EP2687916A1 - Ancrage pour un échappement de montre dans une montre mécanique - Google Patents

Ancrage pour un échappement de montre dans une montre mécanique Download PDF

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Publication number
EP2687916A1
EP2687916A1 EP13187564.3A EP13187564A EP2687916A1 EP 2687916 A1 EP2687916 A1 EP 2687916A1 EP 13187564 A EP13187564 A EP 13187564A EP 2687916 A1 EP2687916 A1 EP 2687916A1
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EP
European Patent Office
Prior art keywords
anchor
arms
armature
anchor according
fork
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
EP13187564.3A
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German (de)
English (en)
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EP2687916B1 (fr
Inventor
August Enzler
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Von Gunten Stephane
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Publication of EP2687916A1 publication Critical patent/EP2687916A1/fr
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Publication of EP2687916B1 publication Critical patent/EP2687916B1/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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • G04B15/08—Lever escapements

Definitions

  • the present invention relates to an anchor for a watch escapement in a mechanical movement with escape wheel, comprising two anchor arms, in each of which a pallet is held, and a fork, which acts on the balance.
  • the basic features of the function of a mechanical watch are today well known and well documented.
  • the movements of mechanical watches generally draw their energy from a spring, usually a spiral spring, the elevator spring or the so-called Barillet.
  • This energy is delivered to a gear transmission, which in turn, for example, via pointer elements, the information for the display of the hour reproduces, to the last element, the so-called inhibition.
  • the latter has three functions, namely to count the number of oscillations of the balance, that is, to measure the time, to block the energy of the gear during the additional turn of the balance, and to give the balance an impulse to maintain its oscillating motion.
  • the so-called Swiss lever escapement where each of the pallets held in the anchor alternatively receives an impulse from the escapement wheel to pass it on to the balance, is the most widely used in the watch industry.
  • each stage of the gear train has an efficiency of about 90% to 95%.
  • the tooth engagement and profile of the teeth have been optimized as a result.
  • lubricants however, have the disadvantage of deteriorating over time, namely aging, oxidizing, cracking and rancidity.
  • lubricants are susceptible to the absorption of dust and tend to harden. Lubricants are therefore hardly used for bearing journals of the anchor.
  • the anchor as a whole is denoted by A.
  • the anchor has two anchor arms B, in each of whose ends a pallet C is held.
  • a Fork D on In the middle between the two anchor arms in their connection area engages a Fork D on, which is practically perpendicular or at least on an angle bisector of the two armature arms.
  • the fork D ends in tines E and the pivotal movement of the armature or the fork D is limited by two lateral anchor boundary pins F in the pivoting movement. This pivoting movement takes place about a bearing axis G with bilateral bearing journals H, which rest in bearing stones, not shown here.
  • the anchor according to the invention is always designated 1.
  • this anchor has two anchor arms 2 as a conventional anchor.
  • the pallets 3 are held at the end in the two anchor arms 2.
  • These two armature arms 2 are integrally connected to each other and in the connection area, the fork 4 engages the armature.
  • the fork 4 is practically perpendicular to the two armature arms 2, when they are stretched aligned with each other. If the two anchor arms 2 enclose an angle deviating from the angle 180 °, the fork 4 lies on the bisector of said angle.
  • connection region 6 The region in which the fork 4 is connected to the two armature arms 2 is defined here as the connection region 6.
  • two fastening arms 7 engage.
  • These attachment arms 7 extend exactly straight in the simplest embodiment shown here. With respect to the central axis through the fork 4, the two attachment arms 7 extend mirror-symmetrically. Consequently, so forms the fork 4 and the center axis bisecting the angle with respect to the two mounting arms 7 include each other.
  • fasteners 8 Terminal at the two mounting arms 7 are fasteners 8, which are configured in the preferred embodiment here as an annular eyelets. Accordingly, the following is also spoken of eyelets 8, the expert will understand, of course, other fastener forms underneath.
  • fasteners as eyelets is therefore preferred because they are both suitable to be connected by means of screws with a corresponding fixed part of the movement, for example, the movement board.
  • eyelets 8 are also suitable for a soldered or welded connection as well as for an adhesive connection. For the latter types of connection but simple disc-shaped embodiments of the fasteners would be just as suitable.
  • the introduction of force takes place, as in the case of a conventional anchor, by the escape wheel via the pallets 3.
  • the entire anchor 1 is usually made in one piece, with the exception of the two pallets 3, of a plate-shaped material. It is preferable to choose a high modulus material.
  • the force exerted by the escape wheel on the pallets 3 force leads to a bending deformation of the mounting arms 7.
  • the width b of the mounting arms 7 is kept as small as possible.
  • the height h of the attachment arms 7 is a multiple of the width b of these arms.
  • each mounting arm 7 is made as long as possible and as thin as possible in width.
  • the height of each attachment arm 7 is of course not free, since this must be sufficiently large so as not to obtain rotational degrees of freedom that are not in the plane of the anchor.
  • the height of the mounting arm 7 also very small, so each arm 7 would behave like threads and would be stiff only on train and pressure but otherwise very flexible in all Biegerept.
  • this is not desirable, but the freedom of movement should be limited to a bending movement of each mounting arm 7 within the extension plane in which the anchor is located.
  • the armature 1 should rotate about a predetermined virtual axis without offset movement of the center.
  • This problem can be largely reduced, for example, by allowing the mounting arms 7, as in the FIGS. 5 and 6 represented, designed.
  • the attachment arms 7 designed with two parallel elastic sections 70 and 71. These two sections 70 and 71 are hairpin-like. The two sections are parallel and arranged in opposite directions.
  • the two elastic partial sections 70, 71 are connected to one another via a thickened connection point 72.
  • the first elastic section 70 thus extends between the thickened connection point 72 and the connection region 6 of the armature 1 or to a thickened part of the attachment arms 7 which is referred to here as the connection part 73.
  • the second elastic section 71 extends from the thickened connection point 72 to a thickened fastening arm part 74, on which the fastening element or fastening eye 8 is formed at the end.
  • the fastening elements 8 are designed such that they themselves form stops which limit the oszilierende rotational movement of the fork 4.
  • the attachment lugs 8 movement limiting stops 9 which are designed in the form of bulges in the direction of the fork 4 out.
  • these attachment limit stops 9 are monolithically designed as part of the fasteners or eyelets 8 in turn.
  • FIGS. 7 and 8 there is also a fourth in the FIGS. 7 and 8 shown embodiment.
  • the embodiments described so far also have a small residual rigidity in the direction of movement. Although part of the momentum given by the armature 1 to the balance is also returned by it, part of the work is spent on the movement of the armature 1 itself and on the elastic deformation work of its attachment arms. This work is significantly lower than the energy delivered by the escapement wheel.
  • it is proposed in this embodiment again monolithically integrally form a zugelasticians spring element 10 on the armature 1 again. At the free end of the elastic spring element 10, a mounting plate 11 is attached.
  • the mounting plate 11 can be adjustably screwed by means of a screw on the board of the clockwork.
  • the bias of the zugelastischen spring element 10 can be adjusted.
  • the zugelastician spring element 10 is located in the same plane as the mounting arms 7 and the other parts of the inventive anchor 1.
  • the attachment arms 7 must be fastened with their fastener 8 either on the same board of the movement or at least on another fixed part of the movement, the lies in the same plane.
  • the zugelastician spring element 10 has a much smaller width b in relation to height h.
  • the zugelastician spring element 10 may in principle any Own form, which deviates from a straight line.
  • the zugelastician spring element 10 could be designed as a simple arcuately curved arm or as shown here, as in the plane meandering extending route.
  • the two fastening arms 7 are arranged mirror-symmetrically with respect to the central longitudinal axis of the fork 4, a different solution is shown here.
  • the elastic attachment arms 7 are in turn as elongated elements between the connecting portion 6 and the terminal fasteners 8, which in turn are configured here as eyelets, extending.
  • These two fastening arms 7 are now both arranged on the same side of the fork 4 between these and an armature arm 2.
  • the zugelastician spring element 10 is now placed so that the connecting line between the center of the elongated hole 12 and the point of attachment of the zugelastischen spring element 10 at the connecting portion 6, the bisecting line between the two mounting arms 7.
  • the virtual axis of rotation is always at the intersection of the extensions of the two mounting arms 7. While in the examples described above, where the mounting arms 7 are arranged mirror-symmetrically with respect to the fork 4, this virtual axis of rotation can also lie outside the connection area 6, it is in the Embodiment according to the FIGS. 7 and 8 preferably such that the virtual axis of rotation lies in the center of the connecting region 6. In other words, the location of the virtual axis of rotation can thus be determined virtually freely by the choice of the arrangement of the fastening arms 7.
  • FIG. 7 is contrary to FIG. 8 also shown the possibility that the pallets 3 also monolithic one piece and thus made of the same material as the anchor 1 in one operation.
  • a manufacturing process for the manufacture of the inventive armature 1 in which the boundary edges of the armature are extremely regularly finished with a very low roughness, friction losses are also reduced.
  • two methods are suitable for the production.
  • One method is called a DRIE method.
  • DRIE Deep Reactive Ion Etching. This procedure was developed by the company Bosch and in this regard, for example, to the documents DE-3927163 or DE-4420962-A directed.
  • fastening arms 7 can be produced with a very small width.
  • the attachment arms 7 are made with a width of 15-50 microns.
  • the geometry of an inventive armature 1 produced in this way has an extreme accuracy, with deviations which are usually less than one micrometer.
  • silicon in the form of wafers may be considered as the material of manufacture for this process.
  • This material is particularly suitable for the production of the inventive anchor.
  • this material has ideal properties for this application. It has a high mechanical strength and a very low plastic deformability, so that the areas with large thickness in the loading direction have virtually no deformation. This leads to extremely low losses. Material fatigue practically does not occur as long as the applied stresses at the alternating stresses are kept below the elastic breaking point.
  • silicon has a very low coefficient of friction. The only problem is that the parts etched by the DRIE method have very sharp edges. For the watchmaker who works with the tweezers, it is thus possible for the watchmaker to produce very high pressures locally on the sharp edges. This can lead to the destruction of the anchor.
  • the silicon oxide and the silicon nitride also have tribological advantages in which in turn the coefficient of friction is positively influenced.
  • silicon is the preferred material for the anchor, it can also be made of quartz, pyrex glass, sapphire or diamond. All these materials can be produced synthetically, are accordingly hard and abrasion resistant. In addition, these materials can be at least partially processed by the DRIE method.
  • Another preferred manufacturing method is known from the so-called LIGA technology. With regard to the LIGA process, reference is made, for example, to the European patents EP-0183910A or the EP-1431844-A as well as on the U.S. Patent 6458263-B directed. In particular, nickel or nickel phosphorus compounds are used for the LIGA process. Also by means of this method, an anchor according to the invention can be produced with the required dimensions and accuracy, which has the desired physical properties.
  • the LIGA process is a lithographic-galvanic etching process.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Micromachines (AREA)
  • Table Equipment (AREA)
EP13187564.3A 2007-09-13 2008-09-11 Ancre pour un échappement de montre dans une montre mécanique Active EP2687916B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH14292007A CH708113B1 (de) 2007-09-13 2007-09-13 Anker für eine Uhrenhemmung.
EP08164108.6A EP2037335B1 (fr) 2007-09-13 2008-09-11 Ancre pour échappement d'horlogerie

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP08164108.6A Division EP2037335B1 (fr) 2007-09-13 2008-09-11 Ancre pour échappement d'horlogerie

Publications (2)

Publication Number Publication Date
EP2687916A1 true EP2687916A1 (fr) 2014-01-22
EP2687916B1 EP2687916B1 (fr) 2016-06-08

Family

ID=39768809

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13187564.3A Active EP2687916B1 (fr) 2007-09-13 2008-09-11 Ancre pour un échappement de montre dans une montre mécanique
EP08164108.6A Active EP2037335B1 (fr) 2007-09-13 2008-09-11 Ancre pour échappement d'horlogerie

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08164108.6A Active EP2037335B1 (fr) 2007-09-13 2008-09-11 Ancre pour échappement d'horlogerie

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EP (2) EP2687916B1 (fr)
CH (1) CH708113B1 (fr)

Families Citing this family (27)

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Publication number Priority date Publication date Assignee Title
CH702928B1 (fr) * 2010-04-01 2015-07-15 Rolex Sa Dispositif de blocage pour roue dentée.
CN103097965B (zh) * 2010-07-19 2015-05-13 尼瓦洛克斯-法尔股份有限公司 具有弹性枢轴的振荡机构和用于传递能量的可动元件
EP2455821B2 (fr) 2010-11-18 2018-11-14 Nivarox-FAR S.A. Mobile de transmission d'énergie
EP2431823A1 (fr) 2010-09-16 2012-03-21 Blancpain S.A. Echappement blancpain à ancre amélioré pour mouvement d'horlogerie
EP2466395A1 (fr) * 2010-12-14 2012-06-20 Chopard Technologies SA Ancre et échappement muni d'une telle ancre
EP2652559B1 (fr) * 2010-12-14 2019-04-24 Chopard Technologies SA Ancre et échappement muni d'une telle ancre
CN104220941B (zh) 2012-03-29 2017-03-22 尼瓦洛克斯-法尔股份有限公司 具有无圆盘的摆轮的柔性擒纵机构
CH706274B1 (fr) * 2012-03-29 2016-12-15 Nivarox Far Sa Mécanisme d'échappement horloger comprenant un mécanisme flexible monobloc pour la transmission d'impulsions entre le balancier et la roue d'échappement.
JP5918438B2 (ja) * 2012-03-29 2016-05-18 ニヴァロックス−ファー ソシエテ アノニム 可動フレームを備えた可撓性エスケープ機構
EP2831676B1 (fr) * 2012-03-29 2017-11-15 Nivarox-FAR S.A. Mecanisme d'echappement flexible sans ancre
EP2730980B1 (fr) * 2012-11-09 2018-08-29 Nivarox-FAR S.A. Mécanisme horloger de limitation ou transmission
CH708937B1 (fr) 2013-12-12 2020-03-31 Richemont Int Sa Elément oscillant pour mouvement horloger.
EP2947522B1 (fr) * 2014-05-20 2017-05-03 Société anonyme de la Manufacture d'Horlogerie Audemars Piguet & Cie Ancre d horlogerie pour oscillateur mécanique et mécanisme de déclenchement temporisé d horlogerie
EP2998800B1 (fr) 2014-09-16 2019-01-16 Patek Philippe SA Genève Composant horloger à pivot flexible
EP3037893B1 (fr) 2014-12-22 2018-02-28 Patek Philippe SA Genève Composant micromécanique ou horloger à guidage flexible
EP3040783B1 (fr) 2014-12-22 2017-07-26 Manufacture et fabrique de montres et chronomètres Ulysse Nardin Le Locle SA Sous-ensemble pour un mécanisme de réglage d'une vitesse dans un mouvement horloger et un tel mécanisme
CH710759A2 (fr) 2015-02-20 2016-08-31 Nivarox Far Sa Oscillateur pour une pièce d'horlogerie.
CH710837B1 (fr) 2015-03-11 2022-11-30 Csem Ct Suisse Delectronique Microtechnique Sa Rech Developpement Butée antichoc pour organe mobile.
CH711573A2 (fr) 2015-09-29 2017-03-31 Patek Philippe Sa Geneve Mouvement horloger comprenant un système de guidage flexible.
CH711574A2 (fr) 2015-09-29 2017-03-31 Patek Philippe Sa Geneve Composant mécanique à guidage flexible, notamment pour mouvement horloger.
CH712068B1 (fr) * 2016-01-29 2019-11-29 Eta Sa Mft Horlogere Suisse Mécanisme résonateur d'horlogerie à pivot virtuel.
EP3479175B1 (fr) * 2016-06-29 2022-11-09 Patek Philippe SA Genève Mouvement d'horlogerie mecanique
CH713143A1 (fr) 2016-11-17 2018-05-31 Richemont Int Sa Échappement pour pièce d'horlogerie.
CH713144A1 (fr) * 2016-11-17 2018-05-31 Richemont Int Sa Échappement pour pièce d'horlogerie.
CH713288A1 (fr) * 2016-12-23 2018-06-29 Sa De La Manufacture Dhorlogerie Audemars Piguet & Cie Composant monolithique flexible pour pièce d'horlogerie.
NL2023822B1 (en) * 2019-09-12 2021-05-17 Flexous Mech Ip B V Chronograph watch
CH716605A1 (fr) 2019-09-16 2021-03-31 Richemont Int Sa Procédé de fabrication d'une pluralité de résonateurs sur une plaquette.

Citations (12)

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Publication number Priority date Publication date Assignee Title
CH342897A (fr) 1956-11-08 1959-11-30 Huguenin Pierre Louis Dispositif d'échappement à ancre pour mouvement d'horlogerie
CH510285A (fr) 1969-10-22 1971-03-31 Far Fab Assortiments Reunies Echappement à ancre pour pièce d'horlogerie
CH570644B5 (fr) 1972-09-01 1975-12-15 Far Fab Assortiments Reunies
CH965973A4 (fr) * 1973-07-03 1976-11-30
EP0018391A1 (fr) 1978-06-13 1980-11-12 Linden Alimak Ab Appareil de boulonnage automatique pour consolider la roche.
DE3927163A1 (de) 1989-08-17 1991-02-21 Bosch Gmbh Robert Verfahren zur strukturierung eines halbleiterkoerpers
DE4420962A1 (de) 1994-06-16 1995-12-21 Bosch Gmbh Robert Verfahren zur Bearbeitung von Silizium
EP1013949A1 (fr) 1998-12-17 2000-06-28 Sysmelec SA Pivot flexible à grande course angulaire et à rigidité élevée
US6458263B1 (en) 2000-09-29 2002-10-01 Sandia National Laboratories Cantilevered multilevel LIGA devices and methods
EP1431844A1 (fr) 2002-12-19 2004-06-23 SFT Services SA Assemblage pour organe régulateur d'un mouvement d'horlogerie
WO2007003539A2 (fr) 2005-07-04 2007-01-11 Montres Breguet S.A. Echappement a ancre a haut rendement
EP1770452A1 (fr) * 2005-09-30 2007-04-04 Peter Baumberger Echappement à detente pour pièce d'horlogerie

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CH437146A (fr) * 1965-08-11 1967-11-30 Far Fab Assortiments Reunies Dispositif de maintien d'une ancre d'échappement contre les butées de limitation
DE3440109A1 (de) 1984-11-02 1986-05-07 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Verfahren zur herstellung verformbarer vielfach-verbindungen fuer den elektrischen anschluss mikroelektronischer bauelemente und nach diesem verfahren hergestellte vielfachverbindungen
FR2731715B1 (fr) * 1995-03-17 1997-05-16 Suisse Electronique Microtech Piece de micro-mecanique et procede de realisation
EP1538490B1 (fr) * 2003-12-04 2007-05-30 Montres Breguet S.A. Echappement à détente pour montre-bracelet

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH342897A (fr) 1956-11-08 1959-11-30 Huguenin Pierre Louis Dispositif d'échappement à ancre pour mouvement d'horlogerie
CH510285A (fr) 1969-10-22 1971-03-31 Far Fab Assortiments Reunies Echappement à ancre pour pièce d'horlogerie
DE2050013A1 (de) 1969-10-22 1971-04-29 Dassortiments Reunies Sa Fab Ankerhemmung fur Uhrwerke
CH570644B5 (fr) 1972-09-01 1975-12-15 Far Fab Assortiments Reunies
CH965973A4 (fr) * 1973-07-03 1976-11-30
EP0018391A1 (fr) 1978-06-13 1980-11-12 Linden Alimak Ab Appareil de boulonnage automatique pour consolider la roche.
DE3927163A1 (de) 1989-08-17 1991-02-21 Bosch Gmbh Robert Verfahren zur strukturierung eines halbleiterkoerpers
DE4420962A1 (de) 1994-06-16 1995-12-21 Bosch Gmbh Robert Verfahren zur Bearbeitung von Silizium
EP1013949A1 (fr) 1998-12-17 2000-06-28 Sysmelec SA Pivot flexible à grande course angulaire et à rigidité élevée
US6458263B1 (en) 2000-09-29 2002-10-01 Sandia National Laboratories Cantilevered multilevel LIGA devices and methods
EP1431844A1 (fr) 2002-12-19 2004-06-23 SFT Services SA Assemblage pour organe régulateur d'un mouvement d'horlogerie
WO2007003539A2 (fr) 2005-07-04 2007-01-11 Montres Breguet S.A. Echappement a ancre a haut rendement
EP1770452A1 (fr) * 2005-09-30 2007-04-04 Peter Baumberger Echappement à detente pour pièce d'horlogerie

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
W.H. WITTRICK: "The properties of crosslecture pivots and the influence of the point at which strips cross", THE AERONAUTIQUE, 1951

Also Published As

Publication number Publication date
EP2037335B1 (fr) 2014-01-08
EP2037335A3 (fr) 2012-08-29
CH708113B1 (de) 2014-12-15
EP2687916B1 (fr) 2016-06-08
EP2037335A2 (fr) 2009-03-18

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