EP3457221B1 - Oszillator einer uhr mit flexiblem zapfen - Google Patents

Oszillator einer uhr mit flexiblem zapfen Download PDF

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Publication number
EP3457221B1
EP3457221B1 EP18194710.2A EP18194710A EP3457221B1 EP 3457221 B1 EP3457221 B1 EP 3457221B1 EP 18194710 A EP18194710 A EP 18194710A EP 3457221 B1 EP3457221 B1 EP 3457221B1
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EP
European Patent Office
Prior art keywords
elastic strip
rigid
timepiece oscillator
rigid parts
parts
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
EP18194710.2A
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English (en)
French (fr)
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EP3457221A2 (de
EP3457221A3 (de
Inventor
Anthony Krüttli
David Chabloz
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.)
Patek Philippe SA Geneve
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Patek Philippe SA Geneve
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Publication date
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Publication of EP3457221A2 publication Critical patent/EP3457221A2/de
Publication of EP3457221A3 publication Critical patent/EP3457221A3/de
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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
    • G04B17/045—Oscillators acting by spring tension with oscillating blade 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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/02—Shock-damping bearings

Definitions

  • the present invention relates to a horological oscillator with a flexible pivot fulfilling the function of a balance-spring.
  • the document EN 1574359 describes a horological oscillator with a flexible pivot with separate crossed blades comprising a support, a rotary member and elastic blades embedded in the rotary member and fixed to the support by plates and screws.
  • the elastic blades extend in different planes and intersect without contact to define a virtual axis of rotation.
  • the present invention aims to provide a watch oscillator with a flexible pivot of the type with separated crossed blades which is relatively easy to manufacture and which can have a small footprint.
  • a watch component with a flexible pivot 1 comprises a central fixing part 2 and a mobile peripheral part 3, both of which are rigid.
  • the mobile peripheral part 3 surrounds the central fixing part 2.
  • the central fixing part 2 is used to mount the timepiece component 1 on a support 4 (shown schematically), which support can be fixed (for example the plate of a movement) or mobile.
  • the mobile peripheral part 3 is pivotable with respect to the central fixing part 2 and to the support 4 around a virtual axis of rotation 5 defined by an elastic member.
  • the watch component 1 is a rocker, more precisely a clutch rocker carrying a clutch wheel (not shown).
  • the clutch wheel pivots around an axis 6 which is parallel to the virtual axis of rotation 5 but distinct from the latter.
  • This clutch rocker is intended to be used, for example, in a chronograph mechanism.
  • the elastic member defining the virtual axis of rotation 5 comprises two elastic blades 7, 8 called “separate crosses”. These two blades 7, 8 intersect in two different planes parallel to the plane of component 1 (that is to say to the plane of the figure 1 ). Unlike so-called “non-separate crossed blade” systems, the two blades 7, 8 therefore do not physically intersect. This arrangement of the blades 7, 8 reduces the stiffness of the elastic member by a factor of 4 compared to systems with non-separate crossed blades.
  • the virtual axis of rotation 5 corresponds substantially to the straight line which is perpendicular to the plane of the component 1 and which crosses the two blades 7, 8. This virtual axis of rotation 5 is not completely fixed during the movements of the mobile peripheral part 3.
  • the mobile peripheral part 3 can pivot around the virtual axis of rotation 5 without friction and without play.
  • the height of the blades 7, 8 is large enough for the stiffness of the elastic member to be very high perpendicular to the plane of the component 1.
  • component 1 does not tilt under the effect of the weight of the clutch wheel. This is an advantage over conventional clutch rockers mounted around a physical axis. Due to play in the bearings of the physical shaft, these classic clutch levers have a tendency to tilt with respect to the horizontal, which can prevent the clutch wheel from performing its function correctly. meshing.
  • the watch component 1 comprises two monolithic parts 9, 10 assembled to one another.
  • the parts 9, 10 are flat and superimposed in the direction of the virtual axis of rotation 5.
  • the lower part 9 (cf. figures 4 to 6 ) comprises a central part 11 and a peripheral part 12 connected to each other by the elastic blade 7.
  • the central part 11 is lower than the peripheral part 12, or comprises a part which extends below the plane of the peripheral part 12, in order to be able to lean on the support 4 while leaving the peripheral part 12 without contact with this support 4.
  • the support 4 can comprise a raised part on which the central part 11 can lean of the lower part 9 to avoid contact between the peripheral part 12 and said support 4.
  • the upper part 10 (cf.
  • FIG. 7 to 9 comprises a central part 13 and a peripheral part 14 connected to each other by the elastic blade 8.
  • the central part 13 has a greater thickness than the peripheral part 14, or comprises a part which extends beyond below the plane of the peripheral part 14, in order to be able to engage in the central opening of the peripheral part 12 and against the central part 11 of the lower part 9.
  • the central part 11 and the peripheral part 12 of the lower part 9 have the same shape as the central part 13 and the peripheral part 14 of the upper part 10, respectively .
  • the lower and upper parts 9, 10 can thus be pressed against each other to form the component 1.
  • the lower part 9 however includes an extension 15 which forms a bearing receiving a stone 16 in which pivots a first pivot of the clutch wheel shaft. Alternatively, this extension 15 which receives the stone 16 could be part of the upper part 10.
  • the peripheral parts 12, 14 each define two lugs 17, 18 each pierced with a hole.
  • the hole of each ear 17 of the lower part 9 is aligned with the hole of the corresponding ear 18 of the upper part 10 but has a smaller diameter.
  • Tubes 19 are driven into the holes of the ears 17 of the lower part 9 and are received in the holes of the ears 18 of the upper part 10 so as to position and secure in rotation the two parts 9, 10 with respect to each other. the other.
  • Tubes 19 are tapped to allow a bridge to be screwed onto component 1, which bridge includes the bearing for the second pivot of the clutch wheel shaft.
  • the central part 11 of the lower part 9 is pierced with holes 20 which are aligned with corresponding holes 21 of the central part 13 of the upper part 10.
  • holes 20, 21 allow pins fixed to the support 4 to pass through the parts lower and upper 9, 10 to position the component 1 on the support 4.
  • Another hole 22 of the lower part 9 aligned with a hole 23 of the upper part 10 allows a screw to pass through the lower and upper parts 9, 10. This screw is screwed into support 4 and presses component 1 against said support 4.
  • the lower and upper parts 9, 10 are fixed to each other axially by being together fixed to the support 4.
  • the parts 9, 10 could be directly fixed to each other. , for example by gluing or welding, before being mounted on the support 4.
  • the lower and upper parts 9, 10 have their respective central parts 11, 13 which are integral to together form the central fixing part 2 of the component 1 and their peripheral parts 12, 14 which are integral to form together the peripheral part mobile 3 of component 1.
  • the empty space 24 between the central fixing part 2 and the mobile peripheral part 3 which surrounds it has a width l which allows a rotation of the mobile peripheral part 3 with respect to the central fixing part 2 within a certain range .
  • the mobile peripheral part 3 abuts against the central fixing part 2 to limit the deformation of the elastic blades 7, 8.
  • the width l is chosen to be sufficiently small so that the elastic limit of the blades 7, 8 cannot be exceeded.
  • the blades 7, 8 cannot deform plastically or break.
  • a stop could be provided fixed to the support 4 and against which the mobile peripheral part 3 could come to rest.
  • the lower and upper parts 9, 10 are typically made of metal, for example steel or titanium, or of a metal alloy such as a nickel-based alloy, and can be obtained by wire machining, for example. They can also be produced by electroforming, for example according to the LIGA technique, in suitable materials such as gold, nickel or a nickel-based alloy such as nickel-phosphorus.
  • the lower and upper parts 9, 10 can also be made of a fragile material such as silicon and obtained by an etching technique, for example of the DRIE type.
  • parts 9, 10 made of silicon they can be associated with metallic elements electroformed in the silicon or at its periphery, as described in the patent application EP 2145237 , or silicon bonded, as described in the patent application EP 2579104 .
  • the watch component may comprise two monolithic silicon parts each defining two rigid parts connected by an elastic blade, and the rigid parts or one of them can be linked to complementary rigid metal parts serving for example as fastening parts.
  • the timepiece component 1 is relatively easy to manufacture and can take up little space.
  • the above description could apply to watch components other than a clutch lever.
  • the present invention is an application of the above description to a horological oscillator serving as a time base (that is to say fulfilling the function of a balance-spring).
  • peripheral part 3 could be a fixing part used to mount the timepiece component on a support
  • central part 2 could be an active part, mobile relative to the support.
  • the number of separate crossed elastic strips 7, 8 can be greater than two.
  • the timepiece component 1 could comprise three, four or more superimposed monolithic parts of the type of parts 7, 11, 12 and 8, 13, 14, in particular to increase the stiffness, perpendicular to the plane of the component, of the elastic member defining the virtual axis of rotation 5.
  • the figure 10 shows an oscillator 25 intended to fulfill the function of a balance-spring, comprising four assembled monolithic parts 26, 27, 28, 29 together forming an inner fixing part 30, a mobile peripheral part 31 and two elastic members 32, 33 connecting the inner fixing part 30 and the mobile peripheral part 31.
  • the mobile peripheral part 31 has an annular shape and the inner fixing part 30 has the shape of an annular arc concentric with the mobile peripheral part 31.
  • the mobile peripheral part 31 plays the role of an oscillating inertial part (balance wheel) while the elastic members 32, 33 play the role of the hairspring.
  • the elastic members 32, 33 are superimposed and define an axis of rotation Z for the balance.
  • Each elastic member 32, 33 comprises two separate cross blades 32a, 32b, 33a, 33b which connect the fixing part 30 and the mobile peripheral part 31.
  • Spacers 34, 35 can separate the monolithic parts 26, 27 from the monolithic parts 28, 29.
  • this horological oscillator 25 has low rigidity in the direction of rotation Rz around the axis Z, but very high rigidity in the directions of rotation Rx, Ry around axes X, Y perpendicular to the Z axis, as well as very high rigidity in translation along the X, Y and Z axes.
  • oscillator 25 shows an oscillator 25' which differs from oscillator 25 in that the monolithic pieces 28, 29 have been interchanged to change the relative vertical position of the blades 33a, 33b.
  • the figure 12 shows a 25" oscillator which differs from oscillator 25 in that the monolithic parts 28, 29 have been turned by 180° with respect to the monolithic parts 26, 27, the 25" oscillator thus comprising two internal fixing parts 30a, 30b diametrically opposed and defined respectively by the monolithic parts 26, 27 and by the monolithic parts 28, 29.
  • the monolithic parts 28, 29 can also be turned relative to the monolithic parts 26, 27 by an angle different from 180° so that , at rest, the elastic blades 32a and 33a, respectively 32b and 33b, are not in the same vertical plane, unlike the examples of figures 10 to 12 where they are aligned.
  • the oscillator 25 can consist in changing the shape of the internal fixing part 30 and of the mobile peripheral part 31.
  • the internal fixing part 30 could be a central part like the central part 2 of the figures 1 to 3
  • the mobile peripheral part 31 could be an interrupted ring.
  • the present invention is not limited to monolithic parts each comprising a single elastic blade.
  • the figure 13 shows a watch component (oscillator) or part of a watch component, each part of which monolithic comprises two elastic blades 36, 37, respectively 38, 39, which are parallel (as shown) or non-parallel.
  • the figure 14 shows another timepiece component or part of a timepiece component, each monolithic part of which comprises two elastic blades 40, 41, 42, 43 respectively, which are parallel (as shown) or non-parallel.
  • the elastic blades of the different monolithic parts are not necessarily located in different planes, the main thing being that they intersect in a non-physical way, that is to say without contact.
  • the figures 15 to 17 show elastic blades of two respective monolithic parts crossing without contact while they are globally in the same plane.
  • the elastic blades 44, 45 are in the same plane but have notches 46, 47 to allow their crossing.
  • each elastic blade 48, 49 leaves its plane before the crossing of the blades 48, 49 then returns to its plane after the crossing.
  • each elastic blade 50, 51 changes plane before the blades cross.
  • many other configurations are possible in which at least part of each elastic strip is in the same plane as at least part of the other strip. This type of configuration has the advantage of making the component more compact.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Micromachines (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Claims (12)

  1. Uhr-Oszillator mit flexiblem Drehzapfen, der die Funktion einer Unruh-Spiralfeder erfüllt und Folgendes umfasst:
    - ein erstes monolithisches Teil (26), das einen ersten starren Abschnitt und einen zweiten starren Abschnitt definiert, die durch mindestens eine erste elastische Klinge (32a) verbunden sind, und
    - ein zweites monolithisches Teil (27), das einen dritten starren Abschnitt und einen vierten starren Abschnitt definiert, die durch mindestens eine zweite elastische Klinge (32b) verbunden sind,
    wobei das erste und das zweite monolithische Teil (26, 27) derart miteinander zusammengebaut sind, dass:
    - der erste und der dritte starre Abschnitt fest miteinander verbunden sind,
    - der zweite und der vierte starre Abschnitt fest miteinander verbunden sind, und
    - die mindestens eine erste elastische Klinge (32a) und die mindestens eine zweite elastische Klinge (32b) sich kontaktlos kreuzen und eine virtuelle Drehachse (Z) für den zweiten und den vierten starren Abschnitt in Bezug zu dem ersten und dem dritten starren Abschnitt definieren.
  2. Uhr-Oszillator nach Anspruch 1, dadurch gekennzeichnet, dass das erste und das zweite monolithische Teil (26, 27) flach und übereinanderliegend sind.
  3. Uhr-Oszillator nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der erste und der dritte starre Abschnitt einen mittleren oder inneren Abschnitt (30) des Uhr-Oszillators bilden, und dadurch, dass der zweite und der vierte starre Abschnitt einen peripheren Abschnitt (31) des Uhr-Oszillators bilden.
  4. Uhr-Oszillator nach Anspruch 3, dadurch gekennzeichnet, dass der periphere Abschnitt (31) den mittleren oder inneren Abschnitt (30) vollständig oder nahezu vollständig umgibt.
  5. Uhr-Oszillator nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der erste und der dritte starre Abschnitt einen Befestigungsabschnitt (30) des Uhr-Oszillators bilden, der dazu dient, den Uhr-Oszillator an einer Stütze (4) zu montieren.
  6. Uhr-Oszillator nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der erste starre Abschnitt sich zumindest teilweise außerhalb der Ebene des zweiten starren Abschnitts erstreckt, um seine Befestigung an einer Stütze (4) ohne Kontakt zwischen der Stütze (4) und dem zweiten und dem vierten Abschnitt zu ermöglichen.
  7. Uhr-Oszillator nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Baugruppe, die durch den zweiten und den vierten starren Abschnitt gebildet ist, gestaltet ist, um bei einer Drehung des zweiten und des vierten starren Abschnitts in Bezug zum ersten und dritten starren Abschnitt gegen die Baugruppe, die durch den ersten und den dritten starren Abschnitt gebildet ist, anzustoßen, um die Verformung der mindestens einen ersten elastischen Klinge und der mindestens einen zweiten elastischen Klinge zu begrenzen und zu verhindern, dass ihre Elastizitätsgrenze überschritten werden kann.
  8. Uhr-Oszillator nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass er mindestens ein Führungs- oder Befestigungselement umfasst, das fest mit dem zweiten und vierten starren Teil verbunden ist und dazu dient, ein zusätzliches Element zu führen oder zu befestigen.
  9. Uhr-Oszillator nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die mindestens eine erste elastische Klinge (32a) und die mindestens eine zweite elastische Klinge (32b) sich vollständig in unterschiedlichen Ebenen befinden, die im Wesentlichen senkrecht zur virtuellen Drehachse (Z) sind.
  10. Uhr-Oszillator nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass zumindest ein Abschnitt der mindestens einen ersten elastischen Klinge (44; 48; 50) sich in derselben, zur virtuellen Drehachse im Wesentlichen senkrechten Ebene wie zumindest ein Abschnitt der mindestens einen zweiten elastischen Klinge (45; 49; 51) befindet.
  11. Uhr-Oszillator nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass sie ein drittes monolithisches Teil (28) umfasst, das einen fünften und einen sechsten starren Abschnitt definiert, die fest mit dem ersten beziehungsweise dem zweiten starren Abschnitt verbunden sind und durch mindestens eine dritte elastische Klinge (33a) verbunden sind, wobei die mindestens eine dritte elastische Klinge (33a) mit der mindestens einen ersten elastischen Klinge (32a) und der mindestens einen zweiten elastischen Klinge (32b) die virtuelle Drehachse (Z) definiert.
  12. Uhr-Oszillator nach Anspruch 11, dadurch gekennzeichnet, dass sie ein viertes monolithisches Teil (29) umfasst, das einen siebten und einen achten starren Abschnitt definiert, die fest mit dem ersten beziehungsweise dem zweiten starren Abschnitt verbunden sind und durch mindestens eine vierte elastische Klinge (33b) verbunden sind, wobei die mindestens eine dritte elastische Klinge (33a) und die mindestens eine vierte elastische Klinge (33b) sich ohne Kontakt kreuzen und mit der mindestens einen ersten elastischen Klinge (32a) und der mindestens einen zweiten elastischen Klinge (32b) die virtuelle Drehachse (Z) definieren.
EP18194710.2A 2014-09-16 2015-05-13 Oszillator einer uhr mit flexiblem zapfen Active EP3457221B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14184944 2014-09-16
EP15167482.7A EP2998800B1 (de) 2014-09-16 2015-05-13 Uhrkomponente mit flexiblem zapfenlager

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP15167482.7A Division EP2998800B1 (de) 2014-09-16 2015-05-13 Uhrkomponente mit flexiblem zapfenlager
EP15167482.7A Division-Into EP2998800B1 (de) 2014-09-16 2015-05-13 Uhrkomponente mit flexiblem zapfenlager

Publications (3)

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EP3457221A2 EP3457221A2 (de) 2019-03-20
EP3457221A3 EP3457221A3 (de) 2019-04-03
EP3457221B1 true EP3457221B1 (de) 2022-08-10

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EP15167482.7A Active EP2998800B1 (de) 2014-09-16 2015-05-13 Uhrkomponente mit flexiblem zapfenlager

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HK (1) HK1220013A1 (de)

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CH713151B1 (fr) * 2016-11-23 2020-09-30 Swatch Group Res & Dev Ltd Lame flexible pour l'horlogerie, et procédé de fabrication.
WO2018109584A1 (fr) 2016-12-16 2018-06-21 Patek Philippe Sa Geneve Composant horloger a pivot flexible
EP3336613B1 (de) 2016-12-16 2020-03-11 Association Suisse pour la Recherche Horlogère Resonator für uhr, der zwei pendellager umfasst, die so angeordnet sind, dass sie auf derselben ebene schwingen können
EP3382470B1 (de) * 2017-03-29 2020-05-06 Patek Philippe SA Genève Oszillator einer uhr mit flexiblem zapfen
EP3410229B1 (de) * 2017-05-30 2021-07-14 Patek Philippe SA Genève Uhrkomponente mit flexiblem zapfen
CH713850A2 (fr) 2017-06-02 2018-12-14 Patek Philippe Sa Geneve Procédé de fabrication d'un composant mécanique à pivot flexible à lames croisées séparées.
EP3416001B1 (de) 2017-06-13 2022-04-13 Patek Philippe SA Genève Herstellungsverfahren eines oszillators mit flexiblem zapfen
CH713960B1 (fr) * 2017-07-07 2023-08-31 Eta Sa Mft Horlogere Suisse Elément sécable pour oscillateur d'horlogerie.
EP3438762A3 (de) * 2017-07-28 2019-03-13 The Swatch Group Research and Development Ltd Uhrwerkoszillator mit flexiblen führungen mit grosser winkelförmiger laufbahn
EP3435172B1 (de) * 2017-07-28 2021-11-24 The Swatch Group Research and Development Ltd Herstellungsverfahren eines flexiblen führungsmechanismus für mechanischen oszillator eines uhrwerks
CH714024A2 (fr) * 2017-07-28 2019-01-31 Swatch Group Res & Dev Ltd Oscillateur d'horlogerie à guidages flexibles à grande course angulaire.
EP3435171B1 (de) * 2017-07-28 2021-08-25 The Swatch Group Research and Development Ltd Uhrwerkoszillator mit flexiblen führungen mit grosser winkelförmiger laufbahn
US10895845B2 (en) * 2018-06-25 2021-01-19 The Swatch Group Research And Development Ltd Timepiece oscillator with flexure bearings having a long angular stroke
JP6843191B2 (ja) 2018-07-24 2021-03-17 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 長い角ストロークを有するフレクシャーベアリングを備えた計時器用発振器
US11454932B2 (en) 2018-07-24 2022-09-27 The Swatch Group Research And Development Ltd Method for making a flexure bearing mechanism for a mechanical timepiece oscillator
EP3936946A1 (de) 2020-07-10 2022-01-12 Patek Philippe SA Genève Oszillator einer uhr mit flexiblem zapfen
EP4137892A1 (de) * 2021-08-20 2023-02-22 Montres Breguet S.A. Blendenartige auslösevorrichtung, insbesondere für uhrwerke
EP4137893A1 (de) * 2021-08-20 2023-02-22 Montres Breguet S.A. Blendenartige auslösevorrichtung, insbesondere für uhrwerke
EP4286959A1 (de) 2022-06-02 2023-12-06 Patek Philippe SA Genève Oszillator einer uhr mit flexiblem zapfen

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Publication number Publication date
EP3457221A2 (de) 2019-03-20
HK1220013A1 (zh) 2017-04-21
EP2998800A2 (de) 2016-03-23
EP3457221A3 (de) 2019-04-03
EP2998800B1 (de) 2019-01-16
EP2998800A3 (de) 2016-08-03

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