EP2008159A2 - Timepiece comprising a dual time zone mechanism - Google Patents

Timepiece comprising a dual time zone mechanism

Info

Publication number
EP2008159A2
EP2008159A2 EP07727745A EP07727745A EP2008159A2 EP 2008159 A2 EP2008159 A2 EP 2008159A2 EP 07727745 A EP07727745 A EP 07727745A EP 07727745 A EP07727745 A EP 07727745A EP 2008159 A2 EP2008159 A2 EP 2008159A2
Authority
EP
European Patent Office
Prior art keywords
time
wheel
lever
heart
timepiece according
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
EP07727745A
Other languages
German (de)
French (fr)
Other versions
EP2008159B1 (en
Inventor
Marco Rochat
Simon Guenin
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.)
Frederic Piguet SA
Original Assignee
Frederic Piguet 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 Frederic Piguet SA filed Critical Frederic Piguet SA
Priority to EP07727745A priority Critical patent/EP2008159B1/en
Publication of EP2008159A2 publication Critical patent/EP2008159A2/en
Application granted granted Critical
Publication of EP2008159B1 publication Critical patent/EP2008159B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • G04B13/00—Gearwork
    • G04B13/007—Gearwork with differential work
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/001—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power
    • G04B11/003—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power with friction member, e.g. with spring action
    • 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
    • G04B19/22—Arrangements for indicating different local apparent times; Universal time pieces
    • G04B19/221—Arrangements for indicating different local apparent times; Universal time pieces mechanisms for correcting the hours hand only, i.e. independently for minutes and seconds hands

Definitions

  • the present invention relates to a timepiece comprising a mechanism with two time zones.
  • the time of one of the timezones is provided by means of a smaller size device which is difficult to read.
  • a first object of the present invention is to overcome this disadvantage as well as others by proposing to simplify the display in a timepiece dual time zone and selectively indicate the time of one either of the two time zones by the same display.
  • Timepieces have already been proposed in which the same display could selectively indicate two different pieces of information.
  • Patent document CH 693'155 describes a watch display mechanism provided to be switched so as to display with the same needle at least a first and a second information different from the first. From the brief indications given by this document, it is understood that a heart integral with the planet wheel of a planet gear is provided for analogically storing the difference between the value of the first and the value of the second piece of information, while the first information (eg time) is displayed.
  • a first input of the planetary gear is kinematically connected to the needle, while the second input is driven to represent the value of the second information.
  • the angular position of the planet wheel, or differential output wheel in principle reflects the difference between the value taken by the second information and that indicated by the needle.
  • the display mechanism is switched to the second information, the kinematic link between the first information and the needle is disengaged.
  • a hammer is lowered against the heart, to rotate the heart and bring him and the planet wheel, in angular position "zero".
  • the needle is kinematically connected to the planet gear, it is driven by it and moves to indicate the value taken by the second piece of information.
  • the planet wheel is immobilized by the hammer.
  • the movements of the second differential input wheel are therefore transmitted to the needle whose position evolves according to the value taken by the second piece of information.
  • the kinematic link disengageable between the first information and the needle is constituted by a second core cooperating with a second hammer.
  • the present invention therefore also aims to provide a timepiece comprising a mechanism capable of selectively indicating the time of one or the other of the two time zones by the same display, and which makes better use of the specificities of jet lag.
  • the present invention relates to a timepiece such as a wristwatch which is in accordance with claim 1.
  • a timepiece capable of indicating two time zones at the time. means of a single hour hand, this hand indicating the choice of the time of a first or second time zone, and passing successively from the indication of one of these hours to the other by the action of the wearer.
  • FIG. 1 is a front view of the dial of the watch according to the invention in local time display mode
  • FIG. 2 is a front view of the dial of the watch according to the invention in the display mode of the reference time;
  • FIG. 3 is a side view of the switching mechanism between the local time and the reference time;
  • FIG. 4 is a perspective view from above of the mechanism of FIG. 3;
  • FIG. 5 is a perspective view from above of the portion of the push mechanism that controls the display of the reference time;
  • FIG. 6 is a perspective view from above of the portion of the push mechanism that controls the display of the local time;
  • - Figure 7 is a perspective view from above which would be identical to that of Figure 6, if some wheels had been omitted to leave even elements that are masked in Figure 6;
  • FIG. 8 is a perspective view from above of the mechanism making it possible to modify the time difference between the local time and the reference time;
  • - Figure 9 is a perspective view from above which would be identical to that of Figure 8, if some parts omitted in Figure 8, had not been added;
  • FIG. 10 is a perspective view from above of the differential gear provided for driving the hour hand and the date;
  • FIG. 1 1 is a perspective view from above of the gear of Figure 10, some wheels have been omitted to show elements that are masked in Figure 10;
  • Figure 12 is a plan view of an asymmetrical heart that may be used in a variation of the present invention.
  • L local time, or time zone
  • H reference time
  • FIG. 1 illustrates the display of the local time "Lā€ by the display means of the timepiece of the present example.
  • Figure 2 illustrates the display of a reference time "H" by the same display means.
  • These display means comprise a main dial (referred to as ā‡ ) above which a H hour hand and a minute hand are conventionally rotated.
  • a date hand D rotates over a second smaller dial which is subdivided into 31 divisions to indicate the date.
  • a third dial associated with a hand j / n making a turn in 24 hours is still planned to give an indication of the day or the night.
  • a two-position needle (L and H) is used to indicate which of the local time or the reference time corresponds to the time displayed.
  • the selection hand indicates the letter "L" indicating that the time displayed is the local time. So it's 7:08 in Los Angeles.
  • the day / night hand d / n points to the beginning of the night. We can conclude that it is in fact 19h08.
  • An additional needle D also linked to the hour hand IH indicates the date of 31.
  • the hour hand H pivots in the clockwise direction and is placed on the fourth index 14 of the dial ā‡ (FIG. 2).
  • the hour hand H drives the 9-hour day / night hand J / Q on the 24-hour dial.
  • the day / night hand j / n will therefore be positioned on the indication of the end of the night of the dial. It is therefore easy to deduce that it is 4 am in Geneva.
  • the date hand D also driven by the hour hand H will advance to the date corresponding to "1" since the hour hand H will have passed midnight. To return to the local time, it is sufficient to exert a new pressure on the pushbutton P_.
  • FIGS. 3 and 4 show a particular embodiment of the mechanism that allows selection between two time zones in a timepiece according to the present invention.
  • This mechanism comprises a core 18 which is designed to cooperate with one or the other of two levers 20 and 25.
  • the core 18 is carried by an axis 17 (FIG. 3) which still carries a wheel 16 visible in FIG. 10 and hereinafter called the selector output wheel.
  • the selector output wheel 16 is provided to drive the hour hand through a differential gear which will be described later in connection with FIGS. 10 and 11.
  • the different gear ratios are chosen so that a half turn of the core 18, and therefore of the output wheel 16, corresponds to two turns (24 hours) performed by the hour hand.
  • FIG. 5 makes it possible to understand in more detail the operation of one of the two levers provided for cooperating with the heart 18.
  • the lever 20 is designed to pivot about an axis 23 whose one end is engaged in an opening in the board of a fixed wheel 19 (Figure 3).
  • Figure 3 shows that lever 20 comprises a hammer arm (referenced 20 ") and a spout (referenced 20 '). 22.
  • Figure 5 also shows that a spring 21 is provided to bias the lever 20 against the internal toothing 22 'of the ring 22.
  • This ring is rotatably mounted on the cylindrical shoulder (not shown) of an annular flange 28 (visible in FIG.
  • the ring 22 According to its angular position, the ring 22 presents alternately a tooth 22 'or a vacuum in the nose 20' of the lever 20.
  • the nose 20 ' When the nose 20 'is facing one of the inner teeth, it pushes the lever, and thus lowers the hammer 20 ". The latter thus presses against the heart 18.
  • the lever 25 is mounted to pivot about an axis whose one end is engaged in an opening of the plate of a wheel 24 ( Figure 3).
  • the spout 25 'of the lever 25 encounters a tooth 27' of the selection ring 27, the hammer 25 "is forced against the heart 18, which has the effect of rotating the heart to take it to occupy a predetermined rest position relative to the hammer 25 ".
  • the spring 26 can recall the lever 25 so as to lift the hammer 25 "and to release the heart 18.
  • the positions of the two Selection rings 22 and 27 relative to the levers 20 and 25 are determined so that when the hammer 20 "is lowered, the hammer 25" is lifted, and vice versa, the control of the selection crowns 22 and 27 therefore constitutes what a two-step mechanism is called.
  • the pivot 23 of the lever 20 is fixed, while the pivot of the lever 25 is integral with the plate of a moving wheel 24 (shown in FIG. 3) which is rotatably mounted on the axis 17. It will thus be understood that by turning the wheel 24, the angular offset between the lever 20 and the lever 25 can be varied.
  • the heart 18 can be brought into one or the other of two angular positions, depending on whether it is the lever 20 or the lever 25 'which is active.
  • the heart 18 is provided to drive the rotating hour hand.
  • the display is controlled to indicate either the time of a first time zone or that of another time zone. schedule.
  • reference time the time indicated by the needles when the lever 20 is active
  • local time the time indicated by the needles when the lever 25 is active.
  • FIG. 5 shows, in particular, a pusher 29, a column wheel (formed by the assembly of the coaxial elements 30, 32 and 35), and a jumper 31.
  • the column wheel comprises a star 30 designed to cooperate with the pusher 29.
  • the star 30 has twelve teeth, the column wheel rotates 30 Ā° (ie a twelfth of a turn) each time the pusher 29 is actuated.
  • the column wheel also carries a toothed wheel 32 which is designed to drive the selection ring 22 via a gear wheel 33.
  • the selection crown 22 advances in steps of 1/24 th of a turn.
  • the internal toothing of the ring 22 has twelve teeth 22 'separated by as many voids.
  • the ring 22 successively has a tooth, then a vacuum at the nose 20 'of the lever 20.
  • the lever 20 therefore pushes the heart 18 in every other step.
  • Figure 5 still shows a spring 34, which is provided to return the pusher 29 to its initial position when the user releases it.
  • Figure 5 also shows a probe 36 which is biased by a spring 37 against the columns 35 of the column wheel.
  • the probe 36 is mounted to pivot about an axis that is intended to carry the selection needle s ( Figures 1 and 2). The latter therefore indicates the display mode of the watch, based on the angular position of the column wheel.
  • the function of the pusher 29 is not limited to advancing the selection ring 22. Indeed, as already said, when the lever 20 is actuated, the lever 25 must be released, and vice versa. Thus, when the selection crown 22 advances one step, the selection crown 27 must also advance one step.
  • Figures 6 and 7 describe the drive mechanism of the selection ring 27.
  • the drive of the selection ring 27 by the pusher 29 is through a differential control dif2, so as to preserve the possibility of move the ring 27 independently of the pusher 29 to change the time difference.
  • the control differential comprises the wheels 46 and 42, the reference 47, the pinion 43 and the satellite mobile 44.
  • the pinion 43 ( Figure 7), which is driven on the column wheel, is the first input of the differential.
  • the wheel formed by the wheel 42 driven on the return 47 is a second differential input, coaxial with the first, which is left free in rotation.
  • the satellite mobile 44 comprises a wheel and a pinion which mesh respectively with the pinion 43 and the reference 47.
  • the satellite mobile 44 is rotatably mounted around a pin 45 driven into the wheel 46 of the board.
  • the wheel 46 constitutes the differential output.
  • the control mechanism associated with the pusher 29 includes an isolator flip-flop 40 provided to block the second differential input 42 when the pusher 29 is actuated. It can be seen in FIG. 6 that the isolator rocker 40 is controlled by a cam 39 integral with a control finger 38. It can also be seen that the control finger 38 is itself actuated by the pusher 29 via a pin 29 'driven on the pusher 29. When pressing the pusher 29, the cam 39 pivots and releases the isolator rocker 40 which, constrained by a spring 41, falls and blocks the differential input wheel 42. Continuing its travel, the pusher 29 advances by one step the star 30 (visible in FIG. 5), and thus also the differential input gear 43, thereby rotating the satellite mobile 44.
  • both selection rings 22 and 27 can rotate synchronously in steps of 1/24 th lap, under the action of the plunger 29. once the pressure on the pusher 29 released, the latter resumes its place under the effect of the spring 34, and the pin 29 'returns the control finger 38.
  • the cam 39 separates the isolator rocker 40 from the teeth of the wheel 42, releasing the latter.
  • FIGS. 8 and 9 describe the mechanism provided for modifying the angular position of the lever 25 relative to the lever 20. This mechanism makes it possible to adjust the time difference between the reference time and the local time.
  • the mechanism for adjusting the time difference comprises a lower flange 50 secured to the board (not shown) and which carries a star fixed to twelve teeth 49, and a shaft 48.
  • a movable annular spring 53 is provided to cooperate with the Star 49.
  • a wheel 51 and an upper flange 52 (FIG. 9) are rotatably mounted on the shaft 48.
  • the wheel 51 meshes with the wheel 24, and it is integral with the upper flange 52 and the annular spring 53. bringing the winding stem (not shown) into the second pulled position T2, the wheel 51, and thus the upper flange 52 and the annular spring 53 can be rotated.
  • the annular spring 53 being positioned by the star 49, the wheel 51 moves, under the action of the winding stem, in steps of 1/12 th of a turn. Since the gear ratio between the wheel 51 and the wheel 24 is 1/4, the wheel 24 moves in steps of 1/48 th of a revolution.
  • the wheel 24 drives the lever 25, the return spring 26 and the selection ring 27.
  • the lever 25 is constrained against the heart 18, the wheel 24 also drives the heart itself into its seat. rotation.
  • the heart 18, when rotating causes the rotation of the hour wheel 8 via the selector output wheel 16.
  • FIGs 10 and 1 1 describe the training of the display of the hour hands JH.
  • the hour hand can be driven at the same time by the selector output wheel 16 and the movement of the watch. This is why, in the present example, the driving of the hour hand is through a differential gear (referenced dif1 in Figure 1 1).
  • This differential gear comprises a first differential input mobile formed of a wheel 3 integral with a pinion 4 via the axis of the differential 3 ', and a second differential input wheel formed by a wheel 15 'and its pinion 6 which are rotatably mounted on the axis 3'.
  • the gear also comprises a differential output wheel 7 which is rotatably mounted on the axis 3 ', and a satellite mobile 5 rotatably mounted around a pin g.
  • the satellite mobile is composed of a wheel 5 'which meshes with the pinion 6 and a pinion 5' meshing with the pinion 4.
  • an additional hour wheel 2 is driven on the hour wheel 1 of the movement.
  • This wheel 2 meshes with the first input wheel 3 of the differential gear.
  • the selector output wheel 16 meshes with the second input wheel 15 '.
  • the input wheel 3 is integral with the differential gear 4
  • the movement of the watch causes the moving satellite 5 to rotate through the pinion 4.
  • the pinion 6 is integral with the wheel 15 ', it is usually blocked by the selector output wheel 16.
  • it is the differential output wheel 7 which is rotated by the satellite mobile 5.
  • the differential output wheel meshes with the wheel itself. with barrel 8, thus driving the hour hand JH.
  • the different gear ratios are chosen so that two turns of the 8-wheel wheel correspond to one revolution of the differential output wheel 7.
  • the wheel 7 thus performs one revolution per twenty-four hours.
  • the embodiment which is the subject of this example also comprises a needle D provided for displaying the date.
  • the needle D is integral in rotation with a date star 12 having 31 teeth.
  • the date star 12 is held in the position corresponding to a date given by a calendar jumper 13, itself constrained by a calendar jumper spring 14.
  • the differential output wheel 7 accomplishes a revolution in twenty-four hours.
  • Fig. 10 still shows a day / night display wheel 10. This wheel is driven by the barrel wheel 8 via a return 9.
  • the day / night display wheel 10 accomplishes a turn in 24 hours. and its axis carries the day / night needle J / Q.
  • the control of the wheel 24 should also be adapted so that the wheel 24 moves in steps of 1/24 th of a lap rather than in steps of 1/48 th of a turn.
  • This effect can be obtained for example by reducing the gear ratio between the wheel 51 and the wheel 24 to ā‡ A.
  • the time difference is within an asymmetric interval extending from -1 h. at + 12h. or from - 12h to + 1 1 h.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

The invention concerns a timepiece such as a wristwatch comprising a dual time zone mechanism for indicating a reference time corresponding to the time of a location where the user of the watch normally lives and a local time corresponding to the time of a location where the user is temporarily residing. The invention is characterized in that it comprises a core (18) associated with two levers (20, 25) controlled by a common push-button (P; 29), the time shift between the local time and the time zone being adjustable by moving at least one of the levers about the core, the time shift between said local time and said reference time being determined by the position of one lever (25) relative to the other (20).

Description

PIECE D'HORLOGERIE COMPRENANT UN MECANISME A DEUX FUSEAUX HORAIRESĀ WATCHPIECE COMPRISING A MECHANISM WITH TWO TIME ZONES
La prĆ©sente invention concerne une piĆØce d'horlogerie comprenant un mĆ©canisme Ć  deux fuseaux horaires.The present invention relates to a timepiece comprising a mechanism with two time zones.
Dans la plupart des montres-bracelets Ơ double fuseau horaire, l'indication de l'heure de l'un des fuseaux horaires est fournie au moyen d'un dispositif de plus petites dimensions dont la lecture est malaisƩe.In most dual-time wristwatches, the time of one of the timezones is provided by means of a smaller size device which is difficult to read.
Un premier but de la prĆ©sente invention est de remĆ©dier Ć  cet inconvĆ©nient ainsi qu'Ć  d'autres encore en proposant de simplifier l'affichage dans une piĆØce d'horlogerie Ć  double fuseau horaire et en faisant indiquer sĆ©lectivement l'heure de l'un ou l'autre des deux fuseaux horaires par le mĆŖme affichage. On a dĆ©jĆ  proposĆ© des piĆØces d'horlogerie dans lesquelles le mĆŖme affichage pourrait indiquer sĆ©lectivement deux informations diffĆ©rentes. Le document de brevet CH 693'155, notamment, dĆ©crit un mĆ©canisme d'affichage pour montre prĆ©vu pour ĆŖtre commutĆ© de maniĆØre Ć  pouvoir afficher avec la mĆŖme aiguille au moins une premiĆØre et une deuxiĆØme information diffĆ©rente de la premiĆØre. ƀ partir des indications succinctes donnĆ©es par ce document, on comprend qu'un cœur solidaire de la roue porte satellite d'un engrenage planĆ©taire est prĆ©vu pour mĆ©moriser analogiquement la diffĆ©rence entre la valeur de la premiĆØre et la valeur de la deuxiĆØme information, pendant que la premiĆØre information (par exemple l'heure) est affichĆ©e. ƀ cette fin, une premiĆØre entrĆ©e de l'engrenage planĆ©taire est reliĆ©e cinĆ©matiquement Ć  l'aiguille, alors que la deuxiĆØme entrĆ©e est entraĆ®nĆ©e de maniĆØre Ć  reprĆ©senter la valeur de la deuxiĆØme information. Dans ces conditions, la position angulaire de la roue porte-satellite, ou roue de sortie de diffĆ©rentiel, reflĆØte en principe l'Ć©cart existant entre la valeur prise par la deuxiĆØme information et celle indiquĆ©e par l'aiguille. Lorsque le mĆ©canisme d'affichage est commutĆ© sur la deuxiĆØme information, le lien cinĆ©matique entre la premiĆØre information et l'aiguille est dĆ©brayĆ©. SimultanĆ©ment un marteau est abaissĆ© contre le cœur, pour faire tourner le cœur et l'amener, lui et la roue porte-satellite, en position angulaire Ā« zĆ©ro Ā». Comme l'aiguille est reliĆ©e cinĆ©matiquement Ć  l'engrenage planĆ©taire, elle est entraĆ®nĆ©e par celui-ci et se dĆ©place pour indiquer la valeur prise par la deuxiĆØme information. Ensuite, tant que le mĆ©canisme d'affichage indique la deuxiĆØme information, la roue porte-satellite est immobilisĆ©e par le marteau. Les dĆ©placements de la deuxiĆØme roue d'entrĆ©e de diffĆ©rentiel sont donc transmis Ć  l'aiguille dont la position Ć©volue en fonction de la valeur prise par la deuxiĆØme information. D'autre part, le lien cinĆ©matique dĆ©brayable entre la premiĆØre information et l'aiguille est constituĆ© par un deuxiĆØme cœur coopĆ©rant avec un deuxiĆØme marteau. Un avantage liĆ© au principe de fonctionnement exposĆ© dans ce document antĆ©rieur est que les deux informations diffĆ©rentes Ć  afficher n'ont pas besoin d'Ć©voluer au mĆŖme rythme. L'Ć©cart entre les valeurs des deux informations peut varier sans contraintes.A first object of the present invention is to overcome this disadvantage as well as others by proposing to simplify the display in a timepiece dual time zone and selectively indicate the time of one either of the two time zones by the same display. Timepieces have already been proposed in which the same display could selectively indicate two different pieces of information. Patent document CH 693'155, in particular, describes a watch display mechanism provided to be switched so as to display with the same needle at least a first and a second information different from the first. From the brief indications given by this document, it is understood that a heart integral with the planet wheel of a planet gear is provided for analogically storing the difference between the value of the first and the value of the second piece of information, while the first information (eg time) is displayed. For this purpose, a first input of the planetary gear is kinematically connected to the needle, while the second input is driven to represent the value of the second information. Under these conditions, the angular position of the planet wheel, or differential output wheel, in principle reflects the difference between the value taken by the second information and that indicated by the needle. When the display mechanism is switched to the second information, the kinematic link between the first information and the needle is disengaged. Simultaneously a hammer is lowered against the heart, to rotate the heart and bring him and the planet wheel, in angular position "zero". As the needle is kinematically connected to the planet gear, it is driven by it and moves to indicate the value taken by the second piece of information. Then, as long as the display mechanism indicates the second piece of information, the planet wheel is immobilized by the hammer. The movements of the second differential input wheel are therefore transmitted to the needle whose position evolves according to the value taken by the second piece of information. On the other hand, the kinematic link disengageable between the first information and the needle is constituted by a second core cooperating with a second hammer. An advantage related to the operating principle explained in this prior document is that the two different information to display do not need to evolve at the same rate. The difference between the values of the two pieces of information can vary without constraints.
Il semble qu'il serait possible d'adapter le mĆ©canisme d'affichage dĆ©crit dans ce document de maniĆØre Ć  indiquer l'heure de deux fuseaux horaires diffĆ©rents. Toutefois, le dĆ©calage horaire, ou autrement dit l'Ć©cart, entre deux fuseaux horaires, prĆ©sente la particularitĆ© avantageuse de ne pas changer au cours du temps. La dĆ©marche d'adapter le mĆ©canisme dĆ©crit ci-dessus Ć  l'affichage de deux fuseaux horaires conduirait donc Ć  une piĆØce d'horlogerie inutilement compliquĆ©e et coĆ»teuse Ć  rĆ©aliser.It seems that it would be possible to adapt the display mechanism described in this document to indicate the time of two different time zones. However, the time difference, or otherwise the difference, between two time zones, has the advantageous feature of not changing over time. The approach of adapting the mechanism described above to the display of two time zones would therefore lead to a timepiece that is unnecessarily complicated and expensive to produce.
La prĆ©sente invention a donc Ć©galement pour but de fournir une piĆØce d'horlogerie comprenant un mĆ©canisme capable de faire indiquer sĆ©lectivement l'heure de l'un ou l'autre des deux fuseaux horaires par le mĆŖme affichage, et qui mette davantage Ć  profit les spĆ©cificitĆ©s du dĆ©calage horaire.The present invention therefore also aims to provide a timepiece comprising a mechanism capable of selectively indicating the time of one or the other of the two time zones by the same display, and which makes better use of the specificities of jet lag.
ƀ cet effet, la prĆ©sente invention concerne une piĆØce d'horlogerie telle qu'une montre-bracelet qui est conforme Ć  la revendication 1. GrĆ¢ce Ć  ces caractĆ©ristiques, la prĆ©sente invention fournit une piĆØce d'horlogerie capable d'indiquer deux fuseaux horaires au moyen d'une aiguille des heures unique, cette aiguille indiquant au choix l'heure d'un premier ou d'un deuxiĆØme fuseau horaire, et passant successivement de l'indication de l'une de ces heures Ć  l'autre par l'action du porteur. D'autres caractĆ©ristiques et avantages de la prĆ©sente invention apparaĆ®tront Ć  la lecture de la description dĆ©taillĆ©e qui va suivre d'un mode de rĆ©alisation de l'invention, donnĆ©e uniquement Ć  titre d'exemple non limitatif, et faite en rĆ©fĆ©rence aux dessins annexĆ©s dans lesquels :For this purpose, the present invention relates to a timepiece such as a wristwatch which is in accordance with claim 1. By virtue of these features, the present invention provides a timepiece capable of indicating two time zones at the time. means of a single hour hand, this hand indicating the choice of the time of a first or second time zone, and passing successively from the indication of one of these hours to the other by the action of the wearer. Other features and advantages of the present invention will appear on reading the following detailed description of an embodiment of the invention, given solely by way of non-limiting example, and with reference to the accompanying drawings in FIG. which :
- la figure 1 est une vue de face du cadran de la montre selon l'invention en mode d'affichage de l'heure locale ;- Figure 1 is a front view of the dial of the watch according to the invention in local time display mode;
- la figure 2 est une vue de face du cadran de la montre selon l'invention en mode d'affichage de l'heure de rƩfƩrence ;- Figure 2 is a front view of the dial of the watch according to the invention in the display mode of the reference time;
- la figure 3 est une vue de cƓtƩ du mƩcanisme de commutation entre l'heure locale et l'heure de rƩfƩrence ; - la figure 4 est une vue en perspective de dessus du mƩcanisme de la figure 3 ; - la figure 5 est une vue en perspective de dessus de la partie du mƩcanisme Ơ poussoir qui commande l'affichage de l'heure de rƩfƩrence ;FIG. 3 is a side view of the switching mechanism between the local time and the reference time; FIG. 4 is a perspective view from above of the mechanism of FIG. 3; FIG. 5 is a perspective view from above of the portion of the push mechanism that controls the display of the reference time;
- la figure 6 est une vue en perspective de dessus de la partie du mƩcanisme Ơ poussoir qui commande l'affichage de l'heure locale ; - la figure 7 est une vue en perspective de dessus qui serait identique Ơ celle de la figure 6, si certaines roues n'avaient ƩtƩ omises pour laisser voire des ƩlƩments qui sont masquƩs sur la figure 6 ;FIG. 6 is a perspective view from above of the portion of the push mechanism that controls the display of the local time; - Figure 7 is a perspective view from above which would be identical to that of Figure 6, if some wheels had been omitted to leave even elements that are masked in Figure 6;
- la figure 8 est une vue en perspective de dessus du mĆ©canisme permettant de modifier le dĆ©calage horaire entre l'heure locale et l'heure de rĆ©fĆ©rence ; - la figure 9 est une vue en perspective de dessus qui serait identique Ć  celle de la figure 8, si certaines piĆØces omises sur la figure 8, n'avaient pas Ć©tĆ© rajoutĆ©es ;FIG. 8 is a perspective view from above of the mechanism making it possible to modify the time difference between the local time and the reference time; - Figure 9 is a perspective view from above which would be identical to that of Figure 8, if some parts omitted in Figure 8, had not been added;
- la figure 10 est une vue en perspective de dessus de l'engrenage diffĆ©rentiel prĆ©vu pour entraĆ®ner l'aiguille des heures et le quantiĆØme ;- Figure 10 is a perspective view from above of the differential gear provided for driving the hour hand and the date;
- la figure 1 1 est une vue en perspective de dessus de l'engrenage de la figure 10, certaines roues ayant ƩtƩ omises pour laisser voir des ƩlƩments qui sont masquƩs sur la figure 10 ;- Figure 1 1 is a perspective view from above of the gear of Figure 10, some wheels have been omitted to show elements that are masked in Figure 10;
- la figure 12 est une vue en plan d'un cœur asymĆ©trique qui peut ĆŖtre utilisĆ© dans une variante de la prĆ©sente invention.Figure 12 is a plan view of an asymmetrical heart that may be used in a variation of the present invention.
Dans tout ce qui suit, on dĆ©signera par Ā« L Ā» et on appellera heure locale, ou heure de fuseau, l'heure d'un lieu oĆ¹ le porteur de la montre selon l'invention se trouve temporairement, et on dĆ©signera par Ā« H Ā», et on appellera heure de rĆ©fĆ©rence, l'heure du lieu oĆ¹ le porteur a son domicile habituel.In what follows, denote by "L" and will be called local time, or time zone, the time of a place where the wearer of the watch according to the invention is temporarily, and will be designated by "H" ", And will be called reference time, the time of the place where the wearer has his usual place of residence.
La figure 1 illustre l'affichage de l'heure locale Ā« L Ā» par les moyens d'affichage de la piĆØce d'horlogerie du prĆ©sent exemple. La figure 2 illustre l'affichage d'une heure de rĆ©fĆ©rence Ā« H Ā» par les mĆŖmes moyens d'affichage. Ces moyens d'affichage comprennent un cadran principal (rĆ©fĆ©rencĆ© Ƈ) au dessus duquel tourne de faƧon conventionnelle une aiguille des heures H et une aiguille des minutes. Une aiguille de quantiĆØme D tourne au dessus d'un deuxiĆØme cadran plus petit qui est subdivisĆ© en 31 divisions pour indiquer la date. Un troisiĆØme cadran associĆ© Ć  une aiguille j/n faisant un tour en 24 heures est encore prĆ©vu pour donner une indication du jour ou de la nuit. Finalement, une aiguille s Ć  deux positions (L et H) sert Ć  indiquer laquelle, de l'heure locale ou de l'heure de rĆ©fĆ©rence, correspond Ć  l'heure affichĆ©e.FIG. 1 illustrates the display of the local time "L" by the display means of the timepiece of the present example. Figure 2 illustrates the display of a reference time "H" by the same display means. These display means comprise a main dial (referred to as Ƈ) above which a H hour hand and a minute hand are conventionally rotated. A date hand D rotates over a second smaller dial which is subdivided into 31 divisions to indicate the date. A third dial associated with a hand j / n making a turn in 24 hours is still planned to give an indication of the day or the night. Finally, a two-position needle (L and H) is used to indicate which of the local time or the reference time corresponds to the time displayed.
Pour expliquer le fonctionnement des moyens d'affichage des figures 1 et 2, on peut considĆ©rer l'exemple d'une personne en dĆ©placement Ć  Los Angeles (Etats- Unis) et dĆ©sirant connaĆ®tre l'heure qu'il est Ć  GenĆØve, lieu de rĆ©sidence habituel de cette personne. - A -To explain the operation of the display means of Figures 1 and 2, we can consider the example of a person traveling to Los Angeles (United States) and wishing to know the time it is in Geneva, place of habitual residence of that person. - AT -
Sur la figure 1 l'aiguille de sĆ©lection s indique la lettre "L" indiquant que l'heure affichĆ©e est l'heure locale. Il est donc 7hO8 Ć  Los Angeles. L'aiguille jour/nuit j/n pointe sur le dĆ©but de la nuit. On peut conclure qu'il est en fait 19hO8. Une aiguille supplĆ©mentaire D Ć©galement liĆ©e Ć  l'aiguille des heures IH indique la date du 31. Lors de la sĆ©lection du second fuseau correspondant Ć  l'heure de rĆ©fĆ©rence, la personne presse sur le poussoir P_ disposĆ© Ć  8 heures sur la carrure de la montre. L'aiguille de sĆ©lection s pivote et se place sur la lettre "H" du cadran Ƈ. L'aiguille des heures H pivote et se dĆ©lace d'une valeur de 9 heures qui correspond Ć  l'Ć©cart entre les deux fuseaux horaires de Los Angeles et de GenĆØve. Le fuseau horaire correspondant Ć  GenĆØve Ć©tant en avance sur le fuseau horaire correspondant Ć  Los Angeles, l'aiguille des heures H pivote dans le sens des aiguilles de la montre et se place sur le quatriĆØme index 14 du cadran Ƈ (figure 2). Au cours de sa rotation, l'aiguille des heures H entraĆ®ne l'aiguille jour/nuit J/Q de 9 heures sur le cadran de 24 heures. L'aiguille jour/nuit j/n se positionnera donc sur l'indication de la fin de la nuit du cadran ƇJ_. Il est donc aisĆ© de dĆ©duire qu'il est 4 heures du matin Ć  GenĆØve. L'aiguille de la date D Ć©galement entraĆ®nĆ©e par l'aiguille des heures H avancera jusqu'Ć  la date correspondant au "1 " puisque l'aiguille des heures H aura passĆ© minuit. Pour revenir Ć  l'heure locale, il suffit d'exercer une nouvelle pression sur le poussoir P_. En toute gĆ©nĆ©ralitĆ©, pour une montre qui indique le quantiĆØme, le dĆ©calage d'un fuseau horaire par rapport Ć  un autre fuseau horaire est au maximum de Ā± 23 heures (exception faite des demi-fuseaux horaires). PrĆ©cisons toutefois que, dans le cas d'une montre qui n'indique pas le quantiĆØme, le dĆ©calage maximum peut ĆŖtre limitĆ© par exemple Ć  + 12h dans un sens et ā€” 1 1 h dans l'autre. La figure 3 et 4 reprĆ©sentent un mode de rĆ©alisation particulier du mĆ©canisme qui permet la sĆ©lection entre deux fuseaux horaires dans une piĆØce d'horlogerie selon la prĆ©sente invention. Ce mĆ©canisme comprend un cœur 18 qui est prĆ©vu pour coopĆ©rer avec l'un ou l'autre de deux leviers 20 et 25. Le cœur 18 est portĆ© par un axe 17 (figure 3) qui porte encore une roue 16 visible sur la figure 10 et appelĆ©e ci- aprĆØs la roue de sortie de sĆ©lecteur. ConformĆ©ment Ć  ce qui sera expliquĆ© plus loin, la roue de sortie de sĆ©lecteur 16 est prĆ©vue pour entraĆ®ner l'aiguille des heures par l'intermĆ©diaire d'un engrenage diffĆ©rentiel qui sera dĆ©crit plus tard en relation avec les figures 10 et 1 1. Dans le prĆ©sent exemple, les diffĆ©rents rapports d'engrenage sont choisis de maniĆØre Ć  ce qu'un demi tour du cœur 18, et donc de la roue de sortie 16, corresponde Ć  deux tours (24 heures) effectuĆ©s par l'aiguille des heures.In Fig. 1, the selection hand indicates the letter "L" indicating that the time displayed is the local time. So it's 7:08 in Los Angeles. The day / night hand d / n points to the beginning of the night. We can conclude that it is in fact 19h08. An additional needle D also linked to the hour hand IH indicates the date of 31. When selecting the second time zone corresponding to the reference time, the person presses on the pusher P_ arranged at 8 o'clock on the middle of the shows. The selection hand rotates and is placed on the letter "H" of the dial Ƈ. The hour hand H swivels and moves 9 hours, which corresponds to the difference between the two time zones of Los Angeles and Geneva. Since the time zone corresponding to Geneva is ahead of the time zone corresponding to Los Angeles, the hour hand H pivots in the clockwise direction and is placed on the fourth index 14 of the dial Ƈ (FIG. 2). During its rotation, the hour hand H drives the 9-hour day / night hand J / Q on the 24-hour dial. The day / night hand j / n will therefore be positioned on the indication of the end of the night of the dial. It is therefore easy to deduce that it is 4 am in Geneva. The date hand D also driven by the hour hand H will advance to the date corresponding to "1" since the hour hand H will have passed midnight. To return to the local time, it is sufficient to exert a new pressure on the pushbutton P_. In general, for a watch that indicates the date, the shift of a time zone relative to another time zone is at most Ā± 23 hours (except for half-time zones). Note however that, in the case of a watch that does not indicate the date, the maximum offset can be limited for example + 12h in one direction and -1 1h in the other. FIGS. 3 and 4 show a particular embodiment of the mechanism that allows selection between two time zones in a timepiece according to the present invention. This mechanism comprises a core 18 which is designed to cooperate with one or the other of two levers 20 and 25. The core 18 is carried by an axis 17 (FIG. 3) which still carries a wheel 16 visible in FIG. 10 and hereinafter called the selector output wheel. As will be explained below, the selector output wheel 16 is provided to drive the hour hand through a differential gear which will be described later in connection with FIGS. 10 and 11. In the present example, the different gear ratios are chosen so that a half turn of the core 18, and therefore of the output wheel 16, corresponds to two turns (24 hours) performed by the hour hand.
La figure 5 permet de comprendre plus en dĆ©tail le fonctionnement d'un des deux leviers prĆ©vus pour coopĆ©rer avec le cœur 18. Le levier 20 est prĆ©vu pour pivoter autour d'un axe 23 dont une extrĆ©mitĆ© est engagĆ©e dans une ouverture amĆ©nagĆ©e dans la planche d'une roue fixe 19 (figure 3). La vue de dessus permet de voir que levier 20 comporte un bras en forme de marteau (rĆ©fĆ©rencĆ© 20") ainsi qu'un bec (rĆ©fĆ©rencĆ© 20'). Le bec 20' est prĆ©vu pour coopĆ©rer avec la denture intĆ©rieure 22' d'une couronne 22. La figure 5 montre Ć©galement qu'un ressort 21 est prĆ©vu pour rappeler le levier 20 contre la denture intĆ©rieure 22' de la couronne 22. Cette couronne est montĆ©e rotative sur l'Ć©paulement cylindrique (non reprĆ©sentĆ©) d'une flasque annulaire 28 (visible sur la figure 3) qui remplit notamment la fonction d'anneau de centrage. La couronne 22 peut donc tourner autour, et coaxialement avec, le cœur 18 et l'axe 17. Selon sa position angulaire, la couronne 22 prĆ©sente alternativement une dent 22' ou un vide au bec 20' du levier 20. Lorsque le bec 20' est face Ć  l'une des dents intĆ©rieures, celle-ci repousse le levier, et fait donc s'abaisser le marteau 20". Ce dernier vient ainsi presser contre le cœur 18. De faƧon connue de l'homme du mĆ©tier, en raison du profil excentrĆ© du cœur 18, la pression du marteau 20" a pour effet de faire tourner le cœur autour de son axe, pour l'amener Ć  occuper une position de repos prĆ©dĆ©terminĆ©e relativement au marteau. Lorsque, en raison d'un dĆ©placement de la couronne de sĆ©lection 22, la dent 22' est remplacĆ©e par un vide, le bec 20' est libĆ©rĆ©. Le ressort de rappel 21 peut donc faire basculer le levier 20 de maniĆØre Ć  soulever le marteau et Ć  libĆ©rer le cœur. Le deuxiĆØme levier (visible sur la figure 4 et rĆ©fĆ©rencĆ© 25) du mĆ©canisme de sĆ©lection est prĆ©vu pour coopĆ©rer avec la denture intĆ©rieure d'une couronne 27 pour fonctionner de maniĆØre tout Ć  fait analogue Ć  celle levier 20. On peut voir sur les figures 3 et 4 que la flasque annulaire 28 occupe une position intercalaire entre la couronne 22 et la couronne 27. Cet arrangement permet Ć  la flasque 28 d'assurer le guidage en rotation des deux couronnes 22 et 27.FIG. 5 makes it possible to understand in more detail the operation of one of the two levers provided for cooperating with the heart 18. The lever 20 is designed to pivot about an axis 23 whose one end is engaged in an opening in the board of a fixed wheel 19 (Figure 3). The view from above shows that lever 20 comprises a hammer arm (referenced 20 ") and a spout (referenced 20 '). 22. Figure 5 also shows that a spring 21 is provided to bias the lever 20 against the internal toothing 22 'of the ring 22. This ring is rotatably mounted on the cylindrical shoulder (not shown) of an annular flange 28 (visible in FIG. 3), which in particular fulfills the function of a centering ring, so that the ring 22 can turn around and coaxially with the core 18 and the axis 17. According to its angular position, the ring 22 presents alternately a tooth 22 'or a vacuum in the nose 20' of the lever 20. When the nose 20 'is facing one of the inner teeth, it pushes the lever, and thus lowers the hammer 20 ". The latter thus presses against the heart 18. In a manner known to those skilled in the art, because of the eccentric profile of the heart 18, the pressure of the hammer 20 "has the effect of rotating the heart about its axis, for the bring about to occupy a predetermined rest position relative to the hammer When, due to a displacement of the selection ring 22, the tooth 22 'is replaced by a vacuum, the spout 20' is released. can therefore tilt the lever 20 so as to lift the hammer and release the heart.The second lever (visible in Figure 4 and referenced 25) of the selection mechanism is provided to cooperate with the internal toothing of a ring 27 for operate in a manner quite similar to that lever 20. It can be seen in Figures 3 and 4 that the annular flange 28 occupies an intermediate position between the ring 22 and the ring 27. This arrangement allows the flange 28 to ensure the guidance e n rotation of the two rings 22 and 27.
Le levier 25 est montĆ© pour pivoter autour d'un axe dont une extrĆ©mitĆ© est engagĆ©e dans une ouverture du plateau d'une roue 24 (figure 3). Comme prĆ©cĆ©demment, lorsque le bec 25' du levier 25 rencontre une dent 27' de la couronne de sĆ©lection 27, le marteau 25" est contraint contre le cœur 18, ce qui a pour effet de faire tourner le cœur pour l'amener Ć  occuper une position de repos prĆ©dĆ©terminĆ©e relativement au marteau 25". Lorsque la dent 27' est remplacĆ©e par un vide, le ressort 26 peut rappeler le levier 25 de maniĆØre Ć  soulever le marteau 25" et Ć  libĆ©rer le cœur 18. PrĆ©cisons que, conformĆ©ment Ć  ce qui sera expliquĆ© plus loin, les positions des deux couronnes de sĆ©lections 22 et 27 relativement aux leviers 20 et 25 sont dĆ©terminĆ©es de maniĆØre Ć  ce que lorsque le marteau 20" est abaissĆ©, le marteau 25" est soulevĆ©, et inversement. La commande des couronnes de sĆ©lection 22 et 27 constitue donc ce qu'on appelle un mĆ©canisme Ć  deux temps. Comme on l'a dĆ©jĆ  mentionnĆ©, dans le prĆ©sent mode de rĆ©alisation, le pivot 23 du levier 20 est fixe, alors que le pivot du levier 25 est solidaire du plateau d'une roue mobile 24 (reprĆ©sentĆ©e dans la figure 3) qui est montĆ©e rotative sur l'axe 17. On comprendra donc, qu'en faisant tourner la roue 24, on peut faire varier le dĆ©calage angulaire entre le levier 20 et le levier 25. Ainsi, lorsque les deux leviers occupent des positions dĆ©calĆ©es, le cœur 18 peut ĆŖtre amenĆ© dans l'une ou l'autre de deux positions angulaires, selon que c'est le levier 20 ou le levier 25' qui est actif.The lever 25 is mounted to pivot about an axis whose one end is engaged in an opening of the plate of a wheel 24 (Figure 3). As previously, when the spout 25 'of the lever 25 encounters a tooth 27' of the selection ring 27, the hammer 25 "is forced against the heart 18, which has the effect of rotating the heart to take it to occupy a predetermined rest position relative to the hammer 25 ". When the tooth 27 'is replaced by a vacuum, the spring 26 can recall the lever 25 so as to lift the hammer 25 "and to release the heart 18. Let us specify that, in accordance with what will be explained later, the positions of the two Selection rings 22 and 27 relative to the levers 20 and 25 are determined so that when the hammer 20 "is lowered, the hammer 25" is lifted, and vice versa, the control of the selection crowns 22 and 27 therefore constitutes what a two-step mechanism is called. As already mentioned, in the present embodiment, the pivot 23 of the lever 20 is fixed, while the pivot of the lever 25 is integral with the plate of a moving wheel 24 (shown in FIG. 3) which is rotatably mounted on the axis 17. It will thus be understood that by turning the wheel 24, the angular offset between the lever 20 and the lever 25 can be varied. Thus, when the two levers occupy offset positions, the heart 18 can be brought into one or the other of two angular positions, depending on whether it is the lever 20 or the lever 25 'which is active.
Comme on l'a vu, le cœur 18 est prĆ©vu pour entraĆ®ner l'aiguille des heures en rotation. Ainsi, comme visible Ć  la figure 4, en contraignant, soit le levier 20, soit le levier 25 contre le cœur, on commande l'affichage pour indiquer soit l'heure d'un premier fuseau horaire, soit celle d'un autre fuseau horaire. Dans la suite de cette description on appellera Ā« heure de rĆ©fĆ©rence Ā» l'heure indiquĆ©e par les aiguilles lorsque le levier 20 est actif, et on appellera Ā« heure locale Ā» l'heure indiquĆ©e par les aiguilles lorsque le levier 25 est actif. On comprendra Ć©galement de ce qui prĆ©cĆØde que, conformĆ©ment Ć  l'invention, les heures des deux fuseaux ne sont pas gĆ©rĆ©es comme deux heures indĆ©pendantes, mais bien en fonction du dĆ©calage que prĆ©sente l'heure locale par rapport Ć  l'heure de rĆ©fĆ©rence.As has been seen, the heart 18 is provided to drive the rotating hour hand. Thus, as can be seen in FIG. 4, by constraining either the lever 20 or the lever 25 against the heart, the display is controlled to indicate either the time of a first time zone or that of another time zone. schedule. In the following description will be called "reference time" the time indicated by the needles when the lever 20 is active, and will be called "local time" the time indicated by the needles when the lever 25 is active. It will also be understood from the foregoing that, in accordance with the invention, the times of the two time zones are not managed as two independent hours, but according to the time difference of the local time with respect to the reference time.
Les figures 5 Ć  9 illustrent la commande du mĆ©canisme de sĆ©lection qui vient d'ĆŖtre dĆ©crit. On voit notamment sur la figure 5 un poussoir 29, une roue Ć  colonne (formĆ©e par l'assemblage des Ć©lĆ©ments coaxiaux 30, 32 et 35), ainsi qu'un sautoir 31. La roue Ć  colonne comporte une Ć©toile 30 prĆ©vue pour coopĆ©rer avec le poussoir 29. En actionnant le poussoir 29, on fait avancer d'un pas l'Ć©toile 30 qui est maintenue par le sautoir 31. Comme l'Ć©toile 30 compte douze dents, la roue Ć  colonne effectue une rotation de 30Ā° (soit un douziĆØme de tour) chaque fois que le poussoir 29 est actionnĆ©. On voit sur la figure 5 que la roue Ć  colonne porte Ć©galement une roue dentĆ©e 32 qui est prĆ©vue pour entraĆ®ner la couronne de sĆ©lection 22 par l'intermĆ©diaire d'un renvoi 33. Le rapport d'engrenage entre la roue dentĆ©e 32 et la couronne de sĆ©lection 22 et de 1/2. Ainsi, la couronne de sĆ©lection 22 avance par pas d'un 1/24eme de tour. La denture intĆ©rieure de la couronne 22 comptant douze dents 22' sĆ©parĆ©es par autant de vides. La couronne 22 prĆ©sente successivement une dent, puis un vide au bec 20' du levier 20. Le levier 20 pousse donc le cœur 18 lors d'un pas sur deux. La figure 5 montre encore un ressort 34, qui est prĆ©vu pour rappeler le poussoir 29 dans sa position initiale lorsque l'utilisateur le relĆ¢che. La figure 5 montre encore un palpeur 36 qui est rappelĆ© par un ressort 37 contre les colonnes 35 de la roue Ć  colonne. Le palpeur 36 est montĆ© pour pivoter autour d'un axe qui est prĆ©vu pour porter l'aiguille de sĆ©lection s (figures 1 et 2). Cette derniĆØre indique donc le mode d'affichage de la montre, sur la base de la position angulaire de la roue Ć  colonne.Figures 5 to 9 illustrate the control of the selection mechanism which has just been described. FIG. 5 shows, in particular, a pusher 29, a column wheel (formed by the assembly of the coaxial elements 30, 32 and 35), and a jumper 31. The column wheel comprises a star 30 designed to cooperate with the pusher 29. By actuating the pusher 29, the star 30, which is maintained by the jumper 31, is advanced by one step. As the star 30 has twelve teeth, the column wheel rotates 30 Ā° (ie a twelfth of a turn) each time the pusher 29 is actuated. It can be seen in FIG. 5 that the column wheel also carries a toothed wheel 32 which is designed to drive the selection ring 22 via a gear wheel 33. The gear ratio between the gear wheel 32 and the gear wheel selection 22 and 1/2. Thus, the selection crown 22 advances in steps of 1/24 th of a turn. The internal toothing of the ring 22 has twelve teeth 22 'separated by as many voids. The ring 22 successively has a tooth, then a vacuum at the nose 20 'of the lever 20. The lever 20 therefore pushes the heart 18 in every other step. Figure 5 still shows a spring 34, which is provided to return the pusher 29 to its initial position when the user releases it. Figure 5 also shows a probe 36 which is biased by a spring 37 against the columns 35 of the column wheel. The probe 36 is mounted to pivot about an axis that is intended to carry the selection needle s (Figures 1 and 2). The latter therefore indicates the display mode of the watch, based on the angular position of the column wheel.
La fonction du poussoir 29 ne se limite pas Ć  faire avancer la couronne de sĆ©lection 22. En effet, comme on l'a dĆ©jĆ  dit, lorsque le levier 20 est actionnĆ©, le levier 25 doit ĆŖtre relĆ¢chĆ©, et inversement. Ainsi, lorsque la couronne de sĆ©lection 22 avance d'un pas, la couronne de sĆ©lection 27 doit Ć©galement avancer d'un pas. Les figures 6 et 7 dĆ©crivent le mĆ©canisme d'entraĆ®nement de la couronne de sĆ©lection 27. L'entraĆ®nement de la couronne de sĆ©lection 27 par le poussoir 29 se fait au travers d'un diffĆ©rentiel de commande dif2, de faƧon Ć  prĆ©server la possibilitĆ© de dĆ©placer la couronne 27 indĆ©pendamment du poussoir 29 pour modifier le dĆ©calage horaire. Le diffĆ©rentiel de commande comprend les roues 46 et 42, le renvoi 47, le pignon 43 ainsi que le mobile de satellite 44. Le pignon 43 (figure 7), qui chassĆ© sur la roue Ć  colonnes, constitue la premiĆØre entrĆ©e du diffĆ©rentiel. Le mobile constituĆ© par la roue 42 chassĆ©e sur le renvoi 47 constitue une deuxiĆØme entrĆ©e de diffĆ©rentiel, coaxiale Ć  la premiĆØre, qui est laissĆ©e libre en rotation. Le mobile de satellite 44 comprend une roue et un pignon qui engrĆØnent respectivement avec le pignon 43 et le renvoi 47. Le mobile de satellite 44 est montĆ© rotatif autour d'une goupille 45 chassĆ©e dans la planche de la roue 46. La roue 46 constitue la sortie de diffĆ©rentiel.The function of the pusher 29 is not limited to advancing the selection ring 22. Indeed, as already said, when the lever 20 is actuated, the lever 25 must be released, and vice versa. Thus, when the selection crown 22 advances one step, the selection crown 27 must also advance one step. Figures 6 and 7 describe the drive mechanism of the selection ring 27. The drive of the selection ring 27 by the pusher 29 is through a differential control dif2, so as to preserve the possibility of move the ring 27 independently of the pusher 29 to change the time difference. The control differential comprises the wheels 46 and 42, the reference 47, the pinion 43 and the satellite mobile 44. The pinion 43 (Figure 7), which is driven on the column wheel, is the first input of the differential. The wheel formed by the wheel 42 driven on the return 47 is a second differential input, coaxial with the first, which is left free in rotation. The satellite mobile 44 comprises a wheel and a pinion which mesh respectively with the pinion 43 and the reference 47. The satellite mobile 44 is rotatably mounted around a pin 45 driven into the wheel 46 of the board. The wheel 46 constitutes the differential output.
Le mĆ©canisme de commande associĆ© au poussoir 29 comprend une bascule d'isolateur 40 prĆ©vue pour venir bloquer la deuxiĆØme entrĆ©e de diffĆ©rentielle 42 lorsque le poussoir 29 est actionnĆ©. On voit sur la figure 6, que la bascule d'isolateur 40 est commandĆ©e par une came 39 solidaire d'un doigt de commande 38. On peut voir Ć©galement que le doigt de commande 38 est lui-mĆŖme actionnĆ© par le poussoir 29 via une goupille 29' chassĆ©e sur le poussoir 29. Lors d'une pression sur le poussoir 29, la came 39 pivote et libĆØre la bascule d'isolateur 40 qui, contrainte par un ressort 41 , tombe et vient bloquer la roue d'entrĆ©e de diffĆ©rentiel 42. Continuant sa course, le poussoir 29 fait avancer d'un pas l'Ć©toile 30 (visible sur la figure 5), et donc Ć©galement le pignon d'entrĆ©e de diffĆ©rentiel 43, entraĆ®nant ainsi en rotation le mobile de satellite 44. La deuxiĆØme entrĆ©e de diffĆ©rentiel Ć©tant bloquĆ©e par la bascule d'isolateur 40, le renvoi 47 est Ć©galement bloquĆ©. Ainsi, c'est la roue de sortie de diffĆ©rentiel 46 qui est entraĆ®nĆ©e en rotation par le mobile de satellite 44. Comme la roue 46 engrĆØne elle-mĆŖme avec la couronne de sĆ©lection 27, cette derniĆØre est entraĆ®nĆ©e pas Ć  pas par l'action du poussoir 29. GrĆ¢ce au mĆ©canisme qui vient d'ĆŖtre dĆ©crit, les deux couronnes de sĆ©lection 22 et 27 peuvent tourner de faƧon synchrone, par pas de 1/24eme de tour, sous l'action du poussoir 29. Une fois la pression sur le poussoir 29 relĆ¢chĆ©e, ce dernier reprend sa place sous l'effet du ressort 34, et la goupille 29' ramĆØne le doigt de commande 38. Ainsi, la came 39 Ć©carte la bascule d'isolateur 40 des dents de la roue 42, libĆ©rant cette derniĆØre. Ainsi, lorsque le poussoir 29 est relĆ¢chĆ©, le train d'engrenages reliant la couronne de sĆ©lection 27 Ć  la roue 42 est libre de tourner. Il est donc possible de faire tourner la couronne de sĆ©lection 27 sans faire tourner la roue Ć  colonnes. Les figures 8 et 9 dĆ©crivent le mĆ©canisme prĆ©vu pour modifier la position angulaire du levier 25 relativement au levier 20. Ce mĆ©canisme permet de rĆ©gler le dĆ©calage horaire entre l'heure de rĆ©fĆ©rence et l'heure locale. Le mĆ©canisme de rĆ©glage du dĆ©calage horaire comprend une flasque infĆ©rieure 50 solidaire de la planche (non reprĆ©sentĆ©e) et qui porte une Ć©toile fixe Ć  douze dents 49, ainsi qu'un arbre 48. Un ressort annulaire mobile 53 est prĆ©vu pour coopĆ©rer avec l'Ć©toile 49. Une roue 51 et une flasque supĆ©rieure 52 (figure 9) sont montĆ©es rotatives sur l'arbre 48. La roue 51 engrĆØne avec la roue 24, et elle est solidaire de la flasque supĆ©rieure 52 ainsi que du ressort annulaire 53. En amenant la tige de remontoir (non reprĆ©sentĆ©e) en deuxiĆØme position tirĆ©e T2, on peut faire tourner la roue 51 , et donc la flasque supĆ©rieure 52 ainsi que le ressort annulaire 53. Le ressort annulaire 53 Ć©tant positionnĆ© par l'Ć©toile 49, la roue 51 se dĆ©place, sous l'action de la tige de remontoir, par pas de 1/12eme de tour. Le rapport d'engrenage entre la roue 51 et la roue 24 Ć©tant de 1/4, la roue 24 se dĆ©place donc par pas de 1/48eme de tour. Dans sa rotation, la roue 24 entraĆ®ne le levier 25, le ressort de rappel 26 et la couronne de sĆ©lection 27. De plus, si le levier 25 est contraint contre le cœur 18, la roue 24 entraĆ®ne Ć©galement le cœur lui-mĆŖme dans sa rotation. De plus, le cœur 18, lorsqu'il tourne, provoque la rotation de la roue des heures 8 via la roue de sortie de sĆ©lecteur 16.The control mechanism associated with the pusher 29 includes an isolator flip-flop 40 provided to block the second differential input 42 when the pusher 29 is actuated. It can be seen in FIG. 6 that the isolator rocker 40 is controlled by a cam 39 integral with a control finger 38. It can also be seen that the control finger 38 is itself actuated by the pusher 29 via a pin 29 'driven on the pusher 29. When pressing the pusher 29, the cam 39 pivots and releases the isolator rocker 40 which, constrained by a spring 41, falls and blocks the differential input wheel 42. Continuing its travel, the pusher 29 advances by one step the star 30 (visible in FIG. 5), and thus also the differential input gear 43, thereby rotating the satellite mobile 44. second differential input being blocked by the isolator rocker 40, the return 47 is also blocked. Thus, it is the differential output wheel 46 which is rotated by the satellite mobile 44. As the wheel 46 meshes with the selection ring 27, the latter is driven step by step by the action 29. with the push mechanism just described, both selection rings 22 and 27 can rotate synchronously in steps of 1/24 th lap, under the action of the plunger 29. once the pressure on the pusher 29 released, the latter resumes its place under the effect of the spring 34, and the pin 29 'returns the control finger 38. Thus, the cam 39 separates the isolator rocker 40 from the teeth of the wheel 42, releasing the latter. Thus, when the pusher 29 is released, the gear train connecting the selection ring 27 to the wheel 42 is free to rotate. It is therefore possible to rotate the selection ring 27 without rotating the column wheel. FIGS. 8 and 9 describe the mechanism provided for modifying the angular position of the lever 25 relative to the lever 20. This mechanism makes it possible to adjust the time difference between the reference time and the local time. The mechanism for adjusting the time difference comprises a lower flange 50 secured to the board (not shown) and which carries a star fixed to twelve teeth 49, and a shaft 48. A movable annular spring 53 is provided to cooperate with the Star 49. A wheel 51 and an upper flange 52 (FIG. 9) are rotatably mounted on the shaft 48. The wheel 51 meshes with the wheel 24, and it is integral with the upper flange 52 and the annular spring 53. bringing the winding stem (not shown) into the second pulled position T2, the wheel 51, and thus the upper flange 52 and the annular spring 53 can be rotated. The annular spring 53 being positioned by the star 49, the wheel 51 moves, under the action of the winding stem, in steps of 1/12 th of a turn. Since the gear ratio between the wheel 51 and the wheel 24 is 1/4, the wheel 24 moves in steps of 1/48 th of a revolution. In its rotation, the wheel 24 drives the lever 25, the return spring 26 and the selection ring 27. In addition, if the lever 25 is constrained against the heart 18, the wheel 24 also drives the heart itself into its seat. rotation. In addition, the heart 18, when rotating, causes the rotation of the hour wheel 8 via the selector output wheel 16.
Les figures 10 et 1 1 dĆ©crivent l'entraĆ®nement de l'affichage de l'aiguilles des heures JH. L'aiguille des heures peut ĆŖtre entraĆ®nĆ©e tout Ć  la fois par la roue de sortie de sĆ©lecteur 16 et par le mouvement de la montre. C'est la raison pour laquelle, dans le prĆ©sent exemple, l'entraĆ®nement de l'aiguille des heures se fait au travers d'un engrenage diffĆ©rentiel (rĆ©fĆ©rencĆ© dif1 sur la figure 1 1 ). Cet engrenage diffĆ©rentiel comprend un premier mobile d'entrĆ©e de diffĆ©rentiel formĆ© d'une roue 3 solidaire d'un pignon 4 par l'intermĆ©diaire de l'axe du diffĆ©rentiel 3', et un deuxiĆØme mobile d'entrĆ©e de diffĆ©rentiel formĆ© par une roue 15' et son pignon 6 qui sont montĆ©s rotatif sur l'axe 3'. L'engrenage comprend Ć©galement une roue 7 de sortie de diffĆ©rentiel qui est montĆ©e rotative sur l'axe 3', ainsi qu'un mobile de satellite 5 montĆ© rotatif autour d'une goupille g. chassĆ©e dans la planche de la roue 7. Le mobile de satellite est composĆ© d'une roue 5' qui engrĆØne avec le pignon 6 et d'un pignon 5" engrenant avec le pignon 4. Comme on peut le voir sur les figures 10 et 1 1 , une roue des heures supplĆ©mentaire 2 est chassĆ©e sur la roue des heures 1 du mouvement. Cette roue 2 engrĆØne avec la premiĆØre roue d'entrĆ©e 3 de l'engrenage diffĆ©rentiel. On peut voir Ć©galement que la roue de sortie de sĆ©lecteur 16 engrĆØne avec la deuxiĆØme roue d'entrĆ©e 15'. Comme la roue d'entrĆ©e 3 est solidaire du pignon de diffĆ©rentiel 4, le mouvement de la montre entraĆ®ne le mobile de satellite 5 en rotation par l'intermĆ©diaire du pignon 4. Comme le pignon 6 est solidaire de la roue 15', il est habituellement bloquĆ© par la roue de sortie de sĆ©lecteur 16. Ainsi, c'est la roue de sortie de diffĆ©rentiel 7 qui est entraĆ®nĆ©e en rotation par le mobile de satellite 5. Enfin, la roue de sortie de diffĆ©rentiel engrĆØne elle-mĆŖme avec la roue Ć  canon 8, entraĆ®nant ainsi l'aiguille des heures JH. Dans le prĆ©sent exemple, les diffĆ©rents rapports d'engrenages sont choisis de maniĆØre Ć  ce que deux tours de la roue Ć  canon 8 correspondent Ć  un tour de la roue de sortie de diffĆ©rentiel 7. La roue 7 effectue donc un tour par vingt-quatre heures. Comme on l'a vu, le mode de rĆ©alisation qui fait l'objet du prĆ©sent exemple, comporte Ć©galement une aiguille D prĆ©vue pour afficher le quantiĆØme. L'aiguille D est solidaire en rotation d'une Ć©toile de quantiĆØme 12 comptant 31 dents. Comme on peut le voir sur les figures 10 et 1 1 , l'Ć©toile de quantiĆØme 12 est maintenue dans la position correspondant Ć  une date donnĆ©e par un sautoir de quantiĆØme 13, lui-mĆŖme contraint par un ressort de sautoir de quantiĆØme 14. D'autre part, comme on l'a dĆ©jĆ  dit, la roue de sortie de diffĆ©rentiel 7 accomplit un tour en vingt-quatre heures. Elle porte un doigt d'entraĆ®nement de quantiĆØme 1 1 qui est prĆ©vu pour, chaque jour Ć  minuit, pousser d'une dent l'Ć©toile de quantiĆØme 12. La figure 1 1 montre encore que la denture de l'Ć©toile 12, comme le doigt d'entraĆ®nement 11 , est symĆ©trique. Cette caractĆ©ristique permet au quantiĆØme d'ĆŖtre non seulement incrĆ©mentĆ©, mais Ć©ventuellement aussi dĆ©crĆ©mentĆ© lorsque la date associĆ©e Ć  l'heure locale et celle associĆ©e Ć  l'heure de rĆ©fĆ©rence sont diffĆ©rentes, comme c'Ć©tait notamment le cas dans l'exemple dĆ©crit plus haut avec GenĆØve et Los Angeles.Figures 10 and 1 1 describe the training of the display of the hour hands JH. The hour hand can be driven at the same time by the selector output wheel 16 and the movement of the watch. This is why, in the present example, the driving of the hour hand is through a differential gear (referenced dif1 in Figure 1 1). This differential gear comprises a first differential input mobile formed of a wheel 3 integral with a pinion 4 via the axis of the differential 3 ', and a second differential input wheel formed by a wheel 15 'and its pinion 6 which are rotatably mounted on the axis 3'. The gear also comprises a differential output wheel 7 which is rotatably mounted on the axis 3 ', and a satellite mobile 5 rotatably mounted around a pin g. driven in the wheel board 7. The satellite mobile is composed of a wheel 5 'which meshes with the pinion 6 and a pinion 5' meshing with the pinion 4. As can be seen in Figures 10 and 11, an additional hour wheel 2 is driven on the hour wheel 1 of the movement. This wheel 2 meshes with the first input wheel 3 of the differential gear. It can also be seen that the selector output wheel 16 meshes with the second input wheel 15 '. As the input wheel 3 is integral with the differential gear 4, the movement of the watch causes the moving satellite 5 to rotate through the pinion 4. As the pinion 6 is integral with the wheel 15 ', it is usually blocked by the selector output wheel 16. Thus, it is the differential output wheel 7 which is rotated by the satellite mobile 5. Finally, the differential output wheel meshes with the wheel itself. with barrel 8, thus driving the hour hand JH. In the present example, the different gear ratios are chosen so that two turns of the 8-wheel wheel correspond to one revolution of the differential output wheel 7. The wheel 7 thus performs one revolution per twenty-four hours. As we have seen, the embodiment which is the subject of this example, also comprises a needle D provided for displaying the date. The needle D is integral in rotation with a date star 12 having 31 teeth. As can be seen in FIGS. 10 and 11, the date star 12 is held in the position corresponding to a date given by a calendar jumper 13, itself constrained by a calendar jumper spring 14. D On the other hand, as already mentioned, the differential output wheel 7 accomplishes a revolution in twenty-four hours. It carries a calendar drive finger January 1 which is provided for each day at midnight, pushing a tooth date star 12. Figure 1 1 still shows that the toothing of the star 12, as the drive finger 11, is symmetrical. This feature allows the date to be not only incremented, but possibly also decremented when the date associated with the local time and the date associated with the reference time are different, as was the case in the example described above. high with Geneva and Los Angeles.
La figue 10 montre encore une roue d'affichage jour/nuit 10. Cette roue est entraƮnƩe par la roue Ơ canon 8 par l'intermƩdiaire d'un renvoi 9. La roue d'affichage jour/nuit 10 accomplit un tour en 24 heures et son axe porte l'aiguille jour/nuit J/Q.Fig. 10 still shows a day / night display wheel 10. This wheel is driven by the barrel wheel 8 via a return 9. The day / night display wheel 10 accomplishes a turn in 24 hours. and its axis carries the day / night needle J / Q.
On comprendra en outre que diverses modifications et/ou amĆ©liorations Ć©videntes pour un homme du mĆ©tier peuvent ĆŖtre apportĆ©es au mode de rĆ©alisation qui fait l'objet de la prĆ©sente description sans sortir du cadre de la prĆ©sente invention dĆ©finie par les revendications annexĆ©es. En particulier, au lieu de prĆ©voir un seul cœur 18 prĆ©sentant une Ć©paisseur relativement importante, il est possible d'utiliser deux cœurs d'Ć©paisseur rĆ©duite qui sont coaxiaux et solidaires en rotation. Selon cette variante, un des cœurs pourrait ĆŖtre disposĆ© au niveau de la couronne de sĆ©lection 22 pour coopĆ©rer avec le levier 20, et l'autre cœur pourrait ĆŖtre disposĆ© au niveau de la couronne 27 pour coopĆ©rer avec le levier 25.It will be further understood that various modifications and / or improvements obvious to those skilled in the art can be made to the embodiment which is the subject of the present description without departing from the scope of the present invention defined by the appended claims. In particular, instead of providing a single core 18 having a relatively large thickness, it is possible to use two cores of reduced thickness which are coaxial and integral in rotation. according to this variant, one of the hearts could be disposed at the level of the selection ring 22 to cooperate with the lever 20, and the other heart could be disposed at the level of the ring 27 to cooperate with the lever 25.
D'autre part, on a vu que le dĆ©calage d'un fuseau horaire par rapport Ć  un autre fuseau peut aller de - 23h. Ć  + 23h. C'est la raison pour laquelle, dans le mode de rĆ©alisation qui a Ć©tĆ© dĆ©crit en dĆ©tail, un tour du cœur 18 et donc de la roue de sortie de sĆ©lecteur 16 correspond Ć  48 heures. Toutefois, nous avons dĆ©jĆ  dit que, dans le cas d'une montre qui n'indique pas le quantiĆØme, le dĆ©calage horaire se limite Ć  des valeurs comprises dans un intervalle infĆ©rieur Ć  24 heures. L'homme du mĆ©tier comprendra donc que le mode de rĆ©alisation dĆ©crit pourrait ĆŖtre facilement adaptĆ© Ć  cet intervalle plus petit. En particulier, un tour du cœur 18 et donc de la roue de sĆ©lecteur 16 pourrait ainsi correspondre Ć  24 heures. Dans ces conditions, la commande de la roue 24 devrait Ć©galement ĆŖtre adaptĆ©e pour que la roue 24 se dĆ©place par pas de 1/24eme de tour plutĆ“t que par pas de 1/48eme de tour. Cet effet peut ĆŖtre obtenu par exemple en rĆ©duisant le rapport d'engrenage entre la roue 51 et la roue 24 Ć  Ī›A. Dans le cas oĆ¹ le dĆ©calage horaire est compris dans un intervalle asymĆ©trique s'Ć©tendant de - 1 1 h. Ć  + 12h. ou de - 12h Ć  + 1 1 h., il est avantageux d'utiliser pour le cœur 18 un cœur asymĆ©trique comme celui reprĆ©sentĆ© par la figure 12. En effet, le sommet du cœur de la figure 12 est positionnĆ© Ć  1 1 h.30 au lieu de 12h., ce qui permet d'accommoder des dĆ©calages maximum de -1 1 h. et + 12h.On the other hand, we have seen that the shift of one time zone compared to another time zone can go from - 23h. at + 23h. This is the reason why, in the embodiment which has been described in detail, a turn of the heart 18 and thus of the selector output wheel 16 corresponds to 48 hours. However, we have already said that in the case of a watch that does not indicate the date, the time difference is limited to values within a range of less than 24 hours. Those skilled in the art will understand that the described embodiment could be easily adapted to this smaller range. In particular, a turn of the heart 18 and therefore of the selector wheel 16 could thus correspond to 24 hours. Under these conditions, the control of the wheel 24 should also be adapted so that the wheel 24 moves in steps of 1/24 th of a lap rather than in steps of 1/48 th of a turn. This effect can be obtained for example by reducing the gear ratio between the wheel 51 and the wheel 24 to Ī› A. In the case where the time difference is within an asymmetric interval extending from -1 h. at + 12h. or from - 12h to + 1 1 h., it is advantageous to use for the heart 18 an asymmetric heart such as that shown in Figure 12. Indeed, the top of the heart of Figure 12 is positioned at 1 1 h. 30 instead of 12h, which allows to accommodate shifts maximum -1 -1 h. and + 12h.
Finalement, l'homme du mĆ©tier comprendra Ć©galement qu'il est Ć©ventuellement possible de rĆ©duire la complexitĆ© et le coĆ»t de fabrication de la piĆØce d'horlogerie de la prĆ©sente invention en substituant par exemple un mĆ©canisme de dĆ©brayage Ć  l'un ou Ć  chacun des deux engrenages diffĆ©rentiels diffi et diff2. Finally, one skilled in the art will also understand that it is possible to reduce the complexity and the manufacturing cost of the timepiece of the present invention by substituting for example a disengaging mechanism for one or each of the two diffi differential gears and diff2.

Claims

REVEN DICATIONS REVEN DICATIONS
1. PiĆØce d'horlogerie telle qu'une montre-bracelet comprenant des moyens d'affichage de l'heure (H, j/n) et un mĆ©canisme permettant de commuter lesdits moyens d'affichage pour indiquer l'heure de l'un ou l'autre de deux fuseaux horaire, caractĆ©risĆ©e en ce que le mĆ©canisme comprend un cœur (18) mobile en rotation et reliĆ© aux moyens d'affichage de l'heure par une chaĆ®ne cinĆ©matique, le cœur Ć©tant prĆ©vu pour coopĆ©rer sĆ©lectivement avec un premier levier (20) pour faire indiquer aux moyens d'affichage l'heure de l'un des deux fuseaux horaire, et avec un deuxiĆØme levier (25) pour faire indiquer au moyens d'affichage l'heure de l'autre fuseau horaire, la commutation entre le premier et le deuxiĆØme levier Ć©tant commandĆ©e manuellement, le dĆ©calage horaire entre les deux fuseaux Ć©tant dĆ©terminĆ© par la position relative d'un levier par rapport Ć  l'autre.A timepiece such as a wristwatch including means for displaying the time (H, j / n) and a mechanism for switching said display means to indicate the time of one or the other of two time zones, characterized in that the mechanism comprises a heart (18) movable in rotation and connected to the time display means by a kinematic chain, the core being provided to selectively cooperate with a first lever (20) for indicating to the display means the time of one of the two time zones, and with a second lever (25) for indicating to the display means the time of the other time zone, switching between the first and second lever being controlled manually, the time difference between the two time zones being determined by the relative position of a lever relative to the other.
2. PiĆØce d'horlogerie selon la revendication 1 , caractĆ©risĆ©e en ce que les moyens d'affichage de l'heure (H, j/n) comprennent un affichage de l'heure sur douze heures (H). 2. Timepiece according to claim 1, characterized in that the means for displaying the time (H, j / n) comprise a twelve-hour time display (H).
3. PiĆØce d'horlogerie selon la revendication 1 ou 2, caractĆ©risĆ©e en ce que les moyens d'affichage de l'heure (H, j/n) comprennent un affichage de l'heure sur vingt-quatre heures (j/n).Timepiece according to claim 1 or 2, characterized in that the means for displaying the time (H, j / n) comprise a time display over twenty-four hours (d / n). .
4. PiĆØce d'horlogerie selon la revendication 3, caractĆ©risĆ©e en ce que les rapports d'engrenage de la chaĆ®ne cinĆ©matique reliant le cœur (18) aux moyens d'affichage de l'heure (H, j/n) sont choisis de maniĆØre Ć  ce qu'une rotation complĆØte du cœur corresponde Ć  24 heures.4. Timepiece according to claim 3, characterized in that the gear ratios of the kinematic chain connecting the core (18) to the means for displaying the time (H, j / n) are chosen so a complete rotation of the heart corresponds to 24 hours.
5. PiĆØce d'horlogerie selon la revendication 4, caractĆ©risĆ©e en ce que le cœur (18) est asymĆ©trique, le sommet du cœur Ć©tant positionnĆ© Ć  + 1 1 h30 ou Ć  - 1 1 h30. 5. Timepiece according to claim 4, characterized in that the heart (18) is asymmetrical, the top of the core being positioned at + 1 1 h 30 or at -1 1 h 30.
6. PiĆØce d'horlogerie selon l'une des revendications 1 , 2 ou 3, caractĆ©risĆ©e en ce qu'elle comprend des moyens d'indication du quantiĆØme (D).6. Timepiece according to one of claims 1, 2 or 3, characterized in that it comprises means for indicating the date (D).
7. PiĆØce d'horlogerie selon la revendication 6, caractĆ©risĆ©e en ce que les rapports d'engrenage de la chaĆ®ne cinĆ©matique reliant le cœur (18) aux moyens d'affichage de l'heure (H, j/n) sont choisis de maniĆØre Ć  ce qu'une rotation complĆØte du cœur corresponde Ć  48 heures.7. Timepiece according to claim 6, characterized in that the gear ratios of the kinematic chain connecting the core (18) to the time display means (H, j / n) are chosen so a complete rotation of the heart corresponds to 48 hours.
8. PiĆØce d'horlogerie selon l'une des revendications prĆ©cĆ©dentes, caractĆ©risĆ©e en ce qu'elle comporte des moyens de commandes prĆ©vus pour ajuster le dĆ©calage horaire entre les deux fuseaux en modifiant la position d'au moins un des leviers (25) autour du cœur (18). 8. Timepiece according to one of the preceding claims, characterized in that it comprises control means provided for adjusting the time difference between the two time zones by changing the position of at least one of the levers (25) around of the heart (18).
9. PiĆØce d'horlogerie selon la revendication 8, caractĆ©risĆ©e en ce que les moyens de commandes prĆ©vus pour ajuster le dĆ©calage horaire comprennent une tige prĆ©vue aussi pour le remontage et de mise Ć  l'heure de la piĆØce d'horlogerie.9. Timepiece according to claim 8, characterized in that the control means provided for adjusting the time difference comprise a rod also provided for the reassembly and time setting of the timepiece.
10. PiĆØce d'horlogerie selon l'une des revendications prĆ©cĆ©dentes, caractĆ©risĆ©e en ce que la chaĆ®ne cinĆ©matique reliant le cœur (18) aux moyens d'affichage de l'heure (H, j/n) comprend un engrenage diffĆ©rentiel (5', 5" 6, 7, 15).Timepiece according to one of the preceding claims, characterized in that the kinematic chain connecting the core (18) to the time display means (H, j / n) comprises a differential gear (5 ' 5, 6, 7, 15).
1 1. PiĆØce d'horlogerie selon l'une des revendications prĆ©cĆ©dentes, caractĆ©risĆ©e en ce que la commutation entre le premier et le deuxiĆØme levier (20, 25) est commandĆ©e Ć  l'aide d'un bouton-poussoir (P ; 29). 1 1. Timepiece according to one of the preceding claims, characterized in that the switching between the first and the second lever (20, 25) is controlled by means of a push-button (P; 29). .
EP07727745A 2006-04-07 2007-04-03 Timepiece comprising a dual time zone mechanism Active EP2008159B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07727745A EP2008159B1 (en) 2006-04-07 2007-04-03 Timepiece comprising a dual time zone mechanism

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06007396 2006-04-07
EP07727745A EP2008159B1 (en) 2006-04-07 2007-04-03 Timepiece comprising a dual time zone mechanism
PCT/EP2007/053274 WO2007115984A2 (en) 2006-04-07 2007-04-03 Timepiece comprising a dual time zone mechanism

Publications (2)

Publication Number Publication Date
EP2008159A2 true EP2008159A2 (en) 2008-12-31
EP2008159B1 EP2008159B1 (en) 2010-06-09

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Application Number Title Priority Date Filing Date
EP07727745A Active EP2008159B1 (en) 2006-04-07 2007-04-03 Timepiece comprising a dual time zone mechanism

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EP (1) EP2008159B1 (en)
AT (1) ATE470891T1 (en)
DE (1) DE602007007070D1 (en)
WO (1) WO2007115984A2 (en)

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WO2013030268A1 (en) 2011-09-01 2013-03-07 Rolex S.A. Time piece capable of displaying two time zones
WO2023180864A1 (en) 2022-03-25 2023-09-28 Michel Parmigiani Timepiece movement comprising a device for displaying at least two time zones

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EP2128719A1 (en) * 2008-05-29 2009-12-02 FrƩdƩric Crettex Display device
EP2136271B1 (en) * 2008-06-17 2010-12-22 Montres Breguet S.A. Display device for displaying one of two different indications using the same indicating element of a timepiece
EP2362276B1 (en) 2010-02-25 2012-10-31 Montres Breguet SA Programmable and reprogrammable mechanical memory wheel for a timepiece
EP2362277B1 (en) 2010-02-25 2012-10-31 Montres Breguet SA On-demand time zone displayed on the main hand of a timepiece
CH703261B1 (en) * 2010-06-08 2014-11-28 Bulgari Horlogerie S A Timepiece fitted with a mobile time indication needle between two positions.
EP2444861B1 (en) * 2010-10-22 2013-05-01 Audemars Piguet (Renaud et Papi) SA Function selector
EP3462251B1 (en) * 2017-09-29 2020-06-10 Montres Breguet S.A. Time-setting mechanism for a clock movement
CH715204A2 (en) * 2018-07-26 2020-01-31 Eta Sa Mft Horlogere Suisse Method for changing the time display mode of an electronic watch with analog display, and associated watch.

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US3503203A (en) * 1967-11-14 1970-03-31 Bulova Watch Co Inc Two-zone timepiece
CH693155A5 (en) * 1998-11-04 2003-03-14 Andreas Strehler Timepiece display mechanism has single display organ switched between alternate display modes

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Cited By (3)

* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013030268A1 (en) 2011-09-01 2013-03-07 Rolex S.A. Time piece capable of displaying two time zones
US9405274B2 (en) 2011-09-01 2016-08-02 Rolex Sa Time piece capable of displaying two time zones
WO2023180864A1 (en) 2022-03-25 2023-09-28 Michel Parmigiani Timepiece movement comprising a device for displaying at least two time zones

Also Published As

Publication number Publication date
ATE470891T1 (en) 2010-06-15
EP2008159B1 (en) 2010-06-09
DE602007007070D1 (en) 2010-07-22
WO2007115984A2 (en) 2007-10-18
WO2007115984A3 (en) 2007-11-29

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