EP2823364A1 - Barrel - Google Patents

Barrel

Info

Publication number
EP2823364A1
EP2823364A1 EP13710338.8A EP13710338A EP2823364A1 EP 2823364 A1 EP2823364 A1 EP 2823364A1 EP 13710338 A EP13710338 A EP 13710338A EP 2823364 A1 EP2823364 A1 EP 2823364A1
Authority
EP
European Patent Office
Prior art keywords
drum
hub
barrel
timepiece
barrel according
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.)
Granted
Application number
EP13710338.8A
Other languages
German (de)
French (fr)
Other versions
EP2823364B1 (en
Inventor
Stéphane OES
Laurent CALAME
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.)
Sowind SA
Original Assignee
Sowind SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sowind SA filed Critical Sowind SA
Publication of EP2823364A1 publication Critical patent/EP2823364A1/en
Application granted granted Critical
Publication of EP2823364B1 publication Critical patent/EP2823364B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • 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
    • G04B1/10—Driving mechanisms with mainspring
    • 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
    • G04B1/16—Barrels; Arbors; Barrel axles
    • G04B1/165—Spring cylinder with friction transmission to the gearing (especially for Roskopf clockworks)
    • 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
    • G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor
    • 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
    • G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor
    • G04B1/185—Friction clutch between spring and spring cylinder
    • 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
    • G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor
    • G04B1/20—Protecting arrangements against rupture or overwinding of the mainspring located in the barrel or attached to the barrel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49579—Watch or clock making

Definitions

  • the present invention relates to the field of mechanical watchmaking.
  • a cylinder comprising:
  • first tubular hub integral with a first cover and housed at least partially in the first compartment
  • Each compartment contains a spirally wound spring, a first inner end cooperates with the first and second hub respectively and a second end cooperates with the drum.
  • the energy is generally provided by springs spirally wound and housed in barrels.
  • it is sought to obtain the maximum energy in a given volume to optimize the transmitted torque and the power reserve, that is to say the maximum time during which the cylinder can operate the movement under conditions correct.
  • These parameters are theoretically improved by increasing the height of the turns (that is to say the dimension perpendicular to the plane of the spiral) and decreasing the thickness of the blade forming the spiral allowing a greater number of turns for a barrel of constant diameter.
  • the spring manufacturing constraints quickly limit the possibilities of increasing the height or reducing the thickness.
  • the present invention aims to provide an alternative and advantageous construction, to improve the energy performance of a cylinder in a limited space.
  • the invention relates to a barrel and a timepiece as defined in the claims.
  • FIG. 1 is a sectional view of a first embodiment of the invention
  • FIG. 2 provides an exploded view of this same first embodiment
  • FIG. 1 a cylinder 10 of timepiece illustrating the invention.
  • This barrel 10 comprises a drum 14 which defines two compartments 16a, 16b superimposed with reference to the geometric axis of the barrel and each containing a spring 18a, 18b wound in a spiral.
  • the barrel comprises a first and a second tubular hubs, separated.
  • the first hub 22a is secured to a first cover 24a.
  • the first hub 22a is housed at least partially in the first compartment 16a, said lower with reference to Figure 1, while the second hub 22b is secured a second cover 24b, and is housed at least partially in the second compartment 16b, said upper with reference to Figure 1.
  • Each of the springs 18b, 18a is spirally wound. Their inner end cooperates respectively with a hook which are provided with the first and second hubs and their outer end cooperates with the drum 14.
  • the compartments are open on the side of the lids.
  • cover is meant the element that covers or even closes a compartment of the drum.
  • the first 24a and second 24b covers are free with reference to the drum 14 and are separated from the drum by a gap 30.
  • the covers 24a and 24b are each provided with a peripheral toothing while the drum 14 is free of teeth.
  • One of these teeth is used to arm the springs, while the other is used as PTO, to supply energy to a finishing gear of a timepiece in which is mounted the cylinder according to the invention .
  • the skilled person can choose to use one or other of the lids for winding or for supply energy.
  • covers 24a, 24b are independent of the drum 14, one can have a drum 14 of diameter greater than that of one or both covers 24a, 24b, which increases the number of turns of the springs 18a, 18b and therefore, the power reserve available.
  • the covers may be supported, each on a shoulder 25a, 25b that respectively comprise the hubs 22a and 22b.
  • the drum 14 comprises a cylindrical wall 26 and a flat wall 28, projecting with reference to the cylindrical wall 26.
  • the flat wall 28 is disposed substantially at mid-height of the cylindrical wall 26 and delimits the compartments 16a, 16b.
  • the cylindrical wall 26 and the flat wall 28 are integrally formed.
  • the flat wall 28 defines, in its center, an opening 28a positioned and dimensioned to substantially extend a channel formed by the hubs 22a and 22b. At the opening 28a, the flat wall may have an extra thickness to position the hubs in height. Between the lower hubs 22a and 22b and the walls of the drum 14, compartments 16a and 16b are thus defined.
  • compartments 16a, 16b take place, respectively, the first spiral spring 18a and the second spiral spring 18b.
  • the inner end cooperates with the lower hub 22a or the upper hub 22b, via the hooks mentioned above.
  • the outer end of the springs 18a, 18b cooperates with the cylindrical wall 26 of the drum 14.
  • the skilled person may consider making a fixed or sliding cooperation, of a type known in the field of barrels.
  • the two springs 18a, 18b are mounted so that the spirals they describe, are in the opposite direction.
  • the two springs of the barrel 10 being interconnected via the cylindrical wall 26 of the drum 14, they are thus arranged in series.
  • At least one of the covers is provided on its face facing the compartments, an antifriction coating 50.
  • the two covers are thus equipped with Such an antifriction coating 50.
  • the flat wall 28 may be provided, on at least one of its faces facing the compartments, preferably on both sides, with a coating. friction.
  • the anti-friction coating can be achieved by a washer fixed to the cover 24a, 24b or the flat wall 28.
  • the washer can be glued or deposited on the cover or on the flat wall.
  • a housing can be provided in the covers and / or in the flat wall, to accommodate the coating.
  • the antifriction coating may be made of a material selected from PTFE (polytetrafluoroethylene), or DLC (diamond like carbon), or silicon, or in another hard material within the reach of the skilled person.
  • PTFE polytetrafluoroethylene
  • DLC diamond like carbon
  • silicon silicon
  • the barrel 10 according to the invention does not include a pivot, in the usual sense of the term in terms of timepieces.
  • the barrels of the state of the art comprise an axis on which is mounted the inner end of the spring.
  • the ends of the axis define pivots which pivot in bearings of the frame of the timepiece in which the barrel is mounted.
  • the hubs and the drum pivot on a fixed shaft which takes place in the channel defined by the hubs 22a and 22b and by the central opening 28a of the flat wall.
  • the shaft 20 is arranged in the frame of the timepiece.
  • the barrel as defined by the present invention forms a functional whole constituted by the hubs 22a and 22b, the drum 14 and the springs 18a and 18b. According to this definition, the barrel pivots on the shaft 20 which is associated with it.
  • the shaft 20 serves to guide the barrel in rotation, without defining a pivot relative to the frame of the timepiece.
  • the shaft 20 may advantageously comprise bearing surfaces 20a, 20b enabling the hubs 22a and 22b to be positioned vertically, that is to say along the axis of the shaft. the drum 14.
  • the shaft also participates in defining axial positioning means of the barrel, to maintain the relative positioning of the components of the barrel.
  • the shaft 20 can receive a screw 34 or a nut, clamped against a third bearing 20c of the shaft. It will be noted that the axial positioning means do not force the hubs against each other and leave them free to rotate.
  • the shaft 20 is provided to be assembled on the timepiece independently of the components of the barrel.
  • the shaft participates in both the axial positioning means and the rotating guide means. The shaft can thus receive a bearing screw 34 or a nut holding the hubs and the drum axially.
  • the shaft is intended to be free and independent from the plate and defines only the axial positioning means.
  • the means for guiding the drum in rotation is a bearing 52 acting at the periphery of the drum.
  • the bearing serves as an interface between the drum and the frame of the timepiece and allows to suspend the barrel without the use of a bridge. External rollers could also be used to pivot the drum.
  • the lower hub 22a serves as a rotational guide for the upper hub 22b.
  • the lower hub 22a can advantageously participate in the axial positioning means, receiving, at its end, a nut or a bearing screw 34.
  • the lower hub forms a tube that can be positioned on a fixed shaft integral with the timepiece.
  • the barrel can thus form an independent, functional assembly, without pivot or axis of rotation, which can be assembled independently of the timepiece and then be mounted on the axis, previously fixed to the timepiece.
  • the lower hub also plays the role of the shaft.
  • the springs can be connected to their respective hub by rotating each of the hubs until its hook cooperates with the inner end of the spring.
  • the proposed constructions are advantageously simple in that they comprise a small number of parts and a small footprint. Both springs can be mounted independently of each other, which also facilitates assembly operations.
  • This provides a barrel 10 incorporating two springs 18a, 18b, to increase the torque provided by the barrel or the power reserve.
  • We can then propose to associate such barrels, in series or in parallel, for example by connecting two barrels 10 as described above, by means of a return, meshing with the upper cover of the two barrels 10.
  • This return can, for example, be the average wheel of the movement.
  • springs used either springs of the automatic winding type, that is to say allowing a limitation of the arming, or springs of the manual winding type, cooperating rigidly with the drum 14.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

The present invention relates to a timepiece barrel comprising: - a drum (14) defining a first compartment (16a) and a second compartment (16b) which compartments are superposed, - a first tubular hub (22a) secured to a first cover (24a) and housed at least partially in the first compartment, - a second tubular hub (22b) secured to a second cover (24b) housed at least partially in the second compartment. Each compartment contains a spring (18a, 18b) wound into a spiral and an inner first end of which collaborates with the first and second hubs respectively and a second end of which collaborates with the drum (14). The compartments are open on the side of the covers and the said first and second covers are free with reference to the drum (14) and are each provided with peripheral teeth, while the drum (14) has no teeth.

Description

Description  Description
Barillet  barrel
Domaine technique Technical area
[0001] La présente invention se rapporte au domaine de l'horlogerie mécanique.  The present invention relates to the field of mechanical watchmaking.
Elle se rapporte plus particulièrement à un barillet comprenant : It relates more particularly to a cylinder comprising:
- un tambour définissant un premier et un deuxième compartiments superposés, a drum defining first and second superposed compartments,
- un premier moyeu tubulaire solidaire d'un premier couvercle et logé au moins partiellement dans le premier compartiment, a first tubular hub integral with a first cover and housed at least partially in the first compartment,
- un deuxième moyeu tubulaire solidaire d'un deuxième couvercle logé au moins partiellement dans le deuxième compartiment. - A second tubular hub integral with a second cover housed at least partially in the second compartment.
[0002] Chaque compartiment contient un ressort enroulé en spirale dont une première extrémité intérieure coopère avec le premier et le deuxième moyeux respectivement et dont une deuxième extrémité coopère avec le tambour.  Each compartment contains a spirally wound spring, a first inner end cooperates with the first and second hub respectively and a second end cooperates with the drum.
Etat de la technique State of the art
[0003] Dans les montres mécaniques, l'énergie est généralement fournie par des ressorts enroulés en spirale et logés dans des barillets. Selon les cas, on cherche à obtenir le maximum d'énergie dans un volume donné pour optimiser le couple transmis et la réserve de marche, c'est-à-dire la durée maximale pendant laquelle le barillet peut faire fonctionner le mouvement dans des conditions correctes. Ces paramètres sont théoriquement améliorés en augmentant la hauteur des spires (c'est-à- dire la dimension perpendiculaire au plan du spiral) et en diminuant l'épaisseur de la lame formant le spiral permettant un plus grand nombre de spires pour un barillet de diamètre constant. Cependant, les contraintes de fabrication des ressorts limitent rapidement les possibilités d'augmentation de la hauteur ou de réduction de l'épaisseur.  In mechanical watches, the energy is generally provided by springs spirally wound and housed in barrels. Depending on the case, it is sought to obtain the maximum energy in a given volume to optimize the transmitted torque and the power reserve, that is to say the maximum time during which the cylinder can operate the movement under conditions correct. These parameters are theoretically improved by increasing the height of the turns (that is to say the dimension perpendicular to the plane of the spiral) and decreasing the thickness of the blade forming the spiral allowing a greater number of turns for a barrel of constant diameter. However, the spring manufacturing constraints quickly limit the possibilities of increasing the height or reducing the thickness.
[0004] On a déjà proposé, dans l'état de la technique, d'associer plusieurs barillets, soit en parallèle, soit en série, afin d'améliorer le couple transmis ou la réserve de marche. Par exemple, le document US4363553 propose une construction dans laquelle deux barillets, contenant chacun un ressort, sont assemblés en série. It has already been proposed, in the state of the art, to associate several barrels, either in parallel or in series, in order to improve the torque. transmitted or the power reserve. For example, the document US4363553 proposes a construction in which two barrels, each containing a spring, are assembled in series.
[0005] La présente invention a pour but de proposer une construction alternative et avantageuse, permettant d'améliorer les performances énergétiques d'un barillet dans un encombrement limité.  The present invention aims to provide an alternative and advantageous construction, to improve the energy performance of a cylinder in a limited space.
Divulgation de l'invention Disclosure of the invention
[0006] De façon plus précise, l'invention concerne un barillet ainsi qu'une pièce d'horlogerie tels que définis dans les revendications.  More specifically, the invention relates to a barrel and a timepiece as defined in the claims.
Brève description des dessins Brief description of the drawings
[0007] D'autres détails de l'invention apparaîtront plus clairement à la lecture de la description qui suit, faite en référence au dessin annexé dans lequel :  Other details of the invention will appear more clearly on reading the description which follows, made with reference to the accompanying drawing in which:
- la figure 1 est une vue en coupe d'un premier mode de réalisation de l'invention,  FIG. 1 is a sectional view of a first embodiment of the invention,
- la figue 2 propose une vue en éclaté de ce même premier mode de réalisation, et  FIG. 2 provides an exploded view of this same first embodiment, and
- les figures 3, 4 et 5 sont des vues en coupe d'un deuxième et d'un troisième modes de réalisation de l'invention.  - Figures 3, 4 and 5 are sectional views of a second and third embodiments of the invention.
Mode(s) de réalisation de l'invention Mode (s) of realization of the invention
[0008] On peut voir sur la figure 1 , un barillet 10 de pièce d'horlogerie illustrant l'invention. Ce barillet 10 comprend un tambour 14 qui définit deux compartiments 16a, 16b superposés en référence à l'axe géométrique du barillet et contenant chacun un ressort 18a, 18b enroulés en spirale.  We can see in Figure 1, a cylinder 10 of timepiece illustrating the invention. This barrel 10 comprises a drum 14 which defines two compartments 16a, 16b superimposed with reference to the geometric axis of the barrel and each containing a spring 18a, 18b wound in a spiral.
[0009] Plus précisément, le barillet comporte un premier et un deuxième moyeux tubulaires, séparés. Le premier moyeu 22a est solidaire d'un premier couvercle 24a. Le premier moyeu 22a est logé au moins partiellement dans le premier compartiment 16a, dit inférieur en référence à la figure 1 , tandis que le deuxième moyeu 22b est solidaire d'un deuxième couvercle 24b, et est logé au moins partiellement dans le deuxième compartiment 16b, dit supérieur en référence à la figure 1. More specifically, the barrel comprises a first and a second tubular hubs, separated. The first hub 22a is secured to a first cover 24a. The first hub 22a is housed at least partially in the first compartment 16a, said lower with reference to Figure 1, while the second hub 22b is secured a second cover 24b, and is housed at least partially in the second compartment 16b, said upper with reference to Figure 1.
[0010] Chacun des ressorts 18b, 18a est enroulé en spirale. Leur extrémité intérieure coopère respectivement avec un crochet dont sont dotés le premier et le deuxième moyeux et leur extrémité extérieure coopère avec le tambour 14. Each of the springs 18b, 18a is spirally wound. Their inner end cooperates respectively with a hook which are provided with the first and second hubs and their outer end cooperates with the drum 14.
[001 1] Les compartiments sont ouverts du côté des couvercles. Par couvercle, on entend l'élément qui recouvre, voire ferme, un compartiment du tambour. Dans le cas de l'invention, les premier 24a et deuxième 24b couvercles sont libres en référence au tambour 14 et sont séparés du tambour par un interstice 30. Les couvercles 24a et 24b sont chacun munis d'une denture périphérique tandis que le tambour 14 est libre de denture. L'une de ces dentures est utilisée pour armer les ressorts, tandis que l'autre est utilisée comme prise de force, pour alimenter en énergie un rouage de finissage d'une pièce d'horlogerie dans laquelle est monté le barillet selon l'invention. Selon la construction de la pièce d'horlogerie dans laquelle le barillet selon l'invention est destiné à être monté, l'homme du métier peut choisir d'utiliser l'un ou l'autre des couvercles pour l'armage ou pour la fourniture d'énergie.  [001 1] The compartments are open on the side of the lids. By cover is meant the element that covers or even closes a compartment of the drum. In the case of the invention, the first 24a and second 24b covers are free with reference to the drum 14 and are separated from the drum by a gap 30. The covers 24a and 24b are each provided with a peripheral toothing while the drum 14 is free of teeth. One of these teeth is used to arm the springs, while the other is used as PTO, to supply energy to a finishing gear of a timepiece in which is mounted the cylinder according to the invention . According to the construction of the timepiece in which the cylinder according to the invention is intended to be mounted, the skilled person can choose to use one or other of the lids for winding or for supply energy.
[0012] Grâce au fait que les couvercles 24a, 24b sont indépendants du tambour 14, on peut avoir un tambour 14 de diamètre supérieur à celui de l'un ou des deux couvercles 24a, 24b, ce qui permet d'augmenter le nombre de tours des ressorts 18a, 18b et donc, la réserve de marche disponible. Les couvercles peuvent être appuyés, chacun sur un épaulement 25a, 25b que comportent respectivement les moyeux 22a et 22b. Thanks to the fact that the covers 24a, 24b are independent of the drum 14, one can have a drum 14 of diameter greater than that of one or both covers 24a, 24b, which increases the number of turns of the springs 18a, 18b and therefore, the power reserve available. The covers may be supported, each on a shoulder 25a, 25b that respectively comprise the hubs 22a and 22b.
[0013] Dans les variantes proposées aux figures, le tambour 14 comporte une paroi cylindrique 26 et une paroi plane 28, s'étendant en saillie en référence à la paroi cylindrique 26. La paroi plane 28 est disposée sensiblement à mi-hauteur de la paroi cylindrique 26 et délimite les compartiments 16a, 16b. De préférence, la paroi cylindrique 26 et la paroi plane 28 sont venues d'une pièce. [0014] La paroi plane 28 définit, en son centre, une ouverture 28a positionnée et dimensionnée de manière à sensiblement prolonger un canal formé par les moyeux 22a et 22b. Au niveau de l'ouverture 28a, la paroi plane peut présenter une surépaisseur permettant de positionner en hauteur les moyeux. Entre les moyeux inférieur 22a et supérieur 22b et les parois du tambour 14, sont ainsi définis les compartiments 16a et 16b. In the variants proposed in the figures, the drum 14 comprises a cylindrical wall 26 and a flat wall 28, projecting with reference to the cylindrical wall 26. The flat wall 28 is disposed substantially at mid-height of the cylindrical wall 26 and delimits the compartments 16a, 16b. Preferably, the cylindrical wall 26 and the flat wall 28 are integrally formed. The flat wall 28 defines, in its center, an opening 28a positioned and dimensioned to substantially extend a channel formed by the hubs 22a and 22b. At the opening 28a, the flat wall may have an extra thickness to position the hubs in height. Between the lower hubs 22a and 22b and the walls of the drum 14, compartments 16a and 16b are thus defined.
[0015] Dans ces compartiments 16a, 16b prennent place, respectivement, le premier ressort en spiral 18a et le deuxième ressort en spiral 18b. Pour chacun d'eux, l'extrémité intérieure coopère avec le moyeu inférieur 22a ou le moyeu supérieur 22b, via les crochets mentionnés ci-dessus. In these compartments 16a, 16b take place, respectively, the first spiral spring 18a and the second spiral spring 18b. For each of them, the inner end cooperates with the lower hub 22a or the upper hub 22b, via the hooks mentioned above.
L'extrémité extérieure des ressorts 18a, 18b coopère avec la paroi cylindrique 26 du tambour 14. L'homme du métier pourra envisager de réaliser une coopération fixe ou glissante, de type connu dans le domaine des barillets. The outer end of the springs 18a, 18b cooperates with the cylindrical wall 26 of the drum 14. The skilled person may consider making a fixed or sliding cooperation, of a type known in the field of barrels.
[0016] Comme le montre la figure 2, les deux ressorts 18a, 18b sont montés de sorte que les spirales qu'ils décrivent, sont en sens inverse. Les deux ressorts du barillet 10 étant reliés entre eux via la paroi cylindrique 26 du tambour 14, ils sont ainsi agencés en série. As shown in Figure 2, the two springs 18a, 18b are mounted so that the spirals they describe, are in the opposite direction. The two springs of the barrel 10 being interconnected via the cylindrical wall 26 of the drum 14, they are thus arranged in series.
[0017] De manière avantageuse, ainsi qu'illustré sur la figure 3, au moins un des couvercles est muni, sur sa face située en regard des compartiments, d'un revêtement antifriction 50. De préférence, les deux couvercles sont ainsi dotés d'un tel revêtement antifriction 50. De même, bien que non représenté sur les dessins, la paroi plane 28 peut être munie, sur au moins une de ses faces situées en regard des compartiments, de préférence sur les deux faces, d'un revêtement antifriction. Advantageously, as shown in Figure 3, at least one of the covers is provided on its face facing the compartments, an antifriction coating 50. Preferably, the two covers are thus equipped with Such an antifriction coating 50. Similarly, although not shown in the drawings, the flat wall 28 may be provided, on at least one of its faces facing the compartments, preferably on both sides, with a coating. friction.
[0018] Le revêtement antifriction peut être réalisé par une rondelle fixée au couvercle 24a, 24b ou à la paroi plane 28. La rondelle peut être collée ou déposée sur le couvercle ou sur la paroi plane. Un logement peut être prévu dans les couvercles et/ou dans la paroi plane, pour accueillir le revêtement. Le revêtement antifriction peut être réalisé dans un matériau choisi parmi du PTFE (polytétrafluoroéthylène), ou du DLC (diamond like carbon), ou du silicium, ou dans un autre matériau dur à la portée de l'homme du métier. On peut obtenir un effet esthétique intéressant en rendant visible le revêtement antifriction 50 dont est muni le couvercle, au travers d'ouvertures ménagées dans le couvercle. The anti-friction coating can be achieved by a washer fixed to the cover 24a, 24b or the flat wall 28. The washer can be glued or deposited on the cover or on the flat wall. A housing can be provided in the covers and / or in the flat wall, to accommodate the coating. The antifriction coating may be made of a material selected from PTFE (polytetrafluoroethylene), or DLC (diamond like carbon), or silicon, or in another hard material within the reach of the skilled person. An interesting aesthetic effect can be obtained by making visible the anti-friction coating 50 which is provided with the lid, through openings in the lid.
[0019] De manière particulièrement avantageuse, on peut constater que le barillet 10 selon l'invention ne comporte pas de pivot, au sens usuel du terme en matière d'horlogerie. En effet, de manière générale, les barillets de l'état de la technique comportent un axe sur lequel est montée l'extrémité intérieure du ressort. Les extrémités de l'axe définissent des pivots qui pivotent dans des paliers du bâti de la pièce d'horlogerie dans laquelle le barillet est monté. Selon l'invention, les moyeux et le tambour pivotent sur un arbre 20 fixe qui prend place dans le canal défini par les moyeux 22a et 22b et par l'ouverture centrale 28a de la paroi plane. Dans le mode de réalisation de la figure In a particularly advantageous manner, it can be seen that the barrel 10 according to the invention does not include a pivot, in the usual sense of the term in terms of timepieces. Indeed, in general, the barrels of the state of the art comprise an axis on which is mounted the inner end of the spring. The ends of the axis define pivots which pivot in bearings of the frame of the timepiece in which the barrel is mounted. According to the invention, the hubs and the drum pivot on a fixed shaft which takes place in the channel defined by the hubs 22a and 22b and by the central opening 28a of the flat wall. In the embodiment of the figure
1 , l'arbre 20 est agencé dans le bâti de la pièce d'horlogerie. Le barillet tel que défini par la présente invention, forme un tout fonctionnel constitué par les moyeux 22a et 22b, le tambour 14 et les ressorts 18a et 18b. Selon cette définition, le barillet pivote sur l'arbre 20 qui lui est associé. 1, the shaft 20 is arranged in the frame of the timepiece. The barrel as defined by the present invention forms a functional whole constituted by the hubs 22a and 22b, the drum 14 and the springs 18a and 18b. According to this definition, the barrel pivots on the shaft 20 which is associated with it.
[0020] L'arbre 20 sert de guidage en rotation du barillet, sans définir de pivot par rapport au bâti de la pièce d'horlogerie. Dans le mode de réalisation de la figure 1 , l'arbre 20 peut avantageusement comporter des portées 20a, 20b permettant de positionner en hauteur, c'est-à-dire selon l'axe de l'arbre, les moyeux 22a et 22b et le tambour 14. Ainsi, l'arbre participe également à définir des moyens de positionnement axial du barillet, permettant de maintenir le positionnement relatif des éléments composant le barillet. L'arbre 20 peut recevoir une vis à portée 34 ou un écrou, serrée contre une troisième portée 20c de l'arbre. On notera que les moyens de positionnement axial ne contraignent pas les moyeux l'un contre l'autre et les laissent libres en rotation. [0021] Dans le mode de réalisation de la figure 3, l'arbre 20 est prévu pour pouvoir être assemblé sur la pièce d'horlogerie de manière indépendante par rapport aux constituants du barillet. Tout comme pour la première variante, l'arbre participe à la fois aux moyens de positionnement axial et aux moyens de guidage en rotation. L'arbre peut ainsi recevoir une vis à portée 34 ou un écrou maintenant axialement les moyeux et le tambour. The shaft 20 serves to guide the barrel in rotation, without defining a pivot relative to the frame of the timepiece. In the embodiment of FIG. 1, the shaft 20 may advantageously comprise bearing surfaces 20a, 20b enabling the hubs 22a and 22b to be positioned vertically, that is to say along the axis of the shaft. the drum 14. Thus, the shaft also participates in defining axial positioning means of the barrel, to maintain the relative positioning of the components of the barrel. The shaft 20 can receive a screw 34 or a nut, clamped against a third bearing 20c of the shaft. It will be noted that the axial positioning means do not force the hubs against each other and leave them free to rotate. In the embodiment of Figure 3, the shaft 20 is provided to be assembled on the timepiece independently of the components of the barrel. As for the first variant, the shaft participates in both the axial positioning means and the rotating guide means. The shaft can thus receive a bearing screw 34 or a nut holding the hubs and the drum axially.
[0022] Dans la variante de la figure 4, l'arbre est destiné à être libre et indépendant par rapport à la platine et ne définit que les moyens de positionnement axial. Le moyen de guidage en rotation du tambour est un roulement 52 agissant à la périphérie du tambour. Le roulement sert d'interface entre le tambour et le bâti de la pièce d'horlogerie et permet de suspendre le barillet, sans utilisation de pont. On pourrait également utiliser des galets extérieurs pour assurer le pivotement du tambour. In the variant of Figure 4, the shaft is intended to be free and independent from the plate and defines only the axial positioning means. The means for guiding the drum in rotation is a bearing 52 acting at the periphery of the drum. The bearing serves as an interface between the drum and the frame of the timepiece and allows to suspend the barrel without the use of a bridge. External rollers could also be used to pivot the drum.
[0023] Pour le montage du barillet, on effectue les étapes suivantes : For mounting the barrel, the following steps are carried out:
- monter le moyeu inférieur 22a sur l'arbre 20,  - mount the lower hub 22a on the shaft 20,
- monter le tambour 14 associé aux ressorts 18a et 18b sur l'arbre 20, - Mount the drum 14 associated with the springs 18a and 18b on the shaft 20,
- relier le ressort inférieur 18a au moyeu inférieur 22a, - connect the lower spring 18a to the lower hub 22a,
- monter le moyeu supérieur 22b sur l'arbre 20,  - mount the upper hub 22b on the shaft 20,
- relier le ressort supérieur 18b au moyeu supérieur 22b,  - connect the upper spring 18b to the upper hub 22b,
- positionner les moyens de positionnement axial, en l'espèce en serrant la vis 34 dans l'arbre 20.  - Position the axial positioning means, in this case by tightening the screw 34 in the shaft 20.
[0024] Dans la variante schématisée à la figure 5, le moyeu inférieur 22a sert de guidage en rotation pour le moyeu supérieur 22b. Le moyeu inférieur 22a peut, de manière avantageuse, participer aux moyens de positionnement axial, en recevant, à son extrémité, un écrou ou une vis à portée 34. Le moyeu inférieur forme un tube susceptible d'être positionné sur un axe monté solidaire de la pièce d'horlogerie. Le barillet peut ainsi former un ensemble indépendant, fonctionnel, sans pivot ni axe de rotation, pouvant être assemblé indépendamment de la pièce d'horlogerie et être ensuite monté sur l'axe, préalablement fixé à la pièce d'horlogerie. [0025] Dans ce mode de réalisation, le moyeu inférieur joue également le rôle de l'arbre. Ainsi, on effectue les étapes suivantes. In the variant shown schematically in Figure 5, the lower hub 22a serves as a rotational guide for the upper hub 22b. The lower hub 22a can advantageously participate in the axial positioning means, receiving, at its end, a nut or a bearing screw 34. The lower hub forms a tube that can be positioned on a fixed shaft integral with the timepiece. The barrel can thus form an independent, functional assembly, without pivot or axis of rotation, which can be assembled independently of the timepiece and then be mounted on the axis, previously fixed to the timepiece. In this embodiment, the lower hub also plays the role of the shaft. Thus, the following steps are performed.
- se doter du moyeu inférieur 22a,  - to equip the lower hub 22a,
- monter le tambour 14 associé aux ressorts 18a et 18b sur le moyeu inférieur 22a,  - Mount the drum 14 associated with the springs 18a and 18b on the lower hub 22a,
- relier le ressort inférieur 18a au moyeu inférieur 22a,  - connect the lower spring 18a to the lower hub 22a,
- monter le moyeu supérieur 22b sur le moyeu inférieur 22a,  - mount the upper hub 22b on the lower hub 22a,
- relier le ressort supérieur 18b au moyeu supérieur 22b,  - connect the upper spring 18b to the upper hub 22b,
- positionner les moyens de positionnement axial, en l'espèce en serrant la vis 34 dans le moyeu inférieur 22a.  - Position the axial positioning means, in this case by tightening the screw 34 in the lower hub 22a.
[0026] On notera que d'un point de vue pratique, les ressorts peuvent être reliés à leur moyeu respectif en faisant tourner chacun des moyeux jusqu'à ce que son crochet coopère avec l'extrémité intérieure du ressort.  Note that from a practical point of view, the springs can be connected to their respective hub by rotating each of the hubs until its hook cooperates with the inner end of the spring.
[0027] Ainsi, si le barillet 10 est connecté avec le système de remontage par le couvercle inférieur 24a, on va armer le ressort inférieur 18a via le moyeu inférieur 22a. Progressivement, le ressort inférieur 18a se dévide dans le ressort supérieur 18b, via le tambour 14, entraînant l'armage du ressort supérieur 18b. Le couple est alors disponible au niveau du couvercle supérieur 24b, via le moyeu supérieur 22b. On peut également inverser cette disposition en reliant le couvercle supérieur au système de remontage et le couvercle inférieur au rouage de finissage. Thus, if the barrel 10 is connected with the winding system by the lower cover 24a, we will arm the lower spring 18a via the lower hub 22a. Progressively, the lower spring 18a is unwound in the upper spring 18b, via the drum 14, causing the winding of the upper spring 18b. The torque is then available at the top cover 24b via the upper hub 22b. This arrangement can also be reversed by connecting the upper cover to the winding system and the lower cover to the work train.
[0028] Les constructions proposées sont avantageusement simples en ce qu'elles comprennent un nombre réduit de pièces et un encombrement faible. Les deux ressorts peuvent être montés indépendamment l'un de l'autre, ce qui facilite également les opérations d'assemblage.  The proposed constructions are advantageously simple in that they comprise a small number of parts and a small footprint. Both springs can be mounted independently of each other, which also facilitates assembly operations.
[0029] On obtient ainsi un barillet 10 intégrant deux ressorts 18a, 18b, permettant d'augmenter le couple fourni par le barillet ou la réserve de marche. On peut alors proposer d'associer de tels barillets, en série ou en parallèle, par exemple en reliant deux barillets 10 tels que décrits ci- dessus, au moyen d'un renvoi, engrenant avec le couvercle supérieur des deux barillets 10. Ce renvoi peut, par exemple, être la roue de moyenne du mouvement. This provides a barrel 10 incorporating two springs 18a, 18b, to increase the torque provided by the barrel or the power reserve. We can then propose to associate such barrels, in series or in parallel, for example by connecting two barrels 10 as described above, by means of a return, meshing with the upper cover of the two barrels 10. This return can, for example, be the average wheel of the movement.
L'homme du métier pourra choisir les ressorts utilisés, soit des ressorts de type remontage automatique, c'est-à-dire permettant une limitation de l'armage, soit des ressorts de type remontage manuel, coopérant rigidement avec le tambour 14. The person skilled in the art may choose the springs used, either springs of the automatic winding type, that is to say allowing a limitation of the arming, or springs of the manual winding type, cooperating rigidly with the drum 14.

Claims

Revendications claims
1. Barillet de pièce d'horlogerie, comprenant : 1. Timepiece barrel, comprising:
- un tambour (14) définissant un premier (16a) et un deuxième (16b) compartiments superposés,  a drum (14) defining a first (16a) and a second (16b) superimposed compartments,
- un premier moyeu (22a) tubulaire solidaire d'un premier couvercle (24a) et logé au moins partiellement dans le premier compartiment, a first tubular hub (22a) integral with a first cover (24a) and housed at least partially in the first compartment,
- un deuxième moyeu (22b) tubulaire solidaire d'un deuxième couvercle (24b) logé au moins partiellement dans le deuxième compartiment, a second tubular hub (22b) integral with a second cover (24b) housed at least partially in the second compartment,
chaque compartiment contenant un ressort (18a, 18b) enroulé en spirale dont une première extrémité intérieure coopère respectivement avec le premier et le deuxième moyeux et dont une deuxième extrémité coopère avec le tambour (14),  each compartment containing a spirally wound spring (18a, 18b) having a first inner end cooperating respectively with the first and second hubs and having a second end cooperating with the drum (14),
lesdits compartiments étant ouverts du côté des couvercles et en ce que ledit premier et deuxième couvercles sont libres en référence au tambour (14) et sont chacun munis d'une denture périphérique tandis que le tambour (14) est libre de denture.  said compartments being open on the side of the covers and in that said first and second covers are free with reference to the drum (14) and are each provided with a peripheral toothing while the drum (14) is free of toothing.
2. Barillet selon la revendication 1 , caractérisé en ce que ledit barillet, en tant que tel, ne comporte pas de pivot destinés à pivoter sur une platine de pièce d'horlogerie. 2. Barrel according to claim 1, characterized in that said barrel, as such, does not include a pivot for pivoting on a timepiece plate.
3. Barillet selon la revendication 1 , caractérisé en ce qu'au moins un desdits premier et deuxième couvercles est muni, sur sa face située en regard, respectivement dudit premier ou deuxième compartiment, d'un revêtement antifriction (50). 3. Barrel according to claim 1, characterized in that at least one of said first and second covers is provided on its opposite face, respectively said first or second compartment, an anti-friction coating (50).
4. Barillet selon l'une des revendications précédentes, caractérisé en ce que ledit tambour (14) comporte une paroi cylindrique (26) et une paroi plane (28), s'étendant en saillie en référence à la paroi cylindrique (26), ladite paroi plane (28) délimitant lesdits compartiments. 4. Barrel according to one of the preceding claims, characterized in that said drum (14) comprises a cylindrical wall (26) and a flat wall (28), projecting with reference to the cylindrical wall (26), said planar wall (28) defining said compartments.
Barillet selon la revendication 3, caractérisé en ce que ladite paroi plane (28) est munie, sur au moins une de ses faces situées en regard dudit premier ou deuxième compartiment, d'un revêtement antifriction (50). Barrel according to claim 3, characterized in that said flat wall (28) is provided on at least one of its faces facing said first or second compartment, an anti-friction coating (50).
Barillet selon la revendication 3 ou la revendication 4, caractérisé en ce que ladite paroi cylindrique (26) et la paroi plane (28) sont venues d'une pièce. Barrel according to claim 3 or claim 4, characterized in that said cylindrical wall (26) and the flat wall (28) are integrally formed.
Barillet selon l'une des revendications 3 à 6, caractérisé en ce que ledit revêtement antifriction est réalisé par une rondelle fixée au couvercle ou à ladite paroi plane. Barrel according to one of claims 3 to 6, characterized in that said anti-friction coating is made by a washer fixed to the cover or to said flat wall.
8. Barillet selon l'une des revendications 3 à 7, caractérisé en ce que ledit revêtement antifriction (50) est réalisé dans un matériau choisi parmi du PTFE, ou du DLC ou du silicium. 8. Barrel according to one of claims 3 to 7, characterized in that said anti-friction coating (50) is made of a material selected from PTFE, or DLC or silicon.
9. Barillet selon l'une des revendications 3 à 8, caractérisé en ce que ledit revêtement antifriction dont est muni le couvercle, est visible au travers d'ouvertures ménagées dans le couvercle. 9. Barrel according to one of claims 3 to 8, characterized in that said anti-friction coating which is provided with the lid, is visible through openings in the lid.
10. Barillet selon l'une des revendications précédentes, caractérisé en ce que lesdits premier et deuxième moyeux sont positionnés par des moyens de positionnement axial les positionnant l'un en référence à l'autre. 10. The barrel according to one of the preceding claims, characterized in that said first and second hubs are positioned by axial positioning means positioning them one with reference to the other.
1 1. Barillet selon la revendication 10, caractérisé en ce que le premier moyeu (22a) est logé dans le premier (16a) et dans le deuxième (16b) compartiments et en ce que le deuxième moyeu (22b) est pivoté sur le premier moyeu (22a), les moyens de positionnement axial étant agencés pour coopérer avec ledit premier moyeu (22a). 1 1. A cylinder according to claim 10, characterized in that the first hub (22a) is housed in the first (16a) and in the second (16b) compartments and in that the second hub (22b) is pivoted on the first hub (22a), the axial positioning means being arranged to cooperate with said first hub (22a).
12. Barillet selon l'une des revendications précédentes, caractérisé en ce qu'il est associé à un arbre (20) de guidage en rotation, ledit arbre étant destiné à être fixe. 12. Barrel according to one of the preceding claims, characterized in that it is associated with a shaft (20) for guiding rotation, said shaft being intended to be fixed.
13. Pièce d'horlogerie comprenant un barillet selon la revendication 10 et un moyen de guidage en rotation du tambour (14). 13. Timepiece comprising a barrel according to claim 10 and a means for guiding the drum (14) in rotation.
14. Pièce d'horlogerie selon la revendication 13, caractérisée en ce que ledit moyen de guidage en rotation du tambour est agencé de manière à agir à la périphérie du tambour, ledit barillet étant suspendu. 14. Timepiece according to claim 13, characterized in that said means for guiding rotation of the drum is arranged to act at the periphery of the drum, said barrel being suspended.
15. Pièce d'horlogerie selon la revendication 13, caractérisée en ce que ledit moyen de guidage en rotation est un axe solidaire du bâti de la pièce d'horlogerie et en ce que ledit axe participe aux moyens de positionnement axial du barillet. 15. Timepiece according to claim 13, characterized in that said rotational guiding means is an integral axis of the frame of the timepiece and in that said axis participates in the axial positioning means of the barrel.
16. Procédé de montage d'une pièce d'horlogerie selon la revendication 15, caractérisé en ce qu'il comporte les étapes suivantes : 16. A method of mounting a timepiece according to claim 15, characterized in that it comprises the following steps:
- monter le premier moyeu (22a) sur l'arbre (20),  - mount the first hub (22a) on the shaft (20),
- monter le tambour (14) associé aux ressorts (18b, 18a) sur le premier moyeu (22a),  - mount the drum (14) associated with the springs (18b, 18a) on the first hub (22a),
- relier le premier ressort (18a) au premier moyeu (22a),  - connect the first spring (18a) to the first hub (22a),
- monter le deuxième moyeu (22b) sur l'arbre,  - mount the second hub (22b) on the shaft,
- relier le deuxième ressort (18b) au deuxième moyeu (22b), - connect the second spring (18b) to the second hub (22b),
- positionner les moyens de positionnement axial sur l'arbre (20). - Position the axial positioning means on the shaft (20).
EP13710338.8A 2012-03-09 2013-03-08 Barrel Not-in-force EP2823364B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00340/12A CH706214B1 (en) 2012-03-09 2012-03-09 Barrel timepiece.
PCT/EP2013/054765 WO2013132076A1 (en) 2012-03-09 2013-03-08 Barrel

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EP2823364A1 true EP2823364A1 (en) 2015-01-14
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JP (1) JP6072837B2 (en)
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CH706214B1 (en) 2016-09-30
HK1204100A1 (en) 2015-11-06
CN104220939B (en) 2016-10-12
US9335738B2 (en) 2016-05-10
CH706214A1 (en) 2013-09-13
JP2015509600A (en) 2015-03-30
EP2823364B1 (en) 2016-05-25
WO2013132076A1 (en) 2013-09-12
JP6072837B2 (en) 2017-02-01
US20150138932A1 (en) 2015-05-21

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