EP2756360B1 - Timepiece barrel assembly having a small core diameter - Google Patents

Timepiece barrel assembly having a small core diameter Download PDF

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Publication number
EP2756360B1
EP2756360B1 EP12759423.2A EP12759423A EP2756360B1 EP 2756360 B1 EP2756360 B1 EP 2756360B1 EP 12759423 A EP12759423 A EP 12759423A EP 2756360 B1 EP2756360 B1 EP 2756360B1
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EP
European Patent Office
Prior art keywords
spring
drum
barrel assembly
barrel
core
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
EP12759423.2A
Other languages
German (de)
French (fr)
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EP2756360A1 (en
Inventor
Laurent Kaelin
Baptist Wyssbrod
Arthur Queval
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
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ETA SA Manufacture Horlogere Suisse
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Priority to EP12759423.2A priority Critical patent/EP2756360B1/en
Publication of EP2756360A1 publication Critical patent/EP2756360A1/en
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Publication of EP2756360B1 publication Critical patent/EP2756360B1/en
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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
    • G04B1/165—Spring cylinder with friction transmission to the gearing (especially for Roskopf clockworks)
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/14—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
    • G04B1/16—Barrels; Arbors; Barrel axles
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor

Definitions

  • the invention relates to a watch-barrel assembly, comprising at least one barrel-drive spring mounted between, at one end, a barrel drum, and at a second end a receiving surface that comprises a barrel plug coaxial with said drum around of a pivot axis.
  • the invention also relates to a watch movement comprising at least one such barrel assembly.
  • the invention also relates to a timepiece comprising at least one such movement and / or at least one such barrel assembly.
  • the invention relates to the field of watchmaking, and more particularly the field of energy storage barrels, for feeding a movement, a ring, or other functionality of a room watchmaking.
  • one solution consists of a decrease in the diameter of the barrel shaft and the associated bung, so as to increase the space available in the drum. for the spring.
  • the ratio of the bead radius to the thickness of the spring is usually between 10 and 20, and the invention proposes to lower this ratio below 10, and preferably in the range between 5 and 10.
  • a ratchet is mounted axially on a barrel axis or on a bung, via a square, the ratchet being generally fixed by an axial screw.
  • the size of this screw and that of the square thus condition a minimum diameter of a pivoting surface.
  • a shoulder abutting with this pivoting surface limits axial fretting of the shaft or the bung relative to a plate or bridge carrying a stone or the like.
  • a diameter even greater than that of this shoulder is necessary for a pivoting guide surface of the drum on the shaft or on the bung, combined with a shoulder limiting axial fretting of the drum.
  • the respect of minimal sections of matter implies a quotation chain which results in a large size, difficult to reduce. In particular, it is not enough to reduce all the sizing, because the sections of material are then insufficient to ensure fatigue resistance.
  • the document CH 319 631 in the name of FELSA SA describes a double barrel, and how is limited the frolicking of each of the drums.
  • the frog of a lower drum is limited on the upper side by a flange of a sleeve, which is pushed towards a shoulder of the barrel shaft, by a nut screwed on the same shaft; and, on the lower side, by a bottom of a bung integral in pivoting of the barrel shaft by a flat.
  • the length of the lower bearing of the barrel shaft, and that of a barrel of the drum determine the frolicking of the drum, in relation to these flange and bottom surfaces.
  • VACUUMSCHMELZE discloses cobalt-nickel-chromium alloys, suitable for the manufacture of springs, especially for watches, and the associated heat treatment. These alloys have a very good ductility and a high Young's modulus.
  • the invention takes into account several solutions to achieve this reduction of the bung diameter.
  • An important constraint is to ensure the disassembly of the assembly, for a possible exchange of the mainspring or the complete barrel.
  • a first solution is to ensure the frolicking between drum and cover by the mainspring, transferring to the spring this frolicking adjustment function, in particular by equipping the spring protruding areas, such as dots, more rolled areas wide, flange reported, or the like. It is then possible to remove the bearing shoulders of the drum and cover on the barrel shaft or on the bung.
  • a second solution is to make a bung in several parts, including two or three parts.
  • This solution makes it possible in particular to make a bung of diameter smaller than the pivoting diameter of the drum.
  • the plug is introduced through the bore of the drum.
  • a shaft or a bung in two parts, or more, facilitates the machining of hook of hook of the shell of the mainspring.
  • the bung may include, for the ratchet drive, a conventional square, or a thread. Or, in a non-limiting way, in a second variant.
  • the bung can still include one or more washers or diameter catch rings for its guidance in platinum and bridge.
  • Another solution is to chase on the bung a setting washer of the drum-lid frog. This ring is mounted so as to avoid, for intervention on the barrel, any disassembly of a bridge.
  • the different variants proposed by the invention ensure ease of machining, ease of assembly, ease of disassembly, and control of axial debates between the various components and with respect to the bridges.
  • the invention relates to a watch barrel assembly, comprising at least one barrel drive spring mounted between, at one end a barrel drum, and at a second end a receiving surface that includes a plug of barrel coaxial with said drum about a pivot axis, characterized in that 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, 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 modulus of Young between 200 and 240 GPa and a shear modulus between 80 and 100 GPa, and having a width / thickness ratio of between 9 and 21, and in that the maximum radius of said bung, made of steel or stainless steel, with respect to said pivot axis is less than nine times the thickness r maximum of said spring, and further characterized in that said barrel assembly comprises,
  • said means for limiting said longitudinal gap between said drum and said spring are constituted by either at least one lug at at least one of the edges that comprises said spring, or by a clearance device that includes said drum on its largest inside diameter, said peripheral clearance being between two oblique bearing surfaces for the support and the peripheral holding of said spring.
  • the invention also relates to a watchmaking movement comprising at least one such barrel assembly for energy storage with an incorporated inlet, or else a ratchet integral with pivoting of said leap, or by a fixed toothing of a drum toothing. pivoting said drum, and an output constituted respectively, or by a mounted toothing drum pivotally attached to said drum, or by a ratchet integral pivotally of said bung.
  • the invention also relates to a timepiece comprising at least one such clockwork movement and / or at least one such set for storing energy with an incorporated input, or else a ratchet integral with pivoting said bung or by a toothing drum pivotally integral with said drum, and an outlet respectively constituted by a toothing drum mounted integral pivoting said drum, or by a ratchet integral pivotally of said bung.
  • the invention relates to the field of watchmaking, and more particularly the field of energy storage barrels, for feeding a movement, a ring, or other functionality of a room watchmaking.
  • the invention relates to a mechanical watch cylinder with reduced bung diameter.
  • the invention relates to a watch barrel assembly 1 comprising at least one mainspring 2 of the barrel.
  • This spring 2 is conventionally mounted between, at a first end 21, a barrel drum 3, and at a second end 22 a receiving surface 5 that includes a barrel plug 4 coaxial with the drum 3 about a pivot axis D.
  • this spring 2 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 of between 80 and 100 G Pa.
  • This spring 2 has a width / thickness ratio of between 3 and 23, and more particularly between 9 and 21.
  • the maximum radius of the bung 4, made of steel or stainless steel, relative to the pivot axis D is less than nine times the maximum thickness of the spring 2.
  • this barrel assembly 1 comprises, at the level of the spring 2 or the drum 3, means for limiting the longitudinal gap 6, in the direction of the pivot axis D, between the drum 3 and the motor spring 2.
  • the spring 2 advantageously comprises at least one projecting zone 23 arranged to cooperate in support with an inner face 31 of the drum 3 or / and with an inner face 71 of a cover 7 delimiting with the drum 3 a chamber 32 for housing the spring 2.
  • such a protruding zone 23 comprises at least one lug 24 at the level of at least one of the edges 27; 28
  • This spring region 23 is arranged to cooperate with an inner surface 31 of the drum 3, and / or with an inner surface 71 of the cover 7, and preferably with both.
  • the means for limiting the longitudinal gap 6 between the drum 3 and the spring 2 are thus constituted, or else by at least one lug 24 at the level of at least one of the edges 27, 28, that includes the spring 2, or by a peripheral clearance 36 that includes the drum 3 on its largest inside diameter, this peripheral clearance 36 being between two surfaces 33, 34, oblique for the support and the peripheral maintenance of spring 2.
  • the spring 2 is enclosed in a chamber 32 delimited by the drum 3 and a 7, and the barrel assembly 1 according to the invention comprises, other than on the plug 4, means for adjusting the longitudinal slab 6, in the direction of the pivot axis D, between the cover 7 and the spring 2.
  • this at least one lug 24 of the spring 2 is arranged to cooperate in support with an inner face 31 of the drum 3 and / or with an inner face 71 of a lid 7 delimiting with the drum 3 a chamber 32 for housing the spring 2.
  • such a protruding zone 23, or in particular this lug 24 comprises at least one coil extended in height of the spring 2.
  • such a protruding zone 23, or in particular this lug 24 comprises at least one attached flange 26, of height locally greater than that of the turns of the spring 2, and which is fixed thereto, for example by welding.
  • the drum 3 comprises, on its largest internal diameter, a peripheral clearance 36 between two upper and lower flanges 37 and 38, the edges of which, upper 27 and lower 28, respectively carry two bearing surfaces 33 and 34, oblique at an angle ⁇ , for the support and the peripheral support of the spring 2.
  • the means for limiting the longitudinal gap 6 between the drum 3 and the spring 2 are constituted by a peripheral clearance 36 that the drum 3 has on its plus large inner diameter, this peripheral clearance 36 being between two surfaces 33, 34, for the support and the peripheral support of the spring 2.
  • peripheral clearance 36 is cylindrical and at the same height as the spring 2 which is centered between the bearing surfaces 33, 34, which are flat and perpendicular to the pivot axis D.
  • the peripheral clearance 36 has a height less than that of the spring 2, which is centered obliquely between the bearing surfaces 33, 34, which comprise oblique faces turned toward each other so as to define a support v for singing surfaces 27,28, that includes the spring 2.
  • the spring 2 is held elastically without a hook around the receiving surface 5 which is a surface of revolution with respect to the pivot axis D.
  • the Figures 2 and 3 show a bung included in an envelope radius R0 about the axis D.
  • the receiving surface 5 comprises a hook 41 for hooking the shell of the spring 2, a clearance 52 allows the attachment of the spring2 and facilitates the machining of the hook 41.
  • Spans 43 and 44 are provided to cooperate with stones mounted in the plates or bridges of the movement receiving the barrel assembly 1.
  • the square 42 is provided for the attachment of a ratchet 12.
  • the spans 45 and 46 cooperate respectively with a bore 35 of the drum 3 and a bore 75 of the cover 7.
  • the receiving surface 5 is a surface of revolution relative to the pivot axis D.
  • this receiving surface is a contact surface for fixing the spring 2 by welding on the bung 4, by a point 53 , or along a segment, preferably parallel to the pivot axis D, passing through such a point 53, as visible on the Figures 15A, 15B, 15C .
  • FIG 15A the spring 2 bears at point 53 on a cylindrical portion of the bung 4 of small width.
  • the spring 2 bears at the point 53 on a flat tangent to one of the bearing surfaces 45 or 46 of the drum 3 or the cover 7, here preferably to the bearing 45 intended to cooperate with the bore 35 of the drum 3.
  • the figure 15C illustrates a cylindrical bearing surface of the spring 2 wider than that of the figure 15A and which is locally confused with one of the bearing surfaces 45 or 46 for guiding the drum 3 or the cover 7, here preferably with the bearing surface 45 intended to cooperate with the bore 35 of the drum 3.
  • the receiving surface 5 of the spring has, from the welding point 53 or from a welding segment passing through the point 53 and parallel to the pivot axis D, a helical section, so that after the first turn, the spring comes in superposition on itself without inflection or break of slope.
  • the surface of revolution 5 is constituted by a clearance 8 of height h included between two bearing surfaces 91, 92, belonging to flanges 47 and 48. These ranges 91 and 92 define the maximum radius of the bung 4 relative to the pivot axis D.
  • this clearance 8 is cylindrical and at the same height as the spring 2 which is centered between the bearing surfaces 91, 92 which are flat and perpendicular to the pivot axis D.
  • the clearance 8 has a depth P corresponding to twice the thickness of the spring 2.
  • the clearance 8 has a height h less than that of the spring 2 which is centered obliquely between the bearing surfaces 91, 92, an upper flange 47 and a lower flange 48.
  • These bearing surfaces 91 and 92 comprise oblique faces , inclined at an angle ⁇ , facing each other so as to define a support v for the edge surfaces 27 and 28 that the spring 2 comprises.
  • the Figure 1B illustrates an embodiment in which the drum comprises a shoulder 3A facing the spring 2, and can abut by a bearing surface 3B on a bearing surface 4B that includes the bung 4, and wherein the lid 7 has a shoulder 7A turned towards the spring 2, and can come to bear by a bearing surface 7B on a bearing surface 4C that includes the bung 4.
  • the barrel assembly 1 comprises a spring 2 which is fixed to the bung 4 by friction, the end of the spring 2 then preferably comprises a shoulder designed to hold the free end of the spring 2 during its winding .
  • the spring 2 forms with the bung 4 a welded or brazed monoblock spring-binder subassembly, or the like. This embodiment is particularly advantageous, economical, and a very easy assembly.
  • the invention also relates to a watchmaking movement 100 comprising at least one such barrel assembly 1 for storing energy with an incorporated input, or else a ratchet 12 pivotally mounted on the plug 4, or by a set of teeth drum 13 mounted pivotally mounted to the drum 3, and an outlet respectively formed, or by a toothing drum 13 mounted pivotally integral with the drum 3, or by a ratchet 12 mounted pivotally integral with the bung 4.
  • the invention also relates to a timepiece 1000 comprising at least one such watch movement 100 and / or at least one such barrel assembly for energy storage with an incorporated entrance, or by a ratchet 12 mounted pivotally mounted on the bung 4, or by a toothing drum 13 mounted pivotally integral with the drum 3, and an outlet constituted respectively, or by a toothing drum 13 mounted pivotally integral with the drum 3, or by a ratchet 12 mounted pivotally integral with the bung 4.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Springs (AREA)
  • Gears, Cams (AREA)

Description

Domaine de l'inventionField of the invention

L'invention concerne un ensemble barillet d'horlogerie, comportant au moins un ressort moteur de barillet monté entre, à une première extrémité un tambour de barillet, et à une deuxième extrémité une surface de réception que comporte une bonde de barillet coaxiale audit tambour autour d'un axe de pivotement.The invention relates to a watch-barrel assembly, comprising at least one barrel-drive spring mounted between, at one end, a barrel drum, and at a second end a receiving surface that comprises a barrel plug coaxial with said drum around of a pivot axis.

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

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

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

Arrière-plan de l'inventionBackground of the invention

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

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

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

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

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

Le document CH 319 631 au nom de FELSA SA décrit un double barillet, et la façon dont est limité l'ébat de chacun des tambours. L'ébat d'un tambour inférieur est limité du côté supérieur par une collerette d'un manchon, lequel est poussé vers un épaulement de l'arbre de barillet, par un écrou vissé sur ce même arbre ; et, du côté inférieur, par un fond d'une bonde solidaire en pivotement de l'arbre de barillet par un plat. La longueur de la portée inférieure de l'arbre de barillet, et celle d'un canon du tambour déterminent l'ébat du tambour, en relation avec ces surfaces de collerette et de fond.The document CH 319 631 in the name of FELSA SA describes a double barrel, and how is limited the frolicking of each of the drums. The frog of a lower drum is limited on the upper side by a flange of a sleeve, which is pushed towards a shoulder of the barrel shaft, by a nut screwed on the same shaft; and, on the lower side, by a bottom of a bung integral in pivoting of the barrel shaft by a flat. The length of the lower bearing of the barrel shaft, and that of a barrel of the drum determine the frolicking of the drum, in relation to these flange and bottom surfaces.

Le document US 1 110 061 au nom de KIENZLE décrit une bonde montée débrayable sur un arbre de barillet (selon le sens de pivotement) ; cette bonde est en appui à la fois sur la platine et le pont, tandis que deux épaulements de cette bonde limitent la course du tambour et du couvercle.The document US 1 110 061 in the name of KIENZLE discloses a disengageable mounted bung on a barrel shaft (in the direction of pivoting); this bung is supported both on the plate and the bridge, while two shoulders of this bung limit the travel of the drum and cover.

Le document US 3 564 839 au nom de WUTHRICH décrit un barillet qui comporte un filet sur le pont pour appui du tambour, et un tambour à canon. Le couvercle est une simple tôle posée sur la platine, sans lien avec l'arbre ni avec le tambour. L'arbre comporte deux épaulements, l'un venant en appui sur cette bonde, l'autre destiné à coopérer en appui avec le canon du tambour.The document US 3,564,839 to WUTHRICH describes a barrel which has a thread on the bridge for support of the drum, and a barrel drum. The lid is a simple sheet placed on the plate, without connection with the shaft or with the drum. The shaft has two shoulders, one bearing on this bung, the other intended to cooperate in support with the drum barrel.

Le document GB 1 162 296 au nom de CITIZEN divulgue un ressort avec une épaisseur variable, mais aucun enseignement ne concerne la qualification de sa hauteur.The document GB 1 162 296 in the name of CITIZEN discloses a spring with a variable thickness, but no teaching concerns the qualification of its height.

Le document CH 341 764 au nom de AUGE décrit un ressort avec des lames de largeurs différentes, soudées entre elles.The document CH 341 764 in the name of AUGE describes a spring with blades of different widths, welded together.

Le document DE 10 2009 014442 au nom de VACUUMSCHMELZE décrit des alliages cobalt-nickel-chrome, convenant pour la fabrication de ressorts, notamment pour montres, et le traitement thermique associé. Ces alliages présentent une très bonne ductilité et un module d'Young élevé.The document DE 10 2009 014442 in the name of VACUUMSCHMELZE discloses cobalt-nickel-chromium alloys, suitable for the manufacture of springs, especially for watches, and the associated heat treatment. These alloys have a very good ductility and a high Young's modulus.

Tous ces documents décrivent des arbres de barillet avec crochet d'entraînement du ressort, mais aucun avec un arbre de barillet de révolution pour la réception du ressort. Ils ne décrivent pas particulièrement le dégagement éventuel, au niveau de l'arbre ou de la bonde, dans lequel serait positionné le ressort. Certains documents décrivent des ressorts dont la rigidité est modifiée au niveau de la spire interne terminale, par modification d'épaisseur ou autre, la géométrie du ressort n'y est pas prise en compte pour son centrage.All of these documents describe barrel shafts with spring drive hook, but none with a revolution barrel shaft for the reception of the spring. They do not particularly describe the possible clearance, at the level of the shaft or the bung, in which the spring would be positioned. Some documents describe springs whose rigidity is modified at level of the internal end turn, by thickness change or otherwise, the geometry of the spring is not taken into account for its centering.

Résumé de l'inventionSummary of the invention

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

L'invention prend en compte plusieurs solutions pour arriver à cette diminution du diamètre de bonde.The invention takes into account several solutions to achieve this reduction of the bung diameter.

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

Les différentes voies proposées par l'invention peuvent être combinées entre elles, pour obtenir un résultat optimal en fonction de l'encombrement disponible, de la position du rochet, de la présence ou non d'un couvercle pour la fermeture du barillet, cette fonction pouvant aussi être dévolue au rochet.The different routes proposed by the invention can be combined with each other, to obtain an optimal result depending on the space available, the position of the ratchet, the presence or absence of a lid for closing the cylinder, this function can also be devolved to the ratchet.

Une première solution consiste à assurer l'ébat entre tambour et couvercle par le ressort de barillet, en reportant sur le ressort cette fonction de réglage d'ébat, en particulier en équipant le ressort de zones saillantes, telles qu'ergots, zones laminées plus larges, bride rapportée, ou similaire. Il est alors possible de supprimer les épaulements d'appui du tambour et du couvercle sur l'arbre de barillet ou sur la bonde.A first solution is to ensure the frolicking between drum and cover by the mainspring, transferring to the spring this frolicking adjustment function, in particular by equipping the spring protruding areas, such as dots, more rolled areas wide, flange reported, or the like. It is then possible to remove the bearing shoulders of the drum and cover on the barrel shaft or on the bung.

Une deuxième solution consiste à réaliser une bonde en plusieurs parties, notamment en deux ou trois parties. Cette solution permet notamment de réaliser une bonde de diamètre inférieur au diamètre de pivotement du tambour. Avantageusement, la bonde est introduite par l'alésage du tambour. Un arbre ou une bonde en deux parties, ou davantage, facilite l'usinage du crochet d'accrochage du coquillon du ressort de barillet.A second solution is to make a bung in several parts, including two or three parts. This solution makes it possible in particular to make a bung of diameter smaller than the pivoting diameter of the drum. Advantageously, the plug is introduced through the bore of the drum. A shaft or a bung in two parts, or more, facilitates the machining of hook of hook of the shell of the mainspring.

La bonde peut comporter, pour l'entraînement du rochet, un carré classique, ou encore un filetage. Ou encore, de façon non limitative, dans une deuxième variante.The bung may include, for the ratchet drive, a conventional square, or a thread. Or, in a non-limiting way, in a second variant.

La bonde peut encore comporter une ou plusieurs rondelles ou bagues de rattrapage de diamètre pour son guidage dans platine et pont.The bung can still include one or more washers or diameter catch rings for its guidance in platinum and bridge.

Une autre solution consiste à chasser sur la bonde une rondelle de réglage de l'ébat tambour-couvercle. Cette bague est montée de façon à éviter, pour une intervention sur le barillet, tout démontage d'un pont.Another solution is to chase on the bung a setting washer of the drum-lid frog. This ring is mounted so as to avoid, for intervention on the barrel, any disassembly of a bridge.

Une autre solution encore consiste à assurer le pivotement dans les ponts pour le tambour ou/et le couvercle, au lieu d'effectuer ce pivotement au niveau de l'arbre de barillet ou de la bonde. Avantageusement, à la fois le tambour et le couvercle sont pivotés dans une platine et un pont.Yet another solution is to provide pivoting in the bridges for the drum and / or the cover, instead of performing this pivoting at the barrel shaft or the plug. Advantageously, both the drum and the lid are pivoted in a plate and a bridge.

Les différentes variantes proposées par l'invention assurent une facilité d'usinage, une facilité de montage, une facilité de démontage, et une maîtrise des débats axiaux entre les différents composants et par rapport aux ponts.The different variants proposed by the invention ensure ease of machining, ease of assembly, ease of disassembly, and control of axial debates between the various components and with respect to the bridges.

Dans une version particulière, l'invention concerne un ensemble barillet d'horlogerie, comportant au moins un ressort moteur de barillet monté entre, à une première extrémité un tambour de barillet, et à une deuxième extrémité une surface de réception que comporte une bonde de barillet coaxiale audit tambour autour d'un axe de pivotement, caractérisé en ce que 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, et ayant un rapport largeur/épaisseur compris entre 9 et 21, et en ce que le rayon maximal de ladite bonde, réalisée en acier ou en acier inoxydable, par rapport audit axe de pivotement est inférieur à neuf fois l'épaisseur maximale dudit ressort, et encore caractérisé en ce que ledit ensemble barillet comporte, au niveau dudit ressort ou dudit tambour, des moyens de limitation de l'ébat longitudinal, selon la direction dudit axe de pivotement, entre ledit tambour et ledit ressort moteur.In a particular version, the invention relates to a watch barrel assembly, comprising at least one barrel drive spring mounted between, at one end a barrel drum, and at a second end a receiving surface that includes a plug of barrel coaxial with said drum about a pivot axis, characterized in that 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, 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 modulus of Young between 200 and 240 GPa and a shear modulus between 80 and 100 GPa, and having a width / thickness ratio of between 9 and 21, and in that the maximum radius of said bung, made of steel or stainless steel, with respect to said pivot axis is less than nine times the thickness r maximum of said spring, and further characterized in that said barrel assembly comprises, at said spring or said drum, means for limiting the longitudinal frust, in the direction of said pivot axis, between said drum and said motor spring.

Selon une caractéristique de l'invention, lesdits moyens de limitation dudit ébat longitudinal entre ledit tambour et ledit ressort sont constitués, ou bien par au moins un ergot au niveau d'au moins un des chants que comporte ledit ressort, ou bien par un dégagement périphérique que comporte ledit tambour sur son plus grand diamètre intérieur, ledit dégagement périphérique étant compris entre deux portées obliques pour l'appui et le maintien périphérique dudit ressort.According to one characteristic of the invention, said means for limiting said longitudinal gap between said drum and said spring are constituted by either at least one lug at at least one of the edges that comprises said spring, or by a clearance device that includes said drum on its largest inside diameter, said peripheral clearance being between two oblique bearing surfaces for the support and the peripheral holding of said spring.

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

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

Description sommaire des dessinsBrief description of the drawings

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

  • la figure 1 représente, de façon schématisée et en coupe dans un plan passant par son axe de pivotement, un barillet d'horlogerie,
  • la figure 1A représente, de façon schématisée et en coupe dans un plan passant par son axe de pivotement, un barillet selon l'invention,
  • la figure 1B représente, de façon schématisée et en coupe dans un plan passant par son axe de pivotement, une autre variante de barillet selon l'invention,
  • la figure 2 représente, de façon schématisée et en perspective, une bonde de barillet selon l'invention,
  • la figure 3 représente, de façon schématisée et en perspective, une variante de bonde selon l'invention, comportant un dégagement de maintien du ressort de barillet,
  • la figure 4 représente, de façon schématisée et en vue de dessus, la bonde de la figure 2,
  • les figures 5A, 5B, et 5C représentent, de façon schématisée, respectivement en élévation, en coupe, et en plan, une bonde avec un ressort monté par friction, et l'extrémité de ce ressort présentée à plat,
  • les figures 6A, 6B, et 6C représentent, de façon schématisée, respectivement en élévation, en coupe, et en plan, une bonde avec un autre type de ressort monté par friction, et l'extrémité de ce ressort présentée à plat,
  • la figure 7 représente, de façon schématisée, partielle, et en coupe dans un plan passant par son axe de pivotement, un barillet selon l'invention, avec un aménagement particulier de la bonde au niveau de la surface de réception interne du ressort,
  • la figure 8 représente, de façon schématisée, partielle, et en coupe dans un plan passant par son axe de pivotement, dans sa partie droite un barillet selon l'invention, avec un ressort muni d'ergots selon l'invention, et la figure 8A représente, à plat, un détail de ce ressort,
  • la figure 9 représente, de façon schématisée et en perspective, un ressort selon l'invention avec un laminage localement plus large faisant saillie, et la figure 10 montre un détail de ce ressort,
  • la figure 11 représente, de façon schématisée et en perspective, un ressort selon l'invention avec une bride rapportée faisant saillie, et la figure 12 montre un détail de ce ressort,
  • la figure 13 représente, de façon schématisée, partielle, et en coupe dans un plan passant par son axe de pivotement, un barillet selon l'invention, avec un aménagement particulier du plus grand diamètre de ce barillet au niveau de la surface de réception externe du ressort,
  • la figure 14 représente, sous forme d'un schéma-blocs, un mouvement d'horlogerie comportant un ensemble barillet selon l'invention, et une pièce d'horlogerie comportant ce mouvement et un ensemble barillet selon l'invention,
  • les figures 15A, 15B, et 15C représentent, de façon et en perspectives, différentes variantes d'une bonde selon l'invention agencées pour le soudage du ressort de barillet,
  • la figure 16 représente, sous forme d'un schéma-blocs, un mouvement d'horlogerie comportant un ensemble barillet selon l'invention, et une pièce d'horlogerie comportant ce mouvement et un ensemble barillet selon l'invention.
Other features and advantages of the invention will appear better on reading the detailed description which follows, with reference to the drawings annéxés, where:
  • the figure 1 represents, schematically and in section in a plane passing through its pivot axis, a watch cylinder,
  • the Figure 1A represents, schematically and in section in a plane passing through its pivot axis, a cylinder according to the invention,
  • the Figure 1B represents, schematically and in section in a plane passing through its pivot axis, another variant of a cylinder according to the invention,
  • the figure 2 represents schematically and in perspective, a barrel plug according to the invention,
  • the figure 3 represents schematically and in perspective, a bung variant according to the invention, comprising a holding clearance of the mainspring,
  • the figure 4 represents, schematically and in top view, the bung of the figure 2 ,
  • the FIGS. 5A, 5B, and 5C show, schematically, respectively in elevation, in section, and in plan, a bung with a spring mounted by friction, and the end of this spring presented flat,
  • the Figures 6A, 6B, and 6C show, schematically, respectively in elevation, in section, and in plan, a bung with another type of spring mounted by friction, and the end of this spring presented flat,
  • the figure 7 represents, schematically, partially, and in section in a plane passing through its pivot axis, a cylinder according to the invention, with a special arrangement of the bung at the internal receiving surface of the spring,
  • the figure 8 represents, schematically, partially, and in section in a plane passing through its axis of pivoting, in its right part a cylinder according to the invention, with a spring provided with pins according to the invention, and the figure 8A represents, flat, a detail of this spring,
  • the figure 9 represents, schematically and in perspective, a spring according to the invention with a locally wider rolling projecting, and the figure 10 shows a detail of this spring,
  • the figure 11 represents schematically and in perspective, a spring according to the invention with a projecting flange projecting, and the figure 12 shows a detail of this spring,
  • the figure 13 represents, schematically, partially, and in section in a plane passing through its pivot axis, a cylinder according to the invention, with a particular arrangement of the largest diameter of this barrel at the external receiving surface of the spring,
  • the figure 14 represents, in the form of a block diagram, a watch movement comprising a barrel assembly according to the invention, and a timepiece comprising this movement and a barrel assembly according to the invention,
  • the Figures 15A, 15B, and 15C represent, in a manner and in perspective, different variants of a bung according to the invention arranged for the welding of the mainspring,
  • the figure 16 represents, in the form of a block diagram, a watch movement comprising a barrel assembly according to the invention, and a timepiece comprising this movement and a barrel assembly according to the invention.

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

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

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

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

Selon l'invention, ce ressort 2 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 G Pa.According to the invention, this spring 2 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 of between 80 and 100 G Pa.

Ce ressort 2 a un rapport largeur/épaisseur compris entre 3 et 23, et plus particulièrement entre 9 et 21.This spring 2 has a width / thickness ratio of between 3 and 23, and more particularly between 9 and 21.

Et le rayon maximal de la bonde 4, réalisée en acier ou en acier inoxydable, par rapport à l'axe de pivotement D est inférieur à neuf fois l'épaisseur maximale du ressort 2.And the maximum radius of the bung 4, made of steel or stainless steel, relative to the pivot axis D is less than nine times the maximum thickness of the spring 2.

Et cet ensemble barillet 1 comporte, au niveau du ressort 2 ou du tambour 3, des moyens de limitation de l'ébat longitudinal 6, selon la direction de l'axe de pivotement D, entre le tambour 3 et le ressort 2 moteur.And this barrel assembly 1 comprises, at the level of the spring 2 or the drum 3, means for limiting the longitudinal gap 6, in the direction of the pivot axis D, between the drum 3 and the motor spring 2.

Dans une variante particulière, tel que visible sur les figures 8 et 8A, le ressort 2 comporte avantageusement au moins une zone saillante 23 agencée pour coopérer en appui avec une face interne 31 du tambour 3 ou/et avec une face interne 71 d'un couvercle 7 délimitant avec le tambour 3 une chambre 32 de logement du ressort 2.In a particular variant, as visible on the Figures 8 and 8A , the spring 2 advantageously comprises at least one projecting zone 23 arranged to cooperate in support with an inner face 31 of the drum 3 or / and with an inner face 71 of a cover 7 delimiting with the drum 3 a chamber 32 for housing the spring 2.

Tel que visible sur la figure 8A, dans une première variante, une telle zone saillante 23 comporte au moins un ergot 24 au niveau d'au moins un des chants 27; 28 que comporte le ressort 2. Cette zone saillante 23 est agencée pour coopérer avec une surface intérieure 31 du tambour 3, ou/et avec une surface intérieure 71 du couvercle 7, et de préférence avec l'une et l'autre.
Selon une caractéristique particulière de l'invention, les moyens de limitation de l'ébat longitudinal 6 entre le tambour 3 et le ressort 2 sont ainsi constitués, ou bien par au moins un ergot 24 au niveau d'au moins un des chants 27,28, que comporte le ressort 2, ou bien par un dégagement périphérique 36 que comporte le tambour 3 sur son plus grand diamètre intérieur, ce dégagement périphérique 36 étant compris entre deux portées 33, 34, obliques pour l'appui et le maintien périphérique du ressort 2.As visible on the figure 8A in a first variant, such a protruding zone 23 comprises at least one lug 24 at the level of at least one of the edges 27; 28 This spring region 23 is arranged to cooperate with an inner surface 31 of the drum 3, and / or with an inner surface 71 of the cover 7, and preferably with both.
According to one particular characteristic of the invention, the means for limiting the longitudinal gap 6 between the drum 3 and the spring 2 are thus constituted, or else by at least one lug 24 at the level of at least one of the edges 27, 28, that includes the spring 2, or by a peripheral clearance 36 that includes the drum 3 on its largest inside diameter, this peripheral clearance 36 being between two surfaces 33, 34, oblique for the support and the peripheral maintenance of spring 2.

Dans une réalisation préférée, tel que visible sur les figures 1A et 1B, le ressort 2 est enfermé dans une chambre 32 délimitée par le tambour 3 et un couvercle 7, et l'ensemble barillet 1 selon l'invention comporte, ailleurs que sur la bonde 4, des moyens d'ajustement de l'ébat longitudinal 6, selon la direction de l'axe de pivotement D, entre le couvercle 7 et le ressort 2.In a preferred embodiment, as visible on the Figures 1A and 1B the spring 2 is enclosed in a chamber 32 delimited by the drum 3 and a 7, and the barrel assembly 1 according to the invention comprises, other than on the plug 4, means for adjusting the longitudinal slab 6, in the direction of the pivot axis D, between the cover 7 and the spring 2.

Selon une caractéristique particulière de l'invention, cet au moins un ergot 24 du ressort 2 est agencé pour coopérer en appui avec une face interne 31 du tambour 3 ou/et avec une face interne 71 d'un couvercle 7 délimitant avec le tambour 3 une chambre 32 de logement du ressort 2.According to a particular feature of the invention, this at least one lug 24 of the spring 2 is arranged to cooperate in support with an inner face 31 of the drum 3 and / or with an inner face 71 of a lid 7 delimiting with the drum 3 a chamber 32 for housing the spring 2.

Selon une caractéristique particulière de l'invention, dans une autre variante visible sur la figure 9 ou 10, une telle zone saillante 23, ou en particulier cet ergot 24, comporte au moins une spire étendue en hauteur du ressort 2.According to a particular characteristic of the invention, in another variant visible on the figure 9 or 10 such a protruding zone 23, or in particular this lug 24, comprises at least one coil extended in height of the spring 2.

Dans une autre variante encore, visible sur les figures 11 et 12, une telle zone saillante 23, ou en particulier cet ergot 24, comporte au moins une bride rapportée 26, de hauteur localement supérieure à celle des spires du ressort 2, et qui est fixée à ce dernier, par exemple par soudage.In another variant, visible on the Figures 11 and 12 such a protruding zone 23, or in particular this lug 24, comprises at least one attached flange 26, of height locally greater than that of the turns of the spring 2, and which is fixed thereto, for example by welding.

Dans la réalisation particulière de la figure 13, le tambour 3 comporte, sur son plus grand diamètre intérieur, un dégagement périphérique 36 compris entre deux collerettes supérieure 37 et inférieure 38 dont les chants, supérieur 27 et inférieur 28, portent respectivement deux portées 33 et 34, obliques selon un angle α, pour l'appui et le maintien périphérique du ressort 2. Dans une telle variante, les moyens de limitation de l'ébat longitudinal 6 entre le tambour 3 et le ressort 2 sont constitués par un dégagement périphérique 36 que comporte le tambour 3 sur son plus grand diamètre intérieur, ce dégagement périphérique 36 étant compris entre deux portées 33, 34, pour l'appui et le maintien périphérique du ressort 2.In the particular realization of the figure 13 , the drum 3 comprises, on its largest internal diameter, a peripheral clearance 36 between two upper and lower flanges 37 and 38, the edges of which, upper 27 and lower 28, respectively carry two bearing surfaces 33 and 34, oblique at an angle α, for the support and the peripheral support of the spring 2. In such a variant, the means for limiting the longitudinal gap 6 between the drum 3 and the spring 2 are constituted by a peripheral clearance 36 that the drum 3 has on its plus large inner diameter, this peripheral clearance 36 being between two surfaces 33, 34, for the support and the peripheral support of the spring 2.

La combinaison des réalisations des figures 7 et 13 est de réalisation facile et garantit un bon maintien du ressort 2. Dans le cas préféré où celui-ci comporte une zone saillante 23, elle est à une cote fixe par rapport au tambour 3 ou/et au couvercle 7, ce qui garantit un réglage parfait de l'ébat.The combination of the achievements of figures 7 and 13 is easy to achieve and ensures good retention of the spring 2. In the preferred case where it has a projecting zone 23, it is at a fixed dimension relative to the drum 3 and / or the cover 7, which guarantees a setting perfect of the frolic.

Dans une variante, le dégagement périphérique 36 est cylindrique et a la même hauteur que le ressort 2 lequel est centré entre les portées 33, 34, qui sont planes et perpendiculaires à l'axe de pivotement D.In a variant, the peripheral clearance 36 is cylindrical and at the same height as the spring 2 which is centered between the bearing surfaces 33, 34, which are flat and perpendicular to the pivot axis D.

Selon une autre caractéristique particulière de l'invention, le dégagement périphérique 36 a une hauteur inférieure à celle du ressort 2, lequel est centré en appui oblique entre les portées 33, 34, lesquelles comportent des faces obliques tournées l'une vers l'autre de façon à définir un vé d'appui pour des surfaces de chant 27,28, que comporte ce ressort 2.According to another particular characteristic of the invention, the peripheral clearance 36 has a height less than that of the spring 2, which is centered obliquely between the bearing surfaces 33, 34, which comprise oblique faces turned toward each other so as to define a support v for singing surfaces 27,28, that includes the spring 2.

Selon une caractéristique particulière de l'invention, le ressort 2 est maintenu élastiquement sans crochet autour de la surface de réception 5 qui est une surface de révolution par rapport à l'axe de pivotement D.According to a particular characteristic of the invention, the spring 2 is held elastically without a hook around the receiving surface 5 which is a surface of revolution with respect to the pivot axis D.

Les figures 2 et 3 montrent une bonde incluse dans une enveloppe de rayon R0 autour de l'axe D. La surface de réception 5 comporte un crochet 41 pour l'accrochage du coquillon du ressort 2, un dégagement 52 permet l'accrochage du ressort2 et facilite l'usinage du crochet 41. Des portées 43 et 44 sont prévues pour coopérer avec des pierres montées dans des platines ou ponts du mouvement recevant l'ensemble barillet 1. Le carré 42 est prévu pour l'accrochage d'un rochet 12. Les portées 45 et 46 coopèrent respectivement avec un alésage 35 du tambour 3 et un alésage 75 du couvercle 7.The Figures 2 and 3 show a bung included in an envelope radius R0 about the axis D. The receiving surface 5 comprises a hook 41 for hooking the shell of the spring 2, a clearance 52 allows the attachment of the spring2 and facilitates the machining of the hook 41. Spans 43 and 44 are provided to cooperate with stones mounted in the plates or bridges of the movement receiving the barrel assembly 1. The square 42 is provided for the attachment of a ratchet 12. The spans 45 and 46 cooperate respectively with a bore 35 of the drum 3 and a bore 75 of the cover 7.

Dans une réalisation particulière, tel que visible sur les figures 3, 15A, 15B, 15C, la surface de réception 5 est une surface de révolution par rapport à l'axe de pivotement D. De préférence, cette surface de réception est une surface de contact pour une fixation du ressort 2 par soudure sur la bonde 4, par un point 53, ou encore le long d'un segment, de préférence parallèle à l'axe de pivotement D, passant par un tel point 53, tel que visible sur les figures 15A, 15B, 15C.In a particular embodiment, as visible on the figures 3 , 15A, 15B, 15C , the receiving surface 5 is a surface of revolution relative to the pivot axis D. Preferably, this receiving surface is a contact surface for fixing the spring 2 by welding on the bung 4, by a point 53 , or along a segment, preferably parallel to the pivot axis D, passing through such a point 53, as visible on the Figures 15A, 15B, 15C .

Dans le cas de la figure 15A le ressort 2 vient en appui au point 53 sur une portion cylindrique de la bonde 4 de petite largeur. Dans le cas de la figure 15B le ressort 2 vient en appui au point 53 sur un plat tangent à l'une des portées 45 ou 46 de guidage du tambour 3 ou du couvercle 7, ici préférentiellement à la portée 45 destinée à coopérer avec l'alésage 35 du tambour 3. La figure 15C illustre une surface cylindrique d'appui du ressort 2 plus large que celle de la figure 15A, et qui est localement confondue avec l'une des portées 45 ou 46 de guidage du tambour 3 ou du couvercle 7, ici préférentiellement avec la portée 45 destinée à coopérer avec l'alésage 35 du tambour 3. Dans une variante particulière de la figure 15c, la surface de réception 5 du ressort a, depuis le point de soudage 53 ou depuis un segment de soudage passant par le point 53 et parallèle à l'axe de pivotement D, une section hélicoïdale, de façon à ce qu'après le premier tour, le ressort vienne en superposition sur lui-même sans inflexion ni rupture de pente.In the case of figure 15A the spring 2 bears at point 53 on a cylindrical portion of the bung 4 of small width. In the case of figure 15B the spring 2 bears at the point 53 on a flat tangent to one of the bearing surfaces 45 or 46 of the drum 3 or the cover 7, here preferably to the bearing 45 intended to cooperate with the bore 35 of the drum 3. The figure 15C illustrates a cylindrical bearing surface of the spring 2 wider than that of the figure 15A and which is locally confused with one of the bearing surfaces 45 or 46 for guiding the drum 3 or the cover 7, here preferably with the bearing surface 45 intended to cooperate with the bore 35 of the drum 3. In a particular variant of the figure 15c , the receiving surface 5 of the spring has, from the welding point 53 or from a welding segment passing through the point 53 and parallel to the pivot axis D, a helical section, so that after the first turn, the spring comes in superposition on itself without inflection or break of slope.

Dans une réalisation particulière, tel que visible sur la figure 3, la surface de révolution 5 est constituée par un dégagement 8 de hauteur h compris entre deux portées 91, 92, appartenant à des collerettes 47 et 48. Ces portées 91 et 92 définissent le rayon maximal de la bonde 4 par rapport à l'axe de pivotement D. De préférence, ce dégagement 8 est cylindrique et a la même hauteur que le ressort 2 lequel est centré entre les portées 91, 92 qui sont planes et perpendiculaires à l'axe de pivotement D.In a particular embodiment, as visible on the figure 3 , the surface of revolution 5 is constituted by a clearance 8 of height h included between two bearing surfaces 91, 92, belonging to flanges 47 and 48. These ranges 91 and 92 define the maximum radius of the bung 4 relative to the pivot axis D. Preferably, this clearance 8 is cylindrical and at the same height as the spring 2 which is centered between the bearing surfaces 91, 92 which are flat and perpendicular to the pivot axis D.

Avantageusement, le dégagement 8 a une profondeur P correspondant à deux fois l'épaisseur du ressort 2.Advantageously, the clearance 8 has a depth P corresponding to twice the thickness of the spring 2.

Dans une autre variante illustrée par la figure 7, le dégagement 8 a une hauteur h inférieure à celle du ressort 2 lequel est centré en appui oblique entre des portées 91, 92, d'une collerette supérieure 47 et d'une collerette inférieure 48. Ces portées 91 et 92 comportent des faces obliques, inclinées d'un angle α, tournées l'une vers l'autre de façon à définir un vé d'appui pour des surfaces de chant 27 et 28 que comporte le ressort 2.In another variant illustrated by the figure 7 , the clearance 8 has a height h less than that of the spring 2 which is centered obliquely between the bearing surfaces 91, 92, an upper flange 47 and a lower flange 48. These bearing surfaces 91 and 92 comprise oblique faces , inclined at an angle α, facing each other so as to define a support v for the edge surfaces 27 and 28 that the spring 2 comprises.

La figure 1B illustre une réalisation dans laquelle le tambour comporte un épaulement 3A tourné vers le ressort 2, et peut venir en appui par une surface d'appui 3B sur une surface d'appui 4B que comporte la bonde 4, et où le couvercle 7 comporte un épaulement 7A tourné vers le ressort 2, et peut venir en appui par une surface d'appui 7B sur une surface d'appui 4C que comporte la bonde 4.The Figure 1B illustrates an embodiment in which the drum comprises a shoulder 3A facing the spring 2, and can abut by a bearing surface 3B on a bearing surface 4B that includes the bung 4, and wherein the lid 7 has a shoulder 7A turned towards the spring 2, and can come to bear by a bearing surface 7B on a bearing surface 4C that includes the bung 4.

Tel que visible notamment, mais de façon non limitative sur les variantes des figures 5A, 5B, 5C, 6A, 6B, 6C, l'ensemble barillet 1 comporte un ressort 2 qui est fixé à la bonde 4 par friction, l'extrémité du ressort 2 comporte alors de préférence un épaulement conçu pour maintenir en arc-boutement l'extrémité libre du ressort 2 lors de son enroulement..As visible in particular, but in a non-limiting way on the variants of the FIGS. 5A, 5B, 5C, 6A, 6B, 6C , the barrel assembly 1 comprises a spring 2 which is fixed to the bung 4 by friction, the end of the spring 2 then preferably comprises a shoulder designed to hold the free end of the spring 2 during its winding ..

Dans d'autres réalisations, le ressort 2 forme avec la bonde 4 un sous-ensemble ressort-bonde monobloc soudé ou brasé, ou similaire. Cette réalisation est particulièrement avantageuse, économique, et d'un montage très facile.In other embodiments, the spring 2 forms with the bung 4 a welded or brazed monoblock spring-binder subassembly, or the like. This embodiment is particularly advantageous, economical, and a very easy assembly.

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

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

Claims (15)

  1. Timepiece barrel assembly (1), including at least one barrel mainspring (2) mounted between, at a first end (21) a barrel drum (3), and at a second end (22), a receiving surface (5) comprised in a barrel core (4) coaxial to said drum (3) about a pivot axis (D), characterized in that said spring 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, and having a width to thickness ratio of between 9 and 21, and in that the maximum radius of said steel or stainless steel core (4) relative to said pivot axis (D) is less than nine times the maximum thickness of said spring (2), and further characterized in that said barrel assembly (1) includes, on said spring (2) or said drum (3), a means (6) of limiting the longitudinal clearance, in the direction of said pivot axis (D), between said drum (3) and said mainspring (2).
  2. Barrel assembly (1) according to claim 1, characterized in that said means (6) of limiting said longitudinal clearance between said drum (3) and said spring (2) is formed, either by at least one lug (24) on at least one of the edges (27, 28) of said spring (2), or by a peripheral recess (36) comprised in said drum (3) on the largest inner diameter thereof, said peripheral recess (36) being comprised between two oblique shoulders (33; 34) for the peripheral holding and support of said spring (2).
  3. Barrel assembly (1) according to claim 2, characterized in that said at least one lug (24) of said spring (2) is arranged for cooperating in abutment with an inner face (31) of said drum (3) and/or with an inner face (71) of a cover (7) delimiting, with said drum (3), a chamber (32) for housing said spring (2).
  4. Barrel assembly (1) according to claim 3, characterized in that said lug (24) comprises at least one height extended coil of said spring (2).
  5. Barrel assembly (1) according to claim 3 or 4, characterized in that said lug (24) includes at least one added flange (26), of greater height locally than that of said spring (2) and fixed to said spring.
  6. Barrel assembly (1) according to claim 2, characterized in that said means (6) of limiting said longitudinal clearance between said drum (3) and said spring (2) is formed by a peripheral recess (36) comprised in said drum (3) on the largest inner diameter thereof, said peripheral recess (36) being comprised between two shoulders (33, 34) for the peripheral holding and support of said spring (2).
  7. Barrel assembly (1) according to claim 6, characterized in that said peripheral recess (36) is cylindrical and has the same height as said spring (2) which is centred between said shoulders (33; 34) which are plane and perpendicular to said pivot axis (D).
  8. Barrel assembly (1) according to claim 6, characterized in that said peripheral recess (36) has a lower height than that of said spring (2), which is centred, supported obliquely between shoulders (33, 34), which include oblique faces facing each other so as to define a V-shaped support for edge surfaces (27; 28) comprised in said spring (2).
  9. Barrel assembly (1) according to any of the preceding claims, characterized in that said spring (2) is elastically held with no hook around said receiving surface (5) which is a surface of revolution relative to said pivot axis (D).
  10. Barrel assembly (1) according to claim 9, characterized in that said first surface of revolution (5) is formed by a recess (8) comprised between two shoulders (91, 92) which define said maximum radius of said core (4) relative to said pivot axis (D).
  11. Barrel assembly (1) according to claim 10, characterized in that said recess (8) has a lower height than that of said spring (2), which is centred, supported obliquely between said shoulders (91, 92), which include oblique faces facing each other and defining a V-shaped support for edge surfaces (27; 28) comprised in said spring (2).
  12. Barrel assembly (1) according to any of the preceding claims, characterized in that said spring (2) is fixed by friction to said core (4).
  13. Barrel assembly (1) according to any of claims 1 to 11, characterized in that said spring (2) forms, with said core (4), a welded or soldered single-piece spring-core sub-assembly.
  14. Timepiece movement (100) including at least one barrel assembly (1) according to any of the preceding claims for storing energy with one input formed either by a ratchet (12) mounted for integral rotation with said core (4), or by a drum toothing (13) mounted for integral rotation with said drum (3), and an output respectively formed either by a drum toothing (13) mounted for integral rotation with said drum (3), or by a ratchet (12) mounted for integral rotation with said core (4).
  15. Timepiece movement (1000) including at least one timepiece movement (100) according to claim 14 and/or at least one barrel assembly (1) according to any of claims 1 to 13 for storing energy with one input formed either by a ratchet (12), mounted for integral rotation with said core (4), or by a drum toothing (13) mounted for integral rotation with said drum (3), and an output respectively formed either by a drum toothing (13) mounted for integral rotation with said drum (3), or by a ratchet (12) mounted for integral rotation with said core (4).
EP12759423.2A 2011-09-15 2012-09-13 Timepiece barrel assembly having a small core diameter Active EP2756360B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12759423.2A EP2756360B1 (en) 2011-09-15 2012-09-13 Timepiece barrel assembly having a small core diameter

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11181352.3A EP2570862B1 (en) 2011-09-15 2011-09-15 Clock barrel assembly with reduced core diameter
PCT/EP2012/067913 WO2013037870A1 (en) 2011-09-15 2012-09-13 Timepiece barrel assembly having a small core diameter
EP12759423.2A EP2756360B1 (en) 2011-09-15 2012-09-13 Timepiece barrel assembly having a small core diameter

Publications (2)

Publication Number Publication Date
EP2756360A1 EP2756360A1 (en) 2014-07-23
EP2756360B1 true EP2756360B1 (en) 2015-05-27

Family

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EP11181352.3A Active EP2570862B1 (en) 2011-09-15 2011-09-15 Clock barrel assembly with reduced core diameter
EP12759423.2A Active EP2756360B1 (en) 2011-09-15 2012-09-13 Timepiece barrel assembly having a small core diameter

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EP11181352.3A Active EP2570862B1 (en) 2011-09-15 2011-09-15 Clock barrel assembly with reduced core diameter

Country Status (8)

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US (1) US9033573B2 (en)
EP (2) EP2570862B1 (en)
JP (1) JP5702509B2 (en)
CN (1) CN103797425B (en)
HK (1) HK1197840A1 (en)
IN (1) IN2014CN02738A (en)
RU (1) RU2559125C1 (en)
WO (1) WO2013037870A1 (en)

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* Cited by examiner, † Cited by third party
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EP2570861A1 (en) * 2011-09-15 2013-03-20 ETA SA Manufacture Horlogère Suisse Clock barrel assembly with reduced core diameter
EP2605087B1 (en) * 2011-12-13 2017-07-26 ETA SA Manufacture Horlogère Suisse Modular clock assembly with functional modules
US9448533B2 (en) * 2012-04-04 2016-09-20 Rolex Sa Barrel shaft for a clock movement, barrel spring and barrel including such a spring and/or such a shaft
EP2963504A1 (en) * 2014-06-30 2016-01-06 Rolex Sa Barrel for timepiece
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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
EP3499316A1 (en) * 2017-12-15 2019-06-19 Nivarox-FAR S.A. Barrel spring for a clock movement of a timepiece and method for manufacturing such a spring
EP3872576B1 (en) * 2020-02-25 2024-02-21 ETA SA Manufacture Horlogère Suisse Timepiece barrel with twisted arbor

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Also Published As

Publication number Publication date
JP2014526691A (en) 2014-10-06
EP2570862B1 (en) 2014-03-05
WO2013037870A1 (en) 2013-03-21
US9033573B2 (en) 2015-05-19
IN2014CN02738A (en) 2015-07-03
US20140211596A1 (en) 2014-07-31
CN103797425B (en) 2016-08-17
EP2756360A1 (en) 2014-07-23
JP5702509B2 (en) 2015-04-15
RU2559125C1 (en) 2015-08-10
HK1197840A1 (en) 2015-02-18
EP2570862A1 (en) 2013-03-20
CN103797425A (en) 2014-05-14

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