EP1445671B1 - Clockwork movement provided with double faced analog display - Google Patents

Clockwork movement provided with double faced analog display Download PDF

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Publication number
EP1445671B1
EP1445671B1 EP20030405061 EP03405061A EP1445671B1 EP 1445671 B1 EP1445671 B1 EP 1445671B1 EP 20030405061 EP20030405061 EP 20030405061 EP 03405061 A EP03405061 A EP 03405061A EP 1445671 B1 EP1445671 B1 EP 1445671B1
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EP
European Patent Office
Prior art keywords
seconds
display
hand
teeth
wheel
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German (de)
French (fr)
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EP1445671A1 (en
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Walter Schlup
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Individual
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Individual
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Priority to DE60305432T priority Critical patent/DE60305432D1/en
Priority to EP20030405061 priority patent/EP1445671B1/en
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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
    • 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

Definitions

  • Some of these movements comprise, in addition, a second display disposed on their second face, the needles of which move in synchronism with the first display.
  • a second display disposed on their second face, the needles of which move in synchronism with the first display.
  • One of the displays is the main display indicating the hours, minutes, and seconds of the local time zone using hands, while the second display on the oscillating weight side gives only the hours and minutes of a different time zone that can be chosen at will.
  • the hands of the two displays each pivot in the conventional direction opposite the respective dials, but the absence of the second hand on the second display is, in this embodiment, a drawback because it is necessary to return the watch to obtain the l hour to the nearest second.
  • both needles are fixed on the same shaft, so that if the second hand of one of the displays rotates in the correct direction, the seconds hand of the second display will turn in the wrong direction .
  • This can be a source of reading error.
  • such a solution despite the simplicity of its realization, can not, at best, be suitable only for fancy watches.
  • the object of the present invention is to provide a movement with two opposing displays having a simple and inexpensive mechanism for driving in the correct direction, from a mobile of the main display, the seconds hand of the second display.
  • An advantage of the invention is that it uses only one idler wheel between the two wheels of the seconds, which simplifies the construction of the movement while decreasing the play of the second hand seconds.
  • Such a movement may advantageously comprise a second gear set, driven by a mobile of the first gear set, comprising mobiles intended to drive in synchronism with the hands of the first display of the hour and minute hands.
  • the second display disposed opposite the other side of the movement.
  • the movement may comprise, in addition, an oscillating mass pivotally mounted on the frame around the pivot axis of the second wheels.
  • the mass is advantageously provided with an opening in its central part, the mobile carrying the needles of the second display and the wheel bearing the second hand of the seconds being engaged in this opening.
  • the teeth of the second wheels are oriented axially and the teeth of the return wheel radially.
  • the teeth of the second wheels are oriented radially and the teeth of the return wheel axially.
  • Another advantage results from the possibility of turning the idler wheel in the existing bridge of the movement necessary to support the shafts of the wheels of the seconds.
  • FIGS. 1 and 2 represent the movement according to the invention, obtained by the modification of the movement cited in the document EP 511530. It is an automatic sprung-balance movement equipped with a barrel 10 which constitutes its source energy. This movement comprises a frame 11 on which are mounted its moving parts. It is delimited by two substantially plane and parallel faces, respectively referenced 1 and 2. In front of the first face 1 is arranged a first analog time display comprising hands of hours 3h, minutes 3m and seconds 3s, and which is the main display of the watch.
  • an oscillating mass 7 pivotally mounted by means of a ball bearing 12, on a tube 13 formed on the frame 11, and 5h hours hands, 5m minutes and 100 seconds seconds.
  • a second display Opposite the second face 2 is an oscillating mass 7 pivotally mounted by means of a ball bearing 12, on a tube 13 formed on the frame 11, and 5h hours hands, 5m minutes and 100 seconds seconds.
  • the oscillating mass 7 and the needles pivot about a common axis of revolution xx 'passing through the center of the movement.
  • the hands of a display rotate in opposite directions to those of the other.
  • a time-setting rod 6 makes it possible, in an axial position, to move the hour and minute hands of the two displays in synchronism, and, in another axial position, the hands of one of the displays independently of those from the other display.
  • This arrangement is advantageous for a watch pivotally mounted in a housing around the axis 3-9 hours. If pivoting is done around the 6-12 hour axis, two time setting rods would be preferable, each rod controlling one of the displays. Such an embodiment being within the reach of those skilled in the art, it will not be described.
  • the seconds hand 100 has been added to the original movement. It is mounted on a shaft 101 which passes through the shaft 27 supporting the minute hand 5m. At one end of the shaft 101 is fixed the needle 100, while the other end of this shaft pivots in a stone, supported by an intermediate bridge 102, part of the frame 11, and in which also pivots an end of the shaft 27, integral in rotation with the seconds hand 3s of the first display.
  • the bridge 102 already existed in the original movement. It is not represented in the cited document, but it is the one that supports the pivoting stone of the shaft 27. In a movement with two opposite concentric displays, such a bridge is generally necessary to support at least the shaft of the seconds hand of the first display.
  • a second gear wheel 26, or first seconds wheel which has a radial toothing 26 'meshing with a pinion 30 in order to drive in rotation the wheel of exhaust 32.
  • the wheel 26 is also used in the present invention to set in motion the second hand 100.
  • a second gear 103 seconds is fixed for this purpose on the shaft 101, opposite the bridge 102.
  • the wheel 103 comprises in addition to an axial toothing 105.
  • the teeth 104 and 105 face each other. , on both sides of the bridge 102.
  • a gear wheel 107 which has a radial toothing 108 engaging with the teeth 104 and 105.
  • the wheel 107 is pivotally mounted on the bridge 102 around a axis of revolution oriented perpendicularly to the axis xx 'and intersecting this axis.
  • the bridge 102 has a removable portion 109 into which penetrates one end of the shaft of the wheel.
  • the return wheel 107 may be made of metal or plastic and have a diameter close to the thickness of the bridge 102, resulting in a small increase in the height of the movement. As the wheel 107 is, in addition, the only mobile link between the wheels 26 and 103, the play of the needle 100 is reduced to its lowest possible value.
  • the return wheel 107 has an axial toothing 110, and the second wheel 103 a radial toothing 111, identical in diameter and number of teeth at the radial toothing 26 'of the first seconds wheel 26.
  • the return wheel 107 is pivotally mounted in the removable portion 109 of the bridge 102 so as to engage the teeth 111 and 26' of the wheels 103 and 26, and realize in this way the transmission of the rotational movement from one wheel to the other in the desired direction. Since the diameter of the wheel 107 is only slightly greater than the height of the bridge 102, this solution makes it possible to further reduce the height of the movement.
  • the movement is an analog electronic movement comprising a mobile running one revolution per minute and supporting the second hand of the main display
  • the second hand of the other display can, of course, also be rotated, as in the embodiment described, by a single return wheel.

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

Description

La présente invention concerne un mouvement d'horlogerie mécanique ou électronique, notamment pour montre, délimité par deux faces principales opposées, sensiblement planes et parallèles. Ce mouvement comprend :

  • un bâti,
  • une source d'énergie,
  • un premier train d'engrenages, mû par ladite source, destiné à entraîner les aiguilles d'un premier affichage de l'heure disposé en regard de l'une des faces et comportant une roue dentée des secondes effectuant un tour par minute.
The present invention relates to a mechanical or electronic clockwork, in particular for a watch, delimited by two opposite main faces, substantially flat and parallel. This movement includes:
  • a frame,
  • a source of energy,
  • a first gear train, driven by said source, for driving the hands of a first time display disposed opposite one of the faces and having a gear wheel seconds performing one revolution per minute.

Certains de ces mouvements comportent, en outre, un deuxième affichage disposé sur leur deuxième face, dont les aiguilles avancent en synchronisme avec le premier affichage. Un tel mouvement, décrit dans le brevet EP 608535, ou le brevet correspondant US 5377171, est de type mécanique automatique à deux affichages opposés et concentriques.Some of these movements comprise, in addition, a second display disposed on their second face, the needles of which move in synchronism with the first display. Such a movement, described in patent EP 608535, or the corresponding patent US 5377171, is of automatic mechanical type with two opposing and concentric displays.

L'un des affichages est l'affichage principal indiquant, à l'aide d'aiguilles, les heures, les minutes et les secondes du fuseau horaire local, alors que le deuxième affichage, disposé du côté de la masse oscillante, ne donne que les heures et les minutes d'un fuseau horaire différent pouvant être choisi à volonté. Les aiguilles des deux affichages pivotent chacune dans le sens conventionnel en regard des cadrans respectifs, mais l'absence de l'aiguille des secondes sur le deuxième affichage constitue, dans cette réalisation, un inconvénient car il est nécessaire de retourner la montre pour obtenir l'heure à la seconde près.One of the displays is the main display indicating the hours, minutes, and seconds of the local time zone using hands, while the second display on the oscillating weight side gives only the hours and minutes of a different time zone that can be chosen at will. The hands of the two displays each pivot in the conventional direction opposite the respective dials, but the absence of the second hand on the second display is, in this embodiment, a drawback because it is necessary to return the watch to obtain the l hour to the nearest second.

Dans la demande de brevet EP 511530, cette difficulté est surmontée car les deux affichages comportent une aiguille des secondes.In the patent application EP 511530, this difficulty is overcome because the two displays comprise a second hand.

Cependant dans ce cas, les deux aiguilles sont fixées sur le même arbre, ce qui fait que si l'aiguille des secondes de l'un des affichages tourne dans le sens correct, l'aiguille des secondes du deuxième affichage tournera dans le mauvais sens. Cela peut être une source d'erreur de lecture. Pour cette raison une telle solution, malgré la simplicité de sa réalisation, ne peut, au mieux, convenir que pour des montres de fantaisie.However, in this case, both needles are fixed on the same shaft, so that if the second hand of one of the displays rotates in the correct direction, the seconds hand of the second display will turn in the wrong direction . This can be a source of reading error. For this reason such a solution, despite the simplicity of its realization, can not, at best, be suitable only for fancy watches.

L'inversion du sens de rotation de l'aiguille des secondes du deuxième affichage du mouvement décrit dans le dernier document cité peut être obtenue de manière connue au moyen d'un train d'engrenages supplémentaire commandé par la roue des secondes entraînant l'aiguille des secondes de l'affichage principal. Cependant la réalisation d'un tel train d'engrenages au moyen des techniques horlogères classiques, où tous les mobiles pivotent autour d'axes orientés perpendiculairement aux faces principales du mouvement, demanderait deux roues dentées de renvoi, plus une roue dentée des secondes solidaire de la deuxième aiguille des secondes, aiguille dont le sens de rotation doit être inversé. Il est évident que l'utilisation d'un tel train d'engrenages ne ferait qu'augmenter encore la difficulté de réalisation, l'encombrement et le prix d'un mouvement déjà complexe par lui-même.The reversal of the direction of rotation of the seconds hand of the second display of the movement described in the last cited document can be obtained in known manner by means of an additional gear train controlled by the second wheel driving the needle seconds of the main display. However, the realization of such a gear train using conventional watchmaking techniques, where all the mobiles pivot about axes oriented perpendicularly to the main faces of the movement, would require two return gears, plus a cogwheel seconds attached to the second hand of seconds, needle whose direction of rotation must be reversed. It is obvious that the use of such a gear train would only further increase the difficulty of realization, the size and the price of a movement already complex by itself.

Le but de la présente invention est de proposer un mouvement à deux affichages opposés comportant un mécanisme simple et bon marché pour entraîner dans le sens correct, à partir d'un mobile de l'affichage principal, l'aiguille des secondes du deuxième affichage.The object of the present invention is to provide a movement with two opposing displays having a simple and inexpensive mechanism for driving in the correct direction, from a mobile of the main display, the seconds hand of the second display.

Pour atteindre cet objectif, le mouvement selon l'invention, délimité par deux faces principales opposées, sensiblement planes et parallèles, est du type comprenant :

  • un bâti,
  • une source d'énergie,
  • un premier train d'engrenages, mû par ladite source, destiné à entraîner les aiguilles d'un premier affichage de l'heure disposé en regard de l'une des faces et comportant une roue dentée des secondes effectuant un tour par minute.
To achieve this objective, the movement according to the invention, delimited by two opposite main faces, substantially planar and parallel, is of the type comprising:
  • a frame,
  • a source of energy,
  • a first gear train, driven by said source, for driving the hands of a first time display disposed facing one of the faces and having a gear wheel seconds performing one revolution per minute.

Selon l'invention telle que difinie dans la revendication 1, un tel mouvement est caractérisé en ce qu'il comprend, en outre :

  • une autre roue dentée des secondes destinée à entraîner une deuxième aiguille des secondes, les roues des secondes pivotant autour d'un axe de révolution commun orienté perpendiculairement aux faces du mouvement et ayant des dentures de même diamètre et de même nombre de dents, et
  • une roue dentée de renvoi, pivotant sur le bâti autour d'un axe de révolution disposé parallèlement aux faces du mouvement, dont la denture engrène avec les dentures desdites roues des secondes pour entraîner l'aiguille des secondes du deuxième affichage en sens inverse de l'aiguille des secondes du premier affichage.
According to the invention as defined in claim 1, such a movement is characterized in that it further comprises:
  • another second gear for driving a second second hand, the second wheels pivoting about a common axis of revolution oriented perpendicularly to the faces of the movement and having teeth of the same diameter and the same number of teeth, and
  • a toothed gear, pivoting on the frame about an axis of revolution arranged parallel to the faces of the movement, the gear meshes with the teeth of said second wheels to drive the seconds hand of the second display in the opposite direction of the second hand of the first display.

Un avantage de l'invention est qu'elle n'utilise qu'une seule roue dentée de renvoi entre les deux roues des secondes, ce qui simplifie la construction du mouvement tout en diminuant le jeu de la deuxième aiguille des secondes.An advantage of the invention is that it uses only one idler wheel between the two wheels of the seconds, which simplifies the construction of the movement while decreasing the play of the second hand seconds.

Il est évident qu'un tel mouvement peut avantageusement comprendre un deuxième train d'engrenages, mû par un mobile du premier train d'engrenages, comportant des mobiles destinés à entraîner en synchronisme avec les aiguilles du premier affichage des aiguilles des heures et des minutes du deuxième affichage disposé en regard de l'autre face du mouvement.It is obvious that such a movement may advantageously comprise a second gear set, driven by a mobile of the first gear set, comprising mobiles intended to drive in synchronism with the hands of the first display of the hour and minute hands. the second display disposed opposite the other side of the movement.

Dans le cas d'une montre automatique, le mouvement peut comporter, en outre, une masse oscillante montée pivotante sur le bâti autour de l'axe de pivotement des roues de secondes. La masse est avantageusement munie d'une ouverture dans sa partie centrale, les mobiles portant les aiguilles du deuxième affichage et la roue portant la deuxième aiguille des secondes étant engagés dans cette ouverture.In the case of an automatic watch, the movement may comprise, in addition, an oscillating mass pivotally mounted on the frame around the pivot axis of the second wheels. The mass is advantageously provided with an opening in its central part, the mobile carrying the needles of the second display and the wheel bearing the second hand of the seconds being engaged in this opening.

Dans une première variante, les dents des roues de secondes sont orientées axialement et les dents de la roue de renvoi radialement.In a first variant, the teeth of the second wheels are oriented axially and the teeth of the return wheel radially.

Dans une autre variante, les dents des roues de secondes sont orientées radialement et les dents de la roue de renvoi axialement.In another variant, the teeth of the second wheels are oriented radially and the teeth of the return wheel axially.

Un autre avantage résulte de la possibilité de faire pivoter la roue de renvoi dans le pont existant du mouvement nécessaire au soutien des arbres des roues des secondes.Another advantage results from the possibility of turning the idler wheel in the existing bridge of the movement necessary to support the shafts of the wheels of the seconds.

Encore d'autres avantages et caractéristiques 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'un mouvement automatique connu à deux affichages, complété par une aiguille des secondes selon l'invention dans le deuxième affichage;
  • la fig. 2 montre, dans une vue en coupe, le mouvement représenté sur la fig. 1, et une première forme de réalisation du mécanisme d'entraînement de l'aiguille des secondes du deuxième affichage;
  • la fig. 3 est une vue agrandie du mécanisme d'entraînement représenté sur la fig. 2,
  • la fig. 4 montre une autre forme de réalisation du mécanisme d'entraînement de l'aiguille des secondes du deuxième affichage; et
  • la fig. 5 est une vue en perspective du mécanisme d'entraînement représenté sur la fig. 4.
Still other advantages and characteristics of the movement according to the present invention will emerge from the description which follows, made with reference to the accompanying drawing and giving, by way of explanation but not limited to, an embodiment of such a movement. In this drawing, where the same references refer to similar elements:
  • fig. 1 is a side view of a known automatic movement with two displays, supplemented by a seconds hand according to the invention in the second display;
  • fig. 2 shows, in a sectional view, the movement shown in FIG. 1, and a first embodiment of the driving mechanism of the seconds hand of the second display;
  • fig. 3 is an enlarged view of the drive mechanism shown in FIG. 2
  • fig. 4 shows another embodiment of the seconds hand drive mechanism of the second display; and
  • fig. 5 is a perspective view of the drive mechanism shown in FIG. 4.

Les figures 1 et 2 représentent le mouvement selon l'invention, obtenu par la modification du mouvement cité dans le document EP 511530. Il s'agit d'un mouvement automatique à balancier-spiral muni d'un barillet 10 qui en constitue la source d'énergie. Ce mouvement comporte un bâti 11 sur lequel sont montées ses pièces mobiles. Il est délimité par deux faces sensiblement planes et parallèles, référencées respectivement 1 et 2. En regard de la première face 1 est disposé un premier affichage analogique de l'heure comportant des aiguilles des heures 3h, des minutes 3m et des secondes 3s, et qui constitue l'affichage principal de la montre.FIGS. 1 and 2 represent the movement according to the invention, obtained by the modification of the movement cited in the document EP 511530. It is an automatic sprung-balance movement equipped with a barrel 10 which constitutes its source energy. This movement comprises a frame 11 on which are mounted its moving parts. It is delimited by two substantially plane and parallel faces, respectively referenced 1 and 2. In front of the first face 1 is arranged a first analog time display comprising hands of hours 3h, minutes 3m and seconds 3s, and which is the main display of the watch.

En regard de la deuxième face 2 se trouve une masse oscillante 7 montée pivotante au moyen d'un roulement à billes 12, sur un tube 13 formé sur le bâti 11, et des aiguilles des heures 5h, des minutes 5m et des secondes 100 d'un deuxième affichage. La masse oscillante 7 et les aiguilles pivotent autour d'un axe de révolution commun xx' passant par le centre du mouvement. Toutefois, les aiguilles d'un affichage pivotent en sens inverse de celles de l'autre.Opposite the second face 2 is an oscillating mass 7 pivotally mounted by means of a ball bearing 12, on a tube 13 formed on the frame 11, and 5h hours hands, 5m minutes and 100 seconds seconds. a second display. The oscillating mass 7 and the needles pivot about a common axis of revolution xx 'passing through the center of the movement. However, the hands of a display rotate in opposite directions to those of the other.

Enfin une tige de mise à l'heure 6 permet, dans une position axiale, de déplacer les aiguilles des heures et des minutes des deux affichages en synchronisme, et, dans une autre position axiale, les aiguilles d'un des affichages indépendamment de celles de l'autre affichage. Cette disposition est avantageuse pour une montre montée pivotante dans un boîtier autour de l'axe 3-9 heures. Si le pivotement est fait autour de l'axe 6-12 heures, deux tiges de mise à l'heure seraient préférables, chaque tige commandant un des affichages. Une telle réalisation étant à la portée de l'homme du métier, elle ne sera pas décrite.Finally, a time-setting rod 6 makes it possible, in an axial position, to move the hour and minute hands of the two displays in synchronism, and, in another axial position, the hands of one of the displays independently of those from the other display. This arrangement is advantageous for a watch pivotally mounted in a housing around the axis 3-9 hours. If pivoting is done around the 6-12 hour axis, two time setting rods would be preferable, each rod controlling one of the displays. Such an embodiment being within the reach of those skilled in the art, it will not be described.

L'aiguille des secondes 100 a été rajoutée au mouvement d'origine. Elle est montée sur un arbre 101 qui traverse l'arbre 27 supportant l'aiguille des minutes 5m. A une extrémité de l'arbre 101 est fixée l'aiguille 100, alors que l'autre extrémité de cet arbre pivote dans une pierre, supportée par un pont intermédiaire 102, partie du bâti 11, et dans laquelle pivote aussi une extrémité de l'arbre 27, solidaire en rotation de l'aiguille des secondes 3s du premier affichage.The seconds hand 100 has been added to the original movement. It is mounted on a shaft 101 which passes through the shaft 27 supporting the minute hand 5m. At one end of the shaft 101 is fixed the needle 100, while the other end of this shaft pivots in a stone, supported by an intermediate bridge 102, part of the frame 11, and in which also pivots an end of the shaft 27, integral in rotation with the seconds hand 3s of the first display.

Il y a lieu de remarquer que le pont 102 existait déjà dans le mouvement d'origine. Il n'est pas représenté dans le document cité, mais c'est celui qui supporte la pierre de pivotement de l'arbre 27. Dans un mouvement à deux affichages concentriques opposés, un tel pont est généralement nécessaire pour supporter au moins l'arbre de l'aiguille des secondes du premier affichage.It should be noted that the bridge 102 already existed in the original movement. It is not represented in the cited document, but it is the one that supports the pivoting stone of the shaft 27. In a movement with two opposite concentric displays, such a bridge is generally necessary to support at least the shaft of the seconds hand of the first display.

Dans le mouvement d'origine, sur l'arbre 27 est fixée une roue dentée des secondes 26, ou première roue des secondes, qui a une denture radiale 26' venant engrener avec un pignon 30 afin d'entraîner en rotation la roue d'échappement 32.In the original movement, on the shaft 27 is fixed a second gear wheel 26, or first seconds wheel, which has a radial toothing 26 'meshing with a pinion 30 in order to drive in rotation the wheel of exhaust 32.

La roue 26 est également utilisée dans la présente invention pour mettre en mouvement l'aiguille des secondes 100. Une deuxième roue dentée des secondes 103 est fixée dans ce but sur l'arbre 101, en regard du pont 102. La roue 103 comporte en outre une denture axiale 105. Une denture axiale 104 identique à la denture 105, c'est-à-dire de même diamètre et ayant le même nombre de dents, est aussi disposée sur la roue 26. Les dentures 104 et 105 se font face, de part et d'autre du pont 102.The wheel 26 is also used in the present invention to set in motion the second hand 100. A second gear 103 seconds is fixed for this purpose on the shaft 101, opposite the bridge 102. The wheel 103 comprises in addition to an axial toothing 105. An axial toothing 104 identical to the toothing 105, that is to say of the same diameter and having the same number of teeth, is also disposed on the wheel 26. The teeth 104 and 105 face each other. , on both sides of the bridge 102.

Dans une ouverture ménagée dans le pont 102 est enfin placée une roue dentée de renvoi 107 qui présente une denture radiale 108 venant en prise avec les dentures 104 et 105. A cet effet la roue 107 est montée pivotante sur le pont 102 autour d'un axe de révolution orienté perpendiculairement à l'axe xx' et coupant cet axe. Pour rendre possible la mise en place de la roue 107, le pont 102 présente une partie amovible 109 dans laquelle pénètre une extrémité de l'arbre de cette roue.In an opening in the bridge 102 is finally placed a gear wheel 107 which has a radial toothing 108 engaging with the teeth 104 and 105. For this purpose the wheel 107 is pivotally mounted on the bridge 102 around a axis of revolution oriented perpendicularly to the axis xx 'and intersecting this axis. To make possible the introduction of the wheel 107, the bridge 102 has a removable portion 109 into which penetrates one end of the shaft of the wheel.

Dans ces conditions, il est clair que toute rotation de la première roue des secondes 26 entraîne une rotation du même angle, mais de sens opposé, de la deuxième roue dentée des secondes 103, et donc de l'aiguille des secondes 100. Ceci constitue l'objectif de l'invention, puisque cette dernière aiguille pivote ainsi dans le sens conventionnel.Under these conditions, it is clear that any rotation of the first seconds wheel 26 causes a rotation of the same angle, but in the opposite direction, of the second gear of seconds 103, and therefore of the seconds hand 100. This constitutes the object of the invention, since the latter needle thus pivots in the conventional direction.

La roue de renvoi 107 peut être réalisée en métal ou en matière synthétique et présenter un diamètre voisin de l'épaisseur du pont 102, entraînant une faible augmentation de la hauteur du mouvement. Comme la roue 107 est, en outre, le seul mobile de liaison entre les roues 26 et 103, le jeu de l'aiguille 100 est réduit à sa plus faible valeur possible.The return wheel 107 may be made of metal or plastic and have a diameter close to the thickness of the bridge 102, resulting in a small increase in the height of the movement. As the wheel 107 is, in addition, the only mobile link between the wheels 26 and 103, the play of the needle 100 is reduced to its lowest possible value.

Dans une autre forme de réalisation du mouvement selon l'invention, représentée sur les figures 4 et 5, la roue de renvoi 107 présente une denture axiale 110, et la deuxième roue des secondes 103 une denture radiale 111, identique par le diamètre et le nombre de dents à la denture radiale 26' de la première roue des secondes 26. La roue de renvoi 107 est montée pivotante dans la partie amovible 109 du pont 102 de manière à venir en prise avec les dentures 111 et 26' des roues 103 et 26, et réaliser de cette façon la transmission du mouvement de rotation d'une roue à l'autre dans le sens voulu. Comme le diamètre de la roue 107 n'est que légèrement supérieur à la hauteur du pont 102, cette solution permet de réduire encore davantage la hauteur du mouvement.In another embodiment of the movement according to the invention, shown in FIGS. 4 and 5, the return wheel 107 has an axial toothing 110, and the second wheel 103 a radial toothing 111, identical in diameter and number of teeth at the radial toothing 26 'of the first seconds wheel 26. The return wheel 107 is pivotally mounted in the removable portion 109 of the bridge 102 so as to engage the teeth 111 and 26' of the wheels 103 and 26, and realize in this way the transmission of the rotational movement from one wheel to the other in the desired direction. Since the diameter of the wheel 107 is only slightly greater than the height of the bridge 102, this solution makes it possible to further reduce the height of the movement.

Si le mouvement est un mouvement électronique analogique comportant un mobile faisant un tour par minute et supportant l'aiguille des secondes de l'affichage principal, l'aiguille des secondes de l'autre affichage peut, bien entendu, être aussi entraînée en rotation, comme dans la réalisation décrite, par une roue de renvoi unique.If the movement is an analog electronic movement comprising a mobile running one revolution per minute and supporting the second hand of the main display, the second hand of the other display can, of course, also be rotated, as in the embodiment described, by a single return wheel.

Il va de soi que le mouvement d'horlogerie qui vient d'être décrit peut subir encore d'autres modifications que celles déjà mentionnées, et se présenter sous d'autres variantes, évidentes à l'homme du métier, sans sortir du cadre de la présente invention. En particulier la roue dentée de renvoi 107 pourrait pivoter sur un autre organe du bâti 11, fixe par rapport à ce pont. Il serait également possible de faire appel à des engrenages coniques pour assurer la liaison cinématique entre les deux roues de secondes.It goes without saying that the watch movement that has just been described may undergo other modifications than those already mentioned, and present itself in other variants, obvious to those skilled in the art, without departing from the scope of the present invention. the present invention. In particular the toothed gear 107 could pivot on another body of the frame 11, fixed relative to this bridge. It would also be possible to use conical gears to ensure the kinematic connection between the two wheels of seconds.

Ainsi, par des moyens simples et nécessitant peu d'espace, il est possible de réaliser un mouvement de montre permettant l'affichage de la seconde sur ses deux faces, avec ou sans l'indication d'un second fuseau horaire.Thus, by simple means and requiring little space, it is possible to perform a watch movement for displaying the second on both sides, with or without the indication of a second time zone.

Claims (6)

  1. Analogue timepiece movement delimited by two substantially planar and parallel opposite main faces (1, 2), comprising:
    - a frame (11),
    - a power source (10),
    - a first gear set, driven by the said source, designed to drive the hands (3h, 3m, 3s) of a first time display arranged facing one (1) of the said faces and comprising a seconds gear wheel (26) performing one revolution per minute,
    characterized in that it further comprises:
    - another seconds gear wheel (103) designed to drive a second second hand (100), the said seconds wheels (26, 103) pivoting about a common axis of revolution (xx') directed at right angles to the said faces (1, 2) and having toothsets (105, 104; 111, 26') of the same diameter and the same number of teeth, and
    - a transmission gear wheel (107), pivoting on the frame (11) about an axis of revolution positioned parallel to the said faces (1, 2) the toothset (108; 110) of which meshes with the toothsets of the said seconds wheels (26, 103) to drive the second hand (100) of the said second display in the opposite direction to the second hand (3s) of the said first display.
  2. Movement according to Claim 1, characterized in that it comprises a second gearset, driven by a runoff of the first gearset, comprising runners designed to drive an hour hand (5h) and a minute hand (5m) of a second display positioned facing the said other face (2) in synchronism with the hands of the first display.
  3. Movement according to Claim 2, characterized in that it further comprises an oscillating mass (7) mounted to pivot on the frame (11) about the said axis (xx') and equipped with a central opening, the runners bearing the hands (5h, 5m) of the second display and the wheel bearing the second second hand (100) being engaged in the said opening.
  4. Movement according to one of Claims 1 to 3, characterized in that the teeth of the toothsets (104, 105) of the said seconds wheels (26, 103) are oriented axially, and the teeth of the toothset (108) of the said transmission wheel (107) are oriented radially.
  5. Movement according to one of Claims 1 to 3, characterized in that the teeth of the toothsets (26', 111) of the said seconds wheels (26, 103) are oriented radially, and the teeth of the toothset (110) of the said transmission wheel (107) are oriented axially.
  6. Movement according to one of the preceding claims in which the frame (11) comprises a bridge (102) intended to support the ends of the shafts (27, 101) secured to the said seconds wheels (26, 103), characterized in that the said bridge (102) also serves to support at least one end of the shaft on which the said transmission wheel (107) pivots.
EP20030405061 2003-02-05 2003-02-05 Clockwork movement provided with double faced analog display Expired - Lifetime EP1445671B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE60305432T DE60305432D1 (en) 2003-02-05 2003-02-05 Movement with two opposite analog displays
EP20030405061 EP1445671B1 (en) 2003-02-05 2003-02-05 Clockwork movement provided with double faced analog display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030405061 EP1445671B1 (en) 2003-02-05 2003-02-05 Clockwork movement provided with double faced analog display

Publications (2)

Publication Number Publication Date
EP1445671A1 EP1445671A1 (en) 2004-08-11
EP1445671B1 true EP1445671B1 (en) 2006-05-24

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ID=32605484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030405061 Expired - Lifetime EP1445671B1 (en) 2003-02-05 2003-02-05 Clockwork movement provided with double faced analog display

Country Status (2)

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EP (1) EP1445671B1 (en)
DE (1) DE60305432D1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1432566A (en) * 1920-03-01 1922-10-17 George Seeber Sr Secondary clock
FR1161758A (en) * 1955-10-15 1958-09-04 Double-sided clock
CH682032B5 (en) * 1991-04-15 1994-01-14 Rafal S.A. automatic watch and time-setting mechanism.
CH684620B5 (en) * 1993-01-29 1995-05-15 Walter Schlup clockwork with two opposite analog displays.

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EP1445671A1 (en) 2004-08-11
DE60305432D1 (en) 2006-06-29

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