WO2015063336A2 - Power reserve indicator mechanism - Google Patents

Power reserve indicator mechanism Download PDF

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Publication number
WO2015063336A2
WO2015063336A2 PCT/EP2014/073726 EP2014073726W WO2015063336A2 WO 2015063336 A2 WO2015063336 A2 WO 2015063336A2 EP 2014073726 W EP2014073726 W EP 2014073726W WO 2015063336 A2 WO2015063336 A2 WO 2015063336A2
Authority
WO
WIPO (PCT)
Prior art keywords
cam
power reserve
reserve indicator
indicator mechanism
mobile
Prior art date
Application number
PCT/EP2014/073726
Other languages
French (fr)
Other versions
WO2015063336A3 (en
Inventor
David Candaux
Original Assignee
Chronometrie Ferdinand Berthoud Sa
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 Chronometrie Ferdinand Berthoud Sa filed Critical Chronometrie Ferdinand Berthoud Sa
Priority to CN201480056918.6A priority Critical patent/CN105637431B/en
Publication of WO2015063336A2 publication Critical patent/WO2015063336A2/en
Publication of WO2015063336A3 publication Critical patent/WO2015063336A3/en
Priority to HK16107644.7A priority patent/HK1219786A1/en

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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
    • 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, a mechanism indicating a power reserve of a timepiece. State of the art
  • the documents EP 1 333 341, CH 95250 and CH 330 559 disclose power reserve indicator mechanisms each using a cam screwed on 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 shaft or the cam is kinematically connected to the shaft of a barrel, while the cam or the threaded shaft respectively is kinematically connected with the cylinder drum. Therefore, when reassembling 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 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 probe follows the surface of the cam during said movements, and transmits these movements to the power reserve indicator, which is conventionally a needle, a disk or the like.
  • Such power reserve indicator mechanisms are suitable for the most common cylinders of today, that is to say, barrels raised by their shaft, which actuate the watch movement by a toothing disposed at the periphery. of their drum. In such barrels, 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 mitigate the limitations of the prior art set forth above.
  • the invention relates to a power reserve indicator mechanism for a timepiece, which comprises:
  • a threaded shaft intended to be mounted integral with a frame element of said timepiece
  • a cam having an outer surface inclined with respect to said axis, the cam being arranged to cooperate by screwing with the threaded shaft;
  • a driving mobile of said cam said driving mobile being intended to be rotated in both directions of rotation by means of a barrel of said timepiece, and comprising at least one means for driving in rotation of said cam, integral with said driving mobile;
  • a probe in contact with said outer surface of the cam and in kinematic connection with a power reserve indicator.
  • the threaded shaft is fixedly mounted to a frame member of the timepiece, resulting in significant mechanical stability, the mechanism can easily be configured so that
  • Threaded shaft can be supported either exclusively at one end or firmly at one end and slightly at the other end.
  • At least one drive means comprises at least one pin secured to the driving carrier. Said at least one tenon is arranged substantially parallel to the threaded axis and passes through a corresponding opening in said cam, which drives the cam in rotation simply and reliably, and is further used for its guidance.
  • the cam is of frustoconical shape. Such a form is advantageously simple to manufacture.
  • the driving carrier is rotatably mounted about said threaded axis. Therefore, we obtain a simple construction.
  • the probe comprises a roller in contact with said inclined surface of said cam and rotatably mounted on a rocker probe, the roller being preferably ruby.
  • the friction between the probe and the cam is thus minimized, thereby reducing the wear of these parts.
  • the plane of said roller is arranged perpendicular to a tangent of said outer surface of said cam.
  • the invention further relates to a watch movement comprising a barrel in which is housed a motor spring, the barrel being in kinematic connection with a toothed gear intended to be rotated according to the two directions of rotation during reassembly. and the unwinding of the mainspring, and a power reserve indicator mechanism as defined above, said threaded axis being secured to a frame member of said clockwork movement and said driving gear being in kinematic connection with said toothed gear.
  • said toothed mobile is a barrel drum and / or said toothed gear engages directly with said driving mobile.
  • the invention relates to a timepiece comprising a watch movement, preferably a wristwatch, as defined above.
  • - 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.
  • FIGs 1 to 3 illustrate a power reserve indicator mechanism 1 according to the invention.
  • the mechanism comprises a threaded shaft 2 intended to be secured to an element of the frame (not shown) of a clockwork movement, for example by means of a screw 8.
  • the threaded shaft 2 is therefore fixed, and does not can not be rotated.
  • the threading of the threaded shaft 2 has not been shown in the drawings.
  • the end of the threaded shaft 2 remote from the frame member may be supported by a bearing 9 located in an additional bridge (not shown).
  • a cam 3 is engaged on the threaded shaft 2 and has a tapping not shown, arranged to cooperate by screwing with the threaded shaft 2 so that a rotation of the cam 3 causes its movement along the axis. threaded shaft.
  • the cam 3 has an outer surface 7 inclined with respect to said axis.
  • the cam 3 has been shown to have a frustoconical shape, other shapes are also possible, for example a shape having a convex or concave outer surface 7.
  • a movable carrier 10 of said cam 3 is rotatably mounted about the threaded axis 2 on a shoulder 1 1 devoid of threads, possibly via an intermediate ring 12 in the form of an annular ring, ruby preference.
  • the drive carrier 10 comprises means for driving the cam 3 in rotation.
  • these drive means consist of two pins 4 fixed integrally on the core of the driving carrier 10 and extending substantially perpendicularly to the plane of the latter, and substantially parallel to the threaded axis 2. These pins 4 pass through corresponding openings 13 made in the cam 3, which can move along the tenons, the tenons and the openings 13 being dimensioned so that the cam 3 is guided by the tenons 4.
  • other forms of rotation drive means of the cam 3 are conceivable, and the number of these drive 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 driving carrier 10, and which also acts as a drive means, in the same way 4.
  • This geometric shape interacts with a correspondingly shaped cavity in the base of the cam 3, which has the effect that the driving means of the cam 3 are hidden and effectively invisible on the bridge side (seen since the summit of the cone).
  • the driving mobile 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 driving carrier 10 is provided with an external toothing 14, which is intended to be driven directly or indirectly by a toothing normally located projecting from the periphery of the barrel of the barrel.
  • the mechanism 1 further comprises a probe 5 pivoted in a frame member of the watch movement (not shown), an end 17 of the probe being held in contact with the outer surface 7 of the cam 3 by means of recall (not shown).
  • the end 17 of the probe 5 follows the outer 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 to rotate on the probe, and acting as cam follower. To reduce friction, the roller 6 may be ruby or be provided with a suitable coating.
  • the probe 5 is associated with a rack 15 in kinematic connection with a pinion 6 associated with a power reserve indicator (not shown) such as a needle, a disk, or the like.
  • a power reserve indicator such as a needle, a disk, 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 abilities of those skilled in the art and need not be described in detail.
  • the operating principle of the power reserve indicator mechanism 1 will now be described with reference to the embodiment of FIGS. 1 to 3.
  • the mainspring of the cylinder (not shown) to which the power reserve indicator mechanism 1 is associated is in a disarmed state. Consequently, the cam 3 is close to the driving gear 10, and the roller 6 is in contact with the inclined surface 7 near the smallest diameter of the cam 3.
  • the driving carrier 10 When reassembling the mainspring, the driving carrier 10 is rotated in a first direction of rotation, for example due to the rotation of the barrel drum. With the pins 4, the cam 3 is rotated about the threaded axis 2 in the first direction of rotation. The threaded shaft 2 being stationary, the cam 3 moves, thanks to the threads, along the threaded shaft 2 away from the driving carrier 10, the openings 13 being guided by the tenons 4.
  • the power reserve indicator (not shown) is moved to indicate a power reserve growing.
  • the driving carrier 10 is rotated in a second direction of rotation opposite the first direction of rotation, the cam 3 is thus moved towards the driving carrier 10.
  • the actions described in the paragraph the reverse power indicator (not shown) being moved to indicate a diminishing power reserve.
  • a power reserve mechanism according to the invention can be arranged differently than the one illustrated in the figures, while operating in an equivalent manner.
  • the shape of the cam 3 is arranged in an inverse form as that illustrated in FIGS. 1 to 3, that is to say having its least important diameter directed towards the driving mobile 10. This implies either a reversal of the direction of displacement of the cam 3 along the threaded axis 2, or a return at the pinion 16, or an inverted display of the power reserve.

Abstract

The invention relates to a power reserve indicator mechanism (1) for a timepiece, including: a threaded pin (2) intended for being mounted secured to a case element of said timepiece; a cam (3) having an outer surface (7) tilted relative to said pin (2), the cam (3) being arranged such as to engage by screwing with the threaded pin (2); a driving mobile (10) of said cam (3), said driving mobile (10) being intended for being rotated in both directions of rotation by a barrel of said timepiece, and including at least one means for rotating (4) said cam (3), secured to said driving mobile; a sensor (5) in contact with said outer surface (7) of said came (3) and kinematically linked with a power reserve indicator.

Description

Description  Description
Mécanisme indicateur de réserve de marche  Indicator mechanism of power reserve
Domaine technique Technical area
[0001] 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. Etat de la téchnique  The present invention relates to the field of watchmaking. It relates, more particularly, a mechanism indicating a power reserve of a timepiece. State of the art
[0002] 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 on 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 shaft or the cam is kinematically connected to the shaft of a barrel, while the cam or the threaded shaft respectively is kinematically connected with the cylinder drum. Therefore, when reassembling 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 the cam. When disarming the barrel, the cam is moved along the threaded axis in a second direction opposite to the first direction. The probe follows the surface of the cam during said movements, and transmits these movements to the power reserve indicator, which is conventionally a needle, a disk or the like.
[0003] 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 cylinders of today, that is to say, barrels raised by their shaft, which actuate the watch movement by a toothing disposed at the periphery. of their drum. In such barrels, the barrel shaft and the drum each rotate in opposite directions of rotation.
[0004] 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 not appropriate to be arranged so-called "flying" in a skeleton watch.
[0005] 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 mitigate the limitations of the prior art set forth above.
Divulgation de l'invention Disclosure of the invention
[0006] De façon plus précise, l'invention concerne un mécanisme indicateur de réserve de marche pour pièce d'horlogerie, qui comprend :  More specifically, the invention relates to a power reserve indicator mechanism for a timepiece, which comprises:
- un axe fileté destiné à être monté solidaire à un élément de bâti de ladite pièce d'horlogerie ;  a threaded shaft intended to be mounted integral with a frame element of said timepiece;
- une came présentant une surface extérieure inclinée par rapport audit axe, la came étant agencée pour coopérer par vissage avec l'axe fileté ; a cam having an outer surface inclined with respect to said axis, the cam being arranged to cooperate by screwing with the threaded shaft;
- un mobile entraîneur de ladite came, ledit mobile entraîneur étant destiné à être mis en rotation dans les deux sens de rotation au moyen d'un barillet de ladite pièce d'horlogerie, et comprenant au moins un moyen d'entraînement en rotation de ladite came, solidaire avec ledit mobile entraîneur ; a driving mobile of said cam, said driving mobile being intended to be rotated in both directions of rotation by means of a barrel of said timepiece, and comprising at least one means for driving in rotation of said cam, integral with said driving mobile;
- un palpeur en contact avec ladite surface extérieure de la came et en liaison cinématique avec un indicateur de réserve de marche.  - A probe in contact with said outer surface of the cam and in kinematic connection with a power reserve indicator.
[0007] Grâce à ces caractéristiques est proposé un mécanisme indicateur de Thanks to these characteristics is proposed an indicator mechanism of
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  power reserve suitable for barrels associated with a rocket mechanism. In addition, because the threaded shaft is fixedly mounted to a frame member of the timepiece, resulting in significant mechanical stability, the mechanism can easily be configured so that
« 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.  "Flying" because the threaded shaft can be supported either exclusively at one end or firmly at one end and slightly at the other end.
[0008] 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. [0009] Dans encore un autre mode de réalisation particulier, la came est de forme tronconique. Une telle forme est avantageusement simple à manufacturer. In a particular embodiment, at least one drive means comprises at least one pin secured to the driving carrier. Said at least one tenon is arranged substantially parallel to the threaded axis and passes through a corresponding opening in said cam, which drives the cam in rotation simply and reliably, and is further used for its guidance. In yet another particular embodiment, the cam is of frustoconical shape. Such a form is advantageously simple to manufacture.
[0010] 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 embodiment, the driving carrier is rotatably mounted about said threaded axis. Therefore, we obtain a simple construction.
[001 1] 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. [001 1] In another particular embodiment, the probe comprises a roller in contact with said inclined surface of said cam and rotatably mounted on a rocker probe, the roller being preferably ruby.
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. The friction between the probe and the cam is thus minimized, thereby 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.
[0012] L'invention concerne en outre un mouvement d'horlogerie comprenant un barillet dans lequel est logé un ressort moteur, le barillet étant en liaison cinématique avec un mobile denté destiné à être mis en rotation selon les deux sens de rotation lors du remontage et du dévidement du ressort moteur, et un mécanisme indicateur de réserve de marche comme défini ci-dessus, ledit axe fileté étant solidarisé à un élément de bâti dudit mouvement d'horlogerie et ledit mobile entraîneur étant en liaison cinématique avec ledit mobile denté.  The invention further relates to a watch movement comprising a barrel in which is housed a motor spring, the barrel being in kinematic connection with a toothed gear intended to be rotated according to the two directions of rotation during reassembly. and the unwinding of the mainspring, and a power reserve indicator mechanism as defined above, said threaded axis being secured to a frame member of said clockwork movement and said driving gear being in kinematic connection with said toothed gear.
[0013] 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 gear engages directly with said driving mobile.
[0014] 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 watch movement, preferably a wristwatch, as defined above.
Brève description des dessins Brief description of the drawings
[0015] 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 :  Other details of the invention will emerge more clearly on reading the description which follows, given with reference to the appended drawing in which:
- 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. 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 est une vue en coupe transversale du mécanisme indicateur de réserve de marche selon l'invention.  - Fig. 3 is a cross-sectional view of the power reserve indicator mechanism according to the invention.
Modes de réalisation de l'invention Embodiments of the invention
[0016] 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).  Figures 1 to 3 illustrate a power reserve indicator mechanism 1 according to the invention. The mechanism comprises a threaded shaft 2 intended to be secured to an element of the frame (not shown) of a clockwork movement, for example by means of a screw 8. The threaded shaft 2 is therefore fixed, and does not can not be rotated. For the sake of clarity, the threading of the threaded shaft 2 has not been shown in the drawings. If necessary, the end of the threaded shaft 2 remote from the frame member may be supported by a bearing 9 located in an additional bridge (not shown).
[0017] 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 shaft 2 and has a tapping not shown, arranged to cooperate by screwing with the threaded shaft 2 so that a rotation of the cam 3 causes its movement along the axis. threaded shaft. The cam 3 has an outer surface 7 inclined with respect to said axis. Although the cam 3 has been shown to have a frustoconical shape, other shapes are also possible, for example a shape having a convex or concave outer surface 7.
[0018] Un mobile entraîneur 10 de ladite came 3 est monté libre en rotation autour de l'axe fileté 2 sur un épaulement 1 1 dépourvu de filets, éventuellement par l'intermédiaire d'un noyau intermédiaire 12 en forme de bague annulaire, de préférence en rubis. A movable carrier 10 of said cam 3 is rotatably mounted about the threaded axis 2 on a shoulder 1 1 devoid of threads, possibly via an intermediate ring 12 in the form of an annular ring, ruby preference.
[0019] 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'entraînement de la came 3 sont cachés et effectivement invisibles du côté pont (vus depuis le sommet du cône). The drive carrier 10 comprises means for driving the cam 3 in rotation. In this particular case, these drive means consist of two pins 4 fixed integrally on the core of the driving carrier 10 and extending substantially perpendicularly to the plane of the latter, and substantially parallel to the threaded axis 2. These pins 4 pass through corresponding openings 13 made in the cam 3, which can move along the tenons, the tenons and the openings 13 being dimensioned so that the cam 3 is guided by the tenons 4. Naturally, other forms of rotation drive means of the cam 3 are conceivable, and the number of these drive 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 driving carrier 10, and which also acts as a drive means, in the same way 4. This geometric shape interacts with a correspondingly shaped cavity in the base of the cam 3, which has the effect that the driving means of the cam 3 are hidden and effectively invisible on the bridge side (seen since the summit of the cone).
[0020] 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 driving mobile 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 drum of the barrel is connected to the rocket by a chain, a rope, or the like, it is conventional that the barrel of the barrel rotates, barrel axis being fixed. In this case, the driving carrier 10 is provided with an external toothing 14, which is intended to be driven directly or indirectly by a toothing normally located projecting from the periphery of the barrel of the barrel.
[0021] 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 probe 5 pivoted in a frame member of the watch movement (not shown), an end 17 of the probe being held in contact with the outer surface 7 of the cam 3 by means of recall (not shown). In known manner, the end 17 of the probe 5 follows the outer 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 to rotate on the probe, and acting as cam follower. To reduce friction, the roller 6 may be ruby or be provided with a suitable coating.
[0022] Le palpeur 5 est associé à une crémaillère 15 en liaison cinématique avec un pignon ^ 6 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. [0023] 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 probe 5 is associated with a rack 15 in kinematic connection with a pinion 6 associated with a power reserve indicator (not shown) such as a needle, a disk, 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 abilities of those skilled in the art and need not be described in detail. The operating principle of the power reserve indicator mechanism 1 will now be described with reference to the embodiment of FIGS. 1 to 3.
[0024] 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 cylinder (not shown) to which the power reserve indicator mechanism 1 is associated is in a disarmed state. Consequently, the cam 3 is close to the driving gear 10, and the roller 6 is in contact with the inclined surface 7 near the smallest diameter of the cam 3.
[0025] 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 driving carrier 10 is rotated in a first direction of rotation, for example due to the rotation of the barrel drum. With the pins 4, the cam 3 is rotated about the threaded axis 2 in the first direction of rotation. The threaded shaft 2 being stationary, the cam 3 moves, thanks to the threads, along the threaded shaft 2 away from the driving carrier 10, the openings 13 being guided by the tenons 4.
[0026] 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 carrier 10. Therefore , the probe is pivoted about its pivot axis, thereby actuating the pinion 16 via the rack 15. Therefore, the power reserve indicator (not shown) is moved to indicate a power reserve growing.
[0027] 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. [0028] 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. During unwinding of the motor spring, the driving carrier 10 is rotated in a second direction of rotation opposite the first direction of rotation, the cam 3 is thus moved towards the driving carrier 10. The actions described in the paragraph the reverse power indicator (not shown) being moved to indicate a diminishing power reserve. It is obvious to those skilled in the art that a power reserve mechanism according to the invention can be arranged differently than the one 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 an inverse form as that illustrated in FIGS. 1 to 3, that is to say having its least important diameter directed towards the driving mobile 10. This implies either a reversal of the direction of displacement of the cam 3 along the threaded axis 2, or a return at the pinion 16, or an inverted display of the power reserve.
[0029] 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 may be modified by those skilled in the art without departing from the scope of the invention defined by the appended claims.

Claims

Mécanisme indicateur de réserve de marche (1 ) pour pièce d'horlogerie, caractérisé en ce que ledit mécanisme indicateur (1) comprend : A power reserve indicator mechanism (1) for a timepiece, characterized in that said indicator mechanism (1) comprises:
- un axe fileté (2) destiné à être monté solidaire à un élément de bâti de ladite pièce d'horlogerie ;  - A threaded shaft (2) intended to be mounted integral with a frame member of said timepiece;
- une came (3) présentant une surface extérieure (7) inclinée par rapport audit axe (2), la came (3) étant agencée pour coopérer par vissage avec l'axe fileté (2) ;  - 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 shaft (2);
- un mobile entraîneur (10) de ladite came (3), ledit mobile entraîneur (10) étant destiné à être mise en rotation dans les deux sens de rotation au moyen d'un barillet de ladite pièce d'horlogerie, et comprenant au moins un moyen d'entraînement en rotation (4) de ladite came (3), solidaire avec ledit mobile entraîneur ;  a driving mobile (10) of said cam (3), said driving mobile (10) being intended to be rotated in both directions of rotation by means of a cylinder of said timepiece, and comprising at least a rotation drive means (4) of said cam (3), integral with said driving mobile;
- un palpeur (5) en contact avec ladite surface extérieur (7) de ladite came (3) et en liaison cinématique avec un indicateur de réserve de marche.  - A probe (5) in contact with said outer surface (7) of said cam (3) and in kinematic connection with a power reserve indicator.
Mécanisme indicateur de réserve de marche (1 ) selon la revendication précédente, dans lequel ledit au moins un moyen d'entraînement (4) comprend au moins un tenon (4) solidaire à ledit mobile entraîneur (10), ledit au moins un tenon étant agencé substantiellement parallèle audit axe fileté (2) et passant à travers une ouverture (13) correspondante ménagée dans ladite came (3). Power reserve indicator mechanism (1) according to the preceding claim, wherein said at least one drive means (4) comprises at least one pin (4) integral with said driving carrier (10), said at least one pin being arranged substantially parallel to said threaded shaft (2) and passing through a corresponding aperture (13) in said cam (3).
Mécanisme indicateur de réserve de marche (1 ) selon l'une des revendications précédentes, dans lequel ladite came (3) est de forme tronconique. Power reserve indicator mechanism (1) according to one of the preceding claims, wherein said cam (3) is of frustoconical shape.
Mécanisme indicateur de réserve de marche (1 ) selon l'une des revendications précédentes, dans lequel ledit mobile entraîneur (10) est monté libre en rotation autour dudit axe fileté (2). Mécanisme indicateur de réserve de marche (1 ) selon l'une des revendications précédentes, dans lequel ledit palpeur (5) comprend un galet (6) en contact avec ladite surface inclinée (7) et monté libre en rotation sur une bascule du palpeur (5), le galet (6) étant de préférence en rubis. Power reserve indicator mechanism (1) according to one of the preceding claims, wherein said driving carrier (10) is rotatably mounted about said threaded shaft (2). Power reserve indicator mechanism (1) according to one of the preceding claims, wherein said probe (5) comprises a roller (6) in contact with said inclined surface (7) and mounted free to rotate on a rocker of the probe ( 5), the roller (6) being preferably ruby.
Mécanisme indicateur de réserve de marche (1 ) selon la revendication précédente, dans lequel le plan dudit galet (6) est agencé perpendiculairement à un tangent de ladite surface extérieure (7). 7. Mouvement d'horlogerie comprenant un barillet dans lequel est logé un ressort moteur, le barillet étant en liaison cinématique avec un mobile denté destiné à être mise en rotation selon les deux sens de rotation lors du remontage et du dévidement du ressort moteur ; un mécanisme indicateur de réserve de marche (1 ) selon l'une des revendications précédentes, ledit axe fileté (2) étant solidarisé à un élément de bâti dudit mouvement d'horlogerie et ledit mobile entraîneur (10) étant en liaison cinématique avec ledit mobile denté. Power reserve indicator mechanism (1) according to the preceding claim, wherein the plane of said roller (6) is arranged perpendicular to a tangent of said outer surface (7). 7. Watchmaking movement comprising a cylinder in which is housed a motor spring, the barrel being in kinematic connection with a toothed gear intended to be rotated in the two directions of rotation during the winding and unwinding of the mainspring; a power reserve indicating mechanism (1) according to one of the preceding claims, said threaded shaft (2) being secured to a frame member of said clockwork movement and said driving mobile (10) being kinematically connected with said mobile toothed.
Mouvement d'horlogerie selon la revendication précédente, dans lequel est valide au moins l'un de : Clock movement according to the preceding claim, wherein is valid at least one of:
- ledit mobile denté est un tambour du barillet ;  said toothed mobile is a drum of the barrel;
- ledit mobile denté engrène directement avec ledit mobile entraîneur (10).  said toothed mobile meshes directly with said driving mobile (10).
Pièce d'horlogerie comprenant un mouvement d'horlogerie selon la revendication précédente. Timepiece comprising a watch movement according to the preceding claim.
PCT/EP2014/073726 2013-11-04 2014-11-04 Power reserve indicator mechanism WO2015063336A2 (en)

Priority Applications (2)

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

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EP13191468.1A EP2869137B1 (en) 2013-11-04 2013-11-04 Power reserve indicator mechanism
EP13191468.1 2013-11-04

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WO2015063336A3 WO2015063336A3 (en) 2015-09-11

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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.
CH330559A (en) 1956-06-13 1958-06-15 Brac S A Automatic watch with winding oscillating weight
EP1333341A2 (en) 2002-02-04 2003-08-06 Seiko Instruments Inc. Timepiece using spring as power

Family Cites Families (5)

* 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.
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
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
US7832924B2 (en) * 2007-03-27 2010-11-16 Seiko Epson Corporation Timepiece

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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.
CH330559A (en) 1956-06-13 1958-06-15 Brac S A Automatic watch with winding oscillating weight
EP1333341A2 (en) 2002-02-04 2003-08-06 Seiko Instruments Inc. Timepiece using spring as power

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WO2015063336A3 (en) 2015-09-11
CN105637431A (en) 2016-06-01
EP2869137B1 (en) 2019-12-25
HK1219786A1 (en) 2017-04-13
CN105637431B (en) 2017-11-24
EP2869137A1 (en) 2015-05-06

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