EP1742119A1 - Timepiece and device for fixing a movement in the timepiece case - Google Patents

Timepiece and device for fixing a movement in the timepiece case Download PDF

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Publication number
EP1742119A1
EP1742119A1 EP05106235A EP05106235A EP1742119A1 EP 1742119 A1 EP1742119 A1 EP 1742119A1 EP 05106235 A EP05106235 A EP 05106235A EP 05106235 A EP05106235 A EP 05106235A EP 1742119 A1 EP1742119 A1 EP 1742119A1
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EP
European Patent Office
Prior art keywords
groove
plate
box
watch
lips
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.)
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Application number
EP05106235A
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German (de)
French (fr)
Inventor
Riccardo Pescante
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.)
Bruno Affolter SA
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Bruno Affolter 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.)
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Publication date
Application filed by Bruno Affolter SA filed Critical Bruno Affolter SA
Priority to EP05106235A priority Critical patent/EP1742119A1/en
Priority to PCT/EP2006/064012 priority patent/WO2007006750A2/en
Publication of EP1742119A1 publication Critical patent/EP1742119A1/en
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/04—Mounting the clockwork in the case; Shock absorbing mountings
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/008—Mounting, assembling of components

Definitions

  • the invention relates to the field of watchmaking. It relates more particularly to a watch comprising a box defining a housing, a movement disposed in this housing and a device for fixing the movement in the housing.
  • the watch movement which comprises a cage formed of a plate and bridges mounted thereto, is generally rigidly fixed to the box by its plate. Indeed, practice has shown that an elastic suspension of the movement to the box, as proposed in the patent GB 721 920 (CJ Juillerat ), could generate accelerations greater than those measured with a rigidly fixed motion.
  • the rigid attachment of the plate to the box is usually done by means of screws, fixing keys or a casing ring, exerting pressure on the plate disposed in a recess.
  • the plate undergoes constraints, which can be locally very high. When using screws or fixing wrenches, these stresses appear at the bearing points on the plate. In the case where a casing ring is used, the constraints are in theory better distributed, but inevitable manufacturing imperfections of the different parts, generate, in the same way, local constraints.
  • the plates are metal, such as brass.
  • the stresses experienced by this type of plates can cause a slight local deformation of the metal. These deformations can, in turn, generate constraints on the movement, and disrupt the operation. This problem arises with maximum acuity in ultra-thin watches or skeleton type.
  • certain plates are made of sapphire, primarily for aesthetic purposes.
  • the Corum house which offers a watch model whose sapphire cage is entirely transparent.
  • the sapphire turntables are fragile, and micro-cracks or chips may appear where hard parts strongly and very locally support the plate, for example at the points of tightening, whether using screws or keys fixing.
  • a particle or a chip being introduced between the plate and the circle, can, in the same way, by inelastic transmission of the effort, cause such defects. These last are all the more damaging, that they generate primers of rupture.
  • the present invention aims to overcome the various disadvantages related to the local concentration of stresses on the plate due to the attachment thereof to the box, by proposing a casing structure to avoid any stress gradient on the platinum.
  • the invention relates to a watch comprising a box, which defines a housing, and a movement arranged in this housing and provided with a plate.
  • the watch according to the invention further comprises a fixing member made of plastic material, rigidly mounted on the box, forming a groove, the plate being at least partially clamped in the groove and positioned radially and axially.
  • plastic material is a material whose elastic limit is low and tends to flow quickly under the effect of a constraint, as is the case of plastics in general, but also some other materials, for example metal.
  • the invention also relates to a fixing member of a plate to a box having an annular portion and two lips disposed on either side of the annular portion and extending radially towards the center, which together form a groove.
  • One of the lips has a cone forming a flare to facilitate the engagement of the plate in the groove, and the fastener is formed of a plastic material whose Shore hardness is between 40 and 75.
  • the plastic material is a thermoplastic elastomer of polyester type.
  • the movement comprises a plate 22 and bridges mounted thereon to form a cage.
  • the plate 22 is made of sapphire for aesthetic purposes, to present a transparent appearance for example. It is, therefore, both very hard and very fragile.
  • the plate 22 could be conventionally made of metal, for example brass. It has a circular shoulder 24 of rectangular section, located on its edge and intended to cooperate with the fixing member 20.
  • the member 20 comprises two lips 26a and 26b and a bottom 28 together forming a groove 30 of substantially rectangular section, in which the shoulder 24 is engaged.
  • the member 20 is made of a plastic material, such as MF13 or Hytrel ®.
  • Hytrel marketed by Dupont, is a rigid polyester, having a Shore D hardness of between 40 and 75.
  • the acetal copolymer MF13 marketed by Bay State Polymer (USA), has, moreover, the advantage of being transparent. .
  • the height of the member 20 is large in front of its width so that it is, considered in isolation, deformable radially. In order to accentuate this characteristic, it could alternatively be provided with vertical slots in its upper portion.
  • the lip 26a is of conical shape, thus defining a flare 32 intended to guide the plate 22 in the groove 30. This radial elasticity and the conical shape facilitate the introduction of the plate 22 inside the groove 30 , thus enabling its commitment.
  • the middle 14 has, on its inner edge, a first circular clearance 34, in which is housed the member 20, whose height is slightly greater than that of the clearance 34, for reasons which will appear later. Its diameter is adjusted to the outer diameter of the member 20, so that practically no radial deformation of the latter is possible inside the clearance 34.
  • the member 20 ensures the axial positioning towards the bottom, and radial of the plate 22 inside the box 10.
  • a second clearance 36 is formed in the inner edge of the middle part 14. It extends immediately above the first clearance 34, substantially over the entire upper half of the caseband 14. Sa radial wall is pierced by a circular groove 38, located substantially at its mid-height.
  • a rigid casing ring 40 which may advantageously be made of brass or any other rigid material, is housed in the recess 36. Its outer diameter corresponds to the diameter of the recess 36, so that it is positioned radially inside the casing. the middle part 14. It has a rectangular section of greater width than the difference of the radii of the recesses 34 and 36, so that it rests partially on the member 20. It is pierced, in its thickness, four threaded holes in each which is engaged a fixing screw 42, whose head is supported on a fastening flange 43, which is applied against the upper axial wall of the groove 38. These screws 42 rigidly lock the casing ring 40 in the axial direction .
  • a substantially vertical pressure is exerted on the upper axial wall of the groove 38 on the fixing screws 42 and is transmitted to the member 20 via the circle 40, through which the pressure is distributed over the entire circumference of the groove. 20.
  • the action of tightening the fixing screws 42 has the effect of increasing this pressure and tightening the member 20 which thus ensures its axial positioning in the direction of the ice, and reinforces the blocking of the member 20 in the clearance 34.
  • the plate 22 is perfectly positioned and firmly held axially and radially inside the box 10.
  • the transmission of the fixing force to the plate 22 is made only through the member 20, which, by deforming locally, absorbs the stresses. No effort is focused locally on platinum 22, and all risk of chipping, micro-cracking or deformation is discarded.
  • the assembly of the movement inside the box 10 is as follows. A first operation is performed outside the box 10, namely the insertion of the shoulder 24 into the groove 30 of the member 20. To do this, the plate 22 is centered on the member 20, and pressure is exerted on its upper surface. The member 20 then deforms elastically radially, thereby allowing the shoulder 24 to be inserted into the groove 30.
  • the plate assembly 22 - member 20 is disposed in the clearance 34.
  • the casing ring 40 is then positioned in the recess 36, bearing on the member 20, and the clamping is performed as described above.
  • a casing ring 40 ensures the tightening of the member 20.
  • a variant of this embodiment consists in using fixing flanges bearing on the member 20, and tightened by screws according to a technique well known to those skilled in the art. In general, any method of clamping the member 20 available to those skilled in the art can be envisaged without departing from the scope of the invention.

Abstract

The watch has a case (10) defining a housing (18) comprising a movement which is equipped with a main plate (22). A fixing unit (20) made of plastic material fixes the plate to the case and is rigidly mounted on the case. The unit has two lips (26a, 26b) and a base (28) forming a groove (30) with a rectangular section, where the lip (26a) has a conical shape defining a bellmouth (32) for guiding the plate in the groove. The plate is maintained in the groove and is positioned in a radial and axial manner. An independent claim is also included for a fixing unit for a watch movement.

Description

L'invention se rapporte au domaine de l'horlogerie. Elle concerne plus particulièrement une montre comportant une boîte définissant un logement, un mouvement disposé dans ce logement et un dispositif de fixation du mouvement dans le logement.The invention relates to the field of watchmaking. It relates more particularly to a watch comprising a box defining a housing, a movement disposed in this housing and a device for fixing the movement in the housing.

Le mouvement de montre, qui comprend une cage formée d'une platine et de ponts montés sur celle-ci, est généralement fixé de manière rigide à la boîte par sa platine. En effet, la pratique a montré qu'une suspension élastique du mouvement à la boîte, comme proposé dans le brevet GB 721 920 (C. J. Juillerat ), pouvait engendrer des accélérations plus importantes que celles mesurées avec un mouvement fixé rigidement.The watch movement, which comprises a cage formed of a plate and bridges mounted thereto, is generally rigidly fixed to the box by its plate. Indeed, practice has shown that an elastic suspension of the movement to the box, as proposed in the patent GB 721 920 (CJ Juillerat ), could generate accelerations greater than those measured with a rigidly fixed motion.

La fixation rigide de la platine à la boîte se fait généralement au moyen de vis, de clés de fixage ou d'un cercle d'emboîtage, venant exercer une pression sur la platine disposée dans un dégagement. Pour des informations plus complètes relatives à la fixation du mouvement dans la boîte, on se référera avantageusement à l'ouvrage intitulé 'Théorie de l'horlogerie' (Fédération des Ecoles Techniques, 1998), ISBN 2-940025-10-X.The rigid attachment of the plate to the box is usually done by means of screws, fixing keys or a casing ring, exerting pressure on the plate disposed in a recess. For more complete information relating to the fixing of the movement in the box, reference will be made to the book entitled 'Theorie de l'horlogerie' (Federation of Technical Schools, 1998), ISBN 2-940025-10-X.

Quel que soit le mode de fixation choisi, la platine subit des contraintes, pouvant être localement très élevées. En cas d'utilisation de vis ou de clés de fixage, ces contraintes apparaissent aux points d'appui sur la platine. Dans le cas où un cercle d'emboîtage est utilisé, les contraintes sont en théorie mieux réparties, mais les imperfections de fabrication inévitables des différentes pièces, génèrent, de la même façon, des contraintes locales.Whatever the method of attachment chosen, the plate undergoes constraints, which can be locally very high. When using screws or fixing wrenches, these stresses appear at the bearing points on the plate. In the case where a casing ring is used, the constraints are in theory better distributed, but inevitable manufacturing imperfections of the different parts, generate, in the same way, local constraints.

Généralement, les platines sont en métal, tel que le laiton. Les contraintes subies par ce type de platines peuvent provoquer une légère déformation locale du métal. Ces déformations peuvent, à leur tour, générer des contraintes au niveau du mouvement, et en perturber le fonctionnement. Ce problème se pose avec un maximum d'acuité dans les montres extra-plates ou de type squelette.Generally, the plates are metal, such as brass. The stresses experienced by this type of plates can cause a slight local deformation of the metal. These deformations can, in turn, generate constraints on the movement, and disrupt the operation. This problem arises with maximum acuity in ultra-thin watches or skeleton type.

Par ailleurs, certaines platines sont réalisées en saphir, à des fins esthétiques essentiellement. On citera, à titre d'exemple, la maison Corum, qui propose un modèle de montre dont la cage, en saphir, est entièrement transparente. Les platines en saphir sont fragiles, et des micro-fissures voire des ébréchures peuvent apparaître aux emplacements où des pièces dures appuient fortement et très localement sur la platine, par exemple aux points de serrage, qu'il soit fait usage de vis ou de clés de fixage. En cas d'utilisation d'un cercle d'emboîtage, une particule ou un copeau s'introduisant entre la platine et le cercle, peut, de la même façon, par transmission inélastique de l'effort, causer de tels défauts. Ces derniers sont d'autant plus dommageables, qu'ils engendrent des amorces de rupture.In addition, certain plates are made of sapphire, primarily for aesthetic purposes. As an example, mention is made of the Corum house, which offers a watch model whose sapphire cage is entirely transparent. The sapphire turntables are fragile, and micro-cracks or chips may appear where hard parts strongly and very locally support the plate, for example at the points of tightening, whether using screws or keys fixing. In case of use of a casing ring, a particle or a chip being introduced between the plate and the circle, can, in the same way, by inelastic transmission of the effort, cause such defects. These last are all the more damaging, that they generate primers of rupture.

La présente invention a pour but de pallier les divers inconvénients liés à la concentration locale de contraintes sur la platine due à la fixation de celle-ci à la boîte, en proposant une structure d'emboîtage permettant d'éviter tout gradient de contraintes sur la platine.The present invention aims to overcome the various disadvantages related to the local concentration of stresses on the plate due to the attachment thereof to the box, by proposing a casing structure to avoid any stress gradient on the platinum.

Plus précisément, l'invention concerne une montre comportant une boîte, qui définit un logement, et un mouvement disposé dans ce logement et muni d'une platine. La montre selon l'invention comprend, en outre, un organe de fixation en matériau plastique, monté rigidement sur la boîte, formant une gorge, la platine étant au moins partiellement enserrée dans la gorge et positionnée radialement et axialement.More specifically, the invention relates to a watch comprising a box, which defines a housing, and a movement arranged in this housing and provided with a plate. The watch according to the invention further comprises a fixing member made of plastic material, rigidly mounted on the box, forming a groove, the plate being at least partially clamped in the groove and positioned radially and axially.

Dans la présente demande, on entend par matériau plastique une matière dont la limite élastique est faible et qui tend à fluer rapidement sous l'effet d'une contrainte, comme c'est le cas des matières plastiques en général, mais également de certains autres matériaux, par exemple métalliques.In the present application, the term plastic material is a material whose elastic limit is low and tends to flow quickly under the effect of a constraint, as is the case of plastics in general, but also some other materials, for example metal.

La montre selon l'invention présente encore les caractéristiques suivantes :

  • L'organe de fixation présente une portion annulaire et deux lèvres disposées de part et d'autre de la portion annulaire et s'étendant radialement vers le centre, qui forment ensemble ladite gorge et l'une des lèvres présente un cône formant un évasement destiné à faciliter l'engagement de la platine dans la gorge.
  • La montre comporte, en outre, des moyens de serrage de l'organe de fixation, et la boîte est munie d'un dégagement dans lequel est logé l'organe de fixation, le dégagement et les moyens de serrage assurant ensemble son positionnement radial et axial.
  • Les moyens de serrage comportent un cercle d'emboîtage reposant au moins partiellement sur l'organe de fixation, et muni de brides de fixation.
  • Le matériau plastique est un élastomère qui présente une dureté Shore comprise entre 40 et 75.
The watch according to the invention also has the following characteristics:
  • The fixing member has an annular portion and two lips disposed on either side of the annular portion and extending radially towards the center, which together form said groove and one lip has a cone forming a flare to facilitate the engagement of the plate in the groove.
  • The watch further comprises clamping means of the fastener, and the box is provided with a recess in which is housed the fixing member, the clearance and the clamping means together ensuring its radial positioning and axial.
  • The clamping means comprise a casing ring resting at least partially on the fastener, and provided with fixing flanges.
  • The plastic material is an elastomer having a Shore hardness of between 40 and 75.

L'invention concerne également un organe de fixation d'une platine à une boîte présentant une portion annulaire et deux lèvres disposées de part et d'autre de la portion annulaire et s'étendant radialement vers le centre, qui forment ensemble une gorge. L'une des lèvres présente un cône formant un évasement destiné à faciliter l'engagement de la platine dans la gorge, et l'organe de fixation est formé d'un matériau plastique dont la dureté Shore est comprise entre 40 et 75.The invention also relates to a fixing member of a plate to a box having an annular portion and two lips disposed on either side of the annular portion and extending radially towards the center, which together form a groove. One of the lips has a cone forming a flare to facilitate the engagement of the plate in the groove, and the fastener is formed of a plastic material whose Shore hardness is between 40 and 75.

Avantageusement, le matériau plastique est un élastomère thermoplastique de type polyester.Advantageously, the plastic material is a thermoplastic elastomer of polyester type.

D'autres caractéristiques de l'invention ressortiront de la description qui suit, faite en regard du dessin annexé, dans lequel la figure unique représente une vue en coupe d'une montre selon l'invention.Other features of the invention will emerge from the description which follows, given with reference to the appended drawing, in which the single figure shows a sectional view of a watch according to the invention.

La montre représentée au dessin comporte :

  • ■ une boîte 10 formée d'une lunette 12, d'une carrure 14 et d'un fond 16 agencés ensemble pour former un logement 18,
  • ■ un mouvement disposé dans le logement 18, et
  • ■ Un organe de fixation 20 annulaire assurant le positionnement et la fixation du mouvement dans la boîte 10.
The watch shown in the drawing comprises:
  • ■ a box 10 formed of a bezel 12, a middle part 14 and a bottom 16 arranged together to form a housing 18,
  • A movement disposed in the housing 18, and
  • ■ An annular fixing member 20 for positioning and fixing the movement in the box 10.

Le mouvement comporte une platine 22 et des ponts montés sur celle-ci pour former une cage. La platine 22 est réalisée en saphir à des fins esthétiques, pour présenter un aspect transparent par exemple. Elle est, de ce fait, à la fois très dure et très fragile. Dans un autre mode de réalisation, la platine 22 pourrait être classiquement en métal, par exemple en laiton. Elle présente un épaulement circulaire 24 à section rectangulaire, situé sur sa tranche et destiné à coopérer avec l'organe de fixation 20.The movement comprises a plate 22 and bridges mounted thereon to form a cage. The plate 22 is made of sapphire for aesthetic purposes, to present a transparent appearance for example. It is, therefore, both very hard and very fragile. In another embodiment, the plate 22 could be conventionally made of metal, for example brass. It has a circular shoulder 24 of rectangular section, located on its edge and intended to cooperate with the fixing member 20.

L'organe 20 comporte deux lèvres 26a et 26b et un fond 28 formant ensemble une gorge 30 à section sensiblement rectangulaire, dans laquelle est engagé l'épaulement 24.The member 20 comprises two lips 26a and 26b and a bottom 28 together forming a groove 30 of substantially rectangular section, in which the shoulder 24 is engaged.

Afin d'absorber les contraintes locales, l'organe 20 est réalisé en un matériau plastique, tel que du MF13 ou de l'Hytrel ®. L'Hytrel, commercialisé par Dupont, est un polyester rigide, présentant une dureté Shore D comprise entre 40 et 75. Le copolymère acétal MF13, commercialisé par Bay State Polymer (USA), présente, en outre, l'avantage d'être transparent. Les propriétés plastiques de l'organe 20, conférées par sa dureté Shore, lui permettent d'absorber les contraintes, en se déformant localement.In order to absorb the local stresses, the member 20 is made of a plastic material, such as MF13 or Hytrel ®. Hytrel, marketed by Dupont, is a rigid polyester, having a Shore D hardness of between 40 and 75. The acetal copolymer MF13, marketed by Bay State Polymer (USA), has, moreover, the advantage of being transparent. . The plastic properties of the member 20, conferred by its Shore hardness, allow it to absorb the stresses, by deforming locally.

La hauteur de l'organe 20 est grande devant sa largeur de sorte qu'il est, considéré isolément, déformable radialement. Afin d'accentuer cette caractéristique, il pourrait, en variante, être muni de fentes verticales dans sa portion supérieure. En outre, la lèvre 26a est de forme conique, définissant ainsi un évasement 32 destiné à guider la platine 22 dans la gorge 30. Cette élasticité radiale et la forme conique facilitent l'introduction de la platine 22 à l'intérieur de la gorge 30, permettant ainsi son engagement.The height of the member 20 is large in front of its width so that it is, considered in isolation, deformable radially. In order to accentuate this characteristic, it could alternatively be provided with vertical slots in its upper portion. In addition, the lip 26a is of conical shape, thus defining a flare 32 intended to guide the plate 22 in the groove 30. This radial elasticity and the conical shape facilitate the introduction of the plate 22 inside the groove 30 , thus enabling its commitment.

La carrure 14 présente, sur sa tranche intérieure, un premier dégagement circulaire 34, dans lequel est logé l'organe 20, dont la hauteur est légèrement supérieure à celle du dégagement 34, pour des raisons qui apparaîtront ultérieurement. Son diamètre est ajusté au diamètre extérieur de l'organe 20, de sorte que pratiquement aucune déformation radiale de ce dernier n'est possible à l'intérieur du dégagement 34. Ainsi disposé dans le dégagement 34, l'organe 20 assure le positionnement axial en direction du fond, et radial de la platine 22 à l'intérieur de la boîte 10.The middle 14 has, on its inner edge, a first circular clearance 34, in which is housed the member 20, whose height is slightly greater than that of the clearance 34, for reasons which will appear later. Its diameter is adjusted to the outer diameter of the member 20, so that practically no radial deformation of the latter is possible inside the clearance 34. Thus disposed in the clearance 34, the member 20 ensures the axial positioning towards the bottom, and radial of the plate 22 inside the box 10.

Un deuxième dégagement 36, de diamètre supérieur à celui du dégagement 34, est pratiqué dans la tranche intérieure de la carrure 14. II s'étend immédiatement au-dessus du premier dégagement 34, sensiblement sur toute la moitié supérieure de la carrure 14. Sa paroi radiale est percée d'une gorge circulaire 38, située sensiblement à sa mi-hauteur.A second clearance 36, of greater diameter than that of the clearance 34, is formed in the inner edge of the middle part 14. It extends immediately above the first clearance 34, substantially over the entire upper half of the caseband 14. Sa radial wall is pierced by a circular groove 38, located substantially at its mid-height.

Un cercle d'emboîtage 40 rigide, qui peut avantageusement être en laiton ou tout autre matériau rigide, est logé dans le dégagement 36. Son diamètre extérieur correspond au diamètre du dégagement 36, de sorte qu'il est positionné radialement à l'intérieur de la carrure 14. Il présente une section rectangulaire de largeur supérieure à la différence des rayons des dégagements 34 et 36, de sorte qu'il repose partiellement sur l'organe 20. Il est percé, dans son épaisseur, de quatre trous taraudés dans chacun desquels est engagée une vis de fixage 42, dont la tête est en appui sur une bride de fixation 43, laquelle est appliquée contre la paroi axiale supérieure de la gorge 38. Ces vis 42 bloquent rigidement le cercle d'emboîtage 40 dans le sens axial.A rigid casing ring 40, which may advantageously be made of brass or any other rigid material, is housed in the recess 36. Its outer diameter corresponds to the diameter of the recess 36, so that it is positioned radially inside the casing. the middle part 14. It has a rectangular section of greater width than the difference of the radii of the recesses 34 and 36, so that it rests partially on the member 20. It is pierced, in its thickness, four threaded holes in each which is engaged a fixing screw 42, whose head is supported on a fastening flange 43, which is applied against the upper axial wall of the groove 38. These screws 42 rigidly lock the casing ring 40 in the axial direction .

Une pression sensiblement verticale s'exerce de la paroi axiale supérieure de la gorge 38 sur les vis de fixage 42 et se transmet à l'organe 20 par l'intermédiaire du cercle 40, grâce auquel la pression est répartie sur toute la circonférence de l'organe 20. L'action de serrer les vis de fixage 42 a pour effet l'augmentation de cette pression et le serrage de l'organe 20 qui garantit ainsi son positionnement axial en direction de la glace, et renforce le blocage de l'organe 20 dans le dégagement 34. Ainsi, la platine 22 est parfaitement positionnée et fermement maintenue axialement et radialement à l'intérieur de la boîte 10.A substantially vertical pressure is exerted on the upper axial wall of the groove 38 on the fixing screws 42 and is transmitted to the member 20 via the circle 40, through which the pressure is distributed over the entire circumference of the groove. 20. The action of tightening the fixing screws 42 has the effect of increasing this pressure and tightening the member 20 which thus ensures its axial positioning in the direction of the ice, and reinforces the blocking of the member 20 in the clearance 34. Thus, the plate 22 is perfectly positioned and firmly held axially and radially inside the box 10.

La transmission de l'effort de fixation à la platine 22 se fait uniquement par l'intermédiaire de l'organe 20, qui, en se déformant localement, absorbe les contraintes. Aucun effort ne se concentre localement sur la platine 22, et tout risque d'ébréchure, de micro-fissure ou de déformation est écarté.The transmission of the fixing force to the plate 22 is made only through the member 20, which, by deforming locally, absorbs the stresses. No effort is focused locally on platinum 22, and all risk of chipping, micro-cracking or deformation is discarded.

Le montage du mouvement à l'intérieur de la boîte 10 se fait de la manière suivante. Une première opération est exécutée à l'extérieur de la boîte 10, à savoir l'insertion de l'épaulement 24 dans la gorge 30 de l'organe 20. Pour ce faire, la platine 22 est centrée sur l'organe 20, et une pression est exercée à sa surface supérieure. L'organe 20 se déforme alors élastiquement radialement, permettant ainsi l'introduction de l'épaulement 24 dans la gorge 30.The assembly of the movement inside the box 10 is as follows. A first operation is performed outside the box 10, namely the insertion of the shoulder 24 into the groove 30 of the member 20. To do this, the plate 22 is centered on the member 20, and pressure is exerted on its upper surface. The member 20 then deforms elastically radially, thereby allowing the shoulder 24 to be inserted into the groove 30.

Puis, l'ensemble platine 22 - organe 20 est disposé dans le dégagement 34. Le cercle d'emboîtage 40 est ensuite positionné dans le dégagement 36, en appui sur l'organe 20, et le serrage est effectué selon la description faite précédemment.Then, the plate assembly 22 - member 20 is disposed in the clearance 34. The casing ring 40 is then positioned in the recess 36, bearing on the member 20, and the clamping is performed as described above.

Dans le mode de réalisation présenté, un cercle d'emboîtage 40 assure le serrage de l'organe 20. Une variante de ce mode de réalisation consiste à utiliser des brides de fixation venant en appui sur l'organe 20, et serrées par des vis, selon une technique bien connue de l'homme de métier. D'une manière générale, tout mode de serrage de l'organe 20 à disposition de l'homme de métier peut être envisagé sans sortir du cadre de l'invention.In the embodiment shown, a casing ring 40 ensures the tightening of the member 20. A variant of this embodiment consists in using fixing flanges bearing on the member 20, and tightened by screws according to a technique well known to those skilled in the art. In general, any method of clamping the member 20 available to those skilled in the art can be envisaged without departing from the scope of the invention.

Claims (8)

Montre comportant une boîte (10), qui définit un logement (18), et un mouvement disposé dans ledit logement et muni d'une platine (22), caractérisée en ce qu'elle comprend, en outre, un organe de fixation en matériau plastique (20), monté rigidement sur la boîte, formant une gorge (30), ladite platine (22) étant au moins partiellement enserrée dans ladite gorge (30) et positionnée radialement et axialement.Watch comprising a box (10), which defines a housing (18), and a movement disposed in said housing and provided with a plate (22), characterized in that it further comprises a fastener made of material plastic (20), rigidly mounted on the box, forming a groove (30), said plate (22) being at least partially enclosed in said groove (30) and positioned radially and axially. Montre selon la revendication 1, caractérisée en ce que ledit organe de fixation (20) présente une portion annulaire et deux lèvres (26a, 26b) disposées de part et d'autre de la portion annulaire et s'étendant radialement vers le centre, qui forment ensemble ladite gorge (30), et en ce que l'une desdites lèvres (26a) présente un cône formant un évasement destiné à faciliter l'engagement de ladite platine (22) dans la gorge (30).Watch according to claim 1, characterized in that said fixing member (20) has an annular portion and two lips (26a, 26b) disposed on either side of the annular portion and extending radially towards the center, which together form said groove (30), and in that one of said lips (26a) has a cone forming a flare to facilitate the engagement of said plate (22) in the groove (30). Montre selon l'une des revendications 1 et 2, caractérisée en ce qu'elle comporte, en outre, des moyens de serrage (40, 42) dudit organe de fixation (20), et en ce que ladite boîte (10) est munie d'un dégagement (34) dans lequel est logé ledit organe de fixation (20), ledit dégagement (34) et lesdits moyens de serrage (40, 42) assurant ensemble son positionnement radial et axial.Watch according to one of claims 1 and 2, characterized in that it further comprises clamping means (40, 42) of said fastener (20), and in that said box (10) is provided a clearance (34) in which is housed said fixing member (20), said clearance (34) and said clamping means (40, 42) together ensuring its radial and axial positioning. Montre selon la revendication 3, caractérisée en ce que lesdits moyens de serrage comportent un cercle d'emboîtage (40) reposant au moins partiellement sur ledit organe de fixation (20), et muni de brides de fixation (43).Watch according to claim 3, characterized in that said clamping means comprise a casing ring (40) resting at least partially on said fixing member (20), and provided with fixing flanges (43). Montre selon l'une des revendications 1 à 4, caractérisée en ce que ledit matériau plastique présente une valeur de dureté Shore comprise entre 40 et 75.Watch according to one of claims 1 to 4, characterized in that said plastic material has a Shore hardness value of between 40 and 75. Montre selon la revendication 5, caractérisée en ce que ledit matériau plastique est un élastomère thermoplastique de type polyester.Watch according to claim 5, characterized in that said plastic material is a thermoplastic elastomer of polyester type. Organe de fixation d'un mouvement d'horlogerie dans une boîte de montre, caractérisé en ce qu'il présente une portion annulaire et deux lèvres (26a, 26b) disposées de part et d'autre de la portion annulaire et s'étendant radialement vers le centre, qui forment ensemble une gorge (30), en ce que l'une desdites lèvres (26a) présente un cône formant un évasement destiné à faciliter l'engagement de ladite platine (22) dans ladite gorge (30), et en ce qu'il est constitué en un matériau plastique dont la dureté Shore est comprise entre 40 et 75.Fastening member of a clockwork movement in a box watch, characterized in that it comprises an annular portion and two lips (26a, 26b) disposed on either side of the annular portion and extending radially towards the center, which together form a groove (30), in that one of said lips (26a) has a cone forming a flare to facilitate engagement of said platen (22) in said groove (30), and that it is made of a plastic material whose hardness Shore is between 40 and 75. Organe de fixation d'une platine (22) selon la revendication 7, caractérisé en ce que ledit matériau plastique est un élastomère thermoplastique de type polyester.A platen fixing member (22) according to claim 7, characterized in that said plastic material is a polyester-type thermoplastic elastomer.
EP05106235A 2005-07-08 2005-07-08 Timepiece and device for fixing a movement in the timepiece case Withdrawn EP1742119A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05106235A EP1742119A1 (en) 2005-07-08 2005-07-08 Timepiece and device for fixing a movement in the timepiece case
PCT/EP2006/064012 WO2007006750A2 (en) 2005-07-08 2006-07-07 Watch and member for fixing a movement in a watch case

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05106235A EP1742119A1 (en) 2005-07-08 2005-07-08 Timepiece and device for fixing a movement in the timepiece case

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EP1742119A1 true EP1742119A1 (en) 2007-01-10

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB721920A (en) 1952-07-17 1955-01-12 Charles Jules Juillerat Waterproof shock-absorbing watch case
CH504035A (en) * 1968-08-21 1970-11-13 Clinton Watch Co Device for elastic suspension of a watch movement
US4184317A (en) * 1976-12-27 1980-01-22 Citizen Watch Co., Ltd. Watch movement mounting structure
JPS56141576A (en) * 1980-04-08 1981-11-05 Citizen Watch Co Ltd Structure of electronic wristwatch
US4548514A (en) * 1983-03-05 1985-10-22 Gebruder Junghans Gmbh Wristwatch having tubular seal and method for assembly
EP0279186A2 (en) * 1987-02-11 1988-08-24 Erich Lacher Uhrenfabrik GmbH & Co.KG Wrist watch
US20020167867A1 (en) * 2001-04-24 2002-11-14 Tokiko Ito Electronic timepiece

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB721920A (en) 1952-07-17 1955-01-12 Charles Jules Juillerat Waterproof shock-absorbing watch case
CH504035A (en) * 1968-08-21 1970-11-13 Clinton Watch Co Device for elastic suspension of a watch movement
US4184317A (en) * 1976-12-27 1980-01-22 Citizen Watch Co., Ltd. Watch movement mounting structure
JPS56141576A (en) * 1980-04-08 1981-11-05 Citizen Watch Co Ltd Structure of electronic wristwatch
US4548514A (en) * 1983-03-05 1985-10-22 Gebruder Junghans Gmbh Wristwatch having tubular seal and method for assembly
EP0279186A2 (en) * 1987-02-11 1988-08-24 Erich Lacher Uhrenfabrik GmbH & Co.KG Wrist watch
US20020167867A1 (en) * 2001-04-24 2002-11-14 Tokiko Ito Electronic timepiece

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"FÉDÉRATION DES ECOLES TECHNIQUES", 1998, article "Théorie de l'horlogerie"
PATENT ABSTRACTS OF JAPAN vol. 006, no. 018 (P - 100) 2 February 1982 (1982-02-02) *

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