EP2767184B1 - Watch strap clasp - Google Patents

Watch strap clasp Download PDF

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Publication number
EP2767184B1
EP2767184B1 EP13155028.7A EP13155028A EP2767184B1 EP 2767184 B1 EP2767184 B1 EP 2767184B1 EP 13155028 A EP13155028 A EP 13155028A EP 2767184 B1 EP2767184 B1 EP 2767184B1
Authority
EP
European Patent Office
Prior art keywords
clasp
end link
cover
bracelet
link
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
EP13155028.7A
Other languages
German (de)
French (fr)
Other versions
EP2767184A1 (en
Inventor
Rocco Catanese
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.)
Omega SA
Original Assignee
Omega 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 Omega SA filed Critical Omega SA
Priority to EP13155028.7A priority Critical patent/EP2767184B1/en
Priority to US14/102,835 priority patent/US9003611B2/en
Priority to CN201510393704.4A priority patent/CN105029841B/en
Priority to CN201310692906.XA priority patent/CN103976529B/en
Priority to JP2013262427A priority patent/JP5764193B2/en
Publication of EP2767184A1 publication Critical patent/EP2767184A1/en
Priority to HK15101181.0A priority patent/HK1200668A1/en
Priority to US14/645,980 priority patent/US9723900B2/en
Application granted granted Critical
Publication of EP2767184B1 publication Critical patent/EP2767184B1/en
Priority to JP2015101598A priority patent/JP5970108B2/en
Priority to HK16100554.0A priority patent/HK1212566A1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • A44C5/246—Fasteners for straps, chains or the like for closed straps with folding devices having size adjusting means
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • 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.
    • Y10T24/21—Strap tighteners
    • Y10T24/2143—Strap-attached folding lever
    • Y10T24/2155—Jewelry-watch straps

Definitions

  • the present invention relates to a clasp for a watch strap. More specifically, the present invention relates to a clasp for a watch strap comprising means that allow fine adjustment of the length of the bracelet.
  • Clasps comprising means for a fine adjustment of the length of the wristband of a watch are already known from the state of the art.
  • Clasp for fine adjustment of the length of a bracelet means clasps that allow to adjust the length of a short strap to allow to fit the fairest length for optimal comfort when wearing the bracelet. shows.
  • Such clasps usually include a terminal link through which one of the strands of the bracelet is connected to the lid of the clasp. This terminal link is slidable in a longitudinal direction of the clasp between a first retracted position in which it is housed in the lid of the clasp and a second extended position in which it is disengaged from the clasp. Therefore, the length available for the fine adjustment is determined by the travel of the end link between its first and second positions.
  • the end link For indexing the position of the end link, the end link cooperates via a toothed element with a toothed rack.
  • the end link When the toothed element is engaged with the rack teeth, the end link is immobilized.
  • resilient means of uncoupling are provided.
  • a clasp of the type described above is known, for example, from the European patent application registered under the number 11192833.9 in the name of the plaintiff. According to one of its features, this clasp is equipped with a stop means preventing extraction of the terminal link from the clasp cover. With this feature, the connection between the clasp cover and the bracelet strand connected to the terminal link is captive, except to destroy the clasp.
  • the stop means is removable, which makes it possible, if necessary, to replace the end link during a return of the wristwatch in after-sales service.
  • a threaded through hole in which is screwed a first screw is formed in the end link.
  • the tip of the first screw protrudes into a groove in the bottom of the clasp cover.
  • this groove is bounded at each of its ends by a stop which marks the bottom of the groove, the fine adjustment end link is completely captive once the first screw is screwed.
  • a cap is removed or glued to hide the first screw and not to reveal a hole in front of the user.
  • the clasp is definitely unmountable.
  • the present invention aims to overcome this disadvantage as well as others by providing a clasp for wristwatch whose mechanical construction is simplified and whose operation is reliable.
  • the present invention relates to a clasp for a watchband according to claim 1.
  • the present invention provides a watchband clasp in which the fine adjustment mechanism of the length of the bracelet comprises a sliding terminal link provided with at least one lug which protrudes into a groove formed in a bottom of the clasp cover.
  • the terminal link is captive and the lug is not visible to the user, so it is not necessary to take action to hide this lug.
  • the end link comprises at least one pad which defines a sliding surface between the end link and the bottom of the cover.
  • the present invention proceeds from the general inventive idea of providing the sliding terminal link of a fine adjustment system of the length of a bracelet of a locking means which is invisible to the user. In this way, it is not necessary to take measures to mask the stop means, which substantially simplifies the construction of the clasp.
  • the terminal link slides on the bottom of the clasp cover in at least one pad, which reduces the contact area between the end link and the cover. The friction forces are therefore lower, so that the movement of the end link is easier.
  • the figure 1 is a perspective view in the dissociated state of the clasp according to the invention while the figure 2 is a perspective view of this same clasp in the assembled state.
  • the clasp according to the invention comprises a lid 2 connected on one side to a first strand of bracelet 4, only two links are visible in the drawing.
  • a folding clasp closure system 6 whose structure is known per se and which will therefore not be further described here is interposed between the cover 2 and the first wristband strand 4. It will be noted that the clasp closure system 6 can be omitted and that the lid 2 can be connected to the first strand of bracelet 4 directly.
  • the lid 2 is connected on the second side to a second strand of bracelet 8, three links of which are visible in the drawing.
  • a terminal link 10 for fine adjustment of the length of the wristband of the watch is interposed between the cover 2 and the second wristband strand 8.
  • the lid 2 has a U-shaped general section and is provided with two wings 12 which face each other. These wings 12 each bear on their face facing the inside of the cover 2 a rack toothing 14. Moreover, a groove 16, formed in the bottom of the cover 2, defines two end stops 18 whose role will be described in FIG. detail later. Finally, the terminal link 10 comprises lateral guide surfaces 20 to be slidably guided in the cover 2 between the bottom of the cover 2 and the wings 12.
  • the end link 10 is capable of sliding in a longitudinal direction of the clasp 1 between a first position ( figure 2 ) in which the end link 10 is engaged in the cover 2 of the clasp 1, and a second position ( figure 3 ) in which the end link 10 is disengaged from the cover 2 of the clasp 1.
  • the length available for the adjustment of the bracelet is determined by the travel of the end link 10 between its first and second positions.
  • the terminal link 10 comprises a median knuckle 22 which is interlocked between two end knuckles 24 carried by the adjacent link of the second bracelet strand 8.
  • the assembly between the links is provided by a bar 26 freely traversing the knuckles 22 and 24 and which is held by two end screws 28.
  • the terminal link 10 comprises a groove 30 which extends transversely to the longitudinal axis of symmetry of the clasp 1 and in which a V-shaped spring 32 is arranged.
  • the spring 32 fixed in the groove 30 by means of a screw 34, is capped by a push button 36.
  • the push-button 36 is substantially in the form of a rectilinear actuating bar which extends transversely to the longitudinal axis of symmetry of the clasp 1 and which has at each of its ends a toothed element 38, for example under the shape of a half-cylinder. These toothed elements 38 are intended to engage the toothing of the racks 14. It will be understood that when the end link 10 and its pushbutton 36 are slid between the two wings 12 inside the lid 2 of the clasp 1 as illustrated. to the figure 2 , the spring 32 which is compressed presses the push button 36 towards the racks 14, so that the toothed elements 38 are engaged with the teeth of the racks 14. Conversely, when the push button 36 is pressed next the arrow A against the elastic return force of the spring 32, the toothed elements 38 are released from their engagement with the teeth of the racks 14.
  • the lower surface 42 of the end link 10 which is opposite the bottom of the cover 2 is provided with at least one and preferably two lugs 44 which project into the groove 16 formed in the bottom of the lid 2.
  • this groove 16 is bounded at each of its ends by a stop 18 which marks the limits of the groove 16, the end link 10 of fine adjustment is completely captive once set up in the lid 2 of the clasp 1.
  • the terminal link 10 and its push button 36 are slid between the wings 12 of the cover 2, after the teeth of the racks 14 are screwed by means of screws 46 on the faces of the flanges 12 directed towards the inside of the cover 2.
  • the lower surface 42 of the end link 10 is provided with figure 4 ) of at least one and, preferably, two pads 48 by which the end link 10 slides on the bottom of the cover 2 of the clasp 1. With these pads 48, the contact surface between the end link 10 and the bottom of the cover 2 is reduced, which limits the friction forces and makes it easier to slide the end link 10 inside the cover 2.
  • the pads 48 are extend over the entire length of the lower surface 42 of the end link 10. According to a second variant embodiment illustrated in FIG.
  • the pads 48 extend over only a fraction of the length of the lower surface 42 of the lid 2, so that even when the end link 10 is pulled into its second position ( figure 3 ) in which it is clear of the lid 2 of the clasp 1, the contact marks between the pads 48 and the bottom of the lid 2 remain invisible. It has been realized that the pads 48 tended to mark the bottom of the lid 2, which revealed signs of wear in the eyes of the user.
  • a pair of stops 50 is provided to prevent unintentional actuation of the fine adjustment device according to the invention during the manipulation of the clasp closure system 6.
  • 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.
  • the lugs and the pads can be machined in the mass of the end link.
  • the terminal link with its lugs and its pads can be made in one piece by injection molding (a process better known as its Anglo-Saxon name Metal Injection Molding or MIM) of a metal powder such as titanium or steel.
  • MIM Metal Injection Molding

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  • Buckles (AREA)
  • Adornments (AREA)

Description

La présente invention concerne un fermoir pour bracelet de montre. Plus précisément, la présente invention concerne un fermoir pour bracelet de montre comprenant des moyens qui permettent un réglage fin de la longueur du bracelet.The present invention relates to a clasp for a watch strap. More specifically, the present invention relates to a clasp for a watch strap comprising means that allow fine adjustment of the length of the bracelet.

Des fermoirs comprenant des moyens pour un réglage fin de la longueur du bracelet d'une montre sont déjà connus de l'état de la technique. Par fermoir pour réglage fin de la longueur d'un bracelet, on entend des fermoirs qui permettent de régler sur une faible course la longueur d'un bracelet afin de permettre d'adapter au plus juste cette longueur pour un confort optimal au porter de la montre. De tels fermoirs comprennent usuellement un maillon terminal par l'intermédiaire duquel l'un des brins du bracelet est relié au couvercle du fermoir. Ce maillon terminal est apte à coulisser selon une direction longitudinale du fermoir entre une première position rétractée dans laquelle il vient se loger dans le couvercle du fermoir et une seconde position sortie dans laquelle il est dégagé du fermoir. Par conséquent, la longueur disponible pour le réglage fin est déterminée par la course du maillon terminal entre ses première et seconde positions.Clasps comprising means for a fine adjustment of the length of the wristband of a watch are already known from the state of the art. Clasp for fine adjustment of the length of a bracelet, means clasps that allow to adjust the length of a short strap to allow to fit the fairest length for optimal comfort when wearing the bracelet. shows. Such clasps usually include a terminal link through which one of the strands of the bracelet is connected to the lid of the clasp. This terminal link is slidable in a longitudinal direction of the clasp between a first retracted position in which it is housed in the lid of the clasp and a second extended position in which it is disengaged from the clasp. Therefore, the length available for the fine adjustment is determined by the travel of the end link between its first and second positions.

Pour l'indexation de la position du maillon terminal, le maillon terminal coopère via un élément denté avec une denture de crémaillère. Lorsque l'élément denté est en prise avec la denture de crémaillère, le maillon terminal est immobilisé. Pour désengager l'élément denté de sa prise avec la denture de crémaillère, on prévoit des moyens élastiques de désaccouplement.For indexing the position of the end link, the end link cooperates via a toothed element with a toothed rack. When the toothed element is engaged with the rack teeth, the end link is immobilized. To disengage the toothed element from its engagement with the rack teeth, resilient means of uncoupling are provided.

Un fermoir du type décrit ci-dessus est connu, par exemple, par la demande de brevet européen enregistrée sous le numéro 11192833.9 au nom de la demanderesse. Selon l'une de ses caractéristiques, ce fermoir est équipé d'un moyen d'arrêt empêchant l'extraction du maillon terminal du couvercle de fermoir. Grâce à cette caractéristique, la liaison entre le couvercle du fermoir et le brin de bracelet relié au maillon terminal est imperdable, sauf à détruire le fermoir.A clasp of the type described above is known, for example, from the European patent application registered under the number 11192833.9 in the name of the plaintiff. According to one of its features, this clasp is equipped with a stop means preventing extraction of the terminal link from the clasp cover. With this feature, the connection between the clasp cover and the bracelet strand connected to the terminal link is captive, except to destroy the clasp.

Selon une variante préférée de réalisation, le moyen d'arrêt est démontable, ce qui permet, si nécessaire, de remplacer le maillon terminal lors d'un retour de la montre-bracelet en service après-vente. A cet effet, un trou traversant fileté dans lequel est vissée une première vis est ménagé dans le maillon terminal. La pointe de la première vis fait saillie dans une rainure ménagée dans le fond du couvercle du fermoir. Comme cette rainure est bornée à chacune de ses extrémités par une butée qui marque le fond de la rainure, le maillon terminal de réglage fin est totalement imperdable une fois la première vis vissée. Par la suite, un bouchon est chassé ou collé afin de masquer la première vis et de ne pas laisser apparaître un trou au regard de l'utilisateur. Dans ce cas cependant, le fermoir est définitivement indémontable. Pour remédier à cet inconvénient, il est proposé de masquer la première vis au regard de l'utilisateur au moyen d'une seconde vis disposée dans le prolongement de la première vis. De cette façon, l'ensemble reste démontable dans la mesure où il suffit de déposer la seconde vis pour pouvoir ensuite retirer la première vis.According to a preferred embodiment, the stop means is removable, which makes it possible, if necessary, to replace the end link during a return of the wristwatch in after-sales service. For this purpose, a threaded through hole in which is screwed a first screw is formed in the end link. The tip of the first screw protrudes into a groove in the bottom of the clasp cover. As this groove is bounded at each of its ends by a stop which marks the bottom of the groove, the fine adjustment end link is completely captive once the first screw is screwed. Subsequently, a cap is removed or glued to hide the first screw and not to reveal a hole in front of the user. In this case however, the clasp is definitely unmountable. To overcome this drawback, it is proposed to hide the first screw facing the user by means of a second screw disposed in the extension of the first screw. In this way, the assembly remains removable to the extent that it is sufficient to remove the second screw to then remove the first screw.

On comprend de ce qui précède que pour pouvoir garantir le caractère démontable du maillon terminal, la construction du fermoir est relativement complexe. Un autre fermoir selon le préambule de la revendication 1 est connu de EP 2 361 523 .It is understood from the foregoing that to be able to guarantee the dismountability of the terminal link, the construction of the clasp is relatively complex. Another clasp according to the preamble of claim 1 is known from EP 2 361 523 .

La présente invention a pour but de remédier à cet inconvénient ainsi qu'à d'autres encore en procurant un fermoir pour bracelet de montre dont la construction mécanique est simplifiée et dont le fonctionnement est fiable.The present invention aims to overcome this disadvantage as well as others by providing a clasp for wristwatch whose mechanical construction is simplified and whose operation is reliable.

A cet effet, la présente invention concerne un fermoir pour bracelet de montre selon la revendication 1.For this purpose, the present invention relates to a clasp for a watchband according to claim 1.

Grâce à ces caractéristiques, la présente invention procure un fermoir pour bracelet de montre dans lequel le mécanisme de réglage fin de la longueur du bracelet comprend un maillon terminal coulissant muni d'au moins un ergot qui fait saillie dans une rainure ménagée dans un fond du couvercle du fermoir. Le maillon terminal est imperdable et l'ergot n'est pas visible au regard de l'utilisateur, de sorte qu'il n'est pas nécessaire de prendre de mesure pour masquer cet ergot.Thanks to these features, the present invention provides a watchband clasp in which the fine adjustment mechanism of the length of the bracelet comprises a sliding terminal link provided with at least one lug which protrudes into a groove formed in a bottom of the clasp cover. The terminal link is captive and the lug is not visible to the user, so it is not necessary to take action to hide this lug.

Selon une caractéristique complémentaire de l'invention, le maillon terminal comprend au moins un patin qui définit une surface de glissement entre le maillon terminal et le fond du couvercle.According to a complementary feature of the invention, the end link comprises at least one pad which defines a sliding surface between the end link and the bottom of the cover.

Grâce à cette autre caractéristique, la surface de contact entre le maillon terminal et le fond du couvercle est réduite, ce qui limite les forces de frottement et rend le maillon terminal plus facile à déplacer.With this other feature, the contact area between the end link and the bottom of the cover is reduced, which limits the friction forces and makes the end link easier to move.

D'autres caractéristiques et avantages de l'invention ressortiront plus clairement de la description détaillée qui suit d'un mode de réalisation du fermoir pour bracelet de montre 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 en perspective et à l'état dissocié du fermoir selon l'invention;
  • la figure 2 est une vue en perspective du fermoir de la figure 1 à l'état assemblé, le maillon terminal de réglage fin étant en position rentrée;
  • la figure 3 est une vue analogue à celle de la figure 2, le maillon de réglage fin étant en position sortie ;
  • la figure 4 est une vue en perspective à l'état retourné du maillon terminal de réglage fin, et
  • la figure 5 est une vue en coupe transversale du maillon terminal de réglage fin selon l'invention.
Other characteristics and advantages of the invention will emerge more clearly from the following detailed description of an embodiment of the clasp for a watch band according to the invention, this example being given for purely illustrative and non-limiting purposes only in connection with the appended drawing in which:
  • the figure 1 is a perspective view and in the dissociated state of the clasp according to the invention;
  • the figure 2 is a perspective view of the clasp of the figure 1 in the assembled state, the fine adjustment end link being in the retracted position;
  • the figure 3 is a view similar to that of the figure 2 the fine adjustment link being in the extended position;
  • the figure 4 is a perspective view in the returned state of the terminal fine adjustment link, and
  • the figure 5 is a cross-sectional view of the fine adjustment end link according to the invention.

La présente invention procède de l'idée générale inventive qui consiste à munir le maillon terminal coulissant d'un système de réglage fin de la longueur d'un bracelet d'un moyen d'arrêtage qui est invisible au regard de l'utilisateur. De la sorte, il n'est pas nécessaire de prendre de mesure pour masquer le moyen d'arrêtage, ce qui simplifie sensiblement la construction du fermoir. D'autre part, le maillon terminal glisse sur le fond du couvercle du fermoir selon au moins un patin, ce qui réduit la surface de contact entre le maillon terminal et le couvercle. Les forces de frottement sont donc moindres, de sorte que le déplacement du maillon terminal est plus aisé.The present invention proceeds from the general inventive idea of providing the sliding terminal link of a fine adjustment system of the length of a bracelet of a locking means which is invisible to the user. In this way, it is not necessary to take measures to mask the stop means, which substantially simplifies the construction of the clasp. On the other hand, the terminal link slides on the bottom of the clasp cover in at least one pad, which reduces the contact area between the end link and the cover. The friction forces are therefore lower, so that the movement of the end link is easier.

La figure 1 est une vue en perspective à l'état dissocié du fermoir selon l'invention tandis que la figure 2 est une vue en perspective de ce même fermoir à l'état assemblé. Désigné dans son ensemble par la référence numérique générale 1, le fermoir selon l'invention comprend un couvercle 2 relié d'un premier côté à un premier brin de bracelet 4 dont seuls deux maillons sont visibles au dessin. Un système de fermeture à boucle déployante 6 dont la structure est connue en soi et qui ne sera donc pas décrit davantage ici est interposé entre le couvercle 2 et le premier brin de bracelet 4. On notera que le système de fermeture à boucle déployante 6 peut être omis et que le couvercle 2 peut être relié au premier brin de bracelet 4 directement. Le couvercle 2 est relié d'un second côté à un second brin de bracelet 8 dont trois maillons sont visibles au dessin. Un maillon terminal 10 de réglage fin de la longueur du bracelet de la montre est interposé entre le couvercle 2 et le second brin de bracelet 8.The figure 1 is a perspective view in the dissociated state of the clasp according to the invention while the figure 2 is a perspective view of this same clasp in the assembled state. Designated as a whole by the general reference numeral 1, the clasp according to the invention comprises a lid 2 connected on one side to a first strand of bracelet 4, only two links are visible in the drawing. A folding clasp closure system 6 whose structure is known per se and which will therefore not be further described here is interposed between the cover 2 and the first wristband strand 4. It will be noted that the clasp closure system 6 can be omitted and that the lid 2 can be connected to the first strand of bracelet 4 directly. The lid 2 is connected on the second side to a second strand of bracelet 8, three links of which are visible in the drawing. A terminal link 10 for fine adjustment of the length of the wristband of the watch is interposed between the cover 2 and the second wristband strand 8.

Comme on peut le voir à l'examen de la figure 1, le couvercle 2 présente une section générale en forme de U et est muni de deux ailes 12 qui se font face. Ces ailes 12 portent chacune sur leur face dirigée vers l'intérieur du couvercle 2 une denture de crémaillère 14. Par ailleurs, une rainure 16, ménagée dans le fond du couvercle 2, définit deux butées d'extrémité 18 dont le rôle sera décrit en détail ultérieurement. Enfin, le maillon terminal 10 comprend des surfaces de guidage latérales 20 afin d'être guidé à coulissement dans le couvercle 2 entre le fond du couvercle 2 et les ailes 12. On appréciera par examen comparé des figures 2 et 3 que le maillon terminal 10 est capable de coulisser suivant une direction longitudinale du fermoir 1 entre une première position (figure 2) dans laquelle le maillon terminal 10 est engagé dans le couvercle 2 du fermoir 1, et une seconde position (figure 3) dans laquelle le maillon terminal 10 est dégagé du couvercle 2 du fermoir 1. La longueur disponible pour le réglage du bracelet est déterminée par la course du maillon terminal 10 entre ses première et seconde positions.As can be seen from the examination of the figure 1 , the lid 2 has a U-shaped general section and is provided with two wings 12 which face each other. These wings 12 each bear on their face facing the inside of the cover 2 a rack toothing 14. Moreover, a groove 16, formed in the bottom of the cover 2, defines two end stops 18 whose role will be described in FIG. detail later. Finally, the terminal link 10 comprises lateral guide surfaces 20 to be slidably guided in the cover 2 between the bottom of the cover 2 and the wings 12. It will be appreciated by comparative examination of figures 2 and 3 the end link 10 is capable of sliding in a longitudinal direction of the clasp 1 between a first position ( figure 2 ) in which the end link 10 is engaged in the cover 2 of the clasp 1, and a second position ( figure 3 ) in which the end link 10 is disengaged from the cover 2 of the clasp 1. The length available for the adjustment of the bracelet is determined by the travel of the end link 10 between its first and second positions.

Le maillon terminal 10 comprend un charnon médian 22 qui vient s'imbriquer entre deux charnons extrêmes 24 portés par le maillon voisin du second brin de bracelet 8. L'assemblage entre les maillons est assuré par une barrette 26 traversant librement les charnons 22 et 24 et qui est maintenue par deux vis d'extrémité 28.The terminal link 10 comprises a median knuckle 22 which is interlocked between two end knuckles 24 carried by the adjacent link of the second bracelet strand 8. The assembly between the links is provided by a bar 26 freely traversing the knuckles 22 and 24 and which is held by two end screws 28.

Le maillon terminal 10 comprend une rainure 30 qui s'étend transversalement à l'axe de symétrie longitudinale du fermoir 1 et dans laquelle est disposé un ressort 32 en forme de V. Le ressort 32, fixé dans la rainure 30 au moyen d'une vis 34, est coiffé par un bouton-poussoir 36.The terminal link 10 comprises a groove 30 which extends transversely to the longitudinal axis of symmetry of the clasp 1 and in which a V-shaped spring 32 is arranged. The spring 32, fixed in the groove 30 by means of a screw 34, is capped by a push button 36.

Le bouton-poussoir 36 se présente sensiblement sous la forme d'une barre d'actionnement rectiligne qui s'étend transversalement à l'axe de symétrie longitudinale du fermoir 1 et qui présente à chacune de ses extrémités un élément denté 38 par exemple sous la forme d'un demi-cylindre. Ces éléments dentés 38 sont destinés à venir en prise avec la denture des crémaillères 14. On comprendra que lorsque le maillon terminal 10 et son bouton-poussoir 36 sont glissés entre les deux ailes 12 à l'intérieur du couvercle 2 du fermoir 1 comme illustré à la figure 2, le ressort 32 qui est monté comprimé force le bouton-poussoir 36 en direction des crémaillères 14, de sorte que les éléments dentés 38 sont en prise avec les dentures des crémaillères 14. Inversement, lorsqu'on appuie sur le bouton-poussoir 36 suivant la flèche A à l'encontre de la force de rappel élastique du ressort 32, les éléments dentés 38 sont libérés de leur engagement avec les dentures des crémaillères 14.The push-button 36 is substantially in the form of a rectilinear actuating bar which extends transversely to the longitudinal axis of symmetry of the clasp 1 and which has at each of its ends a toothed element 38, for example under the shape of a half-cylinder. These toothed elements 38 are intended to engage the toothing of the racks 14. It will be understood that when the end link 10 and its pushbutton 36 are slid between the two wings 12 inside the lid 2 of the clasp 1 as illustrated. to the figure 2 , the spring 32 which is compressed presses the push button 36 towards the racks 14, so that the toothed elements 38 are engaged with the teeth of the racks 14. Conversely, when the push button 36 is pressed next the arrow A against the elastic return force of the spring 32, the toothed elements 38 are released from their engagement with the teeth of the racks 14.

On observe à l'examen des figures 4 et 5 qu'un trou traversant fileté 40 dans lequel est vissée la vis 34 de fixation du ressort 32 est usiné dans le maillon terminal 10. Par ailleurs, conformément à la présente invention, la surface inférieure 42 du maillon terminal 10 qui est en regard du fond du couvercle 2 est munie d'au moins un et préférentiellement de deux ergots 44 qui font saillie dans la rainure 16 ménagée dans le fond du couvercle 2. Comme cette rainure 16 est bornée à chacune de ses extrémités par une butée 18 qui marque les limites de la rainure 16, le maillon terminal 10 de réglage fin est totalement imperdable une fois mis en place dans le couvercle 2 du fermoir 1. En effet, pour monter le maillon terminal 10, on procède de la façon suivante : le maillon terminal 10 et son bouton-poussoir 36 sont glissés entre les ailes 12 du couvercle 2, après quoi les dentures des crémaillères 14 sont vissées au moyen de vis 46 sur les faces des ailes 12 dirigées vers l'intérieur du couvercle 2.We observe in the examination of Figures 4 and 5 that a threaded through hole 40 in which is screwed the fixing screw 34 of the spring 32 is machined in the end link 10. In addition, according to the present invention, the lower surface 42 of the end link 10 which is opposite the bottom of the cover 2 is provided with at least one and preferably two lugs 44 which project into the groove 16 formed in the bottom of the lid 2. As this groove 16 is bounded at each of its ends by a stop 18 which marks the limits of the groove 16, the end link 10 of fine adjustment is completely captive once set up in the lid 2 of the clasp 1. In fact, to mount the terminal link 10, one proceeds as follows: the terminal link 10 and its push button 36 are slid between the wings 12 of the cover 2, after the teeth of the racks 14 are screwed by means of screws 46 on the faces of the flanges 12 directed towards the inside of the cover 2.

Selon une autre caractéristique de l'invention, la surface inférieure 42 du maillon terminal 10 est munie (voir figure 4) d'au moins un et, préférentiellement, de deux patins 48 par lesquels le maillon terminal 10 glisse sur le fond du couvercle 2 du fermoir 1. Grâce à ces patins 48, la surface de contact entre le maillon terminal 10 et le fond du couvercle 2 est réduite, ce qui limite les forces de frottement et rend plus aisé le coulissement du maillon terminal 10 à l'intérieur du couvercle 2. Selon une première variante de réalisation de l'invention non illustrée au dessin, les patins 48 s'étendent sur toute la longueur de la surface inférieure 42 du maillon terminal 10. Selon une seconde variante de réalisation illustrée à la figure 1, les patins 48 s'étendent sur une fraction seulement de la longueur de la surface inférieure 42 du couvercle 2, de façon que même lorsque le maillon terminal 10 est tiré dans sa seconde position (figure 3) dans laquelle il est dégagé du couvercle 2 du fermoir 1, les marques de contact entre les patins 48 et le fond du couvercle 2 restent invisibles. On s'est en effet rendu compte que les patins 48 avaient tendance à marquer le fond du couvercle 2, ce qui laissait apparaître des traces d'usure au regard de l'utilisateur.According to another characteristic of the invention, the lower surface 42 of the end link 10 is provided with figure 4 ) of at least one and, preferably, two pads 48 by which the end link 10 slides on the bottom of the cover 2 of the clasp 1. With these pads 48, the contact surface between the end link 10 and the bottom of the cover 2 is reduced, which limits the friction forces and makes it easier to slide the end link 10 inside the cover 2. According to a first embodiment of the invention not shown in the drawing, the pads 48 are extend over the entire length of the lower surface 42 of the end link 10. According to a second variant embodiment illustrated in FIG. figure 1 the pads 48 extend over only a fraction of the length of the lower surface 42 of the lid 2, so that even when the end link 10 is pulled into its second position ( figure 3 ) in which it is clear of the lid 2 of the clasp 1, the contact marks between the pads 48 and the bottom of the lid 2 remain invisible. It has been realized that the pads 48 tended to mark the bottom of the lid 2, which revealed signs of wear in the eyes of the user.

Enfin, une paire de butées 50 est prévue pour éviter un actionnement involontaire du dispositif de réglage fin selon l'invention lors de la manipulation du système de fermeture à boucle déployante 6.Finally, a pair of stops 50 is provided to prevent unintentional actuation of the fine adjustment device according to the invention during the manipulation of the clasp closure system 6.

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. On notera en particulier que les ergots et les patins peuvent être usinés dans la masse du maillon terminal. Alternativement, le maillon terminal avec ses ergots et ses patins peut être réalisé d'une pièce par moulage par injection (procédé mieux connu sous sa dénomination anglo-saxonne Metal Injection Moulding ou MIM) d'une poudre métallique telle que du titane ou de l'acier. D'autre part, on peut disposer entre le maillon terminal et le second brin du bracelet une rallonge plongeur.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. It should be noted in particular that the lugs and the pads can be machined in the mass of the end link. Alternatively, the terminal link with its lugs and its pads can be made in one piece by injection molding (a process better known as its Anglo-Saxon name Metal Injection Molding or MIM) of a metal powder such as titanium or steel. On the other hand, it is possible to arrange between the end link and the second strand of the bracelet a plunger extension.

Claims (3)

  1. Clasp for a watch bracelet comprising a cover (2) connected on a first side to a first bracelet strand (4) and on a second side to a second bracelet strand (8), a connecting means being inserted between the second bracelet strand (8) and the cover (2) of the clasp (1), said connecting means comprising an end link (10) sliding along a longitudinal direction of the clasp (1) between a first position in which the end link (10) is at least partially engaged in the cover (2) of the clasp (1), and a second position in which the end link (10) is outside the cover (2) of the clasp (1), the end link (10) comprising a push-button (36) which, when pressed, causes a toothed element (38) to change from a first position, in which the toothed element (38) is in mesh with a rack toothing (14), to a second position, in which the toothed element (38) is released from its engagement with the rack toothing (14), the end link (10) being provided with an arresting means preventing the removal of the end link (10) from the cover (2) of the clasp (1), the clasp being characterized in that said arresting means comprises at least one fix lug, which projects into a groove (16) arranged in the bottom of the cover (2) and which defines two end stop members (18).
  2. Clasp for a watch bracelet according to claim 1, characterized in that the end link (10) includes at least one skid (48) which defines a sliding surface between the end link (10) and the bottom of the cover (2).
  3. Bracelet clasp according to any of claims 1 or 2, wherein the cover (2) is connected to the first bracelet strand (4) by an unfolding clasp fastening system (6), characterized in that a pair of stop members (50) is arranged to prevent any inadvertent activation of the end link (10) when the unfolding clasp fastening system (6) is operated.
EP13155028.7A 2013-02-03 2013-02-13 Watch strap clasp Active EP2767184B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP13155028.7A EP2767184B1 (en) 2013-02-13 2013-02-13 Watch strap clasp
US14/102,835 US9003611B2 (en) 2013-02-13 2013-12-11 Clasp for a watch bracelet
CN201310692906.XA CN103976529B (en) 2013-02-13 2013-12-17 Clasp for watch chain
CN201510393704.4A CN105029841B (en) 2013-02-13 2013-12-17 Watch strap clasp
JP2013262427A JP5764193B2 (en) 2013-02-13 2013-12-19 Watch bracelet buckle
HK15101181.0A HK1200668A1 (en) 2013-02-13 2015-02-04 Clasp for a watch bracelet
US14/645,980 US9723900B2 (en) 2013-02-03 2015-03-12 Clasp for a watch bracelet
JP2015101598A JP5970108B2 (en) 2013-02-13 2015-05-19 Watch bracelet buckle
HK16100554.0A HK1212566A1 (en) 2013-02-13 2016-01-19 Clasp for a watch bracelet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13155028.7A EP2767184B1 (en) 2013-02-13 2013-02-13 Watch strap clasp

Publications (2)

Publication Number Publication Date
EP2767184A1 EP2767184A1 (en) 2014-08-20
EP2767184B1 true EP2767184B1 (en) 2015-04-08

Family

ID=47748420

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13155028.7A Active EP2767184B1 (en) 2013-02-03 2013-02-13 Watch strap clasp

Country Status (5)

Country Link
US (2) US9003611B2 (en)
EP (1) EP2767184B1 (en)
JP (2) JP5764193B2 (en)
CN (2) CN103976529B (en)
HK (2) HK1200668A1 (en)

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Also Published As

Publication number Publication date
JP5764193B2 (en) 2015-08-12
CN103976529A (en) 2014-08-13
HK1200668A1 (en) 2015-08-14
CN103976529B (en) 2016-06-29
US20150181989A1 (en) 2015-07-02
HK1212566A1 (en) 2016-06-17
JP2014151191A (en) 2014-08-25
US20140223705A1 (en) 2014-08-14
CN105029841B (en) 2017-04-12
EP2767184A1 (en) 2014-08-20
JP5970108B2 (en) 2016-08-17
US9723900B2 (en) 2017-08-08
JP2015164567A (en) 2015-09-17
CN105029841A (en) 2015-11-11
US9003611B2 (en) 2015-04-14

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