EP3771947A1 - Führungsvorrichtung zum schwenken und resonatormechanismus eines uhrwerks für eine schwenkbare masse - Google Patents

Führungsvorrichtung zum schwenken und resonatormechanismus eines uhrwerks für eine schwenkbare masse Download PDF

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Publication number
EP3771947A1
EP3771947A1 EP19188844.5A EP19188844A EP3771947A1 EP 3771947 A1 EP3771947 A1 EP 3771947A1 EP 19188844 A EP19188844 A EP 19188844A EP 3771947 A1 EP3771947 A1 EP 3771947A1
Authority
EP
European Patent Office
Prior art keywords
blade
flexible
length
pivoting
fixed
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
EP19188844.5A
Other languages
English (en)
French (fr)
Inventor
M. Jean-Luc HELFER
M. Pascal WINKLER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP19188844.5A priority Critical patent/EP3771947A1/de
Priority to US16/908,978 priority patent/US11573532B2/en
Priority to JP2020120370A priority patent/JP7034216B2/ja
Priority to CN202010755490.1A priority patent/CN112305889B/zh
Publication of EP3771947A1 publication Critical patent/EP3771947A1/de
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • 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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton

Definitions

  • the invention relates to a pivoting guide device for a pivoting mass.
  • the invention also relates to a clockwork resonator mechanism comprising at least two pivoting guide devices.
  • the invention also relates to a timepiece movement comprising such a resonator mechanism.
  • the invention seeks to avoid the aforementioned defects and aims to improve the behavior of flexible pivots, in particular for their use in a resonator mechanism.
  • the invention thus relates to a device for guiding a rotating pivoting mass about a virtual pivot axis, the device comprising a first support and a second support, one of which is fixed and the other is intended to be rotary. and forming or supporting the pivoting mass, the device being substantially arranged in a plane and comprising a first and a second flexible blade oriented in the same direction when the device is at rest, as well as an intermediate blade of significantly greater rigidity than flexible blades and connecting the first flexible blade to the second, the device comprising a first fixed link formed by the first support and a first end of the first blade, a second fixed link formed by a second end of the first blade and of a first end of the intermediate blade, a third fixed link formed of a second end of the intermediate blade and a first end of the second blade and a fourth fixed link formed from at least a second end of the second blade.
  • the device is remarkable in that the first and / or the fourth link is arranged substantially between the second and the third link in said direction when the device is at rest.
  • the invention is a pivot with flexible blades comprising an intermediate blade of greater rigidity than the flexible blades and of which the first and / or the fourth fixed link is arranged between the second and the third fixed link.
  • a pivot makes it possible to keep a more stable center of mass during the pivoting of the mass, so that the flexibility and the return torque are more linear.
  • the problems of anisochronism due to gravity are also greatly reduced, in particular in a resonator mechanism, so that the mechanical watch movements are more precise.
  • the fourth fixed link is arranged between the second end of the second blade and the second support, which is rotatable, the first support being fixed.
  • the fourth link is arranged between the second and the third link in said direction when the device is at rest.
  • the first and the fourth link are arranged between the second and the third link in said direction when the device is at rest.
  • the intermediate blade is bent, preferably U-shaped.
  • the intermediate blade is flexible with an inertia of section greater than that of the flexible blades.
  • the length of the first blade L 1 L
  • the length L 1 of the first blade L 1 L
  • the device comprises a second intermediate blade, the fourth link being formed from the second end of the second blade and from a first end of the second intermediate blade, the first support being rotatable.
  • the device comprises a third flexible blade between the second intermediate blade and the second fixed support, the device comprising a fifth fixed link formed by a second end of the second intermediate blade and of a first end of the third blade, as well as a sixth fixed link formed from at least a second end of the third blade.
  • the sixth fixed link is formed by the second end of the third blade and the second fixed support.
  • the fifth and the sixth link are arranged between the second and the third link in said direction when the device is at rest.
  • the invention also relates to a clockwork resonator mechanism comprising a pivoting mass arranged to pivot in a rotary manner about a virtual pivot axis, the mechanism comprising two flexible guide devices in rotary pivoting according to the invention.
  • the directions of the flexible blades of the respective devices are substantially perpendicular to each other when the mechanism is at rest.
  • the mechanism comprises a third guide device, the three devices being superimposed.
  • the devices are distributed angularly, so that the directions of the flexible blades of the three guide devices are arranged at 120 ° two by two.
  • the rotary supports of the devices are integral.
  • the fixed supports of the devices are integral.
  • the flexible blades of each device are of the same length two by two.
  • the devices are arranged on parallel planes.
  • the invention also relates to a timepiece movement comprising such a timepiece resonator mechanism.
  • the invention relates to a guiding device 1 in rotary pivoting of a pivoting mass about a virtual pivot axis A, as shown in Figure figure 1 .
  • the device is preferably arranged substantially in a plane.
  • the pivot axis A is perpendicular to the plane of the device 1.
  • the device 1 comprises a fixed support 2 and a rotating support 3 intended to form or support the pivoting mass.
  • the device 1 comprises a first 4 and a second flexible blade 5 as well as an intermediate blade 6 connecting the first flexible blade 4 to the second 5.
  • the first 4 and the second blade 5 preferably have an inertia of similar or even identical section. .
  • the invention is illustrated in a particular preferred case where the most flexible blades are straight. Other geometries can nevertheless be envisaged, for example in the form of a coil, or others.
  • the intermediate blade 6 has a significantly greater rigidity than the flexible blades 4, 5. In other words, the intermediate blade 6 has a greater stiffness coefficient than the flexible blades.
  • the coefficient of the intermediate blade 6 is much greater, so that the intermediate blade 6 is considered not to be flexible under the effect of the pivoting mass.
  • the intermediate blade 6 is also flexible, but less than the first 4 and the second blade 5.
  • the difference in flexibility between the two types of blades is still significant.
  • the intermediate blade 6 is flexible under the effect of the pivoting mass.
  • the intermediate blade 6 has, for example, a larger section than the flexible blades 4, 5 if they are made of the same material.
  • the first 4 and the second flexible blade 5 have an identical section.
  • the figure 1 shows the device 1 at rest, that is to say that the rotary support 3 does not rotate and remains in a stable stationary position. As shown in the figure 1 , the first 4 and the second blade 5 are oriented in the same direction when the device 1 is at rest.
  • fixed connection is understood to mean that the ends are permanently fixed to one another, for example one end being rigidly embedded in the other.
  • the first blade 4 is substantially perpendicular to the fixed support 2, and the second blade 5 is substantially collinear with the first blade 4, while the intermediate blade 6 is substantially parallel to the first 4 and second 5 blades.
  • the four fixed links are aligned in the same direction of the flexible blades 4, 5 in the rest position.
  • the rotary support 3 has an L shape to offset the support 3 relative to the flexible blades 4, 5.
  • the base of the L is perpendicular to the flexible blades 4, 5, and has the fourth fixed link 11.
  • the back of the L is parallel to the flexible blades 4, 5, and is also provided with a free curved point P.
  • the free point P is only intended to indicate the location of the center of mass of the device 1. Thanks to the device according to the invention, the free point P, and therefore the center of mass, moves very little during the pivoting of the support 3 .
  • the first 7 and / or the fourth fixed link 11 is arranged between the second 8 and the third fixed link 9, when the device 1 is at rest.
  • the first 7 and the fourth fixed link 11 are arranged between the second 8 and the third fixed link 9, when the device 1 is at rest.
  • the first 4 and the second 5 flexible blade are arranged in the intermediate blade 6 in the rest position.
  • the intermediate blade 6 is bent, here in the shape of a straight U, to be able to partially surround the first 7 and the fourth fixed connection 11.
  • the lengths are vectors defined with respect to axes and an origin, not shown in the figures. It is understood that the negative values are oriented in the opposite direction of the positive values. Thus, some values can be negative, like L 1 or L 2 , and therefore x 1 or x 2 .
  • the center of mass of the system is more stable when the device is rotated, because the center of mass of the pivoting mass is stationary until order two of the limited development of the position of the center of mass with respect to the flexion angle in the plane of the device 1.
  • the flexible blades 4, 5 do not risk colliding during the pivoting.
  • the first fixed support 11, the second fixed support 12, and the blades form a one-piece assembly.
  • This monobloc assembly can be produced by technologies of the “MEMS” or “LIGA” or similar type, in silicon or the like, thermally compensated, in particular by a particular local growth of silicon dioxide, in certain areas of the part arranged for this purpose. , when this one-piece assembly is made of silicon.
  • the device comprises a second intermediate blade and a third flexible blade, the rotary and fixed supports being reversed compared to the previous embodiments.
  • the first fixed link is formed by the rotary support and the first end of the first flexible blade
  • the second fixed link is formed by the second end of the first flexible blade and the first end of the first intermediate blade
  • the third link fixed is formed by the second end of the first intermediate blade and the first end of the second flexible blade
  • the fourth fixed link is formed by the second end of the second flexible blade and a first end of the second intermediate blade.
  • the device comprises a fifth fixed link formed by a second end of the second intermediate blade and a first end of the third flexible blade, as well as a sixth fixed link formed by the second end of the third flexible blade and the fixed support.
  • the first, fourth, fifth and sixth fixed links are for example arranged between the second and the third fixed link, when the device is at rest.
  • the figure 2 shows a first embodiment of a resonator mechanism 10 comprising two pivoting guide devices 12, 21 similar to that described above.
  • the first guide device 12 comprises a first fixed support 14 and a first rotary support 33, a first 16 and a second 17 flexible blade, as well as a first intermediate blade 31 connecting the first flexible blade 16 to the second 17.
  • the second Guide device 21 comprises a second fixed support 13 and a second rotary support 34, a third 18 and a fourth 19 flexible blade, as well as a second intermediate blade 32 connecting the third flexible blade 18 to the fourth 19.
  • the flexible blades 16 , 17, 18, 19 of the two devices 12, 21 are of the same length in pairs.
  • first blade 16 of the first device 12 and the third blade 18 of the second device 21 are of the same length, as well as the second blade 17 of the first device 12 and the fourth blade 19 of the second device 21 are of the same length.
  • the intermediate blades 42, 45 are arranged so that the bases of the U are oriented towards the outside of the mechanism.
  • the two devices 12, 21 are arranged on two parallel planes to be able to pivot without clashing of the blades.
  • the two devices 12, 21 are substantially perpendicular to one another.
  • the directions of the flexible blades 16, 17, 18, 19 of the respective devices 12, 21 are substantially perpendicular when the mechanism 10 is at rest.
  • the devices can be oriented differently, forming an angle other than 90 ° between them, for example 60 °.
  • the directions of the flexible blades are straight.
  • the intermediate blades 31, 32 of the two devices 12, 21 are substantially perpendicular in the rest position, and cross at a first point 35. As the devices 12, 21 are on two different planes, the blades do not collide during the operation of the mechanism 10.
  • the first 16 and the third 18 flexible blade are substantially perpendicular in the rest position, and intersect at a second point 36 defining the center of mass of the rotary support and of the pivoting mass.
  • the second point 36 also defines the position of the virtual axis around which the rotation of the mechanism occurs, in particular for the pivoting mass.
  • the pivot axis is substantially perpendicular to the planes of the devices.
  • the rotary supports 33, 34 of the two devices are integral with one another, as are the fixed supports 22, 23 of the two devices 12, 21.
  • the rotary supports 33, 34 here have the shape of a straight blade, which may be of the same nature as the intermediate blades, preferably non-flexible.
  • the rotary supports 33, 34 are substantially perpendicular to the flexible blades 16, 17, 18, 19 of the respective devices 12, 21.
  • the rotary supports 33, 34 are fixed to each other by their opposite ends to form a wedge. 15 square.
  • the wedge 15 can form a support for an oscillating weight of the mechanism, a balance for example.
  • the two devices 12, 21 pivot, so that the wedge 15 performs a periodic pendulum movement around the virtual axis.
  • the movement is produced thanks to the flexible blades which bend under the effect of the movement of the rotating supports with or without the mass.
  • the resonator mechanism 10 can comprise a plurality of such flexible pivoting guide devices 12, 21 mounted in series, to increase the total angular travel, arranged in parallel planes, and around the same virtual pivot axis A.
  • the figures 3 to 6 are variants of a second embodiment of a mechanism 20, 30, 40 comprising two devices 58, 59 according to the invention, and in which only the fourth fixed link 51, 55 is arranged between the second 48, 53 and the third fixed link 49, 54 in the rest position.
  • the devices 58, 59 each comprise two flexible blades 39, 41, 43, 44 and an intermediate blade 42, 45. As in the first embodiment, the devices 58, 59 are substantially perpendicular to each other. .
  • the first fixed link 47, 52 is arranged outside the intermediate blade 42, 45.
  • the first flexible blade 39, 43 is outside the intermediate blade 42, 45.
  • the intermediate blades 42, 45 have a shape of a deformed U, in which the branch connected to the first flexible blade 39, 43 by the first fixed link 48, 53 is slightly convex and longer than the other, the base of the U being concave towards the interior of the U.
  • the fixed supports are identical in the different variants, and together form a first circular arc 37 with an angle substantially equal to 90 °.
  • the first arc 37 comprises a first attachment 46, here a ring arranged on the outer part of the arc 37 in the plane of the device, in order to be able to fix the resonator mechanism to a watch movement.
  • the two rotary supports together form a second circular arc 38 smaller than the first, with an angle substantially equal to 90 °, the center of which is substantially the same as that of the first arc 37.
  • the first 37 and the second arc 38 are substantially parallel in the rest position.
  • a second clip 56 is attached to the second arch 38.
  • the second clip 56 is a ring.
  • the second fastener 56 makes it possible to fix an oscillating weight, for example a balance of a watch movement.
  • the ring forming the second attachment 56 of the figure 3 is offset relative to the mechanism 20 and is connected by an additional blade 57, which can also be flexible, to one end of the second arch 38.
  • the second attachment 56 is fixed and centered on the second circular arc 38.
  • the devices 61, 62 are arranged so that the base of the U of the intermediate blades 66, 67 are oriented towards the inside of the mechanism, by symmetry of the intermediate blades of the preceding variants with respect to the direction of the flexible blades 39, 41, 43, 44.
  • the rotary supports 63, 64 are curved, and intersect in different planes before joining the second clip 65.
  • the second clip 65 is arranged symmetrically opposite the first clip 46 with respect to at the center of mass of the mechanism formed at the intersection of the second flexible blades 41, 44.
  • the perspective view of the figure 6 makes it possible to observe the two levels of two devices 61, 62. It is noted that the first arch 37 formed from the fixed supports, as well as the second fastener 65 have a sufficient thickness to allow the fixed connections in the two different planes.
  • the two devices pivot, so that the clip performs a periodic pendulum movement around the virtual axis.
  • the movement is produced thanks to the flexible blades which bend under the effect of the movement of the rotating supports with or without the mass.
  • the figure 7 shows a resonator mechanism 50 similar to that of the figure 3 , wherein the flexible blades 72, 73, 74, 75 have lateral reinforcements 71 to prevent anticlastic curvature of the blade.
  • the reinforcements consist of ribs arranged on either side of the blade to occasionally increase the thickness of the blade 72, 73, 74, 75.
  • the ribs are placed periodically on each face of the blade, preferably placed over the entire blade. the height of the blade 72, 73, 74, 75.
  • the intermediate blades 76, 77 further have an alveolar structure in the thickness of the blade.
  • the cells are tubular over the entire height of the blade to obtain “skeleton” blades.
  • the weight of the intermediate blades 76, 77 is reduced while maintaining sufficient rigidity.
  • the figure 8 shows a third embodiment of a resonator mechanism 60 comprising two guide devices 81, 82 each having three flexible blades 83, 84, 85, 86, 87, 88, and two intermediate blades 89, 91, 92, 93 according to third embodiment of the guide device 81, 82 in pivoting described above.
  • the two devices 81, 82 are arranged perpendicularly and cross at the level of the second intermediate blades 92, 93.
  • the second intermediate blades 92, 93 describe a recess so as not to be in contact with one another. For this, they have a U shape, which can fit perpendicularly into each other without touching.
  • the first intermediate blades 89, 91 also have a U shape, the length of which corresponds to that of their own device 81, 82.
  • the length of each second flexible blade 85, 86 corresponds substantially to the added length of the first 83, 84 , and the third blade 87, 88 intermediate their respective device 81, 82.
  • the flexible blades 83, 84, 85, 86, 87, 88, the second intermediate blades 92, 93, the rotating and fixed supports of the two devices 81, 82 are arranged in the same plane.
  • the first intermediate blades 89, 91 are arranged in a second plane parallel to the first.
  • the rotary supports of the devices 81, 82 are integral and form an arc of a circle 94.
  • the fixed supports of each device 81, 82 are also integral with one another so as to form a wedge 95 in the arc of a circle 94.
  • the arc of a circle 94 can move relative to the corner 95, when the mechanism is in motion.
  • the first, fourth, fifth and sixth fixed links are arranged between the second 96, 97 and the third fixed link 98, 99.
  • the figures 9 and 10 show a fourth embodiment of a resonator mechanism 100 comprising three guide devices 101, 102, 103, distributed angularly around an axis of symmetry A of the mechanism.
  • the devices 101, 102, 103 are superimposed and oriented so as to form an angle of 120 ° between them.
  • the directions of the flexible blades of the three guide devices 101, 102, 103 are arranged at 120 ° two by two.
  • the axis of symmetry A passes substantially through the second flexible blades 105, 106, 107 of each device 101, 102, 103 when the mechanism is at rest.
  • the center of mass of the pivoting mass is defined by the axis of symmetry, which is the point of intersection of the second flexible blades 105, 106, 107.
  • the guide devices 101, 102, 103 are of the type described for the second embodiment of the resonator mechanism of the figures 3 and 4 , except supports 108, 109.
  • the rotary supports 109 comprise first arcs 111, 112, 113.
  • the rotary supports 109 also comprise second superimposed circular arcs 114, 115, 116 whose lengths are different to reach respective first arcs 111, 112, 113 of each device 101, 102, 103.
  • the first 111, 112, 113 and second arcs 114, 115, 116 are linked by a rectilinear portion 117, 118, 119.
  • the second arcs 114, 115, 116 are integral and are extended by a first fastener 120 directed towards the outside of the mechanism 100.
  • the fixed supports 108 include third arcs 121, 122, 123 superimposed of different lengths depending on the arrangement of the devices 101, 102, 103.
  • the third arcs 121, 122, 123 are integral and extended outwardly of the mechanism by a second fastener 125.
  • the second 114, 115, 116 and the third arcs of a circle 121, 122, 123 define a circular space inside which the elements of the devices 101, 102, 103 are arranged, except for the clips 120, 125.
  • the first 120 and the second clip 125 are preferably arranged symmetrically on either side of this space.
  • the invention also relates to a timepiece movement comprising a resonator mechanism such as one of those described above, for example for a balance of the timepiece movement.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
EP19188844.5A 2019-07-29 2019-07-29 Führungsvorrichtung zum schwenken und resonatormechanismus eines uhrwerks für eine schwenkbare masse Pending EP3771947A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19188844.5A EP3771947A1 (de) 2019-07-29 2019-07-29 Führungsvorrichtung zum schwenken und resonatormechanismus eines uhrwerks für eine schwenkbare masse
US16/908,978 US11573532B2 (en) 2019-07-29 2020-06-23 Device for guiding pivotally and horological resonator mechanism for a pivoting mass
JP2020120370A JP7034216B2 (ja) 2019-07-29 2020-07-14 枢転錘のための枢転案内装置および測時用振動子機構
CN202010755490.1A CN112305889B (zh) 2019-07-29 2020-07-28 用于枢转质量体的枢转引导装置和钟表谐振器机构

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19188844.5A EP3771947A1 (de) 2019-07-29 2019-07-29 Führungsvorrichtung zum schwenken und resonatormechanismus eines uhrwerks für eine schwenkbare masse

Publications (1)

Publication Number Publication Date
EP3771947A1 true EP3771947A1 (de) 2021-02-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19188844.5A Pending EP3771947A1 (de) 2019-07-29 2019-07-29 Führungsvorrichtung zum schwenken und resonatormechanismus eines uhrwerks für eine schwenkbare masse

Country Status (4)

Country Link
US (1) US11573532B2 (de)
EP (1) EP3771947A1 (de)
JP (1) JP7034216B2 (de)
CN (1) CN112305889B (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3206089A1 (de) * 2016-02-10 2017-08-16 The Swatch Group Research and Development Ltd. Resonatormechanismus eines uhrwerks
EP3451072A1 (de) * 2017-08-29 2019-03-06 The Swatch Group Research and Development Ltd Isochrones drehgelenk für uhrresonator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2894520A3 (de) * 2010-07-19 2016-06-22 Nivarox-FAR S.A. Schwingungsmechanismus mit elastischem und beweglichen Zapfen zur Energieübertragung
CH710537A2 (fr) * 2014-12-18 2016-06-30 Swatch Group Res & Dev Ltd Oscillateur d'horlogerie à diapason.
CN106662839B (zh) 2015-02-03 2019-03-29 Eta瑞士钟表制造股份有限公司 等时钟表谐振器
CH712068B1 (fr) 2016-01-29 2019-11-29 Eta Sa Mft Horlogere Suisse Mécanisme résonateur d'horlogerie à pivot virtuel.
CH713137A2 (fr) * 2016-11-16 2018-05-31 Swatch Group Res & Dev Ltd Protection d'un mécanisme résonateur à lames contre les chocs axiaux.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3206089A1 (de) * 2016-02-10 2017-08-16 The Swatch Group Research and Development Ltd. Resonatormechanismus eines uhrwerks
EP3451072A1 (de) * 2017-08-29 2019-03-06 The Swatch Group Research and Development Ltd Isochrones drehgelenk für uhrresonator

Also Published As

Publication number Publication date
JP2021021727A (ja) 2021-02-18
US11573532B2 (en) 2023-02-07
US20210034016A1 (en) 2021-02-04
JP7034216B2 (ja) 2022-03-11
CN112305889B (zh) 2022-01-07
CN112305889A (zh) 2021-02-02

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