EP3333637B1 - Mechanical clock movement with power reserve detection - Google Patents

Mechanical clock movement with power reserve detection Download PDF

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Publication number
EP3333637B1
EP3333637B1 EP16203366.6A EP16203366A EP3333637B1 EP 3333637 B1 EP3333637 B1 EP 3333637B1 EP 16203366 A EP16203366 A EP 16203366A EP 3333637 B1 EP3333637 B1 EP 3333637B1
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EP
European Patent Office
Prior art keywords
wheel
crown
timepiece movement
power reserve
locking member
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.)
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Application number
EP16203366.6A
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German (de)
French (fr)
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EP3333637A1 (en
Inventor
Ivan Villar
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 EP16203366.6A priority Critical patent/EP3333637B1/en
Priority to US15/791,637 priority patent/US10444705B2/en
Priority to JP2017206820A priority patent/JP6442586B2/en
Priority to CN201711306170.2A priority patent/CN108227452B/en
Publication of EP3333637A1 publication Critical patent/EP3333637A1/en
Priority to HK18115291.4A priority patent/HK1256246A1/en
Application granted granted Critical
Publication of EP3333637B1 publication Critical patent/EP3333637B1/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
    • 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
    • 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
    • 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
    • G04B9/02—Devices controlled by such state, e.g. device affording protection means against overwinding

Definitions

  • the present invention relates to a mechanical timepiece movement provided with power reserve detection means.
  • the clockwork movement comprises at least one barrel system in connection with a load wheel of a differential and a load wheel of the differential.
  • a mechanical clockwork 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 discharge wheel of a differential.
  • a set of wheels linked to 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 indicator device comprises at least one star wheel with an indicator member, which is rotated during the charging or discharging of the barrel.
  • the indicator organ is used to display the power reserve of the watch. However, nothing is planned to ensure that the movement is blocked when the power reserve approaches zero.
  • the patent CH 698 752 B1 describes a timepiece, which includes a power reserve indication mechanism. It comprises two barrels facing each other and connected by a common shaft, which controls the power reserve display mechanism. However, nothing is planned to ensure that the movement is blocked when the power reserve approaches zero.
  • This timepiece comprises a barrel system mounted between a watch plate and a bridge.
  • the power reserve indicator device comprises a differential connected by a first input to the barrel shaft and by a second input to the barrel.
  • the differential is arranged coaxially with the barrel shaft.
  • the output of the barrel is connected to a power reserve indicator device.
  • the patent application EP 1 139 182 A1 describes a power reserve indicator mechanism and a watch.
  • the mechanism comprises a barrel system linked to a load wheel and to a discharge wheel of a differential, and a power reserve indicator linked to the differential.
  • a locking member in the form of a banana-shaped opening is provided on an upper wheel of the indicator and a locking element linked to a parallel lower wheel of the indicator mobile is inserted into the opening made on the upper wheel of the indicator. the indicator.
  • the blocking element comes into contact with one end of the opening so as to block the movement at the zero power reserve.
  • Such an arrangement includes too many parts for the power reserve indication, which is a drawback.
  • the patent application EP 2 977 828 A1 describes a power reserve indicator for displaying the power reserve of several energy accumulators, each of which comprises an indicator cooperating with an input of a differential mechanism which said indicator comprises. An output of the differential mechanism cooperates with a display mechanism of the total power reserve of the energy accumulators. Nothing is planned to ensure that the movement is blocked when the power reserve approaches zero.
  • the main aim of the invention is therefore to overcome the drawbacks of the state of the art by proposing a mechanical timepiece 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 characteristics of independent claim 1.
  • An advantage of the mechanical clockwork movement lies in the fact that it comprises a differential in connection with the barrel system via a driving wheel set and a set of wheels with one or two reduction stages.
  • the differential comprises a crown on which are mounted in a coaxial manner a sun gear of a power reserve indicator, and a chassis wheel mounted on an axial rod of the sun gear.
  • a locking element is mounted on the chassis wheel to come into contact with a locking member of the crown in a position for detecting the power reserve at zero to be indicated.
  • the locking element is a satellite wheel driven in rotation by an inner surface of the edge of the crown.
  • a locking member in the form of a notch or of a truncated toothing portion is provided to lock the satellite wheel in a minimum power reserve position, which also blocks the clockwork movement.
  • Another blocking member can also be provided to block the satellite wheel in a position of maximum power reserve.
  • the figure 1 represents a three-dimensional view from above of certain components of the mechanical clockwork movement 1.
  • the mechanical clockwork movement 1 comprises at least one barrel system, which can be with a single barrel or with two barrels 2, 3 as shown and well known , and having a charge output and a discharge output for driving in particular a time base gear, not shown.
  • the mechanical clockwork movement 1 comprises a differential 10 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 10 is preferably connected by means of a reduction stage or speed reduction chain to the charge output from the first barrel 2 and to the discharge output from the second barrel 3.
  • a mobile of drive 4 between the barrel system 2, 3 and the differential 10 can be provided.
  • This drive wheel set 4 can comprise a central rod 4a and a ring 4b arranged around the rod in a coaxial manner.
  • the ring 4b is held on an intermediate part of the central rod 4a between two flanges of the central rod 4a while allowing the ring to rotate around the central rod.
  • the diameter of the flanges or of the two ends of the rod 4a can be identical to the outside diameter of the ring 4b.
  • the load output wheel of the first barrel 2 is in contact with a first flange or first end of the central rod 4a to drive it in rotation.
  • the load output wheel of the first barrel 2 may include toothing to mesh with a toothing of the first flange or first end of the central rod 4a.
  • the discharge output wheel of the second barrel 3 is a contact of the ring 4b to drive it in rotation.
  • the discharge output wheel of the second barrel 3 may include toothing to mesh with a toothing of the ring 4b.
  • the drive mobile 4 rotates a set of wheels 5, 6, 7, 8 of a reduction stage between the barrel system 2, 3 and the differential 10.
  • the rod 4a of the driving mobile unit drives by its second flange, the set of wheels 5a, 6, 7a of a first reduction stage, the third wheel 7a of which is in contact with a first load wheel 10a of the differential 10 , which is a chassis wheel in the form of a flywheel.
  • the ring 4b of the drive mobile 4 drives the set of wheels 5b, 8 and 7b of a second reduction stage, the third wheel 7b of which is in contact with a ring 10b of the differential 10.
  • the ring gear 10b is preferably arranged coaxially with the chassis wheel 10a.
  • the differential 10 therefore comprises a crown 10b, a chassis wheel 10a coaxial with the crown and a sun pinion 12 with an axial rod 12 'as a power reserve indicator.
  • the axial rod 12 'passes through a central opening of the chassis wheel 10a and can be connected to a power reserve indicating hand, not shown.
  • the sun gear 12 is placed on a base of the crown 10b between the frame wheel 10a and the crown 10b and is coaxial with the frame wheel 10a and the crown 10b.
  • the outside diameter of the crown 10b is similar to the outside diameter of the chassis wheel 10a, while the diameter of the sun gear 12 is smaller to be placed inside the peripheral edge of the crown 10b.
  • the differential 10 further comprises at least one movement blocking member 13, 14 linked to the crown 10b and preferably to the peripheral edge of the crown to cooperate with at least one locking element 11 in connection with the chassis wheel 10a to block the clockwork movement in a zero power reserve position of the barrel system, or even also in a maximum load position of the barrel system.
  • the chassis wheel 10a of the differential 10 comprises as a locking element at least one satellite wheel 11 rotatably mounted on an axial branch of the chassis wheel 10a.
  • This satellite wheel 11 is in contact with a circular inner surface of the peripheral edge of the crown 10b and rotated during the rotation of the crown 10b relative to the chassis wheel 10a.
  • the inner surface of the crown 10b comprises at least on a part of its periphery a toothing for mesh with a toothing of the planet wheel 11.
  • the sun gear 12 is itself driven by the planet wheel 11 in contact with its peripheral edge.
  • the sun gear 12 can also include teeth to mesh with the planet gear 11.
  • the peripheral edge of the crown 10b, the planet gear 11 and the sun gear 12 are arranged in the same plane on the base of the crown 10b.
  • a first locking member which may be a first notch 13 or a first portion of truncated teeth
  • a rotation locking of the crown 10b relative to the chassis wheel. 10a This also has the effect of blocking the watch movement at zero power reserve.
  • a second locking member which may be a second notch 14 or a second portion of truncated teeth.
  • a rotation blocking of the crown 10b relative to the chassis wheel 10a occurs, which also has the effect of blocking the clockwork movement when the barrel system is fully wound.
  • the angle of rotation of the crown with respect to the chassis wheel between the two locking positions can be defined between 90 ° and 180 ° for example, but other angles can be defined.
  • the figures 2 and 3 show a top three-dimensional view and a vertical partial sectional view of the first barrel 2 of the barrel system, of the wheel assembly and of the differential 10 for the winding or charging function of the barrel system.
  • the central rod 4a of the driving wheel set 4 which is driven in rotation by the load output wheel of the first winding barrel 2 in contact with the first flange of the central rod 4a.
  • the second flange of the central rod 4a drives a first wheel 5a of the first reduction stage.
  • the second flange may comprise toothing to mesh with an external toothing of the first wheel 5a.
  • a central pinion of the first wheel 5a drives a second inverter wheel 6.
  • the central pinion of the first wheel has a diameter smaller than the outer teeth of the first wheel 5a to reduce the speed of rotation of the second wheel 6 relative to the speed of rotation of the first wheel 5a.
  • the central pinion can include teeth to mesh with an external toothing of the second wheel 6.
  • the second wheel 6 drives the third wheel 7a by acting only as an inverting wheel.
  • the third wheel 7a may include an external toothing to mesh with an external toothing of the second wheel 6.
  • a central pinion of the third wheel 7a is in contact with the chassis wheel 10a of the differential 10. This central pinion has a diameter smaller than the diameter.
  • external toothing of the third wheel 7a and may also include toothing for meshing with an external toothing of the frame wheel 10a.
  • the figures 4 and 5 show a top three-dimensional view and a vertical partial sectional view of the second barrel 3 of the barrel system, of the wheel assembly and of the differential 10 for the function of unwinding or unloading of the barrel system.
  • the ring 4b of the drive mobile 4 which is rotated by the discharge outlet wheel of the second unwinding barrel 3 in contact with the ring 4b.
  • the ring 4b drives a first wheel 5b of the second reduction stage.
  • the ring 4b can include teeth to mesh with an external toothing of the first wheel 5b.
  • a central pinion of the first wheel 5b drives a second wheel 8.
  • the central pinion of the first wheel has a diameter smaller than the outer teeth of the first wheel 5b to reduce the speed of rotation of the second wheel 8 relative to the speed of rotation of the first wheel 5b.
  • the central pinion may include teeth to mesh with an external toothing of the second wheel 8.
  • a central pinion of the second wheel 8 drives a third wheel 7b.
  • the central pinion of the second wheel 8 has a diameter smaller than the teeth outer of the second wheel 8.
  • the third wheel 7b may include an external toothing to mesh with a toothing of the central pinion of the second wheel 8.
  • a central pinion of the third wheel 7b is in contact with the outer edge of the crown 10b of the wheel.
  • differential 10. This central pinion has a smaller diameter than the external teeth of the third wheel 7b and may also include teeth to mesh with an external toothing of the outer edge of the crown 10b.
  • the figures 6a and 6b represent a three-dimensional view of the planetary differential 10.
  • the planetary differential 10 is shown in figure 6a in the maximum power reserve position, while in figure 6b , it is presented in the zero power reserve position.
  • the moving parts are presented with an arrow indicating the direction of rotation of each part before blocking.
  • the differential 10 is presented with a crown 10b, which comprises a peripheral edge and a base or bottom, a sun gear 12 mounted on the base of the crown in a coaxial manner and a chassis wheel 10a mounted in a coaxial manner on the rod 12 'of the Sun gear 12.
  • the satellite wheel 11 is mounted to rotate about an axis fixed to one of the three axial arms of the chassis wheel 10a. This satellite wheel 11 is rotated by the inner surface of the edge of the crown 10b.
  • the planet wheel 11 driven in rotation also causes the sun gear 12 to turn in contact with the planet gear 11.
  • the sun gear 12 is part of a power reserve indicator, which may also include a needle attached to the end. of the rod 12 'of the sun gear 12.
  • a sufficient space is provided between the crown 10b and the chassis wheel 10a while allowing the planet wheel 11 to be driven by the inner surface of the edge of the crown 10b.
  • the satellite wheel 11 is blocked by a first blocking member 13 from the edge of the crown 10b to the figure 6b showing the zero power reserve detection position.
  • the satellite wheel 11 is blocked by a second locking member 14 from the edge of the crown 10b to the figure 6a showing the maximum power reserve detection position.
  • each locking member 13, 14 can be of a different shape than that shown on the figures 6a and 6b , but allowing the satellite wheel 11 to be blocked in the two maximum and minimum power reserve detection positions. Blocking the satellite wheel 11 mounted on the chassis wheel makes it possible to block the clockwork movement as expected.
  • the blocking element of the chassis wheel can be a lug in place of the satellite wheel to come to block against a locking member of the crown.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Retarders (AREA)

Description

DOMAINE TECHNIQUETECHNICAL AREA

La présente invention concerne un mouvement d'horlogerie mécanique muni de moyens de détection de réserve de marche. Le mouvement d'horlogerie comprend au moins un système à barillet en liaison avec une roue de charge d'un différentiel et une roue de décharge du différentiel.The present invention relates to a mechanical timepiece movement provided with power reserve detection means. The clockwork movement comprises at least one barrel system in connection with a load wheel of a differential and a load wheel of the differential.

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 clockwork 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 discharge wheel of a differential. A set of wheels linked to 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 indicator device comprises at least one star wheel with an indicator member, which is rotated during the charging or discharging of the barrel. The indicator organ is used to display the power reserve of the watch. However, nothing is planned to ensure that the movement is blocked 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 power reserve indication mechanism. It comprises two barrels facing each other and connected by a common shaft, which controls the power reserve display mechanism. However, nothing is planned to ensure that the movement is blocked when the power reserve approaches zero.

On peut citer encore le brevet EP 1 970 778 B1 , qui décrit une pièce d'horlogerie avec un mouvement et un dispositif indicateur de réserve de marche. Cette pièce d'horlogerie comprend un système à barillet monté entre une platine de montre et un pont. Le dispositif indicateur de réserve de marche comprend un différentiel relié par une première entrée à l'arbre du barillet et par une seconde entrée au barillet. Le différentiel est agencé coaxialement à l'arbre du barillet. La sortie du barillet est reliée à un organe indicateur de réserve de marche. Rien n'est prévu pour assurer un blocage du mouvement, quand la réserve de marche s'approche de zéro.We can also cite the patent EP 1 970 778 B1 , which describes a timepiece with a movement and a power reserve indicator device. This timepiece comprises a barrel system mounted between a watch plate and a bridge. The power reserve indicator device comprises a differential connected by a first input to the barrel shaft and by a second input to the barrel. The differential is arranged coaxially with the barrel shaft. The output of the barrel is connected to a power reserve indicator device. Nothing is planned to ensure that the movement is blocked when the power reserve approaches zero.

La demande de brevet EP 1 139 182 A1 décrit un mécanisme indicateur de réserve de marche et une montre. Le mécanisme comprend un système à barillet lié à une roue de charge et à une roue de décharge d'un différentiel, et un indicateur de réserve de marche lié au différentiel. Un organe de blocage sous forme d'une ouverture en forme de banane est prévu sur une roue supérieure de l'indicateur et un élément de blocage lié à une roue inférieure parallèle du mobile indicateur est inséré dans l'ouverture faite sur la roue supérieure de l'indicateur. L'élément de blocage vient en contact d'une extrémité de l'ouverture de manière à bloquer le mouvement à la réserve de marche à zéro. Un tel agencement comprend trop de pièces pour l'indication de réserve de marche, ce qui constitue un inconvénient.The patent application EP 1 139 182 A1 describes a power reserve indicator mechanism and a watch. The mechanism comprises a barrel system linked to a load wheel and to a discharge wheel of a differential, and a power reserve indicator linked to the differential. A locking member in the form of a banana-shaped opening is provided on an upper wheel of the indicator and a locking element linked to a parallel lower wheel of the indicator mobile is inserted into the opening made on the upper wheel of the indicator. the indicator. The blocking element comes into contact with one end of the opening so as to block the movement at the zero power reserve. Such an arrangement includes too many parts for the power reserve indication, which is a drawback.

La demande de brevet EP 2 977 828 A1 décrit un indicateur de réserve de marche pour afficher la réserve de marche de plusieurs accumulateurs d'énergie, qui comprennent chacun un indicateur coopérant avec une entrée d'un mécanisme différentiel que comporte ledit indicateur. Une sortie du mécanisme différentiel coopère avec un mécanisme d'affichage de réserve de marche totale des d'accumulateurs d'énergie. Rien n'est prévu pour assurer un blocage du mouvement, quand la réserve de marche s'approche de zéro.The patent application EP 2 977 828 A1 describes a power reserve indicator for displaying the power reserve of several energy accumulators, each of which comprises an indicator cooperating with an input of a differential mechanism which said indicator comprises. An output of the differential mechanism cooperates with a display mechanism of the total power reserve of the energy accumulators. Nothing is planned to ensure that the movement is blocked when the power reserve approaches 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 aim of the invention is therefore to overcome the drawbacks of the state of the art by proposing a mechanical timepiece 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 characteristics of independent claim 1.

Des formes particulières d'exécution du mouvement d'horlogerie mécanique sont définies dans les revendications dépendantes 2 à 12.Particular embodiments of the mechanical clockwork movement are defined in dependent claims 2 to 12.

Un avantage du mouvement d'horlogerie mécanique réside dans le fait qu'il comprend un différentiel en liaison avec le système à barillet par l'intermédiaire d'un mobile d'entraînement et d'un ensemble de roues d'un ou deux étages réducteur. Le différentiel comprend une couronne sur laquelle sont montés de manière coaxiale un pignon solaire d'un indicateur de réserve de marche, et une roue châssis montée sur une tige axiale du pignon solaire. Un élément de blocage est monté sur la roue châssis pour venir en contact d'un organe de blocage de la couronne dans une position de détection de réserve de marche à zéro à indiquer.An advantage of the mechanical clockwork movement lies in the fact that it comprises a differential in connection with the barrel system via a driving wheel set and a set of wheels with one or two reduction stages. . The differential comprises a crown on which are mounted in a coaxial manner a sun gear of a power reserve indicator, and a chassis wheel mounted on an axial rod of the sun gear. A locking element is mounted on the chassis wheel to come into contact with a locking member of the crown in a position for detecting the power reserve at zero to be indicated.

Avantageusement, l'élément de blocage est une roue satellite entraînée en rotation par une surface intérieure du bord de la couronne. Un organe de blocage sous la forme d'un cran ou d'une portion de denture tronquée est prévu pour bloquer la roue satellite dans une position de réserve de marche minimum, ce qui bloque également le mouvement d'horlogerie. Un autre organe de blocage peut encore être prévu pour bloquer la roue satellite dans une position de réserve de marche maximum.Advantageously, the locking element is a satellite wheel driven in rotation by an inner surface of the edge of the crown. A locking member in the form of a notch or of a truncated toothing portion is provided to lock the satellite wheel in a minimum power reserve position, which also blocks the clockwork movement. Another blocking member can also be provided to block the satellite wheel in a position of maximum power reserve.

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 :

  • la figure 1 représente 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 tridimensionnelle de dessus d'un barillet et du rouage pour la fonction d'armage ou de charge du barillet selon l'invention,
  • la figure 3 représente une vue de côté en coupe partielle du système à barillet et des moyens de détection de réserve de marche disposés selon une ligne pour mieux représenter l'ensemble de roues pour la fonction d'armage ou de charge du barillet selon l'invention,
  • la figure 4 représente une vue tridimensionnelle de dessus d'un barillet et du rouage pour la fonction de désarmage ou de décharge du barillet selon l'invention,
  • la figure 5 représente une vue de côté en coupe partielle du système à barillet et des moyens de détection de réserve de marche disposés selon une ligne pour mieux représenter l'ensemble de roues pour la fonction de désarmage ou de décharge du barillet selon l'invention,
  • les figures 6a et 6b représentent une vue tridimensionnelle du différentiel planétaire avec ces éléments de blocage en position de réserve de marche maximum et en position de réserve marche minimum du mouvement d'horlogerie mécanique selon l'invention.
The aims, advantages and characteristics of a mechanical timepiece movement provided with power reserve detection means will appear better in the following description in a non-limiting manner with regard to the drawings in which:
  • the figure 1 represents 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 represents a three-dimensional view from above of a barrel and of the gear train for the function of winding or charging the barrel according to the invention,
  • the figure 3 shows a side view in partial section of the barrel system and the power reserve detection means arranged in a line to better represent the set of wheels for the function of winding or charging the barrel according to the invention,
  • the figure 4 represents a three-dimensional view from above of a barrel and of the gear train for the function of unwinding or discharging the barrel according to the invention,
  • the figure 5 shows a side view in partial section of the barrel system and the power reserve detection means arranged in a line to better represent the set of wheels for the function of unwinding or discharging the barrel according to the invention,
  • the figures 6a and 6b represent a three-dimensional view of the planetary differential with these locking elements in the maximum power reserve position and in the minimum power reserve position of the mechanical timepiece movement 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 timepiece movement provided with power reserve detection means, which are well known to a person skilled in the art in this technical field, are only described in a simplified manner.

La figure 1 représente une vue tridimensionnelle de dessus de certains composants du mouvement d'horlogerie mécanique 1. Le mouvement d'horlogerie mécanique 1 comprend au moins un système à barillet, qui peut être à simple barillet ou à deux barillets 2, 3 comme représenté et bien connus, et disposant d'une sortie de charge et d'une sortie de décharge pour entraîner notamment un rouage de base de temps non représenté.The figure 1 represents a three-dimensional view from above of certain components of the mechanical clockwork movement 1. The mechanical clockwork movement 1 comprises at least one barrel system, which can be with a single barrel or with two barrels 2, 3 as shown and well known , and having a charge output and a discharge output for driving in particular a time base gear, not shown.

Le mouvement d'horlogerie mécanique 1 comprend un différentiel 10 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 10 est relié de préférence par l'intermédiaire d'un étage réducteur ou chaîne de réduction de vitesse de rotation à la sortie de charge depuis le premier barillet 2 et à la sortie de décharge depuis le second barillet 3. Un mobile d'entraînement 4 entre le système à barillet 2, 3 et le différentiel 10 peut être prévu. Ce mobile d'entraînement 4 peut comprendre une tige centrale 4a et une bague 4b disposée autour de la tige de manière coaxiale. La bague 4b est maintenue sur une partie intermédiaire de la tige centrale 4a entre deux rebords de la tige centrale 4a tout en permettant la rotation de la bague autour de la tige centrale. Le diamètre des rebords ou des deux extrémités de la tige 4a peut être identique au diamètre extérieur de la bague 4b.The mechanical clockwork movement 1 comprises a differential 10 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 10 is preferably connected by means of a reduction stage or speed reduction chain to the charge output from the first barrel 2 and to the discharge output from the second barrel 3. A mobile of drive 4 between the barrel system 2, 3 and the differential 10 can be provided. This drive wheel set 4 can comprise a central rod 4a and a ring 4b arranged around the rod in a coaxial manner. The ring 4b is held on an intermediate part of the central rod 4a between two flanges of the central rod 4a while allowing the ring to rotate around the central rod. The diameter of the flanges or of the two ends of the rod 4a can be identical to the outside diameter of the ring 4b.

La roue de sortie de charge du premier barillet 2 est en contact d'un premier rebord ou première extrémité de la tige centrale 4a pour l'entraîner en rotation. La roue de sortie de charge du premier barillet 2 peut comprendre une denture pour engrener avec une denture du premier rebord ou première extrémité de la tige centrale 4a. La roue de sortie de décharge du second barillet 3 est un contact de la bague 4b pour l'entraîner en rotation. La roue de sortie de décharge du second barillet 3 peut comprendre une denture pour engrener avec une denture de la bague 4b.The load output wheel of the first barrel 2 is in contact with a first flange or first end of the central rod 4a to drive it in rotation. The load output wheel of the first barrel 2 may include toothing to mesh with a toothing of the first flange or first end of the central rod 4a. The discharge output wheel of the second barrel 3 is a contact of the ring 4b to drive it in rotation. The discharge output wheel of the second barrel 3 may include toothing to mesh with a toothing of the ring 4b.

Comme il sera expliqué plus en détails sur les figures 2 à 5 suivantes, le mobile d'entraînement 4 entraîne en rotation un ensemble de roues 5, 6, 7, 8 d'un étage réducteur entre le système à barillet 2, 3 et le différentiel 10. Depuis la sortie de charge du premier barillet 2, la tige 4a du mobile d'entraînement entraîne par son second rebord, l'ensemble de roues 5a, 6, 7a d'un premier étage réducteur, dont la troisième roue 7a est en contact d'une première roue de charge 10a du différentiel 10, qui est une roue châssis sous la forme d'un volant. Depuis la sortie de décharge du second barillet 3, la bague 4b du mobile d'entraînement 4 entraîne l'ensemble de roues 5b, 8 et 7b d'un second étage réducteur, dont la troisième roue 7b est en contact d'une couronne 10b du différentiel 10. La couronne 10b est de préférence disposée de manière coaxiale à la roue châssis 10a.As will be explained in more detail on the figures 2 to 5 following, the drive mobile 4 rotates a set of wheels 5, 6, 7, 8 of a reduction stage between the barrel system 2, 3 and the differential 10. From the load outlet of the first barrel 2, the rod 4a of the driving mobile unit drives by its second flange, the set of wheels 5a, 6, 7a of a first reduction stage, the third wheel 7a of which is in contact with a first load wheel 10a of the differential 10 , which is a chassis wheel in the form of a flywheel. From the discharge outlet of the second barrel 3, the ring 4b of the drive mobile 4 drives the set of wheels 5b, 8 and 7b of a second reduction stage, the third wheel 7b of which is in contact with a ring 10b of the differential 10. The ring gear 10b is preferably arranged coaxially with the chassis wheel 10a.

Le différentiel 10 comprend donc une couronne 10b, une roue châssis 10a coaxiale à la couronne et un pignon solaire 12 avec une tige axiale 12' en tant qu'indicateur de réserve de marche. La tige axiale 12' passe par une ouverture centrale de la roue châssis 10a et peut être reliée à une aiguille d'indication de réserve de marche non représentée. Le pignon solaire 12 est placé sur une base de la couronne 10b entre la roue châssis 10a et la couronne 10b et est coaxial à la roue châssis 10a et à la couronne 10b. De préférence, le diamètre extérieur de la couronne 10b est similaire au diamètre extérieur de la roue châssis 10a, alors que le diamètre du pignon solaire 12 est inférieur pour être placé à l'intérieur du bord périphérique de la couronne 10b.The differential 10 therefore comprises a crown 10b, a chassis wheel 10a coaxial with the crown and a sun pinion 12 with an axial rod 12 'as a power reserve indicator. The axial rod 12 'passes through a central opening of the chassis wheel 10a and can be connected to a power reserve indicating hand, not shown. The sun gear 12 is placed on a base of the crown 10b between the frame wheel 10a and the crown 10b and is coaxial with the frame wheel 10a and the crown 10b. Preferably, the outside diameter of the crown 10b is similar to the outside diameter of the chassis wheel 10a, while the diameter of the sun gear 12 is smaller to be placed inside the peripheral edge of the crown 10b.

Le différentiel 10 comprend encore au moins un organe de blocage du mouvement 13, 14 lié à la couronne 10b et de préférence au bord périphérique de la couronne pour coopérer avec au moins un élément de blocage 11 en liaison de la roue châssis 10a pour bloquer le mouvement d'horlogerie dans une position de réserve de marche à zéro du système à barillet, voire également dans une position de charge maximale du système à barillet.The differential 10 further comprises at least one movement blocking member 13, 14 linked to the crown 10b and preferably to the peripheral edge of the crown to cooperate with at least one locking element 11 in connection with the chassis wheel 10a to block the clockwork movement in a zero power reserve position of the barrel system, or even also in a maximum load position of the barrel system.

La roue châssis 10a du différentiel 10 comprend comme élément de blocage au moins une roue satellite 11 montée rotative sur une branche axiale de la roue châssis 10a. Cette roue satellite 11 est en contact d'une surface intérieure circulaire du bord périphérique de la couronne 10b et entraînée en rotation lors de la rotation de la couronne 10b par rapport à la roue châssis 10a. De préférence, la surface intérieure de la couronne 10b comprend au moins sur une partie de sa périphérie une denture pour engrener avec une denture de la roue satellite 11. Le pignon solaire 12 est quant à lui entraîné par la roue satellite 11 en contact de son bord périphérique. Le pignon solaire 12 peut aussi comprendre une denture pour engrener avec la roue satellite 11. Le bord périphérique de la couronne 10b, la roue satellite 11 et le pignon solaire 12 sont disposés dans un même plan sur la base de la couronne 10b.The chassis wheel 10a of the differential 10 comprises as a locking element at least one satellite wheel 11 rotatably mounted on an axial branch of the chassis wheel 10a. This satellite wheel 11 is in contact with a circular inner surface of the peripheral edge of the crown 10b and rotated during the rotation of the crown 10b relative to the chassis wheel 10a. Preferably, the inner surface of the crown 10b comprises at least on a part of its periphery a toothing for mesh with a toothing of the planet wheel 11. The sun gear 12 is itself driven by the planet wheel 11 in contact with its peripheral edge. The sun gear 12 can also include teeth to mesh with the planet gear 11. The peripheral edge of the crown 10b, the planet gear 11 and the sun gear 12 are arranged in the same plane on the base of the crown 10b.

Quand la roue satellite 11 arrive en contact d'au moins un premier organe de blocage, qui peut être un premier cran 13 ou une première portion de denture tronquée, il y a un blocage de rotation de la couronne 10b par rapport à la roue châssis 10a. Cela a pour effet également de bloquer le mouvement d'horlogerie à la réserve de marche à zéro. Lors de l'armage du système à barillet, la roue satellite 11 arrive en contact d'un second organe de blocage, qui peut être un second cran 14 ou une seconde portion de denture tronquée. Un blocage de rotation de la couronne 10b par rapport à la roue châssis 10a intervient, ce qui a pour effet aussi de bloquer le mouvement d'horlogerie à l'armage complet du système à barillet. L'angle de rotation de la couronne par rapport à la roue châssis entre les deux positions de blocage peut être défini entre 90° et 180° par exemple, mais d'autres angles peuvent être définis.When the satellite wheel 11 comes into contact with at least a first locking member, which may be a first notch 13 or a first portion of truncated teeth, there is a rotation locking of the crown 10b relative to the chassis wheel. 10a. This also has the effect of blocking the watch movement at zero power reserve. During the winding of the barrel system, the satellite wheel 11 comes into contact with a second locking member, which may be a second notch 14 or a second portion of truncated teeth. A rotation blocking of the crown 10b relative to the chassis wheel 10a occurs, which also has the effect of blocking the clockwork movement when the barrel system is fully wound. The angle of rotation of the crown with respect to the chassis wheel between the two locking positions can be defined between 90 ° and 180 ° for example, but other angles can be defined.

Les figures 2 et 3 représentent une vue tridimensionnelle de dessus et une vue en coupe partielle verticale du premier barillet 2 du système à barillet, de l'ensemble de roues et du différentiel 10 pour la fonction d'armage ou de charge du système à barillet.The figures 2 and 3 show a top three-dimensional view and a vertical partial sectional view of the first barrel 2 of the barrel system, of the wheel assembly and of the differential 10 for the winding or charging function of the barrel system.

Sur ces figures 2 et 3, on remarque bien la tige centrale 4a du mobile d'entraînement 4, qui est entraînée en rotation par la roue de sortie de charge du premier barillet d'armage 2 en contact du premier rebord de la tige centrale 4a. Le second rebord de la tige centrale 4a entraîne une première roue 5a du premier étage de réduction. Le second rebord peut comprendre une denture pour engrener avec une denture extérieure de la première roue 5a. Un pignon central de la première roue 5a entraîne une seconde roue inverseuse 6. Le pignon central de la première roue est de diamètre inférieur à la denture extérieure de la première roue 5a pour réduire la vitesse de rotation de la seconde roue 6 par rapport à la vitesse de rotation de la première roue 5a. Le pignon central peut comprendre une denture pour engrener avec une denture extérieure de la seconde roue 6. La seconde roue 6 entraîne la troisième roue 7a en agissant uniquement comme une roue inverseuse. La troisième roue 7a peut comprendre une denture extérieure pour engrener avec une denture extérieure de la seconde roue 6. Un pignon central de la troisième roue 7a est en contact de la roue châssis 10a du différentiel 10. Ce pignon central est de diamètre inférieur à la denture extérieure de la troisième roue 7a et peut comprendre aussi une denture pour engrener avec une denture extérieure de la roue châssis 10a.On these figures 2 and 3 , we can clearly see the central rod 4a of the driving wheel set 4, which is driven in rotation by the load output wheel of the first winding barrel 2 in contact with the first flange of the central rod 4a. The second flange of the central rod 4a drives a first wheel 5a of the first reduction stage. The second flange may comprise toothing to mesh with an external toothing of the first wheel 5a. A central pinion of the first wheel 5a drives a second inverter wheel 6. The central pinion of the first wheel has a diameter smaller than the outer teeth of the first wheel 5a to reduce the speed of rotation of the second wheel 6 relative to the speed of rotation of the first wheel 5a. The central pinion can include teeth to mesh with an external toothing of the second wheel 6. The second wheel 6 drives the third wheel 7a by acting only as an inverting wheel. The third wheel 7a may include an external toothing to mesh with an external toothing of the second wheel 6. A central pinion of the third wheel 7a is in contact with the chassis wheel 10a of the differential 10. This central pinion has a diameter smaller than the diameter. external toothing of the third wheel 7a and may also include toothing for meshing with an external toothing of the frame wheel 10a.

Les figures 4 et 5 représentent une vue tridimensionnelle de dessus et une vue en coupe partielle verticale du second barillet 3 du système à barillet, de l'ensemble de roues et du différentiel 10 pour la fonction de désarmage ou de décharge du système à barillet.The figures 4 and 5 show a top three-dimensional view and a vertical partial sectional view of the second barrel 3 of the barrel system, of the wheel assembly and of the differential 10 for the function of unwinding or unloading of the barrel system.

Sur ces figures 4 et 5, on remarque bien la bague 4b du mobile d'entraînement 4, qui est entraînée en rotation par la roue de sortie de décharge du second barillet de désarmage 3 en contact de la bague 4b. La bague 4b entraîne une première roue 5b du second étage de réduction. La bague 4b peut comprendre une denture pour engrener avec une denture extérieure de la première roue 5b. Un pignon central de la première roue 5b entraîne une seconde roue 8. Le pignon central de la première roue est de diamètre inférieur à la denture extérieure de la première roue 5b pour réduire la vitesse de rotation de la seconde roue 8 par rapport à la vitesse de rotation de la première roue 5b. Le pignon central peut comprendre une denture pour engrener avec une denture extérieure de la seconde roue 8. Un pignon central de La seconde roue 8 entraîne une troisième roue 7b. Le pignon central de la seconde roue 8 est de diamètre inférieur à la denture extérieure de la seconde roue 8. La troisième roue 7b peut comprendre une denture extérieure pour engrener avec une denture du pignon central de la seconde roue 8. Un pignon central de la troisième roue 7b est en contact de du bord extérieur de la couronne 10b du différentiel 10. Ce pignon central est de diamètre inférieur à la denture extérieure de la troisième roue 7b et peut comprendre aussi une denture pour engrener avec une denture extérieure du bord extérieur de la couronne 10b.On these figures 4 and 5 , note the ring 4b of the drive mobile 4, which is rotated by the discharge outlet wheel of the second unwinding barrel 3 in contact with the ring 4b. The ring 4b drives a first wheel 5b of the second reduction stage. The ring 4b can include teeth to mesh with an external toothing of the first wheel 5b. A central pinion of the first wheel 5b drives a second wheel 8. The central pinion of the first wheel has a diameter smaller than the outer teeth of the first wheel 5b to reduce the speed of rotation of the second wheel 8 relative to the speed of rotation of the first wheel 5b. The central pinion may include teeth to mesh with an external toothing of the second wheel 8. A central pinion of the second wheel 8 drives a third wheel 7b. The central pinion of the second wheel 8 has a diameter smaller than the teeth outer of the second wheel 8. The third wheel 7b may include an external toothing to mesh with a toothing of the central pinion of the second wheel 8. A central pinion of the third wheel 7b is in contact with the outer edge of the crown 10b of the wheel. differential 10. This central pinion has a smaller diameter than the external teeth of the third wheel 7b and may also include teeth to mesh with an external toothing of the outer edge of the crown 10b.

Les figures 6a et 6b représentent une vue tridimensionnelle du différentiel planétaire 10. Le différentiel planétaire 10 est présenté en figure 6a en position de réserve de marche maximum, alors qu'en figure 6b, il est présenté en position de réserve marche à zéro. Les pièces en mouvement sont présentées avec une flèche indicatrice de la direction de rotation de chaque pièce avant blocage.The figures 6a and 6b represent a three-dimensional view of the planetary differential 10. The planetary differential 10 is shown in figure 6a in the maximum power reserve position, while in figure 6b , it is presented in the zero power reserve position. The moving parts are presented with an arrow indicating the direction of rotation of each part before blocking.

Le différentiel 10 est présenté avec une couronne 10b, qui comprend un bord périphérique et une base ou fond, un pignon solaire 12 monté sur la base de la couronne de manière coaxiale et une roue châssis 10a monté de manière coaxiale sur la tige 12' du pignon solaire 12. La roue satellite 11 est montée rotative autour d'un axe fixé à un des trois bras axiaux de la roue châssis 10a. Cette roue satellite 11 est entraînée en rotation par la surface intérieure du bord de la couronne 10b. La roue satellite 11 entraînée en rotation fait tourner également le pignon solaire 12 en contact de la roue satellite 11. Ainsi le pignon solaire 12 est une pièce d'un indicateur de réserve de marche, qui peut comprendre encore une aiguille fixée à l'extrémité de la tige 12' du pignon solaire 12. Un espace suffisant est ménagé entre la couronne 10b et la roue châssis 10a tout en permettant à la roue satellite 11 d'être entraînée par la surface intérieure du bord de la couronne 10b.The differential 10 is presented with a crown 10b, which comprises a peripheral edge and a base or bottom, a sun gear 12 mounted on the base of the crown in a coaxial manner and a chassis wheel 10a mounted in a coaxial manner on the rod 12 'of the Sun gear 12. The satellite wheel 11 is mounted to rotate about an axis fixed to one of the three axial arms of the chassis wheel 10a. This satellite wheel 11 is rotated by the inner surface of the edge of the crown 10b. The planet wheel 11 driven in rotation also causes the sun gear 12 to turn in contact with the planet gear 11. Thus the sun gear 12 is part of a power reserve indicator, which may also include a needle attached to the end. of the rod 12 'of the sun gear 12. A sufficient space is provided between the crown 10b and the chassis wheel 10a while allowing the planet wheel 11 to be driven by the inner surface of the edge of the crown 10b.

La roue satellite 11 est bloquée par un premier organe de blocage 13 du bord de la couronne 10b à la figure 6b montrant la position de détection de réserve de marche à zéro. La roue satellite 11 est bloquée par un second organe de blocage 14 du bord de la couronne 10b à la figure 6a montrant la position de détection de réserve de marche maximum.The satellite wheel 11 is blocked by a first blocking member 13 from the edge of the crown 10b to the figure 6b showing the zero power reserve detection position. The satellite wheel 11 is blocked by a second locking member 14 from the edge of the crown 10b to the figure 6a showing the maximum power reserve detection position.

Bien entendu chaque organe de blocage 13, 14 peut être d'une autre forme que celle présentée sur les figures 6a et 6b, mais en permettant le blocage de la roue satellite 11 dans les deux positions de détection de réserve de marche maximum et minimum. Le blocage de la roue satellite 11 montée sur la roue châssis permet de bloquer le mouvement d'horlogerie comme espéré.Of course each locking member 13, 14 can be of a different shape than that shown on the figures 6a and 6b , but allowing the satellite wheel 11 to be blocked in the two maximum and minimum power reserve detection positions. Blocking the satellite wheel 11 mounted on the chassis wheel makes it possible to block the clockwork movement as expected.

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. L'élément de blocage de la roue châssis peut être un ergot en lieu et place de la roue satellite pour venir se bloquer contre un organe de blocage de la couronne.From the description which has just been given, several variant embodiments of the mechanical watch movement with power reserve detection means can be designed by those skilled in the art without departing from the scope of the invention defined by the claims. The blocking element of the chassis wheel can be a lug in place of the satellite wheel to come to block against a locking member of the crown.

Claims (12)

  1. Mechanical timepiece movement (1) with power reserve indication, comprising at least one barrel system (2, 3) with a winding output connected to a winding wheel, which is a chassis wheel (10a), and with an unwinding output connected to an unwinding wheel, which is a crown (10b) and a differential gear comprising the chassis wheel and the crown.
    the differential gear (10) being connected to a power reserve indicator (12) to display the power reserve, characterized
    in that it includes at least one locking member (13, 14) disposed on the crown (10b) and at least one locking element (11) disposed on the chassis wheel (10a), during the rotation of the crown relative to the chassis wheel, the locking member being intended to come into contact with the locking element, when the power reserve is at zero in order to stop the timepiece movement.
  2. Mechanical timepiece movement (1) according to claim 1, characterized in that the chassis wheel (10a) is mounted coaxially to the crown (10b).
  3. Mechanical timepiece movement (1) according to any of the preceding claims, characterized in that the crown (10b) includes a peripheral edge and a base, the locking member (13, 14) being disposed on an inner side of the peripheral edge.
  4. Mechanical timepiece movement (1) according to claim 3, characterized in that the chassis wheel (10a) includes a planet-wheel (11) as the locking element, which is mounted for free rotation on the chassis wheel (10a), the planet-wheel (11) being in contact with a circular inner surface of the peripheral edge of the crown (10b) to be driven in rotation during the rotation of the crown or of the chassis wheel.
  5. Mechanical timepiece movement (1) according to claim 4, characterized in that the planet-wheel (11) is arranged for free rotation on one of axial arms of the chassis wheel (10a).
  6. Mechanical timepiece movement (1) according to claim 4, characterized in that the power reserve indicator is a solar pinion (12) with an axial arbor (12'), the solar pinion being disposed between the crown (10b) and the chassis wheel (10a) and the axial arbor (12') passing through a central opening in the chassis wheel (10a).
  7. Mechanical timepiece movement (1) according to claim 6, characterized in that the solar pinion (12) is in contact with the planet-wheel (11) in order to be driven in rotation during the rotation of the planet-wheel (11).
  8. Mechanical timepiece movement (1) according to any of claims 4 to 7, characterized in that the peripheral edge of the crown includes on the inner surface of the crown (10b), a first locking member (13) and a second locking member (14) angularly offset from the first locking member, in that the planet-wheel (11) is driven in rotation during the rotation of the crown or of the chassis wheel as far as the first locking member (13) in the unwinding phase of the barrel system to stop the timepiece movement upon contact with the first locking member (13) when the power reserve is at zero, and in that the planet-wheel (11) is driven in rotation during the rotation of the crown or of the chassis wheel as far as the second locking member (14) in the winding phase of the barrel system to stop the timepiece movement upon contact with the second locking member (14).
  9. Mechanical timepiece movement (1) according to any of claims 3 and 8, characterized in that each locking member is a notch (13, 14) or a truncated toothing portion for locking in cooperation with the locking element of the chassis wheel.
  10. Mechanical timepiece movement (1) according to claim 1, characterized in that a first reduction stage (5a, 6, 7a) is disposed between the winding output of the barrel system (2, 3) and the chassis wheel (10a).
  11. Mechanical timepiece movement (1) according to claim 10, characterized in that a second reduction stage (5b, 8, 7b) is disposed between the unwinding output of the barrel system (2, 3) and the crown (10b).
  12. Mechanical timepiece movement (1) according to claim 11, characterized in that the movement includes a driving wheel set (4), which is composed of a central arbor (4a) and of a ring (4b) mounted for free rotation between two rims of the central arbor (4a), in that the central arbor (4a) is connected to the winding output of the barrel system (2, 3) and to the first reduction stage, whereas the ring (4b) is connected to the unwinding output of the barrel system (2, 3) and to the second reduction stage.
EP16203366.6A 2016-12-12 2016-12-12 Mechanical clock movement with power reserve detection Active EP3333637B1 (en)

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EP16203366.6A EP3333637B1 (en) 2016-12-12 2016-12-12 Mechanical clock movement with power reserve detection
US15/791,637 US10444705B2 (en) 2016-12-12 2017-10-24 Mechanical timepiece movement with power reserve detection
JP2017206820A JP6442586B2 (en) 2016-12-12 2017-10-26 Mechanical timer movement detecting power reserve
CN201711306170.2A CN108227452B (en) 2016-12-12 2017-12-11 Mechanical timepiece movement with power reserve detection
HK18115291.4A HK1256246A1 (en) 2016-12-12 2018-11-29 Mechanical timepiece movement with power reserve detection

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EP2977828B1 (en) * 2014-07-21 2017-08-30 ETA SA Manufacture Horlogère Suisse Timepiece power reserve indicator
EP3070535B1 (en) * 2015-03-18 2020-04-29 Glashütter Uhrenbetrieb GmbH Barrel with largely constant torque
CN204719413U (en) * 2015-06-16 2015-10-21 深圳市天洲计时科技有限公司 A kind of mechanical watch energy display mechanism
EP3220206B1 (en) * 2016-03-16 2020-09-30 Rolex Sa Clock transmission device
EP3306415B1 (en) * 2016-10-04 2020-05-20 ETA SA Manufacture Horlogère Suisse Mechanical clock movement with power-reserve detection
EP3306416B1 (en) * 2016-10-04 2019-08-21 ETA SA Manufacture Horlogère Suisse Mechanical clock movement with power-reserve detection

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US20180164743A1 (en) 2018-06-14
EP3333637A1 (en) 2018-06-13
JP2018096976A (en) 2018-06-21
HK1256246A1 (en) 2019-09-20
CN108227452A (en) 2018-06-29
CN108227452B (en) 2019-12-17
JP6442586B2 (en) 2018-12-19
US10444705B2 (en) 2019-10-15

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