EP2869134B1 - Barrel system for a timepiece - Google Patents

Barrel system for a timepiece Download PDF

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Publication number
EP2869134B1
EP2869134B1 EP13191466.5A EP13191466A EP2869134B1 EP 2869134 B1 EP2869134 B1 EP 2869134B1 EP 13191466 A EP13191466 A EP 13191466A EP 2869134 B1 EP2869134 B1 EP 2869134B1
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EP
European Patent Office
Prior art keywords
barrel
arbor
rotation
support
secured
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13191466.5A
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German (de)
French (fr)
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EP2869134A1 (en
Inventor
David Candaux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHRONOMETRIE FERDINAND BERTHOUD SA
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.)
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Publication date
Application filed by Chronometrie Ferdinand Berthoud SA filed Critical Chronometrie Ferdinand Berthoud SA
Priority to EP13191466.5A priority Critical patent/EP2869134B1/en
Priority to CN201480057029.1A priority patent/CN105637429B/en
Priority to PCT/EP2014/073729 priority patent/WO2015063338A2/en
Publication of EP2869134A1 publication Critical patent/EP2869134A1/en
Priority to HK16109040.3A priority patent/HK1221022A1/en
Application granted granted Critical
Publication of EP2869134B1 publication Critical patent/EP2869134B1/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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/16—Barrels; Arbors; Barrel axles
    • 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
    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots

Definitions

  • the present invention relates to the field of watchmaking. It relates, more particularly, to a barrel system for a timepiece.
  • a large number of barrel systems for timepieces are known from the state of the art, for example those described in documents. CH 431 389 , CH 333 241 , and EP 1,970,778 , US 3,129,556 , FR 2298815 , CH49 154 or FR 961 913 A .
  • all these barrel systems have only one mechanical output which can provide energy, and are not very aesthetic, which is important in high-end watches these days which are often of so-called “skeleton” shape, showing the movement through a transparent background and / or through a cut-out dial.
  • the patent CH 73 311 A further describes a Roskopf type barrel, the latter suffering the same defects as those of the abovementioned documents.
  • An object of the invention is therefore to propose a barrel system making it possible to transmit a rotational movement of the barrel to an additional mechanism of the timepiece movement and having an improved esthetics, which however remains simple to mount in a movement of watchmaking.
  • the barrel system further comprises a rotation transmission axis, integral in rotation at a first end with a toothed mobile for transmitting a rotation of said drum to an element of a clockwork movement, l the transmission axis being in the form of a barrel surrounding the support axis and being surrounded by the barrel axis, the rotation transmission axis being further arranged in kinematic connection in rotation at another end with the drum by means a non-circular part which interacts with a connecting element fixed to the bottom of the barrel, the connecting element comprising a non-circular opening of complementary shape to the non-circular part. Consequently, the axis of transmission of rotation, which makes it possible to transmit a movement of rotation to an additional mechanism of the timepiece, is integrated inside the axis of barrel, which makes it possible to obtain a extremely compact construction, and therefore aesthetic.
  • the barrel axis is adapted to be secured to a frame element of the timepiece, which allows a reliable and safe construction.
  • the thickness of the barrel is reduced.
  • the support axis is adapted to be secured to an element of the frame of the timepiece at one end, the barrel being held on the support axis by means of a holding element suitable for ensuring the axial retention of the barrel on the support axis. Therefore, a flying arrangement of the barrel in the movement is possible.
  • the holding element is a plate comprising a notch in engagement with the support axis, which allows simple assembly.
  • the plate can be arranged to be integral in rotation with the support axis, said plate comprising a finger arranged to mesh with a mobile "Maltese cross" of a system. the Maltese cross mobile being pivoted on said barrel bottom.
  • the finger of the locking system is therefore integrated with the holding element, reducing the number of separate parts required.
  • the plate is held in position by means of a false bridge mounted on the bottom of the barrel, directly or indirectly.
  • the element for connecting the axis of transmission of rotation to the drum is preferably located at least partially between the bottom of the barrel and the aforementioned false bridge.
  • the rotation transmission axis is in kinematic connection with a toothed mobile arranged to transmit the rotation of the rotation transmission axis to a power reserve indicator system, which makes it possible to transmit a rotation of the barrel to another mechanism of the timepiece movement, for example to a power reserve indicator mechanism, avoiding the use of a differential, as is generally the case.
  • the drum has no teeth, the barrel therefore being a so-called “smooth” barrel, and is adapted to drive in rotation a rocket mechanism by means of a chain, a wire, a strap or rope.
  • the invention further relates to a timepiece movement comprising a barrel system as defined above, in which the support axis is integral with said first frame element of said movement, the barrel axis being integral with a bridge , said bridge being integral with said first frame element.
  • a timepiece movement integrating the barrel system according to the invention is thus proposed.
  • the toothed mobile is located between said first frame member and said bridge, having a compact construction.
  • the figure 1 illustrates a barrel system 1 according to the invention.
  • the barrel comprises a drum 2, here having the shape of a smooth drum, particularly suitable for being surrounded by a chain of a rocket mechanism (not shown), in order to drive it in rotation.
  • a drum 2 comprising a peripheral toothing.
  • the drum 2 is closed on one side by a barrel bottom 4, thus forming a box which houses a motor spring (not shown).
  • the barrel system further comprises a stop system 3 located on the barrel bottom 4, comprising a movable "Maltese cross" 5 mounted to rotate freely on the barrel bottom 4 by means of a screw 22, which meshes with a finger 6 in order to limit the number of turns that the drum 2 of the barrel can make, as will be described in more detail below.
  • the barrel system comprises a bridge 7 and a toothed mobile 8, the functions of which will be described in more detail below.
  • the barrel system 1 comprises a support pin 9, fixed to a frame element of a clockwork movement (not illustrated) by its lower end (defined with reference to the figures), for example by means of screws 10.
  • the barrel axis 11 Surrounding the axis of support 9 is the barrel axis 11, taking the form of a tube or barrel, to which the inner end of the mainspring (not shown) is attached in a standard manner.
  • the barrel axis 11 is integral with the bridge 7 at least in rotation, the bridge being between the abovementioned frame element and the barrel 2, 4.
  • the barrel bottom 4 and, consequently the drum 2 are free in rotation about the barrel axis 11.
  • the barrel axis 11 can be secured in rotation with the bridge 7 for example by driving, or by interaction between non-circular shapes, for example one or more teeth, grooves, square, or any suitable polygonal shape. Thanks to the fixed barrel axis 11, the barrel 2, 4 is arranged to rotate in both directions of rotation, which makes it particularly suitable for being associated with a rocket mechanism.
  • the barrel system further comprises a barrel cover 16, integral with the drum 2 and free to rotate about the barrel axis 11, the barrel cover 16 pressing via at least one stone 17 driven into the barrel cover 16, against the bridge 7. This stone 17 is used to define the positioning of the barrel along the support axis 9 towards the bridge 7.
  • a rotation transmission axis 12 which is rotationally integral with the toothed mobile 8 at one end of the barrel axis 11, the toothed mobile 8 being located in the present example between the above-mentioned frame element and the bridge 7.
  • the other end of the rotation transmission axis 12 is in kinematic connection with the drum 2 of the barrel, by means of a non-circular part 13 which interacts with a connecting element 14 fixed to the bottom of the barrel 4.
  • the connecting element 14 has a non-circular opening corresponding to the shape of the non-circular part 13 of the axis of transmission of rotation 12.
  • the non-circular part circular 13 can be polygonal, ellipsoidal, or any other suitable shape.
  • the barrel 2, 4 is maintained in the assembled state by means of a plate 18, which carries the finger 6 of the stop mechanism 3.
  • the plate 18 serves as a holding element for holding the barrel 2, 4 on the axis support 9, and is engaged in a cutout 19 of the support axis 9. Indeed, the plate 18 holds the components of the barrel sandwiched between plate 18 and bridge 7.
  • Plate 18 comprises an opening 30 formed to allow the free end 31 of the support pin 9 to pass, as shown by the figure 4 during mounting of the plate 18 on the support axis 9.
  • the opening 30 further comprises a notch 32 formed to cooperate with the cutout 19 of the support axis 9.
  • the cutout 19 has a section non-circular transverse, for example square, the notch 32 having a corresponding shape so that, once engaged, the plate 18 is integral in rotation with the support axis 9.
  • the latter may include a protrusion 33 projecting from the plane of the plate 18 and having a first flat surface 34 forming an extension of a surface of the notch 32, preferably from the surface of the bottom of the notch 32
  • the first flat surface 34 is preferably perpendicular to the plane of the wafer 18, and cooperates with a second corresponding flat surface 35 which comprises the free end 31 of the support axis 9, the free end 31 of the axis support 9 and the protrusion 33 being arranged to form together a cylindrical shape, as shown in figure 5 in the assembled position.
  • the protrusion 33 and the first and second flat surfaces 34, 35 are not necessarily necessary, other means making it possible to ensure the positioning of the plate 18 being conceivable.
  • the plate 18 is held in place itself by a false bridge 20 comprising an opening 37 in which freely takes up the free end 31 of the support axis 9, which positions the plate axially and radially, while leaving a clearance sufficient for the false bridge 20 and the plate 18 to be able to move in rotation with respect to one another during the rotation of the barrel.
  • the opening 37 may further comprise one or more ruby-type rings 38 in order to more precisely guide the support axis 9 while limiting friction.
  • the false bridge 20 is located on the connecting element 14, these two elements being secured to the bottom of the barrel 4 by means of a screw-foot 21.
  • the stop system 3, seen on a larger scale at the figure 6 works as standard.
  • the finger 6 remains stationary, and the Maltese cross mobile 5 rotates around the support axis 9 on the bottom of the barrel 4 and interacts with the finger 6 at each turn of the barrel. Consequently, for each rotation of the barrel, the Maltese cross mobile 5 rotates one step around its screw 22, until the finger 6 abuts against the part of the Maltese cross mobile 5 which is devoid of notch , thus limiting the rotation of the barrel as is generally known.
  • the toothed mobile 8 is intended to transmit the rotation of the barrel to a power reserve indicator mechanism, and therefore the connection between the connecting element 14 and the rotation transmission axis 12 n does not need to be extremely solid, as the power reserve indicator mechanism requires little torque. Consequently, the non-circular part 13 of the axis of transmission of rotation 12 and that of the corresponding opening of the connecting element 14 can be constructed in a relatively fine manner, thus reducing the bulk due to these parts. But, by making these parts more solidly, it would also be possible for the toothed mobile 8 to supply energy to the watch movement.
  • the assembly of the barrel system 1 in a timepiece movement is carried out as follows.
  • the drum 2 - barrel bottom 4 - mainspring assembly is assembled to the barrel axis 11, and the cover 16 is secured to the drum 4.
  • the Maltese cross mobile 5 can be mounted at the bottom of barrel 4 at any stage.
  • the support axis 9 is secured to a frame element (not shown) by means of the screws 10.
  • the support axis 9 is inserted through an opening in the element of built, then is joined to it.
  • the drum 2 - barrel bottom 4 - motor spring - cover 16 assembly is fitted onto the rotation transmission axis 12, and the connecting element 14 is engaged with the non-circular part 13 of the axis of rotation transmission 12, and is placed in position against the barrel bottom 4.
  • the barrel axis 11 is secured in rotation with the bridge 7, for example by driving, or by the engagement of non-circular shapes corresponding.
  • the bridge 7 can be secured to the barrel axis 11 before mounting the drum unit 2 - barrel bottom 4 - motor spring - cover 16, the bridge 7 therefore being secured to a frame element after the fitting of the drum unit 2 - barrel bottom 4 - motor spring - cover 16 - bridge 7 on the rotation transmission axis 12.
  • the plate 18 is engaged in the cutout 19 of the support axis 9, the movable Maltese cross 5 and the finger being aligned correctly.
  • the false bridge 20 is put in place, and is joined to the bottom of the barrel 4 by means of the screw 21, thus joining together the connecting element 14 sandwiched between the bottom of the barrel 4 and the false bridge 20.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Transmission Devices (AREA)
  • Electromechanical Clocks (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

Domaine techniqueTechnical area

La présente invention se rapporte au domaine de l'horlogerie. Elle concerne, plus particulièrement, un système de barillet pour une pièce d'horlogerie.The present invention relates to the field of watchmaking. It relates, more particularly, to a barrel system for a timepiece.

Etat de la techniqueState of the art

On connaît de l'état de la technique un grand nombre de systèmes de barillet pour pièce d'horlogerie, par exemple ceux décrits dans les documents CH 431 389 , CH 333 241 , et EP 1 970 778 , US 3129 556 , FR 2298815 , CH49 154 ou encore FR 961 913 A . Toutefois, tous ces systèmes de barillet ne présentent qu'une seule sortie mécanique pouvant fournir de l'énergie, et sont peu esthétiques, ce qui est important dans les montres haut de gamme de nos jours qui sont souvent de forme dite « squelette », laissant voir le mouvement par un fond transparent et/ou par un cadran découpé. Le brevet CH 73 311 A décrit par ailleurs un barillet de type Roskopf, ce dernier souffrant les mêmes défauts que ceux des documents susvisés.A large number of barrel systems for timepieces are known from the state of the art, for example those described in documents. CH 431 389 , CH 333 241 , and EP 1,970,778 , US 3,129,556 , FR 2298815 , CH49 154 or FR 961 913 A . However, all these barrel systems have only one mechanical output which can provide energy, and are not very aesthetic, which is important in high-end watches these days which are often of so-called “skeleton” shape, showing the movement through a transparent background and / or through a cut-out dial. The patent CH 73 311 A further describes a Roskopf type barrel, the latter suffering the same defects as those of the abovementioned documents.

Un but de l'invention est par conséquent de proposer un système de barillet permettant de transmettre un mouvement de rotation du barillet à un mécanisme supplémentaire du mouvement d'horlogerie et ayant un esthétisme amélioré, qui reste toutefois simple à monter dans un mouvement d'horlogerie.An object of the invention is therefore to propose a barrel system making it possible to transmit a rotational movement of the barrel to an additional mechanism of the timepiece movement and having an improved esthetics, which however remains simple to mount in a movement of watchmaking.

Divulguation de l'inventionDisclosure of invention

De façon plus précise, l'invention concerne un système de barillet pour pièce d'horlogerie, comprenant:

  • un axe de support,
  • un barillet comprenant un tambour fermé par un fond de barillet, le barillet logeant un ressort moteur, dont une extrémité extérieure est en liaison avec le tambour, et
  • un axe de barillet en forme de canon situé dans le barillet et entourant l'axe de support, une extrémité intérieure dudit ressort moteur étant en liaison avec l'axe de barillet.
More specifically, the invention relates to a barrel system for a timepiece, comprising:
  • a support axis,
  • a barrel comprising a drum closed by a barrel bottom, the barrel housing a mainspring, one outer end of which is in connection with the drum, and
  • a barrel-shaped barrel axis located in the barrel and surrounding the support axis, an inner end of said mainspring being in connection with the barrel axis.

Selon l'invention, le système de barillet comprend, en outre, un axe de transmission de rotation, solidaire en rotation à une première extrémité avec un mobile denté pour transmettre une rotation dudit tambour à un élément d'un mouvement d'horlogerie, l'axe de transmission étant en forme de canon entourant l'axe de support et étant entouré par l'axe de barillet, l'axe de transmission de rotation étant en outre agencé en liaison cinématique en rotation à une autre extrémité avec le tambour au moyen d'une partie non circulaire qui interagit avec un élément de liaison fixé au fond de barillet, l'élément de liaison comportant une ouverture non circulaire de forme complémentaire de la partie non circulaire. Par conséquent, l'axe de transmission de rotation, qui permet de transmettre un mouvement de rotation à un mécanisme supplémentaire de la pièce d'horlogerie, est intégré à l'intérieur de l'axe de barillet, ce qui permet d'obtenir une construction extrêmement compacte, et donc esthétique.According to the invention, the barrel system further comprises a rotation transmission axis, integral in rotation at a first end with a toothed mobile for transmitting a rotation of said drum to an element of a clockwork movement, l the transmission axis being in the form of a barrel surrounding the support axis and being surrounded by the barrel axis, the rotation transmission axis being further arranged in kinematic connection in rotation at another end with the drum by means a non-circular part which interacts with a connecting element fixed to the bottom of the barrel, the connecting element comprising a non-circular opening of complementary shape to the non-circular part. Consequently, the axis of transmission of rotation, which makes it possible to transmit a movement of rotation to an additional mechanism of the timepiece, is integrated inside the axis of barrel, which makes it possible to obtain a extremely compact construction, and therefore aesthetic.

De préférence, l'axe de barillet est adapté pour être solidarisé avec un élément de bâti de la pièce d'horlogerie, ce qui permet une construction fiable et sûre. De plus, grâce à l'absence de pivot sur l'un des côtés du barillet, l'épaisseur du barillet est réduite.Preferably, the barrel axis is adapted to be secured to a frame element of the timepiece, which allows a reliable and safe construction. In addition, thanks to the absence of a pivot on one of the sides of the barrel, the thickness of the barrel is reduced.

Dans un mode de réalisation, l'axe de support est adapté pour être solidarisé avec un élément du bâti de la pièce d'horlogerie à une seule extrémité, le barillet étant maintenu sur l'axe de support au moyen d'un élément de maintien adapté pour assurer le maintien axial du barillet sur l'axe de support. Par conséquent, une disposition volante du barillet dans le mouvement est possible.In one embodiment, the support axis is adapted to be secured to an element of the frame of the timepiece at one end, the barrel being held on the support axis by means of a holding element suitable for ensuring the axial retention of the barrel on the support axis. Therefore, a flying arrangement of the barrel in the movement is possible.

De manière avantageuse, l'élément de maintien est une plaquette comprenant une encoche en engagement avec l'axe de support, qui permet un assemblage simple. De plus, la plaquette peut être agencée pour être solidaire en rotation avec l'axe de support, ladite plaquette comprenant un doigt agencé pour engrener avec un mobile "croix de Malte" d'un système d'arrêtage, le mobile croix de Malte étant pivoté sur ledit fond de barillet. Le doigt du système d'arrêtage est par conséquent intégré avec l'élément de maintien, réduisant le nombre de pièces distinctes nécessaires.Advantageously, the holding element is a plate comprising a notch in engagement with the support axis, which allows simple assembly. In addition, the plate can be arranged to be integral in rotation with the support axis, said plate comprising a finger arranged to mesh with a mobile "Maltese cross" of a system. the Maltese cross mobile being pivoted on said barrel bottom. The finger of the locking system is therefore integrated with the holding element, reducing the number of separate parts required.

De préférence, la plaquette est maintenue en position au moyen d'un faux pont monté sur le fond de barillet, de manière directe ou indirecte.Preferably, the plate is held in position by means of a false bridge mounted on the bottom of the barrel, directly or indirectly.

Dans un mode de réalisation, l'élément de liaison de l'axe de transmission de rotation au tambour est de préférence situé au moins partiellement entre le fond de barillet et le faux pont susmentionné.In one embodiment, the element for connecting the axis of transmission of rotation to the drum is preferably located at least partially between the bottom of the barrel and the aforementioned false bridge.

Dans un autre mode de réalisation, l'axe de transmission de rotation est en liaison cinématique avec un mobile denté agencé pour transmettre la rotation de l'axe de transmission de rotation à un système indicateur de réserve de marche, ce qui permet de transmettre une rotation du barillet à un autre mécanisme du mouvement d'horlogerie, par exemple à un mécanisme indicateur de réserve de marche, en évitant l'utilisation d'un différentiel, comme c'est généralement le cas.In another embodiment, the rotation transmission axis is in kinematic connection with a toothed mobile arranged to transmit the rotation of the rotation transmission axis to a power reserve indicator system, which makes it possible to transmit a rotation of the barrel to another mechanism of the timepiece movement, for example to a power reserve indicator mechanism, avoiding the use of a differential, as is generally the case.

Dans un mode de réalisation particulier, le tambour ne comporte pas de denture, le barillet étant par conséquent un barillet dit « lisse », et est adapté pour entrainer en rotation un mécanisme de fusée au moyen d'une chaîne, d'un fil, d'une courroie ou d'une corde.In a particular embodiment, the drum has no teeth, the barrel therefore being a so-called “smooth” barrel, and is adapted to drive in rotation a rocket mechanism by means of a chain, a wire, a strap or rope.

L'invention concerne en outre un mouvement d'horlogerie comprenant un système de barillet comme défini ci-dessus, dans lequel l'axe de support est solidaire dudit premier élément de bâti dudit mouvement, l'axe de barillet étant solidaire d'un pont, ledit pont étant solidaire dudit premier élément de bâti. Un mouvement d'horlogerie intégrant le système de barillet selon l'invention est ainsi proposé.The invention further relates to a timepiece movement comprising a barrel system as defined above, in which the support axis is integral with said first frame element of said movement, the barrel axis being integral with a bridge , said bridge being integral with said first frame element. A timepiece movement integrating the barrel system according to the invention is thus proposed.

De préférence, le mobile denté est situé entre ledit premier élément de bâti et ledit pont, présentant une construction compacte.Preferably, the toothed mobile is located between said first frame member and said bridge, having a compact construction.

Brève description des dessinsBrief description of the drawings

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

  • Fig. 1 est une vue en perspective d'un système de barillet selon l'invention ;
  • Fig. 2 est une vue en coupe transversale du système de barillet de la fig. 1 ;
  • Fig. 3 est une vue en perspective coupée du système de barillet de la fig. 1 ;
  • Fig. 4 est une vue en perspective de la plaquette de maintien lors de l'assemblage ;
  • Fig. 5 est une vue en perspective coupée de la plaquette de maintien dans sa position montée ;
  • Fig. 6 est une vue en perspective du mécanisme d'arrêtage du système de barillet de la fig. 1.
Other details of the invention will appear more clearly on reading the description which follows, made with reference to the appended drawing in which:
  • Fig. 1 is a perspective view of a barrel system according to the invention;
  • Fig. 2 is a cross-sectional view of the barrel system of the Fig. 1 ;
  • Fig. 3 is a perspective view cut from the barrel system of the Fig. 1 ;
  • Fig. 4 is a perspective view of the holding plate during assembly;
  • Fig. 5 is a perspective view cut away of the holding plate in its mounted position;
  • Fig. 6 is a perspective view of the locking mechanism of the barrel system of the Fig. 1 .

Mode de réalisation de l'inventionMode of carrying out the invention

La figure 1 illustre un système de barillet 1 selon l'invention. Le barillet comporte un tambour 2, présentant ici la forme d'un tambour lisse, convenant particulièrement pour être entouré par une chaîne d'un mécanisme de fusée (non illustrée), afin de l'entraîner en rotation. Mais, l'invention s'applique également à un tambour 2 comprenant une denture périphérique. Comme il est généralement connu, le tambour 2 est fermé d'un côté par un fond de barillet 4, formant ainsi une boîte qui loge un ressort moteur (non illustré). Le système de barillet comprend en outre un système d'arrêtage 3 situé sur le fond de barillet 4, comprenant un mobile "croix de Malte" 5 monté libre en rotation sur le fond de barillet 4 au moyen d'une vis 22, qui engrène avec un doigt 6 afin de limiter le nombre de tours que peut faire le tambour 2 du barillet, comme ce sera décrit plus en détails dans la suite. De plus, le système de barillet comprend un pont 7 et un mobile denté 8, dont les fonctions seront décrites plus en détails ci-dessous.The figure 1 illustrates a barrel system 1 according to the invention. The barrel comprises a drum 2, here having the shape of a smooth drum, particularly suitable for being surrounded by a chain of a rocket mechanism (not shown), in order to drive it in rotation. However, the invention also applies to a drum 2 comprising a peripheral toothing. As is generally known, the drum 2 is closed on one side by a barrel bottom 4, thus forming a box which houses a motor spring (not shown). The barrel system further comprises a stop system 3 located on the barrel bottom 4, comprising a movable "Maltese cross" 5 mounted to rotate freely on the barrel bottom 4 by means of a screw 22, which meshes with a finger 6 in order to limit the number of turns that the drum 2 of the barrel can make, as will be described in more detail below. In addition, the barrel system comprises a bridge 7 and a toothed mobile 8, the functions of which will be described in more detail below.

Comme il est plus clairement visible sur les figures 2 et 3, le système de barillet 1 comprend un axe de support 9, fixé à un élément de bâti d'un mouvement d'horlogerie (non illustré) par son extrémité inférieur (défini en référence aux figures), par exemple au moyen de vis 10. Entourant l'axe de support 9 se trouve l'axe de barillet 11, prenant la forme d'un tube ou canon, à laquelle l'extrémité intérieure du ressort moteur (non illustré) est attachée de manière standard. L'axe de barillet 11 est solidaire du pont 7 au moins en rotation, le pont se trouvant entre l'élément de bâti susmentionné et le barillet 2, 4. Le fond de barillet 4 et, par conséquent le tambour 2, sont libres en rotation autour de l'axe de barillet 11. L'axe de barillet 11 peut être solidarisé en rotation avec le pont 7 par exemple par chassage, ou par interaction entre des formes non circulaires, par exemple une ou plusieurs dents, des cannelures, des carrés, ou n'importe quelle forme polygonale appropriée. Grâce à l'axe de barillet 11 fixe, le barillet 2, 4 est agencé pour tourner dans les deux sens de rotation, qui le rend particulièrement adapté pour être associé à un mécanisme de fusée. Le système de barillet comprend, en outre, un couvercle de barillet 16, solidaire du tambour 2 et libre en rotation autour de l'axe de barillet 11, le couvercle de barillet 16 appuyant via au moins une pierre 17 chassée dans le couvercle de barillet 16, contre le pont 7. Cette pierre 17 sert à définir le positionnement du barillet le long de l'axe de support 9 vers le pont 7.As it is more clearly visible on figures 2 and 3 , the barrel system 1 comprises a support pin 9, fixed to a frame element of a clockwork movement (not illustrated) by its lower end (defined with reference to the figures), for example by means of screws 10. Surrounding the axis of support 9 is the barrel axis 11, taking the form of a tube or barrel, to which the inner end of the mainspring (not shown) is attached in a standard manner. The barrel axis 11 is integral with the bridge 7 at least in rotation, the bridge being between the abovementioned frame element and the barrel 2, 4. The barrel bottom 4 and, consequently the drum 2, are free in rotation about the barrel axis 11. The barrel axis 11 can be secured in rotation with the bridge 7 for example by driving, or by interaction between non-circular shapes, for example one or more teeth, grooves, square, or any suitable polygonal shape. Thanks to the fixed barrel axis 11, the barrel 2, 4 is arranged to rotate in both directions of rotation, which makes it particularly suitable for being associated with a rocket mechanism. The barrel system further comprises a barrel cover 16, integral with the drum 2 and free to rotate about the barrel axis 11, the barrel cover 16 pressing via at least one stone 17 driven into the barrel cover 16, against the bridge 7. This stone 17 is used to define the positioning of the barrel along the support axis 9 towards the bridge 7.

Situé entre l'axe de support 9 et l'axe de barillet 11, se trouve un axe de transmission de rotation 12, qui est solidaire en rotation du mobile denté 8 à une extrémité de l'axe de barillet 11, le mobile denté 8 étant situé dans le présent exemple entre l'élément de bâti susmentionné et le pont 7. L'autre extrémité de l'axe de transmission de rotation 12 est en liaison cinématique avec le tambour 2 du barillet, au moyen d'une partie non circulaire 13 qui interagit avec un élément de liaison 14 fixé au fond de barillet 4. L'élément de liaison 14 comporte une ouverture non circulaire correspondant à la forme de la partie non circulaire 13 de l'axe de transmission de rotation 12. La partie non circulaire 13 peut être polygonale, ellipsoïdal, ou de n'importe quelle autre forme convenable.Located between the support axis 9 and the barrel axis 11, there is a rotation transmission axis 12, which is rotationally integral with the toothed mobile 8 at one end of the barrel axis 11, the toothed mobile 8 being located in the present example between the above-mentioned frame element and the bridge 7. The other end of the rotation transmission axis 12 is in kinematic connection with the drum 2 of the barrel, by means of a non-circular part 13 which interacts with a connecting element 14 fixed to the bottom of the barrel 4. The connecting element 14 has a non-circular opening corresponding to the shape of the non-circular part 13 of the axis of transmission of rotation 12. The non-circular part circular 13 can be polygonal, ellipsoidal, or any other suitable shape.

Le barillet 2, 4 est maintenu en état assemblé au moyen d'une plaquette 18, qui porte le doigt 6 du mécanisme d'arrêtage 3. La plaquette 18 sert d'élément de maintien pour maintenir le barillet 2, 4 sur l'axe de support 9, et est engagée dans une découpe 19 de l'axe de support 9. En effet, la plaquette 18 tient les composants du barillet en sandwich entre la plaquette 18 et le pont 7. La plaquette 18 comprend une ouverture 30 formée pour laisser passer l'extrémité libre 31 de l'axe de support 9, comme montré par la figure 4 lors du montage de la plaque 18 sur l'axe de support 9. L'ouverture 30 comprend en outre une encoche 32 formée pour coopérer avec la découpe 19 de l'axe de support 9. De manière avantageuse, la découpe 19 présente une section transversale non circulaire, par exemple carrée, l'encoche 32 présentant une forme correspondante afin que, une fois engagée, la plaquette 18 soit solidaire en rotation avec l'axe de support 9. Afin de contribuer à assurer le positionnement de la plaquette 18, cette dernière peut comprendre une protubérance 33 s'étendant en saillie du plan de la plaquette 18 et présentant une première surface plate 34 formant une extension d'une surface de l'encoche 32, de préférence de la surface du fond de l'encoche 32. La première surface plate 34 est de préférence perpendiculaire au plan de la plaquette 18, et coopère avec une seconde surface plate 35 correspondante que comporte l'extrémité libre 31 de l'axe de support 9, l'extrémité libre 31 de l'axe de support 9 et la protubérance 33 étant agencées pour former ensemble une forme cylindrique, comme montré à la figure 5 dans la position assemblée. Toutefois, la protubérance 33 et les première et seconde surfaces plates 34, 35 ne sont pas forcément nécessaires, d'autres moyens permettant d'assurer le positionnement de la plaquette 18 étant envisageables.The barrel 2, 4 is maintained in the assembled state by means of a plate 18, which carries the finger 6 of the stop mechanism 3. The plate 18 serves as a holding element for holding the barrel 2, 4 on the axis support 9, and is engaged in a cutout 19 of the support axis 9. Indeed, the plate 18 holds the components of the barrel sandwiched between plate 18 and bridge 7. Plate 18 comprises an opening 30 formed to allow the free end 31 of the support pin 9 to pass, as shown by the figure 4 during mounting of the plate 18 on the support axis 9. The opening 30 further comprises a notch 32 formed to cooperate with the cutout 19 of the support axis 9. Advantageously, the cutout 19 has a section non-circular transverse, for example square, the notch 32 having a corresponding shape so that, once engaged, the plate 18 is integral in rotation with the support axis 9. In order to contribute to ensuring the positioning of the plate 18, the latter may include a protrusion 33 projecting from the plane of the plate 18 and having a first flat surface 34 forming an extension of a surface of the notch 32, preferably from the surface of the bottom of the notch 32 The first flat surface 34 is preferably perpendicular to the plane of the wafer 18, and cooperates with a second corresponding flat surface 35 which comprises the free end 31 of the support axis 9, the free end 31 of the axis support 9 and the protrusion 33 being arranged to form together a cylindrical shape, as shown in figure 5 in the assembled position. However, the protrusion 33 and the first and second flat surfaces 34, 35 are not necessarily necessary, other means making it possible to ensure the positioning of the plate 18 being conceivable.

La plaquette 18 est maintenue en place elle-même par un faux pont 20 comprenant une ouverture 37 dans laquelle prend place librement l'extrémité libre 31 de l'axe de support 9, qui positionne la plaquette axialement et radialement, tout en laissant un jeu suffisant pour que le faux pont 20 et la plaquette 18 puissent se déplacer en rotation l'un par rapport à l'autre lors de la rotation du barillet. L'ouverture 37 peut comprendre en outre une ou plusieurs bagues de type rubis 38 afin de guider plus précisément l'axe de support 9 tout en limitant les frottements. Le faux pont 20 se situe sur l'élément de liaison 14, ces deux éléments étant solidarisés au fond de barillet 4 au moyen de pied-vis 21.The plate 18 is held in place itself by a false bridge 20 comprising an opening 37 in which freely takes up the free end 31 of the support axis 9, which positions the plate axially and radially, while leaving a clearance sufficient for the false bridge 20 and the plate 18 to be able to move in rotation with respect to one another during the rotation of the barrel. The opening 37 may further comprise one or more ruby-type rings 38 in order to more precisely guide the support axis 9 while limiting friction. The false bridge 20 is located on the connecting element 14, these two elements being secured to the bottom of the barrel 4 by means of a screw-foot 21.

Le système d'arrêtage 3, vu à une échelle plus grande à la figure 6, fonctionne de manière standard. Le doigt 6 reste stationnaire, et le mobile croix de Malte 5 tourne autour de l'axe de support 9 sur le fond de barillet 4 et interagit avec le doigt 6 à chaque tour du barillet. Par conséquent, pour chaque rotation du barillet, le mobile croix de Malte 5 tourne d'un pas autour de sa vis 22, jusqu'à ce que le doigt 6 bute contre la partie du mobile croix de Malte 5 qui est dépourvue d'encoche, limitant ainsi la rotation du barillet comme c'est généralement connu.The stop system 3, seen on a larger scale at the figure 6 , works as standard. The finger 6 remains stationary, and the Maltese cross mobile 5 rotates around the support axis 9 on the bottom of the barrel 4 and interacts with the finger 6 at each turn of the barrel. Consequently, for each rotation of the barrel, the Maltese cross mobile 5 rotates one step around its screw 22, until the finger 6 abuts against the part of the Maltese cross mobile 5 which is devoid of notch , thus limiting the rotation of the barrel as is generally known.

Dans le cas d'espèce, le mobile denté 8 est destiné à transmettre la rotation du barillet à un mécanisme indicateur de réserve de marche, et par conséquent la liaison entre l'élément de liaison 14 et l'axe de transmission de rotation 12 n'a pas besoin d'être extrêmement solide, car le mécanisme indicateur de réserve de marche ne nécessite que peu de couple. Par conséquent, la partie non circulaire 13 de l'axe de transmission de rotation 12 et celle de l'ouverture correspondante de l'élément de liaison 14 peuvent être construites de manière relativement fine, réduisant ainsi l'encombrement dû à ces parties. Mais, en faisant ces parties de manière plus solide, il serait également possible que le mobile denté 8 fournisse de l'énergie au mouvement d'horlogerie.In this case, the toothed mobile 8 is intended to transmit the rotation of the barrel to a power reserve indicator mechanism, and therefore the connection between the connecting element 14 and the rotation transmission axis 12 n does not need to be extremely solid, as the power reserve indicator mechanism requires little torque. Consequently, the non-circular part 13 of the axis of transmission of rotation 12 and that of the corresponding opening of the connecting element 14 can be constructed in a relatively fine manner, thus reducing the bulk due to these parts. But, by making these parts more solidly, it would also be possible for the toothed mobile 8 to supply energy to the watch movement.

Grace à cette construction du système de barillet, un barillet quasi-complètement volant est réalisé, qui permet de transmettre un mouvement de rotation à un mécanisme indicateur de réserve de marche ou à tout autre mécanisme du mouvement d'horlogerie, sans nuire à l'effet volant, présentant ainsi un aspect esthétique amélioré.Thanks to this construction of the barrel system, an almost completely flying barrel is produced, which makes it possible to transmit a rotational movement to a power reserve indicator mechanism or to any other mechanism of the clock movement, without harming the flying effect, thus presenting an improved aesthetic appearance.

Le montage du système de barillet 1 dans un mouvement d'horlogerie s'effectue comme suit.The assembly of the barrel system 1 in a timepiece movement is carried out as follows.

En premier lieu, l'ensemble tambour 2 - fond de barillet 4 - ressort moteur est assemblé à l'axe de barillet 11, et le couvercle 16 est solidarisé avec le tambour 4. Le mobile croix de Malte 5 peut être monté au fond de barillet 4 à n'importe quel stade.Firstly, the drum 2 - barrel bottom 4 - mainspring assembly is assembled to the barrel axis 11, and the cover 16 is secured to the drum 4. The Maltese cross mobile 5 can be mounted at the bottom of barrel 4 at any stage.

Puis, l'axe de support 9 est solidarisé avec un élément de bâti (non représenté) au moyen des vis 10. Dans l'exemple représenté, l'axe de support 9 est inséré au travers d'une ouverture dans l'élément de bâti, puis y est solidarisé.Then, the support axis 9 is secured to a frame element (not shown) by means of the screws 10. In the example shown, the support axis 9 is inserted through an opening in the element of built, then is joined to it.

Puis, l'axe de transmission de rotation 12 et le mobile denté 8 sont emmanchés sur l'axe de support 9, le pont 7 étant subséquemment monté à un élément de bâti du mouvement.Then, the rotation transmission axis 12 and the toothed mobile 8 are fitted on the support axis 9, the bridge 7 being subsequently mounted to a frame element of the movement.

Ensuite, l'ensemble tambour 2 - fond de barillet 4 - ressort moteur - couvercle 16 est emmanché sur l'axe de transmission de rotation 12, et l'élément de liaison 14 est engagé avec la partie non circulaire 13 de l'axe de transmission de rotation 12, et est placé en position contre le fond de barillet 4. Pendant cette étape, l'axe de barillet 11 est solidarisé en rotation avec le pont 7, par exemple par chassage, ou par l'engagement de formes non circulaires correspondantes. Alternativement, le pont 7 peut être solidarisé avec l'axe de barillet 11 avant le montage de l'ensemble tambour 2 - fond de barillet 4 - ressort moteur - couvercle 16, le pont 7 étant par conséquent solidarisé avec un élément de bâti après l'emmanchement de l'ensemble tambour 2 - fond de barillet 4 - ressort moteur - couvercle 16 - pont 7 sur l'axe de transmission de rotation 12.Then, the drum 2 - barrel bottom 4 - motor spring - cover 16 assembly is fitted onto the rotation transmission axis 12, and the connecting element 14 is engaged with the non-circular part 13 of the axis of rotation transmission 12, and is placed in position against the barrel bottom 4. During this step, the barrel axis 11 is secured in rotation with the bridge 7, for example by driving, or by the engagement of non-circular shapes corresponding. Alternatively, the bridge 7 can be secured to the barrel axis 11 before mounting the drum unit 2 - barrel bottom 4 - motor spring - cover 16, the bridge 7 therefore being secured to a frame element after the fitting of the drum unit 2 - barrel bottom 4 - motor spring - cover 16 - bridge 7 on the rotation transmission axis 12.

Subséquemment, la plaquette 18 est engagée dans la découpe 19 de l'axe de support 9, le mobile croix de Malte 5 et le doigt étant alignés de manière correcte. Puis, le faux pont 20 est mis en place, et est solidarisé au fond de barillet 4 au moyen de la vis 21, solidarisant ainsi l'élément de liaison 14 en sandwich entre le fond de barillet 4 et le faux pont 20.Subsequently, the plate 18 is engaged in the cutout 19 of the support axis 9, the movable Maltese cross 5 and the finger being aligned correctly. Then, the false bridge 20 is put in place, and is joined to the bottom of the barrel 4 by means of the screw 21, thus joining together the connecting element 14 sandwiched between the bottom of the barrel 4 and the false bridge 20.

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 système de barillet 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 barrel system can be modified by a person skilled in the art without departing from the scope of the invention defined by the appended claims.

Claims (11)

  1. A barrel system (1) for a timepiece, comprising:
    - a support arbor (9);
    - a barrel (2, 4) comprising a drum (2) closed by a barrel bottom (4), the barrel housing a drive spring, an outer end of the drive spring being connected to the drum (2);
    - a barrel arbor (11) in the form of a cannon situated in the barrel (2, 4) and surrounding the support arbor (9), an inner end of said drive spring being connected to the barrel arbor (11);
    wherein said barrel system (1) further comprises a rotation-transmission shaft (12) distinct from the support arbor and the barrel arbor and rotationally secured to a first end with a toothed wheel (8) so as to rotate therewith for transmitting a rotation movement from said drum (2) to a timepiece-movement element, the rotation-transmission shaft (12) being in the form of a cannon surrounding the support arbor (9) and being surrounded by the barrel arbor (11), the rotation-transmission shaft (12) further being arranged in rotational kinematic connection at another end with the drum (2) by means of a non-circular part (13) that interacts with a connecting element (14) fixed to the barrel bottom (4), the connecting element (14) comprising a non-circular opening with a shape complementary to the non-circular part (13).
  2. A barrel system (1) according to the preceding claim, wherein the barrel arbor (11) is suitable for being secured to a frame element of the timepiece.
  3. A barrel system (1) according to either of the preceding claims, wherein the support arbor (9) is suitable for being secured to a frame element of the timepiece at only one end, the barrel (2, 4) being held on the support arbor (9) by means of a holding element (18) suitable for ensuring the axial holding of the barrel (2, 4) on the support arbor (9).
  4. A barrel system (1) according to the preceding claim, wherein the holding element (18) is a plate (18) comprising a recess in engagement with the support arbor (8).
  5. A barrel system (1) according to the preceding claim, wherein said plate (18) is arranged so as to be secured to the support arbor (9) so as to rotate therewith, said plate (18) comprising a stud (6) arranged so as to mesh with a Maltese-cross wheel (5) of a stopwork system (3), the Maltese cross (5) being pivoted on said barrel bottom (4).
  6. A barrel system (1) according to either claim 4 or claim 5, wherein said plate (18) is held in position by means of a false bridge (20) mounted on the barrel bottom (4).
  7. A barrel system (1) according to claim 6, wherein the connecting element (14) is situated at least partially between the barrel bottom (4) and the false bridge (20).
  8. A barrel system (1) according to any of the preceding claims, wherein the rotation-transmission shaft (9) is in kinematic connection with a toothed wheel (8) arranged to transmit the rotation of the rotation-transmission shaft (12) to a power-reserve indicator system.
  9. A barrel system (1) according to any of the preceding claims, wherein said drum (2) does not have any teeth, and is suitable for rotating a fusee mechanism by means of a chain, wire, belt or cord.
  10. A timepiece movement comprising a barrel system, (1) according to any of the preceding claims, wherein the support arbor (9) is secured to said first frame element of said movement, the barrel arbor being secured to a bridge (7), said bridge (7) being secured to said first frame element.
  11. A movement according to the preceding claim, comprising a barrel system (1) according to claim 8, wherein said toothed wheel (9) is situated between said first frame element and said bridge (7).
EP13191466.5A 2013-11-04 2013-11-04 Barrel system for a timepiece Active EP2869134B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP13191466.5A EP2869134B1 (en) 2013-11-04 2013-11-04 Barrel system for a timepiece
CN201480057029.1A CN105637429B (en) 2013-11-04 2014-11-04 Going barrel system for timepiece
PCT/EP2014/073729 WO2015063338A2 (en) 2013-11-04 2014-11-04 Barrel system for a timepiece
HK16109040.3A HK1221022A1 (en) 2013-11-04 2016-07-28 Barrel system for a timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13191466.5A EP2869134B1 (en) 2013-11-04 2013-11-04 Barrel system for a timepiece

Publications (2)

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EP2869134A1 EP2869134A1 (en) 2015-05-06
EP2869134B1 true EP2869134B1 (en) 2020-02-26

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Application Number Title Priority Date Filing Date
EP13191466.5A Active EP2869134B1 (en) 2013-11-04 2013-11-04 Barrel system for a timepiece

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EP (1) EP2869134B1 (en)
CN (1) CN105637429B (en)
HK (1) HK1221022A1 (en)
WO (1) WO2015063338A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH713389B1 (en) * 2017-01-27 2020-11-30 Richemont Int Sa System for connecting a shaft to a part.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH73311A (en) * 1916-05-04 1916-09-16 E Huguenin Advanced Roskopf Barrel

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR961913A (en) * 1950-05-25
CH49154A (en) * 1909-11-19 1911-01-16 Georges Favre Jacot & Cie Improvement in watch movements with barrel without cover
CH262840A (en) * 1947-07-18 1949-07-31 Co Cortebert Watch Barrel for watch movement.
CH333241A (en) 1956-10-12 1958-10-15 Brac S A Watch movement
CH343891A (en) * 1957-12-20 1959-12-31 Revue Fabriques D Horlogerie T Watch engine
US3129556A (en) * 1961-03-02 1964-04-21 Derby S A Watch movement
CH431389A (en) 1964-06-18 1966-10-15 D Ebauches De Peseux S A Fab Watch movement
CH596590B5 (en) * 1975-01-23 1978-03-15 Pforzheimer Uhren Rohwerke
CH702035B1 (en) * 2006-10-20 2011-04-29 Eterna Sa Fabrique D Horlogerie Timepiece.
ATE443282T1 (en) 2007-03-13 2009-10-15 Montres Breguet Sa WATCH WITH POWER RESERVE DISPLAY

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH73311A (en) * 1916-05-04 1916-09-16 E Huguenin Advanced Roskopf Barrel

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CN105637429A (en) 2016-06-01
WO2015063338A2 (en) 2015-05-07
HK1221022A1 (en) 2017-05-19
CN105637429B (en) 2018-01-16
EP2869134A1 (en) 2015-05-06
WO2015063338A3 (en) 2015-11-12

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