EP3306415B1 - Mechanical clock movement with power-reserve detection - Google Patents

Mechanical clock movement with power-reserve detection Download PDF

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Publication number
EP3306415B1
EP3306415B1 EP16192232.3A EP16192232A EP3306415B1 EP 3306415 B1 EP3306415 B1 EP 3306415B1 EP 16192232 A EP16192232 A EP 16192232A EP 3306415 B1 EP3306415 B1 EP 3306415B1
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EP
European Patent Office
Prior art keywords
wheel
cam
rotation
contact
movement
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EP16192232.3A
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German (de)
French (fr)
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EP3306415A1 (en
Inventor
Julien Saglini
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ETA Manufacture Horlogere Suisse SA
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ETA Manufacture Horlogere Suisse SA
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Application filed by ETA Manufacture Horlogere Suisse SA filed Critical ETA Manufacture Horlogere Suisse SA
Priority to EP16192232.3A priority Critical patent/EP3306415B1/en
Priority to JP2017184573A priority patent/JP6411608B2/en
Priority to CN201710888573.6A priority patent/CN107894700B/en
Priority to US15/724,833 priority patent/US10162309B2/en
Publication of EP3306415A1 publication Critical patent/EP3306415A1/en
Priority to HK18111499.3A priority patent/HK1252110A1/en
Application granted granted Critical
Publication of EP3306415B1 publication Critical patent/EP3306415B1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/02—Devices allowing the motion of a rotatable part in only one direction
    • G04B11/022—Devices allowing the motion of a rotatable part in only one direction with a ratchet which makes contact with the rotating member by means of teeth
    • 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
    • G04B1/16—Barrels; Arbors; Barrel axles
    • 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
    • G04B1/22—Compensation of changes in the motive power of the mainspring
    • 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 present invention relates to a mechanical watch movement provided with power reserve detection means.
  • a mechanical watch movement generally comprises a barrel system driving at least one wheel at the load outlet and one wheel at the discharge outlet connected respectively to a load wheel and to a differential discharge wheel.
  • a set of wheels in connection with an intermediate wheel of the differential controls a power reserve display, but no movement element is provided for a movement blocking operation when the power reserve is at zero.
  • the patent EP 0 568 499 B1 describes a power reserve indicator device for a mechanical watch.
  • the indicating device comprises at least one star wheel with an indicating member, which is rotated when charging or discharging the barrel.
  • the indicating element makes it possible to display the power reserve of the watch. However, nothing is provided to block the movement when the power reserve approaches zero.
  • the patent CH 698 752 B1 describes a timepiece, which includes a mechanism for indicating the power reserve. It includes two barrels facing each other and connected by a common shaft, which controls the power reserve display mechanism. However, nothing is provided to block the movement when the power reserve approaches zero.
  • the patent application CH 710 320 A2 describes a timepiece, which includes a source of mechanical energy, such as a barrel and a control member in conjunction with a control device in the watch case.
  • the control device comprises a power reserve wheel pivotally mounted on the frame and connected to the barrel by a differential so that the angular position of the power reserve wheel is a function of the load level of the barrel.
  • a control cam is pivotally mounted on the same axis as the power reserve wheel.
  • the control cam has a light extending in an arc of a circle in which is housed a dowel secured to the power reserve wheel.
  • a spiral spring is mounted between the power reserve wheel and the cam.
  • a stop device is also provided, which includes a stop rocker, to block the movement when the power reserve is close to zero.
  • the main object of the invention is therefore to overcome the drawbacks of the state of the art by proposing a mechanical clockwork movement provided with power reserve detection means and capable of blocking the operation of the movement when the power reserve is close to zero.
  • the present invention relates to a mechanical timepiece movement provided with power reserve detection means, which comprises the features of independent claim 1.
  • An advantage of the mechanical watch movement lies in the fact that it is possible, with the same element movable by the cam mobile, to control the indication of the power reserve and to carry out a blocking by the blocking member of the movement, when the power reserve is at zero. Even with the indication of the power reserve at zero, the barrel of the barrel system is still sufficiently charged to operate the watch movement. Advantageously, however, the mechanical clockwork movement is blocked for safety when the power reserve indication is at zero.
  • the Figures 1a and 1b represent a three-dimensional view from above of the components of the mechanical clockwork movement 1 in the normal operating position in figure 1a and in the movement blocking position in figure 1b .
  • the mechanical watch movement 1 comprises at least one barrel system, not shown, which is arranged, for example, on one face of a movement watch plate or of another support plate.
  • This barrel system can be a single barrel or two barrels or more than two well known barrels and having a charge outlet and a discharge outlet to drive a time base train.
  • the mechanical clockwork movement 1 comprises for example a differential 2, which is rotatably mounted about an axis of rotation, and connected respectively to the charge outlet and to the discharge outlet of the barrel system.
  • the differential 2 is connected directly or by means of a reduction stage or speed multiplier of rotation to the charge output and to the discharge output of the barrel system.
  • the differential 2 is connected via a speed reduction stage to the charge output and to the discharge output of the barrel system so as to reduce the rotation for the detection of the power reserve explained below.
  • the differential 2 comprises a first load wheel 2c and a second discharge wheel 2d preferably arranged on the same axis of rotation as the first load wheel.
  • the differential 2 also comprises an intermediate wheel 2i between the load wheel 2c and the discharge wheel 2d and in contact with the load wheel and the discharge wheel in particular by means of a ball bearing arrangement or roller.
  • the charging wheel 2c In normal operation of the timepiece movement after a charging operation of the barrel system, the charging wheel 2c remains fixed without rotation, while the discharge wheel 2d is in rotation. In this way, the intermediate wheel 2i is rotated in the same direction as the discharge wheel 2d, but with a lower speed of rotation than the speed of rotation of the discharge wheel 2d.
  • the intermediate wheel 2i of the differential 2 is connected to a cam mobile 4 for example by means of a speed reduction stage 3.
  • This reduction stage can be a drive wheel 3, the external toothed periphery of which can mesh with an external toothing of the intermediate wheel 2i, while a central pinion 3 'of smaller diameter comes into contact with the cam mobile 4.
  • This cam mobile 4 can also be a wheel 4, on which is fixedly fixed on the axis of rotation, a disc or at least one angular sector 4 'serving as cam for driving a movable element 5 for actuating a power reserve indicator.
  • the disc or the angular sector can come in one piece or be produced with the wheel of the mobile 4 in contact with the central pinion 3 'of the drive wheel 3.
  • the wheel of the mobile 4 and the central pinion 3' can be with teeth to mesh with each other.
  • the periphery of the disc or of the angular sector 4 defines a curve with a distance to the variable axis of rotation from a first end of the disc or of the angular sector 4' to a second end of the disc or of the angular sector.
  • the radius or the distance to the axis of rotation of the periphery of the disc or the angular sector is variable from the first end to the second end.
  • the distance to the axis of rotation can decrease at least over part of the disc or of the angular sector between the first end and the second end and in a regular manner.
  • the distance d1 to the axis of rotation of the first end of the disc or of the angular sector is greater than the distance d2 to the axis of rotation of the second end of the disc or of the angular sector 4 'to control a blocking of the movement .
  • the movable element 5 comprises a wedge 15 for coming into contact with the periphery of the disc or the angular sector 4 ′ by being pushed against the periphery by a spring 6 as shown in Figures 1a and 1b .
  • This spring 6 pushes against a lateral surface the displaceable element 5 towards the periphery of the disc or of the angular sector 4 '.
  • This movable element 5 can be rotatably mounted around an axis of rotation.
  • the movable element 5 can be in the form of a rake of planar shape, but any other shape can be envisaged for this movable element.
  • a power reserve indicator 7 is thus provided to display a full charge indication.
  • This power reserve indicator comprises a display wheel 7 possibly with a needle (not shown) fixed on the axis of rotation of the display wheel 7.
  • the display wheel 7 is for example driven in rotation in contact with a inner surface of an oblong opening 17 of the rake 5 at a distance from its axis of rotation.
  • the display wheel 7 can be toothed to mesh with an internal toothing of the oblong opening 17 of the rake 5.
  • the radius or the distance from the corner 15 of the rake 5 in contact with the center of rotation is the smallest at the second end of the disc or of the angular sector.
  • the rake 5 comprises a blocking part 15 'coming into contact with a blocking member 10.
  • This blocking member 10 is connected directly to the discharge outlet of the barrel system or to the discharge wheel 2d of differential 2 to block the watch movement, when the power reserve (RDM) is at zero.
  • This locking member 10 is a movable intermediate between the discharge outlet wheel of the barrel system and the discharge wheel 2d of the differential and can also act as a reduction stage. It can also be envisaged to have the locking member 10 linked to other wheels of a reduction stage from the discharge outlet of the barrel system to the discharge wheel 2d of the differential 2.
  • the blocking 10 takes the form of a rod 11 with a toothed portion or not, which is rotatably mounted. This wheel-shaped portion 11 ′ on the rod 11 can come into contact with an output wheel of the barrel system or preferably of the discharge wheel 2d of the differential 2. At least one tooth 12 ′ on the locking member 10 rotatably mounted is intended to be hooked by a notch 15 'of the blocking portion of the rake 5, when the power reserve is at zero.
  • the locking member 10 therefore comprises a star-shaped wheel 12 for example with three teeth 12 ', which is fixed to the rod 11 above the wheel-shaped portion 11' mounted on the rod 11 in contact with the discharge wheel 2d of the differential 2.
  • the number of locking teeth provided is not important provided that one of the teeth comes into contact with the notch 15 ′ of the locking portion of the rake 5.
  • the mechanical clockwork movement with power reserve detection means can be designed by a person skilled in the art without departing from the scope of the invention defined by the claims. It can be provided that the movable element for actuating the power reserve indicator and coming into contact with the locking member when the power reserve is at zero is moved in a rectilinear manner and not in a rotary manner by the mobile to cam.
  • the clockwork movement can be in the form of a module with all the elements arranged in said module.

Description

DOMAINE TECHNIQUETECHNICAL AREA

La présente invention concerne un mouvement d'horlogerie mécanique muni de moyens de détection de réserve de marche.The present invention relates to a mechanical watch movement provided with power reserve detection means.

ARRIERE-PLAN TECHNOLOGIQUETECHNOLOGICAL BACKGROUND

Un mouvement d'horlogerie mécanique comprend généralement un système à barillet entraînant au moins une roue en sortie de charge et une roue en sortie de décharge reliées respectivement à une roue de charge et à une roue de décharge d'un différentiel. Un ensemble de roues en liaison à une roue intermédiaire du différentiel contrôle un affichage de réserve de marche, mais aucun élément du mouvement n'est prévu pour une opération de blocage du mouvement quand la réserve de marche est à zéro.A mechanical watch movement generally comprises a barrel system driving at least one wheel at the load outlet and one wheel at the discharge outlet connected respectively to a load wheel and to a differential discharge wheel. A set of wheels in connection with an intermediate wheel of the differential controls a power reserve display, but no movement element is provided for a movement blocking operation when the power reserve is at zero.

Le brevet EP 0 568 499 B1 décrit un dispositif indicateur de réserve de marche pour une montre mécanique. Le dispositif indicateur comprend au moins une roue-étoile avec un organe indicateur, qui est entraînée en rotation lors de la charge ou la décharge du barillet. L'organe indicateur permet d'afficher la réserve de marche de la montre. Cependant rien n'est prévu pour assurer un blocage du mouvement, quand la réserve de marche s'approche de zéro.The patent EP 0 568 499 B1 describes a power reserve indicator device for a mechanical watch. The indicating device comprises at least one star wheel with an indicating member, which is rotated when charging or discharging the barrel. The indicating element makes it possible to display the power reserve of the watch. However, nothing is provided to block the movement when the power reserve approaches zero.

Le brevet CH 698 752 B1 décrit une pièce d'horlogerie, qui comprend un mécanisme d'indication de la réserve de marche. Elle comprend deux barillets en regard l'un de l'autre et reliés par un arbre commun, qui contrôle le mécanisme d'affichage de la réserve de marche. Cependant rien n'est prévu pour assurer un blocage du mouvement, quand la réserve de marche s'approche de zéro.The patent CH 698 752 B1 describes a timepiece, which includes a mechanism for indicating the power reserve. It includes two barrels facing each other and connected by a common shaft, which controls the power reserve display mechanism. However, nothing is provided to block the movement when the power reserve approaches zero.

La demande de brevet CH 710 320 A2 décrit une pièce d'horlogerie, qui comprend une source d'énergie mécanique, telle qu'un barillet et un organe de commande en liaison avec un dispositif de commande dans la boîte de montre. Le dispositif de commande comporte une roue de réserve de marche montée pivotante sur le bâti et reliée au barillet par un différentiel pour que la position angulaire de la roue de réserve de marche soit fonction du niveau de charge du barillet. Une came de commande est montée pivotante sur le même axe que la roue de réserve de marche. La came de commande a une lumière s'étendant en arc de cercle dans laquelle est logée une cheville solidaire de la roue de réserve de marche. Un ressort spiral est monté entre la roue de réserve de marche et la came. En liaison avec le dispositif de commande, il est encore prévu un dispositif d'arrêt, qui comprend une bascule d'arrêt, pour bloquer le mouvement quand la réserve de marche est proche de zéro.The patent application CH 710 320 A2 describes a timepiece, which includes a source of mechanical energy, such as a barrel and a control member in conjunction with a control device in the watch case. The control device comprises a power reserve wheel pivotally mounted on the frame and connected to the barrel by a differential so that the angular position of the power reserve wheel is a function of the load level of the barrel. A control cam is pivotally mounted on the same axis as the power reserve wheel. The control cam has a light extending in an arc of a circle in which is housed a dowel secured to the power reserve wheel. A spiral spring is mounted between the power reserve wheel and the cam. In connection with the control device, a stop device is also provided, which includes a stop rocker, to block the movement when the power reserve is close to zero.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

L'invention a donc pour but principal de pallier les inconvénients de l'état de la technique en proposant un mouvement d'horlogerie mécanique muni de moyens de détection de réserve de marche et capable de bloquer le fonctionnement du mouvement, quand la réserve de marche est proche de zéro.The main object of the invention is therefore to overcome the drawbacks of the state of the art by proposing a mechanical clockwork movement provided with power reserve detection means and capable of blocking the operation of the movement when the power reserve is close to zero.

A cet effet, la présente invention concerne un mouvement d'horlogerie mécanique muni de moyens de détection de réserve de marche, qui comprend les caractéristiques de la revendication indépendante 1.To this end, the present invention relates to a mechanical timepiece movement provided with power reserve detection means, which comprises the features of independent claim 1.

Des formes particulières d'exécution du mouvement d'horlogerie mécanique sont définies dans les revendications dépendantes 2 à 10.Particular embodiments of the mechanical clockwork movement are defined in dependent claims 2 to 10.

Un avantage du mouvement d'horlogerie mécanique réside dans le fait qu'il est possible avec un même élément déplaçable par le mobile à came de commander l'indication de la réserve de marche et d'effectuer un blocage par l'organe de blocage du mouvement, quand la réserve de marche est à zéro. Même avec l'indication de la réserve de marche à zéro, le barillet du système à barillet est encore suffisamment chargé pour faire fonctionner le mouvement d'horlogerie. Cependant avantageusement, le mouvement d'horlogerie mécanique est bloqué par sécurité quand l'indication de réserve de marche est à zéro.An advantage of the mechanical watch movement lies in the fact that it is possible, with the same element movable by the cam mobile, to control the indication of the power reserve and to carry out a blocking by the blocking member of the movement, when the power reserve is at zero. Even with the indication of the power reserve at zero, the barrel of the barrel system is still sufficiently charged to operate the watch movement. Advantageously, however, the mechanical clockwork movement is blocked for safety when the power reserve indication is at zero.

BREVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

Les buts, avantages et caractéristiques d'un mouvement d'horlogerie mécanique muni de moyens de détection de réserve de marche apparaîtront mieux dans la description suivante de manière non limitative en regard des dessins sur lesquels :

  • les figures 1a et 1b représentent une vue tridimensionnelle de dessus d'une forme d'exécution d'un mouvement d'horlogerie mécanique muni de moyens de détection de réserve de marche selon l'invention,
  • la figure 2 représente une vue de dessus du mobile à came du mouvement d'horlogerie mécanique selon l'invention, et
  • la figure 3 représente l'organe de blocage en contact de l'élément déplaçable pour le blocage du mouvement d'horlogerie mécanique lorsque la réserve de marche est à zéro selon l'invention.
The aims, advantages and characteristics of a mechanical clockwork movement provided with power reserve detection means will appear more clearly in the following description in a nonlimiting manner with reference to the drawings in which:
  • the Figures 1a and 1b represent a three-dimensional view from above of an embodiment of a mechanical timepiece movement provided with power reserve detection means according to the invention,
  • the figure 2 shows a top view of the cam mobile of the mechanical clockwork movement according to the invention, and
  • the figure 3 shows the blocking member in contact with the movable element for blocking the mechanical clockwork movement when the power reserve is at zero according to the invention.

DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

Dans la description suivante, tous les composants d'un mouvement d'horlogerie mécanique muni de moyens de détection de réserve de marche, qui sont bien connus d'un homme du métier dans ce domaine technique ne sont relatés que de manière simplifiée.In the following description, all the components of a mechanical watch movement fitted with power reserve detection means, which are well known to a person skilled in the art in this technical field, are only reported in a simplified manner.

Les figures 1a et 1b représentent une vue tridimensionnelle de dessus des composants du mouvement d'horlogerie mécanique 1 en position de fonctionnement normal en figure 1a et en position de blocage du mouvement en figure 1b. Le mouvement d'horlogerie mécanique 1 comprend au moins un système à barillet non représenté, qui est disposé par exemple sur une face d'une platine de montre du mouvement ou d'une autre plaque support. Ce système à barillet peut être à simple barillet ou à deux barillets ou plus de deux barillets bien connus et disposant d'une sortie de charge et d'une sortie de décharge pour entraîner un rouage de base de temps.The Figures 1a and 1b represent a three-dimensional view from above of the components of the mechanical clockwork movement 1 in the normal operating position in figure 1a and in the movement blocking position in figure 1b . The mechanical watch movement 1 comprises at least one barrel system, not shown, which is arranged, for example, on one face of a movement watch plate or of another support plate. This barrel system can be a single barrel or two barrels or more than two well known barrels and having a charge outlet and a discharge outlet to drive a time base train.

Le mouvement d'horlogerie mécanique 1 comprend par exemple un différentiel 2, qui est monté rotatif autour d'un axe de rotation, et relié respectivement à la sortie de charge et à la sortie de décharge du système à barillet. Le différentiel 2 est relié directement ou par l'intermédiaire d'un étage réducteur ou multiplicateur de vitesse de rotation à la sortie de charge et à la sortie de décharge du système à barillet. De préférence, le différentiel 2 est relié par l'intermédiaire d'un étage réducteur de vitesse de rotation à la sortie de charge et à la sortie de décharge du système à barillet de manière à réduire la rotation pour la détection de la réserve de marche expliquée ci-après.The mechanical clockwork movement 1 comprises for example a differential 2, which is rotatably mounted about an axis of rotation, and connected respectively to the charge outlet and to the discharge outlet of the barrel system. The differential 2 is connected directly or by means of a reduction stage or speed multiplier of rotation to the charge output and to the discharge output of the barrel system. Preferably, the differential 2 is connected via a speed reduction stage to the charge output and to the discharge output of the barrel system so as to reduce the rotation for the detection of the power reserve explained below.

Le différentiel 2 comprend une première roue de charge 2c et une seconde roue de décharge 2d disposée de préférence sur un même axe de rotation que la première roue de charge. Le différentiel 2 comprend encore, une roue intermédiaire 2i entre la roue de charge 2c et la roue de décharge 2d et en contact de la roue de charge et de la roue de décharge notamment par l'intermédiaire d'un agencement à roulement à billes ou à rouleaux.The differential 2 comprises a first load wheel 2c and a second discharge wheel 2d preferably arranged on the same axis of rotation as the first load wheel. The differential 2 also comprises an intermediate wheel 2i between the load wheel 2c and the discharge wheel 2d and in contact with the load wheel and the discharge wheel in particular by means of a ball bearing arrangement or roller.

Dans un fonctionnement normal du mouvement d'horlogerie après une opération de charge du système à barillet, la roue de charge 2c reste fixe sans rotation, alors que la roue de décharge 2d est en rotation. De cette manière, la roue intermédiaire 2i est entraînée en rotation dans une même direction que la roue de décharge 2d, mais avec une vitesse de rotation plus petite que la vitesse de rotation de la roue de décharge 2d.In normal operation of the timepiece movement after a charging operation of the barrel system, the charging wheel 2c remains fixed without rotation, while the discharge wheel 2d is in rotation. In this way, the intermediate wheel 2i is rotated in the same direction as the discharge wheel 2d, but with a lower speed of rotation than the speed of rotation of the discharge wheel 2d.

La roue intermédiaire 2i du différentiel 2 est reliée à un mobile à came 4 par exemple par l'intermédiaire d'un étage réducteur de vitesse de rotation 3. Cet étage réducteur peut être une roue d'entraînement 3, dont la périphérie extérieure dentée peut engrener avec une denture extérieure de la roue intermédiaire 2i, alors qu'un pignon central 3' de diamètre inférieur vient en contact du mobile à came 4. Ce mobile à came 4 peut être également une roue 4, sur laquelle est disposé, fixement sur l'axe de rotation, un disque ou au moins un secteur angulaire 4' faisant office de came pour entraîner un élément déplaçable 5 pour l'actionnement d'un indicateur de réserve de marche. Le disque ou le secteur angulaire peut venir de matière ou être réalisé avec la roue du mobile 4 en contact du pignon central 3' de la roue d'entraînement 3. La roue du mobile 4 et le pignon central 3' peuvent être avec une denture pour engrener l'un avec l'autre.The intermediate wheel 2i of the differential 2 is connected to a cam mobile 4 for example by means of a speed reduction stage 3. This reduction stage can be a drive wheel 3, the external toothed periphery of which can mesh with an external toothing of the intermediate wheel 2i, while a central pinion 3 'of smaller diameter comes into contact with the cam mobile 4. This cam mobile 4 can also be a wheel 4, on which is fixedly fixed on the axis of rotation, a disc or at least one angular sector 4 'serving as cam for driving a movable element 5 for actuating a power reserve indicator. The disc or the angular sector can come in one piece or be produced with the wheel of the mobile 4 in contact with the central pinion 3 'of the drive wheel 3. The wheel of the mobile 4 and the central pinion 3' can be with teeth to mesh with each other.

Comme représenté à la figure 2, la périphérie du disque ou du secteur angulaire 4' définit une courbe avec une distance à l'axe de rotation variable depuis une première extrémité du disque ou du secteur angulaire 4' à une seconde extrémité du disque ou du secteur angulaire. Le rayon ou la distance à l'axe de rotation de la périphérie du disque ou du secteur angulaire est variable de la première extrémité à la seconde extrémité. De préférence, la distance à l'axe de rotation peut décroître au moins sur une partie du disque ou du secteur angulaire entre la première extrémité et la seconde extrémité et de manière régulière. La distance d1 à l'axe de rotation de la première extrémité du disque ou du secteur angulaire est plus grande que la distance d2 à l'axe de rotation de la seconde extrémité du disque ou du secteur angulaire 4' pour contrôler un blocage du mouvement.As shown in the figure 2 , the periphery of the disc or of the angular sector 4 'defines a curve with a distance to the variable axis of rotation from a first end of the disc or of the angular sector 4' to a second end of the disc or of the angular sector. The radius or the distance to the axis of rotation of the periphery of the disc or the angular sector is variable from the first end to the second end. Preferably, the distance to the axis of rotation can decrease at least over part of the disc or of the angular sector between the first end and the second end and in a regular manner. The distance d1 to the axis of rotation of the first end of the disc or of the angular sector is greater than the distance d2 to the axis of rotation of the second end of the disc or of the angular sector 4 'to control a blocking of the movement .

L'élément déplaçable 5 comprend un coin 15 pour venir en contact de la périphérie du disque ou du secteur angulaire 4' en étant poussé contre la périphérie par un ressort 6 comme montré aux figures 1a et 1b. Ce ressort 6 pousse contre une surface latérale l'élément déplaçable 5 vers la périphérie du disque ou du secteur angulaire 4'. Cet élément déplaçable 5 peut être monté rotatif autour d'un axe de rotation. Comme représenté aux figures 1a et 1b, l'élément déplaçable 5 peut être sous la forme d'un râteau de forme plane, mais il peut être envisagé toute autre forme pour cet élément déplaçable.The movable element 5 comprises a wedge 15 for coming into contact with the periphery of the disc or the angular sector 4 ′ by being pushed against the periphery by a spring 6 as shown in Figures 1a and 1b . This spring 6 pushes against a lateral surface the displaceable element 5 towards the periphery of the disc or of the angular sector 4 '. This movable element 5 can be rotatably mounted around an axis of rotation. As shown in Figures 1a and 1b , the movable element 5 can be in the form of a rake of planar shape, but any other shape can be envisaged for this movable element.

Lorsque le ou les barillets du système à barillet sont en pleine charge, le coin 15 du râteau 5 vient en contact d'une butée 14 de la première extrémité du disque ou du secteur angulaire 4', où le rayon ou la distance au centre de rotation est le plus grand. Un indicateur de réserve de marche 7 est ainsi prévu pour afficher une indication de charge complète. Cet indicateur de réserve de marche comprend une roue d'affichage 7 avec éventuellement une aiguille non représentée fixée sur l'axe de rotation de la roue d'affichage 7. La roue d'affichage 7 est par exemple entraînée en rotation en contact avec une surface intérieure d'une ouverture 17 de forme oblongue du râteau 5 à distance de son axe de rotation. La roue d'affichage 7 peut être dentée pour engrener avec une denture intérieure de l'ouverture 17 de forme oblongue du râteau 5.When the barrel (s) of the barrel system are fully loaded, the corner 15 of the rake 5 comes into contact with a stop 14 of the first end of the disc or of the angular sector 4 ′, where the radius or the distance to the center of rotation is the greatest. A power reserve indicator 7 is thus provided to display a full charge indication. This power reserve indicator comprises a display wheel 7 possibly with a needle (not shown) fixed on the axis of rotation of the display wheel 7. The display wheel 7 is for example driven in rotation in contact with a inner surface of an oblong opening 17 of the rake 5 at a distance from its axis of rotation. The display wheel 7 can be toothed to mesh with an internal toothing of the oblong opening 17 of the rake 5.

Lorsque la réserve de marche s'approche de zéro, le rayon ou la distance du coin 15 du râteau 5 en contact au centre de rotation est le plus petit à la seconde extrémité du disque ou du secteur angulaire. Dans ce cas de figure, le râteau 5 comprend une partie de blocage 15' venant en contact d'un organe de blocage 10. Cet organe de blocage 10 est lié directement en sortie de décharge du système à barillet ou à la roue de décharge 2d du différentiel 2 pour bloquer le mouvement de montre, quand la réserve de marche (RDM) est à zéro.When the power reserve approaches zero, the radius or the distance from the corner 15 of the rake 5 in contact with the center of rotation is the smallest at the second end of the disc or of the angular sector. In this case, the rake 5 comprises a blocking part 15 'coming into contact with a blocking member 10. This blocking member 10 is connected directly to the discharge outlet of the barrel system or to the discharge wheel 2d of differential 2 to block the watch movement, when the power reserve (RDM) is at zero.

Cet organe de blocage 10 est un mobile intermédiaire entre la roue de sortie de décharge du système à barillet et la roue de décharge 2d du différentiel et peut faire office également d'étage réducteur. Il peut être envisagé aussi d'avoir l'organe de blocage 10 lié à d'autres roues d'un étage réducteur depuis la sortie de décharge du système à barillet jusqu'à la roue de décharge 2d du différentiel 2. L'organe de blocage 10 prend la forme d'une tige 11 avec une portion dentée ou non, qui est montée rotative. Cette portion en forme de roue 11' sur la tige 11 peut venir en contact d'une roue de sortie du système à barillet ou préférentiellement de la roue de décharge 2d du différentiel 2. Au moins une dent 12' sur l'organe de blocage 10 monté rotatif est prévue pour être accrochée par un cran 15' de la partie de blocage du râteau 5, lorsque la réserve de marche est à zéro.This locking member 10 is a movable intermediate between the discharge outlet wheel of the barrel system and the discharge wheel 2d of the differential and can also act as a reduction stage. It can also be envisaged to have the locking member 10 linked to other wheels of a reduction stage from the discharge outlet of the barrel system to the discharge wheel 2d of the differential 2. The blocking 10 takes the form of a rod 11 with a toothed portion or not, which is rotatably mounted. This wheel-shaped portion 11 ′ on the rod 11 can come into contact with an output wheel of the barrel system or preferably of the discharge wheel 2d of the differential 2. At least one tooth 12 ′ on the locking member 10 rotatably mounted is intended to be hooked by a notch 15 'of the blocking portion of the rake 5, when the power reserve is at zero.

Sur les figures 1a et 1b et 4, l'organe de blocage 10 comprend donc une roue en forme d'étoile 12 par exemple avec trois dents 12', qui est fixée sur la tige 11 au-dessus de la portion en forme de roue 11' montée sur la tige 11 en contact de la roue de décharge 2d du différentiel 2. Cependant le nombre de dents de blocage prévu n'est pas important pour autant qu'une des dents vienne en contact du cran 15' de la partie de blocage du râteau 5.On the Figures 1a and 1b and 4, the locking member 10 therefore comprises a star-shaped wheel 12 for example with three teeth 12 ', which is fixed to the rod 11 above the wheel-shaped portion 11' mounted on the rod 11 in contact with the discharge wheel 2d of the differential 2. However, the number of locking teeth provided is not important provided that one of the teeth comes into contact with the notch 15 ′ of the locking portion of the rake 5.

A partir de la description qui vient d'être faite, plusieurs variantes de réalisation du mouvement mécanique d'horlogerie à moyens de détection de réserve de marche peuvent être conçues par l'homme du métier sans sortir du cadre de l'invention définie par les revendications. Il peut être prévu que l'élément déplaçable pour actionner l'indicateur de réserve de marche et venir en contact de l'organe de blocage lorsque la réserve de marche est à zéro soit déplacé de manière rectiligne et non de manière rotative par le mobile à came. Le mouvement d'horlogerie peut se présenter sous la forme d'un module avec tous les éléments disposés dans ledit module.From the description which has just been made, several alternative embodiments of the mechanical clockwork movement with power reserve detection means can be designed by a person skilled in the art without departing from the scope of the invention defined by the claims. It can be provided that the movable element for actuating the power reserve indicator and coming into contact with the locking member when the power reserve is at zero is moved in a rectilinear manner and not in a rotary manner by the mobile to cam. The clockwork movement can be in the form of a module with all the elements arranged in said module.

Claims (10)

  1. Mechanical timepiece movement (1) with power reserve indication, comprising at least one barrel system connected to a winding wheel (2c) of a differential gear (2) and an unwinding wheel (2d) of the differential gear (2), an intermediate wheel (2i) of the differential gear (2) being connected to at least one cam wheel set (4) for the driving thereof in rotation, a movable element (5) in contact with the cam wheel set (4) acting on an indicator (7) of the power reserve to be displayed,
    wherein the movable element (5) is arranged to move and actuate a locking member (10) to lock the movement at an unwinding output of the barrel system or in contact with the unwinding wheel (2d) of the differential gear (2), when the power reserve indicator indicates zero, and
    the cam wheel set (4) includes a wheel to be driven in rotation through a rotational speed reducing stage (3) disposed between the intermediate wheel (2i) and a wheel of the cam wheel set (4), and a cam (4') above the wheel of the cam wheel set (4) for contact with a corner (15) of the movable element (5).
  2. Mechanical timepiece movement (1) according to claim 1, characterized in that the reducing stage (3) includes a drive wheel (3) in contact with the intermediate wheel (2i) of the differential gear (2), and in that a central pinion (3') of the drive wheel (3) is in contact with the wheel of the cam wheel set (4).
  3. Mechanical timepiece movement (1) according to claim 1, characterized in that the cam (4') of the cam wheel set (4) is a disc or an angular sector, disposed on the axis of rotation of the wheel of the cam wheel set (4), the distance from the axis of rotation to the periphery of the disc or of the angular sector (4') in contact with the corner (15) of the movable element (5) decreasing between a first end and a second end of the disc or of the angular sector so as to move the movable element (5) between a position of complete winding and a position locking the movement.
  4. Mechanical timepiece movement (1) according to claim 3, characterized in that the cam (4') includes a stop (14) at the first end, where the distance to the axis of rotation is greatest and against which the corner (15) of the movable element (5) presses in the completely wound position of the barrel system.
  5. Mechanical timepiece movement (1) according to claim 3, characterized in that the periphery of the disc-shaped cam 4' defines a curve with a distance to the axis of rotation that is variable from the first end of the disc to the second end of the disc.
  6. Mechanical timepiece movement (1) according to claim 3, characterized in that the movable element (5) is a rack mounted for rotation about an axis of rotation.
  7. Mechanical timepiece movement (1) according to claim 6, characterized in that the rack (5) is pushed against the cam wheel set (4) via a spring (6).
  8. Mechanical timepiece movement (1) according to claim 6, characterized in that the rack (5) includes an aperture (17) of oblong shape inside which is placed a wheel (7) of the power reserve indicator, the indicator wheel (7) being in contact with an inner surface of the aperture (17) so as to be driven in rotation by the motion of the rack (5) pushed by the cam wheel set (4).
  9. Mechanical timepiece movement (1) according to claim 6, characterized in that the rack (5) is of flat shape with a catch (15') on a locking part that comes into contact with the locking member (10) in a locking position, when the corner (15) of the rack (5) is at the second end of the disc or of the angular sector of the cam (4').
  10. Mechanical timepiece movement (1) according to claim 1, characterized in that the locking member (10) includes an arbor (11) mounted for rotation and with a wheel-shaped portion in contact with an unwinding output wheel (2d) of the barrel system or with the unwinding wheel of the differential gear (2), and in that the locking member (10) includes a star wheel (12) with at least one locking tooth (12') fixed on the arbor (11) to be hooked in the movement locking position by a catch (15') of the movable element (5), when the power reserve is at zero.
EP16192232.3A 2016-10-04 2016-10-04 Mechanical clock movement with power-reserve detection Active EP3306415B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP16192232.3A EP3306415B1 (en) 2016-10-04 2016-10-04 Mechanical clock movement with power-reserve detection
JP2017184573A JP6411608B2 (en) 2016-10-04 2017-09-26 Mechanical timer movement with power reserve detection
CN201710888573.6A CN107894700B (en) 2016-10-04 2017-09-27 Mechanical timepiece movement with power reserve detection
US15/724,833 US10162309B2 (en) 2016-10-04 2017-10-04 Mechanical timepiece movement with power reserve detection
HK18111499.3A HK1252110A1 (en) 2016-10-04 2018-09-06 Mechanical timepiece movement with power reserve detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16192232.3A EP3306415B1 (en) 2016-10-04 2016-10-04 Mechanical clock movement with power-reserve detection

Publications (2)

Publication Number Publication Date
EP3306415A1 EP3306415A1 (en) 2018-04-11
EP3306415B1 true EP3306415B1 (en) 2020-05-20

Family

ID=57047125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16192232.3A Active EP3306415B1 (en) 2016-10-04 2016-10-04 Mechanical clock movement with power-reserve detection

Country Status (5)

Country Link
US (1) US10162309B2 (en)
EP (1) EP3306415B1 (en)
JP (1) JP6411608B2 (en)
CN (1) CN107894700B (en)
HK (1) HK1252110A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3333637B1 (en) * 2016-12-12 2021-09-22 ETA SA Manufacture Horlogère Suisse Mechanical clock movement with power reserve detection
EP3627233B1 (en) * 2018-09-19 2022-03-30 ETA SA Manufacture Horlogère Suisse Timepiece power reserve indicator mechanism
EP3992727A1 (en) * 2020-10-30 2022-05-04 ETA SA Manufacture Horlogère Suisse Mechanical clock movement with running reserve detection

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0568499B1 (en) 1992-04-29 1997-05-21 Exidel Sa Device for displaying the power-reserve of a watch
ATE428958T1 (en) * 1999-08-04 2009-05-15 Piguet Frederic Sa DEVICE FOR DISPLAYING THE POWER RESERVE OF A WATCH
CH698752B1 (en) 2004-11-10 2009-10-15 Frank Mueller Watchland S A Timepiece with indication of the power reserve mechanism.
DE602005011433D1 (en) * 2005-09-01 2009-01-15 Montres Journe S A Clock with a timekeeping device by bell
CH704672A2 (en) * 2011-03-22 2012-09-28 Montres Breguet Sa Selective stop mechanism for striking work of watch, has isolation mobile for controlling position of blocking lever and releasing/prohibiting movement of striking work control rod and/or authorizing/prohibiting impact of hammer on gong
EP2560057B1 (en) * 2011-08-17 2014-04-02 ETA SA Manufacture Horlogère Suisse Timepiece movement with reduced height and large power reserve
CH710320B1 (en) * 2014-10-31 2018-06-29 Red & White Intellectual Property Man Sa Timepiece comprising a source of mechanical energy and a control member.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN107894700B (en) 2019-12-06
CN107894700A (en) 2018-04-10
US10162309B2 (en) 2018-12-25
HK1252110A1 (en) 2019-05-17
JP2018059920A (en) 2018-04-12
JP6411608B2 (en) 2018-10-24
EP3306415A1 (en) 2018-04-11
US20180095422A1 (en) 2018-04-05

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