EP1050784A1 - Timepiece with means for determining the angular position of analog display coaxial indicators - Google Patents

Timepiece with means for determining the angular position of analog display coaxial indicators Download PDF

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Publication number
EP1050784A1
EP1050784A1 EP99108958A EP99108958A EP1050784A1 EP 1050784 A1 EP1050784 A1 EP 1050784A1 EP 99108958 A EP99108958 A EP 99108958A EP 99108958 A EP99108958 A EP 99108958A EP 1050784 A1 EP1050784 A1 EP 1050784A1
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EP
European Patent Office
Prior art keywords
mobile
plate
timepiece according
timepiece
sensor
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Granted
Application number
EP99108958A
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German (de)
French (fr)
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EP1050784B1 (en
Inventor
Jean-Jacques Born
Pierre-André Farine
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Asulab AG
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Asulab AG
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Priority to DE69942303T priority Critical patent/DE69942303D1/en
Priority to EP19990108958 priority patent/EP1050784B1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
    • G04D7/12—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard
    • G04D7/1207—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring
    • 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
    • G04C3/008—Mounting, assembling of components
    • 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 present invention relates to a timepiece comprising a watch movement, provided with an analog display comprising at minus two rotary display indicators secured to coaxial guns respective and of means for locating the angular position of these indicators.
  • the invention relates identification of the angular position of each indicator by a plate rotating superimposed on a magnetic or capacitive detector.
  • the object of the invention is to provide a timepiece of the type defined in preamble, and in which several coaxial display indicators can be associated with means capable of providing information to their respective angular positions, while solving the problems that come to be stated.
  • the subject of the invention is therefore a timepiece as defined by the features of claim 1.
  • the presence of several sensors, associated with as many coaxial indicators does not increase the height of the timepiece, which remains essentially the same as that which we would have with identification by a single indicator rotating on a given axis. Moreover, he becomes possible to arrange the position marking plates at a first level and the sensors on a second level, so the markup in height possibly necessary for the identification of the angular positions of coaxial indicators remains that of a single sensor.
  • sensors located on the same level preferably, all of the connections can also be carried out at the same level, i.e. from the base of the sensors.
  • FIGS 1 and 2 represent a first embodiment of the timepiece according to the invention.
  • She includes 1 minute cannon and 2 hour cannon mounted coaxially, in a conventional manner, on a common post 3 of axis 4.
  • Des 5 and 6 hour rotary indicators are respectively hunted on cannons 1 and 2.
  • indicators 5 and 6 can also indicate other quantities such as the second, timing data, date, etc. he it is also conceivable to provide, in a coaxial position, more than two display indicators, all provided with means for identifying their angular position designed according to the invention.
  • the tree 3 is inserted in a bridge 7 of the movement of the timepiece, this bridge being here applied against a wafer 8 which is preferably an insulating substrate capable of advantageously carry a printed circuit connecting the components together electrical and electronic parts of the timepiece.
  • a wafer 8 which is preferably an insulating substrate capable of advantageously carry a printed circuit connecting the components together electrical and electronic parts of the timepiece.
  • Its timepiece circuit (not shown) can optionally be arranged above.
  • the minute cannon 1 carries a first plate 9 for locating its angular position arranged perpendicular to the axis 4.
  • this tray includes four openings 10, distributed with a angular offset of 90 ° between them. As seen in Figure 2 these openings 10 are separated by branches of material 9a. So the cannon minutes 1 and its associated tray 9 together form a first mobile position marker, which has been assigned the reference MR1 and which contributes when obtaining position information from the minute indicator 5.
  • This timepiece also includes a first sensor 11 of magnetic or capacitive type. It is placed near the plate 9 and includes a detection element 12. The latter is placed below the platform 9 directly above an area in which the openings 10 and the material branches 9a of this plate separating the openings to each other. The alternating presence of these openings 10 and of these branches of material 9a above the detection element 12, is capable of causing the production of a signal representative of the position angular of the latter in particular for the presence of a wider arm.
  • the detection element 12 is a induction coil sensitive to variations in electromagnetic properties of the plate 9, when it rotates around the axis 4. It can therefore be seen that the plate 9 has at least one discontinuity of material capable of being detected by the sensor 11, during the rotation of the mobile MR1 relative to said sensor 11, to provide a first measurement signal representative of a angular position of the display indicator 5.
  • the timepiece according to the invention also comprises a second position locating mobile MR2 mounted away from mobile MR1.
  • This the latter comprises a journal 13 mounted rotatably, in the bridge 7 and in a plate 14 of the timepiece, around an axis 15.
  • the 2 hour cannon meshes through its plate 16, with a drive plate 17 riveted on the pin 13 and, therefore, attached to the hour indicator in rotation 6.
  • the gear ratio between the plate 16 driven by the 2 hour cannon and the plate drive 17 is preferably 1: 1.
  • a second plate 18 for locating angular position is also riveted on the pin 13 in a position perpendicular to the axis 15.
  • this plate 18 has a shape identical to that of the plate 9, with the exception of the toothing, and therefore has separate openings 19 by radial branches of material 18a. Note however that the identity of shapes and diameters of the two plates 9 and 18 is not an imperative.
  • the second position marker MR2 thus contributes to obtaining position information from the hour indicator 6 in association with a second sensor 20 placed near the second plate 18 and comprising a detection element 21.
  • the latter is placed in below the plate 18, plumb with an area in which evolve alternately the openings 19 and the branches of material 18a separating the openings of each other.
  • the alternate passage of these openings 19 and of these branches of material 18a above the sensor 20 is capable to cause the production by said sensor 20 of a signal representative of the angular position of the mobile MR2 and, consequently, of the hour indicator 6.
  • the detection element is a coil induction sensitive to electromagnetic variations of the plate 18, when turns around the axis 15. It can therefore be seen that the second plate 18 contains at least one discontinuity of material capable of being detected by the second sensor 20 when the mobile MR2 rotates relative to this sensor, to provide a second measurement signal representative of a position angle of the second display indicator 6.
  • the sensors 11 and 20 can be inductive (as shown here) or type capacitive.
  • the plates 9 and 18 are shaped in such a way and made in a material such that their movements relative to the sensors generate respectively variations of at least one parameter of these, these variations giving rise to the formation of the aforementioned position signals.
  • This general formulation implies that many possibilities of realization tray-sensor pairs are possible within the scope of this invention, these possibilities resulting for the skilled person in particular from aforementioned patent applications. The description of these many variants is therefore not repeated here.
  • Each of the detection elements 12 and 21 is mounted on a substrate 22 and 23 also carrying, for example in the form of an integrated circuit, the means for electronic processing of the signal supplied by the detection element 12 or 21 associated.
  • the substrates 22 and 23 are made of a material semiconductor. If, as in the embodiment shown in the Figures 1 and 2, the detection elements 12 and 21 are flat coils, they are preferably formed by metallic deposition on their substrates respectively 22, 23. In addition, each of them may include wires of connection 24 leading to another arranged electronic operating circuit in the timepiece, including in particular the timepiece circuit. Glue drops 25 can partially or preferably coat totally these sons.
  • the position marking plates 9 and 18 and their associated sensors 12 and 21 are respectively arranged in two superimposed planes parallel to the substrate 8.
  • the height occupied by the set of two plate-sensor pairs is limited to that of only one of these couples as opposed to a layout where the two sets would superimposed along axis 4, in particular with a sensor arranged between the plates 9 and 16.
  • the mobile MR2 in addition to its position tracking function, a force transmission function to the associated indicator 6 within the framework of the watch movement proper.
  • the plate 18 of the mobile MR2 can be part of a work engine gear train watchmaking (or be driven directly by a motor) to ensure the transmission of the movement towards the plate 16 of the hour canon 2.
  • the plate 18 has teeth.
  • the force transmission can be provided by the drive plate 17 of the mobile MR2 making, in this case, part of the gear train of the timepiece. We can then dispense a toothing on the plate 18.
  • the plate 16 of the hour canon 2 can be driven directly by a motor gear train (or by a motor) of the timepiece and in turn drive the mobile MR2 by via tray 17.
  • the mobile MR2 is a mobile additional dedicated only to locating the angular position of indicator 6.
  • a driving force is applied to the mobile MR1 by the plate 9, this comprises a toothing 27.
  • the barrel 1 minutes can be driven for example at a pinion located above or below the plate 9.
  • FIGS. 3 and 4 show another embodiment of the part of watchmaking according to the invention differing from that of FIGS. 1 and 2 only by the arrangement of the detection elements and their associated circuits. Others components of the part will therefore not be described again and they bear the same references as in FIGS. 1 and 2.
  • sensors 11A and 20A include detection elements 12A and 21A which, in this example, are also in the form of flat inductive coils. But here the electronic circuits of the two sensors 11A and 20A are provided in the same semiconductor substrate 28. From these two circuits preferably have a common part integrated in this substrate. In this case, it may also be advantageous to integrate into the substrate 22 all of the electronic components of the timepiece, including the timepiece circuit.
  • the substrate 28 extends, by a part end carrying the detection elements 12A and 21A, between axes 4 and 15 of the mobiles MR1 and MR2, in the variant of FIG. 5, there is provided a substrate 29 extending through a corner portion 29a between axes 4 and 15, in thus being placed at an angle.
  • FIG. 6 shows a substrate 30 placed entirely on the same side compared to axes 4 and 15, this variant being expensive given the surface significant of the semiconductor substrate required.
  • the plates 9 and 18 are plumb as respective detection elements 12B and 21B, for example of separate coils arranged either directly on a bridge or the plate of the timepiece, or on another support, these coils being connected to an electronic circuit 31 by wires 32, the circuit 31 being provided away from the plates 9 and 18.
  • the detection elements 12B and 21B are inductive coils formed by an electric wire comprising several turns increasing the detection sensitivity. This last variant makes it possible to reduce the thickness of the part as much as possible of watchmaking, while ensuring good sensitivity for detecting means for locating the angular positions of the analog indicators for a low cost.

Abstract

Clockwork comprises first and second coaxial rotative display indicators (5, 6) respectively linked to corresponding coaxial canons (1, 2). First canon (5) defines first position locating mobile (MR1), and has first magnetic or capacitive sensor (11) for angular location associated to first mobile. Second canon (6) defines second position locating mobile (MR2) with second magnetic or capacitive sensor (20) associated to it.

Description

La présente invention est relative à une pièce d'horlogerie comprenant un mouvement horloger, pourvu d'un affichage analogique comportant au moins deux indicateurs d'affichage rotatifs solidaires de canons coaxiaux respectifs et de moyens de repérage de la position angulaire de ces indicateurs.The present invention relates to a timepiece comprising a watch movement, provided with an analog display comprising at minus two rotary display indicators secured to coaxial guns respective and of means for locating the angular position of these indicators.

Dans le cas d'une telle configuration de pièce d'horlogerie, il peut être souhaitable de disposer d'une information de position angulaire de deux de ces indicateurs coaxiaux, voire davantage. En particulier, l'invention concerne un repérage de la position angulaire de chaque indicateur par un plateau tournant superposé à un détecteur magnétique ou capacitif.In the case of such a timepiece configuration, it can be desirable to have angular position information of two of these coaxial indicators, or even more. In particular, the invention relates identification of the angular position of each indicator by a plate rotating superimposed on a magnetic or capacitive detector.

Pour cela, il est nécessaire d'associer à chaque mobile coaxial portant un indicateur un organe de repérage coopérant avec un capteur sensible à son mouvement et capable d'engendrer le signal de position angulaire recherché. Si le problème de l'implantation d'un tel capteur est relativement facile à résoudre lorsqu'un seul indicateur d'affichage est concerné, il n'en va pas de même lorsqu'on doit relever la position angulaire de deux indicateurs d'affichage tournant autour d'un même axe, voire davantage. En effet, dans ce cas, les capteurs doivent a priori être situés à proximité d'autant de plateaux de repérage superposés et respectivement montés sur les canons coaxiaux des indicateurs. Un tel agencement conduit à disposer les capteurs à des niveaux différents qui risquent alors d'occuper une hauteur importante, majorant d'autant celle du mouvement horloger. Un tel agencement compliquerait également la connectique des capteurs à un circuit électronique d'exploitation des signaux de mesure angulaire.For this, it is necessary to associate with each coaxial mobile carrying an indicator a locating member cooperating with a sensor sensitive to its movement and capable of generating the angular position signal research. If the problem of installing such a sensor is relatively easy to solve when only one display indicator is concerned, it does not not the same when you have to read the angular position of two indicators display rotating around the same axis, or even more. Indeed, in in this case, the sensors should a priori be located near as many locating plates superimposed and respectively mounted on the barrels coaxial indicators. Such an arrangement leads to placing the sensors at different levels which then risk occupying a significant height, thereby increasing that of the watchmaking movement. Such an arrangement would also complicate the connection of sensors to an electronic circuit of angular measurement signals.

L'invention a pour but de fournir une pièce d'horlogerie du type défini en préambule, et dans laquelle plusieurs indicateurs d'affichage coaxiaux peuvent être associés à des moyens capables de fournir l'information de leurs positions angulaires respectives, tout en résolvant les problèmes qui viennent d'être énoncés.The object of the invention is to provide a timepiece of the type defined in preamble, and in which several coaxial display indicators can be associated with means capable of providing information to their respective angular positions, while solving the problems that come to be stated.

L'invention a donc pour objet une pièce d'horlogerie telle que définie par les caractéristiques de la revendication 1.The subject of the invention is therefore a timepiece as defined by the features of claim 1.

Grâce à ces caractéristiques, la présence de plusieurs capteurs, associés à autant d'indicateurs coaxiaux, n'augmente pas la hauteur de la pièce d'horlogerie, qui demeure sensiblement le même que celle qu'on aurait avec un repérage par un seul indicateur tournant sur un axe donné. De plus, il devient possible de disposer les plateaux de repérage de position à un premier niveau et les capteurs à un second niveau, de sorte que la majoration en hauteur éventuellement nécessaire au repérage des positions angulaires respectives d'indicateurs coaxiaux reste celle d'un seul capteur. En outre, les capteurs se trouvant sur un même niveau de préférence, l'ensemble de la connectique peut être réalisé également à un même niveau, c'est-à-dire celui de la base des capteurs.Thanks to these characteristics, the presence of several sensors, associated with as many coaxial indicators, does not increase the height of the timepiece, which remains essentially the same as that which we would have with identification by a single indicator rotating on a given axis. Moreover, he becomes possible to arrange the position marking plates at a first level and the sensors on a second level, so the markup in height possibly necessary for the identification of the angular positions of coaxial indicators remains that of a single sensor. In addition, sensors located on the same level preferably, all of the connections can also be carried out at the same level, i.e. from the base of the sensors.

D'autres caractéristiques et avantages de l'invention apparaítront au cours de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés dans lesquels:

  • la figure 1 est une vue en coupe partielle d'un premier mode de réalisation d'une pièce d'horlogerie selon l'invention;
  • la figure 2 est une vue partielle et schématique en plan de ce premier mode de réalisation;
  • la figure 3 montre par une vue en coupe partielle un second mode de réalisation de la pièce d'horlogerie selon l'invention;
  • la figure 4 est une vue partielle et schématique en plan de ce second mode de réalisation; et
  • les figures 5 à 7 montrent plusieurs variantes possibles de la disposition des capteurs par rapport aux mobiles de repérage de position.
Other characteristics and advantages of the invention will become apparent during the description which follows, given solely by way of example and made with reference to the appended drawings in which:
  • Figure 1 is a partial sectional view of a first embodiment of a timepiece according to the invention;
  • Figure 2 is a partial and schematic plan view of this first embodiment;
  • Figure 3 shows a partial sectional view of a second embodiment of the timepiece according to the invention;
  • Figure 4 is a partial and schematic plan view of this second embodiment; and
  • Figures 5 to 7 show several possible variants of the arrangement of the sensors relative to the position tracking mobiles.

Sur toutes les figures, on n'a représenté que les parties de la pièce d'horlogerie nécessaires pour la compréhension des modes de réalisation et des variantes présentées.In all the figures, only the parts of the part have been represented. necessary for the understanding of the embodiments and variants presented.

On va tout d'abord se référer aux figures 1 et 2 qui représentent un premier mode de réalisation de la pièce d'horlogerie selon l'invention. Elle comprend un canon des minutes 1 et un canon des heures 2 montés coaxialement, de façon classique, sur un tenon commun 3 d'axe 4. Des indicateurs rotatifs des minutes 5 et des heures 6 sont respectivement chassés sur les canon 1 et 2.We will first refer to Figures 1 and 2 which represent a first embodiment of the timepiece according to the invention. She includes 1 minute cannon and 2 hour cannon mounted coaxially, in a conventional manner, on a common post 3 of axis 4. Des 5 and 6 hour rotary indicators are respectively hunted on cannons 1 and 2.

Bien entendu, les indicateurs 5 et 6 peuvent également indiquer d'autres grandeurs comme la seconde, des données de chronométrage, la date, etc. Il est également envisageable de prévoir, dans une position coaxiale, plus de deux indicateurs d'affichage, tous pourvus de moyens de repérage de leur position angulaire conçus selon l'invention.Of course, indicators 5 and 6 can also indicate other quantities such as the second, timing data, date, etc. he it is also conceivable to provide, in a coaxial position, more than two display indicators, all provided with means for identifying their angular position designed according to the invention.

Dans le présent exemple, l'arbre 3 est fiché dans un pont 7 du mouvement de la pièce d'horlogerie, ce pont étant ici appliqué contre une plaquette 8 qui est de préférence un substrat isolant pouvant avantageusement porter un circuit imprimé reliant entre eux les composants électriques et électroniques de la pièce d'horlogerie. Son circuit garde-temps (non représenté) peut éventuellement être disposé au-dessus.In the present example, the tree 3 is inserted in a bridge 7 of the movement of the timepiece, this bridge being here applied against a wafer 8 which is preferably an insulating substrate capable of advantageously carry a printed circuit connecting the components together electrical and electronic parts of the timepiece. Its timepiece circuit (not shown) can optionally be arranged above.

Le canon des minutes 1 porte un premier plateau 9 de repérage de sa position angulaire disposé perpendiculairement à l'axe 4. Dans le cas représenté ici, ce plateau comprend quatre ouvertures 10, réparties avec un décalage angulaire de 90° entre elles. Comme visible sur la figure 2 ces ouvertures 10 sont séparées par des branches de matière 9a. Ainsi, le canon des minutes 1 et son plateau 9 associé forment ensemble un premier mobile de repérage de position, auquel on a affecté la référence MR1 et qui contribue à l'obtention d'une information de position de l'indicateur des minutes 5.The minute cannon 1 carries a first plate 9 for locating its angular position arranged perpendicular to the axis 4. In the case shown here, this tray includes four openings 10, distributed with a angular offset of 90 ° between them. As seen in Figure 2 these openings 10 are separated by branches of material 9a. So the cannon minutes 1 and its associated tray 9 together form a first mobile position marker, which has been assigned the reference MR1 and which contributes when obtaining position information from the minute indicator 5.

Cette pièce d'horlogerie comporte également un premier capteur 11 de type magnétique ou capacitif. Il est placé à proximité du plateau 9 et comporte un élément de détection 12. Ce dernier est placé en dessous du plateau 9 à l'aplomb d'une zone dans laquelle évoluent alternativement les ouvertures 10 et les branches de matière 9a de ce plateau séparant les ouvertures les unes des autres. La présence alternée de ces ouvertures 10 et de ces branches de matière 9a au-dessus de l'élément de détection 12, est capable de provoquer la production d'un signal représentatif de la position angulaire de ce dernier notamment pour la présence d'un bras plus large. Dans le cas représenté, on suppose que l'élément de détection 12 est une bobine d'induction sensible aux variations des propriétés électromagnétiques du plateau 9, lorsqu'il tourne autour de l'axe 4. On voit donc que le plateau 9 présente au moins une discontinuité de matière susceptible d'être détectée par le capteur 11, lors de la rotation du mobile MR1 par rapport audit capteur 11, pour fournir un premier signal de mesure représentatif d'une position angulaire de l'indicateur d'affichage 5.This timepiece also includes a first sensor 11 of magnetic or capacitive type. It is placed near the plate 9 and includes a detection element 12. The latter is placed below the platform 9 directly above an area in which the openings 10 and the material branches 9a of this plate separating the openings to each other. The alternating presence of these openings 10 and of these branches of material 9a above the detection element 12, is capable of causing the production of a signal representative of the position angular of the latter in particular for the presence of a wider arm. In the case shown, it is assumed that the detection element 12 is a induction coil sensitive to variations in electromagnetic properties of the plate 9, when it rotates around the axis 4. It can therefore be seen that the plate 9 has at least one discontinuity of material capable of being detected by the sensor 11, during the rotation of the mobile MR1 relative to said sensor 11, to provide a first measurement signal representative of a angular position of the display indicator 5.

La pièce d'horlogerie selon l'invention comprend également un second mobile de repérage de position MR2 monté à l'écart du mobile MR1. Ce dernier comprend un tourillon 13 monté rotatif, dans le pont 7 et dans une platine 14 de la pièce d'horlogerie, autour d'un axe 15.The timepiece according to the invention also comprises a second position locating mobile MR2 mounted away from mobile MR1. This the latter comprises a journal 13 mounted rotatably, in the bridge 7 and in a plate 14 of the timepiece, around an axis 15.

Le canon des heures 2 engrène par l'intermédiaire de son plateau 16, avec un plateau d'entraínement 17 rivé sur le tourillon 13 et, de ce fait, solidaire en rotation de l'indicateur des heures 6. Le rapport d'engrenage entre le plateau 16 entraíné par le canon des heures 2 et le plateau d'entraínement 17 est de préférence de 1:1. The 2 hour cannon meshes through its plate 16, with a drive plate 17 riveted on the pin 13 and, therefore, attached to the hour indicator in rotation 6. The gear ratio between the plate 16 driven by the 2 hour cannon and the plate drive 17 is preferably 1: 1.

Un second plateau 18 de repérage de position angulaire est également rivé sur le tourillon 13 dans une position perpendiculaire à l'axe 15. Dans l'exemple décrit, ce plateau 18 présente une forme identique à celle du plateau 9, à l'exception de la denture, et présente donc des ouvertures 19 séparées par des branches radiales de matière 18a. On notera cependant que l'identité de formes et de diamètres des deux plateaux 9 et 18 n'est pas un impératif.A second plate 18 for locating angular position is also riveted on the pin 13 in a position perpendicular to the axis 15. In the example described, this plate 18 has a shape identical to that of the plate 9, with the exception of the toothing, and therefore has separate openings 19 by radial branches of material 18a. Note however that the identity of shapes and diameters of the two plates 9 and 18 is not an imperative.

Ainsi, le second plateau de repérage de position MR2 contribue à l'obtention d'une information de position de l'indicateur des heures 6 en association avec un second capteur 20 placé à proximité du second plateau 18 et comportant un élément de détection 21. Ce dernier est placé en dessous du plateau 18, à l'aplomb d'une zone dans laquelle évoluent alternativement les ouvertures 19 et les branches de matière 18a séparant les ouvertures les unes des autres. Le passage alternée des ces ouvertures 19 et de ces branches de matière 18a au-dessus du capteur 20 est capable de provoquer la production par ledit capteur 20 d'un signal représentatif de la position angulaire du mobile MR2 et, partant, de l'indicateur des heures 6. Dans le mode de réalisation représenté, l'élément de détection est une bobine d'induction sensible aux variations électromagnétiques du plateau 18, lorsqu'il tourne autour de l'axe 15. On constate donc que le second plateau 18 comporte au moins une discontinuité de matière susceptible d'être détectée par le second capteur 20 lors de la rotation du mobile MR2 par rapport à ce capteur, pour fournir un second signal de mesure représentatif d'une position angulaire du second indicateur d'affichage 6.The second position marker MR2 thus contributes to obtaining position information from the hour indicator 6 in association with a second sensor 20 placed near the second plate 18 and comprising a detection element 21. The latter is placed in below the plate 18, plumb with an area in which evolve alternately the openings 19 and the branches of material 18a separating the openings of each other. The alternate passage of these openings 19 and of these branches of material 18a above the sensor 20 is capable to cause the production by said sensor 20 of a signal representative of the angular position of the mobile MR2 and, consequently, of the hour indicator 6. In the embodiment shown, the detection element is a coil induction sensitive to electromagnetic variations of the plate 18, when turns around the axis 15. It can therefore be seen that the second plate 18 contains at least one discontinuity of material capable of being detected by the second sensor 20 when the mobile MR2 rotates relative to this sensor, to provide a second measurement signal representative of a position angle of the second display indicator 6.

La demande de brevet suisse No 0937/98 déposée le 24 avril 1998 au nom de la Demanderesse, respectivement la demande européenne correspondante No 98 110729.5 déposée le 11 juin 1998, décrit en détail la conception, le fonctionnement et les variantes possibles d'un plateau de repérage de position angulaire et de son capteur magnétique associé, utilisables pour la réalisation des plateaux 9 et 18 et les capteurs 11 et 20.Swiss patent application No 0937/98 filed on April 24, 1998 at name of the Applicant, respectively the European application correspondent No 98 110729.5 filed on June 11, 1998, describes in detail the design, operation and possible variants of a location of angular position and its associated magnetic sensor, usable for the production of plates 9 and 18 and sensors 11 and 20.

Comme décrit notamment dans ces demandes de brevet, les capteurs 11 et 20 peuvent être de type inductif (comme représenté ici) ou de type capacitif. Les plateaux 9 et 18 sont conformés de telle façon et réalisés en une matière telle que leurs mouvements par rapport aux capteurs engendrent respectivement des variations d'au moins un paramètre de ces derniers, ces variations donnant lieu à la formation des signaux de position précités. Cette formulation générale implique que de nombreuses possibilités de réalisation des couples plateau-capteur sont possibles dans le cadre de la présente invention, ces possibilités résultant pour l'homme de métier notamment des demandes de brevet précitées. La description de ces nombreuses variantes n'est donc pas reprise ici.As described in particular in these patent applications, the sensors 11 and 20 can be inductive (as shown here) or type capacitive. The plates 9 and 18 are shaped in such a way and made in a material such that their movements relative to the sensors generate respectively variations of at least one parameter of these, these variations giving rise to the formation of the aforementioned position signals. This general formulation implies that many possibilities of realization tray-sensor pairs are possible within the scope of this invention, these possibilities resulting for the skilled person in particular from aforementioned patent applications. The description of these many variants is therefore not repeated here.

Chacun des éléments de détection 12 et 21 est monté sur un substrat 22 et 23 portant également, par exemple sous forme d'un circuit intégré, les moyens de traitement électroniques du signal fourni par l'élément de détection 12 ou 21 associé. Dans ce cas, les substrats 22 et 23 sont en un matériau semi-conducteur. Si, comme dans le mode de réalisation représenté sur les figures 1 et 2, les éléments de détection 12 et 21 sont des bobines plates, ils sont de préférence formés par dépôt métallique sur leurs substrats respectifs 22, 23. Par ailleurs, chacun d'entre eux peut comporter des fils de connexion 24 menant vers un autre circuit électronique d'exploitation agencé dans la pièce d'horlogerie, comprenant notamment le circuit garde-temps. Des gouttes de colle 25 peuvent enrober partiellement ou de préférence totalement ces fils.Each of the detection elements 12 and 21 is mounted on a substrate 22 and 23 also carrying, for example in the form of an integrated circuit, the means for electronic processing of the signal supplied by the detection element 12 or 21 associated. In this case, the substrates 22 and 23 are made of a material semiconductor. If, as in the embodiment shown in the Figures 1 and 2, the detection elements 12 and 21 are flat coils, they are preferably formed by metallic deposition on their substrates respectively 22, 23. In addition, each of them may include wires of connection 24 leading to another arranged electronic operating circuit in the timepiece, including in particular the timepiece circuit. Glue drops 25 can partially or preferably coat totally these sons.

Avantageusement, les plateaux de repérage de position 9 et 18 et leurs capteurs associés 12 et 21 sont respectivement disposés dans deux plans superposés parallèles au substrat 8. Ainsi, la hauteur occupée par l'ensemble des deux couples plateau-capteur se limite à celle d'un seul de ces couples, par opposition à une disposition où les deux ensembles seraient superposés le long de l'axe 4, notamment avec un capteur agencé entre les plateaux 9 et 16.Advantageously, the position marking plates 9 and 18 and their associated sensors 12 and 21 are respectively arranged in two superimposed planes parallel to the substrate 8. Thus, the height occupied by the set of two plate-sensor pairs is limited to that of only one of these couples as opposed to a layout where the two sets would superimposed along axis 4, in particular with a sensor arranged between the plates 9 and 16.

Selon diverses variantes de construction envisageables, on peut assigner au mobile MR2, outre sa fonction de repérage de position, une fonction de transmission de force à l'indicateur 6 associé dans le cadre du mouvement horloger proprement dit.According to various possible construction variants, it is possible assign to the mobile MR2, in addition to its position tracking function, a force transmission function to the associated indicator 6 within the framework of the watch movement proper.

Par exemple, selon une première de ces variantes, le plateau 18 du mobile MR2 peut faire partie d'un train d'engrenages moteur de la pièce d'horlogerie (ou être entraíné directement par un moteur) pour assurer la transmission du mouvement vers le plateau 16 du canon des heures 2. Dans ce cas, le plateau 18 présente une denture.For example, according to a first of these variants, the plate 18 of the mobile MR2 can be part of a work engine gear train watchmaking (or be driven directly by a motor) to ensure the transmission of the movement towards the plate 16 of the hour canon 2. In in this case, the plate 18 has teeth.

Selon une deuxième variante, la transmission de force peut être assurée par le plateau d'entraínement 17 du mobile MR2 faisant, dans ce cas, partie du train d'engrenages de la pièce d'horlogerie. On peut alors se dispenser d'une denture sur le plateau 18.According to a second variant, the force transmission can be provided by the drive plate 17 of the mobile MR2 making, in this case, part of the gear train of the timepiece. We can then dispense a toothing on the plate 18.

Selon encore une troisième variante, le plateau 16 du canon des heures 2 peut être entraíné directement par un train d'engrenages moteur (ou par un moteur) de la pièce d'horlogerie et entraíner à son tour le mobile MR2 par l'intermédiaire du plateau 17. Dans ce cas, le mobile MR2 est un mobile additionnel dédié uniquement au repérage de la position angulaire de l'indicateur 6.According to yet a third variant, the plate 16 of the hour canon 2 can be driven directly by a motor gear train (or by a motor) of the timepiece and in turn drive the mobile MR2 by via tray 17. In this case, the mobile MR2 is a mobile additional dedicated only to locating the angular position of indicator 6.

Si une force d'entraínement est appliquée au mobile MR1 par le plateau 9, celui-ci comprend une denture 27. Toutefois, dans une variante, le canon des minutes 1 peut être entraíné par exemple au niveau d'un pignon situé au-dessus ou au-dessous du plateau 9.If a driving force is applied to the mobile MR1 by the plate 9, this comprises a toothing 27. However, in a variant, the barrel 1 minutes can be driven for example at a pinion located above or below the plate 9.

Enfin, il est également possible, dans des configurations semblables aux deuxième et troisième variantes ci-dessus, de ne prévoir sur le mobile MR2 qu'un seul plateau denté et muni d'ouvertures, engrenant à la fois avec le plateau 16 et avec le train d'engrenages du mouvement horloger pour servir tant d'organe de transmission de mouvement que d'organe de repérage de position. Naturellement, dans ce cas, le substrat 23 doit être situé un peu plus haut que le substrat 22, ce qui complique l'agencement des parties électroniques et la connectique de ces parties.Finally, it is also possible, in configurations similar to second and third variants above, not to provide on the mobile MR2 that a single toothed tray and provided with openings, meshing with both the plate 16 and with the clockwork gear train to serve both motion transmission and tracking devices position. Naturally, in this case, the substrate 23 must be located a little higher than the substrate 22, which complicates the arrangement of the parts electronics and the connection of these parts.

On pourrait également envisager un rapport d'engrenage entre le canon des heures 2 et le mobile MR2, diffèrent de 1:1, la différence des vitesses de rotation devant alors être prise en compte dans les moyens d'exploitation électroniques des capteurs 11 et 20.We could also consider a gear relationship between the 2 hour cannon and the MR2 mobile, differ by 1: 1, the difference of rotational speeds must then be taken into account in the means electronic operating systems of sensors 11 and 20.

Les spécialistes comprendront également que rien n'empêche de prévoir un ou plusieurs autres couples plateau-capteur associés à d'autres indicateurs coaxiaux, tels que celui des secondes par exemple.Specialists will also understand that nothing prevents provide one or more other plate-sensor pairs associated with others coaxial indicators, such as that of the seconds for example.

Les figures 3 et 4 montrent un autre mode de réalisation de la pièce d'horlogerie selon l'invention ne différant de celui des figures 1 et 2 que par la disposition des éléments de détection et de leurs circuits associés. Les autres composants de la pièce ne seront donc pas de nouveau décrits et ils portent les mêmes références que sur les figures 1 et 2.Figures 3 and 4 show another embodiment of the part of watchmaking according to the invention differing from that of FIGS. 1 and 2 only by the arrangement of the detection elements and their associated circuits. Others components of the part will therefore not be described again and they bear the same references as in FIGS. 1 and 2.

Ainsi, des capteurs 11A et 20A comportent des éléments de détection 12A et 21A qui, dans cet exemple, se présentent également sous la forme de bobines inductives plates. Mais, ici les circuits électroniques des deux capteurs 11A et 20A sont prévus dans un même substrat semi-conducteur 28. De préférence, ces deux circuits présentent une partie commune intégrée dans ce substrat. Dans ce cas, il peut également être avantageux d'intégrer dans le substrat 22 l'ensemble des composants électroniques de la pièce d'horlogerie, y compris notamment le circuit garde-temps. Thus, sensors 11A and 20A include detection elements 12A and 21A which, in this example, are also in the form of flat inductive coils. But here the electronic circuits of the two sensors 11A and 20A are provided in the same semiconductor substrate 28. From these two circuits preferably have a common part integrated in this substrate. In this case, it may also be advantageous to integrate into the substrate 22 all of the electronic components of the timepiece, including the timepiece circuit.

Alors que sur les figures 3 et 4, le substrat 28 s'étend, par une partie d'extrémité portant les éléments de détection 12A et 21A, entre les axes 4 et 15 des mobiles MR1 et MR2, dans la variante de la figure 5, il est prévu un substrat 29 s'étendant par une partie d'angle 29a entre les axes 4 et 15, en étant ainsi placé de biais.Whereas in FIGS. 3 and 4, the substrate 28 extends, by a part end carrying the detection elements 12A and 21A, between axes 4 and 15 of the mobiles MR1 and MR2, in the variant of FIG. 5, there is provided a substrate 29 extending through a corner portion 29a between axes 4 and 15, in thus being placed at an angle.

La figure 6 montre un substrat 30 placé intégralement du même côté par rapport aux axes 4 et 15, cette variante étant onéreuse vu la surface importante du substrat semi-conducteur nécessaire.FIG. 6 shows a substrate 30 placed entirely on the same side compared to axes 4 and 15, this variant being expensive given the surface significant of the semiconductor substrate required.

Enfin dans la variante de la figure 7, on ne prévoit à l'aplomb des plateaux 9 et 18 que des éléments de détection respectifs 12B et 21B, par exemple des bobines distinctes agencées soit directement sur un pont ou la platine de la pièce d'horlogerie, soit sur un autre support, ces bobines étant connectées à un circuit électronique 31 par des fils 32, le circuit 31 étant prévu éloigné des plateaux 9 et 18. De préférence, les éléments de détection 12B et 21B sont des bobines inductives formées par un fil électrique comportant plusieurs spires augmentant la sensibilité de détection. Cette dernière variante permet de diminuer au maximum l'épaisseur de la pièce d'horlogerie, tout en assurant une bonne sensibilité de détection des moyens de repérage des positions angulaires des indicateurs analogiques pour un faible coût.Finally, in the variant of FIG. 7, it is not intended to plumb the plates 9 and 18 as respective detection elements 12B and 21B, for example of separate coils arranged either directly on a bridge or the plate of the timepiece, or on another support, these coils being connected to an electronic circuit 31 by wires 32, the circuit 31 being provided away from the plates 9 and 18. Preferably, the detection elements 12B and 21B are inductive coils formed by an electric wire comprising several turns increasing the detection sensitivity. This last variant makes it possible to reduce the thickness of the part as much as possible of watchmaking, while ensuring good sensitivity for detecting means for locating the angular positions of the analog indicators for a low cost.

Claims (16)

Pièce d'horlogerie comprenant un mouvement horloger, pourvu d'un affichage analogique, caractérisé en ce qu'elle comprend: au moins des premier et second indicateurs d'affichage rotatifs coaxiaux (5,6) solidaires respectivement de canons coaxiaux correspondants (1,2), un premier (1) de ces canons portant un premier plateau (9) perpendiculaire à son axe (4), l'ensemble formant ainsi un premier mobile de repérage de position (MR1), ainsi qu'associé à ce premier mobile (MR1), un premier capteur magnétique ou capacitif de position angulaire (11) dudit premier mobile et par conséquent dudit premier indicateur d'affichage correspondant (5), ledit plateau présentant au moins une discontinuité de matière (10) susceptible d'être détectée par ledit premier capteur, lors de la rotation dudit premier mobile par rapport audit premier capteur, pour fournir un premier signal de mesure représentatif d'une position angulaire dudit premier indicateur d'affichage, au moins un second mobile de repérage de position angulaire (MR2) dudit second indicateur d'affichage (6), ce second mobile (MR2) étant monté à l'écart dudit premier mobile et en relation d'engrènement avec un second desdits canons (2), ledit second mobile (MR2) portant au moins un second plateau (18) perpendiculaire à son axe (15), ainsi qu'associé à ce second mobile (MR2), un second capteur magnétique ou capacitif (20) de la position angulaire de celui-ci et par conséquent du second (6) desdits indicateurs d'affichage, ledit second plateau (18) présentant au moins une discontinuité de matière (19) susceptible d'être détectée par ledit second capteur (20), lors de la rotation dudit second mobile par rapport audit second capteur, pour fournir un second signal de mesure représentatif d'une position angulaire dudit second indicateur d'affichage (6). Timepiece comprising a watch movement, provided with an analog display, characterized in that it comprises: at least first and second coaxial rotary display indicators (5,6) respectively secured to corresponding coaxial guns (1,2), a first (1) of these guns carrying a first plate (9) perpendicular to its axis (4 ), the assembly thus forming a first position locating mobile (MR1), as well as associated with this first mobile (MR1), a first magnetic or capacitive angular position sensor (11) of said first mobile and therefore of said first corresponding display indicator (5), said plate having at least one discontinuity of material (10) capable of being detected by said first sensor, during the rotation of said first mobile relative to said first sensor, to supply a first measurement signal representative of an angular position of said first display indicator, at least one second mobile for locating the angular position (MR2) of said second display indicator (6), this second mobile (MR2) being mounted away from said first mobile and in engagement relationship with a second of said guns ( 2), said second mobile (MR2) carrying at least one second plate (18) perpendicular to its axis (15), as well as associated with this second mobile (MR2), a second magnetic or capacitive sensor (20) of the angular position thereof and consequently of the second (6) of said display indicators, said second plate (18) having at least one discontinuity of material (19) capable of being detected by said second sensor (20), during the rotation of said second mobile relative to said second sensor, to supply a second measurement signal representative of an angular position of said second display indicator (6). Pièce d'horlogerie suivant la revendication 1, caractérisée en ce que lesdits premier et second plateaux (9, 18) sont disposés dans un même premier plan et en ce que lesdits capteurs (11, 20) comportent respectivement des éléments de repérage de position (12, 21) placés dans un second même plan parallèle audit premier plan, respectivement au-dessus ou en dessous desdits plateaux (9, 18). Timepiece according to claim 1, characterized in that said first and second plates (9, 18) are arranged in the same foreground and in that said sensors (11, 20) comprise position locating elements (12, 21) respectively placed in a second same plane parallel to said foreground, respectively above or below said plates (9, 18). Pièce d'horlogerie suivant la revendication 2, caractérisée en ce que lesdits éléments de repérage de position (12, 21) sont disposés chacun en surface d'un substrat semi-conducteur distinct (22, 23), disposés sur un substrat plat commun (8).Timepiece according to claim 2, characterized in that said position marking elements (12, 21) are each arranged on the surface of a separate semiconductor substrate (22, 23), arranged on a common flat substrate (8). Pièce d'horlogerie suivant la revendication 2, caractérisée en ce que lesdits éléments de repérage de position (12A, 21A) sont disposés en surface d'un substrat semi-conducteur commun (28; 29; 30).Timepiece according to claim 2, characterized in that said position marking elements (12A, 21A) are arranged in surface of a common semiconductor substrate (28; 29; 30). Pièce d'horlogerie suivant la revendication 4, caractérisée en ce que lesdits capteurs (11, 20; 11A, 20A) comportent chacun un circuit de traitement de signaux de mesure, les deux circuits présentant une partie commune intégrée dans ledit substrat semi-conducteur.Timepiece according to claim 4, characterized in that that said sensors (11, 20; 11A, 20A) each include a circuit for processing of measurement signals, the two circuits having a part common integrated in said semiconductor substrate. Pièce d'horlogerie suivant l'une quelconque des revendications 3 à 5, comportant un circuit garde-temps électronique, caractérisée en ce que ledit circuit garde-temps est prévu dans l'un desdits substrats semiconducteurs (22, 23; 28; 29; 30) en surface duquel est prévu au moins l'un des éléments de repérage de position (12, 21; 21A, 21A).Timepiece according to any one of claims 3 to 5, comprising an electronic timepiece circuit, characterized in that said timepiece circuit is provided in one of said semiconductor substrates (22, 23; 28; 29; 30) on the surface of which at least one is provided position marking elements (12, 21; 21A, 21A). Pièce d'horlogerie suivant la revendication 1 ou 2, caractérisée en ce que lesdits éléments de repérage de position (12B, 21B) sont disposés sur la platine, un pont ou un autre support de ladite pièce et en ce que lesdits capteurs comportent respectivement des circuits de traitement de signaux de mesure prévus dans un substrat semi-conducteur (31) disposé à un endroit de ladite platine dudit pont ou dudit autre support éloigné desdits plateaux (9, 18).Timepiece according to claim 1 or 2, characterized in that said position marking elements (12B, 21B) are arranged on the plate, a bridge or another support for said part and in that said sensors respectively have signal processing circuits provided in a semiconductor substrate (31) arranged at a location of said plate of said bridge or of said other support remote from said trays (9, 18). Pièce d'horlogerie suivant l'une quelconque des revendications 1 à 7, caractérisée en ce que le canon extérieur (2) desdits canons coaxiaux comprend un plateau de transmission (16) engrenant avec un plateau d'entraínement (17) faisant partie dudit second mobile de repérage de position (MR2).Timepiece according to any one of claims 1 to 7, characterized in that the outer barrel (2) of said coaxial barrels comprises a transmission plate (16) meshing with a plate drive (17) forming part of said second mobile for locating position (MR2). Pièce d'horlogerie suivant la revendication 8, caractérisée en ce que ledit plateau d'entraínement et ledit second plateau sont confondus et munis d'une denture extérieure engrenant avec le train d'engrenages dudit mouvement horloger.Timepiece according to claim 8, characterized in that that said drive plate and said second plate are combined and provided with external toothing meshing with the gear train of said watch movement. Pièce d'horlogerie suivant la revendication 8, caractérisée en ce que ledit plateau de transmission (16) dudit canon extérieur (2) est couplé au train d'engrenages dudit mouvement horloger en entraínant ledit second mobile de repérage de position (MR2). Timepiece according to claim 8, characterized in that that said transmission plate (16) of said outer barrel (2) is coupled to the gear train of said watch movement by driving said second position tracking mobile (MR2). Pièce d'horlogerie suivant la revendication 8, caractérisée en ce que ledit plateau d'entraínement (17) dudit second mobile de repérage de position (MR2) est couplé au train d'engrenages dudit mouvement horloger.Timepiece according to claim 8, characterized in that that said drive plate (17) of said second locating mobile of position (MR2) is coupled to the gear train of said watch movement. Pièce d'horlogerie suivant la revendication 8, caractérisée en ce que ledit second plateau (18) dudit second mobile de repérage de position (MR2) comporte une denture (26) couplée au train d'engrenages dudit mouvement horloger pour la transmission de la force motrice vers ledit canon extérieur (2) par l'intermédiaire dudit plateau d'entraínement (17).Timepiece according to claim 8, characterized in that that said second plate (18) of said second position marking mobile (MR2) has a toothing (26) coupled to the gear train of said watch movement for the transmission of motive force to said cannon outside (2) via said drive plate (17). Pièce d'horlogerie suivant l'une quelconque des revendications 4 à 12, caractérisée en ce que ledit substrat commun (28, 29) présente une forme générale rectangulaire et est disposé en partie entre les axes (4, 15) desdits mobiles de repérage de position (MR1, MR2).Timepiece according to any one of claims 4 to 12, characterized in that said common substrate (28, 29) has a generally rectangular in shape and is arranged partly between the axes (4, 15) said position locating mobiles (MR1, MR2). Pièce d'horlogerie suivant la revendication 13, caractérisée en ce que la partie dudit substrat (29) disposée entre lesdits axes (4, 15) est une portion d'angle (29a) de ce substrat.Timepiece according to claim 13, characterized in that that the part of said substrate (29) disposed between said axes (4, 15) is a corner portion (29a) of this substrate. Pièce d'horlogerie suivant l'une quelconque des revendications 4 ‡ 12, caractérisée en ce que ledit substrat commun (30) est disposé d'un même côté des axes (4, 15) desdits mobiles de repérage de position (MR1, MR2).Timepiece according to any one of claims 4 ‡ 12, characterized in that said common substrate (30) is arranged with a same side of the axes (4, 15) of said position marking mobiles (MR1, MR2). Pièce d'horlogerie suivant la revendication 1, caractérisée en ce que lesdits canons (1, 2) sont respectivement ceux des minutes et des heures dudit mouvement horloger.Timepiece according to claim 1, characterized in that said canons (1, 2) are respectively those of minutes and hours of said watch movement.
EP19990108958 1999-05-06 1999-05-06 Timepiece with means for determining the angular position of analog display coaxial indicators Expired - Lifetime EP1050784B1 (en)

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DE69942303T DE69942303D1 (en) 1999-05-06 1999-05-06 Clock with means for determining the angular position of the coaxial pointer of an analog display
EP19990108958 EP1050784B1 (en) 1999-05-06 1999-05-06 Timepiece with means for determining the angular position of analog display coaxial indicators

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CH93798A (en) 1918-07-09 1922-04-01 Federal System Of Bakeries Of Bakery oven.
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EP0721154A1 (en) * 1995-01-05 1996-07-10 Isa France S.A. Means and method to detect and correct the position of a moving object
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