EP3309625A1 - Hairspring intended for being attached by a spring washer - Google Patents

Hairspring intended for being attached by a spring washer Download PDF

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Publication number
EP3309625A1
EP3309625A1 EP16193768.5A EP16193768A EP3309625A1 EP 3309625 A1 EP3309625 A1 EP 3309625A1 EP 16193768 A EP16193768 A EP 16193768A EP 3309625 A1 EP3309625 A1 EP 3309625A1
Authority
EP
European Patent Office
Prior art keywords
spiral
zones
zone
ferrule
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16193768.5A
Other languages
German (de)
French (fr)
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EP3309625B1 (en
Inventor
Ivan Hernandez
Pierre Cusin
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.)
Nivarox Far SA
Nivarox SA
Original Assignee
Nivarox Far SA
Nivarox SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nivarox Far SA, Nivarox SA filed Critical Nivarox Far SA
Priority to EP16193768.5A priority Critical patent/EP3309625B1/en
Priority to RU2017134919A priority patent/RU2760638C2/en
Priority to US15/725,392 priority patent/US10444707B2/en
Priority to JP2017195774A priority patent/JP6606535B2/en
Priority to CN201710952282.9A priority patent/CN107942639B/en
Publication of EP3309625A1 publication Critical patent/EP3309625A1/en
Priority to HK18113081.3A priority patent/HK1253932A1/en
Application granted granted Critical
Publication of EP3309625B1 publication Critical patent/EP3309625B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/34—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring onto the balance
    • G04B17/345—Details of the spiral roll
    • 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
    • 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
    • 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
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton

Definitions

  • the invention relates to a spiral for being fixed elastically by a washer. More specifically, the invention relates to a ferrule adapted for fixing a hairspring on a shaft by means of the elastic nip of a washer.
  • the object of the present invention is to overcome all or part of the disadvantages mentioned above by proposing a ferrule retaining the advantages of the application. EP 2,916,177 while generating less contact and bending stresses in the band and, in particular, at the contact points and vertices of said polygon.
  • the invention relates to a spiral comprising a spiral spring formed of a blade wound on itself in a plurality of turns and a ferrule comprising a band extending substantially in the form of a triangle, the a strip comprising, at each of the vertices of said triangle, a bulge extending radially towards the inner coil of the spiral spring, the point of attachment between the spiral spring and the ferrule being situated on one of the bulges of said triangle which is symmetrical by relative to the shaft passing through the center of the ferrule and said attachment point characterized in that the band, between each of the vertices of said triangle, is formed of first and second zones with substantially constant widths and a third zone, between the first and second zones, which comprises a thickened width relative to those of the first and second zones and which is arranged to fit on a shaft for moving the elastic deformation forces at the level of the first and second two zones.
  • the invention relates to a resonator for a timepiece characterized in that it comprises a shaft on which is fitted a balance and a hairspring according to one of the preceding variants.
  • the invention relates to a spiral for being fixed elastically by a washer. More specifically, the invention relates to a ferrule adapted for fixing a hairspring on a shaft by means of the elastic nip of a washer.
  • This assembly system is described in the applications EP 2 860 591 and EP 2 860 592 in the name of the Applicant incorporated by reference in the present description.
  • This assembly system offers a great deal of freedom in the materials used. It is thus notably applicable for a part whose material does not comprise a usable plastic field, that is to say with a very small plastic area, with a member comprising another type of material.
  • the resonator 101 for a timepiece comprises a shaft 103 on which is fitted a rocker 105 and a hairspring 107 which may advantageously be a hairspring 1, 21, 41 described in the present application.
  • the shell of the spiral 107 is resiliently fitted on the shaft 103 between a washer 109 and a bearing 111 of the shaft 103.
  • the washer 109 clamps, mainly at its peripheral portion, the shell of the spiral 107 by elastic nip.
  • the ferrule shown in Figure 9 of the application EP 2,916,177 comprises a strip 67, extending in the form of a triangle, adapted for this type of assembly described in the applications EP 2 860 591 and EP 2 860 592 .
  • the band 67, between each of the vertices of said triangle has a non-constant width. More precisely, the band 67, between each of the vertices of said triangle, goes from a maximum width to the level of the tightening points while decreasing as the apices approach on two of the arms and a third arm with a fourth bulge to position the center of gravity on the geometric center of the band.
  • the ferrule 65 of the application EP 2,916,177 is subject to wide variations of constraints along its band 67 for a tightening of 6 ⁇ m to the diameter.
  • the contact stresses at the points of contact with the shaft are between 300 and 450 MPa and bending stresses between 500 and 600 MPa at the vertices of the triangle whereas they are almost zero between said points. contact and said vertices. While these maximum values are not penalizing in absolute terms for most materials used in watchmaking, the ferrule is, however, subject to large variations in stress along its band. This is why the present application proposes to limit the variations in stress along the strip, and particularly at the points of contact.
  • the hairspring 1, 21, 41 thus comprises a spiral spring 3 comprising a blade wound on itself in a plurality of turns and a shell 5, 25, 45 comprising a strip 7, 27, 47 extending substantially in the form of a triangle.
  • the strip 7, 27, 47 comprises, at each of the vertices of said triangle, a bulge 2, 4, 8, 22, 24, 28, 42, 44, 48 extending radially towards the inner turn S I of the spiral spring 3
  • the point of attachment between the spiral spring 3 and the ferrule 5, 25, 45 is located on one of the bulges 2, 22, 42 of said triangle which is symmetrical with respect to the axis passing through the center C of the ferrule and said point of attachment, the center C being able to be defined as the center of the circle inscribed in the opening of the ferrule 5, 25, 45.
  • the strip 7, 27, 47, between each of the vertices of said triangle is formed of first and second zones Z 1x , Z 2x with a substantially constant width and a third zone Z 3x , Z 4x , Z 5x , between the first and second zones Z 1x , Z 2x , which has a width thickened with respect to those of the first and second zones Z 1x , Z 2x and which is arranged to fit on a shaft A to move the elastic deformation forces at the first and second zones Z 1x , Z 2x of the strip 7, 27, 47.
  • the first and second 1x zones Z, Z 2x with preferably lengths L 13, L 23, L 1x, L 2X, heights and widths W 13, W 23, W 1x, W 2x identical.
  • a length of the third zone Z 3x, 4x Z, Z 5x between 20% and 50% of the total length of the three zones Z 1x Z 2 x Z 3 x Z 4x, Z 5x , and a width of the third zone Z 3x , Z 4x , Z 5x representing between 140% and 300% of the width W 1x , W 2x of the first and second zones Z 1x , Z 2x makes it possible to maintain the above advantages.
  • the hairspring 41 comprises a collar 45 with a band 47 which comprises three thickened zones Z 51 , Z 52 , and Z 53 which each extend radially towards the center C of the shell 45. It can be observed that each third zone Z 51 , Z 52 , Z 53 provides a substantially flat surface for the point of contact P 1 , P 2 , P 3 with the shaft A.
  • the first and second zones Z 1x , Z 2x of each arm of the band 47 form straight prisms with rectangular section all identical to provide an identical elastic character between them.
  • a length of the third zone Z 51 , Z 52 , Z 53 substantially equal to 20% of the total length of the three zones Z 1x , Z 2 x, Z 5x
  • a width of the third zone Z 51 , Z 52 , Z 53 substantially equal to 143% of the width W 1x , W 2x of the first and second zones Z 1x , Z 2x are applied in the first embodiment of the figure 5 .
  • the third zone Z 51 , Z 52 , Z 53 decreases its width along a radius, that is to say progressively.
  • a fourth bulge 46 extending radially towards the inner turn is present at the third zone Z 52 of the arm opposite the bulge 42 so as to position the center of gravity of the ferrule 45 at the center C of the ferrule 45.
  • the hairspring 21 comprises a collar 25 with a band 27 which comprises three thickened third zones Z 41 , Z 42 , Z 43 which each extend radially towards the inner coil of the spiral spring. It can be observed that each third zone Z 41 , Z 42 , Z 43 offers, for the point of contact P 1 , P 2 , P 3 with the shaft A, a substantially flat surface extending from the first and second zones Z 1x , Z 2x adjacent.
  • the first and second zones Z 1x , Z 2x of each arm of the band 27 form straight prisms with rectangular section all identical to provide an identical elastic character between them.
  • a length of the third zone Z 41 , Z 42 , Z 43 substantially equal to 42% of the total length of the three zones Z 1x , Z 2 x, Z 4x , and a width of the third zone Z 41 , Z 42 , Z 43 substantially equal to 267% of the width W 1x , W 2x of the first and second zones Z 1x , Z 2x are applied in the second embodiment of the figure 4 .
  • the third zone Z 41 , Z 42 , Z 43 decreases its width along a radius, that is to say gradually.
  • a fourth bead 26 extending radially towards the inner coil is present as an extension of the third zone Z 42 of the opposite arm to bulge 22 in order to position the center of gravity of the ferrule 25 to the center C Moreover, it can be seen that, proportionally, the fourth bulge 26 of the second embodiment is larger than that 46 of the first embodiment.
  • the spiral 1 comprises a ferrule 5 with a band 7 which comprises three thickened third zones Z 31 , Z 32 , Z 33 which each extend radially towards the center C of the ferrule 5 and towards the inner coil S I of the spring 3.
  • the third embodiment can thus be considered as a mixture between the first and second embodiments.
  • every third zone Z 31, Z 32, Z 33 provides a substantially concave surface to the contact point P 1, P 2, P 3 with the shaft A.
  • the first and second zones Z 1x , Z 2x of each arm of the strip 7 form straight prisms with rectangular section all identical to provide an identical elastic character between them.
  • a length of the third zone Z 31 , Z 32 , Z 33 substantially equal to 38% of the total length of the three zones Z 1x , Z 2 x, Z 3x , and a width of the third zone Z 31 , Z 32 , Z 33 substantially equal to 167% of the width W 1x , W 2x of the first and second zones Z 1x , Z 2x are applied in the third embodiment of FIGS. figures 2 and 3 . More specifically, a 50% oversize is applied radially towards the center C of the shell 5 and 117% towards the inner turn S I of the spiral spring 3.
  • the third zone Z 31, Z 32, Z 33 decreases its width along two separate rays, that is in a progressive manner on the inner and outer faces of each arm.
  • a fourth bulge 6 extending radially towards the inner turn S I is present in extension of the third zone Z 32 of the arm opposite the bulge 2 in order to position the center of gravity of the ferrule 5 at center C of the ferrule 5.
  • ferrule 5, 25, 45 according to the invention can not be limited to a strip 7, 27, 47 in the form of a triangle.
  • the invention can be applied to another type of polygon.
  • the hairspring 1, 21, 41 can also be formed using several materials.
  • the base material such as for example based on silicon, could receive a total or partial coating consisting of a thermal compensation layer and / or a resistant and moisture-proof layer so to make the hairspring 1, 21, 41 less sensitive to climatic variations.
  • the hairspring 1, 21, 41 may also comprise an internal turn S I following a Grossmann type curve and a partially thickened outer turn.

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  • General Physics & Mathematics (AREA)
  • Springs (AREA)
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Abstract

Virole montée élastiquement sur un arbre dont la géométrie génère moins de contraintes internes notamment, au niveau des points de contact et des sommets de sa forme polygonale.Ferrule mounted elastically on a shaft whose geometry generates fewer internal stresses including, at the points of contact and vertices of its polygonal shape.

Description

Domaine de l'inventionField of the invention

L'invention se rapporte à un spiral destiné à être fixé élastiquement par une rondelle. Plus précisément, l'invention se rapporte à une virole adaptée à la fixation d'un spiral sur un arbre à l'aide du pincement élastique d'une rondelle.The invention relates to a spiral for being fixed elastically by a washer. More specifically, the invention relates to a ferrule adapted for fixing a hairspring on a shaft by means of the elastic nip of a washer.

Arrière-plan de l'inventionBackground of the invention

La demande EP 2 916 177 au nom du Demandeur divulgue une telle virole sans recours à un collage ou un soudage. Ladite virole permet avantageusement d'éviter le déplacement du point d'attache lors de sa réception sur l'arbre, de positionner le centre de gravité sur le centre géométrique de la bande mais également de limiter les bris de matière induits par le pincement de la rondelle sur la surface de la virole.Requirement EP 2,916,177 in the name of the Applicant discloses such a shell without recourse to a bonding or welding. Said ferrule advantageously makes it possible to avoid the displacement of the attachment point when it is received on the shaft, to position the center of gravity on the geometric center of the strip, but also to limit the breaking of material induced by the pinching of the washer on the surface of the ferrule.

Toutefois, il est apparu en appliquant le critère de Von Mises que la virole est soumise à de grandes variations de contraintes le long de sa bande sous forme de polygone. En effet, des contraintes de contact élevées sont générées au niveau des points de contact avec l'arbre, accompagnées de contraintes de flexion au niveau des sommets dudit polygone.However, it appeared by applying the Von Mises criterion that the ferrule is subjected to large stress variations along its polygonal band. Indeed, high contact stresses are generated at the points of contact with the shaft, accompanied by bending stresses at the vertices of said polygon.

Résumé de l'inventionSummary of the invention

Le but de la présente invention est de pallier tout ou partie les inconvénients cités précédemment en proposant une virole gardant les avantages de la demande EP 2 916 177 tout en générant moins de contraintes de contact et de flexion dans la bande et, notamment, au niveau des points de contact et des sommets dudit polygone.The object of the present invention is to overcome all or part of the disadvantages mentioned above by proposing a ferrule retaining the advantages of the application. EP 2,916,177 while generating less contact and bending stresses in the band and, in particular, at the contact points and vertices of said polygon.

A cet effet, l'invention se rapporte à un spiral comportant un ressort-spiral formé d'une lame enroulée sur elle-même selon plusieurs spires et d'une virole comprenant une bande s'étendant sensiblement sous forme d'un triangle, la bande comportant, à chacun des sommets dudit triangle, un renflement s'étendant radialement vers la spire interne du ressort-spiral, le point d'attache entre le ressort-spiral et la virole étant situé sur un des renflements dudit triangle qui est symétrique par rapport à l'arbre passant par le centre de la virole et ledit point d'attache caractérisé en ce que la bande, entre chacun des sommets dudit triangle, est formée de première et deuxième zones à largeurs sensiblement constantes et d'une troisième zone, entre les première et deuxième zones, qui comprend une largeur épaissie par rapport à celles des première et deuxième zones et qui est agencée pour s'ajuster sur un arbre permettant de déplacer les efforts de déformation élastiques au niveau des première et deuxième deux zones.For this purpose, the invention relates to a spiral comprising a spiral spring formed of a blade wound on itself in a plurality of turns and a ferrule comprising a band extending substantially in the form of a triangle, the a strip comprising, at each of the vertices of said triangle, a bulge extending radially towards the inner coil of the spiral spring, the point of attachment between the spiral spring and the ferrule being situated on one of the bulges of said triangle which is symmetrical by relative to the shaft passing through the center of the ferrule and said attachment point characterized in that the band, between each of the vertices of said triangle, is formed of first and second zones with substantially constant widths and a third zone, between the first and second zones, which comprises a thickened width relative to those of the first and second zones and which is arranged to fit on a shaft for moving the elastic deformation forces at the level of the first and second two zones.

De manière surprenante, en déplaçant les zones d'élasticité entre les points de contact de l'arbre et les sommets dudit polygone de la virole, les contraintes de contact ont pu être diminuées de 70% et, les contraintes de flexion, de 40% par rapport à celles de la virole de la figure 9 de la demande EP 2 916 177 . On comprend ainsi que les contraintes internes sont bien moins élevées au sein de la virole. De plus, lors de l'adaptation, il a été possible de mieux équilibrer les contraintes de contact tout en maintenant un couple de tenue minimal de serrage sur l'arbre.Surprisingly, by moving the zones of elasticity between the points of contact of the shaft and the tops of said polygon of the ferrule, the contact stresses could be reduced by 70% and the bending stresses by 40% compared to those of the ferrule of Figure 9 of the application EP 2,916,177 . It is thus understood that the internal stresses are much lower within the ferrule. Moreover, during the adaptation, it was possible to better balance the contact stresses while maintaining a minimum holding torque on the shaft.

Conformément à d'autres variantes avantageuses de l'invention :

  • les première et deuxième zones comportent des largeurs identiques ;
  • la longueur de la troisième zone représente entre 20% et 50% de la longueur totale des trois zones ;
  • la largeur de la troisième zone représente entre 140% et 300% de la largeur des première et deuxième zones ;
  • la troisième zone est épaissie en s'étendant radialement vers le centre de la virole ;
  • la troisième zone est épaissie en s'étendant radialement vers la spire interne du ressort-spiral ;
  • la troisième zone est épaissie en s'étendant radialement vers le centre de la virole et vers la spire interne du ressort-spiral ;
  • le spiral est formé à base de silicium.
According to other advantageous variants of the invention:
  • the first and second zones have identical widths;
  • the length of the third zone represents between 20% and 50% of the total length of the three zones;
  • the width of the third zone represents between 140% and 300% of the width of the first and second zones;
  • the third zone is thickened by extending radially towards the center of the ferrule;
  • the third zone is thickened by extending radially towards the inner coil of the spiral spring;
  • the third zone is thickened by extending radially towards the center of the ferrule and towards the inner coil of the spiral spring;
  • the spiral is formed of silicon.

En outre, l'invention se rapporte à un résonateur pour une pièce d'horlogerie caractérisé en ce qu'il comporte un arbre sur lequel est ajusté un balancier et un spiral selon l'une des variantes précédentes.In addition, the invention relates to a resonator for a timepiece characterized in that it comprises a shaft on which is fitted a balance and a hairspring according to one of the preceding variants.

Description sommaire des dessinsBrief description of the drawings

D'autres particularités et avantages ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une représentation d'un type d'assemblage selon l'invention ;
  • les figures 2 et 3 sont des représentations d'un premier mode de réalisation d'une virole selon l'invention ;
  • la figure 4 est une représentation d'un deuxième mode de réalisation selon l'invention ;
  • la figure 5 est une représentation d'un troisième mode de réalisation selon l'invention. Description détaillée des modes de réalisation préférés
Other particularities and advantages will emerge clearly from the description which is given hereinafter, by way of indication and in no way limiting, with reference to the appended drawings, in which:
  • the figure 1 is a representation of a type of assembly according to the invention;
  • the figures 2 and 3 are representations of a first embodiment of a ferrule according to the invention;
  • the figure 4 is a representation of a second embodiment according to the invention;
  • the figure 5 is a representation of a third embodiment according to the invention. Detailed Description of the Preferred Embodiments

L'invention se rapporte à un spiral destiné à être fixé élastiquement par une rondelle. Plus précisément, l'invention se rapporte à une virole adaptée à la fixation d'un spiral sur un arbre à l'aide du pincement élastique d'une rondelle.The invention relates to a spiral for being fixed elastically by a washer. More specifically, the invention relates to a ferrule adapted for fixing a hairspring on a shaft by means of the elastic nip of a washer.

Ce système d'assemblage est décrit dans les demandes EP 2 860 591 et EP 2 860 592 au nom du Demandeur incorporés par référence à la présente description. Ce système d'assemblage offre une très grande liberté quant aux matériaux utilisés. Il est ainsi notamment applicable pour une pièce dont le matériau ne comporte pas de domaine plastique utilisable, c'est-à-dire avec un domaine plastique très restreint, avec un organe comportant un autre type de matériau.This assembly system is described in the applications EP 2 860 591 and EP 2 860 592 in the name of the Applicant incorporated by reference in the present description. This assembly system offers a great deal of freedom in the materials used. It is thus notably applicable for a part whose material does not comprise a usable plastic field, that is to say with a very small plastic area, with a member comprising another type of material.

Dans le domaine horloger, ce type d'assemblage permettant une grande liberté quant aux matériaux utilisés doit être désormais proposé à cause de la part croissante que tiennent les matériaux à domaine plastique très restreint comme ceux à base de silicium tel que le silicium monocristallin (ou polycristallin) dopé ou non, l'oxyde de silicium comme du quartz ou de la silice, du corindon monocristallin ou polycristallin ou plus généralement de l'alumine, le nitrure de silicium et le carbure de silicium.In the field of watchmaking, this type of assembly allowing great freedom as to the materials used must now be proposed because of the increasing share of very small plastic materials such as those based on silicon such as monocrystalline silicon (or polycrystalline) doped or not, silicon oxide such as quartz or silica, monocrystalline or polycrystalline corundum or more generally alumina, silicon nitride and silicon carbide.

Un exemple de ce type d'assemblage est présenté à la figure 1. Le résonateur 101 pour une pièce d'horlogerie comporte un arbre 103 sur lequel est ajusté un balancier 105 et un spiral 107 qui peut avantageusement être un spiral 1, 21, 41 décrit dans la présente demande. Dans l'exemple de la figure 1, la virole du spiral 107 est ajustée élastiquement sur l'arbre 103 entre une rondelle 109 et une portée 111 de l'arbre 103. Comme expliqué dans les demandes EP 2 860 591 et EP 2 860 592 , la rondelle 109 serre, principalement au niveau de sa partie périphérique, la virole du spiral 107 par pincement élastique.An example of this type of assembly is presented at figure 1 . The resonator 101 for a timepiece comprises a shaft 103 on which is fitted a rocker 105 and a hairspring 107 which may advantageously be a hairspring 1, 21, 41 described in the present application. In the example of the figure 1 , the shell of the spiral 107 is resiliently fitted on the shaft 103 between a washer 109 and a bearing 111 of the shaft 103. As explained in the applications EP 2 860 591 and EP 2 860 592 , the washer 109 clamps, mainly at its peripheral portion, the shell of the spiral 107 by elastic nip.

La virole présentée à la figure 9 de la demande EP 2 916 177 comporte une bande 67, s'étendant sous forme d'un triangle, adaptée pour ce type d'assemblage décrit dans les demandes EP 2 860 591 et EP 2 860 592 . La bande 67, entre chacun des sommets dudit triangle, comporte une largeur non constante. Plus précisément, la bande 67, entre chacun des sommets dudit triangle, passe d'une largeur maximale au niveau des points de serrage en diminuant au fur et à mesure de l'approche des sommets sur deux des bras et un troisième bras avec un quatrième renflement permettant de positionner le centre de gravité sur le centre géométrique de la bande.The ferrule shown in Figure 9 of the application EP 2,916,177 comprises a strip 67, extending in the form of a triangle, adapted for this type of assembly described in the applications EP 2 860 591 and EP 2 860 592 . The band 67, between each of the vertices of said triangle, has a non-constant width. More precisely, the band 67, between each of the vertices of said triangle, goes from a maximum width to the level of the tightening points while decreasing as the apices approach on two of the arms and a third arm with a fourth bulge to position the center of gravity on the geometric center of the band.

En appliquant le critère de Von Mises, il est apparu que la virole 65 de la demande EP 2 916 177 est soumise à de grandes variations de contraintes le long de sa bande 67 pour un serrage de 6 µm au diamètre. En effet, les contraintes de contact au niveau des points de contact avec l'arbre sont comprises entre 300 et 450 MPa et les contraintes de flexion entre 500 et 600 MPa au niveau des sommets du triangle alors qu'elles sont quasiment nulles entre lesdits points de contact et lesdits sommets. Si ces valeurs maximales ne sont pas pénalisantes dans l'absolu pour la plupart des matériaux utilisés en horlogerie, la virole est toutefois soumise à de grandes variations de contrainte le long de sa bande. C'est pourquoi, la présente demande se propose de limiter les variations de contrainte le long de la bande, et particulièrement au niveau des points de contact.Applying the Von Mises criterion , it became apparent that the ferrule 65 of the application EP 2,916,177 is subject to wide variations of constraints along its band 67 for a tightening of 6 μm to the diameter. Indeed, the contact stresses at the points of contact with the shaft are between 300 and 450 MPa and bending stresses between 500 and 600 MPa at the vertices of the triangle whereas they are almost zero between said points. contact and said vertices. While these maximum values are not penalizing in absolute terms for most materials used in watchmaking, the ferrule is, however, subject to large variations in stress along its band. This is why the present application proposes to limit the variations in stress along the strip, and particularly at the points of contact.

De manière surprenante, il a été trouvé qu'en adaptant uniquement la géométrie des bras de la virole, il est possible de diminuer drastiquement la contrainte de contact appliquée au niveau des points de contact avec l'arbre mais également de limiter les contraintes de flexion maximales observables le long de la bande tout en bénéficiant toujours des avantages de la demande EP 2 916 177 et en maintenant le couple de tenue minimale de serrage sur l'axe.Surprisingly, it has been found that by adapting only the geometry of the arms of the shell, it is possible to drastically reduce the contact stress applied at the points of contact with the shaft but also to limit the bending stresses. observable along the band while still enjoying the benefits of demand EP 2,916,177 and maintaining the minimum holding torque on the axis.

Selon l'invention, le spiral 1, 21, 41 comporte ainsi un ressort-spiral 3 comportant une lame enroulée sur elle-même selon plusieurs spires et une virole 5, 25, 45 comportant une bande 7, 27, 47 s'étendant sensiblement sous forme d'un triangle. La bande 7, 27, 47 comporte, à chacun des sommets dudit triangle, un renflement 2, 4, 8, 22, 24, 28, 42, 44, 48 s'étendant radialement vers la spire interne SI du ressort-spiral 3. Enfin, le point d'attache entre le ressort-spiral 3 et la virole 5, 25, 45 est situé sur un des renflements 2, 22, 42 dudit triangle qui est symétrique par rapport à l'axe passant par le centre C de la virole et ledit point d'attache, le centre C pouvant être défini comme le centre du cercle inscrit dans l'ouverture de la virole 5, 25, 45.According to the invention, the hairspring 1, 21, 41 thus comprises a spiral spring 3 comprising a blade wound on itself in a plurality of turns and a shell 5, 25, 45 comprising a strip 7, 27, 47 extending substantially in the form of a triangle. The strip 7, 27, 47 comprises, at each of the vertices of said triangle, a bulge 2, 4, 8, 22, 24, 28, 42, 44, 48 extending radially towards the inner turn S I of the spiral spring 3 Finally, the point of attachment between the spiral spring 3 and the ferrule 5, 25, 45 is located on one of the bulges 2, 22, 42 of said triangle which is symmetrical with respect to the axis passing through the center C of the ferrule and said point of attachment, the center C being able to be defined as the center of the circle inscribed in the opening of the ferrule 5, 25, 45.

L'adaptation de la géométrie des bras de la virole 5, 25, 45, c'est-à-dire des parties de la bande 7, 27, 47 entre les sommets du triangle, se propose en fait de déplacer les zones d'élasticité, c'est-à-dire les zones flexibles, entre les points de contact P1, P2, P3 de l'arbre A et les sommets dudit triangle de la virole 5, 25, 45.The adaptation of the geometry of the arms of the shell 5, 25, 45, that is to say parts of the strip 7, 27, 47 between the vertices of the triangle, proposes in fact to move the zones of elasticity, that is the areas flexible, between the contact points P 1 , P 2 , P 3 of the shaft A and the tops of said triangle of the ferrule 5, 25, 45.

Ainsi, avantageusement selon l'invention, la bande 7, 27, 47, entre chacun des sommets dudit triangle, est formée de première et deuxième zones Z1x, Z2x à largeur sensiblement constante et d'une troisième zone Z3x, Z4x, Z5x, entre les première et deuxième zones Z1x, Z2x, qui comporte une largeur épaissie par rapport à celles des première et deuxième zones Z1x, Z2x et qui est agencée pour s'ajuster sur un arbre A permettant de déplacer les efforts de déformation élastique au niveau des première et deuxième zones Z1x, Z2x de la bande 7, 27, 47.Thus, advantageously according to the invention, the strip 7, 27, 47, between each of the vertices of said triangle, is formed of first and second zones Z 1x , Z 2x with a substantially constant width and a third zone Z 3x , Z 4x , Z 5x , between the first and second zones Z 1x , Z 2x , which has a width thickened with respect to those of the first and second zones Z 1x , Z 2x and which is arranged to fit on a shaft A to move the elastic deformation forces at the first and second zones Z 1x , Z 2x of the strip 7, 27, 47.

En appliquant à nouveau le critère de Von Mises, il est apparu, de manière surprenante, que la virole 5, 25, 45 de la présente demande est soumise à de plus faibles variations de contrainte le long de sa bande 7, 27, 47 par rapport à celles de la demande EP 2 916 177 . En effet, pour un serrage souhaité identique de 6 µm, les contraintes de contact au niveau des points de contact P1, P2, P3 avec l'arbre A sont toutes autour de 100 MPa et les contraintes de flexion ne dépassent pas 400 MPa le long de la bande 7, 27, 47.Applying the Von Mises criterion again , it surprisingly appeared that ferrule 5, 25, 45 of the present application is subjected to smaller variations of stress along its strip 7, 27, 47 by compared to those of the application EP 2,916,177 . Indeed, for a same desired tightening 6 μ m, contact contact stresses at the points P 1, P 2, P 3 with the shaft A are about 100 MPa and the bending stresses do not exceed 400 MPa along the strip 7, 27, 47.

Le plus surprenant pourrait être que les contraintes de contact soient également diminuées au niveau du point de contact P2 alors que le quatrième renflement 6, 26, 46 pourrait déjà être considéré comme un épaississement de la bande 7, 27, 47 au niveau d'un des bras de la virole 5, 25, 45. Il semble donc que la géométrie des trois zones Z1x, Z2x, Z3x, Z4x, Z5x, sur chacun des bras doit être sensiblement identique et respecter une certaine forme pour que les contraintes de flexion et de contact soient mieux équilibrées et moins élevées au sein de la virole 5, 25, 45.The most surprising could be that the contact stresses are also decreased at the point of contact P 2 while the fourth bulge 6, 26, 46 could already be considered as a thickening of the strip 7, 27, 47 at the level of one arm of the shroud 5, 25, 45. so it seems that the geometry of the three zones Z 1x Z 2x, 3x Z, Z 4x, 5x Z on each arm should be substantially identical and respect some form for that the bending and contact stresses are better balanced and lower within the ferrule 5, 25, 45.

Pour obtenir ces résultats, il a été maintenu des première et deuxième zones Z1x, Z2x avec préférentiellement des longueurs L13, L23, L1x, L2X, des hauteurs et des largeurs W13, W23, W1x, W2x identiques. De plus, il est apparu qu'une longueur de la troisième zone Z3x, Z4x, Z5x comprise entre 20% et 50% de la longueur totale des trois zones Z1x, Z2x, Z3x, Z4x, Z5x, et une largeur de la troisième zone Z3x, Z4x, Z5x représentant entre 140% et 300% de la largeur W1x, W2x des première et deuxième zones Z1x, Z2x permet de maintenir les avantages ci-dessus.To obtain these results, it was maintained the first and second 1x zones Z, Z 2x with preferably lengths L 13, L 23, L 1x, L 2X, heights and widths W 13, W 23, W 1x, W 2x identical. In addition, it appeared that a length of the third zone Z 3x, 4x Z, Z 5x between 20% and 50% of the total length of the three zones Z 1x Z 2 x Z 3 x Z 4x, Z 5x , and a width of the third zone Z 3x , Z 4x , Z 5x representing between 140% and 300% of the width W 1x , W 2x of the first and second zones Z 1x , Z 2x makes it possible to maintain the above advantages.

Trois exemples d'applications de l'invention sont présentés ci-dessous suivant un maintien de la hauteur et des variations de longueur et de largeur de la troisième zone Z3x, Z4x, Z5x. Ainsi, selon un premier mode de réalisation présenté à la figure 5, le spiral 41 comporte une virole 45 avec une bande 47 qui comporte trois troisième zones Z51, Z52, Z53 épaissies qui s'étendent chacune radialement vers le centre C de la virole 45. On peut observer que chaque troisième zone Z51, Z52, Z53 offre une surface sensiblement plane pour le point de contact P1, P2, P3 avec l'arbre A.Three examples of applications of the invention are presented below according to a maintenance of the height and variations in length and width of the third zone Z 3x , Z 4x , Z 5x . Thus, according to a first embodiment presented to the figure 5 , the hairspring 41 comprises a collar 45 with a band 47 which comprises three thickened zones Z 51 , Z 52 , and Z 53 which each extend radially towards the center C of the shell 45. It can be observed that each third zone Z 51 , Z 52 , Z 53 provides a substantially flat surface for the point of contact P 1 , P 2 , P 3 with the shaft A.

Les première et deuxième zones Z1x, Z2x de chaque bras de la bande 47 forment des prismes droits à section rectangulaire tous identiques pour offrir un caractère élastique identique entre eux. Une longueur de la troisième zone Z51, Z52, Z53 sensiblement égale à 20% de la longueur totale des trois zones Z1x, Z2x, Z5x, et une largeur de la troisième zone Z51, Z52, Z53 sensiblement égale 143% de la largeur W1x, W2x des première et deuxième zones Z1x, Z2x sont appliquées dans le premier mode de réalisation de la figure 5. On peut également voir qu'entre la largeur sensiblement constante au niveau de la surface sensiblement plane pour le point de contact P1, P2, P3 avec l'arbre A et celles des première et deuxième zones Z1x, Z2x, la troisième zone Z51, Z52, Z53 diminue sa largeur en suivant un rayon, c'est-à-dire de manière progressive.The first and second zones Z 1x , Z 2x of each arm of the band 47 form straight prisms with rectangular section all identical to provide an identical elastic character between them. A length of the third zone Z 51 , Z 52 , Z 53 substantially equal to 20% of the total length of the three zones Z 1x , Z 2 x, Z 5x , and a width of the third zone Z 51 , Z 52 , Z 53 substantially equal to 143% of the width W 1x , W 2x of the first and second zones Z 1x , Z 2x are applied in the first embodiment of the figure 5 . It can also be seen that between the substantially constant width at the level of the substantially planar surface for the point of contact P 1 , P 2 , P 3 with the shaft A and those of the first and second zones Z 1x , Z 2x , the third zone Z 51 , Z 52 , Z 53 decreases its width along a radius, that is to say progressively.

Enfin, on s'aperçoit qu'un quatrième renflement 46 s'étendant radialement vers la spire interne est présent au niveau de la troisième zone Z52 du bras opposé au renflement 42 afin de positionner le centre de gravité de la virole 45 au centre C de la virole 45.Finally, it can be seen that a fourth bulge 46 extending radially towards the inner turn is present at the third zone Z 52 of the arm opposite the bulge 42 so as to position the center of gravity of the ferrule 45 at the center C of the ferrule 45.

Selon un deuxième mode de réalisation présenté à la figure 4, le spiral 21 comporte une virole 25 avec une bande 27 qui comporte trois troisième zones Z41, Z42, Z43 épaissies qui s'étendent chacune radialement vers la spire interne du ressort-spiral. On peut observer que chaque troisième zone Z41, Z42, Z43 offre, pour le point de contact P1, P2, P3 avec l'arbre A, une surface sensiblement plane en prolongement des première et deuxième zones Z1x, Z2x adjacentes.According to a second embodiment presented to the figure 4 , the hairspring 21 comprises a collar 25 with a band 27 which comprises three thickened third zones Z 41 , Z 42 , Z 43 which each extend radially towards the inner coil of the spiral spring. It can be observed that each third zone Z 41 , Z 42 , Z 43 offers, for the point of contact P 1 , P 2 , P 3 with the shaft A, a substantially flat surface extending from the first and second zones Z 1x , Z 2x adjacent.

Les première et deuxième zones Z1x, Z2x de chaque bras de la bande 27 forment des prismes droits à section rectangulaire tous identiques pour offrir un caractère élastique identique entre eux. Une longueur de la troisième zone Z41, Z42, Z43 sensiblement égale à 42% de la longueur totale des trois zones Z1x, Z2x, Z4x, et une largeur de la troisième zone Z41, Z42, Z43 sensiblement égale 267% de la largeur W1x, W2x des première et deuxième zones Z1x, Z2x sont appliquées dans le deuxième mode de réalisation de la figure 4. On peut également voir qu'entre la largeur sensiblement constante au niveau de la surface sensiblement plane pour le point de contact P1, P2, P3 avec l'arbre A et celles des première et deuxième zones Z1x, Z2x, la troisième zone Z41, Z42, Z43 diminue sa largeur en suivant un rayon, c'est-à-dire de manière progressive.The first and second zones Z 1x , Z 2x of each arm of the band 27 form straight prisms with rectangular section all identical to provide an identical elastic character between them. A length of the third zone Z 41 , Z 42 , Z 43 substantially equal to 42% of the total length of the three zones Z 1x , Z 2 x, Z 4x , and a width of the third zone Z 41 , Z 42 , Z 43 substantially equal to 267% of the width W 1x , W 2x of the first and second zones Z 1x , Z 2x are applied in the second embodiment of the figure 4 . It can also be seen that between the substantially constant width at the level of the substantially planar surface for the point of contact P 1 , P 2 , P 3 with the shaft A and those of the first and second zones Z 1x , Z 2x , the third zone Z 41 , Z 42 , Z 43 decreases its width along a radius, that is to say gradually.

Enfin, on s'aperçoit qu'un quatrième renflement 26 s'étendant radialement vers la spire interne est présent en prolongement de la troisième zone Z42 du bras opposé au renflement 22 afin de positionner le centre de gravité de la virole 25 au centre C de la virole 25. En outre, on peut voir que, proportionnellement, le quatrième renflement 26 du deuxième mode de réalisation est plus volumineux que celui 46 du premier mode de réalisation.Finally, we see a fourth bead 26 extending radially towards the inner coil is present as an extension of the third zone Z 42 of the opposite arm to bulge 22 in order to position the center of gravity of the ferrule 25 to the center C Moreover, it can be seen that, proportionally, the fourth bulge 26 of the second embodiment is larger than that 46 of the first embodiment.

Selon un troisième mode de réalisation présenté aux figures 2 et 3, le spiral 1 comporte une virole 5 avec une bande 7 qui comporte trois troisième zones Z31, Z32, Z33 épaissies qui s'étendent chacune radialement vers le centre C de la virole 5 et vers la spire interne SI du ressort-spiral 3. On peut donc considérer le troisième mode de réalisation comme un mélange entre les premier et deuxième modes de réalisation. Toutefois, dans le troisième mode de réalisation, on s'aperçoit que chaque troisième zone Z31, Z32, Z33 offre une surface sensiblement concave pour le point de contact P1, P2, P3 avec l'arbre A.According to a third embodiment presented to figures 2 and 3 , the spiral 1 comprises a ferrule 5 with a band 7 which comprises three thickened third zones Z 31 , Z 32 , Z 33 which each extend radially towards the center C of the ferrule 5 and towards the inner coil S I of the spring 3. The third embodiment can thus be considered as a mixture between the first and second embodiments. However, in the third embodiment, one realizes that every third zone Z 31, Z 32, Z 33 provides a substantially concave surface to the contact point P 1, P 2, P 3 with the shaft A.

Les première et deuxième zones Z1x, Z2x de chaque bras de la bande 7 forment des prismes droits à section rectangulaire tous identiques pour offrir un caractère élastique identique entre eux. Une longueur de la troisième zone Z31, Z32, Z33 sensiblement égale à 38% de la longueur totale des trois zones Z1x, Z2x, Z3x, et une largeur de la troisième zone Z31, Z32, Z33 sensiblement égale à 167% de la largeur W1x, W2x des première et deuxième zones Z1x, Z2x sont appliquées dans le troisième mode de réalisation des figures 2 et 3. Plus précisément, une surépaisseur de 50% est appliquée radialement vers le centre C de la virole 5 et de 117% vers la spire interne SI du ressort-spiral 3. On peut également voir qu'entre la largeur maximale au niveau du point de contact P1, P2, P3 avec l'arbre A et celles des première et deuxième zones Z1x, Z2x, la troisième zone Z31, Z32, Z33 diminue sa largeur en suivant deux rayons distincts, c'est-à-dire de manière progressive sur les faces interne et externe de chaque bras.The first and second zones Z 1x , Z 2x of each arm of the strip 7 form straight prisms with rectangular section all identical to provide an identical elastic character between them. A length of the third zone Z 31 , Z 32 , Z 33 substantially equal to 38% of the total length of the three zones Z 1x , Z 2 x, Z 3x , and a width of the third zone Z 31 , Z 32 , Z 33 substantially equal to 167% of the width W 1x , W 2x of the first and second zones Z 1x , Z 2x are applied in the third embodiment of FIGS. figures 2 and 3 . More specifically, a 50% oversize is applied radially towards the center C of the shell 5 and 117% towards the inner turn S I of the spiral spring 3. It can also be seen that between the maximum width at the point of Contact P 1, P 2, P 3 with the shaft A and those of the first and second zones Z 1x Z 2x, the third zone Z 31, Z 32, Z 33 decreases its width along two separate rays, that is in a progressive manner on the inner and outer faces of each arm.

Enfin, on s'aperçoit qu'un quatrième renflement 6 s'étendant radialement vers la spire interne SI est présent en prolongement de la troisième zone Z32 du bras opposé au renflement 2 afin de positionner le centre de gravité de la virole 5 au centre C de la virole 5.Finally, it can be seen that a fourth bulge 6 extending radially towards the inner turn S I is present in extension of the third zone Z 32 of the arm opposite the bulge 2 in order to position the center of gravity of the ferrule 5 at center C of the ferrule 5.

Bien entendu, la présente invention ne se limite pas à l'exemple illustré mais est susceptible de diverses variantes et modifications qui apparaîtront à l'homme de l'art. En particulier, les trois modes de réalisation sont combinables entre eux sans sortir du cadre de l'invention. Ainsi, à titre d'exemple, les surfaces au niveau du point de contact P1, P2, P3 avec l'arbre A pourraient être interverties entre les premier et troisième modes de réalisation. On comprend donc que les surfaces au niveau du point de contact P1, P2, P3 peuvent être planes, convexes ou concaves sans sortir du cadre de l'invention.Of course, the present invention is not limited to the illustrated example but is susceptible of various variations and modifications that will occur to those skilled in the art. In particular, the three embodiments are combinable with each other without departing from the scope of the invention. Thus, by way of example, surfaces at the contact point P 1, P 2, P 3 with the shaft A could be interchanged between the first and third embodiments. It is therefore understood that the surfaces at the point of contact P 1 , P 2 , P 3 can be flat, convex or concave without departing from the scope of the invention.

De plus, la virole 5, 25, 45 selon l'invention ne saurait se limiter à une bande 7, 27, 47 sous forme de triangle. L'invention peut s'appliquer à un autre type de polygone.In addition, the ferrule 5, 25, 45 according to the invention can not be limited to a strip 7, 27, 47 in the form of a triangle. The invention can be applied to another type of polygon.

Le spiral 1, 21, 41 peut également être formé à l'aide de plusieurs matériaux. Ainsi, de manière nullement limitative, le matériau de base, comme par exemple à base de silicium, pourrait recevoir un revêtement total ou partiel composé d'une couche de compensation thermique et/ou d'une couche résistante et imperméable à l'humidité afin de rendre le spiral 1, 21, 41 moins sensible aux variations climatiques.The hairspring 1, 21, 41 can also be formed using several materials. Thus, in no way limiting, the base material, such as for example based on silicon, could receive a total or partial coating consisting of a thermal compensation layer and / or a resistant and moisture-proof layer so to make the hairspring 1, 21, 41 less sensitive to climatic variations.

Enfin, dans le but d'améliorer la chronométrie du résonateur dans lequel il est intégré, le spiral 1, 21, 41 peut également comporter une spire interne SI suivant une courbe du type Grossmann et une spire externe partiellement épaissie.Finally, in order to improve the chronometry of the resonator in which it is integrated, the hairspring 1, 21, 41 may also comprise an internal turn S I following a Grossmann type curve and a partially thickened outer turn.

Claims (9)

Spiral (1, 21, 41) comportant un ressort-spiral (3) formé d'une lame enroulée sur elle-même selon plusieurs spires et d'une virole (5, 25, 45) comprenant une bande (7, 27, 47) s'étendant sensiblement sous forme d'un triangle, la bande (7, 27, 47) comportant, à chacun des sommets dudit triangle, un renflement (2, 4, 8, 22, 24, 28, 42, 44, 48) s'étendant radialement vers la spire interne (SI) du ressort-spiral (3), le point d'attache entre le ressort-spiral (3) et la virole (5, 25, 45) étant situé sur un des renflements (2, 4, 8, 22, 24, 28, 42, 44, 48) dudit triangle qui est symétrique par rapport à l'arbre (A, 103) passant par le centre (C) de la virole (5, 25, 45) et ledit point d'attache caractérisé en ce que la bande (7, 27, 47), entre chacun des sommets dudit triangle, est formée de première et deuxième zones (Z1x, Z2x) à largeurs sensiblement constantes (W1x, W2x) et d'une troisième zone (Z3x, Z4x, Z5x), entre les première et deuxième zones (Z1x, Z2x), qui comprend une largeur épaissie par rapport à celles (W1x, W2x) des première et deuxième zones (Z1x, Z2x) et qui est agencée pour s'ajuster sur un arbre (A, 103) permettant de déplacer les efforts de déformation élastique au niveau des première et deuxième deux zones (Z1x, Z2x).Spiral (1, 21, 41) comprising a spiral spring (3) formed of a blade wound on itself in a plurality of turns and a ferrule (5, 25, 45) comprising a band (7, 27, 47 ) extending substantially in the form of a triangle, the band (7, 27, 47) having, at each of the vertices of said triangle, a bulge (2, 4, 8, 22, 24, 28, 42, 44, 48 ) extending radially towards the inner coil (S I ) of the spiral spring (3), the point of attachment between the spiral spring (3) and the ferrule (5, 25, 45) being located on one of the bulges (2, 4, 8, 22, 24, 28, 42, 44, 48) of said triangle which is symmetrical with respect to the shaft (A, 103) passing through the center (C) of the ferrule (5, 25, 45) and said attachment point characterized in that the strip (7, 27, 47) between each of the vertices of said triangle is formed of first and second zones (Z 1x , Z 2x ) with substantially constant widths (W 1x , W 2x ) and a third zone (Z 3x , Z 4x , Z 5x ), between the first and second zones (Z 1x , Z 2x ), which comprises a width thickened with respect to those (W 1x , W 2x ) of the first and second zones (Z 1x , Z 2x ) and which is arranged to fit on a shaft (A, 103) allowing to move the elastic deformation forces at the first and second two zones (Z 1x , Z 2x ). Spiral (1, 21, 41) selon la revendication précédente, caractérisé en ce que les première et deuxième zones (Z1x, Z2x) comportent des largeurs (W1x, W2x) identiques.Spiral (1, 21, 41) according to the preceding claim, characterized in that the first and second zones (Z 1x, 2x Z) have widths (W 1x, 2x W) identical. Spiral (1, 21, 41) selon la revendication 1 ou 2, caractérisé en ce que la longueur de la troisième zone (Z3x, Z4x, Z5x) représente entre 20% et 50% de la longueur totale des trois zones (Z1x, Z2x, Z3x, Z4x, Z5x).Spiral (1, 21, 41) according to claim 1 or 2, characterized in that the length of the third zone (Z 3x , Z 4x , Z 5x ) represents between 20% and 50% of the total length of the three zones ( Z 1x , Z 2x , Z 3x , Z 4x , Z 5x ). Spiral (1, 21, 41) selon l'une des revendications précédentes, caractérisé en ce que la largeur de la troisième zone (Z3x, Z4x, Z5x) représente entre 140% et 300% de la largeur (W1x, W2x) des première et deuxième zones (Z1x, Z2x).Spiral (1, 21, 41) according to one of the preceding claims, characterized in that the width of the third zone (Z 3x , Z 4x , Z 5x ) represents between 140% and 300% of the width (W 1x , W 2x ) of the first and second zones (Z 1x , Z 2x ). Spiral (1, 21, 41) selon l'une des revendications précédentes, caractérisé en ce que la troisième zone (Z3x, Z4x, Z5x) est épaissie en s'étendant radialement vers le centre (C) de la virole (5, 25, 45).Spiral (1, 21, 41) according to one of the preceding claims, characterized in that the third zone (Z 3x , Z 4x , Z 5x ) is thickened by extending radially towards the center (C) of the ferrule ( 5, 25, 45). Spiral (1, 21, 41) selon l'une des revendications 1 à 4, caractérisé en ce que la troisième zone (Z3x, Z4x, Z5x) est épaissie en s'étendant radialement vers la spire interne (SI) du ressort-spiral (3).Spiral (1, 21, 41) according to one of claims 1 to 4, characterized in that the third zone (Z 3x , Z 4x , Z 5x ) is thickened by extending radially towards the inner coil (S I ) spiral spring (3). Spiral (1, 21, 41) selon l'une des revendications 1 à 4, caractérisé en ce que la troisième zone (Z3x, Z4x, Z5x) est épaissie en s'étendant radialement vers le centre (C) de la virole (5, 25, 45) et vers la spire interne (SI) du ressort-spiral (3).Spiral (1, 21, 41) according to one of claims 1 to 4, characterized in that the third zone (Z 3x , Z 4x , Z 5x ) is thickened by extending radially towards the center (C) of the ferrule (5, 25, 45) and towards the inner coil (S I ) of the spiral spring (3). Spiral (1, 21, 41) selon l'une des revendications précédentes, caractérisé en ce que le spiral est formé à base de silicium.Spiral (1, 21, 41) according to one of the preceding claims, characterized in that the spiral is formed based on silicon. Résonateur (101) pour une pièce d'horlogerie caractérisé en ce qu'il comporte un arbre (A, 103) sur lequel est ajusté un balancier (105) et un spiral (1, 21, 41) selon l'une des revendications précédentes.Resonator (101) for a timepiece characterized in that it comprises a shaft (A, 103) on which is fitted a rocker (105) and a spiral (1, 21, 41) according to one of the preceding claims .
EP16193768.5A 2016-10-13 2016-10-13 Hairspring intended for being attached by a spring washer Active EP3309625B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP16193768.5A EP3309625B1 (en) 2016-10-13 2016-10-13 Hairspring intended for being attached by a spring washer
RU2017134919A RU2760638C2 (en) 2016-10-13 2017-10-04 Balanced spring fastened with elastic washer
US15/725,392 US10444707B2 (en) 2016-10-13 2017-10-05 Balance-spring intended to be secured by a resilient washer
JP2017195774A JP6606535B2 (en) 2016-10-13 2017-10-06 Hairspring for fixing with elastic washers
CN201710952282.9A CN107942639B (en) 2016-10-13 2017-10-13 Hairspring for fixing by means of an elastic washer
HK18113081.3A HK1253932A1 (en) 2016-10-13 2018-10-12 Balance-spring intended to be secured by a resilient washer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16193768.5A EP3309625B1 (en) 2016-10-13 2016-10-13 Hairspring intended for being attached by a spring washer

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EP3309625A1 true EP3309625A1 (en) 2018-04-18
EP3309625B1 EP3309625B1 (en) 2020-07-29

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EP16193768.5A Active EP3309625B1 (en) 2016-10-13 2016-10-13 Hairspring intended for being attached by a spring washer

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US (1) US10444707B2 (en)
EP (1) EP3309625B1 (en)
JP (1) JP6606535B2 (en)
CN (1) CN107942639B (en)
HK (1) HK1253932A1 (en)
RU (1) RU2760638C2 (en)

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EP3627235A1 (en) * 2018-09-21 2020-03-25 Nivarox-FAR S.A. Elastic holding member for fixing a timepiece component on a support element
EP3627238A1 (en) * 2018-09-21 2020-03-25 Nivarox-FAR S.A. Elastic holding member for fixing a timepiece component on a support element
EP3627236A1 (en) * 2018-09-21 2020-03-25 Nivarox-FAR S.A. Elastic holding member for fixing a timepiece component on a support element
EP3722889A1 (en) * 2019-04-08 2020-10-14 Nivarox-FAR S.A. Elastic holding member for fixing a timepiece component on different support elements
US12019398B2 (en) 2018-12-17 2024-06-25 Nivarox—FAR S.A. Elastic securing organ for fastening a horological component on a support element

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EP3671364A1 (en) * 2018-12-17 2020-06-24 Nivarox-FAR S.A. Elastic holding member for fixing a timepiece component on a support element

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EP2860592A1 (en) 2013-10-09 2015-04-15 Nivarox-FAR S.A. Assembly system using a planar resilient locking member
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Publication number Priority date Publication date Assignee Title
EP3627235A1 (en) * 2018-09-21 2020-03-25 Nivarox-FAR S.A. Elastic holding member for fixing a timepiece component on a support element
EP3627238A1 (en) * 2018-09-21 2020-03-25 Nivarox-FAR S.A. Elastic holding member for fixing a timepiece component on a support element
EP3627236A1 (en) * 2018-09-21 2020-03-25 Nivarox-FAR S.A. Elastic holding member for fixing a timepiece component on a support element
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WO2020057969A1 (en) * 2018-09-21 2020-03-26 Nivarox-Far S.A. Elastic retaining member for attaching a timepiece component to a support element
US11906930B2 (en) 2018-09-21 2024-02-20 Nivarox-Far S.A. Elastic retaining member for fixing a timepiece component on a support element
US12019398B2 (en) 2018-12-17 2024-06-25 Nivarox—FAR S.A. Elastic securing organ for fastening a horological component on a support element
EP3722889A1 (en) * 2019-04-08 2020-10-14 Nivarox-FAR S.A. Elastic holding member for fixing a timepiece component on different support elements
CN113632014A (en) * 2019-04-08 2021-11-09 尼瓦罗克斯-法尔股份公司 Elastic holding member for fixing a timepiece component to different support elements

Also Published As

Publication number Publication date
RU2760638C2 (en) 2021-11-29
EP3309625B1 (en) 2020-07-29
JP2018063250A (en) 2018-04-19
CN107942639B (en) 2020-10-16
HK1253932A1 (en) 2019-07-05
CN107942639A (en) 2018-04-20
US10444707B2 (en) 2019-10-15
RU2017134919A3 (en) 2020-12-17
JP6606535B2 (en) 2019-11-13
US20180107162A1 (en) 2018-04-19
RU2017134919A (en) 2019-04-04

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