EP3234701A1 - Oscillateur pour mouvement horloger - Google Patents
Oscillateur pour mouvement horlogerInfo
- Publication number
- EP3234701A1 EP3234701A1 EP15817822.8A EP15817822A EP3234701A1 EP 3234701 A1 EP3234701 A1 EP 3234701A1 EP 15817822 A EP15817822 A EP 15817822A EP 3234701 A1 EP3234701 A1 EP 3234701A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- balance
- oscillator
- bipolar magnet
- bipolar
- magnet
- 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
- 230000033001 locomotion Effects 0.000 title claims abstract description 43
- 238000013459 approach Methods 0.000 claims abstract description 4
- 230000000737 periodic effect Effects 0.000 claims abstract description 4
- 230000002459 sustained effect Effects 0.000 claims abstract description 3
- 230000010355 oscillation Effects 0.000 claims description 11
- 238000010276 construction Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- G04C3/04—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 balance
- G04C3/047—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 balance using other coupling means, e.g. electrostrictive, magnetostrictive
-
- 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
- G04B15/00—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
- G04B17/063—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
- G04B17/20—Compensation of mechanisms for stabilising frequency
- G04B17/22—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature
-
- 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
- G04B17/22—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature
- G04B17/222—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature with balances
-
- 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
- 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
- G04C5/005—Magnetic or electromagnetic means
Definitions
- the present invention relates to an oscillator, for watch movement, comprising a shaft intended to be mounted on a frame member of the watch movement to define the axis of rotation of a rocker comprising a hub integral with a suspended mass, angularly extended, carrying a first bipolar magnet, arranged at a distance from the shaft, whose magnetic poles are oriented substantially in a tangential direction with reference to the shaft, and capable, depending on the angular position of the balance, to be positioned within range of a magnetic field produced by at least one fixed bipolar magnet, integral with a support to be assembled to the frame of the watch movement, the fixed bipolar magnet being located on the path of the first bipolar magnet, such as it is defined by the pivoting of the balance, being arranged on the support in such a way that, when the first bipolar magnet approaches the bi magnet, polar polar, identical polarities are located opposite one another to give rise to a moment of restoring force acting on the balance.
- the embodiment of Figure 2 relates to a pendulum comprising an arm whose free end carries a magnet for cooperating with coils to maintain oscillations of the pendulum.
- the arm also carries an additional magnet, in its central part, intended to cooperate with a fixed magnet, of adjustable position with reference to the frame of the watch movement, in such a way that a fine adjustment of the natural frequency of the oscillations is made possible by changing the position of the fixed magnet with reference to the trajectory of the magnet carried by the pendulum arm.
- This document provides for the possibility of implementing a variant according to which this pendulum could theoretically oscillate sustainably without the presence of the coils and therefore without the electromagnetic interaction ensuring the maintenance oscillations of the pendulum in the embodiment shown.
- the present invention relates rather to the field of oscillators comprising a pendulum and intended to be implemented in a timepiece of portable type, such as pocket watches or wristwatches.
- the balance is generally associated with a spiral spring intended to give rise to alternating moments of return force to produce the oscillating movement.
- patent EP 1805565 B1 describes various embodiments of oscillators in which restoring forces are generated by one or more permanent magnets. More specifically, this document describes the construction of an oscillator comprising a pendulum or an anchor carrying at least one movable bipolar magnet associated with at least one fixed bipolar magnet, to generate restoring forces on the balance or on the anchor intended to act on an oscillating element and reproduce in particular the typical movement of a balance associated with a spiral spring, in the case of embodiments relating to rockers.
- Figure 1 1 shows an embodiment in which a small magnetic bar performs the function of a pendulum. This bar is arranged in a guide channel to perform a back and forth movement being pushed back on either side by the poles of a fixed permanent magnet.
- the mode of cooperation of the magnetized bar with an anchor situated in a plane adjacent to that of the movements of the magnet bar is not clearly specified and, overall, this embodiment seems to be more of a concept than a functional practical embodiment.
- the embodiment of Figure 15 provides that the anchor itself carries two small permanent magnets arranged to cooperate with two fixed magnets to generate restoring forces on the anchor. Such a construction is supposed to give rise to oscillations of the anchor, at high frequency, of which it is probably difficult to ensure a good level of isochronism.
- the achievements proposed in this document are out of step with conventional constructions and require significant changes to existing watchmaking calibres to incorporate them.
- a main object of the present invention is to provide a construction for producing an oscillator for a watch movement, as described above, having no spring-coil, and providing good chronometric results while having a simple structure robust and not sensitive to changes in ambient temperature or shocks.
- a further object of the present invention is to allow easy integration of the oscillator according to the invention into an existing watch caliber.
- the present invention relates more particularly to an oscillator of the type mentioned above, characterized in that the suspended mass of the balance carries a second bipolar magnet having an arrangement similar to that of the first bipolar magnet, in such a way that the first and second bipolar magnets are capable of alternately cooperating with the fixed bipolar magnet to give rise to respective opposite return force moments.
- the oscillator according to the invention comprises an air intake and an escape wheel intended to establish a kinematic connection between a source of energy of the watch movement and the balance, arranged in such a way that the balance is capable of have a sustained periodic oscillatory motion with amplitude greater than 90 degrees.
- the basic principle of the repulsion occurring between two magnets approached from one another, with identical polarities facing each other, can generate a restoring force adapted to the implementation of an oscillator for a watch movement.
- the fixed magnet directly fulfills the function mechanical stop eliminating any risk of runaway of the balance in case of impact.
- the rocker can be located substantially in a first plane, the fixed bipolar magnet being located in a second plane distinct from the first plane.
- the oscillator according to the present invention may comprise a balance bridge bearing a pivot mounting bearing of the balance shaft and which is assembled the support of the fixed magnet.
- the support can be assembled to the balance bridge in such a way that its position and / or its orientation are adjustable with reference to the balance bridge.
- the balance carries a peg arranged to cooperate with the anchor to maintain oscillations of the balance.
- the oscillator according to the present invention can be easily implemented in relation to an existing watch caliber, without requiring significant changes.
- first and second bipolar magnets have between them an angular difference of between 20 and 180 degrees.
- at least one of the first and second bipolar magnets is assembled to the balance so that it can be moved to adjust the value of the angular difference.
- the present invention also relates to a watch movement comprising an oscillator meeting the above characteristics, and a timepiece provided with such a watch movement.
- FIG. 1 represents a simplified perspective view of a watch movement comprising an oscillator according to a preferred embodiment of the invention
- Figure 2 shows a simplified and exploded perspective view of the watch movement of Figure 1.
- FIG. 1 represents a simplified perspective view of a watch movement comprising an oscillator 1 according to a preferred embodiment of the present invention
- FIG. 2 represents the watch movement of FIG. 1 in a similar view but exploded, to highlight some construction details.
- the watch movement may be an existing caliber that would be slightly modified to implant the oscillator according to the invention or, alternatively, it may be a new caliber developed specifically, without departing from the scope of the invention.
- the watch movement comprises a frame, in particular here a platen 2 machined in a conventional manner to support all or part of the moving movement.
- the board typically supports a power source, such as a spring housed in a barrel (not shown), for maintaining the oscillations of the oscillator 1 through a finishing train (not shown).
- the oscillator 1 comprises a rocker 4 of substantially conventional general shape, that is to say it comprises a hub 6 from which extends at least one arm 8 for connecting a serge 10 to the hub .
- the rocker 4 is secured to a shaft 12 by which it is pivotally mounted on the frame of the watch movement.
- a first end 14 of the shaft 12 is here pivoted in a first bearing formed in the plate 2, while the other end 16 of the shaft is pivoted in a second bearing formed on a bridge 18 of balance, himself assembled at platinum 2.
- the balance 4 carries at least one prennier bipolar magnet 20, arranged at a distance from the shaft 12. More specifically, the magnet 20 is here housed in an extension 21 formed in thicker on the serge 1 0 of the balance 4.
- the magnet 20 has a substantially tangential magnetic orientation with reference to the balance 4, that is, its first and second faces 22 and 24 have opposite polarities.
- the first face 22 may be associated with the north pole of the magnet 20 while the second face 24 may be associated with its south pole.
- the balance bridge 18 carries a support 26 arranged on the bridge so that its angular orientation relative to the latter can be adjusted for a purpose to be explained later.
- the support 26 carries a fixed bipolar magnet 28 arranged in such a manner that it is located near the serge 10 of the balance 4.
- the first bipolar magnet 20 is capable, depending on the angular position of the balance 4, to be positioned within range of the magnetic field produced by the fixed bipolar magnet 28.
- the arrangement of the support 26 on the bridge 1 8 pendulum is made in such a way that the fixed bipolar magnet 28 is located on the path of the first bipolar magnet 20, as defined by the pivoting of the balance 4.
- This trajectory has substantially the shape of a portion of torus adjacent to the serge 10 of the balance 4 and located in a plane parallel to the latter.
- the fixed bipolar magnet 28 is arranged on the support 26 in such a way that, when the first bipolar magnet 20 approaches it, identical polarities are located facing each other for give rise to a repulsive force. This arrangement makes it possible to generate restoring forces on the balance, when it pivots, intended to reproduce the typical movement of a balance associated with a spiral spring.
- extension 21 may, alternatively, be arranged radially on the serge 10 rather than in an axial direction, without departing from the scope of the invention.
- Such an alternative makes it possible to reduce the bulk of the balance in the direction of its thickness but increases its overall diameter.
- the shape and dimensions of the support 26 must of course be adapted to the implantation of the extension 21 on the balance 4 and the skilled person will not encounter any particular difficulty to adapt these elements according to his own needs.
- the oscillator 1 comprises a connecting device, intended to establish a kinematic connection between the energy source of the watch movement and the balance shaft 12, arranged in such a way that the balance is likely to have a periodic oscillating motion maintained.
- the watch movement typically comprises a finishing wheel ensuring the connection between the power source and the oscillator.
- the escape wheel 30 constantly receives a torque by its pinion (not visible), under the effect of the energy released by the energy source of the watch movement, always tending to rotate in the same direction of rotation predefined.
- the escape wheel cooperates conventionally with an anchor 32 pivoted on the frame of the watch movement.
- the anchor 32 typically has a fork 34 arranged to cooperate with the escape wheel 30 and a dart 36 arranged to cooperate with a plateau pin (not visible) integral with the rocker 4.
- the rocker 4 periodically actuates the anchor 32 to rotate it and release the escapement wheel 30, while the latter provides small impulses back to the anchor to maintain oscillations of the balance.
- Such mechanism is for example described in the book entitled "Theorie d'horlogerie", of C.-A. Reymondin et al., Edited by the Federation of Technical Schools (Switzerland), ISBN 2-940025-10-X "on page 178 ( Figures 8-30 and 8-31), the teaching of which is incorporated by reference into this disclosure.
- the rocker mounted gear change gear wheel at each change of direction of rotation of the balance to allow a transmission of energy to the balance all alternations.
- the balance 4 carries a second bipolar magnet 40 housed in a second extension 41 similar to the extension 21.
- the second magnet 40 then has the same orientation as the first magnet 20 so that the magnets 20 and 40 cooperate alternately with the fixed bipolar magnet 28 to give rise, each in turn, to a repulsive force for reversing the direction of rotation of the balance 4.
- the fact of providing two magnets on the balance makes it possible to adjust the amplitude of the oscillations of the balance, by modifying the angular difference between the two magnets.
- an angular difference of the order of 20 to 180 degrees can be provided so that the amplitude of the oscillations of the balance 4 is substantially between 180 and 340 degrees. Even more preferably, the angular difference can be between 40 and 160 degrees.
- the balance 4 here comprises a single arm 8 having a large angular extent to balance the balance from the point of view of the masses, in particular to balance the mass of the extensions 21 and 41.
- the balance 4 here comprises a single arm 8 having a large angular extent to balance the balance from the point of view of the masses, in particular to balance the mass of the extensions 21 and 41.
- other shapes and / or solutions may be retained to balance the balance, without departing from the scope of the present invention.
- the support 26 may comprise a base 50, provided with a hole 52 to ensure its assembly to the bridge 18, from which extend first and second arms 54, 56 intended to be positioned with an angular orientation adapted with reference to the rocker 4, itself oriented angularly with respect to the anchor 32 (in any case, the plate pin is positioned to present substantially symmetrical oscillations with reference to the line passing through the balance shaft and the axis of rotation of the anchor).
- the first arm 54 facilitates the gripping of the support 26 to change the angular orientation on the bridge 18, similar to conventional escape rackets.
- the second arm 56 has a housing, for the fixed bipolar magnet 28, disposed here perpendicularly to the main direction of the second arm 56 so that the fixed magnet 28 is finally oriented substantially tangentially with reference to the serge 10 balance 4.
- the fixed magnet 28 can be positioned precisely on the trajectory of the magnets carried by the balance, but it also allows to define a mechanical stop providing a safety against the runaway of the balance in the event of impact.
- bipolar magnets used for the implementation of the present invention can be made from magnets of standard type, commercially available, and the profession of the profession will not encounter any particular difficulty to choose magnets adapted to his needs.
- an oscillator for a watch movement comprising a balance bearing at least a first magnet associated with a fixed magnet. arranged on the trajectory of the magnet carried by the balance to generate a repulsion acting as a restoring force during the rotation of the balance, without departing from the scope of the present invention.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Electric Clocks (AREA)
- Electromechanical Clocks (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14199074.7A EP3035131A1 (fr) | 2014-12-18 | 2014-12-18 | Oscillateur pour mouvement horloger |
PCT/EP2015/080679 WO2016097384A1 (fr) | 2014-12-18 | 2015-12-18 | Oscillateur pour mouvement horloger |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3234701A1 true EP3234701A1 (fr) | 2017-10-25 |
EP3234701B1 EP3234701B1 (fr) | 2021-05-05 |
Family
ID=52133983
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14199074.7A Withdrawn EP3035131A1 (fr) | 2014-12-18 | 2014-12-18 | Oscillateur pour mouvement horloger |
EP15817822.8A Active EP3234701B1 (fr) | 2014-12-18 | 2015-12-18 | Oscillateur pour mouvement horloger |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14199074.7A Withdrawn EP3035131A1 (fr) | 2014-12-18 | 2014-12-18 | Oscillateur pour mouvement horloger |
Country Status (5)
Country | Link |
---|---|
US (1) | US10133240B2 (fr) |
EP (2) | EP3035131A1 (fr) |
JP (1) | JP6770518B2 (fr) |
CN (1) | CN107111277B (fr) |
WO (1) | WO2016097384A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6548240B1 (ja) * | 2018-06-29 | 2019-07-24 | セイコーインスツル株式会社 | ひげぜんまい、調速機、時計用ムーブメント及び時計 |
EP3719588B1 (fr) * | 2019-04-03 | 2021-11-03 | The Swatch Group Research and Development Ltd | Oscillateur horloger auto-réglable |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1332107A (fr) * | 1963-12-16 | |||
DE1789976U (de) * | 1957-10-25 | 1959-06-04 | Junghans Geb Ag | Uhr mit mitteln zur kompensation der temperaturbeeinflussung der gangreglerschwingungen, insbesondere elektromagnetisch angetriebene uhr. |
US3183426A (en) * | 1962-02-14 | 1965-05-11 | Cons Electronics Ind | Magnetically coupled constant speed system |
SU179233A1 (ru) | 1965-01-28 | 1966-02-03 | В. И. Бел евский , А. Г. Бабошко | Контактное устройство наручных электрическихчасов |
US3292438A (en) * | 1965-02-02 | 1966-12-20 | Abraham L Korr | Timing escapement mechanism |
CH1344468A4 (fr) * | 1968-09-06 | 1971-10-29 | ||
DE1916664A1 (de) | 1969-04-01 | 1970-10-08 | Baezold Karl | Magnetische Hemmung fuer Mess- und insbesondere Zeitmessgeraete |
CH1574569A4 (fr) * | 1969-10-22 | 1971-03-31 | ||
US3665699A (en) * | 1970-04-16 | 1972-05-30 | Centre Electron Horloger | Device for locking an electro-dynamically maintained balance/balance-spring |
BE790818A (fr) * | 1971-11-01 | 1973-02-15 | Timex Corp | Moyens de commande d'amplitude pour oscillateurs a balancier |
CH594201B5 (fr) | 1972-12-13 | 1977-12-30 | Ebauches Sa | |
CH592913B5 (fr) | 1974-12-13 | 1977-11-15 | Far Fab Assortiments Reunies | |
US4266291A (en) * | 1977-12-27 | 1981-05-05 | Iida Sankyo Co., Ltd. | Electromagnetic swing device |
FR2763404B1 (fr) | 1997-05-13 | 1999-09-17 | Marquet Philippe Perinet | Mecanisme d'horlogerie a entrainement rotatif et regulation de vitesse |
TW352882U (en) | 1997-06-13 | 1999-02-11 | Wan-Yin Lian | Back clip with sound-receiving function for cellular phone |
CN1388839A (zh) * | 2000-08-21 | 2003-01-01 | 西铁城时计株式会社 | 软质金属及其制造方法和装饰物品及其制造方法 |
WO2002050616A1 (fr) * | 2000-12-20 | 2002-06-27 | Seiko Instruments Inc. | Piece d'horlogerie mecanique a detecteur de position et detecteur de position |
TWI352882B (en) | 2004-10-26 | 2011-11-21 | Lvmh Swiss Mft Sa | Regulating organ for wristwatch and mechanical mov |
DE602005023633D1 (de) * | 2004-10-26 | 2010-10-28 | Tag Heuer Sa | Armbanduhr-regulierungsglied und mechanisches uhrwerk mit einem solchen regulierungsglied |
JP5253201B2 (ja) * | 2009-01-23 | 2013-07-31 | セイコーインスツル株式会社 | 軸受構造体及びこれを備えた時計 |
DE102009036308B4 (de) | 2009-08-06 | 2018-11-15 | Proxxon S.A. | Sägeblattklemme |
CH702187A2 (fr) * | 2009-11-02 | 2011-05-13 | Lvmh Swiss Mft Sa | Organe réglant pour montre bracelet, et pièce d'horlogerie comportant un tel organe réglant. |
CH704685B1 (fr) | 2011-03-23 | 2015-12-15 | Lvmh Swiss Mft Sa | Organe réglant magnétique pour montre mécanique. |
EP2990885B1 (fr) * | 2013-12-23 | 2017-07-26 | ETA SA Manufacture Horlogère Suisse | Mouvement horloger mécanique à échappement magnétique |
-
2014
- 2014-12-18 EP EP14199074.7A patent/EP3035131A1/fr not_active Withdrawn
-
2015
- 2015-12-18 CN CN201580067532.XA patent/CN107111277B/zh active Active
- 2015-12-18 EP EP15817822.8A patent/EP3234701B1/fr active Active
- 2015-12-18 JP JP2017532007A patent/JP6770518B2/ja active Active
- 2015-12-18 US US15/536,063 patent/US10133240B2/en active Active
- 2015-12-18 WO PCT/EP2015/080679 patent/WO2016097384A1/fr active Application Filing
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2016097384A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2017538124A (ja) | 2017-12-21 |
US10133240B2 (en) | 2018-11-20 |
EP3035131A1 (fr) | 2016-06-22 |
CN107111277A (zh) | 2017-08-29 |
CN107111277B (zh) | 2020-08-21 |
US20180004164A1 (en) | 2018-01-04 |
WO2016097384A1 (fr) | 2016-06-23 |
JP6770518B2 (ja) | 2020-10-14 |
EP3234701B1 (fr) | 2021-05-05 |
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