EP3623876A1 - Split collar with non-circular opening - Google Patents
Split collar with non-circular opening Download PDFInfo
- Publication number
- EP3623876A1 EP3623876A1 EP19206569.6A EP19206569A EP3623876A1 EP 3623876 A1 EP3623876 A1 EP 3623876A1 EP 19206569 A EP19206569 A EP 19206569A EP 3623876 A1 EP3623876 A1 EP 3623876A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ferrule
- central opening
- split
- contour
- support parts
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 claims description 14
- 230000005489 elastic deformation Effects 0.000 claims description 6
- 239000011257 shell material Substances 0.000 description 28
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- 229910052710 silicon Inorganic materials 0.000 description 10
- 239000010703 silicon Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000010432 diamond Substances 0.000 description 6
- 239000010453 quartz Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 229910003460 diamond Inorganic materials 0.000 description 5
- 229920000297 Rayon Polymers 0.000 description 4
- 239000002964 rayon Substances 0.000 description 4
- 238000000708 deep reactive-ion etching Methods 0.000 description 3
- 239000000700 radioactive tracer Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- OANVFVBYPNXRLD-UHFFFAOYSA-M propyromazine bromide Chemical compound [Br-].C12=CC=CC=C2SC2=CC=CC=C2N1C(=O)C(C)[N+]1(C)CCCC1 OANVFVBYPNXRLD-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
- G04B17/34—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring onto the balance
- G04B17/345—Details of the spiral roll
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49579—Watch or clock making
- Y10T29/49581—Watch or clock making having arbor, pinion, or balance
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/70—Interfitted members
Definitions
- the invention relates to a split ferrule whose contour of the central opening intended to receive a pendulum axis is non-circular.
- the invention also relates to a spiral ring-spring assembly and to a method of mounting a timepiece.
- Swiss patent no. CH 468662 described, in particular in connection with its figure 3 , a ferrule having four arms, a circular central opening, an elasticity slot for hunting on the axis of a pendulum and a recess for balancing.
- French patent application number FR 2 124 243 (( US 3,785,028 ) relates to circular sleeves for spiral spring intended to be expelled on the axis of the balance of a watch. These sleeves are made from profiles having an arm for fixing a hairspring and a regulation slot diametrically opposite this arm.
- ferrules or ferrule-hairspring assemblies made of a material such as silicon, quartz or diamond.
- these materials which can be machined by techniques such as deep etching (DRIE), do not have a plastic deformation domain, which makes them brittle as soon as the stresses in the material exceed the elastic limit.
- DRIE deep etching
- Swiss patent no. 508,233 offers a split ferrule whose circular central opening has a second elasticity slot of small dimension.
- the two halves of this shell are extremely massive, which makes them very rigid and limits their amplitude of elastic deformation. This makes the shell very fragile, in particular when it is made of a material such as silicon.
- Swiss patent no. CH 252 387 relates to a ferrule made up of two parts, a hollowed out ring and an elastic U-shaped part arranged transversely inside the hollowed out ring.
- the two arms of the U are constrained by the hollowed out ring and must be deformed so as to pinch the hairspring blade and accommodate the pendulum axis during hunting.
- the elasticity to level of the connection of the arms of the U-shaped part is insufficient, which easily leads to the rupture of this part, in particular when it is made of a material such as Silicon.
- EP 2 112 565 reveals micromechanical parts having a central opening whose contour is not circular but has a rotation symmetry of 2 ⁇ / 3 around the axis passing through the center C of the central opening.
- a micromechanical part provided with elastic arms.
- the main object of the invention is to provide a ferrule which can be driven out on axes of different diameters while guaranteeing an adequate rotational holding torque without going beyond the elastic limit of the material and which does not cause unbalance .
- split ferrules have been around for a very long time, there has never been proposed, until now, a split ferrule having a central opening which is not circular and whose elasticity properties allow the above-mentioned purpose to be achieved, in particular for a material without plastic deformation domain such as silicon, quartz or diamond.
- this ferrule In addition to its original shape, it has been found that this ferrule is entirely satisfactory, in the sense that it can accommodate axes of different diameters, which it presents, once mounted for example on a pendulum axis, an excellent torque of held on this axis and that its breakage rate during hunting for assembly to an axis is practically zero.
- Point 21 below provides additional and advantageous characteristics of the coil-spring assembly according to the invention: 21.- Ferrule-spiral spring assembly according to point 20, the ferrule and the spiral spring being in one piece.
- the invention also relates to a method for mounting a timepiece, comprising driving out a ferrule-spiral spring assembly according to the invention on a pendulum axis.
- a ferrule is defined by claim 1.
- a timepiece is defined by claim 15.
- the split ferrule according to the invention is shown in the figure 1 .
- it has a slot 1 and a central opening 2 which is intended to receive a pendulum axis.
- the contour 3 of the central opening 2 is not circular but preferably has a certain symmetry.
- the shape of the contour 3 of the central opening 2 is then preferably chosen such that this contour 3 has a symmetry of reflection with respect to the line R.
- this symmetry is orthogonal.
- the shape of the contour 19 of the shell can be chosen so that this contour 19 also has a symmetry of reflection, preferably orthogonal, with respect to the line R.
- the aforementioned symmetry of the contour 3 has the advantage of making it possible to avoid an imbalance and to obtain a balanced ferrule.
- contours 3 or 19 there is not necessarily symmetry of the contours 3 or 19 with respect to the line R.
- a non-symmetrical contour 3 the asymmetry of which would for example be compensated for by a lug located in the same place as the lug 17 of the figures 3 and 6 to 11 .
- the center B of the central opening 2 can be distinct from the center C of the contour 19 of the shell, as shown on the figure 1 .
- the contour 3 of the central opening 2 comprises a first support part 4 and a second support part 5.
- These support parts 4,5 intended to cooperate with the axis of a pendulum, are preferably symmetrical to each other with respect to slot 1.
- these parts 4,5 are rectilinear, that is to say that their radius of curvature on the side of the central opening 2 is infinite.
- the support parts 4,5 can start from points located at the edge of the slot 1.
- the arm 6 carries, on its side facing the center B, the first straight support part 4 of the outline of the opening.
- the arm 7 carries the second straight support part 5.
- the role of the arms 6,7 is on the one hand to constitute the points of support of the ferrule on the pendulum axis.
- the presence of recesses 23,24 between the arms and the neighboring part of the ferrule makes it possible to maximize the length of the elastic zone of the ferrule, which then extends to the slot and covers an arc almost 180 ° on each half. Without the arms 6,7 and the recesses 23,24, the length of the elastic parts would be much lower and the stress level would be higher for an equivalent tightening at the level of the axis. In addition, the stresses can be distributed over a greater distance. We therefore see that the presence of arms 6,7 defined by the recesses 23,24 between the arms 6,7 and the neighboring part of the shell gives the latter great robustness.
- the arms 6,7 are generally not considered to be elastic arms because, when hunting of the ferrule on the pendulum axis, in principle, they do not deform elastically.
- the slot of the ferrule defines two halves of ferrule 21, 22 on either side of the straight line R, indicated by dashed lines on the figure 2 . It is the shapes of these two halves 21, 22 which give the shell its elasticity. This fact is confirmed by simulations of hunting the shell of the figure 2 which show that there is no elastic deformation of the arms 6,7 following the driving out of an axis.
- the length and the shape of the arms 6,7 which are defined by the recesses 23,24 situated between the arms 6,7 and the ferrule, on the side opposite to the center B, are second order parameters.
- the shape of the shell halves 21,22 is important and is chosen so as to distribute the elastic stresses in the most balanced way possible along the contour of the shell and on the two shell halves 21,22, all by guaranteeing both sufficient elasticity to allow the driving of pendulum axes whose diameter is included in the desired tolerance range and a stress level which always remains clearly below the elastic limit of the material. This choice can be made, for example, following an optimization of the shape of the shell halves 21, 22 using a digital simulation program implementing the finite element method, such as ANSYS.
- the presence of the arms 6,7 makes it possible to bring the corresponding support point (s) closer to the center of the shell, without thickening the shell halves 21,22, therefore without the stiffen. This therefore makes it possible to optimize the placement of the support points and the elastic deformation properties of the ferrule separately (amplitude of deformation, distribution of stresses, etc.).
- each arm 6.7 opposite the center B can also be straight.
- each arm 6,7 is preferably provided at its free end and on the side opposite to the center B, with a bulge 10,11. This bulge makes it possible to further optimize the balancing by adding material but it does not serve as a fulcrum or abutment.
- the support parts can be concave, that is to say that the radius of curvature of the support parts can be positive on the side of the central opening 2.
- the central opening 2 is intended to receive a pendulum axis which generally has a circular cross section. Depending on the shape of the central opening 2, there may therefore be more or less contact points 29 between the balance axle and the split ferrule.
- the contour 3 of the central opening 2 may include a third support portion 12 situated opposite the slot 1.
- the tangent at the point 29 closest to the center B of the contour 3 of the central opening 2 is substantially perpendicular to the straight line R (or to the slot 1). This point 29 is the point of contact provided with the pendulum axis.
- the support part 12 is rectilinear, but it could also be convex or concave.
- the pendulum axis comes into contact with the central opening 2 at three places 29: on each of the first and second parts of straight support 4.5 of the arms 6.7 and on the third support part 12, just opposite the slot 1, at the point of intersection with the line R.
- the centers of the contours will move very slightly following the driving out of the pendulum axis .
- the outline of the opening 2 comprises a fourth support part 14 and a fifth support part 15.
- These support parts 14, 15 are symmetrical with one another with respect to the slot 1 and they meet at a point 16 preferably located opposite the slot 1.
- This configuration makes it possible to obtain four contact points 29 between the pendulum axis and the central opening 2: two contact points on the first and second support parts 4,5, which are convex in this example, and two other contact points on the fourth and fifth support parts 14,15, which are rectilinear in this example.
- the support parts 4,5 have, on the side of the central opening 2, a negative radius of curvature while the support parts 14,15 have an infinite radius of curvature.
- each half of the shell 21, 22 has been maximized by defining recesses 25, 26 and arms 27, 28 carrying the bearing parts 14, 15.
- the shape of the shell halves 21, 22 is chosen so as to distribute the elastic stresses homogeneously along the contour of the shell.
- FIG 5 On the figure 5 is shown a split ferrule with arms 6,7 and 27,28 carrying support parts 4,5 and 14,15 rectilinear, as on the figure 2 , but whose contour 3 of the central opening 2 provides four points of contact with the balance axis.
- FIG. 6 On the figure 6 a split ferrule with arms 6,7 and 27,28 is shown, but the outline 3 of the central opening 2 of which defines four points of contact with the periphery of the pendulum axis.
- the bearing parts 4,5 and 14,15 are in this example all convex, that is to say that their radius of curvature on the side of the center B of the central opening 2 is negative.
- the tangents at the contact points provided between the parts 4,5 and the balance axis and / or between the parts 14,15 and the balance axis can form an angle between them greater than or equal to 60 degrees, even obtuse, on the center side of the central opening 2.
- the contour 19 of the ferrule according to the invention is generally substantially circular. “Substantially” means here that it is not 100% due to the existence of slot 1 and, if applicable, as can be seen in the figures 3 and 6 , due to the presence, at a point located near the point diametrically opposite to the slot 1, of a lug 17.
- the latter is preferably located upstream of the point of attachment or departure of the spiral spring (if the we refer to the direction of movement of the hairspring from the inside to the outside).
- the contour 19 can also be non-circular, even asymmetrical. It could thus protect the turns in the event of an impact.
- the split ferrule according to the invention is, by definition, intended to support a spiral spring. The beginning of it is visible on the figures 3 and 6 , where it has the reference number 18.
- This spiral spring 18 is preferably connected to the ferrule at a point located on the contour 19 thereof, substantially opposite the slot 1. This makes it possible to minimize the displacement of the spiral spring during mounting of the ferrule on an axis balance and avoid affecting the chronometric properties.
- the example of the figure 2 where one of the contact points 29 is located on or near the straight line R, facing the slot 1, is particularly favorable.
- the spiral spring can be a part fixed to the ferrule, but, preferably, it forms only one part with it.
- balancing holes 20 are provided in a part of the shell opposite to the slot 1, if necessary, even in the lug 17, as can be seen in the variants represented on the figures 7 to 10 .
- the point A representing the longitudinal axis of symmetry of the balance, the center B of the contour 3 of the central opening 2 of the shell and the geometric center C of the contour 19 of the shell can all be distinct.
- the split ferrule according to the invention is dimensioned both to maintain the spiral spring 18 on the pendulum axis during the operation of the oscillator (minimum tightening torque) and also to be able to be assembled with axes whose diameters have fluctuations and this, without breaking or undergoing plastic deformation if the diameter of the pendulum axis remains within a tolerance interval given.
- This point is particularly important if the shell is made of a material such as silicon which does not have a plastic deformation domain, since the risk of breakage or cracking is significant if the stress exceeds the limit of elastic deformation.
- the support parts 4,5 and / or 14,15 and / or 12 can be rectilinear ( Fig. 1.2 , 5 , 7.8 , 9.10 and 13 ), that is to say that they can have an infinite radius of curvature, convex, that is to say with a negative radius of curvature on the side of the central opening 2 (cf. parts 4,5 of the Fig. 4 , Fig. 6 , Fig. 11 ), or concaves ( Fig. 3 ), i.e. with a positive radius of curvature.
- the positive radius of curvature is greater than 0.62 times the diameter d max of the largest circle that can be drawn inside the contour of the central opening, a circle which is also called “Inscribed circle” in the following description.
- This circle corresponds approximately to circle 13 of center A visible on the figures 2 and 4 , with the difference that the inscribed circle has a slightly smaller diameter than that of the pendulum axis.
- a positive radius of curvature greater than 0.62 times the diameter d max of the inscribed circle makes it possible to define a single point of contact between the bearing part and the balance axis: in the case of the figure 3 , a radius of curvature greater than 0.62 times the diameter d max of the inscribed circle results in a space of approximately 5 microns at the ends of the arms if the contact point is placed in the center of the arms, which is suitable for defining a single point-of-contact. Similarly, a radius of curvature greater than the diameter d max of the inscribed circle results in a space of 10 microns at the ends of the arms. A radius of curvature greater than 0.75 times the diameter d max of the inscribed circle is also an appropriate value.
- the tangents to the support points 4,5 and / or 14,15 at the points of contact provided with the pendulum axis form between them, on the side of the center B of the central opening 2, an angle preferably greater than or equal to 60 degrees. Even more preferably, it is an obtuse angle.
- the support parts 4,5 and / or 14,15 and / or 12 are configured so as to each define a precise point of contact 29 with the axis of the pendulum.
- the fact of being able to define the configuration and the number of support points makes it possible to best balance the forces which act on the pendulum axis. This is not the case with a ferrule according to the prior art, the radius of the internal opening of which is substantially equal to or less than the radius of the pendulum axis, and the support points of which are not defined.
- the split ferrule according to the invention can be made of any suitable material, such as silicon, quartz, diamond, etc. It can be manufactured using well-known micro-manufacturing techniques, such as the DRIE processes for silicon, quartz or diamond or UV-Liga for Ni or NiP. These techniques have the advantage of making it possible to easily produce very complex shapes or geometries.
- the shape of the slot 1 is not necessarily elongated.
- a split ferrule according to the invention is shown, the slot 1 of which has rounded ends.
- the arms 6,7 carry convex support parts and that the third support part 12 is also convex.
- a ferrule is represented, the support points of which form an equilateral triangle and are arranged at 120 ° from each other, thus allowing a balance of forces at the level of the tightening of the axis.
- each support part is provided to define a single point of contact with the pendulum axis.
- the support parts can show different radii of curvature between them. In addition, it is also possible to vary the radius of curvature along the same support part.
- each half of ferrule 21, 22 has the advantageous characteristic of deforming elastically, that is to say without plastic deformation or risk of breakage.
- the figure 12 is a graph representing the evolution of the holding torque M of the ferrule as a function of the diameter D of the axis of a pendulum, for split ferrules according to the invention and non-split ferrules according to the prior art, namely , the aforementioned European patent application no. EP 2 112 565 .
- the parts were all made of silicon using the DRIE process.
- the pendulum axes used had a diameter between 0.495 and 0.512 mm.
- the desired tolerance interval is in this case between 0.500 and 0.506 mm.
- the diameter of the inscribed circle d max was 0.485 mm.
- the holding torque is greater than the minimum torque required, even for small diameters below the minimum tolerance, and the dependence on the diameter is much less (slope lower by a factor of three and six , respectively, to those of the ferrules of the prior art).
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Abstract
L'invention concerne une virole fendue dont l'ouverture centrale (2) destinée à recevoir un axe de balancier est non circulaire. La virole fendue comprend une fente (1). Le contour (3) de l'ouverture centrale (2) comporte un nombre supérieur à deux et limité de parties d'appui (4, 5, 12, 14, 15) destinées à coopérer avec ledit axe de balancier. Au moins deux parties d'appui (4, 5 ou 14, 15) sont situées sur des bras (6, 7 ou 27 ,28) et la virole comprend des évidements (23, 24, 25, 26) entre les bras et la partie voisine des bras.The invention relates to a split ferrule whose central opening (2) intended to receive a pendulum axis is non-circular. The split ferrule includes a slot (1). The contour (3) of the central opening (2) comprises a number greater than two and limited by support parts (4, 5, 12, 14, 15) intended to cooperate with said balance axis. At least two support parts (4, 5 or 14, 15) are located on arms (6, 7 or 27, 28) and the ferrule comprises recesses (23, 24, 25, 26) between the arms and the next to the arms.
Description
L'invention concerne une virole fendue dont le contour de l'ouverture centrale destinée à recevoir un axe de balancier est non circulaire.The invention relates to a split ferrule whose contour of the central opening intended to receive a pendulum axis is non-circular.
L'invention se rapporte également à un ensemble virole-ressort spiral ainsi qu'à un procédé de montage d'une pièce d'horlogerie.The invention also relates to a spiral ring-spring assembly and to a method of mounting a timepiece.
L'un des points critiques pour l'utilisation d'un ressort spiral dans un mouvement d'horlogerie de haute précision est la fiabilité de la fixation du spiral sur l'axe du balancier. Cette fixation se fait en général au moyen d'une virole, qui était à l'origine un petit cylindre fendu destiné à être chassé sur l'axe de balancier et percé latéralement pour recevoir l'extrémité intérieure du ressort spiral.One of the critical points for the use of a balance spring in a high-precision timepiece movement is the reliability of the fixation of the balance spring on the balance axis. This fixing is generally done by means of a ferrule, which was originally a small split cylinder intended to be driven on the pendulum axis and drilled laterally to receive the inner end of the spiral spring.
Ainsi, le brevet suisse n°
La demande de brevet européen publiée sous le numéro
La demande de brevet français numéro
Il apparaît donc que de nombreuses solutions pour le chassage d'une virole sur un axe sont connues, et elles sont bien adaptées aux matériaux habituels comme l'acier qui possèdent un domaine de déformation plastique. En effet, le diamètre de l'ouverture prévue pour recevoir l'axe de balancier est plus faible que le diamètre de l'axe de balancier, de façon à assurer une bonne tenue de l'axe après chassage. Cette différence de diamètre est en général absorbée au moins en partie par une déformation plastique du matériau de la virole.It therefore appears that many solutions for driving out a ferrule on an axis are known, and they are well suited to usual materials such as steel which have a plastic deformation domain. In fact, the diameter of the opening intended to receive the pendulum axis is smaller than the diameter of the pendulum axis, so as to ensure good resistance of the axis after driving out. This difference in diameter is generally absorbed at least in part by plastic deformation of the shell material.
Ceci rend ces solutions peu adaptées aux viroles ou aux ensembles virole-spiral réalisés en un matériau comme le silicium, le quartz ou le diamant. En effet, ces matériaux, usinables par des techniques comme la gravure profonde (DRIE), ne possèdent pas de domaine de déformation plastique, ce qui les rend cassants dès que les contraintes dans le matériau dépassent la limite élastique.This makes these solutions unsuitable for ferrules or ferrule-hairspring assemblies made of a material such as silicon, quartz or diamond. Indeed, these materials, which can be machined by techniques such as deep etching (DRIE), do not have a plastic deformation domain, which makes them brittle as soon as the stresses in the material exceed the elastic limit.
Par exemple, le brevet suisse n°
Le brevet suisse n°
Par ailleurs, la demande de brevet européen publiée sous le numéro
Les solutions décrites dans ce document donnent entière satisfaction pour des pièces mécaniques comme des roues. Cependant, elles montrent quelques inconvénients pour réaliser des viroles qui ont en général une épaisseur plus faible que des planches de roue, comme d'offrir une faible plage de tolérance pour les diamètres des axes sur lesquels les viroles doivent être chassées.The solutions described in this document are entirely satisfactory for mechanical parts such as wheels. However, they show some disadvantages for making ferrules which generally have a thickness thinner than wheel plates, such as offering a small tolerance range for the diameters of the axes on which the ferrules must be driven.
Le but majeur de l'invention est de proposer une virole qui puisse être chassée sur des axes de diamètres différents tout en garantissant un couple de tenue en rotation adéquat sans aller au-delà de la limite élastique du matériau et qui ne provoque pas de balourd.The main object of the invention is to provide a ferrule which can be driven out on axes of different diameters while guaranteeing an adequate rotational holding torque without going beyond the elastic limit of the material and which does not cause unbalance .
Si les viroles fendues existent depuis très longtemps, il n'a jamais été proposé, jusqu'à présent, de virole fendue ayant une ouverture centrale qui n'est pas circulaire et dont les propriétés d'élasticité permettent d'atteindre le but précité, en particulier pour un matériau sans domaine de déformation plastique comme le silicium, le quartz ou le diamant.If the split ferrules have been around for a very long time, there has never been proposed, until now, a split ferrule having a central opening which is not circular and whose elasticity properties allow the above-mentioned purpose to be achieved, in particular for a material without plastic deformation domain such as silicon, quartz or diamond.
Ainsi, un aspect de l'invention a pour objet une virole fendue, notamment une virole fendue dont l'ouverture centrale destinée à recevoir un axe de balancier est non circulaire, ayant pour particularité que :
- 1.- le contour de son ouverture centrale comporte un nombre supérieur à deux et défini ou limité de parties d'appui destinées à coopérer avec ledit axe de balancier.
- 1.- the contour of its central opening comprises a number greater than two and defined or limited of the support parts intended to cooperate with said pendulum axis.
Outre sa forme originale, il a été constaté que cette virole donne entièrement satisfaction, en ce sens qu'elle peut accommoder des axes de diamètres différents, qu'elle présente, une fois montée par exemple sur un axe de balancier, un excellent couple de tenue sur cet axe et que son taux de casse lors du chassage pour l'assemblage à un axe est pratiquement nul.In addition to its original shape, it has been found that this ferrule is entirely satisfactory, in the sense that it can accommodate axes of different diameters, which it presents, once mounted for example on a pendulum axis, an excellent torque of held on this axis and that its breakage rate during hunting for assembly to an axis is practically zero.
Des caractéristiques supplémentaires et avantageuses de la virole selon l'invention définie au point 1 ci-dessus sont déclinées aux points 2 à 19 ci-dessous :
- 2.- Virole fendue dans laquelle le rayon de courbure des parties d'appui, du côté de l'ouverture centrale, est négatif, infini ou supérieur à 0,62 fois le diamètre dmax du cercle le plus grand que l'on peut tracer à l'intérieur du contour de l'ouverture centrale.
- 3.- Virole fendue selon le
point 2, dont le contour de l'ouverture centrale présente sensiblement une symétrie de réflexion orthogonale par rapport à une droite R passant par la fente de la virole ainsi que par le centre du contour de l'ouverture centrale et parallèle au plan contenant la face supérieure de la virole. - 4.- Virole fendue selon l'un des
points 1 à 3, dont le centre du contour de l'ouverture centrale est distinct du centre du contour de la virole. - 5.- Virole fendue selon l'un des
points 1 à 4, dans laquelle le rayon de courbure des parties d'appui est négatif. - 6.- Virole fendue selon l'un des
points 1 à 4, dans laquelle le rayon de courbure des parties d'appui est supérieur à 0,75 fois le diamètre dmax du cercle le plus grand que l'on peut tracer à l'intérieur de l'ouverture centrale. - 7. Virole fendue selon le
point 6, dans laquelle le rayon de courbure des parties d'appui est supérieur au diamètre dmax du cercle le plus grand que l'on peut tracer à l'intérieur de l'ouverture centrale. - 8.- Virole fendue selon l'un des
points 1 à 4, dans laquelle les parties d'appui sont rectilignes du côté du centre du contour de l'ouverture centrale. - 9.- Virole fendue selon l'un des
points 3 à 8, comportant au moins un couple de parties d'appui situées de part et d'autre de la droite R. - 10.- Virole fendue selon le
point 9, comportant au moins un couple de parties d'appui rectilignes dans lequel l'une des parties d'appui rectilignes forme avec l'autre partie d'appui rectiligne un angle supérieur ou égal à 60 degrés du côté du centre du contour de l'ouverture centrale. - 11.- Virole fendue selon le
point 10, dans laquelle les parties d'appui rectilignes forment entre elles un angle obtus du côté du centre du contour de l'ouverture centrale. - 12.- Virole fendue selon l'un des
points 1 à 11, dans laquelle au moins une partie d'appui est située sur un bras. - 13.- Virole fendue selon le
point 12, dans laquelle au moins deux parties d'appui sont situées sur des bras disposés de part et d'autre de la droite R. - 14.- Virole selon le
point 12 ou 13, dans laquelle le (ou les) bras présente(nt), à son (leurs) extrémité(s) libre(s), sur un côté opposé au centre du contour de l'ouverture centrale, un renflement convexe. - 15.- Virole fendue selon l'un des
points 1 à 14, comportant trois ou quatre parties d'appui. - 16.- Virole fendue selon l'un des
points 1 à 15, comportant, sur le contour de la virole, en un point situé à proximité du point diamétralement opposé à la fente, un ergot. - 17.- Virole fendue selon l'un des
points 1 à 16, comportant des trous d'équilibrage. - 18.- Virole fendue selon l'un des
points 1 à 17, constituée d'un matériau dépourvu de domaine de déformation élastique. - 19.- Virole fendue selon le
point 18, constituée de silicium, de quartz ou de diamant.
Par ailleurs, l'invention se rapporte également à un ensemble virole-ressort spiral résumé aupoint 20 suivant : - 20.- Ensemble virole-ressort spiral comprenant une virole selon l'un des
points 1 à 19 ainsi qu'un ressort spiral relié en un point situé sur le contour de la virole, sensiblement en regard de la fente.
- 2.- Split ferrule in which the radius of curvature of the support parts, on the side of the central opening, is negative, infinite or greater than 0.62 times the diameter d max of the largest circle that can be trace inside the outline of the central opening.
- 3.- Split ferrule according to
point 2, the contour of the central opening of which has substantially symmetry of orthogonal reflection with respect to a straight line R passing through the slot of the ferrule as well as through the center of the contour of the central opening and parallel to the plane containing the upper face of the shell. - 4.- Split ferrule according to one of
points 1 to 3, the center of the contour of the central opening is distinct from the center of the contour of the ferrule. - 5.- Split ferrule according to one of
points 1 to 4, in which the radius of curvature of the support parts is negative. - 6.- Split ferrule according to one of
points 1 to 4, in which the radius of curvature of the support parts is greater than 0.75 times the diameter d max of the largest circle that can be drawn at l inside the central opening. - 7. Split ferrule according to
point 6, in which the radius of curvature of the support parts is greater than the diameter d max of the largest circle that can be traced inside the central opening. - 8.- Split ferrule according to one of
points 1 to 4, in which the support parts are rectilinear on the side of the center of the contour of the central opening. - 9.- Split ferrule according to one of
points 3 to 8, comprising at least a couple of support parts located on either side of the straight line R. - 10.- Split ferrule according to
point 9, comprising at least a couple of rectilinear support parts in which one of the rectilinear support parts forms with the other rectilinear support part an angle greater than or equal to 60 degrees from the center side of the outline of the central opening. - 11.- Split ferrule according to
point 10, in which the rectilinear support parts form an obtuse angle between them on the side of the center of the contour of the central opening. - 12.- Split ferrule according to one of
points 1 to 11, in which at least one support part is located on an arm. - 13.- Split ferrule according to
point 12, in which at least two support parts are located on arms arranged on either side of the straight line R. - 14.- Ferrule according to
12 or 13, in which the arm (s) present (s), at its end (s) free (s), on a side opposite the center of the contour of the central opening, a convex bulge.point - 15.- Split ferrule according to one of
points 1 to 14, comprising three or four support parts. - 16.- Split ferrule according to one of
points 1 to 15, comprising, on the contour of the ferrule, at a point located near the point diametrically opposite the slot, a lug. - 17.- Split ferrule according to one of
points 1 to 16, including balancing holes. - 18.- Split ferrule according to one of
points 1 to 17, made of a material devoid of elastic deformation domain. - 19.- Split ferrule according to
point 18, made of silicon, quartz or diamond.
Furthermore, the invention also relates to a spiral ring-spring assembly summarized in the following point 20: - 20.- Ferrule-spiral spring assembly comprising a ferrule according to one of
points 1 to 19 as well as a spiral spring connected at a point located on the contour of the ferrule, substantially facing the slot.
Le point 21 ci-dessous fournit des caractéristiques supplémentaires et avantageuses de l'ensemble virole-ressort spiral selon l'invention :
21.- Ensemble virole-ressort spiral selon le point 20, la virole et le ressort spiral étant d'un seul tenant.
21.- Ferrule-spiral spring assembly according to
L'invention a également trait à un procédé de montage d'une pièce d'horlogerie, comprenant le chassage d'un ensemble virole-ressort spiral selon l'invention sur un axe de balancier.The invention also relates to a method for mounting a timepiece, comprising driving out a ferrule-spiral spring assembly according to the invention on a pendulum axis.
Selon un autre aspect de l'invention, une virole est définie par la revendication 1.According to another aspect of the invention, a ferrule is defined by
Différents modes de réalisation de la virole selon cet autre aspect sont définis par les revendications dépendantes 2 à 12.Different embodiments of the shell according to this other aspect are defined by
Selon cet autre aspect de l'invention, des ensembles sont définis par les revendications 13 et 14.According to this other aspect of the invention, sets are defined by
Selon cet autre aspect de l'invention, une pièce d'horlogerie est définie par la revendication 15.According to this other aspect of the invention, a timepiece is defined by
Sauf incompatibilité logique ou technologique, toutes les caractéristiques des différents aspects peuvent être combinées entre elles.Unless there is logical or technological incompatibility, all the characteristics of the different aspects can be combined with one another.
D'autres caractéristiques et avantages de la virole fendue selon l'invention vont maintenant être décrits en détail dans l'exposé qui suit et qui est donné en référence aux figures annexées qui représentent schématiquement, en vue de dessus :
-
figure 1 : une virole selon un premier mode de réalisation de l'invention ; -
figures 2 à 11 : des variantes de la virole selon l'invention ; -
figure 12 : un graphe représentant l'évolution du couple de tenue de la virole en fonction du diamètre de l'axe de balancier sur lequel est chassée ; et -
figure 13 : une autre variante de la virole selon l'invention.
-
figure 1 : a ferrule according to a first embodiment of the invention; -
figures 2 to 11 : variants of the shell according to the invention; -
figure 12 : a graph representing the evolution of the holding torque of the ferrule as a function of the diameter of the pendulum axis on which is driven; and -
figure 13 : another variant of the shell according to the invention.
La virole fendue selon l'invention est représentée sur la
Comme on peut le voir, elle comporte une fente 1 et une ouverture centrale 2 qui est destinée à recevoir un axe de balancier.As can be seen, it has a
Le contour 3 de l'ouverture centrale 2 n'est pas circulaire mais il présente de préférence une certaine symétrie.The
Comme la face supérieure d'une virole est généralement plane, on peut définir un plan la contenant et, dans ce plan, une droite R passant à la fois par le centre B de l'ouverture centrale 2 et par le milieu de la fente 1.As the upper face of a ferrule is generally flat, it is possible to define a plane containing it and, in this plane, a straight line R passing both through the center B of the
La forme du contour 3 de l'ouverture centrale 2 est alors de préférence choisie de telle sorte que ce contour 3 présente une symétrie de réflexion par rapport à la droite R. De préférence, cette symétrie est orthogonale.The shape of the
De même, la forme du contour 19 de la virole peut être choisie de telle sorte que ce contour 19 présente également une symétrie de réflexion, préférentiellement orthogonale, par rapport à la droite R.Likewise, the shape of the
Bien entendu, il s'agit là simplement d'une manière de définir la géométrie préférée de l'ouverture centrale 2 car, comme on peut le voir particulièrement sur la
La symétrie précitée du contour 3 a l'avantage de permettre d'éviter un balourd et d'obtenir une virole équilibrée.The aforementioned symmetry of the
Cependant, il n'y a pas forcément symétrie des contours 3 ou 19 par rapport à la droite R. D'ailleurs, on peut voir sur les
Le centre B de l'ouverture centrale 2 peut être distinct du centre C du contour 19 de la virole, comme cela apparaît sur la
Selon l'invention, le contour 3 de l'ouverture centrale 2 comporte une première partie d'appui 4 et une deuxième partie d'appui 5. Ces parties d'appui 4,5, destinées à coopérer avec l'axe d'un balancier, sont de préférence symétriques l'une de l'autre par rapport à la fente 1. Sur la
Les parties d'appui 4,5 peuvent partir de points situés au bord de la fente 1.The
Selon un mode de réalisation avantageux de l'invention visible sur la
Le bras 6 porte, sur son côté tourné vers le centre B, la première partie d'appui rectiligne 4 du contour de l'ouverture. De façon symétrique, le bras 7 porte la deuxième partie d'appui rectiligne 5.The
Le rôle des bras 6,7 est d'une part de constituer les points d'appui de la virole sur l'axe du balancier. D'autre part, la présence d'évidements 23,24 entre les bras et la partie voisine de la virole permet de maximiser la longueur de la zone élastique de la virole, qui s'étend alors jusqu'à la fente et couvre un arc de presque 180° sur chaque moitié. Sans les bras 6,7 et les évidements 23,24, la longueur des parties élastiques serait nettement inférieure et le niveau de contrainte serait plus élevé pour un serrage équivalent au niveau de l'axe. De plus, les contraintes peuvent être réparties sur une distance plus grande. On voit donc que la présence de bras 6,7 définis par les évidements 23,24 entre les bras 6,7 et la partie voisine de la virole confère à cette dernière une grande robustesse.The role of the
Toutefois, les bras 6,7 ne sont en général pas considérés comme des bras élastiques car, lors du chassage de la virole sur l'axe de balancier, en principe, ils ne se déforment pas élastiquement. En effet, la fente de la virole définit deux moitiés de virole 21,22 de part et d'autre de la droite R, indiquées par des traitillés sur la
Ainsi, la longueur et la forme des bras 6,7 qui sont définies par les évidements 23,24 situés entre les bras 6,7 et la virole, du côté opposé au centre B, sont des paramètres de second ordre. En revanche, la forme des moitiés de virole 21,22 est importante et est choisie de façon à répartir les contraintes élastiques de la façon la plus équilibrée possible le long du contour de la virole et sur les deux moitiés de virole 21,22, tout en garantissant à la fois une élasticité suffisante pour permettre le chassage d'axes de balancier dont le diamètre est compris dans l'intervalle de tolérance souhaité et un niveau de contrainte qui reste toujours nettement inférieur à la limite élastique du matériau. Ce choix peut être réalisé, par exemple, suite à une optimisation de la forme des moitiés de virole 21,22 à l'aide d'un programme de simulation numérique mettant en œuvre la méthode des éléments finis, comme ANSYS.Thus, the length and the shape of the
De plus, la présence des bras 6,7 permet de rapprocher le(s) point(s) d'appui correspondant(s) du centre de la virole, et ce, sans épaissir les moitiés de virole 21,22, donc sans les rigidifier. Ceci permet donc d'optimiser de façon séparée le placement des points d'appui et les propriétés de déformation élastique de la virole (amplitude de déformation, répartition des contraintes...).In addition, the presence of the
Comme on peut le voir sur la
Cependant, comme cela est visible sur la
Comme cela est visible sur la
L'ouverture centrale 2 est destinée à recevoir un axe de balancier qui a en général une section transversale circulaire. En fonction de la forme de l'ouverture centrale 2, il peut donc y avoir plus ou moins de points de contact 29 entre l'axe du balancier et la virole fendue.The
En se reportant à nouveau à la
Sur cette figure, la partie d'appui 12 est rectiligne, mais elle pourrait être aussi convexe ou concave.In this figure, the
Ainsi, on voit que l'axe du balancier, dont le pourtour est symbolisé par un cercle 13 de centre A sur la figure, entre en contact avec l'ouverture centrale 2 à trois endroits 29 : sur chacune des première et deuxième parties d'appui rectilignes 4,5 des bras 6,7 et sur la troisième partie d'appui 12, juste en face de la fente 1, au point d'intersection avec la droite R. A ce propos, il est évident que les centres des contours vont se déplacer très légèrement suite au chassage de l'axe du balancier.Thus, it can be seen that the pendulum axis, the periphery of which is symbolized by a
Sur la
Ainsi, sur la
De plus, la partie élastique de chaque moitié de virole 21,22 a été maximisée en définissant des évidements 25, 26 et des bras 27,28 portant les parties d'appui 14,15. A nouveau, la forme des moitiés de virole 21,22 est choisie de façon à répartir les contraintes élastiques de façon homogène le long du contour de la virole.In addition, the elastic part of each half of the
Sur la
Sur la
Comme on peut le voir sur la
Le contour 19 de la virole selon l'invention est généralement sensiblement circulaire. « Sensiblement » signifie ici qu'il ne l'est pas à 100% du fait de l'existence de la fente 1 et, le cas échéant, comme on peut le voir sur les
La virole fendue selon l'invention, est, par définition, destinée à supporter un ressort spiral. Le début de celui-ci est visible sur les
Ce ressort spiral 18 est de préférence relié à la virole en un point situé sur le contour 19 de celle-ci, sensiblement en regard de la fente 1. Ceci permet de minimiser le déplacement du ressort spiral lors du montage de la virole sur un axe de balancier et d'éviter d'affecter les propriétés chronométriques. L'exemple de la
Le ressort spiral peut être une pièce fixée sur la virole, mais, de préférence, il ne forme qu'une seule pièce avec elle.The spiral spring can be a part fixed to the ferrule, but, preferably, it forms only one part with it.
Avantageusement, des trous d'équilibrage 20 sont prévus dans une partie de la virole opposée à la fente 1, le cas échéant, même dans l'ergot 17, comme on peut le voir sur les variantes représentées sur les
Par ailleurs, comme on peut le noter en se reportant à nouveau aux
La virole fendue selon l'invention est dimensionnée à la fois pour maintenir le ressort spiral 18 sur l'axe du balancier lors du fonctionnement de l'oscillateur (couple de serrage minimal) et aussi pour pouvoir être assemblée avec des axes dont les diamètres présentent des fluctuations et ceci, sans se rompre ou subir de déformation plastique si le diamètre de l'axe du balancier reste à l'intérieur d'un intervalle de tolérance donné. Ce point est particulièrement important si la virole est réalisée en un matériau comme le silicium qui n'a pas de domaine de déformation plastique, car le risque de casse ou de fissure est significatif si la contrainte dépasse la limite de déformation élastique.The split ferrule according to the invention is dimensioned both to maintain the
Comme cela ressort de ce qui précède, les parties d'appui 4,5 et/ou 14,15 et/ou 12 peuvent être rectilignes (
De préférence et quel que soit le mode de réalisation envisagé, les tangentes aux points d'appui 4,5 et/ou 14,15 au niveau des points de contact prévus avec l'axe de balancier, forment entre elles, du côté du centre B de l'ouverture centrale 2, un angle de préférence supérieur ou égal à 60 degrés. Plus préférablement encore, il s'agit d'un angle obtus.Preferably and whatever the embodiment envisaged, the tangents to the support points 4,5 and / or 14,15 at the points of contact provided with the pendulum axis, form between them, on the side of the center B of the
Il convient de noter que les parties d'appui 4,5 et/ou 14,15 et/ou 12 sont configurées de manière à définir chacune un point de contact 29 précis avec l'axe du balancier. Le fait de pouvoir définir la configuration et le nombre des points d'appui permet d'équilibrer au mieux les forces qui agissent sur l'axe de balancier. Ceci n'est pas le cas avec une virole selon l'art antérieur dont le rayon de l'ouverture interne est sensiblement égal ou inférieur au rayon de l'axe du balancier, et dont les points d'appui ne sont pas définis.It should be noted that the
La virole fendue selon l'invention peut être constituée de tout matériau approprié, comme le silicium, le quartz, le diamant, etc. Elle peut être fabriquée au moyen des techniques bien connues de micro-fabrication, comme les procédés DRIE pour le silicium, le quartz ou le diamant ou UV-Liga pour le Ni ou le NiP. Ces techniques ont l'avantage de permettre de réaliser facilement des formes ou géométries très complexes.The split ferrule according to the invention can be made of any suitable material, such as silicon, quartz, diamond, etc. It can be manufactured using well-known micro-manufacturing techniques, such as the DRIE processes for silicon, quartz or diamond or UV-Liga for Ni or NiP. These techniques have the advantage of making it possible to easily produce very complex shapes or geometries.
Ainsi, par exemple, la forme de la fente 1 n'est pas nécessairement allongée. Sur la
Sur la
Bien entendu, les différentes formes d'exécution présentées ci-dessus ne sont pas limitatives, et les différentes caractéristiques peuvent être combinées entre elles, pour autant qu'elles soient compatibles. Ainsi, il est tout-à-fait possible de réaliser une virole qui combine les deux parties d'appui convexes 4,5 de la virole de la
Selon l'invention, chaque partie d'appui est prévue pour définir un point de contact unique avec l'axe de balancier.According to the invention, each support part is provided to define a single point of contact with the pendulum axis.
Les parties d'appui peuvent montrer des rayons de courbure différents entre elles. De plus, il est aussi possible de faire varier le rayon de courbure le long d'une même partie d'appui.The support parts can show different radii of curvature between them. In addition, it is also possible to vary the radius of curvature along the same support part.
Au cours du montage d'une pièce d'horlogerie, lorsque l'ensemble virole-ressort spiral selon l'invention est chassé sur un axe de balancier, chaque moitié de virole 21,22 a la particularité avantageuse de se déformer de façon élastique, c'est-à-dire sans déformation plastique ni risque de rupture.During the assembly of a timepiece, when the spiral ferrule-spring assembly according to the invention is driven out on a pendulum axis, each half of
La
Les pièces ont toutes été fabriquées en silicium suivant le procédé DRIE.The parts were all made of silicon using the DRIE process.
Les mesures ont été réalisées sur un appareil Variocouple de la société CSM Instruments.The measurements were carried out on a Variocouple device from the company CSM Instruments.
Les axes de balancier utilisés avaient un diamètre compris entre 0,495 et 0,512 mm. L'intervalle de tolérance souhaité est dans ce cas compris entre 0,500 et 0,506 mm. Le diamètre du cercle inscrit dmax était de 0,485 mm.The pendulum axes used had a diameter between 0.495 and 0.512 mm. The desired tolerance interval is in this case between 0.500 and 0.506 mm. The diameter of the inscribed circle d max was 0.485 mm.
Sur le graphe, les résultats des mesures effectuées avec une virole fendue selon la
Des essais réalisés avec des viroles fendues à ouverture centrale circulaire, similaire à celles décrites dans
Les résultats sont jugés satisfaisants lorsque le couple de tenue M est supérieur à la valeur de tenue minimale indiquée en pointillés.The results are considered satisfactory when the holding torque M is greater than the minimum holding value indicated in dotted lines.
On constate donc, d'une part, que la dépendance du couple de tenue M au diamètre est plus marquée pour les viroles selon l'art antérieur, et d'autre part, qu'il est difficile d'atteindre la valeur de tenue minimale lorsque le diamètre de l'axe est petit avec ces mêmes viroles selon l'art antérieur.It is therefore observed, on the one hand, that the dependence of the holding torque M on the diameter is more marked for the ferrules according to the prior art, and on the other hand, that it is difficult to reach the minimum holding value when the diameter of the axis is small with these same ferrules according to the prior art.
Avec la virole fendue selon l'invention, le couple de tenue est supérieur au couple minimal exigé, même pour les petits diamètres en dessous de la tolérance minimale, et la dépendance au diamètre est nettement moindre (pente inférieure d'un facteur trois et six, respectivement, à celles des viroles de l'art antérieur).With the split ferrule according to the invention, the holding torque is greater than the minimum torque required, even for small diameters below the minimum tolerance, and the dependence on the diameter is much less (slope lower by a factor of three and six , respectively, to those of the ferrules of the prior art).
De plus, aucune casse n'a été constatée lors du chassage, même pour les grands diamètres supérieurs à la tolérance maximale, alors que l'on observe typiquement 10% de casse avec les viroles selon l'art antérieur.In addition, no breakage was observed during hunting, even for large diameters greater than the maximum tolerance, while we typically observe 10% breakage with the ferrules according to the prior art.
Des simulations ont été effectuées avec la virole décrite dans le brevet suisse précité
Des simulations ont été effectuées avec la virole à deux pièces décrite dans le brevet suisse précité
Claims (15)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10405061 | 2010-03-25 | ||
EP11716801.3A EP2550566B1 (en) | 2010-03-25 | 2011-03-24 | Split collet with a non-circular opening |
PCT/CH2011/000061 WO2011116486A1 (en) | 2010-03-25 | 2011-03-24 | Split collet with a non-circular opening |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP11716801.3A Division EP2550566B1 (en) | 2010-03-25 | 2011-03-24 | Split collet with a non-circular opening |
Publications (1)
Publication Number | Publication Date |
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EP3623876A1 true EP3623876A1 (en) | 2020-03-18 |
Family
ID=42710624
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP19206569.6A Pending EP3623876A1 (en) | 2010-03-25 | 2011-03-24 | Split collar with non-circular opening |
EP11716801.3A Active EP2550566B1 (en) | 2010-03-25 | 2011-03-24 | Split collet with a non-circular opening |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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EP11716801.3A Active EP2550566B1 (en) | 2010-03-25 | 2011-03-24 | Split collet with a non-circular opening |
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US (1) | US9250610B2 (en) |
EP (2) | EP3623876A1 (en) |
JP (1) | JP5753252B2 (en) |
CN (1) | CN102893224B (en) |
WO (1) | WO2011116486A1 (en) |
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CN103334798B (en) * | 2013-07-10 | 2015-05-06 | 南京航空航天大学 | Multi-arc specially-shaped hole |
EP2952977A1 (en) * | 2014-06-03 | 2015-12-09 | Nivarox-FAR S.A. | Timepiece component made of welded materials |
CH709792A2 (en) * | 2014-06-18 | 2015-12-31 | Eta Sa Manufacture Horlogère Suisse | Mobile clock. |
EP3023844B1 (en) * | 2014-11-20 | 2017-06-28 | Nivarox-FAR S.A. | Flexible ferrule |
EP3106931A1 (en) * | 2015-06-16 | 2016-12-21 | Nivarox-FAR S.A. | Part with uncoupled welding surface |
EP3106928A1 (en) * | 2015-06-16 | 2016-12-21 | Nivarox-FAR S.A. | Manufacturing method comprising a modified bar turning step |
CH711218B1 (en) * | 2015-06-16 | 2019-06-14 | Nivarox Sa | Method of manufacturing a watch component |
EP3106929A1 (en) * | 2015-06-16 | 2016-12-21 | Nivarox-FAR S.A. | Part with improved welding surface |
EP3106935A1 (en) * | 2015-06-16 | 2016-12-21 | Nivarox-FAR S.A. | Method for manufacturing a part comprising a modified browning step |
EP3176650B1 (en) | 2015-12-02 | 2019-02-06 | Nivarox-FAR S.A. | Protection of a timepiece component with micro-machinable material |
CH713999B1 (en) * | 2017-07-18 | 2021-05-31 | Richemont Int Sa | Watch component intended to be fixed on an axis. |
CH714000A1 (en) * | 2017-07-18 | 2019-01-31 | Richemont Int Sa | Watchmaking assembly comprising a watch component fixed on an axis. |
CH714001B1 (en) * | 2017-07-18 | 2021-05-31 | Richemont Int Sa | Regulating organ for clockwork movement. |
EP3627238A1 (en) * | 2018-09-21 | 2020-03-25 | Nivarox-FAR S.A. | Elastic holding member for fixing a timepiece component on a support element |
EP3627235A1 (en) * | 2018-09-21 | 2020-03-25 | Nivarox-FAR S.A. | Elastic holding member for fixing a timepiece component on a support element |
EP3627234A1 (en) * | 2018-09-21 | 2020-03-25 | Nivarox-FAR S.A. | Elastic holding member for fixing a timepiece component on a support element |
EP3627236A1 (en) * | 2018-09-21 | 2020-03-25 | Nivarox-FAR S.A. | Elastic holding member for fixing a timepiece component on a support element |
EP3671364A1 (en) * | 2018-12-17 | 2020-06-24 | Nivarox-FAR S.A. | Elastic holding member for fixing a timepiece component on a support element |
EP3671361A1 (en) | 2018-12-18 | 2020-06-24 | Rolex Sa | Reinforced timepiece component |
EP3722889A1 (en) * | 2019-04-08 | 2020-10-14 | Nivarox-FAR S.A. | Elastic holding member for fixing a timepiece component on different support elements |
EP3779608A1 (en) * | 2019-08-16 | 2021-02-17 | Nivarox-FAR S.A. | Elastic holding member for a timepiece component on a support element |
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CH468662A (en) | 1966-08-29 | 1969-03-31 | Jean Claude Kullmann | Ferrule and hairspring assembly |
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FR2124243A1 (en) | 1971-02-10 | 1972-09-22 | Haas Carl | |
EP1302821A2 (en) | 2001-10-10 | 2003-04-16 | Franck Muller-Watchland SA | Balance-spring for time measuring apparatus |
EP1331528A2 (en) * | 2002-01-29 | 2003-07-30 | Franck Muller-Watchland SA | Escape pallets for timepiece |
EP1826635A1 (en) * | 2006-02-24 | 2007-08-29 | Patek Philippe S.A. | Resilient fastening device for horology |
EP1857891A1 (en) * | 2006-05-17 | 2007-11-21 | Patek Philippe Sa | Hairspring-collet assembly for a timepiece movement |
EP2112565A1 (en) | 2008-04-21 | 2009-10-28 | Rolex Sa | Micromechanical component with opening for attachment on an axe |
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CH613833GA3 (en) * | 1977-04-04 | 1979-10-31 | Elastic collet for timepiece balance | |
EP1445670A1 (en) | 2003-02-06 | 2004-08-11 | ETA SA Manufacture Horlogère Suisse | Balance-spring resonator spiral and its method of fabrication |
CN100451874C (en) * | 2003-03-11 | 2009-01-14 | 弗兰克.米勒.瓦差兰股份有限公司 | Coil spring of timer |
DE602004019183D1 (en) | 2004-04-06 | 2009-03-12 | Nivarox Sa | Spiral roll without deformation of the fixing radius of the spiral spring and manufacturing process such spiral roll |
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2011
- 2011-03-24 EP EP19206569.6A patent/EP3623876A1/en active Pending
- 2011-03-24 JP JP2013500293A patent/JP5753252B2/en active Active
- 2011-03-24 CN CN201180015758.7A patent/CN102893224B/en active Active
- 2011-03-24 WO PCT/CH2011/000061 patent/WO2011116486A1/en active Application Filing
- 2011-03-24 EP EP11716801.3A patent/EP2550566B1/en active Active
- 2011-03-24 US US13/636,384 patent/US9250610B2/en active Active
Patent Citations (10)
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CH252387A (en) | 1945-05-15 | 1947-12-31 | Marti Fritz | Ferrule for instant fixing of a balance spring. |
CH468662A (en) | 1966-08-29 | 1969-03-31 | Jean Claude Kullmann | Ferrule and hairspring assembly |
CH508233A (en) | 1969-02-25 | 1970-12-31 | Virola Sa | Oscillator with pendulum for timepiece |
FR2124243A1 (en) | 1971-02-10 | 1972-09-22 | Haas Carl | |
US3785028A (en) | 1971-02-10 | 1974-01-15 | Haas C Fa | Process for the production of hubs for spiral springs of timepieces |
EP1302821A2 (en) | 2001-10-10 | 2003-04-16 | Franck Muller-Watchland SA | Balance-spring for time measuring apparatus |
EP1331528A2 (en) * | 2002-01-29 | 2003-07-30 | Franck Muller-Watchland SA | Escape pallets for timepiece |
EP1826635A1 (en) * | 2006-02-24 | 2007-08-29 | Patek Philippe S.A. | Resilient fastening device for horology |
EP1857891A1 (en) * | 2006-05-17 | 2007-11-21 | Patek Philippe Sa | Hairspring-collet assembly for a timepiece movement |
EP2112565A1 (en) | 2008-04-21 | 2009-10-28 | Rolex Sa | Micromechanical component with opening for attachment on an axe |
Also Published As
Publication number | Publication date |
---|---|
US20130047437A1 (en) | 2013-02-28 |
EP2550566B1 (en) | 2019-11-06 |
JP2013524163A (en) | 2013-06-17 |
CN102893224A (en) | 2013-01-23 |
WO2011116486A1 (en) | 2011-09-29 |
EP2550566A1 (en) | 2013-01-30 |
CN102893224B (en) | 2015-10-21 |
JP5753252B2 (en) | 2015-07-22 |
US9250610B2 (en) | 2016-02-02 |
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