EP2602674A1 - Timepiece display device with combined display means - Google Patents

Timepiece display device with combined display means Download PDF

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Publication number
EP2602674A1
EP2602674A1 EP11192298.5A EP11192298A EP2602674A1 EP 2602674 A1 EP2602674 A1 EP 2602674A1 EP 11192298 A EP11192298 A EP 11192298A EP 2602674 A1 EP2602674 A1 EP 2602674A1
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EP
European Patent Office
Prior art keywords
display
drive
coupling
coupling means
control
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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
EP11192298.5A
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German (de)
French (fr)
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EP2602674B1 (en
Inventor
Pascal Lagorgette
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ETA SA Manufacture Horlogere Suisse
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ETA SA Manufacture Horlogere Suisse
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Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP11192298.5A priority Critical patent/EP2602674B1/en
Priority to US13/705,798 priority patent/US8750079B2/en
Priority to JP2012267862A priority patent/JP5411982B2/en
Priority to KR1020120142370A priority patent/KR101445455B1/en
Priority to CN201210525728.7A priority patent/CN103149829B/en
Publication of EP2602674A1 publication Critical patent/EP2602674A1/en
Priority to HK13113722.3A priority patent/HK1186255A1/en
Application granted granted Critical
Publication of EP2602674B1 publication Critical patent/EP2602674B1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • 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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C17/00—Indicating the time optically by electric means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor

Definitions

  • the invention relates to a display combining clock display device comprising at least a first display arranged to cooperate via first transmission means with first drive or control means, and at least one second display, arranged to cooperate via second transmission means with second drive or control means.
  • the invention also relates to a timepiece comprising a control means arranged to control a first display by first drive or control means, and to control a second display by second drive or control means, and comprising such a display device.
  • the invention relates to the field of scientific instruments, and more particularly the field of mechanical and / or electronic watchmaking.
  • a display On a quartz movement watch, when the rotor of the stepping motor realizes a step, a display, usually a needle, performs a pivoting of a given angular step, by a few degrees. At the end of this pivoting, the needle stops, and this stop is usually accompanied by an oscillation which can be visually unpleasant for the user, and especially when the pivoting movement of the needle is slow, as when displaying a particular function, for example a compass function, with a single-phase motor. It is known to reduce or eliminate this oscillation by the interposition of an elastic friction washer in the train, so as to create a continuous friction that completely damps the oscillation, but at the cost of excessive energy consumption, and therefore a loss of yield.
  • Another way to eliminate the oscillation defect is to make a rapid movement of the needle, which then no longer has time to oscillate at the end of each step, however such rapid movement can not be achieved for a single-phase motor, as conventionally used to drive the display during the implementation of a particular function, other than the display of the time.
  • the patent application EP 1 916 574 in the name of VAUCHER SA describes a pointer for the display of several information, comprising a first index portion corresponding for example to a conventional display of time, and which is articulated a second portion of index provided with a radial or conical toothing, intended to be driven by the pivotal movement about a second axis of rotation perpendicular to the first axis of rotation about which pivots the first index portion.
  • the patent CH 528 765 of 1972 in the name of OMEGA SA describes a mechanism to change the indication of the hour hand by the rod, without additional push.
  • This mechanism includes a lower timer wheel controlling by a timer gear the hour hand.
  • the shaft of this pinion carries, crazy, an upper wheel, which is coaxial and magnetically positioned relative to the lower wheel, and actuated by the movement.
  • the lower wheel is controlled by the rod to turn the hour hand without influencing the indication of the other hands.
  • a flat spring with a ramp tends to push, through a support plate that bears on the upper wheel via a star-shaped elastic foil, the upper wheel to the lower wheel.
  • the position of the rod controls the pivoting of a rocker whose arm cooperates with the ramp of the flat spring, to allow, depending on the position of the rod, the distance or bringing the upper and lower wheels together.
  • the friction operated by the foil is greater than the magnetic coupling force between the lower and upper wheels.
  • the support plate comprises lugs through and trapping the upper wheel, and capable of cooperating with passages that includes the lower wheel for driving thereof by mechanical coupling in the setting position.
  • the springs introduce in this mechanism resistant efforts that alter its performance.
  • a patent application JP 58 097 682 in the name of SEIKOSHA describes a drive of the needles by magnetic coupling with the wheels, in a configuration involving a large thickness of the movement.
  • the document DE 254 7657 in the name of JUNG exhibits a classic clock mechanism driving needles hidden behind a plate, the end of each needle is magnetized, and draws through the plate a ball, which is visible only by the user.
  • the document US 3701252 to TAKESHI OKAMOTO describes a similar system.
  • the invention relates to a display combining clock display device comprising at least a first display arranged to cooperate via first transmission means with first drive or control means, and at least one second display, arranged to cooperate via second transmission means with second drive or control means, characterized in that, on the one hand, first contactless coupling means are carried by said first display or by said first transmission means, secondly second non-contact complementary coupling means are carried by said second display or by said second transmission means, and said first coupling means are arranged to cooperate in a complementary manner in non-contact coupling by attraction with said second complementary coupling means for, quan d they are located in the immediate vicinity of each other, in certain relative positions only of said first display relative to said second display, to secure the movement of said first display and said second display, the cooperation between said first coupling means and said second display means; complementary coupling creating an additional force or torque between said first display and the second display so as to damp their oscillation.
  • said first coupling means and said second complementary coupling means are of magnetic nature.
  • said first coupling means and said second complementary coupling means are of electrostatic nature.
  • said first coupling means and said second complementary coupling means are respectively disposed on said first display and on said second display.
  • said first coupling means and said second complementary coupling means are respectively disposed on said first transmission means and on said second transmission means.
  • said first transmission means or said second transmission means are disengageable under the effect of a command initiated by a control means, so as to allow the driving of that of said first display and second display which is disengaged from its drive means or control by the one that is engaged with its drive means or command.
  • said first transmission means and said second transmission means are disengageable under the effect of a command initiated by a control means, so as to allow the driving of said first display and / or said second display by third drive or control means or by a magnetic field or by an electric field.
  • a control means is arranged to shift in time, a command of a first action on said first display by said first display means. driving or control, and a command of a second action on said second display by said second drive or control means, so as to damp any oscillation of the display maneuvered last, by the effect of the reciprocal attraction of said first coupling means and said second complementary coupling means during its docking in the vicinity of the display maneuvered first.
  • the invention also relates to a timepiece comprising a control means arranged to control a first display by first drive or control means, and to control a second display by second drive or control means, and comprising such a display device, characterized in that said display device is controlled by said control means.
  • the invention relates to the field of scientific instruments, and more particularly the field of mechanical and / or electronic watchmaking.
  • the invention will be more specifically described for a preferred application, but not limited to a watch having display functions other than the display of the time, and using for these additional displays all or part of the time display means.
  • the invention is applicable to both a mechanical movement watch and a quartz movement watch, or a mechanical-electronic mixed-technology watch.
  • the invention relates to a display device 100 clock display combination.
  • This device 100 comprises at least a first display 1 arranged to cooperate via first transmission means 11 with first drive or control means 10, and at least a second display 2, arranged to cooperate via second transmission means 21 with second drive or control means 20.
  • first non-contact coupling means 12 are carried by the first display 1 or by the first transmission means 11, and secondly second complementary coupling means 22 without contact are carried by the second display 2 or by the second transmission means 21.
  • the first coupling means 12 are arranged to cooperate in complementary manner in contactless coupling by attraction with the second complementary coupling means 22, when they are located in the immediate vicinity of each other, in certain relative positions only of the first display 1 relative to the second display 2, secure the movement of the first display 1 and the second display 2.
  • first coupling means 12 and the second complementary coupling means 22 creates an additional force or torque between the first display 1 and the second display 2 so as to damp the oscillation or / and the vibration of this first display 1 and / or this second display 3.
  • the invention may extend to a number of displays greater than two, for example three concentric hands of a watch, or the like.
  • the example described in detail here of the cooperation of two displays is not limiting.
  • the oscillation of a display in particular of a hand of a timepiece or a watch, controlled by an electric motor, is caused, on the one hand by the inertia in the rotor of this motor, which oscillates after a driving impulse, and, on the other hand, by the play in the wheels, the inertia of the display or needle and the wheels making them oscillate within the limits of the play of the wheels.
  • a coupling according to the invention in particular magnetic or electrostatic, makes it possible to introduce momentarily, and in certain positions only, an additional force or torque, which is similar to a friction due to the effect produced, which makes it possible to damp the oscillation.
  • the damping quality depends on the setting of the coupling, but this is always present. In short, it is only in particular relative positions of displays or needles that this depreciation is created.
  • first coupling means 12 and the second complementary coupling means 22 are magnetic in nature.
  • first coupling means 12 and the second complementary coupling means 22 are of electrostatic nature.
  • the first coupling means 12 and the second complementary coupling means 22 may be arranged in different ways on the kinematic chain of each of the displays.
  • first coupling means 12 and the second complementary coupling means 22 are respectively disposed on the first display 1 and on the second display 2.
  • first coupling means 12 and the second complementary coupling means 22 are arranged respectively on the first transmission means 11 and on the second transmission means 21.
  • the first transmission means 11 or the second transmission means 21 are disengageable under the effect of a command initiated by a control means 30, so as to allow the drive of the first display 1 and second display 2, which is disengaged from its drive means or control, by the one which is engaged with its drive means or control.
  • the first transmission means 11 and the second transmission means 21 are disengageable under the effect of a control initiated by a control means 30, so as to allow the driving of the first display 1 or / and the second display 2 by third drive or control means or by a magnetic field or by an electric field.
  • This training can, again, be obtained under the effect of the processing of a signal emitted by a measurement sensor or of a status report of a physical quantity, for example a radioactivity sensor, a barometric sensor, a sensor of a lighting, or other.
  • the output maneuver of the coupling position is performed with a printed pulse, directly or indirectly, at least one of the two displays relative to the other.
  • this pulse can easily result from a peak current or voltage on a drive motor, or the like.
  • the pulse can be achieved by a cam or a ramp.
  • this output maneuver not only intervenes at the output of the coupling position, but also at any moment when, due to the normal operation of the movement, the first display 1 and the second display 2 are in the particular indexing position relative to each other.
  • the first coupling means 12 and the second means of complementary coupling 22 come into cooperation each time these two needles are in alignment position, that is to say each time the compass function is implemented, friends also every time the normal movement of the movement presents them in alignment with each other, which happens twenty-four times a day for a twelve-hour display dial.
  • the drive means of the displays in order to overcome the force or the attractive torque exerted on each other by the first coupling means 12 and the second complementary coupling means 22, it is then advantageous to perform such an impulse in each of these circumstances.
  • the first drive or control means 10, and the second drive or control means 20 can also operate in continuous movement, they then require a dimensioning allowing them to overcome, in normal operation, the force or the torque of attraction, while the use of a disengagement function of one of the two displays at the end of the docking maneuver allows the force or the attraction torque to gain ascendancy over the inertial force, in order to perform a damped indexing, and without any vibration.
  • the indexing between the displays can be multiple, the figure 2 illustrates a case where a wheel of the first transmission means 11 carries, opposed to 180 ° relative to its axis of pivoting, first coupling means 12A, and other first coupling means 12B, while a wheel of the second transmission means 21 carries a single second coupling means 22.
  • This configuration allows thus, according to the commands given by the control means 30 to the first drive or control means 10, and to the second drive or control means 20, to use the displays 1 and 2 in alignment or in superposition, according to the function used.
  • the figure 3 illustrates a case where the first coupling means 12 and the second coupling means 22 are arranged so as to index the first display 1 and the second display 2 with a given angular offset ⁇ .
  • a control means 30 is arranged to shift in time, a command of a first action on the first display 1 by the first drive or control means 10, and control of a second action on the second display 2 by the second drive or control means 20.
  • This time shift is performed so as to damp any oscillation of the last operated display, by the effect of the mutual attraction of the first coupling means 12 and the second complementary coupling means 22 during its docking in the vicinity of the first maneuvered display.
  • the first display 1 is constituted by the hour hand
  • the second display 2 is constituted by the minute hand.
  • These two needles change function when switching to compass mode, when they are aligned with each other and then facing north magnetic.
  • the object of the invention is to rapidly dampen the oscillation of the needle at each end of step, in compass mode. Since the duration of operation in compass mode represents only a very small part of the operating time of the watch, the solution offered by the invention must not penalize consumption in normal operation.
  • the alignment configuration of both hands occurs 24 times a day in normal operation for normal time display.
  • Engine control both needles are done one after the other.
  • the minute hand moves the minute hand remains fixed, then when the hour hand has finished its step, it is the minute hand that moves while the hour hand remains fixed.
  • the damping of the end of the pitch of the needle is achieved by the coupling, preferably magnetic, or electrostatic, between the hour wheel and the minute wheel.
  • the magnetic coupling can be achieved by magnet on the minute wheel and a magnetic pin on the hour wheel, or directly at the level of the needles.
  • the magnetic coupling with the hour wheel immediately dampens its oscillation.
  • a mechanical coupling can be achieved in the same way with spring elements on the wheels or mechanical, the latter solution is however less advantageous than the magnetic and electrostatic solutions in terms of energy consumption.
  • the solution thus implemented by the invention is made at the mechanical components of the timepiece, and does not impact the driver. The very low over-consumption generated by this solution only takes place in compass mode and 24 times / day on a few rotor impulses.
  • the coupling torque is dimensioned, resulting from the cooperation of the first coupling means 12 and the second coupling means 22, so that it remains lower to the positioning torque delivered by the drive motor of one of the displays, reported at the pivot axis of this display.
  • one (static) display is immobilized before the other (mobile), as in particular in the example of the compass above where one always cuts one of the two engines while one activates the other, the static display is thus not driven by the movement of the mobile display.
  • control means 30 comprises software that blocks the motor of the static display by re-injecting current into the coil.
  • the mobile display may require more current to be able to take its step, but the impact on consumption remains low, because in the preferred case of the needles of a clock, the alignment of the needles is done 24 times per day only.
  • the invention also relates to a timepiece 1000 comprising a control means 30 arranged to control a first display 1 by first drive or control means 10, and to control a second display 2 by second drive means or control 20, and including such a display device 100, controlled by this control means 30.

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

Abstract

The device (100) has a display unit (1) that is arranged to cooperate with a drive unit (10) via a transmission unit (11). A coupling unit (12) is arranged to cooperate with another complementary coupling unit (22). The former coupling unit and the latter coupling unit are located in immediate proximity to each other in only certain relative positions of the display unit and another display unit (2). A cooperation between the former coupling unit and the latter coupling unit creates an additional torque or force between the display units to damp oscillation. An independent claim is also included for a timepiece.

Description

Domaine de l'inventionField of the invention

L'invention concerne un dispositif d'affichage d'horlogerie à combinaison d'afficheurs comportant au moins un premier afficheur agencé pour coopérer par l'intermédiaire de premiers moyens de transmission avec des premiers moyens d'entraînement ou de commande, et au moins un deuxième afficheur, agencé pour coopérer par l'intermédiaire de deuxièmes moyens de transmission avec des deuxièmes moyens d'entraînement ou de commande.The invention relates to a display combining clock display device comprising at least a first display arranged to cooperate via first transmission means with first drive or control means, and at least one second display, arranged to cooperate via second transmission means with second drive or control means.

L'invention concerne encore une pièce d'horlogerie comportant un moyen de pilotage agencé pour commander un premier afficheur par des premiers moyens d'entraînement ou de commande, et pour commander un deuxième afficheur par des deuxièmes moyens d'entraînement ou de commande, et comportant un tel dispositif d'affichage.The invention also relates to a timepiece comprising a control means arranged to control a first display by first drive or control means, and to control a second display by second drive or control means, and comprising such a display device.

L'invention concerne le domaine des instruments scientifiques, et plus particulièrement le domaine de l'horlogerie mécanique ou/et électronique.The invention relates to the field of scientific instruments, and more particularly the field of mechanical and / or electronic watchmaking.

Arrière-plan de l'inventionBackground of the invention

Sur une montre à mouvement à quartz, lorsque le rotor du moteur pas à pas réalise un pas, un afficheur, généralement une aiguille, effectue un pivotement d'un pas angulaire donné, de quelques degrés. A la fin de ce pivotement, l'aiguille s'arrête, et cet arrêt est en général accompagné d'une oscillation qui peut être visuellement désagréable pour l'utilisateur, et notamment quand le mouvement de pivotement de l'aiguille est lent, comme lors d'un affichage d'une fonction particulière, par exemple d'une fonction boussole, avec un moteur monophasé. Il est connu de réduire ou supprimer cette oscillation par l'interposition d'une rondelle élastique de friction dans le rouage, de façon à créer un frottement continu qui amortit complètement l'oscillation, mais au prix d'une surconsommation d'énergie conséquent, et donc d'une perte de rendement.On a quartz movement watch, when the rotor of the stepping motor realizes a step, a display, usually a needle, performs a pivoting of a given angular step, by a few degrees. At the end of this pivoting, the needle stops, and this stop is usually accompanied by an oscillation which can be visually unpleasant for the user, and especially when the pivoting movement of the needle is slow, as when displaying a particular function, for example a compass function, with a single-phase motor. It is known to reduce or eliminate this oscillation by the interposition of an elastic friction washer in the train, so as to create a continuous friction that completely damps the oscillation, but at the cost of excessive energy consumption, and therefore a loss of yield.

Une autre façon de supprimer le défaut d'oscillation est d'effectuer un déplacement rapide de l'aiguille, qui n'a alors plus le temps d'osciller à la fin de chaque pas, toutefois un tel déplacement rapide ne peut être réalisé pour un moteur monophasé, tel que classiquement utilisé pour entraîner l'afficheur lors de la mise en oeuvre d'une fonction particulière, autre que l'affichage de l'heure.Another way to eliminate the oscillation defect is to make a rapid movement of the needle, which then no longer has time to oscillate at the end of each step, however such rapid movement can not be achieved for a single-phase motor, as conventionally used to drive the display during the implementation of a particular function, other than the display of the time.

De façon générale se pose le problème de mieux réaliser le couplage entre une pluralité d'afficheurs, notamment deux afficheurs, avec la déperdition d'énergie la plus faible possible, tant lors du couplage entre ces afficheurs que lors de leur séparation.In general, there is the problem of better coupling between a plurality of displays, including two displays, with the lowest possible energy loss, both during the coupling between these displays and during their separation.

Il est connu d'effectuer un couplage mécanique entre afficheurs, notamment par friction, et plus particulièrement à l'aide d'un ou plusieurs ressorts. La demande de brevet FR 2 256 459 au nom de TIMEX CO décrit ainsi un mécanisme de fuseau avec accouplement et arrêt à ressort. Le brevet GB 731 689 au nom de HAMM divulgue un entraînement synchrone d'un second jeu d'aiguilles de réglage d'alarme, par le jeu principal, après le passage de l'heure de l'alarme, sous l'action de ressorts.It is known to perform a mechanical coupling between displays, in particular by friction, and more particularly with the aid of one or more springs. The patent application FR 2,256,459 in the name of TIMEX CO thus describes a spindle mechanism with coupling and spring stop. The patent GB 731 689 in the name of HAMM discloses a synchronous drive of a second set of alarm setting hands, by the main game, after the passage of the alarm time, under the action of springs.

La demande de brevet EP 1 916 574 au nom de VAUCHER SA décrit une aiguille indicatrice pour l'affichage de plusieurs informations, comportant un première portion d'index correspondant par exemple à un affichage classique de l'heure, et à laquelle est articulée une deuxième portion d'index munie d'une denture radiale ou conique, destinée à être entraînée par le mouvement en pivotement autour d'un deuxième axe de rotation perpendiculaire au premier axe de rotation autour duquel pivote la première portion d'index.The patent application EP 1 916 574 in the name of VAUCHER SA describes a pointer for the display of several information, comprising a first index portion corresponding for example to a conventional display of time, and which is articulated a second portion of index provided with a radial or conical toothing, intended to be driven by the pivotal movement about a second axis of rotation perpendicular to the first axis of rotation about which pivots the first index portion.

Différents types de couplage magnétique ont été décrits pour des applications particulières, et toujours entre un moyen moteur et un seul afficheur. Le brevet CH 528 765 de 1972 au nom de OMEGA SA décrit un mécanisme permettant de changer l'indication de l'aiguille des heures par la tige, sans poussoir supplémentaire. Ce mécanisme comporte une roue de minuterie inférieure commandant par un pignon de minuterie l'aiguille des heures. L'arbre de ce pignon porte, folle, une roue supérieure, qui est coaxiale et positionnée magnétiquement par rapport à la roue inférieure, et actionnée par le mouvement. La roue inférieure est commandée par la tige pour tourner l'aiguille des heures sans influencer l'indication des autres aiguilles. Un ressort plat comportant une rampe tend à pousser, par l'intermédiaire d'une plaque d'appui qui porte sur la roue supérieure via un clinquant à bras élastiques en étoile, la roue supérieure vers la roue inférieure. La position de la tige commande le pivotement d'une bascule dont un bras coopère avec la rampe du ressort plat, pour autoriser, selon la position de la tige, l'éloignement ou le rapprochement des roues supérieure et inférieure. La friction opérée par le clinquant est supérieure à la force magnétique de couplage entre les roues inférieure et supérieure. La plaque d'appui comporte des tenons traversant et emprisonnant la roue supérieure, et susceptibles de coopérer avec des passages que comporte la roue inférieure pour l'entraînement de celle-ci par couplage mécanique en position de mise à l'heure. Les ressorts introduisent dans ce mécanisme des efforts résistants qui altèrent son rendement.Different types of magnetic coupling have been described for particular applications, and always between a motor means and a single display. The patent CH 528 765 of 1972 in the name of OMEGA SA describes a mechanism to change the indication of the hour hand by the rod, without additional push. This mechanism includes a lower timer wheel controlling by a timer gear the hour hand. The shaft of this pinion carries, crazy, an upper wheel, which is coaxial and magnetically positioned relative to the lower wheel, and actuated by the movement. The lower wheel is controlled by the rod to turn the hour hand without influencing the indication of the other hands. A flat spring with a ramp tends to push, through a support plate that bears on the upper wheel via a star-shaped elastic foil, the upper wheel to the lower wheel. The position of the rod controls the pivoting of a rocker whose arm cooperates with the ramp of the flat spring, to allow, depending on the position of the rod, the distance or bringing the upper and lower wheels together. The friction operated by the foil is greater than the magnetic coupling force between the lower and upper wheels. The support plate comprises lugs through and trapping the upper wheel, and capable of cooperating with passages that includes the lower wheel for driving thereof by mechanical coupling in the setting position. The springs introduce in this mechanism resistant efforts that alter its performance.

Une demande de brevet JP 58 097 682 au nom de SEIKOSHA décrit un entraînement des aiguilles par couplage magnétique avec les roues, dans une configuration impliquant une forte épaisseur du mouvement.A patent application JP 58 097 682 in the name of SEIKOSHA describes a drive of the needles by magnetic coupling with the wheels, in a configuration involving a large thickness of the movement.

Le document DE 254 7657 au nom de JUNG expose un mécanisme horloger classique entraînant des aiguilles cachées derrière une plaque, l'extrémité de chaque aiguille est aimanté, et attire au travers de la plaque une bille, qui seule est visible par l'utilisateur. Le document US 3701 252 au nom de TAKESHI OKAMOTO décrit un système analogue.The document DE 254 7657 in the name of JUNG exhibits a classic clock mechanism driving needles hidden behind a plate, the end of each needle is magnetized, and draws through the plate a ball, which is visible only by the user. The document US 3701252 to TAKESHI OKAMOTO describes a similar system.

La demande de brevet EP 0 308 243 au nom de SEIKO décrit un couplage magnétique sur élément d'affichage pour faire apparaître des index en forme de billes enfermés dans une chambre en placage contre un guichet, ou encore pour déclencher le mouvement d'un décor monté sur ressort lors du passage de pôles d'un élément magnétique, rotor ou aiguille.The patent application EP 0 308 243 in the name of SEIKO describes a magnetic coupling on a display element to reveal bead-shaped indexes enclosed in a veneer chamber against a window, or to trigger the movement of a decor mounted on a spring during the passage of poles of an element magnetic, rotor or needle.

Toutefois, si on trouve des solutions pour l'entraînement ou la visualisation d'un afficheur, l'art antérieur ne propose pas d'indexage entre deux afficheurs de grandeurs différentes.However, if we find solutions for driving or viewing a display, the prior art does not propose indexing between two displays of different sizes.

Résumé de l'inventionSummary of the invention

L'invention se propose de résoudre les problèmes et limites de l'art antérieur lors du couplage d'afficheurs :

  • l'oscillation d'au moins un des afficheurs en phase d'accostage par rapport à un autre afficheur ;
  • la consommation importante d'énergie, pour réaliser l'accostage entre deux afficheurs, ou/et pour dégager l'un de l'autre ces deux afficheurs,
pour réaliser un déplacement d'afficheur, notamment d'aiguille, qui soit fluide lors d'un mouvement continu.The invention proposes to solve the problems and limitations of the prior art when coupling displays:
  • the oscillation of at least one of the displays in docking phase with respect to another display;
  • the high energy consumption, to achieve the docking between two displays, and / or to release these two displays from one another,
to perform a display movement, including needle, which is fluid during a continuous movement.

A cet effet, l'invention concerne un dispositif d'affichage d'horlogerie à combinaison d'afficheurs comportant au moins un premier afficheur agencé pour coopérer par l'intermédiaire de premiers moyens de transmission avec des premiers moyens d'entraînement ou de commande, et au moins un deuxième afficheur, agencé pour coopérer par l'intermédiaire de deuxièmes moyens de transmission avec des deuxièmes moyens d'entraînement ou de commande, caractérisé en ce que, d'une part des premiers moyens de couplage sans contact sont portés par ledit premier afficheur ou par lesdits premiers moyens de transmission, d'autre part des deuxièmes moyens de couplage complémentaire sans contact sont portés par ledit deuxième afficheur ou par lesdits deuxièmes moyens de transmission, et que lesdits premiers moyens de couplage sont agencés pour coopérer de façon complémentaire en couplage sans contact par attraction avec lesdits deuxièmes moyens de couplage complémentaire pour, quand ils sont situés au voisinage immédiat les uns des autres, dans certaines positions relatives seulement dudit premier afficheur par rapport audit deuxième afficheur, solidariser le mouvement dudit premier afficheur et dudit deuxième afficheur, la coopération entre lesdits premiers moyens de couplage et lesdits deuxièmes moyens de couplage complémentaire créant une force ou un couple supplémentaire entre ledit premier afficheur et le deuxième afficheur de façon à amortir leur oscillation.For this purpose, the invention relates to a display combining clock display device comprising at least a first display arranged to cooperate via first transmission means with first drive or control means, and at least one second display, arranged to cooperate via second transmission means with second drive or control means, characterized in that, on the one hand, first contactless coupling means are carried by said first display or by said first transmission means, secondly second non-contact complementary coupling means are carried by said second display or by said second transmission means, and said first coupling means are arranged to cooperate in a complementary manner in non-contact coupling by attraction with said second complementary coupling means for, quan d they are located in the immediate vicinity of each other, in certain relative positions only of said first display relative to said second display, to secure the movement of said first display and said second display, the cooperation between said first coupling means and said second display means; complementary coupling creating an additional force or torque between said first display and the second display so as to damp their oscillation.

Selon une caractéristique de l'invention, lesdits premiers moyens de couplage et lesdits deuxièmes moyens de couplage complémentaire sont de nature magnétique.According to a characteristic of the invention, said first coupling means and said second complementary coupling means are of magnetic nature.

Selon une autre caractéristique de l'invention, lesdits premiers moyens de couplage et lesdits deuxièmes moyens de couplage complémentaire sont de nature électrostatique.According to another characteristic of the invention, said first coupling means and said second complementary coupling means are of electrostatic nature.

Selon une caractéristique de l'invention, lesdits premiers moyens de couplage et lesdits deuxièmes moyens de couplage complémentaire sont disposés respectivement sur ledit premier afficheur et sur ledit deuxième afficheur.According to one characteristic of the invention, said first coupling means and said second complementary coupling means are respectively disposed on said first display and on said second display.

Selon une autre caractéristique de l'invention, lesdits premiers moyens de couplage et lesdits deuxièmes moyens de couplage complémentaire sont disposés respectivement sur lesdits premiers moyens de transmission et sur lesdits deuxièmes moyens de transmission.According to another characteristic of the invention, said first coupling means and said second complementary coupling means are respectively disposed on said first transmission means and on said second transmission means.

Selon une caractéristique de l'invention, lesdits premiers moyens de transmission ou lesdits deuxièmes moyens de transmission sont débrayables sous l'effet d'une commande initiée par un moyen de pilotage, de façon à permettre l'entraînement de celui desdits premier afficheur et deuxième afficheur qui est débrayé de ses moyens d'entraînement ou de commande par celui qui est embrayé avec ses moyens d'entraînement ou de commande.According to one characteristic of the invention, said first transmission means or said second transmission means are disengageable under the effect of a command initiated by a control means, so as to allow the driving of that of said first display and second display which is disengaged from its drive means or control by the one that is engaged with its drive means or command.

Selon une caractéristique de l'invention, lesdits premiers moyens de transmission et lesdits deuxièmes moyens de transmission sont débrayables sous l'effet d'une commande initiée par un moyen de pilotage, de façon à permettre l'entraînement dudit premier afficheur ou/et dudit deuxième afficheur par des troisièmes moyens d'entraînement ou de commande ou par un champ magnétique ou par un champ électrique.According to a characteristic of the invention, said first transmission means and said second transmission means are disengageable under the effect of a command initiated by a control means, so as to allow the driving of said first display and / or said second display by third drive or control means or by a magnetic field or by an electric field.

Selon une caractéristique de l'invention, pour effectuer un alignement des affichages dudit premier afficheur et dudit deuxième afficheur, un moyen de pilotage est agencé pour décaler dans le temps, une commande d'une première action sur ledit premier afficheur par lesdits premiers moyens d'entraînement ou de commande, et une commande d'une deuxième action sur ledit deuxième afficheur par lesdits deuxièmes moyens d'entraînement ou de commande, de façon à amortir toute oscillation de l'afficheur manoeuvré le dernier, par l'effet de l'attraction réciproque desdits premiers moyens de couplage et desdits deuxièmes moyens de couplage complémentaire lors de son accostage au voisinage de l'afficheur manoeuvré le premier.According to a characteristic of the invention, to perform an alignment of the displays of said first display and said second display, a control means is arranged to shift in time, a command of a first action on said first display by said first display means. driving or control, and a command of a second action on said second display by said second drive or control means, so as to damp any oscillation of the display maneuvered last, by the effect of the reciprocal attraction of said first coupling means and said second complementary coupling means during its docking in the vicinity of the display maneuvered first.

L'invention concerne encore une pièce d'horlogerie comportant un moyen de pilotage agencé pour commander un premier afficheur par des premiers moyens d'entraînement ou de commande, et pour commander un deuxième afficheur par des deuxièmes moyens d'entraînement ou de commande, et comportant un tel dispositif d'affichage, caractérisé en ce que ledit dispositif d'affichage est commandé par ledit moyen de pilotage.The invention also relates to a timepiece comprising a control means arranged to control a first display by first drive or control means, and to control a second display by second drive or control means, and comprising such a display device, characterized in that said display device is controlled by said control means.

Description sommaire des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, en référence aux dessins annexés où :

  • la figure 1 représente, de façon schématisée, une pièce d'horlogerie comportant un dispositif d'affichage à combinaison d'afficheurs selon l'invention et un moyen de pilotage de ce dispositif ;
  • la figure 2 représente, de façon schématisée, une variante où une première roue, faisant partie de premiers moyens de transmission de mouvement à un premier afficheur ici constitué par une première aiguille porte, opposés à 180° par rapport à son axe de pivotement, deux jeux de premiers moyens de couplage, tandis qu'une deuxième roue faisant partie de deuxièmes moyens de transmission de mouvement à un deuxième afficheur ici constitué par une deuxième aiguille porte un unique jeu de deuxième moyens de couplage agencés pour coopérer de façon complémentaire en couplage avec l'un ou l'autre des deux jeux de premiers moyens de couplage de la première roue ;
  • la figure 3 représente, de façon schématisée et similaire à la figure 2, une autre variante où les premiers moyens de couplage de la première roue et les deuxièmes moyens de couplage de la deuxième roue sont agencés de façon à indexer, en position de couplage, le premier afficheur et le deuxième afficheur avec un décalage angulaire donné α.
Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings in which:
  • the figure 1 represents, schematically, a timepiece comprising a display combination display device according to the invention and a control means of this device;
  • the figure 2 represents, schematically, a variant where a first wheel, forming part of first movement transmission means to a first display here constituted by a first gate needle, opposite to its pivot axis 180 °, two sets of first coupling means, while a second wheel forming part of second movement transmission means to a second display here constituted by a second needle carries a single set of second coupling means arranged to cooperate in complementary manner in coupling with one either of the two sets of first coupling means of the first wheel;
  • the figure 3 represents, schematically and similar to the figure 2 , another variant wherein the first coupling means of the first wheel and the second coupling means of the second wheel are arranged to index, in the coupling position, the first display and the second display with a given angular offset α.

Description détaillée des modes de réalisation préférésDetailed Description of the Preferred Embodiments

L'invention concerne le domaine des instruments scientifiques, et plus particulièrement le domaine de l'horlogerie mécanique ou/et électronique.The invention relates to the field of scientific instruments, and more particularly the field of mechanical and / or electronic watchmaking.

L'invention sera plus précisément décrite pour une application préférée, mais non limitative, à une montre comportant des fonctions d'affichage autres que l'affichage de l'heure, et utilisant pour ces affichages supplémentaires tout ou partie des moyens d'affichage de l'heure. L'invention est applicable aussi bien à une montre à mouvement mécanique qu'à une montre à mouvement à quartz, ou encore une montre à technologie mixte mécanique-électronique.The invention will be more specifically described for a preferred application, but not limited to a watch having display functions other than the display of the time, and using for these additional displays all or part of the time display means. The invention is applicable to both a mechanical movement watch and a quartz movement watch, or a mechanical-electronic mixed-technology watch.

Un exemple plus particulier sera pris avec une fonction de boussole dans laquelle une aiguille des heures et une aiguille des minutes classiques sont alignées pour constituer une aiguille de boussole diamétrale,A more particular example will be taken with a compass function in which an hour hand and a conventional minute hand are aligned to form a diametral compass needle,

L'invention se propose de résoudre les problèmes et limites de l'art antérieur lors du couplage d'afficheurs :

  • l'oscillation d'au moins un des afficheurs en phase d'accostage par rapport à un autre afficheur, l'accostage étant ici entendu comme un mouvement pour rejoindre une position indexée particulière ;
  • la consommation importante d'énergie, pour réaliser l'accostage entre deux afficheurs, ou/et pour dégager l'un de l'autre ces deux afficheurs lors de leur désolidarisation, soit en marche normale, soit pour assurer une autre fonction.
The invention proposes to solve the problems and limitations of the prior art when coupling displays:
  • the oscillation of at least one of the displays in docking phase with respect to another display, the docking being here understood as a movement to reach a particular indexed position;
  • the high energy consumption, to achieve the docking between two displays, and / or to release these two displays when they are disconnected, either in normal operation or to perform another function.

Ainsi, l'invention concerne un dispositif d'affichage 100 d'horlogerie à combinaison d'afficheurs. Ce dispositif 100 comporte au moins un premier afficheur 1 agencé pour coopérer par l'intermédiaire de premiers moyens de transmission 11 avec des premiers moyens d'entraînement ou de commande 10, et au moins un deuxième afficheur 2, agencé pour coopérer par l'intermédiaire de deuxièmes moyens de transmission 21 avec des deuxièmes moyens d'entraînement ou de commande 20.Thus, the invention relates to a display device 100 clock display combination. This device 100 comprises at least a first display 1 arranged to cooperate via first transmission means 11 with first drive or control means 10, and at least a second display 2, arranged to cooperate via second transmission means 21 with second drive or control means 20.

Selon l'invention, d'une part des premiers moyens de couplage 12 sans contact sont portés par le premier afficheur 1 ou par les premiers moyens de transmission 11, et d'autre part des deuxièmes moyens de couplage complémentaire 22 sans contact sont portés par le deuxième afficheur 2 ou par les deuxièmes moyens de transmission 21.According to the invention, on the one hand first non-contact coupling means 12 are carried by the first display 1 or by the first transmission means 11, and secondly second complementary coupling means 22 without contact are carried by the second display 2 or by the second transmission means 21.

Les premiers moyens de couplage 12 sont agencés pour coopérer de façon complémentaire en couplage sans contact par attraction avec les deuxièmes moyens de couplage complémentaire 22 pour, quand ils sont situés au voisinage immédiat les uns des autres, dans certaines positions relatives seulement du premier afficheur 1 par rapport au deuxième afficheur 2, solidariser le mouvement du premier afficheur 1 et du deuxième afficheur 2.The first coupling means 12 are arranged to cooperate in complementary manner in contactless coupling by attraction with the second complementary coupling means 22, when they are located in the immediate vicinity of each other, in certain relative positions only of the first display 1 relative to the second display 2, secure the movement of the first display 1 and the second display 2.

La coopération entre les premiers moyens de couplage 12 et les deuxièmes moyens de couplage complémentaire 22 crée une force ou un couple supplémentaire entre le premier afficheur 1 et le deuxième afficheur 2 de façon à amortir l'oscillation ou/et la vibration de ce premier afficheur 1 ou/et de ce deuxième afficheur 3.The cooperation between the first coupling means 12 and the second complementary coupling means 22 creates an additional force or torque between the first display 1 and the second display 2 so as to damp the oscillation or / and the vibration of this first display 1 and / or this second display 3.

Naturellement l'invention peut s'étendre à un nombre d'afficheur supérieur à deux, par exemple trois aiguilles concentriques d'une montre, ou similaire. L'exemple décrit en détail ici de la coopération de deux afficheurs n'est nullement limitatif.Naturally the invention may extend to a number of displays greater than two, for example three concentric hands of a watch, or the like. The example described in detail here of the cooperation of two displays is not limiting.

L'oscillation d'un afficheur, notamment d'une aiguille d'une pièce d'horlogerie ou d'une montre, commandé par un moteur électrique, est causée, d'une part par l'inertie dans le rotor de ce moteur, qui oscille après une impulsion de pilotage, et, d'autre part, par le jeu dans les rouages, l'inertie de l'afficheur ou aiguille et des rouages les faisant osciller dans la limite du jeu des rouages.The oscillation of a display, in particular of a hand of a timepiece or a watch, controlled by an electric motor, is caused, on the one hand by the inertia in the rotor of this motor, which oscillates after a driving impulse, and, on the other hand, by the play in the wheels, the inertia of the display or needle and the wheels making them oscillate within the limits of the play of the wheels.

L'installation d'un couplage selon l'invention, notamment magnétique ou électrostatique, permet d'introduire momentanément, et dans certaines positions seulement, une force ou un couple supplémentaire, qui s'apparente à un frottement de par l'effet produit, ce qui permet d'amortir l'oscillation.The installation of a coupling according to the invention, in particular magnetic or electrostatic, makes it possible to introduce momentarily, and in certain positions only, an additional force or torque, which is similar to a friction due to the effect produced, which makes it possible to damp the oscillation.

La qualité d'amortissement dépend du réglage du couplage, mais celui-ci est toujours présent. En somme, c'est uniquement dans des positions particulières relatives des afficheurs ou aiguilles qu'on crée cet amortissement.The damping quality depends on the setting of the coupling, but this is always present. In short, it is only in particular relative positions of displays or needles that this depreciation is created.

Le fait que l'amortissement ne soit, ainsi, pas permanent, évite de pénaliser en termes de consommation du moteur et du rendement du moteur.The fact that the damping is thus not permanent, avoids penalizing in terms of engine consumption and engine performance.

On entend par solidariser le fait de réaliser un couplage entre le premier afficheur 1 et le deuxième afficheur 2. Ce couplage comporte, selon l'invention, un amortissement de celui des deux afficheurs qui rejoint l'autre dans une position indexée requise. Cet amortissement est obtenu précisément grâce à la mise en oeuvre des moyens de couplage sans contact.One understands by solidariser the fact of making a coupling between the first display 1 and the second display 2. This coupling comprises, according to the invention, a damping of that of the two displays which joins the other in a required indexed position. This damping is obtained precisely thanks to the implementation of the contactless coupling means.

Dans un premier mode de réalisation de l'invention, les premiers moyens de couplage 12 et les deuxièmes moyens de couplage complémentaire 22 sont de nature magnétique.In a first embodiment of the invention, the first coupling means 12 and the second complementary coupling means 22 are magnetic in nature.

Dans un autre mode de réalisation de l'invention, les premiers moyens de couplage 12 et les deuxièmes moyens de couplage complémentaire 22 sont de nature électrostatique.In another embodiment of the invention, the first coupling means 12 and the second complementary coupling means 22 are of electrostatic nature.

Les premiers moyens de couplage 12 et les deuxièmes moyens de couplage complémentaire 22 peuvent être disposés de différentes façons sur la chaîne cinématique de chacun des afficheurs.The first coupling means 12 and the second complementary coupling means 22 may be arranged in different ways on the kinematic chain of each of the displays.

Notamment, dans une première variante, les premiers moyens de couplage 12 et les deuxièmes moyens de couplage complémentaire 22 sont disposés respectivement sur le premier afficheur 1 et sur le deuxième afficheur 2. Dans une autre variante, les premiers moyens de couplage 12 et les deuxièmes moyens de couplage complémentaire 22 sont disposés respectivement sur les premiers moyens de transmission 11 et sur les deuxièmes moyens de transmission 21. Ces variantes ne sont pas limitatives, et l'on peut aussi avoir les premiers moyens de couplage 12 disposés sur le premier afficheur 1 et les deuxièmes moyens de couplage complémentaire 22 disposés sur les deuxièmes moyens de transmission 21, ou réciproquement, ou autre.In particular, in a first variant, the first coupling means 12 and the second complementary coupling means 22 are respectively disposed on the first display 1 and on the second display 2. In another variant, the first coupling means 12 and the second complementary coupling means 22 are arranged respectively on the first transmission means 11 and on the second transmission means 21. These variants are not limiting, and one can also have the first coupling means 12 arranged on the first display 1 and the second complementary coupling means 22 arranged on the second transmission means 21, or vice versa, or the like.

Dans un mode particulier de réalisation, les premiers moyens de transmission 11 ou les deuxièmes moyens de transmission 21 sont débrayables sous l'effet d'une commande initiée par un moyen de pilotage 30, de façon à permettre l'entraînement de celui des premier afficheur 1 et deuxième afficheur 2, qui est débrayé de ses moyens d'entraînement ou de commande, par celui qui est embrayé avec ses moyens d'entraînement ou de commande.In a particular embodiment, the first transmission means 11 or the second transmission means 21 are disengageable under the effect of a command initiated by a control means 30, so as to allow the drive of the first display 1 and second display 2, which is disengaged from its drive means or control, by the one which is engaged with its drive means or control.

Dans un autre mode particulier de réalisation, les premiers moyens de transmission 11 et les deuxièmes moyens de transmission 21 sont débrayables sous l'effet d'une commande initiée par un moyen de pilotage 30, de façon à permettre l'entraînement du premier afficheur 1 ou/et du deuxième afficheur 2 par des troisièmes moyens d'entraînement ou de commande ou par un champ magnétique ou par un champ électrique. Cet entraînement peut, encore, être obtenu sous l'effet du traitement d'un signal émis par un capteur de mesure ou de constat d'état d'une grandeur physique, par exemple un capteur de radioactivité, un capteur barométrique, un capteur d'éclairage, ou autre.In another particular embodiment, the first transmission means 11 and the second transmission means 21 are disengageable under the effect of a control initiated by a control means 30, so as to allow the driving of the first display 1 or / and the second display 2 by third drive or control means or by a magnetic field or by an electric field. This training can, again, be obtained under the effect of the processing of a signal emitted by a measurement sensor or of a status report of a physical quantity, for example a radioactivity sensor, a barometric sensor, a sensor of a lighting, or other.

De préférence, la manoeuvre de sortie de la position de couplage est effectuée avec une impulsion imprimée, directement ou indirectement, à au moins l'un des deux afficheurs par rapport à l'autre. Dans le cas d'une pièce d'horlogerie électronique cette impulsion peut facilement résulter d'un pic de courant ou de tension sur un moteur d'entraînement, ou similaire. Dans le cas d'une pièce d'horlogerie à mouvement mécanique, l'impulsion peut être réalisée par une came ou une rampe.Preferably, the output maneuver of the coupling position is performed with a printed pulse, directly or indirectly, at least one of the two displays relative to the other. In the case of an electronic timepiece this pulse can easily result from a peak current or voltage on a drive motor, or the like. In the case of a timepiece with mechanical movement, the pulse can be achieved by a cam or a ramp.

Il convient de noter que, dans le cas d'une montre, cette manoeuvre de sortie n'intervient pas seulement en sortie de la position de couplage, mais aussi à tout moment où, du fait du fonctionnement normal du mouvement, le premier afficheur 1 et le deuxième afficheur 2 sont dans la position d'indexation particulière l'un par rapport à l'autre.It should be noted that, in the case of a watch, this output maneuver not only intervenes at the output of the coupling position, but also at any moment when, due to the normal operation of the movement, the first display 1 and the second display 2 are in the particular indexing position relative to each other.

Dans un exemple de fonction de boussole où une aiguille de boussole est constituée par la combinaison en indexage d'alignement à 180° d'une aiguille des heures et d'une aiguille des minutes, les premiers moyens de couplage 12 et les deuxièmes moyens de couplage complémentaire 22 viennent en coopération chaque fois que ces deux aiguilles sont en position d'alignement, c'est-à-dire à chaque fois que la fonction de boussole est mise en oeuvre, amis aussi à chaque fois que la marche normale du mouvement les présente dans l'alignement l'une de l'autre, ce qui se produit vingt-quatre fois par jour pour un cadran d'affichage sur douze heures. Pour éviter de surdimensionner les moyens d'entraînement des afficheurs afin de surmonter la force ou le couple d'attraction exercé les uns sur les autres par les premiers moyens de couplage 12 et les deuxièmes moyens de couplage complémentaire 22, il est alors avantageux d'effectuer une telle impulsion dans chacune des ces circonstances.In one example of a compass function where a compass needle is constituted by the 180 ° alignment indexing combination of an hour hand and a minute hand, the first coupling means 12 and the second means of complementary coupling 22 come into cooperation each time these two needles are in alignment position, that is to say each time the compass function is implemented, friends also every time the normal movement of the movement presents them in alignment with each other, which happens twenty-four times a day for a twelve-hour display dial. To avoid oversizing the drive means of the displays in order to overcome the force or the attractive torque exerted on each other by the first coupling means 12 and the second complementary coupling means 22, it is then advantageous to perform such an impulse in each of these circumstances.

Les premiers moyens d'entraînement ou de commande 10, et des deuxièmes moyens d'entraînement ou de commande 20 peuvent aussi fonctionner en mouvement continu, ils nécessitent alors un dimensionnement leur permettant de vaincre, en marche normal, la force ou le couple d'attraction, tandis que l'emploi d'une fonction de débrayage de l'un des deux afficheurs en fin de manoeuvre d'accostage permet à la force ou au couple d'attraction de prendre l'ascendant sur l'effort d'inertie, de façon à réaliser un indexage amorti, et sans aucune vibration.The first drive or control means 10, and the second drive or control means 20 can also operate in continuous movement, they then require a dimensioning allowing them to overcome, in normal operation, the force or the torque of attraction, while the use of a disengagement function of one of the two displays at the end of the docking maneuver allows the force or the attraction torque to gain ascendancy over the inertial force, in order to perform a damped indexing, and without any vibration.

L'indexage entre les afficheurs peut être multiple, la figure 2 illustre ainsi un cas où une roue des premiers moyens de transmission 11 porte, opposés à 180° par rapport à son axe de pivotement, des premiers moyens de couplage 12 A, et d'autres premiers moyens de couplage 12 B, tandis qu'une roue des deuxièmes moyens de transmission 21 porte un unique deuxième moyens de couplage 22. Cette configuration permet ainsi, selon les ordres donnés par les moyens de pilotage 30 aux premiers moyens d'entraînement ou de commande 10, et aux deuxièmes moyens d'entraînement ou de commande 20, d'utiliser les afficheurs 1 et 2 en alignement ou en superposition, selon la fonction utilisée. La figure 3 illustre un cas où les premiers moyens de couplage 12 et les deuxièmes moyens de couplage 22 sont agencés de façon à indexer le premier afficheur 1 et le deuxième afficheur 2 avec un décalage angulaire donné α.The indexing between the displays can be multiple, the figure 2 illustrates a case where a wheel of the first transmission means 11 carries, opposed to 180 ° relative to its axis of pivoting, first coupling means 12A, and other first coupling means 12B, while a wheel of the second transmission means 21 carries a single second coupling means 22. This configuration allows thus, according to the commands given by the control means 30 to the first drive or control means 10, and to the second drive or control means 20, to use the displays 1 and 2 in alignment or in superposition, according to the function used. The figure 3 illustrates a case where the first coupling means 12 and the second coupling means 22 are arranged so as to index the first display 1 and the second display 2 with a given angular offset α.

Dans un mode particulier de réalisation, avantageusement, pour effectuer un alignement des affichages du premier afficheur 1 et du deuxième afficheur 2, un moyen de pilotage 30 est agencé pour décaler dans le temps, une commande d'une première action sur le premier afficheur 1 par les premiers moyens d'entraînement ou de commande 10, et une commande d'une deuxième action sur le deuxième afficheur 2 par les deuxièmes moyens d'entraînement ou de commande 20. Ce décalage temporel est effectué de façon à amortir toute oscillation de l'afficheur manoeuvré le dernier, par l'effet de l'attraction réciproque des premiers moyens de couplage 12 et des deuxièmes moyens de couplage complémentaire 22 lors de son accostage au voisinage de l'afficheur manoeuvré le premier.In a particular embodiment, advantageously, to perform an alignment of the displays of the first display 1 and the second display 2, a control means 30 is arranged to shift in time, a command of a first action on the first display 1 by the first drive or control means 10, and control of a second action on the second display 2 by the second drive or control means 20. This time shift is performed so as to damp any oscillation of the last operated display, by the effect of the mutual attraction of the first coupling means 12 and the second complementary coupling means 22 during its docking in the vicinity of the first maneuvered display.

Pour revenir à un exemple particulier, celui d'un affichage d'un mode boussole, réalisé notamment sur une montre à mouvement à quartz, en particulier de type « T-Touch » ® de TISSOT S.A., le premier afficheur 1est constitué par l'aiguille des heures, et le deuxième afficheur 2 est constitué par l'aiguille des minutes. Ces deux aiguilles changent de fonction lors du passage au mode boussole, lors duquel elles sont alignées l'une à l'autre, puis orientées face au nord magnétique. Le but de l'invention est d'amortir rapidement l'oscillation de l'aiguille à chaque fin de pas, en mode boussole. Comme la durée de fonctionnement en mode boussole ne représente qu'une part très faible de la durée de fonctionnement de la montre, la solution offerte par l'invention ne doit pas pénaliser la consommation en marche normale. La configuration d'alignement des deux aiguilles, outre le mode boussole, se produit 24 fois par jour en marche normale pour l'affichage normal de l'heure. Le pilotage des moteurs d'entraînement des deux aiguilles se fait l'un après l'autre. Quand l'aiguille d'heure se déplace l'aiguille de minute reste fixe, puis quand l'aiguille d'heure a terminé son pas, c'est l'aiguille de minute qui se déplace tandis que l'aiguille d'heure reste fixe. L'amortissement de la fin du pas de l'aiguille est réalisé par le couplage, de préférence magnétique, ou électrostatique, entre la roue d'heure et la roue de minute. Quand l'aiguille de minute termine son pas, elle est retenu par l'aiguille d'heure qui est restée fixe, et inversement quand l'aiguille d'heure se déplace. Le couplage magnétique peut être réalisé par aimant sur la roue de minute et une goupille magnétique sur la roue d'heure, ou bien directement au niveau des aiguilles. Quand l'aiguille de minute termine son pas, le couplage magnétique avec la roue d'heure amortit immédiatement son oscillation. Un couplage mécanique peut être réalisé de la même façon avec des éléments ressorts sur les roues ou encore mécanique, cette dernière solution est toutefois moins avantageuse que les solutions magnétique et électrostatique en termes de consommation d'énergie. La solution ainsi mise en oeuvre par l'invention est réalisée au niveau des composants mécaniques de la pièce d'horlogerie, et n'impacte pas le driver moteur. La très faible surconsommation engendrée par cette solution n'a lieu qu'en mode boussole et 24 fois/jour sur quelques impulsions rotor.To return to a particular example, that of a display of a compass mode, made in particular on a quartz movement watch, in particular of "T-Touch" ® type of TISSOT SA, the first display 1 is constituted by the hour hand, and the second display 2 is constituted by the minute hand. These two needles change function when switching to compass mode, when they are aligned with each other and then facing north magnetic. The object of the invention is to rapidly dampen the oscillation of the needle at each end of step, in compass mode. Since the duration of operation in compass mode represents only a very small part of the operating time of the watch, the solution offered by the invention must not penalize consumption in normal operation. The alignment configuration of both hands, in addition to the compass mode, occurs 24 times a day in normal operation for normal time display. Engine control both needles are done one after the other. When the hour hand moves the minute hand remains fixed, then when the hour hand has finished its step, it is the minute hand that moves while the hour hand remains fixed. The damping of the end of the pitch of the needle is achieved by the coupling, preferably magnetic, or electrostatic, between the hour wheel and the minute wheel. When the minute hand finishes its step, it is held by the hour hand which has remained fixed, and vice versa when the hour hand moves. The magnetic coupling can be achieved by magnet on the minute wheel and a magnetic pin on the hour wheel, or directly at the level of the needles. When the minute hand ends its step, the magnetic coupling with the hour wheel immediately dampens its oscillation. A mechanical coupling can be achieved in the same way with spring elements on the wheels or mechanical, the latter solution is however less advantageous than the magnetic and electrostatic solutions in terms of energy consumption. The solution thus implemented by the invention is made at the mechanical components of the timepiece, and does not impact the driver. The very low over-consumption generated by this solution only takes place in compass mode and 24 times / day on a few rotor impulses.

Dans la version préférée où les afficheurs ou aiguilles sont entraînés par un moteur électrique, on dimensionne le couple de couplage, résultant de la coopération des premiers moyens de couplage 12 et des deuxièmes moyens de couplage 22, de façon à ce qu'il reste inférieur au couple de positionnement délivré par le moteur d'entraînement d'un des afficheurs, rapporté au niveau de l'axe de pivotement de cet afficheur. Dans le cas préféré où l'un (statique) des afficheurs est immobilisé avant l'autre (mobile), comme notamment dans l'exemple de la boussole ci-dessus où on coupe toujours un des deux moteurs pendant qu'on active l'autre, l'afficheur statique n'est ainsi pas entraîné par le mouvement de l'afficheur mobile.In the preferred version where the displays or hands are driven by an electric motor, the coupling torque is dimensioned, resulting from the cooperation of the first coupling means 12 and the second coupling means 22, so that it remains lower to the positioning torque delivered by the drive motor of one of the displays, reported at the pivot axis of this display. In the preferred case where one (static) display is immobilized before the other (mobile), as in particular in the example of the compass above where one always cuts one of the two engines while one activates the other, the static display is thus not driven by the movement of the mobile display.

De façon préférée, le moyen de pilotage 30 comporte un software qui bloque le moteur de l'afficheur statique en réinjectant du courant dans la bobine.Preferably, the control means 30 comprises software that blocks the motor of the static display by re-injecting current into the coil.

On comprend que l'afficheur mobile peut nécessiter plus de courant pour pouvoir effectuer son pas, mais l'impact sur la consommation reste faible, car, dans le cas préféré des aiguilles d'une montre, l'alignement des aiguilles se fait 24 fois par jour seulement.It is understood that the mobile display may require more current to be able to take its step, but the impact on consumption remains low, because in the preferred case of the needles of a clock, the alignment of the needles is done 24 times per day only.

Dans le cas où on souhaite coupler les deux afficheurs ou aiguilles, et les entraîner de façon couplée, il est nécessaire de débrayer un des deux moteurs, ou de rendre le couple de positionnement qu'il exerce, rapporté à l'axe de l'afficheur, inférieur au couple de couplage, par action du moyen de pilotage 30. celui-ci peu alors, pour sortir du mode couplage, injecter du courant dans la bobine du moteur mené, afin de bloquer l'afficheur correspondant, ainsi son couple, rapporté à l'axe de l'afficheur, redevient supérieur au couple de couplage.In the case where it is desired to couple the two displays or hands and to drive them in a coupled manner, it is necessary to disengage one of the two motors, or to make the positioning torque that it exerts, related to the axis of the display, less than the coupling torque, by action of the control means 30. the latter can then, to exit the coupling mode, inject current into the motor driven coil, in order to block the corresponding display, and its torque, relative to the axis of the display, becomes greater than the coupling torque.

L'invention concerne encore une pièce d'horlogerie 1000 comportant un moyen de pilotage 30 agencé pour commander un premier afficheur 1 par des premiers moyens d'entraînement ou de commande 10, et pour commander un deuxième afficheur 2 par des deuxièmes moyens d'entraînement ou de commande 20, et comportant un tel dispositif d'affichage 100, commandé par ce moyen de pilotage 30.The invention also relates to a timepiece 1000 comprising a control means 30 arranged to control a first display 1 by first drive or control means 10, and to control a second display 2 by second drive means or control 20, and including such a display device 100, controlled by this control means 30.

Claims (9)

Dispositif d'affichage (100) d'horlogerie à combinaison d'afficheurs comportant au moins un premier afficheur (1) agencé pour coopérer par l'intermédiaire de premiers moyens de transmission (11) avec des premiers moyens d'entraînement ou de commande (10), et au moins un deuxième afficheur (2), agencé pour coopérer par l'intermédiaire de deuxièmes moyens de transmission (21) avec des deuxièmes moyens d'entraînement ou de commande (20), caractérisé en ce que, d'une part des premiers moyens de couplage (12) sans contact sont portés par ledit premier afficheur (1) ou par lesdits premiers moyens de transmission (11), d'autre part des deuxièmes moyens de couplage complémentaire (22) sans contact sont portés par ledit deuxième afficheur (2) ou par lesdits deuxièmes moyens de transmission (21), et que lesdits premiers moyens de couplage (12) sont agencés pour coopérer de façon complémentaire en couplage sans contact par attraction avec lesdits deuxièmes moyens de couplage complémentaire (22) pour, quand ils sont situés au voisinage immédiat les uns des autres dans certaines positions relatives seulement dudit premier afficheur (1) par rapport audit deuxième afficheur (2), solidariser le mouvement dudit premier afficheur (1) et dudit deuxième afficheur (2), la coopération entre lesdits premiers moyens de couplage (12) et lesdits deuxièmes moyens de couplage complémentaire (22) créant une force ou un couple supplémentaire entre ledit premier afficheur (1) et le deuxième afficheur (2) de façon à amortir leur oscillation.A combination display display device (100) comprising at least a first display (1) arranged to cooperate via first transmission means (11) with first drive or control means ( 10), and at least one second display (2), arranged to cooperate via second transmission means (21) with second drive or control means (20), characterized in that a part of the first coupling means (12) without contact are carried by said first display (1) or by said first transmission means (11), secondly second complementary coupling means (22) without contact are carried by said second display (2) or by said second transmission means (21), and that said first coupling means (12) are arranged to cooperate in complementary manner in contactless coupling by attraction with said second means of stroke complementary step (22) for, when they are located in the immediate vicinity of each other in certain relative positions only of said first display (1) relative to said second display (2), to secure the movement of said first display (1) and said second display (2), the cooperation between said first coupling means (12) and said second complementary coupling means (22) creating an additional force or torque between said first display (1) and the second display (2) so as to dampen their oscillation. Dispositif d'affichage (100) selon la revendication 1, caractérisé en ce que lesdits premiers moyens de couplage (12) et lesdits deuxièmes moyens de couplage complémentaire (22) sont de nature magnétique.Display device (100) according to claim 1, characterized in that said first coupling means (12) and said second complementary coupling means (22) are magnetic in nature. Dispositif d'affichage (100) selon la revendication 1, caractérisé en ce que lesdits premiers moyens de couplage (12) et lesdits deuxièmes moyens de couplage complémentaire (22) sont de nature électrostatique.Display device (100) according to claim 1, characterized in that said first coupling means (12) and said second complementary coupling means (22) are of electrostatic nature. Dispositif d'affichage (100) selon l'une des revendications précédentes, caractérisé en ce que lesdits premiers moyens de couplage (12) et lesdits deuxièmes moyens de couplage complémentaire (22) sont disposés respectivement sur ledit premier afficheur (1) et sur ledit deuxième afficheur (2).Display device (100) according to one of the preceding claims, characterized in that said first coupling means (12) and said second complementary coupling means (22) are respectively disposed on said first display (1) and on said second display (2). Dispositif d'affichage (100) selon l'une des revendications précédentes, caractérisé en ce que lesdits premiers moyens de couplage (12) et lesdits deuxièmes moyens de couplage complémentaire (22) sont disposés respectivement sur lesdits premiers moyens de transmission (11) et sur lesdits deuxièmes moyens de transmission (21).Display device (100) according to one of the preceding claims, characterized in that said first coupling means (12) and said second complementary coupling means (22) are respectively disposed on said first transmission means (11) and on said second transmission means (21). Dispositif d'affichage (100) selon l'une des revendications précédentes, caractérisé en ce que lesdits premiers moyens de transmission (11) ou lesdits deuxièmes moyens de transmission (21) sont débrayables sous l'effet d'une commande initiée par un moyen de pilotage (30), de façon à permettre l'entraînement de celui desdits premier afficheur (1) et deuxième afficheur (2) qui est débrayé de ses moyens d'entraînement ou de commande par celui qui est embrayé avec ses moyens d'entraînement ou de commande.Display device (100) according to one of the preceding claims, characterized in that said first transmission means (11) or said second transmission means (21) are disengageable under the effect of a command initiated by a means driving (30), so as to allow the drive of that of said first display (1) and second display (2) which is disengaged from its drive means or control by the one engaged with its drive means or order. Dispositif d'affichage (100) selon l'une des revendications précédentes, caractérisé en ce que lesdits premiers moyens de transmission (11) et lesdits deuxièmes moyens de transmission (21) sont débrayables sous l'effet d'une commande initiée par un moyen de pilotage (30), de façon à permettre l'entraînement dudit premier afficheur (1) ou/et dudit deuxième afficheur (2) par des troisièmes moyens d'entraînement ou de commande ou par un champ magnétique ou par un champ électrique.Display device (100) according to one of the preceding claims, characterized in that said first transmission means (11) and said second transmission means (21) are disengageable under the effect of a command initiated by a means for driving said first display (1) and / or said second display (2) by third drive or control means or by a magnetic field or by an electric field. Dispositif d'affichage (100) selon l'une des revendications précédentes, caractérisé en ce que, pour effectuer un alignement des affichages dudit premier afficheur (1) et dudit deuxième afficheur (2), un moyen de pilotage (30) est agencé pour décaler dans le temps, une commande d'une première action sur ledit premier afficheur (1) par lesdits premiers moyens d'entraînement ou de commande (10), et une commande d'une deuxième action sur ledit deuxième afficheur (2) par lesdits deuxièmes moyens d'entraînement ou de commande (20), de façon à amortir toute oscillation de l'afficheur manoeuvré le dernier, par l'effet de l'attraction réciproque desdits premiers moyens de couplage (12) et desdits deuxièmes moyens de couplage complémentaire (22) lors de son accostage au voisinage de l'afficheur manoeuvré le premier.Display device (100) according to one of the preceding claims, characterized in that , to align the displays of said first display (1) and said second display (2), a control means (30) is arranged for staggering in time a command of a first action on said first display (1) by said first drive or control means (10), and control of a second action on said second display (2) by said second driving or control means (20), so as to damp any oscillation of the last actuated display, by the effect of the mutual attraction of said first coupling means (12) and said second complementary coupling means (22) when docking in the vicinity of the first maneuvered display. Pièce d'horlogerie (1000) comportant un moyen de pilotage (30) agencé pour commander un premier afficheur (1) par des premiers moyens d'entraînement ou de commande (10), et pour commander un deuxième afficheur (2) par des deuxièmes moyens d'entraînement ou de commande (20), et comportant un dispositif d'affichage (100) selon l'une des revendications précédentes, caractérisé en ce que ledit dispositif d'affichage (100) est commandé par ledit moyen de pilotage (30).Timepiece (1000) comprising a control means (30) arranged to control a first display (1) by first drive or control means (10), and to control a second display (2) by second drive or control means (20), and having a display device (100) according to one of the preceding claims, characterized in that said display device (100) is controlled by said control means (30).
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EP11192298.5A EP2602674B1 (en) 2011-12-07 2011-12-07 Timepiece display device with combined display means
US13/705,798 US8750079B2 (en) 2011-12-07 2012-12-05 Display device with a combination of display members
JP2012267862A JP5411982B2 (en) 2011-12-07 2012-12-07 Display device having combination of display members
KR1020120142370A KR101445455B1 (en) 2011-12-07 2012-12-07 Display device with a combination of display members
CN201210525728.7A CN103149829B (en) 2011-12-07 2012-12-07 Timepiece display device with combined display means
HK13113722.3A HK1186255A1 (en) 2011-12-07 2013-12-10 Display device with a combination of display members

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KR20130064038A (en) 2013-06-17
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EP2602674B1 (en) 2014-06-25
KR101445455B1 (en) 2014-09-26
US8750079B2 (en) 2014-06-10
JP5411982B2 (en) 2014-02-12
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HK1186255A1 (en) 2014-03-07
JP2013120188A (en) 2013-06-17

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