EP2413202A1 - Verfahren zur Verbesserung der Verschleiss- und Stossfestigkeit einer Uhrwerkskomponente. Verschleiß- und stoßfester Anker für Uhrwerk - Google Patents

Verfahren zur Verbesserung der Verschleiss- und Stossfestigkeit einer Uhrwerkskomponente. Verschleiß- und stoßfester Anker für Uhrwerk Download PDF

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Publication number
EP2413202A1
EP2413202A1 EP10171477A EP10171477A EP2413202A1 EP 2413202 A1 EP2413202 A1 EP 2413202A1 EP 10171477 A EP10171477 A EP 10171477A EP 10171477 A EP10171477 A EP 10171477A EP 2413202 A1 EP2413202 A1 EP 2413202A1
Authority
EP
European Patent Office
Prior art keywords
slot
anchor
horn
chamber
elastic
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
EP10171477A
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English (en)
French (fr)
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EP2413202B1 (de
Inventor
David Richard
Andrés Cabezas Jurin
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 EP10171477.2A priority Critical patent/EP2413202B1/de
Priority to CN201310176181.9A priority patent/CN103257564B/zh
Priority to CN2011102151799A priority patent/CN102375401B/zh
Priority to RU2011132193/28A priority patent/RU2569188C2/ru
Priority to US13/195,346 priority patent/US8540418B2/en
Priority to JP2011168116A priority patent/JP5374554B2/ja
Publication of EP2413202A1 publication Critical patent/EP2413202A1/de
Priority to HK12108988.3A priority patent/HK1168913A1/xx
Priority to HK13110671.0A priority patent/HK1183346A1/zh
Application granted granted Critical
Publication of EP2413202B1 publication Critical patent/EP2413202B1/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
    • G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
    • G04B43/002—Component shock protection arrangements
    • 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

Definitions

  • the invention relates to a method for improving wear resistance and impact resistance of a clockwork component performing a pulse or percussion function during discontinuous contacts at at least one contact surface. that comprises an end contact zone called horn.
  • the invention relates to an anchor for a clockwork escapement mechanism, comprising at least one fork defining a fork entry which comprises horns arranged to cooperate with a beam.
  • the invention also relates to an escape mechanism comprising such an anchor.
  • the invention also relates to a timepiece comprising at least one such anchor, and / or such an escape mechanism, and / or at least one component made or improved according to this method.
  • the invention relates to the field of watch mechanisms, and more particularly the field of escape mechanisms.
  • the anchor cooperates, on the one hand with a balance, and on the other hand with an escape wheel.
  • an anchor works on shocks, on the one hand at the level of its fork, with horns, which cooperate with the balance plate pin and with the plateau ellipse, and of on the other hand at the level of pallets which cooperate periodically with the escape wheel.
  • These incessant shocks are generators of wear, and therefore of degradation of the properties of the movement over time.
  • the wear of the fork inlets results in a decrease in the overall efficiency of the exhaust, and in the amplitude drop. The problem is therefore to reduce the wear of the escapement mechanism, in particular the anchor, and to make elastic the contact zone between the anchor and the balance, respecting a certain bulk imposed by the mechanism.
  • the patent document is still known EP 1 870 784 in the name of OMEGA, which describes a serrated wheel with teeth, and proposes a solution to prevent these teeth from being damaged by shocks.
  • the wheel according to this patent comprises flexible and curved arms, these arms bending tangentially, with a decreasing width towards the periphery of the wheel. These arms each have an end tooth, which is also flexible. If such a wheel may be suitable for an escape wheel, its arrangement is less suitable, in the same way as for the previous patent document, the particular kinematics related to certain components such as anchors. Furthermore, the equipment of an escape mechanism by such an escape wheel involves the replacement of the original wheel by this special wheel, without the possibility of reuse of the previous one.
  • the stroke inherent to the flexibility of the arms, evaluated at the level of the teeth is of the order of a few hundredths to a few tenths of a millimeter, which may prove to be too important in certain mechanisms.
  • the object of the present invention is to overcome all or part of the disadvantages mentioned above.
  • the invention has sought to make elastic the contact area between the anchor and the balance, while respecting a certain size.
  • the invention relates to a method for improving wear resistance and shock resistance of a clockwork component performing a pulse or percussion function during discontinuous contacts at the level of at least a contact surface that comprises an end contact zone called horn, characterized in that provides flexibility to said end horn by arranging it by making at least one slot or a micrometer chamber in the vicinity of said contact surface or said contact surfaces, for delimiting at least one elastic lip extending between said contact surface and said at least one slot or chamber.
  • said elastic lip is made comprising, on one of its external surfaces, at least one said contact surface.
  • said slot or chamber is made substantially perpendicular to a plane in which said component develops, said plane being itself orthogonal to said contact surface or to said contact surfaces.
  • said opening slot is made at the level of lateral surfaces that comprises said horn parallel to said plane, by wire electro-erosion, or by laser, or, when one chooses to manufacture said material component.
  • said slot is produced during the manufacture of said component according to the MEMS technologies or according to the "LIGA” method.
  • said chamber is made in the thickness of said horn, without access to any of the external surfaces thereof, during the manufacture of said component made of micro-machinable material according to the MEMS technologies or according to the "LIGA" method.
  • the invention also relates to an anchor for a watch movement escapement mechanism, produced by this method, and comprising at least one fork defining a fork entry which comprises horns arranged to cooperate with a balance, characterized in that said fork entry comprises, at the level of at least one said horn, a slot and / or a chamber, said slot or chamber being arranged to provide the corresponding horn with an elasticity which makes it possible to soften the shock during each pulse, in absorbing part of the impact energy, then restoring it after this impact.
  • the invention also relates to an escape mechanism comprising such an anchor.
  • the invention also relates to a timepiece comprising at least one such anchor, and / or such an escape mechanism, and / or at least one component made or improved according to this method.
  • the invention relates to a method for improving wear resistance and impact resistance of a clockwork component performing a pulse or percussion function during discontinuous contacts at at least one contact surface.
  • a clockwork component performing a pulse or percussion function during discontinuous contacts at at least one contact surface.
  • horn is chosen to simplify the presentation. If, in general, the components which are preferred to apply the invention are salient, they may equally well include reentrant surfaces, and the invention applies in the same way.
  • flexibility is provided to this end horn by arranging it by making at least one slot or a micrometer chamber in the vicinity of the contact surface or the contact surfaces as the case may be, to delimit at least one elastic lip extending between said contact surface and said at least one slot or chamber, as visible on the Figures 1, 2, 3, 6, and 7 .
  • said at least one elastic lip is made comprising, on one of its external surfaces, at least one said contact surface.
  • This method can be implemented both in the manufacture of new components, as part of an improvement of existing components. However, as will be seen in the following description, some embodiments are reserved for new confections. This is particularly the case when one chooses to make the clock component in a micro-machinable material according to the MEMS technologies or according to the "LIGA" method, which is particularly suitable for the implementation of the invention.
  • this slot or chamber is made so as to define this elastic lip between this contact surface, this slot or chamber, and at least one other peripheral surface of the horn.
  • this lip and therefore this slot or chamber, is produced substantially perpendicularly or perpendicularly to a plane along which the component develops, this plane being itself orthogonal to the contact surface or contact surfaces as appropriate.
  • At least one slot emerging at the level of lateral surfaces that the horn comprises parallel to this plane is carried out by wire electro-erosion, or by laser, or, when one chooses to manufacture said component made of micro material -usable by MEMS technology or according to the "LIGA” process, this slot is made during the manufacture of the component during its manufacture according to MEMS technologies or according to the "LIGA” method.
  • the latter is made in the thickness of the horn, without access to any of the external surfaces. of the latter, during the manufacture of said micro-machinable material component according to MEMS technologies or according to the "LIGA" method.
  • the making of such chambers is also possible with more traditional materials such as steel or alloys, but then involves a more expensive multi-layer realization.
  • the width that is to say the smallest dimension of the slot or the chamber, be very small, so as to provide the flexibility of the elastic lip, but without allowing a movement detrimental to the held in time.
  • FIGs 9 and 10 schematize the deformation of an elastic lip 20 arranged at a horn 3 of an anchor 1, in the vicinity of a slot 5.
  • An impact force F is applied at a contact surface S. last is at a distance L1 from the embedding point A of the elastic lip 5, which has a total length L2.
  • the slot 5 has a width E1, and the lip 20 has a thickness E2.
  • the deformation of the lip 20, over its entire length AB, is L2, remains in the elastic domain, this deformation dependent on the material, F, E2, and L1 or L2.
  • it is made to limit the smallest dimension of the elastic lip, to give it sufficient flexibility.
  • width E2 is an important parameter of its dimensioning, because it must be ensured that the combination of the impact force F and the dimensions of the elastic lip causes deformations of the lip in its elastic domain.
  • the width E2 of the elastic lip is less than a quarter of its length L2, and preferably less than one-eighth of L2. In a preferred application, this width E2 is, again, less than or equal to 30 ⁇ m.
  • the smallest dimension of the slot E1 must be just large enough to prevent any contact of the point B of the lip with the other part of the horn 3.
  • this slot or chamber is made with a smaller dimension of a few micrometers, in a ratio of less than one eighth with respect to its development in length.
  • it is arranged to also limit the smallest dimension of the elastic lip, to give it sufficient flexibility.
  • the invention is particularly applicable to the components of an escape mechanism, which are the most frequently solicited by constraints related to pulses and shocks.
  • the invention thus relates to an anchor 1 for a watch movement escapement mechanism, comprising at least one fork defining a fork inlet 2.
  • This fork inlet 2 comprises horns 3 and 4 arranged to cooperate at the level of surfaces. S contact, with a rocker, which is not shown in the figures, usually at a plateau pin that includes the pendulum.
  • the fork inlet 2 comprises, at the level of at least one horn 3, 4, and preferably at the level of each horn 3, 4, at least one slot, respectively 5, 6, and / or at least one chamber 30 for delimiting at least one elastic lip 20, 21, extending between a contact surface S, and this slot 5, 6 or chamber 30.
  • Each slot 5, 6, or chamber 30, is arranged to provide the corresponding horn with an elasticity, which makes it possible to soften the shock during each pulse, absorbing part of the impact energy, then restoring it subsequently. to this impact.
  • the slot or the chamber makes it possible to make the contact zone elastic.
  • the function of the slot or chamber is to reduce wear by softening the contacts between the ellipse of the platform or the pendulum plate anchor and the anchor fork, during the release and impulse phases.
  • Another object achieved by the invention is to reduce the phenomenon of adhesion to the exhaust.
  • Each slot or room is in straight or any profile.
  • a room here will be called a volume enclosed in the material and not opening, and will be called slot a space opening on at least one of the outer surfaces of the component concerned.
  • each slot is preferably a few micrometers, and is always very small relative to its development in length, in a ratio preferably of less than one-eighth.
  • each slot extends in at least one oblique direction relative to a plane P in which the fork inlet 2 develops, or even the entire anchor 1 as is generally the case.
  • each slot extends perpendicularly to this plane P.
  • the manufacture of a slot perpendicular to the plane P is preferable because it can be made by wire EDM, or wire cutting, laser, plastic injection, or the like.
  • the anchor 1 can also be made of a more conventional material: uncured steel "S15 P”, lead-free steel "Ck75", aluminum alloy, other metal or alloy.
  • uncured steel "S15 P” lead-free steel "Ck75”
  • aluminum alloy other metal or alloy.
  • the treatment for manufacturing the board from which the anchor is taken is of particular importance, and is well known to those skilled in the art.
  • plastics a polymer such as POM "Hostaform" can be used.
  • a component according to the invention may, in such a material, be produced by laser technology, with a through etching, wire electro-erosion, water jet cutting, or the like.
  • each slot opens at the peripheral contour of the fork inlet 2, that is to say, as the case may be, towards the inside of the horns, that is to say on the the balance plate pin, at an internal surface, respectively 7, 8, or outwardly of the horns, that is to say on the opposite side to the plateau pin, at a level of outer surface, respectively 9, 10.
  • the fork inlet 2 comprises, at the level of at least one horn, and preferably at the level of each horn, a slot 5, 6, which extends perpendicularly to the plane of the anchor, and opens towards the inside.
  • horns that is to say the fork entry 2 on the side of the balance plate pin, at an inner surface 7, 8, delimiting at least one elastic lip 20, 21, s' extending between this inner surface 7, 8, and this slot 5, 6.
  • the fork inlet comprises, at the level of at least one horn, and preferably at the level of each horn, a slot which extends perpendicular to the plane of the anchor, and opens outwards, that is, that is to say on the opposite side to the pendulum plate peg.
  • the slot 5, 6 opens at the peripheral contour of the fork inlet 2 towards the outside of the horns, at an outer surface 9, 10, delimiting at least one elastic lip 20, 21 extending between this outer surface 9, 10, and this slot 5, 6. This arrangement also reduces the intensity of the impacts with the reversal stops.
  • a particular advantage of this arrangement is to limit the over-stresses, in case of impact of the ellipse on the top of the horn, and to limit the risk of breakage, for example breakage of the pendulum pivot.
  • a third variant embodiment combines the embodiments of the first mode and the second mode, with on each horn a slot opening on an inner end surface and a slot opening on an outer end surface.
  • each horn 3, 4 has a slot 5, 6 opening on an inner surface 7, 8 and a slot 5A, 6A opening on an outer surface 9, 10, delimiting a plurality of elastic lips 20, 20A, 20B, 21, 21 A, 21 B, extending between the periphery of the horn 3, 4, the inner surface 7, 8, the outer surface 9, 10, and the slots 5, 5A, 6, 6A.
  • a fourth embodiment variant is represented on the figure 6 , in which the elastic slit 5, 6, is not open on an internal end surface 7, 8, or outer 9, 10, but only on at least one of the side faces 16, 17, that includes the anchor 1, parallel to the plane P of the latter.
  • the slot opens on the two opposite lateral faces.
  • a fifth embodiment variant is shown on the Figures 7 and 8 : it comprises at least one chamber 30 inside a horn, this chamber 30 is not open, and is delimited preferably on the side of the inner end surface 7 and the outer end surface 9, by outer zones of small section 12, 13, so that the end of the horn has an elastic behavior.
  • the chamber 30 is also delimited, on the side of each of the lateral surfaces 16, 17, of the anchor 1, by a lateral zone of small section, 14, 15.
  • the production of an anchor 1 according to this fifth mode is possible by a development in a micro-machinable material according to MEMS technologies, or according to the "LIGA" method or the like, and is particularly easy.
  • the choice of such a micro-machinable material makes it possible, precisely, to make slits or very thin chambers, without having to fear the existence of a local defect in material, a pre-crack, or local over-constraints, which can be further meet with a more traditional steel or alloy.
  • the very small dimensioning of the slot or chamber in its smaller dimension limits the amplitude of vibration of the elastic lips, prevents any non-reversible deformation, and prevents any breakage of these lips.
  • an elastic lip component according to the invention in another material, steel or other alloy, with advantageously a layer deposited on the surface of this component, or a heat treatment and / or surface of this component .
  • the slot or chamber is not filled with air or vacuum, but with another material with different characteristics of the base material, for example an adhesive, or a surface treatment or coating.
  • the base material for example an adhesive, or a surface treatment or coating.
  • This other material may have particular elastic characteristics, which makes it possible to adapt a particular elastic behavior, and to participate in the damping and the anti-wear action.
  • the fact of having a solid component makes it possible to avoid the accumulation of wear waste from the clockwork movement in the slots, which moreover constitutes the advantage of being made with a non-opening chamber.
  • a plurality of slots or substantially parallel chambers, shaped chevron allows, even if they are very small, including a small development in their largest dimension, to give the horn sufficient flexibility.
  • the entire anchor horn is thus made flexible by at least one such slot or chamber, to reduce wear, making elastic the contact zone with the balance.
  • a particular embodiment is made with an anchor 1 made of silicon, or a silicon compound.
  • the invention also relates to an escape mechanism comprising at least one such anchor.
  • the invention also relates to a timepiece comprising at least one such anchor, and / or such an escape mechanism, and / or at least one component made or improved according to this method.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Micromachines (AREA)
  • Springs (AREA)
  • Vibration Dampers (AREA)
EP10171477.2A 2010-07-30 2010-07-30 Verfahren zur Verbesserung der Verschleiss- und Stossfestigkeit einer Uhrwerkskomponente. Verschleiß- und stoßfester Anker für Uhrwerk Active EP2413202B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP10171477.2A EP2413202B1 (de) 2010-07-30 2010-07-30 Verfahren zur Verbesserung der Verschleiss- und Stossfestigkeit einer Uhrwerkskomponente. Verschleiß- und stoßfester Anker für Uhrwerk
CN2011102151799A CN102375401B (zh) 2010-07-30 2011-07-29 用于钟表机芯的耐磨和抗冲击的擒纵杆
RU2011132193/28A RU2569188C2 (ru) 2010-07-30 2011-07-29 Износостойкий и ударопрочный анкерный рычаг часового механизма
CN201310176181.9A CN103257564B (zh) 2010-07-30 2011-07-29 用于钟表机芯的耐磨和抗冲击的擒纵杆
US13/195,346 US8540418B2 (en) 2010-07-30 2011-08-01 Wear and shock resistant escapement lever for a timepiece movement
JP2011168116A JP5374554B2 (ja) 2010-07-30 2011-08-01 耐摩耗性および耐衝撃性の時計ムーブメント用脱進機レバー
HK12108988.3A HK1168913A1 (en) 2010-07-30 2012-09-13 Wear and shock resistant escapement lever for a timepiece movement
HK13110671.0A HK1183346A1 (zh) 2010-07-30 2013-09-16 用於鐘錶機芯的耐磨和抗衝擊的擒縱杆

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10171477.2A EP2413202B1 (de) 2010-07-30 2010-07-30 Verfahren zur Verbesserung der Verschleiss- und Stossfestigkeit einer Uhrwerkskomponente. Verschleiß- und stoßfester Anker für Uhrwerk

Publications (2)

Publication Number Publication Date
EP2413202A1 true EP2413202A1 (de) 2012-02-01
EP2413202B1 EP2413202B1 (de) 2017-11-15

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EP10171477.2A Active EP2413202B1 (de) 2010-07-30 2010-07-30 Verfahren zur Verbesserung der Verschleiss- und Stossfestigkeit einer Uhrwerkskomponente. Verschleiß- und stoßfester Anker für Uhrwerk

Country Status (6)

Country Link
US (1) US8540418B2 (de)
EP (1) EP2413202B1 (de)
JP (1) JP5374554B2 (de)
CN (2) CN102375401B (de)
HK (2) HK1168913A1 (de)
RU (1) RU2569188C2 (de)

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JP5914456B2 (ja) * 2010-04-01 2016-05-11 ロレックス・ソシエテ・アノニムＲｏｌｅｘ Ｓａ 歯車用固定装置
EP2557460A1 (de) * 2011-08-12 2013-02-13 Nivarox-FAR S.A. Metallanker mit Polymer-Hörnern
EP2586879A1 (de) * 2011-10-27 2013-05-01 Nivarox-FAR S.A. Verfahren zur thermischen Behandlung von mikromechanischen Bauteilen von Uhren
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
EP2871535B1 (de) * 2013-11-06 2017-06-28 ETA SA Manufacture Horlogère Suisse Uhranker mit optimierten Hörnern
KR20170125803A (ko) * 2014-12-09 2017-11-15 엘브이엠에이치 스위스 매뉴팩츄어스 에스에이 시계용 장치 및 상기 장치를 구비한 시계
CH713150A2 (fr) * 2016-11-23 2018-05-31 Eta Sa Mft Horlogere Suisse Mécanisme régulateur à résonateur rotatif à guidage flexible entretenu par un échappement libre à ancre.
EP3489766A1 (de) * 2017-11-27 2019-05-29 Montres Breguet S.A. Mechanismus zur korrektur einer bewegungsfunktion einer uhr
JP7052625B2 (ja) * 2018-08-02 2022-04-12 セイコーエプソン株式会社 時計用部品、ムーブメント、時計および時計用部品の製造方法
CH714992A9 (fr) * 2019-01-24 2020-01-15 Csem Centre Suisse Delectronique Et De Microtechnique Sa Régulateur horloger mécanique.
EP3882712B1 (de) * 2020-03-18 2022-11-16 The Swatch Group Research and Development Ltd Mechanisches uhrwerk, dass mit einer uhrhemmung mit einem elastisch deformierbaren anker ausgestattet ist
EP4002018A1 (de) * 2020-11-12 2022-05-25 The Swatch Group Research and Development Ltd Intelligente aufziehvorrichtung einer automatischen armbanduhr mit armbanduhridentifikation

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Publication number Priority date Publication date Assignee Title
US443363A (en) * 1890-12-23 Balance-escapement for time-pieces
US2717488A (en) 1952-01-07 1955-09-13 Gen Horlogere Noiseless anchor-escapement, particularly for clock-works
JPS63130961A (ja) * 1986-11-19 1988-06-03 Kiyouiku Haguruma Kogyo Kk 無背隙歯車
EP0732635A1 (de) 1995-03-17 1996-09-18 C.S.E.M. Centre Suisse D'electronique Et De Microtechnique Sa Mikromechanischer Teil und Verfahren zur dessen Herstellung
EP1380772A1 (de) * 2002-07-10 2004-01-14 Jean-Marc Wiederrecht Zahnradgetriebe mit Überlastungsschutz
EP1555584A1 (de) * 2004-01-13 2005-07-20 Rolex S.A. Gezähntes Drehteil für die Einholung des Spiels, Getriebe, und die Benutzung dieses Getriebes
EP1870784A2 (de) 2006-06-23 2007-12-26 Omega SA Mikromechanische Triebfeder mit durch Stöße geregelter Drehung
EP1983389A1 (de) * 2007-04-18 2008-10-22 ETA SA Manufacture Horlogère Suisse Hemmung, die zwei Hemmungsräder umfasst
WO2010063393A1 (en) * 2008-12-03 2010-06-10 Rolls-Royce Plc A gear

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HK1183346A1 (zh) 2013-12-20
JP5374554B2 (ja) 2013-12-25
CN102375401B (zh) 2013-06-12
CN102375401A (zh) 2012-03-14
US8540418B2 (en) 2013-09-24
CN103257564B (zh) 2015-12-09
CN103257564A (zh) 2013-08-21
RU2011132193A (ru) 2013-02-10
US20120026845A1 (en) 2012-02-02
RU2569188C2 (ru) 2015-11-20
JP2012032399A (ja) 2012-02-16
HK1168913A1 (en) 2013-01-11
EP2413202B1 (de) 2017-11-15

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