EP2720093B1 - System for connecting a bracelet to a watch case - Google Patents

System for connecting a bracelet to a watch case Download PDF

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Publication number
EP2720093B1
EP2720093B1 EP12188014.0A EP12188014A EP2720093B1 EP 2720093 B1 EP2720093 B1 EP 2720093B1 EP 12188014 A EP12188014 A EP 12188014A EP 2720093 B1 EP2720093 B1 EP 2720093B1
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EP
European Patent Office
Prior art keywords
watch case
bracelet
hollow element
link
hollow
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
EP12188014.0A
Other languages
German (de)
French (fr)
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EP2720093A1 (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 EP12188014.0A priority Critical patent/EP2720093B1/en
Priority to US13/940,689 priority patent/US9004750B2/en
Priority to JP2013170978A priority patent/JP5758959B2/en
Priority to CN201310469612.0A priority patent/CN103720141B/en
Publication of EP2720093A1 publication Critical patent/EP2720093A1/en
Priority to HK14110238.5A priority patent/HK1196757A1/en
Application granted granted Critical
Publication of EP2720093B1 publication Critical patent/EP2720093B1/en
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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
    • G04B37/14—Suspending devices, supports or stands for time-pieces insofar as they form part of the case
    • G04B37/1486—Arrangements for fixing to a bracelet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/47—Strap-end-attaching devices
    • Y10T24/4782—Watch strap

Definitions

  • the present invention relates to a system for connecting a bracelet to a watch case comprising dressing elements made of a hard material such as a ceramic. More specifically, the present invention relates to a link provided for connecting a bracelet to a case of a watch, this link comprising a first hollow element and a second element embedded in the first element, the first hollow element carrying first fastening means to housing and the second member carrying second means for attachment to an adjacent link of the bracelet.
  • the invention relates to the field of wristwatches made of a hard material such as ceramics and intended to be assembled on watches whose housing comprises a covering made of hard material.
  • the cladding parts of hard materials are obtained by processes comprising a molding step followed by a sintering step. During the sintering operation, these parts are subject to a shrinkage phenomenon, that is to say they undergo a significant reduction in their volume under the combined actions of heat and pressure. . This shrinkage phenomenon can represent more than 30% of the initial volume of the pieces.
  • the processes currently used currently make it possible to manufacture such parts with tolerances on the dimensions which are of the order of 0.5 to 1%, the sintering step making it difficult to obtain lower tolerances. It can be noted that these tolerances fluctuate according to the batches of raw material used.
  • the manufacturing tolerances brought into play by the sintering operations may result in an uncertainty of the order of 0.2 mm over the length of a 3 cm ceramic watch case. Since ceramic watches are in the high-end range of watchmaking, such uncertainties are difficult for manufacturers to accept.
  • the most commonly adopted solution to make up the gaps between the various ceramic elements used to make the watches is to carry out a manual machining after the sintering step.
  • the manual machining steps have become more and more laborious in view of the number of parts to be processed.
  • the manual machining steps are made all the more difficult as the complexity of the geometry of the watch boxes constantly grows.
  • the document FR 2,713,358 discloses a system for connecting a bracelet to a watch case by means of a link.
  • the present invention aims to overcome the disadvantages mentioned above as well as others by providing timepieces with improved aesthetics.
  • the present invention relates to a system for connecting a bracelet to a watch case by means of a link, the watch case having a middle part and a bottom, the link comprising a first hollow member and a second member partly embedded in the first hollow member, the first hollow member having first means for attachment to the watch case and the second member having second means for attachment to an adjacent link of the bracelet, characterized in that the watch case comprises a mechanical device arranged to rotate the first hollow element about an axis transverse to the longitudinal direction of the bracelet and to press the first hollow element against the watch case.
  • the present invention provides a system for connecting a bracelet to a watch case by means of a link which makes it possible to adjust the position of the bracelet with respect to the watch case. It is thus possible to overcome the problems inherent in manufacturing tolerances and to obtain an uninterrupted junction between the bracelet and the watch case without having to manually resume the trim parts, which is advantageous from the aesthetic point of view and economic.
  • the present invention proceeds from the general inventive idea of providing a system for connecting a bracelet to a watch case by means of a link, this system comprising means which allow the link to come against the watch case.
  • FIG. 1 a wristwatch according to the prior art designated as a whole by the general reference numeral 1.
  • This wristwatch 1 comprises a bracelet 2 ceramic connected to a watch case 4 also made of ceramic.
  • games, noted d1 and d2 are apparent at the junction between the watch case 4 and the first links 6 of the bracelet 2.
  • these sets d1 and d2 come from manufacturing tolerances of the watch case 4 and the links 6 of the bracelet 2.
  • the manufacturing tolerances induce dimensional variations of the different elements of dressing, which causes the appearance of discontinuities at the junction between the bracelet 2 and the watch case 4. These discontinuities are unsightly, if only because they reveal the fastening means 8 bracelet 2 on the watch case 4.
  • the present invention solves this problem by providing a link having a particular structure to establish the mechanical connection without play between the bracelet and the watch case.
  • the figure 2 is a sectional view along the median axis of the bracelet of the terminal link that connects the bracelet to the watch case and the figure 3 is a perspective and exploded view of the mechanical device that brings closer to the watch case the link provided to connect the bracelet to the watch case.
  • the link according to the invention comprises a first hollow element 12 and a second element 14 partially embedded in the first hollow element 12.
  • This link 10 is intended to connect a bracelet, the first of which link 16 is shown in the drawing to a cladding element which at least partially defines a watch case 18.
  • the watch case 18 comprises a middle part 20 extended in the longitudinal direction of the bracelet by horns 22 each pierced by a hole 24
  • the watch case 18 is classically bounded downwards by a bottom 26.
  • the first hollow element 12 carries first fixing means 28 to the watch case 18 and the second element 14 carries second fastening means 30 to the adjacent link 16 of the bracelet.
  • the second element 14 is in the form of a plate 32 of generally rectangular shape which, on the side of the watch case 18, is provided with a hollow cylindrical hinge 34 allowing the passage of a fixing pin 36 whose role will be described below and which, on the side of the bracelet, is provided with fastening means 16 to the adjacent link of the current type such as hinges 38 used in combination with a bar (not shown) of the current type also.
  • the first hollow element 12 forms an envelope of substantially trapezoidal cross-section delimited by a front face 40, a rear face 42 and two lateral faces 44.
  • a housing 46 is formed in the first hollow element 12. This housing 46 passes through the first hollow element 12 from one side to the other and opens at the front of the side of the front face 40 and at the rear of the side of the rear face 42 of the first hollow element. 12. The housing 46 is dimensioned so that the hinges 38 of the plate 32 protrude from the first hollow element 12.
  • first fastening means 28 of the first hollow element 12 to watch case 18 include a bore 48 which opens into the housing 46 and which is formed in the side faces 44 of the first hollow member 12, transversely to the longitudinal direction of the bracelet. This bore 48 is provided to receive the fixing pin 36.
  • the profile of the front face 40 of the first hollow element 12 matches the contour of the middle part of the watch case 18.
  • the second element is first inserted 14 in the first hollow element 12 so that the hinges 38 of the wafer 32 protrude from the first hollow element 12.
  • the first hollow element 12 is slipped between the horns 22 of the watch case 18.
  • the holes 24 made in the horns 22, the bore 48 machined in the first hollow element 12 and the hollow cylindrical hinge 34 are all aligned.
  • the fixing pin 36 has, at one of its ends, an increase of diameter 50 and at its other end a tapped hole for screwing a screw 52 which makes it possible to block the fixing pin 36.
  • the assembly is completed by a mechanical adjustment device comprising one and, preferably, two adjusting screws 54.
  • These adjustment screws 54 are each screwed into a threaded hole 56 formed in the lower face 58 of the bottom 26 located on the wrist side of the wrist. the user.
  • These screws 54 comprise a head 60 embedded in the lower face 58 of the bottom 26 of the watch case 18 and extended by a threaded rod 62.
  • the screws cooperate by their head 60 with a surface 64 of complementary shape formed in the first hollow element 12 as described below.
  • the procedure is as follows. Access to the adjusting screw 54 via the threaded hole 56 which opens into the lower face 58 of the bottom 26 of the watch case 18.
  • the adjusting screw 54 is screwed so that it is translated from bottom to top according to the arrow A in the tapped hole 56.
  • the adjusting screw 54 presses on the facing surface 64 formed in the first hollow element 12 so as to pivot this first hollow element 12 in the opposite direction of the clockwise according to the arrow B. By pivoting in this way, the first hollow member 12 approaches the watch case 18.
  • the adjusting screw 54 is stopped from being screwed when the front face 40 of the first hollow element 12 matches the outline of the middle part of the box. 18. It will be understood that by more or less screwing the adjusting screw 54, this makes it possible to very precisely adjust the position of the first hollow element 12 with respect to the middle part of the watch case 18. In addition, the setting is captive.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Adornments (AREA)
  • Electric Clocks (AREA)
  • Ceramic Products (AREA)
  • Chain Conveyers (AREA)

Description

La présente invention concerne un système pour relier un bracelet à un boîtier de montre comportant des éléments d'habillage réalisés en un matériau dur tel qu'une céramique. Plus précisément, la présente invention concerne un maillon prévu pour relier un bracelet à un boîtier d'une montre, ce maillon comprenant un premier élément creux et un second élément imbriqué dans le premier élément, le premier élément creux portant des premiers moyens de fixation au boîtier et le second élément portant des seconds moyens de fixation à un maillon adjacent du bracelet.The present invention relates to a system for connecting a bracelet to a watch case comprising dressing elements made of a hard material such as a ceramic. More specifically, the present invention relates to a link provided for connecting a bracelet to a case of a watch, this link comprising a first hollow element and a second element embedded in the first element, the first hollow element carrying first fastening means to housing and the second member carrying second means for attachment to an adjacent link of the bracelet.

Très généralement, l'invention concerne le domaine des bracelets de montre réalisés en un matériau dur tel que la céramique et destinés à être assemblés sur des montres dont le boîtier comporte un habillage en matériau dur.Very generally, the invention relates to the field of wristwatches made of a hard material such as ceramics and intended to be assembled on watches whose housing comprises a covering made of hard material.

De telles structures présentent certaines limites dans leurs applications en raison même de leurs techniques de fabrication. En effet, les pièces d'habillage en matériaux durs, par exemple en céramique, sont obtenues par des procédés comportant une étape de moulage suivie d'une étape de frittage. Au cours de l'opération de frittage, ces pièces sont l'objet d'un phénomène de retrait, c'est-à-dire qu'elles subissent une réduction importante de leur volume sous les actions combinées de la chaleur et de la pression. Ce phénomène de retrait peut représenter plus de 30% du volume initial des pièces. Les procédés couramment mis en oeuvre permettent actuellement de fabriquer de telles pièces avec des tolérances sur les dimensions qui sont de l'ordre de 0.5 à 1%, l'étape de frittage rendant difficile l'obtention de tolérances plus faibles. On peut noter que ces tolérances fluctuent en fonction des lots de matière première utilisés.Such structures have certain limitations in their applications because of their manufacturing techniques. Indeed, the cladding parts of hard materials, for example ceramic, are obtained by processes comprising a molding step followed by a sintering step. During the sintering operation, these parts are subject to a shrinkage phenomenon, that is to say they undergo a significant reduction in their volume under the combined actions of heat and pressure. . This shrinkage phenomenon can represent more than 30% of the initial volume of the pieces. The processes currently used currently make it possible to manufacture such parts with tolerances on the dimensions which are of the order of 0.5 to 1%, the sintering step making it difficult to obtain lower tolerances. It can be noted that these tolerances fluctuate according to the batches of raw material used.

A titre d'exemple, les tolérances de fabrication mises en jeu par les opérations de frittage peuvent se traduire par une incertitude de l'ordre de 0.2 mm sur la longueur d'une boîte de montre en céramique de 3 centimètres. Etant donné que les montres en céramique se situent dans le domaine haut de gamme de la production horlogère, de telles incertitudes sont difficilement acceptables par les fabricants.By way of example, the manufacturing tolerances brought into play by the sintering operations may result in an uncertainty of the order of 0.2 mm over the length of a 3 cm ceramic watch case. Since ceramic watches are in the high-end range of watchmaking, such uncertainties are difficult for manufacturers to accept.

Pour remédier à ce problème, la solution la plus couramment retenue pour rattraper les jeux entre les divers éléments en céramique utilisés pour réaliser les montres consiste à procéder à un usinage manuel après l'étape de frittage. Toutefois, devant la demande croissante des clients pour des pièces d'horlogerie en céramique, les étapes d'usinage manuel sont devenues de plus en plus laborieuses au vu du nombre de pièces à traiter. En outre, les étapes d'usinage manuel sont rendues d'autant plus difficiles que la complexité de la géométrie des boîtes de montres croît sans cesse.To remedy this problem, the most commonly adopted solution to make up the gaps between the various ceramic elements used to make the watches is to carry out a manual machining after the sintering step. However, in the face of increasing customer demand for ceramic timepieces, the manual machining steps have become more and more laborious in view of the number of parts to be processed. In addition, the manual machining steps are made all the more difficult as the complexity of the geometry of the watch boxes constantly grows.

Le document FR 2 713 358 divulgue un système pour relier un bracelet à un boîtier de montre au moyen d'un maillon.The document FR 2,713,358 discloses a system for connecting a bracelet to a watch case by means of a link.

On notera que le problème des tolérances mises en jeu par les opérations de frittage est d'autant plus gênant que les dimensions des pièces d'habillage à fabriquer sont importantes. En particulier, ces tolérances de fabrication ont une incidence néfaste sur les boîtes de montres dont les dimensions sont généralement supérieures à celles des maillons de bracelet. On comprendra également que plus les fabricants de montres en céramique souhaitent réaliser des maillons de bracelet de grandes dimensions, plus ils ont de difficultés à réaliser des jonctions entre la boîte de montre et le bracelet ou entre les maillons du bracelet présentant une esthétique satisfaisante.It should be noted that the problem of tolerances brought into play by sintering operations is all the more troublesome since the dimensions of the parts to be manufactured are important. In particular, these manufacturing tolerances have a detrimental effect on the watch cases whose dimensions are generally greater than those of the bracelet links. It will also be understood that the more ceramic watch manufacturers wish to make large bracelet links, the more difficult they are to make junctions between the watch case and the bracelet or between the links of the bracelet having a satisfactory aesthetic.

La présente invention a pour but de remédier aux inconvénients mentionnés ci-dessus ainsi qu'à d'autres encore en procurant des pièces d'horlogerie présentant une esthétique améliorée.The present invention aims to overcome the disadvantages mentioned above as well as others by providing timepieces with improved aesthetics.

A cet effet, la présente invention concerne un système pour relier un bracelet à un boîtier de montre au moyen d'un maillon, le boîtier de montre comportant une carrure et un fond, le maillon comportant un premier élément creux et un second élément en partie imbriqué dans le premier élément creux, le premier élément creux portant des premiers moyens de fixation au boîtier de montre et le second élément portant des seconds moyens de fixation à un maillon adjacent du bracelet, caractérisé en ce que le boîtier de montre comporte un dispositif mécanique agencé pour faire pivoter le premier élément creux autour d'un axe transversal à la direction longitudinale du bracelet et pour plaquer ce premier élément creux contre le boîtier de montre.For this purpose, the present invention relates to a system for connecting a bracelet to a watch case by means of a link, the watch case having a middle part and a bottom, the link comprising a first hollow member and a second member partly embedded in the first hollow member, the first hollow member having first means for attachment to the watch case and the second member having second means for attachment to an adjacent link of the bracelet, characterized in that the watch case comprises a mechanical device arranged to rotate the first hollow element about an axis transverse to the longitudinal direction of the bracelet and to press the first hollow element against the watch case.

Grâce à ces caractéristiques, la présente invention procure un système pour relier un bracelet à un boîtier de montre au moyen d'un maillon qui permet d'ajuster la position du bracelet par rapport à la boîte de montre. Il est ainsi possible de remédier aux problèmes inhérents aux tolérances de fabrication et d'obtenir une jonction ininterrompue entre le bracelet et la boîte de montre sans être obligé de reprendre manuellement les pièces d'habillage, ce qui est avantageux du point de vue esthétique et économique.Thanks to these characteristics, the present invention provides a system for connecting a bracelet to a watch case by means of a link which makes it possible to adjust the position of the bracelet with respect to the watch case. It is thus possible to overcome the problems inherent in manufacturing tolerances and to obtain an uninterrupted junction between the bracelet and the watch case without having to manually resume the trim parts, which is advantageous from the aesthetic point of view and economic.

D'autres caractéristiques et avantages de la présente invention ressortiront plus clairement de la description détaillée qui suit d'un mode de réalisation d'un maillon selon 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 d'une montre-bracelet selon l'art antérieur ;
  • la figure 2 est une vue en coupe selon l'axe médian du bracelet du maillon terminal qui permet de relier le bracelet à la boîte de montre, et
  • la figure 3 est une vue en perspective et en éclaté du dispositif mécanique qui permet de rapprocher de la boîte de montre le maillon prévu pour relier le bracelet à la boîte de montre.
Other features and advantages of the present invention will emerge more clearly from the detailed description which follows of an embodiment of a link according to 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 view of a wristwatch according to the prior art;
  • the figure 2 is a sectional view along the median axis of the bracelet of the terminal link which connects the bracelet to the watch case, and
  • the figure 3 is a perspective and exploded view of the mechanical device that brings closer to the watch case the link provided to connect the bracelet to the watch case.

La présente invention procède de l'idée générale inventive qui consiste à procurer un système pour relier un bracelet à un boîtier de montre au moyen d'un maillon, ce système comprenant des moyens qui permettent au maillon de venir se plaquer contre la boîte de montre. En ayant la possibilité de rapprocher le maillon terminal du bracelet de la boîte de montre, on peut compenser les jeux éventuels entre le bracelet et la boîte de montre inhérents à la technique de fabrication par frittage et obtenir une jonction ininterrompue entre le bracelet et la boîte de montre, ce qui est très avantageux du point de vue esthétique.The present invention proceeds from the general inventive idea of providing a system for connecting a bracelet to a watch case by means of a link, this system comprising means which allow the link to come against the watch case. By having the possibility of bringing the terminal link of the wristband to the watch case, it is possible to compensate for any gaps between the bracelet and the watch case inherent to the sintering technique and to obtain an uninterrupted connection between the bracelet and the box. of watch, which is very advantageous from the aesthetic point of view.

On a représenté sur la figure 1 une montre-bracelet selon l'art antérieur désignée dans son ensemble par la référence numérique générale 1. Cette montre-bracelet 1 comprend un bracelet 2 en céramique relié à une boîte de montre 4 elle aussi réalisée en céramique. On constate sur la figure 1 que, de part et d'autre de la boîte de montre 4, des jeux, notés d1 et d2, sont apparents au niveau de la jonction entre la boîte de montre 4 et les premiers maillons 6 du bracelet 2.We have shown on the figure 1 a wristwatch according to the prior art designated as a whole by the general reference numeral 1. This wristwatch 1 comprises a bracelet 2 ceramic connected to a watch case 4 also made of ceramic. We see on the figure 1 that, on both sides of the watch case 4, games, noted d1 and d2, are apparent at the junction between the watch case 4 and the first links 6 of the bracelet 2.

Comme expliqué dans la partie introductive de la présente demande de brevet, ces jeux d1 et d2 proviennent des tolérances de fabrication de la boîte de montre 4 et des maillons 6 du bracelet 2. En effet, les tolérances de fabrication induisent des variations dimensionnelles des différents éléments d'habillage, ce qui provoque l'apparition de discontinuités au niveau de la jonction entre le bracelet 2 et la boîte de montre 4. Ces discontinuités sont inesthétiques, ne serait-ce que parce qu'elles laissent apparaître les moyens de fixation 8 du bracelet 2 sur la boîte de montre 4.As explained in the introductory part of the present patent application, these sets d1 and d2 come from manufacturing tolerances of the watch case 4 and the links 6 of the bracelet 2. In fact, the manufacturing tolerances induce dimensional variations of the different elements of dressing, which causes the appearance of discontinuities at the junction between the bracelet 2 and the watch case 4. These discontinuities are unsightly, if only because they reveal the fastening means 8 bracelet 2 on the watch case 4.

La présente invention permet de résoudre ce problème en procurant un maillon présentant une structure particulière pour établir la connexion mécanique sans jeu entre le bracelet et la boîte de montre.The present invention solves this problem by providing a link having a particular structure to establish the mechanical connection without play between the bracelet and the watch case.

La figure 2 est une vue en coupe selon l'axe médian du bracelet du maillon terminal qui permet de relier le bracelet à la boîte de montre et la figure 3 est une vue en perspective et en éclaté du dispositif mécanique qui permet de rapprocher de la boîte de montre le maillon prévu pour relier le bracelet à la boîte de montre.The figure 2 is a sectional view along the median axis of the bracelet of the terminal link that connects the bracelet to the watch case and the figure 3 is a perspective and exploded view of the mechanical device that brings closer to the watch case the link provided to connect the bracelet to the watch case.

Désigné dans son ensemble par la référence numérique générale 10, le maillon selon l'invention comprend un premier élément creux 12 et un second élément 14 en partie imbriqué dans le premier élément creux 12. Ce maillon 10 est prévu pour relier un bracelet dont le premier maillon 16 est représenté au dessin à un élément d'habillage qui définit au moins partiellement une boîte de montre 18. La boîte de montre 18 comprend une carrure 20 prolongée dans la direction longitudinale du bracelet par des cornes 22 percées chacune d'un trou 24. La boîte de montre 18 est classiquement délimitée vers le bas par un fond 26.Designated as a whole by the general reference numeral 10, the link according to the invention comprises a first hollow element 12 and a second element 14 partially embedded in the first hollow element 12. This link 10 is intended to connect a bracelet, the first of which link 16 is shown in the drawing to a cladding element which at least partially defines a watch case 18. The watch case 18 comprises a middle part 20 extended in the longitudinal direction of the bracelet by horns 22 each pierced by a hole 24 The watch case 18 is classically bounded downwards by a bottom 26.

Conformément à l'invention, le premier élément creux 12 porte des premiers moyens de fixation 28 à la boîte de montre 18 et le second élément 14 porte des seconds moyens de fixation 30 au maillon adjacent 16 du bracelet. Plus précisément, le second élément 14 se présente sous la forme d'une plaquette 32 de forme généralement rectangulaire qui, du côté de la boîte de montre 18, est munie d'une charnière cylindrique creuse 34 permettant le passage d'un axe de fixation 36 dont le rôle sera décrit ci-dessous et qui, du côté du bracelet, est munie de moyens de fixation au maillon adjacent 16 de type courant tels que des gonds 38 utilisés en combinaison avec une barrette (non représentée) de type courant également.According to the invention, the first hollow element 12 carries first fixing means 28 to the watch case 18 and the second element 14 carries second fastening means 30 to the adjacent link 16 of the bracelet. More specifically, the second element 14 is in the form of a plate 32 of generally rectangular shape which, on the side of the watch case 18, is provided with a hollow cylindrical hinge 34 allowing the passage of a fixing pin 36 whose role will be described below and which, on the side of the bracelet, is provided with fastening means 16 to the adjacent link of the current type such as hinges 38 used in combination with a bar (not shown) of the current type also.

Le premier élément creux 12 forme une enveloppe de section droite sensiblement trapézoïdale délimitée par une face frontale 40, une face postérieure 42 et deux faces latérales 44. Afin de pouvoir glisser le second élément 14 à l'intérieur de cette enveloppe, un logement 46 est ménagé dans le premier élément creux 12. Ce logement 46 traverse le premier élément creux 12 de part en part et débouche à l'avant du côté de la face frontale 40 et à l'arrière du côté de la face postérieure 42 du premier élément creux 12. Le logement 46 est dimensionné de sorte que les gonds 38 de la plaquette 32 fassent saillie du premier élément creux 12. Enfin, les premiers moyens de fixation 28 du premier élément creux 12 au boîtier de montre 18 comprennent un perçage 48 qui débouche dans le logement 46 et qui est pratiqué dans les faces latérales 44 du premier élément creux 12, transversalement à la direction longitudinale du bracelet. Ce perçage 48 est prévu pour recevoir l'axe de fixation 36.The first hollow element 12 forms an envelope of substantially trapezoidal cross-section delimited by a front face 40, a rear face 42 and two lateral faces 44. In order to be able to slide the second element 14 inside this envelope, a housing 46 is formed in the first hollow element 12. This housing 46 passes through the first hollow element 12 from one side to the other and opens at the front of the side of the front face 40 and at the rear of the side of the rear face 42 of the first hollow element. 12. The housing 46 is dimensioned so that the hinges 38 of the plate 32 protrude from the first hollow element 12. Finally, the first fastening means 28 of the first hollow element 12 to watch case 18 include a bore 48 which opens into the housing 46 and which is formed in the side faces 44 of the first hollow member 12, transversely to the longitudinal direction of the bracelet. This bore 48 is provided to receive the fixing pin 36.

Comme on peut le voir notamment sur la figure 2, le profil de la face frontale 40 du premier élément creux 12 épouse le contour de la carrure 20 de la boîte de montre 18. Pour l'assemblage du maillon 10 sur la boîte de montre 18, on insère tout d'abord le second élément 14 dans le premier élément creux 12 de sorte que les gonds 38 de la plaquette 32 fassent saillie du premier élément creux 12. Après quoi, on glisse le premier élément creux 12 entre les cornes 22 de la boîte de montre 18. Lorsque cette étape du montage est achevée, les trous 24 pratiqués dans les cornes 22, le perçage 48 usiné dans le premier élément creux 12 et la charnière cylindrique creuse 34 sont tous alignés. Pour terminer le montage, il suffit alors de faire passer l'axe de fixation 36 successivement à travers le trou 24 de l'une des cornes 22, puis à travers le perçage 48 et la charnière cylindrique creuse 34 jusqu'à ce que l'axe de fixation 36 émerge dans le trou 24 de l'autre corne 22. Pour garantir le bon couplage entre le maillon 10 et la boîte de montre 18, l'axe de fixation 36 présente, à l'une de ses extrémités, une augmentation de diamètre 50 et à son autre extrémité un trou taraudé pour le vissage d'une vis 52 qui permet de bloquer l'axe de fixation 36.As can be seen in particular on the figure 2 the profile of the front face 40 of the first hollow element 12 matches the contour of the middle part of the watch case 18. For assembly of the link 10 on the watch case 18, the second element is first inserted 14 in the first hollow element 12 so that the hinges 38 of the wafer 32 protrude from the first hollow element 12. After that, the first hollow element 12 is slipped between the horns 22 of the watch case 18. When this step of the assembly is completed, the holes 24 made in the horns 22, the bore 48 machined in the first hollow element 12 and the hollow cylindrical hinge 34 are all aligned. To complete the assembly, it suffices then to pass the fixing pin 36 successively through the hole 24 of one of the horns 22, then through the bore 48 and the hollow cylindrical hinge 34 until the fixing pin 36 emerges in the hole 24 of the other horn 22. In order to guarantee the good coupling between the link 10 and the watch case 18, the fixing pin 36 has, at one of its ends, an increase of diameter 50 and at its other end a tapped hole for screwing a screw 52 which makes it possible to block the fixing pin 36.

Le montage est complété par un dispositif mécanique de réglage comprenant une et, préférentiellement, deux vis de réglage 54. Ces vis de réglage 54 sont vissées chacune dans un trou taraudé 56 pratiqué dans la face inférieure 58 du fond 26 située du côté du poignet de l'utilisateur. Ces vis 54 comprennent une tête 60 noyée dans la face inférieure 58 du fond 26 de la boîte de montre 18 et prolongée par une tige filetée 62. Les vis coopèrent par leur tête 60 avec une surface 64 de forme complémentaire ménagée dans le premier élément creux 12 comme décrit ci-dessous.The assembly is completed by a mechanical adjustment device comprising one and, preferably, two adjusting screws 54. These adjustment screws 54 are each screwed into a threaded hole 56 formed in the lower face 58 of the bottom 26 located on the wrist side of the wrist. the user. These screws 54 comprise a head 60 embedded in the lower face 58 of the bottom 26 of the watch case 18 and extended by a threaded rod 62. The screws cooperate by their head 60 with a surface 64 of complementary shape formed in the first hollow element 12 as described below.

Pour ajuster la position du maillon 10 par rapport à la boîte de montre 18 et compenser les jeux éventuels entre ces deux éléments, on procède de la façon suivante. On a accès à la vis de réglage 54 via le trou taraudé 56 qui débouche dans la face inférieure 58 du fond 26 de la boîte de montre 18. On visse la vis de réglage 54 de façon que celle-ci se translate de bas en haut selon la flèche A dans le trou taraudé 56. Par sa tête 60, la vis de réglage 54 vient appuyer sur la surface 64 en regard ménagée dans le premier élément creux 12 de façon à faire pivoter ce premier élément creux 12 dans le sens contraire des aiguilles d'une montre selon la flèche B. En pivotant de la sorte, le premier élément creux 12 se rapproche de la boîte de montre 18. On arrête de visser la vis de réglage 54 lorsque la face frontale 40 du premier élément creux 12 épouse le contour de la carrure 20 de la boîte de montre 18. On comprendra qu'en vissant plus ou moins la vis de réglage 54, cela permet de régler de manière très précise la position du premier élément creux 12 par rapport à la carrure 20 de la boîte de montre 18. De plus, le réglage est imperdable.To adjust the position of the link 10 with respect to the watch case 18 and to compensate for any gaps between these two elements, the procedure is as follows. Access to the adjusting screw 54 via the threaded hole 56 which opens into the lower face 58 of the bottom 26 of the watch case 18. The adjusting screw 54 is screwed so that it is translated from bottom to top according to the arrow A in the tapped hole 56. By its head 60, the adjusting screw 54 presses on the facing surface 64 formed in the first hollow element 12 so as to pivot this first hollow element 12 in the opposite direction of the clockwise according to the arrow B. By pivoting in this way, the first hollow member 12 approaches the watch case 18. The adjusting screw 54 is stopped from being screwed when the front face 40 of the first hollow element 12 matches the outline of the middle part of the box. 18. It will be understood that by more or less screwing the adjusting screw 54, this makes it possible to very precisely adjust the position of the first hollow element 12 with respect to the middle part of the watch case 18. In addition, the setting is captive.

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 peuvent être envisagées par l'homme du métier sans sortir du cadre de l'invention tel que défini par les revendications annexées à la présente demande de brevet. En particulier, on comprendra que bien qu'ayant été décrite en liaison avec un maillon de bracelet et un boîtier de montre réalisés au moins partiellement en un matériau céramique, la présente invention peut s'appliquer de manière identique à des maillons et à des boîtiers réalisés en un autre matériau dur tel que l'acier.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 can be envisaged by those skilled in the art without departing from the scope of the invention as defined by the claims appended to this patent application. In particular, it will be understood that although it has been described in connection with a bracelet link and a watch case made at least partially of a ceramic material, the present invention can be applied identically to links and housings made of another hard material such as steel.

Claims (8)

  1. System for connecting a bracelet to a watch case (18) by means of a link (10), said system comprising said watch case and said bracelet link, the watch case (18) comprising a caseband (20) and a back cover (26), the link (10) comprising a first hollow element (12) and a second element (14) partly nesting in the first hollow element (12), the first hollow element (12) carrying a first means (28) of fastening to the watch case (18) and the second element (14) carrying a second means (30) of fastening to an adjacent bracelet link (16), characterized in that the watch case (18) includes a mechanical device arranged to pivot the first hollow element (12) so that said first hollow element (12) is pressed against the caseband (20) of the watch case (18).
  2. System according to claim 1, characterized in that the mechanical device includes at least one adjusting screw (54) arranged to be screwed farther or less far into a threaded hole (56) arranged in the bottom face (58) of the back cover (26) of the watch case (18), located on the side of the user's wrist, said adjusting screw (54) comprising a head (60) via which said screw cooperates with an opposite surface (64) of the first hollow element (12).
  3. System according to claim 2, characterized in that the second element (14) includes a plate (32) which, on the watch case (18) side, is provided with a hollow cylindrical hinge (34) enabling a fastening pin (36) to pass therethrough and which, on the bracelet side, is provided with a second means (30) of fastening to an adjacent bracelet link (16).
  4. System according to claim 3, characterized in that the means of fastening the plate (32) to the adjacent bracelet link (16) includes hinge pins (38) used in conjunction with a bar.
  5. System according to any of claims 3 or 4, characterized in that the first hollow element (1) forms an envelope delimited by a front face (40), a rear face (42) and two lateral faces (44), in that a housing (46), inside which the second element (14) slides, is arranged in the first hollow element (12), said housing (46) passing right through the first hollow element (12) and emerging, at the front, in the front face (40) side and at the rear, in the rear face (42) side of the first hollow element (12), and in that the housing (46) is sized so that the plate (32) projects from the first hollow element (12).
  6. System according to claim 5, characterized in that the first means of fastening the first hollow element (12) to the watch case (18) includes a bore (48) made transversely to the longitudinal direction of the bracelet in the lateral faces (44) of the first hollow element (12) and which ends in the housing (46), said bore (48) being arranged to receive the fastening pin (36).
  7. System according to claim 6, characterized in that the caseband (20) is extended in the longitudinal direction of the bracelet by horns (22) in which a hole (24) is made and between which the link (10) slides so that the holes (24) made in the horns (22), the bore (48) machined in the first hollow element (12) and the hollow cylindrical hinge (34) are aligned, the fastening pin (36) being passed in succession through the hole (24) in one of the horns (22), then through the bore (48) and the hollow cylindrical hinge (34) until the fastening pin (36) emerges in the hole (24) of the other horn (22).
  8. System according to claim 7, characterized in that the fastening pin (36) has, at one end thereof, an increased diameter (50) and, at the other end thereof, a threaded hole for a screw (52) to be screwed into
EP12188014.0A 2012-10-10 2012-10-10 System for connecting a bracelet to a watch case Active EP2720093B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP12188014.0A EP2720093B1 (en) 2012-10-10 2012-10-10 System for connecting a bracelet to a watch case
US13/940,689 US9004750B2 (en) 2012-10-10 2013-07-12 System for connecting a bracelet to a watch case
JP2013170978A JP5758959B2 (en) 2012-10-10 2013-08-21 Structure for connecting the bracelet to the watch case
CN201310469612.0A CN103720141B (en) 2012-10-10 2013-10-10 System for connecting a bracelet to a watch case
HK14110238.5A HK1196757A1 (en) 2012-10-10 2014-10-14 System for connecting a bracelet to a watch case

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12188014.0A EP2720093B1 (en) 2012-10-10 2012-10-10 System for connecting a bracelet to a watch case

Publications (2)

Publication Number Publication Date
EP2720093A1 EP2720093A1 (en) 2014-04-16
EP2720093B1 true EP2720093B1 (en) 2014-12-10

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EP12188014.0A Active EP2720093B1 (en) 2012-10-10 2012-10-10 System for connecting a bracelet to a watch case

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US (1) US9004750B2 (en)
EP (1) EP2720093B1 (en)
JP (1) JP5758959B2 (en)
CN (1) CN103720141B (en)
HK (1) HK1196757A1 (en)

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CN103720141A (en) 2014-04-16
US20140098649A1 (en) 2014-04-10
EP2720093A1 (en) 2014-04-16
US9004750B2 (en) 2015-04-14
JP5758959B2 (en) 2015-08-05
HK1196757A1 (en) 2014-12-24
JP2014076277A (en) 2014-05-01
CN103720141B (en) 2015-05-27

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