EP2867734B1 - Triebfeder für uhr - Google Patents

Triebfeder für uhr Download PDF

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Publication number
EP2867734B1
EP2867734B1 EP13725709.3A EP13725709A EP2867734B1 EP 2867734 B1 EP2867734 B1 EP 2867734B1 EP 13725709 A EP13725709 A EP 13725709A EP 2867734 B1 EP2867734 B1 EP 2867734B1
Authority
EP
European Patent Office
Prior art keywords
mainspring
strip
thickness
blade
flange
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.)
Active
Application number
EP13725709.3A
Other languages
English (en)
French (fr)
Other versions
EP2867734A1 (de
Inventor
Christian Charbon
Maxime GOVAERTS
Pierre Cusin
Marco Verardo
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.)
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Publication date
Application filed by Nivarox Far SA, Nivarox SA filed Critical Nivarox Far SA
Priority to EP13725709.3A priority Critical patent/EP2867734B1/de
Publication of EP2867734A1 publication Critical patent/EP2867734A1/de
Application granted granted Critical
Publication of EP2867734B1 publication Critical patent/EP2867734B1/de
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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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/14—Mainsprings; Bridles therefor
    • G04B1/145—Composition and manufacture of the springs
    • 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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor
    • G04B1/185—Friction clutch between spring and spring cylinder
    • 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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/14—Mainsprings; Bridles therefor

Definitions

  • the invention relates to a mainspring for a timepiece and in particular for a mainspring intended to be integrated into a cylinder.
  • the object of the present invention is to overcome all or part of the disadvantages mentioned above by proposing an engine-spring simplifying the small manufacturing steps while significantly reducing the scrap rate.
  • the invention relates to a mainspring according to claim 1.
  • the invention relates to a mainspring as for a cylinder or a ring of a timepiece.
  • a mainspring as for a cylinder or a ring of a timepiece.
  • other applications requiring a mainspring are possible such as an automaton.
  • the motor spring 1 comprises a metal blade 3 wound on itself.
  • the blade 3 has an excess thickness 5 on a portion of the outer turn forming a flange 7 in one piece with the blade 3.
  • the excess thickness 5 extends radially in a substantially uniform thickness towards the outside of the mainspring 1, that is to say that the inside of the outer coil can always slide against the outside of the rest of the blade 3.
  • the excess thickness 5 is formed between the beginning of the outer turn and before the free end of the outer turn, that is to say that the free end of the outer turn has substantially the same section as the rest of the unthickened outer coil. It is therefore understood that the pitfalls generated by the small dimensions of the flange 7 are canceled by the one-piece construction.
  • the flange 7 is always perfectly positioned relative to the blade 3 of the mainspring 1.
  • the blade 3 of the motor spring 1 also comprises, at its inner turn, an eyelet 9 integral with the blade 3 and intended to cooperate, for example, with the hook of a bung.
  • This architecture allows, as will be explained below, to be very precise on the dimensions of the opening of the eyelet 9 and its positioning on the inner turn of the blade 3.
  • the motor spring 11 comprises a metal blade 13 wound on itself.
  • the blade 13 has an extra thickness 15 on a portion of the outer turn forming a flange 17 in one piece with the blade 13.
  • the excess thickness 15 extends radially in a substantially uniform thickness towards the outside of the mainspring 11, that is to say that the inside of the outer coil can always slide against the outside of the remainder of the blade 13.
  • the extra thickness 15 is formed between the beginning of the outer turn and before the free end of the outer turn, that is to say that the free end of the outer turn has substantially the same section as the rest of the unthickened outer turn. It is therefore understood that the pitfalls generated by the small dimensions of the flange 17 are canceled by the one-piece construction.
  • the flange 17 is always perfectly positioned relative to the blade 13 of the mainspring 11.
  • the blade 13 of the motor spring 11 also comprises, at its inner coil, a ferrule 19 integral with the blade 13 and intended to cooperate, for example, with a bung or more generally a pivoting axis.
  • This architecture makes it possible, as will be explained below, to be very precise on the dimensions of the opening of the shell 19 as well as its positioning on the inner turn of the blade 13.
  • the method comprises a first step of providing a substrate 41 having an electrically conductive upper layer.
  • This layer can be obtained by the deposition of an electrically conductive material on an insulating material or in that the substrate is formed of an electrically conductive material.
  • the main steps of electroforming consist in forming a mold and then filling the mold with a material, for example, using electroplating.
  • This type of electroforming is known by the abbreviation LIGA from the German terms "röntgenLithographie, Galvanoformung &Abformung.”
  • LIGA type processes There are several types of LIGA type processes depending on whether the multi-level mold is formed between each electroplating or is formed entirely for to be, only afterwards, filled in.
  • the technique presented consists in forming each level, that is to say forming a level of the mold and the complete before going to the next level.
  • any type of electroforming, LIGA type or not, capable of forming a monobloc motor spring at least one level is possible.
  • the first level 47 of the mold 42 is formed using, for example, a photolithography of a resin as illustrated in FIG. figure 3 .
  • the first level is then filled by
  • a single level may be sufficient to form the future motor spring 11 with its integrated flange 17 and, optionally, its ferrule 19.
  • a second and third level is formed using, for example, also a photolithography of a resin.
  • a second step at least one recess of shape corresponding to a second pattern is formed, that is to say with addition of material at the level of the future hollow of the eyelet 9 and communicating with said at least one cavity of the first level 47.
  • the second level 49 is then filled by electrodeposition of a metallic material 48.
  • the third level is then filled by electroplating a metal material 50.
  • the deposited metal material 46, 48, 50 is an alloy of nickel and phosphorus, typically with substantially 12% phosphorus (NiP12). Indeed, it has been found satisfactory to use this type of alloy for the manufacture of a motor spring because of its elastic modulus around 90GPa and its elastic limit around 1700 MPa.
  • the present invention is not limited to the illustrated example but is susceptible of various variations and modifications that will occur to those skilled in the art.
  • the eyelet assembly 9 - hook between the motor spring 1 and the plug of the barrel can be reversed. It is therefore understood that the mainspring 1 can be provided with the hook in place of the eyelet 9.
  • the motor spring 21 comprises a metal blade 23 wound on itself.
  • the blade 23 has an extra thickness 25 on a part of the outer turn forming a base in one piece with the blade 23.
  • the blade 23 of the motor spring 21 also comprises, at its inner coil, a ferrule 29 integral with the blade 23 and intended to cooperate, for example, with a bung or more generally a pivoting axis.
  • the excess thickness 25 extends radially in a substantially uniform thickness towards the outside of the motor spring 21, that is to say that the inside of the outer coil can always slide against the outside of the rest of the blade 23.
  • the excess thickness 25 is formed between the beginning of the outer turn and before the free end of the outer turn, that is to say that the free end of the outer turn has substantially the same section as the rest of the outer turn. the outer coil not thickened.
  • the extra thickness 25 forms a base for at least one second blade 22, 24 forming a flange 27 in one piece with the blade 23.
  • said at least one second blade 22, 24 runs at least partially outside the outer turn of the motor spring 21.
  • said at least one second blade 22, 24 may for example be longer than of the outer turn.
  • Said at least one second blade 22, 24 may also include a plurality of second blades 22, 24 extending in a section and / or a direction and / or a different direction or not with respect to the extra thickness 25 forming its base.
  • the thickening 25 forming the base comprises two second blades 22, 24 of identical thickness and height but of different lengths and extending in the same direction but in opposite directions.
  • the extra thickness 5, 15, 25 does not intend to be limited to that of the thickness of the blade 3, 13, 23, it can also relate to the thickness and / or the height. Thus, for example, the extra thickness could be at a greater height to selectively bend between the drum and the barrel cover.

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
  • Vehicle Body Suspensions (AREA)

Claims (12)

  1. Gangfeder (21), die ein auf sich selbst gewickeltes metallisches Plättchen (23) aufweist und eine externe Windung umfasst, die eine einteilig mit dem Plättchen (23) ausgebildete Überdicke (25) zwischen dem Beginn der externen Windung und vor dem freien Ende der externen Windung, das eine Basis bildet, die sich radial längs einer im Wesentlichen gleichmäßigen Dicke zu der äußeren Umgebung der Gangfeder erstreckt, aufweist, und die wenigstens ein zweites Plättchen (22, 24) aufweist, das einen einteilig mit dem Plättchen (23) ausgebildeten Steg (27) bildet, der sich von der Basis erstreckt und wenigstens teilweise außerhalb der nicht verdickten externen Windung der Gangfeder (21) verläuft.
  2. Gangfeder (21) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass das wenigstens eine zweite Plättchen (22, 24) auf der Hälfte der externen Windung der Gangfeder (21) verläuft.
  3. Gangfeder (21) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das wenigstens eine zweite Plättchen (22, 24) zwei Plättchen (22, 24) umfasst, die sich ausgehend von der Überdicke (25) in der gleichen Richtung, jedoch im entgegengesetzten Richtungssinn erstrecken.
  4. Gangfeder (21) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das wenigstens eine zweite Plättchen (22, 24) eine konstante Dicke und/oder eine konstante Höhe aufweist.
  5. Gangfeder (21) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das wenigstens eine zweite Plättchen (22, 24) eine nicht konstante Dicke und/oder eine nicht konstante Höhe aufweist.
  6. Gangfeder (21) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Überdicke (25) eine konstante Dicke und/oder eine konstante Höhe aufweist.
  7. Gangfeder (21) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Überdicke (25) eine nicht konstante Dicke und/oder eine nicht konstante Höhe aufweist.
  8. Gangfeder (21) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie eine interne Windung mit einer einteilig mit dem Plättchen (23) ausgebildeten Öse (9) umfasst.
  9. Gangfeder (21) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass sie eine interne Windung mit einem einteilig mit dem Plättchen (23) ausgebildeten Haken umfasst.
  10. Gangfeder (21) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass sie eine interne Windung mit einer einteilig mit dem Plättchen (23) ausgebildeten Spiralrolle (29) umfasst.
  11. Gangfeder (21) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie auf der Basis einer Nickel-Phosphor-Legierung gebildet ist.
  12. Zeitmessgerät, dadurch gekennzeichnet, dass es eine Gangfeder (21) nach einem der vorhergehenden Ansprüche umfasst.
EP13725709.3A 2012-06-28 2013-05-30 Triebfeder für uhr Active EP2867734B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13725709.3A EP2867734B1 (de) 2012-06-28 2013-05-30 Triebfeder für uhr

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12174129 2012-06-28
PCT/EP2013/061168 WO2014001017A1 (fr) 2012-06-28 2013-05-30 Ressort-moteur pour une piece d'horlogerie
EP13725709.3A EP2867734B1 (de) 2012-06-28 2013-05-30 Triebfeder für uhr

Publications (2)

Publication Number Publication Date
EP2867734A1 EP2867734A1 (de) 2015-05-06
EP2867734B1 true EP2867734B1 (de) 2016-05-04

Family

ID=48536914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13725709.3A Active EP2867734B1 (de) 2012-06-28 2013-05-30 Triebfeder für uhr

Country Status (7)

Country Link
US (1) US9329571B2 (de)
EP (1) EP2867734B1 (de)
JP (1) JP5961755B2 (de)
CN (1) CN104412175B (de)
HK (1) HK1208270A1 (de)
RU (1) RU2634792C2 (de)
WO (1) WO2014001017A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3499316A1 (de) * 2017-12-15 2019-06-19 Nivarox-FAR S.A. Schliesszylinderfeder für ein uhrwerk einer uhr, und herstellungsverfahren einer solchen feder

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3018097A (en) * 1959-04-08 1962-01-23 Sandvik Steel Inc Power springs
CH1517065A4 (fr) * 1965-11-03 1967-04-15 Girard Perregaux Et Cie S A Montre portative
US3433011A (en) * 1966-04-30 1969-03-18 Citizen Watch Co Ltd Barrel spring
CH593507B5 (fr) * 1967-01-24 1977-12-15 Vimetal Sa Ressort moteur pour piece d'horlogerie a remontage automatique.
CH610466B5 (en) * 1968-10-29 1979-04-30 Vimetal Sa Drive device for timepiece with spring and barrel
CH1687869A4 (fr) * 1969-11-13 1972-10-13 Vimetal S A Ressort-moteur pour pièce d'horlogerie
US3928085A (en) * 1972-05-08 1975-12-23 Suwa Seikosha Kk Timepiece mainspring of cobalt-nickel base alloys having high elasticity and high proportional limit
JPH09113637A (ja) * 1995-10-16 1997-05-02 Orient Watch Co Ltd 携帯用機械時計の手巻ゼンマイ構造
DE69836411T2 (de) * 1997-08-28 2007-09-27 Seiko Epson Corp. Uhr oder Spieluhr
WO2002004836A2 (en) * 2000-07-11 2002-01-17 Seiko Epson Corporation Spring, drive mechanism, device and timepiece using the spring
EP1519250B1 (de) * 2003-09-26 2010-06-30 Asulab S.A. Spiralfeder-Unruh-Resonator mit Thermokompensation
EP1835339B1 (de) 2006-03-15 2012-05-16 Rolex S.A. LIGA Verfahren zur Herstellung einer einzel- oder mehrlagigen metallischen Struktur und damit hergestellte Struktur
EP2105807B1 (de) * 2008-03-28 2015-12-02 Montres Breguet SA Monoblockspirale zur Erhöhung der Kurve und ihr Herstellungsverfahren
CH699882A2 (fr) * 2008-11-06 2010-05-14 Montres Breguet Sa Spiral à élévation de courbe en matériau micro-usinable.
WO2011069273A1 (fr) * 2009-12-09 2011-06-16 Rolex S.A. Procédé de fabrication d'un ressort pour pièce d'horlogerie
EP2390732A1 (de) * 2010-05-27 2011-11-30 Association Suisse pour la Recherche Horlogère Zugfeder für Federhaus
CH704237B1 (fr) * 2010-12-17 2015-03-13 Manuf Et Fabrique De Montres Et Chronomètres Ulysse Nardin Le Locle Sa Ressort de barillet et barillet contenant un tel ressort.
EP2657794B1 (de) * 2012-04-25 2017-02-01 ETA SA Manufacture Horlogère Suisse Federwelle und Zugfeder
EP2680090A1 (de) * 2012-06-28 2014-01-01 Nivarox-FAR S.A. Triebfeder für Uhr
EP2743781B1 (de) * 2012-12-11 2019-06-12 Nivarox-FAR S.A. Montagevorrichtung zum Verriegeln eines Verbundsystems

Also Published As

Publication number Publication date
US9329571B2 (en) 2016-05-03
RU2634792C2 (ru) 2017-11-03
EP2867734A1 (de) 2015-05-06
JP5961755B2 (ja) 2016-08-02
HK1208270A1 (en) 2016-02-26
WO2014001017A1 (fr) 2014-01-03
US20150277380A1 (en) 2015-10-01
CN104412175B (zh) 2017-05-17
CN104412175A (zh) 2015-03-11
JP2015519578A (ja) 2015-07-09
RU2015102621A (ru) 2016-08-20

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