CH700625A2 - Discoidal shaped horlogical component i.e. mobile, for timepiece, has recess separated from opening to authorize displacement of crown, and clamping system exerting radial constraints to permit component to be integrated to element - Google Patents

Discoidal shaped horlogical component i.e. mobile, for timepiece, has recess separated from opening to authorize displacement of crown, and clamping system exerting radial constraints to permit component to be integrated to element Download PDF

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Publication number
CH700625A2
CH700625A2 CH00394/09A CH3942009A CH700625A2 CH 700625 A2 CH700625 A2 CH 700625A2 CH 00394/09 A CH00394/09 A CH 00394/09A CH 3942009 A CH3942009 A CH 3942009A CH 700625 A2 CH700625 A2 CH 700625A2
Authority
CH
Switzerland
Prior art keywords
component
opening
clamping system
crown
ring
Prior art date
Application number
CH00394/09A
Other languages
French (fr)
Inventor
Marco Verardo
Thierry Conus
Jean-Philippe Thiebaud
Jean-Bernard Peters
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 CH00394/09A priority Critical patent/CH700625A2/en
Publication of CH700625A2 publication Critical patent/CH700625A2/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
    • F16D1/087Couplings 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
    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Adornments (AREA)

Abstract

The component (1) has an opening for receiving a support element (3) i.e. circular cylindrical arbor. The opening has a clamping system (13) that exerts radial constraints to permit the component to be integrated to the support element. The clamping system has a radial pinching device (15) provided with a toothed crown (6) that exerts the radial constraints. The pinching device has a concentric blind recess (8) that is separated from the opening to authorize the displacement of the toothed crown.

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.

  

[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 système de serrage comporte en outre un dispositif de verrouillage permettant de maintenir une contrainte minimale dudit système de serrage contre ledit élément de support;

  
- le dispositif de verrouillage comporte une clé de verrouillage comportant une collerette destinée à coopérer avec ledit évidement borgne afin de limiter le débattement de l'extrémité libre de la couronne;
- la section intérieure de la collerette est tronconique afin de rendre progressif ledit verrouillage;
- 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 carbure de silicium, la silicium cristallisé, 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 verrouillage 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. Préférentiellement selon l'invention, l'évidement 8 est également destiné à coopérer avec le dispositif de verrouillage 17.

  

[0014]    Selon l'invention, en fonction de l'application du composant horloger, l'évidement 8 peut comporter une profondeur comprise entre 5 et 85 % de l'épaisseur du composant horloger.

  

[0015]    Le dispositif de verrouillage 17 est destiné à maintenir une contrainte minimale du système de serrage 13 contre l'axe 2 en bornant le louvoiement des lames 12 lorsque le positionnement global est jugé satisfaisant. Ainsi, le dispositif de verrouillage 17 comporte une clé de verrouillage 10 sensiblement discoïdale comprenant un trou 16 et sur la face inférieure une collerette 18.

  

[0016]    Préférentiellement, le trou 16 est traversant et de section intérieure de plus grande taille que le diamètre extérieur de l'axe 2 afin de pouvoir y coulisser sans frottement gras. La collerette 18 de forme générale annulaire comporte une section intérieure 19 sensiblement tronconique afin de rendre progressif le verrouillage du positionnement des lames 12.

  

[0017]    Par conséquent, à l'aide de la fig. 3, on comprend que la clé de verrouillage 10 est coulissée contre l'axe 2 au travers de son trou 16 pour que sa collerette 18 soit reçue dans l'évidement 8. La collerette 18, une fois insérée, empêche ainsi le déplacement des lames 12 vers l'évidement 8 par butée de sa section intérieure 19 en verrouillant leur positionnement.

  

[0018]    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). De plus, de manière préférée, la clé de verrouillage 10 est formé d'un matériau ductile comme, par exemple, un métal.

  

[0019]    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 dimensions de l'évidement 8 et de la collerette 18 peuvent différer tout comme leur espacement respectif par rapport à l'ouverture 7.



  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 for allowing the clearance of said ring.

  

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 clamping system further comprises a locking device for maintaining a minimum stress of said clamping system against said support member;

  
- The locking device comprises a locking key comprising a flange for cooperating with said blind recess to limit the movement of the free end of the ring;
the inner section of the collar is frustoconical in order to make said locking progressively;
- 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 silicon carbide, crystallized silicon, crystallized silica or crystallized alumina.

  

The clamping system 13 preferably comprises a radial clamping device 15 and a locking 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. Preferably according to the invention, the recess 8 is also intended to cooperate with the locking device 17.

  

According to the invention, depending on the application of the watch component, the recess 8 may have a depth of between 5 and 85% of the thickness of the watch component.

  

The locking device 17 is intended to maintain a minimum stress of the clamping system 13 against the axis 2 by limiting the sway of the blades 12 when the overall positioning is considered satisfactory. Thus, the locking device 17 comprises a substantially discoidal locking key 10 comprising a hole 16 and on the lower face a collar 18.

  

Preferably, the hole 16 is through and of larger internal section than the outer diameter of the axis 2 in order to slide without fat friction. The flange 18 of generally annular shape has a substantially frustoconical inner section 19 in order to make the locking of the positioning of the blades 12 progressive.

  

Therefore, with the aid of FIG. 3, it is understood that the locking key 10 is slid against the axis 2 through its hole 16 so that its collar 18 is received in the recess 8. The collar 18, once inserted, thus prevents the displacement of the blades 12 to the recess 8 by abutment of its inner section 19 by locking their positioning.

  

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. In addition, preferably, the locking key 10 is formed of a ductile material such as, for example, a metal.

  

Of course, the present invention is not limited to the example shown but is susceptible to various variations and modifications that will occur to those skilled in the art. In particular, according to the intended applications and / or the material used, the dimensions of the recess 8 and the flange 18 may differ as their spacing relative to the opening 7.


    

Claims (9)

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. 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 crown. 2. Composant horloger (1) selon la revendication 1, caractérisé en ce que ladite couronne est crénelée permettant de former plusieurs lames (12) indépendantes autour de ladite ouverture. 2. watch component (1) according to claim 1, characterized in that said ring 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 système de serrage (13) comporte en outre un dispositif de verrouillage (17) permettant de maintenir une contrainte minimale dudit système de serrage contre ledit élément de support. 5. watch component (1) according to one of the preceding claims, characterized in that the clamping system (13) further comprises a locking device (17) for maintaining a minimum stress of said clamping system against said element support. 6. Composant horloger (1) selon la revendication 5, caractérisé en ce que le dispositif de verrouillage (17) comporte une clé de verrouillage (10) comportant une collerette (18) destinée à coopérer avec ledit évidement borgne afin de limiter le débattement de l'extrémité libre de la couronne (6). 6. watch component (1) according to claim 5, characterized in that the locking device (17) comprises a locking key (10) having a flange (18) intended to cooperate with said blind recess to limit the deflection of the free end of the crown (6). 7. Composant horloger (1) selon la revendication 6, caractérisé en ce que la section intérieure (19) de la collerette (18) est tronconique afin de rendre progressif ledit verrouillage. 7. Watchmaker component (1) according to claim 6, characterized in that the inner section (19) of the flange (18) is frustoconical in order to make said locking progressively. 8. 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. 8. 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. 9. Pièce d'horlogerie caractérisée en ce qu'elle comporte au moins un composant horloger (1) selon l'une des revendications précédentes. 9. Timepiece characterized in that it comprises at least one watch component (1) according to one of the preceding claims.
CH00394/09A 2009-03-17 2009-03-17 Discoidal shaped horlogical component i.e. mobile, for timepiece, has recess separated from opening to authorize displacement of crown, and clamping system exerting radial constraints to permit component to be integrated to element CH700625A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH00394/09A CH700625A2 (en) 2009-03-17 2009-03-17 Discoidal shaped horlogical component i.e. mobile, for timepiece, has recess separated from opening to authorize displacement of crown, and clamping system exerting radial constraints to permit component to be integrated to element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00394/09A CH700625A2 (en) 2009-03-17 2009-03-17 Discoidal shaped horlogical component i.e. mobile, for timepiece, has recess separated from opening to authorize displacement of crown, and clamping system exerting radial constraints to permit component to be integrated to element

Publications (1)

Publication Number Publication Date
CH700625A2 true CH700625A2 (en) 2010-09-30

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CH00394/09A CH700625A2 (en) 2009-03-17 2009-03-17 Discoidal shaped horlogical component i.e. mobile, for timepiece, has recess separated from opening to authorize displacement of crown, and clamping system exerting radial constraints to permit component to be integrated to element

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106707717A (en) * 2017-02-08 2017-05-24 广西天睿精工精密电子有限公司 Quartz watch movement part and processing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106707717A (en) * 2017-02-08 2017-05-24 广西天睿精工精密电子有限公司 Quartz watch movement part and processing method thereof

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