EP1562087B1 - Balancier pour mouvement d'horlogerie - Google Patents

Balancier pour mouvement d'horlogerie Download PDF

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Publication number
EP1562087B1
EP1562087B1 EP05000326A EP05000326A EP1562087B1 EP 1562087 B1 EP1562087 B1 EP 1562087B1 EP 05000326 A EP05000326 A EP 05000326A EP 05000326 A EP05000326 A EP 05000326A EP 1562087 B1 EP1562087 B1 EP 1562087B1
Authority
EP
European Patent Office
Prior art keywords
balance
serge
titanium
arms
wheel
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
EP05000326A
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German (de)
English (en)
French (fr)
Other versions
EP1562087A1 (fr
Inventor
Jean Remont
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.)
Montres Breguet SA
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Montres Breguet SA
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Filing date
Publication date
Application filed by Montres Breguet SA filed Critical Montres Breguet SA
Priority to EP05000326A priority Critical patent/EP1562087B1/fr
Publication of EP1562087A1 publication Critical patent/EP1562087A1/fr
Application granted granted Critical
Publication of EP1562087B1 publication Critical patent/EP1562087B1/fr
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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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • G04B17/063—Balance construction

Definitions

  • the present invention relates to a pendulum for a watch movement, comprising an axis, a serge and arms connecting the serge to the axis, and intended to be associated with a spiral spring to form conventionally the mechanical oscillator which determines the basic frequency of the movement of a timepiece, in particular a watch.
  • a pendulum for a watch movement comprising an axis, a serge and arms connecting the serge to the axis, and intended to be associated with a spiral spring to form conventionally the mechanical oscillator which determines the basic frequency of the movement of a timepiece, in particular a watch.
  • a known construction of a balance of this kind is illustrated for example in the patent CH 494 992 or the patent CH 621 669 .
  • the wheel-shaped part comprising the serge (or rim) and the arms is made of a copper-based alloy, especially cupro-beryllium or nickel silver, or nickel.
  • a copper-based alloy especially cupro-beryllium or nickel silver, or nickel.
  • Such an alloy offers an advantageous combination of qualities which include, in particular, its non-magnetic nature, good chemical stability and sufficient mechanical characteristics.
  • the density of these alloys is greater than 8 kg / dm 3 .
  • Their coefficient of thermal expansion which is about 17 ⁇ 10 -6 / ° C for CuBe, about 15 ⁇ 10 -6 / ° C for nickel and about 21 ⁇ 10 -6 / ° C for the nickel silver is not particularly favorable.
  • the usual frequencies of the watch oscillators range from 2.5 Hz to 5 Hz, in steps of 0.5 Hz so that a duration of one second corresponds to an integer number of alternations of the oscillator. A movement is therefore designed for a given frequency and the sprung balance assembly must have this frequency.
  • the relevant parameter of the pendulum is the moment of inertia. As the arm of the pendulum is very small in the moment of inertia, it depends primarily on the dimensions (diameter and cross-section) and the density of the serge.
  • the designer of a watchmaking movement may wish to use a comparatively large diameter pendulum, for example for aesthetic reasons.
  • Increasing the diameter without changing the moment of inertia can be done either by reducing the section of the serge, or by using a lower density material.
  • the balance will have a smaller mass, which reduces the friction in the bearings, therefore the disturbances of the isochronism of the balance according to the positions (vertical and horizontal) of the movement.
  • a Reduced cross section becomes too weak, especially if it has to be fitted with adjusting screws. We can then consider the use of a lighter material.
  • the FR Patent 1,275,357 plans to make a lightened watch pendulum, by combining a serge made of a light metal such as aluminum with a wheel-shaped elastic support element, constituted by a circle and spokes, the circle having legs outside for its attachment to the serge. This allows the wheel to be made of a material with high mechanical properties, for example a spring steel.
  • a similar solution, but without brackets, is provided in the FR 1 301 938 .
  • the present invention aims at making it possible to produce a balance-spring oscillator having a larger diameter than usual for the same frequency, or having a higher frequency with the same dimensions as a usual oscillator, avoiding the aforementioned drawbacks.
  • the invention aims in particular to lighten the balance by maintaining a sufficient mechanical strength and good dimensional stability vis-à-vis temperature variations.
  • a rocker according to the invention is characterized in that the serge and the arms are made of titanium.
  • the serge and the arms are made in one piece, which is a great advantage over the two French patents mentioned above, but it is not excluded to manufacture these parts separately, then to assemble them by welding or a other way.
  • titanium for this particular application has a set of technical advantages that make it possible to achieve a balance wheel both lightweight and high quality: non-magnetic nature, low density, high mechanical strength, low coefficient of thermal expansion, resistance to corrosion.
  • titanium is almost two times lighter and expands thermally by half, while also offering good mechanical properties.
  • titanium is a little heavier, but has much better mechanical characteristics and thermal expansion three times less. The invention therefore makes it possible to produce a one-piece balance wheel whose serge is relatively light despite relatively large dimensions, while the arms are thin and elastic while being sufficiently strong.
  • a balance of the same diameter titanium may have a higher serge (in the direction parallel to the axis of rotation), which allows to spare in the serge of tapped holes for balancing screws in cases where this would not be possible in the serge made of conventional material.
  • the pendulum 1 represented in the Figures 1 and 2 comprises a conventional steel shaft 2 which supports a balance wheel comprising a serge 3 and for example three arms 4 made in one piece with the serge. This piece is made of titanium, for the reasons of lightness exposed above.
  • the arms 4 radiate from a pierced central portion 5 which is driven on a bearing 6 of the axis 2 abutting against a shoulder 7.
  • the shaft 2 supports in addition to a ferrule 8, intended for fixing a spiral not shown, and a double exhaust plate 9 for cooperating with an anchor.
  • Titanium grade 2 AFNOR T40 (Fe 0.25%, O 0.048%, C 0.06%, N 0.05%, H 0.013%, Ti for the rest)
  • Titanium grade 5 AFNOR TA6V6E2 (Al 5.5%, V 5.5%, Fe 0.6%, N 0.04%, Sn 2%, Cu 0.6%, Ti for the rest).
  • the serge 3 having in this case a trapezoidal cross section, is sufficiently high, thick and strong to include threaded holes for receiving adjustment screws if necessary.
  • balancing balancer is not achieved by means of adjusting screws, but by milling depressions 11 in the outer face of the serge.
  • the pendulum 1 is made of titanium (density 4.5 kg / dm 3 ) in order to have a larger diameter than a conventional cupro-beryllium balance (density 8.25 kg / dm 3 ) having the same moment of inertia, keeping in addition the same cross-section of the serge, it can be calculated that the average diameter of the serge of the titanium balance will be enlarged by 22%.
  • the effect obtained from the point of view of aesthetics is significant, without causing loss of mechanical characteristics of the serge.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Gears, Cams (AREA)
  • Micromachines (AREA)
  • Polarising Elements (AREA)
  • Control Of Stepping Motors (AREA)
  • Springs (AREA)
  • Vehicle Body Suspensions (AREA)
EP05000326A 2004-02-05 2005-01-10 Balancier pour mouvement d'horlogerie Active EP1562087B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05000326A EP1562087B1 (fr) 2004-02-05 2005-01-10 Balancier pour mouvement d'horlogerie

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04002540 2004-02-05
EP04002540 2004-02-05
EP05000326A EP1562087B1 (fr) 2004-02-05 2005-01-10 Balancier pour mouvement d'horlogerie

Publications (2)

Publication Number Publication Date
EP1562087A1 EP1562087A1 (fr) 2005-08-10
EP1562087B1 true EP1562087B1 (fr) 2008-05-21

Family

ID=34814236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05000326A Active EP1562087B1 (fr) 2004-02-05 2005-01-10 Balancier pour mouvement d'horlogerie

Country Status (8)

Country Link
US (1) US20050174893A1 (ja)
EP (1) EP1562087B1 (ja)
JP (1) JP4537219B2 (ja)
CN (1) CN1652046B (ja)
AT (1) ATE396430T1 (ja)
DE (1) DE602005006858D1 (ja)
HK (1) HK1076159A1 (ja)
SG (1) SG113616A1 (ja)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602006007101D1 (de) * 2006-03-24 2009-07-16 Nivarox Sa Unruh für Uhrwerk
EP2104005A1 (fr) * 2008-03-20 2009-09-23 Nivarox-FAR S.A. Balancier composite et son procédé de fabrication
EP2677369B1 (fr) 2010-06-11 2015-01-14 Montres Breguet SA Balancier haute fréquence pour pièce d'horlogerie
EP2410386B1 (fr) * 2010-07-19 2018-10-03 Nivarox-FAR S.A. Balancier à réglage d'inertie avec insert
EP2410387B1 (fr) 2010-07-19 2016-07-06 Nivarox-FAR S.A. Balancier à réglage d'inertie sans insert
CH703574B1 (fr) * 2011-03-22 2016-09-30 Lvmh Swiss Mft Sa Organe régulateur pour montre-bracelet mécanique et chronographe muni d'un tel organe régulateur.
CH703576A3 (fr) * 2011-03-22 2012-03-15 Lvmh Swiss Mft Sa Mouvement mécanique pour montre chronographe.
US8751346B2 (en) * 2011-05-13 2014-06-10 Edea, Llc. Interactive financial tool
EP2631721A1 (fr) * 2012-02-23 2013-08-28 Richemont International S.A. Composants horlogers en titane revêtus de diamant
EP2667265A1 (fr) * 2012-05-22 2013-11-27 The Swatch Group Research and Development Ltd. Composant d'habillage d'horlogerie bi-métal brasé
EP2703909A1 (fr) * 2012-09-04 2014-03-05 The Swatch Group Research and Development Ltd. Résonateur balancier - spiral appairé
EP2728422A1 (fr) * 2012-11-06 2014-05-07 The Swatch Group Research and Development Ltd. Composant d'habillage d'horlogerie bi-métal soudé
CN107505826B (zh) * 2013-02-25 2020-06-30 精工电子有限公司 温度补偿型摆轮及其制造方法、钟表用机芯、机械式钟表
CN105182722A (zh) * 2015-07-13 2015-12-23 济南大学 一种时计机芯摆轮
US10338259B2 (en) 2015-12-14 2019-07-02 Covidien Lp Surgical adapter assemblies and wireless detection of surgical loading units
EP3252541A1 (fr) 2016-06-01 2017-12-06 Rolex Sa Pièce de fixation d'un ressort-spiral horloger
EP3252542B1 (fr) * 2016-06-01 2022-05-18 Rolex Sa Pièce de fixation d'un ressort-spiral horloger
CN106950812B (zh) * 2017-05-11 2022-04-29 李国强 一种有卡度摆轮可锁紧快慢针微调机构
EP3502786A1 (fr) * 2017-12-22 2019-06-26 The Swatch Group Research and Development Ltd Balancier pour pièce d'horlogerie et procédé de fabrication d'un tel balancier
EP3647883A1 (fr) * 2018-11-05 2020-05-06 CSEM Centre Suisse D'electronique Et De Microtechnique SA Balancier d'une piece d'horlogerie
EP3835879B1 (fr) * 2019-12-09 2024-01-24 The Swatch Group Research and Development Ltd Mecanisme resonateur d'horlogerie avec masse inertielle a reglage d'inertie et de balourd
CN112327590B (zh) * 2020-10-28 2021-08-20 深圳市格雅表业有限公司 一种摆轮机构及应用该摆轮机构的机芯

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1987070U (ja) * 1968-06-06 Gebruder Jun, hans GmbH, 7230 Schramberg Schaltradanordnung fur eine Unruh Uhr 4 10 67
US2004814A (en) * 1934-08-29 1935-06-11 Knobel Max Clock movement
US2291455A (en) * 1939-08-10 1942-07-28 Waltham Watch Co Method of making balance wheels
US2663139A (en) * 1949-10-31 1953-12-22 Gibbs Mfg And Res Corp Pallet lever construction
CH316831A (fr) * 1953-09-22 1956-10-31 Gibbs Manufacturing And Resear Echappement pour instruments à mouvement d'horlogerie
US3034286A (en) * 1957-04-30 1962-05-15 Straumann Inst Ag Escapement
FR1275357A (fr) * 1960-12-01 1961-11-03 Straumann Inst Ag Balancier pour montres
FR1301938A (fr) * 1961-07-11 1962-08-24 Lip Sa Balancier pour mécanisme d'horlogerie et son procédé de fabrication
US3620005A (en) * 1967-10-04 1971-11-16 Messrs Gebruder Junghans Gmbh Ratchet wheel device for a balance wheel clock
US4041693A (en) * 1972-09-01 1977-08-16 Les Fabriques D'assortiments Reunies Escapement for a timepiece
CH621669GA3 (en) * 1977-12-23 1981-02-27 Method of manufacturing a pivoted clockwork balance and clockwork balance obtained according to this method
EP1039352B1 (fr) * 1999-03-26 2003-10-08 Rolex Sa Spiral autocompensateur pour balancier-spiral de mouvement d'horlogerie et procédé de traitement de ce spiral

Also Published As

Publication number Publication date
DE602005006858D1 (de) 2008-07-03
HK1076159A1 (en) 2006-01-06
CN1652046B (zh) 2010-05-26
SG113616A1 (en) 2005-08-29
CN1652046A (zh) 2005-08-10
JP2005221498A (ja) 2005-08-18
EP1562087A1 (fr) 2005-08-10
ATE396430T1 (de) 2008-06-15
US20050174893A1 (en) 2005-08-11
JP4537219B2 (ja) 2010-09-01

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