EP3304215A1 - Resonator mit feineinstellung durch indexanordnung - Google Patents

Resonator mit feineinstellung durch indexanordnung

Info

Publication number
EP3304215A1
EP3304215A1 EP16725412.7A EP16725412A EP3304215A1 EP 3304215 A1 EP3304215 A1 EP 3304215A1 EP 16725412 A EP16725412 A EP 16725412A EP 3304215 A1 EP3304215 A1 EP 3304215A1
Authority
EP
European Patent Office
Prior art keywords
resonator
hairspring
spiral
stops
racking
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.)
Granted
Application number
EP16725412.7A
Other languages
English (en)
French (fr)
Other versions
EP3304215B1 (de
Inventor
Jean-Luc Helfer
Marc Stranczl
Laurent Jeanneret
Xavier BERDAT
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Publication of EP3304215A1 publication Critical patent/EP3304215A1/de
Application granted granted Critical
Publication of EP3304215B1 publication Critical patent/EP3304215B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/325—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring in a fixed position, e.g. using a block
    • 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
    • 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
    • G04B18/00—Mechanisms for setting frequency
    • G04B18/02—Regulator or adjustment devices; Indexing devices, e.g. raquettes

Definitions

  • the invention relates to a resonator with fine tuning by racking and more particularly to a resonator whose frequency can be adjusted with a smaller variation for the same displacement of the racking.
  • the adjustment of the frequency of a balance-spring resonator can be made by modifying the inertia of the balance or the elastic torque of the spiral.
  • a racking generally comprises two stops intended to form the counting point, that is to say, to define the length of the spiral blade, called the active length, which will work in contraction and expansion to provide the elastic torque of the resonator.
  • the object of the present invention is to overcome all or part of the drawbacks mentioned above by proposing a resonator with a frequency adjustment system allowing a finer adjustment of the frequency by means of a racking facilitating the final adjustment work. to manufacture and adjustment in after-sales.
  • the invention relates to a resonator of the inertia-elasticity type comprising a hairspring coupled to a flywheel and a frequency adjusting system of the resonator comprising a rack comprising two stops arranged to cooperate with a turn of the hairspring for selectively selecting the active length of the hairspring, characterized in that the portion of the hairspring of the hairspring co-operating with the hairstrip has at least one larger sectional area than the other coils of the hairspring in order to obtain a smaller impact of the hairspring on the frequency of the resonator only on the non-thickened section of the rest of the spiral.
  • an extra thickness of material on the coil spiral which cooperates with the racking is sufficient to make the setting of the resonator step finer.
  • an area of larger section provides a suitable stiffening, in cooperation with a raquetterie, to reduce the influence of this area on the elastic torque of the spiral with respect to the influence on the rest of the not thickened spiral.
  • the displacement of the racking along the thickened section will have a lesser impact on the frequency of the resonator than on the non-thickened section of the remainder of the hairspring, which advantageously makes it possible to obtain the same variation of step with a larger displacement of the raqueterie.
  • the portion of the spiral winding cooperating with the racking comprises at least two zones of different sections and larger than the other turns of the spiral to adjust more finely, in at least two separate ratios, the frequency of the resonator;
  • said at least one zone has a section between 1, 5 and 5 times greater than the other turns of the spiral;
  • the two stops are selectively positioned on either side of the spiral thickness and movable in the same direction as the portion of the coil spiral cooperating with the racking; according to an alternative, the two stops are movable in rotation with respect to an axis;
  • the axis of rotation of the abutments is centered on the center of the circle inscribed at the opening of a shell of the spiral;
  • the two stops are movable in translation relative to a straight line
  • the two stops are formed by a racking key or two snap pins
  • the racket and the part of the spiral winding cooperating with the racking are arranged to offer a one second adjustment per day to the resonator for a displacement of the racking between 10 and 50 micrometers along the part of the coil of the spiral cooperating with the raquetterie.
  • the invention relates to a timepiece comprising a bridge and a plate characterized in that it further comprises a resonator according to one of the preceding variants, the racking being mounted on the bridge and the resonator being pivoted, using a shaft, between the bridge and the plate.
  • FIG. 1 is a representation of a portion of an example of a spiral according to the invention.
  • FIG. 2 is a representation of a portion of an exemplary raetering device according to the invention.
  • - Figure 3 is a top view of a hairspring according to a first embodiment of the invention
  • - Figure 4 is a top view of a hairspring according to a second embodiment of the invention
  • FIGS. 5 to 7 are partial views from above of resonator alternatives according to the invention.
  • Adjustment by a racking is very sensitive, that is to say that a small displacement of the stops generates a large frequency variation, and requires the development of micrometer screw systems to make more precise adjustment.
  • a variation of one second per day is generally obtained for a displacement of about 2 to 3 micrometers of the stops of the raqueterie along the outer turn which corresponds to a racket rotation of about 0 , 05 °.
  • the present invention proposes to restore interest to a setting by racking by proposing an adjustment of one second a day to the resonator for a larger displacement of the racket, for example, between 10 and 50 micrometers, along the part of the spiral turn co-operating with the raquet.
  • the invention relates to a resonator of the inertia-elasticity type comprising a hairspring coupled to a flywheel such as, for example, a balance-spring resonator.
  • a hairspring 1 as partially visible in Figure 1, comprises a shell 3 forming an opening 5 for receiving a balance shaft.
  • the shell 3 is shaped with a blade 7 wound on itself in several turns. In the example of the figure 1, it can be seen that the blade 7 has a thickness E, a height H and a length L.
  • the resonator comprises a frequency adjustment system comprising a rack arrangement arranged to cooperate with a coil spiral to selectively select the active length of the spiral.
  • the turn is preferably the outer turn of the spiral for obvious reasons of accessibility.
  • the penultmen turn that is to say the turn preceding the outer turn.
  • the portion of the spiral winding cooperating with the racking comprises at least one zone of larger section than the other spiral turns in order to more finely adjust the frequency of the resonator. Therefore, as explained above, each section area larger than the other spiral turns may have a thickness variation E and / or a height variation H to change its section.
  • an area of larger section provides a suitable stiffening, in cooperation with a raquetterie, to reduce the influence of this area on the elastic torque of the spiral with respect to the influence on the rest of the not thickened spiral. It is therefore understood that the displacement of the racking along the thickened section will have a smaller impact on the frequency of the resonator than on the non-thickened section of the remainder of the hairspring, which advantageously makes it possible to obtain the same frequency variation with a larger displacement of the raqueterie.
  • FIGS. 1 A first embodiment of the invention is illustrated in FIGS.
  • FIG. 2 there can be seen a resonator 1 1 of the inertia-elasticity type comprising a hairspring 21 coupled to a flywheel 13 on a shaft 15.
  • the resonator 1 1 is thus pivotally mounted between a bridge 14 and a plate 16 via, for example, bearings 12.
  • the spiral 21 is thus mounted between the shaft 15 by its ferrule 23 and the bridge 14 by the stud 29 attached to the end of his outer turn 26.
  • the rack 31 is also mounted on the bridge 14 and has two stops 33, 35.
  • the rack 31 is arranged to cooperate, preferably, with a portion 24 of the outer turn 26 of the hairspring 21 which has at least one larger sectional area. the other spiral turns to fine tune the frequency of the resonator 1 1.
  • the stops 33, 35 are formed by a key 34 mounted on the racket 32.
  • the key 34 can be replaced by two pins to form the stops 33, 35.
  • the thickening of the section is achieved solely by an increase in the thickness of the zone 24 as illustrated in FIGS. 2 and 3.
  • the hairspring 21 comprises the majority of its blade 27 with a thickness Ei of between 20 and 50 micrometers and a zone 24 on its outer turn 26 with a thickness E 2 greater than the thickness Ei.
  • the excess thickness E 2 of the zone 24 is between 50% and 200% relative to that Ei of the rest of the spiral, that is to say between 1, 5 and 3 times the thickness Ei.
  • the thickness E 2 is twice as large as that of the remainder of the hairspring 21.
  • such a hairspring 21 can be obtained for additive or destructive manufacturing methods.
  • additive or destructive manufacturing mention may be made of the LIGA processes, the three-dimensional prints, the methods combining a photolithography of a mask and a dry or wet etching according to the patterns of said mask, the methods combining an alloy casting and a wire rolling according to at least two consecutive consecutive sections or laser engraving.
  • the hairspring can be made from many materials.
  • the hairspring can thus be manufactured based on silicon, ceramic or metal.
  • the hairspring is based on silicon, it may comprise, for example, monocrystalline silicon, doped monocrystalline silicon, polycrystalline silicon, doped polycrystalline silicon, porous silicon, silicon oxide, quartz, silica, silicon nitride or silicon carbide.
  • the spiral when it is based on ceramic, it may comprise, for example, photostructurable glass, borosilicate, aluminosilicate, quartz glass, zerodur, monocrystalline corundum, polycrystalline corundum, alumina, aluminum oxide, aluminum nitride, monocrystalline ruby, polycrystalline ruby, zirconium oxide, titanium oxide, titanium nitride, titanium carbide, nitride tungsten, tungsten carbide, boron nitride or boron carbide.
  • photostructurable glass borosilicate, aluminosilicate, quartz glass, zerodur, monocrystalline corundum, polycrystalline corundum, alumina, aluminum oxide, aluminum nitride, monocrystalline ruby, polycrystalline ruby, zirconium oxide, titanium oxide, titanium nitride, titanium carbide, nitride tungsten, tungsten carbide, boron nitride or boron carbide.
  • the hairspring when it is metal-based, it may comprise, for example, an alloy of iron such as 15P steel, 20AP, 316L or NIVAROX CT, a copper alloy such as brass, a nickel alloy such as nickel-silver or NIVAFLEX, titanium or one of its alloys, gold or one of its alloys, silver or one of its alloys, platinum or one of its alloys, ruthenium or one of its alloys, rhodium or one of its alloys or palladium or one of its alloys.
  • an alloy of iron such as 15P steel, 20AP, 316L or NIVAROX CT
  • a copper alloy such as brass
  • a nickel alloy such as nickel-silver or NIVAFLEX
  • titanium or one of its alloys gold or one of its alloys, silver or one of its alloys, platinum or one of its alloys, ruthenium or one of its alloys, rhodium or one of its alloys or palladium or one of its alloys.
  • the thickness E 2 and the racket 31 are arranged to propose an adjustment of one second per day to the resonator 11 for a displacement of the racking 31 of between 10 and 50 micrometers, such as for example, 20 microns, along the thickened zone 24 of the outer turn 26 of the hairspring 21.
  • the two stops 33, 35 of the racket 31 are selectively positioned on either side of the thickness E 2 of the zone 24 of the spiral 21 and are movable in the same direction A as the length of the zone 24 of the outer turn 26.
  • the direction A forms a circular arc of center C of the circle inscribed at the opening 25 of the ferrule 23 of the spiral 21.
  • This configuration is obtained because, in the example of Figures 2 and 3, the two stops 33, 35 are rotatable relative to an axis coincident with that of the shaft 15.
  • the circle inscribed at the opening 23 of the spiral 21 visible in FIG. 3 represents the external section of the shaft 15 at the level of its contact with the ferrule 23.
  • the portion of the spiral winding 41 cooperating with the raquetry 31 is also the outer turn 46, and comprises at least two zones 42, 44, 48 of different sections and larger than the other turns of the spiral 41 to adjust more finely, in at least two different ratios, the frequency of the resonator.
  • the three thicknesses E 3 , E 4 , E 5 and the racket 31 are arranged to propose three one-second adjustments per day to the resonator for a displacement of the racking 31 between 10 and 50 micrometers, such as, for example, respectively 10, 20 and 10 micrometers, respectively along the thickened zones E 5 , E 4 and E 3 of the outer turn 46 of the spiral 41.
  • the thicknesses E 5 , E 4 and E 3 are respectively 50%, 100% and 50% greater than that Ei of the remainder of the hairspring 41.
  • a timepiece comprising the resonator according to the invention can be developed with the possibility of choosing a finer setting, or even universal, which makes more attractive the use of a setting by racking for the final work of adjustment to the manufacture and the adjustment in after-sales.
  • the variation in thickness between the zones E 5 , E 4 , E 3 , E 2 and E 1 could be more progressively between said zones in order to offer a continuously variable adjustment to the resonator for a displacement of the racking 31 between the thickness zones E 5 , E 4 , E 3 , E 2 and E 1 .
  • 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.
  • the arrangement of the zones 24, 42, 44, 48 and the raquetry 31 can be modified for example for questions of ease of implantation.
  • the axis Ci of rotation of the racking can no longer be confused with the center C of the circle inscribed at the opening of the shell of the hairspring.
  • the arrangement will be adapted so that the two stops 33-i, 35i of the racket are selectively positioned on either side of the thickness of the zone 24i of the hairspring and can be moved according to the same direction Ai that the length of the zone 24i of the outer turn 26 ⁇ .
  • the axis C 2 of rotation of the raquetry can even be substantially in the center of the thickened zone 24 2 of the outer turn 26 2 .
  • the arrangement will be adapted so that the two stops 33 2 , 35 2 of the racket are selectively positioned on either side of the thickness of the zone 24 2 of the hairspring and can be moved according to the same direction A 2 as the length of the zone 24 2 of the outer turn 26 2 .
  • the two stops 33 3 , 35 3 of the racket can even be translational to a straight line.
  • the arrangement will be adapted so that the two stops 33 3 , 35 3 of the racket are selectively positioned on either side of the thickness of the zone 24 3 of the hairspring and can be moved according to the same direction A 3 as the length of the zone 24 3 of the outer turn 26 3 .
  • the translation line passes through the center C of the circle inscribed at the opening of the spiral shell, the adjustment of the step by the racking does not change the angle formed between the output of the spiral to the ferrule and the counting point. We understand that this would bring a time advantage.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Springs (AREA)
  • Micromachines (AREA)
  • Electromechanical Clocks (AREA)
EP16725412.7A 2015-06-03 2016-05-13 Resonator mit feineinstellung durch rückervorrichtung Active EP3304215B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15170557 2015-06-03
PCT/EP2016/060814 WO2016192957A1 (fr) 2015-06-03 2016-05-13 Résonateur à réglage fin par raquetterie

Publications (2)

Publication Number Publication Date
EP3304215A1 true EP3304215A1 (de) 2018-04-11
EP3304215B1 EP3304215B1 (de) 2019-03-06

Family

ID=53298218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16725412.7A Active EP3304215B1 (de) 2015-06-03 2016-05-13 Resonator mit feineinstellung durch rückervorrichtung

Country Status (6)

Country Link
US (1) US10474104B2 (de)
EP (1) EP3304215B1 (de)
JP (1) JP6549251B2 (de)
CN (1) CN107710081B (de)
HK (1) HK1249594A1 (de)
WO (1) WO2016192957A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4286962A1 (de) 2022-06-02 2023-12-06 ETA SA Manufacture Horlogère Suisse Regulierorgan für uhr, das eine rückervorrichtung umfasst, die mit verriegelungsmitteln ausgestattet ist

Families Citing this family (9)

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Publication number Priority date Publication date Assignee Title
EP3451076B1 (de) 2017-08-31 2020-07-29 ETA SA Manufacture Horlogère Suisse Spiralklötzchenträger für ein mechanisches uhrwerk
EP3561609B1 (de) * 2018-04-23 2022-03-23 ETA SA Manufacture Horlogère Suisse Stossdämpfungsschutz eines resonatormechanismus mit flexibler drehführung
EP3786720B1 (de) 2019-08-27 2023-12-13 Rolex Sa Uhrkomponente zur aufnahme eines organs durch einpressen
EP3796101A1 (de) * 2019-09-20 2021-03-24 Nivarox-FAR S.A. Spiralfeder für uhrwerk
US11444366B2 (en) 2019-11-28 2022-09-13 Electronicsand Telecommunications Research Institute Conical resonator formed by winding a tape-shaped band in an overlapping manner into a truncated cone shape
KR102457461B1 (ko) * 2019-11-28 2022-10-21 한국전자통신연구원 전송 거리 확장을 위한 공진기
EP3926412A1 (de) * 2020-06-16 2021-12-22 Montres Breguet S.A. Regulator eines uhrwerks
EP4187326A1 (de) * 2021-11-29 2023-05-31 Omega SA Spiralfeder für resonatormechanismus eines uhrwerks, der mit mitteln zum ausgleichen der starrheit ausgestattet ist
EP4286960A1 (de) 2022-06-02 2023-12-06 ETA SA Manufacture Horlogère Suisse Regulierorgan für uhr, das mit einer rückervorrichtung ausgestattet ist

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US209642A (en) * 1878-11-05 Improvement in balance-springs for time-keepers
CH327796A (fr) 1954-02-22 1958-02-15 Horlogerie Suisse S A Asuag Spiral plat
EP1422436B1 (de) * 2002-11-25 2005-10-26 CSEM Centre Suisse d'Electronique et de Microtechnique SA Spiraluhrwerkfeder und Verfahren zu deren Herstellung
EP1431844A1 (de) * 2002-12-19 2004-06-23 SFT Services SA Vorrichtung für das Regelelement eines Uhrwerks
EP1445670A1 (de) 2003-02-06 2004-08-11 ETA SA Manufacture Horlogère Suisse Spiralfeder der Resonatorunruh und Fabrikationsmethode
DE20306064U1 (de) 2003-04-16 2004-09-02 Hawe Hydraulik Gmbh & Co. Kg Elektrohydraulische Steuervorrichtung und Anschlussgehäuse für eine elektrohydraulische Steuervorrichtung
EP2224293B1 (de) * 2003-04-29 2012-07-18 Patek Philippe SA Genève Unruh und flache Spiralfeder für Uhrwerk
CA2455438C (en) * 2004-01-20 2006-02-07 Kenneth M. Yohnke Building panel
EP2233989A1 (de) * 2009-03-24 2010-09-29 Manufacture et fabrique de montres et chronomètres Ulysse Nardin Le Locle SA Spiralfeder und ihre Reguliereinrichtung
CH701783B1 (fr) * 2009-09-07 2015-01-30 Manuf Et Fabrique De Montres Et Chronomètres Ulysse Nardin Le Locle S A Ressort spiral de mouvement de montre.
CH701846B8 (fr) * 2009-09-21 2015-06-15 Rolex Sa Spiral plat pour balancier d'horlogerie et ensemble balancier-spiral.
EP2474871B1 (de) * 2011-01-06 2017-05-10 ETA SA Manufacture Horlogère Suisse Rückerstifte für Unruh-Spiralfeder
EP2565727A1 (de) * 2011-09-05 2013-03-06 Nivarox-FAR S.A. Verfahren zum Zusammenbau einer Uhrteilgruppe von Unruh - Spiralfeder und Einstellung in der Schwingungsfrequenz
CH705471B1 (fr) * 2011-09-07 2016-03-31 Patek Philippe Sa Geneve Mouvement d'horlogerie à balancier-spiral.
EP2687917A3 (de) * 2012-07-17 2018-01-24 Master Dynamic Limited Spiralfeder für Uhr und Spiralfederausgestaltung für Konzentrizität
HK1178376A2 (en) * 2012-07-17 2013-09-06 Master Dynamic Ltd Hairspring for mechanical timepiece
EP3159748B1 (de) * 2015-10-22 2018-12-12 ETA SA Manufacture Horlogère Suisse Spiralfeder mit reduziertem platzbedarf und variablem durchmesser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4286962A1 (de) 2022-06-02 2023-12-06 ETA SA Manufacture Horlogère Suisse Regulierorgan für uhr, das eine rückervorrichtung umfasst, die mit verriegelungsmitteln ausgestattet ist

Also Published As

Publication number Publication date
HK1249594A1 (zh) 2018-11-02
JP2018514786A (ja) 2018-06-07
CN107710081B (zh) 2019-12-10
US20180120769A1 (en) 2018-05-03
EP3304215B1 (de) 2019-03-06
JP6549251B2 (ja) 2019-07-24
CN107710081A (zh) 2018-02-16
US10474104B2 (en) 2019-11-12
WO2016192957A1 (fr) 2016-12-08

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