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EP3835880A1 - Horological dial with feet - Google Patents

Horological dial with feet Download PDF

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Publication number
EP3835880A1
EP3835880A1 EP19214648.8A EP19214648A EP3835880A1 EP 3835880 A1 EP3835880 A1 EP 3835880A1 EP 19214648 A EP19214648 A EP 19214648A EP 3835880 A1 EP3835880 A1 EP 3835880A1
Authority
EP
European Patent Office
Prior art keywords
dial
foot
housing
plate
ring
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.)
Granted
Application number
EP19214648.8A
Other languages
German (de)
French (fr)
Other versions
EP3835880B1 (en
Inventor
Stéphane Lauper
Lionel BLASER
Alexandre Netuschill
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.)
Comadur SA
Original Assignee
Comadur 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 Comadur SA filed Critical Comadur SA
Priority to EP19214648.8A priority Critical patent/EP3835880B1/en
Priority to JP2020188482A priority patent/JP6826231B1/en
Priority to CN202011346848.1A priority patent/CN112947029B/en
Priority to KR1020200165749A priority patent/KR102256417B1/en
Priority to US17/118,450 priority patent/US11340556B2/en
Publication of EP3835880A1 publication Critical patent/EP3835880A1/en
Application granted granted Critical
Publication of EP3835880B1 publication Critical patent/EP3835880B1/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
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/14—Fastening the dials to the clock or watch plates
    • 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
    • G04B19/065—Dials with several parts
    • 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
    • G04B19/12—Selection of materials for dials or graduations markings
    • 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
    • G04B37/0008—Cases for pocket watches and wrist watches
    • 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
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses

Definitions

  • the invention relates to a dial made of fragile material with feet for a timepiece.
  • the invention also relates to a method for manufacturing such a dial.
  • the invention also relates to a watch case comprising a dial made of fragile material.
  • the invention further relates to a watch comprising the watch case.
  • Watch faces can be made from fragile materials such as ceramic, mother-of-pearl, aventurine, etc. which have an attractive aesthetic appearance but which have the disadvantages of having a high thickness due to the need to add a support comprising the feet, to have many steps to assemble them and to be fragile.
  • the dial comprises two plates glued one on the other with a support plate made of a metallic material such as brass and a plate visible through the crystal and which is made of the fragile material in question.
  • the support plate also has feet for positioning the dial.
  • dials with feet of the "sandwich" type as described for example in the patent. CH 352 962 .
  • the feet are welded to a first metal plate onto which a second metal plate is welded or glued, constituting the visible face of the dial, comprising hour markers in relief, but no particular coating.
  • an enamelled dial with positioning feet consisting of a first ceramic element assembled to a second element to which at least one foot is attached, characterized in that the outer surface of said first element is coated with one or two layers of enamel and in that the second element is provided with at least one housing making it possible to fix a foot by driving in and / or gluing before the assembly of the first and second elements by a glue or solder joint.
  • the present invention therefore aims to overcome the drawbacks of the prior art, by providing a dial made of thinner fragile material and a method of manufacturing a dial with mounted feet comprising a smaller number of steps.
  • the object of the invention is therefore to provide a dial made of fragile material, the size of which is identical to what is done conventionally, but by eliminating the metal plate in favor of the thickening of the plate of fragile material to make it more solid. .
  • the invention relates to a dial intended to be mounted in a watch case, the dial comprising a plate made of a fragile material, said plate defining a horizontal plane and comprising at least one housing defining an assembly point for at least one foot formed by a body and a head arranged to rest in said at least one housing, characterized in that the foot comprises on its head a circular groove arranged to receive a ring made of a shape memory alloy able to move from a retracted position to a rest position in which the foot is mechanically held in said housing.
  • the invention also relates to a watch case comprising a dial as defined in claims 1 to 6.
  • the invention also relates to a watch comprising the watch case described above.
  • the present invention relates to a construction of a dial arranged to be mounted in a watch case comprising a clockwork movement M surmounted by a dial 2 above which move hour hands, H of minutes m and of seconds S driven by movement M.
  • the dial 2 is formed of a plate 3 made of the fragile material.
  • the term “fragile material” is understood to mean any material liable to break / crack following machining or under the effect of an impact. For example, to name a few, it can be ceramic, quartz with one of its varieties which is aventurine, sapphire, mother of pearl, silicon, etc.
  • the watch case 1 comprises a crystal 5, a back 8 and a junction element between the crystal 5 and the back 8 made in one or more parts and comprising a bezel 6 and a caseband 7.
  • the side face of the fragile plate 3 is oriented towards the crystal 5 and the back side of the plate is oriented towards the bottom 8 of the watch case 1, the plate 3 forming the dial defining a horizontal plane.
  • the plate 3 is pierced with at least one orifice 9 for the passage of the axis 10 of the needles.
  • the plate 3 forming the dial comprises on the back side, at least one housing 3a in which is disposed a foot 3b, the housing defining an assembly point for the foot.
  • the foot is formed by a body and a head arranged to rest in said at least one housing, the foot being in the form of a cylinder of revolution, the head and the body of the foot having an identical diameter.
  • the housing 3a of the dial 2 can be produced by any suitable means, such as machining, milling, laser ablation, or even directly during the molding of the support.
  • the hollow can be obtained by machining or laser ablation of the green ceramic, the hollowed out support then being fired and densified.
  • the foot 3a comprises on its head a circular groove 30 arranged to receive a ring 31 made of a shape memory alloy.
  • the ring 31 is able to pass from a first position, called the retracted position in which it rests in the groove, to a second position, called the rest position, in which the ring 31 returns to its initial shape and protrudes at least in part from the annular groove 30 so as to be in contact with the walls of the housing and to mechanically hold the foot in the housing.
  • the ring is made of a shape memory alloy such as an alloy of nickel and titanium, known under the name of Nitinol.
  • the ring 3 can be produced in the form of a star comprising eight lobes 30. Such a geometry makes it possible to guarantee better deformation of the ring 3 with respect to a ring of annular shape, the section of the ring 3 according to the invention having a Section smaller than an annular ring.
  • Another advantage of such a geometry is to obtain several points of contact 31 with the wall 7 of the recess 5, which makes it possible to exert more force on a smaller surface and thus guarantee a good hold.
  • the housing has an opening opening onto one of the faces of the plate 3, in this case the rear face, and comprises a first part in the immediate vicinity of the opening, called the upper part and having a cylindrical section, and a second part, called the lower part, having a frustoconical section.
  • the housing 3a has a slight taper, the surface of a cross section of the recess increasing slightly with depth, the recess then having a slightly inclined wall so as to increase the space between the foot and the inclined wall. housing and allow easier deformation of the ring 31 and more efficient mechanical anchoring of the foot.
  • the depth of the housing 3a is less than the thickness of the plate forming the dial and substantially greater than the height of the head of the foot so that the foot is well supported.

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

Abstract

L'invention concerne un cadran destiné à être monté dans une boîte de montre, le cadran comprenant un plaque réalisée dans un matériau fragile, ladite plaque définissant un plan horizontal et comprenant au moins un logement définissant un point d'assemblage pour au moins un pied formé d'un corps et d'une tête agencée pour reposer dans ledit au moins un logement, caractérisé en ce que le pied comprend sur sa tête une gorge circulaire agencée pour recevoir un jonc réalisé dans un alliage à mémoire de forme apte à passer d'une position rétractée à une position de repos dans laquelle le pied est maintenu mécaniquement dans ledit logement.

Figure imgaf001
The invention relates to a dial intended to be mounted in a watch case, the dial comprising a plate made of a fragile material, said plate defining a horizontal plane and comprising at least one housing defining an assembly point for at least one foot formed of a body and a head arranged to rest in said at least one housing, characterized in that the foot comprises on its head a circular groove arranged to receive a ring made of a shape memory alloy capable of passing through 'a retracted position to a rest position in which the foot is mechanically held in said housing.
Figure imgaf001

Description

DOMAINE TECHNIQUE DE L'INVENTIONTECHNICAL FIELD OF THE INVENTION

L'invention concerne un cadran en matériau fragile avec pieds pour pièce d'horlogerie. L'invention concerne également un procédé permettant de fabriquer un tel cadran.The invention relates to a dial made of fragile material with feet for a timepiece. The invention also relates to a method for manufacturing such a dial.

L'invention concerne également une boîte de montre comprenant un cadran en matériau fragile.The invention also relates to a watch case comprising a dial made of fragile material.

L'invention concerne en outre une montre comportant la boîte de montre.The invention further relates to a watch comprising the watch case.

ETAT DE LA TECHNIQUESTATE OF THE ART

Les cadrans de montre peuvent être réalisés dans des matériaux fragile tels que la céramique, la nacre, l'aventurine, etc. qui présentent un aspect esthétique attractifs mais qui ont pour inconvénients de présenter une épaisseur élevée du fait de devoir ajouter un support comprenant les pieds, de comporter de nombreuses étapes pour les assembler et d'être fragiles.Watch faces can be made from fragile materials such as ceramic, mother-of-pearl, aventurine, etc. which have an attractive aesthetic appearance but which have the disadvantages of having a high thickness due to the need to add a support comprising the feet, to have many steps to assemble them and to be fragile.

Dans une construction classique le cadran comporte deux plaques collées l'une sur l'autre avec une plaque de support réalisée dans un matériau métallique tel que le laiton et une plaque visible au travers de la glace et qui est réalisée dans le matériau fragile en question. Dans cette construction, la plaque de support présente également des pieds pour positionner le cadran.In a conventional construction, the dial comprises two plates glued one on the other with a support plate made of a metallic material such as brass and a plate visible through the crystal and which is made of the fragile material in question. . In this construction, the support plate also has feet for positioning the dial.

On connaît également des cadrans avec pieds de type "sandwich" comme décrit par exemple dans le brevet CH 352 962 . Les pieds sont soudés sur une première plaque métallique sur laquelle on vient souder ou coller une deuxième plaque métallique constituant la face visible du cadran comportant en relief des index horaires, mais aucun revêtement particulier.There are also known dials with feet of the "sandwich" type as described for example in the patent. CH 352 962 . The feet are welded to a first metal plate onto which a second metal plate is welded or glued, constituting the visible face of the dial, comprising hour markers in relief, but no particular coating.

On connait également du brevet EP1538493 un cadran émaillé avec pieds de positionnement constitué par un premier élément en céramique assemblé à un deuxième élément auquel est assujetti au moins un pied, caractérisé en ce que la surface externe dudit premier élément est revêtue d'une à deux couches d'émail et en ce que le deuxième élément est pourvu d'au moins un logement permettant de fixer un pied par chassage et/ou collage avant l'assemblage des premier et deuxième éléments par un joint de colle ou de soudure.We also know from the patent EP1538493 an enamelled dial with positioning feet consisting of a first ceramic element assembled to a second element to which at least one foot is attached, characterized in that the outer surface of said first element is coated with one or two layers of enamel and in that the second element is provided with at least one housing making it possible to fix a foot by driving in and / or gluing before the assembly of the first and second elements by a glue or solder joint.

La présente invention vise donc à pallier les inconvénients de l'art antérieur, en procurant un cadran en matériau fragile plus fin et un procédé de fabrication d'un cadran avec pieds montés comportant un moins grand nombre d'étapes.The present invention therefore aims to overcome the drawbacks of the prior art, by providing a dial made of thinner fragile material and a method of manufacturing a dial with mounted feet comprising a smaller number of steps.

RESUMÉ DE L'INVENTIONSUMMARY OF THE INVENTION

L'invention a donc pour but de fournir un cadran en matériau fragile dont l'encombrement est identique à ce qui se fait classiquement, mais en supprimant la plaque métallique au profit de l'épaississement de la plaque en matériau fragile pour la rendre plus solide.The object of the invention is therefore to provide a dial made of fragile material, the size of which is identical to what is done conventionally, but by eliminating the metal plate in favor of the thickening of the plate of fragile material to make it more solid. .

A cet effet, l'invention concerne un cadran destiné à être monté dans une boîte de montre, le cadran comprenant un plaque réalisée dans un matériau fragile, ladite plaque définissant un plan horizontal et comprenant au moins un logement définissant un point d'assemblage pour au moins un pied formé d'un corps et d'une tête agencée pour reposer dans ledit au moins un logement, caractérisé en ce que le pied comprend sur sa tête une gorge circulaire agencée pour recevoir un jonc réalisé dans un alliage à mémoire de forme apte à passer d'une position rétractée à une position de repos dans laquelle le pied est maintenu mécaniquement dans ledit logement.To this end, the invention relates to a dial intended to be mounted in a watch case, the dial comprising a plate made of a fragile material, said plate defining a horizontal plane and comprising at least one housing defining an assembly point for at least one foot formed by a body and a head arranged to rest in said at least one housing, characterized in that the foot comprises on its head a circular groove arranged to receive a ring made of a shape memory alloy able to move from a retracted position to a rest position in which the foot is mechanically held in said housing.

Des formes particulières du cadran sont définies dans les revendications dépendantes 2 à 6.Particular shapes of the dial are defined in dependent claims 2 to 6.

A cet effet, l'invention concerne également une boîte de montre comprenant un cadran tel que défini selon les revendications 1 à 6.To this end, the invention also relates to a watch case comprising a dial as defined in claims 1 to 6.

A cet effet, l'invention concerne également une montre comportant la boîte de montre décrite ci-dessus.To this end, the invention also relates to a watch comprising the watch case described above.

BRÈVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

Les buts, avantages et caractéristiques du cadran selon l'invention apparaîtront mieux dans la description suivante sur la base d'au moins une forme d'exécution non limitative illustrée par les dessins sur lesquels :

  • la figure 1 est une vue en coupe d'une boîte de montre équipée d'un cadran selon de réalisation de l'invention ;
  • la figure 2 est une vue en coupe du cadran de la figure 1 ; et
  • la figure 3 est une vue en coupe d'un pied de cadran selon l'invention.
The aims, advantages and characteristics of the dial according to the invention will appear better in the following description on the basis of at least one non-limiting embodiment illustrated by the drawings in which:
  • the figure 1 is a sectional view of a watch case equipped with a dial according to an embodiment of the invention;
  • the figure 2 is a sectional view of the dial of the figure 1 ; and
  • the figure 3 is a sectional view of a dial base according to the invention.

DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

La présente invention se rapporte à une construction de cadran agencé pour être monté dans une boîte de montre comprenant un mouvement d'horlogerie M surmonté d'un cadran 2 au-dessus duquel se déplacent des aiguilles d'heures, H de minutes m et de secondes S entrainées par le mouvement M. Se référant à la figure 1, le cadran 2 est formé d'une plaque 3 réalisée dans le matériau fragile. On entend par matériau fragile tout matériau susceptible de se casser/fissurer suite à un usinage ou sous l'effet d'un choc. Par exemple, pour en citer quelques-uns, il peut s'agir de la céramique, du quartz avec une de ses variétés qui est l'aventurine, du saphir, de la nacre, du silicium, etc.The present invention relates to a construction of a dial arranged to be mounted in a watch case comprising a clockwork movement M surmounted by a dial 2 above which move hour hands, H of minutes m and of seconds S driven by movement M. Referring to the figure 1 , the dial 2 is formed of a plate 3 made of the fragile material. The term “fragile material” is understood to mean any material liable to break / crack following machining or under the effect of an impact. For example, to name a few, it can be ceramic, quartz with one of its varieties which is aventurine, sapphire, mother of pearl, silicon, etc.

De manière conventionnelle, la boîte de montre 1 comporte une glace 5, un fond 8 et un élément de jonction entre la glace 5 et le fond 8 réalisé en une ou plusieurs pièces et comprenant une lunette 6 et une carrure 7. Le côté face de la plaque fragile 3 est orienté vers la glace 5 et le côté dos de la plaque est orienté vers le fond 8 de la boîte de montre 1, la plaque 3 formant le cadran définissant un plan horizontal. De manière classique, la plaque 3 est percée d'au moins un orifice 9 pour le passage de l'axe 10 des aiguilles.Conventionally, the watch case 1 comprises a crystal 5, a back 8 and a junction element between the crystal 5 and the back 8 made in one or more parts and comprising a bezel 6 and a caseband 7. The side face of the fragile plate 3 is oriented towards the crystal 5 and the back side of the plate is oriented towards the bottom 8 of the watch case 1, the plate 3 forming the dial defining a horizontal plane. Conventionally, the plate 3 is pierced with at least one orifice 9 for the passage of the axis 10 of the needles.

La plaque 3 formant le cadran comprend côté dos, au moins un logement 3a dans lequel est disposé un pied 3b, le logement définissant un point d'assemblage pour le pied. De manière classique, le pied est formé par un corps et une tête agencée pour reposer dans ledit au moins un logement, le pied se présentant sous la forme d'un cylindre de révolution, la tête et le corps du pied ayant un diamètre identique.The plate 3 forming the dial comprises on the back side, at least one housing 3a in which is disposed a foot 3b, the housing defining an assembly point for the foot. Conventionally, the foot is formed by a body and a head arranged to rest in said at least one housing, the foot being in the form of a cylinder of revolution, the head and the body of the foot having an identical diameter.

La logement 3a du cadran 2 peut être réalisé par tout moyen adéquat, tel que l'usinage, le fraisage, l'ablation laser, voir directement lors du moulage du support. Par exemple, dans le cas d'un support céramique, la creusure peut être obtenue par usinage ou ablation laser de la céramique crue, le support creusé étant ensuite cuit et densifié.The housing 3a of the dial 2 can be produced by any suitable means, such as machining, milling, laser ablation, or even directly during the molding of the support. For example, in the case of a ceramic support, the hollow can be obtained by machining or laser ablation of the green ceramic, the hollowed out support then being fired and densified.

Selon l'invention, le pied 3a comprend sur sa tête une gorge circulaire 30 agencée pour recevoir un jonc 31 réalisé dans un alliage à mémoire de forme. Le jonc 31 est apte à passer d'une première position, dite position rétractée dans laquelle il repose dans la gorge, vers une deuxième position, dite position de repos, dans laquelle le jonc 31 reprend sa forme initiale et dépasse au moins en partie de la gorge annulaire 30 de manière à être en contact avec les parois du logement et maintenir mécaniquement le pied dans le logement. Le jonc est réalisé en un alliage à mémoire de forme tel qu'un alliage de nickel et de titane, connu sous le nom de Nitinol.According to the invention, the foot 3a comprises on its head a circular groove 30 arranged to receive a ring 31 made of a shape memory alloy. The ring 31 is able to pass from a first position, called the retracted position in which it rests in the groove, to a second position, called the rest position, in which the ring 31 returns to its initial shape and protrudes at least in part from the annular groove 30 so as to be in contact with the walls of the housing and to mechanically hold the foot in the housing. The ring is made of a shape memory alloy such as an alloy of nickel and titanium, known under the name of Nitinol.

Le jonc 3 peut être réalisé sous la forme d'une étoile comprenant huit lobes 30. Une telle géométrie permet de garantir une meilleure déformation du jonc 3 par rapport à un jonc de forme annulaire, la section du jonc 3 selon l'invention présentant une section plus faible qu'un jonc annulaire.The ring 3 can be produced in the form of a star comprising eight lobes 30. Such a geometry makes it possible to guarantee better deformation of the ring 3 with respect to a ring of annular shape, the section of the ring 3 according to the invention having a Section smaller than an annular ring.

Un autre avantage d'une telle géométrie est d'obtenir plusieurs points de contact 31 avec la paroi 7 de la creusure 5, ce qui permet d'exercer plus de force sur une surface plus faible et ainsi garantir un bon maintien.Another advantage of such a geometry is to obtain several points of contact 31 with the wall 7 of the recess 5, which makes it possible to exert more force on a smaller surface and thus guarantee a good hold.

L'homme du métier n'aura pas de difficulté particulière pour adapter la forme du jonc pour obtenir des effets similaires, il pourra diminuer ou augmenter le nombre de lobes de l'étoile pour obtenir des étoiles à cinq, six ou neuf lobes par exempleThose skilled in the art will not have any particular difficulty in adapting the shape of the rod to obtain similar effects, they will be able to decrease or increase the number of lobes of the star to obtain stars with five, six or nine lobes, for example.

Comme on peut l'observer sur la figure 2, le logement présente une ouverture débouchant sur l'une des faces de la plaque 3, en l'occurrence la face arrière, et comprend une première partie à proximité immédiate de l'ouverture, dite partie supérieure et présentant une section cylindrique, et une deuxième partie, dite partie inférieure, présentant une section tronconique.As can be seen on the figure 2 , the housing has an opening opening onto one of the faces of the plate 3, in this case the rear face, and comprises a first part in the immediate vicinity of the opening, called the upper part and having a cylindrical section, and a second part, called the lower part, having a frustoconical section.

De façon avantageuse, la logement 3a présente une légère conicité, la surface d'une section droite de la creusure augmentant légèrement avec la profondeur, la creusure présentant alors une paroi légèrement inclinée de façon à augmenter l'espace entre le pied et la paroi inclinée du logement et permettre une déformation plus aisée du jonc 31 et un ancrage mécanique plus efficace du pied.Advantageously, the housing 3a has a slight taper, the surface of a cross section of the recess increasing slightly with depth, the recess then having a slightly inclined wall so as to increase the space between the foot and the inclined wall. housing and allow easier deformation of the ring 31 and more efficient mechanical anchoring of the foot.

Selon l'invention, la profondeur du logement 3a est inférieure à l'épaisseur de la plaque formant le cadran et sensiblement supérieure à la hauteur de la tête du pied de manière à ce que le pied soit bien maintenu.According to the invention, the depth of the housing 3a is less than the thickness of the plate forming the dial and substantially greater than the height of the head of the foot so that the foot is well supported.

Claims (8)

Cadran (2) destiné à être monté dans une boîte de montre (1), le cadran (2) comprenant un plaque (4) réalisée dans un matériau fragile, ladite (3) définissant un plan horizontal et comprenant au moins un logement (3a) définissant un point d'assemblage pour au moins un pied (3b) formé par un corps et une tête agencée pour reposer dans ledit au moins un logement (3a), caractérisé en ce que le pied (3a) comprend sur sa tête une gorge circulaire (30) agencée pour recevoir un jonc (31) réalisé dans un alliage à mémoire de forme et apte à passer d'une position rétractée dans laquelle le jonc (31) repose dans la gorge (30), vers une position de repos dans laquelle le pied est maintenu mécaniquement dans ledit logement (3a).Dial (2) intended to be mounted in a watch case (1), the dial (2) comprising a plate (4) made of a fragile material, said (3) defining a horizontal plane and comprising at least one housing (3a ) defining an assembly point for at least one foot (3b) formed by a body and a head arranged to rest in said at least one housing (3a), characterized in that the foot (3a) comprises a groove on its head circular (30) arranged to receive a ring (31) made of a shape memory alloy and able to move from a retracted position in which the ring (31) rests in the groove (30), to a rest position in which the foot is mechanically held in said housing (3a). Cadran (2) selon la revendication 1, caractérisé en ce que le logement présente une ouverture débouchant sur l'une des faces de la plaque (4) et comprend une première partie, dite partie supérieure, présentant une section cylindrique, et une deuxième partie, dite partie inférieure, présentant une section tronconique.Dial (2) according to Claim 1, characterized in that the housing has an opening opening onto one of the faces of the plate (4) and comprises a first part, called the upper part, having a cylindrical section, and a second part , called the lower part, having a frustoconical section. Cadran (2) selon la revendication 1 ou 2, caractérisé en ce que la profondeur du logement (3) est inférieure à l'épaisseur de la plaque (3) formant le cadran (2) et est sensiblement supérieure à la hauteur de la tête du pied de manière à ce que le pied soit bien maintenu.Dial (2) according to claim 1 or 2, characterized in that the depth of the housing (3) is less than the thickness of the plate (3) forming the dial (2) and is substantially greater than the height of the head of the foot so that the foot is well supported. Cadran (2) selon l'une des revendication 1 à 3, caractérisé en ce que ledit jonc est réalisé en un alliage de nickel et de titane.Dial (2) according to one of claims 1 to 3, characterized in that said ring is made of an alloy of nickel and titanium. Cadran (2) selon l'une des revendication 1 à 4, caractérisé en ce que le logement (3a) a une forme complémentaire à celle du pied.Dial (2) according to one of claims 1 to 4, characterized in that the housing (3a) has a shape complementary to that of the foot. Cadran (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que la plaque (3) formant le cadran est réalisée dans un matériau fragile choisi parmi la liste comprenant la céramique, la nacre, l'aventurine, le saphir et le silicium.Dial (2) according to any one of the preceding claims, characterized in that the plate (3) forming the dial is made of a fragile material chosen from the list comprising ceramic, mother-of-pearl, aventurine, sapphire and silicon. Boîte de montre (1) comprenant un cadran selon l'une des revendications 1 à 6, la boîte () étant munie d'un fond (8), d'une glace (5) et d'un élément de jonction entre le fond (8) et la glace (5) réalisé en une ou plusieurs pièces et comprenant une carrure (7).Watch case (1) comprising a dial according to one of claims 1 to 6, the case () being provided with a back (8), a crystal (5) and a junction element between the back (8) and the crystal (5) made in one or more pieces and comprising a middle part (7). Montre comprenant une boîte (1) délimitant un volume dans lequel est monté le cadran (2) selon l'une quelconque des revendications précédentes.Watch comprising a box (1) delimiting a volume in which the dial (2) according to any one of the preceding claims is mounted.
EP19214648.8A 2019-12-10 2019-12-10 Horological dial with feet Active EP3835880B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP19214648.8A EP3835880B1 (en) 2019-12-10 2019-12-10 Horological dial with feet
JP2020188482A JP6826231B1 (en) 2019-12-10 2020-11-12 Front panel with feet and made of non-conductive material
CN202011346848.1A CN112947029B (en) 2019-12-10 2020-11-26 Dial made of non-conductive material with legs
KR1020200165749A KR102256417B1 (en) 2019-12-10 2020-12-01 Dial made of non-conductive material with feet
US17/118,450 US11340556B2 (en) 2019-12-10 2020-12-10 Dial made of non-conductive material with feet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19214648.8A EP3835880B1 (en) 2019-12-10 2019-12-10 Horological dial with feet

Publications (2)

Publication Number Publication Date
EP3835880A1 true EP3835880A1 (en) 2021-06-16
EP3835880B1 EP3835880B1 (en) 2022-08-10

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EP19214648.8A Active EP3835880B1 (en) 2019-12-10 2019-12-10 Horological dial with feet

Country Status (5)

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US (1) US11340556B2 (en)
EP (1) EP3835880B1 (en)
JP (1) JP6826231B1 (en)
KR (1) KR102256417B1 (en)
CN (1) CN112947029B (en)

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Publication number Priority date Publication date Assignee Title
EP4083717A1 (en) * 2021-04-29 2022-11-02 Rolex Sa Base for clock dial, plate for clock dial and clock dial

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Also Published As

Publication number Publication date
JP2021092551A (en) 2021-06-17
EP3835880B1 (en) 2022-08-10
CN112947029B (en) 2022-05-24
US11340556B2 (en) 2022-05-24
CN112947029A (en) 2021-06-11
US20210173343A1 (en) 2021-06-10
JP6826231B1 (en) 2021-02-03
KR102256417B1 (en) 2021-05-26

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