EP2405312A1 - Spiral de balancier à deux niveaux et à centre de masse immobile - Google Patents

Spiral de balancier à deux niveaux et à centre de masse immobile Download PDF

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Publication number
EP2405312A1
EP2405312A1 EP10169068A EP10169068A EP2405312A1 EP 2405312 A1 EP2405312 A1 EP 2405312A1 EP 10169068 A EP10169068 A EP 10169068A EP 10169068 A EP10169068 A EP 10169068A EP 2405312 A1 EP2405312 A1 EP 2405312A1
Authority
EP
European Patent Office
Prior art keywords
spiral
curve
order
spring
center
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.)
Withdrawn
Application number
EP10169068A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jean-Luc Helfer
Kaspar Trümpy
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.)
Montres Breguet SA
Original Assignee
Montres Breguet 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 Montres Breguet SA filed Critical Montres Breguet SA
Priority to EP10169068A priority Critical patent/EP2405312A1/fr
Priority to EP11169540.9A priority patent/EP2405313B1/fr
Priority to KR1020110062572A priority patent/KR20120005949A/ko
Priority to US13/177,845 priority patent/US8480294B2/en
Priority to CN2011101907402A priority patent/CN102314144B/zh
Priority to JP2011152652A priority patent/JP5350441B2/ja
Publication of EP2405312A1 publication Critical patent/EP2405312A1/fr
Priority to HK12106587.2A priority patent/HK1165870A1/xx
Withdrawn legal-status Critical Current

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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
    • 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.
  • EP 08 168453 , EP 08 171694 and EP 08 153598 explain how to manufacture curved spirals in micro-machinable materials respectively with three parts, two parts or integrally. These documents are incorporated by reference into the present description.
  • the object of the present invention is to overcome all or part of the disadvantages mentioned above by proposing a hairspring respecting predetermined conditions capable of reducing the displacement of the center of mass of the hairspring in contraction and expansion.
  • the invention relates to a resonator for a timepiece comprising an inertia characterized in that the inertia cooperates with a hairspring according to one of the preceding 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 step, a continuously variable pitch and are symmetrical with respect to a 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 11 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 12 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 13 and 14 .
  • 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 15 .
  • 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)
EP10169068A 2010-07-09 2010-07-09 Spiral de balancier à deux niveaux et à centre de masse immobile Withdrawn EP2405312A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP10169068A EP2405312A1 (fr) 2010-07-09 2010-07-09 Spiral de balancier à deux niveaux et à centre de masse immobile
EP11169540.9A EP2405313B1 (fr) 2010-07-09 2011-06-10 Spiral à centre de masse immobile
KR1020110062572A KR20120005949A (ko) 2010-07-09 2011-06-28 고정 질량중심을 가진 밸런스 스프링
US13/177,845 US8480294B2 (en) 2010-07-09 2011-07-07 Balance spring with fixed centre of mass
CN2011101907402A CN102314144B (zh) 2010-07-09 2011-07-08 具有固定质心的摆轮游丝
JP2011152652A JP5350441B2 (ja) 2010-07-09 2011-07-11 固定された質量中心を有するひげぜんまい
HK12106587.2A HK1165870A1 (en) 2010-07-09 2012-07-05 Balance spring with fixed centre of mass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10169068A EP2405312A1 (fr) 2010-07-09 2010-07-09 Spiral de balancier à deux niveaux et à centre de masse immobile

Publications (1)

Publication Number Publication Date
EP2405312A1 true EP2405312A1 (fr) 2012-01-11

Family

ID=43384434

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10169068A Withdrawn EP2405312A1 (fr) 2010-07-09 2010-07-09 Spiral de balancier à deux niveaux et à centre de masse immobile
EP11169540.9A Active EP2405313B1 (fr) 2010-07-09 2011-06-10 Spiral à centre de masse immobile

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11169540.9A Active EP2405313B1 (fr) 2010-07-09 2011-06-10 Spiral à centre de masse immobile

Country Status (6)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2570871A1 (fr) * 2011-09-14 2013-03-20 Montres Breguet SA Spiral à deux ressort-spiraux
US9004748B2 (en) 2012-01-05 2015-04-14 Montres Breguet S.A. Balance spring with two hairsprings and improved isochronism

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2397919B1 (fr) * 2010-06-21 2017-11-08 Montres Breguet SA Procédé de fabrication d'un ensemble spiral de pièce d'horlogerie en matériau micro-usinable ou en silicium
EP2687917A3 (en) * 2012-07-17 2018-01-24 Master Dynamic Limited Hairspring for a timepiece and hairspring design for concentricity
EP2690508B1 (fr) * 2012-07-26 2015-02-25 Nivarox-FAR S.A. Spiral d'horlogerie
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 (fr) * 2013-12-16 2015-06-17 ETA SA Manufacture Horlogère Suisse Spiral avec dispositif anti-rapprochement de spires
EP2887154B1 (fr) * 2013-12-20 2016-07-20 Blancpain SA. Mécanisme de fixation d'un piton à un pont de balancier et dispositif régulateur à balancier-spiral comprenant un tel mécanisme
EP3081996B1 (fr) * 2015-04-16 2019-02-27 Montres Breguet S.A. Spiral en materiau micro-usinable avec correction d'isochronisme
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
EP3252542B1 (fr) * 2016-06-01 2022-05-18 Rolex Sa Pièce de fixation d'un ressort-spiral horloger
EP3252541A1 (fr) * 2016-06-01 2017-12-06 Rolex Sa Pièce de fixation d'un ressort-spiral horloger
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2104006A1 (fr) * 2008-03-20 2009-09-23 Nivarox-FAR S.A. Double spiral monobloc et son procédé de fabrication
EP2105807A1 (fr) * 2008-03-28 2009-09-30 Nivarox-FAR S.A. Spiral à élévation de courbe monobloc et son procédé de fabrication

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US30247A (en) * 1860-10-02 Watch
US109826A (en) * 1870-12-06 Improvement in the hair-springs of watches
US570394A (en) * 1896-10-27 Hair-spring for watches
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
EP2104007A1 (fr) * 2008-03-20 2009-09-23 Nivarox-FAR S.A. Spiral monobloc en matériau à base de silicium et son procédé de fabrication
EP2151722B8 (fr) * 2008-07-29 2021-03-31 Rolex Sa Spiral pour résonateur balancier-spiral
CH699882A2 (fr) * 2008-11-06 2010-05-14 Montres Breguet Sa Spiral à élévation de courbe en matériau micro-usinable.
CH700059A2 (fr) * 2008-12-15 2010-06-15 Montres Breguet Sa Spiral à élévation de courbe en matériau à base de silicium.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2104006A1 (fr) * 2008-03-20 2009-09-23 Nivarox-FAR S.A. Double spiral monobloc et son procédé de fabrication
EP2105807A1 (fr) * 2008-03-28 2009-09-30 Nivarox-FAR S.A. Spiral à élévation de courbe monobloc et son procédé de fabrication

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2570871A1 (fr) * 2011-09-14 2013-03-20 Montres Breguet SA Spiral à deux ressort-spiraux
US8979359B2 (en) 2011-09-14 2015-03-17 Montres Breguet S.A. Balance spring with two hairsprings
US9004748B2 (en) 2012-01-05 2015-04-14 Montres Breguet S.A. Balance spring with two hairsprings and improved isochronism
EP2613206B1 (fr) * 2012-01-05 2022-05-11 Montres Breguet SA Spiral à deux ressort-spiraux à isochronisme amélioré

Also Published As

Publication number Publication date
JP5350441B2 (ja) 2013-11-27
CN102314144B (zh) 2013-06-19
JP2012018169A (ja) 2012-01-26
CN102314144A (zh) 2012-01-11
EP2405313A1 (fr) 2012-01-11
US8480294B2 (en) 2013-07-09
US20120008467A1 (en) 2012-01-12
EP2405313B1 (fr) 2017-08-16
HK1165870A1 (en) 2012-10-12
KR20120005949A (ko) 2012-01-17

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