EP2008160A1 - Coupled resonator for regulating system - Google Patents
Coupled resonator for regulating systemInfo
- Publication number
- EP2008160A1 EP2008160A1 EP07727747A EP07727747A EP2008160A1 EP 2008160 A1 EP2008160 A1 EP 2008160A1 EP 07727747 A EP07727747 A EP 07727747A EP 07727747 A EP07727747 A EP 07727747A EP 2008160 A1 EP2008160 A1 EP 2008160A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- resonator
- coupled resonator
- coupled
- tuning fork
- frequency
- 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
- 230000001105 regulatory effect Effects 0.000 title description 6
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000010453 quartz Substances 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 4
- 239000011521 glass Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 239000010703 silicon Substances 0.000 claims abstract description 4
- 230000008878 coupling Effects 0.000 claims description 18
- 238000010168 coupling process Methods 0.000 claims description 18
- 238000005859 coupling reaction Methods 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000035939 shock Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 241000287828 Gallus gallus Species 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C5/00—Electric or magnetic means for converting oscillatory to rotary motion in time-pieces, i.e. electric or magnetic escapements
-
- 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
- G04B17/066—Manufacture of the spiral spring
Definitions
- the present invention relates to a coupled resonator for a regulating system, that is to say an assembly formed of two resonators whose coupling makes it possible to stabilize a frequency and thus to make it more independent of external stresses.
- the invention will be more particularly illustrated by the regulating system of a clockwork mechanical movement for which isochronism is a quality factor.
- Patent GB 1,138,818 published in 1967 describes a coupling device in which the alternations of a first oscillator excite by shock a tuning fork, that is to say without direct mechanical connection.
- the newer regulating devices essentially rely on devices associating a mechanical regulator, such as a sprung balance, associated by an electromagnetic coupling with an electronic regulator, said coupling being essentially carried out by means of magnets arranged in the arms or in the balance serge.
- a mechanical regulator such as a sprung balance
- an electromagnetic coupling with an electronic regulator
- the present invention therefore aims to overcome the disadvantages of the aforementioned prior art by providing a coupled resonator of simpler and more reliable design.
- the invention relates to a coupled resonator comprising a first low-frequency resonator for example of the order of a few hertz and a second resonator at higher frequency, for example of the order of 100 Hz.
- the invention is characterized in that the first resonator and the second resonator comprise permanent mechanical coupling means, said coupling making it possible to stabilize the frequency in the event of external disturbances, for example in case of shocks.
- the two resonators can be manufactured separately from identical or different materials, and then mechanically assembled by any means known to those skilled in the art, such as bonding, riveting, welding or interlocking.
- Both resonators can also be made in one piece in a single material.
- the materials used must have a certain elastic constant and may, for example, be chosen from metals or alloys, or amorphous, monocrystalline or polycrystalline materials, such as glass, quartz and silicon or its derivatives.
- the invention will be more particularly illustrated by a coupled resonator formed by a hairspring and a tuning fork, such a resonator being able to be integrated into the regulating system of a timepiece, in particular a wristwatch capable of receiving shocks.
- FIG. 2 is a partial representation of a second embodiment
- FIG. 3 is a partial representation of a third embodiment
- FIG. 4 corresponds to a graph representing the eigenfrequencies of the coupled system
- FIG. 5 corresponds to a graph showing the influence of the coupling on the stabilization of the frequency.
- the hairspring 1 basically comprises a first resonator consisting of a hairspring 1 typically having a frequency of the order of a few hertz and a second resonator consisting of a tuning fork 2 typically having a frequency of the order of one kilohertz.
- the curve inside 3 of the hairspring 1 is fixed in a conventional manner on a ferrule 5 for securing to a balance shaft and the tuning fork 2 also includes two arms 4, 6 connected by a foot 8.
- foot 8 of the tuning fork 2 is fixed in known manner to a fixed part of the watch movement, such as the rooster.
- the hairspring 1 and the tuning fork 2 are mechanically connected permanently.
- the arm 6 of the tuning fork 2 is extended by the curve on the outside 7 of the hairspring 1.
- the two resonators are made in one piece, by known techniques that depend on the materials used. These materials are obviously materials having a certain elastic constant "k", such as metals and alloys, or amorphous materials, monocrystalline or polycrystalline, such as glass, quartz, silicon or its derivatives.
- This basic embodiment will further illustrate an example of how such coupling has a favorable effect on the stabilization of the frequency.
- the first resonator namely the hairspring 1
- the second resonator namely the tuning fork 2
- the arm 6 of the tuning fork 2 comprises a notch 10 in which the end of the curve outside the spiral 7 is engaged, possibly completing the mechanical connection by gluing.
- the foot 8 of the tuning fork 2 further comprises a constriction 12 for fixing to a fixed part of the watch movement, and which can influence the coupling constant "k c " between the two resonators.
- FIG. 3 represents other variants allowing a great freedom to adjust the coupling constant "k c " between the first and the second resonator and the natural frequency of the second resonator.
- the foot 8 may comprise material recesses which will make it possible to modify the coupling constant "k c ". They could also be performed on any other part of the tuning fork 2, especially on the free arm 4 to modify the mass "m” and therefore the natural frequency of the tuning fork. Conversely, according to an embodiment not shown, it would be possible to add mass at any point in the second resonator.
- FIG. 3 also shows another variant, which can be combined with the preceding variant, to modify the natural frequency of the first resonator.
- the free arm 4 comprises in fact a counterweight 16, movable on said arm 4 and can be immobilized at a determined location, for example by means of a clamping screw 18.
- the tuning fork 2 when the tuning fork 2 is made of quartz along crystallographic axes for obtaining a piezoelectric effect, electrodes may be provided on the arms 4, 6 to generate electrical energy. In the case of a wristwatch this energy may for example be used to illuminate the dial.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Electric Clocks (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07727747A EP2008160B1 (en) | 2006-04-07 | 2007-04-03 | Coupled resonator for regulating system |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06007397A EP1843227A1 (en) | 2006-04-07 | 2006-04-07 | Coupled resonator for control system |
PCT/EP2007/053276 WO2007115985A1 (en) | 2006-04-07 | 2007-04-03 | Coupled resonator for regulating system |
EP07727747A EP2008160B1 (en) | 2006-04-07 | 2007-04-03 | Coupled resonator for regulating system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2008160A1 true EP2008160A1 (en) | 2008-12-31 |
EP2008160B1 EP2008160B1 (en) | 2010-06-30 |
Family
ID=37692656
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06007397A Withdrawn EP1843227A1 (en) | 2006-04-07 | 2006-04-07 | Coupled resonator for control system |
EP07727747A Active EP2008160B1 (en) | 2006-04-07 | 2007-04-03 | Coupled resonator for regulating system |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06007397A Withdrawn EP1843227A1 (en) | 2006-04-07 | 2006-04-07 | Coupled resonator for control system |
Country Status (10)
Country | Link |
---|---|
US (1) | US7889028B2 (en) |
EP (2) | EP1843227A1 (en) |
JP (1) | JP4982556B2 (en) |
KR (1) | KR20080111523A (en) |
CN (1) | CN101416127B (en) |
AT (1) | ATE472756T1 (en) |
DE (1) | DE602007007462D1 (en) |
HK (1) | HK1131446A1 (en) |
TW (1) | TW200746628A (en) |
WO (1) | WO2007115985A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE602007013123D1 (en) * | 2007-11-28 | 2011-04-21 | Manuf Et Fabrique De Montres Et De Chronometres Ulysse Nardin Le Locle S A | MECHANICAL OSCILLATOR WITH AN OPTIMIZED THERMOELASTIC COEFFICIENT |
DE602008006057D1 (en) * | 2008-07-04 | 2011-05-19 | Swatch Group Res & Dev Ltd | Coupled resonators for clock |
CH701783B1 (en) | 2009-09-07 | 2015-01-30 | Manuf Et Fabrique De Montres Et Chronomètres Ulysse Nardin Le Locle S A | spiral spring watch movement. |
EP2397919B1 (en) | 2010-06-21 | 2017-11-08 | Montres Breguet SA | Manufacturing method for a hairspring assembly of a timepiece made of micro-machinable material or silicon |
CH705493B1 (en) * | 2011-09-15 | 2019-04-30 | Swatch Group Res & Dev Ltd | Timepiece with oscillators coupled in chronograph mode. |
EP2570870B1 (en) * | 2011-09-15 | 2016-04-06 | The Swatch Group Research and Development Ltd. | Timepiece with permanently coupled oscillators |
CH705679B1 (en) * | 2011-10-28 | 2017-01-31 | Swatch Group Res & Dev Ltd | A circuit for self-regulating the oscillation frequency of an oscillating mechanical system, and a device comprising the same. |
EP2908187B1 (en) * | 2014-02-17 | 2016-10-19 | The Swatch Group Research and Development Ltd. | Adjustment of a clock piece resonator by changing the active length of a hairspring |
EP2908188B1 (en) | 2014-02-17 | 2018-06-27 | The Swatch Group Research and Development Ltd. | Adjustment of a clock piece resonator by changing the rigidity of a resilient return means |
EP2908185B1 (en) * | 2014-02-17 | 2017-09-13 | The Swatch Group Research and Development Ltd. | Device for maintaining and adjusting a clock piece resonator |
EP2908186B1 (en) * | 2014-02-17 | 2018-11-21 | The Swatch Group Research and Development Ltd. | Frequency regulation of a clock resonator with movement of the hairspring |
EP2908184B1 (en) * | 2014-02-17 | 2017-10-18 | The Swatch Group Research and Development Ltd. | Method for maintaining and adjusting a clock piece resonator |
EP3081996B1 (en) * | 2015-04-16 | 2019-02-27 | Montres Breguet S.A. | Hairspring made of micro-machinable material with isochronism correction |
EP3118692B1 (en) * | 2015-07-16 | 2018-12-26 | Nivarox-FAR S.A. | Timepiece hairspring to hairspring-stud attachment by gluing |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE451035C (en) * | 1922-11-10 | 1927-10-22 | Heinrich Schieferstein | Elastic coupling between an engine, especially a clockwork, and a member regulating its sequence |
CH442153A (en) | 1965-08-13 | 1967-03-31 | Golay Bernard Sa | Clockwork movement |
CH443748A (en) * | 1965-08-13 | 1967-09-15 | Golay Bernard Sa | Oscillating device comprising a primary vibrating system and a secondary vibrating system |
CH680267A4 (en) * | 1967-05-13 | 1969-11-14 | Straumann Inst Ag | Component with a temperature coefficient only slightly deviating from zero for a timing device |
GB1366853A (en) * | 1970-09-14 | 1974-09-11 | Suwa Seikosha Kk | Timepiece |
CH1666770A4 (en) * | 1970-11-11 | 1972-12-15 | ||
CH597636B5 (en) | 1972-11-21 | 1978-04-14 | Ebauches Sa | |
US4069434A (en) * | 1974-12-27 | 1978-01-17 | Kabushiki Kaisha Suwa Seikosha | Quartz crystal oscillator |
CH615314GA3 (en) * | 1975-11-17 | 1980-01-31 | Runner assembly especially for clockwork movement | |
FR2477803A1 (en) * | 1980-03-04 | 1981-09-11 | Suwa Seikosha Kk | QUARTZ RESONATOR TYPE DIAPASON TYPE COUPLING |
CH686332B5 (en) | 1994-04-25 | 1996-09-13 | Asulab Sa | timepiece driven by a mechanical energy source and controlled by an electronic circuit. |
DE19509469C2 (en) * | 1995-03-16 | 1998-06-04 | Porsche Ag | Parking brake actuating device |
CH688879B5 (en) | 1995-08-10 | 1998-11-13 | Asulab Sa | Timepiece with indication of the power reserve. |
FR2748583B1 (en) | 1996-05-07 | 1998-06-26 | Asulab Sa | STABILIZATION OF AN ELECTRONIC CIRCUIT FOR REGULATING THE MECHANICAL MOVEMENT OF A WATCHMAKING PART |
FR2752070B1 (en) | 1996-08-01 | 1998-09-18 | Asulab Sa | ELECTRONIC WATCHMAKING PIECE COMPRISING A GENERATOR DRIVEN BY A SPRING BARREL |
EP0848306B1 (en) | 1996-12-10 | 2000-08-02 | Asulab S.A. | Time piece having an electric energy generator |
DE69839389T2 (en) | 1998-02-09 | 2009-05-07 | Asulab S.A. | Electronic movement, with a generator driven by a tension spring |
EP1521141B1 (en) | 2003-10-01 | 2007-05-30 | Asulab S.A. | Timepiece with a mechanical movement coupled to an electronic regulator mechanism |
EP1605323A3 (en) * | 2004-04-13 | 2006-07-12 | Coredem S.A. | Spiral spring for mechanical clockwork |
-
2006
- 2006-04-07 EP EP06007397A patent/EP1843227A1/en not_active Withdrawn
-
2007
- 2007-04-03 KR KR1020087027085A patent/KR20080111523A/en not_active Application Discontinuation
- 2007-04-03 WO PCT/EP2007/053276 patent/WO2007115985A1/en active Search and Examination
- 2007-04-03 CN CN2007800120730A patent/CN101416127B/en active Active
- 2007-04-03 EP EP07727747A patent/EP2008160B1/en active Active
- 2007-04-03 TW TW096111911A patent/TW200746628A/en unknown
- 2007-04-03 DE DE602007007462T patent/DE602007007462D1/en active Active
- 2007-04-03 JP JP2009504691A patent/JP4982556B2/en active Active
- 2007-04-03 AT AT07727747T patent/ATE472756T1/en not_active IP Right Cessation
- 2007-04-03 US US12/294,652 patent/US7889028B2/en active Active
-
2009
- 2009-10-15 HK HK09109548.9A patent/HK1131446A1/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2007115985A1 * |
Also Published As
Publication number | Publication date |
---|---|
HK1131446A1 (en) | 2010-01-22 |
JP4982556B2 (en) | 2012-07-25 |
EP2008160B1 (en) | 2010-06-30 |
ATE472756T1 (en) | 2010-07-15 |
WO2007115985A1 (en) | 2007-10-18 |
TW200746628A (en) | 2007-12-16 |
EP1843227A1 (en) | 2007-10-10 |
JP2009533917A (en) | 2009-09-17 |
DE602007007462D1 (en) | 2010-08-12 |
CN101416127A (en) | 2009-04-22 |
CN101416127B (en) | 2012-03-21 |
US20100283556A1 (en) | 2010-11-11 |
US7889028B2 (en) | 2011-02-15 |
KR20080111523A (en) | 2008-12-23 |
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