EP2985659B1 - 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
EP2985659B1
EP2985659B1 EP15176591.4A EP15176591A EP2985659B1 EP 2985659 B1 EP2985659 B1 EP 2985659B1 EP 15176591 A EP15176591 A EP 15176591A EP 2985659 B1 EP2985659 B1 EP 2985659B1
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EP
European Patent Office
Prior art keywords
resonator
balance spring
hairspring
washer
strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15176591.4A
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German (de)
French (fr)
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EP2985659A2 (en
EP2985659A3 (en
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
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Nivarox Far SA
Nivarox SA
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Priority to EP15176591.4A priority Critical patent/EP2985659B1/en
Publication of EP2985659A2 publication Critical patent/EP2985659A2/en
Publication of EP2985659A3 publication Critical patent/EP2985659A3/en
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Publication of EP2985659B1 publication Critical patent/EP2985659B1/en
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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • 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 resonator whose hairspring is suitable for an assembly system comprising a hairspring blocked elastically on an axis by a washer.
  • the object of the present invention is to overcome all or part of the drawbacks mentioned above by proposing a resonator with a hairspring, the monobloc ferrule of which is adapted to be mounted using the above-mentioned assembly system.
  • the invention relates to a resonator for a timepiece comprising an axis on which are adjusted a balance and a hairspring characterized in that the hairspring comprise a blade wound on itself according to several turns, the turn internal having come in shape with a ferrule comprising a strip extending substantially in the form of a polygon and comprising, at each of the vertices of said polygon, a bulge extending radially towards the internal turn, and in that the resonator further comprises an elastic washer which mainly clamps the hairspring by pinching at the tops of the strip of said polygon by letting the bulges protrude from the side of the washer.
  • the external contour is optimized so that the elastic washer mainly clamps the hairspring at the level of the tops of the band of its ferrule. Indeed, even if the bulges are not pinched by the washer, its two substantially parallel walls oriented substantially orthogonally to the peripheral wall of the washer advantageously avoid scratches.
  • the invention relates to a hairspring, the monobloc ferrule of which is adapted to one intended for a part whose material does not include a usable plastic area, that is to say with a very limited plastic area. , with a member comprising another type of material.
  • this assembly is made necessary by the growing share held by fragile materials such as those based on silicon such as monocrystalline (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.
  • the hairspring 1 comprises a blade 3 wound on itself according to several turns, the internal turn P I having come in shape with a ferrule 5, 25, 45, 65 comprising 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 a 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 internal coil P I , in order to form the parts S 1 , S 2 , S 3 , S 4 of the outer contour 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 attachment point S 1 between the internal turn P I and the shell 5, 45, 65 is located on a 2, 52, 72 of the bulges 2, 4, 8, 42, 44, 48, 62, 64, 68 of the shell 5, 45, 65. It is also noted that the shell 5, 45, 65 is symmetrical with respect to the axis passing through the center C of the shell 5, 45, 65 and the attachment point 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 in order to offer an external contour at the level of 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 less than that of the walls 4 1 -4 2 , 8 1 -8 2 respectively of the bulges 4 and 8 while at 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 respectively bulges 42, 44, 48 , 62, 64, 68 are substantially constant.
  • the strip 7, 27, 47, 67 is curved towards the center C of the shell 5, 25, 45, 65 between each vertex of the polygon in order to form at least three tightening points Q 1 , Q 2 , Q 3 , Q 4 arranged to fit on an axis 11, 11 '.
  • the strip 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 internal wall of the strip 7, 27 towards the center C of the shell. 5, 25 at the top of the triangle comprising the attachment point S 1 in order to avoid displacement of the attachment point S 1 during a deformation F 1 of the strip 7, 27 caused by the reception of the axis 11, 11 ′ of larger cross section than the opening between the clamping points Q 1 , Q 2 , Q 3 , Q 4.
  • the strip 47, 67 does not include such thickening. It is therefore understood that the latter does not constitute an essential characteristic of the invention.
  • the strip 7, 47, 67 comprises, on the portion 12, 52, 72 between two vertices of the triangle which has the bulges 4-8, 44-48 and 64-68 and which is opposite to the point d 'attachment S 1 relative to the center C of the shell 5, 45, 65, a fourth bulge 6, 46, 66 of width L' 6 extending radially towards the internal turn P I in order to position the center of gravity of the ferrule 5, 45, 65 in the center C of the opening of the ferrule 5, 45, 65.
  • the thickening 2 ', 22' in order to avoid displacement of the attachment point S 1 during a deformation F 1 of the strip 7, 27, 47, 67, it is also possible to vary the width of the strip 7, 27, 47, 67 between the vertices of the polygon, that is to say have a different width or a non-constant width.
  • the figure 9 shows an example of the non-constant width.
  • the ferrule 65 has an allowance of approximately 10% located at the widths L 1 and L 3 , that is to say at the clamping points Q 1 , Q 2 , Q 3 , relative to the rest of the strip 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 balance spring 1 coaxial with its axis 11 can be done by modifying the thickness of the strip 7, 27, 47, 67 and / or by modifying the length of strip 7, 27, 47, 67 between the vertices of the polygon and / or by playing on 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 cutting the tape 7, 27, 47, 67.
  • the hairspring 1 can thus be formed in a nonlimiting manner from a silicon-based material such as from doped or not doped monocrystalline silicon, doped or not doped polycrystalline silicon, doped or not doped monocrystalline silicon and coated with silicon oxide, doped or undoped polycrystalline silicon and coated with silicon oxide, silicon oxide, quartz, silica, silicon nitride, silicon nitride coated with silicon oxide silicon, silicon carbide or silicon carbide coated with a silicon oxide, without risk that the material is broken by a washer 10,10 'during elastic tightening.
  • the hairspring 1 can thus be formed in a nonlimiting manner from monocrystalline corundum, polycrystalline corundum or alumina.
  • the washer 10 is a perfect ring, that is to say a disc with an opening 18, comprising an upper face 19 and a lower face 16 which can be used to tighten the hairspring 1.
  • the washer 10 edges may have bevels 15 intended to prevent scratches and burrs during manufacture.
  • the washer 10 ' is a ring, that is to say a disc with an opening 18', comprising an upper face 19 'and a lower face 16'.
  • the upper face 19 ' communicates with the opening 18' using a conical surface 17 'and is used to tighten the hairspring 1.
  • the edges of the washer 10 ′ may include bevels 15 ′ intended to prevent scratches.
  • the hairspring 1 comprises an internal turn P I along a curve of the Grossmann type and an external turn P E partially thickened in order to improve the concentricity of its contraction and of its expansion.
  • the hairspring 1 also has a resistant and impermeable layer against humidity in order 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 adjusted a balance 13, 13 'and the hairspring 1 according to one of the preceding variants.
  • the resonator 21 comprises the hairspring 1 which is adjusted on the axis 11 between an elastic washer 10 and the balance 13. While, in a second embodiment illustrated in figure 7 , the resonator 21 'comprises the hairspring 1 which is adjusted on the axis 11' between an elastic washer 10 and a bearing 14 'of the axis 11'.
  • the two alternatives of elastic washer 10, 10 ′ can be used.
  • the washer 10, 10 ′ mainly clamps the hairspring 1 at level F 2 of the tops of the strip 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 example illustrated but is capable of various variants and modifications which will appear to those skilled in the art.
  • the shapes and dimensions of hairspring 1 cannot be limited to the examples of Figures 1 to 10 .
  • the shapes and dimensions of the hairspring 1 may differ in particular 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)
  • Dry Shavers And Clippers (AREA)
  • Toys (AREA)
  • Prostheses (AREA)

Description

Domaine de l'inventionField of the invention

L'invention se rapporte à un résonateur dont le spiral est adapté à un système d'assemblage comportant un spiral bloqué élastiquement sur un axe par une rondelle.The invention relates to a resonator whose hairspring is suitable for an assembly system comprising a hairspring blocked elastically on an axis by a washer.

Arrière-plan de l'inventionInvention background

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 celles divulguées dans les documents EP 2 184 653 et EP 1 868 045 , 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 silicon-based hairspring are generally joined by gluing. Thus a monobloc ferrule with the hairspring, such as those disclosed in the documents EP 2,184,653 and EP 1 868 045 , is adjusted on an axis then glued at its contact points. Such an operation requires extreme fineness 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 résonateur avec un spiral dont la virole monobloc est adaptée pour être montée à l'aide du système d'assemblage sus-dit.The object of the present invention is to overcome all or part of the drawbacks mentioned above by proposing a resonator with a hairspring, the monobloc ferrule of which is adapted to be mounted using the above-mentioned assembly system.

A cet effet, l'invention se rapporte à un résonateur pour une pièce d'horlogerie comportant un axe sur lequel sont ajustés un balancier et un spiral caractérisé en ce que le spiral comportent 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 et comportant, à chacun des sommets dudit polygone, un renflement s'étendant radialement vers la spire interne, et en ce que le résonateur comporte en outre une rondelle élastique qui serre principalement le spiral par pincement au niveau des sommets de la bande dudit polygone en laissant les renflements saillir du flanc de la rondelle.To this end, the invention relates to a resonator for a timepiece comprising an axis on which are adjusted a balance and a hairspring characterized in that the hairspring comprise a blade wound on itself according to several turns, the turn internal having come in shape with a ferrule comprising a strip extending substantially in the form of a polygon and comprising, at each of the vertices of said polygon, a bulge extending radially towards the internal turn, and in that the resonator further comprises an elastic washer which mainly clamps the hairspring by pinching at the tops of the strip of said polygon by letting the bulges protrude from the side of the washer.

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 external contour is optimized so that the elastic washer mainly clamps the hairspring at the level of the tops of the band of its ferrule. Indeed, even if the bulges are not pinched by the washer, its two substantially parallel walls oriented substantially orthogonally to the peripheral wall of the washer advantageously avoid scratches.

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

  • chaque renflement comporte deux parois s'étendant axialement sensiblement parallèlement entre elles par rapport au segment formé entre le centre de la virole et l'extrémité dudit renflement ;
  • les distances entre lesdites deux parois de chaque renflement sont sensiblement constantes ;
  • la bande de la virole 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 ;
  • 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.
In accordance with other advantageous embodiments of the invention:
  • each bulge has two walls extending axially substantially parallel to each other relative to the segment formed between the center of the shell and the end of said bulge;
  • the distances between said two walls of each bulge are substantially constant;
  • the band of the ferrule extends substantially in the form of a triangle, a quadrilateral, a pentagon or a hexagon;
  • the hairspring has an internal turn following a Grossmann type curve and a partially thickened external turn;
  • the hairspring is formed on the basis of silicon;
  • the hairspring also has a resistant and moisture-impermeable layer in order to make the hairspring less sensitive to climatic variations;
  • the hairspring is adjusted on the axis between an elastic washer and a bearing of the axis;
  • the balance spring is adjusted on the axis between an elastic washer and the balance.

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 given below, by way of indication and in no way limitative, 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 representation seen from above 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 a resonator according to the invention;
  • the figure 8 is a representation seen from above of a ferrule according to a second embodiment of the invention;
  • the figure 9 is a representation seen from above of a ferrule according to a third embodiment of the invention;
  • the figure 10 is a representation seen from above of a ferrule according to a fourth embodiment of the invention.

Description détaillée des modes de réalisation préférésDetailed description of preferred embodiments

Comme expliqué ci-dessus, l'invention se rapporte à un spiral dont la virole monobloc est adaptée à un 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 hairspring, the monobloc ferrule of which is adapted to one intended for a part whose material does not include a usable plastic area, that is to say with a very limited 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 held by fragile materials such as those based on silicon such as monocrystalline (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.

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 the usual steel axes, the manufacture of which is controlled, is a constraint which is difficult to reconcile with the use of parts not comprising a plastic domain. Indeed, during tests carried out, the driving of a steel axis is impossible and systematically breaks fragile parts, that is to say having no or a very small usable plastic area. For example, it appeared that the shear generated by the entry of the metal axis in the opening of a silicon part systematically breaks the latter.

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 according to several turns, the internal turn P I having come in shape with a ferrule 5, 25, 45, 65 comprising a strip 7, 27, 47, 67 extending substantially in the form of a polygon. As shown 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 a 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 internal coil P I , in order to form the parts S 1 , S 2 , S 3 , S 4 of the outer contour 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 explanation below focuses on the embodiments of the figures 3 , 8 and 9 . However, the following lessons also apply to the embodiment of the figure 10 and more generally to a polygon comprising more than three sides such as a quadrilateral such as, for example, a rhombus or a square, a pentagon or a hexagon, without going beyond the scope of this 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.So, as visible to figures 3 , 8 and 9 , the attachment point S 1 between the internal turn P I and the shell 5, 45, 65 is located on a 2, 52, 72 of the bulges 2, 4, 8, 42, 44, 48, 62, 64, 68 of the shell 5, 45, 65. It is also noted that the shell 5, 45, 65 is symmetrical with respect to the axis passing through the center C of the shell 5, 45, 65 and the attachment point 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 in order to offer an external contour at the level of 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 realize, at the figure 3 , that the distance between the two walls 2 1 -2 2 of the bulge 2 is less than that of the walls 4 1 -4 2 , 8 1 -8 2 respectively of the bulges 4 and 8 while at 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 respectively bulges 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 pinched 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 orthogonally to the peripheral wall washer 10 which advantageously avoids scratches on the shell 5, 45, 65. It is understood, in fact, that if the strip 7, 47, 67 did not have these bulges 2, 4, 8, 42, 44, 48 , 62, 64, 68 as visible at 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 directly above the other, risking 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 curved towards the center C of the shell 5, 25, 45, 65 between each vertex of the polygon in order to form at least three tightening points Q 1 , Q 2 , Q 3 , Q 4 arranged to fit on an axis 11, 11 '. We realize, at the figure 8 , that the strip 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 internal wall of the strip 7, 27 towards the center C of the shell. 5, 25 at the top of the triangle comprising the attachment point S 1 in order to avoid displacement of the attachment point S 1 during a deformation F 1 of the strip 7, 27 caused by the reception of the axis 11, 11 ′ of larger cross section than the opening between the clamping points Q 1 , Q 2 , Q 3 , Q 4. However, we can see figures 8 and 9 , that the strip 47, 67 does not include such thickening. It is therefore understood that the latter does not constitute an essential characteristic 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, to figures 3 , 8 and 9 , it is also visible that the strip 7, 47, 67 comprises, on the portion 12, 52, 72 between two vertices of the triangle which has the bulges 4-8, 44-48 and 64-68 and which is opposite to the point d 'attachment S 1 relative to the center C of the shell 5, 45, 65, a fourth bulge 6, 46, 66 of width L' 6 extending radially towards the internal turn P I in order to position the center of gravity of the ferrule 5, 45, 65 in 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 displacement of the attachment point S 1 during a deformation F 1 of the strip 7, 27, 47, 67, it is also possible to vary the width of the strip 7, 27, 47, 67 between the vertices of the polygon, that is to say have 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 ferrule 65 has an allowance of approximately 10% located at the widths L 1 and L 3 , that is to say at the clamping points Q 1 , Q 2 , Q 3 , relative to the rest of the strip 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 offset towards the 6 o'clock direction. However, for close geometry, we can see, at the figure 8 , that the strip 47 which does not include such thickening, does not undergo the same decentering. An alternative solution to the thickening 2 ', 22' to avoid displacement of the attachment point 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 strip 7 at level L 5 , L 7 and / or reduce the volume of the fourth bulge 6 and / or mark the bending of the strip 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, depending on the shape of the polygon provided for the shell 5, 25, 45, 65, the modification of the rigidity of the latter to keep the center of the balance spring 1 coaxial with its axis 11 can be done by modifying the thickness of the strip 7, 27, 47, 67 and / or by modifying the length of strip 7, 27, 47, 67 between the vertices of the polygon and / or by playing on 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 cutting the tape 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 , we also see 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 substantially equal. 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 nonlimiting manner from a silicon-based material such as from doped or not doped monocrystalline silicon, doped or not doped polycrystalline silicon, doped or not doped monocrystalline silicon and coated with silicon oxide, doped or undoped polycrystalline silicon and coated with silicon oxide, silicon oxide, quartz, silica, silicon nitride, silicon nitride coated with silicon oxide silicon, silicon carbide or silicon carbide coated with a silicon oxide, without risk that the material is broken by a washer 10,10 'during elastic tightening. Alternatively, the hairspring 1 can thus be formed in a nonlimiting manner 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, comprising an upper face 19 and a lower face 16 which can be used to tighten the hairspring 1. In addition, the washer 10 edges may have bevels 15 intended to prevent scratches and burrs 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', comprising an upper face 19 'and a lower face 16'. The upper face 19 'communicates with the opening 18' using a conical surface 17 'and is used to tighten the hairspring 1. In addition, the edges of the washer 10 ′ may include bevels 15 ′ intended to prevent scratches.

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 along a curve of the Grossmann type and an external turn P E partially thickened in order to improve the concentricity of its contraction and of its 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 also has a resistant and impermeable layer against humidity in order 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 adjusted a balance 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 the figure 6 , the resonator 21 comprises the hairspring 1 which is adjusted on the axis 11 between an elastic washer 10 and the balance 13. While, in a second embodiment illustrated in figure 7 , the resonator 21 'comprises the hairspring 1 which is adjusted on the axis 11' between an elastic washer 10 and a bearing 14 'of the axis 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 the two embodiments, the two alternatives of elastic washer 10, 10 ′ can be used. Thus, the washer 10, 10 ′ mainly clamps the hairspring 1 at level F 2 of the tops of the strip 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 example illustrated but is capable of various variants and modifications which will appear to those skilled in the art. In particular, the shapes and dimensions of hairspring 1 cannot be limited to the examples of Figures 1 to 10 . Indeed, depending on the applications, the shapes and dimensions of the hairspring 1 may differ in particular 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 (9)

  1. Resonator (21, 21') for a timepiece including a staff (11, 11') onto which are fitted a balance (13, 13') and a balance spring (1) including a strip (3) wound around itself into several coils (PI, PE), the inner coil (PI) being integral with a collet (5, 25, 45, 65) including a band (7, 27, 47, 67) extending substantially in the form of a polygon, the band (7, 27, 47, 67) includes, at each vertex of said polygon, a bulging portion (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68) extending radially towards the inner coil (PI) and characterised in that the resonator further includes a resilient washer (10, 10') which mainly clamps the balance spring by exerting an axial load by squeezing at the vertices of the band (7, 27, 47, 67) of said polygon while allowing the bulging portions (2, 4, 8, 42, 44, 48, 62, 64, 68) to protrude from the flank of the washer (10, 10').
  2. Resonator (21, 21') according to the preceding claim, characterised in that each bulging portion (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68) includes two walls (21-22, 41-42, 81-82, 421-422, 441-442, 481-482, 621-622, 641-642, 681-682) extending axially substantially parallel to each other relative to the segment formed between the centre (C) of the collet (5, 25, 45, 65) and the end (S1, S2, S3, S4) of said bulging portion (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68).
  3. Resonator (21, 21') according to claim 1 or 2, characterised in that the distances between said two walls (21-22, 41-42, 81-82, 421-422, 441-442, 481-482, 621-622, 641-642, 681-682) of each bulging portion (2, 4, 8, 22, 24, 26, 28, 42, 44, 48, 62, 64, 68) are substantially constant.
  4. Resonator (21, 21') according to one of the preceding claims, characterised in that the band (7, 27, 47, 67) of the collet (5, 25, 45, 65) extends substantially in the form of a triangle, a quadrilateral, a pentagon or a hexagon.
  5. Resonator (21, 21') according to one of the preceding claims, characterised in that the balance spring (1) includes an inner coil (PI) in a Grossmann curve and a partially thickened outer coil (PE).
  6. Resonator (21, 21') according to one of the preceding claims, characterised in that the balance spring (1) is formed from a silicon-based material.
  7. Resonator (21, 21') according to one of the preceding claims, characterised in that the balance spring further includes a resistant, damp-proof layer to make the balance spring (1) less sensitive to climatic variations.
  8. Resonator (21, 21') according to one of the preceding claims, characterised in that the balance spring (1) is fitted onto the staff between a resilient washer (10, 10') and a shoulder (14') of the staff (11').
  9. Resonator (21, 21') according to one of claims 1 to 7, characterised in that the balance spring (1) is fitted onto the staff (11) between a resilient washer (10, 10') and the balance (13).
EP15176591.4A 2014-03-05 2015-02-06 Hairspring intended for being clamped by a spring washer Active EP2985659B1 (en)

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EP14157858 2014-03-05
EP15176591.4A EP2985659B1 (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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EP2985659A3 EP2985659A3 (en) 2016-03-23
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EP16172457.0A Withdrawn EP3098669A1 (en) 2014-03-05 2015-02-06 Hairspring intended for being clamped by a spring washer
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US (1) US9983548B2 (en)
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JP (1) JP6026576B2 (en)
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EP3627234A1 (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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Also Published As

Publication number Publication date
EP2916177B1 (en) 2018-11-07
RU2015107678A3 (en) 2018-10-23
JP2015169656A (en) 2015-09-28
EP3098669A1 (en) 2016-11-30
CN104898398B (en) 2017-09-15
RU2681226C2 (en) 2019-03-05
US9983548B2 (en) 2018-05-29
JP6026576B2 (en) 2016-11-16
TW201541203A (en) 2015-11-01
RU2015107678A (en) 2016-09-27
US20150253733A1 (en) 2015-09-10
TWI659278B (en) 2019-05-11
CN104898398A (en) 2015-09-09
EP2985659A2 (en) 2016-02-17
EP2916177A1 (en) 2015-09-09
EP2985659A3 (en) 2016-03-23
HK1214658A1 (en) 2016-07-29

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