EP3191897A2 - Mecanisme de synchronisation de deux oscillateurs d'horlogerie avec un rouage - Google Patents
Mecanisme de synchronisation de deux oscillateurs d'horlogerie avec un rouageInfo
- Publication number
- EP3191897A2 EP3191897A2 EP15730171.4A EP15730171A EP3191897A2 EP 3191897 A2 EP3191897 A2 EP 3191897A2 EP 15730171 A EP15730171 A EP 15730171A EP 3191897 A2 EP3191897 A2 EP 3191897A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- oscillator
- axis
- plane
- regulator mechanism
- flexible blade
- 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
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 55
- 230000000295 complement effect Effects 0.000 claims abstract description 18
- 230000033001 locomotion Effects 0.000 claims description 32
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 4
- 230000005294 ferromagnetic effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 230000010363 phase shift Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000007547 defect Effects 0.000 claims description 2
- 230000005291 magnetic effect Effects 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 description 5
- 230000003993 interaction Effects 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
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
- G04B17/06—Oscillators with hairsprings, e.g. balance
- G04B17/063—Balance construction
-
- 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
- G04B17/20—Compensation of mechanisms for stabilising frequency
- G04B17/26—Compensation of mechanisms for stabilising frequency for the effect of variations of the impulses
Definitions
- the invention relates to a watchmaking mechanism comprising a plate and, mounted movable, at least pivotally relative to said plate, an escape wheel which pivots about an exhaust axis and is arranged to receive a torque motor, via a gear train, and a first oscillator having a first rigid structure connected to said plate by first elastic return means.
- the invention relates to a watch movement comprising such a regulating mechanism.
- the invention relates to a timepiece comprising such a movement.
- the invention relates to the field of the regulation of mechanical timepieces, in particular mechanical watches.
- the Swiss lever escapement generally used has a fairly low efficiency (of the order of 35%).
- the main sources of loss of a Swiss anchor escapement are: the friction of the pallets of the anchor on the teeth;
- the invention proposes to create mechanisms that have a performance greater than the efficiency of the Swiss lever escapement.
- the invention consists of a system for synchronizing a wheel, particularly driven by a motor spring, with a resonator.
- the invention relates to a clock control mechanism according to claim 1.
- the invention relates to a watch movement comprising such a regulating mechanism.
- the invention relates to a timepiece comprising such a movement, characterized in that it is a watch.
- FIG. 1 is a diagrammatic plan view of a first variant of a regulating mechanism according to the invention, comprising two oscillators formed by balance-spring assemblies, one of which pivots on the other and cooperates with a escape wheel, in an instantaneous state during an oscillation of each of these pendulum-balance sets;
- FIG. 2 schematically and in plan view shows a second variant of a regulating mechanism according to the invention, comprising two sectorial rockers connected by crossed blade games, the first one to a plate, and the second one, which cooperates with an escape wheel, connected to the first beam, in an instantaneous state during an oscillation of each of these oscillators;
- FIG. 5 is a block diagram showing a timepiece comprising a watch equipped with a movement with a regulating mechanism according to the invention.
- the invention consists of a system for synchronizing a gear driven by a motor spring with a resonator.
- the invention relates more particularly to the regulation of mechanical movements.
- the principle of the invention is to equip a mechanical watch with a movement comprising at least two oscillators connected in series with each other, in particular stacked, synchronized with a gear by a mechanical cooperation between the last oscillator of the cascade and a component of the train, between guide means and complementary guide means, in particular a finger and a cam, or more particularly a finger and a grooved wheel.
- the invention is illustrated, without limitation, with only two oscillators mounted in cascade.
- This regulating mechanism 100 comprises a plate 1 and, mounted mobile, at least pivotally relative to this plate 1, an escape wheel 51 and a first oscillator 1 10.
- the escapement wheel 51 pivots about an exhaust axis D and is arranged to receive, via a train, a driving torque.
- this driving torque is provided by an energy storage means, such as a cylinder, of a movement 200 to which the regulating mechanism 100 is intended to be incorporated.
- the first oscillator 1 10 comprises a first rigid structure 310, which is connected to the plate 1 by first elastic return means 210.
- the regulator mechanism 100 further comprises at least one second oscillator 120.
- This second oscillator 120 comprises a second rigid structure 320, which is connected to the first rigid structure 310 of the first oscillator 1 10 by second elastic return means 220.
- These second elastic return means 220 are arranged to allow at least a pivoting movement of the second rigid structure 320 relative to the first rigid structure 310.
- this second structure 320 comprises guide means 42, which are arranged to cooperate with complementary guiding means 52 that includes the escape wheel 51.
- These guide means 42 and these complementary guide means 52 together form a means of transmission of motion, for synchronizing the first oscillator 1 10 and the second oscillator 120 with the wheelwork to which belongs the escape wheel 51.
- This means of transmitting motion can take different forms: groove-pin system, as illustrated in a non-limiting manner by the figures, crank-handle system, or other.
- the invention is described here with two oscillators connected in series. Naturally, it is also applicable to a cascade of oscillators connected in series with each other.
- the first oscillator 1 10 and the second oscillator 120 have equal eigenfrequencies.
- the first oscillator 1 10 and the second oscillator 120 have between them an angular phase shift substantially constant and close to 90 °.
- At least two resonators formed by the first oscillator 1 10 and the second oscillator 120, preferably of the same natural frequency, each having a degree of angular freedom, are stacked so that a particular point of the second resonator travels a distance.
- patatoid trajectory 53 closed around a fixed point, which is here the pivot 151 of the escape wheel 51, for the mechanisms illustrated in the figures. The more this trajectory 53 has a shape close to a circle, and the better is the synchronization.
- the trajectory 53 is more generally an ellipse whose eccentricity depends on the geometry of the mechanism, in particular at the level of the connection between the guide means 42 and the complementary guide means 52.
- the first oscillator 1 10 pivots about a first pivot axis 01, and oscillates in a plane parallel to the plate 1 on either side of a first plane axis A1
- the second oscillator 120 rotates around a second pivot axis 02 and oscillates in a plane parallel to the plate 1 about a second plane axis A2
- the first plane axis A1 and the second plane axis A2 make an angle of between 60 ° and 120 ° with each other.
- this angle is between 80 ° and 100 °. In a particular embodiment, it is 90 °.
- the most downstream oscillator here the second oscillator 120
- the second oscillator 120 has, at a particular point, an interaction means, such as a pin, constituting the guide means 42 for cooperating with each other. with the escape wheel 51.
- the oscillations of the two resonators, first oscillator 1 10 and second oscillator 120, are maintained by the escape wheel 51 which also has an interaction means, such as a cam or a groove, and in particular a radial groove, constituting the complementary guide means 52.
- the escape wheel 51 is subjected to a motor torque. Its speed is synchronized by the frequency of the two resonators.
- the movement of each oscillator of the regulator mechanism 100 is preferably plane.
- the mobility plans of the different oscillators constituting the regulator mechanism 100 can be confused, or parallel to each other.
- the regulating mechanism 100 comprises first plane guide means, which are arranged to allow at least a pivoting movement of the first structure 310 with respect to a point of the plate 1, in a plane P parallel to that platinum 1.
- the regulating mechanism 100 comprises second plane guide means, which are arranged to allow at least a pivoting movement of the second structure 320 with respect to the first structure 310 in the plane P or in a plane parallel to said plane P .
- the second rigid structure 320 is pivotally mounted on the first rigid structure 310.
- FIG. 1 illustrates a first variant, in which two conventionally pivoted swivel balances, stacked one on the other, are synchronized with a gear train via a groove-pin interaction. This produces a mechanical watch 300 provided with two stacked rockers, synchronized by a grooved wheel.
- the first oscillator 1 10 comprises a first balance-spring assembly 11.
- This first balance spring 1 1 comprises a first balance 31, constituting the first rigid structure 310, and a first hairspring 21, which constitutes the first elastic return means 210, and whose outer turn is fixed to the plate 1 at a first pin 61, and which pivots around a first pivot axis 01.
- the first rocker 31 comprises a first pivot 41, eccentric with respect to the first pivot axis 01.
- This first pivot 41 defines a second pivot axis 02 about which pivots a second balance-spiral assembly 12, which constitutes the second oscillator 120.
- This second balance spring-spiral assembly 12 comprises a second balance 32, which constitutes the second rigid structure 320, and a second balance spring 22, which constitutes the second elastic return means 220, and whose outer turn is fixed to the first balance 31 at the a second stud 62. And this second rocker 32 constitutes the second structure 320 comprising the guide means 42.
- Figure 2 illustrates a second variant, in which two cross-beam rockers, cascading with each other, are synchronized with a gear via a groove-pin interaction.
- a first beam constituted here and without limitation of two circular sectors end to end, is the first rigid structure 310.
- a second beam constituted here and in a non-limiting manner of a circular sector, constitutes the second rigid structure 320. More particularly, this first rocker 310 and this second rocker 320 are coplanar.
- the first elastic return means 210 comprise at least a first flexible blade 210A and a second flexible blade 210B, which are crossed with each other, and which together constitute the first guide means plan arranged to allow at least a pivoting movement of the first structure 310 relative to a portion 101 of the plate 1 in a plane P parallel to that of the plate 1.
- This part 101 of the plate 1 may be an insert, or a part of the plate 1.
- the first flexible blade 210A is attached to the portion 101 of the plate 1 at a point 21 1, and the first rocker 310 at a point 214, and the second flexible blade 210B is attached to the portion 101 of the plate 1 at a point 212, and the first beam 310 at a point 213.
- the first flexible blade 21 OA and the second flexible blade 21 OB are distant from each other and arranged in two distinct planes parallel to the plate 1.
- the second elastic return means 220 similarly comprise at least a third flexible blade 220A and a fourth flexible blade 220B crossed with each other and together constitute the second plane guide means arranged to allow at least one movement. pivoting the second structure 320 relative to the first structure 310 in a plane P parallel to that of the plate 1, and to provide an elastic return function.
- the third flexible blade 220A is fixed to the first rocker 310 at a point 312, and the second rocker 320 at a point 313, and the fourth flexible blade 220B is fixed to the first rocker 310 at a point 31 1, and the second rocker 320 in a point 314.
- the third flexible blade 220A and the fourth flexible blade 220B are spaced from each other and arranged in two distinct planes parallel to the plate 1.
- the portion 101 of the plate 1, the first flexible blade 210A and the second flexible blade 210B, the first rocker 310, the third flexible blade 220A and the fourth flexible blade 220B, the second rocker 320 form a set monoblock of micro-machinable material such as silicon or the like.
- the entire plate 1, the first flexible blade 210A and the second flexible blade 210B, the first rocker 310, the third flexible blade 220A and the fourth flexible blade 220B, the second rocker 320 form a monobloc assembly in micro-machinable material such as silicon or the like.
- the guide means 42 and the complementary guide means 52 may take different forms.
- the guide means 42 comprise a finger, which is carried by the second rigid structure 320, and which is arranged to cooperate with two opposite surfaces of a cam constituting the complementary guide means 52 , and that includes the escape wheel 51.
- This cam is eccentric with respect to the exhaust axis D, and the path 53 of the finger surrounds the exhaust axis D.
- this cam is a groove with parallel faces that includes the escape wheel 51.
- the portion 101 of the plate 1, the first flexible blade 210A and the second flexible blade 210B, the first rocker 310, the third flexible blade 220A and the fourth flexible blade 220B, the second balance 320 , and the finger 42 form a one-piece assembly of micro-machinable material such as silicon or the like.
- the cam is a groove that is substantially radial, or strictly radial in the case of the figures, of the escape wheel 51.
- the cam groove has a radial first inner portion with respect to the exhaust axis D, which is tangential to a second curve portion of constant concavity or decreasing away from the exhaust axis D so to compensate for isochronism defects.
- the finger is a pin which is arranged to cooperate at minimum clearance with the groove, the motion transmission means thus being a groove-pin system.
- the guide means 42 comprise a bearing finger of an inner race of a ball bearing.
- the outer race of this bearing is advantageously mounted in a frictionally rubbing slider in a radial groove of the escape wheel. This rubbing slider makes it possible to promote a phase shift of 90 ° between the two resonators and thus to prevent the trajectory from collapsing on a line.
- the first oscillator 1 10 pivots about a first pivot axis 01 and oscillates in a plane parallel to the plate 1 on either side of a first plane axis A1
- the second oscillator 120 pivots around of a second pivot axis 02 and oscillates in a plane parallel to the plate 1 about a second plane axis A2
- the first pivot axis 01, the second pivot axis 02, and the finger together define an angle ⁇ between 60 ° and 120 °.
- this angle ⁇ is between 80 0 and 100 °.
- the cooperation between the guide means 42 and the complementary guide means 52 is magnetic and / or electrostatic.
- the guide means 42 comprise at least one magnet or a ferromagnetic track arranged to cooperate with at least one magnet or one magnet.
- ferromagnetic track that comprises the complementary guide means 52.
- the guide means 42 comprise at least one electrified or electrostatically conductive track, arranged to cooperate with at least one electrified or electrically conductive track that comprises the means of supplementary guidance 52.
- the invention also relates to a watch movement 200 comprising such a regulating mechanism 100.
- the invention also relates to a timepiece 300 comprising such a movement 200, and in particular this timepiece 300 is a watch.
- the invention avoids the jerky movements characteristic of a Swiss lever escapement and, consequently, the losses due to shocks; the invention proposes an innovation in the field of the exhaust while respecting the classic watchmaking codes, by the maintenance of balance springs; for the first variant, all the horological know-how can be used to use isochronous resonators.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Micromachines (AREA)
- Transmission Devices (AREA)
- Electromechanical Clocks (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14184155.1A EP2908189A3 (fr) | 2014-02-17 | 2014-09-09 | Mécanisme de synchronisation de deux oscillateurs d'horlogerie avec un rouage |
PCT/EP2015/063892 WO2016037717A2 (fr) | 2014-09-09 | 2015-06-22 | Mecanisme de synchronisation de deux oscillateurs d'horlogerie avec un rouage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3191897A2 true EP3191897A2 (fr) | 2017-07-19 |
EP3191897B1 EP3191897B1 (fr) | 2019-01-02 |
Family
ID=51492265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15730171.4A Active EP3191897B1 (fr) | 2014-09-09 | 2015-06-22 | Mecanisme de synchronisation de deux oscillateurs d'horlogerie avec un rouage |
Country Status (4)
Country | Link |
---|---|
US (1) | US9958832B2 (fr) |
EP (1) | EP3191897B1 (fr) |
CN (1) | CN106537264B (fr) |
WO (1) | WO2016037717A2 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3182216B1 (fr) * | 2015-12-18 | 2019-08-28 | Montres Breguet S.A. | Oscillateurs couplés d'horlogerie |
CH713056A2 (fr) * | 2016-10-18 | 2018-04-30 | Eta Sa Mft Horlogere Suisse | Mouvement mécanique d'horlogerie avec résonateur à deux degrés de liberté avec mécanisme d'entretien par galet roulant sur une piste. |
FR3071075B1 (fr) * | 2017-09-14 | 2019-09-20 | Lvmh Swiss Manufactures Sa | Dispositif pour piece d'horlogerie, mouvement horloger et piece d'horlogerie comprenant un tel dispositif |
EP3926412A1 (fr) * | 2020-06-16 | 2021-12-22 | Montres Breguet S.A. | Mécanisme régulateur d'horlogerie |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1232285A (en) * | 1916-10-19 | 1917-07-03 | John H Greeley | Escapement for clocks and watches. |
DE602008006057D1 (de) * | 2008-07-04 | 2011-05-19 | Swatch Group Res & Dev Ltd | Gekoppelte Resonatoren für Uhr |
EP2151722B8 (fr) * | 2008-07-29 | 2021-03-31 | Rolex Sa | Spiral pour résonateur balancier-spiral |
HK1146455A2 (en) * | 2010-03-12 | 2011-06-03 | Microtechne Res & Dev Ct Ltd | An oscillator system |
EP2431823A1 (fr) * | 2010-09-16 | 2012-03-21 | Blancpain S.A. | Echappement blancpain à ancre amélioré pour mouvement d'horlogerie |
CH708658A1 (fr) * | 2013-10-03 | 2015-04-15 | Gfpi S A | Mouvement d'horlogerie comprenant un engrenage différentiel entre organes réglants. |
EP2874023A1 (fr) * | 2013-11-13 | 2015-05-20 | ETA SA Manufacture Horlogère Suisse | Pièce d'horlogerie comportant un découplage entre les moyens de transmission d'énergie et les moyens du comptage |
EP2908189A3 (fr) * | 2014-02-17 | 2016-06-01 | ETA SA Manufacture Horlogère Suisse | Mécanisme de synchronisation de deux oscillateurs d'horlogerie avec un rouage |
CH710692B1 (fr) * | 2015-02-03 | 2021-09-15 | Eta Sa Mft Horlogere Suisse | Mécanisme oscillateur d'horlogerie. |
-
2015
- 2015-06-22 US US15/308,508 patent/US9958832B2/en active Active
- 2015-06-22 CN CN201580033896.6A patent/CN106537264B/zh active Active
- 2015-06-22 EP EP15730171.4A patent/EP3191897B1/fr active Active
- 2015-06-22 WO PCT/EP2015/063892 patent/WO2016037717A2/fr active Application Filing
Also Published As
Publication number | Publication date |
---|---|
US9958832B2 (en) | 2018-05-01 |
WO2016037717A3 (fr) | 2016-05-19 |
WO2016037717A4 (fr) | 2016-07-07 |
WO2016037717A2 (fr) | 2016-03-17 |
CN106537264A (zh) | 2017-03-22 |
US20170068216A1 (en) | 2017-03-09 |
EP3191897B1 (fr) | 2019-01-02 |
CN106537264B (zh) | 2019-03-15 |
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