EP1612627A1 - Bi-material autocompensating hairspring - Google Patents

Bi-material autocompensating hairspring Download PDF

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Publication number
EP1612627A1
EP1612627A1 EP04015580A EP04015580A EP1612627A1 EP 1612627 A1 EP1612627 A1 EP 1612627A1 EP 04015580 A EP04015580 A EP 04015580A EP 04015580 A EP04015580 A EP 04015580A EP 1612627 A1 EP1612627 A1 EP 1612627A1
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EP
European Patent Office
Prior art keywords
curve
hairspring
spiral
assembly
contour
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Granted
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EP04015580A
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German (de)
French (fr)
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EP1612627B1 (en
Inventor
Marco Verardo
Thierry Conus
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Nivarox Far SA
Nivarox SA
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Nivarox Far SA
Nivarox SA
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Priority to AT04015580T priority Critical patent/ATE430953T1/en
Priority to EP04015580A priority patent/EP1612627B1/en
Priority to DE602004020982T priority patent/DE602004020982D1/en
Priority to TW094121675A priority patent/TWI382285B/en
Priority to KR1020050056399A priority patent/KR20060048633A/en
Priority to CN200510080763.2A priority patent/CN1728017B/en
Priority to US11/169,911 priority patent/US7229208B2/en
Priority to RU2005120604/28A priority patent/RU2363971C2/en
Priority to JP2005194992A priority patent/JP4852267B2/en
Publication of EP1612627A1 publication Critical patent/EP1612627A1/en
Priority to HK06102729.8A priority patent/HK1082972A1/en
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Publication of EP1612627B1 publication Critical patent/EP1612627B1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • G04B17/066—Manufacture of the spiral spring
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency

Definitions

  • the present invention relates to a hairspring, intended in particular to be integrated in the balance-sprung adjusting device of a timepiece, whose curve inside is modified to allow a concentric expansion of the turns and thus improve the isochronism of said timepiece.
  • the invention relates more particularly to both the conformation of the curve inside and the choice of materials to make the curve inside and all the turns.
  • point of attachment the so-called "point of attachment" rule to form the curve inside a spiral according to a particular contour, and in particular according to the Grossmann curve.
  • all turns have previously been formed by the known technique of strapping, it is necessary to use a highly skilled labor, so that this solution is reserved for high-precision timepieces, high-end and for limited series, but is in no case applicable to mass production.
  • the present invention therefore aims to provide a new solution by providing a hairspring that can be manufactured industrially while having the qualities of a Grossmann inner curve hairspring whose influence on a concentric expansion of the hairspring is greater than that resulting from the conformation of the curve on the outside.
  • the subject of the invention is a self-compensating hairspring for a balance-spring balance device, said hairspring being constituted by a first assembly, comprising the turns and the curve on the outside, made of a first material having a torque resilient little or not sensitive to variations in elongation, temperature and magnetic field, and by a second assembly integral with the first assembly, including in particular the curve inside, made of a second material chosen mainly for its mechanical properties facilitating the conformation of said curve inside according to the contour most favorable to a concentric expansion of the spiral.
  • This contour may for example be a Grossmann curve.
  • the known methods can be used, but the LIGA method of photolithography and galvanic growth is preferably used.
  • the accuracy of the conformation of the curve inside is thus reported in relation to the production of the irradiation mask, which is perfectly well achieved with current techniques.
  • the mask can easily be duplicated or reused for mass production.
  • the first and second sets can be assembled by welding, for example by laser welding.
  • Figure 1 there is shown a sprung balance adjusting device in top view partially broken away, limited to parts useful for understanding the invention, Figure 2 being an enlarged representation of the center of the device.
  • the regulating device comprises a rocker 10, whose axis 11 is pivoted in a cock 12 and a spiral 1.
  • the curve on the outside 2 of the spiral 1 is fixed in a known manner by fitting in a peak 15 of a holder. 13, and it is extended by a group of turns 3 to the beginning of the curve inside 4 to form a first set.
  • the second set comprises in the example shown the curve inside 4 welded at a point 7 on a shell 5.
  • the curve inside 4 which is represented as a curve Grossmann 14 conferring spiral 1 a concentric expansion, is welded to a point 9 at the end of the turns of the first set.
  • the material used may be any alloy known for its non-magnetic properties and for its low coefficient of thermal expansion, for example Elinvar, this first set being able to be shaped for example by strapping.
  • the material used will preferably be chosen for its mechanical properties and for its ease of forming. Even if the material used does not have all the desired properties to conform the whole spiral, given the short length of the curve inside, we can consider as negligible the impact of its defects on the overall performance spiral, these defects can in any case be corrected.
  • This second set may comprise only the curve inside which will then be welded at its end 7 to the shell 5 and at its end 9 at the ends of the turns of the first set.
  • a positive or negative photoresist with a thickness corresponding to the height "h" of desired blade, then is formed by means of a mask by photolithography and etching a hollow structure corresponding to the desired contour for the second set.
  • said hollow structure is filled with a metal or an alloy such as NiP, either by electrodeposition as indicated, for example, in US Pat. No. 4,661,212, or by compression and sintering of nanoparticles, as indicated by example in the patent application US 2001/0038803.
  • the second set is released by elimination of the sacrificial layer.
  • FIG. 3 the isochronism diagram of a bi-material self-compensating hairspring having the above-indicated characteristics is shown.
  • the amplitude of oscillation of the balance expressed in degrees relative to its equilibrium position has been plotted on the abscissa, and the ordinance deviation expressed in seconds per day.
  • This diagram has five curves corresponding to the usual measurement positions (1: horizontal, 2 to 5: the four vertical positions), and the dotted line corresponds to the envelope of all the most unfavorable positions.
  • the maximum deviation of the envelope for an amplitude of between 200 ° and 300 ° is used as the operating gap.
  • the maximum deviation corresponds to an amplitude of 300 ° and has a value of 2.1 s / d, which is about three times less than the difference that can be observed with an unmodified spiral of reference, ie monomaterial and without Grossmann curve.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Springs (AREA)
  • Micromachines (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Silicon Polymers (AREA)
  • Braking Arrangements (AREA)
  • Glass Compositions (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Materials For Medical Uses (AREA)
  • Hair Curling (AREA)

Abstract

The hairspring has one assembly integrated with another assembly that comprises an inner curve (4). The curve is made of a material that is chosen for its mechanical properties and for facilitating the shapeability of the curve according to the most favorable contour for a concentric expansion of the hairspring. The curve has a contour of Grossman curve (14). The former assembly is made by utilizing a LIGA process. An independent claim is also included for a method for manufacturing an assembly of a hairspring.

Description

DOMAINE TECHNIQUETECHNICAL AREA

La présente invention a pour objet un spiral, destiné en particulier à être intégré dans le dispositif réglant balancier-spiral d'une pièce d'horlogerie, dont la courbe à l'intérieur est modifiée pour permettre une expansion concentrique des spires et améliorer ainsi l'isochronisme de ladite pièce d'horlogerie.The present invention relates to a hairspring, intended in particular to be integrated in the balance-sprung adjusting device of a timepiece, whose curve inside is modified to allow a concentric expansion of the turns and thus improve the isochronism of said timepiece.

ARRIERE PLAN TECHNOLOGIQUEBACKGROUND TECHNOLOGY

Pour qu'une pièce d'horlogerie ait le meilleur isochronisme possible il est nécessaire d'agir sur les paramètres de construction du balancier et du spiral, ainsi que sur le choix des matériaux afin d'améliorer les performances intrinsèques du dispositif réglant et de compenser ou réduire les écarts de marche dus à des variations des conditions extérieures, telles que la température ou le champ magnétique.For a timepiece to have the best possible isochronism it is necessary to act on the construction parameters of the balance and the hairspring, as well as on the choice of materials to improve the intrinsic performance of the device regulating and compensating or reduce offsets due to changes in external conditions, such as temperature or magnetic field.

En ce qui concerne le spiral, la conformation de la courbe à l'extérieur pour la fixation directe ou indirecte au coq, la conformation de la courbe à l'intérieur pour la fixation à l'axe de balancier pour permettre un développement concentrique des spires, ainsi que le choix des matériaux jouent un rôle déterminant au niveau de l'isochronisme.Regarding the hairspring, the conformation of the curve to the outside for direct or indirect attachment to the rooster, the conformation of the curve inside for attachment to the balance shaft to allow a concentric development of the turns , as well as the choice of materials play a determining role at the level of isochronism.

L'invention concerne plus particulièrement à la fois la conformation de la courbe à l'intérieur et le choix des matériaux pour réaliser la courbe à l'intérieur ainsi que l'ensemble des spires. Pour atteindre ce but il est bien connu de choisir un alliage amagnétique à faible coefficient de dilation et d'appliquer la règle dite "du point d'attache" pour conformer la courbe à l'intérieur d'un spiral selon un contour particulier, et notamment selon la courbe du Grossmann. Pour réaliser une telle courbe à l'extrémité intérieure d'un spiral, dont toutes les spires auront préalablement été formées par la technique connue d'estrapadage, il est nécessaire de faire appel à une main-d'oeuvre hautement qualifiée, de sorte que cette solution est réservée aux pièces d'horlogerie de haute précision, de haut de gamme et pour des séries limitées, mais n'est en aucun cas applicable à des fabrications en série. Compte-tenu de l'évolution des technologies, pour donner au spiral la forme optimum, on pourrait envisager de réaliser tout le spiral par photolithographie et croissance galvanique. Toutefois, en l'état actuel, il n'existe pas un métal ou un alliage qui soit satisfaisant à la fois pour sa facilité de conformation par galvanoplastie et pour ses propriétés d'élasticité et de coefficient thermique.The invention relates more particularly to both the conformation of the curve inside and the choice of materials to make the curve inside and all the turns. To achieve this goal, it is well known to choose a non-magnetic alloy with a low coefficient of expansion and to apply the so-called "point of attachment" rule to form the curve inside a spiral according to a particular contour, and in particular according to the Grossmann curve. To achieve such a curve at the inner end of a spiral, all turns have previously been formed by the known technique of strapping, it is necessary to use a highly skilled labor, so that this solution is reserved for high-precision timepieces, high-end and for limited series, but is in no case applicable to mass production. Given the evolution of technologies, to give the spiral the optimum shape, we could consider making the entire spiral by photolithography and galvanic growth. However, in the current state, there is no metal or alloy that is satisfactory both for its ease of conformation by electroplating and for its elastic properties and thermal coefficient.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

La présente invention vise donc à apporter une solution nouvelle en procurant un spiral pouvant être fabriqué de façon industrielle tout en ayant les qualités d'un spiral à courbe intérieure Grossmann dont l'influence sur une expansion concentrique du spiral est plus grande que celle résultant de la conformation de la courbe à l'extérieur.The present invention therefore aims to provide a new solution by providing a hairspring that can be manufactured industrially while having the qualities of a Grossmann inner curve hairspring whose influence on a concentric expansion of the hairspring is greater than that resulting from the conformation of the curve on the outside.

A cet effet l'invention a pour objet un spiral auto-compensateur pour un dispositif réglant balancier-spiral, ledit spiral étant constitué par un premier ensemble, comprenant les spires et la courbe à l'extérieur, réalisé en un premier matériau ayant un couple élastique peu ou pas sensible aux variations d'élongation, de température et de champ magnétique, et par un deuxième ensemble solidaire du premier ensemble, comprenant notamment la courbe à l'intérieur, réalisé en un deuxième matériau choisi essentiellement pour ses propriétés mécaniques facilitant la conformation de ladite courbe à l'intérieur selon le contour le plus favorable à une expansion concentrique du spiral. Ce contour peut par exemple être une courbe Grossmann.To this end, the subject of the invention is a self-compensating hairspring for a balance-spring balance device, said hairspring being constituted by a first assembly, comprising the turns and the curve on the outside, made of a first material having a torque resilient little or not sensitive to variations in elongation, temperature and magnetic field, and by a second assembly integral with the first assembly, including in particular the curve inside, made of a second material chosen mainly for its mechanical properties facilitating the conformation of said curve inside according to the contour most favorable to a concentric expansion of the spiral. This contour may for example be a Grossmann curve.

Pour fabriquer le deuxième ensemble, on peut utiliser les procédés connus, mais on utilise de préférence le procédé LIGA de photolithographie et croissance galvanique. On reporte ainsi la précision de la conformation de la courbe à l'intérieur sur la réalisation du masque d'irradiation, ce qu'on sait parfaitement réaliser avec les techniques actuelle. Le masque peut facilement être dupliqué ou réutilisé pour une fabrication en série.To manufacture the second set, the known methods can be used, but the LIGA method of photolithography and galvanic growth is preferably used. The accuracy of the conformation of the curve inside is thus reported in relation to the production of the irradiation mask, which is perfectly well achieved with current techniques. The mask can easily be duplicated or reused for mass production.

En faisant appel au procédé LIGA pour réaliser le deuxième ensemble, on peut très facilement prévoir un masque permettant de former en même temps la virole pour la fixation de la courbe à l'intérieur sur l'axe de balancier. Lorsque les premier et deuxième matériaux sont des métaux ou des alliages, les premier et deuxième ensemble peuvent être assemblés par soudage, par exemple par soudage laser.By using the LIGA process to make the second set, it is very easy to provide a mask for forming at the same time the ferrule for fixing the curve inside on the balance shaft. When the first and second materials are metals or alloys, the first and second sets can be assembled by welding, for example by laser welding.

BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

D'autres caractéristiques et avantages de la présente invention apparaîtront dans la description qui suit, donnée à titre illustratif et non limitatif, en référence aux dessins annexés dans lesquels :

  • la figure 1 représente en vue de dessus partiellement arrachée un balancier spiral pourvu d'un spiral selon l'invention;
  • la figure 2 représente une vue agrandie de la courbe à l'intérieur selon la flèche II de la figure 1, et
  • la figure 3 correspond à un diagramme d'isochronisme obtenu avec un spiral selon l'invention.
Other characteristics and advantages of the present invention will appear in the description which follows, given by way of illustration and without limitation, with reference to the appended drawings in which:
  • Figure 1 shows a partially cutaway top view of a spiral balance provided with a spiral according to the invention;
  • FIG. 2 represents an enlarged view of the curve inside along arrow II of FIG. 1, and
  • Figure 3 corresponds to an isochronism diagram obtained with a spiral according to the invention.

DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

A la figure 1 on a représenté un dispositif réglant balancier-spiral en vue de dessus partiellement arrachée, en se limitant aux parties utiles à la compréhension de l'invention, la figure 2 étant une représentation agrandie du centre du dispositif.In Figure 1 there is shown a sprung balance adjusting device in top view partially broken away, limited to parts useful for understanding the invention, Figure 2 being an enlarged representation of the center of the device.

Le dispositif réglant comprend un balancier 10, dont l'axe 11 est pivoté dans un coq 12 et un spiral 1. La courbe à l'extérieur 2 du spiral 1 est fixée de façon connue par encastrement dans un piton 15 d'un porte-piton 13, et elle est prolongée par un groupe de spire 3 jusqu'au début de la courbe à l'intérieur 4 pour former un premier ensemble.The regulating device comprises a rocker 10, whose axis 11 is pivoted in a cock 12 and a spiral 1. The curve on the outside 2 of the spiral 1 is fixed in a known manner by fitting in a peak 15 of a holder. 13, and it is extended by a group of turns 3 to the beginning of the curve inside 4 to form a first set.

Le deuxième ensemble, plus visible sur la figure agrandie 2, comprend dans l'exemple représenté la courbe à l'intérieur 4 soudée en un point 7 sur une virole 5. La courbe à l'intérieur 4, qui est représentée comme étant une courbe Grossmann 14 conférant au spiral 1 une expansion concentrique, est soudée en un point 9 à l'extrémité des spires du premier ensemble.The second set, more visible in the enlarged figure 2, comprises in the example shown the curve inside 4 welded at a point 7 on a shell 5. The curve inside 4, which is represented as a curve Grossmann 14 conferring spiral 1 a concentric expansion, is welded to a point 9 at the end of the turns of the first set.

Ainsi, en séparant "physiquement" le premier ensemble et le deuxième ensemble, il est possible de choisir des matériaux différents et des méthodes de fabrication différentes, en fonction de la propriété dominante souhaitée.Thus, by "physically" separating the first set and the second set, it is possible to choose different materials and different manufacturing methods, depending on the desired dominant property.

Pour le premier ensemble, le matériau utilisé peut-être un quelconque alliage connu pour ses propriétés amagnétiques et pour son faible coefficient de dilatation thermique, par exemple de l'Elinvar, ce premier ensemble pouvant être conformé par exemple par estrapadage.For the first set, the material used may be any alloy known for its non-magnetic properties and for its low coefficient of thermal expansion, for example Elinvar, this first set being able to be shaped for example by strapping.

En ce qui concerne le deuxième ensemble, qui sera de préférence conformé par le procédé LIGA, le matériau utilisé sera de préférence choisi pour ses propriétés mécaniques et pour sa facilité de mise en forme. Même si le matériau utilisé n'a pas toutes les propriétés souhaitées pour conformer la totalité du spiral, compte-tenu de la faible longueur de la courbe à l'intérieur, on peut considérer comme négligeable l'impact de ses défauts sur la performance globale du spiral, ces défaut pouvant dans tous les cas être corrigés.As regards the second set, which will preferably be shaped by the LIGA process, the material used will preferably be chosen for its mechanical properties and for its ease of forming. Even if the material used does not have all the desired properties to conform the whole spiral, given the short length of the curve inside, we can consider as negligible the impact of its defects on the overall performance spiral, these defects can in any case be corrected.

Ce deuxième ensemble peut comporter uniquement la courbe à l'intérieur qui sera alors soudé à son extrémité 7 à la virole 5 et à son extrémité 9 à l'extrémité des spires du premier ensemble. Lorsqu'on utilise le procédé LIGA, il est possible de façon avantageuse de conformer en même temps la courbe à l'intérieur 14 et la virole 5 en donnant à celle-ci la forme classique en étoile à quatre branches, ou toute autre forme appropriée.This second set may comprise only the curve inside which will then be welded at its end 7 to the shell 5 and at its end 9 at the ends of the turns of the first set. When using the LIGA process, it is advantageously possible to simultaneously form the curve inside 14 and the shell 5 by giving it the conventional four-pointed star shape, or any other suitable form. .

Pour réaliser le deuxième ensemble par le procédé LIGA, dans une première étape on étale sur un substrat préalablement revêtu d'une couche sacrificielle un photorésist positif ou négatif avec une épaisseur correspondant à la hauteur "h" de lame désirée, puis on forme au moyen d'un masque par photolithographie et attaque chimique une structure en creux correspondant au contour désiré pour le deuxième ensemble. Dans une deuxième étape, on remplit ladite structure en creux d'un métal ou d'un alliage tel que NiP, soit par électrodéposition comme indiqué par exemple dans le brevet US 4 661 212, soit par compression et frittage de nanoparticules, comme indiqué par exemple dans la demande du brevet US 2001/0038803. Dans une dernière étape on libère le deuxième ensemble par élimination de la couche sacrificielle.To achieve the second set by the LIGA method, in a first step is spread on a substrate previously coated with a sacrificial layer a positive or negative photoresist with a thickness corresponding to the height "h" of desired blade, then is formed by means of a mask by photolithography and etching a hollow structure corresponding to the desired contour for the second set. In a second step, said hollow structure is filled with a metal or an alloy such as NiP, either by electrodeposition as indicated, for example, in US Pat. No. 4,661,212, or by compression and sintering of nanoparticles, as indicated by example in the patent application US 2001/0038803. In a last step, the second set is released by elimination of the sacrificial layer.

En se référant maintenant à la figure 3 on a représenté le diagramme d'isochronisme d'un spiral autocompensateur bi-matière ayant les caractéristiques sus-indiquées.Referring now to FIG. 3, the isochronism diagram of a bi-material self-compensating hairspring having the above-indicated characteristics is shown.

On a reporté en abscisses l'amplitude d'oscillation du balancier exprimée en degrés par rapport à sa position d'équilibre, et en ordonnées l'écart de marche exprimé en secondes par jour. Ce diagramme comporte cinq courbes correspondant aux positions usuelles de mesure (1 : horizontal; 2 à 5 : les quatre positions verticales), et le tracé en pointillés correspond à l'enveloppe de toutes les positions les plus défavorables. De façon usuelle, on retient comme écart de marche l'écart maximum de l'enveloppe pour une amplitude comprise entre 200° et 300°. Comme on peut le voir sur figure 3, l'écart maximum correspond à une amplitude de 300° et a pour valeur 2,1 s/j soit environ trois fois moins que l'écart qu'on peut observer avec un spiral non modifié de référence, c'est-à-dire monomatière et sans courbe Grossmann.The amplitude of oscillation of the balance expressed in degrees relative to its equilibrium position has been plotted on the abscissa, and the ordinance deviation expressed in seconds per day. This diagram has five curves corresponding to the usual measurement positions (1: horizontal, 2 to 5: the four vertical positions), and the dotted line corresponds to the envelope of all the most unfavorable positions. In the usual way, the maximum deviation of the envelope for an amplitude of between 200 ° and 300 ° is used as the operating gap. As can be seen in FIG. 3, the maximum deviation corresponds to an amplitude of 300 ° and has a value of 2.1 s / d, which is about three times less than the difference that can be observed with an unmodified spiral of reference, ie monomaterial and without Grossmann curve.

D'autres modifications au spiral autocompensateur bi-matière qui vient d'être décrit peuvent être apportées par l'homme de l'art sans sortir du cadre de la présente invention.Other modifications to the bi-material self-compensating hairspring which has just been described can be provided by those skilled in the art without departing from the scope of the present invention.

Claims (7)

Spiral auto-compensateur (1) pour un dispositif réglant balancier-spiral dont la courbe à l'extérieur (2) est fixée au coq (12) dans lequel pivote l'axe du balancier (11) sur lequel est fixée la courbe à l'intérieur (4) du spiral (1), caractérisé en ce que le spiral (1) est constitué par un premier ensemble, comprenant les spires (3) et la courbe à l'extérieur (2), réalisé en un premier matériau ayant un couple élastique peu ou pas sensible aux variations d'élongation, de température et de champ magnétique, et par un deuxième ensemble solidaire du premier ensemble, comprenant notamment la courbe à l'intérieur (4) réalisé en un deuxième matériau choisi essentiellement pour ses propriétés mécaniques facilitant la conformation de ladite courbe à l'intérieur (4) selon un contour le plus favorable à une expansion concentrique du spiral.Self-compensating spiral (1) for a balance-sprung adjusting device whose outside curve (2) is fixed to the cock (12) in which the axis of the balance (11) pivots on which the curve is fixed. interior (4) of the hairspring (1), characterized in that the hairspring (1) is constituted by a first assembly, comprising the turns (3) and the curve on the outside (2), made of a first material having an elastic torque that is little or not sensitive to variations in elongation, temperature and magnetic field, and by a second assembly integral with the first assembly, comprising in particular the curve inside (4) made of a second material chosen essentially for its mechanical properties facilitating the conformation of said curve inside (4) in a contour most favorable to a concentric expansion of the spiral. Spiral selon la revendication 1, caractérisé en ce que la courbe à l'intérieur (4) a le contour d'une courbe Grossmann (14).Spiral according to claim 1, characterized in that the curve inside (4) has the contour of a Grossmann curve (14). Spiral selon la revendication 1, caractérisé en ce que le deuxième ensemble comprend également une virole (5) permettant une fixation sur l'axe de balancier (11) et venant de matière avec la courbe à l'intérieur (4).Spiral according to claim 1, characterized in that the second assembly also comprises a ferrule (5) for attachment to the rocker shaft (11) and coming from material with the curve inside (4). Spiral selon la revendication 1, caractérisé en ce que le matériau du premier ensemble est un alliage de type Elinvar et le matériau du deuxième ensemble est, essentiellement pour ses propriétés mécaniques et sa facilité de conformation, tel qu'un alliage NiP.Spiral according to claim 1, characterized in that the material of the first set is an alloy of Elinvar type and the material of the second set is mainly for its mechanical properties and ease of conformation, such as a NiP alloy. Spiral selon la revendication 4, caractérisé en ce que le premier et le deuxième ensemble sont solidarisés par un point de soudage laser (9).Spiral according to claim 4, characterized in that the first and the second set are secured by a laser welding point (9). Procédé de fabrication du deuxième ensemble d'un spiral selon la revendication 1, caractérisé en ce qu'on forme par le procédé LIGA un moule correspondant au contour désiré pour le deuxième ensemble et qu'on apporte dans ledit moule le deuxième matériau par croissance galvanique d'un métal ou d'un alliage.Process for manufacturing the second set of a hairspring according to claim 1, characterized in that a mold corresponding to the desired contour for the second set is formed by the LIGA process and the second material is brought into said mold by galvanic growth. of a metal or an alloy. Procédé de fabrication du deuxième ensemble d'un spiral selon la revendication 3, caractérisé en ce qu'on forme par le procédé LIGA un moule correspondant au contour désiré pour le deuxième ensemble constitué par la courbe à l'intérieur (4) et par la virole (5) et qu'on apporte dans ledit moule le deuxième matériau par croissance galvanique.A method of manufacturing the second set of a hairspring according to claim 3, characterized in that a mold corresponding to the desired contour for the second set consisting of the curve inside (4) and the ferrule (5) and bringing into said mold the second material by galvanic growth.
EP04015580A 2004-07-02 2004-07-02 Bi-material autocompensating hairspring Expired - Lifetime EP1612627B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
AT04015580T ATE430953T1 (en) 2004-07-02 2004-07-02 HAIR SPRING MADE OF TWO MATERIALS WITH SELF-COMPENSATION
EP04015580A EP1612627B1 (en) 2004-07-02 2004-07-02 Bi-material autocompensating hairspring
DE602004020982T DE602004020982D1 (en) 2004-07-02 2004-07-02 tion
KR1020050056399A KR20060048633A (en) 2004-07-02 2005-06-28 Bi-material self-compensating balance-spring
TW094121675A TWI382285B (en) 2004-07-02 2005-06-28 Self-compensating balance-spring for a sprung-balance regulating device and method of manufacturing a self-compensating balance-spring for a sprung-balance regulating device
US11/169,911 US7229208B2 (en) 2004-07-02 2005-06-30 Bi-material self-compensating balance-spring
CN200510080763.2A CN1728017B (en) 2004-07-02 2005-06-30 Bi-material self-compensating balance-spring
RU2005120604/28A RU2363971C2 (en) 2004-07-02 2005-07-01 Self-compensating balance spring made of two materials
JP2005194992A JP4852267B2 (en) 2004-07-02 2005-07-04 Automatic compensation spring made of two materials
HK06102729.8A HK1082972A1 (en) 2004-07-02 2006-03-02 Bi-material self-compensating balance-spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04015580A EP1612627B1 (en) 2004-07-02 2004-07-02 Bi-material autocompensating hairspring

Publications (2)

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EP1612627A1 true EP1612627A1 (en) 2006-01-04
EP1612627B1 EP1612627B1 (en) 2009-05-06

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Application Number Title Priority Date Filing Date
EP04015580A Expired - Lifetime EP1612627B1 (en) 2004-07-02 2004-07-02 Bi-material autocompensating hairspring

Country Status (10)

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US (1) US7229208B2 (en)
EP (1) EP1612627B1 (en)
JP (1) JP4852267B2 (en)
KR (1) KR20060048633A (en)
CN (1) CN1728017B (en)
AT (1) ATE430953T1 (en)
DE (1) DE602004020982D1 (en)
HK (1) HK1082972A1 (en)
RU (1) RU2363971C2 (en)
TW (1) TWI382285B (en)

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EP2104008A1 (en) 2008-03-20 2009-09-23 Nivarox-FAR S.A. Single-body regulating organ and method for manufacturing same
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EP3181515A1 (en) * 2015-12-15 2017-06-21 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Composite timepiece and method for manufacturing same

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TW200613938A (en) 2006-05-01
US20060002241A1 (en) 2006-01-05
JP4852267B2 (en) 2012-01-11
DE602004020982D1 (en) 2009-06-18
TWI382285B (en) 2013-01-11
JP2006017734A (en) 2006-01-19
KR20060048633A (en) 2006-05-18
CN1728017A (en) 2006-02-01
EP1612627B1 (en) 2009-05-06
CN1728017B (en) 2010-06-16
RU2005120604A (en) 2007-01-10
ATE430953T1 (en) 2009-05-15
HK1082972A1 (en) 2006-06-23
RU2363971C2 (en) 2009-08-10
US7229208B2 (en) 2007-06-12

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