EP2574995B1 - Electromechanical timepiece with an additional function - Google Patents

Electromechanical timepiece with an additional function Download PDF

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Publication number
EP2574995B1
EP2574995B1 EP11183105.3A EP11183105A EP2574995B1 EP 2574995 B1 EP2574995 B1 EP 2574995B1 EP 11183105 A EP11183105 A EP 11183105A EP 2574995 B1 EP2574995 B1 EP 2574995B1
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EP
European Patent Office
Prior art keywords
timepiece
additional
hand
watch
display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11183105.3A
Other languages
German (de)
French (fr)
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EP2574995A1 (en
Inventor
Emmanuel Fleury
André Zanetta
Martin Bisig
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 EP11183105.3A priority Critical patent/EP2574995B1/en
Priority to US13/617,658 priority patent/US9019801B2/en
Priority to CN201210367721.7A priority patent/CN103034110B/en
Priority to JP2012215766A priority patent/JP5658722B2/en
Publication of EP2574995A1 publication Critical patent/EP2574995A1/en
Priority to HK13111453.2A priority patent/HK1184239A1/en
Application granted granted Critical
Publication of EP2574995B1 publication Critical patent/EP2574995B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/04—Mounting the clockwork in the case; Shock absorbing mountings
    • G04B37/0427—Mountings relative to pocket and wrist watches allowing a rocking movement about a hinge or any other movement
    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • 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
    • G04B47/00—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece
    • G04B47/06—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece with attached measuring instruments, e.g. pedometer, barometer, thermometer or compass
    • G04B47/066—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece with attached measuring instruments, e.g. pedometer, barometer, thermometer or compass with a pressure sensor
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G04C10/04—Arrangements of electric power supplies in time pieces with means for indicating the condition of the power supply

Definitions

  • the present invention relates to an electromechanical timepiece with an additional function. More specifically, the present invention relates to an electromechanical wristwatch capable of providing an additional indication in addition to displaying the current time.
  • An example of such a watch is a solar watch comprising a rechargeable accumulator powered by a photovoltaic cell and capable of providing its user with an indication of the state of charge of the accumulator.
  • Another example of such a watch is a compass watch capable of indicating its user the direction of magnetic north in addition to indicating the current time.
  • a major trend in the watchmaking field is to supply watches capable of displaying an ever-increasing number of indications.
  • the current timepieces frequently provide an indication of the date, the month of the year, the current year or are equipped with a chronograph mechanism and include for this purpose auxiliary dials for displaying the measured time.
  • Current timepieces can also include electronic functions such as a compass or be powered by an accumulator which can be recharged by means of a solar cell and for which an indication of the state of charge must be supplied to the user.
  • the first of these strategies consists in equipping the watch for example with tactile keys which allow the user, from a basic operating mode of the watch in which typically displays the current time, to access submenus allowing the activation of the auxiliary function (s).
  • the technology of tactile keys is however relatively expensive, which reserves it rather for high-end watches.
  • the second strategy consists in displaying all of the watch's functions by means of auxiliary dials arranged on the watch face. In this case, however, one is necessarily limited by the space available on the surface of the dial and by the concern that the information provided by the watch remain legible for its user.
  • the document EP 1,840,678 describes a double-sided watch movement comprising an upper switch and dial and a lower switch and dial.
  • the upper and lower switches are driven simultaneously by the same clockwork movement, so that the lower switch can only display a time quantity which is in a proportional relationship with the time quantity displayed by the upper switch.
  • the document EP 1,840,678 does not plan to display information with the lower turnout that is not related to time or time information that is not related to the timing information displayed by the upper turnout.
  • the document WO 2009/126794 describes a watch comprising several displays, these displays being able to be driven either by the same movement, or by separate movements. In the case of a single movement, the different displays can only display information which is all proportional to time. In this case, it is therefore not possible to display a quantity not related to time.
  • the document GB 2 241 868 indicates a watch that combines the display of the current time with a display of a quantity unrelated to time such as a compass or a thermometer in the back of the watch.
  • the document JP 2010 217138 discloses a timepiece indicating the usual time as well as additional information unrelated to the time corresponding to the state of charge of a battery.
  • the hand is mounted in the back of the timepiece and has a structure such that it is not necessary to turn the clock to read the additional information.
  • the object of the present invention is to remedy the aforementioned problems as well as others still by providing an electromechanical timepiece which, in addition to indicating the current time, is capable of providing at least one additional indication relating to a function additional, this additional indication being able to be a temporal quantity or an element of information not related to time.
  • the present invention relates to an electromechanical timepiece according to claim 1 appended.
  • the present invention provides a timepiece arranged to provide, in addition to the indication of the current time on the side of the dial, an additional indication which is displayed not on the side of the dial but on the bottom side of the timepiece. This saves space at the level of the dial which can be used either to display the hourly or other indications according to larger dimensions, or to display one or more additional indications. As for the user, he just has to turn his watch over to read the additional indication. It will be understood that in normal operating conditions, the indicator pointer for the additional function, fixedly mounted on an axis of the gear train, is driven at the same time and at the same speed as this axis.
  • the timepiece is equipped either with means which make it possible to automatically detect when the timepiece is turned over, or with a control member operable by the user to indicate to the timepiece that it is returned.
  • the timepiece when the timepiece is returned, it enters a mode of operation in which that of the display wheels of the current time on the axis of which is mounted the indicator hand of the additional function is not no longer driven by its motor to indicate the current time, but is driven by this same motor to allow the indicator hand mounted on the back side of the watch to provide the indication relating to the additional function.
  • the timepiece no longer provides an exact indication of the current time. This is not however detrimental because when the user consults the indication relating to the additional function, he keeps his watch turned over, so that he cannot read the indication relating to the current time provided by the hands. 'hours and minutes that move above the watch face.
  • it can be considered, at regular time intervals, for example every minute, to drive the display wheels of the current time at high speed, typically at a speed of five revolutions per second, to correct the indication of the current time.
  • the pointer indicating the additional function is mounted on an axis integral with the seconds pinion.
  • the second hand and the indicator hand for the additional function therefore rotate at the same time and by the same angle in the display of the current time.
  • the second hand is no longer driven by its motor to display the current time, but to allow the indicator hand mounted on the side of the back of the watch to provide an indication relating to the additional function.
  • the timepiece according to the invention is a solar wristwatch comprising a photovoltaic cell mounted in the back of the watch and the additional indicator needle of which is used to indicate to the wearer of the watch that state of charge of the accumulator supplied by the photovoltaic cell.
  • the solar cell is in the dark.
  • the photovoltaic cell begins to convert the incident light into electricity.
  • the watch detects the influx of light falling on the photovoltaic cell and deduces that it has returned.
  • the watch enters the display mode of the additional function in which the indicator hand of the additional function indicates to the user the state of charge of the battery.
  • the timepiece is a compass watch and the additional hand is used to indicate the direction of magnetic north.
  • the user wants to use the compass, he presses a push button to indicate to the watch that it must enter the display mode of the function additional.
  • the second hand is no longer driven by its motor to display the current time, but to allow the additional hand to indicate the direction of magnetic north. It is also conceivable to equip the timepiece with means enabling it to detect that it has returned and to enter the display mode of the additional information relating to the direction of terrestrial magnetic north.
  • the timepiece is a watch capable of providing meteorological indications.
  • the additional needle is used to give indications on the evolution of the climatic conditions.
  • the additional indicator hand is used to provide the indication of the date of the current day.
  • the present invention proceeds from the general inventive idea which consists in transferring on the back of a timepiece an indication of a quantity linked to time or of an item of information not linked to time.
  • the seconds wheel in other words the seconds hand, and the additional indicator hand therefore rotate at the same time by the same angle in current time display mode.
  • display mode of the additional indication the second hand is no longer driven by its motor to indicate the current time, but to allow the additional hand to provide an indication relating to the additional function.
  • the present invention thus has two essential advantages: on the one hand, it allows the indication of a quantity linked to an additional function to be transferred to the bottom of the timepiece, which frees up space on the watch face. It is therefore possible to display indications on the dial according to larger dimensions or to display one or more additional indications.
  • the present invention does not require substantial modifications to the existing calibers. Indeed, it suffices to extend the axis of the seconds wheel in order to be able to mount the additional hand at the free end thereof and to modify the watch control software somewhat so that the motor which drives normally the second hand for displaying the current time also drives the latter to allow the indicator hand located on the back side of the watch to display information relating to the additional function.
  • the figure 1 is a schematic sectional view of an electromechanical watch case according to the invention.
  • this watch case is delimited upwards by a dial 2 which defines the front face of the watch and above which a switch 4 moves including an hour hand 6 , a minute hand 8 and a second hand 10.
  • This switch 4 is driven by a train 12 conventionally comprising a timer mobile formed of a second mobile 14 whose second pinion 16 receives the driving impulses of a motor (not shown in the drawing).
  • a second pinion axis 18 carries the second hand 10.
  • the assembly is completed by a minute mobile 20 whose minute wheel 22 drives a carriageway 24 on which is fixed the minute hand 8.
  • the pinion 26 minutes it drives an hour wheel 28 on which the hour hand is driven.
  • the various mobiles forming the timer mobile instead of being driven by a single motor, could each be driven by an independent motor.
  • the operation of the watch is ensured by an electronic movement 30 housed in the interior volume of the watch case 1.
  • the electric power supply of the watch is ensured by a photovoltaic cell 32 disposed on the side of a transparent bottom 34 which demarcates the watch case 1 downwards by defining the rear face thereof.
  • This photovoltaic cell 32 supplies current to a rechargeable battery 36.
  • the length of the second pinion axis 18 is increased by a value typically between 0.5 and 3 mm to take account of the sum of the thicknesses of a printed circuit board (not visible on the drawing) on which is mounted the electronic movement 30 and the photovoltaic cell 32 and thus allow the second pinion axis 18 to open onto the rear face of the watch case 1.
  • an additional indicator needle 38 which will move under the transparent bottom 34 is mounted on the free end of the seconds pinion axis 18. It is understood that, by construction, the additional indicator needle 38 is mounted in parallel with the second hand 10, so that these two hands 38 and 10 are always driven at the same time and at the same angle.
  • the watch according to the invention is a photovoltaic watch.
  • the photovoltaic cell 32 is mounted on the side of the transparent bottom 34 of the watch case 1, l
  • the photovoltaic effect can only occur when the watch case 1 is turned over. Either the user removes his watch from the wrist and places it upside down on a support, or the watch is of the reversible type, that is to say that the watch case 1 is pivotally mounted 180 ° in a frame, and in this case the user can return the watch case 1 to expose the photovoltaic cell 32 to ambient light without having to leave his watch from the wrist.
  • the first consists in providing the watch according to the invention with a push button or other additional control means by simple pressure on which the user can indicate to the watch that it has been returned and that it must enter its display mode of an additional indication.
  • the second solution is specific to solar watches.
  • the control circuit of the watch detects the increase in the current produced by the photovoltaic cell 32 and deduces therefrom that the watch is returned. Consequently, the control circuit forces the watch to enter the display mode of the additional function in which the indicator hand 38 of the additional function indicates to the user the state of charge of the battery 36.
  • the watch according to the invention when the watch according to the invention enters its display mode of the additional function, it can no longer indicate the current time.
  • the additional indicator needle 38 is integral with the second pinion axis 18 on which the second hand 10 is driven, so that these two needles 38 and 10 are always driven at the same time and from the same angle. Consequently, when the additional indicator hand 38 moves under the transparent bottom 34 to provide the user with information relating to the additional function, the second hand 10 moves in concert and the display of the current time is distorted. This is not, however, problematic since, when the user turns over his watch to consult the information provided by the additional indicator hand 38, he cannot at the same time see the display of the current time on the face. front of the watch.
  • the hour 6, minute 8 and second 10 hands can be driven by a single motor. In this case, all the hands for displaying the current time rotate when the watch enters its display mode for the additional function. It is also possible that each of the display hands for the current time is driven by its own motor. In this case, only the seconds display hand 10 is driven by the additional indicator hand 38 when the latter moves.
  • the additional indicator hand 38 is mounted on the second pinion axis 18 which carries the second hand 10 at its opposite end. It goes without saying that it is also possible to mount the additional indicator needle 38 on any axis of the gear train 12 of the watch provided that the length of this axis is increased to make it open onto the rear face of the watch.
  • the figure 2 is a bottom view of the electromechanical watch according to the invention on which the transparent bottom 34 of this watch is visible. Symbols are reported by any appropriate means on the inner face of the transparent background 34.
  • a first series of icons 40a-40d representing the sun makes it possible to display the intensity of the charge as a function of the degree of sunshine.
  • a second series of icons 42a-42c representing the battery in several states of charge makes it possible to indicate the state of charge of the battery 36.
  • the additional indicator hand 38 displays the intensity of the charge of the battery 36 by pointing to one of the symbols 40a-40d representing the sun.
  • the additional indicator needle 38 points to the symbol 42a indicating that the battery 36 is full and this regardless of the intensity of the sunshine.
  • the additional indicator hand 38 indicates the state of charge of the battery 36 by pointing to one of the icons 42a-42c representing the battery 36 in several states of charge .
  • the battery 36 does not charge or practically does not, because the intensity of the light is too weak. After a certain time in this mode, the watch returns to the display mode of the current time.
  • the user constantly knows whether the battery 36 is charged or not and he can control the correct positioning of the watch relative to the available lighting.
  • the user can at any time check the progress of the load by shading the watch in order to descend below the sunshine threshold. He can then put the watch back in the sun and be immediately informed of the available charging power.
  • the figure 3 is a view similar to that of the figure 2 in the case where the additional function consists of a compass.
  • the watch has means allowing it to detect that it has been returned, or the user activates a control means allowing it to indicate to the watch that it has been returned and that it must enter in its display mode of an additional indication.
  • the additional indicator hand 38 will indicate the direction of the terrestrial magnetic north.
  • the figure 4 is a view similar to that of the figure 2 in the case where the additional function is a barometric indicator.
  • the additional indicator hand 38 When the watch enters its mode of displaying an additional indication, the additional indicator hand 38 will position itself on either side of an index 44 to indicate either an increase in atmospheric pressure and therefore an improvement in weather conditions, a decrease in atmospheric pressure and therefore a deterioration of weather.
  • the figure 5 is a view similar to that of the figure 2 in the case where the additional function corresponds to a date indication.
  • the additional indicator hand 38 will point for a predetermined period of time on the date of the current day.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromechanical Clocks (AREA)

Description

La présente invention concerne une pièce d'horlogerie électromécanique dotée d'une fonction additionnelle. Plus précisément, la présente invention se rapporte à une montre-bracelet électromécanique capable de fournir une indication additionnelle en plus d'afficher l'heure courante. Un exemple d'une telle montre est une montre solaire comprenant un accumulateur rechargeable alimenté par une cellule photovoltaïque et capable de fournir à son utilisateur une indication de l'état de charge de l'accumulateur. Un autre exemple d'une telle montre est une montre-boussole capable d'indiquer à son utilisateur la direction du nord magnétique en plus d'indiquer l'heure courante.The present invention relates to an electromechanical timepiece with an additional function. More specifically, the present invention relates to an electromechanical wristwatch capable of providing an additional indication in addition to displaying the current time. An example of such a watch is a solar watch comprising a rechargeable accumulator powered by a photovoltaic cell and capable of providing its user with an indication of the state of charge of the accumulator. Another example of such a watch is a compass watch capable of indicating its user the direction of magnetic north in addition to indicating the current time.

Une tendance lourde dans le domaine de l'horlogerie est de fournir des montres capables d'afficher un nombre sans cesse croissant d'indications. Ainsi, outre l'indication de l'heure courante, les pièces d'horlogerie actuelles fournissent fréquemment une indication du quantième, du mois de l'année, de l'année en cours ou bien sont dotées d'un mécanisme de chronographe et comprennent à cet effet des cadrans auxiliaires pour l'affichage du temps mesuré. Les pièces d'horlogerie actuelles peuvent également comprendre des fonctions électroniques telles qu'une boussole ou bien être alimentées par un accumulateur pouvant être rechargé au moyen d'une cellule solaire et dont il faut fournir une indication de l'état de charge à l'utilisateur.A major trend in the watchmaking field is to supply watches capable of displaying an ever-increasing number of indications. Thus, in addition to the indication of the current time, the current timepieces frequently provide an indication of the date, the month of the year, the current year or are equipped with a chronograph mechanism and include for this purpose auxiliary dials for displaying the measured time. Current timepieces can also include electronic functions such as a compass or be powered by an accumulator which can be recharged by means of a solar cell and for which an indication of the state of charge must be supplied to the user.

Face à l'inflation du nombre de fonctions à afficher, deux stratégies différentes sont envisageables. La première de ces stratégies consiste à équiper la montre par exemple de touches tactiles qui permettent à l'utilisateur, depuis un mode de fonctionnement de base de la montre dans laquelle celle-ci affiche typiquement l'heure courante, d'accéder à des sous-menus permettant l'activation de la ou des fonctions auxiliaires. La technologie des touches tactiles est cependant relativement coûteuse, ce qui la réserve plutôt à des montres haut de gamme. La seconde stratégie consiste à afficher l'ensemble des fonctions de la montre au moyen de cadrans auxiliaires agencés sur le cadran de la montre. Dans ce cas cependant, on est nécessairement limité par la place disponible à la surface du cadran et par le souci que les informations fournies par la montre restent lisibles pour son utilisateur.Faced with the inflation in the number of functions to be displayed, two different strategies are possible. The first of these strategies consists in equipping the watch for example with tactile keys which allow the user, from a basic operating mode of the watch in which typically displays the current time, to access submenus allowing the activation of the auxiliary function (s). The technology of tactile keys is however relatively expensive, which reserves it rather for high-end watches. The second strategy consists in displaying all of the watch's functions by means of auxiliary dials arranged on the watch face. In this case, however, one is necessarily limited by the space available on the surface of the dial and by the concern that the information provided by the watch remain legible for its user.

Le document EP 1 840 678 décrit un mouvement d'horlogerie double face comportant un aiguillage et un cadran supérieurs et un aiguillage et un cadran inférieurs. Dans ce document EP 1 840 678 , les aiguillages supérieur et inférieur sont entraînés simultanément par le même mouvement d'horlogerie, de sorte que l'aiguillage inférieur ne peut afficher qu'une grandeur temporelle qui soit dans un lien de proportionnalité avec la grandeur temporelle affichée par l'aiguillage supérieur. Le document EP 1 840 678 ne prévoit pas d'afficher avec l'aiguillage inférieur une information non liée au temps ou bien une information temporelle qui ne soit pas liée à l'information temporelle affichée par l'aiguillage supérieur.The document EP 1,840,678 describes a double-sided watch movement comprising an upper switch and dial and a lower switch and dial. In this document EP 1,840,678 , the upper and lower switches are driven simultaneously by the same clockwork movement, so that the lower switch can only display a time quantity which is in a proportional relationship with the time quantity displayed by the upper switch. The document EP 1,840,678 does not plan to display information with the lower turnout that is not related to time or time information that is not related to the timing information displayed by the upper turnout.

Le document WO 2009/126794 décrit une montre comprenant plusieurs affichages, ces affichages pouvant être entraînés soit par un même mouvement, soit par des mouvements distincts. Dans le cas d'un mouvement unique, les différents affichages ne peuvent afficher que des informations qui sont toutes proportionnelles au temps. Dans ce cas, il n'est donc pas possible d'afficher une grandeur non liée au temps.The document WO 2009/126794 describes a watch comprising several displays, these displays being able to be driven either by the same movement, or by separate movements. In the case of a single movement, the different displays can only display information which is all proportional to time. In this case, it is therefore not possible to display a quantity not related to time.

Le document GB 2 241 868 indique une montre qui combine l'affichage de l'heure courante avec un affichage d'une grandeur non liée au temps comme une boussole ou un thermomètre dans le fond de la montre.The document GB 2 241 868 indicates a watch that combines the display of the current time with a display of a quantity unrelated to time such as a compass or a thermometer in the back of the watch.

Le document JP 2010 217138 divulgue une pièce d'horlogerie indiquant l'heure habituelle ainsi qu'une information additionnelle non liée au temps correspondant à l'état de charge d'une batterie. L'aiguille est montée dans le fond de la pièce d'horlogerie et a une structure telle qu'il n'est pas nécessaire de retourner l'horloge pour lire l'information additionnelle. La présente invention a pour but de remédier aux problèmes susmentionnés ainsi qu'à d'autres encore en procurant une pièce d'horlogerie électromécanique qui, outre l'indication de l'heure courante, est capable de fournir au moins une indication supplémentaire relative à une fonction additionnelle, cette indication supplémentaire pouvant être une grandeur temporelle ou un élément d'information non lié au temps.The document JP 2010 217138 discloses a timepiece indicating the usual time as well as additional information unrelated to the time corresponding to the state of charge of a battery. The hand is mounted in the back of the timepiece and has a structure such that it is not necessary to turn the clock to read the additional information. The object of the present invention is to remedy the aforementioned problems as well as others still by providing an electromechanical timepiece which, in addition to indicating the current time, is capable of providing at least one additional indication relating to a function additional, this additional indication being able to be a temporal quantity or an element of information not related to time.

A cet effet, la présente invention concerne une pièce d'horlogerie électromécanique selon la revendication 1 annexée.To this end, the present invention relates to an electromechanical timepiece according to claim 1 appended.

Grâce à ces caractéristiques, la présente invention procure une pièce d'horlogerie agencée pour fournir outre l'indication de l'heure courante du côté du cadran, une indication additionnelle qui est affichée non pas du côté du cadran mais du côté du fond de la pièce d'horlogerie. On réalise ainsi un gain de place au niveau du cadran qui peut être mis à profit soit pour afficher les indications horaires ou autres selon de plus grandes dimensions, soit pour afficher une ou plusieurs indications supplémentaires. Quant à l'utilisateur, il lui suffit de retourner sa montre pour pouvoir lire l'indication additionnelle. On comprendra qu'en régime de fonctionnement normal, l'aiguille indicatrice de la fonction additionnelle, montée fixe sur un axe du rouage, est entraînée en même temps et à la même vitesse que cette axe.Thanks to these characteristics, the present invention provides a timepiece arranged to provide, in addition to the indication of the current time on the side of the dial, an additional indication which is displayed not on the side of the dial but on the bottom side of the timepiece. This saves space at the level of the dial which can be used either to display the hourly or other indications according to larger dimensions, or to display one or more additional indications. As for the user, he just has to turn his watch over to read the additional indication. It will be understood that in normal operating conditions, the indicator pointer for the additional function, fixedly mounted on an axis of the gear train, is driven at the same time and at the same speed as this axis.

D'autre part, la pièce d'horlogerie est équipée soit de moyens qui permettent de détecter automatiquement lorsque la pièce d'horlogerie est retournée, soit d'un organe de commande actionnable par l'utilisateur pour indiquer à la pièce d'horlogerie que celle-ci est retournée.On the other hand, the timepiece is equipped either with means which make it possible to automatically detect when the timepiece is turned over, or with a control member operable by the user to indicate to the timepiece that it is returned.

Ainsi, lorsque la pièce d'horlogerie est retournée, elle entre dans un mode de fonctionnement dans lequel celle des roues d'affichage de l'heure courante sur l'axe de laquelle est montée l'aiguille indicatrice de la fonction additionnelle n'est plus entraînée par son moteur pour indiquer l'heure courante, mais est entraînée par ce même moteur pour permettre à l'aiguille indicatrice montée du côté du fond de la montre de fournir l'indication relative à la fonction additionnelle. Pendant ce laps de temps, la pièce d'horlogerie ne fournit plus une indication exacte de l'heure courante. Ceci n'est toutefois pas préjudiciable car lorsque l'utilisateur consulte l'indication relative à la fonction additionnelle, il tient sa montre retournée, de sorte qu'il ne peut lire l'indication relative à l'heure courante fournie par les aiguilles d'heures et de minutes qui se déplacent au-dessus du cadran de la montre. Toutefois, pour corriger ce problème, il peut être envisagé, à intervalles de temps réguliers, par exemple toutes les minutes, d'entraîner les roues d'affichage de l'heure courante à haute vitesse, typiquement à une vitesse de cinq tours par seconde, pour corriger l'indication de l'heure courante.Thus, when the timepiece is returned, it enters a mode of operation in which that of the display wheels of the current time on the axis of which is mounted the indicator hand of the additional function is not no longer driven by its motor to indicate the current time, but is driven by this same motor to allow the indicator hand mounted on the back side of the watch to provide the indication relating to the additional function. During this time, the timepiece no longer provides an exact indication of the current time. This is not however detrimental because when the user consults the indication relating to the additional function, he keeps his watch turned over, so that he cannot read the indication relating to the current time provided by the hands. 'hours and minutes that move above the watch face. However, to correct this problem, it can be considered, at regular time intervals, for example every minute, to drive the display wheels of the current time at high speed, typically at a speed of five revolutions per second, to correct the indication of the current time.

Selon un mode préféré de réalisation de l'invention, l'aiguille indicatrice de la fonction additionnelle est montée sur un axe solidaire du pignon des secondes. L'aiguille des secondes et l'aiguille indicatrice de la fonction additionnelle tournent donc en même temps et d'un même angle en mode d'affichage de l'heure courante. En mode d'affichage de la fonction additionnelle, l'aiguille des secondes n'est plus entraînée par son moteur pour afficher l'heure courante, mais pour permettre à l'aiguille indicatrice montée du coté du fond de la montre de fournir une indication relative à la fonction additionnelle.According to a preferred embodiment of the invention, the pointer indicating the additional function is mounted on an axis integral with the seconds pinion. The second hand and the indicator hand for the additional function therefore rotate at the same time and by the same angle in the display of the current time. In display mode of the additional function, the second hand is no longer driven by its motor to display the current time, but to allow the indicator hand mounted on the side of the back of the watch to provide an indication relating to the additional function.

Selon une première variante de réalisation, la pièce d'horlogerie selon l'invention est une montre-bracelet solaire comprenant une cellule photovoltaïque montée dans le fond de la montre et dont l'aiguille indicatrice additionnelle est utilisée pour indiquer au porteur de la montre l'état de charge de l'accumulateur alimenté par la cellule photovoltaïque. Lorsque l'utilisateur porte sa montre solaire au poignet, la cellule solaire est dans l'obscurité. Par contre, dès que l'utilisateur retourne sa montre, la cellule photovoltaïque commence à convertir la lumière incidente en électricité. Par suite, la montre détecte l'afflux de lumière qui tombe sur la cellule photovoltaïque et en déduit qu'elle est retournée. La montre entre alors dans le mode d'affichage de la fonction additionnelle dans lequel l'aiguille indicatrice de la fonction additionnelle indique à l'utilisateur l'état de charge de la batterie.According to a first variant embodiment, the timepiece according to the invention is a solar wristwatch comprising a photovoltaic cell mounted in the back of the watch and the additional indicator needle of which is used to indicate to the wearer of the watch that state of charge of the accumulator supplied by the photovoltaic cell. When the user wears his solar watch on his wrist, the solar cell is in the dark. On the other hand, as soon as the user returns his watch, the photovoltaic cell begins to convert the incident light into electricity. As a result, the watch detects the influx of light falling on the photovoltaic cell and deduces that it has returned. The watch then enters the display mode of the additional function in which the indicator hand of the additional function indicates to the user the state of charge of the battery.

Selon une deuxième variante de réalisation de l'invention, la pièce d'horlogerie est une montre-boussole et l'aiguille additionnelle est utilisée pour indiquer la direction du nord magnétique. Lorsque l'utilisateur veut utiliser la boussole, il exerce une pression sur un bouton-poussoir pour indiquer à la montre qu'elle doit entrer en mode d'affichage de la fonction additionnelle. L'aiguille des secondes n'est alors plus entraînée par son moteur pour afficher l'heure courante, mais pour permettre à l'aiguille additionnelle d'indiquer la direction du nord magnétique. Il est également envisageable d'équiper la pièce d'horlogerie de moyens lui permettant de détecter qu'elle est retournée et d'entrer dans le mode d'affichage de l'information additionnelle relative à la direction du nord magnétique terrestre.According to a second variant embodiment of the invention, the timepiece is a compass watch and the additional hand is used to indicate the direction of magnetic north. When the user wants to use the compass, he presses a push button to indicate to the watch that it must enter the display mode of the function additional. The second hand is no longer driven by its motor to display the current time, but to allow the additional hand to indicate the direction of magnetic north. It is also conceivable to equip the timepiece with means enabling it to detect that it has returned and to enter the display mode of the additional information relating to the direction of terrestrial magnetic north.

Selon une troisième variante de réalisation de l'invention, la pièce d'horlogerie est une montre capable de fournir des indications météorologiques. Dans ce cas, l'aiguille additionnelle est utilisée pour donner des indications sur l'évolution des conditions climatiques.According to a third variant embodiment of the invention, the timepiece is a watch capable of providing meteorological indications. In this case, the additional needle is used to give indications on the evolution of the climatic conditions.

Selon une quatrième variante de réalisation de l'invention, l'aiguille indicatrice additionnelle est utilisée pour fournir l'indication du quantième du jour courant.According to a fourth variant embodiment of the invention, the additional indicator hand is used to provide the indication of the date of the current day.

D'autres caractéristiques et avantages de la présente invention ressortiront plus clairement de la description détaillée qui suit de divers modes de réalisation de la pièce d'horlogerie selon l'invention, ces exemples étant donnés à titre purement illustratif et non limitatif seulement en liaison avec le dessin annexé sur lequel:

  • la figure 1 est une vue schématique en coupe d'une boîte de montre électromécanique selon l'invention;
  • la figure 2 est une vue de dessous de la montre électromécanique selon l'invention sur laquelle est visible le fond transparent de cette montre;
  • la figure 3 est une vue analogue à celle de la figure 2 dans le cas où la fonction additionnelle consiste en une boussole;
  • la figure 4 est une vue analogue à celle de la figure 2 dans le cas où la fonction additionnelle est un indicateur barométrique, et
  • la figure 5 est une vue analogue à celle de la figure 2 dans le cas où la fonction additionnelle correspond à une indication de quantième.
Other characteristics and advantages of the present invention will emerge more clearly from the following detailed description of various embodiments of the timepiece according to the invention, these examples being given purely by way of non-limiting illustration only in conjunction with the attached drawing in which:
  • the figure 1 is a schematic sectional view of an electromechanical watch case according to the invention;
  • the figure 2 is a bottom view of the electromechanical watch according to the invention on which the transparent bottom of this watch is visible;
  • the figure 3 is a view similar to that of the figure 2 in the case where the additional function consists of a compass;
  • the figure 4 is a view similar to that of the figure 2 in the case where the additional function is a barometric indicator, and
  • the figure 5 is a view similar to that of the figure 2 in the case where the additional function corresponds to a date indication.

La présente invention procède de l'idée générale inventive qui consiste à reporter au dos d'une pièce d'horlogerie une indication d'une grandeur liée au temps ou d'un élément d'information non lié au temps. A cet effet, il est prévu de disposer du côté du fond de la pièce d'horlogerie une aiguille indicatrice qui est montée sur un axe solidaire de l'une des roues d'affichage de l'heure courante, de préférence la roue des secondes. La roue des secondes, autrement dit l'aiguille des secondes, et l'aiguille indicatrice additionnelle tournent donc en même temps d'un même angle en mode d'affichage de l'heure courante. En mode d'affichage de l'indication additionnelle, l'aiguille des secondes n'est plus entraînée par son moteur pour indiquer l'heure courante, mais pour permettre à l'aiguille additionnelle de fournir une indication relative à la fonction additionnelle. La présente invention possède ainsi deux avantages essentiels: d'une part, elle permet de reporter sur le fond de la pièce d'horlogerie l'indication d'une grandeur liée à une fonction additionnelle, ce qui permet de libérer de la place sur le cadran de la montre. Il est donc possible d'afficher sur le cadran des indications selon de plus grandes dimensions ou bien d'afficher une ou plusieurs indications supplémentaires. D'autre part, la présente invention ne nécessite pas de modifications substantielles des calibres existants. En effet, il suffit de prolonger l'axe de la roue des secondes pour pouvoir monter à l'extrémité libre de celui-ci l'aiguille additionnelle et de modifier quelque peu le logiciel de commande de la montre afin que le moteur qui entraîne normalement l'aiguille des secondes pour l'affichage de l'heure courante entraîne également celle-ci pour permettre à l'aiguille indicatrice disposée du côté du fond de la montre d'afficher l'information relative à la fonction additionnelle.The present invention proceeds from the general inventive idea which consists in transferring on the back of a timepiece an indication of a quantity linked to time or of an item of information not linked to time. To this end, provision is made to have on the bottom side of the timepiece an indicator hand which is mounted on an axis integral with one of the current time display wheels, preferably the seconds wheel . The seconds wheel, in other words the seconds hand, and the additional indicator hand therefore rotate at the same time by the same angle in current time display mode. In display mode of the additional indication, the second hand is no longer driven by its motor to indicate the current time, but to allow the additional hand to provide an indication relating to the additional function. The present invention thus has two essential advantages: on the one hand, it allows the indication of a quantity linked to an additional function to be transferred to the bottom of the timepiece, which frees up space on the watch face. It is therefore possible to display indications on the dial according to larger dimensions or to display one or more additional indications. On the other hand, the present invention does not require substantial modifications to the existing calibers. Indeed, it suffices to extend the axis of the seconds wheel in order to be able to mount the additional hand at the free end thereof and to modify the watch control software somewhat so that the motor which drives normally the second hand for displaying the current time also drives the latter to allow the indicator hand located on the back side of the watch to display information relating to the additional function.

La figure 1 est une vue schématique en coupe d'une boîte de montre électromécanique selon l'invention. Désignée dans son ensemble par la référence numérique générale 1, cette boîte de montre est délimitée vers le haut par un cadran 2 qui définit la face avant de la montre et au-dessus duquel se déplace un aiguillage 4 comprenant une aiguille des d'heures 6, une aiguille des minutes 8 et une aiguille des secondes 10. Cet aiguillage 4 est entraîné par un rouage 12 comprenant conventionnellement un mobile de minuterie formé d'un mobile des secondes 14 dont le pignon des secondes 16 reçoit les impulsions motrices d'un moteur (non représenté au dessin). Un axe 18 de pignon des secondes porte l'aiguille des secondes 10. Le montage est complété par un mobile des minutes 20 dont la roue des minutes 22 entraîne une chaussée 24 sur laquelle est fixée l'aiguille des minutes 8. Quant au pignon des minutes 26, il entraîne une roue des heures 28 sur laquelle est chassée l'aiguille des heures 6. Il va de soi que les différents mobiles formant le mobile de minuterie, au lieu d'être entraînés par un moteur unique, pourraient être entraînés chacun par un moteur indépendant.The figure 1 is a schematic sectional view of an electromechanical watch case according to the invention. Designated as a whole by the general reference numeral 1, this watch case is delimited upwards by a dial 2 which defines the front face of the watch and above which a switch 4 moves including an hour hand 6 , a minute hand 8 and a second hand 10. This switch 4 is driven by a train 12 conventionally comprising a timer mobile formed of a second mobile 14 whose second pinion 16 receives the driving impulses of a motor (not shown in the drawing). A second pinion axis 18 carries the second hand 10. The assembly is completed by a minute mobile 20 whose minute wheel 22 drives a carriageway 24 on which is fixed the minute hand 8. As for the pinion 26 minutes, it drives an hour wheel 28 on which the hour hand is driven. It goes without saying that the various mobiles forming the timer mobile, instead of being driven by a single motor, could each be driven by an independent motor.

Le fonctionnement de la montre est assuré par un mouvement électronique 30 logé dans le volume intérieur de la boîte de montre 1. L'alimentation en énergie électrique de la montre est assurée par une cellule photovoltaïque 32 disposée du côté d'un fond transparent 34 qui délimite la boîte de montre 1 vers le bas en définissant la face arrière de celle-ci. Cette cellule photovoltaïque 32 alimente en courant une batterie rechargeable 36.The operation of the watch is ensured by an electronic movement 30 housed in the interior volume of the watch case 1. The electric power supply of the watch is ensured by a photovoltaic cell 32 disposed on the side of a transparent bottom 34 which demarcates the watch case 1 downwards by defining the rear face thereof. This photovoltaic cell 32 supplies current to a rechargeable battery 36.

Selon l'invention, la longueur de l'axe de pignon des secondes 18 est augmentée d'une valeur typiquement comprise entre 0,5 et 3 mm pour tenir compte de la somme des épaisseurs d'une plaquette de circuit imprimé (non visible au dessin) sur laquelle est monté le mouvement électronique 30 et de la cellule photovoltaïque 32 et permettre ainsi à l'axe de pignon des secondes 18 de déboucher sur la face arrière de la boîte de montre 1. Par suite, et conformément à l'invention, on monte sur l'extrémité libre de l'axe de pignon des secondes 18 une aiguille indicatrice additionnelle 38 qui va se déplacer sous le fond transparent 34. On comprend que, par construction, l'aiguille indicatrice additionnelle 38 est montée en parallèle avec l'aiguille des secondes 10, de sorte que ces deux aiguilles 38 et 10 sont toujours entraînées en même temps et d'un même angle.According to the invention, the length of the second pinion axis 18 is increased by a value typically between 0.5 and 3 mm to take account of the sum of the thicknesses of a printed circuit board (not visible on the drawing) on which is mounted the electronic movement 30 and the photovoltaic cell 32 and thus allow the second pinion axis 18 to open onto the rear face of the watch case 1. As a result, and in accordance with the invention , an additional indicator needle 38 which will move under the transparent bottom 34 is mounted on the free end of the seconds pinion axis 18. It is understood that, by construction, the additional indicator needle 38 is mounted in parallel with the second hand 10, so that these two hands 38 and 10 are always driven at the same time and at the same angle.

Dans l'exemple représenté à la figure 1, la montre selon l'invention est une montre photovoltaïque. On va donc se servir de l'aiguille indicatrice additionnelle 38 pour indiquer à l'utilisateur l'état de charge de la batterie rechargeable 36. Comme la cellule photovoltaïque 32 est montée du côté du fond transparent 34 de la boîte de montre 1, l'effet photovoltaïque ne peut se produire que lorsque la boîte de montre 1 est retournée. Soit l'utilisateur retire sa montre du poignet et place celle-ci à l'envers sur un support, soit la montre est du type réversible, c'est-à-dire que la boîte de montre 1 est montée pivotante de 180° dans un cadre, et dans ce cas l'utilisateur peut retourner la boîte de montre 1 pour exposer la cellule photovoltaïque 32 à la lumière ambiante sans devoir quitter sa montre du poignet.In the example shown in figure 1 , the watch according to the invention is a photovoltaic watch. We will therefore use the additional indicator needle 38 to indicate to the user the state of charge of the rechargeable battery 36. As the photovoltaic cell 32 is mounted on the side of the transparent bottom 34 of the watch case 1, l The photovoltaic effect can only occur when the watch case 1 is turned over. Either the user removes his watch from the wrist and places it upside down on a support, or the watch is of the reversible type, that is to say that the watch case 1 is pivotally mounted 180 ° in a frame, and in this case the user can return the watch case 1 to expose the photovoltaic cell 32 to ambient light without having to leave his watch from the wrist.

Pour faire entrer la montre selon l'invention dans son mode d'affichage d'une indication additionnelle, deux solutions sont envisageables. La première consiste à munir la montre selon l'invention d'un bouton-poussoir ou autre moyen de commande additionnel par simple pression sur lequel l'utilisateur peut indiquer à la montre que celle-ci est retournée et qu'elle doit entrer dans son mode d'affichage d'une indication additionnelle. La seconde solution est propre aux montres solaires. Lorsque la montre est retournée et que la cellule photovoltaïque 32 est exposée à la luminosité ambiante, le circuit de commande de la montre détecte l'augmentation du courant produit par la cellule photovoltaïque 32 et en déduit que la montre est retournée. Par suite, le circuit de commande force la montre à entrer dans le mode d'affichage de la fonction additionnelle dans lequel l'aiguille indicatrice 38 de la fonction additionnelle indique à l'utilisateur l'état de charge de la batterie 36.To bring the watch according to the invention into its mode of displaying an additional indication, two solutions are possible. The first consists in providing the watch according to the invention with a push button or other additional control means by simple pressure on which the user can indicate to the watch that it has been returned and that it must enter its display mode of an additional indication. The second solution is specific to solar watches. When the watch is returned and the photovoltaic cell 32 is exposed to ambient light, the control circuit of the watch detects the increase in the current produced by the photovoltaic cell 32 and deduces therefrom that the watch is returned. Consequently, the control circuit forces the watch to enter the display mode of the additional function in which the indicator hand 38 of the additional function indicates to the user the state of charge of the battery 36.

On comprendra que lorsque la montre selon l'invention entre dans son mode d'affichage de la fonction additionnelle, elle ne peut plus indiquer l'heure courante. En effet, comme déjà mentionné ci-dessus, l'aiguille indicatrice additionnelle 38 est solidaire de l'axe de pignon de seconde 18 sur lequel est chassée l'aiguille des secondes 10, de sorte que ces deux aiguilles 38 et 10 sont toujours entraînées en même temps et d'un même angle. Par conséquent, lorsque l'aiguille indicatrice additionnelle 38 se déplace sous le fond transparent 34 pour fournir à l'utilisateur une information relative à la fonction additionnelle, l'aiguille des secondes 10 bouge de concert et l'affichage de l'heure courante est faussé. Ceci n'est toutefois pas problématique dans la mesure où, lorsque l'utilisateur retourne sa montre pour consulter les informations fournies par l'aiguille indicatrice additionnelle 38, il ne peut voir en même temps l'affichage de l'heure courante sur la face avant de la montre. Il est cependant tout à fait envisageable de commander la remise à l'heure de la montre à intervalles de temps réguliers, par exemple toutes les minutes, en entraînant les aiguilles 6, 8 et 10 d'affichage de l'heure courante à haute vitesse, typiquement à une vitesse de cinq tours par seconde, pour corriger l'indication de l'heure courante. Cette variante est particulièrement intéressante dans le cas où la montre selon l'invention reste retournée pendant un laps de temps assez long.It will be understood that when the watch according to the invention enters its display mode of the additional function, it can no longer indicate the current time. Indeed, as already mentioned above, the additional indicator needle 38 is integral with the second pinion axis 18 on which the second hand 10 is driven, so that these two needles 38 and 10 are always driven at the same time and from the same angle. Consequently, when the additional indicator hand 38 moves under the transparent bottom 34 to provide the user with information relating to the additional function, the second hand 10 moves in concert and the display of the current time is distorted. This is not, however, problematic since, when the user turns over his watch to consult the information provided by the additional indicator hand 38, he cannot at the same time see the display of the current time on the face. front of the watch. It is however entirely conceivable to order the reset of the time of the watch at regular time intervals, for example every minute, by driving hands 6, 8 and 10 to display the current time at high speed. , typically at a speed of five revolutions per second, to correct the indication of the current time. This variant is particularly advantageous in the case where the watch according to the invention remains returned for a fairly long period of time.

Les aiguilles d'heures 6, de minutes 8 et de secondes 10 peuvent être entraînées par un moteur unique. Dans ce cas, l'ensemble des aiguilles d'affichage de l'heure courante tourne lorsque la montre entre dans son mode d'affichage de la fonction additionnelle. Il est également possible que chacune des aiguilles d'affichage de l'heure courante soit entraînée par un moteur qui lui est propre. Dans ce cas, seule l'aiguille d'affichage des secondes 10 est entraînée par l'aiguille indicatrice additionnelle 38 lorsque celle-ci se déplace.The hour 6, minute 8 and second 10 hands can be driven by a single motor. In this case, all the hands for displaying the current time rotate when the watch enters its display mode for the additional function. It is also possible that each of the display hands for the current time is driven by its own motor. In this case, only the seconds display hand 10 is driven by the additional indicator hand 38 when the latter moves.

Dans ce qui précède, on a décrit le cas où l'aiguille indicatrice additionnelle 38 est montée sur l'axe de pignon de seconde 18 qui porte l'aiguille des secondes 10 à son extrémité opposée. Il va de soi qu'il est également envisageable de monter l'aiguille indicatrice additionnelle 38 sur un axe quelconque du rouage 12 de la montre pour peu que l'on augmente la longueur de cet axe pour le faire déboucher sur la face arrière de la montre.In the foregoing, the case has been described where the additional indicator hand 38 is mounted on the second pinion axis 18 which carries the second hand 10 at its opposite end. It goes without saying that it is also possible to mount the additional indicator needle 38 on any axis of the gear train 12 of the watch provided that the length of this axis is increased to make it open onto the rear face of the watch.

La figure 2 est une vue de dessous de la montre électromécanique selon l'invention sur laquelle est visible le fond transparent 34 de cette montre. Des symboles sont reportés par tout moyen approprié sur la face intérieure du fond transparent 34. Une première série d'icônes 40a-40d représentant le soleil permet d'afficher l'intensité de la charge en fonction du degré d'ensoleillement. Une seconde série d'icônes 42a-42c représentant la batterie dans plusieurs états de charge permet d'indiquer l'état de charge de la batterie 36.The figure 2 is a bottom view of the electromechanical watch according to the invention on which the transparent bottom 34 of this watch is visible. Symbols are reported by any appropriate means on the inner face of the transparent background 34. A first series of icons 40a-40d representing the sun makes it possible to display the intensity of the charge as a function of the degree of sunshine. A second series of icons 42a-42c representing the battery in several states of charge makes it possible to indicate the state of charge of the battery 36.

A titre d'exemple purement illustratif et non limitatif seulement, on peut envisager d'implémenter dans le circuit de commande du mouvement électronique 30 un algorithme permettant de combiner l'affichage de la puissance de la charge et l'affichage de l'état de la charge de la batterie 36 au moyen de la seule aiguille indicatrice additionnelle 38 selon le principe de fonctionnement suivant. Au-dessus d'un certain seuil d'ensoleillement, par exemple 10 kLux, l'aiguille indicatrice additionnelle 38 affiche l'intensité de la charge de la batterie 36 en pointant sur l'un des symboles 40a-40d représentant le soleil. Lorsque la batterie 36 est chargée, l'aiguille indicatrice additionnelle 38 pointe sur le symbole 42a indiquant que la batterie 36 est pleine et ce quelle que soit l'intensité de l'ensoleillement. Enfin, au-dessous du seuil d'ensoleillement de 10 kLux, l'aiguille indicatrice additionnelle 38 indique l'état de charge de la batterie 36 en pointant sur l'une des icônes 42a-42c représentant la batterie 36 dans plusieurs états de charge. En effet, au-dessous du seuil d'ensoleillement de 10 kLux, la batterie 36 ne se charge pas ou pratiquement pas, car l'intensité de la lumière est trop faible. Après un certain temps dans ce mode, la montre retourne dans le mode d'affichage de l'heure courante.By way of purely illustrative and nonlimiting example only, it is conceivable to implement in the electronic movement control circuit 30 an algorithm making it possible to combine the display of the power of the load and the display of the state of charging the battery 36 by means of the single additional indicator needle 38 according to the following operating principle. Above a certain sunshine threshold, for example 10 kLux, the additional indicator hand 38 displays the intensity of the charge of the battery 36 by pointing to one of the symbols 40a-40d representing the sun. When the battery 36 is charged, the additional indicator needle 38 points to the symbol 42a indicating that the battery 36 is full and this regardless of the intensity of the sunshine. Finally, below the sunshine threshold of 10 kLux, the additional indicator hand 38 indicates the state of charge of the battery 36 by pointing to one of the icons 42a-42c representing the battery 36 in several states of charge . Indeed, below the threshold of sunshine of 10 kLux, the battery 36 does not charge or practically does not, because the intensity of the light is too weak. After a certain time in this mode, the watch returns to the display mode of the current time.

Ainsi, l'utilisateur sait en permanence si la batterie 36 est en charge ou non et il peut contrôler le bon positionnement de la montre par rapport à l'éclairage disponible. L'utilisateur peut à tout moment vérifier la progression de la charge en ombrageant la montre afin de descendre en-dessous du seuil d'ensoleillement. Il peut ensuite remettre la montre au soleil et être immédiatement informé de la puissance de charge disponible.Thus, the user constantly knows whether the battery 36 is charged or not and he can control the correct positioning of the watch relative to the available lighting. The user can at any time check the progress of the load by shading the watch in order to descend below the sunshine threshold. He can then put the watch back in the sun and be immediately informed of the available charging power.

La figure 3 est une vue analogue à celle de la figure 2 dans le cas où la fonction additionnelle consiste en une boussole. Dans ce cas, soit la montre dispose de moyens lui permettant de détecter qu'elle a été retournée, soit l'utilisateur actionne un moyen de commande lui permettant d'indiquer à la montre que celle-ci est retournée et qu'elle doit entrer dans son mode d'affichage d'une indication additionnelle. Dans le cas présent, l'aiguille indicatrice additionnelle 38 va indiquer la direction du nord magnétique terrestre.The figure 3 is a view similar to that of the figure 2 in the case where the additional function consists of a compass. In this case, either the watch has means allowing it to detect that it has been returned, or the user activates a control means allowing it to indicate to the watch that it has been returned and that it must enter in its display mode of an additional indication. In the present case, the additional indicator hand 38 will indicate the direction of the terrestrial magnetic north.

La figure 4 est une vue analogue à celle de la figure 2 dans le cas où la fonction additionnelle est un indicateur barométrique. Lorsque la montre entre dans son mode d'affichage d'une indication additionnelle, l'aiguille indicatrice additionnelle 38 va se positionner de part ou d'autre d'un index 44 pour indiquer soit une augmentation de la pression atmosphérique et donc une amélioration des conditions météorologiques, soit une diminution de la pression atmosphérique et donc une dégradation du temps.The figure 4 is a view similar to that of the figure 2 in the case where the additional function is a barometric indicator. When the watch enters its mode of displaying an additional indication, the additional indicator hand 38 will position itself on either side of an index 44 to indicate either an increase in atmospheric pressure and therefore an improvement in weather conditions, a decrease in atmospheric pressure and therefore a deterioration of weather.

La figure 5 est une vue analogue à celle de la figure 2 dans le cas où la fonction additionnelle correspond à une indication de quantième. Lorsque la montre entre dans son mode d'affichage d'une indication additionnelle, l'aiguille indicatrice additionnelle 38 va pointer pendant un laps de temps prédéterminé sur le quantième du jour courant.The figure 5 is a view similar to that of the figure 2 in the case where the additional function corresponds to a date indication. When the watch enters its display mode of an additional indication, the additional indicator hand 38 will point for a predetermined period of time on the date of the current day.

Il va de soi que la présente invention n'est pas limitée au mode de réalisation qui vient d'être décrit et que diverses modifications et variantes simples peuvent être envisagées par l'homme du métier sans sortir du cadre de l'invention tel que défini par les revendications annexées à la présente demande de brevet. On comprendra notamment que si les aiguilles d'heures et de minutes et, le cas échéant, de secondes sont entraînées par un moteur électrique unique, ces aiguilles tourneront en même que l'aiguille indicatrice additionnelle. Par contre, si ces aiguilles sont entraînées chacune par un moteur indépendant, seule l'aiguille d'affichage de l'heure sur l'axe de laquelle sera montée l'aiguille indicatrice additionnelle tournera en même temps et d'un même angle que cette aiguille indicatrice. On peut également envisager d'équiper la montre selon l'invention d'un détecteur d'inclinaison permettant au circuit de commande de la montre de détecter que celle-ci est en position retournée.It goes without saying that the present invention is not limited to the embodiment which has just been described and that various modifications and simple variants can be envisaged by those skilled in the art without departing from the scope of the invention as defined. by the claims appended to this patent application. It will be understood in particular that if the hour and minute hands and, where appropriate, seconds hands are driven by a single electric motor, these hands will rotate in the same way as the additional indicator hand. However, if these needles are each driven by an independent motor, only the hour display hand on the axis of which will be mounted the additional indicator hand will rotate at the same time and by the same angle as this indicator hand. One can also consider equipping the watch according to the invention with a tilt detector allowing the watch control circuit to detect that the watch is in the inverted position.

Claims (5)

  1. Electromechanical timepiece fitted with a gear train (12) comprising at least an hour hand (6) and a minute hand (8) for the current time display on the dial (2) side of the timepiece, said hour hand (6) and said minute hand (8) being driven by a common electric motor or by separate electric motors, the timepiece (1) further being arranged to provide at least one additional piece of information relating to a non-time related piece of information, said timepiece further including an additional indicator hand (38) arranged to display the additional information, characterized in that said additional indicator hand (38) is mounted on the back cover (34) side of the timepiece (1) on an arbour of the gear train (12) of said timepiece, so that the additional indicator hand (38) and the hour hand (6) and/or minute hand (8) rotate at the same time and at the same angle, the hour hand (6) and/or the minute hand (8) being driven either to display the current time, or to enable the additional indicator hand (38) to indicate the additional information, the timepiece to this end either including an additional control means which the user activates in order to tell the timepiece (1) that it has been turned over, or a means arranged to enable the timepiece (1) to detect that it has been turned over and to enter into an additional information display mode.
  2. Timepiece according to claim 1, characterized in that it includes means arranged to correct the current time indication at regular time intervals when the timepiece (1) is in the additional information display mode.
  3. Timepiece according to any of claims 1 or 2, characterized in that it further includes a seconds pinion (16) on an arbour (18) of which the additional indicator hand (38) is rigidly mounted.
  4. Timepiece according to any of claims 1 to 3, characterized in that it includes a photovoltaic cell (32) arranged on the back cover (34) side of the timepiece (1), said photovoltaic cell (32) supplying electric current to a rechargeable battery (36), and the additional indicator hand (38) being arranged to indicate the state of charge of the rechargeable battery (36) to the user.
  5. Timepiece according to claim 4, characterized in that it includes means arranged to cause said timepiece to enter into an additional information display mode relating to the state of charge of the rechargeable battery (36) when said means detects an increase in the current produced by the photovoltaic cell (32).
EP11183105.3A 2011-09-28 2011-09-28 Electromechanical timepiece with an additional function Active EP2574995B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP11183105.3A EP2574995B1 (en) 2011-09-28 2011-09-28 Electromechanical timepiece with an additional function
US13/617,658 US9019801B2 (en) 2011-09-28 2012-09-14 Electromechanical timepiece provided with an additional function
CN201210367721.7A CN103034110B (en) 2011-09-28 2012-09-28 Be provided with the electromechanical timepiece of additional function
JP2012215766A JP5658722B2 (en) 2011-09-28 2012-09-28 Electromechanical clock with additional functions
HK13111453.2A HK1184239A1 (en) 2011-09-28 2013-10-10 Electromechanical timepiece provided with an additional function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11183105.3A EP2574995B1 (en) 2011-09-28 2011-09-28 Electromechanical timepiece with an additional function

Publications (2)

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EP2574995A1 EP2574995A1 (en) 2013-04-03
EP2574995B1 true EP2574995B1 (en) 2020-06-17

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EP11183105.3A Active EP2574995B1 (en) 2011-09-28 2011-09-28 Electromechanical timepiece with an additional function

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US (1) US9019801B2 (en)
EP (1) EP2574995B1 (en)
JP (1) JP5658722B2 (en)
CN (1) CN103034110B (en)
HK (1) HK1184239A1 (en)

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CN103345139A (en) * 2013-07-04 2013-10-09 李观伟 Retrograding movement
EP2887159B1 (en) * 2013-12-18 2018-10-31 ETA SA Manufacture Horlogère Suisse Optimised multifunctional display device
US9483029B2 (en) 2014-03-06 2016-11-01 Seiko Epson Corporation Timepiece and electronic timepiece
GB2543293B (en) * 2015-10-13 2021-10-20 Bramwell Brown Ltd Iris barometer clock
JP2017106753A (en) * 2015-12-07 2017-06-15 セイコーエプソン株式会社 Electronic watch and display control method for the same
JP2017181074A (en) * 2016-03-28 2017-10-05 セイコーエプソン株式会社 Electronic timepiece
USD831035S1 (en) * 2016-12-14 2018-10-16 United Services Automobile Association (Usaa) Display screen with animated graphical user interface
JP6981204B2 (en) * 2017-11-24 2021-12-15 トヨタ自動車株式会社 vehicle
USD966328S1 (en) * 2019-09-04 2022-10-11 Huawei Technologies Co., Ltd. Electronic display for a wearable device with an animated graphical user interface

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Publication number Publication date
HK1184239A1 (en) 2014-01-17
CN103034110B (en) 2015-09-09
JP5658722B2 (en) 2015-01-28
JP2013072877A (en) 2013-04-22
US20130077450A1 (en) 2013-03-28
CN103034110A (en) 2013-04-10
US9019801B2 (en) 2015-04-28
EP2574995A1 (en) 2013-04-03

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