EP3654109B1 - Timepiece comprising two energy sources - Google Patents

Timepiece comprising two energy sources Download PDF

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Publication number
EP3654109B1
EP3654109B1 EP18205992.3A EP18205992A EP3654109B1 EP 3654109 B1 EP3654109 B1 EP 3654109B1 EP 18205992 A EP18205992 A EP 18205992A EP 3654109 B1 EP3654109 B1 EP 3654109B1
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EP
European Patent Office
Prior art keywords
barrel
drum
timepiece
springs
arbour
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Application number
EP18205992.3A
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German (de)
French (fr)
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EP3654109A1 (en
Inventor
Stéphane OES
Anthony Krüttli
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Patek Philippe SA Geneve
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Patek Philippe SA Geneve
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Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to EP18205992.3A priority Critical patent/EP3654109B1/en
Priority to PCT/IB2019/059656 priority patent/WO2020100004A1/en
Priority to CH00534/21A priority patent/CH716804B1/en
Publication of EP3654109A1 publication Critical patent/EP3654109A1/en
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Publication of EP3654109B1 publication Critical patent/EP3654109B1/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
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/008—Winding up several mainsprings or driving weights simultaneously
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/12—Driving mechanisms with mainspring with several mainsprings
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/22—Compensation of changes in the motive power of the mainspring
    • G04B1/225—Compensation of changes in the motive power of the mainspring with the aid of an interposed power-accumulator (secondary spring) which is always tensioned

Definitions

  • the present invention relates to a timepiece comprising at least a first movement driven by a first barrel comprising a first drum arranged to cooperate with a first finishing gear of the first movement, a first spring housed in the first drum and of which an outer end is coupled to the first drum and an inner end is coupled to a first barrel shaft around which the first drum is rotatably mounted, and a second movement driven by a second barrel comprising a second drum arranged to cooperate with a second finishing gear of the second movement, a second spring housed in the second drum, an outer end of which is coupled to the second drum and an inner end is coupled to a second barrel shaft around which the second drum is mounted movably in rotation.
  • the barrel is the driving member which supplies energy to the cog for finishing said movement.
  • a timepiece When a timepiece includes a base movement and another mechanism having its own movement, such as a complication such as a chronograph, it is possible to use a single power source to power both movements.
  • a complication such as a chronograph
  • the single energy source will occasionally provide less torque, which will have a chronometric influence on the basic movement.
  • Each drive member is generally in the form of a barrel comprising a drum, a spiral drive spring or "barrel spring” housed in the drum, a barrel shaft and a cover.
  • Each motor member cooperates with its own winding device, such as a ratchet driven by the winding stem (in the case of manual winding) or an oscillating weight (in the case of automatic winding).
  • the two driving members require a large volume since the necessary volume must be provided in the timepiece for two barrels with their own pivoting mechanisms, their own winding and fixing systems. Providing two independent energy sources to avoid any chronometric influence is therefore not always possible when the volume available in the timepiece is otherwise limited.
  • the present invention aims to provide a timepiece comprising two movements with two independent energy sources to avoid any chronometric influence while occupying a small volume.
  • a timepiece comprising at least a first movement driven by a first barrel comprising a first drum arranged to cooperate with a first finishing gear of the first movement, a first barrel shaft around which the first drum is mounted. movable in rotation, and a first spring housed in the first drum and of which an outer end is coupled to said first drum and an inner end is coupled to said first barrel shaft, and a second movement driven by a second barrel comprising a second drum arranged for cooperate with a second finishing gear of the second movement, a second barrel shaft around which the second drum is mounted movably in rotation, and a second spring housed in the second drum and of which an outer end is coupled to said second drum and an inner end is coupled to said second barrel shaft.
  • said first and second barrels are mounted superimposed, the first and second barrel shafts being coaxial and the interior of the first and second drums facing each other.
  • a single winding device for the first and second barrels comprising a single winding wheel, such as a ratchet, coaxial with the first and second barrel shafts, the first barrel shaft, the second barrel shaft and the winding wheel being integral in rotation and arranged to be rotated coaxially during the winding of the first and second springs and fixed during the unwinding of the first and second springs.
  • the arrangement of the two energy sources proposed according to the present invention is very compact and allows a significant saving of space, in particular thanks to a single winding device avoiding the use of a second ratchet and a second. return train to reach the winding mechanism.
  • the first and second barrels may be without a cover, the first and second springs being separated from each other by a gap. This saves the space normally occupied by the barrel lids and therefore further reduces the volume occupied by the two energy sources.
  • a separating washer is disposed in the gap separating the first and second springs in order to prevent mixing of the first and second springs.
  • the first and second barrel shafts can be mounted to be movable in rotation around a common shaft mounted on a frame. This makes it possible to save the space normally occupied by at least one of the pivot points and therefore to further reduce the volume occupied by the two energy sources.
  • the barrel shaft closest to the winding wheel can have a sleeve on which said winding wheel is mounted integral in rotation.
  • the first barrel shaft and the second barrel shaft may form a single piece.
  • the peripheral walls of the first and second drums can be nested so that the first and second drums together form a closed box containing the first and second springs.
  • the timepiece according to the invention comprises a first movement, such as a basic movement, driven by a first motor member in the form of a first barrel 1, and a second movement or auxiliary movement, such as a chronograph, driven by a second motor member in the form of a second barrel 2.
  • a first movement such as a basic movement
  • a second movement or auxiliary movement such as a chronograph
  • the first barrel 1 comprises a first drum 3 whose bottom 3a has at its outer periphery a first toothing 4 meshing with a wheel 6 of a first finishing gear associated with the first movement, a first spring 8 housed in the first drum 3 and a first barrel shaft 10 around which the first drum 3 is rotatably mounted, as will be described more precisely below.
  • the outer end of the first spring 8 is coupled to the inner surface of the wall of the first drum 3 in a traditional manner, for example by means of a flange, which can be slippery to avoid overvoltage of the spring in case excessive winding.
  • the inner end of the first spring 8 is coupled to a hook provided on a first plug of the first barrel shaft 10 in a conventional manner as well.
  • the second barrel 2 comprises a second drum 12, the bottom 12a of which has at its outer periphery a second toothing 14 meshing with a wheel 16 of a second finishing gear associated with the second movement, a second spring 18 housed in the second drum 12 and a second barrel shaft 20 around which the second drum 12 is rotatably mounted, as will be described more precisely below.
  • the outer end of the second spring 18 is coupled to the inner surface of the wall of the second drum 12 in a conventional manner, for example by means of a flange, which can be slippery to prevent an overvoltage of the spring in the event of excessive winding.
  • the inner end of the second spring 18 is coupled to a hook provided on a second plug of the second barrel shaft 20 in a conventional manner as well.
  • the hooks provided on the first and second barrel shafts 10, 20 are offset by 45 ° or 90 ° so as to prevent the turns of the first and second springs 8, 18 from intermingling.
  • the first and second barrels 1, 2 are mounted superimposed, the first and second barrel shafts 10, 20 being coaxial along an axis 22 and the interior of the first and second drums 3, 12 facing each other. More particularly, the housings defined by the drums 3 and 12 receiving the first and second springs 8, 18 respectively are arranged opposite one another, the bottoms 3a and 12a of the first and second drums 3, 12 respectively being located axially opposite to each other.
  • a single winding device for the first and second barrels 1, 2 comprising a single winding wheel 23 coaxial along the axis 22 with the first and second barrels 1, 2, the first barrel shaft 10, the second barrel shaft 20 and the winding wheel 23 being integral in rotation and arranged to be driven in rotation coaxially along the axis 22 to charge the first and second springs 8, 18 and fixed during the unwinding of the first and second springs 8, 18.
  • the winding wheel 23 is more specifically of the ratchet type and cooperates in a known manner with a pawl in order to be immobilized in the direction of unwinding of the springs.
  • the winding wheel is arranged to mesh with a crown wheel driven by a single winding stem or with a pinion of an oscillating weight for winding the two barrels together.
  • the barrel shaft closest to the winding wheel 23, that is to say here the second barrel shaft 20 has at its first end 20a directed towards the winding wheel 23, a sleeve 25 on which said winding wheel 23 is mounted integral in rotation, for example by driving. he is also possible to provide a free assembly with a square portion to ensure torque transmission.
  • first and second barrel shafts 10, 20 are mounted to be movable in rotation around a common shaft 24 coaxial along the axis 22, mounted on a frame.
  • the first drum 3 is integral with the common shaft 24 which is pivotally mounted on the frame.
  • the bottom 3a of the first drum has a central orifice 26 in which the common shaft 24 is driven out.
  • the two ends or pivots 24a, 24b of the common shaft 24 are guided in bearings or stones 28a, 28b provided respectively in the plate 30 and the barrel bridge (not shown) of the timepiece to allow the common shaft 24 to rotate around the axis 22 relative to the plate 30 and to the fixed barrel bridge.
  • the common shaft 24 has a flange 32 taken between the bottom 3a of the first drum 3 and the first end 10a of the first barrel shaft 10 directed towards said bottom 3a. This construction makes it possible to improve the guiding and the retention of the first barrel 1.
  • the first barrel shaft 10 At its second end 10b directed towards the second barrel shaft 20, the first barrel shaft 10 has a first shoulder 34 arranged to form a portion engaging in a corresponding recess 36 provided at the center of the second end 20b of the second barrel shaft.
  • barrel 20 directed towards the first barrel shaft 10.
  • a flat is provided at the ends 10b and 20b of the first and second barrel shaft 10, 20 respectively so that the latter are integral in rotation.
  • the dimensions of the ends 10b and 20b of the first and second barrel shaft 10, 20 respectively as well as the thicknesses of the first and second springs 8, 18 are chosen so that the first and second springs 8, 18 are separated from one another. other by a small axial gap, the covers of the first and second barrels 1, 2 being deleted. This interval prevents the turns of the first and second springs from intermingling.
  • the first barrel shaft 10 has a second shoulder 38 arranged to form, with the second end 20b of the second barrel shaft 20 partially resting on the first shoulder 34, a housing 40 corresponding substantially to the axial gap separating the first and second springs 8, 18.
  • a separating washer 42 is arranged in said gap, here the housing 40, held in guide around the first barrel shaft 10.
  • the washer 42 can also be mounted on one of the first and second drums 3 , 12 in the traditional way by clipping.
  • This separating washer 42 is preferably made of a material with a low coefficient of friction. It makes it possible to avoid friction between the first and second springs and to prevent their turns from intermingling. Its diameter is preferably at least equal to the diameter of the first and second drums 3, 12 in order to avoid friction also between the barrel drums.
  • the bottom 12a of the second drum 12 has a central orifice 43 in which a stone 44 is disposed, said stone 44 resting on a shoulder 45 provided at the first end 20a of the second barrel shaft 20 to allow the second drum 12 to rotate around the second barrel shaft 20.
  • a construction in which the second drum pivots without the stone 44 can also be envisioned.
  • the first barrel shaft and the second barrel shaft can form a single piece.
  • the common shaft could be mounted fixed between the plate and the barrel bridge, the common shaft then being arranged to freely rotate the first and second drums as well as their respective barrel shaft 10, 20.
  • the first barrel shaft and the second barrel shaft may form a single piece.
  • first barrel shaft and the second barrel shaft can form a single piece with the common shaft, said common shaft then being mounted between the plate and the barrel bridge in a pivoting manner along the axis. 22 for winding the springs, the common shaft then being arranged to freely rotate the first and second drums.
  • first barrel shaft and the second barrel shaft are mounted to pivot about their axis 22 for winding the springs
  • first and second barrel drums are mounted to be movable in rotation by means of bearings. balls provided on the outer periphery of at least one of the first and second drums.
  • the first barrel shaft and the second barrel shaft can advantageously form a single piece, mounted to pivot about the axis 22 for winding the springs.
  • a single bearing can be provided, for example, between the plate and the first barrel drum.
  • two bearings may be provided between the platen and each of the first and second barrel drums.
  • the ends of the peripheral walls of the first and second drums may be of complementary shapes to fit into each other while allowing the free rotation of the first and second drums with respect to each other. the other without friction.
  • the first and second drums together form a closed box containing the first and second springs 8, 18.
  • the arrangement of the two independent barrels according to the present invention allows the simultaneous winding of the two energy sources by a single common ratchet.
  • the rotation of the ratchet or of the winding wheel 23 in its only direction of rotation for winding causes the simultaneous rotation of the first and second barrel shafts 10, 20 and therefore the rotation of the inner end of the first and second springs 8, 18 to arm them simultaneously.
  • the ratchet or the winding wheel 23 being locked in rotation
  • the first and second barrel shafts 10, 20 are also locked in rotation which forces each of the first and second springs 8, 18 to relax by rotating their respective drum 3, 12 around their respective barrel shaft 10, 20.
  • the two barrels operate autonomously, each supplying energy to the movement associated with it.
  • the present invention makes it possible to optimize the size of two independent energy sources provided in the same timepiece. More particularly, the arrangement proposed by the present invention allows the two barrels to occupy a very compact volume, thanks to a single winding device, and by eliminating one of the ratchets, at least one barrel cover as well as the minus one of the pivot points which would have been present during a simple superposition of two barrels.
  • first barrel 1 being able to supply the auxiliary movement
  • second barrel 2 being able to supply the main movement.
  • the positions of the first and second drums 3, 12 could also be reversed, i.e. the first drum 3 could be mounted on the side of the barrel bridge and the ratchet and the second drum 12 on the side of the plate 30. .

Description

La présente invention concerne une pièce d'horlogerie comprenant au moins un premier mouvement entrainé par un premier barillet comprenant un premier tambour agencé pour coopérer avec un premier rouage de finissage du premier mouvement, un premier ressort logé dans le premier tambour et dont une extrémité extérieure est couplée au premier tambour et une extrémité intérieure est couplée à un premier arbre de barillet autour duquel le premier tambour est monté mobile en rotation, et un second mouvement entrainé par un second barillet comprenant un second tambour agencé pour coopérer avec un second rouage de finissage du second mouvement, un second ressort logé dans le second tambour dont une extrémité extérieure est couplée au second tambour et une extrémité intérieure est couplée à un second arbre de barillet autour duquel le second tambour est monté mobile en rotation.The present invention relates to a timepiece comprising at least a first movement driven by a first barrel comprising a first drum arranged to cooperate with a first finishing gear of the first movement, a first spring housed in the first drum and of which an outer end is coupled to the first drum and an inner end is coupled to a first barrel shaft around which the first drum is rotatably mounted, and a second movement driven by a second barrel comprising a second drum arranged to cooperate with a second finishing gear of the second movement, a second spring housed in the second drum, an outer end of which is coupled to the second drum and an inner end is coupled to a second barrel shaft around which the second drum is mounted movably in rotation.

Dans un mouvement horloger mécanique, le barillet est l'organe moteur qui fournit l'énergie au rouage de finissage dudit mouvement.In a mechanical watch movement, the barrel is the driving member which supplies energy to the cog for finishing said movement.

Lorsqu'une pièce d'horlogerie comprend un mouvement de base et un autre mécanisme ayant son propre mouvement, tel qu'une complication comme un chronographe, il est possible d'utiliser une seule source d'énergie pour alimenter les deux mouvements. Toutefois, la complication nécessitant au moins temporairement un surplus d'énergie pour fonctionner, la source d'énergie unique fournira ponctuellement moins de couple ce qui aura une influence chronométrique sur le mouvement de base.When a timepiece includes a base movement and another mechanism having its own movement, such as a complication such as a chronograph, it is possible to use a single power source to power both movements. However, the complication requiring at least temporarily a surplus of energy to operate, the single energy source will occasionally provide less torque, which will have a chronometric influence on the basic movement.

Pour éviter ce problème, il est connu d'utiliser deux organes moteurs indépendants, l'un étant dédié au mouvement de base et l'autre étant dédié à la complication, tels que le brevet CH697433B1 et le document WO02/077723A1 . Chaque organe moteur se présente généralement sous la forme d'un barillet comportant un tambour, un ressort moteur en spirale ou « ressort de barillet » logé dans le tambour, un arbre de barillet et un couvercle. Chaque organe moteur coopère avec son propre dispositif de remontage, tel qu'un rochet entraîné par la tige de remontoir (dans le cas d'un remontage manuel) ou une masse oscillante (dans le cas d'un remontage automatique).To avoid this problem, it is known to use two independent motor organs, one being dedicated to the basic movement and the other being dedicated to the complication, such as the patent. CH697433B1 and the document WO02 / 077723A1 . Each drive member is generally in the form of a barrel comprising a drum, a spiral drive spring or "barrel spring" housed in the drum, a barrel shaft and a cover. Each motor member cooperates with its own winding device, such as a ratchet driven by the winding stem (in the case of manual winding) or an oscillating weight (in the case of automatic winding).

Les deux organes moteurs demandent un volume important puisqu'il faut prévoir dans la pièce d'horlogerie le volume nécessaire pour deux barillets avec leurs propres mécanismes de pivotement, leurs propres systèmes de remontage et de fixation. Prévoir deux sources d'énergie indépendantes pour éviter toute influence chronométrique n'est donc pas toujours possible lorsque le volume disponible dans la pièce d'horlogerie est limité par ailleurs.The two driving members require a large volume since the necessary volume must be provided in the timepiece for two barrels with their own pivoting mechanisms, their own winding and fixing systems. Providing two independent energy sources to avoid any chronometric influence is therefore not always possible when the volume available in the timepiece is otherwise limited.

La présente invention vise à proposer une pièce d'horlogerie comprenant deux mouvements avec deux sources d'énergies indépendantes pour éviter toute influence chronométrique tout en occupant un volume restreint.The present invention aims to provide a timepiece comprising two movements with two independent energy sources to avoid any chronometric influence while occupying a small volume.

A cette fin est prévue une pièce d'horlogerie comprenant au moins un premier mouvement entrainé par un premier barillet comprenant un premier tambour agencé pour coopérer avec un premier rouage de finissage du premier mouvement, un premier arbre de barillet autour duquel le premier tambour est monté mobile en rotation, et un premier ressort logé dans le premier tambour et dont une extrémité extérieure est couplée audit premier tambour et une extrémité intérieure est couplée audit premier arbre de barillet, et un second mouvement entrainé par un second barillet comprenant un second tambour agencé pour coopérer avec un second rouage de finissage du second mouvement, un second arbre de barillet autour duquel le second tambour est monté mobile en rotation, et un second ressort logé dans le second tambour et dont une extrémité extérieure est couplée audit second tambour et une extrémité intérieure est couplée audit second arbre de barillet.To this end, a timepiece is provided comprising at least a first movement driven by a first barrel comprising a first drum arranged to cooperate with a first finishing gear of the first movement, a first barrel shaft around which the first drum is mounted. movable in rotation, and a first spring housed in the first drum and of which an outer end is coupled to said first drum and an inner end is coupled to said first barrel shaft, and a second movement driven by a second barrel comprising a second drum arranged for cooperate with a second finishing gear of the second movement, a second barrel shaft around which the second drum is mounted movably in rotation, and a second spring housed in the second drum and of which an outer end is coupled to said second drum and an inner end is coupled to said second barrel shaft.

Selon l'invention, lesdits premier et second barillets sont montés superposés, les premier et second arbres de barillet étant coaxiaux et l'intérieur des premier et second tambours se faisant face. De plus, il est prévu un seul dispositif d'armage des premier et second barillets comprenant une seule roue d'armage, tel qu'un rochet, coaxiale aux premier et second arbres de barillet, le premier arbre de barillet, le second arbre de barillet et la roue d'armage étant solidaires en rotation et agencés pour être entrainés en rotation coaxialement lors de l'armage des premier et second ressorts et fixes lors du désarmage des premier et second ressorts.According to the invention, said first and second barrels are mounted superimposed, the first and second barrel shafts being coaxial and the interior of the first and second drums facing each other. In addition, there is provided a single winding device for the first and second barrels comprising a single winding wheel, such as a ratchet, coaxial with the first and second barrel shafts, the first barrel shaft, the second barrel shaft and the winding wheel being integral in rotation and arranged to be rotated coaxially during the winding of the first and second springs and fixed during the unwinding of the first and second springs.

Ainsi, l'agencement des deux sources d'énergie proposé selon la présente invention est très compact et permet un gain de place important, notamment grâce à un unique dispositif d'armage évitant l'utilisation d'un second rochet et d'un second train de renvoi pour atteindre le mécanisme d'armage.Thus, the arrangement of the two energy sources proposed according to the present invention is very compact and allows a significant saving of space, in particular thanks to a single winding device avoiding the use of a second ratchet and a second. return train to reach the winding mechanism.

De préférence, les premier et second barillets peuvent être dépourvus de couvercle, les premier et second ressorts étant séparés l'un de l'autre par un intervalle. Cela permet d'économiser la place qu'occupent normalement les couvercles de barillet et donc de réduire davantage le volume occupé par les deux sources d'énergie.Preferably, the first and second barrels may be without a cover, the first and second springs being separated from each other by a gap. This saves the space normally occupied by the barrel lids and therefore further reduces the volume occupied by the two energy sources.

Avantageusement, une rondelle de séparation est disposée dans l'intervalle séparant les premier et second ressorts afin d'empêcher le mélange des premier et second ressort.Advantageously, a separating washer is disposed in the gap separating the first and second springs in order to prevent mixing of the first and second springs.

Selon un mode de réalisation, les premier et second arbres de barillet peuvent être montés mobiles en rotation autour d'un arbre commun monté sur un bâti. Cela permet d'économiser la place qu'occupe normalement au moins l'un des pivotements et donc de réduire davantage le volume occupé par les deux sources d'énergie.According to one embodiment, the first and second barrel shafts can be mounted to be movable in rotation around a common shaft mounted on a frame. This makes it possible to save the space normally occupied by at least one of the pivot points and therefore to further reduce the volume occupied by the two energy sources.

Avantageusement, l'arbre de barillet le plus proche de la roue d'armage peut présenter un manchon sur lequel ladite roue d'armage est montée solidaire en rotation.Advantageously, the barrel shaft closest to the winding wheel can have a sleeve on which said winding wheel is mounted integral in rotation.

Le premier arbre de barillet et le second arbre de barillet peuvent former une seule pièce.The first barrel shaft and the second barrel shaft may form a single piece.

Les parois périphériques des premier et second tambours peuvent être imbriquées de sorte que les premier et second tambours forment ensemble une boîte fermée contenant les premier et second ressorts.The peripheral walls of the first and second drums can be nested so that the first and second drums together form a closed box containing the first and second springs.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée suivante d'un mode de réalisation de l'invention, donnée à titre d'exemple non limitatif, et faite en référence à la figure 1 annexée représentant une vue en coupe axiale de deux barillets et d'une roue d'armage selon l'invention.Other characteristics and advantages of the present invention will become apparent on reading the following detailed description of an embodiment of the invention, given by way of non-limiting example, and made with reference to figure 1 appended showing a view in axial section of two barrels and a winding wheel according to the invention.

En référence à la figure 1, la pièce d'horlogerie selon l'invention comprend un premier mouvement, tel qu'un mouvement de base, entrainé par un premier organe moteur sous la forme d'un premier barillet 1, et un second mouvement ou mouvement auxiliaire, tel qu'un chronographe, entrainé par un second organe moteur sous la forme d'un second barillet 2.With reference to the figure 1 , the timepiece according to the invention comprises a first movement, such as a basic movement, driven by a first motor member in the form of a first barrel 1, and a second movement or auxiliary movement, such as a chronograph, driven by a second motor member in the form of a second barrel 2.

Le premier barillet 1 comprend un premier tambour 3 dont le fond 3a présente à sa périphérie extérieure une première denture 4 engrenant avec une roue 6 d'un premier rouage de finissage associé au premier mouvement, un premier ressort 8 logé dans le premier tambour 3 et un premier arbre de barillet 10 autour duquel le premier tambour 3 est monté mobile en rotation, comme cela sera décrit plus précisément ci-après. L'extrémité extérieure du premier ressort 8 est couplée à la surface interne de la paroi du premier tambour 3 d'une manière traditionnelle, par exemple à l'aide d'une bride, qui peut être glissante pour éviter une surtension du ressort en cas de remontage excessif. L'extrémité intérieure du premier ressort 8 est couplée à un crochet prévu sur une première bonde du premier arbre de barillet 10 d'une manière traditionnelle également.The first barrel 1 comprises a first drum 3 whose bottom 3a has at its outer periphery a first toothing 4 meshing with a wheel 6 of a first finishing gear associated with the first movement, a first spring 8 housed in the first drum 3 and a first barrel shaft 10 around which the first drum 3 is rotatably mounted, as will be described more precisely below. The outer end of the first spring 8 is coupled to the inner surface of the wall of the first drum 3 in a traditional manner, for example by means of a flange, which can be slippery to avoid overvoltage of the spring in case excessive winding. The inner end of the first spring 8 is coupled to a hook provided on a first plug of the first barrel shaft 10 in a conventional manner as well.

Le second barillet 2 comprend un second tambour 12 dont le fond 12a présente à sa périphérie extérieure une seconde denture 14 engrenant avec une roue 16 d'un second rouage de finissage associé au second mouvement, un second ressort 18 logé dans le second tambour 12 et un second arbre de barillet 20 autour duquel le second tambour 12 est monté mobile en rotation, comme cela sera décrit plus précisément ci-après. L'extrémité extérieure du second ressort 18 est couplée à la surface interne de la paroi du second tambour 12 d'une manière traditionnelle, par exemple à l'aide d'une bride, qui peut être glissante pour éviter une surtension du ressort en cas de remontage excessif. L'extrémité intérieure du second ressort 18 est couplée à un crochet prévu sur une seconde bonde du second arbre de barillet 20 d'une manière traditionnelle également. Avantageusement, les crochets prévus sur les premier et second arbres de barillet 10, 20 sont désaxés de 45° ou 90° de manière à empêcher que les spires des premier et second ressorts 8, 18 s'entremêlent.The second barrel 2 comprises a second drum 12, the bottom 12a of which has at its outer periphery a second toothing 14 meshing with a wheel 16 of a second finishing gear associated with the second movement, a second spring 18 housed in the second drum 12 and a second barrel shaft 20 around which the second drum 12 is rotatably mounted, as will be described more precisely below. The outer end of the second spring 18 is coupled to the inner surface of the wall of the second drum 12 in a conventional manner, for example by means of a flange, which can be slippery to prevent an overvoltage of the spring in the event of excessive winding. The inner end of the second spring 18 is coupled to a hook provided on a second plug of the second barrel shaft 20 in a conventional manner as well. Advantageously, the hooks provided on the first and second barrel shafts 10, 20 are offset by 45 ° or 90 ° so as to prevent the turns of the first and second springs 8, 18 from intermingling.

Conformément à l'invention, les premier et second barillets 1, 2 sont montés superposés, les premier et second arbres de barillet 10, 20 étant coaxiaux selon un axe 22 et l'intérieur des premier et second tambours 3, 12 se faisant face. Plus particulièrement, les logements définis par les tambours 3 et 12 recevant les premier et second ressorts 8, 18 respectivement sont disposés en regard l'un de l'autre, les fonds 3a et 12a des premier et second tambours 3, 12 respectivement étant situés axialement à l'opposé l'un de l'autre.According to the invention, the first and second barrels 1, 2 are mounted superimposed, the first and second barrel shafts 10, 20 being coaxial along an axis 22 and the interior of the first and second drums 3, 12 facing each other. More particularly, the housings defined by the drums 3 and 12 receiving the first and second springs 8, 18 respectively are arranged opposite one another, the bottoms 3a and 12a of the first and second drums 3, 12 respectively being located axially opposite to each other.

En outre, il est prévu un seul dispositif d'armage des premier et second barillets 1, 2 comprenant une unique roue d'armage 23 coaxiale selon l'axe 22 aux premier et second barillets 1, 2, le premier arbre de barillet 10, le second arbre de barillet 20 et la roue d'armage 23 étant solidaires en rotation et agencés pour être entrainés en rotation coaxialement selon l'axe 22 pour armer les premier et second ressorts 8, 18 et fixes lors du désarmage des premier et second ressorts 8, 18. La roue d'armage 23 est plus spécifiquement du type rochet et coopère de manière connue avec un cliquet pour être immobilisée dans le sens du désarmage des ressorts. La roue d'armage est agencée pour engrener avec une roue de couronne entraînée par une tige de remontoir unique ou avec un pignon d'une masse oscillante pour remonter les deux barillets ensemble.In addition, there is provided a single winding device for the first and second barrels 1, 2 comprising a single winding wheel 23 coaxial along the axis 22 with the first and second barrels 1, 2, the first barrel shaft 10, the second barrel shaft 20 and the winding wheel 23 being integral in rotation and arranged to be driven in rotation coaxially along the axis 22 to charge the first and second springs 8, 18 and fixed during the unwinding of the first and second springs 8, 18. The winding wheel 23 is more specifically of the ratchet type and cooperates in a known manner with a pawl in order to be immobilized in the direction of unwinding of the springs. The winding wheel is arranged to mesh with a crown wheel driven by a single winding stem or with a pinion of an oscillating weight for winding the two barrels together.

Avantageusement, l'arbre de barillet le plus proche de la roue d'armage 23, c'est-à-dire ici le second arbre de barillet 20, présente à sa première extrémité 20a dirigée vers la roue d'armage 23, un manchon 25 sur lequel ladite roue d'armage 23 est montée solidaire en rotation, par exemple par chassage. Il est également possible de prévoir un assemblage libre avec une portion carrée pour garantir la transmission du couple.Advantageously, the barrel shaft closest to the winding wheel 23, that is to say here the second barrel shaft 20, has at its first end 20a directed towards the winding wheel 23, a sleeve 25 on which said winding wheel 23 is mounted integral in rotation, for example by driving. he is also possible to provide a free assembly with a square portion to ensure torque transmission.

Dans la variante représentée, les premier et second arbres de barillet 10, 20 sont montés mobiles en rotation autour d'un arbre commun 24 coaxial selon l'axe 22, monté sur un bâti.In the variant shown, the first and second barrel shafts 10, 20 are mounted to be movable in rotation around a common shaft 24 coaxial along the axis 22, mounted on a frame.

Plus spécifiquement, dans la variante représentée ici, le premier tambour 3 est solidaire de l'arbre commun 24 qui est monté pivotant sur le bâti.More specifically, in the variant shown here, the first drum 3 is integral with the common shaft 24 which is pivotally mounted on the frame.

A cet effet, le fond 3a du premier tambour présente un orifice central 26 dans lequel l'arbre commun 24 est chassé. Les deux extrémités ou pivots 24a, 24b de l'arbre commun 24 sont guidés dans des paliers ou pierres 28a, 28b prévus respectivement dans la platine 30 et le pont de barillet (non représenté) de la pièce d'horlogerie pour permettre à l'arbre commun 24 de tourner autour de l'axe 22 par rapport à la platine 30 et au pont de barillet fixes. L'arbre commun 24 présente une collerette 32 prise entre le fond 3a du premier tambour 3 et la première extrémité 10a du premier arbre de barillet 10 dirigée vers ledit fond 3a. Cette construction permet d'améliorer le guidage et le maintien du premier barillet 1.For this purpose, the bottom 3a of the first drum has a central orifice 26 in which the common shaft 24 is driven out. The two ends or pivots 24a, 24b of the common shaft 24 are guided in bearings or stones 28a, 28b provided respectively in the plate 30 and the barrel bridge (not shown) of the timepiece to allow the common shaft 24 to rotate around the axis 22 relative to the plate 30 and to the fixed barrel bridge. The common shaft 24 has a flange 32 taken between the bottom 3a of the first drum 3 and the first end 10a of the first barrel shaft 10 directed towards said bottom 3a. This construction makes it possible to improve the guiding and the retention of the first barrel 1.

A sa seconde extrémité 10b dirigée vers le second arbre de barillet 20, le premier arbre de barillet 10 présente un premier épaulement 34 agencé pour former une portion s'engageant dans une creusure correspondante 36 prévue au centre de la seconde extrémité 20b du second arbre de barillet 20 dirigée vers le premier arbre de barillet 10. Un plat est prévu aux extrémités 10b et 20b du premier et second arbre de barillet 10, 20 respectivement afin que ces derniers soient solidaires en rotation.At its second end 10b directed towards the second barrel shaft 20, the first barrel shaft 10 has a first shoulder 34 arranged to form a portion engaging in a corresponding recess 36 provided at the center of the second end 20b of the second barrel shaft. barrel 20 directed towards the first barrel shaft 10. A flat is provided at the ends 10b and 20b of the first and second barrel shaft 10, 20 respectively so that the latter are integral in rotation.

Les dimensions des extrémités 10b et 20b du premier et second arbre de barillet 10, 20 respectivement ainsi que les épaisseurs des premier et second ressorts 8, 18 sont choisies pour que les premier et second ressorts 8, 18 soient séparés l'un de l'autre par un petit intervalle axial, les couvercles des premier et second barillets 1, 2 étant supprimés. Cet intervalle évite aux spires des premier et second ressorts de s'entremêler.The dimensions of the ends 10b and 20b of the first and second barrel shaft 10, 20 respectively as well as the thicknesses of the first and second springs 8, 18 are chosen so that the first and second springs 8, 18 are separated from one another. other by a small axial gap, the covers of the first and second barrels 1, 2 being deleted. This interval prevents the turns of the first and second springs from intermingling.

Avantageusement, le premier arbre de barillet 10 présente un second épaulement 38 agencé pour former, avec la seconde extrémité 20b du second arbre de barillet 20 reposant partiellement sur le premier épaulement 34, un logement 40 correspondant sensiblement à l'intervalle axial séparant les premier et second ressorts 8, 18. Une rondelle de séparation 42 est disposée dans ledit intervalle, ici le logement 40, maintenue en guidage autour du premier arbre de barillet 10. La rondelle 42 peut également être montée sur l'un des premier et second tambours 3, 12 de manière traditionnelle par clipsage. Cette rondelle de séparation 42 est réalisée de préférence dans une matière à faible coefficient de friction. Elle permet d'éviter les frottements entre les premier et second ressorts et d'empêcher que leurs spires s'entremêlent. Son diamètre est de préférence au moins égal au diamètre des premier et second tambours 3, 12 afin d'éviter les frottements également entre les tambours de barillet.Advantageously, the first barrel shaft 10 has a second shoulder 38 arranged to form, with the second end 20b of the second barrel shaft 20 partially resting on the first shoulder 34, a housing 40 corresponding substantially to the axial gap separating the first and second springs 8, 18. A separating washer 42 is arranged in said gap, here the housing 40, held in guide around the first barrel shaft 10. The washer 42 can also be mounted on one of the first and second drums 3 , 12 in the traditional way by clipping. This separating washer 42 is preferably made of a material with a low coefficient of friction. It makes it possible to avoid friction between the first and second springs and to prevent their turns from intermingling. Its diameter is preferably at least equal to the diameter of the first and second drums 3, 12 in order to avoid friction also between the barrel drums.

Le fond 12a du second tambour 12 présente un orifice central 43 dans lequel une pierre 44 est disposée, ladite pierre 44 reposant sur un épaulement 45 prévu à la première extrémité 20a du second arbre de barillet 20 pour permettre au second tambour 12 de tourner autour du second arbre de barillet 20. Une construction selon laquelle le second tambour pivote sans la pierre 44 peut également être envisagée.The bottom 12a of the second drum 12 has a central orifice 43 in which a stone 44 is disposed, said stone 44 resting on a shoulder 45 provided at the first end 20a of the second barrel shaft 20 to allow the second drum 12 to rotate around the second barrel shaft 20. A construction in which the second drum pivots without the stone 44 can also be envisioned.

Selon une variante non représentée, le premier arbre de barillet et le second arbre de barillet peuvent former une seule pièce.According to a variant not shown, the first barrel shaft and the second barrel shaft can form a single piece.

Selon une autre variante non représentée, l'arbre commun pourrait être monté fixe entre la platine et le pont de barillet, l'arbre commun étant alors agencé pour porter librement en rotation les premier et second tambours ainsi que leur arbre de barillet respectif 10, 20. Le premier arbre de barillet et le second arbre de barillet peuvent former une seule pièce.According to another variant not shown, the common shaft could be mounted fixed between the plate and the barrel bridge, the common shaft then being arranged to freely rotate the first and second drums as well as their respective barrel shaft 10, 20. The first barrel shaft and the second barrel shaft may form a single piece.

Selon une autre variante non représentée, le premier arbre de barillet et le second arbre de barillet peuvent former une seule pièce avec l'arbre commun, ledit arbre commun étant alors monté entre la platine et le pont de barillet de manière pivotante selon l'axe 22 pour l'armage des ressorts, l'arbre commun étant alors agencé pour porter librement en rotation les premier et second tambours.According to another variant not shown, the first barrel shaft and the second barrel shaft can form a single piece with the common shaft, said common shaft then being mounted between the plate and the barrel bridge in a pivoting manner along the axis. 22 for winding the springs, the common shaft then being arranged to freely rotate the first and second drums.

Selon une autre variante non représentée, le premier arbre de barillet et le second arbre de barillet sont montés pivotant autour de leur axe 22 pour l'armage des ressorts, et les premier et second tambours de barillet sont montés mobiles en rotation au moyen de roulements à billes prévus sur le pourtour extérieur d'au moins l'un des premier et second tambours. Dans ce cas, le premier arbre de barillet et le second arbre de barillet peuvent former avantageusement une seule pièce, montée pivotante autour de l'axe 22 pour l'armage des ressorts. Un seul roulement peut être prévu par exemple entre la platine et le premier tambour de barillet. Ou deux roulements peuvent être prévus entre la platine et chacun des premier et second tambours de barillet. Ce mode de réalisation permet d'économiser la place qu'occuperaient normalement les deux pivotements des barillets et donc de réduire davantage le volume occupé par les deux sources d'énergie.According to another variant not shown, the first barrel shaft and the second barrel shaft are mounted to pivot about their axis 22 for winding the springs, and the first and second barrel drums are mounted to be movable in rotation by means of bearings. balls provided on the outer periphery of at least one of the first and second drums. In this case, the first barrel shaft and the second barrel shaft can advantageously form a single piece, mounted to pivot about the axis 22 for winding the springs. A single bearing can be provided, for example, between the plate and the first barrel drum. Or two bearings may be provided between the platen and each of the first and second barrel drums. This embodiment makes it possible to save the space that the two pivoting barrels would normally occupy and therefore to further reduce the volume occupied by the two energy sources.

Selon une autre variante non représentée, les extrémités des parois périphériques des premier et second tambours peuvent être de formes complémentaires pour s'imbriquer l'une dans l'autre tout en permettant la libre rotation des premier et second tambours l'un par rapport à l'autre sans frottement. Ainsi, les premier et second tambours forment ensemble une boîte fermée contenant les premier et second ressorts 8, 18.According to another variant not shown, the ends of the peripheral walls of the first and second drums may be of complementary shapes to fit into each other while allowing the free rotation of the first and second drums with respect to each other. the other without friction. Thus, the first and second drums together form a closed box containing the first and second springs 8, 18.

L'agencement des deux barillets indépendants selon la présente invention permet le remontage simultané des deux sources d'énergie par un unique rochet commun. La rotation du rochet ou de la roue d'armage 23 dans son unique sens de rotation pour le remontage entraine la rotation simultanée des premier et second arbres de barillet 10, 20 et donc la rotation de l'extrémité intérieure des premier et second ressorts 8, 18 pour les armer simultanément. Lorsque la pièce d'horlogerie fonctionne, le rochet ou la roue d'armage 23 étant bloqué en rotation, les premier et second arbres de barillet 10, 20 sont également bloqués en rotation ce qui oblige chacun des premier et second ressorts 8, 18 à se détendre en entrainant en rotation leur tambour 3, 12 respectif autour de leur arbre de barillet 10, 20 respectif. Ainsi, les deux barillets fonctionnent de manière autonome, chacun alimentant en énergie le mouvement qui lui est associé.The arrangement of the two independent barrels according to the present invention allows the simultaneous winding of the two energy sources by a single common ratchet. The rotation of the ratchet or of the winding wheel 23 in its only direction of rotation for winding causes the simultaneous rotation of the first and second barrel shafts 10, 20 and therefore the rotation of the inner end of the first and second springs 8, 18 to arm them simultaneously. When the timepiece is in operation, the ratchet or the winding wheel 23 being locked in rotation, the first and second barrel shafts 10, 20 are also locked in rotation which forces each of the first and second springs 8, 18 to relax by rotating their respective drum 3, 12 around their respective barrel shaft 10, 20. Thus, the two barrels operate autonomously, each supplying energy to the movement associated with it.

La présente invention permet d'optimiser l'encombrement de deux sources d'énergie autonomes prévues dans une même pièce d'horlogerie. Plus particulièrement, l'agencement proposé par la présente invention permet aux deux barillets d'occuper un volume très compact, grâce à un dispositif de remontage unique, et en supprimant l'un des rochets, au moins un couvercle de barillet ainsi qu'au moins l'un des pivotements qui auraient été présents lors d'une simple superposition de deux barillets.The present invention makes it possible to optimize the size of two independent energy sources provided in the same timepiece. More particularly, the arrangement proposed by the present invention allows the two barrels to occupy a very compact volume, thanks to a single winding device, and by eliminating one of the ratchets, at least one barrel cover as well as the minus one of the pivot points which would have been present during a simple superposition of two barrels.

Il est bien évident que les fonctions des barillets peuvent être inversées, le premier barillet 1 pouvant alimenter le mouvement auxiliaire et le second barillet 2 pouvant alimenter le mouvement principal. Les positions des premier et second tambours 3, 12 pourraient aussi être inversées, c'est-à-dire que le premier tambour 3 pourrait être monté du côté du pont de barillet et du rochet et le second tambour 12 du côté de la platine 30.It is obvious that the functions of the barrels can be reversed, the first barrel 1 being able to supply the auxiliary movement and the second barrel 2 being able to supply the main movement. The positions of the first and second drums 3, 12 could also be reversed, i.e. the first drum 3 could be mounted on the side of the barrel bridge and the ratchet and the second drum 12 on the side of the plate 30. .

Claims (8)

  1. Timepiece comprising at least a first movement driven by a first barrel (1) comprising a first drum (3) arranged to cooperate with a first going train of the first movement, a first barrel arbour (10) about which the first drum (3) is mounted for rotational movement, and a first spring (8) housed in the first drum (3) and of which an outer end is coupled to said first drum (3) and an inner end is coupled to said first barrel arbour (10), and a second movement driven by a second barrel (2) comprising a second drum (12) arranged to cooperate with a second going train of the second movement, a second barrel arbour (20) about which the second drum (12) is mounted for rotational movement, and a second spring (18) housed in the second drum (12) and of which an outer end is coupled to said second drum (12) and an inner end is coupled to said second barrel arbour (20), characterised in that said first and second barrels (1, 2) are mounted in a superimposed manner, the first and second barrel arbours (10, 20) being coaxial and the insides of the first and second drums (3, 12) facing each other, and in that said timepiece comprises a single winding device for the first and second barrels (1, 2) comprising a winding wheel (23) coaxial to the first and second barrel arbours (10, 20), the first barrel arbour (10), the second barrel arbour (20) and the winding wheel (23) being rotationally fixed relative to each other and being arranged to be driven in rotation coaxially during winding of the first and second springs (8, 18) and to be fixed during unwinding of the first and second springs (8, 18).
  2. Timepiece as claimed in claim 1, characterised in that the first and second barrels (1, 2) have no cover, the first and second springs (8, 18) being separated from one another by a gap.
  3. Timepiece as claimed in claim 2, characterised in that a separating washer (42) is disposed in the gap separating the first and second springs (8, 18).
  4. Timepiece as claimed in any one of the preceding claims, characterised in that the first and second barrel arbours (10, 20) are mounted for rotational movement about a common shaft (24) mounted on a frame.
  5. Timepiece as claimed in any one of the preceding claims, characterised in that the barrel arbour (20) closest to the winding wheel (23) has a sleeve (25) on which said winding wheel (23) is mounted for conjoint rotation therewith.
  6. Timepiece as claimed in any one of claims 1 to 3, characterised in that the first barrel arbour and the second barrel arbour are mounted to pivot about their axis in order to wind the first and second springs respectively, and in that the first and second drums are mounted for rotational movement respectively about the first barrel arbour and the second barrel arbour by means of ball bearings provided on the outer periphery of at least one of the first and second drums.
  7. Timepiece as claimed in any one of the preceding claims, characterised in that the first barrel arbour (10) and the second barrel arbour (20) form a single piece.
  8. Timepiece as claimed in any one of the preceding claims, characterised in that the peripheral walls of the first and second drums (3, 12) fit one inside the other so that the first and second drums (3, 12) together form a closed casing containing the first and second springs (8, 18).
EP18205992.3A 2018-11-13 2018-11-13 Timepiece comprising two energy sources Active EP3654109B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18205992.3A EP3654109B1 (en) 2018-11-13 2018-11-13 Timepiece comprising two energy sources
PCT/IB2019/059656 WO2020100004A1 (en) 2018-11-13 2019-11-11 Timepiece comprising two power sources
CH00534/21A CH716804B1 (en) 2018-11-13 2019-11-11 Timepiece comprising two energy sources.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18205992.3A EP3654109B1 (en) 2018-11-13 2018-11-13 Timepiece comprising two energy sources

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EP3654109A1 EP3654109A1 (en) 2020-05-20
EP3654109B1 true EP3654109B1 (en) 2021-03-31

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EP (1) EP3654109B1 (en)
CH (1) CH716804B1 (en)
WO (1) WO2020100004A1 (en)

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EP0335054B1 (en) 1988-03-30 1991-06-12 Fabrique de montres DELANEAU SA Wrist watch for the simultaneous indication of time in two time zones
DE60143768D1 (en) * 2001-03-21 2011-02-10 Glashuetter Uhrenbetrieb Gmbh CLOCK WITH MECHANISM FOR THE TURNING OF A TIMING FUNCTION AND FOR THE SIMULTANEOUS VOLTAGE OF A FEED PUSHER
ATE390654T1 (en) 2002-02-01 2008-04-15 Tag Heuer Sa DEVICE WITH CLOCK MOVEMENT AND CHRONOGRAPH MODULE
CH697433B8 (en) * 2007-04-04 2008-12-31 D Horlogerie Minerva Sa Fab Timepiece with chronograph mechanism.
EP2060957A1 (en) * 2007-11-16 2009-05-20 ETA SA Manufacture Horlogère Suisse Motor element with springs for timepiece movement
CH699988A2 (en) * 2008-11-28 2010-05-31 Patek Philippe Sa Geneve Driving member for watch movement.
CH706214B1 (en) * 2012-03-09 2016-09-30 Sowind SA Barrel timepiece.
DE102016122936B4 (en) * 2016-11-28 2018-11-08 Lange Uhren Gmbh Barrel for a watch
JP7096267B2 (en) 2017-04-18 2022-07-05 パテック フィリップ ソシエテ アノニム ジュネーブ Clock mechanism
EP3502784B1 (en) 2017-12-22 2020-06-10 Patek Philippe SA Genève Timepiece resonator with flexible guide

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CH716804B1 (en) 2022-09-30
EP3654109A1 (en) 2020-05-20
WO2020100004A1 (en) 2020-05-22

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