CH700624A2 - Horological component i.e. disk-shaped mobile unit, for use in timepiece, has clamping system including clamping device with deflection device to provide degrees of freedom to crown relative to supporting element - Google Patents

Horological component i.e. disk-shaped mobile unit, for use in timepiece, has clamping system including clamping device with deflection device to provide degrees of freedom to crown relative to supporting element Download PDF

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Publication number
CH700624A2
CH700624A2 CH00393/09A CH3932009A CH700624A2 CH 700624 A2 CH700624 A2 CH 700624A2 CH 00393/09 A CH00393/09 A CH 00393/09A CH 3932009 A CH3932009 A CH 3932009A CH 700624 A2 CH700624 A2 CH 700624A2
Authority
CH
Switzerland
Prior art keywords
component
ring
clamping system
opening
freedom
Prior art date
Application number
CH00393/09A
Other languages
French (fr)
Other versions
CH700624B1 (en
Inventor
Marco Verardo
Thierry Conus
Jean-Philippe Thiebaud
Peters Jean-Bernard
Pierre Cusin
Original Assignee
Nivarox Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nivarox Sa filed Critical Nivarox Sa
Priority to CH00393/09A priority Critical patent/CH700624B1/en
Publication of CH700624A2 publication Critical patent/CH700624A2/en
Publication of CH700624B1 publication Critical patent/CH700624B1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0852Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft
    • F16D1/0858Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft due to the elasticity of the hub (including shrink fits)
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0852Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft
    • F16D1/087Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft due to other loading elements in the hub or shaft
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00Gearwork
    • G04B13/02Wheels; Pinions; Spindles; Pivots
    • G04B13/021Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft
    • G04B13/022Wheels; 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

Abstract

The component (1) has an opening for receiving a supporting element (3) e.g. pivoting axle, and including a clamping system to exert radial stress allowing the component to be secured to the supporting element. The clamping system comprises a radial clamping device with a crown (6) for exerting the radial stress and a shady recess (8) concentrically spaced from the opening to allow deflection of the crown. The clamping device comprises a deflection device to provide degrees of freedom to the crown relative to the supporting element.

Description

       

  Domaine de l'invention

  

[0001]    L'invention se rapporte à un système de serrage radial pour un composant horloger et plus, particulièrement, un tel système pour solidariser ledit composant à un élément de support comme, par exemple, un axe pivotant.

Arrière plan de l'invention

  

[0002]    Il est connu de solidariser des mobiles horlogers en chassant leur trou central traversant sur un axe pivotant entre un pont et la platine. Cette configuration est très répandue avec des matériaux métalliques, cependant, elle n'est pas applicable pour des matériaux cassants dont la zone de déformation plastique est sensiblement inexistante.

Résumé de l'invention

  

[0003]    Le but de la présente invention est de pallier tout ou partie les inconvénients cités précédemment en proposant un composant horloger dont le système de serrage radial utilise uniquement la zone de déformation élastique du matériau pour se solidariser avec son élément de support.

  

[0004]    A cet effet, l'invention se rapporte à un composant horloger comportant une ouverture destinée à recevoir un élément de support et comprenant un système de serrage destinée à exercer une contrainte radiale permettant audit composant horloger d'être solidaire dudit élément de support caractérisé en ce que le système de serrage comporte un dispositif de pincement radial comportant une couronne destinée à exercer ladite contrainte radiale et un évidement borgne concentrique espacé de ladite ouverture destiné à autoriser le débattement de ladite couronne et en ce que le système de serrage comporte en outre un dispositif de débattement permettant d'offrir plus de degrés de liberté à ladite couronne par rapport audit élément de support.

  

[0005]    Conformément à d'autres caractéristiques avantageuses de l'invention:
- ladite couronne est crénelée permettant de former plusieurs lames indépendantes autour de ladite ouverture;
- la section intérieure de la couronne est tronconique afin d'augmenter localement ladite contrainte radiale;
- ladite section est plus faible au niveau de l'extrémité libre de la couronne afin d'exercer une contrainte radiale maximale au niveau de l'extrémité libre de chaque lame contre ledit élément de support;
- le dispositif de débattement comporte un deuxième évidement borgne concentrique espacé dudit premier évidement borgne et situé sur la face opposée audit premier évidement;
- les deux évidements comportent des largeurs identiques et/ou des profondeurs identiques et/ou leur fond sont situés sensiblement dans le même plan;

  
- le composant horloger est de forme généralement discoïdale et comporte une denture circonférentielle afin de former un mobile.

  

[0006]    L'invention se rapporte également à une pièce d'horlogerie caractérisée en ce qu'elle comporte au moins un composant horloger selon l'une des variantes précédentes.

Description sommaire des dessins

  

[0007]    D'autres particularités et avantages ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels:
<tb>la fig. 1<sep>est une représentation en perspective d'un composant horloger monté sur un élément de support selon l'invention;


  <tb>la fig. 2<sep>est une section d'un composant horloger selon l'invention;


  <tb>la fig. 3<sep>est une représentation agrandie d'une partie de la fig. 2;


  <tb>la fig. 4<sep>est une représentation vue de dessus d'un composant horloger selon l'invention.

Description détaillée des modes de réalisation préférés

  

[0008]    Comme illustré aux fig. 1à 4, l'invention se rapporte à un composant horloger généralement annoté 1 destiné à coopérer avec un élément de support 3. Dans l'exemple utilisé ci-dessous, le composant horloger 1 est un mobile sensiblement discoïdal et l'élément de support 3, un axe cylindrique à section circulaire, cependant, ils ne sauraient s'y limiter.

  

[0009]    Dans l'exemple visible à la fig. 1, on peut voir un composant horloger 1 monté sur un élément de support 3. Préférentiellement, l'élément de support 3 comporte un axe 2 venu de matière avec un pignon 4. Le composant horloger 1 comporte un moyeu 5 comportant une ouverture 7, quatre bras 9 et une serge dentée 11. Avantageusement selon l'invention, le composant horloger 1 est monté sur l'élément de support 3 au moyen d'un système de serrage 13 situé autour de l'ouverture 7 traversant ledit composant.

  

[0010]    Le système de serrage 13 est destiné à exercer une contrainte radiale sur l'axe 2 afin de solidariser le composant horloger 1 avec l'élément de support 3. Le système de serrage 13 est une alternative au chassage qui n'est pas toujours possible pour des matériaux comme le silicium cristallisé, le carbure de silicium, la silice cristallisée ou encore l'alumine cristallisée.

  

[0011]    Le système de serrage 13 comporte préférentiellement un dispositif de pincement radial 15 et un dispositif de débattement 17. Le dispositif de pincement 15 comporte principalement une couronne 6 et un évidement 8. La couronne 6 est destinée à pincer la surface externe de l'axe 2. Elle est préférentiellement crénelée et comporte plusieurs lames 12 dont la section intérieure 14 forme le bord de l'ouverture 7 afin de mieux gérer localement le débattement de la couronne 6. Ainsi, avantageusement selon l'invention, chaque lame 12 est indépendante et se déplace élastiquement suivant la contrainte propre qui lui est soumise.

  

[0012]    Comme visible à la fig. 3, la section intérieure 14 est tronconique selon un angle a afin d'augmenter localement la contrainte de pincement. Dans l'exemple illustré aux fig. 1à 4, la section supérieure de l'ouverture 7 est ainsi plus petite que la section inférieure. Selon l'invention, l'angle a peut être compris entre sensiblement 0 et 5 degrés. On comprend donc que la contrainte de pincement de la couronne 6 du dispositif de pincement 15 sera maximale au niveau de son extrémité libre, c'est-à-dire à l'extrémité des lames 12.

  

[0013]    L'évidement 8 est destiné à autoriser un débattement de la couronne 6. Selon l'invention, l'évidement 8 est préférentiellement borgne et communique entre chaque lame 12 avec l'ouverture 7. Chaque lame 12 peut ainsi louvoyer de manière indépendante entre l'évidement 8 et l'ouverture 7.

  

[0014]    Le dispositif de débattement 17 est destiné à offrir plus de degrés de liberté à la couronne 6 par rapport à l'axe 2. Ainsi, il autorise non seulement une plus grande amplitude de déplacement des lames 12 mais il permet également de modifier plus globalement la direction de la section intérieure 14. Le dispositif de débattement 17 comporte ainsi un deuxième évidement 10.

  

[0015]    Préférentiellement, le deuxième évidement 10 est borgne, concentriquement espacé du premier évidement 8 et situé sur la face opposée du composant horloger 1 par rapport au premier évidement 8 comme visible aux fig. 2et 3. Dans ces exemples, la profondeur et la largeur des évidements 8 et 10 sont sensiblement équivalentes. De plus, le fond de chaque évidement 8, 10 sont situés dans le même plan.

  

[0016]    Selon l'invention, en fonction de l'application du composant horloger, les évidements peuvent comporter une profondeur comprise entre 5 et 85 % de l'épaisseur du composant horloger.

  

[0017]    Préférentiellement, le composant horloger 1 est réalisé en matériau micro-usinable afin de pourvoir obtenir une précision inférieure au micron. De tels matériaux peuvent être, par exemple, mais non exclusivement du carbure de silicium, du silicium cristallisé, de l'alumine cristallisé ou de la silice cristallisée. En effet, de tels matériaux peuvent être gravés selon la précision requise notamment au moyen d'un procédé du type gravage ionique réactif profond (DRIE).

  

[0018]    Bien entendu, la présente invention ne se limite pas à l'exemple illustré mais est susceptible de diverses variantes et modifications qui apparaîtront à l'homme de l'art. En particulier, suivant les applications prévues et/ou le matériau utilisé, les profondeurs et largeurs des évidements 8 et 10 peuvent différer tout comme leur espacement respectif par rapport à l'ouverture 7 ou l'appartenance de leur fond à un même plan.



  Field of the invention

  

The invention relates to a radial clamping system for a watch component and more, particularly, such a system for securing said component to a support member such as, for example, a pivot axis.

Background of the invention

  

It is known to secure watchmakers by driving their central hole through a pivoting axis between a bridge and the plate. This configuration is widespread with metallic materials, however, it is not applicable for brittle materials whose plastic deformation zone is substantially non-existent.

Summary of the invention

  

The object of the present invention is to overcome all or part of the disadvantages mentioned above by providing a watch component whose radial clamping system uses only the elastic deformation zone of the material to become integral with its support member.

  

For this purpose, the invention relates to a watch component comprising an opening for receiving a support member and comprising a clamping system intended to exert a radial stress enabling said watch component to be secured to said support member. characterized in that the clamping system comprises a radial clamping device comprising a ring gear for exerting said radial stress and a concentric blind recess spaced from said opening intended to allow the clearance of said ring and in that the clamping system comprises in in addition to a deflection device for providing more degrees of freedom to said ring relative to said support member.

  

According to other advantageous features of the invention:
- said ring is crenellated to form a plurality of independent blades around said opening;
- The inner section of the ring is frustoconical in order to locally increase said radial stress;
said section is weaker at the free end of the crown in order to exert maximum radial stress at the free end of each blade against said support member;
- The deflection device comprises a second concentric blind recess spaced from said first blind recess and located on the opposite side to said first recess;
the two recesses comprise identical widths and / or identical depths and / or their bottom are located substantially in the same plane;

  
- The watch component is of generally discoidal shape and has a circumferential toothing to form a mobile.

  

The invention also relates to a timepiece characterized in that it comprises at least one watch component according to one of the preceding variants.

Brief description of the drawings

  

Other features and advantages will become apparent from the description which is given below, for information only and in no way limitative, with reference to the accompanying drawings, in which:
<tb> fig. 1 <sep> is a perspective representation of a watch component mounted on a support member according to the invention;


  <tb> fig. 2 <sep> is a section of a watch component according to the invention;


  <tb> fig. 3 <sep> is an enlarged representation of a portion of FIG. 2;


  <tb> fig. 4 <sep> is a top view of a watch component according to the invention.

Detailed Description of the Preferred Embodiments

  

As illustrated in FIGS. 1 to 4, the invention relates to a generally annotated watch component 1 intended to cooperate with a support element 3. In the example used below, the watch component 1 is a substantially discoidal mobile and the support element 3 , a cylindrical axis with circular section, however, they can not be limited thereto.

  

In the example shown in FIG. 1, there can be seen a watchmaking component 1 mounted on a support element 3. Preferably, the support element 3 comprises an axis 2 integrally formed with a pinion 4. The watch component 1 comprises a hub 5 having an opening 7, four arms 9 and a toothed serge 11. Advantageously according to the invention, the watch component 1 is mounted on the support member 3 by means of a clamping system 13 located around the opening 7 passing through said component.

  

The clamping system 13 is intended to exert a radial stress on the axis 2 to secure the watch component 1 with the support member 3. The clamping system 13 is an alternative to hunting that is not always possible for materials such as crystallized silicon, silicon carbide, crystallized silica or crystallized alumina.

  

The clamping system 13 preferably comprises a radial clamping device 15 and a deflection device 17. The clamping device 15 mainly comprises a ring 6 and a recess 8. The ring 6 is intended to clamp the outer surface of the 2. It is preferably crenellated and comprises a plurality of blades 12 whose inner section 14 forms the edge of the opening 7 to better locally manage the deflection of the crown 6. Thus, advantageously according to the invention, each blade 12 is independent and moves elastically according to the own constraint that is submitted to it.

  

As shown in FIG. 3, the inner section 14 is frustoconical at an angle α in order to locally increase the pinch stress. In the example illustrated in FIGS. 1 to 4, the upper section of the opening 7 is thus smaller than the lower section. According to the invention, the angle a may be between substantially 0 and 5 degrees. It is therefore understood that the clamping stress of the ring 6 of the clamping device 15 will be maximum at its free end, that is to say at the end of the blades 12.

  

The recess 8 is intended to allow a clearance of the ring 6. According to the invention, the recess 8 is preferably blind and communicates between each blade 12 with the opening 7. Each blade 12 can thus tack independent between the recess 8 and the opening 7.

  

The deflection device 17 is intended to provide more degrees of freedom to the ring 6 relative to the axis 2. Thus, it allows not only a greater amplitude of movement of the blades 12 but it also allows to change more generally the direction of the inner section 14. The deflection device 17 thus comprises a second recess 10.

  

Preferably, the second recess 10 is blind, concentrically spaced from the first recess 8 and located on the opposite face of the watch component 1 relative to the first recess 8 as visible in FIGS. 2 and 3. In these examples, the depth and width of the recesses 8 and 10 are substantially equivalent. In addition, the bottom of each recess 8, 10 are located in the same plane.

  

According to the invention, depending on the application of the watch component, the recesses may have a depth of between 5 and 85% of the thickness of the watch component.

  

Preferably, the watch component 1 is made of micro-machinable material so as to obtain a precision less than one micron. Such materials may be, for example, but not exclusively silicon carbide, crystallized silicon, crystallized alumina or crystalline silica. Indeed, such materials can be etched according to the required accuracy, in particular by means of a process of the deep reactive ion etching (DRIE) type.

  

Of course, the present invention is not limited to the illustrated example but is susceptible to various variations and modifications that will occur to those skilled in the art. In particular, depending on the intended applications and / or the material used, the depths and widths of the recesses 8 and 10 may differ as their spacing relative to the opening 7 or the membership of their bottom to the same plane.


    

Claims (10)

1. Composant horloger (1) comportant une ouverture (7) destinée à recevoir un élément de support (3) et comprenant un système de serrage (13) destinée à exercer une contrainte radiale permettant audit composant horloger d'être solidaire dudit élément de support caractérisé en ce que le système de serrage (13) comporte un dispositif de pincement radial (15) comportant une couronne (6) destinée à exercer ladite contrainte radiale et un évidement (8) borgne concentrique espacé de ladite ouverture destiné à autoriser le débattement de ladite couronne et en ce que le système de serrage (13) comporte en outre un dispositif de débattement (17) permettant d'offrir plus de degrés de liberté à ladite couronne par rapport audit élément de support. Watchmaking component (1) comprising an opening (7) intended to receive a support element (3) and comprising a clamping system (13) intended to exert a radial stress enabling said watch component to be secured to said support element. characterized in that the clamping system (13) comprises a radial clamping device (15) comprising a ring gear (6) for exerting said radial stress and a concentric blind recess (8) spaced from said opening for allowing the deflection of said ring and that the clamping system (13) further comprises a deflection device (17) for providing more degrees of freedom to said ring relative to said support member. 2. Composant horloger (1) selon la revendication 1, caractérisé en ce que ladite couronne (6) est crénelée permettant de former plusieurs lames (12) indépendantes autour de ladite ouverture. 2. Watchmaking component (1) according to claim 1, characterized in that said ring (6) is crenellated to form a plurality of blades (12) independent around said opening. 3. Composant horloger (1) selon la revendication 2, caractérisé en ce que la section intérieure (14) de la couronne (6) est tronconique afin d'augmenter localement ladite contrainte radiale. 3. Horological component (1) according to claim 2, characterized in that the inner section (14) of the ring (6) is frustoconical in order to locally increase said radial stress. 4. Composant horloger (1) selon la revendication 3, caractérisé en ce que ladite section (14) est plus faible au niveau de l'extrémité libre de la couronne (6) afin d'exercer une contrainte radiale maximale au niveau de l'extrémité libre de chaque lame (12) contre ledit élément de support. 4. Watchmaking component (1) according to claim 3, characterized in that said section (14) is lower at the free end of the ring (6) in order to exert a maximum radial stress at the level of the free end of each blade (12) against said support member. 5. Composant horloger (1) selon l'une des revendications précédentes, caractérisé en ce que le dispositif de débattement (17) comporte un deuxième évidement (10) borgne concentrique espacé dudit premier évidement borgne et situé sur la face opposée audit premier évidement. 5. Watchmaking component (1) according to one of the preceding claims, characterized in that the deflection device (17) comprises a second concentric blind recess (10) spaced from said first blind recess and located on the face opposite to said first recess. 6. Composant horloger (1) selon la revendication 5, caractérisé en ce que les deux évidements (8, 10) comportent des largeurs identiques. 6. Watchmaking component (1) according to claim 5, characterized in that the two recesses (8, 10) have identical widths. 7. Composant horloger (1) selon la revendication 5 ou 6, caractérisé en ce que les deux évidements (8, 10) comportent des profondeurs identiques. 7. Horological component (1) according to claim 5 or 6, characterized in that the two recesses (8, 10) have identical depths. 8. Composant horloger (1) selon l'une des revendications 5 à 7, caractérisé en ce que les fonds des deux évidements (8, 10) sont situés sensiblement dans le même plan. 8. Horological component (1) according to one of claims 5 to 7, characterized in that the funds of the two recesses (8, 10) are located substantially in the same plane. 9. Composant horloger (1) selon l'une des revendications précédentes, caractérisé en ce qu'il est de forme généralement discoïdale et comporte une denture circonférentielle afin de former un mobile. 9. Horological component (1) according to one of the preceding claims, characterized in that it is of generally discoidal shape and has a circumferential toothing to form a mobile. 10. Pièce d'horlogerie caractérisée en ce qu'elle comporte au moins un composant horloger (1) selon l'une des revendications précédentes. 10. Timepiece characterized in that it comprises at least one watch component (1) according to one of the preceding claims.
CH00393/09A 2009-03-17 2009-03-17 Radial clamping system for a watch component. CH700624B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH00393/09A CH700624B1 (en) 2009-03-17 2009-03-17 Radial clamping system for a watch component.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00393/09A CH700624B1 (en) 2009-03-17 2009-03-17 Radial clamping system for a watch component.

Publications (2)

Publication Number Publication Date
CH700624A2 true CH700624A2 (en) 2010-09-30
CH700624B1 CH700624B1 (en) 2019-07-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CH00393/09A CH700624B1 (en) 2009-03-17 2009-03-17 Radial clamping system for a watch component.

Country Status (1)

Country Link
CH (1) CH700624B1 (en)

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