EP3572885A1 - Mechanischer oszillator eines isochronen uhrwerks in jeder position - Google Patents

Mechanischer oszillator eines isochronen uhrwerks in jeder position Download PDF

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Publication number
EP3572885A1
EP3572885A1 EP18174332.9A EP18174332A EP3572885A1 EP 3572885 A1 EP3572885 A1 EP 3572885A1 EP 18174332 A EP18174332 A EP 18174332A EP 3572885 A1 EP3572885 A1 EP 3572885A1
Authority
EP
European Patent Office
Prior art keywords
branch
oscillator
mechanical oscillator
compass
deformable
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
EP18174332.9A
Other languages
English (en)
French (fr)
Other versions
EP3572885B1 (de
Inventor
Pascal Winkler
Laurent Klinger
Jean-Luc Helfer
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 EP18174332.9A priority Critical patent/EP3572885B1/de
Priority to US16/386,308 priority patent/US10838364B2/en
Priority to JP2019091225A priority patent/JP6738461B2/ja
Priority to CN201910438641.8A priority patent/CN110531604B/zh
Publication of EP3572885A1 publication Critical patent/EP3572885A1/de
Application granted granted Critical
Publication of EP3572885B1 publication Critical patent/EP3572885B1/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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/10—Oscillators with torsion strips or springs acting in the same manner as torsion strips, e.g. weight oscillating in a horizontal plane
    • 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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
    • 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
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • 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
    • 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
    • G04B31/06—Manufacture or mounting processes
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
    • G04C3/101—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details
    • G04C3/102—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details of the mechanical oscillator or of the coil

Definitions

  • the invention relates to a mechanical clock oscillator, comprising at least one base arranged to be fixed to a plate or a bridge of a clockwork movement, and at least one inertial element arranged to oscillate about a pivot axis virtual fixed position relative to said at least one base or fixed position relative to said bases when said oscillator has several, in a pivot plane perpendicular to said virtual pivot axis, each said inertial element being suspended from at least one said base by a plurality of flexible links each comprising at least one resilient blade, and said flexible links together defining said virtual pivot axis.
  • the invention also relates to a watch movement, comprising at least one such mechanical oscillator, and comprising a plate or a bridge for fixing each said base, which comprises each said oscillator.
  • the invention also relates to a watch comprising at least one such watch movement, and / or comprising at least one such mechanical oscillator.
  • the invention relates to the field of high-precision timepieces, which are very insensitive to external physical parameters, comprising elastic leaf oscillators with a high quality factor, and which retain high isochronism qualities in all the positions of the wearer. .
  • the patent application EP3299905 on behalf of CSEM proposes a solution that allows to go to higher amplitudes, typically 30 °, which is a real progress.
  • the step is not yet independent of the orientation of the watch in the gravitational field, in particular in the positions X +, X-, Y +, Y-, in which the running characteristics as a function of the amplitude are similar to each other, but very far from the walk characteristic as a function of the amplitude, which corresponds to the horizontal position, perpendicular to the gravitational field, which characteristic is excellent.
  • the invention proposes to develop a mechanical oscillator with flexible connections capable of a high amplitude, and typically up to 25 ° at least, and which has in the vertical positions of the door operating characteristics as a function of the amplitude equivalent to that measured in horizontal position.
  • the invention relates to a mechanical clock oscillator according to claim 1.
  • the invention further relates to a watch movement according to claim 28.
  • the invention further relates to a watch according to claim 29.
  • the difficulty of the problem described above is to determine a geometry of the flexible links of the oscillator, which allows to obtain a solution that satisfies the two conditions of operation independent of the amplitude, and of walking independent of the orientation of the oscillator.
  • the watch in the field of gravity while having an amplitude for industrial exploitation, typically more than 25 °, and preferably from 30 ° to 40 ° or more.
  • the invention relates to a mechanical clock oscillator 100, which comprises at least one base 2 arranged to be fixed to a plate 3 or a bridge of a watch movement 200.
  • This oscillator 100 comprises at least one inertial element 4, which is arranged to oscillate about a virtual pivot axis D of fixed position with respect to this base 2 if it is unique, or with respect to these bases 2 when the oscillator 100 has several, in a pivot plane P perpendicular to the virtual pivot axis D.
  • Each inertial element 4 is suspended from at least one such base 2 by a plurality of flexible links 5 each comprising at least one resilient blade 6. And these flexible links 5 together define the virtual pivot axis D, in their particular geometrical arrangement, in projection on the pivot plane P of the inertial element 4.
  • the present invention attempts to avoid any configuration where the inertial mass of the oscillator, typically a pendulum, comprises rigid arms extending from the serge to an inner diameter of elastic blade support. 6
  • the invention favors the configuration where elastic blades 6 are fixed to the serge of the inertial element 4 on the one hand, and to the frame (platinum or bridge of the movement) of on the other hand, at a fixed base 2, their end being situated on the outside diameter, that is to say the farthest away from the virtual pivoting axis D defined by the flexible links 5.
  • the invention favors a crossing of the blades, of course in projection on the pivot plane P because these resilient blades 6 are arranged in different and parallel levels, at the pivot axis D.
  • this configuration according to the invention The invention requires a stack on more levels than the prior art, but can also accommodate reduced dimensions of blades, which does little alter the overall size, which is preferably inscribed in the bulk of the inertial element 4 himself.
  • At least one such flexible connection 5 comprises at least one deformable compass 7.
  • This term compass is chosen to describe in a simple way a component which is preferably monobloc, and which comprises, on either side of a compass top, deformable branches, which are attached to different components of the oscillator ; such a deformable compass is not articulated, it is in fact analogous to a dowsing rod.
  • the invention is illustrated with a single branch on each side of the compass crown, but it is quite possible to equip the deformable compass with a plurality of branches, at least on one side of its body. top, the number of branches on each side of the summit may be different.
  • this deformable compass 7 comprises such an elastic blade 6 forming a first leg 8, which is arranged to be, at a first outer end 82, fixed to such a base 2, or which integral with a said base 2, in particular in one-piece execution.
  • This first branch 8 is angularly movable, in projection on the pivot plane P, with respect to another elastic blade 6 which forms a second branch 9 of the deformable compass 7.
  • This second branch 9 is, at a second external end 94, arranged to be fixed to the inertial element 4, or is integral with the inertial element 4.
  • the first branch 8 and the second branch 9 of each deformable compass 7 are joined at a cusp 11, which defines a virtual vertex 10 of the deformable compass 7.
  • branches of this compass are deformed during the oscillation.
  • branches which are straight in the rest position of the oscillator take a shape substantially in a circular arc of variable radius during the oscillation, during which the top 10 of the deformable compass 7 is movable relative to the axis virtual pivoting D, which it is farthest in the rest position of the oscillator 100.
  • the projection on the pivot plane P of the virtual summit 10 is on a first side of the virtual pivot axis D, opposite to a second side where the first end 82 and the second end 94 project.
  • the geometrical field swept by the elastic blades 6 during the oscillation intersects the virtual pivot axis D.
  • the angle formed by the projection, on the pivot plane P, of the virtual vertex 10, the virtual pivot axis D, and the first end 82 and / or the second end 94 is between 160 ° and 200 °.
  • the first branch 8 and the second branch 9 are symmetrical, in projection on the pivot plane P, with respect to a straight line forming a compass axis D7 joining the virtual pivot axis D and the projection of the virtual vertex 10.
  • This projection of the virtual vertex 10 is located on a first side of the virtual pivot axis D, opposite to a second side where the first end 82 and the second end project. second end 94.
  • Each deformable compass 7 thus forms, during the operation of the oscillator 100, a vee whose branches are attached externally to the base and the inertial element, and whose tip (the vertex) is free .
  • the vee is closed, and the first leg 8 and the second leg 9 are superimposed.
  • the R / L ratio between, on the one hand, the eccentricity R of the vertex 10 with respect to the virtual pivot axis D, in projection on the pivot plane P, and on the other hand, the shortest length L between the vertex 10 and the first end 82 or the second end 94, in projection on the pivot plane P, is between 0.12 and 0.18, or between 0.47 and 0.53. More particularly, the lengths L between the vertex 10 and the first end 82 on the one hand, and the second end 94 on the other hand, in projection on the pivot plane P, are equal, as visible on FIG. figure 3 .
  • all the compass axes D7 of all the deformable compasses 7, which comprise the flexible links 5, are uniformly distributed angularly around the virtual pivot axis D.
  • At least one deformable compass 7 comprises 6 straight elastic blades. More particularly, all the elastic blades 6 are straight.
  • At least one deformable compass 7 comprises the first branch 8 in a first level P1 parallel to the pivot plane P, and the second branch 9 in a second level P2 parallel to the pivot plane P and distinct from the first P1 level. It is possible to arrange this oscillator with left blades, however the complexity and bulk are increased, without a benefit is clearly visible. More particularly, each deformable compass 7 comprises the first branch 8 in a first level P1 parallel to the pivot plane P, and said second branch 9 in a second level P2 parallel to the pivot plane P and distinct from the first level P1.
  • At least one deformable compass 7 comprises a first branch 8 and a second branch 9 whose projections on the pivot plane P, in the unstressed rest state of the oscillator 100, are superimposed on each other. More particularly, the projections of the first branch 8 and the second branch 9, on the pivot plane P, in the unstressed state of rest of the oscillator 100 are identical to each other.
  • At least one inertial element 4 extends, in the direction of the virtual pivot axis D, on either side of the set of flexible links 5 by which it is suspended from the base 2 or the bases 2, between an upper plane PS and a lower plane PI. More particularly, each inertial element 4 extends, in the direction of the virtual pivot axis D, on either side of the set of flexible connections 5 by which it is suspended from the base 2 or the bases 2.
  • At least one inertial element 4 has no axial bearing, and is devoid of a radial arm, with respect to the virtual pivot axis D, other than the flexible links 5 by which it is suspended from the base 2 or the bases. 2. More particularly, each inertial element 4 has no axial bearing, and is devoid of a radial arm, with respect to the virtual pivot axis D, other than the flexible links 5 by which it is suspended from the base 2 or at bases 2.
  • At least one deformable compass 7 comprises at least one intermediate weight, more rigid than the first leg 8 and the second leg 9, on the first leg 8 and / or on the second leg 9 and / or on the Cursing edge 11.
  • a masselotage at the level of the cusp 11 seems superfluous, the variant illustrated by the figures is limited to ensure the mechanical connection between the first branch 8 and the second branch 9
  • the oscillator 100 comprises, on the same level in the direction of the virtual pivot axis D, three identical flexible links 5 and 120 ° from each other.
  • the R / L ratio between, on the one hand, the eccentricity R of the vertex 10 with respect to the virtual pivot axis D, in projection on the pivot plane P, and on the other hand, the shortest length L between the vertex 10 and the first end 82 or the second end 94, in projection on the pivot plane P is between 0.12 and 0.18, or between 0.47 and 0.53.
  • FIG. 1 The figures illustrate various variants comprising three flexible links thus superimposed, arranged at 120 ° in projection on the plane P: upper compass 7A with first upper branch 8A and second upper branch 9A, intermediate compass 7B with first intermediate branch 8B and second intermediate branch 9B lower compass 7C with first lower leg 8C and second lower leg 9C.
  • the oscillator 100 comprises, on the same level in the direction of the virtual pivot axis D, an odd number of flexible connections 5, preferably identical, to facilitate the self-starting of the oscillator.
  • the dimensions suitable for such elastic blades 6 for oscillators of watches are: length from 0.50 to 4.00 mm, a height of 0.10 to 0.50 mm, a thickness of 10 to 40 micrometers, and R / L of between 0.10 and 0.20 or between 0.45 and 0.55, and more particularly between 0.12 and 0.18, or between 0.47 and 0.53.
  • the figure 4 illustrates a particular case where the useful lengths of the elastic blades 6 are different, the blade projections on the pivot plane P are identical only on a part, which has the vertex 10 of the compass, and extends from both sides other of the virtual pivot axis D defined by the flexible links 5. It is still possible to imagine non-symmetrical branches, for example of different thicknesses, of different shapes, or other.
  • the figure 9 illustrates another variant where the elastic blades that constitute the flexible links are not straight, but only symmetrical with respect to a compass axis passing through the compass apex and the virtual pivot axis, in projection on the plane of pivoting.
  • the blades could be in ground key, or other shape to develop their length, such as a spiral, or other.
  • Each said flexible connection 5 is feasible in silicon and / or silicon dioxide, or at least partially amorphous material, or DLC, or quartz, or similar materials.
  • the invention also relates to a watch movement 200, comprising at least one such mechanical oscillator 100, and comprising a plate 3 or a bridge for fixing each base 2, which each oscillator 100 comprises.
  • the invention also relates to a watch 300 comprising at least one watch movement 200, and / or comprising at least one such mechanical oscillator 100.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electric Clocks (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Micromachines (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP18174332.9A 2018-05-25 2018-05-25 Mechanischer oszillator eines isochronen uhrwerks in jeder position Active EP3572885B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18174332.9A EP3572885B1 (de) 2018-05-25 2018-05-25 Mechanischer oszillator eines isochronen uhrwerks in jeder position
US16/386,308 US10838364B2 (en) 2018-05-25 2019-04-17 Mechanical timepiece oscillator which is isochronous in all positions
JP2019091225A JP6738461B2 (ja) 2018-05-25 2019-05-14 すべての位置で等時である機械式計時器振動子
CN201910438641.8A CN110531604B (zh) 2018-05-25 2019-05-24 机械式钟表振荡器、钟表机芯以及手表

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18174332.9A EP3572885B1 (de) 2018-05-25 2018-05-25 Mechanischer oszillator eines isochronen uhrwerks in jeder position

Publications (2)

Publication Number Publication Date
EP3572885A1 true EP3572885A1 (de) 2019-11-27
EP3572885B1 EP3572885B1 (de) 2022-04-20

Family

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Application Number Title Priority Date Filing Date
EP18174332.9A Active EP3572885B1 (de) 2018-05-25 2018-05-25 Mechanischer oszillator eines isochronen uhrwerks in jeder position

Country Status (4)

Country Link
US (1) US10838364B2 (de)
EP (1) EP3572885B1 (de)
JP (1) JP6738461B2 (de)
CN (1) CN110531604B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3936946A1 (de) * 2020-07-10 2022-01-12 Patek Philippe SA Genève Oszillator einer uhr mit flexiblem zapfen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3277394A (en) * 1963-03-12 1966-10-04 United States Time Corp Temperature compensated electromechanical resonator
US3318087A (en) * 1964-07-10 1967-05-09 Movado And Manufacture Des Mon Torsion oscillator
EP2273323A2 (de) * 2009-07-10 2011-01-12 Manufacture et fabrique de montres et chronomètres Ulysse Nardin Le Locle SA Mechanischer Oszillator
EP2911012A1 (de) * 2014-02-20 2015-08-26 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Oszillator einer Uhr
EP3276431A1 (de) * 2016-07-27 2018-01-31 Cartier International AG Mechanischer oszillator für uhrwerk
EP3299905A1 (de) 2016-09-27 2018-03-28 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Mechanischer oszillator für ein uhrwerk

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0964319A1 (de) * 1998-06-08 1999-12-15 Manufacture des Montres Rolex S.A. Verfahren zur Übertragung von mechanischen Energieimpulsen von einer Antriebsquelle zu einem Schwingungsregler
CH707808B1 (fr) * 2013-03-19 2017-05-15 Nivarox Far Sa Cassette de mécanisme d'horlogerie.
CH709881A2 (fr) * 2014-07-14 2016-01-15 Nivarox Sa Guidage flexible horloger.
EP3054357A1 (de) * 2015-02-03 2016-08-10 ETA SA Manufacture Horlogère Suisse Oszillatormechanismus für Uhr
JP6895977B2 (ja) * 2015-09-29 2021-06-30 パテック フィリップ ソシエテ アノニム ジュネーブ 可撓性枢動機械構成要素及び可撓性枢動機械構成要素を備えた時計装置
EP3312682B1 (de) * 2016-10-18 2019-02-20 ETA SA Manufacture Horlogère Suisse Qualitativ hochwertiger resonator für mechanische armbanduhr
CH713137A2 (fr) * 2016-11-16 2018-05-31 Swatch Group Res & Dev Ltd Protection d'un mécanisme résonateur à lames contre les chocs axiaux.
EP3326963B1 (de) * 2016-11-23 2020-01-01 The Swatch Group Research and Development Ltd Flexibles blatt für uhrwerk und herstellungsverfahren

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3277394A (en) * 1963-03-12 1966-10-04 United States Time Corp Temperature compensated electromechanical resonator
US3318087A (en) * 1964-07-10 1967-05-09 Movado And Manufacture Des Mon Torsion oscillator
EP2273323A2 (de) * 2009-07-10 2011-01-12 Manufacture et fabrique de montres et chronomètres Ulysse Nardin Le Locle SA Mechanischer Oszillator
EP2911012A1 (de) * 2014-02-20 2015-08-26 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Oszillator einer Uhr
EP3276431A1 (de) * 2016-07-27 2018-01-31 Cartier International AG Mechanischer oszillator für uhrwerk
EP3299905A1 (de) 2016-09-27 2018-03-28 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Mechanischer oszillator für ein uhrwerk

Also Published As

Publication number Publication date
US10838364B2 (en) 2020-11-17
US20190361398A1 (en) 2019-11-28
JP6738461B2 (ja) 2020-08-12
JP2019203890A (ja) 2019-11-28
CN110531604B (zh) 2021-02-09
EP3572885B1 (de) 2022-04-20
CN110531604A (zh) 2019-12-03

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