EP1705537B1 - Palier amortisseur de chocs pour pièce d'horlogerie - Google Patents

Palier amortisseur de chocs pour pièce d'horlogerie Download PDF

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Publication number
EP1705537B1
EP1705537B1 EP05405263A EP05405263A EP1705537B1 EP 1705537 B1 EP1705537 B1 EP 1705537B1 EP 05405263 A EP05405263 A EP 05405263A EP 05405263 A EP05405263 A EP 05405263A EP 1705537 B1 EP1705537 B1 EP 1705537B1
Authority
EP
European Patent Office
Prior art keywords
bearing
arms
shock
linking arms
absorbing spring
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
EP05405263A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1705537A1 (fr
Inventor
Michel Kohler
Romain Voirol
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.)
Rolex SA
Original Assignee
Rolex 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 Rolex SA filed Critical Rolex SA
Priority to DE602005006731T priority Critical patent/DE602005006731D1/de
Priority to DE05405263T priority patent/DE05405263T1/de
Priority to EP05405263A priority patent/EP1705537B1/fr
Priority to CN200610071784A priority patent/CN100578394C/zh
Priority to US11/387,423 priority patent/US7234859B2/en
Priority to JP2006080569A priority patent/JP4598701B2/ja
Publication of EP1705537A1 publication Critical patent/EP1705537A1/fr
Priority to HK06112526A priority patent/HK1092880A1/xx
Application granted granted Critical
Publication of EP1705537B1 publication Critical patent/EP1705537B1/fr
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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/02—Shock-damping bearings
    • G04B31/04—Shock-damping bearings with jewel hole and cap jewel

Definitions

  • the present invention relates to a shock-absorbing bearing for a timepiece, comprising a bearing body, a pierced bearing stone, a seat for positioning this bearing stone in this bearing body, a counter-pivot, a locating position of this counter-pivot in this bearing body and a shock-absorbing spring for holding said counter-pivot against said positioning seat, said shock-absorbing spring being connected to said bearing body by four connecting arms, parallel to said a plane containing the axis of pivoting of said bearing and forming, on each side of this plane, a suspension element comprising two of said connecting arms connected to each other by an arcuate branch centered on said axis of pivoting and whose radius is different from that of said pivot, these suspension elements being connected to each other by two diametral arms located on either side of a central support element.
  • shock-absorbing bearings intended in particular for the balance shaft have been the subject of a great deal of research work which culminated between the beginning of the 1930s and the end of the 1950s. this area of which 250 in the aforementioned period.
  • the solutions that are currently used give overall satisfaction, which probably explains why this subject is practically no longer subject to new developments.
  • shock-absorbing spring One of the essential elements of such a bearing is the shock-absorbing spring. It should be kept in mind that the dimensions of such a spring are less than 2 mm and are generally around 1.5 mm. These dimensions pose design problems as well with regard to the elastic limits and the plastic deformation, in particular during its fixing, the maintenance of the spring in the event of shocks, the assembly of the spring, the assembly and the disassembly of the bearing.
  • the object of the present invention is to overcome, at least in part, the aforementioned drawbacks.
  • this invention relates to a shock absorbing bearing for a timepiece according to claim 1.
  • the main advantage of the shock absorbing bearing according to the present invention comes from the fact that the attachment of the two diametral arms of the central support element to two of the four connecting arms to the bearing support, allows to form, share and other diametrical arms connecting the central support element to the two suspension elements, two elastic elements allowing an easier installation of the spring, by the significant increase in the range of elastic deformation, while the diametral arms attached on the one hand to the central support part and on the other hand to two connecting arms, constitutes a more rigid element passing through the center of pivoting. This greater rigidity improves the impact resistance.
  • the bearing spring object of the present invention is therefore designed to offer a specialization of functions between its different parts
  • the free ends of the connecting arms are terminated by hooking elements, the elements Each pair of link arms located opposite each other is rotated on the outer side of each pair of link arms.
  • the two pairs of connecting arms of the suspension spring formed by the connecting arms located opposite one another of the two suspension elements, have a central symmetry with respect to the axis of pivoting of the bearing.
  • This characteristic has the advantage of being able to fix the spring on the bearing support in one or other of the two possible positions, at 180 ° to each other around the pivot axis of the bearing, this which significantly facilitates its assembly operations.
  • any pair of connecting arms of the suspension spring, formed by the connecting arms located opposite one another of the two suspension elements can be used indifferently to opening of the bearing or play the role of spring hinge on the support.
  • this spring has no mounting direction on the bearing support, which significantly simplifies the assembly work.
  • the damping spring is of constant thickness and is plane in the rest state. This feature means that any face of the spring can be put on or under. In combination with the central symmetry characteristic, the spring can be put into place in the bearing bracket without prior selection of a face to be oriented above or below or a side to be used for opening or hinge.
  • the profile of the central support portion of the damping spring is chosen to serve as a gauge of the amount of oil in the bearing and for this purpose has at least two radial marks of different radii for determining respectively the maximum and minimum oil quantities, and the centering of this oil with respect to said pivot axis.
  • the attachment elements of the two connecting arms which are not connected to the outer ends of the two diametral arms are longer than the attachment elements of the other two connecting arms.
  • the bearing support comprises a diametrical passage which extends on either side of the seat of said counter pivot, to receive the connecting arms of the damping spring and is of symmetrical conformation with respect to any plane passing through said pivot axis.
  • the bearing with its diametrical passage is designed to receive the central symmetric spring in this diametral passage in any of the two possible positions. No order must be observed for the installation of the damping spring. This symmetry also significantly simplifies the manufacture of the bearing support and requires no stud for the articulation of the spring, which pad is still, given its size, a fragile element and difficult to manufacture.
  • the chamfers exert a force which brings the two connecting arms situated opposite each other closer to one another. the other.
  • the level illustrated by the Figures 1 and 2 comprises a bearing body 1 comprising a frustoconical cup-shaped seat 1a for the positioning of a kitten 2 in the a cylindrical portion from which is thrown a pierced stone 3 and having a seat 2a for a counter-pivot 4.
  • a shock-absorbing spring 5 is fixed to the bearing body 1 to hold the kitten 2 and the counter-pivot 4 resiliently on their respective seats 1a, 2a.
  • the bearing body 1 has the particularity of being entirely symmetrical with respect to all the planes containing the pivot axis X of the bearing.
  • a diametrical milling 1b is formed on the upper part of this bearing body and two parallel milling 1c, perpendicular to the diametrical milling 1b are formed outside the bearing body 1, in its thickness, at a distance from its upper face. .
  • These three millings 1b, 1c are intended for fixing the four connecting arms 5a 1 , 5a 2 , 5a 3 , 5a 4 of the damping spring 5, the two arms 5a 1 , 5a 4 , respectively 5a 2 , 5a 3 located opposite each other being parallel.
  • the width of the diametrical milling 1b corresponds to that of each pair of parallel arms 5a 1 , 5a 4 , respectively 5a 2 , 5a 3 located vis-à-vis one another.
  • the two parallel milling operations 1c are intended to receive the respective hooking ends 5b 1 , 5b 2 , 5b 3 , 5b 4 facing outwards of each pair of parallel arms, of the four connecting arms 5a 1 , 5a 2 , 5a 3 , 5a 4 , thus ensuring the attachment of the damping spring 5 to the bearing body 1.
  • the connecting arms 5a 1 , 5a 2 , 5a 3 , 5a 4 are parallel in pairs and the spacing between the two pairs of arms 5a 1 , 5a 4 , respectively 5a 2 , 5a 3 being equal, so that, for its attachment, the damping spring 5 can be disposed in the milling 1b in any of two symmetrical positions, located 180 ° from each other.
  • the two connecting arms 5a 1 , 5a 2 , respectively 5a 3 , 5a 4 , situated in the extension of one another are connected to each other by two branches in arcs of circles 5c 1 , respectively 5c 2 , centered on the axis of rotation X and whose respective radii are greater than that of the pivoting pivot 4.
  • These two branches in arcs of circles form with the connecting arms 5a 1 , 5a 2 , respectively 5a 3 , 5a 4 , two suspension elements on either side of a plane passing through the pivot axis X of the bearing and by the middle of the diametrical milling 1b.
  • the damping spring 5 further comprises a central support element 5d connected to each of the two suspension elements 5a 1 , 5c 1 , 5a 2 , respectively 5a 3 , 5c 2 , 5a 4 , by two arms 5e aligned diametrically, but connected, in this example, at the junctions between the arm 5a 4 and the arcuate branch 5c 2 , respectively between the arm 5a 2 and the arcuate branch 5c 1 .
  • This particular arrangement makes it possible to have two branches 5a 1 , 5c 1 , respectively 5a 3 , 5c 2 , having a substantially greater elasticity than the arms 5a 2 , 5a 4 and intended to facilitate the installation of the spring and especially to avoid the risk of plastic deformation of the arms during this manipulation.
  • the arms 5a 2 , 5a 4 connected to the diametral arms 5e and the central support member 5d form a substantially more rigid assembly for supporting shocks.
  • damping spring 5 in the undeformed state is flat, so that it has neither top nor bottom, and thus, that any of its faces can be put on or under for its fixation.
  • This feature also facilitates its manufacture which can be obtained for example by the LIGA process, electroforming, stamping, chemical milling or wire.
  • the support element 5d of the spring can advantageously serve as an oil dipstick, for measuring the amount of oil and the centering of the drop of oil between the pierced stone 3 and the counter pivot 4.
  • the shape given to the central support element is chosen so as to enable the presence of oil, its centering and the quantity of oil to be observed by transparency through the pivoting pivot 4.
  • the first condition consists in disengaging the central part of the counter pivot 4.
  • this support element 5d close to a rectangle, but with its two narrow sides in the form of arcs of a circle centered on the pivot axis X of the bearing, according to the figure 2 allows for example to choose the spacing between the two long sides of this kind of rectangle, corresponding to the minimum diameter of the drop of oil, while its two opposite sides in arcs of circles can define the maximum diameter of the drop of oil.
  • a damping spring 15 comprises a central bearing element 15d whose central opening is formed by the alternation of eight concave convex arcs, the four convex arcs being coaxial with the pivot axis X of the bearing and of same radii, while the four concave arcs have the same radii, their centers being situated on the same circle concentric with the pivot axis X of the bearing and spaced 90 ° from each other about the pivot axis X of the bearing.
  • the two diametral arms 15e are connected to the central support element 15d by two arcs of opposite concave circles.
  • the two other concave profile portions of the central support member 15d are delimited externally by two arcs of concentric circles respectively to these two other concave profile parts but smaller radii, which can also be used to measure the amount of oil.
  • the attachment ends 15b 1 , 15b 2 , 15b 3 , 15b 4 , link arms 15a 1 , 15a 2 , 15a 3 , 15a 4 can be elongated relative to those of the figure 2 . It would also be possible to lengthen only the ends 15b 1 , 15b 3 of the most elastic link arms, since they are more likely to be unhooked in the event of shocks than the other two.
  • the figure 4 shows yet another variant of the shape of the bearing member 25d of the spring 25 which comprises, on one side of the diametral arms 25e, a portion in an arc concentric with the pivot axis X of the bearing and the On the other side of these diametrical arms 25e, two portions of the arc extending beyond these diametral arms 25e of the same angular value and whose ends are connected to one another by a concave arcuate segment of a circle. radius substantially greater than that of the arcuate portion centered on the pivot axis X, or by a straight segment.
  • the central bearing element 35d has an annular shape. Since such a form has the drawback of not being able to detect the presence or absence of oil if the edge of the meniscus formed by the drop of oil is in the width of the ring, the latter a radial cut 35f which allows to see the meniscus.
  • chamfers are formed, in particular on both sides of the diametrical milling 1b of the bearing body 1. These chamfers can be used to transform a pressure exerted on the connecting arms 5a 1 , 5a 2 , 5a 3 , 5a 4 of the damping spring in forces that tend to bring the two parallel arms 5a 1 , 5a 4 , respectively 5a 2 , 5a 3 located opposite one another, so that it is possible to set up the damping spring by a simple translation simultaneously exerting pressure on the four connecting arms 5a 1 , 5a 2 , 5a 3 , 5a 4 .
  • Clearances are formed in the upper face of the bearing body 1 in places where the parallel edges of the diametrical milling 1b open into the frustoconical seat 1a of the kitten 2. These clearances 1e are used to introduce tweezers or dowels to release the attachment ends 5b 1 , 5b 2 , 5b 3 , 5b 4 , connecting arms 5a 1 , 5a 2 , 5a 3 , 5a 4 of the bearing body 1. Note that it can be identified that a pair of parallel connecting arms 5a 1 , 5a 4 , or 5a 2 , 5a 3 situated opposite one another, the other pair being used as a hinge to release the pivoting pivot 4.
  • the variant of the damping spring 45 illustrated by the figure 6 differs from the other springs described above essentially in that the diametral arms 45e are no longer connected to the junctions between two connecting arms 5a 2 , 5a 4 and the branches in arcs of circles 5c 1 , respectively 5c 2 , as in the case of the figure 2 for example, but these diametrical arms 45e are connected to the outer ends of the connecting arms 45a 2 , respectively 45a 4 , by a connecting segment 45f 1 , respectively 45f 2 .
  • the diametral arms 45e are in fact connected to the respective attachment ends 45b 2 , 45b 4 of these link arms 45a 2 , 45a 4 .
  • the elastic branches are more elongated since they each comprise all of the two suspension elements 45a 1 , 45c 1 , 45a 2 , respectively 45a 3 , 45c 2 , 45a 4 .

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
  • Testing Of Balance (AREA)
  • Vibration Prevention Devices (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Sliding-Contact Bearings (AREA)
EP05405263A 2005-03-23 2005-03-23 Palier amortisseur de chocs pour pièce d'horlogerie Active EP1705537B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE602005006731T DE602005006731D1 (de) 2005-03-23 2005-03-23 Stoßdämpfende Lagerung für Uhren
DE05405263T DE05405263T1 (de) 2005-03-23 2005-03-23 Stoßdämpfende Lagerung für Uhren
EP05405263A EP1705537B1 (fr) 2005-03-23 2005-03-23 Palier amortisseur de chocs pour pièce d'horlogerie
CN200610071784A CN100578394C (zh) 2005-03-23 2006-03-22 用于时钟的吸震轴承
US11/387,423 US7234859B2 (en) 2005-03-23 2006-03-23 Shock-absorbing bearing for timepiece
JP2006080569A JP4598701B2 (ja) 2005-03-23 2006-03-23 時計用緩衝軸受
HK06112526A HK1092880A1 (en) 2005-03-23 2006-11-14 Shock-proof bearing for timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05405263A EP1705537B1 (fr) 2005-03-23 2005-03-23 Palier amortisseur de chocs pour pièce d'horlogerie

Publications (2)

Publication Number Publication Date
EP1705537A1 EP1705537A1 (fr) 2006-09-27
EP1705537B1 true EP1705537B1 (fr) 2008-05-14

Family

ID=35094614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05405263A Active EP1705537B1 (fr) 2005-03-23 2005-03-23 Palier amortisseur de chocs pour pièce d'horlogerie

Country Status (6)

Country Link
US (1) US7234859B2 (ja)
EP (1) EP1705537B1 (ja)
JP (1) JP4598701B2 (ja)
CN (1) CN100578394C (ja)
DE (2) DE602005006731D1 (ja)
HK (1) HK1092880A1 (ja)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602005025585D1 (de) * 2005-02-23 2011-02-10 Eta Sa Mft Horlogere Suisse Stoßdämpfende Uhrenlagerung
EP1835050A1 (fr) * 2006-03-15 2007-09-19 Doniar S.A. Procédé de fabrication par LIGA-UV d'une structure métallique multicouche à couches adjacentes non entièrement superposées, et structure obtenue
JP5455115B2 (ja) * 2009-10-07 2014-03-26 セイコーインスツル株式会社 時計用軸受、ムーブメントおよび携帯用時計
CN101853001B (zh) * 2010-05-17 2011-08-17 上海关勒铭有限公司 防震座生产工艺
JP5657106B2 (ja) * 2010-06-22 2015-01-21 ザ・スウォッチ・グループ・リサーチ・アンド・ディベロップメント・リミテッド 時計の衝撃吸収軸受
EP2469357B2 (fr) * 2010-12-21 2016-06-29 The Swatch Group Research and Development Ltd. Palier amortisseur de chocs pour un mobile tournant d'un mouvement d'horlogerie
JP5975618B2 (ja) * 2011-10-14 2016-08-23 セイコーインスツル株式会社 てんぷの耐振軸受機構、これを備えたてんぷ及びこれを備えた時計
US9292005B2 (en) * 2011-12-12 2016-03-22 The Swatch Group Research And Development Ltd Shock resistant bearing for a timepiece
EP2677370A1 (fr) * 2012-06-21 2013-12-25 ETA SA Manufacture Horlogère Suisse Système antichoc à montage simplifié pour pièce d'horlogerie
EP2677371A1 (fr) * 2012-06-21 2013-12-25 ETA SA Manufacture Horlogère Suisse Systeme antichoc non demontable pour pièce d'horlogerie
CH707590B1 (fr) * 2013-02-12 2017-08-15 Eta Sa Mft Horlogère Suisse Roue d'horlogerie antichoc, notamment de centre.
CH707813A2 (fr) * 2013-03-19 2014-09-30 Nivarox Sa Structure de mécanisme d'horlogerie pour mobile pivotant.
EP2799937B1 (fr) * 2013-05-01 2020-09-16 Rolex Sa Corps d'amortisseur d'un balancier d'un oscillateur d'horlogerie
EP2806314A1 (fr) * 2013-05-24 2014-11-26 The Swatch Group Research and Development Ltd. Amortisseur de choc a baïonnette
EP2816423A1 (fr) * 2013-06-21 2014-12-24 ETA SA Manufacture Horlogère Suisse Système antichoc à montage sécurisé
CN104154937A (zh) * 2014-08-26 2014-11-19 昆山迈致治具科技有限公司 一种气缸动力型pct治具
CH711219A2 (fr) * 2015-06-16 2016-12-30 Montres Breguet Sa Dispositif magnétique de pivotement d'un arbre dans un mouvement horloger.
EP3220211B1 (fr) * 2016-03-14 2018-10-10 ETA SA Manufacture Horlogère Suisse Systeme antichoc a blocage angulaire
CH712502A2 (fr) * 2016-05-18 2017-11-30 Montres Breguet Sa Dispositif antichoc pour un mouvement horloger.
EP3291026B1 (fr) * 2016-08-30 2020-01-01 ETA SA Manufacture Horlogère Suisse Palier amortisseur de chocs pour pièce d'horlogerie
EP3291025B1 (fr) * 2016-08-30 2020-08-19 Montres Breguet S.A. Amortisseur de chocs multilames
EP3579060B1 (fr) * 2018-06-05 2023-10-18 The Swatch Group Research and Development Ltd Montre thermoélectrique
EP3792702A1 (fr) * 2019-09-13 2021-03-17 ETA SA Manufacture Horlogère Suisse Palier d'un mouvement horloger, notamment amortisseur de choc, pour un axe d'un mobile tournant
EP3839661B1 (fr) * 2019-12-18 2022-08-10 ETA SA Manufacture Horlogère Suisse Dispositif amortisseur de chocs avec verrouillage angulaire
EP3916489A1 (fr) 2020-05-29 2021-12-01 Rolex Sa Ressort d'amortisseur, corps de palier et palier pour piece d'horlogerie

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
CH201334A (fr) * 1937-11-08 1938-11-30 Fritz Marti Dispositif de fixation élastique de palier.
FR1007329A (fr) * 1949-12-17 1952-05-05 Perfectionnement aux mécanismes d'horlogerie et mécanismes analogues
CH325895A (fr) * 1955-06-25 1957-11-30 Seitz & Co Palier pare-chocs
CH427657A (fr) * 1961-11-29 1966-09-15 Parechoc Sa Palier amortisseur de chocs pour mobile d'horlogerie
JPS42214Y1 (ja) * 1964-03-17 1967-01-09
US3306028A (en) * 1966-01-04 1967-02-28 Citizen Watch Co Ltd Shock-proof device for watches
CH493021A (fr) * 1967-09-11 1970-03-13 Portescap Le Porte Palier amortisseur de chocs pour pivot d'horlogerie
CH559384A (ja) * 1971-07-15 1975-02-28
CH615311B (fr) * 1976-11-22 Ebauches Bettlach Sa Palier amortisseur de chocs pour mouvement d'horlogerie.

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
JP4598701B2 (ja) 2010-12-15
US7234859B2 (en) 2007-06-26
US20060215499A1 (en) 2006-09-28
DE602005006731D1 (de) 2008-06-26
CN100578394C (zh) 2010-01-06
DE05405263T1 (de) 2007-05-03
CN1837993A (zh) 2006-09-27
JP2006267106A (ja) 2006-10-05
HK1092880A1 (en) 2007-02-16
EP1705537A1 (fr) 2006-09-27

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