EP2110719B1 - Shock absorber for an oscillating mass - Google Patents

Shock absorber for an oscillating mass Download PDF

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Publication number
EP2110719B1
EP2110719B1 EP08154521A EP08154521A EP2110719B1 EP 2110719 B1 EP2110719 B1 EP 2110719B1 EP 08154521 A EP08154521 A EP 08154521A EP 08154521 A EP08154521 A EP 08154521A EP 2110719 B1 EP2110719 B1 EP 2110719B1
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EP
European Patent Office
Prior art keywords
weight
mass
movement
oscillating
plate
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Application number
EP08154521A
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German (de)
French (fr)
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EP2110719A1 (en
Inventor
Raphaël Courvoisier
Alphonse Bron
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Montres Jaquet Droz SA
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Montres Jaquet Droz SA
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Application filed by Montres Jaquet Droz SA filed Critical Montres Jaquet Droz SA
Priority to EP08154521A priority Critical patent/EP2110719B1/en
Priority to AT08154521T priority patent/ATE544098T1/en
Priority to SG200902468-8A priority patent/SG156580A1/en
Priority to CN2009102039664A priority patent/CN101566824B/en
Priority to US12/424,421 priority patent/US7946756B2/en
Priority to JP2009098849A priority patent/JP5284852B2/en
Publication of EP2110719A1 publication Critical patent/EP2110719A1/en
Priority to HK10104021.3A priority patent/HK1138384A1/en
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Publication of EP2110719B1 publication Critical patent/EP2110719B1/en
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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
    • G04B5/18—Supports, suspensions or guide arrangements, for oscillating weights
    • G04B5/19—Suspension of the oscillating weight at its centre of rotation
    • G04B5/195—Suspension of the oscillating weight at its centre of rotation the centre of rotation not being the centre of the clockwork
    • 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
    • G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
    • G04B43/002—Component shock protection arrangements

Definitions

  • the present invention relates to an oscillating mass intended for the automatic winding of a clockwork movement, the mass being pivotally off-center with respect to the center of the movement and being made of a single heavy material.
  • the reassembly is generally ensured by the rotation of an oscillating mass of a radius approximately equal to that of the movement and pivoting in the center and above the latter.
  • the oscillating mass normally consists of two distinct parts: the mass support and the heavy sector.
  • the mass support carries the heavy sector on its periphery and, in its center, is pivoted on a tree which constitutes the suspension of the whole oscillating mass.
  • This support is usually made of brass or nickel silver and is intentionally made flexible so as not to damage the suspension of the oscillating mass in case of shock.
  • the mass support acts as a shock absorber.
  • the heavy sector of a traditional large radius system is the outer part of the oscillating mass and is integral with the mass support to which it is fixed by screwing, riveting or crimping. It is made of fried alloy or precious metal of great density.
  • the elasticity of the mass support is sufficient to protect the system from impact.
  • the displacement of the oscillating mass is limited by the support of the heavy sector on the plate in one direction and the bottom of the box in the other direction.
  • the mass support, often decorated, is not likely to be scratched.
  • the present invention relates to an oscillating weight pivotally off center to the center of the movement, as described for example in the patent application CH 9.431 / 66 , the remedies described to counteract the harmful effects of shocks applied to the timepiece are not suitable, because the radius of the oscillating weight is greatly reduced compared to that of a traditional oscillating weight to form what can be called a micro-rotor.
  • This micro-rotor is integrated in the movement and therefore does not overhang it, which in most cases leads to a decrease in the thickness of the timepiece.
  • the micro-rotor Since the moment of inertia of an oscillating mass depends on its radius, its thickness and its material, the loss generated by the reduction of radius observed on the micro-rotor must be compensated by an increase in its thickness. As a result, the micro-rotor will have a large thickness and will be made of a single block of a single heavy material thus removing the elastic mass support which was discussed above. The system then no longer having the required elasticity, the suspension around which is articulated the micro-rotor undergoes the entire stress caused by a shock applied to the oscillating weight and may be damaged.
  • Part of the shock in question could be compensated by increasing the axial play of the rotor on its shaft, but then the face of the rotor lying opposite the bottom of the timepiece could come into contact with the bottom and be damaged as well as the decoration likely to be affixed to it.
  • the present invention relates to a watch movement defined by claim 1 of the patent.
  • the Figures 1 and 2 are simplified cuts showing a shock absorber. They show an oscillating mass 2 intended for the automatic winding of a clockwork movement 3 which is briefly sketched in figure 5 .
  • the mass 2 is pivotally off-center relative to the center of the movement, is integrated in this movement and is made of a single heavy material.
  • the mass 2 is supported by a shock absorber 1 which is in the form of a plate 4, one end of which is fixed to this plate (at the place marked by an X) and whose other end is fixed or is secured to a tube 5, the latter being arranged to rotate about a shaft 6 constituting the axis 7 of rotation of said mass.
  • the damper 1 which thus preserves the integrity of the shaft 6 around which the mass 2 rotates, the suspension of the mass no longer suffering the totality of the stress caused by this shock and no longer risking being damaged.
  • the left part of the figure 1 presents the oscillating mass 2 in its normal situation, that is to say when the timepiece is not affected by any shock.
  • the right part of the figure 1 presents the situation of the oscillating mass 2 when the timepiece is struck axially in the direction of the arrow A.
  • the mass 2 has collapsed by distance - h relative to its normal position, causing the plate 4 to flex and play its role of shock absorber 1 as shown in FIG. figure 1 .
  • the left part of the figure 2 presents the same oscillating mass 2 in normal situation, the timepiece being affected by no shock.
  • the right part of the figure 2 presents the situation of the mass 2 when the timepiece is struck axially and in the direction of the arrow B, opposite the direction of the arrow A.
  • the mass 2 has risen by a distance + h relative to in its normal position, causing the plate 4 to flex and play again its role of shock absorber 1 as shown in FIG. figure 2 .
  • the plate 4 serving as shock absorber 1 between the oscillating mass 2 and the plate 8 that includes the movement 3. It follows from this provision that the face 23 of the mass 2 which is opposite to that to which is fixed plate 4 is located directly on the bottom that presents the timepiece. This face 23 may be provided with a decoration that can be made visible if the background is a sapphire crystal for example. If the mass 2 is not provided with abutment means to limit axial fretting during impact, its decorated face may come into contact with the bottom and be damaged.
  • Figures 3 and 4 are simplified representations of a principle taken as an example.
  • the figure 3 is a plan view of this embodiment and the figure 4 a section on an enlarged scale along line IV - IV of the figure 3 .
  • the abutment means consist of a groove 15 formed in the oscillating mass 2.
  • this groove 15 penetrates with play a retaining tab 16 which can terminate a limiting bridge 17 as will be apparent on the figure 6 . Games will be calculated from so that the mass 2 never come to touch in case of shock neither the bottom, nor the turntable of the timepiece.
  • the figure 5 is a plan view and the figure 6 an enlarged section on line VI - VI of the figure 5 of a practical and particular embodiment of the present invention.
  • the figure 5 is a partial side view of the timepiece where we see the oscillating mass 2 integrated with the movement 3.
  • the face 23 of the mass 2 can be provided with a decoration and appear through a transparent background.
  • the figure 7 is an exploded perspective view of the mechanism of the present invention and makes it easier to understand the views and Figures 5 and 6 respectively.
  • the plate 4 acting as shock absorber 1 and defined above has the shape of a sector 9 substantially semicircular.
  • This sector 9 is fixed in its peripheral zone 10 to the oscillating mass 2 and in its central zone 11 to the tube 5.
  • the intermediate zone 12 situated between said peripheral and central zones has an elastic medium capable of flexing in the event of impacts on the oscillating weight 2.
  • One way of making the intermediate zone 12 of the sector 9 elastic is to provide voids which allow the arms connecting the central zone 11 to remain at the peripheral zone 10, as is well explained in the disclosure. CH 279 001 cited above. If the thickness of the sector 9 is sufficiently thin the arms will have the desired flexibility.
  • the figure 8 is a plan view of an embodiment of sector 9 presented in perspective on the figure 7 . It can be seen that the intermediate zone 12 comprises three elastic arms 18, 19 and 20 originating in the peripheral zone 10 and moving towards the central zone 11 which surrounds the axis of rotation 7 of the oscillating mass 2.
  • the figure 9 is a plan view of another embodiment of the sector 9 constituting the shock absorber of the present invention.
  • the intermediate zone 12 has only two elastic arms 13 and 14 connecting the peripheral 10 and central 11 zones of the sector 9.
  • the shaft 6 and its axis 7 around which rotates the oscillating mass 2 is integral with the plate 8 of the movement 3 sketched in figure 5 .
  • the mass 2 is supported by the semicircular sector 9.
  • the peripheral zone 10 of this sector 9 is fixed to the mass 2 by means of screws 21.
  • the central zone 11 of this same sector 9 is fixed to the tube 5 by means of 22.
  • the tube 5 rotates freely around the shaft 6.
  • a ball bearing 25 is disposed between the shaft 6 and the tube 5.
  • the ring 26 of the bearing 25 is driven inside the tube 5 and the part central 27 of the same bearing 25 is fitted on the shaft 6 and is held there axially between a shoulder 28 formed on the shaft 6 and a key 29.
  • the tube 5 drives a wheel 30 which is fixed to the tube 5 by the same screws 22 used to attach the sector 9 to the tube 5.
  • the figure 6 shows that the sector 9 is sandwiched between the tube 5 and the wheel 30.
  • the same figure still shows that the wheel 30 drives a first intermediate mobile 31 starting a chain leading to a ratchet to go up.
  • the shaft 32 of this first mobile is pivoted between the plate 8 and a bridge 17 which is extended by the tongue 16 limiting the axial frustum of the mass 2, this tongue being introduced into the throat 15 which was discussed above. .

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Toys (AREA)
  • Vibration Prevention Devices (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Stringed Musical Instruments (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

The weight (2) has a shock absorber in the form of a plate, where one end of the plate is secured to the oscillating weight, and the other end of the plate is fixed to a tube arranged to rotate about an arbor forming an axis of rotation of the oscillating weight. A stop unit is implemented to limit the axial shake of the oscillating weight in the event of any shock, where the stop unit includes a groove, which is penetrated by a retaining tongue that forms an end of a banking bridge.

Description

La présente invention est relative à une masse oscillante destinée au remontage automatique d'un mouvement d'horlogerie, la masse étant à pivotement décentré par rapport au centre du mouvement et étant réalisée en un seul matériau lourd.The present invention relates to an oscillating mass intended for the automatic winding of a clockwork movement, the mass being pivotally off-center with respect to the center of the movement and being made of a single heavy material.

Lorsqu'il s'agit d'une montre à remontage automatique traditionnelle, le remontage est généralement assuré par la rotation d'une masse oscillante d'un rayon approximativement égal à celui du mouvement et pivotant au centre et au dessus de ce dernier. Dans ce cas, la masse oscillante est normalement constituée de deux parties distinctes: le support de masse et le secteur lourd. Le support de masse porte le secteur lourd sur son pourtour et, en son centre, est pivoté sur un arbre qui constitue la suspension de toute la masse oscillante. Ce support est généralement fait en laiton ou en maillechort et est volontairement rendu flexible pour ne pas endommager la suspension de la masse oscillante en cas de choc. Ici le support de masse joue le rôle d'un amortisseur de choc.In the case of a traditional self-winding watch, the reassembly is generally ensured by the rotation of an oscillating mass of a radius approximately equal to that of the movement and pivoting in the center and above the latter. In this case, the oscillating mass normally consists of two distinct parts: the mass support and the heavy sector. The mass support carries the heavy sector on its periphery and, in its center, is pivoted on a tree which constitutes the suspension of the whole oscillating mass. This support is usually made of brass or nickel silver and is intentionally made flexible so as not to damage the suspension of the oscillating mass in case of shock. Here the mass support acts as a shock absorber.

Une manière de rendre flexible le support de masse est décrite dans l'exposé d'invention CH-279 001 . Ici le secteur lourd est supporté par au moins deux bras élastiques, pivotés en un même point du bâti, de manière que les chocs axiaux subis par la masse soient absorbés par l'élasticité de ces bras.One way to make the mass support flexible is described in the disclosure CH-279 001 . Here the heavy sector is supported by at least two resilient arms pivoted at the same point of the frame, so that the axial shocks to the mass are absorbed by the elasticity of these arms.

Le secteur lourd d'un système traditionnel à grand rayon est la partie extérieure de la masse oscillante et est solidaire du support de masse auquel il est fixé par vissage, rivetage ou encore sertissage. Il est constitué d'alliage frité ou de métal précieux de grande masse volumique.The heavy sector of a traditional large radius system is the outer part of the oscillating mass and is integral with the mass support to which it is fixed by screwing, riveting or crimping. It is made of fried alloy or precious metal of great density.

Lors d'un choc de faible intensité, l'élasticité du support de masse suffit à protéger le système de l'impact. En cas de choc de forte intensité, le déplacement de la masse oscillante est limité par l'appui du secteur lourd sur la platine dans un sens et sur le fond de la boîte dans l'autre sens. Le support de masse, souvent décoré, ne risque donc pas d'être rayé.During a low-intensity shock, the elasticity of the mass support is sufficient to protect the system from impact. In case of shock of high intensity, the displacement of the oscillating mass is limited by the support of the heavy sector on the plate in one direction and the bottom of the box in the other direction. The mass support, often decorated, is not likely to be scratched.

On a cependant déjà proposé de limiter l'ébat de la masse par des butées ajustées dans la masse oscillante et présentant des parties arrondies et polies faisant saillie par rapport à la surface de ladite masse, de telle sorte qu'en cas de chocs brusques, cette masse n'arrive pas à toucher le fond de la boîte ni le dessus de la platine. Une telle réalisation est décrite dans le brevet CH-331 275 .However, it has already been proposed to limit the fretting of the mass by stops adjusted in the oscillating mass and having rounded and polished portions protruding from the surface of said mass, so that in case of sudden impacts, this mass can not touch the bottom of the box or the top of the plate. Such an embodiment is described in the patent CH-331 275 .

Comme la présente invention concerne une masse oscillante à pivotement décentré par rapport au centre du mouvement, telle que décrite par exemple dans la demande de brevet CH 9.431/66 , les remèdes décrits pour contrecarrer les effets néfastes des chocs appliqués à la pièce d'horlogerie ne conviennent pas, car le rayon de la masse oscillante est fortement réduit par rapport à celui d'une masse oscillante traditionnelle pour former ce qu'on peut appeler un micro-rotor. Ce micro-rotor est intégré au mouvement et par conséquent ne le surplombe pas, ce qui conduit dans la plupart des cas à une diminution d'épaisseur de la pièce d'horlogerie.As the present invention relates to an oscillating weight pivotally off center to the center of the movement, as described for example in the patent application CH 9.431 / 66 , the remedies described to counteract the harmful effects of shocks applied to the timepiece are not suitable, because the radius of the oscillating weight is greatly reduced compared to that of a traditional oscillating weight to form what can be called a micro-rotor. This micro-rotor is integrated in the movement and therefore does not overhang it, which in most cases leads to a decrease in the thickness of the timepiece.

Etant donné que le moment d'inertie d'une masse oscillante dépend de son rayon, de son épaisseur et de sa matière, la perte engendrée par la réduction de rayon observée sur le micro-rotor doit être compensée par une augmentation de son épaisseur. En conséquence, le micro-rotor va présenter une grande épaisseur et sera réalisé d'un seul bloc en un seul matériau lourd faisant disparaître ainsi le support de masse élastique dont il a été question plus haut. Le système ne présentant alors plus l'élasticité requise, la suspension autour de laquelle est articulé le micro-rotor subit en totalité la contrainte causée par un choc appliqué à la masse oscillante et risque d'être endommagée.Since the moment of inertia of an oscillating mass depends on its radius, its thickness and its material, the loss generated by the reduction of radius observed on the micro-rotor must be compensated by an increase in its thickness. As a result, the micro-rotor will have a large thickness and will be made of a single block of a single heavy material thus removing the elastic mass support which was discussed above. The system then no longer having the required elasticity, the suspension around which is articulated the micro-rotor undergoes the entire stress caused by a shock applied to the oscillating weight and may be damaged.

Une partie du choc en question pourrait être compensé en augmentant le jeu axial du rotor sur son arbre, mais alors la face du rotor se trouvant en regard du fond de la pièce d'horlogerie pourrait entrer en contact avec ce fond et être endommagée ainsi que le décor susceptible d'y être apposé.Part of the shock in question could be compensated by increasing the axial play of the rotor on its shaft, but then the face of the rotor lying opposite the bottom of the timepiece could come into contact with the bottom and be damaged as well as the decoration likely to be affixed to it.

Pour remédier aux inconvénients cités ci-dessus, la présente invention, a pour objet un mouvement d'horlogerie défini par la revendication 1 du brevet.To overcome the drawbacks mentioned above, the present invention relates to a watch movement defined by claim 1 of the patent.

L'invention va être expliquée maintenant en détail ci-dessous au moyen de dessins de principe d'une part et d'autre part au moyen de dessins illustrant un mode de réalisation particulier, ce dernier étant donné à titre d'exemple non limitatif, dessins dans lesquels :

  • la figure 1 est une coupe schématique et simplifiée montrant un amortisseur et son fonctionnement quand un choc axial est appliqué à la masse oscillante dans un sens illustré selon la flèche A.
  • la figure 2 est une coupe schématique et simplifiée montrant un amortisseur et son fonctionnement quand un choc axial est appliqué à la masse oscillante dans un sens illustré selon la flèche B.
  • la figure 3 est une vue en plan schématique et simplifiée de la masse oscillante équipée de l'amortisseur selon l'invention, cette masse présentant des moyens de butée pour limiter son ébat en cas de choc,
  • la figure 4 est une vue en coupe selon la ligne IV - IV de la figure 3,
  • la figure 5 est une vue en plan d'un mode d'exécution particulier de l'invention montrant une partie d'une pièce d'horlogerie dans laquelle est intégrée la masse oscillante et son amortisseur de choc,
  • la figure 6 est une coupe à échelle agrandie selon la ligne VI - VI de la figure 5,
  • la figure 7 est une vue en perspective éclatée de la masse oscillante et de son amortisseur de choc montrés en figure 5,
  • la figure 8 est une vue en plan du mode d'exécution de l'amortisseur présenté en figure 7, et
  • la figure 9 est une vue en plan d'un autre mode d'exécution de l'amortisseur.
The invention will now be explained in detail below by means of drawings of principle on the one hand and on the other hand by means of drawings illustrating a particular embodiment, the latter being given by way of non-limiting example, drawings in which:
  • the figure 1 is a schematic and simplified section showing a shock absorber and its operation when an axial shock is applied to the oscillating mass in a direction illustrated according to the arrow A.
  • the figure 2 is a schematic and simplified section showing a shock absorber and its operation when an axial shock is applied to the oscillating mass in a direction illustrated along arrow B.
  • the figure 3 is a schematic and simplified plan view of the oscillating mass equipped with the damper according to the invention, this mass having stop means for limiting its frolting in case of impact,
  • the figure 4 is a sectional view along line IV - IV of the figure 3 ,
  • the figure 5 is a plan view of a particular embodiment of the invention showing a part of a timepiece in which the oscillating mass and its shock absorber are integrated,
  • the figure 6 is an enlarged section on the line VI - VI of the figure 5 ,
  • the figure 7 is an exploded perspective view of the oscillating mass and its shock absorber shown in FIG. figure 5 ,
  • the figure 8 is a plan view of the mode of execution of the shock absorber presented in figure 7 , and
  • the figure 9 is a plan view of another embodiment of the damper.

Les figures 1 et 2 sont des coupes simplifiées montrant un amortisseur . Elles montrent une masse oscillante 2 destinée au remontage automatique d'un mouvement 3 d'horlogerie lequel est brièvement esquissé en figure 5. La masse 2 est à pivotement décentré par rapport au centre du mouvement, est intégrée à ce mouvement et est réalisée en un seul matériau lourd. Comme le montre bien les figures 1 et 2 et selon une caractéristique importante de l'invention, la masse 2 est supportée par un amortisseur de choc 1 qui se présente sous la forme d'une plaque 4 dont une extrémité est fixée à cette plaque (à l'endroit marqué par un X) et dont une autre extrémité est fixée ou est solidaire d'un tube 5, ce dernier étant arrangé pour tourner autour d'un arbre 6 constituant l'axe 7 de rotation de ladite masse.The Figures 1 and 2 are simplified cuts showing a shock absorber. They show an oscillating mass 2 intended for the automatic winding of a clockwork movement 3 which is briefly sketched in figure 5 . The mass 2 is pivotally off-center relative to the center of the movement, is integrated in this movement and is made of a single heavy material. As shown by the Figures 1 and 2 and according to an important characteristic of the invention, the mass 2 is supported by a shock absorber 1 which is in the form of a plate 4, one end of which is fixed to this plate (at the place marked by an X) and whose other end is fixed or is secured to a tube 5, the latter being arranged to rotate about a shaft 6 constituting the axis 7 of rotation of said mass.

Ainsi, lors d'un choc, ce dernier est absorbé dans sa plus grande partie par l'amortisseur 1, ce qui préserve ainsi l'intégrité de l'arbre 6 autour duquel tourne la masse 2, la suspension de la masse ne subissant plus la totalité de la contrainte provoquée par ce choc et ne risquant plus d'être endommagée.Thus, during an impact, the latter is absorbed in its greater part by the damper 1, which thus preserves the integrity of the shaft 6 around which the mass 2 rotates, the suspension of the mass no longer suffering the totality of the stress caused by this shock and no longer risking being damaged.

La partie gauche de la figure 1 présente la masse oscillante 2 dans sa situation normale, c'est-à-dire quand la pièce d'horlogerie n'est affectée d'aucun choc. La partie droite de la figure 1 présente la situation de la masse oscillante 2 lorsque la pièce d'horlogerie subit un choc dirigé axialement dans le sens de la flèche A. La masse 2 s'est affaissée d'une distance - h par rapport à sa position normale, amenant la plaque 4 à fléchir et à jouer son rôle d'amortisseur 1 comme le montre la figure 1.The left part of the figure 1 presents the oscillating mass 2 in its normal situation, that is to say when the timepiece is not affected by any shock. The right part of the figure 1 presents the situation of the oscillating mass 2 when the timepiece is struck axially in the direction of the arrow A. The mass 2 has collapsed by distance - h relative to its normal position, causing the plate 4 to flex and play its role of shock absorber 1 as shown in FIG. figure 1 .

La partie gauche de la figure 2 présente la même masse oscillante 2 en situation normale, la pièce d'horlogerie n'étant affectée d'aucun choc. La partie droite de la figure 2 présente la situation de la masse 2 lorsque la pièce d'horlogerie subit un choc dirigé axialement et dans le sens de la flèche B, opposé au sens de la flèche A. La masse 2 s'est soulevée d'une distance + h par rapport à sa position normale, amenant la plaque 4 à fléchir et à jouer à nouveau son rôle d'amortisseur 1 comme le montre la figure 2.The left part of the figure 2 presents the same oscillating mass 2 in normal situation, the timepiece being affected by no shock. The right part of the figure 2 presents the situation of the mass 2 when the timepiece is struck axially and in the direction of the arrow B, opposite the direction of the arrow A. The mass 2 has risen by a distance + h relative to in its normal position, causing the plate 4 to flex and play again its role of shock absorber 1 as shown in FIG. figure 2 .

Dans les deux cas de figures, on remarquera que le tube 5 ne subit aucun déplacement axial lors de chocs, retenu qu'il est par construction et comme on le verra à propos de la figure 6.In both cases, it will be noted that the tube 5 undergoes no axial displacement during shocks, retained that it is by construction and as will be seen in connection with the figure 6 .

Comme on le verra également en figure 6, on préférera disposer la plaque 4 servant d'amortisseur de choc 1 entre la masse oscillante 2 et la platine 8 que comporte le mouvement 3. Il résulte de cette disposition que la face 23 de la masse 2 qui est opposée à celle à laquelle est fixée la plaque 4 se trouve située directement sur le fond que présente la pièce d'horlogerie. Cette face 23 peut être munie d'un décor qui peut être rendu visible si le fond est une glace saphir par exemple. Si la masse 2 n'est pas munie de moyens de butée pour limiter son ébat axial lors d'un choc, sa face décorée peut entrer en contact avec le fond et être ainsi endommagée.As will also be seen in figure 6 it is preferred to have the plate 4 serving as shock absorber 1 between the oscillating mass 2 and the plate 8 that includes the movement 3. It follows from this provision that the face 23 of the mass 2 which is opposite to that to which is fixed plate 4 is located directly on the bottom that presents the timepiece. This face 23 may be provided with a decoration that can be made visible if the background is a sapphire crystal for example. If the mass 2 is not provided with abutment means to limit axial fretting during impact, its decorated face may come into contact with the bottom and be damaged.

Un mode de réalisation possible pour limiter l'ébat en question est montré en figures 3 et 4 qui sont des représentations simplifiées d'un principe pris en exemple. La figure 3 est une vue en plan de ce mode de réalisation et la figure 4 une coupe à échelle agrandie selon la ligne IV - IV de la figure 3. Dans ces figures, les moyens de butée consistent en une gorge 15 pratiquée dans la masse oscillante 2. Dans cette gorge 15 pénètre avec jeu une languette 16 de retenue qui peut terminer un pont de limitation 17 comme cela sera apparent sur la figure 6. Les jeux seront calculés de façon à ce que la masse 2 ne vienne jamais toucher en cas de choc ni le fond, ni la platine de la pièce d'horlogerie.One possible embodiment for limiting the lump in question is shown in Figures 3 and 4 which are simplified representations of a principle taken as an example. The figure 3 is a plan view of this embodiment and the figure 4 a section on an enlarged scale along line IV - IV of the figure 3 . In these figures, the abutment means consist of a groove 15 formed in the oscillating mass 2. In this groove 15 penetrates with play a retaining tab 16 which can terminate a limiting bridge 17 as will be apparent on the figure 6 . Games will be calculated from so that the mass 2 never come to touch in case of shock neither the bottom, nor the turntable of the timepiece.

La figure 5 est une vue en plan et la figure 6 une coupe à échelle agrandie selon la ligne VI - VI de la figure 5 d'un mode d'exécution pratique et particulier de la présente invention. La figure 5 est une vue partielle côté fond de la pièce d'horlogerie où l'on voit la masse oscillante 2 intégrée au mouvement 3. La face 23 de la masse 2 peut être munie d'un décor et apparaître à travers un fond transparent. La figure 7 est une vue en perspective éclatée du mécanisme objet de la présente invention et fait mieux comprendre les vue et coupe des figures 5 et 6 respectives.The figure 5 is a plan view and the figure 6 an enlarged section on line VI - VI of the figure 5 of a practical and particular embodiment of the present invention. The figure 5 is a partial side view of the timepiece where we see the oscillating mass 2 integrated with the movement 3. The face 23 of the mass 2 can be provided with a decoration and appear through a transparent background. The figure 7 is an exploded perspective view of the mechanism of the present invention and makes it easier to understand the views and Figures 5 and 6 respectively.

Dans cette exécution particulière, la plaque 4 jouant le rôle d'amortisseur de choc 1 et définie plus haut présente la forme d'un secteur 9 sensiblement semi-circulaire. Ce secteur 9 est fixé dans sa zone périphérique 10 à la masse oscillante 2 et dans sa zone centrale 11 au tube 5. La zone intermédiaire 12 située entre lesdites zones périphérique et centrale présente un milieu élastique susceptible de fléchir en cas de chocs portés sur la masse oscillante 2.In this particular embodiment, the plate 4 acting as shock absorber 1 and defined above has the shape of a sector 9 substantially semicircular. This sector 9 is fixed in its peripheral zone 10 to the oscillating mass 2 and in its central zone 11 to the tube 5. The intermediate zone 12 situated between said peripheral and central zones has an elastic medium capable of flexing in the event of impacts on the oscillating weight 2.

Une manière de rendre élastique la zone intermédiaire 12 du secteur 9 est d'y pourvoir des vides laissant subsister des bras reliant la zone centrale 11 à la zone périphérique 10 comme cela est bien explicité dans l'exposé d'invention CH 279 001 cité plus haut. Si l'épaisseur du secteur 9 est suffisamment mince les bras présenteront la flexibilité voulue.One way of making the intermediate zone 12 of the sector 9 elastic is to provide voids which allow the arms connecting the central zone 11 to remain at the peripheral zone 10, as is well explained in the disclosure. CH 279 001 cited above. If the thickness of the sector 9 is sufficiently thin the arms will have the desired flexibility.

La figure 8 est une vue en plan d'un mode d'exécution du secteur 9 présenté en perspective sur la figure 7. On voit que la zone intermédiaire 12 comporte trois bras élastiques 18, 19 et 20 prenant naissance dans la zone périphérique 10 et se dirigeant vers la zone centrale 11 qui entoure l'axe de rotation 7 de la masse oscillante 2.The figure 8 is a plan view of an embodiment of sector 9 presented in perspective on the figure 7 . It can be seen that the intermediate zone 12 comprises three elastic arms 18, 19 and 20 originating in the peripheral zone 10 and moving towards the central zone 11 which surrounds the axis of rotation 7 of the oscillating mass 2.

La figure 9 est une vue en plan d'un autre mode d'exécution du secteur 9 constituant l'amortisseur de choc de la présente invention. Ici la zone intermédiaire 12 ne comporte que deux bras élastiques 13 et 14 reliant les zones périphérique 10 et centrale 11 du secteur 9.The figure 9 is a plan view of another embodiment of the sector 9 constituting the shock absorber of the present invention. Here the intermediate zone 12 has only two elastic arms 13 and 14 connecting the peripheral 10 and central 11 zones of the sector 9.

Pour terminer cette description, on reviendra sur la coupe de la figure 6 à laquelle on associera la perspective de la figure 7.To finish this description, we will come back to the section of the figure 6 to which we will associate the perspective of figure 7 .

L'arbre 6 et son axe 7 autour duquel tourne la masse oscillante 2 est solidaire de la platine 8 du mouvement 3 esquissé en figure 5. La masse 2 est supportée par le secteur semi-circulaire 9. La zone périphérique 10 de ce secteur 9 est fixée à la masse 2 au moyen de vis 21. La zone centrale 11 de ce même secteur 9 est fixée au tube 5 au moyen de vis 22. Le tube 5 tourne librement autour de l'arbre 6. Un roulement à billes 25 est disposé entre l'arbre 6 et le tube 5. La couronne 26 du roulement 25 est chassée à l'intérieur du tube 5 et la partie centrale 27 du même roulement 25 est ajusté sur l'arbre 6 et y est maintenue axialement entre un épaulement 28 pratiqué sur l'arbre 6 et une clavette 29. Le tube 5 entraîne une roue 30 qui est fixée au tube 5 par les mêmes vis 22 utilisées pour fixer le secteur 9 audit tube 5. La figure 6 montre que le secteur 9 est pris en sandwich entre le tube 5 et la roue 30. La même figure montre encore que la roue 30 entraîne un premier mobile intermédiaire 31 débutant une chaîne aboutissant à un rochet à remonter. L'arbre 32 de ce premier mobile est pivoté entre la platine 8 et un pont 17 qui est prolongé par la languette 16 limitant l'ébat axial de la masse 2, cette languette étant introduite dans la gorge 15 dont il a été question plus haut.The shaft 6 and its axis 7 around which rotates the oscillating mass 2 is integral with the plate 8 of the movement 3 sketched in figure 5 . The mass 2 is supported by the semicircular sector 9. The peripheral zone 10 of this sector 9 is fixed to the mass 2 by means of screws 21. The central zone 11 of this same sector 9 is fixed to the tube 5 by means of 22. The tube 5 rotates freely around the shaft 6. A ball bearing 25 is disposed between the shaft 6 and the tube 5. The ring 26 of the bearing 25 is driven inside the tube 5 and the part central 27 of the same bearing 25 is fitted on the shaft 6 and is held there axially between a shoulder 28 formed on the shaft 6 and a key 29. The tube 5 drives a wheel 30 which is fixed to the tube 5 by the same screws 22 used to attach the sector 9 to the tube 5. The figure 6 shows that the sector 9 is sandwiched between the tube 5 and the wheel 30. The same figure still shows that the wheel 30 drives a first intermediate mobile 31 starting a chain leading to a ratchet to go up. The shaft 32 of this first mobile is pivoted between the plate 8 and a bridge 17 which is extended by the tongue 16 limiting the axial frustum of the mass 2, this tongue being introduced into the throat 15 which was discussed above. .

Claims (4)

  1. Horological movement (3) including an oscillating weight (2) for automatically winding a timepiece movement (3), the weight being arranged to be pivoted off-centre relative to the centre of the movement, said weight being made of a single heavy material, and carried by a shock absorber (1) that takes the form of a flexible plate (4) one end of which is secured to said weight, and the other end of which is fixed to a tube (5) arranged to rotate about an arbour (6) forming the axis of rotation (7) of said oscillating weight, characterized in that stop means are implemented to limit the axial shake of said weight (2) in the event of any shock, said stop means consisting of a groove (15), which is made in said weight (2), and which is penetrated by a retaining tongue (16) that forms the end of a banking bridge (17).
  2. Horological movement (3) according to claim 1, characterized in that the plate (4) is arranged between said weight (2) and the plate (8) of the movement.
  3. Horological movement (3) according to claim 1, characterized in that the plate (4) takes the form of an approximately semi-circular sector (9), the peripheral zone (10) of which is secured to the oscillating weight (2) and the central zone (11) of which is secured to the tube (5), the intermediate zone (12) located between said peripheral and central zones having a resilient middle that can bend in the event of any shock applied to the oscillating weight (2).
  4. Horological movement (3) according to claim 5, characterized in that the intermediate zone (12) has at least two resilient arms (13, 14) directed towards the axis of rotation (7) of the oscillating weight (2).
EP08154521A 2008-04-15 2008-04-15 Shock absorber for an oscillating mass Active EP2110719B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP08154521A EP2110719B1 (en) 2008-04-15 2008-04-15 Shock absorber for an oscillating mass
AT08154521T ATE544098T1 (en) 2008-04-15 2008-04-15 SHOCK ABSORBER FOR FLYWHAT
SG200902468-8A SG156580A1 (en) 2008-04-15 2009-04-09 Shock absorber for the oscillating weight of a timepiece
US12/424,421 US7946756B2 (en) 2008-04-15 2009-04-15 Shock absorber for the oscillating weight of a timepiece
CN2009102039664A CN101566824B (en) 2008-04-15 2009-04-15 Shock absorber for the oscillating weight of a timepiece
JP2009098849A JP5284852B2 (en) 2008-04-15 2009-04-15 Seismic device for watch weight
HK10104021.3A HK1138384A1 (en) 2008-04-15 2010-04-23 Shock absorber for the oscillating weight of a timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08154521A EP2110719B1 (en) 2008-04-15 2008-04-15 Shock absorber for an oscillating mass

Publications (2)

Publication Number Publication Date
EP2110719A1 EP2110719A1 (en) 2009-10-21
EP2110719B1 true EP2110719B1 (en) 2012-02-01

Family

ID=40139242

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08154521A Active EP2110719B1 (en) 2008-04-15 2008-04-15 Shock absorber for an oscillating mass

Country Status (7)

Country Link
US (1) US7946756B2 (en)
EP (1) EP2110719B1 (en)
JP (1) JP5284852B2 (en)
CN (1) CN101566824B (en)
AT (1) ATE544098T1 (en)
HK (1) HK1138384A1 (en)
SG (1) SG156580A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE545071T1 (en) * 2009-03-23 2012-02-15 Montres Breguet Sa MOVEMENT WITH TOURBILLON EQUIPPED WITH A SHOCKPROOF PROTECTION DEVICE
EP2799937B1 (en) * 2013-05-01 2020-09-16 Rolex Sa Shock-proof bearing for an horological balance
EP3021173B1 (en) * 2014-11-14 2017-05-24 Blancpain S.A. Annular oscillating mass and timepiece comprising such an oscillating mass
CH712163A1 (en) 2016-02-16 2017-08-31 Mps Micro Prec Systems Ag Ball bearing and coupling system comprising such a ball bearing.
JP1605098S (en) * 2016-11-29 2018-05-28
CH716153B1 (en) * 2019-05-07 2022-12-30 Richemont Int Sa Oscillating weight for a timepiece.
USD1012749S1 (en) * 2022-03-10 2024-01-30 Richemont International Sa Micro rotor set for a watch dial

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CH160803A (en) * 1932-01-14 1933-03-31 Societe Anonyme Fabriqu Aegler Self-winding timepiece.
US2399131A (en) * 1942-07-09 1946-04-23 Michel S A Grenchen A Automatic winding mechanism for timepieces
CH279001A (en) 1949-08-10 1951-11-15 Rolex Montres Self-winding timepiece by moving mass.
DE1628890U (en) * 1950-10-16 1951-10-04 Helmut Junghans Und Gebrueder INDEPENDENT WINDING DEVICE FOR WATCHES.
FR1056443A (en) * 1951-05-10 1954-02-26 Eterna Further development of oscillating masses for self-winding watches and method of manufacturing these improved oscillating masses
CH331275A (en) 1956-11-19 1958-07-15 Omega Brandt & Freres Sa Louis Self-winding rotor watch
US3006138A (en) * 1958-06-04 1961-10-31 Rene A Fiechter Automatic self-winding watch
CH1034361A4 (en) * 1961-09-06 1963-05-31
CH478426A (en) * 1966-07-11 1969-05-30 Tissot Horlogerie Self-winding timepiece
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JPS5225771U (en) * 1975-08-13 1977-02-23
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JPH0391992U (en) * 1990-01-09 1991-09-19
CH692874A5 (en) * 1997-11-20 2002-11-29 Ebauchesfabrik Eta Ag Instrument of small volume provided with a limiting device of the mechanical power supplied by an oscillating weight.
EP1085383B1 (en) * 1999-09-17 2009-01-21 ETA SA Manufacture Horlogère Suisse Anti-shock device for a power generator driven by an oscillating weight
JP3832270B2 (en) * 2001-04-13 2006-10-11 セイコーエプソン株式会社 Clock with eccentric weight
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EP1445668B1 (en) * 2003-02-04 2009-07-15 Vaucher Manufacture Fleurier SA Oscillating weight
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Also Published As

Publication number Publication date
JP2009258110A (en) 2009-11-05
US20090257322A1 (en) 2009-10-15
CN101566824B (en) 2012-01-11
JP5284852B2 (en) 2013-09-11
ATE544098T1 (en) 2012-02-15
HK1138384A1 (en) 2010-08-20
EP2110719A1 (en) 2009-10-21
CN101566824A (en) 2009-10-28
SG156580A1 (en) 2009-11-26
US7946756B2 (en) 2011-05-24

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