EP3098669A1 - Hairspring intended for being clamped by a spring washer - Google Patents

Hairspring intended for being clamped by a spring washer Download PDF

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Publication number
EP3098669A1
EP3098669A1 EP16172457.0A EP16172457A EP3098669A1 EP 3098669 A1 EP3098669 A1 EP 3098669A1 EP 16172457 A EP16172457 A EP 16172457A EP 3098669 A1 EP3098669 A1 EP 3098669A1
Authority
EP
European Patent Office
Prior art keywords
spiral
strip
bulge
axis
ferrule
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.)
Withdrawn
Application number
EP16172457.0A
Other languages
German (de)
French (fr)
Inventor
Marc Stranczl
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 EP16172457.0A priority Critical patent/EP3098669A1/en
Publication of EP3098669A1 publication Critical patent/EP3098669A1/en
Withdrawn legal-status Critical Current

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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
    • G04B99/00—Subject matter not provided for in other groups of this subclass
    • 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
    • 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
    • G04B17/04—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
    • G04B17/32—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
    • 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

Definitions

  • the invention relates to a hairspring adapted to the assembly system described in the patent applications.
  • EP 13 187833 and EP 13 187836 that is to say a spiral blocked elastically on an axis by a washer.
  • the object of the present invention is to overcome all or part of the aforementioned drawbacks by proposing a hairspring whose one-piece shell is adapted to be mounted using the assembly system described in the patent applications.
  • EP 13 187833 and EP 13 187836 are examples of the hairspring whose one-piece shell is adapted to be mounted using the assembly system described in the patent applications.
  • the invention relates to a spiral comprising a blade wound on itself in a plurality of turns, the inner coil being shaped with a ferrule comprising a band extending substantially in the form of a polygon characterized in that the strip comprises, at each of the vertices of said polygon, a bulge extending radially towards the inner coil, the point of attachment between the inner coil and the ferrule being situated on one of the bulges of the ferrule which is symmetrical with respect to the axis passing through the center of the ferrule and said point of attachment and in that the distance between the center of the ferrule and the end of each bulge is substantially constant in order to provide an outer contour at each bulge which has two walls extending axially substantially parallel to each other with respect to the segment formed between the center of the ferrule and the end of said bulge and in that the band has a non-constant width between each of the vertices of said polygon.
  • the outer contour is optimized so that the spring washer mainly squeezes the hairspring at the vertices of the band of its shell. Indeed, even if the bulges are not pinched by the washer, its two substantially parallel walls oriented substantially orthogonally with respect to the peripheral wall of the washer advantageously avoid grits.
  • the invention relates to a resonator for a timepiece characterized in that it comprises an axis on which is fitted a balance and a hairspring according to one of the preceding variants.
  • the invention relates to a spiral whose monobloc shell is adapted to the assembly system described in the patent applications EP 13 187833 and EP 13 187836 .
  • This assembly system is provided for a part whose material has no usable plastic field, that is to say with a very small plastic area, with a member comprising another type of material.
  • this assembly is made necessary by the growing share of fragile materials such as those based on silicon such as monocrystalline silicon (or polycrystalline silicon) doped or not, silicon oxide such as quartz or silica , monocrystalline or polycrystalline corundum or more generally alumina, silicon nitride and silicon carbide.
  • silicon such as monocrystalline silicon (or polycrystalline silicon) doped or not, silicon oxide such as quartz or silica , monocrystalline or polycrystalline corundum or more generally alumina, silicon nitride and silicon carbide.
  • the hairspring 1 comprises a blade 3 wound on itself in a plurality of turns, the inner coil P I being shaped with a shell 5, 25, 45, 65 having a strip 7, 27, 47, 67 extending substantially in the form of a polygon.
  • the strip 7, 27, 47, 67 comprises a polygon in the shape of a triangle or diamond of width L 1 , L 2 , L 3 , L 4 , L 5 , L 6 , L 7 , L 8 , substantially constant.
  • the strip 7, 27, 47, 67 comprises, at each of the vertices of the polygon, a bulge 2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68 of respective widths L ' 2 , L' 4 , L ' 6 , L' 8 , extending radially towards the inner turn P I , to form the portions S 1 , S 2 , S 3 , S 4 of external outline of the shell 5, 25, 45, 65 which are furthest from the center C of the shell 5, 25, 45, 65, the center C being formed by the center of the circle inscribed in the opening of the shell 5 , 25, 45, 65.
  • the point of attachment S 1 between the inner turn P I and the ferrule 5, 45, 65 is situated on a 2, 52, 72 of the bulges 2, 4, 8, 42, 44, 48, 62, 64, 68 5, 45, 65. It is also noted that the ferrule 5, 45, 65 is symmetrical with respect to the axis passing through the center C of the ferrule 5, 45, 65 and the point of attachment S 1 .
  • the distance between the center C of the shell 5, 45, 65 and the end S 1 , S 2 , S 3 of each bulge 2, 4, 8, 42, 44, 48, 62 , 64, 68 is substantially constant to provide an outer contour at each bulge 2, 4, 8, 42, 44, 48, 62, 64, 68 which has two walls 2 1 -2 2 , 4 1 -4 2 , 8 1 -8 2 , 42 1 -42 2 , 44 1 -44 2 , 48 1 -48 2 , 62 1 -62 2 , 64 1 -64 2 , 68 1 -68 2 extending axially and substantially parallel between them but also parallel to the segment formed between the center C of the shell and the end S 1 , S 2 , S 3 of each bulge 2, 4, 8, 42, 44, 48, 62, 64, 68 associated .
  • the distance between the two walls 2 1 -2 2 of the bulge 2 is smaller than those of the walls 4 1 -4 2 , 8 1 -8 2 respectively of the bulges 4 and 8 whereas in the figures 8 and 9 the distances between the two walls 42 1 -42 2 , 44 1 -44 2 , 48 1 -48 2 , 62 1 -62 2 , 64 1 -64 2 , 68 1 -68 2 bulges respectively 42, 44, 48 , 62, 64, 68 are substantially constant.
  • the strip 7, 27, 47, 67 is bent towards the center C of the shell 5, 25, 45, 65 between each vertex of the polygon so as to form at least three clamping points Q 1 , Q 2 , Q 3 , Q 4 arranged to fit on an axis 11, 11 '.
  • the band 47 is more curved than the strips 7, 27, 67 respectively of the figures 3 , 9 and 10 .
  • the strip 7, 27 further comprises a thickening 2 ', 22' of width L " 2 extending radially from the inner wall of the strip 7, 27 towards the center C of the ferrule 5, 25 at the apex of the triangle having the point of attachment S 1 in order to avoid the displacement of the point of attachment S 1 during a deformation F 1 of the strip 7, 27 caused by the reception of the axis 11, 11 'larger than the opening between the clamping points Q 1 , Q 2 , Q 3 , Q 4 .
  • figures 8 and 9 that the band 47, 67 does not include such a thickening. It is therefore understood that the latter is not an essential feature of the invention.
  • the strip 7, 47, 67 comprises, on the portion 12, 52, 72 between two peaks of the triangle which has the bulges 4-8, 44-48 and 64-68 and which is opposite the point d S 1 attachment relative to the center C of the ferrule 5, 45, 65, a fourth bulge 6, 46, 66 of width L ' 6 extending radially towards the inner turn P I to position the center of gravity of the ferrule 5, 45, 65 at the center C of the opening of the ferrule 5, 45, 65.
  • the thickening 2 ', 22' in order to avoid the displacement of the point of attachment S 1 during a deformation F 1 of the strip 7, 27, 47, 67, it is also possible to vary the width of the band 7, 27, 47, 67 between the vertices of the polygon, that is to say having a different width or a non-constant width.
  • the figure 9 shows an example of the non-constant width.
  • the shell 65 has an allowance of about 10% localized at the widths L 1 and L 3 , that is to say at the points of clamping Q 1 , Q 2 , Q 3 , compared to the rest of the band 67, that is to say with respect to the widths L 2 , L 4 , L 5 , L 6 , L 7 and L 8 .
  • the modification of the rigidity of the latter to keep the center of the spiral 1 coaxial with its axis 11 can be done by changing the thickness of the band 7, 27, 47, 67 and / or by changing the length of the strip 7, 27, 47, 67 between the polygon apices and / or by varying the width of the bulges 2, 4, 6, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68 or thickenings 2 ', 22' on the strip 7, 27, 47, 67 and / or by adding the strip 7, 27, 47, 67.
  • the hairspring 1 can thus be formed in a manner that is in no way limitative from a silicon-based material such as doped or uncropped silicon monocrystalline silicon, doped or unpoped polycrystalline silicon, doped or unopened silicon monocrystalline silicon, and coated with a silicon oxide, doped polycrystalline silicon or not and coated with an oxide of silicon, silicon oxide, quartz, silica, silicon nitride, silicon nitride coated with an oxide of silicon, silicon carbide or silicon carbide coated with a silicon oxide, without risk that the material is broken by a washer 10,10 'during the elastic clamping.
  • the spiral 1 can thus be formed in no way limiting from monocrystalline corundum, polycrystalline corundum or alumina.
  • the washer 10 is a perfect ring, that is to say a disc with an opening 18, having an upper face 19 and a lower face 16 which can be used to tighten the hairspring 1.
  • the edges of the washer 10 may include bevels 15 to avoid grits and smudges during manufacture.
  • the washer 10 ' is a ring, that is to say a disc with an opening 18', having an upper face 19 'and a lower face 16'.
  • the upper face 19 ' communicates with the opening 18' with the aid of a conical surface 17 'and is used to tighten the hairspring 1.
  • the edges of the washer 10' may comprise bevels 15 'for avoid grittiness.
  • the hairspring 1 comprises an internal turn P I following a Grossmann type curve and an outer turn P E partially thickened to improve the concentricity of its contraction and expansion.
  • the hairspring 1 further comprises a resistant and moisture-impermeable layer to make it less sensitive to climatic variations.
  • the invention also relates to a resonator 21, 21 'for a timepiece comprising an axis 11, 11' on which is fitted a rocker 13, 13 'and the hairspring 1 according to one of the preceding variants.
  • the resonator 21 comprises the hairspring 1 which is fitted on the axis 11 between an elastic washer 10 and the rocker 13.
  • the resonator 21 ' comprises the hairspring 1 which is fitted on the axis 11' between an elastic washer 10 and a bearing surface 14 'of the shaft 11'.
  • the two elastic washer alternatives 10, 10 ' can be used.
  • the washer 10, 10 ' mainly clamps the hairspring 1 at the level F 2 of the peaks of the band 7, 27, 47, 67 of its shell 5, 25, 45, 65 but also on the fourth bulge 6, 26, 46 , 66.
  • 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.
  • the shapes and dimensions of the hairspring 1 can not be limited to the examples of the Figures 1 to 10 .
  • the shapes and the dimensions of the hairspring 1 can differ notably at the level of the bulges 2, 4, 6, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68 and or the strip 7, 27, 47, 67 and / or the thickening 2 ', 22' and / or the bending of the strip 7, 27, 47, 67.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Springs (AREA)
  • Adornments (AREA)
  • Prostheses (AREA)
  • Toys (AREA)
  • Dry Shavers And Clippers (AREA)

Abstract

L'invention se rapporte à un spiral (1) comportant une lame (3) enroulée sur elle-même selon plusieurs spires (P I , P E ), la spire interne (P I ) étant venue de forme avec une virole (5) comportant une bande (7) s'étendant sensiblement sous forme d'un polygone. Selon l'invention, le contour externe au niveau de chaque renflement (2, 4, 8) des sommets du polygone comporte deux parois (2 1 -2 2 , 4 1 -4 2 , 8 1 -8 2 ) s'étendant axialement sensiblement parallèlement entre elles par rapport au segment formé entre le centre (C) de la virole (5) et l'extrémité (S 1 , S 2 , S 3 ) de dudit renflement (2, 4,8).The invention relates to a spiral (1) comprising a blade (3) wound on itself in several turns (PI, PE), the inner coil (PI) being shaped with a ferrule (5) having a band (7) extending substantially in the form of a polygon. According to the invention, the outer contour at each bulge (2, 4, 8) of the vertices of the polygon comprises two walls (2 1 -2 2, 4 1 -4 2, 8 1 -8 2) extending axially substantially parallel to each other with respect to the segment formed between the center (C) of the shell (5) and the end (S 1, S 2, S 3) of said bulge (2, 4.8).

Description

Domaine de l'inventionField of the invention

L'invention se rapporte à un spiral adapté au système d'assemblage décrit dans les demandes de brevet EP 13 187833 et EP 13 187836 , c'est-à-dire un spiral bloqué élastiquement sur un axe par une rondelle.The invention relates to a hairspring adapted to the assembly system described in the patent applications. EP 13 187833 and EP 13 187836 , that is to say a spiral blocked elastically on an axis by a washer.

Arrière-plan de l'inventionBackground of the invention

Les assemblages actuels comportant un spiral à base de silicium sont généralement solidarisés par collage. Ainsi une virole monobloc avec le spiral, comme par exemple celle divulguée dans le document EP 2 184 653 , est ajustée sur un axe puis collé au niveau de ses points de contact. Une telle opération nécessite une extrême finesse d'application ce qui la rend coûteuse.Current assemblies comprising a spiral based on silicon are generally secured by gluing. Thus a monobloc shell with the spiral, such as that disclosed in the document EP 2 184 653 , is adjusted on an axis and then glued at its points of contact. Such an operation requires extreme finesse of application which makes it expensive.

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 un spiral dont la virole monobloc est adaptée pour être montée à l'aide du système d'assemblage décrit dans les demandes de brevet EP 13 187833 et EP 13 187836 .The object of the present invention is to overcome all or part of the aforementioned drawbacks by proposing a hairspring whose one-piece shell is adapted to be mounted using the assembly system described in the patent applications. EP 13 187833 and EP 13 187836 .

A cet effet, l'invention se rapporte à un spiral comportant une lame enroulée sur elle-même selon plusieurs spires, la spire interne étant venue de forme avec une virole comportant une bande s'étendant sensiblement sous forme d'un polygone caractérisé en ce que la bande comporte, à chacun des sommets dudit polygone, un renflement s'étendant radialement vers la spire interne, le point d'attache entre la spire interne et la virole étant situé sur un des renflements de la virole qui est symétrique par rapport à l'axe passant par le centre de la virole et ledit point d'attache et en ce que la distance entre le centre de la virole et l'extrémité de chaque renflement est sensiblement constante afin d'offrir un contour externe au niveau de chaque renflement qui comporte deux parois s'étendant axialement sensiblement parallèlement entre elles par rapport au segment formé entre le centre de la virole et l'extrémité de dudit renflement et en ce que la bande comporte une largeur non constante entre chacun des sommets dudit polygone.For this purpose, the invention relates to a spiral comprising a blade wound on itself in a plurality of turns, the inner coil being shaped with a ferrule comprising a band extending substantially in the form of a polygon characterized in that the strip comprises, at each of the vertices of said polygon, a bulge extending radially towards the inner coil, the point of attachment between the inner coil and the ferrule being situated on one of the bulges of the ferrule which is symmetrical with respect to the axis passing through the center of the ferrule and said point of attachment and in that the distance between the center of the ferrule and the end of each bulge is substantially constant in order to provide an outer contour at each bulge which has two walls extending axially substantially parallel to each other with respect to the segment formed between the center of the ferrule and the end of said bulge and in that the band has a non-constant width between each of the vertices of said polygon.

On comprend ainsi que le contour externe est optimisé pour que la rondelle élastique serre principalement le spiral au niveau des sommets de la bande de sa virole. En effet, même si les renflements ne sont pas pincés par la rondelle, ses deux parois sensiblement parallèles orientées sensiblement orthogonalement par rapport à la paroi périphérique de la rondelle évitent avantageusement les égrisures.It is thus understood that the outer contour is optimized so that the spring washer mainly squeezes the hairspring at the vertices of the band of its shell. Indeed, even if the bulges are not pinched by the washer, its two substantially parallel walls oriented substantially orthogonally with respect to the peripheral wall of the washer advantageously avoid grits.

Conformément à d'autres modes de réalisation avantageux de l'invention :

  • la bande est surépaissie au niveau de points de serrage agencés pour s'ajuster sur un axe ;
  • les distances entre lesdites deux parois de chaque renflement sont sensiblement constantes ;
  • la bande est surépaissie d'environ 10% au niveau des points de serrage par rapport au reste de la bande ;
  • la bande s'étend sensiblement sous forme d'un triangle, d'un quadrilatère, d'un pentagone ou d'un hexagone ;
  • le spiral comporte une spire interne suivant une courbe du type Grossmann et une spire externe partiellement épaissie ;
  • le spiral est formé à base de silicium ;
  • le spiral comporte en outre une couche résistante et imperméable à l'humidité afin de rendre le spiral moins sensible aux variations climatiques.
According to other advantageous embodiments of the invention:
  • the strip is thickened at the level of clamping points arranged to fit on an axis;
  • the distances between said two walls of each bulge are substantially constant;
  • the strip is thicker by about 10% at the clamping points relative to the rest of the strip;
  • the band extends substantially in the form of a triangle, a quadrilateral, a pentagon or a hexagon;
  • the hairspring comprises an internal turn according to a Grossmann type curve and a partially thickened outer turn;
  • the spiral is formed of silicon;
  • the hairspring further comprises a resistant and moisture-proof layer to make the hairspring less sensitive to climatic variations.

De plus, l'invention se rapporte à un résonateur pour une pièce d'horlogerie caractérisé en ce qu'il comporte un axe 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 an axis on which is fitted a balance and a hairspring according to one of the preceding variants.

Conformément à d'autres modes de réalisation avantageux de l'invention :

  • le spiral est ajusté sur l'axe entre une rondelle élastique et une portée de l'axe ;
  • le spiral est ajusté sur l'axe entre une rondelle élastique et le balancier ;
  • la rondelle élastique serre principalement le spiral au niveau des sommets de la bande de sa virole.
According to other advantageous embodiments of the invention:
  • the hairspring is fitted on the axis between an elastic washer and a bearing of the axis;
  • the hairspring is fitted on the axis between an elastic washer and the balance;
  • the elastic washer mainly squeezes the hairspring at the tops of the band of its shell.

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 en perspective d'un spiral selon l'invention ;
  • la figure 2 est une représentation partielle de la figure 1 dans laquelle la virole est déformée élastiquement ;
  • la figure 3 est une représentation vue de dessus d'une virole selon un premier mode de réalisation de l'invention ;
  • les figures 4 et 5 sont des exemples de rondelles pour ajuster le spiral selon l'invention sur un axe ;
  • les figures 6 et 7 sont des exemples de résonateur selon l'invention ;
  • la figure 8 est une représentation vue de dessus d'une virole selon un deuxième mode de réalisation de l'invention ;
  • la figure 9 est une représentation vue de dessus d'une virole selon un troisième mode de réalisation de l'invention ;
  • la figure 10 est une représentation vue de dessus d'une virole selon un quatrième mode de réalisation de l'invention.
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 perspective representation of a hairspring according to the invention;
  • the figure 2 is a partial representation of the figure 1 wherein the ferrule is elastically deformed;
  • the figure 3 is a top view of a ferrule according to a first embodiment of the invention;
  • the Figures 4 and 5 are examples of washers for adjusting the hairspring according to the invention on an axis;
  • the Figures 6 and 7 are examples of resonator according to the invention;
  • the figure 8 is a top view of a ferrule according to a second embodiment of the invention;
  • the figure 9 is a top view of a ferrule according to a third embodiment of the invention;
  • the figure 10 is a top view of a ferrule according to a fourth embodiment of the invention.

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

Comme expliqué ci-dessus, l'invention se rapporte à un spiral dont la virole monobloc est adaptée au système d'assemblage décrit dans les demandes de brevet EP 13 187833 et EP 13 187836 . Ce système d'assemblage est prévu 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.As explained above, the invention relates to a spiral whose monobloc shell is adapted to the assembly system described in the patent applications EP 13 187833 and EP 13 187836 . This assembly system is provided for a part whose material has no 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, cet assemblage est rendu nécessaire par la part croissante que tiennent les matériaux fragiles 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 watchmaking field, this assembly is made necessary by the growing share of fragile materials such as those based on silicon such as monocrystalline silicon (or polycrystalline silicon) doped or not, silicon oxide such as quartz or silica , monocrystalline or polycrystalline corundum or more generally alumina, silicon nitride and silicon carbide.

Toutefois, le fait de toujours pouvoir utiliser des axes habituels en acier dont la fabrication est maîtrisée, est une contrainte qui est difficile à concilier avec l'utilisation de pièces ne comportant pas de domaine plastique. En effet, lors de tests effectués, le chassage d'un axe en acier est impossible et brise systématiquement les pièces fragiles, c'est-à-dire ne comportant pas ou un très faible domaine plastique utilisable. Par exemple, il est apparu que le cisaillement généré par l'entrée de l'axe métallique dans l'ouverture d'une pièce en silicium brise systématique cette dernière.However, the fact of always being able to use usual steel axes whose production is controlled, is a constraint that is difficult to reconcile with the use of parts that do not include a plastic field. Indeed, during tests carried out, the driving of a steel shaft is impossible and systematically breaks the fragile parts, that is to say not having or a very small usable plastic field. For example, it has been found that the shear generated by the entry of the metal axis into the opening of a silicon part breaks the latter systematically.

Ainsi, le spiral 1 comporte une lame 3 enroulée sur elle-même selon plusieurs spires, la spire interne PI étant venue de forme avec une virole 5, 25, 45, 65 comportant une bande 7, 27, 47, 67 s'étendant sensiblement sous forme d'un polygone. Comme visible aux exemples des figures 3, 8, 9 et 10, la bande 7, 27, 47, 67 comporte un polygone en forme de triangle ou de losange de largeur L1, L2, L3, L4, L5, L6, L7, L8, sensiblement constante.Thus, the hairspring 1 comprises a blade 3 wound on itself in a plurality of turns, the inner coil P I being shaped with a shell 5, 25, 45, 65 having a strip 7, 27, 47, 67 extending substantially in the form of a polygon. As visible in the examples of figures 3 , 8 , 9 and 10 , the strip 7, 27, 47, 67 comprises a polygon in the shape of a triangle or diamond of width L 1 , L 2 , L 3 , L 4 , L 5 , L 6 , L 7 , L 8 , substantially constant.

Toutefois, avantageusement selon l'invention, la bande 7, 27, 47, 67 comporte, à chacun des sommets du polygone, un renflement 2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68 de largeurs respectives L'2, L'4, L'6, L'8, s'étendant radialement vers la spire interne PI, afin de former les parties S1, S2, S3, S4 du contour externe de la virole 5, 25, 45, 65 qui sont les plus éloignées du centre C de la virole 5, 25, 45, 65, le centre C étant formé par le centre du cercle inscrit dans l'ouverture de la virole 5, 25, 45, 65.However, advantageously according to the invention, the strip 7, 27, 47, 67 comprises, at each of the vertices of the polygon, a bulge 2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68 of respective widths L ' 2 , L' 4 , L ' 6 , L' 8 , extending radially towards the inner turn P I , to form the portions S 1 , S 2 , S 3 , S 4 of external outline of the shell 5, 25, 45, 65 which are furthest from the center C of the shell 5, 25, 45, 65, the center C being formed by the center of the circle inscribed in the opening of the shell 5 , 25, 45, 65.

Afin d'expliquer plus facilement l'invention, l'explication ci-après se focalise sur les modes de réalisation des figures 3, 8 et 9. Toutefois, les enseignements ci-après s'appliquent également au mode de réalisation de la figure 10 et plus généralement à un polygone comportant plus de trois côtés comme un quadrilatère tel, par exemple, qu'un losange ou un carré, un pentagone ou un hexagone, sans sortir du cadre de la présente description.In order to explain the invention more easily, the following explanation focuses on the embodiments of the figures 3 , 8 and 9 . However, the following teachings also apply to the embodiment of the figure 10 and more generally to a polygon having more than three sides such as a quadrilateral, such as a diamond or a square, a pentagon or a hexagon, without departing from the scope of the present description.

Ainsi, comme visible aux figures 3, 8 et 9, le point d'attache S1 entre la spire interne PI et la virole 5, 45, 65 est situé sur un 2, 52, 72 des renflements 2, 4, 8, 42, 44, 48, 62, 64, 68 de la virole 5, 45, 65. On remarque également que la virole 5, 45, 65 est symétrique par rapport à l'axe passant par le centre C de la virole 5, 45, 65 et le point d'attache S1.Thus, as visible figures 3 , 8 and 9 , the point of attachment S 1 between the inner turn P I and the ferrule 5, 45, 65 is situated on a 2, 52, 72 of the bulges 2, 4, 8, 42, 44, 48, 62, 64, 68 5, 45, 65. It is also noted that the ferrule 5, 45, 65 is symmetrical with respect to the axis passing through the center C of the ferrule 5, 45, 65 and the point of attachment S 1 .

De plus, selon l'invention, la distance entre le centre C de la virole 5, 45, 65 et l'extrémité S1, S2, S3 de chaque renflement 2, 4, 8, 42, 44, 48, 62, 64, 68 est sensiblement constante afin d'offrir un contour externe au niveau de chaque renflement 2, 4, 8, 42, 44, 48, 62, 64, 68 qui comporte deux parois 21-22, 41-42, 81-82, 421-422, 441-442, 481-482, 621-622, 641-642, 681-682 s'étendant axialement et sensiblement parallèlement entre elles mais également parallèlement par rapport au segment formé entre le centre C de la virole et l'extrémité S1, S2, S3 de chaque renflement 2, 4, 8, 42, 44, 48, 62, 64, 68 associé.In addition, according to the invention, the distance between the center C of the shell 5, 45, 65 and the end S 1 , S 2 , S 3 of each bulge 2, 4, 8, 42, 44, 48, 62 , 64, 68 is substantially constant to provide an outer contour at each bulge 2, 4, 8, 42, 44, 48, 62, 64, 68 which has two walls 2 1 -2 2 , 4 1 -4 2 , 8 1 -8 2 , 42 1 -42 2 , 44 1 -44 2 , 48 1 -48 2 , 62 1 -62 2 , 64 1 -64 2 , 68 1 -68 2 extending axially and substantially parallel between them but also parallel to the segment formed between the center C of the shell and the end S 1 , S 2 , S 3 of each bulge 2, 4, 8, 42, 44, 48, 62, 64, 68 associated .

On s'aperçoit, à la figure 3, que la distance entre les deux parois 21-22 du renflement 2 est moins grande que celles des parois 41-42, 81-82 respectivement des renflements 4 et 8 alors qu'aux figures 8 et 9, les distances entre les deux parois 421-422, 441-442, 481-482, 621-622, 641-642, 681-682 respectivement des renflements 42, 44, 48, 62, 64, 68 sont sensiblement constantes.We notice, at the figure 3 , that the distance between the two walls 2 1 -2 2 of the bulge 2 is smaller than those of the walls 4 1 -4 2 , 8 1 -8 2 respectively of the bulges 4 and 8 whereas in the figures 8 and 9 the distances between the two walls 42 1 -42 2 , 44 1 -44 2 , 48 1 -48 2 , 62 1 -62 2 , 64 1 -64 2 , 68 1 -68 2 bulges respectively 42, 44, 48 , 62, 64, 68 are substantially constant.

Ainsi, même si les renflements 2, 4, 8, 42, 44, 48, 62, 64, 68 ne sont pas pincés par la rondelle 10, ses deux parois 21-22, 41-42, 81-82, 421-422, 441-442, 481-482, 621-622, 641-642, 681-682 sensiblement parallèles sont orientées sensiblement orthogonalement par rapport à la paroi périphérique de la rondelle 10 ce qui évite avantageusement les égrisures sur la virole 5, 45, 65. On comprend, en effet, que si la bande 7, 47, 67 ne possédait pas ces renflements 2, 4, 8, 42, 44, 48, 62, 64, 68 comme visible à la figure 3 en traits interrompus, le bord de la rondelle 10 serait tangent avec le bord de la bande 7, 47, 67, c'est-à-dire l'un à l'aplomb de l'autre en risquant d'occasionner trop de contraintes localement.Thus, even if the bulges 2, 4, 8, 42, 44, 48, 62, 64, 68 are not gripped by the washer 10, its two walls 2 1 -2 2 , 4 1 -4 2 , 8 1 - 8 2 , 42 1 -42 2 , 44 1 -44 2 , 48 1 -48 2 , 62 1 -62 2 , 64 1 -64 2 , 68 1 -68 2 substantially parallel are oriented substantially orthogonal to the peripheral wall of the washer 10 which advantageously avoids the égrisures on the shell 5, 45, 65. It is understood, indeed, that if the strip 7, 47, 67 did not have these bulges 2, 4, 8, 42, 44, 48 , 62, 64, 68 as visible in the figure 3 in dashed lines, the edge of the washer 10 would be tangent with the edge of the strip 7, 47, 67, that is to say, one above the other with the risk of causing too many constraints locally.

Préférentiellement selon l'invention, la bande 7, 27, 47, 67 est cintrée vers le centre C de la virole 5, 25, 45, 65 entre chaque sommet du polygone afin de former au moins trois points de serrage Q1, Q2, Q3, Q4 agencés pour s'ajuster sur un axe 11, 11'. On s'aperçoit, à la figure 8, que la bande 47 est plus cintrée que les bandes 7, 27, 67 respectivement des figures 3, 9 et 10.Preferably according to the invention, the strip 7, 27, 47, 67 is bent towards the center C of the shell 5, 25, 45, 65 between each vertex of the polygon so as to form at least three clamping points Q 1 , Q 2 , Q 3 , Q 4 arranged to fit on an axis 11, 11 '. We notice, at the figure 8 , that the band 47 is more curved than the strips 7, 27, 67 respectively of the figures 3 , 9 and 10 .

De plus, préférentiellement selon l'invention, la bande 7, 27 comporte en outre un épaississement 2', 22' de largeur L"2 s'étendant radialement de la paroi interne de la bande 7, 27 vers le centre C de la virole 5, 25 au niveau du sommet du triangle comportant le point d'attache S1 afin d'éviter le déplacement du point d'attache S1 lors d'une déformation F1 de la bande 7, 27 occasionnée par la réception de l'axe 11, 11' de plus grande section que l'ouverture entre les points de serrage Q1, Q2, Q3, Q4. Toutefois, on s'aperçoit, aux figures 8 et 9, que la bande 47, 67 ne comporte pas un tel épaississement. On comprend donc que ce dernier ne constitue pas une caractéristique essentielle de l'invention.In addition, preferably according to the invention, the strip 7, 27 further comprises a thickening 2 ', 22' of width L " 2 extending radially from the inner wall of the strip 7, 27 towards the center C of the ferrule 5, 25 at the apex of the triangle having the point of attachment S 1 in order to avoid the displacement of the point of attachment S 1 during a deformation F 1 of the strip 7, 27 caused by the reception of the axis 11, 11 'larger than the opening between the clamping points Q 1 , Q 2 , Q 3 , Q 4 . figures 8 and 9 , that the band 47, 67 does not include such a thickening. It is therefore understood that the latter is not an essential feature of the invention.

Enfin, aux figures 3, 8 et 9, il est également visible que la bande 7, 47, 67 comporte, sur la portion 12, 52, 72 entre deux sommets du triangle qui comporte les renflements 4-8, 44-48 et 64-68 et qui est opposée au point d'attache S1 par rapport au centre C de la virole 5, 45, 65, un quatrième renflement 6, 46, 66 de largeur L'6 s'étendant radialement vers la spire interne PI afin de positionner le centre de gravité de la virole 5, 45, 65 au centre C de l'ouverture de la virole 5, 45, 65.Finally, figures 3 , 8 and 9 , it is also visible that the strip 7, 47, 67 comprises, on the portion 12, 52, 72 between two peaks of the triangle which has the bulges 4-8, 44-48 and 64-68 and which is opposite the point d S 1 attachment relative to the center C of the ferrule 5, 45, 65, a fourth bulge 6, 46, 66 of width L ' 6 extending radially towards the inner turn P I to position the center of gravity of the ferrule 5, 45, 65 at the center C of the opening of the ferrule 5, 45, 65.

Selon une alternative à l'épaississement 2', 22' afin d'éviter le déplacement du point d'attache S1 lors d'une déformation F1 de la bande 7, 27, 47, 67, il est également possible de faire varier la largeur de la bande 7, 27, 47, 67 entre les sommets du polygone, c'est-à-dire comporter une largeur différente ou une largeur non constante.According to an alternative to the thickening 2 ', 22' in order to avoid the displacement of the point of attachment S 1 during a deformation F 1 of the strip 7, 27, 47, 67, it is also possible to vary the width of the band 7, 27, 47, 67 between the vertices of the polygon, that is to say having a different width or a non-constant width.

La figure 9 montre un exemple de la largeur non constante. Ainsi, la virole 65 comporte une surépaisseur d'environ 10% localisée au niveau des largeurs L1 et L3, c'est-à-dire au niveau des points de serrage Q1, Q2, Q3, par rapport au reste de la bande 67, c'est-à-dire par rapport aux largeurs L2, L4, L5, L6, L7 et L8.The figure 9 shows an example of the non-constant width. Thus, the shell 65 has an allowance of about 10% localized at the widths L 1 and L 3 , that is to say at the points of clamping Q 1 , Q 2 , Q 3 , compared to the rest of the band 67, that is to say with respect to the widths L 2 , L 4 , L 5 , L 6 , L 7 and L 8 .

A titre d'exemple, dans le cas de la figure 3, si on n'utilise pas l'épaississement 2', la virole 5 se décentre vers la direction des 6h. Toutefois, pour une géométrie proche, on s'aperçoit, à la figure 8, que la bande 47 qui ne comporte pas un tel épaississement, ne subit pas le même décentrage. Une solution alternative à l'épaississement 2', 22' pour éviter le déplacement du point d'attache S1 lors d'une déformation F1 de la bande 7 pourrait alors consister à élargir la bande 7 au niveau L1, L3 et/ou affiner la bande 7 au niveau L5, L7 et/ou diminuer le volume du quatrième renflement 6 et/ou marquer le cintrage de la bande 7 (comme pour la virole 45).For example, in the case of the figure 3 , if the thickening 2 'is not used, the shell 5 is decentered towards the 6h direction. However, for a close geometry, one realizes, at the figure 8 , that the band 47 which does not include such a thickening, does not undergo the same decentering. An alternative solution to the thickening 2 ', 22' to avoid the displacement of the point of attachment S 1 during a deformation F 1 of the strip 7 could then consist in widening the strip 7 at the level L 1 , L 3 and / or refine the band 7 at the level L 5 , L 7 and / or decrease the volume of the fourth bulge 6 and / or mark the bending of the band 7 (as for the shell 45).

Plus généralement, suivant la forme du polygone prévu pour la virole 5, 25, 45, 65, la modification de la rigidité de cette dernière pour garder le centre du spiral 1 coaxial à son axe 11 peut se faire en modifiant l'épaisseur de la bande 7, 27, 47, 67 et/ou en modifiant la longueur de la bande 7, 27, 47, 67 entre les sommets du polygone et/ou en jouant sur la largeur des renflements 2, 4, 6, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68 ou des épaississements 2', 22' sur la bande 7, 27, 47, 67 et/ou en ajourant la bande 7, 27, 47, 67.More generally, according to the shape of the polygon provided for the ferrule 5, 25, 45, 65, the modification of the rigidity of the latter to keep the center of the spiral 1 coaxial with its axis 11 can be done by changing the thickness of the band 7, 27, 47, 67 and / or by changing the length of the strip 7, 27, 47, 67 between the polygon apices and / or by varying the width of the bulges 2, 4, 6, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68 or thickenings 2 ', 22' on the strip 7, 27, 47, 67 and / or by adding the strip 7, 27, 47, 67.

A la figure 3, on s'aperçoit également que la distance C-I1-L"2 est sensiblement égale aux distances C-I2 et C-I3 et que les distances L2-L'2, L4-L'4 et L8-L'8 sont sensiblement égales. Cela explique que les distances C-S1, C-S2 et C-S3 soient sensiblement égales à la figure 3 alors que cette égalité est plus immédiatement perceptible aux figures 8 à 10.To the figure 3 it can also be seen that the distance CI 1 -L " 2 is substantially equal to the distances CI 2 and CI 3 and that the distances L 2 -L ' 2 , L 4 -L' 4 and L 8 -L ' 8 are This explains why the distances CS 1 , CS 2 and CS 3 are substantially equal to the figure 3 whereas this equality is more immediately perceptible to Figures 8 to 10 .

Comme expliqué ci-dessus le spiral 1 peut ainsi être formé de manière nullement limitative à partir d'un matériau à base de silicium comme à partir de silicium monocristallin dopé ou non, de silicium polycristallin dopé ou non, de silicium monocristallin dopé ou non et revêtu d'un oxyde de silicium, de silicium polycristallin dopé ou non et revêtu d'un oxyde de silicium, d'oxyde de silicium, de quartz, de silice, de nitrure de silicium, de nitrure de silicium revêtu d'un oxyde de silicium, de carbure de silicium ou de carbure de silicium revêtu d'un oxyde de silicium, sans risque que le matériau soit brisé par une rondelle 10,10' lors du serrage élastique. Alternativement, le spiral 1 peut ainsi être formé de manière nullement limitative à partir de corindon monocristallin, de corindon polycristallin ou d'alumine.As explained above, the hairspring 1 can thus be formed in a manner that is in no way limitative from a silicon-based material such as doped or uncropped silicon monocrystalline silicon, doped or unpoped polycrystalline silicon, doped or unopened silicon monocrystalline silicon, and coated with a silicon oxide, doped polycrystalline silicon or not and coated with an oxide of silicon, silicon oxide, quartz, silica, silicon nitride, silicon nitride coated with an oxide of silicon, silicon carbide or silicon carbide coated with a silicon oxide, without risk that the material is broken by a washer 10,10 'during the elastic clamping. Alternatively, the spiral 1 can thus be formed in no way limiting from monocrystalline corundum, polycrystalline corundum or alumina.

Une telle rondelle 10, 10' est présenté aux figures 4 et 5. Dans une première alternative, la rondelle 10 est anneau parfait, c'est-à-dire un disque avec une ouverture 18, comportant une face supérieure 19 et une face inférieure 16 qui peuvent être utilisées pour serrer le spiral 1. De plus, les arêtes de la rondelle 10 peuvent comporter des biseaux 15 destinés à éviter les égrisures et les bavures à la fabrication.Such a washer 10, 10 'is presented to Figures 4 and 5 . In a first alternative, the washer 10 is a perfect ring, that is to say a disc with an opening 18, having an upper face 19 and a lower face 16 which can be used to tighten the hairspring 1. Moreover, The edges of the washer 10 may include bevels 15 to avoid grits and smudges during manufacture.

Dans une deuxième alternative, la rondelle 10' est un anneau, c'est-à-dire un disque avec une ouverture 18', comportant une face supérieure 19' et une face inférieure 16'. La face supérieure 19' communique avec l'ouverture 18' à l'aide d'une surface conique 17' et est utilisée pour serrer le spiral 1. De plus, les arêtes de la rondelle 10' peuvent comporter des biseaux 15' destinés à éviter les égrisures.In a second alternative, the washer 10 'is a ring, that is to say a disc with an opening 18', having an upper face 19 'and a lower face 16'. The upper face 19 'communicates with the opening 18' with the aid of a conical surface 17 'and is used to tighten the hairspring 1. In addition, the edges of the washer 10' may comprise bevels 15 'for avoid grittiness.

A titre préférentiel, le spiral 1 comporte une spire interne PI suivant une courbe du type Grossmann et une spire externe PE partiellement épaissie afin d'améliorer la concentricité de sa contraction et de son expansion.Preferably, the hairspring 1 comprises an internal turn P I following a Grossmann type curve and an outer turn P E partially thickened to improve the concentricity of its contraction and expansion.

Il est également préféré que le spiral 1 comporte en outre une couche résistante et imperméable à l'humidité afin de le rendre moins sensible aux variations climatiques.It is also preferred that the hairspring 1 further comprises a resistant and moisture-impermeable layer to make it less sensitive to climatic variations.

Comme visible aux figures 6 et 7, l'invention se rapporte également à un résonateur 21, 21' pour une pièce d'horlogerie comportant un axe 11, 11' sur lequel est ajusté un balancier 13, 13' et le spiral 1 selon l'une des variantes précédentes.As visible to Figures 6 and 7 the invention also relates to a resonator 21, 21 'for a timepiece comprising an axis 11, 11' on which is fitted a rocker 13, 13 'and the hairspring 1 according to one of the preceding variants.

Ainsi, dans un premier mode de réalisation illustré à la figure 6, le résonateur 21 comporte le spiral 1 qui est ajusté sur l'axe 11 entre une rondelle élastique 10 et le balancier 13. Alors que, dans un deuxième mode de réalisation illustré à la figure 7, le résonateur 21' comporte le spiral 1 qui est ajusté sur l'axe 11' entre une rondelle élastique 10 et une portée 14' de l'axe 11'.Thus, in a first embodiment illustrated in FIG. figure 6 , the resonator 21 comprises the hairspring 1 which is fitted on the axis 11 between an elastic washer 10 and the rocker 13. Whereas, in a second embodiment illustrated in FIG. figure 7 , the resonator 21 'comprises the hairspring 1 which is fitted on the axis 11' between an elastic washer 10 and a bearing surface 14 'of the shaft 11'.

Dans les deux modes de réalisation, les deux alternatives de rondelle élastique 10, 10' peuvent être utilisées. Ainsi, la rondelle 10, 10' serre principalement le spiral 1 au niveau F2 des sommets de la bande 7, 27, 47, 67 de sa virole 5, 25, 45, 65 mais également sur le quatrième renflement 6, 26, 46, 66.In both embodiments, the two elastic washer alternatives 10, 10 'can be used. Thus, the washer 10, 10 'mainly clamps the hairspring 1 at the level F 2 of the peaks of the band 7, 27, 47, 67 of its shell 5, 25, 45, 65 but also on the fourth bulge 6, 26, 46 , 66.

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 formes et les dimensions du spiral 1 peuvent ne sauraient se limiter aux exemples des figures 1 à 10. En effet, suivant les applications, les formes et les dimensions du spiral 1 peuvent différer notamment au niveau des renflements 2, 4, 6, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68 et/ou de la bande 7, 27, 47, 67 et/ou de l'épaississement 2', 22' et/ou du cintrage de la bande 7, 27, 47, 67.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 shapes and dimensions of the hairspring 1 can not be limited to the examples of the Figures 1 to 10 . In fact, according to the applications, the shapes and the dimensions of the hairspring 1 can differ notably at the level of the bulges 2, 4, 6, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68 and or the strip 7, 27, 47, 67 and / or the thickening 2 ', 22' and / or the bending of the strip 7, 27, 47, 67.

Claims (12)

Spiral (1) comportant une lame (3) enroulée sur elle-même selon plusieurs spires (PI, PE), la spire interne (PI) étant venue de forme avec une virole (5, 25, 45, 65) comportant une bande (7, 27, 47, 67) s'étendant sensiblement sous forme d'un polygone caractérisé en ce que la bande (7, 27, 47, 67) comporte, à chacun des sommets dudit polygone, un renflement (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68) s'étendant radialement vers la spire interne (PI), le point d'attache (S1) entre la spire interne (PI) et la virole (5, 25, 45, 65) étant situé sur un des renflements (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68) de la virole (5, 25, 45, 65) qui est symétrique par rapport à l'axe passant par le centre (C) de la virole (5, 25, 45, 65) et ledit point d'attache et en ce que la distance entre le centre (C) de la virole (5, 25, 45, 65) et l'extrémité (S1, S2, S3, S4) de chaque renflement (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68) est sensiblement constante afin d'offrir un contour externe au niveau de chaque renflement (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68) qui comporte deux parois (21-22, 41-42, 81-82, 421-422, 441-442, 481-482, 621-622, 641-642, 681-682) s'étendant axialement sensiblement parallèlement entre elles par rapport au segment formé entre le centre (C) de la virole (5, 25, 45, 65) et l'extrémité (S1, S2, S3, S4) de dudit renflement (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68) et en ce que la bande (7, 27, 47, 67) comporte une largeur non constante entre chacun des sommets dudit polygone.Spiral (1) comprising a blade (3) wound on itself in several turns (P I , P E ), the inner coil (P I ) being shaped with a ferrule (5, 25, 45, 65) comprising a strip (7, 27, 47, 67) extending substantially in the form of a polygon characterized in that the strip (7, 27, 47, 67) comprises, at each of the vertices of said polygon, a bulge (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68) extending radially towards the inner turn (P I ), the point of attachment (S 1 ) between the inner turn (P I ) and the ferrule (5, 25, 45, 65) being located on one of the bulges (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68) of the shell (5, 25, 45, 65) which is symmetrical with respect to the axis passing through the center (C) of the shell (5, 25, 45, 65) and said point of attachment and in that the distance between the center (C) of the ferrule (5, 25, 45, 65) and the end (S 1 , S 2 , S 3 , S 4 ) of each bulge (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68) is sensibly nt constant to provide an outer contour at each bulge (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68) which has two walls (2 1 -2 2 , 4 1 -4 2 , 8 1 -8 2 , 42 1 -42 2 , 44 1 -44 2 , 48 1 -48 2 , 62 1 -62 2 , 64 1 -64 2 , 68 1 -68 2 ) extending axially substantially parallel to each other with respect to the segment formed between the center (C) of the shell (5, 25, 45, 65) and the end (S 1 , S 2 , S 3 , S 4 ) of said bulge (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68) and that the band (7, 27, 47, 67) has a non-constant width between each vertices of said polygon. Spiral (1) selon la revendication précédente, caractérisé en ce que la bande (7, 27, 47, 67) est surépaissie au niveau de points (Q1, Q2, Q3, Q4) de serrage agencés pour s'ajuster sur un axe (11, 11').Spiral (1) according to the preceding claim, characterized in that the strip (7, 27, 47, 67) is thickened at points (Q 1 , Q 2 , Q 3 , Q 4 ) clamping arranged to adjust on an axis (11, 11 '). Spiral (1) selon la revendication précédente, caractérisé en ce que la bande (7, 27, 47, 67) est surépaissie d'environ 10% au niveau des points (Q1, Q2, Q3, Q4) de serrage par rapport au reste de la bande (7, 27, 47, 67).Spiral (1) according to the preceding claim, characterized in that the strip (7, 27, 47, 67) is thickened by about 10% at the points (Q 1 , Q 2 , Q 3 , Q 4 ) of clamping compared to the rest of the band (7, 27, 47, 67). Spiral (1) selon l'une des revendications précédentes, caractérisé en ce que les distances entre lesdites deux parois (21-22, 41-42, 81-82, 421-422, 441-442, 481-482, 621-622, 641-642, 681-682) de chaque renflements (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68) sont sensiblement constantes.Spiral (1) according to one of the preceding claims, characterized in that the distances between said two walls (2 1 -2 2 , 4 1 -4 2 , 8 1 -8 2 , 42 1 -42 2 , 44 1 - 44 2 , 48 1 -48 2 , 62 1 -62 2 , 64 1 -64 2 , 68 1 -68 2 ) of each bulge (2, 4, 8, 22, 24, 26, 28, 42, 44, 48 , 62, 64, 68) are substantially constant. Spiral (1) selon l'une des revendications précédentes, caractérisé en ce que la bande (7, 27, 47, 67) s'étend sensiblement sous forme d'un triangle, d'un quadrilatère, d'un pentagone ou d'un hexagone.Spiral (1) according to one of the preceding claims, characterized in that the strip (7, 27, 47, 67) extends substantially in the form of a triangle, a quadrilateral, a pentagon or a hexagon. Spiral (1) selon l'une des revendications précédentes, caractérisé en ce que le spiral (1) comporte une spire interne (PI) suivant une courbe du type Grossmann et une spire externe (PE) partiellement épaissie.Spiral (1) according to one of the preceding claims, characterized in that the spiral (1) comprises an inner turn (P I ) following a Grossmann type curve and a partially thickened outer turn (P E ). Spiral (1) selon l'une des revendications précédentes, caractérisé en ce qu'il est formé à base de silicium.Spiral (1) according to one of the preceding claims, characterized in that it is formed based on silicon. Spiral (1) selon la revendication précédente, caractérisé en ce qu'il comporte en outre une couche résistante et imperméable à l'humidité afin de rendre le spiral (1) moins sensible aux variations climatiques.Spiral (1) according to the preceding claim, characterized in that it further comprises a resistant layer and impermeable to moisture in order to make the spiral (1) less sensitive to climatic variations. Résonateur (21, 21') pour une pièce d'horlogerie caractérisé en ce qu'il comporte un axe (11, 11') sur lequel est ajusté un balancier (13, 13') et un spiral (1) selon l'une des revendications précédentes.Resonator (21, 21 ') for a timepiece, characterized in that it comprises an axis (11, 11') on which is fitted a rocker (13, 13 ') and a spiral (1) according to one of the preceding claims. Résonateur (21') selon la revendication précédente, caractérisé en ce que le spiral (1) est ajusté sur l'axe entre une rondelle (10, 10') élastique et une portée (14') de l'axe (11').Resonator (21 ') according to the preceding claim, characterized in that the hairspring (1) is fitted on the axis between an elastic washer (10, 10') and a bearing surface (14 ') of the axis (11') . Résonateur (21) selon la revendication 10, caractérisé en ce que le spiral (1) est ajusté sur l'axe (11) entre une rondelle (10, 10') élastique et le balancier (13).Resonator (21) according to claim 10, characterized in that the spiral (1) is fitted on the axis (11) between an elastic washer (10, 10 ') and the rocker (13). Résonateur (21, 21') selon la revendication 11 ou 12, caractérisé en ce que la rondelle (10, 10') élastique serre principalement le spiral (1) au niveau des sommets de la bande (7, 27) de sa virole (5, 25).Resonator (21, 21 ') according to claim 11 or 12, characterized in that the spring washer (10, 10') tightens mainly the spiral (1) at the vertices of the band (7, 27) of its ferrule ( 5, 25).
EP16172457.0A 2014-03-05 2015-02-06 Hairspring intended for being clamped by a spring washer Withdrawn EP3098669A1 (en)

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EP16172457.0A EP3098669A1 (en) 2014-03-05 2015-02-06 Hairspring intended for being clamped by a spring washer

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EP14157858 2014-03-05
EP16172457.0A EP3098669A1 (en) 2014-03-05 2015-02-06 Hairspring intended for being clamped by a spring washer
EP15154081.2A EP2916177B1 (en) 2014-03-05 2015-02-06 Hairspring intended for being clamped by a spring washer

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EP15154081.2A Division EP2916177B1 (en) 2014-03-05 2015-02-06 Hairspring intended for being clamped by a spring washer

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EP16172457.0A Withdrawn EP3098669A1 (en) 2014-03-05 2015-02-06 Hairspring intended for being clamped by a spring washer
EP15176591.4A Active EP2985659B1 (en) 2014-03-05 2015-02-06 Hairspring intended for being clamped by a spring washer

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EP (3) EP2916177B1 (en)
JP (1) JP6026576B2 (en)
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JP2015169656A (en) 2015-09-28
EP2985659B1 (en) 2020-04-29
RU2681226C2 (en) 2019-03-05
RU2015107678A (en) 2016-09-27
CN104898398A (en) 2015-09-09
EP2985659A2 (en) 2016-02-17
US20150253733A1 (en) 2015-09-10
US9983548B2 (en) 2018-05-29
CN104898398B (en) 2017-09-15
JP6026576B2 (en) 2016-11-16
RU2015107678A3 (en) 2018-10-23
EP2916177B1 (en) 2018-11-07
TWI659278B (en) 2019-05-11
EP2916177A1 (en) 2015-09-09
EP2985659A3 (en) 2016-03-23
TW201541203A (en) 2015-11-01
HK1214658A1 (en) 2016-07-29

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