EP1445668B1 - Oscillating weight - Google Patents

Oscillating weight Download PDF

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Publication number
EP1445668B1
EP1445668B1 EP03405056A EP03405056A EP1445668B1 EP 1445668 B1 EP1445668 B1 EP 1445668B1 EP 03405056 A EP03405056 A EP 03405056A EP 03405056 A EP03405056 A EP 03405056A EP 1445668 B1 EP1445668 B1 EP 1445668B1
Authority
EP
European Patent Office
Prior art keywords
inertia
sector
gravity
center
oscillating weight
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.)
Expired - Lifetime
Application number
EP03405056A
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German (de)
French (fr)
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EP1445668A1 (en
Inventor
Alberto Papi
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.)
Vaucher Manufacture Fleurier SA
Original Assignee
Vaucher Manufacture Fleurier 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
Priority to DE60328353T priority Critical patent/DE60328353D1/en
Application filed by Vaucher Manufacture Fleurier SA filed Critical Vaucher Manufacture Fleurier SA
Priority to EP03405056A priority patent/EP1445668B1/en
Priority to KR1020057014224A priority patent/KR101016252B1/en
Priority to JP2006502440A priority patent/JP4334566B2/en
Priority to CNB2004800034286A priority patent/CN100430842C/en
Priority to PCT/IB2004/000400 priority patent/WO2004070478A2/en
Priority to US10/541,287 priority patent/US7217030B2/en
Publication of EP1445668A1 publication Critical patent/EP1445668A1/en
Priority to HK04110228.9A priority patent/HK1067718A1/xx
Application granted granted Critical
Publication of EP1445668B1 publication Critical patent/EP1445668B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/16—Construction of the weights
    • G04B5/165—Weights consisting of several parts
    • 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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/18—Supports, suspensions or guide arrangements, for oscillating weights
    • G04B5/188—Bearing, guide arrangements or suspension of the movement forming oscillating weight

Definitions

  • the present invention relates to automatic watches. It relates more particularly to the oscillating masses.
  • the automatic watches comprise a movement provided with a time base, a gear synchronized by the time base, an energy accumulator, generally a cylinder, feeding the time base and ensuring the drive train, and an automatic mechanism providing energy to the energy store.
  • this mechanism comprises an oscillating mass, pivotally mounted on the frame of the movement by means of a bearing, an inverter transforming the reciprocating movement of the mass into a rotational movement in one direction, and a winding gear, which is of reduction type driven by the inverter.
  • the oscillations of the mass generated by the movements of the wearer of the watch, thus ensure the rotational drive of the winding train, which cooperates with the barrel to arm the spring.
  • the oscillating mass is arranged to carry a bearing, for example a ball bearing, which defines an axis of rotation. It comprises a mass member having a center of gravity offset with respect to the axis of rotation.
  • the mass member is generally designed to generate a maximum torque. It is made of heavy material, frequently gold or platinum in high-end watches. It includes, at its periphery, a sector of inertia defining the important part of its mass, and a board connecting the sector to the landing.
  • the oscillating mass generates a torque which is essentially a function of the mass of the sector and the position of its center of gravity, with reference to the axis of rotation.
  • This torque is applied to the first mobile of the winding gear through the inverter.
  • the rate of reduction of the gear train forming the winding gear defines the torque finally applied to the mainspring.
  • the document CH 317534 discloses an oscillating mass having two removable parts relative to each other.
  • the movements of the arm bring the mass into imbalance and it is the terrestrial acceleration that defines the torque. If it is a very active person, the accelerations can be significantly higher.
  • the winding mechanisms are chosen so that they ensure winding conditions of the spring for a normally active person. As a result, with a very active carrier the mainspring is strongly stressed and a risk of wear can not be excluded. If, on the contrary, the carrier is very calm, the mainspring is not sufficiently armed.
  • the first part of the oscillating mass comprises, in addition, a board, arranged to carry the bearing, and a sector of inertia.
  • This board extends from the center, which is provided with a hole in which is engaged the landing, towards the periphery which carries the sector of inertia.
  • the second portion is formed of at least one feeder pivotally mounted on the sector.
  • the fixing device comprises indexing means arranged to position the weight in a finite number of predefined positions in which the fixing device ensures the maintenance of the weight when it is in its second state, while it allows the passage from one to the other of these positions when it is in its first state.
  • the second part comprises two flyweights.
  • one of the weights can occupy a n finite number of defined positions so that the passage of said weight from one to the other of them generates a radial displacement the center of gravity of a value ⁇ G, and in that the second weight is arranged so as to occupy a number m of positions whose passage from one to the other of them causes a radial displacement of the center of gravity of a value ⁇ g, said weights being arranged so that the product m. ⁇ g is substantially equal to ⁇ G.
  • the moment of inertia of the mass decreases with the generated torque.
  • the second part of the mass also comprises a board and a sector of inertia, arranged side by side respectively of the board and the sector of the first part.
  • the fixing device is arranged so as to allow a displacement relative of the second part with reference to the first part by rotation about the axis of the oscillating mass.
  • the mass represented on the figure 1 comprises a board 10 comprising a central portion 10a of generally annular shape, provided with a central opening 10b for receiving a bearing 12 partially shown, for example a ball bearing, and arms 10c extending radially outwardly.
  • the central opening 10b is circular, defined by a circle of axis AA.
  • the plate 10 In its central portion 10a, the plate 10 carries, arranged in a ring, threaded rods 13 intended to secure the bearing 12 by means of bolts 14.
  • the arms 10c are connected by an annular portion 10d of center disposed on the axis A-A. It is provided with three holes in which are engaged screws 16a.
  • An inertia sector 18, in the form of an annular portion, is provided with five threaded feet 20. It is fixed to the board 10 by means of the screws 16a engaged in three of the threaded feet 20. It is advantageously made of heavy material, for example example in gold or platinum in high-end watches, brass for more common products. It extends over an angle of about 180 °. The function of the other two threaded feet 20 will be specified later.
  • the board 10 is secured to the sector 18 only at an angle of about 90 °, by its annular portion 10d.
  • the edges of the arms 10c connecting the portion central 10a at the annular portion 10d are also in arcs of circles whose centers are each at one end of the sector 18, coinciding with the centers of the two other threaded feet 20. These edges each carry six threaded feet 22, distributed regularly.
  • Weights 24 are mounted one on each of the end legs. They have a generally circular sector shape and comprise, at the top 24a of the sector, a cylindrical hole in which is engaged the threaded foot 20, a screw 16b ensuring the axial retention. The opposite side is provided with a finger 24b having an opening intended to be engaged in one or other of the threaded feet 22. A nut 26 is screwed on the foot 22 to maintain the weight 24 by its finger 24b.
  • the inertial sector 18 and the board 10 form a first part of a mass member, and the weights 24 a second part, the center of gravity of this member being in G.
  • the screws 16, the threaded feet 20 and the threaded feet 22, and the nuts 26 take the place of a fixing device, which allows or not, depending on whether its components are in a unscrewed or screwed state, the displacement of the flyweights 24 with reference to the sector of inertia 18 and the board 10.
  • the threaded feet provide indexing of the weights 24, so that they can occupy a fixed number of positions.
  • Torque adjustment can be performed by any watchmaker trained for this purpose. To guarantee optimal working conditions, a first adjustment can be made at the time of sale of the watch, by qualifying the person for whom it is intended with reference to its physical activities, both professional and leisure. On this basis, the instructions for use of the watch define the position in which the flyweights must be located. After a few days of wearing, it is possible to control that the chosen position is the right one. To make the adjustment, simply unscrew the screws 16b and nuts 26 to move the flyweights 24, then screw them back when these weights 24 are in the chosen position.
  • weights that do not have the same characteristics.
  • One of them can occupy a finite number n of positions, defined such that the passage from one to the other of them results in a radial displacement of the center of gravity of a value .DELTA.G.
  • the second weight is arranged so as to occupy a number m of positions whose passage from one to the other of them generates a radial displacement of the center of gravity of a value ⁇ g.
  • the weights are dimensioned so that the product m. ⁇ g is substantially equal to ⁇ G. In this way, it is possible to make an accurate correction.
  • the adjustment can be made particularly easy in a watch with a power reserve. It is then sufficient to establish a correlation between the displacement of the weights and the degree of winding of the spring.
  • This mass comprises first and second parts 32 and 34 each comprising a plate and a sector of inertia respectively referenced 36 and 38 for the first part 32, 40 and 42 for the second part 34.
  • the boards 36 and 40 have a generally circular sector shape, with an apex angle of approximately 45 °.
  • the top portion is cut to form an annular portion identified by the letter a , embracing an angle of about 200 ° for the portion 36a and about 90 ° for the portion 40a, as can be seen on the Figure 2c .
  • These portions are pierced with holes identified by the letter b , three oblong holes in the portion 36a and two cylindrical holes in the portion 40a.
  • the two boards are joined to each other by means of a fixing device comprising a clamping ring 44 provided with tapped holes 44a and disposed beneath the portions 36a and 40a, a cover 46 placed above the portions 36a and 40a, provided with cylindrical holes 46a aligned with the holes 44a, and screws 48 freely engaged in the holes of the cover 46 and annular portions 36a and 40a, and clamped in the tapped holes 44a of the clamping ring 44.
  • a fixing device comprising a clamping ring 44 provided with tapped holes 44a and disposed beneath the portions 36a and 40a, a cover 46 placed above the portions 36a and 40a, provided with cylindrical holes 46a aligned with the holes 44a, and screws 48 freely engaged in the holes of the cover 46 and annular portions 36a and 40a, and clamped in the tapped holes 44a of the clamping ring 44.
  • the board 36 is provided with oblong holes, it is possible to move it angularly with reference to the board 40, around an axis corresponding to the pivot axis AA of the mass, if the screws 48 are loosened.
  • the boards 36 and 40 are each pierced with three holes identified by the letter c , practiced on the periphery of the circle sector. Their function will be specified later,
  • the sectors of inertia 38 and 42 each comprise an annular portion, identified by the letter a and embracing an angle of about 80 °, and a bearing surface b attached to the annular portion a in its concave portion.
  • the span b which extends about 45, serves as support for the board. It is provided with two cylindrical holes identified by the letter c , in which are engaged, for each of them, a clamping pin 50, which is provided with a threaded hole.
  • Two screws 52 are engaged in two of the holes c of the boards 36 and 40 and in the tenons 50 in which they are tightened.
  • the boards 36 and 40 are, in this way, respectively integral sectors 38 and 42.
  • the sectors 38 and 42 could also be made of a part respectively with the boards 36 and 40, or welded to each other.
  • the fixing device further comprises a stiffening arm 54, in the form of an annular portion embracing an angle of about 90 °, disposed in the extension of the bearing surfaces 38b and 42b.
  • This arm comprises two oblong openings 54a each disposed facing the third hole of the boards.
  • a screw 56 cooperating with a nut 58, is engaged in each of these holes and in the holes 36c and 40c not occupied by the screws 52, so that by tightening the screw and its nut, it is possible to rigidly in solidarity with both parties.
  • the mass according to the invention has two moving parts one with reference to the other, their displacement inducing a radial position change of its center of gravity, it is possible to optimize the working conditions automatic watches, and thus obtain optimal performance for a minimum volume, and whatever the conditions imposed by the wearer.

Description

La présente invention concerne les montres automatiques. Elle se rapporte plus particulièrement aux masses oscillantes.The present invention relates to automatic watches. It relates more particularly to the oscillating masses.

Les montres automatiques comportent un mouvement muni d'une base de temps, d'un rouage synchronisé par la base de temps, d'un accumulateur d'énergie, généralement un barillet, alimentant la base de temps et assurant l'entraînement du rouage, et d'un mécanisme automatique fournissant l'énergie à l'accumulateur d'énergie.The automatic watches comprise a movement provided with a time base, a gear synchronized by the time base, an energy accumulator, generally a cylinder, feeding the time base and ensuring the drive train, and an automatic mechanism providing energy to the energy store.

Classiquement, ce mécanisme comprend une masse oscillante, montée pivotante sur le bâti du mouvement au moyen d'un palier, un inverseur transformant le mouvement alternatif de la masse en un mouvement de rotation dans un seul sens, et un rouage de remontoir, qui est de type démultiplicateur, entraîné par l'inverseur. Les oscillations de la masse, engendrées par les mouvements du porteur de la montre, assurent ainsi l'entraînement en rotation du rouage de remontoir, lequel coopère avec le barillet pour en armer le ressort.Conventionally, this mechanism comprises an oscillating mass, pivotally mounted on the frame of the movement by means of a bearing, an inverter transforming the reciprocating movement of the mass into a rotational movement in one direction, and a winding gear, which is of reduction type driven by the inverter. The oscillations of the mass, generated by the movements of the wearer of the watch, thus ensure the rotational drive of the winding train, which cooperates with the barrel to arm the spring.

La masse oscillante est agencée pour porter un palier, par exemple un roulement à billes, qui définit un axe de rotation. Elle comporte un organe massique ayant un centre de gravité décalé par rapport à l'axe de rotation. L'organe massique est généralement conçu de manière à engendrer un couple maximum. Il est réalisé en matériau lourd, fréquemment en or ou en platine dans les montres haut de gamme. Il comprend, à sa périphérie, un secteur d'inertie définissant la part importante de sa masse, et une planche reliant le secteur au palier.The oscillating mass is arranged to carry a bearing, for example a ball bearing, which defines an axis of rotation. It comprises a mass member having a center of gravity offset with respect to the axis of rotation. The mass member is generally designed to generate a maximum torque. It is made of heavy material, frequently gold or platinum in high-end watches. It includes, at its periphery, a sector of inertia defining the important part of its mass, and a board connecting the sector to the landing.

La masse oscillante engendre un couple fonction essentiellement de la masse du secteur et de la position de son centre de gravité, en référence à l'axe de rotation. Ce couple est appliqué sur le premier mobile du rouage de remontoir par l'intermédiaire de l'inverseur. Le taux de démultiplication du train d'engrenages formant le rouage de remontoir définit le couple finalement appliqué sur le ressort de barillet.The oscillating mass generates a torque which is essentially a function of the mass of the sector and the position of its center of gravity, with reference to the axis of rotation. This torque is applied to the first mobile of the winding gear through the inverter. The rate of reduction of the gear train forming the winding gear defines the torque finally applied to the mainspring.

Le document CH 317534 divulgue une masse oscillante comportant deux parties amovibles l'une par rapport à l'autre.The document CH 317534 discloses an oscillating mass having two removable parts relative to each other.

Lorsque le porteur est une personne calme, les déplacements du bras amènent la masse en déséquilibre et c'est l'accélération terrestre g qui définit le couple. S'il s'agit d'une personne très active, les accélérations rencontrées peuvent être sensiblement plus élevées. Actuellement, les mécanismes de remontoir sont choisis de manière à ce qu'ils assurent des conditions d'armage du ressort pour une personne normalement active. Il en résulte qu'avec un porteur très actif le ressort de barillet est fortement sollicité et un risque d'usure ne peut être exclu. Si, au contraire, le porteur est très calme, le ressort de barillet n'est pas suffisamment armé.When the wearer is a calm person, the movements of the arm bring the mass into imbalance and it is the terrestrial acceleration that defines the torque. If it is a very active person, the accelerations can be significantly higher. Currently, the winding mechanisms are chosen so that they ensure winding conditions of the spring for a normally active person. As a result, with a very active carrier the mainspring is strongly stressed and a risk of wear can not be excluded. If, on the contrary, the carrier is very calm, the mainspring is not sufficiently armed.

La présente invention, comme défini par les revendications, a pour but de permettre la prise en compte des spécificités du porteur pour améliorer les conditions de remontage. A cet effet, l'organe massique comporte :

  • ■ deux parties amovibles l'une en référence à l'autre, et agencées de manière telle que leur déplacement relatif engendre un déplacement radial du centre de gravité de l'organe massique, et
  • ■ un dispositif de fixation, coopérant avec les première et deuxième parties, susceptible d'occuper un premier état dans lequel lesdites parties peuvent être déplacées l'une en référence à l'autre, et un deuxième état dans lequel lesdites parties sont fixés rigidement l'une à l'autre.
The present invention, as defined by the claims, is intended to allow taking into account the specificities of the wearer to improve the winding conditions. For this purpose, the mass organ comprises:
  • Two removable parts, one with reference to the other, and arranged in such a way that their relative displacement causes a radial displacement of the center of gravity of the mass member, and
  • A fixing device, cooperating with the first and second parts, capable of occupying a first state in which said parts can be displaced with reference to the other, and a second state in which said parts are rigidly fixed; one to another.

Grâce au fait que les deux parties peuvent être déplacées l'une par rapport à l'autre et, avec elles le centre de gravité de la masse, il est possible de faire varier les conditions de travail du mécanisme et l'adapter ainsi au mode de vie du porteur.Thanks to the fact that the two parts can be moved relative to each other and with them the mass center of gravity, it is possible to vary the working conditions of the mechanism and thus adapt it to the mode life of the wearer.

De manière avantageuse, la première partie de la masse oscillante comporte, en outre, une planche, agencée pour porter le palier, et un secteur d'inertie. Cette planche s'étend du centre, lequel est muni d'un trou dans lequel est engagé le palier, vers la périphérie qui porte le secteur d'inertie. Certaines masses comportent un secteur d'inertie rapporté, alors que d'autres sont faites d'une pièce.Advantageously, the first part of the oscillating mass comprises, in addition, a board, arranged to carry the bearing, and a sector of inertia. This board extends from the center, which is provided with a hole in which is engaged the landing, towards the periphery which carries the sector of inertia. Some masses have a reported area of inertia, while others are made of a part.

Dans un premier mode de réalisation, la deuxième partie est formée d'au moins une masselotte montée pivotante sur le secteur. De plus, le dispositif de fixation comporte des moyens d'indexage agencés pour positionner la masselotte dans un nombre fini de positions prédéfinies dans lesquelles le dispositif de fixation assure le maintien de la masselotte lorsqu'il se trouve dans son deuxième état, alors qu'il permet le passage de l'une à l'autre de ces positions lorsqu'il se trouve dans son premier état.In a first embodiment, the second portion is formed of at least one feeder pivotally mounted on the sector. In addition, the fixing device comprises indexing means arranged to position the weight in a finite number of predefined positions in which the fixing device ensures the maintenance of the weight when it is in its second state, while it allows the passage from one to the other of these positions when it is in its first state.

Afin d'augmenter la plage de correction et/ou la précision de cette correction, la deuxième partie comporte deux masselottes.In order to increase the correction range and / or the accuracy of this correction, the second part comprises two flyweights.

Dans une variante permettant une grande précision de réglage, l'une des masselottes peut occuper un nombre n fini de positions définies de manière à ce que le passage de ladite masselotte de l'une à l'autre d'entres elles engendre un déplacement radial du centre de gravité d'une valeur ΔG, et en ce que la deuxième masselotte est agencée de manière à pouvoir occuper un nombre m de positions dont le passage de l'une à l'autre d'entre elles engendre un déplacement radial du centre de gravité d'une valeur Δg, lesdites masselottes étant agencées de manière à ce que le produit m.Δg est sensiblement égal à ΔG. De la sorte, il est possible de définir m.n positions de réglage, tout en évitant que les moyens d'indexage ne soient trop complexes.In a variant allowing a great accuracy of adjustment, one of the weights can occupy a n finite number of defined positions so that the passage of said weight from one to the other of them generates a radial displacement the center of gravity of a value ΔG, and in that the second weight is arranged so as to occupy a number m of positions whose passage from one to the other of them causes a radial displacement of the center of gravity of a value Δg, said weights being arranged so that the product m.Δg is substantially equal to ΔG. In this way, it is possible to define mn setting positions, while avoiding that the indexing means are too complex.

Dans ce mode de réalisation, le moment d'inertie de la masse diminue avec le couple engendré.In this embodiment, the moment of inertia of the mass decreases with the generated torque.

Dans un deuxième mode de réalisation, la deuxième partie de la masse comprend également une planche et un secteur d'inertie, disposés côte à côte respectivement de la planche et du secteur de la première partie. En outre, le dispositif de fixation est agencé de manière à permettre un déplacement relatif de la deuxième partie en référence à la première partie par rotation autour de l'axe de la masse oscillante.In a second embodiment, the second part of the mass also comprises a board and a sector of inertia, arranged side by side respectively of the board and the sector of the first part. In addition, the fixing device is arranged so as to allow a displacement relative of the second part with reference to the first part by rotation about the axis of the oscillating mass.

D'autres avantages et caractéristiques de l'invention ressortiront de la description qui va suivre, faite en regard du dessin annexé, dans lequel:

  • ■ Les figures 1 et 2 représentent des masses oscillantes, selon respectivement un premier mode et un deuxième mode de réalisation de l'invention, vues de dessus en a, vues en coupe en b, et en éclaté en c.
Other advantages and features of the invention will emerge from the description which follows, given with reference to the appended drawing, in which:
  • ■ The figures 1 and 2 represent oscillating masses, respectively according to a first embodiment and a second embodiment of the invention, seen from above in a , sectional views in b , and exploded in c .

La masse représentée sur la figure 1 comporte une planche 10 comprenant une portion centrale 10a de forme générale annulaire, munie d'une ouverture centrale 10b destinée à recevoir un palier 12 partiellement représenté, par exemple un roulement à billes, et des bras 10c s'étendant radialement vers l'extérieur. L'ouverture centrale 10b est circulaire, définie par un cercle d'axe A-A.The mass represented on the figure 1 comprises a board 10 comprising a central portion 10a of generally annular shape, provided with a central opening 10b for receiving a bearing 12 partially shown, for example a ball bearing, and arms 10c extending radially outwardly. The central opening 10b is circular, defined by a circle of axis AA.

Dans sa portion centrale 10a, la planche 10 porte, disposées en anneau, des tiges filetées 13 destinées à assurer la fixation du palier 12 au moyen de boulons 14.In its central portion 10a, the plate 10 carries, arranged in a ring, threaded rods 13 intended to secure the bearing 12 by means of bolts 14.

A leur périphérie, les bras 10c sont reliés par une portion annulaire 10d de centre disposé sur l'axe A-A. Elle est munie de trois trous dans lesquelles sont engagées des vis 16a.At their periphery, the arms 10c are connected by an annular portion 10d of center disposed on the axis A-A. It is provided with three holes in which are engaged screws 16a.

Un secteur d'inertie 18, en forme de portion annulaire, est muni de cinq pieds taraudés 20. Il est fixé à la planche 10 au moyen des vis 16a engagées dans trois des pieds taraudés 20. Il est avantageusement réalisé en matériau lourd, par exemple en or ou en platine dans les montres de haut de gamme, en laiton pour des produits plus courants. Il s'étend sur un angle d'environ 180°. La fonction des deux autres pieds taraudés 20 sera précisée plus loin.An inertia sector 18, in the form of an annular portion, is provided with five threaded feet 20. It is fixed to the board 10 by means of the screws 16a engaged in three of the threaded feet 20. It is advantageously made of heavy material, for example example in gold or platinum in high-end watches, brass for more common products. It extends over an angle of about 180 °. The function of the other two threaded feet 20 will be specified later.

La planche 10 n'est solidaire du secteur 18 que sur un angle de 90° environ, par sa portion annulaire 10d. Les bords des bras 10c reliant la portion centrale 10a à la portion annulaire 10d sont également en arcs de cercles dont les centres se trouvent chacun à l'une des extrémités du secteur 18, confondus avec les centres des deux autres pieds taraudés 20. Ces bords portent chacun six pieds filetés 22, répartis régulièrement.The board 10 is secured to the sector 18 only at an angle of about 90 °, by its annular portion 10d. The edges of the arms 10c connecting the portion central 10a at the annular portion 10d are also in arcs of circles whose centers are each at one end of the sector 18, coinciding with the centers of the two other threaded feet 20. These edges each carry six threaded feet 22, distributed regularly.

Des masselottes 24 sont montées une sur chacun des pieds 20 d'extrémités. Elles présentent une forme générale de secteur de cercle et comportent, au sommet 24a du secteur, un trou cylindrique dans lequel est engagé le pied taraudé 20, une vis 16b assurant le maintien axial. Le côté opposé est muni d'un doigt 24b comportant une ouverture destinée à être engagée dans l'un ou l'autre des pieds filetés 22. Un écrou 26 est vissé sur le pied 22 pour maintenir la masselotte 24 par son doigt 24b.Weights 24 are mounted one on each of the end legs. They have a generally circular sector shape and comprise, at the top 24a of the sector, a cylindrical hole in which is engaged the threaded foot 20, a screw 16b ensuring the axial retention. The opposite side is provided with a finger 24b having an opening intended to be engaged in one or other of the threaded feet 22. A nut 26 is screwed on the foot 22 to maintain the weight 24 by its finger 24b.

Dans cette masse oscillante, le secteur d'inertie 18 et la planche 10 forment une première partie d'un organe massique, et les masselottes 24 une deuxième partie, le centre de gravité de cet organe se trouvant en G. Les vis 16, les pieds taraudés 20 et les pieds filetés 22, ainsi que les écrous 26 tiennent lieu de dispositif de fixation, lequel permet ou non, selon que ses constituants sont dans un état dévissé ou vissé, le déplacement des masselottes 24 en référence au secteur d'inertie 18 et à la planche 10. En outre, les pieds filetés assurent un indexage des masselottes 24, de telle sorte que celles-ci peuvent occuper un nombre déterminé de positions.In this oscillating mass, the inertial sector 18 and the board 10 form a first part of a mass member, and the weights 24 a second part, the center of gravity of this member being in G. The screws 16, the threaded feet 20 and the threaded feet 22, and the nuts 26 take the place of a fixing device, which allows or not, depending on whether its components are in a unscrewed or screwed state, the displacement of the flyweights 24 with reference to the sector of inertia 18 and the board 10. In addition, the threaded feet provide indexing of the weights 24, so that they can occupy a fixed number of positions.

Avec la masse ainsi décrite, il est possible de faire varier de quelques pourcent le couple qu'elle applique sur le rouage en vue d'assurer le remontage du ressort moteur de la montre. Il suffit de modifier la position d'une ou des deux masselottes 24. Le centre de gravité G est d'autant plus décalé par rapport à l'axe A-A et, en conséquence, le couple est d'autant plus grand que les extrémités munies du doigt 24b des masselottes 24 se trouvent au voisinage du secteur 18. Au contraire, en ramenant le doigt 24b de manière à ce qu'il soit engagé dans un pied 22 voisin de la portion centrale 10a, le centre de gravité est décalé vers l'axe A-A, de telle sorte que le couple est réduit.With the mass thus described, it is possible to vary by a few percent the torque that it applies to the gear train in order to reassemble the motor spring of the watch. It suffices to modify the position of one or both flyweights 24. The center of gravity G is all the more offset with respect to the axis AA and, consequently, the torque is even greater than the ends provided with the finger 24b of the weights 24 are in the vicinity of the sector 18. On the contrary, by bringing the finger 24b so that it is engaged in a foot 22 adjacent the central portion 10a, the center of gravity is shifted to the AA axis, so that the torque is reduced.

L'ajustement du couple peut être réalisé par n'importe quel horloger formé à cet effet. Pour garantir des conditions optimales de travail, un premier réglage peut être fait au moment de la vente de la montre, en qualifiant la personne à qui elle est destinée en référence à ses activités physiques, tant professionnelles que de loisir. Sur cette base, le mode d'emploi de la montre définit la position dans laquelle doivent se trouver les masselottes. Après quelques jours de porter, il est possible de contrôler que la position choisie est la bonne. Pour effectuer le réglage, il suffit de dévisser les vis 16b et les écrous 26 pour pouvoir déplacer les masselottes 24, puis les revisser lorsque ces masselottes 24 se trouvent dans la position choisie.Torque adjustment can be performed by any watchmaker trained for this purpose. To guarantee optimal working conditions, a first adjustment can be made at the time of sale of the watch, by qualifying the person for whom it is intended with reference to its physical activities, both professional and leisure. On this basis, the instructions for use of the watch define the position in which the flyweights must be located. After a few days of wearing, it is possible to control that the chosen position is the right one. To make the adjustment, simply unscrew the screws 16b and nuts 26 to move the flyweights 24, then screw them back when these weights 24 are in the chosen position.

Afin d'assurer un réglage le plus précis possible, il est envisageable de disposer de masselottes n'ayant pas les mêmes caractéristiques. L'une d'elles peut occuper un nombre n fini de positions, définies de manière à ce que le passage de l'une à l'autre d'entre elles engendre un déplacement radial du centre de gravité d'une valeur ΔG. La deuxième masselotte est agencée de manière à pouvoir occuper un nombre m de positions dont le passage de l'une à l'autre d'entre elles engendre un déplacement radial du centre de gravité d'une valeur Δg. Les masselottes sont dimensionnées de manière à ce que le produit m.Δg soit sensiblement égal à ΔG. De la sorte, il est possible d'effectuer une correction précise.In order to ensure the most accurate adjustment possible, it is conceivable to have weights that do not have the same characteristics. One of them can occupy a finite number n of positions, defined such that the passage from one to the other of them results in a radial displacement of the center of gravity of a value .DELTA.G. The second weight is arranged so as to occupy a number m of positions whose passage from one to the other of them generates a radial displacement of the center of gravity of a value Δg. The weights are dimensioned so that the product m.Δg is substantially equal to ΔG. In this way, it is possible to make an accurate correction.

Le mode de réalisation décrit ci-dessus ne doit que peu être modifié pour atteindre ce résultat. Il suffit que les dimensions (épaisseur, longueur notamment) de l'une des masselottes soient réduites de manière adéquate pour obtenir l'effet recherché. Cette opération est facilement accessible à l'homme du métier.The embodiment described above should only be modified to achieve this result. It suffices that the dimensions (thickness, length in particular) of one of the weights are reduced adequately to obtain the desired effect. This operation is easily accessible to those skilled in the art.

Le réglage peut se faire de manière particulièrement aisée dans une montre munie d'une réserve de marche. Il suffit alors d'établir une corrélation entre le déplacement des masselottes et le degré d'armage du ressort.The adjustment can be made particularly easy in a watch with a power reserve. It is then sufficient to establish a correlation between the displacement of the weights and the degree of winding of the spring.

Dans le mode de réalisation décrit en référence à la figure 1, le moment d'inertie augmente en même temps qu'est déplacé le centre de gravité de la masse. Il est également possible de changer la position du centre de gravité tout en gardant le même moment d'inertie. C'est ce que permet le mode de réalisation représenté à la figure 2, qui montre une masse vue en plan en a et en coupe en b et en éclaté en c.In the embodiment described with reference to the figure 1 the moment of inertia increases at the same time as the center of gravity of the mass is displaced. It is also possible to change the position of the center of gravity while keeping the same moment of inertia. This is permitted by the embodiment shown in figure 2 , which shows a mass seen in plan in a and in section in b and exploded in c .

Cette masse comporte des première et deuxième parties 32 et 34 comprenant chacune une planche et un secteur d'inertie, respectivement référencés 36 et 38 pour la première partie 32, 40 et 42 pour la deuxième partie 34.This mass comprises first and second parts 32 and 34 each comprising a plate and a sector of inertia respectively referenced 36 and 38 for the first part 32, 40 and 42 for the second part 34.

Les planches 36 et 40 présentent une forme générale de secteur de cercle, d'angle au sommet environ égal à 45°. La partie sommitale est découpée pour former une portion annulaire identifiée par la lettre a, embrassant un angle d'environ 200° pour la portion 36a et d'environ 90° pour la portion 40a, comme on peut le voir sur la figure 2c. Ces portions sont percées de trous identifiés par la lettre b, trois trous oblongs dans la portion 36a et deux trous cylindriques dans la portion 40a.The boards 36 and 40 have a generally circular sector shape, with an apex angle of approximately 45 °. The top portion is cut to form an annular portion identified by the letter a , embracing an angle of about 200 ° for the portion 36a and about 90 ° for the portion 40a, as can be seen on the Figure 2c . These portions are pierced with holes identified by the letter b , three oblong holes in the portion 36a and two cylindrical holes in the portion 40a.

Les deux planches sont assemblées l'une à l'autre au moyen d'un dispositif de fixation comportant une bague de serrage 44 munie de trous taraudés 44a et disposée en-dessous des portions 36a et 40a, un couvercle 46 placé au-dessus des portions 36a et 40a, muni de trous cylindriques 46a alignés sur les trous 44a, et des vis 48 engagées librement dans les trous du couvercle 46 et des portions annulaires 36a et 40a, et serrées dans les trous taraudés 44a de la bague de serrage 44.The two boards are joined to each other by means of a fixing device comprising a clamping ring 44 provided with tapped holes 44a and disposed beneath the portions 36a and 40a, a cover 46 placed above the portions 36a and 40a, provided with cylindrical holes 46a aligned with the holes 44a, and screws 48 freely engaged in the holes of the cover 46 and annular portions 36a and 40a, and clamped in the tapped holes 44a of the clamping ring 44.

Comme la planche 36 est munie de trous oblongs, il est possible de la déplacer angulairement en référence à la planche 40, autour d'un axe correspondant à l'axe de pivotement A-A de la masse, si les vis 48 sont desserrées.As the board 36 is provided with oblong holes, it is possible to move it angularly with reference to the board 40, around an axis corresponding to the pivot axis AA of the mass, if the screws 48 are loosened.

Les planches 36 et 40 sont percées chacune de trois trous identifiés par la lettre c, pratiqués à la périphérie du secteur de cercle. Leur fonction sera précisée plus loin,The boards 36 and 40 are each pierced with three holes identified by the letter c , practiced on the periphery of the circle sector. Their function will be specified later,

Les secteurs d'inertie 38 et 42 comprennent chacun une portion annulaire, identifiée par la lettre a et embrassant un angle de 80° environ, et une portée b attachée à la portion annulaire a dans sa partie concave. La portée b, qui s'étend sur environ 45 , sert d'appui à la planche. Elle est munie de deux trous cylindriques identifiés par la lettre c, dans lesquels sont engagés, pour chacun d'eux, un tenon de serrage 50, lequel est muni d'un trou taraudé. Deux vis 52 sont engagées dans deux des trous c des planches 36 et 40 et dans les tenons 50 dans lesquels elles sont serrées. Les planches 36 et 40 sont, de la sorte, respectivement solidaires des secteurs 38 et 42.The sectors of inertia 38 and 42 each comprise an annular portion, identified by the letter a and embracing an angle of about 80 °, and a bearing surface b attached to the annular portion a in its concave portion. The span b , which extends about 45, serves as support for the board. It is provided with two cylindrical holes identified by the letter c , in which are engaged, for each of them, a clamping pin 50, which is provided with a threaded hole. Two screws 52 are engaged in two of the holes c of the boards 36 and 40 and in the tenons 50 in which they are tightened. The boards 36 and 40 are, in this way, respectively integral sectors 38 and 42.

En variante, les secteurs 38 et 42 pourraient aussi être réalisés d'une pièce respectivement avec les planches 36 et 40, ou soudés l'un à l'autre.Alternatively, the sectors 38 and 42 could also be made of a part respectively with the boards 36 and 40, or welded to each other.

Avec la structure telle qu'elle vient d'être décrite, il se peut que les planches 36 et 40 manquent de rigidité. Aussi, pour rendre mieux solidaires les deux parties, le dispositif de fixation comporte, en outre, un bras de rigidification 54, en forme de portion annulaire embrassant un angle de 90° environ, disposé dans le prolongement des portées 38b et 42b. Ce bras comprend deux ouvertures oblongues 54a disposées chacune en regard du troisième trou des planches. Une vis 56, coopérant avec un écrou 58, est engagée dans chacun de ces trous et dans les trous 36c et 40c non occupés par les vis 52, de telle sorte qu'en serrant la vis et son écrou, il est possible de rendre rigidement solidaires les deux parties.With the structure as just described, it is possible that the boards 36 and 40 lack rigidity. Also, to make the two parts more secure, the fixing device further comprises a stiffening arm 54, in the form of an annular portion embracing an angle of about 90 °, disposed in the extension of the bearing surfaces 38b and 42b. This arm comprises two oblong openings 54a each disposed facing the third hole of the boards. A screw 56, cooperating with a nut 58, is engaged in each of these holes and in the holes 36c and 40c not occupied by the screws 52, so that by tightening the screw and its nut, it is possible to rigidly in solidarity with both parties.

De nombreuses variantes aux deux modes de réalisations décrits ci-dessus sont, bien entendu, envisageables. Les solutions décrites font largement appel aux vis, ce qui est une solution particulièrement simple à mettre en oeuvre pour la réalisation de pièces uniques ou de prototypes. Dans le cas d'une production à grande échelle il serait envisageable d'utiliser d'autres systèmes de verrouillage, à cran par exemple, ou par tout autre moyen connu de l'homme du métier. Les deux parties constitutives de la masse pourraient aussi présenter des formes très différentes, et avoir des rapports dimensionnels variant considérablement, en fonction du déplacement relatif possible et de la plage de réglage souhaitée.Many variants to the two embodiments described above are, of course, conceivable. The solutions described make extensive use of screws, which is a particularly simple solution to implement for the realization of single pieces or prototypes. In the case of a large-scale production it would be possible to use other locking systems, notch for example, or by any other means known to those skilled in the art. The two constituent parts of the mass could also have very different shapes, and have dimensional ratios that vary considerably, depending on the possible relative displacement and the desired adjustment range.

Il serait également possible de construire une masse selon le deuxième mode de réalisation munie d'une masselotte telle que définie dans le premier mode de réalisation, de manière à permettre un ajustement grossier avec un déplacement relatif des deux parties, puis plus fin en réglant la position de la masselotte.It would also be possible to construct a mass according to the second embodiment equipped with a flyweight as defined in the first embodiment, so as to allow a coarse adjustment with a relative displacement of the two parts, then finer by adjusting the position of the weight.

Ainsi, grâce au fait que la masse selon l'invention présente deux parties mobiles l'une en référence à l'autre, leur déplacement induisant un changement de position radiale de son centre de gravité, il est possible d'optimiser les conditions de travail des montres automatiques, et ainsi obtenir un rendement optimal pour un volume minimum, et quelles que soient les conditions imposées par le porteur.Thus, thanks to the fact that the mass according to the invention has two moving parts one with reference to the other, their displacement inducing a radial position change of its center of gravity, it is possible to optimize the working conditions automatic watches, and thus obtain optimal performance for a minimum volume, and whatever the conditions imposed by the wearer.

Claims (6)

  1. Oscillating weight for an automatic watch, arranged to carry a bearing (12) defining an axis of rotation (A-A) and intended to be mounted on the frame of the watch, including a mass member having a center of gravity (G) shifted with respect to the axis of rotation, said member comprising: two parts that can be moved one (10, 18; 32) in relation to the other (24 ;34), and arranged such that their relative movement causes a radial movement of the center of gravity (G) of the mass member,
    characterized in that said member comprises a securing device (13, 14, 16b; 44, 46, 48, 54, 56) cooperating with the first and second parts, capable of occupying a first state in which said parts can be moved with reference to each other, and a second state in which said parts are rigidly secured to each other.
  2. Oscillating weight according to claim 1, characterized in that said first part includes a plate (10) arranged for carrying said bearing (12) and a sector of inertia (18) rigidly fixed to the plate (10).
  3. Oscillating weight according to claim 2, characterized in that said second part is formed of at least one inertia block (24) pivotably mounted on said sector (18) and in that said securing device includes indexing means (22) arranged for positioning said inertia block in a finite number of predefined positions in which said device holds said inertia block when said device is in its second state, whereas said device allows passage from one of these positions to another when said device is in its first state.
  4. Oscillating weight according to claim 3, characterized in that the second part includes two inertia blocks (24).
  5. Oscillating weight according to claim 4, wherein one of the inertia blocks (24) can occupy a finite number n of positions, defined such that the passage from one of the positions to another generates a radial movement of the center of gravity (G) of a value ΔG, and in that the second inertia block (24) is arranged so as to be able to occupy a number m of positions where the passage from one position to another generates a radial movement of the center of gravity of a value Δg, said inertia blocks (24) being arranged so that the product m. Δg is substantially equal to ΔG.
  6. Oscillating weight according to claim 2, wherein said second part (34) also includes a plate (40) and a sector of inertia (42), disposed respectively side by side with the plate (36) and the sector (38) of the first part (32), and in that the securing device is arranged to allow, in its first state, a relative angular movement of the second part (34) with reference to the first part (32) by rotation about said axis (A-A).
EP03405056A 2003-02-04 2003-02-04 Oscillating weight Expired - Lifetime EP1445668B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP03405056A EP1445668B1 (en) 2003-02-04 2003-02-04 Oscillating weight
DE60328353T DE60328353D1 (en) 2003-02-04 2003-02-04 Inertia
JP2006502440A JP4334566B2 (en) 2003-02-04 2004-02-04 Rotating weight
CNB2004800034286A CN100430842C (en) 2003-02-04 2004-02-04 Oscillating weight
KR1020057014224A KR101016252B1 (en) 2003-02-04 2004-02-04 Oscillating weight
PCT/IB2004/000400 WO2004070478A2 (en) 2003-02-04 2004-02-04 Oscillating weight
US10/541,287 US7217030B2 (en) 2003-02-04 2004-02-04 Oscillating weight
HK04110228.9A HK1067718A1 (en) 2003-02-04 2004-12-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03405056A EP1445668B1 (en) 2003-02-04 2003-02-04 Oscillating weight

Publications (2)

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EP1445668A1 EP1445668A1 (en) 2004-08-11
EP1445668B1 true EP1445668B1 (en) 2009-07-15

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EP03405056A Expired - Lifetime EP1445668B1 (en) 2003-02-04 2003-02-04 Oscillating weight

Country Status (8)

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US (1) US7217030B2 (en)
EP (1) EP1445668B1 (en)
JP (1) JP4334566B2 (en)
KR (1) KR101016252B1 (en)
CN (1) CN100430842C (en)
DE (1) DE60328353D1 (en)
HK (1) HK1067718A1 (en)
WO (1) WO2004070478A2 (en)

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CH699825B1 (en) * 2006-07-05 2010-05-14 Marco Danzinelli automatic watch.
EP1918789B1 (en) * 2006-10-31 2008-12-24 The Swatch Group Management Services AG Oscillating mass to recharge the energy source of a portable instrument
ATE544098T1 (en) * 2008-04-15 2012-02-15 Montres Jaquet Droz Sa SHOCK ABSORBER FOR FLYWHAT
EP2228693B1 (en) * 2009-03-13 2013-03-13 Bulgari Horlogerie S.A. Fixing device for the gongs of a sonnerie watch
CH703577B1 (en) * 2011-03-23 2015-10-15 Christian Dior Couture Sa oscillating weight for automatic and automatic watch shows with such a mass.
JP5731872B2 (en) * 2011-03-30 2015-06-10 セイコーインスツル株式会社 Rotating weight for timepiece and timepiece having the rotating weight
EP2592498A1 (en) * 2011-11-08 2013-05-15 ETA SA Manufacture Horlogère Suisse Oscillating mass
CH706000B1 (en) * 2012-01-13 2023-09-15 Christian Dior Couture Sa Winding mass.
WO2013141493A1 (en) * 2012-03-20 2013-09-26 Son Se Ik Rotor for watch movement
USD772095S1 (en) * 2014-07-16 2016-11-22 Richemont International Sa Oscillating weight
USD892666S1 (en) * 2018-01-05 2020-08-11 Harry Winston Sa Oscillating weight
TWD197439S (en) * 2018-02-20 2019-05-11 瑞士商哈利溫士頓公司 Dial
CH715510A1 (en) 2018-11-02 2020-05-15 Guenat Sa Montres Valgine Oscillating weight with variable geometry for a watch mechanism.
EP3879354A1 (en) * 2020-03-09 2021-09-15 The Swatch Group Research and Development Ltd Oscillating winding mass provided with a decorative element for automatic movement of a timepiece
CN111665706B (en) * 2020-07-03 2021-03-30 郑君雄 Automatic winding and old man watch capable of giving alarm by vibration
USD982468S1 (en) * 2022-02-28 2023-04-04 Cartier International Ag Watch dial

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JP2582155B2 (en) * 1989-04-25 1997-02-19 シチズン時計株式会社 Weights for self-winding
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JP3686123B2 (en) * 1995-06-22 2005-08-24 ペルレ ソシエテ アノニム Automatic watch mainspring winding device
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Publication number Publication date
EP1445668A1 (en) 2004-08-11
HK1067718A1 (en) 2005-04-15
KR20050095884A (en) 2005-10-04
US7217030B2 (en) 2007-05-15
WO2004070478A2 (en) 2004-08-19
WO2004070478A3 (en) 2004-11-25
DE60328353D1 (en) 2009-08-27
KR101016252B1 (en) 2011-02-25
JP2006517294A (en) 2006-07-20
CN100430842C (en) 2008-11-05
US20060050617A1 (en) 2006-03-09
CN1748185A (en) 2006-03-15
JP4334566B2 (en) 2009-09-30

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