EP1780611A2 - Regulating device for a timepiece - Google Patents

Regulating device for a timepiece Download PDF

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Publication number
EP1780611A2
EP1780611A2 EP06021172A EP06021172A EP1780611A2 EP 1780611 A2 EP1780611 A2 EP 1780611A2 EP 06021172 A EP06021172 A EP 06021172A EP 06021172 A EP06021172 A EP 06021172A EP 1780611 A2 EP1780611 A2 EP 1780611A2
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EP
European Patent Office
Prior art keywords
outer end
hairspring
spiral
jaw
clamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06021172A
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German (de)
French (fr)
Other versions
EP1780611B1 (en
EP1780611A3 (en
Inventor
Stéphane von Gunten
Frédéric Maier
Jean-Pierre Musy
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.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
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Publication date
Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Publication of EP1780611A2 publication Critical patent/EP1780611A2/en
Publication of EP1780611A3 publication Critical patent/EP1780611A3/en
Application granted granted Critical
Publication of EP1780611B1 publication Critical patent/EP1780611B1/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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/325—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring in a fixed position, e.g. using a block
    • 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

Definitions

  • the present invention relates to a timepiece control device, comprising a rocker and a spiral mounted on the axis of the balance.
  • the inner end of the hairspring is attached to a hoop driven on the axis of the balance beam, while the outer end of the hairspring is fixed to a fastening element, called "piton", independent of the rotation of the axis of the balance.
  • the outer end of the hairspring defines by its shape an elastic clamping member which receives and squeezes the bolt.
  • This method of attachment is particularly simple and also allows to easily adjust the height of the outer end of the spiral on the peak. He introduces nevertheless the disadvantage that the mechanical characteristics of the elastic clamping member depend on the characteristics of the material in which the hairspring is made, the elastic clamping member forming a single piece with the remainder of the hairspring. The clamping force exerted on the pin and / or the deformation of the elastic clamping member are therefore limited by the mechanical properties of the spiral material.
  • the hairspring is made of a material having a low or medium elastic limit, such as silicon, the clamping force exerted by its outer end on the peak will be limited for a given size.
  • the present invention aims to remedy this disadvantage and proposes to this fir a regulating device according to claim 1 attached, a movement according to claim 12 and a hairspring according to claim 13, particular embodiments being defined in the dependent claims.
  • a regulating device for a timepiece, such as a watch, comprises a balance 1 and a spiral spring 2 driven on the axis of the balance 1 via 3.
  • the hairspring 2 is connected to the shell 3 by its inner end 4 and to a fastening element called "piton" 5 by its outer end 6.
  • the piton 5 shown in the drawings is a conventional stud, to round collar. It is typically worn by a bolt carrier (not shown) adjustably mounted on the cock of the movement of the timepiece.
  • the outer end 6 of the hairspring 2 is rigid, by its greater width than that of the remainder of the blade forming the hairspring 2, and straight, and extends over a length L.
  • the fixing of the outer end 6 of the hairspring 2 to the peg 5 is effected by means of a gripper 7 secured to the peg 5 and at least one of the jaws 8, 9 is elastically deformable to allow receiving and pinching the outer end 6 of the spring 2 between the jaws 8, 9.
  • the clamp 7 is for example driven on the stud 5, and its jaws 8, 9 extend substantially in the longitudinal direction of the outer end 6 of the hairspring 2 and in the plane of the hairspring 2.
  • the jaw 9 closest to the axis of the balance 1 is elastically deformable, because of its small width, and the jaw 8 furthest the axis of the balance 1 is rigid.
  • the jaws 8, 9 are shaped to be in contact with the outer end 6 of the spiral 2 only at certain points.
  • the rigid jaw 8 comprises two protuberances 10, 11 on its inner face, one of which is defined by a bending of the free end of the jaw 8, protuberances which rest on the longitudinal face 12 of the outer end 6 of the spiral 2 farthest from the axis of the balance 1 and thus define two points of contact.
  • the elastic jaw 9 has in turn on its inner face a protuberance 13 defined by a bending of the free end of the jaw 9, which protrusion rests on the longitudinal face 14 of the outer end 6 of the spiral 2 the less away from the axis of the balance 1 and thus defines a point of contact.
  • the arrangement of the protuberances 10, 11 and 13 is such that the point of contact defined by the protrusion 13 is situated, in the longitudinal direction of the outer end 6 of the spiral 2, between the contact points defined by the protuberances 10, 11 .
  • the elastic jaw 9 is further shaped so that the stresses exerted on it the outer end 6 of the spiral 2 are distributed substantially homogeneously.
  • the width of the elastic jaw 9 decreases from its end 13a close to the stud 5 at its free end 13, and the width of the end 13a is substantially equal to twice that of the free end 13.
  • the width is large which locally increases the strength of the jaw 9 and reduces the stress
  • the elastic jaw 9 is subjected to a stress of small intensity, namely at its free end 13, the width is small which promotes the deformation of the jaw 9. This allows to increase the clamping force and / or the deformation of the clip 7.
  • the outer end 6 of the hairspring 2 comprises on its longitudinal face 12 in contact with the rigid jaw 8 a projection 15 forming a stop which bears against the free end of the rigid jaw 8 in the longitudinal direction of the outer end 6 of the hairspring 2.
  • the end free 13 of the elastic jaw 9 cooperates with an inclined plane 16 of the longitudinal face 14 of the outer end 6 of the spiral 2.
  • the portions of the abutment 15 and the free end of the rigid jaw 8 which are in contact are respectively a flat face 15a of the abutment 15 perpendicular to the plane of the spiral 2 and a curved face 8a of the free end of the rigid jaw 8 perpendicular to the plane of the clamp 7.
  • a second inclined plane 17 is provided on the longitudinal face 14 of the outer end 6 of the hairspring 2, between the end 18 of the hairspring 2 and the inclined plane 16, to facilitate the introduction of the outer end 6 of the hairspring 2 into the clip 7.
  • the longitudinal face 14 of the outer end 6 of the spring 2 further comprises a projection 19 opposite the projection 15.
  • This projection 19 serves as an element prehensible, which can be grasped for example by tweezers to manipulate the outer end 6 of the hairspring 2 during assembly of the regulating device according to the invention in the movement.
  • a plate is fixed on one of the upper and lower faces of the clamp 7, or on each of these two faces, to close, in part at least, the opening of the clamp 7 on this or these faces.
  • FIG. 3 represents an example of this embodiment variant, in which such a wafer 20 is fixed on the upper face of the clamp 7. This or these wafers prevent, or at least reduce the risk, that the outer end 6 of the spiral 2 is moved vertically, that is to say parallel to the axis of the balance 1 and the pin 5, inadvertently during the assembly of the movement.
  • the fixing of the outer end 6 of the hairspring 2 to the peg 5 is very simple.
  • the outer end 6 of the hairspring 2 is inserted between the jaws 8, 9 of the gripper 7 longitudinally. At rest, the spacing of the jaws 8, 9 of the clamp 7 substantially corresponds to the width of the end 18 of the hairspring 2.
  • the free end 13 of the elastic jaw 9 cooperates initially with the inclined plane 17 of the outer end 6 of the hairspring 2, to move the elastic jaw 9 of the rigid jaw 8, then in a second step with the inclined plane 16 , which has the effect of abruptly bringing the elastic jaw 9 of the rigid jaw 8 in the manner of a clip.
  • the inclined plane 16 and the free end 13 of the elastic jaw 9 tend to maintain the face 15a of the abutment 15 pressed against the vertical end face 8a of the rigid jaw 8. This positions the spiral 2 in the 7.
  • the hairspring 2 is first fixed to the peg 5 by means of the clamp 7, which positions it, then driven on the axis of the balance 1 by means of the shell 3 .
  • the angle of the inclined plane 16 is chosen according to the desired locking force. A relatively small angle will make the connection between the clamp 7 and the outer end 6 of the hairspring 2 easily removable. A higher angle will increase the locking force.
  • the position of the clamp 7 on the latter can be easily modified to adjust the height position of the outer end 6 of the spiral 2 during assembly.
  • Another advantage of the invention is that the tightening characteristics of the outer end 6 of the hairspring 2 by the gripper 7 are precise and reproducible, thanks in particular to the particular shape of the jaws 8, 9 of the gripper 7 which define points. determined contact with the outer end 6 of the spiral 2.
  • the hairspring 2 has a definite active length, constituted by the length of the elastic part of the hairspring 2, that is to say the length of the remainder of the hairspring 2.
  • This active length is thus the same from one spiral to the other and is independent of the attachment of the spiral 2 to the clamp 7.
  • the gripper 7 may be made of a material different from that of the hairspring 2, and more particularly in a material specially chosen to obtain the desired mechanical characteristics for the gripper 7.
  • the clip 7 is made of a material having a high Young's modulus and elastic limit.
  • a high Young's modulus makes it possible to limit the spacing of the jaws 8, 9 necessary to obtain a determined clamping force, and thus to limit the bulk of the clamp 7, for a given geometry and dimensions of the clamp.
  • high elastic limit increases the stresses that can withstand the clamp 7, and therefore to increase the clamping force, for a given geometry and dimensions of the clamp 7.
  • An example of material satisfying these properties is steel Durnico.
  • the hairspring 2, itself, can be made of a material having a Young's modulus and / or a lower elastic limit, such as silicon.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Clamps And Clips (AREA)
  • Springs (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

The device has a balance (1), and a hairspring (2) mounted on an axis of the balance. The hairspring is connected to a collet (3) through its inner end (4) and to a balance-spring stud (5) through an outer end (6). A clip (7) integrated to the stud receives and locks the outer end of the hairspring for fixing the outer end to the stud. The clip has two jaws extending along a longitudinal direction of the outer end of the hairspring, where one jaw is elastically deformable. Independent claims are also included for the following: (1) a clockwork comprising a regulating device (2) a hairspring for a regulating device.

Description

La présente invention concerne un dispositif régulateur pour pièce d'horlogerie, comprenant un balancier et un spiral monté sur l'axe du balancier.The present invention relates to a timepiece control device, comprising a rocker and a spiral mounted on the axis of the balance.

Dans les dispositifs de ce type, l'extrémité intérieure du spiral est fixée à une virole chassée sur l'axe du balancier, tandis que l'extrémité extérieure du spiral est fixée à un élément de fixation, appelé « piton », indépendant de la rotation de l'axe du balancier.In devices of this type, the inner end of the hairspring is attached to a hoop driven on the axis of the balance beam, while the outer end of the hairspring is fixed to a fastening element, called "piton", independent of the rotation of the axis of the balance.

Plusieurs manières de fixer l'extrémité extérieure du spiral au piton sont connues. Une manière conventionnelle consiste à placer cette extrémité extérieure dans un trou prévu à cet effet dans le piton puis à la bloquer au moyen d'une goupille ou par collage. Cette opération peut en pratique se révéler délicate à réaliser, en particulier dans les cas où, pour des raisons techniques ou de normalisation, le piton n'est pas réglable en hauteur. Dans ces cas, en effet, une opération manuelle de déformation de l'extrémité extérieure du spiral est souvent nécessaire pour pouvoir positionner cette extrémité extérieure dans le trou du piton après que le spiral a été chassé sur l'axe de balancier, du fait que le trou du piton se trouve rarement dans sa position idéale par rapport à la virole. En particulier, une telle déformation de l'extrémité extérieure du spiral doit être généralement opérée pour obtenir une perpendicularité entre le piton et le reste du spiral. Outre son caractère fastidieux, ce mode de liaison du spiral au piton, parce qu'il peut nécessiter une déformation de l'extrémité extérieure du spiral, est inadapté aux spiraux réalisés dans une matière fragile telle que le silicium car ce genre de matière ne se déforme pas plastiquement.Several ways of attaching the outer end of the hairspring to the peg are known. A conventional way is to place this outer end in a hole provided for this purpose in the peak and then block by means of a pin or by gluing. This operation may in practice be difficult to perform, especially in cases where, for technical reasons or standardization, the peak is not adjustable in height. In these cases, in fact, a manual deformation operation of the outer end of the hairspring is often necessary to be able to position this outer end in the piton hole after the hairspring has been driven on the balance shaft, because the piton hole is rarely in its ideal position with respect to the ferrule. In particular, such a deformation of the outer end of the hairspring must be generally operated to obtain a perpendicularity between the peak and the remainder of the hairspring. In addition to its tedious nature, this mode of connection of the hairspring to the pin, because it may require a deformation of the outer end of the hairspring, is unsuitable for spirals made of a brittle material such as silicon because this kind of material is not does not deform plastically.

Une autre manière de fixer l'extrémité extérieure du spiral au piton est décrite dans le document EP 1 515 200 . Dans ce document, l'extrémité extérieure du spiral définit par sa forme un organe de serrage élastique qui reçoit et serre le piton. Ce mode de fixation est particulièrement simple et permet en outre de régler facilement la hauteur de l'extrémité extérieure du spiral sur le piton. Il présente néanmoins l'inconvénient que les caractéristiques mécaniques de l'organe de serrage élastique dépendent des caractéristiques de la matière dans laquelle est réalisé le spiral, l'organe de serrage élastique formant une seule pièce avec le reste du spiral. La force de serrage exercée sur le piton et/ou la déformation de l'organe de serrage élastique sont donc limitées par les propriétés mécaniques de la matière du spiral. Ainsi, par exemple, si le spiral est réalisé dans une matière ayant une limite élastique peu élevée ou moyenne, telle que le silicium, la force de serrage exercée par son extrémité extérieure sur le piton sera limitée pour un encombrement donné.Another way of fixing the outer end of the hairspring to the peg is described in the document EP 1,515,200 . In this document, the outer end of the hairspring defines by its shape an elastic clamping member which receives and squeezes the bolt. This method of attachment is particularly simple and also allows to easily adjust the height of the outer end of the spiral on the peak. He introduces nevertheless the disadvantage that the mechanical characteristics of the elastic clamping member depend on the characteristics of the material in which the hairspring is made, the elastic clamping member forming a single piece with the remainder of the hairspring. The clamping force exerted on the pin and / or the deformation of the elastic clamping member are therefore limited by the mechanical properties of the spiral material. Thus, for example, if the hairspring is made of a material having a low or medium elastic limit, such as silicon, the clamping force exerted by its outer end on the peak will be limited for a given size.

La présente invention vise à remédier à cet inconvénient et propose à cette fir un dispositif régulateur selon la revendication 1 annexée, un mouvement selon la revendication 12 et un spiral selon la revendication 13, des modes de réalisation particuliers étant définis dans les revendications dépendantes.The present invention aims to remedy this disadvantage and proposes to this fir a regulating device according to claim 1 attached, a movement according to claim 12 and a hairspring according to claim 13, particular embodiments being defined in the dependent claims.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée suivante faite en référence aux dessins annexés dans lesquels:

  • la figure 1 est une vue en perspective de dessus d'un dispositif régulateur selon l'invention,
  • la figure 2 est une vue plane de dessus d'une partie du dispositif régulateur selon l'invention, montrant l'assemblage d'une pince, d'un piton et d'une extrémité extérieure d'un spiral, et
  • la figure 3 est une vue en perspective de dessous partielle d'une variante de réalisation du dispositif régulateur selon l'invention.
Other features and advantages of the present invention will appear on reading the following detailed description given with reference to the accompanying drawings in which:
  • FIG. 1 is a perspective view from above of a regulating device according to the invention,
  • FIG. 2 is a plan view from above of a part of the regulator device according to the invention, showing the assembly of a clamp, a stud and an outer end of a spiral, and
  • Figure 3 is a partial bottom perspective view of an alternative embodiment of the regulating device according to the invention.

En référence aux figures 1 et 2, un dispositif régulateur selon l'invention pour une pièce d'horlogerie, telle qu'une montre, comprend un balancier 1 et un ressort-spiral 2 chassé sur l'axe du balancier 1 par l'intermédiaire d'une virole 3. Le spiral 2 est lié à la virole 3 par son extrémité intérieure 4 et à un élément de fixation dit « piton » 5 par son extrémité extérieure 6. Le piton 5 représenté sur les dessins est un piton conventionnel, à col rond. Il est typiquement porté par un porte-piton (non représenté) monté de manière réglable sur le coq du mouvement de la pièce d'horlogerie. L'extrémité extérieure 6 du spiral 2 est rigide, de par sa plus grande largeur que celle du reste de la lame formant le spiral 2, et rectiligne, et s'étend sur une longueur L.With reference to FIGS. 1 and 2, a regulating device according to the invention for a timepiece, such as a watch, comprises a balance 1 and a spiral spring 2 driven on the axis of the balance 1 via 3. The hairspring 2 is connected to the shell 3 by its inner end 4 and to a fastening element called "piton" 5 by its outer end 6. The piton 5 shown in the drawings is a conventional stud, to round collar. It is typically worn by a bolt carrier (not shown) adjustably mounted on the cock of the movement of the timepiece. The outer end 6 of the hairspring 2 is rigid, by its greater width than that of the remainder of the blade forming the hairspring 2, and straight, and extends over a length L.

Conformément à l'invention, la fixation de l'extrémité extérieure 6 du spiral 2 au piton 5 est effectuée au moyen d'une pince 7 solidaire du piton 5 et dont l'une au moins des mâchoires 8, 9 est déformable élastiquement pour permettre la réception et le pincement de l'extrémité extérieure 6 du spiral 2 entre les mâchoires 8, 9. La pince 7 est par exemple chassée sur le piton 5, et ses mâchoires 8, 9 s'étendent sensiblement suivant la direction longitudinale de l'extrémité extérieure 6 du spiral 2 et dans le plan du spiral 2. Dans l'exemple illustré, la mâchoire 9 la plus proche de l'axe du balancier 1 est déformable élastiquement, de par sa faible largeur, et la mâchoire 8 la plus éloignée de l'axe du balancier 1 est rigide.According to the invention, the fixing of the outer end 6 of the hairspring 2 to the peg 5 is effected by means of a gripper 7 secured to the peg 5 and at least one of the jaws 8, 9 is elastically deformable to allow receiving and pinching the outer end 6 of the spring 2 between the jaws 8, 9. The clamp 7 is for example driven on the stud 5, and its jaws 8, 9 extend substantially in the longitudinal direction of the outer end 6 of the hairspring 2 and in the plane of the hairspring 2. In the example shown, the jaw 9 closest to the axis of the balance 1 is elastically deformable, because of its small width, and the jaw 8 furthest the axis of the balance 1 is rigid.

Les mâchoires 8, 9 sont conformées pour être en contact avec l'extrémité extérieure 6 du spiral 2 seulement en des points déterminés. A cet effet, la mâchoire rigide 8 comporte deux protubérances 10, 11 sur sa face intérieure, dont l'une est définie par un recourbement de l'extrémité libre de la mâchoire 8, protubérances qui s'appuient sur la face longitudinale 12 de l'extrémité extérieure 6 du spiral 2 la plus éloignée de l'axe du balancier 1 et définissent ainsi deux points de contact. La mâchoire élastique 9 comporte quant à elle sur sa face intérieure une protubérance 13 définie par un recourbement de l'extrémité libre de la mâchoire 9, protubérance qui s'appuie sur la face longitudinale 14 de l'extrémité extérieure 6 du spiral 2 la moins éloignée de l'axe du balancier 1 et définit ainsi un point de contact. La disposition des protubérances 10,11 et 13 est telle que le point de contact défini par la protubérance 13 soit situé, dans la direction longitudinale de l'extrémité extérieure 6 du spiral 2, entre les points de contact définis par les protubérances 10, 11.The jaws 8, 9 are shaped to be in contact with the outer end 6 of the spiral 2 only at certain points. For this purpose, the rigid jaw 8 comprises two protuberances 10, 11 on its inner face, one of which is defined by a bending of the free end of the jaw 8, protuberances which rest on the longitudinal face 12 of the outer end 6 of the spiral 2 farthest from the axis of the balance 1 and thus define two points of contact. The elastic jaw 9 has in turn on its inner face a protuberance 13 defined by a bending of the free end of the jaw 9, which protrusion rests on the longitudinal face 14 of the outer end 6 of the spiral 2 the less away from the axis of the balance 1 and thus defines a point of contact. The arrangement of the protuberances 10, 11 and 13 is such that the point of contact defined by the protrusion 13 is situated, in the longitudinal direction of the outer end 6 of the spiral 2, between the contact points defined by the protuberances 10, 11 .

La mâchoire élastique 9 est en outre conformée pour que les contraintes qu'exerce sur elle l'extrémité extérieure 6 du spiral 2 soient réparties de manière sensiblement homogène. A cet effet, la largeur de la mâchoire élastique 9 va en diminuant de son extrémité 13a proche du piton 5 à son extrémité libre 13, et la largeur de l'extrémité 13a est sensiblement égale à deux fois celle de l'extrémité libre 13. Ainsi, là où la mâchoire élastique 9 est soumise à une force de grande intensité, à savoir à son extrémité 13a proche du piton 5, la largeur est grande ce qui localement augmente la résistance de la mâchoire 9 et diminue la contrainte, et là où la mâchoire élastique 9 est soumise à une contrainte de petite intensité, à savoir à son extrémité libre 13, la largeur est petite ce qui favorise la déformation de la mâchoire 9. Ceci permet d'augmenter la force de serrage et/ou la déformation de la pince 7.The elastic jaw 9 is further shaped so that the stresses exerted on it the outer end 6 of the spiral 2 are distributed substantially homogeneously. For this purpose, the width of the elastic jaw 9 decreases from its end 13a close to the stud 5 at its free end 13, and the width of the end 13a is substantially equal to twice that of the free end 13. Thus, where the elastic jaw 9 is subjected to a force of great intensity, namely at its end 13a close to the peak 5, the width is large which locally increases the strength of the jaw 9 and reduces the stress, and where the elastic jaw 9 is subjected to a stress of small intensity, namely at its free end 13, the width is small which promotes the deformation of the jaw 9. This allows to increase the clamping force and / or the deformation of the clip 7.

Selon une autre caractéristique de l'invention, l'extrémité extérieure 6 du spiral 2 comprend sur sa face longitudinale 12 en contact avec la mâchoire rigide 8 une saillie 15 formant une butée qui s'appuie contre l'extrémité libre de la mâchoire rigide 8 dans la direction longitudinale de l'extrémité extérieure 6 du spiral 2. Pour maintenir la butée 15 en appui contre la mâchoire rigide 8, et ainsi verrouiller la position longitudinale de l'extrémité extérieure 6 du spiral 2 dans la pince 7, l'extrémité libre 13 de la mâchoire élastique 9 coopère avec un plan incliné 16 de la face longitudinale 14 de l'extrémité extérieure 6 du spiral 2. Les parties de la butée 15 et de l'extrémité libre de la mâchoire rigide 8 qui sont en contact sont respectivement une face plane 15a de la butée 15 perpendiculaire au plan du spiral 2 et une face courbe 8a de l'extrémité libre de la mâchoire rigide 8 perpendiculaire au plan de la pince 7.According to another characteristic of the invention, the outer end 6 of the hairspring 2 comprises on its longitudinal face 12 in contact with the rigid jaw 8 a projection 15 forming a stop which bears against the free end of the rigid jaw 8 in the longitudinal direction of the outer end 6 of the hairspring 2. To maintain the stop 15 bearing against the rigid jaw 8, and thus lock the longitudinal position of the outer end 6 of the hairspring 2 in the clamp 7, the end free 13 of the elastic jaw 9 cooperates with an inclined plane 16 of the longitudinal face 14 of the outer end 6 of the spiral 2. The portions of the abutment 15 and the free end of the rigid jaw 8 which are in contact are respectively a flat face 15a of the abutment 15 perpendicular to the plane of the spiral 2 and a curved face 8a of the free end of the rigid jaw 8 perpendicular to the plane of the clamp 7.

Un second plan incliné 17 est prévu sur la face longitudinale 14 de l'extrémité extérieure 6 du spiral 2, entre le bout 18 du spiral 2 et le plan incliné 16, pour faciliter l'introduction de l'extrémité extérieure 6 du spiral 2 dans la pince 7.A second inclined plane 17 is provided on the longitudinal face 14 of the outer end 6 of the hairspring 2, between the end 18 of the hairspring 2 and the inclined plane 16, to facilitate the introduction of the outer end 6 of the hairspring 2 into the clip 7.

La face longitudinale 14 de l'extrémité extérieure 6 du spiral 2 comporte en outre une saillie 19 opposée à la saillie 15. Cette saillie 19 sert d'élément préhensible, pouvant être saisi par exemple par des brucelles pour manipuler l'extrémité extérieure 6 du spiral 2 lors du montage du dispositif régulateur selon l'invention dans le mouvement.The longitudinal face 14 of the outer end 6 of the spring 2 further comprises a projection 19 opposite the projection 15. This projection 19 serves as an element prehensible, which can be grasped for example by tweezers to manipulate the outer end 6 of the hairspring 2 during assembly of the regulating device according to the invention in the movement.

Dans une variante de réalisation de la présente invention, une plaquette est fixée sur l'une des faces supérieure et inférieure de la pince 7, ou sur chacune de ces deux faces, pour fermer, en partie au moins, l'ouverture de la pince 7 sur cette ou ces faces. La figure 3 représente un exemple de cette variante de réalisation, dans lequel une telle plaquette 20 est fixée sur la face supérieure de la pince 7. Cette ou ces plaquettes empêchent, ou au moins réduisent le risque, que l'extrémité extérieure 6 du spiral 2 soit déplacée verticalement, c'est-à-dire parallèlement à l'axe du balancier 1 et au piton 5, par inadvertance, lors du montage du mouvement.In an alternative embodiment of the present invention, a plate is fixed on one of the upper and lower faces of the clamp 7, or on each of these two faces, to close, in part at least, the opening of the clamp 7 on this or these faces. FIG. 3 represents an example of this embodiment variant, in which such a wafer 20 is fixed on the upper face of the clamp 7. This or these wafers prevent, or at least reduce the risk, that the outer end 6 of the spiral 2 is moved vertically, that is to say parallel to the axis of the balance 1 and the pin 5, inadvertently during the assembly of the movement.

Grâce à la pince 7 telle que décrite ci-dessus, la fixation de l'extrémité extérieure 6 du spiral 2 au piton 5 s'effectue très simplement. L'extrémité extérieure 6 du spiral 2 est introduite entre les mâchoires 8, 9 de la pince 7 longitudinalement. Au repos, l'écartement des mâchoires 8, 9 de la pince 7 correspond sensiblement à la largeur du bout 18 du spiral 2. Lors de l'introduction de l'extrémité extérieure 6 du spiral 2 entre les mâchoires 8, 9, l'extrémité libre 13 de la mâchoire élastique 9 coopère dans un premier temps avec le plan incliné 17 de l'extrémité extérieure 6 du spiral 2, pour écarter la mâchoire élastique 9 de la mâchoire rigide 8, puis dans un second temps avec le plan incliné 16, ce qui a pour effet de rapprocher brusquement la mâchoire élastique 9 de la mâchoire rigide 8 à la manière d'un clip. Le mouvement d'introduction de l'extrémité extérieure 6 du spiral 2 dans la pince 7 s'arrête au moment où la butée 15 vient s'appuyer longitudinalement contre l'extrémité libre de la mâchoire rigide 8. A cet instant, l'extrémité libre 13 de la mâchoire élastique 9 est en appui contre le plan incliné 16, ce qui maintient la butée 15 contre l'extrémité libre de la mâchoire rigide 8 et verrouille ainsi la position longitudinale de l'extrémité extérieure 6 du spiral 2 dans la pince 7, et l'écartement des mâchoires 8, 9 reste supérieur à leur écartement au repos de sorte que la pince 7 exerce sur l'extrémité extérieure 6 du spiral 2 un serrage suffisant pour maintenir cette extrémité extérieure 6 dans la pince 7.Thanks to the clamp 7 as described above, the fixing of the outer end 6 of the hairspring 2 to the peg 5 is very simple. The outer end 6 of the hairspring 2 is inserted between the jaws 8, 9 of the gripper 7 longitudinally. At rest, the spacing of the jaws 8, 9 of the clamp 7 substantially corresponds to the width of the end 18 of the hairspring 2. When the outer end 6 of the hairspring 2 is inserted between the jaws 8, 9, the free end 13 of the elastic jaw 9 cooperates initially with the inclined plane 17 of the outer end 6 of the hairspring 2, to move the elastic jaw 9 of the rigid jaw 8, then in a second step with the inclined plane 16 , which has the effect of abruptly bringing the elastic jaw 9 of the rigid jaw 8 in the manner of a clip. The insertion movement of the outer end 6 of the hairspring 2 into the gripper 7 stops when the stop 15 comes to bear longitudinally against the free end of the rigid jaw 8. At this moment, the end free 13 of the elastic jaw 9 is in abutment against the inclined plane 16, which maintains the stop 15 against the free end of the rigid jaw 8 and thus locks the longitudinal position of the outer end 6 of the spiral 2 in the clamp 7, and the spacing of the jaws 8, 9 remains higher than their spacing at rest so that the clamp 7 exerts on the outer end 6 of the hairspring 2 sufficient clamping to maintain this outer end 6 in the clamp 7.

On notera que la butée 15 et le plan incliné 16, en coopération avec les extrémités libres des mâchoires 8, 9, positionnent l'extrémité extérieure 6 du spiral 2 dans la pince 7 non seulement dans la direction longitudinale mais aussi angulairement dans un plan vertical. En effet, le plan incliné 16 et l'extrémité libre 13 de la mâchoire élastique 9 tendent à maintenir la face 15a de la butée 15 plaquée contre la face d'extrémité verticale 8a de la mâchoire rigide 8. Ceci positionne le spiral 2 dans le plan de la pince 7. En pratique, le spiral 2 est d'abord fixé au piton 5 par l'intermédiaire de la pince 7, qui le positionne, puis chassé sur l'axe du balancier 1 par l'intermédiaire de la virole 3.Note that the abutment 15 and the inclined plane 16, in cooperation with the free ends of the jaws 8, 9, position the outer end 6 of the spiral 2 in the clamp 7 not only in the longitudinal direction but also angularly in a vertical plane . Indeed, the inclined plane 16 and the free end 13 of the elastic jaw 9 tend to maintain the face 15a of the abutment 15 pressed against the vertical end face 8a of the rigid jaw 8. This positions the spiral 2 in the 7. In practice, the hairspring 2 is first fixed to the peg 5 by means of the clamp 7, which positions it, then driven on the axis of the balance 1 by means of the shell 3 .

L'angle du plan incliné 16 est choisi en fonction de la force de verrouillage souhaitée. Un angle relativement faible rendra la liaison entre la pince 7 et l'extrémité extérieure 6 du spiral 2 facilement démontable. Un angle plus élevé augmentera la force de verrouillage.The angle of the inclined plane 16 is chosen according to the desired locking force. A relatively small angle will make the connection between the clamp 7 and the outer end 6 of the hairspring 2 easily removable. A higher angle will increase the locking force.

Du fait que la pince 7 est chassée sur le piton 5, la position de la pince 7 sur ce dernier peut être facilement modifiée pour régler la position en hauteur de l'extrémité extérieure 6 du spiral 2 lors du montage.Because the clamp 7 is driven on the stud 5, the position of the clamp 7 on the latter can be easily modified to adjust the height position of the outer end 6 of the spiral 2 during assembly.

Un autre avantage de l'invention est que les caractéristiques de serrage de l'extrémité extérieure 6 du spiral 2 par la pince 7 sont précises et reproductibles, grâce notamment à la forme particulière des mâchoires 8, 9 de la pince 7 qui définissent des points de contact déterminés avec l'extrémité extérieure 6 du spiral 2.Another advantage of the invention is that the tightening characteristics of the outer end 6 of the hairspring 2 by the gripper 7 are precise and reproducible, thanks in particular to the particular shape of the jaws 8, 9 of the gripper 7 which define points. determined contact with the outer end 6 of the spiral 2.

De plus, avec son extrémité extérieure rigide 6 de longueur L, le spiral 2 a une longueur active bien déterminée, constituée par la longueur de la partie élastique du spiral 2, c'est-à-dire la longueur du reste du spiral 2. Cette longueur active est ainsi la même d'un spiral à l'autre et est indépendante de la fixation du spiral 2 à la pince 7.In addition, with its rigid outer end 6 of length L, the hairspring 2 has a definite active length, constituted by the length of the elastic part of the hairspring 2, that is to say the length of the remainder of the hairspring 2. This active length is thus the same from one spiral to the other and is independent of the attachment of the spiral 2 to the clamp 7.

Enfin, puisqu'elle constitue une pièce distincte du spiral, la pince 7 peut être réalisée dans une matière différente de celle du spiral 2, et plus particulièrement dans une matière spécialement choisie pour obtenir des caractéristiques mécaniques souhaitées pour la pince 7. De préférence, la pince 7 est en une matière ayant un module de Young et une limite élastique élevés. Un module de Young élevé permet de limiter l'écartement des mâchoires 8, 9 nécessaire pour obtenir une force de serrage déterminée, et donc de limiter l'encombrement de la pince 7, pour une géométrie et des dimensions données de la pince 7. Une limite élastique élevée permet d'augmenter les contraintes que peut supporter la pince 7, et donc d'augmenter la force de serrage, pour une géométrie et des dimensions données de la pince 7. Un exemple de matière satisfaisant à ces propriétés est l'acier Durnico. Le spiral 2, lui, peut être réalisé dans une matière ayant un module de Young et/ou une limite élastique moins élevés, telle que le silicium.Finally, since it constitutes a separate part of the hairspring, the gripper 7 may be made of a material different from that of the hairspring 2, and more particularly in a material specially chosen to obtain the desired mechanical characteristics for the gripper 7. Preferably, the clip 7 is made of a material having a high Young's modulus and elastic limit. A high Young's modulus makes it possible to limit the spacing of the jaws 8, 9 necessary to obtain a determined clamping force, and thus to limit the bulk of the clamp 7, for a given geometry and dimensions of the clamp. high elastic limit increases the stresses that can withstand the clamp 7, and therefore to increase the clamping force, for a given geometry and dimensions of the clamp 7. An example of material satisfying these properties is steel Durnico. The hairspring 2, itself, can be made of a material having a Young's modulus and / or a lower elastic limit, such as silicon.

Claims (13)

Dispositif régulateur pour pièce d'horlogerie, comprenant un balancier (1), un spiral (2) monté sur l'axe du balancier (1), un élément de fixation (5) et un moyen (7) pour fixer l'extrémité extérieure (6) du spiral (2) à l'élément de fixation (5), caractérisé en ce que ledit moyen de fixation comprend un organe de serrage élastique (7) solidaire de l'élément de fixation (5) et apte à recevoir et serrer l'extrémité extérieure (6) du spiral (2).Regulator device for a timepiece, comprising a balance (1), a balance spring (2) mounted on the axis of the balance (1), a fastening element (5) and a means (7) for fixing the outer end (6) of the hairspring (2) to the fastening element (5), characterized in that said fastening means comprises an elastic clamping member (7) integral with the fastening element (5) and adapted to receive and tighten the outer end (6) of the hairspring (2). Dispositif régulateur selon la revendication 1, caractérisé en ce que l'organe de serrage élastique (7) est chassé sur l'élément de fixation (5).Regulator device according to claim 1, characterized in that the resilient clamping member (7) is driven onto the fastening element (5). Dispositif régulateur selon la revendication 1 ou 2, caractérisé en ce que l'organe de serrage élastique (7) est conformé pour être en contact avec l'extrémité extérieure (6) du spiral (2) seulement en des points déterminés (10, 11, 13).Regulator device according to claim 1 or 2, characterized in that the elastic clamping member (7) is shaped to be in contact with the outer end (6) of the spiral (2) only at certain points (10, 11 , 13). Dispositif régulateur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'organe de serrage élastique (7) est une pince dont les mâchoires (8, 9) s'étendent sensiblement suivant la direction longitudinale de l'extrémité extérieure (6) du spiral (2), l'une au moins desdites mâchoires (8, 9) étant déformable élastiquement.Regulating device according to any one of claims 1 to 3, characterized in that the elastic clamping member (7) is a clamp whose jaws (8, 9) extend substantially in the longitudinal direction of the outer end (6) of the hairspring (2), at least one of said jaws (8, 9) being elastically deformable. Dispositif régulateur selon la revendication 4, caractérisé en ce que la ou l'une au moins des mâchoires élastiques (9) a une largeur variable pour que les contraintes qu'exerce sur elle l'extrémité extérieure (6) du spiral (2) soient réparties de manière sensiblement homogène.Regulator device according to Claim 4, characterized in that the at least one elastic jaw (9) has a variable width so that the stresses exerted on it by the outer end (6) of the spiral (2) are distributed substantially homogeneously. Dispositif régulateur selon la revendication 4, caractérisé en ce que la ou l'une au moins des mâchoires élastiques (9) est conformée pour être en contact avec l'extrémité extérieure (6) du spiral (2) seulement à son extrémité libre (13), et en ce que la largeur de cette mâchoire élastique (9) va en diminuant de son extrémité (13a) la plus proche de l'élément de fixation (5) à son extrémité libre (13).Regulator device according to claim 4, characterized in that the at least one of the elastic jaws (9) is shaped to be in contact with the outer end (6) of the spiral (2) only at its free end (13). ), and in that the width of the elastic jaw (9) decreases from its end (13a) closest to the fastening element (5) at its free end (13). Dispositif régulateur selon l'une quelconque des revendications 4 à 6, caractérisé en ce qu'une première (9) des mâchoires de la pince (7) est conformée pour coopérer avec un plan incliné (16) de l'extrémité extérieure (6) du spiral (2) et une seconde (8) des mâchoires de la pince (7) est conformée pour coopérer avec une butée (15) de l'extrémité extérieure (6) du spiral (2), la coopération entre la première mâchoire (9) et le plan incliné (16) tendant à maintenir la butée (15) contre la seconde mâchoire (8), de manière à verrouiller la position longitudinale de l'extrémité extérieure (6) du spiral (2) dans la pince (7).Regulating device according to any one of claims 4 to 6, characterized in that a first (9) of the jaws of the clamp (7) is shaped to cooperate with an inclined plane (16) of the outer end (6) the spiral (2) and a second (8) of the jaws of the clamp (7) is shaped to cooperate with a stop (15) of the outer end (6) of the spiral (2), the cooperation between the first jaw ( 9) and the inclined plane (16) tending to hold the stop (15) against the second jaw (8), so as to lock the longitudinal position of the outer end (6) of the hairspring (2) in the gripper (7). ). Dispositif régulateur selon la revendication 7, caractérisé en ce que la première mâchoire (9) de la pince (7) est déformable élastiquement et la seconde mâchoire (8) de la pince (7) est sensiblement rigide.Regulator device according to claim 7, characterized in that the first jaw (9) of the clamp (7) is elastically deformable and the second jaw (8) of the clamp (7) is substantially rigid. Dispositif régulateur selon l'une quelconque des revendications 4 à 8, caractérisé en ce qu'il comprend en outre au moins une plaquette (20) fixée à une face de la pince (7) et fermant en partie au moins l'ouverture de la pince (7) sur cette face.Regulating device according to any one of claims 4 to 8, characterized in that it further comprises at least one plate (20) fixed to one side of the clamp (7) and partially closing at least the opening of the clip (7) on this face. Dispositif régulateur selon l'une quelconque des revendications 1 à 9, caractérisé en ce que l'extrémité extérieure (6) du spiral (2) est sensiblement rigide.Regulator device according to any one of claims 1 to 9, characterized in that the outer end (6) of the spiral (2) is substantially rigid. Dispositif régulateur selon l'une quelconque des revendications 1 à 10, caractérisé en ce l'organe de serrage élastique (7) est réalisé dans une matière ayant un module de Young et/ou une limite élastique plus élevés que ceux de la matière dans laquelle est réalisé le spiral (2).Regulator device according to any one of claims 1 to 10, characterized in that the elastic clamping member (7) is made of a material having a Young's modulus and / or a yield strength higher than those of the material in which is made the spiral (2). Mouvement d'horlogerie comprenant un dispositif régulateur selon l'une quelconque des revendications 1 à 11.Clock movement comprising a regulating device according to any one of claims 1 to 11. Spiral d'horlogerie pour un dispositif régulateur selon la revendication 7 ou la revendication 10 lorsqu'elle dépend de la revendication 7, comprenant les caractéristiques de spiral définies dans la revendication 7 ou la revendication 10 lorsqu'elle dépend de la revendication 7.A timepiece for a regulating device according to claim 7 or claim 10 when dependent on claim 7, including the hairspring features defined in claim 7 or claim 10 when dependent on claim 7.
EP20060021172 2005-10-25 2006-10-10 Regulating device for a timepiece Active EP1780611B1 (en)

Applications Claiming Priority (1)

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CH17112005A CH700805B1 (en) 2005-10-25 2005-10-25 Device controller for a timepiece and watch movement comprising such a device.

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
EP2570871A1 (en) * 2011-09-14 2013-03-20 Montres Breguet SA Hairspring with two spiral springs
CN103376728A (en) * 2012-04-20 2013-10-30 尼瓦洛克斯-法尔股份有限公司 Method for fixing two portions prepared from crystalline silicon
RU2557673C1 (en) * 2011-09-15 2015-07-27 Бланпэн Са Clock mechanism drum with reduced core diameter
WO2017163148A1 (en) 2016-03-23 2017-09-28 Patek Philippe Sa Geneve Balance wheel oscillator for timepiece
WO2017191533A1 (en) 2016-05-02 2017-11-09 Patek Philippe Sa Geneve Timepiece hairspring
EP3913441A1 (en) 2020-05-22 2021-11-24 Patek Philippe SA Genève Oscillator for a timepiece
EP4006648A1 (en) * 2020-11-27 2022-06-01 Omega SA Hairspring for a timepiece resonator mechanism provided with a means for adjusting the effective length of said hairspring

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2570868B1 (en) 2011-09-13 2014-09-03 Patek Philippe SA Genève Part for a clockwork, clockwork and timepiece

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US1037742A (en) * 1911-04-19 1912-09-03 Hamilton Watch Co Hair-spring-stud-holding means.
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US224227A (en) * 1879-12-11 1880-02-03 Hair-spring stud for watches
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2570871A1 (en) * 2011-09-14 2013-03-20 Montres Breguet SA Hairspring with two spiral springs
CN102998961A (en) * 2011-09-14 2013-03-27 蒙特雷布勒盖股份有限公司 Hairspring with two spiral springs
US8979359B2 (en) 2011-09-14 2015-03-17 Montres Breguet S.A. Balance spring with two hairsprings
CN102998961B (en) * 2011-09-14 2015-06-10 蒙特雷布勒盖股份有限公司 Hairspring with two spiral springs
RU2557673C1 (en) * 2011-09-15 2015-07-27 Бланпэн Са Clock mechanism drum with reduced core diameter
CN103376728A (en) * 2012-04-20 2013-10-30 尼瓦洛克斯-法尔股份有限公司 Method for fixing two portions prepared from crystalline silicon
WO2017163148A1 (en) 2016-03-23 2017-09-28 Patek Philippe Sa Geneve Balance wheel oscillator for timepiece
US11249440B2 (en) 2016-03-23 2022-02-15 Patek Philippe Sa Geneve Balance-hairspring oscillator for a timepiece
WO2017191533A1 (en) 2016-05-02 2017-11-09 Patek Philippe Sa Geneve Timepiece hairspring
EP3913441A1 (en) 2020-05-22 2021-11-24 Patek Philippe SA Genève Oscillator for a timepiece
EP4006648A1 (en) * 2020-11-27 2022-06-01 Omega SA Hairspring for a timepiece resonator mechanism provided with a means for adjusting the effective length of said hairspring
JP2022085867A (en) * 2020-11-27 2022-06-08 オメガ・エス アー Spiral spring for timepiece resonator mechanism provided with means for setting effective length of spiral spring

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HK1099088A1 (en) 2007-08-03
EP1780611B1 (en) 2012-09-05
EP1780611A3 (en) 2011-01-05
CH700805B1 (en) 2010-10-29

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