EP3941300B1 - Clasp for a watchstrap or bracelet - Google Patents

Clasp for a watchstrap or bracelet Download PDF

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Publication number
EP3941300B1
EP3941300B1 EP20712316.7A EP20712316A EP3941300B1 EP 3941300 B1 EP3941300 B1 EP 3941300B1 EP 20712316 A EP20712316 A EP 20712316A EP 3941300 B1 EP3941300 B1 EP 3941300B1
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EP
European Patent Office
Prior art keywords
clasp
bracelet
blade
central blade
closed configuration
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.)
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Application number
EP20712316.7A
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German (de)
French (fr)
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EP3941300A1 (en
Inventor
Alessandro Camilli
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.)
Bulgari Horlogerie SA
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Bulgari Horlogerie SA
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Publication date
Application filed by Bulgari Horlogerie SA filed Critical Bulgari Horlogerie SA
Publication of EP3941300A1 publication Critical patent/EP3941300A1/en
Application granted granted Critical
Publication of EP3941300B1 publication Critical patent/EP3941300B1/en
Active legal-status Critical Current
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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

Definitions

  • the present invention relates to a clasp for a bracelet of a piece of jewellery, jewelery or timepieces. It also relates to a bracelet comprising such a clasp, and to a piece of jewellery, jewelery or timepieces comprising such a clasp.
  • the first solution is simple and consists in providing the ends of each strand with cooperation means, for example in the form of a simple loop and a barb on the one hand cooperating with holes on the other hand.
  • cooperation means for example in the form of a simple loop and a barb on the one hand cooperating with holes on the other hand.
  • Such a solution has the drawback that when the cooperation means are opened, the two strands of the bracelet are immediately separated and entail a risk of the bracelet falling.
  • Another solution consists in providing an intermediate element of the clasp type, arranged between the two bracelet strands, which always remains integral with the ends of these two strands.
  • a clasp occupies two configurations: a closed configuration, provided for wearing the bracelet, in which the bracelet and the clasp extend around the circumference of the wrist while having a total length allowing the bracelet to be held, and an open or deployed configuration which makes it possible to increase the length of the clasp and therefore of the bracelet, by separating the two ends of the two strands of the bracelet, without detaching them from the clasp, to allow the passage of the hand and the removal of the bracelet.
  • the two strands of the bracelet are not separated, which minimizes the risk of the bracelet falling off, which is for example advantageous in the case of a wristwatch.
  • a first objective is the search for a optimal comfort when wearing the bracelet and a successful aesthetic effect of the bracelet incorporating the clasp. For this, it is advantageous for the clasp to best match the contour of a wrist, even a small wrist, when the clasp is in the closed configuration.
  • a second objective is to achieve a large opening surface of the bracelet in the deployed configuration of the clasp, to facilitate the passage of a hand.
  • a difficulty in the production of a clasp therefore consists in defining the compromise between the fact of adequately and comfortably fitting the wrist of a wearer of a wristwatch, the fact of producing an aesthetic effect and the fact of 'provide a large enough opening for the passage of the wearer's hand.
  • the document CH641332A describes a bracelet clasp according to the preamble of claim 1.
  • a general object of the present invention is to provide a clasp for a bracelet which makes it possible to achieve an optimal aesthetic effect, and maximum reliability and user-friendliness in its opening and closing function.
  • the invention relates to a clasp for a bracelet comprising a central blade and two mobile blades, each mobile blade being articulated at the level of a longitudinal end of the central blade, each mobile blade having two lateral arms intended to be housed outside the lateral surfaces of the central blade in the closed configuration, these two lateral arms comprising a first free end connected by a first pin to a longitudinal end of the central blade, characterized in that the two lateral arms comprise a second end adapted to receive a second connecting pin with a bracelet strand, the central blade comprising a hollow portion in its central upper surface to receive such a second pin arranged at the second end of the side arms in the closed configuration of the clasp.
  • Each movable blade may comprise a U-shape, with a transverse rod which connects the two arms at their second end, said transverse rod comprising a transverse opening capable of receiving a second connecting pin with a wristband strand.
  • the lower surface of the central blade can be planar or of inverted convexity with respect to its upper surface.
  • the bracelet clasp may comprise at least one device for fixing each mobile blade arranged in the central blade for holding the mobile blades in the closed configuration of the clasp.
  • the fixing device can be a ball/spring assembly or an elastic blade.
  • the central blade may include at least one transverse opening on either side of its hollow portion to receive in each of said transverse openings a fixing device comprising two ball/spring assemblies.
  • the bracelet clasp may comprise a hollow zone and an abutment arranged in the surface of at least one lateral arm to cooperate with a fastening device in the closed configuration of the clasp.
  • the geometry of the side arms of the mobile blades can be adapted to that of the central blade so that they do not protrude in the vertical direction either from the upper surface or from the lower surface of the central blade in the closed configuration of the clasp.
  • the vertical direction is perpendicular to the lower and upper surfaces.
  • the invention also relates to a bracelet, characterized in that it comprises two bracelet strands connected by a clasp as described above.
  • the first links of each bracelet strand may include hollow areas for housing at least part of the clasp in the closed configuration of the clasp.
  • the invention also relates to a piece of jewellery, jewelery or timepieces, characterized in that it comprises a bracelet as described previously.
  • THE figures 1 to 5 illustrate a clasp 1 according to one embodiment of the invention.
  • a clasp comprises three blades, a central blade 2 surrounded by two movable blades 12, arranged symmetrically by a connection movable in rotation around a first axis 10 arranged at each longitudinal end of the central blade 2.
  • Each movable blade 12 comprises a second axis 30 arranged at its longitudinal end opposite to that linked to the central blade 2, by which it is capable of being linked to a bracelet strand, as will be described later in relation to the figures 12 to 15 .
  • THE figures 2 to 4 represent the clasp in the closed configuration, in which each mobile blade 12 is folded over the central blade 2.
  • the ends of each mobile blade 12 intended to receive the fixing of a bracelet strand come close to one of the other, in contact or quasi-contact, in the central part of the central blade 2.
  • a fixing device 20 allows the stable maintenance of this closed configuration of the clasp, which will be detailed later.
  • THE figures 7 and 8 more precisely represent the central blade 2 of the clasp 1 according to the embodiment of the invention.
  • This central blade 2 is narrow in the transverse direction since it is intended to be laterally covered by the arms of the movable blades 12, as will be specified later.
  • This width in the transverse direction represents substantially half of the total width of the clasp.
  • a hollow portion 4 is arranged in the central part of the upper surface 5 of the central blade 2, intended to receive transverse rods 14 of the movable blades 12, as is particularly visible on the figure 5 .
  • the upper surface has a rounded, convex shape, substantially following the shape of a wrist.
  • the lower surface 3 of the central strip 2 intended to come into direct contact with a wrist, has a substantially planar central part, or even, surprisingly, a slightly inverted convexity with respect to the wrist.
  • This shape allows maximization of the height (that is to say the thickness) of the central blade 2 in its central part, height measured in the vertical direction, so as to be able to form a hollow portion 4 of sufficient size to receive the transverse rods 14.
  • the convexities of the two upper 5 and lower 3 surfaces are adapted to increase the height of the central blade at its center. This increase is also adapted to the material chosen for the central blade, because it also makes it possible to achieve a form of sufficient mechanical strength.
  • transverse 6 and through openings are arranged, in a zone of considerable height of the central blade 2, advantageously making it possible to receive fixing devices 20 for the movable blades, which will be specified later.
  • two transverse openings 6 are arranged on either side of the hollow portion 4.
  • a transverse opening 9 is arranged at each longitudinal end of the central blade 2, designed to receive a first axis 10 for the pivoting of a movable blade 12.
  • FIG 9 represents a movable blade 12 of the clasp according to the embodiment of the invention.
  • a movable blade has a U-shape, comprising two side arms 13 intended to be housed outside the side surfaces of the central blade 2 in the closed configuration, as represented by the figures 2 to 4 .
  • the two lateral arms 13 comprise a first connected free end, provided with an opening 19 provided to receive the first axis 10 of pivoting connection at one end of the central blade 2.
  • the movable blade 12 further comprises a transverse rod 14, forming the base of the U-shape, connecting the two side arms 13 on their second end.
  • This transverse rod 14 comprises a transverse opening 18 intended to receive the second pin 30 for connection with a bracelet strand.
  • each arm 13 comprises a hollow area 15 in its inner surface, intended to cooperate with a fixing device, which will be described below.
  • the two transverse rods 14 of respectively the two mobile blades 12 are housed in the hollow portion 4 of the central blade 2, and the side arms 13 of each mobile blade are positioned around the central blade, against the right and left side surfaces of the central blade, in quasi contact.
  • the movable blades and the central blade are thus positioned substantially in the same horizontal plane.
  • the shape of the hollow portion 4 is adapted to the transverse rods 14, so that these rods are entirely arranged in these hollow portions, in particular do not protrude or little from the upper surface 5 of the blade central 2.
  • the hollow portion 4 comprises a convex rounded bottom, having a higher surface in the central part, thus forming two housings delimited substantially by walls in portions of a circle, of radius of curvature adapted to the transverse rods 14 cylindrical.
  • the side arms 13 have a height and a shape corresponding to the central strip 2, so that these side arms 13 do not protrude from the central strip 2 in the vertical direction in the closed configuration of the clasp. This arrangement makes it possible to minimize the size of the clasp in the closed configuration, to minimize its impact on the whole of a bracelet, as will be illustrated below.
  • each fixing device 20 comprises a substantially cylindrical body 21, comprising on each open end a ball 22 subjected to the stress of a helical spring 23, in prestressed configuration. At rest, as represented by the figures 10 and 11 , each helical spring 23 exerts a force on the associated ball 22, oriented towards the outside of the fixing device 20. Each ball 22 is thus held in abutment against an inner side wall of the fixing device while projecting from this device at the level at both ends.
  • a fixing device 20 is configured to be positioned in a transverse opening 6 of the central blade 2, so that each of the two balls 22 projects outside the respectively left and right side walls of the central blade.
  • the arms 13 of the movable blades 12 bear against the projecting balls 22, inducing their temporary retraction inside the fixing device 20 against the forces exerted by the springs 23 partners.
  • the balls 22 are positioned opposite the hollow zones 15 arranged in the inner surface of these arms 13, which allows the balls 22 to return to their rest position protruding, under the effect of their associated springs.
  • the balls 22 are thus housed in the hollow zones 15 of the arms 13 of the movable blades 12.
  • Each hollow zone 15 comprises a horizontal surface, even chamfered, delimiting it, positioned in the lower part in the closed configuration of the clasp, which thus forms a stop 16 by coming to bear against the balls 22, as shown in the figure 6 , preventing the opening movement of the movable blades 12 upwards and thus ensuring the holding function.
  • This arrangement in particular the force exerted by the springs 23, is designed to prevent the inadvertent opening of the clasp 1, while allowing it to be opened by a voluntary effort of a user.
  • FIG. 12 illustrates the clasp assembled with two bracelet strands 40, by the second axes 30 of the two movable blades 12, as mentioned above.
  • the clasp is in its deployed configuration, has a total length corresponding to the sum of the lengths of the central blade 2 and of the two movable blades 12, which makes it possible to greatly increase the total length of the bracelet for the passage of a hand.
  • FIG 13 illustrates the same bracelet with its clasp in the open position, seen from below. This makes it possible to illustrate that the first links 42 of each bracelet strand, close to a mobile blade, have a hollow zone 45 in their lower surfaces, of geometry allowing the at least partial accommodation of one half of the clasp in configuration closed, to hide it and minimize its aesthetic impact in the closed configuration of the clasp.
  • FIG 14 illustrates an intermediate phase of closing the clasp of the bracelet represented by the figures 12 and 13 .
  • the two blades are pivoted around their respective first axis 10, until reaching the closed configuration represented by the figure 15 .
  • the two transverse rods 14 and therefore the second axes 30 are inserted into the hollow portion of the central blade 2 of the clasp, which makes it possible to bring the upper surface of each end of bracelet strand 40 almost in contact, forming in top view an impression of a continuous bracelet, without vision of the clasp.
  • This impression is reinforced by the fact that the clasp is then housed in whole or in part in the hollow zones 45 of the first links 42 of the bracelet strands.
  • the clasp 1 is almost invisible in the closed configuration.
  • This construction thus has the advantage of making it possible to achieve optimum aesthetics, since the clasp is hidden in the closed configuration, the bracelet appearing continuous.
  • the links of the bracelet thus have a width greater than that of the clasp.
  • This width may be greater than or equal to 30%, or even 50%, or even twice the width of the clasp.
  • the different blades of the clasp can be made of a metal or a metal alloy, such as titanium, or ceramic.
  • they can be made of plastic material, such as PEEK, or of composite material, such as a carbon-based composite.
  • the invention also relates to a part which may be a bracelet. It thus also relates to a timepiece, such as a wristwatch, which may include such a wristband. More generally, it also relates to a piece of jewellery, jewelery or timepieces, which includes such a bracelet.
  • the fixing device 20 could be different.
  • the number of balls of the ball/spring assemblies could be different.
  • the fixing device could be formed by means other than a ball/spring assembly, for example by another device comprising an elastically movable fixing element.
  • This fastening element can be formed by a lateral elastic blade obtained directly by a cut in the material of the central blade of the clasp.
  • the shape of the clasp elements could be different.
  • the movable blades always include two side arms making it possible to come against the side faces of the central blade.
  • they do not necessarily have a U-shape, the second connecting pin 30 being able to replace the transverse rod 14.

Description

La présente invention porte sur un fermoir pour un bracelet d'une pièce de bijouterie, de joaillerie ou d'horlogerie. Elle porte aussi sur un bracelet comprenant un tel fermoir, et sur une pièce de bijouterie, de joaillerie ou d'horlogerie comprenant un tel fermoir.The present invention relates to a clasp for a bracelet of a piece of jewellery, jewelery or timepieces. It also relates to a bracelet comprising such a clasp, and to a piece of jewellery, jewelery or timepieces comprising such a clasp.

Il existe plusieurs solutions pour accrocher les deux brins d'un bracelet autour du poignet de son porteur. La première solution est simple et consiste à doter les extrémités de chaque brin de moyens de coopération, sous la forme par exemple d'une simple boucle et d'un ardillon d'une part coopérant avec des trous d'autre part. Une telle solution présente l'inconvénient que lors de l'ouverture des moyens de coopération, les deux brins du bracelet sont immédiatement désolidarisés et entraînent un risque de chute du bracelet.There are several solutions for hanging the two strands of a bracelet around the wearer's wrist. The first solution is simple and consists in providing the ends of each strand with cooperation means, for example in the form of a simple loop and a barb on the one hand cooperating with holes on the other hand. Such a solution has the drawback that when the cooperation means are opened, the two strands of the bracelet are immediately separated and entail a risk of the bracelet falling.

Pour pallier cet inconvénient, une autre solution consiste à prévoir un élément intermédiaire de type fermoir, disposé entre les deux brins de bracelet, qui reste toujours solidaire des extrémités de ces deux brins. Un tel fermoir occupe deux configurations : une configuration fermée, prévue pour le port du bracelet, dans laquelle le bracelet et le fermoir s'étendent sur le pourtour du poignet en présentant une longueur totale permettant le maintien du bracelet, et une configuration ouverte ou déployée qui permet d'augmenter la longueur du fermoir et donc du bracelet, en écartant les deux extrémités des deux brins du bracelet, sans les détacher du fermoir, pour permettre le passage de la main et le retrait du bracelet. Dans cette configuration ouverte du fermoir, les deux brins du bracelet ne sont pas désolidarisés, ce qui minimise le risque de chute du bracelet, ce qui est par exemple avantageux dans le cas d'une montre bracelet.To overcome this drawback, another solution consists in providing an intermediate element of the clasp type, arranged between the two bracelet strands, which always remains integral with the ends of these two strands. Such a clasp occupies two configurations: a closed configuration, provided for wearing the bracelet, in which the bracelet and the clasp extend around the circumference of the wrist while having a total length allowing the bracelet to be held, and an open or deployed configuration which makes it possible to increase the length of the clasp and therefore of the bracelet, by separating the two ends of the two strands of the bracelet, without detaching them from the clasp, to allow the passage of the hand and the removal of the bracelet. In this open configuration of the clasp, the two strands of the bracelet are not separated, which minimizes the risk of the bracelet falling off, which is for example advantageous in the case of a wristwatch.

Dans une solution avec fermoir, un premier objectif est la recherche d'un confort optimal lors du porter du bracelet et d'un effet esthétique réussi du bracelet intégrant le fermoir. Pour cela, il est avantageux que le fermoir épouse au mieux le contour d'un poignet, même d'un petit poignet, lorsque le fermoir est en configuration fermée. En parallèle, un deuxième objectif est d'atteindre une surface d'ouverture importante du bracelet en configuration déployée du fermoir, pour faciliter le passage d'une main. Une difficulté dans la réalisation d'un fermoir consiste donc à définir le compromis entre le fait d'épouser de manière adéquate et confortable le poignet d'un porteur d'une montre-bracelet, le fait de produire un effet esthétique et le fait d'offrir une ouverture suffisamment importante pour le passage de la main du porteur. Le document CH641332A décrit un fermoir pour bracelet selon le préambule de la revendication 1.In a solution with clasp, a first objective is the search for a optimal comfort when wearing the bracelet and a successful aesthetic effect of the bracelet incorporating the clasp. For this, it is advantageous for the clasp to best match the contour of a wrist, even a small wrist, when the clasp is in the closed configuration. In parallel, a second objective is to achieve a large opening surface of the bracelet in the deployed configuration of the clasp, to facilitate the passage of a hand. A difficulty in the production of a clasp therefore consists in defining the compromise between the fact of adequately and comfortably fitting the wrist of a wearer of a wristwatch, the fact of producing an aesthetic effect and the fact of 'provide a large enough opening for the passage of the wearer's hand. The document CH641332A describes a bracelet clasp according to the preamble of claim 1.

Un objet général de la présente invention est de proposer un fermoir pour bracelet qui permet d'atteindre un effet esthétique optimal, et une fiabilité et une convivialité maximales dans sa fonction d'ouverture et de fermeture. A cet effet, l'invention porte sur un fermoir pour bracelet comprenant une lame centrale et deux lames mobiles, chaque lame mobile étant articulée au niveau d'une extrémité longitudinale de la lame centrale, chaque lame mobile présentant deux bras latéraux destinés à se loger à l'extérieur des surfaces latérales de la lame centrale en configuration fermée, ces deux bras latéraux comprenant une première extrémité libre reliée par un premier axe à une extrémité longitudinale de la lame centrale, caractérisé en ce que les deux bras latéraux comprennent une deuxième extrémité apte à recevoir un deuxième axe de liaison avec un brin de bracelet, la lame centrale comprenant une portion creuse dans sa surface supérieure centrale pour recevoir un tel deuxième axe agencé à la deuxième extrémité des bras latéraux en configuration fermée du fermoir.A general object of the present invention is to provide a clasp for a bracelet which makes it possible to achieve an optimal aesthetic effect, and maximum reliability and user-friendliness in its opening and closing function. To this end, the invention relates to a clasp for a bracelet comprising a central blade and two mobile blades, each mobile blade being articulated at the level of a longitudinal end of the central blade, each mobile blade having two lateral arms intended to be housed outside the lateral surfaces of the central blade in the closed configuration, these two lateral arms comprising a first free end connected by a first pin to a longitudinal end of the central blade, characterized in that the two lateral arms comprise a second end adapted to receive a second connecting pin with a bracelet strand, the central blade comprising a hollow portion in its central upper surface to receive such a second pin arranged at the second end of the side arms in the closed configuration of the clasp.

Chaque lame mobile peut comprendre une forme en U, avec une tige transverse qui relie les deux bras au niveau de leur deuxième extrémité, ladite tige transverse comprenant une ouverture transversale apte à la réception d'un deuxième axe de liaison avec un brin de bracelet.Each movable blade may comprise a U-shape, with a transverse rod which connects the two arms at their second end, said transverse rod comprising a transverse opening capable of receiving a second connecting pin with a wristband strand.

La surface inférieure de la lame centrale peut être plane ou de convexité inversée par rapport à sa surface supérieure.The lower surface of the central blade can be planar or of inverted convexity with respect to its upper surface.

Le fermoir pour bracelet peut comprendre au moins un dispositif de fixation de chaque lame mobile agencé dans la lame centrale pour le maintien des lames mobiles en configuration fermée du fermoir.The bracelet clasp may comprise at least one device for fixing each mobile blade arranged in the central blade for holding the mobile blades in the closed configuration of the clasp.

Le dispositif de fixation peut être un ensemble bille/ressort ou une lame élastique.The fixing device can be a ball/spring assembly or an elastic blade.

La lame centrale peut comprendre au moins une ouverture transversale de part et d'autre de sa portion creuse pour recevoir dans chacune desdites ouvertures transversales un dispositif de fixation comprenant deux ensembles bille/ressorts.The central blade may include at least one transverse opening on either side of its hollow portion to receive in each of said transverse openings a fixing device comprising two ball/spring assemblies.

Le fermoir pour bracelet peut comprendre une zone creuse et une butée agencées dans la surface d'au moins un bras latéral pour coopérer avec un dispositif de fixation en configuration fermée du fermoir.The bracelet clasp may comprise a hollow zone and an abutment arranged in the surface of at least one lateral arm to cooperate with a fastening device in the closed configuration of the clasp.

La géométrie des bras latéraux des lames mobiles peut être adaptée à celle de la lame centrale de sorte qu'ils ne dépassent dans la direction verticale ni de la surface supérieure ni de la surface inférieure de la lame centrale en configuration fermée du fermoir. La direction verticale s'entend perpendiculairement aux surfaces inférieure et supérieure.The geometry of the side arms of the mobile blades can be adapted to that of the central blade so that they do not protrude in the vertical direction either from the upper surface or from the lower surface of the central blade in the closed configuration of the clasp. The vertical direction is perpendicular to the lower and upper surfaces.

L'invention porte aussi sur un bracelet, caractérisé en ce qu'il comprend deux brins de bracelet reliés par un fermoir tel que décrit précédemment.The invention also relates to a bracelet, characterized in that it comprises two bracelet strands connected by a clasp as described above.

Les premières mailles de chaque brin de bracelet peuvent comprendre des zones creuses pour le logement d'au moins une partie du fermoir en configuration fermée du fermoir.The first links of each bracelet strand may include hollow areas for housing at least part of the clasp in the closed configuration of the clasp.

L'invention porte aussi sur une pièce de bijouterie, de joaillerie ou d'horlogerie, caractérisée en ce qu'elle comprend un bracelet tel que décrit précédemment.The invention also relates to a piece of jewellery, jewelery or timepieces, characterized in that it comprises a bracelet as described previously.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation particulier de l'invention donné à titre d'exemple non limitatif et représenté sur les dessins annexés, dans lesquels :

  • La figure 1 représente une vue en perspective éclatée de dessus du fermoir pour bracelet selon le mode de réalisation de l'invention.
  • La figure 2 représente une vue en perspective de dessus du fermoir en configuration fermée selon le mode de réalisation de l'invention.
  • La figure 3 représente une vue en perspective de dessous du fermoir en configuration fermée selon le mode de réalisation de l'invention.
  • La figure 4 représente une vue de dessus du fermoir en configuration fermée selon le mode de réalisation de l'invention.
  • La figure 5 représente une vue de côté en coupe longitudinale du fermoir en configuration fermée selon le mode de réalisation de l'invention.
  • La figure 6 représente une vue de côté en coupe transversale du fermoir en configuration fermée selon le mode de réalisation de l'invention.
  • La figure 7 représente une vue en perspective de dessus de la lame centrale du fermoir selon le mode de réalisation de l'invention.
  • La figure 8 représente une vue de côté de la lame centrale du fermoir selon le mode de réalisation de l'invention.
  • La figure 9 représente une vue en perspective de dessus d'une lame mobile du fermoir selon le mode de réalisation de l'invention.
  • La figure 10 représente un dispositif de fixation du fermoir selon le mode de réalisation de l'invention.
  • La figure 11 représente une vue en coupe du dispositif de fixation du fermoir selon le mode de réalisation de l'invention.
  • La figure 12 représente une vue de côté d'un bracelet équipé d'un fermoir en configuration ouverte selon le mode de réalisation de l'invention.
  • La figure 13 représente une vue de dessous du bracelet équipé d'un fermoir en configuration ouverte selon le mode de réalisation de l'invention.
  • La figure 14 représente une vue en perspective de côté du bracelet équipé d'un fermoir en phase de fermeture selon le mode de réalisation de l'invention.
  • La figure 15 représente une vue de côté du bracelet équipé d'un fermoir en configuration fermée selon le mode de réalisation de l'invention.
Other advantages and characteristics will emerge more clearly from the following description of a particular embodiment of the invention given by way of non-limiting example and shown in the appended drawings, in which:
  • There figure 1 shows an exploded perspective view from above of the bracelet clasp according to the embodiment of the invention.
  • There figure 2 shows a top perspective view of the clasp in the closed configuration according to the embodiment of the invention.
  • There picture 3 shows a perspective view from below of the clasp in the closed configuration according to the embodiment of the invention.
  • There figure 4 shows a top view of the clasp in the closed configuration according to the embodiment of the invention.
  • There figure 5 shows a side view in longitudinal section of the clasp in the closed configuration according to the embodiment of the invention.
  • There figure 6 shows a cross-sectional side view of the clasp in the closed configuration according to the embodiment of the invention.
  • There figure 7 shows a perspective view from above of the central blade of the clasp according to the embodiment of the invention.
  • There figure 8 shows a side view of the central blade of the clasp according to the embodiment of the invention.
  • There figure 9 shows a top perspective view of a movable blade of the clasp according to the embodiment of the invention.
  • There figure 10 represents a fastening device of the clasp according to the embodiment of the invention.
  • There figure 11 shows a sectional view of the fastening device of the clasp according to the embodiment of the invention.
  • There figure 12 shows a side view of a bracelet equipped with a clasp in the open configuration according to the embodiment of the invention.
  • There figure 13 shows a bottom view of the bracelet fitted with a clasp in the open configuration according to the embodiment of the invention.
  • There figure 14 shows a side perspective view of the bracelet equipped with a clasp in the closing phase according to the embodiment of the invention.
  • There figure 15 shows a side view of the bracelet fitted with a clasp in the closed configuration according to the embodiment of the invention.

Pour simplifier la description, nous utiliserons par convention les termes de « direction longitudinale » pour la direction selon la longueur d'un brin de bracelet ou d'un fermoir, et de « direction transversale » pour la direction perpendiculaire, dans le plan d'un brin de bracelet (selon sa largeur) ou d'un fermoir. La direction verticale est la direction perpendiculaire aux deux premières directions, orientée perpendiculairement au plan du bracelet ou du fermoir. D'autre part, nous utiliserons le terme de « maille » pour un composant élémentaire d'un bracelet. Par « bracelet », nous désignerons soit le bracelet dans son ensemble, fermoir compris ou non, soit l'un ou l'autre des brins du bracelet. Nous utilisons les adjectifs « supérieur » et « inférieur » pour désigner une surface ou un élément positionné respectivement du côté opposé au poignet et du côté du poignet, en considérant la situation dans laquelle le fermoir et le bracelet sont positionnés autour d'un poignet, ou par extension tels qu'ils sont configurés pour venir autour d'un poignet. Nous utiliserons l'adjectif « latéral » pour désigner une surface ou un élément positionné vers les extrémités du fermoir et du bracelet considérées dans une direction transversale. Les extrémités latérales du fermoir seront avantageusement formées par des flancs verticaux longitudinaux.To simplify the description, we will use by convention the terms "longitudinal direction" for the direction along the length of a bracelet strand or clasp, and "transverse direction" for the direction perpendicular, in the plane of a bracelet strand (depending on its width) or of a clasp. The vertical direction is the direction perpendicular to the first two directions, oriented perpendicular to the plane of the bracelet or of the clasp. On the other hand, we will use the term “mesh” for an elementary component of a bracelet. By "bracelet", we will designate either the bracelet as a whole, clasp included or not, or one or other of the strands of the bracelet. We use the adjectives "upper" and "lower" to designate a surface or an element positioned respectively on the side opposite the wrist and on the side of the wrist, considering the situation in which the clasp and the bracelet are positioned around a wrist, or by extension as they are configured to come around a wrist. We will use the adjective “lateral” to designate a surface or an element positioned towards the ends of the clasp and of the bracelet considered in a transverse direction. The lateral ends of the clasp will advantageously be formed by longitudinal vertical flanks.

Les figures 1 à 5 illustrent un fermoir 1 selon un mode de réalisation de l'invention. Un tel fermoir comprend trois lames, une lame centrale 2 entourée par deux lames mobiles 12, agencées de manière symétrique par une liaison mobile en rotation autour d'un premier axe 10 agencé à chaque extrémité longitudinale de la lame centrale 2. Chaque lame mobile 12 comprend un deuxième axe 30 agencé à son extrémité longitudinale opposée à celle liée à la lame centrale 2, par lequel elle est susceptible d'être liée à un brin de bracelet, comme cela sera décrit plus loin en relation avec les figures 12 à 15.THE figures 1 to 5 illustrate a clasp 1 according to one embodiment of the invention. Such a clasp comprises three blades, a central blade 2 surrounded by two movable blades 12, arranged symmetrically by a connection movable in rotation around a first axis 10 arranged at each longitudinal end of the central blade 2. Each movable blade 12 comprises a second axis 30 arranged at its longitudinal end opposite to that linked to the central blade 2, by which it is capable of being linked to a bracelet strand, as will be described later in relation to the figures 12 to 15 .

Les figures 2 à 4 représentent le fermoir en configuration fermée, dans lequel chaque lame mobile 12 est repliée sur la lame centrale 2. Dans cette configuration fermée, les extrémités de chaque lame mobile 12 destinées à recevoir la fixation d'un brin de bracelet viennent à proximité l'une de l'autre, en contact ou quasi-contact, dans la partie centrale de la lame centrale 2. Un dispositif de fixation 20 permet le maintien stable de cette configuration fermée du fermoir, ce qui sera détaillé par la suite.THE figures 2 to 4 represent the clasp in the closed configuration, in which each mobile blade 12 is folded over the central blade 2. In this closed configuration, the ends of each mobile blade 12 intended to receive the fixing of a bracelet strand come close to one of the other, in contact or quasi-contact, in the central part of the central blade 2. A fixing device 20 allows the stable maintenance of this closed configuration of the clasp, which will be detailed later.

Les figures 7 et 8 représentent plus précisément la lame centrale 2 du fermoir 1 selon le mode de réalisation de l'invention. Cette lame centrale 2 est étroite dans la direction transversale puisqu'elle est destinée à être recouverte latéralement par les bras des lames mobiles 12, comme cela sera précisé plus loin. Cette largeur dans la direction transversale représente sensiblement la moitié de la largeur totale du fermoir. Une portion creuse 4 est agencée dans la partie centrale de la surface supérieure 5 de la lame centrale 2, destinée à recevoir des tiges transverses 14 des lames mobiles 12, comme cela est particulièrement visible sur la figure 5. En dehors de cette portion creuse 4, la surface supérieure présente une forme arrondie, convexe, suivant sensiblement la forme d'un poignet. Au contraire, la surface inférieure 3 de la lame centrale 2, destinée à venir en contact direct avec un poignet, présente une partie centrale sensiblement plane, voire de manière surprenante une convexité légèrement inversée par rapport au poignet. Cette forme permet une maximisation de la hauteur (c'est-à-dire l'épaisseur) de la lame centrale 2 dans sa partie centrale, hauteur mesurée dans la direction verticale, de manière à pouvoir former une portion creuse 4 de dimension suffisante pour recevoir les tiges transverses 14. Ainsi, les convexités des deux surfaces supérieure 5 et inférieure 3 sont adaptées pour augmenter la hauteur de la lame centrale en son centre. Cette augmentation est aussi adaptée au matériau choisi pour la lame centrale, car elle permet aussi d'atteindre une forme de tenue mécanique suffisante. Autour de cette portion creuse 4 centrale, des ouvertures transversales 6 et traversantes sont agencées, dans une zone de hauteur importante de la lame centrale 2, permettant de recevoir avantageusement des dispositifs de fixation 20 des lames mobiles, qui seront précisés plus loin. Plus exactement, deux ouvertures transversales 6 sont agencées de part et d'autre de la portion creuse 4. Enfin, une ouverture transversale 9 est agencée à chaque extrémité longitudinale de la lame centrale 2, conçue pour recevoir un premier axe 10 pour le pivotement d'une lame mobile 12.THE figures 7 and 8 more precisely represent the central blade 2 of the clasp 1 according to the embodiment of the invention. This central blade 2 is narrow in the transverse direction since it is intended to be laterally covered by the arms of the movable blades 12, as will be specified later. This width in the transverse direction represents substantially half of the total width of the clasp. A hollow portion 4 is arranged in the central part of the upper surface 5 of the central blade 2, intended to receive transverse rods 14 of the movable blades 12, as is particularly visible on the figure 5 . Apart from this hollow portion 4, the upper surface has a rounded, convex shape, substantially following the shape of a wrist. On the contrary, the lower surface 3 of the central strip 2, intended to come into direct contact with a wrist, has a substantially planar central part, or even, surprisingly, a slightly inverted convexity with respect to the wrist. This shape allows maximization of the height (that is to say the thickness) of the central blade 2 in its central part, height measured in the vertical direction, so as to be able to form a hollow portion 4 of sufficient size to receive the transverse rods 14. Thus, the convexities of the two upper 5 and lower 3 surfaces are adapted to increase the height of the central blade at its center. This increase is also adapted to the material chosen for the central blade, because it also makes it possible to achieve a form of sufficient mechanical strength. Around this central hollow portion 4, transverse 6 and through openings are arranged, in a zone of considerable height of the central blade 2, advantageously making it possible to receive fixing devices 20 for the movable blades, which will be specified later. More exactly, two transverse openings 6 are arranged on either side of the hollow portion 4. Finally, a transverse opening 9 is arranged at each longitudinal end of the central blade 2, designed to receive a first axis 10 for the pivoting of a movable blade 12.

La figure 9 représente une lame mobile 12 du fermoir selon le mode de réalisation de l'invention. Une telle lame mobile présente une forme en U, comprenant deux bras latéraux 13 destinés à se loger à l'extérieur des surfaces latérales de la lame centrale 2 en configuration fermée, comme représenté par les figures 2 à 4. Les deux bras latéraux 13 comprennent une première extrémité libre reliée, dotée d'une ouverture 19 prévue pour recevoir le premier axe 10 de liaison pivotante à une extrémité de la lame centrale 2. La lame mobile 12 comprend de plus une tige transverse 14, formant la base de la forme en U, reliant les deux bras latéraux 13 sur leur deuxième extrémité. Cette tige transverse 14 comprend une ouverture transversale 18 traversante destinée à recevoir le deuxième axe 30 de liaison avec un brin de bracelet. Enfin, chaque bras 13 comprend une zone creuse 15 dans sa surface intérieure, destinée à coopérer avec un dispositif de fixation, qui sera décrit ci-après.There figure 9 represents a movable blade 12 of the clasp according to the embodiment of the invention. Such a movable blade has a U-shape, comprising two side arms 13 intended to be housed outside the side surfaces of the central blade 2 in the closed configuration, as represented by the figures 2 to 4 . The two lateral arms 13 comprise a first connected free end, provided with an opening 19 provided to receive the first axis 10 of pivoting connection at one end of the central blade 2. The movable blade 12 further comprises a transverse rod 14, forming the base of the U-shape, connecting the two side arms 13 on their second end. This transverse rod 14 comprises a transverse opening 18 intended to receive the second pin 30 for connection with a bracelet strand. Finally, each arm 13 comprises a hollow area 15 in its inner surface, intended to cooperate with a fixing device, which will be described below.

Dans la configuration fermée du fermoir, les deux tiges transverses 14 de respectivement les deux lames mobiles 12 viennent se loger dans la portion creuse 4 de la lame centrale 2, et les bras latéraux 13 de chaque lame mobile se positionnent autour de la lame centrale, contre les surfaces latérales droite et gauche de la lame centrale, en quasi-contact. Les lames mobiles et la lame centrale sont ainsi positionnées sensiblement dans un même plan horizontal. Comme cela apparaît sur la coupe de la figure 5, par un plan de coupe longitudinal médian AA représenté sur la figure 4, la forme de la portion creuse 4 est adaptée aux tiges transverses 14, de sorte que ces tiges sont intégralement disposées dans ces portions creuses, notamment ne dépassent pas ou peu de la surface supérieure 5 de la lame centrale 2. La portion creuse 4 comprend un fond arrondi convexe, présentant une surface plus haute en partie centrale, formant ainsi deux logements délimités sensiblement par des parois en portions de cercle, de rayon de courbure adapté aux tiges transverses 14 cylindriques. D'autre part, les bras latéraux 13 présentent une hauteur et une forme correspondant à la lame centrale 2, de sorte que ces bras latéraux 13 ne dépassent pas de la lame centrale 2 dans la direction verticale en configuration fermée du fermoir. Cet agencement permet de minimiser l'encombrement du fermoir en configuration fermée, pour minimiser son impact sur l'ensemble d'un bracelet, comme cela sera illustré plus bas.In the closed configuration of the clasp, the two transverse rods 14 of respectively the two mobile blades 12 are housed in the hollow portion 4 of the central blade 2, and the side arms 13 of each mobile blade are positioned around the central blade, against the right and left side surfaces of the central blade, in quasi contact. The movable blades and the central blade are thus positioned substantially in the same horizontal plane. As it appears on the section of the figure 5 , by a median longitudinal section plane AA represented on the figure 4 , the shape of the hollow portion 4 is adapted to the transverse rods 14, so that these rods are entirely arranged in these hollow portions, in particular do not protrude or little from the upper surface 5 of the blade central 2. The hollow portion 4 comprises a convex rounded bottom, having a higher surface in the central part, thus forming two housings delimited substantially by walls in portions of a circle, of radius of curvature adapted to the transverse rods 14 cylindrical. On the other hand, the side arms 13 have a height and a shape corresponding to the central strip 2, so that these side arms 13 do not protrude from the central strip 2 in the vertical direction in the closed configuration of the clasp. This arrangement makes it possible to minimize the size of the clasp in the closed configuration, to minimize its impact on the whole of a bracelet, as will be illustrated below.

En complément, le fermoir 1 est équipé de plusieurs dispositifs de fixation 20, représentés par les figures 10 et 11, dont la fonction est de participer au maintien des lames mobiles 12 en configuration fermée du fermoir, pour éviter l'ouverture accidentelle intempestive du fermoir. Chaque dispositif de fixation 20 comprend un corps 21 sensiblement cylindrique, comprenant sur chaque extrémité ouverte une bille 22 soumise à la contrainte d'un ressort 23 hélicoïdal, en configuration précontrainte. Au repos, tel que représenté par les figures 10 et 11, chaque ressort 23 hélicoïdal exerce un effort sur la bille 22 associée, orienté vers l'extérieur du dispositif de fixation 20. Chaque bille 22 est ainsi maintenue en butée contre une paroi latérale intérieure du dispositif de fixation tout en faisant saillie de ce dispositif au niveau de ses deux extrémités. Un dispositif de fixation 20 est configuré pour être positionné dans une ouverture transversale 6 de la lame centrale 2, de sorte que chacune des deux billes 22 vienne en saillie à l'extérieur des parois latérales respectivement gauche et droite de la lame centrale.In addition, the clasp 1 is equipped with several fastening devices 20, represented by the figures 10 and 11 , whose function is to participate in maintaining the movable blades 12 in the closed configuration of the clasp, to avoid untimely accidental opening of the clasp. Each fixing device 20 comprises a substantially cylindrical body 21, comprising on each open end a ball 22 subjected to the stress of a helical spring 23, in prestressed configuration. At rest, as represented by the figures 10 and 11 , each helical spring 23 exerts a force on the associated ball 22, oriented towards the outside of the fixing device 20. Each ball 22 is thus held in abutment against an inner side wall of the fixing device while projecting from this device at the level at both ends. A fixing device 20 is configured to be positioned in a transverse opening 6 of the central blade 2, so that each of the two balls 22 projects outside the respectively left and right side walls of the central blade.

Lors d'une opération de fermeture du fermoir, les bras 13 des lames mobiles 12 viennent en appui contre les billes 22 en saillie, induisant leur escamotage temporaire à l'intérieur du dispositif de fixation 20 à l'encontre des efforts exercés par les ressorts 23 associés. Lorsque lesdits bras 13 poursuivent leur mouvement jusqu'à leur position finale de fermeture, les billes 22 se trouvent positionnées en vis-à-vis des zones creuses 15 agencées dans la surface intérieure de ces bras 13, ce qui permet aux billes 22 de reprendre leur position de repos en saillie, sous l'effet de leurs ressorts associés. Les billes 22 viennent ainsi se loger dans les zones creuses 15 des bras 13 des lames mobiles 12. Chaque zone creuse 15 comprend une surface horizontale, voire chanfreinée, la délimitant, positionnée en partie basse en configuration fermée du fermoir, qui forme ainsi une butée 16 en venant en appui contre les billes 22, comme représenté sur la figure 6, empêchant le mouvement d'ouverture des lames mobiles 12 vers le haut et assurant ainsi la fonction de maintien. Cet agencement, notamment l'effort exercé par les ressorts 23, est conçu pour empêcher l'ouverture intempestive du fermoir 1, tout en permettant son ouverture par un effort volontaire d'un utilisateur.During a closing operation of the clasp, the arms 13 of the movable blades 12 bear against the projecting balls 22, inducing their temporary retraction inside the fixing device 20 against the forces exerted by the springs 23 partners. When said arms 13 continue their movement until their final closed position, the balls 22 are positioned opposite the hollow zones 15 arranged in the inner surface of these arms 13, which allows the balls 22 to return to their rest position protruding, under the effect of their associated springs. The balls 22 are thus housed in the hollow zones 15 of the arms 13 of the movable blades 12. Each hollow zone 15 comprises a horizontal surface, even chamfered, delimiting it, positioned in the lower part in the closed configuration of the clasp, which thus forms a stop 16 by coming to bear against the balls 22, as shown in the figure 6 , preventing the opening movement of the movable blades 12 upwards and thus ensuring the holding function. This arrangement, in particular the force exerted by the springs 23, is designed to prevent the inadvertent opening of the clasp 1, while allowing it to be opened by a voluntary effort of a user.

La figure 12 illustre le fermoir assemblé à deux brins de bracelet 40, par les deuxièmes axes 30 des deux lames mobiles 12, comme mentionné précédemment. Le fermoir est dans sa configuration déployée, présente une longueur totale correspondant à la somme des longueurs de la lame centrale 2 et des deux lames mobiles 12, ce qui permet d'agrandir fortement la longueur totale du bracelet pour le passage d'une main.There figure 12 illustrates the clasp assembled with two bracelet strands 40, by the second axes 30 of the two movable blades 12, as mentioned above. The clasp is in its deployed configuration, has a total length corresponding to the sum of the lengths of the central blade 2 and of the two movable blades 12, which makes it possible to greatly increase the total length of the bracelet for the passage of a hand.

La figure 13 illustre le même bracelet avec son fermoir en position ouverte, en vue de dessous. Cela permet d'illustrer que les premières mailles 42 de chaque brin de bracelet, à proximité d'une lame mobile, présentent une zone creuse 45 dans leurs surfaces inférieures, de géométrie permettant le logement au moins partiel d'une moitié du fermoir en configuration fermée, pour le cacher et minimiser son impact esthétique en configuration fermée du fermoir.There figure 13 illustrates the same bracelet with its clasp in the open position, seen from below. This makes it possible to illustrate that the first links 42 of each bracelet strand, close to a mobile blade, have a hollow zone 45 in their lower surfaces, of geometry allowing the at least partial accommodation of one half of the clasp in configuration closed, to hide it and minimize its aesthetic impact in the closed configuration of the clasp.

La figure 14 illustre une phase intermédiaire de fermeture du fermoir du bracelet représenté par les figures 12 et 13. Pour cela, les deux lames sont pivotées autour de leur premier axe 10 respectif, jusqu'à atteindre la configuration fermée représentée par la figure 15. Dans cette position de fermeture, les deux tiges transverses 14 et donc les deuxièmes axes 30 sont insérés dans la portion creuse de la lame centrale 2 du fermoir, ce qui permet d'amener la surface supérieure de chaque extrémité de brin de bracelet 40 quasiment en contact, formant en vue de dessus une impression de bracelet continu, sans vision du fermoir. Cette impression est renforcée par le fait que le fermoir est alors logé en tout ou partie dans les zones creuses 45 des premières mailles 42 des brins de bracelet. Par ce biais, même en vue de côté de la figure 15, le fermoir 1 est presque invisible en configuration fermée. Cette construction présente ainsi l'avantage de permettre d'atteindre une esthétique optimale, puisque le fermoir est caché en configuration fermée, le bracelet paraissant continu.There figure 14 illustrates an intermediate phase of closing the clasp of the bracelet represented by the figures 12 and 13 . For this, the two blades are pivoted around their respective first axis 10, until reaching the closed configuration represented by the figure 15 . In this closed position, the two transverse rods 14 and therefore the second axes 30 are inserted into the hollow portion of the central blade 2 of the clasp, which makes it possible to bring the upper surface of each end of bracelet strand 40 almost in contact, forming in top view an impression of a continuous bracelet, without vision of the clasp. This impression is reinforced by the fact that the clasp is then housed in whole or in part in the hollow zones 45 of the first links 42 of the bracelet strands. Through this, even in side view of the figure 15 , the clasp 1 is almost invisible in the closed configuration. This construction thus has the advantage of making it possible to achieve optimum aesthetics, since the clasp is hidden in the closed configuration, the bracelet appearing continuous.

En remarque, les mailles du bracelet présentent ainsi une largeur supérieure à celle du fermoir. Cette largeur peut être supérieure ou égale à 30%, voire à 50%, voire à deux fois la largeur du fermoir.As a side note, the links of the bracelet thus have a width greater than that of the clasp. This width may be greater than or equal to 30%, or even 50%, or even twice the width of the clasp.

Les différentes lames du fermoir peuvent être en un métal ou un alliage métallique, comme du titane, ou en céramique. En variante, elles peuvent être en matériau plastique, comme du PEEK, ou en matériau composite, comme un composite à base de carbone.The different blades of the clasp can be made of a metal or a metal alloy, such as titanium, or ceramic. As a variant, they can be made of plastic material, such as PEEK, or of composite material, such as a carbon-based composite.

Comme cela a été mentionné ci-dessus, l'invention porte aussi sur une pièce qui peut être un bracelet. Elle porte ainsi aussi sur une pièce d'horlogerie, comme une montre bracelet, qui peut comprendre un tel bracelet. Plus généralement, elle porte aussi sur une pièce de bijouterie, de joaillerie ou d'horlogerie, qui comprend un tel bracelet.As mentioned above, the invention also relates to a part which may be a bracelet. It thus also relates to a timepiece, such as a wristwatch, which may include such a wristband. More generally, it also relates to a piece of jewellery, jewelery or timepieces, which includes such a bracelet.

Naturellement, l'invention ne se limite pas au mode de réalisation décrit. Notamment, le dispositif de fixation 20 pourrait être différent. Le nombre de billes des ensembles bille/ressort pourrait être différent. En variante, le dispositif de fixation pourrait être formée par un autre moyen qu'un ensemble bille/ressort, par exemple par un autre dispositif comprenant un élément de fixation mobile élastiquement. Cet élément de fixation peut être formé par une lame élastique latérale obtenue directement par une découpe dans le matériau de la lame centrale du fermoir.Naturally, the invention is not limited to the embodiment described. In particular, the fixing device 20 could be different. The number of balls of the ball/spring assemblies could be different. As a variant, the fixing device could be formed by means other than a ball/spring assembly, for example by another device comprising an elastically movable fixing element. This fastening element can be formed by a lateral elastic blade obtained directly by a cut in the material of the central blade of the clasp.

La forme des éléments du fermoir pourrait être différente. Notamment, les lames mobiles comprennent toujours deux bras latéraux permettant de venir contre les faces latérales de la lame centrale. Elles ne présentent toutefois pas nécessairement une forme de U, le deuxième axe de liaison 30 pouvant se substituer à la tige transverse 14.The shape of the clasp elements could be different. In particular, the movable blades always include two side arms making it possible to come against the side faces of the central blade. However, they do not necessarily have a U-shape, the second connecting pin 30 being able to replace the transverse rod 14.

Claims (11)

  1. A clasp (1) for a bracelet which comprises a central blade (2) and two movable blades (12), each movable blade (12) being articulated at a longitudinal end of the central blade (2), each movable blade (12) having two lateral arms (13) intended to become fitted on the outside of the lateral surfaces of the central blade (2) in the closed configuration, these two lateral arms (13) comprising a first free end which is connected by a first pin (10) to a longitudinal end of the central blade (2), characterized in that the two lateral arms (13) comprise a second end which is able to receive a second connecting pin (30) for connection to a bracelet strand (40), the central blade (2) comprising a recessed portion (4) in its central upper surface for the purpose of receiving such a second pin (30) arranged at the second end of the lateral arms (13) in the closed configuration of the clasp (1).
  2. The clasp (1) for a bracelet as claimed in the preceding claim, characterized in that each movable blade (12) comprises a U shape, with a transverse rod (14) which connects the two arms (13) at their second end, said transverse rod (14) comprising a transverse opening (18) which is able to receive a second connecting pin (30) for connection to a bracelet strand (40).
  3. The clasp (1) for a bracelet as claimed in either of the preceding claims, characterized in that the lower surface (3) of the central blade (2) is planar or has a convexity which is inverted in relation to its upper surface (5).
  4. The clasp (1) for a bracelet as claimed in one of the preceding claims, characterized in that it comprises at least one securing device (20) for securing each movable blade (12) arranged in the central blade (2) in order to hold the movable blades (12) in place in the closed configuration of the clasp.
  5. The clasp (1) for a bracelet as claimed in the preceding claim, characterized in that the securing device (20) is a ball/spring assembly or an elastic blade.
  6. The clasp (1) for a bracelet as claimed in the preceding claim, characterized in that the central blade (2) comprises at least one transverse opening (6) on either side of its recessed portion (4) in order to receive in each of said transverse openings (6) a securing device (20) comprising two ball/spring assemblies.
  7. The clasp (1) for a bracelet as claimed in one of claims 4 to 6, characterized in that it comprises a recessed zone (15) and a stop (16) which are arranged in the surface of at least one lateral arm (13) for cooperation with a securing device (20) in the closed configuration of the clasp.
  8. The clasp (1) for a bracelet as claimed in one of the preceding claims, characterized in that the geometry of the lateral arms (13) of the movable blades (12) is adapted to that of the central blade (2) such that they protrude in the vertical direction neither from the upper surface (5) nor from the lower surface (3) of the central blade (2) in the closed configuration of the clasp.
  9. A bracelet, characterized in that it comprises two bracelet strands (40) connected by a clasp (1) as claimed in one of the preceding claims.
  10. The bracelet as claimed in the preceding claim, characterized in that the first links (42) of each bracelet strand (40) comprise recessed zones (45) in which at least part of the clasp (1) becomes fitted in the closed configuration of the clasp.
  11. A jewelry piece or timepiece, characterized in that it comprises a bracelet as claimed in either of claims 9 and 10.
EP20712316.7A 2019-03-21 2020-03-17 Clasp for a watchstrap or bracelet Active EP3941300B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00372/19A CH715988B1 (en) 2019-03-21 2019-03-21 Bracelet clasp.
PCT/EP2020/057283 WO2020187907A1 (en) 2019-03-21 2020-03-17 Clasp for a watchstrap or bracelet

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EP3941300A1 EP3941300A1 (en) 2022-01-26
EP3941300B1 true EP3941300B1 (en) 2023-04-05

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EP20712316.7A Active EP3941300B1 (en) 2019-03-21 2020-03-17 Clasp for a watchstrap or bracelet

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EP (1) EP3941300B1 (en)
CN (1) CN113727623A (en)
CH (1) CH715988B1 (en)
WO (1) WO2020187907A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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EP4176757A1 (en) 2021-11-08 2023-05-10 Dexel S.A. Clasp with extensible loop

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0620986B1 (en) * 1993-04-19 1999-09-08 Maier S.A. Foldable fastener for a bracelet

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR73629E (en) * 1958-05-22 1960-09-05 Jaeger Ets Ed Improvements to bracelets and in particular to watch bracelets
CH641332A5 (en) * 1982-11-19 1984-02-29 Boucledor Sa Clasp
JPS6266505U (en) * 1985-10-18 1987-04-24
FR2619292B1 (en) * 1987-08-14 1989-12-29 Boucledor Sa CLASP FOR BRACELET
FR2705873B1 (en) * 1993-06-03 1995-08-11 Ferrario Luigi Folding clasp type bracelet.
FR2735335B1 (en) * 1995-06-15 1997-08-01 Smh Management Services Ag FASTENER BUCKLE CLASP
CH689931A5 (en) * 1995-12-18 2000-02-15 Renato Poli Clasp for watch bracelet
DE19729903A1 (en) * 1997-07-12 1999-01-14 Jaeger Lecoultre Sa bracelet
EP1027842B1 (en) * 1998-07-02 2010-04-28 Citizen Holdings Co., Ltd. Rotation stopper for opening and closing plates in center fixing device of band-shaped ornament
DE60005479T2 (en) * 2000-03-23 2004-07-01 Richemont International S.A. strap closure
FR2821725A1 (en) * 2001-03-07 2002-09-13 Luigi Ferrario FOLDING CLASP FOR BRACELET
ATE421264T1 (en) * 2006-11-27 2009-02-15 Dexel S A FOLDING CLASP FOR BRACELETS
EP2233026B1 (en) * 2009-03-25 2012-06-20 Rolex S.A. Device and method for linking and locking two parts and ball bar
EP2870893B1 (en) * 2013-11-07 2016-06-08 The Swatch Group Management Services AG Bracelet clasp
US9486042B2 (en) * 2014-06-05 2016-11-08 Google Technology Holdings LLC Wristband with recessed clasp and method of assembling and operating same
EP3069629B1 (en) * 2015-03-18 2019-07-03 The Swatch Group Research and Development Ltd. Bracelet clasp

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0620986B1 (en) * 1993-04-19 1999-09-08 Maier S.A. Foldable fastener for a bracelet

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CN113727623A (en) 2021-11-30
WO2020187907A1 (en) 2020-09-24
EP3941300A1 (en) 2022-01-26
CH715988B1 (en) 2022-05-31
CH715988A1 (en) 2020-09-30

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