EP3968097A1 - Uhrenreihe und ihr herstellungsverfahren - Google Patents

Uhrenreihe und ihr herstellungsverfahren Download PDF

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Publication number
EP3968097A1
EP3968097A1 EP20195332.0A EP20195332A EP3968097A1 EP 3968097 A1 EP3968097 A1 EP 3968097A1 EP 20195332 A EP20195332 A EP 20195332A EP 3968097 A1 EP3968097 A1 EP 3968097A1
Authority
EP
European Patent Office
Prior art keywords
component
assembly
layer
watch assembly
watch
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.)
Pending
Application number
EP20195332.0A
Other languages
English (en)
French (fr)
Inventor
M. Jonas VANNOD
M. Christian CHARBON
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 EP20195332.0A priority Critical patent/EP3968097A1/de
Priority to US17/379,127 priority patent/US20220075322A1/en
Priority to JP2021127245A priority patent/JP7284222B2/ja
Priority to CN202111055595.7A priority patent/CN114237003A/zh
Publication of EP3968097A1 publication Critical patent/EP3968097A1/de
Pending 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
    • G04B18/00—Mechanisms for setting frequency
    • G04B18/006—Mechanisms for setting frequency by adjusting the devices fixed on 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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/06—Manufacture or mounting processes
    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • 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
    • G04B17/063—Balance construction

Definitions

  • the invention relates to a watch assembly comprising two components, in particular a balance wheel and a visselotte, assembled under stress. It also relates to its manufacturing process.
  • deformations can then generate defects in the material, such as cracks or incipient cracks. They can also generate defects in the protective layer that covers the balance wheel.
  • the purpose of this layer is to give a particular appearance and to improve the resistance to tarnishing and corrosion of the balance wheels.
  • the coating is usually gilding with an undercoat of nickel to combine aesthetic appearance and corrosion resistance properties.
  • the assembly of the weights on the balance wheel will generate defects in this protective layer at the level of the areas stressed during the deformation of the arm as well as in the support or gripping areas where the layer can be locally damaged.
  • the protective layer is then no longer impervious to aggressive agents such as ammonia or chlorine, which can cause stress corrosion of the UNDERLYING material.
  • the object of the present invention is to overcome the aforementioned drawbacks by proposing a method of manufacturing a watch assembly comprising two components assembled under stress such as the balance wheel/bolt pair, including a step of depositing a protective layer after the step of assembling the two components.
  • This layer can essentially consist of SiO 2 , Al 2 O 3 , Rh, Au, Ni or NiP or else a stack of several layers of these materials.
  • This layer after assembly makes it possible to reinforce the barrier effect of the layer deposited before assembly, in particular in the zones potentially damaged during assembly.
  • This protective layer deposited after assembly guarantees the absence of surface defects due to assembly on the finished product. It fills in potential cracks or incipient cracks, which avoids contact between the aggressive medium and the underlying material.
  • the protective layer has a thickness comprised between 20 nm and 3 ⁇ m, preferably between 100 nm and 500 nm. This thin thickness makes it possible to avoid welding the slider to the balance, which would have an impact on the adjustment functionality of the sliders.
  • the present invention also relates to the watch assembly comprising a first component and a second component assembled under stress, with at least part of the surface of the assembly watchmaker coated with the protective layer intended to cover defects after assembly.
  • the invention relates to a watch assembly comprising at least two components assembled under stress.
  • the first component is a rocker arm 2 comprising an elastic arm 2a delimiting a slot 4 receiving during assembly the second component which is a screws 3 also visible at the picture 2 .
  • the second component which is a screws 3 also visible at the picture 2 .
  • It could also be a driven element such as a peg in a chainring or a pendulum on an axle, etc.
  • the components can be made of a material chosen from the list including copper, copper alloys such as brass or nickel silver, aluminium, aluminum alloys, titanium, titanium alloys, carbon steel and ferritic and austenitic stainless steels.
  • the watch assembly is covered at least partially with a protective layer after assembly intended to cover any defects such as cracks, incipient cracks, tearing of material, resulting from the assembly or possibly already present before assembly.
  • the figures 4A and 4B represent respectively using an electron microscopy view and a schematic view of this same view, the formation of cracks 8 in the base material of one of the components (reference 2) as well as in a protective layer , called first layer 6, deposited before assembly.
  • a protective layer 7, referred to as the second layer is deposited on the cracked surface to form a barrier sealed against the external environment after assembly.
  • the picture 3 schematically represents the layers deposited on the watch assembly 1.
  • one or more layers can optionally be deposited on at least one of the two components of the watch assembly.
  • the base material of the watch assembly can thus be coated with a first layer 6 and always optionally with a sub-layer 5 below the first layer 6.
  • the first layer 6 can comprise rhodium or gold pure or comprising traces of elements such as cobalt or nickel and the underlayer 5 may comprise nickel such as NiP or pure galvanic Ni, or pure gold or with traces of elements.
  • the first layer has a thickness between 100 nm and 2 ⁇ m and the underlayer has a thickness between 100 nm and 2 ⁇ m.
  • the protective layer 7 which is more particularly the subject of the invention is a barrier layer deposited after assembly.
  • This layer is formed of a single layer or of a stack of layers.
  • Each layer comprises respectively SiO 2 , Al 2 O 3 , Rh, Au, Ni or NiP at low (2-4% by weight), medium (5-9% by weight) or high P (10-13% in weight).
  • each layer is respectively made up of SiO 2 , Al 2 O 3 , Rh, Au, Ni or NiP at low (2-4% by weight), medium (5-9% by weight) or high P (10- 13% by weight).
  • the protective layer has a thickness comprised between 20 nm and 3 ⁇ m, preferably between 100 nm and 500 nm.
  • all of the layers have a thickness of between 20 nm and 3 ⁇ m, preferably between 100 nm and 500 nm.
  • At least part of the surface of the assembly is coated with the protective layer intended to cover the defects at the end of the assembly.
  • the surface of the component subjected to deformation during assembly is coated.
  • the entire outer surface of the watch assembly is coated with the protective layer.
  • the protective layer 7 deposited after assembly is thus devoid of defects and more particularly of cracks and incipient cracks.
  • the protective layer is deposited by ALD (for Atomic Layer Deposition in English), PVD (for Physical Vapor Deposition in English), CVD (for Chemical Vapor Deposition in English), chemical or galvanic deposition.
  • ALD Atomic Layer Deposition in English
  • PVD for Physical Vapor Deposition in English
  • CVD for Chemical Vapor Deposition in English
  • chemical or galvanic deposition for Chemical Vapor Deposition in English
  • the method may further comprise a step a′) of depositing the first layer 6 on at least part of the first component and/or of the second component before step b) of assembly.
  • the method may also include a step a") of depositing the underlayer 5 on said at least part of the first component and/or of the second component before step a').
  • the underlayer and the first layer can also be deposited by ALD, PVD, CVD, chemical or galvanic deposition.
  • the method may also include a step a'") of heat treatment intended to improve the adhesion of the first layer and of the underlayer if the latter are present. This step takes place before step b) of assembly.
  • the heat treatment is carried out between 150 and 300° C. for 30 minutes to 5 hours.
  • the method comprises a step d) of this same heat treatment after step c) of depositing the protective layer.
  • the method comprises a step a'") of this heat treatment before step b) of assembly and a step d) of this heat treatment after step c) of depositing the protective layer.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physical Vapour Deposition (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
EP20195332.0A 2020-09-09 2020-09-09 Uhrenreihe und ihr herstellungsverfahren Pending EP3968097A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP20195332.0A EP3968097A1 (de) 2020-09-09 2020-09-09 Uhrenreihe und ihr herstellungsverfahren
US17/379,127 US20220075322A1 (en) 2020-09-09 2021-07-19 Timepiece assembly and method for manufacturing the same
JP2021127245A JP7284222B2 (ja) 2020-09-09 2021-08-03 計時器用アセンブリー及びその製造方法
CN202111055595.7A CN114237003A (zh) 2020-09-09 2021-09-09 时计组件及其制造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20195332.0A EP3968097A1 (de) 2020-09-09 2020-09-09 Uhrenreihe und ihr herstellungsverfahren

Publications (1)

Publication Number Publication Date
EP3968097A1 true EP3968097A1 (de) 2022-03-16

Family

ID=72470197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20195332.0A Pending EP3968097A1 (de) 2020-09-09 2020-09-09 Uhrenreihe und ihr herstellungsverfahren

Country Status (4)

Country Link
US (1) US20220075322A1 (de)
EP (1) EP3968097A1 (de)
JP (1) JP7284222B2 (de)
CN (1) CN114237003A (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH248536A (fr) * 1945-08-15 1947-05-15 Beyeler & Cie G Procédé pour la fixation d'éléments décoratifs formant index sur un cadran de montre.
CH621667GA3 (en) * 1977-04-27 1981-02-27 Electronic support
CH699882A2 (fr) * 2008-11-06 2010-05-14 Montres Breguet Sa Spiral à élévation de courbe en matériau micro-usinable.
CH703462A2 (fr) * 2010-07-19 2012-01-31 Nivarox Sa Balancier à réglage d'inertie avec insert
CH705238A2 (fr) 2011-07-15 2013-01-15 Nivarox Sa Balancier à réglage d'inertie pour mouvement d'horlogerie.
EP3185086A1 (de) * 2015-12-21 2017-06-28 The Swatch Group Research and Development Ltd. Applique für zifferblatt einer uhr
CH713329A1 (fr) * 2016-12-16 2018-06-29 Mft Et Fabrique De Montres Et Chronometres Ulysse Nardin Le Locle S A Fixation par oxydation de deux pièces d'un composant horloger, notamment d'une ancre d'échappement.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS578870B2 (de) * 1973-11-21 1982-02-18
JP5080935B2 (ja) 2007-10-23 2012-11-21 株式会社岡村製作所 組合せ家具
EP2104005A1 (de) * 2008-03-20 2009-09-23 Nivarox-FAR S.A. Composite-Unruh und Herstellungsverfahren dafür
DE102013114211B3 (de) * 2013-07-22 2014-10-09 Damasko Gmbh Spiralfeder für mechanische Uhrwerke
JP6625451B2 (ja) 2016-03-08 2019-12-25 シチズン時計株式会社 テン輪
EP3564758B1 (de) * 2018-05-02 2021-06-30 Omega SA Herstellungsverfahren von uhrenkomponenten, das eine schmuckbeschichtung mit aventurinquarz umfasst
EP3667433B1 (de) * 2018-12-12 2023-02-01 Nivarox-FAR S.A. Spiralfeder und ihr herstellungsverfahren

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH248536A (fr) * 1945-08-15 1947-05-15 Beyeler & Cie G Procédé pour la fixation d'éléments décoratifs formant index sur un cadran de montre.
CH621667GA3 (en) * 1977-04-27 1981-02-27 Electronic support
CH699882A2 (fr) * 2008-11-06 2010-05-14 Montres Breguet Sa Spiral à élévation de courbe en matériau micro-usinable.
CH703462A2 (fr) * 2010-07-19 2012-01-31 Nivarox Sa Balancier à réglage d'inertie avec insert
CH705238A2 (fr) 2011-07-15 2013-01-15 Nivarox Sa Balancier à réglage d'inertie pour mouvement d'horlogerie.
EP3185086A1 (de) * 2015-12-21 2017-06-28 The Swatch Group Research and Development Ltd. Applique für zifferblatt einer uhr
CH713329A1 (fr) * 2016-12-16 2018-06-29 Mft Et Fabrique De Montres Et Chronometres Ulysse Nardin Le Locle S A Fixation par oxydation de deux pièces d'un composant horloger, notamment d'une ancre d'échappement.

Also Published As

Publication number Publication date
US20220075322A1 (en) 2022-03-10
JP7284222B2 (ja) 2023-05-30
CN114237003A (zh) 2022-03-25
JP2022045899A (ja) 2022-03-22

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