EP2053473A2 - Barrel for a timepiece - Google Patents

Barrel for a timepiece Download PDF

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Publication number
EP2053473A2
EP2053473A2 EP20080011150 EP08011150A EP2053473A2 EP 2053473 A2 EP2053473 A2 EP 2053473A2 EP 20080011150 EP20080011150 EP 20080011150 EP 08011150 A EP08011150 A EP 08011150A EP 2053473 A2 EP2053473 A2 EP 2053473A2
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EP
European Patent Office
Prior art keywords
barrel
drum
shaft
fixed
barrel shaft
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.)
Withdrawn
Application number
EP20080011150
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German (de)
French (fr)
Inventor
Laurent Besse
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.)
LES ARTISANS HORLOGERS SARL
Artisans Horlogers SARL
Original Assignee
LES ARTISANS HORLOGERS SARL
Artisans Horlogers SARL
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 LES ARTISANS HORLOGERS SARL, Artisans Horlogers SARL filed Critical LES ARTISANS HORLOGERS SARL
Publication of EP2053473A2 publication Critical patent/EP2053473A2/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/16—Barrels; Arbors; Barrel axles

Definitions

  • the present invention relates to barrels for clockwork comprising a barrel shaft on which is rotatably mounted a barrel drum, a motor spring being housed in the drum and fixed by its inner end to the barrel shaft and by its outer end to the inner wall of said drum.
  • the invention relates to such a barrel or the drum is rotatably mounted on the barrel shaft by means of ball bearings.
  • Such barrels are known CH 390 801 , FR 403 943 and JP 11174162 . All these known barrels comprise a closed drum or provided with a lid pivoted on the barrel shaft by means of two separate ball bearings.
  • the subject of the present invention is a cylinder for a watch or watch movement comprising a drum pivotally mounted using a ball bearing on a barrel shaft and a spring fixed by its inner end to the barrel shaft and by its outer end to the inner peripheral wall of said drum tending to obviate the aforementioned drawbacks, easy to assemble and reducing as much as possible the number of parts constituting it to reduce the cost price, the cost and the assembly time and its bulk , especially in thickness.
  • the barrel for a piece or clockwork comprises a barrel shaft, a barrel drum enclosing a motor spring whose inner end is fixed to the barrel shaft, while the outer end is fixed to the barrel shaft.
  • barrel drum and is distinguished by the fact that the barrel drum is rotatably mounted on the barrel shaft by a single ball bearing located between the barrel shaft and the bottom of the barrel drum.
  • the invention also relates to a timepiece cylinder having a barrel axis and a barrel drum, which is distinguished by the fact that the inner wafer of the bottom of the drum comprises a first and a second outer rolling faces; in that a first inner rolling face is machined in the barrel shaft; in that a second inner rolling face is carried by a ring fixed on a shoulder of the barrel shaft 1; and in that a bead train is located between the two inner rolling faces and the two outer rolling faces.
  • the invention also relates to a timepiece provided with a barrel as defined in the two preceding paragraphs.
  • the invention also relates to particular embodiments of a barrel having the features listed in claims 2 to 6 and 8 to 10.
  • the attached drawing illustrates schematically and by way of example an embodiment of the barrel for a watch or watch movement according to the invention.
  • the figure 1 is a perspective view from above of the barrel according to the invention.
  • the figure 2 is an axial section on a larger scale of the cylinder illustrated in figure 1 .
  • the barrel for movement or timepiece comprises a barrel shaft 1 having a central portion 1.1 of larger diameter, the side wall 1.2 comprises conventional means, pad, pin, rivet, hook, etc. adapted to attach the inner end of a barrel spring (not shown).
  • this shaft has a first annular inner bearing surface 1.3. forming an angle of 45 ° with the longitudinal axis of the barrel shaft 1.
  • This first inner rolling face 1.3 is machined in or on the barrel axis 1.
  • This barrel further comprises a drum 2 comprising a bottom 2.1 extending perpendicularly to the barrel shaft 1 and a circular side wall 2.2 concentric with the barrel shaft 1.
  • This side wall 2.2 of the drum 2 has a set of teeth 2.3 intended for mesh with the clockwork motor of the watch movement.
  • the outer end of the barrel spring (not shown) is fixed to the inner face of the drum side wall 2.2 in any conventional manner using a shoe, a rivet, a pin, a a hook etc.
  • the bottom 2.1 of the drum 2 has a central bore 2.4 whose diameter is greater than the largest diameter D1 of the rolling face 1.3 of the barrel shaft 1 but less than the diameter D2 of the outer face 1.2 of the central portion 1.1 of this barrel axis 1.
  • first and second bearing surfaces 2.5, 2.6 In this central bore 2.4 of the bottom 2.1 of the drum 2, are machined first and second bearing surfaces 2.5, 2.6 annular of an outer race. These bearing surfaces 2.5, 2.6 form an angle of 90 ° between them and each of them of 45 ° with the axis of the barrel shaft 1 or the drum 2. These two outer bearing faces 2.5 and 2.6 constitute a first outer race for a series of balls 3 also in contact with the rolling face 1.3 of the barrel shaft 1.
  • a ring 4 is driven on a bearing surface 1.4 of the barrel shaft 1 and abuts on a shoulder 1.5 of this barrel shaft 1 in a service position for which a second internal rolling face 4.1 carried by this ring 4 forms with the first internal bearing surface 1.3 of the barrel shaft 1 an internal raceway for the balls 3; the external raceway for these balls 3 being formed by the two rolling surfaces 2.5, 2.6 of the bottom 2.1 of the drum 2.
  • the second inner rolling face 4.1 of the ring 4 forms a 90 ° angle with the first internal rolling face 1.3 of the barrel axis 1, these two rolling faces 1.3 and 4.1 both form an angle of 45 ° with the axis of the barrel shaft 1 and the axis of the barrel drum 2, the two internal running faces 1.3, 4.1 being located in the assembled position of the barrel opposite the two outer bearing faces 2.5, 2.6.
  • the ring 4 could be threaded internally and screwed onto a thread that would comprise the portion 1.4 of the barrel shaft 1.
  • this method of pivoting the drum 2 on the barrel shaft 1 is very simple, has only one ball bearing without cages, the balls 3 rolling directly on the outer race formed by the faces rolling bearing 2.5, 2.6 of the drum and on the inner race formed by the rolling face 1.3 of the barrel shaft 1 and the rolling face 4.1 of the ring 4.
  • the barrel variant illustrated also comprises a lid 5 fixed to the peripheral wall 2.2 of the drum 2 and having a central hole 5.1 allowing the barrel shaft 1 to pass.
  • the edge of this central hole 5.1 bears against the edge of the central portion 1.1 of this shaft 1 located on the opposite side to the ball bearing 3, 2.5, 2.6, 1.3, 4.1.
  • This lid 5 is optional, the barrel operating perfectly without it.
  • the number of parts of this assembly is reduced to the maximum, which facilitates the mounting of the drum 2 on the barrel shaft 1. This low number of parts also reduces the costs of such an embodiment.
  • the presence of a single ball bearing guarantees perfect centering and mounting of the drum 2 on the barrel shaft 1 and decreases the frictional forces, which increases the efficiency of the barrel.
  • the drum 2 is thus mounted on the barrel shaft 1 by a train of balls 3 rolling on a raceway outer face formed by two bearing faces 2.5, 2.6 machined in the wall of the central bore 2.4 of the bottom 2.1 of the barrel drum 2 and on an internal raceway formed of two bearing faces, the first 1.4 being machined in the shaft of barrel 1 and the second 4.1 being machined on a ring 4 fixed on said barrel shaft 1.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The barrel has an arbor (1) and a barrel drum (2) enclosing a mainspring with interior and exterior ends. The interior end is fixed to the arbor, and the exterior end is fixed to the barrel drum. The barrel drum is rotatively mounted on the arbor by a single ball bearing (3) located between the arbor and a bottom (2.1) of the barrel drum. A ring (4) is driven or screwed onto an arbor portion (1.4), and a cylindrical peripheral exterior side wall (2.2) of the barrel drum carries a tooth (2.3). The barrel drum has a cover (5) fixed on the wall of the barrel drum by its exterior edge.

Description

La présente invention se rapporte aux barillets pour mouvement d'horlogerie comportant un arbre de barillet sur lequel est monté rotatif un tambour de barillet, un ressort moteur étant logé dans le tambour et fixé par son extrémité interne à l'arbre de barillet et par son extrémité externe à la paroi interne dudit tambour. En particulier l'invention a trait à un tel barillet ou le tambour est monté rotatif sur l'arbre de barillet à l'aide de roulements à billes.The present invention relates to barrels for clockwork comprising a barrel shaft on which is rotatably mounted a barrel drum, a motor spring being housed in the drum and fixed by its inner end to the barrel shaft and by its outer end to the inner wall of said drum. In particular the invention relates to such a barrel or the drum is rotatably mounted on the barrel shaft by means of ball bearings.

On connaît de tels barillets des documents CH 390 801 , FR 403 943 et JP 11174162 . Tous ces barillets connus comportent un tambour fermé ou muni d'un couvercle pivoté sur l'arbre de barillet à l'aide de deux roulements à billes distincts.Such barrels are known CH 390 801 , FR 403 943 and JP 11174162 . All these known barrels comprise a closed drum or provided with a lid pivoted on the barrel shaft by means of two separate ball bearings.

La présence de deux roulements à billes pour le pivotement du tambour sur l'axe de barillet entraîne plusieurs inconvénients tels qu'une perte de rendement, un alignement délicat des roulements à billes et une maîtrise médiocre des ébats de l'ensemble couvercle-ressort-tambour. De plus, la présence de plusieurs roulements à billes augmente l'encombrement du barillet, rend son assemblage plus délicat et a un coût non négligeable.The presence of two ball bearings for pivoting the drum on the barrel axis has several disadvantages such as a loss of efficiency, a delicate alignment of the ball bearings and a poor control of the frolics of the cover-spring- drum. In addition, the presence of several ball bearings increases the size of the barrel, makes assembly more delicate and has a significant cost.

La présente invention a pour objet un barillet pour pièce ou mouvement d'horlogerie comprenant un tambour monté pivotant à l'aide de roulement à billes sur un arbre de barillet et un ressort fixé par son extrémité intérieure à l'arbre de barillet et par son extrémité extérieure à la paroi périphérique interne dudit tambour tendant à obvier aux inconvénients précités, facile à assembler et réduisant le plus possible le nombre de pièces le constituant pour en réduire le prix de revient, le coût et le temps d'assemblage ainsi que son encombrement, notamment en épaisseur.The subject of the present invention is a cylinder for a watch or watch movement comprising a drum pivotally mounted using a ball bearing on a barrel shaft and a spring fixed by its inner end to the barrel shaft and by its outer end to the inner peripheral wall of said drum tending to obviate the aforementioned drawbacks, easy to assemble and reducing as much as possible the number of parts constituting it to reduce the cost price, the cost and the assembly time and its bulk , especially in thickness.

Le barillet pour pièce ou mouvement d'horlogerie selon l'invention comporte un arbre de barillet, un tambour de barillet renfermant un ressort moteur dont l'extrémité intérieure est fixée à l'arbre de barillet, tandis que l'extrémité extérieure est fixée au tambour de barillet et se distingue par le fait que le tambour de barillet est monté rotatif sur l'arbre de barillet par un seul roulement à billes situé entre l'arbre de barillet et le fond du tambour de barillet.The barrel for a piece or clockwork according to the invention comprises a barrel shaft, a barrel drum enclosing a motor spring whose inner end is fixed to the barrel shaft, while the outer end is fixed to the barrel shaft. barrel drum and is distinguished by the fact that the barrel drum is rotatably mounted on the barrel shaft by a single ball bearing located between the barrel shaft and the bottom of the barrel drum.

L'invention a également pour objet un barillet pour pièce d'horlogerie comportant un axe de barillet et un tambour de barillet, qui se distingue par le fait que la tranche interne du fond du tambour comporte une première et une seconde faces de roulement externes; par le fait qu'une première face de roulement interne est usinée dans l'arbre de barillet; par le fait qu'une seconde face de roulement interne est portée par une bague fixée sur un épaulement de l'arbre de barillet 1; et par le fait qu'un train de billes est situé entre les deux faces de roulement internes et les deux faces de roulement externes.The invention also relates to a timepiece cylinder having a barrel axis and a barrel drum, which is distinguished by the fact that the inner wafer of the bottom of the drum comprises a first and a second outer rolling faces; in that a first inner rolling face is machined in the barrel shaft; in that a second inner rolling face is carried by a ring fixed on a shoulder of the barrel shaft 1; and in that a bead train is located between the two inner rolling faces and the two outer rolling faces.

L'invention a encore pour objet une pièce d'horlogerie munie d'un barillet tel que défini dans les deux paragraphes précédents.The invention also relates to a timepiece provided with a barrel as defined in the two preceding paragraphs.

Enfin, l'invention concerne encore des formes d'exécution particulières d'un barillet présentant les caractéristiques énumérées aux revendications 2 à 6 et 8 à 10.Finally, the invention also relates to particular embodiments of a barrel having the features listed in claims 2 to 6 and 8 to 10.

Le dessin annexé illustre schématiquement et à titre d'exemple une forme d'exécution du barillet pour pièce ou mouvement d'horlogerie selon l'invention.The attached drawing illustrates schematically and by way of example an embodiment of the barrel for a watch or watch movement according to the invention.

La figure 1 est une vue en perspective de dessus du barillet selon l'invention.The figure 1 is a perspective view from above of the barrel according to the invention.

La figure 2 est une coupe axiale à plus grande échelle du barillet illustré à la figure 1.The figure 2 is an axial section on a larger scale of the cylinder illustrated in figure 1 .

Dans la forme d'exécution illustrée le barillet pour mouvement ou pièce d'horlogerie selon l'invention, comporte un arbre de barillet 1 présentant une partie centrale 1.1 de plus grand diamètre dont la paroi latérale 1.2 comporte des moyens conventionnels, patin, goupille, rivet, crochet, etc. propres à y fixer l'extrémité intérieure d'un ressort de barillet (non illustré).In the illustrated embodiment, the barrel for movement or timepiece according to the invention comprises a barrel shaft 1 having a central portion 1.1 of larger diameter, the side wall 1.2 comprises conventional means, pad, pin, rivet, hook, etc. adapted to attach the inner end of a barrel spring (not shown).

A proximité d'une des extrémités de la partie centrale 1.1 de l'arbre de barillet 1, cet arbre comporte une première face de roulement interne 1.3 annulaire formant un angle de 45° avec l'axe longitudinal de l'arbre de barillet 1. Cette première face de roulement interne 1.3 est usinée dans ou sur l'axe de barillet 1.Near one of the ends of the central portion 1.1 of the barrel shaft 1, this shaft has a first annular inner bearing surface 1.3. forming an angle of 45 ° with the longitudinal axis of the barrel shaft 1. This first inner rolling face 1.3 is machined in or on the barrel axis 1.

Ce barillet comporte encore un tambour 2 comprenant un fond 2.1 s'étendant perpendiculairement à l'arbre de barillet 1 et une paroi latérale circulaire 2.2 concentrique à l'arbre de barillet 1. Cette paroi latérale 2.2 du tambour 2 comporte une denture 2.3 destinée à engrener avec le rouage moteur du mouvement d'horlogerie.This barrel further comprises a drum 2 comprising a bottom 2.1 extending perpendicularly to the barrel shaft 1 and a circular side wall 2.2 concentric with the barrel shaft 1. This side wall 2.2 of the drum 2 has a set of teeth 2.3 intended for mesh with the clockwork motor of the watch movement.

L'extrémité extérieure du ressort de barillet (non illustré) est fixée sur la face interne de la paroi latérale 2.2 du tambour de toute façon conventionnelle à l'aide d'un patin, d'un rivet, d'une goupille, d'un crochet etc.The outer end of the barrel spring (not shown) is fixed to the inner face of the drum side wall 2.2 in any conventional manner using a shoe, a rivet, a pin, a a hook etc.

Le fond 2.1 du tambour 2 comporte un perçage central 2.4 dont le diamètre est supérieur au plus grand diamètre D1 de la face de roulement 1.3 de l'arbre de barillet 1 mais inférieur au diamètre D2 de la face externe 1.2 de la partie centrale 1.1 de cet axe de barillet 1.The bottom 2.1 of the drum 2 has a central bore 2.4 whose diameter is greater than the largest diameter D1 of the rolling face 1.3 of the barrel shaft 1 but less than the diameter D2 of the outer face 1.2 of the central portion 1.1 of this barrel axis 1.

Dans ce perçage central 2.4 du fond 2.1 du tambour 2, sont usinées une première et une seconde faces de roulement 2.5, 2.6 annulaires d'un chemin de roulement externe. Ces faces de roulement 2.5, 2.6 forment un angle de 90° entre elles et chacune d'elles de 45° avec l'axe de l'arbre de barillet 1 ou du tambour 2. Ces deux faces de roulement externes 2.5 et 2.6 constituent un premier chemin de roulement externe pour une série de billes 3 en contact également avec la face de roulement 1.3 de l'arbre de barillet 1.In this central bore 2.4 of the bottom 2.1 of the drum 2, are machined first and second bearing surfaces 2.5, 2.6 annular of an outer race. These bearing surfaces 2.5, 2.6 form an angle of 90 ° between them and each of them of 45 ° with the axis of the barrel shaft 1 or the drum 2. These two outer bearing faces 2.5 and 2.6 constitute a first outer race for a series of balls 3 also in contact with the rolling face 1.3 of the barrel shaft 1.

Une bague 4 est chassée sur une portée 1.4 de l'arbre de barillet 1 et vient buter sur un épaulement 1.5 de cet arbre de barillet 1 dans une position de service pour laquelle une seconde face de roulement 4.1 interne portée par cette bague 4 forme avec la première face de roulement interne 1.3 de l'arbre de barillet 1 un chemin de roulement interne pour les billes 3; le chemin de roulement externe pour ces billes 3 étant formé par les deux faces de roulement 2.5, 2.6 du fond 2.1 du tambour 2.A ring 4 is driven on a bearing surface 1.4 of the barrel shaft 1 and abuts on a shoulder 1.5 of this barrel shaft 1 in a service position for which a second internal rolling face 4.1 carried by this ring 4 forms with the first internal bearing surface 1.3 of the barrel shaft 1 an internal raceway for the balls 3; the external raceway for these balls 3 being formed by the two rolling surfaces 2.5, 2.6 of the bottom 2.1 of the drum 2.

La seconde face de roulement interne 4.1 de la bague 4 forme un angle de 90° avec la première face de roulement interne 1.3 de l'axe de barillet 1, ces deux faces de roulement 1.3 et 4.1 forment toutes deux un angle de 45° avec l'axe de l'arbre de barillet 1 et l'axe du tambour de barillet 2, les deux faces de roulement internes 1.3, 4.1 étant situées en position assemblée du barillet en regard des deux faces de roulement externe 2.5, 2.6.The second inner rolling face 4.1 of the ring 4 forms a 90 ° angle with the first internal rolling face 1.3 of the barrel axis 1, these two rolling faces 1.3 and 4.1 both form an angle of 45 ° with the axis of the barrel shaft 1 and the axis of the barrel drum 2, the two internal running faces 1.3, 4.1 being located in the assembled position of the barrel opposite the two outer bearing faces 2.5, 2.6.

Dans une variante, la bague 4 pourrait être filetée intérieurement et vissée sur un filetage que comporterait la partie 1.4 de l'arbre de barillet 1.In a variant, the ring 4 could be threaded internally and screwed onto a thread that would comprise the portion 1.4 of the barrel shaft 1.

Comme on le voit, ce mode de pivotement du tambour 2 sur l'arbre de barillet 1 est très simple, ne comporte qu'un seul roulement à billes sans cages, les billes 3 roulant directement sur le chemin de roulement externe formé par les faces de roulement 2.5, 2.6 du tambour et sur le chemin de roulement interne formé par la face de roulement 1.3 de l'arbre de barillet 1 et la face de roulement 4.1 de la bague 4.As can be seen, this method of pivoting the drum 2 on the barrel shaft 1 is very simple, has only one ball bearing without cages, the balls 3 rolling directly on the outer race formed by the faces rolling bearing 2.5, 2.6 of the drum and on the inner race formed by the rolling face 1.3 of the barrel shaft 1 and the rolling face 4.1 of the ring 4.

Dans la variante de barillet illustrée, celui-ci comporte encore un couvercle 5 fixé à la paroi périphérique 2.2 du tambour 2 et comportant un trou central 5.1 laissant passer l'arbre de barillet 1. Le bord de ce trou central 5.1 s'appuie contre le bord de la partie centrale 1.1 de cet arbre 1 situé du côté opposé au roulement à billes 3, 2.5, 2.6, 1.3, 4.1. Ce couvercle 5 est optionnel, le barillet fonctionnant parfaitement sans celui-ci.In the barrel variant illustrated, it also comprises a lid 5 fixed to the peripheral wall 2.2 of the drum 2 and having a central hole 5.1 allowing the barrel shaft 1 to pass. The edge of this central hole 5.1 bears against the edge of the central portion 1.1 of this shaft 1 located on the opposite side to the ball bearing 3, 2.5, 2.6, 1.3, 4.1. This lid 5 is optional, the barrel operating perfectly without it.

Le nombre de pièces de cet assemblage est réduit au maximum, ce qui facilite le montage du tambour 2 sur l'arbre de barillet 1.Ce faible nombre de pièces réduit également les coûts d'une telle réalisation. La présence d'un seul roulement à billes garanti un parfait centrage et montage du tambour 2 sur l'arbre de barillet 1 et diminue les forces de friction, ce qui augmente le rendement du barillet.The number of parts of this assembly is reduced to the maximum, which facilitates the mounting of the drum 2 on the barrel shaft 1. This low number of parts also reduces the costs of such an embodiment. The presence of a single ball bearing guarantees perfect centering and mounting of the drum 2 on the barrel shaft 1 and decreases the frictional forces, which increases the efficiency of the barrel.

Enfin, l'absence de cages de roulement à billes simplifie le montage, réduit les coûts et l'encombrement de l'assemblage. Le tambour 2 est ainsi monté sur l'arbre de barillet 1 par un train de billes 3 roulant sur un chemin de roulement externe formé par deux faces de roulements 2.5, 2.6 usinées dans la paroi du perçage central 2.4 du fond 2.1 du tambour de barillet 2 et sur un chemin de roulement interne formé de deux faces de roulements, la première 1.4 étant usinée dans l'arbre de barillet 1 et la seconde 4.1 étant usinée sur une bague 4 fixée sur ledit arbre de barillet 1.Finally, the absence of ball bearing cages simplifies assembly, reduces the cost and overall size of the assembly. The drum 2 is thus mounted on the barrel shaft 1 by a train of balls 3 rolling on a raceway outer face formed by two bearing faces 2.5, 2.6 machined in the wall of the central bore 2.4 of the bottom 2.1 of the barrel drum 2 and on an internal raceway formed of two bearing faces, the first 1.4 being machined in the shaft of barrel 1 and the second 4.1 being machined on a ring 4 fixed on said barrel shaft 1.

Claims (11)

Barillet pour pièce ou mouvement d'horlogerie comportant un arbre de barillet (1), un tambour de barillet (2) renfermant un ressort moteur dont l'extrémité intérieure est fixée à l'arbre de barillet (1) tandis que l'extrémité extérieure est fixée au tambour de barillet (2), caractérisé par le fait que le tambour de barillet (2) est monté rotatif sur l'arbre de barillet (1) par un seul roulement à billes (3) situé entre l'arbre de barillet (1) et le fond (2.1) du tambour de barillet (2).Coin or watch movement cylinder comprising a barrel shaft (1), a barrel drum (2) enclosing a motor spring whose inner end is fixed to the barrel shaft (1) while the outer end is attached to the barrel drum (2), characterized in that the barrel drum (2) is rotatably mounted on the barrel shaft (1) by a single ball bearing (3) located between the barrel shaft (1) and the bottom (2.1) of the barrel drum (2). Barillet selon la revendication 1, caractérisé par le fait que le fond (2.1) du tambour (2) comporte un perçage (2.4) dans la paroi cylindrique duquel sont usinées une première et une seconde faces de roulement annulaires externes (2.5, 2.6) formant un angle de 90° entre elles et de 45° chacune avec l'axe de l'arbre de barillet (1) ou du tambour (2), ces deux faces de roulement (2.5, 2.6) formant le chemin de roulement extérieur des billes (3).Barrel according to claim 1, characterized in that the bottom (2.1) of the drum (2) has a bore (2.4) in the cylindrical wall of which are machined first and second outer annular bearing faces (2.5, 2.6) forming an angle of 90 ° between them and 45 ° each with the axis of the barrel shaft (1) or the drum (2), these two bearing faces (2.5, 2.6) forming the outer race of the balls (3). Barillet selon la revendication 2, caractérisé par le fait que le chemin de roulement interne des billes (3) comporte une première face de roulement (1.3) interne usinée dans l'arbre de barillet (1) et une seconde face de roulement interne (4.1) faisant partie d'une bague (4) fixée sur l'arbre de barillet (1).Cylinder according to claim 2, characterized in that the internal raceway of the balls (3) has a first inner rolling face (1.3) machined in the barrel shaft (1) and a second inner rolling face (4.1). ) forming part of a ring (4) fixed on the barrel shaft (1). Barillet selon la revendication 3, caractérisé par le fait que la bague (4) est chassée ou vissée sur une partie (1.4) de l'arbre de barillet.Barrel according to claim 3, characterized in that the ring (4) is driven or screwed onto a portion (1.4) of the barrel shaft. Barillet selon l'une des revendications précédentes, caractérisé par le fait que la paroi extérieure cylindrique (2.2) du tambour (2) porte une denture (2.3).Barrel according to one of the preceding claims, characterized in that the cylindrical outer wall (2.2) of the drum (2) carries a toothing (2.3). Barillet selon l'une des revendications précédentes, caractérisé par le fait que le tambour de barillet (2) comporte un couvercle (5) fixé par son bord extérieur sur la paroi périphérique (2.2) du tambour (2).Barrel according to one of the preceding claims, characterized in that the barrel drum (2) has a lid (5) fixed by its outer edge to the peripheral wall (2.2) of the drum (2). Barillet pour pièce d'horlogerie comportant un axe de barillet (1) et un tambour de barillet (2), caractérisé par le fait que la tranche interne du fond (2.1) du tambour (2) comporte une première (2.5) et une seconde (2.6) faces de roulement externes; par le fait qu'une première face de roulement interne (1.3) est usinée dans l'arbre de barillet (1); par le fait qu'une seconde face de roulement interne (4.1) est portée par une bague (4) fixée sur un épaulement (1.4) de l'arbre de barillet (1); et par le fait qu'un train de billes (3) est situé entre les deux faces de roulement internes (1.3, 4.1) et les deux faces de roulement externes (2.5, 2.6).Timepiece barrel comprising a barrel axis (1) and a barrel drum (2), characterized in that the inner portion of the bottom (2.1) of the drum (2) has a first (2.5) and a second (2.6) outer rolling faces; in that a first inner rolling face (1.3) is machined in the barrel shaft (1); in that a second inner rolling face (4.1) is carried by a ring (4) fixed on a shoulder (1.4) of the barrel shaft (1); and in that a bead train (3) is located between the two inner running faces (1.3, 4.1) and the two outer rolling faces (2.5, 2.6). Barillet selon la revendication 7, caractérisé par le fait que la bague (4) est chassée ou vissée sur une partie (1.4) de l'arbre de barillet.Barrel according to claim 7, characterized in that the ring (4) is driven or screwed onto a portion (1.4) of the barrel shaft. Barillet selon l'une des revendications 7 ou 8, caractérisé par le fait que la paroi extérieure cylindrique (2.2) du tambour (2) porte une denture (2.3).Barrel according to one of claims 7 or 8, characterized in that the cylindrical outer wall (2.2) of the drum (2) carries a toothing (2.3). Barillet selon l'une des revendications 7, 8 ou 9, caractérisé par le fait que le tambour de barillet (2) comporte un couvercle (5) fixé par son bord extérieur sur la paroi périphérique (2.2) du tambour (2).Barrel according to one of claims 7, 8 or 9, characterized in that the barrel drum (2) has a lid (5) fixed by its outer edge on the peripheral wall (2.2) of the drum (2). Pièce d'horlogerie munie d'un barillet selon l'une des revendications précédentes.Timepiece with a barrel according to one of the preceding claims.
EP20080011150 2007-10-22 2008-06-19 Barrel for a timepiece Withdrawn EP2053473A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH16472007 2007-10-22

Publications (1)

Publication Number Publication Date
EP2053473A2 true EP2053473A2 (en) 2009-04-29

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ID=39584191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080011150 Withdrawn EP2053473A2 (en) 2007-10-22 2008-06-19 Barrel for a timepiece

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EP (1) EP2053473A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR403943A (en) 1909-06-11 1909-11-18 Karl Schwan Long-run clockwork movement with lever escapement
CH390801A (en) 1962-02-23 1964-12-31 A & M Fell Ltd Clock with a drive for another mechanism
JPH11174162A (en) 1997-12-11 1999-07-02 Seiko Instruments Inc Barrel wheel and mechanical time piece

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR403943A (en) 1909-06-11 1909-11-18 Karl Schwan Long-run clockwork movement with lever escapement
CH390801A (en) 1962-02-23 1964-12-31 A & M Fell Ltd Clock with a drive for another mechanism
JPH11174162A (en) 1997-12-11 1999-07-02 Seiko Instruments Inc Barrel wheel and mechanical time piece

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