EP0918265B1 - Generator driving device for small instruments - Google Patents

Generator driving device for small instruments Download PDF

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Publication number
EP0918265B1
EP0918265B1 EP19970120561 EP97120561A EP0918265B1 EP 0918265 B1 EP0918265 B1 EP 0918265B1 EP 19970120561 EP19970120561 EP 19970120561 EP 97120561 A EP97120561 A EP 97120561A EP 0918265 B1 EP0918265 B1 EP 0918265B1
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EP
European Patent Office
Prior art keywords
pinion
wheel
sliding wheel
chain
generator
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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
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EP19970120561
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German (de)
French (fr)
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EP0918265A1 (en
Inventor
Laurent Kaelin
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ETA Manufacture Horlogere Suisse SA
Ebauchesfabrik ETA AG
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ETA Manufacture Horlogere Suisse SA
Ebauchesfabrik ETA AG
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Priority to EP19970120561 priority Critical patent/EP0918265B1/en
Priority to DE1997615427 priority patent/DE69715427T2/en
Publication of EP0918265A1 publication Critical patent/EP0918265A1/en
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Publication of EP0918265B1 publication Critical patent/EP0918265B1/en
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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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch

Definitions

  • the invention relates to a device of an energy generator to operate a small volume instrument, this device comprising a gear train operating said generator from of an oscillating mass actuated by gravity, this train comprising a plurality of mobiles arranged in a chain.
  • the invention relates to such device arranged in a wristwatch to wind up a mechanical movement or to power a circuit electronic.
  • the invention may relate to a electronic unit associated with reception means and / or emission of electromagnetic signals.
  • the oscillating mass rises, via a train of gears, a barrel spring.
  • this spring from a slippery flange.
  • the outer end of the spring is not attached to the barrel, but fixed to a blade which supports against the wall of the barrel drum occupying a little more than one round. This blade is called a sliding strap and allows the spring to arm normally and then slide then against the wall of the drum.
  • the friction is calculated so that the wheel slips on the tree when a shock is applied to the mass or, if we prefer, when the torque applied to the rotor exceeds one admissible value. This avoids any breakage of the mechanism. Note however that in manufacturing in large series, friction of constant value is difficult to insure and therefore requires adjustments which take time.
  • the present invention is remarkable in that the chain has a mobile player arranged to disassociate from at least one of the other mobiles and thus interrupt the said chain when the oscillating mass delivers mechanical power exceeding substantially those provided in normal use of said instrument.
  • the generator driving device energy to operate a small volume instrument is mounted in plan in Figure 1 and in section in FIG. 2.
  • This device comprises a train of gears comprising a plurality of mobiles 18, 4, 6 and 19 arranged in chain 3.
  • This train operates the energy generator 1 (a single constructive element of a particular execution is shown in the drawing) from an oscillating mass 2 actuated by gravity and constituting the energy source, the rotational movement which results being illustrated by the double arrow G.
  • the device equips a small volume instrument which can be, for example, a wristwatch.
  • the movements of the arm that wears the watch gives to ground 2 a back and forth movement which, within mechanical watches, wind the barrel of this watch and, in electronic watches, activates a generator supplying voltage to an accumulator or very large capacitor, stored energy in this accumulator or this capacitor supplying its tower of electronic circuits (quartz, dividers, etc.) ensuring the smooth running of the watch.
  • the energy generator is a generator represented by its rotor 20, this rotor forming with a pinion 21 which is coaxial to it, a mobile 19.
  • the chain 3 comprises a mobile walkman 4 arranged to disassociate from at least one of the others mobile (in the present embodiment, mobile 18), and thus interrupt the chain 3, when the oscillating mass 2 (part, with the wheel 15, of the mobile 18) delivers mechanical power significantly exceeding those supplied in normal use of the said instrument.
  • this instrument is a wristwatch
  • normal use would be, for example, the swinging of the wearer's arm or any other usual movement of this arm, while the use abnormal would be, for example, the fall of the watch to the ground or a violent movement of the arm hitting an object.
  • FIGS. 1 and 2 show that a wheel 5 drives the wandering mobile 4 which drives in turn an intermediate mobile 6, the latter being in taken with the generator 1.
  • the chain 3 thus comprises four mobiles 18, 4, 6 and 19 meshing one after the other others.
  • the portable mobile 4 comprises a pinion 7 engaged with the wheel 5 integral with the oscillating mass 2 and a wheel 8 engaged with a pinion 9 forming part of the intermediate mobile 6, this the latter further comprising a wheel 22 engaged with the pinion 21 of the mobile 19.
  • the opposing forces represented by the arrows A and B, of two blades 11 and 12 of a spring 13 of positioning.
  • the portable mobile 4 follows a trajectory arranged so that the teeth 14 of its pinion 7 are driven out of the path of the teeth 15 of the wheel 5 secured to mass 2.
  • generator 1 can be considered as blocked, as well as the intermediate mobiles 6 and player 4 in engagement with him.
  • the stress on the teeth 15 of the wheel 5 secured to the mass 2 increases strongly due to the reported inertia of generator 1. If therefore wheel 5 was directly in taken with the pinion 9 of the intermediate mobile 6, the teeth 15 of wheel 5 would break. But such is not the case thanks to the presence of the mobile walkman 4 which is immediately ejected from the chain 3, the wheel 5 can then rotate freely for the duration of the shock.
  • the situation of the portable mobile 4 shown in FIG. 4 corresponds to a shock directed in the direction of arrow F.
  • the blades 11 and 12 of the spring 13 are respectively tense and relaxed and thus deviate from the position balance shown in Figure 3.
  • the shock disappears, blade 11 pushes back, along arrow A, the mobile in chain 3.
  • the elastic constant of arms 11 and 12 of spring 13 will chosen so that the ejection of the portable mobile 4 intervenes as soon as the mechanical power supplied by the oscillating mass 2 exceeds those supplied in use normal, therefore exceeds a certain limit.

Description

L'invention est relative à un dispositif d'entraínement d'un générateur d'énergie pour actionner un instrument de petit volume, ce dispositif comprenant un train d'engrenages actionnant ledit générateur à partir d'une masse oscillante actionnée par gravité, ce train comportant une pluralité de mobiles disposés en chaíne.The invention relates to a device of an energy generator to operate a small volume instrument, this device comprising a gear train operating said generator from of an oscillating mass actuated by gravity, this train comprising a plurality of mobiles arranged in a chain.

En particulier, l'invention concerne un tel dispositif agencé dans une montre-bracelet pour remonter un mouvement mécanique ou pour alimenter un circuit électronique. De même, l'invention peut concerner une unité électronique associée à des moyens de réception et/ou d'émission de signaux électromagnétiques.In particular, the invention relates to such device arranged in a wristwatch to wind up a mechanical movement or to power a circuit electronic. Likewise, the invention may relate to a electronic unit associated with reception means and / or emission of electromagnetic signals.

On connaít des dispositifs d'entraínement répondant à la définition générique donnée ci-dessus, ces dispositifs étant montés soit dans des montres à remontage automatique, soit dans des montres électroniques.There are known training devices responding to the generic definition given above, these devices being fitted either in winding watches automatic, either in electronic watches.

En ce qui concerne les montres à remontage automatique, la masse oscillante remonte, via un train d'engrenages, un ressort de barillet. Pour éviter la surtension du ressort en fin d'armage, on équipe généralement ce ressort d'une bride glissante. Pour ce faire, l'extrémité extérieure du ressort n'est pas accrochée au barillet, mais fixée à une lame qui appuie contre la paroi du tambour de barillet en occupant un peu plus d'un tour. Cette lame est appelée bride glissante et permet au ressort de s'armer normalement, puis de glisser ensuite contre la paroi du tambour. Cependant, si la bride glissante, pour une raison ou pour une autre, remplit mal ou plus du tout la fonction pour laquelle elle est prévue, il peut y avoir, lors de chocs exercés sur la montre, rupture soit du ressort, soit des dents d'un engrenage faisant partie du train remontant le ressort, l'engrenage le plus sollicité étant la roue solidaire de la masse oscillante. Ce danger peut être écarté en partie si l'on supporte, par exemple, la masse oscillante par un bras élastique s'étendant en zigzag comme cela est montré dans le document CH-A-281 490. Ce bras particulier a tendance à amortir les chocs radiaux que peut subir la masse. Cependant, dans ce document, il n'est nullement question d'un mobile baladeur qui viendrait interrompre, en cas de chocs, la chaíne d'engrenage alimentant le ressort du barillet, comme cela est prévu dans la présente invention.Regarding winding watches automatic, the oscillating mass rises, via a train of gears, a barrel spring. To avoid the overvoltage of the spring at the end of winding, we equip usually this spring from a slippery flange. For this do, the outer end of the spring is not attached to the barrel, but fixed to a blade which supports against the wall of the barrel drum occupying a little more than one round. This blade is called a sliding strap and allows the spring to arm normally and then slide then against the wall of the drum. However, if the flange slippery, for one reason or another, fills poorly or not at all the function for which it is intended, there may be, during shocks exerted on the watch, rupture of either the spring or the teeth of a gear being part of the train winding up the spring, the gear the most requested being the wheel attached to the mass oscillating. This danger can be partially avoided if one supports, for example, the oscillating mass by an arm elastic stretching in a zigzag as shown in CH-A-281 490. This particular arm tends to absorb the radial shocks that the mass can undergo. However, in this document, there is no question a portable mobile which would interrupt, in the event of shocks, the gear chain supplying the spring of the barrel, as provided in the present invention.

En ce qui concerne les montres électroniques, on peut citer le document EP-A-0 326 312. Ce document décrit un dispositif d'entraínement d'une génératrice alimentant en tension électrique un condensateur à très haute capacité. Pour cela, le dispositif comporte une masse oscillante couplée mécaniquement à ladite génératrice pour entraíner son rotor. Pour préserver le mécanisme de tout effort exagéré sur les dents des rouages en cas de choc et éviter ainsi la casse de ces dents, il est prévu une transmission à friction entre la masse oscillante et le rotor de la génératrice. Dans la construction proposée, un mobile intermédiaire est interposé entre la masse oscillante et le rotor. La masse transmet son mouvement à un pignon du mobile intermédiaire, ce dernier comportant une roue ajustée à friction sur l'arbre du mobile, cette roue étant en prise avec un pignon du rotor de la génératrice. La friction est calculée de façon à ce que la roue patine sur l'arbre quand un choc est appliqué à la masse ou, si l'on préfère, quand le couple appliqué au rotor dépasse une valeur admissible. On évite ainsi toute casse du mécanisme. On remarquera cependant qu'en fabrication en grandes séries, une friction de valeur constante est difficile à assurer et nécessite donc des réglages qui prennent du temps.Regarding electronic watches, we can cite document EP-A-0 326 312. This document describes a generator driving device supplying electric voltage a very high capacity capacitor. For this, the device comprises an oscillating mass mechanically coupled to said generator to drive its rotor. To preserve the mechanism from any effort exaggerated on the teeth of the cogs in case of shock and avoid thus the breakage of these teeth, it is expected a transmission friction between the oscillating mass and the rotor of the generator. In the proposed construction, a mobile intermediate is interposed between the oscillating mass and the rotor. The mass transmits its movement to a pinion of the intermediate mobile, the latter comprising a wheel frictionally adjusted on the shaft of the mobile, this wheel being engaging a pinion on the generator rotor. The friction is calculated so that the wheel slips on the tree when a shock is applied to the mass or, if we prefer, when the torque applied to the rotor exceeds one admissible value. This avoids any breakage of the mechanism. Note however that in manufacturing in large series, friction of constant value is difficult to insure and therefore requires adjustments which take time.

Pour pallier les insuffisances ou inconvénients qui ressortent des documents cités, la présente invention est remarquable en ce sens que la chaíne comporte un mobile baladeur arrangé pour se désolidariser d'au moins l'un des autres mobiles et interrompre ainsi ladite chaíne quand la masse oscillante délivre une puissance mécanique dépassant sensiblement celles fournies en usage normal dudit instrument.To overcome the shortcomings or disadvantages which emerge from the cited documents, the present invention is remarkable in that the chain has a mobile player arranged to disassociate from at least one of the other mobiles and thus interrupt the said chain when the oscillating mass delivers mechanical power exceeding substantially those provided in normal use of said instrument.

L'invention sera expliquée maintenant plus en détail à l'aide de la description suivante d'un mode de réalisation et des dessins qui l'illustrent à titre d'exemple et dans lesquels :

  • la figure 1 est une vue en plan du dispositif selon l'invention montrant la masse oscillante agissant sur le générateur d'énergie via le train d'engrenage,
  • la figure 2 est une coupe pratiquée dans la figure 1,
  • la figure 3 est une vue en plan à échelle agrandie du train d'engrenages exécuté selon l'invention quand l'instrument fonctionne normalement, et
  • la figure 4 est une vue en plan à échelle agrandie du train d'engrenages exécuté selon l'invention quand l'instrument reçoit un choc.
The invention will now be explained in more detail with the aid of the following description of an embodiment and of the drawings which illustrate it by way of example and in which:
  • FIG. 1 is a plan view of the device according to the invention showing the oscillating mass acting on the energy generator via the gear train,
  • FIG. 2 is a section made in FIG. 1,
  • FIG. 3 is a plan view on an enlarged scale of the gear train executed according to the invention when the instrument is operating normally, and
  • Figure 4 is a plan view on an enlarged scale of the gear train executed according to the invention when the instrument receives a shock.

Le dispositif d'entraínement d'un générateur d'énergie pour actionner un instrument de petit volume selon l'invention est montée en plan sur la figure 1 et en coupe sur la figure 2. Ce dispositif comprend un train d'engrenages comportant une pluralité de mobiles 18, 4, 6 et 19 disposés en chaíne 3. Ce train actionne le générateur d'énergie 1 (un seul élément constructif d'une exécution particulière est représenté au dessin) à partir d'une masse oscillante 2 actionnée par gravité et constituant la source d'énergie, le mouvement de rotation qui en résulte étant illustré par la double flèche G. Le dispositif équipe un instrument de petit volume qui peut être, par exemple, une montre-bracelet. Comme cela est connu, les mouvements du bras qui porte la montre confère à la masse 2 un mouvement de va-et-vient qui, dans les montres mécaniques, remonte le barillet de cette montre et, dans les montres électroniques, actionne une génératrice alimentant en tension un accumulateur ou un condensateur de très grande capacité, l'énergie stockée dans cet accumulateur ou ce condensateur alimentant à son tour des circuits électroniques (quartz, diviseurs, etc.) assurant la bonne marche de la montre. Dans le cas des figures choisies ici, le générateur d'énergie est une génératrice représentée par son rotor 20, ce rotor formant avec un pignon 21 qui lui est coaxial, un mobile 19.The generator driving device energy to operate a small volume instrument according to the invention is mounted in plan in Figure 1 and in section in FIG. 2. This device comprises a train of gears comprising a plurality of mobiles 18, 4, 6 and 19 arranged in chain 3. This train operates the energy generator 1 (a single constructive element of a particular execution is shown in the drawing) from an oscillating mass 2 actuated by gravity and constituting the energy source, the rotational movement which results being illustrated by the double arrow G. The device equips a small volume instrument which can be, for example, a wristwatch. As is known, the movements of the arm that wears the watch gives to ground 2 a back and forth movement which, within mechanical watches, wind the barrel of this watch and, in electronic watches, activates a generator supplying voltage to an accumulator or very large capacitor, stored energy in this accumulator or this capacitor supplying its tower of electronic circuits (quartz, dividers, etc.) ensuring the smooth running of the watch. In the case of figures chosen here, the energy generator is a generator represented by its rotor 20, this rotor forming with a pinion 21 which is coaxial to it, a mobile 19.

Selon la présente invention et comme on le voit sur les figures, la chaíne 3 comporte un mobile baladeur 4 arrangé pour se désolidariser d'au moins l'un des autres mobiles (dans l'exécution présente, du mobile 18), et interrompre ainsi la chaíne 3, quand la masse oscillante 2 (faisant partie, avec la roue 15, du mobile 18) délivre une puissance mécanique dépassant sensiblement celles fournies en usage normal dudit instrument. Si cet instrument est une montre-bracelet, l'usage normal serait, par exemple, les balancements du bras du porteur ou tout autre mouvement habituel de ce bras, alors que l'usage anormal serait, par exemple, la chute de la montre au sol ou encore un mouvement violent du bras frappant un objet.According to the present invention and as seen on the figures, the chain 3 comprises a mobile walkman 4 arranged to disassociate from at least one of the others mobile (in the present embodiment, mobile 18), and thus interrupt the chain 3, when the oscillating mass 2 (part, with the wheel 15, of the mobile 18) delivers mechanical power significantly exceeding those supplied in normal use of the said instrument. If this instrument is a wristwatch, normal use would be, for example, the swinging of the wearer's arm or any other usual movement of this arm, while the use abnormal would be, for example, the fall of the watch to the ground or a violent movement of the arm hitting an object.

On va décrire maintenant un mode de réalisation préféré de l'invention, ce mode étant illustré par les figures. En particulier, les figures 1 et 2 montrent qu'une roue 5 entraíne le mobile baladeur 4 qui entraíne à son tour un mobile intermédiaire 6, ce dernier étant en prise avec le générateur 1. La chaíne 3 comporte ainsi quatre mobiles 18, 4, 6 et 19 engrenant les uns à la suite des autres. On peut envisager cependant une chaíne à trois mobiles, le mobile intermédiaire étant alors rendu baladeur. Ce dernier mode de réalisation soulève cependant des difficultés de réalisation.We will now describe an embodiment preferred of the invention, this mode being illustrated by the FIGS. In particular, Figures 1 and 2 show that a wheel 5 drives the wandering mobile 4 which drives in turn an intermediate mobile 6, the latter being in taken with the generator 1. The chain 3 thus comprises four mobiles 18, 4, 6 and 19 meshing one after the other others. We can however consider a chain of three mobile, the intermediate mobile then being returned music player. This latter embodiment, however, raises difficulties of realization.

Si l'on se réfère maintenant à la chaíne 3 représentée aux figures, on voit que le mobile baladeur 4 comporte un pignon 7 en prise avec la roue 5 solidaire de la masse oscillante 2 et une roue 8 en prise avec un pignon 9 faisant partie du mobile intermédiaire 6, ce dernier comprenant encore une roue 22 en prise avec le pignon 21 du mobile 19. Sur l'arbre 10 du mobile baladeur 4 s'exercent les forces antagonistes, représentées par les flèches A et B, de deux lames 11 et 12 d'un ressort 13 de positionnement. Quand la masse 2 délivre une puissance mécanique issue d'un usage normal de l'instrument, le mobile baladeur 4 est maintenu dans la chaíne 3, comme cela est visible aux figures 1 et 3. Par contre, quand la masse 2 délivre une puissance mécanique dépassant celles fournies en usage normal, le mobile baladeur 4 suit une trajectoire arrangée pour que les dents 14 de son pignon 7 soient chassées hors de la trajectoire des dents 15 de la roue 5 solidaire de la masse 2. En effet, quand l'instrument est soumis à un choc violent (chute au sol par exemple) le générateur 1 peut être considéré comme bloqué, de même que les mobiles intermédiaires 6 et baladeur 4 en prise avec lui. En d'autres termes, la contrainte sur les dents 15 de la roue 5 solidaire de la masse 2 augmente fortement à cause de l'inertie rapportée du générateur 1. Si donc la roue 5 était directement en prise avec le pignon 9 du mobile intermédiaire 6, les dents 15 de la roue 5 casseraient. Mais tel n'est pas le cas grâce à la présence du mobile baladeur 4 qui est immédiatement éjecté de la chaíne 3, la roue 5 pouvant alors tourner librement pendant la durée du choc.If we now refer to chain 3 shown in the figures, it can be seen that the portable mobile 4 comprises a pinion 7 engaged with the wheel 5 integral with the oscillating mass 2 and a wheel 8 engaged with a pinion 9 forming part of the intermediate mobile 6, this the latter further comprising a wheel 22 engaged with the pinion 21 of the mobile 19. On the shaft 10 of the portable mobile 4 the opposing forces, represented by the arrows A and B, of two blades 11 and 12 of a spring 13 of positioning. When mass 2 delivers a power mechanical after normal use of the instrument, the mobile walkman 4 is held in the chain 3, as this is visible in Figures 1 and 3. However, when the mass 2 delivers mechanical power exceeding those supplied in normal use, the portable mobile 4 follows a trajectory arranged so that the teeth 14 of its pinion 7 are driven out of the path of the teeth 15 of the wheel 5 secured to mass 2. Indeed, when the instrument is subjected to a violent shock (fall to the ground for example) generator 1 can be considered as blocked, as well as the intermediate mobiles 6 and player 4 in engagement with him. In other words, the stress on the teeth 15 of the wheel 5 secured to the mass 2 increases strongly due to the reported inertia of generator 1. If therefore wheel 5 was directly in taken with the pinion 9 of the intermediate mobile 6, the teeth 15 of wheel 5 would break. But such is not the case thanks to the presence of the mobile walkman 4 which is immediately ejected from the chain 3, the wheel 5 can then rotate freely for the duration of the shock.

Dans une montre électronique, il est prévu en général un rapport d'engrenages d'environ 100 entre la masse oscillante et le rotor de la génératrice, ceci pour permettre à ladite génératrice de fournir une force électromotrice suffisante aux bornes de l'enroulement de son stator. Cela explique mieux encore que, lors de chocs, le rotor de la génératrice peut être considéré comme bloqué et que si rien n'est entrepris, les dents d'un des mobiles de la chaíne cinématique puissent casser. Dans une montre à remontage mécanique par contre, ce rapport d'engrenages est nettement plus faible. Cependant, comme on l'a dit plus haut, le ressort de barillet risque d'être bloqué si une défectuosité se présente au niveau de la bride glissante. A ce moment, l'utilisation du dispositif selon l'invention se justifie entièrement.In an electronic watch, it is generally provided a gear ratio of about 100 between mass oscillating and the generator rotor, this for allow said generator to provide force sufficient electromotive at the terminals of the winding its stator. This explains even better that, during shocks, the generator rotor can be considered blocked and that if nothing is done, the teeth of one of of the kinematic chain can break. In mechanical watch on the other hand, this report gear is significantly lower. However, as as we said above, the barrel spring may be blocked if a defect occurs in the sliding strap. At this time, the use of the device according to the invention is entirely justified.

La situation du mobile baladeur 4 montré en figure 4 correspond à un choc dirigé dans le sens de la flèche F. Les lames 11 et 12 du ressort 13 sont respectivement tendues et détendues et s'écartent ainsi de la position d'équilibre montrée en figure 3. Quand le choc disparaít, la lame 11 repousse, selon la flèche A, le mobile baladeur dans la chaíne 3. On comprendra que si le choc avait eu lieu dans l'autre sens, ce serait la lame 12 qui serait tendue et la lame 11 détendue. On notera aussi que la constante élastique des bras 11 et 12 du ressort 13 sera choisie pour que l'éjection du mobile baladeur 4 intervienne dès que la puissance mécanique fournie par la masse oscillante 2 dépasse celles fournies en usage normal, donc dépasse une certaine limite. On cite volontiers une accélération de masse de 500 g comme valeur limite.The situation of the portable mobile 4 shown in FIG. 4 corresponds to a shock directed in the direction of arrow F. The blades 11 and 12 of the spring 13 are respectively tense and relaxed and thus deviate from the position balance shown in Figure 3. When the shock disappears, blade 11 pushes back, along arrow A, the mobile in chain 3. We will understand that if the shock had place in the other direction, it would be blade 12 which would stretched and the blade 11 relaxed. Note also that the elastic constant of arms 11 and 12 of spring 13 will chosen so that the ejection of the portable mobile 4 intervenes as soon as the mechanical power supplied by the oscillating mass 2 exceeds those supplied in use normal, therefore exceeds a certain limit. We cite willingly a mass acceleration of 500 g as a value limit.

On peut envisager différentes trajectoires à donner au mobile baladeur 4 pour lui permettre de s'extraire de la chaíne 3 au moment du choc. Comme on le voit sur les figures 1, 3 et 4, le mobile baladeur 4 peut s'échapper de la chaíne 3 s'il est monté en satellite autour du mobile intermédiaire 6. Pour ce faire l'arbre 10 du baladeur 4 est guidé dans une ouverture oblongue 16 arrangée en forme de banane et pratiquée dans un pont fixe 17. Ainsi la roue du baladeur 4 reste-t-elle en prise avec le pignon 9 de la roue intermédiaire 6 quand les dents 14 du pignon 7 dudit baladeur 4 s'échappent des dents 15 de la roue 5 de la masse oscillante 2 lors d'un choc.We can consider different trajectories to give mobile player 4 to allow it to get out of the chain 3 at the time of the shock. As seen on Figures 1, 3 and 4, the portable mobile 4 can escape from chain 3 if it is mounted as a satellite around the mobile intermediate 6. To do this the shaft 10 of the player 4 is guided in an oblong opening 16 arranged in shape of banana and practiced in a fixed bridge 17. Thus the wheel of the player 4 remains in engagement with the pinion 9 of the intermediate wheel 6 when the teeth 14 of the pinion 7 of said player 4 escapes from the teeth 15 of the wheel 5 of the oscillating mass 2 during an impact.

Au lieu de guider l'arbre 10 du baladeur 4 dans une ouverture en forme de banane, on pourrait emmancher à rotation le baladeur 4 sur un tenon, ce tenon étant disposé sur un pont monté pivotant sur l'axe autour duquel tourne le mobile intermédiaire 6. On obtiendrait ainsi pour le baladeur, bien que ce mode d'exécution ne soit pas représenté au dessin, une trajectoire en satellite autour du mobile intermédiaire.Instead of guiding the shaft 10 of the walkman 4 in a banana-shaped opening, we could press rotation of the walkman 4 on a tenon, this tenon being arranged on a bridge mounted pivoting on the axis around which turns the intermediate mobile 6. We would thus obtain for the player, although this mode of execution is not shown in the drawing, a satellite trajectory around of the intermediate mobile.

La description ci-dessus concerne surtout l'actionnement d'une génératrice d'électricité mue par une masse oscillante. Dans le cas où cette masse actionne un ressort de barillet, il est évident que le mobile baladeur peut être monté dans la chaíne cinématique disposée entre la masse et le ressort de barillet.The above description mainly concerns actuation of an electric generator powered by a oscillating mass. In the event that this mass activates a barrel spring, it is obvious that the portable mobile can be mounted in the kinematic chain arranged between the mass and the barrel spring.

Claims (7)

  1. Driving device for a power generator (1) for powering an instrument of small volume, said device including a gear train driving said generator from an oscillating weight (2) moved by gravity, said train including a plurality of wheels and pinions (18, 4, 6, 19) arranged in a chain (3), characterized in that the chain includes a sliding wheel and pinion (4) arranged to disengage from at least one of the other wheel and pinions (18) and thus to interrupt said chain (3) when the oscillating weight (2) is subjected to an acceleration substantially exceeding that occurring during normal use of said instrument.
  2. Device according to claim 1, characterized in that the power generator (1) is a spring mounted in a barrel.
  3. Device according to claim 1, characterized in that the power generator (1) is generator generating an electric voltage.
  4. Device according to claim 1, characterized in that the sliding wheel and pinion (4) is driven by a wheel (5) attached to the oscillating weight (2), said sliding wheel and pinion in turn driving an intermediate wheel and pinion (6) meshed with the power generator (1).
  5. Device according to claim 4, characterized in that the sliding wheel and pinion (4) includes a pinion (7) meshed with the wheel (5) attached to the oscillating weight (2) and a wheel (8) meshed with a pinion (9) forming part of the intermediate wheel and pinion (6), in that opposing forces (A, B) of two strips (11, 12) of a positioning spring (13) are exerted on the shaft (10) of the sliding wheel and pinion (4) to keep said sliding wheel and pinion in the chain (3) when the oscillating weight (2) is subjected to a normal acceleration; and in that the trajectory of said sliding wheel and pinion (4) is determined so that the teeth (14) of its pinion (7) are driven out of the trajectory of the teeth (15) of the wheel (5) attached to the oscillating weight (2) when said weight is subjected to an acceleration substantially exceeding that occurring during normal use of the instrument.
  6. Device according to claim 5, characterized in that the sliding wheel and pinion (4) rotates as a satellite about the intermediate wheel and pinion (6), the shaft (10) of said sliding wheel and pinion (4) being guided in a banana-shaped oblong opening (16) made in a fixed bridge (17).
  7. Device according to claim 5, characterized in that the sliding wheel and pinion (4) rotates as a satellite about intermediate wheel and pinion (6), said sliding wheel and pinion (4) being rotatively mounted onto a stud arranged on a bridge pivotably mounted on the shaft about which the intermediate wheel and pinion (6) rotates.
EP19970120561 1997-11-24 1997-11-24 Generator driving device for small instruments Expired - Lifetime EP0918265B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19970120561 EP0918265B1 (en) 1997-11-24 1997-11-24 Generator driving device for small instruments
DE1997615427 DE69715427T2 (en) 1997-11-24 1997-11-24 Generator drive device for small instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19970120561 EP0918265B1 (en) 1997-11-24 1997-11-24 Generator driving device for small instruments

Publications (2)

Publication Number Publication Date
EP0918265A1 EP0918265A1 (en) 1999-05-26
EP0918265B1 true EP0918265B1 (en) 2002-09-11

Family

ID=8227671

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970120561 Expired - Lifetime EP0918265B1 (en) 1997-11-24 1997-11-24 Generator driving device for small instruments

Country Status (2)

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EP (1) EP0918265B1 (en)
DE (1) DE69715427T2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69940344D1 (en) 1999-09-17 2009-03-12 Eta Sa Mft Horlogere Suisse Shockproof device for a generator powered by a flywheel
DE102014102257A1 (en) 2014-02-21 2015-08-27 Wolfgang Waldleben Apparatus and method for converting kinetic energy into electrical energy by means of vibration generators

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH337128A (en) * 1955-09-13 1959-03-15 Chs Tissot & Fils S A Mechanism intended to prevent overvoltage of the mainspring of a self-winding watch
CH333992A (en) * 1956-10-31 1958-11-15 Schild S A Fabrique D Ebauches Watch with motor spring armed by movements in one direction of a moving mass
FR1242818A (en) * 1957-10-22 1960-10-07 Watch system with rotating mass winding and various improvements
KR900700935A (en) * 1988-01-25 1990-08-17 야마무라 가쯔미 Electronic wrist watch with power generation device

Also Published As

Publication number Publication date
EP0918265A1 (en) 1999-05-26
DE69715427D1 (en) 2002-10-17
DE69715427T2 (en) 2003-05-22

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