EP3032353B1 - Detachable stud support - Google Patents

Detachable stud support Download PDF

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Publication number
EP3032353B1
EP3032353B1 EP14197478.2A EP14197478A EP3032353B1 EP 3032353 B1 EP3032353 B1 EP 3032353B1 EP 14197478 A EP14197478 A EP 14197478A EP 3032353 B1 EP3032353 B1 EP 3032353B1
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EP
European Patent Office
Prior art keywords
stud
holder
assembly according
holding assembly
balance
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.)
Active
Application number
EP14197478.2A
Other languages
German (de)
French (fr)
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EP3032353A1 (en
Inventor
Julien Christan
Laurent Kaelin
Baptist Wyssbrod
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.)
ETA Manufacture Horlogere Suisse SA
Original Assignee
ETA Manufacture Horlogere Suisse 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 ETA Manufacture Horlogere Suisse SA filed Critical ETA Manufacture Horlogere Suisse SA
Priority to EP14197478.2A priority Critical patent/EP3032353B1/en
Priority to US14/945,900 priority patent/US9411313B2/en
Priority to JP2015236295A priority patent/JP6134372B2/en
Priority to CN201510918742.7A priority patent/CN105700325B/en
Priority to CN201521028870.6U priority patent/CN205608401U/en
Publication of EP3032353A1 publication Critical patent/EP3032353A1/en
Priority to HK16111557.4A priority patent/HK1223425A1/en
Application granted granted Critical
Publication of EP3032353B1 publication Critical patent/EP3032353B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/34—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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/325—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring in a fixed position, e.g. using a block

Definitions

  • a regulating member comprising a sprung balance device.
  • the inner end of the hairspring is fixed to a ferrule provided on the axis of pivoting of the balance.
  • a peg holder housing a pin in combination with a clamping screw for tightening the bolt against the portion of the hairspring engaged in the bolt carrier.
  • the bolt carrier is conventionally attached to a cock also serving to fix one end of the axis of the balance.
  • the manipulations to be performed with these various elements are delicate because access is restricted and the parts are very small.
  • the spiral clamping screw or peg holder it is common for the spiral clamping screw or peg holder to come loose, and / or be lost during handling such as adjusting the active length of the hairspring.
  • the document CH76336 describes a door stud with an elastic arm holding the stud.
  • the object of the invention is to overcome the drawbacks of the prior art by proposing to provide a support or support assembly for a spiral watch spring which allows a simplified assembly or disassembly of the stud.
  • An advantage of this invention is that it allows a simple assembly / disassembly of the piton.
  • the elastic means comprise at least one arm, the free end of said arm carrying the second stop.
  • the elastic means comprise two arms extending from said base, the arms being integral with each other and having a convex shape.
  • the two arms forming the elastic means are symmetrical with respect to the longitudinal axis of said base.
  • each of the two arms comprise a notch.
  • the bolt carrier is made of a plastic material.
  • the bolt carrier is made of a metallic material.
  • the bolt carrier is made of a monocrystalline material.
  • the attachment means comprise a hole arranged on the balance bridge cooperating with a first hole of the stud holder and a screw inserted into the two holes.
  • the attachment means further comprise a stud arranged on the balance bridge and a second hole arranged on the stud holder, said stud cooperating with the second hole.
  • the attachment means further comprise a stud arranged on the stud holder and a second hole arranged on the balance bridge, said stud cooperating with the second hole.
  • the attachment means further comprise a recess arranged on the balance bridge and a projection arranged on the stud holder, said recess cooperating with said projection.
  • the first hole has an arcuate shape allowing the bolt carrier to pivot angularly.
  • the bolt carrier and the balance bridge are monobloc.
  • the present invention proceeds from the general idea of providing a support or support assembly of a spiral clock spring for mounting / dismounting of the simplest piton.
  • FIGS. 1a to 1d are schematic views of a holding or supporting assembly 1 of a spiral spring clock according to a first embodiment.
  • This holding assembly 1 comprises a peg carrier 3 arranged to be fixed to the balance bridge 5 also called cock via fastening means 7.
  • the retaining assembly also comprises a peg 9 fixed on a coil of the spiral spring.
  • the bolt carrier 3 comprises a base 30 having a longitudinal axis.
  • the base 30 may be of any shape. From this base 30 extends a first stop 32. This first stop is in the form of a protrusion of the base 30.
  • the bolt carrier 3 also comprises elastic means 34 provided for fixing the bolt 9 to the bolt carrier.
  • the resilient means comprise an arm 35.
  • This arm 35 extends from the base 30 in a direction similar to that of the first stop 32, that is to say in a direction similar to that of the longitudinal axis.
  • This arm 35 has a rectilinear shape ending in a bend and has a free end at which a second stop 36 is arranged.
  • the elastic arm 35 and the second stop 36 are made so that the second stop 36 is, in an initial position, opposite the first stop 32 when the elastic arm 34 is in rest mode, that is to say that no constraint is applied to it.
  • a space 4 is present between the first stop 32 and the second stop 36, this space forming a housing for the peak 9.
  • the elastic arm 34 is designed to naturally exert a force on the stud 9 when it is placed in the housing 4 present between the first stop 32 and the second stop 36 as visible in FIG. figure 1c .
  • This elastic deformation causes a displacement of the second stop 36 relative to the first stop 34 as visible in FIG. figure 1b .
  • This displacement tends to enlarge the housing.
  • This enlargement of the housing 4 makes it possible to place the stud or to release the stud 9.
  • the displacement of the second stop 36 with respect to the first stop 32 tends to reduce the stress applied to the stud. piton 9.
  • This embodiment has the advantage of being simple because there is no screw or complex manipulation to do. Just move the elastic arm to release the stud 9 or to insert it into the housing. In addition this system allows the mounting or dismounting of the piton without shock.
  • the elastic arm 35 has a non-rectilinear shape.
  • the arm can be curved to have a convex or concave profile as visible in the figure 1d .
  • the elastic means 340 comprise two elastic arms 350.
  • Each elastic arm 350 comprises a first end and a second end. These arms 350 extend from the base 300, via the first end, in a direction similar to that of the first stop 320, that is to say in a direction similar to that of the longitudinal axis.
  • the two elastic arms 350 are secured at their second end.
  • the second stop 360 is arranged to be opposite the first stop 320.
  • the two elastic arms 350 each have a curvature.
  • This curvature is preferentially convex.
  • This convex shape of the elastic arms 350 allows assembly / disassembly of the piton 9 simplified. Indeed, for the mounting / disassembly of the stud, a stress C 'is applied simultaneously on the two elastic arms 350. This stress C' applied to each elastic arm 350 causes a deformation of the arms 350. This deformation tends to bring them closer as visible at the figure 2b .
  • the deformation of the arms 350 causes a displacement of the second stop 360.
  • This displacement of the second stop is characterized in that said second abutment 360 moves away from the first abutment 320 then enlarging the housing 4 located between the first stop stop 320 and the second stop 360.
  • This enlargement of the housing makes it possible to accommodate or easily dislodge the piton 9.
  • the pin 9 is immobilized on the first stop 320
  • the piton 9 is sized to have a larger size than that of the dwelling. therefore, when the second stop 360 moves to return to the initial position that is to say its position when the elastic arms 350 are at rest, it can not find exactly its initial position because of the larger size of the peak 9.
  • the second stop 360 thus exerts a force on said peak 9 in order to maintain it between the first stop 320 and the second stop 360.
  • each elastic arm comprises a notch 352 on its outer surface. These notches 352 are used as specific areas allowing the tool used to exert the pressure on the elastic arms 350 to be positioned there and not to slide during assembly or disassembly.
  • attachment means 7 are provided.
  • the attachment means 7 comprise a through hole or not 70 arranged on the pendulum bridge associated with a through hole 71 arranged on the bolt carrier. These two holes allow the use of a screw 72 for securing the bolt carrier with the balance bridge.
  • This single screw 72 for attaching the bolt carrier 3 to the balance bridge 5 allows to use it as axis of rotation. Indeed, it is conceivable to use this single attachment point to allow the angular adjustment of the bolt carrier, the operator rotating the bolt carrier around the axis of the screw.
  • the fastening means 7 comprise a through hole or not 70 arranged on the balance bridge 5 and a first through hole 71 arranged on the stud holder 3. These two holes allow the use of a screw 72 for the fastening
  • the attachment means 7 further comprise a pin 74 and a second hole 75 passing through or not.
  • the stud 74 can be arranged on the stud holder 3 and the second hole 75 arranged on the balance bridge as visible in FIG. figure 4a or conversely as visible to the Figure 4b and 4c .
  • This stud pair 74 - second hole 75 is used to stabilize the position of the bolt carrier 3 relative to the balance bridge 5. Indeed, having the stud 74 which fits into the second hole 75 can block the angular movements when the operator fixes the screw 72. Indeed, without the presence of the stud 74, there is a risk of angular displacement of the bolt carrier 3 when screwing the screw 72 to secure the bolt carrier 3 to the bridge balance 5.
  • the first hole 71 arranged on the bolt carrier 3 in which the screw 72 is inserted may take the form of an oblong hole or a groove.
  • This groove forms an arc so as to adjust the angular position of the bolt carrier 3.
  • the pin 74 serves as a pivot axis allowing, after loosening the screw, to pivot the bolt carrier 3 to adjust its position.
  • the fastening means 7 comprise a hole 70 passing through or not arranged on the rocker arm 5 and a first through hole 71 arranged on the stud holder 3. These two holes allow the use of a screw 72 for the fastening the peg carrier with the pendulum bridge.
  • the attachment means 7 further comprise guiding means used to stabilize the position of the bolt carrier and serve as a pivot axis for the angular adjustment of said bolt carrier.
  • the guide means comprise a recess 76 arranged on the stud holder and a protrusion or protrusion 77 arranged on the balance bridge.
  • This recess 76 and the projection 77 are made so as to cooperate with each other, the protrusion 77 can penetrate the recess 76.
  • the recess 76 has a shape of a circular arc.
  • the projection 77 may be dimensioned to leave no freedom of movement to the bolt carrier 3 or on the contrary it may be sized to allow an angular adjustment of the position of the bolt carrier.
  • the protrusion 77 and the recess 76 have an arc shape. If the recess is angularly larger than the projection then the peg holder can be adjustable if the hole 70 is also in the form of an arc.
  • the attachment means 7 comprise the guiding means used for the third alternative, ie a recess 76 arranged on the bolt carrier and a projection 77 arranged on the pendulum bridge.
  • the attachment means 7 further comprises a brake78.
  • This brake 78 visible at the figure 7 consists of a flexible arm. This flexible arm extends from the base in a direction opposite to that of the first stop. This flexible arm acts on the balance bridge so that said flexible arm tends to limit the rotation of the stud holder 3 by friction.
  • the bolt carrier 3 can be placed on the upper surface of the balance bridge 5 but also at the level of the lower surface, that is to say the surface opposite the spiral. This configuration at the level of the lower surface makes it possible to bring the stud 9 closer to the balance shaft. This then makes possible the use of small diameter spirals.
  • the bolt carrier 3 can be made of a plastic material such as polyurethane.
  • the advantage of this material is that it can be easily shaped by molding techniques and thus ensure good reproducibility. Moreover, this material has good mechanical properties since it is easily deformable while having good wear resistance.
  • the metallic materials are usable. These materials fall into two categories: crystalline materials and amorphous materials.
  • the crystalline materials can be pure metals such as iron or aluminum or alloys such as brass, steel. These metallic materials have a first advantage of having good mechanical characteristics. Indeed, the metals have a large elastic limit allowing them to undergo a high stress before deforming plastically. For example, aluminum with an elastic limit of 180 to 240 GPa, the steel has an elastic limit of 235 to 1500 GPa according to the type of steel whereas the laminated wood glued to an elastic limit of 32GPa.
  • these metal materials have the advantage of being easily shaped. Indeed, it is possible to form them by molding, by casting or injection into a mold or by stamping that is to say by cutting in a press.
  • Amorphous metals also called metallic glasses are materials whose atoms are not structured between them. Indeed, in the case of an amorphous material, the ratio ⁇ e / E is increased by elevation of the elastic limit ⁇ e. The material therefore sees the stress, beyond which it does not resume its initial shape, increase. This improvement of the ratio ⁇ e / E then allows a larger deformation. This optimizes the dimensions of the bolt carrier and the elastic arms according to whether one wishes to vary the pressure applied by the second stop on the bolt carrier.
  • amorphous materials have the particular characteristic of softening while remaining amorphous in a given temperature range [Tx - Tg] specific to each alloy (with Tx: crystallization temperature and Tg: glass transition temperature). It is thus possible to shape them under a relatively low stress and at a low temperature. This makes it possible to reproduce very precisely fine geometries because the viscosity of the alloy decreases sharply and the latter thus marries all the details of the mold.
  • Another solution is to use a monocrystalline material such as silicon.
  • This material has friction-resistant properties, high yield strength and low density. This material is also attractive because of its antimagnetic properties and its high resistance to corrosion.
  • a material such as silicon may be used because the system according to the present invention allows assembly / disassembly of the stud 9 without shock.
  • the bolt carrier 3 and the pendulum bridge 5 are monoblock that is to say they form a single piece.
  • the balance bridge 5 serves as a base 3 comprising the first stop and from which the elastic arm or arms 35, 350 forming the elastic means 34, 340 extend.
  • This third embodiment makes it possible to dispense with the fastening means 7 of the stud holder 3 to the balance bridge 5. Consequently, there is a risk of misplacement when mounting the stud holder to the balance bridge.
  • this third embodiment makes it possible to lower the costs because there is only one part instead of two and one less process step.
  • the first stop may be configured to serve as a stop for the elastic arms.
  • the first stop 320a visible to the figure 8 is designed to extend in width so as to have a greater width than that of the base 300. This feature makes it possible to limit the displacement of the arms 350 when the stress C 'is applied. Consequently, the deformation of the arms 350 is limited and the risk of breakage decreases.
  • the stud, the first abutment and / or the second abutment are provided with a dish so as to prevent the rotation of the stud on itself.

Description

La présente invention concerne un ensemble de maintien ou d'appui d'un ressort spiral d'horlogerie, comportant un piton et un porte-piton, lequel porte-piton comporte :

  • une base comportant une première butée s'étendant selon un axe longitudinal de ladite base ;
  • des moyens de fixation dudit porte-piton à un mécanisme d'échappement.
The present invention relates to a holding or supporting assembly of a clockwork spiral spring, comprising a stud and a stud holder, which stud holder comprises:
  • a base having a first stop extending along a longitudinal axis of said base;
  • means for fixing said bolt carrier to an exhaust mechanism.

ART ANTÉRIEURPRIOR ART

Dans une montre mécanique, il est d'usage d'utiliser un organe régulateur comportant un dispositif à balancier-spiral. De façon classique, l'extrémité interne du spiral est fixée à une virole prévue sur l'axe de pivotement du balancier. Afin de fixer et positionner l'extrémité extérieure du spiral, il est connu d'utiliser un porte-piton logeant un piton, en association avec une vis de serrage permettant de serrer le piton contre la portion du spiral engagée dans le porte-piton.In a mechanical watch, it is customary to use a regulating member comprising a sprung balance device. Conventionally, the inner end of the hairspring is fixed to a ferrule provided on the axis of pivoting of the balance. In order to fix and position the outer end of the hairspring, it is known to use a peg holder housing a pin, in combination with a clamping screw for tightening the bolt against the portion of the hairspring engaged in the bolt carrier.

Dans un tel ensemble, le porte-piton est classiquement fixé à un coq servant également à fixer une des extrémités de l'axe du balancier. En pratique, lors du montage et/ou du réglage, les manipulations à effectuer avec ces différents éléments sont délicates, car l'accès est restreint et les pièces sont de très petites dimensions. En outre, avec de telles configurations, il est courant que la vis de serrage du spiral ou le porte-piton se détache, et/ou soit perdu lors d'une manipulation telle que l'ajustement de la longueur active du spiral.In such an assembly, the bolt carrier is conventionally attached to a cock also serving to fix one end of the axis of the balance. In practice, during assembly and / or adjustment, the manipulations to be performed with these various elements are delicate because access is restricted and the parts are very small. In addition, with such configurations, it is common for the spiral clamping screw or peg holder to come loose, and / or be lost during handling such as adjusting the active length of the hairspring.

Le document CH76336 décrit un porte piton comportant un bras élastique de maintien du piton.The document CH76336 describes a door stud with an elastic arm holding the stud.

RESUMÉ DE L'INVENTIONSUMMARY OF THE INVENTION

L'invention a pour but de pallier les inconvénients de l'art antérieur en proposant de fournir un ensemble de maintien ou d'appui d'un ressort spiral d'horlogerie qui permet un montage ou un démontage simplifié du piton.The object of the invention is to overcome the drawbacks of the prior art by proposing to provide a support or support assembly for a spiral watch spring which allows a simplified assembly or disassembly of the stud.

A cet effet, la présente invention concerne un ensemble de maintien ou d'appui d'un ressort spiral d'horlogerie, comportant un piton et un porte-piton, lequel porte-piton comporte :

  • une base comportant une première butée s'étendant selon un axe longitudinal de ladite base ;
  • des moyens d'attache dudit porte-piton à un pont de balancier,
caractérisé en ce que ledit porte-piton comporte en outre des moyens élastiques munis d'une seconde butée, les moyens élastique s'étendant selon ledit axe longitudinal de ladite base de sorte que la seconde butée se trouve en regard de la première butée, l'espace entre ladite première butée et ladite seconde butée formant un logement pour ledit piton, et en ce que les moyens élastiques sont réalisés de sorte à exercer naturellement une contrainte sur le piton lorsque celui-ci est placé dans le logement, le logement pouvant être agrandi pour libérer le piton par déformation desdits moyens élastiques, lesdits moyens élastiques comportant deux bras s'étendant depuis ladite base, les bras étant solidaires entre eux et ayant une forme convexe de manière que l'application d'une contrainte sur les deux bras bras pour les rapprocher entraine un déplacement de la seconde butée tendant à agrandir le logement.For this purpose, the present invention relates to a holding or supporting assembly of a clockwork spiral spring, comprising a pin and a bolt carrier, which bolt carrier comprises:
  • a base having a first stop extending along a longitudinal axis of said base;
  • means for attaching said bolt carrier to a balance bridge,
characterized in that said bolt carrier further comprises elastic means provided with a second abutment, the elastic means extending along said longitudinal axis of said base so that the second abutment is opposite the first abutment, space between said first stop and said second stop forming a housing for said peak, and in that the elastic means are made so as to naturally exert a stress on the peak when it is placed in the housing, the housing can be enlarged to release the peak by deformation of said elastic means, said elastic means having two arms extending from said base, the arms being integral with each other and having a convex shape so that the application of a stress on the two arms arms to bring them closer causes a displacement of the second stop tending to enlarge the housing.

Un avantage de cette invention est qu'elle permet un montage/démontage simple du piton.An advantage of this invention is that it allows a simple assembly / disassembly of the piton.

Dans un premier mode de réalisation non compris dans l'invention, les moyens élastiques comportent au moins un bras, l'extrémité libre dudit bras portant la seconde butée.In a first embodiment not included in the invention, the elastic means comprise at least one arm, the free end of said arm carrying the second stop.

Dans le mode de réalisation préféré, les moyens élastiques comportent deux bras s'étendant depuis ladite base, les bras étant solidaires entre eux et ayant une forme convexe.In the preferred embodiment, the elastic means comprise two arms extending from said base, the arms being integral with each other and having a convex shape.

Dans un autre mode de réalisation avantageux, les deux bras formant les moyens élastiques sont symétriques par rapport à l'axe longitudinal de ladite base.In another advantageous embodiment, the two arms forming the elastic means are symmetrical with respect to the longitudinal axis of said base.

Dans un autre mode de réalisation avantageux, chacun des deux bras comportent une encoche.In another advantageous embodiment, each of the two arms comprise a notch.

Dans un autre mode de réalisation avantageux, le porte-piton est réalisé en un matériau plastique.In another advantageous embodiment, the bolt carrier is made of a plastic material.

Dans un autre mode de réalisation avantageux, le porte-piton est réalisé en un matériau métallique.In another advantageous embodiment, the bolt carrier is made of a metallic material.

Dans un autre mode de réalisation avantageux, le porte-piton est réalisé en un matériau monocristallin.In another advantageous embodiment, the bolt carrier is made of a monocrystalline material.

Dans un autre mode de réalisation avantageux, les moyens d'attache comportent un trou agencé sur le pont de balancier coopérant avec un premier trou du porte-piton et une vis s'insérant dans les deux trous.In another advantageous embodiment, the attachment means comprise a hole arranged on the balance bridge cooperating with a first hole of the stud holder and a screw inserted into the two holes.

Dans un autre mode de réalisation avantageux, les moyens d'attache comportent en outre un téton agencé sur le pont de balancier et un second trou agencé sur le porte-piton, ledit téton coopérant avec le second trou.In another advantageous embodiment, the attachment means further comprise a stud arranged on the balance bridge and a second hole arranged on the stud holder, said stud cooperating with the second hole.

Dans un autre mode de réalisation avantageux, les moyens d'attache comportent en outre un téton agencé sur le porte-piton et un second trou agencé sur le pont de balancier, ledit téton coopérant avec le second trou.In another advantageous embodiment, the attachment means further comprise a stud arranged on the stud holder and a second hole arranged on the balance bridge, said stud cooperating with the second hole.

Dans un autre mode de réalisation avantageux, les moyens d'attache comportent en outre un évidement agencé sur le pont de balancier et une saillie agencée sur le porte-piton, ledit évidement coopérant avec ladite saillie.In another advantageous embodiment, the attachment means further comprise a recess arranged on the balance bridge and a projection arranged on the stud holder, said recess cooperating with said projection.

Dans un autre mode de réalisation avantageux, le premier trou a une forme d'arc de cercle permettant au porte-piton de pivoter angulairement.In another advantageous embodiment, the first hole has an arcuate shape allowing the bolt carrier to pivot angularly.

Dans un autre mode de réalisation avantageux, le porte-piton et le pont de balancier sont monoblocs.In another advantageous embodiment, the bolt carrier and the balance bridge are monobloc.

BREVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

Les buts, avantages et caractéristiques de l'invention apparaîtront plus clairement dans la description détaillée suivante d'au moins une forme de réalisation de l'invention donnée uniquement à titre d'exemple non limitatif et illustrée par les dessins annexés sur lesquels :

  • Les figures 1a à 1d représentent un schéma d'un premier mode de réalisation de l'ensemble de maintien ;
  • Les figures 2a à 2d représentent un schéma d'un second mode de réalisation de l'ensemble de maintien selon l'invention;
  • Les figures 3a à 3b représentent un schéma d'une première alternative des moyens d'attaches selon l'invention;
  • Les figures 4a à 4c représentent un schéma d'une seconde alternative des moyens d'attaches selon l'invention;
  • la figure 5 représente un schéma d'une variante de la seconde alternative des moyens d'attaches selon l'invention;
  • la figure 6 représente un schéma d'une troisième alternative des moyens d'attaches selon l'invention;
  • la figure 7 représente un schéma d'une quatrième alternative des moyens d'attaches selon l'invention;
  • la figure 8 représente un schéma d'une variante de l'invention;
The objects, advantages and features of the invention will appear more clearly in the following detailed description of at least one embodiment of the invention given solely by way of nonlimiting example and illustrated by the appended drawings in which:
  • The Figures 1a to 1d represent a diagram of a first embodiment of the holding assembly;
  • The Figures 2a to 2d represent a diagram of a second embodiment of the holding assembly according to the invention;
  • The Figures 3a to 3b represent a diagram of a first alternative means of fasteners according to the invention;
  • The Figures 4a to 4c represent a diagram of a second alternative means of fasteners according to the invention;
  • the figure 5 represents a diagram of a variant of the second alternative means of fasteners according to the invention;
  • the figure 6 represents a diagram of a third alternative means of fasteners according to the invention;
  • the figure 7 represents a diagram of a fourth alternative means of fasteners according to the invention;
  • the figure 8 represents a diagram of a variant of the invention;

DESCRIPTION DETAILLEEDETAILED DESCRIPTION

La présente invention procède de l'idée générale de fournir un ensemble de maintien ou d'appui d'un ressort spiral d'horlogerie permettant un montage/démontage du piton plus simple.The present invention proceeds from the general idea of providing a support or support assembly of a spiral clock spring for mounting / dismounting of the simplest piton.

Sur les figures 1a à 1d sont représentées des vues schématiques d'un ensemble de maintien ou d'appui 1 d'un ressort spiral d'horlogerie selon un premier mode de réalisation. Cet ensemble de maintien 1 comporte un porte-piton 3 agencé pour être fixé au pont de balancier 5 aussi appelé coq via des moyens d'attache 7. L'ensemble de maintien comporte également un piton 9 fixé sur une spire du ressort spiral.On the Figures 1a to 1d are schematic views of a holding or supporting assembly 1 of a spiral spring clock according to a first embodiment. This holding assembly 1 comprises a peg carrier 3 arranged to be fixed to the balance bridge 5 also called cock via fastening means 7. The retaining assembly also comprises a peg 9 fixed on a coil of the spiral spring.

Le porte-piton 3 comporte une base 30 présentant un axe longitudinal. La base 30 pourra être de forme quelconque. A partir de cette base 30 s'étend une première butée 32. Cette première butée se présente sous la forme d'une excroissance de la base 30.The bolt carrier 3 comprises a base 30 having a longitudinal axis. The base 30 may be of any shape. From this base 30 extends a first stop 32. This first stop is in the form of a protrusion of the base 30.

Avantageusement ; le porte-piton 3 comprend également des moyens élastiques 34 prévus pour la fixation du piton 9 au porte-piton.Advantageously; the bolt carrier 3 also comprises elastic means 34 provided for fixing the bolt 9 to the bolt carrier.

Dans le premier mode de réalisation visible à la figure 1a, les moyens élastiques comprennent un bras 35. Ce bras 35 s'étend de la base 30 dans une direction similaire à celle de la première butée 32 c'est-à-dire dans une direction similaire à celle de l'axe longitudinal. Ce bras 35 présente une forme rectiligne se finissant par un coude et comporte une extrémité libre au niveau de laquelle une seconde butée 36 est agencée. Le bras élastique 35 et la seconde butée 36 sont réalisés de sorte que la seconde butée 36 se trouve, dans une position initiale, en regard de la première butée 32 lorsque le bras élastique 34 est en mode repos c'est-à-dire qu'aucune contrainte ne lui est appliquée.In the first embodiment visible at the figure 1a , the resilient means comprise an arm 35. This arm 35 extends from the base 30 in a direction similar to that of the first stop 32, that is to say in a direction similar to that of the longitudinal axis. This arm 35 has a rectilinear shape ending in a bend and has a free end at which a second stop 36 is arranged. The elastic arm 35 and the second stop 36 are made so that the second stop 36 is, in an initial position, opposite the first stop 32 when the elastic arm 34 is in rest mode, that is to say that no constraint is applied to it.

Dans ce cas-là, un espace 4 est présent entre la première butée 32 et la seconde butée 36, cet espace formant un logement pour le piton 9.In this case, a space 4 is present between the first stop 32 and the second stop 36, this space forming a housing for the peak 9.

Astucieusement selon l'invention, le bras élastique 34 est conçu pour exercer naturellement une force sur le piton 9 lorsque celui-ci est placé dans le logement 4 présent entre la première butée 32 et la seconde butée 36 comme visible à la figure 1c.Cleverly according to the invention, the elastic arm 34 is designed to naturally exert a force on the stud 9 when it is placed in the housing 4 present between the first stop 32 and the second stop 36 as visible in FIG. figure 1c .

Dès lors, pour monter ou démonter le piton 9 sur le porte-piton 3, une contrainte C doit être exercée sur le bras 65. Cette contrainte C est exercée sur le bras élastique 34 de sorte à le déformer élastiquement.Therefore, to mount or dismount the stud 9 on the stud holder 3, a stress C must be exerted on the arm 65. This stress C is exerted on the elastic arm 34 so as to deform elastically.

Cette déformation élastique entraîne un déplacement de la seconde butée 36 par rapport à la première butée 34 comme visible à la figure 1b. Ce déplacement tend à agrandir le logement. Cet agrandissement du logement 4 permet d'y placer le piton ou de dégager le piton 9. Dans le cas du démontage du piton 9, le déplacement de la seconde butée 36 par rapport à la première butée 32 tend à diminuer la contrainte appliquée sur le piton 9.This elastic deformation causes a displacement of the second stop 36 relative to the first stop 34 as visible in FIG. figure 1b . This displacement tends to enlarge the housing. This enlargement of the housing 4 makes it possible to place the stud or to release the stud 9. In the case of the disassembly of the stud 9, the displacement of the second stop 36 with respect to the first stop 32 tends to reduce the stress applied to the stud. piton 9.

Ce mode de réalisation présente l'avantage d'être simple car il n'y a aucune vis ou manipulation complexe à faire. Il suffit juste d'écarter le bras élastique pour libérer le piton 9 ou pour l'insérer dans le logement. De plus ce système permet le montage ou le démontage du piton sans choc.This embodiment has the advantage of being simple because there is no screw or complex manipulation to do. Just move the elastic arm to release the stud 9 or to insert it into the housing. In addition this system allows the mounting or dismounting of the piton without shock.

Dans une variante de ce premier mode de réalisation, le bras élastique 35 présente une forme non rectiligne. Par exemple le bras peut être courbe pour avoir un profil convexe ou concave comme visible à la figure 1d.In a variant of this first embodiment, the elastic arm 35 has a non-rectilinear shape. For example the arm can be curved to have a convex or concave profile as visible in the figure 1d .

Dans un deuxième mode de réalisation visible à la figure 2a, les moyens élastiques 340 comprennent deux bras élastiques 350. Chaque bras élastique 350 comprend une première extrémité et une seconde extrémité. Ces bras 350 s'étendent de la base 300, via la première extrémité, dans une direction similaire à celle de la première butée 320 c'est-à-dire dans une direction similaire à celle de l'axe longitudinal.In a second embodiment visible at the figure 2a , the elastic means 340 comprise two elastic arms 350. Each elastic arm 350 comprises a first end and a second end. These arms 350 extend from the base 300, via the first end, in a direction similar to that of the first stop 320, that is to say in a direction similar to that of the longitudinal axis.

Dans ce second mode de réalisation, les deux bras élastiques 350 sont solidaires au niveau de leur seconde extrémité. Au niveau de ce point de solidarisation 351, la seconde butée 360 est agencée pour être en regard de la première butée 320.In this second embodiment, the two elastic arms 350 are secured at their second end. At this point of attachment 351, the second stop 360 is arranged to be opposite the first stop 320.

Astucieusement selon l'invention, les deux bras élastiques 350 présentent chacun une courbure. Cette courbure est préférentiellement convexe. Cette forme convexe des bras élastiques 350 permet un montage/démontage du piton 9 simplifié. Effectivement, pour le montage/démontage du piton, une contrainte C' est appliquée simultanément sur le deux bras élastiques 350. Cette contrainte C' appliquée sur chaque bras élastique 350 entraine une déformation des bras 350. Cette déformation tend à les faire se rapprocher comme visible à la figure 2b.Cleverly according to the invention, the two elastic arms 350 each have a curvature. This curvature is preferentially convex. This convex shape of the elastic arms 350 allows assembly / disassembly of the piton 9 simplified. Indeed, for the mounting / disassembly of the stud, a stress C 'is applied simultaneously on the two elastic arms 350. This stress C' applied to each elastic arm 350 causes a deformation of the arms 350. This deformation tends to bring them closer as visible at the figure 2b .

On constate alors que la déformation des bras 350 entraîne un déplacement de la seconde butée 360. Ce déplacement de la seconde butée se caractérise en ce que ladite seconde butée 360 s'éloigne de la première butée 320 agrandissant alors le logement 4 situé entre la première butée 320 et la seconde butée 360.It can be seen that the deformation of the arms 350 causes a displacement of the second stop 360. This displacement of the second stop is characterized in that said second abutment 360 moves away from the first abutment 320 then enlarging the housing 4 located between the first stop stop 320 and the second stop 360.

Cet agrandissement du logement permet alors d'y loger ou d'y déloger facilement le piton 9.This enlargement of the housing makes it possible to accommodate or easily dislodge the piton 9.

Lorsque l'opérateur veut monter le piton, il applique une contrainte C' sur les deux bras élastiques 350. Cette contrainte ou pression C' peut être appliquée via un outil comme une pince. Cette contrainte C' appliquée par l'opérateur tend à déformer les bras 350 pour que la seconde butée 360 se déplace et agrandissent le logement.When the operator wants to mount the peak, it applies a stress C 'on the two elastic arms 350. This stress or pressure C' can be applied via a tool such as a clamp. This constraint C 'applied by the operator tends to deform the arms 350 so that the second stop 360 moves and enlarges the housing.

L'opérateur se munit alors du piton 9 et vient le placer en appui sur la première butée 320. Celle-ci peut être munie d'une encoche pour immobiliser le piton 9. Lorsque le piton 9 est immobilisé sur la première butée 320, l'opérateur relâche la pression C' exercée sur les bras élastiques 350 entraînant un déplacement de la seconde butée 360. Ce déplacement tend à faire rapprocher la seconde butée 360 de la première butée 320 jusqu'à ce que la seconde butée 360 entre en contact avec le piton 9 comme visible à la figure 2c. Il sera prévu que le piton 9 soit dimensionné afin d'avoir une taille plus importante que celle du logement 4. Par conséquent, lorsque la seconde butée 360 se déplace pour revenir à la position initiale c'est-à-dire sa position quand les bras élastiques 350 sont au repos, elle ne peut retrouver exactement sa position initiale du fait de la taille plus importante du piton 9.The operator then equips himself with the pin 9 and places it bearing on the first stop 320. This can be provided with a notch to immobilize the pin 9. When the pin 9 is immobilized on the first stop 320, the operator releases the pressure C 'exerted on the elastic arms 350 causing a displacement of the second stop 360. This movement tends to bring the second stop 360 closer to the first stop 320 until the second stop 360 comes into contact with the piton 9 as visible to the Figure 2c . It will be expected that the piton 9 is sized to have a larger size than that of the dwelling. therefore, when the second stop 360 moves to return to the initial position that is to say its position when the elastic arms 350 are at rest, it can not find exactly its initial position because of the larger size of the peak 9.

La seconde butée 360 exerce donc une force sur ledit piton 9 afin de le maintenir entre la première butée 320 et la seconde butée 360.The second stop 360 thus exerts a force on said peak 9 in order to maintain it between the first stop 320 and the second stop 360.

Lorsque l'opérateur veut démonter le piton 9, il exerce une contrainte telle une pression C' sur les bras élastiques 350. Cette pression entraîne une déformation des bras élastiques 350 et par conséquent un déplacement de la seconde butée 360. Ce déplacement agrandit le logement 4 libérant ainsi le piton 9 pour que l'opérateur puisse s'en saisir.When the operator wants to remove the stud 9, he exerts a stress such as a pressure C 'on the elastic arms 350. This pressure causes a deformation of the elastic arms 350 and consequently a displacement of the second stop 360. This movement enlarges the housing 4 thus releasing the pin 9 so that the operator can grasp it.

Dans une variante de ce second mode de réalisation visible à la figure 2d, chaque bras élastique comprend une encoche 352 sur sa surface extérieure. Ces encoches 352 sont utilisées comme zones spécifiques permettant à l'outil utilisé pour exercer la pression sur les bras élastiques 350 de s'y positionner et de ne pas glisser durant le montage ou le démontage.In a variant of this second embodiment visible in FIG. figure 2d each elastic arm comprises a notch 352 on its outer surface. These notches 352 are used as specific areas allowing the tool used to exert the pressure on the elastic arms 350 to be positioned there and not to slide during assembly or disassembly.

Pour la fixation du porte-piton au pont de balancier, des moyens d'attache 7 sont prévus.For attachment of the peg carrier to the balance bridge, attachment means 7 are provided.

Dans une première alternative visible aux figures 3a et 3b, les moyens d'attache 7 comprennent un trou traversant ou non 70 agencé sur le pont de balancier associé à un trou traversant 71 agencé sur le porte-piton. Ces deux trous permettent l'utilisation d'une vis 72 pour la solidarisation du porte-piton avec le pont de balancier. Cette unique vis 72 pour l'attache du porte-piton 3 au pont de balancier 5 permet de se servir d'elle comme d'axe de rotation. Effectivement, il est envisageable de se servir de cet unique point d'attache pour permettre le réglage angulaire du porte-piton, l'opérateur faisant tourner le porte-piton autour de l'axe de la vis.In a first visible alternative to figures 3a and 3b , the attachment means 7 comprise a through hole or not 70 arranged on the pendulum bridge associated with a through hole 71 arranged on the bolt carrier. These two holes allow the use of a screw 72 for securing the bolt carrier with the balance bridge. This single screw 72 for attaching the bolt carrier 3 to the balance bridge 5 allows to use it as axis of rotation. Indeed, it is conceivable to use this single attachment point to allow the angular adjustment of the bolt carrier, the operator rotating the bolt carrier around the axis of the screw.

Dans une seconde alternative visible à la figure 4a, les moyens d'attache 7 comprennent un trou traversant ou non 70 agencé sur le pont de balancier 5 et un premier trou traversant 71 agencé sur le porte-piton 3. Ces deux trous permettent l'utilisation d'une vis 72 pour la solidarisation du porte-piton 3 avec le pont de balancier 5. Les moyens d'attache 7 comprennent en outre un téton 74 et un second trou 75 traversant ou non. Le téton 74 peut être agencé sur le porte-piton 3 et le second trou 75 agencé sur le pont de balancier comme visible à la figure 4a ou inversement comme visible à la figure 4b et 4c.In a second alternative visible to the figure 4a , the fastening means 7 comprise a through hole or not 70 arranged on the balance bridge 5 and a first through hole 71 arranged on the stud holder 3. These two holes allow the use of a screw 72 for the fastening The attachment means 7 further comprise a pin 74 and a second hole 75 passing through or not. The stud 74 can be arranged on the stud holder 3 and the second hole 75 arranged on the balance bridge as visible in FIG. figure 4a or conversely as visible to the Figure 4b and 4c .

Ce couple téton 74 - second trou 75 est utilisé pour stabiliser la position du porte-piton 3 par rapport au pont de balancier 5. En effet, le fait d'avoir le téton 74 qui s'insère dans le second trou 75 permet de bloquer les mouvements angulaires lorsque l'opérateur fixe la vis 72. Effectivement, sans la présence du téton 74, il y a un risque de déplacement angulaire du porte-piton 3 lors du vissage de la vis 72 pour solidariser le porte-piton 3 au pont de balancier 5.This stud pair 74 - second hole 75 is used to stabilize the position of the bolt carrier 3 relative to the balance bridge 5. Indeed, having the stud 74 which fits into the second hole 75 can block the angular movements when the operator fixes the screw 72. Indeed, without the presence of the stud 74, there is a risk of angular displacement of the bolt carrier 3 when screwing the screw 72 to secure the bolt carrier 3 to the bridge balance 5.

Dans une variante de cette seconde alternative visible à la figure 5, le premier trou 71 agencé sur le porte-piton 3 dans lequel la vis 72 s'insère peut prendre la forme d'un trou oblong ou d'une gorge. Cette gorge forme un arc de cercle de sorte à pouvoir régler la position angulaire du porte-piton 3. Dans ce cas-là, le téton 74 sert d'axe de pivotement permettant, après desserrage de la vis, de pivoter le porte-piton 3 pour régler sa position.In a variant of this second alternative visible to the figure 5 , the first hole 71 arranged on the bolt carrier 3 in which the screw 72 is inserted may take the form of an oblong hole or a groove. This groove forms an arc so as to adjust the angular position of the bolt carrier 3. In this case, the pin 74 serves as a pivot axis allowing, after loosening the screw, to pivot the bolt carrier 3 to adjust its position.

Dans une troisième alternative visible à la figure 6, les moyens d'attache 7 comprennent un trou 70 traversant ou non agencé sur le pont de balancier 5 et un premier trou 71 traversant agencé sur le porte-piton 3. Ces deux trous permettent l'utilisation d'une vis 72 pour la solidarisation du porte-piton avec le pont de balancier. Les moyens d'attache 7 comprennent en outre des moyens de guidage utilisé pour stabiliser la position du porte-piton et servir d'axe de pivotement pour le réglage angulaire dudit porte-piton. Pour cela, les moyens de guidage comprennent un évidement 76 agencé sur le porte-piton et une saillie ou partie saillante 77 agencée sur le pont de balancier. Cet évidement 76 et la saillie 77 sont réalisés de sorte à pouvoir coopérer l'un avec l'autre, la saillie 77 pouvant pénétrer dans l'évidement 76. L'évidement 76 présente une forme d'arc de cercle. Lorsque le porte-piton 3 est monté sur le pont de balancier 5, la saillie 77 s'insère dans l'évidement 76 pour limiter les mouvements dudit porte-piton 3 par rapport au pont de balancier 5.In a third visible alternative to the figure 6 , the fastening means 7 comprise a hole 70 passing through or not arranged on the rocker arm 5 and a first through hole 71 arranged on the stud holder 3. These two holes allow the use of a screw 72 for the fastening the peg carrier with the pendulum bridge. The attachment means 7 further comprise guiding means used to stabilize the position of the bolt carrier and serve as a pivot axis for the angular adjustment of said bolt carrier. For this, the guide means comprise a recess 76 arranged on the stud holder and a protrusion or protrusion 77 arranged on the balance bridge. This recess 76 and the projection 77 are made so as to cooperate with each other, the protrusion 77 can penetrate the recess 76. The recess 76 has a shape of a circular arc. When the bolt carrier 3 is mounted on the rocker bridge 5, the projection 77 fits into the recess 76 to limit the movements of said bolt carrier 3 with respect to the rocker arm 5.

La saillie 77 pourra être dimensionnée pour ne laisser aucune liberté de mouvement au porte-piton 3 ou au contraire elle pourra être dimensionnée afin de permettre un réglage angulaire de la position du porte-piton. Dans l'exemple où la saillie 77 et l'évidement 76 ont une forme d'arc de cercle. Si l'évidement est angulairement plus important que la saillie alors le porte-piton pourra être réglable si le trou 70 est également en forme d'arc de cercle.The projection 77 may be dimensioned to leave no freedom of movement to the bolt carrier 3 or on the contrary it may be sized to allow an angular adjustment of the position of the bolt carrier. In the example where the protrusion 77 and the recess 76 have an arc shape. If the recess is angularly larger than the projection then the peg holder can be adjustable if the hole 70 is also in the form of an arc.

Dans une quatrième alternative, les moyens d'attache 7 comprennent les moyens de guidage utilisés pour la troisième alternative c'est à dire un évidement 76 agencé sur le porte-piton et une saillie 77 agencée sur le pont de balancier. Les moyens d'attaches 7 comprennent en outre un frein78. Ce frein 78 visible à la figure 7 consiste en un bras flexible. Ce bras flexible s'étend depuis la base dans une direction opposée à celle de la première butée. Ce bras flexible agit sur le pont de balancier de sorte que ledit bras flexible tende à limiter la rotation du porte-piton 3 par friction.In a fourth alternative, the attachment means 7 comprise the guiding means used for the third alternative, ie a recess 76 arranged on the bolt carrier and a projection 77 arranged on the pendulum bridge. The attachment means 7 further comprises a brake78. This brake 78 visible at the figure 7 consists of a flexible arm. This flexible arm extends from the base in a direction opposite to that of the first stop. This flexible arm acts on the balance bridge so that said flexible arm tends to limit the rotation of the stud holder 3 by friction.

Bien entendu, on comprendra que le porte-piton 3 peut être placé sur la surface supérieure du pont de balancier 5 mais également au niveau de la surface inférieure c'est-à-dire la surface en regard du spiral. Cette configuration au niveau de la surface inférieure permet de rapprocher le piton 9 de l'axe de balancier. Cela rend alors possible l'utilisation de spiraux de petit diamètre.Of course, it will be understood that the bolt carrier 3 can be placed on the upper surface of the balance bridge 5 but also at the level of the lower surface, that is to say the surface opposite the spiral. This configuration at the level of the lower surface makes it possible to bring the stud 9 closer to the balance shaft. This then makes possible the use of small diameter spirals.

Pour réaliser ce porte-piton 3, plusieurs matériaux sont utilisables. Selon une première solution, le porte-piton 3 peut être réalisé en un matériau plastique comme du polyuréthane. L'avantage de ce matériau est qu'il peut être facilement mis en forme par des techniques de moulage et assurer ainsi une bonne reproductibilité. Par ailleurs, ce matériau présente de bonnes caractéristiques mécaniques puisqu'il est facilement déformable tout en ayant une bonne résistance à l'usure.To achieve this bolt carrier 3, several materials are usable. According to a first solution, the bolt carrier 3 can be made of a plastic material such as polyurethane. The advantage of this material is that it can be easily shaped by molding techniques and thus ensure good reproducibility. Moreover, this material has good mechanical properties since it is easily deformable while having good wear resistance.

Selon une seconde solution, les matériaux métalliques sont utilisables. Ces matériaux se classent en deux catégories : les matériaux cristallins et les matériaux amorphes.According to a second solution, the metallic materials are usable. These materials fall into two categories: crystalline materials and amorphous materials.

Les matériaux cristallins peuvent être des métaux purs comme le fer ou l'aluminium ou des alliages tel que le laiton, l'acier. Ces matériaux métalliques présentent un premier avantage d'avoir de bonnes caractéristiques mécaniques. En effet, les métaux présentent une grande limite élastique leur permettant de subir une grande contrainte avant de se déformer plastiquement. Par exemple, l'aluminium à une limite élastique de 180 à 240 GPa, l'acier a une limite élastique de 235 à 1500 GPa selon le type d'acier alors que le bois lamellé collé à une limite élastique de 32GPa.The crystalline materials can be pure metals such as iron or aluminum or alloys such as brass, steel. These metallic materials have a first advantage of having good mechanical characteristics. Indeed, the metals have a large elastic limit allowing them to undergo a high stress before deforming plastically. For example, aluminum with an elastic limit of 180 to 240 GPa, the steel has an elastic limit of 235 to 1500 GPa according to the type of steel whereas the laminated wood glued to an elastic limit of 32GPa.

De plus, ces matériaux métalliques présentent l'avantage d'être facilement mis en forme. En effet, il est possible de les mettre en forme par moulage, par coulée ou injection dans un moule ou par étampage c'est-à-dire par découpe sous presse.In addition, these metal materials have the advantage of being easily shaped. Indeed, it is possible to form them by molding, by casting or injection into a mold or by stamping that is to say by cutting in a press.

Par ailleurs, il est possible d'utiliser le procédé LIGA consistant en une lithographie aux rayons X suivie d'une galvanisation par électrodéposition et terminée par une étape de formage. Ce procédé LIGA a l'avantage d'être peu coûteux et rapide à mettre en oeuvre tout en assurant une bonne reproductibilité et une grande précision de réalisation.Furthermore, it is possible to use the LIGA process consisting of X-ray lithography followed by electroplating and finished with a forming step. This LIGA process has the advantage of being inexpensive and quick to implement while ensuring good reproducibility and high accuracy of implementation.

Les métaux amorphes appelés aussi verres métalliques sont des matériaux dont les atomes ne sont pas structurés entre eux. En effet, dans le cas d'un matériau amorphe, le rapport σe/E est augmenté par élévation de la limite élastique σe. Le matériau voit donc la contrainte, au-delà de laquelle il ne reprend pas sa forme initiale, augmenter. Cette amélioration du rapport σe/E permet alors une déformation plus importante. Cela permet d'optimiser les dimensions du porte-piton et des bras élastiques selon que l'on veuille faire varier la pression appliquée par la seconde butée sur le porte-piton.Amorphous metals also called metallic glasses are materials whose atoms are not structured between them. Indeed, in the case of an amorphous material, the ratio σe / E is increased by elevation of the elastic limit σe. The material therefore sees the stress, beyond which it does not resume its initial shape, increase. This improvement of the ratio σe / E then allows a larger deformation. This optimizes the dimensions of the bolt carrier and the elastic arms according to whether one wishes to vary the pressure applied by the second stop on the bolt carrier.

Un autre avantage de ces matériaux amorphes est qu'ils ouvrent de nouvelles perspectives de mise en forme permettant l'élaboration de pièces aux formes compliquées avec une plus grande précision. En effet, les métaux amorphes ont la caractéristique particulière de se ramollir tout en restant amorphe dans un intervalle de température [Tx - Tg] donné propre à chaque alliage (avec Tx : température de cristallisation et Tg : température de transition vitreuse). Il est ainsi possible de les mettre en forme sous une contrainte relativement faible et à une température peu élevée. Cela permet alors de reproduire très précisément des géométries fines car la viscosité de l'alliage diminue fortement et ce dernier épouse ainsi tous les détails du moule.Another advantage of these amorphous materials is that they open new perspectives of formatting allowing the development of pieces with complicated shapes with greater precision. Indeed, the amorphous metals have the particular characteristic of softening while remaining amorphous in a given temperature range [Tx - Tg] specific to each alloy (with Tx: crystallization temperature and Tg: glass transition temperature). It is thus possible to shape them under a relatively low stress and at a low temperature. This makes it possible to reproduce very precisely fine geometries because the viscosity of the alloy decreases sharply and the latter thus marries all the details of the mold.

Une autre solution consiste à utiliser un matériau monocristallin comme le silicium. Ce matériau présente des propriétés de résistance aux frictions, une haute limite élastique et une masse volumique faible. Ce matériau est également séduisant à cause de ses propriétés antimagnétiques et sa grande résistance à la corrosion. Un matériau tel que le silicium peut être utilisé car le système selon la présente invention permet un montage/démontage du piton 9 sans choc.Another solution is to use a monocrystalline material such as silicon. This material has friction-resistant properties, high yield strength and low density. This material is also attractive because of its antimagnetic properties and its high resistance to corrosion. A material such as silicon may be used because the system according to the present invention allows assembly / disassembly of the stud 9 without shock.

Pour réaliser une telle pièce en silicium, les méthodes connues de LIGA ou DRIE sont utilisées et permettent une bonne reproductibilité et une grande précision des pièces.To produce such a silicon part, the known methods of LIGA or DRIE are used and allow a good reproducibility and high accuracy of the parts.

Dans un troisième mode de réalisation, le porte-piton 3 et le pont de balancier 5 sont monoblocs c'est-à-dire qu'ils ne forment qu'une seule et même pièce. A ce titre, le pont de balancier 5 sert de base 3 comprenant la première butée et à partir de laquelle le ou les bras élastiques 35, 350 formant les moyens élastiques 34, 340 s'étendent.In a third embodiment, the bolt carrier 3 and the pendulum bridge 5 are monoblock that is to say they form a single piece. As such, the balance bridge 5 serves as a base 3 comprising the first stop and from which the elastic arm or arms 35, 350 forming the elastic means 34, 340 extend.

Ce troisième mode de réalisation permet de s'affranchir des moyens d'attache 7 du porte-piton 3 au pont de balancier 5. Par conséquent, il existe des risques de mauvais positionnement lors du montage du porte-piton au pont de balancier.This third embodiment makes it possible to dispense with the fastening means 7 of the stud holder 3 to the balance bridge 5. Consequently, there is a risk of misplacement when mounting the stud holder to the balance bridge.

Par ailleurs, ce troisième mode de réalisation permet d'abaisser les coûts car il n'y a qu'une pièce au lieu de deux et une étape de procédé en moins.Moreover, this third embodiment makes it possible to lower the costs because there is only one part instead of two and one less process step.

On comprendra que diverses modifications et/ou améliorations et/ou combinaisons évidentes pour l'homme du métier peuvent être apportées aux différents modes de réalisation de l'invention exposée ci-dessus sans sortir du cadre de l'invention défini par les revendications annexées.It will be understood that various modifications and / or improvements and / or combinations obvious to those skilled in the art can be made to the various embodiments of the invention set forth above without departing from the scope of the invention defined by the appended claims.

Par exemple, la première butée peut être configurée pour servir de butée aux bras élastiques. En effet, suivant les dimensions et le matériau constituant les bras, il existe un risque de casse ou de déformation plastique. Pour résoudre ce problème, la première butée 320a visible à la figure 8 est conçue pour s'étendre en largeur de sorte à avoir une largeur plus importante que celle de la base 300. Cette caractéristique permet de limiter le déplacement des bras 350 lorsque la contrainte C' est appliquée. Par conséquent, la déformation des bras 350 est limitée et le risque de casse diminue.For example, the first stop may be configured to serve as a stop for the elastic arms. Indeed, according to the dimensions and the material constituting the arms, there is a risk of breakage or plastic deformation. To solve this problem, the first stop 320a visible to the figure 8 is designed to extend in width so as to have a greater width than that of the base 300. This feature makes it possible to limit the displacement of the arms 350 when the stress C 'is applied. Consequently, the deformation of the arms 350 is limited and the risk of breakage decreases.

Il est également possible que le piton, la première butée et/ou la seconde butée soient munis d'un plat de sorte à empêcher la rotation du piton sur lui-même.It is also possible that the stud, the first abutment and / or the second abutment are provided with a dish so as to prevent the rotation of the stud on itself.

Claims (13)

  1. Assembly for holding or supporting a timepiece balance spring, including a balance spring stud (9) and a stud-holder (3), wherein the stud-holder includes:
    - a base (30, 300) comprising a first stop member (32, 320) extending along a longitudinal axis (L) of said base;
    - means (7) of attaching said stud-holder to a balance-cock (5),
    characterized in that said stud-holder further includes elastic means (34, 340) provided with a second stop member (36, 360), the elastic means extending along said longitudinal axis of said base such that the second stop member is located facing the first stop member, the space between said first stop member and said second stop member forming a housing (4) for said stud, and in that the elastic means are made to naturally exert stress on the stud when the latter is placed in the housing, the housing being capable of enlargement to release the stud by deformation of said elastic means, said elastic means (340) including two arms (350) extending from said base, the arms (350) being joined to each other and having a convex shape such that the application of a stress to the two arms intended to move them closer together causes a displacement of the second stop member (360) intended to enlarge the housing (4).
  2. Holding assembly according to claim 1, characterized in that the two arms forming the elastic means are symmetrical with respect to the longitudinal axis of said base.
  3. Holding assembly according to claim 1, characterized in that each of the two arms includes a notch (352).
  4. Holding assembly according to any of the preceding claims, characterized in that the stud-holder (3) is made of a plastic material.
  5. Holding assembly according to any of claims 1 to 3, characterized in that the stud-holder (3) is made of a metallic material.
  6. Holding assembly according to any of claims 1 to 3, characterized in that the stud-holder (3) is made of a single crystal material.
  7. Holding assembly according to any of the preceding claims, characterized in that the means of attachment (7) include a hole (70) arranged in the balance-cock cooperating with a first hole (71) of the stud-holder and a screw (72) inserted in both holes.
  8. Holding assembly according to claim 7, characterized in that the means of attachment (7) further comprise a lug (74) arranged on the balance-cock and a second hole (75) arranged in the stud-holder, said lug cooperating with the second hole.
  9. Holding assembly according to claim 7, characterized in that the means of attachment (7) further comprise a lug (74) arranged on the stud-holder and a second hole (75) arranged in the balance-cock, said lug cooperating with the second hole.
  10. Holding assembly according to claim 7, characterized in that the means of attachment (7) further comprise a protuberance (77) arranged on the balance-cock and a recess (76) arranged in the stud-holder, said recess cooperating with said protuberance.
  11. Holding assembly according to claim 10, characterized in that said protuberance (77) and said recess (76) have the same dimensions.
  12. Holding assembly according to any of claims 7 to 10, characterized in that the first hole (71) has the shape of an arc of a circle, said recess (76) extending at a greater angle than said protuberance (77) allowing the stud-holder to pivot angularly.
  13. Holding assembly according to any of claims 1 to 6, characterized in that the stud-holder and the balance-cock are in one-piece.
EP14197478.2A 2014-12-11 2014-12-11 Detachable stud support Active EP3032353B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP14197478.2A EP3032353B1 (en) 2014-12-11 2014-12-11 Detachable stud support
US14/945,900 US9411313B2 (en) 2014-12-11 2015-11-19 Balance spring stud-holder
JP2015236295A JP6134372B2 (en) 2014-12-11 2015-12-03 Balance spring stud holder
CN201510918742.7A CN105700325B (en) 2014-12-11 2015-12-10 Hairspring stud retainer
CN201521028870.6U CN205608401U (en) 2014-12-11 2015-12-10 Maintaining assembly
HK16111557.4A HK1223425A1 (en) 2014-12-11 2016-10-04 Balance spring stud-holder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14197478.2A EP3032353B1 (en) 2014-12-11 2014-12-11 Detachable stud support

Publications (2)

Publication Number Publication Date
EP3032353A1 EP3032353A1 (en) 2016-06-15
EP3032353B1 true EP3032353B1 (en) 2019-08-07

Family

ID=52021107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14197478.2A Active EP3032353B1 (en) 2014-12-11 2014-12-11 Detachable stud support

Country Status (5)

Country Link
US (1) US9411313B2 (en)
EP (1) EP3032353B1 (en)
JP (1) JP6134372B2 (en)
CN (2) CN105700325B (en)
HK (1) HK1223425A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3032353B1 (en) * 2014-12-11 2019-08-07 ETA SA Manufacture Horlogère Suisse Detachable stud support
WO2017157540A1 (en) * 2016-03-15 2017-09-21 The Swatch Group Research And Development Ltd Hand comprising an end part, and mounting method
EP3451076B1 (en) * 2017-08-31 2020-07-29 ETA SA Manufacture Horlogère Suisse Stud-holder for a mechanical clockwork movement

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US1037742A (en) * 1911-04-19 1912-09-03 Hamilton Watch Co Hair-spring-stud-holding means.
CH76336A (en) * 1917-07-16 1917-12-01 Edouard Glauser Spiral-holder eyebolt fixing device
US3016688A (en) * 1956-08-03 1962-01-16 Hamilton Watch Co Hairspring stud
JPS4511963Y1 (en) * 1969-08-13 1970-05-27
JPS4923495Y1 (en) * 1970-03-23 1974-06-24
JPS509027Y1 (en) * 1970-07-27 1975-03-18
JPS4934378Y1 (en) * 1973-10-30 1974-09-18
CH614829GA3 (en) * 1976-10-12 1979-12-28 Device for fixing the outer end of a watch hairspring to a framework element of the movement
EP1437634A1 (en) * 2002-12-19 2004-07-14 Glashütter Uhrenbetrieb GmbH Device for fine adjustment of a sprung balance
DE10345918A1 (en) * 2003-10-02 2005-05-12 Lange Uhren Gmbh oscillating system
JP2006234528A (en) * 2005-02-24 2006-09-07 Seiko Instruments Inc Speed governing mechanism and mechanical timepiece equipped with it
WO2013045706A2 (en) * 2011-09-29 2013-04-04 Rolex S.A. Integral assembly of a hairspring and a collet
JP5798434B2 (en) * 2011-10-05 2015-10-21 セイコーインスツル株式会社 Watch bearings, movements, and watches
JP5932380B2 (en) * 2012-02-15 2016-06-08 セイコーインスツル株式会社 Beardball, balance and watch
EP2804055B1 (en) * 2013-05-16 2016-03-09 Blancpain SA. Assembly consisting of a stud and a stud support
EP2876504B1 (en) * 2013-11-20 2017-07-26 ETA SA Manufacture Horlogère Suisse Screwless clock stud holder
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Also Published As

Publication number Publication date
JP2016114601A (en) 2016-06-23
CN205608401U (en) 2016-09-28
HK1223425A1 (en) 2017-07-28
US9411313B2 (en) 2016-08-09
EP3032353A1 (en) 2016-06-15
CN105700325A (en) 2016-06-22
JP6134372B2 (en) 2017-05-24
US20160170375A1 (en) 2016-06-16
CN105700325B (en) 2018-04-13

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