EP3208667A1 - Magnetisches hemmungsdrehteil eines uhrwerks - Google Patents

Magnetisches hemmungsdrehteil eines uhrwerks Download PDF

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Publication number
EP3208667A1
EP3208667A1 EP17150674.4A EP17150674A EP3208667A1 EP 3208667 A1 EP3208667 A1 EP 3208667A1 EP 17150674 A EP17150674 A EP 17150674A EP 3208667 A1 EP3208667 A1 EP 3208667A1
Authority
EP
European Patent Office
Prior art keywords
magnetic
mobile
escapement
track
exhaust
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.)
Pending
Application number
EP17150674.4A
Other languages
English (en)
French (fr)
Inventor
Gianni Di Domenico
Dominique Léchot
Jérôme Favre
Benoît LÉGERET
Davide Sarchi
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.)
Swatch Group Research and Development SA
Original Assignee
Swatch Group Research and Development SA
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 Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Publication of EP3208667A1 publication Critical patent/EP3208667A1/de
Pending legal-status Critical Current

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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
    • G04C5/005—Magnetic or electromagnetic means
    • 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
    • G04B15/06—Free escapements
    • G04B15/08—Lever 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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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

Definitions

  • the invention relates to an escapement mobile for a clockwork magnetic escapement mechanism, comprising at least one magnetized track, with a succession of tracks in a scrolling period according to which its magnetic characteristics are repeated, each said range comprising a ramp. magnetic field increasing followed by a magnetic field barrier increasing field and whose field gradient is greater than that of said ramp.
  • the invention also relates to a watchmaking magnetic escapement mechanism, comprising, subjected to a driving torque, such an escapement mobile cooperating indirectly with a spiral balance resonator via a stopper.
  • the invention also relates to a resonator mechanism, comprising a power source arranged to drive through a wheelwork said exhaust wheel of a said magnetic exhaust mechanism.
  • the invention also relates to a movement comprising at least one such resonator mechanism.
  • the invention also relates to a watch comprising at least one such movement.
  • the invention relates to the field of watchmaking time control mechanisms, and more particularly the field effect escapement, non-contact or attenuated contact, magnetic or electrostatic type.
  • the escape wheel interacts with the anchor using a mechanical contact force, which generates a significant friction and reduces the efficiency of the escapement.
  • the invention proposes to design a mobile exhaust geometry, including exhaust wheel, which allows to create a magnetic interaction potential consisting of ramps and barriers. This wheel geometry must be achievable with current technologies for manufacturing micro-magnets.
  • the invention relates to an escapement mobile for a magnetic watch exhaust mechanism, according to claim 1.
  • the invention also relates to a watchmaking magnetic escapement mechanism, comprising, subjected to a driving torque, such an escapement mobile cooperating indirectly with a spiral balance resonator via a stopper.
  • the invention also relates to a resonator mechanism, comprising a power source arranged to drive through a wheelwork said exhaust wheel of a said magnetic exhaust mechanism.
  • the invention also relates to a movement comprising at least one such resonator mechanism.
  • the invention also relates to a watch comprising at least one such movement.
  • the invention relates to an escapement mobile 1 for a magnetic escapement mechanism 100 of horology.
  • This mobile 1 has a surface S which is the largest surface of the mobile 1 or one of the largest surfaces of the mobile 1; for example when the mobile 1 is a disc, the surface S may be its upper face or its lower face.
  • This escapement mobile 1 comprises at least one magnetized track 10, with a succession of ranges according to a scroll period PD according to which its magnetic characteristics are repeated, each range comprising a magnetic ramp with increasing field followed by a magnetic field barrier field growing and whose field gradient is greater than that of the ramp that precedes it.
  • the magnetized track 10 comprises a magnetic layer 4 continuous and closed. More particularly, this magnetic strip is a magnetic layer 4 which is continuous and closed around the entire periphery of the escapement mobile 1
  • this magnetic strip is of constant thickness and of variable width.
  • the magnetic potential variations are generated by a variation of the thickness of the layer.
  • this magnetic track extends over a larger surface S of the escapement wheel 1, and whose projection geometry on this surface S defines the magnetic ramps and magnetic field barriers.
  • the magnetized track 10 comprises a physical layer composed of discrete elements, not necessarily composed with magnets of simple geometry, but for example with curvilinear pieces, which can also compose a functional mechanism according to the invention.
  • the magnetic field variations may be angular variations of the field, and that the variation of the field gradient between the ramp part and the barriers may also be a variation of the angular component of the field.
  • the escapement wheel 1 is an escape wheel, and comprises at least one hollow ring or disc or disc whose one face bears the magnetized track 10, and , in a particular and non-limiting way constitutes the largest surface area S of the mobile 1. And the width of the magnetic layer 4 extends in the radial direction relative to the axis A1 of this disk.
  • the magnetized track 10 comprises, connected on both sides of a boundary F, an inner track 11 and an outer track 12 comprising magnetic field barriers staggered with respect to the boundary F, alternating half a period.
  • this boundary F is a circle C, concentric with the two tracks 11 and 12.
  • the watchmaking magnetic escapement mechanism 100 comprises, subjected to a driving torque, such an escapement mobile 1 cooperating indirectly with a spiral balance resonator via a stopper 2, which is a pivoting magnetic stopper comprising at least one pole mass 20 arranged to cooperate alternately with the inner track 11 and the outer track 12 of such a magnetic layer 4.
  • the figure 1 illustrates the principle of a magnetic escape mechanism 100, comprising an escape wheel 1 with magnetized tracks 11, 11 internal and 12 external, separated by a circle C, cooperating with a polar mass 20 of a stopper, in particular a magnetic anchor 2, as described in the document EP13199427 cited above.
  • the magnetic interaction energy between the wheel 1 and the polar mass 20 of the anchor 2, in particular comprising at least one magnet, varies as indicated on the graph of the figure 2 showing the PD period on each of the two tracks.
  • the potential barriers 131, 132, indicated ++ on the Figures 1 and 2 have the effect of stopping the advance of the wheel 1.
  • the ramps of energy that extend, on each of the tracks 11 internal and 12 external, a region - - to a region +, and which are seen by the polar mass 20 of the anchor 2 during the rotation of the escape wheel 1, have the effect of accumulating the energy, which is transmitted to an ankle 30 of a rocker 3 during the tilting of the anchor 2.
  • the invention is here described in a particular, nonlimiting mode, which is that of a magnetic escapement. It can be implemented in an electrostatic mode, with reference to the document EP13199427 cited above.
  • a first known solution consists in varying the thickness, or the magnetization intensity, of magnets disposed on each of the tracks 11 and 12, to vary the interaction energy. with the polar mass 20 of the anchor 2.
  • the variation in thickness of magnets reported induces a variation of the air gap between the anchor 2 and the tracks 10, unless these magnets are embedded in the escape wheel 1, so as to have a surface of the same level face to the polar mass 20 of the anchor 2.
  • the development therefore requires to accumulate the control of the gradient of the field generated by the magnets of tracks 11 and 12, and the control of the interaction between the polar mass 20 and these magnets in the air gap, which is difficult because of the discontinuities.
  • Another alternative is to vary the magnetization intensity of the magnets, or the tracks themselves, which is difficult to master well.
  • the invention proposes a solution for industrial implementation easier than the variation of the thickness of the magnets or their magnetization intensity, which consists in using a magnetized layer 4 of constant thickness and magnetization, arranged in the plane of the wheel 1 in a particular surface distribution, and whose geometry is designed to produce the desired energy variations composed of ramps and barriers.
  • the figure 3 shows an example of such a geometry: a magnetized layer 4 is disposed on the escape wheel 1, and constitutes a magnetized track 10, which interacts repulsively with the polar mass 20 of the anchor 2 which is disposed
  • the geometry of the layer 4 is chosen so that the interaction with the polar mass 20 or the magnets of the anchor 2 produces the ramps and the barriers necessary for the proper operation of the escapement. magnetic anchor.
  • this magnetized track 10 formed by the magnetized layer 4 extends, partly at the inner track 11, and partly at the outer track 12, which correspond to the two extreme positions of the polar mass 20 of the anchor 2 (support against stars).
  • the inner track 11 has a radial width R1
  • the outer track 12 has a radial width R2.
  • R0 is the radius of the circle C which separates the inner track 11 and the outer track 12.
  • Figures 5 to 10 illustrate its representation in polar coordinates with respect to the axis of the escape wheel 1 in Figures 5, 7, and 9 , with the relative eccentricity of the surfaces as a function of the angle at the center relative to the period PD, and respectively the Figures 6, 8 and 10 illustrate the corresponding shapes of ramps and associated barriers.
  • the figure 5 represents two angular periods of the inner 11 and outer 12 tracks with a magnetic layer 4 which follows a periodic path alternately substantially symmetrical, in particular and not limited to triangular, to produce the potential ramps.
  • the variation of interaction energy with the polar mass 20 of the anchor 2 is represented in FIG. figure 6 in full line when the pole mass 20 is on the outer track 12 (position 1) and dashed line when the pole mass 20 is on the inner track 11 (position 2).
  • the interaction energy increases when the superposition of the magnetic track 4 of the wheel 1 and the polar mass 20 of the anchor 2 increases.
  • the profile of the periodic path may, again, be substantially sinusoidal, or otherwise, depending on the desired ramp profiles.
  • the linear profile of this example is advantageous for lowering the minimum maintenance torque CE for the operation of the exhaust.
  • figure 7 represents two angular periods of the inner 11 and outer 12 tracks with a magnetic layer 4 which is composed of discrete barrier pads 41, here constituted by rectangular zones, in order to produce the potential barriers.
  • the corresponding interaction energy variation is represented in the figure 8 in full line when the pole mass 20 is on the outer track 12 (position 1) and dashed line when the pole mass 20 is on the inner track 11 (position 2).
  • the figure 9 represents two angular periods of the inner 11 and outer 12 tracks with a magnetic layer 4 which is the sum of the ramps of the figure 5 and barriers of the figure 7 .
  • the corresponding interaction energy variation is represented in the figure 10 in full line when the pole mass 20 is on the outer track 12 (position 1) and dashed line when the pole mass 20 is on the inner track 11 (position 2).
  • discrete barrier pads 41 are here rectangular in shape for ease of modeling. They can also adopt other similar forms, as long as these forms remain compatible with the desired magnetic potential distribution.
  • the geometry of the magnetic layer 4 depends on that of the wheel 1.
  • R1 greater than R2
  • R1 and R2 are equal.
  • the magnetic layer 4 extends alternately on the inner track 11 and the outer track 12.
  • the magnetic layer 4 comprises, at each half-period, a barrier terminal 41 constituting a magnetic field barrier, extending on one side of the boundary F, and alternately on the inner track 11 and on the outer track 12.
  • barrier pads 41 are connected, one after the other, by a strip 40 of width less than the smallest width of the barrier pads 41.
  • the band 40 changes concavity on either side of each barrier stud 41, and remains on the same side of the boundary F between two successive gate pads 41.
  • the band 40 has a constriction 42 next to each barrier stud 41.
  • the band 40 has a cusp 46 between two successive barrier pads 41.
  • a wheel variant 1 comprising two magnetic layers 4, upper 4S and lower 4I, between which the polar mass 20 of the anchor 2 is sandwiched, as shown in the figure 11 .
  • the polar mass 20 of the anchor 2 acts in repulsion with the magnetized layers 4S and 4I of the wheel 1. It is naturally conceivable an escape wheel 1 with a number of levels even higher, and an anchor 2 with as many polar masses than spaces delimited two by two by the different magnetic layers 4 of the different levels to accumulate the effects, within the limit of the vertical space allowed by the movement in which is integrated the exhaust mechanism 100.
  • the escapement wheel 1 comprises a plurality of parallel disks whose faces facing one another each carry a magnetized track 10 symmetrical with respect to the other with respect to a median plane perpendicular to the common axis of the discs, and the width of each magnetic layer 4 extends in the radial direction relative to the axis of the disc.
  • the two end discs of this plurality of discs each comprise, on the opposite side to the plurality of discs, a ferromagnetic layer constituting a magnetic shield protecting the mobile from external magnetic fields.
  • the magnetic escapement mechanism 100 comprises such an escapement mobile 1, and the stopper 2 comprises at least one polar mass 20 in each air gap where the parallel disks whose faces facing each other each carry a magnetized track 10 .
  • the figure 12 illustrates an advantageous variant where the anchor 2 comprises two polar masses 201 and 202 arranged angularly to work alternately, in the extreme angular positions of the anchor 2, one with the inner race 11, the other with the outer race 12 so the efforts add up.
  • This configuration has many advantages. Firstly, the difference in torque due to the difference in radius between the inner race 11 and the outer race 12 is compensated since there is always one of the polar masses of the anchor 2 which is on the inner lane 11 while the other is on the outer lane 12. Next, the manufacturing irregularities of the wheel 1, from one angular period to another, are averaged since the polar masses of the anchor do not see the same defects. Finally, the couples transmitted at each alternation are doubled.
  • the magnetic potential ramp be as linear as possible.
  • small adjustments of the geometry of the magnetic layer 4 may be made.
  • These narrowing 42 of the magnetized track make it possible to optimize the linearity of the ramps of the magnetic interaction potential.
  • the realization is also important in a series production.
  • An advantageous method of producing the magnetic layer or layers 4 of the escape wheel 1 consists of using a substrate which provides the mechanical strength, and on which the magnetized layer 4, which is typically NdFeB or SmCo, is deposited.
  • the layer can be deposited by CVD or PVD type methods or by galvanic growth.
  • the desired geometry can be obtained by placing a removable mask on the substrate before depositing, a mask that can be removed later. It is also possible to deposit the layer uniformly on the substrate (CVD, PVD, or glued) and then etch the unwanted areas. In all these situations, the geometries presented so far are usable because the mechanical strength is provided by the substrate. We understand the interest of multi-level exhaust wheels in the case of this embodiment.
  • Another variant of production relates to the manufacture of the magnetic layer 4 by machining the desired geometry in a thin magnet plate, whether by traditional methods, laser cutting, electro-erosion or chemical etching, it is then advantageous to complete the magnetic layer 4 by stiffeners 44 extending in the central zone of the escape wheel 1, outside the surfaces swept by the anchor 2, to ensure the mechanical strength of the manufactured component .
  • stiffeners 44 extending in the central zone of the escape wheel 1, outside the surfaces swept by the anchor 2, to ensure the mechanical strength of the manufactured component .
  • FIG 14 shows that the area mechanical consolidation, which extends towards the axis A1 of the wheel 1, and essentially outside the inner race 11, comprises a central ring 43 connected by stiffening rays 44 to some of the barrier pads 41 of the layer 4.
  • the stiffening rays 44 are connected to the barrier pads 41 of the inner track 11 because it is the parts that are the least sensitive to a disturbing field.
  • the mechanical consolidation zone thus produced makes it possible to ensure the mechanical solidity without, however, significantly changing the magnetic interaction potential between the anchor 2 and the wheel 1.
  • FIG. 15 shows a similar arrangement to that of the figure 11 , where the wheel 1 comprises an outer ferromagnetic layer 5S external, and a lower ferromagnetic layer 5I external, each of them respectively carrying the upper magnetized layer 4S and lower 4I.
  • This arrangement makes it possible to better separate the magnetic fields external to the wheel 1 and whose effects on the exhaust are to be stopped, fields internal to the magnetic exhaust mechanism 100, which are necessary for the operation of the escapement.
  • the figure 20 shows a variant with mechanical stops 19 on the wheel 1 and complementary mechanical stops 29 on the anchor 2, to ensure that the system does not pick up in case of impact. These stops must be arranged to block the advance of the wheel 1 when the polar mass of the anchor passes through a magnetic barrier following an impact.
  • the anti-recess stops are of the magnetic type.
  • An advantageous variant thus comprises a small magnet on each point of the anti-recess star, and a ferromagnetic piece on the abutment of the anchor: in this case, during the first rebound, the magnetic attraction makes it possible to dissipate almost all the energy of the impact by stopping all bounces. The correct pulling position is then resumed thanks to the main magnetic potential (magnet wheel pallet).
  • the magnets located on each point of the star work in repulsion with magnets located on the anchor anti-release stops: in this case, any risk of collision (destroying the stops) is excluded, all leaving more freedom in the design of the magnetic wheel and in the indexing of the star.
  • the figure 21 shows the assembly of a resonator mechanism 200, comprising, from a power source comprising here a barrel 7, to the balance-spring resonator, with the balance 3 and the hairspring 6, a gear 8, and such Magnetic escapement mechanism 100 with magnetic anchor 2.
  • the teachings of the invention are applicable to a mobile of any shape, for example the variants of the document EP13199427 where the escape wheel is a cylinder, or a continuous band, in which case the magnetic layer profile 4 can be directly that of the figures 9 or 18 , or a left exhaust mobile, for example and not limited to fins at the ramps and / or potential barriers.
  • the invention also relates to a movement 300 comprising at least one such resonator mechanism 200.
  • the invention also relates to a watch 400 comprising at least one such movement 300.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Micromachines (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
EP17150674.4A 2016-02-18 2017-01-09 Magnetisches hemmungsdrehteil eines uhrwerks Pending EP3208667A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16156326 2016-02-18

Publications (1)

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EP3208667A1 true EP3208667A1 (de) 2017-08-23

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EP17150674.4A Pending EP3208667A1 (de) 2016-02-18 2017-01-09 Magnetisches hemmungsdrehteil eines uhrwerks

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US (1) US10095187B2 (de)
EP (1) EP3208667A1 (de)
JP (1) JP6285582B2 (de)
CN (1) CN107092179B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3579058A1 (de) 2018-06-07 2019-12-11 Montres Breguet S.A. Uhr, die ein tourbillon umfasst
EP3767397A1 (de) 2019-07-19 2021-01-20 The Swatch Group Research and Development Ltd Uhrwerk mit einem drehelement, das eine magnetisierte struktur mit periodischer konfigurierung besitzt
EP3839650A1 (de) * 2019-12-18 2021-06-23 ETA SA Manufacture Horlogère Suisse Herstellungsverfahren von mindestens zwei mechanischen teilen
EP3882711A1 (de) 2020-03-18 2021-09-22 The Swatch Group Research and Development Ltd Uhrwerk, das mit einer uhrhemmung mit einem magnetischen system ausgestattet ist
EP3882713A1 (de) 2020-03-18 2021-09-22 The Swatch Group Research and Development Ltd Uhrwerk, das mit einer uhrhemmung mit einem magnetischen system ausgestattet ist
US11649412B2 (en) 2019-12-18 2023-05-16 Eta Sa Manufacture Horlogère Suisse Method for manufacturing a mechanical timepiece part provided with a magnetic functional area
EP4386490A1 (de) 2022-12-13 2024-06-19 The Swatch Group Research and Development Ltd Uhrkomponente, die aus der verbindung zweier teile erzeugt wird, und verfahren zur herstellung der komponente

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3627242B1 (de) * 2018-09-19 2021-07-21 The Swatch Group Research and Development Ltd Optimierter magnetomechanischer uhrhemmungsmechanismus
EP3654110B1 (de) * 2018-11-19 2021-07-28 ETA SA Manufacture Horlogère Suisse Mechanische uhr mit animierter anzeige
US11133993B2 (en) 2019-02-28 2021-09-28 At&T Intellectual Property I, L.P. Augmented/mixed reality virtual venue pipeline optimization
EP3955063B1 (de) * 2020-08-12 2024-07-03 The Swatch Group Research and Development Ltd Uhrmechanismus mit magnetischem getrieberad
EP4141578A1 (de) * 2021-08-30 2023-03-01 The Swatch Group Research and Development Ltd Uhrwerksmechanismus mit einem magnetischen getrieberad

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GB671360A (en) 1948-07-28 1952-05-07 Smith & Sons Ltd S Magnetic escapements for timepieces
US3183426A (en) 1962-02-14 1965-05-11 Cons Electronics Ind Magnetically coupled constant speed system
FR2075383A5 (de) 1970-01-12 1971-10-08 Horstmann Magnetics Ltd
EP2887157A1 (de) 2013-12-23 2015-06-24 The Swatch Group Research and Development Ltd. Optimierte Uhrhemmung
EP2889701A2 (de) * 2013-12-23 2015-07-01 ETA SA Manufacture Horlogère Suisse Synchronisierungsmechanismus für Uhrwerk
EP2891930A2 (de) * 2013-12-23 2015-07-08 The Swatch Group Research and Development Ltd. Vorrichtung zur Regulierung der Winkelgeschwindigkeit einer Triebfeder in einem Uhrwerk, das einen magnetischen Hemmungsmechanismus umfasst

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JP2001272250A (ja) * 2000-03-24 2001-10-05 Seiko Precision Inc 磁化パターンを有する被検出体および磁気エンコーダ
JP4912595B2 (ja) * 2005-02-03 2012-04-11 三菱電機株式会社 位置検出装置
JP5389455B2 (ja) * 2008-02-21 2014-01-15 セイコーインスツル株式会社 摺動部品及び時計
EP2400352A1 (de) * 2010-06-22 2011-12-28 The Swatch Group Research and Development Ltd. Hemmungssystem einer Uhr
EP2781965B1 (de) * 2013-03-19 2017-11-15 Nivarox-FAR S.A. Kassette für Uhrwerksmechanismus
EP2887156B1 (de) * 2013-12-23 2018-03-07 The Swatch Group Research and Development Ltd. Einstellvorrichtung
CN105849650B (zh) * 2013-12-23 2018-09-21 尼瓦洛克斯-法尔股份有限公司 用于钟表的非接触式圆柱擒纵机构
EP2990885B1 (de) * 2013-12-23 2017-07-26 ETA SA Manufacture Horlogère Suisse Mechanisches Uhrwerk mit magnetischem Hemmungsmechanismus
WO2015097172A2 (fr) * 2013-12-23 2015-07-02 The Swatch Group Research And Development Ltd Dispositif regulateur de la vitesse angulaire d'un mobile dans un mouvement horloger comprenant un echappement magnetique
CH711402A2 (fr) * 2015-08-04 2017-02-15 Eta Sa Mft Horlogere Suisse Mécanisme régulateur d'horlogerie à bras rotatifs synchronisé magnétiquement.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB671360A (en) 1948-07-28 1952-05-07 Smith & Sons Ltd S Magnetic escapements for timepieces
US3183426A (en) 1962-02-14 1965-05-11 Cons Electronics Ind Magnetically coupled constant speed system
FR2075383A5 (de) 1970-01-12 1971-10-08 Horstmann Magnetics Ltd
EP2887157A1 (de) 2013-12-23 2015-06-24 The Swatch Group Research and Development Ltd. Optimierte Uhrhemmung
EP2889701A2 (de) * 2013-12-23 2015-07-01 ETA SA Manufacture Horlogère Suisse Synchronisierungsmechanismus für Uhrwerk
EP2891930A2 (de) * 2013-12-23 2015-07-08 The Swatch Group Research and Development Ltd. Vorrichtung zur Regulierung der Winkelgeschwindigkeit einer Triebfeder in einem Uhrwerk, das einen magnetischen Hemmungsmechanismus umfasst

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3579058A1 (de) 2018-06-07 2019-12-11 Montres Breguet S.A. Uhr, die ein tourbillon umfasst
EP3767397A1 (de) 2019-07-19 2021-01-20 The Swatch Group Research and Development Ltd Uhrwerk mit einem drehelement, das eine magnetisierte struktur mit periodischer konfigurierung besitzt
US11822294B2 (en) 2019-07-19 2023-11-21 The Swatch Group Research And Development Ltd Timepiece movement comprising a rotating element provided with a magnetized structure having a periodic configuration
EP3839650A1 (de) * 2019-12-18 2021-06-23 ETA SA Manufacture Horlogère Suisse Herstellungsverfahren von mindestens zwei mechanischen teilen
US11649412B2 (en) 2019-12-18 2023-05-16 Eta Sa Manufacture Horlogère Suisse Method for manufacturing a mechanical timepiece part provided with a magnetic functional area
US11662690B2 (en) 2019-12-18 2023-05-30 Eta Sa Manufacture Horlogère Suisse Method for manufacturing at least two mechanical parts
EP3882711A1 (de) 2020-03-18 2021-09-22 The Swatch Group Research and Development Ltd Uhrwerk, das mit einer uhrhemmung mit einem magnetischen system ausgestattet ist
EP3882713A1 (de) 2020-03-18 2021-09-22 The Swatch Group Research and Development Ltd Uhrwerk, das mit einer uhrhemmung mit einem magnetischen system ausgestattet ist
US11886146B2 (en) 2020-03-18 2024-01-30 The Swatch Group Research And Development Ltd Horological movement comprising an escapement equipped with a magnetic system
EP4386490A1 (de) 2022-12-13 2024-06-19 The Swatch Group Research and Development Ltd Uhrkomponente, die aus der verbindung zweier teile erzeugt wird, und verfahren zur herstellung der komponente

Also Published As

Publication number Publication date
CN107092179A (zh) 2017-08-25
US20170242403A1 (en) 2017-08-24
US10095187B2 (en) 2018-10-09
JP6285582B2 (ja) 2018-02-28
CN107092179B (zh) 2019-06-21
JP2017146300A (ja) 2017-08-24

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