EP2405313B1 - Spiralfeder mit unbeweglichem Massenzentrum - Google Patents

Spiralfeder mit unbeweglichem Massenzentrum Download PDF

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Publication number
EP2405313B1
EP2405313B1 EP11169540.9A EP11169540A EP2405313B1 EP 2405313 B1 EP2405313 B1 EP 2405313B1 EP 11169540 A EP11169540 A EP 11169540A EP 2405313 B1 EP2405313 B1 EP 2405313B1
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EP
European Patent Office
Prior art keywords
curve
balance spring
hairspring
spiral
mass
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Active
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EP11169540.9A
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English (en)
French (fr)
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EP2405313A1 (de
Inventor
Jean-Luc Helfer
Kaspar Trümpy
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Montres Breguet SA
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Montres Breguet SA
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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
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • G04B17/066—Manufacture of the spiral spring

Definitions

  • the invention relates to a hairspring used to form a pendulum - balance resonator whose curvature allows a substantially immobile center of mass development.
  • the documents EP 2 184 652 , EP 2 196 867 and EP 2,105,807 explain how to manufacture curved spirals in micro-machinable materials respectively with three parts, two parts or integrally.
  • the document EP 2 104 006 presents a variant of a double monoblock spiral.
  • the invention relates to a resonator for a timepiece comprising an inertia such as, for example, a balance characterized in that the inertia cooperates with a hairspring according to one of the previous variants.
  • the hairspring is generally adapted so that its variation as a function of the same amplitude is substantially opposite that of the exhaust.
  • the spiral is adapted so that its variation is minimal between the four vertical positions.
  • a hairspring 1 comprising a first hairspring 3 whose curve extends in a first plane, a second hairspring 5 whose curve extends in a second plane parallel to the foreground .
  • Each end of spiral spring 3, 5 being secured by a fastener 4 to form a double spiral in series.
  • the curve of the first spiral spring 3 and the curve of the second spiral spring 5 preferably comprise each a continuously variable pitch and are symmetrical with respect to a straight line A parallel to the first and second passing planes. by the centers of the median plane P of projection of the fastener 4 and the axis of the balance.
  • the spiral spring 3 comprises a ferrule 6 in one piece and the end of the spiral spring 5, which is opposite the fastener 4, is secured to a stud 7. It has been chosen a pendulum inertia s' raising to 8 mg.cm 2 and a spiral 1 of silicon of a section of 0.0267 mm x 0.1 mm and a length L of 46 mm.
  • the result of the simulation illustrated in figure 12 has a very favorable result of 0.3 sj -1 at 300 °. We immediately understand the advantage of these new conditions compared to those including MM. Phillips and Grossmann with whom adjustments are still necessary to reduce the "belly”.
  • the attachment can become a non-negligible mass and considerably amplify the anisochronism as visible in the figure 13 in which the gait variation reaches 11.8 sj -1 at 200 °.
  • the invention proposes to cancel the unbalance of the fastener by symmetrically relating an unbalance to the two spiral springs 3, 5.
  • the reported unbalance is formed by two counterweights 8 ', 9' substantially identical on each spiral spring 3 ', 5' as illustrated in FIGS. Figures 14 and 15 .
  • the masses of the counterweights 8 ', 9' are substantially equal and their sum is greater or lesser than that of the fastener 4 'according to the difference in distance between, on the one hand, the fastener 4' and the balance shaft, and, on the other hand, the counterweights 8 ', 9' and said balance shaft. It is understood that in case of substantially equivalent distance, the masses added counterweight 8 ', 9' will form a mass substantially equivalent to that of the fastener 4 '. This advantageously makes it possible to obtain, with the same criteria above, a favorable variation in the path from 1.4 sj -1 to 200 ° as illustrated in FIG. figure 16 .
  • the present invention is not limited to the illustrated example but is susceptible of various variations and modifications that will occur to those skilled in the art.
  • other framing criteria may be provided such as a limitation of the ratio between the inner radius and the outer radius so that the ends of the spiral springs are not too close to the point of origin where must be present the balance shaft.
  • the spiral when the spiral is silicon, it can be at least partially covered with silicon dioxide to make it less sensitive to temperature variations and mechanical shocks.
  • each counterweight 8 ', 9' can be different. They can in particular be formed each of two distinct masses that is to say that there could be four counterweights.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Springs (AREA)
  • Micromachines (AREA)

Claims (10)

  1. Doppelspirale (1, 1'), umfassend:
    eine erste Spiralfeder (3, 3'), deren Windung sich in einer ersten Ebene erstreckt, eine zweite Spiralfeder (5, 5'), deren Windung sich in einer zweiten Ebene, die zu der ersten Ebene parallel ist, erstreckt, eine Befestigung (4, 4'), die ein Ende der Windung der ersten Spiralfeder (3, 3') an einem Ende der Windung der zweiten Spiralfeder (5, 5') befestigt, um die in Reihe angeordnete Doppelspirale (1, 1') zu bilden, wobei die Windung der ersten Spiralfeder (3, 3') und die Windung der zweiten Spiralfeder (5, 5') jeweils eine kontinuierlich veränderliche Steigung besitzen, wobei die erste und die zweite Spiralfeder in Bezug auf eine Gerade (A), die zu der ersten und der zweiten Ebene parallel ist und durch die Mittelebene der Projektion der Befestigung (4, 4') verläuft, symmetrisch sind, dadurch gekennzeichnet, dass jede Windung bestrebt ist, dass die folgende Beziehung im Wesentlichen null ist: P → n = n + 1 L n + 1 ∫ 0 L ds ⋅ s n ⋅ x → s
    Figure imgb0023
     wobei:
    - P (n) das Moment der Spirale mit Ordnung n ist;
    - L die Länge der Spirale ist;
    - sn die krummlinige Abszisse entlang der Spirale in der Potenz der Ordnung n ist; und
    - x (s) die Parametrisierung der Spirale durch ihre gekrümmte Abszisse ist,
    und dass jede Windung die folgenden Beziehungen erfüllt: P x 0 = 0 und P y 1 = 2 P y 0 ,
    Figure imgb0024
    um die Verlagerungen ihres Massenschwerpunkts bei ihrer Kontraktion und ihrer Expansion zu verringern.
  2. Spirale (1, 1') nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass jede Windung ferner die folgende Beziehung erfüllt: P x 2 = 3 P x 1 ,
    Figure imgb0025
     um die Verlagerungen ihres Massenschwerpunkts bei ihrer Kontraktion und ihrer Expansion vorteilhaft zu verringern.
  3. Spirale (1, 1') nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass jede Windung ferner die folgende Beziehung erfüllt: P y 3 = 4 P y 2 − 8 P y 0 ,
    Figure imgb0026
     um die Verlagerungen ihres Massenschwerpunkts bei ihrer Kontraktion und ihrer Expansion vorteilhaft zu verringern.
  4. Spirale (1, 1') nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass jede Windung ferner die folgende Beziehung erfüllt: P x 4 = 5 P x 3 − 20 P x 1 ,
    Figure imgb0027
     um die Verlagerungen ihres Massenschwerpunkts bei ihrer Kontraktion und ihrer Expansion vorteilhaft zu verringern.
  5. Spirale (1, 1') nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass jede Windung ferner die folgende Beziehung erfüllt: P y 5 = 6 P y 4 − 40 P y 2 + 96 P y 0 ,
    Figure imgb0028
     um die Verlagerungen ihres Massenschwerpunkts bei ihrer Kontraktion und ihrer Expansion vorteilhaft zu verringern.
  6. Spirale (1, 1') nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass jede Windung ferner die folgende Beziehung erfüllt: P x 6 = 7 P x 5 − 70 P x 3 + 336 P x 1 ,
    Figure imgb0029
     um die Verlagerungen ihres Massenschwerpunkts bei ihrer Kontraktion und ihrer Expansion vorteilhaft zu verringern.
  7. Spirale (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jede Spiralfeder (3', 5') mindestens ein Ausgleichsgewicht (8', 9') umfasst, um die durch die Masse der Befestigung (4') gebildete Unwucht auszugleichen.
  8. Spirale (1, 1') nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie aus Silicium gebildet ist.
  9. Spirale (1, 1') nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass sie mindestens einen mit Siliciumdioxid bedeckten Teil aufweist, um ihre Empfindlichkeit gegenüber Temperaturschwankungen und mechanischen Stößen zu begrenzen.
  10. Resonator für ein Zeitmessgerät, der eine Trägheit aufweist, dadurch gekennzeichnet, dass die Trägheit mit einer Spirale nach einem der vorhergehenden Ansprüche zusammenwirkt.
EP11169540.9A 2010-07-09 2011-06-10 Spiralfeder mit unbeweglichem Massenzentrum Active EP2405313B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11169540.9A EP2405313B1 (de) 2010-07-09 2011-06-10 Spiralfeder mit unbeweglichem Massenzentrum

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP10169068A EP2405312A1 (de) 2010-07-09 2010-07-09 Spiralfeder für Unruh mit zwei Stufen und unbeweglichem Massenzentrum
EP11169540.9A EP2405313B1 (de) 2010-07-09 2011-06-10 Spiralfeder mit unbeweglichem Massenzentrum

Publications (2)

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EP2405313A1 EP2405313A1 (de) 2012-01-11
EP2405313B1 true EP2405313B1 (de) 2017-08-16

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EP10169068A Withdrawn EP2405312A1 (de) 2010-07-09 2010-07-09 Spiralfeder für Unruh mit zwei Stufen und unbeweglichem Massenzentrum
EP11169540.9A Active EP2405313B1 (de) 2010-07-09 2011-06-10 Spiralfeder mit unbeweglichem Massenzentrum

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Country Status (6)

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US (1) US8480294B2 (de)
EP (2) EP2405312A1 (de)
JP (1) JP5350441B2 (de)
KR (1) KR20120005949A (de)
CN (1) CN102314144B (de)
HK (1) HK1165870A1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2397919B1 (de) * 2010-06-21 2017-11-08 Montres Breguet SA Herstellungsverfahren einer Spiralfederanordnung einer Uhr aus mikro-bearbeitbarem Material oder Silizium
EP2570871B1 (de) * 2011-09-14 2014-03-19 Montres Breguet SA Spirale mit zwei Spiralfedern
EP2613206B1 (de) 2012-01-05 2022-05-11 Montres Breguet SA Spirale mit zwei Spiralfedern mit verbessertem Isochronismus
EP2687917A3 (de) * 2012-07-17 2018-01-24 Master Dynamic Limited Spiralfeder für Uhr und Spiralfederausgestaltung für Konzentrizität
EP2690508B1 (de) * 2012-07-26 2015-02-25 Nivarox-FAR S.A. Spiralfeder einer Uhr
JP6013224B2 (ja) * 2013-02-19 2016-10-25 セイコーインスツル株式会社 ひげぜんまい、ムーブメント、時計及びひげぜんまいの製造方法
JP6057766B2 (ja) * 2013-02-19 2017-01-11 セイコーインスツル株式会社 ひげぜんまい、ムーブメント、時計及びひげぜんまいの製造方法
EP2884347A1 (de) * 2013-12-16 2015-06-17 ETA SA Manufacture Horlogère Suisse Spiralfeder mit Vorrichtung zum Verhindern der gegenseitigen Annäherung der Federwindungen
EP2887154B1 (de) * 2013-12-20 2016-07-20 Blancpain SA. Befestigungsmechanismus eines Spiralklötzchen an eine Unruhbrücke, und Reguliervorrichtung mit Unruh-Spiralfeder, die einen solchen Mechanismus umfasst
EP3081996B1 (de) * 2015-04-16 2019-02-27 Montres Breguet S.A. Spirale aus mikrobearbeitbarem material mit isochronismus-korrektur
CN107615182B (zh) * 2015-06-15 2020-02-07 西铁城时计株式会社 时钟的调速装置
SG11201806735QA (en) * 2016-03-23 2018-09-27 Patek Philippe Sa Geneve Balance-hairspring oscillator for a timepiece
EP3252541A1 (de) * 2016-06-01 2017-12-06 Rolex Sa Teil zum befestigen einer unruhspiralfeder
EP3252542B1 (de) * 2016-06-01 2022-05-18 Rolex Sa Teil zur befestigung einer unruhspirale
JP6847757B2 (ja) * 2017-05-09 2021-03-24 セイコーインスツル株式会社 ムーブメント及び時計
WO2019103977A1 (en) * 2017-11-21 2019-05-31 Firehouse Horology, Inc. Geometries for hairsprings for mechanical watches enabled by nanofabrication

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US570394A (en) * 1896-10-27 Hair-spring for watches
US109826A (en) * 1870-12-06 Improvement in the hair-springs of watches
US30247A (en) * 1860-10-02 Watch
US2632292A (en) * 1949-02-16 1953-03-24 Gen Time Corp Impulse electric clock
DE2902810C2 (de) * 1979-01-25 1981-01-15 Erich Prof. 5000 Koeln Schiebuhr Unruh für zeithaltende Geräte
EP2104006B1 (de) * 2008-03-20 2010-07-14 Nivarox-FAR S.A. Monoblock-Doppelspirale und ihr Herstellungsverfahren
EP2104007A1 (de) * 2008-03-20 2009-09-23 Nivarox-FAR S.A. Monoblockspirale aus Material auf Siliziumbasis und ihr Herstellungsverfahren
EP2105807B1 (de) * 2008-03-28 2015-12-02 Montres Breguet SA Monoblockspirale zur Erhöhung der Kurve und ihr Herstellungsverfahren
EP2151722B8 (de) * 2008-07-29 2021-03-31 Rolex Sa Spiralfeder für Spiralfeder-Unruh-Resonator
CH699882A2 (fr) * 2008-11-06 2010-05-14 Montres Breguet Sa Spiral à élévation de courbe en matériau micro-usinable.
EP2196867A1 (de) * 2008-12-15 2010-06-16 Montres Breguet S.A. Spirale mit Kurvenerhöhung aus Material auf Siliziumbasis

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HK1165870A1 (en) 2012-10-12
JP5350441B2 (ja) 2013-11-27
KR20120005949A (ko) 2012-01-17
US20120008467A1 (en) 2012-01-12
CN102314144B (zh) 2013-06-19
CN102314144A (zh) 2012-01-11
EP2405312A1 (de) 2012-01-11
US8480294B2 (en) 2013-07-09
EP2405313A1 (de) 2012-01-11
JP2012018169A (ja) 2012-01-26

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