EP2003523B1 - Spiralrolle für Uhr - Google Patents

Spiralrolle für Uhr Download PDF

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Publication number
EP2003523B1
EP2003523B1 EP08015682A EP08015682A EP2003523B1 EP 2003523 B1 EP2003523 B1 EP 2003523B1 EP 08015682 A EP08015682 A EP 08015682A EP 08015682 A EP08015682 A EP 08015682A EP 2003523 B1 EP2003523 B1 EP 2003523B1
Authority
EP
European Patent Office
Prior art keywords
collet
flexible structure
balance spring
ferrule
spring assembly
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.)
Expired - Lifetime
Application number
EP08015682A
Other languages
English (en)
French (fr)
Other versions
EP2003523A1 (de
Inventor
Frédéric Maier
Sylvain Jeanneret
Andreas Kuoni
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.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
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 Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Publication of EP2003523A1 publication Critical patent/EP2003523A1/de
Application granted granted Critical
Publication of EP2003523B1 publication Critical patent/EP2003523B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton

Definitions

  • the present invention relates to a ferrule-spiral clockwork assembly, adapted to be driven on the shaft of a pendulum in a clockwork movement.
  • the ferrules found in the current watch movements are often made of steel or brass and usually deform plastically when they are driven on the balance shaft.
  • resilient ferrules are also known capable of elastically tightening the balance shaft. The latter have several advantages, including that of being made in a brittle material such as silicon.
  • a disadvantage of elastic ferrules lies in the fact that they reduce the isochronism of the sprung balance.
  • the shell opening to receive the balance shaft, indeed sees its center of gravity move, which generates an imbalance in the balance spring system.
  • the regular shape of the ferrule means that the center of gravity of the ferrule hardly moves during the driving.
  • the attachment point of the hairspring on the shell located on the periphery of the shell, it moves, which decenter the hairspring.
  • the present invention aims to provide a ferrule-spiral assembly comprising a resilient ferrule which is balanced and which, compared to conventional elastic ferrules, allows to reduce the displacement of the attachment point of the spiral on the ferrule when driving the latter on the balance shaft and thus improve the isochronism of the sprung balance.
  • the ferrule-spiral assembly illustrated in the figure is made in one piece, typically silicon. It comprises a ferrule 1 and a spiral spring 2 attached at its inner end 20 to a point 3 on the periphery of the shell 1.
  • the ferrule-spiral assembly is held on a balance shaft 4 with circular section by driving the ferrule 1 on this shaft 4.
  • the outer end 21 of the spiral 2 is fixed to a peak 5.
  • the ferrule 1 comprises an inner flexible structure 10 elastically receiving and tightening the rocker shaft 4 and an external stiffening structure 11 surrounding the flexible structure 10.
  • the stiffening structure 11 is attached to the latter at distinct points 12a, 12b and 12c, thus defining recesses 13a, 13b and 13c between the structures 10 and 11.
  • the flexible structure 10 is preferably in the form of a regular closed curve, typically a regular polygon, having a determined number of points of contact with the balance shaft 4, different from the points 12a, 12b, 12c of attachment of the rigidification structure 11 to the flexible structure 10.
  • the flexible structure 10 is substantially in the shape of an equilateral triangle and thus has three points of contact 14a, 14b and 14c with the shaft 4, and its vertices correspond to the aforementioned points of attachment 12a, 12b, 12c.
  • the elasticity of the structure 10 results from the relatively thin, of the latter.
  • the flexible structure 10 has a center of gravity G which remains substantially the same before and after the driving on the shaft 4.
  • the stiffening structure 11 is also in the form of a closed curve and thus completely surrounds the flexible structure 10.
  • the stiffening structure 11 has a shape similar to that of the flexible structure 10, that is to say substantially equilateral triangular, but its vertices 15a, 15b, 15c, corresponding to the points of attachment 12a, 12b, 12c, that is to say to the vertices of the equilateral triangle formed by the flexible structure 10, are rounded.
  • the inner end 20 is preferably substantially an extension of one of the rounded vertices of the structure 11, namely the vertex 15a corresponding to the point of attachment 12a. It will be noted in this regard that to ensure a quasi-continuity of shape between the top 15a of the stiffening structure 11 and the inner end 20 of the hairspring 2, the top 15a, unlike the vertices 15b, 15c, has a center of curvature which is distinct from the center of gravity G of the flexible structure 10.
  • this shell 1 To rebalance the shell 1, that is to say, to ensure that its center of gravity corresponds to the center of gravity G of the flexible structure 10 and thus on the axis of the balance shaft 4, there is provided on this shell 1 a compensation zone, constituted for example by a variable thickness e formed on one of the sides of the triangle defined by the stiffening structure 11, in the occurrence the side located between the vertices 15b and 15c, as illustrated in the figure.
  • the shape and dimensions of this compensation zone can be appropriately determined by a rebalancing method known per se.
  • the stiffening structure 11 has a thickness sufficient to almost not deform during the driving and that in particular the points of attachment 12a, 12b, 12c and therefore the vertices 15a, 15b, 15c remain substantially fixed relative to the center of the ferrule 1 during this hunting.
  • the center of gravity of the ferrule 1 remains constant during the driving of the ferrule-spiral assembly on the balance shaft 4 but also the point 3 of attachment of the spiral 2 to the ferrule 1 This results in an improvement of the isochronism of the sprung balance.

Claims (6)

  1. Baugruppe aus Spiralrolle und Spiralfeder mit einer Spiralrolle (1) und einer Spiralfeder (2), die Spiralrolle unfassend eine biegsame Struktur (10), die in der Lage ist, eine Welle (4) elastisch einzuspannen, und einer versteifenden Struktur (11), die sich ausserhalb der biegsamen Struktur (10) befindet und zumindest in einem Punkt (12a, 12b, 12c) an dieser befestigt ist, dadurch gekennzeichnet, dass die biegsame Struktur (10) eine geschlossene und im Wesentlichen gleichseitige dreieckige Gestalt besitzt, dadurch, dass die versteifende Struktur (11) an drei Punkten (12a, 12b, 12c), die den Ecken des durch die biegsame Struktur (10) definierten gleichseitigen Dreiecks entsprechen, an der biegsamen Struktur (10) befestigt ist und an den Befestigungspunkten (12a, 12b, 12c) abgerundete Ecken (15a, 15b, 15c) aufweist, dadurch, dass das innere Ende (20) der Spiralfeder (2) an der versteifenden Struktur (11) der Spiralrolle (1) so befestigt ist, dass es im Wesentlichen eine Verlängerung einer (15a) der abgerundeten Ecken der versteifenden Struktur (11) bildet, dadurch, dass diese (15a) der abgerundeten Ecken einen Krümmungsmittelpunkt besitzt, der vom Schwerpunkt (G) der biegsamen Struktur (10) abweicht, und dadurch, dass die Spiralrolle (1) eine Ausgleichszone (e) umfasst, die so ausgelegt ist, dass der Schwerpunkt der Spiralrolle (1) im Wesentlichen dem Schwerpunkt (G) der biegsamen Struktur (10) entspricht.
  2. Baugruppe aus Spiralrolle und Spiralfeder nach Anspruch 1, dadurch gekennzeichnet, dass die Spiralrolle aus einem einzigen Stück besteht.
  3. Baugruppe aus Spiralrolle und Spiralfeder nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Spiralrolle aus Silicium besteht.
  4. Baugruppe aus Spiralrolle und Spiralfeder nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Ausgleichszone aus einer Überdicke (e) besteht, die auf einer Seite der versteifenden Struktur (11) ausgebildet ist.
  5. Baugruppe aus Spiralrolle und Spiralfeder nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sie aus einem einzigen Stück besteht.
  6. Baugruppe aus Spiralrolle und Spiralfeder nach Anspruch 5, dadurch gekennzeichnet, dass sie aus Silicium besteht.
EP08015682A 2003-09-02 2003-09-02 Spiralrolle für Uhr Expired - Lifetime EP2003523B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03019944A EP1513029B1 (de) 2003-09-02 2003-09-02 Spiralrolle für Uhrwerk

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP03019944A Division EP1513029B1 (de) 2003-09-02 2003-09-02 Spiralrolle für Uhrwerk
EP03019944.2 Division 2003-09-02

Publications (2)

Publication Number Publication Date
EP2003523A1 EP2003523A1 (de) 2008-12-17
EP2003523B1 true EP2003523B1 (de) 2011-06-22

Family

ID=34130109

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08015682A Expired - Lifetime EP2003523B1 (de) 2003-09-02 2003-09-02 Spiralrolle für Uhr
EP03019944A Expired - Lifetime EP1513029B1 (de) 2003-09-02 2003-09-02 Spiralrolle für Uhrwerk

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03019944A Expired - Lifetime EP1513029B1 (de) 2003-09-02 2003-09-02 Spiralrolle für Uhrwerk

Country Status (4)

Country Link
EP (2) EP2003523B1 (de)
AT (2) ATE411550T1 (de)
CH (1) CH698081B1 (de)
DE (1) DE60324141D1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE517374T1 (de) 2004-08-31 2011-08-15 Patek Philippe Sa Geneve Spiralrolle für uhren
EP1705533B1 (de) * 2005-03-22 2010-04-07 Patek Philippe SA Genève Zusammenbau eines Teils mit einer Achse
CH696475A5 (fr) * 2005-05-12 2007-06-29 Eta Sa Mft Horlogere Suisse Organe d'affichage analogique en matériau cristallin, pièce d'horlogerie pourvue d'un tel organe d'affichage et procédé pour sa fabrication.
GB0509886D0 (en) * 2005-05-14 2005-06-22 Levingston Gideon R Balance wheel mass and regulating element assembly and balance wheel and balance spring manufacturing processes for horolongical oscillator mechanisms
WO2006123095A2 (en) 2005-05-14 2006-11-23 Gideon Levingston Balance spring, regulated balance wheel assembly and methods of manufacture thereof
DE602006009753D1 (de) 2006-02-24 2009-11-26 Patek Philippe Sa Elastisches Befestigungsorgan für Uhren
EP1850193B1 (de) * 2006-04-28 2019-06-12 Patek Philippe SA Genève Verfahren zur Einpressung eines Teils in ein anderes Teil
EP1857891A1 (de) * 2006-05-17 2007-11-21 Patek Philippe Sa Spiralfeder-Spiralrollegesamtheit für ein Uhrwerk
US8100579B2 (en) 2006-09-08 2012-01-24 Gideon Levingston Thermally compensating balance wheel
EP2219083B1 (de) 2009-02-13 2011-11-23 Patek Philippe SA Genève Uhrwerksbestandteil
EP2442189A1 (de) * 2010-10-15 2012-04-18 ETA SA Manufacture Horlogère Suisse Zusammenbauverfahren für ein Teil, das keinen Plastizitätsbereich enthält
EP2761380B1 (de) 2011-09-29 2023-05-31 Rolex S.A. Einteilige anordnung aus einer spiralfeder und spannzange
FR2992745B1 (fr) 2012-06-28 2015-03-27 Philippe Rhul Spiral guide de la lumiere, systeme de controle in-situ d'un mouvement d'horlogerie equipe de ce spiral, et dispositif portable de controle
EP3023844B1 (de) 2014-11-20 2017-06-28 Nivarox-FAR S.A. Flexible Spiralrolle
EP3401740B1 (de) * 2017-05-12 2021-03-31 Patek Philippe SA Genève Uhrkomponente zum einpressen ohne gratbildung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1376018A (fr) 1963-10-26 1964-10-23 Virola Sa Virole d'horlogerie
CH490703A (fr) 1968-01-26 1970-01-30 Nivarox Sa Virole d'horlogerie
CH1583371A4 (de) * 1971-02-10 1973-08-31
FR2731715B1 (fr) * 1995-03-17 1997-05-16 Suisse Electronique Microtech Piece de micro-mecanique et procede de realisation
EP1302821A3 (de) * 2001-10-10 2010-05-05 Franck Muller-Watchland SA Spiralfeder für Zeitmessgerät

Also Published As

Publication number Publication date
CH698081B1 (fr) 2009-05-15
EP1513029A1 (de) 2005-03-09
DE60324141D1 (de) 2008-11-27
ATE411550T1 (de) 2008-10-15
EP2003523A1 (de) 2008-12-17
ATE514124T1 (de) 2011-07-15
EP1513029B1 (de) 2008-10-15

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