen dem Drehpunkt des ersten Hemmungsrads (6) und dem Drehpunkt des ersten Ankers (9) gebildet ist, und einen zweiten Achsabstand (d2) abgrenzt, der durch den Abstand zwischen dem Drehpunkt des ersten Ankers (9) und dem Drehpunkt des ersten Regulierorgans (4) gebildet ist, wobei das Verfahren dadurch gekennzeichnet ist, dass die Baugruppe aus dem ersten Regulierorgan und der ersten Hemmung durch eine Baugruppe ersetzt wird, die ein zweites Regulierorgan, das eine Oszillationsfrequenz f2 aufweist, und eine zweite Hemmung (11, 12) zum Aufrechterhalten der Oszillationen des zweiten Regulierorgans umfasst, wobei die zweite Hemmung ein zweites Hemmungsrad (11) mit N2 Zähnen und einen zweiten Anker (12) umfasst, wobei die Baugruppe aus dem zweiten Regulierorgan und der zweiten Hemmung einen dritten Achsabstand (d3), der durch den Abstand zwischen dem Drehpunkt des zweiten Hemmungsrads (11) und dem Drehpunkt des zweiten Ankers (12) gebildet ist, und einen vierten Achsabstand (d4) abgrenzt, der durch den Abstand zwischen dem Drehpunkt des zweiten Ankers (12) und dem Drehpunkt des zweiten Regulierorgans gebildet ist, und dadurch, dass die Frequenz f2 größer ist als die Frequenz f1, dass das Verhältnis zwischen N2 und f2 im Wesentlichen gleich dem Verhältnis zwischen N1 und f1 ist, dass der dritte Achsabstand (d3) im Wesentlichen gleich dem ersten Achsabstand (d1) ist und dass der vierte Achsabstand (d4) im Wesentlichen gleich dem zweiten Achsabstand (d2) ist.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Verhältnisse zwischen der Anzahl der Zähne N1 und der Frequenz f1, die in Hertz gemessen wird, und zwischen der Anzahl der Zähne N2 und der Frequenz f2, die in Hertz gemessen wird, im Wesentlichen gleich 5 sind.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Frequenz f2 mindestens gleich ungefähr 5 Hz ist.
  4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die Frequenz f2 mindestens gleich ungefähr 6 Hz ist.
  5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass die Frequenz f2 mindestens gleich ungefähr 8 Hz ist.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass die Frequenz f2 mindestens gleich ungefähr 10 Hz ist.
EP11000483A 2007-12-27 2007-12-27 Verfahren zur Veränderung der Oszillationsfrequenz eines Uhrwerks Active EP2309344B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070025149 EP2075651B1 (de) 2007-12-27 2007-12-27 Uhrwerk, das ein Regulierorgan mit erhöhter Oszillationsfrequenz umfasst

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP07025149.1 Division 2007-12-27

Publications (3)

Publication Number Publication Date
EP2309344A2 EP2309344A2 (de) 2011-04-13
EP2309344A3 EP2309344A3 (de) 2011-05-04
EP2309344B1 true EP2309344B1 (de) 2012-05-09

Family

ID=39731735

Family Applications (3)

Application Number Title Priority Date Filing Date
EP20070025149 Active EP2075651B1 (de) 2007-12-27 2007-12-27 Uhrwerk, das ein Regulierorgan mit erhöhter Oszillationsfrequenz umfasst
EP11000483A Active EP2309344B1 (de) 2007-12-27 2007-12-27 Verfahren zur Veränderung der Oszillationsfrequenz eines Uhrwerks
EP11000484A Active EP2309345B1 (de) 2007-12-27 2007-12-27 Herstellungsverfahren von Uhrwerken, die mit unterschiedlichen Frequenzen funktionieren

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP20070025149 Active EP2075651B1 (de) 2007-12-27 2007-12-27 Uhrwerk, das ein Regulierorgan mit erhöhter Oszillationsfrequenz umfasst

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11000484A Active EP2309345B1 (de) 2007-12-27 2007-12-27 Herstellungsverfahren von Uhrwerken, die mit unterschiedlichen Frequenzen funktionieren

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EP (3) EP2075651B1 (de)
DE (1) DE602007013587D1 (de)
HK (3) HK1127647A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2363762B1 (de) 2010-03-04 2017-11-22 Montres Breguet SA Uhr mit einem mechanischen Hochfrequenzuhrwerk
CH703575B1 (fr) * 2011-03-22 2015-12-15 Lvmh Swiss Mft Sa Ancre d'échappement pour montre-bracelet mécanique et assortiment comportant une telle ancre.
CH705970B1 (fr) * 2012-01-09 2017-09-29 Lvmh Swiss Mft Sa Mécanisme d'horlogerie comprenant un oscillateur vibrant.
US11029649B2 (en) * 2016-03-14 2021-06-08 LVHM Swiss Manufactures SA Device for timepiece, clockwork movement and timepiece comprising such a device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH174391A (fr) * 1934-05-22 1935-01-15 Schild Sa A Mouvement de montre ancre, de forme et à seconde.
FR892533A (fr) * 1942-12-03 1944-04-11 Electro App Balancier réglable
CH358036A (fr) * 1956-06-21 1961-10-31 Theurillat Xavier Echappement à ancre à sauts libres pour mouvements d'horlogerie
CH408786A (fr) * 1962-06-22 1965-11-15 Soc D Fabriques De Spiraux Reu Procédé de réglage d'un système balancier-spiral
CH1517065A4 (fr) 1965-11-03 1967-04-15 Girard Perregaux Et Cie S A Montre portative
GB1409572A (en) * 1971-12-06 1975-10-08 Theurillat X Anchor escapement for clocks and watches
CH547516A (de) * 1971-12-06 1974-03-29
ATE389902T1 (de) * 2005-06-23 2008-04-15 Suisse Electronique Microtech Uhr

Also Published As

Publication number Publication date
HK1127647A1 (en) 2009-10-02
DE602007013587D1 (de) 2011-05-12
EP2309344A3 (de) 2011-05-04
EP2309344A2 (de) 2011-04-13
EP2309345A3 (de) 2011-05-04
EP2309345A2 (de) 2011-04-13
EP2309345B1 (de) 2013-03-13
HK1152118A1 (en) 2012-02-17
HK1151864A1 (en) 2012-02-10
EP2075651B1 (de) 2011-03-30
EP2075651A1 (de) 2009-07-01

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