EP1366391B1 - Uhrwerk mit magnetischen massen und einer nichtmagnetischen beschichtung zum bedecken von feststehenden teilen des rohwerks - Google Patents

Uhrwerk mit magnetischen massen und einer nichtmagnetischen beschichtung zum bedecken von feststehenden teilen des rohwerks Download PDF

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Publication number
EP1366391B1
EP1366391B1 EP02709965A EP02709965A EP1366391B1 EP 1366391 B1 EP1366391 B1 EP 1366391B1 EP 02709965 A EP02709965 A EP 02709965A EP 02709965 A EP02709965 A EP 02709965A EP 1366391 B1 EP1366391 B1 EP 1366391B1
Authority
EP
European Patent Office
Prior art keywords
magnetic
generator
micro
movement
parts
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
EP02709965A
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English (en)
French (fr)
Other versions
EP1366391A1 (de
Inventor
Frédéric Leuba
Denis Burdet
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
Priority to EP02709965A priority Critical patent/EP1366391B1/de
Publication of EP1366391A1 publication Critical patent/EP1366391A1/de
Application granted granted Critical
Publication of EP1366391B1 publication Critical patent/EP1366391B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/008—Mounting, assembling of components

Definitions

  • the present invention relates to a movement for a timepiece comprising a functional unit comprising magnetic masses, said unit being located within said movement and therefore surrounded at least partially of fixed non-magnetic blank parts covered with a finish coating.
  • the subject of this application concerns a timepiece of which said functional unit is a microgenerator.
  • non-magnetic material or “non-magnetic” material that is not ferromagnetic, that is not or that very weakly paramagnetic, and which will eventually show diamagnetism low.
  • close to the microgenerator is meant the entire region microgenerator device in which the magnetic flux of the masses magnetized has significant value.
  • the Applicant has found the existence of sources of magnetic disturbances at inside the watch movement. Indeed, the interest of such a timepiece increases when its energy consumption decreases, that is to say when by example the generator output increases. Based on this observation, the Applicant has highlighted that not only ferromagnetic masses, such as rough parts or steel supplies, but also the presence thin layers of ferromagnetic coating on fixed blank parts not magnetic, located near the generator, exert on the latter a parasitic magnetic force thus reducing its efficiency.
  • Document US-A-4 482 255 describes an electronic watch comprising a compass function in which the rotor should be shielded so as not to disturb the field sensor magnetic.
  • the present invention therefore aims to improve the timepiece above by avoiding the drawbacks described above, in particular thanks to a simple and inexpensive improvement in manufacturing.
  • the invention relates to a timepiece of the type indicated above, characterized by the fact that said finishing coating covering said fixed blank parts located near said functional unit have essentially non-magnetic properties.
  • the various parts blanks of the blank are covered with a non-magnetic nickel-based alloy providing effective protection against the risks of oxidation while ensuring a very correct aesthetic appearance. It should be noted that this type of alloy has excellent adhesion to the surface of the blank.
  • said first layer based on nickel is covered with a second metallic layer, in particular to modify the aesthetic aspect.
  • a gold-based alloy to give a golden color on the rough, which generally corresponds to a level of more luxurious timepiece finish.
  • the first layer based nickel also provides a diffusion barrier function, preventing gold from to diffuse in the mass of the blank.
  • Figure 1 shows a view of the generator 1 comprising a rotor 2 having two flanges 3, only one of which is shown, arranged on either side of three flat coils 4 forming the stator and offset substantially by 120 degrees one by relative to the other relative to the axis of the rotor 2, in the same plane orthogonal to this one.
  • a printed circuit 6 serves in particular as a support for the coils 4 and for an integrated circuit 7.
  • the power supply for integrated circuit 7, with low energy consumption, is provided by the electric microgenerator 1 - consisting of the shaft assembly 8 of the rotor 2, flanges 3, magnets 5 and coils 4 - driven via a kinematic link 9 by a barrel device 10.
  • the passage of the magnets 5 near the coils 4 generates a substantially sinusoidal induced voltage across these coils 4.
  • the Applicant has shown during its research that the fact to use a conventional magnetic material for the realization of the coating of finishing the blank has a significant influence on the performance of the micro-generator. Surprisingly, the exclusive use of non-magnetic materials for the coating operates a significant reduction in magnetic disturbances, the magnetic coupling between the magnetized masses 5 and the coils 4 and therefore the efficiency of microgenerator 1 thus being increased.
  • the timepiece movement according to the invention thus comprises at least fixed parts of the blank 11, 12 made of brass or any other material suitable with non-magnetic properties. Furthermore, in accordance with the invention, the blank is covered with a metal coating for protection against oxidation. For the above reasons, this metallic coating is also made of a material with no magnetic properties, such as an alloy non-magnetic nickel with phosphorus or tin. When the movement is intended to be mounted in a timepiece with high added value, we can use a non-magnetic rhodium-based alloy for coating said fixed parts 11, 12 of the blank.
  • a covering comprising at least two layers of different materials. Indeed, if we want to make a movement with a golden finish on the blank, it should be applied to said fixed parts 11, 12 of roughing a first treatment in order to cover them with a protective undercoat, generally made of nickel. We thus obtains a first layer of protection against oxidation which fills also a diffusion barrier function, preventing gold from diffusing into the mass of the blank.
  • this thin underlay consists here of an alloy non-magnetic, preferably based on nickel, in accordance with the invention.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Magnetic Treatment Devices (AREA)
  • Adornments (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Coating Apparatus (AREA)

Claims (5)

  1. Gangwerk für Zeitmessgerät, mit einem Mikrogenerator (1), der magnetische Massen (5) aufweist und wenigstens teilweise von nichtmagnetischen und mit einer Oberflächenbeschichtung bedeckten, festen Rohwerkteilen (11, 12) umgeben ist, dadurch gekennzeichnet, dass die Oberflächenbeschichtung, die die in der Nähe des Mikrogenerators (1) befindlichen festen Rohwerkteile (11, 12) bedeckt, im Wesentlichen nichtmagnetische Eigenschaften aufweist.
  2. Gangwerk für Zeitmessgerät nach Anspruch 1, dadurch gekennzeichnet, dass die Beschichtung wenigstens zwei Metalllagen umfasst, wovon wenigstens jene, die sich direkt in Kontakt mit den festen Rohwerkteilen (11, 12) befindet, Nickel enthält, um eine nichtmagnetische Legierung zu bilden.
  3. Gangwerk für Zeitmessgerät nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der Mikrogenerator (1) einen Rotor (2) umfasst, der zwei Flansche (3) aufweist, die jeweils im Wesentlichen die Form einer Scheibe haben und jeweils auf ihrer Fläche gegenüber dem anderen Flansch eine gerade Anzahl magnetischer Massen (5) tragen, wobei der Mikrogenerator außerdem ein elektronisches Modul (6) aufweist, das wenigstens eine Statorspule (4) enthält, die teilweise zwischen die zwei Flansche (3) eingefügt ist, und dass der Mikrogenerator sich wenigstens teilweise in einem Volumen befindet, das durch die orthogonalen Vorsprünge der nichtmagnetischen, festen Rohwerkteile (11, 12) begrenzt ist.
  4. Gangwerk für Zeitmessgerät, mit einer funktionalen Einheit (1), die magnetische Massen (5) umfasst und die Erfassung des Vorhandenseins eines äußeren Magnetfeldes ermöglicht, wobei die funktionale Einheit (1) wenigstens teilweise von nichtmagnetischen und mit einer Oberflächenbeschichtung bedeckten, festen Rohwerkteilen (11, 12) umgeben ist, dadurch gekennzeichnet, dass die Oberflächenbeschichtung, die die in der Nähe der funktionalen Einheit (1) befindlichen festen Rohwerkteile (11, 12) bedeckt, im Wesentlichen nichtmagnetische Eigenschaften aufweist.
  5. Gangwerk für Zeitmessgerät nach Anspruch 4, dadurch gekennzeichnet, dass die funktionale Einheit eine Kompassfunktion gewährleistet.
EP02709965A 2001-02-28 2002-02-14 Uhrwerk mit magnetischen massen und einer nichtmagnetischen beschichtung zum bedecken von feststehenden teilen des rohwerks Expired - Lifetime EP1366391B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02709965A EP1366391B1 (de) 2001-02-28 2002-02-14 Uhrwerk mit magnetischen massen und einer nichtmagnetischen beschichtung zum bedecken von feststehenden teilen des rohwerks

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP01200752A EP1237058A1 (de) 2001-02-28 2001-02-28 Benutzung einer nichtmagnetischen Schicht zum Abdecken von Teilen in einem Uhrengangwerk
EP01200752 2001-02-28
EP02709965A EP1366391B1 (de) 2001-02-28 2002-02-14 Uhrwerk mit magnetischen massen und einer nichtmagnetischen beschichtung zum bedecken von feststehenden teilen des rohwerks
PCT/CH2002/000089 WO2002071159A1 (fr) 2001-02-28 2002-02-14 Utilisation d'un revetement amagnetique pour recouvrir des pieces dans un mouvement d'horlogerie

Publications (2)

Publication Number Publication Date
EP1366391A1 EP1366391A1 (de) 2003-12-03
EP1366391B1 true EP1366391B1 (de) 2004-11-17

Family

ID=8179952

Family Applications (2)

Application Number Title Priority Date Filing Date
EP01200752A Withdrawn EP1237058A1 (de) 2001-02-28 2001-02-28 Benutzung einer nichtmagnetischen Schicht zum Abdecken von Teilen in einem Uhrengangwerk
EP02709965A Expired - Lifetime EP1366391B1 (de) 2001-02-28 2002-02-14 Uhrwerk mit magnetischen massen und einer nichtmagnetischen beschichtung zum bedecken von feststehenden teilen des rohwerks

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP01200752A Withdrawn EP1237058A1 (de) 2001-02-28 2001-02-28 Benutzung einer nichtmagnetischen Schicht zum Abdecken von Teilen in einem Uhrengangwerk

Country Status (8)

Country Link
US (2) US20070025188A1 (de)
EP (2) EP1237058A1 (de)
JP (1) JP2004521340A (de)
CN (1) CN1252549C (de)
AT (1) ATE282844T1 (de)
DE (1) DE60201978T2 (de)
HK (1) HK1064452A1 (de)
WO (1) WO2002071159A1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7514393B2 (en) * 2003-11-21 2009-04-07 Castrol Limited Preparation of functional monomers for grafting to low molecular weight polyalkenes and their use in the preparation of dispersants and lubricating oil compositions containing dispersant polyalkenes
US8703872B2 (en) * 2005-03-11 2014-04-22 Castrol Limited Multiple function graft polymer
US10190070B2 (en) * 2005-04-28 2019-01-29 Castrol Limited Multiple-function dispersant graft polymer
EP1904901B2 (de) * 2005-06-28 2013-07-10 ETA SA Manufacture Horlogère Suisse Verstärktes mikromechanisches teil
TWI438588B (zh) * 2006-03-24 2014-05-21 Eta Sa Mft Horlogere Suisse 由絕緣材料製成的微機械零件及其製造方法
FR2903823B1 (fr) * 2006-07-12 2008-09-05 Messier Dowty Sa Element actif de machine electromagnetique, procede de fabrication d'un tel element actif, et machine electromagnetique comportant un tel element actif.
ATE555428T1 (de) 2009-06-16 2012-05-15 Eta Sa Mft Horlogere Suisse Kleiner elektromechanischer signalwandler, insbesondere uhrgenerator
EP2887150A1 (de) * 2013-12-20 2015-06-24 ETA SA Manufacture Horlogère Suisse Optimiertes Federgehäuse einer Uhr
WO2017102661A1 (fr) * 2015-12-18 2017-06-22 Rolex Sa Procede de fabrication d'un composant horloger
EP3273304B1 (de) * 2016-07-19 2021-11-10 Nivarox-FAR S.A. Bauteil für uhrwerk
EP3273306A1 (de) * 2016-07-19 2018-01-24 Nivarox-FAR S.A. Bauteil für uhrwerk
EP3273307A1 (de) 2016-07-19 2018-01-24 Nivarox-FAR S.A. Bauteil für uhrwerk
EP3438763B1 (de) * 2017-08-04 2020-05-06 The Swatch Group Research and Development Ltd Uhrwerk, das mit einem elektromagnetischen transducer ausgestattet ist

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US385945A (en) * 1888-07-10 Alloy
CH1246668A4 (de) * 1968-08-19 1972-11-30
CH600407B5 (de) * 1970-10-02 1978-06-15 Suisse Horlogerie Rech Lab
US3737746A (en) * 1972-04-19 1973-06-05 Gen Time Corp Quartz crystal controlled stepper motor
GB1433201A (en) * 1972-05-30 1976-04-22 Suisse Pour Lindustrie Horloge Drive systems for electric chromometers
JPS5174663A (de) * 1974-12-23 1976-06-28 Seiko Instr & Electronics
JPS51134816A (en) * 1975-05-16 1976-11-22 Seiko Instr & Electronics Ltd Converter for an electronic clock
JPS5782786A (en) * 1980-11-11 1982-05-24 Seiko Instr & Electronics Ltd Electronic wrist watch
FR2515838A1 (fr) * 1981-10-30 1983-05-06 Omega Brandt & Freres Sa Louis Piece d'horlogerie comportant un dispositif d'orientation
US4412144A (en) * 1982-04-08 1983-10-25 Moskovsky Energetichesky Institut Single-phase step motor
CH662034GA3 (de) * 1985-09-06 1987-09-15
US5172349A (en) * 1989-04-21 1992-12-15 Eta Sa Fabriques D'ebauches Electronic timepiece with analog display
US5673692A (en) * 1995-02-03 1997-10-07 Biosignals Ltd. Co. Single site, multi-variable patient monitor
EP0851322B1 (de) * 1996-12-23 2000-05-17 Ronda Ag Mikrogenerator, Modul und Uhrwerk, enthaltend einen solchen Mikrogenerator
US6099624A (en) * 1997-07-09 2000-08-08 Elf Atochem North America, Inc. Nickel-phosphorus alloy coatings
US6302844B1 (en) * 1999-03-31 2001-10-16 Walker Digital, Llc Patient care delivery system
US6893396B2 (en) * 2000-03-01 2005-05-17 I-Medik, Inc. Wireless internet bio-telemetry monitoring system and interface
JP2004085434A (ja) * 2002-08-28 2004-03-18 Seiko Instruments Inc 時計

Also Published As

Publication number Publication date
US20040042349A1 (en) 2004-03-04
CN1498362A (zh) 2004-05-19
EP1237058A1 (de) 2002-09-04
CN1252549C (zh) 2006-04-19
HK1064452A1 (en) 2005-01-28
DE60201978D1 (de) 2004-12-23
ATE282844T1 (de) 2004-12-15
US20070025188A1 (en) 2007-02-01
WO2002071159A1 (fr) 2002-09-12
EP1366391A1 (de) 2003-12-03
JP2004521340A (ja) 2004-07-15
DE60201978T2 (de) 2005-12-15

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