EP2466393A2 - Feder eines Federhauses, das eine solche Feder umfasst - Google Patents

Feder eines Federhauses, das eine solche Feder umfasst Download PDF

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Publication number
EP2466393A2
EP2466393A2 EP20110187087 EP11187087A EP2466393A2 EP 2466393 A2 EP2466393 A2 EP 2466393A2 EP 20110187087 EP20110187087 EP 20110187087 EP 11187087 A EP11187087 A EP 11187087A EP 2466393 A2 EP2466393 A2 EP 2466393A2
Authority
EP
European Patent Office
Prior art keywords
barrel
blades
drum
spring according
torque limiting
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
Application number
EP20110187087
Other languages
English (en)
French (fr)
Other versions
EP2466393A3 (de
EP2466393B1 (de
EP2466393B8 (de
Inventor
Stéphane Von GuntenN
Lucas Humair
Pierre Gygax
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.)
Manufacture et Fabrique de Montres et Chronometres Ulysse Nardin Le Locle SA
Original Assignee
Manufacture et Fabrique de Montres et Chronometres Ulysse Nardin Le Locle 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 Manufacture et Fabrique de Montres et Chronometres Ulysse Nardin Le Locle SA filed Critical Manufacture et Fabrique de Montres et Chronometres Ulysse Nardin Le Locle SA
Publication of EP2466393A2 publication Critical patent/EP2466393A2/de
Publication of EP2466393A3 publication Critical patent/EP2466393A3/de
Publication of EP2466393B1 publication Critical patent/EP2466393B1/de
Application granted granted Critical
Publication of EP2466393B8 publication Critical patent/EP2466393B8/de
Active legal-status Critical Current
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
    • G04B1/12—Driving mechanisms with mainspring with several mainsprings

Definitions

  • the present invention relates to the field of mechanical watchmaking. It relates more particularly to a barrel spring and a barrel having a drum containing the spring and a shaft.
  • Such barrels are known CH 390 801 , FR 403 943 and JP 11174162 . All these barrels have a drum with a lid rotated on the barrel shaft with two separate ball bearings.
  • the document CH 610178 proposes, with the aim of improving the pivoting quality of the barrel, to mount it cantilevered by means of a ball bearing.
  • the barrel shaft is driven out of the outer ring of this bearing while the inner ring is fixed in a housing in the drum.
  • the drum is pivoted from the outside by means of rollers with which it cooperates.
  • the present invention aims not only to overcome these disadvantages by providing a barrel spring and a barrel optimized at the pivoting and yield provided, while avoiding any difficulty of congestion related to the use of ball bearings.
  • the invention relates to a mainspring as defined in the claims.
  • the invention also relates to a barrel containing such a spring according to the invention.
  • the figure 1 represents a first spiral of Archimedes and a second spiral of Archimedes shifted by a half-turn. These two spirals fit perfectly with a constant step. They have a central symmetry of order 2.
  • the figure 2 represents three Archimedes spirals staggered by a third of a turn with a central symmetry of order 3.
  • the number of unwinding turns of a barrel with two springs staggered by a half-turn would be reduced by about half.
  • a thickness divided by half allows approximately to keep the number of turns.
  • the gear ratio between the barrel and the center wheel will be adapted according to the torque delivered.
  • the barrel spring according to the invention comprises a plurality of coplanar blades 10a, 10b spirally wound into one another.
  • the blades forming the spring may be independent of one another.
  • Each blade may have its own attachment system and be attached independently on the plug of the barrel shaft, for example by means of a hole provided at the inner end of the blade and acting as eyelet.
  • the barrel plug contains a corresponding number of hooks arranged symmetrically to cooperate with the eyelets of each blade.
  • the blades forming the spring are connected to each other.
  • a single and common fastening system can be provided for all the blades.
  • the blades meet in a hub, the latter being provided with the fastening system. It can thus have a shape structure, male or female, cooperating with a complementary structure, female or male, located on the shaft.
  • a square assembly or a mounting with a slot for example arranged at the level of the shaft, into which a lug integral with the hub is inserted.
  • each blade is arranged substantially symmetrically with respect to the center of the spiral. They are arranged so as to cooperate with the inside of a barrel drum. This cooperation is usually a friction, but can also be a rigid connection.
  • each blade may each be extended by a torque limiting system for cooperating with the interior of the side wall of the barrel drum.
  • This torque limiting system may consist of a flange associated with each of the blades, forming a sliding flange.
  • the sliding flanges being known to those skilled in the art, this element will not be described in more detail.
  • the flanges are preferably arranged symmetrically.
  • each blade is independent and each comprise a fastening device, similar to what has been described above for independent blades.
  • the blades can be joined by an outer frame 14.
  • a connecting zone 16 may be provided between the end of the blades and the frame 14.
  • each blade is arranged symmetrically with respect to the center of the spiral and join the frame 14.
  • the latter is arranged so as to cooperate with the inner wall of a barrel drum. This cooperation is usually a friction, but can also be a rigid connection.
  • the cooperation can also be of the sliding type, in order to limit the winding torque of the barrel.
  • the torque limiting system can be obtained by making one or more slots in the frame 14 to allow it to deform when the maximum torque is reached, allowing the spring to move relative to the drum to reduce the torque.
  • the outer ends can also be joined by a frame 14, which can optionally be slotted to provide the torque limiting system.
  • the torque limiting system and the blades 10a, 10b are made in a monolithic piece.
  • the fastening device 12 can also be integrally assembled with the blades and, where appropriate, with the torque limiting system.
  • n is between 2 and 4 (inclusive).
  • the spring may, for example, be made of silicon, in particular monocrystalline silicon, optionally covered with a layer of silicon or a diamond layer. It will also be possible to make the polycrystalline diamond spring, shaped by deep etching.
  • the invention also relates to a barrel comprising a barrel drum, a barrel spring as proposed above and contained in the drum, and a shaft on which is mounted freely the barrel drum.
  • the shaft is arranged to cooperate with the fastening devices of each of the blades.
  • the shaft is arranged to cooperate with the single fastening device located on the hub joining the inner ends of the blades.
  • the drum is arranged to cooperate with this torque limiting device.
  • the drum has notches or a crenellated structure formed inside its side wall.
  • the pitch of the turns is variable or that the thicknesses of the blades also vary, regularly or not, in order to act on the regularity of the transmitted torque, on the stored energy density (distribution of the stresses along the blades) or on the concentric development of the blades so as to have a radial force resulting almost zero exerted on the shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
EP11187087.9A 2010-12-17 2011-10-28 Feder eines Federhauses, das eine solche Feder umfasst Active EP2466393B8 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH21132010A CH704237B1 (fr) 2010-12-17 2010-12-17 Ressort de barillet et barillet contenant un tel ressort.

Publications (4)

Publication Number Publication Date
EP2466393A2 true EP2466393A2 (de) 2012-06-20
EP2466393A3 EP2466393A3 (de) 2013-04-24
EP2466393B1 EP2466393B1 (de) 2015-08-19
EP2466393B8 EP2466393B8 (de) 2015-10-28

Family

ID=44862756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11187087.9A Active EP2466393B8 (de) 2010-12-17 2011-10-28 Feder eines Federhauses, das eine solche Feder umfasst

Country Status (2)

Country Link
EP (1) EP2466393B8 (de)
CH (1) CH704237B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014001017A1 (fr) * 2012-06-28 2014-01-03 Nivarox-Far S.A. Ressort-moteur pour une piece d'horlogerie
WO2018146639A1 (fr) * 2017-02-13 2018-08-16 Patek Philippe Sa Geneve Organe moteur d'horlogerie

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH714452A2 (fr) 2017-12-15 2019-06-28 Nivarox Sa Ressort de barillet pour un mouvement horloger d’une pièce d’horlogerie et procédé de fabrication d’un tel ressort.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR403943A (fr) 1909-06-11 1909-11-18 Karl Schwan Mouvement d'horlogerie à longue marche avec échappement à ancre
CH390801A (de) 1962-02-23 1964-12-31 A & M Fell Ltd Uhr mit einem Antrieb für einen weiteren Mechanismus
JPH11174162A (ja) 1997-12-11 1999-07-02 Seiko Instruments Inc 香箱車及び機械式時計

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH285199A (fr) * 1950-06-12 1952-08-31 Hausheer Hermann Moteur pour mouvement d'horlogerie.
EP2151722B8 (de) * 2008-07-29 2021-03-31 Rolex Sa Spiralfeder für Spiralfeder-Unruh-Resonator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR403943A (fr) 1909-06-11 1909-11-18 Karl Schwan Mouvement d'horlogerie à longue marche avec échappement à ancre
CH390801A (de) 1962-02-23 1964-12-31 A & M Fell Ltd Uhr mit einem Antrieb für einen weiteren Mechanismus
JPH11174162A (ja) 1997-12-11 1999-07-02 Seiko Instruments Inc 香箱車及び機械式時計

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014001017A1 (fr) * 2012-06-28 2014-01-03 Nivarox-Far S.A. Ressort-moteur pour une piece d'horlogerie
US9329571B2 (en) 2012-06-28 2016-05-03 Nivarox-Far S.A. Mainspring for a timepiece
CN104412175B (zh) * 2012-06-28 2017-05-17 尼瓦洛克斯-法尔股份有限公司 钟表的主发条
RU2634792C2 (ru) * 2012-06-28 2017-11-03 Ниварокс-Фар С.А. Ходовая пружина часов
WO2018146639A1 (fr) * 2017-02-13 2018-08-16 Patek Philippe Sa Geneve Organe moteur d'horlogerie
US11543775B2 (en) 2017-02-13 2023-01-03 Patek Philippe Sa Geneve Drive member for a timepiece

Also Published As

Publication number Publication date
EP2466393A3 (de) 2013-04-24
EP2466393B1 (de) 2015-08-19
CH704237A2 (fr) 2012-06-29
CH704237B1 (fr) 2015-03-13
EP2466393B8 (de) 2015-10-28

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