EP2899597B1 - Device for attaching a timepiece dial - Google Patents

Device for attaching a timepiece dial Download PDF

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Publication number
EP2899597B1
EP2899597B1 EP14152378.7A EP14152378A EP2899597B1 EP 2899597 B1 EP2899597 B1 EP 2899597B1 EP 14152378 A EP14152378 A EP 14152378A EP 2899597 B1 EP2899597 B1 EP 2899597B1
Authority
EP
European Patent Office
Prior art keywords
dial
ring
casing
casing ring
watch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14152378.7A
Other languages
German (de)
French (fr)
Other versions
EP2899597A1 (en
Inventor
Philipp Tschumi
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.)
Swatch Group Management Services AG
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Swatch Group Management Services AG
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 Swatch Group Management Services AG filed Critical Swatch Group Management Services AG
Priority to EP14152378.7A priority Critical patent/EP2899597B1/en
Priority to US14/546,164 priority patent/US9535403B2/en
Priority to JP2014248743A priority patent/JP5990561B2/en
Priority to CN201510030225.6A priority patent/CN104808472B/en
Publication of EP2899597A1 publication Critical patent/EP2899597A1/en
Priority to HK16100561.1A priority patent/HK1212787A1/en
Application granted granted Critical
Publication of EP2899597B1 publication Critical patent/EP2899597B1/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
    • 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
    • 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
    • G04B29/00—Frameworks
    • G04B29/04—Connecting or supporting 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
    • G04B37/00—Cases
    • G04B37/04—Mounting the clockwork in the case; Shock absorbing mountings
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/04—Devices for placing bearing jewels, bearing sleeves, or the like in position

Definitions

  • the present invention relates to the field of timepieces and, more particularly, a device for fixing a timepiece dial.
  • a circular mount fixed on the movement, comprises on its periphery recesses for receiving in force the corresponding parts of the dial.
  • the forceful mounting of the dial ensures that it can not move, even under the effect of shocks.
  • the movement of the watch comprises several holes formed at its periphery, the holes being intended to cooperate with feet secured to the dial.
  • Such a device also involves complex machining operations, the movement to be drilled and the feet of the dial to be made of a piece with the dial.
  • JP S54109576 discloses a watch delimited by a box formed of a bottom and a middle part, a clockwork movement being arranged in a casing ring housed in the watch case, the watch also comprising a dial disposed on the top of the circle in which the fastening ring has a S-shaped cross-section, an upper branch of the fastening ring resting on the dial and a lower branch of the fastening ring.
  • fixing ring being supported on the casing ring.
  • the device described in this document comprises a clearance above the lower branch of the fixing ring, the middle part does not clamp the fixing ring, and if it was the case, then a clearance between the upper branch and the dial would be created.
  • the present invention is intended in particular to overcome the various disadvantages of known devices of the prior art.
  • an object of the invention is to provide a device for fixing the dial on the movement which is simple to implement and which guarantees a good maintenance of the dial.
  • the invention also aims to provide a device for fixing the dial on the movement that is robust and inexpensive.
  • a watch delimited by a box formed of a bottom and a middle part, a movement being arranged in a casing ring housed in the watch case, the watch also comprising a dial disposed on the top of the casing ring and held by means of a fixing ring.
  • the fixing ring has a cross-section in the shape of an "S", an upper branch of the "S” resting on the dial and a lower branch of the "S” resting on the circle of The lower branch of the "S” is pinched between the middle and the casing ring, so as to enclose the dial between the upper branch of the "S” and the casing ring.
  • the invention also relates to a watch comprising a transparent or semi-transparent dial.
  • the watch case shown in figure 1 is delimited by a bottom 2 fixed by any appropriate means on a caseband 4.
  • a clockwork movement 6 is disposed in a casing ring 8 housed in the watch case 1.
  • the watch movement 6 comprises a flange 10 which bears on an inner peripheral shoulder 12 of the casing circle 8.
  • the watch also comprises a dial 14 disposed on the top of the casing ring 8 and held by means of a fixing ring 16 as described in more detail below.
  • the watch case 1 is closed at the top by an ice-cream 18 fixed to the caseband 4 with the interposition of a seal 20.
  • a through hole 22 pierced through the casing ring 8 is intended to receive (see FIG. figure 2 ) a rod 24 of a time setting ring 26, which simultaneously ensures the axial and radial positioning of the clockwork movement 6 inside the casing ring 8.
  • the casing ring 8 is surmounted by a peripheral rim 28 on which the dial 14 bears.
  • the fastening ring 16 made in one piece for example of metal, has a cross-section in the form of an "S" formed of an upper branch 16a and a lower branch 16c interconnected by an intermediate branch 16b .
  • the upper branch 16a of the fastening ring 16 bears on all or part of the periphery of the dial 14, while the lower branch 16c of the fastening ring 16 bears on the casing ring 8.
  • the casing ring 8 comprises in its median part an outer peripheral shoulder 30 on which the lower branch 16c of the fixing ring 16 bears.
  • the intermediate branch 16b of the fixing ring 16 matches the respective edges of the casing ring 8 and the dial 14, which allows the dial 14 to be centered with respect to the casing ring 8.
  • the internal diameter of the casing The fixing ring 16 is made with a slight clearance with respect to the outside diameter of the casing ring 8, so that the fixing ring 16 can fit on the casing ring 8.
  • the caseband 4 internally comprises a surface 32 complementary to the outer peripheral shoulder 30 of the casing ring 8, the lower branch 16c of the fixing ring 16 being clamped between the shoulder external device 30 of the casing circle 8 and the complementary surface 32 of the middle part 4 during assembly of the watch.
  • the upper branch 16a of the fixing ring 16 plates the dial 14 against the peripheral rim 28 of the casing ring 8, ensuring the perfect maintenance of the dial 14.
  • the height of the intermediate branch 16b of the fixing ring 16 is slightly less than the sum of the thicknesses of the dial 14 and the peripheral rim 28 of the casing ring 8.
  • the caseband 4 internally comprises a peripheral groove 34 which forms a clearance in which is housed with clearance the upper branch 16a of the fastening ring 16 and which is delimited by an outer edge 36 bearing on the dial 14.
  • width of the peripheral groove 34 is slightly greater than that of the upper branch 16a of the fastening ring 16 so as to facilitate assembly.
  • the outer edge 36 of the peripheral groove 34 is as thin as possible so as to maximize the visible surface of the dial 14.
  • Two complementary circular grooves 38a and 38b are formed respectively at the base of the middle part 4 and the casing circle 8.
  • the combination of the two circular grooves 38a and 38b forms a groove in which is placed a seal 40.
  • the seal 40 is compressed and deformed and exerts on the casing ring 8 a vertical thrust directed upwards. Under the effect of this thrust, the outer peripheral shoulder 30 of the casing ring 8 presses the lower leg 16c of the fixing ring 16 against the complementary surface 32 of the caseband 4. Under the effect of this nipping, branch upper 16a of the fixing ring 16 plates the dial 14 against the peripheral rim 28 of the casing ring 8.
  • the clockwork movement 6 is introduced from above into the casing ring 8, after which the dial 14 and the fixing ring 16 are placed on the top of the circle. 8.
  • the resulting assembly is then slid from the bottom 2 into the interior volume of the watch case 1. Finally, the bottom 2 is fixed on the middle part 4 of the watch.
  • Such an assembly thus ensures a fixing of the dial 14 in a simple and effective manner without having to use dial feet.
  • Such an assembly is particularly interesting for watches with a transparent or semi-transparent dial.
  • this assembly can also be used with watches having an opaque dial.
  • the watch case 1 comprises means for radial positioning of the dial 14 relative to the casing ring 8.
  • These positioning means may comprise, for example, a guide pin 42 positioned on the casing ring 8 and a notch 42 arranged in the dial 14, the guide pin 40 being intended to penetrate the notch 44 so as to ensure the angular positioning of the dial 14.
  • any other positioning means known to those skilled in the art may be suitable for the positioning of the dial 14.
  • the casing ring 8 is provided at regular distance intervals along its base of elastic blades which exert on it an elastic restoring force. vertical upward. Under the effect of this force, the casing ring 8 clamps the lower branch 16c of the fastening ring 16 against the caseband 4. Another method of fixing still the casing ring 8 is to screw it on the bottom 2 of the watch case 1.

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

Description

Domaine technique de l'inventionTechnical field of the invention

La présente invention concerne le domaine des pièces d'horlogerie et, plus particulièrement, un dispositif de fixation d'un cadran de pièce d'horlogerie.The present invention relates to the field of timepieces and, more particularly, a device for fixing a timepiece dial.

Arrière-plan technique de l'inventionTechnical background of the invention

Il est connu, dans le domaine des montres, d'utiliser des cadrans dans la surface inférieure, c'est-à-dire du côté mouvement desquels sont usinés des trous dans lesquels sont enchâssés des pieds métalliques. Ces pieds métalliques servent notamment à maintenir en place les cadrans par rapport au mouvement de la montre lors de l'assemblage de cette dernière. Un tel état de la technique est par exemple divulgué dans le document EP 0 465 988 .It is known, in the field of watches, to use dials in the lower surface, that is to say the side of which are machined holes in which are embedded metal feet. These metal feet serve in particular to keep in place the dials with respect to the movement of the watch during the assembly of the latter. Such a state of the art is for example disclosed in the document EP 0 465 988 .

La réalisation de tels cadrans implique des opérations d'usinage relativement complexes, les cadrans devant être percés plusieurs fois avec précision avant montage des pieds métalliques. Par ailleurs, l'utilisation de tels cadrans dans les montres squelettes se révèle peu esthétique.The realization of such dials involves relatively complex machining operations, the dials to be drilled several times accurately before mounting the metal feet. Moreover, the use of such dials in skeleton watches is unattractive.

D'autres dispositifs de maintien d'un cadran de montre existent et permettent de pallier au moins en partie les inconvénients mentionnés ci-dessus.Other devices for maintaining a watch face exist and make it possible to overcome at least in part the disadvantages mentioned above.

Le document US 857 516 par exemple divulgue, selon un mode particulier de réalisation, une monture de forme polygonale dans laquelle le cadran est inséré en force, sous l'effet de quoi la monture se déforme et ses arrêtes viennent maintenir en place le cadran. L'ensemble formé par le cadran et la monture est ensuite disposé au-dessus du mouvement qui comprend une paroi circulaire saillante pour l'assemblage par emboîtement de l'ensemble cadran/monture.The document US 857,516 for example discloses, according to a particular embodiment, a polygonal frame in which the dial is inserted in force, under the effect of which the mount is deformed and its edges come to keep in place the dial. The group formed by the dial and the mount is then disposed above the movement which comprises a projecting circular wall for the assembly by interlocking the dial / mount assembly.

Un tel dispositif de maintien du cadran sur le mouvement de la montre se révèle toutefois peu fiable dans le temps. En effet, le cadran est maintenu en place uniquement par le biais de forces de friction, de sorte que des chocs appliqués à la montre peuvent provoquer un déplacement du cadran par rapport à sa position de référence.Such a device for keeping the dial on the movement of the watch is however unreliable over time. Indeed, the dial is held in place only by means of friction forces, so that shocks applied to the watch can cause a displacement of the dial relative to its reference position.

Le dispositif décrit dans le document US 5,966,344 permet de remédier à un tel inconvénient. Selon un premier mode de réalisation décrit dans ce document, une monture circulaire, fixée sur le mouvement, comprend sur sa périphérie des évidements destinés à recevoir en force des parties correspondantes du cadran. Le montage en force du cadran garantit que celui-ci ne peut se déplacer, même sous l'effet de chocs. Un tel mode de réalisation se révèle cependant peu esthétique dans le cas des montres squelettes, un jour étant en effet visible entre le cadran et la monture. Selon un autre mode de réalisation divulgué par le document US 5,966,344 , le mouvement de la montre comprend plusieurs trous ménagés à sa périphérie, les trous étant destinés à coopérer avec des pieds solidaires du cadran. Un tel dispositif implique également des opérations d'usinage complexes, le mouvement devant être percé et les pieds du cadran devant être faits d'une pièce avec le cadran.The device described in the document US 5,966,344 to overcome such a disadvantage. According to a first embodiment described in this document, a circular mount, fixed on the movement, comprises on its periphery recesses for receiving in force the corresponding parts of the dial. The forceful mounting of the dial ensures that it can not move, even under the effect of shocks. Such an embodiment is however unattractive in the case of skeleton watches, a day being indeed visible between the dial and the frame. According to another embodiment disclosed by the document US 5,966,344 , the movement of the watch comprises several holes formed at its periphery, the holes being intended to cooperate with feet secured to the dial. Such a device also involves complex machining operations, the movement to be drilled and the feet of the dial to be made of a piece with the dial.

Le document JP S54109576 divulgue une montre délimitée par une boîte formée d'un fond et d'une carrure, un mouvement d'horlogerie étant disposé dans un cercle d'encageage logé dans la boîte de montre, la montre comprenant également un cadran disposé sur le dessus du cercle d'encageage et maintenu au moyen d'un anneau de fixation, l'anneau de fixation présentant une section droite en forme de S, une branche supérieure de l'anneau de fixation étant en appui sur le cadran et une branche inférieure de l'anneau de fixation étant en appui sur le cercle d'encageage. Le dispositif décrit dans ce document comprend un jeu au dessus de la branche inférieure de l'anneau de fixation, la carrure ne pince pas l'anneau de fixation, et si c'était le cas, alors un jeu entre la branche supérieure et le cadran serait créé.The document JP S54109576 discloses a watch delimited by a box formed of a bottom and a middle part, a clockwork movement being arranged in a casing ring housed in the watch case, the watch also comprising a dial disposed on the top of the circle in which the fastening ring has a S-shaped cross-section, an upper branch of the fastening ring resting on the dial and a lower branch of the fastening ring. fixing ring being supported on the casing ring. The device described in this document comprises a clearance above the lower branch of the fixing ring, the middle part does not clamp the fixing ring, and if it was the case, then a clearance between the upper branch and the dial would be created.

Résumé de l'inventionSummary of the invention

La présente invention a notamment pour but de pallier les différents inconvénients des dispositifs connus de l'art antérieur.The present invention is intended in particular to overcome the various disadvantages of known devices of the prior art.

Plus précisément, un objectif de l'invention est de procurer un dispositif de fixation du cadran sur le mouvement qui soit simple à mettre en oeuvre et qui garantisse un bon maintien du cadran.More specifically, an object of the invention is to provide a device for fixing the dial on the movement which is simple to implement and which guarantees a good maintenance of the dial.

L'invention a également pour objectif de fournir un dispositif de fixation du cadran sur le mouvement qui soit robuste et peu coûteux.The invention also aims to provide a device for fixing the dial on the movement that is robust and inexpensive.

Ces objectifs, ainsi que d'autres qui apparaîtront plus clairement par la suite, sont atteints selon l'invention à l'aide d'une montre délimitée par une boîte formée d'un fond et d'une carrure, un mouvement étant disposé dans un cercle d'encageage logé dans la boîte de montre, la montre comprenant également un cadran disposé sur le dessus du cercle d'encageage et maintenu au moyen d'un anneau de fixation.These objectives, as well as others which will appear more clearly later, are achieved according to the invention with the aid of a watch delimited by a box formed of a bottom and a middle part, a movement being arranged in a casing ring housed in the watch case, the watch also comprising a dial disposed on the top of the casing ring and held by means of a fixing ring.

Selon l'invention, l'anneau de fixation présente une section droite en forme de « S », une branche supérieure du « S » étant en appui sur le cadran et une branche inférieure du « S » étant en appui sur le cercle d'encageage, la branche inférieure du « S » étant pincée entre la carrure et le cercle d'encageage, de façon à enserrer le cadran entre la branche supérieure du « S » et le cercle d'encageage.According to the invention, the fixing ring has a cross-section in the shape of an "S", an upper branch of the "S" resting on the dial and a lower branch of the "S" resting on the circle of The lower branch of the "S" is pinched between the middle and the casing ring, so as to enclose the dial between the upper branch of the "S" and the casing ring.

Selon des caractéristiques complémentaires de l'invention, prises seules ou en combinaison :

  • le cercle d'encageage comprend un épaulement périphérique extérieur sur lequel la branche inférieure du « S » prend appui ;
  • la carrure comprend une surface complémentaire de l'épaulement périphérique extérieur du cercle d'encageage, la branche inférieure du « S » étant pincée entre l'épaulement périphérique extérieur du cercle d'encageage et la surface complémentaire de la carrure lors du montage de la montre ;
  • le cercle d'encageage comprend un rebord périphérique sur lequel le cadran prend appui ;
  • la carrure comprend une rainure périphérique dans laquelle est logée la branche supérieure du « S » ;
  • des moyens de positionnement du cadran sur le cercle d'encageage sont prévus ;
  • les moyens de positionnement comprennent un ergot positionné sur le cercle d'encageage et une encoche ménagée dans le cadran, l'ergot venant se loger dans l'encoche de façon à bloquer la position radiale du cadran ;
  • l'anneau de fixation est réalisé d'un seul tenant dans un matériau métallique.
According to complementary features of the invention, taken alone or in combination:
  • the casing ring comprises an outer peripheral shoulder on which the lower branch of the "S"bears;
  • the middle part comprises a complementary surface of the outer peripheral shoulder of the casing ring, the lower branch of the "S" being clamped between the outer peripheral shoulder of the casing ring and the complementary surface of the middle part during assembly of the casing; watch;
  • the casing ring comprises a peripheral rim on which the dial bears;
  • the middle part comprises a peripheral groove in which is housed the upper branch of the "S";
  • means for positioning the dial on the casing ring are provided;
  • the positioning means comprise a lug positioned on the casing ring and a notch in the dial, the lug being received in the notch so as to block the radial position of the dial;
  • the fixing ring is made in one piece in a metallic material.

L'invention concerne également une montre comprenant un cadran transparent ou semi-transparent.The invention also relates to a watch comprising a transparent or semi-transparent dial.

Brève description des figuresBrief description of the figures

D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lecture de la description détaillée qui suit d'un exemple de réalisation de l'invention, cet exemple étant donné à titre purement illustratif et non limitatif seulement, en liaison avec le dessin annexé sur lequel :

  • la figure 1 est une vue en coupe d'une montre comprenant un dispositif de fixation d'un cadran conforme à l'invention, et
  • la figure 2 est une vue éclatée d'une montre recevant le dispositif de maintien du cadran conforme à l'invention.
Other features and advantages of the invention will emerge more clearly on reading the detailed description which follows of an example embodiment of the invention, this example being given purely by way of illustration and not limiting only, in connection with the attached drawing in which:
  • the figure 1 is a sectional view of a watch comprising a device for fixing a dial according to the invention, and
  • the figure 2 is an exploded view of a watch receiving the device for maintaining the dial according to the invention.

Description détaillée de l'inventionDetailed description of the invention

Désignée dans son ensemble par la référence numérique générale 1, la boîte de montre représentée à la figure 1 est délimitée par un fond 2 fixé par tout moyen approprié sur une carrure 4. Un mouvement d'horlogerie 6 est disposé dans un cercle d'encageage 8 logé dans la boîte de montre 1. Pour son positionnement axial, le mouvement d'horlogerie 6 comprend une collerette 10 qui prend appui sur un épaulement périphérique intérieur 12 du cercle d'encageage 8. La montre comprend également un cadran 14 disposé sur le dessus du cercle d'encageage 8 et maintenu au moyen d'un anneau de fixation 16 comme décrit plus en détail ci-après. Enfin, la boîte de montre 1 est fermée par le haut par une glace 18 fixée sur la carrure 4 avec interposition d'un joint d'étanchéité 20.Designated as a whole by the general reference numeral 1, the watch case shown in figure 1 is delimited by a bottom 2 fixed by any appropriate means on a caseband 4. A clockwork movement 6 is disposed in a casing ring 8 housed in the watch case 1. For its axial positioning, the watch movement 6 comprises a flange 10 which bears on an inner peripheral shoulder 12 of the casing circle 8. The watch also comprises a dial 14 disposed on the top of the casing ring 8 and held by means of a fixing ring 16 as described in more detail below. Finally, the watch case 1 is closed at the top by an ice-cream 18 fixed to the caseband 4 with the interposition of a seal 20.

Un orifice traversant 22 percé à travers le cercle d'encageage 8 est destiné à recevoir (voir figure 2) une tige 24 d'une couronne de mise à l'heure 26, ce qui permet d'assurer simultanément le positionnement axial et radial du mouvement d'horlogerie 6 à l'intérieur du cercle d'encageage 8.A through hole 22 pierced through the casing ring 8 is intended to receive (see FIG. figure 2 ) a rod 24 of a time setting ring 26, which simultaneously ensures the axial and radial positioning of the clockwork movement 6 inside the casing ring 8.

Selon une caractéristique de l'invention, le cercle d'encageage 8 est surmonté d'un rebord périphérique 28 sur lequel le cadran 14 prend appui. Comme on peut l'observer sur la figure 1, l'anneau de fixation 16, réalisé d'une pièce par exemple en métal, présente une section droite en forme de « S » formée d'une branche supérieure 16a et d'une branche inférieure 16c reliées entre elles par une branche intermédiaire 16b. La branche supérieure 16a de l'anneau de fixation 16 vient en appui sur tout ou partie de la périphérie du cadran 14, tandis que la branche inférieure 16c de l'anneau de fixation 16 vient en appui sur le cercle d'encageage 8. Plus précisément, le cercle d'encageage 8 comprend dans sa partie médiane un épaulement périphérique extérieur 30 sur lequel la branche inférieure 16c de l'anneau de fixation 16 prend appui. Enfin, la branche intermédiaire 16b de l'anneau de fixation 16 épouse les bords respectifs du cercle d'encageage 8 et du cadran 14, ce qui permet le centrage du cadran 14 par rapport au cercle d'encageage 8. Le diamètre intérieur de l'anneau de fixation 16 est réalisé avec un faible jeu par rapport au diamètre extérieur du cercle d'encageage 8, de façon que l'anneau de fixation 16 puisse s'emboîter sur le cercle d'encageage 8.According to one characteristic of the invention, the casing ring 8 is surmounted by a peripheral rim 28 on which the dial 14 bears. As can be seen on the figure 1 , the fastening ring 16, made in one piece for example of metal, has a cross-section in the form of an "S" formed of an upper branch 16a and a lower branch 16c interconnected by an intermediate branch 16b . The upper branch 16a of the fastening ring 16 bears on all or part of the periphery of the dial 14, while the lower branch 16c of the fastening ring 16 bears on the casing ring 8. More precisely, the casing ring 8 comprises in its median part an outer peripheral shoulder 30 on which the lower branch 16c of the fixing ring 16 bears. Finally, the intermediate branch 16b of the fixing ring 16 matches the respective edges of the casing ring 8 and the dial 14, which allows the dial 14 to be centered with respect to the casing ring 8. The internal diameter of the casing The fixing ring 16 is made with a slight clearance with respect to the outside diameter of the casing ring 8, so that the fixing ring 16 can fit on the casing ring 8.

Selon une autre caractéristique de l'invention, la carrure 4 comprend intérieurement une surface 32 complémentaire de l'épaulement périphérique extérieur 30 du cercle d'encageage 8, la branche inférieure 16c de l'anneau de fixation 16 étant pincée entre l'épaulement périphérique extérieur 30 du cercle d'encageage 8 et la surface complémentaire 32 de la carrure 4 lors du montage de la montre. Sous l'effet de ce pincement, la branche supérieure 16a de l'anneau de fixation 16 plaque le cadran 14 contre le rebord périphérique 28 du cercle d'encageage 8, garantissant le parfait maintien du cadran 14. Pour que cela soit possible, la hauteur de la branche intermédiaire 16b de l'anneau de fixation 16 est légèrement inférieure à la somme des épaisseurs du cadran 14 et du rebord périphérique 28 du cercle d'encageage 8.According to another characteristic of the invention, the caseband 4 internally comprises a surface 32 complementary to the outer peripheral shoulder 30 of the casing ring 8, the lower branch 16c of the fixing ring 16 being clamped between the shoulder external device 30 of the casing circle 8 and the complementary surface 32 of the middle part 4 during assembly of the watch. Under the effect of this pinch, the upper branch 16a of the fixing ring 16 plates the dial 14 against the peripheral rim 28 of the casing ring 8, ensuring the perfect maintenance of the dial 14. For this to be possible, the height of the intermediate branch 16b of the fixing ring 16 is slightly less than the sum of the thicknesses of the dial 14 and the peripheral rim 28 of the casing ring 8.

On notera que la carrure 4 comprend intérieurement une rainure périphérique 34 qui forme un dégagement dans lequel est logée avec jeu la branche supérieure 16a de l'anneau de fixation 16 et qui est délimitée par un bord extérieur 36 prenant appui sur le cadran 14. La largeur de la rainure périphérique 34 est légèrement supérieure à celle de la branche supérieure 16a de l'anneau de fixation 16 de façon à faciliter l'assemblage. On veille cependant à ce que le bord extérieur 36 de la rainure périphérique 34 soit aussi mince que possible de façon à maximiser la surface visible du cadran 14.It will be noted that the caseband 4 internally comprises a peripheral groove 34 which forms a clearance in which is housed with clearance the upper branch 16a of the fastening ring 16 and which is delimited by an outer edge 36 bearing on the dial 14. width of the peripheral groove 34 is slightly greater than that of the upper branch 16a of the fastening ring 16 so as to facilitate assembly. However, it is ensured that the outer edge 36 of the peripheral groove 34 is as thin as possible so as to maximize the visible surface of the dial 14.

Deux rainures circulaires complémentaires 38a et 38b sont ménagées respectivement à la base de la carrure 4 et du cercle d'encageage 8. Lorsque le cercle d'encageage 8 à l'intérieur duquel est logé le mouvement d'horlogerie 6 est introduit dans la boîte de montre 1, la réunion des deux rainures circulaires 38a et 38b forme une gorge dans laquelle est placé un joint d'étanchéité 40. Lorsque le fond 2 est fixé, par exemple par vissage, sur la carrure 4, le joint d'étanchéité 40 se comprime et se déforme et exerce sur le cercle d'encageage 8 une poussée verticale dirigée vers le haut. Sous l'effet de cette poussée, l'épaulement périphérique extérieur 30 du cercle d'encageage 8 presse la branche inférieure 16c de l'anneau de fixation 16 contre la surface complémentaire 32 de la carrure 4. Sous l'effet de ce pincement, la branche supérieure 16a de l'anneau de fixation 16 plaque le cadran 14 contre le rebord périphérique 28 du cercle d'encageage 8.Two complementary circular grooves 38a and 38b are formed respectively at the base of the middle part 4 and the casing circle 8. When the casing ring 8 inside which is housed the clockwork movement 6 is introduced into the box 1, the combination of the two circular grooves 38a and 38b forms a groove in which is placed a seal 40. When the bottom 2 is fixed, for example by screwing on the middle 4, the seal 40 is compressed and deformed and exerts on the casing ring 8 a vertical thrust directed upwards. Under the effect of this thrust, the outer peripheral shoulder 30 of the casing ring 8 presses the lower leg 16c of the fixing ring 16 against the complementary surface 32 of the caseband 4. Under the effect of this nipping, branch upper 16a of the fixing ring 16 plates the dial 14 against the peripheral rim 28 of the casing ring 8.

Lors de l'assemblage de la boîte de montre 1, le mouvement d'horlogerie 6 est introduit par le haut dans le cercle d'encageage 8, après quoi le cadran 14 et l'anneau de fixation 16 sont posés sur le dessus du cercle d'encageage 8. L'ensemble résultant est ensuite glissé depuis le fond 2 dans le volume intérieur de la boîte de montre 1. Finalement, le fond 2 est fixé sur la carrure 4 de la montre.During the assembly of the watch case 1, the clockwork movement 6 is introduced from above into the casing ring 8, after which the dial 14 and the fixing ring 16 are placed on the top of the circle. 8. The resulting assembly is then slid from the bottom 2 into the interior volume of the watch case 1. Finally, the bottom 2 is fixed on the middle part 4 of the watch.

Un tel montage assure ainsi une fixation du cadran 14 de manière simple et efficace sans avoir à utiliser de pieds de cadran.Such an assembly thus ensures a fixing of the dial 14 in a simple and effective manner without having to use dial feet.

Un tel montage est donc particulièrement intéressant pour les montres présentant un cadran transparent ou semi-transparent. Bien entendu, ce montage peut également être utilisé avec des montres présentant un cadran opaque.Such an assembly is particularly interesting for watches with a transparent or semi-transparent dial. Of course, this assembly can also be used with watches having an opaque dial.

Selon une variante de réalisation de l'invention illustrée sur la figure 2, la boîte de montre 1 comprend des moyens de positionnement radial du cadran 14 relativement au cercle d'encageage 8. Ces moyens de positionnement peuvent comprendre, par exemple, un ergot de guidage 42 positionné sur le cercle d'encageage 8 et une encoche 42 ménagée dans le cadran 14, l'ergot de guidage 40 étant destiné à pénétrer dans l'encoche 44 de façon à assurer le positionnement angulaire du cadran 14. Bien entendu, tout autre moyen de positionnement connu de l'homme du métier peut convenir pour le positionnement du cadran 14.According to an alternative embodiment of the invention illustrated on the figure 2 , the watch case 1 comprises means for radial positioning of the dial 14 relative to the casing ring 8. These positioning means may comprise, for example, a guide pin 42 positioned on the casing ring 8 and a notch 42 arranged in the dial 14, the guide pin 40 being intended to penetrate the notch 44 so as to ensure the angular positioning of the dial 14. Of course, any other positioning means known to those skilled in the art may be suitable for the positioning of the dial 14.

Il va de soi que la présente invention n'est pas limitée au mode de réalisation qui vient d'être décrit et que diverses modifications et variantes simples de l'invention peuvent être envisagées par l'homme du métier sans sortir du cadre de l'invention tel que défini par les revendications annexées. En particulier, selon une variante non représentée au dessin, le cercle d'encageage 8 est muni à intervalles de distance réguliers le long de sa base de lames élastiques qui exercent sur lui une force de rappel élastique verticale vers le haut. Sous l'effet de cette force, le cercle d'encageage 8 pince la branche inférieure 16c de l'anneau de fixation 16 contre la carrure 4. Un autre mode de fixation encore du cercle d'encageage 8 consiste à visser celui-ci sur le fond 2 de la boîte de montre 1.It goes without saying that the present invention is not limited to the embodiment which has just been described and that various modifications and simple variants of the invention can be envisaged by those skilled in the art without departing from the scope of the present invention. invention as defined by the appended claims. In particular, according to a variant not shown in the drawing, the casing ring 8 is provided at regular distance intervals along its base of elastic blades which exert on it an elastic restoring force. vertical upward. Under the effect of this force, the casing ring 8 clamps the lower branch 16c of the fastening ring 16 against the caseband 4. Another method of fixing still the casing ring 8 is to screw it on the bottom 2 of the watch case 1.

Claims (11)

  1. Watch delimited by a case (1) formed of a back cover (2) and of a middle part (4), a timepiece movement (6) being disposed in a casing ring (8) housed inside the watch case (1), the watch also including a dial (14) disposed on top of the casing ring (8) and held by means of a fixing ring (16), characterized in that the fixing ring (16) has an S-shaped cross-section, an upper branch (16a) of the fixing ring (16) being supported on the dial (14), and a lower branch (16c) of the fixing ring (16) being supported on the casing ring (8), the lower branch (16c) of the fixing ring (16) being clamped between the middle part (4) and the casing ring (8), so as to grip the dial (14) between the upper branch (16a) of the fixing ring (16) and the casing ring (8).
  2. Watch according to claim 1, characterized in that the casing ring (8) includes a peripheral rim (28) on which the dial (14) is supported.
  3. Watch according to claim 2, characterized in that the upper branch (16a) and the lower branch (16c) of the fixing ring (16) are connected to each other by an intermediate branch (16b) whose height is lower than the sum of the thicknesses of the dial (14) and of the peripheral rim (28) of the casing ring (8).
  4. Watch according to any of claims 1 to 3, characterized in that the casing ring (8) includes an outer peripheral shoulder on which the lower branch (16c) of the fixing ring (16) is supported.
  5. Watch according to claim 4, characterized in that the middle part (4) includes internally a surface (32) complementary to the outer peripheral shoulder (30) of the casing ring (8), the lower branch (16c) of the fixing ring (16) being clamped between the outer peripheral shoulder (30) of the casing ring (8) and the complementary surface (32) of the middle part (4).
  6. Watch according to any of claims 1 to 5, characterized in that the middle part (4) includes internally a peripheral groove (34) which forms a recess which houses the upper branch (16a) of the fixing ring (16) with some play and which is delimited by an outer edge (36) supported on the dial (14).
  7. Watch according to any of claims 1 to 6, characterized in that the two complementary circular grooves (38a, 38b) are arranged respectively at the base of the middle part (4) and of the casing ring (8) so that, when the casing ring (8), which houses the timepiece movement (6), is inserted into the watch case (1), the joining of the two circular grooves (38a, 38b) forms a groove in which a sealing gasket (38) is placed.
  8. Watch according to any of claims 1 to 7, characterized in that means of positioning the dial (14) on the casing ring (8) are provided.
  9. Watch according to claim 8, characterized in that the positioning means include a guide lug (40) positioned on the casing ring (8) and a notch (42) arranged in the dial (14), the guide lug (40) penetrating the notch (42) so as to ensure the angular positioning of the dial (14).
  10. Watch according to any of claims 1 to 9, characterized in that the fixing ring (16) is made in one-piece in a metallic material.
  11. Watch according to any of claims 1 to 10, characterized in that the dial (14) is transparent or semi-transparent.
EP14152378.7A 2014-01-24 2014-01-24 Device for attaching a timepiece dial Active EP2899597B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP14152378.7A EP2899597B1 (en) 2014-01-24 2014-01-24 Device for attaching a timepiece dial
US14/546,164 US9535403B2 (en) 2014-01-24 2014-11-18 Device for securing a timepiece dial
JP2014248743A JP5990561B2 (en) 2014-01-24 2014-12-09 Device for fixing the timepiece front panel
CN201510030225.6A CN104808472B (en) 2014-01-24 2015-01-21 Device for fixing timepiece dial
HK16100561.1A HK1212787A1 (en) 2014-01-24 2016-01-19 Device for securing a timepiece dial

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14152378.7A EP2899597B1 (en) 2014-01-24 2014-01-24 Device for attaching a timepiece dial

Publications (2)

Publication Number Publication Date
EP2899597A1 EP2899597A1 (en) 2015-07-29
EP2899597B1 true EP2899597B1 (en) 2016-06-22

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EP14152378.7A Active EP2899597B1 (en) 2014-01-24 2014-01-24 Device for attaching a timepiece dial

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US (1) US9535403B2 (en)
EP (1) EP2899597B1 (en)
JP (1) JP5990561B2 (en)
CN (1) CN104808472B (en)
HK (1) HK1212787A1 (en)

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EP3489764B1 (en) * 2017-11-28 2021-05-26 Omega SA Arrangement for fragile dial
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EP3968099A1 (en) * 2020-09-15 2022-03-16 Omega SA System for securing a timepiece movement in a watch case

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Also Published As

Publication number Publication date
JP2015138025A (en) 2015-07-30
HK1212787A1 (en) 2016-06-17
US9535403B2 (en) 2017-01-03
CN104808472A (en) 2015-07-29
JP5990561B2 (en) 2016-09-14
US20150212491A1 (en) 2015-07-30
EP2899597A1 (en) 2015-07-29
CN104808472B (en) 2017-05-31

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