EP2570865A1 - Clock barrel assembly with reduced core diameter - Google Patents

Clock barrel assembly with reduced core diameter Download PDF

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Publication number
EP2570865A1
EP2570865A1 EP11181355A EP11181355A EP2570865A1 EP 2570865 A1 EP2570865 A1 EP 2570865A1 EP 11181355 A EP11181355 A EP 11181355A EP 11181355 A EP11181355 A EP 11181355A EP 2570865 A1 EP2570865 A1 EP 2570865A1
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EP
European Patent Office
Prior art keywords
drum
bung
barrel assembly
pivot axis
barrel
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
EP11181355A
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German (de)
French (fr)
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EP2570865B1 (en
Inventor
Alain Zaugg
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.)
Montres Breguet SA
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Montres Breguet 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 Montres Breguet SA filed Critical Montres Breguet SA
Priority to EP20110181355 priority Critical patent/EP2570865B1/en
Publication of EP2570865A1 publication Critical patent/EP2570865A1/en
Application granted granted Critical
Publication of EP2570865B1 publication Critical patent/EP2570865B1/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
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor

Definitions

  • the invention relates to a barrel assembly for a mechanical watch with reduced bung diameter.
  • the invention also relates to a watch movement comprising at least one such barrel assembly.
  • the invention also relates to a timepiece comprising at least one such movement and / or at least one such barrel assembly.
  • the invention relates to the field of watchmaking, and more particularly the field of energy storage barrels, for feeding a movement, a ring, or other functionality of a room watchmaking.
  • one solution consists of a decrease in the diameter of the barrel shaft and the associated bung, so as to increase the space available in the drum. for the spring.
  • the ratio of the bead radius to the thickness of the spring is usually between 10 and 20, and the invention proposes to lower this ratio below 10, and preferably in the range between 5 and 10.
  • a ratchet is mounted axially on a barrel axis or on a bung, via a square, the ratchet being generally fixed by an axial screw.
  • the size of this screw and that of the square thus condition a minimum diameter of a pivoting surface.
  • a shoulder abutting with this pivoting surface limits axial fretting of the shaft or the bung relative to a plate or bridge carrying a stone or the like.
  • a diameter even greater than that of this shoulder is necessary for a pivoting guide surface of the drum on the shaft or on the bung, combined with a shoulder limiting axial fretting of the drum.
  • the respect of minimal sections of matter implies a quotation chain which results in a large size, difficult to reduce. In particular, it is not enough to reduce all the sizing, because the sections of material are then insufficient to ensure fatigue resistance.
  • the invention proposes to set up a solution allowing a significant reduction of the bung diameter compared to the prior art.
  • the invention relates to a watch barrel assembly, arranged to be mounted on a plate or / and a bridge of a movement or a timepiece, and comprising at least one mounted barrel motor spring.
  • a watch barrel assembly arranged to be mounted on a plate or / and a bridge of a movement or a timepiece, and comprising at least one mounted barrel motor spring.
  • the maximum radius of said bung with respect to said pivot axis is less than ten times the maximum thickness of said spring, in that said bung is guided in pivoting about said pivot axis by first pivoting guide means arranged to cooperate as appropriate with said plate or said bridge, in that said drum is pivotally guided about said pivot axis by second guide means in peripheral pivoting arranged to cooperate as appropriate with said plate or said bridge.
  • said receiving surface is a surface of revolution with respect to said pivot axis.
  • said spring is enclosed in a chamber delimited by said drum and a lid which is mounted integral with said bung.
  • said cover is a ratchet arranged to receive or transmit the energy stored by said spring in said barrel assembly.
  • said first pivoting guide means are constituted by at least one ball bearing, of which an inner cage is guided on a first cylindrical surface that said bunghole comprises along said pivot axis, and comes in direct bearing. or indirectly against a second range that includes said bung and which extends perpendicularly to said pivot axis.
  • said ball bearing comprises an outer cage arranged to be fixed on said plate or said bridge.
  • said second pivoting guide means comprise at least three ball bearings, arranged to be fixed on said plate or said bridge, and external to said drum with which a cage of each of said bearings cooperates by support at a peripheral guiding surface of said drum.
  • a first non-zero axial clearance exists between the axial end of said drum shaft and a bottom that includes said bore of said bung, said bore being blind.
  • a second non-zero axial clearance exists between an axial end of said bung, and an opposing surface that includes said drum around said drum shaft at a drum bottom.
  • said spring is fixed to said bung by friction.
  • said spring is welded or brazed to said bung so as to form a monoblock spring-binder subassembly.
  • the invention also relates to a movement comprising at least one such barrel assembly for storing energy with an input constituted by either a ratchet pivotally mounted on said bung or by a toothing of a drum mounted to pivot on said drum. , and an outlet constituted respectively, or by a toothing drum pivotally integral with said drum, or by a ratchet integral pivotally of said bung.
  • the invention also relates to a timepiece comprising at least one such clockwork movement and / or at least one such barrel assembly for energy storage with an incorporated input, or else a ratchet mounted pivotally to said bonde or by a toothing drum mounted pivotally integral with said drum, and an outlet respectively constituted by a toothing drum mounted integral pivoting said drum, or by a ratchet integral pivotally of said bung.
  • the invention relates to the field of watchmaking, and more particularly the field of energy storage barrels, for feeding a movement, a ring, or other functionality of a room watchmaking.
  • the invention relates to a mechanical watch cylinder with reduced bung diameter.
  • the figure 1 a watch cylinder 1 according to the invention, with guiding of its plug 4 on a ball bearing 15, and guiding the drum 3 on other ball bearings 16, and a coaxial guide of the plug 4 with the drum 3 at the pivot axis D of the assembly.
  • the invention relates to a watch barrel assembly 1 comprising at least one mainspring 2 of the barrel.
  • This spring 2 is mounted in torsion between, at a first end 21 a barrel drum 3, and at a second end 22 a receiving surface 5 which comprises a barrel plug 4 coaxial with the drum 3 about a pivot axis D.
  • the maximum radius of the bung 4 with respect to the pivot axis D is less than ten times, and preferably less than six times, the maximum thickness of the spring 2.
  • the barrel 1 clock assembly is arranged to be mounted on a plate 10 and / or a bridge 11 of a movement 100 or a timepiece 1000.
  • the bung 4 comprises a bore 411 pivoting on a bearing surface 141 which comprises a drum shaft 14 integral with the drum 3.
  • This central guide is particularly advantageous for handling the barrel out of motion. It guarantees a good assembly in spare part.
  • pivoting is provided, according to the invention, by first pivoting guide means 15 for the plug 4, and by second peripheral pivoting guide means 16 for the drum 3.
  • the bung 4 is pivotally guided about the pivot axis D by first pivoting guide means 15 arranged to cooperate as appropriate with the plate 10 or the bridge 11.
  • the drum 3 is pivotally guided about the pivot axis D by second means of pivoting guidance 16 peripherals. These are arranged to cooperate, as the case may be, with the plate 10 or the bridge 11.
  • the barrel assembly 1 further comprises, at the level of the first pivoting guide means 15 on the one hand and at the second pivoting guide means 16 on the other hand, adjustment means the longitudinal gap 6, in the direction of the pivot axis D, between the plate 10 or the bridge 11 on the one hand and respectively the drum 3 or the bung 4 on the other hand, in particular by wedging the cages of the ball bearings preferably constituting the first pivot guide means 15 and the second pivot guide means 16.
  • the receiving surface 5 at the bung 4 is a surface of revolution with respect to the pivot axis D.
  • the spring 2 is enclosed in a chamber 32 delimited by the drum 3 and a lid 7 which is mounted integral with the bung 4.
  • the cover 7 is constituted by a ratchet 12 arranged to receive or transmit the energy stored by the spring 2 in the barrel assembly 1.
  • a cover 7 is fixed on the drum 3, while the bung 4, or a barrel shaft 14 cooperating with this bung 4, carries such a ratchet 12.
  • the first pivoting guide means 15 are constituted by at least one ball bearing, of which an internal cage 15A is guided on a first cylindrical surface 415 that the bung 4 comprises along the axis of pivoting D, and bears directly or indirect against a second bearing 414 that includes the bung 4 and extending perpendicularly to the pivot axis D.
  • This ball bearing comprises an outer cage 15B arranged to be fixed on the plate 10 or the bridge 11, according to the figure 1 .
  • the second pivot guide means 16 comprise at least three ball bearings or the like, such as rollers or guide pads, arranged to be fixed on the plate 10 or the bridge 11, and outside the drum 3 with which a cage of each of the bearings cooperates by bearing at a peripheral guiding surface 17 of the drum 3.
  • a first non-zero axial play J1 exists between the axial end of the drum shaft 14 and a bottom 416 that the bore 411 of the bung 4 comprises.
  • a second non-zero axial clearance J2 exists between an axial end 417 of the bung 4, and an opposing surface 418 that the drum 3 comprises around the drum shaft 14 at a drum bottom 473.
  • the bung 4 is here driven on the barrel shaft 14, by the cooperation of a bore 411 of the bung 4 with a bearing 141 of the shaft 14.
  • the figures illustrate a fat adjustment on a reduced surface, located in the vicinity end 417 of the shaft 14. Beyond, the plug 4 and the shaft 14 are separated by a clearance J3 positive or zero. Naturally, the bore 411 of the bung 4 and the bearing 141 of the shaft 14 of the drum 3 can be separated over their entire length by a clearance J3 guaranteeing only the passage of one into the other.
  • the spring 2 is fixed to the bung 4 by friction.
  • the spring 2 is welded or brazed to the bung 4 so as to form a subset one-piece bung spring.
  • the figure 4 represents a barrel similar to that of the figure 1 , with attachment of the spring 2 on a hook 41 of the bung 4, it is the same on the figure 5 this hook 41 is visible on the figure 2 illustrating the bung of the figure 1 .
  • the figure 5 represents a variant where the bung 4 and the drum 3 are independent, the drum 3 is guided by the second peripheral 16 pivoting guide means, here constituted by bearings, while the bung is mounted cantilevered and guided by the first pivot guide means 15, here constituted by a ball bearing.
  • the invention also relates to a watchmaking movement 100 comprising at least one such barrel assembly 1 for storing energy with an incorporated input, or else a ratchet 12 pivotally mounted on the plug 4, or by a set of teeth drum 13 mounted pivotally mounted to the drum 3, and an outlet respectively formed, or by a toothing drum 13 mounted pivotally integral with the drum 3, or by a ratchet 12 mounted pivotally integral with the bung 4.
  • the invention also relates to a timepiece 1000 comprising at least one watch movement 100 and / or at least one such barrel assembly 1 for energy storage with an incorporated input, or a ratchet 12 mounted solidarity pivoting the bung 4, or by a toothing drum 13 mounted pivotally integral with the drum 3, and an output constituted respectively, or by a toothing drum 13 mounted to pivotally attached to the drum 3, or by a ratchet 12 mounted pivotally integral with the bung 4.

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

Abstract

The assembly (1) has a drive spring (2), and a barrel drum (3) at an end (21). A reception surface (5) is arranged at another end (22). The reception surface comprises a barrel plug (4) that is arranged coaxial to the barrel drum around a fulcrum axis (D). The plug is guided around the axis, and the drum is guided in a swiveling manner around the axis by a guidance unit (16) that is arranged peripherally to cooperate with a turntable (10) or bridge (11). An independent claim is also included for a clockwork.

Description

Domaine de l'inventionField of the invention

L'invention concerne un ensemble barillet pour montre mécanique avec diamètre de bonde réduit.The invention relates to a barrel assembly for a mechanical watch with reduced bung diameter.

L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel ensemble barillet.The invention also relates to a watch movement comprising at least one such barrel assembly.

L'invention concerne encore une pièce d'horlogerie comportant au moins un tel mouvement ou/et au moins un tel ensemble barillet.The invention also relates to a timepiece comprising at least one such movement and / or at least one such barrel assembly.

L'invention concerne le domaine de l'horlogerie, et plus particulièrement le domaine des barillets de stockage d'énergie, pour l'alimentation d'un mouvement, d'une sonnerie, ou d'une autre fonctionnalité d'une pièce d'horlogerie.The invention relates to the field of watchmaking, and more particularly the field of energy storage barrels, for feeding a movement, a ring, or other functionality of a room watchmaking.

Arrière-plan de l'inventionBackground of the invention

Pour augmenter la réserve de marche, par augmentation du nombre de tours d'un ressort de barillet, une solution consiste en une diminution du diamètre de l'arbre de barillet et de la bonde associée, de façon à augmenter la place disponible dans le tambour pour le ressort.To increase the power reserve, by increasing the number of turns of a mainspring, one solution consists of a decrease in the diameter of the barrel shaft and the associated bung, so as to increase the space available in the drum. for the spring.

Le rapport du rayon de bonde par rapport à l'épaisseur du ressort est usuellement compris entre 10 et 20, et l'invention se propose d'abaisser ce rapport en-dessous de 10, et préférentiellement dans la plage comprise entre 5 et 10.The ratio of the bead radius to the thickness of the spring is usually between 10 and 20, and the invention proposes to lower this ratio below 10, and preferably in the range between 5 and 10.

Le dimensionnement ne doit pas être fait à la légère, en effet un risque de casse existe sir le diamètre de la bonde est trop faible.Sizing should not be done lightly, indeed a risk of breakage exists if the diameter of the plug is too small.

Dans l'architecture classique des barillets, un rochet est monté axialement sur un axe de barillet ou sur une bonde, par l'intermédiaire d'un carré, le rochet étant généralement fixé par une vis axiale. La dimension de cette vis et celle du carré conditionnent donc un diamètre minimal d'une portée de pivotement. Un épaulement jointif à cette portée de pivotement limite l'ébat axial de l'arbre ou de la bonde par rapport à une platine ou à un pont porteur d'une pierre ou similaire.In the conventional architecture of the barrels, a ratchet is mounted axially on a barrel axis or on a bung, via a square, the ratchet being generally fixed by an axial screw. The size of this screw and that of the square thus condition a minimum diameter of a pivoting surface. A shoulder abutting with this pivoting surface limits axial fretting of the shaft or the bung relative to a plate or bridge carrying a stone or the like.

Un diamètre encore supérieur à celui de cet épaulement est nécessaire pour une portée de guidage en pivotement du tambour sur l'arbre ou sur la bonde, combinée à un épaulement de limitation de l'ébat axial du tambour. Le respect de sections de matière minimales implique une chaîne de cotation qui se traduit par un encombrement conséquent, difficile à réduire. On ne peut en particulier pas se contenter de réduire l'ensemble des dimensionnements, car les sections de matière sont alors insuffisantes pour assurer la tenue en fatigue.A diameter even greater than that of this shoulder is necessary for a pivoting guide surface of the drum on the shaft or on the bung, combined with a shoulder limiting axial fretting of the drum. The respect of minimal sections of matter implies a quotation chain which results in a large size, difficult to reduce. In particular, it is not enough to reduce all the sizing, because the sections of material are then insufficient to ensure fatigue resistance.

Résumé de l'inventionSummary of the invention

Du fait de ces limites physiques au dimensionnement des différents composants, il est nécessaire d'envisager d'autres architectures de barillet que l'architecture classique qui vient d'être décrite.Because of these physical limitations to the dimensioning of the various components, it is necessary to consider other barrel architectures than the conventional architecture that has just been described.

Une contrainte importante est d'assurer la démontabilité de l'ensemble, pour un éventuel échange du ressort de barillet.An important constraint is to ensure the disassembly of the assembly, for a possible exchange of the mainspring.

L'invention se propose de mettre en place une solution permettant une diminution importante du diamètre de bonde par rapport à l'art antérieur.The invention proposes to set up a solution allowing a significant reduction of the bung diameter compared to the prior art.

A cet effet, l'invention concerne un ensemble barillet d'horlogerie, agencé pour être monté sur une platine ou/et un pont d'un mouvement ou d'une pièce d'horlogerie, et comportant au moins un ressort moteur de barillet monté en torsion entre, à une première extrémité un tambour de barillet, et à une deuxième extrémité une surface de réception que comporte une bonde de barillet coaxiale audit tambour autour d'un axe de pivotement, caractérisé en ce que le rayon maximal de ladite bonde par rapport audit axe de pivotement est inférieur à dix fois l'épaisseur maximale dudit ressort, en ce que ladite bonde est guidée en pivotement autour dudit axe de pivotement par des premiers moyens de guidage en pivotement agencés pour coopérer selon le cas avec ladite platine ou ledit pont, en ce que ledit tambour est guidé en pivotement autour dudit axe de pivotement par des seconds moyens de guidage en pivotement périphériques agencés pour coopérer selon le cas avec ladite platine ou ledit pont.For this purpose, the invention relates to a watch barrel assembly, arranged to be mounted on a plate or / and a bridge of a movement or a timepiece, and comprising at least one mounted barrel motor spring. in torsion between, at one end a barrel drum, and at a second end a receiving surface that comprises a barrel plug coaxial with said drum about a pivot axis, characterized in that the maximum radius of said bung with respect to said pivot axis is less than ten times the maximum thickness of said spring, in that said bung is guided in pivoting about said pivot axis by first pivoting guide means arranged to cooperate as appropriate with said plate or said bridge, in that said drum is pivotally guided about said pivot axis by second guide means in peripheral pivoting arranged to cooperate as appropriate with said plate or said bridge.

Selon une caractéristique de l'invention, ladite surface de réception est une surface de révolution par rapport audit axe de pivotement.According to a characteristic of the invention, said receiving surface is a surface of revolution with respect to said pivot axis.

Selon une caractéristique de l'invention, ledit ressort est enfermé dans une chambre délimitée par ledit tambour et un couvercle lequel est monté solidaire de ladite bonde.According to a characteristic of the invention, said spring is enclosed in a chamber delimited by said drum and a lid which is mounted integral with said bung.

Selon une caractéristique de l'invention, ledit couvercle est un rochet agencé pour recevoir ou transmettre l'énergie stockée par ledit ressort dans ledit ensemble barillet.According to a characteristic of the invention, said cover is a ratchet arranged to receive or transmit the energy stored by said spring in said barrel assembly.

Selon une caractéristique de l'invention, lesdits premiers moyens de guidage en pivotement sont constitués par au moins un roulement à billes dont une cage interne est guidée sur une première portée cylindrique que comporte ladite bonde selon ledit axe de pivotement, et vient en appui direct ou indirect contre une deuxième portée que comporte ladite bonde et qui s'étend perpendiculairement audit axe de pivotement.According to one characteristic of the invention, said first pivoting guide means are constituted by at least one ball bearing, of which an inner cage is guided on a first cylindrical surface that said bunghole comprises along said pivot axis, and comes in direct bearing. or indirectly against a second range that includes said bung and which extends perpendicularly to said pivot axis.

Selon une caractéristique de l'invention, ledit roulement à billes comporte une cage externe agencée pour être fixée sur ladite platine ou ledit pont.According to a feature of the invention, said ball bearing comprises an outer cage arranged to be fixed on said plate or said bridge.

Selon une caractéristique de l'invention, lesdits seconds moyens de guidage en pivotement comportent au moins trois roulements à billes, agencés pour être fixés sur ladite platine ou ledit pont, et extérieurs audit tambour avec lequel une cage de chacun desdits roulements coopère par appui au niveau d'une surface périphérique de guidage dudit tambour.According to one characteristic of the invention, said second pivoting guide means comprise at least three ball bearings, arranged to be fixed on said plate or said bridge, and external to said drum with which a cage of each of said bearings cooperates by support at a peripheral guiding surface of said drum.

Selon une caractéristique de l'invention, un premier jeu axial non nul existe entre l'extrémité axiale dudit arbre de tambour et un fond que comporte ledit alésage de ladite bonde, ledit alésage étant borgne.According to a feature of the invention, a first non-zero axial clearance exists between the axial end of said drum shaft and a bottom that includes said bore of said bung, said bore being blind.

Selon une caractéristique de l'invention, un second jeu axial non nul existe entre une extrémité axiale de ladite bonde, et une surface antagoniste que comporte ledit tambour autour dudit arbre de tambour au niveau d'un fond de tambour.According to a feature of the invention, a second non-zero axial clearance exists between an axial end of said bung, and an opposing surface that includes said drum around said drum shaft at a drum bottom.

Selon une caractéristique de l'invention, ledit ressort est fixé à ladite bonde par friction.According to a characteristic of the invention, said spring is fixed to said bung by friction.

Selon une caractéristique de l'invention, ledit ressort est soudé ou brasé à ladite bonde de façon à former un sous-ensemble ressort-bonde monobloc.According to a characteristic of the invention, said spring is welded or brazed to said bung so as to form a monoblock spring-binder subassembly.

L'invention concerne encore un mouvement comportant au moins un tel ensemble barillet pour le stockage d'énergie avec une entrée constituée, ou bien par un rochet monté solidaire en pivotement de ladite bonde ou bien par une denture de tambour montée solidaire en pivotement dudit tambour, et une sortie constituée respectivement, ou bien par une denture de tambour montée solidaire en pivotement dudit tambour, ou bien par un rochet monté solidaire en pivotement de ladite bonde.The invention also relates to a movement comprising at least one such barrel assembly for storing energy with an input constituted by either a ratchet pivotally mounted on said bung or by a toothing of a drum mounted to pivot on said drum. , and an outlet constituted respectively, or by a toothing drum pivotally integral with said drum, or by a ratchet integral pivotally of said bung.

L'invention concerne encore une pièce d'horlogerie comportant au moins un tel mouvement d'horlogerie ou/et au moins un tel ensemble barillet pour le stockage d'énergie avec une entrée constituée, ou bien par un rochet monté solidaire en pivotement de ladite bonde ou bien par une denture de tambour montée solidaire en pivotement dudit tambour, et une sortie constituée respectivement, ou bien par une denture de tambour montée solidaire en pivotement dudit tambour, ou bien par un rochet monté solidaire en pivotement de ladite bonde.The invention also relates to a timepiece comprising at least one such clockwork movement and / or at least one such barrel assembly for energy storage with an incorporated input, or else a ratchet mounted pivotally to said bonde or by a toothing drum mounted pivotally integral with said drum, and an outlet respectively constituted by a toothing drum mounted integral pivoting said drum, or by a ratchet integral pivotally of said bung.

Description sommaire des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention apparaîtront mieux à la lecture de la description détaillée qui va suivre, en référence aux dessins annexés, où:

  • la figure 1 représente, de façon schématisée et en coupe dans un plan passant par son axe de pivotement, un barillet d'horlogerie selon l'invention, avec guidage de la bonde sur un roulement à billes, et guidage du tambour sur d'autres roulements à billes, et un guidage coaxial de la bonde avec le tambour au niveau de l'axe de pivotement,
  • la figure 2 représente, de façon schématisée et en perspective, une bonde de barillet selon l'invention,
  • la figure 3 représente, sous forme d'un schéma-blocs, un mouvement d'horlogerie comportant un ensemble barillet selon l'invention, et une pièce d'horlogerie comportant ce mouvement et un ensemble barillet selon l'invention,
  • la figure 4 représente un barillet similaire à celui de la figure 1, avec accrochage du ressort sur un crochet de la bonde,
  • la figure 5 représente une variante où la bonde et le tambour sont indépendants,
Other characteristics and advantages of the invention will appear better on reading the detailed description which follows, with reference to the appended drawings, in which:
  • the figure 1 represents, schematically and in section in a plane passing through its pivot axis, a watch cylinder according to the invention, with guide of the bung on a ball bearing, and guide the drum on other ball bearings , and a coaxial guide of the bung with the drum at the pivot axis,
  • the figure 2 represents schematically and in perspective, a barrel plug according to the invention,
  • the figure 3 represents, in the form of a block diagram, a watch movement comprising a barrel assembly according to the invention, and a timepiece comprising this movement and a barrel assembly according to the invention,
  • the figure 4 represents a barrel similar to that of the figure 1 , with hooking of the spring on a hook of the bung,
  • the figure 5 represents a variant where the bung and the drum are independent,

Description détaillée des modes de réalisation préférésDetailed Description of the Preferred Embodiments

L'invention concerne le domaine de l'horlogerie, et plus particulièrement le domaine des barillets de stockage d'énergie, pour l'alimentation d'un mouvement, d'une sonnerie, ou d'une autre fonctionnalité d'une pièce d'horlogerie.The invention relates to the field of watchmaking, and more particularly the field of energy storage barrels, for feeding a movement, a ring, or other functionality of a room watchmaking.

Plus particulièrement, l'invention concerne un barillet pour montre mécanique avec diamètre de bonde réduit.More particularly, the invention relates to a mechanical watch cylinder with reduced bung diameter.

La figure 1 un barillet d'horlogerie 1 selon l'invention, avec guidage de sa bonde 4 sur un roulement à billes15, et guidage du tambour 3 sur d'autres roulements à billes 16, et un guidage coaxial de la bonde 4 avec le tambour 3 au niveau de l'axe de pivotement D de l'ensemble.The figure 1 a watch cylinder 1 according to the invention, with guiding of its plug 4 on a ball bearing 15, and guiding the drum 3 on other ball bearings 16, and a coaxial guide of the plug 4 with the drum 3 at the pivot axis D of the assembly.

Dans une version particulière, l'invention concerne un ensemble barillet 1 d'horlogerie, comportant au moins un ressort moteur 2 de barillet. Ce ressort 2 est monté en torsion entre, à une première extrémité 21 un tambour 3 de barillet, et à une deuxième extrémité 22 une surface de réception 5 que comporte une bonde 4 de barillet coaxiale à ce tambour 3 autour d'un axe de pivotement D.In a particular version, the invention relates to a watch barrel assembly 1 comprising at least one mainspring 2 of the barrel. This spring 2 is mounted in torsion between, at a first end 21 a barrel drum 3, and at a second end 22 a receiving surface 5 which comprises a barrel plug 4 coaxial with the drum 3 about a pivot axis D.

Selon l'invention le rayon maximal de la bonde 4 par rapport à l'axe de pivotement D est inférieur à dix fois, et préférentiellement inférieur à six fois, l'épaisseur maximale du ressort 2.According to the invention the maximum radius of the bung 4 with respect to the pivot axis D is less than ten times, and preferably less than six times, the maximum thickness of the spring 2.

L'ensemble barillet 1 d'horlogerie est agencé pour être monté sur une platine 10 ou/et un pont 11 d'un mouvement 100 ou d'une pièce d'horlogerie 1000.The barrel 1 clock assembly is arranged to be mounted on a plate 10 and / or a bridge 11 of a movement 100 or a timepiece 1000.

Selon l'invention, dans la version illustrée sur les figures 1 et 4, la bonde 4 comporte un alésage 411 pivotant sur une portée 141 que comporte un arbre de tambour 14 solidaire du tambour 3. Ce guidage central est particulièrement avantageux pour la manutention du barillet hors mouvement. Il garantit un bon assemblage en pièce détachée.According to the invention, in the illustrated version on the figures 1 and 4 , the bung 4 comprises a bore 411 pivoting on a bearing surface 141 which comprises a drum shaft 14 integral with the drum 3. This central guide is particularly advantageous for handling the barrel out of motion. It guarantees a good assembly in spare part.

En mouvement, les pivotements sont assurés, selon l'invention, par des premiers moyens de guidage en pivotement 15 pour la bonde 4, et par des seconds moyens de guidage en pivotement 16 périphériques pour le tambour 3.In motion, pivoting is provided, according to the invention, by first pivoting guide means 15 for the plug 4, and by second peripheral pivoting guide means 16 for the drum 3.

Tel que visible sur les figures 1, 4 et 5, la bonde 4 est guidée en pivotement autour de l'axe de pivotement D par des premiers moyens de guidage en pivotement 15 agencés pour coopérer selon le cas avec la platine 10 ou le pont 11.As visible on the figures 1 , 4 and 5 , the bung 4 is pivotally guided about the pivot axis D by first pivoting guide means 15 arranged to cooperate as appropriate with the plate 10 or the bridge 11.

Tel que visible sur les figures 1, 4 et 5, le tambour 3 est guidé en pivotement autour de l'axe de pivotement D par des seconds moyens de guidage en pivotement 16 périphériques. Ceux-ci sont agencés pour coopérer, selon le cas, avec la platine 10 ou le pont 11.As visible on the figures 1 , 4 and 5 , the drum 3 is pivotally guided about the pivot axis D by second means of pivoting guidance 16 peripherals. These are arranged to cooperate, as the case may be, with the plate 10 or the bridge 11.

Dans une variante non illustrée, l'ensemble barillet 1 comporte encore, au niveau des premiers moyens de guidage en pivotement 15 d'une part et au niveau des seconds moyens de guidage en pivotement 16 périphériques d'autre part, des moyens d'ajustement de l'ébat longitudinal 6, selon la direction de l'axe de pivotement D, entre la platine 10 ou le pont 11 d'une part et respectivement le tambour 3 ou la bonde 4 d'autre part, notamment par calage des cages des roulements à billes constituant de préférence les premiers moyens de guidage en pivotement 15 et les seconds moyens de guidage en pivotement 16.In a variant not illustrated, the barrel assembly 1 further comprises, at the level of the first pivoting guide means 15 on the one hand and at the second pivoting guide means 16 on the other hand, adjustment means the longitudinal gap 6, in the direction of the pivot axis D, between the plate 10 or the bridge 11 on the one hand and respectively the drum 3 or the bung 4 on the other hand, in particular by wedging the cages of the ball bearings preferably constituting the first pivot guide means 15 and the second pivot guide means 16.

Dans une réalisation particulière, la surface de réception 5 au niveau de la bonde 4 est une surface de révolution par rapport à l'axe de pivotement D.In a particular embodiment, the receiving surface 5 at the bung 4 is a surface of revolution with respect to the pivot axis D.

Dans la variante illustrée par la figure 1, le ressort 2 est enfermé dans une chambre 32 délimitée par le tambour 3 et un couvercle 7 lequel est monté solidaire de la bonde 4.In the variant illustrated by the figure 1 , the spring 2 is enclosed in a chamber 32 delimited by the drum 3 and a lid 7 which is mounted integral with the bung 4.

Dans cette même variante, le couvercle 7 est constitué par un rochet 12 agencé pour recevoir ou transmettre l'énergie stockée par le ressort 2 dans l'ensemble barillet 1. Dans d'autres variantes non représentées sur les figures, un couvercle 7 est fixé sur le tambour 3, tandis que la bonde 4, ou un arbre de barillet 14 coopérant avec cette bonde 4, porte un tel rochet 12.In this same variant, the cover 7 is constituted by a ratchet 12 arranged to receive or transmit the energy stored by the spring 2 in the barrel assembly 1. In other variants not shown in the figures, a cover 7 is fixed on the drum 3, while the bung 4, or a barrel shaft 14 cooperating with this bung 4, carries such a ratchet 12.

Dans la réalisation préférée illustrée par les figures 1 et 1A, les premiers moyens de guidage en pivotement 15 sont constitués par au moins un roulement à billes dont une cage interne 15A est guidée sur une première portée 415 cylindrique que comporte la bonde 4 selon l'axe de pivotement D, et vient en appui direct ou indirect contre une deuxième portée 414 que comporte la bonde 4 et qui s'étend perpendiculairement à l'axe de pivotement D.In the preferred embodiment illustrated by the figures 1 and 1A , the first pivoting guide means 15 are constituted by at least one ball bearing, of which an internal cage 15A is guided on a first cylindrical surface 415 that the bung 4 comprises along the axis of pivoting D, and bears directly or indirect against a second bearing 414 that includes the bung 4 and extending perpendicularly to the pivot axis D.

Ce roulement à billes comporte une cage externe 15B agencée pour être fixée sur la platine 10 ou le pont 11, selon la figure 1.This ball bearing comprises an outer cage 15B arranged to be fixed on the plate 10 or the bridge 11, according to the figure 1 .

Dans cette réalisation particulière, et nullement limitative, de la figure 1, les seconds moyens de guidage en pivotement 16 comportent au moins trois roulements à billes ou similaires, tels que galets ou patins de guidage, agencés pour être fixés sur la platine 10 ou le pont 11, et extérieurs au tambour 3 avec lequel une cage de chacun des roulements coopère par appui au niveau d'une surface périphérique de guidage 17 du tambour 3.In this particular embodiment, and in no way limiting, of the figure 1 the second pivot guide means 16 comprise at least three ball bearings or the like, such as rollers or guide pads, arranged to be fixed on the plate 10 or the bridge 11, and outside the drum 3 with which a cage of each of the bearings cooperates by bearing at a peripheral guiding surface 17 of the drum 3.

Les jeux axiaux fonctionnels résultent des premiers moyens de guidage en pivotement 15 et des seconds moyens de guidage en pivotement 16 périphériques.The functional axial clearances result from the first pivot guide means 15 and the second peripheral pivot guide means 16.

Dans cette réalisation préférée illustrée par les figures, un premier jeu axial J1 non nul existe entre l'extrémité axiale du arbre de tambour 14 et un fond 416 que comporte l'alésage 411 de la bonde 4.In this preferred embodiment illustrated by the figures, a first non-zero axial play J1 exists between the axial end of the drum shaft 14 and a bottom 416 that the bore 411 of the bung 4 comprises.

De façon similaire, un second jeu axial J2 non nul existe entre une extrémité axiale 417 de la bonde 4, et une surface antagoniste 418 que comporte le tambour 3 autour de l'arbre de tambour 14 au niveau d'un fond de tambour 473.Similarly, a second non-zero axial clearance J2 exists between an axial end 417 of the bung 4, and an opposing surface 418 that the drum 3 comprises around the drum shaft 14 at a drum bottom 473.

La bonde 4 est ici chassée sur l'arbre de barillet 14, par la coopération d'un alésage 411 de la bonde 4 avec une portée 141 de l'arbre 14. Les figures illustrent un ajustement gras sur une surface réduite, située au voisinage de l'extrémité 417 de l'arbre 14. Au-delà, la bonde 4 et l'arbre 14 sont séparés par un jeu J3 positif ou nul. Naturellement, l'alésage 411 de la bonde 4 et la portée 141 de l'arbre 14 du tambour 3 peuvent être séparés sur toute leur longueur par un jeu J3 ne garantissant que le passage de l'un dans l'autre.The bung 4 is here driven on the barrel shaft 14, by the cooperation of a bore 411 of the bung 4 with a bearing 141 of the shaft 14. The figures illustrate a fat adjustment on a reduced surface, located in the vicinity end 417 of the shaft 14. Beyond, the plug 4 and the shaft 14 are separated by a clearance J3 positive or zero. Naturally, the bore 411 of the bung 4 and the bearing 141 of the shaft 14 of the drum 3 can be separated over their entire length by a clearance J3 guaranteeing only the passage of one into the other.

Dans une réalisation particulière de l'invention, et en particulier quand la surface de réception 5 est de révolution autour de l'axe D, le ressort 2 est fixé à la bonde 4 par friction.In a particular embodiment of the invention, and in particular when the receiving surface 5 is of revolution about the axis D, the spring 2 is fixed to the bung 4 by friction.

Dans une réalisation particulière et particulièrement avantageuse de l'invention, et en particulier quand la surface de réception 5 est de révolution autour de l'axe D, le ressort 2 est soudé ou brasé à la bonde 4 de façon à former un sous-ensemble ressort-bonde monobloc.In a particular and particularly advantageous embodiment of the invention, and in particular when the receiving surface 5 is of revolution about the axis D, the spring 2 is welded or brazed to the bung 4 so as to form a subset one-piece bung spring.

La figure 4 représente un barillet similaire à celui de la figure 1, avec accrochage du ressort 2 sur un crochet 41 de la bonde 4, il en est de même sur la figure 5, ce crochet 41 est visible sur la figure 2 illustrant la bonde de la figure 1.The figure 4 represents a barrel similar to that of the figure 1 , with attachment of the spring 2 on a hook 41 of the bung 4, it is the same on the figure 5 this hook 41 is visible on the figure 2 illustrating the bung of the figure 1 .

La figure 5 représente une variante où la bonde 4 et le tambour 3 sont indépendants, le tambour 3 est guidé par les seconds moyens de guidage en pivotement 16 périphériques, ici constitués par des roulements, tandis que la bonde est montée en porte-à-faux et guidée par les premiers moyens de guidage en pivotement 15, ici constitués par un roulement à billes.The figure 5 represents a variant where the bung 4 and the drum 3 are independent, the drum 3 is guided by the second peripheral 16 pivoting guide means, here constituted by bearings, while the bung is mounted cantilevered and guided by the first pivot guide means 15, here constituted by a ball bearing.

L'invention concerne encore un mouvement d'horlogerie 100 comportant au moins un tel ensemble barillet 1 pour le stockage d'énergie avec une entrée constituée, ou bien par un rochet 12 monté solidaire en pivotement de la bonde 4, ou bien par une denture de tambour 13 montée solidaire en pivotement du tambour 3, et une sortie constituée respectivement, ou bien par une denture de tambour 13 montée solidaire en pivotement du tambour 3, ou bien par un rochet 12 monté solidaire en pivotement de la bonde 4.The invention also relates to a watchmaking movement 100 comprising at least one such barrel assembly 1 for storing energy with an incorporated input, or else a ratchet 12 pivotally mounted on the plug 4, or by a set of teeth drum 13 mounted pivotally mounted to the drum 3, and an outlet respectively formed, or by a toothing drum 13 mounted pivotally integral with the drum 3, or by a ratchet 12 mounted pivotally integral with the bung 4.

L'invention concerne encore une pièce d'horlogerie 1000 comportant au moins un tel mouvement d'horlogerie 100 ou/et au moins un tel ensemble barillet 1 pour le stockage d'énergie avec une entrée constituée, ou bien par un rochet 12 monté solidaire en pivotement de la bonde 4, ou bien par une denture de tambour 13 montée solidaire en pivotement du tambour 3, et une sortie constituée respectivement, ou bien par une denture de tambour 13 montée solidaire en pivotement du tambour 3, ou bien par un rochet 12 monté solidaire en pivotement de la bonde 4.The invention also relates to a timepiece 1000 comprising at least one watch movement 100 and / or at least one such barrel assembly 1 for energy storage with an incorporated input, or a ratchet 12 mounted solidarity pivoting the bung 4, or by a toothing drum 13 mounted pivotally integral with the drum 3, and an output constituted respectively, or by a toothing drum 13 mounted to pivotally attached to the drum 3, or by a ratchet 12 mounted pivotally integral with the bung 4.

Claims (14)

Ensemble barillet (1) d'horlogerie, agencé pour être monté sur une platine (10) ou/et un pont (11) d'un mouvement (100) ou d'une pièce d'horlogerie (1000), et comportant au moins un ressort moteur (2) de barillet monté en torsion entre, à une première extrémité (21) un tambour (3) de barillet, et à une deuxième extrémité (22) une surface de réception (5) que comporte une bonde (4) de barillet coaxiale audit tambour (3) autour d'un axe de pivotement (D), caractérisé en ce que le rayon maximal de ladite bonde (4) par rapport audit axe de pivotement (D) est inférieur à dix fois l'épaisseur maximale dudit ressort (2), en ce que ladite bonde (4) est guidée en pivotement autour dudit axe de pivotement (D) par des premiers moyens de guidage en pivotement (15) agencés pour coopérer selon le cas avec ladite platine (10) ou ledit pont (11), en ce que ledit tambour (3) est guidé en pivotement autour dudit axe de pivotement (D) par des seconds moyens de guidage en pivotement (16) périphériques agencés pour coopérer selon le cas avec ladite platine (10) ou ledit pont (11).Watch cylinder assembly (1), arranged to be mounted on a plate (10) or / and a bridge (11) of a movement (100) or a timepiece (1000), and comprising at least a torsion-mounted mainspring (2) mounted between a barrel drum (3) at a first end (21) and a receiving surface (5) at a second end (22) having a plug (4) of barrel coaxial with said drum (3) about a pivot axis (D), characterized in that the maximum radius of said bung (4) with respect to said pivot axis (D) is less than ten times the maximum thickness said spring (2), in that said plug (4) is pivotally guided about said pivot axis (D) by first pivoting guide means (15) arranged to cooperate as appropriate with said plate (10) or said bridge (11), in that said drum (3) is pivotally guided about said pivot axis (D) by second pivoting guide means (16) devices arranged to cooperate as appropriate with said plate (10) or said bridge (11). Ensemble barillet (1) selon la revendication 1, caractérisé en ce que ladite surface de réception (5) est une surface de révolution par rapport audit axe de pivotement (D).Barrel assembly (1) according to claim 1, characterized in that said receiving surface (5) is a surface of revolution with respect to said pivot axis (D). Ensemble barillet (1) selon l'une des revendications précédentes, caractérisé en ce que ledit ressort (2) est enfermé dans une chambre (32) délimitée par ledit tambour (3) et un couvercle (7) lequel est monté solidaire de ladite bonde (4).Barrel assembly (1) according to one of the preceding claims, characterized in that said spring (2) is enclosed in a chamber (32) defined by said drum (3) and a cover (7) which is mounted integral with said bung (4). Ensemble barillet (1) selon la revendication 3, caractérisé en ce que ledit couvercle (7) est un rochet (12) agencé pour recevoir ou transmettre l'énergie stockée par ledit ressort (2) dans ledit ensemble barillet (1).Barrel assembly (1) according to claim 3, characterized in that said lid (7) is a ratchet (12) arranged to receive or transmit energy stored by said spring (2) in said barrel assembly (1). Ensemble barillet (1) selon l'une des revendications précédentes, caractérisé en ce que lesdits premiers moyens de guidage en pivotement (15) sont constitués par au moins un roulement à billes dont une cage interne (15A) est guidée sur une première portée (415) cylindrique que comporte ladite bonde (4) selon ledit axe de pivotement (D), et vient en appui direct ou indirect contre une deuxième portée que comporte ladite bonde (4) et qui s'étend perpendiculairement audit axe de pivotement (D).Barrel assembly (1) according to one of the preceding claims, characterized in that said first pivoting guide means (15) consist of at least one ball bearing of which an inner cage (15A) is guided on a first cylindrical surface (415) that comprises said bung (4) along said pivot axis (D), and bears directly or indirectly against a second surface that comprises said bung (4) and extending perpendicularly to said pivot axis (D). Ensemble barillet (1) selon la revendication précédente, caractérisé en ce que ledit roulement à billes comporte une cage externe (15B) agencée pour être fixée sur ladite platine (10) ou ledit pont (11).Barrel assembly (1) according to the preceding claim, characterized in that said ball bearing comprises an outer cage (15B) arranged to be fixed on said plate (10) or said bridge (11). Ensemble barillet (1) selon l'une des revendications précédentes, caractérisé en ce que lesdits seconds moyens de guidage en pivotement (16) comportent au moins trois roulements à billes, agencés pour être fixés sur ladite platine (10) ou ledit pont (11), et extérieurs audit tambour (3) avec lequel une cage de chacun desdits roulements coopère par appui au niveau d'une surface périphérique de guidage (17) dudit tambour (3).Barrel assembly (1) according to one of the preceding claims, characterized in that said second pivoting guide means (16) comprise at least three ball bearings, arranged to be fixed on said plate (10) or said bridge (11). ), and external to said drum (3) with which a cage of each of said bearings cooperates by support at a peripheral guiding surface (17) of said drum (3). Ensemble barillet (1) selon l'une des revendications précédentes, caractérisé en ce que ladite bonde (4) comporte un alésage (411) pivotant sur une portée (141) que comporte un arbre de tambour (14) solidaire dudit tambour (3).Barrel assembly (1) according to one of the preceding claims, characterized in that said bung (4) comprises a bore (411) pivoting on a bearing (141) that comprises a drum shaft (14) integral with said drum (3) . Ensemble barillet (1) selon la revendication précédente, caractérisé en ce que un premier jeu axial (J1) non nul existe entre l'extrémité axiale dudit arbre de tambour (14) et un fond (416) que comporte ledit alésage (411) de ladite bonde (4), ledit alésage (411) étant borgne.Barrel assembly (1) according to the preceding claim, characterized in that a first non-zero axial play (J1) exists between the axial end of said drum shaft (14) and a bottom (416) that comprises said bore (411) of said bung (4), said bore (411) being blind. Ensemble barillet (1) selon l'une des revendications 8 ou 9, caractérisé en ce que un second jeu axial (J2) non nul existe entre une extrémité axiale (417) de ladite bonde (4), et une surface antagoniste (418) que comporte ledit tambour (3) autour dudit arbre de tambour (14) au niveau d'un fond de tambour (473).Barrel assembly (1) according to one of claims 8 or 9, characterized in that a second non-zero axial clearance (J2) exists between an axial end (417) of said bung (4) and an opposing surface (418) said drum (3) comprises around said drum shaft (14) at a drum bottom (473). Ensemble barillet (1) selon l'une des revendications précédentes, caractérisé en ce que ledit ressort (2) est fixé à ladite bonde (4) par friction.Barrel assembly (1) according to one of the preceding claims, characterized in that said spring (2) is fixed to said bung (4) by friction. Ensemble barillet (1) selon l'une des revendications 1 à 10, caractérisé en ce que ledit ressort (2) est soudé ou brasé à ladite bonde (4) de façon à former un sous-ensemble ressort-bonde monobloc.Barrel assembly (1) according to one of claims 1 to 10, characterized in that said spring (2) is welded or brazed to said bung (4) so as to form a monoblock spring-binder subassembly. Mouvement d'horlogerie (100) comportant au moins un ensemble barillet (1) selon l'une des revendications précédentes pour le stockage d'énergie avec une entrée constituée, ou bien par un rochet (12) monté solidaire en pivotement de ladite bonde (4), ou bien par une denture de tambour (13) montée solidaire en pivotement dudit tambour (3), et une sortie constituée respectivement, ou bien par une denture de tambour (13) montée solidaire en pivotement dudit tambour (3), ou bien par un rochet (12) monté solidaire en pivotement de ladite bonde (4).Watchmaking movement (100) comprising at least one barrel assembly (1) according to one of the preceding claims for storing energy with an incorporated input, or else by a ratchet (12) mounted pivotally integral with said bung ( 4), or by a toothing drum (13) mounted pivotally integral with said drum (3), and an outlet constituted respectively, or by a toothing drum (13) mounted pivotally integral with said drum (3), or by a ratchet (12) pivotally mounted on said bung (4). Pièce d'horlogerie (1000) comportant au moins un mouvement d'horlogerie (100) selon la revendication 13 ou/et au moins un ensemble barillet (1) selon l'une des revendications 1 à 12 pour le stockage d'énergie avec une entrée constituée, ou bien par un rochet (12) monté solidaire en pivotement de ladite bonde (4), ou bien par une denture de tambour (13) montée solidaire en pivotement dudit tambour (3), et une sortie constituée respectivement, ou bien par une denture de tambour (13) montée solidaire en pivotement dudit tambour (3), ou bien par un rochet (12) monté solidaire en pivotement de ladite bonde (4).Timepiece (1000) comprising at least one watch movement (100) according to Claim 13 or / and at least one barrel assembly (1) according to one of Claims 1 to 12 for storing energy with a an inlet constituted by either a ratchet (12) pivotably mounted to said bung (4), or by a toothing of drum (13) pivotably mounted to said drum (3), and an outlet constituted respectively, or by a toothing drum (13) mounted pivotally integral with said drum (3), or by a ratchet (12) mounted pivotally integral with said bung (4).
EP20110181355 2011-09-15 2011-09-15 Clock barrel assembly with reduced core diameter Active EP2570865B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US182629A (en) * 1876-09-26 Improvement in watch-barrels
FR1473744A (en) * 1966-04-04 1967-03-17 Ghielmetti S A Spring case for self-winding watches
FR2341886A1 (en) * 1976-02-18 1977-09-16 Bouchet Lassale Sa MANUAL OR AUTOMATIC WATCH MOVEMENT
FR2341885A1 (en) * 1976-02-18 1977-09-16 Bouchet Lassale Sa WATCH BARREL SWIVEL DEVICE
WO2008046750A2 (en) * 2006-10-20 2008-04-24 Eterna Sa Fabrique D'horlogerie Timepiece

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US182629A (en) * 1876-09-26 Improvement in watch-barrels
FR1473744A (en) * 1966-04-04 1967-03-17 Ghielmetti S A Spring case for self-winding watches
FR2341886A1 (en) * 1976-02-18 1977-09-16 Bouchet Lassale Sa MANUAL OR AUTOMATIC WATCH MOVEMENT
FR2341885A1 (en) * 1976-02-18 1977-09-16 Bouchet Lassale Sa WATCH BARREL SWIVEL DEVICE
WO2008046750A2 (en) * 2006-10-20 2008-04-24 Eterna Sa Fabrique D'horlogerie Timepiece

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