EP1705533A1 - Assembly of a mechanical part onto an axle - Google Patents

Assembly of a mechanical part onto an axle Download PDF

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Publication number
EP1705533A1
EP1705533A1 EP05006186A EP05006186A EP1705533A1 EP 1705533 A1 EP1705533 A1 EP 1705533A1 EP 05006186 A EP05006186 A EP 05006186A EP 05006186 A EP05006186 A EP 05006186A EP 1705533 A1 EP1705533 A1 EP 1705533A1
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EP
European Patent Office
Prior art keywords
axis
washer
wheel
silicon
passage
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
EP05006186A
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German (de)
French (fr)
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EP1705533B1 (en
Inventor
Frédéric Maier
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
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Patek Philippe SA Geneve
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Filing date
Publication date
Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to AT05006186T priority Critical patent/ATE463766T1/en
Priority to DE602005020416T priority patent/DE602005020416D1/en
Priority to EP05006186A priority patent/EP1705533B1/en
Priority to EP06003784A priority patent/EP1708045A3/en
Publication of EP1705533A1 publication Critical patent/EP1705533A1/en
Priority to HK07102833.0A priority patent/HK1095643A1/en
Application granted granted Critical
Publication of EP1705533B1 publication Critical patent/EP1705533B1/en
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Anticipated expiration legal-status Critical

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/34—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring onto the balance
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/021—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft
    • G04B13/022—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft with parts made of hard material, e.g. silicon, diamond, sapphire, quartz and the like
    • 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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • G04B35/00—Adjusting the gear train, e.g. the backlash of the arbors, depth of meshing of the gears

Definitions

  • the present invention relates to a device for fixing a silicon part, in particular a wheel, board, pinion or ferrule on an axis. More particularly, the fixing device relates to the fixing of such a silicon part on a steel shaft.
  • the silicon parts can not be crimped or driven traditionally on a steel shaft to ensure their fixation in a safe manner, the silicon does not deform plastically.
  • the silicon wheels may comprise arms or elastic portions defining bearing zones intended to cooperate with the axis. The elastic force due to the arms or elastic parts is not always sufficient to ensure the necessary attachment of the part in particular to prevent axial or radial displacement of this part relative to the axis both when mounting the mobile in a mechanism that when shocks to which this mechanism can be subjected.
  • the object of the present invention is to provide a device for assembling a silicon part on an axis making it possible to ensure the axial as well as the radial position of the part with respect to the axis during shocks or during manipulations. assembling such an assembly in a mechanism, shocks or manipulations that may involve axial or radial forces between the axis and the workpiece greater than the normal operating torque of this assembly,
  • the fixing device of a part, in particular of a board, wheel, ferrule or pinion in silicon on a steel shaft makes it possible to obviate the aforementioned drawbacks and to reach the goal stated above and is distinguished by the characteristics listed in claim 1 and following.
  • FIGS. 1 to 6 more particularly shows the assembly of a silicon escapement wheel 1 on the axis 2 of an escape wheel pinion 3 by means of the device according to FIG. present invention.
  • the axis 2 has come from a workpiece with the pinion 3 of the escape wheel and is made of steel "Sandvik 20 AP" for example, the escape wheel 1 being made of silicon as indicated above.
  • FIG. 2 illustrates, by way of example in plan, a silicon escapement wheel comprising a serge 5 provided with an escape toothing and three resilient arms or bridges 6 whose central portions 6a define cylindrical portions 7 which at rest are arranged on a cylinder of diameter D7.
  • the diameter D7 of the cylindrical passage defined by the cylindrical portions 7 of the arms 6 of the escape wheel 1 is slightly smaller than the diameter D4 of the bearing surface 4 of the axis 2 so that the wheel is driven on the axis by elastic deformation of his arms.
  • the tolerances on the diameter D4 of the bearing surface 4 of the axis 2 and on the passage formed by the cylindrical portions 7 of the arms of the wheel 1 are determined so that the forces caused during the installation of the wheel on the axis remain below the elastic limit of silicon.
  • the end of the axis 2 comprising the bearing surface 4 still has an intermediate portion 8 of smaller diameter than the diameter D4 of this bearing surface 4 and ends with a pivot 9 for the pivoting of this end of the axis 2 in a bearing.
  • the intermediate portion B of the axis 2 is connected to the bearing surface 4 of this axis 2 by a frustoconical chamfer 10.
  • the end 9 of this axis 2 is introduced into the cylindrical passage defined by the cylindrical portions 7 of the arms 6 of the escape wheel in order to force the axis in this direction. passage causing the elastic spacing of the arms 6 of the escape wheel 1 and the positioning of the cylindrical portions 7 of said arms against the bearing surface 4 of the axis 2.
  • This washer 11 is driven, glued, crimped, welded or fixed in any other way, on the intermediate portion 8 of the axis 2 and keeps the wheel 1 in axial position against the face of the pinion 3.
  • the fixing of this washer 11 sure the axis 2 is sufficiently strong to avoid axial, radial or angular relative displacement of the wheel 1 with respect to the axis 2 even under the effect of violent shocks or manipulations assembly of the assembly in a mechanism.
  • This washer 11 may also comprise lugs 13 coming for example to lodge against the outer face 14 of the central portions 6a of the elastic arms 6 of the wheel 1, which prevents any relative rotation between the wheel 1 and its axis 2 as well as any transverse displacement of the wheel 1 with respect to this axis 2.
  • the fixing device has been described with reference to a silicon wheel provided with three elastic arms. It goes without saying that the wheel could have only two elastic arms provided that the central passage is defined by three points of contact with these arms. One can also consider a wheel with more than three elastic arms. It is also obvious that this same device could be used for the attachment of a rigid radial arm wheel whose hub would be provided with a hole for centering on the intermediate portion 8 of the axis 2 by an introduction to friction of the wheel on this portion of the axis.
  • the washer 11 may comprise one or more lugs 12 and these do not cooperate with spokes or arms of the wheel 1, but with corresponding trainings that would include this wheel. In this way any transverse or angular displacement of the wheel relative to the axis is prohibited.
  • the assembly device described can be used to fix any piece 1 of silicon on an axis that may not include pinion 3.
  • the axis 2 comprises an axial stop, equivalent to the face of the pinion illustrated. against which is axially positioned the wheel 1.
  • the diameter of the end portion 26 of the axis 24 corresponds to that of the passage 22 of the ferrule 21 to allow adjustment without play.
  • This washer 28 also has a radial projection 30 emerging from one of its faces and intended to cooperate with the slot 23 of the ferrule.
  • the washer 2 applies the shell 21 against the stop 27 and the projection 30 cooperating with the slot 23 prevents any angular displacement of the ferrule with respect to the axis 24.
  • the silicon balance spring can be fixed to the axis 24 both axially and angularly using the washer 28.
  • the washer 28 can be crimped, glued, welded or otherwise fixed to the axis 24.
  • the originality of the present device for fixing a silicon part on an axis therefore lies in the fact that the mounting and the positioning of the part on the axis is done with little or no tightening to avoid any deterioration of the silicon part while ensuring correct axial and angular positioning.

Abstract

The device has a washer (11) presenting a central hole (12) of diameter smaller than the diameter of an intermediate portion (8) of an axle (2) of a pinion (3). The washer is fixed on the intermediate portion by bolstering, sticking, setting or welding and maintains an escape wheel (1) in an axial position against the side of the pinion. The washer has projections housed against an outer side of central parts (6a) of elastic arms (6) of the wheel.

Description

La présente invention a pour objet un dispositif de fixation d'une pièce en silicium, notamment d'une roue, planche, pignon ou virole sur un axe. Plus particulièrement le dispositif de fixation concerne la fixation d'une telle pièce en silicium sur un axe en acier. Les pièces en silicium ne peuvent pas être serties ou chassées traditionnellement sur un axe en acier pour assurer leur fixation de façon sûre, le silicium ne se déformant pas plastiquement. Pour obtenir un centrage précis, les roues en silicium peuvent comporter des bras ou parties élastiques définissant des zones d'appui destinées à coopérer avec l'axe. La force élastique due aux bras ou parties élastiques n'est pas toujours suffisante pour assurer la fixation nécessaire de la pièce notamment pour éviter tout déplacement axial ou radial de cette pièce par rapport à l'axe tant au montage du mobile dans un mécanisme que lors de chocs auquel ce mécanisme peut être soumis.The present invention relates to a device for fixing a silicon part, in particular a wheel, board, pinion or ferrule on an axis. More particularly, the fixing device relates to the fixing of such a silicon part on a steel shaft. The silicon parts can not be crimped or driven traditionally on a steel shaft to ensure their fixation in a safe manner, the silicon does not deform plastically. To achieve accurate centering, the silicon wheels may comprise arms or elastic portions defining bearing zones intended to cooperate with the axis. The elastic force due to the arms or elastic parts is not always sufficient to ensure the necessary attachment of the part in particular to prevent axial or radial displacement of this part relative to the axis both when mounting the mobile in a mechanism that when shocks to which this mechanism can be subjected.

La présente invention a pour but la réalisation d'un dispositif d'assemblage d'une pièce en silicium sur un axe permettant d'assurer la position tant axiale que radiale de la pièce par rapport à l'axe lors de chocs ou lors des manipulations au montage d'un tel assemblage dans un mécanisme, chocs ou manipulations qui peuvent faire intervenir des efforts axiaux ou radiaux entre l'axe et la pièce supérieurs au couple de fonctionnement normal de cet ensemble,The object of the present invention is to provide a device for assembling a silicon part on an axis making it possible to ensure the axial as well as the radial position of the part with respect to the axis during shocks or during manipulations. assembling such an assembly in a mechanism, shocks or manipulations that may involve axial or radial forces between the axis and the workpiece greater than the normal operating torque of this assembly,

Le dispositif de fixation d'une pièce, notamment d'une planche, roue, virole ou pignon en silicium sur un axe en acier permet d'obvier aux inconvénients précités et d'atteindre le but énoncé plus haut et se distingue par les caractéristiques énumérées à la revendication 1 et suivantes.The fixing device of a part, in particular of a board, wheel, ferrule or pinion in silicon on a steel shaft makes it possible to obviate the aforementioned drawbacks and to reach the goal stated above and is distinguished by the characteristics listed in claim 1 and following.

Le dessin annexé illustre schématiquement et à titre d'exemple deux formes d'exécution du dispositif de fixation selon l'invention.

  • La figure 1 est une vue en coupe axiale de l'ensemble pièce en silicium, ici une roue d'échappement, et de son axe solidarisé à l'aide du dispositif de fixation.
  • La figure 2 est une vue en plan de la roue en silicium.
  • La figure 3 est une vue en coupe de l'axe.
  • La figure 4 est une vue en plan d'une rondelle de fixation.
  • La figure 5 est une vue en coupe de la rondelle de fixation illustrée à la figure 4.
  • La figure 6 est une vue de dessus de la figure 1.
  • La figure 7 illustre vu en coupe l'ensemble spiral en silicium - axe de balancier solidarisé à l'aide du dispositif de fixation.
  • La figure 8 illustre vu en plan le spiral en silicium avec sa virole centrale venue d'une pièce.
  • La figure 9 est une vue en plan de la rondelle de fixation.
  • La figure 10 est une vue en coupe de la rondelle de fixation.
The accompanying drawing illustrates schematically and by way of example two embodiments of the fixing device according to the invention.
  • Figure 1 is an axial sectional view of the silicon part assembly, here an escape wheel, and its axis secured by means of the fixing device.
  • Figure 2 is a plan view of the silicon wheel.
  • Figure 3 is a sectional view of the axis.
  • Figure 4 is a plan view of a fixing washer.
  • FIG. 5 is a sectional view of the fixing washer illustrated in FIG. 4.
  • Figure 6 is a top view of Figure 1.
  • FIG. 7 is a cross sectional view of the spiral assembly made of silicon - balance shaft secured by means of the fixing device.
  • Figure 8 illustrates in plan the silicon spiral with its central ferrule from a room.
  • Figure 9 is a plan view of the fixing washer.
  • Figure 10 is a sectional view of the fixing washer.

La forme d'exécution illustrée aux figures 1 à 6 montre plus particulièrement l'assemblage d'une roue d'échappement 1 en silicium sur l'axe 2 d'un pignon de roue d'échappement 3 à l'aide du dispositif selon la présente invention.The embodiment illustrated in FIGS. 1 to 6 more particularly shows the assembly of a silicon escapement wheel 1 on the axis 2 of an escape wheel pinion 3 by means of the device according to FIG. present invention.

Dans l'exemple illustré l'axe 2 est venu d'une pièce de fabrication avec le pignon 3 de roue d'échappement et est réalisé en acier "Sandvik 20 AP" par exemple, la roue d'échappement 1 étant elle réalisée en silicium comme indiqué ci-dessus.In the illustrated example the axis 2 has come from a workpiece with the pinion 3 of the escape wheel and is made of steel "Sandvik 20 AP" for example, the escape wheel 1 being made of silicon as indicated above.

D'un côté du pignon 3, l'axe 2 comporte une portée 4 d'un diamètre D4 sur une longueur L.On one side of the pinion 3, the axis 2 comprises a bearing 4 of a diameter D4 on a length L.

La figure 2 illustre à titre d'exemple en plan une roue d'échappement en silicium comportant une serge 5 munie d'une denture d'échappement et trois bras ou ponts élastiques 6 dont les parties centrales 6a définissent des portions cylindriques 7 qui au repos sont disposées sur un cylindre de diamètre D7.FIG. 2 illustrates, by way of example in plan, a silicon escapement wheel comprising a serge 5 provided with an escape toothing and three resilient arms or bridges 6 whose central portions 6a define cylindrical portions 7 which at rest are arranged on a cylinder of diameter D7.

Le diamètre D7 du passage cylindrique défini par les portions cylindriques 7 des bras 6 de la roue d'échappement 1 est légèrement inférieur au diamètre D4 de la portée 4 de l'axe 2 de manière à ce que la roue soit chassée sur l'axe par déformation élastique de ses bras.The diameter D7 of the cylindrical passage defined by the cylindrical portions 7 of the arms 6 of the escape wheel 1 is slightly smaller than the diameter D4 of the bearing surface 4 of the axis 2 so that the wheel is driven on the axis by elastic deformation of his arms.

Les tolérances sur le diamètre D4 de la portée 4 de l'axe 2 et sur le passage formé par les portions cylindriques 7 des bras de la roue 1 sont déterminées pour que les efforts provoqués lors de la mise en place de la roue sur l'axe restent en dessous de la limite élastique du silicium.The tolerances on the diameter D4 of the bearing surface 4 of the axis 2 and on the passage formed by the cylindrical portions 7 of the arms of the wheel 1 are determined so that the forces caused during the installation of the wheel on the axis remain below the elastic limit of silicon.

L'extrémité de l'axe 2 comportant la portée 4 présente encore une portion intermédiaire 8 de diamètre plus faible que le diamètre D4 de cette portée 4 et se termine par un pivot 9 pour le pivotement de cette extrémité de l'axe 2 dans un palier. La portion intermédiaire B de l'axe 2 est raccordée à la portée 4 de cet axe 2 par un chanfrein tronconique 10.The end of the axis 2 comprising the bearing surface 4 still has an intermediate portion 8 of smaller diameter than the diameter D4 of this bearing surface 4 and ends with a pivot 9 for the pivoting of this end of the axis 2 in a bearing. The intermediate portion B of the axis 2 is connected to the bearing surface 4 of this axis 2 by a frustoconical chamfer 10.

Pour assembler la roue d'échappement 1 à l'axe 2, on introduit l'extrémité 9 de cet axe 2 dans le passage cylindrique défini par les portions cylindriques 7 des bras 6 de la roue d'échappement pour forcer l'axe dans ce passage provoquant l'écartement élastique des bras 6 de la roue d'échappement 1 et le positionnement des portions cylindriques 7 desdits bras contre la portée 4 de l'axe 2.To assemble the escape wheel 1 to the axis 2, the end 9 of this axis 2 is introduced into the cylindrical passage defined by the cylindrical portions 7 of the arms 6 of the escape wheel in order to force the axis in this direction. passage causing the elastic spacing of the arms 6 of the escape wheel 1 and the positioning of the cylindrical portions 7 of said arms against the bearing surface 4 of the axis 2.

Cette fixation par pression élastique des portions cylindriques 7 des bras élastiques 6 de la roue 1 contre la portée 4 de l'axe 2 suffit généralement à assurer un assemblage pouvant supporter le couple de fonctionnement de l'échappement. Toutefois lors du montage de cet ensemble puis lors de l'utilisation d'un mécanisme comportant cet ensemble les chocs et manipulations peuvent provoquer des déplacements axiaux et/ou radiaux entre l'axe 2 et la roue 4, ce qui doit impérativement être évité.This fixation by elastic pressure of the cylindrical portions 7 of the elastic arms 6 of the wheel 1 against the bearing 4 of the axis 2 is generally sufficient to ensure an assembly that can withstand the operating torque of the exhaust. However, during assembly of this assembly and when using a mechanism comprising this assembly shocks and manipulations may cause axial and / or radial displacements between the axis 2 and the wheel 4, which must be avoided.

Pour éviter de tels déplacements intempestifs entre la roue 1 et l'axe 2 le dispositif de fixation comporte une rondelle 11 telle qu'illustrée aux figures 4 et 5. Cette rondelle 11 est réalisée par exemple en Maillechort, laiton ou acier, et comporte un alésage central 12 d'un diamètre D12 plus petit que le diamètre D8 de la portion intermédiaire 8 de l'axe 2 dans le cas où la rondelle est chassée.To avoid such inadvertent movements between the wheel 1 and the axis 2 the fastening device comprises a washer 11 as illustrated in FIGS. 4 and 5. This washer 11 is made for example of nickel silver, brass or steel, and comprises a central bore 12 with a diameter D12 smaller than the diameter D8 of the intermediate portion 8 of the axis 2 in the case where the washer is driven.

Cette rondelle 11 est chassée, collée, sertie, soudée ou fixée de toute autre façon, sur la portion intermédiaire 8 de l'axe 2 et maintient la roue 1 en position axiale appliquée contre la face du pignon 3. La fixation de cette rondelle 11 sur l'axe 2 est suffisamment résistante pour éviter tout déplacement relatif axial, radial ou angulaire de la roue 1 par rapport à l'axe 2 même sous l'effet de chocs violents ou de manipulations au montage de l'ensemble dans un mécanisme.This washer 11 is driven, glued, crimped, welded or fixed in any other way, on the intermediate portion 8 of the axis 2 and keeps the wheel 1 in axial position against the face of the pinion 3. The fixing of this washer 11 sure the axis 2 is sufficiently strong to avoid axial, radial or angular relative displacement of the wheel 1 with respect to the axis 2 even under the effect of violent shocks or manipulations assembly of the assembly in a mechanism.

La valeur des diamètres D8 et D2 ainsi que leurs tolérances sont conformes à ce qui se fait habituellement pour assembler une rondelle sur un axe et on obtient une fixation très robuste.The values of diameters D8 and D2 and their tolerances are consistent with what is usually done to assemble a washer on an axis and we obtain a very robust attachment.

Cette rondelle 11 peut comporter encore des ergots 13 venant par exemple se loger contre la face externe 14 des parties centrales 6a des bras élastiques 6 de la roue 1, ce qui empêche toute rotation relative entre la roue 1 et son axe 2 de même que tout déplacement transversal de la roue 1 par rapport à cet axe 2.This washer 11 may also comprise lugs 13 coming for example to lodge against the outer face 14 of the central portions 6a of the elastic arms 6 of the wheel 1, which prevents any relative rotation between the wheel 1 and its axis 2 as well as any transverse displacement of the wheel 1 with respect to this axis 2.

On peut envisager d'autres façons d'empêcher toute rotation de la roue 1 sur l'axe 2, en particulier le passage de la roue pourrait présenter une section non circulaire coopérant avec une portion de l'axe ou du pignon qui présenterait une section de forme correspondante. Ainsi, la roue 1 peut être fixée en rotation sur l'axe 2 soit directement par des formes appropriées de ces éléments coopérant ensemble, soit par l'intermédiaire de formations que comporte la rondelle 11 coopérant avec des formations correspondantes de la roue 1.It is possible to envisage other ways of preventing any rotation of the wheel 1 on the axis 2, in particular the passage of the wheel could have a non-circular section cooperating with a portion of the axis or pinion which would have a section of corresponding form. Thus, the wheel 1 can be fixed in rotation on the axis 2 either directly by appropriate forms of these elements cooperating together, or by means of formations that comprises the washer 11 cooperating with corresponding formations of the wheel 1.

Le dispositif de fixation a été décrit en référence à une roue en silicium munie de trois bras élastiques. Il va de soi que la roue pourrait ne comporter que deux bras élastiques pour autant que le passage central soit défini par trois points de contact avec ces bras. On peut également envisager une roue à plus de trois bras élastiques. Il est également évident que ce même dispositif pourrait être utilisé pour la fixation d'une roue à bras radiaux rigides dont le moyeu serait muni d'un trou permettant le centrage sur la portion intermédiaire 8 de l'axe 2 par une mise en place à frottement gras de la roue sur cette portion de l'axe.The fixing device has been described with reference to a silicon wheel provided with three elastic arms. It goes without saying that the wheel could have only two elastic arms provided that the central passage is defined by three points of contact with these arms. One can also consider a wheel with more than three elastic arms. It is also obvious that this same device could be used for the attachment of a rigid radial arm wheel whose hub would be provided with a hole for centering on the intermediate portion 8 of the axis 2 by an introduction to friction of the wheel on this portion of the axis.

Les bras élastiques de la roue peuvent dans des variantes être remplacés par une partie élastique de la roue assurant le centrage sur l'axe.The elastic arms of the wheel can in variants be replaced by an elastic portion of the wheel ensuring the centering on the axis.

Dans des variantes la rondelle 11 peut comporter un ou plusieurs ergots 12 et ceux-ci coopèrent non pas avec des rayons ou bras de la roue 1, mais avec des formations correspondantes que comporterait cette roue. De cette façon tout déplacement transversal ou angulaire de la roue par rapport à l'axe est interdit.In variants the washer 11 may comprise one or more lugs 12 and these do not cooperate with spokes or arms of the wheel 1, but with corresponding trainings that would include this wheel. In this way any transverse or angular displacement of the wheel relative to the axis is prohibited.

Le dispositif d'assemblage décrit peut être utilisé pour fixer n'importe quelle pièce 1 en silicium sur un axe qui pourrait ne pas comporter de pignon 3. Dans ce cas l'axe 2 comporte une butée axiale, équivalent à la face du pignon illustré, contre laquelle vient se positionner axialement la roue 1.The assembly device described can be used to fix any piece 1 of silicon on an axis that may not include pinion 3. In this case the axis 2 comprises an axial stop, equivalent to the face of the pinion illustrated. against which is axially positioned the wheel 1.

La seconde forme d'exécution illustrée aux figures 7 à 10 concerne la fixation d'un ressort spiral 20 en silicium comportant une virole 21 venue d'une pièce de fabrication avec le spiral 20. Cette virole 21 comporte un passage 22 et une fente radiale 23.The second embodiment illustrated in FIGS. 7 to 10 relates to the attachment of a spiral spring 20 made of silicon comprising a ferrule 21 coming from a work piece with the spiral 20. This ferrule 21 comprises a passage 22 and a radial slot 23.

Ce spiral en silicium 20 doit être fixé à l'aide du présent dispositif sur un axe 24 sur une partie duquel est chassé un balancier 25. Cet axe 24 comporte une partie terminale 26 de plus petite diamètre qu'un épaulement 27 formant une butée axiale.This silicon spiral 20 must be fixed with the aid of the present device on an axis 24 on which part is driven a rocker 25. This axis 24 has a terminal portion 26 of smaller diameter than a shoulder 27 forming an axial abutment .

Le diamètre de la partie terminale 26 de l'axe 24 correspond à celui du passage 22 de la virole 21 pour permettre un ajustement sans jeu.The diameter of the end portion 26 of the axis 24 corresponds to that of the passage 22 of the ferrule 21 to allow adjustment without play.

Le spiral est mis en place par introduction de la partie terminale 26 de l'axe dans le trou 22 de la virole 21 qui vient buter contre l'épaulement 27 de l'axe 24.The hairspring is put in place by introducing the end portion 26 of the pin into the hole 22 of the collar 21 which abuts against the shoulder 27 of the pin 24.

Le dispositif de fixation comporte encore une rondelle 28 comportant un trou 29 d'un diamètre inférieur à celui de la partie terminale 26 de l'axe 24 de manière à pouvoir être chassée sur cette partie terminale 26.The fixing device also comprises a washer 28 having a hole 29 of a diameter smaller than that of the end portion 26 of the shaft 24 so that it can be driven onto this end portion 26.

Cette rondelle 28 comporte encore une saillie radiale 30 émergeant d'une de ses faces et destinée à coopérer avec la fente 23 de la virole.This washer 28 also has a radial projection 30 emerging from one of its faces and intended to cooperate with the slot 23 of the ferrule.

Ainsi, en position assemblée, la rondelle 2 applique la virole 21 contre la butée 27 et la saillie 30 coopérant avec la fente 23 empêche tout déplacement angulaire de la virole par rapport à l'axe 24.Thus, in the assembled position, the washer 2 applies the shell 21 against the stop 27 and the projection 30 cooperating with the slot 23 prevents any angular displacement of the ferrule with respect to the axis 24.

Ainsi, le spiral en silicium peut être fixé à l'axe 24 tant axialement qu'angulairement à l'aide la rondelle 28.Thus, the silicon balance spring can be fixed to the axis 24 both axially and angularly using the washer 28.

Dans des variantes la rondelle 28 peut être sertie, collée, soudée ou fixée de toute autre façon à l'axe 24.In variants the washer 28 can be crimped, glued, welded or otherwise fixed to the axis 24.

Dans tous les cas, ce dispositif de fixation permet de fixer une pièce en silicium sur un axe sans imposer de contraintes importantes à la pièce en silicium qui pourraient l'endommager tout en assurant sa position axiale et angulaire par rapport à l'axe.In any case, this fixing device makes it possible to fix a silicon part on an axis without imposing significant stresses on the silicon part which could damage it while ensuring its axial and angular position with respect to the axis.

L'originalité du présent dispositif de fixation d'une pièce en silicium sur un axe réside donc dans le fait que le montage et la mise en place de la pièce sur l'axe se fait avec peu ou pas de serrage pour éviter toute détérioration de la pièce en silicium tout en assurant un positionnement axial et angulaire corrects.The originality of the present device for fixing a silicon part on an axis therefore lies in the fact that the mounting and the positioning of the part on the axis is done with little or no tightening to avoid any deterioration of the silicon part while ensuring correct axial and angular positioning.

Le principe revient à réaliser un ajustement libre ou gras entre l'axe et la pièce et de sécuriser la fixation de cet ensemble à l'aide d'une rondelle fixée sur l'axe et servant de butée axiale, radiale et angulaire déterminant les positions relatives de l'axe par rapport à la pièce. En variante, la fixation radiale et angulaire de la pièce 1 sur l'axe 2 se fait par la coopération d'une partie de l'axe 2 avec le passage de la pièce 1, ce passage et cette partie de l'axe 2 présentant des sections circulaires correspondantes.The principle amounts to making a free or greasy adjustment between the axis and the part and to secure the fixing of this assembly with the aid of a washer fixed on the axis and acting as axial, radial and angular stop determining the positions relative to the workpiece. As a variant, the radial and angular attachment of the part 1 on the axis 2 is done by the cooperation of a part of the axis 2 with the passage of the part 1, this passage and this part of the axis 2 presenting corresponding circular sections.

Claims (10)

Dispositif de fixation d'une pièce (1;21) notamment d'une planche, roue, pignon ou virole en silicium sur un axe, caractérisé par le fait que l'axe (2;24) présente une butée axiale (3;27), une portée (4;26) jouxtant cette butée; par le fait que la pièce (1;21) comporte un passage coopérant avec la portée (4;26); par le fait qu'il comporte encore une rondelle (11;28) présentant un trou (12;29), cette rondelle (11;28) étant fixée sur l'axe (2;24) de manière à ce que la pièce (1) soit située entre la butée (3 ;27) et la rondelle (11 ;28).Device for fixing a workpiece (1; 21) in particular of a board, wheel, pinion or ferrule made of silicon on an axis, characterized in that the axis (2; 24) has an axial abutment (3; ), a bearing (4; 26) adjoining this stop; in that the piece (1; 21) has a passage cooperating with the bearing surface (4; 26); in that it further comprises a washer (11; 28) having a hole (12; 29), the washer (11; 28) being fixed on the axis (2; 24) so that the part (11; 1) is located between the stop (3; 27) and the washer (11; 28). Dispositif selon la revendication 1, caractérisé par le fait que la rondelle (11;28) est fixée sur l'axe (2) par collage, soudage, sertissage ou chassage.Device according to claim 1, characterized in that the washer (11; 28) is fixed on the shaft (2) by gluing, welding, crimping or driving. Dispositif selon l'une des revendications 1 ou 2, caractérisé par le fait que la rondelle (11;28) comporte encore au moins un ergot (12;30) coopérant avec une formation correspondante (13;23) de la pièce (1;20,21) pour empêcher toute rotation ou translation de cette pièce par rapport à l'axe (2;24).Device according to one of claims 1 or 2, characterized in that the washer (11; 28) further comprises at least one lug (12; 30) cooperating with a corresponding formation (13; 23) of the piece (1; 20,21) to prevent any rotation or translation of this part relative to the axis (2; 24). Dispositif selon la revendication 1, caractérisé par le fait que la section du passage de la pièce (1;21) est non circulaire et coopère avec une portion de l'axe (2;24) présentant une section de forme correspondante pour empêcher toute rotation ou translation de cette pièce (1;21) par rapport à l'axe (2;24).Device according to claim 1, characterized in that the section of the passage of the workpiece (1; 21) is non-circular and cooperates with a portion of the shaft (2; 24) having a section of corresponding shape to prevent rotation or translation of this part (1; 21) with respect to the axis (2; 24). Dispositif selon la revendication 1, caractérisé par le fait que l'axe (2) est l'axe d'un pignon d'échappement et que la pièce (1) est une roue d'échappement.Device according to claim 1, characterized in that the axis (2) is the axis of an exhaust pinion and the part (1) is an escape wheel. Dispositif selon la revendication 4, caractérisé par le fait que la pièce (1) comporte une partie élastique (6) comportant des surfaces (7) permettant le passage d'un axe par déformation de cette partie élastique (6).Device according to claim 4, characterized in that the part (1) comprises an elastic portion (6) having surfaces (7) allowing the passage of an axis by deformation of this elastic portion (6). Dispositif selon l'une des revendications précédentes, caractérisé par le fait que l'axe (2) comporte deux portions (4,8), la première (4) jouxtant la butée axiale (3) étant d'un diamètre plus grand que la seconde (8), le diamètre de la première portion (4) correspondant au passage de la pièce en silicium (1) et le diamètre de la seconde (8) correspondant au trou (12) de la rondelle (11).Device according to one of the preceding claims, characterized in that the axis (2) comprises two portions (4,8), the first (4) abutting the axial stop (3) being of a larger diameter than the second (8), the diameter of the first portion (4) corresponding to the passage of the silicon part (1) and the diameter of the second (8) corresponding to the hole (12) of the washer (11). Dispositif selon l'une des revendications 1 à 5, caractérisé par le fait que l'axe (24) comporte une portée (26) dont le diamètre correspond au passage (22) de la pièce (20,21) en silicium et au trou (29) de la rondelle (28).Device according to one of claims 1 to 5, characterized in that the axis (24) comprises a bearing surface (26) whose diameter corresponds to the passage (22) of the piece (20,21) made of silicon and to the hole (29) of the washer (28). Dispositif selon l'une des revendications précédentes, caractérisé par le fait que la pièce (20,21) est un ressort spiral en silicium présentant une virole intégrée, soit d'une seule pièce de fabrication avec le spiral.Device according to one of the preceding claims, characterized in that the piece (20,21) is a spiral spring made of silicon having an integrated ferrule, or of a single workpiece with the spiral. Dispositif selon l'une des revendications précédentes, caractérisé par le fait que la pièce (1) est appliquée contre la butée (3 ;27) de l'axe (2 ;24) par la rondelle (11 ;28).Device according to one of the preceding claims, characterized in that the piece (1) is applied against the stop (3; 27) of the shaft (2; 24) by the washer (11; 28).
EP05006186A 2005-03-22 2005-03-22 Assembly of a mechanical part onto an axle Not-in-force EP1705533B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT05006186T ATE463766T1 (en) 2005-03-22 2005-03-22 ASSEMBLY OF A PART WITH ONE AXLE
DE602005020416T DE602005020416D1 (en) 2005-03-22 2005-03-22 Assembly of a part with an axle
EP05006186A EP1705533B1 (en) 2005-03-22 2005-03-22 Assembly of a mechanical part onto an axle
EP06003784A EP1708045A3 (en) 2005-03-22 2006-02-24 Attachment of a clock wheel to an axis
HK07102833.0A HK1095643A1 (en) 2005-03-22 2007-03-15 Assembly of a mechanical part onto an axle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05006186A EP1705533B1 (en) 2005-03-22 2005-03-22 Assembly of a mechanical part onto an axle

Publications (2)

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EP1705533A1 true EP1705533A1 (en) 2006-09-27
EP1705533B1 EP1705533B1 (en) 2010-04-07

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Family Applications (1)

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EP05006186A Not-in-force EP1705533B1 (en) 2005-03-22 2005-03-22 Assembly of a mechanical part onto an axle

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EP (1) EP1705533B1 (en)
AT (1) ATE463766T1 (en)
DE (1) DE602005020416D1 (en)
HK (1) HK1095643A1 (en)

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EP2107433A1 (en) 2008-04-02 2009-10-07 Manufacture et fabrique de montres et chronomètres Ulysse Nardin Le Locle SA Method for assembling a part on an axle
EP2154582A1 (en) * 2008-08-15 2010-02-17 Nivarox-FAR S.A. Gear method for a clock piece
EP2219083A1 (en) 2009-02-13 2010-08-18 Patek Philippe SA Genève Timepiece component
CH701155B1 (en) * 2006-12-27 2010-12-15 Complitime Sa Balance spiral type mechanical oscillator for e.g. wrist watch, has balance and spiral, which are made of non-magnetic material such as diamond, where material possesses very low thermal expansion coefficient
EP2273322A1 (en) 2009-07-10 2011-01-12 Chopard Technologies SA Method for mounting a part on a pivoting element
EP2765462A1 (en) * 2013-02-12 2014-08-13 ETA SA Manufacture Horlogère Suisse Anti-impact centre wheel
EP2860592A1 (en) * 2013-10-09 2015-04-15 Nivarox-FAR S.A. Assembly system using a planar resilient locking member
EP2860591A1 (en) * 2013-10-09 2015-04-15 Nivarox-FAR S.A. Assembly system using a conical resilient locking member
JP2016061776A (en) * 2014-09-12 2016-04-25 セイコーインスツル株式会社 Timepiece gear, pallet, balance, timepiece movement, and mechanical timepiece
EP3051364A1 (en) * 2015-01-29 2016-08-03 Cartier International AG System for mechanical transmission by adherence
EP3106932A1 (en) * 2015-06-16 2016-12-21 Nivarox-FAR S.A. Manufacturing method comprising a modified mounting step
EP3141520A1 (en) * 2015-09-08 2017-03-15 Nivarox-FAR S.A. Method for manufacturing a micromechanical timepiece part and said micromechanical timepiece part
EP3141522A1 (en) * 2015-09-08 2017-03-15 Nivarox-FAR S.A. Micromechanical timepiece part comprising a lubricated surface and method for manufacturing such a micromechanical timepiece part
JP2017102108A (en) * 2015-12-02 2017-06-08 ニヴァロックス−ファー ソシエテ アノニム Protection of timepiece component formed of material capable of being subjected to fine machine work
RU2655874C2 (en) * 2013-01-17 2018-05-29 Омега Са Part for clock mechanism
JP2018155523A (en) * 2017-03-16 2018-10-04 セイコーインスツル株式会社 Watch component, movement, and watch
JP2019052931A (en) * 2017-09-14 2019-04-04 セイコーエプソン株式会社 Timepiece component, timepiece movement, and timepiece
JP2020060373A (en) * 2018-10-05 2020-04-16 シチズン時計株式会社 Rotary shaft and fixing mechanism of rotary member
EP3644128A1 (en) 2018-10-24 2020-04-29 Seiko Epson Corporation Timepiece part and timepiece
US10761483B2 (en) 2017-05-16 2020-09-01 Seiko Epson Corporation Mechanical part, timepiece, and method of manufacturing a mechanical part
JP2021001874A (en) * 2019-06-21 2021-01-07 ザ・スウォッチ・グループ・リサーチ・アンド・ディベロップメント・リミテッド Watch equipped with horn
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US9310770B2 (en) 2008-08-15 2016-04-12 Nivarox-Far S.A. Gear system for a timepiece
EP2154582A1 (en) * 2008-08-15 2010-02-17 Nivarox-FAR S.A. Gear method for a clock piece
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ATE463766T1 (en) 2010-04-15
DE602005020416D1 (en) 2010-05-20
EP1705533B1 (en) 2010-04-07
HK1095643A1 (en) 2007-05-11

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