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EP1658532B1 - Winding state indicator mechanism for a mechanical timepiece - Google Patents

Winding state indicator mechanism for a mechanical timepiece Download PDF

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Publication number
EP1658532B1
EP1658532B1 EP04738075A EP04738075A EP1658532B1 EP 1658532 B1 EP1658532 B1 EP 1658532B1 EP 04738075 A EP04738075 A EP 04738075A EP 04738075 A EP04738075 A EP 04738075A EP 1658532 B1 EP1658532 B1 EP 1658532B1
Authority
EP
European Patent Office
Prior art keywords
wheel
barrel
gear
shaft
gearwheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04738075A
Other languages
German (de)
French (fr)
Other versions
EP1658532A1 (en
Inventor
Paul Gerber
Willy Meier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eterna AG Uhrenfabrik
Original Assignee
Eterna AG Uhrenfabrik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eterna AG Uhrenfabrik filed Critical Eterna AG Uhrenfabrik
Priority to EP04738075A priority Critical patent/EP1658532B1/en
Publication of EP1658532A1 publication Critical patent/EP1658532A1/en
Application granted granted Critical
Publication of EP1658532B1 publication Critical patent/EP1658532B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/12—Driving mechanisms with mainspring with several mainsprings
    • 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
    • G04B9/00—Supervision of the state of winding, e.g. indicating the amount of winding
    • G04B9/005—Supervision of the state of winding, e.g. indicating the amount of winding by optical indication of the amount of winding
    • 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
    • G04B9/00—Supervision of the state of winding, e.g. indicating the amount of winding
    • G04B9/02—Devices controlled by such state, e.g. device affording protection means against overwinding
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0866—Special arrangements
    • G04F7/089—Special arrangements indicating measured time by other than hands, e.g. numbered bands, drums, discs or sheet
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0866—Special arrangements
    • G04F7/0895—Special arrangements with a separate barrel for the chronograph functions

Definitions

  • the present invention relates to mechanical watch movements whose energy is provided by a spring contained in a barrel. It relates, more particularly, to a mechanism indicating the power reserve of a mechanical timepiece movement with a main barrel for driving the finishing gear and at least one second barrel for training. a gear train assigned to an auxiliary function that must be provided for a specified minimum period.
  • Such a mechanism applies especially well to a chronograph mechanical watch movement displaying the hour and minute of time timed using discs.
  • the determined minimum duration is equal to the maximum measurable time.
  • the problem that arises then is that of the mechanical energy necessary to drive the discs.
  • the single barrel may indeed be difficult, which disrupts the amplitude of the oscillations of the pendulum and, consequently, the proper functioning of the chronograph wheel.
  • EP Application No. 03 405532.7 provides a solution to this problem by proposing a movement in which the discs of hours, tens of minutes and units of minutes of timed time are each driven by their own barrel.
  • the present invention aims to meet this need.
  • EP 12 60 883 discloses a watch with two barrels operating in series with display of the total power reserve.
  • the indicated power reserve is that of the cylinder having the shortest reserve.
  • the chronograph watch shown diagrammatically in FIG. 1 is intended to display, on a dial 10, in a conventional manner, the hour, minute and second of the current time by means of two central hands 11, 12 and a small hand at 9:13 am
  • the watch also displays the seconds of timed time using a central hand 14, while the indications of the hours, tens of minutes and minutes units of the timed time are provided respectively by three discs 15, 16 and 17 appearing behind windows in the dial 10.
  • a small needle 18 and a small rotating dial 19 are arranged at 6 o'clock to display the power reserve of the coin, as will be described with reference to FIG.
  • this watch has, as a base, a mechanical caliber of the chronograph type, such as that marketed by ETA SA (Switzerland) under the reference 7750. It is coupled to a complementary mechanism described in detail in document EP 03 405 532.7 above and providing driving of disks 15, 16 and 17.
  • a ring 20 is used for winding and setting time, while two pushers 21 and 22 respectively control the start and stop, and the zeroing of the chronograph mechanism.
  • FIG. 2 divided into two parts 2a and 2b, in which only the members participating in the power reserve display function are represented.
  • FIG. 2a there is shown in 23 the barrel of the base movement which is the main engine of the watch.
  • This barrel which typically has a running time of approximately 40 hours, comprises, inside its drum, a spring (not shown) provided with a sliding flange serving, when fully armed, to limit its surge.
  • Its shaft 24 carries a ratchet 25 which can be driven from the crown 20 by the winding pinion and the crown wheel (not shown).
  • the outer toothing 26 of the drum meshes with the work train (not shown) which drives the hour hands 11, minute 12 and second 13.
  • the shaft 24 carries a wheel 27 meshing with a gear 28 which itself meshes with a wheel 29 fixed to the shaft 30 of a second cylinder 31 whose drum also contains a spring slippery flange and whose running time is the one during which the chronograph function must be ensured. Typically, this walking time is 10 hours.
  • the outer toothing 32 of the drum of this barrel meshes with a gear train (not shown) which drives the display disc 17 of the minute units of the timed time.
  • the shaft 30 also carries, on the same side, a ratchet 33 which meshes with a gear train terminating in the ratchet of a third cylinder (not shown) serving to drive the display disk 16 tens of minutes of the timed time.
  • the third barrel actuates a fourth barrel for driving the display disc hours of timed time 15.
  • the shaft 30 carries a pinion 34 which meshes with a wheel 35 whose pinion 36 meshes with a wheel 37 provided with a pin 38 and carrying the power reserve indicator dial 19.
  • the wheel 37 is pivotally mounted on a shaft 39 on which the power reserve indicator needle 18 is mounted and, on the opposite side, a wheel 40 (visible in FIG 2b) provided with a circular opening 41 whose length corresponds to the time during which the chronograph function must be ensured, approximately 10 hours.
  • the shaft 39 carries, frictionally mounted, a wheel 42 which meshes with the pinion 43 of a wheel 44 whose shaft serves as a pivot to the wheel 35 and which meshes with a second pinion 45 carried by the shaft 30 of the second cylinder 31.
  • the shaft 39 carries, between the open wheel 40 and the friction wheel 42, a pinion 46 which meshes with a return 47 meshing with a wheel 48 having a circular opening 49 whose length corresponds to a rotation time of about 30 hours.
  • a wheel 50 mounted free to rotate on the shaft 51 of the wheel 48, is provided with a lug 52 which fits into the opening 49.
  • the wheel 50 meshes with a pinion 53 whose shaft 54 carries, frictionally mounted, a wheel 55 meshing, via a return 56, with a pinion 57 whose shaft 58 carries a pinion 59 meshing with the a wolf toothing with a mobile 60 which meshes with the external toothing 26 of the drum of the main barrel 23.
  • the shaft 24 raises the spring of the main barrel 23 and, at the same time, the spring of the second barrel 31 by the intermediate of the mobiles 27, 28 and 29 and the shaft 30.
  • the pinion 34 also carried by the shaft 30, drives, through the wheel 35 and its pinion 36, the wheel 37 and the power reserve indicator dial 19 which, rotating in the counterclockwise direction, that the needle 18, almost immobile, indicates an increase in the power reserve.
  • the lug 38 of the wheel 37 moves freely in the opening 41 of the wheel 40 which, therefore, does not rotate.
  • the needle 18 indicates, on the dial 19, a power reserve of 10 hours.
  • the lug 38 also comes into abutment on the end of the opening 41 of the wheel 40.
  • the wheel 40 starts to rotate under the action of the lug 38, thus driving the needle 18 at the same time as its dial 19, so that the display of the power reserve remains over 10 hours.
  • the wheel 42 being mounted frictionally on the pinion 46, it remains in a position corresponding to that of the barrel 31 with which it is connected by the pinion 43, the wheel 44 and the pinion 45.
  • the wheel 40 also drives, via the pinion 46 and the return 47, the wheel 48 whose opening 49 receives the lug 52 of the wheel 50. At the time when the reassembly reaches a state corresponding to a running time about 30 hours, this lug comes into abutment on the end of the opening 48.
  • the wheel 50 starts to rotate and, through the movable 53, 55, 56, 57 and 58 drives the pinion 59 The latter, however, because of the presence of the wolf gear 60, has no effect on the main barrel 23.
  • the drum of the main barrel 23 is the only one in action and therefore causes the display gear of the current time by its external toothing 26, which also drives the worm gear 60 which, in this direction of rotation, communicates its movement to the pin wheel 50.
  • the wheel 50 will thus rotate for about 30 hours without influencing the display of the power reserve, always 10 hours, since its lug 52 flows freely in the opening 49 of the wheel 48. After these 30 hours of operation, the lug reaches the stop on the end of the opening 49 and the wheel 48 begins to rotate.
  • the pinion 46 and the shaft 39 it begins to rotate the power reserve indicator needle 18 counterclockwise from the 10 o'clock position.
  • the second barrel 31 is inactive and the wheel 42 is therefore immobile, the movement of the needle 18 is allowed since this wheel is frictionally mounted on the shaft 39.
  • the second cylinder 31 is activated every minute and influences the indication of the power reserve. Its pinion 45 thus begins to drive, through the wheel 44, the pinion 43, the wheel 42 and the shaft 39, the power reserve indicator needle 18 which begins to move in the direction counterclockwise.
  • the shaft 39 drives the pinion 46 and the wheel 40. The latter meshes with its pinion 46 with the return 47 which drives the open wheel 48.
  • the main cylinder is still in action and drives the wheel 50 whose lug 52 will come into abutment on the end of the opening 49 of the wheel 48 after 30 hours, to which is added the time during which the chronograph mechanism has operated, because of the synchronous movement of the wheels 50 and 48.
  • the chronograph mechanism was switched on for 3 hours, the lug 52 will not come to a stop until after 33 hours.
  • the needle 18 indicates a power reserve equal to 10 hours minus 3 hours, it will arrive at zero after 40 hours of operation of the main cylinder.
  • the lug 52 also turns the wheel 48. It is then imperative to prevent the two barrels add their actions on the control of the needle 18.
  • the wheel 48 is also urged by the rotation of the wheel 42 driven by the second cylinder 31.
  • the wheels 48 and 50 are driven at the same speed and with a frost gearing equal to at least one minute (made necessary by the fact that the barrel 31 advances in steps of one minute)
  • the lug 52 of the wheel will remain in the same relative position relative to the end of the opening 49 of the wheel 48.
  • the needle 18 is thus driven without conflict between the two barrels, the same power reserve displayed corresponding to that of the main barrel.
  • the described mechanism is integrated in a watch provided with manual winding of the barrel springs. It is obvious that it can, without further, be applied to a self-winding watch.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Electromechanical Clocks (AREA)
  • Surgical Instruments (AREA)
  • Sanitary Thin Papers (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Endoscopes (AREA)

Abstract

The mechanism has a power reserve indicator unit comprising a needle (18) and a dial (19) serving to read position of the needle. Two wheels connecting barrels to the indicator unit and the indicator unit are arranged such that the indicated power reserve corresponds to time remaining for assuring auxiliary function. The indicated power reserve denotes the barrel having shortest reserve.

Description

La présente invention se rapporte aux mouvements de montres mécaniques dont l'énergie est fournie par un ressort contenu dans un barillet. Elle concerne, plus particulièrement, un mécanisme indicateur de la réserve de marche d'un mouvement de pièce d'horlogerie mécanique doté d'un barillet principal pour l'entraînement du rouage de finissage et d'au moins un deuxième barillet pour l'entraînement d'un rouage affecté à une fonction auxiliaire qui doit être assurée pendant une durée minimum déterminée.The present invention relates to mechanical watch movements whose energy is provided by a spring contained in a barrel. It relates, more particularly, to a mechanism indicating the power reserve of a mechanical timepiece movement with a main barrel for driving the finishing gear and at least one second barrel for training. a gear train assigned to an auxiliary function that must be provided for a specified minimum period.

Un tel mécanisme s'applique spécialement bien à un mouvement de montre mécanique chronographe affichant l'heure et la minute du temps chronométré à l'aide de disques. Dans ce cas, la durée minimum déterminée est égale au temps maximum mesurable.Such a mechanism applies especially well to a chronograph mechanical watch movement displaying the hour and minute of time timed using discs. In this case, the determined minimum duration is equal to the maximum measurable time.

On sait que ce type d'affichage permet, mieux qu'un affichage par aiguilles, de fournir des indications de grandes dimensions, donc de lecture plus rapide et plus facile, comme peuvent le souhaiter, par exemple, les pilotes d'avion.It is known that this type of display makes it possible, better than a display by needles, to provide indications of large dimensions, thus reading faster and easier, as may wish, for example, aircraft pilots.

Le problème qui se pose alors est celui de l'énergie mécanique nécessaire à l'entraînement des disques. Le barillet unique risque, en effet, d'être à la peine, ce qui perturbe l'amplitude des oscillations du balancier et, par conséquent, le bon fonctionnement du rouage de chronographe.The problem that arises then is that of the mechanical energy necessary to drive the discs. The single barrel may indeed be difficult, which disrupts the amplitude of the oscillations of the pendulum and, consequently, the proper functioning of the chronograph wheel.

La demande EP No 03 405532.7 apporte une solution à ce problème en proposant un mouvement dans lequel les disques des heures, des dizaines de minutes et des unités de minutes de temps chronométré sont entraînés chacun par leur propre barillet.EP Application No. 03 405532.7 provides a solution to this problem by proposing a movement in which the discs of hours, tens of minutes and units of minutes of timed time are each driven by their own barrel.

Dans un tel produit, il est très utile, pour garantir la fonction chronographe sur une durée minimale, que le porteur possède d'une indication de la réserve de marche dont le mouvement dispose, aussi bien pour la fonction de base que pour la fonction chronographe.In such a product, it is very useful, in order to guarantee the chronograph function over a minimum period, that the wearer has an indication of the reserve of movement whose movement has both the basic function and the chronograph function.

La présente invention a pour but de répondre à ce besoin.The present invention aims to meet this need.

Le document EP 12 60 883 divulgue une montre avec deux barillets fonctionnant en série avec affichage de la réserve de marche totale.EP 12 60 883 discloses a watch with two barrels operating in series with display of the total power reserve.

Pour atteindre ce but, le mécanisme indicateur de réserve de marche comme défini par la revendication 1, comporte :

  • des moyens indicateurs de réserve de marche comprenant une aiguille et un cadran servant à la lecture de la position de l'aiguille,
  • des premier et deuxième rouages reliant auxdits moyens indicateurs respectivement le barillet principal et le deuxième barillet,
  • ces moyens et ces rouages étant agencés de manière à ce que la réserve de marche indiquée corresponde au temps restant pour assurer la fonction auxiliaire.
To achieve this goal, the power reserve indicator mechanism as defined by claim 1, comprises:
  • indicator power reserve means comprising a needle and a dial for reading the position of the needle,
  • first and second wheels connecting to said indicator means respectively the main cylinder and the second cylinder,
  • these means and these wheels being arranged in such a way that the power reserve indicated corresponds to the time remaining to provide the auxiliary function.

De façon avantageuse, la réserve de marche indiquée est celle du barillet ayant la réserve la plus courte.Advantageously, the indicated power reserve is that of the cylinder having the shortest reserve.

Selon un mode de réalisation préféré, les moyens indicateurs et les rouages sont tels que :

  • tant que la pièce fonctionne sans la fonction chronographe, l'aiguille se met en mouvement seulement après un temps de marche correspondant à la différence entre le temps de marche du barillet principal et celui du deuxième barillet,
  • dès que la fonction chronographe est enclenchée, l'aiguille se met en mouvement et indique la réserve de marche du barillet ayant la réserve la plus courte.
According to a preferred embodiment, the indicator means and the wheels are such that:
  • as long as the piece operates without the chronograph function, the needle starts moving only after a running time corresponding to the difference between the running time of the main cylinder and that of the second cylinder,
  • as soon as the chronograph function is engaged, the needle starts moving and indicates the power reserve of the cylinder having the shortest reserve.

Par ailleurs, les moyens indicateurs et les rouages sont tels que :

  • tant que le remontage de la pièce n'a pas atteint un état correspondant à un temps de marche égal à celui du deuxième barillet, le cadran tourne mais l'aiguille reste immobile,
  • dès que le remontage a atteint ledit état, le cadran et l'aiguille tournent en même temps.
In addition, the indicator means and the mechanisms are such that:
  • until the reassembly of the piece has reached a state corresponding to a running time equal to that of the second barrel, the dial rotates but the needle remains stationary,
  • as soon as the winding has reached the said state, the dial and the needle turn at the same time.

D'autres caractéristiques de l'invention ressortiront de la description qui va suivre, faite en regard du dessin annexé, dans lequel:

  • la figure 1 représente une montre chronographe munie d'un mouvement affichant le temps chronométré à l'aide de disques; et
  • la figure 2 est une vue des organes de ce mouvement qui fournissent une indication de sa réserve de marche.
Other features of the invention will emerge from the description which follows, given with reference to the appended drawing, in which:
  • FIG. 1 represents a chronograph watch equipped with a movement displaying the timed time using discs; and
  • Figure 2 is a view of the organs of this movement that provide an indication of its power reserve.

La montre chronographe représentée schématiquement à la figure 1 est destinée à afficher, sur un cadran 10, de manière classique, l'heure, la minute et la seconde du temps courant à l'aide de deux aiguilles centrales 11, 12 et une petite aiguille à 9 heures 13.The chronograph watch shown diagrammatically in FIG. 1 is intended to display, on a dial 10, in a conventional manner, the hour, minute and second of the current time by means of two central hands 11, 12 and a small hand at 9:13 am

La montre affiche aussi les secondes de temps chronométré à l'aide d'une aiguille centrale 14, tandis que les indications des heures, des dizaines de minutes et des unités de minutes du temps chronométré sont fournies respectivement par trois disques 15, 16 et 17 apparaissant derrière des guichets ménagés dans le cadran 10.The watch also displays the seconds of timed time using a central hand 14, while the indications of the hours, tens of minutes and minutes units of the timed time are provided respectively by three discs 15, 16 and 17 appearing behind windows in the dial 10.

Enfin, une petite aiguille 18 et un petit cadran tournant 19 sont disposés à 6 heures pour afficher la réserve de marche de la pièce, comme cela sera décrit en regard de la figure 2.Finally, a small needle 18 and a small rotating dial 19 are arranged at 6 o'clock to display the power reserve of the coin, as will be described with reference to FIG.

Le mouvement de cette montre a, comme base, un calibre mécanique de type chronographe, tel que celui commercialisé par la maison ETA SA (Suisse) sous la référence 7750. Il est accouplé à un mécanisme complémentaire décrit en détail dans le document EP 03 405 532.7 susmentionné et assurant l'entraînement des disques 15, 16 et 17.The movement of this watch has, as a base, a mechanical caliber of the chronograph type, such as that marketed by ETA SA (Switzerland) under the reference 7750. It is coupled to a complementary mechanism described in detail in document EP 03 405 532.7 above and providing driving of disks 15, 16 and 17.

De manière classique, une couronne 20 sert au remontage et à la mise à l'heure, tandis que deux poussoirs 21 et 22 commandent respectivement le départ et l'arrêt, et la mise à zéro du mécanisme de chronographe.Conventionally, a ring 20 is used for winding and setting time, while two pushers 21 and 22 respectively control the start and stop, and the zeroing of the chronograph mechanism.

On se référera maintenant à la figure 2, scindée en deux parties 2a et 2b, sur laquelle seuls sont représentés les organes participant à la fonction d'affichage de la réserve de marche.Reference will now be made to FIG. 2, divided into two parts 2a and 2b, in which only the members participating in the power reserve display function are represented.

Sur la figure 2a, on a représenté en 23 le barillet du mouvement de base qui constitue le moteur principal de la montre. Ce barillet qui a, typiquement, un temps de marche d'environ 40 heures, comporte, à l'intérieur de son tambour, un ressort (non représenté) muni d'une bride glissante servant, lorsqu'il est complètement armé, à limiter sa surtension. Son arbre 24 porte un rochet 25 qui peut être entraîné, à partir de la couronne 20, par le pignon de remontoir et la roue de couronne (non représentés). La denture extérieure 26 du tambour engrène avec le rouage de finissage (non représenté) qui entraîne les aiguilles d'heure 11, de minute 12 et de seconde 13.In Figure 2a, there is shown in 23 the barrel of the base movement which is the main engine of the watch. This barrel, which typically has a running time of approximately 40 hours, comprises, inside its drum, a spring (not shown) provided with a sliding flange serving, when fully armed, to limit its surge. Its shaft 24 carries a ratchet 25 which can be driven from the crown 20 by the winding pinion and the crown wheel (not shown). The outer toothing 26 of the drum meshes with the work train (not shown) which drives the hour hands 11, minute 12 and second 13.

A l'opposé du rochet 25, l'arbre 24 porte une roue 27 engrenant avec un renvoi 28 qui engrène lui-même avec une roue 29 fixée sur l'arbre 30 d'un deuxième barillet 31 dont le tambour contient également un ressort à bride glissante et dont le temps de marche est celui pendant lequel la fonction chronographe doit être assurée. Typiquement, ce temps de marche est de 10 heures. La denture extérieure 32 du tambour de ce barillet engrène avec un rouage (non représenté) assurant l'entraînement du disque d'affichage 17 des unités de minutes du temps chronométré. L'arbre 30 porte également, du même côté, un rochet 33 qui engrène avec un rouage aboutissant au rochet d'un troisième barillet (non représentés) servant à entraîner le disque 16 d'affichage des dizaines de minutes du temps chronométré.Opposite the ratchet 25, the shaft 24 carries a wheel 27 meshing with a gear 28 which itself meshes with a wheel 29 fixed to the shaft 30 of a second cylinder 31 whose drum also contains a spring slippery flange and whose running time is the one during which the chronograph function must be ensured. Typically, this walking time is 10 hours. The outer toothing 32 of the drum of this barrel meshes with a gear train (not shown) which drives the display disc 17 of the minute units of the timed time. The shaft 30 also carries, on the same side, a ratchet 33 which meshes with a gear train terminating in the ratchet of a third cylinder (not shown) serving to drive the display disk 16 tens of minutes of the timed time.

Comme décrit dans le document EP 03 405 532.7 déjà cité, le troisième barillet actionne un quatrième barillet servant à entraîner le disque d'affichage des heures du temps chronométré 15.As described in the document EP 03 405 532.7 already cited, the third barrel actuates a fourth barrel for driving the display disc hours of timed time 15.

A l'opposé du rochet 33, l'arbre 30 porte un pignon 34 qui engrène avec une roue 35 dont le pignon 36 engrène avec une roue 37 dotée d'un ergot 38 et portant le cadran indicateur de réserve de marche 19.Opposite the ratchet 33, the shaft 30 carries a pinion 34 which meshes with a wheel 35 whose pinion 36 meshes with a wheel 37 provided with a pin 38 and carrying the power reserve indicator dial 19.

La roue 37 est montée pivotante sur un arbre 39 sur lequel sont montées l'aiguille indicatrice de réserve de marche 18 et, à l'opposé, une roue 40 (visible à la fig. 2b) munie d'une ouverture circulaire 41 dont la longueur correspond au temps pendant lequel la fonction chronographe doit être assurée, soit 10 heures environ.The wheel 37 is pivotally mounted on a shaft 39 on which the power reserve indicator needle 18 is mounted and, on the opposite side, a wheel 40 (visible in FIG 2b) provided with a circular opening 41 whose length corresponds to the time during which the chronograph function must be ensured, approximately 10 hours.

A l'opposé de l'aiguille 18, l'arbre 39 porte, montée à friction, une roue 42 qui engrène avec le pignon 43 d'une roue 44 dont l'arbre sert de pivot à la roue 35 et qui engrène avec un deuxième pignon 45 porté par l'arbre 30 du deuxième barillet 31.Opposite the needle 18, the shaft 39 carries, frictionally mounted, a wheel 42 which meshes with the pinion 43 of a wheel 44 whose shaft serves as a pivot to the wheel 35 and which meshes with a second pinion 45 carried by the shaft 30 of the second cylinder 31.

Comme le montre la figure 2b où l'on retrouve l'aiguille 18, le cadran 19 et les organes associés décrits en regard de la figure 2a, l'arbre 39 porte, entre la roue ouverte 40 et la roue à friction 42, un pignon 46 qui engrène avec un renvoi 47 engrenant avec une roue 48 dotée d'une ouverture circulaire 49 dont la longueur correspond à une durée de rotation d'environ 30 heures. Une roue 50, montée libre en rotation sur l'arbre 51 de la roue 48, est munie d'un ergot 52 prenant place dans l'ouverture 49.As shown in FIG. 2b where the needle 18, the dial 19 and the associated members described with reference to FIG. 2a are found, the shaft 39 carries, between the open wheel 40 and the friction wheel 42, a pinion 46 which meshes with a return 47 meshing with a wheel 48 having a circular opening 49 whose length corresponds to a rotation time of about 30 hours. A wheel 50, mounted free to rotate on the shaft 51 of the wheel 48, is provided with a lug 52 which fits into the opening 49.

La roue 50 engrène avec un pignon 53 dont l'arbre 54 porte, montée à friction, une roue 55 engrenant, par l'intermédiaire d'un renvoi 56, avec un pignon 57 dont l'arbre 58 porte un pignon 59 engrenant au moyen d'une denture de loup avec un mobile 60 qui engrène avec la denture extérieure 26 du tambour du barillet principal 23.The wheel 50 meshes with a pinion 53 whose shaft 54 carries, frictionally mounted, a wheel 55 meshing, via a return 56, with a pinion 57 whose shaft 58 carries a pinion 59 meshing with the a wolf toothing with a mobile 60 which meshes with the external toothing 26 of the drum of the main barrel 23.

Le fonctionnement du mécanisme selon l'invention va être maintenant décrit dans les quatre situations suivantes :

  • remontage des 10 premières heures,
  • remontage au delà de 10 heures,
  • marche sans la fonction chronographe,
  • marche avec la fonction chronographe.
The operation of the mechanism according to the invention will now be described in the following four situations:
  • reassembly of the first 10 hours,
  • reassembly beyond 10 hours,
  • walk without the chronograph function,
  • works with the chronograph function.

1. Remontage des 10 premières heures1. Reassembly of the first 10 hours

Lorsque le rochet 25 est entraîné, à partir de la couronne 20, par le pignon de remontoir et la roue de couronne, l'arbre 24 remonte le ressort du barillet principal 23 et, en même temps, le ressort du deuxième barillet 31 par l'intermédiaire des mobiles 27, 28 et 29 et de l'arbre 30.When the ratchet 25 is driven, from the ring gear 20, by the winding pinion and the ring gear, the shaft 24 raises the spring of the main barrel 23 and, at the same time, the spring of the second barrel 31 by the intermediate of the mobiles 27, 28 and 29 and the shaft 30.

Le pignon 34, également porté par l'arbre 30, entraîne, par l'intermédiaire de la roue 35 et de son pignon 36, la roue 37 et le cadran indicateur de réserve de marche 19 qui, tournant dans le sens anti-horaire, fait que l'aiguille 18, pratiquement immobile, indique un accroissement de la réserve de marche. En même temps, l'ergot 38 de la roue 37 se déplace librement dans l'ouverture 41 de la roue 40 qui, donc, ne tourne pas.The pinion 34, also carried by the shaft 30, drives, through the wheel 35 and its pinion 36, the wheel 37 and the power reserve indicator dial 19 which, rotating in the counterclockwise direction, that the needle 18, almost immobile, indicates an increase in the power reserve. At the same time, the lug 38 of the wheel 37 moves freely in the opening 41 of the wheel 40 which, therefore, does not rotate.

Au moment où le remontage atteint un état correspondant à une durée de marche d'au moins 10 heures pour les deux barillets, l'aiguille 18 indique, sur le cadran 19, une réserve de marche de 10 heures. L'ergot 38 vient aussi en butée sur l'extrémité de l'ouverture 41 de la roue 40.At the moment when the winding reaches a state corresponding to a running time of at least 10 hours for the two barrels, the needle 18 indicates, on the dial 19, a power reserve of 10 hours. The lug 38 also comes into abutment on the end of the opening 41 of the wheel 40.

2. Remontage au delà de 10 heures2. Reassembly beyond 10 hours

Lorsque le remontage se poursuit, la roue 40 se met à tourner sous l'action de l'ergot 38, entraînant ainsi l'aiguille 18 en même temps que son cadran 19, de telle sorte que l'affichage de la réserve de marche reste sur 10 heures. La roue 42 étant montée à friction sur le pignon 46, elle reste dans une position correspondant à celle du barillet 31 avec lequel elle est reliée par le pignon 43, la roue 44 et le pignon 45.When reassembly continues, the wheel 40 starts to rotate under the action of the lug 38, thus driving the needle 18 at the same time as its dial 19, so that the display of the power reserve remains over 10 hours. The wheel 42 being mounted frictionally on the pinion 46, it remains in a position corresponding to that of the barrel 31 with which it is connected by the pinion 43, the wheel 44 and the pinion 45.

La roue 40 entraîne aussi, par l'intermédiaire du pignon 46 et du renvoi 47, la roue 48 dont l'ouverture 49 reçoit l'ergot 52 de la roue 50. Au moment où le remontage atteint un état correspondant à une durée de marche d'environ 30 heures, cet ergot vient en butée sur l'extrémité de l'ouverture 48. La roue 50 se met donc à tourner et, par l'intermédiaire des mobiles 53, 55, 56, 57 et 58 entraîne le pignon 59. Celui-ci, toutefois, du fait de la présence du mobile à denture de loup 60, n'a pas d'effet sur le barillet principal 23.The wheel 40 also drives, via the pinion 46 and the return 47, the wheel 48 whose opening 49 receives the lug 52 of the wheel 50. At the time when the reassembly reaches a state corresponding to a running time about 30 hours, this lug comes into abutment on the end of the opening 48. The wheel 50 starts to rotate and, through the movable 53, 55, 56, 57 and 58 drives the pinion 59 The latter, however, because of the presence of the wolf gear 60, has no effect on the main barrel 23.

On notera que, du fait de l'utilisation de ressorts à bride glissante, le remontage par l'actionnement de la couronne de remontoir 20 peut se poursuivre sans dommage.Note that, because of the use of springs with sliding flange, the winding by actuation of the winding crown 20 can continue without damage.

3. Marche sans la fonction chronographe3. Walking without the chronograph function

En fonctionnement normal de la montre, le tambour du barillet principal 23 est le seul en action et entraîne donc le rouage d'affichage du temps courant par sa denture extérieure 26, laquelle entraîne également le mobile à denture de loup 60 qui, dans ce sens de rotation, communique son mouvement à la roue à ergot 50.In normal operation of the watch, the drum of the main barrel 23 is the only one in action and therefore causes the display gear of the current time by its external toothing 26, which also drives the worm gear 60 which, in this direction of rotation, communicates its movement to the pin wheel 50.

En admettant que la pièce a été remontée à fond, la roue 50 va ainsi tourner pendant environ 30 heures sans influencer l'affichage de la réserve de marche, toujours sur 10 heures, car son ergot 52 circule librement dans l'ouverture 49 de la roue 48. Au bout de ces 30 heures de marche, l'ergot arrive en butée sur l'extrémité de l'ouverture 49 et la roue 48 se met à tourner. Par l'intermédiaire du renvoi 47, du pignon 46 et de l'arbre 39, elle commence à faire tourner l'aiguille indicatrice de réserve de marche 18 dans le sens anti-horaire à partir de la position 10 heures. Bien que le deuxième barillet 31 soit inactif et que la roue 42 soit donc immobile, le mouvement de l'aiguille 18 est autorisé puisque cette roue est montée à friction sur l'arbre 39.Assuming that the part has been raised completely, the wheel 50 will thus rotate for about 30 hours without influencing the display of the power reserve, always 10 hours, since its lug 52 flows freely in the opening 49 of the wheel 48. After these 30 hours of operation, the lug reaches the stop on the end of the opening 49 and the wheel 48 begins to rotate. Through the reference 47, the pinion 46 and the shaft 39, it begins to rotate the power reserve indicator needle 18 counterclockwise from the 10 o'clock position. Although the second barrel 31 is inactive and the wheel 42 is therefore immobile, the movement of the needle 18 is allowed since this wheel is frictionally mounted on the shaft 39.

Lorsque l'aiguille 18 aura ainsi parcouru un chemin correspondant au déplacement de l'ergot 38 dans l'ouverture 41 de la roue 40, soit de 10 heures, elle indiquera une réserve 0 sur le cadran 19 et le barillet principal 23 se sera donc déchargé d'environ 40 heures.When the needle 18 has thus traveled a path corresponding to the displacement of the lug 38 in the opening 41 of the wheel 40, that is to say 10 hours, it will indicate a reserve 0 on the dial 19 and the main barrel 23 will therefore be discharged about 40 hours.

On notera que, grâce à la présence de la roue à friction 55 intercalée dans le rouage reliant l'arbre 39 au barillet 23, celui-ci n'est pas empêché de se décharger complètement lorsque l'aiguille 18 est arrivée à la position 0.Note that, thanks to the presence of the friction wheel 55 interposed in the gear train connecting the shaft 39 to the barrel 23, it is not prevented from being completely discharged when the needle 18 has arrived at the 0 position. .

4. Marche avec la fonction chronographe4. Walking with the chronograph function

Dès l'enclenchement de la fonction chronographe, le deuxième barillet 31 est mis en action chaque minute et influence l'indication de la réserve de marche. Son pignon 45 se met donc à entraîner, par l'intermédiaire de la roue 44, du pignon 43, de la roue 42 et de l'arbre 39, l'aiguille indicatrice de réserve de marche 18 qui commence à se déplacer dans le sens anti-horaire. L'arbre 39 entraîne le pignon 46 et la roue 40. Cette dernière engrène par son pignon 46 avec le renvoi 47 qui entraîne la roue ouverte 48.As soon as the chronograph function is activated, the second cylinder 31 is activated every minute and influences the indication of the power reserve. Its pinion 45 thus begins to drive, through the wheel 44, the pinion 43, the wheel 42 and the shaft 39, the power reserve indicator needle 18 which begins to move in the direction counterclockwise. The shaft 39 drives the pinion 46 and the wheel 40. The latter meshes with its pinion 46 with the return 47 which drives the open wheel 48.

Evidemment, le barillet principal est toujours en action et entraîne la roue 50 dont l'ergot 52 arrivera en butée sur l'extrémité de l'ouverture 49 de la roue 48 au bout de 30 heures, auquel s'ajoute le temps durant lequel le mécanisme de chronographe a fonctionné, à cause du mouvement synchrone des roues 50 et 48. En d'autres termes, si le mécanisme de chronographe a été enclenché durant 3 heures, l'ergot 52 n'arrivera en butée qu'au bout de 33 heures. Comme l'aiguille 18 indique une réserve de marche égale à 10 heures moins 3 heures, elle arrivera bien à zéro après 40 heures de fonctionnement du barillet principal.Obviously, the main cylinder is still in action and drives the wheel 50 whose lug 52 will come into abutment on the end of the opening 49 of the wheel 48 after 30 hours, to which is added the time during which the chronograph mechanism has operated, because of the synchronous movement of the wheels 50 and 48. In other words, if the chronograph mechanism was switched on for 3 hours, the lug 52 will not come to a stop until after 33 hours. As the needle 18 indicates a power reserve equal to 10 hours minus 3 hours, it will arrive at zero after 40 hours of operation of the main cylinder.

Si la mesure d'un temps chronométré débute alors que la réserve de marche du barillet principal est inférieure à 10 heures, l'ergot 52 fait aussi tourner la roue 48. Il est alors impératif d'éviter que les deux barillets additionnent leurs actions sur la commande de l'aiguille 18.If the measurement of a timed time begins while the power reserve of the main barrel is less than 10 hours, the lug 52 also turns the wheel 48. It is then imperative to prevent the two barrels add their actions on the control of the needle 18.

On notera qu'à cet effet, la roue 48 est également sollicitée par la rotation de la roue 42 entraînée par le deuxième barillet 31. Ainsi, du fait que les roues 48 et 50 sont entraînées à la même vitesse et moyennant un ébat d'engrenages égal à au moins une minute (rendu nécessaire par le fait que le barillet 31 avance par pas de une minute), l'ergot 52 de la roue restera dans la même position relative par rapport à l'extrémité de l'ouverture 49 de la roue 48. Grâce à ces dispositions, l'aiguille 18 est ainsi entraînée sans conflit entre les deux barillets, la même réserve de marche affichée correspondant à celle du barillet principal.Note that for this purpose, the wheel 48 is also urged by the rotation of the wheel 42 driven by the second cylinder 31. Thus, because the wheels 48 and 50 are driven at the same speed and with a frost gearing equal to at least one minute (made necessary by the fact that the barrel 31 advances in steps of one minute), the lug 52 of the wheel will remain in the same relative position relative to the end of the opening 49 of the wheel 48. With these provisions, the needle 18 is thus driven without conflict between the two barrels, the same power reserve displayed corresponding to that of the main barrel.

Le mécanisme décrit est intégré dans une montre munie d'un remontage manuel des ressorts de barillet. Il est évident qu'il peut, sans autre, être appliqué à une montre à remontage automatique.The described mechanism is integrated in a watch provided with manual winding of the barrel springs. It is obvious that it can, without further, be applied to a self-winding watch.

Ainsi est proposé un mécanisme d'affichage de la réserve de marche indiquant seulement le temps de marche nécessaire pour assurer la fonction chronographe, fixée à 10 heures, alors que la pièce possède, pour la fonction d'affichage du temps courant, une réserve de 40 heures.Thus is proposed a power reserve display mechanism indicating only the running time necessary to ensure the chronograph function, set at 10 o'clock, while the coin has, for the current time display function, a reserve of 40 hours.

En d'autres termes, l'aiguille indicatrice 18 est entraînée de manière dégressive, de 10 heures à 0 :

  • soit après 30 heures de marche de la pièce, tant que le chronographe n'est pas enclenché,
  • soit dès l'enclenchement du chronographe, lequel a besoin d'une réserve de 10 heures.
In other words, the indicator needle 18 is degressively driven from 10 hours to 0:
  • after 30 hours of walking, as long as the chronograph is not engaged,
  • either when the chronograph is switched on, which needs a reserve of 10 hours.

Claims (8)

  1. A running reserve indicator mechanism of a mechanical timepiece movement provided with a main barrel (23) for driving the finishing gear-train and at least a second barrel (31) for driving a gear-train assigned to an auxiliary function that must be performed during a determined period, characterized in that it comprises:
    - running reserve indicator means comprising a hand (18) and a dial (19) used for reading the position of the hand,
    - first and second gear-trains connecting respectively the main barrel and the second barrel to said indicator means,
    - said means and said gear-trains being arranged so that the indicated running reserve corresponds to the time remaining to perform said auxiliary function.
  2. The mechanism as claimed in claim 1, characterized in that said indicator means and said gear-trains are arranged so that the indicated running reserve is that of the barrel having the shortest reserve.
  3. The mechanism as claimed in claim 2, characterized in that said indicator means and said gear-trains are such that:
    - so long as the timepiece operates without the chronograph function, said hand (18) starts moving only after a running time corresponding to the difference between the running time of the main barrel (23) and that of the second barrel (31),
    - as soon as the chronograph function is engaged, the hand (18) starts moving and indicates the running reserve of the barrel having the shortest reserve.
  4. The mechanism as claimed in one of claims 2 and 3, characterized in that said indicator means and said gear-trains are such that:
    - so long as the rewinding of the timepiece has not reached a state corresponding to a running time equal to that of the second barrel (31), said dial (19) rotates but said hand (18) remains immobile,
    - as soon as the rewinding has reached said state, the dial (19) and the hand (18) rotate at the same time.
  5. The mechanism as claimed in one of claims 1 to 4, characterized in that said indicator means also comprise:
    - a shaft (39) to which the indicator hand (18) is attached and the dial (19) is mounted pivotingly,
    - a first wheel (40) also attached to this shaft and furnished with a circular opening (41) whose length corresponds to a running time substantially equal to the running time of the second barrel (31),
    - a second wheel (37) mounted pivotingly on the shaft (39), fixedly attached to the dial (19) and furnished with a lug (38) situated in said opening (41),
    - a fourth wheel (42) friction-mounted on the shaft (39), and
    - a first gearwheel (46) attached to the shaft (39).
  6. The mechanism as claimed in claim 5, characterized in that said first gear-train connects the tooth gear (26) of the main barrel (23) to said first gearwheel (46) and comprises:
    - a fifth wheel (48) fixedly attached in rotation to said gearwheel (46) and provided with a circular opening (49) whose length corresponds to the difference between the running time of the main barrel (23) and that of the second barrel (31), and
    - a sixth wheel (50) fixedly attached in rotation to said tooth gear (26) mounted free in rotation on the shaft (51) of the fifth wheel (48) and furnished with a lug (52) situated in its opening (49).
  7. The mechanism as claimed in claim 6, characterized in that said first gear-train also comprises, inserted between the sixth wheel (50) and the tooth gear (26) of the main barrel (23), a seventh wheel (55) friction-mounted and a dogtooth mobile (60).
  8. The mechanism as claimed in one of claims 5 to 7, characterized in that said second gear-train comprises:
    - a second gearwheel (34) attached to the shaft (30) of the second barrel (31),
    - a seventh wheel (35) engaging with this gearwheel (34) and whose gearwheel (36) engages with said second wheel (37),
    - a third gearwheel (45) mounted pivotingly on said shaft (30), and
    - an eighth wheel (44) engaging with this third gearwheel (45) and whose gearwheel (43) engages with said fourth wheel (42), said seventh wheel (35) being mounted pivotingly on the shaft of this gearwheel.
EP04738075A 2003-07-14 2004-07-08 Winding state indicator mechanism for a mechanical timepiece Expired - Lifetime EP1658532B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04738075A EP1658532B1 (en) 2003-07-14 2004-07-08 Winding state indicator mechanism for a mechanical timepiece

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03405533A EP1498789A1 (en) 2003-07-14 2003-07-14 Winding state indicator mechanism for a mechanical timepiece
PCT/CH2004/000434 WO2005006088A1 (en) 2003-07-14 2004-07-08 Running reserve indicator for a mechanical clockwork
EP04738075A EP1658532B1 (en) 2003-07-14 2004-07-08 Winding state indicator mechanism for a mechanical timepiece

Publications (2)

Publication Number Publication Date
EP1658532A1 EP1658532A1 (en) 2006-05-24
EP1658532B1 true EP1658532B1 (en) 2007-05-02

Family

ID=33462279

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Application Number Title Priority Date Filing Date
EP03405533A Withdrawn EP1498789A1 (en) 2003-07-14 2003-07-14 Winding state indicator mechanism for a mechanical timepiece
EP04738075A Expired - Lifetime EP1658532B1 (en) 2003-07-14 2004-07-08 Winding state indicator mechanism for a mechanical timepiece

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP03405533A Withdrawn EP1498789A1 (en) 2003-07-14 2003-07-14 Winding state indicator mechanism for a mechanical timepiece

Country Status (8)

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US (1) US7357568B2 (en)
EP (2) EP1498789A1 (en)
JP (1) JP4427542B2 (en)
CN (1) CN100549872C (en)
AT (1) ATE361486T1 (en)
DE (1) DE602004006280T2 (en)
HK (1) HK1090709A1 (en)
WO (1) WO2005006088A1 (en)

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Also Published As

Publication number Publication date
JP4427542B2 (en) 2010-03-10
ATE361486T1 (en) 2007-05-15
WO2005006088A1 (en) 2005-01-20
US20070041277A1 (en) 2007-02-22
JP2007506940A (en) 2007-03-22
US7357568B2 (en) 2008-04-15
EP1498789A1 (en) 2005-01-19
DE602004006280T2 (en) 2008-01-24
CN1823308A (en) 2006-08-23
CN100549872C (en) 2009-10-14
HK1090709A1 (en) 2006-12-29
EP1658532A1 (en) 2006-05-24
DE602004006280D1 (en) 2007-06-14

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