EP3023844A1 - Flexible Spiralrolle - Google Patents

Flexible Spiralrolle Download PDF

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Publication number
EP3023844A1
EP3023844A1 EP14194118.7A EP14194118A EP3023844A1 EP 3023844 A1 EP3023844 A1 EP 3023844A1 EP 14194118 A EP14194118 A EP 14194118A EP 3023844 A1 EP3023844 A1 EP 3023844A1
Authority
EP
European Patent Office
Prior art keywords
ferrule
passage
spiral spring
balance shaft
contact lines
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
EP14194118.7A
Other languages
English (en)
French (fr)
Other versions
EP3023844B1 (de
Inventor
Marc Stranczl
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.)
Nivarox Far SA
Nivarox SA
Original Assignee
Nivarox Far SA
Nivarox 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 Nivarox Far SA, Nivarox SA filed Critical Nivarox Far SA
Priority to EP14194118.7A priority Critical patent/EP3023844B1/de
Priority to JP2015222829A priority patent/JP6275102B2/ja
Priority to TW104137894A priority patent/TWI685728B/zh
Priority to CN201510795202.4A priority patent/CN105629697B/zh
Priority to US14/944,790 priority patent/US9658599B2/en
Priority to KR1020150162775A priority patent/KR101787838B1/ko
Publication of EP3023844A1 publication Critical patent/EP3023844A1/de
Priority to HK16110593.2A priority patent/HK1222461B/zh
Application granted granted Critical
Publication of EP3023844B1 publication Critical patent/EP3023844B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G04B17/34—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring onto the 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
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • 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
    • G04B17/34—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring onto the balance
    • G04B17/345—Details of the spiral roll

Definitions

  • the invention relates to an elastic shell intended to be fixed on an axis.
  • the invention also relates to a one-piece spiral spring / elastic ferrule assembly, and a method of manufacturing such a one-piece assembly.
  • the introduction of the balance spring on the axis of the balance is done by means of a ferrule, which is in the form of a ring intended to be driven on the axis of balance and pierced laterally to receive the inner end of the spiral spring.
  • the balance shaft can also be welded to the ferrule.
  • Silicon is a material with many advantages for the manufacture of spiral springs, and micro-manufacturing techniques make it possible to produce a one-piece spiral spring / ferrule assembly.
  • the main disadvantage of silicon is that it does not have a plastic deformation domain. The ferrule can therefore break easily if the stresses exceed the elastic limit. It is thus necessary to dimension the shell both to maintain the spiral spring on the axis of the balance during the operation of the oscillator (minimum torque) and also to be able to assemble the shell with axes, without breaking (or undergoing plastic deformation) if the diameter of the balance shaft and the geometric variations of the ferrule remain within a given tolerance range.
  • the documents EP 1,513,029 and EP 2,003,523 propose ferrules having a triangular opening.
  • the attachment of the spiral takes place at a point of attachment located at one of the vertices of the triangles.
  • the ferrule is formed of an external stiffening structure to which are attached flexible arms which deform to accommodate the balance shaft.
  • Document is also known WO2011026725 a spiral-ferrule spring assembly, with a ferrule having a bore provided with four circular bearing parts for receiving the balance shaft.
  • the bearing portions are delimited by longitudinal grooves formed in the bore of the ferrule.
  • the invention relates to a timepiece comprising a junction point with a spiral spring and a passage for receiving a balance shaft.
  • the passage is substantially cylindrical and is configured to deform elastically in a plane perpendicular to the axis of the passage and resiliently tighten the balance shaft by at least 2 contact lines extending over the height of the internal wall of the passage when the balance shaft is introduced into the passage.
  • An advantage of the invention is that the entire ferrule is deformed, unlike ferrules of the prior art, the ferrule does not have a nose or other rigid part. In the case of the invention, almost all of the ferrule is deformed, except the point of attachment of the ferrule.
  • the invention also relates to a one-piece ferrule / spiral spring assembly comprising a ferrule according to the invention.
  • the invention also relates to a watch movement or a timepiece comprising a one-piece ferrule-spiral spring assembly according to the invention.
  • the invention relates to a ferrule whose material does not comprise a usable plastic field, that is to say with a very small plastic field.
  • the ferrule-spiral assembly illustrated on the figure 2 is made in one piece, typically silicon. It comprises a ferrule 1 and a spiral spring 2 attached at its inner turn 20 to a point of attachment S1 on the periphery of the ferrule 1.
  • the ferrule-spiral assembly is held on a balance shaft 4 with circular section by driving the shell 1 on this shaft 4.
  • the shell 1 comprises a substantially cylindrical passage 10, configured to deform elastically in a plane P perpendicular to the axis of the passage 10 and thus receive and resiliently tighten the balance shaft 4.
  • the flexible passage 10 is of oval shape, and more preferably of "oval triangular" shape, and comprises at least two lines of contact with the balance shaft 4.
  • the flexible passage 10 is of triangular oval shape, and has three contact lines 11a, 11b and 11c with the balance shaft 4, the three contact lines forming, for example, an equilateral triangle.
  • the three contact lines 11a, 11b, 11c with the balance shaft 4 form angles ⁇ , ⁇ and ⁇ between them.
  • the contact lines 11a, 11b and 11c define recesses 10a, 10b and 10c between the ferrule 1 and the rocker shaft 4, these recesses 10a, 10b and 10c being non-contact zones.
  • one of the contact lines is diametrically opposed to the point of attachment with the spiral spring 2, in this way the shell 1 does not undergo deformation at the point of attachment and the location of the point of attachment of the spring spiral 2 is not modified during the introduction of the ferrule 1.
  • the three contact lines 11a, 11b and 11c form between them an angle ⁇ , ⁇ , ⁇ which is preferably greater than 90 degrees, more preferably less than 150 degrees, and is here substantially equal to 120 degrees.
  • the passage 10 exerts, at the level of the contact lines 11a, 11b, 11c, elastic return forces reminding the inner wall of the passage in contact against the balance shaft.
  • the distance between the rocker shaft 4 and the shell 1 at the recesses 10a, 10 and 10c is greater than 0. There is therefore clamping at the three contact lines 11a, 11b and 11c but no clamping at the recesses 10a, 10b and 10c.
  • the distance between the rocker shaft 4 and the shell 1 at the recesses 10a, 10 and 10c is between 0 and a quarter of the diameter of the balance shaft 4. Even more preferably, the distance between the the balance shaft 4 and the ferrule 1 at the recesses 10a, 10 and 10c is between 0 and 50 ⁇ m.
  • the distance between the balance shaft 4 and the ferrule 1 ensures a small clearance while a clamping is applied at the level of the contact lines 11a, 11b and 11c.
  • Such an arrangement has the particular advantage of maximizing the support radius of the passage 10 of the collar 1 on the axis of the shaft 4, while ensuring a sufficient holding torque on the balance shaft 4, with a level of less than the maximum permissible stress for the material.
  • a greater support radius makes it possible to obtain a higher holding torque.
  • the thickness is determined so that the maximum stress exerted by the balance shaft 4 on the passage 10 is less than the elastic limit of the material forming the ferrule 1, that the ferrule 1 accommodates manufacturing tolerances of the balance shaft 4 and that the holding of the ferrule 1 on the shaft 4 (torque, driving force) is adequate.
  • the hairspring 2 comprises a blade 3 wound on itself in a plurality of turns, the inner turn 20 having come into shape with the shell 1.
  • the point of attachment S1 between the inner coil 20 and the ferrule 1 is located on the shell 1. It is also noted that the ferrule 1 is symmetrical with respect to the axis A passing through the center C of the ferrule 1 and the attachment point S 1 .
  • the shell 1 and the spiral spring 2 are made of silicon.
  • the ferrule 1 and the spiral spring 2 are made of a material having no plastic deformation, such as monocrystalline silicon, polycrystalline silicon, porous silicon, amorphous silicon, doped monocrystalline silicon, doped polycrystalline silicon, doped or non-doped silicon carbide, doped or non-doped silicon nitride, doped or non-doped silicon oxide such as quartz or silica, or ceramics.
  • a material having no plastic deformation such as monocrystalline silicon, polycrystalline silicon, porous silicon, amorphous silicon, doped monocrystalline silicon, doped polycrystalline silicon, doped or non-doped silicon carbide, doped or non-doped silicon nitride, doped or non-doped silicon oxide such as quartz or silica, or ceramics.
  • the ferrule 1 and the spiral spring 2 may also be made of a material such as amorphous metal.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
  • Adornments (AREA)
EP14194118.7A 2014-11-20 2014-11-20 Flexible Spiralrolle Active EP3023844B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP14194118.7A EP3023844B1 (de) 2014-11-20 2014-11-20 Flexible Spiralrolle
JP2015222829A JP6275102B2 (ja) 2014-11-20 2015-11-13 可撓性ヒゲ玉
TW104137894A TWI685728B (zh) 2014-11-20 2015-11-17 簧片以及具有此簧片之單件式游絲總成、時計機芯和時計
US14/944,790 US9658599B2 (en) 2014-11-20 2015-11-18 Flexible collet
CN201510795202.4A CN105629697B (zh) 2014-11-20 2015-11-18 柔性内桩
KR1020150162775A KR101787838B1 (ko) 2014-11-20 2015-11-19 가요성 콜릿
HK16110593.2A HK1222461B (zh) 2014-11-20 2016-09-06 柔性内桩

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14194118.7A EP3023844B1 (de) 2014-11-20 2014-11-20 Flexible Spiralrolle

Publications (2)

Publication Number Publication Date
EP3023844A1 true EP3023844A1 (de) 2016-05-25
EP3023844B1 EP3023844B1 (de) 2017-06-28

Family

ID=51903851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14194118.7A Active EP3023844B1 (de) 2014-11-20 2014-11-20 Flexible Spiralrolle

Country Status (6)

Country Link
US (1) US9658599B2 (de)
EP (1) EP3023844B1 (de)
JP (1) JP6275102B2 (de)
KR (1) KR101787838B1 (de)
CN (1) CN105629697B (de)
TW (1) TWI685728B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022224100A1 (fr) * 2021-04-21 2022-10-27 Patek Philippe Sa Geneve Ensemble destiné a équiper un mécanisme ou une piêce d'horlogerie et comprenant au moins un élément élastique et au moins un premer et un second composants horlogers

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3159746B1 (de) * 2015-10-19 2018-06-06 Rolex Sa Hochdotierte siliziumfeder für uhr
EP3671364A1 (de) * 2018-12-17 2020-06-24 Nivarox-FAR S.A. Elastisches halterungsorgan für die befestigung einer uhrenkomponente auf einem halteelement
EP4432020A1 (de) * 2023-03-14 2024-09-18 Rolex Sa Uhrwerk

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430435A (en) * 1966-10-14 1969-03-04 Virola Sa Collet
EP1513029A1 (de) 2003-09-02 2005-03-09 Patek Philippe Sa Spiralrolle für Uhrwerk
EP1584994A1 (de) * 2004-04-06 2005-10-12 Nivarox-FAR S.A. Spiralrolle ohne Deformation des Fixierungsradius der Spiralfeder und Herstellungsverfahren derartige Spiralrolle
EP2184652A1 (de) * 2008-11-06 2010-05-12 Montres Breguet SA Spiralfeder mit Endkurvenerhöhung aus mikro-bearbeitbarem Material
CH700032B1 (fr) * 2006-01-19 2010-06-15 Alain Laesser Mouvement d'horlogerie avec organe régulateur à ressort spiral.
WO2011026725A1 (fr) 2009-09-07 2011-03-10 Manufacture Et Fabrique De Montres Et Chronomètres Ulysse Nardin Le Locle S.A. Ressort spiral

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54166361U (de) * 1978-05-12 1979-11-22
DE60333076D1 (de) * 2003-04-29 2010-08-05 Patek Philippe Sa Unruh- und fläche Spiralfederregulator für Uhrwerk
EP1826634A1 (de) * 2006-02-28 2007-08-29 Nivarox-FAR S.A. Mikromechanisches Bauteil mit formschlüssiger Öffnung zum Assemblieren einer Welle
EP1857891A1 (de) * 2006-05-17 2007-11-21 Patek Philippe Sa Spiralfeder-Spiralrollegesamtheit für ein Uhrwerk
US9250610B2 (en) * 2010-03-25 2016-02-02 Rolex S.A. Split collet with a non-circular opening
WO2013045706A2 (fr) * 2011-09-29 2013-04-04 Rolex S.A. Ensemble monolithique ressort spiral-virole
HK1186057A2 (en) * 2013-01-14 2014-03-07 Master Dynamic Limited Stress-relief elastic structure of hairspring collet
EP2796940A3 (de) * 2013-04-23 2016-05-04 Rolex Sa Uhrkomponente zur Aufnahme eines Organs durch Einpressen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430435A (en) * 1966-10-14 1969-03-04 Virola Sa Collet
EP1513029A1 (de) 2003-09-02 2005-03-09 Patek Philippe Sa Spiralrolle für Uhrwerk
EP2003523A1 (de) 2003-09-02 2008-12-17 Patek, Philippe SA Spiralrolle für Uhr
EP1584994A1 (de) * 2004-04-06 2005-10-12 Nivarox-FAR S.A. Spiralrolle ohne Deformation des Fixierungsradius der Spiralfeder und Herstellungsverfahren derartige Spiralrolle
CH700032B1 (fr) * 2006-01-19 2010-06-15 Alain Laesser Mouvement d'horlogerie avec organe régulateur à ressort spiral.
EP2184652A1 (de) * 2008-11-06 2010-05-12 Montres Breguet SA Spiralfeder mit Endkurvenerhöhung aus mikro-bearbeitbarem Material
WO2011026725A1 (fr) 2009-09-07 2011-03-10 Manufacture Et Fabrique De Montres Et Chronomètres Ulysse Nardin Le Locle S.A. Ressort spiral

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022224100A1 (fr) * 2021-04-21 2022-10-27 Patek Philippe Sa Geneve Ensemble destiné a équiper un mécanisme ou une piêce d'horlogerie et comprenant au moins un élément élastique et au moins un premer et un second composants horlogers

Also Published As

Publication number Publication date
US20160147197A1 (en) 2016-05-26
EP3023844B1 (de) 2017-06-28
CN105629697B (zh) 2018-10-02
JP6275102B2 (ja) 2018-02-07
KR20160060584A (ko) 2016-05-30
CN105629697A (zh) 2016-06-01
TWI685728B (zh) 2020-02-21
JP2016099350A (ja) 2016-05-30
KR101787838B1 (ko) 2017-11-15
US9658599B2 (en) 2017-05-23
HK1222461A1 (zh) 2017-06-30
TW201638682A (zh) 2016-11-01

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