EP2881804A2 - Spiralklötzchen für Uhr - Google Patents

Spiralklötzchen für Uhr Download PDF

Info

Publication number
EP2881804A2
EP2881804A2 EP14194961.0A EP14194961A EP2881804A2 EP 2881804 A2 EP2881804 A2 EP 2881804A2 EP 14194961 A EP14194961 A EP 14194961A EP 2881804 A2 EP2881804 A2 EP 2881804A2
Authority
EP
European Patent Office
Prior art keywords
component
hairspring
spiral
thickness
reference thickness
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
EP14194961.0A
Other languages
English (en)
French (fr)
Other versions
EP2881804B1 (de
EP2881804A3 (de
Inventor
Gaëtan Villard
Lucien Germond
Polychronis Nakis Karapatis
Stéphane Beugin
Sylvain Maréchal
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
Priority claimed from EP13196153.4A external-priority patent/EP2881803B1/de
Application filed by Montres Breguet SA filed Critical Montres Breguet SA
Priority to EP14194961.0A priority Critical patent/EP2881804B1/de
Publication of EP2881804A2 publication Critical patent/EP2881804A2/de
Publication of EP2881804A3 publication Critical patent/EP2881804A3/de
Priority to US14/873,533 priority patent/US9367038B1/en
Priority to JP2015216431A priority patent/JP6018686B2/ja
Priority to CN201510829127.9A priority patent/CN105629698B/zh
Application granted granted Critical
Publication of EP2881804B1 publication Critical patent/EP2881804B1/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
    • G04B17/325—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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • 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
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/04—Hands; Discs with a single mark or the like
    • G04B19/044—Mounting and setting of the hands on the axle
    • 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
    • G04B18/026—Locking the hair spring in the indexing device, e.g. goupille of the raquette
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49579—Watch or clock making
    • Y10T29/49581—Watch or clock making having arbor, pinion, or balance

Definitions

  • the invention relates to a clockwork studon comprising a housing for receiving a hairspring with two opposite side surfaces remote from a reference thickness.
  • the invention further relates to an assembly comprising a hairspring which comprises two opposite side surfaces remote from a reference thickness, and such a piton sized to receive said hairspring.
  • the invention also relates to a watch movement comprising at least one such assembly or such piton.
  • the invention also relates to a timepiece comprising at least one such movement and / or at least one such set and / or such a peak.
  • the invention also relates to a method of fixing a spiral to a peak
  • the invention relates to the field of mechanical clockwork oscillator mechanisms, comprising a spiral spring.
  • Mechanical clockwork oscillator mechanisms comprising a spiral spring, generally comprise a pin for fixing the outer end of the spiral spring.
  • the attachment of the hairspring to the pin is usually done by gluing, which is not perfectly reproducible, and can lead to pollution of the watch movement.
  • the invention proposes to provide an alternative to the gluing of the hairspring in the eye, and to replace it with a reproducible fixation of the hairspring, less dependent on the operator performing the assembly.
  • the invention relates to a clockwork studon comprising a housing for receiving a hairspring with two opposite lateral surfaces remote from a reference thickness, characterized in that said pin comprises, around said housing, at least a monolithic component made of memory alloy of form having at least two tabs together defining an air gap and each arranged to bear on one of said opposite side surfaces of said spiral, and in that in the free state, the minimum width of said gap is greater than the maximum value of said reference thickness when said component is in an open position corresponding to a martensitic structure, and in that the maximum width of said air gap is less than the minimum value of said reference thickness when said component is in a closed position corresponding to a austenitic structure.
  • the invention also relates to an assembly comprising a spiral which comprises two opposite lateral surfaces distant from a reference thickness, and such a stud sized to receive said spiral, characterized in that said spiral locally comprises at least one zone of less thickness of which the minimum thickness is said reference thickness for which said peak is designed and which is framed by thick areas whose minimum thickness is greater than said reference thickness.
  • the invention also relates to a watch movement comprising at least one such assembly or such piton.
  • the invention also relates to a timepiece comprising at least one such movement and / or at least one such set and / or such a peak.
  • Mechanical clock oscillator mechanisms comprising a spiral spring whose outer end is fixed to a pin, itself attached to a plate, a bridge, a cock or the like.
  • the invention proposes to provide a reproducible fixation of the hairspring, less dependent on the operator performing the assembly, and preferably achievable with automated production means such as a robot assembly or the like, performing the gripping and the relative positioning of the components between them, to which this robot component is capable of selectively applying heating or cooling in a localized and almost instantaneous manner.
  • the invention thus relates to a clock 1 having a housing 2 for receiving a hairspring 3, this hairspring 3 conventionally comprising two opposite side surfaces 31, 32, distant from a reference thickness ER.
  • this stud 1 comprises, around the housing 2, at least one monolithic component 8 of shape memory alloy.
  • the shape memory alloy may be chosen from different families of materials, in particular and without limitation heat-activated shape memory alloys, magnetically activated shape memory alloys, or shape memory polymers.
  • the invention is described herein in a particular nonlimiting example with a thermally activated shape memory alloy.
  • a so-called martensitic state and a so-called austenitic state which correspond to different structuring of the material, and to spatial distributions of the different atoms in space, are generally distinguished.
  • This component 8 comprises at least two lugs 11, 12, which together define an air gap E and each arranged to bear on one of the opposite lateral surfaces 31, 32, of such a hairspring 3.
  • the minimum width of this gap E is greater than the maximum value of the reference thickness ER when the component 8 is in a open position corresponding to a martensitic structure, and the maximum width of the air gap E is less than the minimum value of the reference thickness ER when the component 8 is in a closed position corresponding to an austenitic structure.
  • the Figures 1 and 2 illustrate these two open and closed positions of the component 8 around the hairspring 3.
  • the lugs 11 and 12 pinch the hairspring 3, preferably with a bearing on the entire height of the lateral surfaces 31 and 32 of the hairspring, and over the entire thickness L piton 1.
  • the housing 2 of the piton 1 has an axial abutment bearing surface 9 arranged to receive a support 33 of a hairspring 3.
  • piton 1 is monolithic with component 8.
  • the shape memory alloy is chosen so that the piton 1 supports, without significant modification of its clamping, a minimum service temperature TSMIN of -20 ° C.
  • the shape memory alloy is chosen so that the piton 1 supports, without significant modification of its clamping, a maximum operating temperature TSMAX of + 70 ° C.
  • the invention also relates to an assembly 10 comprising such a hairspring 3 which comprises two opposite lateral surfaces 31, 32, remote by a reference thickness ER, and such a pin 1 sized to receive this hairspring 3.
  • the spiral 3) locally comprises at least one zone of lesser thickness, the minimum thickness of which is the reference thickness ER, for which the stud 1 is designed, and which is framed by zones of great thickness 35 of which minimum thickness is greater than the reference thickness ER.
  • the spiral 3 comprises an alternation of such areas of lesser thickness and such thick zones 35, for the adjustment of the active length of the spiral 3 by the discrete cooperation of the stud 1 with one of these zones.
  • the hairspring 3 can, again, be graduated at these different positions of adjustment in active length.
  • each zone of lesser thickness 30 has a length substantially equal to, slightly greater than, the thickness of the lugs 11, 12, of the peak 1.
  • these zones of lesser thickness 30 all have the same profile, and in that the lugs 11, 12, of the piton 1 each have a complementary profile of the spiral profile 3 which faces them in each zone of lesser thickness 30.
  • the invention also relates to a watch movement 100 comprising at least one such stud 1, or / and such an assembly 10.
  • the invention also relates to a timepiece 200 comprising at least one such movement 100, and / or at least one such pin 1, and / or such an assembly 10.
  • the objective is not to go below the transformation temperature Ms during the service, so as to avoid modifying the clamping by a possible phase transformation, even partial (that is to say without necessarily reaching the fourth transformation temperature Mf at which the transformation of austenitic structure into a martensitic structure is completely realized).
  • the shape memory alloy constituting component 8 is selected to allow a minimum operating temperature TSMIN of -20 ° C.
  • the shape memory alloy constituting the component 8 is chosen so as to allow a maximum operating temperature TSMAX of + 70 ° C.
  • the processing and fixing temperatures must be low enough to prevent loosening of the hairspring if the watch in which it is incorporated remains cold.
  • the component is produced in one of the "Nitinol" nickel titanium alloys, in a first form at a temperature below -40 ° C., and in a second form at an ambient temperature of between -20 ° C. and + 70 ° C, this second form to ensure the clamping required for a correct and controlled friction of the spiral.
  • Medical tools, and in particular orthodontics allow very rapid cooling to -50 ° C or -60 ° C, or even lower temperatures, to bring the component in the first form that allows its threading on the piton body. It is sufficient to reduce the assembly to the temperature of the assembly room, typically close to + 20 ° C, to ensure the tightening of the component in its second form, and immediately perform the friction torque measurement test to validate the component for its direct use in a motion.
  • the invention also relates to an assembly method that can be easily automated with a manipulator robot comprising heating means or cooling in a localized and almost instantaneous manner, by which different successive steps are carried out.
  • a first phase of opening deformation of the component 8 is carried out in a martensitic structure, then cooling or heating of the shape memory alloy component 8 is carried out, then the spiral 3 is inserted into the housing 2 and position them relative to each other in the proper position.
  • the temperatures M s and M f must be low enough not to allow the hairspring to loosen if the watch remains cold. Ideally A s and A f are around 20 ° C to 30 ° C but can also take different values.
  • the piton in its storage state, before mounting the hairspring may or may be parallel branches in which case a spacer operation is performed just before mounting, or be divergent branches, in which case it is only y present the hairspring in position. In either case, the spacing must be the result of prior deformation, so that the shape memory allows to find the pre-deformation state.
  • the so-called “austenitic” and “martensitic” phases do not exist as such, and the transition occurs at the molecular level at a transition temperature.
  • This temperature may correspond to the glass transition temperature of one of the blocks or to its melting temperature.
  • shape memory materials that can be used for the implementation of the invention may, again, be heat-activated shape memory alloys and / or magnetically activated.
  • the clamping force of the stud on the spiral is precisely controlled in a perfectly reproducible assembly.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
  • Toys (AREA)
  • Heat Treatment Of Steel (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
  • Electromechanical Clocks (AREA)
EP14194961.0A 2013-12-09 2014-11-26 Spiralfeder-spiralklötzchen-einheit für uhrwerk Active EP2881804B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP14194961.0A EP2881804B1 (de) 2013-12-09 2014-11-26 Spiralfeder-spiralklötzchen-einheit für uhrwerk
US14/873,533 US9367038B1 (en) 2013-12-09 2015-10-02 Balance spring stud for a timepiece
JP2015216431A JP6018686B2 (ja) 2014-11-26 2015-11-04 計時器のためのバランスばねスタッド
CN201510829127.9A CN105629698B (zh) 2014-11-26 2015-11-25 用于钟表的游丝外桩

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13196153.4A EP2881803B1 (de) 2013-12-09 2013-12-09 Minutenrohr einer Uhr
EP14194961.0A EP2881804B1 (de) 2013-12-09 2014-11-26 Spiralfeder-spiralklötzchen-einheit für uhrwerk

Publications (3)

Publication Number Publication Date
EP2881804A2 true EP2881804A2 (de) 2015-06-10
EP2881804A3 EP2881804A3 (de) 2015-08-26
EP2881804B1 EP2881804B1 (de) 2017-08-02

Family

ID=56046786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14194961.0A Active EP2881804B1 (de) 2013-12-09 2014-11-26 Spiralfeder-spiralklötzchen-einheit für uhrwerk

Country Status (4)

Country Link
US (1) US9367038B1 (de)
EP (1) EP2881804B1 (de)
JP (1) JP6018686B2 (de)
CN (1) CN105629698B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3432083A1 (de) * 2016-02-25 2019-01-23 ETA SA Manufacture Horlogère Suisse Spiralfeder für mechanisches uhrwerk
EP3252542B1 (de) * 2016-06-01 2022-05-18 Rolex Sa Teil zur befestigung einer unruhspirale
US20220155726A1 (en) * 2018-09-03 2022-05-19 Rolex Sa Method for producing friction by indenting
EP4411489A1 (de) * 2023-01-31 2024-08-07 ETA SA Manufacture Horlogère Suisse Vorrichtung zum einstellen und einstellen der aktiven länge einer spiralfeder für uhrwerk, und verfahren zum einstellen der aktiven länge

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10338259B2 (en) 2015-12-14 2019-07-02 Covidien Lp Surgical adapter assemblies and wireless detection of surgical loading units
EP3252541A1 (de) * 2016-06-01 2017-12-06 Rolex Sa Teil zum befestigen einer unruhspiralfeder
EP4202569A1 (de) * 2021-12-21 2023-06-28 Montres Breguet S.A. Armbanduhrengehäuse mit drehbarem aussenring

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH317531A (fr) * 1954-04-21 1956-11-30 Ebauches Bettlach Sa Piton
CH395869A (fr) * 1963-07-05 1966-01-14 Fontainemelon Horlogerie Dispositif de fixation de l'extrémité extérieure d'un spiral d'horlogerie
US5617377A (en) * 1995-12-13 1997-04-01 Perret, Jr.; Gerard A. Watchband connector pin utilizing shape memory material
US6612734B1 (en) * 1999-07-29 2003-09-02 Seiko Instruments Inc. Mechanical timepiece with stud adjustment mechanism
EP1302821A3 (de) * 2001-10-10 2010-05-05 Franck Muller-Watchland SA Spiralfeder für Zeitmessgerät
EP1515200A1 (de) * 2003-09-10 2005-03-16 Patek Philippe S.A. Spiralfeder für Uhren
EP1580625A1 (de) * 2004-03-23 2005-09-28 Asulab S.A. Vorrichtung und Verfahren zur Fixierung einer Palette auf einem Hemmungsanker in einem Uhrwerk
JP2006214822A (ja) * 2005-02-02 2006-08-17 Seiko Instruments Inc 緩急可能なひげぜんまいを含む機械式時計
WO2008029158A2 (en) * 2006-09-08 2008-03-13 Gideon Levingston Thermally compensating balance wheel
EP2184653A1 (de) * 2008-11-06 2010-05-12 Montres Breguet S.A. Spiralfeder mit Endkurvenerhöhung aus mikro-bearbeitbarem Material
EP2804055B1 (de) * 2013-05-16 2016-03-09 Blancpain SA. Einheit aus einem Spiralklötzchen und einem Spiralklötzchenträger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3432083A1 (de) * 2016-02-25 2019-01-23 ETA SA Manufacture Horlogère Suisse Spiralfeder für mechanisches uhrwerk
EP3252542B1 (de) * 2016-06-01 2022-05-18 Rolex Sa Teil zur befestigung einer unruhspirale
US12045013B2 (en) 2016-06-01 2024-07-23 Rolex Sa Fastening part for a hairspring
US20220155726A1 (en) * 2018-09-03 2022-05-19 Rolex Sa Method for producing friction by indenting
US11507021B2 (en) * 2018-09-03 2022-11-22 Rolex Sa Method for producing friction by indenting
EP4411489A1 (de) * 2023-01-31 2024-08-07 ETA SA Manufacture Horlogère Suisse Vorrichtung zum einstellen und einstellen der aktiven länge einer spiralfeder für uhrwerk, und verfahren zum einstellen der aktiven länge

Also Published As

Publication number Publication date
US20160147196A1 (en) 2016-05-26
EP2881804B1 (de) 2017-08-02
US9367038B1 (en) 2016-06-14
EP2881804A3 (de) 2015-08-26
JP6018686B2 (ja) 2016-11-02
CN105629698B (zh) 2018-04-03
CN105629698A (zh) 2016-06-01
JP2016099345A (ja) 2016-05-30

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