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EP2746868A1 - Clock barrel - Google Patents

Clock barrel Download PDF

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Publication number
EP2746868A1
EP2746868A1 EP12197746.6A EP12197746A EP2746868A1 EP 2746868 A1 EP2746868 A1 EP 2746868A1 EP 12197746 A EP12197746 A EP 12197746A EP 2746868 A1 EP2746868 A1 EP 2746868A1
Authority
EP
European Patent Office
Prior art keywords
ratchet
shaft
drum
bridge
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.)
Granted
Application number
EP12197746.6A
Other languages
German (de)
French (fr)
Other versions
EP2746868B1 (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 SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to EP12197746.6A priority Critical patent/EP2746868B1/en
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to PCT/EP2013/071989 priority patent/WO2014095126A1/en
Priority to JP2015546908A priority patent/JP6027693B2/en
Priority to EP13779838.5A priority patent/EP2936253B1/en
Priority to HK16102157.7A priority patent/HK1214374B/en
Priority to US14/653,484 priority patent/US9291999B2/en
Priority to CN201380066191.5A priority patent/CN104885021B/en
Publication of EP2746868A1 publication Critical patent/EP2746868A1/en
Application granted granted Critical
Publication of EP2746868B1 publication Critical patent/EP2746868B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/16—Barrels; Arbors; Barrel axles
    • 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 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 a ratchet around 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 joined to this pivoting surface limits axial fretting of the shaft or the bung relative to a plate or a bridge carrying a stone or the like.
  • 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 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.
  • said shaft comprises, around a cylindrical shaft according to said pivot axis, on the one hand a hook projecting for the attachment of said spring, and on the other hand 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 thus 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 hooked between, at its outer end the drum 6 and at its inner end a shaft 3.
  • the shaft 3 is pivotally integral with 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 of pivoting drive 42, projecting or reentrant, 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. In a material-saving version, they are re-entrant, for example constituted by two plates 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.
  • pivoting drive means 42 constitute an axial stop of the ratchet 2 along the pivot axis D.
  • the shaft 3 is pivoted at a upper span 13 in a bore 51 of the bridge 5 or a stone 52 that includes the bridge 5.
  • the ratchet 2 preferably comprises, so as to reduce the friction torque and the yield loss, at least one upper thread d support 24 whose stroke is limited by a lower surface 53 of the bridge 5 or the 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.
  • 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 limited 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 13 1), relative 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 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.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Adornments (AREA)
  • Springs (AREA)

Abstract

The barrel (1) has a spring (7) accommodated between a drum (6) and a cover (8) and attached between the drum at its outer end and a shaft (3) at its inner end. The shaft is secured to pivot with a ratchet (2) around a pivot axis. The shaft comprises, around a cylindrical barrel (31) along the pivot axis, a projecting hook (32) for fixing the spring. The shaft includes a prominent or re-entrant driving unit (42) cooperating with a complementary driving unit (23) for pivotingly driving the ratchet. An independent claim is also included for a clockwork movement.

Description

Domaine de l'inventionField of the invention

L'invention concerne 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 rochet autour d'un axe de pivotement.The invention 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 a ratchet around 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 joined to this pivoting surface limits axial fretting of the shaft or the bung relative to a plate or a 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 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 ratchet drive.

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 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 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 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 a ratchet about a pivot axis, characterized in that said shaft comprises, around a cylindrical shaft according to said pivot axis, on the one hand a hook projecting for the attachment of said spring, and on the other hand 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.
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.

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 ainsi 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 rochet 2 autour d'un axe de pivotement D.The invention thus 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 hooked between, at its outer end the drum 6 and at its inner end a shaft 3. The shaft 3 is pivotally integral with 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. 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 of pivoting drive 42, projecting or reentrant, 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. In a material-saving version, they are re-entrant, for example constituted by two plates 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 pivot axis D. The shaft 3 is pivoted at a upper span 13 in a bore 51 of the bridge 5 or a stone 52 that includes the bridge 5. And the ratchet 2 preferably comprises, so as to reduce the friction torque and the yield loss, at least one upper thread d support 24 whose stroke is limited by a lower surface 53 of the bridge 5 or the 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 limited 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 13 1), 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 13 1), relative 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 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 (9)

Barillet d'horlogerie (1) pour montage pivotant entre une platine (9) et un pont (5) et comportant au moins un ressort (7) logé entre un tambour (6) pivotant et un couvercle (8) et accroché entre, à son extrémité extérieure ledit tambour (6) et à son extrémité intérieure un arbre (3) lequel est solidaire en pivotement avec un rochet (2) autour d'un axe de pivotement (D), caractérisé en ce que ledit arbre (3) comporte, autour d'un fût cylindrique (31) selon ledit axe de pivotement (D), d'une part un crochet (32) saillant pour l'accrochage dudit 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 ledit rochet (2) pour son entraînement en pivotement.Timepiece barrel (1) for pivotable mounting between a plate (9) and a bridge (5) and comprising at least one spring (7) housed between a pivoting drum (6) and a cover (8) and hung between, to its outer end said drum (6) and at its inner end a shaft (3) which is integral in rotation with a ratchet (2) about a pivot axis (D), characterized in that said shaft (3) comprises around a cylindrical shaft (31) along said pivot axis (D), on the one hand a hook (32) projecting for hooking said spring (7), and on the other hand driving means pivoting (42), projecting or reentrant, which cooperate with complementary drive means (23) that includes said ratchet (2) for its pivoting drive. Barillet (1) selon la revendication 1, caractérisé en ce que lesdits moyens d'entraînement en pivotement (42) constituent une butée axiale dudit rochet (2) selon ledit axe de pivotement (D) en ce que ledit arbre (3) est pivoté au niveau d'une portée supérieure (13) dans un alésage (51) dudit pont (5) ou d'une pierre (52) que comporte ledit pont (5), et en ce que ledit rochet (2) comporte un filet supérieur d'appui (24) dont la course est limitée par une surface inférieure (53) dudit pont (5) ou de ladite pierre (52), ledit rochet (2) étant compris entre ledit pont (5) et une surface supérieure (61) que comporte ledit tambour (6) face à une surface inférieure (22) dudit rochet (2), et en ce que ledit tambour (6) pivote au niveau d'un alésage (62) qu'il comporte sur ledit fût cylindrique (31).Barrel (1) according to claim 1, characterized in that said pivoting drive means (42) constitute an axial abutment of said ratchet (2) according to said pivot axis (D) in that said shaft (3) is pivoted at an upper bearing surface (13) in a bore (51) of said bridge (5) or a stone (52) of said bridge (5), and in that said ratchet (2) has a top thread bearing (24) whose travel is limited by a lower surface (53) of said bridge (5) or said stone (52), said ratchet (2) being between said bridge (5) and an upper surface (61); ) comprises said drum (6) facing a lower surface (22) of said ratchet (2), and in that said drum (6) pivots at a bore (62) which it comprises on said cylindrical drum ( 31). Barillet (1) selon la revendication 1 ou 2, caractérisé en ce que ledit ressort (7) comporte, selon la direction axiale dudit axe de pivotement (D), une partie supérieure saillante (71) agencée pour venir en appui sur une surface intérieure (65) dudit tambour (6), et une partie inférieure saillante (72) agencée pour venir en appui sur une partie supérieure (85) dudit couvercle (8).Barrel (1) according to claim 1 or 2, characterized in that said spring (7) comprises, in the axial direction of said pivot axis (D), a projecting upper portion (71) arranged to bear on an inner surface (65) of said drum (6), and a projecting lower portion (72) arranged to bear on an upper portion (85) of said cover (8). Barillet (1) selon l'une des revendications précédentes, caractérisé en ce que ledit tambour (6) porte un couvercle (8) solidaire en pivotement dudit tambour (6) et dont un alésage (81) coopère avec ledit fût cylindrique (31) dudit arbre (3), et en ce qu'une surface inférieure (82) dudit couvercle (8) est limitée en débattement par une surface supérieure (93) de ladite platine (9) ou d'une pierre (92) logée dans ladite platine (9), un alésage (91) de ladite platine (9) ou de ladite pierre (92) servant de pivot audit fût cylindrique (31) dudit arbre (3).Barrel (1) according to one of the preceding claims, characterized in that said drum (6) carries a lid (8) integral in pivoting of said drum (6) and a bore (81) cooperates with said cylindrical barrel (31) said shaft (3), and in that a lower surface (82) of said cover (8) is limited in deflection by an upper surface (93) of said plate (9) or a stone (92) housed in said platinum (9), a bore (91) of said platen (9) or said stone (92) serving as a pivot to said cylindrical barrel (31) of said shaft (3). Barillet (1) selon l'une des revendications 1 à 4, caractérisé en ce que l'ébat dudit tambour (6) est limité en appui inférieur par rapport audit rochet (2) par une surface supérieure (61) dudit tambour (6) qui est limitée par une surface inférieure (22) dudit rochet (2), en ce que l'ébat dudit rochet (2) est limité en appui inférieur par rapport audit pont (5), par un filet (24) dudit rochet (2) qui est limité par une surface inférieure (53) dudit pont (5) ou d'une pierre (52) que comporte ledit pont (5), et en ce que l'ébat dudit couvercle (8) est limité en appui supérieur par rapport à ladite platine (9), par une surface inférieure (82) dudit couvercle (8) qui est limitée par une surface supérieure (93) de ladite platine (9) ou d'une pierre (91) que comporte ladite platine.Barrel (1) according to one of claims 1 to 4, characterized in that the frage of said drum (6) is limited in lower bearing relative to said ratchet (2) by an upper surface (61) of said drum (6) which is limited by a bottom surface (22) of said ratchet (2), in that the shake of said ratchet (2) is limited in the lower support with respect to said bridge (5) by a thread (24) of said ratchet (2 ) which is limited by a lower surface (53) of said bridge (5) or a stone (52) which said bridge (5) comprises, and in that the frust of said cover (8) is limited in upper support by relative to said platen (9), by a lower surface (82) of said cover (8) which is bounded by an upper surface (93) of said platen (9) or a stone (91) that includes said platen. Barillet (1) selon l'une des revendications précédentes, caractérisé en ce que ledit 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, en ce que ledit ressort (7) a un rapport largeur/épaisseur compris entre 3 et 23, et en ce que le rapport entre le rayon maximal d'une portée (31) d'appui du ressort dudit arbre (3) et l'épaisseur dudit ressort (7) est compris entre 3 et 9.Barrel (1) according to one of the preceding claims, characterized in that said 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, 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 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 / thickness ratio of between 3 and 23, and that the ratio between the maximum radius of a bearing surface (31) of the spring of said shaft (3) and the thickness of said spring (7) is between 3 and 9. Mouvement (100) d'horlogerie, comportant au moins une platine (9) et un pont (5) et un barillet (1) selon l'une des revendications précédentes.Movement (100) watchmaking, comprising at least one plate (9) and a bridge (5) and a cylinder (1) according to one of the preceding claims. Mouvement (100) selon la revendication précédente, caractérisé en ce que ledit pont (5) comporte une plaque de butée supérieure (56) dont une surface inférieure (57) est agencée pour limiter le débattement axial dudit arbre (3), et en ce que ladite platine (9) comporte une plaque de butée inférieure (96) dont une surface supérieure (97) est agencée pour limiter le débattement axial dudit arbre (3).Movement (100) according to the preceding claim, characterized in that said bridge (5) comprises an upper stop plate (56) whose lower surface (57) is arranged to limit the axial displacement of said shaft (3), and in that that said plate (9) comprises a lower stop plate (96) having an upper surface (97) is arranged to limit the axial travel of said shaft (3). Montre (200) comportant un mouvement (100) selon la revendication 7 ou 8.Watch (200) having a movement (100) according to claim 7 or 8.
EP12197746.6A 2012-12-18 2012-12-18 Clock barrel Active EP2746868B1 (en)

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EP12197746.6A EP2746868B1 (en) 2012-12-18 2012-12-18 Clock barrel
JP2015546908A JP6027693B2 (en) 2012-12-18 2013-10-21 Clock barrel
EP13779838.5A EP2936253B1 (en) 2012-12-18 2013-10-21 Clock barrel
HK16102157.7A HK1214374B (en) 2012-12-18 2013-10-21 Timepiece barrel
PCT/EP2013/071989 WO2014095126A1 (en) 2012-12-18 2013-10-21 Timepiece barrel
US14/653,484 US9291999B2 (en) 2012-12-18 2013-10-21 Timepiece barrel
CN201380066191.5A CN104885021B (en) 2012-12-18 2013-10-21 Timepiece barrel

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JP2015537225A (en) 2015-12-24
HK1214374A1 (en) 2016-07-22
WO2014095126A1 (en) 2014-06-26
CN104885021A (en) 2015-09-02
EP2936253A1 (en) 2015-10-28
US20150309475A1 (en) 2015-10-29
CN104885021B (en) 2017-04-12
US9291999B2 (en) 2016-03-22
EP2936253B1 (en) 2017-11-29
EP2746868B1 (en) 2016-04-27

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