EP2869137B1 - Power reserve indicator mechanism - Google Patents

Power reserve indicator mechanism Download PDF

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Publication number
EP2869137B1
EP2869137B1 EP13191468.1A EP13191468A EP2869137B1 EP 2869137 B1 EP2869137 B1 EP 2869137B1 EP 13191468 A EP13191468 A EP 13191468A EP 2869137 B1 EP2869137 B1 EP 2869137B1
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EP
European Patent Office
Prior art keywords
cam
barrel
clockwork movement
power reserve
driving mobile
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Application number
EP13191468.1A
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German (de)
French (fr)
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EP2869137A1 (en
Inventor
David Candaux
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Chronometrie Ferdinand Berthoud
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Chronometrie Ferdinand Berthoud
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.)
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Publication date
Application filed by Chronometrie Ferdinand Berthoud filed Critical Chronometrie Ferdinand Berthoud
Priority to EP13191468.1A priority Critical patent/EP2869137B1/en
Priority to CN201480056918.6A priority patent/CN105637431B/en
Priority to PCT/EP2014/073726 priority patent/WO2015063336A2/en
Publication of EP2869137A1 publication Critical patent/EP2869137A1/en
Priority to HK16107644.7A priority patent/HK1219786A1/en
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Publication of EP2869137B1 publication Critical patent/EP2869137B1/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
    • 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

Definitions

  • the present invention relates to the field of watchmaking. It relates, more particularly, to a mechanism for indicating the power reserve of a timepiece.
  • the documents EP 1 333 341 , CH 95250 and CH 330 559 disclose power reserve indicator mechanisms each using a cam screwed onto a threaded axis.
  • a probe is in contact with the surface of the cam, and the probe is in kinematic connection with a power reserve indicator.
  • the threaded axis or the cam is in kinematic connection with the shaft of a barrel, while the cam or the threaded axis respectively is in kinematic connection with the drum of the barrel. Consequently, during reassembly of the barrel, the cam is moved along the threaded axis in a first direction by means of the interaction of the respective threads of the axis and of the cam.
  • the cam When disarming the barrel, the cam is moved along the threaded axis in a second direction opposite to the first direction.
  • the feeler follows the surface of the cam during said movements, and transmits these movements to the power reserve indicator, which is conventionally a needle, a disc or the like.
  • Such power reserve indicator mechanisms are suitable for the most common barrels nowadays, that is to say barrels wound up by their shaft, which actuate the clockwork movement by a toothing arranged at the periphery of their drum. .
  • the barrel shaft and the drum each rotate in opposite directions of rotation.
  • the object of the present invention is therefore to at least partially alleviate the limitations of the prior art set out above.
  • a power reserve indicator mechanism which is suitable for barrels associated with a rocket mechanism.
  • the threaded axis is fixedly mounted to a frame element of the timepiece, which results in significant mechanical stability, the mechanism can easily be configured in a “flying” manner, because the threaded spindle can be supported either exclusively at one end only, or firmly at one end and slightly at the other end.
  • At least one drive means comprises at least one stud integral with the driving mobile.
  • Said at least one stud is arranged substantially parallel to the threaded axis and passes through a corresponding opening made in said cam, which drives the cam in rotation simply and reliably, and also serves for its guidance.
  • the cam is of frustoconical shape.
  • a shape is simple to manufacture.
  • the driving mobile is mounted to rotate freely around said threaded axis. Consequently, a simple construction is obtained.
  • the probe comprises a roller in contact with said inclined surface of said cam and mounted freely in rotation on a rocker of the probe, the roller preferably being in ruby.
  • the friction between the probe and the cam is thus minimized, consequently reducing the wear of these parts.
  • the plane of said roller is arranged perpendicular to a tangent of said outer surface of said cam.
  • said toothed mobile is a barrel drum and / or said toothed mobile engages directly with said driving mobile.
  • the invention relates to a timepiece comprising a timepiece movement, preferably a wristwatch, as defined above.
  • the Figures 1 to 3 illustrate a power reserve indicator mechanism 1 according to the invention.
  • the mechanism comprises a threaded axis 2 intended to be secured to an element of the frame (not shown) of a timepiece movement, for example by means of a screw 8.
  • the threaded axis 2 is by therefore fixed, and cannot be rotated.
  • the thread of the threaded axis 2 has not been shown in the drawings. If necessary, the end of the threaded axis 2 remote from the frame element can be supported by a bearing 9 located in an additional bridge (not shown).
  • a cam 3 is engaged on the threaded axis 2 and comprises a thread not shown, arranged to cooperate by screwing with the threaded axis 2 so that a rotation of the cam 3 causes its displacement along the threaded axis .
  • the cam 3 has an outer surface 7 inclined relative to said axis.
  • the cam 3 has been illustrated as having a frustoconical shape, other shapes are also possible, for example a shape having an outer surface 7 which is convex or concave.
  • a movable driver 10 of said cam 3 is mounted to rotate freely about the threaded axis 2 on a shoulder 11 devoid of threads, optionally by means of an intermediate core 12 in the form of an annular ring, preferably in ruby.
  • the driving mobile 10 comprises means for driving the cam 3 in rotation.
  • these driving means consist of two pins 4 fixed integrally on the core of the driving mobile 10 and extending substantially perpendicularly in the plane of the latter, and substantially parallel to the threaded axis 2. These tenons 4 pass through corresponding openings 13 made in the cam 3, which can move along the tenons, the tenons 4 and the openings 13 being dimensioned so that the cam 3 is guided by the pins 4.
  • other forms of means for driving the cam 3 in rotation are possible, and the number of these driving means can be chosen according to the wish of the watchmaker.
  • pins 4 it is also conceivable to replace the pins 4 by a geometric shape such as a star, polygon or the like, which comprises the hub of the movable carrier 10, and which also acts as a drive means, in the same way than the pins 4.
  • This geometric shape interacts with a correspondingly shaped cavity in the base of the cam 3, which has effect that the cam drive means 3 are hidden and effectively invisible from the bridge side (seen from the top of the cone).
  • the movable carrier 10 is adapted to be driven itself by the rotation in both directions of a rotating element of the barrel, for example its drum or its axis.
  • a rotating element of the barrel for example its drum or its axis.
  • the movable carrier 10 is provided with an external toothing 14, which is intended to be driven directly or indirectly by a toothing usually located projecting from the periphery of the barrel drum.
  • the mechanism 1 further comprises a feeler 5 pivoted in an element of the frame of the clockwork movement (not shown), one end 17 of the feeler being kept in contact with the outer surface 7 of the cam 3 by a return means (not illustrated).
  • the end 17 of the probe 5 follows the external surface 7 during the displacement of the cam 3 along the threaded axis 2.
  • the end 17 of the probe 5 is provided at its end with a roller 6 mounted free in rotation on the probe, and serving as a cam follower.
  • the roller 6 may be in ruby or be provided with an appropriate coating.
  • the probe 5 is associated with a rack 15 in kinematic connection with a pinion 16 associated with a power reserve indicator (not shown) such as a needle, a disc, or the like.
  • a power reserve indicator such as a needle, a disc, or the like.
  • the rack 15 can be replaced by a rake.
  • the type of connection between the rack 15 and the pinion 16 is within the reach of those skilled in the art and does not need to be described in detail.
  • cam 3 is located close to the driving mobile 10, and the roller 6 is in contact with the inclined surface 7 near the smallest diameter of the cam 3.
  • the movable carrier 10 When reassembling the mainspring, the movable carrier 10 is rotated in a first direction of rotation, for example due to the rotation of the barrel drum. Thanks to the pins 4, the cam 3 is rotated about the threaded axis 2 according to the first direction of rotation. The threaded axis 2 being fixed, the cam 3 moves, thanks to the threads, along the threaded axis 2 away from the movable driver 10, the openings 13 being guided by the pins 4.
  • the end 17 of the probe 5 follows the inclined surface 7 of the cam 3, which is of increasing diameter, in the direction of the driving mobile 10. Consequently, the probe is pivoted about its pivot axis, thereby actuating the pinion 16 via the rack 15. Consequently, the power reserve indicator (not shown) is moved so as to indicate an increasing power reserve.
  • the movable driver 10 is rotated in a second direction of rotation opposite to the first direction of rotation, the cam 3 thus being moved in the direction of the movable driver 10.
  • the power reserve indicator (not shown) being moved to indicate a decreasing power reserve.
  • a power reserve mechanism can be arranged in a manner different from that illustrated in the figures, while operating in an equivalent manner.
  • the shape of the cam 3 is arranged in a reverse shape than that illustrated in the Figures 1 to 3 , that is to say by having its smallest diameter directed towards the movable driver 10. This implies either a reversal of the direction of movement of the cam 3 along the threaded axis 2, or a return to the level pinion 16, an inverted display of the power reserve.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Electromechanical Clocks (AREA)

Description

Domaine techniqueTechnical area

La présente invention se rapporte au domaine de l'horlogerie. Elle concerne, plus particulièrement, un mécanisme indicateur de réserve de marche d'une pièce d'horlogerie.The present invention relates to the field of watchmaking. It relates, more particularly, to a mechanism for indicating the power reserve of a timepiece.

Etat de la téchniqueState of the technique

Les documents EP 1 333 341 , CH 95250 et CH 330 559 divulguent des mécanismes indicateurs de réserve de marche utilisant chacun une came vissée sur un axe fileté. Un palpeur se trouve en contact avec la surface de la came, et le palpeur est en liaison cinématique avec un indicateur de réserve de marche. De manière conventionnelle, l'axe fileté ou la came est en liaison cinématique avec l'arbre d'un barillet, tandis que la came ou l'axe fileté respectivement est en liaison cinématique avec le tambour du barillet. Par conséquent, lors du remontage du barillet, la came est déplacée le long de l'axe fileté dans une première direction au moyen de l'interaction des filets respectifs de l'axe et de la came. Lors du désarmage du barillet, la came est déplacée le long de l'axe fileté dans une seconde direction opposée à la première direction. Le palpeur suit la surface de la came lors desdits mouvements, et transmet ces mouvements à l'indicateur de réserve de marche, qui est conventionnellement une aiguille, un disque ou similaire.The documents EP 1 333 341 , CH 95250 and CH 330 559 disclose power reserve indicator mechanisms each using a cam screwed onto a threaded axis. A probe is in contact with the surface of the cam, and the probe is in kinematic connection with a power reserve indicator. Conventionally, the threaded axis or the cam is in kinematic connection with the shaft of a barrel, while the cam or the threaded axis respectively is in kinematic connection with the drum of the barrel. Consequently, during reassembly of the barrel, the cam is moved along the threaded axis in a first direction by means of the interaction of the respective threads of the axis and of the cam. When disarming the barrel, the cam is moved along the threaded axis in a second direction opposite to the first direction. The feeler follows the surface of the cam during said movements, and transmits these movements to the power reserve indicator, which is conventionally a needle, a disc or the like.

De tels mécanismes indicateurs de réserve de marche conviennent aux barillets les plus communs de nos jours, c'est-à-dire à des barillets remontés par leur arbre, qui actionnent le mouvement d'horlogerie par une denture disposée à la périphérie de leur tambour. Dans de tels barillets, l'arbre de barillet et le tambour tournent chacun dans des sens de rotation opposés.Such power reserve indicator mechanisms are suitable for the most common barrels nowadays, that is to say barrels wound up by their shaft, which actuate the clockwork movement by a toothing arranged at the periphery of their drum. . In such barrels, the barrel shaft and the drum each rotate in opposite directions of rotation.

Cependant, de tels mécanismes indicateurs de réserve de marche ne conviennent pas aux barillets associés à des mécanismes de fusée, dans lesquels le barillet est remonté via la fusée. Dans de tels mécanismes, le tambour doit ainsi pouvoir tourner dans les deux sens de rotation. En outre, les mécanismes de réserve de marche de l'art antérieur sont peu appropriés pour être agencés de manière dite « volante » dans une montre squelette.However, such power reserve indicator mechanisms are not suitable for barrels associated with rocket mechanisms, in which the barrel is raised via the rocket. In such mechanisms, the drum must be able to rotate in both directions of rotation. In addition, the power reserve mechanisms of the prior art are unsuitable for being so-called "flying" in a skeleton watch.

Le but de la présente invention est par conséquent d'atténuer au moins partiellement les limitations de l'art antérieur énoncées ci-dessus.The object of the present invention is therefore to at least partially alleviate the limitations of the prior art set out above.

Divulgation de l'inventionDisclosure of invention

De façon plus précise, l'invention concerne un mouvement d'horlogerie tel que défini à la revendication 1. Ce mouvement d'horlogerie se caractérise par un mécanisme indicateur de réserve de marche, qui comprend :

  • un axe fileté monté solidaire à un élément de bâti du mouvement d'horlogerie ;
  • une came présentant une surface extérieure inclinée par rapport audit axe, la came étant agencée pour coopérer par vissage avec l'axe fileté ;
  • un mobile entraîneur de ladite came, ledit mobile entraîneur étant mis en rotation dans les deux sens de rotation au moyen du barillet du mouvement, et comprenant au moins un moyen d'entraînement en rotation de ladite came, solidaire avec ledit mobile entraîneur ;
  • un palpeur en contact avec ladite surface extérieure de la came et en liaison cinématique avec un indicateur de réserve de marche.
More specifically, the invention relates to a timepiece movement as defined in claim 1. This timepiece movement is characterized by a power reserve indicator mechanism, which comprises:
  • a threaded pin mounted integral with a frame element of the watch movement;
  • a cam having an outer surface inclined relative to said axis, the cam being arranged to cooperate by screwing with the threaded axis;
  • a driving mobile of said cam, said driving mobile being rotated in both directions of rotation by means of the movement barrel, and comprising at least one means for driving said cam in rotation, integral with said driving mobile;
  • a feeler in contact with said outer surface of the cam and in kinematic connection with a power reserve indicator.

Grâce à ces caractéristiques est proposé un mécanisme indicateur de réserve de marche qui convient aux barillets associés à un mécanisme de fusée. De plus, à cause du fait que l'axe fileté est monté fixe à un élément de bâti de la pièce d'horlogerie, ce qui entraîne une stabilité mécanique importante, le mécanisme peut aisément être configuré de manière « volante », car l'axe fileté peut être supporté soit exclusivement à une seule extrémité, soit fermement à une extrémité et légèrement à l'autre extrémité.Thanks to these characteristics, a power reserve indicator mechanism is proposed which is suitable for barrels associated with a rocket mechanism. In addition, due to the fact that the threaded axis is fixedly mounted to a frame element of the timepiece, which results in significant mechanical stability, the mechanism can easily be configured in a “flying” manner, because the threaded spindle can be supported either exclusively at one end only, or firmly at one end and slightly at the other end.

Dans un mode de réalisation particulier, au moins un moyen d'entraînement comprend au moins un tenon solidaire au mobile entraîneur. Ledit au moins un tenon est agencé substantiellement parallèle à l'axe fileté et passe à travers une ouverture correspondante ménagée dans ladite came, ce qui entraîne la came en rotation de manière simple et fiable, et sert en outre pour son guidage.In a particular embodiment, at least one drive means comprises at least one stud integral with the driving mobile. Said at least one stud is arranged substantially parallel to the threaded axis and passes through a corresponding opening made in said cam, which drives the cam in rotation simply and reliably, and also serves for its guidance.

Dans encore un autre mode de réalisation particulier, la came est de forme tronconique. Une telle forme est avantageusement simple à manufacturer.In yet another particular embodiment, the cam is of frustoconical shape. Advantageously, such a shape is simple to manufacture.

Dans encore un mode de réalisation particulière, le mobile entraîneur est monté libre en rotation autour dudit axe fileté. Par conséquent, on obtient une construction simple.In yet another particular embodiment, the driving mobile is mounted to rotate freely around said threaded axis. Consequently, a simple construction is obtained.

Dans un autre mode de réalisation particulier, le palpeur comprend un galet en contact avec ladite surface inclinée de ladite came et monté libre en rotation sur une bascule du palpeur, le galet étant de préférence en rubis. Les frottements entre le palpeur et la came sont ainsi minimisés, réduisant en conséquence l'usure de ces parties. De préférence, le plan dudit galet est agencé perpendiculairement à une tangente de ladite surface extérieure de ladite came.In another particular embodiment, the probe comprises a roller in contact with said inclined surface of said cam and mounted freely in rotation on a rocker of the probe, the roller preferably being in ruby. The friction between the probe and the cam is thus minimized, consequently reducing the wear of these parts. Preferably, the plane of said roller is arranged perpendicular to a tangent of said outer surface of said cam.

De préférence, ledit mobile denté est un tambour du barillet et/ou ledit mobile denté engrène directement avec ledit mobile entraîneur.Preferably, said toothed mobile is a barrel drum and / or said toothed mobile engages directly with said driving mobile.

Finalement, l'invention concerne une pièce d'horlogerie comprenant un mouvement d'horlogerie, de préférence une montre-bracelet, comme définie ci-dessus.Finally, the invention relates to a timepiece comprising a timepiece movement, preferably a wristwatch, as defined above.

Brève description des dessinsBrief description of the drawings

D'autres détails de l'invention apparaîtront plus clairement à la lecture de la description qui suit, faite en référence au dessin annexé dans lequel :

  • Fig. 1 est une vue en perspective depuis le dessous d'un mécanisme indicateur de réserve de marche selon l'invention ;
  • Fig. 2 est une vue en perspective depuis le dessus du mécanisme indicateur de réserve de marche selon l'invention ;
  • Fig. 3 est une vue en coupe transversale du mécanisme indicateur de réserve de marche selon l'invention.
Other details of the invention will appear more clearly on reading the description which follows, given with reference to the appended drawing in which:
  • Fig. 1 is a perspective view from below of a power reserve indicator mechanism according to the invention;
  • Fig. 2 is a perspective view from above of the power reserve indicator mechanism according to the invention;
  • Fig. 3 is a cross-sectional view of the power reserve indicator mechanism according to the invention.

Modes de réalisation de l'inventionModes of Carrying Out the Invention

Les figures 1 à 3 illustrent un mécanisme indicateur de réserve de marche 1 selon l'invention. Le mécanisme comprend un axe fileté 2 destiné à être solidarisé avec un élément du bâti (non illustrée) d'un mouvement d'horlogerie, par exemple au moyen d'une vis 8. L'axe fileté 2 est par conséquent fixe, et ne peut pas être entraîné en rotation. Pour des raisons de clarté, le filetage de l'axe fileté 2 n'a pas été représenté sur les dessins. Si nécessaire, le bout de l'axe fileté 2 éloigné de l'élément de bâti peut être supporté par un palier 9 situé dans un pont supplémentaire (non illustré).The Figures 1 to 3 illustrate a power reserve indicator mechanism 1 according to the invention. The mechanism comprises a threaded axis 2 intended to be secured to an element of the frame (not shown) of a timepiece movement, for example by means of a screw 8. The threaded axis 2 is by therefore fixed, and cannot be rotated. For reasons of clarity, the thread of the threaded axis 2 has not been shown in the drawings. If necessary, the end of the threaded axis 2 remote from the frame element can be supported by a bearing 9 located in an additional bridge (not shown).

Une came 3 est engagée sur l'axe fileté 2 et comporte un taraudage non représenté, agencé pour coopérer par vissage avec l'axe fileté 2 de telle sorte qu'une rotation de la came 3 entraîne son déplacement le long de l'axe fileté. La came 3 présente une surface extérieure 7 inclinée par rapport audit axe. Bien que la came 3 ait été illustrée comme possédant une forme tronconique, d'autres formes sont également possibles, par exemple une forme présentant une surface extérieure 7 convexe ou concave.A cam 3 is engaged on the threaded axis 2 and comprises a thread not shown, arranged to cooperate by screwing with the threaded axis 2 so that a rotation of the cam 3 causes its displacement along the threaded axis . The cam 3 has an outer surface 7 inclined relative to said axis. Although the cam 3 has been illustrated as having a frustoconical shape, other shapes are also possible, for example a shape having an outer surface 7 which is convex or concave.

Un mobile entraîneur 10 de ladite came 3 est monté libre en rotation autour de l'axe fileté 2 sur un épaulement 11 dépourvu de filets, éventuellement par l'intermédiaire d'un noyau intermédiaire 12 en forme de bague annulaire, de préférence en rubis.A movable driver 10 of said cam 3 is mounted to rotate freely about the threaded axis 2 on a shoulder 11 devoid of threads, optionally by means of an intermediate core 12 in the form of an annular ring, preferably in ruby.

Le mobile entraîneur 10 comporte des moyens d'entraînement en rotation de la came 3. Dans le cas d'espèce, ces moyens d'entraînement sont constitués par deux tenons 4 fixés solidairement sur le noyau du mobile entraîneur 10 et s'étendant substantiellement perpendiculairement au plan de ce dernier, et substantiellement parallèle à l'axe fileté 2. Ces tenons 4 passent à travers des ouvertures correspondantes 13 pratiquées dans la came 3, qui peut se déplacer le long des tenons, les tenons 4 et les ouvertures 13 étant dimensionnés de telle sorte que la came 3 soit guidée par les tenons 4. Naturellement, d'autres formes de moyens d'entraînement en rotation de la came 3 sont envisageables, et le nombre de ces moyens d'entraînement peut être choisi selon le souhait de l'horloger. Par exemple, il est aussi envisageable de remplacer les tenons 4 par une forme géométrique telle qu'une étoile, polygone ou similaire, que comporte le moyeu du mobile entraîneur 10, et qui fait également office de moyen d'entraînement, de la même manière que les tenons 4. Cette forme géométrique interagit avec une cavité de forme correspondante dans la base de la came 3, ce qui a pour effet que les moyens d'entrainement de la came 3 sont cachés et effectivement invisibles du côté pont (vus depuis le sommet du cône).The driving mobile 10 comprises means for driving the cam 3 in rotation. In the present case, these driving means consist of two pins 4 fixed integrally on the core of the driving mobile 10 and extending substantially perpendicularly in the plane of the latter, and substantially parallel to the threaded axis 2. These tenons 4 pass through corresponding openings 13 made in the cam 3, which can move along the tenons, the tenons 4 and the openings 13 being dimensioned so that the cam 3 is guided by the pins 4. Naturally, other forms of means for driving the cam 3 in rotation are possible, and the number of these driving means can be chosen according to the wish of the watchmaker. For example, it is also conceivable to replace the pins 4 by a geometric shape such as a star, polygon or the like, which comprises the hub of the movable carrier 10, and which also acts as a drive means, in the same way than the pins 4. This geometric shape interacts with a correspondingly shaped cavity in the base of the cam 3, which has effect that the cam drive means 3 are hidden and effectively invisible from the bridge side (seen from the top of the cone).

Le mobile entraîneur 10 est adapté à être entraîné lui-même par la rotation dans les deux sens d'un élément tournant du barillet, par exemple son tambour ou son axe. Dans le cas d'un barillet (non illustrée) associé à un mécanisme de fusée, dans laquelle le tambour du barillet est lié à la fusée par une chaîne, une corde, ou similaire, il est conventionnel que le tambour du barillet tourne, l'axe de barillet étant fixe. Dans le présent cas, le mobile entraîneur 10 est pourvu d'une denture extérieure 14, qui est destinée à être entraîné directement ou indirectement par une denture située de manière habituelle en saillie du pourtour du tambour du barillet.The movable carrier 10 is adapted to be driven itself by the rotation in both directions of a rotating element of the barrel, for example its drum or its axis. In the case of a barrel (not shown) associated with a rocket mechanism, in which the barrel drum is linked to the rocket by a chain, a rope, or the like, it is conventional for the barrel drum to rotate, l barrel axis being fixed. In the present case, the movable carrier 10 is provided with an external toothing 14, which is intended to be driven directly or indirectly by a toothing usually located projecting from the periphery of the barrel drum.

Le mécanisme 1 comprend en outre un palpeur 5 pivoté dans un élément du bâti du mouvement d'horlogerie (non illustré), une extrémité 17 du palpeur étant maintenue en contact avec la surface extérieure 7 de la came 3 par un moyen de rappel (non illustré). De manière connue, l'extrémité 17 du palpeur 5 suit la surface extérieure 7 lors du déplacement de la came 3 le long de l'axe fileté 2. De manière avantageuse, l'extrémité 17 du palpeur 5 est munie à son extrémité d'un galet 6 monté libre en rotation sur le palpeur, et servant de suiveur de came. Afin de réduire les frottements, le galet 6 peut être en rubis ou être muni d'un revêtement approprié.The mechanism 1 further comprises a feeler 5 pivoted in an element of the frame of the clockwork movement (not shown), one end 17 of the feeler being kept in contact with the outer surface 7 of the cam 3 by a return means (not illustrated). In known manner, the end 17 of the probe 5 follows the external surface 7 during the displacement of the cam 3 along the threaded axis 2. Advantageously, the end 17 of the probe 5 is provided at its end with a roller 6 mounted free in rotation on the probe, and serving as a cam follower. In order to reduce friction, the roller 6 may be in ruby or be provided with an appropriate coating.

Le palpeur 5 est associé à une crémaillère 15 en liaison cinématique avec un pignon 16 associé à un indicateur de réserve de marche (non illustré) tel qu'une aiguille, une disque, ou similaire. De manière alternative, la crémaillère 15 peut être remplacée par un râteau. Le type de liaison entre la crémaillère 15 et le pignon 16 est à la portée de l'homme du métier et n'a pas besoin d'être décrit en détail.The probe 5 is associated with a rack 15 in kinematic connection with a pinion 16 associated with a power reserve indicator (not shown) such as a needle, a disc, or the like. Alternatively, the rack 15 can be replaced by a rake. The type of connection between the rack 15 and the pinion 16 is within the reach of those skilled in the art and does not need to be described in detail.

Le principe de fonctionnement du mécanisme indicateur 1 de réserve de marche sera maintenant décrit en référence au mode de réalisation des figures 1 à 3.The operating principle of the power reserve indicator mechanism 1 will now be described with reference to the embodiment of the Figures 1 to 3 .

Dans la configuration illustrée dans les figures, le ressort moteur du barillet (non illustré) auquel le mécanisme indicateur 1 de réserve de marche est associé est dans un état désarmé. Par conséquent, la came 3 se trouve proche du mobile entraîneur 10, et le galet 6 se trouve en contact avec la surface inclinée 7 près du diamètre le moins important de la came 3.In the configuration illustrated in the figures, the mainspring of the barrel (not shown) with which the power reserve indicator mechanism 1 is associated is in a disarmed state. Therefore, cam 3 is located close to the driving mobile 10, and the roller 6 is in contact with the inclined surface 7 near the smallest diameter of the cam 3.

Lors du remontage du ressort moteur, le mobile entraîneur 10 est mis en rotation selon un premier sens de rotation, par exemple dû à la rotation du tambour de barillet. Grâce aux tenons 4, la came 3 est mise en rotation autour de l'axe fileté 2 selon le premier sens de rotation. L'axe fileté 2 étant fixe, la came 3 se déplace, grâce aux filetages, le long de l'axe fileté 2 en s'éloignement au mobile entraîneur 10, les ouvertures 13 étant guidées par les tenons 4.When reassembling the mainspring, the movable carrier 10 is rotated in a first direction of rotation, for example due to the rotation of the barrel drum. Thanks to the pins 4, the cam 3 is rotated about the threaded axis 2 according to the first direction of rotation. The threaded axis 2 being fixed, the cam 3 moves, thanks to the threads, along the threaded axis 2 away from the movable driver 10, the openings 13 being guided by the pins 4.

Lorsque la came 3 se déplace le long de l'axe fileté 2, l'extrémité 17 du palpeur 5 suit la surface inclinée 7 de la came 3, qui est de diamètre croissant, en direction du mobile entraîneur 10. Par conséquent, le palpeur est pivoté autour de son axe de pivotement, actionnant ainsi le pignon 16 par l'intermédiaire de la crémaillère 15. Par conséquent, l'indicateur de réserve de marche (non illustré) est déplacé de manière à indiquer une réserve de marche croissante.When the cam 3 moves along the threaded axis 2, the end 17 of the probe 5 follows the inclined surface 7 of the cam 3, which is of increasing diameter, in the direction of the driving mobile 10. Consequently, the probe is pivoted about its pivot axis, thereby actuating the pinion 16 via the rack 15. Consequently, the power reserve indicator (not shown) is moved so as to indicate an increasing power reserve.

Lors du dévidement du ressort moteur, le mobile entraîneur 10 est mis en rotation dans un second sens de rotation opposé au premier sens de rotation, la came 3 étant ainsi déplacée en direction du mobile entraîneur 10. Les actions décrites dans le paragraphe précédent s'inversent, l'indicateur de réserve de marche (non illustré) étant déplacé de manière à indiquer une réserve de marche diminuant.During the unwinding of the mainspring, the movable driver 10 is rotated in a second direction of rotation opposite to the first direction of rotation, the cam 3 thus being moved in the direction of the movable driver 10. The actions described in the preceding paragraph are reverse, the power reserve indicator (not shown) being moved to indicate a decreasing power reserve.

Il est évident pour l'homme du métier qu'un mécanisme de réserve de marche selon l'invention peut être agencé de manière différente de celui illustré dans les figures, tout en fonctionnant de manière équivalente. Par exemple, il est envisageable que la forme de la came 3 soit agencée selon une forme inverse que celle illustrée dans les figures 1 à 3, c'est-à-dire en ayant son diamètre le moins important dirigé vers le mobile entraîneur 10. Ceci implique soit un renversement de la direction de déplacement de la came 3 le long de l'axe fileté 2, soit un renvoi au niveau du pignon 16, soit un affichage inversé de la réserve de marche.It is obvious to a person skilled in the art that a power reserve mechanism according to the invention can be arranged in a manner different from that illustrated in the figures, while operating in an equivalent manner. For example, it is conceivable that the shape of the cam 3 is arranged in a reverse shape than that illustrated in the Figures 1 to 3 , that is to say by having its smallest diameter directed towards the movable driver 10. This implies either a reversal of the direction of movement of the cam 3 along the threaded axis 2, or a return to the level pinion 16, an inverted display of the power reserve.

Bien que l'invention ait été divulguée en référence à un mode de réalisation spécifique, l'invention n'est pas limitée à cet exemple particulier. Le mécanisme indicateur de réserve de marche peut être modifié par l'homme du métier sans sortir du cadre de l'invention défini par les revendications annexées.Although the invention has been disclosed with reference to a specific embodiment, the invention is not limited to this particular example. The power reserve indicator mechanism can be modified by a person skilled in the art without departing from the scope of the invention defined by the appended claims.

Claims (8)

  1. A clockwork movement comprising:
    - a barrel in which a mainspring is housed, the barrel being arranged in kinematic connection with a fusee mechanism; and
    - a power reserve indicator mechanism (1) which includes:
    - a threaded axis (2) mounted integral with a frame element of said clockwork movement;
    - a cam (3) having an outer surface (7) inclined with respect to said axis (2), the cam (3) being arranged to cooperate by screwing with the threaded axis (2);
    - a cam (3) driving mobile (10), said driving mobile (10) being arranged in kinematic connection with the barrel so as to be rotated in both directions of rotation during winding and unwinding of the mainspring of the barrel, and comprising at least one means (4) for rotating said cam (3), integral with said driving mobile;
    - a probe (5) in contact with said outer surface (7) of said cam (3) and in kinematic connection with a power reserve indicator.
  2. A clockwork movement according to claim 1, wherein said at least one driving means (4) comprises at least one stud (4) integral with said driving mobile (10), said at least one stud being arranged substantially parallel to said threaded axis (2) and passing through a corresponding opening (13) provided in said cam (3).
  3. A clockwork movement according to one of the preceding claims, wherein said cam (3) is truncated conical in shape.
  4. A clockwork movement according to one of the preceding claims, wherein said driving mobile (10) is mounted freely rotatable about said threaded axis (2).
  5. A clockwork movement according to one of the preceding claims, wherein said probe (5) comprises a roller (6) in contact with said inclined surface (7) and mounted freely rotatable on a lever of the probe (5), the roller (6) being preferably made of ruby.
  6. A clockwork movement according to the preceding claim, wherein the plane of said roller (6) is arranged perpendicular to a tangent of said outer surface (7).
  7. A clockwork movement according to one of claims 1 to 6, wherein 2 said kinematic connection between the driving mobile (10) and the barrel comprises a toothed mobile which, at least, either :
    - is a drum of the barrel; or;
    - directly meshes with said driving mobile (10).
  8. A timepiece comprising a clockwork movement according to one of the preceding claims.
EP13191468.1A 2013-11-04 2013-11-04 Power reserve indicator mechanism Active EP2869137B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP13191468.1A EP2869137B1 (en) 2013-11-04 2013-11-04 Power reserve indicator mechanism
CN201480056918.6A CN105637431B (en) 2013-11-04 2014-11-04 The indicating mechanism of power reserve
PCT/EP2014/073726 WO2015063336A2 (en) 2013-11-04 2014-11-04 Power reserve indicator mechanism
HK16107644.7A HK1219786A1 (en) 2013-11-04 2016-06-30 Power reserve indicator mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13191468.1A EP2869137B1 (en) 2013-11-04 2013-11-04 Power reserve indicator mechanism

Publications (2)

Publication Number Publication Date
EP2869137A1 EP2869137A1 (en) 2015-05-06
EP2869137B1 true EP2869137B1 (en) 2019-12-25

Family

ID=49515277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13191468.1A Active EP2869137B1 (en) 2013-11-04 2013-11-04 Power reserve indicator mechanism

Country Status (4)

Country Link
EP (1) EP2869137B1 (en)
CN (1) CN105637431B (en)
HK (1) HK1219786A1 (en)
WO (1) WO2015063336A2 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1061171A (en) * 1912-05-09 1913-05-06 Wittnauer & Co A Indicating mechanism for timepieces.
CH95250A (en) 1921-09-08 1922-08-01 Louis Brandt & Frere Sa Mechanism indicating the winding and development of the mainspring of timepieces, such as watches and clocks.
GB185719A (en) * 1921-09-08 1923-03-15 Louis Brandt & Frere Improved mechanism for indicating the degree of winding of the main spring in clockwork articles
CH330559A (en) 1956-06-13 1958-06-15 Brac S A Automatic watch with winding oscillating weight
DE1063087B (en) * 1956-06-13 1959-08-06 Brac A G Sequence counter for oscillating mass elevator clocks
JP3496544B2 (en) * 1998-04-17 2004-02-16 セイコーエプソン株式会社 Mainspring device and clock
JP2003227883A (en) 2002-02-04 2003-08-15 Seiko Instruments Inc Watch powered by mainspring
US7832924B2 (en) * 2007-03-27 2010-11-16 Seiko Epson Corporation Timepiece

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN105637431A (en) 2016-06-01
HK1219786A1 (en) 2017-04-13
EP2869137A1 (en) 2015-05-06
WO2015063336A2 (en) 2015-05-07
CN105637431B (en) 2017-11-24
WO2015063336A3 (en) 2015-09-11

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