EP3098668B1 - Power reserve indicator for a timepiece - Google Patents

Power reserve indicator for a timepiece Download PDF

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Publication number
EP3098668B1
EP3098668B1 EP15169914.7A EP15169914A EP3098668B1 EP 3098668 B1 EP3098668 B1 EP 3098668B1 EP 15169914 A EP15169914 A EP 15169914A EP 3098668 B1 EP3098668 B1 EP 3098668B1
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EP
European Patent Office
Prior art keywords
barrel
differential
toothing
power reserve
arbor
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
EP15169914.7A
Other languages
German (de)
French (fr)
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EP3098668A1 (en
Inventor
Matthäus Friedli
Florent Strahm
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 EP15169914.7A priority Critical patent/EP3098668B1/en
Priority to EP16165724.2A priority patent/EP3106927B1/en
Priority to US15/140,991 priority patent/US9971311B2/en
Priority to JP2016098540A priority patent/JP6196706B2/en
Priority to CN201620502367.8U priority patent/CN205827081U/en
Priority to CN201610366262.9A priority patent/CN106200341B/en
Publication of EP3098668A1 publication Critical patent/EP3098668A1/en
Application granted granted Critical
Publication of EP3098668B1 publication Critical patent/EP3098668B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G04C10/04—Arrangements of electric power supplies in time pieces with means for indicating the condition of the power supply
    • 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
    • G04B9/00—Supervision of the state of winding, e.g. indicating the amount of winding
    • 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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor
    • 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
    • G04B13/00—Gearwork
    • G04B13/007—Gearwork with differential work
    • G04B13/008—Differentials
    • 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
    • G04B9/00—Supervision of the state of winding, e.g. indicating the amount of winding
    • G04B9/005—Supervision of the state of winding, e.g. indicating the amount of winding by optical indication of the amount of winding

Definitions

  • the invention relates to a clockwork motor comprising a barrel, pivoting about a shaft, enclosing a spring mounted between said barrel and said shaft, which carries pivotally a ratchet outside said barrel.
  • the invention also relates to a power reserve indicator mechanism for displaying the power reserve of a clockwork motor comprising a drum consisting of a drum provided with a toothing and a lid enclosing a spring together. mounted between on the one hand said barrel and on the other hand a barrel shaft around which rotates said barrel, said barrel shaft being load-bearing and pivotally integral with a ratchet of transmission outside said barrel and facing said lid, respectively drum audit.
  • the invention also relates to a watch movement comprising at least one such motor, and / or at least one such power reserve indicator mechanism.
  • the invention also relates to a watch, or timepiece, comprising at least one such motor, and / or at least one such power reserve indicator mechanism.
  • the invention relates to the field of mechanical timepieces, particularly watches, comprising as energy source at least one spring-loaded cylinder engine.
  • the invention relates to the display complication of the available power reserve.
  • the power reserve indication of a mechanical watch, powered by one or more barrels, is a useful complication for the user.
  • the document EP1970778 on behalf of WATCHES BREGUET SA describes a power reserve indicator comprising a planetary differential gear, of rather complex execution, of which a first input is connected to the barrel shaft, a second input to the barrel, and an output to an indicator power reserve.
  • the frame of the differential gear is coaxial with the barrel shaft, the second input being integral with the barrel cover.
  • the output is a ring gear, which is kinematically connected to the first input by satellites meshing with each other, and which are carried by the cover.
  • the document DE1015747 in the name of FELSA AG describes a similar differential, with first input is connected to the barrel shaft via a gear, a second input to the barrel, and a differential output at an output wheel which comprises housing balls or rollers interposed between the barrel and the last mobile of this cog.
  • the invention proposes to provide a power-reserve display device that is easy to perform by transforming an existing mechanical movement that is inexpensive and consumes the minimum of space.
  • the invention relates to a clockwork motor according to claim 1.
  • the invention further relates to a power reserve indicator mechanism according to claim 2.
  • the invention also relates to a watch movement comprising at least one such motor, and / or at least one such power reserve indicator mechanism.
  • the invention also relates to a watch comprising at least one such motor, and / or at least one such power reserve indicator mechanism.
  • the invention relates to a power reserve display device for a mechanical timepiece, in particular a watch, comprising at least one energy source constituted by a spring-loaded barrel.
  • Patent applications of the same applicant, CH01102 / 14 and EP14177775.5 describe a power-reserve indicator for displaying the power-reserve indication of a plurality of energy accumulators each comprising an indicator cooperating with an input of a differential mechanism that this indicator comprises. power reserve, and an output of this differential mechanism cooperates with a display mechanism of the total power reserve of the plurality of energy accumulators, at least two of the inputs are coaxial.
  • the differential comprises a hub driving a carrier disc, which carries balls in contact with both a first input tray and a second input tray, which are mounted idle on this hub, under the action of friction imposed by one or more springs.
  • the hub is still secured to an outlet in the form of a wheel which meshes with a return plate that comprises an input mobile, pivoting about another fourth pivot axis, this board being coaxial and pivotally integral.
  • a pinion that drives an input board of a power reserve display mechanism, coaxial and pivotally integral with a shaft arranged to carry a display element such as needle, disk, or the like.
  • the invention described below relates to different objects according to a common inventive step: an engine comprising a barrel, an additional mechanism designed for the cheaper conversion of such an engine to add the power reserve display function, or an autonomous power reserve mechanism comprising such an engine.
  • the invention in a first variant, relates to a clockwork motor comprising a barrel.
  • This barrel is of conventional type, pivoting about a shaft 11, enclosing a spring mounted between the barrel and the shaft 11, which carries pivotally a ratchet 21 outside the barrel.
  • the engine 10 comprises a differential 20, coaxial with the barrel along the axis D of pivoting of the barrel which is also the axis of the shaft 11, and a first input of which is driven indirectly by the ratchet 21, and whose second entry is the barrel.
  • the output of this differential 20 is a pivoting output wheel 23, coaxial with the shaft 11, which either constitutes a power-reserve indicator or which drives a power-reserve indicator mechanism 50, in particular and without limitation. via a gear train 51 or the like.
  • this differential 20 comprises balls 25, which cooperate with an upper surface 13 of the barrel and with a lower surface 26 of a differential board 22, which pivots on the shaft 11, coaxial with it, and is connected to the ratchet 21 by a friction means 24, and which constitutes the first input.
  • These balls 25 cause in their rotation housing that includes the output wheel 23 forming a cage.
  • the barrel conventionally consists of a drum 14 provided with a toothing and a lid 12 enclosing the spring together.
  • the ratchet 21 faces the lid 12 as visible in the figures, or respectively to the drum 14.
  • the first entry for the arming is driven indirectly by the ratchet 21 and the second entry for disarming is constituted by the cover 12, or respectively by the drum 14. And the balls 25 cooperate, on the one hand with an upper surface 13 of the cover 12, or respectively of the drum 14, and secondly with the lower surface 26 of the differential board 22.
  • the friction means 24 is a spring disposed between the ratchet 21 and the differential wheel 22.
  • the invention in a second variant, relates to a power reserve indicator mechanism 100 for displaying the power reserve of a clockwork motor comprising a barrel consisting of a drum 14 provided with a toothing and a a cover 12 enclosing together a spring mounted between on the one hand the barrel and on the other hand a barrel shaft 11 around which the barrel rotates, the barrel shaft 11 being load-bearing and pivotally integral with a transmission ratchet 21 outside the barrel and facing the lid 12, or drum 14.
  • This is an additional mechanism, it is sufficient to add to an existing barrel assembly if it is predisposed (by adequate machining of the barrel).
  • the power reserve indicator mechanism 100 can integrate a motor 10 as described above.
  • the transmission of movement of the ratchet 21 to the differential wheel 22 requires compliance with the direction of pivoting, and may require a gear ratio or reduction: due to the principle of differential ball is a reduction in a gear report of 2.
  • the power reserve indicator mechanism 100 comprises a plate 2, which carries the motor 10. And this plate 2 carries a differential drive gear 30 meshing with the ratchet 21 and with a differential gear wheel 40 that carries also the plate 2 and which meshes with the differential board 22.
  • the differential drive gear train 30 comprises a differential drive gear 32, which carries a differential gear 31, which meshes directly with the ratchet 21.
  • the toothing 33 of the differential drive gear 32 intermesh with the teeth 42 a differential wheel return 41.
  • the power reserve indicator mechanism 100 includes a plate 2 carrying the motor 10:
  • This plate comprises at least two pivots 60, each carrying a pinion 61 having a toothing 62 meshes, on the one hand with an external toothing that comprises the differential board 22, and secondly with an internal toothing 210 that includes a ratchet 21.
  • This fourth variant planetary gearing is, however, more expensive than the third variant with intermediate gear wheels.
  • the figure 5 illustrates, in a very simplified way, to the extent that most of its components are similar to those set out above, another variant, in which the ratchet 21 directly forms the lid of the barrel, and there is naturally a game (not shown in the figure) between the ratchet 21 and the drum 14.
  • the balls 25 then cooperate with an upper surface of the drum 14.
  • This ratchet 21 has a toothing 211, which attacks the differential board via an ad hoc wheel.
  • the toothing 211 cooperates with a first toothing 72 of a ratchet 71, a second gear 73 of which engages a toothing 75 of a reversing gear 74 which also meshes with the toothing 220 of the differential board 22.
  • the means friction 24 then takes direct support on a plate 2.
  • the driving of the train by the drum 14 of the cylinder must then be done in another peripheral zone of the barrel.
  • the invention also relates to a watch movement 200 comprising at least one such motor 10, and / or at least one such power reserve indicator mechanism 100.
  • the invention also relates to a watch 300, or timepiece, comprising at least one such motor 10, and / or at least one such power reserve indicator mechanism 100.
  • the cover (or drum, depending on the arrangement) of the barrel is directly used as an entrance for disarming.
  • the output wheel 23 of the differential can not be directly driven through the transmission ratchet 21, in fact, the latter rotating in the same direction as the barrel, the output of the differential would rotate only in one direction.
  • a gear train is integrated to change the direction of pivoting.
  • the transmission ratchet integral with the barrel shaft, drives the differential board through a simple kinematics, in particular a cog, with the interposition of an inverter to make up the correct direction of rotation: this is the object of the third and fourth variants, respectively double cog, and gear planetary, which is a little more expensive but less cumbersome than the previous one. Overall gain of space remains, whatever the chosen solution, important compared to the prior art.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmission Devices (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Gears, Cams (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)
  • Electromechanical Clocks (AREA)

Description

Domaine de l'inventionField of the invention

L'invention concerne un moteur d'horlogerie comportant un barillet, pivotant autour d'un arbre, enfermant un ressort monté entre ledit barillet et ledit arbre, lequel porte solidaire en pivotement un rochet extérieur audit barillet.The invention relates to a clockwork motor comprising a barrel, pivoting about a shaft, enclosing a spring mounted between said barrel and said shaft, which carries pivotally a ratchet outside said barrel.

L'invention concerne encore un mécanisme indicateur de réserve de marche pour l'affichage de la réserve de marche d'un moteur d'horlogerie comportant un barillet constitué d'un tambour muni d'une denture et d'un couvercle enfermant ensemble un ressort monté entre d'une part ledit barillet et d'autre part un arbre de barillet autour duquel pivote ledit barillet, ledit arbre de barillet étant porteur et solidaire en pivotement d'un rochet de transmission extérieur audit barillet et faisant face audit couvercle, ou respectivement audit tambour.The invention also relates to a power reserve indicator mechanism for displaying the power reserve of a clockwork motor comprising a drum consisting of a drum provided with a toothing and a lid enclosing a spring together. mounted between on the one hand said barrel and on the other hand a barrel shaft around which rotates said barrel, said barrel shaft being load-bearing and pivotally integral with a ratchet of transmission outside said barrel and facing said lid, respectively drum audit.

L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel moteur, ou/et au moins un tel mécanisme indicateur de réserve de marche.The invention also relates to a watch movement comprising at least one such motor, and / or at least one such power reserve indicator mechanism.

L'invention concerne encore une montre, ou pièce d'horlogerie, comportant au moins un tel moteur, ou/et au moins un tel mécanisme indicateur de réserve de marche.The invention also relates to a watch, or timepiece, comprising at least one such motor, and / or at least one such power reserve indicator mechanism.

L'invention concerne le domaine des pièces d'horlogerie mécanique, notamment des montres, comportant comme source d'énergie au moins un moteur à barillet à ressort.The invention relates to the field of mechanical timepieces, particularly watches, comprising as energy source at least one spring-loaded cylinder engine.

L'invention concerne la complication d'affichage de la réserve de marche disponible.The invention relates to the display complication of the available power reserve.

Arrière-plan de l'inventionBackground of the invention

L'indication de réserve de marche d'une montre mécanique, alimentée en énergie par un ou plusieurs barillets, est une complication utile pour l'utilisateur.The power reserve indication of a mechanical watch, powered by one or more barrels, is a useful complication for the user.

Elle est néanmoins peu courante, car elle nécessite souvent une modification conséquente du mouvement de base, et cette complication consomme beaucoup d'espace, tant en volume qu'en épaisseur. Elle est donc souvent réservée à des mouvements logés dans des boîtes assez spacieuses, et sa généralisation est difficile.It is nevertheless uncommon, because it often requires a substantial modification of the basic movement, and this complication consumes a lot of space, both in volume and thickness. It is therefore often reserved for movements housed in fairly spacious boxes, and its generalization is difficult.

Le document EP1970778 au nom de MONTRES BREGUET SA décrit un indicateur de réserve de marche comportant un engrenage différentiel planétaire, d'exécution assez complexe, dont une première entrée est reliée à l'arbre de barillet, une deuxième entrée au barillet, et une sortie à un indicateur de réserve de marche. Le bâti de l'engrenage différentiel est coaxial à l'arbre de barillet, la deuxième entrée étant solidaire du couvercle du barillet. La sortie est une couronne à denture intérieure, qui est reliée cinématiquement à la premier entrée par des satellites en prise l'un avec l'autre, et qui sont portés par le couvercle.The document EP1970778 on behalf of WATCHES BREGUET SA describes a power reserve indicator comprising a planetary differential gear, of rather complex execution, of which a first input is connected to the barrel shaft, a second input to the barrel, and an output to an indicator power reserve. The frame of the differential gear is coaxial with the barrel shaft, the second input being integral with the barrel cover. The output is a ring gear, which is kinematically connected to the first input by satellites meshing with each other, and which are carried by the cover.

Le document DE1015747 au nom de FELSA AG décrit un différentiel analogue, avec première entrée est reliée à l'arbre de barillet par l'intermédiaire d'un rouage, une deuxième entrée au barillet, et une sortie différentielle au niveau d'une roue de sortie qui comporte des logements de billes ou rouleaux interposés entre le barillet et le dernier mobile de ce rouage.The document DE1015747 in the name of FELSA AG describes a similar differential, with first input is connected to the barrel shaft via a gear, a second input to the barrel, and a differential output at an output wheel which comprises housing balls or rollers interposed between the barrel and the last mobile of this cog.

Résumé de l'inventionSummary of the invention

L'invention se propose de fournir un dispositif d'affichage de réserve de marche facile à réaliser par transformation d'un mouvement mécanique existant, peu coûteux, et consommant le minimum d'espace.The invention proposes to provide a power-reserve display device that is easy to perform by transforming an existing mechanical movement that is inexpensive and consumes the minimum of space.

A cet effet, l'invention concerne un moteur d'horlogerie selon la revendication 1.For this purpose, the invention relates to a clockwork motor according to claim 1.

L'invention concerne encore un mécanisme indicateur de réserve de marche selon la revendication 2.The invention further relates to a power reserve indicator mechanism according to claim 2.

L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel moteur, ou/et au moins un tel mécanisme indicateur de réserve de marche.The invention also relates to a watch movement comprising at least one such motor, and / or at least one such power reserve indicator mechanism.

L'invention concerne encore une montre comportant au moins un tel moteur, ou/et au moins un tel mécanisme indicateur de réserve de marche.The invention also relates to a watch comprising at least one such motor, and / or at least one such power reserve indicator mechanism.

Description sommaire des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, en référence aux dessins annexés, où :

  • la figure 1 représente, de façon schématisée, en coupe passant par son axe de pivotement, un moteur d'horlogerie à barillet comportant un mécanisme différentiel coaxial à billes selon l'invention permettant la visualisation de la réserve de marche restante au niveau d'un indicateur commandé par une roue de sortie qui est la roue servant de cage aux billes du différentiel ;
  • la figure 2 représente, de façon similaire, un indicateur de réserve de marche sur la base du mécanisme de la figure 1, complété avec des rouages d'armage pour la transmission de mouvement entre un rochet et une planche de différentiel servant de première entrée au différentiel à billes, la deuxième entrée étant quant à elle constituée par le barillet lui-même;
  • la figure 3 représente, de façon similaire, un indicateur de réserve de marche sur la base du mécanisme de la figure 1, complété avec un rouage d'armage planétaire pour la transmission de mouvement entre un rochet et une planche de différentiel servant de première entrée au différentiel à billes, la deuxième entrée étant quant à elle constituée par le barillet lui-même;
  • la figure 4 est un schéma-blocs illustrant une montre comportant un mouvement incorporant un indicateur de réserve de marche, un moteur, et un différentiel à billes coaxial selon l'invention ;
  • la figure 5 représente, de façon similaire aux figures 1 à 4, mais plus schématique, un moteur d'horlogerie à barillet comportant un mécanisme différentiel coaxial à billes selon l'invention, dans lequel un rochet forme directement le couvercle du barillet.
Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which:
  • the figure 1 represents, schematically, in section passing through its pivot axis, a clockwork clock motor comprising a coaxial ball differential mechanism according to the invention for viewing the reserve a remaining step at an indicator controlled by an output wheel which is the wheel serving as a cage for the differential balls;
  • the figure 2 similarly represents a power reserve indicator on the basis of the mechanism of the figure 1 , completed with gear wheels for the transmission of movement between a ratchet and a differential board serving as a first input to the ball differential, the second input being constituted by the cylinder itself;
  • the figure 3 similarly represents a power reserve indicator on the basis of the mechanism of the figure 1 , completed with a planetary gear train for the transmission of movement between a ratchet and a differential board serving as a first input to the ball differential, the second input being constituted by the barrel itself;
  • the figure 4 is a block diagram illustrating a watch comprising a movement incorporating a power reserve indicator, a motor, and a coaxial ball differential according to the invention;
  • the figure 5 represents, similarly to Figures 1 to 4 , but more schematically, a clockwork clock motor comprising a coaxial ball differential mechanism according to the invention, wherein a ratchet directly forms the lid of the barrel.

Description détaillée des modes de réalisation préférésDetailed Description of the Preferred Embodiments

L'invention concerne un dispositif d'affichage de réserve de marche pour une pièce d'horlogerie mécanique, notamment une montre, comportant au moins une source d'énergie constituée par un barillet à ressort.The invention relates to a power reserve display device for a mechanical timepiece, in particular a watch, comprising at least one energy source constituted by a spring-loaded barrel.

Les demandes de brevet du même déposant, CH01102/14 et EP14177775.5 , décrivent un indicateur de réserve de marche d'horlogerie pour l'affichage de l'indication de réserve de marche d'une pluralité d'accumulateurs d'énergie comportant chacun un indicateur coopérant avec une entrée d'un mécanisme différentiel que comporte cet indicateur de réserve de marche, et dont une sortie de ce mécanisme différentiel coopère avec un mécanisme d'affichage de la réserve de marche totale de la pluralité d'accumulateurs d'énergie, dont au moins deux des entrées sont coaxiales.Patent applications of the same applicant, CH01102 / 14 and EP14177775.5 , describe a power-reserve indicator for displaying the power-reserve indication of a plurality of energy accumulators each comprising an indicator cooperating with an input of a differential mechanism that this indicator comprises. power reserve, and an output of this differential mechanism cooperates with a display mechanism of the total power reserve of the plurality of energy accumulators, at least two of the inputs are coaxial.

Plus particulièrement, dans cet art antérieur, le différentiel comporte un moyeu entraînant un disque porteur, lequel porte des billes en contact à la fois avec un premier plateau d'entrée et un deuxième plateau d'entrée, lesquels sont montés fous sur ce moyeu, sous l'action d'une friction imposée par un ou plusieurs ressorts. Le moyeu est encore solidaire d'une sortie sous la forme d'une roue qui engrène avec une planche de renvoi que comporte un mobile d'entrée, pivotant autour d'un autre quatrième axe de pivotement, cette planche étant coaxiale et solidaire en pivotement d'un pignon qui attaque une planche d'entrée d'un mécanisme d'affichage de réserve de marche, coaxiale et solidaire en pivotement d'un arbre agencé pour porter un élément d'affichage tel qu'aiguille, disque, ou similaire.More particularly, in this prior art, the differential comprises a hub driving a carrier disc, which carries balls in contact with both a first input tray and a second input tray, which are mounted idle on this hub, under the action of friction imposed by one or more springs. The hub is still secured to an outlet in the form of a wheel which meshes with a return plate that comprises an input mobile, pivoting about another fourth pivot axis, this board being coaxial and pivotally integral. a pinion that drives an input board of a power reserve display mechanism, coaxial and pivotally integral with a shaft arranged to carry a display element such as needle, disk, or the like.

L'invention décrite ci-après concerne différents objets selon une démarche inventive commune: un moteur comportant un barillet, un mécanisme additionnel conçu pour la transformation à moindres frais d'un tel moteur pour lui ajouter la fonction d'affichage de réserve de marche, ou encore un mécanisme autonome de réserve de marche comportant un tel moteur.The invention described below relates to different objects according to a common inventive step: an engine comprising a barrel, an additional mechanism designed for the cheaper conversion of such an engine to add the power reserve display function, or an autonomous power reserve mechanism comprising such an engine.

L'invention n'est décrite que dans le cas simple d'un moteur à un seul barillet, l'homme du métier saura l'extrapoler, notamment avec les documents cités ci-dessus, pour une pièce d'horlogerie comportant plusieurs barillets.The invention is described only in the simple case of a single cylinder engine, the skilled person will extrapolate, especially with the documents cited above, for a timepiece with several barrels.

Dans une première variante, l'invention concerne un moteur 10 d'horlogerie comportant un barillet. Ce barillet est de type classique, pivotant autour d'un arbre 11, enfermant un ressort monté entre le barillet et l'arbre 11, lequel porte solidaire en pivotement un rochet 21 extérieur au barillet.In a first variant, the invention relates to a clockwork motor comprising a barrel. This barrel is of conventional type, pivoting about a shaft 11, enclosing a spring mounted between the barrel and the shaft 11, which carries pivotally a ratchet 21 outside the barrel.

Selon l'invention, le moteur 10 comporte un différentiel 20, coaxial au barillet selon l'axe D de pivotement du barillet qui est aussi l'axe de l'arbre 11, et dont une première entrée est entraînée indirectement par le rochet 21, et dont une deuxième entrée est le barillet. La sortie de ce différentiel 20 est une roue de sortie 23 pivotante, coaxiale à l'arbre 11, qui, ou bien constitue un indicateur de réserve de marche, ou bien qui entraîne un mécanisme indicateur de réserve de marche 50, notamment et non limitativement par l'intermédiaire d'un rouage 51 ou similaire.According to the invention, the engine 10 comprises a differential 20, coaxial with the barrel along the axis D of pivoting of the barrel which is also the axis of the shaft 11, and a first input of which is driven indirectly by the ratchet 21, and whose second entry is the barrel. The output of this differential 20 is a pivoting output wheel 23, coaxial with the shaft 11, which either constitutes a power-reserve indicator or which drives a power-reserve indicator mechanism 50, in particular and without limitation. via a gear train 51 or the like.

Et, dans une réalisation préférée, car très économique, illustrée sur les figures, ce différentiel 20 comporte des billes 25, qui coopèrent avec une surface supérieure 13 du barillet et avec une surface inférieure 26 d'une planche de différentiel 22, laquelle pivote sur l'arbre 11, coaxiale avec lui, et est reliée au rochet 21 par un moyen de friction 24, et qui constitue la première entrée. Ces billes 25 entraînent dans leur rotation des logements que comporte la roue de sortie 23 formant cage.And, in a preferred embodiment, because very economical, illustrated in the figures, this differential 20 comprises balls 25, which cooperate with an upper surface 13 of the barrel and with a lower surface 26 of a differential board 22, which pivots on the shaft 11, coaxial with it, and is connected to the ratchet 21 by a friction means 24, and which constitutes the first input. These balls 25 cause in their rotation housing that includes the output wheel 23 forming a cage.

Plus particulièrement, le barillet est classiquement constitué d'un tambour 14 muni d'une denture et d'un couvercle 12 enfermant ensemble le ressort. Selon la configuration de l'ensemble barillet, le rochet 21 fait face au couvercle 12 tel que visible sur les figures, ou respectivement au tambour 14.More particularly, the barrel conventionally consists of a drum 14 provided with a toothing and a lid 12 enclosing the spring together. According to the configuration of the barrel assembly, the ratchet 21 faces the lid 12 as visible in the figures, or respectively to the drum 14.

La première entrée pour l'armage est entraînée indirectement par le rochet 21 et la deuxième entrée pour le désarmage est constituée par le couvercle 12, ou respectivement par le tambour 14. Et les billes 25 coopèrent, d'une part avec une surface supérieure 13 du couvercle 12, ou respectivement du tambour 14, et d'autre part avec la surface inférieure 26 de la planche de différentiel 22.The first entry for the arming is driven indirectly by the ratchet 21 and the second entry for disarming is constituted by the cover 12, or respectively by the drum 14. And the balls 25 cooperate, on the one hand with an upper surface 13 of the cover 12, or respectively of the drum 14, and secondly with the lower surface 26 of the differential board 22.

Plus particulièrement, le moyen de friction 24 est un ressort disposé entre le rochet 21 et la roue de différentiel 22.More particularly, the friction means 24 is a spring disposed between the ratchet 21 and the differential wheel 22.

Dans une deuxième variante, l'invention concerne un mécanisme indicateur de réserve de marche 100 pour l'affichage de la réserve de marche d'un moteur 10 d'horlogerie comportant un barillet constitué d'un tambour 14 muni d'une denture et d'un couvercle 12 enfermant ensemble un ressort monté entre d'une part le barillet et d'autre part un arbre de barillet 11 autour duquel pivote le barillet, l'arbre de barillet 11 étant porteur et solidaire en pivotement d'un rochet de transmission 21 extérieur au barillet et faisant face au couvercle 12, ou respectivement au tambour 14. Il s'agit d'un mécanisme additionnel, qu'il suffit de rajouter à un ensemble barillet existant s'il est prédisposé (par un usinage adéquat de l'arbre de barillet 11), ou d'ajouter à un ensemble barillet existant dont on a au préalable remplacé l'arbre de barillet 11 par un arbre adapté pour recevoir ce mécanisme indicateur de réserve de marche 100.In a second variant, the invention relates to a power reserve indicator mechanism 100 for displaying the power reserve of a clockwork motor comprising a barrel consisting of a drum 14 provided with a toothing and a a cover 12 enclosing together a spring mounted between on the one hand the barrel and on the other hand a barrel shaft 11 around which the barrel rotates, the barrel shaft 11 being load-bearing and pivotally integral with a transmission ratchet 21 outside the barrel and facing the lid 12, or drum 14. This is an additional mechanism, it is sufficient to add to an existing barrel assembly if it is predisposed (by adequate machining of the barrel). barrel shaft 11), or to add to an existing barrel assembly which has previously been replaced the barrel shaft 11 by a shaft adapted to receive this power reserve indicator mechanism 100.

Ce mécanisme 100 comporte alors un nombre très réduit de composants, chacun de coût unitaire faible. Le mécanisme 100 comporte un mécanisme différentiel 20 à billes, lequel est coaxial au barillet, et comporte un sous-ensemble qui est agencé pour être intercalé de façon axiale entre un couvercle 12, ou respectivement un tambour 14, et un rochet 21. Ce sous-ensemble comporte :

  • une planche de différentiel 22, qui est agencée pour pivoter coaxialement à l'arbre 11, cette planche de différentiel 22 étant disposée entre :
    • d'un côté supérieur, un moyen d'entraînement par friction 24 agencé pour un entraînement relatif entre la planche de différentiel 22 et un rochet 21,
      et, d'un côté inférieur,
    • une roue de sortie 23 qui est agencée pour pivoter coaxialement à l'arbre 11, et qui constitue une cage de maintien de billes 25 que comporte encore le sous-ensemble,
  • ces billes 25 étant agencées pour rouler entre une surface inférieure 26 de la planche de différentiel 22 et une surface supérieure 13 d'un couvercle 12, ou respectivement d'un tambour 14,
et où la roue de sortie 23 est agencée pour constituer ou entraîner un indicateur de réserve de marche 51 d'un moteur 10.This mechanism 100 then comprises a very small number of components, each of low unit cost. The mechanism 100 comprises a differential ball mechanism 20, which is coaxial with the barrel, and comprises a subassembly which is arranged to be interposed axially between a lid 12, or respectively a drum 14, and a ratchet 21. -Set includes:
  • a differential board 22, which is arranged to pivot coaxially with the shaft 11, this differential board 22 being disposed between:
    • an upper side, a friction drive means 24 arranged for a relative drive between the differential board 22 and a ratchet 21,
      and, on a lower side,
    • an output wheel 23 which is arranged to pivot coaxially with the shaft 11, and which constitutes a ball-holding cage 25 that still includes the subassembly,
  • these balls 25 being arranged to roll between a lower surface 26 of the differential board 22 and an upper surface 13 of a cover 12, or respectively of a drum 14,
and wherein the output wheel 23 is arranged to constitute or drive a power reserve indicator 51 of a motor 10.

Naturellement, le mécanisme indicateur de réserve de marche 100 peut intégrer un moteur 10 tel que décrit précédemment..Naturally, the power reserve indicator mechanism 100 can integrate a motor 10 as described above.

La transmission de mouvement du rochet 21 à la roue de différentiel 22 nécessite le respect du sens de pivotement, et peut nécessiter un rapport de réduction ou de démultiplication : en raison du principe de différentiel à billes il s'agit d'une démultiplication dans un rapport de 2.The transmission of movement of the ratchet 21 to the differential wheel 22 requires compliance with the direction of pivoting, and may require a gear ratio or reduction: due to the principle of differential ball is a reduction in a gear report of 2.

Dans une troisième variante, dont un exemple non limitatif est visible sur la figure 2, le mécanisme indicateur de réserve de marche 100 comporte une platine 2, qui est porteuse du moteur 10. Et cette platine 2 porte un rouage de renvoi d'entraînement différentiel 30 engrenant avec le rochet 21 et avec un rouage de renvoi différentiel 40 que porte aussi la platine 2 et qui engrène avec la planche de différentiel 22.In a third variant, a non-limiting example of which is visible on the figure 2 , the power reserve indicator mechanism 100 comprises a plate 2, which carries the motor 10. And this plate 2 carries a differential drive gear 30 meshing with the ratchet 21 and with a differential gear wheel 40 that carries also the plate 2 and which meshes with the differential board 22.

Le rouage de renvoi d'entraînement différentiel 30 comporte un pignon de renvoi entraînement différentiel 32, qui porte un renvoi entraînement différentiel 31, lequel engrène directement avec le rochet 21. La denture 33 du pignon de renvoi entraînement différentiel 32 engrène avec la denture 42 d'un renvoi roue différentiel 41.The differential drive gear train 30 comprises a differential drive gear 32, which carries a differential gear 31, which meshes directly with the ratchet 21. The toothing 33 of the differential drive gear 32 intermesh with the teeth 42 a differential wheel return 41.

Dans une quatrième variante, visible sur la figure 3, le mécanisme indicateur de réserve de marche 100 comporte une platine 2 porteuse du moteur 10 : Cette platine comporte au moins deux pivots 60 ,chacun porteur d'un pignon fou 61 dont une denture 62 engrène, d'une part avec une denture externe que comporte la planche de différentiel 22, et d'autre part avec une denture interne 210 que comporte un rochet 21. Cette quatrième variante à rouage d'armage planétaire est, toutefois, plus coûteuse que la troisième variante avec rouages d'armage intermédiaires.In a fourth variant, visible on the figure 3 , the power reserve indicator mechanism 100 includes a plate 2 carrying the motor 10: This plate comprises at least two pivots 60, each carrying a pinion 61 having a toothing 62 meshes, on the one hand with an external toothing that comprises the differential board 22, and secondly with an internal toothing 210 that includes a ratchet 21. This fourth variant planetary gearing is, however, more expensive than the third variant with intermediate gear wheels.

La figure 5 illustre, de façon très simplifiée, dans la mesure où la plupart des composants qu'elle comporte sont similaires à ceux exposés ci-dessus, une autre variante, dans laquelle le rochet 21 forme directement le couvercle du barillet, et il y a naturellement un jeu (non représenté sur la figure) entre ce rochet 21 et le tambour 14. Les billes 25 coopèrent alors avec une surface supérieure du tambour 14. Ce rochet 21 comporte une denture 211, qui attaque la planche de différentiel par l'intermédiaire d'un rouage ad hoc. Par exemple, sur la figure 5, la denture 211 coopère avec une première denture 72 d'un renvoi de rochet 71, dont une deuxième denture 73 attaque une denture 75 d'un renvoi inverseur 74, laquelle engrène aussi avec la denture 220 de la planche de différentiel 22. Le moyen de friction 24 prend alors directement appui sur une platine 2. Naturellement, l'entraînement du rouage par le tambour 14 du barillet doit alors se faire dans une autre zone périphérique du barillet.The figure 5 illustrates, in a very simplified way, to the extent that most of its components are similar to those set out above, another variant, in which the ratchet 21 directly forms the lid of the barrel, and there is naturally a game (not shown in the figure) between the ratchet 21 and the drum 14. The balls 25 then cooperate with an upper surface of the drum 14. This ratchet 21 has a toothing 211, which attacks the differential board via an ad hoc wheel. For example, on the figure 5 the toothing 211 cooperates with a first toothing 72 of a ratchet 71, a second gear 73 of which engages a toothing 75 of a reversing gear 74 which also meshes with the toothing 220 of the differential board 22. The means friction 24 then takes direct support on a plate 2. Naturally, the driving of the train by the drum 14 of the cylinder must then be done in another peripheral zone of the barrel.

L'invention concerne encore un mouvement d'horlogerie 200 comportant au moins un tel moteur 10, ou/et au moins un tel mécanisme indicateur de réserve de marche 100.The invention also relates to a watch movement 200 comprising at least one such motor 10, and / or at least one such power reserve indicator mechanism 100.

L'invention concerne encore une montre 300, ou pièce d'horlogerie, comportant au moins un tel moteur 10, ou/et au moins un tel mécanisme indicateur de réserve de marche 100.The invention also relates to a watch 300, or timepiece, comprising at least one such motor 10, and / or at least one such power reserve indicator mechanism 100.

En somme, l'intégration d'un différentiel à billes directement sur le barillet, de manière coaxiale, selon l'invention, offre une complication horlogère utile, à un coût de production acceptable, car ne nécessitant que des transformations limitées, et des ajouts de composants simples en petit nombre.In sum, the integration of a ball differential directly on the barrel, in a coaxial manner, according to the invention, offers a useful horological complication, at an acceptable production cost, because requiring only limited transformations, and additions. simple components in small numbers.

Au niveau du barillet, il suffit de modifier l'arbre. Il n'est plus nécessaire de rajouter un pignon solidaire du couvercle ou du tambour pour l'entraînement du différentiel.At the level of the barrel, it is enough to modify the tree. It is no longer necessary to add a pinion integral with the cover or the drum for the drive of the differential.

Le gain de hauteur par rapport à un différentiel standard est appréciable.The height gain compared to a standard differential is appreciable.

Le gain de place dans le plan est important, du fait que le différentiel est coaxial au barillet.The saving of space in the plane is important, because the differential is coaxial with the barrel.

Le couvercle (ou le tambour, selon la disposition) du barillet fait directement office d'entrée pour le désarmage.The cover (or drum, depending on the arrangement) of the barrel is directly used as an entrance for disarming.

La roue de sortie 23 du différentiel ne peut être directement entraînée au travers du rochet de transmission 21, en effet, celui-ci tournant dans le même sens que la barillet, la sortie du différentiel ne tournerait que dans un seul sens. C'est pourquoi, selon l'invention, on intègre un rouage pour changer le sens de pivotement. Le rochet de transmission, solidaire à l'arbre de barillet, entraîne la planche de différentiel au travers d'une cinématique simple, en particulier d'un rouage, avec interposition d'un inverseur pour rattraper le sens de pivotement correct : c'est l'objet des troisième et quatrième variantes, respectivement double rouage, et rouage planétaire, lequel est un peu plus coûteux mais moins encombrant que le précédent. Le gain global de place reste, quelle que soit la solution choisie, important par rapport à l'art antérieur.The output wheel 23 of the differential can not be directly driven through the transmission ratchet 21, in fact, the latter rotating in the same direction as the barrel, the output of the differential would rotate only in one direction. This is why, according to the invention, a gear train is integrated to change the direction of pivoting. The transmission ratchet, integral with the barrel shaft, drives the differential board through a simple kinematics, in particular a cog, with the interposition of an inverter to make up the correct direction of rotation: this is the object of the third and fourth variants, respectively double cog, and gear planetary, which is a little more expensive but less cumbersome than the previous one. Overall gain of space remains, whatever the chosen solution, important compared to the prior art.

Claims (7)

  1. Power source (10) for timepieces, comprising a going barrel, pivoting about an arbor (11), containing a mainspring mounted between said barrel and said arbor (11), which carries and rotates integrally with a ratchet wheel (21) for driving said arbor (11), wherein said power source (10) includes a differential gear (20) of which a first input is driven indirectly by said ratchet wheel (21) and a second input is said barrel, and whose output is a pivoting output wheel (23), coaxial with said arbor (11) and arranged to drive a power reserve indicator (51), and wherein said differential gear (20) includes balls (25) arranged to drive housings of said output wheel (23) forming a cage, and cooperating with an upper surface (13) of said barrel and with a lower surface (26), which is arranged on the side of said upper surface (13) of said barrel, of a differential plate (22), which plate (22) is arranged to pivot on said arbor (11), coaxially thereto, and is connected to said ratchet wheel (21) or to a bottom plate (2) by a friction means (24), and which forms said first input, said differential plate (22) being arranged to be connected to a bottom plate by a friction means (24), characterized in that said ratchet wheel (21) is incorporated in said barrel for which it forms a cover.
  2. Power reserve indicator mechanism (100) for displaying the power reserve of a timepiece power source (10) including a barrel formed of a drum (14) provided with a drum toothing and with a cover together enclosing a mainspring mounted between, on the one hand said barrel, and on the other hand a barrel arbor (11) about which said barrel pivots, said barrel arbor (11) carrying and pivoting integrally with a transmission ratchet wheel (21) external to said barrel, wherein said mechanism (100) includes a differential gear mechanism (20) including balls, coaxial to said barrel, and includes a sub-assembly arranged to be inserted axially between said cover (12), or respectively said drum (14) of said barrel and said ratchet wheel (21), said sub-assembly including a differential plate (22) arranged to pivot coaxially to said arbor (11) and which is disposed between, on an upper side, a friction drive means (24) arranged for relative driving between said differential plate (22) on the one hand and said ratchet wheel (21) on the other hand, and, on a lower side an output wheel (23) arranged to pivot coaxially to said arbor (11) and which forms a cage holding balls (25) also comprised in said sub-assembly, which balls (25) are arranged to roll between a lower surface (26) of said differential plate (22) and an upper surface (13) of said cover (12), or respectively of said drum (14), of said barrel, and wherein said output wheel (23) is arranged to form or to drive a power reserve indicator (51) of said power source (10), said mechanism (100) comprising a bottom plate (2) carrying said power source (10), characterized in that said bottom plate includes at least two pivots (60) each carrying a freely mounted pinion (61) having a pinion toothing (62) that meshes, on the one hand with an external toothing of said differential plate (22), and on the other hand with an internal toothing (210) of said ratchet wheel (21).
  3. Power reserve indicator mechanism (100) including a said power source (10) according to claim 1.
  4. Power reserve indicator mechanism (100) according to claim 3, characterized in that said ratchet wheel (21) includes a ratchet toothing (211) which is arranged to engage via a gear train with a toothing (220) of said differential plate (22).
  5. Power reserve indicator mechanism (100) according to claim 4, characterized in that said toothing (220) of said differential plate (22) is arranged to cooperate with a first toothing (72) of an intermediate ratchet wheel (71), a second toothing (73) of which engages with an intermediate toothing (75) of an intermediate reverser (74), which also meshes with said toothing (220) of said differential plate (22).
  6. Timepiece movement (200) including at least one power source (10) according to claim 1, and/or at least one power reserve indicator mechanism (100) according to any of claims 2 to 5.
  7. Watch (300) including at least one power source (10) according to claim 1 and/or at least one power reserve indicator mechanism (100) according to any of claims 2 to 5.
EP15169914.7A 2015-05-29 2015-05-29 Power reserve indicator for a timepiece Active EP3098668B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP15169914.7A EP3098668B1 (en) 2015-05-29 2015-05-29 Power reserve indicator for a timepiece
EP16165724.2A EP3106927B1 (en) 2015-05-29 2016-04-18 Power reserve indicator for a timepiece
US15/140,991 US9971311B2 (en) 2015-05-29 2016-04-28 Power reserve indicator for timepieces
JP2016098540A JP6196706B2 (en) 2015-05-29 2016-05-17 Power conservation indicator for watches
CN201620502367.8U CN205827081U (en) 2015-05-29 2016-05-27 Clock and watch power source and differential gear assembly and include the watch and clock movement of this clock and watch power source, wrist-watch or clock and watch
CN201610366262.9A CN106200341B (en) 2015-05-29 2016-05-27 Energy storage indicator for clock and watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15169914.7A EP3098668B1 (en) 2015-05-29 2015-05-29 Power reserve indicator for a timepiece

Publications (2)

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EP3098668A1 EP3098668A1 (en) 2016-11-30
EP3098668B1 true EP3098668B1 (en) 2018-10-31

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EP16165724.2A Active EP3106927B1 (en) 2015-05-29 2016-04-18 Power reserve indicator for a timepiece

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EP (2) EP3098668B1 (en)
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CN (2) CN205827081U (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3098668B1 (en) * 2015-05-29 2018-10-31 ETA SA Manufacture Horlogère Suisse Power reserve indicator for a timepiece
CN107422626B (en) * 2017-09-13 2022-10-11 杭州正驰达精密机械有限公司 Rotating shaft positioning structure of automatic hammer
EP3627233B1 (en) 2018-09-19 2022-03-30 ETA SA Manufacture Horlogère Suisse Timepiece power reserve indicator mechanism
JP7347103B2 (en) * 2019-10-16 2023-09-20 セイコーエプソン株式会社 clock

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US1173466A (en) * 1914-04-18 1916-02-29 Charles Teske Winding-index for indicator mechanism for timepieces, musical and other mechanisms.
CH110214A (en) 1924-06-17 1925-05-16 Knorr Bremse Ag Transition coupling for railway vehicles.
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US2698066A (en) * 1952-07-18 1954-12-28 Elgin Nat Watch Co Power reserve indicator
DE1015747B (en) * 1952-12-08 1957-09-12 Felsa A G Differential gear for monitoring the spring tension in watches
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EP1944662A1 (en) * 2007-01-15 2008-07-16 Vaucher Manufacture Fleurier SA Hour chiming mechanism
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CH701173B1 (en) * 2007-05-25 2010-12-15 Mps Micro Prec Systems Ag Ball differential, including a reserve indicator walk a mechanical watch movement.
EP2264551B1 (en) * 2009-06-16 2013-08-07 Samep S.A. - Montres Emile Pequignet Differential gear for a timepiece movement
CN202837824U (en) * 2012-07-20 2013-03-27 天津海鸥表业集团有限公司 Mechanism for displaying energy of watch spring
EP2977828B1 (en) * 2014-07-21 2017-08-30 ETA SA Manufacture Horlogère Suisse Timepiece power reserve indicator
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Also Published As

Publication number Publication date
EP3106927B1 (en) 2020-06-03
JP6196706B2 (en) 2017-09-13
EP3106927A3 (en) 2017-04-19
US9971311B2 (en) 2018-05-15
JP2016224043A (en) 2016-12-28
CN106200341A (en) 2016-12-07
US20160349709A1 (en) 2016-12-01
EP3098668A1 (en) 2016-11-30
CN205827081U (en) 2016-12-21
EP3106927A2 (en) 2016-12-21
CN106200341B (en) 2018-10-02

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