EP3666110B1 - Adjustable bracelet clasp - Google Patents

Adjustable bracelet clasp Download PDF

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Publication number
EP3666110B1
EP3666110B1 EP18212449.5A EP18212449A EP3666110B1 EP 3666110 B1 EP3666110 B1 EP 3666110B1 EP 18212449 A EP18212449 A EP 18212449A EP 3666110 B1 EP3666110 B1 EP 3666110B1
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EP
European Patent Office
Prior art keywords
clasp
bar
bracelet
strip
groove
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
EP18212449.5A
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German (de)
French (fr)
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EP3666110A1 (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 EP18212449.5A priority Critical patent/EP3666110B1/en
Priority to US16/683,574 priority patent/US10945497B2/en
Priority to JP2019219394A priority patent/JP6975218B2/en
Priority to CN201911285872.6A priority patent/CN111317229B/en
Publication of EP3666110A1 publication Critical patent/EP3666110A1/en
Application granted granted Critical
Publication of EP3666110B1 publication Critical patent/EP3666110B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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

Definitions

  • the present invention relates in particular to a bracelet clasp, of the folding clasp type, comprising first and second blades hinged relative to each other, by a first of their respective ends, between a closed position, to wear, and at least one open position, said first blade carrying a member for fixing a first bracelet strand, said second blade, lower, comprising at its second means for adjusting the length of the bracelet, the clasp further comprising at least a locking member for maintaining said first and second blades in their closed position.
  • the present invention also relates to a wristwatch provided with such a clasp.
  • the patent application EP 09131 06 A1 describes a clasp of the folding clasp type comprising a cover having a series of pairs of holes intended to house the ends of a bracelet fastening strip. Two pairs of adjacent holes are spaced apart by a distance defining an adjustment pitch of the useful length of the bracelet, to respond to the problems mentioned above.
  • the clasp described in this patent is of the type with a folding clasp comprising two blades hinged together by means of a rod passing through them both, each of the blades carrying at its free end a member for fastening to a bracelet.
  • a first blade carries a hook intended to engage in a hole provided in the second blade to cooperate there with a trigger making it possible to lock the hook and therefore the clasp in a closed state.
  • the second blade comprises two parts capable of sliding relative to each other within a certain predefined range, defining a step for adjusting the useful length of the bracelet.
  • a first of its two parts carries the hinge connecting it to the first blade while the second part carries the locking trigger.
  • the hole in which the hook engages to lock the clasp has a length, in the longitudinal direction of the bracelet, corresponding to the sliding range between the two parts of the second blade.
  • the trigger has a central part defining two locations for the hook, along the longitudinal direction of the bracelet, corresponding to two different useful lengths of the bracelet.
  • a control member comprising in particular a pusher makes it possible to actuate the trigger to release the hook and open the clasp.
  • Adjusting devices comprising a specific locking member have also been proposed, as an alternative, to avoid this type of drawback.
  • the document EP3170420A1 describes a bracelet clasp according to the preamble of claim 1.
  • a main object of the present invention is to overcome the drawbacks of clasps known from the prior art, by proposing a bracelet clasp comprising a device for adjusting the useful length of the bracelet of simple structure, preferably proposing stable adjustment, including when the clasp is open, and easy to handle.
  • the present invention relates more particularly to a bracelet clasp, of the folding clasp type, according to the characteristics of claim 1.
  • each of the locations can advantageously be made for each of the locations to be defined by a hole formed in the loop and in which the stud is capable of being partially engaged.
  • the invention also relates to a wristwatch comprising a bracelet provided with a clasp according to the invention.
  • the clasp illustrated without limitation in the figures corresponds to a preferred embodiment of the present invention. More specifically, the clasp 1 is of the folding clasp type and is intended to close a timepiece bracelet.
  • the clasp 1 comprises a first blade 2 articulated on a second blade 4 by means of a rod 6 associated with a sleeve, in a non-limiting illustrative manner.
  • Each of the blades has an elongated shape in the longitudinal direction of the bracelet and slightly curved to better match the shape of the wearer's wrist.
  • the first blade 2 comprises two uprights 8 arranged in contact with each other at their end located on the side of the rod 6 and, each having a cutout such that they are not in contact with each other over most of their length.
  • Each of the uprights 8 carries an extension 10, close to its end remote from the rod 6, extending in a direction perpendicular to the longitudinal direction of the bracelet, to form a pusher defining a control member making it possible to unlock the clasp, such that emerges from the picture 3 .
  • the first blade 2 also comprises a cover 14 having an upper wall 16 bearing side walls 18, and a lower wall 17.
  • the side walls 18 are provided with two orifices making it possible to accommodate one end of a bar 20 for fixing a bracelet strand, in a conventional manner.
  • the side walls 18 also include two recesses allowing the extensions 10 to protrude, and thus allowing the clasp 1 to be unlocked.
  • the second blade 4 comprises two arms 22 connected by a transverse upright 24 in their central region.
  • the arms 22 are extended by bent portions 26 defining a passage 3 for another bracelet strand.
  • the free end of the second blade 4 carries a device for adjusting the useful length of the bracelet intended to be associated with the clasp 1.
  • the device for adjusting the useful length of the bracelet comprises a mobile bar 30 of rectangular shape and formed in a conventional manner by a body 301, two pivots 302 arranged in the body 301 as well as two springs 303 arranged in the hollow body 301, resting between the pivots and the central part of the body 301, the two pivots being able to slide in a respective end of the body 301.
  • the movable bar 30 is provided with a pin 32 intended to be engaged in a hole of the bracelet strand to define an anchor point of the latter to the clasp 1.
  • the movable bar 30 makes it possible to move the position of the point anchorage of the bracelet on the clasp and therefore the length of the bracelet to wear.
  • the stud 32 here has the shape of a screw foot and is preferably driven into the bar 30.
  • each bent portion 26 has a recess 27 intended to receive a pusher 28, each being arranged to cooperate with a pivot of the movable bar 30 when the wearer of the watch presses on the latter.
  • each recess 27 has a guide groove 270 provided to receive a pivot 302 of the movable bar 30, the guide groove 270 comprising at each of its ends at least two circular recesses 271, 272 to define two distinct positions of the bar 30 , a short position and a long position.
  • the guide groove 270 comprising at each of its ends at least two circular recesses 271, 272 to define two distinct positions of the bar 30 , a short position and a long position.
  • the circular recesses 271, 272 have a diameter substantially identical to that of the pivots 302 of the bar 30, and greater than the width of the groove so as to avoid any undesired movement of the latter.
  • the pushers 28 comprise a catch 280 of dimensions substantially identical to the guide groove 270 on their internal face, that is to say the face opposite the handling face, which is arranged to act on the pivots 302 of the bar 30 and retract them, and thus allow the travel of the movable bar 30 between the two distinct positions.
  • the guide groove 270 has two successive portions in the thickness of the bent portion 26, a first portion comprising the groove 270 and the two circular clearances 271, 272 and a second portion in the form of an oblong clearance 273 on the back of the groove 270 so as to allow the guiding of the pivots 302 of the strip 30 when the pushers 28 are pressed.
  • a spring 29 is arranged between the pusher and the bottom of the clearance 27 so as to maintain it in its rest position.
  • the spring 29 is associated with a positioning pin and a retaining screw for its assembly to the clasp.
  • each angled portion 26 comprises a shoulder 31 intended to guide the bar 30 during its movement and to prevent any inclination of the latter.
  • the wearer can modify the position of the stud 32 by simultaneously pressing the two push-pieces 28, then by moving the strand attached to the bar 30 via the stud 32 from one position to another. . Once the position has been chosen, the wearer releases the pushers 28 and the position is locked.
  • the space between the arms 22 of the second blade 4 defines a recess allowing the first blade 2 to be housed in the closed state of the clasp 1, in a known manner.
  • Conventional locking means are provided to maintain the closed state of the clasp.
  • a conventional locking mechanism is arranged to keep the first slat 2 attached to the second slat 1 when no pressure is exerted. simultaneously on the pushers formed by the extensions 10.
  • the extensions 10 each have fixed hooks configured to cooperate respectively with hooks arranged on the arms 22 of the second blade 4.
  • the clasp according to the present invention comprises a bar with a stud capable of being moved to adjust the useful length of the bracelet.
  • the construction and handling of this stud are simple and allow the user to easily adjust the clasp when necessary.
  • the clasp according to the present invention is not limited either to the implementation of two positions for the bar. Indeed, the person skilled in the art will not encounter any particular difficulty either in adapting the present teaching to implement a clasp having a greater number of possible adjustment positions.

Description

Domaine techniqueTechnical area

La présente invention concerne un particulièrement un fermoir pour bracelet, du type à boucle déployante, comprenant des première et seconde lames articulées l'une par rapport à l'autre, par une première de leurs extrémités respectives, entre une position fermée, de porter, et au moins une position ouverte, ladite première lame portant un organe de fixation d'un premier brin de bracelet, ladite seconde lame, inférieure, comprenant à sa seconde des moyens de réglage de la longueur du bracelet, le fermoir comportant en outre au moins un organe de verrouillage pour maintenir lesdites première et seconde lames dans leur position fermée.The present invention relates in particular to a bracelet clasp, of the folding clasp type, comprising first and second blades hinged relative to each other, by a first of their respective ends, between a closed position, to wear, and at least one open position, said first blade carrying a member for fixing a first bracelet strand, said second blade, lower, comprising at its second means for adjusting the length of the bracelet, the clasp further comprising at least a locking member for maintaining said first and second blades in their closed position.

La présente invention concerne également une montre-bracelet munie d'un tel fermoir.The present invention also relates to a wristwatch provided with such a clasp.

Etat de la techniqueState of the art

La problématique relative à la nécessité de prévoir un dispositif de réglage de la longueur utile d'un bracelet est bien connue.The problem relating to the need to provide a device for adjusting the useful length of a bracelet is well known.

D'une part, dans le cas de bracelets composés de maillon, il est possible que le poignet du porteur présente une circonférence dont la valeur est située entre deux configurations du bracelet différant l'une de l'autre d'un seul maillon. Aussi, il est utile de prévoir un dispositif de réglage de la longueur utile du bracelet permettant un ajustement plus fin de la longueur du bracelet que le retrait ou l'ajout d'un maillon.On the one hand, in the case of bracelets made up of links, it is possible for the wrist of the wearer to have a circumference whose value is situated between two configurations of the bracelet differing from each other by a single link. Also, it is useful to provide a device for adjusting the useful length of the bracelet allowing finer adjustment of the length of the bracelet than removing or adding a link.

D'autre part, on sait également que la valeur de la circonférence du poignet varie en fonction des saisons, une valeur maximale étant généralement atteinte en été et une valeur minimale étant atteinte en hiver. Il est là encore préférable de prévoir un dispositif de réglage fin de la longueur utile du bracelet permettant au porteur du bracelet d'ajuster cette longueur pour améliorer le confort du bracelet au porter.On the other hand, it is also known that the value of the circumference of the wrist varies according to the seasons, a maximum value being generally reached in summer and a minimum value being reached in winter. It is again preferable to provide a fine adjustment device for the length usefulness of the bracelet allowing the wearer of the bracelet to adjust this length to improve the comfort of the bracelet when worn.

A titre d'exemple, la demande de brevet EP 09131 06 A1 décrit un fermoir du type à boucle déployante comportant un capot présentant une série de paires de trous destinés à loger les extrémités d'une barrette de fixation d'un bracelet. Deux paires de trous adjacentes sont espacées d'une distance définissant un pas de réglage de la longueur utile du bracelet, pour répondre aux problèmes mentionnés ci-dessus.For example, the patent application EP 09131 06 A1 describes a clasp of the folding clasp type comprising a cover having a series of pairs of holes intended to house the ends of a bracelet fastening strip. Two pairs of adjacent holes are spaced apart by a distance defining an adjustment pitch of the useful length of the bracelet, to respond to the problems mentioned above.

Toutefois, un tel dispositif de réglage de la longueur du bracelet est peu esthétique étant donné que les trous de réglage sont visibles sur les côtés du capot. En outre, l'opération de réglage d'un tel fermoir requiert une certaine dextérité car elle nécessite d'introduire un outil pointu dans les trous pour comprimer la barrette de fixation du bracelet, ce qui risque de conduire à des dommages au niveau du capot en cas de maladresse de la personne réalisant l'ajustement.However, such a device for adjusting the length of the bracelet is unattractive given that the adjustment holes are visible on the sides of the cover. In addition, the adjustment operation of such a clasp requires a certain dexterity because it requires introducing a pointed tool into the holes to compress the bracelet fixing strip, which risks leading to damage to the cover. in case of clumsiness of the person making the adjustment.

Pour éviter une telle situation, des dispositifs alternatifs ont déjà été divulgués, comme par exemple dans le brevet EP 0350785 B1 qui décrit un fermoir similaire au précédent mais comprenant en alternative un dispositif d'ajustement de la longueur utile du bracelet pouvant être manipulé sans outil. En effet, le fermoir décrit dans ce brevet est du type à boucle déployante comportant deux lames articulées entre elle au moyen d'une tige les traversant toutes deux, chacune des lames portant à son extrémité libre un organe de fixation à un bracelet. Une première lame porte un crochet destiné à s'engager dans un trou ménagé dans la seconde lame pour y coopérer avec une gâchette permettant de verrouiller le crochet et donc le fermoir dans un état fermé. La seconde lame comprend deux parties susceptibles de coulisser l'une par rapport à l'autre dans une certaine plage prédéfinie, définissant un pas d'ajustement de la longueur utile du bracelet. Une première de ses deux parties porte la charnière la reliant à la première lame tandis que la seconde partie porte la gâchette de verrouillage. Le trou dans lequel le crochet s'engage pour verrouiller le fermoir présente une longueur, suivant la direction longitudinale du bracelet, correspondant à la plage de coulissement entre les deux parties de la seconde lame. La gâchette présente une partie centrale définissant deux emplacements pour le crochet, suivant la direction longitudinale du bracelet, correspondant à deux longueurs utiles différentes du bracelet. Un organe de commande comprenant notamment un poussoir permet d'actionner la gâchette pour libérer le crochet et ouvrir le fermoir.To avoid such a situation, alternative devices have already been disclosed, as for example in the patent EP 0350785 B1 which describes a clasp similar to the previous one but comprising as an alternative a device for adjusting the useful length of the bracelet which can be manipulated without tools. Indeed, the clasp described in this patent is of the type with a folding clasp comprising two blades hinged together by means of a rod passing through them both, each of the blades carrying at its free end a member for fastening to a bracelet. A first blade carries a hook intended to engage in a hole provided in the second blade to cooperate there with a trigger making it possible to lock the hook and therefore the clasp in a closed state. The second blade comprises two parts capable of sliding relative to each other within a certain predefined range, defining a step for adjusting the useful length of the bracelet. A first of its two parts carries the hinge connecting it to the first blade while the second part carries the locking trigger. The hole in which the hook engages to lock the clasp has a length, in the longitudinal direction of the bracelet, corresponding to the sliding range between the two parts of the second blade. The trigger has a central part defining two locations for the hook, along the longitudinal direction of the bracelet, corresponding to two different useful lengths of the bracelet. A control member comprising in particular a pusher makes it possible to actuate the trigger to release the hook and open the clasp.

On pourra signaler qu'un inconvénient qui résulte de cette structure est la perte du réglage de la longueur du bracelet à chaque ouverture du fermoir. De ce fait, le porteur du bracelet doit veiller à chaque fermeture de son fermoir que le crochet est inséré du côté de la portion centrale de la gâchette correspondant à la longueur souhaitée pour le bracelet.It may be pointed out that a drawback which results from this structure is the loss of adjustment of the length of the bracelet each time the clasp is opened. Therefore, the wearer of the bracelet must ensure each closing of his clasp that the hook is inserted on the side of the central portion of the trigger corresponding to the desired length for the bracelet.

Des dispositifs de réglage comportant un organe de verrouillage spécifique ont également été proposés, en alternative, pour éviter ce type d'inconvénients. Le document EP3170420A1 décrit un fermoir de bracelet selon le préambule de la revendication 1.Adjusting devices comprising a specific locking member have also been proposed, as an alternative, to avoid this type of drawback. The document EP3170420A1 describes a bracelet clasp according to the preamble of claim 1.

Divulgation de l'inventionDisclosure of Invention

Un but principal de la présente invention est de pallier les inconvénients des fermoirs connus de l'art antérieur, en proposant un fermoir de bracelet comprenant un dispositif de réglage de la longueur utile du bracelet de structure simple, proposant préférablement un réglage stable, y compris lorsque le fermoir est ouvert, et de manipulation aisée.A main object of the present invention is to overcome the drawbacks of clasps known from the prior art, by proposing a bracelet clasp comprising a device for adjusting the useful length of the bracelet of simple structure, preferably proposing stable adjustment, including when the clasp is open, and easy to handle.

A cet effet, la présente invention concerne plus particulièrement un fermoir pour bracelet, du type à boucle déployante, selon les caractéristiques de la revendication 1.To this end, the present invention relates more particularly to a bracelet clasp, of the folding clasp type, according to the characteristics of claim 1.

De manière générale, on peut avantageusement prévoir que chacun des emplacements est défini par un trou ménagé dans le passant et dans lequel le téton est susceptible d'être engagé partiellement.In general, provision can advantageously be made for each of the locations to be defined by a hole formed in the loop and in which the stud is capable of being partially engaged.

Conformément à d'autres variantes avantageuses de l'invention :

  • les dégagements circulaires présentent un diamètre sensiblement identique à celui des extrémités de la barrette, et supérieur à la largeur de la rainure ;
  • les poussoirs comprennent un taquet de dimensions sensiblement identique à la rainure de guidage agencé pour agir sur la barrette ;
  • la rainure de guidage présente deux portions successive dans l'épaisseur de la portion coudée, une première portion comprenant la rainure et les deux dégagements circulaires et une deuxième portion sous la forme d'un dégagement oblong usiné au dos de la rainure ;
  • chaque portion coudée présente un épaulement agencé pour guider la barrette en translation.
In accordance with other advantageous variants of the invention:
  • the circular recesses have a diameter substantially identical to that of the ends of the bar, and greater than the width of the groove;
  • the pushers comprise a lug of dimensions substantially identical to the guide groove arranged to act on the bar;
  • the guide groove has two successive portions in the thickness of the bent portion, a first portion comprising the groove and the two circular clearances and a second portion in the form of an oblong clearance machined on the back of the groove;
  • each bent portion has a shoulder arranged to guide the bar in translation.

L'invention concerne également une montre-bracelet comportant un bracelet muni d'un fermoir conforme à l'invention.The invention also relates to a wristwatch comprising a bracelet provided with a clasp according to the invention.

Brève description des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement à la lecture de la description détaillée d'un mode de réalisation préféré qui suit, faite en référence aux dessins annexés donnés à titre d'exemples non limitatifs et dans lesquels:

  • la figure 1 représente une vue générale en perspective simplifiée d'un fermoir de bracelet selon un mode de réalisation préféré de la présente invention, alors qu'il est fermé et illustré depuis un premier côté;
  • la figure 2 représente une vue en perspective du fermoir de la figure 1, illustré en position ouverte ;
  • la figure 3 représente une vue en perspective partiellement éclatée du fermoir de la figure 2 ;
  • la figure 4 représente une vue en perspective détaillée des moyens de réglage de la longueur du bracelet ;
  • la figure 5 représente une vue en coupe d'une barrette mobile d'un fermoir conforme à l'invention.
Other characteristics and advantages of the present invention will appear more clearly on reading the detailed description of a preferred embodiment which follows, made with reference to the appended drawings given by way of non-limiting examples and in which:
  • the figure 1 shows a simplified perspective general view of a bracelet clasp according to a preferred embodiment of the present invention, while it is closed and illustrated from a first side;
  • the picture 2 represents a perspective view of the clasp of the figure 1 , shown in open position;
  • the picture 3 represents a partially exploded perspective view of the clasp of the figure 2 ;
  • the figure 4 shows a detailed perspective view of the strap length adjustment means;
  • the figure 5 shows a sectional view of a movable bar of a clasp according to the invention.

Mode(s) de réalisation de l'inventionEmbodiment(s) of the Invention

Le fermoir illustré à titre non limitatif sur les figures correspond à un mode de réalisation préféré de la présente invention. Plus précisément, le fermoir 1 est du type à boucle déployante et est destiné à fermer un bracelet de pièce d'horlogerie.The clasp illustrated without limitation in the figures corresponds to a preferred embodiment of the present invention. More specifically, the clasp 1 is of the folding clasp type and is intended to close a timepiece bracelet.

Tel que représenté sur les figures, le fermoir 1 comporte une première lame 2 articulée sur une seconde lame 4 au moyen d'une tige 6 associée à une douille, de manière illustrative non limitative. Chacune des lames présente une forme allongée suivant la direction longitudinale du bracelet et légèrement incurvée pour mieux épouser la forme du poignet d'un porteur.As shown in the figures, the clasp 1 comprises a first blade 2 articulated on a second blade 4 by means of a rod 6 associated with a sleeve, in a non-limiting illustrative manner. Each of the blades has an elongated shape in the longitudinal direction of the bracelet and slightly curved to better match the shape of the wearer's wrist.

La première lame 2 comprend deux montants 8 agencés en contact l'un avec l'autre à leur extrémité située du côté de la tige 6 et, présentant chacun une découpe telle qu'ils ne sont pas en contact l'un avec l'autre sur la plus grande partie de leur longueur.The first blade 2 comprises two uprights 8 arranged in contact with each other at their end located on the side of the rod 6 and, each having a cutout such that they are not in contact with each other over most of their length.

Chacun des montants 8 porte une extension 10, à proximité de son extrémité éloignée de la tige 6, s'étendant suivant une direction perpendiculaire à la direction longitudinale du bracelet, pour former un poussoir définissant un organe de commande permettant de déverrouiller le fermoir, tel que cela ressort de la figure 3.Each of the uprights 8 carries an extension 10, close to its end remote from the rod 6, extending in a direction perpendicular to the longitudinal direction of the bracelet, to form a pusher defining a control member making it possible to unlock the clasp, such that emerges from the picture 3 .

La première lame 2 comprend également un capot 14 présentant une paroi supérieure 16 portant des parois latérales 18, et une paroi inférieure 17. Les parois latérales 18 sont munies de deux orifices permettant de loger une extrémité d'une barrette 20 de fixation d'un brin de bracelet, de manière conventionnelle. Les parois latérales 18 comprennent également deux évidements permettant de laisser dépasser les extensions 10, et ainsi permettre de déverrouiller le fermoir 1.The first blade 2 also comprises a cover 14 having an upper wall 16 bearing side walls 18, and a lower wall 17. The side walls 18 are provided with two orifices making it possible to accommodate one end of a bar 20 for fixing a bracelet strand, in a conventional manner. The side walls 18 also include two recesses allowing the extensions 10 to protrude, and thus allowing the clasp 1 to be unlocked.

La seconde lame 4 comprend deux bras 22 reliés par un montant transversal 24 dans leur région centrale. Les bras 22 se prolongent par des portions coudées 26 définissant un passage 3 pour un autre brin de bracelet.The second blade 4 comprises two arms 22 connected by a transverse upright 24 in their central region. The arms 22 are extended by bent portions 26 defining a passage 3 for another bracelet strand.

Par ailleurs, l'extrémité libre de la seconde lame 4 porte un dispositif de réglage de la longueur utile du bracelet destiné à être associé au fermoir 1.Furthermore, the free end of the second blade 4 carries a device for adjusting the useful length of the bracelet intended to be associated with the clasp 1.

Le dispositif de réglage de la longueur utile du bracelet comprend une barrette 30 mobile de forme rectangulaire et formée de manière classique par un corps 301, deux pivots 302 agencés dans le corps 301 ainsi que deux ressorts 303 disposés dans le corps creux 301, en appui entre les pivots et la partie centrale du corps 301, les deux pivots étant aptes à coulisser dans une extrémité respective du corps 301.The device for adjusting the useful length of the bracelet comprises a mobile bar 30 of rectangular shape and formed in a conventional manner by a body 301, two pivots 302 arranged in the body 301 as well as two springs 303 arranged in the hollow body 301, resting between the pivots and the central part of the body 301, the two pivots being able to slide in a respective end of the body 301.

Avantageusement, la barrette mobile 30 est munie d'un téton 32 destiné à être engagé dans un trou du brin bracelet pour définir un point d'ancrage de ce dernier au fermoir 1. Ainsi, la barrette mobile 30 permet de déplacer la position du point d'ancrage du bracelet sur le fermoir et donc la longueur du bracelet au porter. Le téton 32 présente ici la forme d'un pied-vis et est préférentiellement chassé dans la barrette 30.Advantageously, the movable bar 30 is provided with a pin 32 intended to be engaged in a hole of the bracelet strand to define an anchor point of the latter to the clasp 1. Thus, the movable bar 30 makes it possible to move the position of the point anchorage of the bracelet on the clasp and therefore the length of the bracelet to wear. The stud 32 here has the shape of a screw foot and is preferably driven into the bar 30.

Bien entendu, d'autres structures similaires sont envisageables pour assurer le montage du téton 32 sur la barrette 30, sans sortir du cadre de l'invention. A titre d'exemple, on peut prévoir que la barrette présente un trou taraudé tandis que le téton comprend un filetage adapté pour permettre son vissage directement dans le trou, l'homme du métier pourra également chasser et braser le téton, ou encore réalisé l'ensemble via un moulage par injection ou encore via un usinage dans la masse.Of course, other similar structures can be envisaged for mounting stud 32 on strip 30, without departing from the scope of the invention. By way of example, provision can be made for the bar to have a tapped hole while the stud comprises a thread adapted to allow it to be screwed directly into the hole, the person skilled in the art can also drive out and braze the stud, or even make the together via injection molding or via machining in the mass.

Selon l'invention, chaque portion coudée 26 présente un dégagement 27 destiné à recevoir un poussoir 28, chacun étant agencé pour coopérer avec un pivot de la barrette mobile 30 lorsque le porteur de la montre appuie sur ces derniers.According to the invention, each bent portion 26 has a recess 27 intended to receive a pusher 28, each being arranged to cooperate with a pivot of the movable bar 30 when the wearer of the watch presses on the latter.

Tel qu'illustrés à la figure 3, chaque dégagement 27 présente une rainure de guidage 270 prévue pour recevoir un pivot 302 de la barrette mobile 30, la rainure de guidage 270 comprenant à chacune de ses extrémités au moins deux dégagements circulaires 271, 272 pour définir deux positions distinctes de la barrette 30, une position courte et un position longue. L'homme du métier saura bien évidemment adapter l'invention pour obtenir plus de deux positions si nécessaire.As illustrated at picture 3 , each recess 27 has a guide groove 270 provided to receive a pivot 302 of the movable bar 30, the guide groove 270 comprising at each of its ends at least two circular recesses 271, 272 to define two distinct positions of the bar 30 , a short position and a long position. Those skilled in the art will of course be able to adapt the invention to obtain more than two positions if necessary.

Les dégagements circulaires 271, 272 présente un diamètre sensiblement identique à celui des pivots 302 de la barrette 30, et supérieur à la largeur de la rainure de manière à éviter tout déplacement non souhaité de cette dernière.The circular recesses 271, 272 have a diameter substantially identical to that of the pivots 302 of the bar 30, and greater than the width of the groove so as to avoid any undesired movement of the latter.

Avantageusement, les poussoir 28 comprennent un taquet 280 de dimensions sensiblement identique à la rainure de guidage 270 sur leur face interne, c'est-à-dire la face opposée à la face de manipulation, qui est agencé pour agir sur les pivots 302 de la barrette 30 et les rétracter, et ainsi permettre la course de la barrette mobile 30 entre les deux positions distinctes.Advantageously, the pushers 28 comprise a catch 280 of dimensions substantially identical to the guide groove 270 on their internal face, that is to say the face opposite the handling face, which is arranged to act on the pivots 302 of the bar 30 and retract them, and thus allow the travel of the movable bar 30 between the two distinct positions.

Comme on peut l'observer sur la figure 3, la rainure de guidage 270 présente deux portions successive dans l'épaisseur de la portion coudée 26, une première portion comprenant la rainure 270 et les deux dégagements circulaires 271, 272 et une deuxième portion sous la forme d'un dégagement oblong 273 au dos de la rainure 270 de manière à permettre le guidage des pivots 302 de la barrette 30 lorsque les poussoirs 28 sont pressés.As can be observed on the picture 3 , the guide groove 270 has two successive portions in the thickness of the bent portion 26, a first portion comprising the groove 270 and the two circular clearances 271, 272 and a second portion in the form of an oblong clearance 273 on the back of the groove 270 so as to allow the guiding of the pivots 302 of the strip 30 when the pushers 28 are pressed.

Un ressort 29 est disposé entre le poussoir et le fond du dégagement 27 de manière à le maintenir dans sa position de repos. Pour avoir une structure simple, le ressort 29 est associé une goupille de positionnement et d'une vis de maintien pour son assemblage au fermoir.A spring 29 is arranged between the pusher and the bottom of the clearance 27 so as to maintain it in its rest position. To have a simple structure, the spring 29 is associated with a positioning pin and a retaining screw for its assembly to the clasp.

On notera également que chaque portion coudé 26 comprend un épaulement 31 destiné à guider la barrette 30 lors de son déplacement et prévenir toute inclinaison de cette dernière.It will also be noted that each angled portion 26 comprises a shoulder 31 intended to guide the bar 30 during its movement and to prevent any inclination of the latter.

Ainsi, lorsque le porteur souhaite changer la longueur du bracelet, le porteur peut modifier la position du téton 32 en pressant simultanément les deux poussoirs 28, puis en déplaçant le brin solidaire de la barrette 30 via le téton 32 d'une position à une autre. Une fois la position choisie, le porteur relâche les poussoirs 28 et la position est verrouillée.Thus, when the wearer wishes to change the length of the bracelet, the wearer can modify the position of the stud 32 by simultaneously pressing the two push-pieces 28, then by moving the strand attached to the bar 30 via the stud 32 from one position to another. . Once the position has been chosen, the wearer releases the pushers 28 and the position is locked.

De manière à limiter l'encombrement du fermoir, l'espace entre les bras 22 de la seconde lame 4 définit un évidement permettant de loger la première lame 2 dans l'état fermé du fermoir 1, ce de manière connue.So as to limit the size of the clasp, the space between the arms 22 of the second blade 4 defines a recess allowing the first blade 2 to be housed in the closed state of the clasp 1, in a known manner.

Des moyens de verrouillage conventionnels sont prévus pour assurer le maintien de l'état fermé du fermoir. A cet effet, un mécanisme de verrouillage classique est arrangé pour maintenir accrochée la première lame 2 sur la deuxième lame 1 quand aucune pression n'est exercée simultanément sur les poussoirs formés par les extensions 10. Les extensions10 présentent chacune des crochets fixes configurés pour coopérer respectivement avec des crochets disposés sur les bras 22 de la deuxième lame 4.Conventional locking means are provided to maintain the closed state of the clasp. To this end, a conventional locking mechanism is arranged to keep the first slat 2 attached to the second slat 1 when no pressure is exerted. simultaneously on the pushers formed by the extensions 10. The extensions 10 each have fixed hooks configured to cooperate respectively with hooks arranged on the arms 22 of the second blade 4.

Lorsque les extensions 10 sont actionnées, les crochets s'éloignent les uns des autres pour faire passer le fermoir dans son état ouvert.When the extensions 10 are activated, the hooks move away from each other to cause the clasp to pass into its open state.

Il ressort du présent exposé que le fermoir selon la présente invention comprend une barrette avec un téton susceptible d'être déplacée pour ajuster la longueur utile du bracelet. La construction et la manipulation de ce téton sont simples et permettent à l'utilisateur de procéder aisément au réglage du fermoir lorsque c'est nécessaire.It emerges from this presentation that the clasp according to the present invention comprises a bar with a stud capable of being moved to adjust the useful length of the bracelet. The construction and handling of this stud are simple and allow the user to easily adjust the clasp when necessary.

La description qui précède s'attache à décrire un mode de réalisation particulier à titre d'illustration non limitative et, l'invention n'est pas limitée à la mise en œuvre de certaines caractéristiques particulières qui viennent d'être décrites, comme par exemple les formes spécifiquement illustrées et décrites pour les lames ou encore leur mode de coopération permettant d'assurer le verrouillage du fermoir.The foregoing description sets out to describe a particular embodiment by way of non-limiting illustration and the invention is not limited to the implementation of certain particular characteristics which have just been described, such as for example the shapes specifically illustrated and described for the blades or even their mode of cooperation making it possible to ensure the locking of the clasp.

L'homme du métier ne rencontrera pas de difficulté particulière pour adapter le contenu de la présente divulgation à ses propres besoins et mettre en œuvre un fermoir, notamment pour pièce d'horlogerie, sans sortir du cadre de la présente invention. On notera par exemple que l'adaptation du présent enseignement pour la construction d'une boucle déployante de structure différente à celle illustrée et décrite ne posera pas de difficulté particulière à l'homme du métier.Those skilled in the art will not encounter any particular difficulty in adapting the content of the present disclosure to their own needs and implementing a clasp, in particular for a timepiece, without departing from the scope of the present invention. It will be noted, for example, that the adaptation of the present teaching for the construction of a folding clasp with a structure different from that illustrated and described will not pose any particular difficulty for those skilled in the art.

Par ailleurs, le fermoir selon la présente invention n'est pas non plus limité à la mise en œuvre de deux positions pour la barrette. En effet, l'homme du métier ne rencontrera pas non plus de difficulté particulière pour adapter le présent enseignement pour mettre en œuvre un fermoir présentant un nombre supérieur de positions de réglage possibles.Furthermore, the clasp according to the present invention is not limited either to the implementation of two positions for the bar. Indeed, the person skilled in the art will not encounter any particular difficulty either in adapting the present teaching to implement a clasp having a greater number of possible adjustment positions.

Claims (6)

  1. Bracelet clasp (1), of the deployant buckle type, comprising first and second strips (2, 4) articulated to each other, by a first of their respective ends, between a closed position for wear, and at least one open position, said first strip (2) carrying a member (20) for attaching a first bracelet strand, said second, lower strip (4) comprising at its second end means for adjusting the length of the bracelet, the clasp (1) further comprising at least one locking member (38, 40) for holding said first and second strips (2, 4) in their closed position, characterised in that said length adjustment means comprise a bar (30) movable relative to the second strip (4) said bar is of rectangular shape and formed by a body 301, two pivots 302 arranged in the body 301 as well as two springs 303 disposed in the hollow body 301, the two pivots (302) being able to slide in a respective end of the body 301, in that the bar carries a stud (32) intended to be inserted into a suitable hole in the bracelet strand to define a point of anchoring of the latter to the clasp (1), the movable bar (30) being able to be moved via pushers (28) mounted on the second strip (4) and thus to define at least two predefined positions associated with a predefined useful length of the bracelet.
    in that the second strip (4) comprises two curved portions (26) each having a recess (27) for receiving a pusher (28) arranged to act on the movable bar (30), each curved portion (26) comprising a guide groove (270) arranged to receive one end (302) of the movable bar (30), and in that the guide groove (270) comprises at each of its ends at least two circular spaces (271, 272) defining two distinct positions of the bar (30).
  2. Clasp (1) according to any of the preceding claims, characterised in that the circular spaces (271, 272) have a diameter substantially identical to that of the ends (302) of the bar (30), and greater than the width of the groove (270).
  3. Clasp (1) according to any of the preceding claims, characterised in that the pushers (28) include a stop (280) of substantially identical dimensions to the guide groove (270) arranged to act on the bar (30).
  4. Clasp (1) according to any of the preceding claims, characterised in that the guide groove (270) has two successive portions in the thickness of the curved portion (26), a first portion comprising the groove (270) and the two circular spaces (271, 272) and a second portion in the form of an oblong space (273) machined on the back of the groove (270).
  5. Clasp (1) according to any of the preceding claims, characterised in that the bar (30) is of rectangular shape and in that each curved portion (26) has a shoulder (31) arranged to guide the bar in translation.
  6. Wristwatch including a bracelet provided with a clasp (1) according to any of the preceding claims.
EP18212449.5A 2018-12-13 2018-12-13 Adjustable bracelet clasp Active EP3666110B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18212449.5A EP3666110B1 (en) 2018-12-13 2018-12-13 Adjustable bracelet clasp
US16/683,574 US10945497B2 (en) 2018-12-13 2019-11-14 Adjustable bracelet clasp
JP2019219394A JP6975218B2 (en) 2018-12-13 2019-12-04 Adjustable band Nakadome
CN201911285872.6A CN111317229B (en) 2018-12-13 2019-12-13 Adjustable watchband buckle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18212449.5A EP3666110B1 (en) 2018-12-13 2018-12-13 Adjustable bracelet clasp

Publications (2)

Publication Number Publication Date
EP3666110A1 EP3666110A1 (en) 2020-06-17
EP3666110B1 true EP3666110B1 (en) 2022-04-20

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EP18212449.5A Active EP3666110B1 (en) 2018-12-13 2018-12-13 Adjustable bracelet clasp

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US (1) US10945497B2 (en)
EP (1) EP3666110B1 (en)
JP (1) JP6975218B2 (en)
CN (1) CN111317229B (en)

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EP3666110B1 (en) * 2018-12-13 2022-04-20 Omega SA Adjustable bracelet clasp
CH715688A1 (en) * 2018-12-21 2020-06-30 Cartier Int Ag Folding clasp for bracelet.
WO2021182598A1 (en) 2020-03-13 2021-09-16 三菱ケミカル株式会社 Light-guiding plate and ar display
EP4159080B1 (en) * 2021-10-01 2024-03-27 Omega SA Adjustable bracelet clasp
EP4159079A1 (en) * 2021-10-01 2023-04-05 Omega SA Bracelet clasp with length adjustment
USD980115S1 (en) * 2022-03-14 2023-03-07 Shenzhen Fengtouniao Technology Co., Ltd. Buckle
USD980746S1 (en) * 2022-03-14 2023-03-14 Shenzhen Fengtouniao Technology Co., Ltd. Buckle
USD980116S1 (en) * 2022-03-14 2023-03-07 Shenzhen Fengtouniao Technology Co., Ltd. Buckle
USD980117S1 (en) * 2022-04-08 2023-03-07 Shenzhen Haishangpo Technology Co., Ltd Buckle

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Also Published As

Publication number Publication date
EP3666110A1 (en) 2020-06-17
US10945497B2 (en) 2021-03-16
CN111317229B (en) 2022-06-07
US20200187605A1 (en) 2020-06-18
CN111317229A (en) 2020-06-23
JP2020093092A (en) 2020-06-18
JP6975218B2 (en) 2021-12-01

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