EP2936253B1 - Clock barrel - Google Patents

Clock barrel Download PDF

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Publication number
EP2936253B1
EP2936253B1 EP13779838.5A EP13779838A EP2936253B1 EP 2936253 B1 EP2936253 B1 EP 2936253B1 EP 13779838 A EP13779838 A EP 13779838A EP 2936253 B1 EP2936253 B1 EP 2936253B1
Authority
EP
European Patent Office
Prior art keywords
ratchet
arbor
bridge
drum
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13779838.5A
Other languages
German (de)
French (fr)
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EP2936253A1 (en
Inventor
Laurent Kaelin
Arthur Queval
Martin Vautherot
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.)
ETA Manufacture Horlogere Suisse SA
Original Assignee
ETA Manufacture Horlogere Suisse SA
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Priority to EP13779838.5A priority Critical patent/EP2936253B1/en
Publication of EP2936253A1 publication Critical patent/EP2936253A1/en
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Publication of EP2936253B1 publication Critical patent/EP2936253B1/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
    • G04B1/14—Mainsprings; Bridles therefor
    • G04B1/145—Composition and manufacture of the springs
    • 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
    • G04B1/14—Mainsprings; Bridles therefor

Definitions

  • the invention relates to a shaft-ratchet assembly comprising a cocking ratchet of a watch cylinder, said ratchet comprising an axial passage for threading it onto a shaft comprising means for driving pivoting salient or reentrant.
  • the invention also relates to a watch cylinder for pivotally mounting between a plate and a bridge and comprising at least one spring housed between a pivoting drum and a cover and hung between at its outer end said drum and at its inner end a shaft which is integral in pivoting with such a ratchet about a pivot axis.
  • the invention also relates to a watch movement, comprising at least one plate and a bridge and such a cylinder.
  • the invention also relates to a watch comprising such a movement.
  • the invention relates to the field of watch mechanisms, and more particularly the energy storage mechanisms, the engine barrel type, barrel striking, or the like.
  • a solution consists of in a decrease in the diameter of the barrel shaft and the associated core, 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.
  • the dimensioning should not be done lightly, indeed a risk of breakage exists if the bung diameter is too small.
  • 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.
  • the document FR 2 329 000 A1 in the name of ETA describes a barrel with a shaft with non-cylindrical barrel, the snap hook of the spring being contained in a recess delimited by a geometric cylinder defined by the upper and lower surfaces of this barrel.
  • the document XP 001 219 052 A in the name of SOCIETE ODO describes a barrel with a non-cylindrical shaft, carrying a tube which itself carries the snap hook of the spring. This shaft has shoulders and grooves circlips.
  • the document CH 15 286 A in the name of DANASINO describes a barrel with a sectional spring gradually increasing from the outside towards the inside of the drum.
  • the document FR 1 443 494 A in the name of GLASHUETTER UHRENBETRIEB describes a barrel with a cover plate which limits the axial displacement of the barrel shaft.
  • the document FR 2 210 784 A1 in the name of ETA discloses a barrel with a one-piece shaft having a longitudinal groove of attachment of the spring.
  • the document DE148352C discloses a ratchet-shaft assembly with a spring for holding the ratchet on the shaft.
  • the invention proposes to improve the design of barrels designed for a large power reserve, giving them good rigidity, particularly at the ratchet, while retaining a reduced number of components, and an acceptable machining cost, or, preferably, more economical than on known barrels.
  • the invention thus relates to a shaft-ratchet assembly according to claim 1.
  • the invention also relates to a watch cylinder for pivotally mounting between a plate and a bridge and comprising at least one spring housed between a pivoting drum and a cover and hung between its outer end said drum and at its inner end a shaft which is integral in pivoting with such a ratchet about a pivot axis, characterized in that said shaft comprises, around a cylindrical barrel along said axis of pivoting, firstly a projecting hook for hooking said spring, and secondly pivoting drive means, projecting or reentrant, which cooperate with complementary drive means that includes said ratchet for its pivoting drive.
  • said pivoting drive means constitute an axial abutment of said ratchet along said pivot axis
  • said shaft is pivoted at an upper bearing surface in a bore of said bridge or a stone which comprises said bridge
  • said ratchet comprises an upper support net whose travel is limited by a lower surface of said bridge 5 or said stone, said ratchet being between said bridge and an upper surface that comprises said drum facing a lower surface said ratchet, and said drum pivots at a bore it comprises on said cylindrical barrel.
  • said spring comprises, in the axial direction of said pivot axis, a projecting upper portion arranged to bear on an inner surface of said drum, and a lower projecting portion arranged to come into support on an upper part of said cover.
  • the fretting of said drum is limited in lower bearing relative to said ratchet by an upper surface of said drum which is limited by a lower surface of said ratchet, the fretting of said ratchet being limited in lower bearing relative to at said bridge, by a thread of said ratchet which is bounded by a lower surface of said bridge or of a stone which said bridge comprises, and the step of said lid is limited in upper support relative to said plate, by a lower surface of said lid; which is limited by an upper surface of said platen or a stone that includes said platen.
  • said spring is made of a cobalt-nickel-chromium-based multiphase alloy comprising from 44 to 46% of cobalt, from 20 to 22% of nickel and from 17 to 19% of chromium. , from 4 to 6% of iron, from 3 to 5% of tungsten, from 3 to 5% of molybdenum, from 0 to 2% of titanium, from 0 to 1% of beryllium, and from Young's modulus of between 200 and 240 GPa and a shear modulus of between 80 and 100 GPa, in said spring has a width / thickness ratio of between 3 and 23, and the ratio of the maximum radius of a bearing surface of the spring of said shaft and the the thickness of said spring is between 3 and 9.
  • the invention also relates to a watch movement, comprising at least one plate and a bridge and such a cylinder.
  • said bridge comprises an upper abutment plate whose lower surface is arranged to limit the axial displacement of said shaft, and said platen comprises a lower abutment plate whose upper surface is arranged to limit the axial movement of said shaft.
  • the invention also relates to a watch comprising such a movement.
  • the invention relates to the field of watch mechanisms, and more particularly the energy storage mechanisms, the engine barrel type, barrel striking, or the like.
  • the invention relates to a ratchet 2 for cocking a watch cylinder 1.
  • This ratchet 2 comprises an axial passage 20 for threading it onto a shaft 3 comprising pivoting driving means 42 projecting or reentrant.
  • this ratchet 2 comprises, at this axial passage 20, at least one leaf spring 230 allowing the introduction of the ratchet 2 on the shaft 3.
  • This leaf spring 230 is arranged to exert an effort of support on the pivot drive means 42 of the shaft 3.
  • This at least one leaf spring 230 forms complementary drive means 23, which are complementary to these pivot drive means 42 for the drive in pivoting of the shaft 3.
  • the ratchet 2 comprises, for each such spring leaf 230, a slot 231 opening into the axial passage 20. It will be noted that such a leaf spring 230 may be mounted projecting from the upper surfaces 21 and / or bottom of the ratchet 2.
  • this ratchet 2 comprises at least one upper support thread 24, for the limitation of stroke of the ratchet 2 relative to a plate or a bridge or a stone.
  • the ratchet 2 comprises, in the immediate vicinity of the axial passage 20, at least one lower support thread 25 for limiting the stroke of the ratchet 2 relative to a drum or a barrel plug.
  • the invention also relates to a watch cylinder 1 for pivotally mounting between a plate 9 and a bridge 5, and comprising at least one spring 7.
  • This spring 7 is housed between a pivoting drum 6 and a cover 8, and hung between, at its outer end the drum 6 and at its inner end a shaft 3.
  • the shaft 3 is pivotally integral with such a ratchet 2 about a pivot axis D.
  • the shaft 3 comprises, around a cylindrical shaft 31 along the axis of pivoting D, on the one hand a hook 32 projecting for the attachment of the spring 7, and on the other hand means pivoting drive 42, projecting or reentrants, which cooperate with complementary drive means 23 that includes the ratchet 2 for its pivoting drive.
  • the drive means 42 may conventionally consist of a square or plates, the figure 4 illustrates for example a simplified variant, not limiting, with a single flat shaft 3 42.
  • the complementary means 23 of the ratchet 2 can then advantageously consist of at least one leaf spring allowing the introduction of the ratchet 2 on the shaft 3, and also ensuring the pivoting drive.
  • pivoting drive means 42 constitute an axial stop of the ratchet 2 along the axis of pivoting D.
  • the shaft 3 is pivoted at an upper bearing surface 13 in a bore 51 of the bridge 5 or a stone 52 5 and the ratchet 2 preferably comprises, so as to reduce the friction torque and the loss of efficiency, at least one upper support thread 24 whose stroke is limited by a lower surface 53 of the bridge 5 or stone 52 (as shown in the figures).
  • the ratchet 2 is between the bridge 5 and an upper surface 61 that includes the drum 6 facing a lower surface 22 of the ratchet 2. And the drum 6 pivots at a bore 62 that it has on the cylindrical shaft 31 .
  • the spring 7 comprises, in the axial direction of the pivot axis D, a projecting upper portion 71 arranged to bear on an inner surface 65 of the drum 6, and a projecting lower portion 72 arranged to bear on a upper part 85 of the cover 8. The return of frolicking of the shaft 3 is thus ensured by the spring 7.
  • the drum 6 carries a cover 8, preferably but not necessarily pivotally attached to the drum 6, and a bore 81 cooperates with a bearing 31 of the shaft 3.
  • a lower surface 82 of the cover 8 is limited in clearance by a surface upper 93 of the plate 9 or a stone 92 housed in the plate 9, a bore 91 of the plate 9 or the stone 92 serving as a pivot to the bearing 31 of the shaft 3.
  • the frolicking of the drum 6 is limited to lower bearing relative to the ratchet 2 by an upper surface 61 of the drum 6 which is limited by a lower surface 22 of the ratchet 2.
  • the fretting of the ratchet 2 is limited in lower bearing relative to the bridge 5, by a thread 24 of the ratchet 2 which is limited by a lower surface 53 of the bridge 5 or a stone 52 that includes the bridge 5.
  • the frog of the cover 8 is limited in upper support relative to the plate 9, by a lower surface 82 of the cover 8 which is bounded by an upper surface 93 of the plate 9 or a stone 91 that comprises the plate 9.
  • the motor spring can be made of different materials: carbon steel, stainless steel, "Nivaflex®", silicon, DLC, quartz, glass, or similar.
  • the spring 7 is made of a cobalt-nickel-chromium-based multiphase alloy comprising from 44 to 46% of cobalt, from 20 to 22% of nickel, from 17 to 19% of chromium, from 4 to 6% of iron, 3 to 5% of tungsten, 3 to 5% of molybdenum, 0 to 2% of titanium, 0 to 1% of beryllium, and Young's modulus of between 200 and 240 GPa and a shear modulus between 80 and 100 GPa.
  • This spring 7 preferably has a width / thickness ratio of between 3 and 23, and more particularly between 9 and 21.
  • the maximum radius of the bearing 31 of the shaft 3 (without taking into account the possible extra thickness specific to a hook 32), made of steel or stainless steel, for example hardened stainless steel 4C27A (also named according to different standards 1.4197, ASTM 420F, or DIN X22 CrMoNiS 131), with respect to the pivot axis D is less than nine times the maximum thickness of the spring 7.
  • the embodiments illustrated make it possible to obtain a ratio between the maximum radius of the bearing 31 of the shaft 3 and the thickness of the spring 7 between 3 and 9, and preferably between 4 and 6, preferably close to five.
  • the invention also relates to a watch movement 100, comprising at least one plate 9 and a bridge 5 and such a cylinder 1.
  • the bridge 5 may comprise at least one thread intended to cooperate in support, with the least possible contact surface , with the upper surface 21 of the ratchet 2, in addition to or in place of the thread 24 of the ratchet 2.
  • the bridge 5 comprises an upper stop plate 56, fixed with screws or rivets 58, or glued or welded, or the like, a lower surface 57 is arranged to limit the axial displacement of the shaft 3, and the plate 9 comprises a lower abutment plate 96, fixed with screws or rivets 98, or bonded or welded, or the like, an upper surface 97 of which is arranged to limit the axial displacement of the shaft 3.
  • the invention also relates to a watch 200 comprising such a movement 100.
  • the first variant of the figure 1 is advantageous the shaft 3 is of substantially constant diameter, the hook 32 is easy to machine, the drive means 42 also.
  • the bung diameter is limited only by the bulk of these pivoting drive means 42.
  • the second variant of the figure 2 ensures the recovery of frolicking of the shaft 3 with the spring 7, the shaft 3 adopts the same advantageous configuration at low production cost as in the first variant.
  • the bung diameter is limited by the dimensions of the drive means 42, typically a square or the like.

Description

Domaine de l'inventionField of the invention

L'invention concerne un ensemble arbre-rochet comportant rochet d'armement d'un barillet d'horlogerie, ledit rochet comportant un passage axial pour son enfilage sur un arbre comportant des moyens d'entraînement en pivotement saillants ou rentrants.The invention relates to a shaft-ratchet assembly comprising a cocking ratchet of a watch cylinder, said ratchet comprising an axial passage for threading it onto a shaft comprising means for driving pivoting salient or reentrant.

L'invention concerne encore un barillet d'horlogerie pour montage pivotant entre une platine et un pont et comportant au moins un ressort logé entre un tambour pivotant et un couvercle et accroché entre, à son extrémité extérieure ledit tambour et à son extrémité intérieure un arbre lequel est solidaire en pivotement avec un tel rochet autour d'un axe de pivotement.The invention also relates to a watch cylinder for pivotally mounting between a plate and a bridge and comprising at least one spring housed between a pivoting drum and a cover and hung between at its outer end said drum and at its inner end a shaft which is integral in pivoting with such a ratchet about a pivot axis.

L'invention concerne encore un mouvement d'horlogerie, comportant au moins une platine et un pont et un tel barillet.The invention also relates to a watch movement, comprising at least one plate and a bridge and such a cylinder.

L'invention concerne encore une montre comportant un tel mouvement.The invention also relates to a watch comprising such a movement.

L'invention concerne le domaine des mécanismes d'horlogerie, et plus particulièrement les mécanismes de stockage d'énergie, du type barillet moteur, barillet de sonnerie, ou similaire.The invention relates to the field of watch mechanisms, and more particularly the energy storage mechanisms, the engine barrel type, barrel striking, or the like.

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, fixé à son extrémité intérieure sur une bonde constituée, ou bien par un arbre, généralement cylindrique, ou bien par un noyau plus massif, une solution consiste en une diminution du diamètre de l'arbre de barillet et du noyau associé, 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, fixed at its inner end to a bung, or by a generally cylindrical shaft, or by a more massive core, a solution consists of in a decrease in the diameter of the barrel shaft and the associated core, 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 si le diamètre de bonde est trop faible.The dimensioning should not be done lightly, indeed a risk of breakage exists if the bung diameter 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.

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.In particular, it is not enough to reduce all the sizing, because the sections of material are then insufficient to ensure fatigue resistance.

Il s'agit donc de concilier un diamètre d'arbre le plus réduit possible, pour autoriser la plus grande réserve de marche possible, et une rigidité de l'entraînement au niveau du rochet.It is therefore a question of reconciling a tree diameter as small as possible, to allow the greatest possible power reserve, and a rigidity of the drive at the level of the ratchet.

Donc, il faut concevoir un barillet avec un rochet et un arbre tels que le plus petit diamètre possible d'arbre puisse passer le couple transmis par le rochet.So, it is necessary to design a barrel with a ratchet and a tree such that the smallest possible diameter of tree can pass the torque transmitted by the ratchet.

Le document FR 2 329 000 A1 au nom de ETA décrit un barillet avec un arbre à fût non cylindrique, le crochet d'accrochage du ressort étant contenu dans un évidement délimité par un cylindre géométrique défini par les portées supérieure et inférieure de ce fût.The document FR 2 329 000 A1 in the name of ETA describes a barrel with a shaft with non-cylindrical barrel, the snap hook of the spring being contained in a recess delimited by a geometric cylinder defined by the upper and lower surfaces of this barrel.

Le document XP 001 219 052 A au nom de SOCIETE ODO décrit un barillet avec un arbre non cylindrique, porteur d'un tube qui porte lui-même le crochet d'accrochage du ressort. Cet arbre comporte des épaulements et des gorges de circlips.The document XP 001 219 052 A in the name of SOCIETE ODO describes a barrel with a non-cylindrical shaft, carrying a tube which itself carries the snap hook of the spring. This shaft has shoulders and grooves circlips.

Le document US 730 103 A au nom de ERICKSON décrit un barillet avec un arbre non cylindrique comportant une portion à facettes, dite rectangulaire, qui porte une bonde porteuse du crochet d'accrochage du ressort.The document US 730 103 A in the name of ERICKSON describes a barrel with a non-cylindrical shaft having a faceted portion, called rectangular, which carries a bung carrying the hook of the spring.

Le document FR 2 135 134 A1 au nom de BAUMGARTNER, décrit un barillet avec une douille fendue supportant une bonde de barillet.The document FR 2 135 134 A1 in the name of BAUMGARTNER, describes a cylinder with a split socket supporting a barrel plug.

Le document CH 15 286 A au nom de DANASINO décrit un barillet avec un ressort de section augmentant graduellement de l'extérieur vers l'intérieur du tambour.The document CH 15 286 A in the name of DANASINO describes a barrel with a sectional spring gradually increasing from the outside towards the inside of the drum.

Le document FR 1 443 494 A au nom de GLASHUETTER UHRENBETRIEB décrit un barillet avec une plaque de recouvrement qui limite le déplacement axiale de l'arbre de barillet
Le document FR 2 210 784 A1 au nom d'ETA décrit un barillet avec un arbre monobloc comportant une rainure longitudinale d'accrochage du ressort.The document FR 1 443 494 A in the name of GLASHUETTER UHRENBETRIEB describes a barrel with a cover plate which limits the axial displacement of the barrel shaft
The document FR 2 210 784 A1 in the name of ETA discloses a barrel with a one-piece shaft having a longitudinal groove of attachment of the spring.

Le document DE148352C divulgue un ensemble rochet-arbre avec un ressort permettant de maintenir le rochet sur l'arbre.The document DE148352C discloses a ratchet-shaft assembly with a spring for holding the ratchet on the shaft.

Résumé de l'inventionSummary of the invention

L'invention se propose d'améliorer la conception de barillets conçus pour une grande réserve de marche, en leur procurant une bonne rigidité, notamment au niveau du rochet, tout en conservant un nombre de composants réduit, et un coût d'usinage acceptable, ou, de préférence, plus économique que sur les barillets connus.The invention proposes to improve the design of barrels designed for a large power reserve, giving them good rigidity, particularly at the ratchet, while retaining a reduced number of components, and an acceptable machining cost, or, preferably, more economical than on known barrels.

L'invention concerne ainsi un ensemble arbre-rochet selon la revendication 1. L'invention concerne encore un barillet d'horlogerie pour montage pivotant entre une platine et un pont et comportant au moins un ressort logé entre un tambour pivotant et un couvercle et accroché entre, à son extrémité extérieure ledit tambour et à son extrémité intérieure un arbre lequel est solidaire en pivotement avec un tel rochet autour d'un axe de pivotement, caractérisé en ce que ledit arbre comporte, autour d'un fût cylindrique selon ledit axe de pivotement, d'une part un crochet saillant pour l'accrochage dudit ressort, et d'autre part des moyens d'entraînement en pivotement, saillants ou rentrants, qui coopèrent avec des moyens d'entraînement complémentaire que comporte ledit rochet pour son entraînement en pivotement.The invention thus relates to a shaft-ratchet assembly according to claim 1. The invention also relates to a watch cylinder for pivotally mounting between a plate and a bridge and comprising at least one spring housed between a pivoting drum and a cover and hung between its outer end said drum and at its inner end a shaft which is integral in pivoting with such a ratchet about a pivot axis, characterized in that said shaft comprises, around a cylindrical barrel along said axis of pivoting, firstly a projecting hook for hooking said spring, and secondly pivoting drive means, projecting or reentrant, which cooperate with complementary drive means that includes said ratchet for its pivoting drive.

Selon une caractéristique de l'invention, lesdits moyens d'entraînement en pivotement constituent une butée axiale dudit rochet selon ledit axe de pivotement, ledit arbre est pivoté au niveau d'une portée supérieure dans un alésage dudit pont ou d'une pierre que comporte ledit pont, et ledit rochet comporte un filet supérieur d'appui dont la course est limitée par une surface inférieure dudit pont 5 ou de ladite pierre, ledit rochet étant compris entre ledit pont et une surface supérieure que comporte ledit tambour face à une surface inférieure dudit rochet, et ledit tambour pivote au niveau d'un alésage qu'il comporte sur ledit fût cylindrique.According to one characteristic of the invention, said pivoting drive means constitute an axial abutment of said ratchet along said pivot axis, said shaft is pivoted at an upper bearing surface in a bore of said bridge or a stone which comprises said bridge, and said ratchet comprises an upper support net whose travel is limited by a lower surface of said bridge 5 or said stone, said ratchet being between said bridge and an upper surface that comprises said drum facing a lower surface said ratchet, and said drum pivots at a bore it comprises on said cylindrical barrel.

Selon une caractéristique de l'invention dans une variante particulière, ledit ressort comporte, selon la direction axiale dudit axe de pivotement, une partie supérieure saillante agencée pour venir en appui sur une surface intérieure dudit tambour, et une partie inférieure saillant agencée pour venir en appui sur une partie supérieure dudit couvercle.According to a feature of the invention in a particular variant, said spring comprises, in the axial direction of said pivot axis, a projecting upper portion arranged to bear on an inner surface of said drum, and a lower projecting portion arranged to come into support on an upper part of said cover.

Selon une caractéristique de l'invention, l'ébat dudit tambour est limité en appui inférieur par rapport audit rochet par une surface supérieure dudit tambour qui est limitée par une surface inférieure dudit rochet, l'ébat dudit rochet est limité en appui inférieur par rapport audit pont, par un filet dudit rochet qui est limité par une surface inférieure dudit pont ou d'une pierre que comporte ledit pont, et l'ébat dudit couvercle est limité en appui supérieur par rapport à ladite platine, par une surface inférieure dudit couvercle qui est limitée par une surface supérieure de ladite platine ou d'une pierre que comporte ladite platine.According to a characteristic of the invention, the fretting of said drum is limited in lower bearing relative to said ratchet by an upper surface of said drum which is limited by a lower surface of said ratchet, the fretting of said ratchet being limited in lower bearing relative to at said bridge, by a thread of said ratchet which is bounded by a lower surface of said bridge or of a stone which said bridge comprises, and the step of said lid is limited in upper support relative to said plate, by a lower surface of said lid; which is limited by an upper surface of said platen or a stone that includes said platen.

Selon une autre caractéristique encore de l'invention, ledit ressort est réalisé dans un alliage multiphasé à base cobalt-nickel-chrome, comportant de 44 à 46% de cobalt, de 20 à 22% de nickel, de 17 à 19% de chrome, de 4 à 6% de fer, de 3 à 5% de tungstène, de 3 à 5% de molybdène, de 0 à 2% de titane, de 0 à 1% de béryllium, et de module d'Young compris entre 200 et 240 GPa et un module de cisaillement compris entre 80 et 100 GPa, en ledit ressort a un rapport largeur/épaisseur compris entre 3 et 23, et le rapport entre le rayon maximal d'une portée d'appui du ressort dudit arbre et l'épaisseur dudit ressort est compris entre 3 et 9.According to another characteristic of the invention, said spring is made of a cobalt-nickel-chromium-based multiphase alloy comprising from 44 to 46% of cobalt, from 20 to 22% of nickel and from 17 to 19% of chromium. , from 4 to 6% of iron, from 3 to 5% of tungsten, from 3 to 5% of molybdenum, from 0 to 2% of titanium, from 0 to 1% of beryllium, and from Young's modulus of between 200 and 240 GPa and a shear modulus of between 80 and 100 GPa, in said spring has a width / thickness ratio of between 3 and 23, and the ratio of the maximum radius of a bearing surface of the spring of said shaft and the the thickness of said spring is between 3 and 9.

L'invention concerne encore un mouvement d'horlogerie, comportant au moins une platine et un pont et un tel barillet.The invention also relates to a watch movement, comprising at least one plate and a bridge and such a cylinder.

Selon une caractéristique de l'invention dans une variante particulière, ledit pont comporte une plaque de butée supérieure dont une surface inférieure est agencée pour limiter le débattement axial dudit arbre, et ladite platine comporte une plaque de butée inférieure dont une surface supérieure est agencée pour limiter le débattement axial dudit arbre.According to a characteristic of the invention in a particular variant, said bridge comprises an upper abutment plate whose lower surface is arranged to limit the axial displacement of said shaft, and said platen comprises a lower abutment plate whose upper surface is arranged to limit the axial movement of said shaft.

L'invention concerne encore une montre comportant un tel mouvement.The invention also relates to a watch comprising such a movement.

Description sommaire des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention apparaîtront 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 par son axe de pivotement, un barillet selon une première variante de l'invention ;
  • la figure 2 représente, de façon schématisée et en coupe par son axe de pivotement, un barillet selon une deuxième variante de l'invention ;
  • la figure 3 représente, de façon schématisée en blocs, une pièce d'horlogerie comportant un mouvement comportant lui-même un barillet selon l'invention ;
  • la figure 4 représente, de façon schématisée et en vue de dessus, un rochet selon l'invention, équipé d'une lame de ressort, qui est représentée dans une position de coopération avec un plat d'entraînement que comporte un arbre (représenté coupé au niveau d'un plan médian du rochet) ;
  • la figure 5 représente, de façon schématisée et en section selon un plan AA passant par son axe de pivotement, le rochet de la figure 4.
Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which:
  • the figure 1 represents, schematically and in section through its pivot axis, a barrel according to a first variant of the invention;
  • the figure 2 represents, schematically and in section through its pivot axis, a cylinder according to a second variant of the invention;
  • the figure 3 represents, schematically in blocks, a timepiece comprising a movement comprising itself a cylinder according to the invention;
  • the figure 4 represents schematically and in plan view, a ratchet according to the invention, equipped with a leaf spring, which is shown in a position of cooperation with a drive plate that comprises a shaft (shown cut at the level of a median plane of the ratchet);
  • the figure 5 represents, schematically and in section along a plane AA passing through its pivot axis, the ratchet of the figure 4 .

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

L'invention concerne le domaine des mécanismes d'horlogerie, et plus particulièrement les mécanismes de stockage d'énergie, du type barillet moteur, barillet de sonnerie, ou similaire.The invention relates to the field of watch mechanisms, and more particularly the energy storage mechanisms, the engine barrel type, barrel striking, or the like.

L'invention concerne un rochet 2 d'armement d'un barillet d'horlogerie 1. Ce rochet 2 comporte un passage axial 20 pour son enfilage sur un arbre 3 comportant des moyens d'entraînement en pivotement 42 saillants ou rentrants.The invention relates to a ratchet 2 for cocking a watch cylinder 1. This ratchet 2 comprises an axial passage 20 for threading it onto a shaft 3 comprising pivoting driving means 42 projecting or reentrant.

Selon l'invention, ce rochet 2 comporte, au niveau de ce passage axial 20, au moins une lame de ressort 230 autorisant l'introduction du rochet 2 sur l'arbre 3. Cette lame de ressort 230 est agencée pour exercer un effort d'appui sur les moyens d'entraînement en pivotement 42 de l'arbre 3. Cette au moins une lame de ressort 230 forme des moyens d'entraînement complémentaire 23, qui sont complémentaires de ces moyens d'entraînement en pivotement 42 pour l'entraînement en pivotement de l'arbre 3.According to the invention, this ratchet 2 comprises, at this axial passage 20, at least one leaf spring 230 allowing the introduction of the ratchet 2 on the shaft 3. This leaf spring 230 is arranged to exert an effort of support on the pivot drive means 42 of the shaft 3. This at least one leaf spring 230 forms complementary drive means 23, which are complementary to these pivot drive means 42 for the drive in pivoting of the shaft 3.

Dans une variante illustré par les figures 4 et 5, le rochet 2 comporte, pour chaque telle lame de ressort 230, une fente 231 débouchant dans le passage axial 20. On notera qu'une telle lame de ressort 230 peut être montée débordantes des surfaces supérieure 21 ou/et inférieure du rochet 2.In a variant illustrated by the Figures 4 and 5 , the ratchet 2 comprises, for each such spring leaf 230, a slot 231 opening into the axial passage 20. It will be noted that such a leaf spring 230 may be mounted projecting from the upper surfaces 21 and / or bottom of the ratchet 2.

De façon avantageuse, ce rochet 2 comporte au moins un filet supérieur d'appui 24, pour la limitation de course de ce rochet 2 par rapport à une platine ou à un pont ou à une pierre.Advantageously, this ratchet 2 comprises at least one upper support thread 24, for the limitation of stroke of the ratchet 2 relative to a plate or a bridge or a stone.

De façon avantageuse, le rochet 2 comporte, au voisinage immédiat du passage axial 20, au moins un filet inférieur d'appui 25 pour la limitation de course du rochet 2 par rapport à un tambour ou à une bonde de barillet.Advantageously, the ratchet 2 comprises, in the immediate vicinity of the axial passage 20, at least one lower support thread 25 for limiting the stroke of the ratchet 2 relative to a drum or a barrel plug.

L'invention concerne encore un barillet d'horlogerie 1 pour montage pivotant entre une platine 9 et un pont 5, et comportant au moins un ressort 7. Ce ressort 7 est logé entre un tambour 6 pivotant et un couvercle 8, et accroché entre, à son extrémité extérieure le tambour 6 et à son extrémité intérieure un arbre 3. L'arbre 3 est solidaire en pivotement avec un tel rochet 2 autour d'un axe de pivotement D.The invention also relates to a watch cylinder 1 for pivotally mounting between a plate 9 and a bridge 5, and comprising at least one spring 7. This spring 7 is housed between a pivoting drum 6 and a cover 8, and hung between, at its outer end the drum 6 and at its inner end a shaft 3. The shaft 3 is pivotally integral with such a ratchet 2 about a pivot axis D.

Selon l'invention, l'arbre 3 comporte, autour d'un fût cylindrique 31 selon l'axe de pivotement D, d'une part un crochet 32 saillant pour l'accrochage du ressort 7, et d'autre part des moyens d'entraînement en pivotement 42, saillants ou rentrants, qui coopèrent avec des moyens d'entraînement complémentaire 23 que comporte le rochet 2 pour son entraînement en pivotement. Les moyens d'entraînement 42 peuvent consister classiquement en un carré ou des plats, la figure 4 illustre par exemple une variante simplifiée, non limitative, avec un arbre 3 à plat unique 42. Dans une version économe en matière, ils sont rentrants, par exemple constitués par deux plats dans une gorge de l'arbre 3, les moyens complémentaires 23 du rochet 2 peuvent alors avantageusement consister en au moins une lame de ressort autorisant l'introduction du rochet 2 sur l'arbre 3, et assurant également l'entraînement en pivotement.According to the invention, the shaft 3 comprises, around a cylindrical shaft 31 along the axis of pivoting D, on the one hand a hook 32 projecting for the attachment of the spring 7, and on the other hand means pivoting drive 42, projecting or reentrants, which cooperate with complementary drive means 23 that includes the ratchet 2 for its pivoting drive. The drive means 42 may conventionally consist of a square or plates, the figure 4 illustrates for example a simplified variant, not limiting, with a single flat shaft 3 42. In an economical version material, they are re-entrant, for example consist of two dishes in a groove of the shaft 3, the complementary means 23 of the ratchet 2 can then advantageously consist of at least one leaf spring allowing the introduction of the ratchet 2 on the shaft 3, and also ensuring the pivoting drive.

Ces moyens d'entraînement en pivotement 42 constituent une butée axiale du rochet 2 selon l'axe de pivotement D. L'arbre 3 est pivoté au niveau d'une portée supérieure 13 dans un alésage 51 du pont 5 ou d'une pierre 52 que comporte ce pont 5. Et le rochet 2 comporte de préférence, de façon à réduire le couple de frottement et la perte de rendement, au moins un filet supérieur d'appui 24 dont la course est limitée par une surface inférieure 53 du pont 5 ou de la pierre 52 (comme représenté sur les figures). Le rochet 2 est compris entre le pont 5 et une surface supérieure 61 que comporte le tambour 6 face à une surface inférieure 22 du rochet 2. Et le tambour 6 pivote au niveau d'un alésage 62 qu'il comporte sur le fût cylindrique 31.These pivoting drive means 42 constitute an axial stop of the ratchet 2 along the axis of pivoting D. The shaft 3 is pivoted at an upper bearing surface 13 in a bore 51 of the bridge 5 or a stone 52 5 and the ratchet 2 preferably comprises, so as to reduce the friction torque and the loss of efficiency, at least one upper support thread 24 whose stroke is limited by a lower surface 53 of the bridge 5 or stone 52 (as shown in the figures). The ratchet 2 is between the bridge 5 and an upper surface 61 that includes the drum 6 facing a lower surface 22 of the ratchet 2. And the drum 6 pivots at a bore 62 that it has on the cylindrical shaft 31 .

Dans la deuxième variante de la figure 2, le ressort 7 comporte, selon la direction axiale de l'axe de pivotement D, une partie supérieure saillante 71 agencée pour venir en appui sur une surface intérieure 65 du tambour 6, et une partie inférieure saillante 72 agencée pour venir en appui sur une partie supérieure 85 du couvercle 8. La reprise d'ébat de l'arbre 3 est ainsi assurée par le ressort 7.In the second variant of the figure 2 , the spring 7 comprises, in the axial direction of the pivot axis D, a projecting upper portion 71 arranged to bear on an inner surface 65 of the drum 6, and a projecting lower portion 72 arranged to bear on a upper part 85 of the cover 8. The return of frolicking of the shaft 3 is thus ensured by the spring 7.

Le tambour 6 porte un couvercle 8, de préférence mais non nécessairement solidaire en pivotement du tambour 6, et dont un alésage 81 coopère avec une portée 31 de l'arbre 3. Une surface inférieure 82 du couvercle 8 est limitée en débattement par une surface supérieure 93 de la platine 9 ou d'une pierre 92 logée dans la platine 9, un alésage 91 de la platine 9 ou de la pierre 92 servant de pivot à la portée 31 de l'arbre 3.The drum 6 carries a cover 8, preferably but not necessarily pivotally attached to the drum 6, and a bore 81 cooperates with a bearing 31 of the shaft 3. A lower surface 82 of the cover 8 is limited in clearance by a surface upper 93 of the plate 9 or a stone 92 housed in the plate 9, a bore 91 of the plate 9 or the stone 92 serving as a pivot to the bearing 31 of the shaft 3.

L'ébat du tambour 6 est limité en appui inférieur par rapport au rochet 2 par une surface supérieure 61 du tambour 6 qui est limitée par une surface inférieure 22 du rochet 2. L'ébat du rochet 2 est limité en appui inférieur par rapport au pont 5, par un filet 24 du rochet 2 qui est limité par une surface inférieure 53 du pont 5 ou d'une pierre 52 que comporte le pont 5. L'ébat du couvercle 8 est limité en appui supérieur par rapport à la platine 9, par une surface inférieure 82 du couvercle 8 qui est limitée par une surface supérieure 93 de la platine 9 ou d'une pierre 91 que comporte la platine 9.The frolicking of the drum 6 is limited to lower bearing relative to the ratchet 2 by an upper surface 61 of the drum 6 which is limited by a lower surface 22 of the ratchet 2. The fretting of the ratchet 2 is limited in lower bearing relative to the bridge 5, by a thread 24 of the ratchet 2 which is limited by a lower surface 53 of the bridge 5 or a stone 52 that includes the bridge 5. The frog of the cover 8 is limited in upper support relative to the plate 9, by a lower surface 82 of the cover 8 which is bounded by an upper surface 93 of the plate 9 or a stone 91 that comprises the plate 9.

Le ressort moteur peut être réalisé en différents matériaux : acier au carbone, acier inoxydable, « Nivaflex® », silicium, DLC, quartz, verre, ou similaire. Dans une application particulière, le ressort 7 est réalisé dans un alliage multiphasé à base cobalt-nickel-chrome, comportant de 44 à 46% de cobalt, de 20 à 22% de nickel, de 17 à 19% de chrome, de 4 à 6% de fer, de 3 à 5% de tungstène, de 3 à 5% de molybdène, de 0 à 2% de titane, de 0 à 1% de béryllium, et de module d'Young compris entre 200 et 240 GPa et un module de cisaillement compris entre 80 et 100 GPa. Ce ressort 7 a de préférence un rapport largeur/épaisseur compris entre 3 et 23, et plus particulièrement entre 9 et 21.The motor spring can be made of different materials: carbon steel, stainless steel, "Nivaflex®", silicon, DLC, quartz, glass, or similar. In a particular application, the spring 7 is made of a cobalt-nickel-chromium-based multiphase alloy comprising from 44 to 46% of cobalt, from 20 to 22% of nickel, from 17 to 19% of chromium, from 4 to 6% of iron, 3 to 5% of tungsten, 3 to 5% of molybdenum, 0 to 2% of titanium, 0 to 1% of beryllium, and Young's modulus of between 200 and 240 GPa and a shear modulus between 80 and 100 GPa. This spring 7 preferably has a width / thickness ratio of between 3 and 23, and more particularly between 9 and 21.

Et le rayon maximal de la portée 31 de l'arbre 3 (sans tenir compte de la surépaisseur éventuelle propre à un crochet 32), réalisé en acier ou en acier inoxydable, par exemple en acier inoxydable trempable 4C27A (aussi dénommé selon les différentes normes 1.4197, ASTM 420F, ou DIN X22 CrMoNiS 131), par rapport à l'axe de pivotement D est inférieur à neuf fois l'épaisseur maximale du ressort 7. En particulier les réalisations illustrées permettent d'obtenir un rapport entre le rayon maximal de la portée 31 de l'arbre 3 et l'épaisseur du ressort 7 compris entre 3 et 9, et de préférence entre 4 et 6, de préférence voisin de cinq.And the maximum radius of the bearing 31 of the shaft 3 (without taking into account the possible extra thickness specific to a hook 32), made of steel or stainless steel, for example hardened stainless steel 4C27A (also named according to different standards 1.4197, ASTM 420F, or DIN X22 CrMoNiS 131), with respect to the pivot axis D is less than nine times the maximum thickness of the spring 7. In particular the embodiments illustrated make it possible to obtain a ratio between the maximum radius of the bearing 31 of the shaft 3 and the thickness of the spring 7 between 3 and 9, and preferably between 4 and 6, preferably close to five.

L'invention concerne encore un mouvement 100 d'horlogerie, comportant au moins une platine 9 et un pont 5 et un tel barillet 1. Le pont 5 peut comporter au moins un filet destiné à coopérer en appui, avec la moindre surface de contact possible, avec la surface supérieure 21 du rochet 2, en complément ou à la place du filet 24 du rochet 2.The invention also relates to a watch movement 100, comprising at least one plate 9 and a bridge 5 and such a cylinder 1. The bridge 5 may comprise at least one thread intended to cooperate in support, with the least possible contact surface , with the upper surface 21 of the ratchet 2, in addition to or in place of the thread 24 of the ratchet 2.

Dans la première variante de la figure 1, le pont 5 comporte une plaque de butée supérieure 56, fixée avec des vis ou rivets 58, ou encore collée ou soudée, ou similaire, dont une surface inférieure 57 est agencée pour limiter le débattement axial de l'arbre 3, et la platine 9 comporte une plaque de butée inférieure 96, fixée avec des vis ou rivets 98, ou encore collée ou soudée, ou similaire, dont une surface supérieure 97 est agencée pour limiter le débattement axial de l'arbre 3.In the first variant of the figure 1 , the bridge 5 comprises an upper stop plate 56, fixed with screws or rivets 58, or glued or welded, or the like, a lower surface 57 is arranged to limit the axial displacement of the shaft 3, and the plate 9 comprises a lower abutment plate 96, fixed with screws or rivets 98, or bonded or welded, or the like, an upper surface 97 of which is arranged to limit the axial displacement of the shaft 3.

L'invention concerne encore une montre 200 comportant un tel mouvement 100.The invention also relates to a watch 200 comprising such a movement 100.

En somme, la première variante de la figure 1, est avantageuse l'arbre 3 est de diamètre sensiblement constant, le crochet 32 est facile à usiner, les moyens d'entraînement 42 également. Le diamètre de bonde n'est limité que par l'encombrement de ces moyens d'entraînement en pivotement 42.In sum, the first variant of the figure 1 , is advantageous the shaft 3 is of substantially constant diameter, the hook 32 is easy to machine, the drive means 42 also. The bung diameter is limited only by the bulk of these pivoting drive means 42.

La deuxième variante de la figure 2 assure la reprise d'ébat de l'arbre 3 avec le ressort 7, l'arbre 3 adopte la même configuration avantageuse à bas coût de production que dans la première variante. Le diamètre de bonde est limité par les dimensions des moyens d'entraînement 42, typiquement un carré ou similaire.The second variant of the figure 2 ensures the recovery of frolicking of the shaft 3 with the spring 7, the shaft 3 adopts the same advantageous configuration at low production cost as in the first variant. The bung diameter is limited by the dimensions of the drive means 42, typically a square or the like.

Claims (13)

  1. Timepiece arbor-ratchet assembly, including an arbor (3) and a ratchet (2) for winding a timepiece barrel (1), said ratchet (2) including an axial passage (20) for fitting the ratchet onto said arbor (3) including protruding or recessed pivotal drive means (42), characterized in that said ratchet (2) includes, in said axial passage (20), at least one strip spring (230) permitting the fitting of said ratchet (2) on said arbor (3) and arranged to exert a bearing force on said pivotal drive means (42), wherein said at least one strip spring (230) forms complementary drive means (23) for pivotally driving said arbor (3).
  2. Arbor-ratchet assembly according to claim 1, characterized in that said ratchet (2) includes, for each said strip spring (230), a slot (231) opening into said axial passage (20).
  3. Arbor-ratchet assembly according to any of the preceding claims, characterized in that said ratchet (2) includes at least one upper abutment fillet (24) for limiting the travel of said ratchet (2) relative to a bottom plate or to a bridge or to a jewel.
  4. Arbor-ratchet assembly according to any of the preceding claims, characterized in that said ratchet (2) includes, in immediate proximity to said axial passage (20), at least one lower abutment fillet (25) for limiting the travel of said ratchet (2) relative to a drum or to a barrel core.
  5. Timepiece barrel (1) including an arbor-ratchet assembly according to any of the preceding claims, for pivotal assembly between a bottom plate (9) and a bridge (5) and including at least one spring (7), housed between a pivoting drum (6) and a cover (8), and said spring (7) being hooked between, at the outer end thereof said drum (6), and at the inner end thereof said arbor (3) of said arbor-ratchet assembly, said arbor (3) pivoting integrally, about a pivot axis (D), with said ratchet (2) of said arbor-ratchet assembly, characterized in that said arbor (3) includes, about a cylindrical drum element (31) along said pivot axis (D), on the one hand, a protruding hook (32) for hooking said spring (7), and on the other hand, protruding or recessed pivotal drive means (42), which cooperate with said complementary drive means (23) comprised in said ratchet (2) for the pivotal driving thereof.
  6. Barrel (1) according to claim 5, characterized in that said pivotal drive means (42) form an axial stop member for said ratchet (2) along said pivot axis (D), in that said arbor (3) is pivoted on an upper shoulder (13) in a bore (51) of said bridge (5) or of a jewel (52) comprised in said bridge (5), in that said ratchet (2) includes an upper abutment fillet (24) whose travel is limited by a lower surface (53) of said bridge (5) or of said jewel (52), said ratchet (2) being arranged between said bridge (5) and an upper surface (61) of said drum (6) opposite a lower surface (22) of said ratchet (2), and in that said drum (6) pivots in a bore (62) comprised therein in said cylindrical drum element (31).
  7. Barrel (1) according to claim 5 or 6, characterized in that said spring (7) includes, in the axial direction of said pivot axis (D), a protruding upper portion (71) arranged to bear on an inner surface (65) of said drum (6), and a lower protruding surface (72) arranged to bear on an upper portion (85) of said cover (8).
  8. Barrel (1) according to any of claims 5 to 7, characterized in that said drum (6) carries a cover (8) that pivots integrally with said drum (6), and a bore (81) of which cooperates with said cylindrical drum element (31) of said arbor (3), and in that the travel of a lower surface (82) of said cover (8) is limited by an upper surface (93) of said bottom plate (9) or of a jewel (92) housed in said bottom plate (9), a bore (91) of said bottom plate (9) or of said jewel (92) acting as pivot for said cylindrical drum element (31) of said arbor (3).
  9. Barrel (1) according to any of claims 5 to 8, characterized in that the endshake of said drum (6) is limited downwardly relative to said ratchet (2) by an upper surface (61) of said drum (6) which is limited by a lower surface (22) of said ratchet (2), in that the endshake of said ratchet (2) is limited downwardly relative to said bridge (5) by a fillet (24) of said ratchet (2) which is limited by a lower surface (53) of said bridge (5) or of a jewel (52) comprised in said bridge (5), and in that the endshake of said cover (8) is limited upwardly relative to said bottom plate (9) by a lower surface (82) of said cover (8) which is limited by an upper surface (93) of said bottom plate (9) or of a jewel (91) comprised in said bottom plate.
  10. Barrel (1) according to any of claims 5 to 9, characterized in that said spring (7) is made of a multiphase, cobalt-nickel-chromium based alloy, comprising 44 to 46% cobalt, 20 to 22% nickel, 17 to 19% chromium, 4 to 6 % iron, 3 to 5% tungsten, 3 to 5% molybdenum, 0 to 2% titanium, 0 to 1% beryllium, and having a Young's modulus of between 200 and 240 GPa and a shear modulus of between 80 and 100 GPa, in that said spring (7) has a width to thickness ratio of between 3 and 23, and in that the ratio between the maximum radius of a spring bearing shoulder (31) of said arbor (3) and the thickness of said spring (7) is between 3 and 9.
  11. Timepiece movement (100) including at least one bottom plate (9) and a bridge (5) and a barrel (1) according to any of claims 5 to 10.
  12. Movement (100) according to the preceding claim, characterized in that said bridge (5) includes an upper stop plate (56) of which a lower surface (57) is arranged to limit the axial travel of said arbor (3), and in that said bottom plate (9) includes a lower stop plate (96) of which an upper surface (97) is arranged to limit the axial travel of said arbor (3).
  13. Watch (200) including a movement (100) according to claim 11 or 12.
EP13779838.5A 2012-12-18 2013-10-21 Clock barrel Active EP2936253B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13779838.5A EP2936253B1 (en) 2012-12-18 2013-10-21 Clock barrel

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EP12197746.6A EP2746868B1 (en) 2012-12-18 2012-12-18 Clock barrel
PCT/EP2013/071989 WO2014095126A1 (en) 2012-12-18 2013-10-21 Timepiece barrel
EP13779838.5A EP2936253B1 (en) 2012-12-18 2013-10-21 Clock barrel

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EP2936253A1 EP2936253A1 (en) 2015-10-28
EP2936253B1 true EP2936253B1 (en) 2017-11-29

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JP (1) JP6027693B2 (en)
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JP6753127B2 (en) * 2016-04-25 2020-09-09 セイコーエプソン株式会社 Watch movements and watches
JP7133909B2 (en) * 2016-07-04 2022-09-09 ロレックス・ソシエテ・アノニム Watch assembly manufacturing method and watch assembly obtained by said manufacturing method
EP3575885B1 (en) * 2018-06-01 2022-09-21 Nivarox-FAR S.A. Horological barrrel
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CH1838572A4 (en) * 1972-12-18 1974-12-31
JPS50122264U (en) * 1974-03-22 1975-10-06
JPS5188757U (en) * 1975-01-11 1976-07-15
CH607738B (en) 1975-10-21 Ebauchesfabrik Eta Ag ARBRE DE BARILLET EXTRACTIBLE POUR MOUVEMENT DE MONTRE.
CH702994B1 (en) * 2010-04-26 2015-07-31 Eterna Sa Fabrique D Horlogerie Timepiece comprising a barrel mounted on a barrel bridge.

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WO2014095126A1 (en) 2014-06-26
US20150309475A1 (en) 2015-10-29
EP2746868A1 (en) 2014-06-25
JP6027693B2 (en) 2016-11-16
CN104885021B (en) 2017-04-12
US9291999B2 (en) 2016-03-22
JP2015537225A (en) 2015-12-24
EP2746868B1 (en) 2016-04-27
CN104885021A (en) 2015-09-02
EP2936253A1 (en) 2015-10-28
HK1214374A1 (en) 2016-07-22

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