EP0608535B1 - Clockwork-movement with two opposite analog displays - Google Patents

Clockwork-movement with two opposite analog displays Download PDF

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Publication number
EP0608535B1
EP0608535B1 EP93120087A EP93120087A EP0608535B1 EP 0608535 B1 EP0608535 B1 EP 0608535B1 EP 93120087 A EP93120087 A EP 93120087A EP 93120087 A EP93120087 A EP 93120087A EP 0608535 B1 EP0608535 B1 EP 0608535B1
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EP
European Patent Office
Prior art keywords
wheel
display
toothed
hands
gear train
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EP93120087A
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German (de)
French (fr)
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EP0608535A1 (en
Inventor
Walter Schlup
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Individual
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    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B5/00Automatic winding up
    • G04B5/02Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/18Supports, suspensions or guide arrangements, for oscillating weights
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00Indicating the time by visual means
    • G04B19/02Back-gearing arrangements between gear train and hands
    • G04B19/025Back-gearing arrangements between gear train and hands for simultaneous indicating on several dials
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00Indicating the time by visual means
    • G04B19/22Arrangements for indicating different local apparent times; Universal time pieces
    • G04B19/23Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands
    • G04B19/235Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands mechanisms for correcting the additional hand or hands
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B27/00Mechanical devices for setting the time indicating means
    • G04B27/02Mechanical devices for setting the time indicating means by making use of the winding means
    • G04B27/04Mechanical devices for setting the time indicating means by making use of the winding means with clutch wheel

Definitions

  • the present invention relates to a timepiece movement intended to equip a reversible watch displaying on each of its two main faces different time information. It relates more particularly to a movement comprising two analog displays opposite hands indicating for example the time of two time zones, the hands of one of the displays advancing in opposite direction, but in synchronism, with those of the other display.
  • patent CH 57805 describes a double pocket watch face which indicates on each side a different time by means of a movement comprising two opposite displays whose hands rotate around an axis passing through the center of the watch.
  • the hands of one of the displays are rotated in a conventional manner, opposite one of the faces of the movement, by a minute shaft fitted with greasy friction in the shaft of the center wheel, also called the minutes, while the hands of the other display are driven, in the opposite direction, by a gear train which meshes with a return pinion fixed opposite the other face of the movement on the same minutes shaft.
  • the hands of one of the displays are the hands of a conventional display, driven in a known manner by a gear train from from the minute tree.
  • the hands of the other display are rotated, clockwise reverse of the previous needles, by a gear train arranged flat, so as to reduce the excess thickness as much as possible, on the other side of the movement.
  • the transmission of the rotational movement of a moving part of the timer train to the moving parts arranged on the other face is obtained by means of a through-lanterned carriageway joining the two faces of the movement and cooperating with an external control pusher.
  • the length of the gear train introduces a clearance, even greater than in the previous case, in the driving of the hands of the other display during the synchronization of the two displays.
  • the gears must have a low clearance and therefore meet strict manufacturing standards, resulting in a high manufacturing cost. Setting the time of each display separately is possible in this embodiment, but this thanks to the control button, the present of which complicates the construction of the movement as well as that of the watch case.
  • the timepiece-spring movement according to the invention delimited by two opposite main faces that are substantially planar and parallel, comprising two hour displays with hands, a spring barrel, a gear train comprising a large medium gear wheel integral with a pinion meshing with the barrel, a medium gear wheel integral with a pinion meshing with the large wheel mean and a gear for the minutes making one revolution per hour, and means for transmitting the energy accumulated in the spring to the balance-spring system and for rotating the hands of one of the displays opposite one of the faces, another gear train having the function of driving the needles of the other display opposite the other face in synchronism with these needles, means for winding up the barrel spring, and these setting means 'time of the two displays, is particularly remarkable in that the other gear train includes a gear toothed return which is integral in rotation with the large medium wheel.
  • An advantage of the invention comes from the fact that the gear train driving the needles of the other display has very few mobiles, and that these mobiles are arranged so as to increase the height of the movement as little as possible.
  • FIG. 1 An embodiment of a mechanical timepiece movement with balance-spring with two time displays according to the invention is shown in FIG. 1.
  • References 1 and 2 respectively designate the two main faces, substantially planar and parallel, of the movement.
  • Opposite side 1, or first side is arranged an analog time display, or first display, constituting the conventional display and comprising the hours hands 3h, minutes 3m and seconds 3s moving in front of a dial 4.
  • Next to side 2, or second side is another analog time display, or second display, comprising the 5h and 5m hour hands, move in synchronism but in the opposite direction to the previous hands and to indicate the time in any time zone.
  • the hands of the two displays pivot around of a common axis xx '.
  • a time-setting rod 6 with three axial positions allows the indications of the two displays to be corrected separately, and the spring to be wound up in a manual movement, but in this case it is an automatic movement comprising a oscillating weight 7.
  • Fig. 2 shows in a sectional view the arrangement of the main organs of the movement.
  • the centering of a spring barrel 10 is engaged with a pinion 11 integral with a large medium gear 12, the pinion and the wheel being supported by a large medium shaft 13 pivoting in bearings 14.
  • a pinion 15, integral with a medium gear 16 meshes, on the one hand, with the large medium wheel 12, and on the other hand, with a minutes gear 17, also called center wheel, performing one revolution per hour.
  • the minute wheel rotates, by means of a friction carriageway 18 comprising a pinion 19, the minute hand 3m of the first time display.
  • the mean wheel 16 is, for its part, engaged with a pinion 25 integral with a toothed wheel of the seconds 26.
  • the pinion 25 and the wheel 26 perform one revolution per minute and they are supported by an axis 27 on which is fixed the seconds hand 3s.
  • the seconds wheel 26 meshes with a pinion 30 fixed on a shaft 31 supporting an escape wheel 32.
  • an anchor 33 cooperating with the escape wheel, transmits the energy accumulated in the spring of the barrel 10 to balance-spring regulator system not shown.
  • the hands 5h and 5m of the second display are driven, for their part, by another gear train.
  • This second gear train which constitutes the invention proper, is described below.
  • a return toothed wheel 35 On the shaft 13 supporting the large medium wheel 12, is fixed a return toothed wheel 35.
  • the wheel 35 integral in rotation with the wheel 12, meshes with a toothed minute wheel 36 which rotates per hour around the 'axis xx'.
  • the wheel 36 is similar to the minute wheel 17 of the first gear train, and it drives in the same way as the latter the minute hand 5m of the second display by means of a friction carriageway 37 similar to the carriageway 18.
  • a timer gear 38 meshing with a pinion 39 of the roadway 37, drives via a pinion 40 an hour wheel 41 supporting the hour hand 5h via a barrel 42.
  • the correction of the indications of each time display separately is obtained by means of the time setting rod 6, which can occupy three axial positions, and an appropriate mechanism known per se.
  • the rod 6 has a cylindrical part 45, and a square section part 46.
  • On the cylindrical part freely pivots a pinion 47 having a square central opening and a radial peripheral toothing 48, the toothing engaging the first wheel. cog of a gear train formed of toothed wheels 49, 50 and 51, the last wheel meshing with the timer wheel 38.
  • a toothed wheel 55 meshes with the timer wheel 21 and, according to the axial position of the pinion 52, with the toothing 53 of the latter.
  • a rocker 56 is disposed in the groove 54 intended to move the pinion 52 axially in dependence on the axial position of the rod 6.
  • the time setting rod 6 is shown in the pushed position, or neutral position, in which its rotation does not cause any modification of the displays.
  • the pinion 47 is not driven by the square section 46 of the rod, while the pinion 52, while pivoting, does not mesh with the wheel 55.
  • the part 46 is just flush with the pinion 47, while the rocker 56 moves the pinion 52 so that its teeth 53 come into engagement with that of the wheel 55.
  • a rotation of the rod 6 then drives the wheel 55 and the hands 3m and 3h of the first display, without having any effect on those of the second display.
  • the square section 46 enters the square opening of the pinion 47, while the rocker 56 moves the pinion 52 so as to move the teeth 53 away from the wheel 55.
  • a rotation of the rod 6 has the effect of driving the pinion 47 and therefore the hands 5m and 5h of the second display, without moving those of the first display.
  • the mechanism so that the time setting rod 6 corrects one of the displays in one of the pulled positions, and the two displays in synchronism in the other pulled position.
  • the rod 6 should be able to occupy three drawn positions, the first to set the calendar to the date, the second and third positions then corresponding respectively to the first and second positions which have just been described.
  • a bridge 60 supports the oscillating mass 7 of known type. Arranged between the main face 2 and the hands 5m and 5h, it pivots around the axis xx '. A central hole in this mass gives passage to the organs driving the needles. A cog, not shown, connecting the mass 7 to the barrel 10, moreover, in known manner, reassembles the spring. In order to facilitate the assembly of the movement, the members referenced 36 to 41 and 51, are also arranged on the bridge 60. It then suffices to move the bridge 60 away, as shown in FIG. 3, to give access to the members previously cited.
  • the seconds hand 3s could pivot around an axis different from the axis xx ', and could for example be in the form of a small hand placed at 6 o'clock.
  • the second display could include a single hand 61, shown in FIG. 3, making one revolution per 24 hours and indicating the time zones on a dial 62.
  • the movement could be of the manual winding type, and in this case the hands 5m, 5h, 61 could also pivot around an axis other than the axis xx '.

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

Description

La présente invention concerne un mouvement d'horlogerie destiné à équiper une montre réversible affichant sur chacune de ses deux faces principales une information horaire différente. Elle concerne plus particulièrement un mouvement comportant deux affichages analogiques opposés à aiguilles indiquant par exemple l'heure de deux fuseaux horaires, les aiguilles de l'un des affichages avançant en sens inverse, mais en synchronisme, de celles de l'autre affichage.The present invention relates to a timepiece movement intended to equip a reversible watch displaying on each of its two main faces different time information. It relates more particularly to a movement comprising two analog displays opposite hands indicating for example the time of two time zones, the hands of one of the displays advancing in opposite direction, but in synchronism, with those of the other display.

Les mouvements pour de telles montres sont connus en soi. Par exemple le brevet CH 57805 décrit une montre de poche double face qui indique sur chacune des faces une heure différente au moyen d'un mouvement comportant deux affichages opposés dont les aiguilles pivotent autour d'un axe passant par le centre de la montre. Les aiguilles de l'un des affichages sont mises en rotation de manière conventionnelle, en regard de l'une des faces du mouvement, par un arbre des minutes ajusté à frottement gras dans l'arbre de la roue de centre, appelée aussi roue des minutes, alors que les aiguilles de l'autre affichage sont entraînées, en sens inverse, par un rouage venant engrener avec un pignon de renvoi fixé en regard de l'autre face du mouvement sur le même arbre des minutes. La présence du pignon de renvoi, disposé entre l'autre face du mouvement et les aiguilles de l'autre affichage, augmente d'autant l'épaisseur totale du calibre tout en introduisant un jeu supplémentaire dans le mouvement des aiguilles. Si cela est acceptable dans le cas d'une montre de poche, un tel accroissement d'épaisseur constituerait par contre un inconvénient important dans la réalisation d'une montre-bracelet dans laquelle la hauteur présente une grande importance du point de vue esthétique. Un autre désavantage de ce mouvement provient du fait que les affichages ne peuvent pas être mis à l'heure séparément , mais seulement ensemble et en synchronisme.The movements for such watches are known per se. For example, patent CH 57805 describes a double pocket watch face which indicates on each side a different time by means of a movement comprising two opposite displays whose hands rotate around an axis passing through the center of the watch. The hands of one of the displays are rotated in a conventional manner, opposite one of the faces of the movement, by a minute shaft fitted with greasy friction in the shaft of the center wheel, also called the minutes, while the hands of the other display are driven, in the opposite direction, by a gear train which meshes with a return pinion fixed opposite the other face of the movement on the same minutes shaft. The presence of the return pinion, disposed between the other face of the movement and the hands of the other display, all the more increases the total thickness of the caliber while introducing additional play in the movement of the hands. If this is acceptable in the case of a pocket watch, such an increase in thickness would on the other hand constitute a significant drawback in the production of a wristwatch in which the height is of great importance from an aesthetic point of view. Another disadvantage of this movement comes from the fact that the displays cannot be set separately, but only together and in synchronism.

Un autre mouvement à deux affichages opposés a été divulgué dans la demande de brevet EP 0504623. Dans cette réalisation, les aiguilles de l'un des affichages sont les aiguilles d'un affichage conventionnel, entraînées de manière connue par un rouage de minuterie à partir de l'arbre des minutes. Les aiguilles de l'autre affichage sont mises en rotation, en sens inverse des aiguilles précédentes, par un train d'engrenages disposé à plat, de manière à réduire autant que possible la surépaisseur, sur l'autre face du mouvement. La transmission du mouvement de rotation d'un mobile du rouage de minuterie aux mobiles disposés sur l'autre face, est obtenue au moyen d'une chaussée lanternée traversante joignant les deux faces du mouvement et coopérant avec un poussoir de commande extérieur. Si cette disposition des mobiles permet d'obtenir un mouvement de faible épaisseur, par contre la longueur du train d'engrenage introduit un jeu, encore plus important que dans le cas précédent, dans l'entraînement des aiguilles de l'autre affichage pendant la mise à l'heure synchrone des deux affichages. Pour rendre ce jeu acceptable, les roues dentées doivent présenter un faible ébat et répondre donc à des normes de fabrication sévères, entraînant un coût de fabrication élevé. La mise à l'heure de chaque affichage séparément est possible dans cette réalisation, mais cela grâce au poussoir de commande dont la présente complique la construction du mouvement aussi bien que de celle du boîtier de la montre.Another movement with two opposite displays has been disclosed in patent application EP 0504623. In this embodiment, the hands of one of the displays are the hands of a conventional display, driven in a known manner by a gear train from from the minute tree. The hands of the other display are rotated, clockwise reverse of the previous needles, by a gear train arranged flat, so as to reduce the excess thickness as much as possible, on the other side of the movement. The transmission of the rotational movement of a moving part of the timer train to the moving parts arranged on the other face, is obtained by means of a through-lanterned carriageway joining the two faces of the movement and cooperating with an external control pusher. If this arrangement of the mobiles makes it possible to obtain a movement of small thickness, on the other hand the length of the gear train introduces a clearance, even greater than in the previous case, in the driving of the hands of the other display during the synchronization of the two displays. To make this play acceptable, the gears must have a low clearance and therefore meet strict manufacturing standards, resulting in a high manufacturing cost. Setting the time of each display separately is possible in this embodiment, but this thanks to the control button, the present of which complicates the construction of the movement as well as that of the watch case.

Les deux réalisations qui viennent d'être décrites, qui concernent aussi bien les mouvements analogiques mécaniques qu'électroniques, présentent donc des inconvénients importants que la présente invention, qui ne s'applique par contre qu'aux mouvements mécaniques à balancier-spiral, se propose de pallier.The two embodiments which have just been described, which relate to both mechanical and electronic analog movements, therefore have significant drawbacks that the present invention, which on the other hand only applies to mechanical movements with balance-spring, proposes to compensate.

Pour atteindre cet objectif, le mouvement d'horlogerie à balancier-spiral selon l'invention, délimité par deux faces principales opposées sensiblement planes et parallèles, comportant deux affichages de l'heure à aiguilles, un barillet à ressort, un train d'engrenages comprenant une roue dentée grande moyenne solidaire d'un pignon engrenant avec le barillet, une roue dentée moyenne solidaire d'un pignon engrenant avec la roue grande moyenne et une roue dentée des minutes effectuant un tour par heure, et des moyens pour transmettre l'énergie accumulée dans le ressort au système balancier-spiral et pour entraîner en rotation les aiguilles de l'un des affichages en regard de l'une des faces, un autre train d'engrenages ayant pour fonction d'entraîner en synchronisme avec ces aiguilles les aiguilles de l'autre afffichage en regard de l'autre face, des moyens de remontage du ressort du barillet, et ces moyens de mises à l'heure des deux affichages, est particulièrement remarquable en ce que l'autre train d'engrenages comporte une roue dentée de renvoi qui est solidaire en rotation de la roue grande moyenne.To achieve this objective, the timepiece-spring movement according to the invention, delimited by two opposite main faces that are substantially planar and parallel, comprising two hour displays with hands, a spring barrel, a gear train comprising a large medium gear wheel integral with a pinion meshing with the barrel, a medium gear wheel integral with a pinion meshing with the large wheel mean and a gear for the minutes making one revolution per hour, and means for transmitting the energy accumulated in the spring to the balance-spring system and for rotating the hands of one of the displays opposite one of the faces, another gear train having the function of driving the needles of the other display opposite the other face in synchronism with these needles, means for winding up the barrel spring, and these setting means 'time of the two displays, is particularly remarkable in that the other gear train includes a gear toothed return which is integral in rotation with the large medium wheel.

Un avantage de l'invention provient de ce que le train d'engrenages entraînant les aiguilles de l'autre affichage comporte très peu de mobiles, et que ces mobiles sont disposés de manière à augmenter le moins possible la hauteur du mouvement.An advantage of the invention comes from the fact that the gear train driving the needles of the other display has very few mobiles, and that these mobiles are arranged so as to increase the height of the movement as little as possible.

Un autre avantage résulte du fait que les aiguilles des deux affichages présentent le même jeu avec des rouages de même qualité pour les deux trains d'engrenages.Another advantage results from the fact that the hands of the two displays have the same play with cogs of the same quality for the two gear trains.

D'autres caractéristiques et avantages du mouvement selon la présente invention ressortiront de la description qui va suivre, faite en regard du dessin annexé et donnant, à titre explicatif mais nullement limitatif, un exemple de réalisation d'un tel mouvement. Sur ce dessin, où les mêmes références se rapportent à des éléments analogues :

  • la fig. 1 est une vue de profil d'une forme de réalisation du mouvement selon l'invention comportant en regard de chacune de ses faces principales un affichage de l'heure par aiguilles, et une masse oscillante de remontage automatique;
  • la fig. 2 représente, dans une vue en coupe par un plan passant par l'axe de rotation des aiguilles, les principaux mobiles et organes de commande du mouvement; et
  • la fig. 3 montre les deux parties principales du mouvement séparées l'une de l'autre.
Other characteristics and advantages of the movement according to the present invention will emerge from the description which follows, made with reference to the appended drawing and giving, by way of explanatory but in no way limiting, an exemplary embodiment of such a movement. In this drawing, where the same references relate to similar elements:
  • fig. 1 is a side view of an embodiment of the movement according to the invention comprising, opposite each of its main faces, a display of the time by hands, and an oscillating weight for automatic winding;
  • fig. 2 shows, in a sectional view through a plane passing through the axis of rotation of the hands, the main mobiles and movement control members; and
  • fig. 3 shows the two main parts of the movement separated from each other.

Une forme de réalisation d'un mouvement d'horlogerie mécanique à balancier-spiral à deux affichages de l'heure selon l'invention est représenté sur la fig. 1. Les références 1 et 2 désignent respectivement les deux faces principales, sensiblement planes et parallèles, du mouvement. En regard de la face 1, ou première face, est disposé un affichage analogique de l'heure, ou premier affichage, constituant l'affichage conventionnel et comportant les aiguilles des heures 3h, des minutes 3m et des secondes 3s se déplaçant devant un cadran 4. En regard de la face 2, ou deuxième face, se trouve un autre affichage analogique de l'heure, ou deuxième affichage, comportant les aiguilles des heures 5h et des minutes 5m, se déplacent en synchronisme mais en sens inverse des aiguilles précédentes et permettant d'indiquer l'heure dans un fuseau horaire quelconque. Dans la présente réalisation les aiguilles des deux affichages pivotent autour d'un axe commun xx'. Une tige de mise à l'heure 6 à trois positions axiales, permet de corriger séparément les indications des deux affichages, et de remonter le ressort dans un mouvement manuel, mais dans le cas présent il s'agit d'un mouvement automatique comportant une masse oscillante 7.An embodiment of a mechanical timepiece movement with balance-spring with two time displays according to the invention is shown in FIG. 1. References 1 and 2 respectively designate the two main faces, substantially planar and parallel, of the movement. Opposite side 1, or first side, is arranged an analog time display, or first display, constituting the conventional display and comprising the hours hands 3h, minutes 3m and seconds 3s moving in front of a dial 4. Next to side 2, or second side, is another analog time display, or second display, comprising the 5h and 5m hour hands, move in synchronism but in the opposite direction to the previous hands and to indicate the time in any time zone. In the present embodiment, the hands of the two displays pivot around of a common axis xx '. A time-setting rod 6 with three axial positions allows the indications of the two displays to be corrected separately, and the spring to be wound up in a manual movement, but in this case it is an automatic movement comprising a oscillating weight 7.

La fig. 2 montre dans une vue en coupe la disposition des principaux organes du mouvement. La centure d'un barillet à ressort 10 est en prise avec un pignon 11 solidaire d'une roue dentée grande moyenne 12, le pignon et la roue étant supportés par un arbre de grande moyenne 13 pivotant dans des paliers 14. Un pignon 15, solidaire d'une roue dentée moyenne 16, engrène, d'une part, avec la roue grande moyenne 12, et d'autre part, avec une roue dentée des minutes 17, appelée aussi roue de centre, effectuant un tour par heure. La roue des minutes entraîne en rotation, par l'intermédiaire d'une chaussée à friction 18 comportant un pignon 19, l'aiguille des minutes 3m du premier affichage de l'heure. Un pignon 20, fixé sur une roue dentée de minuterie 21 venant en prise avec le pignon 19 de la chaussée à friction, engrène avec une roue dentée des heures 22 effectuant un tour en 12 ou 24 heures et entraînant directement en rotation l'aiguille des heures 3h. La roue moyenne 16 est, pour sa part, en prise avec un pignon 25 solidaire d'une roue dentée des secondes 26. Le pignon 25 et la roue 26 effectuent un tour par minute et ils sont supportés par un axe 27 sur lequel est fixée l'aiguille des secondes 3s. La roue des secondes 26 engrène avec un pignon 30 fixé sur un arbre 31 supportant une roue d'échappement 32. Enfin une ancre 33, coopérant avec la roue d'échappement, transmet l'énergie accumulée dans le ressort du barillet 10 au système régulateur à balancier-spiral non représenté.Fig. 2 shows in a sectional view the arrangement of the main organs of the movement. The centering of a spring barrel 10 is engaged with a pinion 11 integral with a large medium gear 12, the pinion and the wheel being supported by a large medium shaft 13 pivoting in bearings 14. A pinion 15, integral with a medium gear 16, meshes, on the one hand, with the large medium wheel 12, and on the other hand, with a minutes gear 17, also called center wheel, performing one revolution per hour. The minute wheel rotates, by means of a friction carriageway 18 comprising a pinion 19, the minute hand 3m of the first time display. A pinion 20, fixed on a timing gear 21 engaging the pinion 19 of the friction road, meshes with an hour gear 22 making a revolution in 12 or 24 hours and directly driving the needle of the hours 3h. The mean wheel 16 is, for its part, engaged with a pinion 25 integral with a toothed wheel of the seconds 26. The pinion 25 and the wheel 26 perform one revolution per minute and they are supported by an axis 27 on which is fixed the seconds hand 3s. The seconds wheel 26 meshes with a pinion 30 fixed on a shaft 31 supporting an escape wheel 32. Finally an anchor 33, cooperating with the escape wheel, transmits the energy accumulated in the spring of the barrel 10 to balance-spring regulator system not shown.

Les mobiles qui viennent d'être décrits, et leurs liaisons cinématiques, forment un train d'engrenages qui est bien connu de l'art antérieur. Il faut relever que toutes les roues de ce premier train d'engrenages, en particulier la roue de grande moyenne, mais à l'exception des roues des minutes et des heures, sont sous tension. Cela veut dire qu'elles transmettent en permanence un couple au mobile suivant, ce qui a pour effet d'éliminer tout ébat entre les dentures de deux mobiles en prise directe.The mobiles which have just been described, and their kinematic connections, form a train of gears which is well known in the prior art. It should be noted that all the wheels of this first gear train, in particular the large medium wheel, but with the exception of the minutes and hours wheels, are under tension. This means that they permanently transmit a torque to the next mobile, which has the effect of eliminating any jerking between the teeth of two mobile directly engaged.

Les aiguilles 5h et 5m du deuxième affichage sont entraînées, de leur côté, par un autre train d'engrenages. Ce deuxième train d'engrenages, qui constitue l'invention proprement dite, est décrit ci-après.The hands 5h and 5m of the second display are driven, for their part, by another gear train. This second gear train, which constitutes the invention proper, is described below.

Sur l'arbre 13 supportant la roue grande moyenne 12, est fixée une roue dentée de renvoi 35. La roue 35, solidaire en rotation de la roue 12, engrène avec une roue dentée des minutes 36 qui effectue une rotation par heure autour de l'axe xx'. La roue 36 est similaire à la roue des minutes 17 du premier train d'engrenages, et elle entraîne de la même manière que cette dernière l'aiguille des minutes 5m du deuxième affichage au moyen d'une chaussée à friction 37 semblable à la chaussée 18. Enfin une roue dentée de minuterie 38, engrenant avec un pignon 39 de la chaussée 37, entraîne par l'intermédiaire d'un pignon 40 une roue des heures 41 supportant l'aiguille des heures 5h par l'intermédiaire d'un canon 42.On the shaft 13 supporting the large medium wheel 12, is fixed a return toothed wheel 35. The wheel 35, integral in rotation with the wheel 12, meshes with a toothed minute wheel 36 which rotates per hour around the 'axis xx'. The wheel 36 is similar to the minute wheel 17 of the first gear train, and it drives in the same way as the latter the minute hand 5m of the second display by means of a friction carriageway 37 similar to the carriageway 18. Finally, a timer gear 38, meshing with a pinion 39 of the roadway 37, drives via a pinion 40 an hour wheel 41 supporting the hour hand 5h via a barrel 42.

Le nombre restreint de mobiles du deuxième train d'engrenages, et leur disposition dans le même plan, ont pour conséquence que ces mobiles prennent une place en hauteur qui est réduite au minimum. L'absence de jeu de la roue de renvoi 35, d'autre part, fait que les aiguilles des deux affichages présentent le même faible ébat angulaire.The limited number of mobiles of the second gear train, and their arrangement in the same plane, have the consequence that these mobiles take up a space in height which is reduced to a minimum. The absence of play of the deflection wheel 35, on the other hand, means that the hands of the two displays have the same low angular clearance.

La correction des indications de chaque affichage de l'heure séparément est obtenu au moyen de la tige de mise à l'heure 6, pouvant occuper trois positions axiales, et d'un mécanisme approprié connu en soi. A cet effet la tige 6 comporte une partie cylindrique 45, et une partie à section carrée 46. Sur la partie cylindrique pivote librement un pignon 47 ayant une ouverture centrale carrée et une denture périphérique radiale 48, la denture venant en prise avec la première roue dentée d'un train d'engrenages formé des roues dentées 49, 50 et 51, la dernière roue engrenant avec la roue de minuterie 38. La partie carrée 46 de la tige 6, de son côté, supporte et entraîne en rotation un pignon 52 coulissant longitudinalement sur la tige et comportant, une denture axiale 53 et une gorge circulaire 54. Une roue dentée 55 engrène avec la roue de minuterie 21 et, suivant la position axiale du pignon 52, avec la denture 53 de ce dernier. Enfin dans la gorge 54 est disposée l'extrémité d'une bascule 56 destinée à déplacer axialement le pignon 52 en dépendance de la position axiale de la tige 6.The correction of the indications of each time display separately is obtained by means of the time setting rod 6, which can occupy three axial positions, and an appropriate mechanism known per se. For this purpose the rod 6 has a cylindrical part 45, and a square section part 46. On the cylindrical part freely pivots a pinion 47 having a square central opening and a radial peripheral toothing 48, the toothing engaging the first wheel. cog of a gear train formed of toothed wheels 49, 50 and 51, the last wheel meshing with the timer wheel 38. The square part 46 of the rod 6, on its side, supports and rotates a pinion 52 sliding longitudinally on the rod and comprising an axial toothing 53 and a circular groove 54. A toothed wheel 55 meshes with the timer wheel 21 and, according to the axial position of the pinion 52, with the toothing 53 of the latter. Finally in the groove 54 is disposed the end of a rocker 56 intended to move the pinion 52 axially in dependence on the axial position of the rod 6.

Sur les fig. 2 et 3, la tige de mise à l'heure 6 est représentée dans la position poussée, ou position neutre, dans laquelle sa rotation n'entraîne aucune modification des affichages. En effet, le pignon 47 n'est pas entraîné par la partie à section carrée 46 de la tige, alors que le pignon 52, tout en pivotant, n'engrène pas avec la roue 55. Dans la première position tirée de la tige 6, la partie 46 vient juste à fleur du pignon 47, tandis que la bascule 56 déplace le pignon 52 de manière que sa denture 53 vienne en prise avec celle de la roue 55. Une rotation de la tige 6 entraîne alors la roue 55 et les aiguilles 3m et 3h du premier affichage, sans avoir d'effet sur celles du deuxième affichage. En déplaçant la tige 6 dans la deuxième position tirée, la partie à section carrée 46 pénètre dans l'ouverture carrée du pignon 47, tandis que la bascule 56 déplace le pignon 52 de manière à éloigner la denture 53 de la roue 55. Dans ces conditions, une rotation de la tige 6 a pour effet d'entraîner le pignon 47 et donc les aiguilles 5m et 5h du deuxième affichage, sans déplacer celles du premier affichage. Il serait aussi possible d'agencer le mécanisme pour que la tige de mise à l'heure 6 corrige l'un des affichages dans l'une des positions tirées, et les deux affichages en synchronimse dans l'autre position tirée. Bien entendu si le mouvement comportait un dispositif calendrier, la tige 6 devrait pouvoir occuper trois positions tirées, la première pour mettre le calendrier à la date, les deuxième et troisième positions correspondant alors respectivement aux première et deuxième positions qui viennent d'être décrites.In fig. 2 and 3, the time setting rod 6 is shown in the pushed position, or neutral position, in which its rotation does not cause any modification of the displays. Indeed, the pinion 47 is not driven by the square section 46 of the rod, while the pinion 52, while pivoting, does not mesh with the wheel 55. In the first position pulled from the rod 6 , the part 46 is just flush with the pinion 47, while the rocker 56 moves the pinion 52 so that its teeth 53 come into engagement with that of the wheel 55. A rotation of the rod 6 then drives the wheel 55 and the hands 3m and 3h of the first display, without having any effect on those of the second display. By moving the rod 6 into the second pulled position, the square section 46 enters the square opening of the pinion 47, while the rocker 56 moves the pinion 52 so as to move the teeth 53 away from the wheel 55. In these conditions, a rotation of the rod 6 has the effect of driving the pinion 47 and therefore the hands 5m and 5h of the second display, without moving those of the first display. It would also be possible to arrange the mechanism so that the time setting rod 6 corrects one of the displays in one of the pulled positions, and the two displays in synchronism in the other pulled position. Of course if the movement included a calendar device, the rod 6 should be able to occupy three drawn positions, the first to set the calendar to the date, the second and third positions then corresponding respectively to the first and second positions which have just been described.

Un pont 60 supporte la masse oscillante 7 de type connu. Disposée entre la face principale 2 et les aiguilles 5m et 5h, elle pivote autour de l'axe xx'. Un trou central pratiqué dans cette masse donne un passage aux organes entraînant les aiguilles. Un rouage non représenté, reliant la masse 7 au barillet 10, assure en outre, de manière connu, le remontage du ressort. Afin de faciliter l'assemblage du mouvement, les organes référencés 36 à 41 et 51, sont également disposés sur le pont 60. Il suffit alors d'éloigner le pont 60, comme cela est représenté sur la fig 3, pour donner accès aux organes précédemment cités.A bridge 60 supports the oscillating mass 7 of known type. Arranged between the main face 2 and the hands 5m and 5h, it pivots around the axis xx '. A central hole in this mass gives passage to the organs driving the needles. A cog, not shown, connecting the mass 7 to the barrel 10, moreover, in known manner, reassembles the spring. In order to facilitate the assembly of the movement, the members referenced 36 to 41 and 51, are also arranged on the bridge 60. It then suffices to move the bridge 60 away, as shown in FIG. 3, to give access to the members previously cited.

Il va de soi que le mouvement d'horlogerie qui vient d'être décrit peut subir encore d'autres modifications que celles qui ont déjà été mentionnées, et se présenter sous d'autres variantes, évidentes à l'homme du métier, sans sortir du cadre de la présente invention. En particulier l'aiguille des secondes 3s pourrait pivoter autour d'un axe différent de l'axe xx', et se présenter par exemple sous la forme d'une petite aiguille disposée à 6 heures. A la place des aiguilles 5m et 5h, le deuxième affichage pourrait comporter une aiguille unique 61, représentée sur la fig. 3, faisant un tour par 24 heures et indiquant les fuseaux horaires sur un cadran 62. Bien entendu le mouvement pourrait être du type à remontage manuel, et dans ce cas les aiguilles 5m, 5h, 61 pourraient pivoter également autour d'un axe autre que l'axe xx'.It goes without saying that the timepiece movement which has just been described can undergo further modifications other than those which have already been mentioned, and present themselves in other variants, obvious to those skilled in the art, without going out of the scope of the present invention. In particular, the seconds hand 3s could pivot around an axis different from the axis xx ', and could for example be in the form of a small hand placed at 6 o'clock. Instead of the 5m and 5h hands, the second display could include a single hand 61, shown in FIG. 3, making one revolution per 24 hours and indicating the time zones on a dial 62. Of course the movement could be of the manual winding type, and in this case the hands 5m, 5h, 61 could also pivot around an axis other than the axis xx '.

Claims (7)

  1. Sprung balance horological movement, bounded by two substantially planar and parallel opposite principal faces, including two time displays employing hands, a spring barrel (10), a gear train comprising a toothed center wheel (12) fixed to a pinion (11) meshing with said barrel, a toothed third wheel (16) fixed to a pinion (15) meshing with said center wheel and a toothed minutes wheel (17) effecting one revolution per hour, and means for transmitting the energy accumulated in the spring of the sprung balance system and for driving in rotation the hands (3h, 3m, 3s) of one of the displays opposite one (1) of said faces, another gear train having as function to drive in synchronism with said hands the hands (5h, 5m) of the other display opposite the other face (2), means for winding the barrel spring, and means for the time setting of said displays, characterized in that said other gear train includes a toothed intermediate wheel (35) which is fixed in rotation to said center wheel (12).
  2. Movement according to claim 1, characterized in that the hands of each display turn in the sense opposite to that of the other display around a common axis (xx) arranged perpendicular to said faces (1, 2).
  3. Movement according to either of the preceding claims, characterized in that said other display comprises a single hand (61) effecting one revolution per 24 hours in order to indicate the hour in different time zones.
  4. Movement according to any of the preceding claims, characterized in that said winding means constitute an automatic winding arrangement including an oscillating mass (7) arranged between the other face (2) and the hands (5h, 5m) of the other display, which exhibits an opening around its axis of rotation for the passage of elements supporting at least one hand of said other display, and a wheel train for transmitting the movements of said mass to the barrel spring in order to wind it.
  5. Movement according to any of the preceding claims, characterized in that said other gear train comprises said toothed intermediate wheel (35), a toothed minutes wheel (36) meshing with said intermediate wheel, a cannon (37) fixed in rotation with said minutes wheel and supporting the minutes hand (5m), a toothed motion-work wheel (38) fixed to a pinion (40) and meshing with a pinion (39) fixed on said cannon, and a toothed hours wheel (41) supporting the hours hand (5h) by means of a pipe (42) and meshing with the motion-work wheel.
  6. Movement according to claims 4 and 5, characterized in that it further includes a bridge (60) supporting said oscillating mass (7), and said minutes wheel (36), said cannon (37), said motion-work wheel (38) and said hours wheel (41) of said other gear train.
  7. Movement according to any of the preceding claims, characterized in that said time setting means comprise a time setting stem (6) with three axial positions, the first position being neutral, and a mechanism (45, 46) having as function to transmit the rotation of the stem, when the latter is in the second position, to a toothed wheel (21) of said gear train in order to set the time of the display without modifying the indication of the other display, and, to a toothed wheel (38) of said other gear train in order to set the time of the other display without modifying the indication of the display.
EP93120087A 1993-01-29 1993-12-13 Clockwork-movement with two opposite analog displays Expired - Lifetime EP0608535B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH265/93A CH684620B5 (en) 1993-01-29 1993-01-29 clockwork with two opposite analog displays.
CH265/93 1993-01-29

Publications (2)

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EP0608535A1 EP0608535A1 (en) 1994-08-03
EP0608535B1 true EP0608535B1 (en) 1997-04-16

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EP (1) EP0608535B1 (en)
JP (1) JP3328661B2 (en)
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Also Published As

Publication number Publication date
EP0608535A1 (en) 1994-08-03
US5377171A (en) 1994-12-27
DE69309884T2 (en) 1997-11-06
DE69309884D1 (en) 1997-05-22
CH684620B5 (en) 1995-05-15
CH684620GA3 (en) 1994-11-15
JPH06273541A (en) 1994-09-30
JP3328661B2 (en) 2002-09-30

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