EP1366391A1 - Utilisation d'un revetement amagnetique pour recouvrir des pieces dans un mouvement d'horlogerie - Google Patents
Utilisation d'un revetement amagnetique pour recouvrir des pieces dans un mouvement d'horlogerieInfo
- Publication number
- EP1366391A1 EP1366391A1 EP02709965A EP02709965A EP1366391A1 EP 1366391 A1 EP1366391 A1 EP 1366391A1 EP 02709965 A EP02709965 A EP 02709965A EP 02709965 A EP02709965 A EP 02709965A EP 1366391 A1 EP1366391 A1 EP 1366391A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnetic
- parts
- microgenerator
- generator
- movement
- 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
Links
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 in particular a functional unit comprising magnetic masses, said functional unit being located within said movement and therefore at least partially surrounded by non-magnetic blank parts covered with a finishing coating. .
- the subject of the present application relates to a timepiece of which said functional unit is a microgenerator.
- non-magnetic or “non-magnetic” material is understood to mean a material which is not ferromagnetic, which is not or only very slightly paramagnetic, and which possibly will have a weak diamagnetism.
- close to the microgenerator is meant the entire peripheral region of the microgenerator in which the magnetic flux of the magnetized masses has a significant value.
- Patent CH 597636 describes a watch movement in which a spring drives, through a set of gears, on the one hand the needles and on the other hand a generator producing an alternating current.
- the generator supplies power to an electronic circuit comprising in particular a stabilized quartz oscillator and making it possible to regulate the operation of the generator and therefore the operation of the hands.
- Such a watch therefore combines the advantages of a mechanical watch with the precision of a quartz watch.
- the Applicant has found the existence of sources of magnetic disturbances within the watch movement. Indeed, the interest of such a timepiece increases when its energy consumption decreases, that is to say when for example the efficiency of the generator increases.
- the applicant has highlighted that not only ferromagnetic masses, such as rough parts or steel supplies, but also the presence of thin layers of ferromagnetic coating on non magnetic rough parts, located near the generator, exert a parasitic magnetic force on the latter thus reducing its efficiency.
- the present invention therefore aims to improve the aforementioned timepiece by avoiding the drawbacks described above, in particular by means of a simple and inexpensive improvement during manufacture.
- the invention relates to a timepiece of the type indicated above, characterized in that said finishing coating covering said blank parts located near said functional unit has essentially non-magnetic properties.
- the various parts of the blank are covered with a non-magnetic alloy based on nickel ensuring effective protection against the risks of oxidation while guaranteeing 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 nickel-based layer is covered with a second metallic layer, in particular to modify the aesthetic appearance.
- a gold-based alloy to give a golden color to the blank, which generally corresponds to a more luxurious level of finish of the timepiece.
- the first nickel-based layer also provides a diffusion barrier function, preventing the gold from diffusing into the bulk of the blank.
- FIG. 1 is a simplified top view of the partially mounted movement of a timepiece comprising a generator
- FIG. 2 is a cross-sectional view of the movement along line II-II of Figure 1.
- FIG. 1 represents 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 thereto.
- a printed circuit 6 serves as a support in particular for the coils 4 and for an integrated circuit 7.
- the integrated circuit 7, with low energy consumption, is supplied 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.
- On the cross section along the line ll-ll of Figure 1 shown in Figure 2 appear rough parts 11 and 12 of brass.
- the shaft 8 of the rotor 2 is pivotally mounted in two stones 13, 14, one of which is driven into a gear train 11 and the other into the plate 12 of the movement. It is clear from this figure 2 that, due to their immediate proximity to the magnets 5, said blank parts 11, 12 are partially immersed in the magnetic field of these magnets.
- the Applicant has shown during its research that the fact of using a conventional magnetic material for producing the finishing coating of the blank has a significant influence on the performance of the microgenerator. Surprisingly, the exclusive use of non-magnetic materials for the coating results in a significant reduction in magnetic disturbances, the magnetic coupling between the magnetized masses 5 and the coils 4 and therefore the efficiency of the microgenerator 1 thus being increased.
- the timepiece movement according to the invention thus comprises at least parts of the blank 11, 12 made of brass or any other suitable material having non-magnetic properties.
- the blank is covered with a metal coating for protection against oxidation.
- this metallic coating is also made of a material having no magnetic properties, such as an amagnetic alloy of nickel with phosphorus or tin.
- a non-magnetic alloy based on rhodium can be used to coat said parts 11, 12 of the blank.
- a coating comprising at least two layers of different materials.
- a first treatment in order to cover them with a protective undercoat, generally made in nickel.
- a first layer of protection against oxidation is thus obtained which also fulfills a function of diffusion barrier, preventing gold from diffusing into the mass of the blank.
- this fine sublayer here consists of a non-magnetic alloy preferably based on nickel, in accordance with the invention.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Clocks (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Adornments (AREA)
- Magnetic Treatment Devices (AREA)
- Electromechanical Clocks (AREA)
- Coating Apparatus (AREA)
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02709965A EP1366391B1 (fr) | 2001-02-28 | 2002-02-14 | Mouvement d'horlogerie a masses aimantees et utilisant un revetement non magnetique pour recouvrir des parties fixes d'ebauche |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP01200752 | 2001-02-28 | ||
| EP01200752A EP1237058A1 (fr) | 2001-02-28 | 2001-02-28 | Utilisation d'un revêtement amagnétique pour recouvrir des pièces dans un mouvement d'horlogerie |
| EP02709965A EP1366391B1 (fr) | 2001-02-28 | 2002-02-14 | Mouvement d'horlogerie a masses aimantees et utilisant un revetement non magnetique pour recouvrir des parties fixes d'ebauche |
| 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 true EP1366391A1 (fr) | 2003-12-03 |
| EP1366391B1 EP1366391B1 (fr) | 2004-11-17 |
Family
ID=8179952
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01200752A Withdrawn EP1237058A1 (fr) | 2001-02-28 | 2001-02-28 | Utilisation d'un revêtement amagnétique pour recouvrir des pièces dans un mouvement d'horlogerie |
| EP02709965A Expired - Lifetime EP1366391B1 (fr) | 2001-02-28 | 2002-02-14 | Mouvement d'horlogerie a masses aimantees et utilisant un revetement non magnetique pour recouvrir des parties fixes d'ebauche |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01200752A Withdrawn EP1237058A1 (fr) | 2001-02-28 | 2001-02-28 | Utilisation d'un revêtement amagnétique pour recouvrir des pièces dans un mouvement d'horlogerie |
Country Status (7)
| Country | Link |
|---|---|
| US (2) | US20070025188A1 (fr) |
| EP (2) | EP1237058A1 (fr) |
| JP (1) | JP2004521340A (fr) |
| CN (1) | CN1252549C (fr) |
| AT (1) | ATE282844T1 (fr) |
| DE (1) | DE60201978T2 (fr) |
| WO (1) | WO2002071159A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8179012B2 (en) | 2009-06-16 | 2012-05-15 | ETA SA Manufacture Horlogére Suisse | Electro-mechanical transducer of small dimensions, in particular a timepiece generator |
Families Citing this family (12)
| 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 |
| EP1874837A1 (fr) * | 2005-04-28 | 2008-01-09 | Castrol Limited | Polymere greffe dispersant multifonction |
| ES2318778T3 (es) * | 2005-06-28 | 2009-05-01 | Eta Sa Manufacture Horlogere Suisse | Pieza de micromecanica reforzada. |
| KR20070096834A (ko) * | 2006-03-24 | 2007-10-02 | 에타 쏘시에떼 아노님 마누팍투레 홀로게레 스위세 | 절연성 물질로 만들어지는 미세-기계 부분 및 상기 부분을제조하기 위한 방법 |
| 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. |
| EP2887150A1 (fr) * | 2013-12-20 | 2015-06-24 | ETA SA Manufacture Horlogère Suisse | Barillet d'horlogerie optimisé |
| WO2017102661A1 (fr) * | 2015-12-18 | 2017-06-22 | Rolex Sa | Procede de fabrication d'un composant horloger |
| EP3273304B1 (fr) * | 2016-07-19 | 2021-11-10 | Nivarox-FAR S.A. | Pièce pour mouvement d'horlogerie |
| EP3273306B1 (fr) * | 2016-07-19 | 2025-08-27 | Nivarox-FAR S.A. | Pièce pour mouvement d'horlogerie |
| EP3273307B1 (fr) | 2016-07-19 | 2025-04-30 | Nivarox-FAR S.A. | Pièce pour mouvement d'horlogerie |
| EP3438763B1 (fr) * | 2017-08-04 | 2020-05-06 | The Swatch Group Research and Development Ltd | Mouvement horloger muni d'un transducteur électromagnétique |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US385945A (en) * | 1888-07-10 | Alloy | ||
| CH1246668A4 (fr) * | 1968-08-19 | 1972-11-30 | ||
| CH600407B5 (fr) * | 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 (fr) * | 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 (fr) * | 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 (fr) * | 1996-12-23 | 2000-05-17 | Ronda Ag | Micro-générateur, module et pièce d'horlogerie, contenant un tel micro-générateur |
| 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 |
-
2001
- 2001-02-28 EP EP01200752A patent/EP1237058A1/fr not_active Withdrawn
-
2002
- 2002-02-14 DE DE60201978T patent/DE60201978T2/de not_active Expired - Lifetime
- 2002-02-14 CN CN02805594.2A patent/CN1252549C/zh not_active Expired - Fee Related
- 2002-02-14 WO PCT/CH2002/000089 patent/WO2002071159A1/fr not_active Ceased
- 2002-02-14 EP EP02709965A patent/EP1366391B1/fr not_active Expired - Lifetime
- 2002-02-14 JP JP2002570016A patent/JP2004521340A/ja active Pending
- 2002-02-14 US US10/572,068 patent/US20070025188A1/en not_active Abandoned
- 2002-02-14 AT AT02709965T patent/ATE282844T1/de not_active IP Right Cessation
-
2003
- 2003-08-27 US US10/649,304 patent/US20040042349A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO02071159A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8179012B2 (en) | 2009-06-16 | 2012-05-15 | ETA SA Manufacture Horlogére Suisse | Electro-mechanical transducer of small dimensions, in particular a timepiece generator |
Also Published As
| Publication number | Publication date |
|---|---|
| DE60201978T2 (de) | 2005-12-15 |
| US20040042349A1 (en) | 2004-03-04 |
| HK1064452A1 (en) | 2005-01-28 |
| DE60201978D1 (de) | 2004-12-23 |
| CN1252549C (zh) | 2006-04-19 |
| WO2002071159A1 (fr) | 2002-09-12 |
| CN1498362A (zh) | 2004-05-19 |
| US20070025188A1 (en) | 2007-02-01 |
| EP1237058A1 (fr) | 2002-09-04 |
| JP2004521340A (ja) | 2004-07-15 |
| EP1366391B1 (fr) | 2004-11-17 |
| ATE282844T1 (de) | 2004-12-15 |
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