EP1237059B1 - Benutzung von nichtmagnetischen Leiterbahnen in einem elektronischen Modul, der für eine Zeitmessvorrichtung bestimmt ist - Google Patents

Benutzung von nichtmagnetischen Leiterbahnen in einem elektronischen Modul, der für eine Zeitmessvorrichtung bestimmt ist Download PDF

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Publication number
EP1237059B1
EP1237059B1 EP01200754A EP01200754A EP1237059B1 EP 1237059 B1 EP1237059 B1 EP 1237059B1 EP 01200754 A EP01200754 A EP 01200754A EP 01200754 A EP01200754 A EP 01200754A EP 1237059 B1 EP1237059 B1 EP 1237059B1
Authority
EP
European Patent Office
Prior art keywords
timepiece according
timepiece
electronic module
conductive paths
magnetic
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
EP01200754A
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English (en)
French (fr)
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EP1237059A1 (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 DE60141808T priority Critical patent/DE60141808D1/de
Priority to AT01200754T priority patent/ATE464591T1/de
Priority to EP01200754A priority patent/EP1237059B1/de
Publication of EP1237059A1 publication Critical patent/EP1237059A1/de
Application granted granted Critical
Publication of EP1237059B1 publication Critical patent/EP1237059B1/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

Definitions

  • the present invention relates to a timepiece comprising in particular a functional unit comprising magnetic masses, an electronic module comprising a support with conductive tracks connected to at least one integrated circuit.
  • the subject of the present application relates to a timepiece whose said functional unit is a microgenerator unshielded laterally.
  • non-magnetic or “non-magnetic” material is understood to mean a material which is not ferromagnetic, which is not or very weakly paramagnetic, and which, if present, will have a low diamagnetism.
  • the operating principle of such a watch movement is described in particular in the patent specifications CH 597636 and EP 851322 .
  • the patent CH 597636 for example, describes a watch movement in which a spring drives, through a set of gears, on the one hand needles and on the other hand a generator producing an alternating current.
  • the generator makes it possible to supply an electronic circuit comprising in particular a stabilized quartz oscillator and making it possible to regulate the operation of the generator and thus the operation of the hands.
  • Such a watch therefore combines the advantages of a mechanical watch with the precision of a quartz watch.
  • the present invention therefore aims to improve the type of timepieces mentioned above to avoid the disadvantages described above, including a simple development and inexpensive manufacturing.
  • the invention relates to a timepiece as defined in claim 1.
  • said conductive tracks comprise a layer of a good electrically conductive material deposited on the substrate of the printed circuit and surmounted by a protective layer.
  • This protective layer is also made of a non-magnetic material, according to the present invention, preferably a non-magnetic alloy based on nickel.
  • the conduction tracks further comprise an underlayer intended to improve the adhesion of the layer of good electrically conductive material to the substrate of the printed circuit.
  • This underlayer is preferably made of a non-magnetic alloy based on nickel.
  • FIG. 1 is a simplified top view of the partially mounted movement of a timepiece including a generator.
  • the figure 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 by approximately 120 degrees with respect to the other relative to the axis of the rotor 2, in a same plane orthogonal thereto.
  • a printed circuit 6 serves as a support, in particular for the coils 4, for an integrated circuit 7, for a quartz 8 and for electric conduction tracks 9.
  • the power supply of the integrated circuit 7, with low energy consumption, is provided by the electric generator 1 - consisting of the shaft assembly 10 of the rotor 2, flanges 3, magnets 5 and coils 4 - driven via a kinematic link 11 by A barrel device 12.
  • the mechanical energy stored in the barrel 12 therefore drives the rotor 2.
  • the passage of the magnets 5 near the coils 4 generates a substantially sinusoidal induced voltage across these coils.
  • said electric conduction tracks 9 are typically made in two steps.
  • the first step is to deposit a layer of a very good electrical conductor material, such as a copper-based alloy or gold.
  • the second step then consists in depositing a thin protective layer, on the conduction layer, consisting of a nickel-based alloy having a good resistance to oxidation.
  • a sub-layer is deposited on the substrate before depositing the conduction layer.
  • This undercoat usually made of a nickel-based alloy, improves the adhesion of the conduction layer on the substrate. It will be noted that the nickel-based underlayer also serves as a barrier against diffusion of the metal from the conduction layer towards the support.
  • the nickel-based alloy usually used to produce the protective layer has ferromagnetic properties.
  • the conventional nickel-based alloy can under the action of a magnetic field partially capture the magnetic flux of magnets 5 rotating, which brakes the generator.
  • the solution to the aforementioned problem then consists in using only materials that do not have ferromagnetic properties for the production of electric conduction tracks, in particular for producing the protective layer.
  • nickel-based alloy comprising phosphorus, since for certain values of its composition, the alloy obtained does not have any magnetic properties. It may be possible to use the use of other metals to replace nickel, such as palladium for example, some alloys also have non-magnetic properties.
  • the above reasoning is also applicable in the case where the electric conduction tracks comprise an adhesion sub-layer.
  • Said sub-layer is then preferably made of a non-magnetic alloy based on nickel.
  • the electronic module 6 furthermore supports discrete electronic elements, such as a capacitor 13, that said discrete electronic elements consist exclusively of materials having substantially non-magnetic properties.
  • the invention can be implemented in a timepiece whose functional unit is a compass, or in any other type of timepiece using means interacting with an external magnetic field, especially in view of of its detection.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Measuring Magnetic Variables (AREA)

Claims (10)

  1. Zeitmessgerät, das insbesondere eine Funktionseinheit (1) mit magnetisierten Massen (5) und ein elektronisches Modul (6) mit einem Träger mit Leiterbahnen (9), die mit wenigstens einer integrierten Schaltung (7) verbunden sind, umfasst, dadurch gekennzeichnet, dass die Leiterbahnen (9) nur im Wesentlichen nicht magnetische Eigenschaften aufweisen.
  2. Zeitmessgerät nach Anspruch 1, dadurch gekennzeichnet, dass die Leiterbahnen (9) eine aus einem nicht magnetischen Material gebildete Schutzschicht enthalten.
  3. Zeitmessgerät nach Anspruch 2, dadurch gekennzeichnet, dass die Schutzschicht aus einer Legierung auf Nickelbasis hergestellt ist.
  4. Zeitmessgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das elektronische Modul (6) außerdem wenigstens ein diskretes elektronisches Bauelement (13), insbesondere einen Kondensator, umfasst und dass das diskrete elektronische Bauelement ausschließlich aus Materialien gebildet ist, die im Wesentlichen nicht magnetische Eigenschaften besitzen.
  5. Zeitmessgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Leiterbahnen (9) eine untere Haftschicht aufweisen, die aus einem nicht magnetischen Material gebildet ist.
  6. Zeitmessgerät nach Anspruch 5, dadurch gekennzeichnet, dass die untere Haftschicht aus einer Legierung auf Nickelbasis hergestellt ist.
  7. Zeitmessgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Funktionseinheit (1) ein Mikrogenerator ist.
  8. Zeitmessgerät nach Anspruch 7, dadurch gekennzeichnet, dass der Mikrogenerator (1) einen Rotor (2) mit zwei Flanschen (3), die jeweils im Wesentlichen die Form einer Scheibe haben und jeweils auf ihrer Fläche gegenüber dem anderen Flansch eine gerade Anzahl magnetisierter Massen (5) tragen, umfasst, wobei das elektronische Modul (6) wenigstens eine Statorspule (4) umfasst, die an dem Träger befestigt ist und teilweise zwischen die zwei Flansche (3) eingesetzt ist, wobei die Leiterbahnen (9) des Trägers, die die wenigstens eine Spule (4) mit der integrierten Schaltung (7) verbinden, nur im Wesentlichen nicht magnetische Eigenschaften aufweisen.
  9. Zeitmessgerät nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Funktionseinheit die Erfassung des Vorhandenseins eines äußeren Magnetfeldes ermöglicht.
  10. Zeitmessgerät nach Anspruch 9, dadurch gekennzeichnet, dass die Funktionseinheit (1) die Funktion eines Kompasses erfüllt.
EP01200754A 2001-02-28 2001-02-28 Benutzung von nichtmagnetischen Leiterbahnen in einem elektronischen Modul, der für eine Zeitmessvorrichtung bestimmt ist Expired - Lifetime EP1237059B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE60141808T DE60141808D1 (de) 2001-02-28 2001-02-28 Benutzung von nichtmagnetischen Leiterbahnen in einem elektronischen Modul, der für eine Zeitmessvorrichtung bestimmt ist
AT01200754T ATE464591T1 (de) 2001-02-28 2001-02-28 Benutzung von nichtmagnetischen leiterbahnen in einem elektronischen modul, der für eine zeitmessvorrichtung bestimmt ist
EP01200754A EP1237059B1 (de) 2001-02-28 2001-02-28 Benutzung von nichtmagnetischen Leiterbahnen in einem elektronischen Modul, der für eine Zeitmessvorrichtung bestimmt ist

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01200754A EP1237059B1 (de) 2001-02-28 2001-02-28 Benutzung von nichtmagnetischen Leiterbahnen in einem elektronischen Modul, der für eine Zeitmessvorrichtung bestimmt ist

Publications (2)

Publication Number Publication Date
EP1237059A1 EP1237059A1 (de) 2002-09-04
EP1237059B1 true EP1237059B1 (de) 2010-04-14

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EP01200754A Expired - Lifetime EP1237059B1 (de) 2001-02-28 2001-02-28 Benutzung von nichtmagnetischen Leiterbahnen in einem elektronischen Modul, der für eine Zeitmessvorrichtung bestimmt ist

Country Status (3)

Country Link
EP (1) EP1237059B1 (de)
AT (1) ATE464591T1 (de)
DE (1) DE60141808D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH707787B1 (fr) * 2013-03-25 2021-09-15 Richemont Int Sa Organe régulateur pour montre bracelet et procédé d'assemblage d'un organe régulateur pour montre bracelet.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990013914A1 (en) * 1989-05-01 1990-11-15 Sumitomo Electric Industries, Ltd. Lead frame for semiconductor devices
JPH07314603A (ja) * 1993-12-28 1995-12-05 Nippon Denkai Kk 銅張積層体、多層プリント回路板及びそれらの処理方法

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Publication number Publication date
EP1237059A1 (de) 2002-09-04
ATE464591T1 (de) 2010-04-15
DE60141808D1 (de) 2010-05-27

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