EP1705534A1 - Inertial balance - Google Patents

Inertial balance Download PDF

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Publication number
EP1705534A1
EP1705534A1 EP05006329A EP05006329A EP1705534A1 EP 1705534 A1 EP1705534 A1 EP 1705534A1 EP 05006329 A EP05006329 A EP 05006329A EP 05006329 A EP05006329 A EP 05006329A EP 1705534 A1 EP1705534 A1 EP 1705534A1
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EP
European Patent Office
Prior art keywords
mass
balance
adjusting
opening
masses
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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.)
Withdrawn
Application number
EP05006329A
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German (de)
French (fr)
Inventor
Frédéric Maier
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.)
Patek Philippe SA Geneve
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Patek Philippe SA Geneve
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 Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to EP05006329A priority Critical patent/EP1705534A1/en
Publication of EP1705534A1 publication Critical patent/EP1705534A1/en
Withdrawn legal-status Critical Current

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    • 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
    • G04B18/00—Mechanisms for setting frequency
    • G04B18/006—Mechanisms for setting frequency by adjusting the devices fixed on the balance

Definitions

  • the present invention relates to an inertial balance that is simple, easy to manufacture and adjust.
  • the inertial balance according to the invention is distinguished by the characteristics listed in claim 1.
  • the balance according to the present invention comprises a serge 1 and arms 2 to the number of at least two, here four in the example shown, forming a hub at their intersection, hub provided with a bore 3 for receiving an axis.
  • the serge 1 comprises at least two diametrically opposite points of the openings 4 defining housing whose side walls 5, parallel to each other and to a diameter of the balance passing through the center of these openings 4, form lateral guides.
  • the serge 1 of the balance has four cores centered on the axes of the arms 2 of the balance.
  • the bottom of the dies is coincident with the upper face 7 of the arms 2 of the beam,
  • the arms 2 of the balance have pins or cylindrical pins 6 emerging out of their upper face 7. These pins or pins are located on the diametral axis of the arms 2 and are perpendicular to a plane passing through the upper or lower face of the serge 1 of the pendulum.
  • these pins or pins 6 are located on a circumference of smaller diameter than that passing through the inner radial ends of the side walls 5 of the dies, but this may not be the case.
  • the balance also comprises adjusting masses 8 formed of cylindrical plates provided with an opening 9 in the form of a spiral portion.
  • Each adjusting mass 8 further comprises two drive notches 10 located on a diameter of the adjusting mass 8 extending from the periphery of the adjusting mass to the opening 9 in the form of a spiral portion.
  • the depth of these notches is preferably of the order of 40% to 60% of the thickness of the control mass 8.
  • the position of the opening 9 and the notches 10 with respect to the cylindrical shape of the adjusting mass 8 is such that the center of gravity of this adjusting mass 8 coincides with the axis of the envelope of the cylindrical mass setting 8.
  • the width of the opening 9 of the control masses 8 is slightly smaller than the diameter of the pins 6 of the beam so as to cause clamping.
  • the outer diameter of the cylindrical adjustment masses corresponds to the width of the cores.
  • a pin 6 is introduced into the opening 9 of a control mass, the lateral walls 5 of the dies 4 are in contact with the external cylindrical surface of the control masses 8 and serve as a guide to these masses 8.
  • the stud 6 being of a diameter slightly larger than the width of the opening 9 of the adjusting mass 8, this adjusting mass is held in place on the stud 6 by the forces due to its elastic deformation.
  • the adjusting mass 8 is situated in its position farthest from the center of the balance, the stud 6 being housed at the end of the opening 9 of this mass 8 which is closest to the periphery of this mass 8.
  • the center of gravity of the masses 8 therefore moves along a radius of the balance.
  • the shape of the opening 9 being a spiral, there is a relation between the angular displacement of the adjusting mass 8 and its radial displacement along the radius of the balance.
  • the radial displacement of the mass 8 is not proportional to its angular displacement, but for example that there is a proportionality relation between an angular displacement of the mass and the variation of inertia of the balance induced by the radial displacement corresponding of the mass 8.
  • the driving notches 10 of the adjusting masses 8 may be of different shapes, for example constituted by bores, or by lugs.
  • the device described is very simple to manufacture and adjust, it has a minimum of parts. In addition it is ensured that an angular displacement of the adjusting mass 8 causes a displacement thereof along a radius of the balance, determined by the pitch of the opening 9 in the form of a spiral.
  • the center of gravity of the control mass coincides with the axis of its cylindrical envelope so that for all the positions of the mass 8 its center of gravity is located on a beam radius.
  • the displacement of the adjusting mass 8 is a function of its angular displacement, which facilitates the adjustment of the balance by the adjuster and makes it possible to choose which physical quantity, displacement or variation of inertia, must be proportional to the angular displacement of the mass.

Abstract

The wheel has a felloe (1) with two counter sinks (4), in which adjusting masses (8) are mounted. Each counter sink has two lateral walls (5) parallel to a radius of the wheel. A guide pin (6) is located on an axis of symmetry of each sink and projects from a side of the wheel having the counter sinks. Each mass has a cylindrical outer wall cooperating with the lateral walls of the sink and a spiral opening (9) with constant or variable step, receiving the pin. Diameter of the pin is larger than the width of the opening so that the mass is maintained on the pin.

Description

La présente invention a pour objet un balancier inertiel qui soit simple, facile à fabriquer et à régler.The present invention relates to an inertial balance that is simple, easy to manufacture and adjust.

Le balancier inertiel selon l'invention se distingue par les caractéristiques énumérées à la revendication 1.The inertial balance according to the invention is distinguished by the characteristics listed in claim 1.

Le dessin annexé illustre schématiquement et à titre d'exemple une forme d'exécution du balancier inertiel linéaire selon l'invention.

  • La figure 1 est une vue en plan du balancier selon l'invention,
  • La figure 2 est une coupe partielle du balancier selon la ligne A-A de la figure 1.
  • La figure 3 est une vue en plan à plus grande échelle d'une masselotte de réglage.
  • La figure 4 est une vue en coupe selon la ligne B-B de la figure 3.
  • La figure 5 est une vue en coupe selon la ligne C-C de la figure 3.
The accompanying drawing illustrates schematically and by way of example an embodiment of the linear inertial balance according to the invention.
  • FIG. 1 is a plan view of the balance according to the invention,
  • FIG. 2 is a partial section of the balance according to the line AA of FIG.
  • Figure 3 is a plan view on a larger scale of a control weight.
  • Figure 4 is a sectional view along line BB of Figure 3.
  • Figure 5 is a sectional view along the line CC of Figure 3.

Le balancier selon la présente invention comporte une serge 1 et des bras 2 au nombre de deux au moins, ici de quatre dans l'exemple illustré, formant un moyeu à leur intersection, moyeu muni d'un perçage 3 destiné à recevoir un axe.The balance according to the present invention comprises a serge 1 and arms 2 to the number of at least two, here four in the example shown, forming a hub at their intersection, hub provided with a bore 3 for receiving an axis.

La serge 1 comporte en au moins deux points diamétralement opposés des noyures 4 définissant des logements dont les parois latérales 5, parallèles entre elles et à un diamètre du balancier passant par le centre de ces noyures 4, forment des guides latéraux. Dans l'exemple illustré la serge 1 du balancier comporte quatre noyures centrées sur les axes des bras 2 du balancier. Dans l'exemple illustré le fond des noyures est confondu avec la face supérieure 7 des bras 2 du balancier,The serge 1 comprises at least two diametrically opposite points of the openings 4 defining housing whose side walls 5, parallel to each other and to a diameter of the balance passing through the center of these openings 4, form lateral guides. In the example illustrated, the serge 1 of the balance has four cores centered on the axes of the arms 2 of the balance. In the example illustrated, the bottom of the dies is coincident with the upper face 7 of the arms 2 of the beam,

Les bras 2 du balancier comportent des tétons ou goupilles 6 cylindriques émergeant hors de leur face supérieure 7. Ces tétons ou goupilles sont situés sur l'axe diamétral des bras 2 et sont perpendiculaires à un plan passant par la face supérieure ou inférieure de la serge 1 du balancier.The arms 2 of the balance have pins or cylindrical pins 6 emerging out of their upper face 7. These pins or pins are located on the diametral axis of the arms 2 and are perpendicular to a plane passing through the upper or lower face of the serge 1 of the pendulum.

Dans l'exemple illustré ces tétons ou goupilles 6 sont situés sur une circonférence de diamètre inférieur à celle passant par les extrémités radiales internes des parois latérales 5 des noyures, mais ceci pourrait ne pas être le cas.In the illustrated example, these pins or pins 6 are located on a circumference of smaller diameter than that passing through the inner radial ends of the side walls 5 of the dies, but this may not be the case.

Le balancier comporte encore des masses de réglage 8 formées de plaquettes cylindriques munies d'une ouverture 9 en forme d'une portion de spirale. Chaque masse de réglage 8 comporte encore deux encoches d'entraînement 10 situées sur un diamètre de la masse de réglage 8 s'étendant de la périphérie de la masse de réglage jusqu'à l'ouverture 9 en forme d'une portion de spirale. La profondeur de ces encoches est de préférence de l'ordre de 40% à 60% de l'épaisseur de la masse de réglage 8.The balance also comprises adjusting masses 8 formed of cylindrical plates provided with an opening 9 in the form of a spiral portion. Each adjusting mass 8 further comprises two drive notches 10 located on a diameter of the adjusting mass 8 extending from the periphery of the adjusting mass to the opening 9 in the form of a spiral portion. The depth of these notches is preferably of the order of 40% to 60% of the thickness of the control mass 8.

La position de l'ouverture 9 et des encoches 10 par rapport à la forme cylindrique de la masse de réglage 8 est telle que le centre de gravité de cette masse de réglage 8 soit confondu avec l'axe de l'enveloppe de la masse cylindrique de réglage 8.The position of the opening 9 and the notches 10 with respect to the cylindrical shape of the adjusting mass 8 is such that the center of gravity of this adjusting mass 8 coincides with the axis of the envelope of the cylindrical mass setting 8.

La largeur de l'ouverture 9 des masses de réglage 8 est légèrement inférieure au diamètre des tétons 6 du balancier de manière à provoquer un serrage. Le diamètre extérieur des masses de réglage cylindrique correspond à la largeur des noyures.The width of the opening 9 of the control masses 8 is slightly smaller than the diameter of the pins 6 of the beam so as to cause clamping. The outer diameter of the cylindrical adjustment masses corresponds to the width of the cores.

Lorsque l'on positionne les masses de réglage 8 dans les noyures 4 on introduit un téton 6 dans l'ouverture 9 d'une masse de réglage, les parois latérales 5 des noyures 4 sont en contact avec la surface cylindrique externe des masses de réglage 8 et servent de guide à ces masses 8. Le téton 6 étant d'un diamètre légèrement plus grand que la largeur de l'ouverture 9 de la masse de réglage 8, cette masse de réglage est maintenue en place sur le téton 6 par les forces dues à sa déformation élastique.When the adjusting masses 8 are positioned in the dies 4, a pin 6 is introduced into the opening 9 of a control mass, the lateral walls 5 of the dies 4 are in contact with the external cylindrical surface of the control masses 8 and serve as a guide to these masses 8. The stud 6 being of a diameter slightly larger than the width of the opening 9 of the adjusting mass 8, this adjusting mass is held in place on the stud 6 by the forces due to its elastic deformation.

Sur la gauche de la figure 1 la masse de réglage 8 est située dans sa position la plus éloignée du centre du balancier, le téton 6 étant logé à l'extrémité de l'ouverture 9 de cette masse 8 qui est la plus proche de la périphérie de cette masse 8.On the left of FIG. 1 the adjusting mass 8 is situated in its position farthest from the center of the balance, the stud 6 being housed at the end of the opening 9 of this mass 8 which is closest to the periphery of this mass 8.

A partir de cette position on peut, à l'aide d'un outil comportant des organes d'entraînement venant se loger dans les encoches 10 de la masse de réglage, déplacer angulairement cette masse de réglage 8. Un tel déplacement angulaire de la masse de réglage déplacera celle-ci, par l'interaction du téton 6 avec l'ouverture 9 et des parois latérales 5 des noyures 4 avec la paroi périphérique de la masse 8, radialement vers le centre du balancier en passant par les positions illustrées en haut, à droite puis en bas de la figure 1. Dans cette dernière position la masse 8 est dans sa position la plus proche du centre du balancier et le téton 6 est positionné dans l'extrémité de l'ouverture 9 qui est la plus éloignée de la périphérie de la masse 8.From this position it is possible, with the aid of a tool comprising drive members that are housed in the notches 10 of the adjusting mass, to angularly move this adjusting mass 8. Such angular displacement of the mass adjustment will move it, by the interaction of the pin 6 with the opening 9 and the side walls 5 of the cores 4 with the peripheral wall of the mass 8, radially towards the center of the balance through the positions illustrated at the top , in the latter position the mass 8 is in its position closest to the center of the balance and the pin 6 is positioned in the end of the opening 9 which is furthest from the periphery of the mass 8.

Le centre de gravité des masses 8 se déplace donc suivant un rayon du balancier. De plus la forme de l'ouverture 9 étant une spirale, on a une relation entre le déplacement angulaire de la masse de réglage 8 et son déplacement radial le long du rayon du balancier. En modifiant le pas de la spirale formant l'ouverture 9 on peut modifier la relation existant entre le déplacement angulaire d'une masse de réglage 8 et son déplacement radial. Lorsque l'ouverture 9 a la forme d'une spirale à pas constant la relation entre la rotation et la translation de la masse 8 est une relation de proportionnalité, On peut par contre en réalisant une ouverture 9 en forme de spirale à pas variable faire en sorte que le déplacement radial de la masse 8 ne soit pas proportionnel à son déplacement angulaire mais par exemple qu'il y ait une relation de proportionnalité entre un déplacement angulaire de la masse et la variation d'inertie du balancier induite par le déplacement radial correspondant de la masse 8.The center of gravity of the masses 8 therefore moves along a radius of the balance. In addition, the shape of the opening 9 being a spiral, there is a relation between the angular displacement of the adjusting mass 8 and its radial displacement along the radius of the balance. By modifying the pitch of the spiral forming the opening 9, the relationship existing between the angular displacement of an adjusting mass 8 and its radial displacement can be modified. When the opening 9 is in the form of a constant pitch spiral, the relationship between the rotation and the translation of the mass 8 is a proportionality relation. On the other hand, it is possible to make an opening 9 in the form of a spiral with a variable pitch. such that the radial displacement of the mass 8 is not proportional to its angular displacement, but for example that there is a proportionality relation between an angular displacement of the mass and the variation of inertia of the balance induced by the radial displacement corresponding of the mass 8.

Ce choix permet de cas en cas de choisir la relation qui est optimale pour faciliter le travail du régleur effectuant le réglage et l'équilibrage du balancier.This choice allows cases in case of choosing the relationship which is optimal to facilitate the work of the adjuster performing the adjustment and balancing of the balance.

Dans une variante les encoches d'entraînement 10 des masses de réglage 8 peuvent être de formes différentes, par exemple constituées par des perçages, ou par des ergots.In a variant, the driving notches 10 of the adjusting masses 8 may be of different shapes, for example constituted by bores, or by lugs.

Le dispositif décrit est très simple à fabriquer et à régler, il comporte un minimum de pièces. De plus on assure qu'un déplacement angulaire de la masse de réglage 8 provoque un déplacement de celle-ci le long d'un rayon du balancier, déterminé par le pas de l'ouverture 9 en forme de spirale.The device described is very simple to manufacture and adjust, it has a minimum of parts. In addition it is ensured that an angular displacement of the adjusting mass 8 causes a displacement thereof along a radius of the balance, determined by the pitch of the opening 9 in the form of a spiral.

Par construction, le centre de gravité de la masse de réglage est confondu avec l'axe de son enveloppe cylindrique de sorte que pour toutes les positions de la masse 8 son centre de gravité soit situé sur un rayon du balancier. Enfin, le déplacement de la masse de réglage 8 est fonction de son déplacement angulaire ce qui facilite le réglage du balancier par le régleur et permet de choisir quelle grandeur physique, déplacement ou variation d'inertie, doit être proportionnel au déplacement angulaire de la masse 8.By construction, the center of gravity of the control mass coincides with the axis of its cylindrical envelope so that for all the positions of the mass 8 its center of gravity is located on a beam radius. Finally, the displacement of the adjusting mass 8 is a function of its angular displacement, which facilitates the adjustment of the balance by the adjuster and makes it possible to choose which physical quantity, displacement or variation of inertia, must be proportional to the angular displacement of the mass. 8.

Claims (8)

Balancier inertiel comprenant une serge (1) munie d'au moins deux noyures (4) diamétralement opposées dans lesquelles sont montées des masses de réglage (8) pouvant être déplacées par rapport à la serge du balancier, caractérisé par le fait que chaque noyure (4) comporte deux parois latérales parallèles (5) entre elles et à un rayon du balancier passant par l'axe de symétrie de la noyure (4); par le fait que le balancier comporte un téton (6) situé sur l'axe de symétrie de chaque noyure (4) saillant de la face du balancier comportant les noyures (4): et par le fait que chaque masse de réglage (8) comporte une paroi extérieure cylindrique destinée à coopérer avec les parois latérales (5) d'une noyure (4) ainsi qu'une ouverture 9 présentant la forme d'une spirale destinée à recevoir un téton (6), le diamètre du téton (6) et la largeur de l'ouverture (9) étant tels que la masse de réglage (8) est maintenue sur le téton (6).Inertial balance comprising a serge (1) provided with at least two diametrically opposite cores (4) in which adjusting masses (8) are mounted which can be displaced with respect to the strut of the balance, characterized in that each core ( 4) has two parallel side walls (5) between them and a beam radius passing through the axis of symmetry of the core (4); in that the rocker arm comprises a stud (6) situated on the axis of symmetry of each groove (4) projecting from the face of the rocker having the cores (4): and in that each adjusting mass (8) has a cylindrical outer wall for cooperating with the side walls (5) of a nock (4) and an opening 9 in the form of a spiral for receiving a nipple (6), the diameter of the nipple (6). ) and the width of the opening (9) being such that the adjusting mass (8) is maintained on the stud (6). Balancier selon la revendication 1, caractérisé par le fait que chaque masse de réglage (8) comporte encore une ou plusieurs formations d'entraînement en rotation (10).Pendulum according to claim 1, characterized in that each adjusting mass (8) further comprises one or more rotational drive formations (10). Balancier selon la revendication 1 ou la revendication 2, caractérisé par le fait que le centre de gravité de la masse de réglage (8) coïncide avec l'axe de l'enveloppe cylindrique de cette masse de réglage (8).Balance according to claim 1 or claim 2, characterized in that the center of gravity of the adjusting mass (8) coincides with the axis of the cylindrical envelope of the control mass (8). Balancier selon l'une des revendications précédentes, caractérisé par le fait que le pas de l'ouverture (9) est constant.Balance according to one of the preceding claims, characterized in that the pitch of the opening (9) is constant. Balancier selon la revendication 4, caractérisé par le fait que l'amplitude d'un déplacement radial d'une masse de réglage (8) suite à une rotation de cette masse de réglage (8) est proportionnel à l'amplitude angulaire de cette rotation.Balance according to claim 4, characterized in that the amplitude of a radial displacement of a control mass (8) following a rotation of this control mass (8) is proportional to the angular amplitude of this rotation . Balancier selon l'une des revendications 1 à 3, caractérisé par le fait que le pas de la spirale formant l'ouverture (9) des masses (8) est tel qu'une relation de proportionnalité existe entre un déplacement angulaire de la masse (8) et la variation d'inertie du balancier que provoque le déplacement radial de la masse (8) correspondant à son déplacement angulaire.Pendulum according to one of claims 1 to 3, characterized in that the pitch of the spiral forming the opening (9) of the masses (8) is such that a relationship of proportionality exists between an angular displacement of the mass ( 8) and the variation of inertia of the balance caused by the radial displacement of the mass (8) corresponding to its angular displacement. Balancier selon l'une des revendications précédentes, caractérisé par le fait qu'il comporte un nombre pair de masses de réglage (8) disposées deux à deux diamétralement opposées.Pendulum according to one of the preceding claims, characterized in that it comprises an even number of adjusting masses (8) arranged two by two diametrically opposite. Balancier selon l'une des revendications précédentes, caractérisé par le fait que les masses de réglage (8) sont maintenues chacune sur un téton (6) par leur déformation élastique.Balance according to one of the preceding claims, characterized in that the control masses (8) are each held on a stud (6) by their elastic deformation.
EP05006329A 2005-03-23 2005-03-23 Inertial balance Withdrawn EP1705534A1 (en)

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EP05006329A EP1705534A1 (en) 2005-03-23 2005-03-23 Inertial balance

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EP05006329A EP1705534A1 (en) 2005-03-23 2005-03-23 Inertial balance

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2420900A3 (en) * 2010-08-06 2012-02-29 Petra Damasko Oscillating body, mechanical oscillating system for wristwatches with such an oscillating body and clock with such an oscillating system
WO2012069371A1 (en) 2010-11-25 2012-05-31 Complitime Sa Balance for a timepiece
US9164485B2 (en) 2010-08-06 2015-10-20 Damasko Gmbh Oscillating body, mechanical oscillating system for wristwatches with such an oscillating body and watch with such an oscillating system
CN113031423A (en) * 2019-12-09 2021-06-25 斯沃奇集团研究和开发有限公司 Timepiece resonator mechanism with inertial mass with inertia and/or unbalance adjustment
TWI767384B (en) * 2019-12-18 2022-06-11 瑞士商尼瓦克斯 法爾公司 Timepiece balance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH280067A (en) * 1948-08-18 1951-12-31 Manuf D Horlogerie Patek Phili Balance wheel.
GB845773A (en) * 1956-08-10 1960-08-24 Junghans Geb Ag Improvements in or relating to balance wheels
GB1275195A (en) * 1969-08-01 1972-05-24 Junghans Gmbh Geb A mechanical oscillation system in a movement of a time fuse for projectiles
US20030179655A1 (en) * 2002-03-21 2003-09-25 Chopard Manufacture S.A. Balance wheel provided with an adjustment device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH280067A (en) * 1948-08-18 1951-12-31 Manuf D Horlogerie Patek Phili Balance wheel.
GB845773A (en) * 1956-08-10 1960-08-24 Junghans Geb Ag Improvements in or relating to balance wheels
GB1275195A (en) * 1969-08-01 1972-05-24 Junghans Gmbh Geb A mechanical oscillation system in a movement of a time fuse for projectiles
US20030179655A1 (en) * 2002-03-21 2003-09-25 Chopard Manufacture S.A. Balance wheel provided with an adjustment device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2420900A3 (en) * 2010-08-06 2012-02-29 Petra Damasko Oscillating body, mechanical oscillating system for wristwatches with such an oscillating body and clock with such an oscillating system
US8662742B2 (en) 2010-08-06 2014-03-04 Damasko Gmbh Oscillating body, mechanical oscillating system for wrist watches having such an oscillating body and watch having such an oscillating system
US9164485B2 (en) 2010-08-06 2015-10-20 Damasko Gmbh Oscillating body, mechanical oscillating system for wristwatches with such an oscillating body and watch with such an oscillating system
WO2012069371A1 (en) 2010-11-25 2012-05-31 Complitime Sa Balance for a timepiece
CN113031423A (en) * 2019-12-09 2021-06-25 斯沃奇集团研究和开发有限公司 Timepiece resonator mechanism with inertial mass with inertia and/or unbalance adjustment
CN113031423B (en) * 2019-12-09 2022-08-16 斯沃奇集团研究和开发有限公司 Timepiece resonator mechanism with inertial mass with inertia and/or unbalance adjustment
US11714386B2 (en) 2019-12-09 2023-08-01 The Swatch Group Research And Development Ltd Horological resonator mechanism with inertial mass with adjustment of inertia and/or unbalance
TWI767384B (en) * 2019-12-18 2022-06-11 瑞士商尼瓦克斯 法爾公司 Timepiece balance

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