EP2574995A1 - Electromechanical timepiece with an additional function - Google Patents

Electromechanical timepiece with an additional function Download PDF

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Publication number
EP2574995A1
EP2574995A1 EP11183105A EP11183105A EP2574995A1 EP 2574995 A1 EP2574995 A1 EP 2574995A1 EP 11183105 A EP11183105 A EP 11183105A EP 11183105 A EP11183105 A EP 11183105A EP 2574995 A1 EP2574995 A1 EP 2574995A1
Authority
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.)
Granted
Application number
EP11183105A
Other languages
German (de)
French (fr)
Other versions
EP2574995B1 (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 Manufacture Horlogere Suisse SA
Original Assignee
ETA Manufacture Horlogere Suisse SA
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 Manufacture Horlogere Suisse SA filed Critical ETA Manufacture Horlogere Suisse SA
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 additional indication in addition to displaying the current time.
  • An example of such a watch is a solar watch comprising a rechargeable battery powered by a photovoltaic cell and capable of providing its user with an indication of the state of charge of the battery.
  • Another example of such a watch is a compass watch capable of indicating to its user the direction of the magnetic north in addition to indicating the current time.
  • a major trend in the field of watchmaking is to provide 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.
  • the current timepieces can also include electronic functions such as a compass or be powered by an accumulator that can be recharged by means of a solar cell and that must provide an indication of the state of charge to the user.
  • the first of these strategies consists in equipping the watch with, for example, tactile keys that allow the user, from a basic mode of operation of the watch in which it typically displays the current time, access sub-menus for enabling the auxiliary function or functions.
  • the technology of tactile keys is however relatively expensive, which reserves it rather to high-end watches.
  • the second strategy is to display all the functions of the watch by means of auxiliary dials arranged on the dial of the watch. In this case, however, it is necessarily limited by the space available on the surface of the dial and the concern that the information provided by the watch remains readable for its user.
  • the object of the present invention is to remedy the aforementioned problems as well as others by providing an electromechanical timepiece which, in addition to the indication of the current time, is capable of providing at least one additional indication relating to an additional function, this additional indication being able to be a temporal value or a non-time related piece of information.
  • the present invention relates to an electromechanical timepiece having a work train comprising at least one hour hand and a minute hand for displaying the current time on the side of a dial of the workpiece. clock, this hour hand and minute hand being driven by a common electric motor or by separate electric motors, the timepiece being further arranged to provide at least additional information relating to a time size or to non-time-related information, this timepiece being characterized in that it further comprises an additional indicator hand arranged to display the additional information, this additional indicator hand being mounted on the side of a bottom of the workpiece.
  • the present invention provides a timepiece arranged to provide in addition to the indication of the current time on the dial side, an additional indication which is displayed not on the dial side but on the bottom side of the dial. timepiece. This saves space in the dial which can be used either to display the time or other indications in larger dimensions, or to display one or more additional indications. As for the user, it is enough for him to turn over his watch to be able to read the additional indication. It will be understood that in normal operating mode, the indicator needle of the additional function, mounted fixed on an axis of the train, is driven at the same time and at the same speed as this axis.
  • the timepiece is equipped either with means that make it possible to automatically detect when the timepiece is turned over, or with a control member that can be actuated by the user to indicate to the piece clock that this one is returned.
  • the timepiece when the timepiece is returned, it enters an operating mode in which the display wheels of the current time on the axis of which is mounted the indicator needle of the additional function is more driven by its engine to indicate the current time, but is driven by the same engine to allow the indicator needle mounted on the bottom side of the watch to provide the indication of the additional function.
  • the timepiece no longer provides an accurate indication of the current time.
  • this is not detrimental because when the user consults the additional function indication, he keeps his watch returned, so that he can not read the indication of the current time provided by the needles d hours and minutes moving above the dial of the watch.
  • the indicator needle of the additional function is mounted on an axis integral with the second gear.
  • the seconds hand and the indicator needle of the additional function therefore turn at the same time and at the same angle in the current time display mode.
  • the second hand is no longer driven by its motor to display the current time, but to allow the indicator needle mounted on the side of the bottom 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 bottom of the watch and whose additional indicator hand is used to indicate to the wearer of the watch. state of charge of the battery powered 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 that falls on the photovoltaic cell and deduces that it is returned.
  • the watch enters the display mode of the additional function in which the indicator needle 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 the 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 additional function.
  • the second hand is no longer driven by its engine to display the current time, but to allow the additional needle 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 the earth's magnetic north.
  • the timepiece is a watch capable of providing meteorological indications.
  • the additional needle is used to give indications on the evolution of climatic conditions.
  • the additional indicator needle is used to provide the indication of the day of the current day.
  • the present invention proceeds from the general inventive idea that is to report to the back of a timepiece an indication of a magnitude related to time or an item of information not related to time.
  • it is intended to have on the bottom side of the timepiece an indicator needle which is mounted on an axis integral with one of the display wheels of the current time, preferably the seconds wheel. .
  • the seconds wheel in other words the seconds hand, and the additional indicator hand thus turn at the same time at the same angle in the display mode of the current time.
  • additional indication mode 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 of the additional function.
  • the present invention thus has two essential advantages: on the one hand, it allows to postpone the indication of a quantity linked to an additional function on the bottom of the timepiece, which makes it possible to free up space on the watch face. It is therefore possible to display on the dial indications in larger dimensions or to display one or more additional indications.
  • the present invention does not require substantial modifications of the existing templates. Indeed, it is sufficient to extend the axis of the seconds wheel to be able to mount at the free end thereof the additional needle and to modify somewhat the control software of the watch so that the engine that normally drives the second hand for displaying the current time also causes it to allow the pointer on the side of the bottom of the watch to display the 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 towards the at the top by a dial 2 which defines the front face of the watch and above which a switch 4 is moved comprising a 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 mobile seconds 14 whose second gear 16 receives the driving pulses of a motor (not shown in the drawing).
  • An axis 18 of the second pinion carries the second hand 10.
  • the assembly is completed by a motive minute 20 whose minute wheel 22 drives a roadway 24 on which is fixed the minute hand 8.
  • the pinion 26 minutes it drives a wheel hours 28 on which is driven the hour hand 6.
  • the operation of the watch is provided by an electronic movement 30 housed in the interior volume of the watch case 1.
  • the power supply of the watch is provided by a photovoltaic cell 32 arranged 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 a rechargeable battery 36 with power.
  • the length of the pinion axis of the seconds 18 is increased by a value typically between 0.5 and 3 mm to take into account the sum of the thicknesses of a printed circuit board (not visible at drawing) on which is mounted the electronic movement 30 and the photovoltaic cell 32 and thus allow the second pinion pin 18 to lead to the rear face of the watch case 1.
  • a further indicator needle 38 is mounted on the free end of the second pinion shaft 18 and will move under the transparent bottom 34. It will be understood that, by construction, the additional indicator needle 38 is mounted in parallel with the seconds hand 10, so that these two needles 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 additional indicator needle 38 will therefore be used to indicate to the user the state of charge of the rechargeable battery 36.
  • the photovoltaic cell 32 is mounted on the side of the transparent bottom 34 of the watch case 1, the Photovoltaic effect can occur only when the watch case 1 is returned. 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 wristwatch.
  • the first is to provide 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 is returned and that it must enter its display mode of an additional indication.
  • the second solution is specific to solar watches.
  • the watch control circuit detects the increase in the current produced by the photovoltaic cell 32 and deduces that the watch is returned. As a result, the control circuit forces the watch to enter the display mode of the additional function in which the indicator needle 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 pin 18 on which the seconds hand 10 is driven, so that these two needles 38 and 10 are always driven. at the same time and from the same angle. Therefore, 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 moves in concert and the current time display is displayed. distorted. This is however not problematic in that, when the user returns his watch to view the information provided by the additional indicator hand 38, he can not see at the same time the display of the current time on the face before the watch.
  • the hour hands 6, 8 minutes and 10 seconds can be driven by a single motor. In this case, all the display hands of the current time turn when the watch enters its display mode of the additional function. It is also possible that each of the display hands of the current time is driven by a motor of its own. In this case, only the second display hand 10 is driven by the additional indicator hand 38 as it moves.
  • the additional indicator hand 38 is mounted on the second gear pinion 18 which carries the second hand at its opposite end. It goes without saying that it is also possible to mount the additional indicator hand 38 on any axis of the wheel 12 of the watch as long as one increases the length of this axis to make it lead to the rear face of the watch.
  • the figure 2 is a view from below of the electromechanical watch according to the invention on which is visible the transparent bottom 34 of this watch. Symbols are reported by any appropriate means on the inner face of the transparent bottom 34.
  • a first series of icons 40a-40d representing the sun can display the intensity of the load 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 needle 38 displays the intensity of the charging of the battery 36 by pointing at 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 whatever the intensity of the sun.
  • 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 almost no, because the intensity of the light is too low. After a while in this mode, the watch will return to the current time display mode.
  • the user always knows if the battery 36 is charging or not and he can control the correct positioning of the watch with respect to available lighting.
  • the user can at any time check the progress of the load by shading the watch to go below the sunshine threshold. He can then return the watch to 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 enabling it to detect that it has been returned, or the user activates a control means allowing him to indicate to the watch that it is returned and that it must enter in its display mode an additional indication.
  • the additional indicator hand 38 will indicate the direction of the earth's 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 needle 38 When the watch enters in its display mode an additional indication, the additional indicator needle 38 will be positioned 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 needle 38 will point for a predetermined period of time on the day of the current day.

Abstract

The timepiece has hour and minute hands that display current time on a dial side of timepiece. The timepiece provides portion of information related to time and non-time related portions of information. An indicator hand (38) displays the additional information. The indicator hand is mounted on back cover side of timepiece on arbor of gear train of timepiece, so that the indicator, hour and minute hands are rotated at same time and angle. The hour hand and minute hand is driven to display the current time and to enable the indicator hand to indicate the information.

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 additional indication in addition to displaying the current time. An example of such a watch is a solar watch comprising a rechargeable battery powered by a photovoltaic cell and capable of providing its user with an indication of the state of charge of the battery. Another example of such a watch is a compass watch capable of indicating to its user the direction of the 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 field of watchmaking is to provide watches capable of displaying an ever increasing number of indications. Thus, in addition to indicating 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. The current timepieces can also include electronic functions such as a compass or be powered by an accumulator that can be recharged by means of a solar cell and that must provide an indication of the state of charge 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 of the number of functions to display, two different strategies are possible. The first of these strategies consists in equipping the watch with, for example, tactile keys that allow the user, from a basic mode of operation of the watch in which it typically displays the current time, access sub-menus for enabling the auxiliary function or functions. The technology of tactile keys is however relatively expensive, which reserves it rather to high-end watches. The second strategy is to display all the functions of the watch by means of auxiliary dials arranged on the dial of the watch. In this case, however, it is necessarily limited by the space available on the surface of the dial and the concern that the information provided by the watch remains readable for its user.

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 object of the present invention is to remedy the aforementioned problems as well as others by providing an electromechanical timepiece which, in addition to the indication of the current time, is capable of providing at least one additional indication relating to an additional function, this additional indication being able to be a temporal value or a non-time related piece of information.

A cet effet, la présente invention concerne une pièce d'horlogerie électromécanique dotée d'un rouage comprenant au moins une aiguille des heures et une aiguille des minutes pour l'affichage de l'heure courante du côté d'un cadran de la pièce d'horlogerie, cette aiguille des heures et cette aiguille des minutes étant entraînées par un moteur électrique commun ou par des moteurs électriques distincts, la pièce d'horlogerie étant en outre agencée pour fournir au moins une information additionnelle relative à une grandeur temporelle ou bien à une information non liée au temps, cette pièce d'horlogerie étant caractérisée en ce qu'elle comprend de plus une aiguille indicatrice additionnelle agencée pour afficher l'information additionnelle, cette aiguille indicatrice additionnelle étant montée du côté d'un fond de la pièce d'horlogerie sur un axe du rouage de ladite pièce d'horlogerie, de sorte que l'aiguille indicatrice additionnelle et l'aiguille des heures et/ou l'aiguille des minutes tournent en même temps et d'un même angle, l'aiguille des heures et/ou l'aiguille des minutes étant entraînées soit pour afficher l'heure courante, soit pour permettre à l'aiguille indicatrice additionnelle d'afficher l'information additionnelle.For this purpose, the present invention relates to an electromechanical timepiece having a work train comprising at least one hour hand and a minute hand for displaying the current time on the side of a dial of the workpiece. clock, this hour hand and minute hand being driven by a common electric motor or by separate electric motors, the timepiece being further arranged to provide at least additional information relating to a time size or to non-time-related information, this timepiece being characterized in that it further comprises an additional indicator hand arranged to display the additional information, this additional indicator hand being mounted on the side of a bottom of the workpiece. watchmaking on an axis of the wheel of said timepiece, so that the additional indicator hand and the hour hand the minute hand turns at the same time and at the same angle, the hour hand and / or the minute hand being driven either to display the current time, either to allow the additional indicator hand to display additional information.

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 features, the present invention provides a timepiece arranged to provide in addition to the indication of the current time on the dial side, an additional indication which is displayed not on the dial side but on the bottom side of the dial. timepiece. This saves space in the dial which can be used either to display the time or other indications in larger dimensions, or to display one or more additional indications. As for the user, it is enough for him to turn over his watch to be able to read the additional indication. It will be understood that in normal operating mode, the indicator needle of the additional function, mounted fixed on an axis of the train, is driven at the same time and at the same speed as this axis.

Selon une caractéristique complémentaire de l'invention, 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.According to a complementary characteristic of the invention, the timepiece is equipped either with means that make it possible to automatically detect when the timepiece is turned over, or with a control member that can be actuated by the user to indicate to the piece clock that this one 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 an operating mode in which the display wheels of the current time on the axis of which is mounted the indicator needle of the additional function is more driven by its engine to indicate the current time, but is driven by the same engine to allow the indicator needle mounted on the bottom side of the watch to provide the indication of the additional function. During this time, the timepiece no longer provides an accurate indication of the current time. However, this is not detrimental because when the user consults the additional function indication, he keeps his watch returned, so that he can not read the indication of the current time provided by the needles d hours and minutes moving above the dial of the watch. However, to correct this problem, it may be envisaged, 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 indicator needle of the additional function is mounted on an axis integral with the second gear. The seconds hand and the indicator needle of the additional function therefore turn at the same time and at the same angle in the current time display mode. 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 needle mounted on the side of the bottom 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 bottom of the watch and whose additional indicator hand is used to indicate to the wearer of the watch. state of charge of the battery powered by the photovoltaic cell. When the user wears his solar wrist watch, 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 that falls on the photovoltaic cell and deduces that it is returned. The watch then enters the display mode of the additional function in which the indicator needle 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 the 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 additional function. The second hand is no longer driven by its engine to display the current time, but to allow the additional needle 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 the earth's 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 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 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 needle is used to provide the indication of the day 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 features 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 illustration and not limitation only in connection with the appended 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 view from below of the electromechanical watch according to the invention on which is visible the transparent bottom of this watch;
  • 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 that is to report to the back of a timepiece an indication of a magnitude related to time or an item of information not related to time. For this purpose, it is intended to have on the bottom side of the timepiece an indicator needle which is mounted on an axis integral with one of the display wheels of the current time, preferably the seconds wheel. . The seconds wheel, in other words the seconds hand, and the additional indicator hand thus turn at the same time at the same angle in the display mode of the current time. In additional indication mode, 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 of the additional function. The present invention thus has two essential advantages: on the one hand, it allows to postpone the indication of a quantity linked to an additional function on the bottom of the timepiece, which makes it possible to free up space on the watch face. It is therefore possible to display on the dial indications in larger dimensions or to display one or more additional indications. On the other hand, the present invention does not require substantial modifications of the existing templates. Indeed, it is sufficient to extend the axis of the seconds wheel to be able to mount at the free end thereof the additional needle and to modify somewhat the control software of the watch so that the engine that normally drives the second hand for displaying the current time also causes it to allow the pointer on the side of the bottom of the watch to display the 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 towards the at the top by a dial 2 which defines the front face of the watch and above which a switch 4 is moved comprising a 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 mobile seconds 14 whose second gear 16 receives the driving pulses of a motor (not shown in the drawing). An axis 18 of the second pinion carries the second hand 10. The assembly is completed by a motive minute 20 whose minute wheel 22 drives a roadway 24 on which is fixed the minute hand 8. As for the pinion 26 minutes, it drives a wheel hours 28 on which is driven the hour hand 6. It goes without saying that the different mobile forming the mobile timer, instead of being driven by a single engine, could be driven each 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 provided by an electronic movement 30 housed in the interior volume of the watch case 1. The power supply of the watch is provided by a photovoltaic cell 32 arranged 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 a rechargeable battery 36 with power.

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 pinion axis of the seconds 18 is increased by a value typically between 0.5 and 3 mm to take into account the sum of the thicknesses of a printed circuit board (not visible at drawing) on which is mounted the electronic movement 30 and the photovoltaic cell 32 and thus allow the second pinion pin 18 to lead to the rear face of the watch case 1. As a result, and in accordance with the invention a further indicator needle 38 is mounted on the free end of the second pinion shaft 18 and will move under the transparent bottom 34. It will be understood that, by construction, the additional indicator needle 38 is mounted in parallel with the seconds hand 10, so that these two needles 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. The additional indicator needle 38 will therefore be used 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, the Photovoltaic effect can occur only when the watch case 1 is returned. 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 wristwatch.

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 display mode an additional indication, two solutions are possible. The first is to provide 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 is 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 the ambient light, the watch control circuit detects the increase in the current produced by the photovoltaic cell 32 and deduces that the watch is returned. As a result, the control circuit forces the watch to enter the display mode of the additional function in which the indicator needle 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 pin 18 on which the seconds hand 10 is driven, so that these two needles 38 and 10 are always driven. at the same time and from the same angle. Therefore, 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 moves in concert and the current time display is displayed. distorted. This is however not problematic in that, when the user returns his watch to view the information provided by the additional indicator hand 38, he can not see at the same time the display of the current time on the face before the watch. However, it is quite possible to order the reset to the time of the watch at regular time intervals, for example every minute, driving the needles 6, 8 and 10 of the current time display at high speed typically at a speed of five revolutions per second, to correct the indication of the current time. This variant is particularly interesting in the case where the watch according to the invention remains returned for a relatively 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 hands 6, 8 minutes and 10 seconds can be driven by a single motor. In this case, all the display hands of the current time turn when the watch enters its display mode of the additional function. It is also possible that each of the display hands of the current time is driven by a motor of its own. In this case, only the second display hand 10 is driven by the additional indicator hand 38 as it 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, there is described the case where the additional indicator hand 38 is mounted on the second gear pinion 18 which carries the second hand at its opposite end. It goes without saying that it is also possible to mount the additional indicator hand 38 on any axis of the wheel 12 of the watch as long as one increases the length of this axis to make it lead to 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 view from below of the electromechanical watch according to the invention on which is visible the transparent bottom 34 of this watch. Symbols are reported by any appropriate means on the inner face of the transparent bottom 34. A first series of icons 40a-40d representing the sun can display the intensity of the load 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 a purely illustrative and nonlimiting example only, it is conceivable to implement in the control circuit of the electronic movement 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 hand 38 according to the following operating principle. Above a certain sunshine threshold, for example 10 kLux, the additional indicator needle 38 displays the intensity of the charging of the battery 36 by pointing at 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 whatever the intensity of the sun. 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 sunshine threshold of 10 kLux, the battery 36 does not charge or almost no, because the intensity of the light is too low. After a while in this mode, the watch will return to the current time display mode.

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 always knows if the battery 36 is charging or not and he can control the correct positioning of the watch with respect to available lighting. The user can at any time check the progress of the load by shading the watch to go below the sunshine threshold. He can then return the watch to 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 enabling it to detect that it has been returned, or the user activates a control means allowing him to indicate to the watch that it is returned and that it must enter in its display mode an additional indication. In the present case, the additional indicator hand 38 will indicate the direction of the earth's 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 in its display mode an additional indication, the additional indicator needle 38 will be positioned 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 needle 38 will point for a predetermined period of time on the day 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, if appropriate, seconds are driven by a single electric motor, these needles will rotate together with the additional indicator hand. On the other hand, if these needles are each driven by an independent motor, only the hour display hand on the axis of which the additional indicator hand will be mounted will turn at the same time and at the same angle as this indicator needle. One can also consider equipping the watch according to the invention with a tilt detector for the watch's control circuit to detect that it is in the inverted position.

Claims (6)

Pièce d'horlogerie électromécanique dotée d'un rouage (12) comprenant au moins une aiguille des heures (6) et une aiguille des minutes (8) pour l'affichage de l'heure courante du côté d'un cadran (2) de la pièce d'horlogerie, cette aiguille des heures (6) et cette aiguille des minutes (8) étant entraînées par un moteur électrique commun ou par des moteurs électriques distincts, la pièce d'horlogerie (1) étant en outre agencée pour fournir au moins une information additionnelle relative à une grandeur temporelle ou bien à une information non liée au temps, cette pièce d'horlogerie étant caractérisée en ce qu'elle comprend de plus une aiguille indicatrice additionnelle (38) agencée pour afficher l'information additionnelle, cette aiguille indicatrice additionnelle (38) étant montée du côté d'un fond (34) de la pièce d'horlogerie (1) sur un axe du rouage (12) de ladite pièce d'horlogerie, de sorte que l'aiguille indicatrice additionnelle (38) et l'aiguille des heures (6) et/ou l'aiguille des minutes (8) tournent en même temps et d'un même angle, l'aiguille des heures (6) et/ou l'aiguille des minutes (8) étant entraînées soit pour afficher l'heure courante, soit pour permettre à l'aiguille indicatrice additionnelle (38) d'afficher l'information additionnelle.An electromechanical timepiece with a gear train (12) comprising at least one hour hand (6) and a minute hand (8) for displaying the current time on the side of a dial (2) of the timepiece, this hour hand (6) and the minute hand (8) being driven by a common electric motor or by separate electric motors, the timepiece (1) being further arranged to provide the less additional information relating to a temporal magnitude or non-time-related information, this timepiece being characterized in that it further comprises an additional indicator needle (38) arranged to display the additional information, this an additional indicator needle (38) being mounted on the side of a base (34) of the timepiece (1) on an axis of the work train (12) of said timepiece, so that the additional indicator hand ( 38) and the needle s hours (6) and / or the 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 for display the current time, that is, to allow the additional indicator hand (38) to display the additional information. Pièce d'horlogerie selon la revendication 1, caractérisée en ce qu'elle comprend soit un moyen de commande additionnel par actionnement duquel l'utilisateur indique à la pièce d'horlogerie (1) qu'elle est retournée, soit un moyen agencé pour permettre à la pièce d'horlogerie (1) de détecter qu'elle a été retournée et d'entrer dans un mode d'affichage de l'information additionnelle.Timepiece according to claim 1, characterized in that it comprises either an additional control means by actuation of which the user indicates to the timepiece (1) that it is returned, or a means arranged to allow the timepiece (1) to detect that it has been returned and to enter a display mode of the additional information. Pièce d'horlogerie selon la revendication 2, caractérisée en ce qu'elle comprend des moyens agencés pour corriger l'indication de l'heure courante à intervalles de temps réguliers lorsque la pièce d'horlogerie (1) se trouve dans le mode d'affichage de l'information additionnelle.Timepiece according to claim 2, characterized in that it comprises means arranged to correct the indication of the current time at regular time intervals when the timepiece (1) is in the user display of additional information. Pièce d'horlogerie selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'elle comprend en outre un pignon des secondes (16) sur un axe (18) duquel l'aiguille indicatrice additionnelle (38) est montée rigidement.Timepiece according to any one of claims 1 to 3, characterized in that it further comprises a second gear (16) on an axis (18) of which the additional indicator needle (38) is rigidly mounted. Pièce d'horlogerie selon l'une quelconque des revendications 1 à 4, caractérisée en ce qu'elle comprend une cellule photovoltaïque (32) disposée du côté du fond (34) de la pièce d'horlogerie (1), cette cellule photovoltaïque (32) alimentant en courant électrique une batterie rechargeable (36), l'aiguille indicatrice additionnelle (38) étant agencée pour indiquer à l'utilisateur l'état de charge de la batterie rechargeable (36).Timepiece according to any one of claims 1 to 4, characterized in that it comprises a photovoltaic cell (32) arranged on the bottom side (34) of the timepiece (1), this photovoltaic cell ( 32) supplying a rechargeable battery (36) with electric power, the additional indicator needle (38) being arranged to indicate to the user the state of charge of the rechargeable battery (36). Pièce d'horlogerie selon la revendication 5, caractérisée en ce qu'elle comprend des moyens agencés pour la faire entrer dans son mode d'affichage d'une information additionnelle relative à l'état de charge de la batterie rechargeable (36) lorsque ces moyens détectent une augmentation du courant produit par la cellule photovoltaïque (32).Timepiece according to claim 5, characterized in that it comprises means arranged to enter in its display mode additional information relating to the state of charge of the rechargeable battery (36) when these means detect 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

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

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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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Also Published As

Publication number Publication date
CN103034110A (en) 2013-04-10
HK1184239A1 (en) 2014-01-17
JP5658722B2 (en) 2015-01-28
CN103034110B (en) 2015-09-09
EP2574995B1 (en) 2020-06-17
US20130077450A1 (en) 2013-03-28
US9019801B2 (en) 2015-04-28
JP2013072877A (en) 2013-04-22

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