EP2690509B1 - Dial attachment to a timepiece plate - Google Patents

Dial attachment to a timepiece plate Download PDF

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Publication number
EP2690509B1
EP2690509B1 EP20120178027 EP12178027A EP2690509B1 EP 2690509 B1 EP2690509 B1 EP 2690509B1 EP 20120178027 EP20120178027 EP 20120178027 EP 12178027 A EP12178027 A EP 12178027A EP 2690509 B1 EP2690509 B1 EP 2690509B1
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EP
European Patent Office
Prior art keywords
dial
bottom plate
radial
holding means
plate
Prior art date
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Application number
EP20120178027
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German (de)
French (fr)
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EP2690509A1 (en
Inventor
Stéphane Leoni
Thierry Altenhoven
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ETA SA Manufacture Horlogere Suisse
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ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP20120178027 priority Critical patent/EP2690509B1/en
Priority to US13/946,382 priority patent/US8817580B2/en
Priority to CN201320452242.5U priority patent/CN203551956U/en
Priority to JP2013155240A priority patent/JP5646014B2/en
Priority to CN201310320163.3A priority patent/CN103576531B/en
Publication of EP2690509A1 publication Critical patent/EP2690509A1/en
Application granted granted Critical
Publication of EP2690509B1 publication Critical patent/EP2690509B1/en
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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
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/14—Fastening the dials to the clock or watch plates

Definitions

  • the invention relates to a watch assembly comprising at least one plate and at least one dial arranged to be fixed on one another, comprising a plurality of centering pins integral with said plate, respectively said dial, each arranged to cooperate with radial and tangential clearance with an oblong groove of said dial, respectively of said plate, for the relative positioning of said at least one dial with respect to said at least one plate, said assembly further comprising holding means secured to said plate, respectively said dial , arranged to cooperate with complementary holding means integral with said dial, respectively of said plate, said holding means orlet complementary holding means comprising elastic return means for pressing said at least one dial bearing on said at least one plate, where said elastic return means have a substantially tangential mobility a plane perpendicular to the plane of said platen and a radial joining the center of said platen to said elastic return means.
  • the invention also relates to a timepiece comprising at least one such watch ensemble.
  • the invention relates to the field of watchmaking, and more particularly to the field of assembly of dials on the watch plates.
  • a platinum and a watch face are made of different materials, they are subjected to differential expansions, due to the different expansion coefficients of their materials.
  • a dial attached to a platen and of a thickness generally much less than that of this platen, can bend or retract with temperature variations. In certain critical cases, especially at high temperatures, for example in tropical or desert, such deformation may cause the needles to be dislodged, rendering the watch unfit for use.
  • the document CH 120 846 A describes the fixing of a dial on a plate using circlips cooperating with pawns.
  • the document US 543 628 A, MARSH describes a similar device.
  • the document CH 82 809 A discloses a dial fixing device feet by pinching of these feet, housed in an impression of a slot of a stamped plate, by the angular folding of radial fingers that includes this plate.
  • the invention proposes to guarantee the behavior of the dial, and its geometry (in general its flatness) despite the different expansions of the components.
  • the invention relates to a watch assembly comprising at least one plate and at least one dial arranged to be fixed on one another, comprising a plurality of centering pins integral with said plate, respectively said dial, each arranged to cooperate with radial and tangential clearance with an oblong groove of said dial, respectively said platen, for the relative positioning of said at least one dial relative to said at least one plate, said assembly further comprising holding means integral with said platen , respectively said dial, arranged to cooperate with complementary holding means integral with said dial, respectively of said plate, said holding means or / and complementary holding means comprising elastic return means for pressing said at least one dial bearing on said at least one plate, wherein said elastic return means have a mobility substantially ta ngentielle in a plane perpendicular to the plane of said plate and a radial joining the center of said plate to said elastic return means, characterized in that said holding means or / and complementary holding means carrying said resilient return means comprise at least one resilient clip tab protruding cantilevered relative to said
  • the invention also relates to a timepiece comprising at least one such watch ensemble.
  • the invention relates to the field of watchmaking, and more particularly to the field of assembly of dials on the watch plates.
  • This assembly 100 also comprises holding means 5, which are integral with the plate 1, respectively of the dial 2, and which are arranged to cooperate with complementary holding means 6. These means 6 are integral with the dial 2, respectively of the platinum 1.
  • the holding means 5 and / or complementary holding means 6 comprise elastic return means 7 for pressing the at least one dial 2 to bear on the at least one plate 1.
  • the elastic return means 7 have a substantially tangential mobility along a plane PT, which is perpendicular both to the plane P of the plate 2 and to a radial R which joins the center O of the plate 2 to the elastic return means 7.
  • This tangential mobility makes it possible not to prevent the deformations due to the thermal stresses of the dial 2, respectively of the plate 1.
  • the invention is illustrated more particularly for the case where the pins 3 and the holding means 5 are integral with the plate 1.
  • the pins 3 and the holding means 5 are integral with the plate 1.
  • the oblong grooves 4 are oriented substantially radially with respect to an axis D placed substantially at the center O of the plate 1 and perpendicular to the plane P of the plate 1.
  • the dial 2 can expand or contract radially on the platinum 1, while still being oriented by the pins 3 in the oblong grooves 4, and being held axially by the holding means 5, advantageously constituted by clips.
  • pins 3 are used for the orientation.
  • one of these pins 3 is used for centering in position, and the others are constructed with a wider outline with their respective grooves 4, to provide guiding.
  • a first tangential clearance JT1 between this first said centering pin 3 and a corresponding first oblong groove 4 is less than the tangential clearance JT between each of the other centering pins. 3 and the oblong groove 4 corresponding to them.
  • the groove 4 of the first centering pin may also be reduced to a simple bore, in which case this first pin 3 serves as a pivot to the dial 2 relative to the plate 1.
  • At least one said oblong groove 4 is open and open, and preferably all the oblong grooves 4 are open and open, so as to allow deformation of the dial during thermal expansion.
  • the radial clearance JR1 between this first centering pin 3 and its corresponding first oblong groove 4, is greater than or equal to the maximum radial thermal clearance between the plate 1 and the dial 2.
  • the holding means 5 are made in the form of clipping lugs or clips.
  • these holding means 5 and / or complementary holding means 6 carrying the elastic return means 7 comprise at least one elastic clipping tab 8, protruding cantilevered with respect to the dial 2, or respectively to the plate 1, in a direction substantially perpendicular to the plane of the dial 2 or respectively of the plate 1.
  • the tab 8 comprises a head 9 with a stop surface 11 in return, which stop surface 11 is arranged to cooperate in abutment with a complementary stop surface 12 which comprises the plate 1, or respectively the dial 2.
  • each tab 8 is movable in a notch 13 substantially radial with respect to the plate 1 or respectively to the dial 2, with a radial clearance at least equal to the maximum thermal clearance between the plate 1 and the dial 2.
  • At least one said radial notch 13 is open and open.
  • the dial 2 is rough cutting.
  • the invention also relates to a timepiece 1000 comprising at least one such watch assembly 100.
  • the invention makes it possible to guarantee the good behavior of the dial on the plate regardless of the service temperature of the watch.
  • the differential expansion of the dial and platinum is no longer critical.
  • the mode of holding the dial on the turntable allows any reversal of the assembly pre-assembled during the manufacturing phases of the watch, thanks to the good support provided by the elastic holding tabs.
  • the assembly time is low, thanks to the absence of screws, glue, or similar.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)

Description

Domaine de l'inventionField of the invention

L'invention concerne un ensemble horloger comportant au moins une platine et au moins un cadran agencés pour être fixés l'un sur l'autre, comportant une pluralité de pions de centrage solidaires de ladite platine, respectivement dudit cadran, chacun agencé pour coopérer avec jeu radial et tangentiel avec une rainure oblongue dudit cadran, respectivement de ladite platine, pour le positionnement relatif dudit au moins un cadran par rapport à ladite au moins une platine, ledit ensemble comportant encore des moyens de maintien solidaires de ladite platine, respectivement dudit cadran, agencés pour coopérer avec des moyens de maintien complémentaire solidaires dudit cadran, respectivement de ladite platine, lesdits moyens de maintien oulet moyens de maintien complémentaire comportant des moyens de rappel élastique pour plaquer ledit au moins un cadran en appui sur ladite au moins une platine, où lesdits moyens de rappel élastique ont une mobilité sensiblement tangentielle selon un plan perpendiculaire au plan de ladite platine et à une radiale joignant le centre de ladite platine auxdits moyens de rappel élastique.The invention relates to a watch assembly comprising at least one plate and at least one dial arranged to be fixed on one another, comprising a plurality of centering pins integral with said plate, respectively said dial, each arranged to cooperate with radial and tangential clearance with an oblong groove of said dial, respectively of said plate, for the relative positioning of said at least one dial with respect to said at least one plate, said assembly further comprising holding means secured to said plate, respectively said dial , arranged to cooperate with complementary holding means integral with said dial, respectively of said plate, said holding means orlet complementary holding means comprising elastic return means for pressing said at least one dial bearing on said at least one plate, where said elastic return means have a substantially tangential mobility a plane perpendicular to the plane of said platen and a radial joining the center of said platen to said elastic return means.

L'invention concerne encore une pièce d'horlogerie comportant au moins un tel ensemble horloger.The invention also relates to a timepiece comprising at least one such watch ensemble.

L'invention concerne le domaine de l'horlogerie, et plus particulièrement le domaine de l'assemblage des cadrans sur les platines de montres.The invention relates to the field of watchmaking, and more particularly to the field of assembly of dials on the watch plates.

Arrière-plan de l'inventionBackground of the invention

Quand une platine et un cadran de montre sont réalisés dans des matériaux différents, ils sont soumis à des dilatations différentielles, en raison des coefficients de dilatation différents de leurs matériaux. De ce fait, un cadran fixé à une platine, et d'épaisseur en général très inférieure à celle de cette platine, peut se bomber ou se rétracter avec les variations de température. Dans certains cas critiques, notamment à des températures élevées, par exemple en zones tropicales ou désertiques, une telle déformation peut entraîner le déchassage des aiguilles, ce qui rend la montre inapte à l'utilisation.When a platinum and a watch face are made of different materials, they are subjected to differential expansions, due to the different expansion coefficients of their materials. As a result, a dial attached to a platen, and of a thickness generally much less than that of this platen, can bend or retract with temperature variations. In certain critical cases, especially at high temperatures, for example in tropical or desert, such deformation may cause the needles to be dislodged, rendering the watch unfit for use.

Le document CH 120 846 A , BOVET FRERES, décrit la fixation d'un cadran sur une platine à l'aide de circlips coopérant avec des pions. Le document US 543 628 A, MARSH , décrit un dispositif analogue.The document CH 120 846 A , BOVET FRERES, describes the fixing of a dial on a plate using circlips cooperating with pawns. The document US 543 628 A, MARSH , describes a similar device.

Le document CH 82 809 A, WILLIAMSON , décrit un dispositif de fixation de cadran à pieds par pincement de ces pieds, logés dans une empreinte d'une fente d'une platine étampée, par le pliage angulaire de doigts radiaux que comporte cette platine.The document CH 82 809 A, WILLIAMSON , discloses a dial fixing device feet by pinching of these feet, housed in an impression of a slot of a stamped plate, by the angular folding of radial fingers that includes this plate.

Le document CH 125 760 A, GAERTNER , décrit une fixation de cadran à pieds par le maintien élastique de ces pieds par des brides à ressort maintenues par vis.The document CH 125760A, GAERTNER , describes a dial fixing feet by the elastic holding of these feet by spring clamps held by screws.

Résumé de l'inventionSummary of the invention

L'invention se propose de garantir la tenue du cadran, et sa géométrie (en général sa planéité) malgré les dilatations différentes des composants.The invention proposes to guarantee the behavior of the dial, and its geometry (in general its flatness) despite the different expansions of the components.

Elle se propose aussi de procurer une fixation simple du cadran sur la platine, sans usinage préalable du cadran, en particulier à sa périphérie.It also proposes to provide a simple fixation of the dial on the plate, without prior machining of the dial, particularly at its periphery.

A cet effet, l'invention concerne un ensemble horloger comportant au moins une platine et au moins un cadran agencés pour être fixés l'un sur l'autre, comportant une pluralité de pions de centrage solidaires de ladite platine, respectivement dudit cadran, chacun agencé pour coopérer avec jeu radial et tangentiel avec une rainure oblongue dudit cadran, respectivement de ladite platine, pour le positionnement relatif dudit au moins un cadran par rapport à ladite au moins une platine, ledit ensemble comportant encore des moyens de maintien solidaires de ladite platine, respectivement dudit cadran, agencés pour coopérer avec des moyens de maintien complémentaire solidaires dudit cadran, respectivement de ladite platine, lesdits moyens de maintien ou/et moyens de maintien complémentaire comportant des moyens de rappel élastique pour plaquer ledit au moins un cadran en appui sur ladite au moins une platine, où lesdits moyens de rappel élastique ont une mobilité sensiblement tangentielle selon un plan perpendiculaire au plan de ladite platine et à une radiale joignant le centre de ladite platine auxdits moyens de rappel élastique, caractérisé en ce que lesdits moyens de maintien ou/et moyens de maintien complémentaire porteurs desdits moyens de rappel élastique comportent au moins une patte élastique de clipage, saillante en porte-à-faux par rapport audit cadran ou respectivement à ladite platine selon une direction sensiblement perpendiculaire au plan dudit cadran ou de ladite platine, ladite patte comportant une tête avec une surface d'arrêt en retour laquelle surface d'arrêt est agencée pour coopérer en appui avec une surface complémentaire d'arrêt que comporte ladite platine ou respectivement ledit cadran.For this purpose, the invention relates to a watch assembly comprising at least one plate and at least one dial arranged to be fixed on one another, comprising a plurality of centering pins integral with said plate, respectively said dial, each arranged to cooperate with radial and tangential clearance with an oblong groove of said dial, respectively said platen, for the relative positioning of said at least one dial relative to said at least one plate, said assembly further comprising holding means integral with said platen , respectively said dial, arranged to cooperate with complementary holding means integral with said dial, respectively of said plate, said holding means or / and complementary holding means comprising elastic return means for pressing said at least one dial bearing on said at least one plate, wherein said elastic return means have a mobility substantially ta ngentielle in a plane perpendicular to the plane of said plate and a radial joining the center of said plate to said elastic return means, characterized in that said holding means or / and complementary holding means carrying said resilient return means comprise at least one resilient clip tab protruding cantilevered relative to said dial or said plate respectively in a direction substantially perpendicular to the plane of said dial or said platen, said tab comprising a head with a return stop surface which stop surface is arranged to cooperate in abutment with a complementary stop surface that includes said platen or said dial respectively.

L'invention concerne encore une pièce d'horlogerie comportant au moins un tel ensemble horloger.The invention also relates to a timepiece comprising at least one such watch ensemble.

Description sommaire des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, en référence aux dessins annexés, où :

  • la figure 1 représente, de façon schématisée et en vue en plan, un ensemble horloger selon l'invention, avec une platine surmontée d'un cadran, lequel est centré par des pions de centrage et est maintenu plaqué sur la platine par des moyens de rappel élastique à débattement tangentiel ;
  • la figure 2 représente, de façon schématisée et en perspective, l'ensemble de la figure 1 ;
  • la figure 3 représente, de façon schématisée et en perspective, un détail d'un moyen de rappel élastique de plaquage de cet ensemble, selon la référence E de la figure 2 ;
  • la figure 4 représente, de façon schématisée et en vue en plan, un détail de positionnement d'un pion de centrage dans une rainure oblongue, selon la référence A de la figure 1 ;
  • la figure 5 représente, de façon schématisée et en vue en coupe dans un plan perpendiculaire au plan de la platine, un détail de positionnement d'un pion de centrage dans une rainure oblongue, selon la référence BB de la figure 1 ;
  • la figure 6 représente, de façon schématisée et en vue en plan, un détail de la coopération d'un moyen de rappel élastique de plaquage de cet ensemble, positionnée dans une rainure radiale, avec une face d'appui du cadran, selon la référence C de la figure 1 ;
  • la figure 7 représente, de façon schématisée et en vue en coupe dans un plan tangentiel à la platine, un détail de la coopération d'un moyen de rappel élastique de plaquage de cet ensemble, positionnée dans une rainure radiale, avec une face d'appui du cadran, selon la référence DD de la figure 1 ;
  • la figure 8 représente, sous forme d'un schéma-blocs, une pièce d'horlogerie comportant un tel ensemble horloger selon l'invention.
Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which:
  • the figure 1 represents schematically and in plan view, a watch assembly according to the invention, with a platinum surmounted by a dial, which is centered by centering pins and is kept pressed onto the plate by elastic return means to tangential deflection;
  • the figure 2 represents, schematically and in perspective, the whole of the figure 1 ;
  • the figure 3 represents, schematically and in perspective, a detail of an elastic return means of plating of this assembly, according to the reference E of the figure 2 ;
  • the figure 4 represents schematically and in plan view, a positioning detail of a centering pin in an oblong groove, according to the reference A of the figure 1 ;
  • the figure 5 represents, schematically and in sectional view in a plane perpendicular to the plane of the plate, a positioning detail of a centering pin in an oblong groove, according to the reference BB of FIG. figure 1 ;
  • the figure 6 represents schematically and in plan view, a detail of the cooperation of an elastic return means of plating of this assembly, positioned in a radial groove, with a bearing face of the dial, according to the reference C of the figure 1 ;
  • the figure 7 represents, in a schematic manner and in sectional view in a plane tangential to the plate, a detail of the cooperation of an elastic plating restoring means of this assembly, positioned in a radial groove, with a bearing face of the dial , according to the reference DD of the figure 1 ;
  • the figure 8 represents, in the form of a block diagram, a timepiece comprising such a watch assembly according to the invention.

Description détaillée des modes de réalisation préférésDetailed Description of the Preferred Embodiments

L'invention concerne le domaine de l'horlogerie, et plus particulièrement le domaine de l'assemblage des cadrans sur les platines de montres.The invention relates to the field of watchmaking, and more particularly to the field of assembly of dials on the watch plates.

L'invention concerne plus particulièrement un ensemble horloger 100, qui comporte :

  • au moins une platine 1 ;
  • et au moins un cadran 2 agencés pour être fixés l'un sur l'autre;
  • une pluralité de pions de centrage 3 solidaires de la platine 1, respectivement du cadran 2, chacun agencé pour coopérer avec jeu radial et tangentiel avec une rainure oblongue 4 du cadran 2, respectivement de la platine 1, pour le positionnement relatif du au moins un cadran 2 par rapport à la au moins une platine 1.
The invention more particularly relates to a watch assembly 100, which comprises:
  • at least one plate 1;
  • and at least one dial 2 arranged to be fixed to one another;
  • a plurality of centering pins 3 secured to the plate 1, respectively of the dial 2, each arranged to cooperate with radial clearance and tangential with an oblong groove 4 of the dial 2, respectively of the plate 1, for the relative positioning of the at least one dial 2 with respect to the at least one plate 1.

Cet ensemble 100 comporte encore des moyens de maintien 5, qui sont solidaires de la platine 1, respectivement du cadran 2, et qui sont agencés pour coopérer avec des moyens de maintien complémentaire 6. Ces moyens 6 sont solidaires du cadran 2, respectivement de la platine 1.This assembly 100 also comprises holding means 5, which are integral with the plate 1, respectively of the dial 2, and which are arranged to cooperate with complementary holding means 6. These means 6 are integral with the dial 2, respectively of the platinum 1.

Les moyens de maintien 5 ou/et moyens de maintien complémentaire 6 comportent des moyens de rappel élastique 7, pour plaquer le au moins un cadran 2 en appui sur la au moins une platine 1.The holding means 5 and / or complementary holding means 6 comprise elastic return means 7 for pressing the at least one dial 2 to bear on the at least one plate 1.

Selon l'invention, et tel que visible sur les figures 1, 2, 3, 6 et 8, les moyens de rappel élastique 7 ont une mobilité sensiblement tangentielle selon un plan PT, lequel est perpendiculaire à la fois au plan P de la platine 2 et à une radiale R laquelle joint le centre O de la platine 2 aux moyens de rappel élastique 7.According to the invention, and as visible on the Figures 1, 2, 3, 6 and 8 the elastic return means 7 have a substantially tangential mobility along a plane PT, which is perpendicular both to the plane P of the plate 2 and to a radial R which joins the center O of the plate 2 to the elastic return means 7.

Cette mobilité tangentielle permet de ne pas empêcher les déformations dues aux contraintes thermiques du cadran 2, respectivement de la platine 1.This tangential mobility makes it possible not to prevent the deformations due to the thermal stresses of the dial 2, respectively of the plate 1.

L'invention est illustrée plus particulièrement pour le cas où les pions 3 et les moyens de maintien 5 sont solidaires de la platine 1. L'homme du métier saura réaliser, d'une part la configuration inverse où ils sont solidaires du cadran 2, et d'autre part les configurations mixtes où, ou bien les pions 3 sont solidaires de la platine 1 et les moyens de maintien 5 sont solidaires du cadran 2, ou bien les pions 3 sont solidaires du cadran 2 et les moyens de maintien 5 sont solidaires de la platine 1.The invention is illustrated more particularly for the case where the pins 3 and the holding means 5 are integral with the plate 1. Those skilled in the art will realize, on the one hand the reverse configuration where they are integral with the dial 2, and on the other hand the mixed configurations where, or the pins 3 are integral with the plate 1 and the holding means 5 are integral with the dial 2, or the pins 3 are integral with the dial 2 and the holding means 5 are integral with the plate 1.

De façon préférée, tel que visible sur les figures 1, 4, et 8, les rainures oblongues 4 sont orientées de façon sensiblement radiale par rapport à un axe D placé sensiblement au centre O de la platine 1 et perpendiculaire au plan P de la platine 1. Ainsi, le cadran 2 peut se dilater ou se contracter radialement sur la platine 1, tout en étant toujours orienté par les pions 3 dans les rainures oblongues 4, et en étant tenu axialement par les moyens de maintien 5, avantageusement constitués par des clips.Preferably, as visible on the Figures 1, 4, and 8 , the oblong grooves 4 are oriented substantially radially with respect to an axis D placed substantially at the center O of the plate 1 and perpendicular to the plane P of the plate 1. Thus, the dial 2 can expand or contract radially on the platinum 1, while still being oriented by the pins 3 in the oblong grooves 4, and being held axially by the holding means 5, advantageously constituted by clips.

Avantageusement, plusieurs pions 3 sont utilisés pour l'orientation. De préférence un de ces pions 3 est utilisé pour le centrage en position, et les autres sont construits avec un ébat plus larges avec leurs rainures 4 respectives, pour assurer le guidage.Advantageously, several pins 3 are used for the orientation. Preferably one of these pins 3 is used for centering in position, and the others are constructed with a wider outline with their respective grooves 4, to provide guiding.

De préférence, pour un premier pion 3 utilisé pour le centrage, un premier jeu tangentiel JT1, entre ce premier dit pion de centrage 3 et une première rainure oblongue 4 qui lui correspond, est inférieur au jeu tangentiel JT entre chacun des autres pions de centrage 3 et la rainure oblongue 4 leur correspondant.Preferably, for a first pin 3 used for centering, a first tangential clearance JT1 between this first said centering pin 3 and a corresponding first oblong groove 4 is less than the tangential clearance JT between each of the other centering pins. 3 and the oblong groove 4 corresponding to them.

La rainure 4 du premier pion de centrage peut aussi être réduite à un simple alésage, auquel cas ce premier pion 3 sert de pivot au cadran 2 par rapport à la platine 1.The groove 4 of the first centering pin may also be reduced to a simple bore, in which case this first pin 3 serves as a pivot to the dial 2 relative to the plate 1.

Toutefois, dans une réalisation particulière et illustrée par les figures, au moins une dite rainure oblongue 4 est ouverte et débouchante, et de préférence toutes les rainures oblongues 4 sont ouvertes et débouchantes, de façon à permettre une déformation du cadran lors de dilatations thermiques.However, in a particular embodiment and illustrated by the figures, at least one said oblong groove 4 is open and open, and preferably all the oblong grooves 4 are open and open, so as to allow deformation of the dial during thermal expansion.

De préférence, le jeu radial JR1, entre ce premier pion de centrage 3 et sa première rainure oblongue 4 qui lui correspond, est supérieur ou égal au jeu thermique radial maximal entre la platine 1 et le cadran 2.Preferably, the radial clearance JR1, between this first centering pin 3 and its corresponding first oblong groove 4, is greater than or equal to the maximum radial thermal clearance between the plate 1 and the dial 2.

Dans la réalisation illustrée par les figures, les moyens de maintien 5 sont réalisés sous la forme de pattes de clipage ou clips. Ainsi, ces moyens de maintien 5 ou/et moyens de maintien complémentaire 6 porteurs des moyens de rappel élastique 7 comportent au moins une patte 8 élastique de clipage, saillante en porte-à-faux par rapport au cadran 2, ou respectivement à la platine 1, selon une direction sensiblement perpendiculaire au plan du cadran 2 ou respectivement de la platine 1.In the embodiment illustrated by the figures, the holding means 5 are made in the form of clipping lugs or clips. Thus, these holding means 5 and / or complementary holding means 6 carrying the elastic return means 7 comprise at least one elastic clipping tab 8, protruding cantilevered with respect to the dial 2, or respectively to the plate 1, in a direction substantially perpendicular to the plane of the dial 2 or respectively of the plate 1.

La patte 8 comporte une tête 9 avec une surface d'arrêt 11 en retour, laquelle surface d'arrêt 11 est agencée pour coopérer en appui avec une surface complémentaire d'arrêt 12 que comporte la platine 1, ou respectivement le cadran 2.The tab 8 comprises a head 9 with a stop surface 11 in return, which stop surface 11 is arranged to cooperate in abutment with a complementary stop surface 12 which comprises the plate 1, or respectively the dial 2.

De préférence, chaque patte 8 est mobile dans une encoche 13 sensiblement radiale par rapport à la platine 1 ou respectivement au cadran 2, avec un jeu radial au moins égal au jeu thermique maximal entre la platine 1 et le cadran 2.Preferably, each tab 8 is movable in a notch 13 substantially radial with respect to the plate 1 or respectively to the dial 2, with a radial clearance at least equal to the maximum thermal clearance between the plate 1 and the dial 2.

Dans une exécution particulière, tel que visible sur les figures, au moins une dite encoche 13 radiale est ouverte et débouchante.In a particular embodiment, as visible in the figures, at least one said radial notch 13 is open and open.

Avantageusement, le cadran 2 est brut de découpage.Advantageously, the dial 2 is rough cutting.

L'invention concerne encore une pièce d'horlogerie 1000 comportant au moins un tel ensemble horloger 100.The invention also relates to a timepiece 1000 comprising at least one such watch assembly 100.

L'invention permet de garantir la bonne tenue du cadran sur la platine quelle que soit la température de service de la montre. La dilatation différentielle du cadran et de la platine n'est donc plus critique.The invention makes it possible to guarantee the good behavior of the dial on the plate regardless of the service temperature of the watch. The differential expansion of the dial and platinum is no longer critical.

Elle permet aussi de réduire les coûts de fabrication du cadran, qui n'a pas besoin d'être injecté ou pré-usiné, mais qui peut provenir directement de découpe, par exemple sous la forme d'un folio découpé, avec un coût inférieur.It also makes it possible to reduce the manufacturing costs of the dial, which does not need to be injected or pre-machined, but which can come directly from cutting, for example in the form of a cut sheet, with a lower cost. .

L'assemblage des composants est simple et bon marché, le clipage ne nécessite pas d'équipement particulier.Assembly of components is simple and cheap, clipping does not require special equipment.

Le mode de maintien du cadran sur la platine autorise tout retournement de l'ensemble pré-assemblé durant les phases de fabrication de la montre, grâce au bon maintien assuré par les pattes de maintien élastique.The mode of holding the dial on the turntable allows any reversal of the assembly pre-assembled during the manufacturing phases of the watch, thanks to the good support provided by the elastic holding tabs.

Le temps d'assemblage est faible, grâce à l'absence de vis, de colle, ou similaire.The assembly time is low, thanks to the absence of screws, glue, or similar.

Claims (9)

  1. Timepiece assembly (100) comprising at least one bottom plate (1) and at least one dial (2) arranged to be secured one on top of the other, comprising a plurality of centring pins (3) integral with said bottom plate (1), respectively with said dial (2), each arranged to cooperate, with radial and tangential play, with an oblong groove (4) in said dial (2), respectively in said bottom plate (1), for the relative positioning of said at least one dial (2) relative to said at least one bottom plate (1), said assembly (100) further comprising a holding means (5) integral with said bottom plate (1), respectively with said dial (2), arranged to cooperate with a complementary holding means (6) integral with said dial (2), respectively with said bottom plate (1), said holding means (5) and/or said complementary holding means (6) comprising an elastic return means (7) for pressing said at least one dial (2) resting onto said at least one bottom plate (1), wherein said elastic return means (7) has substantially tangential mobility along a plane (PT) perpendicular to the plane (P) of said bottom plate (1) and to a radial line (R) connecting the centre (O) of said bottom plate (1) to said elastic return means (7), and characterized in that said holding means (5) and/or said complementary holding means (6) carrying said elastic return means (7) includes at least one elastic clip lug (8), which juts in a cantilever manner out relative to said dial (2) or respectively to said bottom plate (1) in a substantially perpendicular direction to the plane of said dial (2) or of said bottom plate (1), said lug (8) comprising a head (9) with a return stop surface (11) for cooperating in abutment with a complementary stop surface (12) comprised in said bottom plate (1) or respectively in said dial (2).
  2. Timepiece assembly (100) according to claim 1, characterized in that said oblong grooves (4) are oriented substantially radially to an axis (D) positioned substantially at the centre (O) of said bottom plate (1) and perpendicular to said plane (P) of said bottom plate (1).
  3. Timepiece assembly (100) according to any of the preceding claims, characterized in that a first tangential play (JT1), between a first said centring pin (3) and a first said oblong groove (4) which is associated therewith, is less than the tangential play (JT) between each of the other said centring pins (3) and said oblong groove (4) associated therewith.
  4. Timepiece assembly (100) according to any of the preceding claims, characterized in that the radial play (JR1) between a first said centring pin (3) and a first said oblong groove (4) associated therewith, is greater than or equal to the maximum radial thermal play between said bottom plate (1) and said dial (2).
  5. Timepiece assembly (100) according to claim 1, characterized in that at least one said oblong groove (4) is a through groove.
  6. Timepiece assembly (100) according to any of the preceding claims, characterized in that each said lug (8) is moveable in a notch (13) substantially radial to said bottom plate (1) or respectively to said dial (2), with radial play at least equal to the maximum thermal play between said bottom plate (1) and said dial (2).
  7. Timepiece assembly (100) according to the preceding claim, characterized in that said at least one said radial notch (13) is a through notch.
  8. Timepiece assembly (100) according to any of the preceding claims, characterized in that said dial (2) is a cut blank dial.
  9. Timepiece (1000) including at least one timepiece assembly (100) according to any of the preceding claims.
EP20120178027 2012-07-26 2012-07-26 Dial attachment to a timepiece plate Active EP2690509B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP20120178027 EP2690509B1 (en) 2012-07-26 2012-07-26 Dial attachment to a timepiece plate
US13/946,382 US8817580B2 (en) 2012-07-26 2013-07-19 Fastening of a dial to a timepiece bottom plate
CN201320452242.5U CN203551956U (en) 2012-07-26 2013-07-26 Clock assembly and clock comprising at least one clock assembly
JP2013155240A JP5646014B2 (en) 2012-07-26 2013-07-26 Securing the dial to the bottom plate of the watch
CN201310320163.3A CN103576531B (en) 2012-07-26 2013-07-26 Dial plate and timepiece bottom plate fastening

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120178027 EP2690509B1 (en) 2012-07-26 2012-07-26 Dial attachment to a timepiece plate

Publications (2)

Publication Number Publication Date
EP2690509A1 EP2690509A1 (en) 2014-01-29
EP2690509B1 true EP2690509B1 (en) 2014-12-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20120178027 Active EP2690509B1 (en) 2012-07-26 2012-07-26 Dial attachment to a timepiece plate

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US (1) US8817580B2 (en)
EP (1) EP2690509B1 (en)
JP (1) JP5646014B2 (en)
CN (2) CN103576531B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3123252B1 (en) * 2014-03-25 2018-08-22 ETA SA Manufacture Horlogère Suisse Timepiece provided with a dial and related attachment method
JP6355282B1 (en) * 2017-03-13 2018-07-11 セイコーインスツル株式会社 Fixed structure for mobile device parts
CH713604A1 (en) * 2017-03-22 2018-09-28 Sa De La Manufacture Dhorlogerie Audemars Piguet & Cie Selection and actuation mechanism as well as a device for adjusting the functions of a timepiece.
EP4109181A1 (en) * 2021-06-21 2022-12-28 ETA SA Manufacture Horlogère Suisse Dial, watch comprising such a dial and method for installing such a dial in a watch
EP4134755A1 (en) * 2021-08-09 2023-02-15 ETA SA Manufacture Horlogère Suisse Key for holding a dial to the plate of a timepiece movement

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
US543628A (en) * 1894-03-30 1895-07-30 Device for securing dials to watch-movements
CH82809A (en) * 1919-04-24 1919-10-16 Ltd H Williamson Device for fixing a dial with feet to a plate of a watch movement, a counter etc.
CH120846A (en) * 1926-08-30 1927-06-01 Bovet Freres & Co S A Device for fixing a watch dial to the plate of a watch movement.
CH125760A (en) * 1926-09-16 1928-05-01 Adolf Gaertner Joseph Device for fastening the dial of clocks, in particular pocket watches, to the base.
JPS5125149B1 (en) * 1970-12-10 1976-07-29
JPS5313415Y2 (en) * 1972-08-09 1978-04-11
JPS5759972Y2 (en) * 1977-09-19 1982-12-21
DE29607040U1 (en) * 1996-04-18 1996-07-18 Gira Giersiepen Gmbh & Co Kg, 42477 Radevormwald Display device
JP4355104B2 (en) * 1998-07-10 2009-10-28 シチズンホールディングス株式会社 clock
EP1046967B1 (en) * 1999-04-22 2007-03-28 ETA SA Manufacture Horlogère Suisse Method for mounting a casing-ring in a watch case and case-ring used in said method
DE69939974D1 (en) * 1999-04-22 2009-01-08 Eta Sa Mft Horlogere Suisse Mutual fastening of a glass, a dial and a work ring for a clock
JP4398555B2 (en) * 2000-01-13 2010-01-13 シチズンホールディングス株式会社 Clock display board fixing structure
WO2006099882A1 (en) * 2005-03-23 2006-09-28 Marblia Ltd Timepiece movement

Also Published As

Publication number Publication date
CN203551956U (en) 2014-04-16
CN103576531B (en) 2016-06-01
EP2690509A1 (en) 2014-01-29
JP2014025937A (en) 2014-02-06
US8817580B2 (en) 2014-08-26
CN103576531A (en) 2014-02-12
US20140029393A1 (en) 2014-01-30
JP5646014B2 (en) 2014-12-24

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