EP3428737B1 - Oscillating winding mass for timepiece with automatic movement, and timepiece equipped with such a winding mass - Google Patents

Oscillating winding mass for timepiece with automatic movement, and timepiece equipped with such a winding mass Download PDF

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Publication number
EP3428737B1
EP3428737B1 EP17180736.5A EP17180736A EP3428737B1 EP 3428737 B1 EP3428737 B1 EP 3428737B1 EP 17180736 A EP17180736 A EP 17180736A EP 3428737 B1 EP3428737 B1 EP 3428737B1
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EP
European Patent Office
Prior art keywords
movement
connecting element
timepiece
winding weight
winding
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.)
Active
Application number
EP17180736.5A
Other languages
German (de)
French (fr)
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EP3428737A1 (en
Inventor
Yassine Rachdi
Julien Huser
Ambre Coffin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP17180736.5A priority Critical patent/EP3428737B1/en
Priority to JP2018122736A priority patent/JP6691938B2/en
Priority to US16/022,907 priority patent/US20190018367A1/en
Priority to CN201821084860.8U priority patent/CN208588904U/en
Priority to CN201810749566.2A priority patent/CN109240067B/en
Publication of EP3428737A1 publication Critical patent/EP3428737A1/en
Application granted granted Critical
Publication of EP3428737B1 publication Critical patent/EP3428737B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • 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
    • 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
    • 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
    • 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
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/0007—Light-, colour-, line-, or spot-effects caused by parts or pictures moved by 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
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/02—Time pieces of which the clockwork is visible partly or wholly
    • 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
    • G04B5/10—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is not limited
    • 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

Definitions

  • the present invention relates to an oscillating winding mass of a movement of a timepiece with automatic movement. More particularly, the invention relates to such a winding mass intended to equip a wristwatch comprising a transparent case back, said weight being arranged on the side of the case back and allowing the entire movement to be observed at all times.
  • Wristwatches are already known which have cases with a transparent bottom to allow their movement to be observed.
  • these watches include a self-winding movement, the observation of the movement is always truncated by the presence of the oscillating winding mass which, even perforated, as is the case in so-called "skeleton" watches, prevents a comfortable observation of movement.
  • an oscillating winding mass comprising a heavy part fixed to a connecting member arranged to connect said heavy part to an axis integral with a movement, said connecting member being made of a transparent or translucent material.
  • Such an oscillating winding weight allows observation of the movement it equips without any visible obstacle.
  • certain elements of the movement which appear through the oscillating winding weight and the back The transparencies of the watch have their usual metallic appearance, while the rest of the watch can be very colorful.
  • fixed elements of the frame of the movement can be colored without difficulty, it is not the same for mobile elements of the train, such as the elements of the finishing train, of the escapement or of the oscillator. It is complex to give a color to these mobile elements. Indeed, the application of a colored film for example would not make it possible to guarantee the functionality of these elements which require great precision and the least possible friction to function correctly.
  • the document WO 2014/122296 describes a timepiece comprising at least one colored transparent stone and a support comprising at least one opening for receiving this colored transparent stone, the support being made of anodized titanium or anodized aluminum.
  • the coloring of the colored transparent stone is reinforced by that of the support.
  • the object of the present invention is to remedy the drawbacks of the prior art by proposing an oscillating winding mass for a timepiece making it possible to give the elements of the movement which it equips a color without harming the functionality of these elements.
  • the invention relates to an oscillating winding mass for a movement of a timepiece comprising a heavy part fixed to a connecting member intended to connect said heavy part to an axis integral with the movement, said mass being intended to be mounted for rotation on said axis, said connecting member being made of a transparent or translucent material.
  • said connecting member comprises at least one colored filter, said colored filter consisting of a transparent colored film or translucent deposited on at least part of the surface of the connecting member.
  • Said color filter can occupy at least part of the surface of the connecting member.
  • the colored filter occupies the entire surface of the connecting member and is preferably constituted by a colored component provided in the mass of the transparent or translucent material.
  • the invention also relates to a timepiece comprising a case formed of a middle part closed by a crystal and an at least partially transparent back and in which is housed a self-winding timepiece movement, said movement being equipped with an oscillating winding mass as defined above.
  • FIG. 1 a first embodiment of an oscillating winding mass according to the invention, designated by the general reference 1.
  • This mass is intended to conventionally equip the automatic winding movement of a timepiece (not shown) and comprising in particular a case formed of a middle part closed by a crystal and an at least partially transparent back to make the movement visible from the back.
  • the winding mass 1 comprises a heavy part 2 fixed to a connecting member 4 intended to connect the heavy part to an axis (not shown) integral with a clockwork movement, the mass 1 being intended to be mounted for rotation on this axis.
  • the connecting member has in its center an opening 6 in which is driven a ring 8 forming the hub of the mass 1.
  • the connecting member 4 is formed by a solid disc made of a transparent material such as sapphire, which makes it possible to observe the movement through the mass 1.
  • sapphire in a winding mass as a connecting member between the heavy part and the movement goes against the prejudices of the skilled person who, when he has to design a winding mass, always tends to use materials having a large tenacity, that is to say good capacities to absorb the shocks to which the mass is subjected during its rotation.
  • any other transparent or translucent, synthetic or natural material can be used.
  • a polycarbonate suitable for this application can be used. In all cases, the material must at least allow the passage of light to be able to distinguish the shapes of the elements behind it.
  • the heavy part 2 comprises a ring 10 which comprises on an arc of a circle of approximately 180 ° an unbalance 12 which is formed by an extra thickness of said ring 10.
  • the ring 10 and the unbalance 12 are produced in one piece.
  • the heavy part 2 is made of a high density metal, for example, a tungsten alloy.
  • the unbalance 12 can be attached to the ring 10 by any conventional fixing means such as screwing, gluing, crimping, welding or the like.
  • the ring 10 can be made of an easily machinable material such as steel, and the unbalance 12 of a tungsten alloy.
  • the ring 10 comprises a rebate 14 in which the disc 4 is engaged and glued.
  • this disc 4 can be fixed in the rebate 14 of the ring 10 by any other conventional fixing means such as screwing, riveting or the like.
  • the ring 10 has a decoration on its external surface, that is to say visible from the back of the watch. This decoration preferably occupies the entire visible external surface of the ring.
  • the connecting member 4 can include at least one colored filter 30 which occupies the entire surface of the connecting member 4.
  • the color filter may occupy only part of the surface of the connecting member.
  • the colored filter may be in the form of a strip, of a continuous or discontinuous ring, provided on the connecting member substantially at the level of the visible elements of the movement to which it is desired to give a colored appearance, at least temporarily, depending on the rotational movement of the oscillating winding weight.
  • said colored filter 30 may consist of a colored component provided in the mass of the transparent or translucent material.
  • a colored component provided in the mass of the transparent or translucent material.
  • use will be made of a dye, a pigment or a mixture of dyes or pigments, diffused in the mass of the transparent or translucent material. This embodiment will be particularly preferred when the color filter occupies the entire surface of the connecting member.
  • the mass-dyed connecting member 4 can for example be obtained from a compound comprising polycarbonate, a pigment or a mixture of pigments and a dispersing agent. This compound is then injected to obtain the binding member 4. It is also possible to directly use a pigment in liquid form. Any pigment compatible with the transparent or translucent material to dye it in the mass can be used.
  • the colored filter consists of a transparent or translucent colored film deposited on at least part of the surface of the connecting member 4.
  • a film can be a varnish or an ink. It can be deposited on the internal (movement side) or external (bottom side) surface of the connecting member 4.
  • This embodiment can be implemented to form a colored filter which occupies all or part of the surface of the connection. liaison body.
  • At least one element of the movement at least partially visible from the bottom of the movement and which can be at least partially seen through the color filter has a neutral color, for example gray, with a matt effect.
  • This neutral color is chosen so as not to reduce, or reduce as little as possible, the effect of the color filter.
  • the link member 4 acts as a colored filter and allows to give the illusion that the elements visible from the background of the movement are colored, of a different color from their real color.
  • the invention therefore makes it possible to give the elements visible from the background of the movement a color different from their natural color, without impairing their functionality.
  • the effect of the colored appearance given to the elements visible from the background of the movement is permanent or temporary but repeated according to the rotational movement of the oscillating winding weight.
  • FIG 3 there is shown a second embodiment of an oscillating winding mass 1 according to the invention.
  • the elements identical to those described in connection with the figures 1 and 2 have been designated by the same reference numerals.
  • the ring 8 forming the hub of the mass 1 has been omitted on the figure 3 .
  • the connecting member 4 of this embodiment is formed of a partially hollowed disc also made of sapphire. More precisely, the connecting member 4 comprises a central part 16 provided with the opening 6 and a peripheral ring 18 concentric with the opening 6, the central part 16 being connected to the peripheral ring 18 by three connecting arms 20
  • the recesses of the disc 4 will advantageously be made using diamond grinding wheels or even using a laser beam.
  • the connecting member 4 is dyed in the mass in order to form a colored filter 30.
  • FIG 4 there is shown a third embodiment of an oscillating winding mass 1 according to the invention in which the connecting member 4 is formed of a circular optical magnifying lens tinted in the mass in order to form a colored filter 30. It is shown. It goes without saying that according to variant embodiments, any other type of optical lens can be envisaged. It is possible in particular to provide Fresnel lenses which have the particularity of being flatter than a conventional lens for a given magnification. It would also be possible to envisage using, for these connecting members 4, lenses producing kaleidoscopic effects.
  • FIG. 5 and 6 there is shown a fourth embodiment of an oscillating winding mass 1 of the invention in which the connecting member 4 is formed of a transparent plate shaped as an angular sector extending over approximately 180 ° and in which the heavy part 2 is formed by a ring part extending to the periphery of the plate 4 on an arc of a circle of about 180 °.
  • the plate 4 is made of sapphire tinted in the mass in order to form a colored filter 30 and further comprises a magnifying optical lens 22 which extends radially from the ring 8 to the ring of the heavy part 2.
  • FIG. 7 there is shown a fifth embodiment of an oscillating winding mass 1 according to the invention in which the connecting member 4 is formed of a transparent plate tinted in the mass in order to form a colored filter 30, in the form of a angular sector extending over approximately 180 ° and comprising at its periphery a flange 24 folded at an angle.
  • the heavy part 2 is also formed by a ring part extending over an arc of a circle of approximately 180 ° and fixed by means of screws 26 on the inner face 28 of the rim 24.
  • this embodiment of the winding mass 1 allows, thanks to its folded rim 24, to best adapt to the external shape of the movement that it is intended to equip, it being understood that the rim 24 is folded in the direction of the movement.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Toys (AREA)

Description

Domaine de l'inventionField of the invention

La présente invention concerne une masse de remontage oscillante d'un mouvement d'une pièce d'horlogerie à mouvement automatique. Plus particulièrement, l'invention concerne une telle masse de remontage destinée à équiper une montre-bracelet comportant un fond transparent, ladite masse étant aménagée du côté du fond de la boîte et permettant l'observation de la totalité du mouvement en permanence.The present invention relates to an oscillating winding mass of a movement of a timepiece with automatic movement. More particularly, the invention relates to such a winding mass intended to equip a wristwatch comprising a transparent case back, said weight being arranged on the side of the case back and allowing the entire movement to be observed at all times.

Arrière-plan de l'inventionBackground of the invention

On connait déjà des montres-bracelets présentant des boîtes à fond transparent pour permettre l'observation de leur mouvement. Toutefois, lorsque ces montres comportent un mouvement à remontage automatique, l'observation du mouvement est toujours tronquée par la présence de la masse de remontage oscillante qui, même ajourée, comme c'est le cas dans les montres dites "squelettes", empêche une observation confortable du mouvement.Wristwatches are already known which have cases with a transparent bottom to allow their movement to be observed. However, when these watches include a self-winding movement, the observation of the movement is always truncated by the presence of the oscillating winding mass which, even perforated, as is the case in so-called "skeleton" watches, prevents a comfortable observation of movement.

Pour résoudre ce problème, il a été proposé dans le brevet EP 0 957 414 une masse de remontage oscillante comprenant une partie pesante fixée à un organe de liaison agencé pour relier ladite partie pesante à un axe solidaire d'un mouvement, ledit organe de liaison étant réalisé en un matériau transparent ou translucide. Une telle masse de remontage oscillante permet une observation du mouvement qu'elle équipe sans aucun obstacle visible. Toutefois, certains éléments du mouvement qui apparaissent au travers de la masse de remontage oscillante et du fond transparents de la montre présentent leur aspect usuel métallique alors que le reste de la montre peut être très coloré. Si des éléments fixes du bâti du mouvement peuvent être colorés sans difficulté, il n'en est pas de même pour des éléments mobiles du rouage, tels que les éléments du rouage de finissage, de l'échappement ou de l'oscillateur. Il est complexe de donner une couleur à ces éléments mobiles. En effet, l'application d'un film coloré par exemple ne permettrait pas de garantir la fonctionnalité de ces éléments qui nécessitent une grande précision et le moins de frottement possible pour fonctionner correctement.To solve this problem, it has been proposed in the patent EP 0 957 414 an oscillating winding mass comprising a heavy part fixed to a connecting member arranged to connect said heavy part to an axis integral with a movement, said connecting member being made of a transparent or translucent material. Such an oscillating winding weight allows observation of the movement it equips without any visible obstacle. However, certain elements of the movement which appear through the oscillating winding weight and the back The transparencies of the watch have their usual metallic appearance, while the rest of the watch can be very colorful. If fixed elements of the frame of the movement can be colored without difficulty, it is not the same for mobile elements of the train, such as the elements of the finishing train, of the escapement or of the oscillator. It is complex to give a color to these mobile elements. Indeed, the application of a colored film for example would not make it possible to guarantee the functionality of these elements which require great precision and the least possible friction to function correctly.

Le document WO 2014/122296 décrit une pièce d'horlogerie comprenant au moins une pierre transparente colorée et un support comprenant au moins une ouverture pour recevoir cette pierre transparente colorée, le support étant réalisé en titane anodisé ou en aluminium anodisé. Avantageusement, dans la pièce, la coloration de la pierre transparente colorée est renforcée par celle du support.The document WO 2014/122296 describes a timepiece comprising at least one colored transparent stone and a support comprising at least one opening for receiving this colored transparent stone, the support being made of anodized titanium or anodized aluminum. Advantageously, in the room, the coloring of the colored transparent stone is reinforced by that of the support.

Résumé de l'inventionSummary of the invention

La présente invention a pour but de remédier aux inconvénients de l'art antérieur en proposant une masse de remontage oscillante pour pièce d'horlogerie permettant de donner aux éléments du mouvement qu'elle équipe une couleur sans nuire à la fonctionnalité de ces éléments.The object of the present invention is to remedy the drawbacks of the prior art by proposing an oscillating winding mass for a timepiece making it possible to give the elements of the movement which it equips a color without harming the functionality of these elements.

A cet effet, l'invention a pour objet une masse de remontage oscillante pour un mouvement d'une pièce d'horlogerie comprenant une partie pesante fixée à un organe de liaison destiné à relier ladite partie pesante à un axe solidaire du mouvement, ladite masse étant destinée à être montée à rotation sur ledit axe, ledit organe de liaison étant réalisé en un matériau transparent ou translucide.To this end, the invention relates to an oscillating winding mass for a movement of a timepiece comprising a heavy part fixed to a connecting member intended to connect said heavy part to an axis integral with the movement, said mass being intended to be mounted for rotation on said axis, said connecting member being made of a transparent or translucent material.

Selon l'invention, ledit organe de liaison comprend au moins un filtre coloré, ledit filtre coloré étant constitué par un film coloré transparent ou translucide déposé sur au moins une partie de la surface de l'organe de liaison.According to the invention, said connecting member comprises at least one colored filter, said colored filter consisting of a transparent colored film or translucent deposited on at least part of the surface of the connecting member.

Grâce à cette nouvelle structure de masse de remontage, il est possible de rendre visible en permanence la totalité du mouvement de la pièce d'horlogerie qu'elle équipe, et de donner aux éléments visibles du mouvement une apparence colorée, de couleur différente de leur couleur réelle, ce qui confère à la pièce d'horlogerie un aspect esthétique amélioré, sans nuire à la fonctionnalité de ses éléments.Thanks to this new winding mass structure, it is possible to make the entire movement of the timepiece it equips permanently visible, and to give the visible elements of the movement a colored appearance, of a different color from their real color, which gives the timepiece an improved aesthetic appearance, without compromising the functionality of its elements.

Ledit filtre coloré peut occuper au moins une partie de la surface de l'organe de liaison.Said color filter can occupy at least part of the surface of the connecting member.

Selon un mode de réalisation ne faisant pas partie de l'invention, le filtre coloré occupe toute la surface de l'organe de liaison et est de préférence constitué par un composant coloré prévu dans la masse du matériau transparent ou translucide.According to an embodiment not forming part of the invention, the colored filter occupies the entire surface of the connecting member and is preferably constituted by a colored component provided in the mass of the transparent or translucent material.

Selon un autre aspect, l'invention a également pour objet une pièce d'horlogerie comportant une boîte formée d'une carrure fermée par une glace et un fond au moins partiellement transparent et dans laquelle est logé un mouvement d'horlogerie à remontage automatique, ledit mouvement étant équipé d'une masse de remontage oscillante telle que définie ci-dessus.According to another aspect, the invention also relates to a timepiece comprising a case formed of a middle part closed by a crystal and an at least partially transparent back and in which is housed a self-winding timepiece movement, said movement being equipped with an oscillating winding mass as defined above.

Description sommaire des dessinsBrief description of the drawings

D'autres détails de l'invention apparaîtront plus clairement à la lecture de la description qui suit, faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en plan d'un premier mode de réalisation d'une masse de remontage oscillante selon l'invention;
  • la figure 2 est une coupe selon la ligne II-II de la figure 1 ;
  • la figure 3 est une vue en plan d'un deuxième de mode réalisation d'une masse de remontage oscillante selon l'invention;
  • la figure 4 est une coupe, similaire à celle représentée à la figure 2, d'un troisième mode de réalisation selon l'invention;
  • la figure 5 est une vue en plan d'un quatrième mode de réalisation d'une masse de remontage oscillante selon l'invention;
  • la figure 6 est une coupe partielle selon la ligne VI-VI de la figure 5; et
  • la figure 7 est une coupe d'un cinquième mode de réalisation selon l'invention.
Other details of the invention will emerge more clearly on reading the description which follows, given with reference to the appended drawings in which:
  • the figure 1 is a plan view of a first embodiment of an oscillating winding mass according to the invention;
  • the figure 2 is a section along line II-II of the figure 1 ;
  • the figure 3 is a plan view of a second embodiment of an oscillating winding mass according to the invention;
  • the figure 4 is a section, similar to the one shown in figure 2 , of a third embodiment according to the invention;
  • the figure 5 is a plan view of a fourth embodiment of an oscillating winding mass according to the invention;
  • the figure 6 is a partial cut along the line VI-VI of the figure 5 ; and
  • the figure 7 is a section of a fifth embodiment according to the invention.

Description détaillée d'un mode de réalisation préféréDetailed description of a preferred embodiment

On a représenté aux figures 1 et 2 un premier mode de réalisation d'une masse de remontage oscillante selon l'invention, désignée par la référence générale 1. Cette masse est destinée à équiper classiquement le mouvement à remontage automatique d'une pièce d'horlogerie (non représentés) et comportant notamment une boîte formée d'une carrure fermée par une glace et un fond au moins partiellement transparent pour rendre visible le mouvement depuis le fond.We represented at figures 1 and 2 a first embodiment of an oscillating winding mass according to the invention, designated by the general reference 1. This mass is intended to conventionally equip the automatic winding movement of a timepiece (not shown) and comprising in particular a case formed of a middle part closed by a crystal and an at least partially transparent back to make the movement visible from the back.

La masse de remontage 1 comprend une partie pesante 2 fixée à un organe de liaison 4 destiné à relier la partie pesante à un axe (non représenté) solidaire d'un mouvement d'horlogerie, la masse 1 étant destinée à être montée à rotation sur cet axe. A cet effet, l'organe de liaison comporte en son centre une ouverture 6 dans laquelle est chassée une bague 8 formant le moyeu de la masse 1.The winding mass 1 comprises a heavy part 2 fixed to a connecting member 4 intended to connect the heavy part to an axis (not shown) integral with a clockwork movement, the mass 1 being intended to be mounted for rotation on this axis. For this purpose, the connecting member has in its center an opening 6 in which is driven a ring 8 forming the hub of the mass 1.

Dans cette variante, l'organe de liaison 4 est formé d'un disque plein réalisé en un matériau transparent tel que le saphir ce qui permet d'observer le mouvement au travers de la masse 1. Il est rappelé que l'utilisation du saphir dans une masse de remontage comme organe de liaison entre la partie pesante et le mouvement va à l'encontre des préjugés de l'homme de métier qui, lorsqu'il doit concevoir une masse de remontage, tend toujours à utiliser des matériaux ayant une grande ténacité, c'est-à-dire de bonnes capacités à absorber les chocs auxquels la masse est soumise au cours de sa rotation. Il va de soi que tout autre matériau transparent ou translucide, synthétique ou naturel peut être utilisé. Par exemple, un polycarbonate approprié pour cette application peut être utilisé. Dans tous les cas, le matériau devra au moins permettre le passage de la lumière pour pouvoir distinguer les formes des éléments se trouvant derrière.In this variant, the connecting member 4 is formed by a solid disc made of a transparent material such as sapphire, which makes it possible to observe the movement through the mass 1. It is recalled that the use of sapphire in a winding mass as a connecting member between the heavy part and the movement goes against the prejudices of the skilled person who, when he has to design a winding mass, always tends to use materials having a large tenacity, that is to say good capacities to absorb the shocks to which the mass is subjected during its rotation. It goes without saying that any other transparent or translucent, synthetic or natural material can be used. For example, a polycarbonate suitable for this application can be used. In all cases, the material must at least allow the passage of light to be able to distinguish the shapes of the elements behind it.

La partie pesante 2 comprend un anneau 10 qui comporte sur un arc de cercle d'environ 180° un balourd 12 qui est formé par une surépaisseur dudit anneau 10. Dans l'exemple illustré, l'anneau 10 et le balourd 12 sont réalisés en une seule pièce. De préférence, la partie pesante 2 est réalisée en un métal à forte densité, par exemple, en un alliage de tungstène. Toutefois, il va de soi que selon une variante, le balourd 12 peut être rapporté sur l'anneau 10 par tout moyen de fixation classique tel que vissage, collage, sertissage, soudage ou analogue. Dans ce cas, l'anneau 10 peut être réalisé en une matière facilement usinable telle que l'acier, et le balourd 12 en un alliage de tungstène. Dans l'exemple représenté, l'anneau 10 comprend une feuillure 14 dans laquelle le disque 4 est engagé et collé. Toutefois, il va de soi que selon une variante, ce disque 4 peut être fixé dans la feuillure 14 de l'anneau 10 par tout autre moyen de fixation classique tel que vissage, rivetage ou analogue. De préférence, l'anneau 10 présente un décor sur sa surface externe, c'est-à-dire visible depuis le fond de la montre. Ce décor occupe de préférence toute la surface externe visible de l'anneau.The heavy part 2 comprises a ring 10 which comprises on an arc of a circle of approximately 180 ° an unbalance 12 which is formed by an extra thickness of said ring 10. In the example illustrated, the ring 10 and the unbalance 12 are produced in one piece. Preferably, the heavy part 2 is made of a high density metal, for example, a tungsten alloy. However, it goes without saying that according to a variant, the unbalance 12 can be attached to the ring 10 by any conventional fixing means such as screwing, gluing, crimping, welding or the like. In this case, the ring 10 can be made of an easily machinable material such as steel, and the unbalance 12 of a tungsten alloy. In the example shown, the ring 10 comprises a rebate 14 in which the disc 4 is engaged and glued. However, it goes without saying that according to a variant, this disc 4 can be fixed in the rebate 14 of the ring 10 by any other conventional fixing means such as screwing, riveting or the like. Preferably, the ring 10 has a decoration on its external surface, that is to say visible from the back of the watch. This decoration preferably occupies the entire visible external surface of the ring.

L'organe de liaison 4 peut comporter au moins un filtre coloré 30 qui occupe toute la surface de l'organe de liaison 4.The connecting member 4 can include at least one colored filter 30 which occupies the entire surface of the connecting member 4.

Selon une autre variante de l'invention, le filtre coloré peut n'occuper qu'une partie de la surface de l'organe de liaison. Par exemple le filtre coloré peut être sous la forme d'une bande, d'un anneau continu ou discontinu, prévu sur l'organe de liaison sensiblement au niveau des éléments visibles du mouvement auxquels on souhaite donner une apparence colorée, au moins temporairement, en fonction du mouvement de rotation de la masse de remontage oscillante.According to another variant of the invention, the color filter may occupy only part of the surface of the connecting member. For example, the colored filter may be in the form of a strip, of a continuous or discontinuous ring, provided on the connecting member substantially at the level of the visible elements of the movement to which it is desired to give a colored appearance, at least temporarily, depending on the rotational movement of the oscillating winding weight.

D'une manière préférée non comprise dans l'invention, ledit filtre coloré 30 peut être constitué par un composant coloré prévu dans la masse du matériau transparent ou translucide. On utilisera par exemple un colorant, un pigment ou un mélange de colorants ou de pigments, diffusé dans la masse du matériau transparent ou translucide. Ce mode de réalisation sera particulièrement privilégié lorsque le filtre coloré occupe toute la surface de l'organe de liaison.In a preferred manner not included in the invention, said colored filter 30 may consist of a colored component provided in the mass of the transparent or translucent material. For example, use will be made of a dye, a pigment or a mixture of dyes or pigments, diffused in the mass of the transparent or translucent material. This embodiment will be particularly preferred when the color filter occupies the entire surface of the connecting member.

Lorsque le matériau transparent ou translucide est du polycarbonate, l'organe de liaison 4 teinté dans la masse peut par exemple être obtenu à partir d'un compound comprenant du polycarbonate, un pigment ou un mélange de pigments et un agent dispersant. Ce compound est ensuite injecté pour obtenir l'organe de liaison 4. Il est également possible d'utiliser directement un pigment sous une forme liquide. Tout pigment compatible avec le matériau transparent ou translucide pour le teindre dans la masse peut être utilisé.When the transparent or translucent material is polycarbonate, the mass-dyed connecting member 4 can for example be obtained from a compound comprising polycarbonate, a pigment or a mixture of pigments and a dispersing agent. This compound is then injected to obtain the binding member 4. It is also possible to directly use a pigment in liquid form. Any pigment compatible with the transparent or translucent material to dye it in the mass can be used.

Selon un autre mode de réalisation, le filtre coloré est constitué par un film coloré transparent ou translucide déposé sur au moins une partie de la surface de l'organe de liaison 4. Un tel film peut être un vernis ou une encre. Il peut être déposé sur la surface interne (côté mouvement) ou externe (côté fond) de l'organe de liaison 4. Ce mode de réalisation peut être mis en œuvre pour former un filtre coloré qui occupe tout ou partie de la surface de l'organe de liaison.According to another embodiment, the colored filter consists of a transparent or translucent colored film deposited on at least part of the surface of the connecting member 4. Such a film can be a varnish or an ink. It can be deposited on the internal (movement side) or external (bottom side) surface of the connecting member 4. This embodiment can be implemented to form a colored filter which occupies all or part of the surface of the connection. liaison body.

En outre, d'une manière particulièrement avantageuse, au moins un un élément du mouvement au moins partiellement visible depuis le fond du mouvement et pouvant être au moins partiellement vu au travers du filtre coloré, présente une couleur neutre, par exemple grise, avec un effet mat. Cette couleur neutre est choisie pour ne pas réduire, ou réduire le moins possible, l'effet du filtre coloré. Ainsi, l'organe de liaison 4 agit comme un filtre coloré et permet de donner l'illusion que les éléments visibles depuis le fond du mouvement sont colorés, de couleur différente de leur couleur réelle. L'invention permet donc de donner aux éléments visibles depuis le fond du mouvement une couleur différente de leur couleur naturelle, sans nuire à leur fonctionnalité. Selon que le filtre coloré occupe tout ou partie de la surface de l'organe de liaison, l'effet de l'apparence colorée donnée aux éléments visibles depuis le fond du mouvement est permanent ou temporaire mais répété en fonction du mouvement de rotation de la masse de remontage oscillante.In addition, in a particularly advantageous manner, at least one element of the movement at least partially visible from the bottom of the movement and which can be at least partially seen through the color filter, has a neutral color, for example gray, with a matt effect. This neutral color is chosen so as not to reduce, or reduce as little as possible, the effect of the color filter. Thus, the link member 4 acts as a colored filter and allows to give the illusion that the elements visible from the background of the movement are colored, of a different color from their real color. The invention therefore makes it possible to give the elements visible from the background of the movement a color different from their natural color, without impairing their functionality. Depending on whether the colored filter occupies all or part of the surface of the connecting member, the effect of the colored appearance given to the elements visible from the background of the movement is permanent or temporary but repeated according to the rotational movement of the oscillating winding weight.

A la figure 3 on a représenté un deuxième mode de réalisation d'une masse de remontage oscillante 1 selon l'invention. Sur cette figure et les figures suivantes, les éléments identiques à ceux décrits en liaison avec les figures 1 et 2 ont été désignés par les mêmes références numériques. On notera également que, pour des raisons de clarté, la bague 8 formant le moyeu de la masse 1 a été omise sur la figure 3.To the figure 3 there is shown a second embodiment of an oscillating winding mass 1 according to the invention. In this figure and the following figures, the elements identical to those described in connection with the figures 1 and 2 have been designated by the same reference numerals. It will also be noted that, for reasons of clarity, the ring 8 forming the hub of the mass 1 has been omitted on the figure 3 .

A la différence du mode de réalisation représenté aux figures 1 et 2, l'organe de liaison 4 de ce mode de réalisation est formé d'un disque partiellement évidé également en saphir. Plus précisément, l'organe de liaison 4 comprend une partie centrale 16 munie de l'ouverture 6 et un anneau périphérique 18 concentrique à l'ouverture 6, la partie centrale 16 étant reliée à l'anneau périphérique 18 par trois bras de liaison 20. Les évidements du disque 4 seront avantageusement réalisés à l'aide de meules diamantées ou encore à l'aide d'un faisceau laser. L'organe de liaison 4 est teinté dans la masse afin de former un filtre coloré 30.Unlike the embodiment shown in figures 1 and 2 , the connecting member 4 of this embodiment is formed of a partially hollowed disc also made of sapphire. More precisely, the connecting member 4 comprises a central part 16 provided with the opening 6 and a peripheral ring 18 concentric with the opening 6, the central part 16 being connected to the peripheral ring 18 by three connecting arms 20 The recesses of the disc 4 will advantageously be made using diamond grinding wheels or even using a laser beam. The connecting member 4 is dyed in the mass in order to form a colored filter 30.

A la figure 4 on a représenté un troisième mode de réalisation d'une masse de remontage oscillante 1 selon l'invention dans laquelle l'organe de liaison 4 est formé d'une lentille optique grossissante circulaire teintée dans la masse afin de former un filtre coloré 30. Il va de soi que selon des variantes de réalisation, tout autre type de lentille optique peut être envisagé. On pourra notamment prévoir des lentilles de Fresnel qui ont la particularité d'être plus plates qu'une lentille classique pour un grossissement donné. On pourrait encore envisager d'utiliser pour ces organes de liaison 4 des lentilles produisant des effets kaléidoscopiques.To the figure 4 there is shown a third embodiment of an oscillating winding mass 1 according to the invention in which the connecting member 4 is formed of a circular optical magnifying lens tinted in the mass in order to form a colored filter 30. It is shown. It goes without saying that according to variant embodiments, any other type of optical lens can be envisaged. It is possible in particular to provide Fresnel lenses which have the particularity of being flatter than a conventional lens for a given magnification. It would also be possible to envisage using, for these connecting members 4, lenses producing kaleidoscopic effects.

Aux figures 5 et 6 on a représenté un quatrième mode de réalisation d'une masse de remontage oscillante 1 de l'invention dans lequel l'organe de liaison 4 est formé d'une plaque transparente conformée en secteur angulaire s'étendant sur environ 180° et dans lequel la partie pesante 2 est formée par une partie d'anneau s'étendant à la périphérie de la plaque 4 sur un arc de cercle d'environ 180°. La plaque 4 est réalisée en saphir teinté dans la masse afin de former un filtre coloré 30 et comprend en outre une lentille optique 22 grossissante qui s'étend radialement à partir de la bague 8 jusqu'à l'anneau de la partie pesante 2.To the figures 5 and 6 there is shown a fourth embodiment of an oscillating winding mass 1 of the invention in which the connecting member 4 is formed of a transparent plate shaped as an angular sector extending over approximately 180 ° and in which the heavy part 2 is formed by a ring part extending to the periphery of the plate 4 on an arc of a circle of about 180 °. The plate 4 is made of sapphire tinted in the mass in order to form a colored filter 30 and further comprises a magnifying optical lens 22 which extends radially from the ring 8 to the ring of the heavy part 2.

A la figure 7 on a représenté un cinquième mode de réalisation d'une masse de remontage oscillante 1 selon l'invention dans lequel l'organe de liaison 4 est formé d'une plaque transparente teintée dans la masse afin de former un filtre coloré 30, en forme de secteur angulaire s'étendant sur environ 180° et comprenant à sa périphérie un rebord 24 plié en biais. Dans ce mode de réalisation la partie pesante 2 est également formée par une partie d'anneau s'étendant sur un arc de cercle d'environ 180° et fixée au moyen de vis 26 sur la face intérieure 28 du rebord 24. On notera que ce mode de réalisation de la masse de remontage 1 permet, grâce à son rebord 24 plié, de s'adapter au mieux à la forme extérieure du mouvement qu'elle est destinée à équiper, étant entendu que le rebord 24 est plié en direction du mouvement.To the figure 7 there is shown a fifth embodiment of an oscillating winding mass 1 according to the invention in which the connecting member 4 is formed of a transparent plate tinted in the mass in order to form a colored filter 30, in the form of a angular sector extending over approximately 180 ° and comprising at its periphery a flange 24 folded at an angle. In this embodiment, the heavy part 2 is also formed by a ring part extending over an arc of a circle of approximately 180 ° and fixed by means of screws 26 on the inner face 28 of the rim 24. It will be noted that this embodiment of the winding mass 1 allows, thanks to its folded rim 24, to best adapt to the external shape of the movement that it is intended to equip, it being understood that the rim 24 is folded in the direction of the movement.

Claims (12)

  1. Oscillating winding weight (1) for a timepiece movement comprising a heavy portion (2) fixed to a connecting element (4) intended to connect said heavy portion (2) to an arbor integral with a movement, said oscillating winding weight being intended to be rotatably mounted on said arbor, said connecting element (4) being made of a transparent or translucent material, characterized in that said connecting element (4) comprises at least one coloured filter (30), said coloured filter (30) being formed by a coloured transparent or translucent film deposited on at least one part of the surface of the connecting element (4).
  2. Winding weight (1) according to claim 1, characterized in that said coloured filter (30) occupies all of the surface of the connecting element (4).
  3. Winding weight (1) according to any of the preceding claims, characterized in that said connecting element (4) is formed of a full disc.
  4. Winding weight (1) according to any of claims 1 to 2, characterized in that said connecting element (4) is formed of an at least partially openworked disc.
  5. Winding weight (1) according to any of claims 1 to 2 or 4, characterized in that said connecting element (4) is formed of at least two connecting arms (20).
  6. Winding weight (1) according to any of the preceding claims, characterized in that said connecting element (4) is made of sapphire.
  7. Winding weight (1) according to any of the preceding claims, characterized in that said connecting element (4) comprises an optical lens.
  8. Winding weight (1) according to any of the preceding claims, characterized in that said heavy portion (2) is formed of a ring portion extending over an arc of a circle of approximately 180°.
  9. Winding weight (1) according to any of claims 1 to 7, characterized in that said heavy portion (2) is formed of a circular ring comprising, over an arc of a circle of approximately 180°, an unbalance.
  10. Winding weight (1) according to any of the preceding claims, characterized in that said heavy portion (2) is fixed to said connecting element (4) by bonding.
  11. Timepiece comprising a case formed of a case middle closed by a crystal and an at least partially transparent back cover and inside which is housed a timepiece movement with an automatic winding mechanism, characterized in that said movement is fitted with an oscillating winding weight (1) according to any of claims 1 to 10.
  12. Timepiece according to claim 11, characterized in that said movement comprises at least one element that is at least partially visible from the back of the movement and able to be at least partially seen through the coloured filter (30), said element having a neutral colour.
EP17180736.5A 2017-07-11 2017-07-11 Oscillating winding mass for timepiece with automatic movement, and timepiece equipped with such a winding mass Active EP3428737B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP17180736.5A EP3428737B1 (en) 2017-07-11 2017-07-11 Oscillating winding mass for timepiece with automatic movement, and timepiece equipped with such a winding mass
JP2018122736A JP6691938B2 (en) 2017-07-11 2018-06-28 Oscillating winding weight for timer with automatic movement and timer attached with such winding weight
US16/022,907 US20190018367A1 (en) 2017-07-11 2018-06-29 Oscillating winding weight for a timepiece with an automatic movement and timepiece fitted with such a winding weight
CN201821084860.8U CN208588904U (en) 2017-07-11 2018-07-10 Upper item for watch and clock movement puts top and clock and watch
CN201810749566.2A CN109240067B (en) 2017-07-11 2018-07-10 Winding mass for a timepiece with an automatic movement and timepiece fitted with such a winding mass

Applications Claiming Priority (1)

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EP17180736.5A EP3428737B1 (en) 2017-07-11 2017-07-11 Oscillating winding mass for timepiece with automatic movement, and timepiece equipped with such a winding mass

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EP3428737B1 true EP3428737B1 (en) 2021-04-07

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EP3712714B1 (en) * 2019-03-19 2022-11-30 Omega SA Dial for a universal watch
EP3779606B1 (en) * 2019-08-15 2023-05-17 ETA SA Manufacture Horlogère Suisse Self-winding watch
EP3839646A1 (en) * 2019-12-18 2021-06-23 The Swatch Group Research and Development Ltd Oscillating winding mass provided with a decorative element for automatic movement of a timepiece
EP3839647B1 (en) 2019-12-19 2023-10-11 The Swatch Group Research and Development Ltd Winding assembly with moire effect for automatic movement of a timepiece
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

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EP3428737A1 (en) 2019-01-16
JP6691938B2 (en) 2020-05-13
CN109240067A (en) 2019-01-18
JP2019020396A (en) 2019-02-07
CN208588904U (en) 2019-03-08
CN109240067B (en) 2021-08-06
US20190018367A1 (en) 2019-01-17

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