EP0008832A2 - Clockwork with hands comprising a differential-gear mechanism - Google Patents

Clockwork with hands comprising a differential-gear mechanism Download PDF

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Publication number
EP0008832A2
EP0008832A2 EP79200475A EP79200475A EP0008832A2 EP 0008832 A2 EP0008832 A2 EP 0008832A2 EP 79200475 A EP79200475 A EP 79200475A EP 79200475 A EP79200475 A EP 79200475A EP 0008832 A2 EP0008832 A2 EP 0008832A2
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EP
European Patent Office
Prior art keywords
wheel
satellite
teeth
pinion
planetary
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Granted
Application number
EP79200475A
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German (de)
French (fr)
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EP0008832A3 (en
EP0008832B1 (en
Inventor
Pierre-Alain Vuille
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Ebauchesfabrik ETA AG
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Ebauchesfabrik ETA AG
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/005—Mechanical devices for setting the time indicating means stepwise or on determined values
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork
    • G04B13/007—Gearwork with differential work
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/22—Arrangements for indicating different local apparent times; Universal time pieces
    • G04B19/221—Arrangements for indicating different local apparent times; Universal time pieces mechanisms for correcting the hours hand only, i.e. independently for minutes and seconds hands

Definitions

  • the subject of the present invention is a clockwork movement with hands comprising a differential gear mechanism controlling the position of the hour hand and itself comprising a planet carrier, at least one satellite with two coaxial teeth, a planetary pinion. and a planetary wheel, the planet (s) being engaged simultaneously with the planetary wheel and with the planetary gear.
  • patent CH 507 544 proposed a composite hour wheel formed of two parts frictionally coupled to each other, the relative positions of these two parts being determined by the engagement of a pin secured to one parts in the holes of the other part.
  • the complete arrangement includes friction between the roadway and the shaft which drives it and a second friction in the composite hour wheel.
  • Patents F 1,589,638 and CH 494,997 propose another solution in which the composite hours mobile is replaced by a differential gear comprising a planet carrier and a satellite with two teeth.
  • the satellite wheel is engaged with the roadway while its pinion is engaged with the hour wheel.
  • the satellite normally plays the role of the timer wheel, but by moving the planet carrier by means of a control member, one can cause a rapid rotation of the hour wheel without changing the position of the roadway.
  • a device of this kind therefore avoids the presence of a friction coupling.
  • German patent application DOS 16 73 621 also describes an arrangement of this type.
  • the patent application DOS 2,730,948 also describes a differential gear mechanism comprising a satellite with two teeth. In this case, it is the planetary pinion which constitutes the control mobile. The satellite is mounted on a toothed disc which constitutes the minute wheel and its pinion toothing is engaged with the hour wheel.
  • a differential gear mechanism comprising a satellite with two teeth. In this case, it is the planetary pinion which constitutes the control mobile.
  • the satellite is mounted on a toothed disc which constitutes the minute wheel and its pinion toothing is engaged with the hour wheel.
  • Patent CH 513 445 application filed No 14 913/68
  • any friction coupling has been avoided.
  • the entire gear includes several branches, so that it is possible to act by a planetary gear on an hour hand which indicates the local time to change its position without influencing the progress of the other hands.
  • this arrangement presents a great complication.
  • the object of the present invention is to produce a timepiece movement of the type mentioned at the start in which the differential gear is arranged so that the reaction exerted on the mobile engaged with the gear train when a movement of the movement is controlled. 'hour hand is minimum, this gear can therefore be introduced into electronic quartz wristwatch movements in which the engine torque is very low.
  • the timepiece movement according to the invention is characterized in that the planet carrier is arranged in the hour wheel, the planetary gear is arranged in the roadway and the silent planer wheel is a internal gear ring surrounding the path of the satellite (s) and connected to a mechanism control member.
  • the movement shown in fig. 1 is a watch movement which can be either an electronic battery and quartz watch, comprising a stepping motor actuating a gear train, or a mechanical watch. All of these are classic. They are mounted on the reverse of plate 1 and are not shown in the drawing.
  • the train comprises a drive pinion 2 which is engaged with a minute wheel 3 coaxial with the movement, so that this wheel is driven at the rate of one revolution per hour.
  • the minute wheel 3 is an element of the assembly shown in FIGS. 2 and 3. They will be described later.
  • the assembly shown in Figs. 2 and 3 notably includes an hour wheel which drives a calendar mechanism advancing by jumps, once per 24 hours, a date ring 4.
  • the calendar mechanism is also of the usual type, so that it will not be described in detail here.
  • the calendar is corrected by means of the control mechanism which is actuated by the rod 5 (fig. 1). This rod is arranged radially in the movement between the plate 1 and the bridges. It activates the control mechanism visible in fig.
  • the star 14b cooperates with an elastic arm 15 playing the role of jumper and extending from a retaining plate 16 placed on the plate 1.
  • the role of the mobile 14 and that of the jumper spring 15 will be explained later in relationship with the differential gear that drives the needles.
  • the movable reference 12 mounted on the rocker 9 engages with a time setting reference 17 which meshes with the roadway as will be seen below.
  • the rod 5 therefore makes it possible to exercise the functions of setting the time of the hands, and of advancing the hour hand alone by jumps of one hour. This last function also ensures the correction of the calendar if necessary.
  • the rod is disconnected and this position is a neutral position.
  • Figs. 2 and 3 show how the motor and the mechanism of the actuator act on the organs which carry the needles.
  • the second hand 18 is mounted at the end of a second shaft 19 which has a wheel 20 engaged with the cog operated by the engine.
  • the seconds shaft 19 is supported by a bearing 21 mounted in the plate 1.
  • the upper surface of this bearing retains in place the barrel of the carriageway 22 which carries the minute hand 23.
  • the carriageway carries in the vicinity of its lower end a large diameter disc 24 provided with a peripheral toothing in which the time-setting reference gear 17 engages. Above the disc 24, the carriageway: has a seat 22a on which the minute wheel 3 is adjusted.
  • the tightening of this wheel on the carriageway of the carriageway is adjusted so as to produce a friction coupling having a well-defined disengaging torque.
  • the disc of the minute wheel is cut so as to present two parallel and narrow bars 38 and 39 which may have notches in an arc of radius corresponding to that of the adjustment range 22a.
  • the tightening exerted by the bars 38 and 39 on the friction surface of the roadway can thus be precisely adjusted by allowing a slight bending of the bars.
  • a road pinion 25 is still driven on the barrel 22, immediately above the wheel 3. It meshes, as cm sees in fig. 3, in the toothing of the wheel of a satellite 26 with two toothing carried by a disc 27 secured to a barrel 28 and constituting with this barrel the hour wheel.
  • the disc 27 is provided with a key-shaped hole 29 which allows the stallite 26 to be put in place, which is machined in one piece with a pinion toothing of very small diameter and a toothing of the wheel which , as mentioned above, meshes in the road pinion 25.
  • the peripheral toothing of the disc 27 meshes in the toothing of the wheel of a caleridier mobile 30 rotating on a pin 31 fixed in the Latin p 1.
  • the toothing of calendar calendar pinion drives a 24-hour wheel 32 provided with an elastic finger capable of driving calendar ring 4 once per turn by hooking one of its inner teeth, these being regularly distributed around its periphery .
  • the barrel 28 carries the hour hand 33. It rests on the upper face of the road pinion 25 and is held in place by the last element 34 of the differential gear.
  • This last element which plays the role of a planetary wheel, is a crown with internal teeth provided with a pivot bearing 35 having a diameter slightly larger than that of the crown teeth and a peripheral external teeth 36.
  • the element 34 is positioned by the retaining plate 16 which has in its central part a circular hole in which engages the bearing 35.
  • This plate covers the external part of the element 34 and is used to hold in place axially. As it is screwed onto the plate, it assures the assembly of the differential mechanism and the control mechanism. It makes it possible to house all these elements in a very limited space.
  • the toothing 36 of the crown 34 is in engagement with the toothing of the wheel 14a of the mobile 14 which, as we have seen above, also includes the star 14b located immediately under the wheel 14a and the pinion 14c located under the star 14b.
  • the intermediate return 13 and the mobile 14 both pivot on pins planted in the plate. They are held in place axially by corresponding elements of the holding plate.
  • the latter also has a hole 37 (fig. 1 and 2) used to limit the movements of the movable gear 12 by cooperating with the end of the axis of this gear, this axis being integral with the rocker 9 and extending projecting to the level of the part of the retaining plate which has the hole 37.
  • the hands are regularly driven by the watch motor. While the shaft 19 of the second hand, connected to the motor rotor by a gear train, is actuated by pulses, this gear train also transmits the engine torque to the pinion 2 and to the wheel 3. That -this causes the roadway 22 by friction and as the crown 34 is fixed, the roadway pinion 25 causes the satellite 26 to roll by its pinion teeth on the internal teeth of the crown 34. As a result, the satellite carrier 27 which plays the hour wheel role rotates slowly around the axis of movement, driven by the intermediate shaft of the satellite 26.
  • the reference 12 When the rod is brought into the time setting position, the reference 12 is engaged with the time setting reference 17 and a rotation of the rod rotates the disc 24 secured to the roadway 22. Under these conditions , a contact will switch off the watch engine, including all of the gear train. The wheel 3 will be blocked, while the roadway 22 frictionally connected to the wheel 3 will be driven at a relatively high speed. As in normal operation, but at a higher speed, the pinion 25 will roll the satellite 26 on the inner ring 34_ by moving the hour hand 33 at a speed twelve times lower than the minute hand. Thus, the two hands move in their normal ratio, the second hand being stopped.
  • the motor In the intermediate position of the rod, the motor is not blocked, so that the second hand advances at the rate imposed by the time base of the watch. If the rod is moved in rotation, the intermediate return 13 rotates the mobile 14 and the rotation of the latter is marked by stop positions in which the head of the jumper 15 engages between two teeth of the star 14b .
  • the rotation of the mobile 14 is therefore a jerky rotation.
  • the angle of rotation which, for the crown placed at the head of the rod, corresponds to a rotation of 72 ° of the mobile 14 being of the order of 60 °, this angle is substantially that which is easily imparted to the crown holding it between the thumb of the index finger. As the wheel 14a is engaged with the external toothing of the element 34, it is now the latter which is driven in rotation.
  • the teeth of the wheel teeth of the satellite 26 rest on the pinion 25 which acts as a planetary gear and the satellite is moved in rotation around the axis of the needles by the internal toothing of the element 34. By its axis, the satellite rotates the wheel 27, driving the hour hand 33.
  • the displacement corresponding to a jump of the star 14b corresponds to 1/12 of a turn of the hand 33 and therefore to a advance one hour.
  • Fig. 4 schematically represents the assembly of the differential gear described above and shows in its right part the points of application of the forces.
  • the element 34 is forcedly driven by the control mechanism. It exerts on the pinion teeth of the satellite 26 a force located at level P3, therefore a torque given by the product of its distance from the axis of the needles by the tangential force. This torque produces the driving of the hour wheel by pressing the toothing of the satellite wheel on the toothing of roadway 25.
  • the force transmission on the planet carrier takes place at level P2, while the reaction on the roadway performs at level Pl.
  • the tangential force exerted on the planetary gear 25 will be reduced in the ratio of the teeth of the satellite to the tangential force exerted by the element 34 on the teeth of the satellite gear.
  • This force will itself be reduced in the ratio of the radius of the wheel teeth to the sum of the radii of the teeth of the satellite with respect to the tangential resistance force offered by the hours wheel. Even when this resistance is increased as a result of arming the calendar mechanism, the reaction on the road remains minimal.
  • the construction of the minute wheel, formed by the carriageway 22, the pinion 25, the toothed disc 24 and the wheel 3 can be improved and simplified as shown in partial figure 5.
  • the pinion 25 has a neckline in one piece with the barrel 22 of the roadway and has truncated teeth at their base.
  • the disc 24 is driven on the truncated teeth of the pinion 25 while the bearing 22a is located under the pinion 25, so that the wheel 3 is located under the disc 24.
  • This arrangement simplifies the manufacture since it only has three pieces instead of four.
  • the crimping of the wheel 3 on the bearing 22a is easier to perform.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Gears, Cams (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

Dans un mouvement d'horlogerie, et plus particulièrement de montre-bracelet à quartz, ayant un moteur pas à pas à faible couple. il est prévu un engrenage différentiel qui entraine les aiguilles et qui permet le déplacement de l'aiguille des heures seule par sauts. La chaussée (22) comporte un pignon (25) qui joue le rôle de pignon planétaire. Le satellite (26) est monté sur la roue des heures (27) jouant le rôle de porte-satellite. Le rôle de la roue planétaire est rempli par un mobile à couronne intérieure (34) qui est normalement fixe, mais qui est commandé par la tige et se déplace par sauts de façon à faire rouler le satellite (26) sur le pignon (25).

Figure imgaf001
In a watch movement, and more particularly a quartz wristwatch, having a stepping motor with low torque. a differential gear is provided which drives the hands and which allows the hours hand to be moved alone by jumps. The roadway (22) has a pinion (25) which acts as a planetary pinion. The satellite (26) is mounted on the hour wheel (27) playing the role of satellite carrier. The role of the planetary wheel is fulfilled by a mobile with an inner crown (34) which is normally fixed, but which is controlled by the rod and moves in jumps so as to roll the satellite (26) on the pinion (25) .
Figure imgaf001

Description

La présente invention a pour objet un mouvement d'horlogerie à aiguilles comprenant un mécanisme à engrenage différentiel commandant la position de l'aiguille des heures et comprenant lui-même un porte-satellite, au moins un satellite à deux dentures coaxiales, un pignon planétaire et une roue planétaire, le ou les satellites étant en prise simultanément avec la roue planétaire et avec le pignon planétaire.The subject of the present invention is a clockwork movement with hands comprising a differential gear mechanism controlling the position of the hour hand and itself comprising a planet carrier, at least one satellite with two coaxial teeth, a planetary pinion. and a planetary wheel, the planet (s) being engaged simultaneously with the planetary wheel and with the planetary gear.

Depuis que la réalisation de mouvements de montre équipés d'un mécanisme qui permet de déplacer l'aiguille des heures par sauts d'une heure a pris l'essor commercial que l'on connaît actuellement, plusieurs tentatives ont déjà été faites pour concevoir des mécanismes de commande satisfaisant dans les meilleures conditions possibles aux exigences de la pratique.Since the making of watch movements equipped with a mechanism which allows the hour hand to be moved in one hour jumps has taken the commercial boom that we know today, several attempts have already been made to design control mechanisms satisfying in the best possible conditions the requirements of practice.

Ainsi, le brevet CH 507 544 proposait une roue des heures composite formée de deux parties accouplées à friction l'une à l'autre, les positions relatives de ces deux parties étant déterminées par l'engagement d'une goupille solidaire de l'une des parties dans des trous de l'autre partie. On s'est aperçu toutefois que ces agencements et d'autres du même genre présentaient des difficultés de réglage extrêmement sérieuses surtout dans le cas de l'application à des montres électroniques où le couple moteur est extrêmement faible. En effet, l'agencement complet comprend une friction entre la chaussée et l'arbre qui l'entraîne et une seconde friction dans la roue des heures composite. Au moment où l'on effectue une modification de la position de l'aiguille des heures, en intervenant par le mécanisme de commande sur une des parties de la roue des heures, il faut éviter que la réaction exercée sur l'autre partie, en prise avec le rouage, ne perturbe le fonctionnement du moteur. D'autre part, il faut que la transmission de couple entre les deux parties de la roue composite soit suffisante pour permettre par exemple d'actionner un mécanisme de calendrier. La plage d'ajustage qui reste est souvent très faible et par conséquent, il est difficile de garantir la fonction de cet accouplement.Thus, patent CH 507 544 proposed a composite hour wheel formed of two parts frictionally coupled to each other, the relative positions of these two parts being determined by the engagement of a pin secured to one parts in the holes of the other part. However, it has been observed that these arrangements and others of the same kind present extremely serious adjustment difficulties, especially in the case of application to electronic watches where the engine torque is extremely low. Indeed, the complete arrangement includes friction between the roadway and the shaft which drives it and a second friction in the composite hour wheel. When a change is made to the position of the hour hand, by acting on the control mechanism on one part of the hour wheel, avoid the reaction exerted on the other part, by taken with the train, does not disturb the operation of the engine. On the other hand, the torque transmission between the two parts of the composite wheel must be sufficient to allow, for example, to actuate a calendar mechanism. The adjustment range that remains is often very small and therefore it is difficult to guarantee the function of this coupling.

Les brevets F 1589 638 et CH 494 997 proposent une autre solution dans laquelle le mobile des heures composite est remplacé par un engrenage différentiel comportant un porte-satellite et un satellite à deux dentures. La roue du satellite est en prise avec la chaussée tandis que son pignon est en prise avec la roue des heures. Le satellite joue normalement le rôle de la roue de minuterie, mais en déplaçant le porte-satellite au moyen d'un organe de commande, on peut provoquer une rotation rapide de la roue des heures sans modifier la position de la chaussée. Un dispositif de ce genre évite donc la présence d'un accouplement à friction. La demande de brevet allemand DOS 16 73 621 décrit aussi un agencement de ce type.Patents F 1,589,638 and CH 494,997 propose another solution in which the composite hours mobile is replaced by a differential gear comprising a planet carrier and a satellite with two teeth. The satellite wheel is engaged with the roadway while its pinion is engaged with the hour wheel. The satellite normally plays the role of the timer wheel, but by moving the planet carrier by means of a control member, one can cause a rapid rotation of the hour wheel without changing the position of the roadway. A device of this kind therefore avoids the presence of a friction coupling. German patent application DOS 16 73 621 also describes an arrangement of this type.

La demande de brevet DOS 2 730 948 décrit également un mécanisme à engrenage différentiel comportant un satellite à deux dentures. Dans ce cas, c'est le pignon planétaire qui constitue le mobile de commande. Le satellite est monté sur un disque denté qui constitue la roue des minutes et sa denture de pignon est en prise avec la roue des heures.
Or une analyse des couples et des forces qui s'exercent sur les différents mobiles de ces engrenages connus montre qu'ils n'offrent pas des conditions de fonctionnement optimales, de sorte que l'ajustage des frictions, par exemple, est difficile à réaliser.The patent application DOS 2,730,948 also describes a differential gear mechanism comprising a satellite with two teeth. In this case, it is the planetary pinion which constitutes the control mobile. The satellite is mounted on a toothed disc which constitutes the minute wheel and its pinion toothing is engaged with the hour wheel.
However, an analysis of the torques and the forces exerted on the various mobiles of these known gears shows that they do not offer optimal operating conditions, so that the adjustment of frictions, for example, is difficult to carry out. .

Dans une autre réalisation connue (Brevet CH 513 445, demande déposée No 14 913/68) tout accouplement à friction a été évité. L'ensemble de l'engrenage comprend plusieurs embranchements, de sorte qu'il est possible d'agir par un engrenage planétaire sur une aiguille des heures qui indique le temps local pour modifier sa position sans influencer la marche des autres aiguilles. Toutefois, cet agencement présente une grande complication.In another known embodiment (Patent CH 513 445, application filed No 14 913/68) any friction coupling has been avoided. The entire gear includes several branches, so that it is possible to act by a planetary gear on an hour hand which indicates the local time to change its position without influencing the progress of the other hands. However, this arrangement presents a great complication.

Le but de la présente invention est de réaliser un mouvement d'horlogerie du type mentionné au début dans lequel l'engrenage différentiel soit agencé de façon que la réaction exercée sur le mobile en prise avec le rouage au moment où on commande un déplacement de l'aiguille des heures soit minimum, cet engrenage pouvant donc être introduit dans des mouvements de montre-bracelet électroniques à quartz dans lesquels le couple moteur est très faible.The object of the present invention is to produce a timepiece movement of the type mentioned at the start in which the differential gear is arranged so that the reaction exerted on the mobile engaged with the gear train when a movement of the movement is controlled. 'hour hand is minimum, this gear can therefore be introduced into electronic quartz wristwatch movements in which the engine torque is very low.

On sait, en effet, qu'il y a un intérêt à réaliser des moteurs d'entraînement de montres électroniques qui fournissent un couple moteur aussi petit que possible afin de prolonger la durée de vie des piles.It is known, in fact, that there is an advantage in producing drive motors for electronic watches which supply as small a motor torque as possible in order to prolong the life of the batteries.

Dans ce but, le mouvement d'horlogerie selon l'invention, du genre mentionné au début, est caractérisé en ce que le porte-satellite est agencé en roue des heures, le pignon planétaire est agencé en chaussée et la roue plané taire est une couronne à denture intérieure entourant le chemin du ou des satellites et reliée à un organe de commande du mécanisme.For this purpose, the timepiece movement according to the invention, of the kind mentioned at the beginning, is characterized in that the planet carrier is arranged in the hour wheel, the planetary gear is arranged in the roadway and the silent planer wheel is a internal gear ring surrounding the path of the satellite (s) and connected to a mechanism control member.

On va décrire ci-après, à titre d'exemple, une forme d'exécution du mouvement d'horlogerie selon l'invention, en se référant au dessin dont :

  • la fig. 1 est une vue en plan de dessus, certaines pièces étant partiellement arrachées,
  • la fig. 2 une vue en perspective éclatée de l'engrena ge différentiel et de la plaque de maintien,
  • la fig. 3 une vue en coupe à plus grande échelle montrant l'accouplement différentiel et les aiguilles,
  • la fig. 4 un schéma montrant la répartition des forces à leurs divers points d'application, et
  • la fig. 5 est une vue en coupe partielle d'une variante.
An embodiment of the timepiece movement according to the invention will be described below, by way of example, with reference to the drawing, in which:
  • fig. 1 is a plan view from above, certain parts being partially broken away,
  • fig. 2 an exploded perspective view of the differential gear and the retaining plate,
  • fig. 3 a sectional view on a larger scale showing the differential coupling and the needles,
  • fig. 4 a diagram showing the distribution of forces at their various points of application, and
  • fig. 5 is a partial sectional view of a variant.

Le mouvement représenté à la fig. 1 est un mouvement de montre qui peut être, soit une montre électronique à pile et à quartz, comportant un moteur pas à pas actionnant un rouage, soit une montre mécanique. Tous ces éléments sont classiques. Ils sont montés au revers de la platine 1 et ne sont pas représentés au dessin.The movement shown in fig. 1 is a watch movement which can be either an electronic battery and quartz watch, comprising a stepping motor actuating a gear train, or a mechanical watch. All of these are classic. They are mounted on the reverse of plate 1 and are not shown in the drawing.

Le rouage comporte un pignon d'entraînement 2 qui est en prise avec une roue des minutes 3 coaxiale au mouvement, de sorte que cette roue est entraînée à raison d'un tour par heure. La roue des minutes 3 est un élément de l'ensemble représenté aux fig. 2 et 3. Elles sera décrite plus loin. L'ensemble représenté aux fig. 2 et 3 comporte notamment une roue des heures qui entraîne un mécanisme de calendrier faisant avancer par sauts, une fois par 24 h, un anneau de quantième 4. Le mécanisme de calendrier est également de type usuel, de sorte qu'il ne sera pas décrit en détail ici. Comme on le verra plus loin, la correction du calendrier s'effectue au moyen du mécanisme de commande qui est actionné par la tige 5 (fig. 1). Cette tige est disposée radialement dans le mouvement entre la platine 1 et les ponts. Elle actionne le mécanisme de commande visible à la fig. 1, qui comporte une tirette 6 coopérant avec un ressort de tirette 7 dont l'extrémité présente trois encoches déterminant les trois positions de la tige et du mécanisme. La tirette 6 coopère avec une bascule de pignon coulant 8 et avec une bascule de renvoi 9. La première de ces bascules, sollicitée par le ressort 10, déplace le pignon coulant 11 qui est monté sur un carré de la tige 5, tandis que la seconde bascule porte un renvoi mobile 12 qui est en prise avec la denture de couronne du pignon coulant dans la position extérieure et dans la position intermédiaire de la tige. mais qui est dégagé du pignon coulant dans la position intérieure ou la position neutre. Dans la position intermédiaire de la tige, représentée à la fig. 1, le renvoi 12 est en prise avec un renvoi intermédiaire 13 d'axe fixe qui engrène dans le pignon d'un mobile de commande: 14 comprenant un pignon 14c, une roue 14a et une étoile 14b (fig. 2).The train comprises a drive pinion 2 which is engaged with a minute wheel 3 coaxial with the movement, so that this wheel is driven at the rate of one revolution per hour. The minute wheel 3 is an element of the assembly shown in FIGS. 2 and 3. They will be described later. The assembly shown in Figs. 2 and 3 notably includes an hour wheel which drives a calendar mechanism advancing by jumps, once per 24 hours, a date ring 4. The calendar mechanism is also of the usual type, so that it will not be described in detail here. As will be seen below, the calendar is corrected by means of the control mechanism which is actuated by the rod 5 (fig. 1). This rod is arranged radially in the movement between the plate 1 and the bridges. It activates the control mechanism visible in fig. 1, which comprises a pull tab 6 cooperating with a pull spring 7 whose end has three notches determining the three positions of the rod and of the mechanism. The pull tab 6 cooperates with a sliding pinion rocker 8 and with a return rocker 9. The first of these rockers, biased by the spring 10, displaces the sliding pinion 11 which is mounted on a square of the rod 5, while the second rocker carries a movable return 12 which is engaged with the teeth crown of the sliding pinion in the external position and in the intermediate position of the rod. but which is released from the sliding pinion in the internal position or the neutral position. In the intermediate position of the rod, shown in FIG. 1, the reference 12 is engaged with an intermediate reference 13 of fixed axis which meshes in the pinion of a control mobile: 14 comprising a pinion 14c, a wheel 14a and a star 14b (fig. 2).

L'étoile 14b coopère avec un bras élastique 15 jouant le rôle de sautoir et s'étendant à partir d'une plaque de maintien 16 placée sur la platine 1. Le rôle du mobile 14 et celui du ressort sautoir 15 seront expliqués plus loin en relation avec l'engrenage différentiel qui entraîne les aiguilles. Dans la position de mise à l'heure de la tige 5, le renvoi mobile 12 monté sur la bascule 9 vient en prise avec un renvoi de mise à l'heure 17 qui engrène avec la chaussée comme on le verra plus loin. La tige 5 permet donc d'exercer les fonctions de mise à l'heure des aiguilles, et d'avance de l'aiguille des heures seule par sauts d'une heure. Cette dernière fonction assure également la correction du calendrier en cas de besoin. Dans la position intérieure, la tige est déconnectée et cette position est une position neutre.The star 14b cooperates with an elastic arm 15 playing the role of jumper and extending from a retaining plate 16 placed on the plate 1. The role of the mobile 14 and that of the jumper spring 15 will be explained later in relationship with the differential gear that drives the needles. In the time setting position of the rod 5, the movable reference 12 mounted on the rocker 9 engages with a time setting reference 17 which meshes with the roadway as will be seen below. The rod 5 therefore makes it possible to exercise the functions of setting the time of the hands, and of advancing the hour hand alone by jumps of one hour. This last function also ensures the correction of the calendar if necessary. In the internal position, the rod is disconnected and this position is a neutral position.

Les fig. 2 et 3 montrent comment le moteur et le mécanisme de connuande agissent sur les organes qui portent les aiguilles. L'aiguille des secondes 18 est montée à l'extrémité d'un arbre des secondes 19 qui comporte une roue 20 en prise avec le rouage actionné par le moteur. L'arbre des secondes 19 est supporté par un palier 21 monté dans la platine 1. La surface supérieure de ce palier retient e n place le canon de la chaussée 22 qui porte l'aiguille des minutes 23. La chaussée porte au voisinage de son extrémité inférieure un disque 24 de grand diamètre pourvu d'une denture périphérique dans laquelle engrène le renvoi de mise à l'heure 17. Au-dessus du disque 24, la chaussée: présente une portée 22a sur laquelle est ajustée la roue des minutes 3. Le serrage de cette roue sur la portée de la chaussée est ajusté de façon à réaliser un accouplement à friction ayant un couple de débrayage bien déterminé. Pour assurer un couple de friction régulier entre la roue des minutes 3 et la chaussée 22, le disque de la roue des minutes est découpé de façon à présenter deux barres parallèles et de faible largeur 38 et 39 qui peuvent présenter des échancrures en arc de cercle de rayon correspondant à celui de la portée d'ajustage 22a. Le serrage qu'exercent les barres 38 et 39 sur la portée de friction de la chaussée peut ainsi être réglé avec précision en autorisant un léger fléchissement des barres.Figs. 2 and 3 show how the motor and the mechanism of the actuator act on the organs which carry the needles. The second hand 18 is mounted at the end of a second shaft 19 which has a wheel 20 engaged with the cog operated by the engine. The seconds shaft 19 is supported by a bearing 21 mounted in the plate 1. The upper surface of this bearing retains in place the barrel of the carriageway 22 which carries the minute hand 23. The carriageway carries in the vicinity of its lower end a large diameter disc 24 provided with a peripheral toothing in which the time-setting reference gear 17 engages. Above the disc 24, the carriageway: has a seat 22a on which the minute wheel 3 is adjusted. The tightening of this wheel on the carriageway of the carriageway is adjusted so as to produce a friction coupling having a well-defined disengaging torque. To ensure a regular friction torque between the minute wheel 3 and the roadway 22, the disc of the minute wheel is cut so as to present two parallel and narrow bars 38 and 39 which may have notches in an arc of radius corresponding to that of the adjustment range 22a. The tightening exerted by the bars 38 and 39 on the friction surface of the roadway can thus be precisely adjusted by allowing a slight bending of the bars.

Comme on l'a vu plus haut, la roue 3 est en prise avec le pignon 2 qui transmet à la chaussée le mouvement de rotation provenant du moteur et par conséquent fait tourner l'aiguille des minutes. Un pignon de chaussée 25 est encore chassé sur le canon 22, immédiatement au-dessus de la roue 3. Il engrène, comme cm le voit à la fig. 3, dans la denture de roue d'un satellite 26 à deux dentures porté par un disque 27 solidaire d'un canon 28 et constituant avec ce canon la roue des heures. Le disque 27 est pourvu d'un trou en forme d'entrée de clé 29 qui permet la mise en place du stallite 26, lequel est usiné d'une seule pièce avec une denture de pignon de très petit diamètre et une denture de roue qui, comme on l'a dit précédemment, engrène dans le pignon de chaussée 25.As seen above, the wheel 3 is engaged with the pinion 2 which transmits the rotational movement coming from the engine to the roadway and consequently rotates the minute hand. A road pinion 25 is still driven on the barrel 22, immediately above the wheel 3. It meshes, as cm sees in fig. 3, in the toothing of the wheel of a satellite 26 with two toothing carried by a disc 27 secured to a barrel 28 and constituting with this barrel the hour wheel. The disc 27 is provided with a key-shaped hole 29 which allows the stallite 26 to be put in place, which is machined in one piece with a pinion toothing of very small diameter and a toothing of the wheel which , as mentioned above, meshes in the road pinion 25.

La denture périphérique du disque: 27 engrène dans la denture de roue d'un mobile de caleridrier 30 tournant sur une goupille 31 fixée dans la p latine 1. La denture de pignon du mobile de calendrier entraîne une roue de 24 heures 32 pourvue d'un doigt élastique capable d'entraîner une fois par tour l'anneau de calendrier 4 en accrochant une de ses dents intérieures, celles-ci étant régulièrement réparties sur son pourtour. Le canon 28 porte l'aiguille des heures 33. Il repose sur la face supérieure du pignon de chaussée 25 et il est maintenu en place par le dernier élément 34 de l'engrenage différentiel. Ce dernier élément, qui joue le rôle de roue planétaire, est une couronne à denture intérieure pourvue d'une portée de pivotement 35 ayant un diamètre légèrement plus grand que celui de la denture de couronne et d'une denture extérieure périphérique 36. Comme on le voit au dessin, l'élément 34 est positionné par la plaque de maintien 16 qui présente dans sa partie centrale un trou circulaire dans lequel s'engage la portée 35. Cette plaque recouvre la partie extérieure de l'élément 34 et sert à le maintenir en place axialement. Comme elle est vissée sur la platine, elle assure le montage de l'ensemble du mécanisme différentiel et du mécanisme de commande. Elle permet de loger tous ces éléments dans un espace très restreint.The peripheral toothing of the disc: 27 meshes in the toothing of the wheel of a caleridier mobile 30 rotating on a pin 31 fixed in the Latin p 1. The toothing of calendar calendar pinion drives a 24-hour wheel 32 provided with an elastic finger capable of driving calendar ring 4 once per turn by hooking one of its inner teeth, these being regularly distributed around its periphery . The barrel 28 carries the hour hand 33. It rests on the upper face of the road pinion 25 and is held in place by the last element 34 of the differential gear. This last element, which plays the role of a planetary wheel, is a crown with internal teeth provided with a pivot bearing 35 having a diameter slightly larger than that of the crown teeth and a peripheral external teeth 36. As we seen in the drawing, the element 34 is positioned by the retaining plate 16 which has in its central part a circular hole in which engages the bearing 35. This plate covers the external part of the element 34 and is used to hold in place axially. As it is screwed onto the plate, it assures the assembly of the differential mechanism and the control mechanism. It makes it possible to house all these elements in a very limited space.

La denture 36 de la couronne 34 est en prise avec la denture de roue 14a du mobile 14 qui, comme on l'a vu plus haut, comporte encore l'étoile 14b située immédiatement sous la roue 14a et le pignon 14c situé sous l'étoile 14b. Le renvoi intermédiaire 13 et le mobile 14 pivotent tous deux sur des goupilles plantées dans la platine. Ils sont maintenus en place axialement par des éléments correspondants de la plaque de maintien. Celle-ci présente encore un trou 37 (fig. 1 et 2) servant à limiter les déplacements du renvoi mobile 12 en coopérant avec l'extrémité de l'axe de ce renvoi, cet axe étant solidaire de la bascule 9 et s'étendant en saillie jusqu'au niveau de la partie de la plaque de maintien qui comporte le trou 37.The toothing 36 of the crown 34 is in engagement with the toothing of the wheel 14a of the mobile 14 which, as we have seen above, also includes the star 14b located immediately under the wheel 14a and the pinion 14c located under the star 14b. The intermediate return 13 and the mobile 14 both pivot on pins planted in the plate. They are held in place axially by corresponding elements of the holding plate. The latter also has a hole 37 (fig. 1 and 2) used to limit the movements of the movable gear 12 by cooperating with the end of the axis of this gear, this axis being integral with the rocker 9 and extending projecting to the level of the part of the retaining plate which has the hole 37.

En fonctionnement normal, les aiguilles sont entraînées régulièrement par le moteur de la montre. Alors que l'arbre 19 de l'aiguille des secondes, relié au rotor du moteur par un train d'engrenages, est actionné par impulsions, ce train d'engrenages transmet aussi le couple moteur au pignon 2 et à la roue 3. Celle-ci entraîne la chaussée 22 par friction et comme la couronne 34 est fixe, le pignon de chaussée 25 fait rouler le satellite 26 par sa denture de pignon sur la denture interne de la couronne 34. Il en résulte que le porte satellite 27 qui joue le rôle de roue des heures tourne lentement autour de l'axe du mouvement, entraîné par l'arbre intermédiaire du satellite 26. Les rapports entre les dentures de pignon et de roue du satellite 26, de même que ceux du pignon 25 et de la couronne intérieure 34 et le rayon de l'axe du satellite seront choisis de façon à réaliser une démulti'lication de 1 à 12 entre la vitesse de rotation de la chaussée 22 qui joue le rôle de pignon planétaire et celle de la roue des heures 27 qui joue le rôle de porte-satellite quand la couronne 34 est fixe.In normal operation, the hands are regularly driven by the watch motor. While the shaft 19 of the second hand, connected to the motor rotor by a gear train, is actuated by pulses, this gear train also transmits the engine torque to the pinion 2 and to the wheel 3. That -this causes the roadway 22 by friction and as the crown 34 is fixed, the roadway pinion 25 causes the satellite 26 to roll by its pinion teeth on the internal teeth of the crown 34. As a result, the satellite carrier 27 which plays the hour wheel role rotates slowly around the axis of movement, driven by the intermediate shaft of the satellite 26. The relationships between the pinion and wheel teeth of the satellite 26, as well as those of the pinion 25 and the inner ring 34 and the radius of the satellite axis will be chosen so as to achieve a demulti'application from 1 to 12 between the speed of rotation of the roadway 22 which acts as a planetary gear and that of the hour wheel 27 which plays the role of satellite carrier when the crown 34 is f ninth.

Quand la tige est amenée en position de mise à l'heure, le renvoi 12 est en prise avec le renvoi de mise à l'heure 17 et une rotation de la tige fait tourner le disque 24 solidaire de la chaussée 22. Dans ces conditions, un contact mettra hors circuit le moteur de la montre, l'ensemble du rouage y compris. La roue 3 sera bloquée, tandis que la chaussée 22 liée à friction à la roue 3 sera entraînée à une vitesse relativement élevée. Comme lors du fonctionnement normal, mais à une vitesse plus grande, le pignon 25 fera rouler le satellite 26 sur la couronne intérieure 34_en déplaçant l'aiguille des heures 33 à une vitesse douze fois plus faible que l'aiguille des minutes. Ainsi, les deux aiguilles se déplacent dans leur rapport normal, l'aiguille des secondes étant arrêtée.When the rod is brought into the time setting position, the reference 12 is engaged with the time setting reference 17 and a rotation of the rod rotates the disc 24 secured to the roadway 22. Under these conditions , a contact will switch off the watch engine, including all of the gear train. The wheel 3 will be blocked, while the roadway 22 frictionally connected to the wheel 3 will be driven at a relatively high speed. As in normal operation, but at a higher speed, the pinion 25 will roll the satellite 26 on the inner ring 34_ by moving the hour hand 33 at a speed twelve times lower than the minute hand. Thus, the two hands move in their normal ratio, the second hand being stopped.

Dans la position intermédiaire de la tige, le moteur n'est pas bloqué, de sorte que l'aiguille des secondes avance au rythme imposé par la base de temps de la montre. Si la tige est déplacée en rotation, le renvoi intermédiaire 13 fait tourner le mobile 14 et la rotation de celui-ci est marquée par des positions d'arrêt dans lesquelles la tête du sautoir 15 s'engage entre deux dents de l'étoile 14b. La rotation du mobile 14 est donc une rotation saccadée. L'angle de rotation qui, pour la couronne placée en tête de la tige, correspond à une rotation de 72° du mobile 14 étant de l'ordre de 60°, cet angle est sensiblement celui que l'on impartit facilement à la couronne en la tenant entre le pouce de l'index. Comme la roue 14a est en prise avec la denture extérieure de l'élément 34, c'est maintenant ce dernier qui est entraîné en rotation. Dès lors, les dents de la denture de roue du satellite 26 s'appuient sur le pignon 25 qui joue le rôle de pignon planétaire et le satellite est déplacé en rotation autour de l'axe des aiguilles par la denture intérieure de l'élément 34. Par son axe, le satellite fait tourner la roue 27, en entraînant l'aiguille des heures 33. Le déplacement correspondant à un saut de l'étoile 14b correspond à 1/12 de tour de l'aiguille 33 et par conséquent à une avance d'une heure.In the intermediate position of the rod, the motor is not blocked, so that the second hand advances at the rate imposed by the time base of the watch. If the rod is moved in rotation, the intermediate return 13 rotates the mobile 14 and the rotation of the latter is marked by stop positions in which the head of the jumper 15 engages between two teeth of the star 14b . The rotation of the mobile 14 is therefore a jerky rotation. The angle of rotation which, for the crown placed at the head of the rod, corresponds to a rotation of 72 ° of the mobile 14 being of the order of 60 °, this angle is substantially that which is easily imparted to the crown holding it between the thumb of the index finger. As the wheel 14a is engaged with the external toothing of the element 34, it is now the latter which is driven in rotation. Consequently, the teeth of the wheel teeth of the satellite 26 rest on the pinion 25 which acts as a planetary gear and the satellite is moved in rotation around the axis of the needles by the internal toothing of the element 34. By its axis, the satellite rotates the wheel 27, driving the hour hand 33. The displacement corresponding to a jump of the star 14b corresponds to 1/12 of a turn of the hand 33 and therefore to a advance one hour.

La fig. 4 représente schématiquement l'ensemble de l'engrenage différentiel décrit ci-dessus et montre dans sa partie droite les points d'application des forces. L'élément 34 est entraîné de façon forcée par le mécanisme de commande. Il exerce sur la denture de pignon du satellite 26 une force située au niveau P3, donc un couple donné par le produit de sa distance à l'axe des aiguilles par la force tangentielle. Ce couple produit l'entraînement du mobile des heures en appuyant la denture de roue du satellite sur la denture de chaussée 25. La transmission de force sur le porte-satellite s'effectue au niveau P2, tandis que la réaction sur la chaussée s'effectue au niveau Pl. La force tangentielle exercée sur le pignon planétaire 25 sera réduite dans le rapport des dentures du satellite par rapport à la force tangentielle exercée par l'élément 34 sur la denture de pignon du satellite. Cette force sera elle-même réduite dans le rapport du rayon de la denture de roue à la somme des rayons des dentures du satellite par rapport à la force de résistance tangentielle offerte par le mobile des heures. Même au moment où cette résistance est augmentée par suite de l'armage du mécanisme de calendrier, la réaction sur la chaussée reste minimum.Fig. 4 schematically represents the assembly of the differential gear described above and shows in its right part the points of application of the forces. The element 34 is forcedly driven by the control mechanism. It exerts on the pinion teeth of the satellite 26 a force located at level P3, therefore a torque given by the product of its distance from the axis of the needles by the tangential force. This torque produces the driving of the hour wheel by pressing the toothing of the satellite wheel on the toothing of roadway 25. The force transmission on the planet carrier takes place at level P2, while the reaction on the roadway performs at level Pl. The tangential force exerted on the planetary gear 25 will be reduced in the ratio of the teeth of the satellite to the tangential force exerted by the element 34 on the teeth of the satellite gear. This force will itself be reduced in the ratio of the radius of the wheel teeth to the sum of the radii of the teeth of the satellite with respect to the tangential resistance force offered by the hours wheel. Even when this resistance is increased as a result of arming the calendar mechanism, the reaction on the road remains minimal.

Ainsi donc, par cette disposition de l'ensemble différentiel, on réalise un mécanisme de commande de l'aiguille des heures qui présente le maximum de sécurité en ce qui concerne les risques de réaction sur le moteur lors d'un changement de position de l'aiguille des heures seule.Thus, by this arrangement of the differential assembly, there is provided a mechanism for controlling the hour hand which presents maximum safety with regard to the risks of reaction on the engine during a change of position of the hour hand only.

Dans la forme d'exécution décrite ci-dessus, la construction du mobile des minutes, formé de la chaussée 22, du pignon 25, du disque denté 24 et de la roue 3 peut être améliorée et simplifiée comme le montre la figure partielle 5.In the embodiment described above, the construction of the minute wheel, formed by the carriageway 22, the pinion 25, the toothed disc 24 and the wheel 3 can be improved and simplified as shown in partial figure 5.

Dans cette variante, le pignon 25 est décolleté d'une pièce avec le canon 22 de la chaussée et présente des dents tronquées à leur base. Le disque 24 est chassé sur les dents tronquées du pignon 25 tandis que la portée 22a est située sous le pignon 25, de sorte que la roue 3 se trouve sous le disque 24. Cette disposition simplifie la fabrication puisqu'elle ne comporte plus que trois pièces au lieu de quatre. En outre, le sertissage de la roue 3 sur la portée 22a est plus facile à réaliser.In this variant, the pinion 25 has a neckline in one piece with the barrel 22 of the roadway and has truncated teeth at their base. The disc 24 is driven on the truncated teeth of the pinion 25 while the bearing 22a is located under the pinion 25, so that the wheel 3 is located under the disc 24. This arrangement simplifies the manufacture since it only has three pieces instead of four. In addition, the crimping of the wheel 3 on the bearing 22a is easier to perform.

Claims (6)

1. Mouvement d'horlogerie à aiguilles comprenant un mécanisme à engrenage différentiel commandant la position de l'aiguille des heures et comprenant lui-même un porte-satellite, au moins un satellite à deux dentures coaxiales, un pignon planétaire et une roue planétaire, le ou les satellites étant en prise simultanément avec la roue planétaire et avec le pignon planétaire, caractérisé en ce que le porte-satellite est agencé en roue des heures, le pignon planétaire est agencé en chaussée et la roue planétaire est une couronne à denture intérieure entourant le chemin du ou des satellites et reliée à un organe de commande du mécanisme.1. Clockwork movement with hands comprising a differential gear mechanism controlling the position of the hour hand and itself comprising a planet carrier, at least one satellite with two coaxial teeth, a planetary pinion and a planetary wheel, the satellite or satellites being engaged simultaneously with the planetary wheel and with the planetary gear, characterized in that the planet carrier is arranged in the hour wheel, the planetary gear is arranged in the ground and the planetary wheel is a crown with internal teeth surrounding the path of the satellite (s) and connected to a mechanism control member. 2. Mouvement d'horlogerie selon la revendication 1, caractérisé en ce que ladite couronne à denture intérieure présente également une denture extérieure en prise avec une roue de commande de l'heure qui l'entraîne par sauts ou la bloque dans l'une quelconque de douze orientations déterminées autour de l'axe des aiguilles.2. Clock movement according to claim 1, characterized in that said inner gear crown also has an external toothing engaged with a time control wheel which jumps it or blocks it in any one of twelve orientations determined around the axis of the needles. 3. Mouvement s'horlogerie selon la revendication 2, caractérisé en ce que la roue de commande est solidaire d'une étoile coopérant avec un sautoir et pivote autour d'un axe fixe, le nombre des dents de l'étoile étant tel qu'un saut d'une dent corresponde à une avance d'1/12 de tour de l'aiguille des heures, cette avance étant entraînée par roulage de l'une des dentures du ou des satellites sur la denture de la chaussée.3. Clock movement according to claim 2, characterized in that the control wheel is integral with a star cooperating with a jumper and pivots about a fixed axis, the number of teeth of the star being such that a jump of a tooth corresponds to an advance of 1/12 of a turn of the hour hand, this advance being driven by rolling one of the teeth of the satellite or satellites on the teeth of the road. 4. Mouvement d'horlogerie selon la revendication 1, caractérisé en ce que la chaussée est solidaire d'une denture de grand diamètre en prise avec un organe de mise à l'heure.4. Clock movement according to claim 1, characterized in that the road is integral with a large diameter toothing engaged with a time-setting member. 5. Mouvement d'horlogerie selon la revendication 1, caractérisé en ce qu'une roue des minutes est montée coaxia- lement sur la chaussée, et reliée à cette dernière par un accouplement à friction, cette roue étant entraînée par un organe moteur.5. Clock movement according to claim 1, characterized in that a minute wheel is mounted coaxially on the roadway, and connected to the latter by a friction coupling, this wheel being driven by a drive member. 6. Mouvement d'horlogerie selon la revendication 1, caractérisé en ce que le porte satellite entraîne un mécanisme de calendrier.6. Clock movement according to claim 1, characterized in that the satellite carrier drives a calendar mechanism.
EP79200475A 1978-09-04 1979-08-30 Clockwork with hands comprising a differential-gear mechanism Expired EP0008832B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH926478A CH617815GA3 (en) 1978-09-04 1978-09-04
CH9264/78 1978-09-04

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EP0008832A2 true EP0008832A2 (en) 1980-03-19
EP0008832A3 EP0008832A3 (en) 1980-04-02
EP0008832B1 EP0008832B1 (en) 1982-09-01

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US (1) US4259735A (en)
EP (1) EP0008832B1 (en)
JP (1) JPS5537996A (en)
CH (1) CH617815GA3 (en)
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CH689710GA3 (en) * 1994-01-26 1999-09-15 Erard Raoul Henri Watch having indication complementary to normal time typically twenty four hour time, adjustable for zone
WO2012127056A1 (en) * 2011-03-23 2012-09-27 Samep S.A. - Montres Emile Pequignet Support for display body of a timepiece movement
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US4415272A (en) * 1980-10-30 1983-11-15 Kieninger & Obergfell Fabrik Fur Technische Laufwerke Und Apparate Electrical timepiece with hour-hand adjustment
CH649189GA3 (en) * 1981-12-28 1985-05-15
CH681128B5 (en) * 1990-10-02 1993-07-30 Ebauchesfabrik Eta Ag
US5155712A (en) * 1992-04-20 1992-10-13 Timex Corporation Wheel and pinion assembly with friction drive/slip coupling for a timepiece
ATE428958T1 (en) * 1999-08-04 2009-05-15 Piguet Frederic Sa DEVICE FOR DISPLAYING THE POWER RESERVE OF A WATCH
SG96702A1 (en) * 2001-11-13 2003-06-16 Glashuetter Uhrenbetrieb Gmbh Device for winding and setting the time of a timepiece such as a date-watch including a date disc
FR2867285B1 (en) * 2004-03-03 2009-07-31 Benoit Espiau WATCH
EP2252918B1 (en) * 2008-03-11 2011-10-05 Parmigiani Fleurier S.A. Coaxial horological movement

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FR1589638A (en) * 1967-11-03 1970-03-31
DE1673621A1 (en) * 1967-08-14 1971-05-06 Burg Fred G Device for the optional setting of the hour hand of a clock to the time of a certain time zone
CH513445A (en) * 1967-11-14 1971-05-28 Bulova Watch Co Inc Time zone switching mechanism in a watch

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DE1933049B2 (en) * 1969-06-30 1971-09-30 Durowe Gmbh, 7530 Pforzheim WORLD TIME CLOCK
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DE1673621A1 (en) * 1967-08-14 1971-05-06 Burg Fred G Device for the optional setting of the hour hand of a clock to the time of a certain time zone
FR1589638A (en) * 1967-11-03 1970-03-31
CH513445A (en) * 1967-11-14 1971-05-28 Bulova Watch Co Inc Time zone switching mechanism in a watch

Cited By (8)

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Publication number Priority date Publication date Assignee Title
FR2541005A1 (en) * 1982-09-29 1984-08-17 Timex Corp MECHANISM FOR ADJUSTING DATES FOR A CALENDAR WATCH
CH674290GA3 (en) * 1988-06-17 1990-05-31 Watch face time zone areas display - displays place where particular time zone is operative, with time zone area actuated by wearer
CH689710GA3 (en) * 1994-01-26 1999-09-15 Erard Raoul Henri Watch having indication complementary to normal time typically twenty four hour time, adjustable for zone
WO2012127056A1 (en) * 2011-03-23 2012-09-27 Samep S.A. - Montres Emile Pequignet Support for display body of a timepiece movement
FR2973125A1 (en) * 2011-03-23 2012-09-28 Samep Montres Emile Pequignet SUPPORT FOR MOVING WATCH DISPLAY MEMORY
US8867316B2 (en) 2011-03-23 2014-10-21 Pequignet S.A. Support for display member of a timepiece movement
EP2615506A1 (en) * 2012-01-10 2013-07-17 Montres Breguet SA Device for rapid correction of a display system
US8837260B2 (en) 2012-01-10 2014-09-16 Montres Breguet S.A. Quick correction device for a display system

Also Published As

Publication number Publication date
CH617815B (en)
JPS5537996A (en) 1980-03-17
EP0008832A3 (en) 1980-04-02
EP0008832B1 (en) 1982-09-01
DE2963613D1 (en) 1982-10-28
CH617815GA3 (en) 1980-06-30
US4259735A (en) 1981-03-31

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